scholarly journals Electropolishing Procedure Dedicated to In-Depth Stress Measurements with X-Ray Diffractometry

2016 ◽  
Vol 2016 (8) ◽  
pp. 65-72 ◽  
Author(s):  
Elżbieta Gadalińska ◽  
Wojciech Wronicz
Keyword(s):  
Stainless Steel ◽  
Reliable Method ◽  
Point Of View ◽  
Universal Theory ◽  
Mutual Correlation ◽  
Factors Affecting ◽  
X Ray ◽  
Stress Measurements ◽  
Different Thickness ◽  
Selection Of

AbstractElectropolishing is the sole reliable method of removing the outer layer of the specimen without changing its stress state. This feature of the electropolishing procedure allows researchers to investigate the in-depth stress distribution. Developing of the method in a diffraction laboratory is crucial because there is no universal theory for the electropolishing procedure allowing the removal of the layers of different thickness. This is due to the multiplicity of different factors affecting the electropolishing results. A factor of vital importance from the point of view of indepth stress measurements is the thickness of the electropolishing layer. Hence the importance of the procedures for the electropolishing of a layer of a precisely defined thickness.This work deals with the problem of the selection of the parameters in the electropolishing process for two types of materials: stainless steel and aluminium alloy. The tests of mutual correlation of current intensity, voltage applied and time of the procedure and its results are presented in the paper.

scholarly journals The Factors of Deterioration of Natural Pastures From The View Point of Agricultural Employees in Al-Muthanna Governorate

2021 ◽  
Vol 923 (1) ◽  
pp. 012066
Author(s):  
Emad Fahad Nafeh Al-Bahli ◽  
Mahmoud Hadis Jassim Al-Jumaili
Keyword(s):  
Personal Characteristics ◽  
Research Area ◽  
Point Of View ◽  
Personal Factors ◽  
Factors Affecting ◽  
Work Location ◽  
Natural Factors ◽  
Significant Difference ◽  
The Impact ◽  
Selection Of

Abstract The research aimed to determine the impact studied factors represented by (people’s activities, government activities, natural factors) on the deterioration of natural pastures in the Governorate of Al-Muthanna the point of view of agricultural employees in the governorate. The research included all agricultural employees with a preparatory scientific qualification in agriculture and above in the governorate their number is (94) employees. A questionnaire was prepared to collect the data necessary to achieve the objectives of the research. It consisted of two parts. The first part included the factors related to the employees, which are (term of service, academic achievement, participation in extension activities, job position and work location). The second part included a measure to identify the agricultural employees’ the point of view of on the factors affecting the deterioration of natural pastures. It consists of (46) section spread over (3) field covered by the research. The results showed that government activities have the most impact on the deterioration of natural pastures, it was found a statistically significant difference in the respondents’ point of view about the influence of the studied factors according to their personal characteristics. The researchers concluded the necessity of agricultural expansion in pasture lands and industrial investments, as well as the importance of personal factors in assigning employees who can work in the development of natural pastures, and the researchers recommend activating government laws for the protection of natural pastures to prevent abuses (people’s activities, government activities) that contributed greatly to the deterioration of vegetation cover in the research area and taking into account the factors studied in the selection of workers in the development of natural pastures in the research area.

Study on Technological Mineralogy of a Certain Lead-Zinc Ore

2013 ◽  
Vol 634-638 ◽  
pp. 3498-3501
Author(s):  
Zheng Yao Li ◽  
Xiao Fan Guo ◽  
Jun Liu ◽  
Li Li Wang ◽  
Heng Qian Li
Keyword(s):  
Particle Sizes ◽  
X Ray Diffraction ◽  
Factors Affecting ◽  
X Ray ◽  
Lead And Zinc ◽  
Lead Zinc ◽  
Zinc Mine ◽  
Process Mineralogy ◽  
Selection Of ◽  
Scanning Electron

The characteristics of process mineralogy of the some lead-zinc mine were studied with scanning electron microscope, optics microscopes，and x-ray diffraction. The species of lead minerals and zinc minerals and the chemical composition of the minerals were analyzed. The liberations at different grinding finenesses and the particle sizes of the minerals had been also determined. The phase shape of lead and zinc in the ore was also analyzed. The behaviors of various minerals and mineralogical factors affecting the flotation had been explained clearly. The investigation results were favorable to reasonable selection of flotation parameters and would provide theoretical guidance to lead-zinc separation.

scholarly journals Sociodemographic determinants of perceived influences on food choice in a nationally representative sample of Irish adults

