bluuebunny/crossref_metadata_2025 huggingface dataset:
A CASE OF BOTULISM
Authors: Bondarenko A. , Katsapov D. , Nartov P. , Gordienko A.
Published: June 2019

Bondarenko A.,Katsapov D., Nartov P., Gordienko A. Data on rising number of cases of food botulism in Ukraine is discussed in the article. As a clinical example, unusual case of food-borne botulism of a patient in Kharkiv is described. Peculiarity of the case is a development of symptoms of the disease in patients with compromised psychoneurological background and exacerbation of chronic pancreatitis so the clinical presentation mimicked other acute progressive neurological disorders. Differential diagnostics is presented. Experience and effectiveness of Heptavalent Botulism Antitoxin (HBAT), which was used for the first time in our hospital for treatment of botulism is discussed.Key words:symptoms, treatment, heptavalent, botulism, antitoxin РезюмеВИПАДОК БОТУЛІЗМУ Бондаренко А., Кацапов Д., Нартов П., Гордієнко А.Дані щодо зростання випадків харчового ботулізму в Україні надані у статті. Як клінічний приклад, описано незвичайний випадок харчового ботулізму у пацієнтки в Харкові. Особливість випадку у розвитку симптомів захворювання на тлі скомпрометованого психоневрологічного анамнезу та загострення хронічного панкреатиту, отже клінічні прояви були замасковані іншим неврологічним розладом, який прогресував. Представлено також диференційний діагноз. Описано досвід та ефективність застосування Гептавалентного Ботулінічного Анатоксину (ГБАТ), котрий був застосований вперше в нашій лікарні.Ключові слова: симптоми,лікування, гептавалентний, ботулізм, анатоксин РезюмеСЛУЧАЙ БОТУЛИЗМА Бондаренко А., Кацапов Д., Нартов П., Гордиенко А.В статье представлены данные о росте случаев пищевого ботулизма в Украине. В качестве клинического примера описывается необычный случай пищевого ботулизма у пациента в Харькове. Особенность случая в развитии симптомов заболевания на фоне скомпрометированного психоневрологического анамнеза и обострения хронического панкреатита, поэтому клинические проявления были замаскированы другим неврологическим расстройством, которое прогрессировало. Представлен также дифференциальный диагноз. Описан опыт применения и эффективность Гептвалентного Ботулинического Анатоксина (ГБАТ), который был применен впервые в нашей больнице.Ключевые слова:симптомы, лечение, гептвалентный, ботулизм, анатоксин
INTERLEUKIN LEVELS IN PATIENTS WITH ESSENTIAL HYPERTENSION COMBINED WITH TYPE 2 DIABETES MELLITUS
Authors: Shelest B.O.
Published: June 2019

INTERLEUKIN LEVELS IN PATIENTS WITH ESSENTIAL HYPERTENSION COMBINED WITH TYPE 2 DIABETES MELLITUSShelest B.O.The problem of combined course of hypertension of diabetes mellitus type 2 and obesity is becoming more common. This variant of comorbidity crucially increases the risk of cardiovascular complications. Inflammation is considered as an important link between the progression of hypertension and the development of adverse events. This study is devoted to the question of the relationship between the pro-inflammatory marker interleukin-6 and the increased blood pressure in patients with concomitant diabetes and obesity. The treatment of such patients with combined pathology remains the actual and difficult issue of medical practice. The article analyses the dynamics of interleukin-6 in the process of treatment with a fixed triple antihypertensive combination. Key words: hypertension, interleukin-6, type 2 diabetes mellitus, obesity. РІВНІ ІНТЕРЛЕЙКІНІВ У ХВОРИХ НА ГІПЕРТОНІЧНУ ХВОРОБУ У ПОЄДНАННІ З ЦУКРОВИМ ДІАБЕТОМ 2 ТИПУ Шелест Б.О.Все більшого поширення набуває проблема поєднаного перебігу гіпертензії цукрового діабету 2 типу та ожиріння. Такий варіант коморбидности різко підвищує ризик кардіоваскулярних ускладнень. Важливою ланкою в прогресуванні гіпертензії і розвитку несприятливих подій відводиться запаленню. Дана робота присвячена питанню залежності прозапального маркера інтерлейкіну-6 і підвищених цифр артеріального тиску у хворих з супутнім цукровим діабетом 2 типу і ожирінням. Актуальним і складним питанням медичної практики залишається лікування таких пацієнтів з поєднаною патологією. У статті аналізується динаміка інтерлейкіну-6 в процесі лікування потрійною фіксованою антигіпертензивною комбінацією.Ключові слова: гіпертонічна хвороба, інтерлейкін-6, цукровий діабет 2 типу, ожиріння. УРОВЕНЬ ИНТЕРЛЕЙКИНОВ У ПАЦИЕНТОВ С ГИПЕРТОНИЧЕСКОЙ БОЛЕЗНЬЮ В СОЧЕТАНИИ С САХАРНЫМ ДИАБЕТОМ 2 ТИПА. Шелест Б.А.Все большее распространение приобретает проблема сочетанного течения гипертензии сахарного диабета 2 типа и ожирения. Такой вариант коморбидности резко повышает риск кардиоваскулярных осложнений. Важным звеном в прогрессировании гипертензии и развитии неблагоприятных событий отводится воспалению. Даннаяработапосвящена вопросу зависимости провоспалительного маркера интерлейкина-6 и наличием повышенных цифр артериального давления у больных с сопутствующим сахарным диабетом и ожирением. Актуальным и сложным вопросом медицинской практики остается лечение таких пациентов с сочетанной патологией. В статье анализируется динамика интерлейкина-6 в процессе лечения фиксированной тройной антигипертензивной комбинацией. Ключевые слова: гипертоническая болезнь, интерлейкин-6, сахарный диабет 2 типа, ожирение.
Synthesis of 1-azaspiro[4.4]nonan-1-oxyls via Intramolecular 1,3-Dipolar Cycloaddition
Authors: Khoroshunova Yulia V , Morozov Denis A , Taratayko Andrey I , Gladkikh Polina D , Glazachev Yuri I , Kirilyuk Igor A
Published: June 2019

