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A scientometric review of biochar research in the past 20 years(1998-2018)

Biochar 2019年第1期1卷 23-43页

作者： Ping Wu Syed Tahir Ata-Ul-Karim Bhupinder pal singh Hailong Wang Tongliang Wu Cun Liu Guodong Fang Dongmei Zhou Yujun Wang Wenfu Chen Key Laboratory of Soil Environment and Pollution Remediation Institute of Soil ScienceChinese Academy of SciencesNanjing 210008People’s Republic of China University of Chinese Academy of Sciences Beijing 100049People’s Republic of China NSW Department of Primary Industries Elizabeth Macarthur Agricultural InstituteMenangleNSW 2568Australia Biochar Engineering Technology Research Center of Guangdong Province School of Environment and Chemical EngineeringFoshan UniversityFoshanGuangdong 528000China Key Laboratory of Soil Contamination Bioremediation of Zhejiang Province Zhejiang A&F UniversityHangzhouZhejiang 311300China Biochar Engineering and Technology Research Center of Liaoning Province Rice Research InstituteAgronomy CollegeShenyang Agricultural UniversityShenyang 110866LiaoningChina

Biochar is the carbon-rich product obtained from the thermochemical conversion of biomass under oxygen-limited *** has attained extensive attention due to its agronomical and environmental benefits in *** work adopts the scientometric analysis method to assess the development trends of biochar research based on the literature data retrieved from the Web of Science over the period of *** analysing the basic characteristics of 6934 publications,we found that the number of publications grew rapidly since *** on a keyword analysis,it is concluded that scholars have had a fundamental recognition of biochar and preliminarily found that biochar application had agronomic and environmental benefits during the period of *** clustering results of keywords in documents published during 2011-2015 showed that the main research hotspots were“biochar production”,“biochar and global climate change”,“soil quality and plant growth”,“organic pollutants removal”,and“heavy metals immobilization”.While in 2016-2018,beside these five main research hotspots,“biochar and composting”topic had also received greater attention,indicating that biochar utilization in organic solid waste composting is the current research ***,updated reactors(e.g.,microwave reactor,fixed-bed reactor,screw-feeding reactor,bubbling fluidized bed reactor,etc.)or technologies(e.g.,solar pyrolysis,Thermo-Catalytic Reforming process,liquefaction technology,etc.)applied for efficient energy production and modified biochar for environmental remediation have been extensively studied *** findings may help the new researchers to seize the research frontier in the biochar field.

关键词： Biochar CiteSpace Research hotspots Composting Energy Modification

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General-motors diet: A quick fix for steatotic live liver donors

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iLIVER 2023年第3期2卷 151-155页

作者： Anish Gupta Abhideep Chaudhary Gaurav Sood Niteen Kumar Imtiakum Jamir Aditya Shriya Vipin pal singh Rekha Subramaniyam Hitesh Soni Milind Mandwar Department of Hepato-Pancreato-Biliary Surgery and Liver Transplantation BLK MAX Super Specialty HospitalNew DelhiIndia

Background and aims:GM(General-Motors)diet is a low-calorie 7-day diet plan using complex carbohydrates used for quick weight *** optimisation is known to decrease steatosis and improve outcomes in liver *** evaluated the efficacy and feasibility of using GM diet in steatotic live liver donors(LLD).Methods:LLDs who either had BMI>30 kg/m^(2),Computerised tomography liver attenuation index(CT-LAI)10%were started on GM diet for 1 *** of these LLDs and their recipients were retrieved retrospectively and ***,liver function tests(LFT),MR fat-frac-tion,CT-LAI,hospital-stay and complications were analysed in LLDs while early graft dysfunction(EGD)and complications were assessed in ***:A total of 51 LLDs with mean age of 34.6?9.5 years with baseline mean weight of 80.6±10.8 kg and BMI of 29.1±2.78 kg/m^(2) were started on GM *** a week of following the GM diet,there was an average weight loss of 3.46±2.1 kg,a decrease in fat-fraction by 3.8%±2.7,and an improvement in CT-LAI by 6.7?3.7 *** patients could successfully undergo donor hepatectomy with an average postoperative ICU stay of 2.86±0.8 days and hospital stay of 6.82?0.81 *** donor had steatosis>10% on intraoperative Tru-cut biopsy and their post-operative outcomes were similar to normal liver *** were intra-abdominal collections in 2 donors requiring drainage and one required re-exploration for intestinal *** was EGD in 8 recipients(15.6%)and mortality in 1(1.9%)***:GM diet is safe and effective regimen to reduce steatosis and increase healthy LLD pool without compromising donor or recipient safety.

