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First-principles calculations of nitrogen-doped antimony triselenide： A prospective material for solar cells and infrared optoelectronic devices

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Frontiers of physics 2018年第3期13卷 129-140页

作者： Sajid-ur-Rehman Faheem K. butt Chuanbo Li Bakhtiar U1 Haq Zeeshan Tariq F. Aleem State Key Laboratory on Integrated Optoelectronics Institute of Semiconductors Chinese Academy of Sciences College of Materials Science and Opto-Electronic Technology University of Chinese Academy of Sciences Beijing 100083 China University of Chinese Academy of Sciences Beijing 100049 China Department of Physics Division of Science and Technology University of Education College Road Township Lahore 54770 Pakistan Physik-Department ECS Technische Universitat Miinchen James-Franck-Str. 1 D-85748 Garching Germany School of Science Minzu University of China Beijing 100081 China Advanced Functional Materials & Optoelectronics Laboratory (AFMOL) Department of Physics Faculty of Science King Khalid University P.O. Box 9004 Abha Saudi Arabia Research Center for Advanced Materials Science (RCAMS) King Khalid University Abha 61413 P.O. Box 9004 Saudi Arabia Department of Physics The University of Lahore l-Kin Raiwind Road Lahore 53700 Pakistan

This study is focused on calculation of the electronic structure and optical properties of non-metal doped Sb2Se3 using the first-principles method. One and two N atoms are introduced to Sb and Se sites in a Sb2Se3 crystal. When one and two N atoms are introduced into the Sb2Se3 lattice at Sb sites, the electronic structure shows that the doping significantly modifies the bandgap of Sb2Se3 from 1.11 eV to 0.787 and 0.685 eV, respectively. When N atoms are introduced to Se sites, the material shows a metallic behavior. The static dielectric constants el（0） for Sb16Se24, SblsN1Se24, Sb14N2Se24, Sb16Se23N1, and Sb16Se22N2 are 14.84, 15.54, 15.02, 18.9, and 39.29, respectively. The calculated values of the refractive index n（0） for Sb16Se24, SblsN1Se24, Sb14N2Se24, Sb16Se23N1, and Sb16Se22N2 are 3.83, 3.92, 3.86, 4.33, and 6.21, respectively. The optical absorbance and optical conductivity curves of the crystal for N-doping at Sb sites show a significant redshift towards the short-wave infrared spectral region as compared to N-doping at Se sites. The modulation of the static refractive index and static dielectric constant is mainly dependent on the doping level. The optical properties and bandgap narrowing effect suggest that the N-doped Sb2Se3is a promising new semiconductor and can be a replacement for GaSb due to its very similar bandgap and low cost.

关键词： Sb2Se3 infrared optical properties solar cells optoelectronic devices

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Dominant ferromagnetic coupling over antiferromagnetic in Ni doped ZnO： First-principles calculations

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Frontiers of physics 2016年第1期11卷 121-127页

作者： Bakhtiar UI Haq Rashid Ahmed Galila Abdellatif Amiruddin Shaari Faheem K. butt Mohammed Benali Kanoun Souraya Goumri-Said Department of Physics Faculty of Science UniversitiTeknologi Malaysia UTM Skudai Johor81310 Malaysia Department of Physics Sungkyunkwan University Suwon 44 0-746 Korea Physik-Department ECS Technische Universitat Miinchen James-Franck-Straβe 1 85748 Garching Germany Department of Physics The University of Lahore 1-KM Defence Road Lahore Pakistan Department of Physics Faculty of Science Cairo University Giza Egypt physics Department College of Science AlFaisal University P.O. Box 50927 Riyadh 11533 Saudi Arabia

The low magnetic moment （MM） in diluted magnetic semiconductors （DMS） at low impurity doping levels has triggered considerable research into condensed magnetic semiconductors （CMS）.This work reports an ab-initio investigation of the electronic structures and magnetic properties of ZnO in a zinc-blende （ZB） structure doped with nickel ions. Ni-doped ZnO-based DMS and CMS exhibit a dominance of ferromagnetic coupling over antiferromagnetic. A robust increase in the magnetization has been observed as a function of Ni impurity levels. This material favors short-range magnetic interactions at the ground state, suggesting that the observed ferromagnetism is defined by the double exchange mechanism. The spin-polarized density of states （DOS） of Ni-doped ZnO characterizes it as half-metallic with a considerable energy gap for up-spin components and as metallic for-down spins. Half metallic Ni：ZnO based magnetic semiconductors with high magnetization are expected to have potential applications in spintronics.

