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Investigation of dimensionality in superconducting NbN thin film samples with different thicknesses and NbTiN meander nanowire samples by measuring the upper critical field

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Chinese Physics B 2020年第8期29卷 457-464页

作者： mudassar Nazir 杨晓燕田焕芳宋鹏涛王战相忠诚郭学仪金贻荣尤立星郑东宁 Institute of Physics and Beijing National Laboratory for Condensed Matter Physics Chinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100190China State Key Laboratory of Functional Materials for Informatics Shanghai Institute of Microsystem and Information Technology and the Center for Excellence in Superconducting ElectronicsChinese Academy of SciencesShanghai 200050China Songshan Lake Materials Laboratory Dongguan 523808China

We study superconducting properties of NbN thin film samples with different thicknesses and an ultra-thin NbTiN meander nanowire *** the ultra-thin samples,we found that the temperature dependence of upper critical field(Hc2)in parallel to surface orientation shows bending curvature close to critical temperature Tc,suggesting a two-dimensional(2D)nature of the *** 2D behavior is further supported by the angular dependence measurements of Hc2 for the thinnest *** temperature dependence of parallel upper critical field for the thick films could be described by a model based on the anisotropic Ginzburg-Landau ***,the results measured in the field perpendicular to the film surface orientation show a similar bending curvature but in a much narrow temperature region close to Tc for the ultra-thin *** suggest that this feature could be due to suppression of pair-breaking caused by local *** further propose the temperature dependence of perpendicular Hc2 as a measure of uniformity of superconducting ultra-thin *** the thick samples,we find that Hc2 shows maxima for both parallel and perpendicular *** Hc2 peak for the perpendicular orientation is believed to be due to the columnar structure formed during the growth of the thick *** presence of columnar structure is confirmed by transmission electron microscopy(TEM).In addition,we have measured the angular dependence of magneto-resistance,and the results are consistent with the Hc2 data.

关键词： NbN micro-bridges and NbTiN meander nanowire upper critical field low dimensionality anisotropic magneto-resistance

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Tocilizumab in severe COVID-19-A randomized,double-blind,placebo-controlled trial

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Infectious Medicine 2022年第2期1卷 88-94页

作者： Muhammad Irfan Malik Sardar Al Fareed Zafar Fabiha Qayyum Muna Malik Muhammad Sohaib Asghar Muhammad Junaid Tahir Ammarah Arshad Fatima Khalil Hafiza Shafia Naz mudassar Aslam Jodat Saleem Abdul Aziz Mustafa Usman Azhar Muhammad Naqash Zohaib Yousaf Postgraduate Medical Institute LahorePakistan Lahore General Hospital LahorePakistan Ameer-ud-Din Medical College LahorePakistan Dow University of Health Sciences-Ojha Campus KarachiPakistan Sheikh Zayed Medical College Rahim Yar KhanPakistan Hamad Medical Corporation DohaQatar

Background:The therapeutic effectiveness of interleukin-6 receptor inhibitor in critically ill hospitalized patients with coronavirus disease 2019(COVID-19)is ***:To evaluate the efficacy and safety of the outcome as recovery or death of tocilizumab for severe acute respiratory syndrome-coronavirus-2(SARS-CoV-2)infection,we conducted a randomized,double-blinded,placebo-controlled phase 2 trial in critically ill COVID-19 adult *** patients were randomly assigned in a 4:1 ratio to receive standard medical treatment plus the recommended dose of either tocilizumab or the placebo *** was *** primary outcome was the recovery or death after administration of tocilizumab or a placebo *** secondary outcomes were clinical recovery or worsening of the patients’symptoms and inflammatory markers and discharge from the ***:Of 190 patients included in this study,152 received tocilizumab,and 38 received a *** duration of hospital stay of the interventional group was 12.9±9.2,while the placebo group had a more extended hospital stay(15.6±8.8).The mortality ratio for the primary outcome,ie,mortality or recovery in the tocilizumab group was 17.8%;p=0.58 by log-rank test).The mortality ratio in the placebo group was 76.3%;p=0.32 by log-rank test).The inflammatory markers in the tocilizumab group significantly declined by day 16 compared to the placebo ***:The use of tocilizumab was associated with decreased mortality,earlier improvement of inflamma-tory markers,and reduced hospital stay in patients with severe COVID-19.

