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Pamela Saunders

Over-Regulation of Parthenotes Stifles Valuable Scientific Research - 0 views

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    A recent article in Scientific American questioned whether research on stem cell lines derived from unfertilized eggs was too tightly regulated by the federal government. Now that technology allows the creation of stem cells without fertilization, there is no question that federal laws and guidelines are overly restrictive, causing a detrimental effect on valuable scientific inquiry.
Charles Daney

Will Power: You Grow With The Task -- Ingenious Monkey - 20 two 5 - 0 views

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    Following Baumeister et al.'s widely cited work on self-regulation, many psychologists view will-power as a depletable resource. According to this view, whenever we perform acts of self-regulation (e.g. resisting a delicious piece of cake) we tap into our individual will-power reservoir (think of it as a bank account), and thereby reduce the amount of will-power left for subsequent tasks. According to a study published in the Journal of Applied Psychology, however, this plausible intuition does not necessarily seem to hold true entirely.
Erich Feldmeier

J. Lee, Vincent Harley: The male fight-flight response: MAO-A, A result of SRY regulati... - 0 views

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    "Males and females differ in their biobehavioural response to stress, where males exhibit a heightened sympathetic response to stress compared with females. Specifically, Taylor et al. 1 propose that the classic "fight-or-flight" response to stress is adaptive for males, whilst females engage in a so-called "tend-and-befriend" response to stress. We propose that the Y-chromosome gene, SRY (sex-determining region on the Y chromosome), provides a genetic basis for the heightened sympathetic reactivity to stress and thus predominance of "fight-flight" response in males. Our idea is based on studies that demonstrate (i) the presence of SRY in brain regions and peripheral tissues abundant in catecholamines, (ii) the regulation of catecholamine synthesis and breakdown by SRY, and (iii) the role of SRY in voluntary movement and blood pressure in males"
Erich Feldmeier

uBiome -- Sequencing Your Microbiome | Indiegogo - 0 views

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    "uBiome is a citizen science project that allows the public access to cutting edge sequencing technology to understand their health through the microbiome. How does the microbiome affect my health? We are all covered in trillions of microbes -- in fact, they outnumber human cells 10:1. The trillions of bacteria live on and in us are collectively called the microbiome. Like the rainforest, the healthy human microbiome is a balanced ecosystem. The correct balance of microbes keeps potential pathogens in check and regulates our immune system. Microbes also perform essential functions such as digesting food and synthesizing vitamins. Studies have also linked the microbiome to human mood and behavior, as well as many gut disorders, eczema, and chronic sinusitis."
Erich Feldmeier

Gerd Moe-Behrens: Frontiers | Preparing synthetic biology for the world | Frontiers in ... - 0 views

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    "Synthetic Biology promises low-cost, exponentially scalable products and global health solutions in the form of self-replicating organisms, or "living devices." As these promises are realized, proof-of-concept systems will gradually migrate from tightly regulated laboratory or industrial environments into private spaces as, for instance, probiotic health products, food, and even do-it-yourself bioengineered systems. What additional steps, if any, should be taken before releasing engineered self-replicating organisms into a broader user space? In this review, we explain how studies of genetically modified organisms lay groundwork for the future landscape of biosafety."
Erich Feldmeier

Gomez-Pinilla: Diabetes 'Metabolic syndrome' in the brain: deficiency in omega-3 fatty ... - 0 views

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    "We provide novel evidence for the effects of metabolic dysfunctions on brain function using the rat model of metabolic syndrome induced by high fructose intake. * We describe that the deleterious consequences of unhealthy dietary habits can be partially counteracted by dietary supplementation of n-3 fatty acid. * High sugar consumption impaired cognitive abilities and disrupted insulin signalling by engaging molecules associated with energy metabolism and synaptic plasticity; in turn, the presence of docosahexaenoic acid, an n-3 fatty acid, restored metabolic homeostasis. * These findings expand the concept of metabolic syndrome affecting the brain and provide the mechanistic evidence of how dietary habits can interact to regulate brain functions, which can further alter lifelong susceptibility to the metabolic disorders. "
Erich Feldmeier

Hachung Chung Species-Specific Microbes May Be Key to a Healthy Immune System: Scientif... - 0 views

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    "Mice have a jungle of bacteria, viruses and fungi in their stomachs-and so do we. These microorganisms help both mice and us break down dinner. As we are finding, these bugs also help to regulate the immune system. But we are just starting to learn how these tiny organisms influence us and how changing their composition changes us... Interestingly, though, the mice with these microbes did not: their immune systems remained underdeveloped. Even when researchers gave rat microbiota to mice, the mice's immune systems failed to mature"
Erich Feldmeier

