An Analytical Method for Calculating the Shielding Effectiveness of an Enclosure with an Oblique Rectangular Aperture

2019 ◽  
Vol 28 (4) ◽  
pp. 850-854
Author(s):  
Donglin SU ◽  
Hongyi LIU ◽  
Shunchuan YANG ◽  
Zihua ZHAO ◽  
Donghai SUI
Keyword(s):  
Analytical Method ◽  
Shielding Effectiveness ◽  
Rectangular Aperture

scholarly journals Semi-analytical method for evaluating shielding effectiveness of an enclosure with an aperture

2021 ◽  
Vol 24 (1) ◽  
pp. 16-23
Author(s):  
A. A. Ivanov ◽  
◽  
M. E. Komnatnov ◽  
Keyword(s):  
Equivalent Circuit ◽  
Analytical Model ◽  
Analytical Method ◽  
Absolute Error ◽  
Shielding Effectiveness ◽  
Electrostatic Problem ◽  
Average Value ◽  
Conducting Plate ◽  
Strip Lines ◽  
Coplanar Strip Lines

The paper presents a semi-analytical method for calculating the shielding effectiveness (SE) of an enclosure with an aperture filled with a dielectric or magnetic material. The method is based on a combination of quasi-static analysis of coplanar strip lines (CPS) and an analytical model of an enclosure equivalent circuit. A simulation of a CPS is reduced to solving a simple electrostatic problem and can be performed by any available numerical method. The SE calculation can be performed using any of the existing models of an enclosure equivalent circuit. In the range up to 1 GHz, a validation of the proposed method was carried out using a standardized enclosure 300×120×300 mm3 as an example. To show the capabilities of the method, the paper presents the results of SE for enclosures with a PVC ventilation grill and a glass in the aperture. Using this method in conjunction with a previously published analytical model, the SE calculations for the enclosure with a conducting plate were also performed. The results show that the proposed method has an acceptable accuracy, and the average value of the absolute error does not exceed 6.4 dB

Shielding effectiveness of a rectangular enclosure with a rectangular aperture

1996 ◽  
Vol 32 (17) ◽  
pp. 1559 ◽  
Author(s):  
M.P. Robinson ◽  
J.D. Turner ◽  
D.W.P. Thomas ◽  
J.F. Dawson ◽  
M.D. Ganley ◽  
...  
Keyword(s):  
Shielding Effectiveness ◽  
Rectangular Aperture ◽  
Rectangular Enclosure

Densitometric Identification of Primitive Erythroblasts After Reaction With Diaminobenzidine

1973 ◽  
Vol 31 ◽  
pp. 328-329
Author(s):  
John A. Trotter
Keyword(s):  
Red Blood Cells ◽  
Analytical Method ◽  
Blood Cells ◽  
Guinea Pigs ◽  
Specific Protein ◽  
Visual Examination ◽  
Hemoglobin Synthesis ◽  
Peroxidatic Activity ◽  
Small Density

Hemoglobin is the specific protein of red blood cells. Those cells in which hemoglobin synthesis is initiated are the earliest cells that can presently be considered to be committed to erythropoiesis. In order to identify such early cells electron microscopically, we have made use of the peroxidatic activity of hemoglobin by reacting the marrow of erythropoietically stimulated guinea pigs with diaminobenzidine (DAB). The reaction product appeared as a diffuse and amorphous electron opacity throughout the cytoplasm of reactive cells. The detection of small density increases of such a diffuse nature required an analytical method more sensitive and reliable than the visual examination of micrographs. A procedure was therefore devised for the evaluation of micrographs (negatives) with a densitometer (Weston Photographic Analyzer).

Bulk standards for low-temperature biological x-ray microanalysis

1984 ◽  
Vol 42 ◽  
pp. 282-283
Author(s):  
P. Echlin ◽  
M. McKoon ◽  
E.S. Taylor ◽  
C.E. Thomas ◽  
K.L. Maloney ◽  
...  
Keyword(s):  
Phase Separation ◽  
Low Temperature ◽  
Analytical Method ◽  
Salt Solutions ◽  
Absolute Concentration ◽  
Cooling Process ◽  
X Ray ◽  
The Absolute ◽  
Analytical Procedures ◽  
Electrical Conductors

Although sections of frozen salt solutions have been used as standards for x-ray microanalysis, such solutions are less useful when analysed in the bulk form. They are poor thermal and electrical conductors and severe phase separation occurs during the cooling process. Following a suggestion by Whitecross et al we have made up a series of salt solutions containing a small amount of graphite to improve the sample conductivity. In addition, we have incorporated a polymer to ensure the formation of microcrystalline ice and a consequent homogenity of salt dispersion within the frozen matrix. The mixtures have been used to standardize the analytical procedures applied to frozen hydrated bulk specimens based on the peak/background analytical method and to measure the absolute concentration of elements in developing roots.

The synephrine content of Shiikuwasha (Citrus depressa HAYATA) fruit: Analytical method and change during fruit growth

Planta Medica ◽  
2008 ◽  
Vol 74 (09) ◽  
Author(s):  
K Miyagi ◽  
T Fujise ◽  
N Koga ◽  
K Wada ◽  
M Yano ◽  
...  
Keyword(s):  
Analytical Method ◽  
Fruit Growth ◽  
Citrus Depressa
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