http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Design and Performance Study of a Hot Water Driven 5 TR Capacity Absorption Cooling System
Anil Sharma,Bimal Kumar Mishra,Abhinav Dinesh,Ashok Misra 보안공학연구지원센터 2014 International Journal of u- and e- Service, Scienc Vol.7 No.6
Use of high grade electrical energy, generated from fossil fuels, for cooling has increased environmental concerns like global warming and ozone layer depletion. Hence, there is a need to reduce dependence on them and explore potential environmental friendly options. In this aspect, vapor absorption system has scope of utilizing low grade energy source i.e. hot water from solar panel, to generate cooling effect and are environment friendly as no chloro-floro-carbons are used. The most usual combination of absorber refrigerant pair in such system is lithium bromide water (LiBr–H2O), where water vapor is the refrigerant. In present work, a hot water driven, single stage, absorption cooling system, using a lithium bromide water solution, is analyzed for determining the effect of various parameters on coefficient of performance (COP). Four basic stages in the absorption cycle are generation, condensation, evaporation and absorption with ideally no moving part. A configuration of theses four stages, having 5 TR cooling capacity is determined and examined for the variation in COP corresponds to the change in pressure and concentration. The pressure parameter is varied in condenser and evaporator, resulting graph shows that the increment in pressure of evaporator increases the COP whereas increment of pressure in condenser decreases the COP. At lower inlet concentration of LiBr solution to the absorber gives increment in COP.
Estimating aquifer location using deep neural network with electrical impedance tomography
Sunam Kumar Sharma,Anil Kumar Khambampati,Kyung Youn Kim 한국전기전자학회 2020 전기전자학회논문지 Vol.24 No.4
Groundwater is essential source of the freshwater. Groundwater is stored in the body of the rocks or sediments, called aquifer. Finding an aquifer is a very important part of the geophysical survey. The best method to find the aquifer is to make a borehole. Single borehole is not a suitable method if the aquifer is not located in the borehole drilled area. To overcome this problem, a cross borehole method is used. Using a cross borehole method, we can estimate aquifer location more precisely. Electrical impedance tomography is use to estimate the aquifer location inside the subsurface using the cross borehole method. Electrodes are placed inside each boreholes and area between these boreholes are analysed. An aquifer is a non-uniform structure with complex shape which can represented by the truncated Fourier series. Deep neural network is evaluated as an inverse problem solver for estimating the aquifer boundary coefficients.
Avinash Kumar Acharya,Anil Kumar Sharma,Ch.S.S.S. Avinash,Sanjay Kumar Das,Lydia Gnanadhas,B.K. Nashine,P. Selvaraj 한국원자력학회 2017 Nuclear Engineering and Technology Vol.49 No.7
In liquid metal fast breeder reactors, postulated failures of the plant protection system may lead toserious unprotected accidental consequences. Unprotected transients are generically categorized astransient overpower accidents and transient under cooling accidents. In both cases, core meltdown mayoccur and this can lead to a molten fuel coolant interaction (MFCI). The understanding of MFCI phenomenais essential for study of debris coolability and characteristics during post-accident heat removal. Sodium is used as coolant in liquid metal fast breeder reactors. Viewing inside sodium at elevatedtemperature is impossible because of its opaqueness. In the present study, a methodology to depict MFCIphenomena using a flat panel detector based imaging system (i.e., real time radiography) is brought outusing a woods metal-water experimental facility which simulates the UO2-Na interaction. The developedimaging system can capture attributes of the MFCI process like jet breakup length, jet front velocity,fragmented particle size, and a profile of the debris bed using digital image processing methods likeimage filtering, segmentation, and edge detection. This paper describes the MFCI process and developedimaging methodology to capture MFCI attributes which are directly related to the safe aspects of a sodiumfast reactor.
