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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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uLAM-HYERS-RASSIAS STABILITY AND EXISTENCE OF SOLuTIONS TO NONLINEAR FRACTIONAL DIFFERENCE EQuATIONS WITH MuLTIPOINT SuMMATION BOuNDARY CONDITION

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Acta Mathematica Scientia 2020年第2期40卷 589-602页

作者： Syed Sabyel HAIDER Mujeeb ur REHMAN School of Natural Sciences National University of Sciences and TechnologyH-12 Islamabad44000Pakistan

The purpose of this study is to acquire some conditions that reveal existence and stability for solutions to a class of difference equations with non-integer orderμ∈(1,2].The required conditions are obtained by applying the technique of contraction principle for uniqueness and Schauder’s fixed point theorem for ***,we establish some conditions under which the solution of the considered class of difference equations is generalized ulam-Hyers-Rassias *** for the illustration of results is given.

关键词： Fractional difference equation Green's function existence and uniqueness ulam-Hyers-Rassias stability summation boundary condition

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Clinical role and importance of fluorescence in situ hybridization method in diagnosis of H pylori infection and determination of clarithromycin resistance in H pylori eradication therapy

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World Journal of Gastroenterology 2007年第5期13卷 671-675页

作者： zlem yilmaz Ebru Demiray Dokuz Eylül university Faculty of Medicine Department of Microbiology and Clinical Microbiology 35340 Inciralt1-IZMIR Turkey

H pylori is etiologically associated with gastritis, gas-tric and duodenal ulcers, gastric adenocarcinoma and mucosa-associated lymphoid tissue (MALT) lymphoma. Eradicating H pylori may convert rapidly the outcome of related diseases with the use of more accurate diagnostic molecular tests. Indeed some of the tests cannot give the evidence of current infection; H pylori can be detected by noninvasive and invasive methods, the latter requiring an endoscopy. Eradication failure is a big problem in H pylori infection. Recently, clarithromycin resistance in H pylori strains is increasing and eradicati-on therapy of this bacterium is becoming more difficult. Molecular methods have frequently been applied besides phenotypic methods for susceptibility testing to detect clarithromycin resistance due to mutations in the 2143 and 2144 positions of 23S rRNA gene. Fluorescence in situ hybridization (FISH) method on paraffin embedded tissue is a rapid, accurate and cost-effective method for the detection of H pylori infection and to determine clarithromycin resistance within three hours according to the gold standards as a non-culture method. This method can also be applied to fresh biopsy samples and the isolated colonies from a culture of H pylori, detecting both the culturable bacillary forms and the coccoid forms of H pylori, besides the paraffin embedded tissue secti-ons. This technique is helpful for determining the bac-terial density and the results of treatment where clarith-romycin has been widely used in populations to increase the efficacy of the treatment and to clarify the treatment failure in vitro.

关键词： H pylori Fluorescence in situ hybridization method Clarithromycin resistance

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Biomarkers for noninvasive biochemical diagnosis of nonalcoholic steatohepatitis:Tools or decorations?

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World Journal of Gastroenterology 2009年第34期15卷 4346-4347页

作者： Yusuf yilmaz Enver Dolar Department of Gastroenterology Marmara UniversitySchool of Medicine Department of Gastroenterology Uludag University Medical School

In light of the growing epidemics of nonalcoholic fatty liver disease(NAFLD),identification and validation of the novel biochemical surrogate markers for nonalcoholic steatohepatitis(NASH)are paramount to reduce the necessity for liver *** availability of such markers has tremendous potential to radically alter the management strategies of NAFLD patients and to monitor the disease *** current biomarkers do not entirely fulfill the many requirements for the identification of patients with NASH,they should not discourage our quest,but remind us that we need to cognize the challenges ahead.

