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PRELIMINARY PHYTOCHEMICAL SCREENING OF ROOT BARK OF DELONIX REGIA
Kavitha Sama,Xavier vergeese raja A
International Research Journal of Pharmacy , 2011,
Abstract: Medicinal plants have been of age long remedies for human diseases since they contain valuable components. In India, indigenous herbal remedies such as Ayurveda and other Indian traditional medicine have since ancient times used plants in treatment of various diseases. The present investigation was carried out to assess the qualitative phytochemical analysis of Delonix regia root bark was carried out by using various polarity solvents including hexane, butanol, methanol, and water. The methanol and water extracts indicates the presence of major bioactive compounds compare to other extracts. The Phytochemical screening of plant extracts revealed the presence of tannins, terpenoids, alkaloids, glycosides, carbohydrates and sterols. The results suggest that the phytochemical properties of the root bark can be used for curing various ailments.
PHARMACOGNOSTICAL AND PHYTOCHEMICAL SCREENING OF ASYSTASIA GANGETICA (CHINESE VIOLET)
Kavitha Sama,Rajeshwari Sivaraj,Hasna Abdul Salam,Rajiv. P
International Research Journal of Pharmacy , 2013,
Abstract: Medicinal plants are of great importance to the health of individuals and communities in general. Plants contain some chemical substances that produce definite physiological actions in and on the human body. The main aim of the present study was to evaluate the pharmacognostical properties and screen the bioactive constituents of Asystasia gangetica. Phytochemical screening of different extracts of the plant flower was carried out. The ethanol extract showed presence of maximum bioactive compounds including phenols, flavonoids, alkaloids, glycosides, tannins, terpenoids and saponins compared to other extracts. The yield and colour of the extracts varied with solvents and fluorescence analysis of powder was treated with various chemicals according to standard procedure. The results suggested that the plant flower possesses phytochemical constituents which are helpful to develop natural drugs to treat various diseases.
Description of three new species of longhorn beetles (Coleoptera, Cerambycidae) from Turkey and Syria
Gianfranco Sama
Biodiversity Journal , 2011,
Abstract: The following new taxa are described and illustrated: Chlorophorus grosseri n. sp. from Southern and EasternTurkey, close to C. adelii Holzschuh, 1974 from Western Iran; Chlorophorus oezdikmeni n. sp. from Turkeycompared to C. hungaricus Seidlitz, 1891 and Leiopus wrzecionkoi n. sp. from North-Eastern Syria, comparedto L. syriacus (Ganglbauer, 1884).
Determination of Optimum Film Thickness and Composition of Cu(InAl)Se2 Thin Films as anAbsorber for Solar Cell Applications  [PDF]
Balakrishnan Kavitha, Muthusamy Dhanam
World Journal of Nano Science and Engineering (WJNSE) , 2011, DOI: 10.4236/wjnse.2011.14017
Abstract: Cu(InAl)Se2 [CIAS] thin films have been prepared by chemical bath deposition [CBD] technique. X-ray diffraction [XRD] and Energy dispersive X-ray analysis [EDAX] spectra have been employed to confirm the structure and composition of the prepared films. The structural parameters have been estimated from XRD and EDAX spectra and their variation with film thickness and composition has been discussed in this paper in detail. From the discussion we enabled to find the optimum film thickness and composition of CIAS thin films for solar cell applications.
Forced Oscillation of Solutions of a Fractional Neutral Partial Functional Differential Equation  [PDF]
V. Sadhasivam, J. Kavitha
Applied Mathematics (AM) , 2015, DOI: 10.4236/am.2015.68124
Abstract: In this paper, we will establish the sufficient conditions for the oscillation of solutions of neutral time fractional partial differential equation of the form
\"\"
\"\"for where Ω??is a bounded domain in RN with a piecewise smooth boundary \"\"?is a constant, \"\" is the Riemann-Liouville fractional derivative of order a?of u with respect to t and \"\" is the Laplacian operator in the Euclidean N-space RN subject to the condition\"\"
Cultural Diversity in Conflict and Peace Making in Africa
M C Sama
African Journal on Conflict Resolution , 2007,
Abstract: Contrary to common belief that Cameroon is a haven of peace in a turbulent Central African sub region, this paper demonstrates that the absence of war in the country does not imply that it is peaceful. Given the linguistic and cultural diversity of the country with its more than 289 ethnic groups and a colonial legacy of French and English cultures and languages, plus remnants of a German sub-stratum, it should be clear that there are many potential ingredients for conflicts in Cameroon. The politicians seem to have nurtured these cultural and/or linguistic diversities in ways that fuel conflict and can even spark civil war. The tension that results from these ethnic and/or linguistic and religious splinters is not overt, however, due to the repressive nature of the regime in place. However, this tension continues to grow, to the detriment of the country's socio-economic development. There is therefore an acute need for measures to defuse such cultural conflicts which have the potential of sparking future civil strife in the country. African Journal on Conflict Resolution Vol. 7 (2) 2007: pp. 193-218
TCP Performance through Simulation and Testbed in Multi-Hop Mobile Ad hoc Network
Chandra Kanta Sama
International Journal of Computer Networks & Communications , 2010,
Abstract: When a packet is sent through wireless network it can be lost due to either environmental noise or due tocongestion in the network. Traditional TCP protocols do not perform well in the wireless network becausethey were designed for wired networks with the assumption that the transmission medium is quite reliable.This often results in TCP’s failure in distinguishing the cause of the packet loss as most of these problemshinder the throughput of the TCP connections in wireless networks. The work has been carried out to testthe window size, packet size and path length of Multi-Hop Ad hoc Network, the TCP performance in astraight line, multi hop ad-hoc networks in two ways: the first one network simulator ns-2 and second onepractical testbed, and the results that were obtained from both the models were compared and analyzed.
PENDEKATAN KOLABORATIF DALAM PENGELOLAAN DAERAH ALIRAN SUNGAI CITARUM
Sama€?un Jaja Raharja
Bumi Lestari , 2010,
Abstract: Untintegrated management and complicated factors lead to problem in Citarum watershed management. The main problems of the research are the management of Citaruma€ s watershed has been fragmented and conflict among stakeholders. There is need a new concept and approach for managing Citarum watershed so that management of Citarum Watershed more effective. The base proposition of research is Citarum watershed management requires a concept about cooperation among stakeholders than can settle the conflict among them as consequence of fragmented-sectoral management. Based on research analysis, this research formulated some finding. Citarum watershed management are independent, it caused the absence of an institution which functions as leader. Relationship among organizations is ill-structured, caused by overlapping role and function among them. The most appropriate collaboration model for Citarum Watershed management is interdependent model. Research recommendation to rearrangement core task and function of organization base in term collaborative governance.
Papillary Cystadenoma of Larynx: A Case Report  [PDF]
Tammam Abou Ali, Basel Al Sabah, Kavitha Gopalan, Kavitha Gopalan
International Journal of Otolaryngology and Head & Neck Surgery (IJOHNS) , 2013, DOI: 10.4236/ijohns.2013.26058
Abstract:

An uncommon clinical entity of papillary cystadenoma of the larynx in a lady of 37-year-old is presented. The diagnosis after clinical examination was achieved by video-stroboscopy, CT scan of the neck, biopsy and histopathological examination. This case study emphasizes the importance of recognition of this lesion by the clinician as the differential diagnosis includes lesions with similar clinical appearance.

 

Establishment and molecular characterization of human dermal mesenchymal-like stem cells derived from human scalp biopsy of androgenetic alopecia patient  [PDF]
Pravin Potdar, Kavitha S. Kumar
Stem Cell Discovery (SCD) , 2013, DOI: 10.4236/scd.2013.32012
Abstract:

Development of Dermal cell line has great scope in the field of skin related diseases and regenerative medicine. Alopecia leads to a skin disorder causing balding and its mechanism is not yet understood. In the present study, we have developed and characterized a heterogeneous population of human dermal mesenchymal-like stem cell line from scalp biopsy of androgenetic alopecia patient with a view to isolate cells from the bulge region of the hair follicle. Our study showed that the dermal cells isolated from dermis of skin showed epithelial-like cells expressing CD34 and Keratin 18, which are characteristic of bulge hair follicle cells. These cells also expressed mesenchymal phenotypes and pluripotency markers such as Oct4, Nanog and SOX2. These cells were designated as “Human Dermal Mesenchymal-like Stem Cells (hDMSCs)”. To confirm their epithelial phenotypes, we have grown these cells at low serum concentration and it was observed that 3% serum concentration provided optimum conditions for their growth and maintenance of characteristics. The hDMSCs cells are presently at passage 10. This study reports the establishment of human dermal mesenchymal-like cell line from the dermis of Alopecia patient, which may be used as an in vitro model system to study the mechanism of Alopecia and other related skin disorders.

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