bluuebunny/crossref_metadata_2025 huggingface dataset:
Polymorphism at variable regions (VRs) of porA gene from Neisseria meningitidis strains isolated in Northern Vietnam
Authors: Xuan Thach Tran , Thu Trang Le , Phi Long Trieu , Hoa Nguyen Thi , Quyen Dong Van , Minh Huong Nguyen
Published: July 2020

Meningococcal bacterium Neisseria meningitidis is one of the major causes of meningitis worldwide. Currently in Vietnam, N. meningitidis B and C are the most prevalent invasive serogroups. N. meningitidis expresses two major transmembrane proteins, PorA and PorB, of which PorA showed high levels of polymorphism among strains and has been studied as one component of vaccines against N. meningitidis B. Polymorphisms in porA gene clustered into three variable regions VR1, VR2 and VR3. In this study, we sequenced the entired porA gene of 19 N. meningitidis strains isolated from military units in northern Vietnam during the period 2008 – 2017 in order to: (1) evaluate the polymorphism of porA gene at nucleotide level and predict its immuno-reactivity from annotated amino acide sequences; and (2) compare porA variants of Vietnamese strains with known strains worldwide. Our results showed a high level of polymorphisms among Vietnamese strains, with the highest polymorphism found in VR1, followed by VR2 and VR3. Notably, 5/19 strains in this study showed novel variants at VR2 with unknown immunological reactivity. This result suggested potential novel immunological characteristics of meningococcal strains from Vietnam.
Screening and identification of actinomycetes having antimicrobial activity isolated from marine organisms and sediment samples in Ly Son island, Quang Ngai
Authors: Thanh Hoa Tran Thi , Hong Minh Le Thi , Quyen Vu Thi , Mai Anh Nguyen , Mai Huong Doan Thi , Van Minh Chau , Van Cuong Pham
Published: July 2020

The discovery of bioactive compounds from marine microorganisms for drug development has been currently widely studied. In which marine actinomycetes are highlighted as a potential source in finding antibiotics as well as substances with biological activity in general. The objective of this study is to isolate and screen the actinomycetes strains with antibacterial activity from the marine environment. Sixty one actinomycetes were isolated from 80 samples of marine organisms and sediments collected from Ly Son Island, Quang Ngai. The strains were fermented in the A1 medium and the culture broths were extracted by ethyl acetate and vacuum rotary evaporation to produce crude extracts. Antimicrobial activity of the extracts were carried out on 7 strains of tested microorganisms, including three strains of Gram-negative bacteria (Escherichia coli ATCC25922, Pseudomonas aeruginosa ATCC27853, Salmonella enterica ATCC13076), three Gram-positive strains (Enterococcus faecalis ATCC29212, Staphylococus aureus ATCC25923, Bacillus cereus ATCC 13245), and yeast Candida albicans ATCC10231. The screening results showed that three strains with the highest antimicrobial activity (G330, G336 and G361) were capable of inhibiting 5 of the 7 tested microorganisms with Minimum Inhibitory Concentration (MIC) values ranging from 4 to 256 μg/mL, depending on each tested strain. Specifically, all three strains inhibited C. albicans ATCC10231 and three Gram-positive strains (E. faecalis ATCC29212, S. aureus ATCC25923, B. cereus ATCC 13245). In addition, G330 and G336 also showed the inhibitory activity to Gram negative strain S. enterica ATCC13076 with value of 256 µg/mL, G361 has a good inhibitory ability for E. coli ATCC25922 with MIC value of 8 µg/mL. The strains were identified by morphological and the 16S rRNA gene sequences. The results showed that 16S rRNA sequences of the strains had over 99% similarity to the 16S rRNA sequences on the GeneBank database, strains G336 and G361 belonged to the genus Salinispora, whereas strain G330 belonged to the genus Streptomyces. These results showed that marine environment has a great potential in solation of actinomycetes strains for the search for antibacterial substances as well as other biologically active compounds.
Effect of Serrating Abutment-Implant Mating Surface on Torque Stability of Implant-Abutment Connection, Before and After Cyclic Loading
Authors: Rezayani Vida , Alikhasi Marzieh , Monzavi Abbas
Published: July 2020

This study evaluated the effect of adding serration to the abutment-implant connection on torque maintenance before and after loading. Two implant systems with the same dimensions and connection design (internal 8° Morse taper octagon) were selected: one with nonserrated abutments (Simple line II) and the other one with serrated abutments (F & B). The removal torque value (RTV) was measured in 2 groups for each system: one group with one-piece abutments and the other group with 2-piece abutments, before and after cyclic loading (n = 10 in each group). The initial RTV of the abutment screw was measured with a digital torque meter. Each abutment received a cement-retained metal crown with 30° occlusal surface. Cyclic axial peak load of 75 ± 5 N was applied to the implants for 500 000 cycles at 1 Hz. The post-load RTV was then measured. Two-way and repeated-measures analysis of variance (ANOVA), and independent t test were applied to assess the effects of cyclic loading, connection design, abutment type, and their interaction on the percentage of torque loss (α = .05). Two-way ANOVA showed that serration of mating surfaces had a significant effect on torque maintenance before (P < .001) and after (P = .004) cyclic loading. Repeated-measures ANOVA also showed that loading had a significant effect on the torque loss percentage (P < .01). Comparison of the groups with t test showed that the torque loss of the serrated groups was lower than that of non- serrated groups. Despite the limitations of this study, the stability of the implant-abutment connection in the serrated design was higher than that of non-serrated group.
DEVELOPMENT OF THE TECHNOLOGY OF SOYA FLOUR ENRICHED WITH IODINE
Authors: Beletska Ya. , Plotnikova R. , Bakirov M. , Vereshchynskyi O.
Published: July 2020

