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In vitro micropropagation of Musa sapientum L. (Cavendish Dwarf)
K Kalimuthu, M Saravanakumar, R Senthilkumar
African Journal of Biotechnology , 2007,
Abstract: A complete protocol for micropropagation of Musa sapientum using shoot meristems was developed. Multiple shoots were induced in vitro from shoot meristems. Murashige and Skoog’s medium supplemented with BAP and NAA (3.0 + 0.2 mg/l, respectively) was found to be most suitable combination. Further multiplication of shoots required habituation of cultures up to 3 passages of 21 days each on the same medium after establishment of culture and initiation of shoot buds. Thereafter 3- fold multiplication rate was achieved during every subculture. For rooting the shoots were excised and transferred to same medium. Rooted plantlets were then transferred to primary and secondary hardening and grown in the green house. These hardened plants have been successfully established in soil.
AN EMPIRICALANALYSIS OF TEA PRODUCTION AND PRICE IN SOUTH INDIA
M. SARAVANAKUMAR,A.V.CHINNASAMY
Review of Research , 2013,
Abstract: The ancient Chinese society first encountered the tea plants,the British introduced tea to India, in order to compete with the Chinese monopoly on tea. India is the world's largest tea drinking nation and the second largest producer of tea, Indian tea production during the year 2011 was 988.3 M.Kgs compared to 966.4 M.Kgs in 2010, an increase of 21.9 M.Kgs. In 2011, India contributes the share of 23.4 percent in the world tea production. Time Series Analysis is used to compute the tea production and price. The domestic tea production during 2010 was lower by 12.6 M.Kgs and was placed at 966.4 M.Kgs. The south India production was estimated at 243.4 M.Kgs and the price of the year was Rs. 76.69 per Kgs.
Unique Sense: Smart Computing Prototype
Vijaykumar S.,Saravanakumar S. G.,M. Balamurugan
Computer Science , 2015, DOI: 10.1016/j.procs.2015.04.056
Abstract: Unique sense: Smart computing prototype is a part of unique sense computing architecture, which delivers alternate solution for todays computing architecture. This computing is one step towards future generation needs, which brings extended support to the ubiquitous environment. This smart computing prototype is the light weight compact architecture which is designed to satisfy all the needs of this society. The proposed solution is based on the hybrid combination of cutting edge technologies and techniques from the various layers. In addition it achieves low cost architecture and eco-friendly to meet all the levels of peoples needs.
Metacognitive Orientation : A Theoretical Framework
M.Parimala Fathima,A.R.Saravanakumar
Indian Streams Research Journal , 2012,
Abstract: Teaching is a process by which the teacher and the students create an interactive environment, in such a way that the students become effective and productive learners. The productive learners can reflect on how they think and learn, set performance goals, select potentially appropriate learning methods and monitor their progress toward these goals. This paper focus on metacognitive orientation helping learners to develop metacognitive perspectives on enhancing students learning and personal responsibility
Extended release matrix tablets of Stavudine: Formulation and in vitro evaluation
Saravanakumar M,Venkateswaramurthy N,Dhachinamoorthi D,Perumal P
Asian Journal of Pharmaceutics , 2010,
Abstract: During the past two decades, there has been a steady increase in both the number of antiretroviral medications and the number of possible regimens available to manage human immunodeficiency virus (HIV) and acquired immune deficiency syndrome (AIDS). But still, regimen fails due to some reasons such as toxicity, adverse effects, and consequent difficulties with patient adherence. Stavudine is the Food and Drug Administration approved drug for clinical use for the treatment of HIV infection, AIDS, and AIDS related conditions, either alone or in combination with other antiviral agents. The side effects of Stavudine are dose dependent and a reduction of the total administered dose reduces the severity of the toxicity. To reduce the frequency of administration and to improve patient compliance, a once daily sustained release formulation of Stavudine is desirable. Hence, in the present work, an attempt has been made to develop once daily sustained release matrix tablets of Stavudine using putative hydrophilic matrix materials such as hydroxyl propyl methyl cellulose (HPMC) K4M and Carbopol 974P. The prepared extended release tablets were then evaluated for various physical tests like diameter, thickness, weight variation, hardness, friability, and drug content uniformity. The results of all these tests were found to be satisfactory. Formulation F9 extended the drug release till the end of 24 hours and showed higher r values for zero order plot, indicating that drug release followed zero order kinetics. This finding reveals that above a particular concentration, HPMC K4M and Carbopol 974P are capable of providing almost zero order drug release.
