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| 1 | Silymarin-laden PVP-PEG polymeric composite for enhanced aqueous solubility and dissolution rate: Preparation and in vitro characterization显示文摘The aim of this work was to develop, optimize and characterize a silymarin-laden polyvinylpyrrolidone(PVP)-polyethylene glycol(PEG) polymeric composite to resolve low aqueous solubility and dissolution rate problem of the drug. A number of silymarin-laden polymeric formulations were fabricated with different quantities of PVP K-30 and PEG 6000 by the solvent-evaporation method. The effect of PVP K-30 and PEG 6000 on the aqueous solubility and dissolution rate was investigated. The optimized formulation and its constituents were characterized using powder X-ray diffraction(PXRD), differential scanning calorimetry(DSC), scanning electron microscopy(SEM) and Fourier transform infrared spectroscopy(FTIR) techniques. Both the PEG 6000 and PVP K-30 positively affected the aqueous solubility and dissolution rate of the drug. In particular, a formulation consisting of silymarin, PVP K-30 and PEG 6000(0.25/1.5/1.5, w/w/w) furnished the highest solubility(24.3972.95 mg/mL) and an excellent dissolution profile( $100% in 40 min). The solubility enhancement with this formulation was $ 1150-fold as compared to plain silymarin powder. Moreover, all the constituents existed in the amorphous state in this silymarin-laden PVP-PEG polymeric composite. Accordingly, this formulation might be a promising tool to administer silymarin with an enhanced effect via the oral route. | Abid Mehmood Yousaf Usman Rashid Malik Yasser Shahzad Tariq Mahmood Talib Hussain | 2019 | Journal of Pharmaceutical Analysis2019，9，1： | 3 |
| 2 | Anatomical studies on water hyacinth (Eichhornia crassipes (Mart.) Solms) under the influence of textile wastewater显示文摘Water hyacinth (Eichhornia crassipes (Mart.) Solms) is a prolific free floating aquatic macrohpyte found in tropical and subtropical parts of the earth. The effects of pollutants from textile wastewater on the anatomy of the plant were studied. Water hyacinth exhibits hydrophytic adaptations which include reduced epidermis cells lacking cuticle in most cases, presence of large air spaces (7~50 μm), reduced vascular tissue and absorbing structures. Textile waste significantly affected the size of root cells.The presence of raphide crystals was noted in parenchyma cells of various organs in treated plants. | MAHMOOD Qaisar 郑平 SIDDIQI M. Rehan ISLAM Ejaz ul AZIM M. Rashid HAYAT Yousaf | 2005 | Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)2005，6，10： | 2 |
| 3 | Prediction of Anoxic Sulfide Biooxidation Under Various HRTs Using Artificial Neural Networks显示文摘Objective During present investigation the data of a laboratory-scale anoxic sulfide oxidizing (ASO) reactor were used in a neural network system to predict its performance. Methods Five uncorrelated components of the influent wastewater were used as the artificial neural network model input to predict the output of the effluent using back-propagation and general regression algorithms. The best prediction performance is achieved when the data are preprocessed using principal components analysis (PCA) before they are fed to a back propagated neural network. Results Within the range of experimental conditions tested, it was concluded that the ANN model gave predictable results for nitrite removal from wastewater through ASO process. The model did not predict the formation of sulfate to an acceptable manner. Conclusion Apart from experimentation, ANN model can help to simulate the results of such experiments in finding the best optimal choice for ASO based denitrification. Together with wastewater collection and the use of improved treatment systems and new technologies, better control of wastewater treatment plant (WTP) can lead to more effective maneuvers by its operators and, as a consequence, better effluent quality. | QAISAR MAHMOOD PING ZHENG DONG-LEI WU XU-SHENG WANG HAYAT YOUSAF EJAZ UL-ISLAM MUHAMMAD JAFFAR HASSAN GHULAM JILANI MUHAMMAD RASHID AZIM | 2007 | Biomedical and Environmental Sciences2007，20，5： | 1 |
