Heterobiaryl synthesis by contractive C-C coupling via P(V) intermediates
We present an alternative approach to metal-catalyzed cross-coupling to make heterobiaryls using contractive phosphorus C–C couplings, also termed phosphorus ligand coupling reactions. The process starts by regioselective phosphorus substitution of the C–H bonds para to nitrogen in two successive heterocycles; ligand coupling is then triggered via acidic alcohol solutions to form the heterobiaryl bond. Mechanistic studies imply that ligand coupling is an asynchronous process involving migration of one heterocycle to the ipso position of the other around a central pentacoordinate P(V) atom. The strategy can be a...
Source: ScienceNOW - November 15, 2018 Category: Science Authors: Hilton, M. C., Zhang, X., Boyle, B. T., Alegre-Requena, J. V., Paton, R. S., McNally, A. Tags: Chemistry r-articles Source Type: news
Soil's history: A solution to soluble phosphorus?
(American Society of Agronomy) New research suggests that, over time, less phosphorus fertilizer may be necessary on agricultural fields. (Source: EurekAlert! - Biology)
Source: EurekAlert! - Biology - November 14, 2018 Category: Biology Source Type: news
Low-phosphorus diet: Helpful for kidney disease?
(Source: MayoClinic.com - Ask a Specialist)
Source: MayoClinic.com - Ask a Specialist - October 31, 2018 Category: Consumer Health News Source Type: news
Are Sunflower Seeds Healthy? Here ’s What Experts Say
Certain seeds, like chia and flax, tend to hog the nutritional spotlight. But the less-trendy sunflower seed has plenty of qualities worth highlighting. Here are the health benefits of sunflowers seeds, according to dietitians. Are sunflower seeds healthy? Sunflower seeds are rich in nutrients. One serving of shelled sunflower seeds is usually an ounce, which is about 1/4 cup or 4 tablespoons (one to two thumb-sized portions.) They’re particularly high in healthy fat: A serving delivers 14 grams of fat with a mix of monounsaturated and polyunsaturated fats. “The mono- and polyunsaturated fats in sunflower seed...
Source: TIME: Health - October 17, 2018 Category: Consumer Health News Authors: Cassie Shortsleeve Tags: Uncategorized Diet/Nutrition Source Type: news
NSF awards $15 million to understand how people can better interact with the environment
A toxic red tide, or harmful algae bloom, is killing swaths of marine life and affecting the health of people living along Florida's southwest coast. Nationwide, harmful algae blooms cost an estimated $50 million each year. Excess nutrients such as nitrogen and phosphorus flowing downstream act as fertilizer, sparking these blooms in waterbodies such as the Gulf of Mexico, Lake Erie and Chesapeake Bay. Paul Leisnham of the University of Maryland, College Park, is working to find out ... More at https://www.nsf.gov/news/news_summ.jsp?cntn_id=296562&WT.mc_id=USNSF_51&WT.mc_ev=click This is an NSF News item. (Source: NSF News)
Source: NSF News - September 24, 2018 Category: Science Source Type: news
Are Pistachios Healthy? Here ’s What Experts Say
You can find the shelled green nuts everywhere, from airport kiosks to health food stores. But are pistachios as healthy as they’re cracked up to be? Here’s what the experts say. What are the nutrition facts of pistachios? Pistachios are packed with vitamins, minerals and nutrients, including beta carotene, phosphorus, vitamin B6, thiamine, potassium, magnesium and fiber. Compared to other nuts, they are also high in carotenoids, a type of antioxidant that helps reduce the risk of chronic disease and improves heart health, says registered dietitian Kristin Kirkpatrick. You can also eat a lot of them in just one...
