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Efficiency Performances of LVDC Supplies for Residential Building

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Computer Systems Science & Engineering 2023年第5期45卷 2171-2186页

作者： anis Ammous Ammar Alsaedi Ahmed N.m.Alahmadi Fahad Alharbi Kaiçar Ammous Department of Electrical Engineering College of Engineering and Islamic ArchitectureUmm Al Qura UniversityMakkahKSA

The Low Voltage Direct Current(LVDC)architecture gives higher benefits over the classic low-voltage alternating current(LVAC)supply *** has fewer energy conversion stages,is compatible with renewable energy sources,and is easier to integrate with *** this paper,an LVDC supply concept is proposed and compared with currently used conventional photovoltaic(PV)systems in terms of *** new LVDC photovoltaic system behavior is validated using LTspice modeling *** findings of this work prove that the concept of LVDC supply is highly attractive when the electricity produced by the photovoltaic is used onsite in the *** carry out an efficient system,the PV power mounted in the houses should be precisely rated with respect to the magnitude of the load energy *** proposed three house examples to verify the superiority of our proposed system in comparison with the traditional LVDC PV *** annual analysis of the energy saved by the studied systems was carried *** main benefit of the suggested LVDC supply is the short way taken by the energy generated by the photovoltaic system to supply DC loads within daytime *** registered increase in system efficiency reached more than 20%for the proposed LVDC system.

关键词： Sustainable energy energy saving power conversion solar PV system

Investigation of an inflammatory viral disease HBV in cardiac patients through polymerase chain reaction

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Advances in Bioscience and Biotechnology 2012年第4期3卷 417-422页

作者： Farina Saher Khalil ur rehman Javed A.Qureshi muhammad Irshad Hafiz m.Nasir Iqbal Department of Chemistry and Biochemistry University of AgricultureFaisalabadPakistan Health Biotechnology Division National Institute for Biotechnology and Genetic Engineering(NIBGE)FaisalabadPakistan Department of microbiology University of AgricultureFaisalabadPakistan

In the present study 100 cardiac patients were randomly selected from the cardiology ward, Allied Hospital Faisalabad, Pakistan. All the selected cases were analysed for different parameters like Hepatitis B surface Antigen (HbsAg), Bilirubin, Alkaline phosphatase, serum glutamic pyruvic transaminase, and serum glutamic-oxaloacetic transaminase. Out of total 16% patients were lying in the age of 21-30 year, 25% in the age of 31-40 year, 35% in the age of 41-50 year, 19% in the age of 51-60 years and 5% patients in the age of 61-70 years. No subject was found positive in age group 21-30 years patients. 35% patients have higher value of SGPT while, other 26% were with higher value of SGOT. Rest of the 32 and 24% have higher ALP and Bilirubin levels, respectively. Assay profile revealed that ALP level was increased with increasing age, body mass index, Creactive protein, diabetes, smoking, sex, serum uric acid, lead, cadmium, hypercholesterolemia, lesion of liver and cardiovascular disease. The serum of the eight HbsAg positive cases were tested for the presence of HBV through PCR and no sample was found positive. At the end of the study, PCR amplified samples were run on 1.5% agarose gel to confirm the case.

关键词： HBV Liver Inflammation LFTs PCR Agarose Gel Electrophoresis

Landslide mapping and analysis along the China-Pakistan Karakoram Highway based on SBAS-InSAR detection in 2017

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Journal of mountain Science 2021年第10期18卷 2540-2564页

作者： SU Xiao-jun ZHANG Yi mENG Xing-min YUE Dong-xia mA Jin-hui GUO Fu-yun ZHOU Zi-qiang rehman mohib ur KHALID Zainab CHEN Guan ZENG Run-qiang ZHAO Fu-meng College of Earth and Environmental Sciences Lanzhou UniversityLanzhou 730000China School of Earth Sciences Lanzhou UniversityLanzhou 730000China Gansu Tech Innovation Centre for Environmental Geology and Geohazard Prevention Lanzhou 730000China Geological Environment monitoring Institute of Gansu Province Lanzhou 730050China Institute of Geological Hazards Prevention Gansu Academy of SciencesLanzhou 730000China

The Karakoram Highway(KKH),a part of the China–Pakistan Economic Corridor(CPEC),is a major highway connecting northern Pakistan to *** inventorying and analysis of landslides along KKH are challenging because of poor accessibility,vast study area,limited availability of ground-based datasets,and the complexity of landslide processes in the *** order to preserve life,property,and infrastructure,and to enable the uninterrupted and efficient operation of the KKH,it is essential to strengthen measures for the prevention and control of geological *** the present study,SBASInSAR(Small Baseline Subsets-Interferometric Synthetic Aperture Radar)was used to process 150 scenes of Sentinel 1-A images in the year 2017 along the Karakoram Highway.A total of 762 landslides,including 57 complex landslides,126 rock falls,167 debris slides,and 412 unstable slopes,ranging in size between 0.0017 and 10.63 km2 were ***,this study also gains an inventory of 40 active glacier movements in this *** categorization,displacements characteristics,spatial distribution,and their relationship with various contributing factors have been successfully investigated along the entire KKH using image interpretation and frequency-area *** criteria adopted for landslides categorization is presented in the *** results showed that the 2-D ground deformation derived in Hunza valley echoes well with the general regional landslides *** spatial distribution analysis revealed that there are clumped distributions of landslides in the Gaizi,Tashkurgan,and Khunjerab in China,as well as in Hunza valley,and north of Chilas city in *** results indicated that these landslides mainly occur on south-facing slopes with a slope angle of 20°–45°and elevation relief of 550–2,100 *** development is also related to low vegetation cover and weathering effects in mountain ***,our study provides scientific data

