搜索结果: 1-15 共查到“理学 Nitrogen”相关记录452条 . 查询时间(0.14 秒)
南京农业大学农学院《Nature Plants》发表李姗教授课题组“Improving rice nitrogen-use efficiency by modulating a novel monouniquitination machinery for optimal root plasticity response to nitrogen”（图）
李姗 调控水稻根系 分子机制 基因资源
2023/10/28
2023年10月7日，Nature plants在线发表了南京农业大学李姗教授团队题为“Improving rice nitrogen-use efficiency by modulating a novel monouniquitination machinery for optimal root plasticity response to nitrogen”的研究论文。该团队在水稻中鉴定到一...
南京农业大学农学院《Remote Sensing of Environment》发表智慧农业团队“Estimating leaf nitrogen content by coupling a nitrogen allocation model with canopy reflectance”（图）
智慧农业 光谱监测 植物光合
2023/10/28
2022年11月1日，农学院智慧农业团队在国际顶级遥感期刊《Remote Sensing of Environment》发表了题为“Estimating leaf nitrogen content by coupling a nitrogen allocation model with canopy reflectance”的研究论文，报道了他们在冠层尺度氮含量光谱监测普适性模型构建方面的重要进展...
Study of Belize Barrier Reef Shows Nitrogen Enrichment from Land-based Sources Doubled in Four Decades：What’s killing coral reefs in Florida is also killing them in Belize
coral reef nitrogen concentration algal blooms ecological system
2021/8/5
Only 17 percent of live coral cover remains on fore-reefs in Belize. A study finds new evidence that nitrogen enrichment from land-based sources like agriculture run-off and sewage, are significantly ...
Nitrogen, an element that is essential for all living cells, makes up about 78 percent of Earth’s atmosphere. However, most organisms cannot make use of this nitrogen until it is converted into ammoni...
Heavy rainfall drives one-third of nitrogen runoff, according to new study（图）
Heavy rainfall drives one-third nitrogen runoff according new study
2020/11/13
Heavy rain events that occur only a few days a year can account for up to one-third of the annual nitrogen runoff from farmland in the Mississippi River basin, according to a new study by Iowa St...
Salt marshes' capacity to store carbon may be threatened by nitrogen pollution（图）
Salt marshes capacity carbon nitrogen pollution
2019/10/18
Deep in the waterlogged peat of salt marshes, carbon is stored at much greater rates than in land ecosystems, serving as an offset to climate change caused by carbon dioxide (CO2) build-up in the atmo...
In search of an undersea kelp forest's missing nitrogen（图）
undersea kelp forest missing nitrogen
2019/10/28
Plants need nutrients to grow. So scientists were surprised to learn that giant kelp maintains its impressive growth rates year-round, even in summer and early fall when ocean currents along the Calif...
Organic matter and crude protein digestibility predicted from nitrogen and fibre fractionation of festulolium hybrids
nitrogen fractions Cornell system nutritive value ruminant
2018/11/23
The objectives of the experiment were to study nitrogen fractions of the Cornell Net Carbohydrate and Protein System (CNCPS) and digestibility of organic matter (OMD) and crude protein (CPD) along wit...
云南师范大学化学化工学院有机化学课件Chapter18 Other Nitrogen Compounds
云南师范大学化学化工学院 有机化学 课件 Chapter18 Other Nitrogen Compounds
2018/6/28
云南师范大学化学化工学院有机化学课件Chapter18 Other Nitrogen Compounds。
中国地质大学科学技术发展院罗根明，谢树成等 地学院/BGEG国家重点实验室 Nature Communications，2018，Nitrogen fixation sustained productivity in the wake of the Palaeoproterozoic Great Oxygenation Event（图）
氮；蛋白质；脱氧；核糖；核酸；大分子
2021/10/21
近日，《Nature Communications》在线刊发了中国地质大学地球科学院和生物地质与环境地质国家重点实验室学科团队的研究论文——Nitrogen fixation sustained productivity in the wake of the Palaeoproterozoic Great Oxygenation Event。该文第一作者为罗根明副教授。
A liquid nitrogen immersion cryostat for optical measurements
liquid nitrogen immersion cryostat optical measurements
2016/5/23
A liquid nitrogen immersion cryostat has been developed for optical measurements. Liquid nitrogen in the sample chamber is kept free of bubbles and schlieren by the use of a cooling jacket of sacrific...
"The Effect of Magnesium Coordination on the 13C and 15N Magnetic Resonance Spectra of Chlorophyll a.The Relative Energies of Nitrogen np States as Deduced from a Complete Assignment of Chemical Shifts"
Magnesium Coordination 13C and 15N Magnetic Resonance Spectra Nitrogen np States Complete Assignment Chemical Shifts
2016/5/20
The 5 5 13Cand 4 I5Nnmr transitions in chlorophyll a and its magnesium-free derivative pheophytin a have been assigned. Emphasis is placed on the quaternary carbon atoms of the macrocycle which carry ...
Effect of L- or DL-methionine Supplementation on Nitrogen Retention, Serum Amino Acid Concentrations and Blood Metabolites Profile in Starter Pigs
Amino Acids Profile Methionine Pigs Nitrogen Balance
2016/5/20
The objective of the current study was to evaluate the effect of supplementation of either L-methionine (L-Met) or DL-methionine (DL-Met) to diets of starter pigs on nitrogen (N) balance, metabolism, ...
Controlling eutrophication: nitrogen and phosphorus
Controlling eutrophication nitrogen phosphorus
2016/5/18
The need to reduce anthropogenic nutrient
inputs to aquatic ecosystems in
order to protect drinking-water supplies
and to reduce eutrophication, including
the proliferation of harmful algal blooms...
One-step generation of multipartite entanglement among nitrogen-vacancy center ensembles
One-step generation multipartite entanglement nitrogen-vacancy center ensembles
2016/1/22
We describe a one-step, deterministic and scalable scheme for creating macroscopic arbitrary entangled coherent states (ECSs) of separate nitrogen-vacancy center ensembles (NVEs) that couple to a supe...