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Balasubramanian, K.

• Regeneration Status in Natural Habitats of Nageia wallichiana (Presl.) O.Ktz, Goodrical Reserved Forest of Western Ghats of India

Abstract Views :344  |  PDF Views:1

Authors

E. S. Abhilash , A. R. R. Menon , K. Balasubramanian

Source

Indian Forester, Vol 131, No 2 (2005), Pagination: 183-200

Abstract

A study was conducted in natural habitats of Goodrical Reserved Forest to assess the abundance and diversity of seedling regeneration as a function of Forest Ecosystem. The most dominant species encountered was Palaquium ellipticum (Dalz.) Engl. Based on the distribution pattern except the saplings of study site-I, all categories and sites, Nageia wallichiana (Presl.)O.Ktz. showed contagious distribution but majority of the other species, we can see the preponderance of random distribution. In the case of Nageia wallichiana (Presl.) O.Ktz. a high mortality rate is seen especially from unestablished to established stage. In the study site-II it is noted that the increase in individual percentage of secondary species might have been due to past selection felling operations and has resulted decrease in the individual percentage of endemics and other conservational categories. The habitat is highly diverse in nature and harbours considerable number of endemics and other conservational categories like rare, endangered, vulnerable etc.

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• Biodiversity of Silent Valley National Park : a Phytogeographical Analysis

Abstract Views :242  |  PDF Views:1

Authors

S. Chand Basha , S. Sankar , K. Balasubramanian

Source

Indian Forester, Vol 118, No 5 (1992), Pagination: 361-366

Abstract

The Silent Valley National Park is the largest chunk of comparatively undisturbed area aboding tropical rain forest in the whole of Western Ghats. The flora of the area is fascinating from the phytogeographical point of view with Asiatic endemic, Indo-Sri Lankan elements dominating the scenario. These are followed by Pantropic, Australo-Aslan, Indo-African and other forms. From the point of view richness in Biodiversity, this Silent Valley stands out as an exceptional location harbouring highly diverse life forms.

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• Some Noteworthy Plants on the Pulneys and Nilgiris

Abstract Views :191  |  PDF Views:0

Authors

K. Balasubramanian

Source

Indian Forester, Vol 98, No 5 (1972), Pagination: 298-306

Abstract

This paper gives a short account of 34 flowering plants that appear to have not been reported so far either on the Pulneys or on the Nilgiris. Added to this, some phenological data that were collected during the visit to these hills, coupled with short foot-notes for some of the species are also furnished.

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• Characterization of Triglycine Sulfate (TGS) Crystals Grown in Water-soluble CdS Nanoparticles Dispersed in Water

Abstract Views :649  |  PDF Views:124

Authors

K. Balasubramanian ¹, P. Selvarajan ², E. Kumar ³

Affiliations
1 Department of Physics, The MDT Hindu College, Tirunelveli-627010, Tamilnadu, IN
2 Department of Physics, Aditanar College of Arts and Science, Tiruchendur-628216, Tamilnadu, IN
3 PRIST University, Thanjavur, Tamilnadu, IN

Source

Indian Journal of Science and Technology, Vol 3, No 1 (2010), Pagination: 41-43

Abstract

Single crystals of Triglycine Sulfate (TGS) were grown in water and also were grown in water-soluble CdS nanoparticles dispersed in water by solution method with slow evaporation technique at room temperature. Watersoluble CdS nanoparticles were synthesized by microwave-assisted solution method using the precursors such as cadmium sulfate, thioglycolic acid and ethylene diamine and they were used for the growth of CdS-added TGS crystals. The grown crystals were characterized by XRD technique, UV-visible spectral studies, measurement of density, microhardness studies, atomic absorptions studies. The effect of Cd²⁺ ions on various properties of TGS crystals have been analyszed and reported.

