Wednesday, August 26, 2020

Tobacco Essay -- social issues

Tobacco Tobacco is one of the main preventable reasons for death in the United States. Nicotine, which is an alkaloid gotten from the tobacco plant, is an intense concoction that effectsly affects the human body, particularly when regulated quickly or at high portions. Pre-birth presentation to nicotine is related with antagonistic regenerative results, including adjusted neural structure and working, intellectual shortfalls, and conduct issues in the posterity (9). At any rate 20% - 30% of pregnant ladies are assessed to smoke cigarettes, albeit smoking is related with low birth weight, rashness and newborn child mortality. In the United States, smoking records yearly for evaluated fetal passings going from 19,000 to 141,000, for 1,900 to 4,800 passings during or following parturition, and for 1,200 to 2,200 demise from Sudden Infant Death Syndrome (7). Maternal smoking has been involved in long haul shortfalls in baby mental turn of events and unfavorable social issues in kids, for example, consideration issue. Nicotine crosses the human placenta and effectsly affects the creating hatchling. Pre-clinical investigations recommend that maternal smoking during pregnancy produces changes on the posterity's neural working, remembering decreases for take-up of serotonin, adjustments in dopaminergic frameworks, modifications in fringe and focal noradrenergic neurons, and changes in DNA and RNA amalgamation in the cerebrum (9). Youngsters prenatally presented to nicotine reliably score lower in the two subcategories of expressive language and theoretical cognizance. Proof from investigations of human neonates proposes that maternal smoking during pregnancy is related with expanded paces of neurobehavioral troubles. A few investigations have connected maternal smoking during pregnancy with youth distractedness, impulsivity, and engine hyperactivity in posterity. Correspondingly, maternal smoking during pregnancy has been related with parent-instructor evaluations of lead issues in kids and a criminal record in youthful grown-ups. An examination by Yousef Tzabi proposed that cigarette smoking during pregnancy might be one of the reasons for hyperactivity and learning shortages in youngsters. In a research facility concentrate with Sprague-Dawley mice, it was demonstrated that hyperactive male little guys that were presented to nicotine prenatally had fundamentally higher nicotinic receptor fixations in the... ...ironment is generally hypoxic, and relating heart useful shortfalls would in this way add to the high frequency of fetal mortality. Similarly as weakened heart work during hypoxia in neonatal rodents can represent the expansion in mortality with delayed hypoxia, tantamount impacts in man would give a component to cardiovascular breakdown and subsequent cerebrum harm or demise during conveyance. The results of smoking during pregnancy are sensational. On the off chance that clinicians can persuade their patients to quit smoking from the get-go in their pregnancy, a significant effect might be made on the frequency of low birth weight newborn children, perinatal dismalness and mortality, just as psychological shortfalls and conduct issues in the posterity. A solid articulation must be made on the issue of tobacco presentation during pregnancy. This could be practiced by educating ladies that their newborn children may not exclusively be littler than their nonsmoking partners, yet their babies may likewise have transient or lasting changes in their lung and cerebrum ultrastructure. A patient who is educated regarding these conceivable long haul impacts of nicotine on her youngster might be increasingly effective with her smoking end.

Saturday, August 22, 2020

Limiting reactants and excess reactants :: GCSE Chemistry Coursework Investigation