Source: TIME: Health - September 20, 2018 Category: Consumer Health News Authors: Cassie Shortsleeve Tags: Uncategorized Diet/Nutrition healthytime Source Type: news
Unlocking P(V): Reagents for chiral phosphorothioate synthesis
Phosphorothioate nucleotides have emerged as powerful pharmacological substitutes of their native phosphodiester analogs with important translational applications in antisense oligonucleotide (ASO) therapeutics and cyclic dinucleotide (CDN) synthesis. Stereocontrolled installation of this chiral motif has long been hampered by the systemic use of phosphorus(III) [P(III)]–based reagent systems as the sole practical means of oligonucleotide assembly. A fundamentally different approach is described herein: the invention of a P(V)-based reagent platform for programmable, traceless, diastereoselective phosphorus-sulfur in...
Source: ScienceNOW - September 20, 2018 Category: Science Authors: Knouse, K. W., deGruyter, J. N., Schmidt, M. A., Zheng, B., Vantourout, J. C., Kingston, C., Mercer, S. E., Mcdonald, I. M., Olson, R. E., Zhu, Y., Hang, C., Zhu, J., Yuan, C., Wang, Q., Park, P., Eastgate, M. D., Baran, P. S. Tags: Chemistry reports Source Type: news
Flame-retardant and smoke-suppressant flexible polyurethane foams based on reactive phosphorus-containing polyol and expandable graphite - Rao WH, Liao W, Wang H, Zhao HB, Wang YZ.
In this manuscript, flame-retardant and smoke-suppressant flexible polyurethane foams (FPUFs) were designed and synthesized based on novel liquid phosphorus-containing polyol named as PDEO and expandable graphite (EG). The reactive PDEO can be chemically a... (Source: SafetyLit)
Source: SafetyLit - August 30, 2018 Category: International Medicine & Public Health Tags: Burns, Electricity, Explosions, Fire, Scalds Source Type: news
Soil phosphorus availability and lime: More than just pH?
(American Society of Agronomy) Plants can't do without phosphorus. But there is often a 'withdrawal limit' on how much phosphorus they can get from the soil. A new study looks at how liming, soil management history and enzymes relate to plants' access to phosphorus. (Source: EurekAlert! - Biology)
Source: EurekAlert! - Biology - August 1, 2018 Category: Biology Source Type: news
Coffee plants grow better without chemicals; healthy soil has microbes and fungi that nourish plants and act as biofertilizers
(Natural News) A recent Mexican study suggested that coffee plants and other crops can flourish even without chemical fertilizers. All they need is healthy soil with the right combination of native fungi that act as biofertilizers, increasing the amount of phosphorus in the soil and the plant’s rate of absorption. The researchers identified two particular groups of fungi... (Source: NaturalNews.com)
Source: NaturalNews.com - June 12, 2018 Category: Consumer Health News Source Type: news
Early Use of Burosumab Eases XLH Symptoms in Kids
(MedPage Today) -- Treatment improved rickets severity, serum phosphorus, and calcitriol levels (Source: MedPage Today Endocrinology)
Source: MedPage Today Endocrinology - May 20, 2018 Category: Endocrinology Source Type: news
Genetic data shed light on how soil microbes survive nutrient-deficient environments
(Natural News) For the longest time, researchers have puzzled over the process that allows microbes to grow within the phosphorus-poor soil found in tropical rainforests. A recent study of their genetic data revealed that these microbes possess a higher amount of genes that specialize in getting the vital mineral, according to a NewsWise article. Tropical... (Source: NaturalNews.com)
Source: NaturalNews.com - April 30, 2018 Category: Consumer Health News Source Type: news
Research brief: Freshwater ecosystems filter pollutants before they reach oceans
(University of Minnesota) By adding excess nutrients to crops, some are very likely to end up in rivers, lakes and streams. But not all of the carbon, nitrogen and phosphorus that enter waterways end up downstream. Freshwater ecosystems filter some of the excess pollutants out of the water before it reaches the ocean, according to a new study. (Source: EurekAlert! - Biology)
Source: EurekAlert! - Biology - April 30, 2018 Category: Biology Source Type: news
FDA approves first therapy for rare inherited form of rickets, x-linked hypophosphatemia
The U.S. Food and Drug Administration has approved Crysvita (burosumab-twza), the first drug approved to treat adults and children ages 1 year and older with x-linked hypophosphatemia (XLH), a rare, inherited form of rickets. XLH causes low levels of phosphorus in the blood. It leads to impaired bone growth and development in children and adolescents and problems with bone mineralization throughout a patient's life. (Source: World Pharma News)
