The state of the respiratory system of students in conditions of high-altitude hypoxia

The article presents the results of studies on the influence of mountain hypoxia on the state of the students’ respiratory system. When exposed to oxygen deficiency, only the respiratory capacity of the lungs undergoes significant changes. For instance, the RC level in female students under the influence of hypoxia gradually increased in conditions of medium altitude, reaching the maximum value of 0.64 liters (P ˂ 0.05), and on the plain - 0.44 liters. The RC value in young men reached the highest value of 0.74 liters in mid-altitude conditions, and on the plains, it constitutes 0.56 liters. The highest respiration rate for young men of 18.2 movements per minute was noted at an altitude of 600 meters, and the lowest - 17.4 at an altitude of 170 m. The maximum level of respiratory capacity while inhaling in girls is 1.24 liters, detected at an altitude of 600 meters, and the minimum level of 1.18 liters is noted at 170 m. The value of respiratory capacity while exhaling among young men living in the Sharoi region increased to 2.32 liters, and for those from Grozny - 2.24 liters. The highest VC level in girls - 3.87 liters - was found in the middle mountains, and on the plains, it was 3.58 liters. The VC value in young men, gradually increasing, reaches the highest value under the conditions of the Sharoi region - 4.57 liters, and in Grozny it was 4.28.

Living wage for workers in conditions of industrial development in Vietnam

The living wage is defined by researchers as the salary that workers receive during normal working hours, which is enough to maintain a decent standard of living for themselves and their families. Therefore, it is different from the concept of minimum wage being applied as a basis for paying wages to workers today. Vietnam's minimum wage is calculated as the minimum to escape poverty, but not the minimum wage to ensure a decent minimum living in a developed economy. The minimum level to escape poverty is often applied in the condition that the country prioritizes economic development, but in the current period, the minimum wage must be a living wage to realize inclusive and inclusive development. leave behind. In the condition that Vietnam has become a middle-income country, the minimum wage Vietnam needs to aim for must be a living minimum wage. Therefore, this article analyzes the basis of paying a living wage for workers in Vietnam in the context of changing the economic model from the traditional to the industrial development model in Vietnam today.

EFFECT OF DOUBLE BOTTOM HEIGHT ON THE STRUCTURAL BEHAVIOUR OF BULK CARRIERS

This is the first of a series of companion papers that the authors propose to present on the effect that the new CSR Rules will have on the design of bulk carriers. Our initial focus will be on the new design framework established for the inner bottom height of such vessels, a parameter critical to their structural integrity. It examines the effect that double bottom height reduction has on the reliability of the bulk carrier structure, by applying a finite element 3D - 3 hold analysis of varying double bottom heights to a typical current Panamax bulk carrier design. The results are compared to pre and post IACS CSR[2] requirements. The conclusion reached is that the establishing of the double bottom height should not be left to direct calculations. A minimum acceptable height should be established in order to maintain a minimum level of structural reliability and safety.

Cryptocurrency as a payment agent

The paper examines the essence of cryptocurrency as a method of payment has been investigated and identifies its key features (exchange for goods or services; exchange for classic currency; payment for goods and services; minimum level of possibility of abduction; payments, fast and direct transactions; investment asset; business development in cryptocurrency). Different approaches to determining the legal nature of cryptocurrency are analyzed (cryptocurrency as a method of payment; cryptocurrency as a foreign currency; cryptocurrency as a financial asset; cryptocurrency as a financial pyramid). The conclusions of the EU court, the courts of the national system on the use of cryptocurrency as a means of payment are analyzed. The legal nature of cryptocurrency is determined through the prism of world practices of its use. The possibility of using cryptocurrencies in terms of their ability to perform the basic functions of money is analyzed. The paper examines two attempts of legislators to regulate the issues of taxation, legal nature and legal regulation of cryptocurrency in 2019 and 2020. Attention is also paid to the relevant institutions where you can pay with cryptocurrencies, namely: “Spendabit”, “CoinATMRadar”, exchange office in online networks – WebMoney. According to the National Bank of Ukraine, the danger of cryptocurrency transactions is indicated. Examples of the main risks associated with the purchase, sale, exchange and conversion of cryptocurrencies are given (possibility of loss of funds due to theft, possibility of fraud, lack of infrastructure, significant price fluctuations of cryptocurrencies, lack of guarantees for return of invested funds in cryptocurrencies). In conclusion, attention is drawn to the need for legislative regulation of the essence of cryptocurrency for further effective evolution.

Research of the biostability of organic bases of paints for wood

The biostability of organic film-formers of paints and varnishes intended for staining wood to the action of the fungus Aspergillus niger was studied. It was found that in Sabouraud's environment on days 7, 14 and 21 from the beginning of infection, the epoxy hardener is characterized by the minimum level of damage, respectively, 1, 1.6 and 2.4 points; alkyd film former has 2 points, and in subsequent time intervals 3.7 points; epoxy resin on day 7 is characterized by a lesion level of 1.7 points, on the following days of exposure – 4 points; pentaphthalic film former, respectively, 2.7, 3.7 and 4 points. According to the degree of resistance in the Sabouraud environment, organic film-formers of wood paints can be ranked as follows: epoxy (hardener)>alkyd>epoxy resin>pentaphthalic>organosilicon. It is shown that in the environment of Czapek on 7, 14 and 21 days from the beginning of infection, the minimum level of damage is characterized by an epoxy hardener, respectively, 2, 2.3 and 3 points; pentaphthalic film former, respectively, 2 and 3 points; alkyd film former, respectively, 2.4, 3.7 and 4 points; epoxy resin on day 7 is characterized by a lesion level of 3 points, on the following days of exposure – 4 points. According to the degree of resistance in the environment of Czapek, organic film-forming agents for wood paints can be ranked as follows: epoxy (hardener)>pentaphthalic>alkyd>epoxy resin>organosilicon. Organosilicon film-formers were most intensively affected by the fungus both 7 days after exposure and at a later time, reaching the maximum values of the lesions – 4 points. During the test period, no zones of mycelium growth inhibition were observed in the studied organic bases