关键词： Nonalcoholic fatty liver disease Nonalcoholic steatohepatitis Biomarkers Liver biopsy

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Computationally efficient locality-aware interconnection topology for multi-processor system-on-chip(MP-SoC)

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Chinese Science Bulletin 2010年第29期55卷 3363-3371页

作者： Haroon-ur-Rashid Khan School of Computer Sicence and Technology Beijing Institute of Technology

This paper evaluates the Triplet Based Architecture,TriBA-a new idea in chip multiprocessor architectures and a class of Direct Interconnection Network(DIN).TriBA consists of a 2D grid of small,programmable processing units,each physically connected to its three neighbors so that advantageous features of group locality can be fully and efficiently *** communication model can be well characterized by locality properties and,any topology has its intrinsic,structural,locality *** propose a new criterion in performance evaluation that is based on the concept of locality in an interconnection network,the "lower layer complete connect".Our proposed criterion depicts how completely a processing node is connected to all its *** is compared with 2D Mesh and Binary Tree as static interconnection *** comparison/evaluation is enumerated from three orthogonal view points,viz.,computational speed,physical layout and *** analysis concludes that TriBA is computationally efficient interconnection strategy that exploits group locality in processing nodes.

关键词：互连网络系统级芯片拓扑结构多处理器计算效率局部性 SoC MP

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Effect of acupuncture therapy on fracture healing in rats with femur fractures

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Journal of Traditional Chinese Medicine 2020年第2期40卷 275-283页

作者： Seval yilmaz Emre Kaya Erhan yilmaz Ahmet Kavakli Suleyman Gurbuz Mustafa Ozkaraca Firat university Faculty of Veterinary MedicineDepartment of BiochemistryElazig 23119Turkey Firat university Faculty of MedicineDepartment of Orthopedics and TraumatologyElazig 23119Turkey Firat university Faculty of MedicineDepartment of AnatomyElazig 23119Turkey Ataturk university Faculty of Veterinary MedicineDepartment of PathologyErzurum 25240Turkey

OBJECTIVE: To investigate the effect of acupuncture therapy on fracture healing in rats with femur ***: A total of 10 groups were formed;control group, groups sacrificed on 7 th, 14 th, and 21 st days of fracture formation, groups to which acupuncture was applied for 7, 14, and 21 d, groups to which fracture and acupuncture were applied for 7,14, and 21 d. A transverse fracture line was formed in femurs of rats by using a Gigli saw. The Kirschner wire was driven retrograde down from the fracture line to proximal part of the bone and then, the fracture was fixed towards distal part. Acupuncture was applied to the rats for 7, 14, and 21 d as 4 sessions per week after formation of the ***: Malondialdehyde(MDA), reduced glutathione(GSH) levels, catalase(CAT), glutathione-Stransferase(GST), superoxide dismutase(SOD), and glucose-6-phosphate dehydrogenase(G6 PD) activities were measured. Despite the increased MDA levels, G6 PD and SOD activities reduced during the fracture healing. There was a statistically significant increase in MDA, GSH levels, and G6 PD activity in fracture groups compared to control group, but CAT, GST, and SOD activities decreased. The use of acupuncture enhanced callus development and bone mineralization during bone ***: The acupuncture therapy can affect suppression of the effects of free oxygen radicals and regulation of the antioxidant enzyme activity in fracture healing. Thus, it is suggested that acupuncture treatment would be beneficial for fracture healing in order to eliminate the negative effects induced by oxygen free radicals.

关键词： Femur Fracture healing Acupuncture Malondialdehyde Antioxidants

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Metabolic-associated Fatty Liver Disease(MAFLD):A Multi-systemic Disease Beyond the Liver

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Journal of Clinical and Translational Hepatology 2022年第2期10卷 329-338页

作者： Eda Kaya Yusuf yilmaz Department of Internal Medicine Ruhr University BochumUniversity Hospital Knappschaftskrankenhaus BochumBochumGermany Department of Gastroenterology School of MedicineMarmara UniversityIstanbulTurkey Liver Research unit Institute of GastroenterologyMarmara UniversityIstanbulTurkey

