bluuebunny/crossref_metadata_2025 huggingface dataset:
Role of Wood Flour on Physical and Mechanical Properties in Polymer Matrix Composites-A Critical Review
Authors: Ranakoti Lalit , Rakesh Pawan Kumar , Gangil Brijesh
Published: May 2021

Green and sustainable material is the utmost prerequisite for the advancement of a healthy society and fulfilling the necessary for the improvement in material science. Naturally obtaining wood flour has the competence to be reinforced as a filler substance in the polymer composite. The present article deals with the usage of wood flour as a filler in the polymer composite. The article comprises properties, characteristics, occurrence, the structure of wood, and the techniques implemented in the manufacturing of wood flour polymer composites. In addition, critical parameters and causes that can bring changes in the properties like tensile, flexural, impact and hardness of polymers are also discussed with the addition of wood flour alone and with nanoparticles. The advantages of using wood flour as a filler in the thermoset and thermoplastic polymers discussed, and its hybridization with various natural fibers was also discussed in the present study.
A Study of the Thermo-Mechanical Behavior of a Gas Turbine Blade in Composite Materials Reinforced with Mast
Authors: Khalid Faiza , Rabah Manaa , Salah Saad , Hacene Ameddah
Published: May 2021

The turbine blades are subjected to high operating temperatures and high centrifugal tensile stress due to rotational speeds. The maximum temperature at the inlet of the turbine is currently limited by the resistance of the materials used for the blades. The present paper is focused on the thermo-mechanical behavior of the blade in composite materials with reinforced mast under two different types of loading. The material studied in this work is a composite material, the selected matrix is a technical ceramic which is alumina (aluminum oxide Al2O3) and the reinforcement is carried out by short fibers of high modulus carbon to optimize a percentage of 40% carbon and 60% of ceramics. The simulation was performed numerically by Ansys (Workbench 16.0) software. The comparative analysis was conducted to determine displacements, strains and Von Mises stress of composite material and then compared to other materials such as Titanium Alloy, Stainless Steel Alloy, and Aluminum 2024 Alloy. The results were compared in order to select the material with the best performance in terms of rigidity under thermo-mechanical stresses. While comparing these materials, it is found that composite material is better suited for high temperature applications. On evaluating the graphs drawn for, strains and displacements, the blade in composite materials reinforced with mast is considered as optimum.
ACCOUNTING AND ANALYTICAL MECHANISM OF FORMATION OF THREE-DIMENSIONAL VALUE THE COMPANY
Authors: Kraievskyi V. , Skoryk M. , Savchenko А. , Polischuk S. , Skrypnyk S.
Published: May 2021

Abstract. The branch features of formation of system indicators of accounting and information management system by enterprise to build a rational system of production and sales, which should provide a constant increase in the efficiency of the specified business entity. The thematic structuring of indicators of the accounting and information management system is carried out by the activity of agricultural enterprise in terms of clearly demarcated characteristics of industry specifics. It was proposed a model for reconnaissance of the functional content of indicators of management information system, which is based on parametric correlation results of functioning mechanisms of the formation and organizing of exogenous and endogenous factors. Accordingly, new and improved management indicators have been developed and improved, primarily due to their objectification within the accounting and information system.
Our research is based on the system method, which considers in unity and development all elements which form the accounting and information system of management of enterprise. The following general scientific methods of scientific cognition were used in the research, namely: method of analysis (reconnaissance of the functional content of indicators of the management information system); synthesis (explication of the spatial indicators of the information system by levels of management of the enterprise); method of induction (improvement of methodology of formation of indicators of information system of management of enterprise in the context of ensuring its sustainable development in the long run); and empirical method  and graphic method.
The methodology of formation of indicators of the information system of management of the enterprise in the context of maintenance of its sustainable development for the long term is improved. It is proved that the role of the information system is in service transactionality.
Using a praxeological approach axiological imperative generalizations made about the mentioned «information overflow» performance indicators through a system of information was justified.
The main results of the study can be used for information systems for the management of enterprise, designed for quantitative and qualitative characteristics of retrospective static parameters and perspective dynamic forecasts used in making qualitative decisions.
Keywords: indicators, accounting and information system, capital, company resources, environmental and social resources.
JEL Сlassification М41, М11, Q12, С53
Formulas: 0; fig.: 3; tabl.: 5; bibl.: 8.
PROMOÇÃO DA AUTONOMIA FEMININA DURANTE O PROCESSO PARTURITIVO: INTENCIONALIDADE DAS AÇÕES DE PROFISSIONAIS DA SAÚDE
Authors: Reis Thamiza Laureany da Rosa dos , Honnef Fernanda , Padoin Stela Maris De Mello , Alves Valdecyr Herdy , Souza Ivis Emília De Oliveira
Published: May 2021

Objetivo: compreender a intencionalidade das ações dos profissionais de saúde para promoção da autonomia feminina durante a assistência ao parto e nascimento. Método: pesquisa qualitativa fundamentada na fenomenologia social de Alfred Schütz, realizada com 17 profissionais, em hospital universitário no Sul do Brasil. A análise compreensiva foi guiada pelo referencial teórico-metodológico. Resultados: a intencionalidade do agir profissional foram: garantir o melhor para a mulher, o recém-nascido, o profissional e o serviço de saúde durante o processo de parto e nascimento; e ter expectativa de mudanças na atuação profissional em direção a um novo paradigma. Conclusão: os profissionais de saúde agem com a finalidade de alcançar um desfecho favorável a todos os envolvidos e reconhecem a necessidade de mudanças institucionais e dos profissionais para a qualificação da assistência obstétrica, para que se promova a autonomia da mulher nesse cenário.

