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- P. Palpandian
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Journals
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Manoharan, S.
- Anti-hyperglycemic and Anti-lipidperoxidative Effects of Tephrosia purpurea leaf Extract in Streptozotocin Induced Diabetic Rats
Abstract Views :1405 |
PDF Views:376
Authors
Source
Journal of Natural Remedies, Vol 7, No 1 (2007), Pagination: 43-49Abstract
Objective: The main objective of the present study was to evaluate the anti-hyperglycemic and anti-lipidperoxidative effects of Tephrosia purpurea leaves (TpALet) in streptozotocin induced diabetic rats. Materials and Methods : The aqueous extract of Tephrosia purpurea leaves was evaluated for its anti-hyperglycemic and antilipidperoxidative effects in streptozotocin (50mg/kg bw) induced diabetic rats. The anti-hyperglycemic effect of the leaf extract was also compared with the standard anti-diabetic drug glibenclamide (600μg/kg bw). Glucose, glycosylated hemoglobin, total hemoglobin, lipid peroxidation by products (TBARS), enzymatic and non-enzymatic anti-oxidants in blood sample and hexokinase and glucose-6-phosphatase activities in liver were estimated calorimetrically in control and experimental animals. Results: "TpALet" considerably reduced the levels of blood glucose, glycosylated hemoglobin and enhanced the status of total hemoglobin, anti-oxidants and hepatic hexokinase and glucose-6-phosphatase activities. "TpALet" also showed a comparable effect to that of glibenclamide. Conclusion: Our results indicate that T. purpurea leaves have potent anti-hyperglycemic and anti-lipidperoxidative effects, which are probably due to its anti-oxidants effect.Keywords
Tephrosia Purpurea, Streptozotocin, TBARS, Anti-oxidants, TpALetFull Text
- Lipid Peroxidation and Antioxidant Status in Prostate Cancer Patients
Abstract Views :466 |
PDF Views:175
Authors
Affiliations
1 Dept of Biochemistry, Acharya Nagarjuna University, Guntur, AP- Pin: 522510, IN
2 Dept of Biochemistry, Annamalai University, Tamilnadu-608 002, IN
3 Department of biochemistry Mahatma Gandhi College, Guntur, AP- Pin: 522006, IN
4 Dept. of Medicine, GMC, Guntur, AP- Pin: 522 001, IN
1 Dept of Biochemistry, Acharya Nagarjuna University, Guntur, AP- Pin: 522510, IN
2 Dept of Biochemistry, Annamalai University, Tamilnadu-608 002, IN
3 Department of biochemistry Mahatma Gandhi College, Guntur, AP- Pin: 522006, IN
4 Dept. of Medicine, GMC, Guntur, AP- Pin: 522 001, IN
Source
Indian Journal of Science and Technology, Vol 3, No 1 (2010), Pagination: 83-86Abstract
Objective: To assess the oxidative stress in plasma and erythrocytes of prostate cancer patients by measuring the levels of lipid peroxidation and antioxidants. Patients&methods: 20 newly diagnosed prostate cancer patients and an equal number of age between 55-70 years and sex matched normal subjects from Guntur, AP, India were chosen for the study. Biochemical parameters like TBARS, enzymatic antioxidants, non enzymatic antioxidants were analyzed and monitored in plasma and erythrocyte membranes of normal and prostate cancer patients. Results: The subjects were ranging in age from 55-70 years. Changes observed from baseline expressed as mean ±SD in plasma of normal and prostate cancer patients are TBARS 3.8±0.2, 6.9±0.52(PConclusion: The antioxidants and lipid peroxides levels in prostate cancer patients were altered when compared to normal patients. The picture of prostate cancer in India is potentially underestimated owing to scant data.Keywords
Oxidative Stress, Lipid Peroxidation, Antioxidants, Prostate CancerFull Text
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- Performance Analysis and Comparison of Different Tuning Strategies of PI Controller in Conical Tank
Abstract Views :159 |
PDF Views:0
Authors
Affiliations
1 Department of Electronics and Instrumentation Engineering, Karpagam College of Engineering, Myleripalayam Village, Othakkal Mandapam Post, Coimbatore - 641032, Tamil Nadu, IN
