Inductive Effect - Lecture 2 Organic Chemistry
By: Collegepedia.in
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Inductive Effect - Lecture 2 Organic Chemistry - Video
Inductive Effect - Lecture 2 Organic Chemistry
By: Collegepedia.in
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Inductive Effect - Lecture 2 Organic Chemistry - Video
Chemistry - Chemical Kinetics (22 of 30) Example of a Second Order Reaction (NO2)
Visit http://ilectureonline.com for more math and science lectures! In this video I will finds the half-life of a 2nd order reaction of NO2 gas.
By: Michel van Biezen
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Chemistry - Chemical Kinetics (22 of 30) Example of a Second Order Reaction (NO2) - Video
Perceptions on the Future of Biotechnology by Robert Paarlberg (USA)
Presentation by Dr. Robert Paarlberg, Professor of Policial Science at Wellesley College (USA), delivered at the Borlaug Summit on Wheat for Food Security in...
By: CIMMYT
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Perceptions on the Future of Biotechnology by Robert Paarlberg (USA) - Video
Biotechnology Paperslide Review by Khalizarek+Brian
By: Tarek Zikry
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Biotechnology Paperslide Review by Khalizarek+Brian - Video
Faces of UCR Bioengineering c/o 2014
via YouTube Capture.
By: John Clark
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Faces of UCR Bioengineering c/o 2014 - Video
May 5, 2014: Dr. Lozano #39;s Biochemistry pt.2
By: Jean-Paul Accetta
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May 5, 2014: Dr. Lozano's Biochemistry pt.2 - Video
April 28, 2014: Dr. Lozano #39;s Biochemistry pt.2
By: Jean-Paul Accetta
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April 28, 2014: Dr. Lozano's Biochemistry pt.2 - Video
April 29, 2014: Dr. Lozano #39;s Biochemistry pt.2
By: Jean-Paul Accetta
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April 29, 2014: Dr. Lozano's Biochemistry pt.2 - Video
May 9, 2014: Dr. Lozano #39;s Biochemistry pt.2
By: Jean-Paul Accetta
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May 9, 2014: Dr. Lozano's Biochemistry pt.2 - Video
May 13, 2014: Dr. Lozano #39;s Biochemistry pt.1
By: Jean-Paul Accetta
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May 13, 2014: Dr. Lozano's Biochemistry pt.1 - Video
Calcaneal Pin Insertion Anatomy - Everything You Need To Know - Dr. Nabil Ebraheim
Educational video describing technique for calcaneal pinning. Become a friend on facebook: http://www.facebook.com/drebraheim Follow me on twitter: https://twitter.com/#!/DrEbraheim_UTMC...
By: nabil ebraheim
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Calcaneal Pin Insertion Anatomy - Everything You Need To Know - Dr. Nabil Ebraheim - Video
Nanomedicine could one day provide a wide range of treatments, but possible toxicological effects from nanoparticles are still a cause of considerable concern. Studies have shown that nanoparticles tend to accumulate in the liver and spleen, but until now there have been limited ways to monitor the exposure of these organs without taking a sample from the tissue itself which could be fatal. Now, researchers at the University of Toronto have demonstrated that a glance at the skin can reveal the level of nanoparticle exposure and that measuring nanoparticle content in a skin sample can quantitatively indicate the concentration within internal organs.
"The skin of mice injected with high doses of gold nanoparticles turned blue," explains Warren Chan from the University of Toronto and team leader in the research project. "We've been working on nanoparticles for 15 years and never seen skin colour changing, but then before we never injected at such high doses." He tells nanotechweb.org that these higher dosage studies were prompted by the suggestion that nanoparticle toxicity is probably linked to dosage.
"Now we've proved that the concentration of nanoparticles in the skin is linked to concentrations in other organs and that there is a direct correlation," says Chan. "This means you can see nanoparticle accumulation through colour change in the skin or fluorescence under a UV lamp and then you can have a small skin biopsy to assess how much you've been exposed."
