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Transactions of Nonferrous Metals Society of China 2015年第3期25卷 759-769页

作者： mohsin talib mohammed Zahid A.KHAN M.GEETHA Department of Mechanical Engineering Faculty of EngineeringKufa University Department of Mechanical Engineering Jamia Millia Islamia Centre for Biomaterials Science and Technology VIT University

The influence of thermo-mechanical processing (TMP) on the microstructure and the electrochemical behavior of new metastableβ alloy Ti?20.6Nb?13.6Zr?0.5V (TNZV) was investigated. The TMP included hot working in belowβ transus, solution heat treatments at the same temperature and different cooling rates in addition to aging. Depending upon the TMP conditions, a wide range of microstructures with varying spatial distributions and morphologies of equiaxed/elongatedα andβ phases were attained, allowing for a wide range of electrochemical properties to be achieved. The corrosion behavior of the studied alloy was evaluated in a Ringer’s solution at 37 °C via open circuit potential?time and potentiodynamic polarization measurements.

关键词： titanium alloy thermo-mechanical processing biomedical application microstructure electrochemical behavior corrosion

Fishery stock assessment of Kiddi shrimp (Parapenaeopsis stylifera) in the Northern Arabian Sea Coast of Pakistan by using surplus production models

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Chinese Journal of Oceanology and Limnology 2017年第4期35卷 936-946页

作者： mohsin Muhammad 慕永通 MEMON Aamir Mahmood KALHORO Muhammad talib SHAH Syed Baber Hussainin College of Fisheries Ocean University of China

Pakistani marine waters are under an open access regime. Due to poor management and policy implications, blind fishing is continued which may result in ecological as well as economic losses. Thus, it is of utmost importance to estimate fishery resources before harvesting. In this study, catch and effort data, 1996-2009, of Kiddi shrimp Parapenaeopsis stylifera fishery from Pakistani marine waters was analyzed by using specialized fishery software in order to know fishery stock status of this commercially important shrimp. Maximum, minimum and average capture production ofP. stylifera was observed as 15 912 metric tons （mr）（1997）, 9 438 mt （2009） and 11 667 mt/a. Two stock assessment tools viz. CEDA （catch and effort data analysis） and ASPIC （a stock production model incorporating covariates） were used to compute MSY （maximum sustainable yield） of this organism. In CEDA, three surplus production models, Fox, Schaefer and Pella-Tomlinson, along with three error assumptions, log, log normal and gamma, were used. For initial proportion （IP） 0.8, the Fox model computed MSY as 6 858 nat （CV=0.204, R^2=0.709） and 7 384 mt （CV=0.149, R^2=0.72） for log and log normal error assumption respectively. Here, gamma error produced minimization failure. Estimated MSY by using Schaefer and Pella-Tomlinson models remained the same for log, log normal and gamma error assumptions i.e. 7 083 mt, 8 209 mt and 7 242 mt correspondingly. The Schafer results showed highest goodness of fit R2 （0.712） values. ASPIC computed MSY, CV, R2, FMsv and BMsv parameters for the Fox model as 7 219 nat, 0.142, 0.872, 0.111 and 65 280, while for the Logistic model the computed values remained 7 720 mt, 0.148, 0.868, 0.107 and 72 110 correspondingly. Results obtained have shown that P. stylifera has been overexploited. Immediate steps are needed to conserve this fishery resource for the future and research on other species of commercial importance is urgently needed.

关键词： stock assessment fishery management Parapenaeopsis stylifera surplus production models Pakistan

Mucosal T-cell responses to chronic viral infections:Implications for vaccine design

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Cellular & Molecular Immunology 2024年第9期21卷 982-998页

作者： mohammed Al-talib Sandra Dimonte Ian R.Humphreys Systems Immunity University Research Institute/Division of Infection and Immunity School of MedicineCardiff UniversityCardiffCF144XNUK Bristol Medical School University of Bristol5 Tyndall AvenueBristolBS81UDUK

Mucosal surfaces that line the respiratory,gastrointestinal and genitourinary tracts are the major interfaces between the immune system and the *** unique immunological landscape is characterized by the necessity of balancing tolerance to commensal microorganisms and other innocuous exposures against protection from pathogenic threats such as *** pathogenic viruses,including herpesviruses and retroviruses,exploit this environment to establish chronic *** and regulatory T-cell populations,including effector and resident memory T cells,play instrumental roles in mediating the transition from acute to chronic infection,where a degree of viral replication is tolerated to minimize *** antigen exposure during chronic viral infection leads to the evolution and divergence of these *** this review,we discuss advances in the understanding of mucosal T-cell immunity during chronic viral infections and how features of T-cell responses develop in different chronic viral infections of the *** consider how insights into T-cell immunity at mucosal surfaces could inform vaccine strategies:not only to protect hosts from chronic viral infections but also to exploit viruses that can persist within mucosal surfaces as vaccine vectors.