Keywords

Crystal Growth, XRD, TGS Crystals, CdS Nanoparticles

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References

• Ashok K. Batra, Mohan D. Aggarwal and Ravindra B. Lal (2003) Growth and characterization of doped DTGS crystals for infrared sensing devices. Materials Lett. 57, 3943-3948.
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• Barglik-Chory Ch., Buchold D, Schmitt M, Kiefer W, Heske C, Kumpf C, Fuchs O, Weinhardt L, Stahl A, Umbach E, Lentze M, Geurts J and Muller G (2003) Synthesis, structure and spectroscopic characterization of water-soluble CdS nanoparticles. Chemical Physics Lett. 379, 443–451.
• Berbacaru C, Alexandru HV, Pintilie L, Dutu A, Logofatu B and Radulescu RC (2005) Doped versus pure TGS crystals. Materials Sci. Engg. B11, 141-146.
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• Muralidharan R, Mohankumar R, Ushasree PM, Jayavel R and Ramasamy P (2002) Effect of rare-earth dopants on the growth and properties of triglycine sulphate crystals. J. Crystal Growth. 234, 545-550.
• Raghavan CM, Sankar R, Mohan Kumar R, Jayavel R (2008) Effect of amino acid doping on the growth and ferroelectric properties of triglycine sulphate single crystals. Materials Res. Bull. 43, 305–311.
• Selvarajan P, Siva dhas ATH, Freeda TH and Mahadevan CK (2008) Growth, XRD and dielectric properties of triglycine sulpho-phosphate (TGSP) crystals added with magnesiumsulfate. Physica B. 403, 4205–4208.
• Selvarajan P, Das BN, Gon HB and Rao KV (1992) Dielectric properties of quenched and X- ray irradiated triglycine sulphate single crystals later excited with laser light. J. Mat. Sci. Lett. 11, 1312-1314.
• Sun X, Wang M, Pan QW, Shi W and Fang CS (1999) Study on the growth and properties of quanidine doped triglycine sulfate crystal. Cryst. Res. Technol. 34, 1251-1254.
• Theresita Shanthi, Selvarajan P and Mahadevan CK (2009) Studies on triglycine sulfate (TGS) crystals doped with sodium bromide (NaBr) grown by solution method. Indian J. Sci. Technol.2(3), 49-52.

• Endocrine Disruptors

Abstract Views :238  |  PDF Views:81

Authors

M. Balasubramanyam ¹, M. Michael Aruldhas ², K. Balasubramanian ², J. Arunakaran ², B. Ravi Sankar ²

Affiliations
1 Madras Diabetes Research Foundation, No. 4, Conran Smith Road, Gopalapuram, Chennai 600 086, IN
2 Department of Endocrinology, Dr A.L.M. P.G Institute of Basic Medical Sciences, University of Madras, Chennai 600 113, IN

Source

Current Science, Vol 106, No 8 (2014), Pagination: 1052-1053

Abstract

No Abstract.

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• Effects of Quercetin on Basal and HCG-Stimulated Testosterone Production by Leydig Cells In vitro

Abstract Views :163  |  PDF Views:0

Authors

T. Malini ¹, S. Rengarajan ¹, N. S. Venkatesh ¹, K. Balasubramanian ¹, M. M. Aruldhas ¹

Affiliations
1 Department of Endocrinology, Dr. ALM Post Graduate Institute of Basic Medical Sciences, Taramani, Chennai 600113, IN

Source

Journal of Endocrinology and Reproduction, Vol 7, No 1&2 (2003), Pagination: 38-38

Abstract

Quercetin, a bioflavonoid is an inhibitor of phosphodiesterase and cAMP-independent protein kinases. The present study is attempted to delineate the effects of quercetin on basal and hCG-stimulated testosterone production by normal rat Leydig cell in vitro.

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• Effects of Experimental Diabetes and Insulin Replacement on Testicular Leydig Cells of Adult Rat

Abstract Views :183  |  PDF Views:0

Authors

S. Yuvaraj ¹, C. Parthasarathy ¹, N. Srinivasan ¹, P. Govindarajulu ¹, K. Balasubramanian ¹

Affiliations
1 Department of Endocrinology, Dr. ALM Post Graduate Institute of Basic Medical Sciences, University of Madras, Taramani Campus, Chennai 600 113, IN

Source

Journal of Endocrinology and Reproduction, Vol 7, No 1&2 (2003), Pagination: 44-45

Abstract

Clinical and experimental studies have shown the adverse effects of diabetes on testicular steroidogenesis and spermatogenesis. The present study was designed to assess the effects of streptozotocin (STZ)-diabetes on Leydig cell LH receptors and steroidogenic enzymes. Diabetes was induced by single intraperitoneal injection of STZ at a dose of 65 mg/kg body weight. Induction of diabetes was confirmed by plasma insulin and glucose estimations. One set of diabetic rats was treated with insulin (3U/100g body weight/day in two equally divided doses), 3 days after STZ treatment. Control and experimental animals were killed after twenty days.

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• Anticancer Activity of Quercetin on Prostate Cancer Cell Line In vitro

Abstract Views :186  |  PDF Views:0

Authors

M. R. Vijayababu ¹, P. Kanagaraj ¹, A. Arunkumar ¹, Siva Dhanammal ¹, K. Balasubramanian ¹, N. Srinivasan ¹, M. M. Aruldhas ¹, J. Arunakaran ¹

Affiliations
1 Department of Endocrinology, Dr. ALM Post Graduate Institute of Basic Medical Sciences, University of Madras, Taramani Campus, Chennai 600 113, IN

Source

Journal of Endocrinology and Reproduction, Vol 7, No 1&2 (2003), Pagination: 47-47

Abstract

Recent estimates have placed prostate cancer as the most commonly diagnosed malignancy. It is the fourth most common cancer in men worldwide. Androgen dependent prostate cancer can responds to androgen ablative therapy. However, if the cell contains heterogeneous population of both androgen dependent and androgen independent, the androgen ablative therapy can only responds to androgen dependent cell population but not to independent cancer.

