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Martin Burrett

BBC - Acids, bases and metals - 81 views

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    A great animated and interactive science presentation from the BBC about acids, bases and metals. http://ictmagic.wikispaces.com/science
Jennie Snyder

Atul Gawande: How Do Good Ideas Spread? : The New Yorker - 36 views

  • Why do some innovations spread so swiftly and others so slowly
  • Consider the very different trajectories of surgical anesthesia and antiseptics, both of which were discovered in the nineteenth century.
  • The first public demonstration of anesthesia was in 1846.
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  • nsisted that he had found a gas that could render patients insensible to the pain of surgery.
  • The idea spread like a contagion, travelling through letters, meetings, and periodicals. By mid-December, surgeons were administering ether to patients in Paris and London. By February, anesthesia had been used in almost all the capitals of Europe, and by June in most regions of the world.
  • On October 16, 1846, at Massachusetts General Hospital, Morton administered his gas through an inhaler in the mouth of a young man undergoing the excision of a tumor in his jaw.
  • Four weeks later, on November 18th, Bigelow published his report on the discovery of “insensibility produced by inhalation” in the Boston Medical and Surgical Journal.
  • There were forces of resistance, to be sure. Some people criticized anesthesia as a “needless luxury”; clergymen deplored its use to reduce pain during childbirth as a frustration of the Almighty’s designs.
  • Yet soon even the obstructors, “with a run, mounted behind—hurrahing and shouting with the best.” Within seven years, virtually every hospital in America and Britain had adopted the new discovery.
  • Sepsis—infection—was the other great scourge of surgery. It was the single biggest killer of surgical patients, claiming as many as half of those who underwent major operations
  • nfection was so prevalent that suppuration—the discharge of pus from a surgical wound—was thought to be a necessary part of healing.
  • In the eighteen-sixties, the Edinburgh surgeon Joseph Lister read a paper by Louis Pasteur laying out his evidence that spoiling and fermentation were the consequence of microorganisms. Lister became convinced that the same process accounted for wound sepsis.
  • Lister had read about the city of Carlisle’s success in using a small amount of carbolic acid to eliminate the odor of sewage, and reasoned that it was destroying germs. Maybe it could do the same in surgery.
  • During the next few years, he perfected ways to use carbolic acid for cleansing hands and wounds and destroying any germs that might enter the operating field.
  • The result was strikingly lower rates of sepsis and death.
  • Far from it.
  • Surgeons soaked their instruments in carbolic acid, but they continued to operate in black frock coats stiffened with the blood and viscera of previous operations—the badge of a busy practice.
  • hey reused sea sponges without sterilizing them.
  • It was a generation before Lister’s recommendations became routine and the next steps were taken toward the modern standard of asepsis—that is, entirely excluding germs from the surgical field, using heat-sterilized instruments and surgical teams clad in sterile gowns and gloves.
  • Maybe ideas that violate prior beliefs are harder to embrace. To nineteenth-century surgeons, germ theory seemed as illogica
  • The technical complexity might have been part of the difficulty. Giving Lister’s methods “a try” required painstaking attention to detail.
Mary Mjelde

Acid Rain Students Site - 36 views

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    This site deals with acid rain, explaining what it is, how it is causes, why it is harmful, what is being done, etc. It also has games/activities and a video clip.
anonymous

Dogs Are What They Eat - PawNation - 15 views

  • There are six nutrient groups that are important for all dogs: proteins, carbohydrates, fats, vitamins, minerals, and water.
    • anonymous
       
      Use the vitamin video from YouTube. www.youtube.com/ksdfjsdflj
  • Essential amino acids are those that are required in the diet because your dog's body is incapable of synthesizing them in sufficient quantities.
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  • Fatty acids, a specific type of fat, play an important role in regulating the body's inflammatory response and are particularly important for your dog's health – particularly for the skin and a coat.
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    What a dog needs in their diet to be healthy.
Kenuvis Romero

CIA, MK Ultra & Origins Of Acid Counter Culture, Jan Irvin, Joe Atwill 16May2013 - YouTube - 1 views

  • rule of non--contradiction that A=A and cannot be non-A. Any MEANINGFUL investigation of natural phenomena violates the out-moded straightjacket of Classical Logic.
Kenuvis Romero

