253 research outputs found

    On the Necessity and Possibility of Introducing Self-Driving Systems in an Urban Environment

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    This article analyses the possibility of using self-driving systems in the field of public transport. In this study, the type of public transport considered is the tram. Today, self-driving innovative technologies are becoming publicly available. It is shown that in the field of modernization of the artificial intelligence of the tram, maximum practical experience is needed to improve its adaptation to various external situations. The study suggests the practical application of self-driving systems in a city with a population of 1.5 million people. This city is Yekaterinburg, Russia. The best world experience in the field of automation of public transport processes is considered. The article also provides an algorithm for the introduction of self-driving systems into the urban environment. The advantages and disadvantages of the existing and modernized tram fleet are shown on the example of the city of Yekaterinburg. SWOT analysis was used as a tool for assessing the need and possibility of introducing a tram. © 2022 Institute of Physics Publishing. All rights reserved.Solovev D.B.Petukhov V.Bekker A

    The Development of a Comfortable Urban Environment on the Example of Ekaterinburg City

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    The creating of comfortable, safe living environment is the desire of all citizens and the population of the city. The successful way to create a new image of the cities (territories with huge potential) is to use a systematic approach. A comfortable urban environment will allow citizens to spend more time in the street, recharging with positive and wonderful mood. To get effective interactions, it would be good to concentrate the efforts of the city administration, expert communities, local activists and active citizens together to solve urban problems. Public spaces are one of the directions to develop a comfortable city environment. With them it will be possible to reprogram and integrate the historical solutions into the modern ones. The old place will get a new life. In this way small changes will lead to a tremendous transformation. To identify areas that require improvement we must do urban environment analysis. As an applied aspect, the rationale for the improvement of the Stone Tents park zone in the Ekaterinburg city is given. The experience gained in the project framework can be used to create a comfortable urban environment in other settlements. © 2020 IOP Publishing Ltd. All rights reserved.Consider property issues and issues of ownership of the territory, study the existing legislative acts relating to the theme of the project; Develop and describe the concept of the park improvement project, build visual models in the landscape design program; Determine the costs of the development and implementation of the improvement project, as well as consider the environmental effectiveness of the project; Identify the possibility of attracting investors for financial support of the project; Describe the expected results of the Stone Tents park landscaping project

    Increased circulating ANG II and TNF-α represents important risk factors in obese Saudi adults with hypertension irrespective of diabetic status and BMI

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    Central adiposity is a significant determinant of obesity-related hypertension risk, which may arise due to the pathogenic inflammatory nature of the abdominal fat depot. However, the influence of pro-inflammatory adipokines on blood pressure in the obese hypertensive phenotype has not been well established in Saudi subjects. As such, our study investigated whether inflammatory factors may represent useful biomarkers to delineate hypertension risk in a Saudi cohort with and without hypertension and/or diabetes mellitus type 2 (DMT2). Subjects were subdivided into four groups: healthy lean controls (age: 47.9±5.1 yr; BMI: 22.9±2.1 Kg/m2), non-hypertensive obese (age: 46.1±5.0 yr; BMI: 33.7±4.2 Kg/m2), hypertensive obese (age: 48.6±6.1 yr; BMI: 36.5±7.7 Kg/m2) and hypertensive obese with DMT2 (age: 50.8±6.0 yr; BMI: 35.3±6.7 Kg/m2). Anthropometric data were collected from all subjects and fasting blood samples were utilized for biochemical analysis. Serum angiotensin II (ANG II) levels were elevated in hypertensive obese (p<0.05) and hypertensive obese with DMT2 (p<0.001) compared with normotensive controls. Systolic blood pressure was positively associated with BMI (p<0.001), glucose (p<0.001), insulin (p<0.05), HOMA-IR (p<0.001), leptin (p<0.01), TNF-α (p<0.001) and ANG II (p<0.05). Associations between ANG II and TNF-α with systolic blood pressure remained significant after controlling for BMI. Additionally CRP (p<0.05), leptin (p<0.001) and leptin/adiponectin ratio (p<0.001) were also significantly associated with the hypertension phenotype. In conclusion our data suggests that circulating pro-inflammatory adipokines, particularly ANG II and, TNF-α, represent important factors associated with a hypertension phenotype and may directly contribute to predicting and exacerbating hypertension risk

