Semiconductors The Silicon Chip Essays - , Term Papers

Semiconductors : The Silicon Chip Silicon is the raw material most often used in integrated circuit (IC) fabrication. It is the second most abundant substance on the earth. It is extracted from rocks and common beach sand and put through an exhaustive purification process. In this form, silicon is the purist industrial substance that man produces, with impurities comprising less than one part in a billion. That is the equivalent of one tennis ball in a string of golf balls stretching from the earth to the moon. Semiconductors are usually materials which have energy-band gaps smaller than 2eV. An important property of semiconductors is the ability to change their resistivity over several orders of magnitude by doping. Semiconductors have electrical resistivities between 10-5 and 107 ohms. Semiconductors can be crystalline or amorphous. Elemental semiconductors are simple- element semiconductor materials such as silicon or germanium. Silicon is the most common semiconductor material used today. It is used for diodes, transistors, integrated circuits, memories, infrared detection and lenses, light-emitting diodes (LED), photosensors, strain gages, solar cells, charge transfer devices, radiation detectors and a variety of other devices. Silicon belongs to the group IV in the periodic table. It is a grey brittle material with a diamond cubic structure. Silicon is conventionally doped with Phosphorus, Arsenic and Antimony and Boron, Aluminum, and Gallium acceptors. The energy gap of silicon is 1.1 eV. This value permits the operation of silicon semiconductors devices at higher temperatures than germanium. Now I will give you some brief history of the evolution of electronics which will help you understand more about semiconductors and the silicon chip. In the early 1900's before integrated circuits and silicon chips were invented, computers and radios were made with vacuum tubes. The vacuum tube was invented in 1906 by Dr.Lee DeForest. Throughout the first half of the 20th century, vacuum tubes were used to conduct, modulate and amplify electrical signals. They made possible a variety of new products including the radio and the computer. However vacuum tubes had some inherent problems. They were bulky, delicate and expensive, consumed a great deal of power, took time to warm up, got very hot, and eventually burned out. The first digital computer contained 18,000 vacuum tubes, weighed 50 tins, and required 140 kilowatts of power. By the 1930's, researchers at the Bell Telephone Laboratories were looking for a replacement for the vacuum tube. They began studying the electrical properties of semiconductors which are non-metallic substances, such as silicon, that are neither conductors of electricity, like metal, nor insulators like wood, but whose electrical properties lie between these extremes. By 1947 the transistor was invented. The Bell Labs research team sought a way of directly altering the electrical properties of semiconductor material. They learned they could change and control these properties by "doping" the semiconductor, or infusing it with selected elements, heated to a gaseous phase. When the semiconductor was also heated, atoms from the gases would seep into it and modify its pure, crystal structure by displacing some atoms. Because these dopant atoms had different amount of electrons than the semiconductor atoms, they formed conductive paths. If the dopant atoms had more electrons than the semiconductor atoms, the doped regions were called n-type to signify and excess of negative charge. Less electrons, or an excess of positive charge, created p-type regions. By allowing this dopant to take place in carefully delineated areas on the surface of the semiconductor, p-type regions could be created within n-type regions, and vice-versa. The transistor was much smaller than the vacuum tube, did not get very hot, and did not require a headed filament that would eventually burn out. Finally in 1958, integrated circuits were invented. By the mid 1950's, the first commercial transistors were being shipped. However research continued. The scientist began to think that if one transistor could be built within one solid piece of semiconductor material, why not multiple transistors or even an entire circuit. With in a few years this speculation became one solid piece of material. These integrated circuits(ICs) reduced the number of electrical interconnections required in a piece of electronic equipment, thus increasing reliability and speed. In contrast, the first digital electronic computer built with 18,000 vacuum tubes and weighed 50 tons, cost about 1 million, required 140 kilowatts of power, and occupied an entire room. Today, a complete computer, fabricated within a single piece of silicon the size of a child's fingernail, cost only about $10.00. Now I will tell you the method of how the integrated circuits and the silicon chip is formed. Before the IC is actually created a large scale drawing, about 400 times larger than the actual

Vygotsky Scaffolding What It Is and How to Use It

Vygotsky Scaffolding What It Is and How to Use It SAT / ACT Prep Online Guides and Tips If you’re an educator or have a student in school, you may have heard of the concept Vygotsky scaffolding. It may sound like a construction term, but Vygotsky scaffolding and the related concept of the zone of proximal development are teaching methods that can help students learn much more information much more quickly than they would with traditional instruction. However, Vygotsky scaffolding is only effective if you know how to properly implement it; otherwise it can actually hinder a student’s learning.Read this guide to learn what scaffolding and the zone of proximal development are, what the scaffolding psychology is, if studies have found these teaching methods to be effective, and how you can use these methods in the classroom to promote learning. What Is Instructional Scaffolding? Instructional scaffolding, also known as â€Å"Vygotsky scaffolding† or just â€Å"scaffolding,† is a teaching method that helps students learn more by working with a teacher or a more advanced student to achieve their learning goals. The theory behind instructional scaffolding is that, compared to learning independently, students learn more when collaborating with others who have a wider range of skills and knowledge than the student currently does.These instructors or peers are the â€Å"scaffolding† who help the student expand her learning boundaries and learn more than she would be able to on her own. Vygotsky scaffolding is part of the education concept â€Å"zone of proximal development† or ZPD.The ZPD is the set of skills or knowledge a student can’t do on her own but can do with the help or guidance of someone else. It’s the skill level just above where the student currently is. ZPD is often depicted as a series of concentric circles. The smallest circle is the set of skills a student can learn on her