Results 61 to 70 of about 21,977 (237)

Studio comparativo tra lo stato dei luoghi prima e dopo l’incendio del Vesuvio tramite analisi satellitare

open access: yesGEOmedia, 2019
At the half of July 2017, a big wildfire destroys a large area of Vesuvio and Mount Somma in the Vesuvio National Park. In this work, we have used Landsat8 multispectral set of images to study the area before and after the fire. We have used tiles of 05-
Massimiliano Moraca, Antonio Pepe
doaj  

Performance comparison of nitrile rubber 4105 with high-bound acrylonitrile content and similar products

open access: yesHecheng xiangjiao gongye
Microstructures, molecular weights and their distributions of domestic nitrile rubber (NBR) products with high bound acrylonitrile content NBR 4105, NBR 3604 and NBR 4155 and imported pro-ducts N 220 S raw rubber, curing characteristics and ...
"HU Hai-hua, WU Yu, XU Dian-hong, ZHAO Hong-guo, HUANG Xi-dai, HE Lian-cheng, GONG Zi-qing, ZHOU Lei"
doaj   +1 more source

Threshold Currents of Vacuum Arcs With Tungsten and Copper Cathodes

open access: yesHigh Voltage, EarlyView.
ABSTRACT This paper presents the results of an experimental study aimed at determining the threshold current for triggering a vacuum arc discharge, the probability of arc ignition and the average arc operation time depending on the current for tungsten and copper electrodes.
P. S. Mikhailov   +4 more
wiley   +1 more source

Axial length as a risk factor for pseudophakic rhegmatogenous retinal detachment: A Danish registry study

open access: yesActa Ophthalmologica, EarlyView.
Abstract Purpose To examine axial length as a risk factor for pseudophakic rhegmatogenous retinal detachment (pRRD). Methods We identified eyes that underwent phacoemulsification between 2 May 2002 and 10 November 2023 and had an axial length registered at the Departments of Ophthalmology in the Capital Region of Denmark or the private clinic ...
Ditte‐Marie Leegaard Holm   +7 more
wiley   +1 more source

Passive transponder implantation in Theraphosidae: A tool for traceability and conservation

open access: yesInsect Conservation and Diversity, EarlyView.
PIT TAG microchip implantation was successfully performed in multiple tarantula species, showing high tolerance, rapid recovery from anaesthesia and no mortality associated with the procedure. Microchips remained stable and detectable after successive ecdysis events, with no negative effects on feeding behaviour, development, courtship, mating success ...
Marcelo Lago   +7 more
wiley   +1 more source

Avaliação da lama vermelha como material pozolânico em substituição ao cimento para produção de argamassas [PDF]

open access: yes, 2012
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia Civil, Florianópolis, 2009.A propriedade pozolânica da lama vermelha, bem como a sua avaliação ambiental, quanto aos metais ...
Manfroi, Eliz Paula
core  

Correlation Study between H2 Permeation and Physical·Mechanical Property in Sulfur-crosslinked Nitrile Butadiene Rubber Polymer Composites Blended with Carbon Black and Silica Fillers [PDF]

open access: yes한국정밀공학회지
A study investigated hydrogen permeability in sulfur-cured NBR composites filled with carbon black (CB) and silica, using volumetric analysis across pressures ranging from 1.2 to 92.6 MPa. Both pure NBR and MT CB- and silica-filled NBR exhibited a single
Ji Hun Lee
doaj   +1 more source

On Testing for Independence Between Generalized Error Models of Several Time Series

open access: yesJournal of Time Series Analysis, EarlyView.
ABSTRACT We define generalized innovations associated with generalized error models having arbitrary distributions, that is, distributions that can be mixtures of continuous and discrete distributions. These models include stochastic volatility models and regime‐switching models with possibly zero‐inflated regimes.
Kilani Ghoudi   +2 more
wiley   +1 more source

Total Thermal Analysis of NBR Vulcanizates

open access: yes, 1978
NBR vulcanizates of different nitrile content can be identified by total thermal analysis. Vulcanizate composition analysis is complicated because of formation of carbon from NBR.
T. G. Lamond, A. K. Sircar
core   +1 more source

KEMAMPUAN PROSES DAN KARAKTERISTIK VULKANISASI CAMPURAN NBR/EPDM [PDF]

open access: yes, 2018
Blending of two rubbers can produce superior product properties. This study examines the process and cure characteristics of the NBR/EPDM blend. This study used several types of compatibilizer, i.e.
mayasari, hesty eka; BBKKP   +2 more
core   +1 more source

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