Sterically shielded nitroxides of pyrrolidine series are known to demonstrate the highest stability to reduction. Here we report on the synthesis of new pyrrolidine nitroxides from 5,5-dialkyl-1-pyrroline N-oxides via the introduction of pent-4-enyl group to nitrone atom followed by intramolecular 1,3-dipolar cycloaddition reaction and isoxazolidine ring opening. Kinetics of reduction of the new nitroxides with ascorbate was studied and compared to that of previously published 1S,2R,3′S,4′S,5′S,2″R-dispiro[(2-hydroxymethyl)-cyclopentan-1,2′-(3′,4′-di-tert-butoxy)pyrrolidine-5′,1″-(2″-hydroxymethyl)cyclopentane]-1′-oxyl (1).
Fluid Dynamic Aspects of Protostellar Disks Formation
Authors: Capitaine Gérard
Published: June 2019

An analysis is presented of fluid dynamic aspects of the interaction between a disk and the infall of material from a surrounding non-magnetized rotating molecular cloud. The study put emphasis on the accretion shock formed in the vicinity of the disk and the post-shock flow field. This post-shock flow is considered parallel to the disk symmetry plane involving a super-Keplerian azimuthal velocity field v ∼ 1/r (potential vortex). The relative rotation between fluid and the nearly Keplerian rotating thin disk induces along its symmetry plane a boundary layer capable of transporting large quantities of fluid inward. This radial flow results in an axial flow i.e., a mass ejection from the boundary layer with axial jet flow velocities of up to about 300 km s−1.
Millisecond Pulsars and Black Holes in Globular Clusters
Authors: Ye Claire S. , Kremer Kyle , Chatterjee Sourav , Rodriguez Carl L. , Rasio Frederic A.
Published: June 2019

Over 100 millisecond radio pulsars (MSPs) have been observed in globular clusters (GCs), motivating theoretical studies of the formation and evolution of these sources through stellar evolution coupled to stellar dynamics. Here we study MSPs in GCs using realistic N-body simulations with our Cluster Monte Carlo code. We show that neutron stars (NSs) formed in electron-capture supernovae (including both accretion-induced and merger-induced collapse of white dwarfs) can be spun up through mass transfer to form MSPs. Both NS formation and spin-up through accretion are greatly enhanced through dynamical interaction processes. We find that our models for average GCs at the present day with masses ≈2 × 105
M
⊙ can produce up to 10–20 MSPs, while a very massive GC model with mass ≈106
M
⊙ can produce close to 100. We show that the number of MSPs is anti-correlated with the total number of stellar-mass black holes (BHs) retained in the host cluster. The radial distributions are also affected: MSPs are more concentrated toward the center in a host cluster with a smaller number of retained BHs. As a result, the number of MSPs in a GC could be used to place constraints on its BH population. Some intrinsic properties of MSP systems in our models (such as the magnetic fields and spin periods) are in good overall agreement with observations, while others (such as the distribution of binary companion types) are less so, and we discuss the possible reasons for such discrepancies. Interestingly, our models also demonstrate the possibility of dynamically forming NS–NS and NS–BH binaries in GCs, although the predicted numbers are very small.
The critical role of abiotic factors and human activities in the supply of ecosystem services in the ES matrix
Authors: Maebe Laura , Claessens Hugues , Dufrêne Marc
Published: June 2019

In Western Europe, ecosystems have been shaped to maximise the supply of one specific biomass provisioning ecosystem service (ES), such as food or timber, with detrimental impacts on other ES. The ES approach has therefore been established to better understand the multiple interactions between human society and ecosystems. A variety of methods have been developed to assess ES and their relationships, for instance the ES matrix model based on land cover classes. This popular, flexible and simple method allows combining different data sources and easily comparing ES. However, in general, this method poorly takes into account landscape heterogeneity while abiotic factors and human activities seem to play an important role in ES supply. The objective of this paper is twofold: (1) to extent the methodology based on the ES matrix model by including abiotic factors and human activities and (2) to test the impacts of these two types of factors on ES supply and their relationships.

