bluuebunny/crossref_metadata_2025_split huggingface dataset:
Statistical Analysis of the Influence of Curing Time and Temperature on Compressive Strength of Sandy Soil Stabilized with Sustainable Binder
Authors: Leon Helena Batista , da Silva Carretta Mariana , Azevedo Maurício Birkan , Conti Matteo , Consoli Nilo Cesar 
Published: December 2019

Abstract
Rice husk ash (RHA) is a by-product of the incineration of rice husk, a process whose objective is the generation of thermal and electrical energy. Carbide lime (CL) is a residue of acetylene gas production. Agricultural-industrial wastes, like RHA and CL, have great potential applications in earthworks, mainly in the regions where these residues are produced. This research evaluates the potential use of RHA mixed with CL as a binder used to improve strength properties of sandy soils, substituting portland cement. Different curing temperatures (23°C and 40°C) and curing periods (7 and 28 days) of the compacted sandy soil-RHA-CL blends were evaluated to determine the importance of such changes on the strength of the blends. Studies have been carried out to quantify the unconfined compressive strength (qu) as a function of a novel index called porosity/binder. The aim of this index is to measure the influence of porosity and binder content on blends’ properties, considering the combination of the amounts of RHA and CL as the binder. The results show that higher values of qu are obtained with the reduction of porosity and with the increase of binder content. Curing temperature acts as a catalyzer and accelerates pozzolanic reactions between RHA and CL. For the purpose of verifying the effect of the investigated controllable factors—γd, RHA, CL, and curing type—in the response variable qu, an analysis of variance was performed. Based on that, it was possible to verify that the types of curing during 28 days at 23°C and for 7 days at 40°C are statistically equivalent. It increases the possibility of choice for engineering design because these results mean that the engineer may choose an appropriate curing period and temperature in accordance with project requirements and average temperatures in the site construction.
Microstructure and Properties of the Nitrided Layer of Nodular Cast Iron
Authors: Liu Qingsong , Zhuang Lei , Liu Xu 
Published: December 2019

Abstract
The plunger pair is an important part of the plunger pump. It is required to have high wear resistance, self-lubrication, deformation resistance, and sufficient strength and rigidity because of the harsh application environment, thus ductile iron is a common material for large piston pumps because of its excellent overall performance. In order to improve the friction and wear performance of spheroidal graphite cast iron plungers, a nitride layer was prepared on the ductile iron QT600-3 by the ion nitriding technique. The morphology of the permeable layer was observed with a metallographic microscope, and its hardness, friction, and wear properties were analyzed using a Vickers hardness tester and a multifunctional material tester. The results of the article show that the hardness of the nitrided specimens is greatly improved, which is about twice the hardness of the matrix. The friction coefficient is found to be much lower than the friction coefficient of the matrix; the diameter of the wear scar is small, showing a moderate change compared with the matrix; and the performance is about four times. Therefore, the ion nitriding technique can significantly improve the friction and wear resistance of the pump plunger pair.
Avaliación do impacto do Programa Fondo Tecnolóxico 2007-2013 en Galicia: resultados, concentración das axudas e fugas de recursos
Authors: Sande Veiga Diego , Vence Deza Xavier 
Published: December 2019

Avalíase o impacto en Galicia da implementación do Programa Operativo para e polo beneficio da I+D+i empresarial-Fondo Tecnolóxico 2007-2013, que constituíu un instrumento singular das políticas de innovación financiado polos Fondos Estruturais da Unión Europea e dirixido ás comunidades autónomas españolas do Obxectivo Converxencia da Unión Europea. A través da análise proposta trátase de identificar o impacto deste Programa plurianual –que mobilizou un importante volume de recursos e cuxa execución se estende ata 2015– na evolución do Sistema Galego de Innovación. Con ese fin analízanse os diferentes tipos de medidas e actuacións financiadas e o seu impacto nos principais indicadores de innovación (creación de capacidades, gasto en investigación e desenvolvemento, solicitude de patentes, persoal en investigación e desenvolvemento, infraestruturas, redes de colaboración, etc.), contrastando os obxectivos perseguidos e os resultados observados. Tamén se analizan aspectos institucionais e organizacionais que inciden no deseño, implementación e xestión das medidas e a súa posible incidencia nos seus efectos (fugas de recursos, dificultades de vertebración, concentración das actividades innovadoras nun número limitado de axentes, etc.). As conclusións extraídas permiten formular recomendacións para o deseño e implementación no territorio doutras políticas de investigación, desenvolvemento e innovación. Palabras
Microbiology of urine samples obtained through suprapubic bladder aspiration: A 10-year epidemiological snapshot
Authors: Gajdács M , Ábrók M , Lázár A , Burián K 
Published: December 2019

