ACDSee5.0的Screen Capture功能

介绍了ACDSee5.0的抓屏功能。

High-throughput computational screening and design of nanoporous materials for methane storage and carbon dioxide capture

The globally increasing concentrations of greenhouse gases in atmosphere after combustion of coal-or petroleum-based fuels give rise to tremendous interest in searching for porous materials to efficiently capture carbon dioxide(CO_2) and store methane(CH4), where the latter is a kind of clean energy source with abundant reserves and lower CO_2 emission. Hundreds of thousands of porous materials can be enrolled on the candidate list, but how to quickly identify the really promising ones, or even evolve materials(namely, rational design high-performing candidates) based on the large database of present porous materials? In this context, high-throughput computational techniques, which have emerged in the past few years as powerful tools, make the targets of fast evaluation of adsorbents and evolving materials for CO_2 capture and CH_4 storage feasible. This review provides an overview of the recent computational efforts on such related topics and discusses the further development in this field.

Neutrino energy loss by electron capture on strongly screened iron group nuclei

The influences on the neutrino energy loss rates in iron group nuclei at the same density are investigated in the presence of strong electron screening and in the absence of electron screening. The results show that at a temperature of 15 × 10^9 K, the neutrino energy loss rates which come from the electron capture process for most iron group nuclei decrease no more than 2 orders of magnitude but for the others （such as ^53,55,56,57,58,59,6o Co, ^56,59Ni） they can decrease about 3 orders of magnitude due to strong electron screening （SES）, whereas, at a temperature of 10^9K the neutrino energy loss rates of the most iron group nuclei can be diminished greatly due to the SES. For example, ^61Fe, ^60Fe, and ^62Ni the neutrino energy loss rates decrease about 4, 15 and 16 orders of magnitude and for ^57Cr, ^58Cr, and ^60Cr decrease about 18, 12, and 10 orders of magnitude respectively. According to our calculations the neutrino energy loss rates of nuclei ^58Mn, ^59Mn, ^60Mn, and ^62Mn may decrease about 13 orders of magnitude at a temperature of 10^9 K due to the SES.

Research on a Watermarking Algorithm for Remote Sensing Images Resist Screen Capture Attacks in Urban Planning Information Management

Remote Sensing data, as an essential urban basic information in urban planning, has the characteristics of large information capacity, real time, high update speed and accuracy. Because of urban spatial information involving multi-faceted public and public interests, its data security is very important. The use of digital watermarking technology can effectively protect the secu-rity of urban planning basic data. In practical applications, the “screen capture” poses a great threat to the security of remote sensing image. In order to resist the screen capture attacks, the QR code watermark information is encoded and converted, and combined with a circular angle template watermark, a digital watermarking algorithm for remote sensing images in urban planning information management is proposed. And the proposed algorithm is experimentally verified. Experiments show that the algorithm is robust against screen capture attacks, and provide security guarantee for urban construction and management.

Live Screen Capture软件在医学视频课件制作中的应用综述

Pinnacle studio 17下附带子程序Live Screen Capture的屏幕捕捉功能即可完成多媒体视频课件的制作,快速完成多媒体视频课件的制作方法以便教学应用,此软件操作方法简单易上手,能够快速完成多媒体视频课件的制作,是比较实用的医学多媒体视频课件制作方法.

Capture-R法与微柱凝胶法在不规则抗体筛查中的应用

目的探讨Capture-R法与微柱凝胶法在不规则抗体筛查中的临床应用价值。方法采用微柱凝胶法与Capture-R法对600份临床患者标本做不规则抗体筛查平行试验,对抗体筛查阳性标本进行抗体鉴定。分析比较两种方法在不规则抗体筛查试验中的灵敏度和特异性。结果微柱凝胶法和Capture-R法阳性检出率分别为3.17%(19/600)和2.83%(17/600),两种方法灵敏度比较差异无统计学意义(P>0.05);特异性分别为89.47%(17/19)和100.00%(17/17),两种方法特异性比较差异无统计学意义(P>0.05)。结论 Capture-R法在不规则抗体筛查试验中的灵敏度和特异性均达到微柱凝胶法检测水平,可有效检出有临床意义的红细胞抗体,提高临床输血安全。

