Results 71 to 80 of about 56,931 (242)

Composite membranes comprising of polymeric and molecular amines embedded in poly(vinyl alcohol) matrices to facilitate CO2/H2 separation

The Canadian Journal of Chemical Engineering, EarlyView.
Polymeric and molecular amines embedded in hygroscopic matrices to facilitate CO2 transport for CO2/H2 separation. Abstract This work dealt with composite membranes comprising of polyvinylamine (PVAm) and triethylenetetramine (TETA) embedded in poly(vinyl alcohol) (PVA) for CO2/H2 separation via facilitated transport of CO2, where polymeric and ...
Steve Yijie Hu, Kean Wang, Xianshe Feng
wiley   +1 more source

Exploring 3D-QSAR to identify potential small molecule for treating Alzheimer disease: A case study with b-secretase inhibitors [PDF]

Scripta Medica
Background/Aim: One of the most common neurological conditions that results in dementia is Alzheimer disease. The current treatment options for Alzheimer disease include acetylcholinesterase (AChE) and -methyl-D-aspartate (NMDA) inhibitors, but there is ...
More Uttam A., Patel Maitri, Patel Krishna, Patel Harsiddhi, Patel Kruti Y., Jain Neha, Khan Shabeena, Vasandiya Kinjal, Noolvi Malleshappa N., Palkar Mahesh B.   +9 more
doaj   +1 more source

Comparison of Dried Blood Spot Sampling Methods for RNA‐Based Biomarker Measurement in Anti‐Doping

Drug Testing and Analysis, EarlyView.
This study demonstrates that RNA‐based biomarkers of erythropoiesis, ALAS2 and CA1, can be reliably quantified across commonly used DBS sampling matrices, including venous and capillary blood spotted on cellulose cards and the Tasso‐M20 device. ABSTRACT Dried blood spot (DBS) sampling offers logistical advantages, but it remains unexplored whether ...
Jacob Bejder, Corentin Schlechten, Claudia Mumenthaler, Olivier Salamin, Tiia Kuuranne, Thomas Christian Bonne, Jonathan Graae, Henrik Sørensen, Nikolai B. Nordsborg, Nicolas Leuenberger   +9 more
wiley   +1 more source

Quantification of guanidine in environmental samples using benzoin derivatization and LC-MS analysis

MethodsX
The recent discovery of guanidine-dependent riboswitches in many microbes raised interest in the biological function and metabolism of this nitrogen-rich compound.
Richard Gruseck, Marton Palatinszky, Michael Wagner, Thilo Hofmann, Michael Zumstein   +4 more
doaj   +1 more source

The role of Rho GTPases in facial morphogenesis

Developmental Dynamics, EarlyView.
The role of small GTPases, RHOA, RAC1, and CDC42 and pathway mediators is reviewed in the context of embryonic facial development. Lip fusion requires cytoskeletal remodeling during morphogenesis of the facial processes and during lip fusion. Fnm, frontonasal mass; lnp, lateral nasal process; mnp, medial nasal process; mxp, maxillary process; np, nasal
Isra Ibrahim, Joy M. Richman
wiley   +1 more source

Guanidine production by plant homoarginine-6-hydroxylases

eLife
Metabolism and biological functions of the nitrogen-rich compound guanidine have long been neglected. The discovery of four classes of guanidine-sensing riboswitches and two pathways for guanidine degradation in bacteria hint at widespread sources of ...
Dietmar Funck, Malte Sinn, Giuseppe Forlani, Jörg S Hartig   +3 more
doaj   +1 more source

A Mild and Regioselective Ring-Opening of Aziridines with Acid Anhydride Using TBD or PS-TBD as a Catalyst

Molecules, 2015
The ring-opening of N-tosylaziridines with various acid anhydrides catalyzed by 5 mol % of 1,5,7-triazabicyclo[4,4,0]dec-5-ene (TBD) afforded the corresponding β-amino esters in excellent yields under mild reaction conditions. Polymer-supported catalyst,
Satoru Matsukawa, Yasutaka Mouri
doaj   +1 more source

Ion‐Enriched Porous Organic Polymer for Gold Recovery From E‐Waste

EcoEnergy, EarlyView.
A novel ion‐enriched porous organic polymer was designed and synthesized. It exhibits ultrahigh gold adsorption efficiency with capacity up to 1530.9 mg g−1, and also shows selective capture ability towards gold ions in the actual CPU leaching solution, demonstrating its promising potential for gold recovery from actual e‐waste.
Rui Zhang, Yongjun Huang, Yuncheng He, Wenfeng Zhai, Kaige Wu, Jie Zhao, Yan Huang, Dapeng Cao, Shitao Wang   +8 more
wiley   +1 more source

Synthesis of rigidified flavin–guanidinium ion conjugates and investigation of their photocatalytic properties

Beilstein Journal of Organic Chemistry, 2009
Flavin chromophores can mediate redox reactions upon irradiation by blue light. In an attempt to increase their catalytic efficacy, flavin derivatives bearing a guanidinium ion as oxoanion binding site were prepared.
Harald Schmaderer, Mouchumi Bhuyan, Burkhard König   +2 more
doaj   +1 more source

A Highly Selective and Sensitive Fluorescent Turn-Off Probe for Cu2+ Based on a Guanidine Derivative

Molecules, 2017
A new highly selective and sensitive fluorescent probe for Cu2+, N-n-butyl-4-(1′-cyclooctene-1′,3′,6′-triazole)-1,8-naphthalimide (L), was synthesized and evaluated. The structure of compound L was characterized via IR, 1H-NMR, 13C-NMR and HRMS.
Fei Ye, Qiong Chai, Xiao-Min Liang, Ming-Qiang Li, Zhi-Qiang Wang, Ying Fu   +5 more
doaj   +1 more source