Does graphene cause or prevent the corrosion of copper? New study finally settles the debate
(Chung Ang University) Graphene has attracted the interest of researchers in recent years because, despite its apparent anti-corrosive properties, its proximity was seen to increase the corrosion of copper. A research team from Chung-Ang University used Raman spectroscopy to analyze graphene's properties over a long period and found that the corroded surface of copper forms a hybrid layer with graphene, which prevents further corrosion. These findings could have potential applications in extending the life of copper--a common component of various electronic devices. (Source: EurekAlert! - Biology)
Source: EurekAlert! - Biology - February 14, 2020 Category: Biology Source Type: news
CO2 electrolysis to multicarbon products at activities greater than 1 A cm-2
Electrolysis offers an attractive route to upgrade greenhouse gases such as carbon dioxide (CO2) to valuable fuels and feedstocks; however, productivity is often limited by gas diffusion through a liquid electrolyte to the surface of the catalyst. Here, we present a catalyst:ionomer bulk heterojunction (CIBH) architecture that decouples gas, ion, and electron transport. The CIBH comprises a metal and a superfine ionomer layer with hydrophobic and hydrophilic functionalities that extend gas and ion transport from tens of nanometers to the micrometer scale. By applying this design strategy, we achieved CO2 electroreduction o...
Source: ScienceNOW - February 6, 2020 Category: Science Authors: Garcia de Arquer, F. P., Dinh, C.-T., Ozden, A., Wicks, J., McCallum, C., Kirmani, A. R., Nam, D.-H., Gabardo, C., Seifitokaldani, A., Wang, X., Li, Y. C., Li, F., Edwards, J., Richter, L. J., Thorpe, S. J., Sinton, D., Sargent, E. H. Tags: Chemistry reports Source Type: news
Medical News Today: Cancer: Using copper to boost immunotherapy
Scientists have successfully destroyed cancer cells in mice by using copper-based nanoparticles and immunotherapy. Importantly, the cancer did not return. (Source: Health News from Medical News Today)
Source: Health News from Medical News Today - January 25, 2020 Category: Consumer Health News Tags: Cancer / Oncology Source Type: news
Rational construction of a scalable heterostructured nanorod megalibrary
Integrating multiple materials in arbitrary arrangements within nanoparticles is a prerequisite for advancing many applications. Strategies to synthesize heterostructured nanoparticles are emerging, but they are limited in complexity, scope, and scalability. We introduce two design guidelines, based on interfacial reactivity and crystal structure relations, that enable the rational synthesis of a heterostructured nanorod megalibrary. We define synthetically feasible pathways to 65,520 distinct multicomponent metal sulfide nanorods having as many as 6 materials, 8 segments, and 11 internal interfaces by applying up to seven...
Source: ScienceNOW - January 23, 2020 Category: Science Authors: Steimle, B. C., Fenton, J. L., Schaak, R. E. Tags: Chemistry, Materials Science reports Source Type: news
Laser Welding Benefits Device Fabrication
Welding is often used to join metal components during the fabrication of medical devices, instruments, and implants. Traditionally, the dominant welding technology has been gas tungsten arc welding (GTAW), also known as tungsten inert gas (TIG) welding. However, GTAW can produce some undesirable results, particularly when welding thin metals or when shallow weld penetration is required (e.g.,
Source: MDDI - January 16, 2020 Category: Medical Devices Authors: Matt Wojewuczki, Mike Zehner, Bill Saunders, and Wolfgang Illich Tags: Manufacturing Equipment Source Type: news
Cu-64 DOTATATE PET could handle neuroendocrine tumors
PET imaging with copper-64 (Cu-64) DOTATATE could become a lower-radiation...Read more on AuntMinnie.comRelated Reading: RadioMedix, Curium file NDA for PET agent New class of radiotracers targets many cancer types FDA to fast track RadioMedix, Curium PET agent RadioMedix, ITM ink radiopharmaceutical generator deal Novel PET agent targets copper in prostate tumorsComments: 1/15/2020 8:18:43 AMNucMedPhysGuy Misleading use of the word "dose" here. Yes, injected activity is lower, but the patient absorbed dose is going to be much higher due to the 12 hour half life. "Lower radiation dose" typic...
