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Biosynthesis of Flower-Shaped CuO Nanostructures and Their Photocatalytic and Antibacterial Activities

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Nano-Micro Letters 2020年第2期12卷 224-234页

作者： Hafsa siddiqui MSQureshi Fozia Zia Haque Department of Physics Sha-Shib College of Science and ManagementBhopal 462030India Optical Nanomaterial Lab Department of PhysicsMaulana Azad National Institute of TechnologyBhopal 462003India

Copper oxide nanoflowers(CuO-NFs)have been synthesized through a novel green route using Tulsi leaves-extracted eugenol(4-allyl-2-methoxyphenol)as reducing *** results reveal the growth of crystalline singlephase CuO-NFs with monoclinic *** prepared CuO-NFs can effectively degrade methylene blue with 90%*** also show strong barrier against ***(27±2 mm)at the concentration of 100μg mL−1,while at the concentration of 25μg mL−1 weak barrier has been found against all examined bacterial *** results provide important evidence that CuO-NFs have sustainable performance in methylene blue degradation as well as bacterial organisms.

关键词： Copper oxide O.Sanctum Eugenol Biosynthesis Photocatalysis Antibacterial

Incidence and predictors of hypocalcemia in end-stage renal disease patients on denosumab therapy: A systematic review and metaanalysis

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World Journal of Meta-Analysis 2024年第3期12卷 68-78页

作者： Abdul Hannan siddiqui Misbah Shaikh Afia Salman Muhammad Ahmed Ali Fahim Fizzah Batool Tahreem Mari Sarah Musani Muneeb Fareed Rooma Rehan Amna Hassni Urooj Nizami Ayesha Amir Abdul moeed Salim R Surani Department of Internal Medicine Dow University of Health SciencesKarachi 74200SindhPakistan Department of Medicine&Pharmacology Texas A&M UniversityCollege StationTX 77843United States

BACKGROUND Denosumab inhibits the receptor activator of nuclear factor *** markedly increases bone mineral density and has been proven to reduce the risk of ***,numerous adverse effects,notably hypocalcemia,are prevalent in patients with end-stage renal disease(ESRD).AIM To analyze the incidence and predictors of hypocalcemia caused by denosumab compared to control in patients with *** We conducted this study in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-analyses ***,Scopus,Cochrane Central,and EMBASE were systematically searched from inception through March *** original studies investigating the effects of denosumab on patients with ESRD compared to control were *** primary outcomes of our study were the incidence of mild,severe,and very severe *** outcomes included serum levels of intact parathyroid hormone,calcium,and *** results were pooled and analyzed using a random-effects *** Seven articles comprising 3240 patients were included in our *** treated with denosumab had a significantly increased incidence of mild hypocalcemia[risk ratio(RR):2.79;95%confidence interval(CI):0.99-7.91;P=0.05;I^(2)=37%]and of very severe hypocalcemia(RR:9.58;95%CI:1.58-57.98;P=0.01;I^(2)=49%).However,an increase in the occurrence of severe hypocalcemia was non-significant(RR:4.23;95%CI:0.47-38.34;P=0.20;I^(2)=96%).Alternatively,denosumab showed a significant decrease in serum intact parathyroid hormone[mean difference(MD):-433.20,95%CI:-775.12 to-91.28,I2=98%,P=0.01],while there was a non-significant decrease in phosphate(MD:-0.47,95%CI:-1.35 to 0.41,I^(2)=88%,P=0.30)and calcium levels(MD:-0.33,95%CI:-0.95 to 0.29,I^(2)=94%,P=0.29).CONCLUSION Our study demonstrated that denosumab is significantly associated with mild and very severe hypocalcemia in patients with ESRD making it necessary to detect and prevent this side effect of treatmen

关键词： Denosumab End-stage renal disease Hypocalcemia Parathyroid hormone Dialysis

Investigation on the process parameters of TIG-welded aluminum alloy through mechanical and microstructural characterization

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Defence Technology（防务技术） 2021年第4期17卷 1234-1248页

