Browsing Chemistry by Issue Date

Chain tilt and surface disorder in lamellar crystals. A FTIR and SAXS study of labeled long alkanes

de Silva, D.S.M.; Zeng, X.; Ungar, G.; Spells, S.J. (Macromolecules, 2002)

Small-angle X-ray scattering (SAXS) and infrared spectroscopy (IR) are employed in a study of chain tilt and disorder in solution-crystallized long alkanes C198H398 and C12D25C192H384C12HD24 in extended and once-folded ...

Fungicidal activity of essential oils of Cinnamomum zeylanicum (L.) and Syzygium aromaticum (L.) Merr et L.M.Perry against crown rot and anthracnose pathogens isolated from banana

Ranasinghe, L.S.; Jayawardena, B.M.; Abeywickrama, K.P. (Letters in Applied microbiology, 2002)

Aims: To develop a post-harvest treatment system against post-harvest fungal pathogens of banana using natural products. Methods and Results:Colletotrichum musae was isolated and identified as the causative agent responsible ...

FTIR studies of molecular disorder in long chain n-alkanes: Chain tilt and chain end disorder

de Silva, D.S.M.; Gorce, J.P.; Wickremarachchi, P.A.S.R.; Spells, S.J. (Macromolecular Symposia, 2002)

Applications of MS and NMR Techniques in Biopesticide Analysis

Senevirathne, K.N. (Monograph on Biopesticides: Current Status and Future Trends, 2003)

Risk assessment of pesticide contamination potentials in Embilipitiya area

Watawala, R.C.; Liyanage, J.A.; Mallawatantri, A.P. (University of Sri Jayawardhanapura, 2003)

Polyphenol oxidase inhibitory activity of essential oils of Cymbopogon nardus and Cymbopogon citratus

Ranasinghe, L.S.; Jayawardena, B.M.; Abeywickrama, K.P. (Journal of Tropical Medicinal plants, 2003)

Polyphenol oxidase (tyrosinase) (EC 1.14 18.1) is responsible for the hyperpigmentation in humans, insect molting process and browning reactions of plants. There is interest to develop methods to control polyphenol oxidase ...

A study of synergistic effects of some Sri Lankan essential oils against cowpea bruchids

Paranagama, P.A.; Adhikari, A.A.C.K.; Abeywickrama, K.P.; Bandara, K.A.N.P. (Callosobruchusmaculatus,Proceedings of eleventh Asian symposium on Medicinal plants, Spices and Other Natural Products, Kunming, China, 2003)

Effect of steam volatile constituents of some tropical plant species on Callosobruchusmaculatus

Subasinghe, C.W.; Paranagama, P.A. (Proceedings of Sri Lanka Association of Advancement of Science, 2003)

A preliminary study on the presence of heavy metals in aquatic plants from a freshwater wetland at Kelaniya

Nirbadha, K.G.S.; Liyanage, J.A.; Amarasinghe, M.D. (University of Sri Jayawardhanapura, 2003)

Effect of the essential oils of Cymbopogon citratus, C. nardus and Cinnamomum zeylanicum on pest incidence and grain quality of rough rice (paddy) stored in an enclosed seed box

Paranagama, P.A.; Abeysekera, T.; Nugaliyadde, L.; Abeywickrama, K.P. (WFL Publisher, 2003)

The protective effect of the essential oils of Cymbopogon citratus, C. nardus and Cinnamomum zeylanicum leaf on paddy stored in wooden boxes lined with aluminium foil were evaluated. After 168 days of storage in oil treated ...

Fungicidal and anti-aflatoxigenic effects of the essential oil of Cymbopogon citratus (DC.) Stapf. (lemongrass) against Aspergillus flavus Link. isolated from stored rice

Paranagama, P.A.; Abeysekera, K.H.T.; Abeywickrama, K.P.; Nugaliyadde, L. (The Society for Applied Microbiology, 2003)

Aims: To develop a natural fungicide against aflatoxigenic fungi, to protect stored rice, using the essential oil of lemongrass. Methods and Results: Aspergillus flavus Link. was isolated from stored rice and identified ...

Deterrent effects of some Sri Lankan essential oils on oviposition and progeny production of the cowpea bruchid, Callosobruchus maculatus (F.)(Coleoptera; Bruchidae)

Paranagama, P.; Adhikari, C.; Abeywickrama, K.P.; Bandara, P. (2003)

Essential oils extracted from five plant materials were tested on oviposition and progeny production of F1 adult of cowpea bruchid, Callosobruchus maculatus on cowpea seeds. All oils tested showed a significant inhibition ...

Bioaccumulation potential of three toxic heavy metals in shrimp, Penaeus monodon from different fractions of the culture environment

Senadheera, S.P.S.D.; Pathiratne, K.A.S. (Sri Lanka Association for Fisheries and Aquatic Resources, 2003)

Perpendicular and tilted chains in lamellar crystals

de Silva, D.S.M.; Zeng, X.B.; Ungar, G.; Spells, S.J. (Journal of Macromolecular Science-Physics, 2003)

Chain tilt and surface disorder were investigated in end-deuterated long n-alkane C12D25C192H384C12HD24 crystallized from solution and in n-alkane C162H326 crystallized from melt. Small-angle X-ray scattering and infrared ...

Use of waste generated from cinnamon bark oil (Cinnamomum zeylanicum Blume)extraction as a post harvest treatment for Embul banana

Ranasinghe, L.S.; Jayawardena, B.M.; Abeywickrama, K.P. (Journal of Food , Agriculture and Environment, 2003)

Waste water samples collected from a cinnamon bark oil distillery, was extracted and analyzed by Gas Chromatography. The major constituent of the extracted oil solution was cinnamaldehyde (66.2%). Previously isolated and ...

Imine Hydrolysis and Role of a Rhodium(I)-Imine-Amine Complex in Homogeneous H2-Hydrogenation of the Imine and a Rare Example of Inequivalent NH2 Protons

Marcazzan, P.; Abu-Gnim, C.; Senevirathne, K.N.; James, B.R. (Inorganic Chemistry, 2004)

Bioactivity of volatile constitutents of Sri Lankan plants against cowpea bruchids, Callosobruchus maculatus

Paranagama, P.A.; Abeywickrama, K.P.; Bandara, K.A.N.P.; Adhikari, A.A.C.K. (Proceedings of AFASSA Regional Symposium on Natural Products, 2004)

Quantification of arsenic and phosphorus in calcium carbide treated mangoes

Haturusinghe, L.S.; de Silva, D.S.M.; Wimalasena, S. (Sri Lanka Association for the Advancement of Science, 2004)

Use of recycled polyethylene teraphthalate and rice hull in polymer concrete

Tissera, P.T.N.; Motha, J.T.S.; de Silva, D.S.M. (Sri Lanka Association for the Advancement of Science, 2004)

Cymbopogon citratus (lemongrass) and citral a+ b spray treatments alone or in combination with sodium bicarbonate in controlling crown rot in Embul banana (Musa acuminata AAB)

Abeywickrama, K.P.; Kularathna, L.; Sarananda, K.; Abeygunawardena, D. (2004)

The mounting pressure against synthetic fungicidal dips and sprays, restrict their use in controlling crown rot, a major post-harvest disease in banana. Generally regarded as safe (GRAS) compounds have a great potential ...

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