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Effects of of Habitats and Pesticides on Aerobic Capacity and Survival of Soil Fauna

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Biomedical and Environmental Sciences 2005年第3期18卷 169-175页

作者： G. TRIPATHI B. m. SHARmA Department of Zoology J. N. Vyas University Jodhpur-342 001 IndiaDepartment of Zoology J. N. Vyas University Jodhpur-342 001 India

Objective Faunal health is largely dependent on their soil environment and available litter quality. So the effects of different soil habitats and pesticides on citrate synthase (CS) activity of soil fauna and its population were studied. methods The soil animals were collected from different pedoecosystems for habitat study. Whereas Vigna radiata based system was selected for pesticidal observations. The field was divided into five equal plots for control and treatment of γ-BHC, quinalphos, carbaryl and cypermethrin. Soil fauna was collected by quadrat method and extracted by Tullgren funnel. Individuals of a species having similar sizes were collected for the estimation of CS activity. They were homogenized and fractions were obtained by differential centrifugation. The activity of CS was assayed spectrophotometrically. Results Citrate synthase (CS) activity of beetle (Rasphytus fregi), woodlouse (Porcellio laevis) and centipede (Scolopendra morsitans) varied significantly with respect to changes in different soil habitats. Though the CS activity of R. fregi, P. laevis, and S. morsitans differed among themselves but the highest activity of CS in these animals was in V. radiata and lowest in A. nilotica based pedoecosystem. The aerobic capacity of centipede was maximum followed by woodlouse and beetle. The treatment of γ-BHC, quinalphos, carbaryl and cypermethrin significantly reduced the CS activity of these animals. γ-BHC showed maximum reduction in CS activity indicating highly toxic effect of organochlorine on aerobic metabolism of soil fauna. However, minimum reduction was observed in response to carbaryl (in beetle) or cypermethrin (in woodlouse/centipede) leading to impairment of aerobic capacity. The differences in pesticide effects might be assigned to the differences in chemical nature of pesticides and their interactions with below-ground fauna. Treatment of γ-BHC and quinalphos reduced the population of Acari, Coleoptera, Collembola, other arthropods as

关键词： Citrate synthase Habitat Pesticide Soil fauna and desert

KAI2-and mAX2-mediated Responses to Karrikins and Strigolactones Are Largely Independent of HY5 in Arabidopsis Seedlings

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molecular Plant 2013年第1期6卷 63-75页

作者： mark T. Waters Steven m. Smitht Plant Energy Biology University of Western Australia Crawley Western Australia 6009 Australia School of Chemistry and Biochemistry University of Western Australia Crawley Western Australia 6009 Australia

Karrikins are butenolide compounds released from burning vegetation that stimulate seed germination and enhance seedling photomorphogenesis. Strigolactones are structurally similar plant hormones that regulate shoot and root development, and promote the germination of parasitic weed seeds. In Arabidopsis, the F-box protein mAX2 is required for responses to karrikins and strigolactones, and the a/~ hydrolase KAI2 is necessary for responses to karrikins. Both mAX2 and KAI2 are essential for normal light-dependent seedling development. The bZIP transcription factor HY5 acts downstream of multiple photoreceptors and promotes photomorphogenesis, but its relationship with mAX2 and KAI2 in terms of seedling development and responses to karrikins and strigolactones is poorly defined. Here, we dem- onstrate that HY5 action is genetically separable from that of mAX2 and KAI2. While by5 mutants have weak hypoco- tyl elongation responses to karrikins and the artificial strigolactone GR24, they have normal transcriptional responses, suggesting that HY5 is not involved in perception or action of karrikins or strigolactones. Furthermore, we show that overexpression of KAI2 is sufficient to enhance responses to both karrikins and GR24 in wild-type seedlings, and that KAI2 overexpression partially suppresses the hy5 long hypocotyl phenotype. These results suggest that KAI2 and mAX2 define a regulatory pathway that largely operates independently of HY5 to mediate seedling responses to abiotic signals such as smoke and light.

关键词： smoke karrikin strigolactone KAI2 HY5 photomorphogenesis.