关键词： Virus T cells Mucosa Chronic infection Cytomegalovirus HIV

Experimental and numerical study of effecting core configurations on the static and dynamic behavior of honeycomb plate with aluminum material

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Defence Technology（防务技术） 2024年第9期39卷 177-192页

作者： Nehad Abid Allah Hamza Fatima mohammed K.AL-Fatlwe Muna Ali talib Engineering College Al-Qasim Green University51013BabylonIraq Engineering Technical College of Al-Najaf Al-Furat Al-Awsat Technical University(ATU)Najaf54003Iraq

The sandwich panel incorporated a honeycomb core,a widely utilized composite structure recognized as a fundamental classification of composite *** a core resembling a honeycomb,possessing thickness and softness,and is flank by rigid face sheets that sandwich various shapes and *** paper presents an examination of the static and dynamic analysis of lightweight plates made of aluminum honeycomb sandwich *** sandwich plate samples are 300 mm long,and 300 mm wide,the heights of the core have been varied at four values ranging from 10 to 25 *** honeycomb core is manufactured from Aluminum material by using a novel technique namely resistance spot welding(RSW)instead of using adhesive material,which is often used when an industrial flaw is *** optimization based on response surface methodology(RSM)and design of experiment software(DOE)was used to verify the current work.A theoretical examination of the crashworthiness behavior(maximum bending load,maximum deflection)and vibration attributes(natural frequency,damping ratio,transient temporal response)of honeycomb sandwich panels with different design parameters was also carried *** addition,the finite element method-based ANSYS software was used to confirm the theoretical *** findings of the present work showed that the relationship between the natural frequency,core height,and cell size is *** contrast,the relationship between the natural frequency and the thickness of the cell wall is ***,the damping ratio is inversely proportional to the core height and cell size but directly proportional to the thickness of the cell *** study indicates that altering the core height within 10-25 mm leads to a significant increase of 82%in the natural frequency and a notable decrease of 49%in the damping *** findings are based on a specific cell size value of 0.01 m and a cell wall thickness of 0.001 ***,the results indicate

关键词： Honeycomb Load Transient response Free vibration Natural frequency

Supercritical carbon dioxide extraction of Triognella foenum graecum Linn seeds:Determination of bioactive compounds and pharmacological analysis

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Asian Pacific Journal of Tropical Biomedicine 2017年第12期7卷 1085-1091页

作者： Ola Basa’ar Samreen Fatema Ali Alrabie mohammed mohsin Mazahar Farooqui Department of Chemistry Hodeidah University Post Graduate & Research Center Maulana Azad College Dr.Rafiq Zakaria College for women

Objective: To investigate the effect of temperature and pressure on supercritical CO_2 extraction of Triognella foenum graecum Linn seeds, to determine the optimal condition which leads to highest percentage of the accumulative yield and revealing the chemical composition of supercritical CO_2 ***: Temperatures in the range of 40–60C and pressures in the range of 10–25 MPa were used. FTIR and GC–MS analysis were used to detect the bioactive compounds present in the extract. The broth dilution method and slope method were used to evaluate the anti-microbial and anti-tuberculosis activities and the in vitro anti-malarial assay was carried out according to the micro assay protocol of Rieckmann and his ***: The temperature was more affected than the pressure on the extraction performance and the highest yield of the extract(3.111%) was attained at 60C and 10 *** and GC–MS showed that the chemical composition of the extract included conjugated linoleic acid methyl ester as the major active principle(with concentration of72.28%), followed by saturated fatty acid methyl esters(16.03%), steroids(8.09%) and organic siloxane compound(3.61%). The extract showed moderate anti-bacterial activity with MIC values 100, 250, 125 mg/m L towards Escherichia coli, Staphylococcus aureus and Streptococcus pyogenus respectively. It exhibited high inhibition effect towards the fungi Candida albican with MFC value(250 mg/m L). The extract had low antituberculosis activity with MIC value(100 mg/m L) and comparable MIC value(0.29 mg/m L) towards Plasmodium ***: Supercritical CO_2 extraction as alternate and green technology is performed successfully to extract the bioactive compounds from the seeds of T. foenum graecum Linn and it is concluded that this extract can be used as an alternate source of synthetic anti-biotic drugs.

