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Methyl - Crossref

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Last Updated: 20 April 2022

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Effect of boundary conditions and n -heptane on methyl decanoate HCCI combustion and emission based on two-stroke diesel engine

As the reactor's engine model, a MAN B&W 6S70MC two-stroke diesel engine was used as the reactor's engine model. The NO emissions in the MD and N-Hep HCCI combustion process decrease with increasing initial temperature, according to the study. With an increase in N-Hep percentage in MD and N-Hep mixing combustion, the initial pressure and total mole fraction of fuel, CO 2, NO x reaction rates, and emissions have been reduced dramatically at a particular initial temperature, and NO x reaction rates, and emissions have been reduced dramatically.

Source link: https://doi.org/10.1063/5.0085862


Recovery and Purification of Glycerine as By-product from Philippine Coconut Methyl Ester

The study is about the recovery and purification of glycerine as a by-product of coconut methyl ester manufacturing in the Philippines. The crude glycerine obtained from the laboratory and scale-up process met the British standard for crude glycerine. The average glycerine content of refined glycerine is 96. 86 percent; ash, 0. 6 percent; water, 1. 1 percent; refractive index @ 20°C, 1. 46 g.

Source link: https://doi.org/10.29037/ajstd.559


Sweetpotato tolerance to saflufenacil and rimsulfuron/thifensulfuron-methyl applied pretransplanting

saflufenacil did not reduce the yield of any sweetpotato grade regardless of application rate or timing, according to the nontreated comparison. According to the latest plant-back interval, the original plant-back period may be too long, according to findings from this trial. 1 g ha rimsulfuron/thifensulfurone-methyl mixture at 35/35 g ha – 1 of 3 WBP suffered in significant crop damage but did not reduce yield of any sweetpotato grade. These results indicate that rimsulfuron/thifensulfuron-methyl applications up to 35/35 g ha –1 used at least 6 WBP and 18/18 g ha – 1 applied at least three WBP and 18/18 g ha –1 applied at least 3 WBP on sweetpotato crop growth, and it could be a safe preplant burndown alternative.

Source link: https://doi.org/10.1017/wet.2019.70


Internal dynamics of methyl p -tolyl sulfoxide in the gas phase: Rotational spectroscopy and theoretical studies

Utilizing chirped-pulse Fourier transform microwave spectroscopy in the frequency range of 18 to 26 GHz, a pure rotational spectrum of methyl p-tolyl sulfoxide was investigated. The low energy barrier for the methyl top internal rotation suggests an electron-withdrawing function of the company on the opposite side of the phenyl ring, in comparison to other similarly charged toluenes. The sulfoxide group in MTSO is marginally more twisted relative to two other sulfoxides, methyl phenyl sulfoxide, and methyl 4-nitrophenyl sulfoxide, a minor electron donor in MTSO, although it could be attributed to the modest electron-donating activity of the p-methyl group. The pyramidal inversion in S 1 is quicker than in S 0 and can be used in S 1, indicating that optical excitation to S 1 will ensure a barrier-free inversion.

Source link: https://doi.org/10.1063/5.0083534


Experiment on the Performance and Emission Characteristics of the Blend B25 of Papaya Oil Methyl Ester on a Diesel Engine with Standard and Magnesium Stabilised Zirconia Coated Piston

Thermal barrier coating reduces the rate of heat transfer and maximizes the maximum rate of heat transfer that can be used for complete combustion of fuels. In this paper, a comparison is made between the performance and emission characteristics of the blend B25 of papaya oil methyl ester on a single cylinder diesel engine with standard and magnesium stabilized zirconia coated piston under variable loading conditions ranging from no load to full load, as shown by ANSYS's thermal analysis.

Source link: https://doi.org/10.35940/ijitee.f4048.049620


Early methyl donor deficiency alters cAMP signaling pathway and neurosteroidogenesis in the cerebellum of female rat pups

In 21-day-old rat pups from dams fed a diet deficient in methyl donors during gestation and lactation, early deficiencies of the methyl donors folate and vitamin B12 causes hyperhomocysteinemia and motor dysfunction in the onset of hyperhomocysteinemia and cognitive and motor disorders. In both sexes, the methyl donor deficiency produced a reduced amount of folate and vitamin B12, as well as an increase of homocysteine in Purkinje cells, but the S-adenosylmethione/S-adenosylhomocysteine ratio was reduced only in females. In cerebellar extracts of females only, solely reduced amounts of estradiol and pregnenolone were found. The lower expression levels of the transcriptional factors CREB, phospho-CREB, and SF-1, as the lesser rise of cAMP concentration and the lower level of phospho-PKC in deficient females' cerebellum suggest that neurosteroidogenesis can be triggered by cAMP-mediated signaling pathways associated with LHR activation will be altered. In conclusion, a gestational methyl donor deficiency contributes to cerebellum neurosteroidogenesis in a gender-dependent manner.

