bluuebunny/crossref_metadata_2025 huggingface dataset:
A bibliometric-qualitative study about the use of System Dynamics in the areas of Project and Program Management
Authors: Sales Luciano da Silva Bastos , Barbalho Sanderson , Augusto Rodrigo
Published: November 2021

Abstract Despite the proliferation as well as great advances in the development of dynamic models applied to project management, research that applies system dynamics principles to program management does not seem to be as fertile. The objective of this paper is to obtain a more accurate vision of how the system dynamics theory is being used in the development of the program management field. The bibliometric-qualitative study confirms there is a robust use of system dynamics tools in the project management area, with a wide range of applications as well as solid results. The study, however, also shows that for programs, despite a noticeable increase regarding the interest in program management by organizations, clearly there is much less research uniting program management and system dynamics. More importantly, some dynamic models are being used to improve the performance of programs, however, few studies take into consideration the specific variables from program management. Thus, we conclude that current research on these two topics can only be viewed as fragmented and in its early stages, offering ample room for improvement.
A retração no mercado de trabalho da construção (2012-2019): Brasil e RMSP
Authors: Araújo Juliana Bacelar de , Trovão Cassiano José Bezerra Marques
Published: November 2021

Resumo O objetivo deste artigo é analisar a retração no mercado de trabalho da construção, entre 2012 e 2020, no Brasil e na Região Metropolitana de São Paulo – RMSP, focando no subsetor de Construção de Edifícios. Observou-se uma forte retração no número de empregos formais na Construção de Edifícios, com aumento do peso da ocupação por conta própria, da informalidade e da participação dos trabalhadores com menor remuneração, inclusive na RMSP. A crise de 2015-2016 acentuou esse movimento, aumentando a precarização do trabalho, não equacionado pela reforma trabalhista ou pela lenta recuperação após 2017, baseada na criação de postos de trabalho de baixa remuneração. A pandemia impactou significativamente o setor, evidenciando a necessidade de melhorias nas suas relações e condições de trabalho.
Crítica situada: cuatro postulados sobre el trabajo de la crítica literaria en la cotidianeidad
Authors: Tennina Lucía
Published: November 2021

Resumen Este artículo consiste en una serie de lineamientos dirigidos a repensar nuestro lugar de habla en tanto críticos literarios en función de establecer un diálogo atractivo y efectivo con la cotidianeidad. Se parte de una idea de crítica literaria “situada” pensada más que como una disciplina, como una práctica que permite activar sensibilidades sobre lo establecido, por lo que crea otras formas de imaginarlo. La hipótesis principal afirma que los estudiosos de la literatura deben pensarse a partir de cuatro identidades: la de escritores, la de archivistas, la de etnógrafos y la de difusores. A partir de ahí, se analizan las producciones de Josefina Ludmer, Regina Dalcastagnè, Sylvia Molloy y Víctor Vich prestando atención a sus operaciones alrededor del canon hegemónico y sus metodologías específicas de trabajo.
Análise da dose vocal em pessoas cisgênero: resultados preliminares
Authors: Lima Caroline de , Barros Alana Dantas , Gama Ana Cristina Côrtes
Published: November 2021

RESUMO Objetivo Verificar a diferença das medidas de frequência fundamental, intensidade e de dose vocal entre mulheres e homens cisgêneros, em situações de mesma demanda de voz. Métodos Trata-se de uma pesquisa observacional transversal. Participaram do Grupo 1 cinco homens cisgêneros, com idade entre 21 e 24 anos, e do Grupo 2, cinco mulheres cisgêneras, com idade entre 22 e 25 anos, todos sem queixas vocais e estudantes do curso de Fonoaudiologia. Os indivíduos foram pareados por demanda vocal, sendo que todos estavam matriculados nas mesmas disciplinas do curso de graduação. Todos os participantes se autodefiniram como cisgêneros, ou seja, identificaram-se com o sexo designado ao nascer. A coleta foi realizada de forma simultânea aos pares (um participante do G1 e um do G2), por um período contínuo de dez horas. Para a coleta de dados, utilizaram-se dois dosímetros da marca VoxLogⓇ. Para comparação das medidas entre os grupos utilizou-se o teste t de Student, com nível de confiança de 95%. Resultados Observou-se que as mulheres cisgêneras apresentaram maiores valores de frequência fundamental (p=0,001), porcentagem de fonação (p=0,037), dose cíclica (p=0,002) e dose de distância (p=0,008). A intensidade da voz de ambos os grupos foi semelhante no período avaliado. Conclusão Mulheres cisgêneras apresentam maiores valores de frequência fundamental, porcentagem de fonação, dose cíclica e dose de distância, do que homens cisgêneros. Avaliar a dose vocal entre os gêneros é importante para a melhor compreensão dos fatores etiológicos das disfonias comportamentais e para definir uma reabilitação vocal mais personalizada.
Remote site supervision of a project in rural Uganda during Covid restrictions
Authors: Spinola-Richards Olivia
Published: November 2021

Engineers for Overseas Development is a UK-based charity specialising in development projects across rural Africa. Each project provides opportunities to upskill both local construction workers and UK engineer volunteers, who take responsibility for design and site supervision. In January 2022, the charity’s Cardiff branch delivered the first phase of a much-needed English teaching nursery and primary school in Uganda. In a first for the charity, construction was supervised entirely remotely due to Covid-19 travel restrictions. This paper outlines how this was achieved, highlighting the challenges and solutions developed.
Systems integration in infrastructure projects: seven lessons from Crossrail
Authors: Whyte Jennifer , Davies Andrew , Sexton Chris
Published: November 2021