A research on developing a technology of iodine-enriched soya flour has been conducted. The technology developed will allow the body to receive organic forms of this micronutrient, the deficiency in which causes thyroid disorders in 40% of Ukrainians and 35% of people throughout Europe. The research has shown that promising soya bean varieties to be enriched with iodine are the early-ripening varieties Almaz, Anzhelika, Kyivska 98, Faeton, Medeya, PSV 808, Podyaka, Khortytsya, Yug 30, Rusa. They are the highest in protein (42.75% on average), the maximum content of which is necessary for iodine accumulation. Besides, their cropping period is short (up to 95–105 days), which is cost-effective for a manufacturing enterprise, because there is no overlapping with the winter crops sowing time and thus, there are no periods when cultivation areas remain idle. The following parameters of steeping soya beans have been found rational: the iodine concentration in the solution 98-100 μg/g, the duration of steeping 48 hours. The mass fraction of iodine in the steeped soya beans is 126 μg/g. Longer steeping leads to microbiological spoilage of sprouted soya beans. It has been determined how iodine is distributed in cotyledons, sprouts, seed coats, and whole sprouted soya beans. This has allowed establishing that in a whole sprouted soya bean of the early-ripening soya variety Almaz, the iodine content is 126 μg/g, of which 123 μg/g is accumulated in the cotyledons of a seed, and 3 μg/g in the sprouts and the seed coats. This indicates a high level of iodine conversion into the organic form when soya seeds are steeped in potassium iodide solution. A technology of manufacturing iodine-enriched flour from sprouted soya beans has been developed. It differs from the control one in that soya seeds, washed and disinfected, are soaked in potassium iodide solution (with the iodine concentration 98–100 μg/g and the hydromodulus 1:2) for 48 hours at the solution temperature 14-16°С. Flour from sprouted soya beans contains 126 μg/g of iodine. The technology suggested can be used at hotel and catering enterprises, in sanatoria and health centres, to treat iodine-deficiency disorders, and to make food for people who need special dietetic nutrition.
SPECIFIC FEATURES OF NITROGEN METABOLISM DURING FERMENTATION OF MUST FROM WHITE GRAPE VARIETIES GROWN IN THE ODESSA REGION
Authors: Tkachenko O. , Kananykhina O. , Suhachenko T. , Turpurova T. , Titlova O.
Published: July 2020

For wine quality management, nitrogen metabolism should be considered as a key process in the system “grape – wine.” Nitrogen is one of the dominant elements a grapevine receives from the soil. It is important in many biological processes of the plant itself and of the microorganisms involved in fermentation. Nitrogen-containing compounds are nutrients necessary for yeast growth, in particular, for stable fermentation. This group of compounds directly and indirectly affects the aromatic and taste qualities of wine during its maturation and largely determines its stability. Nitrogen compounds are transferred to wine directly from grapes and yeast during fermentation. Since their role in the formation and maturation of wine is significant, it is highly important to regulate their metabolism in the fermenting must. On analysing literature references and summarising the information on the metabolism of nitric substances, a scheme has been developed reflecting how these substances influence the formation of the quality characteristics of grape wines. The paper presents the results of studying the metabolism of total nitrogen and amino nitrogen in grape must during its fermentation. The grape variety considered in the research was Sukholimansky White bred by the National Science Centre “Tairov Institute of Viticulture and Winemaking” and harvested in 2015–2017. It has been established that nitrogen metabolism during fermentation does not depend on the feedings added. However, the yeast race affects the physicochemical parameters, namely the content of volatile acids. It has been observed that during fermentation, the amine nitrogen concentration decreases by 90% and the total nitrogen concentration by 40–50%. Regarding the factors that effect on the quality characteristics of wines produced in the South of Ukraine, the physicochemical parameters of wine materials can be improved by using the active dry yeast Vitilevure Quartz and the nutritional supplements Actiferm 1 and Actiferm 2, in combination with aeration. This allows revealing fruity aromas, and achieving the right acidity and harmony of taste due to the presence of the descriptors (butter, apple, peach, apricot, and geranium) characteristic of the grape variety Sukholimansky White.
APPLICATION OF THE IMPEDANCE METHOD FOR DETERMINATION OF MONOSODIUM GLUTAMATE IN FOOD PRODUCTS
Authors: Slyva Yu. , Pokhodylo E.
Published: July 2020

The article presents the results of studying how impedance analysis can be used for determination of monosodium glutamate in order to identify food fraud. We have suggested that the parameters of complex conductivity (admittance) of a two-terminal circuit could allow detecting monosodium glutamate (E 621), an additive used in the food industry to enrich the taste. The method involves passing current of different frequencies through solid foodstuffs and a cell with liquid foodstuffs, measuring the electrical conductivity, and determining and analysing the frequency dependence of admittance. The active G component and the reactive B component of the admittance have been measured at different frequencies, from 100 Hz to 100 kHz. For the experiment, food samples were prepared in accordance with the Codex Alimentarius recommendations for the dosage of the food additive E 621: orange juice with monosodium glutamate added in the amount of 0.3%, and mashed potatoes with glutamate added in the amount of 1%, of the total weight of the products. The temperature of the tested products was 22 ± 0.2°С. The results of the studies have shown the dependences of the admittance components on the frequency for the control samples of juice and mashed potatoes and for the samples with monosodium glutamate added. The dependence of the active component and the reactive component of the foodstuff admittance have been established, with monosodium glutamate (added in the above-specified proportion) and without it. The difference is in how the dependences change in their nature. The monosodium glutamate curves both in juice and in mashed potatoes are similar. The samples containing monosodium glutamate have far higher values of the active and reactive admittance component than the control samples do, with a distinct peak of the reactive component characteristic. Therefore, impedance analysis is a possible method to detect quickly the flavour enhancer monosodium glutamate in foods of different consistency and thus identify food fraud.
Student Agency around Climate Action: a curriculum response
Authors: Holdsworth Roger
Published: July 2020

