A Simple Method for Solving Type-2 and Type-4 Fuzzy Transportation Problems

Senthil Kumar, P. Korean Institute of Intelligent Systems 2016 INTERNATIONAL JOURNAL of FUZZY LOGIC and INTELLIGE Vol.16 No.4

In conventional transportation problem (TP), all the parameters are always certain. But, many of the real life situations in industry or organization, the parameters (supply, demand and cost) of the TP are not precise which are imprecise in nature in different factors like the market condition, variations in rates of diesel, traffic jams, weather in hilly areas, capacity of men and machine, long power cut, labourer's over time work, unexpected failures in machine, seasonal changes and many more. To counter these problems, depending on the nature of the parameters, the TP is classified into two categories namely type-2 and type-4 fuzzy transportation problems (FTPs) under uncertain environment and formulates the problem and utilizes the trapezoidal fuzzy number (TrFN) to solve the TP. The existing ranking procedure of Liou and Wang (1992) is used to transform the type-2 and type-4 FTPs into a crisp one so that the conventional method may be applied to solve the TP. Moreover, the solution procedure differs from TP to type-2 and type-4 FTPs in allocation step only. Therefore a simple and efficient method denoted by PSK (P. Senthil Kumar) method is proposed to obtain an optimal solution in terms of TrFNs. From this fuzzy solution, the decision maker (DM) can decide the level of acceptance for the transportation cost or profit. Thus, the major applications of fuzzy set theory are widely used in areas such as inventory control, communication network, aggregate planning, employment scheduling, and personnel assignment and so on.

A Simple Method for Solving Type-2 and Type-4 Fuzzy Transportation Problems

P. Senthil Kumar 한국지능시스템학회 2016 INTERNATIONAL JOURNAL of FUZZY LOGIC and INTELLIGE Vol.16 No.4

In conventional transportation problem (TP), all the parameters are always certain. But, many of the real life situations in industry or organization, the parameters (supply, demand and cost) of the TP are not precise which are imprecise in nature in different factors like the market condition, variations in rates of diesel, traffic jams, weather in hilly areas, capacity of men and machine, long power cut, labourer’s over time work, unexpected failures in machine, seasonal changes and many more. To counter these problems, depending on the nature of the parameters, the TP is classified into two categories namely type-2 and type-4 fuzzy transportation problems (FTPs) under uncertain environment and formulates the problem and utilizes the trapezoidal fuzzy number (TrFN) to solve the TP. The existing ranking procedure of Liou and Wang (1992) is used to transform the type-2 and type-4 FTPs into a crisp one so that the conventional method may be applied to solve the TP. Moreover, the solution procedure differs from TP to type-2 and type-4 FTPs in allocation step only. Therefore a simple and efficient method denoted by PSK (P. Senthil Kumar) method is proposed to obtain an optimal solution in terms of TrFNs. From this fuzzy solution, the decision maker (DM) can decide the level of acceptance for the transportation cost or profit. Thus, the major applications of fuzzy set theory are widely used in areas such as inventory control, communication network, aggregate planning, employment scheduling, and personnel assignment and so on.

Chloride ion refined galvanic replacement: Boosting monodispersity of Au-Ag hollow nanoparticles & their enhanced applications

Kamalesh Nehra,P. Senthil Kumar 한국물리학회 2018 Current Applied Physics Vol.18 No.10

In this present work, we have redesigned the well-known Turkevich protocol for promoting versatile galvanic replacement, resulting in the synthesis of hollow Au nanostructures by the sacrificial reduction of HAuCl4 on the as-prepared Ag nanoparticles in the presence of slight excess NaCl in order to dictate their core size to cavity ratio in a highly reproducible manner. The significance of chloride ion interaction in tuning the size/shape control was corroborated with the contrasting effect of other halide ions, namely bromine and iodine. The structure-property functional relationship of these artificial hollow metal nanostructures were not only established using the systematic optical absorption and TEM measurements, but also through enhanced spectroscopy measurements such as SEIRA and SERS, elucidating the dynamic advantage of hollow nanostructures over and above their solid monometallic counterparts. Further, the familiar 4-NA to p-PDA catalytic reduction kinetics demonstrate the unusual zeroth order characteristics in the presence of hollow metal nanostructures, unequivocally distinguishing it from the common first order characteristics associated with the corresponding solid metal nanoparticles, essentially attributed to the morphology tuned accessible higher total surface area, thus exemplifying the aesthetic compliance for future technological applications.

