scholarly journals Continuous Production of Water-Borne Polyurethanes: A Review

Polymers ◽  
2020 ◽  
Vol 12 (12) ◽  
pp. 2875
Author(s):  
Xuehua Liu ◽  
Wei Hong ◽  
Xudong Chen
Keyword(s):  
Dispersion Medium ◽  
Continuous Production ◽  
Environmentally Friendly ◽  
Functional Polymers ◽  
Production Processes ◽  
Water Borne

Water-borne polyurethanes are novel functional polymers that use water as the dispersion medium. When compared with solvent-borne polyurethanes, water-borne polyurethanes are more environmentally friendly and easier to transport and store. Water-borne polyurethanes have attracted increasing attention due to their extensive applications in plastics, paints, adhesives, inks, biomaterials, and other fields. In this study, the characteristics of water-borne polyurethanes were discussed, followed by a review of studies detailing reaction procedures and mechanisms for their continuous production. Additionally, current and future applications of continuous production processes for water-borne polyurethanes are presented.

scholarly journals A control architecture for continuous production processes based on industry 4.0: water supply systems application

2021 ◽  
Author(s):  
Edgar Chacón ◽  
Luis Alberto Cruz Salazar ◽  
Juan Cardillo ◽  
Yenny Alexandra Paredes Astudillo
Keyword(s):  
Water Supply ◽  
Industry 4.0 ◽  
Power Plants ◽  
Continuous Production ◽  
Continuous Process ◽  
Oil Refining ◽  
Water Supply Systems ◽  
Manufacturing Operations ◽  
Production Processes ◽  
Service Disruption

AbstractIndustry 4.0 (I4.0) brings together new disruptive technologies, increasing future factories’ productivity. Indeed, the control of production processes is fast becoming a key driver for manufacturing operations. Manufacturing control systems have recently been developed for distributed or semi-heterarchical architectures, e.g., holonic systems improving global efficiency and manufacturing operations’ reactiveness. So far, previous studies and applications have not dealt with continuous production processes, such as applications for Water Supply System (WSS), oil refining, or electric power plants. The complexity of continuous production is that a single fault can degrade extensively and even cause service disruption. Therefore, this paper proposes the Holonic Production Unit (HPU) architecture as a solution to control continuous production processes. An HPU is created as a holon unit depicting resources in a continuous process. This unit can detect events within the environment, evaluate several courses of action, and change the parameters aligned to a mission. The proposed approach was tested using a simulated model of WSS. The experiments described in this paper were conducted using a traditional WSS, where the communication and decision-making features allow the application of HPU. The results suggest that constructing a holarchy with different holons can fulfill I4.0 requirements for continuous production processes.

scholarly journals Star fruit juice business development strategy planning using the SWOT method and Fuzzy Analytical Hierarchy Process (FAHP) (Case Study of CV Angkasa Jaya, Blitar City)

2021 ◽  
Vol 3 (1) ◽  
pp. 26-32
Author(s):  
Miftakhurrizal Kurniawan ◽  
Imam Santoso ◽  
Harry Mangatur Silaban
Keyword(s):  
Analytical Hierarchy Process ◽  
Continuous Production ◽  
Production Capacity ◽  
External Factors ◽  
Market Potential ◽  
Government Support ◽  
Fuzzy Analytical Hierarchy Process ◽  
Production Processes ◽  
Internal And External Factors ◽  
Hierarchy Process

The purpose of this study is to analyze the internal and external factors that influence development and provide proposals for competitive strategies which are the priority of developing CV Angkasa Jaya. This study uses Strength, Waekness, Opportunity and Threat (SWOT) methods to identify internal and external factors of the company as well as alternative strategic planning and Fuzzy Analytical Hierarchy Process (FAHP) for determining strategic priorities. The results showed that internal and external factors that affected were products, marketing, production processes, the existence of government support, fruit beverage trends, market potential, technology, competition, shifting market tastes, economy and substitute products. Alternative strategies that become priority development strategies that can be applied by CV Angkasa Jaya are to increase the use of production technology and the internet, improve and maintain product quality in order to be able to compete with other products, develop business potential by making product innovations, carry out continuous production processes, improve and maintain market share, increase production capacity and the last priority is to increase promotion.

TRENDS IN THE PROCESS OF GREENING LUBRICANTS

Tribologia ◽  
2020 ◽  
Vol 290 (2) ◽  
pp. 91-98
Author(s):  
Wiesław ZWIERZYCKI ◽  
Kasper GÓRNY
Keyword(s):  
Global Warming ◽  
Environmentally Friendly ◽  
Technological Medium ◽  
Lubricating Oils ◽  
Engine Oils ◽  
Exchange Program ◽  
Production Processes ◽  
Harmful Substances ◽  
Global Exchange ◽  
The Impact

In this article, the authors have characterized the main activities that reduce the impact of lubricants on the environment. To begin with, new solutions in the area of engine oils that reduce the emission of harmful substances in exhaust gases (“Low SAPS” oils) were discussed. Next, the activities concerning the improvement of biodegradability of lubricating oils used in devices in Nature Reserves, as well as in all of the “open lubrication systems” were characterized. Another problem was related to the non-toxicity (and other derivative features) of lubricants that may have incidental contact with a sensitive technological medium in production processes (in the food, pharmaceutical, and cosmetics industries). The last issue that was discussed concerns the compatibility of compressor oils with refrigerants in connection with the global exchange program of Freon for more environmentally friendly substances (currently, mainly affecting global warming to a lesser extent).

Management of Experience Knowledge in Continuous Production Processes

2009 ◽  
Vol 42 (4) ◽  
pp. 2173-2178 ◽  
Author(s):  
Sebastian C. Brandt ◽  
Marcus Schlüter ◽  
Marcus Raddatz ◽  
Matthias Jarke
Keyword(s):  
Continuous Production ◽  
Production Processes

scholarly journals Continuous production of Neisseria meningitidis outer membrane vesicles

2019 ◽  
Vol 103 (23-24) ◽  
pp. 9401-9410
Author(s):  
Matthias J.H. Gerritzen ◽  
Lilli Stangowez ◽  
Bas van de Waterbeemd ◽  
Dirk E. Martens ◽  
René H. Wijffels ◽  
...  
Keyword(s):  
Steady State ◽  
Neisseria Meningitidis ◽  
Outer Membrane ◽  
Continuous Production ◽  
Membrane Vesicles ◽  
Outer Membrane Vesicles ◽  
Volumetric Productivity ◽  
Batch Processes ◽  
Capital Costs ◽  
Production Processes

Abstract Outer membrane vesicles (OMVs) are nanoparticles secreted by Gram-negative bacteria that can be used for diverse biotechnological applications. Interesting applications have been developed, where OMVs are the basis of drug delivery, enzyme carriers, adjuvants, and vaccines. Historically, OMV research has mainly focused on vaccines. Therefore, current OMV production processes have been based on batch processes. The production of OMVs in batch mode is characterized by relatively low yields and high costs. Transition of OMV production processes from batch to continuous processes could increase the volumetric productivity, reduce the production and capital costs, and result in a higher quality product. Here, we study the continuous production of Neisseria meningitidis OMVs to improve volumetric productivity. Continuous cultivation of N. meningitidis resulted in a steady state with similar high OMV concentrations as are reached in current batch processes. The steady state was reproducible and could be maintained for at least 600 h. The volumetric productivity of a continuous culture reached 4.0 × 1014 OMVs per liter culture per day, based on a dilution rate of 1/day. The tested characteristics of the OMVs did not change during the experiments showing feasibility of a continuous production process for the production of OMVs for any application.

The Relation Between ICT and Environmental Management Practice in a Construction Company

2011 ◽  
pp. 1099-1117
Author(s):  
Mattias Jacobsson ◽  
Anneli Linde ◽  
Henrik Linderoth
Keyword(s):  
Construction Industry ◽  
Management Practice ◽  
Construction Project ◽  
Environmentally Friendly ◽  
Construction Company ◽  
Construction Companies ◽  
Ict Use ◽  
Production Processes ◽  
Comprehensive Survey ◽  
Decision Making Processes

The aim of this chapter is to draw attention to the use of ICT in the building and construction industry with a special interest in the day-to-day activities of those companies that are working to develop more environmentally friendly and sustainable production processes. The chapter is based on a comprehensive survey of ICT use and attitudes to environmental related issues in middle and large sized construction companies in Sweden and two case studies: One of ICT use in a larger Swedish building and construction company and one of communication, coordination, and decision making processes in a construction project. Based on the empirical data we argue that in order to enhance a more environmentally friendly building and construction industry there is a need for a more genuine cooperation and knowledge sharing between different actors both in crossing project boundaries as well as overriding contractual limitations. Decisions in a construction project must be taken earlier in the process and construction companies need to focus more on those processes over which they actually do have power.

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