bluuebunny/crossref_metadata_2025 huggingface dataset:
Croissance et production des peuplements d’Acacia mangiun d’âges différents sur le sol sableux du plateau de Batéké/RD Congo
Authors: Polycarpe Mungyeko Mayola Maximain , Lumpungu Kabamba Christophe , Aloni Komanda Jules
Published: May 2023

La présente étude visait de caractériser les peuplements d’Acacia mangium qui étaient restés en place après la récolte du manioc dans un système agro forestier au village Ibi au plateau de Batéké dans le but d’évaluer leur contribution dans l’offre du bois-énergie aux ménages, des cendres pour l’agriculture et dans la séquestration de carbone pour la lutte contre les gaz à effet de serre, responsables du changement climatique. Cette évaluation, qui avait été menée sur des peuplements d’âges différents (5 âges) : 10, 23, 34, 46 et 84 mois, avait porté sur les paramètres de croissance, du nombre et de types d’espèces dans le sous-bois, ainsi que sur les valeurs en énergie, en cendre et en carbone séquestré. Les résultats ont montré que tous les paramètres étaient influencés par l’âge du peuplement. La croissance en hauteur était de 2 m avec un volume de 1,1m3 à 10 mois, puis elle était montée à 23,2 m de haut et 322,2 m3. ha-1 de volume à 84 mois. La production de la litière était de 0,13 Mg. ha-1 à 10 mois contre 24,9 Mg. ha-1 à 84 mois. Le nombre d’espèce de sous-bois était de 7 à 0 mois (lors de la transplantation) contre zéro à 84 mois, alors que la séquestration de carbone était de 11,17 contre 535,6 tonnes de CO2. ha-1 à 84 mois. L’obtention de l’énergie pour les ménages et de la cendre pour l’agriculture, qui était aussi fonction de l’âge du peuplement, ne pouvait se faire qu’avec le renoncement d’une partie de la séquestration de carbone.
A ABRANGÊNCIA DAS SÉRIES TELEVISIVAS NO ENSINO DE CIÊNCIAS E/OU BIOLOGIA: UMA REVISÃO SISTEMÁTICA DA LITERATURA
Authors: Grossklaus Simone Terezinha , Lubyi Aline , Da Silva Diovana Aparecida Carvalho , De Moraes Bruna Gibowski , Nakalski Eluiza , Borille Josi Mariano , Machado Camila Juraszeck , Silveira Rosemari Monteiro Castilho Foggiatto
Published: May 2023

Cada vez mais aumenta a busca por estratégias didático-pedagógicas que ultrapassem ou minimizem as dificuldades enfrentadas no processo de ensino-aprendizagem.  Nesse tocante, além de estratégia alternativa para a mediação didático-pedagógica, as Tecnologias Digitais de Informação e Comunicação devem ser vistas e ressignificadas como recursos didáticos. Além do que, se deve ter um olhar atento para a Alfabetização Científica e Tecnológica tanto dos professores quanto dos estudantes, que demandam por olhares mais críticos e atentos, principalmente em decorrência das novas relações que ocorrem inteiramente mediadas por essas tecnologias. Esta revisão sistemática da literatura teve como objetivo identificar de que forma as séries televisivas têm sido utilizadas como subsídio para o ensino de Ciências e/ou Biologia. A pesquisa abrangeu a busca por artigos científicos, dissertações e teses associados nas bases de dados Biblioteca Digital Brasileira de Teses e Dissertações, Catálogo de Teses e Dissertações da CAPES e Google Acadêmico. Os termos de pesquisa foram: Série Televisiva, Série de TV, Série de Streaming, Narrativa Seriada, Ensino de Ciências e Ensino de Biologia. Os resultados evidenciaram que são escassos os estudos que relacionam o ensino de Ciências e/ou Biologia com as séries televisivas. Das quatro pesquisas encontradas, um dos trabalhos analisa veementemente a produção midiática sem, no entanto, aplicar o recurso em sala de aula; outro, faz a análise da série enquanto elemento de ensino, traz sugestões de estratégias a partir das análises, porém sem fazer a aplicação do recurso; enquanto que os demais, tanto analisaram quanto aplicaram tal recurso no ambiente escolar. Diante da escassez de trabalhos encontrados, necessita-se que sejam ampliadas as investigações que relacionam as séries televisivas e o ensino de Ciências e/ou Biologia, com intuito de fomentar o potencial dessa abordagem nos diferentes espaços formativos.
CIÊNCIA E TECNOLOGIA: ENFRENTAR AS INCERTEZAS A PARTIR DE VALORES ÉTICOS
Authors: Hanshkov Viviane
Published: May 2023

Este artigo tem como objetivo refletir sobre as incertezas presentes no desenvolvimento científico e tecnológico sob a perspectiva da ética. Por meio de uma pesquisa bibliográfica, de caráter analítico-interpretativo, buscou-se responder qual a importância dos valores éticos para enfrentar as incertezas presentes na ciência e na tecnologia tendo em vista a sobrevivência sustentável da sociedade. Como resultado, verificou-se que não há certeza em nenhum aspecto da ciência e da tecnologia e, diante de incertezas, a ética e a filosofia da ciência contribuem para a compreensão da dimensão ética individual, coletiva e global, em busca de um processo transformador no que concerne aos propósitos da ciência e tecnologia, que favoreça o progresso e a produção do conhecimento necessário e socialmente relevante.
CORRELAÇÃO LINEAR ENTRE FOSFATO E POTÁSSIO EM IGARAPÉS DA BACIA HIDROGRÁFICA DO EDUCANDOS, MANAUS-AM
Authors: Ferreira Paulo Renan Gomes , Matias Angélica Chrystina Cruz , De Albuquerque Sâmia Dourado , De Abreu Aretusa Cetauro , Lages Anderson da Silva , Miranda Sebastião Átila Fonseca , Ferreira Sávio José Filgueiras , Da Silva Márcio Luiz
Published: May 2023