Descritores: Saúde da Mulher. Parto. Autonomia Pessoal. Pesquisa Qualitativa. Pessoal de Saúd
Estação de atendimento para "asterias asteróides" usando um kit Arduino
Authors: Valle Ana Patricia Borjas , García Nuria Rubenia Funes , Pavón Susy Rocío García
Published: May 2021

En esta propuesta se han descrito los conocimientos básicos para entender ¿Qué es? Y ¿Cómo funciona? Una estación de cuidados utilizando el hardware libre de arduino, implementando tecnología que permita innovar y diseñar un modelo que genere un ambiente adecuado para la germinación y crecimiento dentro de un pequeño invernadero destinado a “asthophytum asterias” brindando el control automatizado de cultivos para estas plantas cactáceas y de esta forma poder contribuir a la preservación de su especie. Este sistema contendrá sensores de humedad y temperatura que se comunicarán a una placa micro-controladora “Arduino UNO” donde los datos obtenidos por los sensores son manipulados por el sistema operativo de tiempo real “FreeRTOS”, este determina la actividad que deben realizar los elementos actuadores (sistema de riego, iluminación y ventilación). En este apartado vamos a describir los principales elementos que componen un kit arduino y el entorno de desarrollo en el que se programa el código, es decir, la parte hardware y software que actúan sobre arduino. Se dará la información necesaria para entender el proceso de creación de un invernadero, la cual ha sido reforzada con imágenes para conocer de forma visual cada uno de los elementos que conforman el debido funcionamiento de este invernadero.
Causa of Contracts and General Assemblies Resolutions in Polish Cooperative Law
Authors: Bierecki Dominik
Published: May 2021

The article aims to present the manifestations of the requirement of causa of increment under Polish cooperative law. This requirement is one of the fundamental principles of Polish private law. According to this principle, party’s increments (acquisition of goods or rights) has to have a valid causa (purpose). Otherwise the party is obligated to return the increment. Because cooperatives are legal persons regulated by private law this requirement fully applies to their legal actions, including cooperative transactions. The requirement of causa also applies to increments provided by the members to the cooperative. Therefore, the requirement of causa is the fundament of cooperative’s capital and members’ economic participation depends on complying with it.
Received: 14 December 2020Accepted: 06 April 2021
Introduction
Authors: Bay Rasmussen Steffen
Published: May 2021

The process of European integration has evolved through crises of governance towards ever greater integration of the societies of the participating member states, giving rise to new questions about the political organization of the European continent. At the same time, European societies have become ever more diverse, giving rise to new and complex problematiques of coexistence. Europe must now also deal with the consequences of an economic model based on the consumption of finite resources. Beyond specific crises and events, Europe is therefore faced with a multifaceted challenge of ecological, democratic and societal sustainability. To approach the challenges from the point of view of sustainability means to see the ecological, democratic and societal long-term viability of Europe as made possible by the continuous reconstruction of European societies through innovative cultural, social, economic and political practices under the ecological constraints posed by the limits of our planet.
El método hermenéutico de Hans-Georg Gadamer
Authors: Gama Luis Eduardo
Published: May 2021

Se asume con frecuencia que la filosofía hermenéutica de Hans-Georg Gadamer está construida sobre la base de una poderosa crítica al método de las ciencias naturales que al apropiarse del monopolio de lo que sería un verdadero conocimiento cerraría las puertas a otras formas no científicas de experiencias de la verdad. Este artículo se propone, en una primera parte, examinar este supuesto a partir de un análisis de la dialéctica hermenéutica y la ontología del lenguaje que Gadamer plantea en la tercera parte de su obra capital Verdad y método. El resultado de este análisis mostrará que la crítica gadameriana al metodologismo científico se elabora, en último término, sobre el trasfondo de una concepción del ser en tanto acontecer de sentido, y del ser humano como individuo cuya comprensión de mundo es interpelada y movida desde este acontecer. Estos planteamientos ontológicos sirven para perfilar los rasgos generales de lo que sería para este autor un verdadero método del pensar y de su acceso a la verdad. Con estos resultados, el artículo se propone, en su segunda parte, identificar tres principios metodológicos elementales que determinarían el ejercicio de un genuino pensar hermenéutico: a) el principio de determinación del topos de la comprensión, que exige poner de manifiesto las relaciones de sentido que nos vinculan con lo que queremos comprender; b) el principio de corrección que permite que toda comprensión “mejore” permanentemente tanto nuestra interpretación de las cosas como la auto-descripción que los actores hacen de sus propios actos, y c) el principio de la sensibilidad para el acontecer que demanda una escucha atenta de todas las posibles relaciones de sentido que configuran los fenómenos, así como de las constantes variaciones y mutaciones de sentido que ellos experimentan.
Noches Lúgubres, de José Cadalso: la posibilidad de la noche para develar al otro
Authors: Osorio Herrera Bayron León , Getial Chalacan Luis Bayardo
Published: May 2021

