Results 31 to 40 of about 79,992 (262)

A comparative experimental study of shale indentation fragmentation mechanism at the macroscale and mesoscale

open access: yesAdvances in Mechanical Engineering, 2017
Low drilling rate is one of the key difficulties in shale formation, but the shale fracture mechanism during drilling operation is unclear. The shale dynamic fragmentation and crack from the multiscale perspective need to be studied.
Guangjian Dong, Ping Chen
doaj   +1 more source

Analysing fragmentation in vulnerable biodiversity hotspots in Tanzania from 1975 to 2012 using remote sensing and fragstats

open access: yesNature Conservation, 2016
Habitat fragmentation is a threat to conservation of biodiversity hotspots in the Morogoro region, Tanzania. However, on-going research on fragmentation has not kept pace with temporal lapses and how individual species respond to habitat transformation ...
M.M. Ojoyi   +3 more
doaj   +3 more sources

Statistical Mechanics of Discrete Multicomponent Fragmentation

open access: yesCondensed Matter, 2020
We formulate the statistics of the discrete multicomponent fragmentation event using a methodology borrowed from statistical mechanics. We generate the ensemble of all feasible distributions that can be formed when a single integer multicomponent mass is
Themis Matsoukas
doaj   +1 more source

Statistics of Fragment Dispersion by Explosion in a Fragment Generator Warhead

open access: yesCentral European Journal of Energetic Materials, 2016
Understanding the dispersion characteristics of fragments is essential for precise planning of the end game and the neutralization of targets using directional fragment generator warheads (FGW). The authors have carried out experiments to study the spatial dispersion of the fragments in two configurations of FGWs having a circular shaped fragment ...
Kusumkant Dhote   +3 more
openaire   +1 more source

Taphonomy of a clypeasteroid echinoid using a new quasimetric approach [PDF]

open access: yesActa Palaeontologica Polonica, 2016
A new quasimetric approach is used to statistically analyze taphonomic data from a commonly occurring shallow water clypeasteroid echinoid in order to obtain metric equivalent measurements of taphonomic alteration on an interval-like scale.
Tobias B. Grun, James H. Nebelsick
doaj   +1 more source

Animal‐Assisted Activities With Therapy Dogs in Pediatric Oncology: A Multicenter Survey of the Current Status, Implementation, and Challenges in Germany, Austria, and Switzerland

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Animal‐assisted activities (AAAs) with therapy dogs have shown positive effects on patient well‐being and quality of life in various areas of medicine, including pediatric oncology. However, research on this topic is limited. The aim of this study is to present the current status of AAA in pediatric oncology in Germany, Austria, and
Jan‐Marius Wedig   +7 more
wiley   +1 more source

Microphase separation in active filament systems maintained by cyclic dynamics of cluster size and order

open access: yesPhysical Review Research, 2021
The onset of polar flocking in active matter is discontinuous, akin to gas-liquid phase transitions, except that the steady state exhibits microphase separation into polar clusters.
Lorenz Huber, Timo Krüger, Erwin Frey
doaj   +1 more source

Charge Resolution Study on AMS-02 Silicon Layer-0 Prototype

open access: yesInstruments, 2023
The work presented in this paper represents a preliminary study on the performance of the new Silicon tracker layer, Layer 0 (L0), that will be installed on top of the Alpha Magnetic Spectrometer (AMS-02), at the end of 2024.
Alessio Ubaldi, Maura Graziani
doaj   +1 more source

Occurrence of Extramedullary Relapses in Pediatric Acute Lymphoblastic Leukemia After Treatment With Blinatumomab

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT We report a retrospective single‐center analysis of pediatric patients with relapsed or refractory B‐cell precursor acute lymphoblastic leukemia focusing on relapses outside of the typical locations, bone marrow, central nervous system, or testes.
Johanna Kunz   +7 more
wiley   +1 more source

Septin 9 PB domains coordinate centrosome positioning and microtubule acetylation to control epithelial polarity

open access: yesFEBS Letters, EarlyView.
Septin 9 polybasic domains couple phosphoinositide‐rich membrane binding to centrosome positioning, Golgi organization, and microtubule acetylation to control epithelial polarity. Their loss disrupts this axis, causing centrosome mispositioning, Golgi fragmentation, reduced microtubule acetylation, and polarity inversion via upregulation of the ...
Ting ting Cai   +4 more
wiley   +1 more source

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