Fósforo (P) e potássio (K) são macronutrientes essenciais às plantas e aos animais. Em ambientes aquáticos contaminados por esgotos domésticos e industriais, esses nutrientes podem causar sérios problemas. O fosfato (P-PO43-), na forma solúvel, representa uma fonte interna de fósforo para o crescimento de algas, e a ingestão de água com excesso de K pode provocar graves efeitos laxantes. Dessa forma, o presente trabalho tem como objetivo avaliar correlação linear entre esses dois parâmetros usando o método de correlação de Pearson (R) em amostras de água coletadas na Bacia Hidrográfica do Educandos (Manaus-AM). Em estudos de monitoramento, esse conhecimento se faz importante para estabelecer as principais variáveis que influenciam nos níveis de contaminação dos igarapés na Bacia Hidrográfica do Educandos.
Management strategy for pink bollworm (Pectinophora gossypiella) in cotton (Gossypium hirsutum) in farmers-participatory mode
Authors: BIRAH AJANTA , KUMAR ANOOP , KHOKHAR M K , SINGH S P , MITKARI A G , VARSHNEY RICHA , NAVIK OMPRAKASH , CHANDER SUBHASH
Published: May 2023

Cotton (Gossypium hirsutum L.) in central India is witnessing increasing infestation of bollworm and sucking pests since 2016. In recent years, pink bollworm, Pectinophora gossypeilla (Saunders) has emerged as a serious problem causing severe damage to cotton in several parts of our country. Farmers rely on chemical pesticides to control pest incidence that adversely affects naturally occurring predators and parasitoids in the crop ecosystems. The study was conducted by ICAR-National Research Centre for Integrated Pest Management, New Delhi during rainy (kharif) season 2018–21 to implement IPM validation trials at Wakhari village of Jalna district, Maharashtra with a view to study the economic viability and feasibility of adaptable IPM technology in farmer participatory mode. IPM implementation significantly reduced the number of insecticidal sprays (49.74%) and increased the cotton yield (28.49%) againstthe farmer’s practice (FP). Benefit to cost ratio was also higher in IPM fields (1.7, 2.4, 2.3 and 3.96) as compared to FP (1.3, 1.5, 1.74 and 2.97) during 2018, 2019, 2020 and 2021, respectively. It was evident that by adopting IPM strategy, pink bollworm in cotton can be successfully managed with minimum application of insecticides along with conservation of natural enemies and higher net return (42.6%) over farmer’s practice. The technology will be helpful in increasing the seed cotton yield and improve quality especially in terms of reduced pesticides contents, thereby improving the socio-economic status of cotton growers of the country.
NUTRIENT UPTAKE AND COWPEA PERFORMANCE FOLLOWING EARLY SEASON MAIZE CULTIVATION UNDER DIFFERENT FERTILIZER TYPES
Authors: Kehinde Adebayo Adeyinka , Titilola Ayoola Olukemi , Bosede Anjorin Folake , Oluremi Ojo Abigail , Esther Oladehinde Tolulpe
Published: May 2023

Background. The complementary application of organic and inorganic fertilizers has been found to meet soil nutrient deficits, enhance soil physical properties and crop yield. Objective. To evaluate the residual effect of initial application of different fertilizer types on cowpea performance and nutrient uptake. Methodology. A field trial was carried out in the late season between September-November, 2015. Initial fertilizer treatments consisted of poultry manure at 5 t ha-1 + urea (100 kg ha-1), cow dung at 5 t ha-1 + urea (100 kg ha-1), Oyo organic (also known as pace setter fertilizer made in Oyo state, Nigeria) at 5 t ha-1 + urea (100 kg ha-1) and control (No fertilizer application). Three cowpea varieties (Ife brown, Modupe and Ife 98-12) were evaluated on residual plots. Treatments were evaluated in Randomized Complete Block Design (RCBD)(r=4).  Data were collected on growth, yield, chlorophyll content as well as post- planting soil nutrient compositions. Results. All the parameters of the cowpea varieties were better performed on residual plots of poultry manure (5 t ha-1) augmented with urea (100 kg ha-1) for the soil nutrient status, plant uptake and crop yield. Similarly, plant grown on soil previously amended with poultry manure + urea had significant higher chlorophyll contents. Highest grain yield of 4.45 t ha-1 was obtained in the residual plots of poultry manure + urea. Conclusion. Application of poultry manure (5 t ha-1) together with urea (100 kg ha-1) had significant effect on optimum yield of cowpea
AGRONOMIC EVALUATION OF TWO PASSION FRUIT GENOTYPES IN CONTAINERS (MEGA-POT) PREDICTED CORRESPONDING PERFORMANCES UNDER FIELD CONDITIONS
Authors: Ndukwe Okorie Okoro , Baiyeri Paul Kayode
Published: May 2023

