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26篇 您的检索式:作者名="Muhammad Shabbir"
    题名 作者 年代 出处 被引量
1Theoretical investigation of sulfur defects on structural, electronic,and elastic properties of ZnSe semiconductor显示文摘The structural, electronic, and elastic properties of Zn Se1-xSx for the zinc blende structures have been studied by using the density functional theory. The calculations were performed using the plane wave pseudopotential method, as implemented in Quantum ESPRESSO. The exchange-correlation potential is treated with the local density approximation pz-LDA for these properties. Moreover, LDA+U approximation is employed to treat the 'd' orbital electrons properly. A comparative study of the band gap calculated within both LDA and LDA+U schemes is presented. The analysis of results show considerable improvement in the calculation of band gap. The inclusion of compositional disorder increases the values of all elastic constants. In this study, it is found that elastic constants C11, C12, and C44 are mainly influenced by the compositional disorder. The obtained results are in good agreement with literature.Muhammad Zafar Shabbir Ahmed M.Shakil M.A.Choudhary K.Mahmood 2015Chinese Physics B2015,24,7:2
2Homozygosity mapping of a consanguineous Pakistani family affected with oculocutaneous albinism to Tyrosinase gene显示文摘Dear Sir,Iam Haiba Kaul,from the Department of Biochemistry,University of Health Sciences,Lahore,Pakistan.I write to present a study of oculocutaneous albinism(OCA)in consanguineous Pakistani families.OCA is a genetic defect of melanin biosynthesis that mainly affects eyes,skin and hair.It is a congenital condition andMuhammad Shakil Muhammad Ikram Ullah Shabbir Hussain Sabika Firasat Saqib Mahmood Haiba Kaul 2016International Journal of Ophthalmology(English edition)2016,9,5:2
3Spatial variance and assessment of nitrogen dioxide pollution in major cities of Pakistan along N5-Highway显示文摘This paper discusses the findings of the first car MAX-DOAS(multi-axis differential optical absorption spectroscopy) field campaign(300 km long) along the National Highway-05(N5-Highway) of Pakistan conducted on 13 and 14 November, 2012. The main objective of the field campaign was to assess the spatial distribution of tropospheric nitrogen dioxide(NO_2)columns and corresponding concentrations along the N5-Highway from Islamabad to Lahore.Source identification of NO_2 revealed that the concentrations were higher within major cities along the highway. The highest NO_2 vertical column densities(NO_2VCDs) were found around two major cities of Rawalpindi and Lahore. This study also presents a comparison of NO_2 VCDs measured by the ozone monitoring instrument(OMI) and car MAX-DOAS observations. The comparison revealed similar spatial distribution of the NO_2 columns with both car MAX-DOAS and satellite observations, but the car MAX-DOAS observations show much more spatial details. Maximum NO_2 VCD retrieved from car MAX-DOAS observations was up to an order of magnitude larger than the OMI observations in urban areas.Yasir Shabbir Muhammad Fahim Khokhar Reza Shaiganfar Thomas Wagner 2016Journal of Environmental Sciences2016,28,5:1
4A new auxiliary information based cumulative sum median control chart for location monitoring显示文摘Control charts are commonly used tools in statistical process control for the detection of shifts in process parameters. Shewhart-type charts are efficient for large shift values, whereas cumulative sum(CUSUM) charts are effective in detecting medium and small shifts. Control chart use commonly assumes that data are free of outliers and parameters are known or correctly estimated based on an in-control process. In practice, these assumptions are not often true because some processes occasionally have outliers. Monitoring the location parameter is usually based on mean charts, which are seriously affected by violations of these assumptions. In this paper we propose several CUSUM median control charts based on auxiliary variables, and offer comparisons with their corresponding mean control charts. To monitor the location parameter, we examined the performance of mean and median control charts in the presence and absence of outliers. Both symmetric and non-symmetric processes were studied to examine the properties of the proposed control charts to monitor the location parameter using CUSUM control charts. We used different run length measures to study in-control and out-of-control performances of CUSUM charts. Results revealed that our proposed control charts perform much better than the traditional charts in the presence of outliers. A real application of our study was provided using data on concrete compressive strength as it relates to the quality of cement manufacturing.Shahid HUSSAIN Li-xin SONG Shabbir AHMAD Muhammad RIAZ 2019Frontiers of Information Technology & Electronic Engineering2019,20,4:1
