Science: Recent submissions

Now showing items 701-720 of 3802

Multigene Phylogeny Reveals Endophytic Xylariales Novelties from Dendrobium Species from Southwestern China and Northern Thailand

Ma, X.; Chomnunti, P.; Doilom, M.; Daranagama, D. A.; Kang, J. (Journal of fungi (Basel, Switzerland), 2022)

Xylariales are common endophytes of Dendrobium. However, xylarialean species resolution remains difficult without sequence data and poor sporulation on artificial media and asexual descriptions for only several species and ...
Morphological and molecular identification of fungi for their association with postharvest fruit rots in some selected citrus species

Jayasekara, A.; Daranagama, A.; Kodituwakku, T.D.; Abeywickrama, K. (2022)

Purpose: The availability of fresh Citrus fruits is limited by their susceptibility to invasion by microbial pathogens which leads to cause serious postharvest losses. The present study was carried out to isolate and ...
First comprehensive study on distribution frequency and incidence of seed-borne pathogens from cereal and legume crops in Sri Lanka

Ganeshalingam, A.; Daranagama, D. A. (2022)

Sri Lanka as an agricultural country requires seed health testing to rnanage crop diseases. So tar no comprehensive research has been can'ied out for the proper identi fication olseed mycoflora af ltcting the seed quality ...
Changes in the Antioxidant Micronutrients and Volatile Metabolomics Profile of Selected Edible Vegetables Cooked with Coconut Milk and Heat Extracted Coconut Oil

Dewangania, H. G. Nadini; Jayawardena, Bimali; Chandrasekara, N. V.; Chandrasiri Waliwita, W. A. L. (Journal of Culinary Science & Technology, 2022)

Coconut milk, coconut oil, spices, condiments, and herbs are added to enhance flavor and aroma. The objective of the present study was to evaluate the effect of cooking methods on the total polyphenol content (TPC), ...
Oviposition Preference and Performance of Bactrocera dorsalis Hendel, (Diptera: Tephritidae) on Four Colour Types of Willard mango (Mangifera indica L)

Wijekoon, W. M.C.D.; Ganehiarachchi, G. A.S.M.; Wegiriya, H. C. E.; idanage, S. P. (Egyptian Academic Journal of Biological Sciences. A, Entomology, 2022)

Bactrocera dorsalis Hendel is the most widespread serious fruit pest in Asia and the knowledge on oviposition behaviour of B. dorsalis on different fruit varieties are vital for effective management of the pest. Hence, the ...
Statistical Tool to Address the Influence of Urbanization in Groundwater Quality in Colombo District, Sri Lanka

Antalyn, Babu; Weerasinghe, V.P.A. (SAGE, 2022)

Management of groundwater quality is becoming a key feature of a sustainable future while implementing sustainable development goals which are given by United Nations. During past decades, rapid land-use changes, urbanization, ...
Circularly-polarized-pulse-driven ultrafast optical currents in monolayer hexagonal Boron Nitride (h-BN)

Hewageegana, P.; Apalkov, V. (Solid State Communications, 2022)

We predict the fundamentally fastest, ultrafast optical currents in monolayer hexagonal Boron Nitride (h-BN) by a circularly-polarized single-oscillation optical pulse. The femtosecond currents in gapped graphene and ...
Probing Adaptation of Hydration and Protein Dynamics to Temperature

Doan, Luan C.; Dahanayake, Jayangika N.; Mitchell-Koch, Katie R.; Singh, Abhishek K.; Vinh, Nguyen Q. (American Chemical Society, 2022)

Protein dynamics is strongly influenced by the surrounding environment and physiological conditions. Here we employ broadband megahertz-to-terahertz spectroscopy to explore the dynamics of water and myoglobin protein ...
Dip treatment of Aloe vera gel and Aloe vera in combination with cinnamon essential oils on stem-end rot of mango cv. ‘Karthakolomban’

Karunarathna, N. S. N.; Abeywickrama, K.; Kodituwakku, T. D. (2022)

This study was conducted to investigate the applicability of Aloe vera gel alone and mixed with cinnamon leaf and bark oil in controlling stem-end rot (SER) and extending the shelf life of mango cv. ‘Karthakolomban’. Mangoes ...
Ethanolic extract of rice bran: a thermally stable preservative for edible oils and cake

Seneviratne, K.P.; Anjali, N.V.P.; Senanayake, C.M. (2022)

The purpose of this study was to evaluate the thermal stability of the rice bran extract (RBE) and analyze the effect of RBE on the shelf-life of sunflower oil and the quality characteristics and shelf-life of baked cake. ...
An Approach for Prediction of Weekly Prices of Green Chili in Sri Lanka: Application of Artificial Neural Network Techniques