Background. The evaluation of crop variety in the field involves large expanse of land and could be expensive but container evaluation of crops is thought to complement field evaluation. Objective. To compare the growth and fruit yield of yellow passion fruit in the field and container (mega-pots) as influenced by varying rates of poultry manure with the hypothesis that vines grown in containers could predict the performance of the crop in the field. Methodology. Two yellow passion fruit genotypes (KPF-4 and ‘Conventional’) received varying rates of poultry manure (0, 10, 20, 30, 40 t/ha) in both the field and containers. These were laid out as split plot in randomized complete block design and completely randomized design, replicated four and ten times, respectively in the field and pots. Results. In both field and pot, days to first flowering and fruit dropping were earlier in KPF-4 than ‘Conventional’. Vine girth and number of branches were not significant different (p>0.05) between the genotypes in both field and container. Most of the fruit yield traits obtained from either field or pot experiment did not statistically vary between the genotypes except fruit length and circumference. The application of poultry manure (PM) reduced the days to first flowering but enhanced the growth characteristics of the vines compared to vines that received no manure. Increase in PM rate increased the number of fruits picked per plant. The economic analysis of both studies indicated that net return and return per naira invested increased with increase in PM rates with the peak at 20 t/ha PM application. Implications. Pot studies could be utilized for preliminary evaluation of crops and prediction of field performances. Conclusion. The study revealed that phenology, growth and fruit yield of the two genotypes had relatively similar responses to PM rates in both pot and field studies, yet less inputs were made in the pot study.
WATER REQUIREMENTS OF Dipteryx alata VOGEL SEEDLINGS AT DIFFERENT SOLAR RADIATION LEVELS IN CERRADO-AMAZON TRANSITION
Authors: Borella Daniela R. , Souza Adilson P. , Silva Andréa C. , Pizzatto Mariana , Keffer Josiane F. , Lima Daiane C.
Published: May 2023

Background. Water and energy availability are factors that determine the maintenance, growth and development of plants and, consequently, affect its productivity. knowledge what water requirements of forest species during the initial growth stage under different energy levels are essential for technical and economic planning and the proper management of irrigation in forest nurseries, aiming at the production of healthy seedlings. Objective. The evapotranspiration potential (ETc) and crop coefficients (Kc) of baru plants (Dipteryx alata Vogel) were set at the early plant development stage, at increasing shading (black polyolefin screens) and spectral solar radiation levels (colored polyolefin screens), in order to subsidize irrigation and management projects focused on forest nurseries. Methodology. The experiment was conducted in the Center-Northern region of Mato Grosso State, during the dry season (from June to October 2017), for 125 days. ETc was measured through capillary lysimeters, whereas reference evapotranspiration (ETo) was set through the FAO-56 Penman-Monteith equation - Kc values were defined through the ETc/ETo ratio. Destructive growth analysis was performed 125 days after transplantation in order to determine the morphometric variables of the plants. Results. Increased shading levels decreased ETc, Kc and seedling stem diameter, besides increasing the leaf area. The herein adopted quantitative and spectral shading levels did not affect growth (in height) and dry mass accumulation in different D. alata seedling partitions. Implications. The results obtained allow defining improvements in the management of irrigation of forest nurseries. The adoption of irrigations systems with design errors and/or with water requirements inadequate for the production of forest seedlings may lead to yields lower than the genetic potential of the species, favor the establishment of diseases increased the consumption of nutrients and water. Conclusion.The production of D. alata seedlings depends on the cost-benefit ratio of shading screens and local water availability - production in full sun condition is recommended whenever water is not a limiting factor.
DINÁMICA TEMPORAL DE LA MARCHITEZ DE LA VAINILLA (Vanilla planifolia) ASOCIADA A Fusarium spp., EN TRES SISTEMAS DE PRODUCCIÓN EN PAPANTLA, MÉXICO
Authors: Gonzalez Reyes Hector , Rodríguez Guzmán María Del Pilar , Yáñez Morales María De Jesús , Escalante Estrada José Alberto S.
Published: May 2023

Background. Vanilla wilt disease caused by Fusarium oxsyporum f. sp. vanillae is a major limitant factor in the vanilla crop production in México. Methodology. Temporal dynamics of vanilla wilt was studied under different crop production systems, rustic (RS), traditional (TS) and with orange tree as the tutor plant (OTS) in Papantla, Veracruz. Thirty vanilla plants per orchard were selected; roots and rhizosphere soil per plant were sampled from May to December of 2016, to assess Fusarium spp. incidence and severity in roots and inoculum density in rhizosphere soil. Plant phenology and weather variables were also estimated. Results. Temporal behavior of inoculum density and Fusarium spp. root incidence showed a monomolecular increase in all crop production systems. OTS showed the highest growth rates for ID (r = 0.023 propagules per day) and incidence (r = 0.006 % per day), but the lowest area under the disease progress curve (AUDPC) for severity (529.1 % per month), an intermediate amount for root biomass rate (r = 0.018 g per day) and the highest crop yield (0.6 t ha-1); meanwhile, RS obtained the highest disease severity AUDPC (1267.71 % per month), the lowest root biomass rate (r = 0.011 g per day) ) and zero crop yield. Disease severity in roots decreased their biomass and the crop yield. Greenhouse pathogenicity tests showed that Fusarium oxysporum induced similar wilt and rot disease symptoms in vanilla roots and stems, and foliar yellowing and fall, as those recorded in the crop field, but this not happened with Fusarium solani. Conclusion. Vanilla wilt disease occurred during the whole period of assessment in this study, and it was affected by the type of crop production system and management strategies.
Argemone ochroleuca: (PAPAVERACEAE), ALKALOID POTENTIAL SOURCE FOR AGRICULTURAL AND MEDICINAL USES
Authors: Hernández-Ruiz Jesús , Bernal Julio , Ruiz-Nieto Jorge Eric , Gonzales-Castañeda Jaquelina , Mireles-Arriaga Ana Isabel
Published: May 2023

Background. The genus Argemone contains 24 species, A. ochorleuca is present in national territory and is used in agriculture and traditional medical treatments for various conditions. Results. A. ochorleuca is an herbaceous and/or perennial plant that blooms all year. This plant had the potential as a source of benzyl isoquinoline alkaloids, which are the main bioactive compounds responsible for antibacterial, antifungal properties. However, some of these compounds are associated with toxic effects too. Information about concentrations and parts of the plant it is important for all uses and applications. Implications. The present work summarizes available information on phytochemical and medicinal properties. Conclusion. In A. ochrolecuca, six of the 45 alkaloids reported for the genus Argemone have been studied, dihydro-keleritrin and dihydro-sanguiranine are the most abundant in the seeds and vegetative tissue of the species. The updated information should be useful to guide future research on this plant.