作者： Muhammad Samiuddin Jing-long Li Muhammad Taimoor mo.ammad Nouman siddiqui Sumair Uddin siddiqui Jiang-tao Xiong State Key Laboratory of Solidification Processing Northwestern Polytechnical UniversityXi’an710072PR China Shaanxi Key Laboratory of Friction Welding Technologies Northwestern Polytechnical UniversityXi’an710072PR China Metallurgical Engineering Department NED University of Engineering and TechnologyKarachi75850Pakistan Department of Aeronautics and Astronautics Institute of Space TechnologyIslamabad44000Pakistan

Multi-pass TIG welding was conducted on plates(15×300×180 mm^(3))of aluminum alloy Al-5083 that usually serves as the component material in structural applications such as cryogenics and chemical processing *** formation and solidification cracking are the most common defects when TIG welding Al-5083 alloy,which is sensitive to the welding heat *** the experiment,the heat input was varied from 0.89 kJ/mm to 5 kJ/mm designed by the combination of welding torch travel speed and welding ***,micro-Vicker hardness and Charpy impact tests were executed to witness the impetus response of heat input on the mechanical properties of the *** inspection was performed to assess the joint’s quality and welding *** results show that all the specimens displayed inferior mechanical properties as compared to the base *** was established that porosity was progressively abridged by the increase of heat *** results also clinched that the use of medium heat input(1-2 kJ/mm)offered the best mechanical properties by eradicating welding defects,in which only about 18.26% of strength was *** yield strength of all the welded specimens remained unaffected indica ted no influence of heat *** melted zone(PMZ)width also affected by heat input,which became widened with the increase of heat *** grain size of PMZ was found to be coarser than the respective grain size in the fusion *** impact testing revealed that the absorbed energy by low heat input specimen(welded at high speed)was greater than that of high heat input(welded at low speed)because of low porosity and the formation of equiaxed grains which induce better impact ***(-196℃)impact testing was also performed and the results corroborate that impact properties under the cryogenic environment revealed no appreciable change after welding at designated heat ***,Macro and micro fractured surfaces of tensile and impact spe

关键词： Tungsten inert gas welding(TIG) Heat input Welding defects Tensile strength Charpy impact strength Micro-vicker hardness SEM

Recent Insights into Signaling Responses to Cope Drought Stress in Rice

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Rice science 2022年第2期29卷 105-117页

作者： Muhammad Mahran aslam Muhammad Abdul Rehman RASHID mo.ammad Aquil siddiqui Muhammad Tahir KHAN Fozia FARHAT Shafquat YASMEEN Imtiaz Ahmad KHAN Shameem RAJA Fatima RASOOL Mahboob Ali SIAL ZHAO Yan Nuclear Institute of Agriculture Tandojam Sindh 70060Pakistan Department of Bioinformatics and Biotechnology Government College University FaisalabadFaisalabad 38000Pakistan Research Center for Perennial Rice Engineering and Technology in Yunnan School of AgricultureYunnan UniversityKunming 650205China Department of Botany Government College for Women UniversityFaisalabad 38000Pakistan National Center of Bioinformatics Quaid-i-Azam UniversityIslamabad 45320Pakistan State Key Laboratory of Crop Biology Shandong Key Laboratory of Crop BiologyCollege of AgronomyShandong Agricultural UniversityTai’an 271018China

Drought is one of the hot topics needing urgent attention in the current era of climate *** massively disturbs the rice growth and productivity and is becoming a serious *** drought avoidance strategies in rice include stomatal closure,cellular adaptation and changes in root ***,the endogenous plant hormones(abscisic acid and jasmonic acid)and reactive oxygen species have paramount importance in drought tolerance in *** drought tolerance induces modification in biochemical,molecular and physiological properties of *** the molecular level,expression of several transcription-factors is modulated which further determine the activation of drought responsive gene *** activated protein kinases and Ca signaling pathways initiate an array of signaling cascade for mediating the gene expression in ***,conventional breeding methods combined with modern emerging techniques such as genetic engineering,to improve rice drought tolerance were *** review provided recent insights into major regulatory factors against drought stress,signaling mechanisms and molecular engineering strategies(including conventional transgenic and recent genome editing approaches)to induce drought tolerance in rice.