The assessment focused on the capacity of the forest to supply six ES depending on six types of soil ranging from productive soils to more constraining or less productive soils (i.e. abiotic factors) and two contrasting forest management strategies (i.e. human activities). This amended ES matrix was applied on one hand, to map the supply of ES and their relationships in four municipalities in the Ardenne ecoregion (Southern Belgium) and on the other hand, to investigate the impacts of three scenarios (i.e. three different management strategies) on ES supply and their relationships.

The amended ES matrix shows large differences in ES supply between the two forest management strategies on the more constraining and less productive soils, creating differences in the spatial pattern of ES. The changes in ES supply amongst the three scenarios and the current supply were quantified to identify the best management options.

In conclusion, one particular forest is not like another in terms of ES supply and their relationships. To capture this heterogeneity, we propose an amended ES matrix including abiotic factors and human activities. The maps, based on this matrix, allow identifying the hotspots (i.e. high capacity to supply different ES) and coldspots (i.e. low capacity to supply different ES or strong trade-offs between provisioning ES and regulating/cultural ES). Forest management should be adapted to the abiotic conditions, in particular in the coldspots, to ensure a more balanced supply of ES.
Two new species of Acanthobothrium Blanchard, 1848 (Onchobothriidae) in Narcine entemedor Jordan & Starks, 1895 (Narcinidae) from Acapulco, Guerrero, Mexico
Authors: Zaragoza-Tapia Francisco , Pulido-Flores Griselda , Violante-González Juan , Monks Scott
Published: June 2019

Two species ofAcanthobothrium(Onchoproteocephalidea: Onchobothriidae) are described from the spiral intestine ofNarcineentemedorJordan & Starks, 1895, in Bahía de Acapulco, Acapulco, Guerrero, Mexico. Based on the four criteria used for the identification of species ofAcanthobothrium,A.soniaesp. nov.is a Category 2 species (less than 15 mm in total length with less than 50 proglottids, less than 80 testes, and with the ovary asymmetrical in shape).Acanthobothriumvidalisp. nov.is a Category 6 species (more than 15 mm in total length with more than 50 proglottids, fewer than 80 testes, and the ovary is asymmetrical). The new species differ from similar species from the Pacific Ocean by total length, the number of proglottids, diameter of the accessory sucker, the length of the cirrus sac, the number of testes per proglottid and the measurements of hooks. With the recognition ofA.soniaesp. nov.andA.vidalisp. nov., 42 species ofAcanthobothriumhave been reported from the Pacific coast of the Americas. This is the first report of species ofAcanthobothriumfrom a member ofNarcinefrom Mexico and it brings the number of species reported from elasmobranchs from the Pacific Coast of Mexico to 13.
Effects of Lactobacillus reuteri-containing lozenges on healing after surgical removal of mandibular third molars: a randomised controlled trial
Authors: Wälivaara D.-Å. , Sjögren I. , Gerasimcik N. , Yucel-Lindberg T. , Twetman S. , Abrahamsson P.
Published: June 2019

We investigated the effect of probiotic supplements on oral wound healing, swelling, pain and discomfort after surgical removal of mandibular third molars. A second aim was to evaluate if the intervention could influence the concentrations of oxytocin in saliva. Sixty-four consecutive volunteers (18-34 years) were enrolled to a double-blind randomised placebo-controlled trial with two parallel arms. Following surgery, the patients were asked to take three lozenges per day containing two strains of Lactobacillus reuteri (DSM 17938 and ATCC PTA 5289) or placebo for two weeks. The clinical healing and extra-oral swelling were scored two weeks post-operatively. Samples of wound exudate were cultivated for the presence of Staphylococcus aureus and β-haemolytic streptococci. Salivary oxytocin concentrations were analysed from pre- and post-surgery samples using ELISA technique. Compliance and the subjective perception of swelling, pain and discomfort were reported daily through visual analogue scales in a logbook. All patients except three completed the protocol and the postoperative course was uneventful in most cases. Minor extra-oral swellings were noted in five patients, but none required antibiotic treatment. At the 2-week follow-up, there were no significant differences in clinical wound healing index, extra-oral swelling, bacterial growth or salivary oxytocin levels between the groups. The self-reported data unveiled, however, a significantly reduced sense of swelling, in particular during the second week after surgery in the probiotic test group (P<0.05). Likewise, significantly fewer nights with disturbed sleep and fewer days with sick-leave from work were reported among the participants in the test group (P<0.05). No differences were found in the post-operative use of analgesics. In conclusion, we found no significant influence of probiotic supplements on objective wound healing after surgical extraction of impacted mandibular third molars. However, since the patients’ perceived significant post-operative ameliorations, further studies are needed to explore the patient’s value of the intervention.
Conceptual Frameworks in Undergraduate Nursing Curricula: Report of a National Survey
Authors: McEwen Melanie , Brown Sandra C
Published: June 2019

ABSTRACT

A national survey was conducted to analyze the components of conceptual frameworks to assess how they are being used to organize the curricula of nursing programs and to determine whether there was a difference among types of programs (i.e., baccalaureate degree, associate degree, diploma). A stratified, random sample of 300 National League for Nursing Accrediting Committeeaccredited schools of nursing was selected based on percentages of each type of program. Questionnaires were returned from 160 programs.