Measurements of scattering and absorption coefficients of diffusers with variation of surface area

Senthil Kumar P(센딜 꾸마르),Yong Hee Kim(김용희),Jin Yong Jeon(전진용) 한국소음진동공학회 2007 한국소음진동공학회 학술대회논문집 Vol.2007 No.11

Carbon sphere: Synthesis, characterization and elimination of toxic Cr(VI) ions from aquatic system

P. Senthil Kumar,R. Sivaranjanee,P. Sundar Rajan,A. Saravanan 한국공업화학회 2018 Journal of Industrial and Engineering Chemistry Vol.60 No.-

Carbon sphere has been newly prepared for the ejection of Cr(VI) ions. SEM-EDX, XRD and FTIR reports affirmed its quality. Trial and error analysis has been embraced to advance the system conditions. Langmuir maximum adsorption capacity (117.2 mg/g) was achieved at a pH of 2, adsorbent dosage of 4 g/L, contact time of 60 min and temperature of 30 °C for an initial Cr(VI) ion concentration of 50–500 mg/L. Adsorption process was controlled by surface diffusion. Pseudo-second order model was the best obeyed model. An exothermic and unconstrained sorption process was observed. Sticking probability explained that adsorption was favoured at low temperature.

Effects of IACC and its Variation on Annoyance of Heavy-weight Floor Impact Sounds

Senthil kumar. P(센딜 쿠마르),Shin-ichi Sato(사토신이치),Jin Yong Jeon(전진용) 한국소음진동공학회 2006 한국소음진동공학회 학술대회논문집 Vol.2006 No.11

Antitumor effect of Careya arborea against Ehrlich ascites carcinoma with reference to lipid peroxidation and enzymatic and non enzymatic antioxidant system in Swiss albino mice

Kumar, R Sambath,Sivakumar, T,Senthil, V,Murthy, N Venkateswara,Balasubramaniam, V,Sabi, R Kanaga,Sundram, R. Shanmuga,Perumal, P,Mazumder, U K,Gupta, M Kyung Hee Oriental Medicine Research Center 2008 Oriental pharmacy and experimental medicine Vol.8 No.2

The methanol extract of stem barks of Careya arborea Roxb. (MECA) (Family- Myrtaceae) was evaluated for antitumor activity and antioxidant status against Ehrlich's Ascites Carcinoma (EAC) bearing Swiss albino mice. After 24 h of tumor inoculation the MECA was administered at the doses of 50, 100 and 200 mg/kg body weight/mice/day for 14 days. After the last dose and 18 h fasting mice were sacrificed. The effect of MECA on the growth of transplantable murine tumor, life span of EAC bearing hosts, hematological profiles, serum and liver biochemical parameters were estimated. The MECA showed significant (P < 0.01) decrease in ascites volume, packed cell volume and viable cell count and prolonged the life span of EAC tumor bearing mice. Hematological profiles reverted to more or less normal levels in extract treated mice. The MECA also produced protective effect by decreasing the activity of serum enzymes, bilirubin and increase the protein and uric acid levels. MECA significantly (P < 0.05) decreased the levels of lipid peroxidation, while significantly (P < 0.05) increased the levels of glutathione content, vitamin C, vitamin E, superoxide dismutase and catalase CAT. The results indicate that MECA exhibited significant antitumor and antioxidant activity in EAC bearing mice.

Experimental investigations of Co3O4, SiO2, cotton seed oil additive blends in the diesel engine and optimization by ANN-SVM process

A.P. Senthil Kumar,S. Yuvaraj,S. Janaki 한양대학교 세라믹연구소 2020 Journal of Ceramic Processing Research Vol.21 No.2

The demand for alternative fuel replaces the pure utilization of diesel fuel in the engines. Nano additives and the biodiesel areintroduced as the additives for reducing the emission characteristics and fulfil the energy requirements. The main objectiveof this research is to determine the emission characteristics of metal additives and cottonseed added diesel. Three combinationsof cobalt oxide contributeto the fuel blend preparation, namely, cobalt oxide + cottonseed oil, Cobalt oxide + silicon oxide andseparate cobalt oxide in the diesel fuel. Such combinations are mixed in the diesel fuel by adopting the method of ultrasonicdispersed technique with three different proportions such as 25 ppm, 50 ppm and 100 ppm of Nano additives and B20, B40and B60 blends of cottonseed oil. The strategy of Artificial Neural Network-Support Vector Machine (ANN-SVM) is appliedto optimize and predict the better-reduced emission characteristics of CO, HC and NOx through the mat lab platform. Thetesting is carried out with five different load conditions such as 0, 25, 50, 75 and 100 N and a constant compression ratio 17.5. Terminally, the comparison between predicted and experimented values are also presented for determining the better cobaltoxide fuel blend combinations with minimum emission outflow. The combination of both additives such as silicon oxide andthe cobalt oxide proceeds better emission characteristics from both the predicted and the experimented outcomes. In which,the predicted outcomes are 64.1% of NOx, 0.018% of CO and 1.610% of HC.