Keywords: Alkaloids; papaveraceae; berberine; sanguinarine.
NITROGEN FERTILIZATION AND Azospirillum brasilense INOCULATION ON Panicum maximum CV. Mombasa
Authors: Gonçalves Priscila Porfírio , Oliveira Lara Caroline Alves de , Oliveira Reginaldo de , Carvalho Marco Antonio Camillo de , Yamashita Oscar Mitsuo , Domingues Samiele Camargo de Oliveira , Oliveira Jean Correia de , Prado Romário Fogaça do
Published: May 2023

Background. Nitrogen fertilization of pastures is considered one of the main limiting factors and that most promote an increase in the production of forage biomass. For this reason, research that evaluates alternative techniques that can complement or supply the demand for N in forage becomes important. Recently, some researches have been studying the action of bacteria like Azospirillum brasilense, and their ability to make symbiotic associations with grasses, fixing atmospheric nitrogen and producing hormones that stimulate the growth of their roots. Objective. The aim of this work was to evaluate the development and production of Panicum maximum cv. Mombasa as a function of nitrogen (N) doses and inoculation with diazotrophic bacteria. Methodology. The experimental design was completely randomized (CRD), in 5 x 2 factorial scheme, in pots with capacity for 10 dm3 of soil, with four replicates. Treatments consisted of the combination of N doses (0, 50, 100, 150, 200 kg ha-1), using urea (45% N) as source, with and without inoculation with Azospirillum brasilense. The parameters evaluated were: SPAD index, leaf dry matter, leaf area, crude protein content (CP), root volume, root dry matter, stem dry matter and leaf/stem ratio. Results. Root volume, CP content, stem dry matter and green color index (SPAD) increased linearly as a function of the N doses. Only leaf/stem ratio and green color index responded to the inoculation with bacteria. Nitrogen fertilization directly contributes to promoting higher yields and fast establishment of the pasture. So, inoculation with Azospirillum brasilense leads to promising results in Panicum maximum cv. Mombasa, improving its leaf/stem ratio and SPAD index. However, it is not sufficient to promote higher forage production, so further research is needed with other grasses to confirm its efficiency, when associated with N. Conclusion. Nitrogen fertilization directly contributes to promoting higher yields and fast establishment of the pasture. Nitrogen doses between 100 and 150 kg ha-1 proved to be the most indicated for the development of P. maximum cv. Mombasa.
RESPUESTA AGROPRODUCTIVA DE Moringa oleifera Lam. EN DIFERENTES EDADES Y ALTURAS DE CORTE
Authors: Ledea Rodríguez José Leonardo , Reyes Pérez Juan José , La O León Orestes , Benítez Jímenez Diocles Guillermo , Arias Pérez Ramón Crucito , Méndez Martínez Yuniel
Published: May 2023

Background. Background. The Moringa oleifera Lam is a fast growing deciduous tree. Objective. To evaluate under conditions of Cauto Valley, Cuba, the effect of the combination of cutting height with cutting age in morphological and productive variables in Moringa oleifera vc Criolla. Methodology. The evaluations were developed in a design of divided plots with four replicas, the cutting height (0, 10, 20, 30 and 40 cm) was identified as the main plot, and the cutting age (45 and 60 days) as a sub plot. for a total of ten treatments. Results. Plant height (103.9 cm) and number of leaves per plant (29.15) were favored (p≤0.05) when the cut was combined at 60 days at 40 cm height, the stem diameter was variable depending on cutting height The green matter yield (GMY) did not show significant differences (P≥0.05) when the cut was used between 10 and 40 cm in height at 60 days (5.62-5.85 t GM / ha-1), at 45 days to All the results were variable, but lower (p≤0.05) than those obtained at 60 days. The DM yield was favored in the same range of cutting height and age as for GMY, and ranged between 1.14-1.73 t DM / ha-1. Implications. It is recommended to use this management for the production of fodder in the conditions of the Cauto Valley and evaluate it over time, emphasizing the survival of the plants and sustainability of the forage production. Conclusions. The management system evaluated for forage production of Moringa oleifera, contributed an important accumulation of leaves that contributed to acceptable GM and DM productions, the combination that contributed most to this result was the cut at 60 days at 40 cm high.
THE EFFECT OF INOSITOL, PYRIDOXINE AND THIAMINE ON SOMATIC EMBRYOGENESIS OF Agave angustifolia
Authors: Reyes-Díaz J. I. , Arzate-Fernández A. M. , Piña-Escutia J. L. , Norman-Mondragón T. H.
Published: May 2023