Source: AuntMinnie.com Headlines - January 15, 2020 Category: Radiology Source Type: news
Scientists 'cure cancer in mice' by injecting lung and bowel tumours with tiny copper particles
Scientists from KU Leuven in Germany said the metal is known to be toxic to living cells but they could use it in tiny amounts to directly target cancer cells and avoid damaging healthy tissue. (Source: the Mail online | Health)
Source: the Mail online | Health - January 10, 2020 Category: Consumer Health News Source Type: news
Copper-based nanomaterials can kill cancer cells in mice
(KU Leuven) An interdisciplinary team of scientists from KU Leuven, the University of Bremen, the Leibniz Institute of Materials Engineering, and the University of Ioannina has succeeded in killing tumor cells in mice using nano-sized copper compounds together with immunotherapy. After the therapy, the cancer did not return. (Source: EurekAlert! - Medicine and Health)
Source: EurekAlert! - Medicine and Health - January 9, 2020 Category: International Medicine & Public Health Source Type: news
Ruby-red wonders: Six amazing health benefits of cranberries
(Natural News) Cranberries are a popular Thanksgiving food that you should start eating more often. They are superfoods that provide amazing health benefits, such as reducing inflammation, boosting circulation and preventing antibiotic resistance. Cranberries are fruits that come from an evergreen shrub of the same name. They provide a host of nutrients, such as manganese, copper and... (Source: NaturalNews.com)
Source: NaturalNews.com - December 26, 2019 Category: Consumer Health News Source Type: news
Feasibility and Safety of IUD Insertion by Mid-Level Providers in Sub-Saharan Africa
CONCLUSIONSThe findings support task shifting of IUD insertion to mid-level providers to improve IUD access in Sub-Saharan Africa. (Source: The Guttmacher Institute)
Source: The Guttmacher Institute - December 19, 2019 Category: International Medicine & Public Health Authors: Guttmacher Source Type: news
Zambia: Zambia Targets U.S.$30 Billion From Cannabis Exports
[East African] Zambia targets $30 billion in annual earnings from exporting cannabis. These earnings would supplement foreign exchange from copper which has plummeted leaving the country in a debt hole. (Source: AllAfrica News: Health and Medicine)
Source: AllAfrica News: Health and Medicine - December 18, 2019 Category: African Health Source Type: news
Fungal biodeterioration of copper metal
Conference abstracts (Source: The Aspergillus Website - updates)
Source: The Aspergillus Website - updates - December 11, 2019 Category: Respiratory Medicine Authors: MeganB Source Type: news
Electromagnetic Compatibility: A Mechanical Engineer ’s Perspective
Conclusion EMC should be considered first from an EEâs perspective, addressing concerns at the PCB level. MEs can get involved when enclosing the PCB or device. This is a collaborative effort. Both specialties should work through planning and execution. The ability to leverage a range of materials and components for EM enclosures allows engineers to make informed choices to meet the EMC requirements of a device. When considered at early stages, engineers can make EM an integral part of the design approach. (Source: MDDI)
Source: MDDI - December 10, 2019 Category: Medical Devices Authors: Nathan M üller Tags: Electronics Source Type: news
Role of zinc and copper ions in the pathogenetic mechanisms of traumatic brain injury and Alzheimer's disease - Isaev NK, Stelmashook EV, Genrikhs EE.
The disruption of homeostasis of zinc (Zn2+) and copper (Cu2+) ions in the central nervous system is involved in the pathogenesis of many neurodegenerative diseases, such as amyotrophic lateral sclerosis, Wilson's, Creutzfeldt-Jakob, Parkinson's, and Alzhe... (Source: SafetyLit)
Source: SafetyLit - November 22, 2019 Category: International Medicine & Public Health Tags: Age: Elder Adults Source Type: news
Highly enantioselective carbene insertion into N-H bonds of aliphatic amines
Aliphatic amines strongly coordinate, and therefore easily inhibit, the activity of transition-metal catalysts, posing a marked challenge to nitrogen-hydrogen (N–H) insertion reactions. Here, we report highly enantioselective carbene insertion into N–H bonds of aliphatic amines using two catalysts in tandem: an achiral copper complex and chiral amino-thiourea. Coordination by a homoscorpionate ligand protects the copper center that activates the carbene precursor. The chiral amino-thiourea catalyst then promotes enantioselective proton transfer to generate the stereocenter of the insertion product. This reactio...
