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International Journal of Minerals,Metallurgy and Materials 2016年第7期23卷 751-759页

作者： Dilip Makhija rajendra Kumar Rath Kaushik Chakravarty Abhay Shankar patra Asim Kumar Mukherjee Akhilesh Kumar Dubey Research and Development Division Tata Steel Ltd. Mineral processing Division CSIR-National Metallurgical Laboratory Raw Material Blending and Bedding Section Tata Steel Ltd.

The Linz-Donawitz（LD） steelmaking process produces LD slag at a rate of about 125 kg/t. After metallic scrap recovery, the non-metallic LD slag is rejected because its physical/chemical properties are unsuitable for recycling. X-ray diffraction（XRD） studies have indicated that non-metallic LD slag contains a substantial quantity of mineral phases such as di- and tricalcium silicates. The availability of these mineral phases indicates that LD slag can be recycled by iron（Fe）-ore sintering. However, the presence of 1.2wt% phosphorus（p） in the slag renders the material unsuitable for sintering operations. Electron probe microscopic analysis（EpMA） studies indicated concentration of phosphorus in dicalcium silicate phase as calcium phosphate. The Fe-bearing phases（i.e., wustite and dicalcium ferrite） showed comparatively lower concentrations of p compared with other phases in the slag. Attempts were made to lower the p content of LD slag by adopting various beneficiation techniques. Dry high-intensity magnetic separation and jigging were performed on as-received samples with particle sizes of 6 and 3 mm. Spiral separation was conducted using samples ground to sizes of less than 1 and 0.5 mm. Among these studies, grinding to 0.5 mm followed by spiral concentration demonstrated the best results, yielding a concentrate with about 0.75wt% p and 45wt% Fe.

关键词： steelmaking slag dephosphorization recycling

Extract of buckwheat sprouts scavenges oxidation and inhibits pro-inflammatory mediators in lipopolysaccharide-stimulated macrophages (RAW264.7)

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Journal of Integrative Medicine 2013年第4期11卷 246-252页

作者： rajendra Karki Cheol-Ho park Dong-Wook Kim Department of Oriental Medicine Resources Mokpo National University Division of pharmacology and Toxicology School of Pharmacy University of Missouri-Kansas City Department of Bio-Health Technology Kangwon National University

OBJECTIVE： Buckwheat has been considered as a potential source of nutraceutical components on the world market of probiotic foodstuffs. The purpose of this study was to evaluate the effects of tartary buckwheat （Fagopyrum tataricum） sprouts on oxidation and pro-inflammatory mediators. METHODS： The anti-oxidant effects of buckwheat extract （BWE） and rutin were evaluated by using 1,1-diphenyl-2-picrylhydrazyl （DppH）-and nitric oxide （NO）-scavenging activities, serum peroxidation and chelating assays. Lipopolysaccharide （LpS）-stimulated RAW264.7 cells were used to evaluate anti-inflammatory activities of buckwheat and rutin. NO production in LpS- stimulated RAW264.7 cells was determined by using Griess reagent. The expressions of inducible nitric oxide synthase （iNOS）, cyclooxygenase-2 （COX-2）, nuclear factor-kappa B （NF-κB） p65 subunit in cytosolic and nuclear portions were determined by Western blot analysis. Also, the production of inflammatory cytokines interleukin-6 （IL-6） and tumor necrosis factor-α （TNF-α） was determined by enzyme-linked immunosorbent assay. RESULTS： Inhibitory concentration 50 values for DppH- and NO-scavenging activities of BWE were 24.97 and 72.54 μg/mL respectively. BWE inhibited serum oxidation and possessed chelating activity. Furthermore, BWE inhibited IL-6 and TNF-a production in LpS-stimulated RAW264.7 cells. Also, BWE inhibited iNOS and COX-2 expression and NF-KB p65 translocation. CONCLUSION： Buckwheat sprouts possessed strong antioxidant activity and inhibited production of pro-inflammatory mediators in the applied model systems. Thus, buckwheat can be suggested to be beneficial in inflammatory diseases by inhibiting the free radicals and inflammatory mediators.

