http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
오늘 본 자료
Manikandan, P.,Sukumar, S. Techno-Press 2016 Advances in computational design Vol.1 No.2
The aim of this study is to investigate the effect of stiffened element and edge stiffener in the behaviour and flexural strength of built-up cold-formed steel beams. An experimental and analytical analysis of CFS channel sections in four different geometries is conducted, including simple channel sections, a stiffened channel section with or without edge stiffeners. Nonlinear finite element models are developed using finite element analysis software package ANSYS. The FEA results are verified with the experimental results. Further, the finite element model is used for parametric studies by varying the depth, thickness, and the effect of stiffened element, edge stiffener and their interaction with compression flanges on stiffened built-up cold-formed steel beams with upright edge stiffeners. In addition, the flexural strength predicted by the finite element analysis is compared with the design flexural strength calculated by using the North American Iron and Steel Institute Specifications for cold-formed steel structures (AISI: S100-2007) and suitable suggestion is made.
P. Manikandan,S. Sukumar 대한토목학회 2015 KSCE Journal of Civil Engineering Vol.19 No.7
This paper is concerned with the effect of stiffened element at the flange/web junction and complex edge stiffener in behaviour and strength of built-up cold-formed steel flexural members. An extensive experimental investigation and a finite element analysis of stiffened built-up cold-formed beam sections with complex stiffeners under two point loading is presented. A nonlinear finite element model is developed and verified against test results. All the results are compared with the design strength calculated using the North American Iron and Steel Institute Specification for cold-formed steel structures (AISI: S100, 2007). Following the validation, an extensive finite element parametric study is conducted to study the influences of a range of parameters, and the results are compared with the nominal design strength by AISI: S100 (2007) and suitable recommendation are made.
S. Manikandan,R. Saraswathi 대한환경공학회 2023 Environmental Engineering Research Vol.28 No.4
The treatment and reuse of industrial wastewater plays a foremost role in succeeding environmental protection and water security. The electrochemical treatment technology has attracted a great deal of attention because of its compact, high particulate removal, free from chemicals, automation, and minimum sludge generation. The objective of the study is to review the existing literature on COD (Chemical oxygen demand) removal from various industrial effluents using electrocoagulation technology, as well as the factors that influence the process. Electricity is passed through electro plates dipped in wastewater during the electrocoagulation process. Metal hydroxide formations occur, which removes pollutants from wastewater via the sedimentation and flotation mechanisms. After a thorough review of various literatures, a detailed discussion on the process influencing parameters such as pH, Current Density, Electrolysis Time, Conductivity, Stirring Speed, and Retention Time has been done which gives useful information on future scope of research in this area.
Manikandan S.,Saraswathi R. The Korean Electrochemical Society 2023 Journal of electrochemical science and technology Vol.14 No.2
The dye wastewater discharge from the textile industries mainly affects the aquatic environment. Hence, the treatment of this wastewater is essential for a pollutant-free environment. The purpose of this research is to optimize the dye removal efficiency for process influencing independent variables such as pH, electrolysis time (ET), and current density (CD) by using Box-Behnken design (BBD) optimization and Genetic Algorithm (GA) modelling. The electrocoagulation treatment technique was used to treat the synthetically prepared Reactive Black dye solution under batch mode potentiometric operations. The percentage of error for the BBD optimization was significantly greater than for the GA modelling results. The optimum factors determined by GA modelling were CD-59.11 mA/cm<sup>2</sup>, ET-24.17 minutes, and pH-8.4. At this moment, the experimental and predicted dye removal efficiencies were found to be 96.25% and 98.26%, respectively. The most and least predominant factors found by the beta coefficient were ET and pH respectively. The outcome of this research shows GA modeling is a better tool for predicting dye removal efficiencies as well as process influencing factors.
S. Nagini,P. Manikandan,R. Senthil Murugan,H. Abbas,S.K. Abraham 한국식품영양과학회 2007 Journal of medicinal food Vol.10 No.3
The present study was designed to evaluate the protective effects of ethanolic Ocimum sanctumleaf extractagainst 7,12-dimethylbenz[a]anthracene (DMBA)-induced genotoxicity, oxidative stress, and imbalance in xenobiotic-metab-olizing enzymes. Four different concentrations of ethanolic O. sanctumleaf extract (100, 200, 300, and 400 mg/kg of bodyweight) were administered to Wistar rats by intragastric intubation for five consecutive days followed by intraperitoneal in-jection of DMBA (35 mg/kg of body weight) 90 minutes after the final dose of the extract. Administration of DMBA in-creased bone marrow micronuclei, phase I enzymes, lipid peroxidation, and protein carbonyl formation. This was accompa-nied by a significant decrease in the activities of phase II detoxification enzymes and antioxidants in the liver, erythrocytes,and bone marrow. Pretreatment with ethanolic O. sanctumleaf extract at a concentration of 300 mg/kg of body weight sig-nificantly reduced micronuclei formation and phase I enzymes as well as lipid and protein oxidation with enhanced antioxi-dant and phase II enzyme activities. The results of the present study suggest that ethanolic O. sanctumleaf extract inhibitsDMBA-induced genotoxicity and oxidative stress by modulating xenobiotic-metabolizing enzymes, reducing the extent oflipid and protein oxidation and up-regulating antioxidant defenses.
