scholarly journals Do the different species of fungi impact on mycocomposites compression behaviour?

2021 ◽  
Author(s):  
Nahura Pessanha Silva ◽  
Bárbara Ferreira de Oliveira ◽  
Glória Andreia Ferreira Hernández ◽  
Luana Pinto de Souza Tavares ◽  
Michel Picanço Oliveira ◽  
...  

Mycelium-based composites result from the growth of filamentous fungi on organic materials such as agricultural waste streams, like sugarcane bagasse, sawdust, coffee husks, coconut mesocarp and cotton. The morphology, density, tensile, flexural and compression strength of mycocomposites change according to the type of substrate, fungal species and processing technique. The objective of this study was to evaluate the mechanical behaviour in compression of different mycelium-based materials changing the fungal species. Substrates were formulated with wood sawdust and coconut endocarp, coffee grounds and wheat bran and incubated with isolates of the fungi Pycnoporus sanguineus, Ganoderma applanattum and Hexagonia hydnoides. Pre-myceliated sterile substrates were placed in cylindrical molds and incubated at 25°C for 7 days. After this period, the composites obtained were subjected to a temperature of 80 °C for 12 hours to stop fungi further development. Mechanical tests showed the relationship between the fungi and the compressive resistance (10% strain) of resulting composites, according to ASTM D1621. The analyzes indicated that the use of Pycnoporus sanguineus fungusprovides a composite with greater resistance to compression, which suggests the application of this mycocomposite in packaging, since the primary requirement of such use is to protect the content against damage.

Author(s):  
Svetlana Sergeevna Kozunova ◽  
Alla Grigorievna Kravets

The article highlights the aspects of risk management in the information system. According to the analysis of the work of Russian and foreign scientists and world practices in the field of risk management, it is stated that there is a need to improve the effectiveness of risk management of information system and to develop a method for managing the risks of the information system. As a solution to the problem of effective risk management of the information system, there has been proposed a formalized procedure for managing the risks of the information system. The scientific novelty of this solution is the use of decision space and optimization space to reduce risks. This procedure allows to assess the damage, risk and effectiveness of risk management of the information system. The risks of the information system are determined and analyzed; a pyramidal risk diagram is developed. This diagram allows you to describe the relationship of risks with the components of the information system. The negative consequences to which these risks can lead are given. The analysis of methods and approaches to risk management has been carried out. Based on the results of the analysis, the methods GRAMM, CORAS, GOST R ISO / IEC scored to the maximum. The weak points of these methods and the difficulty of applying these methods in practice are described. The developed formalized risk management procedure to control the risks of information system can be used as management system’s element of the information security quality that complies with the recommendations of GOST R ISO / IEC 27003-2012. The prospect of further development of the research results is the development of management systems of risk of information system.


2020 ◽  
Vol 16 (4) ◽  
pp. 465-488
Author(s):  
Thomas M.J. Möllers

AbstractThe Europeanisation of domestic law calls for a classical methodology to ‘update’ the established traditions of the law. The relationship between European directives and national law is difficult, since directives do apply, but European legal texts need to be implemented into national law. Whilst directives are not binding on private individuals, there is no direct third-party effect, but only an ‘indirect effect’. This effect is influenced by the stipulations of the ECJ, but is ultimately determined in accordance with methodical principles of national law. The ECJ uses a broad term of interpretation of the law. In contrast, in German and Austrian legal methodology the wording of a provision defines the dividing line between interpretation and further development of the law. The article reveals how legal scholars and the case-law have gradually shown in recent decades a greater willingness to shift from a narrow, traditional boundary of permissible development of the law to a modern line of case-law regarding the boundary of directive-compliant, permissible development of the law.


