scholarly journals Analysis on the Possibility of Eliminating Interference from Paraseismic Vibration Signals Induced by the Detonation of Explosive Materials

Sensors ◽  
2020 ◽  
Vol 20 (21) ◽  
pp. 6401
Author(s):  
Józef Pyra ◽  
Maciej Kłaczyński ◽  
Rafał Burdzik
Keyword(s):  
Acoustic Waves ◽  
Vibration Signal ◽  
Test Results ◽  
Subtraction Method ◽  
Reverberation Chamber ◽  
Explosive Materials ◽  
Short Time ◽  
Spectral Subtraction Method ◽  
The Impact ◽  
Made In

This article presents the results of studies on the impact of acoustic waves on geophones and microphones used to measure airblasts carried out in a reverberation chamber. During the tests, a number of test signals were generated, of which two are presented in this article: frequency-modulated sine (sine sweep) waves in the 30–300 Hz range, and the result of detonating 3 g of pyrotechnic material inside the chamber. Then, based on the short-time Fourier transform, the spectral subtraction method was used to remove unwanted disruption interfering with the recorded signal. Using MATLAB software, a program was written that was calibrated and adapted to the specifics of the measuring equipment based on the collected test results. As a result, it was possible to clean the signals of interference and obtain a vibration signal propagated by the substrate. The results are based on signals registered in the laboratory and made in field conditions during the detonation of explosive materials.

scholarly journals Testing of Confining Pressure Impacton Explosion Energy of Explosive Materials

2017 ◽  
Vol 62 (2) ◽  
pp. 385-396 ◽  
Author(s):  
Jan Drzewiecki ◽  
Jacek Myszkowski ◽  
Andrzej Pytlik ◽  
Mateusz Pytlik
Keyword(s):  
Occupational Safety ◽  
Initial Pressure ◽  
Confining Pressure ◽  
Hard Coal ◽  
Test Results ◽  
Explosive Materials ◽  
Hard Coal Mining ◽  
Explosive Charges ◽  
Pressure Changes ◽  
The Impact

Abstract This paper presents the results of testing the explosion effects of two explosive charges placed in an environment with specified values of confining pressure. The aim of this study is to determine the impact of variable environmental conditions on the suitability of particular explosives for their use in the prevention of natural hazards in hard coal mining. The research results will contribute to improving the efficiency of currently adopted technologies of natural hazard prevention and aid in raising the level of occupational safety. To carry out the subject matter measurements, a special test stand was constructed which allows the value of the initial pressure inside the chamber, which constitutes its integral part, to be altered before the detonation of the charge being tested. The obtained characteristics of the pressure changes during the explosion of the analysed charge helped to identify the work (energy) which was produced during the process. The test results are a valuable source of information, opening up new possibilities for the use of explosives, the development of innovative solutions for the construction of explosive charges and their initiation.

scholarly journals Condensation of refrigerant R407C in multiport minichannel section

2016 ◽  
Vol 37 (4) ◽  
pp. 3-18
Author(s):  
Tadeusz Bohdal ◽  
Henryk Charun ◽  
Małgorzata Sikora
Keyword(s):  
Heat Transfer ◽  
Heat Exchangers ◽  
Flow Resistance ◽  
State Of The Art ◽  
Condensation Process ◽  
Test Results ◽  
Pressure Drops ◽  
The Impact ◽  
Made In

AbstractAnalysis of the state of-the-art in research of refrigerant condensation in miniature heat exchangers, so-called multiports, was made. Results of refrigerant R407C condensation in a mini condenser made in the form of two bundles of tubular minichannels from stainless steel with an inside diameter 0.64 mm and length 100 mm have been presented. Two exchangers consisted of four minichannels and 8 minichannels have been investigated. The values of average heat transfer coefficient and frictional pressure drops throughout the condensation process were designated. The impact of the vapor quality of refrigerant and the mass flux density on the intensity of heat transfer and flow resistance were illustrated. A comparative analysis of test results for various refrigerants in both mini heat exchangers were made.

a Taskboard System Based On Website (Case Study: CV Nukegraphic Indonesia)

Tech-E ◽  
2018 ◽  
Vol 1 (2) ◽  
pp. 10
Author(s):  
Ceng Giap Yo ◽  
Dennie
Keyword(s):  
Information Technology ◽  
Test Results ◽  
Work Process ◽  
Web Based ◽  
Task List ◽  
The Status ◽  
Short Time ◽  
A Company ◽  
Made In

CV. Nukegraphic Indonesia as one of the fast growing website in Indonesia would require a lot of support, including support in the field of Information Technology. Recording task list that still use manual systems, often prevent the processing of information about the details of the status of the task and the status of projects ongoing or already completed in the form of a percentage of each project, as well as recording task that still use paper media is also considered only will lead to waste in paper usage. Recording task that is only made in the scope of the company's staff also hinder the work process of the company when staff are outside the company. The method used in the manufacture of a web-based application taskboard this form of collecting data through observation and questionnaires were distributed in the scope of the company. The test results of these applications concluded that with the application taskboard-based website is an account executive can find out information about the details of the status and the status of the project in a short time, because the data processing has been made into a computerized provided through the application, both an account executive and members are also more easy in knowing the task that must be done even though it is outside the company. With this application is expected to help the performance of employees in a company to be more productive

scholarly journals Learning Strategies for SD Muhammadiyah 1 Sidoarjo in the Midst of the Covid-19 Pandemic