关键词： Steatosis GM diet weight loss donor optimization LDLT donor hepatectomy donor outcomes

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Conductivity Studies in Proton Irradiated AgI-Ag2O-V2O5-TeO2 Super-Ionic Glass System

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Materials Sciences and Applications 2010年第2期1卷 59-65页

作者： Poonam Sharma Dinesh Kumar Kanchan Meenakshi Pant Karan pal singh 不详

The electrical properties of proton ion beam irradiated glass samples are carried out by impedance spectroscopy in the frequency range from 10 Hz to 32 MHz. The ion beam of energy 3 MeV and fluence of of 1014 particles cm-2 was chosen for irradiation. The conductivity of the super ionic glass samples increases after irradiation and other electrical parameters like dielectric constant, dielectric loss and modulus of the proton irradiated glass samples as a function of glass composition and temperature are observed to change. The dielectric constant and the dielectric losses are increased after irradiation and the modulus parameters confirm the non-Debye nature for irradiated samples also.

关键词： Proton-Irradiated Glass DC Conductivity Silver-Ion Scaling Modulus

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Identification of Optimum Composition and Mechanical Properties of Al-Ni Metal Matrix Composite

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Journal of Minerals and Materials Characterization and Engineering 2015年第4期3卷 326-334页

作者： Manoj Kumar pal Simranjeet singh Sandhu Rohan Kalia Arka Ghosh Department of Mechanical Engineering SRM University (NCR Campus) Ghaziabad India ISBR Business School Bangalore India

Composites are materials that are made up of two or more chemically dissimilar phases. In this project aluminum was chosen as matrix material because it was inexpensive, light-weight, strong, tough and corrosion resistant. For the main load bearing phase it was hard, corrosion resistant at room temperature and thermally stable. The stir casting method was used because it was cost-effective and easy, and the particulate reinforcement (nickel) was uniformly distributed throughout the matrix phase. Sand moulding was used to cast the specimens. Specimens with 10, 20, 30 and 40 percentage Nickel were tested and the optimal specimen contained 20% Nickel. The Brinell hardness of Al + 20% Ni increased by 14.80%, Rockwell hardness increased by 2.43%, ultimate tensile strength increased by 1.003% and thermal conductivity of Al + 20% Ni decreased by 24.98% with respect to Aluminum.

关键词： Metal Matrix Composite Aluminum (Al) Nickel (Ni) Fabrication Testing Composite

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EDFA Gain-Flattening Using Side-Polished Fiber Half-Coupler With an Overlay Waveguide

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光学学报 2003年第S1期23卷 243-244页

作者： R.K. Varshney V.K. singh K. Pande M.R. Shenoy B.P. pal K. Thyagarajan Department of Physics Indian Institute of Technology Delhi New Delhi 110016 India

We report fabrication and modeling of a fiber half-coupler based gain-flattening device for EDFA. Using such a device, flattening of the ASE spectrum of an EDFA is also demonstrated.

