bluuebunny/crossref_metadata_2025 huggingface dataset:
Repurposing part of Glasgow’s iconic Kelvin Hall as a film and television studio
Authors: Pappas Paola Maria
Published: March 2023

Kelvin Hall is an iconic 1926 building in Glasgow, Scotland, that has served as an exhibition hall, museum and indoor sports arena. In the past 10 years the building has undergone its latest iteration of reuse, with installation of a public gym, sports halls and archive facility. In 2022 a new self-contained film and television studio was added within the existing structure. This paper describes the building’s latest adaptation and the various challenges encountered. It aims to provide practical guidance to engineers involved with similar building reuse and repurposing projects.
Effect of magnetite on physical, tribological and magnetic characteristics of kenaf fibre
Authors: Pujari Satish , Santosh Kumar Sattaru , Naveen Nambala S , Neelima Devi Chinta , Subramonian Siva Rao
Published: March 2023

The demand for organic fibres with remarkable mechanical, magnetic and physical properties is rising. As a result, the current study investigated the impact of magnetite reinforcement on kenaf fibre. The test samples were prepared by using the hand lay-up process with the addition of magnetite in the range 10–40 wt%. The test results showed that samples with a 30% magnetite content had the best mechanical, physical and tribological characteristics. They showed water absorption of 0 g, average wear of 112 μm and an average frictional force of 1.1 N. The magnetic absorption values of samples with 30 and 40 wt% magnetite were −0.0003 78 to 0.0003 8623 and −0.0002 6021 8 to 0.0002 5781 4 emu/g, respectively.
Long-term environmental impact of an artificial island of solidified dredged marine silt
Authors: Shu Shi , Xue Xiaomeng , Wang Qian , Li Yunquan , Hadkhale Pratap
Published: March 2023

Marine dredging silt that has been solidified is commonly used as a filler material for inland reclamation and artificial island construction. However, determining the long-term environmental safety of artificial islands made of solidified silt is a challenge. A bridge–tunnel conversion artificial island made of solidified silt was the research location of this study. Laboratory tests were conducted to study the effect of cement content on the pollutant pore-water concentration and hydraulic conductivity of solidified silt. The results showed that after solidification treatment, the heavy-metal concentration in the pore water of dredged silt reduced by 60–85%, whereas the concentration of hydroxide (OH−) ions increased 106–1070 times, and the hydraulic conductivity decreased by approximately three orders of magnitude. On the basis of the test results, the finite-element method was used for simulating the long-term transport of heavy metal nickel (II) (Ni2+) and hydroxide in artificial islands. When the cement content increased from 60 to 100 kg/m3, the nickel (II) concentration in the dam around the solidified silt decreased by approximately 68%, whereas the hydroxide concentration increased approximately tenfold. However, none of them exceeded the seawater water quality standard. This indicates that the long-term environmental safety of the artificial island could be ensured.
Between Restoration, Urban Renewal, and Revitalization: Maribor Old Town during the Late Socialist Period (1978-1990)
Authors: Mercadante Raimondo
Published: March 2023

The question of recovering the architectural heritage of Maribor in the post-war period — not just restoration but revitalization — found fertile ground in Slovenian architectural culture. During that time, Maribor, the second largest city in Slovenia, developed primarily as a productive industrial center. Following the construction of the Srednja Drava 1 hydroelectric power plant in 1966, the level of the Drava River rose, and it was necessary to demolish some late medieval and Baroque buildings of the ancient port of Pristan (Lent). That area became the epicenter of urban revitalization in the 1970s and 1980s, animated especially by architects Branko Kocmut, Bogdan Reichenberg, and Igor Recer. These interventions entailed a search for reconciliation between the methods of the Yugoslav socialist idea of self-management and the requests for a historic center in the city that would serve both cultural and recreational-tourist purposes for many years.
Zesting Up Stylometry with MapLemon: A Corpus for Stylometric Demographic Identification
Authors: Manning Theodore Daniel , Lukin Eugenia , Juola Patrick , Klein Ross
Published: March 2023

MapLemon is a corpus in its second iteration that was created to obtain a baseline corpus for linguistic variation among English-speaking North Americans. The MapLemon corpus currently houses upwards of 21,000 words across 185 participants, 10+ linguistic backgrounds, and 40+ US states and Canadian provinces. MapLemon also houses writing from 91 transgender and non-binary individuals. MapLemon presents a unique method for data collection in the virtual written medium and a corpus that has proven useful for identifying demographic information via writing style, otherwise known as stylometry.MapLemon est un corpus en sa deuxième itération qui a été créé pour obtenir un corpus de référence des variations linguistiques parmi les anglophones d'Amérique du Nord. Le corpus MapLemon contient actuellement plus de 21 000 mots provenant de 185 participants de plus de 10 origines linguistiques et de plus de 40 États américains et provinces canadiennes. MapLemon contient également les écrits de 91 personnes transgenres et non binaires. MapLemon présente une méthode unique de collecte de données dans le domaine de l'écriture virtuelle et un corpus qui s'est avéré utile pour identifier des informations démographiques par le biais du style d'écriture, également connu sous le nom de stylométrie.
O impacto das Tecnologias e Sistemas de Informação no desempenho organizacional
Authors:   Higher School of Economics and Business, Bianchi Isaías Scalabrin
Published: March 2023

