Results 41 to 50 of about 38,024 (237)

Contrasting Distributions of Urban Green Infrastructure across Social and Ethno-racial Groups [PDF]

open access: yes, 2018
Links between urban green infrastructure (UGI) and public health benefits are becoming well established. Despite this, how UGI is distributed varies widely.
Dallimer, M   +3 more
core   +1 more source

Assessing urban green infrastructure: A simple and practical measure of its spatial distribution equity and a comprehensive evaluation

open access: yesEcological Indicators
Urban green infrastructure (UGI) that provides diverse ecosystem services are crucial components of a city. Achieving appropriate density and equitable distribution of UGI is highly significant for urban planning to ensure sustainable and high-quality ...
Wei Hou, Xinpeng Li
doaj   +1 more source

A Single‐Enzyme Activated CRISPR‐Cas12a Nano System via Subtly Balanced dsDNA for Kinetic‐Gated UDG Detection and Spatiotemporal Cellular Imaging

open access: yesAdvanced Science, EarlyView.
Kinetic‐gated CRISPR–Cas12a activation enables single‐enzyme detection and spatiotemporal imaging of UDG ABSTRACT Uracil‐DNA glycosylase (UDG) is a key enzyme in base excision repair and an important biomarker for genomic stability and disease. In many reported sensing systems, uracil excision is coupled to signal generation through additional ...
Kejun Dong   +12 more
wiley   +1 more source

Application of heterocyclic aldehydes as components in Ugi–Smiles couplings

open access: yesBeilstein Journal of Organic Chemistry, 2016
Efficient one-pot Ugi–Smiles couplings are reported for the use of furyl-substituted aldehyde components. In the presence of these heterocyclic aldehydes, reactions tolerated variations in amine components and led to either isolated N-arylamide Ugi ...
Katelynn M. Mason   +3 more
doaj   +1 more source

Endoscopic features of cytomegalovirus disease of the upper gastrointestinal tract between transplant and non-transplant patients [PDF]

open access: yesThe Korean Journal of Internal Medicine
Background/Aims Cytomegalovirus (CMV) disease in the upper gastrointestinal (UGI) tract frequently occurs in immunocompromised patients. However, data regarding UGI CMV disease in non-transplant patients compared with those in transplant recipients are ...
Yuri Kim   +10 more
doaj   +1 more source

Damping Rate of a Hard Photon in a Relativistic Plasma [PDF]

open access: yes, 1994
The damping rate of a hard photon in a hot relativistic QED and QCD plasma is calculated using the resummation technique by Braaten and Pisarski.Comment: 4 pages, REVTeX, 2 figures (not included), UGI-MT-94 ...
A. Rebhan   +34 more
core   +2 more sources

Gastrointestinal Manifestations in Rubinstein‐Taybi Syndrome

open access: yesAmerican Journal of Medical Genetics Part A, EarlyView.
ABSTRACT Rubinstein–Taybi syndrome is a rare genetic condition associated with a wide range of physical, cognitive, and developmental impairments, yet its gastrointestinal manifestations remain poorly characterized. Case reports and small series suggest a high prevalence of gastroesophageal reflux, constipation, dysphagia, and nutritional compromise ...
Mohamad Abi Nassif   +3 more
wiley   +1 more source

Ugi Four-Component Reactions Using Alternative Reactants

open access: yesMolecules, 2023
The Ugi four-component reaction (Ugi-4CR) undoubtedly is the most prominent multicomponent reaction (MCRs) that has sparked organic chemists’ interest in the field.
Seyyed Emad Hooshmand, Wei Zhang
doaj   +1 more source

Copper‐ and Silver‐Catalyzed Reactions of Active Methylene Isocyanides: Facile Access to Highly Substituted Five‐ and Six‐Membered Heterocycles

open access: yesChemistry – A European Journal, EarlyView.
This review summarizes recent advances in copper‐ and silver‐catalyzed reactions of active methylene isocyanides for the synthesis of highly substituted five‐ and six‐membered heterocycles. Emphasis is placed on [3+n] cycloadditions, annulations, and asymmetric strategies, highlighting current limitations and future opportunities in heterocycle ...
Jimil George, Kyungsoo Oh
wiley   +1 more source

Diverse Isoquinoline Scaffolds by Ugi/Pomeranz–Fritsch and Ugi/Schlittler–Müller Reactions [PDF]

open access: yesOrganic Letters, 2019
The Pomeranz-Fritsch reaction and its Schlittler-Müller modification were successfully applied in the Ugi postcyclization strategy by using orthogonally protected aminoacetaldehyde diethyl acetal and complementary electron rich building blocks. Several scaffolds, including isoquinolines, carboline, alkaloid-like tetrazole-fused tetracyclic compounds ...
Yuanze Wang   +4 more
openaire   +3 more sources

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