scholarly journals Investigations of argon and neon abnormal glow discharges in the presence of metastable atom density with fluid model

2016 ◽  
Vol 94 (8) ◽  
pp. 731-739 ◽  
Author(s):  
Tahar Alili ◽  
Abdelaziz Bouchikhi ◽  
Mohamed Rizouga
Keyword(s):  
Input Data ◽  
Fluid Model ◽  
Metastable Atom ◽  
Atom Density ◽  
Glow Discharges ◽  
A Value ◽  
Cathodic Region ◽  
The Mean ◽  
Spatio Temporal

In this manuscript an investigation of a DC argon and neon abnormal glow discharges with metastable atom density is presented. The values of pressure lie between 133.32 and 330 Pa, and the voltage ranges from 250 to 400 V in the case of argon gas. In the case of neon gas, the pressure has a value of 399.92 Pa (3 Torr) and the voltage ranges from 300 to 500 V. In this framework, an analysis of abnormal glow discharge characteristics is carried out in the case of input data taken from the Boltzmann equation in the multi-term approximation, and in the case of input data obtained from BOLISG+ code. With these differences of input data in the same gas, the output results are different; it appears in the cathodic region. The spatio-temporal distributions of electron and ion densities, the potential and electric field, the mean electron energy and the metastable atom density are shown. A 1D fluid model is used to solve self-consistently the first three moments of the Boltzmann’s equation coupled with the Poisson’s equation. The role of the presence of metastable atom density in the fluid model is clearly because of the domination of ionization processes by both stepwise and penning ionizations. Our results are validated with those obtained by both recent paper and experimental results.

Physical proprieties of DC glow discharges in a neon–argon gas mixture

2018 ◽  
Vol 96 (1) ◽  
pp. 62-70 ◽  
Author(s):  
Abdelaziz Bouchikhi
Keyword(s):  
Fluid Model ◽  
Field Approximation ◽  
Metastable Atom ◽  
Rate Coefficients ◽  
Gas Mixture ◽  
Ion Density ◽  
Atom Density ◽  
Neon Gas ◽  
Spatio Temporal ◽  
Ar Gas

This paper reports a detailed study of 90% Ne – 10% Ar gas mixture DC glow discharge at low pressure, wherein 15 chemical reactions are considered. The second-order fluid model is used. The parameters of particle transport and their rate coefficients strictly depend on mean electron energy. In the framework of the local electric field approximation, we have developed an analytical expression of the drift velocity of positive argon ions in a neon gas [Formula: see text], which is in good agreement with the experimental results, and serves to give best results than the results obtained using [Formula: see text] that exist in the literature. The results show that the argon ion density is more important than the neon ion density despite the presence of more constant background neon gas density in the mixture. The current density reaches 0.1729 mA/cm2 for 250 V applied potential under 2 Torr pressure in a gas mixture. The spatio-temporal evolution of both electric and energetic characteristics, as well as their spatial distribution in the steady state, are shown and discussed. The maximum value of the neon metastable atom density is 4.54957 × 108 cm−3, and for argon metastable atom density is 5.4689 × 108 cm−3. The model is verified experimentally and theoretically in the particular case.

Metastable atom density in helium, neon, and argon glow discharges

1982 ◽  
Vol 53 (12) ◽  
pp. 8532-8536 ◽  
Author(s):  
K. A. Hardy ◽  
J. W. Sheldon
Keyword(s):  
Metastable Atom ◽  
Atom Density ◽  
Glow Discharges ◽  
Helium Neon

Asset and Business Valuation in Estate Tax Cases: The Role of the Courts

2013 ◽  
Vol 35 (2) ◽  
pp. 121-134 ◽  
Author(s):  
Mark Jackson ◽  
Sonja Pippin ◽  
Jeffrey A. Wong
Keyword(s):  
Mean Value ◽  
Court System ◽  
Asset Valuation ◽  
Estate Tax ◽  
Business Valuation ◽  
A Value ◽  
Asset Value ◽  
Prior Literature ◽  
The Mean

