New trends on yeast autolysis and wine ageing on lees: a bibliographic review

OENO One ◽  
2001 ◽  
Vol 35 (2) ◽  
pp. 57 ◽  
Author(s):  
Caroline Fornairon-Bonnefond ◽  
Carole Camarasa ◽  
Michel Moutounet ◽  
Jean-Michel Salmon

<p style="text-align: justify;">In enology, lees are mainly used in the traditional practice of « sur lies » wine ageing, which consists of carrying on the contact between wine and lees (yeasts and vegetal residues) during ageing. Lees come either from first or second fermentation, and could be used for white or red wines elaboration. Such an enological practice remains yet empirical. In the present paper, the state of art was investigated in order to collect and analyze most of the scientific works realized on wine lees. It includes also technological points relevant from such a practice.</p><p style="text-align: justify;">A clear definition of wine lees from legal and technological points of view was given in the first part of the present paper. A second part described the mechanisms of autolysis and focused more precisely on each class of identified autolysis products. Many scientific works had indeed revealed the yeast autolysis phenomenon occuring during such a way of wine ageing. All these works remained mainly based on identification of yeast macromolecules released in the wine during the autolysis phenomenon. However, the experimental methodologies followed by the different authors are variable, and most of the obtained results were difficult to extrapolate to actual wine ageing on lees. Only few works dealt with the physicochemical properties of such lees during autolysis, specially towards oxygen, polyphenols and other wine compounds. A compilation of recent data obtained on these peculiar topics was then given. In a third and last part, the effect of ageing wine on lees was approached from a technical point of view.</p>

OENO One ◽  
2002 ◽  
Vol 36 (2) ◽  
pp. 49 ◽  
Author(s):  
Caroline Fornairon-Bonnefond ◽  
Carole Camarasa ◽  
Michel Moutounet ◽  
Jean-Michel Salmon

<p style="text-align: justify;">In enology, «grands crus» white wines are traditionally aged by the «sur lies» method, which consists of keeping the aging wine in contact with the lees (yeasts and organic residues). The lees can come either from the first or second fermentation and can be used for both white and red wines. This practice is still in the experimental stage. We reviewed scientific studies carried out on wine lees to determine the current situation in enology. We also provide some technological information relevant to such a practice.</p><p style="text-align: justify;">The first part of this paper provides a clear definition of wine lees from a legal and technological point of view. The second part describes the mechanisms of autolysis and focuses on each class of autolysis product. Many scientific studies have discussed the phenomenon of yeast autolysis during wine ageing. Most of these studies simply identified the yeast macromolecules released into the wine during autolysis. However, the experimental methods used vary and it is difficult to extrapolate most of results to the process of wine ageing on lees. Only a few studies have dealt with the physicochemical properties of lees during autolysis, especially concerning oxygen, polyphenols and other wine compounds. We then summarize the recent data obtained on these topics. Finally, we discuss the technical effects of aging wine on lees.</p>


2020 ◽  
Vol 72 (2) ◽  
pp. 236-242
Author(s):  
K. Galiyeva ◽  
◽  
S. Isakova ◽  

The article is devoted to the definition of concept in modern linguistics. Various points of view and definitions of the basic concepts are considered: "concept", "conceptual sphere", "content". The aim of the article is to describe and explain such a complex unit as a concept from the point of view of linguistics. The object of research is studied in its various manifestations, the combination of verbal and nonverbal means of information expression in the conceptual sphere is revealed. the relevance of this topic is due to the need for a detailed consideration of the concept of concept based on the works of prominent scientists and linguists. Researchers treat the concept as a cognitive, psycholinguistic, linguocultural, cultural and linguistic phenomenon. The concept is an umbrella term because it "covers" the subject areas of several scientific fields: primarily cognitive psychology and cognitive linguistics.