Source: World Pharma News - April 19, 2018 Category: Pharmaceuticals Tags: Featured FDA Regulatory Affairs Source Type: news
New Penn State-USDA patented technology removes phosphorus from manure
(Penn State) An innovation that could have a huge impact on water quality problems in the United States, a system capable of removing almost all phosphorus from stored livestock manure, was developed by a team of researchers from Penn State and the US Department of Agriculture's Agricultural Research Service. (Source: EurekAlert! - Biology)
Source: EurekAlert! - Biology - April 9, 2018 Category: Biology Source Type: news
Pee and pesticides: Thoreau's Walden Pond in trouble, warn scientists
Immortalised for its beauty by Henry David Thoreau, the Massachusetts pond is under threat from increased human activity and climate change according to a new studyThe water of Walden Pond, which Henry David Thoreau described in 1854 as “so transparent that the bottom can easily be discerned at the depth of 25 or 30 feet”, is no longer quite so clear according to a new study.The Massachusetts pond was made famous in Walden, the transcendentalist writer ’s account of the years he spent next to it in order to “live so sturdily and Spartan-like as to put to rout all that was not life”. The pond h...
Source: Guardian Unlimited Science - April 6, 2018 Category: Science Authors: Alison Flood Tags: Henry David Thoreau Books Culture Environment Climate change Science Massachusetts US news Science and nature Water Source Type: news
Phosphoric acid as a precursor to chemicals traditionally synthesized from white phosphorus
White phosphorus, generated in the legacy thermal process for phosphate rock upgrading, has long been the key industrial intermediate for the synthesis of phosphorus-containing chemicals, including herbicides, flame-retardants, catalyst ligands, battery electrolytes, pharmaceuticals, and detergents. In contrast, phosphate fertilizers are made on a much larger scale from phosphoric acid, obtained by treating phosphate rock with sulfuric acid. Dehydration of phosphoric acid using sodium chloride gives trimetaphosphate, and here we report that trichlorosilane, primarily used for the production of high-purity silicon, reduces ...
Source: ScienceNOW - March 22, 2018 Category: Science Authors: Geeson, M. B., Cummins, C. C. Tags: Chemistry reports Source Type: news
Ingestion of fireworks: rare cause of poisoning in children - Yuksekkaya H, Gumus M, Yucel A, Energin M, Demirci S.
BACKGROUND: Mistaken ingestion of all manner of toxic matter is common in childhood, but poisoning with fireworks and matchsticks is rare. Fireworks usually contain 10% yellow phosphorus and 50% potassium chlorate. Potassium chlorate is an extremely reacti... (Source: SafetyLit)
Source: SafetyLit - March 19, 2018 Category: International Medicine & Public Health Tags: Age: Infants and Children Source Type: news
Australian scientists move closer to world-beating quantum computer
Led by Australian of the year Michelle Simmons, team has built qubits from single phosphorus atoms in siliconAustralian scientists, led byAustralian of the year Michelle Simmons, have made a significant step in creating a world-beating, single-atom quantum computer.Simmons and her Australian teamannounced on Wednesday they had built quantum bits, known as qubits, from single phosphorus atoms in silicon, that could communicate and correlate with each other.Continue reading... (Source: Guardian Unlimited Science)
Source: Guardian Unlimited Science - March 8, 2018 Category: Science Authors: Naaman Zhou Tags: Computing Science Technology Google Source Type: news
Diverse tropical forests grow fast despite widespread phosphorus limitation
(Smithsonian Tropical Research Institute) Ecological theory says that poor soils limit the productivity of tropical forests, but adding nutrients as fertilizer rarely increases tree growth, suggesting that productivity is not limited by nutrients after all. Researchers at the Smithsonian Tropical Research Institute (STRI) resolved this apparent contradiction, showing that phosphorus limits the growth of individual tree species but not entire forest communities. Their results, published online in Nature, March 8, have sweeping implications for understanding forest growth and change. (Source: EurekAlert! - Medicine and Health)
Source: EurekAlert! - Medicine and Health - March 7, 2018 Category: International Medicine & Public Health Source Type: news