Spectroscopic studies of skin samples confirmed that the nanoparticle accumulation in the skin increased linearly with dosage. The researchers then microscopically analysed skin samples taken from mice at times ranging from 4 to 504 hours after injection. They found that at low dosages, nanoparticles accumulated in macrophage cells, but at higher dosages the particles were found in the space between cells.
"Macrophages gobble up foreign materials and break them down for removal from the body," explains Chan. "But when the dosage is too high, the macrophages in the skin cannot handle them all so theres what we call a 'spill-over effect', where the nanoparticles reside in the space between cells."
Comparing samples from the skin, liver and spleen demonstrated a linear relation between the accumulation levels in these organs. This finding implies that the concentration accumulated in the liver or spleen could be quantitatively determined simply by multiplying the measured skin content by a constant.
The research team also investigated whether skin accumulation occurred for other types of nanoparticle. Although the skin did not seem to change colour when quantum dots were used instead of gold nanoparticles, under a UV lamp the mice began to glow. Different alloys of quantum dots fluoresced green, yellow and red when exposed to UV light, which is in line with the known spectral properties of the quantum dots, confirming that the quantum dots and not the associated ions were residing in the skin. As for the gold nanoparticles, the quantity of quantum dots in the skin was linearly correlated with the injection dose.
At low dosages, the fluorescence itself was patchy, but the studies of skin samples indicated that quantum dots were in fact still present. A probable explanation for this finding is that the quantum dots had accumulated at different depths in the skin.
"UV light doesnt penetrate deep into the body," explains Chan, "So now, because we know a large concentration of nanoparticles accumulate in the skin, we may be able to use UV light to manipulate the nanoparticles' function." The researchers are now investigating the potential of using UV light to trigger drug release.
The results imply that fewer animals may be needed for future toxicology studies. Perhaps more significantly, this method of visualizing and quantifying nanoparticles may enable human exposure to be monitored. "At the moment theres no way of measuring this," adds Chan.
First, a confession: I prefer the Sox, but if the Cubs are having a decent year, I'll root for them too.
I know it's heresy to say so around here, but I'm mostly a fan of good local baseball, no matter whether the uniform is black and the ballpark comfortable or the uniform is blue and the ballpark a testament to the mediocre crowd-management capabilities of our forefathers.
In any event, it doesn't look like there'll be much of an issue this year. The White Sox are playing respectable, scrappy baseball (although less so of late) on the city's South Side. Up north, the Cubs continue to show up for games, at least.
Agnosticism such as mine, of course, is not the regional norm. Pick a team, then live (and die) with them, seems to be the credo. Your blood should run one color or the other, and the easiest time to be cordial to a fan of the other side is when you are both cheering for the Bears.
But it is one thing to know or to live the Cubs-Sox rivalry. It is another to devote an entire museum exhibition to it. The Elmhurst Historical Museum has done so, with a keen eye for telling detail, in the new "Sox vs. Cubs: The Chicago Civil Wars."
It's a three-room homage to a two-team town, to what it means to have had a pair of professional franchises fighting for people's loyalty for more than a century.
Cubs songs and Sox songs find their place here. Harry Caray, announcer for both teams, is prominent. So are replicas of the scoreboards, Wrigley Field's so much more stately. Bats and other tchotchkes given away at the gate decorate many surfaces. Kids can set lineups using magnetized baseball cards.
Even the souvenir shop seems to ask you to proclaim your loyalty. Whose vintage pennant will you buy, which book of team lore? Only the official exhibition souvenir splits the difference, "Sox vs. Cubs" printed on the barrel of a $5 mini baseball bat.
The exhibition does not pick sides, either, although curator Lance Tawzer has cleverly split the rooms whenever possible, Sox stuff on the left, Cubs on the right. It's not a ranking or a political choice, just a reminder of the segregation that exists.