ABSTRACT The U.S. court system plays an important role in resolving asset valuation disagreements between taxpayers and the taxing authority. Prior literature suggests that in estate tax cases, courts act as compromisers choosing a value somewhere between the estimates arrived at by the taxpayer and the Internal Revenue Service (IRS). Some studies argue that the tax courts choose the arithmetic mean between the two estimates. Using models from prior literature and an updated dataset, we reexamine the role of the courts in appraising disputed asset value estimates and find that the courts do not simply use the mean value between taxpayer and IRS asset valuation estimates. In addition to testing the concept of courts acting as compromisers, we investigate whether there are certain factors related to the case and the judge that may be correlated with the judge's decision. We find evidence that suggests that the number of appraisers used by the taxpayer, the political affiliation of the judge, the type of asset being valued, and the age and complexity of the case are related to the decisions of the court. Our study should be of interest to taxpayers, the IRS, the courts, and tax researchers.

scholarly journals PENINGKATAN KESEHATAN LANSIA MELALUI POSYANDU LANSIA DENGAN PENGAKTIFAN KEGIATAN SENAM LANSIA DI DESA PAGERNGUMBUK KECAMATAN WONOAYU KABUPATEN SIDOARJO

2020 ◽  
Vol 5 (2) ◽  
pp. 319
Author(s):  
Zulfa Rufaida ◽  
Sri Wardini Puji Lestari ◽  
Abdul Muhith
Keyword(s):  
Community Service ◽  
Health Workers ◽  
The Elderly ◽  
A Value ◽  
Post Test ◽  
Health Care Policies ◽  
The Mean ◽  
The Government

The number of elderly people is increasing, therefore the government has formulated various health care policies aimed at improving the health status and quality of life of the elderly to achieve a happy and efficient old age in family and community life according to their existence. The purpose of this community service is to increase knowledge about the Elderly Posyandu and to be active in participating in elderly gymnastics. The methods used are lectures, discussions, role play and mentoring. The targets are the elderly in Pagerngumbuk Village, Wonoayu District, Sidoarjo Regency, the implementation of activities from April to June 2018. Data analysis uses frequency distribution. The results obtained, there were 34 participants with the mean pre-test and post-test scores of 87.94. The result is a significant increase in knowledge of 0.000 with a value of t = -16.85, and a 95% CI between -46.81 - -36.72, meaning that the effect is strong because it does not pass 1; giving treatment can increase 3-4x knowledge compared to not given. Meanwhile, for elderly exercise assistance, the number of participants averaged 27 people. The Posyandu Elderly counseling participants were enthusiastic about the material presented. There is an increase in the knowledge of the elderly about the role of the elderly Posyandu and the importance of elderly exercise. Health workers always provide information about the activities of the Elderly Posyandu to cadres, village officials and the community on an ongoing basis.  

scholarly journals Predictive role of FAR ratio in Covid-19 patients

2021 ◽  
Author(s):  
Deniz Çekiç ◽  
Mehmet Emir Arman ◽  
Ahmed Cihad Genç ◽  
Kubilay İşsever ◽  
ilhan yıldırım ◽  
...  
Keyword(s):  
Inflammatory Marker ◽  
Demographic Data ◽  
Severe Disease ◽  
Albumin Ratio ◽  
Coronary Syndrome ◽  
A Value ◽  
Laboratory Markers ◽  
Predictive Role ◽  
The Mean

