Month: April 2021

Electric Literature of 941-37-7, Catalysts allow a reaction to proceed via a pathway that has a lower activation energy than the uncatalyzed reaction. 941-37-7, Name is 1-Bromo-3,5-dimethyladamantane, SMILES is CC1(C2)CC3(C)CC2(Br)CC(C3)C1, belongs to bromides-buliding-blocks compound. In a article, author is Zhang, Siqian, introduce new discover of the category.

MgFeAl layered double hydroxide prepared from recycled industrial solid wastes for CO2 fixation by cycloaddition to epoxides

MgFeAl trimetallic layered double hydroxide (LDH) was prepared using industrial solid wastes of red mud and ferronickel slag, and exfoliation of the LDH by acetone washing resulted in a final product with high surface area (319 m(2)/g). It showed a CO2 adsorption capacity of 70.2 mg/g at 298 K and 1 bar, which was somewhat higher than that of a similar LDH synthesized using pure chemicals (63.8 mg/g). The LDH was tested as a catalyst for solvent-free CO2 cycloaddition to various epoxides. Significant conversion of epoxides and high selectivity to the corresponding cyclic carbonates were obtained under mild reaction conditions. The LDH achieved an excellent result of 98.0% conversion of epichlorohydrin and 98.2% selectivity to the cyclic carbonate in the presence of tetrabutylammonium bromide as co-catalyst at 50 degrees C and 5 bar after 7 h, catalyzed by the combination of Lewis acidic metal sites and bromide ions. The LDH was recovered after the reaction and maintained good catalytic performances after five repeated runs without any significant loss in catalytic activity. This work demonstrated that effective CO2 capture/utilization could be achieved simultaneously using a porous material easily prepared from industrial wastes.

Electric Literature of 941-37-7, Each elementary reaction can be described in terms of its molecularity, the number of molecules that collide in that step. The slowest step in a reaction mechanism is the rate-determining step.you can also check out more blogs about 941-37-7.

Related Products of 539-74-2, Catalysts allow a reaction to proceed via a pathway that has a lower activation energy than the uncatalyzed reaction. 539-74-2, Name is Ethyl 3-bromopropanoate, SMILES is CCOC(=O)CCBr, belongs to bromides-buliding-blocks compound. In a article, author is Lin, Chieh-Ting, introduce new discover of the category.

Origin of Open-Circuit Voltage Enhancements in Planar Perovskite Solar Cells Induced by Addition of Bulky Organic Cations

The origin of performance enhancements in p-i-n perovskite solar cells (PSCs) when incorporating low concentrations of the bulky cation 1-naphthylmethylamine (NMA) are discussed. A 0.25 vol % addition of NMA increases the open circuit voltage (V-oc) of methylammonium lead iodide (MAPbI(3)) PSCs from 1.06 to 1.16 V and their power conversion efficiency (PCE) from 18.7% to 20.1%. X-ray photoelectron spectroscopy and low energy ion scattering data show NMA is located at grain surfaces, not the bulk. Scanning electron microscopy shows combining NMA addition with solvent assisted annealing creates large grains that span the active layer. Steady state and transient photoluminescence data show NMA suppresses non-radiative recombination resulting from charge trapping, consistent with passivation of grain surfaces. Increasing the NMA concentration reduces device short-circuit current density and PCE, also suppressing photoluminescence quenching at charge transport layers. Both V-oc and PCE enhancements are observed when bulky cations (phenyl(ethyl/methyl)ammonium) are incorporated, but not smaller cations (Cs/MA)-indicating size is a key parameter. Finally, it demonstrates that NMA also enhances mixed iodide/bromide wide bandgap PSCs (V-oc of 1.22 V with a 1.68 eV bandgap). The results demonstrate a facile approach to maximizing V-oc and provide insights into morphological control and charge carrier dynamics induced by bulky cations in PSCs.

Related Products of 539-74-2, Each elementary reaction can be described in terms of its molecularity, the number of molecules that collide in that step. The slowest step in a reaction mechanism is the rate-determining step.you can also check out more blogs about 539-74-2.

