Tag: M.W=150-200

Magnotti, Gina M. published the artcileAssessing fuel property effects on cavitation and erosion propensity using a computational fuel screening tool, Name: Methyl decanoate, the main research area is computational fuel screening tool erosion propensity.

To advance compression ignition combustion strategies, researchers have evaluated fuel property effects and their impact on achieving higher efficiencies and lower emissions levels relative to current capabilities. Within the Department of Energy′s Co-Optima initiative, there has been a recent focus on understanding the influence of fuel properties on fuel injection performance. To help identify candidate fuels that can meet desired injector performance metrics, a computational fuel screening tool is under development that can link fuel properties with the tendency of a given fuel to cavitate and lead to cavitationinduced erosion. In the initial development of this tool, five liquid fuel properties were selected to represent candidate fuels, namely, d., viscosity, vapor pressure, surface tension, and heat of vaporization. A design of experiments methodol. was used to generate a set of pseudofuel cases, which can represent the main effects and interactions among the fuel properties and be related to cavitation erosion predictions. Large eddy simulations were performed using a mixture modeling approach to predict the cavitation and erosion propensity of these pseudofuels in terms of the mean fuel vapor mole fraction and stored impact energy from repeated cloud collapse events. The low-order regression models generated from this study revealed the importance of liquid fuel d. on cavitation formation, whereas liquid viscosity was found to have a strong neg. correlation with erosion severity. The surrogate models were then used in the fuel screening tool to rank the cavitation and erosion tendency of four candidate single-component fuels: Me decanoate, iso-octane, ethanol, and n-dodecane. While the fuel screening tool was not able to quant. predict the cavitation and erosion response metrics, the tool was able to accurately rank the relative cavitation and erosion propensity of the four fuels. Overall, ethanol and iso-octane were observed to produce the highest levels of cavitation and erosion, resp.

Journal of Engineering for Gas Turbines and Power published new progress about Cavitation. 110-42-9 belongs to class esters-buliding-blocks, name is Methyl decanoate, and the molecular formula is C11H22O2, Name: Methyl decanoate.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Roberts, Rebecca E. published the artcileOdorant receptor orthologues in conifer-feeding beetles display conserved responses to ecologically relevant odors, Application In Synthesis of 140-11-4, the main research area is conifer feeding beetle odor odorant receptor response; Coleoptera; Curculionidae; HEK293 cells; de-orphanization; evolutionary conservation; functional characterization.

Insects are able to detect a plethora of olfactory cues using a divergent family of odorant receptors (ORs). Despite the divergent nature of this family, related species frequently express several evolutionarily conserved OR orthologues. In the largest order of insects, Coleoptera, it remains unknown whether OR orthologues have conserved or divergent functions in different species. Using HEK293 cells, we addressed this question through functional characterization of two groups of OR orthologues in three species of the Curculionidae (weevil) family, the conifer-feeding bark beetles Ips typographus L. (“”Ityp””) and Dendroctonus ponderosae Hopkins (“”Dpon””) (Scolytinae), and the pine weevil Hylobius abietis L. (“”Habi””; Molytinae). The ORs of H. abietis were annotated from antennal transcriptomes. The results show highly conserved response specificities, with one group of orthologues (HabiOR3/DponOR8/ItypOR6) responding exclusively to 2-phenylethanol (2-PE), and the other group (HabiOR4/DponOR9/ItypOR5) responding to angiosperm green leaf volatiles (GLVs). Both groups of orthologues belong to the coleopteran OR subfamily 2B, and share a common ancestor with OR5 in the cerambycid Megacyllene caryae, also tuned to 2-PE, suggesting a shared evolutionary history of 2-PE receptors across two beetle superfamilies. The detected compounds are ecol. relevant for conifer-feeding curculionids, and are probably linked to fitness, with GLVs being used to avoid angiosperm nonhost plants, and 2-PE being important for intraspecific communication and/or playing a putative role in beetle-microbe symbioses. To our knowledge, this study is the first to reveal evolutionary conservation of OR functions across several beetle species and hence sheds new light on the functional evolution of insect ORs.

