bluuebunny/crossref_metadata_2025 huggingface dataset:
How Can Personality Enhance Sustainable Career Management? The Mediation Effects of Future Time Perspective in Career Decisions
Authors: Park In-Jo , Gu Meiqiao , Hai Shenyang
Published: February 2020

This study seeks to explore the mediating effects of future time perspective (FTP) between personality variables and career decision-making self-efficacy and career indecision with respect to managing sustainable careers. We used an online survey to collect data from 250 undergraduates for Study 1, in which we explored the mediating role of FTP which focused on the emotional and cognitive personality traits of emotional intelligence, ego resilience, and self-control; and from 249 undergraduate students for Study 2, in which we investigated the mediating effects of FTP on the personality traits of extraversion, conscientiousness, and neuroticism. The results from the first study indicated that emotional intelligence, ego resilience, and self-control had indirect effects on career decision-making self-efficacy and career indecision via FTP. The results of the second study showed that extraversion, conscientiousness, and neuroticism had indirect effects on career decision self-efficacy and career indecision via FTP. These results contribute to an enhanced understanding of the relationship between personalities and career decisions, and they expand our knowledge about the antecedents and consequences of FTP. At the end of this paper, we discuss the theoretical and practical implications of this study and identify directions for future research.
Consequences of Spatial Heterogeneity of Forest Landscape on Ecosystem Water Conservation Service in the Yi River Watershed in Central China
Authors: Liu Lyuyi , Bian Ziqi , Ding Shengyan
Published: February 2020

Forest landscapes, especially their spatial heterogeneity, play a key role in sustaining the ecosystem water conservation service in a watershed. However, this domain has not been fully investigated. This study uses the Yi River watershed in central China as the study site. We calculated the water conservation amounts of different forests through the water balance method and quantified the landscape spatial heterogeneity of forests using landscape metrics. Then we ran correlation analysis to find the correlating relationship between the landscape spatial heterogeneity of forests and the ecosystem water conservation service. We finally applied a redundancy analysis to explore the respective influencing strength of the landscape compositional heterogeneity and configurational heterogeneity of forests on the water conservation service. Results indicate that: (1) The area proportion of different forests has a significant impact on the spatial distribution of the water conservation service. When mixed forest is dominant and its area proportion is much greater than that of other forests, the generation of the water conservation service can be best enhanced; (2) Changes of the landscape compositional heterogeneity and configurational heterogeneity of forests can affect the water conservation service to different degrees. In particular, the landscape spatial heterogeneity of mixed forest has the greatest impact on this ecosystem service; (3) The landscape configurational heterogeneity of deciduous broad-leaved forest and mixed forest has a greater impact on the water conservation service than the landscape compositional heterogeneity, whereas that of evergreen needle-leaved forest has the opposite effect. In general, appropriately adjusting the combination and configuration of different forests in a watershed can effectively promote the generation of the ecosystem water conservation service. This study provides a scientific basis for future forest management with a view to improving the landscape sustainability of forests.
Time-Dependent Reliability-Based Service Life Assessment of RC Bridges Subjected to Carbonation under a Changing Climate
Authors: Jiang Chao , Fang Jing
Published: February 2020

This paper assessed the service life of RC bridges subjected to carbonation under a changing climate based on time-dependent reliability analysis. First, a simplified carbonation model and the corresponding incremental method were briefly reviewed. Then, the fatigue damage prediction model and climate model were briefly introduced. Afterward, the Monte Carlo simulation-based time-dependent reliability analysis procedure for service life assessments was presented, which integrated the carbonation depth prediction model, fatigue damage prediction model and climate model. Based on the analysis procedure, a comprehensive case study was conducted to estimate the effects of climate change, fatigue damage, concrete cover thickness and concrete grade on the service life under different reliability levels. The case study showed that the service life under a reliability level of 2 is around half of that under the reliability level of 1. Under the reliability level of 1.5, the service life under RCP8.5 (a high emission scenario defined by Intergovernmental Panel on Climate Change) can be 28 years shorter than that under no climate changes. The service life at girder top undergoing compressive fatigue damage can be 49% shorter than that without fatigue damage and 25 years shorter than that at girder bottom undergoing tensile fatigue damage. The service life at girder top with a concrete cover thickness of 45 mm can reach 2.6 times that with a concrete cover thickness of 25 mm. The service life of C50 concrete can reach approximately 2–3 times that of C30 concrete. These findings inform civil engineers that for existing RC bridges, the effects of climate change and fatigue damage should be properly considered when the remaining service life of RC bridges is concerned. Moreover, for planned RC bridges, higher concrete grade and thicker concrete cover are two effective choices to achieve a longer service life.
The Effect of Real and Virtual Construction Field Trips on Students’ Perception and Career Aspiration
Authors: Seifan Mostafa , Dada Oluwaseun Deborah , Berenjian Aydin
Published: February 2020