Manikandan, N. Muguntha,Selvasekarapandian, S.,Sivakumar, R.,Meenakshisundaram, V.,Raghunath, V.M. 대한방사선 방어학회 2001 방사선방어학회지 Vol.26 No.3
The activity concentration of primordial radionuclides i.e., 238U series, 232Th series and 40K, in soil samples collected from Udagamandalam environment, have been measured by employing NaI(Tl) Gamma ray Spectrometer. The absorbed gamma dose rate has also been simultaneously measured by using both Environmental Radiation Dosimeter at each soil sampling location (ambient gamma dose) as well as from the gamma dose derived from the activity concentration of the primordial radionuclides. The results of activity concentration of each radionuclides in soil, absorbed dose rate in air due to soil activity and possible cosmic radiation at each location along with human effective dose equivalent for Udagamandalam environment are presented and discussed.
Comparative Study of Two Congestion Management Methods for the Restructured Power Systems
Manikandan, B.V.,Raja, S. Charles,Venkatesh, P.,Mandala, Manasarani The Korean Institute of Electrical Engineers 2011 Journal of Electrical Engineering & Technology Vol.6 No.3
Congestion management is one of the most challenging tasks of a system operator to ensure the operation of transmission system within operating limits. In this paper, cluster/zone method and relative electrical distance (RED) method for congestion management are compared based on the considered parameters. In the cluster/zone method, rescheduling of generation is based on user impact on congestion through the use of transmission congestion distribution factors. In the RED method, the desired proportions of generations for the desired overload relieving are obtained. Even after generation rescheduling, if congestion exists, load curtailment option is also introduced. Rescheduling cost, system cost, losses, and voltage stability parameter are also calculated and compared for the above two methods of congestion management. The results are illustrated on sample 6-bus, IEEE 30-bus, and Indian utility 69-bus systems.
Available Transfer Capability Enhancement with FACTS Devices in the Deregulated Electricity Market
Manikandan, B.V.,Raja, S. Charles,Venkatesh, P. The Korean Institute of Electrical Engineers 2011 Journal of Electrical Engineering & Technology Vol.6 No.1
In order to facilitate the electricity market operation and trade in the restructured environment, ample transmission capability should be provided to satisfy the demand of increasing power transactions. The conflict of this requirement and the restrictions on the transmission expansion in the restructured electricity market has motivated the development of methodologies to enhance the available transfer capability (ATC) of existing transmission grids. The insertion of flexible AC transmission System (FACTS) devices in electrical systems seems to be a promising strategy to enhance single area ATC and multi-area ATC. In this paper, the viability and technical merits of boosting single area ATC and multi-area ATC using Thyristor controlled series compensator (TCSC), static VAR compensator (SVC) and unified power flow controller (UPFC) in single device and multi-type three similar and different device combinations are analyzed. Particle swarm optimization (PSO) algorithm is employed to obtain the optimal settings of FACTS devices. The installation cost is also calculated. The study has been carried out on IEEE 30 bus and IEEE 118 bus systems for the selected bilateral, multilateral and area wise transactions.
E. Manikandan,K. Velmurugan,G.G. Sozhamannan,Balamuruga Mohan Raj.G,V.S.K. Venkatachalapathy 한양대학교 청정에너지연구소 2023 Journal of Ceramic Processing Research Vol.24 No.6
Grey relational analysis of the multiple responses, including Reynolds number, Nusselt number, heat transfer (W), heattransfer coefficient (W/m2 K), and heat flux (W/m2), was done as part of experiments based on a Taguchi orthogonal array. The best parameter levels was calculated and selected based on GRA on basis of the Grey Relational Grade (GRG). AnANOVA has been used to identify factors that significantly contribute to the response based on grade. Experiments was conductedat the optimum predicted conditions (Al2O3) and the response was found as follows; Reynolds Number (592), NusseltNumber (2.5), Heat transfer (Q) (510), Flux (W/m2) (17.8) and Heat transfer Coefficient (W/m2 K) (394). The experimentalvalue was found to be correlated with the predicted values of Reynolds number (610), Nusselt number (2.6), heat transfer (Q)(530), heat transfer coefficient (W/m2 K) (415), and heat flux (W/m2) (18.5), respectively. The experimental data were foundto have an excellent knowledge under the recommended conditions. Our study is a preliminary step towards developing asubstantially effective Al2O3-based base fluid to enhance the performance of the heat transfer process in a copper-based serpentineshape heat exchanger