Abstract. Molybdenum concentration and δ98/95Mo values for NIST SRM 610 and 612 (solid glass), NIST SRM 3134 (lot 891307; liquid) and IAPSO seawater reference material are presented based on comparative measurements by MCICPMS performed in laboratories at the Universities of Bern and Oxford. NIST SRM 3134 and NIST SRM 610 and 612 were found to have identical and homogeneous .
The molybdenum carbide formation procedure investigated by insitu XRD and TGAMS indied that the phase transitions followed the path of (NH4)(6)Mo7O24 center dot 4H(2)O > (NH4)(2)Mo3O10 > (NH4)(2)Mo14O42 > Mo8O23 > Mo4O11 > MoO2 > Mo2C. The volatile gases CO, H2, and CH4 evolved from biochar and the biochar solid carbon participated in the reduction of molybdenum .
· Patients with allergic patchtest reactions to nickel and molybdenum had a higher frequency of instent restenoses than patients without hypersensitivity. Allergic reactions to nickel and molybdenum released from stents may be one of the triggering mechanisms for instent restenosis.
· The world population consumes an average of 15 trillion watts of power, 85% of which comes from burning fossil resources including petroleum, natural gas, coal, and wood. 1 Despite their low cost and high quality, the use of fossil fuels is unavoidably coupled to the release of many compounds such as carbon dioxide (CO 2) that may adversely affect the environment such as acidifying oceans .
Abstract. Molybdenum (Mo) concentrations in a sediment core from the Cariaco basin on the Venezuelan continental shelf can be partitioned between a marine fraction and a terrigenous fraction. The accumulation rate of the marine fraction of Mo increased abruptly 15 000 calendar years ago (15 ka), from mg • cm2 • yr1 to u3e4 μg • cm2 • yr1, and then decreased abruptly at 9 ...
Abstract. A molybdenumreducing bacterium from Antarctica has been isolated. The bacterium converts sodium molybdate or Mo 6+ to molybdenum blue (Moblue). Electron donors such as glucose, sucrose, fructose, and lactose supported molybdate reduction. Ammonium sulphate was the best nitrogen source for molybdate reduction. Optimal conditions for molybdate reduction were between 30 and 50 mM ...
Abstract. The oxygenation state of Earth's oceans is a driver of evolution and extinction events as well as climate change. In recent years stable isotope fractionation of redox sensitive elements such as molybdenum (Mo) have been used as quantitative tracers of past redoxconditions in a number of marine environments.
leaves across gradients of climate, soil and plant functional type in China W. X. Han,1,2 J. Y. Fang,1,* P. B. Reich,3,4 F. Ian Woodward5 and Z. H. Wang1 Abstract Understanding variation of plant nutrients is largely limited to nitrogen and to a lesser extent phosphorus. Here we analyse patterns of variation in 11 elements (nitrogen⁄phosphorus⁄potassium⁄calcium⁄magnesium⁄ sulphur ...
abstract = " Molybdenum (Mo) concentrations in a sediment core from the Cariaco basin on the Venezuelan continental shelf can be partitioned between a marine fraction and a terrigenous fraction. The accumulation rate of the marine fraction of Mo increased abruptly 15 000 calendar years ago (15 ka), from < μg · cm 2 · yr 1 to >4 μg · cm 2 · yr 1, and then decreased abruptly at 9 ...
· Abstract Over the last 50 years, we argue that incentives for academic scientists have become increasingly perverse in terms of competition for research funding, development of quantitative metrics to measure performance, and a changing business model for higher eduion itself. Furthermore, decreased discretionary funding at the federal and state level is creating a .
Abstract This study investigates the effect of climate change on nitrogen and phosphorus discharges from a watershed in western Japan. Numerical simulations for a 30year period (1978–2007) demonstrate a decrease in the annual precipitation as well as in the loads of nitrogen and phosphorus, over the study period. Nutrient fluxes were estimated using the Soil and Water Assessment Tool (SWAT ...
Legacy Molybdenum Mine Tailings in the Context of the Questa Caldera: Distinguishing Anthropogenic from Background Water Types Kylian Robinson New Mexico Tech, Earth and Environmental Science, Abstract 1 Questa is loed near the confluence of the Rio Grande and Red River in north central New Mexico. Domestic supply wells in the area access waters .
