Scientific Review Engineering and Environmental Sciences最新文献_第5页

Prospects of electrosleep therapy devices for long-distance drivers 长途司机电睡眠治疗装置的展望

Scientific Review Engineering and Environmental Sciences Pub Date : 2020-12-26 DOI: 10.22630/pniks.2020.29.4.39

I. Kernytskyy, Orest Horbay, Ruslan Humenuyk, Y. Sholudko, Y. Storchun, Y. Yakovenko

{"title":"Prospects of electrosleep therapy devices for long-distance drivers","authors":"I. Kernytskyy, Orest Horbay, Ruslan Humenuyk, Y. Sholudko, Y. Storchun, Y. Yakovenko","doi":"10.22630/pniks.2020.29.4.39","DOIUrl":"https://doi.org/10.22630/pniks.2020.29.4.39","url":null,"abstract":"Accomulated exhaustion is a fairly common problem for long-distance truck and bus drivers on international routes. In case of uncompensated exhaustion, the driver is unable to overcome the resulting attention violations with will effort, which increases the probability of errors and accidents. The last claim is confirmed by the increase in the number of incidents after 7 h and especially 10 h of work. To overcome this problem, it is necessary to stop and fall asleep for a short time. Recovery comes in about 10–15 min of relaxation. The source of stimulation of the brain is weak impulse current, which causes sleep of varying depth and duration. Clinical studies have shown that the strongest impact is on pulses with a duration of approximately 0.3– –0.5 ms and a frequency of repetition ranging from 0.5–2 to 80–100 Hz. Current levels are typically between 50 and 5 mA. Transcranial electrotherapy is considered to stimulate endorphin production and affect the hypothalamus, causing changes in neurohormonal regulatory mechanisms and reticular formation of the brain stem. The reticular formation is involved in many behavioral reactions and has a significant impact on body functioning and thought processes. The aim of this work was to determine correlation between human brain biorhythms and electrosleep device signal by calculating mutual correlation. For this purpose, the model in MATLAB Simulink environment was developed. The encephalogram was processed using the EEGLAB tool to remove artifacts. A model in the MATLAB Simulink environment was developed to evaluate the effect of the signal characteristics of electrosleep therapy devices on brain biorhythms, with the help of which correlation coefficients were calculated.","PeriodicalId":38397,"journal":{"name":"Scientific Review Engineering and Environmental Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68303342","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

Consequences of improper renovation decisions in a 17th century half-timbered building 17世纪半木结构建筑翻修决策不当的后果

Scientific Review Engineering and Environmental Sciences Pub Date : 2020-12-26 DOI: 10.22630/pniks.2020.29.4.48

B. Nowogońska

引用次数: 3

Określenie charakteru i wartości ryzyka prac geodezyjnych z zastosowaniem logiki rozmytej 用模糊逻辑确定大地测量工程的性质和风险值

Scientific Review Engineering and Environmental Sciences Pub Date : 2020-12-16 DOI: 10.22630/pniks.2020.29.4.43

Magdalena Kowacka, A. Duchaczek, Dominika Dudziak-Gajowiak, D. Skorupka, Agnieszka Waniewska

引用次数: 0

Mortar for 3D printers using river sand, Portland cement and hydraulic lime 使用河砂、波特兰水泥和液压石灰的3D打印机砂浆

Scientific Review Engineering and Environmental Sciences Pub Date : 2020-12-16 DOI: 10.22630/pniks.2020.29.4.34

J. Palacios, Tito Castillo, Marcel Paredes, Oscar Paredes

引用次数: 1

Estimate the probability density function of maximum temperature for the Middle East 估计中东地区最高气温的概率密度函数

Scientific Review Engineering and Environmental Sciences Pub Date : 2020-12-16 DOI: 10.22630/pniks.2020.29.4.45

Iqbal Al-Ataby, A. Al-Tmimi

引用次数: 0

Odchylenia i wykonania budżetu oraz harmonogramu przedsięwzięć budowlanych monitorowanych przez nadzór bankowy na przykładzie budynków zbiorowego zamieszkania 银行监管监测的建设项目预算和进度的偏差和执行情况——以集体住宅为例

Scientific Review Engineering and Environmental Sciences Pub Date : 2020-12-16 DOI: 10.22630/pniks.2020.29.4.42

J. Konior, M. Szóstak

引用次数: 0

Preliminary investigations of rocks and soil at the lower reach of Al-Shor Wadi for water harvesting 浅滩河下游采水岩土初步调查

Scientific Review Engineering and Environmental Sciences Pub Date : 2020-12-01 DOI: 10.22630/pniks.2020.29.4.37

