Sort by:
Publication Type:
Open access:
Publication Date:
Periodicals:
Search results
Online since: August 2013
Authors: Xiao Bin Zhu, Yan Cong Zhang, Hui Wang
On-site compaction Random check is done according to the detection frequency, calculating the compactness of each measurement point Ki The sand replacement method or cutting ring method can be used in field compaction degree examination of fine-grained soil; sand replacement method, water bag method or drilling sampling wax seal method can be used in coarse grained soil compaction check.
Hierarchical compactness of all the points should meet the requirements when the construction segment is short, and the number of samples should not be less than six.
Hierarchical compactness of all the points should meet the requirements when the construction segment is short, and the number of samples should not be less than six.
Online since: January 2022
Authors: Enche Ab Rahim Siti Kartini, Heymmela A.P. Kasi, Norazharuddin Shah Abdullah
., [13] which reported an increase in the glucose yield with the temperature for the hydrolysis of distiller grains.
Acknowledgement The authors acknowledge the research grant provided by Universiti Malaysia Perlis under the Fundamental Research Grant Scheme (FRGS), a grant number of FRGS/1/2015/TK02/UNIMAP/02/2 from the Ministry of Higher Education Malaysia that resulted in this article.
Optimizing dilute acid hydrolysis (DACH) of distiller grains and ethanol fermentation.
Acknowledgement The authors acknowledge the research grant provided by Universiti Malaysia Perlis under the Fundamental Research Grant Scheme (FRGS), a grant number of FRGS/1/2015/TK02/UNIMAP/02/2 from the Ministry of Higher Education Malaysia that resulted in this article.
Optimizing dilute acid hydrolysis (DACH) of distiller grains and ethanol fermentation.
Online since: August 2016
Authors: Kee Ahn Lee, Hyung Jun Kim, Gi Su Ham, Dae Hoon Ji
In order to manufacture a thin film with outstanding properties, high purity, even grain size and high-density target material properties are required [3].
A number of recent studies have attempted to manufacture thermal-sensitive, brittle metal powder materials such as WC-Co and amorphous materials using the warm spray process [6].
Yapi, Effect of substrate temperature and source grain size on the structural and electrical properties of CSVT grown Cu(In1-xGax)Se2 thin films, Mater.
A number of recent studies have attempted to manufacture thermal-sensitive, brittle metal powder materials such as WC-Co and amorphous materials using the warm spray process [6].
Yapi, Effect of substrate temperature and source grain size on the structural and electrical properties of CSVT grown Cu(In1-xGax)Se2 thin films, Mater.
Online since: November 2016
Authors: Daiara Floriano-Silva, Nelson Heriberto Almeida Camargo, Maicon Douglas Possamai, Priscila Ferraz Franczak, Marli Baltazar Roesler Eckstein
It is known from previous studies that there are a large number of searches using the wet synthesis method to obtain calcium phosphate nanostructured powders.
These new features may contribute to biocements and biomaterials obtaining, with interconnected microporous nanostructures and microstructures, in which grain morphology and micropores favors wettability and capillary action.
The biphasic bioceramics are developed with interest of improving the grain morphology, microporosity, bioactivity and mechanical properties, which are not always achieved in bioceramics.
These new features may contribute to biocements and biomaterials obtaining, with interconnected microporous nanostructures and microstructures, in which grain morphology and micropores favors wettability and capillary action.
The biphasic bioceramics are developed with interest of improving the grain morphology, microporosity, bioactivity and mechanical properties, which are not always achieved in bioceramics.
Online since: July 2017
Authors: Antonina A. Kuzina, Yuri M. Markov, Elena A. Kuznets, Anatoliy R. Samboruk, Aleksandr P. Amosov
The microstructure of the sintered rod of nicrosil is a single-phase solution with a grain size of 8 to 40 µm, and a single-phase solution with a grain size of 6 to 15 µm of the nisil rod.
The number of pores on microsections of sintered rods Pore size Up to 50 µm From 50 to 75 µm From 75 to 100 µm Over 100 µm Nicrosil 86 1 3 0 Nisil 102 5 2 1 In the study of specific differential thermal EMF (αe) of thermocouple welded from sintered rods, it was found that in the temperature range from 0 to 100 oC value calculated from the experimental data coincides with the theoretical value (αt) which was estimated according to GOST R 8.585-2001 and is: αe = αt =0.027 mV/K.
The number of pores on microsections of sintered rods Pore size Up to 50 µm From 50 to 75 µm From 75 to 100 µm Over 100 µm Nicrosil 86 1 3 0 Nisil 102 5 2 1 In the study of specific differential thermal EMF (αe) of thermocouple welded from sintered rods, it was found that in the temperature range from 0 to 100 oC value calculated from the experimental data coincides with the theoretical value (αt) which was estimated according to GOST R 8.585-2001 and is: αe = αt =0.027 mV/K.