Students around the world have led protests over inaction on climate change. They have done this through 'climate change strikes'. These actions raise larger questions about young people's perception of the relevance of schooling to their concerns. What should and could be the response
of schools? What would it take for students to recognise that schools were supporting them to not only know about these concerns, but to act effectively around them? What would it take for education to remain relevant for all young people and be seen to be equipping them with the knowledge,
skills and attitudes to make those changes today? This article suggests some principles, and some possible curriculum approaches, around renegotiating the purposes of education with young people. It asks of young people: "What would it take for this school to address our issues of concern,
so that you didn't have to walk out?"
Awareness raising workshop for nursing students on the elderly with Alzheimer’s disease: contributions to education
Authors: Barros Maurício , Zamberlan Claudia , Gehlen Maria Helena , Rosa Paloma Horbach da , Ilha Silomar
Published: July 2020

ABSTRACT Objective: To describe the contribution of an awareness-raising workshop for nursing students on Alzheimer’s disease in the context of the elderly/family. Methods: Strategic action-research developed with 15 university students from the sixth to the eighth semester of Nursing at a university institution in the Rio Grande do Sul. The data collected through semi-structured interviews, before and after an awareness-raising workshop on Alzheimer’s disease in elderly/family, were subjected to thematic content analysis. Results: Six categories were identified that concern (Mis) perception of Alzheimer’s disease in the context of elderly/ family, from the characterization; risk factors; diagnosis; treatment of Alzheimer’s disease; from care to family members/caregivers; and care strategies for the elderly with Alzheimer’s disease. Conclusion: The awareness-raising workshop enabled the students to broaden and deepen the knowledge on the theme of Alzheimer’s disease in the elderly.
Influence of Root Canal Preparation on Formation of Dentinal Microcracks: A Systematic Review
Authors: Valle Alânia Dalla , Dotto Lara , Morgental Renata Dornelles , Pereira-Cenci Tatiana , Pereira Gabriel Kalil da Rocha , Sarkis-Onofre Rafael
Published: July 2020

Abstract The effect of root canal preparation technique on microcrack initiation is a controversial issue. This systematic review aimed to assess the role of root canal preparation techniques with different kinematics (manual, rotary, reciprocating, adaptive, self-adjusting file) on microcrack initiation. In vitro and in situ studies comparing the influence of at least two different root canal preparation techniques on the initiation of dentin microcracks were searched in PubMed/MEDLINE and SCOPUS up to June 5, 2018 without language and period restriction. Two authors independently reviewed all identified titles and abstracts for eligibility. Tables were generated to summarize the included studies, and the included studies were assessed for bias. Fifty-four (n=54) articles met the eligibility criteria. The results were classified according to the method used for microcrack evaluation, and most studies that used micro-computed tomography showed no formation of new cracks after root canal preparation. In general, the instrumentation techniques induced microcrack formation when the methods were destructive, irrespective of kinematics. In relation to the apex region, when the preparation working length was set as the root canal length subtracted of 1 mm, the risk of microcrack initiation reduces. The majority of the included studies had low risk of bias for all assessed domains. Our results seem to indicate that the various root canal preparation techniques considered in this study will not cause damage to the dental structure when adequately employed and the proper methodology is applied.
Influence of Acid Etching and Universal Adhesives on the Bond Strength to Dentin
Authors: Campos Maria de Fátima T. P. , Moura Dayanne Monielle Duarte , Borges Boniek Castillo Dutra , Assuncao Isauremi Vieira de , Caldas Marilia Regalado Galvão Rabelo , Platt Jeffrey A. , Özcan Mutlu , Souza Rodrigo Othávio de Assunção e
Published: July 2020

Abstract The purpose of this study was to evaluate the influence of the application mode of three universal adhesive systems on interfacial physical properties of indirect composite restorations adhesively cemented to dentin cavities. Seventy-eight bovine lower incisors were selected and a slice of dentin (thickness: 2 mm) between the buccal surface and pulp chamber was obtained for each tooth. Conical cavities were made on this surface. The internal walls of the cavities were then coated with a hydrophilic gel, filled with composite resin and photopolymerized. The dentin/cone sets were divided into 6 groups (n=10) according to type of universal adhesive (TETRI: Tetric N Bond, FUT: Futura Bond U, SBU: Single Bond Universal) and acid etching on dentin (A: with acid etching; WA: without acid etching). The acid etching and the adhesive systems were applied to the surface of the dentin. All composite resin cones were sandblasted (Al2O3, 20 s) and silanized. After surface treatment, the cones were cemented (RelyX Ultimate) into the dentin cavity and photopolymerized. After thermocycling (10,000 cycles), samples were submitted to marginal adaptation analysis (using caries detector dye), push-out test (0.5 mm/min), and failure mode analysis. Additional samples were prepared for nanoleakage analysis (SEM). The data (MPa) were analyzed by two-way ANOVA and Tukey’s post-test (5%). The groups in which the dentin was acid etched showed significantly lower bond strength values in the push-out test (p<0.01). Dentin acid etching significantly reduced the bond strength between universal adhesive systems and dentin in indirect restorative procedures.
Overexpression of HIF-1α and Morphological Alterations in the Tongue of Rats Exposed To Secondhand Smoke
Authors: Amaral Eleonora de Paula , Rosa Rodrigo César , Etchebehere Renata Margarida , Nogueira Ruchele Dias , Volpon José Batista , Rodrigues Denise Bertulucci Rocha , Pereira Sanívia Aparecida de Lima
Published: July 2020

