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相关概念视频

Atomic Emission Spectroscopy: Interference01:30

Atomic Emission Spectroscopy: Interference

164
In atomic emission spectroscopy (AES), high-temperature atomizers excite a broad range of elements and molecules that generate complex emissions from sources such as oxides, hydroxides, and flame combustion products in the flame or plasma. Several strategies can be employed to minimize spectral interferences caused by overlapping emission lines or bands. These include increasing instrument resolution, choosing alternative emission lines, optimally placing the detector in low-background regions,...
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Cryo-electron Microscopy01:28

Cryo-electron Microscopy

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Conventional electron microscopy (EM) involves dehydration, fixation, and staining of biological samples, which distorts the native state of biological molecules and results in several artifacts. Also, the high-energy electron beam damages the sample and makes it difficult to obtain high-resolution images. These issues can be addressed using cryo-EM, which uses frozen samples and gentler electron beams. The technique was developed by Jacques Dubochet, Joachim Frank, and Richard Henderson, for...
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Atomic Emission Spectroscopy: Lab01:29

Atomic Emission Spectroscopy: Lab

145
AES is a powerful analytical technique, especially effective when used with plasma sources, producing abundant spectra in characteristic emission lines. The Inductively Coupled Plasma (ICP), in particular, yields superior quantitative analytical data due to its high stability, low noise, low background, and minimal interferences under optimal experimental conditions. However, newer air-operated microwave sources are emerging as promising alternatives that could be more cost-effective than...
145
EDTA: Auxiliary Complexing Reagents01:26

EDTA: Auxiliary Complexing Reagents

538
EDTA titrations are usually carried out in highly basic conditions, where the fully deprotonated form of EDTA, Y4−, actively complexes with the free metal ions in the solution. Several metal ions precipitate as hydrous oxide (hydroxides, oxides, or oxyhydroxides) under these conditions, lowering the concentration of free metal ions in the solution. For this reason, auxiliary complexing agents or ligands such as ammonia, tartrate, citrate, or triethanolamine are used in EDTA titrations to...
538
Mnemonic Devices01:23

Mnemonic Devices

58
Mnemonic devices are cognitive tools that facilitate memory retention by linking new information to familiar patterns or organizational strategies. These techniques are beneficial for remembering complex or lengthy sets of information by simplifying and structuring them in easily retrievable ways.
Acronyms
Acronyms are created by using the initial letters of a series of words to form a new word or phrase. This approach condenses complex information into a single, memorable entity. For example,...
58
Effects of EDTA on End-Point Detection Methods01:18

Effects of EDTA on End-Point Detection Methods

246
Different methods, such as visual observance of metal-ion indicators, spectroscopic techniques, and potentiometric methods, can determine the endpoint of an EDTA titration.
In the visual method, metal-ion indicators (metallochromic dyes), which have distinct colors in their free and complex forms, are added to the mixture to signal the titration's end point. They form stable complexes with metal ions, but these complexes are weaker than the corresponding metal–EDTA complexes. As a...
246

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Updated: Jun 2, 2025

Gradient Echo Quantum Memory in Warm Atomic Vapor
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Gradient Echo Quantum Memory in Warm Atomic Vapor

Published on: November 11, 2013

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使用高级加密标准进行内存加密.

Tobias Kovats1, Navaneeth Rameshan1, Kumudu Geethan Karunaratne1

  • 1IBM Research-Europe, 8803 Rüschlikon, Zurich, Switzerland.

Philosophical transactions. Series A, Mathematical, physical, and engineering sciences
|January 16, 2025
PubMed
概括
此摘要是机器生成的。

本研究介绍了一种用于高级加密标准 (AES) 加密的新型内存计算方法,显著提高了性能和能源效率. 新方法克服了数据移动的瓶,实现了高达19.7倍的速度改进.

关键词:
密码学 密码学 密码学在内存计算中的内存计算.

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Last Updated: Jun 2, 2025

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Simultaneous Monitoring of Wireless Electrophysiology and Memory Behavioral Test as a Tool to Study Hippocampal Neurogenesis
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科学领域:

  • 计算机科学 计算机科学
  • 电气工程 电气工程
  • 密码学 密码学 密码学 密码学

背景情况:

  • 数据加密需要高能源效率和敏感数据应用程序的低延迟.
  • 高级加密标准 (AES) 是一种常见的对称密钥算法,但性能受到内存和处理器之间的数据移动的限制.
  • 内存计算 (IMC) 为克服这些局限性提供了一个潜在的解决方案.

研究的目的:

  • 提出和验证一种新的内存计算 (IMC) 方法,用于高级加密标准 (AES) 加密和密钥扩展.
  • 展示用于内存AES操作的相变内存 (PCM) 技术的使用.
  • 评估拟议的基于IMC的AES系统的性能和能源效率.

主要方法:

  • 开发了一种内存计算 (IMC) 方法,用于使用相变内存 (PCM) 技术进行AES加密和密钥扩展.
  • 在PCM交叉阵列中实现内存操作符,以灵活调整性能.
  • 介绍了并行内存多项式模块化乘法,并探索了PCM随机键生成的随机性质.
  • 设计并使用了一个循环精确的模拟器,使用Spice参数进行详细的延迟和能量分析.

主要成果:

  • 基于IMC的AES方法显示了与最先进的方法相比的显著改进.
  • 在相当的能源效率下,实现了高达19.7倍的速度因子改进.
  • 在一个原型芯片上验证了内存AES加密和密钥扩展的可行性.

结论:

  • 拟议的内存计算方法通过减少数据流动,有效地解决了传统AES实现的局限性.
  • 这种新的方法为各种应用中安全数据加密提供了高效和高性能的解决方案.
  • 在IMC中使用PCM技术为未来的安全计算平台提供了一个有希望的方向.