The survey found that the conceptual frameworks of most nursing programs were eclectic and that the nursing process was the most commonly cited component for all types of programs. Significant differences were identified among the three types of programs in their use of simpleto-complex organization, the medical model, and the nursing process. Significant differences also were identified among the three types of programs in incorporation of the metaparadigm concepts of nursing, person, health, and environment, and the emphasis placed on critical thinking, problem solving, and therapeutic nursing interventions.
Cultura negra e empreendedorismo: Sensibilidades políticas a reivindicações econômicas e o engajamento através do mercado
Authors: Silva Gleicy Mailly da
Published: June 2019

O presente artigo busca refletir a respeito das relações entre empreendedorismo e engajamento político, observadas a partir da Feira Preta, um evento organizado anualmente na cidade de São Paulo e que tem como objetivo promover atividades de cultura e comércio voltadas à comunidade negra. Constituídas a partir da conjunção de redes de solidariedade entre sujeitos, em sua maioria com ensino superior, engajados em coletivos culturais e/ou identificados como empreendedores, tais interações têm sido estimuladas por um conjunto de transformações político-econômicas dos últimos vinte anos. Atentando para esse cenário etnográfico, chamo atenção, portanto, para o modo como o mesmo tem constituído formas renovadas de reconhecimento e trocas culturais, promovendo a emergência de novos atores econômicos e políticos no contexto nacional. Interessa-me, particularmente, compreender as diferentes lógicas econômicas em ação, que têm articulado reivindicações e novos sujeitos de direitos no Brasil contemporâneo, bem como, identificar os limites desse campo de possibilidades.
Equipamentos de saúde e processos de atenção: Tópicos para pensar ações do Estado voltadas aos povos indígenas
Authors: Silveira Nádia Heusi
Published: June 2019

Este artigo aborda a ação do Estado tendo em vista o processo de discussão de uma política intersetorial direcionada ao problema do uso de álcool e drogas entre os Kaiowa e Guarani. Os agentes envolvidos realizaram uma serie de encontros e debates para consensuar diretrizes de ação, tendo como um dos eixos de debate a instalação ou não de Centro de Atenção Psicossocial Álcool e Drogas (CAPS AD) na Reserva Indígena de Dourados. Considerando convergências e divergências de pontos de vista a partir da unanimidade sobre a necessidade de implementar uma ação articulada entre vários órgãos de governo, o caráter desses encontros é analisado considerando a perpetuação do poder tutelar.
Parentesco por brincadeira no alto rio Iaco
Authors: Matos Marcos de Almeida
Published: June 2019

Partindo de uma descrição do modo como fui recebido na terra indígena por meus anfitriões, busco mostrar como se estrutura o parentesco entre os Manxineru que habitam a Terra Indígena Mamoadate, no alto rio Iaco, afluente do rio Purus. As ideias de “brincadeira” e “respeito” são recrutadas como conceitos-chave para a tematização dessas relações, que são também determinadas como relações de trocas ou de compartilhamento. Antes de ser a composição de grupos sociais e de uma sociologia, esses modos de relação correspondem a algo como uma “teoria da ação”, ou, mais precisamente, uma teoria da brincadeira.
De las familias criollas a las lignées purificadas: Analogías entre vegetales y humanos
Authors: Schiavoni Gabriela
Published: June 2019

El tema de este trabajo son los procesos de familiarización de vegetales y de humanos. A partir de una experiencia de desarrollo encaminada a mejorar las variedades de maíces criollos de pequeños productores del nordeste argentino, nuestro artículo describe las características de los maíces previas al proyecto y el proceso de agrupación resultante de la selección de variedades. Analizamos también cómo se transforma el modo de familiarización de los humanos, observando el surgimiento de un híbrido que combina familia y organización cooperativa. Nuestras conclusiones subrayan la profunda implicación del modelo genealógico en las prácticas institucionales.
Solving Flow Shop Scheduling Problems with Blocking by using Genetic Algorithm
Authors: Kumar Harendra , Kumar Pankaj , Sharma Manisha
Published: June 2019

Flow shop scheduling problems have been analyzed worldwide due to their various applications in industry. In this article, a new genetic algorithm (NGA) is developed to obtain the optimum schedule for the minimization of total completion time of n-jobs in an m-machine flow shop operating without buffers. The working process of the present algorithm is very efficient to implement and effective to find the best results. To implement the proposed algorithm more effectively, similar job order crossover operators and inversion mutation operators have been used. Numerous examples are illustrated to explain proposed approach. Finally, the computational results indicate that present NGA performs much superior to the heuristics for blocking flow shop developed in the literature.
Twitter Based Capital Market Analysis Using Cloud Statistics
Authors: Gupta Sangeeta , Aluvalu Rajanikanth
Published: June 2019

People in the modern world are attracted towards smart working and earning environments rather than having a long-term perception. The goal of this work is to address the challenge of providing better inputs to the customers interested to investing in the share market to earn better returns on investments. The Twitter social networking site is chosen to develop the proposed environment as a majority of the customers tweet about their opinions. A huge set of data across various companies that take inputs from Twitter are processed and stored in the cloud environment for efficient analysis and assessment. A statistical measure is used to signal the worth of investing in a particular stock based on the outcomes obtained. Also, rather than ignoring the missing values and unstructured data, the proposed work analyzes every single entity to enable the customers to take worthy decisions. Tweets in the range of 1 to 100,000 are taken to perform analysis and it is observed from the results that for a maximum of 100,000 tweets, the number of missing is identified as 2,524 and the statistical measure to fill in the missing values is calculated based on the particular missing data record, the count of all data records, and the total number of records. If the outcome of the measure is obtained as a negative, then proceeding with an investment is not recommended. The findings of this work will help the share market investors to earn better profits.
DESENVOLVIMENTO RURAL SUSTENTÁVEL NOS AMBIENTES DE MONTANHA ARGENTINOS: POLÍTICAS INSTITUCIONAIS E AÇÕES PÚBLICAS
Authors: Netto Amazile Lopez , Aquino Adriana Maria de , Assis Renato Linhares de
Published: June 2019

A Argentina encontra-se em segundo lugar entre os países com maior área montanhosa na América Latina; sendo o país reconhecido pelos altos picos encontrados nos Andes, como o Monte Aconcágua. Porém a maioria das montanhas argentinas encontra-se entre altitudes de 501 a 2.000 metros e estão localizadas em diversas ecorregiões, como Yungas, Monte de Sierras y Bolsones, e Puna. Os ambientes de montanha fazem parte da cultura argentina, destacando-se em sua história agroambiental, como em Quebrada de Humauaca. A Argentina ratificou convênios internacionais que podem ser considerados úteis na tutela dos ambientes de montanhas para a regulação de atividades que neles são desenvolvidas, destacando-se: Agenda 21; Convenção sobre a Proteção do Patrimônio Mundial Cultural e Natural; Convenção sobre Diversidade Biológica; e Convenção-quadro das Nações Unidas sobre Mudança do Clima. Realizou-se revisão bibliográfica, análise crítica de dados secundários e entrevista aberta com membro do “Comité para el Desarrollo Sustentable de las Regiones Montañosas de la República Argentina” (CDSM-Argentina), para refletir sobre políticas institucionais e ações públicas que podem afetar o desenvolvimento rural sustentável nos ambientes de montanha argentinos. O CDSM-Argentina é considerado pelas Nações Unidas exemplo a ser observado, com destaque para as ações públicas relacionadas ao turismo rural. Apesar de não existir no país legislação específica que apoie o desenvolvimento rural sustentável em ambientes de montanha, há legislação específica relacionada a conservação ambiental das altas, médias e baixas montanhas. Ações públicas voltadas aos sistemas agroflorestais, pagamento por serviços ambientais e denominações territoriais agroalimentares necessitam de maior atenção do governo argentino.
ESTIMATIVA DA PERDA ANUAL DE SOLOS NA BACIA HIDROGRÁFICA DO CÓRREGO MARINHEIRO, SETE LAGOAS – MG, POR MEIO DA RUSLE
Authors: Salis Hugo Henrique Cardoso de , Costa Adriana Monteiro da , Viana João Herbert Moreira
Published: June 2019

A erosão do solo tem sido reconhecida há muito tempo como um problema ambiental muito sério, especialmente em regiões onde ocorre interferência antrópica e gestão agrícola sem critérios adequados. Neste trabalho utiliza-se o modelo empírico RUSLE para estimar a perda anual de solos da bacia do córrego Marinheiro, Sete Lagoas – MG. Os resultados mostraram que a perda anual de solos na bacia apresentou valor médio estimado em 7,15 ton. ha-1.ano-1. Além disso, foi possível classificar e caracterizar os resultados obtidos para a área de estudo em seis categorias distintas, quais sejam: 0 a 1 (muito baixa); 1 a 3 (baixa); 3 a 5 (moderada); 5 a 10 (severa); 10 a 20 (alta); e acima de 20 ton. ha-1. ano-1(muito alta). Concluiu-se que, espacialmente, a área apresenta predominância das classes baixa e muito baixa de perda anual de solo (61,7% da bacia). No entanto, 21% da área apresentam riscos ambientais, com tendência do tipo severa a muito alta, devido aos processos erosivos mais intensos. Destaca-se que, segundo o modelo, nas áreas onde houve a implantação de atividades antrópicas, as perdas anuais de solos foram mais acentuadas. Os métodos descritos neste estudo permitiram uma compreensão mais clara da relação entre a erosão e seus principais fatores causais, podendo ser úteis para o planejamento e para a implantação de práticas e de manejos que favoreçam a conservação do solo e da água.
Editorial v.37, n.1, jan.-abr., 2019
Authors: Geografia Boletim De
Published: June 2019