关键词： EDFA Gain-Flattening Using Side-Polished Fiber Half-Coupler With an Overlay Waveguide of in de for ASE SPF been

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Study of Dielectric Constant of (1-x) ***3(ZMT) Ceramic Material at MicrowaveFrequencies as a Function of Composition x andProcessing Temperature

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Journal of Electromagnetic Analysis and Applications 2010年第12期2卷 664-671页

作者： Ravi Kumar Gangwar Surya pal singh Meenakshi Choudhary Nitish Kumar singh Devendra Kumar Om Parkash 不详

In this paper measurement of real part of permittivity and loss tangent of (1-x) ***3 (ZMT) material in powder form in S-band of microwave frequencies is presented and the associated accuracy estimated. This approach is based on the measurement of transmitted power from the cavity at and off resonance. Details of the design and fabrication of the rectangular cavity and the input and output coupling are given. The variation of dielectric properties of (1-x) ***3 (ZMT) with x-value and calcination temperature (for x = 0.1) is presented. The effect of doping of V2O5 is also studied. The results of present work may provide useful design guidelines for development of microwave compo-nents including dielectric resonator antennas.

关键词： Cavity Perturbation Method Permittivity Loss Tangent And Ceramic Material

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Predicting Yield and Stability Analysis of Wheat under Different Crop Management Systems across Agro-Ecosystems in India

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American Journal of Plant Sciences 2017年第8期8卷 1977-2012页

作者： Mangi Lal Jat Raj Kumar Jat Parvinder singh Shankar Lal Jat harminder singh Sidhu Hanuman Sahay Jat Deepak Bijarniya Chiter Mal Parihar Raj Gupta International Maize and Wheat Improvement Center (CIMMYT) National Agriculture Science Center (NASC) Complex New Delhi India Indian Council of Agricultural Research (ICAR) Indian Institute of Maize Research New Delhi India Borlaug Institute for South Asia (BISA) International Maize and Wheat Improvement Center (CIMMYT) New Delhi India

The objectives of the study were as follows: 1) to evaluate the GxExM for wheat genotypes;2) to predict yield performance and identify high stable wheat genotypes in different management practices;and 3) to make genotype-specific management and high performing genotype recommendations within and across agro-ecological regions. A diverse set of twenty-one genotypes was evaluated over three years (2012, 2013 and 2014) under two levels of crop management practices (CT and ZT) across three agro-ecological regions (BR, MP and PB) of India in replicated trials. Data were analyzed with SASGxE and RGxE programs using SAS and R programming languages, respectively. Across and within a location(s), the pattern of GxExM and GxMxY interactions (respectively) among univariate and multivariate stability statistics, grouping of genotypes in divisive clusters and estimates (with a prediction interval) of genotype varied in management practice CT and ZT. Across locations, the genotypes “Munal” and “HD-2967” were the best performers and high stable in CT and ZT, respectively. Genotypes “HD-2824” and “DPW-621-50”, and “Munal” may serve as diverse parents for developing high quality, climate smart, locally adapted genotypes for BR in CT and ZT, respectively. Genotypes “HD-2932”, “BAZ” and “JW-3288”, and “GW-322” and “HD-2967” are suitable for developing locally adapted stress tolerant genotypes for MP in management practices CT and ZT, respectively. Relatively small GxM and GxExM interactions in PB preclude in making definitive conclusions.

关键词： Stability Analysis GxExM BLUPs Forest Plots GGE Biplot Wheat Univariate Stability Statistics

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Intensity Dependent Nonlinear Absorption in Direct and Indirect Band Gap Crystals under Nano and Picosecond Z-Scan

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Optics and Photonics Journal 2012年第2期2卷 98-104页

作者： Dimple Sharma Poonam Gaur Bharam pal Malik Nageshwar singh Arun Gaur Department of Physics Deenbandhu Chhotu Ram University of Science and Technology (D.C.R.U.S.T) Murthal Sonipat India Department of Physics Hindu P.G. College Sonipat India Laser Systems Engineering Division (L.S.E.D.) Raja Rammanna Centre for Advanced Technology (CAT) Indore India

The nonlinear absorption properties of direct (GaN) and indirect (CdI2) band gap crystals have been studied by using an open aperture Z-scan technique under fundamental (1064 nm) and frequency doubled (532 nm) wavelength respectively with 10 ns or 60 ps pulse durations. Direct band gap crystal exhibits two and three photon absorption at all input irradiances. On the other hand, at low input irradiance the indirect band gap crystal exhibits saturable absorption (SA). At higher input irradiances two and three photon absorption becomes dominant. A monotonic increase of the nonlinear absorption coefficients with increasing laser pulse duration from 60 ps to 10 ns is observed for GaN and CdI2 crystals.