Este artículo tiene como intención reflexionar, a partir de la obra de José Cadalso, Noches lúgubres, sobre las posibilidades del reconocimiento del otro como condición fundamental para un proceso efectivo de alteridad. La figura del protagonista, Tediato, sumido en la más densa oscuridad, permite el reconocimiento de una condición existencial al límite que necesita la presencia del otro para poder develar otra opción de sentido. Una dinámica de reencuentro consigo mismo es la condición para la apertura al rostro del otro que se me presenta como una nueva posibilidad existencial, porque el sentido vital de la existencia depende, en gran medida, de la relación que se construye con los otros. De ahí la importancia capital de comprender que el ser humano se hace humano en la medida en que tiene la capacidad de salir de sí mismo para donarse sin reciprocidad.
Publicidad como lugar de la memoria: piezas promocionales de cerveza y memoria colectiva
Authors: Giraldo Vásquez Maria Isabel , Macena Fabiana Francisca
Published: May 2021

Aunque la publicidad es un mecanismo de comunicación masivo y global, en lo que respecta a la regional y de productos propios, abre posibilidades para investigar construcciones de las perspectivas del pasado de comunidades determinadas. Este artículo se propone pensar la publicidad como evidencia de memoria colectiva y la inclusión de esta dentro de los “lugares de la memoria” a partir las ideas presentadas por Pierre Nora y Jacques Le Goff a través del análisis de una colección publicitaria elaborada por el pintor antioqueño Humberto Chaves para la cerveza Pilsen, publicada en El Colombiano (Medellín, Colombia) durante la década de 1940. Dicha inclusión es posible al pensar la publicidad como entidad significativa de carácter material, que se convierte en elemento del patrimonio de una comunidad que revela costumbres, formas de ser/actuar, de entender la realidad y la cotidianidad. El propósito del artículo se alcanza inicialmente a través de una exploración al contexto geográfico, publicitario y teórico-conceptual, posteriormente se identifican y seleccionan las piezas publicitarias a trabajar a través de una recopilación en fuente primaria (El Colombiano), y finalmente, mediante un ejercicio analítico de las imágenes escogidas, es posible vislumbrar y concluir las posibilidades de los lenguajes tanto gráficos como textuales, así como el discurso de la publicidad y el diseño gráfico como elementos sociales y culturales, políticos y económicos que evidencian una identidad, un ethos cultural y una memoria colectiva regional.
Establishing an Annual Account for Performers of Independent Activity
Authors: Joldeska Irina , Mecheski Stevcho
Published: May 2021

The preparation of the Annual account is mandatory for all economic entities in the Republic of North Macedonia. Depending on the type of categorized economic entity, special forms are prepared prescribed by law, in order to summarize them in the Annual account. Performers of independent activity are economic entities that include an individual person – entrepreneur, sole proprietorship an individual person who is engaged in performing agricultural, craft activity, as well as a person who performs a service or free occupation. Accordingly, at the end of the year, it is necessary to prepare an Annual account which contains the Income and Expenses Balance, the Annual Tax Balance for determining the income tax from performing an independent activity and the Income Structure by activities. The main purpose of the paper is to reflect the legislation of a certain part of companies registered in accordance with the law in The Republic of North Macedonia for external reporting and tax purposes. Hence, as a conclusion, the practical preparation of the three forms, implemented in the Annual Account of a sole proprietorship can be seen.
Household Savings in The Republic of North Macedonia - Seven Years Later
Authors: Nikolovska Vrateovska Dance , Nikoloska Keti , Mojsoska Snezhana
Published: May 2021

It has been scientifically proven that the process of financial market development involves strengthening of the financial system preceded by simple capital accumulation which in turn is closely related to the savings rate. The higher the level of financial development, the greater the financial intermediation and the economic growth. Financial development reduces inequality and poverty by super-proportionately accelerating the growth of emerging countries and implying a reduction of inequality in the world. This paper expands the time frame of the analysis in the research conducted in 2012 of a statistical sample of 1250 respondents. Based on new data seven years later and using the previously defined variables on the same size of the statistical sample, this study aims not only to confirm the basic thesis that in the Republic of North Macedonia savings (as the main source of financing domestic banks) are still at a low level, and that the examined variables which are directly proportional to savings generally have a downward trend but it also aims to emphasize the strong impact on (mis)trust in financial institutions, related to savings. Hence, this paper will note proposed measures to increase the level of savings.
An Evaluation on the Threats Cause by COVID-19 on Foods and Food&Beverage Industry
Authors: Sariişik Mehmet , İnanç Kapucuoğlu Mustafa
Published: May 2021

The purpose of this study is to evaluate the relationship between Covid-19 and the food in the light of all information that has been obtained till now. In the light of information being obtained and other outbreaks being experienced, it has been stated that there was no risk of transmission of this virus through the food and farm animals but that there could be a risk of transmission from workers, surfaces, a through the food production equipment. As a result of the literature review, it has been understood that the virus that causes Covid-19 disease does not transmit through food but on surfaces in particular groups in order to survive within certain time limits. These evaluations have caused all attention to be directed to humans (workers) and the areas relating with production. Within context of information that has been obtained till today, the most important proposals are focused on people working areas. This situation prepares the ground for focusing the measures to be taken on these two groups. In addition, wild animal production has been announced to be one of the fundamental actors concerning the risk of transmission.
Market Entries of Emnes in Developed Markets – A Case Study from Slovenia and Germany
Authors: M. Hilger Andreas , Steger Thomas , Nedelko Zlatko
Published: May 2021