Editorial do volume 37, número 1, do ano de 2019 do Boletim de Geografia da Universidade Estadual de Maringá.
Effect of Sb2O3 Particle Size and Filling Amount on Crystallization and Mechanical Properties of Sb2O3/PP Composites
Authors: Xu Jian Lin , Chen Zhou , Niu Lei , Kang Cheng Hu , Liu Xiao Qi
Published: June 2019

In this paper, Sb2O3/PP composite specimens were prepared by ball milling and melt blending. The effects of Sb2O3 particle size and filling amount on the toughening, reinforcing effect and crystallinity of PP composites were analyzed by notch impact test, tensile test, SEM, XRD and DSC characterization. The experimental results show that the filling of Sb2O3 particles can improve the mechanical properties and crystallization properties of Sb2O3/PP composites. With the increase of filling amount of Sb2O3 particles, the tensile strength and impact strength of Sb2O3/PP composite increased first and then decreased. When the content of Sb2O3 is 2 wt.%, the tensile strength and impact strength of Sb2O3/PP composites reach the maximum. When the filling amount is the same, the crystallization and mechanical properties of nanoSb2O3/PP composites are better than those of micron Sb2O3/PP composites.
Synthesis of Mesoporous Silica and its Adsorption Properties for Chloride Ions
Authors: Ke Guo Jun , Liu Tian Shi , Yang Peng Fei , Tang Xiao Lin
Published: June 2019

A series of mesoporous silica materials (SBA-15, MCM-41, KIT-6) with different pore structures and properties were synthesized and characterized by means of small angle X-ray scattering, transmission electron microscopy, infrared spectroscopy and nitrogen adsorption-desorption. The adsorption properties of three mesoporous silica materials for chlorine ions in aqueous solution were investigated. The results show that SBA-15, MCM-41 with two-dimensional hexagonal structure has a better adsorption effect on chloride ion than KIT-6 With cubic core structure, and MCM-41 with larger specific surface area and smaller pore size has better adsorption effect on chloride ion than on SBA-15. The specific surface area of MCM-41 is 1036 m2/g, and the The adsorption kinetics accords with the pseudo-second-order kinetic model, and the adsorption isotherm is more consistent with the Langmuir isotherm model. The optimum operating conditions for MCM-41 to adsorb chloride ions are as follows: temperature 55 °C, pH 6, adsorption time 2 h, Cl-concentration 0.01 mol/L (584 mg/L) and adsorbent concentration 1.0 g/L. Under these conditions, the adsorption capacity of MCM-41 to chloride ions is greatly enhanced, and the maximum adsorption capacity is 188.18 mg/g.
Preparation of CNTs/MgAl-LDHs Composites and their Adsorption Properties for Chloride Ions
Authors: Ke Guo Jun , Zhou Zhou , Yang Peng Fei , Song Bai Xing
Published: June 2019

Magnesium-aluminum hydrotalcite and carbon nanotube composites (CNTs/MgAl-LDHs) were prepared by one-step hydrothermal method using magnesium nitrate, aluminum nitrate and carbon nanotubes as raw materials and urea as precipitant. The samples were characterized by SEM, XRD, BET and other methods. The adsorption properties of CNTs/MgAl-LDHs on chloride ions and the factors affecting the adsorption of chloride ions were studied. The results show that the prepared CNTs/MgAl-LDHs exhibit a three-dimensional honeycomb structure with a specific surface area of 103.019 m2/g, which is larger than the specific surface area of MgAl-LDHs of 84.344 m2/g. The results showed that the optimal adsorption conditions were: adsorption temperature was 45°C, the pH value was 8, the adsorption time was 100 min, the Cl- concentration was 0.01 M (584 mg/L), and the adsorbent concentration was 1.0 g/L. CNTs/MgAl-LDHs has the best adsorption performance for chloride ions. The maximum adsorption capacity is 75.58 mg/g. The adsorption isotherms and adsorption kinetics are consistent with the Langmuir isotherm model and the quasi-secondary kinetic model.
Influence of Particle Size Distribution of Limestone Powder on Fluidity and Harden Performance of the Cement Paste
Authors: Zhang Guang Tian , Liu Juan Hong , Fu Shi Feng , Ren Shu Xia , Wang Kun
Published: June 2019