Source: ScienceNOW - November 21, 2019 Category: Science Authors: Li, M.-L., Yu, J.-H., Li, Y.-H., Zhu, S.-F., Zhou, Q.-L. Tags: Chemistry reports Source Type: news
New danger for corals in warming oceans: Metal pollution
(Cornell University) Metal copper from agricultural runoff and marine paint leaching from boat hulls poses an emerging threat to soft coral sea fans in the waters around Puerto Rico. (Source: EurekAlert! - Biology)
Source: EurekAlert! - Biology - November 19, 2019 Category: Biology Source Type: news
Eating walnuts and following a low-saturated fat diet can decrease overall heart disease risk: Study
(Natural News) Walnuts are fiber-rich superfoods that are full of micronutrients, including copper, magnesium, and manganese. According to a recent study by researchers from The Pennsylvania State University, consuming nutritious walnuts while following a low-saturated-fat diet can help lower blood pressure. Cardiovascular disease, the biggest killer of adults in the U.S. Cardiovascular disease is responsible for the most number of... (Source: NaturalNews.com)
Source: NaturalNews.com - November 3, 2019 Category: Consumer Health News Source Type: news
Atomic-scale spin sensing with a single molecule at the apex of a scanning tunneling microscope
Recent advances in scanning probe techniques rely on the chemical functionalization of the probe-tip termination by a single molecule. The success of this approach opens the prospect of introducing spin sensitivity through functionalization by a magnetic molecule. We used a nickelocene-terminated tip (Nc-tip), which offered the possibility of producing spin excitations on the tip apex of a scanning tunneling microscope (STM). When the Nc-tip was 100 picometers away from point contact with a surface-supported object, magnetic effects could be probed through changes in the spin excitation spectrum of nickelocene. We used thi...
Source: ScienceNOW - October 31, 2019 Category: Science Authors: Verlhac, B., Bachellier, N., Garnier, L., Ormaza, M., Abufager, P., Robles, R., Bocquet, M.- L., Ternes, M., Lorente, N., Limot, L. Tags: Materials Science, Physics reports Source Type: news
EPA Proposed Rule For Lead In Drinking Water Calls For Service Line Replacement
WASHINGTON, D.C. - The U.S. Environmental Protection Agency on Oct. 10 announced a proposal to update the agency's Lead and Copper Rule (LCR) to protect drinking water supplies by strengthening drinking water treatment by requiring corrosion control measures by water suppliers and replacing lead service lines, among other things. (Source: LexisNexis® Mealey's™ Emerging Toxic Torts Legal News)
Source: LexisNexis® Mealey's™ Emerging Toxic Torts Legal News - October 16, 2019 Category: Medical Law Source Type: news
Chemical bond formation showing a transition from physisorption to chemisorption
Surface molecules can transition from physisorption through weak van der Waals forces to a strongly bound chemisorption state by overcoming an energy barrier. We show that a carbon monoxide (CO) molecule adsorbed to the tip of an atomic force microscope enables a controlled observation of bond formation, including its potential transition from physisorption to chemisorption. During imaging of copper (Cu) and iron (Fe) adatoms on a Cu(111) surface, the CO was not chemically inert but transited through a physisorbed local energy minimum into a chemisorbed global minimum, and an energy barrier was seen for the Fe adatom. Dens...
Source: ScienceNOW - October 10, 2019 Category: Science Authors: Huber, F., Berwanger, J., Polesya, S., Mankovsky, S., Ebert, H., Giessibl, F. J. Tags: Chemistry reports Source Type: news
Medical News Today: How does an IUD affect periods?