Objective: No effective treatment has yet been found for SARS-cov-2, which caused a pandemic outbreak in 2019. It is crucial to detect the progression of Covid-19 in patients as early as possible. Fibrinogen to albumin ratio (FAR) has been used as a new inflammatory marker. We aimed to find out whether the use of the FAR ratio as a predictor of mortality in Covid-19 patients provides clinical benefit. Materials and Methods: Data from 590 patients with Covid-19 from 15/03/2020 to 15/01/2021 in medicine wards and intensive care units (ICU) were retrospectively analyzed. Demographic data and other laboratory markers were collected from the electronic medical records. Relationship between FAR ratio was investigated between patients in the survivor/non-survivor patients. Findings: The mean FAR levels in patients who were non survivor was 24.44±30.3 (n:272 and 11.29±6.29 (n:275) (p:0.000) in patients survivor COVID-19 infection. In ROC curve for FAR, the threshold FAR that may pose a risk for mortality was determined as 13.84 ((AUC: 0.808(0.771-0.844)); 74.9% Sensitivity, 74.6% Specificity; p:0.000 )). Result: As a result of this study, increased FAR were found to be important markers in determining the mortality levels in Covid-19 patients. What is already known about FAR ratio: The fibrinogen albumin ratio is a value that has been used to determine the prognosis, especially in malignancies. [32] In a recent study 91 Covid-19 patients were analyzed 22 patients with severe disease higher FAR ratio compare to mild disaese [36] What does this article add about FAR ratio in Covid-19 patients: It has been concluded that the FAR ratio, which is used in diseases such as malignancy, hypertension, and coronary syndrome as a marker of disease progression, can be used as a mortality indicator in Covid-19

Endangered Butterflies and their Non-Native Host Plants: Examining Shifting Values of Belonging in Restoration

2019 ◽  
Vol 3 (1) ◽  
pp. 1-9
Author(s):  
Robert M. Anderson ◽  
Amy M. Lambert
Keyword(s):  
Ecological Restoration ◽  
Native Species ◽  
Puget Sound ◽  
A Value ◽  
The Social ◽  
Remote Island ◽  
Scientific Truth ◽  
Native Host

The island marble butterfly (Euchloe ausonides insulanus), thought to be extinct throughout the 20th century until re-discovered on a single remote island in Puget Sound in 1998, has become the focus of a concerted protection effort to prevent its extinction. However, efforts to “restore” island marble habitat conflict with efforts to “restore” the prairie ecosystem where it lives, because of the butterfly’s use of a non-native “weedy” host plant. Through a case study of the island marble project, we examine the practice of ecological restoration as the enactment of particular norms that define which species are understood to belong in the place being restored. We contextualize this case study within ongoing debates over the value of “native” species, indicative of deep-seated uncertainties and anxieties about the role of human intervention to alter or manage landscapes and ecosystems, in the time commonly described as the “Anthropocene.” We interpret the question of “what plants and animals belong in a particular place?” as not a question of scientific truth, but a value-laden construct of environmental management in practice, and we argue for deeper reflexivity on the part of environmental scientists and managers about the social values that inform ecological restoration.

THE EFFECT OF ALTERATION OF THYROXINE BINDING CAPACITY ON THE DIALYZABLE AND ABSOLUTE FRACTIONS OF TRIIODOTHYRONINE IN CIRCULATION

1973 ◽  
Vol 72 (2) ◽  
pp. 265-271 ◽  
Author(s):  
J. H. Dussault ◽  
D. A. Fisher ◽  
J. T. Nicoloff ◽  
V. V. Row ◽  
R. Volpe
Keyword(s):  
Correlation Coefficient ◽  
Inverse Relationship ◽  
Binding Capacity ◽  
Hormone Concentration ◽  
Thyroxine Binding Globulin ◽  
Serum Thyroxine ◽  
A Value ◽  
The Mean ◽  
Male Subjects ◽  
Female Subjects