Abstract Smoking is a risk factor for serious health problems and is associated with several changes in the tissues of the oral cavity. The aim of this study was to evaluate the collagen percentage, mast cells density, intensity of immunolabeled cells by anti-HIF-1α in the musculature lingual of rats exposed to secondhand smoke. Twenty-seven female Wistar albino rats were divided into three groups: rats not exposed to tobacco smoke inhalation (Control group) (n=7); rats exposed to smoke inhalation for 30 days (TAB 30) (n=10); and rats exposed to smoke inhalation for 45 days (TAB 45) (n=10). Subsequently, the animals were submitted to euthanasia and removal of the tongue for histological and immunohistochemistry processing and analysis. In the groups TAB 30 and TAB 45 there were a lower percentage of collagen, a higher density of mast cells and a greater intensity of anti-HIF-1α immunolabeled cells compared to Control group. There was also a positive and significant correlation between the percentage of collagen and mast cell density. There was not significative difference between TAB 30 e TAB 45 in any of the parameters evaluated. Therefore, the exposure of rats to secondhand smoke for 45 days causes decrease in perimysial collagen fibers, increase in the number of mast cells and increase in the immunolabeling for HIF-1α in lingual muscle cells. The present study was the first to evaluate the percentage of collagen, mast cell density and immunostaining for HIF-1α in rat tongues exposed to tobacco smoke.
Lateral Luxation of Incisor - A Case Report of Using a New Cone-Beam Computed Tomography Software and Reposition Guideline
Authors: Soares Priscilla Barbosa Ferreira , Vilela Andomar Bruno Fernandes , Moura Camilla Christian Gomes , Estrela Carlos , Bueno Mike R , Soares Carlos José
Published: July 2020

Abstract Lateral luxation injuries are one of the most severe periodontal injuries in dental trauma. The correct diagnosis followed by repositioning of the tooth on the right position is fundamental for the periodontal ligament healing. This study reported a clinical case of lateral luxation of maxillary central incisor involving a new cone beam computed tomography (CBCT) software for reconstruction (e-Vol DX) to confirm the lateral luxation after no conclusive dental trauma injury definition by using conventional exam. The lateral luxation injury was digitally reduced by insertion of tooth back to its alveolus, and at the same session, the tooth was stabilized with a rigid splint and further changed to a semi-rigid nylon splint. During the pulpal status monitoring, the pulp was diagnosed necrotic, then the root canal was treated to prevent root resorption. External office-bleaching and restorative procedure was performed. The 4-years follow up and new imaging exam and digital reconstruction confirmed bone healing and no complication. CBCT images analyzed by eVol DX can be used to determine and to guide lateral luxation treatment.
Effect of Topical 2% Eucalyptus Extract on 5-FU-Induced Oral Mucositis in Male Golden Hamsters
Authors: Tanideh Nader , Badie Arash , Habibagahi Raha , koohi-Hosseinabadi Omid , Haghnegahdar Sara , Andisheh-Tadbir Azadeh
Published: July 2020

Abstract Oral mucositis is a common inflammatory complication among patients with cancer. This study evaluated the histopathological, stereological, and antioxidant markers of 2% eucalyptus extract in induced oral mucositis in male golden hamsters. In this animal study, oral mucositis was induced in 30 male golden hamsters by 5-FU (60 mg/kg) on days 0, 5, and 10 of the study. The cheek pouch was scratched with a sterile needle once daily on days 3 and 4. On days 14-17, 2% eucalyptus hydroalcoholic extract gel and Calendula officinalis extract gel groups were treated and then compared with a non-treated control group. The histopathological and stereological scores and the pouch content of malondialdehyde, as well as the activities of glutathione and myeloperoxidase in the pouch tissue, were evaluated. Histopathologic scores of oral mucositis were lower in the eucalyptus gel group than those of the calendula and control groups (p<0.05). Also, a lower malondialdehyde level and higher myeloperoxidase and glutathione activities were detected in the eucalyptus group in comparison to the calendula and control groups (p<0.001). The thickness of the mucosa and submucosa increased in the eucalyptus group. The numerical density of the fibroblast and the volume density of the collagen significantly increased in the eucalyptus group. In conclusion, the use of eucalyptus hydroalcoholic extract may be associated with reduced intensity of oral mucositis, diminished concentration of malondialdehyde, increased activity of myeloperoxidase and glutathione, increased volume of mucosa and submucosa, increased fibroblast and collagen in the induced oral mucositis in golden hamsters undergoing 5-FU consumption.
Over-the-Counter Tooth Whitening Agents: A Review of Literature
Authors: Naidu Arti. S. , Bennani Vincent , Brunton John M. Aarts Paul , Brunton Paul
Published: July 2020