An intrauterine device (IUD) is a form of physical contraceptive. The two types of IUD are hormonal and copper. Discover how each one can affect a woman ’s period here. (Source: Health News from Medical News Today)
Source: Health News from Medical News Today - October 3, 2019 Category: Consumer Health News Tags: Women's Health / Gynecology Source Type: news
Copper, manganese, selenium and zinc in wild-growing edible mushrooms from the eastern territory of "green lungs of Poland": nutritional and toxicological implications - Miro ńczuk-Chodakowska I, Socha K, Zujko ME, Terlikowska KM, Borawska MH, Witkowska AM.
The aims of this study were to determine Cu, Mn, Se, and Zn content in wild mushrooms collected from unpolluted areas of the eastern Green Lungs of Poland (GLP) territory, to compare them to some popular species of cultivated mushrooms, evaluate mushroom c... (Source: SafetyLit)
Source: SafetyLit - September 30, 2019 Category: International Medicine & Public Health Tags: Home and Consumer Product Safety Source Type: news
Amorphous metals combined with polymers for the first time
Engel and Heraeus have reduced cycle times by up to 70 percent compared with previous production solutions for the injection molding of amorphous metals. In doing so, the two system partners have opened the door to these alloys with truly special qualities entering large-scale production for a wide assortment of end uses. Engel is presenting the next big step in this development at K 2019. Two-component parts made of amorphous metal and silicone will be produced for the first time â a process that is taking place in a fully automated manufacturing cell. ENGEL at K 2019 AMM 1 400 x 267.jpg Premiere for ...
Source: MDDI - September 13, 2019 Category: Medical Devices Tags: Plastics Today Source Type: news
A New World? Are the Americas Returning to Old Problems?
By Jan LundiusSTOCKHOLM / ROME, Sep 12 2019 (IPS) When I in 1980 first arrived in America it was a new world to me. I went from New York to Puerto Rico and the Dominican Republic and like so many visitors and migrants before me I was overwhelmed by both familiar and strange impressions. Familiar due to books I had read and movies I had seen, strange since I encountered unexpected things and new because both I and several of those I met compared themselves to the “old world”, i.e. Euroasia and parts of Africa. A sense of uniqueness, admiration for an assumed freshness and difference, can be discerned in the wri...
Source: IPS Inter Press Service - Health - September 12, 2019 Category: International Medicine & Public Health Authors: Jan Lundius Tags: Crime & Justice Development & Aid Economy & Trade Featured Global Headlines Health Human Rights Migration & Refugees TerraViva United Nations Source Type: news
Synthesis of a copper-supported triplet nitrene complex pertinent to copper-catalyzed amination
Terminal copper-nitrenoid complexes have inspired interest in their fundamental bonding structures as well as their putative intermediacy in catalytic nitrene-transfer reactions. Here, we report that aryl azides react with a copper(I) dinitrogen complex bearing a sterically encumbered dipyrrin ligand to produce terminal copper nitrene complexes with near-linear, short copper–nitrenoid bonds [1.745(2) to 1.759(2) angstroms]. X-ray absorption spectroscopy and quantum chemistry calculations reveal a predominantly triplet nitrene adduct bound to copper(I), as opposed to copper(II) or copper(III) assignments, indicating t...
Source: ScienceNOW - September 12, 2019 Category: Science Authors: Carsch, K. M., DiMucci, I. M., Iovan, D. A., Li, A., Zheng, S.-L., Titus, C. J., Lee, S. J., Irwin, K. D., Nordlund, D., Lancaster, K. M., Betley, T. A. Tags: Chemistry r-articles Source Type: news
Soft, Stretchable Health Monitor Eyed for Long-Term Use
One of the key challenges researchers aim to overcome with wearable technology to is to make it more comfortable for the user while still being able to perform and transmit data effectively. A team at the Georgia Institute of Technology (Georgia Tech) has made strides in this area with the development of a wireless, stretchable device they said allows for long-term health monitoring without creating discomfort for users, particularly allergic reactions or injuries that are associated with conventional adhesive sensors that use conductive gels. A wireless, wearable monitor built with stretchable electronics could allow com...