| 4 | Fabrication of NiO coated SiO_2 and SiO_2 coated NiO for the removal of Pb^(2+) ions显示文摘We have prepared silica,SiO2coated NiO and NiO coated SiO2by sol-gel method.The physicochemical properties of the desired materials were investigated by surface charge properties,scanning electron microscopy(SEM),energy dispersive X-ray(EDX) spectroscopy,surface area measurements and X-ray diffraction(XRD) analyses.The point of zero charge(PZC) of the solid was determined by the salt addition method.In coated materials,two PZC values were noted representing the surface charge of their counterparts.The SEM image of SiO2coated NiO displays a uniform coating of silica on the surface of NiO whereas in case of NiO coated SiO2,a honeycomb like appearance was observed with highly porous structures.In the diffractograms of NiO,the characteristic peaks were suppressed in NiO coated silica however,no diffraction peak could be seen in SiO2coated NiO.Batch adsorption technique was applied for the removal of Pb2+ions from aqueous solution.The sorption trend for Pb2+ions was observed in the order of NiO coated SiO2> SiO2coated NiO > NiO > SiO2.This trend confirms that the coated materials have more sorption capacities than their parent counterparts. | Saba Noor Muhammad Waseem Umer Rashid Muhammad Anis-ur-Rehman Wajid Rehman Khalid Mahmood | 2014 | Chinese Chemical Letters2014，25，5： | 1 |
| 5 | Factors influencing clients in the selection of offshore software out- sourcing vendors: An exploratory study using a systematic literature review 显示文摘 | SIFFAT ULLAH KHAN MAHMOOD NIAZI RASHID AHMAD | 2011 | The Journal of Systems and Software2011，，84： | 1 |
| 6 | Insecticidal and antifungal activities of the seed kernel of Prunus domestica 显示文摘 | Ahmed R Mahmood A Rashid F | 2008 | J Trop Med Plant2008，8，2： | 1 |
| 7 | Flavonoid glycosides from Prunus armeniaca and the antibacterial activity of a crude extract显示文摘 | Rashid F Ahmed R Mahmood A | 2007 | Arch Pharm Res2007，30，8： | 1 |
| 8 | Low temperature conversion of plastic waste into light hydrocarbons显示文摘 | Sajid Hussain Shah Zahid Mahmood Khan Iftikhar Ahmad Raja Qaisar Mahmood Zulfiqar Ahmad Bhatti Jamil Khan Ather Farooq Naim Rashid Donglei Wu | 2010 | Journal of Hazardous Materials2010，，1： | 1 |
| 9 | Sorption and Desorption Behavior of FTuoroquinolone Antibiotics in an Agricultural Soil显示文摘Dear Editor, Fluoroquinolones (e.g., ciprofloxacin (CIP), enrofloxacin (ENR), and levofloxacin (LEV)) are an extensively used family of antibiotics prescribed for various infections;however, they are also increasingly used to promote livestock growth. After oral administTation, much of the parent compound is excreted via urine and feces and can enter the environment at a high concentration. These antibiotics are only partially removed in wastewater treatment plants and become a part of the environment through irrigation practices. | Luqman RIAZ Tariq MAHMOOD YANG Qingxiang Muhammad Wahab YASIR Audil RASHID Mark S. COYNE Elisa D’ANGELO | 2019 | Pedosphere2019，29，5： | 1 |
| 10 | Factors influencing clients in the selection of offshore software outsourcing vendors: An exploratory study using a systematic literature review显示文摘 | Siffat Ullah Khan Mahmood Niazi Rashid Ahmad | 2010 | The Journal of Systems & Software2010，，4： | 1 |
| 11 | Isolation and characterization of Pseudomonas stutzeri QZ1 from an anoxic sulfide-oxidizing bioreactor显示文摘 | Qaisar Mahmood Ping Zheng Baolan Hu Ghulam Jilani Muhammad Rashid Azim Donglei Wu Dan Liu | 2009 | Anaerobe2009，，4： | 1 |
| 12 | Efficient regeneration and antioxidant potential in regenerated tissues of Piper nigrum L.显示文摘 | Nisar Ahmad Hina Fazal Bilal Haider Abbasi Muhammad Rashid Tariq Mahmood Nighat Fatima | 2010 | Plant Cell Tissue and Organ Culture (PCTOC)2010，，1： | 1 |
| 13 | Synthesis and Characterization of Antimony(III) Complexes of Thioamides, and Crystal Structure of {[Sb(Imt)2Cl2]2(u2-lmt)}Cl2 (Imt=Imidazolidine-2-thione)显示文摘 | Ajaz Humayun Hussain Sajjad Altaf Muhammad Stoeckli-Evans Helen Isab Anvarhusein Mahmood Rashid Altaf Shahnila Ahmad Saeed | 2011 | Chinese Journal of Chemistry2011，29，2： | 1 |
| 14 | 杰赫勒姆河流域跨境区域日气象数据质量控制与同质化(英文)显示文摘Many studies such as climate variability, climate change, trend analysis, hydrological designs, agriculture decision-making etc. require long-term homogeneous datasets. Since homogeneous climate data is not available for climate analysis in Pakistan and India, the present study emphases on an extensive quality control and homogenization of daily maximum temperature, minimum temperature and precipitation data in the Jhelum River basin, Pakistan and India. A combination of different quality control methods and relative homogeneity tests were applied to achieve the objective of the study. To check the improvement after homogenization, correlation