Abstract There is an increased accessibility of over-the-counter (OTC) whitening agents with very little data in the literature regarding their effectiveness. This review was done to determine their effectiveness of the predominant OTC whitening agents from 2006 until 2018 where a comparison of each agent was made with a placebo, no treatment or with other OTC whitening agents. The major categories of OTC whitening agents such as dentifrices, whitening strips and paint on gels. Dentist prescribed bleaching applied at home and in-office bleaching studies and studies that demonstrated whitening products to participants were excluded. Articles were searched for in the databases of Medline (Ovid), PubMed, the Cochrane Library and Cochrane Central Register of Controlled Trials. Twenty-four articles were included in the systematic review and the quality of studies was determined by the GRADE (Grading of Recommendations, Assessment, Development and Evaluations) ranking criteria. Compared to other OTC, strips are reported to be effective. Two studies determined whitening strips to be effective. Whitening strips have been shown to be effective when compared with placebos and other OTC whitening agents. Dentifrices are effective in changing the shade of the tooth “by removing extrinsic stains” when compared to a placebo and non-whitening dentifrices, but they are not as effective in comparison to whitening strips. There is a lack of evidence with regards to the effectiveness of paint-on gels. While there is some evidence that OTC can alter shade in the short term, there is a need for better-designed studies.
Fluoride Concentration in SDF Commercial Products and Their Bioavailability with Demineralized Dentine
Authors: Soares-Yoshikawa Aline Laignier , Cury Jaime Aparecido , Tabchoury Cínthia Pereira Machado
Published: July 2020

Abstract The aim of this in vitro study was to determine the fluoride concentration in silver diamine fluoride (SDF) products and their bioavailability with demineralized dentine. The products evaluated (expected fluoride concentrations) were: I: Saforide 38% (45,283 ppm F); II: Advantage Arrest 38.3 to 43.2% (45,283 to 51,013 ppm F); III: Ancárie 12% (14,100 ppm F); IV: Ancárie 30% (35,400 ppm F), V: Cariestop 12% (14,100 ppm F) and VI: Cariestop 30% (35,400 ppm F). The fluoride concentration was evaluated using an ion-specific electrode (ISE) by direct technique, which was confirmed after microdiffusion. The pH of the products was determined with a pH test strip. For the bioavailability test, demineralized dentine slabs were treated with one of the products for 1 min. Loosely (CaF2-like) and firmly-bound fluoride (FAp) were determined. The fluoride concentration found in the products (mean±SD; ppm F) by the ISE direct technique was: I:53,491±554; II:57,249±1,851; III:4,814±268; IV:5,726±43; V:10,145±468; VI:11,858±575; these values were confirmed after microdiffusion (t-test; p>0.05) and disagree with the declared by the manufacturers. The pH of Ancárie 12 and 30% was 6.0 and 4.5, respectively, in disagreement with the alkaline pH expected for SDF solution and found in the other products evaluated. There was no correlation between either CaF2-like (r=0.221; p=0.337) or FAp (r=-0.144; p=0.830) formed in demineralized dentine and fluoride concentration found in the products. The problems of pH and fluoride concentration found in available professional commercial SDF products suggest that they are not under sanitary surveillance.
HUMAN RESOURCES PRACTICES AND ORGANIZATIONAL COMMITMENT: CONNECTING THE CONSTRUCTS IN A PUBLIC ORGANIZATION
Authors: OLIVEIRA HELOÍZA H. , HONÓRIO LUIZ C.
Published: July 2020

ABSTRACT Purpose: This article aims to describe and analyze the relationship between human resources practices and organizational commitment in a large public urban sanitation company. Originality/value: It has been found that most human resources practices significantly influence organizational commitment, showing that the affective and normative commitment is the most affected and, on a weaker scale, there is the continuance commitment. Design/methodology/approach: The survey was conducted with 349 employees whose formulated hypotheses were verified by multiple regression. Findings: The results indicated a predominance of affective commitment of employees, greater agreement with the practice of human resources associated with benefits and disagreement with the career planning regarding the policies related to the internal selection process, self-development, compensation policy and the promotion process. The multiple regression analysis allowed to confirm the hypotheses postulated, revealing a more significant positive relationship between human resources practices with the types of affective and normative commitment when compared to the continuance commitment. Organizational commitment of the affective type proved to be positively influenced by the human resources practices associated with career planning and benefits, while the commitment of the normative type was positively more induced by the human resources practice related to training and development. Despite the fact that the article revealed results that contribute to the academy, future research must be carried out to improve the relationship between the constructs treated in this study.
Resiliência eleitoral dos presidentes latino-americanos após a crise de 2008 e o refluxo da onda rosa
Authors: Corrêa Diego Sanches
Published: July 2020

RESUMO Introdução: Pretende-se explicar a capacidade de sobrevivência eleitoral dos presidentes latino-americanos em condições de instabilidade econômica e política. Materiais e Métodos: Foram testadas três hipóteses. Presidentes possuem maior capacidade de sobreviver eleitoralmente quando: 1) controlam o Legislativo; 2) controlam a sociedade civil e 3) são alinhados à esquerda radical. As variáveis utilizadas pelo trabalho são binárias e o método utilizado foi a Análise Comparada Qualitativa. Resultados: Por um lado, nenhuma das variáveis independentes é, isoladamente, condição necessária ou suficiente para a sobrevivência eleitoral dos presidentes latino-americanos. Por outro lado, elas demonstram que o controle do Legislativo e da sociedade civil garante a sobrevivência de presidentes alinhados a qualquer ideologia e que presidentes radicais de esquerda sobrevivem politicamente mesmo na ausência destes controles. Discussão: Os resultados ajudam a explicar um fato intrigante da conjuntura política latino-americana pós-crise global de 2008: a forte resiliência de alguns presidentes em situações altamente adversas. Enquanto alternâncias de poder ocorreram em diversos países governados pelo mesmo partido há mais de uma década, em outros mecanismos de accountability eleitoral parecem ter falhado para promover rotatividade de governo.
Productivity and quality of Mombasa grass under fertilization with pig deep-litter and NPK
Authors: Guerrero Marina da C. , Sousa Tiago R. de , Oliveira Saulo A. de , Caldeira Rômulo R. , Pelá Adilson
Published: July 2020

ABSTRACT The use of pig deep-litter (PDL) in pasture fertilization can be an important alternative from an environmental and economic point of view. This study was conducted to evaluate the fertilization with PDL exclusively or in association with mineral fertilizers on the quality and productivity of Panicum maximum cv. Mombasa. The experiment was carried out in Ipameri, GO, Brazil. The design was a randomized block design in a 2 x 5 factorial scheme with four repetitions, in plots of 24 m². The doses of PDL (0; 5; 10; 15 and 20 Mg ha-1) were tested, with or without fertilization with NPK (50 kg ha-1 of P2O5, 10 kg ha-1 of K2O and 10 kg ha-1 of N). The organic fertilizer was applied broadcast at the planting of the pasture, and the mineral fertilizers were split and applied at planting and as topdressing. Dry mass, crude protein, acid detergent fiber and neutral detergent fiber were evaluated. PDL doses associated with mineral fertilization led to linear increases from 52 to 282% in the analyzed variables and better bromatological composition. PDL application is beneficial to the production of pastures, and increasing applications up to the PDL dose of 20 Mg ha-1 associated with mineral fertilization promoted better quantitative and qualitative results. With exclusive fertilization with PDL, the gains in quality and productivity were more modest.
Physiological quality of maize seeds produced under soil water deficit conditions
Authors: Machado Fernando H. B. , David Andréia M. S. de S. , Santos Silvânio R. dos , Figueiredo Josiane C. , Silva Cleisson D. da , Nobre Danúbia A. C.
Published: July 2020

ABSTRACT Crop strategies focused on the rational use of water are required in semiarid regions. Thus, the objective of this work was to evaluate the physiological quality of maize seeds produced under soil water deficit conditions. Five irrigation water depth were established, based on the field capacity (100, 85, 70, 55 and 40%), to control the available water for two maize hybrids (2B-587 and DKB-390). A randomized block design was used, with a split-plot arrangement and four repetitions. The plots consisted of irrigation water depths, and the subplots consisted of maize hybrids. The seed water concentration, germination, and vigor were determined after the harvest, using data from first germination counting, seedling emergence, germination speed index, seedling length, and accelerated aging, electrical conductivity, and modified cold tests. The maize hybrid DKB-390 showed better physiological potential under the soil water deficit conditions evaluated. The irrigation water depths lower than 70% of field capacity resulted in decreases in soil water contents and affected negatively the physiological quality of the maize seeds produced.
Tolerance of precocious dwarf cashew clones to salt stress during rootstock formation stage
Authors: Lima Geovani S. de , Silva Jailson B. da , Souza Leandro de P. , Nobre Reginaldo G. , Soares Lauriane A. dos A. , Gheyi Hans R.
Published: July 2020

ABSTRACT This study was conducted to evaluate the tolerance of precocious dwarf cashew clones to irrigation with waters of different salinity levels during rootstock formation. The experimental design consisted of randomized blocks, arranged in a 5 x 3 factorial scheme, corresponding to five levels of electrical conductivity of irrigation water (0.4; 1.2; 2.0; 2.8 and 3.6 dS m-1) and three clones of precocious dwarf cashew (Faga 11, Embrapa 51, CCP 76), with three replicates. Water salinity above 0.4 dS m-1 inhibited chlorophyll synthesis and growth, but led to cashew seedlings with the Dickson Quality Index (DQI) higher than the acceptable limit. Based on the relative yield of the total dry mass, the clones Faga 11, Embrapa 51 and CCP 76, at the highest salinity level studied, were classified as moderately sensitive, sensitive and moderately tolerant, respectively. There was interaction between water salinity and precocious dwarf cashew clones for chlorophyll a content, chlorophyll b content and DQI at 75 days after sowing.
Yield and technological quality of sugarcane under irrigation depths and nitrogen fertilization
Authors: Mendoça Marcos F. de , Dantas Neto José , Silva Patrícia F. da , Oliveira Emídio C. A. de
Published: July 2020

