搜索结果: 1-15 共查到“理学 brown”相关记录99条 . 查询时间(0.079 秒)
Tejal Desai: The evolution of engineering at Brown has been amazing to witness（图）
工程学 生物医学 细胞生物学
2023/6/26
At the end of her first academic year as dean, Tejal Desai reflects on what she learned and describes how Brown’s School of Engineering is building on distinctive strengths to advance its academic ent...
Using telescopes, tools and spaces at Brown, members of the University community capture awe-inspiring photos of the universe in spectacular fashion.
On the eve of Earth Day, Brown climate scientist outlines solutions for a warming world（图）
气候科学 全球变暖 气候变化
2023/6/26
Kim Cobb, a Brown University professor and director of the Institute at Brown for Environment and Society, spoke about the need to act on climate change, urging that action must be taken collaborative...
Brown mathematicians’ algorithm to serve as cryptography standard for quantum computing era（图）
算法 量子计算 密码学标准
2023/6/26
The federal government selected four algorithms to serve as standards for public key security in the pending era of quantum computers, three of which are based on technology devised by a team of Brown...
Caught speeding:Clocking the fastest-spinning brown dwarfs（图）
Caught speeding Clocking fastest-spinning brown dwarfs
2021/4/23
Astronomers have discovered the most rapidly rotating brown dwarfs -- three brown dwarfs that each complete a full rotation roughly once every hour. The rate is so extreme that if they rotated any fas...
基于Hoek-Brown强度折减法的边坡稳定性图表法研究
边坡工程 岩质边坡 安全系数 强度折减 Hoek-Brown准则 稳定性图表
2018/4/23
边坡稳定性图表为初步评价边坡的稳定性提供一种简单但却行之有效的途径。采用Hoek-Brown有限元强度折减法，提出一套求解Hoek-Brown准则下岩质边坡安全系数的稳定性图表。首先根据Hoek-Brown准则下岩体的正应力与剪切应力的关系，推导关于瞬时内摩擦角 和瞬时黏聚力 的一种显示表达公式，进而实现基于Hoek-Brown准则的有限元强度折减法在数值计算中的实施。算例分析表明，该方法获得的边...
Study casts doubt on warming implications of brown carbon aerosol from wildfires（图）
warming implications brown carbon aerosol wildfires
2017/10/25
As devastating wildfires continue to rage in the western U.S. and Canada, a team of environmental engineers at Washington University in St. Louis have discovered that light-absorbing organic particula...
Wolfing it Down:Brown Bears Reduce Wolf Kill Rate say USU Ecologists
Wolfing it Down Brown Bears Reduce Wolf Kill Rate say USU Ecologists
2017/2/16
If you’ve ever been elbowed out of the way at the dinner table by older, stronger siblings, you’ll identify with wolves competing with larger bears for food. A study by Utah State University ecologist...
Wolfing it Down:Brown Bears Reduce Wolf Kill Rate say USU Ecologists
Wolfing it Down Brown Bears Reduce Wolf Kill Rate USU Ecologists
2017/3/13
If you’ve ever been elbowed out of the way at the dinner table by older, stronger siblings, you’ll identify with wolves competing with larger bears for food. A study by Utah State University ecologist...
为克服基于Hoek-Brown强度准则的屈服面数值奇异问题，提出新的棱角处屈服面圆化方法，在此基础上，借助ABAQUS二次开发平台，采用FORTRAN语言编制理想弹塑性模型子程序，应力更新算法为完全隐式的向后欧拉积分算法； 提出基于Hoek-Brown准则的有限元强度折减技术，并将其嵌入到圆化后的屈服函数中，探讨了强度折减技术应用于Mohr-Coulomb强度准则和Hoek-Brown非线性强度准...
Brown dwarfs are smaller than stars, but more massive than giant planets. As such, they provide a natural link between astronomy and planetary science. However, they also show incredible variation whe...
应中国科学院西双版纳热带植物园群落构建与物种共存青年科学家小组的邀请，英国爱丁堡大学Calum Brown博士于2015年12月4日至8日到中国科学院西双版纳热带植物园举办空间统计与建模培训班并开展学术交流活动。
Professor Michael Brown，Department of Geology at University of Maryland（图）
crustal anatexis melt segregation Michael Brown Professor
2015/9/25
Professor Michael Brown，Department of Geology at University of Maryland，His Research Interests:High-T metamorphism, crustal anatexis and melt segregation, ascent and emplacement;granulites and HP/UHT ...
Brown Dwarfs,Stars Share Formation Process,New Study Indicates
Brown Dwarfs Stars Share Formation Process
2015/8/4
Astronomers using the Karl G. Jansky Very Large Array (VLA) have discovered jets of material ejected by still-forming young brown dwarfs. The discovery is the first direct evidence that brown dwarfs, ...
Professor Gordon Brown，Department of Earth System Science at Stanford University（图）
Professor Rob Dunbar Department of Earth System Science at Stanford University
2015/7/2
Gordon Brown specializes in environmental geochemistry and aqueous and surface geochemistry. He and his research group focus on chemical and microbiological interactions at environmental interfaces, w...