Children learn through play, and they learn more than adults might expect. Science experiments are a great way to spark their curiosity, SDS of cas: 3958-60-93958-60-9, Name is 1-(Bromomethyl)-2-nitrobenzene, SMILES is C1=CC=CC(=C1CBr)[N+](=O)[O-], belongs to bromides-buliding-blocks compound. In a article, author is Han, Khin Wah Wah, introduce new discover of the category.

Benzyl Isothiocyanate Induces Apoptosis via Reactive Oxygen Species-Initiated Mitochondrial Dysfunction and DR4 and DR5 Death Receptor Activation in Gastric Adenocarcinoma Cells

Benzyl isothiocyanate (BITC) is known to inhibit the metastasis of gastric cancer cells but further studies are needed to confirm its chemotherapeutic potential against gastric cancer. In this study, we observed cell shrinkage and morphological changes in one of the gastric adenocarcinoma cell lines, the AGS cells, after BITC treatment. We performed 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2H-tetrazolium bromide (MTT) assay, a cell viability assay, and found that BITC decreased AGS cell viability. Reactive oxygen species (ROS) analyses using 2 ‘,7 ‘-dichlorofluorescin diacetate (DCFDA) revealed that BITC-induced cell death involved intracellular ROS production, which resulted in mitochondrial dysfunction. Additionally, cell viability was partially restored when BITC-treated AGS cells were preincubated with glutathione (GSH). Western blotting indicated that BITC regulated the expressions of the mitochondria-mediated apoptosis signaling molecules, B-cell lymphoma 2 (Bcl-2), Bcl-2-associated X protein (Bax), and cytochrome c (Cyt c). In addition, BITC increased death receptor DR5 expression, and activated the cysteine-aspartic proteases (caspases) cascade. Overall, our results showed that BITC triggers apoptosis in AGS cells via the apoptotic pathways involved in ROS-promoted mitochondrial dysfunction and death receptor activation.

Note that a catalyst decreases the activation energy for both the forward and the reverse reactions and hence accelerates both the forward and the reverse reactions. you can also check out more blogs about 3958-60-9. SDS of cas: 3958-60-9.

Children learn through play, and they learn more than adults might expect. Science experiments are a great way to spark their curiosity, Formula: C15H34BrN1119-94-4, Name is Dodecyl trimethyl ammonium bromide, SMILES is CCCCCCCCCCCC[N+](C)(C)C.[Br-], belongs to bromides-buliding-blocks compound. In a article, author is Khowdiary, M. M., introduce new discover of the category.

Synthesis and evaluation of novel corrosion inhibitors utilized from the recycling of polyethylene terephthalate polymer: Gravimetric, electrochemical, quantum chemical modeling, and molecular docking studies

Herein, glycolysis reaction was performed for managing of disposed polyethylene terephthalate (PET) using various molecular weight grades of polyethylene glycol. The glycolyzed-PET intermediates were converted into their active bromide derivatives throughout the interaction by bromoacetic acid. The active bromide derivatives were reacted by pyridine to yield the cationic bromide compounds. Assemblies of the finally produced compounds were chemically recognized by spectroscopic determination (FTIR, H-1 NMR). The glycolyzed PET compounds functionalized by cationic quaternary groups were assessed for their anticorrosive properties and the protection of pipelines in oilfields against deterioration. The composites were assessed at different concentrations in a simulant medium of the oil wells (0.5 M H2SO4). Furthermore, the bacterial potencies of the organized composites were assessed in contradiction of diverse bacteria’s strains using minimum inhibition concentration (MIC) evaluation. The results of mass decline and electro-chemical evaluations on carbon steel revealed that the products are exhibited excellent anticorrosive and antimicrobial efficiencies. (C) 2020 Elsevier B.V. All rights reserved.

Note that a catalyst decreases the activation energy for both the forward and the reverse reactions and hence accelerates both the forward and the reverse reactions. you can also check out more blogs about 1119-94-4. Formula: C15H34BrN.

Chemistry, like all the natural sciences, begins with the direct observation of nature¡ª in this case, of matter.91-13-4, Name is 1,2-Bis(bromomethyl)benzene, SMILES is BrCC1=CC=CC=C1CBr, belongs to bromides-buliding-blocks compound. In a document, author is Hassan, Asaad F., introduce the new discover, Product Details of 91-13-4.