Author(s):  
H. V. Sydor ◽  
O. I. Tkachik

                Purpose. Investigation of essence of deficit of the State Budget from the point of view of existing approaches in economic science.         Methodology of research. The theoretical and methodological basis of the research is the scientific works of domestic and foreign authors on the research of the essence of the deficit of the State Budget of Ukraine, Internet resources. In the process of research used general and special methods, in particular: monographic – in the implementation of the literary review of the problem under study; systemic and structural analysis – in substantiating different approaches and different points of view before interpreting the essence of the State Budget deficit as a complex economic category.        Findings. Generalized theoretical developments of domestic and foreign scientists-economists on the interpretation of the «deficit of the State Budget». At the theoretical level, it has been proved that over the entire period of functioning of Ukraine as an independent state there was an excess of the expenditure part of the State Budget over its revenue. Traced causal relationships, which are important reasons for the appearance of a deficit of the State Budget in Ukraine. The research of those scientists considering the definition of «deficit of the State Budget» from positive and negative sides is considered. It was established that it would assess the financing of the position of the state and the country affecting the budget and tax policy of the balance of payments, the state of the monetary system and the internal order, which allows to identify the deficit of the State Budget.        Originality. It is suggested to trace causal relationships, which are important reasons for the occurrence of the deficit of the State Budget in Ukraine.        Practical value. The obtained research results are the basis for solving practical problems of the correct scientific approach to understanding this concept at the present stage.


2021 ◽  
pp. 50-57
Author(s):  
Valeriia Polych

Problem setting. The problem of environmental security has gone beyond national borders and acquired a planetary character. If before the issue of ensuring the environmental security of countries was solely their internal affair, over time, state borders from an environmental point of view gradually lost their importance, became transparent. Analysis of recent researches and publications. The study of theoretical or some practical aspects of the legal nature of environmental safety were engaged in domestic and foreign scientists, among which are the works of: A.P. Hetman, H.V. Anisimova, G.I. Balyuk, S.A. Bogolyubova, M.M. Brinchuk, I.I. Karakash, T.G. Kovalchuk, V.V. Kostytsky and others. Target of research is to determine the essence and features of environmental safety as a legal category in terms of international law. Article’s main body. The article examines the definition of «environmental security» as a legal category. Its legal nature and its connection to international security are being established. In particular, environmental security as a legal category is considered from two points of view, as a certain state of protection of a person from threats caused by an thropogenic impact on natural objects, and as a system of legal instruments regulating the use of natural resources for their protection, as well as prevention and counteraction to threats that have a detrimental effect on the environment. Through the analysis of international legal acts, modern approaches of the international community to ensuring environmental security are determined. The international mechanism for environmental security is constantly evolving, it should be recognized that it is unfortunately not perfect and is not able to fully solve today's environmental problems, as well as to prevent an environmental catastrophe on a global scale. By concluding international agreements alone, it is impossible to ensure effective protection of all elements of the natural environment. Conclusions and prospects for the development. Therefore, it is important to consolidate the efforts of all participants in international communication in developing common approaches to solving this problem and actively using numerous international treaties and soft law instruments, best national practices, and involving civil society.


1932 ◽  
Vol 5 (3) ◽  
pp. 295-295
Author(s):  
G. Bruni

Abstract The problem of the minimum proportion of sulfur necessary to effect vulcanization is fundamental to an interpretation of the very nature of vulcanization itself. Since the introduction of ultra-accelerators, it has been recognized that very small quantities of sulfur are sufficient to bring about vulcanization. In experiments carried out in 1918 in collaboration with G. Menghi in the Laboratory of Chemical and Physical-Chemical Research of the Pirelli Company of Milan, the author found that by the aid of zinc dimethyldithiocarbamate or of similar substances there is an appreciable vulcanization with 0.2 per cent of sulfur. This fact was made public in patents applied for by the author the next year. On the other hand, it is generally recognized today that all vulcanization originates in a chemical reaction, though a fundamental difficulty lies in the fact that it has never been possible to give an exact definition of what is meant by vulcanization. When is a rubber considered vulcanized? From a technical point of view this question may be answered, but there has not been a satisfactory explanation up to this time.


2021 ◽  
Vol 5 (4) ◽  
pp. 67-75
Author(s):  
Nodirjon Bakhromalievich Otaqulov ◽  

