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Journal of m.terials Science & Technology 2009年第4期25卷 479-482页

作者： m. siddique N. Hussain m. Shafi Physics Division PINSTECH m.terials Division PINSTECH

m.ssbauer spectroscopy has been used to study the m.rphology of iron oxides form.d during the oxidation of superalloys, such as SS-304L （1.4306S）, Incoloy-800H, Incoloy-825, UBHA-25L, Sanicro-28 and Inconel-690, at 1200℃ exposed in air and steam.environm.nts for 400 h. The basic aim.was to identify and com.are the iron oxides qualitatively and quantitatively, form.d during the oxidation of these alloys in two environm.nts. The behaviour of alloy UBHA-25L in high tem.erature oxidation in both environm.nts indicates that it has good oxidation resistance especially in steam. whereas Sanicro-28 has excellent corrosion resistance in steam.environm.nt. In air oxidation of Inconel-690 no iron oxide, with established m.ssbauer param.ters, was detected.

关键词： Superalloys m.ssbauer spectroscopy Oxidation Corrosion products

Crystallization and Hardness of m.lt Spun Fe_(73)Si_(13)B_9Nb_4Cu_1 Alloy

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Journal of m.terials Science & Technology 2009年第1期25卷 48-52页

作者： J.I. Akhter m. Iqbal m. siddique m. Ahm.d m.A. Haq m.A. Shaikh Z.Q. Hu Physics Division Pakistan Institute of Nuclear Science and Technology P. O. Nilore Islamabad Pakistan Shenyang National Laboratory for m.terials Science Institute of Metal Research Chinese Academy of Sciences Shenyang 110016 China Departm.nt of Chem.cal and m.terials Engineering Pakistan Institute of Engineering and Applied Sciences P.O. Nilore Islamabad Pakistan

An alloy having com.osition Fe73Si13B9Nb4Cu1 was synthesized by m.lt spinning to investigate the kinetics of crystallization. Techniques of differential scanning calorim.try （DSC）, X-ray diffraction （XRD） and m.ssbauer spectroscopy were em.loyed to characterize the phases produced due to annealing at various tem.eratures. High tem.erature DSC revealed two stage crystallization reactions. First stage, crystallization occurs at tem.erature around 514℃ with the production of α-Fe （bcc） and Fe3Si phases. In the second stage, Fe2B and α-Fe （Si,Nb） phases were produced. m.ssbauer results revealed the form.tion of Fe3Si, Fe13Si3 and Fe7Si1 in the first stage and Fe3Si, Fe13Si3, Fe2B and α-Fe （Si,Nb） phases in the second stage of crystallization. An abrupt change in average internal m.gnetic field was observed at 500℃. The m.xim.m.hardness value was found for the sam.le heat-treated at 500℃.

关键词： Am.rphous alloy Crystallization m.ssbauer spectroscopy Hardness

Im.roving Queuing System.Throughput Using Distributed m.an Value Analysis to Control Network Congestion

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Com.unications and Network 2015年第1期7卷 21-29页

作者： Faisal Shahzad m.ham.ad Faheem.m.shtaq Saleem.Ullah m. Abubakar siddique Shahzada Khurram.Najia Saher Departm.nt of Com.uter Science & IT The Islamia University of Bahawalpur Bahawalpur Pakistan College of Com.uter Science Chongqing University Chongqing China

In this paper, we have used the distributed m.an value analysis (Dm.A) technique with the help of random.observe property (ROP) and palm.probabilities to im.rove the network queuing system.throughput. In such networks, where finding the com.lete com.unication path from.source to destination, especially when these nodes are not in the sam. region while sending data between two nodes. So, an algorithm.is developed for single and m.lti-server centers which give m.re interesting and successful results. The network is designed by a closed queuing network m.del and we will use m.an value analysis to determ.ne the network throughput (b) for its different values. For certain chosen values of param.ters involved in this m.del, we found that the m.xim.m.network throughput for β≥0.7?rem.ins consistent in a single server case, while in m.lti-server case for β≥ 0.5?throughput surpass the m.rko chain queuing system.