To adequately prepare students for engineering practices, it is imperative that institutions adopt innovative methods of teaching, learning, and assessment. One such approach is the use of real field trips (RFT) to construction sites, which can enhance students’ perceptions of related careers. Although virtual field trips (VFTs) have emerged as a viable alternative—or supplement—to traditional field trips, little is known about their potential to provide the same or similar career exploration advantages. Using responses from a self-reported questionnaire administered to university students who participated in an RFT, this study sought to examine the usefulness of site visits in developing essential skills required for civil engineers. It also examines student perceptions on the use of VFTs as part of their university experience and the extent to which it could replace RFTs. The results indicate that students consider VFT as an enjoyable way to learn, given the possibilities facilitated by the new technology. However, notwithstanding its success, the students commonly opined that VFT was not a substitute for a RFT. From a holistic perspective, the issue is not whether VFTs can replace traditional field trips or not; it is rather the focus on identifying an integrated approach that combines lectures, and virtual and real field trips in a manner that supports a social constructivism mode of learning. Ultimately, this combination will enable students to effectively construct multiple links between lectures given in a hall and the real world outside.
Study on the Sustainable Development of an Arid Basin Based on the Coupling Process of Ecosystem Health and Human Wellbeing Under Land Use Change—A Case Study in the Manas River Basin, Xinjiang, China
Authors: Liu Ranran , Dong Xiaobin , Zhang Peng , Zhang Ying , Wang Xiaowan , Gao Ya
Published: February 2020

Due to the differences in the contributions of land use types to ecosystem health and human wellbeing, there is a trade-off and a coordinating relationship between ecosystem health and human wellbeing, which affects the sustainable development of a river basin. To explore the impacts of the responses of ecosystem health and human wellbeing and the combined effects under land use change, this paper, taking the Manas River Basin (MRB) as an example, evaluated the health status of the MRB by the model: Vitality (V), organization (O), resilience (R), and services (S). From a sustainability perspective, an index system of human wellbeing was constructed, which included society and the economy, health and safety, materials and resources, and ecology and the environment. On this basis, the coupling coordination relationship and sustainable development status of the basin was assessed. The results showed that as land use changed, the ecosystem health showed a downward trend, and human wellbeing grew exponentially. The sustainable development index and the coupling coordination degree of the MRB were similar, indicating that the level of balance between ecosystem health and human wellbeing was the key to the sustainable development of the basin, and the overall situation was in a state of moderate imbalance and moderate unsustainability. Therefore, it is necessary to carry out sustainable management of the whole basin.
Cultivation Area Affects the Presence of Fungal Communities and Secondary Metabolites in Italian Durum Wheat Grains
Authors: Beccari Giovanni , Prodi Antonio , Senatore Maria Teresa , Balmas Virgilio , Tini Francesco , Onofri Andrea , Pedini Luca , Sulyok Michael , Brocca Luca , Covarelli Lorenzo
Published: February 2020

In this study, durum wheat kernels harvested in three climatically different Italian cultivation areas (Emilia Romagna, Umbria and Sardinia) in 2015, were analyzed with a combination of different isolation methods to determine their fungal communities, with a focus on Fusarium head blight (FHB) complex composition, and to detect fungal secondary metabolites in the grains. The genus Alternaria was the main component of durum wheat mycobiota in all investigated regions, with the Central Italian cultivation area showing the highest incidence of this fungal genus and of its secondary metabolites. Fusarium was the second most prevalent genus of the fungal community in all cultivation environments, even if regional differences in species composition were detected. In particular, Northern areas showed the highest Fusarium incidence, followed by Central and then Southern cultivation areas. Focusing on the FHB complex, a predominance of Fusarium poae, in particular in Northern and Central cultivation areas, was found. Fusarium graminearum, in the analyzed year, was mainly detected in Emilia Romagna. Because of the highest Fusarium incidence, durum wheat harvested in the Northern cultivation area showed the highest presence of Fusarium secondary metabolites. These results show that durum wheat cultivated in Northern Italy may be subject to a higher FHB infection risk and to Fusarium mycotoxins accumulation.
Domain Shuffling between Vip3Aa and Vip3Ca: Chimera Stability and Insecticidal Activity against European, American, African, and Asian Pests
Authors: Gomis-Cebolla Joaquín , Ferreira dos Santos Rafael , Wang Yueqin , Caballero Javier , Caballero Primitivo , He Kanglai , Jurat-Fuentes Juan , Ferré Juan
Published: February 2020

The bacterium Bacillus thuringiensis produces insecticidal Vip3 proteins during the vegetative growth phase with activity against several lepidopteran pests. To date, three different Vip3 protein families have been identified based on sequence identity: Vip3A, Vip3B, and Vip3C. In this study, we report the construction of chimeras by exchanging domains between Vip3Aa and Vip3Ca, two proteins with marked specificity differences against lepidopteran pests. We found that some domain combinations made proteins insoluble or prone to degradation by trypsin as most abundant insect gut protease. The soluble and trypsin-stable chimeras, along with the parental proteins Vip3Aa and Vip3Ca, were tested against lepidopteran pests from different continents: Spodoptera exigua, Spodoptera littoralis, Spodoptera frugiperda, Helicoverpa armigera, Mamestra brassicae, Anticarsia gemmatalis, and Ostrinia furnacalis. The exchange of the Nt domain (188 N-terminal amino acids) had little effect on the stability and toxicity (equal or slightly lower) of the resulting chimeric protein against all insects except for S. frugiperda, for which the chimera with the Nt domain from Vip3Aa and the rest of the protein from Vip3Ca showed a significant increase in toxicity compared to the parental Vip3Ca. Chimeras with the C-terminal domain from Vip3Aa (from amino acid 510 of Vip3Aa to the Ct) with the central domain of Vip3Ca (amino acids 189–509 based on the Vip3Aa sequence) made proteins that could not be solubilized. Finally, the chimera including the Ct domain of Vip3Ca and the Nt and central domain from Vip3Aa was unstable. Importantly, an insect species tolerant to Vip3Aa but susceptible to Vip3Ca, such as Ostrinia furnacalis, was also susceptible to chimeras maintaining the Ct domain from Vip3Ca, in agreement with the hypothesis that the Ct region of the protein is the one conferring specificity to Vip3 proteins.
Snake C-Type Lectins Potentially Contribute to the Prey Immobilization in Protobothrops mucrosquamatus and Trimeresurus stejnegeri Venoms
Authors: Tian Huiwen , Liu Ming , Li Jiameng , Xu Runjia , Long Chengbo , Li Hao , Mwangi James , Lu Qiumin , Lai Ren , Shen Chuanbin
Published: February 2020