coefficients between the test and reference series calculated before and after the homogenization process were compared with each other. It was found that about 0.59%, 0.78% and 0.023% of the total data values are detected as outliers in maximum temperature, minimum temperature and precipitation data, respectively. About 32% of maximum temperature, 50% of minimum temperature and 7% of precipitation time series were inhomogeneous, in the Jhelum River basin. After the quality control and homogenization, 1% to 11% improvement was observed in the infected climate variables. This study concludes that precipitation daily time series are fairly homogeneous, except two stations(Naran and Gulmarg), and of a good quality. However, maximum and minimum temperature datasets require an extensive quality control and homogeneity check before using them into climate analysis in the Jhelum River basin. | Rashid MAHMOOD 贾绍凤 | 2016 | Journal of Geographical Sciences2016，26，12： | 1 |
| 15 | Natural Convection and Irreversibility of Nanofluid Due to Inclined Magnetohydrodynamics(MHD)Filled in a Cavity with Y-Shape Heated Fin:FEM Computational显示文摘This study explains the entropy process of natural convective heating in the nanofluid-saturated cavity in a heated fin andmagnetic field.The temperature is constant on the Y-shaped fin,insulating the topwall while the remaining walls remain cold.All walls are subject to impermeability and non-slip conditions.The mathematical modeling of the problem is demonstrated by the continuity,momentum,and energy equations incorporating the inclined magnetic field.For elucidating the flow characteristics Finite ElementMethod(FEM)is implemented using stable FE pair.A hybrid fine mesh is used for discretizing the domain.Velocity and thermal plots concerning parameters are drawn.In addition,a detailed discussion regarding generation energy by monitoring changes in magnetic,viscous,total,and thermal irreversibility is provided.In addition,line graphs are created for the u and v components of the velocity profile to predict the flow behavior.Current simulations assume the dimensionless representative of magnetic field Hartmann number Ha between 0 and 100 and a magnetic field inclination between 0 and 90 degrees.A constant 4% volume proportion of nanoparticles is employed throughout all scenarios. | Afraz Hussain Majeed Rashid Mahmood Sayed M.Eldin Imran Saddique S.Saleem Muhammad Jawad | 2024 | Computer Modeling in Engineering & Sciences2024，139，5： | 0 |
| 16 | A multi-purpose National Forest Inventory in Bangladesh:design,operationalisation and key results显示文摘Background:National forest inventory and forest monitoring systems are more important than ever considering continued global degradation of trees and forests.These systems are especially important in a country like Bangladesh,which is characterised by a large population density,climate change vulnerability and dependence on natural resources.With the aim of supporting the Government’s actions towards sustainable forest management through reliable information,the Bangladesh Forest Inventory(BFI)was designed and implemented through three components:biophysical inventory,socio-economic survey and remote sensing-based land cover mapping.This article documents the approach undertaken by the Forest Department under the Ministry of Environment,Forests and Climate Change to establish the BFI as a multipurpose,efficient,accurate and replicable national forest assessment.The design,operationalization and some key results of the process are presented.Methods:The BFI takes advantage of the latest and most well-accepted technological and methodological approaches.Importantly,it was designed through a collaborative process which drew from the experience and knowledge of multiple national and international entities.Overall,1781 field plots were visited,6400 households were surveyed,and a national land cover map for the year 2015 was produced.Innovative technological enhancements include a semi-automated segmentation approach for developing the wall-to-wall land cover map,an object-based national land characterisation system,consistent estimates between sample-based and mapped land cover areas,use of mobile apps for tree species identification and data collection,and use of differential global positioning system for referencing plot centres.Results:Seven criteria,and multiple associated indicators,were developed for monitoring progress towards sustainable