Science: Recent submissions

Now showing items 321-340 of 846

Standardization of herbal preparations: Scientific approach for conventional herbal medicine.

Jayasinghe, C D; Udagama, PV (Link Natural Digest, vol 10(1);, 2014)

Herbal medicine is still the mainstay of about 80% of the world population for their primary healthcare. Plant based medicines are accepted as therapeutic agents for many diseases such as diabetes, arthritis, liver ...
Predators of Sri Lankan Bats. Loris

Digana, PMCB; Yapa, WB; Randeniya, PV; Ratnasooriya, WD (Ecology and Biology of Sri Lankan Bats, 1999)

Although bats represent the largest order of mammals in terms of the number of species, they are one of the least studied in Sri Lanka. The Department of Zoology of the University of Colombo undertook pioneering investigations ...
An innovation in Career Guidance in Higher education: Effectiveness and Sustainability of Institutionalization of Service Learning in the University of Colombo

Udagama, P; Wijayanama, C; Vithanapathirana, M (2019 From Innovation to Impact (FITI), Colombo, Sri Lanka, 2020)

Service learning, a structured learning experience, blends voluntary community service with academic learning. This paper reports the innovation which fostered reflection and assessment leading to deeper understanding of ...
Immunostimulatory activity of Sri Lankan wild type Carica papaya L. mature leaf concentrate in a rat model.

Jayawardhane, N D C K K; Jayasinghe, C D; Vivehananthan, K; Udagama, P V (Proceedings of the 13th Agricultural Research Symposium, Faculty of Agriculture and Plantation Management, Wayamba University of Sri Lanka., 2014)

Modulation of the immune system by plant based immunomodualtors is well accepted. The present study evaluated the immunomodulatory activity of the mature leaf concentrate (MLC) of Carica papaya Sri Lankan wild type variant, ...
Heavy metal pollution and burden of aquatic animal health: A pilot study from an urban wetland in Sri Lanka.

Priyadarshani, S; Madushani, W A N; Wickremasinghe, DD; Udagama, P V (First Young Water Professionals Symposium, Sri Lanka Jalani& International Water Management Institute, Colombo., 2013)

Contamination of aquatic environments due to anthropogenic activities is increasingly evident globally. Heavy metals which are exposed to the environment through industrial and domestic wastes and effluents are serious ...
Roost selection of the short-nosedfruit bat, Cynopterusspp. in Sri Lanka

Digana, P.M.C.Bandara; Yapa, Wipula B; Randeniya, Preethi V; Ratnasooriya, W.D (Journal of Science of the University of Kelaniya, Sri Lanka, 2003)

A total of 160 days of short nosed fruit bats (Cynopterus sp) were examined during a 3 years study in Sri Lanka. Day roosts were found in five species of trees; Talipot palm (Corypha umbraculifera), coconut (Cocos nucifera), ...
Macrophage migration inhibitory factor (MIF) in seminal ﬂuid as a marker of male factor infertility: a pilot study in Sri Lankan men

Obeysekera, Maheshi P.; Amarasekara, Dulshara S.; Wijerathna, Sumedha; Fernando, Chandrika; Udagama, Preethi V. (Journal of National Science foundation Sri Lanka, 2014)

Recent clinical and epidemiological studies worldwide suggest an increasing incidence of male factor infertility (MFI). Paucity of information on the biochemical analysis of seminal ﬂuid in Sri Lanka prompted undertaking ...
Immunoepidemiology of Plasmodium vivax Merozoite Surface Protein-4 (PVMSP-4) in Sri Lanka: A Preliminary Study

Dissanayake, Upadari; Dias, Sajani; Polson, Hannah; Longacre, Shirley; Udagama-Randeniya, Preethi V (Ceylon Journal of Science (Bio Science), 2008)

Natural antibody (IgG + IgM) responses to putative vaccine candidate, Plasmodium vivax Merozoite Surface Protein-4, in acute vivax malaria patients in endemic and non-endemic areas of Sri Lanka, were assayed by indirect ...
An investigation of in vivo antimalarial activity of black tea brew of Camelliu sinensis L. O. Kuntze in mice

Ratnasooriva, W D; Javasinghc, C D; Udagama - Randcnir, P V (2007)

Several traditional medicines and folklore beliefs exist that black tea brew (BTB) from Camellia sinensis L. O. Kuntze: (Theaceae) possesses antimalarial activity. This study scientifically investigated the antimalarial ...
Haematological parameters of three species of wild caught microchiropteran bats, Miniopteruschreibersii,Taphozousmelanopogon and Hipposideroslankadivain Sri Lanka

Ratnasooriya, W D; Udagama-Randeniya, P V; Yapa, W B; Digana, P M C B; Dharmasiri, M G (2005)

This study, for the first time in South Asia, examines hematological parameters of three different families having different global zoogeographical distributions; Miniopterus schreibersii (Vespertillionidae; n=12), Taphozous ...
A double antibody sandwich ELISA for the diagnosis of vivax malaria: a tool for further researc