1 Department of Electronics and Instrumentation Engineering, Karpagam College of Engineering, Myleripalayam Village, Othakkal Mandapam Post, Coimbatore - 641032, Tamil Nadu, IN
Source
Indian Journal of Science and Technology, Vol 9, No 11 (2016), Pagination:Abstract
Background/Objectives: An adaptive Proportional Integral (PI) controller for a conical tank liquid level process is simulated in MATLAB platform. Methods/Statistical analysis: The Scheduled PI and Internal model control (IMC) based PI performance are compared in terms of settling time rise time, overshoot, Integral of Squared Error (ISE), Integral of Absolute Error (IAE), Integral Time Absolute Error(ITAE) and disturbance rejection. For IMC based PI tuning, the exact model of the process obtained by on line estimation of process gain and time constant. Findings:The IMC based tuning procedure ensures good performance by Proportional and Integral (PI) controller. The Ziegler Nichols (ZN) tuning rules and estimation based tuning are used for scheduled Proportional and Integral (PI) and internal model control based PI controller. Applications/Improvements:Derivative controller can be added to this PI controller for distillation process.Keywords
Disturbance Rejection,IMC based PI, Integral of Square Error, Scheduled PIFull Text
- Reduction of Interaction in Multivariable System using LabVIEW
Abstract Views :149 |
PDF Views:0
Authors
Affiliations
1 Department of EIE, Karpagam College of Engineering, Coimbatore - 641032, Tamil Nadu, IN
1 Department of EIE, Karpagam College of Engineering, Coimbatore - 641032, Tamil Nadu, IN
Source
Indian Journal of Science and Technology, Vol 9, No 11 (2016), Pagination:Abstract
Background/Objectives: The aim of this paper is to design a decoupled PID controller for quadruple tank process. The major advantage of quadruple-tank process is that the multivariable zero can be positioned to both side of 's' Plane. Methods/Statistical Analysis: In this paper, the control of liquid levels in Quadruple tank process with non-linear dynamics is considered. The dynamic behavior of the system can be achieved in both minimum and a non-minimum phase by varying valve position. The process is simulated and the simulation results are presented to analyze the performance of PID controller. Findings: The multivariable process is decomposed into several independent single-loop sub-systems. The performance of the system is compared with and without decoupler. The Decoupled PID controller results show the improvement in performance. Applications/Improvements: The interaction between the tanks is reduced by designing the decoupler. The Decoupled PID controller results show the improvement in performance. The decoupled control provides control method for multivariable process using independent loop controllers.Keywords
De Coupler, Lab VIEW, Multivariable Control, Minimum Phase, Non-Minimum Phase, Quadruple Tank ProcessFull Text
- Evaluation of a Welding Power Source
Abstract Views :249 |
PDF Views:4
Authors
Affiliations
1 Welding Research Institute, BHEL, Trichy, IN
2 Electrical & Electronics Engg. Dept., REC, Trichy, IN
1 Welding Research Institute, BHEL, Trichy, IN
2 Electrical & Electronics Engg. Dept., REC, Trichy, IN
Source
Indian Welding Journal, Vol 23, No 2 (1991), Pagination: 76-79Abstract
A number of power sources are available today from different manufacturers for MIG/MAG welding. Thyristor power sources and transistor power sources are gaining popularity. The performance of MIG/ MAG welding power supplies is heavily dependent on their dynamic properties. However, present day codes are not adequate for evaluating the power source since dynamic properties are not taken in to consideration.
In this paper a simplified method is proposed for evaluation of a given power source which can form guidelines for ordering a new power source as well as to evaluate the same. Evaluation of arc stability, arc ignition and spatter level, are some of the factors considered in the present study.
