Results 21 to 30 of about 7,328 (210)
Effects of Acute and Chronic Exposure to Semicarbazide on the Sea Cucumber Apostichopus japonicus
Frontiers in Environmental Science, 2021 The effects of acute and chronic exposure to semicarbazide were carried out on the sea cucumber Apostichopus japonicus. A half-maximal lethal concentration of 3.72 g/L of semicarbazide hydrochloride (95% confidence interval 3.43–4.02 g/L) was deduced. At
Xiuhui Tian +11 more
doaj +1 more source
Infrared Irradiation-Assisted Pd-Catalyzed C(sp<sup>3</sup>)─H Arylation and Tandem Cyclization of Ortho-Tolualdehydes. [PDF]
ChemistryA rapid and efficient protocol for the synthesis of 2‐benzylbenzaldehydes and anthracenes is reported, based on the infrared (IR) irradiation‐assisted Pd‐catalyzed C(sp3)─H arylation and the tandem C(sp3)─H arylation/electrophilic aromatic cyclization of ortho‐tolualdehydes with aryl iodides via a transient directing group (TGD) strategy.
Martina MR +6 more
europepmc +2 more sources
Study of the inhibitory effect of some thiourea compounds on the activity of enzyme purified polyamine oxidase from the blood of patients with type 1 diabetes [PDF]
مجلة التربية والعلم, 2013 The research included determination of polyamine oxidase (PAO) activity in normal and diabeti patients type I females. It was found that the activity of PAO in red blood cells (RBC) and plasma in patients were significantly higher than that of normal ...
Nashwan Abbou +2 more
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Ribosomal Synthesis of Topologically Defined Thioisoindole-Bridged Bicyclic Peptides. [PDF]
Angew Chem Int Ed EnglA flexible in vitro translation (FIT) system‐based strategy for ribosomal synthesis of thioisoindole‐bridged bicyclic (TiB) peptides is developed. The flexizyme substrate Ac‐Ala(NtBA)Sc‐CME is efficiently incorporated into FIT to generate ribosomal peptides bearing N‐terminal Ac‐Ala(NtBA)Sc as the cyclization handle, which after mild deprotection ...
Zhang Y, Vinogradov AA, Sun Y, Suga H.
europepmc +3 more sources
Azapeptides as an Efficient Tool to Improve the Activity of Biologically Effective Peptides
Future Pharmacology, 2022 Peptides are highly potent biological active compounds with excellent selectivity and binding, but they have some drawbacks (e.g., low stability in vivo because of the enzymatic degradation, and fast elimination).
Karima Tarchoun +2 more
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Exaltation of the Development of Poliovirus by Semicarbazide [PDF]
Journal of Bacteriology, 1966 Grossberg, Sidney E. (Institut Pasteur, Paris, France), Marguerite Lwoff, and André Lwoff . Exaltation of the development of poliovirus by semicarbazide. J. Bacteriol. 92: 1473–1477. 1966.—Semicarbazide (NH 2 —NH—CO—NH 2 ) remarkably
S E, Grossberg, M, Lwoff, A, Lwoff
openaire +2 more sources
Efeitos da semicarbazida no esqueleto de ratos Wistar em crescimento
Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 2012 The effects of semicarbazide hydrochloride on skeletal tissues were evaluated using Wistar rats. In the animals submitted to the administration of semicarbazide, radiological examination showed bone and articular alterations with growth plates ...
A. Ramos +3 more
doaj +1 more source
, 2022 To assess the correlation of semicarbazide contents between shellfish and the environment, semicarbazide was determined in samples from 11 sites in Jincheng Bay, Sishili Bay, and Laizhou Bay in northern Shandong Province, China.
Wu, Mengmeng +12 more
core +1 more source
Presence of nitrofurans and their metabolites in gelatine
EFSA Journal, 2021 Following the detection of semicarbazide (SEM) in gelatine by Italian Authorities, at levels exceeding by three times the reference point for action (RPA) of 1 μg/kg, set out by Commission Regulation (EU) 2019/1871 for nitrofurans and their metabolites ...
European Food Safety Authority (EFSA) +3 more
doaj +1 more source