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Switchable Brillouin frequency multiwavelength and pulsed fiber laser

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Chinese Optics Letters 2017年第10期15卷 71-75页

作者： S.J.Tan h.haris S.W.harun School of Engineering KDU University College Department of Electrical Engineering Faculty of EngineeringUniversity of Malaya Photonics Research Center University of Malaya

Switchable single and double Brillouin multiwavelength and pulsed laser is successfully demonstrated. Brillouin spacing can be switched from single（0.08 nm） to double spacing（0.16 nm） or vice versa by swapping the ports of the coupler in the proposed configuration. The proposed configuration can also be used to produce pulsed laser by inserting a home-made carbon nanotubes saturable absorber into the laser cavity. The proposed system is very versatile and flexible as it can be used as a multiwavelength laser or pulsed laser to cater for different types of applications.

关键词： Switchable Brillouin frequency multiwavelength and pulsed fiber laser EDF OSA MWCNT

Physical Properties of Ⅲ-Antiminodes—a First Principles Study

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Communications in Theoretical Physics 2009年第9期52卷 527-533页

作者： Rashid Ahmed Fazal-e-Aleem S.Javad hashemifar haris Rashid h.Akbarzadeh Centre for high Energy Physics University of the Punjab Department of Physics Isfahan University of Technology

A comprehensive first principles study of III-Antimonide binary compounds is hardly found in literature. We report a broad study of structural and electronic properties of boron antimonide （BSb）, aluminium antimonide （AlSb）, gallium antimonide （GaSb） and indium antimonide （InSb） in zineblende phase based on density functional theory （DFT）. Our calculations are based on Full-PotentiM Lineaxized Augmented Plane wave plus local orbitals （FP- L（APWq-lo）） method. Different forms of exchange-correlation energy functional and corresponding potential are employed for structural and electronic properties. Our computed results for lattice parameters, bulk moduli, their pressure derivatives, and cohesive energy are consistent with the available experimental data. Boron antimonide is found to be the hardest compound of this group. For band structure calculations, in addition to LDA and GGA, we used GGA-EV, an approximation employed by Engel and Vosko. The band gap results with GGA-EV are of significant improvement over the earlier work.

关键词： III-antimonides DFT FPLAPW exchange correlation functional structural properties of solids band structure of crystalline solids

Passively Q-Switched EDFL Using a Multi-Walled Carbon Nanotube Polymer Composite Based on a Saturable Absorber

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Chinese Physics Letters 2014年第3期31卷 69-72页

作者： F. Ahmad h. haris R. M. Nor N. R. Zulkepely h. Ahmad S. W. harun Department of Electrical Engineering University of Malaya Kuala Lumpur 50603 Malaysia Photonics Research Centre University of Malaya Kuala Lumpur 50603 Malaysia Department of Physics University of Malaya Kuala Lumpur 50603 Malaysia

A stable passive Q-switched erbium-doped fiber laser （EDFL） operating at 1563.5 nm is demonstrated by using a multi-walled carbon nanotube （MWCNT） polymer composite film based saturable absorber for the first time. The composite is prepared by mixing the MWCNTs homogeneous solution into a dilute PEO polymer solution before it is left to dry at room temperature to produce thin film. Then the film is sandwiched between two FC/PC fiber connectors and is integrated into the laser cavity for Q-switching pulse generation. The EDFL generates a stable pulse train with repetition rates ranging from 4.5 khz to 20.0 khz by varying the 1480 nm pump power from 35 mW to 53 mW. At the 53 mW pump power, the pulse width and pulse energy are 8.8 μs and 15.3 nJ, respectively.