关键词： Landslides mapping Slope deformation Identification Landslide development Area development ratio SBAS-InSAR Karakoram Highway

Assessment of the Contribution of Foliar Trichomes towards Allelopathy

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Phyton-International Journal of Experimental Botany 2020年第2期89卷 291-301页

作者： Waseem mushtaq m.B.Siddiqui Hesham F.Alharby Khalid rehman Hakeem Allelopathy Laboratory Department of BotanyAligarh Muslim UniversityAligarh202002India Department of Biological Sciences Faculty of ScienceKing Abdulaziz UniversityJeddahSaudi Arabia Princess Dr Najla Bint Saud Al-Saud Center for Excellence Research in Biotechnology King Abdulaziz UniversityJeddahSaudi Arabia

Plant trichomes vary in their structure and cellular *** trichomes contain a bulk of specific(secondary)metabolites of diverse *** are connected with various adaptive processes,which include protection against herbivores and pathogens as *** study investigates the allelopathic contribution of structures present on the leaf surface of Nicotiana plumbaginifolia *** seedling growth of Cicer arietinum *** infusion obtained after dipping Nicotiana leaves in Dichloromethane(DCm)for 10 seconds(s)was the most phytotoxic among all the *** observed inhibition in Cicer growth was not only dependent on type of infusion but also the *** electron microscopy of the leaf samples showed the modifications in trichomes under the influence of the different concentration of *** trichomes were most dehydrated at 10 seconds in DCm,suggesting their role for the observed *** study on the biochemistry of trichomes and their phytotoxicity may develop highly valuable objects for plant metabolic engineering.

关键词： Allelopathy phytotoxicity secondary metabolites medicinal plants

Surface-type nonvolatile electric memory elements based on organic-on-organic CuPc-H_2Pc heterojunction

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Chinese Physics B 2015年第11期24卷 328-332页

作者： Khasan S.Karimov Zubair Ahmad Farid Touati m.mahroof-Tahir m.muqeet rehman S.Zameer Abbas Ghulam Ishaq Khan Institute of Engineering Science and Technology Center for Innovative Development of Science and New Technologies Department of Electrical Engineering College of Engineering Qatar University Department of Chemistry and Earth Sciences Qatar University

A novel surface-type nonvolatile electric memory elements based on organic semiconductors CuPc and H2Pc are fabricated by vacuum deposition of the CuPc and H2Pc films on preliminary deposited metallic （Ag and Cu） electrodes. The gap between Ag and Cu electrodes is 3040μm. For the current-voltage （I-V） characteristics the memory effect, switching effect, and negative differential resistance regions are observed. The switching mechanism is attributed to the electric-field-induced charge transfer. As a result the device switches from a low to a high-conductivity state and then back to a low conductivity state if the opposite polarity voltage is applied. The ratio of resistance at the high resistance state to that at the low resistance state is equal to 120-150. Under the switching condition, the electric current increases -- 80-100 times. A comparison between the forward and reverse I-V characteristics shows the presence of rectifying behavior.

关键词： heterojunction nonvolatile memory organic-on-organic CuPc H2Pc

Reinforcement of Hydroxypropylcellulose Films by Cellulose Nanocrystals in the Presence of Surfactants

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Chinese Journal of Polymer Science 2016年第11期34卷 1301-1301,1302-1310页

作者： Noor rehman maria Inez G.de miranda Simone m.L.Rosa Clara I.D.Bica Instituto de Quimica Universidade Federal do Rio Grande do Sul 91501-970 Porto Alegre/RS Brazil Department of Chemistry Shaheed Benazir Bhutto University 18000 Sheringal Dir (Upper) KPK Pakistan Instituto de Ciencias Exatas e Tecnologicas Universidade FEEVALE Campus Ⅱ 93525-075 Novo Hamburgo/RS Brazil

Hydroxypropylcellulose（HPC） films were prepared by casting with cellulose nanocrystals in the presence of anionic surfactant sodium dodecylsulphate（SDS） and cationic surfactant hexadecyltrimethyl ammonium bromide（CTAB）. The cellulose nanocrystals were isolated from maize straw, a biomass source produced in huge quantities as an agrowaste in Brazil. These bionanocomposite films had good transparency and their surface hydrophilic character was evidenced by static contact angle measurements. Thermogravimetry（TGA） measurement revealed that nanocrystals and surfactants changed the thermal stability of the HPC films. Dynamic mechanical analysis（DmA） showed that the tensile storage and loss moduli of the HPC films increased by increasing the contents of cellulose nanocrystals and surfactants, especially in the case of CTAB. This good reinforcing effect of HPC matrix can be explained as due to electrostatic attractive interactions brought about by the presence of CTAB and the nanocrystals.

