Determination of the Structural Parameters from the Inertial Moments

2010 ◽  
pp. 125-158 ◽  
Author(s):  
Heinz Rudolph ◽  
Jean Demaison
Keyword(s):  
Structural Parameters

Hydrodynamic determination of molecular weight, dimensions, and structural parameters of Pf3 virus

Biochemistry ◽  
1982 ◽  
Vol 21 (14) ◽  
pp. 3352-3358 ◽  
Author(s):  
Jay Newman ◽  
Loren A. Day ◽  
Gregory W. Dalack ◽  
Don Eden
Keyword(s):  
Molecular Weight ◽  
Structural Parameters

scholarly journals ASAXS study of CaF2nanoparticles embedded in a silicate glass matrix

2014 ◽  
Vol 47 (1) ◽  
pp. 60-66 ◽  
Author(s):  
Armin Hoell ◽  
Zoltan Varga ◽  
Vikram Singh Raghuwanshi ◽  
Michael Krumrey ◽  
Christian Bocker ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Spatial Distribution ◽  
Glass Matrix ◽  
Structural Parameters ◽  
Pixel Detector ◽  
Oxyfluoride Glass ◽  
X Ray ◽  
X Ray Scattering ◽  
Silicate Glass Matrix

The formation and growth of nanosized CaF2crystallites by heat treatment of an oxyfluoride glass of composition 7.65Na2O–7.69K2O–10.58CaO–12.5CaF2–5.77Al2O3–55.8SiO2(wt%) was investigated using anomalous small-angle X-ray scattering (ASAXS). A recently developed vacuum version of the hybrid pixel detector Pilatus 1M was used for the ASAXS measurements below the CaK-edge of 4038 eV down to 3800 eV. ASAXS investigation allows the determination of structural parameters such as size and size distribution of nanoparticles and characterizes the spatial distribution of the resonant element, Ca. The method reveals quantitatively that the growing CaF2crystallites are surrounded by a shell of lower electron density. This depletion shell of growing thickness hinders and finally limits the growth of CaF2crystallites. Moreover, in samples that were annealed for 10 h and more, additional very small heterogeneities (1.6 nm diameter) were found.

X-ray topographic determination of the granular structure in a graphite mosaic crystal: a three-dimensional reconstruction

2000 ◽  
Vol 33 (4) ◽  
pp. 1023-1030 ◽  
Author(s):  
M. Ohler ◽  
M. Sanchez del Rio ◽  
A. Tuffanelli ◽  
M. Gambaccini ◽  
A. Taibi ◽  
...  
Keyword(s):  
Structural Parameters ◽  
Pyrolytic Graphite ◽  
Three Dimensional ◽  
X Ray ◽  
Dimensional Reconstruction ◽  
Mosaic Crystals ◽  
Spatial Locations ◽  
Crystalline Domains

Section topographs recorded at different spatial locations and at different rocking angles of a highly oriented pyrolytic graphite (HOPG) crystal allow three-dimensional maps of the local angular-dependent scattering power to be obtained. This is performed with a direct reconstruction from the intensity distribution on such topographs. The maps allow the extraction of information on local structural parameters such as size, form and internal mosaic spread of crystalline domains. This data analysis leads to a new method for the characterization of mosaic crystals. Perspectives and limits of applicability of this method are discussed.

scholarly journals Deformability of Short Steel Reinforced Concrete Structures on Light Concrete

2018 ◽  
Vol 7 (3.2) ◽  
pp. 370 ◽  
Author(s):  
Oleksandr Semko ◽  
Viktor Dariienko ◽  
Vitaliy Sirobaba
Keyword(s):  
Reinforced Concrete ◽  
Sheet Metal ◽  
Experimental Research ◽  
Lightweight Concrete ◽  
Structural Parameters ◽  
Concrete Structures ◽  
Reinforced Concrete Structures ◽  
Steel Reinforced Concrete ◽  
Thin Walled

The calculation, modeling and experimental research of steel-concrete tubular elements made of thin-walled galvanized sheet metal and lightweight concrete have been carried out. The proposed type of structures can be used as a separate structure in the form of a column or a pillar, and one of the types of the reinforcement of a certain light structure. The basic technological and constructive requirements for manufacturing and further exploitation of structures are given. For determination of actual work’s indexes of constructions experimental research of standards are undertaken, and recommendations on adjustment of well-known calculation formulas of close constructions as for structural parameters are given. The design (modeling) was performed in MSC / Nastran software. An analysis of the proposed structures use is carried out with the corresponding conclusions. 

scholarly journals Determination of the Mean Number of Bonds per snow grain And of the Dependence of the Tensile Strength of Snow on Stereological Parameters

1978 ◽  
Vol 20 (83) ◽  
pp. 329-341 ◽  
Author(s):  
H. Gubler
Keyword(s):  
Tensile Strength ◽  
Density Distribution ◽  
Structural Parameters ◽  
Theoretical Density ◽  
Thin Sections ◽  
Distribution Parameters ◽  
The Mean ◽  
Fundamental Units ◽  
Effective Distribution

AbstractA theoretical density distribution of the Dumber of bonds per grain as a function of the mean number of bonds per grain is derived from the assumption of randomness and isotropy of grain and grain-bond location and orientation. The knowledge of the theoretical density distribution allows the determination of the effective distribution parameters from section planes or thin sections. The concept of the fundamental unit to describe the strength of snow is introduced. Structural parameters developed on the basis of the fundamental units show improved correlations with the tensile strength.

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