• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 112
  • 22
  • 20
  • 6
  • 5
  • 3
  • 2
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • Tagged with
  • 293
  • 74
  • 42
  • 38
  • 35
  • 35
  • 33
  • 32
  • 31
  • 29
  • 26
  • 26
  • 26
  • 24
  • 22
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Organic gels for injection molding of powders

Moore, Christopher Mark 05 1900 (has links)
No description available.
2

Mixing of pharmaceutical granulations

Patel, Mahendra R., January 1978 (has links)
Thesis--Wisconsin. / Vita. Includes bibliographical references (leaves 178-182).
3

Intelligent scanning in selective laser sintering /

Chen, Kenwei, January 1998 (has links)
Thesis (Ph. D.)--University of Texas at Austin, 1998. / Vita. Includes bibliographical references (leaves 148-158). Available also in a digital version from Dissertation Abstracts.
4

Production and properties of metal-coated powders for use in the production of engineering components

Baban, Selwan Anwar January 1989 (has links)
This research involves a study of sane of the methods available for covering material substrates with a metallic coating. The materials studied were metal and ceramic powders, and the research attempted to produce composite powders, which could be used in the powder metallurgy industries as cheaper replacements for existing expensive powders. For example, iron powder particles coated with copper/tin could replace expensive bronze powders in machine bearing production.
5

Determination of compaction parameters of pharmaceutical powders with an instrumented hydraulic press

Doroudian, Ahmad January 1991 (has links)
Prediction of the tabletting behavior of powdered drugs is of great importance in the pharmaceutical industry. An instrumented hydraulic press and punch and die assembly were used to study compaction behavior of 5 widely used pharmaceutical materials, Avicel, Emcompress, spray-dried lactose, crystalline acetaminophen USP and acetaminophen DC granules. The hydraulic press was able to compress the above materials at compaction speeds comparable to those of rotary tablet presses. The compression cycle of the Betapress could not be duplicated by the hydraulic press since, with the hydraulic press, the displacement was not constant at peak pressure. The compaction parameters measured by the hydraulic press were elastic recovery (ER), punch travel distance beyond peak pressure (D), punch travel time beyond peak pressure (PTT) decrease in the force during punch travel beyond peak pressure (F). The strength of the tablets was measured with a CT40 tablet hardness tester. D and PTT appeared to be measures of flow and bonding and to be useful parameters for the tabletting behavior of the above materials. In general, materials that displayed relatively long D and PTT values formed coherent tablets regardless of their elastic recovery. Avicel which displayed the longest D and PTT values (and the largest recovery) formed the strongest tablets while crystalline acetaminophen USP displayed the shortest D and PTT values and did not form coherent compacts. Thus for particulate materials that were able to flow and bond, elastic recovery did not appear to play an important role in the tabletting process. Avicel and spray-dried lactose displayed similar D and PTT values (ie. similar extent of flow and deformation) and Avicel's elastic recovery was about 3 times as much as of that of spray-dried lactose, but Avicel formed tablets that were about 5 times stronger than those of spray-dried lactose. Therefore the nature and number of bonds that are formed between the particles (which are related to the inherent property of the materials) appeared to be the most important factor in tablet formation. The effects of peak pressure (Pmax) and average compression rate (ACR) were examined on the above parameters. Generally peak pressure influenced the elastic recovery, D, PTT and hence the strength of the tablets more than the average compression rate. / Pharmaceutical Sciences, Faculty of / Graduate
6

Development of Dense Ceramic Tiles From Mixtures of Alumina Powders With Different Psd/

Sütçü, Mücahit. Akkurt, Sedat January 2004 (has links) (PDF)
Thesis (Master)--İzmir Institute of Technology, İzmir, 2004. / Includes bibliographical references (leaves. 64-66).
7

Vibration and fluidisation of powders

Edwards, D. N. January 1985 (has links)
No description available.
8

The role of surface energetics in the mixing of powders

Ahfat, Nathalie Marilyn Wang January 1998 (has links)
No description available.
9

The role of surface free energy in the compaction of powders

Luangtana-Anan, Manee January 1988 (has links)
No description available.
10

Mechanical properties of rotary forged sintered steel compacts

Peacock, Simon January 1996 (has links)
No description available.

Page generated in 0.0336 seconds