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Journal of Integrative Plant Biology 2014年第9期56卷 837-848页

作者： Ruchi Agarrwal Jagadish Sanmallappa Bentur suresh Nair International Centre for Genetic Engineering and Biotechnology(ICGEB) Directorate of Rice Reearch Agri Biotech Foundation

The Asian rice gall midge（Orseolia oryzae WoodMason） is a serious pest of rice that causes huge loss in *** feeding inside the susceptible host,maggots secrete substances that facilitate the formation of a hollow tube-like structure called gall and prevent panicle *** present investigation was carried out to get an account of biochemical changes occurring in the rice plant upon gall midge *** profiling of host tissues from three rice varieties,namely,TN1,Kavya,and RP2068,exposed to gall midge biotype 1（GMB1）,was carried out using gas chromatography mass spectrometry（GC-MS）.TN1 and GMB1 represented compatible interaction,while Kavya and GMB1 as well as RP2068 and GMB1 represented incompatible *** current study identified several metabolites that could be grouped as resistance,susceptibility,infestation,and host features based on their relative *** may be regarded as biomarkers for insect-plant interaction in general and rice-gall midge interaction in particular.

关键词： Biomarkers gas chromatography mass spectrometry insect-plant interaction metabolic profiling metabolites rice-gall midge interaction

Chiral N-phosphonyl imine chemistry:asymmetric additions of glycine enolate to diphenyl diamine-based phosphonyl imines

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Science China Chemistry 2010年第1期53卷 125-129页

作者： PINDI suresh KATTAMURI Padmanabha V. Department of Chemistry and Biochemistry Texas Tech University

Diphenyl diamine-based phosphonyl imines attached by the N-isopropyl group in the auxiliary have been synthesized in good yields under convenient reaction *** new chiral N-phosphonyl imines can react with glycine enolate smoothly to give chiral α-β diamino esters in good yields(72%-90%) and up to excellent diastereoselectivity(>99:1 dr).By treatment with HBr,the chiral auxiliary can be readily *** absolute structure has been unambiguously determined by converting a product to a known sample.

关键词： chiral N-phosphonyl imine chiral phosphoramide glycine enolate α-β diamino ester

Magnetic separation studies on ferruginous chromite fine to enhance Cr:Fe ratio

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International Journal of Minerals,Metallurgy and Materials 2015年第3期22卷 217-224页

作者： Sunil Kumar Tripathy P.K.Banerjee Nikkam suresh Research and Development Division Tata Steel Ltd. Fuel and Mineral Engineering Dept. Indian School of Mines

The Cr：Fe ratio （chromium-to-iron mass ratio） of chromite affects the production of chrome-based ferroalloys. Although the lit- erature contains numerous reports related to the magnetic separation of different minerals, limited work concerning the application of mag- netic separation to fine chromite from the Sukinda region of India to enhance its Cr：Fe ratio has been reported. In the present investigation, magnetic separation and mineralogical characterization studies of chromite fines were conducted to enhance the Cr：Fe ratio. Characterization studies included particle size and chemical analyses, X-ray diffraction analysis, automated mineral analysis, sink-and-float studies, and mag- netic susceptibility measurements, whereas magnetic separation was investigated using a rare earth drum magnetic separator, a rare earth roll magnetic separator, an induced roll magnetic separator, and a wet high-intensity magnetic separator. The fine chromite was observed to be upgraded to a Cr：Fe ratio of 2.2 with a yield of 55.7% through the use of an induced roll magnetic separator and a feed material with a Cr：Fe ratio of 1.6.

关键词： chromite ore treatment magnetic separation characterizafion mineral processing industry

Phenology of Ficus *** a tropical dry forest, Mudumalai, south India

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Journal of Forestry Research 2018年第4期29卷 1117-1126页

作者： H.S.suresh R.Sukumar Center for Ecological Sciences Indian Institute of Science

The phenology of figs （Ficus spp. Moraceae） is being monitored in the dry forests of Mudumalai, southern India and individuals belonging to the genus are marked with unique tag numbers and their vegetative and reproductive phenologies have been monitored since August 2000 on a monthly basis. The influence of abiotic factors on fig phenology and the differences between fig and non- fig phenologies are being examined. The seasonality of different phenophases of fig phenology is also being examined. The maximum intensity of leaf flush occurred in drier months. Fig and non-fig species showed significant differences with expansion and senescence phenophases of leafing. Flowering also occurred in drier months. There were significant differences between fig and non-fig species with reproductive phenophases. As with non-fig species, leafing was influenced by maximum temperatures. Both vegetative and reproductive phenophases were significantly seasonal.