O impacto das Tecnologias e Sistemas de Informação no desempenho organizacional
Modelo de estructuración de la decisión de compra en el consumidor electrónico por Internet en Costa Rica; Un abordaje neuro exploratorio
Authors:   Universidad Latina de Costa Rica, Sánchez Juan Diego Sánchez
Published: March 2023

el artículo aborda dos aristas de relevancia en materia del estudio de la decisión de compra de bienes tangibles a través de la Internet en Costa Rica. Precisando en primer lugar el perfil del comprador, el cual es basado en datos propios del individuo, pero analizados de forma inductiva desde una eventual perspectiva neural, haciendo un señalamiento de las posibles activaciones neuroconductuales que la persona pudiese estar generando. La segunda parte señala los elementos conformantes de la decisión de compra electrónica de la persona, indicando los aspectos que estructuran este patrón conductual, mismo que es analizado también desde una perspectiva de la neuroconducta de la comprador, logrando detallar así los aspectos que definen su estructuración final. Se finaliza con una propuesta de ecuación para la observancia de la decisión específica de forma ordenada y sistemática, permitiendo generar un modelo para su eventual aplicación.
Seramik Malzemenin Dili ve Kimliğin Taşıyıcısı Olarak Parmak İzi Dokusu
Authors: UĞUR Ayça , BALYEMEZ Meziyet Ayşe
Published: March 2023

Seramik malzeme ile üretim süreci malzemeye doğrudan temas etmeyi içermektedir. Seramik çamuru, yapısı gereği her dokunuşa yanıt ve tepki verir, kendisine yapılan her müdahalenin izini taşır. Sanatçının dokunuşu el ile şekillendirme aşamasında, kaçınılmaz olarak çalışma yüzeyinde ortaya çıkar. Bu çalışmada malzeme ile kurulan bağın sanat üretimine kaynak edildiği bakış açısı benimsenerek, el ile şekillendirilmiş güncel seramik çalışmalarda üretime bağlı olarak ortaya çıkan parmak izi dokusu araştırılmaktadır. Üretim ve şekillendirme sürecinde oluşan parmak izine odaklanarak, şekillendirme aşamasından sonra eklenen izlerin kullanıldığı çalışmalar kapsam dışında bırakılmıştır. Bu araştırma, seramik yüzeydeki parmak izinin taşıdığı anlam, kavram ve işlevin ne olduğu sorusuna üretim, doku ve algılama penceresinden cevap aramaktadır. Parmak izinin, malzemeye ve onu şekillendirene ait bir kimlik işareti ya da oluşturduğu doku nedeniyle bir dekor öğesi olabileceği öngörüsü ile yola çıkılmış, ancak örnekler üzerinden yapılan değerlendirmede bundan çok daha farklı ifadeler taşıdığı sonucuna varılmıştır. Ayrıca güncel çalışmalar incelendiğinde yakın tarihli sanatçı üretimlerinde ortak bir görsel dil yakalandığı da görülmektedir.
Etkileşimli Öğretimsel Videoların Başarı, Bilişsel Yük ve Video Kapılma Üzerine Etkisi
Authors: AKAN Salman , KESKİN Sinan
Published: March 2023

Bu çalışmada öğretimsel videolara çeşitli etkileşim ögeleri eklenerek oluşturulan etkileşimli videoların başarı, bilişsel yük ve video kapılma üzerine etkisi incelenmiştir. Yarı deneysel yöntem kullanılarak gerçekleştirilen bu araştırmanın çalışma grubunu bir ortaokulun 83 öğrencisi oluşturmuştur. Öğrenciler bir öğrenme yönetim sistemi üzerinden deney grubu için etkileşimli ve kontrol grubu için etkileşimsiz videoların yayınlandığı bir ders ile altı haftalık deneysel sürece katılmışlardır. Araştırma sonucunda, başarı açısından her iki grubun da anlamlı bir şekilde gelişim gösterdiği ancak gruplar arasında bir farklılığın olmadığı belirlenmiştir. Bilişsel yük açısından, etkileşimli ve etkileşimsiz videolarla öğrenen her iki öğrenci grubunda da benzer düzeyde bilişsel yüklenmenin gerçekleştiği görülmüştür. Son olarak video kapılma açısından değerlendirildiğinde gruplar arasında sadece dikkat boyutunda etkileşimsiz videolar lehine bir sonuç elde edilmiştir. Özetle videolardaki etkileşim ögelerinin ekstra bilişsel yük oluşturmadığı, dikkat boyutunda olumsuz bir etkisinin olabileceği söylenebilir.
Collaborative Online Learning across Cultures: the Role of Teaching and Social Presence
Authors: Grothaus Christin
Published: March 2023