关键词： surfactant attractive hydrophilic cellulose reinforcing modulus cationic electrostatic tensile ammonium

Salt Stress Threshold in millets:Perspective on Cultivation on marginal Lands for Biomass

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Phyton-International Journal of Experimental Botany 2021年第1期90卷 51-64页

作者： Naveed Ul mushtaq Seerat Saleem Aadil Rasool Wasifa Hafiz Shah Khalid rehman Hakeem Reiaz Ul rehman Department of Bioresources School of Biological SciencesUniversity of KashmirSrinagar190006India Department of Biological Sciences Faculty of ScienceKing Abdulaziz UniversityJeddah21589Saudi Arabia

millets hold an immense assurance for food safety and nourishment amid ever-rising agricultural expenses and climate *** are healthful,have supplementary wellbeing profit and need remarkably fewer effort overheads for crop *** characters draw attention to millets as a plant of preference for the humankind in the course of emergent alarm about environmental *** have the prospect to provide biomass and thus bioenergy,reduced carbon emission,carbon footprint and sustainable modern *** the rate of expansion in budding countries is increasing day by day,the scarcity of energy is a big panic and there is a mounting turn in the direction and rehearsal of waste and biomass as an energy ***,at least 20%of total irrigated land has been injured by salt and 1.5 million hectares is taken away of cultivation every ***,in future,we will have a requirement of efficient crops and utilisation of marginal lands for *** is an answer to the efficient *** are subjected to various environmental pressures(high/low temperature,heavy metal,salinity,pesticides,etc.)as well as biotic stresses(virus,bacteria,fungi,etc.)and millets are not an exception to *** are categorised as glycophytes and can tolerate average salt threshold of about 6(ECe)(dS/m)with some variation from specie to *** in the salt concentrations can lead to retarded growth and development,thus need for mitigants arise to reduce such *** mitigants to overcome the stress levels include proline,polyamine and betaines,Na2SeO3,H2S,KNO3,mg(NO3)2,etc.

关键词： Sustainable development proline salt tolerance biomass food security

Efficient Facial Recognition Authentication Using Edge and Density Variant Sketch Generator

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Computers, materials & Continua 2022年第1期70卷 505-521页

作者： Summra Saleem m.Usman Ghani Khan Tanzila Saba Ibrahim Abunadi Amjad rehman Saeed Ali Bahaj Department of Computer Science UETLahorePakistan Al-Khwarizmi Institute of Computer Science UETLahorePakistan Artificial Intelligence&Data Analytics Lab CCIS Prince Sultan University Riyadh11586Saudi Arabia mIS Department College of Business Administration Prince Sattam Bin Abdulaziz UniversityAlkharjSaudi Arabia

Image translation plays a significant role in realistic image synthesis,entertainment tasks such as editing and colorization,and security including personal *** Edge GAN,the major contribution is attribute guided vector that enables high visual quality content *** research study proposes automatic face image realism from freehand sketches based on Edge *** propose a density variant image synthesis model,allowing the input sketch to encompass face features with minute *** density level is projected into non-latent space,having a linear controlled function *** assists the user to appropriately devise the variant densities of facial sketches and image *** data set of Large Scale CelebFaces Attributes(ClebA),Labelled Faces in theWild(LFWH),Chinese University of Hong Kong(CHUK),and self-generated Asian images are used to evaluate the proposed *** solution is validated to have the capability for generating realistic face images through quantitative and qualitative results and human evaluation.

关键词： Edge generator density variant sketch generator face translation recognition residual block

Characteristic spectral studies and in vitro antifungal activity of some Schiff bases and their organotin (Ⅳ) complexes

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Chinese Science Bulletin 2004年第2期49卷 119-122页

作者： Wajid rehman musa Kaleem Baloch Bakhtiar muhammad Amin Badshah Khalid m.Khan Department of Chemistry Gomal University Dera Ismail KhanPaki-stanDepartment of Chemistry Gomal UniversityDera Ismail KhanPaki-stanDepartment of Chemistry Gomal UniversityDera Ismail KhanPaki-stanDepartment of ChemistryQuaid-e-Azam UniversityIslamabadPaki-stanHEJ Research Institute University of KarachiPakistan

The synthesis and in vitro antifungal activity of some Schiff bases and their Sn (Ⅳ) complexes has been tested against plant pathogenic fungi and it is found that they possess excellent fungicidal activity. On the basis of ^1H-, ^13C-,^119Sn NmR-, ^119Sn mǒssbauer, IR and Elemental analysis the tetrahedral geometry is proposed for the synthesized compounds.

关键词：特征光谱抗真菌活性有机锡有机金属化合物