Download full-text PDF |
Source |
|---|
Publication Analysis
Top Keywords
Similar Publications
On the Influence of Additives and Modifiers on the Chiral HPLC Separation of the Enantiomers of Nicotine.
Chirality
February 2025
Daicel Chiral Technologies, West Chester, Pennsylvania, USA.
The influence of additives and modifiers on the chiral HPLC separation of the nicotine enantiomers using UV/Vis detection is discussed. Selected alcohols as modifiers and selected amines as additives were found to have a significant effect on the resolution and retention times of nicotine enantiomers even to the point of eliminating component elution. Systematic variations in the concentration of ethanol, methanol, and isopropanol, as modifiers, along with variations in the concentration of diethylamine, triethylamine, tributylamine, ethylenediamine, isopropylamine, as additives, revealed that the average resolution (R) of the nicotine enantiomers ranged from 2.
View Article and Find Full Text PDFPolymer Ligands with Multi-Nitrogen Heterocyclic Carbenes for Enhanced Stability and Reactivity in Nanoparticle Surface Functionalization.
Angew Chem Int Ed Engl
January 2025
Fudan University, Department of Macromolecular Science, 2205 Songhu Rd, 200438, Shanghai, CHINA.
Nitrogen heterocyclic carbenes (NHCs) are emerging as effective substitutes for conventional thiol ligands in surface functionalization of nanoparticles (NPs), offering exceptional stability to NPs under harsh conditions. However, the highly reactive feature of NHCs limits their use in introducing chemically active groups onto the NP surface. Herein, we develop a general yet robust strategy for the efficient surface functionalization of NPs with copolymer ligands bearing various functional groups.
View Article and Find Full Text PDFIs Hume's Law a valid argument against empirical bioethics?
Bioethics
January 2025
School of Public and Population Health, Institute for Bioethics and Health Humanities, The University of Texas Medical Branch, Galveston, Texas, USA.
If "no ought from is," how can bioethics be empirical? Despite the widespread recognition that we can integrate empirical and normative, Hume's Law is still often claimed to pose logical limitations to empirical bioethics. Is Hume's Law a valid argument against empirical bioethics? I argue that we have reasons to answer no. First, I outline and reject two unverified assumptions: that Hume' s Law, the fact-value distinction, and the naturalistic fallacy are roughly the same thing, and that Hume's Law is an undisputed meta-ethical principle which dictates how to formulate normative statements.
View Article and Find Full Text PDFComparison of conventional coagulation tests and ROTEM in identifying trauma-induced coagulopathy for massive haemorrhage protocol activation.
Transfus Med
January 2025
Department of Pathology and Molecular Medicine, McMaster University, Hamilton, Ontario, Canada.
Objectives: Trauma-induced coagulopathy (TIC) can be fatal but preventable if recognised early. With emerging uses of rotational thromboelastometry (ROTEM) to guide transfusions in trauma, patient outcomes with TIC-defined by initial ROTEM and conventional coagulation tests (CCTs) during massive haemorrhage protocol (MHP) activations were evaluated at a primary trauma centre in British Columbia.
Methods: This retrospective observational study included adult trauma patients requiring MHP from June 1, 2020, to May 31, 2022.
Epilepsy Stands Nearby: A Pilot CT Perfusion Study on Post-Stroke Non-Convulsive Status Epilepticus.
Eur J Neurol
February 2025
IRCCS Istituto delle Scienze Neurologiche di Bologna, Department of Neurology and Stroke Center, Maggiore Hospital, Bologna, Italy.
Background: To investigate the relevance of hyperperfusion on computerised perfusion imaging (CTP) in the emergency setting in people with non-convulsive status epilepticus (NCSE) and previous stroke, to derive relevant aspects on the epileptogenic focus and the network recruited for NCSE propagation.
Methods: We enrolled consecutive adult patients with acute-onset NCSE and a previous stroke at a single institution undergoing CTP and EEG during symptoms. All patients underwent standard imaging including CT, CTP, CT angiograms and standard EEG within 30 min from hospital arrival.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!