The 6 Best Snacks for Anyone Cutting Out Sugar, According to a Nutritionist
This article originally appeared on Health.com (Source: TIME: Health)
Source: TIME: Health - February 28, 2018 Category: Consumer Health News Authors: Cynthia Sass, MPH, RD Tags: Uncategorized Food Healthy Eating onetime Source Type: news
Phosphorus from fertilizer runoff is polluting freshwater sources all over the world
(Natural News) A recent study published in the journal Water Resources Research revealed that phosphorus pollution as a result of human activities appeared to have seeped into Earth’s freshwater bodies in the past few years. Scientists explained that phosphorus is a common component of mineral and manure fertilizers due to its efficacy in increasing crop yield. However, the... (Source: NaturalNews.com)
Source: NaturalNews.com - February 8, 2018 Category: Consumer Health News Source Type: news
Phosphorus pollution reaching dangerous levels worldwide, new study finds
(American Geophysical Union) Man-made phosphorus pollution is reaching dangerously high levels in freshwater basins around the world, according to new research. (Source: EurekAlert! - Medicine and Health)
Source: EurekAlert! - Medicine and Health - January 25, 2018 Category: International Medicine & Public Health Source Type: news
Researchers reveal how microbes cope in phosphorus-deficient tropical soil
(DOE/Oak Ridge National Laboratory) A team led by the Department of Energy's Oak Ridge National Laboratory has uncovered how certain soil microbes cope in a phosphorus-poor environment to survive in a tropical ecosystem. Their novel approach could be applied in other ecosystems to study various nutrient limitations and inform agriculture and terrestrial biosphere modeling. (Source: EurekAlert! - Biology)
Source: EurekAlert! - Biology - January 22, 2018 Category: Biology Source Type: news
Study may improve strategies for reducing nutrient runoff into Mississippi River
(University of Illinois College of Agricultural, Consumer and Environmental Sciences) Every summer, the Gulf of Mexico is flooded with excess nitrogen and phosphorus from wastewater treatment plants and farm fields along the Mississippi River basin. And every summer, those nutrients create a 'dead zone' in the Gulf. To address the issue, the US Environmental Protection Agency formed a task force and required 12 states to develop strategies to reduce agricultural runoff. (Source: EurekAlert! - Medicine and Health)
Source: EurekAlert! - Medicine and Health - January 22, 2018 Category: International Medicine & Public Health Source Type: news
Reducing how much nitrogen enters a lake has little impact on algal blooms
(IISD Experimental Lakes Area) Lakes suffering from harmful algal blooms may not respond to reduced, or even discontinued, artificial nitrogen loading. Many blue-green algae responsible for algal blooms can fix atmospheric nitrogen dissolved in the water, and therefore water stewards should focus their efforts on removing phosphorus from lakes to combat algal blooms. (Source: EurekAlert! - Medicine and Health)
Source: EurekAlert! - Medicine and Health - December 18, 2017 Category: International Medicine & Public Health Source Type: news
Study: Too many nutrients make microbes less responsive
(University of Minnesota) Bacteria in lakes play a key role in maintaining water quality by absorbing excess nitrogen and phosphorus. They also help store carbon, which has implications for our climate. But, as it turns out, their ability to do these tasks varies depending on the makeup of the lake in which they live, according to a new study by University of Minnesota researchers that was funded by the National Science Foundation. In short, location matters most. (Source: EurekAlert! - Biology)
Source: EurekAlert! - Biology - December 11, 2017 Category: Biology Source Type: news
Structural basis for methylphosphonate biosynthesis
Methylphosphonate synthase (MPnS) produces methylphosphonate, a metabolic precursor to methane in the upper ocean. Here, we determine a 2.35-angstrom resolution structure of MPnS and discover that it has an unusual 2-histidine-1-glutamine iron-coordinating triad. We further solve the structure of a related enzyme, hydroxyethylphosphonate dioxygenase from Streptomyces albus (SaHEPD), and find that it displays the same motif. SaHEPD can be converted into an MPnS by mutation of glutamine-adjacent residues, identifying the molecular requirements for methylphosphonate synthesis. Using these sequence markers, we find numerous pu...