    WASTE FROM SLAG PRODUCTION — INTO FOAM GLASS

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    The paper considers the possibility of using waste slag production and glass container industry as a raw material for the manufacture of plate heat-insulating and noise-absorbing materials and foam glass for construction. The mode of foaming of glass granulate with additions of finely ground fiber — “korolyek”, wastes in the production of slag wool was worked out. The charge can include up to 15 wt. % of waste is slag.В работе рассматривается возможность использования отходов шлаковатного производства и стеклотарной промышленности в качестве исходного сырья для изготовления плитных теплоизоляционных и шумопоглощающих материалов и пеностеклощебня для строительства. Отработан режим вспенивания стеклогранулята с добавками тонкоизмельченного волокна — «королька», брака в производстве шлаковаты. В состав шихты может входить до 15 мас. % отходов шлаковаты

    Extreme genomic erosion after recurrent demographic bottlenecks in the highly endangered Iberian lynx

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    Background: Genomic studies of endangered species provide insights into their evolution and demographic history, reveal patterns of genomic erosion that might limit their viability, and offer tools for their effective conservation. The Iberian lynx (Lynx pardinus) is the most endangered felid and a unique example of a species on the brink of extinction. Results: We generate the first annotated draft of the Iberian lynx genome and carry out genome-based analyses of lynx demography, evolution, and population genetics. We identify a series of severe population bottlenecks in the history of the Iberian lynx that predate its known demographic decline during the 20th century and have greatly impacted its genome evolution. We observe drastically reduced rates of weak-to-strong substitutions associated with GC-biased gene conversion and increased rates of fixation of transposable elements. We also find multiple signatures of genetic erosion in the two remnant Iberian lynx populations, including a high frequency of potentially deleterious variants and substitutions, as well as the lowest genome-wide genetic diversity reported so far in any species. Conclusions: The genomic features observed in the Iberian lynx genome may hamper short- and long-term viability through reduced fitness and adaptive potential. The knowledge and resources developed in this study will boost the research on felid evolution and conservation genomics and will benefit the ongoing conservation and management of this emblematic species

    Differential IL-1β secretion by monocyte subsets is regulated by Hsp27 through modulating mRNA stability.

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    Monocytes play a central role in regulating inflammation in response to infection or injury, and during auto-inflammatory diseases. Human blood contains classical, intermediate and non-classical monocyte subsets that each express characteristic patterns of cell surface CD16 and CD14; each subset also has specific functional properties, but the mechanisms underlying many of their distinctive features are undefined. Of particular interest is how monocyte subsets regulate secretion of the apical pro-inflammatory cytokine IL-1β, which is central to the initiation of immune responses but is also implicated in the pathology of various auto-immune/auto-inflammatory conditions. Here we show that primary human non-classical monocytes, exposed to LPS or LPS + BzATP (3'-O-(4-benzoyl)benzyl-ATP, a P2X7R agonist), produce approx. 80% less IL-1β than intermediate or classical monocytes. Despite their low CD14 expression, LPS-sensing, caspase-1 activation and P2X7R activity were comparable in non-classical monocytes to other subsets: their diminished ability to produce IL-1β instead arose from 50% increased IL-1β mRNA decay rates, mediated by Hsp27. These findings identify the Hsp27 pathway as a novel therapeutic target for the management of conditions featuring dysregulated IL-1β production, and represent an advancement in understanding of both physiological inflammatory responses and the pathogenesis of inflammatory diseases involving monocyte-derived IL-1β