关键词： Dry forests Figs Non-figs Multipleregression Phenology Seasonality

Effect of spark plasma sintering and reinforcements on the formation of ultra-fine and nanograins in AA2024-TiB2-Y hybrid composites

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Progress in Natural Science:Materials International 2022年第1期32卷 79-86页

作者： CH.suresh Vidyasagar D.B.Karunakar Department of Architecture and Planning Indian Institute of Technology Roorkee Mechanical and Industrial Engineering Department Indian Institute of Technology Roorkee

This study reports the influence of sintering mechanism and reinforcement materials on the formation of ultra-fine and nanograins in Al-TiB-Y nanohybrid composites. The mechanical properties of the composites and their corresponding micro and nanostructures are correlated. The experimental and characterization results revealed that despite the addition of TiB, the hard and brittle AlTi phase formation in the composites was suppressed and hence, their ductility was retained. It was found that yttrium content of 0.3 wt% was the optimum amount which created advantageous spark plasma sintering conditions, and the addition of 0.3 wt% promoted the formation of bi-modal size grains（ultra-fine and nano） along with micro grains, Ω and other nano precipitates, resulting in a significant enhancement in the composite properties. The formation of ultra-fine and nanograins may be attributed to the combined effect of melting and rapid solidification at necking zones due to Joule’s heating and thermomechanical fatigue. Among all the sintered composites, the highest hardness（137 HV）, ultimate tensile strength（UTS）(496 MPa), yield strength（YS）(438 MPa) with 15.7% elongation were obtained in the sintered sample reinforced with 1.0 wt% TiBand 0.3 wt% yttrium.

关键词： Hybrid composites Ultra-fine grains Nano grains Spark plasma sintering Nano precipitates Microstructure

Effect of desliming on the magnetic separation of low-grade ferruginous manganese ore

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International Journal of Minerals,Metallurgy and Materials 2015年第7期22卷 661-673页

作者： Sunil Kumar Tripathy P.K.Banerjee Nikkam suresh Tata Steel Limited Hindalco Industries Limited Aditya Birla Group Indian School of Mines

In the present investigation, magnetic separation studies using an induced roll magnetic separator were conducted to beneficiate low-grade ferruginous manganese ore. The feed ore was assayed to contain 22.4% Mn and 35.9% SiO2, with a manganese-to-iron mass ratio （Mn：Fe ratio） of 1.6. This ore was characterized in detail using different techniques, including quantitative evaluation of minerals by scan- ning electron microscopy, which revealed that the ore is extremely siliceous in nature and that the associated gangue minerals are more or less evenly distributed in almost all of the size fractions in major proportion. Magnetic separation studies were conducted on both the as-received ore fines and the classified fines to enrich their manganese content and Mn：Fe ratio. The results indicated that the efficiency of separation for deslimed fines was better than that for the treated unclassified bulk sample. On the basis of these results, we proposed a proc- ess flow sheet for the beneficiation of low-grade manganese ore fines using a Floatex density separator as a pre-concentrator followed by two-stage magnetic separation. The overall recovery of manganese in the final product from the proposed flow sheet is 44.7% with an assay value of 45.8% and the Mn：Fe ratio of 3.1.

关键词： manganese ore treatment mineralogy beneficiation magnetic separation flow sheet analysis

Investigation of Structural, Rheological and Thermal Properties of PMMA/ONi-Al LDH Nanocomposites Synthesized via Solvent Blending Method: Effect of LDH Loading

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Chinese Journal of Polymer Science 2016年第6期34卷 739-754页

作者： Samarshi Chakraborty Manish Kumar Kelothu suresh G.Pugazhenthi Department of Chemical Engineering Indian Institute of Technology Guwahati

This article addresses the synthesis of organically tailored Ni-A1 layered double hydroxide （ONi-A1 LDH） and its use in the fabrication of exfoliated poly（methyl methacrylate）（PMMA） nanocomposites. The pristine Ni-AI LDH was initially synthesized by co-precipitation method and subsequently modified using sodium dodecyl sulfate to obtain ONi-A1 LDH. Nanocomposites of PMMA containing various amounts of modified Ni-A1 LDH （3 wt%-7 wt%） were synthesized via solvent blending method to investigate the influence of LDH content on the properties of PMMA matrix. Several characterization methods such as X-ray diffraction （XRD）, transmission electron microscopy （TEM）, Fourier transform infrared spectroscopy （FTIR）, rheological analysis, differential scanning calorimetry （DSC） and thermo gravimetric analysis （TGA）, were employed to examine the structural, viscoelastic and thermal properties of PMMA/OLDH nanocomposites. The results of XRD and TEM examination confirm the formation of partially exfoliated PMMA/OLDH nanocomposites. The FTIR results elucidate that the characteristic bands for both pure PMMA and modified LDH are present in the spectra of PMMA/OLDH nanocomposites. Rheological analyses were carried out to examine the adhesion between polymer matrix and fillers present in the nanocomposite sample. The TGA data indicate that the PMMA nanocomposites exhibit higher thermal stability when compared to pure PMMA. The thermal decomposition temperature of PMMA/OLDH nanocomposites increases by 28 K compared to that of pure PMMA at 15% weight loss as a point of reference. In comparison with pure PMMA, the PMMA nanocomposite containing 7 wt% LDH demonstrates improved glass transition temperature （Tg） of around 3 K. The activation energy （Ea）, reaction orders （n） and reaction mechanism of thermal degradation of PMMA/OLDH nanocomposites were evaluated using different kinetic models. Water uptake capacity of the PMMA/OLDH nanocomposites is less than that of the pure PMMA.

