Three-dimensional hydrogen distribution and quantitative determination of titanium alloys via neutron tomography

The Analyst ◽  
2020 ◽  
Vol 145 (12) ◽  
pp. 4156-4163
Author(s):  
Lixia Yang ◽  
Linfeng He ◽  
Danqi Huang ◽  
Yaoqi Wang ◽  
Quanwei Song ◽  
...  
Keyword(s):  
Quantitative Determination ◽  
Titanium Alloys ◽  
Three Dimensional ◽  
Neutron Tomography ◽  
Distribution Analysis ◽  
Hydrogen Distribution ◽  
Thermohydrogen Processing ◽  
First Time

For the first time, neutron tomography was applied for 3D quantitative hydrogen distribution analysis in titanium alloys following thermohydrogen processing.

Eine Methode zur qualitativen und quantitativen Bestimmung von drei Juvenilhormonen von Insekten

1974 ◽  
Vol 29 (3-4) ◽  
pp. 161-168 ◽  
Author(s):  
K. H. Trautmann ◽  
A. Schuler ◽  
M. Suchý ◽  
H.-K. Wipf
Keyword(s):  
Quantitative Determination ◽  
Specific Activity ◽  
High Specific Activity ◽  
Ether Extract ◽  
Qualitative And Quantitative ◽  
Work Up ◽  
First Time ◽  
Very High ◽  
Tenebrio Molitor Larvae

Abstract A method is presented permitting the qualitative and quantitative determination of all three presently known hormones (JH1-3). The determination is based on the method of radioactive isotope dilution, whereby a very small known amount of tritium-labelled JH-1 is added to the ether extract of the particular species. The addition of radioactive JH-1 permits the isolation of all three hormones, because of their similar behaviour during the chosen work up. The quantitative determination was carried out by gas chromatography and the identification was confirmed with the help of retention-times and GC-MS combination. The method was checked by using an extract of Hyalophora cecropia. For the first time methyl 10,11-epoxy-3,7,11-trimethyl-2-trans-6-trans-dodecadienoate (JH-3) could also be identified as the juvenile hormone of Melo­lontha melolontha. In Vanessa io larvae, Tenebrio molitor larvae and adults and in Musca domestica larvae none of the three known hormones could be detected. The preparation of JH-1 labelled with tritium in the methyl group of the ester was accomplished with very high specific activity (4.34 Ci/mmol) of the tritiated acid with diazomethane.

scholarly journals Determination of crystal orientation from micrographs using a MATLAB program

2005 ◽  
Vol 38 (3) ◽  
pp. 559-562 ◽  
Author(s):  
Ursula Gibson ◽  
Yi Kou
Keyword(s):  
Quantitative Determination ◽  
Crystal Orientation ◽  
Three Dimensional ◽  
Cage Structure ◽  
Gravitational Fields ◽  
Orientation Effects ◽  
Matlab Program

Crys.m is a MATLAB routine that combines a micrograph of a crystal with a scaleable, rotatable three-dimensional cage structure to determine the orientation of the crystal axes. The example presented here uses the morphology of tetragonal lysozyme. Rotation of the cage until it aligns with the crystal in the image yields the orientation of the c axis of the crystal relative to the image normal. This analysis can be used for quantitative determination of crystal orientation effects induced by electric, magnetic and/or gravitational fields.

Online photochemical vapour generation of inorganic tin for inductively coupled plasma mass spectrometric detection

2015 ◽  
Vol 30 (2) ◽  
pp. 410-416 ◽  
Author(s):  
Hualing Duan ◽  
Zhenbin Gong ◽  
Shifeng Yang
Keyword(s):  
Quantitative Determination ◽  
Inductively Coupled Plasma ◽  
Mass Spectrometric ◽  
Mass Spectrometric Detection ◽  
Inductively Coupled ◽  
Reproducible Method ◽  
First Time ◽  
Vapour Generation

A highly reproducible method based on the online PCVG technique with ICPMS detection was developed for the quantitative determination of trace levels of inorganic tin for the first time.

scholarly journals КОМП’ЮТЕРНА ТЕХНОЛОГІЯ АНАЛІЗУ ТА ДИЗАЙНУ ПРЕДМЕТНОГО СЕРЕДОВИЩА З ПОЗИЦІЇ ВІЗУАЛЬНОГО СПРИЙНЯТТЯ

2020 ◽  
pp. 39-48
Author(s):  
Т. В. Булгакова ◽  
О. В. Полякова ◽  
С. С. Кисіль ◽  
О. Є. Шмельова
Keyword(s):  
Visual Perception ◽  
Quantitative Determination ◽  
Three Dimensional ◽  
Geometrical Model ◽  
Human Being ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Three Dimensional Objects ◽  
Computer Technologies