Studies on Physical Chemistry of Rubber-Rice Husk Ash Composites

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Journal of Renewable materials 2019年第2期7卷 171-192页

作者： V.Subrahmanian m.Albert Noble Einstien Department of Rubber and Plastics Technology Anna UniversityMIT CampusChrompetINDIA 60044 master of Technology Rubber and Plastics DepartmentAnna UniversityMIT Campus

Nowadays an alternate source of filler from renewable and plant derivatives are being thought of in rubber industries due to their reliability,environmental and economic *** Husk Ash(RHA)a byproduct of the rice milling industry is obtained on partial and as well as full combustion of the rice *** ash is a good source of silica,silicates and needle shaped carbon and hence can be used as filler for *** the present study,a detailed investigation was carried out to understand the RHA as reinforcing material using mechanical properties and fractography using *** rubbers studied were natural rubber(NR),poly chloroprene(CR)and ethylene propylene diene monomer(EPDm).Interestingly,the RHA added NR stock on open mill mixing generated considerable amount of static *** properties of NR were found to be as good as regular *** compounds behaved well during *** the properties were found to be ***-RHA compounds were found to result in higher viscosity and the properties were not as *** SEm studies showed surprisingly cohesive failure as evidenced with the presence of flow lines and the fibrous filler(RHA)remains embedded in the matrix regardless of the chemistry of the repeating unit,NR,EPDm and the chlorine containing monomer inCR.

关键词： Rice husk ash rubber composites natural rubber polychloroprene rubber EPDm mooney Scorch SEm fractography

Strongly Irreducible Submodules of modules

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Acta mathematica Sinica,English Series 2006年第4期22卷 1189-1196页

作者： A.KHAKSARI m.ERSHAD H.SHARIF Department of mathematics Shiraz University Shiraz71454I.R.Iran

Strongly irreducible submodules of modules are defined as follows： A submodule N of an Rmodule m is said to be strongly irreducible if for submodules L and K of m, the inclusion L ∩ K ∈ N implies that either L ∈ N or K ∈ N. The relationship among the families of irreducible, strongly irreducible, prime and primary submodules of an R-module m is considered, and a characterization of Noetherian modules which contain a non-prime strongly irreducible submodule is given.

关键词： irreducible and strongly irreducible module distributive module

A fuzzy-logic-based approach to accurate modeling of a double gate mOSFET for nanoelectronic circuit design

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Journal of Semiconductors 2012年第9期33卷 43-49页

作者： F.Djeffal A.Ferdi m.Chahdi LEA Department of ElectronicsUniversity of Batna05000 BatnaAlgeria LEPCm Department of ElectronicsUniversity of Batna05000 BatnaAlgeria

The double gate （DG） silicon mOSFET with an extremely short-channel length has the appropriate fea- tures to constitute the devices for nanoscale circuit design. To develop a physical model for extremely scaled DG mOSFETs, the drain current in the channel must be accurately determined under the application of drain and gate voltages. However, modeling the transport mechanism for the nanoscale structures requires the use of overkill meth- ods and models in terms of their complexity and computation time （self-consistent, quantum computations ）. Therefore, new methods and techniques are required to overcome these constraints. In this paper, a new approach based on the fuzzy logic computation is proposed to investigate nanoscale DG mOSFETs. The proposed approach has been implemented in a device simulator to show the impact of the proposed approach on the nanoelectronic cir- cuit design. The approach is general and thus is suitable for any type ofnanoscale structure investigation problems in the nanotechnology industry.

关键词： nanoscale circuit DG mOSFET fuzzy modelling computational cost circuit design

Effects of ambient DIN:DIP ratio on the nitrogen uptake of harmful dinoflagellate Prorocentrum minimum and Prorocentrum donghaiense in turbidistat

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Chinese Journal of Oceanology and Limnology 2011年第4期29卷 746-761页

作者：李纪 Patricia m. GLIBERT Jeffrey A. ALEXANDER University of maryland Center for Environmental Science Horn Point Laboratory PO Box 775 Cambridge MD 21613 USA

The effects of varying nitrogen （N）： phosphorus （P） ratios on the growth and N-uptake and assimilation of the harmful dinoflagellates Prorocentrum minimum and Prorocentrum donghaiense were examined in turbidistat culture experiments. Algal cultures were supplied with media containing PO4^3- in various concentrations to obtain a wide range of N：P ratios. Experiments to determine rates of N uptake and assimilation of different N sources （NO^3-, NH4^＋, urea and glycine by P. minimum and NO3^-, NH4^＋ by P. donghaiense） were conducted using ^15-N tracer techniques at each N：P ratio. The growth rates suggested nutrient limitation at both high and low N：P ratios relative to the Redfield ratio. On a diel basis, the growth of both species was regulated by the light-dark cycle, which may be a result of regulation of both lightdependent growth and light-independent nutrient uptake. maximum growth rates of both species always occurred at the beginning of light phase. In P-rich medium （low N：P ratio）, both species had higher N assimilation rates, suggesting N limitation. Low assimilation coefficients at high N：P ratios suggested P limitation of N uptake and assimilation. NO3 ^-and NH4^＋ contributed more than 90% of the total N uptake of P. minimum. Reduced N sources were more quickly assimilated than NO3^-. Highest average daily growth rates were recorded near an N：P ratio of 12 for both species. The N uptake rates of cultures at N：P ratios near Redfield ratio were more balanced with growth rates. The linkage between growth rates and N uptake/assimilation rates were conceptually described by the variation of cell N quota. The N：P ratios affect the N uptake and growth of Prorocentrum spp., and may regulate their bloom progression in eutrophic ecosystems.