To get an insight into internalization processes of Slovenian MNEs and particularly to their activities in Germany, we adopted a distinctively qualitative approach and conducted semi-structured interviews with key actors of five major Slovene companies we used as case studies. Our study shows that several major assumptions regarding frontier and emerging market MNE international activities do not fit to Slovene companies. They were found to act as innovation leaders with high quality products and services, as well as with competitive pricing, as long as their technological capabilities are competitive. The liability of foreignness as well as the liability of country of origin are steeply declining with increasing technological capabilities in Slovene EMNEs. They also showed high institutional familiarity and suffered little from uncertainty. Our study also shows that Slovene companies partially show competitive advantages compared to their German counterparts. Moreover, our findings confirm that economic liberalization, in this case Slovenia’s entry into the European common market, is a significant force driving company growth and internationalization. Thereby, this study presents generalizable insights into the internationalization process from Central and Eastern Europe and anywhere where large multinationals are scarce yet.
Secondary Use of Raw Materials in Food Sector Enterprises in Poland
Authors: Zdyb Anna
Published: May 2021

Circular economy (CE) nowadays has a significant impact on economic development. Reusing by-products is one of the key components of the CE paradigm, particularly important in industries using biological raw materials for production. This subject is widely discussed in many publications in the field of economics, while the practical use is scarcely described. The aim of the study was to verify whether companies operating on the Polish food industry market are re-using by-products for further production, what are the benefits of such an approach and whether if it’s time for a new way of managing by-products. Computer-assisted telephone interviews were conducted to verify opinions about the cost-effectiveness and competitiveness of enterprises in terms of reusing by-products and closing loop in production. The study covered 100 food industry companies. The most important conclusions are: (1) 92% of companies reuse by-products, (2) CE principles contribute to the improvement of competitiveness and cost-effectiveness, (3) 21% of companies are planning investments that will enable "closing the loop". There are processes in the analyzed sector that indicates increasing interest in implementing the principles of the CE by production companies.
Wewnątrzorganizacyjne uwarunkowania zaufania w przedsiębiorstwie w świetle badań nad pozytywnym potencjałem organizacji
Authors: Józefowicz Barbara
Published: May 2021

The desired state of trust in company is a strong and common belief of the credibility and mutual benevolence among employees and management. In effect, attitudes, decisions and behaviors are accepted. The aim of the paper is to identify antecedents of trust in company and assess how strong each of 89 identified antecedents influences on trust us the key areas of Positive Organizational Potential. The comparative analyses is based on the empirical research findings of two methods: questionnaire survey conducted in companies operating in Poland and a Delphi panel. Analyses shows slight discrepancies between the experts opinions and the companies survey results. Generally, groups of intra-organizational antecedents related to leadership and communication are the strongest impact on trust. However, in each category managers can find important particular determinants which indicate the ways to building trust in company.
BIOCHEMICAL EVALUATION AND SCIENTIFIC VALIDATION STUDIES OF AN HERBAL NUTRACEUTICAL (IN PRESS)
Authors: Manikandaselvi S. , Sudha A. , Vadivel V. , David Raj C. , Prabu C. , Brindha P.
Published: May 2021

The search for pioneering nutraceuticals from plants is genuine and crucial. Based on the literature review as per Ayurvedic texts, four common plants Capparis spinosa L. (flower buds), Caesalpinia bonducella  L.(seeds),  Luffa acutangula L.(fruits) and Cassia occidentalis L. (aerial parts) were selected to develop nutraceuticals and were standardized. Based on the nutraceutical and pharmacological efficacies of the individual plant drugs selected, three different herbal nutraceutical formulations were prepared. Nutraceuticals before and after lyophilization were subjected to standardization studies. Nutraceutical formulation 3 developed was found to be best due to its high nutraceutical values when compared to others. Results depicted that up to the dose level of 2000 mg/kg.bw (acute oral toxicity), 1000 mg/kg.bw (sub-acute oral toxicity), it doesn’t produced any lethality in the experimental animals. To conclude that the selected herbal formulation developed from selected plant ingredients was found to possess distinct nutraceutical values. The present work contributes for the development of human healthcare through nutraceutical product with remarkable medicinal properties in herbal way.
Impact of front line demonstration on yield and economics of onion
Authors: Choudhary Mahesh , Dular R.K. , Kumari Anop , Asiwal B.L.
Published: May 2021

Onion (Allium cepa L.) is one of the most important bulb crops in India, which plays a major role in supplementing the income of small and marginal farmers of Sikar District in Rajasthan. In the district one of the major constraints in onion cultivation is poor keeping quality of local variety. Most of the farmers in the district are still using the locally self produced seeds of unknown source. The cultivation of recommended /released varieties is very limited. To replace this anomaly Krishi Vigyan Kendra, Fatehpur-Shekhawati, Sikar has introduced improved variety of onion through front line demonstration in selected villages of Sikar district with the objective of getting higher production with good storage potentials under real farm situation. The result showed that maximum TSS (13.1%) and average keeping quality (5-6 months) was recorded in demonstration variety whereas, it was very less in farmers practices. On an average the bulb yield achieved by adopting improved production technology was 347.62q/ha, whereas, the corresponding yield ranges under farmers practices was to 343.20q/ha. The economics of data indicated that an average of Rs. 160834/ha was recorded net profit under recommended practices, while it was Rs 62030/ha under farmer practices. Cost benefit ratio was 2.34 under demonstration, while it was 1.90 under farmer practices. The study suggests that front line demonstration is one of the key extension tools for transfer of technology at grass root level that directly impact the horizontal spread of technology. This can be also a good option for enhancing farmers’ income.
Effect of Dietary Enrichment with Omega 3 and 6 Fatty Acids on Blood Metabolites, Hormone Concentration and Ovarian Function in Sahiwal Heifers
Authors: Kumar Sushil , Sihag Sajjan , Sihag Zile Singh , Patil Chandershekhar Santosh , Dhaka Surender Singh , Pandey Anand Kumar
Published: May 2021

