Bulletin of the Military University of Technology最新文献_第8页

Fractionation of biological micro-particles in the field of gravity and the field of centrifugal forces 生物微粒在重力场和离心力场中的分馏

Bulletin of the Military University of Technology Pub Date : 2019-03-29 DOI: 10.5604/01.3001.0013.1477

A. Górka

{"title":"Fractionation of biological micro-particles in the field of gravity and the field of centrifugal forces","authors":"A. Górka","doi":"10.5604/01.3001.0013.1477","DOIUrl":"https://doi.org/10.5604/01.3001.0013.1477","url":null,"abstract":"The paper presents the basic relationships describing the state of boundary equilibrium of fractions isolated in the process of fractionation of binary biological mixtures formed on the warp of homogeneous base solution in the gravitation field and in the vortex reference system. The state of boundary equilibrium of fractions is described by equations of the mass equilibrium, gravity forces, centrifugal forces and buoyancy forces related to particular fractions and the whole mixture of microparticles. It describes the final stage of fractionation of the microparticles, in which the microparticles in the mixture no longer emigrate. In the analysis we used an example of fractional distribution created in the blood fractionation process and the examples of calculations presented in the article, which refer to this distribution.\u0000The calculations showed that fractionation in the field of centrifugal force forms fractions with increased density of selected groups of cells of similar specific masses.\u0000Keywords: fractionation of mixtures, sedimentation of mixtures, separation of blood components in the gravity field, separation of blood components in the field of centrifugal force, blood centrifugation, medical centrifuges, homogeneous biological mixtures, heterogeneous biological mixtures, centrifugal force field.\u0000\u0000","PeriodicalId":232579,"journal":{"name":"Bulletin of the Military University of Technology","volume":"89 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128787731","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Estimating the performance efficiency of ERP system with the relational database in a heterogenic environment 异构环境下基于关系数据库的ERP系统性能效率评估

Bulletin of the Military University of Technology Pub Date : 2019-03-29 DOI: 10.5604/01.3001.0013.1465

J. Dorożyński, Maciej Przepiórka

引用次数: 0

Artificial intelligence for software development — the present and the challenges for the future 软件开发中的人工智能——现状与未来的挑战

Bulletin of the Military University of Technology Pub Date : 2019-03-29 DOI: 10.5604/01.3001.0013.1464

Łukasz Korzeniowski, K. Goczyła

引用次数: 3

Research on lubricity of oils containing the hexagonal boron nitride 含六方氮化硼油的润滑性研究

Bulletin of the Military University of Technology Pub Date : 2019-03-29 DOI: 10.5604/01.3001.0013.1476

Szymon Senyk, Maciej Perehubka, T. Kałdoński

{"title":"Research on lubricity of oils containing the hexagonal boron nitride","authors":"Szymon Senyk, Maciej Perehubka, T. Kałdoński","doi":"10.5604/01.3001.0013.1476","DOIUrl":"https://doi.org/10.5604/01.3001.0013.1476","url":null,"abstract":"The paper presents the test results of lubricity properties of Hydrol L-HL 32 hydraulic oil, Mobilube 1 SHC 75w-90 gear oil, and two base oils: SN-150 and SN-650, containing hexagonal boron nitride.\u0000To conduct the required tests, a four ball machine was used. This device is commonly used when assessing lubricity properties of oils and greases.\u0000The following normative lubricity parameters were defined: the value of welding point Pz [daN], the value of last non-seizing load Pn [daN], the value of seizing at smoothy growing load Pt [daN], as well as the wear limiting capacity load Goz [daN/mm2]. Furthermore, several non-normative tests were completed that covered indication of two parameters making it possible to complete an assessment of lubricity properties of oils.\u0000Based on the tests, it was determined that hexagonal boron nitride is a good additive that improves lubricity properties. Improvement in the above properties was recorded both in the case of hydraulic oil and gear oil, as well as oil bases. Relatively better improvement results were obtained in the case of oil bases, where the improvement in the results after using boron nitride, was more visible than in the case of hydraulic and gear oil. The best improvement results for hydraulic oil were obtained after adding 4% h-BN, whereas in the case of the SN-150 oil base, this value was 2% h-BN. The best improvement results for gear oil and SN-650 oil base were also obtained after adding 4% h-BN. The possibility of using the values of h-BN bigger than 4% was excluded. It was determined that bigger content of h-BN in oil generates negative effects (under four ball conditions).\u0000Keywords: tribology, lubricity, boron nitride.\u0000\u0000","PeriodicalId":232579,"journal":{"name":"Bulletin of the Military University of Technology","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126267963","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Application of Neural Networks in the Tests of Hand Grenade Fuses 神经网络在手榴弹引信试验中的应用

Bulletin of the Military University of Technology Pub Date : 2019-03-29 DOI: 10.5604/01.3001.0013.1480

