Results 91 to 100 of about 10,230 (254)

Osmium-isotope geochemistry of ODP Site 159-959 [PDF]

open access: yes, 1998
Analyses of Re, Os, and Ir concentrations, as well as Os-isotopic compositions, are reported for a suite of sediments from Ocean Drilling Program Site 959.
Gregory E Ravizza (6965528)   +1 more
core   +1 more source

Stage‐Adaptive Janus Microneedle System for Redox‐Immune Regulation and Mitochondrial Protection in Infected Diabetic Wound Healing

open access: yesAdvanced Science, EarlyView.
ABSTRACT Infected diabetic wounds are sustained by a vicious cycle of hyperglycemia‐driven bacterial infection, persistent oxidative stress, and excessive inflammation, which collectively disrupt the ordered progression of tissue repair. Here, we engineered a stage‐adaptive Janus microneedle patch (MN‐FeSAC‐PPE) to enable a staged therapeutic process ...
Mengting Yin   +13 more
wiley   +1 more source

OSMIUM TETROXIDE FIXATION OF LIPIDS: NATURE OF THE REACTION PRODUCTS [PDF]

open access: yes, 1963
To study the possible reaction mechanisms involved in osmium tetroxide fixation as used in electron microscopy, the products were analyzed which result from the interaction of osmium tetroxide and a number of pure substances.
JELLE C. RIEMERSMA
core   +1 more source

A Catalytic Osmium Redox Couple Collapses Cancer Redox Balance

open access: yesAdvanced Science, EarlyView.
A stable Os(III)/Os(IV) redox couple is developed to disrupt the tumor cell redox balance by concurrently catalyzing ROS generation and GSH depletion. Osmium‐treated cells exhibit multiple cell death pathways, including apoptosis, ferroptosis, and immunogenic cell death.
Wan‐Qiong Huang   +9 more
wiley   +1 more source

Interaction of potassium hexahalogenoosmates(IV) with DMSO

open access: yesТонкие химические технологии, 2013
Interaction of К2 [OsX6], where X=Cl, Br ( СOs = n · 10-4 – n · 10-2 mol/l) with DMSO has been studied by electronic absorption spectroscopy at room temperature and heating.
O. V. Rudnitskaya   +2 more
doaj  

Double staining method for array tomography using scanning electron microscopy

open access: yesApplied Microscopy, 2020
Scanning electron microscopy (SEM) plays a central role in analyzing structures by imaging a large area of brain tissue at nanometer scales. A vast amount of data in the large area are required to study structural changes of cellular organelles in a ...
Eunjin Kim   +4 more
doaj   +1 more source

Brown Adipocyte Sheets Alleviate Myocardial Ischemia–Reperfusion Injury Through NRG4–ErbB4–Dependent Ferroptosis Inhibition

open access: yesAdvanced Science, EarlyView.
Brown adipocyte sheets are engineered to protect the heart against myocardial ischemia–reperfusion injury by restraining ferroptosis. Upon transplantation onto the cardiac surface, they improve cardiac function, limit infarction and fibrosis, and enhance angiogenesis.
Lifu Sun   +6 more
wiley   +1 more source

Spectrophotometric Determination of Os(VIII) with Nitroso R Salt as Chromogenic Reagent

open access: yesThe Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science, 2011
Several methods have been reported for the spectrophotometric determination of osmium with various chromogenic reagents. Some of these reagents react slowly with osmium and the conditions for obtaining reproductibile colours are usually empirical.
Rodica WENKERT   +3 more
doaj  

NFYB Integrates Hormonal Signals into Tissue Allometry by Promoting Protein Biosynthesis

open access: yesAdvanced Science, EarlyView.
In the American cockroach, NFYB acts as a spatiotemporin that translates distinct hormonal cues into tissue‐specific allometry. Juvenile hormone activates NFYB in the early fat body, while 20‐hydroxyecdysone induces it in late wing pads. NFYB then promotes protein biosynthesis via core translational machinery, driving differential growth across the ...
Fangfang Liu   +11 more
wiley   +1 more source

COMPOSITION AND MORPHOLOGY OF CRYSTALS OF PLATINUM GROUP MINERALS FROM PLACERS OF THE SOUTH URALS [PDF]

open access: yesМинералогия, 2017
Crystals of platinum group minerals (PGMs) of the Os–Ir–Ru and Pt–Fe systems from placer deposits of the South Urals are zonal and relatively homogenous in composition and can contain inclusions of PGE sulfides, arsenides, sulfarsenides, and antimonides.
V.V. Zaykov   +4 more
doaj  

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