关键词： Inflammatory Infectious Immunosuppression COVID-19 Therapy Trial

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The Effects of a Backward Bifurcation on a Continuous Time Markov Chain Model for the Transmission Dynamics of Single Strain Dengue Virus

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Applied Mathematics 2013年第4期4卷 663-674页

作者： Adnan Khan Muhammad Hassan mudassar Imran Centre for Advanced Studies in Mathematics Lahore University of Management Sciences Lahore Pakistan

Global incidence of dengue, a vector-borne tropical disease, has seen a dramatic increase with several major outbreaks in the past few decades. We formulate and analyze a stochastic epidemic model for the transmission dynamics of a single strain of dengue virus. The stochastic model is constructed using a continuous time Markov chain (CTMC) and is based on an existing deterministic model that suggests the existence of a backward bifurcation for some values of the model parameters. The dynamics of the stochastic model are explored through numerical simulations in this region of bistability. The mean of each random variable is numerically estimated and these are compared to the dynamics of the deterministic model. It is observed that the stochastic model also predicts the co-existence of a locally asymptotically stable disease-free equilibrium along with a locally stable endemic equilibrium. This co-existence of equilibria is important from a public health perspective because it implies that dengue can persist in populations even if the value of the basic reproduction number is less than unity.

关键词： Epidemiology Dengue Fever Backward Bifurcation Stochastic Model

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<i>Conocephalum conicum</i>(L.) Dumort. (Snake Liverwort) Threatened in Bhaderwah (J &K) due to Environmental Shock

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American Journal of Plant Sciences 2011年第4期2卷 554-560页

作者： mudassar Iqbal Anima Langer Afroz Alam 不详

Paper includes information on population status of Conocephalum conicum collected from diverse habitats in Bhader-wah (J & K state). Taxon exhibits tremendous diversity in morphoanatomical details of various gametophytic charac-ters. Isozyme analysis was performed to find out whether variability in the taxon is only environmental or has genetic basis as well.

关键词： Bryophyta Liverwort Marchantiales Conocephalum Jammu & Kashmir

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Sinapic acid ameliorates D-galactosamine/lipopolysaccharideinduced fulminant hepatitis in rats:Role of nuclear factor erythroidrelated factor 2/heme oxygenase-1 pathways

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World Journal of Gastroenterology 2021年第7期27卷 592-608页

作者： Mushtaq Ahmad Ansari Mohammad Raish Yousef A Bin Jardan Ajaz Ahmad mudassar Shahid SheikhFayaz Ahmad Nazrul Haq Mohammad Rashid Khan Saleh A Bakheet Department of Pharmacology and Toxicology College of PharmacyKing Saud UniversityRiyadh 11451Saudi Arabia Department of Pharmaceutics College of PharmacyKing Saud UniversityRiyadh 11451Saudi Arabia Department of Clinical Pharmacy College of PharmacyKing Saud UniversityRiyadh 11451Saudi Arabia

BACKGROUND Sinapic acid(SA)has been shown to have various pharmacological properties such as antioxidant,antifibrotic,anti-inflammatory,and anticancer *** mechanism of action is dependent upon its ability to curb free radical production and protect against oxidative stress-induced tissue *** To study the hepatoprotective effects of SA against lipopolysaccharide(LPS)/Dgalactosamine(D-GalN)-induced acute liver failure(ALF)in *** Experimental ALF was induced with an intraperitoneal(i.p.)administration of 8μg LPS and 800 mg/kg D-GalN in normal *** was administered orally once daily starting 7 d before LPS/D-GalN *** Data showed that SA ameliorates acute liver dysfunction,decreases serum levels of alanine transaminase(ALT),and aspartate aminotransferase(AST),as well as malondialdehyde(MDA)and NO levels in ALF model ***,pretreatment with SA(20 mg/kg and 40 mg/kg)reduced nuclear factor kappalight-chain-enhancer of activated B cells(NF-κB)activation and levels of inflammatory cytokines(tumor necrosis factor-αand interleukin 6).Also,SA increased the activity of the nuclear factor erythroid-related factor 2/heme oxygenase-1(Nrf2/HO-1)signaling *** In conclusion,SA offers significant protection against LPS/D-GalN-induced ALF in rats by upregulating Nrf2/HO-1 and downregulating NF-κB.