Snake venoms contain components selected to immobilize prey. The venoms from Elapidae mainly contain neurotoxins, which are critical for rapid prey paralysis, while the venoms from Viperidae and Colubridae may contain fewer neurotoxins but are likely to induce circulatory disorders. Here, we show that the venoms from Protobothrops mucrosquamatus and Trimeresurus stejnegeri are comparable to those of Naja atra in prey immobilization. Further studies indicate that snake C-type lectin-like proteins (snaclecs), which are one of the main nonenzymatic components in viper venoms, are responsible for rapid prey immobilization. Snaclecs (mucetin and stejnulxin) from the venoms of P. mucrosquamatus and T. stejnegeri induce the aggregation of both mammalian platelets and avian thrombocytes, leading to acute cerebral ischemia, and reduced animal locomotor activity and exploration in the open field test. Viper venoms in the absence of snaclecs fail to aggregate platelets and thrombocytes, and thus show an attenuated ability to cause cerebral ischemia and immobilization of their prey. This work provides novel insights into the prey immobilization mechanism of Viperidae snakes and the understanding of viper envenomation-induced cerebral infarction.
Haemoparasitic Infections in Cattle from a Trypanosoma brucei Rhodesiense Sleeping Sickness Endemic District of Eastern Uganda
Authors: Matovu Enock , Mugasa Claire Mack , Waiswa Peter , Kitibwa Annah , Boobo Alex , Ndung’u Joseph Mathu
Published: February 2020

We carried out a baseline survey of cattle in Kaberamaido district, in the context of controlling the domestic animal reservoir of Trypanosoma brucei rhodesiense human African trypanosomiasis (rHAT) towards elimination. Cattle blood was subjected to capillary tube centrifugation followed by measurement of the packed cell volume (PCV) and examination of the buffy coat area for motile trypanosomes. Trypanosomes were detected in 561 (21.4%) out of 2621 cattle screened by microscopy. These 561 in addition to 724 apparently trypanosome negative samples with low PCVs (≤25%) were transported to the laboratory and tested by PCR targeting the trypanosomal Internal Transcribed Spacer (ITS-1) as well as suspect Tick-Borne Diseases (TBDs) including Anaplasmamosis, Babesiosis, and Theileriosis. PCR for Anaplasma sp yielded the highest number of positive animals (45.2%), followed by Trypanosoma sp (44%), Theileria sp (42.4%) and Babesia (26.3%); multiple infections were a common occurrence. Interestingly, 373 (29%) of these cattle with low PCVs were negative by PCR, pointing to other possible causes of aneamia, such as helminthiasis. Among the trypanosome infections classified as T. brucei by ITS-PCR, 5.5% were positive by SRA PCR, and were, therefore, confirmed as T. b. rhodesiense. Efforts against HAT should therefore consider packages that address a range of conditions. This may enhance acceptability and participation of livestock keepers in programs to eliminate this important but neglected tropical disease. In addition, we demonstrated that cattle remain an eminent reservoir for T. b. rhodesiense in eastern Uganda, which must be addressed to sustain HAT elimination.
Spatiotemporal Relationships of Phytoplankton Blooms, Drought, and Rainstorms in Freshwater Reservoirs
Authors: Knapp Abigail S. , Milewski Adam M.
Published: February 2020

Algal blooms, especially those composed of toxic phytoplankton, are a global threat to eutrophic and mesotrophic freshwater reservoirs. While extreme hydrologic events such as flooding and drought have been shown to control bloom onset and success, the spatiotemporal dynamics of these relationships are still unclear for mesotrophic reservoirs. In this study, the relationships between hydrologic events and phytoplankton in Lake Allatoona and Lake Lanier, Georgia, United States, were characterized using historical and satellite datasets from 2008 to 2017 and statistical modeling. Results showed that the impact of stormflow and rainstorm events varied systematically from riverine to lacustrine reaches of the two reservoirs on weekly and monthly scales. Precipitation duration and stormflow were the most significant and best-fitting predictors of algal bloom biomass in deeper reaches of the two reservoirs, suggesting that algal blooms in more lacustrine environments may be better equipped for wet and stormy regimes than has been previously hypothesized.
Correction: Combination of Discrete Element Method and Artificial Neural Network for Predicting Porosity of Gravel-Bed River. Water 2019, 11(7), 1461
Authors: Bui Van Hieu , Bui Minh Duc , Rutschmann Peter
Published: February 2020

We have found one error in Equation (2) (duplicate with Equation (1)) in our paper published in the Water Journal [1]: (1) m i d u → i dt   = m i g → + ∑ k f → i , k + f → i , f [...]
Improving Pearl Millet (Pennisetum glaucum) Productivity through Adaptive Management of Water and Nitrogen
Authors: Ausiku Ausiku P. , Annandale John G. , Steyn J. Martin , Sanewe Andrew J.
Published: February 2020