Denis Burdakov: Diabetes wissenschaft.de - Das Eiweiß macht´s - 0 views

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    "Um schnell wieder auf Touren zu kommen, gilt für viele Menschen ein zuckerhaltiger Snack als hilfreich, denn er setzt schnell Energie im Körper frei. Das könnte aber genau die falsche Strategie sein, sagt nun ein internationales Forscherteam: Dessen Untersuchungsergebnisse an Mäusen legen nahe, dass die Zufuhr von Kohlenhydraten eher müde macht, wohingegen eiweißhaltige Nahrung anregt und die Verbrennung von Kalorien ankurbelt. Der Studie zufolge liegt das an der Wirkung der Eiweißbausteine auf die sogenannten Orexin-Zellen, die an der Regulation des Schlaf-Wach-Rhythmus und des Appetits beteiligt sind. Die neuen Erkenntnisse könnten demzufolge auch wichtige Informationen für das Verständnis von Schlafstörungen und Übergewicht liefern, sagen Denis Burdakov von der University of Cambridge und seine Kollegen. "
Erich Feldmeier

S. Herpertz, Schattauer: Affektregulation und ihre neuro biologischen Grundlagen - 0 views

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    Auch der X-chromosomal lokalisierte genetische Polymorphismus des Monoaminooxydase-A-Gens, eines Schlüsselenzyms im Katabolismus von Serotonin und anderen Monoaminen, zeigt eine Beziehung zu Aktivierungsmustern in Hirn arealen, die bedeutsam für die Affektregulation sind. So fand sich bei Trägern des Low(L)-Allels im Vergleich zu Trägern des High(H)-Allels eine höhere Aktivität der Amygdala und eine geringere Aktivität in cingulären und orbitofrontalen Arealen, die auch mit strukturellen Unterschieden, nämlich geringeren limbischen und paralimbischen Volumina bei den Individuen mit der L-Variante, einhergingen (Meyer-Lindenberg, Buckholtz et al. 2006). Diese Befunde könnten einen Beitrag zum Verständnis leisten, warum MAOA-L-Träger eine schlechtere Fähigkeit zur emotionalen Regulation zeigen
Erich Feldmeier

Douglas Hanahan: CiteULike: The Hallmarks of Cancer, Krebs - 0 views

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    "The SOS-Ras-Raf-MAPK cascade plays a central role here. In about 25% of human tumors, Ras proteins are present in structurally altered forms that enable them to release a flux of mitogenic signals into cells, without ongoing stimulation by their normal upstream regulators (Medema and Bos 1993). We suspect that growth signaling pathways suffer deregulation in all"
Pankaj Agrawal

India Telecom Regulation and India Telecom Towers - 1 views

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    Telecom Infrastructure -Tenancy is the lifeblood of the tower business, and is impacted by multiple factors such as operator spectrum choice (coverage tenancies)
thinkahol *

Science Friday Archives: Meditation and the Brain - 1 views

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    New research looks at the effects of studying a form of meditation on brain connectivity. Writing in the Proceedings of the National Academy of Science, researchers in China and the University of Oregon describe experiments on 45 students, some of whom were taught a meditation technique known as integrative body-mind training (IBMT). The researchers used brain imaging techniques to examine fibers connecting brain regions before and after training. Students trained in the IBMT approach for 11 hours or more appeared to develop new fibers in a part of the brain that helps a person regulate behavior. Control subjects did not form the new fibers. But what does the presence of those fibers actually mean -- and what is the meditation technique doing? We'll talk about it.
Walid Damouny

Scientists Discover Hunger's Timekeeper - 0 views

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    Researchers at Columbia and Rockefeller Universities have identified cells in the stomach that regulate the release of a hormone associated with appetite. The group is the first to show that these cells, which release a hormone called ghrelin, are controlled by a circadian clock that is set by mealtime patterns. The finding, published in Proceedings of the National Academy of Sciences, has implications for the treatment of obesity and is a landmark in the decades-long search for the timekeepers of hunger.
Charles Daney

Birth Control for Stars -- ScienceNOW - 0 views

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    New findings show that the giant clouds of dust and gas that pervade the universe, out of which form all of the stars and other assorted celestial bodies, depend on magnetism to regulate their collapse. If confirmed, the study would resolve a long-standing mystery about the star-forming process.
Walid Damouny

1 gene lost = 1 limb regained? Scientists demonstrate mammalian regeneration through si... - 1 views

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    "A quest that began over a decade ago with a chance observation has reached a milestone: the identification of a gene that may regulate regeneration in mammals. The absence of this single gene, called p21, confers a healing potential in mice long thought to have been lost through evolution and reserved for creatures like flatworms, sponges, and some species of salamander. In a report published today in the Proceedings of the National Academy of Sciences, researchers from The Wistar Institute demonstrate that mice that lack the p21 gene gain the ability to regenerate lost or damaged tissue."
Charles Daney

Neuroscience: Settling the great glia debate : Nature News - 0 views

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    For many years, neurons were thought to be alone in executing this task, and glia were consigned to a supporting role regulating a neuron's environment, helping it to grow, and even providing physical scaffolding (glia is Greek for 'glue'). In the past couple of decades, however, this picture has been changing.
thinkahol *

