Results 51 to 60 of about 21,340 (260)

An IR study of pure and ion irradiated frozen formamide [PDF]

open access: yes, 2006
Context. The chemical evolution of formamide (HCONH2), a molecule of astrobiological interest that has been tentatively identified in interstellar ices and in cometary coma, has been studied in laboratory under simulated astrophysical conditions such as ion irradiation at low temperature. Aims.
arxiv   +1 more source

INCORPORATION OF SODIUM HYALURONATE AND NYAMPLUNG (Calophylum inophyllum) CAKE EXTRACT TO IMPROVE BIOPLASTIC CHARACTERISTIC

open access: yesBiotropia: The Southeast Asian Journal of Tropical Biology, 2022
The cross-linking agent plays an important role in bioplastic mechanical properties. This study aimed to determine the effect of Sodium Hyaluronate (SoHA) as a synthetic cross-linking agent and the addition of Nyamplung Cake Extract (NCE) as an ...
Rini Umiyati   +3 more
doaj   +1 more source

Prevalence, sensitivity and specificity of antibodies against carbamylated proteins in a monocentric cohort of patients with rheumatoid arthritis and other autoimmune rheumatic diseases [PDF]

open access: yes, 2016
Antibodies against carbamylated proteins (anti-CarP) have been recently identified in the sera of patients with rheumatoid arthritis (RA). The objective of the study was to evaluate the prevalence, sensitivity and specificity of anti-CarP compared to ...
Alessandri, Cristiano   +16 more
core   +1 more source

Characterisation of the Cyanate Inhibited State of Cytochrome c Oxidase [PDF]

open access: yes, 2020
Heme-copper oxygen reductases are terminal respiratory enzymes, catalyzing the reduction of dioxygen to water and the translocation of protons across the membrane. Oxygen consumption is inhibited by various substances.
Dragelj, Jovan   +6 more
core   +1 more source

Carbamoyl phosphate and its substitutes for the uracil synthesis in origins of life scenarios

open access: yesScientific Reports, 2021
The first step of pyrimidine synthesis along the orotate pathway is studied to test the hypothesis of geochemical continuity of protometabolic pathways at the origins of life.
Louis M. P. Ter-Ovanessian   +4 more
doaj   +1 more source

A Study on the Properties of Resin Transfer Molding Cyanate Ester and Its T800 Grade Carbon Fiber Composites [PDF]

open access: yes, 2019
The properties of resin transfer molding (RTM) cyanate ester and its T800 grade carbon fiber composites were studied with the rheometer, differential scanning calorimetry (DSC), FT-IR, dynamic mechanical analyzer (DMA), thermal gravimetric analysis (TGA),
Jun Xiao, Ling Wu, Peijun Ji, Qiuren Ou
core   +2 more sources

Crystal structure of N,N,N′,N′,N′′,N′′-hexamethylguanidinium cyanate 1.5-hydrate

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2015
The title hydrated salt, C7H18N3+·OCN−.1.5H2O, was synthesized starting from N,N,N′,N′,N′′,N′′-hexamethylguanidinium chloride by a twofold anion-exchange reaction.
Ioannis Tiritiris, Willi Kantlehner
doaj   +1 more source

A Needle‐Like H2S‐Releasing and H2O2 Self‐Replenishing Nanoplatform for Enhanced Chemodynamic Tumor Immunotherapy

open access: yesAdvanced Science, EarlyView.
The PTA‐SnS2@GOx cascade nanosystem presents a smart paradigm for cancer theranostics, integrating self‐supplied H2S/H2O2‐augmented chemodynamic therapy (CDT) with sensitized immunotherapy. Its needle‐like SnS2 shell enhances tumor‐specific uptake, ensuring biosafety.
Xiaoxiao Sun   +3 more
wiley   +1 more source

Advances in 3D and 4D Printing of Soft Robotics and Their Applications

open access: yesAdvanced Intelligent Systems, EarlyView.
This article summarizes the development of 3D‐printed soft robotics in the recent decade. The article discusses the printing capabilities of different additive manufacturing technologies in terms of soft polymers, multimaterial printability, soft robotic printing, and 4D printing.
Hao Liu   +5 more
wiley   +1 more source

Decaimento de íons cianato e a formação de carbamato de etila

open access: yesQuímica Nova, 2013
Cyanate ion stability was studied in aqueous/ethanolic solutions, pH = 4.5 (CH3COOH/NaCH3COO), at different temperatures. Following the decay [(OCN)-] versus time, in the presence of excess C2H5OH, the rate constant for this reaction (k1) was calculated ...
Alexandre Ataide da Silva   +2 more
doaj   +1 more source

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