关键词： Ni-A1 LDH PMMA XRD FTIR TGA Kinetic model.

Study on the Effect of Base Pressure on Magnetron Sputtering Discharge Plasma by Optical Emission Spectroscopy

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Plasma Science and Technology 2010年第1期12卷 35-40页

作者： S.YUGESWARAN K.suresh V.SELVARAJAN Plasma Physics Laboratory Department of Physics Bharathiar University

Argon plasma was generated by DC magnetron sputtering discharge at a constant input power and sputtering pressure. The emission spectra of the argon plasma, in a region of 300 nm to 800 nm, were recorded with three different base pressures （4×10^-4 Pa, 13×10^-4 Pa and 26×10^-4 Pa）. From the spectra, the Boltzmann temperature （TB） was calculated by using the atomic Boltzmann plot method. The intensity ratio of N and N2 lines provided the information on the changes in the degree of dissociation of nitrogen molecules. The obtained results showed that with the increase in base pressure the dissociation of N2 increased and the Boltzmann temperature （TB） decreased.

关键词： argon plasma magnetron sputtering emission spectroscopy Boltzmann temperature

Ionic liquid electrolytes for sodium-ion batteries to control thermal runaway

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Journal of Energy Chemistry 2023年第6期81卷 321-338,I0008页

作者： Keith Sirengo Aswathy Babu Barry Brennan suresh C.Pillai Nanotechnology and Bio-Engineering Research Group Department of Environmental ScienceAtlantic Technological UniversityATU SligoAsh LaneSligo F91 YW50Ireland Health and Biomedical(HEAL)Strategic Research Centre Atlantic Technological UniversityATU SligoAsh LaneSligo F91 YW50Ireland

Sodium-ion batteries are expected to be more affordable for stationary applications than lithium-ion batteries,while still offering sufficient energy density and operational capacity to power a significant segment of the battery *** this,thermal runaway explosions associated with organic electrolytes have led to concerns regarding the safety of sodium-ion *** electrolytes,ionic liquids are promising because they have negligible vapor pressure and show high thermal and electrochemical *** review discusses the safety contributions of these electrolyte properties for high-temperature *** ionic liquids provide thermal stability while at the same time promoting high-voltage window battery ***,apart from cycle stability,there is an additional safety feature attributed to modified ultra-concentrated ionic liquid *** these contributions,the following have been discussed,heat sources and thermal runaway mechanisms,thermal stability,the electrochemical decomposition mechanism of stable cations,and the ionic transport mechanism of ultra-concentrated ionic liquid *** addition,the contributions of hybrid electrolyte systems consisting of ionic liquids with either organic carbonate or polymers are also *** thermal stability of ionic liquids is found to be the main contributor to cell safety and cycle *** high-temperature applications where electrolyte safety,capacity,and cycle stability are important,highly concentrated ionic liquid electrolyte systems are potential solutions for sodium-ion battery applications.

关键词： Thermal stability Ionic liquids Sodium-ion batteries Cycle stability Ionic conductivity

Multiclass recognition of Alzheimer’s and Parkinson’s disease using various machine learning techniques: A study

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International Journal of Modeling, Simulation, and Scientific Computing 2022年第1期13卷 235-250页

作者： Chetan Balaji D.S.suresh Department of ECE Channabasaveshwara Institute of Technology Tumkur KarnatakaIndia Visvesvaraya Technological University BelagaviKarnatakaIndia

The aging population is primarily affected by Alzheimer’s disease(AD)that is an incur-able neurodegenerative *** is a need for an automated efficient technique to diagnose Alzheimer’s in its early *** techniques are used to diagnose *** and neuroimaging methodologies are widely used to highlight changes in the electrical activity of the brain signals that are helpful for early ***’s disease(PD)is a major neurological disease that results in an average of 50,000 new clinical diagnoses worldwide every *** voice features are majorly used as the main means to diag-nose *** major symptoms of PD are loss of intensity,the monotony of loudness and pitch,reduction in stress,unidentified silences,and *** though various innovative models are proposed by explorers about Alzheimer’s and Parkinson’s classifi-cation diseases,still there is a need for efficient learning methodologies and *** paper provides a review on using machine learning(ML)together with several fea-ture extraction techniques that is helpful in the early detection of AD with Parkinson’*** novelty and objective of this study are that the CAD technique is used to improve the accuracy of early diagnosis of *** proposed technique depends on the nonlinear process for data dimension reduction,feature removal,and classification using kernel-based support vector machine(SVM)*** dimension of the input space is radically diminished with kernel *** the learning set is labeled,it creates sense to utilize this information to make a dependable method of dropping the input space *** different techniques of ML are explained under the major approaches ***,artificial neural network(ANN),deep learning(DL),and ensemble methods.A comprehensive assessment is presented at SVM,ANN,and DL approaches for better detection of Alzheimer’s with PD highlighting future insights.

关键词： Electroencephalograph support vector machine Alzheimer’s disease control normal machine learning