ABSTRACT The objective of this study was to evaluate the stalk yield, sugar yield and technological quality of two varieties of sugarcane under different irrigation depths and nitrogen doses. The experiment was conducted in two consecutive years (2015 and 2016) at Olho D’Água Farm, in Itambé, Pernambuco, Brazil. The experimental design was randomized blocks in the split-split-strip-plot scheme, with four replicates. Treatments consisted of four irrigation depths (L1 = 12, L2 = 45, L3 = 100 and L4 = 125% of the crop evapotranspiration - ETc, plant cane) and (L1 = 10, L2 = 40, L3 = 100 and L4 = 125% ETc, ratoon cane), four doses of nitrogen (N1 = 0, N2 = 50, N3 = 100 and N4 = 200 kg ha-1 of N) and two varieties of sugarcane (RB92579 and RB002754). Sugarcane plants irrigated with the highest depths of 1,324.06 and 1,242.3 mm in the plant cane and ratoon cane cycles respectively produced 38.40 and 49.14 t of stalks ha-1 and 0.48 and 1.82 t of sugar ha-1 more, compared to those irrigated with the lowest depths of 124.06 and 99.4 mm. The highest stalk yield was obtained with the combination of 120.7 kg ha-1 of N and 1266.6 mm of irrigation depth. Sugarcane technological quality is positively correlated with the increase of the irrigation depth in the plant cane and ratoon cane cycles and negatively correlated with nitrogen.
Critical velocity estimates running velocity in a 10-km running race in recreational runners
Authors: Corrêa Hugo Luca , Ribeiro Heitor Siqueira , Cunha Vinícius Albuquerque , Baiao Victor Mota , Melo Wallace Muniz de , Ferreira Renato N. Braga , Viana Talles H. Brito , Neves Rodrigo V. Passos , Ferreira Aparecido Pimentel
Published: July 2020

Abstract The aim of this study was to compare the estimated running velocity in a critical velocity (CV) test with the real running velocity in a 10-km race. This is a cross-sectional study with a convenience sample of 34 runners, 20 males and 14 females (42,4 ± 11,0). The participants attended two days of testing and one day to participate in an official 10-km race. During the visits, the following tests were performed: i) 400-meter running track test and ii) 2000 meter running track test. They were randomly selected and held in official athletics track with at least 48 hours rest between them. The athletes were instructed to participate in the study properly recovered, fed and hydrated. The CV was calculated as the linear relation between distance and race time, corresponding to the slope of the linear regression line. Both tests occurred in similar climatic situations. We found good agreement between the velocities estimated through the CV test and the real running velocity of a 10-km race. Although there was a difference in velocities estimated by the CV test and the real 10-km race, the variation delta was low. Thus, these data indicate that the CV test seems to be a good tool for estimating the velocity of a 10-km race. The CV determined in the field with two fixed distances 400 and 2000 meter was valid to estimate the running velocity of a 10-km race.
Scientific knowledge in the field of Physical Education: paths to complexity
Authors: Silva Carolina Fernandes da
Published: July 2020

Abstract This manuscript aims to discuss possibilities for the incorporation of complex thinking in the scientific field of Physical Education (PE) in Brazil. In dialogue with philosophers who theorize about complex thinking, we analyze the ordering of scientific knowledge structures in Brazil, such as the organization in areas and lines of PE Graduate Programs (PPGs) exposed on their websites and the Coordination for the Improvement of Higher Education Personnel (CAPES) document. Regarding sociocultural transformations that occurred throughout the 20th century, science perceives the limits of knowledge, where divisions in disciplines seem to be insufficient to investigate the complexity of problems, giving rise to the epistemological perspective of complex thinking. PE is organized in a multidisciplinary and interdisciplinary way, but with gaps between human sciences and natural sciences. Therefore, seeking strategies to reduce borders is emerging for the area to adapt to the new scientific needs of the 21st century.
Technologies used by nursing managers in Portuguese hospitals
Authors: Martins Maria Manuela Ferreira Pereira da Silva , Trindade Letícia de Lima , Vandresen Lara , Leite Maria José Mesquita Gomes Correia , Pereira Carla Marina Gomes , Landeiro Maria José Lumini
Published: July 2020

ABSTRACT Objective: To analyze the association between the characteristics of nurse managers and the use of information technologies in Portuguese hospitals. Method: A cross-sectional quantitative study involving 138 nurse managers. The managers answered a questionnaire about the use of key information and communication technologies in management. The findings were submitted to descriptive and analytical statistical analysis. Results: Women predominated, with more than 25 years in the profession and more than ten in management. It showed that the managers identify the utility and easiness of a singular way for each technology, the use of which is influenced by the nurses' socio-occupational characteristics, their gender, specialization (having it or not), and the time of experience in services and management being significant. Conclusion: The study contributes to explain and predict the intention to use, as well as the mastery of technologies in hospital management, providing support of choice in the management of services and need for qualification for use.
Assessment of the incidence and preventability of adverse events in hospitals: an integrative review
Authors: Zanetti Ariane Cristina Barboza , Gabriel Carmen Silvia , Dias Bruna Moreno , Bernardes Andrea , Moura André Almeida de , Gabriel Andréia Boldrini , Lima Júnior Antônio José de
Published: July 2020

ABSTRACT Objective: To highlight the scientific production related to the use of the retrospective chart review methods to assess the incidence and preventability of adverse events in hospitals. Method: An integrative review in the MEDLINE, LILACS, SCOPUS, Web of Science and EMBASE databases conducted in May 2019 with the following guiding question: What is known about the retrospective chart review methods to assess the incidence and preventability of adverse events in hospitals? Subsequently, the categorization, synthesis, and classification of the evidence levels of the included publications were performed. Results: In the 13 selected studies, the instruments adopted to assess the occurrence of adverse events were the Harvard Medical Practice Study, the Canadian Adverse Event Study, the Quality in Australian Health Care Study, and the Global Trigger Tool. Incidence ranged from 5.7 to 14.2%, while preventability ranged from 31 to 83%. Conclusion: Differences in incidence and preventability were found, showing different results in the quality of care provided, the information registered in medical records, the screening criteria used, and the assessments of the reviewers.
Practices in the healthcare of children and adolescents with leprosy: the discourse of professionals
Authors: Oliveira Joana D’arc Conceição Pinheiro de , Marinus Maria Wanderleya de Lavor Coriolano , Monteiro Estela Maria Leite Meirelles
Published: July 2020