Purpose
Suprapubic bladder aspiration is an invasive procedure in which a needle is used to obtain a urine sample directly from the bladder. Its advantages are sensitivity (detection of significant bacteriuria is close to 100%), suitability for cultivation of anaerobic bacteria, and low risk of contamination. Our purpose was to characterize the microbiology and epidemiology of urine samples obtained through this procedure in the Clinical Center of the University of Szeged’s Institute of Clinical Microbiology between 2008 and 2017.

Materials and methods
Over the 10-year period, patient data were collected and suprapubic bladder aspirations were performed, and the samples are processed in accordance with routine laboratory procedures in clinical bacteriology.

Results
Of 187 urine samples obtained from 148 patients, 32.6% (n = 61) were culture-positive (defined as 102 colony forming units/ml or more).

Conclusions
This method should be considered an important sampling procedure in the differential diagnostics of upper urinary tract infections, particularly in children <2 years of age, and in older people, hospitalized patients.
ANALISIS RESIKO PRODUKSI DAN PENDAPATAN PADA USAHA BUDI DAYA TAMBAK UDANG WINDU DI KABUPATEN KOTABARU, PROVINSI KALIMANTAN SELATAN
Authors: Asaad Andi Indra Jaya , Asaf Ruzkiah , Athirah Admi , Ratnawati Erna 
Published: December 2019

Komoditas udang Windu di Kabupaten Kotabaru hanya sebagai komoditas primer sehingga nilai tambah yang dimiliki belum dapat dimanfaatkan untuk kesejahteraan masyarakat. Tujuan dari penelitian ini adalah: (1) untuk mengetahui resiko produksi; (2) untuk mengetahui analisis pendapatan usaha petambak budi daya udang windu, dan; (3) untuk mengetahui resiko pendapatan. Penelitian ini dilaksanakan di Kabupaten Kotabaru, Provinsi Kalimantan selatan. Jumlah responden sebanyak 32 orang secara acak. Analisis Data yang digunakan dalam penelitian ini dengan menggunakan analisis kualitatif dan analisis kuantitatif. Hasil penelitian menunjukkan bahwa keuntungan budi daya udang yang diperoleh setiap musim tanam sebesar Rp.11.031.970/Ha/musim tanam, dengan pay back periode sebesar 7,24. Analisis resiko produksi menunjukkan bahwa koefisien variansi produksi sebesar 0,444 dengan batas bawah sebesar 32.225 Kg. Sedangkan analisis resiko pendapatan menunjukkan koefisien variansi sebesar 0,427 dengan batas bawah sebesar 2.868.491/Ha/musim tanam. Dari hasil tersebut menjelaskan bahwa petambak udang tidak mengalami resiko terhadap produksi dikarenakan kecilnya resiko produksi dan tingginya harga udang windu.Title: Risk Analysis of Production and Revenue on Black Tiger Shrimp Farming in Kotabaru District, South Kalimantan ProvinceBlack tiger shrimp commodity in Kotabaru District is a primary commodity which added value has not been optimized for community welfare. The research aims to (1) identify the risks of the production, (2) analyze the revenue of tiger shrimp farmers and (3) identify the income risk. This research was conducted in Kotabaru District with 32 respondents at random. The data were analyzed with qualitative and quantitative method. Results showed that the profit of the shrimp farming on each planting season was IDR11.031.970 million / ha / season, with a payback period of 7.24. Production risk analysis showed that the coefficient of variance in production was 0.444 with a lower limit of 32,225 kg. The revenue risk analysis showed coefficient of variance of 0.427 with a lower limit of 2,868.491 / ha / season. These results suggest that shrimp farmers do not suffer from production risk due to small production risks and high prices of black tiger shrimps.
O uso de competições na Educação Profissional: um estudo de caso no SENAI-SP
Authors: Azevedo Marilia Macorin de , Langhi Celi , Braga Anderson Barcelos Rocha 
Published: December 2019