Abstract. Molybdenum (Mo) concentrations in a sediment core from the Cariaco basin on the Venezuelan continental shelf can be partitioned between a marine fraction and a terrigenous fraction. The accumulation rate of the marine fraction of Mo increased abruptly 15 000 calendar years ago (15 ka), from < μgṁcm −2 ṁyr −1 to >4 μgṁcm −2 ṁyr −1, and then decreased abruptly at 9 ...
Molybdenum (Mo) concentrations in a sediment core from the Cariaco basin on the Venezuelan continental shelf can be partitioned between a marine fraction and a terrigenous fraction. The accumulation rate of the marine fraction of Mo increased abruptly 15 000 calendar years ago (15 ka), from 4 ??g ?? cm2 ?? yr1, and then decreased abruptly at 9 ka.
Abstract Greenhouse experiments were conducted to evaluate the effect of different rates of molybdenum (Mo, mg kg −1 ) on the yield and quality of Trifolium pratense L. ( red clover ), nitrogenase, and some biological parameters (microbial biomass, Lasparaginase activity, and Lglutaminase activities) in four Andisols.
Climate change, deforestation, overgrazing, fisheries collapse, food insecurity, and the rapid extinction of species are all part of a single, overarching problem: Humanity is simply demanding more from the Earth than it can provide. By focusing on the single issue, we can address all of its symptoms, rather than solving one problem at the cost of another. Also, it makes the selfinterest to ...
· cPMP substitution is the first effective therapy for patients with MoCD type A and has a favourable safety profile. Restoration of molybdenum cofactordependent enzyme activities results in a greatly improved neurodevelopmental outcome when started sufficiently early. The possibility of MoCD type A needs to be urgently explored in every encephalopathic neonate to avoid any delay in .
ABSTRACT The largest single metalmining operation in the history of mining in Colorado has been developed at Climax, as a result of the increased use of molybdenum in the steel and other industries. Production of molybdenum at Climax was notable for a short period during the World War; it ceased from April 1919 to August 1924 but since then has shown a steady increase. In 1930 from 1,000 to ...
REILLY J (1996). Climate Change; global agriculture and regional vulberability, 237–266. In: Bazzaz F, Sombrock W. Eds. Global Climate Change and Agricultural Production. Wiley, Chichester, UK. ROBLETO EA (1988). Effect of the fertilization with calcium, phosphorus and molybdenum in the nitrogen fixation and yield common bean. Escuela ...
· We repeatedly searched PubMed and meeting abstracts (SSIEM, SIMD) for case reports and case series detailing the natural history and previous individual treatment trials in severe molybdenum cofactor deficiency (MoCD) published up to May 15, 2013, using the search terms "Molybdenum cofactor deficiency" OR "case report" OR "treatment" in all fields. From the literature .
Oxidation of Molybdenumbased Alloys Keywords: High temperature oxidation, Thermogravimetry, Corrosion, Mobased alloys ABSTRACT To reduce fuel consumption in air traffic, airplane turbines are required to be operated at higher combustion temperatures. For this purpose, new high temperature resistant materials are necessary. MoSiB alloys could be suitable materials because at temperatures ...
· Abstract | References | PDF (285 KB) | Permissions 13 Views; 0 CrossRef citations; 0 Altmetric; Article. Statistical Assessment of Malaria Risk Factors Using Cox Proportional Hazard Approach. Ruffin Mutambayi, James Ndege, Adeboye Azeez, Yong Song Qin Akinwumi Odeyemi. Pages: 106116. Published online: 15 Feb 2018. Abstract | References | PDF (493 KB) | Permissions .
The molybdenum minerals in the NiMo ore are mainly jordisite, but the mine also contains various other materials composed of molybdenum and sulfur in different ratios [5,6,7]. The molybdenum mineral distribution pattern varies throughout the region, with certain areas showing grainy, reticular, veinlike, nodular, or zonal distributions, or even distributions in conjunction with pyrite [ 8, 9 ].
We measured the molybdenum isotope compositions (δ98Mo) of welldated sediment cores from two lakes in eastern Canada in an effort to distinguish between natural and anthropogenic contributions to these freshwater aquatic systems. Previously, Chappaz et al.(1) ascribed pronounced 20thcentury Mo concentration enrichments in these lakes to anthropogenic inputs. δ98Mo values in the deeper ...
