Arid areas are among the biggest (non-ocean) ecosystems we have and it turns out they take up higher levels of carbon as levels of carbon dioxide increase in the atmosphere.
The findings give scientists a better idea of the earth's "carbon budget" — how much carbon remains in the atmosphere as CO2 and is a concern for global warming and how much actually gets stored in the land or ocean in other carbon-containing forms.
Lindsay says that around 50 distinct signal burst characteristics were used in the amino acid identifications, but that most of the discriminatory power is achieved with 10 or fewer signal traits.
Remarkably, recognition tunneling not only pinpointed amino acids with high reliability from single complex burst signals, but managed to distinguish a post-translationally modified protein (sarcosine) from its unmodified precursor (glycine) and also to discriminate between mirror-image molecules knows as enantiomers and so-called isobaric molecules, which differ in peptide sequence but exhibit identical masses.
Pathway to the $1000 dollar proteome?
The transfer, via a viral vector, of a normal copy of the gene deficient in patients, allowed to fully and very rapidly cure the heart disease in mice. These findings are published in Nature Medicine on 6 April, 2014.
PROVIDENCE, R.I. [Brown University] — The surface of Mercury crackled with volcanic explosions for extended periods of the planet's history, according to a new analysis led by researchers at Brown University. The findings are surprising considering Mercury wasn't supposed to have explosive volcanism in the first place, and they could have implications for understanding how Mercury formed.
Despite high rates of contraceptive use, unwanted pregnancies resulting in terminations remain high among young women.
In an article in the April issue of the Australian and New Zealand Journal of Public Health, Danielle Mazza from Monash University, and colleagues, examine the paradox of high rates of contraceptive use, over the counter availability of emergency contraception and unplanned pregnancy.
"The emergency contraceptive pill has been available to women for over-the-counter purchase since 2004," Professor Mazza said.
"Together with high rates of contraceptive use, this should result in lower rates of unplanned pregnancies for Australian women, but it has not.
BUFFALO, N.Y. – Chemotherapeutic drugs excel at fighting cancer, but they're not so efficient at getting where they need to go.
They often interact with blood, bone marrow and other healthy bodily systems.
A team of researchers from the Center for Imaging Science at the Johns Hopkins University and the CMLA of the École Normale Supérieure Cachan have demonstrated new algorithmic technologies for the parametric representation of human shape and form. Coupled with advanced imaging technologies, this presents opportunities for tracking soft-tissue deformations associated with cardiovascular studies, radiation treatment planning in Oncology, and neurodegenerative brain illnesses.
CAMBRIDGE, Mass-- The electrochemical reactions inside the porous electrodes of batteries and fuel cells have been described by theorists, but never measured directly. Now, a team at MIT has figured out a way to measure the fundamental charge transfer rate — finding some significant surprises.
The study found that the Butler-Volmer (BV) equation, usually used to describe reaction rates in electrodes, is inaccurate, especially at higher voltage levels. Instead, a different approach, called Marcus-Hush-Chidsey charge-transfer theory, provides more realistic results — revealing that the limiting step of these reactions is not what had been thought.
Scientific uncertainly prevents definitive solutions (beyond putting a stop to the world and leaving poor people to a future with no food, water or air conditioning) but the stance that the issue is settled, even when solutions may not be effective, also leads to public mistrust and name-calling.
But that uncertainty should actually make us more rather than less concerned about climate change, according to two papers in Climatic Change which investigated the mathematics of uncertainty in the climate system and showed that increased scientific uncertainty necessitates even greater action to mitigate climate change.
PHILADELPHIA—(April 4, 2014)— Colorectal cancer develops in what is probably the most complex environment in the human body, a place where human cells cohabitate with a colony of approximately 10 trillion bacteria, most of which are unknown. At the 2014 American Association for Cancer Research Annual Meeting in San Diego, researchers from The Wistar Institute will present findings that suggest the colon "microbiome" of gut bacteria can change the tumor microenvironment in a way that promotes the growth and spread of tumors.
A University of Colorado Cancer Center study published today in Journal of the National Cancer Institute (with related research being presented this weekend at the American Association for Cancer Research Annual Conference 2014) details the discovery of a new genetic driver of bladder cancer: silencing of the gene AGL.
"We tend to think of cancer resulting from mutations that let genes make things they shouldn't or turn on when they should be quiet. But cancer can also result from loss of gene function. Some genes suppress cancer. When you turn off these suppressors, cancer grows," says Dan Theodorescu, MD, PhD, director of the University of Colorado Cancer Center and the study's senior author.
The scientific world is one step closer to understanding how nature uses carbon-capture to tame poisons, thanks to a recent discovery of cyanoformate by researchers at Saint Mary's University (Halifax, Canada) and the University of Jyväskylä (Finland). This simple ion — which is formed when cyanide bonds to carbon dioxide — is a by-product of the fruit-ripening process that has evaded detection for decades.
Chemists have long understood the roles presence of cyanide (CN−) and carbon dioxide (CO2) in fruit ripening, but have always observed them independently. This is the first time scientists have isolated the elusive cyanoformate anion (NCCO2−) and characterized its structure using crystallography and computational chemistry.
HOUSTON -- Under stress from chemotherapy or radiation, some cancer cells dodge death by consuming a bit of themselves, allowing them to essentially sleep through treatment and later awaken as tougher, resistant disease.
Interfering with a single cancer-promoting protein and its receptor can turn this resistance mechanism into lethal, runaway self-cannibalization, researchers at The University of Texas MD Anderson Cancer Center report in the journal Cell Reports.