own, without any help. Next is the ZPD, or skills a student wouldn’t be able to do on her own, but can do with a teacher or peer helping her. Beyond that are skills the student can’t do yet, even with help. For example, say there is a kindergartner who is learning how to read and write. He knows all the letters of the alphabet, but he can’t yet read or write words. No matter how much guidance he was given, he could never read a novel on his own at this point, but with a teacher’s help, he can learn how to read and write short words like â€Å"at,† â€Å"boy† and â€Å"dog† because this skill is within is ZPD. It would have taken him much longer to learn this skill on his own, but it’s still simple enough that he can understand it if he has someone to explain it to him.The student’s ZPD is reading and writing short words, and the teacher who helps him learn them is the scaffolding. Proponents of ZPD and instructional scaffolding believe they are highly effective ways to maximize a student’s learning. Scaffolding can be used to help a person of any age learn something new, but in the classroom it is most often used with younger students (preschool and elementary school) since they are learning new skills and concepts they haven't been exposed to before most frequently. What’s the History Behind Vygotsky Scaffolding? Lev Vygotsky (1896-1934) was a Soviet psychologist who coined the term â€Å"zone of proximal development† and conducted many studies that led to instructional scaffolding. This is why the concept is often referred to as â€Å"Vygotsky scaffolding.† Vygotsky focused his work on developmental psychology, and it was in the 1920s and early 1930s, towards the end of his career, that he developed the concept of ZPD. Vygotsky believed that educators should help students learn within their ZPD so that they can increase their skills and knowledge without becoming frustrated by things that are currently too difficult for them to accomplish. Vygotsky came up with the idea of ZPD after extensive studying of how young children learn and the effectiveness of different teaching methods. He found that individual knowledge-based tests are often an inaccurate way to measure a young student’s intelligence since children need to interact with others who are more intelligent than they currently are in order to learn. He cited many examples of cultures where young children are taught new skills and knowledge passed down by older generations. For example, when infants are learning how to walk, they often start by holding onto the clothes or hands of an adult or older child, who guides them. The infant will continue to do this until they have enough skills and strength to walk on their own. This way they’re able to learn to walk much faster than if they were expected to learn without being able to hold onto anything. Vygotsky instead believed that the proper way to test young students was to test their ability to solve problems both independently and with the help of an adult.Dr. Maria Montessori, who established the Montessori education philosophy, also published similar research several decades before Vygotsky.Vygotsky died in 1934, less than a decade after he introduced the idea of ZPD, and after his death research on his ideas greatly decreased. In the 1960s, Vygotsky’s work was revived by a new group of psychologists studying developmental psychology. Dr. Jerome Bruner coined the term â€Å"scaffolding† and connected it to Vygotsky’s work. Dr. Bruner and other psychologists began studying the use of ZPD in different educational contexts, and they found that encouraging students to tackle the most difficult tasks within their ZPD leads to the most learning. Today scaffolding continues to be studied and used in schools, and much recent research has focused on how to use scaffolding to make classes (including online classes) more effective. Does Vygotsky Scaffolding Work? Over the past several decades, numerous studies have been conducted to study the effectiveness of using ZPD and scaffolding as teaching methods. Overall, research has shown that these methods can often help students learn more than they would compared to traditional teaching methods, but they require the instructor to have a good grasp of the student’s ZPD so they can adapt the teaching method to them. An early study from 1975 found that four-year-olds whose mother’s interacted with them and gave them advice were able to build significantly more complicated block towers than those who worked alone. The children who were most successful were those whose mothers adapted their strategy based on how well their child was completing the task. They made different comments based on whether the child was doing well or was struggling. A 1990 study found similar results when children were asked to put dollhouse furniture into the correct room. Children whose mothers gave them guidance were significantly more successful than those who completed the task on their own. A study published in 2000 that focused on a teacher using ZPD and scaffolding to teach a Farsi speaker English found that these methods can be an effective way to teach someone a new language. As the student improved his English skills, his teacher went from teaching individual words and phrases, to asking yes/no questions, to asking questions that required more in-depth responses. This gradual increase in difficulty helped the student improve his English skills while reducing feelings of frustration from attempting language skills beyond his current level. A similar scaffolding psychology study published in 2014 found that, in a group of 30 Australian language students, those who had tutors that used scaffolding techniques made significantly more progress in their writing quality and strategy application. Two studies, one from 2003 and one from 2010, found that ZPD and scaffolding can be effective, but if the instructor doesn’t know how to implement them correctly, she is at risk of helping students too much which turns them into passive learners and hinders their growth. Tips for Using Vygotsky Scaffolding in the Classroom From the studies discussed above, we know that instructional scaffolding can be an effective teaching tool, but only if the instructor understands how to use it. Below are four tips for using scaffolding in the classroom. Know Each Student’s ZPD In order to use ZPD and scaffolding techniques successfully, it’s critical to know your students’ current level of knowledge. Without this information, you won’t be able to teach them in their ZPD or provide effective scaffolding support. Before you begin a lesson with ZPD or Vygotsky scaffolding, find their baseline knowledge by giving a short quiz or having an introductory discussion on the topic where you ask students questions to figure out what they already know. Also remember that each student will have a different ZPD for each topic you teach. If a class has widely varying ZPDs for a specific topic, it can be more effective to have them work in