As competições de educação profissional são torneios realizados por Instituições de Educação Profissional, tenham elas estado envolvidas ou não com a organização do evento. Os objetivos são avaliar os conhecimentos, habilidades e atitudes de participantes face a situações problemas dos projetos-teste a fim de atingir os resultados esperados dentro de padrões de qualidade estabelecidos pela Instituição organizadora. Podem ser instrumentos utilizados para avaliar o nível de excelência de sua formação profissional. É neste contexto que o SENAI realiza periodicamente a Olimpíada do Conhecimento. Este artigo tem por objetivo apresentar as experiências relatadas pelos professores treinadores do SENAI São Paulo com relação às suas participações nas competições de Educação Profissional. A pesquisa tem enfoque qualitativo, por meio de pesquisa bibliográfica, documental e pesquisa de campo com professores treinadores. Os resultados sugerem que para o professor treinador a competição propicia atualização profissional, aperfeiçoamento de conhecimentos técnicos, desenvolvimento de capacidades de trabalho em equipe e construção de uma rede de relacionamento. Também propicia experiência única na vida de cada participante.
Dynamics of traumatism in adult population of the Russian Federation
Authors: Mironov S. P. , Es’kin N. A. , Andreeva T. M. , Ogryzko E. V. , Shelepova E. A. 
Published: December 2019

Purpose: to study the dynamics of traumatism, to analyze the injury structure as well as the structure of mortality from external causes in adult population of the Russian Federation.
Material and methods. Injury mortality and injury morbidity in adults were analyzed on the basis of official statistical data for the period 20132017.
Results. The decline of indices with preservation of gender differences as well as the differences in both the age groups and between the urban and rural population was noticed.
Conclusion. Development of complex preventive regional program is necessary to the decrease of traumatism and its negative sequels.
Потенциометрическая мультисенсорная система на основе перфторированных мембран и допантов с протоноакцепторными свойствами для определения прокаина и лидокаина в комбинированном препарате
Authors: Parshina Anna V. , Kolganova Tatyana S. , Bobreshova Olga V. 
Published: December 2019

Разработана потенциометрическая мультисенсорная система с перекрестно чувствительными ПД-сенсорами (аналитический сигнал – потенциал Доннана) на основе перфторированных сульфокатионообменных мембран МФ-4СК и Nafion, содержащих 3 мас.% SiO2, поверхностно модифицированного 10 мол.% 3-аминопропила, и 2.4 мас.% ZrO2 для совместного определения катионов прокаина и лидокаина в диапазоне концентраций от 1.0·10-4 до 1.0·10-2 М. Пределы обнаружения ионов прокаина и лидокаина с помощью предложенной мультисенсорной системы составили1.0·10-6 и 4.5·10-5 М, соответственно. Относительная погрешность и относительное стандартное отклонение определения катионов прокаина в комбинированном фармацевтическом препарате составили 0.5-11 и 4-11 %, катионов лидокаина – 5-6 и 10-12%, соответственно.
The future of European communication and transportation research: a research agenda
Authors: Geurs Karst , Macharis Cathy 
Published: December 2019

Our mobility system is changing rapidly. We are at the crossroad of major changes in the way we travel and deliver goods. Research agendas are adapting to this changed environment with new challenges and opportunities. This paper presents a research agenda for the future of transportation research structured along eight cluster topics of the Network on European Communication and Transport Activities Research (NECTAR). The research agenda firstly highlights the growing complexity and need for multi- and interdisciplinary transportation research. Secondly, sustainability needs to be addressed in transportation research in its full meaning, including relationships between policy-making investigations and environmental and equity effects. Thirdly, ICTs and digitalisation, the development of (shared) autonomous vehicles and shared mobility will have profound impacts on economies and spatial interactions all-around the world, and availability of high resolution spatial and transportation data. Digitalisation generates many new research opportunities but also give rise to new concerns about privacy, safety, equity and public health.
SÍNDROME DE BURNOUT E FATORES ASSOCIADOS EM ENFERMEIROS INTENSIVISTAS: UMA REVISÃO SISTEMÁTICA
Authors: Caribé de Aragão Núbia Samara , Bené Barbosa Gabriella , Lopes Nascimento Sobrinho Carlito 
Published: December 2019

