WISE USE OF WETLAND FOR SUSTAINABLE LIVELIHOOD THROUGH PARTICIPATORY APPROACH： A CASE OF ADAPTING TO CLIMATE CHANGE     

Haq A H M Rezaul　Tapan Kumar Ghosal　Pritam Ghosh　M Aminul Islam 《湿地科学》2005,3(3):161-166

1INTRODUCTION Hydroponics(aGreekword,hydromeanswater andponos,labour),asoil-lessagriculture,isa termtobedescribedinseveralwaysinwhichplants cangrowwithoutsoil,byuseofaninertmedium whereplantcantakeupessentialnutrients,either fromwaterinwhichanutrientsolutionisaddedor fromorganicmaterialsthatexistsinthemedium.Thesemediacanbegravel,sand,peat,vermiculate,prelite,sawdustorotherplantmatters(organiccom ponents).Therefore,theprocessinwhichaquatic weedsaredumpedonwatertoconstructfloatingbed orart…  相似文献   

International Association of Geomorphologists Newsletter No. 14 (2/1997)     

Avijit Gupta 《地球表面变化过程与地形》1997,22(11):1079-1082

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Prediction of elastic settlement of rectangular raft foundation — a coupled FE–BE approach     

J. J. Mandal  D. P. Ghosh 《国际地质力学数值与分析法杂志》1999,23(3):263-273

A numerical method of analysis is proposed for computation of the elastic settlement of raft foundations using a FEM–BEM coupling technique. The structural model adopted for the raft is based on an isoparametric plate bending finite element and the raft–soil interface is idealized by boundary elements. Mindlin's half-space solution is used as a fundamental solution to find the soil flexibility matrix and consequently the soil stiffness matrix. Transformation of boundary element matrices are carried out to make it compatible for coupling with plate stiffness matrix obtained from the finite element method. This method is very efficient and attractive in the sense that it can be used for rafts of any geometry in terms of thickness as well as shape and loading. Depth of embedment of the raft can also be considered in the analysis. Copyright © 1999 John Wiley & Sons, Ltd.  相似文献   

Investigation of Hemispherical Variations of Soft X-Ray Solar Flares during Solar Cycles 21 to 24     

Prasad  Amrita  Roy  Soumya  Ghosh  Koushik  Panja  Subhash Chandra  Patra  Sankar Narayan 《Solar System Research》2021,55(2):169-182

Solar System Research - In the current investigation we have studied the distribution as well as the asymmetry of solar X-ray flares during the period 1976–2017 which corresponds to solar...  相似文献   

High‐Temperature Gas Sensors for Harsh Environment Applications: A Review     

Abhishek Ghosh  Chen Zhang  Sheldon Q. Shi  Haifeng Zhang 《洁净——土壤、空气、水》2019,47(8)

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Climate change impact assessment of a river basin using CMIP5 climate models and the VIC hydrological model   总被引：1，自引：1，他引：0  

Narendra Hengade  Subimal Ghosh 《水文科学杂志》2018,63(4):596-614

Climate change has significant impacts on water availability in larger river basins. The present study evaluates the possible impacts of projected future daily rainfall (2011–2099) on the hydrology of a major river basin in peninsular India, the Godavari River Basin, (GRB), under RCP4.5 and RCP8.5 scenarios. The study highlights a criteria-based approach for selecting the CMIP5 GCMs, based on their fidelity in simulating the Indian Summer Monsoon rainfall. The nonparametric kernel regression based statistical downscaling model is employed to project future daily rainfall and the variable infiltration capacity (VIC) macroscale hydrological model is used for hydrological simulations. The results indicate an increase in future rainfall without significant change in the spatial pattern of hydrological variables in the GRB. The climate-change-induced projected hydrological changes provide a crucial input to define water resource policies in the GRB. This methodology can be adopted for the climate change impacts assessment of larger river basins worldwide.  相似文献   

A new fluid factor and its application using a deep learning approach     

Changcheng Liu  Deva Prasad Ghosh  Ahmed Mohamed Ahmed Salim  Weng Sum Chow 《Geophysical Prospecting》2019,67(1):140-149

Amplitude interpretation for hydrocarbon prediction is an important task in the oil and gas industry. Seismic amplitude is dominated by porosity, the volume of clay, pore-filled fluid type and lithology. A few seismic attributes are proposed to predict the existence of hydrocarbon. This paper proposes a new fluid factor by adding a correct item based on the J attribute. The algorithm is verified through stochastic Monte Carlo modelling that contains various rock physical properties of sand and shale. Both gas and oil responses are separated by the new fluid factor. Furthermore, an approach based on the neural network model is trained using the deep learning method to predict the new fluid factor. The confusion matrix shows that this model performs well. This model allows the application of the new fluid factor in the seismic data. In this study, the Marmousi II data set is used to examine the performance of the new fluid factor, and the result is good. Most hydrocarbon reservoirs are identified in the shale–sandstone sequences. The combination of deep learning and the new fluid factor provides a more accurate way for hydrocarbon prediction.  相似文献   

Shock‐thermal history of the Agoudal (IIAB) iron meteorite from microstructural studies     

D. Ray  S. Ghosh  H. Chennaoui Aoudjehane  S. Das 《Meteoritics & planetary science》2019,54(12):3082-3088

The Agoudal IIAB iron meteorite exhibits only kamacite grains (~6 mm across) without any taenite. The kamacite is homogeneously enriched with numerous rhabdite inclusions of different size, shape, and composition. In some kamacite domains, this appears frosty due to micron‐scale rhabdite inclusions (~5 to 100 μm) of moderate to high Ni content (~26 to 40 wt%). In addition, all the kamacite grains in matrix are marked with a prominent linear crack formed during an atmospheric break‐up event and subsequently oxidized. This feature, also defined by trails of lowest Ni‐bearing (mean Ni: 23 wt%) mm‐scale rhabdite plates (fractured and oxidized) could be a trace of a pre‐existing γ–α interface. Agoudal experienced a very slow rate of primary cooling ~4 °C Ma^?1 estimated from the binary plots of true rhabdite width against corresponding Ni wt% and the computed cooling rate curves after Randich and Goldstein (1978). Chemically, Agoudal iron (Ga: 54 ppm; Ge: 140 ppm; Ir: 0.03 ppm) resembles the Ainsworth iron, the coarsest octahedrite of the IIAB group. Agoudal contains multiple sets of Neumann bands that are formed in space and time at different scales and densities due to multiple impacts with shock magnitude up to 130 kb. Signatures of recrystallization due to postshock low temperature mild reheating at about 400 °C are also locally present.  相似文献   

Seismic stability analysis of a hunchbacked retaining wall under passive state using method of stress characteristics     

Santhoshkumar  G.  Ghosh  Priyanka 《Acta Geotechnica》2020,15(10):2969-2982

Acta Geotechnica - The potential use of a hunchbacked retaining wall over a conventional retaining wall under the seismic passive state is emphasised in this study employing the method of stress...  相似文献   

INTERNATIONAL ASSOCIATION OF GEOMORPHOLOGISTS NEWSLETTER NO. 12 (3/1995)     

Avijit Gupta 《地球表面变化过程与地形》1996,21(5):483-485

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