关键词： Saturable absorbers

Evaluation of activities of daily living following pseudophakic presbyopic correction

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Eye and Vision 2017年第1期4卷 6-13页

作者： Georgios Labiris Panagiota Ntonti Maria Patsiamanidi haris Sideroudi Kimon Georgantzoglou Vassilios P.Kozobolis Department of Ophthalmology University Hospital of Alexandroupolis68100 DraganaAlexandroupolisGreece Eye Institute of Thrace AlexandroupolisGreece

Background:Pseudophakic presbyopic correction is among the prevalent methods for regaining near vision *** purpose of this study is to compare the impact of pseudophakic monovision correction and multifocal lens implantation on the performance in a series of activities of daily living(ADL)of presbyopic ***:An ADL research framework(10 ADLs)was constructed and validated in a sample of patients divided into three validation groups according to their near visual ***-two participants that underwent mini-monovision(MoG)cataract extraction and 60 that underwent bilateral multifocal lenses implantation(MfG)populated study groups and addressed the *** uncorrected distant(BdUVA)and near(BnUVA)visual acuity were associated with ADL scores and with subjective satisfaction using the VF-14 ***:Test-retest reliability[all Intraclass Correlations Coefficients(ICC)>0.90]and construct validity(all phometric performance of the ADL *** study groups presented comparable mean ADL scores(p=0.07)however,MoG patients had lower performance in demanding ADLs(p=0.02).ADL scores demonstrated significant correlation with BnUVA(r^(2)=−0.67,ph methods provide sufficient near vision capacity for the majority of activities of daily ***,only multifocal lens implantation can address demanding near vision tasks.

关键词： Cataract Presbyopia Monovision Multifocal intraocular lenses Activities of daily living

Six New Species of Sawflies from Gansu and Qinghai Provinces of China (hymenoptera: Tenthredinidae)

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Zoological Research 2009年第3期30卷 319-326页

作者： Attila haris hungarian Natural history Museum h-8142 Urhida

Three new Tenthredinidae species are reported from Gansu and three from Qinghai Provinces of China. Tenthredo （Tenthredo） sinotemula sp. nov., Tenthredo （Tenthredella） labrangensis sp. nov. and Tenthredo （Tenthredella） sinosimplex sp. nov. are described from Gansu, Tenthredo （Tenthredella） rolleri sp. nov., Tenthredo （Tenthredella） qinghaiensis sp. nov. and Tenthredo （Tenthredella） yunningsiensis sp. nov. from Qinghai Province.

关键词： hymenoptera Symphyta Tenthredinidae New species. Gansu Qinghai China

In vivo immunomodulatory profile of histamine receptors(h1,h2,h3 and h4):a comparative antagonists study

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Asian Pacific Journal of Tropical Medicine 2010年第6期3卷 465-470页

作者： Trivendra Tripathi Mohammad Shahid haris M Khan Aijaz Ahmed Khan Mashiatullah Siddiqui Rahat Ali Khan Department of Biochemistry Faculty of MedicineJawaharlal Nehru Medical College & HospitalAligarh Muslim UniversityAligarh-202002U.P.India Department of Microbiology Faculty of MedicineJawaharlal Nehru Medical College & HospitalAligarh Muslim UniversityAligarh-202002U.P.India Department of Anatomy Faculty of MedicineJawaharlal Nehru Medical College & HospitalAligarh Muslim UniversityAligarh-202002U.P.India Department of Pharmacology Faculty of MedicineJawaharlal Nehru Medical College & HospitalAligarh Muslim UniversityAligarh-202002U.P.India