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• Effects of Quercetin, Vitamin C and Vitamin E on Aroclorl254 Induced Oxidative Stress in Prostate of Adult Albino Rats

Abstract Views :182  |  PDF Views:0

Authors

M. Sridhar ¹, P. Venkataraman ¹, S. Dhanammal ¹, A. Arunkumar ¹, K. Balasubramanian ¹, M. M. Aruldhas ¹, J. Arunakaran ¹

Affiliations
1 Department of Endocrinology, Dr. ALM Post Graduate Institute of Basic Medical Sciences, University of Madras, Taramani Campus, Chennai 600 113, IN

Source

Journal of Endocrinology and Reproduction, Vol 7, No 1&2 (2003), Pagination: 48-49

Abstract

The present study was conducted to determine the effect of Aroclor 1254 (2 mg/kg bwt/day/IP) for 30 days, induced oxidative stress in prostate of adult albino rats. Additionally antioxidants such as Quercetin (2 mg/kg bwt/day/oral), Vitamin C (500 mg/kg bwt/day/oral) and Vitamin E (50 mg/kg bwt/ day/oral) were administrated to evaluate their therapeutic potency against Aroclor 1254 induced stress for 10 days.

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• Effect of Quercetin and Vitamins on Aroclor 1254 Induced Oxidative Stress in Rat Epididymis

Abstract Views :159  |  PDF Views:0

Authors

S. Dhanammal ¹, M. Sridhar ¹, P. Venkataraman ¹, M. R. Vijayababu ¹, K. Balasubramanian ¹, M. M. Arlildhas ¹, J. Arunakaran ¹

Affiliations
1 Department of Endocrinology, Dr. ALMPGIBMS, University of Madras, Taramani, Chennai-600 113, IN

Source

Journal of Endocrinology and Reproduction, Vol 7, No 1&2 (2003), Pagination: 52-53

Abstract

The present study was aimed to evaluate the effect of Aroclor 1254 (2mg/kg bwt/day/ip/30 days) induced oxidative stress in epididymis of adult albino rats. Antioxidants such as vitamin C (500mg/kg bwt/day/oral) were administered for 10 days to counter the effect of Aroclor 1254 induced oxidativestress.

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• Effects of Luteinizing Hormone and Insulin on the Regulation of Prolactin Receptors in Leydig Cells of Adult Rat

Abstract Views :164  |  PDF Views:0

Authors

P. Mary Julie ¹, T. Malini ¹, J. Arunakaran ¹, K. Balasubramanian ¹

Affiliations
1 Department of Endocrinology, Dr. ALM Post Graduate Institute of Basic Medical Sciences, University of Madras, Taramani Campus, Chennai-600 113, IN

Source

Journal of Endocrinology and Reproduction, Vol 7, No 1&2 (2003), Pagination: 53-54

Abstract

Effects of luteinizing hormone (LH), insulin and their combination on the regulation of prolactin (PRL) receptors on Leydig cells were studied. Leydig cells were isolated from adult male Wistar rats and measurement of PRL binding and internalization was done by incubating the cells with saturating concentration of ¹²⁵I-PRL in the presence or absence of different doses of unlabeled LH/ insulin. LH exposure caused biphasic pattern of changes in Leydig cells surface binding of ¹²⁵I-PRL was increased only by 100 and 200 ng doses of LH. Exposure of insulin at all doses registered no significant change in both cell surface bound and internalized PRL receptors. In normal cells, surface binding of ¹²⁵I-PRL was greater than the internalization at 34°C but at 4°C, surface binding remained lower than that at 34°C with negligible internalization.

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• Dose-Dependent Effects of Corticosterone on Leydig Cell LH Receptors and Steroidogenesis In vitro

Abstract Views :223  |  PDF Views:0

Authors

S. Rengarajan ¹, R. Sivakumar ¹, N. Srinivasan ¹, P. Govindarajulu ¹, K. Balasubramanian ¹

Affiliations
1 Department of Endocrinology, Dr. ALM Post Graduate Institute of Basic Medical Sciences, University of Madras, Taramani Campus, Chennai-600 113, IN

Source

Journal of Endocrinology and Reproduction, Vol 7, No 1&2 (2003), Pagination: 54-55

Abstract

Glucocorticoid excess due to stress, endocrine disorders or therapeutic application has been recognized to have an adverse efTect on androgenic status of men. Our previous studies emphasized the defective LH signal transduction in Leydig cells exposed to corticosterone. The present study was designed to identify the dose-dependent effects of corticosterone on the regulation of Leydig cell surface LH receptors and steroidogenic potency in vitro.

