نتایج جستجو برای: compaction force

تعداد نتایج: 197424  

The main objective of this work was to design a novel device for compaction of metal powders so that the green parts could be ejected with applying a negligible force and without the need for any lubricant in either an admixed form or applied to the die wall. For this purpose a 40 mm diameter one-piece die was envisaged which would elastically contracted 0.076 mm before compaction and after com...

Journal: :iranian journal of basic medical sciences 0
fatemeh sadeghi department of pharmaceutics, school of pharmacy and pharmaceutical research center, mashhad university of medical sciences, mashhad, iran fatemeh mosaffa school of pharmacy, mashhad university of medical sciences, mashhad, iran hadi afrasiabi garekani department of pharmaceutics, school of pharmacy and pharmaceutical research center, mashhad university of medical sciences, mashhad, iran

objective eudragits are widely used polymers in the production of oral sustained release dosage forms. the application of these polymers in the production of inert insoluble matrices has been investigated. however the effect of particle size, compaction force and presence of aerosil 200 as a glidant on the properties of eudragit rs and rl matrices prepared by direct compression of their physica...

Fatemeh Mosaffa Fatemeh Sadeghi, Hadi Afrasiabi Garekani

Objective Eudragits are widely used polymers in the production of oral sustained release dosage forms. The application of these polymers in the production of inert insoluble matrices has been investigated. However the effect of particle size, compaction force and presence of Aerosil 200 as a glidant on the properties of Eudragit RS and RL matrices prepared by direct compression of their physic...

Journal: :journal of agricultural science and technology 2010
m. loghavi m. r. khadem

development of sensors to detect the location and depth of hard pans in real time is a major restriction on the application of site specific crop management (sscm). in this study, a soil compaction profile sensor equipped with four horizontal operating penetro-meters for on-the-go sensing and mapping of the location and intensity of hard pans arti-ficially formed in a soil bin was developed and...

Journal: :Journal of bacteriology 2009
Julio E Cabrera Cedric Cagliero Selwyn Quan Catherine L Squires Ding Jun Jin

In Escherichia coli the genome must be compacted approximately 1,000-fold to be contained in a cellular structure termed the nucleoid. It is proposed that the structure of the nucleoid is determined by a balance of multiple compaction forces and one major expansion force. The latter is mediated by transertion, a coupling of transcription, translation, and translocation of nascent membrane prote...

Journal: :ماشین های کشاورزی 0
احمد شریفی مالواجردی محمد یونسی الموتی احمد محسنی منش

soil compaction can occur as a result of a number of factors. one of the most important factors is soil response to pressures imposed by wheels and soil engaging tools. this research investigated the effect of tyre load and inflation pressure on soil compaction-related factors. these factors include rut width, rut depth, cone index and horizontal force in different layers of soil profile. in th...

2008
Fatemeh Sadeghi Fatemeh Mosaffa Hadi Afrasiabi Garekani F. Sadeghi

Objective Eudragits are widely used polymers in the production of oral sustained release dosage forms. The application of these polymers in the production of inert insoluble matrices has been investigated. However the effect of particle size, compaction force and presence of Aerosil 200 as a glidant on the properties of Eudragit RS and RL matrices prepared by direct compression of their physica...

ژورنال: مواد پرانرژی 2016

Explosive powder compaction is one of the developed methods of powder metallurgy that has been investigated due to the limitations of the traditional powder metallurgy. In the process in order to achieve higher density, instead of pressing force the energy released by the explosion of an explosive is used to compact and sinter the powder simultaneously. Explosive powder compaction can be done b...

Journal: :Journal of the Japan Society of Powder and Powder Metallurgy 2001

Journal: :International journal of pharmaceutics 2004
Hirofumi Takeuchi Shinsuke Nagira Hiromitsu Yamamoto Yoshiaki Kawashima

The aim of this study was to evaluate the compaction property of several pharmaceutical materials by measuring the die wall pressure. The profile of die wall force during tabletting process was measured with the compaction process analyzer (TabAll). Several compaction parameters such as maximum die wall pressure (MDP), residual die wall pressure (RDP) and pressure transmission ratio (PTR) from ...

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