Enhanced adsorption of chromium(VI) from aqueous medium by basic nanohydroxyapatite/chitosan composite based on egg shell

Four solid adsorbents namely nanohydroxyapatite (NP), cetyltrimethyl ammonium bromide modified nanohydroxyapatite (NPB), and nanohydroxyapatite/chitosan composite either in acidic (NPS1) or basic media (NPS2) were prepared based on egg shell as a biosource. Solid materials were characterized by N-2 adsorption/desorption isotherms, scanning electron microscopy, X-ray diffraction, transmission electron microscopy, Fourier transform infrared spectroscopy, and point of zero charges. The thermal, textural, and chemical properties of nanohydroxyapatite/chitosan composite prepared in basic medium were found to be more enhanced than the other three solid adsorbents with surface area and pore radius of 152.5 m(2)/g and 5.11 nm, respectively. pH(PZC) for all the prepared solid samples ranged between 6.8 and 7.5. Adsorption of hexavalent chromium were studied under different application condition such as the effect of adsorbent dosage, time, pH, initial Cr(VI) concentration, and temperature. The maximum adsorption capacities of chromium onto NP, NPS1, NPS2, and NPB (119.047, 131.578, 134.048, and 85.397 mg/g, respectively) were observed at pH 6. Thermodynamic and kinetic parameters proved that adsorption of Cr(VI) onto all the investigated solid adsorbents follow pseudo-second-order kinetic model, spontaneous, and endothermic adsorption process.

The proportionality constant is the rate constant for the particular unimolecular reaction. the reaction rate is directly proportional to the concentration of the reactant. I hope my blog about 91-13-4 is helpful to your research. Product Details of 91-13-4.

Chemistry can be defined as the study of matter and the changes it undergoes. You¡¯ll sometimes hear it called the central science because it is the connection between physics and all the other sciences, starting with biology. 392-83-6, Name is 2-Bromobenzotrifluoride, molecular formula is , belongs to bromides-buliding-blocks compound. In a document, author is Li, Xiaoquan, Name: 2-Bromobenzotrifluoride.

lncRNA CASC2 inhibits lipopolysaccharide-induced acute lung injury via miR-27b/TAB2 axis

Long non-coding RNA (lncRNA) cancer susceptibility candidate 2 (CASC2) has been reported to exert an important role in acute lung injury (ALI). The present study aimed to investigate the potential underlying mechanism of CASC2 in ALI progression. Reverse transcription-quantitative PCR was conducted to examine the expression of CASC2, microRNA (miR/miRNA)-27b and TGF-beta activated kinase 1 and MAP3K7-binding protein 2 (TAB2) in A549 cells. Cell viability and apoptosis were analyzed using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay and flow cytometry. Enzyme-linked immunosorbent assay was used to measure the levels of inflammatory-related cytokines to assess the inflammatory response, including interleukin-1 beta (IL-1 beta), IL-6 and tumor necrosis factor alpha (TNF-alpha). The binding sites of miR-27b in CASC2 or TAB2 were predicted using LncBase or microT-CDS software, following which dual-luciferase reporter and RNA binding protein immunoprecipitation assays were performed to confirm the target relationship between miR-27b and CASC2 or TAB2. The protein expression of TAB2 was detected by western blotting. The decreased viability, and increased apoptosis and inflammatory responses were attenuated by the accumulation of CASC2 in lipopolysaccharide (LPS)-stimulated A549 cells. CASC2 could directly bind to miR-27b in A549 cells. CASC2 protected A549 cells from LPS-triggered injury by downregulating miR-27b. TAB2 was a target of miR-27b in A549 cells. The influence of miR-27b depletion was reversed by the silencing of TAB2 in an ALI cell model. CASC2 could increase the expression of TAB2 by serving as a competing endogenous RNA of miR-27b in A549 cells. Collectively, the results suggested that CASC2 attenuated LPS-induced injury in the ALI cell model by modulating the miR-27b/TAB2 axis.

