scholarly journals The impact of the artery geometry with the sewn surgical patch on the blood flow disorders

2019 ◽  
Vol 128 ◽  
pp. 02005
Author(s):  
Natalia Lewandowska ◽  
Michal Cialkowski

The research concerns the development of geometric variants of patches sewn into the common carotid artery during surgery of the atherosclerotic plaques removal. Based on analytical methods, thegeometry of the patch described by the polynomial function has been developed. The simulations of blood flow in the arteries with the sewn patch were performed. The study included the influence of the patient’s diameter and the width of the chosen patch on blood flow disorders. The result of the research is the algorithm of selecting the geometry of the arterial patch to the individual geometrical featuresof the patient’s artery. The studies result will comprise the development of software, which, upon introduction of input data related to arterial geometry, patch length and patient’s blood parameters (affecting the fluid density and viscosity), shall generate an accurate contour of the patch of width causing no flow disorders.

Author(s):  
Gabriela Trnková ◽  
Z. Malá

The article deals with the analysis of inequality in the distribution of the economic result in businesses engaging in field production in the Czech Republic, by way of the assessment of the impact of subsidies on the said inequality and by defining the effect of the size of the business on the economic result as well as inequality. The methodical tool is the quantification of the Gini coefficient and its elasticity. The data basis consists of panel data of 140 agricultural businesses focusing on field production for the period of the years 2005–2010.The main results of the submitted article substantiate a high inequality in the distribution of the economic result for the accounting period among field production businesses. The said inequality is not generally caused by the differing size of the analyzed businesses, and the associated volume of subsidies obtained, but is affected by other factors, such as the management quality, the investment activity of the business, or exceptional events. Subsidies do contribute to the more equal distribution of the economic result, but their impact is very small. Out of the individual categories of subsidies, the ones with the main redistribution effect are direct payments, as a result of the high proportion of total subsidies that they comprise.


Author(s):  
M. Dergach

The article reveals the peculiarities of playback theater as a psychodramatic technique, analyzes the current practice of using playback theater in the system of socialization and re-socialization. The author found that socialization, as a necessary process for interaction with the outside world, is manifested in the assimilation and appropriation of social experience for the purpose of productive functioning in it and to construct an image of the common and own world (as a part of the common), which allows a person to live a life while preserving individuality. and creatively influence the world. Within this provision, playback theater should be regarded as a technology of the paratheater system of dramatherapy, which is relevant at any stage of the socialization of the individual or as a means in the mechanisms of socialization. Playback theater contributes to the development of tolerance for social differences, the acceptance of another with all its features, values. Thanks to him, we learn to listen to understand others, because in the performance the main thing is the story of the viewer, the realization of which is impossible in reality without careful perception. The author has found that playback theater as a paratheater system of drama is a rather interesting and important means of socialization and re-socialization of the personality, it can be used in any group of people to solve problems of a wide range. The article describes in detail the content of the playback theater application, namely: social integration of individual subgroups into society; social and psychological adaptation of personality; social-psychological and therapeutic support for people who are in emotional and psychological state; creation of a more favorable social and psychological climate for the team; social and psychological support in complex events; development of personal qualities of children in educational institutions; social and psychological support of people in recreational activities; playback theater as a means of creating space for social networking. Prospects for further research on the topic of the article are to study the attitude of the audience to the performances of the playback theater, the search for the means of expression of the actors, the impact of playback on the children's audience.


