Mechanism Analysis and Dairy Filtration Experimental Research on Porous 1Cr18Ni9 Stainless Steel Components

2013 ◽  
Vol 668 ◽  
pp. 902-906
Author(s):  
Xiu Ping Dong ◽  
Ya Ting Huang ◽  
Ming Ji Huang
Keyword(s):  
Stainless Steel ◽  
Porous Material ◽  
Three Dimensional ◽  
Porous Metal ◽  
Chocolate Milk ◽  
Mechanism Analysis ◽  
Steel Wires ◽  
Before And After ◽  
Filtering Efficiency

Cool-drawn 1Cr18Ni9 stainless steel wires of 0.1~0.5 mm can be woven and punched to prepare porous metal filters. There is certain amount of connected micron pores in the transformable components. Filtration mechanism of this porous material is investigated and three series of samples with different diameter of wires, porosities and filtrating ranges are prepared. Filtration performances compares experiments are carried out on a kind of chocolate milk with the brand of Sanyuan. Three-dimensional microscopy, KEYENCE VHX-600, is applied to investigate the diaphragms before and after filtrating. Portable contamination analysis kit, HPCA-2, is chosen to identify the degree of contaminating. Results indicate that these kind of porous metal filters have valid solid/fluid separating effects. Wires diameters and other preparation parameters will identify the porosity. Thinner wires contribute to more and tinier porous and will block particles effectively. Thickness of filters plays the similar role of filtration layer. Higher porosity will increase the cleanliness of the passing fluid and decrease the filtering efficiency. The data in this paper provide technical support to the application in dairy filtration industry.

Design, experiment and adsorption mechanism analysis of bionic sucker based on octopus sucker

2019 ◽  
Vol 233 (12) ◽  
pp. 1250-1261
Author(s):  
Peng Xi ◽  
Qian Cong ◽  
Jin Xu ◽  
Kun Qiu
Keyword(s):  
Surface Morphology ◽  
Continuous Wave ◽  
Three Dimensional ◽  
Tensile Tests ◽  
Mechanism Analysis ◽  
Three Dimensional Printing ◽  
Adsorption Performance ◽  
Before And After ◽  
Sealing Mechanism ◽  
Microscopic Morphology

The vacuum chuck is widely used in industrial and daily life. By observing the macroscopic and microscopic morphology of octopus sucker, it is found that the sucker surface has concave–convex continuous wave shape with large number of non-smooth morphologies. The sealing mechanism of octopus sucker is analyzed according to its surface morphology before and after adsorption, and the non-smooth morphology is found to greatly enhance the adsorption. Based on the bionics theory, the non-smooth surface morphology of octopus sucker is applied to improve the sucker adsorption. And the bionic suckers with three types of grooves are designed. According to the model of standard and bionic suckers, the sucker entities are obtained by the method of three-dimensional printing and casting. And the tensile tests of suckers are carried out. The stress of suckers is analyzed by finite element method, and the sealing mechanism is discussed. According to the test results, the bionic sucker has larger adsorption force. And the ring sucker possesses the best adsorption performance. Compared with the standard sucker, the maximum adsorption force of the bionic sucker is increased by 12.2% in the air and 25.2% underwater. The adsorption force of bionic sucker becomes larger with the increase in the groove number; when the groove number increases to a certain extent, the adsorption force becomes smaller. The deformation of non-smooth morphology during adsorption makes the bionic sucker have a larger contact area. That is the reason why the bionic sucker has good adsorption performance. The bionic design of sucker can provide a new method to improve its adsorption.

A Measurement of Proximal Femur Strain with Total Hip Arthroplasty

1980 ◽  
Vol 102 (3) ◽  
pp. 230-233 ◽  
Author(s):  
R. D. Crowninshield ◽  
D. R. Pedersen ◽  
R. A. Brand
Keyword(s):  
Stainless Steel ◽  
Elastic Modulus ◽  
Femoral Component ◽  
Proximal Femur ◽  
Strain Measurement ◽  
Strain State ◽  
Total Hip ◽  
Before And After ◽  
Component Loosening

Strain measurement was performed on loaded fresh human cadaveric proximal femurs before and after total hip femoral component implantation. Changes in the femurs’ strain state associated with loading through stainless steel and titanium femoral components were recorded. The role of proximal femur remodeling in femoral component loosening is discussed along with the likely effect of femoral component elastic modulus on the remodeling process.

Resistance Welding by Inserting Wires between Joint Interfaces

2007 ◽  
Vol 127 ◽  
pp. 343-347
Author(s):  
Takeshi Terajima ◽  
Toshio Kuroda
Keyword(s):  
Stainless Steel ◽  
Melting Point ◽  
Base Material ◽  
Resistance Welding ◽  
Joint Interface ◽  
Base Materials ◽  
Steel Wires ◽  
Material Temperature ◽  
Type 316L Stainless Steel

Butt resistance welding of super duplex stainless steel by inserting type 316L stainless steel wires was investigated. When the base material temperature was increased from room temperature to 1100 oC at the heating rate of 550 oC /sec, base materials were jointed through the insert wires and HAZ (heat affected zone) of the joint interface were less than 80 μm. In this joining technique, the insert wires played a role of concentrating current on the wires and increasing their temperature up to melting point or near melting point. When the welding was performed at a load of 10 N, the insert wires consisted of ferrite and austenite growing along the ferrite grain boundary. When the welding was performed at a load of 70N, insert wire remained austenite. That is because the contact resistance between insert wire and base materials at 70 N was lower than that of 10 N, and consequently the insert wire were not adequately heated.

Fabrication of a three-dimensional graphene coating for solid-phase microextraction of polycyclic aromatic hydrocarbons

RSC Advances ◽  
2015 ◽  
Vol 5 (67) ◽  
pp. 54329-54337 ◽  
Author(s):  
Shuaihua Zhang ◽  
Zhi Li ◽  
Xiumin Yang ◽  
Chun Wang ◽  
Zhi Wang
Keyword(s):  
Stainless Steel ◽  
Aromatic Hydrocarbons ◽  
Solid Phase Microextraction ◽  
Solid Phase ◽  
Sol Gel ◽  
Three Dimensional ◽  
Graphene Coating ◽  
Steel Wires ◽  
Coating Method ◽  
Polycyclic Aromatic

A novel three-dimensional graphene (3D-G) coated fiber for solid-phase microextraction (SPME) was fabricated via a sol–gel coating method on stainless steel wires.

Modelling of catalysts and its relation to experimental problems

1992 ◽  
Vol 341 (1661) ◽  
pp. 255-268 ◽  
Keyword(s):  
Small Molecules ◽  
Active Sites ◽  
Thermal Activation ◽  
Porous Metal ◽  
Acid Sites ◽  
Zeolite Catalysts ◽  
Before And After ◽  
Porous Metal Oxides ◽  
And Diffusion

We illustrate the role of both computer simulation and the evaluation of electronic structure in the study of solid heterogeneous catalysis by reference to recent work in this laboratory on ( a ) microporous materials (that have a spatially uniform distribution of accessible active sites) and ( b ) non-porous metal oxides. Computational methodologies may be used to model, first, the structure of the uniform catalysts both before and after thermal activation, second, the docking and diffusion of molecules in solids and on their surfaces; and, third, the reaction pathways of molecules at the active site. We highlight recent successes in modelling (i) the structures of zeolitic solids, (ii) the sorption of hydrocarbons within them, (iii) the protonation of small molecules at the Bronsted acid sites in uniform solid acid (zeolite) catalysts, and (iv) the reactions of small molecules on CeO 2 and MgO surfaces.

