Medical Students From Natural Science and Nonscience Undergraduate Backgrounds: Similar Academic Performance and Residency Selection The majority of matriculating US medical students continue to major in the natural sciences as college undergraduates in the belief that this will enhance ... RL Dickman -...
Here, we report precise measurements of the stable isotopic composition of ruthenium captured in air filters before, during, and after the nuclear release, and find that the ruthenium collected during the period of the 2017 nuclear release has a non-natural isotopic composition. By comparing our ...
In subject area:Social Sciences A Non-Government Organisation (NGO) is defined as a non-government private organization that works to enhance socio-economic conditions through community-based and professional development activities at local and national levels, respectively. ...
- 《Environmental Earth Sciences》 被引量: 8发表: 2012年 Development and application of a methodology to estimate regional natural conditions for trace metals in marine sediments of southcentral Alaska's coastal ... Increasing levels of resource development and population growth along Alaska's ...
In subject area: Agricultural and Biological Sciences Circular RNA (circRNA) is a class of ncRNA produced from transcription of protein-coding genes in a novel “backsplicing” mechanism in which a downstream splice donor site is covalently linked to an upstream acceptor site which creates a circul...
Most natural systems operate far from equilibrium, displaying time-asymmetric, irreversible dynamics characterized by a positive entropy production while exchanging energy and matter with the environment. Although stochastic thermodynamics underpins the irreversible dynamics of small systems, the nonequilibrium ...
Directional transport and propagation of quantum particle and current, such as electron, photon, spin, and phonon, are known to occur in the materials system with broken inversion symmetry, as exemplified by the diode in semiconductor p–n junction and the natural optical activity in chiral materia...
Improving natural can enable the sustainable production of chemicals. However, neither purely artificial nor purely biological approaches seem poised to realize the potential of solar-to-chemical . We developed a hybrid approach, whereby we combined the highly efficient light harvesting of inorganic semic...
Diverse NAD mimics have been developed for applications in chemical and biological sciences. Nicotinamide cytosine dinucleotide (NCD) has emerged as a non-natural cofactor to mediate redox transformations, while cells are fed with chemically synthesized NCD. Here, we create NCD synthetase (NcdS) by ...
Graphene was obtained from the Chengdu Organic Chemistry Company Limited, Chinese Academy of Sciences (average diameter range 0.5–3 μm, thickness range 0.55–3.74 nm, purity was about 98%). N, N-Dimethylformamide (DMF) was obtained from the Tiantai Fine Chemicals Company Limited, China. (...