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New Agri-Silvo-pastoral model Utilizing Terrace RiserEnhancing Crop and Livestock production Developed inNepal

Journal of Agricultural Science and Technology(A) 2019年第6期9卷 371-389页

作者： Barakoti Tanka prasad sah Raj Kumar Agricultural Research Station Nepal Agricultural Research CouncilDhankuta 56800PakhribasNepal

Twelve fodder species with maize (Zea mays) and millet (Eleusine coracana) were evaluated under agri-silvo-pastoral system along the Terrace risers (T-risers) of cropping land in the Agricultural Research Station pakhribas, Nepal. major aim of innovative agroforestry experiment designed and tested first time in Nepal was to utilize one-third land in risers of cropping terraces due to limited lands of smallholders to produce green fodders needed for livestock. Trees were planted at 1.5 m on the terrace edges and ground fodders at 30-50 cm on the risers. Trees were not allowed to grow tall to avoid shade effect on crops grown in terraces. They were felled at breast height in second year growing coppices for fodder. The results showed higher survival (76% to 100%), growth (1-3 m high) and yield of improved forages and fodder trees indicating potential for cultivation on T-risers. Dry matter (Dm) of tree fodders varied 31%-49%, and ground fodders 19%-32%. Dm yields ranged 3.0 t/ha (Stylosanthes guanensis) to 26.5 t/ha (pennisetum purpureum). Combined effects of fodder species on major hill crops, maize and finger millet growth, yield and other attributes were monitored in the terraces. most mean data were significant and at par between the treatments. Better combinations of tree and ground fodders for higher grain and stover yields (3.1 t/ha and 3.4 t/ha, respectively) of maize were Grewia optiva/Thysalonaema maxima, Desmodium intortum, Ficus auriculata/Setaria anceps, D. intortum (2.7 t/ha and 3.3 t/ha, respectively). promising combinations for finger millet growth and yields (2-3 t/ha) were G. optiva/T. maxima, Bauhinia purpurea/S. anceps, F. semicordata/p. cetaceum. Soil analysis result showed positive impact of fodders on the risers where organic matter was highly increased after three years. Farmers and stakeholders also evaluated this technology that has been successful and recommended for similar ecological regions.

关键词： Terrace riser fodder trees forage species maize and millet agri-silvo-pastoral system new model.

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Comparative study of mechanical, corrosion and erosion-corrosion properties of cast hyper-duplex and super-duplex stainless steels

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International Journal of minerals,metallurgy and materials 2020年第7期27卷 954-961页

作者： p.Nithin Raj p.K.Navaneethkrishnan K.Sekar m.A.Joseph Department of mechanical Engineering National Institute of TechnologyCalicutIndia

Duplex stainless steels(DSSs)used in subsea structures and desalination industries require high corrosion and erosion resistance as well as excellent mechanical *** newly introduced cast duplex grade ASTm A8907 A has a unique composition and is expected to have a much better resistance to corrosion and erosion compared with the super-duplex grades 5 A and 6 *** work is a comparative study of the mechanical properties,corrosion,and erosion-corrosion resistance of super-duplex grades 5 A and 6 A and the hyper-duplex grade 7 *** three DSSs exhibited equiaxial austenite islands in the ferrite matrix and balanced phase *** hardness of the grade 7 A was nearly 15%higher than those of the super-duplex grades,which is attributed to the effect of the higher contents of W and mn in 7 *** impact toughness of grade 7 A was found to be lower than those of the super-duplex grades due to the carbide precipitation resulting from the partial substitution of mo with *** oxide layer strengthening effect of rare earth elements and the higher pitting resistance equivalent number(pREN)of grade7 A resulted in higher corrosion *** harder and more passive grade 7 A showed a 35%lower material loss during erosion-corrosion.

关键词： hyper-duplex stainless steels erosion−corrosion electrochemical corrosion marine environment super-duplex stainless steels

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photon interaction with semiconductor and scintillation detectors

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Nuclear Science and Techniques 2016年第3期27卷 159-170页

作者： v.p.singh n.m.badiger Department of physics Karnatak UniversityDharwad 580003India

mass attenuation coefficients,effective atomic numbers,and electron densities for semiconductor and scintillation detectors have been calculated in the photon energy range 1 keV-100 *** interaction parameters have been found to vary with detector composition and the photon *** variation in the parameters with energy is shown graphically for all the partial photon interaction *** effective atomic numbers of the detector were compared with the ZXCOm program,and the results were found to be *** of semiconductor and scintillation detectors are presented in terms of effective atomic *** study should be useful for comparing the detector performance in terms of gamma spectroscopy,radiation sensitivity,radiation measurement,and radiation *** results of the present investigation should stimulate research work for gamma spectroscopy and radiation measuring materials.