Introduction. This article examines the use of subcolloquial mesurative phraseological units in the French, Uzbek and Russian languages from the point of view of reflecting in them the relationship between language and cultural semantics. Its purpose is to determine the similarities and differences between subcolloquial mesurative phraseological units, taking into account the main symbolic meanings of numbers in world culture. The article examines the subcolloquial mesurative units in French, Uzbek and Russian, their place in the linguistic picture of the world, as well as their use in proverbs, sayings and phraseological units. Various points of view of scientists-linguists are considered, in particular, that the category of time is a category of a wide heterogeonic plan and finds a peculiar reflection in the linguistic picture of the world. The questions of the use of the subcolloquial mesurative unit of time in lexical, phraseological units, as well as in proverbs and sayings in French, Uzbek and Russian are touched upon. The conclusions are supported by the factual linguistic material of the indicated languages. Materials and methods. The study used the methods of component and stylistic analysis within the framework of the linguistic picture of the world based on the system-structural paradigms. It is noted that subcolloquial mesurative phraseological units differ from other linguistic units in that they provide imagery, expressiveness and emotionality to speech. The main attention is paid to the definition of national and cultural features of phraseological units with subcolloquial mesurative components of the French, Uzbek and Russian languages, expressing different socio-cultural cultures of the world. Results and discussion. Scientific novelty lies in the study of determining the sources of phraseological units with subcolloquial mesurative components in the French, Uzbek and Russian languages on the basis of phraseological units. An analysis of the generality and specificity in the meanings of the subcolloquial mesuratic phraseological units of the compared languages was carried out. This analysis involves the study of the semantics of subcolloquial mesuratic phraseological units, the mechanisms of nomination and associative links existing in them, the consciousness and properties of the mentality of the three peoples


Author(s):  
Tomáš Hlavsa

Regions in the Czech Republic, the same as in most European countries, show in their rural areas a considerable difference rate from points of view demographic, social and economic as well as from point of view of infrastructure. The paper deals with a proposal of a suitable methodological approach of regions comparison in frame of rural development and agriculture indicators. This methodological approach is based on multivariate statistical analysis using composite indicators. Partial aim is to analyze disparities among regions at a level NUTS 4 in Královéhradecký region in light of agriculture and the situation in rural space. Identification and a subsequent analysis of these differences and a determination of a certain sequence of regions and their categorization can be beneficial for definition of trouble shooting regions and better support aiming. In the paper is also evaluated current regional policy applied in observed NUTS 4 in relation with disparity analysis results and categorization.


2011 ◽  
Vol 134 (4) ◽  
Author(s):  
Nicolas Binder ◽  
Sebastien Le Guyader ◽  
Xavier Carbonneau

The influence of variable geometry stators on the stage behavior is analyzed from both theoretical and experimental points of view. A theoretical analysis of the trajectory of some pressure-ratio lines in a loading-to-flow-coefficient diagram leads to the definition of a specific dimensionless parameter: the reduced section. This parameter is representative of the stator geometric configuration and is thus expected to be a good candidate to describe the variable geometry problem. From a theoretical point of view, this parameter is no less than the formal expression of the link between the geometric configuration of the stator and the behavior of the stage. An experimental approach decomposed in three phases is then led to evaluate this assessment. The results clearly demonstrate the crucial influence of the reduced section in the operating point definition. It leads to the conclusion that from a theoretical point of view, the two solutions mainly used in the industry for variable geometry stages (variation of the height or of the opening position of the stator blades) are equivalent provided that they are sanitized of their respective technological drawbacks. It has also been shown that the geometric configuration of the stator chosen to reach a specific value of the reduced section has some incidence on the efficiency of the stage. This observation gives some opportunities for optimization, for which some axis of reflection is given.


Author(s):  
Alina Gerasimova

Terrorist activity in all its manifestations is the main source of threat to the public security of the Russian Federation and the entire world community. Its organized nature poses increasingly complex challenges to society. Today, terrorism is becoming complex and highly organized in character. Organized terrorist activity has a high level of danger, provokes the phenomenon of social fear, in which a person feels his helpless in the face of the absolute of all-encompassing violence. The concepts «terrorist activity», «organized activity», and «organized criminal activity» are analysed in the paper. On the basis of these notions examination, the author offers his own definition of «organized terrorist activity». The article contains the analysis of the doctrinal understanding of «organized criminal activity» definition. The article describes the content aspects of the term «terrorist activity» where the features of this definition from the point of view of social sciences and of criminal law norms are taken into account. The author analyses the fixed definition of «terrorist activity» given in the Federal law «On countering terrorism» and the criminal law concept of «terrorist activity». Different approaches to understanding organized criminal activity from the points of view of criminal law and criminology are investigated. The correlation between the concepts «organizational criminal activity» and «organized criminal activity» is shown.


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