Source: ScienceNOW - December 7, 2017 Category: Science Authors: Born, D. A., Ulrich, E. C., Ju, K.-S., Peck, S. C., van der Donk, W. A., Drennan, C. L. Tags: Biochemistry reports Source Type: news
Is Digital Health Making an Impact on Healthcare?
Mobile health (mHealth) apps and telemedicine have the potential to lower costs and improve patient care by allowing closer collaboration between patients and healthcare providers. The increasing adoption of health apps and other tools means not only healthier, more informed patients, but a more robust market: mHealth technology is expected to grow to $60 billion in 2020—an increase of 33%. Is digital health the panacea it's made out to be, or are we just generating data for data's sake? Deneen Vojta, executive vice president of research and development for UnitedHealth Group, said it's too soon to say. "Digital...
Source: MDDI - November 29, 2017 Category: Medical Devices Authors: Heather R. Johnson Tags: MD & M West (Anaheim) Digital Health Source Type: news
Reducing phosphorus runoff
(University of Delaware) Researchers test a variety of incentives to learn how best to motivate farmers to curb phosphorus runoff. (Source: EurekAlert! - Biology)
Source: EurekAlert! - Biology - November 22, 2017 Category: Biology Source Type: news
Russia starts production of orthophosphoric acid based on phosphorus-32
(Tomsk Polytechnic University) Tomsk Polytechnic University commissioned the Russia's only production of orthophosphoric acid based on phosphorus-32 which is used for biochemical study, diagnostics and therapy of cancer diseases. Prior to its launch in Tomsk, Russian consumers, particularly scientific research and medical centers, were forced to purchase the radiopharmaceutical abroad. The capacity of the entire production line is approximately 100 gigabecquerels per month. (Source: EurekAlert! - Cancer)
Source: EurekAlert! - Cancer - November 3, 2017 Category: Cancer & Oncology Source Type: news
'The Devil's element': the dark side of phosphorus
It glows and burns and is associated with glowing skulls, graveyard ghosts and spontaneous human combustion – not to mention painful and fatal illnessI would like to tell you aboutphosphorus, my favourite element in the periodic table. Phosphorus is an excellent candidate for a poison blog as there are a surprising number of ways it can kill you. It is also the most appropriate element for a Hallowe ’en blog as it is easily the spookiest member of the periodic table and associated with stories of alchemists, glowing skulls, graveyard ghosts andspontaneous human combustion.Phosphorus is an essential part of life...
Source: Guardian Unlimited Science - October 31, 2017 Category: Science Authors: Kathryn Harkup Tags: Science Chemistry Source Type: news
An analytical method to identify traces of white phosphorus on burned victim clothes - Muller D, Avissar YY, Kimchi S, Grafit A.
We report for the first time, the chemical identification of phosphorus on the remains of burned clothes taken from an injured woman. The woman was accidentally burned as a result of spontaneous combustion of a "stone" pebble-like material her daughter pic... (Source: SafetyLit)
Source: SafetyLit - October 30, 2017 Category: International Medicine & Public Health Tags: Burns, Electricity, Explosions, Fire, Scalds Source Type: news
This diet advice could kill you
The American Heart Association says sodium in salt raises blood pressure. They say it increases the risk for heart disease and stroke. But the latest science says otherwise… A British review of 34 clinical trials showed that cutting down on salt reduced blood pressure only slightly for people with hypertension.1 And a new study in The Lancet found that some low-salt diets could put you at GREATER risk of heart disease and death.2 Researchers analyzed data from 133,118 people. They wanted to see if there was a link between high sodium and heart attack, stroke and death The results were startling. People...