2010 ◽  
Vol 37 (4) ◽  
pp. 667-674
Author(s):  
Macoura Kone ◽  
Yanjun Chang ◽  
Gopal Achari ◽  
Cooper H. Langford

A promising photolysis based technology to dechlorinate polychlorinated biphenyls (PCBs), extracted from soils, in alkaline isopropanol (IPA) as reaction medium has been proposed. To be marketable the impact of co-contaminants extracted along with the PCBs, on the photodechlorination process needs investigation. In this paper the effectiveness of the photodeclorination process on PCBs extracted from samples of a representative soil containing co-contaminants is reported. The photodechlorination of PCBs extracted from weathered soils showed promising results of more than 76% dechlorination within the first hour of UV irradiation. Nearly complete dechlorination (96%) was achieved after 2 h of UV irradiation. To provide quantitative controlled appraisal of the effect of co-contaminants and explanation of the effects, dechlorination of neat Aroclor 1254 in the presence of the common co-contaminant, transformer oil, was evaluated. Further, the effect of transformer oil on some of the individual PCB congeners in the Aroclor mixture was also studied. The difference in the maximum percentage dechlorination of PCBs with and without transformer oil is 15%.


2005 ◽  
Vol 62 (4) ◽  
pp. 925-929 ◽  
Author(s):  
C V Minte-Vera ◽  
T A Branch ◽  
I J Stewart ◽  
M W Dorn

Meta-analysis is an important new tool for synthesizing scientific knowledge from many previous studies. In fisheries, meta-analyses can be used to obtain prior distributions or penalty functions for parameters used in stock assessment models. Two types of results are generally published in a meta-analysis: Type A, the updated results for each stock used in the meta-analysis, and Type B, the results that would best describe a new stock. Including these results in assessments for the individual stocks would result in double use of the data if the assessments include the input data used in the meta-analyses, which they typically would. To solve this problem, we recommend that an additional form of results should be reported in meta-analyses: Type C, the results for a new stock obtained by sequentially excluding each stock's data set and repeating the meta-analysis. Type C results should be used whenever the assessment input data overlap with the meta-analysis input data, avoiding the double use of data. We illustrate the impact of this reporting change on the results of a recent meta-analysis.


2012 ◽  
Vol 303 (2) ◽  
pp. G155-G168 ◽  
Author(s):  
Kim van Wijck ◽  
Kaatje Lenaerts ◽  
Joep Grootjans ◽  
Karolina A. P. Wijnands ◽  
Martijn Poeze ◽  
...  

Physical exercise places high demands on the adaptive capacity of the human body. Strenuous physical performance increases the blood supply to active muscles, cardiopulmonary system, and skin to meet the altered demands for oxygen and nutrients. The redistribution of blood flow, necessary for such an increased blood supply to the periphery, significantly reduces blood flow to the gut, leading to hypoperfusion and gastrointestinal (GI) compromise. A compromised GI system can have a negative impact on exercise performance and subsequent postexercise recovery due to abdominal distress and impairments in the uptake of fluid, electrolytes, and nutrients. In addition, strenuous physical exercise leads to loss of epithelial integrity, which may give rise to increased intestinal permeability with bacterial translocation and inflammation. Ultimately, these effects can deteriorate postexercise recovery and disrupt exercise training routine. This review provides an overview on the recent advances in our understanding of GI physiology and pathophysiology in relation to strenuous exercise. Various approaches to determine the impact of exercise on the individual athlete's GI tract are discussed. In addition, we elaborate on several promising components that could be exploited for preventive interventions.


1985 ◽  
Vol 249 (1) ◽  
pp. E63-E69 ◽  
Author(s):  
A. Elander ◽  
J. P. Idstrom ◽  
T. Schersten ◽  
A. C. Bylund-Fellenius

A rat model was developed in which the adaptive effects of exposing skeletal muscle tissue to a reduced blood flow during muscle contractions could be studied. The common iliac artery was ligated in one hindlimb, using the other as control. This procedure reduced the exercise blood flow to the individual muscles of the lower limb by 76-93%, evaluated with the microsphere technique. Muscle contractions were induced by electrical stimulation of the sciatic nerves in both legs. After intermittent stimulation for 6 days, a significant increase in citrate synthase and cytochrome c oxidase activities was found in the soleus (26%) and extensor digitorum longus (EDL, 20%) muscles of the ligated legs compared with the control legs. Resting metabolite concentrations were also measured, and a reduction of the ATP level (soleus 35%, EDL 14%) and an increased glycogen content (55-71%) were found. These results demonstrate that a reduced blood flow during muscle contractions provokes an adaptive increase of the oxidative enzyme capacity as well as altered resting levels of intracellular metabolites.


