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Department of Biosystems Technology: Recent submissions

Now showing items 1-20 of 36

Detailed Morphology, with Reference to Abundance, of Acartia Species in Malala Lagoon in Bundala National Park

Lasanthi, A.H.P.; Chandana, E.P.S.; Siriwardana, V.P.K.; Weerasinghe, I.M.J.; Senaratna, R.J.P.S.; Athukorale, R.; Piyadarshani, R. K.G.; De S, Amarasinghe N.J.; Peiris, L.D.C.; Samayawardhena, L.A. (Institute of Biology, Colombo, 2001)

Freshwater Calanoid copepods are a group of free-living fresh water crustaceans. They are planktonic and limnetic and they occur in habitats varying from freshwater to seawater. We investigated detailed morphology of ...
Physico-chemical and biological environment of Malala lagoon at Bundala National park under overwhelming fresh water influence

Chandana, E.P.S.; Ravindra, R.; Lasanthi, P.; De S, Amarasinghe N. J.; Peiris, L.D.C.; Samayawardhena, L.A. (Sri Lanka Association for the Advancement of Science, Colombo, 2001-11-26)

Bundala National Park situated in Southern Sri Lanka is the only Ramsar wetland system in the country. Malala lagoon, the largest water body in Bundala National Park is a very productive ecosystem that is demarcated by ...
An Investigation of the Effects of Low Concentrations of Chlorpyrifos on Epididymal Sperm Mutation in Rats

De Silva, W.A.J.P.; Deepananda, K.H.M.A.; Chandana, E.P.S.; Peiris, L.D.C.; Samayawardhena, L.A. (Sri Lanka Association for the Advancement of Science, Colombo, 2001-11-26)

The present study investigated effects of extremely low concentrations of Chlorpyrifos (Pyrimec) to reproductive structure and function of male rats. First, a group o f animals (4 groups; n=10) were given oral dose of ...
Analysis of Socio-Ecological Factors Affecting Bundala National Park

Chandana, E.P.S.; Dewasurendra, R.; Dharmadasa, L.; Priyangani, P.M.C.; De Silva, P.M.C.; Ravindra, R.; Lasanthi, P.; De S, Amarasinghe N. J.; Peiris, L.D.C.; Samayawardhena, L.A. (Sri Lanka Association for the Advancement of Science, Colombo, 2001-11-26)

Bundala National Park (BNP) is the only Ramsar wetland in Sri Lank4 which is reputed for its rich biological diversity of avifauna. The objective of this study was to investigate the socioecological influence of people ...
Abundance and distribution of Calanoid copepods(Acartia species & Phyllodiaptomus annae) in Malala lagoon, Bundala National Park- Sri Lanka are partly water quality dependent: effects of sand bar opening on copepod dynamics

Lasanthi, A.H.P.; Chandana, E.P.S.; Ravindra, W.; De S, N.J. Amarasinghe; Peiris, L.D.C.; Samayawardhena, L.A. (2001)

Zooplanktons are considered as an important component of ecosystem functioning and they are abundant in tropicalwaters. Nevertheless more studies are necessary to establish ecosystem-habitat species relationships of ...
Damages of Paraquat Exposure to Male Reproductive System and Affect on Spermatogenesis in Rats and Mice

Deepanada, K.H.M.A.; De Silva, W.A.J.P.; Chandana, E.P.S.; Priyanka, S.B.T.; Weerasinghe, S.S.S.; Dharmasiri, H.W.; Samayawardhena, L.A. (Sri Lanka Association for the Advancement of Science, Colombo, 2001-11-26)

Paraquat is one of the most widely used herbicidal chemicals in the world. Even the lowest doses of Paraquat is reported to cause measurable adverse effects on growth, survival and reproduction. Target organ exposure ...
A survey of odonate assemblages associated with selected wetland localities in southern Sri Lanka

Chandana, E.P.S.; Rajapaksha, A.C.D.; Samarasekara, W.G.K.H. (TCRP FOUNDATION, 2012-12)

The dragonflies and damselflies are a major insect group (Class Insecta; Order Odonata) associated with water courses. Odonate assemblages with reference to their habitat characters have not been widely studied in Sri ...
Synthesis and phosphate adsorption performance of elephant dung biochar modified with magnesium and iron

Abeysinghe, N.; Jetsrisuparb, K.; Karunarathna, K.H.T .; Chandana, E.P.S.; Suwanree, S.; Kasemsiri, P.; Chindaprasirt, P.; Knijnenburg , J.T.N. (Metallurgy and Materials Science Research Institute (MMRI), Chulalongkorn University., 2022-03)

The large production volume combined with the high lignocellulose content makes elephant dung an attractive and underutilized biomass resource, but also presents waste management problems for elephant orphanages. This study ...
RECK modulates Notch signaling during cortical neurogenesis by regulating ADAM10 activity

Muraguchi, Teruyuki; Takegami, Yujiro; Ohtsuka, Toshiyuki; Kitajima, Shunsuke; Chandana, E.P.S.; Omura, Akira; Miki, Takao; Takahashi, Rei; Matsumoto, Naoya; Ludwig, Andreas; Noda, Makoto; Takahashi, Chiaki (Nature Publishing Group, 2007-06-10)

We report that during cortical development in the mouse embryo, reversion-inducing cysteine-rich protein with Kazal motifs (RECK) critically regulates Notch signaling by antagonizing the ectodomain shedding of Notch ligands, ...
Involvement of the Reck tumor suppressor protein in maternal and embryonic vascular remodeling in mice