Molecular Ecology published new progress about Coleoptera. 140-11-4 belongs to class esters-buliding-blocks, name is Benzyl acetate, and the molecular formula is C9H10O2, Application In Synthesis of 140-11-4.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Matrisciano, Andrea published the artcileAn a priori thermodynamic data analysis based chemical lumping method for the reduction of large and multi-component chemical kinetic mechanisms, Category: esters-buliding-blocks, the main research area is decane methylnaphthalene combustion mechanism kinetics.

A chem. species lumping approach for reduction of large hydrocarbons and oxygenated fuels is presented. The methodol. is based on an a priori anal. of the Gibbs free energy of the isomer species which is then used as main criteria for the evaluation of lumped group. Isomers with similar Gibbs free energy are lumped assuming they present equal concentrations when applied to standard reactor conditions. Unlike several lumping approaches found in literature, no calculation results from the primary mechanism have been employed prior to the application of our chem. lumping strategy. An 807 species and 7807 individual reactions detailed mechanism comprising n-decane, α-methylnaphthalene and Me decanoate has been used. The thermodn. data have been analyzed and 74 isomer groups have been identified within the oxidation of n-decane and Me decanoate. The mechanism reduction has led to a mechanism size of 463 species and 7600 reactions. Thereafter the lumped mechanism has been checked under several reactor conditions and over a broad range of temperature, pressure, and equivalence ratio in order to quantify the accuracy of the proposed approach. In all cases, very good agreement between the predictions obtained using the lumped and the detailed mechanism has been observed with an overall absolute error below 12%. Effects of the lumping procedure on sensitivities and on isomer concentrations were considered to further demonstrate the validity of the proposed approach.

International Journal of Chemical Kinetics published new progress about Combustion. 110-42-9 belongs to class esters-buliding-blocks, name is Methyl decanoate, and the molecular formula is C11H22O2, Category: esters-buliding-blocks.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Fang, Jun published the artcileSooting tendency analysis of oxygenate-diesel blended fuels by the affecting indicators of carbon number, oxygen content and H/C ratio, Product Details of C11H22O2, the main research area is oxygenate diesel blended fuel sooting tendency analysis.

This study exptl. assessed the sooting tendencies of the diesel fuel blended with typical oxygenated additives. Based on the known influential factors of oxygenated functional group, oxygen content, carbon number, and saturation degree, the functional numbers of carbon and oxygen atoms of the mols. were determined by considering the actual bonding ratio of carbon and oxygen producing CO and CO2 during the combustion of blends. The affecting indicators along with a calculation algorithm were proposed, taking into account the actual effect of each factor on sooting tendency. So-called indicators were termed the affecting oxygen content, carbon number and H/C ratio. Normalized Oxygen Extended Sooting Index (OESI) values incorporating the smoke point values were established to decrease with increasing blending percentage of the oxygenated additives in blends, following an exponential fitting relationship. The resulting exponents quantified the soot inhibition ability of the oxygenated additives, which decreased in the order: ethanol (EA) > n-butanol (NBA) > Me tertiary-Bu ether (MTBE) > dimethoxy methane (DMM) > Me decanoate (MD) > Me butanoate (MB) > di-Bu maleate (DBM) > di-Me carbonate (DMC). A combination of the absolute affecting indicator values generated by the suggested algorithm and their relative weights obtained by Relative Weight Anal. (RWA) could interpret the sooting tendency of most of the blended fuels very well. It was found that the sooting tendency was mainly determined by the absolute values of the affecting indicators, and the priority should follow the results by RWA, that decreased in the order of affecting carbon number > affecting oxygen content > affecting H/C ratio. This study could benefit the evaluation of the sooting tendency of the oxygenate-diesel blended fuels.

Fuel published new progress about Combustion. 110-42-9 belongs to class esters-buliding-blocks, name is Methyl decanoate, and the molecular formula is C11H22O2, Product Details of C11H22O2.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Gonzalez-Rodriguez, Jorge published the artcilePolymeric ionic liquids derived from L-valine for the preparation of highly selective silica-supported stationary phases in gas chromatography, SDS of cas: 110-42-9, the main research area is valine polymeric ionic liquid silica gas chromatog stationary phase; cross-linked stationary phases; gas chromatography; ionic liquids; solvation parameter model.