Background: Supplementation of fat, especially those having unsaturated fatty acids has been proposed to carry positive effects on the reproductive organ, beside providing dietary energy to the animals. This experiment was designed to examine the effects of dietary ω-3 or ω-6 fatty acid (FA) rich oil supplementation on blood FA, metabolite and hormone concentrations; ovarian follicular growth and corpus luteum (CL) size in Sahiwal breed heifers. Methods: Eighteen heifers of 18.33±1.14 months of age and 194±4.16 kg of mean body weight were randomly assigned to 3 diets and individually fed as per ICAR (2013) diets. The diets include chopped wheat straw, green fodder and concentrate mixture containing either (i) no added PUFA rich oil but palm oil @ 3.5% (PO; n=6); (ii) 3.5% added soybean oil as ω-6 FA source (SO; n=6); or (iii) 3.5% added linseed oil as ω-3 FA source (LO; n=6). Result: SO increased (P less than 0.05) the plasma concentration of ω-6 FA while LO increased (P less than 0.05) the plasma ω-3 FA. Plasma glucose, triglyceride and non-esterified fatty acid (NEFA) concentrations was not affected due to different diets. Plasma total cholesterol and HDL-cholesterol were significantly higher (P less than 0.05) in SO and LO in comparison to PO. However, LDL-cholesterol was at par among all the treatments. Growth Hormone (GH) was not influenced due to different types of oil in heifers’ concentrate mixture. Insulin concentration increased (P less than 0.05) in LO compared to others. IGF-1 was statistically higher (P less than 0.05) in SO and LO as compared to CON, which among themselves also varied significantly. Plasma progesterone concentration at day 12 post estrous was higher (P less than 0.05) in LO. PUFA rich oil supplementation in the concentrate mixture of heifers (SO and LO) increased (P less than 0.05) the size of the ovulatory follicles as well as size of CL. It was inferred that feeding PUFA rich oil to pre-pubertal Sahiwal heifer’s results in advantageous changes in the blood metabolites, plasma hormones and ovarian functions.
Silencing/Voicing Transgender People at Work: An Organizational Perspective
Authors: Bizjak Davide
Published: May 2021

Narratives are a means of voicing in organizations. What it follows is a short reflection concerning the challenge taken by narratives of being the lens through which hearing voice from transgender people in organizations. This paper is aimed to scrutinize in what extent the role of transgender people narratives aids inclusion in organizations, through an organizational account of the underlying meanings in writing organizational stories. The reflection is mainly based on two concepts: the first one is silence, as a way to hide themselves in the workplace, and the second one is identity, as an apparatus of comparison between individual and organizational subjectivity. In this reflection, transgender people played the role of being a source of knowledge, triggering a debate concerning voice and silence in organizations.
Call for papers: Self Narratives in Organizations
Authors: Balirano Giuseppe , Sicca Luigi Maria , Valerio Paolo
Published: May 2021

Transgender and gender non-conforming (TGNC) individuals are often on the receiving end of discrimination and unfair treatment in the workplace, which can even escalate to violence or complete rejection. Davis (2009), for instance, has highlighted how many TGNC workers feel that their workplace is unsafe or inhospitable. Notwithstanding these difficulties, TGNC people are able to tap into significant personal and collective resources in order to protect themselves from the negative effects of discrimination (Law et al., 2011).In order to better understand the personal and work-related processes linked with being in the workplace as a TGNC individual, it is important to give voice directly to those who live and experience this reality. This is why puntOorg International Journal is collecting self narratives from TGNC individuals who want to tell their stories working in organizations or businesses as transgender or gender non-conforming people, including (but not limited to) issues around transitioning and discrimination.Self narratives will be collected in various countries and will be translated into English, if needs be. This collection of stories will be shared both online and through an international conference to be held in May 2018. Being aware of the sensitivities and confidentiality around self narratives, we are happy to publish stories under pseudonyms or as anonymous narratives. All contributions, which can be written in a very conversational and personal style but should not exceed 5000 words, must be sent to the editors via email at pij@puntoorg.net Please see our deadlines below: Title only to be sent by 30th November 2017 with confirmation of participation; Full narrative to be sent by 15th January 2017
https://www.puntoorginternationaljournal.org/index.php/PIJ/article/view/90
Authors: Giudici Giancarlo , Giuffrida Daniele , Boletta Francesco
Published: May 2021