Police, Anil Kumar Reddy,Vattikuti, S.V. Prabhakar,Mandari, Kotesh Kumar,Chennaiahgari, Manvitha,M.V., Phanikrishna Sharma,Valluri, Durga Kumari,Byon, Chan Elsevier 2018 CERAMICS INTERNATIONAL Vol.44 No.10
<P><B>Abstract</B></P> <P>A novel Cu<SUB>2</SUB>O/TiO<SUB>2</SUB>/Bi<SUB>2</SUB>O<SUB>3</SUB> ternary nanocomposite was prepared, in which copper oxide improves the visible light absorption of TiO<SUB>2</SUB> and bismuth oxide improves electron–hole separation. The ternary composite exhibited extended absorption in the visible region, as determined by UV–Vis diffuse reflectance spectroscopy. High-resolution transmission electron microscopy images showed close contact among the individual semiconductor oxides in the ternary Cu<SUB>2</SUB>O/TiO<SUB>2</SUB>/Bi<SUB>2</SUB>O<SUB>3</SUB> nanocomposite. Improved charge carrier separation and transport were observed in the Cu<SUB>2</SUB>O/TiO<SUB>2</SUB>/Bi<SUB>2</SUB>O<SUB>3</SUB> ternary composite using electrochemical impedance spectroscopy and photocurrent analysis. TiO<SUB>2</SUB> modified with bismuth and copper oxides showed exceptional photocatalytic activity for hydrogen production under natural solar light. With optimum bismuth and copper oxide loadings, the Cu<SUB>2</SUB>O/TiO<SUB>2</SUB>/Bi<SUB>2</SUB>O<SUB>3</SUB> ternary nanocomposite exhibited an H<SUB>2</SUB> production (3678 μmol/h) 35 times higher than that of bare TiO<SUB>2</SUB> (105 μmol/h). The synergistic effect of improved visible absorption and minimal recombination was responsible for the enhanced performance of the as-synthesized ternary nanocomposite.</P>
Suresh Kumar Sharma,Manmohan Singh Dardi,Anil Kumar Srivastava 대한수의학회 2005 Journal of Veterinary Science Vol.6 No.2
The present study was planned to investigate the pharmacokinetics of ceftriaxone in experimentally induced febrile buffalo calves (n = 5). The fever was induced by intravenous injection of E.coli lipopolysaccaride (1 µg/kg). To study the pharmacokinetics, ceftriaxone was administered at the dose rate of 10 mg/kg body wt. in all animals. At 1 min, the peak concentration of ceftriaxone was 79.4 ± 2.37 µg/ml and the drug was detected up to 6 h. The elimination rate constant was 0.35 ± 0.02 /h and elimination half-life was 2.04 ± 0.14 h. The apparent volume of distribution (Vd(area )) and total body clearance (ClB) were 1.21 ± 0.15 l/kg and 0.41 ± 0.03 l/kg/h, respectively. To maintain a minimum therapeutic concentration of 1 µg/kg, a satisfactory dosage regimen of cefriaxone in febrile buffalo calves is 19 mg/kg followed by 18 mg/kg at 8 h intervals.
Sunam Kumar Sharma,Anil Kumar Khambampati,Kyung Youn Kim 한국전기전자학회 2021 전기전자학회논문지 Vol.25 No.4
Subsurface topology estimation is an important factor in the geophysical survey. Electrical impedance tomography is one of the popular methods used for subsurface imaging. The EIT inverse problem is highly nonlinear and ill-posed; therefore, reconstructed conductivity distribution suffers from low spatial resolution. The subsurface region can be approximated as piece-wise separate regions with constant conductivity in each region; therefore, the conductivity estimation problem is transformed to estimate the shape and location of the layerboundary interface. Each layer interface boundary is treated as an open boundary that is described using front points. The subsurface domain contains multi-layers with very complex configurations, and, in such situations, conventional methods such as the modified Newton Raphson method fail to provide the desired solution. Therefore, in this work, we have implemented a 7-layer artificial neural network (ANN) as an inverse problem algorithm to estimate the front points that describe the multi-layer interface boundaries. An ANN model consisting of input, output, and five fully connected hidden layers are trained for interlayer boundary reconstruction using training data that consists of pairs of voltage measurements of the subsurface domain with three-layer configuration and the corresponding front points of interface boundaries. The results from the proposed ANN model are compared with the gravitational search algorithm (GSA) for interlayer boundary estimation, and the results show that ANN is successful in estimating the layer boundaries with good accuracy.