关键词： Direct and Indirect Band Gap Crystals Two Photon Absorption Three Photon Absorption Saturated Absorption

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Sitagliptin,sitagliptin and metformin,or sitagliptin and amitriptyline attenuate streptozotocin-nicotinamide induced diabetic neuropathy in rats

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The Journal of Biomedical Research 2012年第3期26卷 200-210页

作者： Ashish Kumar Sharma Akash Sharma Rita Kumari Kunal Kishore Divya Sharma Bharthu Parthsarthi Srinivasan Ashok Sharma Santosh Kumar singh Samir Gaur Vijay singh Jatav Prashant Sharma Varnika Srivastava Sneha Joshi Megha Joshi Prashant Kumar Dhakad Davender singh Kanawat Akanksha Mishra Anil Sharma Dharmendra singh Ravinder pal singh Himmat singh Chawda Rambir singh Sachin Kumar Raikwar Muneem Kumar Kurmi Pankaj Khatri Ashutosh Agarwal Arshee Munajjam Department of Pharmacology Gyan Vihar School of PharmacySuresh Gyan Vihar UniversityJagatpuraJaipur(Rajasthan)302025India Department of Pharmacology Delhi Institute of Pharmaceutical Sciences&ResearchPushpviharNew Delhi 110017India Department of Pharmacology Kota Collage of PharmacyRIICO Industrial AreaRanpurKota(Rajasthan)Pincode 302025India

Diabetic neuropathies are a family of nerve disorders caused by diabetes. Symptoms of the disease include nerve palsy, mononeuropathy, mononeuropathy multiplex, diabetic amyotrophy, painful polyneuropathy, autonomic neu- ropathy, and thoracoabdominal neuropathy. In this study, type 2 diabetes in rats was induced with nicotinamide- streptozotocin. Drug treatment was initiated on the d 15, with the combination regimen of metformin, pioglitazone and glimipiride or metformin and sitagliptin or sitagliptin, amitriptyline and sitagliptin and led to significantly im- proved glycemic control, increased grip strength and paw jumping response on d 21, 28 and 35 （P 〈 0.001）. Signif- icant increases in blood protein levels and decreases in urinary protein levels were observed in the animals treated with the different regimens on d 21, 28 and 35 （P 〈 0.001）. Combined treatment of streptozotocin and nicotinamide caused marked degeneration of nerve cells, while administration of metformin and sitagliptin showed tissue regen- eration and no body weight gain. In conclusion, treatment with sitagliptin and sitagliptin combined with metformin or amitriptyline results in no body weight gain, but causes an increase in grip strength and pain sensitivity, exhibits neural protection, and reverses the alteration of biochemical parameters in rats with streptozotocin-nicotinamide induced type 2 diabetes.

关键词： diabetic neuropathy nicotinamide-streptozotocin metformin pioglitazone glimipiride sitagliptin amitriptyline

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Neglected reverse Essex-Lopresti injury with ulnar nerve compression

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Chinese Journal of Traumatology 2011年第2期14卷 111-113页

作者： Ajay pal singh Ish Kumar Dhammi Anil Kumar Jain Department of Orthopaedics UCMS & GTB Hospita Delhi 110095 India

A 45 year old woman was diagnosed as having anteromedial radial head dislocation and distal radius fracture five months after her injury on fight forearm. The radial head dislocation led to ulnar nerve compression. She had severe restriction of her elbow movements. She was treated with arthrolysis, decompression of the ulnar nerve and radial head resection. The reverse Essex Lopresti injury and radial head dislocation compressing the ulnarnerve has not been reported in English language literature to the best of our knowledge. A mechanism is proposed for the injury. In acute presentations, restoration of both the radioulnar joints should be done and neglected nature of such injury leads to suboptimal outcomes.

关键词： Radius fracture Unar nerve Elbow joint

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