Constraining reactants and overabundance reactants In the primary test we saw how Phenolphthalein, thiosulfate what's more, copper (II) sulfate changed their physical properties once blended with NaOH, Iodine and Ammonia I. Presentation A substance response is a change that happens when at least two substances (reactants) cooperate to shape new substances (items). In a compound response, not all reactants are essentially devoured. One of the reactants might be in overabundance and the other might be constrained. The reactant that is totally devoured is called restricting reactant, while unreacted reactants are called overabundance reactants. Measures of substances delivered are called yields. The sums determined by stoichiometry are called hypothetical yields while the real sums are called real yields. The real yields are regularly communicated in rate, and they are frequently called percent yields. In this analysis we joined sulfuric corrosive and fluid barium chloride to create a hasten, barium sulfate and hydrochloric corrosive. The precipitation was detached by filtration and hypothetical yield was determined. We anticipated the restricting reactant and checked our speculation in the lab. II. RESULT ANALYSIS Diagram II. Conversation In this examination we consolidated sulfuric corrosive and aquenous barium chloride to deliver an accelerate, barium sulfate, and hydrochloric corrosive. Our appointed volumes of 0.20 M BaCl were 5mL and 30mL. H SO + BaCl BaSO + 2HCl Subsequent to completing the analysis we figure the mass of BaSO that we segregated. The aftereffects of the two preliminaries were: 0.7g when we utilized 30 mL of BaCl and 0.017g when we utilized 5 mL of BaCl. 1. We determined the hypothetical yield of BaSO utilizing our appointed volume. We realize that: Molarity= # of moles/# of liters, so: Preliminary 1. To locate the quantity of moles we utilize the molarity equation: 30mL= 0.03L 0.2M = #of moles/0.03L = 0.006 moles of BaCl We know from the concoction recipe that there is a 1/1 mole proportion among BaCl and BaSO, and that AW of 1 mol of BaSO = 233.404, so we change moles to grams: 0.006 x (233.404g) =1.400g BaSO Preliminary 2. To discover the no. of moles we utilized the molarity equation: 5.0 mL = 0.005L 0.2M = # of moles/0.005 = 0.001 moles of BaCl AW of 1 mole of BaSO = 233.404g, so we change moles to grams: 0.001 x (233.404g) = 0.233g BaSO 2. Subsequent to deciding the hypothetical yield we determined the percent yield of BaSO: Preliminary 1. The genuine mass of BaSO separated in our examination was 0.