Dariusz Ampuła

{"title":"Application of Neural Networks in the Tests of Hand Grenade Fuses","authors":"Dariusz Ampuła","doi":"10.5604/01.3001.0013.1480","DOIUrl":"https://doi.org/10.5604/01.3001.0013.1480","url":null,"abstract":"The neural networks, which find currently use in the unusually wide range of problems, in such fields as: finance, medicine, geology or physics, were characterized in the article. It was accent, that neural networks are very sophisticated technique of modelling, able to map extremely complex functions. It was noticed particularly, that neural networks had a non-linear character, what very essentially improve the possibilities of their applications.\u0000Some previous applications of neural networks were introduced, both in the area of domestic and foreign, including also military applications.\u0000The fuse of UZRGM type (Universal Modernized Fuse of Hand Grenades) was characterized, describing his building and way of action, special attention-getting on the tested features during laboratory diagnostic tests.\u0000Necessary technical parameters for the first and the second laboratory diagnostic tests, whose purpose was to build two independent neural networks, on the basis of existing test results and undertaken post-diagnostic decisions were designed. A few artificial neural networks were made and finally the best two independent neural networks were chosen. The main parameters of the chosen active neural networks were introduced in the pictures.\u0000Concise information, relating to the built artificial neural networks, for the first and the second laboratory diagnostic tests of the fuses of UZRGM type, was presented in the end of the article. In the summary, clearly distinguished are advantages of the applications of the proposed evaluation method, which significantly shortens an evaluation process of new empirical test results and causes complex automatization of an evaluation process of the tested fuses.\u0000Keywords: artificial intelligence, neural networks, activation function, hidden neurons, fuse.\u0000\u0000","PeriodicalId":232579,"journal":{"name":"Bulletin of the Military University of Technology","volume":"8 38","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113931769","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Analysis of residual stress in 1.4539 austenitic steel joints welded with TIG method TIG法焊接1.4539奥氏体钢接头残余应力分析

Bulletin of the Military University of Technology Pub Date : 2019-03-29 DOI: 10.5604/01.3001.0013.1468

B. Nasiłowska, Z. Bogdanowicz, G. Mońka, Rafał Tomaszewski, J. Zdunek

引用次数: 0

Numerical analysis of interaction between a model tunnel lining and non-cohesive soil 模型隧道衬砌与非粘性土相互作用的数值分析

Bulletin of the Military University of Technology Pub Date : 2019-03-29 DOI: 10.5604/01.3001.0013.1479

P. Szklennik

{"title":"Numerical analysis of interaction between a model tunnel lining and non-cohesive soil","authors":"P. Szklennik","doi":"10.5604/01.3001.0013.1479","DOIUrl":"https://doi.org/10.5604/01.3001.0013.1479","url":null,"abstract":"The paper presents an analysis and assessment of an interaction between a model tunnel lining and surrounding non-cohesive soil. The analysis was conducted with numerical simulations using the author’s program based on an algorithm of the discrete element method. Previously calibrated numerical model was used in the calculations. Calibration was based on comparison of the construction deformations observed in the laboratory tests and during the simulation. Numerous simulations, performed in the calibrated numerical model, included calculations for a flexible and rigid construction of the lining. The tunnel construction loads, stress distribution in the surrounding soil, and soil particles’ displacements were investigated. Analyses were conducted in two variants — when only soil weight is acting on the tunnel construction and when the external load transmitted from the surface is present. Also two variants of the backfill height were investigated — they were equal to one and two diameters of the tunnel. The values of tunnel loads, which were numerically calculated, were compared with the corresponding values, calculated by the Hewett’s method. It is shown that distribution of tunnel loads and stresses in the surrounding soil is strongly linked with the tunnel construction stiffness, thus it can be significantly different from standard load situations for such constructions.\u0000Keywords: civil engineering, discrete element method, tunnel lining\u0000\u0000","PeriodicalId":232579,"journal":{"name":"Bulletin of the Military University of Technology","volume":"141 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122065274","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Deanonymization of bitcoin cryptocurrency users 比特币加密货币用户的去匿名化

Bulletin of the Military University of Technology Pub Date : 2019-03-29 DOI: 10.5604/01.3001.0013.1466

Przemysław Rodwald, W. Sobolewski, Maja Rodwald

引用次数: 1

The use of 5-aminolevulinic acid and its derivatives in photodynamic therapy and diagnosis 5-氨基乙酰丙酸及其衍生物在光动力治疗和诊断中的应用

Bulletin of the Military University of Technology Pub Date : 2018-12-31 DOI: 10.5604/01.3001.0012.8498

A. Romiszewska, A. Bombalska

引用次数: 2

Basics of the electropiezoelasticity theory of piezoelectric motors with linear and rotary motion 具有直线和旋转运动的压电马达的电压电弹性理论基础

Bulletin of the Military University of Technology Pub Date : 2018-12-31 DOI: 10.5604/01.3001.0012.8504

W. Przyborowski

{"title":"Basics of the electropiezoelasticity theory of piezoelectric motors with linear and rotary motion","authors":"W. Przyborowski","doi":"10.5604/01.3001.0012.8504","DOIUrl":"https://doi.org/10.5604/01.3001.0012.8504","url":null,"abstract":"The paper presents the basics of the theory of electropiezoelasticity and adaptation of this\u0000theory to description of the simplest electromechanical converters − piezoelectric type electric motors.\u0000Because piezoelectricity and elasticity are coupled by complex piezoelasticity constitutive compounds,\u0000the formulation of a general mathematical model for these motors is not possible. Therefore, equations\u0000for structurally simple piezoelectric motors with linear and rotational motion have been formulated\u0000in the paper. Motors with linear movement are characterized by a flat or tube form. Rotary motors,\u0000on the other hand, have a cylindrical or disc-shaped form.\u0000The electric field, in the adopted forms of piezoelectric motors generating a piezoelectric effect, is\u0000a single-field perpendicular to the direction of motion.\u0000The determined equations could be simplified by reduction of some constitutive parameters, but it\u0000requires a detailed analysis of material compounds and consideration in the interactions of forces\u0000and torques in these motors, also strong piezoelectric stresses, which determine a specific kinetics.\u0000Keywords: piezoelectric motors with translational and rotary motion, equations of electric-piezoelasticity.\u0000\u0000","PeriodicalId":232579,"journal":{"name":"Bulletin of the Military University of Technology","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125001919","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0