S. Al-Naqib, Kotayba T. Al-Youzbakey, Ali Sulaiman

引用次数: 0

Hydraulic analysis of gate valve using computational fluid dynamics (CFD) 基于计算流体动力学(CFD)的闸阀水力分析

Scientific Review Engineering and Environmental Sciences Pub Date : 2020-10-08 DOI: 10.22630/pniks.2020.29.3.23

E. Žic, Patrik Banko, L. Lešnik

{"title":"Hydraulic analysis of gate valve using computational fluid dynamics (CFD)","authors":"E. Žic, Patrik Banko, L. Lešnik","doi":"10.22630/pniks.2020.29.3.23","DOIUrl":"https://doi.org/10.22630/pniks.2020.29.3.23","url":null,"abstract":"As a very important element of most water supply systems, valves are exposed to the effects of strong hydrodynamic forces. When exposed to large physical quantities, the valve and piping can be damaged, which could endanger the performance of a water supply system. This is the main reason why it is necessary to foresee and determine the maximum values of velocity, pressure and other physical quantities that can occur in the system under certain conditions. Predicting extreme conditions allows us to correctly size the valve for the expected conditions to which the valve might be exposed, which is also the main objective of this paper. One of the methods for predicting and determining extreme values on a valve is to perform a simulation with computational fluid dynamics (CFD). This is exactly the method used in the preparation of this paper with the aim of gaining insight into the physical magnitudes for models of gate valves positioned inside a pipe under characteristic degrees of valve closure. The Ansys CFX 19.1 and Ansys Fluent 19.1 software was used to simulate the hydrodynamic analysis and obtain the required results. The hydrodynamic analysis was performed for four opening degrees of gate valve","PeriodicalId":38397,"journal":{"name":"Scientific Review Engineering and Environmental Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85586811","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: 4

Wpływ oczyszczalni ścieków na redukcję zanieczyszczeń odprowadzanych w czeskiej części dorzecza Odry 污水处理厂对减少奥德拉河流域捷克部分污染物排放的影响

Scientific Review Engineering and Environmental Sciences Pub Date : 2020-07-06 DOI: 10.22630/pniks.2020.29.2.11

Libor Ansorge, Elžbieta Čejka, Jiří Dlabal, Lada Stejskalová

引用次数: 3

Analysis of the convective available potential energy by precipitation over Iraq using ECMWF data for the period of 1989–2018 1989-2018年ECMWF资料对伊拉克降水对流有效势能的分析

Scientific Review Engineering and Environmental Sciences Pub Date : 2020-06-26 DOI: 10.22630/pniks.2020.29.2.17

O. Al-Taai, Zainab Abbood

{"title":"Analysis of the convective available potential energy by precipitation over Iraq using ECMWF data for the period of 1989–2018","authors":"O. Al-Taai, Zainab Abbood","doi":"10.22630/pniks.2020.29.2.17","DOIUrl":"https://doi.org/10.22630/pniks.2020.29.2.17","url":null,"abstract":"The rain is the most common type of precipitation in our atmosphere and when liquid droplet falls to the earth surface. The source of precipitation is water vapor, which is always present in the atmosphere in varying amounts; there are three major types of rain can be distinguished depending on the different factors that cause the airlifting and formation of clouds and rain falling as well as meteorology factors (Niwas, Singh, Singh, Khichar & Singh, 2006): Convectional rainfall: this type of rainfall occurs due to the ground surface heating. When the land warms up, it heats the air above it. This causes the air to expand and – rise. As the air rises it cools and condenses. If this process continues then rain will fall. Convectional rainfall occurs for a very short duration but occurs in the form of heavy showers. This type of rain is often accompanied by lightning and thunder. It is called ascending/rising rain because it is the result of a rising process of the atmosphere, which is exposed to thermal heating and clouds resulting from this type cumulus and cumulonimbus (Saxena & Gupta, 2017). Cyclonic/Frontal rainfall: this type of rainfall occurs when a warm and moist air mass (warm front) meets a cold and dry air mass (cold front). When both masses come together, warmer air is forced to rise over cold air. The moist warm air condenses as it cool, which causes cloud and rain. When there are condensation nuclei and when the atmosphere arrives at saturation – Scientifi c Review – Engineering and Environmental Sciences (2020), 29 (2), 196–211 Sci. Rev. Eng. Env. Sci. (2020), 29 (2) Przegląd Naukowy – Inżynieria i Kształtowanie Środowiska (2020), 29 (2), 196–211 Prz. Nauk. Inż. Kszt. Środ. (2020), 29 (2) http://iks.pn.sggw.pl DOI 10.22630/PNIKS.2020.29.2.17","PeriodicalId":38397,"journal":{"name":"Scientific Review Engineering and Environmental Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76506351","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