A systems integration model for the delivery of complex infrastructure projects is proposed. From the Crossrail case, the authors draw seven lessons for clients to: (1) manage programme delivery as an integration activity; (2) actively manage systems integration; (3) ensure authority to make decisions; (4) maintain configuration control; (5) plan for a lengthy testing and commissioning phase; (6) appreciate supply chain products that may be part of unaligned global research and development programmes; and (7) do final integration only when there is something to integrate. Central to the argument is the idea that on such complex projects, the client cannot outsource systems integration and thus needs to recognise they retain accountability, though roles and responsibilities can be assigned to the delivery partner, supply chain, chief engineer and/or contracted systems integration firm. A key question for the client at the outset is how to distribute interface management and systems integration responsibilities while retaining accountability and oversight. Rather than managing through contracts, budgets and schedules, the authors suggest a changed approach with priority given to managing integration, and contracts, budgets and schedules that support and incentivise this.
Contributions to the taxonomy and biogeography of the genus Dichagyris (subg. Dichagyris) Lederer, 1867 (Lepidoptera, Noctuidae, Noctuinae)
Authors: Varga Zoltán , Ronkay Gábor , Ronkay László
Published: November 2021

The taxonomically important characters and subgeneric subdivision of Dichagyris are presented with several historical and nomenclatural considerations. Subdivision of D. vallesiaca is revised based on the type material of the known subspecies. The D. psammochroa group is revised, with description of a new species, D. kurbatskyi from Kazakhstan, and one new subspecies, D. psammochroa kopetdaghimena from the Kopet-Dagh massif. The D. taftana group is revised, with the description of a new species (D. guentereberti from Afghanistan) and two new subspecies (D. taftana elborsasta and D. taftana safavida, from different areas of Iran). The eastern sister species of D. humilis, D. hypotacta from Afghanistan and Pakistan, is described. Major phylogenetic clades of Dichagyris s. str. are associated to western Palaearctic and/or Central Asiatic mountainous regions. Core areas of allopatric speciation of Dichagyris s. str. are discussed with taxonomic considerations and outlook on the subgenera Yigoga and Albocosta, as well.
Catalytic Hydrogenation of Sorbic Acid using Pyrazolyl Palladium(II) and Nickel(II) Complexes as Precatalysts
Authors: Olaoye Oluwasegun E. , Oyetunji Olayinka , Makhubela Banothile C.E. , Muyaneza Apollinaire , Kumar Gopendra , Darkwa James
Published: November 2021

ABSTRACT We have prepared several pyrazolyl palladium and nickel complexes ([(L1)PdCl2](1), [(L2) PdCl2](2), [(L3) PdCl2](3), [(L1) NiBr2](4), [(L2) NiBr2](5) and [(L3) NiBr2](6)) by reacting 3,5-dimethyMH-pyrazole (L1), 3,5-di-ferf-butyl-1ZÏ-pyrazole (L2) and 5-ferrocenyl-1Zf-pyrazole(L3) with [PdCl2(NCMe)2] or [NiBr2(DME)] to afford mononuclear palladium and nickel complexes, respectively. These complexes were then investigated as pre-catalysts in the hydrogenation of 2,4-hexadienoic acid (sorbic acid). The active catalysts from these complexes demonstrate significant activities under mild experimental conditions. Additionally, the active catalysts show that the hydrogenation of sorbic acid proceeds in a sequential manner, where the less hindered C=C bond (4-hexenoic acid) is preferentially reduced over the more hindered C=C bond (2-hexenoic acid). Keywords: Pyrazolyl catalysts, sorbic acid, hydrogenation, selectivity.
Pre-school teachers’ knowledge and needs related to noticing gifted children and the enrichment model
Authors: DERELİ Esra , DELİ Hatice
Published: November 2021

The main purpose in the study was to determine the knowledge and needs of pre-school teachers related to gifted children and the enrichment model. The study employs one of the qualitative research methods. The study group of the current research is comprised of 30 pre-school teachers selected by using the snowball sampling method from different regions of Turkey which ensures maximum variation. The data of the study were collected through semi-structure interviews. Semi-structured interviews were conducted with teachers either face-to-face or online. The collected data were analysed inductively using the content analysis method in the NVivo 12 program. As a result of the analyses, it was found that the pre-school teachers' knowledge about noticing gifted children and enrichment practices are limited. In this study it is determined that pre-school teachers have sufficient knowledge and skills for noticing gifted children, taking into account the developmental characteristics of gifted children, but they do not take into account other features. It was concluded that the pre-school teachers' shortcomings that should be addressed in relation to noticing are lack of knowledge, the lack of information about different family structures and crowded classrooms. In addition, as a result of qualitative data analysis, it was found that the needs of the teachers are to get acquainted, support and guide children. Teachers also stated that their needs for enrichment practices are knowledge, equipment, less crowded classrooms, and financial support. According to the results of the research, it can be said that preschool teachers need information about identifying, supporting, and enriching gifted children.
Impact of School Culture on School Effectiveness in Government Schools in Maldives
Authors: ISMAİL Mamdooha , KHATİBİ Ali , AZAM S. M. Ferdous
Published: November 2021