Equity crowdfunding platforms allow small ventures to raise money and find new investors among retail individuals. In this work we aim at analysing the relationship between the number of equity investors registered in the crowdfunding round and the follow-up growth of revenues reported by investee firms. We find support for the ‘curse of the crowd’ hypothesis, according to which a larger number of investors registered at the end of the equity crowdfunding campaign is associated to lower growth in the revenues, in the short run. We posit that this effect is attributable to coordination costs, possible conflicts and low incentive for investors to spend efforts in value-adding activities.
Three Spirostanol Glycosides from the Seeds of Hyoscyamus Niger L.
Authors: Lunga Irina , Kintia Pavel , Shvets Stepan , Bassarelo Carla , Pizza Cosimo , Piacente Sonia
Published: May 2021

Three steroidal glycosides of spirostane series have been isolated from the seeds of Hyoscyamus niger L.(Solanaceae). Their structures were determined on the basis of chemical evidence and extensive spectroscopic methods including one-dimensional, two-dimensional NMR and MS analysis. In the genus Hyoscyamus the given compounds have been found out for the first time.
What Can Be Done with the Acetyl Group of Aryl-1-Ethanones?
Authors: Macaev Fliur
Published: May 2021

Literature data on utilization of acetyl group of aryl-1-ethanones (acetophenones) for the synthesis of organic compounds is generalized. Different approaches of preparation of aromatic compounds by chemical transformations of methyl as well as keto- group of titled compounds are systematized. Examples of the synthesis of organic compounds based on products of primary transformations of aryl-1-ethanones are considered.
The Role of Activated Carbon in Solving Ecological Problems
Authors: Mukhin V. M. , Lupascu T. G.
Published: May 2021

The authors present a brief analysis of the current global situation concerning the utilization of activated carbon in various fields. The article presents data concerning the synthesis and adsorption and structure properties of new activated carbons, used for solving ecological problems. The authors investigated the newly obtained activated carbons in comparison with several AC marks known in the world. It has been shown that currently synthesized AC are competitive with foreign marks.
The Influence of Binding Material on Porous Structure of Shaped Hopcalite
Authors: Kulikov N.K. , Kireev S.G. , Shevchenko A.O. , Mukhin V.M. , Tkachenko S.N. , Lupascu T.G.
Published: May 2021

The authors have investigated the equilibrated adsorption of water vapors on GFG hopcalite, which was obtained using the extrusion shaping method, with bentonite clay as the binding compound. In the frames of the BET model, the values of the monolayer capacity and the size of medium area occupied by the water molecule in the filled monolayer have been determined. The distribution of pores according to their sizes has been evaluated. It has been established that the modification of the bentonitic clay allows directed construction of the hopcalite porous structure,i.e. the formation of the mesoporous structure with a narrow distribution of the pores capacities by sizes, which was achieved varying the sizes of binding compound particles.
Vibronic Origin of the “SKEWED” Anticline Configuration of the Hydrogen Peroxide Molecule
Authors: Gorinchoy N. N. , Ogurtsov I. Ya. , Arsene Ion
Published: May 2021

The vibronic origin of instability of the symmetrical forms (D¥ h, C2h and C2v) of the hydrogen peroxide molecule H2O2 was revealed using ab initio calculations of the electronic structure and the adiabatic potential energy curves. The vibronic constants in this approach were estimated by fitting of the ab initio calculated adiabatic potential in the vicinity of the high-symmetry nuclear configurations to its analytical expression. It was shown that the equilibrium “skewed” anticline shape of the C2 symmetry can be realized in two ways: D¥h ® C2v® C2 or D¥h ® C2h® C2 with the decreasing of the adiabatic potential energy at every step.
The Study of Redox Conditions in the Dniester River
Authors: Gladchi Viorica , Goreaceva Nelli , Duca Gheorghe , Bunduchi Elena , Romanciuc Lidia , Mardari Igor , Borodaev Ruslan
Published: May 2021

The work presented in the paper discusses the contribution of the Novodnestrovsc water system to the formation of redox conditions in the lower Dniester. The conclusions were drawn on the basis of a long-term protocol of analyses that included the analysis of the oxygen regime, evaluation of the content of hydrogen peroxide, rH2, biological oxygen demand as well as other additional parameters.
Synthesis, Characterization and Crystal Structure of Bis-(2-Hydroxybenzaldehyde)Diaminoguanizone
Authors: Dragancea Diana , Arion Vladimir B. , Shova Sergiu
Published: May 2021

The new ligand, bis(2-hydroxybenzaldehyde)diaminoguanizone (1) has been synthesized and characterized by elemental analysis, IR and 1H NMR spectroscopies. The crystal structure of the compound was determined by X-ray diffraction. The ligand C15H15N5O2·C2H5OH crystallizes in the monoclinic space group P21/c with unit cell parameters a = 8.9102(3), b = 10.0357(3), c = 19.7618(6) Å, β = 98.385(2)°, Z = 4, V = 1748.21(9) Å3, R1 = 0.040. The amino form of the ligand adopts a planar conformation stabilized by two intramolecular hydrogen bonds of the type O–H···N, in which the H atoms of the central amino group are directed to the lone-pair regions of the azomethine nitrogen atoms.
Application of Chemical Methods to the Solid Waste Management
Authors: Bulimaga C. P.
Published: May 2021

The present article is a synthesis analysis of application of chemical methods for the development of technologies of hazardous waste management. Here are offered some technologies of neutralization of the waste containing hexacyanofferates, galvanic wastes and those with contain of vanadium, which are collected at Power Thermoelectric Plants.
Catalytic Property of Double Layered Perovskites A2MM’O6 for Radiolytical Split of Water
Authors: Cecal Alexandru , Lupascu Tudor , Hauta Oana Roxana , Gorodea Ioana , Palamaru Mircea , Iordan Alexandra Raluca , Macovei Ada
Published: May 2021

This paper deals with a study of water splitting by gamma rays in the presence of some double perovskites A2MM’O6 and also Sr2Fe1-xTa1+xO6. The irradiation is performed using 60Co as a source with 3·104 Ci activity and 8.3 kGy/h dose rate, which simulated the radioactive wastes, resulted from reprocessing of spent nuclear fuel elements much more active: 108-109 Ci. The stable products of radiolysis, as well as the other chemical species are measured by mass spectrometry. The calculated radiation yield (GH2) generally decreases in the order: Sr2Fe1-xTa1+xO6 (x=0.5; 0.4; 0.3; 0.1) > Ca2AlTaO6 > Sr2AlTaO6 > Ba2AlTaO6, under the given experimental conditions; the yield was higher in the presence of these catalysts than in their absence.
Detoxification of Pesticides Polluted Soil by Adsorbtion on Activated Carbons
Authors: Mukhin V. M. , Spiridonov Yu. Ya. , Lupascu T. G.
Published: May 2021

The paper emphasizes a very severe social-ecological problem, related to the contamination of soils by pesticides and fodder micotoxins. The authors suggest the utilization of a carbon adsorption based method of purification of soils contaminated with traces of pesticides. It is demonstrated that this method of soil rehabilitation leads to an 80% crop increase, allowing the production of environmentally clean plant products. The utilization of special activated carbons “Ptitsesorb” leads to a 30-40% decrease of necessary combined fodder in chickens breeding.
Advances in Organic, Bioorganic and Natural Products Chemistry in the Institute of Chemistry of the Academy of Sciences of Moldova
Authors: Vlad Pavel F. , Macaev Fliur Z.
Published: May 2021

This overview deals with the advances in the investigation in the fi eld of organic, bioorganic and naturalproducts chemistry as well as the biologically active compounds in the Institute of Chemistry of the Academy of Sciences of Moldova.
Coordination Chemistry in the Republic of Moldova
Authors: Bulhac Ion , Gulea Aurelian , Batâr Dumitru
Published: May 2021

This article is dedicated to the history of apparition and development of Coordination chemistry in Moldova.The main scientific centres are characterized, as well as their main research directions. The most valuable results in fundamental and applicative research are described, obtained in the field of coordination chemistry in the republic.
Fluorescent N-Heterocycles via One-Pot Tandem Reactions
Authors: Dinica Rodica , Furdui Bianca , Cârâc Geta , Stanciu Constantin
Published: May 2021

Substituted indolizines are very attractive heterocyclic units. On developing efficient methods toward differently substituted indolizines, we were particularly interested in elaborating efficient approaches toward three-component reaction of these compounds which are very interested from the point of view fluorescent properties. The microwave-mediated three component reaction of acyl bromide, bipyridine and dipolarophyl is catalyzed by basic alumina to give corresponding bis-indolizines in excellent yields in a one –pot reaction.
Steroidal Glycosides from the Roots of Solanum Melongena L.
Authors: Shvets Stepan , Nedova Irina , Kintia Pavel , Bassarelo Carla , Pizza Cosimo , Piacente Sonia
Published: May 2021

One new cholestane glycoside, six steroidal glycosides of spirostane series and one pregnane glycoside have been isolated from the roots of Solanum melongena L. for the first time. Their structures were determined by physico-chemical methods.
The Content of Ochratoxin A in Moldavian Wine Products
Authors: Găină Boris , Sturza Rodica , Bejan Violeta , Bodean Constantin
Published: May 2021

The basic objective of this work is studying the content of ochratoxin A (OTA) in grapes, grape juice, and wine. This is an analysis of their origin, the conditions of contamination and ways decontamination, toxiconogenes mushrooms, toxicity, world and European regulations. It was estimated the methods of detection of mycotoxins in wine products. It has examined the contents of OTA in the Moldavian juice/wine from different varietals at different stages of winemaking and obtained by different proceeds winemaking.
Effect of Complex Formation on Electrochemical Behaviour of Metal-Containing Waste Waters
Authors: Covaliova Olga
Published: May 2021

The problem of preventing the heavy metals and other toxic substances release in environment due to the discharges of untreated plating and rinsing solutions is actual from both ecologic and economic point of view. It is crucial to prevent the environmental pollution and uncontrolled losses of resources (metals and other substances). The treatment technologies used today are not always efficient and cost saving and in some cases they may even provoke the secondary pollution of environment. Electrochemical treatment of industrial waste waters is one of the most promising technologies as it implies the same principles as the main technological processes and does not require introducing of chemicals into the treated solution. However, until now this method was given insufficient attention, although there are certain publications in this field [1].
Adsorption Wave of Vanadium Complex with 2,3–Dihydroxybenzaldehyde
Authors: Kiriyak Ludmila , Cecoi Natalia , Cazac Tatiana , Revenco Mihail
Published: May 2021

