scholarly journals Separation of Water from Mixtures Containing Formaldehyde, Water, Methanol, Methylal, and Poly(oxymethylene) Dimethyl Ethers by Pervaporation

2021 ◽  
Author(s):  
Niklas Schmitz ◽  
Christian F. Breitkreuz ◽  
Eckhard Stöfer ◽  
Jakob Burger ◽  
Hans Hasse
Keyword(s):  
Polymer Membranes ◽  
New Production ◽  
Zeolite Membranes ◽  
Synthetic Fuel ◽  
Production Processes ◽  
Membrane Flux

In this work, pervaporation experiments were carried out, in which water was separated from mixtures containing formaldehyde, water, methanol, methylal, and poly(oxymethylene) dimethyl ethers (OME). This separation is interesting for new production processes for the synthetic fuel OME. Five commercial membranes were studied: two zeolite membranes (Type NaA and Type T from Mitsui & Co.) and three PVA-based polymer membranes (PERVAP 4100, PERVAP 4101, and PERVAP 4102 from DeltaMem AG). The membrane flux and the composition of the permeate have been measured. The zeolite membranes were tested at 343 K and 7 mbar permeate pressure and the polymer membranes were tested at 353 K and 2 mbar permeate pressure. The investigated mixtures are inherently reactive, as formaldehyde reacts both with water and methanol. The zeolite membranes could only be used once, whereas the polymer membranes showed no significant degradation in a repeat experiment.

Origins and consequences of economic globalization: moving beyond a flawed orthodoxy

2021 ◽  
pp. 135406612098342
Author(s):  
Syed Javed Maswood
Keyword(s):  
United States ◽  
Economic Globalization ◽  
The United States ◽  
Global Network ◽  
New Production ◽  
Supply Chain Networks ◽  
Geographically Dispersed ◽  
Production Processes ◽  
Technological Advances ◽  
Liberal Trade

Contemporary economic globalization is typically seen as a product of both trade and economic liberalization after the Second World War and of technological advances that have made it possible to overcome coordination and management of geographically dispersed production units. Trade liberalization and technological advances were certainly important variables, but I argue that it was neo-protectionist American policies of the early 1980s that provided the initial catalyst for globally networked production processes. American protectionism encouraged Japanese investment in the United States that allowed US car manufacturers to learn the essentials of network manufacturing as practiced by Japanese transplants in the United States. In the next stage of global network manufacturing, liberal trade played a much more pivotal role because the global supply chains could not obviously be maintained without liberal trade. In this paper, I also discuss the likelihood of a reversal and suggest that globalization is unlikely to reversed in a significant way. Liberal trade is essential to the integrity of global supply chain networks, but these new production processes have themselves created a firewall against future systemic protectionism.

Mobile Bearbeitung von Faserverbundstrukturen/Mobile machining of fiber-reinforced plastics

2017 ◽  
Vol 107 (09) ◽  
pp. 656-661
Author(s):  
H. Susemihl ◽  
C. Korth ◽  
C. Bremer ◽  
T. Brencher
Keyword(s):  
Worker Safety ◽  
Fiber Reinforced ◽  
New Production ◽  
Reinforced Plastics ◽  
Large Structures ◽  
Production Processes ◽  
Fiber Reinforced Plastics

Bei der Bearbeitung großer Strukturen dominieren aktuell Maschinen, deren Größe vom Bauteil bestimmt wird. Die hier beschriebene Technologie führt zu einer prozessbestimmten Auslegung der Anlage und damit zu neuen Produktionsprozessen. Dazu wird ein selbständig navigierendes Transportsystem mit Roboter und Mehrachs-Bearbeitungseinheit eingesetzt. Verschiedene Sub-Systeme gestatten es, die Genauigkeit der Positionierung, Bearbeitung und Personensicherheit zu gewährleisten.   Current machining trimming of large structures is done using machines of sizes determined by the parts’ dimensions. Instead, the technology described here permits a process driven design and thus new production processes. To achieve this, a self-navigating platform is equipped with a robot and a multi-axle-milling unit and been enhanced with sub-systems for navigation, referencing and worker safety.

Circularity in Portugal

2020 ◽  
pp. 224-240
Author(s):  
Ana Cristina Pego
Keyword(s):  
Decision Making ◽  
Renewable Energy ◽  
Conceptual Model ◽  
Circular Economy ◽  
Raw Materials ◽  
Sustainable Consumption ◽  
New Production ◽  
Business Decision ◽  
Production Processes ◽  
New Methodologies

The use of renewable energy and recycling products is one of the main achievements of organizations. The circular economy (CE) is a new concept which evolves out of a new management assumption in organizations based on recycling, reuse, and repurposing of products. The circular economy provides a framework for facing challenges and a guide for rethinking and redesigning the future. This chapter analyzes the Portuguese market for circular economy organizations based on discussion of the CE conceptual model. The circular economy is expected to contribute positively by introducing new methodologies for the production of raw materials, with new production processes and giving value to eco products. The challenge for Portuguese organizations is to create management “vectors” which promote networking innovation, labor, capital, and eco products. Overall, the conceptual model presented gives importance to Portuguese business decision making for sustainable consumption, which provides advancements in business for the green supply chain.

