Results 1 to 10 of about 189,010 (320)

Preparation of a Latent Accelerator for Hot Curing of Epoxy Resin and Study of Its Effect on Mechanical Properties of Carbon Fiber Epoxy Composites [PDF]

علوم و تکنولوژی پلیمر, 2023
Hypothesis: Some adducts were prepared from three kinds of DGEBA-based epoxy resins, phthalic anhydride and an alkanol amine accelerator, as a latent accelerator for one-pot epoxy/dicy systems. These adducts come with two kinds of accelerators: DMP-30 A,
Batoul Vasheghani Farahani, Mohammad Hosain Beheshty, Saeid Bazgir   +2 more
doaj   +1 more source

Formation and Identification of a 5-(Hydroxymethyl)-2-Furfural-Zingerone Condensate and Its Cytotoxicity in Caco-2 Cells

Frontiers in Nutrition, 2022
5-(Hydroxymethyl)-2-furfural (HMF), an active furfural, widely exists in various food products and has potential safety risks. It can be eliminated by occurring aldol condensation with α-unsubstituted ketones in the presence of catalysts.
Yujing Ke, Zhao Yin, Nenghua Chen, Peifang Chen, Jie Liu, Shiyi Ou, Guoqiang Li, Guoqiang Li   +7 more
doaj   +1 more source

Synthesis: Molecular Structure, Thermal-Calorimetric and Computational Analyses, of Three New Amine Borane Adducts

Molecules, 2023
Cyclopropylamine borane C3H5NH2BH3 (C3AB), 2-ethyl-1-hexylamine borane CH3(CH2)3CH(C2H5)CH2NH2BH3 (C2C6AB) and didodecylamine borane (C12H25)2NHBH3 ((C12)2AB) are three new amine borane adducts (ABAs).
Kevin Turani-I-Belloto, Rodica Chiriac, François Toche, Eddy Petit, Pascal G. Yot, Johan G. Alauzun, Umit B. Demirci   +6 more
doaj   +1 more source

Long-Range Complex in the HC3N + CN Potential Energy Surface: Ab Initio Calculations and Intermolecular Potential [PDF]

ICCSA 2021. Lecture Notes in Computer Science, vol 12958. Springer, Cham., p. 413-425, 2022
In this work we characterize an initial van der Waals adduct in the potential energy surface of reaction between cyanoacetylene HC3N and the cyano radical. The geometry of the CN-HC3N adduct has been optimized through calculations employing ab initio methods. Results show that the energy of the adduct lays below the reactants.
arxiv   +1 more source

Mechanism of Acrylamide Elimination by Cysteine and Its Application in Potato Chips

Shipin gongye ke-ji, 2022
L-cysteine can significantly reduce the content of acrylamide and form new substances. To clarify the reduction mechanism and apply it in potato chip processing, a high purity cysteine-acrylamide adduct was prepared.
Caihuan HUANG, Dan LI, Chengyan LONG, Jie ZHENG, Qizhou GONG, Juanying OU   +5 more
doaj   +1 more source

A Theoretical Perspective on the Photochemistry of Boron-Nitrogen Lewis Adducts [PDF]

J. Phys. Chem. A 2024, 128, 6, 996-1008, 2023
Boron-Nitrogen (B-N) Lewis adducts form a versatile family of compounds with numerous applications in functional molecules. Despite the growing interest in this family of compounds for optoelectronic applications, little is currently known about their photophysics and photochemistry.
arxiv   +1 more source

Process Conditions in Preparation of MgCl2 Adduct on Crystalline Structure of the Support in ZN Catalyst [PDF]

علوم و تکنولوژی پلیمر, 2010
MgCl2/C2H5OH adducts with constant relative ratio of 1/3 were prepared and kept at 120oC for different lengths of times of 5, 10, 20, 30, 50, 90,120 and 220 h. Then the samples were quenched and analyzed by XRD and BET.
N. Kalteh, M. Nekoomanesh, H. Arabi
doaj   +1 more source

Formation and Identification of Six Amino Acid - Acrylamide Adducts and Their Cytotoxicity Toward Gastrointestinal Cell Lines

Frontiers in Nutrition, 2022
Acrylamide (AA) is a food contaminant, and amino acids are suggested to mitigate its toxicity by forming adducts. The emergence of acrylamide adducts may cause underestimation of acrylamide exposure level as well as trigger new safety problems.
Dan Li, Fangfang Xian, Juanying Ou, Juanying Ou, Kaiyu Jiang, Jie Zheng, Jie Zheng, Shiyi Ou, Shiyi Ou, Fu Liu, Fu Liu, Qinchun Rao, Caihuan Huang, Caihuan Huang   +13 more
doaj   +1 more source

Assessing the Validity of Normalizing Aflatoxin B₁-Lysine Albumin Adduct Biomarker Measurements to Total Serum Albumin Concentration across Multiple Human Population Studies

Toxins, 2022
The assessment of aflatoxin B1 (AFB1) exposure using isotope-dilution liquid chromatography-mass spectrometry (LCMS) of AFB1-lysine adducts in human serum albumin (HSA) has proven to be a highly productive strategy for the biomonitoring of AFB1 exposure.
Joshua W. Smith, Derek K. Ng, Christian S. Alvarez, Patricia A. Egner, Sean M. Burke, Jian-Guo Chen, Thomas W. Kensler, Jill Koshiol, Alvaro Rivera-Andrade, María F. Kroker-Lobos, Manuel Ramírez-Zea, Katherine A. McGlynn, John D. Groopman   +12 more
doaj   +1 more source

Pentapotassium Bis(hydrogenphospate) Dihydrogenphospate Monohydrate

Molbank, 2023
The structure of K5(HPO4)2(H2PO4)·H2O was determined via single crystal diffraction. The crystal structures of phosphate salts of potassium have been known since the early days of crystallography.
Camila Caro Garrido, Tom Leyssens, Koen Robeyns   +2 more
doaj   +1 more source