Online since: September 2013
Authors: Jie Li, Hua Guan, Dong Ming Song, Qi Wang, Jun Du, Jia Yang Qi
Introduction
In consideration of pyrotechnic composed by oxidant, combustible agent and adhesive is a self-contained oxygen system as oxidant providing oxygen required for combustion[1], it can produce a large number of high temperature gases and solid residues which have a certain sound effect through underwater continual and steady combustion.
Pyrotechnic which is composed by oxidant, combustible agent and adhesive is compressed into grains of which density is 1.8 g/cm3, diameter is 18 mm , weight is 5 g installed in the spray cavity and placed together with the resonant cavity which is located on the same axis with pyrotechnic charge nozzle.
Fig. 1 The diagram of test sample, including grain, spray and resonant cavity Experimental platform.
Pyrotechnic which is composed by oxidant, combustible agent and adhesive is compressed into grains of which density is 1.8 g/cm3, diameter is 18 mm , weight is 5 g installed in the spray cavity and placed together with the resonant cavity which is located on the same axis with pyrotechnic charge nozzle.
Fig. 1 The diagram of test sample, including grain, spray and resonant cavity Experimental platform.
Online since: July 2024
Authors: Mitsuru Inada, Taku Saiki
Atomic number density % for sintered alloy made from brass powder.
Tsuji, Enhanced Strength and Ductility in an Ultrafine-Grained Fe-22Mn-0.6C Austenitic Steel Having Fully Recrystallized Structure, Metall.
Tsuji, Significant contribution of stacking faults to the strain hardening behavior of Cu-15%Al alloy with different grain sizes, Sci.
Rep. 5 (2015), Article number: 16707
Tsuji, Simultaneously enhanced strength and ductility of Mg-Zn-Zr-Ca alloy with fully recrystallized ultrafine grained structures, Scripta Mater. 131 (2017) 1-5
Tsuji, Enhanced Strength and Ductility in an Ultrafine-Grained Fe-22Mn-0.6C Austenitic Steel Having Fully Recrystallized Structure, Metall.
Tsuji, Significant contribution of stacking faults to the strain hardening behavior of Cu-15%Al alloy with different grain sizes, Sci.
Rep. 5 (2015), Article number: 16707
Tsuji, Simultaneously enhanced strength and ductility of Mg-Zn-Zr-Ca alloy with fully recrystallized ultrafine grained structures, Scripta Mater. 131 (2017) 1-5
Online since: January 2012
Authors: Zi Fang Xu, Ming Xu Zhang, Jin Bo Zhu
Join the expanded pearlite can increased the number of activated particles, increased the combined capacity of CO2 in the gas.
Distribution solid glass bead mosaic is mosaic or float to quartz and lablet anorthote surface, there are some grained mullite and minor fibrous wollastonite; sticky glass vitreum nearly swaddle all raw material grains and some sintered new born substance, these substance claspor or adhere to become a solid, so that, the brick strength improved.
Tab. 3 Results of Orthogonal Experiments Sample number Roasted Temperature (℃) Fly ash admix rate (%) Coal gangue admix rate (%) strength(MPa) Heat conduction coefficient W/(m·K) Compressive Bending B1 950 40 55 26.25 4.1 0.448 B2 850 40 55 19.75 2.5 0.473 B3 750 40 55 15.25 1.9 0.571 B4 950 50 45 24.75 4.2 0.406 B5 850 50 45 18.25 2.7 0.428 B6 750 50 45 14.75 2.5 0.552 B7 950 60 35 30.25 5.8 0.400 B8 850 60 35 20.50 3.6 0.431 B9 750 60 35 16.50 3.0 0.506 Lasting quality of the insulation brick We test the lasting quality of the insulating brick according to the principle of 《sintering general brick》( GB5101-2000 ) to test the lasting quality of the insulation brick.
Tab.4 Experimental results of insulation brick acidproof, alkaliproof, freezing performance Sample number Weight loss(%) Compressive loss (%) Bending loss(%) Freezing and thawing 0.82 2.7 1.2 Acid-resisting preformance 1.8 11.5 8.0 Alkali-resisting preformance 1.6 8.5 6.1 Conclusions (1)The roasting temperature of insulation brick (B7) is 300℃ lower than the solid clay brick, belong to low-temperature roasting process, (2) The content of fly ash in roasting insulation brick is 65%, the roasting temperature is 950 ℃,belong to once simple process , the performance of B7 can come up to the traditional clay solid brick classy rank(MU30)
Distribution solid glass bead mosaic is mosaic or float to quartz and lablet anorthote surface, there are some grained mullite and minor fibrous wollastonite; sticky glass vitreum nearly swaddle all raw material grains and some sintered new born substance, these substance claspor or adhere to become a solid, so that, the brick strength improved.