The polarographic behavior of the complex formed by V(V) and 2,3–dihydroxybenzaldehyde (2,3–DHBA) in the solution containing acetate buffer (pH 5,2) has been investigated. By means of a.c. polarography, chronovoltammetry and other techniques, it has been shown that the electrode process is complicated by the adsorption of 2,3-DHBA and its vanadium complex. The kinetic and adsorption parameters of the electrode process have been determined: adsorption equilibrium constant B= 1,32⋅105 mol-1⋅dm3, the attraction constant γ = 1,2, the maximum surface concentration Гmax = 9,10⋅10-11 mol⋅ cm-2; the share of the electrode surface occupied by one particle of the adsorbed complex S = 1,81 nm2 and the free adsorption energy ΔG = - 39,1 kJ· mol-1.
Epithermal Neutron Activation Analysis for Bacterial Transformations of Chromium
Authors: Tsibakhashvili N.Ya. , Mosulishvili L. , Kirkesali E. , Kalabegishvili T. , Kerkenjia S. , Frontasyeva M.V. , Duca Gh. , Zinicovscaia I.
Published: May 2021

Most powerful primary analytical technique, neutron activation analysis, was applied to study indigenous bacteria, namely, Arthrobacter genera which can be successfully used in detoxification and immobilization of toxic substances. In the present study the effect of Cr(VI) on the elemental content of these bacteria has been examined. The concentrations from 12 to 19 elements such as Na, Al, Cl, K, Fe, Co, Zn, As, Br, Rb, Sr, Sb, Ba, Tb, Th, U were determined in the bacterial cells. The high rate of Cr accumulation in the tested bacterial cells was shown. In bacteria treated with chromate some similarity in the behaviour of the following essential elements − potassium, sodium, chlorine − was observed. Such non-essential elements as Ag, As, Br and U were determined in all bacteria and have to be considered by cells as toxins.
Ionic Liquids Derivative of 1H-Imidazole as Novel Reagents, Catalysts and Solvents
Authors: Sargorovschi V. , Sucman N. , Iudin T. , Duca D. , Stingaci E. , Prodius D. , Pogrebnoi S. , Macaev F.
Published: May 2021

Ionic liquids are becoming widely used in chemical processes. Taking this into account we focus on recent advances in the synthesis and the investigation of 1H-imidazole derived ionic liquids. The fi rst part of this paper focuses on describing the developments in the synthesis and physical properties of 1,3-disubstituted imidazolium salts. The second part describes the application of these unique reagents, as catalysts and solvents in organic chemistry.
Thiocyanate Ion-Selective PVC Membrane Electrode
Authors: Revenco Mihail , Martin Mariana , Dayyih Waell Abu
Published: May 2021

A potentiometric selective sensor based on trinuclear chromium(III) complex as a novel ionophore for the thiocyanateselective electrode is reported. The sensor displays a near Nernstian slope of 57 ± 2 mV per decade, over a wide pH range 3 - 11. The working concentration range of the electrode is 1.10-5 – 1.10-1 mol/l with a detection limit of 5.10-6 mol/l. The sensor has a response time of 20 s and can be used for at least 6 months without any considerable fluctuation of the potential. The selectivity coefficients determined at using the fixed interference method indicate a good discriminating ability towards other anions. The prepared sensor was applied as an indicator electrode in the titration of thiocyanate with Ag+.
Cobalt Salts Production by Using Solvent Extraction
Authors: Dyakova Liudmila V. , Kasikov Aleksander G. , Kshumaneva Elena S. , Drogobuzhskaya A.
Published: May 2021

The paper deals with the extracting cobalt salts by using mixtures on the basis of tertiary amine from multicomponent solutions from the process of hydrochloride leaching of cobalt concentrate. The optimal composition for the extraction mixture, the relationship between the cobalt distribution coefficients and modifier’s nature and concentration, and the saltingout agent type have been determined. A hydrochloride extraction technology of cobalt concentrate yielding a purified concentrated cobalt solution for the production of pure cobalt salts has been developed and introduced at Severonikel combine.
Voltammetric Characterization of the Iron Behaviour from Steels in Different Electrolytic Media
Authors: Nemtoi Gheorghe , Ionica Florica , Lupascu Tudor , Cecal Alexandru
Published: May 2021

The dissolution of the iron from steel was observed by drawing the cyclic voltammetry (CV) for the systems consisting of the solution resulted when the alloy sample was immersed in HNO3, H2SO4, and HCl, aqueous solutions on platinum disk electrode (PtDE). The presence of some redox processes can be observed only in HNO3 which confirms the complexity of the mechanism of Fe dissolution in this acid. On the other hand, there were manufactured electrodes of steel samples taken into experiment achieving the corrosion characteristics in the media mentioned above.
C15 Functionalized Derivatives of Ent-Kaur-16-En-19-Oic Acid: Isolation from the Sunflower Helianthus Annuus L. and Synthesis
Authors: Grinco Marina , Chetraru Olga , Kulciţki Veaceslav , Barba Alic , Boico Alexandr , Vlad Pavel F. , Ungur Nicon
Published: May 2021

The known diterpenic ester – 15α-angeloyl-ent-kaur-16-en-19-oic (angeloylgrandifl oric) acid has been isolated from the dry wastes of Helianthus annuus L. The synthesis of 15α-hydroxy- and 15-oxo-ent-kaur-16-en-19- oic acids starting from ent-kaur-16-en-19-oic acid has been performed.