Management of nitrogen and water plays a significant role in increasing crop productivity. A large amount of nitrogen (N) may be lost through leaching if these resources are not well managed. Wetting front detectors (WFDs) and Chameleon soil water sensors were used to adapt water and nitrogen applications with the goal of increasing millet yields, as well as nitrogen and water use efficiency. The trials were laid out as a randomized complete block design with factorial combinations of water and N, and included the following treatments: irrigation to field capacity (fortnightly and weekly), adaptive-water application based on sensor response or rainfed, and N treatments included either fixed nitrogen levels (0, 45, 90 kg N ha−1) or an adaptive-N rate, depending on N content of the soil solution extracted from WFDs. Adaptive management aims to steer water and nitrogen applications towards optimum crop requirements. Treatments that received both high water and nitrogen outperformed other treatments by 11% to 68% in terms of biomass production and 16% to 54% in grain yield, while water use efficiency and irrigation use efficiency values were also higher, ranging from 1.58 to 7.94 kg m−3 and 1.43 to 8.30 kg m−3. Results suggest that integrated adaptive water and nitrogen management should be considered to reduce high N losses and cost of crop production, without a meaningful yield penalty, relative to high production input management.
Pendampingan Teman Sebaya dan Peran Orangtua dalam Mewujudkan Remaja Bebas Narkoba dan Sehat Reproduksi di Wilayah Pesisir
Authors: Gurning Fitriani Pramita , Nasution Fauziah , Eliska Eliska
Published: February 2020

The frequent occurrence of drug abuse and premarital sex which is indicated from the frequent occurrence of raids on drug cases in Langkat District, the high number of early childhood marriages that still occur. This is compounded by the inactivity of religiously oriented adolescent activities, where previously youth groups tended to be active in empowering adolescents. School is one of the places for adolescent interaction and in one day many teenagers spend their time in school. The form of community facilitation activities with counseling activities, peer education training and mentoring through whatup media groups and also conducting counseling to parents aimed at increasing the knowledge and role of parents as agents of socialization to adolescents, peer education training aimed at increasing the role of adolescents as peer educators and assistance aimed at assisting adolescent peer educators in planning for, and dealing with problems related to the dangers of drugs, HIV/AIDS and reproductive health. An increase in students' knowledge after getting counseling and training about the dangers of drugs, HIV/AIDS and adolescent reproductive health. Suggestions for further activities are the need for traning of trainers for adolescent doctors and assistance in making adolescent health programs.
Implementasi Kebijakan Penanggulangan HIV/AIDS di Puskesmas Teladan
Authors: Suharto Suharto , Gurning Fitriani Pramita , Pratama Muchti Yuda , Suprayitno Emdat
Published: February 2020

One of the diseases that is now considered a problem that has received enough attention from the government is HIV and AIDS. Talking about HIV and AIDS means it discusses health issues that are currently quite sensitive to talk about. This relates to the unique nature of this disease. Besides the case which is like an iceberg phenomenon, namely the spread of HIV and AIDS cases that cannot be predicted at the initial phase and also has not found a cure to cure it. The purpose of this study is to obtain in-depth data on the implementation of HIV/AIDS policies in the Model Health Center, whether the policies made by the government run well or not in the field. This research uses a qualitative research method with descriptive research type on June 28, 2019, by interviewing informants and distributing questionnaires. As for the total overall value of the Government Policy Implementation is 235. The value of the implementation of government policies, amounting to 78.33% of the 100% expected results. The overall total value of HIV and AIDS is 83. HIV/AIDS counts in the working area of the Exemplary Health Center, which is 92.22% of the 100% expected results. Conclusions policy implementation has been going well and has been socialized to the community and health services, people at risk and sufferers of  HIV/AIDS in the work area of the Community Health Center already has its own organization where this organization is expected to help achieve the goals of this HIV/AIDS program, and to achieve this goal the Community Health Center conducts activities in the form of mobile clinics where the exemplary Community Health Center goes directly to conduct examinations to the community, and in terms of treatment for patients so far it can be said to be in good category and runs smoothly but there are obstacles where sufferers continue to do things that can trigger the development of the HIV virus although in addition patients continue to take drugs to inhibit and minimize the development of the HIV virus.
De encontros e afinidades em torno de uma ideia de universidade
Authors: Sarti Cynthia Andersen
Published: February 2020

Na forma de testemunho, parte de uma homenagem à Olgária Matos, este texto fala de um encontro e de afinidades em torno da criação do campus de filosofia e ciências humanas na Universidade Federal de São Paulo (Unifesp). Tem o sentido do reconhecimento da presença de suas ideias na formulação do projeto acadêmico que inaugurou essas áreas do conhecimento nesta universidade. Para isso, resgata esse momento inaugural, com as questões que então estavam em pauta, buscando a elas relacionar seu pensamento sobre a universidade.
Para além do curto vôo do entendimento: as experiências do pensamento no Fausto de Fernando Pessoa
Authors: Candido Gisele Batista
Published: February 2020

A vasta e diversificada produção de Fernando Pessoa tem um apelo filosófico tal que seria possível vê-la figurar com pertinência entre os autores estudados no universo acadêmico da filosofia, de modo que as pesquisas nessa direção têm se multiplicado atualmente. Nesse sentido, o Fausto pessoano ocupa um lugar singular, porque revela de forma contundente como alguns embates enfrentados pela filosofia, sobretudo no seu exercício especulativo e esclarecedor, serão retomados e desenvolvidos pelo poeta português, abrindo caminho para os desdobramentos de sua poesia e das experiências de seu pensamento poético-filosófico singular. O presente artigo buscará investigar as experiências do pensamento elaboradas em Fausto, tragédia subjetiva, evidenciando sua originalidade.
Verdade e infortúnio na tragédia de Aristóteles: uma defesa da poesia
Authors: Rocha Lúcia
Published: February 2020