Background: Somatic embryogenesis in Agave angustifolia is an option for massive in vitro propagation and genetic improvement of this species, this process involves the induction of embryogenic callus, the development and maturation of embryos and their germination to form a complete plant. In this sense, an optimized selection of the compounds of the culture medium is required. Objective: This study evaluated the effect of vitamin components (inositol, pyridoxine and thiamine) on callus formation and induction of somatic embryos in A. angustifolia. Methodology: Two consecutive assays were conducted, assay I consisted of eight treatments to determine the isolated effect and in combination of three vitamin compounds (250.0 mg of L-1 inositol, 0.5 mg of L-1 pyridoxine and 2.0 mg of L-1 thiamine). In assay II the effect of six concentrations of thiamine (1.5, 2.0, 2.5, 3.0, 3.5 and 4.0 mg L-1) was determined. In both assays, a completely randomized experimental design was used and each treatment had 20 repetitions. Results: The results of assay I show that the formulation of the vitamin complex of the culture medium plays a fundamental role in this process, suggesting that thiamine is an essential compound for the induction of somatic embryos (SE) of A. angustifolia because calluses obtained in thiamine supplemented media (alone or in combination) had a better embryogenic response than those not supplemented with this compound; In addition, in assay II with the increase in the concentration of thiamine to 2.5 and 3.0 mg L-1 in the culture medium, it is possible to induce a higher number of SE per explant (50.5 and 55.9, respectively), compared to 35.8 SE induced with the original concentration of thiamine (2.0 mg L-1). Implications: The results of this study contribute to a better understanding of the importance of the formulation of the vitamin complex and the effect of its addition in the culture medium to induce a greater number of SE in A. angustifolia. This can help in the beginning of programs of genetic improvement and ex situ conservation of this species. Conclusion: The results of this research suggest that thiamine is an essential compound for the acquisition of embryogenic potential in the somatic cells of A. angustifolia, since by increasing the concentration of this component in the culture medium it is possible to obtain a greater number of somatic embryos with high ex vitro survival rates.
USO DE ÁCIDO 2 -CLOROETIL- FOSFONICO PARA INDUCIR PRODUCCIÓN Y CALIDAD DE GOMA DE MEZQUITE (Prosopis laevigata)
Authors: Flores-Hernández Arnoldo , Murillo Amador Bernardo , Macías-Rodríguez Francisco Javier , Hernández-Herrera José Antonio , Valenzuela-Nuñez Luis Manuel , Hernández-Montiel Luis Guillermo
Published: May 2023

Background. Mezquite gum (Prosopis laevigata [Humb. & Bonpl. ex Willd.]) is similar to the gum Arabic; its production is associated to the stress condition of the tree. Objective. To induce and evaluate the gum production and quality. Methodology. A completely randomized design with factorial arrangement was used, factor one was seasons (spring and autumn), factor two was tree heights (2.0 and 3.0 m) and factor three was the application of two products, acid 2 -chloroethyl- phosphone (Etherel 240®) + distilled water and a control (distilled water). Results.  The gum was produced only in primary branches between 10 and 15 days after applying 2-chloroethyl phosphonic acid + distilled water. Gum production was higher in autumn in 3.0 m trees, with an average of 57 g per tree. A yield of 10.8 kg ha-1 of gum with a density of 190 trees ha-1 was estimated. The content of ash and protein in gum was higher in trees of 2.0 m in autumn, while the content of fiber and nitrogen-free extract in gum was higher in trees of 3.0 m in autumn. The moisture and fat content in gum was higher in spring in trees of 2.0 and 3.0 m, respectively. The pH of the gum was less acid in 3.0 m trees in spring with a lower content of impurities. Implications. It is suggested to carry out other tests to determine the presence of acid 2-chloroethyl-phosphonic in the chemical composition of the gum. Conclusion. The application of acid 2-chloroethyl-phosphonic (20%) + distilled water stimulated gum secretion in mesquite trees. Trees treated with distilled water (control) did not produce gum.
CARACTERIZACIÓN BIOFÍSICA Y DE COMPOSICIÓN ESTRUCTURAL EN SISTEMAS AGROFORESTALES DE CAFÉ ORGÁNICO DE VERACRUZ
Authors: Ruiz-García Patricia , Gómez-Díaz Jesús David , Valdes-Velarde Eduardo , Tinoco-Rueda Juan Angel , Flores-Ordoñez Marisol , Monterroso-Rivas Alejandro Ismael
Published: May 2023

Background. The agroforestry systems of organic coffee from the community of Chocamán, Central Veracruz, Mexico, have been established for 29 years; they are small areas with complex terrain topography and scarce information on biophysical aspects, composition and tree structure. Objective. to characterize these systems to have local information, useful for decision making. Methodology. The biophysical environment characterization, classification of coffee plantations and description of agroforestry systems composition and structure was performed. Results. Five terrain forms were defined as: slightly undulating valley, moderately sloping slope, sloping slope, moderately steep slope and steep slope. The main climate is semi-warm from the temperate group with long fresh summer. Coffee plots were classified as traditional and commercial polycultures. Two vertical strata (upper and lower) were distinguished, with a richness of 51 tree and shrub species. Musa acuminata Colla was the species with the highest “importance” value of the lower stratum in all the plots evaluated. In the upper stratum, stood out the species Lippia myriocephala Schltdl. & Cham., Inga vera Willd., Inga spuria H & B. Ex Willd., and Acrocarpus fraxinifolius Wight et Arn. Implications. This study contributes to decision-making by producers of the Catuaí Amarillo S.S.S.Conclusion. Variables obtained can facilitate the selection of species that respond to specific characteristics of the site and the needs of the producer.
ESTADO DE LA PRODUCCIÓN Y CONSUMO DE PLAGUICIDAS EN MÉXICO
Authors: Moo-Muñoz Andy , Azorín-Vega Erika , Ramírez-Durán Ninfa , Moreno-Pérez Pablo
Published: May 2023

Background. One of the problems in Mexico about the use and quantification of pesticides, is that there is a lack of efficient regulation and monitoring because there is no detailed information on its use, so this work analyzes the use of pesticides in Mexico. Objective. To know the current situation of the use of chemical pesticides used in Mexico. Methodology. A search and systematic review of scientific publications related to pesticides in Mexico during the last 20 years in indexed or arbitrated journals. Results. The analysis of these investigations indicates that in Mexico in 2018> 61,000 tons of pesticides were imported, although in 2017 the production was greater than 106 thousand tons. One of the problems in Mexico, as in other countries, is that there is a lack of efficient regulation and monitoring of the use of pesticides. During the last two decades the total consumption of pesticides in Mexico increased between 57-65%, the data from the available sources of their consumption show differences of the annual average of 27%, equivalent to 14,000 t per year, greater than the consumed in 2016 by countries such as Uruguay, Greece, Portugal, the Netherlands and Honduras. Implications. In order to reduce this problem, it is proposed to implement a "national logbook for the registration and use of pesticides" that includes the type of pesticide used, brand, active ingredient, applied dose (Kg / ha) and frequency of application. Conclusions. The obvious inconsistency of thousands of tons between national and international statistics is due to an inadequate quantification of pesticide use, a characteristic that occurs not only in Mexico. This situation is a serious global threat with environmental, economic and social implications, since the potential ecological damage is underestimated. Knowing the actual amount of pesticides used and will allow promoting real strategies aimed at reducing their use.
EL LARGO DE LACTACIÓN Y LOS INTERVALOS PARTO Y DESTETE PRIMER-SERVICIO AFECTAN EL SUBSECUENTE TAMAÑO DE CAMADA DE CERDAS EN UNA GRANJA COMERCIAL EN EL SURESTE DE MÉXICO
Authors: Ek-Mex Jesus Enrique , Peralta-Torres Jorge Alonso , Muñoz-Osorio Germani Adrian , Segura-Correa Jose Candelario
Published: May 2023