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• Dose Dependent Effects of Gamma Radiation on LH and cAMP Stimulated Steroidogenesis in Cultured Human Leydig Cells

Abstract Views :202  |  PDF Views:0

Authors

R. Sivakumar ¹, J. Arunakaran ¹, N. Srinivasan ¹, P. Govindarajulu ¹, K. Balasubramanian ¹

Affiliations
1 Department of Endocrinology, Dr. ALM Post Graduate Institute of Basic Medical Sciences, University of Madras, Taramani Campus, Chennai-600 113, IN

Source

Journal of Endocrinology and Reproduction, Vol 7, No 1&2 (2003), Pagination: 55-55

Abstract

Therapeutic or experimental radiation exposure is known to impair testicular Leydig cell function. However, the molecular mechanisms that underlie such effects are largely unknown. Our previous study demonstrated that higher doses of gamma radiation impair basal and LH-stimulated cAMP production. The present study deals with the dose dependent effects of gamma radiation on LH and cAMP stimulated steroidogenesis in human Leydig cells. Testicles removed from advanced prostatic carcinoma patients, who do not have any endocrine or metabolic disorders known to affect the testicular functions were used in the present study. Prior to orchidectomy, serum hormones such as FSH, LH, testosterone and estradiol were assayed to evaluate the testicular functions.

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• Streptozotocin-Diabetes Impairs the Differentiation of Epididymis during Sexual Maturation

Abstract Views :163  |  PDF Views:0

Authors

S. Singh ¹, S. Yuvaraj ¹, R. Sivakumar ¹, C. Parthasarathy ¹, T. Malini ¹, K. Balasubramanian ¹

Affiliations
1 Department of Endocrinology, Dr. ALM Post Graduate Institute of Basic Medical Sciences, University of Madras, Taramani Campus, Chennai-600 113, IN

Source

Journal of Endocrinology and Reproduction, Vol 7, No 1&2 (2003), Pagination: 72-73

Abstract

Male reproductive dysfunction is a common feature in diabetic boys and men. Defective spermatogenesis, sperm count, sperm motility, seminal fluid volume and serum testosterone, supports endocrine basis for impotence and fertility disorders. The present investigation was carried out to understand the impact of diabetes on the structure and development of epididymis during the critical period of sexual maturation in rats. Prepubertal (40 days old) and adult (120 days old) male Wistar rats were made diabetic by single injection of streptozotocin (120 mg/kg body weight for prepubertal and 65 mg/kg body weight for adult) intraperitoneally.

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• Effect of Polychlorinated Biphenyl (Aroclor 1254) on Rat Leydig Cellular Antioxidant System

Abstract Views :182  |  PDF Views:0

Authors

P. Murugesan ¹, J. Senthilkumar ¹, K. Balasubramanian ¹, M. M. Aruldhas ¹, P. Govindarajulu ¹, J. Arunakaran ¹

Affiliations
1 Department of Endocrinology, Dr. ALM PG Institute of Basic Medical Sciences, University of Madras, Taramani, Chennai-600 113, IN

Source

Journal of Endocrinology and Reproduction, Vol 7, No 1&2 (2003), Pagination: 91-92

Abstract

To find out the effect of polychlorinated biphenyl compound Aroclor 1254 on rat Leydig cellular antioxiSant system, adult male rats were exposed to Aroclor 1254 (2 mg/kg b.wt.) mixed with com oil through intraperitoneal (ip) injection daily for 30 days. The control rats were administered com oil as vehicle. Testes were removed on the both groups and Leydig cells were isolated by enzymatic digestion and purified on discontinous percoll gradient.

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• Serum Dihydrotestosterone is a Major Determinant of Bone Mineral Density in Men

Abstract Views :234  |  PDF Views:0

Authors

R. llangovan ¹, M. Balaganesh ¹, S. Sittadjody ¹, R. Sivakumar ¹, M. Sridhar ¹, R. C. Vignesh ¹, B. Ravi Sankar ¹, J. Arunakaran ¹, K. Balasubramanian ¹, M. Michael Aruldhas ¹, N. Srinivasan ¹

Affiliations
1 Department of Endocrinology, Dr. ALM PG Institute of Basic Medical Sciences, University of Madras, Taramani, Chennai - 600 113, IN

Source

Journal of Endocrinology and Reproduction, Vol 10, No 1 (2006), Pagination: 56-58