School culture is considered to be a system of meanings that influence every aspect of the school including school effectiveness. The aim of this study is to examine the impact of school culture on school effectiveness in government schools in Maldives. A quantitative approach using a survey design was adopted for the study. In order to achieve the research objective, a sample of 359 teachers was selected from government schools in the capital city, Malé through stratified random sampling. In the study, data were collected with scales related to two different variables, school culture and school effectiveness. Descriptive and inferential statistics were used to analyse the data using SPSS-25 and AMOS-25. The study revealed that the level of school culture and school effectiveness were high in Maldivian schools. According to the results, school culture had a significant influence on school effectiveness. The findings suggest that a positive and collaborative school culture enhances school effectiveness. In addition, it reflects the importance of creating a positive and collaborative school culture that empowers all school members to work towards common goals, which improves the effectiveness of the school. The findings confirm the current proposition that a positive school culture is instrumental in achieving school effectiveness, adding clarity to the understanding of school culture as a critical component of an effective school
The Effect of Multicultural Education on Preservice Teachers’ Attitude and Efficacy: Testing Bank’s Content Integration Dimension
Authors: AKCAOĞLU Mustafa Öztürk , ARSAL Zeki
Published: November 2021

The sudden increase in diversity in the public schools has caught teacher preparation institutions unprepared. The situation has led to a need to develop instructional interventions to help pre-service teachers get ready for a new context that they will be facing for the first time. Multicultural education can be of great importance to address the issues related to diversities. In order to create multicultural environments at schools, all the actors of the educational area need skills to better communicate with students from different cultures. One of the most important topics during the teacher training process is equipping the pre-service teachers with the necessary skills, attitudes, and information to teach in multicultural environments. To this end, designing a teacher-training curriculum to raise pre-service teachers' multicultural efficacy levels is essential. In this quasi-experimental study, we investigated the effects of a 10-week multicultural education intervention carried out through Bank’s content integration process. Fifty-two pre-service teachers enrolled at the department of social sciences in a state university in Turkey participated in the study. Findings indicated a statistically significant difference between the pre-test and post-test scores of the pre-service teachers in the experimental group, who attended the 10-week course, in terms of their multicultural attitude and efficacy. It was concluded that the multicultural education intervention, carried out according to Bank's content integration dimension, significantly affected pre-service teachers' multicultural attitude and efficacy
The Effect of Technology Assisted Teaching on Success in Mathematics and Geometry: A Meta-Analysis Study
Authors: ÇAVUŞ Hayati , DENİZ Serap
Published: November 2021

In this research, experimental studies comparing the effectiveness of technology-assisted teaching to traditional method up on mathematical and geometry success are combined through meta-analytical review method. For that purpose, articles, master’s, and doctoral theses carried out between the years 2000-2016 in Turkey are examined. 98 studies on academic achievement meet the specified criteria and thus were included in the meta-analysis and the effect size between variables has been demonstrated by assembling numerically the findings of these studies. CMA 2.0, MS Office Excel 2010 programs were used in the analysis of the data. As a result of the calculations of meta-analysis, the effect size of the technology-assisted teaching is calculated as 0,758 on students' mathematics achievement and as 1,136 on students' geometry achievement. This study is based on the classification system according to Cohen (1988). The effect sizes attained represent a medium effect size for mathematics academic achievement and a very large size for geometry achievement. Those both values are regarded as medium effect size according to Cohen (1988). In addition, the comparative effect sizes of the studies included in the study were calculated according to techniques of implementation, level of education and learning fields. At the end of the research, it is found that according to the traditional learning method of technology-assisted mathematic and geometry teaching is more effective in terms of achievement. It is concluded that the effect size on the academic achievement of mathematic and geometry does not differ according to time of implementation, level of education, and learning fields
Additions to the vascular flora of the Rocky Fork Tract, Tennessee, U.S.A.
Authors: Levy Foster , Donaldson James T.
Published: November 2021

An examination of previously unaccessioned and overlooked specimens has added 16 species to the vascular flora of the 3800 ha Rocky Fork Tract in northeastern Tennessee. One species was deleted because of a prior misidentification for a net gain of 15 species and a total of 764 species. One species, Solidago lancifolia (Torr. ex A. Gray) Chapm., is listed as Endangered in Tennessee. All additions except two, represent county records.
The Lomatium grayi complex (Apiaceae) of the western United States: a taxonomic revision based on morphometric, essential oil composition, and larva-host coevolution studies
Authors: Alexander Jason Andrew , Whaley Wayne , Blain Natalie
Published: November 2021