A series of silica-supported polymeric ionic liquid (PIL)-based stationary phases derived from a vinylic L-valine ionic liquid monomer and divinylbenzene (DVB) as the crosslinking agent have been prepared and studied as gas chromatog. stationary phases. These coated gas chromatog. columns exhibited good thermal stabilities (230-300 °C) and high efficiencies (1700-2700 plates/m), and were characterized using a linear solvation parameter model in order to understand the effects of the amount of DVB on the features of the resulting composite systems. Their retention behavior and separation efficiencies were demonstrated using the Grob test. By tuning the crosslinking degree for the IL-derived stationary phase, the separation selectivity and resolution of different compounds were improved. The different retention behaviors observed for many analytes indicate that these stationary phases may be applicable as new types of GC stationary phases.

Polymers (Basel, Switzerland) published new progress about Composites. 110-42-9 belongs to class esters-buliding-blocks, name is Methyl decanoate, and the molecular formula is C11H22O2, SDS of cas: 110-42-9.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Muto, Antonella published the artcileFruit volatilome profiling through GC x GC-ToF-MS and gene expression analyses reveal differences amongst peach cultivars in their response to cold storage, Application of Methyl octanoate, the main research area is Prunus fruit volatilome cold storage gene expression.

Abstract: Peaches have a short shelf life and require chilling during storage and transport. Peach aroma is important for consumer preference and determined by underlying metabolic pathways and gene expression. Differences in aroma (profiles of volatile organic compounds, VOCs) have been widely reported across cultivars and in response to cold storage. However, few studies used intact peaches, or used equilibrium sampling methods subject to saturation We analyzed VOC profiles using TD-GC x GC-ToF-MS and expression of 12 key VOC pathway genes of intact fruit from six cultivars (three peaches, three nectarines) before and after storage at 1 °C for 7 days including 36 h shelf life storage at 20 °C. Two dimensional GC (GC x GC) significantly enhances discrimination of thermal desorption gas chromatog. time-of-flight mass spectrometry (TD-GC-ToF-MS) and detected a total of 115 VOCs. A subset of 15 VOCs from anal. with Random Forest discriminated between cultivars. Another 16 VOCs correlated strongly with expression profiles of eleven key genes in the lipoxygenase pathway, and both expression profiles and VOCs discriminated amongst cultivars, peach vs. nectarines and between treatments. The cultivar-specific response to cold storage underlines the need to understand more fully the genetic basis for VOC changes across cultivars.

Scientific Reports published new progress about Desorption. 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, Application of Methyl octanoate.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Liu, Yanhong published the artcileMicroencapsulation of Osmanthus essential oil by interfacial polymerization: Optimization, characterization, release kinetics, and storage stability of essential oil from microcapsules, SDS of cas: 140-11-4, the main research area is Osmanthus essential oil interfacial polymerization elasticity gamma decanolide; Osmanthus essential oil; interfacial polymerization; microencapsulation; polyurea membrane; release kinetics; storage stability.

In this paper, the interface polymerization method was used to prepare Osmanthus essential oil microcapsules. The optimal preparation process of Osmanthus essential oil microcapsules was explored as follows: the dosage ratio of Osmanthus essential oil to N100 was 6:1, the reaction temperature was 70°C, and the reaction time was 2 h. The encapsulation efficiency of Osmanthus essential oil microcapsules could reach 80.31%. The particle size distribution, morphol., chem. structure, and thermal stability of the obtained microcapsules were characterized by laser particle size analyzer, SEM, Fourier transform IR spectroscopy, and thermogravimetric anal. The release kinetics and storage stability experiments of the microcapsules were studied. The results showed that the average volume diameter of the microcapsules was 101.2 μm. The microcapsules were in the shape of full spheres, with a smooth surface, low viscosity, and high elasticity. Microencapsulation improved the thermal stability of Osmanthus essential oil and promoted the slow release of essential oil. The synthesized microcapsules showed good storage stability under refrigerated and dark conditions, which indicated that microcapsules had broad application prospects in food, medicine, and other fields. Practical Application : In this study, we prepared a polyurea membrane to encapsulate Osmanthus essential oil microcapsules by interfacial polymerization The encapsulation conditions of the microcapsules were optimized and the structure of the microcapsules was characterized in this study. The results showed that microcapsules had a full spherical shape with a smooth surface, high elasticity, good sustained-release ability, good thermal stability, and storage stability. These properties indicated that microcapsules have good application prospects and can be used as a high-quality flavor with a long residual effect and high thermal stability for food and cosmetic scope.