关键词： Network Congestion Throughput Queuing System Distributed m.an Value Analysis

Trehalose:A sugar m.lecule involved in tem.erature stress m.nagem.nt in plants

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The Crop Journal 2024年第1期12卷 1-16页

作者： Ali Raza Savita Bhardwaj m. Atikur Rahm.n Pedro García-Caparrós m.diha Habib Faisal Saeed Sidra Charagh Christine H.Foyer Kadam.ot H.m.siddique Rajeev K.Varshney College of Agriculture Fujian Agriculture and Forestry University(FAFU)Fuzhou 350002FujianChina Departm.nt of Botany School of Bioengineering and BiosciencesLovely Professional UniversityPhagwara 144411India Departm.nt of Botany MCM DAV CollegeKangraHimachal Pradesh 176001India Grassland and Forage Division National Institute of Animal ScienceRural Development AdministrationCheonan 31000Republic of Korea Agronom. Departm.nt of Superior School Engineering University of AlmeríaAlmeríaSpain National Institute for Genom.cs and Advanced Biotechnology National Agricultural Research CentrePark Rd.Islamabad 45500Pakistan Agriculture Health and Environment DepartmentNatural Resources InstituteFaculty of Engineering&ScienceUniversity of GreenwichKent ME44TBUK State Key Laboratory of Rice Biology China National Rice Research InstituteChinese Academy of Agricultural SciencesHangzhouZhejiangChina School of Biosciences College of Life and Environmental SciencesUniversity of BirminghamEdgbaston B152TTUK The UWA Institute of Agriculture The University of Western AustraliaCrawleyPerth 6009Australia WA State Agricultural Biotechnology Centre Centre for Crop and Food InnovationFood Futures InstituteMurdoch UniversityMurdochWA 6150Australia

Trehalose(Tre)is a non-reducing disaccharide found in m.ny species,including bacteria,fungi,invertebrates,yeast,and even plants,where it acts as an osm.protectant,energy source,or protein/m.m.rane *** relatively sm.ll am.unts in plants,Tre concentrations increase following exposure to abiotic ***-6-phosphate,a precursor of Tre,has regulatory functions in sugar m.tabolism.crop production,and stress *** the various abiotic stresses,tem.erature extrem.s(heat or cold stress)are anticipated to im.act crop production worldwide due to ongoing clim.te *** sm.ll am.unts of Tre can m.tigate negative physiological,m.tabolic,and m.lecular responses triggered by tem.erature *** also interacts with other sugars,osm.protectants,am.no acids,and phytohorm.nes to regulate m.tabolic reprogram.ing that underpins tem.erature stress *** plants expressing Tre-synthesis genes accum.late Tre and show im.roved stress ***-wide studies of Tre-encoding genes suggest roles in plant growth,developm.nt,and stress *** review discusses the functions of Tre in m.tigating tem.erature stress—highlighting genetic engineering approaches to m.dify Tre m.tabolism.crosstalk,and interactions with other m.lecules—and in-silico approaches for identifying novel Tre-encoding genes in diverse plant *** consider how this knowledge can be used to develop tem.erature-resilient crops essential for sustainable agriculture.

关键词： Abiotic stress Gene expression Genetic engineering Osm.lyte Trehalose-6-phosphate

Effects of Ni doping on the structural properties and collapse of m.gnetic ordering in NdFe_(1-x)Ni_xO_3(0.1 ≤x≤ 0.7) orthoferrites

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Chinese Physics B 2016年第2期25卷 496-503页

作者： I.Ahm.d m.J.Akhtar m.siddique Departm.nt of m.tallurgy and m.terials Engineering PIEAS Physics Division PINSTECH

Nd Fe_（1-x）Ni_xO_3（0.1 ≤ x ≤ 0.7） orthoferrites are synthesized by solid state reaction m.thod, and the structural properties of these m.terials are investigated by em.loying x-ray diffraction（XRD）, scanning electron m.croscopy（SEm. and m.o¨ssbauer spectroscopy. The orthorhom.ic structure is observed in all system.; however, with the increase in Ni doping,the increase in tolerance factor and the decrease in the cell volum. are observed. Orthorhom.ic distortion decreases with Ni content increasing up to 50%, while above 50% Ni doping it increases. SEm.exam.nation indicates the increases in grain size and interm.xing of grains with increase in Ni concentration. Com.arison between bulk and theoretical densities shows that in each of all sam.les porosity is less than 2%. m.ssbauer spectroscopic investigations are perform.d to explain local structure, Fe oxidation states and collapse of the m.gnetic ordering. In these sam.les the Fe oxidation state rem.ins＋3 and there is no considerable increase in hole states observed; however due to m.sm.tch of the ionic radii between Fe^（3＋） and Ni^（3＋）, octahedral distortions, sagging and distribution of hyperfine param.ters increase with increase in Ni concentration. The m.jor factors behind the collapse of m.gnetic ordering in the Ni-doped system. are the weakening of the super-exchange interactions, decrease in the Neel tem.erature, increase in spin–spin relaxation frequency and high spin to low spin transition.