Psilocybin (magic mushrooms) - 0 views

  • The biosinthetic path that allow Psilocybin to be produced by mushrooms is as follow:
  • The several analogyes with triptophan aminoacid, with whom psilocybin has common origines are probably at the base of psilocybin ability to induced psychedelich alteration on humans.
  • Amino acids, including tryptophan, act as building blocks in protein biosynthesis. In addition, tryptophan functions as a biochemical precursor for many compounds like serotonin Serotonin (a neurotransmitter), synthesized via tryptophan hydroxylase. Serotonin, in turn, can be converted to melatonin (a neurohormone), via N-acetyltransferase and 5-hydroxyindole-O-methyltransferase activities
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  • it's been noticed that psilocyn can indirectly raise dopamine concentration withing the basal ganglia.
  • Almost 50% of oral psilocybin is absorbed by stomach and gut; from here is lead to liver, where it's converted in psilocin, pharmacologically active form, that can furtherly be glucoronated and escreted with urine or converted in other psilocinics metabolites.
  • In rats, the median lethal dose (LD50) when administered orally is 280 milligrams per kilogram (mg/kg), approximately one and a half times that of caffeine. When administered intravenously in rabbits, psilocybin's LD50 is approximately 12.5 mg/kg
  • traces of the compund can be detected in unine even after 7 days.
  • Clinical studies show that psilocin concentrations in the plasma of adults average about 8 µg/liter within 2 hours after ingestion of a single 15 mg oral psilocybin dose; psychological effects occur with a blood plasma concentration of 4–6 µg/liter. Psilocybin is about 100 times less potent than LSD on a weight per weight basis, and the physiological effects last about half as long.
  • Within 24 hours from administration 65% of the alucinogen is escreted by urine, while another 15-20% is excreted by bile and feces.
  • Monoamine oxidase inhibitors (MAOI) have been known to prolong and enhance the effects of psilocybin. Alcohol consumption may enhance the effects of psilocybin, because acetaldehyde, one of the primary breakdown metabolites of consumed alcohol, reacts with biogenic amines present in the body to produce MAOIs related to tetrahydroisoquinoline and β-carboline. Tobacco smokers can also experience more powerful effects with psilocybin, because tobacco smoke exposure decreases levels of MAO in the brain and peripheral organs.
  • This could lead to a lower usage o f glucose, but the same study admitted an increase glucose usage by the whole brain cell, meaning a differente use of this sugar while the drug is having effects.
  • use of MRI (functional magnetic resounance) showed that the decresed blood flow associate with decreasing in neural activity. A simple explanation for this unexpected situation could be the serotoning agonist action of psilocybin, action that seems to be focused more on 5-HT receptors than on 5-HT2A.
  • psilocibyn is able to act as a 5-HT agonist binding directly its receptors.
  • augmented glucose consumption in several brain regions; this lead to the conclusion that psilocybin is some way able to modify the physiological glucosal metabolic rate of our body
  • The strong inibition of the PCC is now thought to be most significant action of psilocybin on neural disaccoppiation
    • Kenuvis Romero
       
      Lower brain glucose metabolism is linked with increased capacity for working memory.
  • Psilocybin comprises approximately 1% of the weight of Psilocybe cubensis mushrooms, and so nearly 1.7 kilograms (3.7 lb) of dried mushrooms, or 17 kilograms (37 lb) of fresh mushrooms, would be required for a 60-kilogram (130 lb) person to reach the 280 mg/kg LD50 value.
  • psilocybin can cause anxiety and increased heart rate and BP which is very counter- productive for someone on metoprolol and micardis.
  • propose the possibility to use psilocybin as a palliative therapy for terminal illness like cancer but also as a real antidepressive active principle available for the family of the patient. The rational is foundable in the fact that we usually administer SSRI as antidepressive agents, so psilocibyn sholud be useful in this purpose for its selective agonist action on 5-HT2A receptors
Dominic Salvucci

Free Acid Loops Beats & Audio Samples Acapellas Vocals Music Sounds FX Tutorials Vsti P... - 0 views

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    Open source music, you must join for free to use.
Jac Londe

Keys to long life: Longevity study unearths surprising answers - 41 views

  • Keys to long life
  • Friedman and Leslie R. Martin , a 1996 UCR alumna (Ph.D.) and staff researchers, have published those findings in "The Longevity Project: Surprising Discoveries for Health and Long Life from the Landmark Eight-Decade Study" (Hudson Street Press, March 2011).
  • It's never too late to choose a healthier path, Friedman and Martin said. The first step is to throw away the lists and stop worrying about worrying. "Some of the minutiae of what people think will help us lead long, healthy lives, such as worrying about the ratio of omega-6 to omega-3 fatty acids in the foods we eat, actually are red herrings, distracting us from the major pathways," Friedman said. "When we recognize the long-term healthy and unhealthy patterns in ourselves, we can begin to maximize the healthy patterns." "Thinking of making changes as taking 'steps' is a great strategy," Martin advised. "You can't change major things about yourself overnight. But making small changes, and repeating those steps, can eventually create that path to longer life."
Angela Hagan

