Quickly gain a reputation by helping other students with their questions. When students see your nickname, they'll immediately associate your answer with credibility and expertise. Also, earn credits for sharing your knowledge and redeem them for rewards.
The ongoing creation of Web 2.0 has transformed the average internet denizen into a strange hybrid of producer and consumer. Everyone is now a ‘prosumer‘, and this new role is apparently very addictive. Social media pushes its users into states of continued stimulus and communication, with a system that rewards obsessively-frequent checking and updating. Enterprising sci
A mystery that puzzled Chicago-area birders was solved when Field Museum scientists identified the unusual hummingbird living in an Oak Park, Ill., yard as a member of the rufous species rarely seen in the Midwest.
Josh Engel, a staff scientist at the Field Museum in Chicago, said he and Vernon Kleen, a hummingbird bander from Springfield, Ill., recently visited th
Promiscuous mating produces offspring with higher lifetime fitness
In many species, each female pairs with a single male for the purpose of rearing offspring, but may also engage in extra-pair copulations. Despite the prevalence of such promiscuity, whether and how multiple mating benefits females remains an open question. Multiple mating is typically thought to be favoured primarily through indirect benefits (i.e. heritable effects on the fitness
From Petman to Dexter, Bipedal Humanoid Robots Come of Age
Whoa! I am totally blown away by the just released video of Boston Dynamics’ Petman bipedal humanoid robot (check it out later in this post). Bipedal humanoid robots have been in earnest development for the last decade, and there are several pretty solid success stories out there already. But now Boston Dynamics, maker of the famous Big Dog robot, has jumped
Look out cute and cuddly Nao. Get out of the way ever-attentive Asimo, a new robot’s on the march and he can smash both of you and your girly-man voices with his pinky – if he had a pinky, that is, or even hands for that matter. The Terminator-looking PETMAN even has a red light to stare down its soon-to-be roadkill. As it walks, it carries its six-foot, 180 pound frame with an impo
Ivan Stoiljkovic may be six years old, but he's already developing the flair of a performer, whipping off his shirt at a moment's notice to display an unusual talent: Ivan appears to attract metal with his chest.
Eight-year-old Virginia O'Hanlon wrote a letter to the editor of New York's Sun, and the quick response was printed as an unsigned editorial Sept. 21, 1897. The work of veteran newsman Francis Pharcellus Church has since become history's most reprinted newspaper editorial, appearing in part or whole in dozens of languages in books, movies, and other editor
It's nice to know that as humanity continues its conquest of space, Santa's naughty or nice list will still include those serving on orbiting space stations. It's just too bad that this might be his last delivery—ever.
Created by the Minneapolis-based post-production company Splice as th
HIV prevention research named scientific breakthrough of the year by Science
The HIV Prevention Trials Network 052 study, led by Myron S. Cohen, M.D. of the University of North Carolina at Chapel Hill, has been named the 2011 Breakthrough of the Year by the journal Science.
Neuroscientists identify a master controller of memory
Yingxi Lin, a member of the McGovern Institute for Brain Research and the the Frederick and Carole Middleton Career Development Assistant Professor of Brain and Cognitive Sciences.
When you experience a new event, your brain encodes a memory of it by altering the co
A 40-year-old puzzle of superstring theory solved by supercomputer
A group of three researchers from KEK, Shizuoka University and Osaka University has for the first time revealed the way our universe was born with 3 spatial dimensions from 10-dimensional superstring theory in which spacetime has 9 spatial directions and 1 temporal direction. This result was obtained by numerical simulation on a supercomputer.
US authorities have asked the authors of two controversial bird flu studies to redact key details after a government advisory panel suggested the data could be used by terrorists.
H5N1, also known as bird flu, is normally transmitted through bird to
Targeted immune stimulation based on DNA nanotechnology
DNA is usually known as the genetic code for protein synthesis in all living organisms. The application of DNA as a molecular building block on the other hand, allows for the construction of sophisticated nanoscopic shapes that are built entirely from DNA. In particular the recent invention of the so-called DNA origami method facilitates the fabrication of almost all imaginable 3D s
Why is the U.S. government trying to control the contents of scientific journals
One of the most important duties of a peer-reviewed research journal is to not only feature discoveries at the frontiers of science, but to provide other researchers with the information necessary to build upon said discoveries in a meaningful way. Now, the
One of the most difficult forms of cancer to cure is a type of leukemia known as chronic myelogenous leukemia. While current treatments can keep it at bay, the cancer's drug-resistant stem cells mean a relapse is potentially always imminent.
