检索结果-南通市图书馆

Ultraviolet extinction properties in the Milky Way

材料科学与工程（中英文版） 2009年第10期3卷 18-27页

作者： Ali Abdul sattar Jaber Al-Edhari Department of Physics College of Science Al- Muthanna University Al-Muthanna 66004 Iraq

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

PERFORMANCE COMPARISONS OF R, CUSUM AND EWMA CONTROL CHARTS FOR MONITORING THE PROCESS VARIABILITY TO APPROACH SIX-SIGMA QUALITY

PERFORMANCE COMPARISONS OF R, CUSUM AND EWMA CONTROL CHARTS ...

引用

2005年中国机械工程学会年会

作者： ABDUL sattar Jamali School of Management ＆ Economics

＜正＞This work is based on the performance comparison of Range （R）, CuSum and EWMA control charts for monitoring the process variability. When monitoring the process it is important to quickly detect increase and decrease in variability. If the variance of the process increases, it is possible that an increased number of units will be defective. Therefore, in this paper we consider only increase in the process variability. These three types of control charts are used to detect the changes in process parameters. Therefore, the object of this research work is to find out which of these three charts provides better performance （more efficient） in order to detect the changes in the increase of process standard deviation for Six-Sigma quality control. The Range （R）, CuSum and EWMA control charts were used to determine the average run length （ARL） to detect out of control condition. The ARL found by these three charts and was compared to each other. It was observed that the performance of the CuSum and EWMA control charts for monitoring the process variability were appreciably better than the performance of R-chart when small shifts of interest. The CuSum and EWMA control charts are more efficient to detect the small shifts in the process dispersion at the order of shift level below than 1.5. While, if the larger shifts are considered （shifts in the process dispersion more than1 .5）, the R-chart was the most effective.

关键词： six-sigma statistical process control cumulative sum exponentially weighted moving average average run length

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

甲氨喋呤干扰叶酸代谢诱导幼年小鼠星形胶质细胞凋亡

甲氨喋呤干扰叶酸代谢诱导幼年小鼠星形胶质细胞凋亡

引用

作者： FAHMIDA sattar 浙江大学

学位级别：硕士

氨甲喋呤(MTX),其结构与叶酸及二氢叶酸还原酶抑制剂类似。常用于治疗风湿、肿瘤、炎症和皮肤疾病等。近年来,甲氨蝶呤是治疗儿童急性淋巴细胞性白血病(ALL)的基础药物。它可引起明显幼龄儿童的急性、亚急性和慢性神经毒性。目前其确切... 详细信息

氨甲喋呤(MTX),其结构与叶酸及二氢叶酸还原酶抑制剂类似。常用于治疗风湿、肿瘤、炎症和皮肤疾病等。近年来,甲氨蝶呤是治疗儿童急性淋巴细胞性白血病(ALL)的基础药物。它可引起明显幼龄儿童的急性、亚急性和慢性神经毒性。目前其确切机制尚未阐明。本研究揭示了 MTX通过干扰叶酸代谢引起幼年小鼠中枢神经系统(CNS)星形胶质细胞凋亡的潜在机制。本实验采用SulforhodamineB(SRB)法检测细胞增殖,TUNEL细胞凋亡检测试剂盒和流式细胞仪分析细胞凋亡。GFAP,DHFR,PARP和pro-Caspase-3的表达以免疫印迹法进行检测。结果表明MTX对C6细胞和原代星形胶质细胞均具有明显增殖抑制作用,且呈浓度依赖性。MTX可导致小鼠脊髓与脑中星形胶质细胞标记物GFAP表达明显下调。另外,细胞内过表达DHFR或添加外源性叶酸可明显逆转MTX的毒性作用。综上,本研究阐明MTX通过干扰叶酸代谢可引起体内、体外星形胶质细胞凋亡,并提示了补充叶酸可能是减轻临床上由MTX导致的星状细胞毒性的新策略。

关键词： Methotrexate(MTX) Astrocytes Apoptosis Neurotoxicity Folate metabolism

来源：

同方学位论文库评论

在线全文

同方学位论文库

学校读者我要写书评

暂无评论

三体Leggett型非定域性能被测试吗?

