scholarly journals The technology of laying bentonite mats on the canal under difficult conditions of work performance

2021 ◽  
Author(s):  
Yu. M. Kosichenko ◽  
◽  
O. A. Baev ◽  
A. V. Ishchenko ◽  
◽  
...  
Keyword(s):  
Work Performance ◽  
Polymeric Materials ◽  
Technical Solution ◽  
Manufacturing Companies ◽  
Natural Conditions ◽  
Screen Design ◽  
Soil Storage ◽  
Main Canal ◽  
Flow Charts ◽  
Conditions Of Work

Purpose: the technology of laying geocomposite bentonite mats with the creation of an anti-filtration lining of increased reliability on the main canal section made under difficult conditions (in the presence of karst and suffusion phenomena) is considered. Materials and methods. The theoretical basis of the research is the indicators of physical, mechanical and technical characteristics of bentonite mats of various manufacturing companies. The practical component is flow charts, diagrams and technology for the work performance in natural conditions on the main canal section. Results and discussion: to reduce the filtration coefficient of anti-filtration coatings it is advisable to use two- and three-layer materials, which were used in the reconstruction of the Donskoy main canal section instead of polymeric materials, according to the results of the feasibility study. The work on laying sodium bentonite mats was carried out in difficult conditions after stopping the water supply, when there was an intense slope sloughing, and the water level in the canal was set below the groundwater level in the canal zone. At the same time, the canal was periodically cleaned with a dredger to remove the swollen soil along the canal bottom, and on the slopes – excavation with a dragline excavator, followed by transportation and soil storage in the slurry dump maps. Further, the work was carried out on maps with pools, separated by dams, where map sections were drained by a mobile pumping station. Conclusions: the use of the developed technology for canal cleaning and laying roll materials based on bentonite made it possible to reconstruct successfully the most dangerous canal sections. The introduction of a structural and technical solution in the form of a combined screen design ensures almost complete water imperviousity of the bottom and slopes of the canal.

scholarly journals Pressure and flow properties of cannulae for extracorporeal membrane oxygenation II: drainage (venous) cannulae

Perfusion ◽  
2019 ◽  
Vol 34 (1_suppl) ◽  
pp. 65-73 ◽  
Author(s):  
Lars Mikael Broman ◽  
Lisa Prahl Wittberg ◽  
C Jerker Westlund ◽  
Martijn Gilbers ◽  
Luisa Perry da Câmara ◽  
...  
Keyword(s):  
Extracorporeal Membrane Oxygenation ◽  
Life Support ◽  
Product Information ◽  
Large Diameter ◽  
Hydrodynamic Performance ◽  
Manufacturing Companies ◽  
Flow Properties ◽  
Pressure Flow ◽  
Membrane Oxygenation ◽  
Flow Charts

The use of extracorporeal life support devices such as extracorporeal membrane oxygenation in adults requires cannulation of the patient’s vessels with comparatively large diameter cannulae to allow circulation of large volumes of blood (>5 L/min). The cannula diameter and length are the major determinants for extracorporeal membrane oxygenation flow. Manufacturing companies present pressure-flow charts for the cannulae; however, these tests are performed with water. Aims of this study were 1. to investigate the specified pressure-flow charts obtained when using human blood as the circulating medium and 2. to support extracorporeal membrane oxygenation providers with pressure-flow data for correct choice of the cannula to reach an optimal flow with optimal hydrodynamic performance. Eighteen extracorporeal membrane oxygenation drainage cannulae, donated by the manufacturers (n = 6), were studied in a centrifugal pump driven mock loop. Pressure-flow properties and cannula features were described. The results showed that when blood with a hematocrit of 27% was used, the drainage pressure was consistently higher for a given flow (range 10%-350%) than when water was used (data from each respective manufacturer’s product information). It is concluded that the information provided by manufacturers in line with regulatory guidelines does not correspond to clinical performance and therefore may not provide the best guidance for clinicians.

scholarly journals The Effect of a Zinc-Containing Additive on the Properties of PVC Compounds