ABSTRACT Objective: To analyze the health care practices of children and adolescents with leprosy from the speeches of health professionals. Method: Qualitative research conducted with 23 health professionals who attended children and adolescents with leprosy in primary and secondary care in a municipality in the state of Pernambuco, from April to July 2018, through semi-structured interviews. Data were subjected to content analysis. Results: The practice of health care was apprehended from the following categories of analysis: "Embracement in leprosy", "Clinical practice" and "Education in Health", with limitations in meeting the particularities of the studied population. Conclusions: Limiting aspects in health care practice contribute to the difficulties in controlling the disease, requiring the development of best practice recommendations that address the needs of children and adolescents.
BIOELECTRICAL VECTOR ANALYSIS IN OBESE ADOLESCENTS
Authors: Oliveira Filho João Martins de , Bernardes Péricles Soares , Serpa Guilherme Henrique Costa , Siqueira Gabriel Dutra de Jesus , Noll Matias , Venâncio Patrícia Espíndola Mota , Soares Viviane
Published: July 2020

ABSTRACT Objective: To evaluate the hydration of obese and non-obese adolescents by vectorial bioimpedance analysis, in addition to verifying the associations between obesity and bioelectrical impedance vectorial analysis (BIVA) parameters. Methods: A cross-sectional study with adolescents between 14 and 18 years old (n=489, 300 boys and 189 girls). Electric bioimpedance (BIA; Quantum_II, RJL system, Rome, Italy) provided resistance and reactance parameters to calculate phase angle (PA), fat-free mass (FFM) and body fat (%BF). The confidence ellipses were compared, and the construction of the tolerance ellipses allowed individual and qualitative evaluation of the vectors and classification in dehydrated, normohydrated and hyperhydrated. Results: 78 obese and 411 eutrophic adolescents participated. Resistance (p<0.001) and reactance (p<0.001) and their normalization by stature (p<0.001) were reduced in the obese, whereas the PA was higher (p=0.003). %BF was 11.3% higher in obese adolescents. The main vector of the obese, both male (D=1.38; p<0.001) and female (D=1.49; p<0.001), indicated greater hydration. The ellipse of tolerance of the total sample showed that 25 (32.1%) were hyperhydrated and 02 (2.6%) vectors positioned in the sense of dehydration. A total of 17 (53.2%) girls and 16 (34.8%) boys were hyperhydrated. Logistic regression showed an inverse relation of BMI with resistance (p<0.001), reactance (p<0.001) and both normalized by stature. Adolescents with increased PA (p<0.001) were twice as likely to present obesity. Conclusions: Obese adolescents were hyperhydrated and there was an inverse relationship of BMI with resistance and direct with PA.
Higiene como prática individual e como instrumento de Estado
Authors: Mantovani Rafael , Marques Maria Cristina da Costa
Published: July 2020

Resumo O estudo esboça algumas compreensões sobre a palavra “higiene”. A partir do Renascimento, a ideia advinda da Grécia Antiga voltou a ser trabalhada, primeiramente como método para uma organização dietética e moral da vida que visava ao seu prolongamento. De uma espécie de cuidado de si, transformou-se em conceito de governança, cujo objetivo era o prolongamento da vida dos súditos/cidadãos. O debate teórico sobre o que era higiene pública mostra sua faceta eminentemente política: não apenas era um ramo da economia política, mas também eram analisadas as propostas dos higienistas de acordo com seu maior ou menor impacto na política. A batalha político-científica resultou na vitória de certas compreensões de ação estatal, e no esquecimento e na negligência de outras.
Perspectivas históricas e econômicas sobre a saúde na China no século XXI
Authors: Silva Adriana Ilha da
Published: July 2020

Resumo O artigo analisa as perspectivas históricas das reformas implementadas nos sistemas dos cuidados de saúde na China, desde Deng Xiaoping até Hu Jintao, com base em pesquisa bibliográfica e descritiva. Como resultado das decisões políticas e econômicas, uma série de reformas em saúde foi implementada a partir de 1980, com a introdução do mercado. Como resultado, houve alterações no acesso, na cobertura, na organização e no financiamento da saúde na China. Se nos governos de Deng e Jiang houve a diminuição da cobertura, do acesso e financiamento, Hu Jintao, ao entrar no século XXI, realiza tentativas de expandir a cobertura do seguro saúde visando à universalidade; aumentar o gasto com a saúde pública; reformar o mercado farmacêutico e os hospitais públicos.
Desenvolvimentismo e conservacionismo na Era Vargas, 1930-1945: a atuação científica e política de Paulo Campos Porto
Authors: Casazza Ingrid Fonseca
Published: July 2020

Resumo O artigo analisa a participação do botânico Paulo Campos Porto no aparelho estatal durante a Era Vargas, focando nas diretrizes que imprimiu ao Jardim Botânico do Rio de Janeiro em seu primeiro período na direção e na sua atuação à frente da Secretaria de Agricultura do Estado da Bahia. Pretende-se contribuir para a compreensão de aspectos da atuação de técnicos e cientistas na política varguista. Além disso, ao buscar compreender a aproximação do botânico com o governo varguista e como as instituições que administrou colaboraram com o projeto político desse período, procura-se tornar possível a percepção de algumas nuanças do desenvolvimentismo como, por exemplo, uma aproximação com os preceitos do conservacionismo na ocasião.