关键词： ZnO diluted magnetic semiconductors ab-initio calculations electronic structure,magnetic properties

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Management of humeral fracture nonunion in severe osteoporosis by a combination of locking plating and intramedullary fibular grafting

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Chinese Journal of Traumatology 2016年第5期19卷 298-301页

作者： Shabir Ahmed Dhar Mohammed Farooq butt Tahir Ahmed Dar Reyaz Ahmed Dar Zameer Ali SKIMS MC Bemina Srinagar Kashmir Srinagar 190001 India

肱骨在不属于工会一严重地如果破裂是横向的， osteoporotic 骨头特别是一个可能的事件。如此的联合的管理是挑战。当骨头失败领先，大多数常规固定方法是不大可能的成功在骨质疏松症植入失败。当外皮的厚度更严重地被影响时，挑战进一... 详细信息

肱骨在不属于工会一严重地如果破裂是横向的， osteoporotic 骨头特别是一个可能的事件。如此的联合的管理是挑战。当骨头失败领先，大多数常规固定方法是不大可能的成功在骨质疏松症植入失败。当外皮的厚度更严重地被影响时，挑战进一步在严重骨质疏松症被加重。我们在 5 种情况中与一个锁住的盘子使用了一根 intramedullary 腓骨的联合。当骨头力量被扩充，板撤退多半是更少，结果证明它可以是处于如此的状况的好联合。

关键词：骨质疏松症骨头盘子肱骨断裂, ununited

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Surface-engineered liposomes for dual-drug delivery targeting strategy against methicillin-resistant Staphylococcus aureus(MRSA)

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Asian Journal of Pharmaceutical Sciences 2022年第1期17卷 102-119页

作者： Nur Najihah Izzati Mat Rani Xiang Yi Chen Zahraa M.Al-Zubaidi Hanisah Azhari Tzar Mohd Nizam Khaitir Pei Yuen Ng Fhataheya Buang Geok Chin Tan Yin Ping Wong Mazlina Mohd Said Adeel Masood butt Azmy A.Hamid Mohd Cairul Iqbal Mohd Amin Centre for Drug Delivery Technology Faculty of PharmacyUniversiti Kebangsaan MalaysiaKuala Lumpur 50300Malaysia Faculty of Pharmacy and Health Sciences University Kuala Lumpur Royal College of Medicine Perak No.3Perak 30450Malaysia Department of Medical Microbiology&Immunology Faculty of MedicineUniversiti Kebangsaan MalaysiaKuala Lumpur 56000Malaysia Drug and Herbal Research Center Faculty of PharmacyUniversiti Kebangsaan MalaysiaKuala Lumpur 50300Malaysia Reading School of Pharmacy University of ReadingReading RG66ADUnited Kingdom Department of Pathology Faculty of MedicineUniversiti Kebangsaan MalaysiaKuala Lumpur 56000Malaysia Institute of Pharmaceutical Sciences University of Veterinary and Animal SciencesLahore 54000Pakistan XORIX Sdn Bhd Dungun Terengganu 23000Malaysia

This study focused on the encapsulation of vancomycin(VAN) into liposomes coated with a red blood cell membrane with a targeting ligand, daptomycin–polyethylene glycol–1,2-distearoyl-sn-glycero-3-phosphoethanolamine, formed by conjugation of DAPT and Nhydroxysuccinimidyl-polyethylene glycol-1,*** formulation is capable of providing controlled and targeted drug delivery to the bacterial cytoplasm. We performed MALDI-TOF, NMR and FTIR analyses to confirm the conjugation of the targeting ligand via the formation of amide bonds. Approximately 45% of VAN could be loaded into the aqueous cores, whereas 90% DAPT was detected using UV–vis spectrophotometry. In comparison to free drugs, the formulations controlled the release of drugs for > 72 h. Additionally, as demonstrated using CLSM and flow cytometry, the resulting formulation was capable of evading detection by macrophage cells. In comparison to free drugs, red blood cell membrane–DAPT–VAN liposomes, DAPT liposomes, and VAN liposomes reduced the MIC and significantly increased bacterial permeability, resulting in > 80% bacterial death within 4 h. Cytotoxicity tests were performed in vitro and in vivo on mammalian cells,in addition to hemolytic activity tests in human erythrocytes, wherein drugs loaded into the liposomes and RBCDVL exhibited low toxicity. Thus, the findings of this study provide insight about a dual antibiotic targeting strategy that utilizes liposomes and red blood cell membranes to deliver targeted drugs against MRSA.