关键词： Fagopyrum plant extracts oxidation nitric oxide synthase type II cyclooxygenase 2

photocatalytic degradation of endocrine disruptor Bisphenol-A in the presence of prepared Ce_xZn_(1-x)O nanocomposites under irradiation of sunlight

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Journal of Environmental Sciences 2014年第11期26卷 2362-2368页

作者： Kamaraj M. Ranjith K.S. Rajeshwari Sivaraj rajendra Kumar R.T. Hasna Abdul Salam Department of Biotechnology Dr.N.G.P. Arts and Science College Coimbatore 641048 Tamil Nadu India Advanced Materials and Devices Laboratory Department of Physics Bharathiar University Coimbatore 641046 Tamil Nadu India Department of Biotechnology School of Life Sciences Karpagam University Coimbatore 641021 Tamil Nadu India

photocatalytic degradation of Bisphenol A （BpA）, a representative endocrine disruptor chemical, was carried out under irradiation of sunlight in the presence of CexZn1-xO nanophotocatalyst. Cerium （Ce） ions were successfully incorporated into the bulk lattice of ZnO by simple co-precipitation process. The CexZn1-xO composite nanostructures exhibited higher photocatalytic efficiency than pure ZnO in the degradation of BpA under sunlight irradiation and nearly complete mineralization of BpA was achieved. The degradation rate was strongly dependent on factors such as the size and structure of catalyst, doping material concentration, BpA concentration, catalyst load, irradiation time and pH levels. This work suggested that the CexZn1-xO assisted photocatalytic degradation is a versatile, economic, environmentally benign and efficient method for BpA removal in the aqueous environment.

关键词： Bisphenol A (BpA) ZnO CexZn1-xO Sunlight Co-precipitation Cerium

Mesoporous cadmium bismuth niobate(CdBi2Nb2O9)nanospheres for hydrogen generation under visible light

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Journal of Energy Chemistry 2017年第3期26卷 433-439页

作者： Aniruddha K.Kulkarni Yogesh A.Sethi rajendra p.panmand Latesh K.Nikam Jin-Ook Baeg N.R.Munirathnam Anil V.Ghule Bharat B.Kale Centre for Materials for Electronics Technology(C-MET) Department of Electronics and Information and Technology(DeitY)Government of IndiaPanchawati off Pashan RoadPune 411008India Department of Nanotechnology Dr.Babasaheb Ambedkar Marathwada UniversityAurangabad 411007India Department of chemistry Shivaji UniversityKolhapur 416004India Advanced Chemical Technology Division Korea Research Institute of Chemical TechnologyYuseong Daejeon 305600Republic of Korea Department of Chemistry Prof.John Barnabas School of Biological studiesAhmednagar College Ahmednagar 414001India

Herein, we report visible light active mesoporous cadmium bismuth niobate（CBN） nanospheres as a photocatalyst for hydrogen（H） generation from copious hydrogen sulfide（HS）. CBN has been synthesized by solid state reaction（SSR） and also using combustion method（CM） at relatively lower *** as-synthesized materials were characterized using different techniques. X-ray diffraction analysis shows the formation of single phase orthorhombic CBN. Field emission scanning electron microscopy and high resolution-transmission electron microscopy showed the particle size in the range of.5–1 μm for CBN obtained by SSR and 50–70 nm size nanospheres using CM, respectively. Interestingly, nanospheres of size 50–70 nm self assembled with 5–7 nm nanoparticles were observed in case of CBN prepared by *** optical properties were studied using UV–visible diffuse reflectance spectroscopy and showed band gap around.0 eV for SSR and 3.1 eV for CM. The slight shift in band gap of CM is due to nanocrystalline nature of material. Considering the band gap in visible region, the photocatalytic activity of CBN for hydrogen production from HS has been performed under visible light. CBN prepared by CM has shown utmost hydrogen evolution i.e. 6912 μmol/h/0.5 g which is much higher than CBN prepared using *** enhanced photocatalytic property can be attributed to the smaller particle size, crystalline nature,high surface area and mesoporous structure of CBN prepared by combustion method. The catalyst was found to be stable, active and can be utilized for water splitting.

关键词： photocatalysis CdBi2Nb2O9 Hydrogen generation

Evaluation of Non-point Source N and p Loads in a Small Mixed Land Use Land Cover Watershed

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Journal of Water Resource and protection 2010年第4期2卷 362-372页