Basnayake, B.R.P.M.; Kaushalya, K.D.; Wickaramarathne, R.H.M.; Kushan, M.A.K.; Chandrasekara, N.V. (Journal of Agricultural Sciences – Sri Lanka, 2022)

Purpose: Predicting the prices of crops is a principal task for producers, suppliers, governments and international businesses. The purpose of the study is to forecast the prices of green chili, which is a cash crop in ...
Characterization of Bioactive Actinomycetes Isolated from Kadolkele Mangrove Sediments, Sri Lanka

Naligama, Kishani N.; Weerasinghe, Kavindi E.; Halmillawewa, Anupama P. (Journal of Microbiology, vol.71, 2022)

Exploring untapped microbial potentials in previously uncharted environments has become crucial in discovering novel secondary metabolites and enzymes for biotechnological applications. Among prokaryotes, actinomycetes ...
Kauffman bracket versus Jones polynomial skein modules

Almeida, Shamon; Gelca, Razvan (arXivLabs, 2022)

This paper resolves the problem of comparing the skein modules defined using the skein relations discovered by P. Melvin and R. Kirby that underlie the quantum group based Reshetikhin-Turaev model for SU(2) Chern-Simons ...
Maximum Power Point Tracking of an Off-grid Photovoltaic System Consisting of a Series Connected Supercapacitor with a Step-down Converter

Piyumal, P. L. A. K.; Ranaweera, A. L. A. K.; Kalingamudali, S. R. D.; Kularatna, N. (The Electrochemical Society, 2022)

An off-grid photovoltaic (PV) system's PV array is connected with a charge controller as the first power conversion stage. The average efficiency of the power stage of charge controllers is around 90%. Supercapacitor ...
The effect of chemical exudates of three larvivorous fish species on oviposition preference of Aedes aegypti and Aedes albopictus (Diptera: Culicidae)

Rathnayaka, R.M.G.S.; Jayatunga, D.P.W.; Ganehiarachchi, G.A.S.M. (Med Vet Entomol, 2021)

Mosquito species Aedes aegypti and Aedes albopictus are vectors of dengue worldwide. Mosquito vector control through maintaining larvivorous fish in water bodies is generally suggested, however, its underlying role towards ...
Effect of pre-surface treatments on p-Cu2O/Au Schottky junctions

Kafi, F.S.B.; Jayathilaka, K.M.D.C.; Wijesundera, R.P.; Siripala, W. (Journal of the National Science Foundation of Sri Lanka, 2021)

Cuprous oxide (Cu2O) is a suitable semiconducting material in fabrication for low-cost, eco-friendly semiconductor junction devices. Besides the parameterization of the growth conditions of Cu2O, formation of metal contacts ...
Medium composition affects the heavy metal tolerance of microalgae: a comparison

Rathnayake, I.V.N.; Megharaj, M.; Beer, M.; Naidu, Ravi (Journal of Applied Phycology, 2021, 2021)

Tolerance of the three metals cadmium (Cd), copper (Cu), and zinc (Zn) by four microalgal species was investigated in three different culture media available in the literature together with a modified version in order to ...
Heavy metal toxicity to bacteria – Are the existing growth media accurate enough to determine heavy metal toxicity?

Rathnayake, I.; Megharaj, M.; Krishnamurti, G; Bolan, N. S.; Naidu, R. (Chemosphere, 2021, 2021)

A new minimal medium was formulated considering the limitations of the existing media for testing heavy metal sensitivity to bacteria. Toxicity of cadmium and copper to three bacteria was investigated in the new medium and ...
Effects of Low-Cost Organic Fertilizer Derived from Invasive Alien Plants and Shade on Growth Performances and Yield of Aloe vera (L.) Burm.f.

Bandaranayake, A.R.B.W.M.C.D.; Ratnayake, R.M.C.S. (Institute of Biology, Sri Lanka, 2021, 2021)

Aloe vera is a popular herb for cosmetic and medicinal industries at the global level. The study was conducted to evaluate the effects of organic liquid fertilizer (OLF) from invasive alien plant species (IAPS), Mimosa
Synthesis, In Silico Studies, and Evaluation of Syn and Anti Isomers of N-Substituted Indole-3-carbaldehyde Oxime Derivatives as Urease Inhibitors against Helicobacter pylori

Kalatuwawege, I.P.; Gunaratna, M.J.; Udukala, D.N. (molecules, 2021, 2021)

• Gastrointestinal tract infection caused by Helicobacter pylori is a common virulent disease found worldwide, and the infection rate is much higher in developing countries than in developed ones. In the pathogenesis of ...

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