Results 41 to 50 of about 6,295,783 (305)

Morphometric analysis of postnatal lung development in the gray short‐tailed opossum (Monodelphis domestica): An ultrastructural study

open access: yesThe Anatomical Record, EarlyView.
Abstract An ultrastructural morphometric analysis of the postnatal development of the lung in the gray short‐tailed opossum (Monodelphis domestica) has been conducted to evaluate the morphofunctional status of this poorly developed marsupial lung immediately following parturition.
Kirsten Ferner
wiley   +1 more source

EBIC/TEM investigations of process-induced defects in EFG silicon ribbon [PDF]

open access: yes, 1981
Electron bombardment induced conductivity and scanning transmission electron microscopy observations on unprocessed and processed edge-defined film-fed growth ribbon show that the phosphorus diffused junction depth is not uniform, and that a variety of ...
Ast, D. G., Cunningham, B.
core   +2 more sources

Oxidation Performance of NiCoCrAlYTa + 7YSZ Coatings With Ta Addition at Different Temperatures

open access: yesRare Metals, EarlyView.
ABSTRACT This study investigates the morphology and oxidation behavior of thermally grown oxides (TGO) formed at the interface of NiCoCrAlYTa + 7YSZ (7 wt% Y2O3‐stabilized zirconia) coatings deposited by air plasma spray (APS) in air environments at 1050°C, 1100°C, and 1150°C. The enrichment of Ta‐rich oxides beneath the TGO, along with the segregation
Cheng Xu   +8 more
wiley   +1 more source

NANOCOMPOSITION OF HYDROXYLAPATITE FROM CORTICAL BONE TISSUE [PDF]

open access: yesМинералогия
Hydroxylapatite is one of the main components of bone tissue. In combination with collagen, it provides unique strength properties of the bone. The nanostructure of bone tissue (its composition) remains a matter of debate.
A.A. Bibko   +4 more
doaj   +1 more source

Structural and Mechanistic Basis for Extended-Spectrum Drug-Resistance Mutations in Altering the Specificity of TEM, CTX-M, and KPC β-lactamases

open access: yesFrontiers in Molecular Biosciences, 2018
The most common mechanism of resistance to β-lactam antibiotics in Gram-negative bacteria is the production of β-lactamases that hydrolyze the drugs.
T. Palzkill
semanticscholar   +1 more source

Atomic‐Scale Insights Into Antisite‐Defect‐Induced Metallicity in Halide Perovskites

open access: yesSmall, EarlyView.
Using an aberration‐corrected scanning transmission electron microscope, we identify that the PbCs antisite defect in CsPbBr3 shortens the Pb─Pb bond by ∼20 pm, and induces local strain and polarization, leading to a semiconductor‐to‐metal transition.
Sanxia Yin   +7 more
wiley   +1 more source

Antibacterial Resistance Pattern in Clinical and Non-clinical Bacteria by Phenotypic and Genotypic Assessment

open access: yesJournal of Pure and Applied Microbiology, 2021
Bacterial infections represent a very serious problem that threatens human health, antibiotics were designed to attack the causative agents of infectious diseases, but some bacterial pathogens became virulent and resistant to antibiotics by different ...
Mohamed Shawky   +2 more
doaj   +1 more source

TEM characterization of the fine scale microstructure of a Roman ferrous nail [PDF]

open access: yes, 2010
This paper describes the microstructure of a Roman ferrous nail through its observation by transmission electron microscopy. The morphologies of pearlitic colonies and ferritic grains are detailed and the relationship between pearlitic colonies and ...
Dabosi, Francis   +3 more
core   +4 more sources

Decoding Metamorphic Nanodiamonds Formation Through Their Internal Structures

open access: yesJournal of Metamorphic Geology, EarlyView.
ABSTRACT Metamorphic diamonds offer insights into Earth's evolution, modulating the global carbon cycle through subduction into the mantle and exhumation. However, the formation and internal structure of minute diamonds remain poorly understood. Here, we study the internal structures of diamond‐bearing inclusions from the Eastern Alps using state‐of ...
Tim Sotelšek   +8 more
wiley   +1 more source

A syntactic perspective on rhetorical purpose: The example of if-conditionals in medical editorials [PDF]

open access: yesIbérica, 2014
This paper provides an in-depth analysis of the functioning of if-conditionals in medical editorials (MEDs). As previous genre-based studies of medical discourse genres have shown, MEDs need to address at least three different types of readers and are ...
Shirley Carter-Thomas   +1 more
doaj  

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