Breakthrough: A new drug that could cure everything from colds to HIV
Our most powerful antibiotics can kill many different kinds of bacterial infections at once, but we're still searching for a single all-purpose drug that kills viruses. We may have just discovered it.
Massive 1,100+ year old Maya site discovered in Georgia's mountains
Archaeological zone 9UN367 at Track Rock Gap, near Georgia’s highest mountain, Brasstown Bald, is a half mile (800 m) square and rises 700 feet (213 m) in elevation up a steep mountainside. Visible are at least 154 stone masonry walls for agricultural terraces, plus evidence of a sophisticated irrigation system and ruins of several other stone structures. Much more may be h
Fast-food chains have seen the writing on the wall with regard to trans-fatty acids and have significantly reduced their use in cooking, according to the results of a new study. McDonald's, Burger King, Wendy's, Jack in the Box, and Dairy Queen all reduced the use of trans fat to "close to zero" without increasing their use of saturated fats, report researchers.
Chicken eggs are high in cholesterol, and a diet high in cholesterol can contribute to high blood cholesterol levels. However, how much the cholesterol in your diet can increase your blood cholesterol varies from person to person.
When deciding whether to include eggs in your diet, consider the recommended daily limits on cholesterol in your food:
Researchers figure out how to outperform nature's photosynthesis
The Proceedings of the National Academy of Sciences (PNAS) last week published a paper titled "Solar hydrogen-producing bionanodevice outperforms natural photosynthesis." The authors are Carolyn E. Lubner, Amanda M. Applegate, Philipp Knörzerb, Alexander Ganagoc, Donald A. Bryantc, Thomas Happe and John H. Golbeck. They modified the photosynthetic proteins f
Terms I Need to Know: • Adenocarcinoma: cancer that arises from grandular tissue. • Alopecia: hair loss • Anaplasia: usually malignant, cells lack normal cellular characteristics and differ in shape and organization. • Anemia: secondary to disease/ treatment greatly increases the clients risk for hypoxemia. • Apoptosis: programmed cell death • Ben
Heart Healthy Living The key to heart healthy living is a nutritious diet and regular exercise.
Fact Sheet • What you can’t change: gender and family history. • What you can change: obesity, inactivity, stress, smoking and diet. • LDL- low density lipoprotein- think lousy/ bad, causes plaque and atherosclerosis • HDL- High density lipoprotein- th
Assessment of Chest Pain: From Chart on page 692 Location CM Agg. Factors alleviating factors notes Angina Pectoris/ Acute Coronary Syndrome Angina= Pressure or fullnesss in the substernal area which can radiate across the chest to the medial aspect of one or both arms (numbness or tingling). ACS= same as above in addition
give products of D-mannitol reacted with benzoyl chloride then HIO4
When D-mannitol is reacted with excess benzoyl chloride a small quantity of a tribenzoyl compound is obtained. Oxidation of this compound with HIO4 yields formic acid but no formaldehyde. Write equations describing these reactions and identify the structure and stereochemistry of the products other than formic acid.
I'm so glad that I found this site!!! I do a lot of the work myself but often question myself so I appreciate this site for the hard work that they put into helping people like me!!! :hey:See ya around!!!!
RNA interference (RNAi) is an important process, used by many different organisms to regulate the activity of genes. This animation explains how RNAi works and introduces the two main players: small interfering RNAs (siRNAs) and microRNAs (miRNAs). We take you on an audi
Researchers demonstrate new DNA detection technique
A team of researchers from the University of Notre Dame have demonstrated a novel DNA detection method that could prove suitable for many real-world applications.
Physicists Carol Tanner and Steven Ruggiero led the team in the application of a new technique called laser transmission spectroscopy (LTS). LTS is capable of rapidly determining the size, sha