关键词： drought stress rice signaling response regulatory factor

Faster Metallic Surface Defect Detection Using Deep Learning with Channel Shuffling

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Computers, Materials & Continua 2023年第4期75卷 1847-1861页

作者： siddiqui Muhammad Yasir Hyunsik Ahn Department of Robot System Engineering Tongmyong UniversityBusan48520Korea School of Artificial Intelligence Tongmyong UniversityBusan48520Korea

Deep learning has been constantly improving in recent years,and a significant number of researchers have devoted themselves to the research of defect detection *** and recognition of small and complex targets is still a problem that needs to be *** authors of this research would like to present an improved defect detection model for detecting small and complex defect targets in steel *** steel strip production,mechanical forces and environmental factors cause surface defects of the steel ***,the detection of such defects is key to the production of high-quality ***,surface defects of the steel strip cause great economic losses to the high-tech *** far,few studies have explored methods of identifying the defects,and most of the currently available algorithms are not sufficiently ***,this study presents an improved real-time metallic surface defect detection model based on You Only Look Once(YOLOv5)specially designed for small *** the smaller features of the target,the conventional part is replaced with a depthwise convolution and channel shuffle *** assigning weights to Feature Pyramid Networks(FPN)output features and fusing them,increases feature propagation and the network’s characterization *** experimental results reveal that the improved proposed model outperforms other comparable models in terms of accuracy and detection *** precision of the proposed model achieved by mAP@0.5 is 77.5%on the Northeastern University,Dataset(NEU-DET)and 70.18%on the GC10-DET datasets.

关键词： Defect detection deep learning convolution neural network object detection YOLOv5 shuffleNetv2

Debye-Hckel solution for steady electro-osmotic flow of micropolar fluid in cylindrical microcapillary

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Applied Mathematics and Mechanics(English Edition) 2013年第11期34卷 1305-1326页

作者： A. A. siddiqui A. LAKHTAKIA Department of Basic Sciences Bahauddin Zakariya University Nanoengineered Metamaterials Group Department of Engineering Science and MechanicsPennsylvania State University University Park

Analytic expressions for speed, flux, microrotation, stress, and couple stress in a micropolar fluid exhibiting a steady, symmetric, and one-dimensional electro-osmotic flow in a uniform cylindrical microcapillary were derived under the constraint of the Debye-Hiickel approximation, which is applicable when the cross-sectional radius of the microcapillary exceeds the Debye length, provided that the zeta potential is sufficiently small in magnitude. Since the aciculate particles in a micropolar fluid can rotate without translation, micropolarity affects the fluid speed, fluid flux, and one of the two non-zero components of the stress tensor. The axial speed in a micropolar fluid intensifies when the radius increases. The stress tensor is confined to the region near the wall of the mi- crocapillary, while the couple stress tensor is uniform across the cross-section.

关键词： couple stress electro-osmosis microcapillary micropolar fluid microrota-tion steady flow

Petrogenesis of Late Cretaceous Volcanism in Kazhaba Area and Its Relationship with Mantle Plume Activity of Reunion Hotspot

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Journal of Earth Science 2017年第2期28卷 229-240页

作者： Rehanul Haq siddiqui Changqian Ma Balochistan University of lnformation Technology Engineering and Management Science Quetta 87650 Pakistan School of Earth Sciences China University of GeosciencesWuhan 430074 China

Basaltic pillow lavas near the Kazhaba village in Balochistan are found in the tectonic slivers of the Bagh complex： the melange zone beneath the Muslim Bagh ophiolite complex. These volcanics are mainly represented by alkali basalts. The petrography and chemistry suggest that these volcanic rocks belong to mildly to strongly alkaline, intra-plate volcanic rock series. Their low Mg~# and low Cr, Ni and Co contents suggest that the parent magma of these volcanics was not directly derived from a partially melted mantle source, but resulted fractionation in an upper level magma chamber, en-route to eruption. Their LILE and HFSE, enriched primordial mantle-normalized patterns with marked positive Nb anomalies further confirm their within-plate geochemical signatures and are consistent with an enriched mantle source. Their highly enriched LREE patterns and high（La/Yb）_N and（Ce/Yb）_N ratios suggest a partially melted garnet-lherzolite parent magma source. The Zr versus Zr/Y studies suggest that these volcanics were derived from about 15% partially melted enriched mantle source. It is suggested that these Late Cretaceous intra-plate volcanics may represent the mantle plume activity of the Reunion hotspot, and were erupted during the passage of Ceno-Tethys Ocean floor prior to the passage of Indian Plate over it.