Source: Al Sears, MD Natural Remedies - October 5, 2017 Category: Complementary Medicine Authors: Randall Hall Tags: Health Heart Health Men's Health Nutrition Women's Health Source Type: news
Serum Phosphorus Levels and Fracture After Renal Transplant Serum Phosphorus Levels and Fracture After Renal Transplant
Are low serum phosphorus levels associated with increased fracture risk among renal transplant recipients?Clinical Endocrinology (Source: Medscape Transplantation Headlines)
Source: Medscape Transplantation Headlines - September 28, 2017 Category: Transplant Surgery Tags: Diabetes & Endocrinology Journal Article Source Type: news
FDA taps Apple, J & J and others for health software pre-cert pilot
The FDA yesterday named the nine companies that will be included in a pilot program to pre-certify healthcare software developers. The program was designed with the hopes of reducing the amount of information the regulatory watchdog requires for review. The companies include Apple (NSDQ:AAPL), Fitbit (NYSE:FIT), Johnson & Johnson (NYSE:JNJ), Pear Therapeutics, Phosphorus, Roche (OTC:RHHBY), Samsung, Tidepool and Verily. The program represents a shift for the agency, focusing on the developer instead of the product. “Our method for regulating digital health products must recognize the unique an...
Source: Mass Device - September 27, 2017 Category: Medical Devices Authors: Sarah Faulkner Tags: Food & Drug Administration (FDA) Regulatory/Compliance Wall Street Beat Apple Fitbit johnsonandjohnson peartherapeutics phosphorus Roche samsung Tidepool Verily Source Type: news
Apple, Samsung, and Other Big Names in Tech Chosen for FDA ’s PreCert Pilot
FDA Commissioner Scott Gottlieb, MD told an audience Tuesday that nine firms—major tech companies among them—will take part in the new FDA Software Precertification (PreCert) Pilot Program. The companies were a select few plucked from a field of more than 100 applicants, and they have star power. Apple, Verily, Samsung, and Fitbit are just some of the well-known names. Other participants are Johnson & Johnson, Roche, New York’s Phosphorus, Palo Alto-based Tidepool, and Pear Therapeutics from Boston. “Our team will be spending the rest of the year working closely with these companies to deepen ou...
Source: MDDI - September 26, 2017 Category: Medical Devices Authors: Marie Thibault Tags: Digital Health Source Type: news
A plant-based reactive ammonium phytate for use as a flame-retardant for cotton fabric - Feng Y, Zhou Y, Li D, He S, Zhang F, Zhang G.
A plant-based non-formaldehyde flame retardant containing high phosphorus ammonium phytate (APA) was synthesized for cotton fabric. The char length of treated cotton sample decreased to 31mm from the original 300mm. The LOI value of finished cotton fabric ... (Source: SafetyLit)
Source: SafetyLit - September 22, 2017 Category: International Medicine & Public Health Tags: Burns, Electricity, Explosions, Fire, Scalds Source Type: news
Titanium isotopic evidence for felsic crust and plate tectonics 3.5 billion years ago
Earth exhibits a dichotomy in elevation and chemical composition between the continents and ocean floor. Reconstructing when this dichotomy arose is important for understanding when plate tectonics started and how the supply of nutrients to the oceans changed through time. We measured the titanium isotopic composition of shales to constrain the chemical composition of the continental crust exposed to weathering and found that shales of all ages have a uniform isotopic composition. This can only be explained if the emerged crust was predominantly felsic (silica-rich) since 3.5 billion years ago, requiring an early initiatio...
Source: ScienceNOW - September 21, 2017 Category: Science Authors: Greber, N. D., Dauphas, N., Bekker, A., Ptacek, M. P., Bindeman, I. N., Hofmann, A. Tags: Geochemistry, Geophysics reports Source Type: news
The burning issue of white phosphorus: a case report and review of the literature - Aviv U, Kornhaber R, Harats M, Haik J.
