Results 111 to 120 of about 5,784 (223)

A Data Based Perspective on the Environmental Risk Assesssment of Human Pharmaceuticals [PDF]

open access: yes, 2001
The EU Medicinal Products Directive (65/65/EEC) has been amended to require an environmental risk assessment (ERA) for human pharmaceuticals effective January 1995. At present, official ERA guidelines have yet to be finalised.
Webb, Simon Francis
core   +1 more source

Modeling of the formation of short-chain acids in propane flames [PDF]

open access: yesarXiv, 2009
In order to better understand their potential formation in combustion systems, a detailed kinetic mechanism for the formation of short-chain monocarboxylic acids, formic (HCOOH), acetic (CH3COOH), propionic (C2H5COOH) and propenic (C2H3COOH)) acids, has been developed. Simulations of lean (equivalence ratios from 0.9 to 0.48) laminar premixed flames of
arxiv  

Discovery Of Copper Catalyst For New Chemical Polishing Acid On Superconducting Niobium [PDF]

open access: yesarXiv, 2020
High field Q-slope (HFQS) seriously limits the high gradient performance of the buffered chemically polished (BCP) superconducting radio frequency (SRF) niobium cavities. The direct cause or mechanism is not yet fully understood. In our recent extensive data analysis, we concluded that the potential root cause could be nitrogen contamination on the ...
arxiv  

A thermodynamic basis for prebiotic amino acid synthesis and the nature of the first genetic code [PDF]

open access: yes, 2009
Of the twenty amino acids used in proteins, ten were formed in Miller's atmospheric discharge experiments. The two other major proposed sources of prebiotic amino acid synthesis include formation in hydrothermal vents and delivery to Earth via meteorites.
arxiv   +1 more source

Drug-disease Graph: Predicting Adverse Drug Reaction Signals via Graph Neural Network with Clinical Data

open access: yes, 2020
Adverse Drug Reaction (ADR) is a significant public health concern world-wide. Numerous graph-based methods have been applied to biomedical graphs for predicting ADRs in pre-marketing phases. ADR detection in post-market surveillance is no less important
A Bate   +14 more
core   +1 more source

LC/ESI-MS analysis of underivatized amino acids and mass spectrum [PDF]

open access: yesarXiv, 2016
We report the method of LC/ESI-MS analysis of underivatized amino acids with corresponding mass spectrum and fragmentation patterns. Diagnostic product ions determined by mass spectrometry can support the qualitative identification and quantitative estimation of individual amino acids. Therefore, the optimization of chromatographic separation using the
arxiv  

Optimization design and characteristic of retarding and low-early-strength grouting material for capsule grouting technology: laboratory and field evaluation

open access: yesJournal of Materials Research and Technology, 2022
Capsule grouting technology (CGT) is developed to control the deformation of underground structures induced by the adjacent underground construction. Meanwhile, multiple grouting is necessary for CGT to achieve the desired effect as the heterogeneity and
Jianyou Huang   +7 more
doaj  

Correlations of Amino Acids with Secondary Structure Types: Connection with Amino Acid Structure [PDF]

open access: yesarXiv, 2005
The correlations of primary and secondary structures were analyzed using proteins with known structure from Protein Data Bank. The correlation values of amino acid type and the eight secondary structure types at distant position were calculated for distances between -25 and 25.
arxiv  

Studies on Bioactive Heterocycles [PDF]

open access: yes, 2010
Not ...
Savant, Mahesh M.
core  

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