Background. Studies in temperate regions report the effect of lactation length (LL) and farrowing- service (IFS) and weaning-to-first service intervals (IWS) on the reproductive efficiency of sows in commercial farms. However, research about this topic under tropical conditions is scarce. Objective. To investigate the relationship of LL, IWS and IFS on subsequent number of piglets born alive (SPBA), and the effect of LL on number of parity per sow per year (NFY) and number of piglets born alive per sow per year (PBAY) in a commercial farm in the tropics of Mexico. Methodology. Data from 9663 litters were used. The statistical model for SPBA, NFY and PBAY included the fixed effects of farrowing year (2013, 2014), farrowing season (rainy, north and dry), farrowing number (1, 2, 3, 4, 5, 6), simple interaction of year by farrowing season, and the linear and quadratic effects of LL, IWS and IFS for SPBA, and the linear and quadratic effect of LL for NFY and PBAY. Results. The factors evaluated were significant for all variables of interest. Linear effect (P < 0.05) of LL, IWS and IFS was found only on SLNV. The predictive equation for SLNV was Y= 10.8551+0.02242*LLL+0.01515*IDS. The equation for SPBA with IFS was Y= 10.9939 + 0.01604*IFS. In addition, a negative linear and quadratic effect (P < 0.05) of LL on NFY, and a negative linear effect (P < 0.05) on SPBA were found. The predictive equation for NFY was Y= 2.7432-0.001689*LL-0.00032*LL2 and for PBAY was Y= 32.2414-0.1444*LL. Implications. The effect of LL, IWS and IFS on sow productivity is fundamental for decision making and adapting management, techniques and technologies to production systems. Conclusion. Under the conditions of the present study, increasing LL and IWS increased sow SPBA. However, increasing LL reduced NFY and PBAY.
Creating a Brand Concept or How to Find the Meaning of the Territory (a Case Study «Syktyvkar - the Capital of the Forest»)
Authors: Leyman I. I.
Published: May 2023

Branding is an actual and relatively new area of activity for the development of territories. There are various interpretations of this concept, as a result of which there is not always a correct interpretation of its purpose, tools, technological schemes. It is promising to consider a brand from the point of view of social history as the ability to create value energy through the translation of the meaning of the territory. The initial stage of branding involves the formulation of a concept based on knowledge about the territory. The brand concept is the meaning of the territory in the opinion of the local population, expressed through symbols and associations. Historically, the meaning of the territory was formed, fi rst of all, under the infl uence of the geographical factor, which then determined the socio-cultural characteristics of the local population. In this regard, the main task of the brand developers is to transform the physical and geographical characteristics and cultural and geographical objects of the territory into symbolic capital, which in the future should give stable economic indicators. Since 2021, the capital of the Komi Republic has been developing a brand «Syktyvkar – the capital of the Forest». Syktyvkar is a center of timber processing, education, science, culture and sports. The concept of the brand «Syktyvkar - the capital of the Forest» is an idea that can make the city recognizable, unite local residents, attract professionals and give an additional impetus to the development of the territory.
Awareness on Organ Donation among Urban and Rural Communities in Bintulu
Authors: Venorich Netten , Selamat Neni Widiasmoro , Sharif Norshafarina , Ismail Siti Zulaikha Ibadillah
Published: May 2023

In Malaysia, the number of registered organ donors are relatively small in comparison to other countries. This study aimed to investigate the awareness, knowledge and practices on organ donation among public in Sarawak. A cross-sectional study was conducted in urban and rural parts of Bintulu, Sarawak. Questionnaires consisting of socio-demography (5 items), awareness (4 items), knowledge (6 items) and practice (5 items) questions were distributed using random and snowball sampling techniques. A total of 327 respondents (age = 33.27 ±10.06 years; urban area = 50.2%; male = 59.0%; Christian = 48.9%; Bumiputra Sarawak = 53.2%) were enrolled. Urban respondents have demonstrated better knowledge (definition = 24.1% vs 23.6%; treatment = 42.2% vs 41.6%; side effects = 45.2% vs 32.9%; from living donor = 80.1% vs 70.8%; from dead donor = 71.7% vs 53.4%; organs can be donated = 19.9% vs 27.3%) compared to rural respondents. Urban respondents possessed better awareness (awareness = 86.1% vs 73.9%; source of information = 39.2% vs 31.7%; need = 70.5% vs 50.3%) than their counterparts. Subsequently, urban respondents reported better practice (agree = 68.7% vs 60.2%; registered = 2.4% vs 1.2%; donate after death = 27.7% vs 25.5%; without permission = 20.5% vs 18.0%; for loved ones = 72.9% vs 64.6%) than rural respondents. Conclusion: Population in urban area are more aware, have higher knowledge and better practice regarding organ donation. Health education on organ donation should be encouraged specifically among rural residents to enhance the number of registered organ donors in Malaysia.
Impact of Experiential Learning on Student performance in Hospitality and Tourism Education
Authors: Al Zisan Khandoker , Albattat Ahmad , Mohammad Abdul Basar Siti Mariam
Published: May 2023

