搜索结果: 1-15 共查到“生物学 carbon”相关记录42条 . 查询时间(0.42 秒)
Losses of eelgrass beds give rise to large emissions of carbon and nutrients
eelgrass bed ecosystem eutrophication nitrogen
2021/8/5
Losses of important eelgrass meadows in western Sweden since the 1980s have led to considerable bottom erosion and the release of carbon and nitrogen; substances that contribute to increasing climate ...
Beneath the ocean's surface, a virus is hijacking the metabolism of one of the most abundant organisms on Earth.The marine cyanobacterium Prochlorococcus marinus is the dominant photosynthet...
Structural complexity in forests improves carbon capture（图）
Structural complexity forests carbon capture
2019/10/17
Forests in the eastern United States that are structurally complex -- the arrangement of vegetation is varied throughout the physical space -- sequester more carbon, according to a new study in Ecolog...
High carbon dioxide can create 'shrinking stems' in marshes（图）
High carbon dioxide shrinking stems marshes
2019/10/18
For most plants, carbon dioxide acts like a steroid: the more they take in, the bigger they get. But in a new study, scientists at the Smithsonian Environmental Research Center, Villanova University a...
Teaching Life a New Trick:Bacteria Make Boron-Carbon Bonds（图）
Teaching Life a New Trick Bacteria Boron-Carbon Bonds
2017/12/18
In another feat of bioengineering, Caltech's Frances Arnold, the Linus Pauling Professor of Chemical Engineering, Bioengineering and Biochemistry, and her team have created bacteria that can, for the ...
Study:Sunlight and the right microbes convert Arctic carbon into carbon dioxide（图）
Sunlight microbes convert Arctic carbon carbon dioxide
2017/10/25
Nearly half of the organic carbon stored in soil around the world is contained in Arctic permafrost, which has experienced rapid melting, and that organic material could be converted to greenhouse gas...
Stanford research finds that diversity of large animals plays an important role in carbon cycle
Stanford diversity of large animals plays carbon cycle
2017/10/25
Trees in tropical forests are well known for removing carbon dioxide from the air and storing the potent greenhouse gas as carbon in their leafy branches and extensive roots. But a new analysis led by...
Association of TCN2 rs1801198 c.776G>C polymorphism with markers of one-carbon metabolism and related diseases: a systematic review and meta-analysis of genetic association studies
cobalamin c.776G>C genetic association studies
2018/11/20
Background: Vitamin B-12 (cobalamin) deficiency may produce severe neurologic and hematologic manifestations. Approximately 20–25% of circulating cobalamin binds to transcobalamin 2 (TCN2), which is r...
Two undergrads improve plant carbon-cycle models（图）
Two undergrads improve plant carbon-cycle models
2017/9/1
In the summer of 2012, two undergraduate students tackled a problem that plant ecology experts had overlooked for 30 years. The students demonstrated that different plant species vary in how they take...
Study illuminates fate of marine carbon in last steps toward sequestration
fate marine carbon last steps toward sequestration
2017/7/20
The ocean sequesters massive amounts of carbon in the form of “dissolved organic matter,” and new research explains how an ancient group of cells in the dark ocean wrings the last bit of energy from c...
Circulating concentrations of biomarkers and metabolites related to vitamin status, one-carbon and the kynurenine pathways in US, Nordic, Asian, and Australian populations
biomarker Lung Cancer Cohort Consortium one-carbon metabolism tryptophan metabolism vitamin status
2018/11/14
Background: Circulating concentrations of biomarkers that are related to vitamin status vary by factors such as diet, fortification, and supplement use. Published biomarker concentrations have also be...
Polar glaciers may be home to previously undiscovered carbon cycle
Polar glaciers home to previously undiscovered carbon cycle
2017/4/27
Microbes in streams flowing on the surface of glaciers in the Arctic and Antarctic may represent a previously underestimated source of organic material and be part of an as yet undiscovered "dynamic l...
Gordon Research Conference on Molecular Basis of Microbial One-Carbon Metabolism
Molecular Basis Microbial One-Carbon Metabolism
2016/7/29
Metabolism of one-carbon (C1) compounds is shared by all living organisms today, yet microorganisms growing on one-carbon compounds established C1 metabolism as a major driver of global elemental cycl...
Vibrational Dynamics of Carbon Monoxide at the Active Sites of Mutant Heme Proteins
Vibrational Dynamics Carbon Monoxide Active Sites Mutant Heme Proteins
2016/5/23
Picosecond mid-IR pump−probe measurements of vibrational relaxation (VR) of CO bound to the active sites of wild-type and mutant myoglobins (Mb) reveal that an approximately linear relationship ...
Determination of the Carbon Monoxide Binding Constants of Myoglobin Mutants:Comparison of Kinetic and Equilibrium Methods
Binding Sites Carbon Monoxide Humans Kinetics Mutagenesis, Site-Directed Mutation Myoglobin Myoglobin Myoglobin Nitric Oxide Photolysis Protein Conformation Spectroscopy, Fourier Transform Infrared Structure-Activity Relationship
2016/5/23
The carbon monoxide (CO) binding constants of human myoglobin (Mb) and several single-site mutants have been determined using two different methods. In the kinetic method, which is commonly used for t...