The Lomatium grayi complex is morphologically diverse across it range. The type species of this complex, Lomatium grayi s.s., has been found to not be a host of the larvae of Papilio indra, while the other three morphotypes are larval-hosts. A fifteen character, morphometric analysis was conducted on 390 herbarium specimens from throughout the range of this species. PCA, MANOVA, CDA, and Tukey tests revealed that the majority of the characters in this dataset were significantly different between four regional morphotypes. As a result of the morphometric analysis, the morphotypes are herein proposed as four species. Two new species are proposed for populations of L. grayi in the Pacific Northwest. Lomatium papilioniferum is proposed for plants in California, western Idaho, northern Nevada, Oregon, and Washington. Lomatium klickitatense is proposed for populations of robust plants from western Klickitat County, Washington, and northern Hood River County, Oregon. Lomatium grayi var. depauperatum is elevated to a species. This leaves no infraspecific taxa within L. grayi s.s. A presence/absence phenetic analysis of combined essential oil data was inconclusive regarding the composition of L. grayi s.s., which was found to be more similar to Lomatium klickitatense and Lomatium depauperatum than other species of Lomatium. Taxonomic treatments for each of the four species in this complex are provided. A key to these species and the multiple species that have been commonly mistaken for L. grayi is also included.
A new species of Potamogeton (Potamogetonaceae) from the unique habitat: Montezuma Well, Arizona, U.S.A.
Authors: Ricketson Jon M. , Ricketson Glenda M. , Greenawalt Tina L.
Published: November 2021

Montezuma Well is a geothermal limnocrene spring within Montezuma Castle National Monument, Yavapai County, Arizona, U.S.A. The Well’s unusual geological qualities, water chemistry, and a history of aquatic plant collecting are discussed. Evidence to support the fact that a unique species of Potamogeton has likely grown in this location for thousands of years and is now recognized as the seventh apparent autochthonous endemic species from this small area is presented. Although this new species shares a few superficial characters with P. illinoensis Morong, it is easily distinguished by its massive height (7–8 m tall), lack of floating leaves, long acuminate leaf apices of its submerged leaves, and bright translucent green leaf color. A complete description with drawing and photographs is provided.
Styrax paulhousei (Styracaceae), a new species from Honduras
Authors: Fritsch Peter W. , Whitefoord Caroline , Kelly Daniel L.
Published: November 2021

Styrax paulhousei, a new species of Styrax L. series Valvatae Perkins from northwestern Honduras, is described and illustrated. It is similar to S. ramirezii Greenm. but differs in having fewer secondary leaf veins and larger corollas. The species is endemic to the Sierra del Merendón in the Department of Cortés and is categorized as vulnerable as based on IUCN Red List criteria. The discovery of this species brings the number of Styrax species native in Honduras to six.
Phaseolus angucianae (Leguminosae: Phaseoleae), a new bean species from Fila Cruces of southeastern Costa Rica
Authors: Debouck D.G. , Araya-Villalobos R. , Chaves-Barrantes N.
Published: November 2021

A new wild bean found in the mountainous range “Fila Cruces” of southeastern Costa Rica is described. To date, only four populations are known from different sites on the slopes of Cerro Anguciana and “Fila Cruces” where it seems to be endemic. The differences (slender curved racemes, small oval acuminate primary and pedicelar bracts, lilac inner face of standard, white wings) are presented with closely related species such as P. hygrophilus and P. oligospermus of the section Brevilegumeni to which it may belong.
Classification of plant communities in Sierra Rica, Manuel Benavides, Chihuahua, Mexico
Authors: Juárez-Pérez Alicia , Melgoza-Castillo Alicia , Pinedo-Álvarez Carmelo , Estrada-Castillón Eduardo
Published: November 2021

Sierra Rica is a mountain island located in the plains of the northeastern region of the Chihuahua Desert and has a diversity of vegetation patterns. To study this patterns the vegetation was characterized using GIS and cluster analysis, which identified five community types: pine forest (780 ha), oak forest (1640 ha), grassland (550 ha), desert scrub (866 ha), and rosetophyllous desert scrubland (628 ha). By the use of TWINSPAN software, four main vegetation groups containing 10 main plant associations were identified: (1) Pinus-Quercus forest, (2) grassland, (3) pine forest, (4) Rhus-Juniperus, (5) Pinus-Quercus and xeric species, (6) grassland-desert scrub, (7) desert microphyll scrub, (8) Quercus-Aloysia-Bouteloua association, (9) Acacia constricta scrubland, and (10) Larrea tridentata scrubland. The association among groups and species was significant (P < 0.0001). The subsequent analysis shows a high dependence among species inside the main groups and independence between groups.
Miconia Elaeagnoides: A morphologically distinctive species within the Caribbean clade of Miconia (Melastomataceae: Miconieae)
Authors: Judd Walter S. , Majure Lucas C.
Published: November 2021

Miconia elaeagnoides, a morphologically distinctive species traditionally circumscribed within Tetrazygia, is provided with an updated description and nomenclatural assessment, along with a consideration of phenology, distribution and habitat, and citation of specimens examined. The species exhibits an unusual combination of characters, e.g., flowers with relatively long pedicels (and so well separated) even though their pseudopedicels are nearly sessile, an irregularly opening calyx-calyptra, four obovate petals, a 4-loculate, strongly lobed ovary, and fruit with a constricted calyx. Miconia elaeagnoides is resolved within the Caribbean clade of Miconia, and within this species-rich group it is possibly related to the species of the M. longicollis clade.
APLICABILIDADE DA LÓGICA NEBULOSA NO PROCESSO DE DESLIGNIFICAÇÃO DO CAPIM-ELEFANTE NO PRÉ-TRATAMENTO COM NAOH
Authors: Zullo Godinho Emmanuel , De Lima Caneppele Fernando , Vagner Gasparotto Helio
Published: November 2021