This paper tries to fathom the perceptions of very last year tourism and hospitality college studentsregarding their education and the extent of self-belief that infused in them to stand the future tourismindustry demanding situations. The use of multivariate measures has furnished four vital elementsrepresenting the underlying dimensions of instructional education: training pleasure, learning patterns,preceding experience, and pragmatic gaining knowledge of choices. The studies have proven thrillingcorrelations between preceding work elements enjoy with other features schooling delight and activiststudying. Further high quality and terrible correlations had been recognised between scholardemographics gender and residing arrangements and former work revel in. The study has thrown new lightat the student perception and their nature of preceding paintings experience. This has given impetus toresearch this region because it has findings almost about college students' mastering alternatives andformer paintings enjoy.
Descriptive Study of the Stress Level and Stressors among medical cluster Students during Covid-19 Pandemic
Authors: Attalla Sohayla M. , Mohan Dashnamurthy , Mohammed Julie , Ruhi Sakina , Ashok Kumar Kavitha , Jeppu Ashok Kumar , Hanafy Nihal A.
Published: May 2023

Stress is a normal and necessary part of life. It is the fight-or-flight response to challenges in the world. This natural reaction has specific physical effects on the body to better handle these challenges. Among university students, stress is ubiquitous. They face stress throughout their education journey that may affect their academic achievement with other effects such as mental disturbance, suicidal thoughts and more. This research studies the stressors and measures the stress levels among medical students in a private Malaysian university. The data were collected through an online questionnaire based on the Medical Students Stressors Questionnaire (MSSQ) and General Health Questionnaire (GHQ). The results of MSSQ show that verbal or physical abuse by other students, parental wish to study medicine and not enough medical skill practice are those factors that cause no stress to the respondents. In contrast, the factors that cause mild stress are self-expectation (40%), conflict with personnel (20%), lack of guidance from the teacher (34.3%), feeling incompetence (30%), lack of time for family and friends (30%), learning content full of competition (35.7%) and lack of teaching skills from teachers (27.1%). Mild stressors include examinations (32.9%), talking to patients about problems (47.1%), conflict with other students (28.7%), quota system in examinations (32.9%), not enough study material (25.7%), participation in class discussion (24.3%), falling behind in reading schedule (31.4%), participation in class presentation (35.7%) and uncertainty of what is expected of themselves (32.9%). The major stressor is having a heavy workload (32.9%). According to GHQ, the mild stressors include the inability to overcome difficulty (28.6%), inability to enjoy regular day activity (30%), facing up to problems (30%), feeling unhappy or depressed (30%) and losing confidence (28.6%). Mild stressors include the inability to concentrate on the study (37.1%), loss of sleep (31.4%), inability to feel useful (38.6%), the inability of making the decision (35.7%), being under strain (28.6%) and being reasonably unhappy (34.3%).
Effect of Total Employment, Foreign Direct Investment, and GDP on Period Poverty; An Economic Analysis of the United States of America (USA), India and New Zealand
Authors: Ahmad Suhaimi Ahmad Alif , Shahminan Muhammad Naqib , Shamsol Anuar Siti Nurzulaika , Ayim Nur Nabilah Aimi , Yousefi Nejad Maryam
Published: May 2023

This study selected three countries: the US, India, and New Zealand, to analyse their economic situation from 1996 until 2019 using nine economic indicators. The economic indicators considered by this study are Total Employment, Exports of Goods and Services, Foreign Direct Investment (FDI), Gross Domestic Product (GDP), Imports of Goods and Services, Inflation, Total Labour Force, Population and Government Effectiveness. This study has selected these three countries due to economic issues, Period Poverty that happens to these three countries and wants to find the difference in economics between these three countries. This study has found that New Zealand has the best result of economic indicators, with low results compared to other countries during these 24 years. The result of this study may help other countries change their policy to deal with period poverty and have their economic growth. At the same time, this study also helps potential foreign investors to have better economic decision making.
Exploring Tourists’ Intention to Visit a Heritage Destination
Authors: Mohamad Noraihan , S. Chandran Naveena , Marasol Noor Khairunisa , Syed Ismail Syed Izuddin
Published: May 2023

Bukit Melawati is one of the few notable cultural and natural heritage assets in Selangor that significantly contribute to the tourism industry growth. As a historical site in Selangor, Bukit Melawati has several remains from the past as tourist attractions. However, the historical part has been neglected and overlooked rather than the other attractions. Thus, this study was conducted to identify the influence of destination authenticity, destination awareness, and destination image as predictors toward tourist revisit intention to Bukit Melawati. A cross-sectional survey was carried out on local and international tourists at Bukit Melawati. A total of 290 respondents were selected based on the convenience sampling technique. A technique analysis Multiple Linear Regression using SPSS version 22 was employed to test the hypothesised model. The analysis showed that destination authenticity, awareness, and image explained 49.6% of the variance on tourist revisit intention. The result found that destination image was the strongest predictor of tourist revisit intention to Bukit Melawati, followed by destination authenticity. Destination awareness was an insignificant predictor of tourist revisit intention to Bukit Melawati. It was concluded that tourists intention to revisit Bukit Melawati derived from its image and authenticity as a heritage tourism destination. As suggested, it is important to create tourist awareness to increase their interest in visiting Bukit Melawati and other heritage destinations in Malaysia
Besoins en soins psychosociaux et de soutien des personnes atteintes d’un myélome de stade avancé
Authors: Rowland Suzanne , Forbes Robin , Howell Doris , Kelly Helen , Haghayegh Arta , Cardinale Maja , Ramnanan Trisha , Mayo Samantha
Published: May 2023