关键词： Late Cretaceous Kazhabavolcanics Balochistan Pakistan

Development and assessment of a novel integrated system powered by parabolic trough collectors for combined power, heating and freshwater production

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Clean Energy 2023年第5期7卷 1110-1124页

作者： mohd Asjad siddiqui Eydhah Almatrafi Department of Mechanical Engineering Delhi Technological UniversityShahbad DaulatpurBawana RoadDelhi-110042India Department of Mechanical Engineering Faculty of Engineering at RabighKing Abdulaziz UniversityJeddah 21589Saudi Arabia K.A.CARE Energy Research and Innovation Center King Abdulaziz UniversityJeddah 21589Saudi ArabiaCenter of Excellence in Desalination TechnologyKing Abdulaziz UniversityJeddah 21589Saudi Arabia

Hybrid solar-based integrated systems represent a viable solution for countries with abundant solar radiation,as they provide energy needs in an environmentally friendly way,offering a sustainable and economically advantageous energy solution that utilizes a free source of ***,this research offers a thermodynamic evaluation of a novel integrated system driven by solar energy that aims to produce power,heating and *** integrated system consists of a parabolic trough collector that uses CO_(2) as its working fluid and implements the supercritical carbon dioxide cycle to generate power and *** integrated system also in-cludes an adsorption desalination system with heat recovery between the condenser and evaporator,which employs a cutting-edge material called an aluminium fumarate metal–organic framework to produce fresh *** the modelling of a novel system,an en-gineering equation solver,which is considered a reliable tool for thermodynamic investigations,is *** effectiveness of an integrated system is evaluated using a mathematical model and different varying parameters are examined to ascertain their influence on thermal and exergy efficiency,specific daily water production and gained output *** results revealed that the parabolic trough collector achieved a thermal efficiency of 67.2%and an exergy efficiency of 41.2%under certain ***,the thermal efficiencies for electrical and heating were obtained 24.68%and 9.85%,***,the specific daily water production was calculated,showing promising results and an increase from 7.1 to 12.5 m3/ton/day,while the gain output ratio increased from 0.395 to 0.62 when the temperature of hot water increased from 65°C to 85°C,under the selected conditions.

关键词： PTC thermodynamic analysis supercritical CO_(2)power cycle adsorption desalination cycle aluminium fumarate

An approach to Iocational marginal price based zonal congestion management in deregulated electricity market

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Frontiers in Energy 2016年第2期10卷 240-248页

作者： Md SARWAR Anwar Shahzad siddiqui Department of Electrical Engineering Jamia Millia Islamia (A Central University) New Delhi 110025 India

Congestion of transmission line is a vital issue and its management pose a technical challenge in power system deregulation. Congestion occurs in deregulated electricity market when transmission capacity is not sufficient to simultaneously accommodate all constraints of power transmission through a line. Therefore, to manage congestion, a locational marginal price （LMP） based zonal congestion management approach in a deregulated elec- tricity market has been proposed in this paper. As LMP is an economic indicator and its difference between two buses across a transmission line provides the measure of the degree of congestion, therefore, it is efficiently and reliably used in deregulated electricity market for conges- tion management. This paper utilizes the difference of LMP across a transmission line to categorize various congestion zones in the system. After the identification of congestion zones, distributed generation is optimally placed in most congestion sensitive zones using LMP difference in order to manage congestion. The performance of the proposed methodology has been tested on the IEEE 14-bus system and IEEE 57-bus system.

关键词： locational marginal price (LMP) distributed generation pool market deregulated electricity market,congestion management