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A. M. Kaverkina ◽  
A. A. Kulikova

The work of the Sixth World Professional Forum “The Book. Culture. Education. Innovations” (June 5–13, 2021, Sudak, Republic of Crimea, Russian Federation) is reviewed; its themes and topics are discussed: library mission in the digitization era; pandemic impact on libraries; prospects for library and information community; national information systems; libraries collaboration with research and educational organizations; modern competences of library specialists; partnerships of national libraries, etc. The focus is made on the following events: The Twenty Seventh International Conference «Libraries and information resources in the modern world of science, culture, education and business», The Third Scientific and Educational Symposium “Building and developing the modern digital environment for education and science”; The Fifth Industry Conference “Book publishing and libraries: Vectors of cooperation”. The authors also give overview of discussions and presentations at the open press conference, the work and conclusions of the central discussion site, Day of Crimean Libraries, Day of Rospatent, The Third Scientific Conference “Scientometrics, bibliometrics, open data and publications in science”, The Third International Conference on the global ecological problems, the research and practice events held within the framework of the Forum, as well as the opening and closing ceremonies, and Forum plenary session.

2022 ◽  
Vol 16 (4) ◽  
pp. 47-52
Nail Adigamov ◽  
Andrey Negovora ◽  
Larisa Zimina ◽  
Alexey Maximov

The efficiency of an agricultural car or tractor depends on the characteristics of the engine determined by the gas distribution mechanism (GRM). Traditional timing with fixed valve timing does not provide high-quality gas exchange at all engine operating modes. The aim of the work is to improve the characteristics of the engine by using the hydraulic drive of the timing valves. The drive allows you to turn off individual valves, set the moments of their opening and closing in an arbitrary way, provide several triggering of the internal combustion engine valves during the operating cycle. The drive is controlled by an electronic control unit (ECU). The advantage of the drive is its ease of integration into the internal combustion engine. The hydraulic drive ensures that the timing valves are lifted to a height of about 14 mm. The law of displacement of the valve, revealed experimentally, is close to trapezoidal. The use of a hydraulic valve drive has a positive effect on the "time-section" factor in the area of low and medium crankshaft rotational speeds. The increment of the factor "time-section" is due to the significant speeds of opening and closing the valves. Due to the peculiarities of the kinematic characteristics of the movement of the valves when using a hydraulic drive for their movement, the use of serial phases of gas distribution of the engine is impractical. Numerical modeling of the operation of the internal combustion engine determined the regularity of the change in valve timing from the high-speed operating mode of the engine. Optimization criterion is the achievement of maximum engine power. When choosing the valve timing, the possibility of meeting the intake and exhaust valves with the engine piston was excluded. The use of optimal phases leads to an increase in power up to 4.5% at a low crankshaft speed. With an increase in the speed mode, the increase in power decreases, and with a high frequency of rotation of the crankshaft, its slight decrease (1.4%) is observed. An increase in torque, up to a power utilization factor of 0.9, and its subsequent decrease, allow stabilizing the vehicle speed on a road with variable resistance. An increase in the working pressure in the hydraulic drive of the valves makes it possible to intensify gas exchange even at a high speed of rotation of the crankshaft

Brad A. Meisner

Abstract This article contains excerpts from the opening and closing remarks delivered at CAG2021 – the Annual Scientific and Educational Meeting of the Canadian Association on Gerontology (CAG) – which was hosted virtually from October 21 to 23, 2021. This event commemorated CAG’s 50th anniversary and included 645 delegates from across Canada and the world. The conference theme, “Hindsight 20/20: Looking Back for a Vision Forward in Gerontology,” focused on the burgeoning gerontological work that examines the various and complex ways that COVID-19 has affected older people and aging, as well as the need to develop a stronger emphasis on justice, equity, diversity, and inclusion in the field of gerontology.

Ester E Mnzava ◽  
Annajoyce S Katabalwa

The outbreak of the COVID-19 pandemic has been shown to impact the business environment in different ways. The current paper presents how the university and research library websites in Tanzania responded to the changes in the working environment and style following the outbreak of COVID-19. This study employed a content analysis method to collect and analyse data from academic and research library websites in Tanzania. This study focuses on how library websites in Tanzania were used to update and connect library users with relevant information resources and services during the outbreak of the COVID-19. The findings show that 12 of the 24 library websites had the opening and closing hours, two university library websites had information related to the outbreak of the COVID-19 and 12 had no information related to the outbreak of the COVID-19. This study has an important practical implication for the academic and research librarians on the effective use of library websites for information sharing and communication.

2022 ◽  
Vol 12 ◽  
Qi Li ◽  
Tao Tong ◽  
Wei Jiang ◽  
Jianhui Cheng ◽  
Fenglin Deng ◽  

Flowering is the key process for the sexual reproduction in seed plants. In gramineous crops, the process of flowering, which includes the actions of both glume opening and glume closing, is directly driven by the swelling and withering of lodicules due to the water flow into and out of lodicule cells. All these processes are considered to be controlled by aquaporins, which are the essential transmembrane proteins that facilitate the transport of water and other small molecules across the biological membranes. In the present study, the evolution of aquaporins and their contribution to flowering process in plants were investigated via an integration of genome-wide analysis and gene expression profiling. Across the barley genome, we found that HvTIP1;1, HvTIP1;2, HvTIP2;3, and HvPIP2;1 were the predominant aquaporin genes in lodicules and significantly upregulated in responding to glume opening and closing, suggesting the importance of them in the flowering process of barley. Likewise, the putative homologs of the above four aquaporin genes were also abundantly expressed in lodicules of the other monocots like rice and maize and in petals of eudicots like cotton, tobacco, and tomato. Furthermore, all of them were mostly upregulated in responding to the process of floret opening, indicating a conserved function of these aquaporin proteins in plant flowering. The phylogenetic analysis based on the OneKP database revealed that the homologs of TIP1;1, TIP1;2, TIP2;3, and PIP2;1 were highly conserved during the evolution, especially in the angiosperm species, in line with their conserved function in controlling the flowering process. Taken together, it could be concluded that the highly evolutionary conservation of TIP1;1, TIP1;2, TIP2;3 and PIP2;1 plays important roles in the flowering process for both monocots and eudicots.

Animals ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 106
Karina Lezama-García ◽  
Daniel Mota-Rojas ◽  
Alfredo M. F. Pereira ◽  
Julio Martínez-Burnes ◽  
Marcelo Ghezzi ◽  

This review presents and analyzes recent scientific findings on the structure, physiology, and neurotransmission mechanisms of transient receptor potential (TRP) and their function in the thermoregulation of mammals. The aim is to better understand the functionality of these receptors and their role in maintaining the temperature of animals, or those susceptible to thermal stress. The majority of peripheral receptors are TRP cation channels formed from transmembrane proteins that function as transductors through changes in the membrane potential. TRP are classified into seven families and two groups. The data gathered for this review include controversial aspects because we do not fully know the mechanisms that operate the opening and closing of the TRP gates. Deductions, however, suggest the intervention of mechanisms related to G protein-coupled receptors, dephosphorylation, and ligands. Several questions emerge from the review as well. For example, the future uses of these data for controlling thermoregulatory disorders and the invitation to researchers to conduct more extensive studies to broaden our understanding of these mechanisms and achieve substantial advances in controlling fever, hyperthermia, and hypothermia.

2022 ◽  
pp. 48-59
Ester Ernest Mnzava

This chapter presents an experience shown by university and research library websites in Tanzania following the outbreak of COVID-19. Content analysis was the main method of data collection and analysis in which the contents of the selected websites were explored to establish various services. Thus, the analysis of the selected library website contents revealed that 12 of 24 library websites had the opening and closing hours, two university library websites had information related to the outbreak of the COVID-19, and 12 had no information related to the outbreak of COVID-19 or changes in the library services following the outbreak of COVID-19. This chapter concludes that library websites provide opportunities for the libraries to serve their users conveniently. However, the experience given by some of the university and research library websites in Tanzania shows a lack of information on how particular libraries serve their users when the working environment and style changed following the outbreak of COVID-19.

2021 ◽  
Vol 8 (2) ◽  
pp. 157-168
Abdul Aziz ◽  
Siti Khoirun Niswah ◽  
Faisal Mahmuoud Adam Ibrahim

It is believed that memorizing the Qur’an would be able to improve the acquisition of a second language, especially Arabic language, particularly for early childhood. This is because children have quite sharp hearing, so they quickly acquire Arabic language as their second language. The language acquisition is done by listening and kinesthetic methods. For this purpose, the study aims to describe the process of acquiring Arabic in early childhood at Daarut Tahfidz lil Athfal Malang. Researchers applied descriptive qualitative research and case study methods. Data obtained by observation and interviews. The results showed that learning activities to memorize the Qur’an can accelerate language acquisition in early childhood who previously had not been able to pronounce sentences perfectly. At the opening and closing of the lesson, the teacher in the class always reminds the mufradât (vocabulary) that has been delivered, so that it will strengthen their memory in Arabic language. The research is expected to provide an overview of the importance of providing Arabic language learning from an early age in order to strengthen Islamic teachings from an early age.

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