关键词： Anti-bacterial Anti-fungal Anti-malarial Anti-tuberculosis Sc–CO2 extraction Triognella foenum graecum Linn

Nanoscaled MnSnO_(2)@CsPbBr_(3) quantum dots heterostructure photocatalyst as efficient organic pollutants degradation by peroxymonosulfate;DFT calculation

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Journal of Materials Science & Technology 2023年第22期153卷 41-55页

作者： Raqiqa Tur Rasool Ghulam Abbas Ashraf mohsin Pasha Muhammad Farooq Saleem Djamel Ghernaout mohammed M.Fadhali Hai Guo Department of Physics Zhejiang Normal UniversityJinhuaZhejiang 321004China School of Chemistry and Chemical Engineering Frontiers Science Center for Transformative MoleculesShanghai Jiao Tong UniversityShanghai 200240China GBA branch of Aerospace Information Research Institute Chinese Academy of SciencesGuangzhou 510700China Chemical Engineering Department College of EngineeringUniversity of Ha’ilPO Box 2440Ha’il 81441Saudi Arabia Chemical Engineering Department Faculty of EngineeringUniversity of BlidaPO Box 270Blida 09000Algeria Department of Physics Faculty of ScienceJazan UniversityJazan 45142Saudi Arabia Department of Physics Faculty of ScienceIbb University 70270Yemen

In this work,we developed a promising photocatalyst in CsPbBr_(3) quantum dots(QDs)because of their exceptional optoelectronic ***,QDs applications in the field of photocatalysis were mainly hampered by their poor stability and insufficient charge transfer ***,a novel and efficient MnSnO_(2)@CsPbBr_(3)(MSO@QDs)nanocomposite was first time effectively designed and synthe-sized by a wet impregnation method for peroxymonosulfate(PMS)activation under the *** newly generated interface phase of QDs between MnSnO_(2)(MSO)showed great potential to improve light ab-sorption,leading to effective separation and transfer of photoelectron-hole *** novel nanocompos-ite MSO@QDs showed great Flurbiprofen(FL)removal efficiency under the PMS/Light *** should be noted that this nanocomposite removed 85.74%of FL in just 70 min,which was almost 1.11 and 2.51 times greater than using pure QDs and pure MSO,*** on thorough measurements of structural analysis,Brunauer-Emmett-Teller(BET),UV-vis spectra,electrochemical impedance spec-troscopy(EIS),transient photocurrent response,and a potential mechanism for organic pollutants degra-dation over MSO@QDs nanocomposite was *** principal reactive species of photoinduced holes(h^(+)),i.e.O_(2)^(˙−),SO_(4)^(˙−),^(˙)OH,and non-radical(^(1)O_(2))were characterized via scavengers’technique and electron paramagnetic resonance(EPR)*** highest photocatalytic performance for the re-moval of MO,MB,and IBU was demonstrated by MSO@QDs nanocomposite/PMS,revealing their excellent ability to remove organic pollutants through ***,the developed nanocompos-ite exhibited good stability in an aqueous *** to computational investigation using the density functional theory(DFT)method,the site’s higher Fukui index f^(0) value corresponds to a greater propensity to be attacked by reactive *** work offers a fresh perspective on developi

关键词： CsPbBr_(3)QDs MnSnO_(2) Peroxymonosulfate Nanocomposite Photocatalyst Organic pollutants DFT

Imaging through Atmospheric Turbulence Using Kolmogorov and Gaussian Statistics

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Journal of Physical Science and Application 2012年第4期2卷 128-138页

作者： Ali talib mohammed College of Science University of Baghdad Iraq

Computer simulations were carried out to investigate the limitations imposed by Gaussian and Kolmogorov atmospheric turbulence on observing astronomical objects via ground based optical telescopes. These limitations were studied in terms of the point spread function of a reference star and the autocorrelation function of a binary star. Quantitative comparative assessments demonstrate the superiority of Kolmogorov approach.

关键词： Turbulent atmosphere Fourier transform optical imaging adaptive optics.