作者： Ashok Mishra rajendra Singh Vijay p. Singh 不详

Non-point source pollution (NpS) of water resources has become a major problem in recent years due to more human interactions and disturbances to natural landscapes. The problem can have more impacts in sub-humid subtropical regions where high intensity monsoon rains have greater effects on hydrologic proc-esses and thus the assessment of those effects is necessitated for strategic water resources and environmental management. Since spatial and temporal changes of NpS pollutants are difficult to assess on a watershed scale, the assessment can be done effectively using a suitable water quantity-quality model coupled with GIS and remote sensing that incorporates spatial variations. The objective of this study was to assess the N and p loads from a small mixed type watershed comprising different land use land covers with the aid of Soil and Water Assessment Tool (SWAT)-a hydrologic-water quality model. The model was calibrated for runoff and sediment transport and then simulation of associated N and p loads as NpS pollution was done and compared with measured values at the outlet of the watershed which is part of the DVC Command, Hazaribagh, India. The calibrated SWAT model was used to estimate the water soluble NO3-N, NH4-N, p, organic N and or-ganic p loads being transported as pollutants by runoff and percolated water. The estimates of these pollut-ants provided information on the extent of NpS pollution of water downstream. The results of the study re-veal that the NpS pollutant load in runoff varies with seasonal rainfall patterns and ranges from 2.57 to 4.52 kg/ha in case of NO3-N which accounts for a maximum load of 7661.40 kg of NO3-N in surface runoff from the watershed under study. The total loss of N from the watershed accounts for as high as 8.84 kg/ha, whereas the p load is 0.02 kg/ha. These losses can be as high as 14984.14 kg of total N and 50.85 kg of total p when estimated as NpS pollutants from the watershed. The study is therefore important to get an

关键词： Modeling Watershed Swat N&p Nutrient Load NpS pollution

Hints at Quantum Characteristics of Light Signals Measured from a Human Subject

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Chinese Medicine 2013年第3期4卷 72-78页

作者： David Racine Anshu Rastogi rajendra p. Bajpai Department of Biophysics Palack University Olomouc Czech Republic Division of Analytical BioSciences Leiden University The Netherlands School of physics Trinity College Dublin Ireland

We measure ultra-weak photon signals emitted from the hand of a human subject, either spontaneously or gradually decaying after local stress has been induced with five concentrations of H2O2. We analyze the photon distributions of both spontaneous and stimulated number of photons per measuring interval (bin sizes) according to statistics measure Fano Factor which leads to quantum optics, g(2)(0). We also fit either semi-classical based exponential or quantum grounded hyperbolic curves to the decays. Both indicators point towards an adequate description of the photon signal in an interpretation that is quantum. We extend the interpretation towards the suggestion of a quantum coherent aspect of the subject which, once placed in a therapeutic perspective, links to the holistic views on health.

关键词： Biophotons Holistic Health Quantum Coherence

Comparison of functional outcomes among subtypes of Fraser’s typeⅡfloating knee

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Chinese Journal of Traumatology 2021年第1期24卷 25-29页

作者： Deepak Chouhan Devendra K.Chouhan rajendra K.Kanojia prateek Behera Department of Orthopedics Post Graduate Institute of Medical Education&ResearchChandigarh160012India Department of Orthopedics All India Institute of Medical SciencesBhopalMadhya Pradesh462020India

purpose The poor prognosis in patients with floating knee injuries is mainly contributed to articular involvement(Fraser’s typeⅡ).This study aims to evaluate and compare the functional outcomes among different Fraser’s typeⅡfloating knee injuries after surgical *** Twenty-seven patients with Fraser’s typeⅡfloating knee injuries(54 fractures)between September 2014 and December 2015 were enrolled prospectively in this study and were distributed according to Fraser’s floating knee classification into three different groups as typeⅡA(ipsilateral femoral shaft and tibial intra-articular involvement,n=11),typeⅡB(ipsilateral tibial shaft and femoral intra-articular involvement,n=9)and typeⅡC(both femoral and tibial intra-articular involvement,n=7).The differences among the groups were evaluated and *** functional outcomes of these injuries at one year were analyzed using Knee Injury and Osteoarthritis Outcome Score(KOOS)which covers 5 subscales of pain,other symptoms,activities of daily living,sports and recreation,and quality of *** result was also compared with standardized age-sex matched healthy population using paired samples *** All the patients were male,and the injury mechanism was solely roadside *** mean age was 29.8 years and injury severity score 17.9(comparable in all the three groups).Most injuries were observed on the right side(20 cases,74.1%).Based on paired samples t-test,the KOOS score of patients with Fraser’s typeⅡA was found to be better than that of typeⅡB and typeⅡ*** with the reference age-sex matched control group,patients with Fraser’s typeⅡB andⅡC fractures had significantly lower mean score in all KOOS subscales(all ppeⅡA only revealed significant difference regarding the subscales of activities of daily living(pports and recreation(pppatients with Fraser’s typeⅡA fractu

关键词： Floating knee Femur fractures Tibia fractures Outcome

Microwave Synthesis, Spectral, Thermal and Antimicrobial Studies of Some Ni(II) and Cu(II) Schiff Base Complexes

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Open Journal of Synthesis Theory and Applications 2013年第2期2卷 56-62页

作者： A. p. Mishra Neha Sharma rajendra K. Jain Synthetic Inorganic & Coordination Chemistry Laboratories Department of Chemistry Dr. H. S. Gour Central University Sagar India

