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Frontiers of Structural and Civil Engineering 2019年第3期13卷 674-685页

作者： Tanvi SINGH Mahesh PAL v.k.arora Department of Civil Engineering National Institute of TechnologyKurukshetraHaryana 136119India

M5 model tree,random forest regression(RF)and neural network(NN)based modelling approaches were used to predict oblique load carrying capacity of batter pile groups using 247 laboratory experiments with smooth and rough pile *** length(L),angle of oblique load(a),sand density(ρ),number of batter piles(B),and number of vertical piles(v)as input and oblique load(Q)as output was *** suggest improved performance by RF regression for both pile groups.M5 model tree provides simple linear relation which can be used for the prediction of oblique load for field data *** developed using RF regression approach with smooth pile group data was found to be in good agreement for rough piles *** based approach was found performing equally well with both smooth and rough *** analysis using all three modelling approaches suggest angle of oblique load(a)and number of batter pile(B)affect the oblique load capacity for both smooth and rough pile groups.

关键词： batter piles oblique load test neural network M5 model tree random forest regression ANOvA

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燃烧加热炉性能的验证

化工设备设计 1986年第5期 35-39页

作者： v.k.arora 周立平杭州制氧机厂

本文所介绍的方法能迅速地对直接燃烧加热炉进行热平衡计算。采用这种方法预测运转中的加热炉效率具有相当的精度,而所需的运转数据是很基本的。因此,该法简单易行。本文中所介绍的曲线(图2、图3)有助于验证下列参数: 1.加热炉的热量平... 详细信息

本文所介绍的方法能迅速地对直接燃烧加热炉进行热平衡计算。采用这种方法预测运转中的加热炉效率具有相当的精度,而所需的运转数据是很基本的。因此,该法简单易行。本文中所介绍的曲线(图2、图3)有助于验证下列参数: 1.加热炉的热量平衡,即热效率或废气出

关键词：加热炉热平衡热量低热值出口温度烟道热处理炉热力学平衡低位发热量除尘设备绝热火焰温度废气温度

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火焰炉热量平衡

工业炉 1983年第6期 43-43页

作者： v.k.arora 陈文灏南京化学工业公司设计院

下面二个图可预测预热空气和过量空气对火焰加热炉烟道气温度和热焓的影响。用该图所需要的已知条件是:燃料的低热值(LHv);加热炉热效率和加热炉表面热损失。举例说明如何使用该图。

关键词：烟道气 LHv 过量空气加热炉热处理炉

Association between Exposure to Metals during Pregnancy,Childhood Gut Microbiome,and Risk of Intestinal Inflammation in Late Childhood

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Environment & Health 2024年第10期2卷 739-749页

作者： vishal Midya Manasi Agrawal Jamil M.Lane Chris Gennings Leonid Tarassishin Libni A.Torres-Olascoaga Joseph Eggers Jill k.Gregory Mellissa Picker Inga Peter Jeremiah J.Faith Manish arora Martha M.Tellez-Rojo Robert O.Wright Jean-Frederic Colombel Shoshannah Eggers Department of Environmental Medicine and Climate Science Icahn School of Medicine at Mount SinaiNew York 10029-6574New YorkUnited States Division of Gastroenterology Icahn School of Medicine at Mount SinaiNew York 10029-6574New YorkUnited States Center for Molecular Prediction of Inflammatory Bowel Disease(PREDICT) Department of Clinical MedicineAalborg UniversityCopenhagen 9220Denmark Department of Genetics and Genomic Sciences Icahn School of MedicineNew York 10029-6574New YorkUnited States Center for Research on Nutrition and Health National Institute of Public HealthCuernavaca 62508Mexico Department of Immunology and Immunotherapy Icahn School of Medicine at Mount SinaiNew York 10029-6574New YorkUnited States Department of Epidemiology University of Iowa College of Public HealthIowa City 52242 IowaUnited States Instructional Technology Group Icahn School of Medicine at Mount SinaiNew York 10029-6574New YorkUnited States