关键词： Sinapic acid D-galactosamine/lipopolysaccharide Oxidative stress Fulminant hepatitis Antioxidant Nuclear factor erythroid-related factor 2/heme oxygenase-1 pathways

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深度学习神经网络的风电功率预测

深度学习神经网络的风电功率预测

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作者： mudassar Zia 华北电力大学(北京)

学位级别：硕士

由于环境影响,发电成本和快速增长的需求,电力系统中可再生能源（RES）的利用一直在迅速增长。因此,由于其在其他自然资源（如煤炭能源和其他类型的能源生产资源）上的优势,在当今和未来的研究中变得越来越重要。它无污染,占地面积少,... 详细信息

由于环境影响,发电成本和快速增长的需求,电力系统中可再生能源（RES）的利用一直在迅速增长。因此,由于其在其他自然资源（如煤炭能源和其他类型的能源生产资源）上的优势,在当今和未来的研究中变得越来越重要。它无污染,占地面积少,价格便宜,施工时间短。文献中有许多用于风电预测的技术,包括简单到复杂的技术（AR,ARIMA,模糊网络,SVM,贝叶斯,卡尔曼滤波器）。文献中也使用了单一到混合模型。为此,在短期风电预测的预测中也使用了机器学习。在本文中,我使用深度学习技术来预测长达数小时的短期风力发电。我没有使用Anwen的深度学习神经网络CNN[80],而是使用了三个深度学习神经网络和一个与CNN-LSTM组合的神经网络来比较它们的MSE,并查看哪个神经网络总体上效果最佳。在此之前,风能数据要经过数据预处理阶段,而不是馈送到主模型中的风能数据。除了 CNN模型图外,我还对LSTM,ConvLSTM,CNN-LSTM神经网络使用了简单的模型图。本文采用卷积神经网络（CNN）,长短期记忆（LSTM）和卷积LSTM（ConvLSTM）等深度学习神经网络进行风电功率预测。由于CNN具有处理大数据的优势。CNN以2D形式处理数据,并在图像视觉/处理领域具有优势。LSTM的RNN可以保留很长时间,这是它们的默认特性。ConvLSTM也是LSTM的一种,其中内部矩阵乘法被用于预测风能的卷积运算代替。本文还使用CNN-LSTM神经网络的组合来预测风能。2018年的历史风电数据取自Elia风力发电场,作为上述神经网络的输入。主模型图分为训练,验证和测试数据阶段,因此我们可以拥有用于测试数据以进行预测的最佳模型。输出结果显示了上述模型接下来20小时的真实功率和预测功率。CNN,ConvLSTM,.CNN+LSTM采用2D作为输入,而LSTM采用1D输入,因为它提供了更好的结果。结果表明,与ConvLSTM,CNN和CNN+LSTM相比,LSTM的性能更好。用作性能指标的均方误差和LSTM在所有模型中均具有较小的均方误差。得出结论如下,在几乎所有时间范围（短期,中期,长期预测）中,LSTM和ConvLSTM都更适合于时间序列预测,但是LSTM将超越文献中存在的其他时间序列模型。最重要的是,对于CNN,MSE 比文献中[80,82]的其他技术有所改进。将均方误差用作性能标准,并绘制实际值与预测值的比较值,并比较它们的MSE值,以查看哪个性能更好。Python用于编码和预测。

关键词： CNN 长短期记忆(LSTM) 卷积长短期记忆(ConvLSTM) 均方误差(MSE) 自适应矩估计(Adam)

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Flow of Generalized Burgers’ Fluid Induced by Sawtooth Pulses Stress with Quadratic Edges

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Journal of Applied Mathematics and Physics 2018年第6期6卷 1258-1277页

作者： Qamar Sultan Zaib Un Nisa mudassar Nazar Centre for Advanced Studies in Pure and Applied Mathematics Bahauddin Zakariya University Multan Pakistan School of Mathematical Sciences University of Science and Technology of China Hefei China

This paper presents the unsteady magnetohydrodynamic (MHD) flow of a generalized Burgers’ fluid between two side walls perpendicular to a plate. The flow is generated from rest at time ?induced by stress applied on the bottom plate. The stress is assumed to be like sawtooth pulses with quadratic edges. The solutions obtained by means of the Laplace, and Fourier cosine and sine transforms are presented as a sum between the corresponding Newtonian and non-Newtonian contributions. Graphs are sketched for various parameters of interest.