One of his centerpieces is cerebral. It's a data-rich, full-wall chart comparing the teams through their histories. We see all the team logos, all of the uniforms, including ones from the era when the White Sox dressed like a softball team. We see the early team names, including the perhaps surprising one that the Cubs first used: the White Stockings.
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'Sox vs Cubs': Rivalry as an exhibit
Outreach, Inc. Releases Church Resources for 'God's Not Dead' Movie
Youth and Adult Bible Studies Based on New Motion Picture Provide Powerful Opportunity for Churches
Contact: Erica Rupp, 719-955-9600 ext 3389,erupp@outreach.com
COLORADO SPRINGS, Colo.,May 15, 2014 /Christian Newswire/ -- It has grossed more than $57 million in box office sales since its March 21 release and continues to be a success -- and now the hit film "God's Not Dead" has inspired the creation of movie-related Bible studies for youth and adults. Outreach, Inc., the nation's leading provider of church communications resources, is co-publishing the Bible study materials with Pure Flix Entertainment for a June 2014 release.
Both the youth and adult small group studies help answer the question of God's existence and what it really means to stand up for your faith in a culture that often challenges your beliefs. The studies feature video clips from the movie, a study guide with Scripture readings, group discussion points, and a leader's guide. Interested churches, pastors or lay leaders are encouraged to learn more about the "God's Not Dead" campaign resources by visiting Outreach.com/GodsNotDead.
"These 'God's Not Dead' resources create a tremendous opportunity for churches to help their members and community discover what they believe and how to stand for it," said Eric Abel, vice president of marketing for Outreach, Inc. "It's also a chance for them to reach out to the millions of people who have seen the movie and have more questions about the existence of God."
Additional resources for churches are available at Outreach.com, including a "God's Not Dead" Church Kit that includes everything needed to launch a sermon series and small groups for adults and youth.
"God's Not Dead," produced by Pure Flix Entertainment and Red Entertainment, surpassed expectations when it grossed over $8 million dollars in its limited release to fewer than 800 theaters in March on opening weekend. The film continued to gain momentum and has remained in the top 10 films at the box office for 7 weeks and counting. Josh McDowell said of the movie, "God is NOT Dead...is a must. An Incredible, believable plot that causes one to question agnosticism."
Founded in 1996, Outreach, Inc. has become the largest provider of church outreach products and services in the world. With a mission to share God's love and empower the church to share the message of Jesus Christ, Outreach provides cost-effective, proven resources in a variety of forms, including books, media and film, postcard invitations, banners, bulletin covers, curriculum, church campaign materials and more.
For more information, please contact Erica Rupp at 719-955-9600 ext 3389 or erupp@outreach.com.
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Outreach, Inc. Releases Church Resources for 'God's Not Dead' Movie
Health Ranger calls for increased science education in America to combat scientific illiteracy
Scientific illiteracy has run rampant across America, with many scientists, doctors and journalists unable to carry on intelligent conversations about toxic heavy metals or the difference between...
By: TheHealthRanger
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Health Ranger calls for increased science education in America to combat scientific illiteracy - Video
People of all stripes whether green-living gurus or thrifty penny pinchers, conservatives or liberals want to use less energy. Now, technology and behavioral science are giving them the tools to do it.
On the first Earth Day in 1970, environmental sentiment was proudly worn and fiercely optimistic. It tapped into a deep concern for our future shared by young and old; rich and poor; left, right, and center. Now, as the world faces an accelerating global climate crisis, political will has faded and divided. Grand bargains are far from view. And failure to find common ground and cut carbon pollution could tank the biosphere in ways we cant imagine.
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And yet, today, Im hopeful.
Even though almost all climate scientists agree that human activity is warming the planet, climate change remains politically divisive. But the same can no longer be said of climate solutions. A growing body of evidence suggests that people everywhere, of every political stripe, want to use less energy derived from fossil fuels. And now, technology, economics, and science are aligning behind them.