Alterations to the gut microbiome and exposure to metals during pregnancy have been suggested to impact inflammatory bowel ***,how prenatal exposure to metals eventually results in long-term effects on the gut microbiome,leading to subclinical intestinal inflammation,particularly during late childhood,has not been *** is also unknown whether such an interactive effect drives a specific subgroup of children toward elevated susceptibility to intestinal *** used an amalgamation of machine-learning techniques with a regression-based framework to explore if children with distinct sets of gut microbes and certain patterns of exposure to metals during pregnancy(metal−microbial clique signature)had a higher likelihood of intestinal inflammation,measured based on fecal calprotectin(FC)in late *** obtained samples from a well-characterized longitudinal birth cohort from Mexico City(n=108),*** the second and third trimesters of pregnancy,11 metals were measured in whole *** microbial abundances and FC were measured in stool samples from children 9−11 years of *** FC was defined as having FC above 100μg/g of *** identified subgroups of children in whom microbial and metal−microbial clique signatures were associated with elevated FC(false discovery rate(FDR)vated FC:(1)low cesium(Cs)and copper(Cu)in the third trimester and low relative abundance of Eubacterium ventriosum(OR[95%CI]:10.27[3.57,29.52],FDRve abundances of Roseburia inulinivorans and Ruminococcus torques(OR[95%CI]:7.21[1.81,28.77],FDRve higher fecal calprotectin levels in late childhood,denoting an elevated risk of intestinal inflammation.

关键词： exposome metals machine learning microbiome environmental epidemiology intestinal inflammation

Impact of Flow Rate in Integration with Solar Radiation on Color and COD Removal in Dye Contaminated Textile Industry Wastewater:Optimization Study

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Energy Engineering 2022年第1期119卷 419-427页

作者： Pradeep k.Majhi Rifat Azam Richa kothari Naveen kumar arora v.v.Tyagi Department of Environmental Sciences Babasaheb Bhimrao Ambedkar UniversityLucknow226025U.P.India Department of Environmental Sciences Central University of JammuRahya-SuchaniBaglaSamba181143J&KIndia School of Energy Management Shri Mata Vaishno Devi UniversityKatra182320J&KIndia

Dyes are an integral part of the dying industry and have significantly resulted in environmental pollution by altering the standardwater quality after their discharge into the water *** culprits behind the altered water quality are the pretreatment chemicals used during dying manufacturing *** advanced treatmentmethods using conventional and advanced treatment options including solar energy have been put forth by researchers for the treatment of the dying effluents but,these methods have not proved significantly ***,the present study intends to check the efficiency of solar parabolic trough collector for treating the dying effluents in terms of color and ***,other wastewater parameters(BOD,nitrate and phosphate)have also been considered for this experimental *** standard flow rates(0.5,1.3,1.95 and 2.6 L/M)were maintained during the experiment for six hours at solar intensity(849.3±21.2W/m^(2))and the optimized flow rate(1.95 L/M)was detected and considered for further study during the present *** color concentration showed a significant reduction(≥76.4%)by treatment with the designed solar *** significant results were also noticed in terms of COD(79%).In this context,the current experimental study provides ideas on the decolorization and COD reduction efficiency with optimal flow rate in terms of cost-effectiveness with designed experimental reactor which could be further used and implemented for advanced scientific purposes.

关键词： Dye industry effluents decolorization renewable energy-based treatment lab-scale experiment

Wave Interaction and Resonance in a Non-Ideal Gas

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Chinese Physics Letters 2012年第12期29卷 5-8页

作者： Rajan arora Mohd.Junaid Siddiqui v.P.Singh Department of Applied Science and Engineering IIT RoorkeeSaharanpur CampusSaharanpurUP-247001India

The method of multiple time scales is used to obtain the asymptotic solutions to the planar and non-planar flows into a non-ideal *** transport equations for the amplitudes of resonantly interacting high frequency wav... 详细信息

关键词： resonant planar asymptotic

Synthesis,structural and optical properties of SrZrO_3:Eu^(3+) phosphor

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Journal of Rare Earths 2014年第4期32卷 293-297页

作者： Sheetal v.B.Taxak Rajni arora Dayawati S.P.khatkar Department of Chemistry Maharshi Dayanand University Department of Chemistry Government Post Graduate College

Eu3＋activated Sr1-xEuxZrO3 （x=0.01-0.04） phosphor with perovskite structure was successfully synthesized by using com-bustion method. The structure, morphology and optical properties of the material were characterized by X-ray diffraction, scanning electron microscopy and fluorescence spectrometry. The XRD results indicated that crystals of SrZrO3：Eu3＋belongs to tetragonal perovskite system. The phosphor could be effectively excited by Uv light and the emission spectra results indicated that red-dish-orange luminescence of SrZrO3：Eu3＋due to magnetic dipole transition 5D0→7F1 at 593 nm was dominant. Thus, the prepared phosphor showed remarkable luminescent properties which find applications in field emission display （FED） and plasma display panel （PDP） devices.