Dynamics of N^(5+)-H electron capture in Debye plasmas

The electron capture in N^(5+)-H collisions imbedded in a Debye plasma is studied by using the two-center atomic orbital close-coupling method in the energy range from 1 keV/u to 200 keV/u.The atomic orbitals and electron binding energies of atomic states are calculated within the Debye-Huckel approximation of the screened Coulomb potential and used in atomic orbital close-coupling dynamics formalism to calculate the electron capture cross sections.The electron capture cross sections and the charge transfer spectral lines of N^(4+)(1s^(2)nl)for a number of representative screening parameter values are presented and discussed.It is found that the screening of Coulomb interactions affects the entire collision dynamics and the magnitude and energy behavior of state-selective cross sections.The changes in electron binding energies and capture cross sections when the interaction screening varies introduce dramatic changes in the radiation spectrum of N^(4+)(1s^(2)nl)capture states with respect to the unscreened interaction case.

A large-scale screening of metal-organic frameworks for iodine capture combining molecular simulation and machine learning

We performed large-scale molecular simulation to screen and identify metal-organic framework materials for gaseous iodine capture,as part of our ongoing effort in addressing management and handling issues of various radionuclides in the grand scheme of spent nuclear fuel reprocessing.Starting from the computation-ready experimental(CoRE)metal-organic frameworks(MOFs)database,grand canonical Monte Carlo simulation was employed to predict the iodine uptake values of the MOFs.A ranking list of MOFs based on their iodine uptake capabilities was generated,with the Top 10 candidates identified and their respective adsorption sites visualized.Subsequently,machine learning was used to establish structure-property relationships to correlate MOFs’various structural and chemical features with their corresponding performances in iodine capture,yielding interpretable common features and design rules for viable MOF adsorbents.The research strategy and framework of the present study could aid the development of high-performing MOF adsorbents for capture and recovery of radioactive iodine,and moreover,other volatile environmentally hazardous species.

Screening,preparation,and prototyping of metal–organic frameworks for adsorptive carbon capture under humid conditions

Adsorption-based carbon capture has been recognized as an attractive method for mitigating global warming.Metal–organic frameworks(MOFs)are promising candidate adsorbents for this purpose due to their high adsorption uptake and selectivity for carbon dioxide.However,in real-world applications,such as direct air capture,the presence of moisture in the feed gas may pose a grand challenge for CO_(2)adsorption in MOFs.This paper aims to address the issue of water–CO_(2)co-adsorption in MOFs and present screening criteria for selecting MOFs that preferentially adsorb CO_(2)under humid conditions.First,we uncover a comprehensive overview of CO_(2)–water co-adsorption characteristics of various MOFs.Then,the high-throughput screening methods are summarized.Both computational and experimental efforts have been dedicated to identify the promising MOFs for humid CO_(2)capture.According to the screening results and adsorption mechanism,the optimal preparation strategies are proposed tomodulate the effect of water on CO_(2)uptake in MOFs.Finally,current MOF-based CO_(2)capture prototypes are presented to evaluate their practical feasibility and performance.This work could offer valuable guidance for the development and application of MOFs for CO_(2)capture in the presence of water and inspire further research in this field.

屏幕录制中截图速率调整方法的比较研究

为解决屏幕录制时的音视频同步问题,文章对屏幕录制时的截图速率调整方法进行了实验和比较。其中,文章对基于截屏等待时间的调整策略进行了建模和比较分析,并根据实验结果得出了较小调整率能够使截屏采样率更加稳定,较大调整率和动态调整率截屏方法能迅速调整顿率偏差的结论。此外,文章提出了对屏幕录制时视频和音频同步的建议。

Influence of electron screening on electron capture rate under high density of stellar interior

The influence of electron screening on electron capture rate in strong screening is investigated, in which the Gamow-Teller resonance transition is considered and the matrix elements for the resonance transition are calculated on the basis of a shell model. The effect of electron screening on electron capture by 56Co is discussed. It is shown that the screening decreases evidently the capture rates in lower temperature and higher density. The effect of electron screening on other nuclear capture rates is estimated. The conclusion derived may influence the research for late stellar evolution and supernova explosion.