If the public and private sectors can work together and seize this moment, millions of Americans will soon have powerful new tools to reduce their energy consumption and curb our carbon emissions. The four big ideas below outline the space where consumers and companies, government and industry, left and right find that their common interests saving energy and money align to help save the planet.
On April 23, 1970, The New York Times wrote of the original Earth Day: Conservatives were for it. Liberals were for it. Democrats, Republicans, and independents were for it. So were the ins, the outs, the executive and legislative branches of Government.
Today, Im not sure you could write the same sentence. But you could about energy efficiency. Our behavior as energy consumers is nearly universal; we dont like waste. We dont like throwing money out the window. We want to be good neighbors and good citizens. As it turns out, these things mean as much to people in red states as they do to people in blue states.
Theres plenty of data to prove it, but its easier to look at our statehouses. Even at a time of profound political division, energy efficiency laws have quietly swept across more than half the union from North Carolina to Texas to California. Everyone agrees we shouldnt be wasting energy, and nearly everyone agrees we should be doing something about it.
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Climate change is divisive. Climate solutions are not.
2 hours 58 minutes ago by PRESS RELEASE
It's a moment the married mother of three children, and grandmother of five, has been anticipating for 43 years.
"It was just something I always wanted to do," said Rasmussen, who will be awarded a bachelor's degree in General Studies, with a concentration in behavioral science, at Spring 2014 Commencement ceremonies.
Georgia was just shy of earning a degree from UL Lafayette in 1971, when she, husband Mike and their young son moved to California. Mike, who earned a computer science degree from UL Lafayette in 1970, had enlisted in the U.S. Navy, and would remain stationed in San Diego for four years.
At the time of the move, Georgia had earned 129 hours as an elementary education major. She planned to complete a few remaining degree requirements once the family got settled. But, as she puts it, "life happened."
The couple shared one car, which made attending college classes difficult. Tuition costs in California turned out to be higher than expected. And, as the demands of family life slowly took over, Georgia's college dreams receded.
But they never faded completely. Last fall, she enrolled in the University's distance learning program. "It was my turn," Georgia quipped. Mike, who earned two advanced degrees over the years, agrees. He says "Gee Gee," as he calls Georgia, spent years putting her family's needs first.
The couple, who moved to the New Orleans area after Mike retired from the Navy, raised three children - two sons and a daughter - before relocating to Matthews, N.C. in 1998.
Along the way, Georgia made "significant contributions to our community in city government, the local school system, community hospital, social organizations and Chamber of Commerce," Mike stated via email.
Her devotion helped all of the couple's children earn college degrees, and go on to successful careers. Michael, 44, is a restaurant manager in North Carolina; Christopher, 39, is an attorney in Chicago; and Karen Foster, 35, is an office manager in North Carolina.
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Wife, mother decides it's her turn to get college degree
Like a Jehovahs witness, if you show up at their door and say, Can I interest you in some behavioral economics, theyll say no
When news broke this January that New York magazine was expanding its trademark brand of psychology-backed cultural analysisplayed out in features about dating, parenting and popularityinto a vertical covering social science, the news was a hiccup in the splashier announcement that the mag was reducing its print edition.
The vertical, Science of Us, launched quietly earlier this week, with an array of pieces tying psychology and behavioral economics to the way we live. Louis C.K.s exploration of dating while a fat woman was explored in a newsy piece on why overweight men find it easier to attract partners than their overweight female counterparts and an explanatory piece, perfectly designed for Facebook swapping, gave scientifically-informed tips on winning political arguments. (In the first four hours it was posted, it was shared 61 times.) Theres also the usual quick coverage of takeaways from psychology studies and a more substantial piece by Lisa Miller, exploring whether anxious people make more moral decisions.
Science of Us aspires to explain human experience through social sciencea task which, at its best, is fascinating and illuminating and at its worst is incredibly problematic and fear-mongering. CJR caught up with editor Jesse Singal a few weeks before launch, to talk about how New York is championing social science, and how the magazines breezy tone can translate into rigorous coverage.
