Modified low-cycle fatigue (LCF) test

The fatigue test results obtained by the common low-cycle fatigue test (LCF) and its modified MLCF counterpart were presented. A satisfactory agreement of results was achieved for the two selected materials. With the MLCF method it is possible to examine from ten to twenty parameters using one single sample only. These parameters characterise the tested material in terms of its mechanical properties under the conditions of mechanical loads. Simultaneously, the study shows the implementation of the modified low-cycle fatigue test in practice

Lung region segmentation based on computer tomographic images

The article is written for the benefit of hospitals in order to identify segments of the lungs and thereby help in the process of bisecting lungs according to their respective segments during surgery. Further research in this area can also help in identification of various abnormalities related to each segment and also identify abnormal walls of unhealthy lungs. Segmentation of the lungs has not been implemented in reality, as the lung, being an organ with dynamic chest volumes during respiratory cycles, makes it impossible to address changes during respiration unlike fixed structures like the brain. Further, abnormalities situated on the walls of lung segments, make it more difficult to address volume changes concerned with the lungs. The author of this paper has provided a more effective method to identify various lung segments by using various well known segmentation techniques combined together to identify moving lung image segments more effectively

Assessment of dietary exposure to inorganic chloride, phosphate, and sulphate bread additives by ion chromatography with conductometric detection

Bread is one of basic human dietary items. Bread products commercially available usually contain flour, water, yeast or sourdough, and numerous functional additives, among them inorganic chlorides (mainly NaCl), phosphates, and sulphates, modifying physicochemical properties of final products to be attractive for consumers. Various kinds (whole-wheat, rye, and wheat rye) of Polish commercial breads were examined for contents of chlorides, phosphates, and sulphates by combination of water extraction and ion chromatography with conductometric detection. The evaluated amounts of the analytes corresponded to 0.58–1.06 g of chlorides (1–1.8 g NaCl), 100–300 mg of phosphates, and 10–130 mg of sulphates in 100 g (ca. two slices) of bread, which means that bread can be an important source of inorganic ions for humans, in particular in case of high consumption

Microstructure and properties of 308LSI steel obtained by deposition of metal wire

Shaped metal deposition (SMD) is a relatively new technology of additive manufacturing, which creates near-net shaped components by joining metallic materials by melting the area of a welding joint in high vacuum in the range from 10-3 to 10-6 mbar. In the present study, the main mechanical properties including micro-hardness and tensile properties were investigated. Single bead walls were deposited. Test pieces were machined from the deposited walls according to the National standard of Russia Federation for the mechanical tests. The tensile properties also showed dependence on the direction of the test carried out. All the examined tensile properties of the as deposited samples are close-matched properties of the as cast material

Разработка модели для определения наиболее вероятной длительности задач проекта методами нейронных сетей

Объектом проектирования и разработки является модель для определения наиболее вероятной длительности задач методами нейронных сетей и анализа рисков по задачам. В процессе исследования был проведён анализ рисков и разработан сервис для генерации факторов риска по задачам, на основании которого был произведён выбор модели для дальнейшей реализации. В результате был предложен нейросетевой модель который позволяет анализировать факторы по задачам и предсказывать трудозатраты. В ходе проведения анализа были подобраны такие параметры, при которых модель предсказывает трудозатраты с высокой точности.The object of design and development is a model for determining the most probable duration of tasks using neural networks and risk analysis for tasks. In the course of the research, a risk analysis was carried out and a service was developed for generating risk factors for tasks, on the basis of which a model was selected for further implementation. As a result, a neural network model was proposed that allows you to analyze factors by task and predict labor costs. In the course of the analysis, such parameters were selected at which the model predicts labor costs with high accuracy

Surface modification of structural materials by low-energy high-current pulsed electron beam treatment

Microstructure formation in surface layers of pure titanium and ferritic-martensitic steel subjected to electron beam treatment is studied. It is shown that low energy high-current pulsed electron beam irradiation leads to the martensite structure within the surface layer of pure titanium. Contrary, the columnar ferrite grains grow during solidification of ferritic-martensitic steel. The effect of electron beam energy density on the surface morphology and microstructure of the irradiated metals is demonstrated

The Watershed Source Book: Watershed-Based Solutions to Natural Resource Problems

1 v. (various pagings) : maps (2 folded) ; 28 cmhttps://scholar.law.colorado.edu/books_reports_studies/1052/thumbnail.jp