forest management goals,informing management decisions,and national and international reporting needs.A wide range of biophysical and socioeconomic data were collected,and in some cases integrated,for estimating the indicators.Conclusions:The BFI is a new information source tool for helping guide Bangladesh towards a sustainable future.Reliable information on the status of tree and forest resources,as well as land use,empowers evidence-based decision making across multiple stakeholders and at different levels for protecting natural resources.The integrated socioeconomic data collected provides information about the interactions between people and their tree and forest resources,and the valuation of ecosystem services.The BFI is designed to be a permanent assessment of these resources,and future data collection will enable monitoring of trends against the current baseline.However,additional institutional support as well as continuation of collaboration among national partners is crucial for sustaining the BFI process in future. | Matieu Henry Zaheer Iqbal Kristofer Johnson Mariam Akhter Liam Costello Charles Scott Rashed Jalal Md.Akhter Hossain Nikhil Chakma Olaf Kuegler Hossain Mahmood Rajib Mahamud Mohammad Raqibul Hasan Siddique Khaled Misbahuzzaman Mohammad Main Uddin Mohammed Al Amin Farid Uddin Ahmed Gael Sola Md.Baktiar Siddiqui Luca Birigazzi Mahmudur Rahman Ilias Animon Saimunnahar Ritu Laskar Muqsudur Rahman Aminul Islam Heather Hayden Frida Sidik Mondal Falgoonee Kumar Rakibul Hassan Mukul Hossain Nishad Ariful Hoque Belal Asif Reza Anik Abdul Khaleque Md.Shaheduzzaman Syed Shahadat Hossain Tariq Aziz Md.Tauhidor Rahaman Ruhul Mohaiman Patrick Meyer Purnata Chakma A.Z.M.Manzoor Rashid Sourav Das Shrabanti Hira Mohammed Jashimuddin Mohammad Mahfuzur Rahman Karl Wurster Sarder Nasir Uddin Abul Kalam Azad S.M.Zahirul Islam Laurent Saint-André | 2021 | Forest Ecosystems2021，8，1： | 0 |
| 17 | Bandgap engineering to tune the optical properties of Be_xMg_(1-x)X(X=S, Se, Te) alloys显示文摘Structural, electronic, and optical properties of alloys Be_xMg_(1-x)X(X = S, Se, Te) in the assortment 0 < x < 1 were theoretically reported for the first time in zinc-blende(ZB) phase. The calculations were carried out by using full-potential linearized augmented plane wave plus local orbitals(FP-LAPW+lo) formalism contained by the framework of density functional theory(DFT). Wu-Cohen(WC) generalized gradient approximation(GGA), based on optimization energy,has been applied to calculate these theoretical results. In addition, we used Becke and Johnson(m BJ-GGA) potential,modified form of GGA functional, to calculate electronic structural properties up to a high precision degree. The alloys were composed with the concentrations x = 0.25, 0.5, and 0.75 in pursuance of ‘special quasi-random structures'(SQS)approach of Zunger for the restoration of disorder around the observed site of alloys in the first few shells. The structural parameters have been predicted by minimizing the total energy in correspondence of unit cell volume. Our alloys established direct band gap at different concentrations that make their importance in optically active materials. Furthermore, density of states was discussed in terms of the contribution of Be and Mg s and chalcogen(S, Se, and Te) s and p states and observed charge density helped us to investigate the bonding nature. By taking into consideration of immense importance in optoelectronics of these materials, the complex dielectric function was calculated for incident photon energy in the range 0-15 eV. | B Sabir N A Noor M Rashid Fasih Ud Din Shahid M Ramay Asif Mahmood | 2018 | Chinese Physics B2018，27，1： | 0 |
| 18 | BitmapAligner:Bit-Parallelism String Matching with MapReduce and Hadoop显示文摘Advancements in next-generation sequencer(NGS)platforms have improved NGS sequence data production and reduced the cost involved,which has resulted in the production of a large amount of genome data.The downstream analysis of multiple associated sequences has become a bottleneck for the growing genomic data due to storage and space utilization issues in the domain of bioinformatics.The traditional string-matching algorithms are efficient for small sized data sequences and cannot process large amounts of data for downstream analysis.This study proposes a novel bit-parallelism algorithm called BitmapAligner to overcome the issues faced due to a large number of sequences and to improve the speed and