搜索结果: 1-15 共查到“知识库 物理学 Cell”相关记录22条 . 查询时间(0.275 秒)
浙江大学生命科学研究院2022年4月7日陆华松实验室在Nature Cell Biology合作发文揭示DNA损伤压力下PAPR1介导转录凝聚体动态调控的新机制（图）
陆华松 DNA损伤压力下 PAPR1介导 转录凝聚体 动态调控
2022/10/25
2022年4月7日，浙江大学生命科学研究院陆华松实验室与美国加州大学伯克利分校周强教授团队合作在Nature Cell Biology在线发表了题为“Poly(ADP-ribosylation) of P-TEFb by PARP1 disrupts phase separation to inhibit global transcription upon DNA damage”的研究论文。该工作...
THE LOW-FREQUENCY ELECTRIC FIELDS INDUCED IN A SPHERICAL CELL INCLUDING ITS NUCLEUS
LOW-FREQUENCY ELECTRIC FIELDS INDUCED SPHERICAL CELL NUCLEUS
2015/10/16
After a review of work leading to the determination of the electric field induced in the human body when exposed to the electromagnetic field near an extremely-low-frequency high-voltage transmission ...
Fabrication and characterization of an electrically contacted vapor cell
Fabrication and characterization electrically contacted vapor cell Atomic Physics
2012/4/20
We demonstrate the use of electrically contacted vapor cells to switch the transmission of a probe laser. The excitation scheme makes use of electromagnetically induced transparency involving a Rydber...
Fluid dynamics and noise in bacterial cell-cell and cell-surface scattering
Fluid dynamics noise bacterial cell-cell cell-surface scattering
2011/8/4
Abstract: Bacterial processes ranging from gene expression to motility and biofilm formation are constantly challenged by internal and external noise. While the importance of stochastic fluctuations h...
An FET-Based Unit Cell for an Active Magnetic Metamaterial
Terms—Artificial materials, FET circuits, Negative resistance devices, Polarizability, Oscillators
2011/9/14
A particle that can be used to create an active magnetic metamaterial has been designed using an FET transistor loaded in its gate by a conducting ring and in its source by a parallel resonance circui...
Snub 24-Cell Derived from the Coxeter-Weyl Group W(D4)
Snub 24-Cell the Coxeter-Weyl Group W(D4)
2011/7/26
Snub 24-Cell Derived from the Coxeter-Weyl Group W(D4).
Parity proofs of the Bell-Kochen-Specker theorem based on the 600-cell
Parity proofs Bell-Kochen-Specker theorem based 600-cell
2010/11/8
The set of 60 real rays in four dimensions derived from the vertices of a 600-cell is shown to possess numerous subsets of rays and bases that provide parity proofs of the Bell-Kochen-Specker (BKS) th...
Pitchfork bifurcations in blood-cell shaped dipolar Bose-Einstein condensates
Pitchfork bifurcations blood-cell shaped dipolar Bose-Einstein condensates
2010/4/1
We demonstrate that the method of coupled Gaussian wave packets is a full-fledged alternative to direct numerical solutions of the Gross-Pitaevskii equation of condensates with electromagnetically ind...
Particle-in-cell simulations of a lens on an f-plane
Particle-in-cell simulations lens on an f-plane
2009/11/13
A particle-in-cell ansatz for solving the Euler equations in a rotating frame is described. The approach is ideally suited for "layered" models of flows with sharp density and velocity fronts. The mat...
9-cell TESLA超导加速腔研制中Dumb-Bells的测量与调整
超导腔 Dumb-Bells 调整
2009/8/17
为了保证9-cell超导加速腔在场的平滑度、TM010模的频率以及加速器的总长度达到TESLA国际标准, 必须确保每个Dumb-Bell在以上各方面达到标准要求. 由于冲压、机加工以及电子束焊接等过程会引起形变, 因此, 必须在完成iris和加强筋的电子束焊接之后对Dumb-Bells进行微波和机械测量, 并根据测量的结果对其腔形和长度等作必要的调整. 北京大学已经建立了一套完整的测量和调整Dum...
Study on the RF performance of 2-cell superconducting cavity
2-cell superconducting cavity HOM loss factor interaction
2009/8/14
The physical design of the 2-cell superconducting cavity is presented. The RF parameters of the cavity and HOMs (high order modes) are reported. In this paper, we put the emphasis on the analysis of t...
1.3GHz单cell高梯度低损耗超导腔设计研究
超导腔 低损耗超导腔 重入式超导腔 国际直线对撞机
2009/7/7
计划中的国际直线对撞机(简称 ILC), 已确定采用低温超导技术. 研究表明, ILC的整体造价与超导腔的加速梯度密切相关, 因此新型高梯度超导腔的研制, 已成为目前ILC的热门课题. 目前超导腔加速梯度的提高受限于超导体射频临界磁场(Hcrf), 希望通过腔形的优化设计, 来减小超导腔表面峰值磁场与加速梯度的比值(Hp/Eacc), 进而提高超导腔的加速梯度, 以满足ILC的要求. 目前, 具有...
700MHz单cell超导腔洛伦兹力失谐分析
超导腔 洛伦兹力 失谐 加固
2009/7/7
着重论述了超导腔的洛伦兹力失谐,并对704MHz/β=0.45单cell纯铌超导腔进行了静态洛伦兹力失谐分析和动态洛伦兹力失谐分析,对增加其机械稳定性的方式方法进行了讨论和计算,给出了其相应的加固方案.
Three cell flying capacitor inverter for dielectric barrier discharge plasma applications
DC-AC power converters multilevel inverters electric discharges plasma
2010/7/5
It is reported the design, construction and initial tests of a three cell flying capacitor inverter (TCFCI) in a half-bridge configuration. The device operates at a 200 kHz frequency which leads to a ...