groups or individually while you walk around the classroom and provide guidance so that you can tailor your techniques to each student’s ZPD. Encourage Group Work Group work can be a very effective way of using scaffolding principles in the classroom because students can learn from each other while working together on a project. More advanced students can help others learn while improving their own skills by explaining their thought process.Try to create groups that contain students with different skill sets and learning levels to maximize the amount students learn from each other. Make sure each student in the group is actively participating. If you see one student doing most of the work, have her ask the other students for their opinions, and emphasize the importance of everyone contributing. Don’t Offer Too Much Help A potential drawback of Vygotsky scaffolding is the possibility of providing too much help. This causes the student to be a passive, instead of active, learner and actually reduces the amount the student learns. If you’re using scaffolding techniques, don’t jump in right away and start offering advice. Let each student work on their own first.When they begin to struggle, first start by asking them questions about what they’ve done and what they think they should do next. As much as possible, ask open-ended questions that encourage them to find a solution on their own, as opposed to just telling them the next step. For example, if a student is trying to build a block tower, it’s much more helpful to say things like â€Å"How do you think you can make this tower stronger?† or â€Å"Why do you think the tower fell down?† than â€Å"You need to make the base bigger.† If after you’ve had the student think through the problem, then you can begin offering concrete advice for what to do next, but be sure to continue to ask questions to help increase the student’s understanding. For example, after giving advice on how to improve the block tower, you can ask â€Å"Why do you think making the base bigger helps the tower stay up?† Have Students Think Aloud Having students discuss their thought process is one of the best ways to figure out where their current skills are (and thus determine their ZPD) and make sure they’re actively learning.As a student is working on a project, have her talk about why she’s making certain decisions, what she thinks she should do next, and what she’s unsure about.When you give advice, make sure you also explain your own thought process so students can understand why you’re making the decisions you did. Summary:Vygotsky Scaffolding and the Zone of Proximal Development Vygotsky scaffolding is a teaching method that uses instructors and more advanced peers to help students learn. The Vygotsky theory of cognitive development states that students will learn more when they receive guidance from someone with more skills in the subject they’re learning than they would if they were tackling the subject on their own. Vygotsky scaffolding is part of the education theory the zone of proximal development. The zone of proximal development states that each student, for each subject, has three levels of learning: things the student can accomplish on her own, things she can accomplish with help from someone else (the zone of proximal development) and things she can’t accomplish no matter how much help she has. The ZPD and Vygotsky scaffolding theory is that students learn the most when they’re in their ZPD. Soviet psychologist Lev Vygotsky developed the ZPD and the Vygotsky theory of cognitive development, while Jerome Bruner developed scaffolding psychology several decades later.Studies have shown that scaffolding can be a very effective teaching method, as long as the teacher understands the concepts behind it and doesn’t provide too much guidance. If using scaffolding and the zone of proximal development in the classroom, remember to know each student’s ZPD, encourage group work, don’t offer too much help, and have students explain their thought process out loud. What's Next? Are you a teacher writing recommendations for your students? Read all about how to write an outstanding recommendation letter for your students, along with what not to include. When do colleges start looking at a student's grades? Do colleges look at middle school grades? Read our guide to learn how middle school grades are important for college admissions. Writing a research paper for school but not sure what to write about?Our guide to research paper topics has over 100 topics in ten categories so you can be sure to find the perfect topic for you.

Research paper summary Example | Topics and Well Written Essays - 500 words - 1

Summary - Research Paper Example The unstable alpha chains develop insoluble inclusions that occur within the bone marrow thus reducing the chances of development and survival of red blood cells. Therefore, the results of this research would assist to determine whether or not patients suffering from beta-Thalassemia could be assisted health wise by oxygenating their Red Blood Cells. Patients of one Thalassemic Unit from the selected hospital of the study were engaged in this research. The patients were persons attending regular transfusion units; all the patients involved in the study were persons attending Chelation therapies. However, those that were experiencing certain challenges associated with respiratory of cardiac problems were not involved in the study. The consent of all the patients involved in the study was sought before engaging them in the experiment. The data gathered was analyzed statistically. The Wilcoxon’s test was applied to analyze the collected data. This was specifically performed on paired data coupled with the application of Repeated Measures of Analysis of Covariance by using the SPSS 13.0 version. The analysis also involved the evaluation of Normality of Distribution for the continuous variables. Appropriate performance of linear regression was also involved in the data analysis process. The results findings of the study indicated that tissue oxygen saturation increased significantly after the Red Blood Cells transfusion as compared to the baseline, which was at 88% while against 90%. The consumption of oxygen among patients with beta Thalassemic conditions did not exhibit any significant change after the transfusion. The repeated measures of ANCOVA also indicated that increasing hemoglobin through transfusion of Red Blood Cells facilitates the increase of saturated tissue oxygen. These findings are related to the conclusion

Stem cell research Essay Example | Topics and Well Written Essays - 2000 words