Aspirin stimulates insulin - 6 views

  • AbstractNormal subjects and patients with adult-onset diabetes received 10 gm. of aspirin in four days. On the fourth day, the fasting serum glucose and the glucose response to oral glucose were decreased in both groups. These changes were associated with increased levels of serum insulin and pancreatic glucagon, although the glucagon responses to oral glucose were unchanged. In the diabetic patients, aspirin therapy was followed by a decreased glucose response to I.V. glucose and by the appearance of an early insulin peak, which could not be demonstrated before treatment. Aspirin did not affect the I.V. glucose tolerance in normal subjects, although it did enhance the early insulin peak. A decrease in the fasting levels of free fatty acids was noted in both groups, whereas the fasting level of triglycerides decreased only in the diabetic patients. Cholesterolemia did not change in either group. A few preliminary observations indicate that, in normal subjects, ibuprofen and ketoprofen, two other presumed prostaglandin inhibitors, did not affect fasting glycemia, glucose tolerance, or the insulin response to glucose. No changes were noted after the administration of placebo. Last A1C 4.8No Rx, Diet modification, exercise, Supps and HerbalsI am a retired HYPOGLYCEMIC Reply With Quote 11-08-2010 #2 trinitarian3n1 D.D. Family Moderator Join Date November 2007 Location In the mitten, USA Age 41 Posts > 100 About T2 dx 3/07, tx w/very lo carb D&E Met, bolus R Blog Entries 127 That's a hefty dose of aspirin. John C.A clean house is the sign of a broken computer.Last HgbA1c - 5.5% 2/2011 Reply With Quote 11-08-2010 #3 MCS D.D. Family Join Date August 2010 Posts > 100 About T2, trying to live a healthy life Yes it is, 650mg 4 times a day. I wonder if they did that to make sure they had a response and if there is a break point of some lower dose. I am on 325 once a day now. Been that high in the past for other things, lots of ringing in the ears when you get that high of a dose. Last A1C 4.8No Rx, Diet modification, exercise, Supps and HerbalsI am a retired HYPOGLYCEMIC Reply With Quote 11-08-2010 #4 furball64801 D.D. Family Join Date December 2009 Posts > 100 About type 2 25 yrs mother aunt type 2 thin 50 yrs Blog Entr
  • The therory is that it helps to regenerate the once turned off Beta cells, not over working the exiting ones. This is just one article I found, they are many, most of them concern Salsalate a drug used for arthritis. It works by lowering the inflammation of the liver and pancreas. Lowers IR, its a pretty interesting concept based largerly on inflammation of one muscles and organs. Originally Posted by jeanne wagner i know for heart health they recommend the baby 81 mg a day. I would think you wouldn't have a stomach lining left if you took that on a daily basis. Also just because it stimulates insulin doesn't mean it is a good thing. Sulfonyureas also overstimulate insulin and there is some thought they lead to beta cell burnout. I think it is better to find things like metformin that make you more sensitive to the insulin you naturally make. Last A1C 4.8No Rx, Diet modification, exercise, Supps and HerbalsI am a retired HYPOGLYCEMIC Reply With Quote 11-08-2010 #7 MCS D.D. Family Join Date August 2010 Posts > 100 About T2, trying to live a healthy life Here is a few more articles concerning NSAID's and insulin if you are interested.http://www.annals.org/content/152/6/346.abstracthttp://onlinelibrary.wiley.com/doi/1...026.x/abstracthttp://www.theannals.com/cgi/content/abstract/44/7/1207 Last A1C 4.8No Rx, Diet modification, exercise, Supps and HerbalsI am a retired HYPOGLYCEMIC Reply With Quote MCS was thanked for this post by: Nan-OH 11-08-2010 #8 CalgaryDiabetic D.D. Family Join Date June 2009 Location Calgary,Canada Posts > 100 About diabetic since 1997, on insulin 2000 Guarantied tummy ulcer with so much aspirin. Reply With Quote 11-09-2010 #9 MCS
Holly Barlaam

Cellular Respiration Interactive Animation - 98 views

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    In-depth interactive walkthrough of cellular respiration. Easy to use. Suggested level on the website says high school, but it is very detailed--more appropriate for AP Biology or college level biology (or even biochemistry) courses.
Martin Burrett

Experiment testing Acidity of bodies of water near you - Year of Chemistry - 0 views

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    Take part in what is being called the biggest experiment ever. As part of the International Year of Chemistry, children from cross the world are measuring the pH of bodies of water in them. Collect real data to plot the effects of climate change on your seas, rivers and lakes. http://ictmagic.wikispaces.com/Science
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