Impact of Analogical Images on Solving Scientific and Environmental Problems Creatively

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Psychology Research 2014年第5期4卷 397-409页

作者： mohammed talib Aikiyumi Ministry of Education Muscat Sultanate of Oman

A Compact Size 5G Hairpin Bandpass Filter with Multilayer Coupled Line

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Computers, Materials & Continua 2021年第12期69卷 4025-4042页

作者： Qazwan Abdullah Ömer Aydogdu Adeeb Salh Nabil Farah Md Hairul Nizam talib Taha Sadeq mohammed A.A.Al-Mekhalfi Abdu Saif Faculty of Electrical and Electronic Engineering Selçuk UniversityKonyaTurkey Faculty of Engineering and Natural Sciences Konya Technical UniversityKonyaTurkey Faculty of Engineering Technology Universiti Tun Hussein Onn MalaysiaPagohMuarJohorMalaysia Faculty of Electrical Engineering Universiti Teknikal Malaysia MelakaMelakaMalaysia Faculty of Engineering and Science Universiti Tunku Abdul RahmanSungai Long CampusSelangor43000Malaysia Faculty of Electrical Engineering Department University of MalayaKuala LumpurMalaysia

The multilayer structure is a promising technique used to minimize the size of planar microstrip *** the flexible design and incorporation of other microwave components,multilayer band-pass filter results in better and enhanced *** paper introduces a microstrip fifth-generation(5G)low-frequency band of 2.52–2.65 GHz using a parallel-coupled line(PCL)Bandpass filter and multilayer(ML)hairpin Bandpass *** targeted four-pole resonator has a center frequency of 2.585 GHz with a bandwidth of 130 *** filters are designed with a 0.1 dB passband ripple with a Chebyshev *** hairpin-line offers compact filter design ***,they can be obtained by bending half-wavelength resonator resonators with parallel couplings into a“U”*** proposed configuration of the parllel-coupled line resonator is used to design the ML band-pass *** FR4 substrate with a dielectric constant(Er)of 4.3 and 1.6 mm thickness was used.A comparative analysis between the simulated insertion loss and the reflection cofficient of substrates RO3003 and FR4 was performed to validate the eficiency of the proposed filter *** of PCL filter is accom-plished using computer simulation technology(CST)and an advanced design system(ADS)*** PCL Bandpass filter was experimentally validated and a total tally between simulation results and measured results were achieved demonstrating a well-measured reflection *** simulated results obtained by the hairpin ML bandpass filter show that the circuit performs well in terms of Scattering(S)parameters and the filter size is significantly reduced.

关键词： Band-pass filter 5G hairpin multi-layer size reduction parallelcoupled line

Is intra-operative cholangiography necessary during laparoscopic cholecystectomy? A multicentre rural experience from a developing world country

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World Journal of Gastroenterology 2007年第33期13卷 4493-4497页

作者： Iqbal Saleem Mir Mir mohsin Omar Kirmani Tafazul Majid Khurshid Wani Mehmood-ul Hassan Javed Naqshbandi mohammed Maqbool Minimal Access Surgery Unit Government Gousia Hospital Khanyar Kashmir 190010 India Department of Radiology Government Gousia Hospital Khanyar Kashmir 190010 India Anaesthesia Unit Government Gousia Hospital Khanyar Kashmir 190010 India

AIM: To evaluate the feasibility and safety of performing laparoscopic cholecystectomy (LC) in nonteaching rural hospitals of a developing country without intra-operative cholangiography (IOC). To evaluate the possibility of reduction of costs and hospital stay for patients undergoing ***: A prospective analysis of patients with symptomatic benign diseases of gall bladder undergoing LC in three non-teaching rural hospitals of Kashmir Valley from Jan 2001 to Jan 2007. The cohort represented a sample of patients requiring LC, aged 13 to 78 (mean 47.2) years. Main outcome parameters included mortality, complications, re-operation, conversion to open procedure without resorting to IOC, reduction in costs borne by the hospital, and the duration of hospital ***: Twelve hundred and sixty-seven patients (976 females/291 males) underwent laparoscopic cholecystectomy. Twenty-three cases were converted to open procedures; 12 patients developed port site infection, nobody died because of the procedure. One patient had common bile duct (CBD) injury, 4 patients had biliary leak, and 4 patients had subcutaneous emphysema. One cholecystohepatic duct was detected and managed intraoperatively, 1 patient had retained CBD stones, while 1 patient had retained cystic duct stones. Incidental gallbladder malignancy was detected in 2 cases. No long-term complications were detected up to ***: LC can be performed safely even in non-teaching rural hospitals of a developing country provided proper equipment is available and the surgeons and other team members are well trained in the procedure. It is stressed that IOC is not essential to prevent biliary tract injuries and missed CBD stones. The costs to the patient and the hospital can be minimized by using reusable instruments, intracorporeal sutures, and condoms instead of titanium clips and endobags.

关键词： Laparoscopic cholecystectomy Intraoperative cholangiography