2021 ◽  
Vol 10 ◽  
Author(s):  
Winaldha Maulina ◽  
Muhlasin Amrullah
Keyword(s):  
Learning Strategies ◽  
Scientific Work ◽  
Educational Transformation ◽  
Face To Face ◽  
History Learning ◽  
Face To Face Learning ◽  
Negative Impacts ◽  
Short Time ◽  
The Impact ◽  
Made In

The purpose of this study is to find out how the strategies used in SD Muhammadiyah 1 Sidoarjo in the covid 19 pandemic. This scientific work examines various aspects, including: history, learning strategies in SD Muhammadiyah 1 Sidoarjo. This research is a descriptive qualitative research. The technique of collecting data and research is through interviews, and observations. Based on the results of research from SD Muhammadiyah 1 Sidoarjo, online learning only lasted for a short time, then the school held face-to-face learning but it was not as effective as before. The impact that has arisen due to COVID-19 on education has changed the education system and curriculum. The curriculum is made in such a way as not to burden students. Apart from the negative impacts, there are also positive impacts, including 1) Teachers become more familiar with technology 2) The emergence of unlimited creativity 3) Trigger the acceleration of educational transformation.

scholarly journals PENGARUH KEPEMIMPINAN DAN KEPUASAN KERJA TERHADAP KINERJA PEGAWAI DINAS PEKERJAAN UMUM KABUPATEN SOLOK SELATAN DENGAN MOTIVASI KERJA SEBAGAI VARIABEL MODERATING

2020 ◽  
Author(s):  
Hendra Rianto
Keyword(s):  
Job Satisfaction ◽  
Work Motivation ◽  
Employee Performance ◽  
Public Works ◽  
Test Results ◽  
The Public ◽  
The Impact ◽  
The Relationship ◽  
Variable Performance ◽  
Made In

This paper aims are to know about the effect of leadership to the Performance of the Public Works Department employee in South Solok, effect job satisfaction to employee performance at the Department of Public Works South Solok, the effect leadership on work motivation at the Department of Public Works South Solok, the effect of job satisfaction on work motivation at the Department of Public Works South Solok, job satisfaction and leadership on the Performance of the Public Works Department employee in South Solok and What is the impact of motivation on the performance of the Department of Public Works South Solok than Does Work motivation mediates the relationship between leadership and employee performance at the Department of Public Works South Solok The test results hypothesis find job satisfaction did not significantly affect the variable Performance ( Y ) is this does not mean that the variable Performance ( Y ) Department of Public Works of South Solok not influenced by variable Job satisfaction , but his current condition working satisfaction at the Department of Public Works South Solok has been good . The efforts need to be made in improving the performance ( Y ) in the Office of Public Works South Solok is to maintain existing levels of job satisfaction now and continue to try to improve.

Model estimates of the results of diabetes patients using modern glucometers with tri-color technology for displaying test results

2019 ◽  
pp. 81-89
Author(s):  
Larisa Dmitrievna Popovich ◽  
Svetlana Valentinovna Svetlichnaya ◽  
Aleksandr Alekseevich Moiseev
Keyword(s):  
Diabetes Mellitus ◽  
Type 2 Diabetes ◽  
Type 1 Diabetes ◽  
Economic Benefits ◽  
Test Results ◽  
Self Monitoring ◽  
Patients With Diabetes ◽  
The Impact

Diabetes – a disease in which the effect of the treatment substantially depends on the patient. Known a study showed that the use of glucometers with the technology of three-color display of test results facilitates self-monitoring of blood sugar and leads to a decrease in glycated hemoglobin (HbAlc). Purpose of the study: to modeling the impact of using of a glucometer with a color-coded display on the clinical outcomes of diabetes mellitus and calculating, the potential economic benefits of reducing the hospitalization rate of patients with diabetes. Material and methods. Based on data from two studies (O. Schnell et al. and M. Baxter et al.) simulation of the reduction in the number of complications with the use of a glucometer with a color indication. In a study by O. Schnell et al. a decrease of HbA1c by 0.69 percent is shown when using the considered type of glucometers, which was the basis of the model. Results. In the model, the use of a glucometer with a color-coded display for type 1 diabetes led to a decrease in the total number of complications by 9.2 thousand over 5 years per a cohort of 40 thousand patients with different initial levels of HbA1c. In a cohort of 40 thousand patients with type 2 diabetes, the simulated number of prevented complications was 1.7 thousand over 5 years. When extrapolating these data to all patients with diabetes included in the federal register of diabetes mellitus (FRD), the number of prevented complications was 55.4 thousand cases for type 1 diabetes and 67.1 thousand cases for type 2 diabetes. The possible economic effect from the use of the device by all patients with a diagnosis of diabetes, which are included in the FRD, estimated at 1.5 billion rubles for a cohort of patients with type 1 diabetes and 5.3 billion rubles for patients with type 2 diabetes. Conclusion. Improving the effectiveness of self-monitoring, which is the result of the use of glucometers with color indicators, can potentially significantly reduce the incidence of complications in diabetes and thereby provide significant economic benefits to society.