ABSTRACT In order to determine the effect of alterations in binding capacity of thyroxine binding globulin (TBG) on triiodothyronine (T3) metabolism, studies were conducted in 10 patients with idiopathically low (7 subjects) or elevated (3 subjects) TBG levels and 10 subjects given norethandrolone (7 male subjects) or oestrogen (3 female subjects). Measurements of serum thyroxine (T4) concentration, maximal T4 binding capacity, serum T3 concentration and per cent dialyzable T3 were conducted. Serum T3 was measured both by chemical and radioimmunoassay methods. In patients with idiopathically low TBG, the mean serum T4 concentration was low (2.4 μg/100 ml), the mean serum T3 level low (55 ng/100 ml), the mean per cent dialyzable T3 increased (0.52%), and the calculated free T3 concentration normal (186 pg/100 ml). In patients with idiopathically high TBG levels the mean T4 concentration was high (10.3 μg/100 ml), the mean T3 level slightly elevated (127 ng/100 ml), the% dialyzable T3 low (0.10%) and the calculated free T3 concentration low normal (123 pg/100 ml). The correlation coefficient between the per cent dialyzable T3 and maximal TBG binding capacity in the 20 subjects was 0.68, a value significant at the P < 0.01 level. Thus, alterations in binding capacity of TBG seem to influence T3 and T4 metabolism similarly; the inverse relationship between the % of dialyzable hormone and total hormone concentration tends to keep the absolue levels of free hormones stable.

Perempuan dan Liminalitas dalam Tradisi Perkawinan Adat di Timor Tengah Selatan

2020 ◽  
Vol 6 (1) ◽  
pp. 114
Author(s):  
Marsel Eliaser Liunokas
Keyword(s):  
Qualitative Research ◽  
Research Method ◽  
Literature Study ◽  
Qualitative Research Method ◽  
South Central ◽  
A Value ◽  
Traditional Marriage ◽  
The Village ◽  
As If

Timorese culture is patriarchal in that men are more dominant than women. As if women were not considered in traditional rituals so that an understanding was built that valued women lower than men. However, in contrast to the article to be studied, this would like to see the priority of women’s roles in traditional marriages in Belle village, South Central Timor. The role of women wiil be seen from giving awards to their parents called puah mnasi manu mnasi. This paper aims to look at the meaning of the rituals of puah mnasi maun mnasi and the role and strengths that women have in traditional marriage rituals in the village of Belle, South Central Timor. The method used for this research is a qualitative research method using interview techniques with a number of people in the Belle Villa community and literature study to strengthen this writing. Based on the data obtained this paper shows that the adat rituals of puah mnasi manu mnasi provide a value that can be learned, namely respect for women, togetherness between the two families, and brotherhood that is intertwined due to customary marital affrairs.

Influence of social networks on business processes’ development

2020 ◽  
Vol 19 (12) ◽  
pp. 2225-2252
Author(s):  
E.V. Popov ◽  
V.L. Simonova ◽  
O.V. Komarova ◽  
S.S. Kaigorodova
Keyword(s):  
Social Networks ◽  
Social Media ◽  
Business Models ◽  
Business Processes ◽  
Digital Economy ◽  
Theoretical Understanding ◽  
Sales Channels ◽  
A Value ◽  
The Impact

Subject. The emergence of new ways of interaction between sellers and buyers, the formation of new sales channels and product promotion based on the use of digital economy tools is at the heart of improving the business processes. Social networks became a tool for development; their rapid growth necessitates theoretical understanding and identification of potential application in enterprise's business process digitalization. Objectives. We explore the role of social media in the digitalization of business processes, systematize the impact of social networks on business processes of enterprises in the digital economy. Methods. The theoretical and methodological analysis of social networks as a tool for digitalization of company's business processes rests on the content analysis of domestic and foreign scientific studies, comparison, generalization and systematization. Results. We highlight the key effects of the impact of social networks on the business processes of the company; show that the digitalization of business processes should be considered in the context of a value-based approach, aimed at creating a value through the algorithmization of company operations. We determine that social networks are one of the most important tools for digitalization of company's business processes, as they have a high organizational and management potential. We also systematize the effects of social media on company's business processes. Conclusions. We present theoretical provisions of the impact of social networks on business processes of enterprises, which will enable to model and organize ideas about the development of digital ecosystems and the formation of business models.

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