<p align="center"><strong>Objetivo:</strong> analisar a produção científica no Brasil e exterior sobre a prevalência e fatores associados à síndrome de <em>burnout</em> em enfermeiros intensivistas. <strong>Material e Métodos:</strong> revisão sistemática direcionada pelos descritores “enfermeira”, “<em>burnout</em> profissional”, “unidade de terapia intensiva”, “prevalência” e sinônimos. Busca dos artigos nas bases de dados eletrônicas, (<em>Medline/Pubmed</em><em>; </em><em>Scielo; Lilacs; </em><em>Bdenf; Scopus; Web of Science; Embase</em>), sem restrição de data. <strong>Resultados: </strong>foram<strong> </strong>selecionados 13 artigos<strong> </strong>publicados entre os anos de 2007 a 2018. A elevada prevalência da síndrome <em>burnout </em>foi o resultado mais observado<em> </em>e as variáveis mais associadas à síndrome foram; idade, sexo, estado civil, tempo e turno de trabalho. <strong>Conclusão:</strong> as prevalências encontradas foram semelhantes, pois, a maioria dos autores definiram <em>burnout</em> pela presença do nível alto, em pelo menos uma das três dimensões, porém, foram observadas diferenças no valor utilizado como ponto de corte para a caracterização da síndrome e entre as variáveis associadas estudadas.</p><p><strong>Descritores: </strong>Esgotamento profissional; Enfermeiros; Unidade de Terapia Intensiva.</p><p align="center"> </p>
THE EFFECT OF PAIR AND GROUP WORK IN COLLABORATIVE PRE-WRITING DISCUSSION ON STUDENTS’ WRITING QUALITY
Authors: Winarti Winarti 
Published: December 2019

In foreign language writing classroom, collaborative pre-writing activity is one of common activities used by students to help them generate and evaluate their ideas before they write a text. A teacher usually assigns students to work in pairs or groups to accomplish the activity. However, whether the number of participants in collaborative pre-writing activity influenced the quality of students’ writing or not is still mysterious that need to be investigated further. This study tried to investigate the effect of the number of participants in collaborative pre-writing discussion on students’ writing quality. 30 participants from non-English department who were studying English as English Specific Purposes were involved in this study. They were required to write an explanation paragraph after being given a certain treatment. The result of the study revealed that the quality of students’ writing was not affected by the number of participants in collaborative pre-writing discussion. Therefore, the implication of the study is teacher can assign students to work collaboratively in pre-writing activity with two or more students. However, some factors need to be considered by teacher such as students learning style, the nature of task, etc.
Geologic Investigations for Compliance with the CARB Asbestos ATCM
Authors: Erskine Bradley G. 
Published: December 2019

ABSTRACT
The California Air Resources Board Airborne Toxic Control Measure for Construction, Grading, Quarrying, and Surface Mining Operations (ATCM) provides requirements for the evaluation for naturally occurring asbestos (NOA) on a construction site. There are two compliance triggers: (1) a determination that the site is located within a geographic ultramafic rock unit, defined as a geographic area designated as an ultramafic rock on referenced maps, and (2) the presence of NOA, serpentinite, or ultramafic rock. The California Geological Survey requires that NOA evaluations be conducted by a licensed professional geologist. However, under the ATCM, a professional geologist is required only when a property owner wishes to demonstrate that a geographic ultramafic rock unit is not actually represented by ultramafic rocks. The professional geologist who must advise whether the ATCM applies at a construction site is therefore placed in a precarious position. Does a limited desktop review of geologic maps meet any standard of practice? If the ATCM is triggered by the presence of asbestos, is the geologist negligent if no evaluation is recommended or conducted? Could geologic units be pre-screened for asbestos potential? Using case studies and geologic data in the city of San Francisco and East Bay, this presentation reviews these issues and provides a context for the geologist to conduct the appropriate level of investigation for compliance with the ATCM.
Genetic diversity and population structure of black cottonwood (Populus deltoides) revealed using simple sequence repeat markers
Authors: Chen Cun , Chu Yanguang , Ding Changjun , Su Xiaohua , Huang Qinjun 
Published: December 2019