Collaborative online learning (COL) has been associated with positive outcomes, such as critical thinking, shared problem-solving skills, and deep learning. Such outcomes require pedagogies that consider students’ backgrounds, including the cultural context in which they operate. This study reflects upon the role of culture through the lens of the Community of Inquiry Framework (CoI) and the elements of social - and teaching presence. German and Thai students were selected due to cultural differences in values of power distance, collectivism, and femininity. 20 in-depth interviews on students’ experiences with COL were conducted. Findings revealed differences in perceptions of and factors influencing social- and teaching presence across the two samples. German students were hesitant to initiate contact with non-familiar classmates through digital communication tools. The use of the camera overall supported social presence but also affected Thai students negatively, who were more concerned about the judgment, and emotions of classmates. Teaching presence differed as social media and messenger applications were more readily utilized for collaboration in Thai universities. While the presence of the lecturer in break-out rooms increased Thai students' voicing behavior, German students opened up as the lecturer was absent. The possible influence of educational-, national- and cybercultures is being discussed.
Method of simultaneous equations of material and energy balances when calculating actual data of thermal efficiency of gas turbine plants
Authors:   Ivanovo State Power Engineering University, Zinovieva A.S. , Gorshenin S.D. ,   Ivanovo State Power Engineering University, Ledukhovsky G.V. ,   Ivanovo State Power Engineering University, Zhukov V.P. ,   Ivanovo State Power Engineering University
Published: March 2023

Reconciliation of material and energy balances according to data received from systems of technical and commercial record keeping is a mandatory step to calculate thermal efficiency indicators of thermal power plant (TPP) equipment. At the same time, the methodology to draw the balance is not regulated by regulatory documents for gas turbine plants. Appropriate approaches to solve the issue under consideration have not been worked out. There is no data on the impact of the balancing on the results of calculating the actual values of the gross efficiency of gas turbine plants. Thus, it is relevant to develop a methodology of simultaneous equations of the material and energy balances of gas turbine plants. The problem of simultaneous equations of the material and energy balances of a gas turbine plant in a scalar value is formulated within the framework of the concept of solving ill-posed problems based on Tikhonov's regularization. The concept allows one to obtain an analytical solution. When conducting calculations, data from the automated process control system of the operated GTX-100 gas turbine plant have been used. The method of simultaneous equations of the material and energy balances when calculating the actual indicators of the thermal efficiency of gas turbine plants is proposed. The influence of the balancing procedure on the results of calculating the actual values of the thermal efficiency indicators of a gas turbine plant is shown. The authors have determined the maximum deviations of the actual gross efficiency values when adjusting the results of measuring the controlled parameters using the example of GTX-100 gas turbine plant. The developed technique makes it possible to consider the maximum allowable total discrepancy between mass and energy balances, as well as the maximum deviation of the parameter values adjusted according to the balancing results, due to the standardized metrological characteristics of measuring instruments.
Methodology and results of analysis of output energy quality of autonomous AC power supply systems with modular static converters in steady-state mode
Authors:   Novosibirsk State Technical University, Korobkov D.V.
Published: March 2023

Modern autonomous power supply systems (APSS) of alternating voltage with high-frequency modular static converters (SC) operate under conditions of a large range of changes of the parameters of the primary source of electrical energy and load with modes of intermittent phase currents of the SC modules. APSS with high-frequency modular SC are characterized by a complex spectral distribution of the output energy coordinates with the dominance of canonical harmonics. Thus, the task to develop methods for analyzing the quality of generated electric power of such type of APSS in a wide range of disturbing factors with the dominance of canonical harmonics in the coordinates of the output energy is relevant. For the specified type of APSS, it is reasonable to use the time deformation method for the average values of the coordinates of the output energy under the sinusoidal modulation law on the interval of constancy of the SC structure. The procedure to investigate the influence of APSS operating modes and methods of correction of the modulation law on the quality of output energy is demonstrated by the example of two types of systems. The authors have defined the conditions of the worst value of the harmonic coefficient of the output current in APSS with cycloconverter and multiphase permanent magnets synchronous generator. The authors have demonstrated the effect of modifying the control law by shifting the modulation center and introducing negative current feedback on the possibility to improve the coefficient by 50 %. The authors have defined the conditions of the worst value of the harmonic coefficients of the internal EMF and output current in APSS with an intermediate DC voltage link and a modular two-level voltage inverter. The proposed method to analyze the steady-state operation of APSS with high-frequency modular SC makes it possible to identify the conditions of the worst quality of generated electrical energy and assess the impact of control methods of APSS in a wide range of system parameters, considering the presence of intermittent currents.
Equivalence of sections of electric power systems based on operating parameters in equivalence nodes
Authors:   Ivanovo State Power Engineering University, Vikharev D.Yu. , Vorobyova E.A. ,   Ivanovo State Power Engineering University, Gandzhaev D.I. ,   Ivanovo State Power Engineering University, Lifshits A.S. ,   Ivanovo State Power Engineering University, Murzin A.Yu. ,   Ivanovo State Power Engineering University, Rodin N.A. ,   Ivanovo State Power Engineering University
Published: March 2023