Em Aristóteles, a relação da tragédia com a verdade mostra-se especialmente no capítulo IX da Poética, pela noção de “verossimilhança” (kata to eikon). Para o filósofo, a poesia diz respeito, antes de tudo, ao que parece verdade, ou ao que “poderia acontecer”, tendo ou não acontecido de fato. Sem desconsiderar a importância do verossímil na Poética, propomos, neste artigo, pensar o sentido da verdade para a tragédia a partir da noção de natureza (physis) que aparece nos capítulos IV e VII, e que compreende a concepção de arte (tékhnê) e de poesia, mímesis.
Comparing the effectiveness of mobile social network-based mindfulness intervention with acceptance and commitment therapy and mindfulness therapy on self-management and glycated haemoglobin level among patients with type 2 diabetes
Authors: Azadi Mohammad Mahdi , Manshaee Gholamreza , Golparvar Mohsen
Published: February 2020

Background and aims: The present study aimed to compare mobile social network-based mindfulness training, along with acceptance and commitment therapy (ACT) and mindfulness therapy on self-management and glycated haemoglobin (HbA1c) level in patients with type 2 diabetes. Materials and Methods: The research employed a pretest-posttest control group quasi-experimental design with a three-month follow-up. Among type 2 diabetic patients who referred to diabetes treatment centers in Isfahan in the spring of 2018, 80 of them were purposefully selected based on inclusion criteria and then randomly assigned to three groups of the social network-based mindfulness intervention, ACT, and mindfulness training, along with a control group. Then, the summaries of Diabetes Self-care Activities questionnaire and glycated haemoglobin test were used to measure the dependent variables. The mindfulness interventions were conducted in the form of attendance in the training sessions. In addition, virtual network-based training and ACT were presented during eight 45-minute and 120-minute sessions, respectively. Finally, the data were analyzed using repeated measures of ANOVA with Bonferroni post-hoc test by SPSS software. Results: The findings indicated that in the self-management variable, there was a significant difference between social network-based mindfulness (posttest mean=30.59, follow-up mean=30.88, P=0.004) and ACT (posttest mean=32.7, follow-up mean=32.29, P=0.001) with the control group. Further, a significant difference was observed between ACT and mindfulness therapy regarding self-management (P=0.04). In the HbA1c level, there was a significant difference only between social network-based mindfulness (mean in posttest and follow-up=7.44and 7.39, respectively, P=0.02) and the control group. Conclusion: According to the findings of the present study, mobile social networks-based mindfulness interventions, along with ACT, are considered as effective treatments for diabetic patients to increase self-management while reducingHbA1c.
The relationship of serum vitamin D, calcium, and phosphorus levels of mothers with growth indices of their newborns in pregnant women admitted to Hajar hospital of Shahrekord in 2016
Authors: Shabanian Sheida , Neyazi Neda , Khoshdel Abolfazl , Kheiri Soleyman , Ghafari Mohammad Saleh
Published: February 2020

Background and aims: Vitamin D deficiency is a known pandemic problem which has thousands of bad health outcomes. The aim of the current study was to investigate the effect of maternal vitamin D, Ca, and PO4 levels on growth indexes of newborns at birth and 1 month and 3 months after delivery in pregnant women admitted to Hajar hospital of Shahrekord, Iran in 2016. Materials and Methods: This descriptive-analytical study was conducted on 196 pregnant women admitted to the hospital. During pregnancy, 5 mL of mother’s blood and 5 mL of umbilical cord blood were taken. Serum calcium and phosphorus levels were determined immediately after sampling and then centrifuged. After collecting the samples, 25-OHD levels were measured by ELISA method. Neonatal growth indexes such as weight, height, and head circumference atbirth,1 month, and 3 months were measured. Data were analyzed using independent samples t test, ANOVA, and correlation coefficient by SPSS version 16.0. Results: Deficiency of vitamin D, phosphorus, and calcium was observed in 76%, 1%, and 25% of women, respectively. Moreover, deficiency of vitamin D, phosphorus, and calcium was reportedin56.1%, 15.8%, and 9.2% of newborns, respectively. There was a significant relationship between calcium level in newborns and their weight and height at birth, one month, and three months of age ( P<0.05). Levels of vitamin D, calcium and phosphorus of mother and newborns were significantly correlated ( P<0.05). Conclusion: More than two-thirds of mothers and more than half of the newborns were deficient in vitamin D. There was also a lack of calcium in one third of mothers and 9.2% of newborns, and phosphorus deficiency was observed only in 1% of mothers and 15.8% of newborns. Due to the low intake of these materials through nutrition, the supplementation of these substances, especially vitamin D and calcium, is required during pregnancy.
REFLEXÕES ACERCA DO DESEMPENHO E DAS DIFICULDADES DE ESTUDANTES DA EDUCAÇÃO BÁSICA E SUPERIOR NAS OPERAÇÕES COM FRAÇÕES
Authors: Etcheverria Teresa Cristina , Lisboa Aquino Viviane de Jesus , Dos Santos Oliveira Jackeline , De Carvalho Lisboa Caroline
Published: February 2020