    Management of MDR-TB in HIV co-infected patients in Eastern Europe: Results from the TB:HIV study

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    Objectives Mortality among HIV patients with tuberculosis (TB) remains high in Eastern Europe (EE), but details of TB and HIV management remain scarce. Methods In this prospective study, we describe the TB treatment regimens of patients with multi-drug resistant (MDR) TB and use of antiretroviral therapy (ART). Results A total of 105 HIV-positive patients had MDR-TB (including 33 with extensive drug resistance) and 130 pan-susceptible TB. Adequate initial TB treatment was provided for 8% of patients with MDR-TB compared with 80% of those with pan-susceptible TB. By twelve months, an estimated 57.3% (95%CI 41.5\u201374.1) of MDR-TB patients had started adequate treatment. While 67% received ART, HIV-RNA suppression was demonstrated in only 23%. Conclusions Our results show that internationally recommended MDR-TB treatment regimens were infrequently used and that ART use and viral suppression was well below the target of 90%, reflecting the challenging patient population and the environment in which health care is provided. Urgent improvement of management of patients with TB/HIV in EE, in particular for those with MDR-TB, is needed and includes widespread access to rapid TB diagnostics, better access to and use of second-line TB drugs, timely ART initiation with viral load monitoring, and integration of TB/HIV care

    Clinical and organizational factors associated with mortality during the peak of first COVID-19 wave: the global UNITE-COVID study

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    Purpose: To accommodate the unprecedented number of critically ill patients with pneumonia caused by coronavirus disease 2019 (COVID-19) expansion of the capacity of intensive care unit (ICU) to clinical areas not previously used for critical care was necessary. We describe the global burden of COVID-19 admissions and the clinical and organizational characteristics associated with outcomes in critically ill COVID-19 patients. Methods: Multicenter, international, point prevalence study, including adult patients with SARS-CoV-2 infection confirmed by polymerase chain reaction (PCR) and a diagnosis of COVID-19 admitted to ICU between February 15th and May 15th, 2020. Results: 4994 patients from 280 ICUs in 46 countries were included. Included ICUs increased their total capacity from 4931 to 7630 beds, deploying personnel from other areas. Overall, 1986 (39.8%) patients were admitted to surge capacity beds. Invasive ventilation at admission was present in 2325 (46.5%) patients and was required during ICU stay in 85.8% of patients. 60-day mortality was 33.9% (IQR across units: 20%–50%) and ICU mortality 32.7%. Older age, invasive mechanical ventilation, and acute kidney injury (AKI) were associated with increased mortality. These associations were also confirmed specifically in mechanically ventilated patients. Admission to surge capacity beds was not associated with mortality, even after controlling for other factors. Conclusions: ICUs responded to the increase in COVID-19 patients by increasing bed availability and staff, admitting up to 40% of patients in surge capacity beds. Although mortality in this population was high, admission to a surge capacity bed was not associated with increased mortality. Older age, invasive mechanical ventilation, and AKI were identified as the strongest predictors of mortality

    Post-transcriptional control during chronic inflammation and cancer: a focus on AU-rich elements

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    A considerable number of genes that code for AU-rich mRNAs including cytokines, growth factors, transcriptional factors, and certain receptors are involved in both chronic inflammation and cancer. Overexpression of these genes is affected by aberrations or by prolonged activation of several signaling pathways. AU-rich elements (ARE) are important cis-acting short sequences in the 3′UTR that mediate recognition of an array of RNA-binding proteins and affect mRNA stability and translation. This review addresses the cellular and molecular mechanisms that are common between inflammation and cancer and that also govern ARE-mediated post-transcriptional control. The first part examines the role of the ARE-genes in inflammation and cancer and sequence characteristics of AU-rich elements. The second part addresses the common signaling pathways in inflammation and cancer that regulate the ARE-mediated pathways and how their deregulations affect ARE-gene regulation and disease outcome
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