O processo de pré-tratamento na biomassa é fundamental para obter altos rendimentos na produção de bioetanol. Por isso, a otimização é fundamental para reduções de custos e aumento na rentabilidade financeira. Em virtude disso, objetivou desenvolver um sistema baseado em regras difusas, onde otimizou o processo de pré-tratamento com NaOH no capim-elefante. O modelo fuzzy foi desenvolvido utilizando duas variáveis de entrada e uma de saída, sendo concentração, temperatura e lignina, respectivamente. A análise dos efeitos da concentração e temperatura foi realizada por superfícies tridimensionais e mapas de contorno da variável de saída. Verificou-se que as variáveis relacionadas à lignina são amplamente afetadas por uma baixa dosagem da concentração do NaOH e com uma temperatura média a baixa. Em geral, conclui-se que a região entre 0,4 a 0,6% de concentração de NaOH, combinado com uma temperatura entre 80,5 a 85,0°C, verificam-se as maiores e melhores respostas das variáveis biométricas estudadas.
Positive impact of vibration on heat transfer in twisted tape inserted heat exchanger
Authors: ARASAVELLI Shanmukh Sudhir , KONIJETI Ramakrishna , BUDDA Govinda Rao
Published: November 2021

This paper describes experimental investigations on convective heat transfer in counter flow double pipe heat exchanger under transverse vibration for single-phase flow with twisted tape insert in the inner tube. Experiments were conducted on twisted tape inserted counter flow double pipe heat exchanger under vibration for twist ratio from 7 to 17, amplitude from 23 to 69 mm, frequency from 20 to 100 Hz and Reynolds number (Re) changing from 10710 to 21420. A maximum gain of 91% in Nusselt number (Nu) was obtained at 40 Hz frequency and 69 mm amplitude for twist ratio of 7 and Re of 10710. The maximum value of performance evaluation criteria with compound enhancement technique on double pipe heat exchanger reached 1.38 in turbulent flow conditions. Empirical correlations for Nu were developed and predicted values were found to be within ± 9% of experimental values for both frequency ranges.
Sensory analysis of olive oil
Authors: Villa Fabíola , Silva Daniel Fernandes
Published: November 2021

The sensory analysis of olive oil constitutes a fundamental tool in determining the commercial grade of oil. To obtain this certification, the oil must pass through the analysis of a group with 8 to 12 people, trained and qualified by regulatory bodies, called ‘panel test’, which will feature the organoleptic properties of the oil, setting its commercial classification. Sensory analysis has significant importance to judge the final product quality. These tests are performed in specific laboratories, other organizations, or if the manufacturer sells large amounts of oil in committees within the company. Olive oil, according to Brazilian standard, can be classified in a virgin olive oil, olive oil, refined olive oil and olive pomace. The tests performed in oil samples are visual, olfactory and gustatory. The aftertaste of the process is the gustatory-olfactory sensation left by the oil in the mouth, after being swallowed or spat out. This exercise facilitates the perception of the characteristics of a particular oil, there may be positive and negative aftertaste. The tasting room must contain accessories, oil heater, tasting booths, site sample preparation and cleaning materials and room to open ‘panel’ training. This review aimed to present how should be carried a sensory analysis of olive oil, the place to carry out this analysis and the main defects found in an olive oil quality.
Deposition of sprayed drops in soybean in function of sowing spacing
Authors: Viegas Neto Antonio Luiz , Souza Cristiano Márcio Alves de , Degrande Paulo Eduardo , Lima Júnior Izidro dos Santos
Published: November 2021

To reach all parts of the plants can be a difficult achievement faced by the drops in several crops. Strategies in crop management such as an increment in the plant spacing can contribute to the spray application's success. This study aimed to evaluate the droplets deposition in soybean, using three different spray nozzles and application rate, in two soybean rows spacing. The experimental design used was the randomized blocks, with treatments arranged in a split-plot scheme. The plots were the interrow spacing (0.45 and 0.76 m), the subplots were the spray nozzles (JA-2 and Magno 11002 BD), and the sub-subplots were the application rate (120, 200 and 280 L ha-1). Droplets coverage was evaluated in the upper, middle and lower thirds of soybean plants. Water-sensitive papers were installed in the adaxial part of plant leaves to analyze the spray technology and evaluated using E-Sprinkle® software. Spraying was performed in plants at the R5.3 soybean stage. This experiment evaluated the following parameters: the volume median diameter, the density of droplets per cm2, the droplet coverage area, and the droplet percentage less than 150 µm. The increase in the soybean row spacing combined with the spray volume increase provided greater droplet coverage in the middle third in soybean crop. The Magno 11002 BD droplet nozzle provided the higher droplet coverage in the row spacing of 0.76 m. The spray rate of 280 L ha-1 provided the highest density of droplets per cm2 in the lower third and greater coverage in the middle-third.
Influence of soil preparation and planting methods on watermelon productivity and quality
Authors: Andrade Reginaldo Almeida , Souza Fábio Régis de , Nascimento Luan de Oliveira , Brito Rychaellen Silva de , Carvalho Cleverson Agueiro de
Published: November 2021