Abstract

In the present investigation, 100 osteoporotic men with 100 age-matched normal were studied for serum sex steroids, parathyroid hormone (PTH), thyroid hormone (T₃), cytokines and bone turnover markers. Serum dihydrotestosterone (DHT) was significantly decreased in osteoporotic men compared with normal. In osteoporotic men, there was a significant increase in serum interleukin (IL)-lalpha. A marked increase in bone formation marker, serum osteocalcin (OCN) and bone resorption marker, serum tartrate-resistant acid phosphatase (TRAP) reflects high bone turnover in osteoporotic men. In conclusion, the present findings point out an important role of DHT in maintaining BMD in men. A strong positive correlation of serum DHT with BMD offers new perspectives in understanding the role of non-aromatizable androgen in the regulation of bone metabolism in men.

Keywords

BMD, Cytokines, DHT.

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• Effects of Streptozotocin-Diabetes and Insulin Replacement on Androgen and Estrogen Receptor Concentrations in the Epididymis of Wistar Rats

Abstract Views :203  |  PDF Views:0

Authors

S. Soudamani ¹, S. Yuvaraj ¹, S. Rengarajan ¹, R. Sivakumar ¹, T. Malini ¹, K. Balasubramanian ¹

Affiliations
1 Department of Endocrinology, Dr. ALM Post-Graduate Institute of Basic Medical Sciences, University of Madras, Taramani, Chennai 600 113, IN

Source

Journal of Endocrinology and Reproduction, Vol 10, No 1 (2006), Pagination: 59-61

Abstract

The present study was aimed at evaluating the effects of streptozotocin (STZ)-induced diabetes and insulin replacement on the androgen (AR) and estrogen receptor (ER) concentrations in the caput, corpus and cauda epididymides of prepubertal and adult Wistar rats. Prepubertal (40 days old) and adult (120 days old) male Wistar rats were made diabetic by single intraperitoneal (i.p.) injection of STZ (120 mg/kg and 60 mg/kg body weight, respectively). To one set of diabetic rats, insulin was administered daily at a dose of 3 U/100 g body weight, subcutaneously, in two equally divided doses at 8.00 AM and 6.00 PM. All the rats were killed on the 21st day of commencement of experimentation. The epididymis was dissected out and caput, corpus and cauda segments were separated, freed from spermatozoa and processed for AR and ER quantification. STZ-induced diabetes caused a marked decrease in both nuclear and cytosolic AR and ER concentrations in the caput, corpus and cauda epididymides. Insulin replacement circumvented the adverse effects of diabetes in a segment-specific manner. These findmgs emphasize the detrimental effects of diabetes and the importance of insulin in the maintenance of epididymal AR and ER concentrations in immature as well as adult rats.

Keywords

Androgen Receptor, Diabetes, Epididymis, Estrogen Receptor, Insulin.

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• Detecting and Isolating Malicious Packet Losses

Abstract Views :171  |  PDF Views:2

Authors

K. Balasubramanian ¹, R. Anandraj ²

Affiliations
1 Department of CSE, EGSPEC, Nagapattianam, IN
2 Department of EEE, EGSPEC, Nagapattianam, IN

Source

Networking and Communication Engineering, Vol 4, No 1 (2012), Pagination: 1-3

Abstract

Consider the problem of detecting whether a compromised router is maliciously manipulating its stream of packets. The concerned with a simple yet effective attack in which a router selectively drops packets destined for some victim. Modern networks routinely drop packets when the load temporarily exceeds their buffering capacities. Previous detection protocols have tried to address this problem with a user-defined threshold: too many dropped packets imply malicious intent. This heuristic is fundamentally unsound; setting this threshold is, at best, an art and will certainly create unnecessary false positives or mask highly focused attacks. They have designed, developed, and implemented a compromised router detection protocol that dynamically infers, based on measured traffic rates and buffer sizes, the number of congestive packet losses that will occur. Once the ambiguity from congestion is removed, subsequent packet losses can be attributed to malicious actions

Keywords

Internet Dependability, Intrusion Detection and Tolerance, Distributed Systems, Reliable Networks, Malicious Routers.