Antitumor effect of Careya arborea against Ehrlich ascites carcinoma with reference to lipid peroxidation and enzymatic and non enzymatic antioxidant system in Swiss albino mice

R Sambath Kumar,T Sivakumar,V Senthil,N Venkateswara Murthy,V Balasubramaniam,R Kanaga Sabi,R. Shanmuga Sundram,P Perumal,U K Mazumder,M Gupta 경희대학교 융합한의과학연구소 2008 Oriental Pharmacy and Experimental Medicine Vol.8 No.2

The methanol extract of stem barks of Careya arborea Roxb. (MECA) (Family- Myrtaceae) was evaluated for antitumor activity and antioxidant status against Ehrlich’s Ascites Carcinoma (EAC) bearing Swiss albino mice. After 24 h of tumor inoculation the MECA was administered at the doses of 50, 100 and 200 mg/kg body weight/mice/day for 14 days. After the last dose and 18 h fasting mice were sacrificed. The effect of MECA on the growth of transplantable murine tumor, life span of EAC bearing hosts, hematological profiles, serum and liver biochemical parameters were estimated. The MECA showed significant (P < 0.01) decrease in ascites volume, packed cell volume and viable cell count and prolonged the life span of EAC tumor bearing mice. Hematological profiles reverted to more or less normal levels in extract treated mice. The MECA also produced protective effect by decreasing the activity of serum enzymes, bilirubin and increase the protein and uric acid levels. MECA significantly (P < 0.05) decreased the levels of lipid peroxidation, while significantly (P < 0.05) increased the levels of glutathione content, vitamin C, vitamin E, superoxide dismutase and catalase CAT. The results indicate that MECA exhibited significant antitumor and antioxidant activity in EAC bearing mice. The methanol extract of stem barks of Careya arborea Roxb. (MECA) (Family- Myrtaceae) was evaluated for antitumor activity and antioxidant status against Ehrlich’s Ascites Carcinoma (EAC) bearing Swiss albino mice. After 24 h of tumor inoculation the MECA was administered at the doses of 50, 100 and 200 mg/kg body weight/mice/day for 14 days. After the last dose and 18 h fasting mice were sacrificed. The effect of MECA on the growth of transplantable murine tumor, life span of EAC bearing hosts, hematological profiles, serum and liver biochemical parameters were estimated. The MECA showed significant (P < 0.01) decrease in ascites volume, packed cell volume and viable cell count and prolonged the life span of EAC tumor bearing mice. Hematological profiles reverted to more or less normal levels in extract treated mice. The MECA also produced protective effect by decreasing the activity of serum enzymes, bilirubin and increase the protein and uric acid levels. MECA significantly (P < 0.05) decreased the levels of lipid peroxidation, while significantly (P < 0.05) increased the levels of glutathione content, vitamin C, vitamin E, superoxide dismutase and catalase CAT. The results indicate that MECA exhibited significant antitumor and antioxidant activity in EAC bearing mice.

Molecular characterization of chromium resistant gram-negative bacteria isolated from industrial effluent: Bioremedial activity

P.R. Yaashikaa,P. Senthil Kumar,A. Saravanan 한국공업화학회 2019 Journal of Industrial and Engineering Chemistry Vol.80 No.-

Hexavalent chromium has negative effect on the ecosystem and the aim is to molecularly characterize thebacteria that have high potential for detoxifying hexavalent chromium in tannery effluents. Onepredominant isolate identified was able to grow on medium with the hexavalent chromiumconcentrations of 2200 mg/L. The resistant isolate was identified as Pannonibacter phragmitetus after16S rRNA gene sequencing and annotation has been submitted in NCBI GenBank. The 3D protein structurewas modeled using I-TASSER. The results of chromium degrading ability evaluated using AtomicAbsorption Spectrophotometer showed that the isolate can be applied as potential bioremediation agentfor chromium removal.