Stem cell research - Essay Example The usability of stem cell therapy is wide but for this the destruction of young life cannot be allowed on ethical grounds. Stem cell research could pave way to a medical world where solution can be sort out for many fatal diseases but the brutality involved in it cannot be disregarded. Human embryo in any way cannot be suggested to be employed for the research or for the treatment purpose. The consequences and medical ethical point of view to stem cell research is important to study as it is connected with the destruction of a budding life. Stem cells are living from of human and it contains DNA and destruction of one life should never be a ladder to the life of another. The information and facts for this study has been in qualitative form as it is obtained from internet sources, books and journals. A thorough study of literature has been conducted and analysis and assessments are drawn accordingly. The Stem cell research Stem cells are undifferentiated cells of dualistic nature fou nd in human embryos and animal’s .The stem cells while remaining undifferentiated has the capability to expand or can differentiate and contribute to the development or repair of tissues of the body. In the website (Deem,2009)writes that â€Å"According to many stem cell researchers, embryonic stem cells are the preferred stem cells for cell-based therapies. Although they tend be more versatile than adult stem cells, other sources (including umbilical cord stem cells) have proven to be just as versatile†. The remarkable potentiality of the stem cells to develop in to different cell type is the advantage many scientists want to make use in future. Recently scientist has used only two types of stems cells namely: embryonic stem cells and non – embryonic stem cells. The stem cells present in the embryos have the unique capability of regenerating when introduced in the body of diseased or injured person. Stem cells have the potentiality in treating people suffering from heart diseases and diabetes. Stem cells are different from other cells present in the body. Unlike blood cells, nerve cells or muscle cells which do not replicate stem cells have the ability to replicate. Presently the scientist is under the process of studying the signaling pattern inside and outside each stem cell with their differentiating process. The majority of research and laboratory activities regarding the advantages of stem cells on human health are still yet to begin. Stem cell research also throws light upon the specific properties of stem cells and their contribution to attain new drugs and treatment. Pros and Cons of stem cell research The pros and cons of stem cell research related to embryonic cells can be described as follows. Pros Most people and scientists think that with the help of stem cells from embryo many diseases suffered by the people can be minimized Many people think that stem cells can help scientist in studying and observing the diffentiating proc ess it undergoes through replicating. Some people assume that ,stem cells can help in reproducing major organs of people who are diseased hence prolonging their life expectancy There is argument in scientific world that the excess embryo generated for the in vitro fertilization should be destroyed or utilized for research purpose. The embryo has many vital stem cells than adult cells and cord cells and is

Sickle Cell Disease Essay Example for Free

Sickle Cell Disease Essay This research informs the reader about Sickle cell disease. The goal is to raise awareness by describing what the disease is and where it originated. It gives advice on how to recognize signs in a crisis and how to help prevent any further symptoms. This focus uses facts from medical websites such as Web MD and Mayo Clinic. This research highlights every thing there is to know about sickle cell disease through detailed descriptions of where it comes from, how it is passed on, what it does to the body, and what can be done to help prevent it from getting really bad. Sickle cell disease is a blood disorder that is a genetic disease, which is inherited through parents. The bone marrow produces abnormal red blood cells that are a crescent shape. These red blood cells then get suck in the veins and cause many medical difficulties. This review will not investigate any personal experiences or experiences of any person. The sources mainly conclude that there are various researches trying to reveal helpful information for suffering patients. Researchers from the FSCDR administration found out that regular blood transfusions can reduce the occurrence of strokes and attacks in sickle cell patients. Regular monthly blood transfusions can help raise red blood cell counts and therefore reduce sickling and blood clots causing health complications. Further research into preventative remedies includes bone marrow transplants. Written by Vanessa Wasta this research goes in depth about how bone marrow transplants for patients with sickle cell disease work. Explaining the procedure and requirements of it. Then in another article Saint Louis University Medical Center researchers study therapy to relieve sickle cell pain. This study investigates treatment for young adults who are suffering from a pain crisis. St. Jude Children’s Hospital did research on how drug reduces hospitalizations and what the cost is treating young children with sickle cell anemia. The article goes in depth on how a new drug is demonstrated to be effective for treatment of adults and children with sickle cell anemia reducing hospitalizations and cut annual estimated medical cost by 21 percent for affected in fants and  toddlers. Further more a research found by Victor R. Gordeuk, MD discussing the basic transitional research program in sickle cell disease. Explaining how there are two components of the research. First is to study the neurodevelopmental status in children younger than 4. The second is to expose high school students to a laboratory research to cultivate interest in scientific research related to sickle cell disease. Johns Hopkins Medicine then shows how low vitamin D levels raise anemia risk in children. The low levels of â€Å"sunshine† vitamin D appear to increase a child’s risk of anemia, according to new research. The study is believed to be the first one to extensively explore the link between the two conditions in children. Then Georgia health Sciences University discovers that nitric oxide impacts the source of the sickle cell pain crisis. They reveal that nitric oxide gas appears to directly impact the source of the classic pain crisis of sickle cell disease found from re search. The main findings that I have come across is describing where it comes from, how it is passed on, what it does to the body, and what can be done to help prevent it from getting really bad. The genes you inherit determine the different forms of sickle cell. However, the most common form of sickle cell is sickle cell anemia. Sickle cell disease is a disorder in which the body forms sickle-shaped red blood cells (sickle-shaped means the blood cells are shaped in the form of a crescent). Normal red blood cells are disc-shaped that are similar to doughnuts but without the hole in the middle. The normal cells move quite easily through the blood vessels and contain a protein called hemoglobin. The hemoglobin carries