2000 ◽  
Vol 3 (2) ◽  
pp. 219-226 ◽  
Author(s):  
M Kearney ◽  
JM Kearney ◽  
A Dunne ◽  
MJ Gibney
Keyword(s):  
Food Choice ◽  
Representative Sample ◽  
Female Gender ◽  
Sociodemographic Factors ◽  
Point Of View ◽  
Healthy Diet ◽  
Factors Affecting ◽  
Sociodemographic Determinants ◽  
Nationally Representative ◽  
Selection Of

AbstractObjectiveTo identify the most important motivations for food choice from the point of view of the consumer in the Irish population, and to characterize those subjects who do and do not regard nutrition as a significant consideration in food choice.DesignAs part of a pan-European Union (EU) survey on consumer attitudes to food, nutrition and health, a quota-controlled, nationally representative sample of Irish adults (n = 1009) aged 15 years upwards, completed an interview-assisted, close-ended questionnaire. Subjects selected three factors, from a list of 15, which they believed had the greatest influence on their food choice.SettingThe interviews for the survey were conducted in subjects' homes.Results‘Quality/freshness of food’ was the most frequently selected food choice factor (51%) followed by ’taste‘ (43%) and ‘trying to eat a healthy diet’ (36%). Female gender, increasing age and higher levels of education were found to be independent sociodemographic factors affecting the selection of ‘trying to eat a healthy diet’ as an important factor in food choice.ConclusionsAlthough included in the top five most frequently selected factors affecting food choice, nutrition/healthy eating does not appear to have top priority for the majority of Irish adults. There are differences between the various sociodemographic groups within the population; males and younger subjects appear to require specific nutrition promotion messages.

Research on Process Mineralogy of some Pyrite Cinder

2013 ◽  
Vol 634-638 ◽  
pp. 3446-3449
Author(s):  
Zheng Yao Li ◽  
Wei Gang Chi ◽  
Jun Liu ◽  
Xiao Fan Guo ◽  
Heng Qian Li
Keyword(s):  
Pyrite Cinder ◽  
X Ray Diffraction ◽  
Factors Affecting ◽  
X Ray ◽  
Iron Copper ◽  
Chemical Phase ◽  
Process Mineralogy ◽  
Chemical Phase Analysis ◽  
Pyrite Cinders ◽  
Selection Of

The characteristics of process mineralogy of some pyrite cinders were studied with optics microscopes, scanning electron microscope, and x-ray diffraction. The chemical composition and the phase composition of the pyrite cinders were analyzed. The occurrence and chemical phase analysis of molybdenum of iron, copper, and gold were also studied. The behaviors of various minerals and mineralogical factors affecting the separation had been explained clearly. The investigation results were favorable to reasonable selection of technological process.

scholarly journals Factors affecting the breeding of the field mouse ( Microtus agrestis ). Part I.—Light

1932 ◽  
Vol 110 (767) ◽  
pp. 313-322 ◽  
Keyword(s):  
Breeding Season ◽  
Adaptive Response ◽  
Point Of View ◽  
Microtus Agrestis ◽  
Factors Affecting ◽  
The Third ◽  
Natural Factors ◽  
Intense Light ◽  
Selection Of ◽  
At Will

The investigations described in this series of papers were partly experimental and partly observational. The first two papers will deal with the experimental work, and the third with the observational. The observational work has shown that Microtus agrestis has a definite breeding season in the British Isles, extending roughly from March till September. This species appeared to be a suitable one on which to experiment for the purpose of finding the factors which control the breeding season, a subject on which so little is known in any mammal. Our immediate object has been to find the factors, and not to find how they work. There seem to be two sorts of way in which they might work. Firstly, one could imagine that it might be physiologically impossible for an animal like Microtus to breed below a certain temperature, or in the absence of a certain foodstuff. There is, however, a second, quite different way in which such factors might act. It is possible that during the course of evolution Microtus might have evolved an adaptive response of stopping and starting reproduction when the temperature and food altered with the seasons beyond certain limits. One could imagine the natural selection of the offspring of those individuals which responded to the environment by breeding only at the most appropriate time for the rearing of the young. In our preliminary investigations we have not attempted to distinguish between these two possible modes of action of factors controlling the breeding season. Our object has been to find the factors, irrespective of the way in which they work. We have regarded the problem from the biological rather than the physiological point of view. No doubt we could stop Microtus from breeding by depriving it of vitamin E, or subjecting it to extremes of temperature ; but our experiments were planned in such a way that our animals were never subjected to unnatural conditions. They were never fed on unnatural foods, nor kept at higher or lower temperatures than occur naturally in Great Britain, nor given longer or shorter periods of light, nor more intense light. We were not anxious simply to stop and start the reproduction of Microtus at will, but to find what are the natural factors which control its breeding season in a state of nature.

scholarly journals The In-Depth Stress Distribution for 1H13 Specimen after Cutting

