Iso- - Europe PMC

The role of halogen bonds in the catalytic mechanism of the iso-Nazarov cyclization reaction: a DFT study.

With the continued introduction of halogen bonds, halogen bond donors have been used as clean and effective catalysts in organic reactions. The catalyst ICl 3's ICl 3's initial activity is improved, and it could be expected that the partial covalent bond between the catalyst ICl 3 and the reactant's oxygen atom may have high catalytic activity in the experiments.

Source link: https://europepmc.org/article/MED/35912933

Evaluation of Three ISO Estrogen Receptor Transactivation Assays Applied to 52 Domestic Effluent Samples.

Both ERTAs, L-YES and A-YES, use genetically modified yeast strains, whereas the third uses stably transfected human cells such as ER-U03b1-CALUX, which is based on a genetically modified human bone osteosarcoma cell line, which is based on a genetically modified human bone osteosarcoma cell line. The ERTA findings were correlated and compared to those from chemical analysis focusing on known estrogens. However, threshold reliance to distinguish between acceptable and unacceptable water quality plays a significant role in the analysis and comparison of bioassay results. According to the ERTA used, implementing a simple cross-assay EBT for effluent of 4 ng L -1 resulted in varying amounts of threshold exceedances ranging from zero to four samples. Because of assay-specific variations and as effect-based methods in environmental monitoring, current recommended EBTs do not have similar risk profiles across samples, and further refinement of assay-specific EBTs is required.

Source link: https://europepmc.org/article/MED/35876436

Adaptation of Brucella melitensis Antimicrobial Susceptibility Testing to the ISO 20776 Standard and Validation of the Method.

B. melitensis antimicrobial susceptibility testing results are not available, and the agent is not yet identified in the EUCAST breakpoint tables, and the agent is not yet listed in the EUCAST breakpoint tables. B. melitensis are available, but they do not meet the ISO 20776 requirements regarding the culture medium and the incubation conditions. laboratories specializing in the detection of highly pathogenic bacteria in their respective countries formed a working group within a Joint Action aimed at developing a suitable method for the AST of B. melitensis in the AST.

Source link: https://europepmc.org/article/MED/35889189

A high-performance Ni-CeO 2 /Ni/Ni-Y 2 O 3 ·ZrO 2 three-layer anode for direct iso-octane feeding of solid oxide fuel cells.

Solid oxide fuel cells specifically supplied with iso-octane are expected to be power sources for handheld devices and automobiles. However, conventional anode catalysts nickel or cerium oxide used for direct feeding of isooctane do not reduce carbon deposition or produce high power. The anode includes a Ni-CeO 2 catalyst layer as the top layer, an Ni catalyst layer as the second layer, and a Ni-YSZ catalyst layer as the third layer on top of the electrolyte. The three-layer anode's design is as follows: fuel reforming occurs in the Ni-CeO 2 layer, the reformed H 2 or CO is electrochemically oxidized in the Ni-YSZ catalyst layer, and the Ni catalyst middle layer prevents the reaction between YSZ and CeO 2. In addition, we discuss the fuel reforming reactions on the three-layer electrode as a result of exhaust gas analysis.

Source link: https://europepmc.org/article/MED/35875470

Packed-Fiber Solid Phase-Extraction Coupled with HPLC-MS/MS for Rapid Determination of Lipid Oxidative Damage Biomarker 8-Iso-Prostaglandin F 2α in Urine.

In vivo, the 8-isoprostaglandin F 2u03b1 biomarker is used as the gold standard for tracking lipid oxidative stress. When dealing with trace amounts of 8-iso-PGF 2u03b1 and the complexity of urine matrixes, it is difficult to evaluate urine 8-iso-PGF 2u03b1 and the variability of urine matrixes. The procedure, which simultaneously processed 12 samples within 5 min on a self-made semi-automatic array solid-phase extraction processor, was the first to use PS-electrospun nanofibers as an adsorbent for the extraction of 8-iso-PGF 2u03b1 and was successfully applied to real urine samples.

Source link: https://europepmc.org/article/MED/35889290

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions