Chemical Process Test Specimen Material

In this study using specimens of gray cast iron Fc-25 (grade 2500). The test specimen is needed there 12 specimens include three test specimen material (base metal), 3 specimen variety of welding electrodes cast CI-A1, 3 specimen variety of welding using welding electrodes AWS 5.1 E6013 without immersion oil, three specimens variation welding using welding electrodes 5.1 AWS E6013 with immersion oil. The results of testing specimens welding electrodes cast CI-A1 in the amount of 16.63 MPa with 0.84% strain and a variety of welding electrode AWS E6013 5.1 with immersion oil also has the highest ultimate tensile strength of welding another variation in the amount of 17.98 MPa with a strain of 0.48% , While the lowest was tensile strength using a variety of welding electrode AWS E6013 5.1 without immersion oil that is 16.28 MPa with a strain of 0.49%.

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Measurement and Reduction of Radiation Damage in Frozen Hydrated Crystalline Specimens

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100069867 ◽

1978 ◽

Vol 36 (3) ◽

pp. 70-77 ◽

Cited By ~ 1

Author(s):

R.M. Glaeser ◽

S.B. Hayward

Keyword(s):

Diffraction Pattern ◽

Structural Information ◽

Structural Disorder ◽

Structural Features ◽

Biological Macromolecules ◽

Diffraction Intensity ◽

Object Structure ◽

Specimen Material ◽

Unit Cells ◽

Identical Unit

Highly ordered or crystalline biological macromolecules become severely damaged and structurally disordered after a brief electron exposure. Evidence that damage and structural disorder are occurring is clearly given by the fading and eventual disappearance of the specimen's electron diffraction pattern. The fading and disappearance of sharp diffraction spots implies a corresponding disappearance of periodic structural features in the specimen. By the same token, there is a oneto- one correspondence between the disappearance of the crystalline diffraction pattern and the disappearance of reproducible structural information that can be observed in the images of identical unit cells of the object structure. The electron exposures that result in a significant decrease in the diffraction intensity will depend somewhat upon the resolution (Bragg spacing) involved, and can vary considerably with the chemical makeup and composition of the specimen material.

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Application of Improved Voltage Compensation in the SEM to Imaging of Organic Materials

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100072666 ◽

1973 ◽

Vol 31 ◽

pp. 444-445

Author(s):

P.J. Killingworth ◽

M. Warren

Keyword(s):

Electron Beam ◽

Organic Materials ◽

Operating Parameters ◽

Low Density ◽

Beam Diameter ◽

Incident Electron Beam ◽

Specimen Material ◽

Voltage Compensation ◽

Selection Of ◽

Scanning Electron

Ultimate resolution in the scanning electron microscope is determined not only by the diameter of the incident electron beam, but by interaction of that beam with the specimen material. Generally, while minimum beam diameter diminishes with increasing voltage, due to the reduced effect of aberration component and magnetic interference, the excited volume within the sample increases with electron energy. Thus, for any given material and imaging signal, there is an optimum volt age to achieve best resolution.In the case of organic materials, which are in general of low density and electric ally non-conducting; and may in addition be susceptible to radiation and heat damage, the selection of correct operating parameters is extremely critical and is achiev ed by interative adjustment.

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Data Processing and Reconciliation for Chemical Process Operations

10.1016/s1874-5970(00)x8014-9 ◽

1999 ◽

Keyword(s):

Data Processing ◽

Chemical Process ◽

Process Operations

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Chemical process industry

AccessScience ◽

10.1036/1097-8542.127600 ◽

2015 ◽

Keyword(s):

Chemical Process ◽

Process Industry ◽

Chemical Process Industry

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The Preparation and Evaluation of a Standardized Fibrin Plate for the Assessment of Fibrinolytic Activity

Thrombosis and Haemostasis ◽

10.1055/s-0038-1654135 ◽

1970 ◽

Vol 23 (02) ◽

pp. 202-210 ◽

Cited By ~ 13

Author(s):

R Bishop ◽

H Ekert ◽

G Gilchrist ◽

E Shanbrom ◽

L Fekete

Keyword(s):

Test Specimen ◽

Fibrinolytic Activity ◽

Clinical Laboratory ◽

Fibrin Clot ◽

Fibrinolytic Enzyme ◽

Agarose Gel ◽

Fibrin Plate ◽

Percent Concentration ◽

Human Plasminogen ◽

Preparation And Evaluation

SummaryA new fibrin plate technic for evaluating components of the fibrinolytic system has been developed. It provides quick, accurate, and easily interpreted results for the fibrinolytic profile. The standardized human plasminogen-free fibrin plates can be produced in bulk and stored for prolonged periods of time. A test specimen placed in a well punched in the buffered agarose gel diffuses into the agar and lyses the fibrin clot, forming a clear reaction zone. The zone diameter is directly proportional to the log of the percent concentration of available fibrinolytic enzyme in the specimen. The plates may be used to quantitate total plasminogen, and estimate available plasmin and active plasmin. A good correlation between results obtained using these fibrin plates and caseinolytic methods was found. Performance and interpretation of tests of fibrinolysis done on these new fibrin plates indicate that it may be the most sensitive technic available for clinical laboratory work.

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