scholarly journals Development of new production processes for aluminum

2019 ◽  
Vol 69 (1) ◽  
pp. 15-21
Author(s):  
Yoichi Kojima ◽  
Tetsuya Tsuda ◽  
Koichi Ui ◽  
Mikito Ueda ◽  
Masao Miyake
Keyword(s):  
New Production ◽  
Production Processes

scholarly journals A green chemistry-based classification model for the synthesis of silver nanoparticles

2015 ◽  
Vol 17 (5) ◽  
pp. 2825-2839 ◽  
Author(s):  
Marco Cinelli ◽  
Stuart R. Coles ◽  
Mallikarjuna N. Nadagouda ◽  
Jerzy Błaszczyński ◽  
Roman Słowiński ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Green Chemistry ◽  
Multiple Criteria ◽  
Classification Model ◽  
New Production ◽  
Multiple Criteria Decision Aiding ◽  
Decision Aiding ◽  
Production Processes

The Multiple Criteria Decision Aiding (MCDA) method allows the derivation of a model that can be used for classification of existing or new production processes for silver nanoparticles in preference-ordered classes on the basis of the principles of green chemistry.

scholarly journals Qualidade total na formação profissional: do texto ao contexto

2019 ◽  
Vol 76 (182/183) ◽  
Author(s):  
Maria Laura Franco
Keyword(s):  
Educational System ◽  
Quality Education ◽  
Formation Professionnelle ◽  
Total Quality ◽  
New Production ◽  
Production Processes ◽  
Education Concept

Discute o conceito de qualidade de ensino, sua relação com o significado de qualidade total e seus desdobramentos para a educação; questiona a dicotomia quantidade x qualidade no âmbito do sistema educacional brasileiro; explica o vínculo que se estabelece entre os indicadores implícitos na concepção de ensino de qualidade e as demandas provenientes dos novos processos de produção e suas exigências para a formação profissional. Abstract This article discusses the concept of quality education, its relation to the significance of Total Quality, and its implications on education. It questions the quality-quantity dichotomy in the scope of the Brazilian educational system. It spells out the link between the indicators implicit in the quality education concept and the demands brought by the new production processes and the requirements entailed in the education of the professional. Résumé Cet article présente une discussion du concept de Qualité de l'Enseignement, son rapport avec la signification de Qualité Totale et ce qu 'il implique dans le domaine de l 'éducation; une mise en question de la dichotomie quantité/qualité dans le cadre du système d'éducation brésilien; la mise en évidence du lien qui se forme entre les indicateurs implicites dans la conception de l'enseignement de qualité face aux demandes issues des nouveaux processus de production et de leurs exigences vis-à-vis de la formation professionnelle. Resumen El artículo discute el concepto de cualidad de la enseñanza, su relación con el significado de Cualidad Total y sus implicaciones en la educación; cuestiona la dicotomía cuantidadx cualidad en el ámbito del sistema educacional brasileño; expone el vínculo que se establece entre los indicadores implícitos en la concepción de la ensenanza de cualidad con las demandas provenientes de los nuevos procesos de producción y sus exigencias para la formación profesional.

New Production Processes of Dichlorohydrins from Glycerol Using Acyl Chlorides as Catalysts or Reactants

2016 ◽  
Vol 55 (6) ◽  
pp. 1484-1490 ◽  
Author(s):  
R. Vitiello ◽  
R. Tesser ◽  
E. Santacesaria ◽  
M. Di Serio
Keyword(s):  
New Production ◽  
Acyl Chlorides ◽  
Production Processes

scholarly journals Planning of Regional Spatial Development According to Ecosystem Principle

2021 ◽  
pp. 69-79
Author(s):  
Lyudmila Borsch ◽  
◽  
Svetlana Gerasimova ◽  
Galina Panaedova ◽  
◽  
...  
Keyword(s):  
Regional Economy ◽  
Methodological Approach ◽  
Spatial Development ◽  
Human Mind ◽  
Quantitative Aspect ◽  
New Production ◽  
Production Processes ◽  
The Social ◽  
The Future ◽  
Conceptual Foundations

The article presents the position of the authors on the study of the relevant scientific and practical problem of planning, perspective spatial regional development by means of changing the structure of regional economy to a model based on the ecosystem principle. The purpose of the study is to plan the spatial development of regions in the future periods of ecosystem forming. The solution of significant problems mentioned above in the context of ensuring the goal of spatial development determines the relevance of the research topic. The elements of the dialectics of interrelations and principles of development, the method of synthesis, deduction, the statistical method (when determining the quantitative aspect of processes and phenomena during the transition to a new quality), natural general economic laws (for the formation of the development of effective spatial regional policy in the future) are used. The analysis of the features of the transition of a person and his knowledge from the factual paradigm of knowledge accumulation to the methodological one is made. Innovation processes as the basis of economic development arranged according to the principle of an ecosystem are studied. A philosophical methodological approach of a new axiomatic spatial development of regions based on new ontologies (from one to different, from different to harmony, from harmony into a new whole) is suggested. This approach forms a collective image of an ecosystem. The conceptual foundations of the transfer of the regional economy to an ecosystem through the inversion of control through modeling (production processes, resource potential) are revealed. The principles of the ecosystem are formed as the highest form of the social and economic environment for the development of new production processes against the background of the development of the human mind. New approaches to the transition of production processes from competition to cooperation have been formed, transforming the management system from a subjective activity to an objective one.

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