Scopul nostru este sprijinirea şi promovarea cercetării ştiinţifice şi facilitarea comunicării între cercetătorii români din întreaga lume.
Despite high similarity in sequence and catalytic properties, the l-lactate dehydrogenases (LDHs) in lactic acid bacteria (LAB) display differences in their regulation that may arise from their adaptation to different habitats. We combined experimental and computational approaches to investigate the effects of fructose 1,6-bisphosphate (FBP), phosphate (Pi), and ionic strength (NaCl concentration) on six LDHs from four LABs studied at pH 6 and pH
Read morePyruvate kinase (PYK) is a critical allosterically regulated enzyme that links glycolysis, the primary energy metabolism, to cellular metabolism. Lactic acid bacteria rely almost exclusively on glycolysis for their energy production under anaerobic conditions, which reinforces the key role of PYK in their metabolism. These organisms are closely related, but have adapted to a huge variety of native environments. They include food-fermenting organisms,
Read moreIn modern economies services are dominant. As the role of services is increasing, the difference between goods and services is vanishing, but most of our economics and business knowledge is developed from a manufacturing perspective which is no more satisfactory in the new service economy conditions. One important aspect is that the ability of a country to participate effectively to the growing international trade in services depends more and more
Read moreThis communication presents the results of an exploratory survey carried on in the first half of year 2009 among 180 executives representing a large diversity of Romanian enterprises, with regard to the importance of servic-es as intermediate inputs, the perspectives regarding the demand for ser-vices, the characteristics which significantly influence the differences be-tween enterprises with regard to their purchases of services. The main difficulties
Read moreThe main instruments that ensure the free movement of goods on the big European market are the European directives, harmonized standards, accreditation, conformity assessment, testing and metrology. The rendition or setting up of these instruments do not signify that the economic agents are immediately capable to use them in an optimal way. It is necessary to build a national infrastructure, aligned with the European and international practices,
Read moreAs part of a strategic approach to answer the raising concern about environment degradation and waste of resources, a number of initiatives were deployed, aiming to provide more effective incentives required to improve the ecological performance of production and consumption, including ISO 14000 standards, systems of environment impact assessment, regional and national systems of ecological labeling. In the European Union, eco-labeling and the European
Read moreHighly performing innovative business services became important factors of competitiveness in modern economies, but their potential contribution is severely restricted by market dysfunctions, as companies reported during previous studies. There is also a lack of adequate policies partly explained by the fact that the services related knowledge is underdeveloped and poorly disseminated among decision makers. Having found that quality uncertainty limit
Read moreIn the case of services there is no consensus about the way in which quality should be evaluated. The problem appears to be complex, especially for services the market of which is prejudiced by high information asymmetry. This is why business services – especially the knowledge intensive ones - tend to be expensive but of an uncertain value, distorting the market and compromising the competitiveness of their client industries. The authors make
Read moreWhile business services, and especially knowledge intensive ones, are key inputs, having a decisive contribution to the competitiveness of their client industries, the determinants of the market for such services are not entirely clarified. We found that quality uncertainty and information asymmetry generate incentives for poor quality and low performance, and drastically limit the market size and its growth prospects. Aiming at animating the efforts
Read moreThe conceptual analysis of the meaning, quality and productivity of ser-vices in the Romanian economy, the structural insight into the highly var-ied universe of these activities, identifying the distinctive level and struc-ture dynamics of the tertiary sector, defining and delineating Juglar cycles, ever more clearly outlined by the services index, are the main aims of this article. The methodological landmarks are fully statistical, the analysis
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