oxygen from the lungs to the rest of the body. Unfortunately, sickle cell contains hemoglobin called sickle cell hemoglobin or hemoglobin S. Sickle cell tends to block the flow of blood through the blood vessels of the limbs and organs, which may cause severe damage in the organs. â€Å"Sickle cell anemia occurs because an abnormal form of hemoglobin (HbS) is produced. HbS molecules tend to clump together, making red blood cells sticky, stiff, and more fragile, and causing them to form into a curved, sickle shape†. Miller, R. (2012, September 01). Sickle Cell Anemia. Retrieved from http://kidshealth.org/teen/diseases_conditions/blood/sickle_cell_anemia.html. It gives a higher possibility that the carrier of sickle cell disease (SCD) can obtain infections. Sickle cell anemia is caused by mutation in the gene that tells your body to produce hemoglobin. The sickle cell gene is passed down from generation to generation in a pattern called auto-somal recessive inheritance. In other words, both the mother and the father must be carriers, or pass down the defective form of the gene in order for the child to be affected by SCD. However, if only one parent carries the sickle cell trait, the disease would not affect the child, but that child will become a carrier of the sickle cell trait. With one normal hemoglobin gene and one defective hemoglobin gene, people that carry the trait produce both normal and defective sickle cell hemoglobin. Although their blood only contains a certain amount of sickle cells and may not experience any symptoms, they have a very high possibility of passing that defective trait onto their offspring if the carrier has interaction with another carrier of the disease. Because an individual that has sickle cell is actually born with the disease, they experience symptoms after the first four months of the infant’s birth. â€Å"About 2,000 babies are born with sickle cell disease each year in the United States.† Sickle Cell Disease Symptoms, Causes, Treatments. (n.d.). Retrieved from http://www.webmd.com/pain-management/pain-management-sickle-cell-disease. There are six main symptoms: anemia, episodes of pain, hand-foot syndrome, frequent infections, delayed growth, and vision problems. In the symptoms of anemia, sickle cells are fragile. They break apart easily and die leaving the carrier with a shortage of red blood cells. Red blood cells normally die out within 120 days; however, for people that have sickle cell, their red blood cells die out within 10 to 20 days. Because of this shortage, the body cannot obtain the oxygen it needs in order to feel energized. Episodes of pain are exactly how it sound, yet they are called crises. Pain occurs when each sickle-shaped red blood cell blocks the flow of blood through the blood vessels. Pain may occur in the chest, bones, joints, and abdomen. One of the first signs of sickle cell in an infant is the swelling of the hands and the feet. The swelling is caused by the sickle-shaped red blood cells blocking the blood flow to the hands and feet. Infections are a very common symptom that a sickle cell carrier has to undergo. Sickle cells can damage the spleen and because the spleen is the organ that fights off infections, the  body is more vulnerable to infections. Due to the shortage of red blood cells in the body, the body is not obtaining enough nutrients and oxygen that it needs to grow. As a result of that, the infant or child experiences a delayed growth. Another symptom includes vision problems. We see due to tiny blood vessels that are supplied to our eyes. In sickle cell, those blood vessels may be plugged up with sickle cells damaging the retina. Sickle cell symptoms are mainly determined by how severe the sickle cell may be. When the disease becomes very severe, some symptoms may include paleness, rapid heart rate, shortness of breath, yellowing of the eyes and skin, painful and prolonged erection, confusion, urinary tract infection, gallbladder infection, and more. Sickle cell is a diverse disease; it is an inherited blood disease that affects people mainly of African ancestry. This disease also affects other people of different ethnic groups such as people who are of Mediterranean, Asian and Middle Eastern descent. In the United States, between 90,000 and 100,000 people have sickle cell disease. One in every twelve African American carries the sickle trait and two million people carry the trait, meaning they carry a gene for the disease. The disease occurs amongst one out of every five hundred African Americans and one out of every thirty-six thousand Hispanics birth. Due to sickle cell anemia, this disease can lead to a variety of complications, including stroke, acute chest syndrome, pulmonary hypertension, organ damage, blindness, skin ulcers, and priapism. Acute chest syndrome is a life-threatening complication. It causes chest pains, fevers, and lack of breath. In many cases, this syndrome is caused by a lung infection, but in this specific situation with sickle cell, it is caused by sickle cells blocking the blood vessels in your lungs. Sickle cell anemia may also cause pulmonary hypertension, which means high blood pressure in the lungs. It causes shortness of breath and difficulty breathing, which can eventually be fatal. â€Å"Sickle cell anemia varies from person to person. Some people who have the disease have chronic (long-term) pain or fatigue (tiredness). However, with proper care and treatment, many people who have the disease can have improved quality of life and reasonable health much of the time.† What Is Sickle Cell Anemia? (n.d.). Retrieved from http://www.nhlbi.nih.gov/health/health-topics/topics/sca/. There is no cure for sickle cell anemia; however, specialists are working on a cure at this very moment. One thing that people should do prior to making appointments for checkups, if they are a parent of a child with sickle cell disease, or if they have sickle cell disease, note any symptoms that they have experienced, write down questions to ask, and bring someone for moral support whether they are a friend or a family member. â€Å"Different techniques work for different people, but it might be worth trying heating pads, hot baths, massages or physical therapy†. Sickle cell anemia. (n.d.). Retrieved from http://www.mayoclinic.org/diseases-conditions/sickle-cell-anemia/basics/coping-support/con-20019348. Sickle cell disease is an unheard of disease to many people and there’s no clear physical appearance to tell if someone is diagnosed with the disease unless they mention it, but it is a disease that may have fatal results and it is a disease that needs to be studied more in depth. These researches explain different things that are being worked on to help prevent sickle cell pain and other medical complications. With the different researches it is found that therapy, blood transfusions, and transplants can be helpful. In the informative research that is about to be conducted there would inform the readers about sickle cell disease, what it is, and what can be done to help prevent pain and any other health complications. 1. Miller, R. (2012, September 01). Sickle Cell Anemia. Retrieved from http://kidshealth.org/teen/diseases_conditions/blood/sickle_cell_anemia.html Sickle cell anemia article presents information about the disease for kids and teens to understand. It introduces topics such as where it comes from and how it is inherited. It lets the other peers know information on how it can be treated and pain crisis prevented. 2. Sickle cell anemia. (n.d.). Retrieved from http://www.mayoclinic.org/diseases-conditions/sickle-cell-anemia/basics/coping-support/con-20019348 This article describes what sickle cell is and breaks down in simpler terms what can be done to help patients with this disease. It shows pictures and demonstrations on how the red blood cells work in the body. 3. Sickle Cell Disease Symptoms, Causes, Treatments. (n.d.). Retrieved