quality of multiple sequence alignment(MSA).The input files(sequences)tested over BitmapAligner can be easily managed and organized using the Hadoop distributed file system.The proposed aligner converts the test file(the whole genome sequence)into binaries of an equal length of the sequence,line by line,before the sequence alignment processing.The Hadoop distributed file system splits the larger files into blocks,based on a defined block size,which is 128 MB by default.BitmapAligner can accurately process the sequence alignment using the bitmask approach on large-scale sequences after sorting the data.The experimental results indicate that BitmapAligner operates in real time,with a large number of sequences.Moreover,BitmapAligner achieves the exact start and end positions of the pattern sequence to test the MSA application in the whole genome query sequence.The MSA’s accuracy is verified by the bitmask indexing property of the bit-parallelism extended shifts(BXS)algorithm.The dynamic and exact approach of the BXS algorithm is implemented through the MapReduce function of Apache Hadoop.Conversely,the traditional seeds-and-extend approach faces the risk of errors while identifying the pattern sequences’positions.Moreover,the proposed model resolves the largescale data challenges that are covered through MapReduce in the Hadoop framework.Hive,Yarn,HBase,Cassandra,and many other pertinent flavors are to be used in the future for data structuring and annotations on the top layer of Hadoop since Hadoop is primarily used for data organization and handles text documents. | Mary Aksa Junaid Rashid Muhammad Wasif Nisar Toqeer Mahmood Hyuk-Yoon Kwon Amir Hussain | 2021 | Computers, Materials & Continua2021，，9： | 0 |
| 19 | Structural and optical properties of Zn_(1-x)Ni_xTe thin films prepared by electron beam evaporation technique显示文摘Zn1-xNixTe thin films with different composition(x=0.0, 0.05, 0.10, 0.15 and 0.20) were deposited on glass substrate by electron beam evaporation technique followed by its characterization using advanced structural and optical analysis techniques. Structural properties of the prepared thin films were studied by X-ray diffraction(XRD). The XRD patterns revealed that the binary compounds transformed into a ternary compound with cubic structure having preferred orientation along the c-direction with(111) planes. Composition analysis of the films was determined by energy dispersive analysis of X-rays(EDAX) and found to be in agreement with the precursor composition. Optical properties such as extinction coefficient(k) and band gap energy of these films were examined by using a spectroscopic ellipsometer. It was found that the extinction coefficient(k) increased with the addition of Ni content in the alloy. In comparison, the band gap energy was also determined by using transmission spectra and found to be agreed with that of the ellipsometric results. These analyses confirm that the band gap energy decreases with the increase of Ni content in the alloy. | Arshad Mahmood R. Rashid U. Aziz A. Shah Zahid Ali Qaiser Raza Tanveer Ashraf | 2015 | Progress in Natural Science:Materials International2015，25，1： | 0 |
| 20 | Photoluminescence and structural analysis of wurtzite(ZnO)1-x(V2O5)x composite显示文摘This paper demonstrates the structural, vibrational and photoluminescence characteristics of(ZnO)_(1-x)(V_2O_5)_x(x = 0, 3, 6 and 9 mol%) composites semiconductor synthesized by using the solid state reaction method. X-ray diffraction(XRD) studies show that(ZnO)_(1-x)(V_2O_5)_x composites have the poly crystalline wurtzite structure of hexagonal Zn O. It is found from the XRD results that the lattice constants and the crystallite size increase while the dislocation density decreases with increase in doping concentration. The existence of E1(TO) and E2(high) Raman modes show that the Zn O still preserve wurtzite structure after doping vanadium oxide, which is in agreement with XRD results. Room temperature photoluminescence(PL) exhibit near band edge and broad deep level emission while indicating the suppression of deep level emission with the incorporation of V_2O_5 up to a certain concentration(x < 9). Moreover, the optical band gap increase with doping, which is accompanied by the blue shift of the NBE emission. | Amjid Iqbal Arshad Mahmood Q. Raza A. Shah Rashad Rashid Zahid Ali A. Malik U. Aziz | 2018 | Journal of Semiconductors2018，39，8： | 0 |
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