引用

中国科学院大学学报（中英文） 2023年第3期40卷 297-302页

作者： KHAN Abdul sattar 杨马成乔从丰中国科学院大学物理科学学院北京100049 中国科学院大学真空物理重点实验室北京100049

Leggett不等式是对允许某些类型非定域性的二体关联的约束。对更多体的情况是否也可以得到这样的约束?我们对三体的情况找到了新的不等式,可以用来检验量子力学和非定域实在论之间的相容性。对某些测量装置,GHZ,W和任意三量子比特纯态... 详细信息

Leggett不等式是对允许某些类型非定域性的二体关联的约束。对更多体的情况是否也可以得到这样的约束?我们对三体的情况找到了新的不等式,可以用来检验量子力学和非定域实在论之间的相容性。对某些测量装置,GHZ,W和任意三量子比特纯态违背了不等式。我们的不等式比文献(arXiv:1111.4119v1)中已有的不等式强。这些实验上可实现的不等式能推广到n体,这可以更好地解释多体情况下的非定域关联,也可以应用在超越标准量子密钥分发方案的密码密钥分发。

关键词：多体非定域性三体Leggett模型非定域实在性

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Organic Molecules in the Interstellar Dust

引用

材料科学与工程（中英文版） 2010年第1期4卷 16-21页

作者： Ali Abdul sattar Jaber Al-Edhari Department of Physics College of Science Al- Muthanna University Al-Muthanna 66004 Iraq

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

The Effect of Instructing Cognitive and Metacognitive Strategies on the Academic Progress of Ilam Medical University Students

引用

Psychology Research 2011年第4期1卷 244-250页

作者： Amir Abdolhosseini sattar Keikhavani Kourosh Mohammadi Hasel Payame-Noor University Tehran Iran Medical Sciences of Ilam University Ilam Iran Tehran University Tehran Iran

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Assessment of biosafety implementation in clinical diagnostic laboratories in Pakistan during the COVID-19 pandemic

引用

Journal of Biosafety and Biosecurity 2022年第1期4卷 43-49页

作者： Samreen Sarwar Faheem Shahzad Ayesha Vajeeha Rimsha Munir Amina Yaqoob Aniqa Naeem Mamoona sattar Sheereen Gull Health Security Partners LahorePunjabPakistan Department of Immunology University of Health Sciences LahorePunjabPakistan Centre for Applied Molecular Biology University of the PunjabLahorePunjabPakistan Cancer Biology Lab Institute of Microbiology and Molecular GeneticsUniversity of the Punjaband Molecular GeneticistHormone LabLahorePunjabPakistan Center of Excellence in Molecular Biology University of the PunjabLahorePakistan Food and Meal Science Kristianstad UniversityKristianstadSweden Microbiological Engineering and Industrial Biotechnology Group College of ChemistryChemical Engineering and BiotechnologyDonghua UniversityShanghaiChina School of Biological Sciences University of the PunjabLahorePakistan

Laboratory diagnostic capacity is crucial for an optimal national response to a public health emergency such as the COVID-19 *** laboratory-acquired infections and the loss of critical human resources,especially during a public health emergency,requires laboratories to have a good biorisk management system in *** this study,we aimed to evaluate laboratory biosafety and biosecurity in Pakistan during the COVID-19 *** this cross-sectional study,a self-rated anonymous questionnaire was distributed to laboratory professionals(LPs)working in clinical diagnostic laboratories,including laboratories performing polymerase chain reaction(PCR)-based COVID-19 diagnostic testing in Punjab,Sindh,Khyber Pakhtunkhwa,and Gilgit-Baltistan provinces as well as Islamabad during March 2020 to April *** questionnaire assessed knowledge and perceptions of LPs,resource availability,and commitment by top management in these *** total,58.6%of LPs performing COVID-19 testing reported that their laboratory did not conduct a biorisk assessment before starting COVID-19 testing in their *** 31%of LPs were aware that COVID-19 testing could be performed at a biosafety level 2 laboratory,as per the World Health Organization interim biosafety guidelines.A sufficiently high percentage of LPs did not feel confident in their ability to handle COVID-19 samples(32.8%),spills(43.1%),or other accidents(32.8%).These findings demonstrate the need for effective biosafety program implementation,proper training,and establishing competency assessment *** findings also suggested that identifying and addressing gaps in existing biorisk management systems through sustainable interventions and preparing LPs for surge capacity is crucial to better address public health emergencies.

