Gallium's dual personality stems from where it sits on the periodic table among two groups called the "metalloids" and the "post-transition metals." Gallium is next in line after aluminum, but its atoms are far more "independent" than its shiny foil (get it?) and aluminum is more "elect...
Despite this requirement, excess free transition metals are toxic. Free metal ions participate in the production of noxious reactive oxygen species and mis-metalate metalloproteins, rendering enzymes catalytically inactive. Thus, bacteria require systems to ensure metalloproteins are properly loaded with ...
Our study demonstrates that the carbenoid formation can also be accomplished from reactive hydrocarbons. We envision that this fundamental bond activation pattern (through TS5) may be generally relevant to other transition metals and “spring-loaded” molecules. On the basis of the calculated free-...
The 3d transition metals have been investigated as active centers in NiOOH to catalyze oxygen evolution reaction (OER); however, questions about the mechanism remain. Here, we study how cobalt (Co) and iron (Fe) doping and CoFe codoping determine the OER activity of NiOOH via experiments and...
What are the properties of transition metals? What is an element in the third period (row) of the periodic table with four 3p electrons? While balancing a chemical equation, how can one decide which elements to balance first? How many paired electrons...
In the midst of the transition to value-based care, healthcare payers are looking for key strategies to keep their populations healthier at a lower cost. To that end, most have realized that a transition to preventive care, as opposed to reactive care, will be essential to addre...
Though “quality control” and “quality assurance” are often used interchangeably, the two approaches differ in their area of focus:correction vs. prevention. Quality control is a reactive process, with activities designed to catch and correct quality issues before they impact the project. Quality...
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This had brought about the popular use of transition metals based catalytic agents and other organic intermediaries15,16. The major drawback in using such catalyst during hydrosilylation is the residual left- over of the metallic catalysts are often difficult to displace with normal cleaning methods,...
Activation of methane by transition metals-substituted aluminophosphate molecular sieves This patent describes a process for converting methane (CH[sub 4]) to C[sub 2+] hydrocarbons using a molecular sieve having a template. It comprises: calci... LE Iton,V. A. Maron - US 被引量: 11发表:...