Results 11 to 20 of about 20,144 (188)
Comprehensive Analysis of Sinomenii caulis and Menispermi rhizoma Based on Ultra-High Performance Liquid Chromatography and Ultra-High Performance Liquid Chromatography-Quadrupole Time-of-Flight-Mass Spectrometry. [PDF]
Anal Sci AdvABSTRACT Sinomenii caulis (SC) and Menispermi rhizoma (MR) are Chinese herbal medicines from the same family and are often confused. To achieve identification of SC and MR, the paper used the differential chemical components and the combination characteristics of chemical components to carry out a comprehensive analysis.
Tao Y +9 more
europepmc +2 more sources
Scientific Reports, 2022 Porous silica particles were prepared by sol–gel method with some modification to get wide-pore particles. These particles were derivatized with N-phenylmaleimide-methylvinylisocyanate (PMI) and styrene by reversible addition fragmentation chain transfer
Sarah Alharthi +6 more
doaj +1 more source
Degradation of Multiple Peptides by Microcystin-Degrader Paucibacter toxinivorans (2C20)
Toxins, 2021 Since conventional drinking water treatments applied in different countries are inefficient at eliminating potentially toxic cyanobacterial peptides, a number of bacteria have been studied as an alternative to biological filters for the removal of ...
Allan A. Santos +6 more
doaj +1 more source
Degrees of freedom effect on fragmentation in tandem mass spectrometry of singly charged supramolecular aggregates of sodium sulfonates [PDF]
, 2013 The characteristic collision energy (CCE) to obtain 50% fragmentation of positively and negatively single charged non-covalent clusters has been measured.
Bongiorno, David +7 more
core +2 more sources
Acetaldehyde‐enkephalins: pronounced changes in the opiate activity of methionine‐enkephalin and leucine‐enkephalin on reaction with acetaldehyde [PDF]
FEBS Letters, 1980 We have shown that the two major endogenous opioid peptides, methionine-enkephalin and leucineenkephalin [ 1,2] (enkephalin [Met’] and enkephalin[Leu’]) rapidly react with acetaldehyde in aqueous buffers to give a stable ‘acetaldehyde-enkephalin’ adduct, referred to as ‘acetaldehyde-enkephalin[Met’]’ and ‘acetaldehyde-enkephalin [Leu’]‘, respectively ...
Summers, Michael C., Hayes, Roger J.
openaire +2 more sources
International Journal of Aquatic Biology, 2019 The current study focused on the effect of administration of the neurotransmitter leucine enkephalin on ovarian maturation in the freshwater crab Travancoriana schirnerae.
Navya Gopal, Arath Raghavan Sudha Devi
doaj +1 more source
Three protected tetrapeptides [PDF]
, 1996 The structures of three protected tetrapeptides, containing the Boc-Gly-Gly-Phe-X-OMe chain, tert-butoxycarbonyl-glycy-glycl-phenylalanine-leucine methyl ester dihydrate, Boc-Gly-Gly-L-Phe-D-Leu-OMe, C25H38N4O7·2H2O, tert-butoxycarbonyl-glycy-glycl ...
Casalone, Gianluigi, Fenude, Emma
core +1 more source
Biological Procedures Online, 1998 The intestinal absorption of analgesic peptides (leucine enkephalin and kyotorphin) and modified peptides in rat were studied. Although these peptides were not absorbed, the absorbability (absorption clearance) of these peptides were increased in the ...
Mizuma Takashi, Awazu Shoji
doaj +1 more source
New Aspects of Thromboangiitis obliterans (von Winiwarter-Buerger's Disease) [PDF]
, 1984 The existence of thromboangiitis obliterans as a clinical entity has been a matter of debate for many years. In contrast to other immunovasculitides there is no organ involvement while peripheral vessels are affected.
Berlit, Peter +3 more
core +1 more source
Comparative Analysis of Dalargin Pharmaceutical Substance Identification Methods
Разработка и регистрация лекарственных средств, 2020 Introduction. The quality control of a medicinal product needs to be systematically improved in connection with a continuous increase in the requirements for the quality of medicines. When assessing the quality of substances and drugs, the most important
M. G. Shulzhenko +5 more
doaj +1 more source