When modeling steady-state and transient operating modes in electric power systems, it is necessary to determine a section of the electrical network to simplify the processes occurring in the area not covered by equivalenting. In this case, it is necessary to identify equivalents and relationships with respect to the speci-fied section. The purpose of the research is to determine the parameters of the equivalent sections of power systems and their relationships with respect to the given nodes. Methods of mathematical modeling of the elements of power systems, methods of the theory of electric circuits, and methods of matrix analysis are used. To verify the results, electrical circuits of existing power systems and the software package “Auto-mated Workplace of Relay Protection and Automation Service” have been applied. The implementation of the algorithm is carried out using programming in the Python environment. An algorithm to determine the parameters of equivalent circuits of positive, negative and zero sequences is developed and tested when solving the problem of equivalenting a network section with respect to given nodes. Comparison of the levels of currents in case of short circuits according to the developed algorithm and the software package “Automated Workplace of Relay Protection and Automation Service” in the equivalent nodes shows the high accuracy of the equivalent results in accordance with the developed algorithm. The algorithm considers transformer connections when equivalenting with respect to the nodes located at different voltage classes, as well as phase shifts caused by the star-delta conversion.
Development and research of Rogowski coil to operate under operating conditions of open switchgear
Authors:   Ivanovo State Power Engineering University, Yablokov A.A. , Kabakov P.A. ,   Ivanovo State Power Engineering University, Gotovkina E.E. ,   Ivanovo State Power Engineering University, Panaschatenko A.V. ,   Digital Instrument Transformers SPA LLC
Published: March 2023

The interest to use Rogowski coils (RC) as current sensors to design secondary systems increases due to application of microprocessor relay protection and automation devices, including those that support the reception and processing of information in a form of a digital code in the format of protocols defined in IEC61850, as well as the disadvantages of traditional electromagnetic current transformers. Despite the popularity of RC, there are many unstudied issues of their functioning under operating conditions of open switchgears of power facilities, especially when operating with modern relay protection and automation devices. The aim of the study is to analyze the effect of ambient temperature on the error of current conversion by Rogowski coils. Studies of Rogowski coils have been carried out using the experimental and industrial samples. During the research modern testing equipment has been used. The equipment is listed on the Unified Register of Measuring Equipment of the Russian Federation and has valid verification certificates. The analysis of the factors influencing the error of metrological channels has been carried out. The analysis is conducted based on traditional current transformers (CT). The factors influencing the measurement error of RC are systematized. Experimental data obtained as a result of the study of the RC conversion error in a wide temperature range are presented. It has been established that due to design solutions, it is possible to neutralize the influence of such factors as the position of the primary conductor, external electromagnetic fields, uneven winding, the number of layers of the secondary winding, and thermal expansion. The use of materials with a low coefficient of linear expansion to manufacture the core of the Rogowski coil makes it possible to obtain the metrological characteristics of the transducer that meet the requirements of normative technical documentation in a wide temperature range. Application of RC as a primary current sensor for relay protection and automation systems is a promising area that requires further comprehensive research, and specifically in the process of industrial operation.
On the Bimodal Gumbel Model with Application to Environmental Data
Authors: Otiniano Cira , Vila Roberto , Brom Pedro , Bourguignon Marcelo
Published: March 2023

The Gumbel model is a very popular statistical model due to its wide applicability for instance in the course of certain survival, environmental, financial or reliability studies. In this work, we have introduced a bimodal generalization of the Gumbel distribution thatcan be an alternative to model bimodal data. We derive the analytical shapes of the corresponding probability density function and thehazard rate function and provide graphical illustrations. Furthermore, We have discussed the properties of this density such as mode, bimodality, moment generating function and moments. Our results were verified using the Markov chain Monte Carlo simulation method. The maximum likelihood method is used for parameters estimation. Finally, we also carry out an application to real data that demonstrates the usefulness of the proposed distribution.
TOURISM IN SOCIAL NETWORKS AS A COMPONENT OF SMART POWER IN MODERN POLITICAL PROCESSES
Authors:   Taras Shevchenko National University of Kyiv, Ukraine, Tkach Oleg , Tkach Anatoly ,   Open International University of Human Development «Ukraine» Ukraine
Published: March 2023

The article considers tourism as a component of the concept of soft power within the framework of implementation of the smart strategy by political actors power. Special attention is focused on the influence of tourism on modern political processes. The heuristic potential of tourism as a policy tool is outlined. an explanation is offered that tourism in social networks is defined as a component of smart power in modern political processes. Tourism represents communicative practices that can be successful in attracting billions of people around the world, and therefore is an ideal platform for positioning the state, its culture, and brand. It is substantiated that tourism is a component of a package of tools used by states that are actively developing in order to mark their soft power in the context of the smart strategy power. Therefore, tourism is an ideal form for the implementation of this strategy, because it is characterized by an appeal to universal values and the ability to «glue» divisions in society. It is determined that the tourism industry fits within the concept of public diplomacy since such events become modern state-centric affairs, providing unique opportunities for states to be under the close attention of television audiences around the world. Tourism is the personification of the image of the purpose and content of public diplomacy, which includes the construction, mass communication of the positive use of the history and culture of the state, political actors. The article is devoted to the study of tourism as one of the socio-cultural mechanisms of maintaining international prestige, establishing feedback with the foreign community, a tool for improving the effectiveness of public diplomacy, increasing its influence on the international space through its cultural, historical and political values. Tourism is examined as a constituent of the soft power concept within the realization of the smart power strategy by political actors. The special attention is paid to the influence on modern political processes by the events. The heuristic potential of tourism as a political tool is outlined. Competent connection of domestic tourist potential as an important complement to the country’s foreign policy will help increase the efficiency of its so-called «soft power». Tourism as a constituent of modern political processes.
EVOLUTION OF MALAYSIA’S FOREIGN POLICY PRIORITIES (1957–2022)
Authors:   Kyiv International University (Kyiv) Ukraine, Krupenya Iryna
Published: March 2023