- Modifying Effects of Mosinone-A on Glycoconjugates Levels in 7, 12-Dimethyl Benz(A) Anthracene Induced Hamster Buccal Pouch Carcinogenesis
Abstract Views :147 |
PDF Views:0
Authors
Affiliations
1 Dept. of Biochemistry and Biotechnology, Annamalai University, Annamalai Nagar-608002, IN
1 Dept. of Biochemistry and Biotechnology, Annamalai University, Annamalai Nagar-608002, IN
Source
Asian Journal of Research in Chemistry, Vol 3, No 2 (2010), Pagination: 459-463Abstract
The present study was designed to investigate the modifying effects of Mosinone-A on glycoconjugates (protein bound hexose, hexosamine, total sialic acid and fucose) levels in 7,12-dimethylbenz(a) anthracene (DMBA) induced hamster buccal pouch carcinogenesis 0.5% DMBA painting (three times per week) in hamster buccal pouches for 14 weeks resulted in the formation of well developed oral squamous cell carcinoma. We observed 100% tumor formation with marked abnormalities of glycoconjugates status in tumor bearing hamsters as compared to control animals. Oral administration of Mosinone-A at a dose of 2 mg/kg body weight, to DMBA painted hamsters on alternate days for 14 weeks, reduced the tumor formation as well as protected the levels of cell surface glycoconjugates in DMBA painted hamsters. The present study thus suggests that Mosinone-A has potent chemopreventive efficacy as well as protected the abnormalities on cell surface glycoconjugates during DMBA induced hamster buccal pouch carcinogenesis.Keywords
Oral Cancer, DMBA, Mosinone-A, Glycoconjugates.- Development of P.C. based Weld Monitoring System for Flash Butt Welding of Economiser Tubes
Abstract Views :190 |
PDF Views:5
Authors
K. Asokkumar
1,
C. S. Nizam
2,
V. R. Samuel
1,
K. G. K. Murti
1,
S. Manoharan
1,
P. Pughazhendi
2,
V. Ravindran
2
Affiliations
1 Welding Research Institute, BHEL, Trichy - 620 014, IN
2 Boiler plant of BHEL, Trichy - 620 014, IN
1 Welding Research Institute, BHEL, Trichy - 620 014, IN
2 Boiler plant of BHEL, Trichy - 620 014, IN
Source
Indian Welding Journal, Vol 28, No 3&4 (1995), Pagination: 30-35Abstract
Flash butt welding is used extensively for welding of steel for different applications ranging from rails to automobile wheels in our country. Although this process is widely used for past six decades, there is still apprehension in adaptation of this process in certain critical applications for want of proper reliable N.D.T. method or proper quality assurance method. The present work addresses this problem of reliable N.D.T. method by suggesting the adaptation of computer based parameter monitoring system for checking every production joint. The first part of the work discusses the development of a P.C. based weld monitoring system. The second part of the work discusses the evaluation of the performance of the developed monitoring system in the actual production environment by welding economiser tube joints.- Evaluation of Dynamic Resistance as Quality Criterion for Resistance Spot Welding
Abstract Views :268 |
PDF Views:5
Authors
Affiliations
1 Welding Research Institute, BHEL, Tiruchirapalli, IN
1 Welding Research Institute, BHEL, Tiruchirapalli, IN
Source
Indian Welding Journal, Vol 30, No 1 (1997), Pagination: 24-31Abstract
Resistance spot welding is being used extensively in the automobile electrical and consumer goods industries in our country. With high quality coupled with low cost demanded by many industries, it is important to adapt resistance welding controllers for assuring quality of spot welded joints. The present paper examines the dynamic resistance behaviour during resistance spot welding of low carbon steel and austenitic stainless steel with a view to study the applicability of dynamic resistance based controllers Low carbon steel sheet of 1 mm and austenitic stainless steel sheet of 0.5 mm were used for spot welding trials and tensile shear test is used for evaluation of joint quality. Nugget diameter and indentation were again measured. The details of instrumentation system for dynamic resistance measurement and method of computation are being discussed. Dynamic resistance values are computed for every weld trial and parameters such as current pressure and time are varied to study its influence on be: i dynamic resistance as well as tensile shear strength. It was found that there is good correlation between tensile shear load, nugget diameter and indentation with the percentage drop in dynamic resistance. This work suggests that the percentage drop in dynamic resistance can be used as criteria for ensuring the quality of the spot welded steel joints.- Designing Factors of Distributed Database System: A Review
Abstract Views :179 |
PDF Views:1
Authors
Affiliations
1 Department of Computer Science, Institute of Technology, Ambo University, ET
1 Department of Computer Science, Institute of Technology, Ambo University, ET
Source
Data Mining and Knowledge Engineering, Vol 12, No 1 (2020), Pagination: 7-10Abstract
A distributed database is a database in which not all storage devices are attached to a common processor.[1] The storage devices are stored in multiple computers, situated in the identical physical locality or may be isolated over a network of interconnected computers. Contrasting parallel systems, in which the processors are tightly coupled and constitute a single database system, a distributed database system consists of loosely coupled locations that share no physical mechanisms. This paper addresses various challenges in designing a distributed database. This paper also addresses designing factors in distributed database like replication, duplication, architecture, fragmentation, security and database integrity across multiple database and review the previous work done recently.