Source: MDDI - September 5, 2019 Category: Medical Devices Tags: Design News Source Type: news
A Teen Boy ’s Diet of Fries and Sausage Led to Blindness, According to a New Case Study
A new case study highlights a serious, though rare, side effect of a poor diet: blindness. In the Annals of Internal Medicine, a group of researchers from the University of Bristol in the U.K. report the unusual case of a teenage boy whose diet was so poor, it led to serious optic nerve damage and vision loss. The boy first reported fatigue to his doctors when he was 14. He was deficient in vitamin B12 but had few other health issues, so he received only vitamin B12 injections and dietary counseling. The next year, he began to experience hearing and vision disturbances, but doctors were unable to find a clear cause. After...
Source: TIME: Health - September 3, 2019 Category: Consumer Health News Authors: Jamie Ducharme Tags: Uncategorized Diet/Nutrition Source Type: news
Newark Officials Providing Bottled Water to 15,000 Homes Over Lead Contamination Concerns. Here ’s What You Need to Know About the City’s Water Crisis
It’s now the fifth straight day that residents in around 15,000 Newark, N.J. homes are being given bottled water for drinking and cooking, as city authorities and federal officials grapple with high levels of lead in their water supply. A federal judge is now determining whether or not the city has to expand the distribution of bottled water to more parts of the city. “This is a slap in the face to the residents of the city of Newark,” resident Donna Jackson told ABC7. “We are now in panic mode because the feds had to come in to tell us to stop drinking the water.” Here’s what you need ...
Source: TIME: Health - August 16, 2019 Category: Consumer Health News Authors: Josiah Bates Tags: Uncategorized health Newark onetime Source Type: news
Choline-PET with mpMRI is cost-effective for prostate cancer
Adding F-18 choline PET to multiparametric MRI (mpMRI) was more effective than...Read more on AuntMinnie.comRelated Reading: Prostate imaging director can improve MRI efficiency mpMRI falls short for prostate cancer in African Americans AI can identify, classify prostate cancer on mpMRI Novel PET agent targets copper in prostate tumors PET, MRI may aid prostate cancer treatment (Source: AuntMinnie.com Headlines)
Source: AuntMinnie.com Headlines - July 31, 2019 Category: Radiology Source Type: news
Study finds micronutrient deficiencies common at time of celiac disease diagnosis
(Mayo Clinic) Micronutrient deficiencies, including vitamins B12 and D, as well as folate, iron, zinc and copper, are common in adults at the time of diagnosis with celiac disease. These deficiencies should be addressed at that time, according to a study by Mayo Clinic researchers. (Source: EurekAlert! - Medicine and Health)
Source: EurekAlert! - Medicine and Health - June 24, 2019 Category: International Medicine & Public Health Source Type: news
Study finds micronutrient deficiencies common at time of celiac disease diagnosis
ROCHESTER, Minn. -- Micronutrient deficiencies, including vitamins B12 and D, as well as folate, iron, zinc and copper, are common in adults at the time of diagnosis with celiac disease. These deficiencies should be addressed at that time, according to a study by Mayo Clinic researchers. The retrospective study of 309 adults newly diagnosed with [...] (Source: News from Mayo Clinic)
Source: News from Mayo Clinic - June 24, 2019 Category: Databases & Libraries Source Type: news
Africa: After ECHO, Let's Find Out Why Women Are Not Using Barrier Methods
[allAfrica] Durban -So, the Evidence for Contraceptive Options and HIV Outcome (ECHO) study has found no significant difference in risk of HIV acquisition among women using one of three most methods of birth of control that are used on the continent - Depo-Medroxyprogesterone Acetate (DMPA, Depo-Provera), the Copper IUD and Jadelle implant. The results of the study were announced at the 9th SA Aids Conference in Durban by a panel of doctors, scientists and activists. (Source: AllAfrica News: HIV-Aids and STDs)
Source: AllAfrica News: HIV-Aids and STDs - June 18, 2019 Category: Infectious Diseases Source Type: news
HIV Risk Does Not Differ With Three Contraceptive Methods
THURSDAY, June 13, 2019 -- For African women seeking effective contraception, there is no significant difference in HIV incidence with use of intramuscular depot medroxyprogesterone acetate (DMPA-IM), a copper intrauterine device (IUD), and a... (Source: Drugs.com - Pharma News)
Source: Drugs.com - Pharma News - June 13, 2019 Category: Pharmaceuticals Source Type: news
The Lancet: First randomised trial finds no substantial difference in risk of acquiring HIV for three different forms of contraception