Journal of Food Science published new progress about Elasticity. 140-11-4 belongs to class esters-buliding-blocks, name is Benzyl acetate, and the molecular formula is C9H10O2, SDS of cas: 140-11-4.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Ma, Pan published the artcileMARS 2: A computational tool to resolve and extract features from large-scale GC-MS datasets, Related Products of esters-buliding-blocks, the main research area is MARS computational tool resolve extract GC MS dataset.

MARS (MS-Assisted Resolution of Signal) is a computational tool for feature extraction using multivariate curve resolution approaches. However, it is time-consuming for large-scale GC-MS datasets and sensitive to the component number estimation Here we introduce MARS 2 with substantial improvements to overcome these limitations. Reverse matching (RM) and principal component optimization-iterative transformation target factor anal. (PCO-ITTFA) are developed to reduce the time for locating peak regions and determine the correct component number for resolving optimal features. The greatest strength of MARS 2 is “”resolve once, extract anywhere””. It means that mass spectra of each component were needed to resolve from only one profile. Then, chromatog. features can be extracted automatically from hundreds of other profiles with the assistance from the resolved mass spectra. To evaluate its performance, plasma datasets and fatty acid standard mixtures were processed by MARS 2, AMDIS, ADAP-GC 3.0, eRah and MS-DIAL. Amino acid standard mixtures were analyzed by MARS 2 for calibration. Results show that MARS 2 can achieve better performance in both qual. and quant. anal.

Chemometrics and Intelligent Laboratory Systems published new progress about Extraction. 110-42-9 belongs to class esters-buliding-blocks, name is Methyl decanoate, and the molecular formula is C11H22O2, Related Products of esters-buliding-blocks.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Ma, Pan published the artcileMARS 2: A computational tool to resolve and extract features from large-scale GC-MS datasets, Application of Methyl octanoate, the main research area is MARS computational tool resolve extract GC MS dataset.

MARS (MS-Assisted Resolution of Signal) is a computational tool for feature extraction using multivariate curve resolution approaches. However, it is time-consuming for large-scale GC-MS datasets and sensitive to the component number estimation Here we introduce MARS 2 with substantial improvements to overcome these limitations. Reverse matching (RM) and principal component optimization-iterative transformation target factor anal. (PCO-ITTFA) are developed to reduce the time for locating peak regions and determine the correct component number for resolving optimal features. The greatest strength of MARS 2 is “”resolve once, extract anywhere””. It means that mass spectra of each component were needed to resolve from only one profile. Then, chromatog. features can be extracted automatically from hundreds of other profiles with the assistance from the resolved mass spectra. To evaluate its performance, plasma datasets and fatty acid standard mixtures were processed by MARS 2, AMDIS, ADAP-GC 3.0, eRah and MS-DIAL. Amino acid standard mixtures were analyzed by MARS 2 for calibration. Results show that MARS 2 can achieve better performance in both qual. and quant. anal.

Chemometrics and Intelligent Laboratory Systems published new progress about Extraction. 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, Application of Methyl octanoate.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Braun, Norbert A. published the artcileJasminum grandiflorum: Influence of Flower Processing and Geographic Origin on Flower Absolute Composition, Product Details of C9H10O2, the main research area is Jasminum grandiflorum flower absolute composition geog origin processing.

Five Jasminum grandiflorum flower absolutes harvested as flower buds and processed in the ”J. sambac-way” in different locations in the southern Indian state of Tamil Nadu were analyzed using gas chromatog. (GC) and GC-mass spectrometry. These absolutes were compared with 5 com. Indian J. grandiflorum flower absolutes manufactured in the traditional ”J. grandiflorum-way” from open flowers. Focus was placed on 42 key ingredients to investigate the influence of such a flower processing on the absolute composition Our study established olfactive and composition differences of such absolutes produced via the ”J. sambac-way”. In addition, geog. variations in this species were analyzed by comparing 5 com. Indian J. grandiflorum flower absolutes with absolutes from Egypt and Morocco, resp. A composition range of the absolutes was established for the 3 main J. grandiflorum flower grower countries using a total of 14 com. samples. The 12 main ingredients in the absolutes showed variations between 4.3% and 89.7%.

Natural Product Communications published new progress about Extraction. 140-11-4 belongs to class esters-buliding-blocks, name is Benzyl acetate, and the molecular formula is C9H10O2, Product Details of C9H10O2.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics