Laboratory Management in Improving the Tri Dharma of Higher Education in The Department of Mining Engineering

Improving the quality of laboratory services must always be improved in improving the quality of the tri dharma of higher education. Good laboratory management is one of the supporting factors, for that reason, the Department of Mining Engineering manages the laboratory. Laboratory management, in this case, is the laboratory equipment inventory system and laboratory control system. This system will be used to carry out monitoring data on the use of website-based laboratory equipment where the use of laboratory equipment must be carried out systematically. The first step is to create a web system for administration and inventory in the laboratory. In this study, in conducting website-based lab management, it is also necessary to map the problems faced by students in relation to services and supporting infrastructure in the laboratory.

The use of resilience engineering tools for fault propagation mitigation in sociotechnical systems

Purpose – To demonstrate an application of resilience engineering, aiming to improve productivity and quality by decreasing variability and fault propagation in the production functions of a sociotechnical system, the object of the study, in an asphalt concrete production plant. Design/methodology/approach – The approach used was the functional resonance analysis method, where experts in sociotechnical systems were interviewed, eliciting their knowledge on the aspects of interaction between production functions. The elicited knowledge was entered into FRAM Model Visualizer 0.4.1 software, which presents a graphical map of the system and allows the number of couplings (NC) to be analyzed. Findings – The analysis of the NCs highlighted that the laboratory control, burner, drum dryer, and baghouse functions showed a high potential for variability absorption, while the PLC control system and laboratory control functions have a high potential for fault propagation. Both groups were examined and measured explored within the scope of resilience engineering that enhance their roles in mitigating resilience within the system. Originality/value – The replication of the resilience engineering discussed in this article enables gains in productivity and quality in sociotechnical systems for the same segment; the application of the functional resonance analysis methodology demonstrated can benefit further studies on productive systems with interaction between people and technology. Keywords - Resilience engineering, productive systems, sociotechnical systems, FRAM.

Impact of wearing a surgical and cloth mask during cycle exercise

We sought to determine the impact of wearing cloth or surgical masks on the cardiopulmonary responses to moderate-intensity exercise. Twelve subjects (n=5 females) completed three, 8-min cycling trials while breathing through a: non-rebreathing valve (laboratory control), cloth, or surgical mask. Heart rate (HR), oxyhemoglobin saturation (SpO2), breathing frequency (Fb), mouth pressure, partial pressure of end-tidal carbon dioxide (PetCO2) and oxygen (PetO2), dyspnea, were measured throughout exercise. A subset of n=6 subjects completed an additional exercise bout without a mask (ecological control). There were no differences in Fb, HR or SpO2 across conditions (all p>0.05). Compared to the laboratory control (0.9±0.7cmH2O[mean±SD]), mouth pressure swings were greater with the surgical mask (4.7±0.9; p<0.0001), but similar with the cloth mask (3.6±4.8cmH2O; p=0.66). Wearing a cloth mask decreased PetO2 (-3.5±3.7mmHg) and increased PetCO2 (+2.0±1.3mmHg) relative to the ecological control (both p<0.05). There were no differences in end-tidal gases between mask conditions and laboratory control (both p>0.05). Dyspnea was similar between the control conditions and the surgical mask (p>0.05) but was greater with the cloth mask compared to laboratory (+0.9±1.2) and ecological (+1.5±1.3) control conditions (both p<0.05). Wearing a mask during short-term moderate-intensity exercise may increase dyspnea but has minimal impact on the cardiopulmonary response. Novelty bullets: • Wearing surgical or cloth masks during exercise has no impact on breathing frequency, tidal volume, oxygenation, heart rate • However, there are some changes in inspired and expired gas fractions that are physiologically irrelevant. • In young healthy individuals, wearing surgical or cloth masks during submaximal exercise has few physiological consequences.

Ecological And Hygienic Aspects Of Optimization Of Water Supply Of The Population

The high quality of drinking water is the result of a comprehensive solution to a number of problems, the main of which are the development and implementation of modern water treatment technologies, the use of effective laboratory control mechanisms, optimization of water supply, an integral approach to assessing the quality of drinking water, the use of hygienically sound solutions in terms of water supply and sanitation.

Assessment of carcinogenic risk caused by the impact of the environmental factors on urban population health

Introduction. The high level of environmental pollution in industrial cities, including carcinogens, causes an unacceptable risk to public health. In this regard, a quantitative risk assessment is required to develop preventive measures to reduce it. The aim of the study was to assess the carcinogenic risk to the health of the population of an industrialized city, caused by the probable presence of carcinogens in the ambient air, drinking water of the centralized water supply system, and the soil of the residential area. Material and research methods. The laboratory control of the content of carcinogens in environmental objects of the city of Voronezh for 2017-2020 was used as the reference data. The carcinogenic risk was assessed under the provisions of Guideline R. 2.1.10.1920-04 “Guidelines for assessing the risk to public health when exposed to chemicals that pollute the environment.” Results. Taking into account the regional peculiarities of the composition of pollutant emissions into the atmospheric air, 1,3-butadiene (source - production of synthetic rubber) should be classified as priority carcinogens requiring systematic monitoring and measures to reduce emissions and, accordingly, concentrations in the surface layer of atmospheric air and chromium6+ compounds (the main source is an aircraft plant), which contribute 69.9-75.7% and 21.7-26.9%, respectively, to the total values of the individual carcinogenic risk, which exceeds the maximum permissible level (1 • 10-4). The carcinogenic risk from exposure to drinking water pollutants (halogenated organic substances) and soil (under the scenario of accidental ingestion by preschool children) is below the maximum permissible risk (1 • 10-4). Conclusion. It is necessary to pay attention to increasing the sensitivity of the applied laboratory control methods, expanding the list of controlled carcinogenic pollutants, improving the monitoring system of carcinogens, and implementing measures to reduce the carcinogenic risk associated with atmospheric air pollution.

Valve-sparing aortic root reconstruction

This paper reviews the current main approaches to valve-sparing aortic root reconstruction. The advantages of valve-sparing surgeries are obvious - low mortality, longer survival, better quality of life of the operated patients, since the techniques save the heart's pumping reserves and free the patient from continuous intake of direct-acting oral anticoagulants and laboratory control of the hemostasis system, as well as other prosthesis-associated specific complications.