Penerapan Model Pembelajaran Kooperatif Tipe Jigsaw dengan Masalah Open-Ended sebagai Upaya Meningkatkan Kreativitas Siswa

This research is based on the low creativity of students and the low active activity of students in solving mathematical problems caused by the low ability of teachers to understand learning models in learning activities. Less relevance of the learning model applied by the teacher to the objectives and characteristics of mathematics. This study aims to increase students' creativity and activity in solving mathematical problems by applying the Jigsaw type cooperative learning model. This research is a Classroom Action Research conducted at SMK Negeri 2 DEPOK with the research subject being class XI Boga III with the object of research being the application of the Jigsaw type cooperative learning model with open-ended problems as an effort to increase student creativity. The results of the data analysis in the first cycle showed that the average creativity value was 67.75 or 70% of the number of students who took the test had a minimum level of creativity in the sufficient category and 30% had a creativity level below the sufficient category. In the second cycle, the average value of the creativity test was 76.94%, at least the sufficient category and 10% had the creativity level below the sufficient category. Based on the results in cycles I and II, it can be concluded that the application of Jigsaw cooperative learning can increase students' creativity and the level of student activity during learning has met the targets applied. Keywords: Mathematics, Cooperative Learning, Jigsaw, Student Creativity

Optimal Scheduling of the Peirce–Smith Converter in the Copper Smelting Process

Copper losses during the Peirce–Smith converter (PSC) operation is of great concern in the copper smelting process. Two primary objectives of the PSC are to produce blister copper with a shorter batch time and to keep the copper losses at a minimum level. Due to the nature of the process, those two objectives are contradictory to each other. Moreover, actions inside the PSC are subject to several operational constraints that make it difficult to develop a scheduling framework for its optimal operation. In this work, a basic but efficient linear multi-period scheduling framework for the PSC is presented that finds the optimal timings of the PSC operations to keep the copper losses and the batch time at a minimum level. An industrial case study is used to illustrate the effectiveness of the proposed framework. This novel solution can be implemented in other smelting processes and used for the design of an inter-PSC scheduling framework.

Responsiveness to inhibitory signals changes as a function of colony size in honeybees ( Apis mellifera )

Biological collectives, like honeybee colonies, can make intelligent decisions and robustly adapt to changing conditions via intricate systems of excitatory and inhibitory signals. In this study, we explore the role of behavioural plasticity and its relationship to network size by manipulating honeybee colony exposure to an artificial inhibitory signal. As predicted, inhibition was strongest in large colonies and weakest in small colonies. This is ecologically relevant for honeybees, for which reduced inhibitory effects may increase robustness in small colonies that must maintain a minimum level of foraging and food stores. We discuss evidence for size-dependent plasticity in other types of biological networks.

EBIRCH Localization for Low-Current Soft Fails

An experimental study was undertaken to determine the minimum level of leakage or shorting current could be detected by EBIRCH. A 22 nm SRAM array was overstressed with a series gradually increasing bias, followed by EBIRCH scans with 1 V applied bias and 2 kV SEM imaging, until fins were observed. The result was that with only 12 nA of shorting current, the fins of a pulldown device could be imaged by EBIRCH. Higher stresses created an ohmic short, and careful consideration of experiments with current direction provide additional evidence that EBIRCH is largely a temperaturedriven, or Seebeck effect.

Environmental test of improved in vitro potato varieties in the conditions of Central Yakutia

Ecological tests of improved in vitro plants - potato regenerants of promising and zoned in Central Yakutia varieties have been carried out on cryogenic flood plain fibrous saline soils. To conduct a field experiment, clones adapted to the soil (2019) and their tuberous offspring (2020) were planted at the end of May. It was revealed that the most resistant to open ground conditions were regenerants of the Krasavchik variety (survival rate - 28.0 %); the least adapted variety was Vasilek (1.0 %). It has been established that among improved zoned varieties the most tolerant to arid conditions of vegetation (hydrothermal coefficient 0.4) and more productive (average tuber weight 213.9 g) was the Adretta variety. High index of tuber safety (100.0±5.0 %) was observed in Adretta variety (37 pcs.) and promising varieties Riviera (18 pcs.), Triumf (40 pcs.) and Rodrigo variety (16 pcs., 94.1±4.7 %). Zoned variety Vasilek (12 pcs., 80.0±4.0 %) and promising variety Assol (77.3±3.9 %, 17 pcs.) had no statistical difference in these indexes. The safety of Krasavchik variety tubers was 69.1±4.0 % (241pcs.). Zoned variety Rozard (65 pcs., 55.6±2.8 %) and promising Ilona variety had the same tuber safety. Minimum level of tuber safety was observed in Velina variety (18 pcs., 33.3±1.7 %).