Objective:To delineate the comparative immunomodulatory roles of h1R-h4R in antibody generation profile in rabbit ***:The cohort comprised of eight groups containing 18(9 male and 9 female) rabbits in each ***Ⅰremained non-immunized and received only vehicle(sterile distilled water,1 mL/kg×b.i.d.) ***Ⅱreceived vehicle (1 mL/kg×b.i.d.) while GroupsⅢ-Ⅶ(drugs-treated) received subcutaneous histamine (100μg/kg×b.i.d.),and intramuscular h1R-antagonist(pheniramine,10 mg/kg×b.i.d.), h2R-antagonist(ranitidine,10 mg/kg×b.i.d.),h3R-antagonist(iodophenpropit,1μg/kg×b.i.d.) and h4R-antagonist(JNJ 7777120,10μg/kg×b.i.d.),and GroupⅧDMSO(1 mL/kg×b.i.d.),respectively for 10 days(starting from day 1).They were subsequendy immunized with intravenous injection of sheep red blood cells(SRBC) at day *** estimation of serum Igs,IgM and IgG were done by ELISA,and observed at day 0(pre-immunization),and 7,14,21,28 and 58(post-immunization).Results:It was shown that histamine and hRs-antagonists could influence a detectable antibody response to SRBC as early as day 7-post-immunization(post-Ⅰ), which lasted until day 58 post-Ⅰ.The results were found statistically significant(Phis study suggests that histamine receptors play important roles in modulation of antibody generation in which h1R,h2R and h4R have immunosuppressive roles and conversely, h3R playes an immune enhancing *** findings of this study may have clinical significance and provide the baseline information for future study.

关键词： histamine receptors Immunomodulation humoral immune response h3R-antagonist h4R-antagonist

Integration of Sequence Stratigraphic Analysis and 3D Geostatistical Modeling of Pliocene–Pleistocene Delta,F3 Block,Netherlands

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Acta Geologica Sinica(English Edition) 2023年第1期97卷 256-268页

作者： haris Ahmed KhAN Ali Asghar ShAhID Muhammad Jahangir KhAN Taher ZOUAGhI Maria Dolores ALVAREZ Syed Danial Mehdi NAQVI hydrocarbon Development Institute of Pakistan Plot#18Street#6H-9/1IslamabadPakistan Department of Geoscience University of OsloSem Sælands vei 10371 OsloNorway Department of Earth and Environmental Sciences Bahria UniversityKarachi Campus13 National Stadium RoadKarachi-75260Pakistan Department of Geoexploration Faculty of Earth SciencesKing Abdulaziz University21589 JeddahSaudi Arabia Laboratoire de Géoressources CERTEPôle Technologique de Borj Cédria8020 SolimanTunisia Argentina's Geological and Mining Survey Aveneida General Paz 5445Edificio 25INTIGeneral San MartinArgentina

This research is focused on the analysis of the sequence stratigraphic units of F3 Block,within a wave-dominated delta of Plio–Pleistocene *** wells of F3 block and a 3D seismic data,are utilized in this *** conventional techniques of 3D seismic interpretation were utilized to mark the 11 surfaces on the seismic *** of seismic sequence stratigraphic interpretation,using well logs,and subsequent 3D geostatistical modeling,using seismic data,aided to evaluate the shallow hydrocarbon *** resulting models were obtained using System Tract and Facies models,which were generated by using sequential stimulation method and their variograms made by spherical method,moreover,these models are validated via *** CDF curve generated from upscaling of well logs using geometric method,shows a good relation with less percentage of errors(1 to 2 for Facies and 3 to 4 for System Tract models)between upscaled and raw data that complements the resulted *** approaches help us to delineate the best possible reservoir,lateral extent of system tracts(LST and/or hST)in the respective surface,and distribution of sand and shale in the *** clinoform break points alteration observed on seismic sections,also validates the sequence stratigraphic *** GR log-based Facies model and sequence stratigraphy-based System Tract model of SU-04-2 showed the reservoir characteristics,presence of sand bodies and majorly LST,respectively,mainly adjacent to the main fault of the studied ***,on the seismic section,SU-04-2 exhibits the presence of gas pockets at the same location that also complements the generated Facies and System Tract *** generated models can be utilized for any similar kind of study and for the further research in the F3 block reservoir characterization.