Chandana, E.P.S.; Maeda, Yasuhiro; Ueda, Akihiko; Kiyonari, Hiroshi; Oshima, Naoko; Yamamoto, Mako; Kondo, Shunya; Oh, Junseo; Takahashi, Rei; Yoshida, Yoko; Kawashima, Satoshi; Alexander, D.B; Kitayama, Hitoshi; Takahashi, Chiaki; Tabata, Yasuhiko; Matsuzaki, Tomoko; Noda, Makoto (BioMed Central, 2010)

Developmental angiogenesis proceeds through multiple morphogenetic events including sprouting, intussusception, and pruning. Mice lacking the membrane-anchored metalloproteinase regulator Reck die in utero around embryonic ...
The Reck tumor suppressor protein alleviates tissue damage and promotes functional recovery after transient cerebral ischemia in mice

Wang, Huan; Imamura, Yukio; Ishibashi, Ryota; Chandana, E.P.S.; Yamamoto, Mako; Noda , Makoto (Blackwell Publishing Ltd, 2010)

The extracellular matrix (ECM) is important for both structural integrity and functions of the brain. Matrix metalloproteinases (MMPs) play major roles in ECM-remodeling under both physiological and pathological conditions. ...
Localization of the membrane-anchored MMP-regulator RECK at the neuromuscular junctions

Kawashima, Satoshi; Imamura, Yukio; Chandana, E.P.S.; Noda, Toru; Takahashi, Rei; Adachi, Eijiro; Takahashi, Chiaki; Noda, Makoto (Blackwell Publishing Ltd, 2008)

Nerve apposition on nicotinic acetylcholine receptor clusters and invagination of the post-synaptic membrane (i.e. secondary fold formation) occur by embryonic day 18.5 at the neuromuscular junctions (NMJs) in mouse ...
Factors affecting the avi-faunal distribution in the three lagoons (Malala, Embillakala and Bundala Lewaya) of Bundala National Park (A Ramsar Wetland) in Sri Lanka

Chandana, E.P.S.; Amarasinghe, N. J. de S.; Samayawardhena, L.A. (University of Ruhuna, Matara, Sri Lanka, 2008-09)

Bundala National Park, covering an area of 6216 ha, is located about 250 Km Southeast of Colombo, in the Hambantota District. The shallow brackish water lagoons located within the park - Koholankala (390 ha), Malala (650 ...
Some Hydrographic aspects of Koggala Lagoon with preliminary results on distribution of the marine bivalve Saccostrea forskalli : pre-tsunami status

Gunawickrama, K.B.S.; Chandana, E.P.S. (Sri Lanka journals online, 2006-09)

Selected hydrographic parameters of Koggala lagoon over a period of four months in 2002- 2003 are reported together with the preliminary results on the distribution of a marine bivalve within lagoon. Such data prior to ...
A note on bird–habitat relationship in Kirala Kele, Sri Lanka

Samarasekara, W.G.K.H.; Chandana, E.P.S.; Amarasinghe, N.J.de S. (Sri Lankan Journal Online, 2013)
Cytokine Mediated Immunomodulatory Properties of Selected Sri Lankan Medicinal Plants

Gunasekara, T.D.K.S.C.; Chandana, E.P.S. (2014-03)

Present study has tested the immunomodulatory properties of Ethanolic extracts of roots of Clerodendrum infortunatum Linn., Croton laccifer Linn. And Solanum surattense Burm. f, rhizomes of Alpinia calcarata Rosc. and ...
Habitat quality and climate variability determine odonate species diversity and distribution patterns in selecte...

Sandamini, P.M.M.A; Gunarathna, S.D.; Chandana, E.P.S. (Academia, 2019-07)

The present study was conducted to reveal the odonate diversity and distribution patterns in selected habitats with reference to habitat quality and climate variability in order to determine the conservation status of ...
Urinary biomarkers KIM-1 and NGAL may predict Chronic Kidney Disease of uncertain etiology (CKDu) among Sugarcane farmers in Sri Lanka.

Ekanayake, E.M.D.V .; Abdul, K.S.M.; Thakshila, W.A.K.G.; Jayasinghe, S.S.; Chandana, E.P.S.; Jayasumana, C; Siribaddana, S.H.; De Silva, P.M.C.S. (2016)

Chronic kidney disease of uncertain etiology has become a major health problem among farming communities in rural Sri Lanka. This study determined the prevalence of CKDu following WHO case definition of CKDu in two disease ...
Immunostimulative eff ects of Cyperus rotundus, Alpinia calcarata, Solanum surattense, Clerodendrum infortunatum and Croton laccifer extracts combination on cyclophosphamideinduced immunosuppression in rats

Chandana, E.P.S.; Kithmini, K.K.A.; Gunasekara, T.D.K.S.C. (University of Ruhuna, Matara, Sri Lanka, 2015-06-26)

The present work was undertaken to validate the combinatorial effect of the ethanol extractions of rhizomes of Cyperus rotundus Linn. (“Kalanduru”) and Alpinia calcarata Rosc. (“Heen Araththa”), and root barks of Solanum ...
Are Ealry Development Satges of Frogs in Danger due to Environmental Pollutants? An Investigation with Low Concentrations of Chlorpyrifos

Chandana, E.P.S.; Samayawardhenal, L.A.; Pieris, L.D. C; Dharmashi, H.W. (Sri Lsnka Assaciatian for the Advancement of science, 2000-11-27)

Modern pollutants in the env:rorunent have been blauaed for adverse effeots on varisus orga&isms at cellular and sub-ceilular level. Pestieides luve bee,n given special atrention because of their extensive usage in ...

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