The article analyzes the evolution of foreign policy priorities of Malaysia as one of the leaders of the countries of the Southeast Asian subregion and the Islamic world. These are analyzed as internal factors of foreign policy formation: political and socio-economic development of the country, historical and national characteristics, interethnic problems, struggle against communist guerrilla movement, as well as external factors: role of «major powers», evolution of security system and integration processes in the region, border problems with neighboring countries, Islamic factor and globalization. The foreign policy initiatives of each past and present prime minister have been studied. It is emphasized that the biggest fundamental changes in Malaysia’s foreign policy were made during the government of Mahathir Mohammad, who served as prime minister twice (1981–2003), (2018–2021). Foreign policy was even more pragmatic and focused on the economic component; was characterized by persistent efforts to protect the interests, rights and aspirations of developing countries («third world» countries); more active development of bilateral relations with ASEAN partners and strengthening of relations with Muslim countries was emphasized. The reforms proposed by the Prime Minister of Malaysia, Mahathir Mohammad, were aimed at restructuring the country’s economy in order to achieve a more equal distribution of national wealth at all levels, among different communities, so that the proportions between the poor and rich Malays were approximately the same as between the poor and rich non-Malays. As a statesman and politician, Mahathir Mohammad sought to transform Malaysia into an industrialized country by 2020, and he succeeded.
The Effect of Ursolic Acid and Hyperinsulinemia on the Liver and Kidney Function of Alloxan-Induced Diabetic Male Rabbits
Authors: Hilal Jinan , Hasan Bushra F. , Mohammed Yasmeen J. , Khudair Abdul Razzak N.
Published: March 2023

The study aimed to examine the effect of extracted and standard ursolic acid in addition to hyperinsulinemia compared to vitamin B complex on the liver and kidney function of alloxan-induced diabetic male rabbits. The liver and kidney functions were determined and analyzed by one–way of a NOVA at variance software at a P-Value of 0.05. The result showed a significant decrease in aspartate aminotransferase (AST), alanine aminotransferase (ALT), alkaline phosphatase (ALP), and uric acid values in the groups treated with standard and extraction ursolic acid(UA) compared to the diabetic group. The rabbit group that was treated with vitamin B complex recorded a significant decrease in the three liver enzymes, uric acid, and creatinine values than the diabetic group. In addition, the rabbit group that was treated with hyperinsulinemia recorded a significant increase in aspartate aminotransferase (AST) and creatinine values than the diabetic rabbit group. While the histological results in the groups treated with standard and extraction ursolic acid had a clear ameliorative effect in liver and kidney function tests better than hyperinsulinemia, also vitamin B complex caused some good effects.
Formation of water behavior as an element of lifestyle
Authors: Lopatin Stanislav A. , Tyts Valery V.
Published: March 2023

Water behavior is a series of simple and complex actions related to the use of water and depending on the knowledge of the norms and rules of behavior in the environment, on the ratio of motivational and emotional components in a persons life. Water behavior, participating in the formation of ecological culture, is an indicator and the most important tool for ensuring the environmental safety of the population and pharmaceutical production, which needs high quality water. It is noted that if drinking water is used in pharmaceutical production directly at individual stages or as a starting material, then regular checks of its quality at the production site are necessary. A certain optimism is brought by the measures that the leadership of Rospotrebnadzor of the Russian Federation has recently taken, aimed at improving the laboratory support of the service by equipping it with high-tech equipment to determine the safety and quality indicators of environmental elements, including water. One of the manifestations characteristic of most subjects of water behavior is the optimistic level of assessment of the state of drinking water supply sources and the quality of drinking water. The authors propose, when building the water behavior of a pharmaceutical production manager, to take into account a number of circumstances related to the chemical safety of drinking water: conducting an inventory and clarifying the list of chemicals that are in circulation on the territory of the Russian Federation and are potentially dangerous toxicants; creation of a federal database on the quality and safety of food products (water) produced and sold in the Russian Federation, including those containing priority chemical pollutants. The consideration of water behavior as an element of lifestyle allows, when modeling the water behavior of pharmaceutical production managers, to orient them towards taking measures to improve the chemical safety of the water factor by improving both water treatment and the laboratory control system.
Light intensity and giberelic acid in the seedling\production of four ornamental species
Authors: Jung Ketlyn  Custodio , Porto Alexandre Hack , Stefeni Alberto Ricardo , Morgenrotd Wellyton , Wagner Júnior Américo
Published: March 2023