Applied Behavior Analysis Essay -- Autism Autistic Disorders Essays

Applied Behavior Analysis What is Autism? Autism is a neurological disorder delaying overall development and functioning. Children with autism generally experience prominent delays in the development of language, non-verbal communication, cognitive abilities, adaptive functioning, and social interaction. Children with autism often exhibit self stimulatory behavior such as spinning, rocking, hand flapping, or other peculiar motor behaviors. Autistic children can also be characterized by repetitive behavior and obsession with routine. Wide ranges of severity exist among those affected, for example, communication development can be displayed through complex language acquisition or the child may demonstrate no form of communication at all. A Parent's Perspective If you receive a diagnosis of Autism for your child, it can be devastating. Finding the appropriate help for your child can prove to be a painstaking endeavor. It is common for parents to receive conflicting, and/or erroneous information about the treatment of Autism from various professionals. The purpose of this pamphlet is to explain a mode of treatment known as Applied Behavior Analysis (ABA) and its potential effectiveness. What is ABA? ABA is a comprehensive behavior program incorporating all aspects of a child's life. It is characterized by a systematic teaching program. Every learning objective is broken down into the simplest form and taught to the child in a one-to-one (child/teacher) format. As skills are developed, complexity is added and generalization into all parts of the child's life is expected. The primary teaching method is known as discrete trial teaching. Discrete trial teaching occurs in a highly structured environ... ... 28 Nov. 2001. Connecticut Families for Effective Autism Treatment. 7 Feb. 2002 <http://www.ctfeat.org/daversabafinal.htm > Saffran, R. â€Å"What is ABA?†, Jul. 1997. ABA Resources for Recovery of Autism/PDD/Hyperlexia. 7 Feb. 2002 <http://members.tripod.com/Rsaffran/whatisaba.html> Leaf, Ron, McEachin, John, Editors. A Work in Progress: Behavior Management Strategies and a Curriculum for Intensive Behavioral Treatment of Autism. New York: DRL Books, 1999. "Early Behavior Intervention for Autism: What Does Reserach Tell Us?" by Green, G. as found in Behavior Intervention for Young Children with Autism, edited by C. Maurice, G. Green, S. Luce "Roll Call of Recovered Kids", <http://home.san.rr.com/autismnet/rollcall.html> provided through The Autism Network Resources for Physicians website, 2000-20001.<http://home.san.rr.com/autismnet/>

Ways Of Preventing Maternal Death Health And Social Care Essay

A maternal decease is â€Å" the decease of adult females while pregnant or within 42 yearss of expiration of gestation, irrespective of the continuance or site of the gestation, from any cause related to or aggravated by gestation or its direction, but non from inadvertent causes † . [ 1 ] Many people die from pregnancy-related causes and over 90 % of them occur in developing or under-developed states. Reducing maternal mortality by 75 % by 2015 has been one of the United Nations Millennium ends. [ 2 ] The causes of maternal decease vary from infection to gestational high blood pressure to complications of insecure or unhygienic abortions and many more. Many developing states lack equal wellness attention and household planning. Basic exigency obstetric intercessions, indispensable household planning methods, adequate wellness attention are far from the range of a pregnant adult female in a underdeveloped state. Forty-five per centum of postnatal deceases go on within the fir st twenty-four hours itself and little more than 60 % occur during the first hebdomad. Of the estimated 211 million gestations, 46 million consequences in induced abortions, more than 50 % of these abortions are insecure and do 68,000 deceases yearly. [ 3 ] The International Safe Motherhood Conference was held in Kenya in 1987. It brought to the attending of the universe communities of the annihilating effects of lifting maternal mortality rates in developing states and officially established the Safe Motherhood Initiative. The primary purpose was to diminish maternal mortality by 50 % by 2000, besides conveying to the attending of the planetary community the quandary of pregnant adult females. In the beginning patrons, United Nations ( UN ) bureaus and authoritiess of states focused on the improvement of prenatal attention, preparation of birth attenders, since these schemes failed, the universe reaffirmed its committedness in 2000 and stipulated a decrease in maternal mortality of 75 % by 2015. [ 2 ] Target 5.A: Reduce by three quarters, between 1990 and 2015, the maternal mortality ratio 5.1 Maternal mortality ratio 5.2 Proportion of births attended by skilled wellness forces The lending factors to maternal mortality in most developing states circulate around 3 holds. [ 4 ] The first hold would be that of the female parent, the household or the community who fail to acknowledge an at hand job or life -threatening status. [ 4 ] Many deceases occur within first 24 hour of postpartum. In most rural communities births occur at place with unskilled attenders who do non hold the accomplishment to find and forestall serious results and medical cognition to name and move on their complications. The 2nd hold would is the that in accessing a wellness attention installation. [ 4 ] It can be either due to hapless route conditions, deficiency of equal transit or even due to locations of these installations. The 3rd hold is the health- attention installation itself. [ 4 ] Resource -poor states with their fragile wellness attention systems and installations which do non hold much needed engineering or services necessary to supply critical attention. Due to inefficient i ntervention, and deficiency of accomplishment and supplies many adult females die each twelvemonth. CONCEPTS AND PROGRESS The highest Numberss of births per twelvemonth ( 27 million ) in the universe takes