Author(s):  
Katalin Dózsa ◽  
Fruzsina Mezei ◽  
Tamás Tóth ◽  
Ábel Perjés ◽  
Péter Pollner

Abstract Background: Expectations towards general practitioners (GPs) are continuously increasing to provide a more systematic preventive- and definitive-based care, a wider range of multidisciplinary team-based services and to integrate state-of-the-art digital solutions into daily practice. Aided by development programmes, Hungarian primary care is facing the challenge to fulfil its role as the provider of comprehensive, high quality, patient-centred, preventive care, answering the challenges caused by non-communicable diseases (NCDs). Aim: The article aims to provide an insight into the utilization of simple, digital, medical devices. We show the relationship between the primary health care (PHC) practice models and the used types of devices. We point at further development directions of GP practices regarding the utilization of evidence-based medical technologies and how such devices support the screening and chronic care of patients with NCDs in everyday practice. Methods: Data were collected using an online self-assessment questionnaire from 1800 Hungarian GPs registered in Hungary. Descriptive statistics, Wilcoxon’s test and χ2 test were applied to analyze the ownership and utilization of 32 types of medical devices, characteristics of the GP practices and to highlight the differences between traditional and cluster-based operating model. Findings: Based on the responses from 27.7% of all Hungarian GPs, the medical device infrastructure was found to be limited especially in single GP-practices. Those involved in development projects of GP’s clusters in the last decade reported a wider range and significantly more intensive utilization of evidence-based technologies (average number of devices: 5.42 versus 7.56, P<.001), but even these GPs are not using some of their devices (e.g., various point of care testing devices) due to the lack of financing. In addition, GPs involved in GPs-cluster development model programmes showed significantly greater willingness for sharing relatively expensive, extra workforce-demanding technologies (χ2 = 24.5, P<.001).


2020 ◽  
Vol 70 (3) ◽  
pp. 370-377
Author(s):  
Cristian Grecca Turkot ◽  
Roy Daniel Seale ◽  
Edward D. Entsminger ◽  
Frederico José Nistal França ◽  
Rubin Shmulsky

Abstract The objective of this article is to evaluate the relationship between the dynamic modulus of elasticity (MOEd), which was obtained with acoustic-based nondestructive testing (NDT) methods, and static bending properties of two domestic hardwood oak species. The mechanical properties were conducted using static modulus of elasticity (MOE) and modulus of rupture (MOR) in radial and tangential directions. Mechanical tests were performed according to ASTM D143 on small clear, defect-free specimens from the two tree species: red oak (Quercus rubra) and white oak (Quercus alba). The MOEd was determined by two NDT methods and three longitudinal vibration methods based on the fast Fourier transform. The destructive strength values obtained in this study were within the expected range for these species. The MOE was best predicted by NDT methods for both species but also had a strong capability to predict MOR.


Author(s):  
Ella Sheludko ◽  
◽  
Mariia Zavgorodnia ◽  

The object of this study is the further development of eco-innovations for the rise of industry and the economy. Emphasis is placed on the growing relevance of "green" incentives in line with climate challenges, the economical use of natural resources, as well as the need for a systematic vision of environmental issues and the implementation of international requirements. The study is based on the work of foreign scientists, international rankings and world best practices for the introduction of modern economic mechanisms of state incentives for greening the economy, green modernization, the transition to a circular model of the economy. There is a difference in the implementation of environmental policy - some local projects in Ukraine and the European approach - with the assessment of eco-innovation, systemic change, the formation of ecosystems, scaling technological solutions. The main methods used in the study are: methods of system-structural analysis, analysis and synthesis, grouping - for preliminary analysis and selection of appropriate tools in the study of the implementation of eco-innovation in Ukraine and EU countries; index valuation method and method of comparative analysis - used in the analysis of public policy to stimulate the company to "green" growth; abstract-logical method - used to establish the relationship between the need to introduce new instruments of public policy in the environmental sphere with elements of large-scale reform in the context of climate modernization of industry and to form a systematic vision of major achievements in implementing international requirements for eco-modernization of industrial enterprises. The paper analyzes the forms of international assistance that can compensate for the lack of available financial resources for the purposes of green modernization of the economy in conditions of limited financial capabilities of the state, intensification of competition for European and international environmental investments. The obtained result - a set of possible tools to stimulate Ukrainian industry - allows more systematic implementation of "greening" of Ukrainian industry, and their implementation and combination in a specific mechanism will determine the success of an industrial socially-oriented economy.