Based on the particle size distribution test of 6 kinds of limestone powder, the fractal dimension of particle size distribution was calculated, and its influence on the surface area, median grain diameter and RR-B value was studied. In addition, 20% of the total mass of cement was replaced with limestone powder, and the effect of fractal dimension on fluidity of cement paste and 3, 7, 28d strength of mortar was investigated. The results showed that fractal dimension for limestone powder specific surface area has a good linear relationship with median grain diameter and RR-B value. The fractal dimension showed a quadratic function with the degree of the fluidity, and the maximum value was between 2.1-2.2. Mortar strength at the age of 3, 7, 28d value displayed a linear relationship with fractal dimension L4 had the greatest effect on strength. L1-L4 had more influence on the strength at the age of 3d and 7d than that of 28d. While the influence of L5-L7 on the strength at 3d, 7d and 28d was essentially similar to each other.
Realization of Mechanical Properties Prediction from Nano- to Macro- Scale Structure: An Achievement of C-S-H Hydrated Phases
Authors: Fu Jia
Published: June 2019

The performance prediction of C-S-H gel is critical to the theoretical research of cement-based materials. In the light of recent computational material technology, modeling from nano-scale to micro-scale to predict mechanical properties of structure has become research hotspots. This paper aims to find the inter-linkages between the monolithic "glouble" C-S-H at nano-scale and the low/high density C-S-H at the micro-scale by step to step method, and to find a reliable experimental verification method. Above all, the basic structure of tobermorite and the "glouble" C-S-H model at nano-scale are discussed. At this scale, a "glouble" C-S-H structure of about 5.5 nm3 was established based on the 11Å tobermorite crystal, and the elastic modulus ​​of the isotropic "glouble" is obtained by simulation. Besides, by considering the effect of porosity on the low/high density of the gel morphology, the C-S-H phase at micro-scale can be reversely characterized by the "glouble". By setting different porosities and using Self-Consistent and Mori-Tanaka schemes, elastic moduli of the low density and high density C-S-H ​​from that of "glouble" are predicted, which are used to compare with the experimental values of the outer and inner C-S-H. Moreover, the nanoindentation simulation is carried out, where the simulated P-h curve is in good agreement with the accurate experimental curve in nanoindentation experiment by the regional indentation technique(RET), thus the rationality of the "glouble" structure modeled is verified and the feasibility of Jennings model is proved. Finally, the studies from the obtained ideal "glouble" model to the C-S-H phase performance has realized the mechanical properties prediction of the C-S-H structure from nano-scale to micro-scale, which has great theoretical significance for the C-S-H structural strengthening research.
Dispersion Properties of Nano-SiO2 under Single and Combined Actions of Sodium Hex Metaphosphate and Polycarboxylate Superplasticizer
Authors: Xu Yao Qun , Li Shu Guang , Ji Tao , Chen Gai Xin
Published: June 2019

Separate and combined effects of sodium hex metaphosphate (SHMP) and polycarboxylate superplasticizer (PCS) of different dosages (0.5%, 1%, 1.5%, and 2%) on the dispersion stability of nanoSiO2 (NS) were studied. The effect of the dispersant was characterized by the change of absorbance. When SHMP and PCS were used separately and in combination, the stability of nanoSiO2 dispersions was compared and the optimal amount of dispersant for different dosage of nanoSiO2 dispersions were summarized. Finally, the mechanism of dispersant compounding was discussed. The results show that with the increase of the concentration, the optimal amount of SHMP increases significantly while the optimal amount of PCS dispersant is lower and better than SHMP. A clear linear relationship between the optimal dosage of SHMP and the concentration of NS could be found. If SHMP is used combined with PCS, the stability of the dispersed NS will increase and the dosages of both dispersants will be reduced.
Extracellular Polyphosphate Promotes Macrophage and Fibrocyte Differentiation, Inhibits Leukocyte Proliferation, and Acts as a Chemotactic Agent for Neutrophils
Authors: Suess Patrick M. , Chinea Luis E. , Pilling Darrell , Gomer Richard H.
Published: June 2019

Fibrocytes are monocyte-derived fibroblast like cells that participate in wound healing, but little is known about what initiates fibrocyte differentiation. Blood platelets contain 60–100-mer polymers of phosphate groups called polyphosphate, and when activated, platelets induce blood clotting (the first step in wound healing) in part by the release of polyphosphate. We find that activated platelets release a factor that promotes fibrocyte differentiation. The factor is abolished by treating the crude platelet factor with the polyphosphate-degrading enzyme polyphosphatase, and polyphosphate promotes fibrocyte differentiation. Macrophages and recruited neutrophils also potentiate wound healing, and polyphosphate also promotes macrophage differentiation and induces chemoattraction of neutrophils. In support of the hypothesis that polyphosphate is a signal that affects leukocytes, we observe saturable binding of polyphosphate to these cells. Polyphosphate also inhibits leukocyte proliferation and proteasome activity. These results suggest new roles for extracellular polyphosphate as a mediator of wound healing and inflammation and also provide a potential link between platelet activation and the progression of fibrosing diseases.
Value Sets of Sparse Polynomials
Authors: Shparlinski Igor E. , Voloch José Felipe
Published: June 2019