The purpose of the investigation is the development of computer technology of analysis and design of built environment from the point of its visual perception in the space of its three-dimensional model without using the perspective projections. The methodology were used to achieve the purpose: analysis of the scientific publications on the topic of object environment composition; applied geometry methods, method of division of the geometrical object into simplexes (triangulation), methods of advanced algebra and analytical geometry; computer modeling for construction of the model of visual perception of the environment. Methods of analysis of the three-dimensional model on the basis of modeling of visual perception by means of computer technologies directly in the area of the model without using perspective projections are developed. It is offered to analyze the visual perception of any objects and their relations by means of using the solid angles with the vertices placed in the point of view and the surfaces that surround the visible contours of three-dimensional objects. This approach gives the opportunity to analyze the objects simultaneously regardless their position according to the observer; apart of that, the objects, which are accepted similarly in the reality, will have the same geometrical features during the modeling of visual perception and beside that, the refusal of using of the perspective projections will make possible to avoid the distortion of the images. The algorithm of determination of the solid angles to three-dimensional objects, which is the basis of computer methods of compositional analysis of the object environment from the position of visual perception without the use of perspective projections, is developed. The geometrical model of visual perception by a human being from the certain point of perception is built. It makes possible to define correctly visual features of the object environment and gives the opportunity to analyze the whole surrounding of the observer in the area of 360 degrees. Scientific novelty of the investigation means that the methods of analysis of the three-dimensional model on the basis of modeling of visual perception by means of computer technologies directly in the area of the model without using perspective projections are developed for the first time. The concept of the geometrical model of visual perception by a human being from the certain point of perception is developed. The further development of the methodology of quantitative determination of characteristics of object environment by means of computer technologies is defined. Practical significance shows that the results of the scientific investigation can be used for analysis and judgments of the aesthetic peculiarities of the object environment by means of computer technologies with quantitative determination of characteristics of object environment from the point of its visual perception. Such approach gives the opportunity to develop and create the further certain recommendations and instructions for correction of the existing environment and for the development of the new one.

scholarly journals EARTHQUAKES MAGNITUDE AS THE INDICATOR OF THE TECTONOSPHERE PHYSICOMECHANICAL PARAMETERS (to the 80 Anniversary of the Prominent Georgian Seismologist and Geophysicist Leah Ivanovna Tuliani)

2017 ◽  
Author(s):  
Л.Э. Левин
Keyword(s):  
Seismic Waves ◽  
Quantitative Characteristic ◽  
Three Dimensional ◽  
Tien Shan ◽  
Japanese Island ◽  
Empirical Determination ◽  
Original Procedure ◽  
Lithosphere Thickness ◽  
First Time

В статье приведены в сжатом виде результаты исследований, касающиеся строения литосферы Кавказского региона. Приведена оригинальная методика определения мощности литосферы по распределению энергии сейсмических волн с глубиной. Описана впервые выявленная особенность строения орогенов Большого и Малого Кавказа, где мощность литосферы оказалась меньше мощности коры. Приведено определение пространственного распространения т.н. астенолинз – зон частичного плавления в коре орогенов Большого и Малого Кавказа, являющихся очагами орогенного вулканизма. Подобные астенолинзы были также выявлены в коре орогенов Японской островной дуги и Тянь-Шаня и, таким образом, была установлена глобальная особенность строения многих постколлизионных орогенов. Приведены основные положения по эмпирическому определению квадратичной зависимости энергии сейсмических волн от магнитуды и количественной характеристики термодинамических параметров очага землетрясения и др. Results of studies, which are concerned the Caucasian region lithosphere structure are given in the compressed form. The original procedure of the lithosphere thickness determination from the energy distribution of seismic waves with the depth is given. The first time revealed special feature of the large and small Caucasus orogens structure is described, where the lithosphere thickness proved to be less than the thickness of crust. The three-dimensional propagation determination of the so-called astenolenses – zones of partial melting in the crust of the large and small Caucasus orogens, which are the centers of orogenic volcanism is given. Similar astenolenses were also revealed in the orogens crust of Japanese island arc and Tien Shan and was, thus, established the global special feature of the structure of many postkollision orogens. Basic provision of the quadratic dependence of seismic waves energy on the magnitude empirical determination and the quantitative characteristic of the thermodynamic parameters of the seismic center and others are given.

scholarly journals Detection and Quantitative Determination of Alkylnaphthalenes in Latakia Tobacco/ Nachweis und quantitative Bestimmung von Alkylnaphthalinen in Latakia-Tabak