Sometimes chemists are able to propose two or more mechanisms that are consistent with the available data. If a proposed mechanism predicts the wrong experimental rate law, however, the mechanism must be incorrect.Welcome to check out more blogs about 392-83-6, in my other articles. Name: 2-Bromobenzotrifluoride.

Application of 1575-37-7, Chemo-enzymatic cascade processes are invaluable due to their ability to rapidly construct high-value products from available feedstock chemicals in a one-pot relay manner. 1575-37-7, Name is 4-Bromobenzene-1,2-diamine, SMILES is NC1=CC=C(Br)C=C1N, belongs to bromides-buliding-blocks compound. In a article, author is Piri, Fatemeh, introduce new discover of the category.

Synthesis of copper oxide quantum dots: effect of surface modifiers

Copper oxide quantum dots were synthesized via precipitation process. Different surface modifiers (SMs) such as polyvinylpyrrolidone (PVP), Polyethylene glycol sorbitan monooleate (Tween 80) and Cetyltrimethylammonium bromide (CTAB) were used for modification of the size and shape of CuO nanoparticles. The effects of some parameters such as the type of surface modifiers on the band gap, structure and microstructure of samples were investigated. All samples showed quantum confinement behaviors such as band gap widening, the size less than the Bohr radius and the blue-shift of adsorption edge. The change of morphology from rod-like in the presence of Tween-80 to spindle shapes in CTAB one confirmed the strategic role of covering the surface of CuO particles by SMs. Moreover, CuO quantum dots with mean crystallite size of 2.3 nm and band gap of 2?2.5 eV were synthesized successfully. Furthermore, high degree of dispersion belonged to CuO nanoparticle synthesized by CTAB SM due to the maximum zeta potential value (28.1 mV at pH & xfffd;=& xfffd;7.5).

Application of 1575-37-7, Because enzymes can increase reaction rates by enormous factors and tend to be very specific, typically producing only a single product in quantitative yield, they are the focus of active research.you can also check out more blogs about 1575-37-7.

In an article, author is Sohail, Muhammad, once mentioned the application of 3081-61-6, SDS of cas: 3081-61-6, Name is L-Theanine, molecular formula is C7H14N2O3, molecular weight is 174.1977, MDL number is MFCD00059653, category is bromides-buliding-blocks. Now introduce a scientific discovery about this category.

Gatifloxacin-Ionic Surfactant Interactions: Volumetric, Acoustic, Voltammetric, and Spectroscopic Studies

Surfactant systems have been frequently used as pseudomodels for investigating interactions of drugs with biological membranes because of their structural similarities with the latter. This helps to understand complicated yet very important biological processes like diffusion of bioactive moieties through biomembranes. The current study deals with voltammetric and spectroscopic studies to evaluate the interaction of a potential antibacterial drug, gatifloxacin (GTF), with a cationic surfactant, dodecyltrimethylammonium bromide (DTAB), and an anionic surfactant, sodium dodecyl sulfate (SDS), under physiological conditions (phosphate buffer, pH 7.4). For more detailed insight into the GTF-ionic surfactant interactions, density and acoustic data were also recorded and used to calculate several important parameters, namely, apparent molar volume (x278;(V)), isentropic compressibility (K-s), and apparent molar isentropic compressibility (x278;(K)) at T = 298.15, 303.15, 308.15, and 313.15 K. Values for partial molar volume (x278;Vo), partial molar expansivity x278;Eo, specific acoustic impedance (Z), relative association (RA), intermolecular free length (L-f), and sound velocity number (U) were also obtained. The interpretation of the concentration dependence of the above-mentioned quantities using a cosphere overlap model led to a better apprehension of solute-solute and solute-solvent intermolecular interactions present in the investigated system, whereas cyclic voltammetry and ultra violet (UV)-visible spectroscopic studies assisted in predicting the location of adsorbed GTF molecules within the DTAB and SDS micelles.

If you are interested in 3081-61-6, you can contact me at any time and look forward to more communication. SDS of cas: 3081-61-6.