Este texto tem como objetivo discutir o desempenho e as dificuldades apresentadas por estudantes da educação básica e por graduandos do curso de Licenciatura em Matemática na resolução das quatro operações fundamentais com frações. Para esta discussão nos apoiamos nas ideias de Llinares e Sánchez (1988), Monteiro e Groenwald (2014) e Silva e Almouloud (2008), dentre outros. Os dados foram coletados por meio da aplicação de um questionário a 358 estudantes de turmas de 7° e 9° ano do ensino fundamental, 1° e 3° ano do ensino médio e graduandos de Cálculo I e II do Curso de Licenciatura em Matemática. Os resultados mostram que o índice de desempenho dos estudantes em cada uma das operações foi insatisfatório, apesar de evidenciar crescimento conforme o nível de escolaridade. A análise dos erros cometidos por eles revela que, por não compreenderem os processos operatórios, aplicam as regras memorizadas sem refletirem sobre a validade ou não daquele conhecimento para a operação que irão realizar, o que sinaliza uma deficiência nos processos de ensino e de aprendizagem desse conteúdo. Palavras-chave: Operações com Frações; Desempenho e Dificuldades; Educação Básica e Superior.
O Conhecimento de futuros professores de Matemática sobre o conceito de função e possíveis implicações para a prática docente
Authors: Peixoto Cintra Fabíola , Fernandes Balieiro Filho Inocêncio
Published: February 2020

O conhecimento dos professores, juntamente com as suas concepções e crenças, é uma importante variável no processo de ensino e de aprendizagem da Matemática que ocorre em suas aulas, uma vez que o conhecimento do professor é a base para o ensino de um determinado conteúdo. Nesta perspectiva, o objetivo da pesquisa aqui apresentada foi investigar os conhecimentos dos futuros professores de Matemática sobre o conceito de Função e apontar suas possíveis implicações para a atividade docente sobre o ensino e a aprendizagem desse conceito. Para isso, tomando como base uma revisão histórica do desenvolvimento do conceito de função e uma revisão bibliográfica sobre o conhecimento dos professores sobre esse conceito, foi elaborado e aplicado um questionário para alunos do último ano de um curso de Licenciatura em Matemática. Os resultados obtidos revelam que, de modo geral, o conceito de função está sendo adequadamente estudado e aprendido por esses alunos, mas ainda existem obstáculos epistemológicos que necessitam ser superados para uma compreensão abrangente do conceito de função, ou seja, há algumas dificuldades de aprendizagem dos alunos em relação ao conceito de função, em virtude da sua variedade de representações, levando aos obstáculos epistemológicos.
Software GeoGebra: uma proposta de ensino para potencializar a interpretação gráfica da função quadrática
Authors: Felipe Elisama de Mendonça , Vieira Edite Resende
Published: February 2020

Neste artigo apresentamos reflexões acerca das ações que os estudantes do 1º ano do Ensino Médio empreenderam em uma sequência de atividades, utilizando a tecnologia digital. Tais reflexões originaram-se de alguns episódios de pesquisa de mestrado profissional, em andamento, que se propôs a analisar em que medida a utilização do software GeoGebra pode auxiliar os alunos na interpretação gráfica da função quadrática. O referencial teórico foi construído a partir da Teoria dos Registros de Representação Semiótica, de Duval; e dos estudos de Bairral sobre os dispositivos móveis na Educação Matemática. No tocante à metodologia de estudo, optamos pela concepção de Zabala referente à sequência didática como prática educativa.  A análise interpretativa revelou que as atividades no respectivo software possibilitaram uma abordagem diferenciada, uma vez que proporcionou reflexões dos discentes relacionadas aos conceitos, às propriedades e à interpretação gráfica da função quadrática. Ficou evidente também que a visualização simultânea das representações gráfica e algébrica, propiciada pelo GeoGebra, favoreceu o estabelecimento de relações entre tais representações pelos alunos. Além disso, os dados sinalizaram que os alunos apresentaram dificuldade em utilizar a língua materna para registrar suas observações sobre o comportamento da função.
The T ‒ R{Y{U}} Family of Distributions of Type I: Some Properties and Applications
Authors: Ampadu Clement Boateng
Published: February 2020

CDF-quantile distributions appeared in [1]. In the present paper, we show it can be used to generalize the T ‒ R{Y} class of distributions [2] to a new family which we call T ‒ R{Y{U}} family of distributions. Some properties and applications associated with the T ‒ R{Y{U}} family of distributions are obtained.
Araştırma-Geliştirme Faaliyetlerinin Firma Karlılığı Üzerine Etkisi: BİST 100 Endeksinde Bir Uygulama
Authors: ÇAĞLAK Emin , MEDER ÇAKIR Hafize
Published: February 2020

Bilim ve teknolojideki
hızlı gelişmeler, firmaları da derinden etkiler hale gelmiştir. Özellikle bilim
ve teknolojinin firmalar arasında rekabette üstünlük aracı haline gelmesi,
firmaların bilim ve teknolojiye yaptığı yatırımları artırmaktadır. Bu
yatırımların firma karına etkisi hem firmalar için, hem de akademik camia için
merak konusudur. Bu çalışmada 1999-2017 dönemi için Bist-100’de yer alan
firmaların Ar-Ge harcamalarıyla firma karlılığı arasındaki ilişkiyi Pedroni
eşbütünleşme testi ile, eşbütünleşme ilişkisinin katsayıları ise DOLS ve FMOLS
eşbütünleşme testleri ile analiz edilmiştir. Yapılan analiz sonucunda
firmaların Ar&Ge harcamaları ile Kar (FAVÖK) rakamlarının uzun dönem
eşbütünleşik olduğu, yani uzun dönemde birlikte hareket ettikleri ve hareket
yönünün pozitif yönlü olduğu ortaya çıkmıştır.
NATO jako cel rosyjskiej aktywności w środowisku informacyjnym państw bałtyckich
Authors: Gałek Beata
Published: February 2020

Russia defines relations with The North Atlantic Treaty Organization (NATO) in the category of strategic competition and struggle for influence. It realizes its goals through various methods and tools, choosing the right combination of them, depending on the entities to which they are dedicated. This article is an attempt to synthetically discuss the activity of the Russian Federation in the information environment of the Baltic States, oriented to the North Atlantic Alliance (NATO), determining its conditions, mechanisms and key narratives. The author considers the fact that the attitude towards NATO is part of Russia‘s global strategy, which aims to revise the international order in a direction that would guarantee a return to its rightful position in the emerging new order.
Obraz Polski w rosyjskiej telewizji
Authors: Krzywdzińska Agata
Published: February 2020

The aim of the article is to analyze the image of Poland on Russian state television in the context of the introduction of a new decommunization law in Poland. The subjects of qualitative analysis are Russian information and journalistic programs devoted to the demolition of Soviet soldiers‘ monuments in Poland. The author hypothesizes about a change in the provision of information and sharpening media narrative. The application of the content analysis of the presenters and guests‘ statements made it possible to obtain an answer on Poland‘s image and current level of political and social talk shows. Selected programs deal not only with the demolition of monuments to Soviet soldiers but are also devoted to current Russian-Polish political relations. The conclusions that can be drawn from the analysis of the programs indicate a significant increase in anti-Polish sentiments, intensified by the leading journalists. Political talk show programs spread a negative and biased picture of Poland in Russian society.
Zarządzanie bezpieczeństwem mniejszości narodowych i etnicznych w Polsce – ocena efektywności
Authors: Kurzępa Elżbieta
Published: February 2020

The issues of national and ethnic minorities are one of the elements of the state‘s security policy as well as the determinant of security on an international scale. This is a particularly important issue at the time of increased migration on the European continent. The purpose of this article is to present the assumptions of the management for Polish national and ethnic minorities‘ safety system, define its legal and institutional framework, as well as assess the effectiveness of this system, taking into account indicators and statistical data developed by the Ministry of the Interior in confrontation with the demands raised by the minority communities. The purpose of the publication is to identify the weakest elements of this system and to indicate their possible causes.
ESTABILIDAD Y CAPACIDAD INHIBITORIA DEL BACTERIÓFAGO ФRSP, AGENTE POTENCIAL PARA EL BIOCONTROL DE Ralstonia solanacearum
Authors: Hernández-Romano Jesús , Mastache-Estrada Luz A. , Molina-Sánchez D. Alfredo , Serrano-Plancarte Rafael , Peña-Barrera Christopher , Chávez-Bejar Ma. Inés , Romero-Martínez Nadia , Lecona-Valera A. Neri
Published: February 2020

La marchitez bacteriana del tomate causada por Ralstonia solanacearumes un problema recurrente en el estado de Morelos y otras partes de México y el mundo. Los métodos actuales para el control de este fitopatógeno bacteriano se basan en el uso de antibióticos que promueven la selección de bacterias resistentes y en agroquímicos que son tóxicos para los humanos, las plantas y el medio ambiente en general. Estos métodos de control degradan la calidad de los suelos al eliminar gran parte de la microbiota normal debido a su amplio espectro de acción. Esta situación pone de manifiesto la necesidad de desarrollar métodos de control alternativos que estén alineados con el desarrollo sostenible de la agricultura. Los bacteriófagos líticos ofrecen una alternativa de control debido a su alta especificidad, baja toxicidad y capacidad de auto-amplificación. En este trabajo se reporta el aislamiento,R. solanacearum . Este bacteriófago pertenece a la familia Mioviridae y genera placas de lisis de aproximadamente 0.5 cm de diámetro después de 24 h de incubación, que continúan aumentando su tamaño con el tiempo. Este bacteriófago tiene la capacidad de aclarar los cultivos líquidos de R. solanacearum a muy pocas multiplicidades de infección y es estable en la solución nutritiva detectada para el cultivo de tomate hidropónico, en un rango de pH de 4 a 11; sin embargo, es inestable en agua ultrapura. Los resultados indicados que el bacteriófago ФRSP presenta características que lo señalan como un buen candidato para ser utilizado como agente de control biológico contra la marcha bacteriana causada por R. solanacearum.
RENDIMIENTO Y CALIDAD DE GRANO EN LÍNEAS MEJORADAS DE FRIJOL CULTIVADAS BAJO RIEGO EN DURANGO, MÉXICO
Authors: Rosales-Serna Rigoberto , Flores-Gallardo Hilario , Nava-Berumen Cynthia A. , Ortiz-Sánchez Ixchel A.
Published: February 2020

El estado de Durango sobresale en la generación de variedades de frijol (Phaseolus vulgaris L.) con alto impacto desde el punto de vista productivo y comercial en México. El presente estudio tuvo como objetivo evaluar 14 líneas mejoradas de frijol común con base en rendimiento, calidad de grano y atributos morfo-agronómicos. Los tipos de líneas fueron: pinto (7), negro opaco (4), alubia (2) y flor de mayo (1), las cuales se compararon con testigos comerciales. La siembra se realizó en Durango, México el 10 de julio de 2015, 07 de julio de 2016 y 21 de junio de 2017. Se utilizó un diseño completamente aleatorio (franjas apareadas), con parcela experimental de seis surcos de 25 m de largo y parcela útil de dos surcos de 5 m de longitud, 0.81 m de separación (8.1 m2) y cinco repeticiones. Se registraron los días a floración (DF), días a madurez fisiológica (DMF), rendimiento, peso de 100 semillas y se realizó análisis químico proximal del grano. Se aplicó análisis de varianza y la comparación de medias se realizó con la prueba de Tukey (P ≤ 0.05). Se observaron valores entre de 44 y 51 días después de siembra (dds) para DF y de entre 96 y 110 dds para DMF. Las líneas de frijol pinto mostraron precocidad a la floración (39 dds) y madurez (100 dds). Se obtuvieron diferencias significativas (de P ≤ 0.0001 a P ≤ 0.04) entre líneas para rendimiento de grano, con un promedio mayor en 2016 (2673 kg ha-1) y variaciones para el tamaño del grano de 45.0 a 51.1 g por 100 semillas. No se detectaron diferencias estadísticamente significativas entre líneas para el contenido de cenizas (3.5 a 5.0 %), proteína cruda (20.5 a 25.1 %), grasa cruda (1.2 a 2.2 %), fibra cruda (1.9 a 4.4 %) y extracto libre de nitrógeno (65.8 a 71.2 %). Se identificaron líneas mejoradas sobresalientes de frijol con adaptación en riego, alto rendimiento y calidad nutricia y comercial del grano.
ESTRUCTURA GENÉTICA DE POBLACIONES DE Pinus cembroides DE LA REGIÓN CENTRAL DE MÉXICO
Authors: Fuentes-Amaro Sandra L. , Legaria-Solano Juan P. , Ramírez-Herrera Carlos
Published: February 2020

