Results 21 to 30 of about 85,755 (300)

PREVALÊNCIA DE DOENÇAS INFECCIOSAS EM REBANHO DE SUÍNOS CRIADOS AO AR LIVRE NA REGIÃO SUDOESTE DO PARANÁ, BRASIL PREVALENCE OF INFECTIOUS DISEASES IN A PIG BREEDING HERD RAISED OUTDOORS IN THE SOUTH-WESTERN REGION OF PARANÁ, BRAZIL

open access: yesCiência Rural, 2001
O presente trabalho objetivou determinar a prevalência de doenças infecciosas em rebanho de suínos criados ao ar livre na região sudoeste do Paraná, no período de outubro de 1996 a junho de 1999. Foram examinados um total de 969 animais.
Laerte Francisco Filippsen   +3 more
doaj   +1 more source

Mineral Processing Techniques Dedicated to the Recycling of River Sediments to Produce Raw Materials for Construction Sector

open access: yesMining, 2023
Dredged river sediments produce a huge volume of mineral materials, which could be incorporated into building materials. Considering the raw sediment preparation, mineral processing techniques fit perfectly to this purpose.
Mathieu Henry   +2 more
doaj   +1 more source

Fractal dimension of roughness: Influence of grain size and granular class

open access: yesJournal of Building Materials and Structures, 2018
The soil structure can be described as an assembly of elements of various sizes separated by a complex system of cracks and fractures, since the grains of the soil are differentiated by their shape, size and orientation.
Houria Bouzeboudja   +2 more
doaj   +1 more source

Effect of the Bionic Transverse Stripe on Wear Resistance and Crushing Performance of Cement Grinding Roller

open access: yesMachines, 2023
To improve the wear resistance and mineral crushing performance of grinding rollers in cement, mining, and other engineering fields, a striped groove morphology was designed on the normal grinding roller surface in this study.
Tingkun Chen   +9 more
doaj   +1 more source

A Novel Method of Crushing Glass Aggregates to Reduce the Alkali-Silica Reaction

open access: yes, 2021
This study proposed a novel method of crushing glass aggregates to reduce the alkali-silica reaction (ASR). Glass aggregates were crushed while immersed in different calcium bearing solutions.
Kim, Minjae   +3 more
core   +1 more source

Influence of Natural Aggregate Crushing Process on Crushing Strength Index

open access: yes, 2021
Crushing is one of the most energy-consuming technological processes. The purpose of grinding is to achieve the desired grain size of mineral raw materials.
Olga Vegsoova   +5 more
core   +1 more source

Crushing characteristics of axially stacked square tubes [PDF]

open access: yes, 2008
Includes abstract.Includes bibliographical references (leaves 190-195).The crushing and energy absorption characteristics of thin-walled specimens consisting of single, welded and two axially stacked plate-divided mild steel square tubes were ...
Ronchietto, Fabio Federico Piraino
core   +1 more source

Effect of Joining Mechanism on the Mechanical Recycling of Polymer–Metal Composite Parts

open access: yesRecycling
In order to be able to recycle composite components made of polymer and metal, which are used in the automotive industry, the joints must be broken. The success of the separation is influenced by the stress and also by the joining mechanism between the ...
Sandra Boekhoff   +2 more
doaj   +1 more source

DECREASE IN ABRASIVE WEAR OF ELEMENTS OF MILLS OF SHOCK AND INTEGRATED ACTION WITH USE OF SOLID BEZVOLFRAMOVY TIC-TINI ALLOYS

open access: yesВестник СибАДИ, 2017
In this work receiving composite materials on the basis of refractory connection – transitional alloy from a nikelid of the titan is considered. TiNi alloy has the high level of damping.
V. V. Akimov   +2 more
doaj   +1 more source

Determination of crushing energy during vibratory crushing [PDF]

open access: yes, 2019
The paper presents a new method of determining the energy consumption for vibratory crushing. Using the laboratory vibratory jaw crusher with kinematic actuation of the jaws, the study of determining power consumption while crushing limestone and diabase
Mazur, Marcin
core   +1 more source

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