Ornamental species, especially those involving the use of seedlings in trays to serve residential gardens, need to be produced quickly for commercialization, which requires studies that provide such a condition. The present work aimed to evaluate the effect of light intensity and exogenous application of gibberellin on seedlings of four ornamental species (Calendula officinalis, Gypsophila elegans, Solenostemon scutellarioides and Viola wittrockiana). The experiment was carried out at the Universidade Tecnológica Federal do Paraná, Campus Dois Vizinhos. The seeds were sown in trays containing substrate composed of a mixture of humic Distroferric Red Latosol: medium texture sand: commercial substrate, in the volumetric proportion of 2:1:1, respectively. The trays were kept in shading environments, using black screens with 35%, 50% and 80% shading intensity, red with 35% shading, in addition to full sun. After 30 days of emergence, gibberellic acid solution was applied to the seedlings at concentrations of 0 mg L-1 and 300 mg L-1. Emergence, emergence speed index, mean emergence time, total length, shoot and roots, number of leaves, leaf area, root volume density, shoot, root and total dry matter were evaluated. For each environmental condition of cultivation, the values of temperature and air humidity and light intensity were obtained. The use of gibberellic acid proved to be beneficial for Viola wittrockiana and Solenostemon scutellarioides. The shading environments, regardless of color and light intensity, were more favorable for the formation of seedlings of these four ornamental species.
Loss of genetic diversity among pirarucu broodstocks in fish farms: a pilot study
Authors: Santos Jeremias Silva dos , Guerreiro Sávio , Medeiros Natalia Bianca Caires , Alves Kaliandra , Hamoy Igor , Nunes-Rodrigues Marilia
Published: March 2023

Molecular markers can be used to monitor genetic variability in cultivated fish stocks with the aim of developing better aquaculture techniques and increasing productivity. Our objective was to evaluate genetic variability in pirarucu broodstocks in fish farms in the southeast and northeast of Pará state, Brazil. The samples were genotyped using four microsatellite markers, and genetic diversity indices were calculated for each broodstock. A total of 16 alleles were identified from the four loci tested in the 33 pirarucu samples, with means of 3.00, 2.75, and 2.25 alleles per locus in broodstocks from Tucumã, Parauapebas, and Moju municipalities, respectively. The Parauapebas broodstock had the highest mean observed heterozygosity. In the broodstocks from Tucumã and Parauapebas, the markers AgCAm16 and AgCAm18 were not at Hardy-Weinberg equilibrium. We can suggest that there were considerable losses of genetic variability in the pirarucu breeding centers of the municipalities of Tucumã, Parauapebas and Moju, compared to natural populations.
Gas exchange and morphometric characteristics of basil according to the times and collection positions in the plant
Authors: Coutinho Pablo Wenderson Ribeiro , Echer Márcia de Moraes , Guimarães Vandeir Francisco , Bulegon Lucas Guilherme , Abade Mayra Taniely Ribeiro , Rocha Maria Eunice Lima
Published: March 2023

The productive potential of plant species depends on the genotype versus environment interaction, so the choice of cultivar is decisive for the success of the crop. Thus, the objective of this work was to evaluate the levels of photosynthetic pigments and morphometric characteristics of two cultivars of green and red basil as a function of the collection time and different collection positions in the plant, as well as the gas exchange in response to variation of the flux density of photosynthetically active photons. The experiment was carried out in a protected environment with a randomized block design in a 2 x 3 x 3 factorial scheme containing 2 treatments consisting of two basil cultivars (alfavaca basilicão, red and green) and fifteen replications. The first factor was constituted by the cultivars, the second, by the time of collection, and the third, by the positions in which the collections were carried out on the plant. For evaluations of morphometric variables and gas exchange rates, the two cultivars were compared. Basil has photosynthesis saturation at radiation rates of about 1500 μmol m-2 s-1. The green colored cultivar was more productive, in addition to having the highest levels of chlorophyll a, b and total, and lower rate of leaf transpiration in response to photosynthetically active photons flow density, adapted for greater carboxylation efficiency and water use.
Gametophytic self-compatibility and its influence on the physical characteristics of plum fruit
Authors: Carvalho Flávio Corrêa de , Inglês Bruna Aparecida , Silveira Daniel Mocelin , Silva Clandio Medeiros da , Francisco André Luiz Oliveira de
Published: March 2023