The productivity and quality of watermelon fruits can be influenced by several factors, edaphic or associated with cultural management, such as, the type and form of soil preparation and planting methods, which can be by direct sowing or through transplanted seedlings. The objective of this work was to evaluate productive characteristics and quality of watermelon fruits grown under different forms of soil preparation and planting methods. The experimental design used was randomized blocks, organized in a 2x3 factorial scheme, containing three replications, with 24 plants per plot. The evaluated factors were two forms of soil preparation and three forms of cultivation. The fruits were harvested when their tendrils showed visible signs of dryness, when their productive and qualitative characteristics were analyzed. The variables analyzed were the number of fruits per plant, fruit mass, transverse and longitudinal circumference of the fruits, total soluble solids (° Brix), total titratable acidity, maturation index (ratio) and total productivity. The planting methods do not alter the productive characteristics and the quality of the watermelon fruits, which proved to be adequate to the standard demanded by the national market. Conventional tillage, with plowing followed by harrowing, increases the number of fruits per plant and total productivity, reaching 30.7 Mg ha-1, a value 35.08% higher than the average for the state of Rondônia and 28.33 % above the national average.
Growth and genetic parameters of progenies of Cordia trichotoma in the juvenile phase
Authors: Almeida Rodolfo Soares de , Assis Guilherme da Silva , Melo Lucas Amaral de , Silva Gabriel Campos Almeida , Resende Eduardo Willian Andrade , Luz Matheus Santos , Resende João Cortes Regadas
Published: November 2021

Increasing the productive potential of native species is a challenge for forest genetic improvement. Progeny tests are efficient tools to determine the reproductive capacity of individuals and to assist with the selection of superior genotypes. Cordia trichotoma (Vell.) Arrab. ex Steud, is a native species of commercial interest due to its high potential for sawn wood. The performance of seedling production from different progenies was the objective of this work. Seeds were collected from 34 matrices selected phenotypically and georeferenced in the region of Lavras - MG. The experiment was conducted in a completely randomized design with 4 replications of 12 plants. Germination after 70 days of sowing, survival and height at 170 days after germination were evaluated. Height and genetic parameters were estimated according to mixed REML / BLUP models using the Selegen software model 82. Progeny 104 (70.8%) was superior in germination and progenies 86 (35.42%), 92 (35.42%) and 111 (43.75%) had the highest survival rates. Height shows high values for the individual additive genetic variation coefficient (49.18%) and genotypic variation coefficient between progenies (24.59%) and moderate values of heritability in the restricted individual sense (0.45) and heritability within progenies (0.38). Due to high values for the coefficient of genotypic variation and moderate values of heritability, there is a potential for height improvements. Progenies 104 stand out in the germination and the progenies 86, 92 and 111 in the seedlings survival). Regarding height, progeny 95 is the only one that stands out negatively.
Caracterização de pequenas propriedades produtoras de suínos em uma região metropolitana do Brasil
Authors: Eliane Garcia Horwat Darleny , Teixeira Poltronieri Paula , Cristina Ribeiro Dambroski Nack Daiane , Sperotto Brum Juliana
Published: November 2021

Até o momento, não houve nenhum trabalho na literatura a respeito da suinocultura na Região Metropolitana de Curitiba, desta forma, este trabalho tem como objetivo caracterizar a produção de suínos nesta região. Os resultados foram obtidos por meio da aplicação de entrevista semiestruturada. Participaram da pesquisa 62 suinocultores distribuídos em 14 municípios da região. A maioria das propriedades avaliadas (51,6%) possuía até 10 hectares, 80,6% utilizava apenas mão de obra familiar e todas as unidades produtoras analisadas combinavam a suinocultura com outras atividades. Do total, 52,5% possuíam até 10 suínos, 80,6% praticavam a produção em ciclo completo e 45,2% mantinham os animais confinados em baias. Na alimentação dos suínos, foi mais frequentemente relatado o uso de milho e sobras de comida, que eram obtidos na própria propriedade. Observou-se que a produção de suínos na Região Metropolitana de Curitiba é uma atividade que desempenha um papel econômico e social para os produtores de pequena escala. Concluiu-se que os locais avaliados, em geral, desenvolvem a suinocultura como atividade de subsistência, mas existem diferenças entre eles, demonstrando que cada um possui características próprias.
Quality of self-propelled sprayers through periodic inspection
Authors: Luiz Viegas Neto Antonio , Márcio Alves de Souza Cristiano , Marques Miliati Matheus , Dos Santos Lima Júnior Izidro
Published: November 2021

The inspection of agricultural sprayers is a vital tool for the increment of quality of spray technology for phytosanitary products. The objective of this work was to evaluate the performance conditions of self-propelled sprayers on-farm, using the periodical inspection methodology for sprays and analyzing the climatic conditions during the spraying. The evaluations were carried on farms visited randomly. A questionnaire was filled out by the operator or farmers and the inspection itself of the sprayers. The items evaluated were the condition and location of hoses, presence of leaks, monitor performance, spacing between nozzles, spray nozzles, in-line filter, primary filter, the performance of anti-dripping gauges, and limiting environmental conditions. Most interviewed operators and farmers did not know the methodology for inspecting agricultural sprayers, demonstrating the need to create specific training programs in the region. Self-propelled sprayers have a few technical problems when they were new, however, spraying beyond the ideal weather conditions can reduce the spraying quality.
PREGELATINIZED RICE BRAN FLOUR AS STABILIZER FOR GUAVA NECTAR
Authors: Doring Krumreich Fernanda , Paula Antunes Corrêa Ana , Beatriz Roll Zimmer Tailize , Costa Nachtigal Jair , Carlos Zambiazi Rui
Published: November 2021