topographic point in India. [ 4 ] It has a maternal mortality of about 300-500 per 100,000 births and about 150000 maternal deceases take topographic point every twelvemonth in India, which is about 20 % of planetary maternal decease. [ 5,6 ] The calamity is these deceases are that they are mostly preventable. Therefore India ‘s proficiency in the decrease of maternal wellness is critical to the planetary accomplishment of Millennium Development Goal 5 ( MDG 5 ) . Based on grounds, intercessions for cut downing maternal mortality should strategically aim the chief causes of maternal decease. EMERGENCY OBESTERTIC CARE ( EMOC ) EMOC is one of the most cost effectual schemes implemented to cut down maternal deceases. [ 7 ] As it has been found that many maternal deceases occur due to obstetric exigencies that erupt all of a sudden at the oncoming of labour or instantly after. Availability of EMOC services in India is extremely lacking due to miss of focal point and limited direction capacity. EMOC was non successfully implemented and the authorities does non supervise how they function. The official attack is to advance institutional bringings and develop community wellness attention. It is doubted that this scheme will hold any consequence as bulk of bringings in India take topographic point at places in distant small towns. In 1992 India launched its first Child Survival and Safe Motherhood plan followed by Reproductive and Child wellness in 1997. [ 8 ] The former plan aimed at advancing medical aid at bringing, proviso of sterile bringing kits and beef uping referral units that deal with high hazard and o bstetric exigencies through Emergency obstetric attention ( EOC ) .The latter plan aimed at direction of unwanted gestations and one of their chief purposes was to supply quality integrated and sustainable primary wellness attention services to adult females of generative age group. [ 8 ] Recently The National Rural Health Mission was launched in 2005 that aimed to specifically make the households populating below the poorness line with much required wellness services. Besides, new reforms which aimed at developing small town wellness attention workers and advancing institutional bringings were to be patronized. [ 9 ] Under the NHRM a new strategy known as `janani express ‘ was launched in a province called Madhya Pradesh to supply nonstop free transit installations to pregnant adult females to wellness attention centres and infirmaries in rural parts thereby guaranting best possible attention when pre and post- bringing exigency conditions would originate both for the female parent and the baby involved. [ 10 ] ANTENATAL, INTRA NATAL AND POSTNATAL CARE The consensus among international organisations and India is that maternal quality attention is required throughout a adult females ‘s generative life. From planing inducements to increase results during from ante-partum period through intra-partum to postpartum period. Promoting maternal and child wellness has been an built-in of the Government of India. Safe maternity and Child wellness services were incorporated into the Reproductive and Child wellness plan ( Ministry of wellness and household public assistance 1997,1998b ) .The of import components of these plans include supplying prenatal attention, which includes at least 3 prenatal attention visits, Fe prophylaxis for pregnant and breastfeeding female parents, observing and handling anaemia in female parents, two doses of lockjaw toxoid vaccinum and direction and referral of bad gestations. Encouragement of institutional bringings or place bringings assisted by trained wellness forces was advocated. Supplying postpartum attention including three postpartum visits. Assorted intercessions such as attempts to turn to and handle postnatal bleeding and infections by supplying Pitocins and antibiotics in wellness attention installations have been implemented. Besides manual remotion of placenta, blood transfusion, hysterectomy processs, intervention of eclampsia with antiepileptics h ave been addressed. [ 11 ] Midwife In pre independent India, many efforts were made for bettering safe obstetrics accomplishments. From puting up an Advisory commission on Maternal mortality in India to constitutions of a `dai ‘s † ( obstetrics ) school in Amristar in 1980. However, the focal point on safe maternity and skilled aid shifted when India adopted new policies. In 1960, to supply indispensable maternal and kid wellness services, India created a model of two twelvemonth trained rural accoucheuse ( ANMs ) .Their appellation as â€Å" auxillairy † unluckily threatened their position and map as accoucheuses though they well fitted the definition of a skilled birth attender. Majority of the ANM ‘s lacked the needed cognition and accomplishments to supply maternal attention and support. Under intense authorities force per unit area, The INC ( Indian nursing council ) revised the ANM preparation class, and the function of ANM changed from a maternal wellness attention worker to household p lanning and immunisation ( 1966 ) .Abolishment of institution-based accoucheuses and replacing them with general nurse accoucheuses led to annulment of these preparation plans that were entirely set up for obstetrics. These general nurses were alternated between sections of the infirmary and are besides automatically registered as accoucheuses. Since most births in India are domiciliary bringings, the demand to supply skilled birth attending at community degree is high. [ 12 ] Besides, in certain countries such as the province of Tamil Nadu, hard currency inducements were provided in a strategy aiming adult females under poorness line known as the Dr. Muthulakshmi Reddy Scheme to assist adult females back up themselves during gestation period, childbearing and postal natal period through nutrition and equal conveyance. [ 13 ] HEALTH CARE SYSTEM AND POLICIES IN INDIA Improved health-care system ensures decrease of maternal mortality, thereby bettering the general wellness of a state. Measuring and measuring the advancement a state makes poses a challenge. The authorities of India has been implementing assorted jobs to undertake these issues. In 1997, the Reproductive and Child wellness ( RCH ) plan was launched aimed at universalising immunisation, prenatal attention and skilled attending during bringing. Reduction maternal mortality was an of import end RCH-2 that was launched in 2005. Incentives were given to staff to promote round the clock OBs services at wellness attention installations. [ 11 ] The National Rural wellness mission ( NRHM ) which was formed in 2005 aimed at beef uping wellness attention systems in rural countries. Under NRHM, the Janani Suraksha Yojana ( JSY ) plan, the pregnancy benefit strategy, was introduced in 2005, hard currency aid was provided to adult females who deliver in wellness installations. [ 9 ] NGO ‘s s uch as SAHAYOG are working to advance maternal wellness through partnerships with other organisations to