Gaussian modification of neutrino energy loss on strongly screening nuclides ^(55)Co and ^(56)Ni by electron capture in stellar interior

Gaussian modifications of the neutrino energy loss （NEL） by electron capture on the strongly screening nuclides 55Co and 56Ni are investigated. The results show that in strong electron screening （SES）, the NEL rates decrease without modifying the Gamow-Teller （G-T） resonance transition. For instance, the NEL rates of 55Co and 56Ni decrease more than two and three orders of magnitude for ρ7 = 5.86, T9 5, Ye = 0.47, △ = 6.3, respectively. In contrast, due to Gaussian modification, the NEL rates increase about two orders of magnitude in SES. Due to SES, the maximum values of the C-factor （in %） on NEL of 55Co, 56Ni are of the order of 99.80%, 99.56% at ρ7 = 5.86 Ye = 0.47 and 99.60%, 99.65% at ρ7 = 106 Ye = 0.43, respectively.

CCD立靶对暗弱高速飞行弹丸的捕获研究

研制了一种4×4m2立靶坐标测量系统.该系统采用了大功率半导体激光器主动照明、光学窄带滤光片提高信噪比、高速线阵CCD实时图像处理等关键技术,实现了对暗弱高速飞行弹丸的捕获和坐标测量.试验结果表明,该系统的捕获率达到90%.

基于Hook和轮询检测机制的屏幕共享技术

为了解决目前各种屏幕共享技术存在的诸如计算机资源使用率过高、捕获不全面等问题,设计了应用于Windows系统的基于Hook技术和轮询检测机制的屏幕共享方案,该方案利用Hook检测速度快、占用资源少和轮询机制检测全面的特点,可以在资源使用率较低的情况下,提高屏幕共享的全面性。实际测试表明,该方法占用的计算机资源较少,并且能够较全面地反映屏幕的变化。

便携式显微镜/远视镜实时观察和记录系统的低成本组建

目的:为轻便型视屏神经外科配备便携式显微镜/远视镜实时观察和记录系统。方法:系统由显像设备、成像设备和支架组成。显像设备为Dell便携式计算机;成像设备包括DFK-21AU04 USB CCD摄像头、Computar MLH-10×macro镜头和COPL-40-W同轴光灯头复合体;支架为改造的MA241102便携式气动弹簧摇臂式支架。通过视屏观察(15 cm)深瓶中的干豆、切开的新鲜石榴及成年SD大鼠活体颈总动脉分叉部;在视屏图像引导下阻断成年SD大鼠大脑中动脉。结果:Qy/Fx-0810-Mi/Ma便携式实时观察和记录系统小巧轻便、廉价实用,能够从不同角度观察手术野,工作距离超过54 cm,视屏图像清晰、逼真、有立体感且与实际操作同步。结论:可低成本组建适合轻便型视屏神经外科的便携式显微镜/远视镜实时观察和记录系统。

凹空细胞检测在宫颈癌前病变筛查中的应用及其与Hybrid Capture 2-HPV检测方法的比较

宫颈癌是发展中国家最常见的女性生殖系统恶性肿瘤,在发达国家,其发病率仅次于乳腺.高危型人乳头瘤病毒（HPV）感染与宫颈癌的关系已得到流行病学、分子生物学、临床研究的证实,其中以HPV16型所占比例最高.

