نتایج جستجو برای: grinding effect

تعداد نتایج: 1648431  

In this study; utilizing the elastic matrix ball has higher processing efficiency and better superficial quality than traditionalgrinding. The diversity of elastic abrasive tool characteristics contact with bend surface results in irregular wear abrasion,and abrasive tool machining status gets complicated. There is no theoretical interpretation of parameters affecting the grinding accuracy. Bec...

Journal: :Journal of Renewable Materials 2021

Improving the activity of Iron Ore Tailings (IOTs) to utilize them as a mineral admixture in cement-based minerals is still challenging. In this paper, wet grinding technology was employed stimulate IOTs, and traditional dry method used reference. The effect on activation IOTs evaluated through ion leaching from an alkaline solution reactivity index. Additionally, detailed comparison between Dr...

2011
Sönke Rehder Marten Klukkert Korbinian A. M. Löbmann Clare J. Strachan Albrecht Sakmann Keith Gordon Thomas Rades Claudia S. Leopold

Cocrystal formation rates during dry grinding and liquid-assisted grinding were investigated by X-ray powder diffractometry and Raman spectroscopy. Two polymorphic forms of piracetam were used to prepare known piracetam cocrystals as model substances, i.e.,piracetam-citric acid and piracetam-tartaric acid cocrystals. Raman spectroscopy in combination with principal component analysis was used t...

Journal: :International journal of clinical and experimental medicine 2014
Ege Gulec Balbay Umran Toru Peri Arbak Oner Balbay Kezban Ozmen Suner Ali Nihat Annakkaya

OBJECTIVE Lock and key factory workers are under the risk of metal pneumoconiosis and occupational asthma. In this cross-sectional study, it's aimed to evaluate the relationship between metal dust exposure and respiratory symptoms, pulmonary function tests of workers in different section of lock and key factory. METHODS 54 male workers (mean age, 32.8 ± 5.4) in a security and safety products ...

Journal: :The Annals of occupational hygiene 2014
Catherine B Healy Marie A Coggins Martie Van Tongeren Laura MacCalman Padraic McGowan

OBJECTIVES The task of grinding sandstone with a 5-inch angle grinder is a major source of exposure to respirable crystalline silica (RCS), known to cause diseases such as silicosis and lung cancer among workers who work with these materials. A shroud may be a suitable engineering control for this task. The objectives of this study were to evaluate the effectiveness of four commercially availab...

2013
Ibrahim J. Sunday

Determination of the energy consumption in the processing of local alcoholic beverage, burukutu in selected commercially viable six (6) local government areas in Benue state of Nigeria was conducted. Eighteen cases were randomly investigated within these locations. Mathematical expression was developed to evaluate the energy requirement for each of the seven (7) readily defined unit operations,...

Journal: :journal of modern processes in manufacturing and production 2014
hassan gheisari

in this study; utilizing the elastic matrix ball has higher processing efficiency and better superficial quality than traditionalgrinding. the diversity of elastic abrasive tool characteristics contact with bend surface results in irregular wear abrasion,and abrasive tool machining status gets complicated. there is no theoretical interpretation of parameters affecting the grinding accuracy. bec...

Journal: :Chemical communications 2011
Bingjia Xu Zhenguo Chi Xiqi Zhang Haiyin Li Chengjian Chen Siwei Liu Yi Zhang Jiarui Xu

A new ligand containing tetraphenylethylene and terpyridine moieties, and its zinc ion complex were synthesized. Both of them exhibit an aggregation-induced emission effect. Their colors and emissions can be smartly switched by various external stimuli including grinding, heating and solvent-fuming, as well as exposure to acid and base vapors.

A. Maghsoudipour H. Tamaddon

In this work, the strontium-doped lanthanum manganite- a ceramic material- used as cathode in solid oxide fuel cells. An impression of grinding time on the structural and thermal properties of Sr-doped LaMnO3 system with La1-xSrxMnO3 (x=0.2) stoichiometric ratio was investigated. The nano crystallite LSM powder with cubic structure was prepared by varying the milling time of planetary monomill ...

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