(The Lancet) A randomised trial of more than 7,800 African women found that a type of contraceptive injection (intramuscular depot medroxyprogesterone acetate -- DMPA-IM) posed no substantially increased risk of HIV acquisition when compared with a copper intrauterine device (IUD) and a levonorgestrel (LNG) implant. The results of this first ever randomised trial in the area, published in The Lancet, counter 30 years of epidemiology research suggesting a potential association between some types of contraceptives and risk of acquiring HIV. (Source: EurekAlert! - Infectious and Emerging Diseases)
Source: EurekAlert! - Infectious and Emerging Diseases - June 13, 2019 Category: Infectious Diseases Source Type: news
US Supreme Court will hear Montana arsenic cleanup case
The U.S. Supreme Court will decide whether residents of two Montana communities can continue with their decade-long effort to get the Atlantic Richfield Co. to pay for a more thorough cleanup of arsenic after a century of copper smelting (Source: ABC News: Health)
Source: ABC News: Health - June 10, 2019 Category: Consumer Health News Tags: Health Source Type: news
Metals influence C-peptide hormone related to insulin
(University of California - Davis) Metals such as zinc, copper and chromium bind to and influence a peptide involved in insulin production, according to new work from chemists at UC Davis. The research is part of a new field of 'metalloendocrinology' that takes a detailed look at the role of metals in biological processes in the body. (Source: EurekAlert! - Medicine and Health)
Source: EurekAlert! - Medicine and Health - May 17, 2019 Category: International Medicine & Public Health Source Type: news
Are Onions and Garlic Healthy? Here ’s What Experts Say
Garlic and onions are staples for many home cooks. But do these plants actually add any health benefits to your dishes? Or are they purely for flavor? People who try to eat colorful fruits and vegetables in order to get a wide range of vitamins and minerals may think that pale foods like onions and garlic don’t offer many nutrients. But although they may not look like nutritional powerhouses, experts say they are. Onions of all colors (including white) are good sources of vitamin C, vitamin B6, potassium and folate, while garlic is rich in vitamin C, vitamin B6, thiamin, potassium, calcium, phosphorous, copper and ma...
Source: TIME: Health - May 15, 2019 Category: Consumer Health News Authors: Jamie Ducharme Tags: Uncategorized Diet/Nutrition Source Type: news
Particulate methane monooxygenase contains only mononuclear copper centers
We present biochemical and electron paramagnetic resonance spectroscopic characterization most consistent with two monocopper sites within pMMO: one in the soluble PmoB subunit at the previously assigned active site (CuB) and one ~2 nanometers away in the membrane-bound PmoC subunit (CuC). On the basis of these results, we propose that a monocopper site is able to catalyze methane oxidation in pMMO. (Source: ScienceNOW)
Source: ScienceNOW - May 9, 2019 Category: Science Authors: Ross, M. O., MacMillan, F., Wang, J., Nisthal, A., Lawton, T. J., Olafson, B. D., Mayo, S. L., Rosenzweig, A. C., Hoffman, B. M. Tags: Biochemistry reports Source Type: news
Mining microbial treasures from toxic sites
(American Chemical Society) Filled with a noxious brew of copper, cadmium and arsenic, with a pH rivaling that of sulfuric acid, Montana's Berkeley Pit seems inhospitable to life. Nonetheless, scientists have discovered microorganisms in this abandoned copper mine and other human-made noxious sites. These extreme environments induce microbes to synthesize potent, never-before-seen molecules that could find uses in human medicine, according to an article in Chemical& Engineering News (C&EN), the weekly news magazine of the American Chemical Society. (Source: EurekAlert! - Medicine and Health)
Source: EurekAlert! - Medicine and Health - May 8, 2019 Category: International Medicine & Public Health Source Type: news
Coppers rapid ascent in visible-light photoredox catalysis
Visible-light photoredox catalysis offers a distinct activation mode complementary to thermal transition metal catalyzed reactions. The vast majority of photoredox processes capitalizes on precious metal ruthenium(II) or iridium(III) complexes that serve as single-electron reductants or oxidants in their photoexcited states. As a low-cost alternative, organic dyes are also frequently used but in general suffer from lower photostability. Copper-based photocatalysts are rapidly emerging, offering not only economic and ecological advantages but also otherwise inaccessible inner-sphere mechanisms, which have been successfully ...
