Application of Infrared Thermography to Non-Contact Testing of Varistors

Abstract Testing of varistors using thermography was carried out in order to assess their protective properties against possible overvoltage phenomena in the form of high-level voltage surges. An advantage of the thermography technique is non-contact temperature measurement. It was proposed to assess the properties of varistors working in electronic devices as protective elements, on the basis of estimating temperature increments on varistor surfaces, registered by an infrared camera during surge resistance tests with standard voltage levels. To determine acceptable temperature increments on a tested varistor, preliminary testing was performed of P22Z1 (Littelfuse) and S07K14 (EPCOS) type varistors, working first at a constant load and presently during surge tests,. The thermographic test results were compared with measured varistor capacity values before and after tests. It was found that recording with thermography temperature increments greater than 6°C for both P22Z1 and S07K14 varistor types detects total or partial loss of varistor protective properties. The test results were confirmed by assessment of protective properties of varistors working in output circuits of low nominal voltage devices.

Download Full-text

A Comparative Clinical Study of Trikarshika Kwatha with and without Lifestyle Modification in the Management of Vatarakta with Special Reference to Hyperuricaemia

International Journal of Ayurveda and Pharma Research ◽

10.47070/ijapr.v9isuppl1.2106 ◽

2021 ◽

pp. 10-19

Author(s):

Md Tanzil Ansari ◽

Sukumar Ghosh ◽

Shailendra Kumar Singh

Keyword(s):

Clinical Study ◽

Lifestyle Modification ◽

Test Results ◽

Before And After ◽

Comparative Clinical Study ◽

Group A ◽

Group B ◽

High Level ◽

Urate Crystals

Nowadays, people are more vulnerable to metabolic disorders due to their faulty dietary and behavioural habits. One such disorder is Vatarakta which causes functional impairment due to involvement of Sandhi (joints). It is manifested by Ruk, Toda, Sparsha asahatva, Shopha, Raga, Daha and Stabdhata in Sandhi. Vatarakta can be correlated with Hyperuricaemia or Gout due to similarity in their clinical features. Hyperuricaemia is defined as abnormally high level of uric acid in blood (i.e. >6mg/dl in female and >7mg/dl in male). On the other hand, Gout is an inflammatory response to monosodium urate crystals formed secondary to hyperuricaemia. Aims and objectives: 1. To evaluate the effectiveness of Trikarshika kwatha and lifestyle modification in the management of Vatarakta. 2. To compare the effects of Trikarshika kwatha with and without lifestyle modification in the management of Vatarakta. Materials and methods: Raw herbs of the research formulation were collected after proper identification and Kwatha was prepared for oral administration. For the clinical study, total 60 patients were selected on the basis of selection criteria. Selected patients were randomly divided into two groups. (i) Group A: 30 patients were treated with Trikarshika kwatha. (ii) Group B: 30 patients were treated with Trikarshika kwatha along with Lifestyle modification. Individual patient was treated for 45 days along with follow up at the interval of every 15 days. To assess the effectiveness of treatment, scoring pattern was followed for subjective and objective parameters. They were assessed before and after treatment. The collected data were analysed statistically by using Paired t-test. Results: On the basis of all statistical data, it can be said that patients of Group B showed better results in all parameters in comparison to patients of Group A. Conclusion: Both Trikarshika kwatha and Lifestyle modification are affective but Trikarshika kwatha with Lifestyle modification is more effective than Trikarshika kwatha without Lifestyle modification in the management of Vatarakta.

Download Full-text

Sleeve Gastrectomy vs. Fundus Resection in Bariatric Surgery (Animal Study)

Shiraz E-Medical Journal ◽

10.5812/semj.95198 ◽

2020 ◽

Vol 21 (6) ◽

Author(s):

Alimohammad Bananzadeh ◽

Seyed Vahid Hosseini ◽

Hajar Khazraei ◽

Mohammad Mehdi Lashkarizadeh ◽

Leila Ghahramani ◽

...

Keyword(s):

Bariatric Surgery ◽

Weight Loss ◽

Sleeve Gastrectomy ◽

Body Weight Loss ◽

Test Results ◽

Significant Difference ◽

Before And After ◽

Total Ghrelin ◽

The Difference ◽

High Level

Background: Bariatric surgery has resulted in body weight loss, which claimed by surgery removal specific parts of the stomach with enzyme or sleeve gastrectomy. Objectives: The aim of this study is to determine weight loss and endocrine changes by 12-week fundus resection and sleeve gastrectomy in rabbits. Methods: Twenty-one rabbits, weighing 2.5 - 3.5 kg, were divided into three groups (n = 7): sleeve gastrectomy, experimental fundus resection, and sham group. The weight of rabbits and total ghrelin and leptin levels in the plasma before and after surgery were measured in 12 weeks. Statistical analyses were performed using the Kruskal-Walis test for comparison of the means between the groups, and the difference after months in one group was assayed by Friedman test. Results: The results showed sleeve gastrectomy had a significant weight loss after one month when compared to fundus resection and sham-operated controls (P = 0.008). There was no significant difference in the ghrelin levels after these surgeries, but leptin levels decreased significantly after the fundectomy (P = 0.025). Conclusions: Sleeve gastrectomy is more efficient than the fundus resection in weight loss. It could be suggested as a new option in metabolic disorders due to the high level of leptin.