Friday, August 14, 2020

The Value of Creativity

The Value of Creativity This blog is to all the 14s, 15s, 16s+ who are scared after watching the 13 college results this year. In one of my very first blogs on MIT Admissions, I wrote about what I thought was the secret of college admissions. Over the year and a half that Ive been here, after meeting hundreds of people who had since became my classmates and my friends, and now looking at the college admissions process from the other angle (I like to try to identify the MATCH in the people I meet here at MIT its actually really fun. Try it!), this belief had not changed. I usually dispensed the same advice on talk.collegeconfidential.com, but I havent really thought about writing another blog on it until an email popped up (not for the first time) in my inbox requesting me to submit my old college application to an online database which would be used to help applicants formulate their own college applications. It was a MIT senior that was soliciting these applications, and after reading his email, I felt initial outrage, tinged with a hint of sadness. I have a lab report and a Spanish essay due tomorrow and 5.12 to study for, but I feel I must get this off my chest. - To all future applicants, I understand that beginning from this week, when your elder classmates are receiving their decisions from the colleges that they have been obsessing over since middle school, your first day of the application process begins. Day 1. You might be insecure, you might be panicking already. With headlines like Application Numbers Breaking Records plastered all over major newspapers and online forums, you cant help but wonder at your chances of getting into your dream school. Am I doing enough? Am I good enough? Do I need to seek extra help? are a few of the common questions that are running through your mind. Equally, at the other side of the dinner table, your parents are also thinking about your future. Am I doing enough for my child? Does she need a test prep course? Do we need to hire a college counselor? Attractive posters and online advertisements with grinning grads holding diplomas begin filling up your schools hallways and the sites that you visit. Increasingly, you get more and more offers for help in your email inbox. You begin asking yourself, Exactly how much help do I need? Am I good enough to get into college on my own? I want to tell you, right here, and right now: YES, YOU ARE. - Our consumerism culture has taught us that there is no problem that money cannot solve. Accordingly, more and more people believe that money can resolve all problems, as long as enough of it is thrown into the effort. Crops of college counseling services, essay proofreading services, and admission consulting programs spring up faster than ever. These services convince you that with the guidance of admission experts and tried-and-true applications that work, youll be able to also join the ranks of an elite college. But I want to ask you do you really need all that? When did it become that you cant get into college on your own? One value I hold higher than all else when it comes to college admissions is creativity. Like what I asked in the entry I wrote before What is it that makes you tick? Going a little bit deeper, I like to summarize it using the word passion. Passion is getting up at 5.30 AM every morning and braving the morning breeze just so that youll get two hours of swim practice before classes begin. Passion is sitting down at a crowded dinner table, yelling above the pandemonium and trying to instill a sense of order into the kids who live at the orphanage you work at. Passion is noticing the small changes that make a big difference starting a recycling program at your school, helping to tutor struggling middle school students, or organizing a clean up the litter day at your local park. Too often, our society has imposed upon us ideals and molds to get into MIT, you must have had done science competitions; to get into Harvard, you must score above 2300 on the SATs. Similarly, we begin conforming to those molds, accepting the limitations and the boundaries that our society impose upon us. Gradually, we begin to lose our original passion the fire that powers our being and become cookie-cutter people. The essays you write are no longer good enough if they werent edited by a professional editor. The activities that you do are no longer good enough if they arent part of a national organization. The scores that you get are no longer good enough if they dont match up to the scores of the people on College Confidential. Through self-negation and a yearning to be the perfect applicant, I feel that unfortunately too many people have sacrificed who they really are in trying to be somebody theyre not. But how is this relevant? In this day and age, especially with ultra-competitive admissions, college admission officers would like to look for diversity in the applicant pool. To put it one way, college admissions may be akin to painting a picture with the admission officers as the artists. Would the picture look good if it was solely comprised of a single color? College admission officers dabble some here, tweak some there with the ultimate goal of creating a beautiful painting with many interwoven colors. This is why many officers refer to the process of selecting an incoming class as building a class. Thus, why would you negate your own individuality at the risk of becoming another one of those boring spots in the background? I am a firm believer that each one of us has an unique voice that distinguishes us from any other person. Therefore, why do you need books that have compiled essays from past applicants who got in? Why would you need online databases that demonstrate what a winning college application should look like? Seemingly harmless, it is my belief that the more that you expose yourself to the works of other people, the more you begin losing the sense of who you are. In Chinese, we have a proverb that says those who often contact cinnabar* will turn red; those who often contact ink will turn black. In the same vein, the more that you expose yourself to other peoples ideas the more that you risk losing your own. (*cinnabar = HgS crystal that is naturally red. The Chinese use ground cinnabar to make a red ink paste.) Wait, you say, Are you saying that we should not collaborate and share ideas with other people ever? Of course not. There are plenty of places where collaboration is encouraged one glaring example is science: nowadays, almost no significant discovery is made without collaboration. But why the college application? First, I feel like the college application is an intimate extension of yourself your life story presented to the college admission officers. Thus, you already have all the tools that you need to tell your story, because who knows yourself better than.yourself? What is the point of external influences? I feel like they are only swaying you away from who you truly are and your own unique ideas. If you have ideas then let them flow forth. Tell a story about your first love. Paint a picture of your innermost passions. Weave a tapestry of your wildest dreams. Second, I feel like in this over-hyped, over-exploited college admissions generation, being original is a big plus. Having a slightly-flawed application probably doesnt ruin your chances it may even convey sincerity and honesty. Would you like to sound like a thirty-year old man who sits in front of a computer and edits essays? Would you rather be presented as a robot that has stellar grades, but is devoid of feeling? - Alas, I had digressed much. The bottom line is: You dont need to buy a book of collected college essays. You dont need to read other peoples applications to know how to apply to college. You dont need to read other peoples college essays to write your own stellar piece. You dont need a person whos probably double or triple your age telling you what to write and what not to write on your application. Unleash your dreams. Let your creativity run wild. Let the torrents of energy flow forth. And then, you will have achieved your most fervent desires. With sincere regards, Chris Su, 11 ask-oasis [at] mit.edu