Gametophytic self-incompatibility can be one of the obstacles to achieving high yields in plum orchards. Therefore, we sought to verify in the field, the occurrence of gametophytic self-compatibility and its influence on the physical characteristics of fruits in Japanese plum accessions. The work was installed at the Research Pole of IDR-Paraná in Ponta Grossa-PR, in 2021, selecting six accesses belonging to the BAG-Ameixa site. The experimental design was completely randomized (DIC) with a split plot (6 x 2), with the plot having six accessions and the subplot having two methods of pollination, induced self-pollination and free pollination, with five replications. For the variables related to the physical quality of the fruits, the DIC was delimited, with the six accessions as treatment and four replicates of five fruits. Data were analyzed using the Rstudio software, applying the Tukey test at the 5% level. The variables observed for self-compatibility were the percentage of apparent and effective fruiting. For the physical quality of fruits, the total mass, seed and pulp, vertical and horizontal diameter, volume, pulp yield and seed/fruit mass ratio were evaluated. Free pollination was higher in the percentage of apparent and effective fruiting, and the genotypes PR-1013 and PR-1095 were the materials that presented the highest percentages for these variables, as well as for the physical quality of the fruits. The evaluated accessions were considered self-incompatible for not having fruits that reached the final maturity, being free pollination the best method of pollination for the development of fruits.
Compatibility of fungicides with Trichoderma asperelloides and Azospirillum brasilense
Authors: Joseph Louis Antoniel , Sousa Kellem Ângela Oliveira de , Chagas Júnior Aloísio Freitas , Luc Frantzdy
Published: March 2023

The use of fungicides to control agricultural diseases has been increasing in agriculture. Thus, the biological control using fungus is an effective tool in the integrated diseases management. This study aimed to evaluate the compatibility of fungicides Certeza, Apron and Vitavax on the microorganisms Trichoderma asperelloides and Azospirillum brasilense. The experiments were conducted in vitro in a completely randomized design with a factorial arrangement 2 x 3 with three replications. The first factor composed of two doses and the second referred to the fungicides. The microorganisms were developed in PDA medium. After the medium has solidified, in a flow layer 10 µL of the fungal solution was added to each plate with the aid of an automatic pipette (D1, recommended dose; D2, double of recommended dose). Then, each Petri plate was centrally inoculated with a disc of Trichoderma asperelloides, in addition to the uninoculated control. For Azospirillum brasilense, the colony surface was scraped with the aid of a sterilized Drigalsky loop. Then, the filter of discs paper was dipped in the fungicides solution and placed on the medium surface. After this process, the plates were incubated in a BOD (Biochemical Oxygen Demand) at 26±2ºC and photoperiod 12 h. The parameters evaluated were a mycelial growth and sporulation. The results showed that there was no significant interaction between the factors. The fungicides Certeza (Tiofanato metílico + Fluazinam), Apron (Fludioxonil + Metalaxil-M) and Vitavax (Carboxina + Tiram) are considered compatible with Trichoderma asperelloides and Azospirillum brasilense. The fungicides can be used in an integrated disease management practices, priority must be given to use the products that have been shown to be less harmful.
CHEMICAL AND PHENOLIC PROFILE OF 'SAUVIGNON BLANC' WINES MADE IN ALTITUDE REGION OF SANTA CATARINA STATE – BRAZIL
Authors: Marcon Filho José Luiz , Würz Douglas André , Brighenti Alberto Fontanella , Rufato Leo , Kretzschmar Aike Anneliese
Published: March 2023

The objective of this work was to perform a characterization of chemical and phenolic profile of 'Sauvignon Blanc' wines produced in the altitude region of Santa Catarina State. The study was carried out with samples of commercial wines, in 2012 and 2013 vintages, selected from nine wineries. Two samples were taken from each winery to carry out the characterization of chemical compounds, evaluating, in triplicate: ethanol, residual sugar, pH, total acidity, color, total polyphenols and individual phenolic compounds. The results of chemical and phenolic evaluations of commercial wines 'Sauvignon Blanc' demonstrate the quality of these products, with high alcohol content and preservation of organic acids, due to the climatic characteristics of the region, which influence grape maturation. All evaluated samples presented reducing sugar values lower than 5 g L-1, indicating that they were all dry wines. In addition, they presented a coloration (Abs 420nm) of 0.12, these values can be considered low, indicating the absence of oxidation process in the wines. The phenolic compound most present in the wines was caftaric acid, in both vintages. With the exception of p-coumaric acid and GRP the commercial 'Sauvignon Blanc' wines, vintage 2013, presented the highest values of individual phenolic compounds.
Intraspecific crosses and agronomic evaluation of hybrid progenies of bahiagrass
Authors: Krycki Karine Cristina , Motta Eder Alexandre Minsk da , Brunes André Pich , Mills Annamaria , Weiler Roberto Luis , Simioni Carine
Published: March 2023