Download Full-text

Shield Effect Of Functional Interlining Fabric

Autex Research Journal ◽

10.1515/aut-2015-0014 ◽

2015 ◽

Vol 15 (2) ◽

pp. 93-98 ◽

Cited By ~ 1

Author(s):

Bosiljka Šaravanja ◽

Krešimir Malarić ◽

Tanja Pušić ◽

Darko Ujević

Keyword(s):

Electromagnetic Interference ◽

Electronic Devices ◽

Scanning Electron Microscopy Micrographs ◽

Dry Cleaning ◽

Protective Properties ◽

Protection Efficiency ◽

Degree Of Protection ◽

Functional Textiles ◽

Before And After ◽

Cleaning Treatment

AbstractElectromagnetic interference (EMI) have become very serious in a variety of different electronic equipments, such as personal computers (frequency at several GHz), mobile devices (0.9 – 2.4 GHz) and similar. This imposes the need for setting boundaries for EM emission of electric and electronic devices in order to minimize the possibility of interference with radio and wireless communications. Functional textiles can offer protective properties against EM radiation. The aim of this study is to investigate the degree of protection against EM radiation provided by polyamide copper-coated interlining fabric before and after dry cleaning treatment. EM protection efficiency of the interlining functional fabric is explored on both sides at the frequencies of 0.9; 1.8; 2.1 and 2.4 GHz. The results obtained have shown that the interlining fabric has good protective properties against EM radiation, but after dry cleaning, treatment reduction is observed. Scanning electron microscopy micrographs of the interlining surface confirms shield effect decline due to degradation and firing of the copper layers during the process of dry cleaning.

Download Full-text

Peculiarities of young basketball players physiсal skills development

KANT ◽

10.24923/2222-243x.2020-36.67 ◽

2020 ◽

Vol 36 (3) ◽

pp. 362-366

Author(s):

Gelshigan Populo ◽

Alena Podlubnaya

Keyword(s):

Skills Development ◽

Scientific Article ◽

Test Results ◽

Present Stage ◽

Basketball Players ◽

Competitive Activity ◽

Before And After ◽

Sport Teams ◽

High Level

Current situation in Russian sport makes it obvious for the most experts that the primary task at the present stage in all sports is to improve the quality of sports "reserves". An unprecedented increase in the volume and intensity of training and competitive activity, as well as a high level of competition in national and other sport teams creating, makes special, increased demands on all aspects of the basketball players' abilities. This work is devoted to the most important part of training young basketball players - the development of basic physical qualities that contribute to the full implementation of the technical and tactical arsenal of 10-12 year old players. The article describes the methodology of training the physical qualities of young basketball players, as well as informative tests aimed at determining the level of development of physical qualities before and after the experiment. The authors of the scientific article carry out a comparative analysis of the test results and confirm their hypothesis.

Download Full-text

A Large Block Heater Test for High Level Nuclear Waste Management,

MRS Proceedings ◽

10.1557/proc-353-411 ◽

1994 ◽

Vol 353 ◽

Cited By ~ 2

Author(s):

Wunan Lin ◽

D. G. Wilder ◽

J. A. Blink ◽

S. C. Blair ◽

T. A. Buscheck ◽

...

Keyword(s):

Nuclear Waste ◽

Near Field ◽

Radioactive Decay ◽

Test Site ◽

Constant Load ◽

Large Block ◽

Field Environment ◽

Before And After ◽

Pressure Chemical ◽

High Level

AbstractThe radioactive decay heat from nuclear waste packages may, depending on the thermal load, create coupled thermal-mechanical-hydrological-chemical (TMHC) processes in the near-field environment of a repository. A group of tests on a large block (LBT) are planned to provide a timely opportunity to test and calibrate some of the TMHC model concepts. The LBT is advantageous for testing and verifying model concepts because the boundary conditions are controlled, and the block can be characterized before and after the experiment. A block of Topopah Spring tuff of about 3 × 3 × 4.5 m was sawed and isolated at Fran Ridge, Nevada Test Site. Small blocks of the rock adjacent to the large block were collected for laboratory testing of some individual thermal-mechanical, hydrological, and chemical processes. A constant load of about 4 MPa will be applied to the top and sides of the large block. The sides will be sealed with moisture and thermal barriers. The large block will be heated by heaters within and guard heaters on the sides so that a dry-out zone and a condensate zone will exist simultaneously. Temperature, moisture content, pore pressure, chemical composition, stress, and displacement will be measured throughout the block during the heating and cool-down phases. The results from the experiments on small blocks and the tests on the large block will provide a better understanding of some concepts of the coupled TMHC processes. The progress of the project is presented in this paper.