关键词： Generalized Burgers’ Fluid Sawtooth Pulses Stress Fourier Cosine and Sine Transforms

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Determinants of Voluntary Job Turnover (A Research Survey on Telecom Companies of Pakistan)

Determinants of Voluntary Job Turnover (A Research Survey on...

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作者： Muhammad mudassar Hassan 山东大学

学位级别：硕士

This research study has identified and examined four important factors related to personality of employees and organization having impact on the employees voluntary job turnover intention working in telecom companies of *** major objective of the study is to investigate the relationship of better career growth opportunities,ethical and moral leadership qualities,better compensation packages and organization support for its employees on the intention to leave the company or on job leaving intentions of *** order to examine and investigate this primary data was collected from 335 employees working in telecom *** personally administered questionnaire is used for the collection of *** order to examine and investigate the relationship of the explanatory factors with the dependent variable of the study linear regression analysis and Pearson Correlation analysis has been applied in *** results suggest that better career growth opportunities,moral and ethical leadership,organization support and help for employees and better compensation packages helps to reduces the employee turnover *** results of all these factors have negative impact on employee turnover *** a result of this,this research endeavors to fill the gap regarding human resource management practices to reduce turnover of telecom companies of *** sample size and limited variables is limitation in generalizing the results of this *** the end of the study,conclusions,policy implications and recommendations are given in detail.

关键词：企业人力管理员工离职意向领导素质

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基于WLAN的室内定位方法研究

基于WLAN的室内定位方法研究

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作者： mudassar Ali（幕达沙）北京邮电大学

学位级别：硕士

为了找到并解决室内定位系统中存在的问题,本文提出了不同的室内定位系统研究模型,这些模型既能减小误差,又能在Wi-Fi定位系统中实现较高精度的定位。本研究的主要目标是从安装在室内的所有接入点中选择最佳的四个接入点,然后利用所选...

为了找到并解决室内定位系统中存在的问题,本文提出了不同的室内定位系统研究模型,这些模型既能减小误差,又能在Wi-Fi定位系统中实现较高精度的定位。本研究的主要目标是从安装在室内的所有接入点中选择最佳的四个接入点,然后利用所选接入点的RSS值来实现设备的准确定位。尽管全球定位系统(GPS)可用于定位,但实际上GPS在室内环境中定位的效果较差,为此本研究使用反向传播(BP)网络算法来改善这种情况。虽然我们也可以通过激光或超声波找到准确的位置,但它们价格昂贵而且能耗较高。本文综述了一些现有的定位方案和研究。本研究的主要目的是实现在室内环境中的设备准确定位。为此,本研究使用了带数据集的指纹模型,该模型主要利用信号强度来实现定位。同时本文提出了一种反向传播(BP)网络算法,利用该BP算法可以高效地得到在很小误差范围内的目标的准确定位。

关键词：

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FLOW OF A VISCOUS FLUID DUE TO NON-COAXIAL ROTATIONS OF TWO DISKS

FLOW OF A VISCOUS FLUID DUE TO NON-COAXIAL ROTATIONS OF TWO ...

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The 1st Session of 2005 Workshop of Pakistan Academy of Sciences

作者： M.mudassar Gulzar Khalid Hanif College of Electrical and Mechanical Engineering Rawalpindi(National University of Sciences and TechnologyIslamabad)Pakistan Department of Mathematics Quaid-i-Azam University 45320IslamabadPakistan

The flow between two non-coaxially rotating disks has been *** velocity field is obtained between the two disks,which are initially at rest and then start rotating with respect to different axes of *** velocity field ... 详细信息

关键词： Unsteady viscous fluid non-coaxial rotations eigenfunction expansion method

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