关键词： perovskite europium optical materials luminescence rare earths

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Inhibition of nitrification in soil by metal diethyldithiocarbamates

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Journal of Environmental Sciences 2003年第5期15卷 607-610页

作者： A.arora Bijay Singh Dhiraj Sud T.Srivastava C.L.arora PunjabAgriculturalUniversity PunjabAgriculturalUniversitySantLongowalInstituteofEngineering&TechnologySantLongowalInstituteofEngineering&TechnologyPunjabAgriculturalUniversity Ludhiana141004PunjabIndiaLudhiana141004PunjabIndiaLongowalPunjabIndiaLongowalPunjabIndiaLudhiana141004PunjabIndia

Nitrification acts as a key process in determining fertilizer use efficiency by crops as well as nitrogen losses from soils. Metal dithiocarbamates in addition to their pesticidal properties can also inhibit biological oxidation of ammonium(nitrification) in soil. Metal [M=v(Ⅲ), Cr(Ⅲ), Mn(Ⅱ), Fe(Ⅲ), Ni(Ⅱ), Cu(Ⅱ), Zn(Ⅱ) and Co(Ⅱ)] diethyldithiocarbamates (DEDTC) were synthesized by the reaction of sodium diethyldithiocarbamate with metal chloride in dichloromethane/water mixture. These metal diethyldithiocarbamates were screened for their ability to inhibit nitrification at different concentrations(10 μg/g soil, 50 μg/g soil and 100 μg/g soil). With increasing concentration of the complex, capacity to retard nitrification increased but the extent of increase varied for different metals. At 100 μg/g soil, different complexes showed nitrification inhibition from 22 36% to 46 45%. Among the diethyldithiocarbamates tested, Zn(DEDTC) 2 proved to be the most effective nitrification inhibitor at 100 μg/g soil. Manganese, iron and chromium diethyldithiocarbamates also proved to be effective nitrification inhibitors than the others at 100 μg/g soil. The order of percent nitrification inhibition in soil by metal diethyldithiocarbamates was: Zn(Ⅱ) > Mn(Ⅱ) > Fe(Ⅲ) > Cr(Ⅲ) >v(Ⅲ) > Co(Ⅱ) > Ni(Ⅱ) > Cu(Ⅱ).

关键词： nitrification inhibitor diethyldithiocarbamate metal complexes nitrogenous fertilizers pesticides

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Investigation of coupled cobalt-silver nanoparticle system by plan view TEM

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Progress in Natural Science:Materials International 2012年第3期22卷 186-192页

作者： Daniel Fox Ruggero verre Brendan J. O'Dowd Sunil k. arora Colm C. Faulkner Igor v. Shvets School of Physics and CRANN Trinity College Dublin CRANN Advanced Microscopy Laboratory Trinity College Dublin

We present a transmission electron microscopy (TEM) investigation of a coupled cobalt and silver nanoparticle system. A plan view in situ lift-out method for preparing samples for TEM using the focused ion beam (FIB) microscope was used. This technique is used to prepare high quality TEM samples with site specificity in a short time and with a high success rate. We demonstrate the ability of the plan view sample preparation technique to provide information about an ordered system of nanoparticles which could not be observed using standard FIB cross sectioning of the sample. High resolution TEM and energy dispersive X-ray spectroscopy mapping of both cross sectional and plan view samples are presented, clearly showing the significant benefit of plan view TEM analysis for certain samples.

关键词： Focused ion beam Transmission electron microscopy Lift-out Co Ag Nanoparticle

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Zrv2O7的热膨胀和非简谐振动

硅酸盐学报 2009年第5期37卷 696-702页

作者： SAkUNTALA T[印度] arora A k[印度] RAO Rekha[印度] 印度巴巴原子研究中心高压物理部孟买400085 英迪拉甘地原子研究中心材料科学部马德拉斯603102

因零膨胀材料在工程上的潜在应用,近10多年来,对材料的热膨胀特性得以深入了解。本文对ZrW2O8的负热膨胀现象的研究进展进行了简要回顾,并特别指出理解非简谐振动的重要性。讨论了Zrv2O7的声子特性和非简谐振动,其负热膨胀的高温相和具... 详细信息

因零膨胀材料在工程上的潜在应用,近10多年来,对材料的热膨胀特性得以深入了解。本文对ZrW2O8的负热膨胀现象的研究进展进行了简要回顾,并特别指出理解非简谐振动的重要性。讨论了Zrv2O7的声子特性和非简谐振动,其负热膨胀的高温相和具有正的热膨胀的低温相特征。此外,还比较了Zrv2O7和ZrW2O8的热膨胀特性。

关键词：热膨胀 Raman光谱学非简谐振动釩酸锆钨酸锆

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