24 research outputs found

    Neuroengineering: perspectives of neuroprostheses and neuroimplants

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    A study was made of the development of prosthetics from the earliest models to the latest. It is considered in the article how the work of the latest models of neuroprostheses is carried out. Proposed possible innovations in the field of neuroengineering in the near future. Considered non-standard possibilities of using neuroprostheses

    Citizen Entrepreneurship: A Conceptual Picture of the Inclusion, Integration and Engagement of Citizens in the Entrepreneurial Process

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    This conceptual and exploratory article aims to present a rationale for the engagement of citizens with the process and practice of, and research on new civic forms of entrepreneurship. We argue that this form of citizen engagement could enable a better alignment of entrepreneurial initiatives with economic, social and community priorities, and to address issues of global significance of local interest in uncertain environments. To this end, we posit that engaging citizens in the entrepreneurial process could facilitate agency at the collective level of people with their rights, duties and responsibilities, to identify, participate in and govern with existing institutions, in meaningful economic and social activity in defined spatial environments. Our normative understanding of entrepreneurial process involves the creation of business, social and public enterprises, the formation of which is led by entrepreneurs. Entrepreneurs are of course citizens of specific nation states, but their endeavours do not necessarily warrant the participation of the wider community of citizens in the entrepreneurial process beyond their receiving function as users of goods and services. We consider whether pro-active engagement in a variety of ways, as nurtured in the practice of Citizen Science or Citizen Economics projects, could strengthen the profile and substance of entrepreneurship to resolve critical economic, social and environmental concerns of our times. We use the concept of the ‘commons’ and collective efficacy to argue for an understanding of entrepreneurship and innovation as a social good. We argue that Citizen Entrepreneurship (CE) is able to create new forms of collective organisation and governance, and derive economic and social value by addressing local issues arising from wide-spread phenomena such as climate change, ecological and environmental challenges, inequality, social polarisation, populism, migration and the gradual erosion of democratic institutions. To do so, citizens need to develop capabilities for engagement in the entrepreneurship process, especially when traditional public and market institutions fail to satisfy their existential needs. Indeed, active engagement could lead to the achievement of capabilities for well-being and fulfilling lives which go beyond the acquisition of skills and competencies necessary to pursue a vocation or a career. We refer to and interpret three examples of collective entrepreneurial activity in different urban environments in European countries as models of CE highlighting what we see as a growing trend in the entrepreneurial substance of the ‘urban commons’. We work towards the creation of a conceptual model with which to develop an understanding of a unique formulation of entrepreneurship

    Effect of promoter architecture on the cell-to-cell variability in gene expression

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    According to recent experimental evidence, the architecture of a promoter, defined as the number, strength and regulatory role of the operators that control the promoter, plays a major role in determining the level of cell-to-cell variability in gene expression. These quantitative experiments call for a corresponding modeling effort that addresses the question of how changes in promoter architecture affect noise in gene expression in a systematic rather than case-by-case fashion. In this article, we make such a systematic investigation, based on a simple microscopic model of gene regulation that incorporates stochastic effects. In particular, we show how operator strength and operator multiplicity affect this variability. We examine different modes of transcription factor binding to complex promoters (cooperative, independent, simultaneous) and how each of these affects the level of variability in transcription product from cell-to-cell. We propose that direct comparison between in vivo single-cell experiments and theoretical predictions for the moments of the probability distribution of mRNA number per cell can discriminate between different kinetic models of gene regulation.Comment: 35 pages, 6 figures, Submitte

    pH responsiveness of block copolymer vesicles with a polypeptide corona

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    Asymptomatic Post-Traumatic Rupture of the Right Diaphragm Dome

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    Aim.  This paper is aimed at presenting the materials of clinical observations associated with diagnosing rare-occurring ruptures of the right dome of the diaphragm that have been overlooked for a long period.Results.  A 61-year-old man was admitted to hospital with a diagnosis of chronic heart failure. Chest radiograph revealed a high position of the right dome of the diaphragm. Computed tomography revealed a defect in the central parts of the diaphragm on the right, the liver was rotated outward with its visceral surface deployed anteriorly and upward. In the right thoracic cavity, anterior to the liver, were the loops of the intestine and the outlet of the stomach.More than 30 years before, the patient had experienced an explosive trauma, which might have caused a rupture in the right dome of the diaphragm. A 70-year-old man, a smoker with a ten-year history of hypertension, was hospitalized with an increase in dyspnea, a cough with the discharge of purulent sputum, the feeling of heaviness behind the sternum. Chest radiograph revealed a high standing of the right dome of the diaphragm at the level of 3rd rib with a decrease in the volume of the right lung, and an increase in cardiac silhouette (cardiothoracic index 0.64). Computed tomography revealed a high standing of the right dome of the diaphragm as well as the compression of the middle and lower lobe of the right lung with the presence of compression atelectasis. The liver was rotated, displaced into the right thoracic cavity, the deformation of the inferior vena cava to the right was visualized due to the displacement and rotation of the liver. The consolidated fractures of 10th–12th ribs on the right were visualized. The patient had had a chest injury resulting from a traffic accident about 15 years before, with no X-ray examination having been conducted at that time.Conclusion.  In the case of left-sided diaphragm ruptures, which are much more frequent than the right-sided ones, the stomach, large and small intestines as well as spleen are displaced into the thoracic cavity. In the case of rightsided diaphragm ruptures, the liver and gallbladder are displaced into the thoracic cavity. Right-sided posttraumatic diaphragmatic hernias that are not diagnosed at the time of injury or trauma and continue to be asymptomatic for a number of years are very rare. The sensitivity and specificity of computed tomography for the diagnosis of diaphragm ruptures is 61–87 % and 72–100 %, respectively. In an acute period, the treatment of diaphragm ruptures is surgical. However, in long-term asymptomatic ruptures, expectant management is possible, particularly if the risk of surgical treatment is high

    Clinical case of combined genetic pathology in a patient

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    Family hypercholesterolemia (HSX) is a form of genetically deterministic increase in blood lipid levels associated with a high risk of cardiovascular disease, usually at a young age. HSX is a common genetic disease found in the general population in most countries in 1:500 people. Clinically xantomas are found in achilles tendor and wrist flexors, lipoid arc of the cornea, concentration of total cholesterol and low-density lipoproteins is 4.911.6 mmol/l. Gilberts syndrome is a hereditary benign hyperbilirubinium, associated with a decrease in the functional activity of the liver enzyme uridinfosfat-glucuronosil transferase. Clinically, this syndrome appers in intermittent jaundice, which is provoked by physical activity, consumption of alcoholic beverages, insulation and an increase in the level of indirect bilirubin within 20100 micromol/ml. The article presents a rare clinical case of genetic combination of HSC SSC and Gilbert syndrome a young patient has and discusses the elevated bilirubin levels protective role in the atherosclerosis progression in Gilbert syndrome
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