Schiff bases have been synthesized by condensing nicotinamide with methyl isobutyl ketone (MKN) and 2-hydroxy acetophenone (HAN). Metal complexes have been prepared by interacting these Schiff bases with metal ions viz. Ni(II), Cu(II) 1:2 (metal:ligand) ratio. These compounds have been synthesized by conventional as well as microwave methods and characterized by elemental analysis, FT-IR, UV-Vis, FAB-mass, ESR, molar conductance, and thermal analysis. FAB mass and thermal data show degradation pattern of the complexes. The complexes are colored and stable in air at room temperature. The structure of the ligands were elucidated by spectral studies which indicate the presence of two or three coordinating groups in ligands which may be oxygen atom of the phenolic -OH group, the nitrogen atom of the azomethine (C=N) group and the oxygen atom of the carbonyl group. The thermal behavior of metal complexes shows that the hydrated complexes loses water molecules of hydration in the first step;followed by decomposition of ligand molecules in the subsequent steps. The solid state electrical conductivity of the metal complexes has also been measured. Solid state electrical conductivity studies reflect semiconducting nature of the complexes. The Schiff bases and metal complexes show good activity against the Gram-positive bacteria;Staphylococcus aureus and Gram-negative bacteria;Escherichia coli and fungi Aspergillus nigerand Candida albicans. The antimicrobial results also indicate that the metal complexes are better antimicrobial agents as compared to the Schiff bases.

关键词： Microwave Synthesis Schiff Base Thermal Study Biological Activity

Comparison of two incisions for open reduction and internal fixation of mandibular body fractures: A randomised controlled clinical trial evaluating the surgical outcome

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Chinese Journal of Traumatology 2019年第1期22卷 34-40页

作者： Sasikala Balasubramanian Elavenil panneerselvam Gayathri Gopi Komagan prabhu Nakkeeran Aditi rajendra Sharma Krishnakumar Raja VB Department of Oral & Maxillofacial Surgery SRM Dental College & Hospital Ramapuram Campus Ramapuram Chennai 600089 India

purpose: The purpose of the study is to compare the surgical access and post-operative outcome of two intra-oral incisions used for approaching a mandibular body fracture. Methods: This clinical trial involved 60 patients with mandibular body fractures who were randomly allocated to control and study groups. The fractures were approached using the routine vestibular incision in the control group and crevicular incision with vertical release in the study group. The effects of incision design on the post-surgical outcome variables like swelling, trismus, paresthesia, wound healing and gingival recession were statistically analysed with non-parametric tests by using SpSS 22.0 software. Comparison of continuous variables between the groups and time points was done using Mann Whitney test and Friedman test respectively. Chi-square test was used to compare proportions between groups. Dunn's test with Bonferroni correction was used for pair wise comparisons. Results: The study group demonstrated favourable surgical outcome in the immediate postoperative phase as compared to the control group. The difference in mouth opening, swelling and neurosensory impairment between the two groups was found to be statistically significant (p postoperative patient discomfort and better surgical outcome.

关键词： Mandibular fractures Incision Nerve injury

Electrical properties of Newly Calcified Tissues on the Surface of Silver Ion Administrated Hydroxyapatite Scaffolds

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Journal of Biomaterials and Nanobiotechnology 2020年第2期11卷 83-100页

作者： Manjushree M. Bahir rajendra S. Khairnar Megha p. Mahabole National Center for Cell Science Pune India Swami Ramanand Teerth Marathwada University Nanded India

The application of electric field to graft materials has significant contribution in bone healing mechanism. Hence, the aim of this study is to develop conductive hydroxyapatite (HAp) scaffolds by introducing different concentrations of silver ion into its structure and demonstrate its impact on in vitro bioactivity and electrical properties. Hydroxyapatite was synthesized by wet chemical method and calcium ions from HAp structure have been partially replaced by silver ions. The HAp and Ag-HAp nanocomposites were characterized by Fourier-transform infrared, Raman spectroscopy, XRD and EDAX for functional group and phase formation analysis as well as to confirm existence of silver ions in HAp structure respectively. Bioactivity of these scaffolds was assessed by using simulated body fluid. The surface morphology, structural analysis and electrical properties of scaffolds before and after formation of newly calcified tissues on its surface were examined via scanning electron microscopy (SEM), XRD, FTIR, dielectric and impedance spectroscopy techniques. Overall, our finding suggests that the administration of silver ions in HAp scaffold boosts bioactivity and has strong correlation with electrical properties.

关键词： Hydroxyapatite Wet Chemical Method Bioactivity Electrical properties