Nonalcoholic fatty liver disease(NAFLD)is a multisystemic clinical condition that presents with a wide spectrum of extrahepatic manifestations,such as obesity,type 2 diabetes mellitus,metabolic syndrome,cardiovascular diseases,chronic kidney disease,extrahepatic malignancies,cogni-tive disorders,and polycystic ovarian *** NAFLD patients,the most common mortality etiology is cardiovascular disorders,followed by extrahepatic malignancies,diabetes mellitus,and liver-related ***,the severity of extrahepatic diseases is parallel to the severity of *** clinical practice,awareness of the associations of concomitant diseases is of major importance for initiating prompt and timely screening and multidisciplinary management of the disease *** 2020,a consensus from 22 countries redefined the disease as metabolic(dysfunction)-associated fatty liver disease(MAFLD),which resulted in the redefinition of the corre-sponding *** the patients diagnosed with MAFLD and NAFLD mostly overlap,the MAFLD and NAFLD populations are not *** this review,we compared the associations of key extrahepatic diseases between NAFLD and MAFLD.

关键词： Metabolic diseases Fatty liver Liver fibrosis Diabetes mellitus,type 2 Cardiometabolic risk factors

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Topology and ferroelectricity in group-V monolayers

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Chinese Physics B 2020年第5期29卷 1-12页

作者： Mutee ur Rehman Chenqiang Hua Yunhao Lu State Key Laboratory of Silicon Materials School of Materials Science and EngineeringZhejiang UniversityHangzhou 310027China Zhejiang Province Key Laboratory of Quantum Technology and Device Department of PhysicsZhejiang UniversityHangzhou 310027China

The group-V monolayers(MLs)have been studied intensively after the experimental fabrication of two-dimensional(2D)graphene and black *** observation of novel quantum phenomena,such as quantum spin Hall effect and ferroelectricity in group-V elemental layers,has attracted tremendous attention because of the novel physics and promising applications for nanoelectronics in the 2D *** this review,we comprehensively review recent research progress in engineering of topology and ferroelectricity,and several effective methods to control the quantum phase transition are *** then introduce the coupling between topological orders and ferroelectric *** research directions and outlooks are discussed at the end of the *** is expected that the comprehensive overview of topology and ferroelectricity in 2D group-V materials can provide guidelines for researchers in the area and inspire further explorations of interplay between multiple quantum phenomena in low-dimensional systems.

关键词： topology ferroelectricity two-dimensional material group-V element

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On Certain Identities with Automorphisms on Lie Ideals in Prime and Semiprime Rings

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Algebra Colloquium 2019年第1期26卷 93-104页

作者： Vincenzo De Filippis Nadeem ur Rehman Department of Engineering University of Messina 98166 Messina Italy Department of Mathematics Aligarh Muslim University Aligarh India

Let R be a prime ring of characteristic different from 2, Z(R) its center, L a Lie ideal of R, and m, n, s, t≥> 1 fixed integers with t ≤ m + n + s. Suppose that a is a non-trivial automorphism of R and let φ(x,y)=[x,y]^t -[x,y]^m[α([x,y]),[x,y]^n[x,y]^s. Thus,(a)if φ(u, v)= 0 for any u,v∈L, then L■Z(R);(b) if φ(u,v)∈ Z(R) for any u,v∈L, then either L■Z(R) or R satisfies S4, the standard identity of degree 4. We also extend the results to semiprime rings.

关键词： auto morphism (semi-) prime ring Lie ideal

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Construction of a Quadratic Model for Predicted and Measured Global Solar Radiation in Chile

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Chinese Physics Letters 2007年第1期24卷 291-293页

作者： Ercan yilmaz Beatriz CANCINO Edmundo LOPEZ Department of Physics Mustafa Kemal University 31040 Antakya Turkey Department of Food Engineering Pontificia Universidad Catdlica de Valparaiso Chile Department of Electrical Engineering Pontificia Universidad Cat61ica de Valparaiso Chile

Global solar radiation data for sites in Chile are analysed and presented in a form suitable for their use in engineering. A new model for monthly average data is developed to predict monthly average global radiation with acceptable accuracy by using actinographic data due to scarcing of pyranometer data. use of the new quadratic model is proposed because of its relatively wider spectrum of values for Angstrom coefficients ao, al, and a2.

关键词： Quadratic Model Global Solar Radiation Chile engineering

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