关键词： Biosafety Laboratory professionals COVID-19 pandemic

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Analysis of Unsteady Flow over Offshore Wind Turbines in Combination with Different types of Foundations

引用

Journal of Marine Science and Application 2017年第2期16卷 199-207页

作者： Israa Alesbe Moustafa Abdel-Maksoud sattar Aljabair Institute for Fluid Dynamics and Ship Theory (M8) Hamburg University of Technology (TUHH) D-21073 Hamburg Germany Department of Mechanical Engineering University of Technology Baghdad 10066 Iraq

Environmental effects have an important influence on Offshore Wind Turbine (OWT) power generation efficiency and the structural stability of such turbines. In this study, we use an in-house Boundary Element (BEM)-panMARE code-to simulate the unsteady flow behavior of a full OWT with various combinations of aerodynamic and hydrodynamic loads in the time domain. This code is implemented to simulate potential flows for different applications and is based on a three-dimensional first-order panel method. Three different OWT configurations consisting of a generic 5 MW NREL rotor with three different types of foundations (Monopile, Tripod, and Jacket) are investigated. These three configurations are analyzed using the RANSE solver which is carried out using ANSYS CFX for validating the corresponding results. The simulations are performed under the same environmental atmospheric wind shear and rotor angular velocity, and the wave properties are wave height of 4 m and wave period of 7.16 s. In the present work, wave environmental effects were investigated firstly for the two solvers, and good agreement is achieved. Moreover, pressure distribution in each OWT case is presented, including detailed information about local flow fields. The time history of the forces at inflow direction and its moments around the mudline at each OWT part are presented in a dimensionless form with respect to the mean value of the last three loads and the moment amplitudes obtained from the BEM code, where the contribution of rotor force is lower in the tripod case and higher in the jacket case and the calculated hydrodynamic load that effect on jacket foundation type is lower than other two cases.

关键词： panel method time domain offshore wind turbine RANSE solver boundary element method unsteady flow

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Determination of a novel ACE inhibitor in the presence of alkaline and oxidative degradation products using smart spectrophotometric and chemometric methods

引用

Journal of Pharmaceutical Analysis 2014年第2期4卷 132-143页

作者： Maha Abdel-Monem Hegazy Maya Shaaban Eissa Osama Ibrahim Abd El-sattar Mohamed Mohamed Abd El-Kawy Analytical Chemistry Department Faculty of PharmacyCairo UniversityCairoEgypt Analytical Chemistry Department Faculty of PharmacyEgyptian Russian UniversityCairoEgypt National Organization of Drug Control and Research GizaEgypt

Simple, accurate, sensitive and validated UV spectrophotometric and chemometric methods were developed for the determination of imidapril hydrochloride （IMD） in the presence of both its alkaline （AKN） and oxidative （OXI） degradation products and in its pharmaceutical formulation. Method A is the fourth derivative spectra （D4） which allows the determination of IMD in the presence of both AKN and OXD, in pure form and in tablets by measuring the peak amplitude at 243.0 nm. Methods B, C and D, manipulating ratio spectra, were also developed. Method B is the double divisor-ratio difference spectrophotometric one （DD-RD） by computing the difference between the amplitudes of IMD ratio spectra at 232 and 256.3 nm. Method C is the double divisor-first derivative of ratio spectra method （DD-DR1） at 243.2 nm, while method D is the mean centering of ratio spectra （MCR） at 288.0 nm. Methods A, B, C and D could successfully determine IMD in a concentration range of 4.0-32.0 mg/mL. Methods E and F are principal component regression （PCR） and partial least-squares （PLS）, respectively, for the simultaneous determination of IMD in the presence of both AKN and OXI, in pure form and in its tablets. The developed methods have the advantage of simultaneous determination of the cited components without any pre-treatment. The accuracy, precision and linearity ranges of the developed methods were determined. The results obtained were statistically compared with those of a reported HPLC method, and there was no significant difference between the proposed methods and the reported method regarding both accuracy and precision.

关键词： Double divisor-ratio difference Double divisor-ratio derivative Mean centering of ratio spectra Chemometry Imidapril hydrochloride

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

The Cyborg Entity in Gibson＇s Neuromancer： An Idealistic ＂Cyborg Manifesto？＂

引用

Journal of Literature and Art Studies 2015年第11期5卷 959-969页

作者： Sanyat sattar Abu Saleh Md. Raft Jahangirnagar University Dhaka Bangladesh Daffodil International University Dhaka Bangladesh

The idea of Cyborg initiates the blurring of frontiers between traditional gender roles in the post-modem era, transforming itself into a politicized entity. William Gibson＇s Neuromancer as an early introducer of the Cyborg characters tries to dissolve the boundaries through his female characters by balancing the power quota with the help of the non-gendered entity of the Cyborg. According to Donna Haraway, there will be a dawn of new cyborg era causing a gender role reversal. The objective of this paper is to find whether such role reversal is at all possible.

关键词： cyborg postmodem fiction infotopia posthuman cyberfeminism cyborg manifesto

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：