关键词：相互作用参数闪烁探测器半导体光子有效原子序数光谱探测器质量衰减系数能量变化

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X-Ray Radiation Sensing properties of ZnS Thin Film:A Study on the Effect of Annealing

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Chinese physics Letters 2017年第7期34卷 262-265页

作者： m.p.Sarma J.m.Kalita G.Wary Department of physics Cotton College Guwahati 781001 India Department of physics and Electronics Rhodes University Grahamstown 6140 South Africa

Chemically synthesized ZnS thin film is found to be a good x-ray radiation sensor. We report the effect of annealing on the x-ray radiation detection sensitivity of a ZnS thin film synthesized by a chemical bath deposition technique. The chemically synthesized ZnS films are annealed at 333, 363 and 393K for 1 h. Structural analyses show that the lattice defects in the films decrease with annealing. Further, the band gap is also found to decrease from 3.38 to 3.21 eV after annealing at 393K. Current-voltage characteristics of the films are studied under dark and x-ray irradiation conditions. Due to the decrease of lattice defects and band gap, the conductivity under dark conditions is found to increase from 2.06 × 10^-6 to 1.69 × 10^-5 S/em, while that under x-ray irradiation increases from 4.13 × 10^-5 to 5.28 ×10^-5 S/cm. On the other hand, the x-ray radiation detection sensitivity of the films is found to decrease with annealing. This decrease of detection sensitivity is attributed to the decrease of the band gap as well as some structural and surface morphological changes occurring after annealing.

关键词： ZnS X-Ray Radiation Sensing properties of ZnS Thin Film:A Study on the Effect of Annealing

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The Recovery of Two Long-logged Headwaters in Temengor Reservoir,perak,malaysia

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湿地科学 2011年第2期9卷 140-150页

作者： Zarul Hazrin Hashim Amir Shah Ruddin md Shah Khoo Khay Huat Shahrul Anuar md.sah mashhor mansor School of Biological Sciences Universiti Sains Malaysia11800 USM Pulau PinangMalaysia

A study on water quality of the two long-logged and abandoned headwaters in Temengor Reservoir was conducted to determine their natural *** this study,we used National Water Quality Standards for malaysia prepared by malaysian Department of Environment as an indicator for water quality *** parameters measured were dissolved oxygen（mg/L）,water temperature（℃）,pH,conductivity（mS/cm）,total dissolved solids（mg/ L）,water velocity（m/s）,ortho-phosphate（pO4-p）,nitrite-nitrogen（NO2-N）,nitrate-nitrogen（NO3,-N）and alkalinity. In general,water quality in Sungai Enam and Sungai Telang were in ClassⅠ,indicating water quality in both streams have *** on the t-test,Sungai Enam and Sungai Telang differed significantly in all parameters except for dissolved oxygen,NO2-N and *** spatial analyses（upper,middle and lower reaches comparisons）, the two-way ANOVA analysis shows that there were significant differences in all studied parameters between the two rivers except for dissolved oxygen,total dissolved solids,NO2-N and *** flow,hydrologic pathways,geomorphology,physical and environmental characteristics are essential elements in understanding the dynamics of water systems in Sungai Enam and Sungai *** to the recovery,these two headwaters are thus suitable for fish conservation and restoration sites.

关键词： water quality Temengor Reservoir hydrology nutrient headwaters

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polarized Debye Sheath in Degenerate plasmas

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Communications in Theoretical physics 2019年第11期71卷 1341-1345页

作者： m.Shahmansouri A.p.misra Department of physics Faculty of ScienceArak UniversityArakP.O.Box 38156-8-8349Iran Department of mathematics Siksha BhavanaVisva-Bharati(A Central University)Santiniketan-731235India

The force on a charged dust grain in a plasma due to polarization of thermal ions and degenerate electrons around the grain is derived in the limits of weakly relativistic and ultra-relativistic degeneracy of electrons. It is found that in both these cases, the magnitude of the polarization force is enhanced compared to that in classical plasmas. The influence of this force on dust-acoustic(DA) modes is examined and discussed. It is shown that the DA wave frequency in degenerate plasmas is significantly reduced compared to the classical DA mode.