Pinus cembroides es el pino piñonero con la más amplia distribución e importancia económica y social en México. El objetivo del presente estudio fue evaluar los niveles y patrones de variación genética de ocho poblaciones de P. cembroides de la región central de México mediante marcadores ISSR (Inter-secuencias simples repetidas). Las poblaciones se distribuyen en dos provincias fisiográficas, la Sierra Madre Oriental y la Mesa del Centro. Los iniciadores utilizados generaron un total de 154 bandas, de las cuales 88.3 % fueron polimórficas a nivel de especie. La diversidad genética promedio en las poblaciones fue alta (He = 0.22), el porcentaje de polimorﬁsmo promedio fue 59.2 %. Los parámetros de diversidad genética fueron más altos en las poblaciones de la Sierra Madre Oriental. La mayor parte de la diversidad genética se encontró dentro de las poblaciones (74 %) y sólo el 26 % entre éstas. De acuerdo con el valor de GST = 0.28, existe alta diferenciación entre las poblaciones. El nivel de flujo génico, considerado como el número de individuos migrantes, fue bajo (Nm = 1.27) entre las poblaciones en las dos regiones. Se encontró baja pero significativa correlación entre la distancia geográfica y la distancia genética de las poblaciones en las dos regiones.
SEMAY OL, NUEVA VARIEDAD DE CÁRTAMO OLEICA
Authors: Borbón-Gracia Alberto , Montoya-Coronado Lope , Ochoa-Espinoza Xochilt M. , Aguilera-Molina Néstor A. , Ávila-Casillas Eva , Cota Barreras Carlos I.
Published: February 2020

El cártamo (Carthamus tinctorius L.) es una especie oleaginosa que presenta gran adaptabilidad por su rusticidad, bajos requerimientos hídricos (Singh et al., 2016) y pocos problemas de plagas. La planta produce semillas con aceite oleico y linoleico de gran calidad;  sin embargo, es un cultivo cuyo potencial de producción no se ha explotado (Ávila et al., 2017). La producción mundial de cártamo en el ciclo 2009-2010 fue de 697 mil toneladas de semilla, la más baja de los últimos siete años. Desde entonces se inició un incremento gradual y en el ciclo 2015-2016 se produjeron 981 mil toneladas, lo que representa un aumento del 40.7 %. En el periodo 2009-2016, México participó con el 16.3 % de la producción mundial (FAOSTAT, 2018).
ANÁLISIS MOLECULAR DE LA DIVERSIDAD GENÉTICA EN GUANÁBANA (Annona muricata L.) MEDIANTE MARCADORES SRAP
Authors: Talamantes-Sandoval Carlos A. , Cortés-Cruz Moisés , Balois-Morales Rosendo , López-Guzmán Graciela G. , Palomino-Hermosillo Yolotzin A.
Published: February 2020

El conocimiento sobre la diversidad genética de las plantas cultivadas es de gran importancia ante escenarios de cambio climático y presencia de plagas y enfermedades. México es considerado uno de los países con más diversidad de especies y con una alta producción agrícola; por lo tanto, los cultivos con baja diversidad genética se encuentran en una situación de vulnerabilidad. El estudio de la diversidad genética en plantas puede abordarse mediante dos metodologías: la caracterización morfológica y la molecular. La primera metodología depende de las interacciones con el ambiente, pudiendo generar datos ambiguos, mientras que la segunda, al detectar secuencias específicas en el ADN, se considera estable y de mayor confianza. El objetivo de esta investigación fue evaluar, por primera vez, la capacidad de los marcadores moleculares SRAP (Polimorfismos Amplificados Relacionados con la Secuencia) para determinar el nivel de diversidad genética de 88 genotipos de guanábana (Annona muricata L.) provenientes de cinco huertos comerciales del municipio de Compostela, Nayarit, México (principal productor a nivel mundial). Se seleccionaron tres combinaciones polimórficas y reproducibles de marcadores SRAP que revelaron 126 alelos y 76.67 % de polimorfismo, el número promedio de bandas observadas con estas combinaciones fue de 42. Los valores de heterocigosidad esperada (He) variaron entre las poblaciones de 0.144 a 0.176. Los análisis de agrupamiento mostraron cuatro grupos principales. Los resultados del análisis molecular de varianza indicaron que la mayor variación se encuentra dentro de las poblaciones (88 %). La información generada de esta investigación puede ser útil para construir estrategias de conservación y manejo del cultivo.