Results 41 to 50 of about 5,053 (175)

Abrogation of Antitumor Effects of Corynebacterium parvum and BeG by Antimacrophage Agents: Brief Communication [PDF]

open access: yes, 2017
The consistently demonstrable antitumor effect of Corynebacterium parvum and BCG against a 7,12-dimethylbenz[a]anthracene-induced rat fibrosarcoma, growing either as a localized subcutaneous tumor or in ascites form, was abrogated by treatment of rats ...
Keller, R.
core  

Transient Brewster angle reflectometry of spiropyran monolayers [PDF]

open access: yes, 2010
Brewster angle reflectometry has been developed as a tool for determining the absorbance and refractive index changes in molecular monolayers containing spiropyran. The method is sensitive to changes in both the real and imaginary parts of the refractive
Aarts   +42 more
core   +1 more source

Ouabain‐induced hypertension in rats: Mechanisms, variability and translational implications

open access: yesExperimental Physiology, EarlyView.
Abstract Ouabain‐induced hypertension is a multifactorial and condition‐dependent phenomenon involving coordinated actions across vascular, renal and central nervous system pathways. At the vascular level, ouabain inhibits Na⁺/K⁺‐ATPase, particularly the α2‐isoform, leading to elevated intracellular Ca2⁺, enhanced vasoconstriction and structural ...
Priscilla Rodrigues O. Feijó   +1 more
wiley   +1 more source

Synthesis of Polyfunctionalized 4H‐Pyrans [PDF]

open access: yesJournal of Chemistry, 2012
Amberlyst A21 catalyzed one‐pot three‐component coupling of aldehyde and malononitrile with active methylene compounds such as acetylacetone and ethyl acetoacetate for the synthesis of pharmaceutically important polyfunctionalized 4H‐pyrans has been reported. Simple experimental procedure, no chromatographic purification, no hazardous organic solvents,
Manisha Bihani   +2 more
openaire   +2 more sources

Oxetanes: Recent Advances in Synthesis, Reactivity and Medicinal Chemistry [PDF]

open access: yes, 2016
The 4-membered oxetane ring has been increasingly exploited for its behaviors, i.e. influence on physicochemical properties as a stable motif in medicinal chemistry, and propensity to undergo ring opening reactions as a synthetic intermediate.
Bull, JA   +4 more
core   +1 more source

Electronic Smoking Devices Among University Students: Usage Patterns and Chemical Composition of Inhaled Substances

open access: yesAnalytical Science Advances, Volume 7, Issue 1, June 2026.
ABSTRACT This study investigated the prevalence of electronic smoking device (ESD) use and its associated behavioural and chemical risks among university students in Bahia, Brazil. A cross‐sectional survey was conducted with 355 students from public and private institutions through an online questionnaire between April and May 2023. Among participants,
Eduard F. Valenzuela   +7 more
wiley   +1 more source

Silver and platinum-catalysed addition of O–H and N–H bonds to allenes [PDF]

open access: yes, 2014
Transition-metal catalysed nucleophile addition to allenes is a very powerful tool for the synthesis of functionalised molecules containing heteroatoms, heterocycles in the intramolecular version, or allyl derivatives in the intermolecular version.
Munoz-Herranz, Maria
core   +1 more source

Comparative Analysis of Fungal Communities and the Key “Golden‐Flower” Fungi in Fu Brick Tea From Seven Chinese Regions and Their Effects on the Quality of Summer‐Autumn Tea

open access: yesFood Frontiers, Volume 7, Issue 2, March 2026.
This study systematically investigated 52 Fu brick tea (FBT) samples collected from seven representative regions in China. High‐through put sequencing revealed that Aspergillus, Wallemia, and Candida were the predominant fungal genera across the samples.
Lisha Ran   +9 more
wiley   +1 more source

Alginate Oligosaccharides Attenuate Ochratoxin A‐Induced Liver Injury through Regulating the Interaction of Nrf2 and NF‐κB Signaling Pathways

open access: yesFood Frontiers, Volume 7, Issue 2, March 2026.
A schematic illustration for the protective effects of AOS on OTA‐induced liver injury in mice. AOS, alginate oligosaccharides; CAT, catalase; GSTT1, glutathione S‐transferase theta 1; HO‐1, heme oxygenase 1; IκBα, inhibitor kappa B alpha; IL‐1β, interleukin‐1β; IL‐6, interleukin‐6; Keap1, kelch‐like ech‐associated protein 1; NF‐κB, nuclear factor ...
Yue Zhao   +8 more
wiley   +1 more source

Benzothiazole durch C-C-Spaltung von alpha-[(2-Nitrophenyl)thio]ketonen [PDF]

open access: yes, 1984
Einwirkung von Ammoniak bzw. Natronlauge auf die -[(2-Nitrophenyl)thio]ketone 4, 11a-c und 16 führt unter CC-Spaltung zu den Benzothiazol-N-oxid-Derivaten 8, 12ac und 17; aus dem 3-[(2-Nitrophenyl)thio]-4-piperidon-Derivat 22 entsteht der 2 ...
Babichev   +10 more
core   +1 more source

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