5Zingiber officinale ameliorates allergic asthma via suppression of Th2-mediated immune response显示文摘Asad Mahmood Khan Muhammad Shahzad M. B. Raza Asim Muhammad Imran Arham Shabbir 2014Pharmaceutical Biology2014,,:1
6Genetic analysis of peste des petits ruminants virus from Pakistan 显示文摘Anees M Shabbir M Z Muhammad K 2013BMC Vet Res2013,9,1:1
7Relationship Between Customer Satisfaction andService Quality of Islamic Banks显示文摘Muhammad Naeem Akhtar Ahmed Imran Hunjra Syed Waqar Akbar Kashif-Ur-Rehman and Ghulam Shabbir Khan Niazi 0,,03:1
8Environmental Kuznets Curve hypothesis in Pakistan: Cointegration and Granger causality显示文摘Muhammad Shahbaz Hooi Hooi Lean Muhammad Shahbaz Shabbir 2012Renewable and Sustainable Energy Reviews2012,,5:1
9Miscibility studies of PVC/Aramid blends显示文摘Saima Shabbir Sonia Zulfiqar Muhammad Ishaq 2008Colloid Polym Sci2008,286,:1
10Effect of financial development on agricultural growth in Pakistan显示文摘Shahbaz Muhammad Shabbir Muhammad Shahbaz Butt Muhammad Sabihuddin 2013International Journal of Social Economics2013,40,8:1
11Density functional theory study of structural,electronic,and thermal properties of Pt,Pd,Rh,Ir,Os and PtPdX(X=Ir,Os,and Rh)alloys显示文摘The structural, electronic, mechanical, and thermal properties of Pt, Pd, Rh, Ir, Os metals and their alloys Pt Pd X(X= Ir, Os and Rh) are studied systematically using ab initio density functional theory. The groundstate properties such as lattice constant and bulk modulus are calculated to find the equilibrium atomic position for stable alloys. The electronic band structure and density of states are calculated to study the electronic behavior of metals on making their alloys. The electronic properties substantiate the metallic behavior for all studied materials. The firstprinciples density functional perturbation theory as implemented in quasi-harmonic approximation is used for the calculations of thermal properties.We have calculated the thermal properties such as the Debye temperature, vibrational energy, entropy and constant-volume specific heat. The calculated properties are compared with the previously reported experimental and theoretical data for metals and are found to be in good agreement. Calculated results for alloys could not be compared because there is no data available in the literature with such alloy composition.Shabbir Ahmed Muhammad Zafar M Shakilt M A Choudhary 2016Chinese Physics B2016,25,3:1
12Miscibility studies of PVC/aramid blends显示文摘Saima Shabbir Sonia Zulfiqar Muhammad Ishaq 2008Colloid Polym Sci2008,286,:1
13First-principles calculations of structural, electronic, and thermodynamic properties of ZnO_(1-x)S_x alloys显示文摘In this study the pseudo-potential method is used to investigate the structural, electronic, and thermodynamic properties of ZnO1-xSx semiconductor materials. The results show that the electronic properties are found to be improved when calculated by using LDA +U functional as compared with local density approximation(LDA). At various concentrations the ground-state properties are determined for bulk materials ZnO, ZnS, and their tertiary alloys in cubic zinc-blende phase.From the results, a minor difference is observed between the lattice parameters from Vegard's law and other calculated results, which may be due to the large mismatch between lattice parameters of binary compounds ZnO and ZnS. A small deviation in the bulk modulus from linear concentration dependence is also observed for each of these alloys. The thermodynamic properties, including the phonon contribution to Helmholtz free energy △F, phonon contribution to internal energy△E, and specific heat at constant-volume CV, are calculated within quasi-harmonic approximation based on the calculated phonon dispersion relations.Muhammad Zafar Shabbir Ahmed M.Shakil M.A.Choudhary 2014Chinese Physics B2014,23,10:0