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• Determination of Reinfarction Probabilities in Certain Heart Ailments by Using HRV as A Tool–An Investigatory Study

Abstract Views :214  |  PDF Views:3

Authors

B. Suresh Chander Kapali ¹, S. Muttan ², K. Balasubramanian ³

Affiliations
1 Department of Biomedical Engineering, Vel Tech Multi Tech Dr.Rangarajan Dr. Sankunthala Engineering College, Chennai, Tamil Nadu, IN
2 Department of Electronics and Communication Engineering, College Of Engineering, Guindy, Chennai, Tamil Nadu, IN
3 Department of Physiology, Stanley Medical College, Chennai, Tamil Nadu, IN

Source

Artificial Intelligent Systems and Machine Learning, Vol 3, No 13 (2011), Pagination: 820-825

Abstract

Myocardial Reinfarction means a subsequent heart attack after a Myocardial infarction. Myocardial infarction commonly known as heart attack, occurs when the blood supply to a part of the heart is interrupted causing some myocardial cells to die. This is most commonly due to occlusion (blockage) of a branch of coronary artery, which is due to deposition of lipids (like cholesterol) in the intimal layer of the coronary blood vessels The aim of this project is to record the ECG sequentially from Lead–II electrocardiogram (ECG). Then recorded ECG is analyzed using heart rate variability software. So the objective of my project is to find the flexibility of the heart and to confirm whether the patient may or may not suffer from subsequent attack (Reinfarction) in conditions like hypertensive Cardiomyopathy, alcoholic cardiomyopathy, diabetes induced Cardiomyopathy and Valvular Heart Diseases. The parameters monitored are analog signals in nature. They are amplified, filtered, and converted into a digital format for further processing by microcontroller or embedded unit. Then with the help of the software further analysis is done.

Keywords

Heart Rate Variability (HRV), Coronary Artery, Cardiomyopathy, Reinfarction, Autonomic Nervous System (ANS).

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• Emergence of Fertility Differentials as Evidence of Fertility Decline in India

Abstract Views :458  |  PDF Views:0

Authors

K. Balasubramanian

Source

Artha Vijnana: Journal of The Gokhale Institute of Politics and Economics, Vol 34, No 2 (1992), Pagination: 182-199

Abstract

A review of major studies on fertility concludes that it is only from the late 1960s that movement from the stage of uncontrolled fertility to the stage of uncontrolled fertility leading to the emergence of socio-economic differentials in fertility seems to have really gotten underway in India. This process appears to have been accelerated during the 1970s and 1980s. This indicates that the onset of fertility decline has began in India and the transition towards a regime of increasingly controlled fertility has been occuring at different rates among different socio-economic groups. These findings have important implications for population policies and programmes.

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• The Performance of Non-Governmental Organizations in Family Planning and MCH in Maharashtra State

Abstract Views :472  |  PDF Views:0

Authors

Sanjeevanee Mulay , K. Balasubramanian

Source

Artha Vijnana: Journal of The Gokhale Institute of Politics and Economics, Vol 34, No 2 (1992), Pagination: 209-232

Abstract

This paper presents the findings of an evaluation study of three projects on family planning and health undertaken by three non-governmental Organisations (NGOs) in Maharashtra State, namely the National Integrated Medical Association at Malegaon in Nashik district, the Centre of Matru Mandir at Oni in Ratnagiri district and the Yusuf Meherally Centre at Tara in Raigad district. The study identifies various factors which determine the performance of a particular NGO and highlights how voluntary organizations, in general, can play a useful role for the promotion of family welfare and maternal and child health programmes in India.

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• Hindu-Muslim Differentials in Fertility and Population Growth in India: Role of Proximate Variables

Abstract Views :741  |  PDF Views:1

Authors

K. Balasubramanian

Source

Artha Vijnana: Journal of The Gokhale Institute of Politics and Economics, Vol 26, No 3 (1984), Pagination: 189-216

Abstract

Religious affiliation has been found to have a significant bearing on fertility in the study of differential fertility by various background variables. First, religion per se has considerable social relevance to fertility. According to Westoff (1959, p. 117), "The religious affiliation of the couple connotes a system of values which can affect family via several routes: (a) directly, by imposing sanctions on the practice of birth control of legitimizing the practice of less effective methods only, or; (b) indirectly, by indoctrinating its members with a moral and social philosophy of marriage and family which emphasises the virtues of reproduction".

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• Population Projections for Aurangabad Municipal Corporation, 1981-2001

Abstract Views :323  |  PDF Views:1

Authors

K. Balasubramanian

Source

Artha Vijnana: Journal of The Gokhale Institute of Politics and Economics, Vol 30, No 1 (1988), Pagination: 55-74

Abstract

The Aurangabad Municipal Corporation was established in December 1982 under the Bombay Provincial Municipal Corporation Act, 1949. Thirteen villages situated in the outskirts of Aurangabad city have been added to the city area in demarcating the boundaries of the newly established Corporation with an enlarged land area of 145 square kilometers.

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• Demographic Evolution of India's Family Planning Programme

Abstract Views :490  |  PDF Views:0

Authors

K. S. Srikantan , K. Balasubramanian

Source

Artha Vijnana: Journal of The Gokhale Institute of Politics and Economics, Vol 25, No 3 (1983), Pagination: 205-230

Abstract

India has the unique distinction of having been the first country to introduce an official programme for family planning in 1951 as an integral part of its socio-economic development plan. Since then the programme has grown steadily and today it is perhaps the second largest programme in the world, covering a huge population of about 70 crores. During its evolution, various strategies were developed for extending the reach and improving the performance of the programme.