Hypolipidemic activity of Sesbania grandiflora in triton wr-1339 induced hyperlipidemic rats
A. Saravanakumar,S. Vanitha,M. Ganesh,J. Jayaprakash
International Journal of Phytomedicine , 2011,
Abstract: Hyperlipidemia is the greatest risk factor of coronary heart disease. Currently available hypolipidemic drugs have been associated with number of side effects. Herbal treatment for hyperlipidemia has no side effects and is relatively cheap and locally available. A literature claims that flavonoids can able to reduce the hyperlipidemia. Based on high flavonoid content in herbal, Sesbania grandiflora (SG) was selected and the present study focus on the anti-hyperlipidemic activity of aqueous extract of leaves of SG against triton induced hyperlipidemia in rats. SG administered a dose of 200μg/kg (p.o) to the triton induced hyperlipidemic rats. SG shows a significant decrease in the levels of serum cholesterol, phospholipid, triglyceride, LDL, VLDL and significant increase in the level of serum HDL at the dose of 200μg/kg (p.o) against Triton induced hyperlipidemic in rats. Aqueous extract of leaves of SG was investigated hypolipidemic activity on Triton induced hyperlipidemic profile. Aqueous extract fraction decreased serum level of total cholesterol by 69.72. On the other hand, aqueous extract of SG increased the serum HDL cholesterol level by 24.11. The reduction of LDL cholesterol level by aqueous extract was 30.31. Keywords: Sesbania grandiflora- Hyperlipidemia- LDL- VLDL- HDL
Analytical Solution of Nonlinear Boundary Value Problem for Fin Efficiency of Convective Straight Fins with Temperature-Dependent Thermal Conductivity
K. Saravanakumar,V. Ananthaswamy,M. Subha,L. Rajendran
ISRN Thermodynamics , 2013, DOI: 10.1155/2013/282481
Abstract: We have employed homotopy analysis method (HAM) to evaluate the approximate analytical solution of the nonlinear equation arising in the convective straight fins with temperature-dependent thermal conductivity problem. Solutions are presented for the dimensionless temperature distribution and fin efficiency of the nonlinear equation. The analytical results are compared with previous work and satisfactory agreement is noted. 1. Introduction The discipline of heat transfer, typically considered an aspect of mechanical engineering and chemical engineering, deals with specific applied methods by which thermal energy in a system is generated, or converted, or transferred to another system. Heat transfer includes the mechanisms of heat conduction, thermal radiation, and mass transfer. The analysis of extended surface heat transfer is extensively presented by Kraus et al. [1]. Arslanturk [2] used decomposition method to evaluate the temperature distribution and analytical expression for the fin efficiency. In the study of heat transfer, a fin is a surface that extends from an object to increase the rate of heat transfer to or from the environment by increasing convection. Incropera and Dewitt [3] presented a series of studies on the topic of heat transfer. Mokheimer [4] discussed a series of fin-efficiency curves for annular fins of rectangular, constant heat flow area, triangular, concave parabolic, and convex parabolic profiles for a wide range of radius ratios, and the dimensionless parameter based on the locally variable heat transfer coefficient. The optimum dimensions of circular fins with variable profile and temperature-dependent thermal conductivity have been obtained by Zubair et al. [5]. A new approach to calculate thermal performance of a singular fin with variable thermal properties has been presented by Kou et al. [6]. Joneidi et al. [7] studied an analytical solution of fin efficiency of convective straight fins with temperature-dependent thermal conductivity by the DTM. In this present paper, we first apply homotopy analysis method to obtain an approximation of analytical expression of fin efficiency of convective straight fins with temperature-dependent thermal conductivity. This problem is compared with Joneidi et al. [7]. 2. Mathematical Formulation of the Boundary Value Problem Consider a straight fin with a temperature-dependent thermal conductivity, arbitrary constant cross-sectional area ; perimeter and length ??(see Figure 1). The fin is attached to a base surface of temperature and extends into a fluid of temperature , and its tip is
The effect of light, temperature, ph on stability of anthocyanin pigments in Musa acuminata bract
J. Jenshi roobha,M. Saravanakumar,K. M. Aravindhan,P. Suganya devi
Research in Plant Biology , 2011,
Abstract: The anthocyanin pigment was extracted from Musa acuminata bract using theacidified methanol. The extracted anthocyanin pigments then were exposed to number ofenvironmental conditions, which could destabilize the anthocyanin molecules. Theseenvironmental conditions were included fourteen different pHs, various temperatures andpresence or absence of light. The temperature stability of the anthocyanin extract wascalculated by reaction velocity constants (k) as well as the half-life time (t1/2). The results ofthe study showed that increasing in pH, temperature or exposure to light is able to spoil theanthocyanin molecule. Copigmentation of anthocyanin resulting in increase in bothhypochromic effects and bathochromic shifts. Musa acuminata bract anthocyanin extractwas more stable at pH 5.1 and 6.0, temperature at 20° C and 30° C both in the presence andabsence of light. This characteristic differs from other anthocyanins. This property couldfacilitate its application as a natural food colorant.
In vitro evaluation of anticancer property of anthocyanin extract from Musa acuminate bract
Jenshi Roobha, J,M.Saravanakumar,K.M.Aravindhan,P. Suganya devi
Research in Pharmacy , 2011,
Abstract: Anthocyanins are potent anticarcinogenic properties against several cancers thusdemonstrating potential for cancer prevention. In the present study, we haveinvestigated the chemopreventive effects of anthocyanin extracted from Musa acuminatabract against human breast cancer cell line (MCF-7). Acidified methanolic extracts fromMusa acuminata bract has shown 12.24% inhibition at 1000μg/ml concentration againstMCF-7 cell line. Results indicated that anthocyanin from Musa acuminata bract extractshad strong antiproliferative activity against MCF-7 cell lines at varying concentration.These results encourage the bioactive constituents as chemopreventive agents for humanbreast cancer.
Abundance and Seasonal Variations of Zooplankton in the Arid Zone Mangroves of Gulf of Kachchh-Gujarat, Westcoast of India
A. Saravanakumar,M. Rajkumar,J. Sesh Serebiah,G.A. Thivakaran
Pakistan Journal of Biological Sciences , 2007,
Abstract: The zooplankton was assessed quantitatively and qualitatively in regard to their abundance in creek waters at three sites along the western mangrove of Kachchh, west coast of India, for a period of two years (1999-2000). Totally 69 forms of zooplankton were recorded currently from 3 stations. Of these, the copepods formed the dominant group. The population density in all the three sites varied from 30,000 to 210,000 organisms m-3. Surface water temperature varied from 17 to 37°C. Salinity varied from 34.0 to 44.0‰ and the pH ranged between 7.0 and 8.9. Variation in dissolved oxygen content was from 3.42 to 5.85 mg L-1. These semi arid zone mangrove creek area having high densities were recorded during winter season.
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