Objectif : La présente étude qualitative vise à comprendre, du point de vue du patient, comment c’est que de vivre avec un myélome multiple au stade avancé, quelles sont les répercussions psychosociales de cette maladie et quels sont les besoins d’aide du patient pour lui permettre de prendre en charge sa maladie et de s’y adapter. Méthodologie : On a utilisé une méthode descriptive interprétative. Pour chaque participant, on a eu un entretien téléphonique pour l’amener à décrire ses préoccupations et ses problèmes psychosociaux, de même que l’aide qu’il utilise pour faire face à sa maladie. On a analysé les transcriptions des entretiens téléphoniques à l’aide d’une méthode de description interprétative, ce qui a permis de dégager les thèmes communs. Résultats : L’échantillon à l’étude était composé de douze adultes atteints de myélome au stade avancé, ayant suivi au moins trois traitements, ou étant dépendants de transfusions sanguines. Tous recevaient des soins ambulatoires dans un établissement de Toronto, en Ontario (Canada). Quatre thèmes ont été dégagés : 1) confusion semée par le diagnostic et les options thérapeutiques; 2) difficulté à trouver de l’information pertinente; 3) chronicité des effets secondaires du traitement; 4) importance du soutien social pour faire face à cette maladie qui menace la vie. Conclusion : Les résultats semblent indiquer que les répercussions psychosociales de la vie avec un myélome multiple au stade avancé dépendent en grande partie de la capacité du malade à comprendre les complexités du diagnostic et à obtenir l’aide nécessaire pour affronter les répercussions physiques et émotionnelles. Des interventions cliniques spécifiquement adaptées pour répondre aux besoins d’information et de soutien de cette population sont nécessaires. Mots-clés : myélome multiple, description interprétative, qualitatif, psychosocial
Diretrizes para a Promoção do Senso de Presença na Educação a Distância
Authors: Krassmann Aliane Loureiro , Tarouco Liane Margarida Rockenbach , Bercht Magda
Published: May 2023

Embora em ascensão, observa-se que a Educação a Distância (EAD) ainda possui uma percepção popular de qualidade inferior em comparação com o Ensino Presencial. Estima-se que carências como as de relações interpessoais, do uso de tecnologias mais interativas e dinâmicas, e da realização de práticas profissionais contribuam para essa percepção. Buscando atuar nestas fragilidades, esta pesquisa propõe um suporte midiático composto por Mundos Virtuais (MVs) e Non-Player Characteres (NPCs), com um destes NPCs integrado à tecnologia de Agente Conversacional, atuando na função de Companheiro Virtual. Como aspecto principal, investiga-se o senso de presença, um construto da dimensão afetiva definido como a sensação de “estar lá”. Um total de 132 estudantes realizou uma atividade extracurricular em um de três grupos: Controle, que utilizou o Ambiente Virtual de Aprendizagem web tradicional; Experimental, que utilizou o MV; e Real Experimental, que utilizou o MV com o Companheiro Virtual. Com base nos resultados e discussões e buscando responder à questão de pesquisa “Como promover o senso de presença de forma a contribuir com o processo de aprendizagem na EAD?” foi organizada uma estrutura com sete diretrizes que direcionam o uso das tecnologias mencionadas a fim de se beneficiar de suas potencialidades.
Erodiert durch Homeoffi ce der Betrieb als Lernort? Zum Stellenwert des Arbeitsplatzes als Interaktionsraum
Authors: MEYER RITA , KEHRBAUM TOM , WANNÖFFEL MANFRED
Published: May 2023

Der Beitrag gibt einen Ausblick auf mögliche Folgen einer Marginalisierung des Betriebs als Arbeits- und Lernort durch die Zunahme von mobiler Arbeit. Homeoffice kann die geschlechtsspezifische Arbeitsteilung verstärken und verschärft möglicherweise auch eine Segmentation zwischen Beschäftigten in der Produktion und indirekten Bereichen. Dadurch entstehen auch neue Problemlagen im Hinblick auf die soziale Teilhabe an betrieblicher Bildung. Die Autor*innen nehmen diese Entwicklungen zum Anlass, den Zusammenhang von Innovationsfähigkeit und sozialer Interaktion aus betriebspädagogischer und soziologischer Perspektive zu betrachten. Dabei werden ausgehend von der Tatsache, dass zwischenmenschliche Interaktionsprozesse im Arbeitshandeln als Ressource zum Aufbau von Erfahrungswissen grundlegend sind, mögliche Konsequenzen online-basierter Zusammenarbeit thematisiert und entlang sozialwissenschaftlicher Theorien gerahmt.
Im Spannungsfeld von Betrieb und Wohnen. Sozial-ökologische Herausforderungen ortsflexibler Arbeit
Authors: GRUBBAUER MONIKA , MANDERSCHEID KATHARINA
Published: May 2023

Die Corona-Pandemie hat sowohl den Wandel der Arbeitswelt als auch räumliche Veränderungsdynamiken beschleunigt. Im Zentrum der Entwicklung stehen insbesondere Homeoffice bzw. ortsflexible Arbeitsmodelle. Je nach individueller Haushalts- und Lebensform stellen sich für Arbeitnehmende dadurch unterschiedliche alltagsweltliche Herausforderungen. Aus einer nachhaltigen Entkoppelung von Unternehmensstandort, Arbeitsplatz und Wohnort resultieren zudem Effekte für den ökologischen Umbau von Siedlungsstrukturen, Verkehr und Mobilität. Der Beitrag gibt einen Einblick in den Diskussionsstand der Forschung, arbeitet Zusammenhänge zwischen dem Wandel der Arbeit und der Lebenswelt sowie den Anforderungen im Hinblick auf Siedlungsstrukturen sowie verkehrliche und soziale Infrastrukturen heraus. Abschließend werden einschlägige Forschungslücken identifiziert.