搜索结果: 16-30 共查到“理学 system”相关记录1631条 . 查询时间(0.57 秒)
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Research on Port Cities' Transportation System and Trade Flows in China
中国港口城市 交通系统 贸易流动
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2023/5/5
This paper quantitatively investigates the effect of transportation system on trade flows of four major port cities in China. Due to the significant country-pair heterogeneities in both intercept and ...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Asymptotic stability of the bipolar Navier-Stokes-Poisson system with boundary
具有边界 双极 纳维-斯托克斯-泊松系统 渐近稳定性
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2023/5/6
In this talk, the combined quasi-neutral and zero-viscosity limits of the two-fluid Navier-Stokes-Poisson systems (one for ion and another for electron) with boundary are rigorously proved by investig...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Domain Decomposition and Optimized Schwarz Methods for the Dual-porosity-conduit System
双重孔隙 导管系统 区域分解 优化Schwarz方法
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2023/5/10
In this work, we propose and analyze domain decomposition methods to decouple the large system arisen from the discretization of dual-porosity-Stokes model. Robin boundary conditions are used to decou...
New system designs nanomaterials that conduct heat in specific ways（图）
传导热量 纳米材料 计算机芯片
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2023/6/6
Computer chips are packed with billions of microscopic transistors that enable powerful computation, but also generate a great deal of heat. A buildup of heat can slow a computer processor and make it...
Astronomers see carbon dioxide on planet outside solar system for first time（图）
詹姆斯韦伯 太空望远镜 系外行星 大气
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2023/6/25
Scientists using NASA’s James Webb Space Telescope have captured definitive evidence of carbon dioxide in the atmosphere of a planet beyond our solar system.
MIT scientists discover new antiviral defense system in bacteria（图）
细菌 抗病毒 防御系统 原核生物 病毒蛋白
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2023/6/5
The following press release was issued today by the Broad Institute of MIT and Harvard.
“Spring-loaded” system pops phosphorus into molecular rings（图）
“弹簧加载”系统 磷 分子环
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2023/6/7
MIT chemists have devised a new chemical reaction that allows them to synthesize a phosphorus-containing ring, using a catalyst to add phosphorus to simple organic compounds called alkenes.
Drug delivery system offers hope for treating genetic diseases（图）
药物输送系统 遗传疾病 治疗性蛋白质
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2023/6/21
Ateam of researchers led by Harvard and Broad Institute scientists has developed a new drug-delivery system using engineered DNA-free virus-like particles (eVLPs) that is able to edit genes associated...
Twin gene-editing system gives twice the efficiency（图）
基因编辑 双胞胎 DNA片段 可编程操作
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2023/6/21
Ateam of researchers led by Harvard and Broad Institute scientists has developed twin prime editing, a new, CRISPR-based gene-editing strategy that enables manipulation of gene-sized chunks of DNA in ...
New gene-transport system gets more drugs to sick muscles（图）
基因运输系统 肌肉疾病 药物输送
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2023/6/21
When Sharif Tabebordbar was a teenager, his father began having trouble walking. Soon, he became wheelchair-bound and was diagnosed with a rare genetic muscle disease.
中国地质大学科学技术发展院许磊，陈能成 等, 国家地理信息系统工程技术研究中心. Earth-Science Reviews (2021)，Spatiotemporal forecasting in earth system science: Methods, uncertainties, predictability and future directions（图）
时空；预测；问题；信息；系统；工程
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2021/10/14
近日，国家地理信息系统工程技术研究中心陈能成教授团队在地球科学领域顶级期刊《Earth-Science Reviews》（IF=12.413）上刊发研究成果—Spatiotemporal forecasting in earth system science: Methods, uncertainties, predictability and future directions。该文针对地球系统...
Smart laser cutter system detects different materials（图）
智能 激光切割机 智能材料 传感平台 SensiCut
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2023/6/7
With the addition of computers, laser cutters have rapidly become a relatively simple and powerful tool, with software controlling shiny machinery that can chop metals, woods, papers, and plastics. Wh...
System trains drones to fly around obstacles at high speeds
arithmetic drone aerodynamics
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2021/8/11
A new algorithm helps drones find the fastest route around obstacles without crashing. The system could enable fast, nimble drones for time-critical operations such as search and rescue.
Major Atlantic ocean current system might be approaching critical threshold
weather systems worldwide river stability current system collapses global warming freshwater inflow
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2021/8/6
A major Atlantic ocean current -- the Atlantic Meridional Overturning Circulation, or AMOC -- may have been losing stability in the course of the last century, according to new research. A potential c...