关键词： Erythrocyte Dual drug delivery Liposome Methicillin-resistant staphylococcus aureus Vancomycin Daptomycin

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Sequential maximum androgen blockade(MAB) in minimally symptomatic prostate cancer progressing after initial MAB: two case reports

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Cancer Biology & Medicine 2014年第4期11卷 277-280页

作者： Mohan Hingorani Sanjay Dixit Fahim Bashir Mohammad butt Simon Hawkyard Richard Khafagy Andrew Robertson Department of Clinical Oncology Castle Hill Hospital Department of Urology Scarborough General Hospital

The management of castrate-resistant prostate cancer progressing after maximum androgen blockade(MAB) has evolved in the last decade with the development of several novel therapeutic options. However, the initial therapeutic strategy in these patients usually involves withdrawal of anti-androgen that can be associated with biochemical response in approximately 20% of patients. Notably, we have observed evidence of sustained biochemical response in two patients following secondand third-line MAB using rechallenge schedule of previously administered anti-androgen after latent interval. The possibility of response following sequential MAB using the same anti-androgen agent has not yet been reported.

关键词：抗雄激素前列腺癌 MAB 案例症状治疗方案生化反应时间表

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Biotechnological leap in biopharmaceuticals:Current status and challenges ahead

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Journal of Coastal Life Medicine 2017年第1期5卷 36-46页

作者： Tazeen Iftikhar butt Muhammad Shoaib Amjad Tatheer Fatima butt Wasi Haider butt Kainat Fatima Malik Sidra Sabir Department of Biotechnology Women University of Azad Jammu&KashmirBaghPakistan Department of Botany Women University of Azad Jammu&KashmirBaghPakistan Department of Botany Pir Mehr Ali Shah Arid Agriculture UniversityRawalpindiPakistan Department of Medicine Fatima Jinnah Medical UniversityLahorePakistan Department of Computer Engineering National University of Sciences and TechnologyIslamabadPakistan Department of Plant Science Quaid-i-Azam UniversityIslamabadPakistan

Fermentation based vaccine production system is replaced by edible vaccine technology. Plant derived vaccines are produced by using transgenic plants which have immunogenic properties. For combating infectious diseases especially in developing countries there is a practical need of new technology to produce and deliver inexpensive vaccines. We have best option of plant derived edible vaccines. There are many benefits of plant derived vaccinesi.e. they are cheaper, simple and easy to administer, more stable, extra versatile, with more acceptance power and highly efficient. Some plant derived vaccines are under clinical trials to use commercially and many are under research. This paper reviews the current status and future of this technology.

关键词： Plant-based vaccine Recombinant protein Transgenic plant Broad immune protection

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Interleukin-28 and hepatitis C virus genotype-4:Treatment-induced clearance and liver fibrosis

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World Journal of Gastroenterology 2012年第47期18卷 7003-7008页

作者： Moutaz Derbala Nasser Rizk Fatima Shebl Saad Alkaabi Nazeeh Eldweik Anil John Manik Sharma Rafie Yaqoob Muneera Almohanadi Mohammed butt Khaled Alejji Department of Gastroenterology and Hepatology Hamad HospitalDoha 3050Qatar Department of Gastroenterology and Hepatology Weill Cornell Medical CollegeDoha 3050Qatar Department of Health Sciences Qatar UniversityDoha 2713Qatar Chronic Disease Epidemiology Division Yale School of Public HealthNew HavenCT 06520United States

AIM:To investigate the association between interleukin-28B(IL28B) genotype and response to treatment and hepatic fibrosis in patients with hepatitis C virus(HCV) genotype ***:Two hundred and one HCV-genotype 4 patients were *** patients were treated with Peginterferon alph2a/Ribavirin for 48 *** of treatment response(ETR) was defined as loss of detectable serum HCV RNA at the end of *** viral response(SVR) was defined as loss of detectable serum HCV RNA at the end of 24 wk follow *** of IL28B rs12979860 was performed using the TaqMan *** used logistic regression to estimate the adjusted odds ratio(aOR) and 95%***:The study included 201 HCV-genotype 4 *** majority of patients were men(89.6%),with a median age of 47 years,inter-quartile range(40-51).Approximately 62.5% of patients had ETR,and 49.6% had *** who achieved SVR were more likely to be younger(χ 2 = 4.91,P = 0.027),and less likely to have fibrosis(χ 2 = 15.54,P < 0.0001),or inflammation(χ 2 = 7.58,P = 0.006).The genotype distribution of rs12979860 was 36.2%,49.0% and 14.8% for genotypes CC,CT,and TT,*** these participants,rs12979860 genotype distribution did not differ by gender(P = 0.466),pretreatment viral load(P = 0.600),inflammation(P = 0.435),or fibrosis(P = 0.291).The frequencies of IL28B rs12979860 genotypes were TT(14.8%),CT(49.0%),and CC(36.2%).Compared to rs12979860 genotype TT,aORs(95%CI) for ETR and SVR were:CC genotype,[17.55(5.34-57.69) and 5.92(2.09-16.76),respectively];CT genotype,[5.15(1.80-14.78) and 2.48(0.94-6.52),respectively].In the current study,the patients who did not achieve ETR or SVR had a lower prevalence of rs12979860 CC(17.4% and 23.3%,respectively) than individuals who had ETR or SVR(47.9% and 47.2%,respectively).Individuals with rs12979860 CC genotype had approximately 6 times the odds of SVR compared to individuals with TT genotype(aOR = 5.92;95%CI:2.09-16.76).Similarly,patients with CT