Rice bran flour is a byproduct of rice processing and can be used as food. The objective of the current study was to use pregelatinized rice bran flour along with hydrocolloids to stabilize guava nectar, as well as to evaluate the stability of bioactive compounds during a storage period of 180 days. For this purpose, the guava fruits were processed in the form of pulp, following the elaboration of the nectars. Four formulations were prepared: one control (pulp, water, and sugar) and three by the addition of xanthan, guar gum, and pregelatinized rice flour. The sedimentation stability, the content of bioactive compounds, and the physicochemical parameters were evaluated at every 45 days of storage. The formulations with guar and pregelatinized rice bran flour gave better results than the others for all the evaluated parameters, indicating that they could be a good option for stabilization of the guava nectar. Moreover, the rice flour seems to be a cost-effective option and is easy to obtain in contrast to the other commonly used hydrocolloids that are generally used in food industry.
Medication omissions in the first 48 hours after admission: failure in prescribed medicines reaching in-patients in paediatrics wards at the University Teaching Hospitals, Children’s Hospital in Lusaka, Zambia
Authors: Kampamba Martin , Mulolo Steven , Phiri Margaret , Chulu Martha Chibale , Mufwambi Webrod , Mudenda Steward , Banda Michelo , Hikaambo Christabel Nang’andu
Published: November 2021

Background: The first few days of in-patient care are possibly the most significant in a patient’s recovery and any omitted medications during this period may harm the patient or increase their hospital length of stay. Therefore, our study aimed at assessing the frequency of medication administration omission errors and their reasons for the omission in the paediatric wards after admission at University Teaching Children’s Hospital.Methods: This was a descriptive study in which 259 patient files and drug charts were reviewed. Admission prescription charts were studied in detail over a period of four weeks and all drugs prescribed but then not given in the first 48 hours were recorded as omitted medications, along with the reason given for their omission.Results: From the 259 drug charts, a total of 1598 doses of drugs were ordered within 48 hours of admission. However, from this, only a total of 1132 doses were administered with the remaining 466 doses omitted, which accounted for a frequency of 29.2%. When the frequency of medication omission errors was compared, parenteral drugs (70.8% vs. 25.3%, [p=0.0001]), afternoon shift (48.5% vs. 15.8%, [p=0.0001]), and anti-infective medications (69.1% vs. 39.4%, [p=0.0001]) were found to be the most frequently omitted medications. There were also considerably more medication omissions in patients prescribed with more medications (median number: 4, I QR [2, 6] vs. median number: 2, IQR [2, 4], [p=0. 0.001]). The most common reason for the omission was medication unavailability (89.3%), followed by work overload (71.4%), and the patient is off the ward (71.4%).Conclusions: This study revealed that medication omissions are a continuing problem and this may result in increased morbidity and mortality rates. There is a need to put in place specific strategies to reduce this problem.
Efficacy of montelukast in the management of COVID-19: double blind randomized placebo controlled trial
Authors: Kumar Vijay , Ganapule Avinash A. , Supriya Sushmita , Bhushan Divendu , Lohani Pallavi , Pandey Sanjay , Sahoo B. Hilbert , Kumar Anjani , Singh Shruti , Kumar Ramesh
Published: November 2021

Background: Objective of the study was to determine the efficacy of montelukast in reducing the severity of COVID-19 symptoms using a double blinded randomized controlled trial.Methods: Parallel, double-blinded randomized controlled trial (RCT) with placebo as comparison to montelukast. All patients above the age of 14 years both males and females, admitted with a diagnosis of mild or moderate COVID-19 (on the basis of a positive reverse transcriptase polymerase chain reaction (RT-PCR) report) at our facility during the study period from 01 September 2020-31 January 2021) and excluding those having adverse reaction to montelukast or those not willing to participate, and pregnant and lactating females. Patients in the intervention arm were given tablet montelukast 10 mg OD HS from the day of admission for 10 days. The patients in the placebo group were given an identical appearing placebo at bedtime for 10 days from the day of admission. The rest of the treatment was given as per the standard operating procedure (SOP) of the institute with minor adjustments as per the treating team’s judgement. Primary outcome was progression of the disease to severe grade and secondary outcomes were discharge on or before day 10 from admission, admission to ICU, need for mechanical ventilation and in-hospital mortality.Results: A total of 94 patients were enrolled for the study. 90 patients, 45 in each arm were included in the final analysis. The baseline characteristics of the two arms including age, sex, comorbidities, severity at admission and treatment given apart from montelukast or placebo, were comparable with respect to these variables. This study did not find any improvement in primary outcome of progression to severe disease and secondary outcomes of intensive care unit (ICU) admission, mortality or need of mechanical ventilation, discharge on or by day 10 with the use of montelukast as compared to placebo in mild to moderate cases of COVID-19.Conclusions: There was no difference in primary or secondary outcomes with the use of Montelukast compared to placebo.
Adrenal insufficiency resulting from immunotherapy: a rare but life-threatening side effect
Authors: Shaharudin Muhammad Yusuf , Zulkhairi Mohammad
Published: November 2021