2018 ◽  
Vol 6 (2) ◽  
pp. 235-246
Author(s):  
Silvana Pasovska ◽  
Trajko Miceski

Transformational leadership has a major impact on the improvement of organizational culture and success. It affects change in cultural characteristics of the individual and improvement of human achievements in all areas, thus creating a long-term positive approach of a person. It results in positive transformation of a person and improvement of its potentials. The transformational approach has a capacity to make significant change both in individuals and in the organization through adaptation, expectations, aspirations, perceptions and values. Such an approach is based mostly on leader’s personality, his character, vision, the power to accept the challenge and on his own example.Transformational leaders are focused on the "common good" instead of their individual "power bases”, they are broad-minded and respect the interests of their followers. With such leaders people are willing to create and innovate and to work harder than expected,.The paper studies some views on transformational leadership based on charisma, innovation of the companies, producing success and building personalities with durable and unperishable values. This is empirical research on the image of organizations formulated through the statements of managers and employees and presented through tabular, graphical and calculated correlative values.


2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Jian Gao ◽  
Peng Zhao ◽  
Chengxiang Zhuge ◽  
Hui Zhang ◽  
Edward D. McCormack

This study reviews the impact of public transit network layout (TNL) on resident mode choice. The review of TNL as a factor uses variables divided into three groups: a variable set without considering the TNL, one considering TNL from the zone level, and one considering TNL from the individual level. Using Baoding’s travel survey data, a Multinomial Logit (MNL) model is used, and the parameter estimation result shows that TNL has significant effect on resident mode choice. Based on parameter estimation, the factors affecting mode choice are further screened. The screened variable set is regarded as the input data to the BP neural network’s training and forecasting. Both forecasting results indicate that introducing TNL can improve the performance of mode choice forecasting.


Author(s):  
Anthony A. Paparo ◽  
Judith A. Murphy

The purpose of this study was to localize the red neuronal pigment in Mytilus edulis and examine its role in the control of lateral ciliary activity in the gill. The visceral ganglia (Vg) in the central nervous system show an over al red pigmentation. Most red pigments examined in squash preps and cryostat sec tions were localized in the neuronal cell bodies and proximal axon regions. Unstained cryostat sections showed highly localized patches of this pigment scattered throughout the cells in the form of dense granular masses about 5-7 um in diameter, with the individual granules ranging from 0.6-1.3 um in diame ter. Tissue stained with Gomori's method for Fe showed bright blue granular masses of about the same size and structure as previously seen in unstained cryostat sections.Thick section microanalysis (Fig.l) confirmed both the localization and presence of Fe in the nerve cell. These nerve cells of the Vg share with other pigmented photosensitive cells the common cytostructural feature of localization of absorbing molecules in intracellular organelles where they are tightly ordered in fine substructures.


Author(s):  
Brynne D. Ovalle ◽  
Rahul Chakraborty

This article has two purposes: (a) to examine the relationship between intercultural power relations and the widespread practice of accent discrimination and (b) to underscore the ramifications of accent discrimination both for the individual and for global society as a whole. First, authors review social theory regarding language and group identity construction, and then go on to integrate more current studies linking accent bias to sociocultural variables. Authors discuss three examples of intercultural accent discrimination in order to illustrate how this link manifests itself in the broader context of international relations (i.e., how accent discrimination is generated in situations of unequal power) and, using a review of current research, assess the consequences of accent discrimination for the individual. Finally, the article highlights the impact that linguistic discrimination is having on linguistic diversity globally, partially using data from the United Nations Educational, Scientific and Cultural Organization (UNESCO) and partially by offering a potential context for interpreting the emergence of practices that seek to reduce or modify speaker accents.


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