Abstract COVID-19 is a recent coronavirus outbreak caused by SARS-CoV-2 beginning in early December 2019 Wuhan China raising global health problems. The SARS main peptidase (SARS-CoV M(pro)) plays an essential role the life-cycle of virus and primary target for development anti-SARS agents. Also, viral 3-chymotrypsin-like cysteine protease 3 (3CLpro) enzyme controls replication its life cycle. ...

Euchroma gigantea (Linnaeus, 1758) o “Barrenador gigante metálico de la Ceiba”, es una especie Buprestidae (Insecta: Coleoptera) distribuida en gran parte América. El presente trabajo se realiza con finalidad ampliar el conocimiento distribución geográfica E. Venezuela. Con información recopilada aumenta número estados registrados para país, además incrementan los datos local y a nivel del cont...

Plants have been used since ancient times as an important source of biologically active substances. The aim of the present study was to investigate the phytochemical constituents (flavonoids and phenolics), antioxidant potential, cytotoxicity against HepG2 (human hepato carcinoma) cancer cell lines, and the antimicrobial activity of the methanol extract of selected traditional medicinal plants ...

Plants have played a significant role in traditional medicine for treating wide range of human ailments. Among the many medicinal herbs used Unani medicine, Bombax ceiba Linn. has been employed centuries. This herbaceous plant is renowned its impressive height, reaching approximately 150 feet. It can be found temperate and tropical regions Australia, Africa, and, Asia with occurrences India at ...

Sulfur dioxide (SO2) is a major air pollutant, especially in developing countries. Many trees are seriously impaired by SO2, while other species can mitigate air pollution by absorbing this gas. Planting appropriate tree species near industrial complexes is critical for aesthetic value and pollution mitigation. In this study, six landscape tree species typical of a subtropical area were investi...

Nitrous oxide fluxes and nitrogen cycling along a pasture chronosequence in Central Amazonia, Brazil B. Wick, E. Veldkamp, W. Z. de Mello, M. Keller, and P. Crill Humboldt University Berlin, Department of Soil Science and Site Science, Invalidenstr. 42, D-10115 Berlin, Germany Institute of Soil Science and Forest Nutrition, Georg August University Göttingen, Büsgenweg 2, D-37077 Göttingen, Germ...

The new isoflavone glucoside vavain 3'-O-beta-d-glucoside (1) and its aglycon, vavain (2), were isolated from the bark of Ceiba pentandra, together with the known flavan-3-ol, (+)-catechin, These novel structures were elucidated by one- and two-dimensional NMR experiments and by MS, IR, and UV spectroscopy as 5-hydroxy-7,4',5'-trimethoxyisoflavone 3'-O-beta-D-glucoside (1) and 5,3'-dihydroxy-7,...