Source: ScienceNOW - May 2, 2019 Category: Science Authors: Hossain, A., Bhattacharyya, A., Reiser, O. Tags: Chemistry, Online Only review Source Type: news
Vitamins and Supplements Can ’t Replace a Balanced Diet, Study Says
Roughly 90% of American adults do not eat enough fruits and vegetables, but many are trying to make up for it by popping pills. According to the Council for Responsible Nutrition, 75% of U.S. adults take a dietary supplement of some kind. Multivitamins, many people believe, are a one-step way to get the nutrients they need. But new research published in the Annals of Internal Medicine suggests that vitamins and supplements may not be enough to keep you healthy. Nutrients consumed via supplements do not improve health and longevity as effectively as those consumed through foods, according to the study. While getting the rig...
Source: TIME: Health - April 8, 2019 Category: Consumer Health News Authors: Jamie Ducharme Tags: Uncategorized Diet/Nutrition Source Type: news
Delayed catalyst function enables direct enantioselective conversion of nitriles to NH2-amines
Accessing enantiomerically enriched amines often demands oxidation-state adjustments, protection and deprotection processes, and purification procedures that increase cost and waste, limiting applicability. When diastereomers can be formed, one isomer is attainable. Here, we show that nitriles, largely viewed as insufficiently reactive, can be transformed directly to multifunctional unprotected homoallylic amines by enantioselective addition of a carbon-based nucleophile and diastereodivergent reduction of the resulting ketimine. Successful implementation requires that competing copper-based catalysts be present simultaneo...
Source: ScienceNOW - April 4, 2019 Category: Science Authors: Zhang, S., del Pozo, J., Romiti, F., Mu, Y., Torker, S., Hoveyda, A. H. Tags: Chemistry r-articles Source Type: news
What Does the Liver Do?
Discussion The liver is one of the largest organs in the body, weighing just over 3 pounds in an adult. It is found in the upper right abdomen, under the right dome of the diaphragm. Grossly, it has asymmetric lobes with the right being larger than the left. The lobes are separated by a fibrous connective tissue band that also anchors the liver in the abdominal cavity. The gallbladder is located on the inferior surface of the liver and stores bile, which is then released into the duodenum. Microscopically, the liver cells are arranged in lobules with canals carrying blood vessels and bile ducts. At any moment about 10-13% ...
Source: PediatricEducation.org - April 1, 2019 Category: Pediatrics Authors: pediatriceducationmin Tags: Uncategorized Source Type: news
UA immunobiologist will use $1.9 million grant to explore copper's potential as antibiotic
(University of Arizona) While antibiotic resistance is on the rise, pharmaceutical companies are making fewer and fewer new antibiotics. UA immunobiologist Michael Johnson says this trend is in urgent need of reversal and believes copper might just be the key. (Source: EurekAlert! - Medicine and Health)
Source: EurekAlert! - Medicine and Health - March 29, 2019 Category: International Medicine & Public Health Source Type: news
Pfizer buys stake in French gene company in deal worth up to $636M
Pfizer Inc. said it's buying a stake in a French gene company in a deal that could be worth up to $636 million. The New York drug company (NYSE: PFE) said it's paying $51 million upfront to acquire a 15 percent stake in Vivet Therapeutics of Paris. Vivet is working on a drug — VTX-801 — to treat Wilson disease, which is a rare and possibly fatal condition in which excess copper collects in the body's l iver and other organs, perhaps to life-threatening levels. “VTX-801 could provide a potentially… (Source: bizjournals.com Health Care News Headlines)
Source: bizjournals.com Health Care News Headlines - March 21, 2019 Category: Health Management Authors: Ben Miller Source Type: news