2016 ◽  
Vol 2016 (8) ◽  
pp. 73-79
Author(s):  
Elżbieta Gadalińska ◽  
Wojciech Wronicz ◽  
Maciej Malicki
Keyword(s):  
Stainless Steel ◽  
Stress State ◽  
Surface Stress ◽  
Neutron Radiation ◽  
Strain Gauges ◽  
Additional Stress ◽  
X Ray Diffraction ◽  
X Ray ◽  
Stress Measurements ◽  
Non Destructive

AbstractMeasuring the in-depth stress state is of vital importance for materials scientists. Strain gauges methods are capable of yielding information only about the surface stress state. Diffraction methods using synchrotron or neutron radiation, which allow totally non-destructive stress measurements inside the material, are not widely available. In this context, the best widely available method combines the X-ray diffraction stress measurements and gradual removal of the outer layer by means of electropolishing. Here, this method was applied to the specimen made of 1H13 stainless steel cut with under water on a corundum cut-off wheel. The idea was to investigate how deeply an additional stress state resulting from cutting was introduced and whether the technique of combining of X-ray diffractometry and electropolishing can be used widely for determining the stress state inside the specimen.

scholarly journals Sexual Selections: "Explorations in the Anthropology of Sex

1991 ◽  
Vol 9 (1) ◽  
Author(s):  
Ann Herring
Keyword(s):  
Human Sexuality ◽  
Point Of View ◽  
Factors Affecting ◽  
Sexually Transmitted ◽  
Anatomy And Physiology ◽  
Human Fertility ◽  
Sex And Sexuality ◽  
Sexual Selection Theory ◽  
Human Primate ◽  
Selection Of

The following selection of papers arose out of a half-year seminar course, The Anthropology of Sex, held at McMaster University in the winter of 1990. The course was originally conceived as a vehicle for scrutinizing the physical anthropological significance of current understandings of human sexuality and reproduction. As such, I imagined we would discuss human sexuality from the point of view of human and non-human primate biology, diversity, and evolution. I dutifully sketched out a fairly predictable range of topics, which included the origins and evolution of sexual reproduction, sex and sexuality in human evolution, factors affecting human fertility, the uniqueness (or not) of human sexual response and eroticism, variation in human sexual anatomy and physiology, sexual selection theory, sex differences between human and non-human primates, biological constructs of 'male' and 'female', sociobiological views of sex, the origins and evolution of sexually-transmitted diseases, and so on.

Specimen Preparation for Clinical Applications of X-Ray Microanalysis

1990 ◽  
Vol 48 (2) ◽  
pp. 328-329
Author(s):  
J.D. Shelburne ◽  
G.M. Roomans
Keyword(s):  
Carbon Coating ◽  
Clinical Applications ◽  
Point Of View ◽  
Practical Significance ◽  
Sweat Test ◽  
Specimen Preparation ◽  
Tissue Preparation ◽  
X Ray ◽  
Gallbladder Stones ◽  
Clinical Problems

Proper preparative procedures are a prerequisite for the validity of the results of x-ray microanalysis of biological tissue. Clinical applications of x-ray microanalysis are often concerned with diagnostic problems and the results may have profound practical significance for the patient. From this point of view it is especially important that specimen preparation for clinical applications is carried out correctly.Some clinical problems require very little tissue preparation. Hair, nails, and kidney and gallbladder stones may be examined and analyzed after carbon coating. High levels of zinc or copper in hair may be indicative of dermatological or systemic diseases. Nail clippings may be analyzed (as an alternative to the more conventional sweat test) to confirm a diagnosis of cystic fibrosis. X-ray microanalysis in combination with scanning electron microscopy has been shown to be the most reliable method for the identification of the components of kidney or gallbladder stones.A quantitatively very important clinical application of x-ray microanalysis is the identification and quantification of asbestos and other exogenous particles in lung.

Tauchnitz for Translators. The Circulation of English-language Literature in Finland

2019 ◽  
Vol 16 (2-3) ◽  
pp. 161-179
Author(s):  
Outi Paloposki
Keyword(s):  
Foreign Language ◽  
English Language ◽  
Book History ◽  
Language Skills ◽  
Point Of View ◽  
Book Production ◽  
German Publisher ◽  
Language Literature ◽  
Selection Of

The article looks at book production and circulation from the point of view of translators, who, as purchasers and readers of foreign-language books, are an important mediating force in the selection of literature for translation. Taking the German publisher Tauchnitz's series ‘Collection of British Authors’ and its circulation in Finland in the nineteenth and early twentieth century as a case in point, the article argues that the increased availability of English-language books facilitated the acquiring and honing of translators' language skills and gradually diminished the need for indirect translating. Book history and translation studies meet here in an examination of the role of the Collection in Finnish translators' work.

Sign in / Sign up

Export Citation Format

Share Document