Non-existence of Bianchi type-III bulk viscous string cosmological model in f(R,T) gravity     

M. Kiran  D. R. K. Reddy 《Astrophysics and Space Science》2013,346(2):521-524

A spatially homogeneous and anisotropic Bianchi type-III space-time is considered in the presence of bulk viscous fluid containing one dimensional cosmic strings in the frame work of f(R,T) gravity proposed by Harko et al. (Phys. Rev. D 84:024020, 2011). To get a determinate solution of the field equations of this theory, we have used (i) a barotropic equation of state for the pressure and density and (ii) the bulk viscous pressure is proportional to the energy density. It is interesting to observe that, in this case, Bianchi type-III bulk viscous string cosmological model does not exist and degenerates into vacuum model of general relativity.  相似文献   

Analysis of apparent thermal inertia over different land use / land cover types using envisat AATSR data     

K. V. S. Badarinath  T. R. Kiran Chand 《Journal of the Indian Society of Remote Sensing》2007,35(2):185-191

  相似文献   

Hyper-Spectral Imager in visible and near-infrared band for lunar compositional mapping     

A. S. Kiran Kumar  A. Roy Chowdhury 《Journal of Earth System Science》2005,114(6):721-724

  相似文献   

Real-time prediction of movement,intensity and storm surge of very severe cyclonic storm Hudhud over Bay of Bengal using high-resolution dynamical model     

Raghu Nadimpalli  Krishna K. Osuri  Sujata Pattanayak  U. C. Mohanty  M. M. Nageswararao  S. Kiran Prasad 《Natural Hazards》2016,81(3):1771-1795

  相似文献   

Bi‐Solute Sorption of Estrogens at Low Concentration: Two‐ and Three‐Parametric Analysis     

A. Kiran Kumar  P. Suresh Babu  S. Venkata Mohan 《洁净——土壤、空气、水》2012,40(11):1236-1243

Competitive sorption of estriol (E3) and 17α‐ethinylestradiol (EE2) was studied on activated charcoal. Better sorption of E3 (88.9%) and EE2 (69.5%) was observed with single‐solute sorption system than with bi‐solute sorption system. Single‐solute sorption kinetics of E3 and EE2 were evaluated with two (Langmuir and Freundlich) and three (dual mode and Song) parameter models. Freundlich model (R², 0.9915 (E3); 0.9875 (EE2)) showed good prediction compared to other models for single‐solute sorption. Adsorption capacity documented reduced efficacy (86.4% (E3); 65.9% (EE2)) due to induced competitive behavior between the estrogens in aqueous phase. Bi‐solute adsorption kinetics of E3 and EE2 were described by IAST with two and three parameter models. Among these models, IAST‐Freundlich model (R², 0.9765 (E3); 0.9985 (EE2)) was best in predicting bi‐solute sorption of E3 and EE2 by activated charcoal. All these models showed favorable representation of both single‐ and bi‐solute sorption behaviors.  相似文献   

Comparison of Pine Bark,Biochar and Zeolite as Sorbents for NH4+‐N Removal from Water          下载免费PDF全文

Kiran Hina  Mike Hedley  Marta Camps‐Arbestain  James Hanly 《洁净——土壤、空气、水》2015,43(1):86-91

  相似文献   

Thermolysis Product Distribution of Solid Waste Obtained From Olive Oil Production     

Ebru Mehmetli  Özgür Dogan  Mustafa Tiris  Nilgün Ciliz Kiran  Georg Matuschek 《洁净——土壤、空气、水》2008,36(3):315-319

  相似文献   

Comparison of MODIS vegetation continuous field — based forest density maps with IRS-LISS III derived maps     

C. Jeganathan  V. K. Dadhwal  Kiran Gupta  P. L. N. Raju 《Journal of the Indian Society of Remote Sensing》2009,37(4):539-549

The study compared forest cover maps derived using coarse resolution vegetation continuous fields (MODIS VCF; 500m resolution) with the maps derived from medium resolution (24m; IRS LISS-III) data. The comparison of VCF, per cent tree cover product, for the years 2000 to 2004 with LISS III forest density class maps of 2001 and 2003 was carried out for two sites representing hilly (Uttarakhand) and undulating terrains (Madhya Pradesh). Slicing VCF to corresponding forest crown cover, i.e., 0–10%, 10–40%, 40–70% and >70% produced considerable difference in forest area estimates when compared to original LISS III derived crown cover area. The corresponding value range in VCF for 0–10% of actual forest cover were 0–31% and 0–25% in 2 sites respectively, and the respective limit was consistent at 1–20% when VCF range were sliced with respect to upscaled LISS III at 500m resolution. Similarly, all other class limits were also found through iterative process. These limits were similar, within a site, across five years. Spatial Kappa match between these two data indicated higher match in 40–70% class, and also in undulating site. When compared at same resolution, similar forest area cover estimated with weighted area upscaling gave closest match. The study is useful in knowing the usability and limits of VCF product, and utility of spatial Kappa.  相似文献   

Mooring forces in horizontal interlaced moored floating pipe breakwater with three layers   总被引：2，自引：0，他引：2  

Arkal Vittal Hegde  Kiran Kamath  J.C. Deepak 《Ocean Engineering》2008,35(1):165-173

The paper presents the results from model scale experiments on the study of forces in the moorings of horizontally interlaced, multi-layered, moored floating pipe breakwaters. The studies are conducted with breakwater models having three layers subjected to waves of steepness H_i/L (H_i is the incident wave height and L the wavelength) varying from 0.0066 to 0.0464, relative width W/L (W is the width of breakwater) varying from 0.4 to 2.65, and relative spacing S/D (S is the spacing of pipes and D the diameter of pipe) of 2 and 4. The variation of measured normalized mooring forces on the seaward side and leeward side are analyzed by plotting non-dimensional graphs depicting f/γW² (f is the force in the mooring per unit length of the breakwater, γ the weight density of sea water) as a function W/L for various values of H_i/d (d is the depth of water). It is found that the force in the seaward side mooring increases with an increase in H_i/L for d/W values ranging between 0.081 and 0.276. The experimental results also reveal that the forces in the seaward side mooring decrease as W/L increases, up to a value of W/L=1.3, and then increases with an increase in W/L. It is also observed that the wave attenuation characteristics of breakwater model with relative spacing of 4 is better than that of the model with relative spacing of 2. The maximum force in the seaward side mooring for model with S/D=4 is lower compared to that for the breakwater model with S/D=2. A multivariate non-linear regression analysis has been carried out for the data on mooring forces for the seaside and leeside.  相似文献   

Physical model studies on wave transmission of a submerged inclined plate breakwater     

Subba Rao  Kiran G. Shirlal  Roobin V. Varghese  K.R. Govindaraja 《Ocean Engineering》2009,36(15-16):1199-1207

This paper examines the results of physical model studies conducted in a monochromatic wave flume, to evaluate the wave transmission characteristics of a submerged plate breakwater consisting of a fixed plate of 0.50 m length and 0.003 m thickness. The model was oriented at varying inclinations and submergence. The influence of wave steepness, relative depth, relative submergence and angle of inclination on wave transmission was analysed. It was found that the horizontal plate is effective for short waves with steepness parameter higher than 5×10^?3 in relative depth grater than 0.21. The plate oriented at an angle of inclination of 60° is found to be effective for the entire ranges of wave parameters considered for the study and it reduces the wave height by about 40%.  相似文献