1982 ◽  
Vol 11 (3) ◽  
Author(s):  
G. Nicolaus ◽  
H. Elmenhorst
Keyword(s):  
Quantitative Determination ◽  
Retention Indices ◽  
Kováts Retention Indices ◽  
Ms Analysis ◽  
Quantitative Bestimmung ◽  
First Time

AbstractNaphthalene and alkylnaphthalene were detected qualitatively and quantitatively for the first time in Latakia tobacco. 62 different alkylnaphthalenes were determined by means of GC-MS analysis, 22 of which were exactly allocated structurally by comparing the Kovats retention indices. Besides naphthalene, the following substances were also identified: 1-methylnaphthalene, 2-methylnaphthalene, 1-ethylnaphthalene, 2-ethylnaphthalene, 1-propylnaphthalene, 2-propylnaphthalene, all ten theoretically possible isomers of dimethylnaphthalene, four trimethylnaphthalenes, isobutylnaphthalene and five ethylmethylnaphthalenes. The concentration of the naphthalenes detected in Latakia tobacco is in the region of 1 ppm to 10 ppm, with the focus on 1 ppm to 3 ppm. Alkylnaphthalenes make an important contribution to the aroma of the Latakia tobacco. They clearly modify the burnt aroma of the Latakia phenols to mild, dusty, with earthy undertone.

scholarly journals Analysis of Three-dimensional Atom-probe Data by the Proximity Histogram

2000 ◽  
Vol 6 (05) ◽  
pp. 437-444 ◽  
Author(s):  
Olof C. Hellman ◽  
Justin A. Vandenbroucke ◽  
Järg Rüsing ◽  
Dieter Isheim ◽  
David N. Seidman
Keyword(s):  
Quantitative Determination ◽  
Three Dimensional ◽  
Atom Probe ◽  
Radius Of Curvature ◽  
Data Compilation ◽  
Composition Profiles ◽  
Interfacial Segregation ◽  
Crystallographic Defects ◽  
20 Nm

Abstract The three-dimensional (3D) atom-probe technique produces a reconstruction of the elemental chemical identities and three-dimensional positions of atoms field evaporated from a sharply pointed metal specimen, with a local radius of curvature of less than 50 nm. The number of atoms collected can be on the order of one million, representing an analysis volume of approximately 20 nm × 20 nm × 200 nm (80,000 nm3). This large amount of data allows for the identification of microstructural features in a sample, such as grain or heterophase boundaries, if the feature density is large enough. Correlation of the measured atomic positions with these identified features results in an atom-by-atom description of the chemical environment of crystallographic defects. This article outlines a data compilation technique for the generation of composition profiles in the vicinity of interfaces in a geometrically independent way. This approach is applied to quantitative determination of interfacial segregation of silver at a MgO/Cu(Ag) heterophase interface.

scholarly journals Quantitative determination of residual 1,4-dioxane in three-dimensional printed bone scaffold

2018 ◽  
Vol 13 ◽  
pp. 58-67 ◽  
Author(s):  
Ling Li ◽  
Jing Long ◽  
Long Li ◽  
Huijuan Cao ◽  
Tingting Tang ◽  
...  
Keyword(s):  
Quantitative Determination ◽  
Three Dimensional ◽  
Bone Scaffold

scholarly journals Fusing Multiscale Charts into 3D ENC Systems Based on Underwater Topography and Remote Sensing Image

2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
Tao Liu ◽  
De-Peng Zhao ◽  
Ming-Yang Pan ◽  
Kun Bai
Keyword(s):  
Remote Sensing ◽  
Three Dimensional ◽  
Remote Sensing Image ◽  
Processing Method ◽  
Display Condition ◽  
Underwater Topography ◽  
Electronic Chart ◽  
Visualization Technology ◽  
First Time

The purpose of this study is to propose an approach to fuse multiscale charts into three-dimensional (3D) electronic navigational chart (ENC) systems based on underwater topography and remote sensing image. This is the first time that the fusion of multiscale standard ENCs in the 3D ENC system has been studied. First, a view-dependent visualization technology is presented for the determination of the display condition of a chart. Second, a map sheet processing method is described for dealing with the map sheet splice problem. A process order called “3D order” is designed to adapt to the characteristics of the chart. A map sheet clipping process is described to deal with the overlap between the adjacent map sheets. And our strategy for map sheet splice is proposed. Third, the rendering method for ENC objects in the 3D ENC system is introduced. Fourth, our picking-up method for ENC objects is proposed. Finally, we implement the above methods in our system: automotive intelligent chart (AIC) 3D electronic chart display and information systems (ECDIS). And our method can handle the fusion problem well.

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