Results 31 to 40 of about 81,129 (305)

Parameter Optimization of Drilling Cuttings Entering into Sieve Holes on a Surface Multi-Hole (SMH) Drill Pipe

open access: yesEnergies, 2022
The borehole drilling distance is short in soft and gas outburst-prone coal seams because of drill pipe jamming induced by cuttings accumulating in the borehole, hindering coal mine gas hazard prevention and utilization.
Lipei Ding   +4 more
doaj   +1 more source

Comparison of Crushing Effect of Differently Shaped Crushing Rollers on Whole-Plant Silage Maize

open access: yesAgriculture, 2023
Based on the mechanical test (shear test, compression test), the bond model of corn kernel and straw was established to explore the rolling and crushing effect of different crushing rollers. The type of crushing roller is different. The material crushing
Xiaodong Mu   +5 more
doaj   +1 more source

Space Complexity Analysis of Sieving in the Number Field Sieve Integer Factorization [PDF]

open access: yesProceedings of the 4th International Conference on Mechatronics, Materials, Chemistry and Computer Engineering 2015, 2015
− evaluation, space complexity Abstract. The general number sieve is the most efficient algorithm known integer factorization, it consists of polynomial selection, sieving, solving equations and finding square roots. In this paper, the p adic − evaluation provided by each root and the expected p− value are given, then we get the space complexity of ...
Yu Wang   +3 more
openaire   +1 more source

Design and Motion Process of Air-Sieve Castor Cleaning Device Based on Discrete Element Method

open access: yesAgriculture, 2023
In order to improve the cleaning effect of the castor shelling mixture, an air-sieve castor cleaning device was developed. The structure of the cleaning device was optimized by experiment and simulation based on the discrete element method.
Junming Hou   +7 more
doaj   +1 more source

Morphological characteristics of asbestos in ground bulk mineral powders

open access: yesFrontiers in Geochemistry
IntroductionDifferences exist in the morphological features of asbestos and the abilities of measuring tools over the spectrum of the particle size distribution in ground bulk mineral powders.
Julie Warner Pier
doaj   +1 more source

Image analysis of papaya seeds submitted to sarcotesta removal methods

open access: yesPesquisa Agropecuária Tropical, 2018
The germination of papaya seeds is slow and uneven, usually due to inhibitors present in the sarcotesta; however, some removal procedures may cause physical damage, negatively interfering in the physiological quality and field performance.
Rogério Luciano Severiano   +4 more
doaj   +1 more source

Preparation of manganese oxide modified molecular sieve and its application in the treatment of phenol containing wastewater

open access: yes上海师范大学学报. 自然科学版, 2021
An environmentally safe manganese oxide (MnOx) modified molecular sieve (MnOx@MS) for the effective treatment of phenol containing wastewater was prepared via an in situ oxidation of manganese sulfate(MnSO4)on the surface of 4A molecular sieve with ...
QIAO Yu   +3 more
doaj   +1 more source

The Effect of Average Chip Thickness on the Potentially Respirable Dust from CNC Finish Milling of Wood-Based Materials

open access: yesDrewno
Milling wood-based materials on CNC devices causes the creation of chips in small sizes that may escape the chip extraction zone to the surrounding environment and pollute the air. The article studied the effect of the feed rate (vf) and the width of cut
Marta Pędzik   +4 more
doaj   +1 more source

Phytoplasma infection in tomato is associated with re-organization of plasma membrane, ER stacks and actin filaments in sieve elements

open access: yesFrontiers in Plant Science, 2015
Phytoplasmas, biotrophic wall-less prokaryotes, only reside in sieve elements of their host plants. The essentials of the intimate interaction between phytoplasmas and their hosts are poorly understood, which calls for research on potential ...
Stefanie Vera Buxa   +8 more
doaj   +1 more source

A Review and Analysis of Horticultural Substrate Characterization by Sieve Analysis

open access: yesHortScience, 2022
The physical, hydrological, and physico-chemical properties of horticultural substrates are influenced by particle shape and size. Sieve analysis has been the predominate method used to characterize the particle size distribution of horticultural ...
Paul C. Bartley III   +2 more
doaj   +1 more source

Home - About - Disclaimer - Privacy