TEDxRheinMain - Prof. Dr. Thomas Metzinger - The Ego Tunnel - YouTube - 1 views

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    Brain, bodily awareness, and the emergence of a conscious self: these entities and their relations are explored by Germanphilosopher and cognitive scientist Metzinger. Extensively working with neuroscientists he has come to the conclusion that, in fact, there is no such thing as a "self" -- that a "self" is simply the content of a model created by our brain - part of a virtual reality we create for ourselves. But if the self is not "real," he asks, why and how did it evolve? How does the brain construct the self? In a series of fascinating virtual reality experiments, Metzinger and his colleagues have attempted to create so-called "out-of-body experiences" in the lab, in order to explore these questions. As a philosopher, he offers a discussion of many of the latest results in robotics, neuroscience, dream and meditation research, and argues that the brain is much more powerful than we have ever imagined. He shows us, for example, that we now have the first machines that have developed an inner image of their own body -- and actually use this model to create intelligent behavior. In addition, studies exploring the connections between phantom limbs and the brain have shown us that even people born without arms or legs sometimes experience a sensation that they do in fact have limbs that are not there. Experiments like the "rubber-hand illusion" demonstrate how we can experience a fake hand as part of our self and even feel a sensation of touch on the phantom hand form the basis and testing ground for the idea that what we have called the "self" in the past is just the content of a transparent self-model in our brains. Now, as new ways of manipulating the conscious mind-brain appear on the scene, it will soon become possible to alter our subjective reality in an unprecedented manner. The cultural consequences of this, Metzinger claims, may be immense: we will need a new approach to ethics, and we will be forced to think about ourselves in a fundamentally new way. At
anonymous

Pioneering Genetic Research With The Help Of Microbes - 0 views

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    Microbes are preferably suitable for joint biochemical as well as genetic research and studies and have been effective in providing evidence about the genetic code and the regulation of gene activity.
Skeptical Debunker

Belief In Climate Change Hinges On Worldview : NPR - 0 views

  • "People tend to conform their factual beliefs to ones that are consistent with their cultural outlook, their world view," Braman says. The Cultural Cognition Project has conducted several experiments to back that up. Participants in these experiments are asked to describe their cultural beliefs. Some embrace new technology, authority and free enterprise. They are labeled the "individualistic" group. Others are suspicious of authority or of commerce and industry. Braman calls them "communitarians." In one experiment, Braman queried these subjects about something unfamiliar to them: nanotechnology — new research into tiny, molecule-sized objects that could lead to novel products. "These two groups start to polarize as soon as you start to describe some of the potential benefits and harms," Braman says. The individualists tended to like nanotechnology. The communitarians generally viewed it as dangerous. Both groups made their decisions based on the same information. "It doesn't matter whether you show them negative or positive information, they reject the information that is contrary to what they would like to believe, and they glom onto the positive information," Braman says.
  • "Basically the reason that people react in a close-minded way to information is that the implications of it threaten their values," says Dan Kahan, a law professor at Yale University and a member of The Cultural Cognition Project. Kahan says people test new information against their preexisting view of how the world should work. "If the implication, the outcome, can affirm your values, you think about it in a much more open-minded way," he says. And if the information doesn't, you tend to reject it. In another experiment, people read a United Nations study about the dangers of global warming. Then the researchers told the participants that the solution to global warming is to regulate industrial pollution. Many in the individualistic group then rejected the climate science. But when more nuclear power was offered as the solution, says Braman, "they said, you know, it turns out global warming is a serious problem."And for the communitarians, climate danger seemed less serious if the only solution was more nuclear power.
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  • Then there's the "messenger" effect. In an experiment dealing with the dangers versus benefits of a vaccine, the scientific information came from several people. They ranged from a rumpled and bearded expert to a crisply business-like one. The participants tended to believe the message that came from the person they considered to be more like them. In relation to the climate change debate, this suggests that some people may not listen to those whom they view as hard-core environmentalists. "If you have people who are skeptical of the data on climate change," Braman says, "you can bet that Al Gore is not going to convince them at this point." So, should climate scientists hire, say, Newt Gingrich as their spokesman? Kahan says no. "The goal can't be to create a kind of psychological house of mirrors so that people end up seeing exactly what you want," he argues. "The goal has to be to create an environment that allows them to be open-minded."And Kahan says you can't do that just by publishing more scientific data.
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    "It's a hoax," said coal company CEO Don Blankenship, "because clearly anyone that says that they know what the temperature of the Earth is going to be in 2020 or 2030 needs to be put in an asylum because they don't." On the other side of the debate was environmentalist Robert Kennedy, Jr. "Ninety-eight percent of the research climatologists in the world say that global warming is real, that its impacts are going to be catastrophic," he argued. "There are 2 percent who disagree with that. I have a choice of believing the 98 percent or the 2 percent." To social scientist and lawyer Don Braman, it's not surprising that two people can disagree so strongly over science. Braman is on the faculty at George Washington University and part of The Cultural Cognition Project, a group of scholars who study how cultural values shape public perceptions and policy
anonymous

Ginseng And Its Immense Health Benefits - 1 views

Since the days of herbal medicines, ginseng was used as an antidote for various medical conditions. History tells us that Asia and North America were the leading regions were ginseng has huge popul...

how to grow ginseng scientific research Mahendra reviews trivedi science foundation

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