2021 ◽  
Vol 9 (11) ◽  
pp. 2296
Author(s):  
Leandro Pio de Sousa ◽  
Oliveiro Guerreiro Filho ◽  
Jorge Maurício Costa Mondego

The study of microbes associated with the coffee tree has been gaining strength in recent years. In this work, we compared the leaf mycobiome of the traditional crop Coffea arabica with wild species Coffea racemosa and Coffea stenophylla using ITS sequencing for qualitative information and real-time PCR for quantitative information, seeking to relate the mycobiomes with the content of caffeine and chlorogenic acid in leaves. Dothideomycetes, Wallemiomycetes, and Tremellomycetes are the dominant classes of fungi. The core leaf mycobiome among the three Coffea species is formed by Hannaella, Cladosporium, Cryptococcus, Erythrobasidium, and Alternaria. A network analysis showed that Phoma, an important C. arabica pathogen, is negatively related to six fungal species present in C. racemosa and C. stenophylla and absent in C. arabica. Finally, C. arabica have more than 35 times the concentration of caffeine and 2.5 times the concentration of chlorogenic acid than C. stenophylla and C. racemosa. The relationship between caffeine/chlorogenic acid content, the leaf mycobiome, and genotype pathogen resistance is discussed.


2018 ◽  
Vol 1 (2(14)) ◽  
pp. 8-15
Author(s):  
Serhiy Mykolaiovych Shkarlet ◽  
Maksym Viktorovych Dubyna ◽  
Olena Serhiivna Zhuk

Urgency of the research. In order to develop the financial services market, reform in this area needs to be implemented and measures should be taken to increase the level of trust among the key players in such a market. Target setting. The realities of Ukrainian system of state regulation of the financial intermediaries’ activity testify that the introduction of new ideas, concepts or provisions in this area requires the construction of an effective mechanism for their implementation. It should be clearly defined in the theoretical and methodological plane with the justification of its constituents. Actual scientific research and issues analysis. The works in the field of functioning of the financial services market should include the papers of such scientists: Bobrov Ye. A., Bondarenko Ye. P., Vyshyvana B. M., Voytenko O. M., Kovalenko Yu. M., Rekunenko І. І., Smagin V. L., Unets-Khodakivska V. P., Yuriya S. I., Yashchuk V. V., Asmundson I., Herring R., Stijn C., Wyman О. Uninvestigated parts of general matters defining. Despite the developments in this area, the theoretical and methodological principles of justification of the mechanism of forming confidence in the financial services market are not developed. The research objective. The purpose of the work is to develop the provisions for the creation and implementation of a mechanism for the establishment of a trust institution in the financial services market. The statement of basic materials. The importance of developing and implementing a mechanism of trust building in the financial services market for the further development of such a market is determined. The main elements of such a mechanism, the relationship between them are described and their essence and role in the process of building such a market are determined. Within the mechanism, its purpose, principles, functions, security units, methods and tools are identified. It is indicated that the mechanism should act in order to obtain concrete results, the types of which are defined. Conclusions. The article substantiates the principles of developing and implementing the mechanism of formation of the trust institution in the financial services market.


2020 ◽  
Vol 44 (3) ◽  
pp. 172-181
Author(s):  
G. Baitasheva ◽  
◽  
А. Musina ◽  
A. Issayeva ◽  
Zh. Myrzabaeva ◽  
...  

On the basis of the updated educational program were discussed issues of application of design technologies, in biology lessons in the section «Cell Biology» on the method of spiral training. Communication between parents, teachers and students is provided for in project technology. The point is that interest in the topic will increase by asking questions to parents. I was asked to voice my question, share my ideas through group work. The analysis of the works of these scientists is carried out and some stages of application are noted. In order to increase the interest of students studying the subject of biology, the specifics of the use of technology in project training are determined. In the field of biology are defined stages of work aimed at further development and consolidation of data on the topic «Cell Biology». The role of the teacher was shown. Highlighted the relationship of parents with children and friendship, communication in the classroom.


Author(s):  
Francesca Sgobbi

After a brief survey of the international literature on skill-related issues that may either support or threaten the further development of ICT-based applications this article provides a picture of the state-of-the-art of the professional skills supplied by ICT specialists in 11 EU countries based on data from the OECD Survey of Adult Skills. The first part of the empirical analysis focuses on the skills profile of ICT personnel from EU countries and examines to what extent the higher skills displayed by ICT specialists depend on a different distribution of demographic characteristics and job characteristics compared to the rest of the workforce. The second part of the empirical analysis focuses on the relationship between skills and wages and tests whether employers recognize an occupation-specific wage premium to ICT specialists. The results of the proposed empirical analyses confirm the existence of significant differences between skill profiles and earnings determinants of ICT specialists compared to other workers.


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