Precise Resistance Welding with Wire Insert

2007 ◽  
Vol 539-543 ◽  
pp. 3900-3905
Author(s):  
Takeshi Terajima ◽  
Toshio Kuroda
Keyword(s):  
Stainless Steel ◽  
Melting Point ◽  
Base Material ◽  
Resistance Welding ◽  
Joint Interface ◽  
Base Materials ◽  
Steel Wires ◽  
Material Temperature ◽  
Wire Insert

Butt resistance welding of super duplex stainless steel type 329J4L with inserting type 316L stainless steel wires was investigated. When the base material temperature was increased from room temperature to 1373 K at the heating rate of 550 K /sec, base materials were jointed through the insert wires. HAZ (heat affected zone) of the joint interface were less than 80 μm. In this jointing technique, the insert wires played an important role of concentrating current on the wires and increasing their temperature up to melting point or near melting point. Thermal analysis using thermography revealed that insert wires were adequately heated just after current started at a load of 10 N. When the welding was performed at a load of 70 N, joint area was increased by plastic deformation of the base material. That led to decrease of current concentration. Consequently insert wires were jointed in the solid state.

scholarly journals Role of organizational learning and knowledge management

2017 ◽  
Vol 8 (3) ◽  
pp. 19-32
Author(s):  
Fazal Haleem
Keyword(s):  
Knowledge Management ◽  
Organizational Learning ◽  
Three Dimensional ◽  
Three Dimensional Model ◽  
Organization Capacity ◽  
Manufacturing Company ◽  
Before And After ◽  
Low Performance

AbstractThis research is based on Electrocell, a US battery manufacturing company, which was facing problems in its marketing and sales departments as evidenced by its low performance. Following a short introduction to the firm, literature reviews the two recently emerged and widely debated topics, that is, organizational learning and knowledge management. It is followed by the reasons for Electrocell’s declination and revival before and after acquisition by Restart, a US cosmetic manufacturing company. Then, Knowledge Sharing Model, General Hierarchical Model of Organizational Commitment, Knowledge Management, and Learning Organization Capacity, and Three Dimensional Model are described and critically analyzed. At the end, Knowledge Management System Conceptual Model is applied on the case study thoroughly and critically analyzed followed by summary. The research contributes to the literature and offers important implications for academics, managers and strategists that why learning is important and how does it matter to an organization.

scholarly journals Three-dimensional chemical analysis of laser-welded NiTi–stainless steel wires using a dual-beam FIB

2013 ◽  
Vol 61 (8) ◽  
pp. 3090-3098 ◽  
Author(s):  
P. Burdet ◽  
J. Vannod ◽  
A. Hessler-Wyser ◽  
M. Rappaz ◽  
M. Cantoni
Keyword(s):  
Stainless Steel ◽  
Chemical Analysis ◽  
Three Dimensional ◽  
Steel Wires ◽  
Dual Beam

Child and Adolescent Suicides in Bosnia and Herzegovina Before and After the War (1992–1995)

Crisis ◽  
2010 ◽  
Vol 31 (3) ◽  
pp. 160-164 ◽  
Author(s):  
Almir Fajkic ◽  
Orhan Lepara ◽  
Martin Voracek ◽  
Nestor D. Kapusta ◽  
Thomas Niederkrotenthaler ◽  
...  
Keyword(s):  
Bosnia And Herzegovina ◽  
Age Differences ◽  
Suicide Risk ◽  
Child And Adolescent ◽  
Youth Suicide ◽  
Southeastern Europe ◽  
Suicide Rates ◽  
Before And After ◽  
Sex And Age Differences

Background: Evidence on youth suicides from Southeastern Europe is scarce. We are not aware of previous reports from Bosnia and Herzegovina, which experienced war from 1992 to 1995. Durkheim’s theory of suicide predicts decreased suicide rates in wartime and increased rates afterward. Aims: To compare child and adolescent suicides in Bosnia and Herzegovina before and after the war. Methods: Data on youth suicide for prewar (1986–90) and postwar (2002–06) periods were analyzed with respect to prevalence, sex and age differences, and suicide methods. Suicide data from 1991 through 2001 were not available. Results: Overall youth suicide rates were one-third lower in the postwar than in the prewar period. This effect was most pronounced for girls, whose postwar suicide rates almost halved, and for 15–19-year-old boys, whose rates decreased by about a one-fourth. Suicides increased among boys aged 14 or younger. Firearm suicides almost doubled proportionally and were the predominant postwar method, while the most common prewar method had been hanging. Conclusions: The findings from this study indicate the need for public education in Bosnia and Herzegovina on the role of firearm accessibility in youth suicide and for instructions on safe storage in households. Moreover, raising societal awareness about suicide risk factors and suicide prevention is needed.

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