Download Full-text

Comparing Regional Distribution Equity among Doctors in China before and after the 2009 Medical Reform Policy: A Data Analysis from 2002 to 2017

International Journal of Environmental Research and Public Health ◽

10.3390/ijerph17051520 ◽

2020 ◽

Vol 17 (5) ◽

pp. 1520

Author(s):

Xiaolin Cao ◽

Ge Bai ◽

Chunxiang Cao ◽

Yinan Zhou ◽

Xuechen Xiong ◽

...

Keyword(s):

Rural Areas ◽

Statistical Significance ◽

Regional Distribution ◽

Theil Index ◽

Test Results ◽

Gini Coefficients ◽

Medical Reform ◽

Before And After ◽

Urban And Rural Areas ◽

High Level

Background: Although China began implementing medical reforms in 2009 aimed at fair allocation of the regional distribution of doctors, little is known of their impact. This study analyzed the geographic distribution of doctors from 2002 to 2017. Methods: This study calculated the Gini coefficient and Theil index among doctors in the eastern, central, and western regions (Category 1) of China, and in urban and rural areas (Category 2). The statistical significance of fairness changes was analyzed using the Mann–Whitney U test. Results: The annual growth rates of the number of doctors for the periods from 2002 to 2009 and 2010 to 2017 were 2.38% and 4.44%. The Gini coefficients among Category 1 were lower than those in Category 2, and statistically decreased after the medical reforms (P < 0.01) but continued to increase in Category 2 (P = 0.463). In 2017, the Theil decomposition result of Category 1 was 74.33% for the between-group, and in Category 2, it was 95.22% for the within-group. Conclusions: The fairness among the regional distribution of doctors in Category 1 is now at a high level and is better than that before the reforms. While the fairness in Category 2 is worse than that before the reforms, it causes moderate inequality and is continually decreasing. Overall unfairness was found to be derived from the between-group.

Download Full-text

The effect of serological screening for SARS-CoV-2 antibodies to participants’ attitudes and risk behaviour: a study on a tested population sample of industry workers in Split-Dalmatia County, Croatia

10.1101/2020.06.15.20131482 ◽

2020 ◽

Author(s):

Toni Ljubić ◽

Ana Banovac ◽

Ivan Buljan ◽

Ivan Jerković ◽

Željana Bašić ◽

...

Keyword(s):

Serological Test ◽

Population Sample ◽

Risk Behaviour ◽

Working Environment ◽

Test Results ◽

Serological Tests ◽

Serological Screening ◽

Protective Measures ◽

Before And After ◽

High Level

ABSTRACTRapid serological tests for SARS-CoV-2 antibodies have been questioned by scientists and the public because of unexplored effects of negative test results on behaviour and attitudes, that could lower the level of adherence to protective measures. Therefore, our study aimed to investigate the changes in personal attitudes and behaviour before and after negative serological test results for SARS-CoV-2 antibodies. We conducted a survey questionnaire on 200 industry workers (69% males and 31% females) that have been previously tested negative. The survey examined participants’ self-reported general attitudes towards COVID-19, sense of fear, as well as their behaviour related to protective measures before and after the testing. The participants perceived the disease as a severe health threat and acknowledged the protective measures as appropriate. They reported a high level of adherence to measures and low level of fear both before and after the testing. Although those indicators were statistically significantly reduced after the test (P < 0.004), they did not result in risk behaviour. Therefore, the serological tests are not an additional threat regarding the risk behaviour in an environment where protective measures are efficient. In contrast, they might contribute to reducing the fear in the society and working environment.