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• Life Table for Ceylon 1963

Abstract Views :311  |  PDF Views:1

Authors

K. Balasubramanian , L. B. Kahawatte , R. N. Sharma

Source

Artha Vijnana: Journal of The Gokhale Institute of Politics and Economics, Vol 13, No 1 (1971), Pagination: 109-118

Abstract

The study of mortality - its level and trend - is very important from more points than one. Mortality being an important component of population change, any study on it is of use to the demographer, planner and others. Study of mortality is also of vital importance to the public health, authorities and health planners, especially if mortality statistics are available by several characteristics such as age, sex and cause of death.

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• New Algorithm to Address Confounding Problems in Taguchi Parameter Design – A Practical Study

Abstract Views :161  |  PDF Views:0

Authors

S. Rajarasalnath ¹, K. Balasubramanian ²

Affiliations
1 Dr. M.G.R. Educational and Research Institute University, Chennai - 600095, Tamil Nadu, IN
2 Kalasalingam Academy of Research and Education, Krishnankoil - 626126, Tamil Nadu, IN

Source

Indian Journal of Science and Technology, Vol 8, No 35 (2015), Pagination: 

Abstract

It is essential to operate all manufacturing processes at optimum levels to stay competitive in the global environment. Optimum prediction in manufacturing process involves lot of experimentation as it involves time and cost. Taguchi Parameter Design (PDE) is a design where optimum prediction is achieved in lesser experimental runs subject to the condition that there is no confounding effect. Confounding effect is a drawback of Taguchi PDE due to which many Taguchi experiments fail in confirmation tests at desired confidence level. RABAL Algorithm is 12 step structured approach, which uses Orthogonality concept and linear graph for Factors and Interaction allocation and uses certain rules based on statistical concepts by which the accurate result of Taguhi parameter design experiment is ensured. Sleeve synchronizer 1&2 hard turning is a bottleneck operation in a gear manufacturing line taken for research optimized for better cycle time using Taguchi PDE and RABAL algorithm. Feed rate in first and second cut is observed as significant factors at 95% confidence level and Optimal parametric setting is identified. Accuracy of results is confirmed through confirmation tests. RABAL Algorithm can be used along with Taguchi PDE to minimize the confounding effects there by accuracy of experimental results are improved and results are achieved right first time.

Keywords

Confounding Effect, Hard Turning, RABAL Algorithm, Sleeve Synchronizer 1&2, Taguchi Parameter Design

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• Analysis of Crown Shrinkage in Gravity Die Cast Aluminium Alloy LM 13 Piston

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Authors

P. Kannan ¹, K. Balasubramanian ²

Affiliations
1 Department of Mechanical Engineering, Dr. M. G. R. Educational and Research Institute University, Chennai - 600095, Tamil Nadu, IN
2 Department of Mechanical Engineering, Kalasalingam Academy of Research and Education, Krishnankoil - 626126, Tamil Nadu, IN

Source

Indian Journal of Science and Technology, Vol 8, No 35 (2015), Pagination: 

Abstract

Background/Objectives: Optimization of process parameters to obtain shrinkage free engine piston based on Al-Si casting alloy LM 13 fabricated by gravity die casting. Method/Statistical Analysis: Experimental analysis of design and process parameters like riser sleeve size, center core temperature, pouring metal temperature and solidification time was carried out on Al-Si casting alloy LM 13 based engine piston fabricated by die casting technique. The die casting experiments with different solidification time 90, 120 and 150 seconds and volume of molten metal consumed by different sleeve size were carried out to obtain optimum conditions to produce shrinkage free engine pistons. The die casted engine piston were sectioned and checked for shrinkage at different design and process parameters. Results/Findings: The results showed that there is an effect of centre core temperature towards the shifting of shrinkage from the crown to riser. The center core temperature should not be maintained below 200°C and should be in the range of 200 - 238°C. But it cannot be concluded that the crown shrinkage is only due to the centre core temperature. The molten metal Al-Si is less dense as a liquid than as a solid so castings shrink upon cooling, which can leave a void at the last point to solidify. Risers prevent this by providing molten Al-Si alloy to the casting as it solidifies, so that the shrinkage forms in the riser and not the in engine piston casting. It was found that the size of sleeve size is indirectly proportional to the occurrence of crown shrinkage and increase in size of sleeve size reduces the chances of shrinkage. Engine piston section results showed the shrinkage shifting from casting to riser side by increasing the sleeve size. However the effect of different solidification time and pouring metal temperature was not so significant on the occurrence of shrinkage. Applications/Improvements: The optimized center core pin temperature and riser sleeve size successfully prevented the shrinkage formation in the Al-Si casting alloy LM 13 engine piston casting. This not only helps in improving the casting quality but also in increasing the production.