Seneviratna, G. D. C. N.; Manamperi, A. A. P. S.; Kapilananda, G. M. G.; Longacre, S.; Handunnetti, S. M.; Udagama-Randeniyal, P. V. (The Ceylon Journal of Medical Science, 2000)

A diagnostic assay for Plasmodium ohtaxbased on a double antibody sandwich enzyme-linked immunosorbent assay (DAS ELISA) was established to detect the merozoite surface protein L (PvMSPl) in wild isolates. This assay was ...
Food preferences (three fruit types) of sri Lankan short-nosed fruit trat Cynopterus sphinx (Chiroptera) in a semi-natural condition

Yapa, W.B.;; Kumarasinghe, J; Digana, P.M.C.B; Randeniya, P.V; Ratnasooriya, W.D (Vidyodaya Journal of Science, 1999)

In this study the food preference of sri Lankan shoft nosed fruit bat cynopterus sphinr rvas tested in a seminatural condition as a first step of a long term study of diet and foraging of sri Lankan fruit bats. Investigations ...
Ecology of ecto-parasites of some cave-dwelling microchiropterans of Sri Lanka"

Weerakkody, A.S.A; Randeniya, P.V.; Ratnasooriya, W.D. (1999)

The population and community characteristics of ecto-parasites of bats in Sri Lanka have not been previously examined. The aim of the present study was to investigate these attributes based on incidence, density, prevalence ...
Presence of Trypanosoma lewisi in Rattus norvegicus in Sri Lanka

Sannasuriya, A; Premawansa, S; Dharmasiri, MG; Randeniya, P V; Ratnasooriya, W D (Ceylon Journal of Science, 1999)

Natural infection of the haemoflagellate, Trypanosoma lewisi, in a laboratory colony of mixed bred rats, Rattus norvegicus, is reported for the first time in Sri Lanka. Some aspects of parasitology and immunology on this ...
Coniferyl alcohol oxidase, anew enzyme of lignification

Savidge, R A; Udagama-Randeniya, P V; Yijun, Xu; Leinhos, V; Forster, H (“Lingnin and Lignan Biosynthesis”, in ACS Symposium Series Volume 697, Lewis, N. G. and Sarkanen, S (eds), American Chemical Society, 109-130., 1998)

Coniferyl alcohol oxidase (CAO), a catechol oxidase (o-diphenol:oxygen oxidoreductase, E.C.1.10.3.1) specifically associated with lignification during wood formation in conifers, is described and its activity is compared ...
A Herbal Distillate from Ficus Benghalensis Plant parts, its Preparation Method and Uses Thereof, Sri Lanka

Udagama, PV; Udalamaththa, V; Samaratunge, U; Jayasinghe, L; Wijeratne, S (A herbal distillate to alter proliferation of stem cells using Ficus benghalensis plant parts Patent Application No:20538, 2021)
Application of Herbal Medicine as Proliferation and Differentiation Effectors of Human Stem Cells

Udagama, Preethi Vidya; Udalamaththa, Vindya (Herbal Medicine, Chapter 6, 2019)

One of the main streams of traditional medicine is herbal medicine; a wide range of medicinal plants and their individual parts are used for therapy. Though not scientifically validated, this traditional medicine practice ...
Immune modulation of parasite transmission in Plasmodium vivax malaria. Anti-gamete antibodies can both block and enhance transmission

Mendi, Kamini N.; Peiris, J.S.M.; Premawansa, Sunil; Udagama, Preethi V.; Munesinghe, Yamuna; Ranawaka, Maya; Carter, Richard; David, Peter H. (Molecular Strategies of Parasitic Invasion, pages 417-426, 1987)

Antibodies directed against Plasmodium vivax gametes can block the development of the parasite in the mosquito vector and interrupt transmission. Usi ng monoclonal antibodies we have defined two components of molecular ...
A keratinocyte and integrated fibroblast culture model for studying particulate matter-induced skin lesions and therapeutic intervention of fucosterol

Fernando, I. P. Shanura; Jayawardena, Thilina U.; Kim, Hyun-Soo; Vaas, A.P.J.P.; De Silva, H.I.C.; Nanayakkara, C.M.; Abeytunga, D.T.U.; Lee, WonWoo; Ahn, Ginnae; Lee, Dae-Sung; Yeo, In-Kyu; Jeon, You-Jin (2019)

Increased levels of particulate matter (PM) air pollutants in East Asia have resulted in detrimental health impacts increasing morbidity and mortality. Epidemiological studies suggest a possible relation between the ...
Preliminary evaluation of probiotic potential of yeasts isolated from bovine milk and curd of Sri Lanka

Rajawardana, D.U.; Hewajulige, I.G.N.; Nanayakkara, C.M.; Athurupana, S.K.M.R.A.; Madhujith, T. (2019)

There has been mounting interest in the health benefits associated with live microorganisms commonly known as probiotics. Many probiotic bacterial species have been identified. However, the potential of yeasts as a source ...

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