2021 ◽  
Vol 2021 ◽  
pp. 1-14
Author(s):  
Irina N. Vikhareva ◽  
Guliya K. Aminova ◽  
Alexander I. Moguchev ◽  
Aliya K. Mazitova
Keyword(s):  
Negative Impact ◽  
Polymeric Materials ◽  
Joint Production ◽  
Natural Conditions ◽  
Biological Media ◽  
Biodegradable Composite ◽  
Pvc Film ◽  
Important Direction ◽  
Biocidal Additive

Polymeric materials that undergo degradation under the influence of biological media have attracted widespread attention in recent decades. This is due to the ability to eliminate the negative impact on the environment, gradually reducing the scale of plastic waste pollution. At the same time, it remains relevant to ensure the necessary performance characteristics of products for a certain period of use. An important direction in the field of biodegradable composite compositions is the development of nontoxic additives in order to ensure their safe interaction with biological media. In this regard, a method has been developed for the joint production of a new nontoxic plasticizer decyl phenoxyethyl adipate and a biocidal additive of zinc decyl adipate. The effect of the obtained additives on the biodegradation of PVC film samples under natural conditions was studied. The period of biocidal action of zinc compound formed in situ in an amount of 0.3% in the composition of PVC films using the developed plasticizer was determined.

scholarly journals Work Safety Improvement Within Autonomous Maintenance

2020 ◽  
Vol 3 (1) ◽  
pp. 161-171
Author(s):  
Joanna Furman
Keyword(s):  
Lean Manufacturing ◽  
Essential Elements ◽  
Significant Feature ◽  
Legal Obligation ◽  
Manufacturing Companies ◽  
Work Safety ◽  
Potential Source ◽  
Safety Improvement ◽  
Tools And Techniques ◽  
Conditions Of Work

AbstractEmployers are under a legal obligation to provide employees with safe and hygienic conditions of work. These conditions are created by environmental factors that depend on the specifics of the enterprise, production technology and used machinery and equipment. A large number of the risks to which employees are exposed is associated with the use of machinery, equipment and working tools (as confirmed by Statistics Poland). Numerous manufacturing companies increasingly use the practice of involving operators, independently from the maintenance department, in the upkeep and maintenance of machinery and equipment in order to increase efficiency. These activities are undertaken within the scope of Autonomous Maintenance (AM), which is one of the essential elements underpinning the TPM system. The activities performed by operators within AM, such as daily inspections, lubrication or simple repairs, reduce the number of machinery breakdowns. Nonetheless, they could be a potential source of risk for employees. Companies applying the traditional division of tasks entrust the performance of such activities to qualified maintenance staff, so the proper identification of risks that takes into account the specificity of the activities performed by operators and the provision of training in the safe organization of work represent a significant feature of safety improvement. Enterprises may adopt multiple solutions in this regard, including the tools and techniques of the concept of Lean Manufacturing.

Modeling of Completion Installation That Meets Modern Conditions of Work Performance

2015 ◽  
Author(s):  
Oleg Zhuravlev ◽  
Roman Shchelushkin ◽  
Alexey Shadsky ◽  
Roman Prokopcev
Keyword(s):  
Work Performance ◽  
Conditions Of Work

Wertschöpfungsnetzwerk und Produktion integrieren/Integrating supply network and manufacturing: An adaptive, closed-loop-based approach

2020 ◽  
Vol 110 (03) ◽  
pp. 92-97
Author(s):  
Dennis Bauer ◽  
Thomas Bauernhansl ◽  
Alexander Sauer
Keyword(s):  
Adaptive Control ◽  
Closed Loop ◽  
Cost Savings ◽  
Technical Solution ◽  
Supply Network ◽  
Manufacturing Companies ◽  
Solution Component ◽  
Control Loop ◽  
Significant Cost ◽  
Deep Integration

Von der Integration von Wertschöpfungsnetzwerk und Produktion versprechen sich produzierende Unternehmen eine schnellere Reaktion auf Ereignisse und signifikante Kosteneinsparungen. Der Beitrag zeigt einen adaptiven Regelkreis als technischen Lösungsbaustein für solch eine vertiefte Integration.   By integrating supply network and manufacturing, companies expect a faster response to events and significant cost savings. This article shows an adaptive control loop as a technical solution component for such a deep integration.

scholarly journals Process-Driven and Flow-Based Processing of Industrial Sensor Data