Why did New York decide to dedicate a space to social science?
I think that their thought was that you can get people in by asking universal questions about anything. And theyve had some very successful magazine features in that space. Like Jennifer Seniors high school parenting piece [The Collateral Damage of a Teenager.] Her stuff in general, I think it did well. The pieces, which on the one hand dealt with universal themes and, on the other hand, when you read themshe actually gets pretty wonky. Like, in this very lively New York Magazine friendly kind of way. Theres a lot of good social science in there and people want to read this stuff. And once theyre in the door you can sort of bring them a lot of social science if you do it in the right way. This is sort of my line, not New York magazines line, but I think everyone is interested in social sciencethey just dont know it. Like a Jehovahs witness, if you show up at their door and say, Can I interest you in some behavioral economics, theyll say no.
So how does this kind of story change when youre shifting from print to digital?
In some ways, its the same. Like, we want to occasionally run those bigger feature stories that hopefully generate a lot of discussion and controversy. But we also need to figure out a way to tackle the news on a daily basis. So one of the big questions were struggling with is: When is it time to jump on a news story?
Alexis Sobel Fitts is an assistant editor at CJR. Follow her on Twitter at @fittsofalexis.
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New York launches new social science vertical
It's premature to call the compound, alpha-ketoglutarate, an antiaging drug, but it has been found to extend the longevity of C. elegans by 50 percent
Caenorhabditis elegans treated with a -ketoglutarate displayed youthful vigour even after two weeks. Credit:Zeynep F. Altun via Wikimedia Commons
A compound available in some dietary supplements extends lifespan in the nematode worm Caenorhabditiselegansby interfering with cellular energy production and mimicking the effects of severe calorie restriction. The results, published online inNaturetoday, suggest that the compound, called -ketoglutarate, could provide a way to increase longevity.
Though intriguing, data linking the compound to longevity are limited to short-term studies in a worm and should not lead people to start taking -ketoglutarate supplements, cautions Matt Kaeberlein, who studies ageing at the University of Washington in Seattle. I'm not sure I would characterize -ketoglutarate as an anti-ageing drug yet, says Kaeberlein, who was not involved in the study. Its premature.
Power interruption Chemical biologist Jing Huang at the University of California in Los Angeles and her colleagues stumbled on -ketoglutarate while screening metabolites for the ability to improve lifespan inC. elegans. -ketoglutarate boosted longevity by about 50% over untreated controls.
Differences in behavior were also clear, says Huang: as untreated worms surpassed the age of two weeks, they became sluggish. They move their head if you poke them, she says, but otherwise theres not much activity. Treated nematodes, however, wriggled and squirmed with youthful vigor.
-Ketoglutarate is a component of a metabolic pathway called the tricarboxylic acid cycle, which is part of cells' energy-generating machinery. Huang and her colleagues found that -ketoglutarate can also inhibit a crucial enzyme called ATP synthase. That enzyme is the main producer of ATP, the chemical energy currency in cells, and so reduces energy production in the body.
Huang and her colleagues reasoned that the interruption in energy production could mimic the effects of diets very low in calories, which have beenshown to extend lifespan in some animals.To back up this notion, they also showed that calorie restriction raised levels of -ketoglutarate.
Calorie counter Calorie restriction had no added effect on longevity in worms given -ketoglutarate, suggesting that the metabolite is a key part of the mechanism by which low-calorie diets aid longevity. If this is so, the findings hint at a way to gain the benefits of calorie restriction without the suffering. Only a dedicated few are able to withstand the rigors of such dietary deprivation.
But while the results are promising, researchers need to pursue longer-term studies in animals that more closely resemble humans to fully understand -ketoglutarates potential, cautions Brian Kennedy, president of the Buck Institute for Research on Aging in Novato, California. We dont just want to make the animals live longer, he adds. We want to make them healthy longer.
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Lifespan Boosted in Worms via Dietary Supplement Compound