Keywords

Al-Si Alloy, Engine Pistons, Gravity Die Casting, Shrinkage, Solidification Time

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• Application of Heuristics for Parallel Flow Line Scheduling Problem

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Authors

S. Rajendran ¹, K. Balasubramanian ²

Affiliations
1 Dr. M. G. R. Educational and Research Institute, University, Chennai - 600107, Tamil Nadu, IN
2 Department of Mechanical Engineering, Kalasalingam Academy of Research and Education, Krishnankoil - 626126, Tamil Nadu, IN

Source

Indian Journal of Science and Technology, Vol 9, No 4 (2016), Pagination: 

Abstract

The flowshop scheduling problems are solved by heuristic methods in view of the NP-hardness. This paper proposes to explore the near optimal sequences based on heuristic algorithms with the objective to minimize Makespan. Metaheuristic based methods are used in scheduling problems where exact methods are not sufficient to provide a solution. Swarm intelligence systems are generally made up of a population of naturally existing phenomena or agents and in this paper the consideration is the foraging behavior of honey bees. Such swarm based algorithms are used to duplicate the methods of nature to conduct a search towards the near optimal solution. This paper presents an application of parallel flow line scheduling using metaheuristic method of swarm intelligence based on bee colony algorithm. The algorithm used is to minimize the Makespan, which is one of the important requirements to reduce the overall lead time in manufacturing. The results of this algorithm has been compared with the results of other comparable research algorithms and verified. Computational results show that GA based algorithm outperforms ABC in all instances of the chosen problem sets. In order to measure the efficiency of the solution methods, the execution time (sec) taken by each solution method to obtain solution to an instance of a problem was computed. The mean value of execution time over the hundred problem instances solved under various metaheuristics shows that for the small size problems the computation time is same for all the three algorithms and when the problem size increases the computation time of algorithms also increases and vary exponentially and from the experiments it is inferred that the GA algorithm is faster than ABC. The application of this algorithm discussed can be applied over a number of applications related to manufacturing in parallel assembly lines like packaging industry, manufacturing industry like paper industry, plastics injection molding industry etc.

Keywords

Bee Colony, Heuristics, Parallel Flow-Line, Scheduling

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• Experimental and Theoretical Evaluation of Hot Cracking in the Super Austenitic Stainless Steel Weld Metal during Autogeneous Welding

Abstract Views :161  |  PDF Views:0

Authors

K. Balasubramanian ¹, V. Balusamy ²

Affiliations
1 Dept of Mechatronics Engg, Sri Krishna College of Engg and Technology, Coimbatore, IN
2 Dept of Metallurgical Engg, PSG College of Technology, Coimbatore, IN

Source

Manufacturing Technology Today, Vol 10, No 8 (2011), Pagination: 13-17

Abstract

The main idea of this work is to compare the dependability of the theoretical and experimental evaluation of the hot cracking susceptibility of super austenitic stainless steel weld metal. In this juncture, the hot cracking susceptibility of super austenitic stainless steel weld metal is explained through a theoretical procedure and an experimental procedure. In a theoretical evaluation, the hot cracking susceptibility of a given super austenitic stainless steel is explained in terms of Cr_eq/Ni_eq, level of impurities (S+P%), ferrite number FN and microstructure. Another way to measure the hot cracking susceptibility of super austenitic stainless steel is through experimental tests by means of Houldcroft hot cracking test. The results of the theoretical analysis agreed with results achieved from the Houldcroft test. Therefore, the outcome obtained by theoretical assessment and experimental assessment indicate that the experimental and theoretical evaluation are consistent with one another and are both dependable.

Keywords

Welding, Houldcroft Test, Super Austenitic Stainless Steel Weld Metal, Hot Cracking.

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• A Case Study of Welding Related Failures and Repair of the Reactor of Warm Argon Unit in Air Separation Plant-VSP

Abstract Views :369  |  PDF Views:5

Authors

K. Balasubramanian ¹, M. Ravi ²

Affiliations
1 Visakhapatnam Steel Plant, IN
2 Visakhapatnam Steel Plant

Source

Indian Welding Journal, Vol 40, No 3 (2007), Pagination: 17-20

Abstract

Tonnage oxygen plants basically produce oxygen by the cryogenic liquefaction process. Besides oxygen, nitrogen and argon are also separated from the air in this method of oxygen making The basic process involves liquefying the air at cryogenic temperatures and separating it into its constituent components by fractional distillation one of the by products of these oxygen plants is argon.

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