Results 51 to 60 of about 3,106,336 (388)
Local Static Hold-up in a Rotary Sieved Disc Contactor for a Butyl Acetate-water System
International Journal of Technology, 2016 Considering the importance of liquid static holdup in liquid-liquid extraction columns, a novel experimental approach for predicting the mentioned parameter in a rotary sieved disc contactor has is presented in this research.
Fatemeh Behzad +4 more
doaj +1 more source
Paracetamol extraction tablets: a green technique for teaching of pharmaceutical chemistry
Revista Brasileira de Ensino de Ciência e Tecnologia, 2020 This work presents the evaluation of the chemical vegetable for the extraction of the active ingredient of paracetamol 500 mg tablets, with optimization of the process through the holistic metrics of Green Chemistry. The previous analysis, indicated as a
Juliana Aparecida Bolzan +2 more
doaj +1 more source
The History of Flow Chemistry at Eli Lilly and Company [PDF]
, 2023 Flow chemistry was initially used for speed to early phase material delivery in the development laboratories, scaling up chemical transformations that we would not or could not scale up batch for safety reasons.
Braden, Timothy +13 more
core +2 more sources
Extraterrestrial Photochemistry: Principles and Applications [PDF]
arXiv, 2021 Energetic processing of interstellar ice mantles and planetary atmospheres via photochemistry is a critical mechanism in the extraterrestrial synthesis of prebiotic molecules. Photochemistry is defined as chemical processes initiated by photon-induced electronic excitation, not involving ionization.
arxiv
Three New Ent-Kaurane Diterpenes with Antibacterial Activity from Sigesbeckia orientalis
MoleculesThree novel ent-kaurane diterpenes, namely sigesbeckin A–C (1–3), in conjunction with eight previously identified analogues (4–11), were isolated from Sigesbeckia orientalis. Their chemical structures were resolved through multiple spectroscopic analyses.
Zhong-Shun Zhou +6 more
doaj +1 more source
Probabilistic performance estimators for computational chemistry methods: Systematic Improvement Probability and Ranking Probability Matrix. II. Applications [PDF]
J. Chem. Phys. 152, 164109 (2020), 2020 In the first part of this study (Paper I), we introduced the systematic improvement probability (SIP) as a tool to assess the level of improvement on absolute errors to be expected when switching between two computational chemistry methods. We developed also two indicators based on robust statistics to address the uncertainty of ranking in ...
arxiv +1 more source
Predictive Chemistry Augmented with Text Retrieval [PDF]
arXiv, 2023 This paper focuses on using natural language descriptions to enhance predictive models in the chemistry field. Conventionally, chemoinformatics models are trained with extensive structured data manually extracted from the literature. In this paper, we introduce TextReact, a novel method that directly augments predictive chemistry with texts retrieved ...
arxiv
Prediction uncertainty validation for computational chemists [PDF]
, 2022 Validation of prediction uncertainty (PU) is becoming an essential task for modern computational chemistry. Designed to quantify the reliability of predictions in meteorology, the calibration-sharpness (CS) framework is now widely used to optimize and validate uncertainty-aware machine learning (ML) methods.
arxiv +1 more source
Scientific ReportsIn the current work, luffa was modified with silver nanoparticles to prepare LF/AgNPs adsorbent for the elimination of ketoprofen and reactive yellow 15 (RY15) from aqueous media.
Soheil Tavassoli +5 more
doaj +1 more source
Molecules, 2017 Since solvents of petroleum origin are now strictly regulated worldwide, there is a growing demand for using greener, bio-based and renewable solvents for extraction, purification and formulation of natural and food products.
Edinson Yara-Varón +5 more
doaj +1 more source