International Trade of Biofuels: Current Trends and the Potential Role of Africa

2011 ◽  
pp. 147-162 ◽  
Author(s):  
Arnaldo Walter ◽  
Anna Segerstedt
Keyword(s):  
International Trade ◽  
Potential Role ◽  
Current Trends

scholarly journals Current trends in leather science

2020 ◽  
Vol 2 (1) ◽  
Author(s):  
Anthony D. Covington ◽  
William R. Wise
Keyword(s):  
Ionic Liquids ◽  
Potential Role ◽  
Solid Medium ◽  
Leather Industry ◽  
Chromium Vi ◽  
Current Trends ◽  
New Findings ◽  
Vegetable Tanning ◽  
Sulfide Species

Abstract In preparing the second edition of ‘Tanning Chemistry. The Science of Leather.’, the literature was updated and the content was revised and reviewed. Here, the new findings are presented and discussed. Notable developments include the necessary rethinking of the mechanism of sulfide unhairing because of new understanding of the aqueous chemistry of sulfide species. Revision upwards of the value of the second pKa for sulfide species ionisation means that S2− cannot exist in an aqueous medium, so the unhairing species in hair burn reactions is HS−. Although the technology remains the same, this means the mechanisms of associated reactions such as immunisation must be revised. Rawstock preservation has benefitted from studies of the potential role of materials from plants which accumulate salt, but which also contribute terpene compounds. There is also further discussion on the continuing issue of chromium (VI) in the leather industry. The application to processing of new solvents, ionic liquids and deep eutectics, is the coming technology, which offers transforming options for new chemistries and products. Renewed interest in vegetable tanning and methods of wet white processing are current trends. Also, within the topic of reagent delivery is processing in a solid medium of plastic beads. Graphical abstract

scholarly journals INTERNATIONAL ELECTRONIC STOCK TRADING: MECHANISM OF FUNCTIONING AND CURRENT TRENDS

2019 ◽  
Vol 4 (20) ◽  
pp. 15-24
Author(s):  
Andriy Syshchuk ◽  
Viktoria Khirova
Keyword(s):  
International Trade ◽  
Point Of View ◽  
Theory And Practice ◽  
Stock Exchanges ◽  
Stock Trading ◽  
Trade Relations ◽  
Current Trends ◽  
Stock Indices ◽  
Trading Mechanism

Abstract. Modern international electronic stock trading is becoming increasingly important in the organization of the system of international trade relations. Several studies of the domestic and foreign scientists have highlighted various aspects of the place and role of electronic exchanges in trade relations between countries. At the same time, the peculiarities of the mechanism of functioning of the international e-commerce, which is constantly evolving and improving, need to be studied both from the point of view of theory and practice. Electronic exchanges have created and implemented their own mechanism of functioning, which turns them into the most organized form of international trade. It is substantiated that trends and key features of the development of electronic exchanges can be tracked and forecasted with the help of relevant stock indices. The main features and the most important aspects of the development of electronic exchanges are determined, based on the analysis of stock indices of the two largest electronic exchanges in the world, the geographical structure of electronic stock exchanges and the dynamics of the use of artificial intelligence in the exchange trading process. Here also highlighted the negative and positive interdependencies regarding the future development of international e-commerce.

scholarly journals Modern Trends of Customs Administrations Formation: Best European Practices and a Unified Structure

2020 ◽  
Vol 13 (1) ◽  
pp. 189-211
Author(s):  
Nestor Shpak ◽  
Olga Melnyk ◽  
Marta Adamiv ◽  
Włodzimierz Sroka
Keyword(s):  
International Trade ◽  
Developed Countries ◽  
Conceptual Approach ◽  
Support Functions ◽  
Current Trends ◽  
Service Information ◽  
Customs Administration ◽  
Resource Support ◽  
Quantitative Indicators

AbstractThe ambiguous trends in international trade in 2019 and the forecast for 2020 enhance the functional role of the customs bodies in every country. That is because the customs system largely determines the ease of conducting international trade, the security of international supply chains and economic development of the countries. Though many developed countries have been able to form progressive customs systems, there are still countries that are in the process of reforming customs administrations and require a unified conceptual approach to build their customs systems. Given this fact the goal of our study is to analyze current trends in the development of the international customs systems and on the basis of it to identify the main and support functions of customs administration. Based on the principle of the best practices, the countries with the best customs administrations according to WTO data, i.e. France, Germany, the Netherlands, Lithuania and Poland were selected for analysis. We analyzed the positions of these countries in the leading international rankings, the key quantitative indicators of their customs activity and the peculiarities of the organizational construction of the customs authorities by functional principle. As the result, based on the use of systematic, dynamic and topologically substantive approaches and results of research, we developed a unified conceptual structure of the customs administration. In particular, the main functions (i.e. control, security and fiscal) and support functions (i.e. regulatory, administration, communication, service, information and statistical subsystems, resource support subsystem and international cooperation) were proposed. The proposed structure is intended to be used by representatives of the customs authorities in different countries throughout the world.

POPDC proteins and cardiac function

2019 ◽  
Vol 47 (5) ◽  
pp. 1393-1404 ◽  
Author(s):  
Thomas Brand
Keyword(s):  
Potential Role ◽  
Striated Muscle ◽  
Short Review ◽  
Effector Proteins ◽  
Muscle Disease ◽  
Disease Genes ◽  
Protein Protein Interaction ◽  
Interaction Partners ◽  
And Function

Abstract The Popeye domain-containing gene family encodes a novel class of cAMP effector proteins in striated muscle tissue. In this short review, we first introduce the protein family and discuss their structure and function with an emphasis on their role in cyclic AMP signalling. Another focus of this review is the recently discovered role of POPDC genes as striated muscle disease genes, which have been associated with cardiac arrhythmia and muscular dystrophy. The pathological phenotypes observed in patients will be compared with phenotypes present in null and knockin mutations in zebrafish and mouse. A number of protein–protein interaction partners have been discovered and the potential role of POPDC proteins to control the subcellular localization and function of these interacting proteins will be discussed. Finally, we outline several areas, where research is urgently needed.

The Effect of Path Length and Display Size on Memory for Spatial Information

2012 ◽  
Vol 59 (3) ◽  
pp. 147-152 ◽  
Author(s):  
Katherine Guérard ◽  
Sébastien Tremblay
Keyword(s):  
Path Length ◽  
Potential Role ◽  
Spatial Information ◽  
Recall Performance ◽  
Minor Role ◽  
Length Effect ◽  
Serial Memory ◽  
Fixed Reference ◽  
A Minor

In serial memory for spatial information, some studies showed that recall performance suffers when the distance between successive locations increases relatively to the size of the display in which they are presented (the path length effect; e.g., Parmentier et al., 2005) but not when distance is increased by enlarging the size of the display (e.g., Smyth & Scholey, 1994). In the present study, we examined the effect of varying the absolute and relative distance between to-be-remembered items on memory for spatial information. We manipulated path length using small (15″) and large (64″) screens within the same design. In two experiments, we showed that distance was disruptive mainly when it is varied relatively to a fixed reference frame, though increasing the size of the display also had a small deleterious effect on recall. The insertion of a retention interval did not influence these effects, suggesting that rehearsal plays a minor role in mediating the effects of distance on serial spatial memory. We discuss the potential role of perceptual organization in light of the pattern of results.

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