Environmental change and raw material selection strategies at Taoshan: a terminal Late Pleistocene to Holocene site in north-eastern China

2017 ◽  
Vol 32 (5) ◽  
pp. 553-563 ◽  
Author(s):  
Shi-Xia Yang ◽  
Yu-Xiu Zhang ◽  
You-Qian Li ◽  
Chao Zhao ◽  
Xiao-Qiang Li ◽  
...  
Keyword(s):  
Environmental Change ◽  
Late Pleistocene ◽  
Material Selection ◽  
Eastern China ◽  
Raw Material ◽  
Selection Strategies ◽  
North Eastern ◽  
Late Pleistocene To Holocene ◽  
Raw Material Selection

Raw material selection and evidence for rhinoceros tooth tools at Dadong Cave, southern China

Antiquity ◽  
2000 ◽  
Vol 74 (284) ◽  
pp. 372-379 ◽  
Author(s):  
S. Miller-Antonio ◽  
L. A. Schepartz ◽  
D. Bakken
Keyword(s):  
Material Selection ◽  
Southern China ◽  
Raw Material ◽  
Raw Material Selection ◽  
Lower Palaeolithic

Research in Dadong Cave, southern China, has revealed evidence suggesting that nonlithic materials were used in the tool kits of the Chinese Lower Palaeolithic.

System modelling for economic raw material selection

1995 ◽  
Vol 33 (12) ◽  
pp. 3301-3310
Author(s):  
R. CHEN ◽  
O. HAWALESHKA ◽  
D. STRONG
Keyword(s):  
Material Selection ◽  
Raw Material ◽  
System Modelling ◽  
Raw Material Selection

scholarly journals A Development Methodology for Copper End Termination Paste — Part 1: Origin of Green Defects

2002 ◽  
Vol 25 (2) ◽  
pp. 169-179 ◽  
Author(s):  
Umesh Kumar
Keyword(s):  
Material Selection ◽  
Flow Behavior ◽  
Process Condition ◽  
Viscoelastic Behavior ◽  
Acrylic Resin ◽  
Nitrogen Atmosphere ◽  
Raw Material ◽  
Development Methodology ◽  
Drying Conditions ◽  
Raw Material Selection

Copper (Cu) based pastes have emerged as the termination materials of choice for ceramic capacitors with base metal internal electrodes. To prevent oxidation of nickel (Ni) internal electrode and the copper terminations, it is necessary to fire the terminations in a nitrogen atmosphere. This requirement places significant restrictions on raw material selection for the termination pastes. For example, acrylic-based resins are used as organic binder for their clean burning characteristics over the traditional ethyl cellulose based binder system. As the viscoelastic behavior of acrylic resin systems are different to those of cellulose systems, differences are observed in the flow behavior of the paste. In this paper, the influence of paste rheology on the green cosmetic defects such as mooning, peaking, etc. is discussed. Additionally, the influence of process condition such as dipping parameters, drying conditions etc., on the green cosmetic defects are discussed. Finally, properties of a copper termination, which can be processed between 800–825°C, are discussed.

Influencing Factors and New Developments of Fly Ash Based Geopolymer

2013 ◽  
Vol 831 ◽  
pp. 62-66
Author(s):  
Chen Si ◽  
Zhu Ge Yan ◽  
De Ping Xu
Keyword(s):  
Fly Ash ◽  
Lightweight Concrete ◽  
Material Selection ◽  
Cementitious Material ◽  
Raw Material ◽  
New Developments ◽  
Factors Affecting ◽  
High Calcium ◽  
Raw Material Selection ◽  
Geopolymer Composites

This paper presents a discussion of factors affecting the performance of fly ash based geopolymer, and some recent innovations on fly ash based geopolymer. The characteristics of fly ash based geopolymer are discussed in terms of the effects of raw material selection, alkaline activators, and curing procedures. Nowadays, researchers have used geopolymer as a cementitious material to develop innovative geopolymer materials, such as porous, fibre reinforced and foam fly ash based geopolymer concrete, which are greener than the traditional cementitious material. The high-calcium fly ashes could be used to produce porous fly ash based geopolymer composites with satisfactory mechanical properties. The addition of fibres increases greatly the ductility of geopolymer. Foam can be added to the geopolymeric mixture to produce lightweight concrete. However, the manufacturing of fly ash-based geopolymer foam concrete has not been explored too much.

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