Source link: https://doi.org/10.1152/ajpendo.00364.2014


Efficacy of halosulfuron-methyl in the management of Navua sedge ( Cyperus aromaticus ): differential responses of plants with and without established rhizomes

Abstract Navua sedge is a creeping perennial sedge that is particularly abundant in tropical environments and is now affecting many agroecosystems and ecosystems in Pacific Island countries and northern Queensland, Australia. Under glasshouse conditions, halosulfuron-methyl's ability on Navua sedge plants with and without well-established rhizomes was tested. Halosulfuron-methyl was applied to plants with established rhizomes that had been mowed, pre-flowering, and flowering growth stages, while rhizomes without established rhizomes were treated at seedling, pre-flowering, and flowering growth stages. At the mowed, pre-flowering stage, and flowering stages, respectively, a death of 27. 5%, 0%, and 5% was found in rhizomatous Navua sedge, where 75 g ai ha 1 of halosulfuron-methyl was present. When applied to flowering stage in non-rhizomatous plants, 100% mortality in plants treated at seedling and pre-flowering stage was reported and 98% mortality in plants treated at a plant with a 60 g ai haes.

Source link: https://doi.org/10.1017/wet.2022.29


Volatile Constituent Analysis of Wintergreen Essential Oil and Comparison with Synthetic Methyl Salicylate for Authentication

In addition, each of seven commercial wintergreen essential oil samples from Nepal and China was evaluated. The highest extraction yield was 1. 8 percent, with the largest number of compounds identified in natural wintergreen oil being twenty-two. Linalool, phenol, vetispirane, and ethyl salicylate were all present in commercial wintergreen oils both from Nepal and China. The presence of chemicals such as elsholtzia ketone and -dehydroelsholtzia ketone in the China samples indicated a significant difference in wintergreen oil between the two geographical sources. When synthesis is carried out using salicylic acid, dimethyl 2-hydroxyterephthalate is a well-known synthetic marker for wintergreen oil, but when using acetylsalicylic acid as a precursor during synthesis, the synthetic marker was unobtainable. The concentration of dimethyl 2-hydroxyterephthalate increased in the concentration of dimethyl 2-hydroxyterephthalate increased in the sample of wintergreen oil, but minor component concentrations decreased and methyl salicylate remained unchanged.

Source link: https://doi.org/10.3390/plants11081090


Efficient degradation of methyl orange and methylene blue in aqueous solution using a novel Fenton-like catalyst of CuCo-ZIFs

Abstract In this paper, the synthesized CuCo-zeolitic imidazolate framework catalyst was used to degrade methyl orange and methylene blue in water by a unique Fenton-like catalytic reaction. The results revealed that CuCo-ZIF concentrations greatly influenced MO and MB decomposition results. Both MO and MB's degradation reaction was accelerated by the presence of H2 O 2 in both MO and MB. After four times and five times reuse, respectively, the CuCo-ZIF catalyst provided a good recyclability with more than 90% removal of MO and MB.

Source link: https://doi.org/10.1515/gps-2022-0006


Preclinical Therapeutic Assessment of a New Chemotherapeutics [Dichloro(4,4’-Bis(2,2,3,3-Tetrafluoropropoxy) Methyl)-2,2’-Bipryridine) Platinum] in an Orthotopic Patient-Derived Xenograft Model of Triple-Negative Breast Cancers

TFBPC bound to DNA and established DNA crosslinks that resulted in DNA degradation, prompting DNA destruction, leading to DNA replacement through the PARP/Bax/Bcl-2 apoptosis and LC3-related autophagy pathway. In addition, TFBPC's cell line-derived xenograft model CDX of cisplatin-resistant MDA-MB-231 and a patient-derived xenograft PDX model of triple-negative breast cancers TNBCs are among the animal models. In addition, TFBPC-treated xenografts' biopsy specimen showed reduced expressions of P53, Ki-67, and PD-L1 along with increased expression of cleaved caspase 3, indicating that TFBPC therapy was highly effective and resulted in good prognostic results.

Source link: https://doi.org/10.3390/pharmaceutics14040839

* 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

* 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