14Regioselective electrochemical radical cascade cyclization of internal alkynes to selenated and trifluoromethylated dihydropyran显示文摘Dihydropyran(DHP)compounds are not only found in natural products and bioactive molecules,but also serve as important precursors in organic synthesis.Nonetheless,traditional methods for the construction of such compounds are usually limited to disubstituted DHPs.To address this synthetic challenge,reported here is an efficient electrochemical strategy toward the selenated and trifluoromethylated DHP compounds.The reaction proceeded smoothly under mild electrolysis conditions.The broad substrate scope(>50 examples)and scalable synthesis demonstrated the complexity-building potential of the strategy.Initial mechanistic studies reveal that cyclization may involve a radical process.This protocol may promote the further development of diversified synthesis of multi-substituted dihydropyran.Mingming Yu Tiantian Huang Lin Zhang Muhammad Shabbir Yuhan Gao Yi-Hung Chen Hong Yi Aiwen Lei 2023Science China Chemistry2023,66,11:0
15Sero-Epidemiological Survey of Crimean-Congo Hemorrhagic Fever among the Human Population of the Punjab Province in Pakistan显示文摘Dear Editor,Crimean-Congo hemorrhagic fever(CCHF),caused by the CCHF virus(CCHFV),is a tick-borne zoonotic infection characterized by myalgia,high-grade fever(>38℃),headache,nausea,bleeding from the body cavities,and in 10%–50%of cases,results in death(Swanepoel et al.1989).As CCHFV belongs to the Nairoviridae family,the virus can be transmitted to humans through the bite of infected ticks or by contact with the tissues or blood of infected animals(Bente et al.2013).Muhammad Furqan Shahid Muhammad Zubair Shabbir Kamran Ashraf Muzaffar Ali Saima Yaqub Aziz Ul-Rahman Nageen Sardar Nadia Mukhtar Zarfishan Tahir Tahir Yaqub 2020Virologica Sinica2020,35,4:0
16Status of Muslim Immigrants' Children With Learning Difficulties in Vienna显示文摘M. Naeem Mohsin Muhammad Shabbir Wizra Saeed M. Saleem Mohsin 2013US-China Education Review(B)2013,3,5:0
17A Critique Upon Animated Movie Beauty and the Beast With Perspectives to Gender Discrimination显示文摘This study gives an essential analysis of Disney animated movie and degree production of beauty and the beast,mainly of the heroine,Belle,inside a greater massive and short historiography of the fairy tale.Its miles claimed that Disneys model relocates the heroic cognizance from Belle(beauty)to beast,at the same time as additionally narrating a retort to feminism that entails compressing feminist ideology into conventions of popular eroticism.This current and dynamic research investigates about the animated movies gender equality and gender stereotype with reference to Belle,a female protagonist of movie.Movie was examined by feminist elements as it dealt with gender equality and role of female in movie.As an outcome,researcher can determine that this animated film portrays feminist elements by portraying the character of Bella in movie.The author embraced the explorative and analytical framework based on qualitative research approach by the application of feminist theory for the analysis of western animated movie Beauty and the Beast.The findings of study have shown the portrayal of heroine(Belle)as a symbol of feminism shown as a sensible girl who demands situation conventional gender roles but the film also reinforces gender stereotypes via man or woman.It is important to recognize that movie reinforces stereotypes and work to be done to create feminism.By sum up we come to know that the movie is the representation of female ability,individualism,liberal feminism,and gender stereotypes,which promotes equality and feminism through western kidsliterature.Anum Shabbir Muhammad Arfan Lodhi Quratulain Arshad 2023US-China Education Review(A)2023,13,5:0
18Economic outlook of rice crops in Pakistan:a time series analysis (1970-2015)显示文摘Background:The basic objective of this study was to examine the relationship between the rice output,its production area,water availability,and agricultural gross domestic product(GDP)of Pakistan.Annual time series data for 1970–2015 were collected from the National Food Security and Research,Economic Survey of Pakistan,and Pakistan Bureau of Statistics(various publications).Methods:Rice crop data were analyzed using the ordinary least square method and the augmented Dickey–Fuller test.Were interpreted using the Johansen cointegration test.Results:Our study revealed the existence of a long-standing relationship between rice output,its production area,and water availability with the agricultural GDP of Pakistan.Regression results indicate that rice output and cultivated area have a significant and positive relationship with agricultural GDP,while water availability has a negative relationship.Conclusions:The study suggests that the government of Pakistan should design new policies and funding schemes for developing and improving water availability.Abdul Rehman Luan Jingdong Abbas Ali Chandio Muhammad Shabbir Imran Hussain 2017Financial Innovation2017,3,1:0
19Overview of Strain Characterization in Relation to Serological and Molecular Detection of Citrus tristeza Closterovirus显示文摘Tristeza is a devastating viral disease in all the citrus growing countries throughout the world and has killed millions of citrus trees in severely affected orchards.The citrus species grafted on sour orange rootstock are affected by this disease.Predominantly,the sweet orange,grapefruit and lime trees grafted on sour orange exhibit severe symptoms like quick decline,vein clearing,pin holing,bark scaling and degeneration leading to variable symptoms.Symptomatic expression of Citrus tristeza virus(CTV)in different hosts has been attributed to virus isolates which are from severe to mild.Different serological and molecular assays have been deployed to differentiate the strains of CTV.Citrus tristeza virus is diversified towards its strains on the basis of biological,serological and molecular characterization.Phenotypic expression is due to genetic alteration and different molecular basis have now been adopted for strain differentiation.This review will give a brief idea about the different CTV isolates,their characterization based on nucleic acid and serological assays.Different methods along with salient features for strain characterization has also been reviewed.This review will also open the new aspects towards formulation of management strategies through different detection techniques.Yasir Iftikhar Mazhar Abbas Mustansar Mubeen Muhammad Zafar-ul-Hye Faheema Bakhtawar Sonum Bashir Ashara Sajid Muhammad Asif Shabbir 2021Phyton-International Journal of Experimental Botany2021,90,4:0
20Assessment of Biochemical and Antioxidative Status in Patients Suffering from Dengue Fever显示文摘A multi-centred study was designed to collect dengue epidemiologic data from government and registered private hospitals/clinics and maintained archive of frozen specimens in bio-bank to be used for future dengue epidemic control program, and assess the epidemiology of dengue fever(DF) by evaluating biochemical and oxidative status of patients. ELISA Ig M antibodies test was done to confirm DF. From August 2010 to December 2011, 101 confirmed blood samples of DF patients referred to pathology lab of Jinnah Hospital Lahore were subjected to the epidemiologic assessment by evaluating the biochemical and physiological indices and alterations of circulating antioxidants. Clinical features of DF patients and effect of fever on blood components and serum proteins of liver were recorded. The hospital stay in DF, dengue hemorrhagic fever(DHF) and dengue shock syndrome(DSS) showed significant difference. Significant increases in serum alanine amino transferase(ALT)(P=0.000), aspartate amino transferase(AST)(P=0.000), alkaline phosphatase(ALP)(P=0.000), malondialdehyde(MDA) along with significant decreases in total protein(TP)(P=0.000), reduced glutathione(GSH)(P=0.000), superoxide dismutase(SOD), catalase(CAT)(P=0.000), and sialic acid contents(P=0.016) were observed. A positive correlation existed between bound sialic acid levels, liver enzymes and circulating antioxidants(r=0.656, P=0.016). In the present study, alterations of circulating antioxidants in DF suggest that DF might be a metabolic response to an acute, self-limiting tropical viral infection, and a consequence of the viral inflammatory process.Mahmood Rasool Arif Malik Khalid Mahmud Khan Muhammad Saeed Qureshi Beenish Shabbir Sara Zahid Muhammad Asif Abdul Manan Sana Rashid Saima Rubab Khan Hafiz Muhammad Arsalan Rabail Alam Mahwish Arooj Mahmood Husain Qazi Adeel Gulzar Ahmed Chaudhary Adel Mohammed Abuzenadah Mohammed Hussain Al-Qahtani Sajjad Karim 2015Journal of Huazhong University of Science and Technology(Medical Sciences)2015,35,3:0
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