Abstract
Background: Black cottonwood (Populus deltoides) is one of the keystone forest tree species, and has become the main breeding parents in poplar hybrid breeding. However, the genetic diversity and population structure of the introduced resources are not fully understood. Results: In the present study, five loci containing null alleles were excluded and 15 pairs of SSR (simple sequence repeat) primers were used to analyze the genetic diversity and population structure of 384 individuals from six provenances (Missouri, Iowa, Washington, Louisiana, and Tennessee (USA), and Quebec in Canada) of P. deltoides. Ultimately, 108 alleles (Na) were detected; the expected heterozygosity (He) per locus ranged from 0.070 to 0.905, and the average polymorphic information content (PIC) was 0.535. The provenance ‘Was’ had a relatively low genetic diversity, while ‘Que’, ‘Lou’, and ‘Ten’ provenances had high genetic diversity, with Shannon's information index (I) above 1.0. The mean coefficient of genetic differentiation (Fst) and gene flow (Nm) were 0.129 and 1.931, respectively. Analysis of molecular variance (AMOVA) showed that 84.88% of the genetic variation originated from individuals. Based on principal coordinate analysis (PCoA) and STRUCTURE cluster analysis, individuals distributed in the Mississippi River Basin were roughly classified as one group, while those distributed in the St. Lawrence River Basin and Columbia River Basin were classified as another group. The cluster analysis based on the population level showed that provenance ‘Iow’ had a small gene flow and high degree of genetic differentiation compared with the other provenances, and was classified into one group. There was a significant relationship between genetic distance and geographical distance. Conclusions: P. deltoides resources have high genetic diversity and there is a moderate level of genetic differentiation among provenances. Geographical isolation and natural conditions may be the main factors causing genetic differences among individuals. Individuals reflecting population genetic information can be selected to build a core germplasm bank. Meanwhile, the results could provide theoretical support for the scientific management and efficient utilization of P. deltoides genetic resources, and promote the development of molecular marker-assisted breeding of poplar.
Characterizing the ribosomal tandem repeat and its utility as a DNA barcode in lichen-forming fungi
Authors: Bradshaw Michael , Grewe Felix , Thomas Anne , Harrison Cody H. , Lindgren Hanna , Muggia Lucia , Clair Larry L. St. , Lumbsch H. Thorsten , Leavitt Steve 
Published: December 2019

Abstract
Background: Regions within the nuclear ribosomal operon are a major tool for inferring evolutionary relationships and investigating diversity in fungi. In spite of the prevalent use of ribosomal markers in fungal research, central features of nuclear ribosomal DNA (nrDNA) evolution are poorly characterized for fungi in general, including lichenized fungi. The internal transcribed spacer (ITS) region of the nrDNA has been adopted as the primary DNA barcode identification marker for fungi. However, little is known about intragenomic variation in the nrDNA in symbiotic fungi. In order to better understand evolution of nrDNA and the utility of the ITS region for barcode identification of lichen-forming fungal species, we generated nearly complete nuclear ribosomal operon sequences from nine species in the Rhizoplaca melanophthalma species complex using short reads from high-throughput sequencing. Results: We estimated copy numbers for the nrDNA operon, ranging from nine to 48 copies for members of thiscomplex, and found low levels of intragenomic variation in the standard barcode region (ITS). Monophyly of currently described species in this complex was supported in phylogenetic inferences based on the ITS, 28S, intergenic spacer region, and some intronic regions, independently; however, a phylogenetic inference based on the 18S provided much lower resolution. Phylogenetic analysis of concatenated ITS and intergenic spacer sequence data generated from 496 specimens collected worldwide revealed previously unrecognized lineages in the nrDNA phylogeny. Conclusions: The results from our study support the general assumption that the ITS region of the nrDNA is an effective barcoding marker for fungi. For the R. melanophthalma group, the limited amount of potential intragenomic variability in the ITS region did not correspond to fixed diagnostic nucleotide position characters separating taxa within this species complex. Previously unrecognized lineages inferred from ITS sequence data may represent undescribed species-level lineages or reflect uncharacterized aspects of nrDNA evolution in the R. melanophthalma species complex.