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Dinesh E. Gabadage,W. Madhava S. Botejue,Thilina D. Surasinghe,Mohomed M. Bahir,Majintha B. Madawala,Buddhi Dayananda,Vimukthi U. Weeratunga,D.M.S. Sameera Karunarathna 국립중앙과학관 2015 Journal of Asia-Pacific Biodiversity Vol.8 No.2
A survey was randomly conducted in the marginal areas of Maduruoya National Park, Sri Lanka for a period of > 7 years. These study sites are located within the dry zone and the intermediate zone. The main vegetation type of the area is dry mixed evergreen forest. We recorded 196 bird species belonging to 66 families, and they included 161 breeding residents, 25 purely migrants, nine both resident and migrants, one vagrant, 14 nationally threatened, three globally threatened, and 10 endemic species. We also report the first-ever records of Chestnut-backed Owlet, Red-faced Malkoha, and Spot-winged Thrush from this dry area. However, these precious habitats and its species are threatened because of irresponsible human activities such as forest fires, land filings, hunting, road kills, encroachments, garbage dumping, agrochemicals, granite-rock blasting, logging, and road constructions. Therefore, we recommend that relevant authorities take immediate conservation action to increase the protection of these marginal areas or buffer zone in the near future.
Sreelatha, S.,Dinesh, E.,Uma, C. Asian Pacific Journal of Cancer Prevention 2012 Asian Pacific journal of cancer prevention Vol.13 No.6
In recent years there has been a substantial increase in the use of functional foods for disease control. Fruits and vegetables produce phytochemicals such as flavonoids and antioxidants which can lower oxidative stress and reduce the risk of chronic ailments like cancer. The aim of the present study was to investigate the antioxidant capacity and the possible protective effects of Amaranthus paniculatus leaves on the antioxidant defense system in Ehrlich's ascites carcinoma (EAC)-treated mice. Oral administration of the leaf extract at different doses caused a significant decrease in tumor volume, viable cell count and tumor weight and elevated the life span of EAC bearing mice. It also showed an improved antioxidant potential as evidenced by a significant increase in the cellular antioxidant defense system such as catalase, superoxide dismutase and reduced glutathione and also significantly reduced the levels of TBARS. The levels of RBC, hemoglobin and lymphocyte count were altered in EAC bearing mice and were reverted back to near normal levels after the treatment with the leaf extracts. Their adequate content of total phenolics and flavonoids, DPPH scavenging activity which further suggests that the extracts exert a significant protection against oxidative stress conditions.
Lu, Li Ping,Finlayson, Chris E.,Kabra, Dinesh,Albert‐,Seifried, Sebastian,Song, Myoung Hoon,Havenith, Remco W. A.,Tu, Guoli,Huck, Wilhelm T. S.,Friend, Richard H. WILEY‐VCH Verlag 2013 Macromolecular chemistry and physics Vol.214 No.9
<P><B>Abstract</B></P><P>A study of the organic semiconductor F8TBT is presented, directly comparing a conventional form (F8TBT‐out) with a form with varied alkyl side‐chain position (F8TBT‐in), in terms of optical properties and device performance in light‐emitting‐diodes (LEDs). Computational simulations of the side‐chain position with respect to the TBT unit reveal geometrical differences between F8TBT‐out and F8TBT‐in. π–π conjugation on the backbone of F8TBT‐in is interrupted by a distortion of the benzothiadiazole ring, leading to a blue‐shift of the absorption spectrum and increased photoluminescence quantum efficiency. Both conventional and hybrid LEDs demonstrate that devices with F8TBT‐in show improved performance, as compared to F8TBT‐out, illustrating how tuning the optoelectronic properties of conjugated polymers by varying the placement of side chains has an important role in device optimization.</P>