Results 61 to 70 of about 12,812,869 (370)
THE PRODUCTION AND NATURE OF STREPTOCOLYSIN. [PDF]
JAMA: The Journal of the American Medical Association, 1903 In 1897 Bordet1drew attention to the fact that there generally is more or less hemolysis in the blood of a rabbit which has died of streptococcus infection. This hemolysis is not constantly observed, but was present, for instance, in 37 of 40 rabbits dying of streptococcus infection, in which it was looked for in this laboratory during the last eight ...
openaire +2 more sources
Network topology drives population temporal variability in experimental habitat networks
Population Ecology, EarlyView.Habitat patches connected by dispersal pathways form habitat networks. We explored how network topology affects population outcomes in laboratory experiments using a model species (Daphnia carinata). Central habitat nodes in complex lattice networks exhibited lower temporal variability in population sizes, suggesting they support more stable ...
Yiwen Xu +3 more
wiley +1 more source
Regional comparison study of Epimedium koreanum using UHPLC-QTOF/MS-based metabolomics approach
Applied Biological ChemistryThe untargeted metabolomics-based molecular networking approach combined with multivariate analysis, proves to be an effective strategy for distinguishing raw materials in herbal medicine according to specific criteria.
Alfan Danny Arbianto +7 more
doaj +1 more source
Intramolecular Imino Diels-Alder Reaction: Progress toward the Synthesis of Uncialamycin [PDF]
, 2009 We herein described an intramolecular imino Diels-Alder reaction promoted with BF3.OEt2/DDQ affording substituted quinolines. Using this procedure, we prepared the chiral quitioline moiety of the uncialamycin, a new enediyne natural ...
Desrat, S, van de Weghe, P
core +1 more source
Natural Products as Sources of New Drugs over the Nearly Four Decades from 01/1981 to 09/2019.
Journal of Natural Products, 2020 This review is an updated and expanded version of the five prior reviews that were published in this journal in 1997, 2003, 2007, 2012, and 2016. For all approved therapeutic agents, the time frame has been extended to cover the almost 39 years from the ...
D. Newman, G. Cragg
semanticscholar +1 more source
Natural products in endodontics
Saudi Medical Journal, 2018 Herbal remedies are used throughout the world, either in earlier or in recent times. The number of studies on this alternative therapeutic system increased in the last decades. In this paper, the relevant literature on the use of natural products in root canal therapy is revised from a MEDLINE database search.
Amal A. Almohaimede, Ebtissam M. Al-Madi
openaire +3 more sources
Geographic variation in walking activity in the red flour beetle Tribolium castaneum
Population Ecology, EarlyView.This study examined whether there is geographic variation in field populations, focusing on the moving activity in the red flour beetle Tribolium castaneum. Results showed significant differences in moving activity among field populations but no correlation with latitude or meteorological factors.
Kentarou Matsumura
wiley +1 more source
Applied Biological ChemistryNuclear Magnetic Resonance (NMR) spectroscopy has become indispensable for elucidating molecular structures in pharmaceutical and natural product chemistry, where precise stereochemical configurations critically determine biological activities and ...
Miyeon Bang, Jin Wook Cha
doaj +1 more source
Non-formal star-exponential on contracted one-sheeted hyperboloids
, 2015 In this paper, we exhibit the non-formal star-exponential of the Lie group SL(2,R) realized geometrically on the curvature contraction of its one-sheeted hyperboloid orbits endowed with its natural non-formal star-product.
Bieliavsky, Pierre +3 more
core +1 more source
Resistance-Gene Directed Discovery of a Natural Product Herbicide with a New Mode of Action
Nature, 2018 Bioactive natural products have evolved to inhibit specific cellular targets and have served as lead molecules for health and agricultural applications for the past century1–3.
Yan Yan +9 more
semanticscholar +1 more source