( Veena Singh ),( Ansarul Haq ),( Sarsij Sharma ),( Sanjeev Kumar ),( Aditya Kumar ),( Amarjeet Kumar ),( Neeraj Kumar ),( Anil Kumar ) 대한외상학회 2022 大韓外傷學會誌 Vol.35 No.2
Purpose: The coronavirus disease 2019 (COVID-19) pandemic has had major effects worldwide, including sudden and forceful setbacks to the healthcare system. The COVID-19 pandemic has also led to changes in the plastic and reconstructive management of emergency cases, including those due to road traffic accidents. This study analyzed changes in patterns of plastic surgery emergencies and modifications in consultation policies to minimize the exposure of healthcare workers. Methods: Data on plastic surgery emergency calls received from the trauma and emergency department were collected for a period of 2 months before and during lockdown. The data were then analyzed with respect to the cause, mechanism, and site of the injury, as well as other variables. Results: During lockdown, there was a 40.4% overall decrease in the plastic surgery emergency case volume (168 vs. 100). The average daily number of consultations before lockdown was 2.8 as compared to 1.6 during lockdown. Road traffic accidents remained the most common mechanism of injury in both groups (45.8% vs. 39.0%) but decreased in number during the lockdown (77 vs. 39). Household accidents, including burns, were the second most common cause of injury in both phases (7.7% vs. 20.0%), but their proportion increased significantly from 7.7.% to 20.0% in the lockdown phase (P=0.003). The percentage of minor procedures done in the emergency department increased from 53.5% to 72.0% during lockdown (P=0.002). Procedures in the operating room decreased by 73.1% during lockdown (67 vs. 18, P=0.001). Conclusions: The COVID-19 pandemic and lockdown orders in India greatly influenced trends in traumatic emergencies as observed by the plastic surgery team at our tertiary care center. Amidst all the chaos and limitations of the pandemic period, providing safe and prompt care to the patients presenting to the emergency room was our foremost priority.
Optical dating of late Quaternary carbonate sequences of Saurashtra, western India
Sharma, Komal,Bhatt, Nilesh,Shukla, Anil Dutt,Cheong, Dae-Kyo,Singhvi, Ashok Kumar Cambridge University Press 2017 Quaternary research Vol.87 No.1
<B>Abstract</B><P>Bioclastic carbonate deposits that formed because of a combination of nearshore marine, fluvial, and aeolian processes, occur along the Saurashtra coast and in the adjacent interior regions of western India. Whether these carbonates formed by marine or aeolian processes has been debated for many decades. The presence of these deposits inland poses questions as to whether they are climate controlled or attributable to postdepositional tectonic uplift. In particular, the debate centres on chronologic issues including (1) appropriate sampling strategies and (2) the use of <SUP>230</SUP>Th/<SUP>234</SUP>U and <SUP>14</SUP>C ages on the bulk carbonates. Using traces (<1%) of quartz grains trapped in carbonate matrices, optically stimulated luminescence (OSL) dating of quartz grains, deposited along with the carbonate grains, provides ages for the most recent deposition events. The OSL ages range from >165 to 44 ka for the shell limestones, 75-17 ka for the fluvially reworked sheet deposits, and 80-11 ka for miliolites deposited by aeolian processes. These are younger than the <SUP>230</SUP>Th/<SUP>234</SUP>U and <SUP>14</SUP>C ages and suggest that the inland carbonate deposits were reworked from older carbonate sediments that were transported during more arid phases.</P>