A 73-year-old male whom suffers from stage 4 adeno-squamous lung carcinoma with high programmed death-ligand 1 (PD-L1 immunohistochemistry-tumor proportion score (TPS)>50 began his treatment with a type of immune checkpoint inhibitors (ICI) therapy. After 8th cycle of treatment, patient experiences vague symptoms of fever, lethargy and drowsy. Initial working diagnosis was infection and empirical treatment was initiated. Subsequently as patient’s condition did not improve despite appropriate antibiotics, other diagnosis was considered which include adrenal insufficiency and this confirms after checking cortisol level. Hydrocortisone was started promptly and patient clinical condition improved. Decision was to stop ICI treatment interim. Consideration to re-challenge again with ICI may be considered once patient is more fit in the future. Adrenal insufficiency following ICI treatments are rare and misdiagnosed due to its non-specific symptoms. Nonetheless, it comes with high morbidity and mortality. Hence, we wanted to emphasize more on this condition as more elderly patients whom suffers from various type of cancers will be exposed towards ICI treatment.
A case report on penicillin/co-trimoxazole induced Jarisch Herxheimer reaction in secondary syphilis with human immunodeficiency virus
Authors: Narayanan Suruthi Lakshmi , Ahammed Afsal , Krishnamurthy Arun Chander Yadav
Published: November 2021

The Jarisch-Herxheimer reaction (JHR) typically occurs after the initiation of antibiotic treatment in syphilis. Although JHR was identified and looked at over many years, the prevention and management of JHR remain unclear. Previous reports have described the occurrence of JHR due to antibiotic treatment in syphilis, we presented a case of a young man with recurrence of JHR in syphilis, first due to penicillin which later was worsened due to co-trimoxazole.
Conspiracy and Autoimmune Suicide: September 11, 2001 Twenty Years Later
Authors: Kuyundzhich Dragan
Published: November 2021

The article analyzes the political and psychological foundations of "conspiracy theories" in the mass consciousness on the example of interpretations of the terrorist attack on the World Trade Center in New York on September 11, 2001. The prerequisites and reasons for the emergence of "9-11" conspiratorial theories in American and global politics in the 1990s and the early 2000s, are considered. In this context, the article examines the ideas of Jacques Derrida that formed the basis of his book "Philosophy in the Age of Terror"; in particular, ршы idea of a specific phenomenon, the so-called "autoimmune suicide".
MPPT for Photovoltaic System Using Adaptive Fuzzy Backstepping Sliding Mode Control
Authors: Hadjira Attoui , Khalissa Behih , Ziyad Bouchama , Nadjat Ziyad
Published: November 2021

This paper presents an intelligent monitoring control strategy for a maximum power point tracking (MPPT) in photovoltaic (PV) system applications. The design of the proposed nonlinear adaptive control law (AFBSMC) is formulated based on adaptive fuzzy systems, backstepping approach and sliding mode technique to maximize the power output of a PV system under various sets of conditions and parameters variation. Unlike many conventional controllers, the main contribution of the present paper provides a soften control law which useful to handle parameters variations due to the different operating conditions occurring on the PV system and makes the controller easy to implement. This aim is achieved using fuzzy systems in an adaptive scheme to approximate the switching control function of the global control law while backstepping sliding mode control compensates uncertainties and external disturbances. The analytical stability proof of the closed-loop system is corroborated via Lyapunov synthesis while numerical simulations of different operating conditions of a PV system is conducted to validate the effectiveness of the proposed approach.
Rynek kryptowalut i tokenów z perspektywy inwestycyjnej
Authors: Włosik Katarzyna
Published: November 2021

Stworzenie bitcoina, powstanie kolejnych kryptowalut i innych rodzajów tokenów oraz pojawienie się pośredników umożliwiających obrót nimi dały początek nowemu rynkowi. Jest on wykorzystywany w celach inwestycyjnych i podlega dynamicznemu rozwojowi. Architektura rynku kryptowalut i pozostałych tokenów staje się coraz bardziej złożona, a on sam pozostaje nadal nie do końca rozpoznany. Istnieje więc potrzeba spojrzenia na niego z wielu perspektyw, określenia ogólnych zasad funkcjonowania i pogłębienia zrozumienia jego działania, do czego przyczyniają się rozważania zawarte w tej monografii. Co istotne, przedstawione treści wskazują zarówno zalety, jak i mankamenty analizowanego rynku. Czytelnik dowie się z książki: czym są kryptowaluty i pozostałe tokeny; czy kryptowaluty i pozostałe tokeny stanowią nową klasę aktywów i czy są kolejnym rodzajem inwestycji alternatywnych; w jaki sposób funkcjonuje rynek kryptowalut i pozostałych tokenów; jakimi cechami charakteryzuje się rynek kryptowalut i pozostałych tokenów i jakie jest znaczenie tych cech dla jego uczestników i instytucji regulacyjnych. Książka stanowi interesującą lekturę dla naukowców i studentów chcących zająć się tematyką kryptowalut, pozostałych tokenów oraz tworzonego przez nie rynku. Może być podstawą do dalszych analiz naukowych czy wsparciem dydaktyki z zakresu finansów cyfrowych. Zainteresuje również praktyków rynkowych, osoby współtworzące regulacje rynku finansowego, a także pasjonatów inwestycji i innowacji finansowych.