Sensors ◽  
2020 ◽  
Vol 20 (18) ◽  
pp. 5245
Author(s):  
Klaus Kammerer ◽  
Rüdiger Pryss ◽  
Burkhard Hoppenstedt ◽  
Kevin Sommer ◽  
Manfred Reichert
Keyword(s):  
Sensor Data ◽  
Technical Solution ◽  
Manufacturing Companies ◽  
Industrial Internet Of Things ◽  
Capture Process ◽  
Processing Pipeline ◽  
Digital Services ◽  
Industrial Internet ◽  
Sensor Processing ◽  
Recorded Data

For machine manufacturing companies, besides the production of high quality and reliable machines, requirements have emerged to maintain machine-related aspects through digital services. The development of such services in the field of the Industrial Internet of Things (IIoT) is dealing with solutions such as effective condition monitoring and predictive maintenance. However, appropriate data sources are needed on which digital services can be technically based. As many powerful and cheap sensors have been introduced over the last years, their integration into complex machines is promising for developing digital services for various scenarios. It is apparent that for components handling recorded data of these sensors they must usually deal with large amounts of data. In particular, the labeling of raw sensor data must be furthered by a technical solution. To deal with these data handling challenges in a generic way, a sensor processing pipeline (SPP) was developed, which provides effective methods to capture, process, store, and visualize raw sensor data based on a processing chain. Based on the example of a machine manufacturing company, the SPP approach is presented in this work. For the company involved, the approach has revealed promising results.

Modeling of Completion Installation That Meets Modern Conditions of Work Performance (Russian)

2015 ◽  
Author(s):  
Oleg Zhuravlev ◽  
Roman Shchelushkin ◽  
Alexey Shadsky ◽  
Roman Prokopcev
Keyword(s):  
Work Performance ◽  
Conditions Of Work

scholarly journals A Review of Research Concerning Lighting in Manufacturing Plants

2013 ◽  
Vol 10 ◽  
pp. 83-88
Author(s):  
Siti Hajar Mohd Yusop ◽  
Ismail Nasiruddin Ahmad ◽  
Muhammad Izzat Nor Ma’arof
Keyword(s):  
Work Performance ◽  
Occupational Safety ◽  
Special Focus ◽  
Manufacturing Companies ◽  
Automotive Manufacturing ◽  
Manufacturing Plants ◽  
Artificial Lighting ◽  
Safety And Health ◽  
Assessment Techniques ◽  
The Common

Based on the Market Watch 2012 with regards to the ASEAN region, Malaysia is the third biggest automotive manufacturing nation which employs more than 300,000 people. To accomplish their operation demands, manufacturing companies such as Proton and Perodua would utilize artificial lighting in their respective manufacturing plants. Research on the effects of artificial lighting on human expended about millions of dollars every years. Sufficient lighting is required for effective tasks completion while providing adequate visual capability, thus will ensure the safety of the operators. Eye strain, migraine and headache are among the common symptoms caused by poor lighting at workplace. This study aims to review on prior research regarding sufficient lighting while giving a special focus on light assessment techniques and tools in determining the luminous level in manufacturing plants. This study will contribute to create awareness among the manufacturing plant on the importance of lighting in term of work performance and occupational safety and health.

scholarly journals Test Method for Rheological Behavior of Mortar for Building Work

2017 ◽  
Vol 11 (3) ◽  
pp. 173-177 ◽  
Author(s):  
Bogdan Korobko ◽  
Ievgen Vasyliev
Keyword(s):  
Rheological Behavior ◽  
Work Performance ◽  
Test Method ◽  
Design Parameters ◽  
Construction Work ◽  
Work Site ◽  
Operation Pressure ◽  
Conditions Of Work ◽  
Valve Ball

AbstractThis paper offers a test method for rheological behavior of mortars with different mobility and different composition, which are used for execution of construction work. This method is based on investigation of the interaction between the valve ball and the mortar under study and allows quick defining of experimental variables for any composition of building mortars. Certain rheological behavior will permit to calculate the design parameters of machines for specific conditions of work performance – mixing (pre-operation), pressure generation, pumping to the work site, workpiece surfacing.

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