Download Full-text

THE INFLUENCE OF INQUIRY AND DISCOVERY LEARNING METHOD AND CREATIVITY LEVEL IN WRITING SKILLS DESCRIPTION IN NAUTIC TARUNA AND TECHNIQUE IN SURABAYA SHIPPING POLYTECHNIC

SASTRANESIA Jurnal Program Studi Pendidikan Bahasa dan Sastra Indonesia ◽

10.32682/sastranesia.v8i1.1372 ◽

2020 ◽

Vol 8 (1) ◽

Author(s):

Ni Putu Dian Permata Prasetyaningrum

Keyword(s):

Quantitative Methods ◽

Writing Skills ◽

Discovery Learning ◽

Learning Method ◽

Test Results ◽

Learning Methods ◽

Is Research ◽

Investigation Methods ◽

High Level ◽

Discovery Method

Surabaya Shipping Polytechnic emphasizes on certain areas of expertise that Taruna must possess. This is the basis after graduating from shipping polytechnics, cadets must have expertise and skills. The purpose of this study was to study the effect of inquiry, discovery learning, and creativity levels on the ability to write descriptive essays on nautical and technical cadets at Surabaya Shipping Polytechnic. This type of research is research. This research uses quantitative methods using experiments. The location used in this research is Surabaya Shipping Polytechnic. The subjects in this study were the cadets of the Nautika A, Nautika B, Teknika A, and Teknika B. classes. Based on the results of the research and discussion, the following conclusions are obtained: There are those that can be solved looking for description essays in the cadets. learning discovery method. The test results show better investigation methods than the discovery of learning, There is a difference in the ability to write a description essay about cadets who have a high level of creativity with cadets who have a low level of creativity, the test results show better who have a high level of creativity, there are related with learning methods and descriptions of the ability to write essay descriptions, the test results show learning methods and creativity descriptions of the ability to write essay descriptions.

Download Full-text

Sunlight exposure: the effects on the performance of paragliding fabric

Industria Textila ◽

10.35530/it.069.05.1406 ◽

2018 ◽

Vol 69 (05) ◽

pp. 381-389

Author(s):

MENGÜÇ GAMZE SÜPÜREN ◽

TEMEL EMRAH ◽

BOZDOĞAN FARUK

Keyword(s):

Mechanical Properties ◽

Aging Process ◽

Air Permeability ◽

Sunlight Exposure ◽

Test Results ◽

Coating Materials ◽

Strength Tests ◽

Before And After ◽

The Relationship ◽

Dark Blue

This study was designed to explore the relationship between sunlight exposure and the mechanical properties of paragliding fabrics which have different colors, densities, yarn counts, and coating materials. This study exposed 5 different colors of paragliding fabrics (red, turquoise, dark blue, orange, and white) to intense sunlight for 150 hours during the summer from 9:00 a.m. to 3:00 p.m. for 5 days a week for 5 weeks. Before and after the UV radiation aging process, the air permeability, tensile strength, tear strength, and bursting strength tests were performed. Test results were also evaluated using statistical methods. According to the results, the fading of the turquoise fabric was found to be the highest among the studied fabrics. It was determined that there is a significant decrease in the mechanical properties of the fabrics after sunlight exposure. After aging, the fabrics become considerably weaker in the case of mechanical properties due to the degradation in both the dyestuff and macromolecular structure of the fiber

Download Full-text

Benefit of a pharmacist-led intervention for medication management of renal transplant patients: a controlled before-and-after study

Therapeutic Advances in Chronic Disease ◽

10.1177/20406223211005275 ◽

2021 ◽

Vol 12 ◽

pp. 204062232110052

Author(s):

Jeremy Chambord ◽

Lionel Couzi ◽

Pierre Merville ◽

Karine Moreau ◽

Fabien Xuereb ◽

...

Keyword(s):

Medication Adherence ◽

Immunosuppressive Therapy ◽

Medication Management ◽

Intervention Group ◽

Knowledge Score ◽

Control Group ◽

Patient Knowledge ◽

Transplant Patients ◽

Before And After ◽

High Level

Aims: To assess the effect of a pharmacist-led intervention, using Barrows cards method, during the first year after renal transplantation, on patient knowledge about their treatment, medication adherence and exposure to treatment in a French cohort. Methods: We conducted a before-and-after comparative study between two groups of patients: those who benefited from a complementary pharmacist-led intervention [intervention group (IG), n = 44] versus those who did not [control group (CG), n = 48]. The pharmacist-led intervention consisted of a behavioral and educational interview at the first visit (visit 1). The intervention was assessed 4 months later at the second visit (visit 2), using the following endpoints: treatment knowledge, medication adherence [proportion of days covered (PDC) by immunosuppressive therapy] and tacrolimus exposure. Results: At visit 2, IG patients achieved a significantly higher knowledge score than CG patients (83.3% versus 72.2%, p = 0.001). We did not find any differences in treatment exposure or medication adherence; however, the intervention tended to reduce the proportion of non-adherent patients with low knowledge scores. Using the PDC by immunosuppressive therapy, we identified 10 non-adherent patients (10.9%) at visit 1 and six at visit 2. Conclusions: Our intervention showed a positive effect on patient knowledge about their treatment. However, our results did not show any improvement in overall medication adherence, which was likely to be because of the initially high level of adherence in our study population. Nevertheless, the intervention appears to have improved adherence in non-adherent patients with low knowledge scores.

Download Full-text