关键词： harmful dinoflagellate N:P ratio nitrogen uptake continuous culture Prorocentrum spp

An Efficient Framework for Utilizing Underloaded Servers in Compute Cloud

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Computer Systems Science & Engineering 2023年第1期44卷 143-156页

作者： m.Hema S.Kanaga Suba Raja Department of Information Technology Easwari Engineering CollegeChennai600089India Department of Computer Science and Engineering Easwari Engineering CollegeChennai600089India

In cloud data centers,the consolidation of workload is one of the phases during which the available hosts are allocated *** phenomenon ensures that the least possible number of hosts is used without compromise in meeting the Service Level Agreement(SLA).To consolidate the workloads,the hosts are segregated into three categories:normal hosts,under-loaded hosts,and over-loaded hosts based on their *** is to be noted that the identification of an extensively used host or underloaded host is challenging to ***-old values were proposed in the literature to detect this *** current study aims to improve the existing methods that choose the underloaded hosts,get rid of Virtual machines(Vms)from them,andfinally place them in some other *** researcher proposes a Host Resource Utilization Aware(HRUAA)Algorithm to detect those underloaded and place its virtual machines on different hosts in a vibrant Cloud *** mechanism presented in this study is contrasted with existing mechanisms *** results attained from the study estab-lish that numerous hosts can be shut down,while at the same time,the user's workload requirement can also be *** proposed method is energy-efficient in workload consolidation,saves cost and time,and leverages active hosts.

关键词： Workload consolidation energy consumption under load server resource utilization

Lagrangian model of zooplankton dispersion:numerical schemes comparisons and parameter sensitivity tests

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Chinese Journal of Oceanology and Limnology 2011年第2期29卷 438-445页

作者：丘仲锋 Andrea m.DOGLIOLI 何宜军 Francois CARLOTTI Key Laboratory of Ocean Circulation and Waves Institute of Oceanology CAS Laboratoire d'Ocanographie Physique et Biogochimie Aix Marseille UniversiteCNRSUMR 6535MarseilleFrance

This paper presents two comparisons or tests for a Lagrangian model of zooplankton dispersion:numerical schemes and time ***,we compared three numerical schemes using idealized *** show that the precisions of the advanced Adams-Bashfold-moulton(ABm) method and the Runge-Kutta(RK) method were in the same order and both were much higher than that of the Euler ***,the advanced ABm method is more efficient than the RK method in computational memory requirements and time *** therefore chose the advanced ABm method as the Lagrangian particle-tracking ***,we performed a sensitivity test for time steps,using outputs of the hydrodynamic model,*** show that the time step choices depend on the fluid response time that is related to the spatial resolution of velocity *** method introduced by Oliveira et *** 2002 is suitable for choosing time steps of Lagrangian particle-tracking models,at least when only considering advection.

关键词： Lagrangian numerical scheme time steps zooplankton

Optimized Deep Learning methods for Crop Yield Prediction

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Computer Systems Science & Engineering 2023年第2期44卷 1051-1067页

作者： K.Vignesh A.Askarunisa A.m.Abirami KLN College of Information Technology Pottapalaiyam630612India Sethu Institute of Technology Kariyapatti626115India Thiagarajar College of Engineering Madurai625015India

Crop yield has been predicted using environmental,land,water,and crop characteristics in a prospective research *** it comes to predicting crop production,there are a number of factors to consider,including weather con-ditions,soil qualities,water levels and the location of the farm.A broad variety of algorithms based on deep learning are used to extract useful crops for *** combination of data mining and deep learning creates a whole crop yield pre-diction system that is able to connect raw data to predicted crop *** sug-gested study uses a Discrete Deep belief network with Visual Geometry Group(VGG)Net classiﬁcation method over the tweak chick swarm optimization approach to estimate agricultural *** Network’s successively stacked layers were fed the data *** on the input parameters,a crop produc-tion prediction environment is constructed using the network *** the tweak chick swarm optimization technique,the best characteristics of input data are preprocessed,and the optimal output is used as input for the classiﬁcation *** Deep belief network with the Visual Geometry Group Net clas-siﬁer is used to classify the data and forecast agricultural *** sug-gested model correctly predicts crop output with 97 percent accuracy,exceeding existing models by maintaining the baseline data distribution.

关键词： Data mining deep learning crop production tweak chick swarm optimization algorithm discrete deep belief network with VGG Net classiﬁer