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World Journal of Otorhinolaryngology 2024年第2期11卷 18-24页

作者： k m abidur rahman khalid majeed Emma Finnegan Ivan keogh Ear Noseand Throat/Head and Neck SurgeryGalway University HospitalGalway H91 YR71Ireland Academic Department of Otorhinolaryngology and Head and Neck Surgery University of GalwayGalway H91 TK33Ireland

BACkGROUND Endoscopic ear surgery(EES)provides a magnified,high-definition view of the otological surgical *** allows otologists to avoid surgical incisions and associated postoperative *** is an ideal technique for the perfor-mance and teaching of *** To examine the efficacy of total Endoscopic Push Through Tragal Cartilage Tympanoplasty(EPTTCT),at our institution over a 10-year *** A retrospective analysis of 168 cases of EPTTCT for closure of small to medium tympanic membrane perforations from 2013-2023 was *** sex,age range(pediatric vs adult),etiology of injury,success rate,complications,and postoperative hearing status were *** Graft uptake results indicated success in 94%of patients,with less than a 2%complication *** pure tone audiometry demonstrated hearing status improvement in 69%of *** EPTTCT has been shown to be effective in tympanic membrane perforation closures with minimal *** study further demonstrates the efficacy and safety of these procedures in a single-center review.

关键词： Total endoscopic ear surgery Otology Tympanoplasty Hearing Perforation Tragal cartilage graft

ATP binding cassette proteins ABCG37 and ABCG33 function as potassium-independent cesium uptake carriers in Arabidopsis roots

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molecular Plant 2021年第4期14卷 664-678页

作者： mohammad Arif Ashraf Takashi Akihiro keita Ito Sayaka kumagai Ryohei Sugita keitaro Tanoi abidur rahman United Graduate School of Agricultural Sciences Iwate UniversityMoriokaIwate 020-8550Japan Faculty of Lite and Environmental Science Shimane UniversityMatsueShimane 690-8504Japan Faculty of Agriculture Department of Plant Bio SciencesIwate UniversityMoriokaIwate 0208550Japan Graduate School of Agricultural and Life Sciences.The University of Tokyo Tokyo 113-8654.Japan PRESTO Japan Science and Technology Agency(JST)4-1-8 HonchoKawaguchiSaitama 332-0012Japan Agr-Innovation Iwate UniversityMoriokaIwate 020-8550Japan These authors contributed equally Present address:Biology Department University of MassachusettsAmherstMA USA

Radiocesium accumulated in the soil by nuclear accidents is a major environmental *** transport process of cesium(Cs^(+))is tightly linked to the indispensable plant nutrient potassium(k^(+))as they both belong to the group I alkali metals with similar chemical *** of the transporters that had been characterized to date as Cs*transporters are directly or indirectly linked to k^(+).Using a combinatorial approach of physiology,genetics,cell biology,and root uptake assay,here we identified two ATP-binding cassette(ABC)proteins,ABCG37 and ABCG33,as facilitators of Cs^(+)influx.A gain-of-function mutant of ABCG37(abcg37-1)showed increased sensitivity to Cs^(+)-induced root growth inhibition,while the double knockout mutant of ABCG33 and ABCG37(abcg33-1abcg37-2)showed resistance,whereas the single loss-of-function mutants of ABCG33 and ABCG37 did not show any alteration in Cs^(+)*** planta short-term radioactive Cs^(+)-uptake assay along with growth and uptake assays in a heterologous system confirmed ABCG33 and ABCG37 as Cs^(+)-uptake *** response and content were unaffected in the double-mutant background and yeast cells lacking potassium-uptake carriers transformed with ABCG33 and ABCG37 failed to grow in the absence of k^(+),confirming that Cs^(+)uptake by ABCG33 and ABCG37 is independent of k^(+).Collectively,this work identified two ABC proteins as new Cs^(+)-influx carriers that act redundantly and independent of the k^(+)-uptake pathway.

关键词： cesium transport ABC proteins uptake Arabidopsis root biology

Effects of surface finish and treatment on the fatigue behaviour of vibrating cylinder block using frequency response approach

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2006年第3期7卷 352-360页

作者： rahman m. m. ARIFFIN A. k. Computational and Experimental mechanics Group Department of Mechanical and Materials Engineering Universiti Kebangsaan Malaysia 43600 UKM Bangi Selangor DE Malaysia

This paper presents the effects of surface finish and treatment on the high cycle fatigue behaviour of vibrating cylinder block of a new two-stroke free piston engine at complex variable amplitude loading conditions using frequency response approach. Finite element modelling and frequency response analysis was conducted using finite element analysis software Package ***/*** and fatigue life prediction was carded out using *** software. Based on the finite element results, different frequency response approach was applied to predict the cylinder block fatigue life. Results for different load histories and material combinations are also discussed. Results indicated great effects for all surface finish and treatment. It is concluded that polished and cast surface finish conditions give the highest and lowest cylinder block lives, respectively; and that Nitrided treatment leads to longest cylinder block life. The results were used to draw contour plots of fatigue life and damage in the worst or most damaging case.

关键词： Finite element method Fatigue life Surface finish Surface treatment Frequency response approach

Effect of annealing on properties of mg doped Zn-ferrite nanoparticles

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Progress in Natural Science:materials International 2015年第2期25卷 111-116页

作者： k.Nadeem S.rahman m.mumtaz materials Research laboratory Department of Physics International Islamic University

A comparison of structural and magnetic properties of as-prepared and annealed(900 1C) mg doped Zn ferrite nanoparticles(Zn1 xmgxFe2O4,with x=0, 0.1, 0.2, 0.3, 0.4 and 0.5) is presented. X-ray diffraction(XRD) studies confirmed the cubic spinel structure for both the as-prepared and annealed nanoparticles. The average crystallite size and lattice parameter were increased by annealing. Scanning electron microscopy(SEm)images also showed that the average particle size increased after annealing. Fourier transform infrared spectroscopy(FTIR) also confirmed the spinel structure for both series of nanoparticles. For both annealed and as-prepared nanoparticles, the O–mtet.–O vibrational band shifts towards higher wave numbers with increased mg concentration due to cationic rearrangement on the lattice sites. magnetization studies revealed an anomalous decreasing magnetization for the annealed nanoparticles which is also ascribed to cationic rearrangement on the lattice sites after annealing. The measurement of coercivity showed a decreasing trend by annealing due to the increased nanoparticle size and better crystallinity.

关键词： Nanoparticles Annealing Ferrites Spinel structure magnetic properties

孟加拉银行部门培训与发展评价研究——基于员工态度研究

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孟加拉银行部门培训与发展评价研究——基于员工态度研究

作者： A.S.m abidur rahman 燕山大学

学位级别：硕士

Rapid progress and the abnormal profits of the private/govt banking sector of Bangladesh is the hot topic nowadays in the *** academicians and practitioners are amazed to see the highest growth of private banking *** the same time,public/govt banks in the Bangladesh are facing serious dropout of profit and employees ***,this study aimed to investigate public and private banking sector of Bangladesh,specifically this study carried out four primary objectives,the first objective of this research was to investigate and compare the employees’ perception about training and development program in the public and private banking industry of *** second objective was to find out and compare the employees’ turnover intentions in the public and private banking industry of *** third objective was to identify and compare the employees’ job satisfaction in the public and private banking industry of ***,the fourth objective was to explore and compare the employees’ behavior about the training strategy of the public and private banking industry of *** targeted sample of this research consisted of the employees of the banking industry of the *** study implemented the quota and convenience sampling technique to choose respondents and to collect the *** overall sample size comprised of 320（n=320）employees who were working in the public/govt and private banking industry of the Bangladesh.170（n= 170）questionnaires were distributed in the public/govt banks in Bangladesh Similarly,150（n= 150）questionnaires were distributed in the private banks of ***,this study adopted the inferential as well as descriptive data analysis techniques mainly;frequency distribution,percentage,crosstab,and one sample t-test were performed in the SPSS version 21.0 *** result revealed that all the hypotheses related to employees’ perceptions about training and development program for the publ

关键词：银行管理员工培训员工态度孟加拉

Structural and opto-electrical properties of pyrolized ZnO-CdO crystalline thin films

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Journal of Semiconductors 2015年第5期36卷 1-7页

作者： A.m.m.Tanveer karim m.k.R.khan m.mozibur rahman Department of Physics Rajshahi University of Engineering & Technology Department of Physics University of Rajshahi

A series of ZnO-CdO thin films of different molar ratios of Zn and Cd have been deposited on glass sub- strate at substrate temperature -360℃ by the spray pyrolysis technique at an ambient atmosphere. X-ray diffraction （XRD） studies confirmed the polycrystalline nature of the film and modulated crystal structures ofwurtzite （ZnO） and cubic （CdO） are formed. The evaluated lattice parameters, and crystallite size are consistent with literature. Dislocation density and strain increased in the film as the grain sizes of ZnO and CdO are decreased. The band gap energy varies from 3.20 to 2.21 eV depending on the Zn/Cd ratios in the film. An incident photon intensity dependent I-V study confirmed that the films are highly photosensitive. Current increased with the increase of the intensity of the light beam. The optical conductivity and the optical constants, such as extinction coefficient, refractive index and complex dielectric constants are evaluated from transmittance and reflectance spectra of the films and these parameters are found to be sensitive to photon energy and displayed intermediate optical properties between ZnO and CdO, making it preferable for applications as the buffer and window layers in solar cells.

关键词： ZnO-CdO buffer layers XRD spray pyrolysis

Characteristics of Ions Emitted from Laser-Induced Silver Plasma

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Plasma Science and Technology 2008年第4期10卷 450-454页

作者： m.S.RAFIQUE m.kHALEEQ-UR-rahman Shakoor mUNAZZA k.A.BHATTI Department of Physics University of Engineering and TechnologyLahore-54890Pakistan

In this work, study of laser-induced ions is presented. The plasma was produced by focusing a Nd：YAG laser, with a wavelength of 1064 nm, a pulsed width of 9-14 ns, a power of 1.1 mW and energy of 10 mJ, on silver target in vacuum （10-3 Torr= 1.3332 Pa）. The characteristics of ion streams were investigated by CR-39 detectors located at angles of 0°, 30°, 60° and 90° with respect to normal of the target. The distance between the silver target and each detector was 11 cm. The energy of silver ions was found ranging from 1.5 eV to 1.06E4 eV. There was a high concentration of ions with low energy as compared to those with high energy, showing the energy distribution amongst the ions. The flux of ions was maximum in the axial direction which was decreasing with the angle increase with respect to normal of the target, and finally became minimum in the radial direction. Hence the silver ions have shown anisotropic behaviour.

关键词： Nd: YAG laser flux of ions anisotropic solid state nuclear track detector (SSNTD)

Cyber-Physical-Social System Between a Humanoid Robot and a Virtual Human Through a Shared Platform for Adaptive Agent Ecology

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IEEE/CAA Journal of Automatica Sinica 2018年第1期5卷 190-203页

作者： S. m. mizanoor rahman Department of mechanical Engineering College of Engineering and Sciences Clemson University SC 29634 USA IEEE

Two artificial agents(a humanoid robot and a virtual human) are enriched with various similar intelligence,autonomy, functionalities and interaction modalities. The agents are integrated in the form of a cyber-physical-social system(CPSS) through a shared communication platform to create a social ecology. In the ecology, the agents collaborate(assist each other) to perform a real-world task(search for a hidden object)for the benefits of humans. A robot-virtual human bilateral trust model is derived and a real-time trust measurement method is developed. The role of taking initiative in the collaboration is switched between the agents following a finite state machine model triggered by bilateral trust, which results in a mixedinitiative collaboration. A scheme is developed to evaluate the performance of the agents in the ecology through the *** results show that the robot and the virtual human perform satisfactorily in the collaboration through the CPSS. The results thus prove the effectiveness of the real-world ecology between artificial agents of heterogeneous realities through a shared platform based on trust-triggered mixed-initiatives. The results can help develop adaptive social ecology comprising intelligent agents of heterogeneous realities to assist humans in various tasks through collaboration between the agents in the form of a CPSS.

关键词： Adaptive agent ecology assisted living cyberphysical-social system(CPSS) humanoid robot(HR) smart homes social interaction virtual human(VH) shared platform trust

Closed form soliton solutions of three nonlinear fractional models through proposed improved kudryashov method

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Chinese Physics B 2021年第5期30卷 192-205页

作者： Zillur rahman m Zulfikar Ali Harun-Or Roshid Department of mathematics Comilla UniversityCumilla-3506Bangladesh Department of mathematics Rajshahi UniversityRajshahi-6205Bangladesh Department of mathematics Pabna University of Science and TechnologyPabna-6600Bangladesh

We introduce a new integral scheme namely improved kudryashov method for solving any nonlinear fractional differential ***,we apply the approach to the nonlinear space-time fractional model leading the wave to spread in electrical transmission lines(s-tfETL),the time fractional complex Schrödinger(tfcS),and the space-time m-fractional Schrödinger-Hirota(s-tm-fSH)models to verify the effectiveness of the proposed *** implementing of the introduced new technique based on the models provides us with periodic envelope,exponentially changeable soliton envelope,rational rogue wave,periodic rogue wave,combo periodic-soliton,and combo rational-soliton solutions,which are much interesting phenomena in nonlinear *** the results disclose that the proposed technique is very effective and straight-forward,and such solutions of the models are much more fruitful than those from the generalized kudryashov and the modified kudryashov methods.

关键词： improved kudryashov method fractional electrical transmission line equation fractional nonlinear complex Schrödinger equation m-fractional Schrödinger-Hirota(s-tm-fSH)

Entropy Quantization of Schwarzschild Black Hole

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Communications in Theoretical Physics 2019年第3期71卷 307-311页

作者： m.Atiqur rahman Department of Applied mathematics Rajshahi University

The surface gravity of Schwarzschild black hole can be quantized from the test particle moving around different energy states analog to the Bohr's atomic model. We have quantized the Hawking temperature and entropy of Schwarzschild black hole from quantization of surface gravity. We also have shown that the change of entropy reduces to zero when the boundary shrinks to very small size.

关键词： Hawking temperature entropy Schwarzschild black hole