高危型人乳头瘤状病毒检测与液基细胞学观察及其联合分析对宫颈癌筛查的意义

背景与目的:第二代杂交捕获(hybrid captureⅡ,HC-Ⅱ)人乳头状瘤病毒(human papillomavirus,HPV)检测及液基细胞学测试(liquid-based cytology test,LCT)方法已经成为目前宫颈癌筛查的两种主要方法,文献报道两种方法联合应用可提高宫颈癌筛查效率。选择经济有效的筛查手段来降低子宫颈癌的发病率越来越受到人们的关注,本研究拟对HC-ⅡHPV和LCT两种方法不同组合的筛查方案在宫颈癌筛查中的作用进行评价,以期指导宫颈癌筛查方案的选择。方法:采用HC-Ⅱ技术和LCT两种方法对2003年5月至2005年12月北京大学深圳医院宫颈癌中心就诊妇女共2471例进行了同步盲法检测。对阴道镜检查异常或可疑异常者行阴道镜下直接活检;对HPV阳性并且LCT≥未明确诊断意义的不典型鳞状上皮细胞(atypical squamous cells of undetetemined sign,ASCUS)或者虽HPV检测结果阴性,但LCT为低级别鳞状上皮内病变(low grade squamous intraepithelial lesion,LSIL)及以上病变患者,均经阴道镜下宫颈活组织检查,以病理结果作为最终诊断,评价不同组合的筛查方案在宫颈癌筛查中的价值。结果:本次筛查共取病理287例。病理结果证实该人群中宫颈癌6例,宫颈上皮内瘤变(cervi-cal intraepithelial neoplasia,CIN)Ⅲ级18例,CINⅡ级39例,CINⅠ级98例,其它(慢性宫颈炎和鳞状上皮化生)126例。高危型HPV阳性率为16.8%;LCT阳性率(≥ASCUS)为11.8%;HPV与LCT联合检测(平行试验-任意一项阳性)的阳性率为21.2%;HPV与LCT联合检测(系列试验-两项均阳性)的阳性率为7.4%。随宫颈病变级别升高,高危HPV感染率及LCT阳性率增加(P<0.005)。高危HPV对宫颈高级别病变的敏感性、特异性、准确性、阳性预测值、阴性预测值、阳性似然比和阴性似然比分别为98.4%,85.3%,85.6%,14.9%,100%,6.7和0.02;LCT以上各指标分别为92.1%,90.3%,90.3%,19.9%,100.0%,9.5和0.09;HPV与LCT联合检测(平行试验)的以上各指标分别为100.0%,80.8%,81.3%,12.0%,100%,5.2和0.0;HPV与LCT联合检测(系列试验)的以上各指标分别为90.5%,94.8%,94.7%,31.1%,99.7%,17.4和0.10。用于筛查宫颈高级别病变各筛查试验的受试者工作特征(receiver operating characteristic,ROC)曲线下面积分别为0.919、0.921、0.904、0.926,经Z检验认为各筛查试验筛查效率间无差异(P>0.05)。结论:HCⅡHPV和LCT检测是目前宫颈癌筛查有价值的方法。联合应用不能显著提高筛查效率,但会增加单次筛查成本。

基于TCP和UDP混合协议的远程控制软件的设计与实现

针对目前网络远程控制软件存在的数据传输问题,提出一种在Windows系统平台下运行的基于TCP和UDP混合协议的远程控制软件的设计思路与开发技术。使用柯达公司的ImgEdit控件对截屏后的图像文件进行了压缩,便于数据的传输;系统使用Winsock网络编程技术,基于C/S模式,Client端调用Winsock发送相关控制命令,Server端主要运用Winsock和API函数实现远程屏幕抓取、控制操作和数据传输等功能。实验结果表明,该方法能方便、快捷地实现远程计算机的控制以及数据的传输,从而为远程智能控制的发展提供了发展方向。

基于消息机制的实时屏幕共享技术

实时的屏幕共享技术广泛使用在远程控制中,但是目前大部分的屏幕传送是采用静态定时的方式,效果并不理想,特别是在实时性方面。本文介绍了一种结合了 Windows消息机制的屏幕共享技术,它采用了动态的消息触发机制,传送变化的部分图像,大大地改善了效果。

基于Mirror Driver的屏幕图像捕捉技术

目前各类非高依赖DirectDraw应用中屏幕捕捉技术存在效率低下、捕捉遗漏、光标丢失以及不够稳定等问题。为此,提出基于镜像显示驱动的屏幕图像捕捉方案。设计并实现内核驱动,通过捕捉鼠标光标移动路径中的关键点再现光标轨迹,并对捕获到的变化区域集进行优化合并。实验结果证明,该方案能快速稳定地捕捉屏幕上的变化区域图像,实现光标的移动捕捉。