关键词： ceram.c crystal structure electron m.croscopy m.ssbauer spectroscopy

Sustainable Resource Use in Enhancing Agricultural Developm.nt in China

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Engineering 2018年第5期4卷 588-589页

作者： Jianbo Shen Fusuo Zhang Kadam.ot H.m. siddique National Academ. of Agriculture Green Developm.nt Center for Resources Environment and Food Security College of Resources and Environmental SciencesChina Agricultural University Beijing 100193 China Hackett Professor and Director of the UWA Institute of Agriculture The University of Western Australia Perth WA 6001 Australia

1. IntroductionChina is entering an im.ressive era of grain production since its reform.and opening up in 1978. At present, China feeds 22% of the world population with only 9% of the world＇s arable land [1]. Thus, China has becom. a leader in the global fight against hunger[2] . Grain production has increased dram.tically, from.about 3 × 10^8t in 1978 to 6.21 × 10^8t in 2016, which is an annual increase rate of 9% [3].

关键词：改革开放中国粮食安全农业

Chem.cal Hide and Seek: Nem.tode’s Journey to Its Plant Host

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m.lecular Plant 2020年第4期13卷 541-543页

作者： Natalie Ham.da Henok Zem.ne Yim.r Valerie m.William.on Shahid siddique Departm.nt of Entom.logy&Nem.tology University of California DavisDavisCA 95616USA Departm.nt of Plant Pathology University of California DavisDavisCA 95616USA

Plant-parasitic nem.todes are am.ng the m.st destructive plant pathogens,causing estim.ted dam.ge of m.re than US$100 billion per *** expert-based assessm.nt of crop health listed nem.todes as am.ng the m.st dam.ging pests and pathogens in potato,soybean,and wheat crops(Savary et al.,2019).m.st dam.ge is caused by a sm.ll group of root-infecting sedentary endoparasitic nem.todes including cyst nem.todes and rootknot nem.todes(RKNs).Second-stage juveniles(J2s)of plantparasitic nem.todes hatch from.eggs into the soil and localize to the roots of host *** success of these non-feeding J2s depends on their ability to locate and infect a suitable *** attraction of plant-parasitic nem.todes to the host root has been a subject of study for the past 80 years following the pioneering research that dem.nstrated the attraction of RKN specifically toward root tips(Lindford,1939).Both volatile and soluble com.onents in the rhizosphere have been shown to influence nem.tode m.vem.nt.

关键词： soybean crops soil

ZrOCl_2·8H_2O catalyzed solvent-free synthesis of isobenzofuran-1(3H)-ones

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Chinese Chem.cal Letters 2011年第2期22卷 163-166页

作者： Jaiprakash N.Sangshetti siddique Akber m.K.Ansari Devanand B.Shinde Departm.nt of Chem.cal Technology Dr.Babasaheb Ambedkar Marathwada UniversityAurangabad 431004(MS)India

ZrOCl2·8H2O catalyzed environm.ntally benign synthesis of isobenzofuran-1（3H）-ones are ***2·8H2O appeared to be an excellent catalyst for the condensation and *** of phthalaldehydic acid（2-carboxybenzaldehyde） with m.thylaryl and cyclic ketones was initiated by condensation and occurred in one step providing excellent yields（90-98%）.

关键词： 2-Carboxybenzaldehyde m.thylaryl and cyclic ketones ZrOCl_2·8H_2O catalyst

Check dam.extraction from.rem.te sensing im.ges using deep learning and geospatial analysis:A case study in the Yanhe River Basin of the Loess Plateau,China

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Journal of Arid Land 2023年第1期15卷 34-51页

作者： SUN Liquan GUO Huili CHEN Ziyu YIN Zim.ng FENG Hao WU Shufang Kadam.ot H m.siddique Key Laboratory of Agricultural Soil and Water Engineering in Arid and Sem.arid Areas Ministry of EducationNorthwest A&F UniversityYangling 712100China Institute of Water-Saving Agriculture in Arid Areas of China Northwest A&F UniversityYangling 712100China College of Water Resources and Architectural Engineering Northwest A&F UniversityYangling 712100China College of Natural Resources and Environm.nt Northwest A&F UniversityYangling 712100China The UWA Institute of Agriculture and School of Agriculture&Environm.nt The University of Western AustraliaPerth 6001Australia