ЦИФРОВОЙ ИЗОЛЯТОР В СПЕЦИАЛИЗИРОВАННОМ КОРПУСЕ, ВЫПОЛНЕННОМ ПО ТЕХНОЛОГИИ LTCC

2020 ◽  
Vol 96 (3s) ◽  
pp. 392-395
Author(s):  
В.А. Бутузов ◽  
А.Е. Назаренко ◽  
Н.Ю. Дмитриев ◽  
В.А. Трофимов ◽  
В.А. Косевский ◽  
...  
Keyword(s):  
Low Temperature ◽  
Data Rate ◽  
Test Results ◽  
Made In

Представлены результаты разработки цифрового изолятора на основе интегрального микротрансформатора в специализированном корпусе, выполненном по технологии низкотемпературной совместно обжигаемой керамики (LTCC). Согласно результатам измерений тестовых образцов максимальная скорость передачи данных разработанного цифрового изолятора - не менее 30 Мбит/с. The paper presents the results of the development of a digital insulator based on an integral microtransformer in a specialized package made in technology of low-temperature co-fired ceramics. The isolator is a microassembly consisting of a transceiver chip and an integrated transformer. According to the test results, the maximum data rate speed of the developed digital insulator is not less than 30 Mbit/s.

scholarly journals Synthesis of Metal Organic Frameworks by Ball-Milling

Crystals ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 15
Author(s):  
Cheng-An Tao ◽  
Jian-Fang Wang
Keyword(s):  
Ball Milling ◽  
Large Scale ◽  
Raw Materials ◽  
Metal Organic Frameworks ◽  
Research Topic ◽  
Mass Ratio ◽  
Time Consumption ◽  
Metal Organic ◽  
Short Time ◽  
Made In

Metal-organic frameworks (MOFs) have been used in adsorption, separation, catalysis, sensing, photo/electro/magnetics, and biomedical fields because of their unique periodic pore structure and excellent properties and have become a hot research topic in recent years. Ball milling is a method of small pollution, short time-consumption, and large-scale synthesis of MOFs. In recent years, many important advances have been made. In this paper, the influencing factors of MOFs synthesized by grinding were reviewed systematically from four aspects: auxiliary additives, metal sources, organic linkers, and reaction specific conditions (such as frequency, reaction time, and mass ratio of ball and raw materials). The prospect for the future development of the synthesis of MOFs by grinding was proposed.

Handshake antimicrobial stewardship as a model to recognize and prevent diagnostic errors

Diagnosis ◽  
2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Justin B. Searns ◽  
Manon C. Williams ◽  
Christine E. MacBrayne ◽  
Ann L. Wirtz ◽  
Jan E. Leonard ◽  
...  
Keyword(s):  
Antimicrobial Stewardship ◽  
Interrater Reliability ◽  
Diagnostic Errors ◽  
Diagnostic Error ◽  
Primary Treatment ◽  
Treatment Team ◽  
Children's Hospital ◽  
Children’S Hospital ◽  
The Impact ◽  
Made In

AbstractObjectivesFew studies describe the impact of antimicrobial stewardship programs (ASPs) on recognizing and preventing diagnostic errors. Handshake stewardship (HS-ASP) is a novel ASP model that prospectively reviews hospital-wide antimicrobial usage with recommendations made in person to treatment teams. The purpose of this study was to determine if HS-ASP could identify and intervene on potential diagnostic errors for children hospitalized at a quaternary care children’s hospital.MethodsPreviously self-identified “Great Catch” (GC) interventions by the Children’s Hospital Colorado HS-ASP team from 10/2014 through 5/2018 were retrospectively reviewed. Each GC was categorized based on the types of recommendations from HS-ASP, including if any diagnostic recommendations were made to the treatment team. Each GC was independently scored using the “Safer Dx Instrument” to determine presence of diagnostic error based on a previously determined cut-off score of ≤1.50. Interrater reliability for the instrument was measured using a randomized subset of one third of GCs.ResultsDuring the study period, there were 162 GC interventions. Of these, 65 (40%) included diagnostic recommendations by HS-ASP and 19 (12%) had a Safer Dx Score of ≤1.50, (Κ=0.44; moderate agreement). Of those GCs associated with diagnostic errors, the HS-ASP team made a diagnostic recommendation to the primary treatment team 95% of the time.ConclusionsHandshake stewardship has the potential to identify and intervene on diagnostic errors for hospitalized children.

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