BACKGROUND: Burns from white phosphorus are rare and remain a challenge for clinicians. White phosphorus burns are often associated with smaller surface areas and high morbidity rates. Classed as a chemical burn, white phosphorus is used for military purpo... (Source: SafetyLit)
Source: SafetyLit - September 5, 2017 Category: International Medicine & Public Health Tags: Burns, Electricity, Explosions, Fire, Scalds Source Type: news
Scientists from the MSU adjusted a microalgal technology for wast
(Lomonosov Moscow State University) Members of the Faculty of Biology of the Lomonosov Moscow State University proved that under Nordic conditions wastewaters could be treated with the help of microalgae, while algal biomass is suitable for processing into biofuel. The scientists have presented the optimized technique for the removal from wastewater of organic compounds, along with nitrogen and phosphorus in the article, published in the Algal Research. (Source: EurekAlert! - Biology)
Source: EurekAlert! - Biology - August 24, 2017 Category: Biology Source Type: news
Biochar shows benefits as manure lagoon cover
(American Society of Agronomy) Manure is a reality in raising farm animals. Manure can be a useful fertilizer, returning valued nitrogen, phosphorus, and potassium to the soil for plant growth. But manure has problems. Odor offensiveness, gas emissions, nutrient runoff, and possible water pollution are just a few. New methods may reduce these negatives while potentially adding some positives: biochar covers. (Source: EurekAlert! - Biology)
Source: EurekAlert! - Biology - August 9, 2017 Category: Biology Source Type: news
The good, the bad and the algae
(DOE/Sandia National Laboratories) Sandia National Laboratories is testing whether one of California's largest and most polluted lakes can transform into one of its most productive and profitable. Southern California's 350-square-mile Salton Sea has well-documented problems related to elevated levels of nitrogen and phosphorus from agricultural runoff. Sandia intends to harness algae's penchant for prolific growth to clean up these pollutants and stop harmful algae blooms while creating a renewable, domestic source of fuel. (Source: EurekAlert! - Biology)
Source: EurekAlert! - Biology - August 7, 2017 Category: Biology Source Type: news
Dramatic changes needed in farming practices to keep pace with climate change
(Lancaster University) Researchers investigating nutrients in runoff from agricultural land warn that phosphorus losses will increase, due to climate change, unless this is mitigated by making major changes to agricultural practices. (Source: EurekAlert! - Medicine and Health)
Source: EurekAlert! - Medicine and Health - August 3, 2017 Category: International Medicine & Public Health Source Type: news
New system could remove two water pollutants from ag fields
(University of Illinois College of Agricultural, Consumer and Environmental Sciences) Algae blooms in the Gulf of Mexico use up the majority of the oxygen in the water, leading to massive " dead zones " that cannot support fish or other wildlife. The culprit? Nitrate, running off agricultural fields through tile drainage systems. But nitrate is only part of the problem. Algae in freshwater lakes and ponds flourishes when exposed to a different pollutant, phosphorus, and the tiniest amount is enough to trigger a bloom. (Source: EurekAlert! - Biology)
Source: EurekAlert! - Biology - July 31, 2017 Category: Biology Source Type: news
Experimentally realized mechanochemistry distinct from force-accelerated scission of loaded bonds
We report here unambiguous experimental validation of this hypothesis: Detailed kinetic measurements demonstrate that stretching phosphotriesters accelerates dissociation of the unloaded phosphorus-oxygen bond orthogonal to the pulling axis, whereas stretching organosiloxanes inhibits dissociation of the aligned loaded silicon-oxygen bonds. Qualitatively, the outcome is determined by phosphoester elongation and siloxane contraction along the pulling axis in the respective rate-determining transition states. Quantitatively, the results agree with a simple mechanochemical kinetics model. (Source: ScienceNOW)
Source: ScienceNOW - July 20, 2017 Category: Science Authors: Akbulatov, S., Tian, Y., Huang, Z., Kucharski, T. J., Yang, Q.-Z., Boulatov, R. Tags: Chemistry reports Source Type: news
Press release: The comeback kid —black phosphorus and its new potential
(Source: Nanotechweb.org Your News)
Source: Nanotechweb.org Your News - July 6, 2017 Category: Nanotechnology Source Type: news