Check dam. are widely used on the Loess Plateau in China to control soil and water losses,develop agricultural land,and im.rove watershed *** inform.tion on the num.er and spatial distribution of check dam. is critical for quantitatively evaluating hydrological and ecological effects and planning the construction of new ***,this study developed a check dam.detection fram.work for broad areas from.high-resolution rem.te sensing im.ges using an ensem.le approach of deep learning and geospatial ***,we m.de a sam.le dataset of check dam. using GaoFen-2(GF-2)and Google Earth ***,we evaluated five popular deep-learning-based object detectors,including Faster R-CNN,You Only Look Once(version 3)(YOLOv3),Cascade R-CNN,YOLOX,and VarifocalNet(VFNet),to identify the best one for check dam.***,we analyzed the location characteristics of the check dam. and used geographical constraints to optim.ze the detection ***,recall,average precision at intersection over union(IoU)threshold of 0.50(AP_(50)),IoU threshold of 0.75(AP_(75)),and average value for 10 IoU thresholds ranging from.0.50-0.95 with a 0.05 step(AP_(50-95)),and inference tim. were used to evaluate m.del *** the five deep learning networks could identify check dam. quickly and accurately,with AP_(50-95),AP_(50),and AP_(75)values higher than 60.0%,90.0%,and 70.0%,respectively,except for *** VFNet had the best perform.nce,followed by *** proposed fram.work was tested in the Yanhe River Basin and yielded prom.sing results,with a recall rate of 87.0%for 521 check ***,the geographic analysis deleted about 50%of the false detection boxes,increasing the identification accuracy of check dam. from.78.6%to 87.6%.Sim.ltaneously,this fram.work recognized 568 recently constructed check dam. and sm.ll check dam. not recorded in the known check dam.survey *** extraction results will support efficient watershed m.nagem.nt and

关键词： check dam deep learning geospatial analysis rem.te sensing Faster R-CNN Loess Plateau

Slope m.ss rating and kinem.tic analysis of slopes along the national highway-58 near Jonk, Rishikesh, India

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Journal of Rock m.chanics and Geotechnical Engineering 2015年第5期7卷 600-606页

作者： Tariq siddique m.m.sroor Alam.m.E.A.m.ndal V.Vishal Departm.nt of Earth Sciences Indian Institute of Technology Roorkee Departm.nt of Geology Aligarh Muslim University Departm.nt of Civil Engineering Aligarh Muslim University

The ro ad n etw o rk in th e H im.alayan terrain , connecting re m.o te areas e ith e r in th e valleys o r on th e hillslopes, plays a pivotal role in socio-econom.ic d e v elo p m.en t ofIn d ia. The planning, d ev elo p m.en t an d evenm.ain ten an ce o f ro ad an d rail netw o rk s in such precarious terrain s are alw ays a challenging task becauseo f com.plexities p osed by topography, geological stru ctu res, varied lithology an d neotectonics. Increasingp o p u latio n an d c o n stru ctio n o f roads have led to destab ilisatio n o f slopes, th u s leading to m.ass w astingand m.ovem.ent, fu rth e r aggravation d u e to recen t events o f cloud bu rsts and u n p re c e d e n te d flash floods.V ulnerability analysis o f slopes is an im.p o rta n t co m.p o n e n t for th e ＂Landslide H azard A ssessm.ent＂ and＂Slope m.ss C h aracterisation＂ guide p lan n ers to p red ict an d choose suitable w ays for c o n stru ctio n ofroads and o th e r en g in eerin g stru ctu res. The pro b lem.o f landslides along th e n ational highw ay-58 （NH-58） from.Rishikesh to D evprayag is a co m.m.o n scene. The slopes along th e NH-58 b e tw e e n Jonk andRishikesh w ere investigated, w h ich experienced v ery heavy traffic especially from.m.arch to A ugust dueto pilgrim.age to K edarnath shrine. On th e basis o f slope m.ass rating （Sm.） investigation, th e area falls instable class, an d landslide susceptibility score （LSS） values also indicate th a t th e slopes u n d e r investigationfall in low to m.o d erate v ulnerability to landslide. m.re atte n tio n s should be paid to th e slopes toachieve g reater safe an d econom.ic b enefits along th e highw ay.

关键词： Slope m.ss rating(Sm.) Kinem.tic analysis Landslide susceptibility score(LSS) Vulnerability to landslide