Paspalum notatum Flügge (bahiagrass) is one of the most common native grasses found in southern Brazil and have become one of the most promising forage species considering their value for beef cattle production in the tropics and subtropics. The breeding program has been possible through intraspecific hybridization among sexual and apomictic clones, generating progenies with variability for agronomic traits. Hybrid materials with superior agronomic performance can be selected, registered and protected to be made available as a commercial cultivar. The objective of this work was to evaluate 24 intraspecific hybrids and select them for the superior agronomic traits, as well analyze correlations between forage traits that can assist in the selection of genotypes. Based on the three years of evaluation, hybrids KD9, KF1, KF4, and KD5 produced higher total dry mass than other genotypes. The hybrid KF4 too had greater leaf dry matter; KF1 and KF4 were the more cold tolerant. These genotypes were selected for new cycles of hybridization and field evaluations, such as seed production, fertilizer use efficiency and animal performance. The high correlation of the total dry mass with the other forage components might be useful for indirect select criteria in bahiagrass improving strategies.
SÍNTESE DE PROTEÍNA MICROBIANA E BALANÇO DE NITROGÊNIO EM NOVILHAS MESTIÇAS HOLANDEZ /ZEBU ALIMENTADAS COM DUAS FONTES DE TANINOS
Authors: Souza Carla Giselly de , Gonzaga Neto Severino , Henriques Lara Toledo , Araújo Gherman Garcia Leal de , Seki Dias Luciana Thie , Muniz Ana Jaqueline Cavalcante
Published: March 2023

Tannins have been used to trigger positive effects on ruminal metabolism. So, increasing levels of tannic acid in a sorghum-based diet for five Holstein/Zebu crossbred lactating heifers were subject to a 5 × 5 Latin square experimental design, five heifers x five tannins acid levels x five periods. The excretion of total purine derivatives, through the collection of spot urine samples, and the N concentration values in the milk and urine were used. All heifers received 9.87 kg/DM of corn silage as roughage and 6.38 kg of concentrate (not fed ad libitum). Diet 1 (control) contained low-tannin sorghum (0.027kg total tannin), and the other diets contained high-tannin sorghum. The levels of tannic acid added used were established based on the quantity of condensed tannin in high-tannin sorghum. Thus, diets 2, 3, 4, and 5 were supplemented with 1.5g (13.%DM), 79.5g (2.6%DM), 157.5g (3.9%DM), and 235.5g (5.2%DM) of tannic acid totalling 0.078, 0.156, 0.234, and 0.321 total tannin kg/day respectively. The urinary excretions of urea (2.0055), total allantoin (185.12  mmol/day-1) , and total purine derivatives (222.32 mmol/day-1); absorbed purines 179.3 mmol/day-1); the N microbian synthesis (130.358 (g)N/day-1); and the concentrations of allantoin in milk (36.40 mmol/day-1) were not affected by the diets. Diets using two tannins sources supplementation did not affect the animal’s health, that is, it did not change the blood and metabolic rates above the normality indices for the animal category, neither improved the efficiency of the microbial synthesis nor the balance of N for milk production
Mainstreaming the Cluster Approach in the Caribbean Region: The CCPF Cluster Capacity Building Initiative
Authors: Rabellotti Roberta , Conz Elisa
Published: March 2023

In the Caribbean region, clusters hold tremendous potential because of the predominance of small and micro enterprises, their weak link in value chains and the scarcity of specialized inputs. The Compete Caribbean Partnership Facility (CCPF) has backed a capacity-building campaign for the cluster approach with the aim of mainstreaming cluster interventions in the region. This report explores how the process of mainstreaming is taking shape among those business support organizations (BSOs) involved in the CCPF project, currently involved in the implementation of cluster projects. The study addressed these questions: (i) Have the BSOs improved their capacity to identify, design, and implement sustainable cluster initiatives? (ii) Is the cluster approach becoming mainstream in the Caribbean region? Based on primary evidence, the main findings are as follows. BSOs have played a key role by engendering a collaborative culture amongst clusters. One of the main achievements in implementing cluster programs is the increasing cooperation between clusters. Among the BSOs, there is general agreement over the usefulness of monitoring the cluster implementation when taking informed decisions, but the collection of information is also challenging. In the Caribbean region, cluster policies do not yet represent the core of industrial development policies; nonetheless, the potential for a more regional approach to cluster mainstreaming has surfaced in interviews. Policy recommendations for introducing and promoting the mainstreaming of a cluster approach in the Caribbean region should take a three-pronged approach that focuses on (i) cluster organizations, (ii) national ecosystems, and (iii) regional ecosystems.
Rendimiento social de la banca pública: indicadores basados en cantidades
Authors: Támola Alejandro , Fernández Díez M. Carmen , Botteon Claudia , Pollini Adriana
Published: March 2023

Tradicionalmente, ha sido difícil medir el rendimiento social de las actividades de la banca pública, ya que los sistemas de información contable y financiera capturan indicadores relevantes para entidades financieras privadas que no son suficientes para medir la adicionalidad financiera, económica y social que se genera con intervenciones públicas. Esta publicación desarrolla indicadores de rendimiento social que comienzan a cerrar esta brecha, ya que sirven para medir el impacto de la banca pública en aquellos ámbitos que superan el alcance de la banca privada, como por ejemplo, en materia de externalidades, bienes públicos, fallas de mercado y objetivos sociales. Además, formaliza la conceptualización de los indicadores, describe cómo se genera la información pertinente de manera sistemática y plantea cómo se estiman los valores de interés y se integran dentro de los sistemas tradicionales de información. Finalmente, a través de la aplicación específica de estos indicadores en una entidad financiera de desarrollo en México, la publicación muestra la factibilidad de montar un sistema para medir el rendimiento social y su valor para priorizar las actividades de la banca pública.