Tab. 3 Results of Orthogonal Experiments Sample number Roasted Temperature (℃) Fly ash admix rate (%) Coal gangue admix rate (%) strength(MPa) Heat conduction coefficient W/(m·K) Compressive Bending B1 950 40 55 26.25 4.1 0.448 B2 850 40 55 19.75 2.5 0.473 B3 750 40 55 15.25 1.9 0.571 B4 950 50 45 24.75 4.2 0.406 B5 850 50 45 18.25 2.7 0.428 B6 750 50 45 14.75 2.5 0.552 B7 950 60 35 30.25 5.8 0.400 B8 850 60 35 20.50 3.6 0.431 B9 750 60 35 16.50 3.0 0.506 Lasting quality of the insulation brick We test the lasting quality of the insulating brick according to the principle of 《sintering general brick》( GB5101-2000 ) to test the lasting quality of the insulation brick.
Tab.4 Experimental results of insulation brick acidproof, alkaliproof, freezing performance Sample number Weight loss(%) Compressive loss (%) Bending loss(%) Freezing and thawing 0.82 2.7 1.2 Acid-resisting preformance 1.8 11.5 8.0 Alkali-resisting preformance 1.6 8.5 6.1 Conclusions (1)The roasting temperature of insulation brick (B7) is 300℃ lower than the solid clay brick, belong to low-temperature roasting process, (2) The content of fly ash in roasting insulation brick is 65%, the roasting temperature is 950 ℃,belong to once simple process , the performance of B7 can come up to the traditional clay solid brick classy rank(MU30)
Online since: March 2012
Authors: Ze Kun Wang, Hong Chen, Fan Hua Zeng, Chu Wang Su, Quan Ping Yuan
Table1 Dimension and numbers of samples
Processing project
Dimension:thick × wide ×long [mm]
Numbers of samples [piece]
Planning
19×102×910
30
Sanding
10×102×305
Testing and Evaluation Method.
The testing results showed that defects became more serious and the number of defects was increasing substantially with the feeding speed increasing.
The machining quality of Toona sinensis and Castanopsis hystrix near the sub could be improved significantly through sanding, and planning defects(burr, chipped grain, raised grain, etc ) were significantly removed at the same time, so sanding was a necessary processing for Toona sinensis and Castanopsis hystri after planning.
The testing results showed that defects became more serious and the number of defects was increasing substantially with the feeding speed increasing.
The machining quality of Toona sinensis and Castanopsis hystrix near the sub could be improved significantly through sanding, and planning defects(burr, chipped grain, raised grain, etc ) were significantly removed at the same time, so sanding was a necessary processing for Toona sinensis and Castanopsis hystri after planning.
Online since: May 2010
Authors: M. Ashraf Imam, F.H. Froes
Kraft also pointed out that a number of the
new processes could result in products that eliminate some of the current ingot metallurgy
processing steps (Figure 1), hence giving a greater cost reduction than from lower extraction costs
per se.
Recently, low-cost metal mold titanium castings have been developed that exhibit finer grain sizes and much lower alpha case (oxygen-enriched surface regions).
This process, developed from plastic injection molding, is capable of producing very complex parts generally less than 500 g in weight in large numbers (Figures 9 and 10).
Minor perturbations to existing titanium alloy formulations-adding as little as 500 to 1,000 parts per million boron-have been shown to alter the intrinsic processing response of titanium alloys leading to a radical shift in the manufacturing process paths including dramatic reduction or elimination of ingot breakdown enabled by an order-of-magnitude decrease in the ascast grain size, and relaxing constraints in secondary manufacturing processes resulting in lower cost titanium APPLICATIONS Traditionally by far the major application for titanium and its alloys has been in the aerospace industry (7,8).
Titanium armor is being specified for a number of military vehicles.
Recently, low-cost metal mold titanium castings have been developed that exhibit finer grain sizes and much lower alpha case (oxygen-enriched surface regions).
This process, developed from plastic injection molding, is capable of producing very complex parts generally less than 500 g in weight in large numbers (Figures 9 and 10).
Minor perturbations to existing titanium alloy formulations-adding as little as 500 to 1,000 parts per million boron-have been shown to alter the intrinsic processing response of titanium alloys leading to a radical shift in the manufacturing process paths including dramatic reduction or elimination of ingot breakdown enabled by an order-of-magnitude decrease in the ascast grain size, and relaxing constraints in secondary manufacturing processes resulting in lower cost titanium APPLICATIONS Traditionally by far the major application for titanium and its alloys has been in the aerospace industry (7,8).
Titanium armor is being specified for a number of military vehicles.