关键词：丙型肝炎病毒基因型频率肝纤维化白细胞介素治疗 logistic 间隙 C型

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Numerical Treatment for Stochastic Computer Virus Model

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Computer Modeling in Engineering & Sciences 2019年第8期120卷 445-465页

作者： Ali Raza Muhammad Shoaib Arif Muhammad Rafiq Mairaj Bibi Muhammad Naveed Muhammad Usman Iqbal Zubair butt Hafiza Anum Naseem Javeria Nawaz Abbasi Department of Mathematics Stochastic Analysis&Optimization Research GroupAir UniversityPAF Complex E-9IslamabadPakistan Faculty of Engineering University of Central Punjab LahorePakistan Department of Mathematics Comsats UniversityPark Road Chak Shahzad CampusIslamabadPakistan Faculty of Computing National College of Business Administration and Economics LahorePakistan

This writing is an attempt to explain a reliable numerical treatment for stochastic computer virus *** are comparing the solutions of stochastic and deterministic computer virus *** paper reveals that a stochastic computer virus paradigm is pragmatic in contrast to the deterministic computer virus *** of threshold number C^?hold in stochastic computer virus *** C^?1 shows virus persists in the computer ***,stochastic numerical methods fail to cope with large step sizes of *** suggested structure of the stochastic non-standard finite difference scheme(SNSFD)maintains all diverse characteristics such as dynamical consistency,boundedness and positivity as defined by *** numerical treatment for the stochastic computer virus model manifested that increasing the antivirus ability ultimates small virus dominance in a computer community.

关键词： Computer virus,euler maruyama scheme stochastic differential equations stochastic euler scheme stochastic runge-kutta scheme stochastic NSFD scheme stability

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On Computing the Suitability of Non-Human Resources for Business Process Analysis

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Computers, Materials & Continua 2021年第4期67卷 303-319页

作者： Abid Sohail Khurram Shahzad P.D.D.Dominic Muhammad Arif butt Muhammad Arif Muhammad Imran Tariq Department of Computer Science COMSATS University IslamabadLahorePakistan Punjab University College of Information Technology University of the PunjabLahorePakistan Universiti Teknologi PETRONAS Bandar Seri IskandarTronoh PerakMalaysia School of Computer Science Guangzhou UniversityGuangzhou510006China Department of Computer Science and Information Technology Superior UniversityLahorePakistan

Business process improvement is a systematic approach used by several organizations to continuously improve their quality of *** to that is analyzing the current performance of each task of the process and assigning the most appropriate resources to each *** continuation of our previous work,we categorize resources into human and non-human *** instance,in the healthcare domain,human resources include doctors,nurses,and other associated staff responsible for the execution of healthcare activities;whereas the non-human resources include surgical and other equipment needed for *** this study,we contend that the two types of resources(human and non-human)have a different impact on the process performance,so their suitability should be measured ***,no work has been done to evaluate the suitability of non-human resources for the tasks of a ***,it becomes difficult to identify and subsequently overcome the inefficiencies caused by the non-human resources to the *** address this problem,we present a three-step method to compute a suitability score of non-human resources for the *** an evaluation of the proposed method,a healthcare case study is used to illustrate the applicability of the proposed ***,we performed a controlled experiment to evaluate the usability of the proposed *** encouraging response shows the usefulness of the proposed method.

关键词： Business process management business process improvement process warehouse data warehouse resource suitability component resource suitability health care artificial intelligence

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Chinese companies＇ outward internationalization to emerging countries： The case of Latin America

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Chinese Business Review 2009年第7期8卷 13-28页

作者： Gaston Fornes Alan butt-Philip University of Bristol Rrixtol BS8 ITU UK ESIC Business and Marketing School Pozuelo de Alarcon 28223 Spain University of Bath Bath BA2 7AY UK

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