Application of 14660-52-7, Enzymes are biological catalysts that produce large increases in reaction rates and tend to be specific for certain reactants and products. 14660-52-7, Name is Ethyl 5-bromovalerate, SMILES is C(C(OCC)=O)CCCBr, belongs to bromides-buliding-blocks compound. In a article, author is Laajimi, Mahmoud, introduce new discover of the category.

Energy storage system design for large-scale solar PV in Malaysia: technical and environmental assessments

The Paris agreement, signed in 2015, is a commitment by the nations to set targets to reduce greenhouse gases emissions. In line with that, Malaysia is committed to lower its greenhouse gases emissions by 45% by 2030. This target is supported by the massive projects of Large-Scale Solar PV, of which 1 GW will be operating by 2020. However, the peak generation of this huge capacity, which occurs at noon, will not meet the peak electricity demand which occurs in the morning and in the evening, and this issue, in such scale, has not been addressed yet. Besides the direct use of solar generated electricity, storing electricity at the peak generation time and delivering it at the desired time may be the best usage of such intermittent energy. This project aims to design the optimal large-scale storage system for the Malaysian scenario. A comprehensive power system is simulated through HOMER Pro, including various storage technologies in different locations, selected according to the planned Large-Scale Solar capacity, the solar irradiation and the electricity demand. The power system has been sized according to two approaches. In the first approach, the storage is sized to satisfy the night peak demand, which occurs between 8pm and 10pm. In the second approach, the daily average demand is determined, and the storage is sized to satisfy all the demand above this average. The proposed power system is feasible only in five locations under the first approach, and not feasible in all the locations under the second approach. Based on HOMER Pro simulation outcomes, the best energy storage type is the 1 MWh Zinc Bromide flow battery.

Application of 14660-52-7, Consequently, the presence of a catalyst will permit a system to reach equilibrium more quickly, but it has no effect on the position of the equilibrium as reflected in the value of its equilibrium constant.I hope my blog about 14660-52-7 is helpful to your research.

Chemistry is the experimental science by definition. We want to make observations to prove hypothesis. For this purpose, we perform experiments in the lab. , Product Details of 927-58-2, 927-58-2, Name is 4-Bromobutyryl chloride, molecular formula is C4H6BrClO, belongs to bromides-buliding-blocks compound. In a document, author is Viegas, Carla, introduce the new discover.

Cytotoxic effect of filtering respiratory protective devices from the waste sorting industry: is in vitro toxicology useful for risk characterization?

The use of Filtering Respiratory Protective Devices (FRPD) is mandatory in Portugal to protect workers from the waste industry of harmful exposures. Deleterious health effects of exposure to bioburden via inhalation and/or ingestion include respiratory symptoms and nephrotoxicity. Between January and February 2019, 118 FRPD samples were collected in one waste sorting industry and characterized regarding microbial contamination and cytotoxicity, defined as cell metabolic activity, through the MTT colorimetric assay (3-(4,5-dimethylthiazol-2-yl)2,5- diphenyltetrazolium bromide). Cytotoxic effect was classified according to percentage of extinction values with respect to the control group, as follows: absent (>= 90); low (80%-90%, +); medium (60%-79%, ++); and high (below 60%, +++). For 113 samples the MTT assay revealed a cytotoxic effect in A549 cells, of which 81 presented high cytotoxicity. In SK cells, a cytotoxic effect was observed in 56 samples, of which five displayed a high cytotoxic effect. Several moderate (p < 0.05) to strong (p < 0.01) correlations were found between higher bacterial and fungal counts both in interior layers (fungi and bacteria) and in exhalation valves (fungi) of FRPD samples and reduced cell metabolic activity of SK cells. On the basis of the obtained results for the cytotoxic effect of FRPD samples on two different cells lines, it was determined that A549 cells exhibited a cytotoxic effect for a higher number of FRPD, whereas the SK cells model correlated better with the other assessed parameters, namely, bacterial and fungal counts and conditions of FRPD use. Although the results are not conclusive on the most appropriate cell line to assess FRPD cytotoxicity, they reinforce the importance of in vitro toxicology in exposure assessments to determine the cytotoxicity of mixtures of contaminants, for better risk characterization and selection of appropriate risk management measures. Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law. In my other articles, you can also check out more blogs about 927-58-2. Product Details of 927-58-2.