关键词： sequence stratigraphy facies modeling system tract modeling F3 block North Sea

Recognition and Tracking of Objects in a Clustered Remote Scene Environment

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Computers, Materials & Continua 2022年第1期70卷 1699-1719页

作者： haris Masood Amad Zafar Muhammad Umair Ali Muhammad Attique Khan Salman Ahmed Usman Tariq Byeong-Gwon Kang Yunyoung Nam Wah Engineering College University of WahWah CanttPakistan Department of Electrical Engineering University of LahoreIslamabad CampusPakistan Department of Unmanned Vehicle Engineering Sejong UniversitySeoul05006Korea Department of Computer Science HITEC University TaxilaTaxila47040Pakistan College of Computer Engineering and Sciences Prince Sattam Bin Abdulaziz UniversityAl-KhrajSaudi Arabia Department of ICT Convergence Soonchunhyang UniversityAsan31538Korea

Object recognition and tracking are two of the most dynamic research sub-areas that belong to the field of Computer *** vision is one of the most active research fields that lies at the intersection of deep learning and machine *** paper presents an efficient ensemble algorithm for the recognition and tracking of fixed shapemoving objects while accommodating the shift and scale invariances that the object may *** first part uses the Maximum Average Correlation height(MACh)filter for object recognition and determines the bounding box *** case the correlation based MACh filter fails,the algorithms switches to a much reliable but computationally complex feature based object recognition technique i.e.,affine scale invariant feature transform(ASIFT).ASIFT is used to accommodate object shift and scale object *** extracts certain features from the object of interest,providing invariance in up to six affine parameters,namely translation(two parameters),zoom,rotation and two camera axis ***,in this paper,only the shift and scale invariances are *** second part of the algorithm demonstrates the use of particle filters based Approximate Proximal Gradient(APG)technique to periodically update the coordinates of the object encapsulated in the bounding *** the end,a comparison of the proposed algorithm with other stateof-the-art tracking algorithms has been presented,which demonstrates the effectiveness of the proposed algorithm with respect to the minimization of tracking errors.

关键词： Object racking MACh filter ASIFT particle filter recognition

Effects of histamine hlR-h4R-agonist on the airway epithelium of rabbits

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Asian Pacific Journal of Tropical Medicine 2010年第5期3卷 367-370页

作者： Naushad A Dilkash Trivendra Tripathi Aijaz Ahmed Khan Mohd Shahid haris M Khan Mashiatullah Siddiqui Rahat Ali Khan Department of Anatomy Faculty of MedicineJawaharlal Nehru Medical College & HospitalAligarh Muslim University Department of Biochemistry Faculty of MedicineJawaharlal Nehru Medical College & HospitalAligarh Muslim University Department of Microbiology Faculty of MedicineJawaharlal Nehru Medical College & HospitalAligarh Muslim University Department of Pharmacology Faculty of MedicineJawaharlal Nehru Medical College & HospitalAligarh Muslim University

Objective:To explore the exact role of histamine receptors in respiratory ***: The cohort comprised of six groups(group I control and groupⅡ—Ⅳtreated) containing five rabbits in each ***-group received vehicle(sterile distilled water) and treated groups received subcutaneous histamine(100μg/kg,b.i.d.),and h1R-agonist(hTMT),h2R-agonist (amthamine),h3R-agonist(R-(-)-α-methylhistamine) and h4R-agonist(clobenpropit) each in a dose of 10μg/kg,*** 30 subsequent *** completion of treatment,animals were euthanized and perfused with 10% buffered *** tissue blocks of trachea and lungs were processed for paraffin *** were recorded in sample photomicrographs taken from 10μm *** and eosin stained ***:It was observed that trachea and bronchi from histamine,h1R and h4R groups had only patches of hyperplastic and hypertrophied epithelium and in general,cells in the affected region were taller heaped up. The bronchiolar epithelia from all treated groups showed hypertrophy and hyperplasia throughout with most of the cells having rounded profile and appeared to bud out from the basal cells. Conclusions:It is concluded that histamine receptors on induction via its specific agonist can induce hypertrophy,hyperplasia of respiratory tract epithelia suggesting its role akin to growth stimulating factor and warranting further long-term study.

关键词： Rabbit Airway epithelium histamine receptors-agonist hyperplasia hypertrophy