关键词： degenerate plasma polarization force dust acoustic waves

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product yields for the photofission of ^(232)Th,^(234,238)U,^(237)Np,and ^(239,240,242)pu actinides at various incident photon energies

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Nuclear Science and Techniques 2018年第10期29卷 221-228页

作者： m.R.pahlavani p.mehdipour Department of physics Faculty of Basic Science University of Mazandaran

photofission fragments mass yield for^(232)Th,^(234;238) U,^(237) Np, and^(239;240;242) pu isotopes are *** calculations are done using a developed approach based on Gorodisskiy's phenomenological formalism. The Gorodisskiy's method is developed to be applied for the neutron-induced fission. Here we revised it for application to photofission. The effect of emitted neutron prior to fission on the fission fragment mass yields has also been studied. The peak-to-valley ratio is extracted for the240 pu isotope as a function of energy. Obtained results of the present formalism are compared with the available experimental data. Satisfactory agreement is achieved between the results of present approach and the experimental data.

关键词： Fission fragments Fragment mass yield photofission Neutron fission Heavy nuclei peak-to-valley

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An Imbalanced Dataset and Class Overlapping Classification model for Big Data

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Computer Systems Science & Engineering 2023年第2期44卷 1009-1024页

作者： mini prince p.m.Joe prathap Department of Information Technology St.Peter’s College of Engineering and TechnologyChennai600054TamilnaduIndia Department of Information Technology R.M.D Engineering CollegeChennai601206TamilnaduIndia

most modern technologies,such as social media,smart cities,and the internet of things(IoT),rely on big *** big data is used in the real-world applications,two data challenges such as class overlap and class imbalance *** dealing with large datasets,most traditional classiﬁers are stuck in the local optimum *** a result,it’s necessary to look into new methods for dealing with large data *** solutions have been proposed for overcoming this *** rapid growth of the available data threatens to limit the usefulness of many traditional *** such as oversampling and undersampling have shown great promises in addressing the issues of class *** all of these techniques,Synthetic minority Oversampling TechniquE(SmOTE)has produced the best results by generating synthetic samples for the minority class in creating a balanced *** issue is that their practical applicability is restricted to problems involving tens of thousands or lower instances of *** this paper,we have proposed a parallel mode method using SmOTE and mapReduce strategy,this distributes the operation of the algorithm among a group of computational nodes for addressing the aforementioned *** proposed solution has been divided into three ***ﬁrst stage involves the process of splitting the data into different blocks using a mapping function,followed by a pre-processing step for each mapping block that employs a hybrid SmOTE algo-rithm for solving the class imbalanced *** each map block,a decision tree model would be ***,the decision tree blocks would be com-bined for creating a classiﬁcation *** have used numerous datasets with up to 4 million instances in our experiments for testing the proposed scheme’s *** a result,the Hybrid SmOTE appears to have good scalability within the framework proposed,and it also cuts down the processing time.

关键词： Imbalanced dataset class overlapping SmOTE mapReduce parallel programming oversampling

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Acoustic properties of sintered FeCrAlY foams with open cells (Ⅰ): Static flow resistance

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Science China(Technological Sciences) 2008年第11期51卷 1803-1811页

作者： m. KEpETS A. p. DOWLING Cambridge University Engineering Department Cambirdge CB2 1PZ U.K.

Open celled metal foams fabricated through the route of metal sintering are a new class of material that offers novel mechanical and acoustic properties. The metal sintering approach offers a cost-effective means for the mass-production of open-cell foams from a range of materials, including high-temperature steel alloys. The mechanical properties of open-celled steel alloy (FeCrAlY) foams have been characterized in previous studies, with focus placed on the influence of processing defects on stiffness and strength. In this work, the low-Reynolds number fluid properties of FeCrAlY foams were investigated both theoretically and experimen- tally. Specifically, the static flow resistance of the sintered foams important for heat transfer, filtration and sound absorption was modeled based on a cylinder and a sphere arranged in a periodic lattice at general incidence to the flow. Experimental measurements were subsequently carried out to validate theoretical predictions, with good agreement achieved.

关键词： metal foam static flow resistance modeling experiment

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ON THE UNIQUENESS OF THE WEAK SOLUTIONS OF A QUASILINEAR HYpERBOLIC SYSTEm WITH A SINGULAR SOURCE TERm

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Chinese Annals of mathematics,Series B 2002年第3期23卷 317-324页

作者： J.p.DIAS m.FIGUEIRA Dedicated to the memory of Jacques-Louis Lions Dedicated to the memory of Jacques-Louis Lions

This paper is a continuation of the authors' previous paper [1]. In this paper the authors prove, assuming additional conditions on the initial data, some results about the existence and uniqueness of the entropy weak... 详细信息

关键词： Cauchy problem Weak solution Quasilinear hyperbolic system

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