increase community adult females ‘s entree to maternal wellness services, besides to advance adult females generative rights. To carry through these aims the Maternal Health and Right plans uses human rights-based attacks through instance certification, runs research, monitoring, protagonism and policy shapers, and media. This plan seeks to understand worlds of maternal wellness. They work at province degree with the aid of Women ‘s Health Rights Forum ( Mahila Swasthya Adhikar Manch ) in raising consciousness of maternal wellness services of rural adult females, at the national degree in edifice alliances around interest holders i.e. adult females, wellness service suppliers and policy shapers for bettering maternal wellness and at the international degree by join forcesing among safe maternity and human rights organisations from around the universe. [ 14 ] Target 5.B: Achieve, by 2015, cosmopolitan entree to reproductive wellness 5.3 Contraceptive prevalence ratey 5.4 Adolescent birth rate 5.5 Antenatal attention coverage ( at least one visit and at least four visits ) 5.6 Unmet demand for household planning Over the decennaries there has been a significant addition in the demand for consciousness of generative wellness in India to control the of all time turning birth rate. In 1951, The Family Welfare Program was set up with an aim of cut downing birth rate and doing it consistent with the demand of national economic system. Besides to confirm the authorities committedness towards the citizens availing generative wellness attention services. Due to increase in fiscal investings of the authorities, assorted plans covering with immunisation, gestation, bringing and preventative and healing wellness has been provided. In order to cut down the birth rate, rubbers and unwritten preventives pills were provided free or sold at subsidised rates. Intrauterine devices such as CU-T were supplied free of cost to all the provinces. [ 15 ] A strategy known as the Sterilization beds strategy was introduced in 1964 in order to supply installations like tubectomy operations in wellness attention centres when instances such as these could non be admitted due to miss of beds. Besides No-Scalpel Vasectomy Project is being implemented to assist work forces follow male sterilisation and therefore implementing male engagement in the race to restrict of all time turning birth rates. [ 16 ] The Integrated Child Development Scheme ( 1975 ) provides supplement nutrition, wellness attention medical examinations before and after bringing and wellness and nutrition instruction to pregnant adult females and chest eating female parents. [ 17 ] Many strategies were introduced with purposes of puting wellness stations in slums countries and supplying referral services affecting distribution of preventives. The 90 ‘s witnessed a alteration in the quality of household planning services, use of contraceptive method etc. During the fifth five twelvemonth program, the Indian authorities designed schemes to advance and actuate household be aftering methods with the aid of an advertisement bureaus of India which was immense measure in a conservative society like India. At the start of the millenary, India aimed at cut downing the birthrate rate by presenting inducements such as providing preventives. India claims to be the first state in the universe to establish a countrywide plan by providing prophylactic devices to restrict the population growing. Many ends from bettering poorness, detaining matrimony, honoring Panchayats and Zilla Parshads for their function in universalising the little household norm, advancing literacy plans, accomplishing decrease birth rates were brought approximately. Besides hard currency inducements were provided to female parents who have their first kid after 19 year of age, honoring twosomes who come below the poorness line if they decide to get married after making legal nubile age of 21. Decision India has shown singular advancement in cut downing maternal mortality by presenting clever alterations within the bing model of organisational set-up, resources and restraints. Overshadowing political precedence and constitutional policies of province authoritiess to cut down maternal mortality has been a steering force. India is traveling easy towards accomplishing mark of MDG 5, but to accomplish them within the stipulated clip bound, it will necessitate to speed up gait of intercessions, despite stray illustrations of advancement, national and planetary attending to maternal and child wellness. REFRENCES [ 1 ] The International Classification of Diseases, Injuries and Causes of Death – 9th alteration ( ICD9 ) [ 2 ] World Health Organization ( WHO ) , authorsyThe World Health Report 2005: Make Every Mother and Child Count.yGeneva, Switzerland: WHO ; 2005. [ Accessed June 25, 2008 ] .http: //www.who.int/whr/2005/whr2005_en.pdf. [ 3 ] 1.yUnited Nations, authors.yUN Millennium Development Goals Web site.y [ Accessed June 25, 2008 ] .http: //www.un.org/millenniumgoals/ [ 4 ] 3.yMaternal United Nations Population Fund ( UNFPA ) , authorsyMaternal Mortality Update 2002: A Focus on Emergency Obstetric Care.yNew York: UNFPA ; 2003. [ Accessed July 7, 2008 ] .http: //www.unfpa.org/upload/lib_pub_file/201_filename_mmupdate-2002.pdf. [ 5 ] Maternal mortality in India: 1997-2003. Tendencies, causes and hazard factors. New Delhi: Registrar General ; 2006. [ 6 ] National Family Health Survey ( NFHS-2 ) Key Findings. International Institute for Population Sciences ; 1998-99. p.12. . [ 7 ] Maine D. Safe maternity plans: options and issues. Columbia University ; 1993. [ 8 ] Ved RR, Dua AS. Review of adult females and kids ‘s wellness in India: focal point on safe maternity [ Background paper for â€Å" Burden of Disease in India † ] . National Commission on Macroeconomics and Health Publication, India ; 2005. [ 9 ] National Rural Health Mission model for Execution 2005 – 2010. New Delhi: Ministry of Health and Family Welfare, Government of India ; 2005.yy [ 10 ] Janani Express Yojana: Madhya Pradesh, hypertext transfer protocol: //india.gov.in/citizen/health/viewscheme.php? schemeid=2055 [ 11 ] The National Child Survival and Safe Motherhood Programme. Ministry of Health and Family Welfare, Government of India, 1992.yy yy [ 12 ] y Mavalankar D, Vora K. Changing function of subsidiary nurse accoucheuse in India. [ 13 ] World Health Organization Regional Office for South East Asia, 2009. Safer Pregnancy in Tamil Nadu: From vision to Reality 2009 [ 14 ] SAHAYOG, hypertext transfer protocol: //www.sahayogindia.org/ [ 15 ] Family Welfare Programme in India, hypertext transfer protocol: //mohfw.nic.in/dofw % 20website/family % 20welfare % 20programme/intro.htm [ 16 ] Family Welfare Programme in India, No-Scalpel Vasectomy plan, hypertext transfer protocol: //mohfw.nic.in/dofw % 20website/family % 20welfare % 20programme/nsv/intro.htm [ 17 ] Integrated Child development Services ( ICSD ) Scheme, hypertext transfer protocol: //wcd.nic.in/icds.htm