We obtain a new lower bound on the size of the value set$\mathscr{V}(f)=f(\mathbb{F}_{p})$of a sparse polynomial$f\in \mathbb{F}_{p}[X]$over a finite field of$p$elements when$p$is prime. This bound is uniform with respect to the degree and depends on some natural arithmetic properties of the degrees of the monomial terms of$f$and the number of these terms. Our result is stronger than those that can be extracted from the bounds on multiplicities of individual values in$\mathscr{V}(f)$.
Gambling Among Emerging Adults: How Gender and Risk Level Influence Associated Problem Behaviours
Authors: Sanscartier Matthew D , Shen Jack , Edgerton Jason D
Published: June 2019

This study investigates mental health and substance use problems associated with gambling among Canadian emerging adults (ages 18–20 years). Drawing on a cross-sectional wave of 624 (47.8% male) participants from the Manitoba Longitudinal Study of Young Adults, our findings suggest that among emerging adults, problem gambling should be understood as part of a wider syndrome. The profile of syndromic associations varies with both problem gambling risk level and gender. With respect to risk level, regression models indicate that, relative to no-risk gamblers, lower risk gamblers are more likely to use drugs and alcohol, whereas higher risk gamblers report greater symptoms of depression and anxiety. Males and females present different barriers to recovery: High-risk female gamblers are more likely to rely on escape-avoidance coping mechanisms, whereas their male counterparts tend to lack perceived social support. Given the centrality of these two variables and the lack of literature addressing how they interact, we conclude that further research is needed to understand how gender and gambling severity interact to simultaneously influence gambling-related behaviours among emerging adults. RésuméCette étude porte sur les problèmes de santé mentale et de toxicomanie associés au jeu chez les jeunes adultes canadiens (âgés de 18 à 20 ans). Fondés sur une vague transversale de 624 participants (47,8% d’hommes) de l’étude longitudinale des jeunes adultes du Manitoba (MLSYA), nos résultats laissent entendre que, parmi les jeunes adultes, le jeu problématique devrait être abordé comme faisant partie d’un syndrome plus vaste. Le profil des associations syndromiques varie selon le niveau de risque de jeu problématique et le genre. En ce qui concerne le niveau de risque, les modèles de régression indiquent que, par rapport aux joueurs sans risque, les joueurs à faible risque sont plus susceptibles de consommer de la drogue et de l’alcool, tandis que les joueurs à risque plus élevé montrent des symptômes plus importants de dépression et d’anxiété. En parallèle, les hommes et les femmes rencontrent différents obstacles au rétablissement : les joueuses à haut risque sont plus susceptibles de compter sur des mécanismes d’adaptation comme l’échappement ou l’évitement, tandis que leurs homologues masculins ont tendance à manquer de soutien social perçu. Compte tenu de la centralité de ces deux variables et du manque de littérature traitant de leurs interactions, nous concluons qu’il est nécessaire de poursuivre les recherches pour comprendre les interactions entre le genre et la gravité du jeu pathologique afin d’influencer simultanément les comportements liés au jeu chez les jeunes adultes.
Bioatividade de óleos essenciais na germinação e no vigor em sementes de tomate
Authors: Almeida Luzirene , Teixeira Maria Conceição , Lemos Jesus Rodrigues , Lacerda Mairla Nascimento , Silva Taline Cunha
Published: June 2019

A alelopatia é o efeito de uma planta sobre outra por intermédio da produção de compostos químicos que são liberados no meio ambiente. Portanto, objetivou-se identificar os efeitos alelopáticos de extratos voláteis de óleos essenciais de colônia (Alpinia zerumbet (Pers.) B. L. Burtt. & R. M. Sm.), goiaba (Psidium guajava L.) e nim (Azadirachta indica A. Juss) na germinação e no comprimento da raiz de plântulas de tomate (Lycopersicum esculentum). Os óleos foram extraídos das folhas de plantas adultas, por arraste a vapor de água. Foram utilizadas cinco concentrações de cada óleo (0,0; 0,25; 0,50; 0,75 e 1,0%, v/v), em delineamento inteiramente casualizado, com quatro repetições de 25 sementes. Para o teste de germinação foram avaliados os parâmetros: porcentagem de germinação (G%) e índice de velocidade de germinação (IVG). Para o crescimento inicial foram avaliados o comprimento da radícula (CR) e o comprimento da parte aérea (CPA). O óleo de colônia inibiu a germinação na concentração de 1%, bem como reduziu o IVG; nas concentrações de 0,75% e 1% inibiu totalmente o comprimento radicular e o comprimento da parte aérea. Para o óleo de goiaba houve redução na germinação com o aumento das concentrações.
A Influência da mídia para o consumo de tabaco
Authors: Gervásio Angelini Maria Carolina , Vedovato Luís Renato
Published: June 2019

O presente artigo, tendo como foco a influência da mídia para o consumo do tabaco no mundo, procura demonstrar que a publicidade e a propaganda são capazes de induzir as pessoas ao fumo, mediante ténicas enganosas para aumentar e manter o número de clientes. Para tanto, as divulgações midiáticas antes e depois da criação da Convenção-Quadro para Controle do Tabaco (CQCT) serão aqui elucidadas. Em seguida é feita a análise da restrição total das publicidades e das propagandas, que se mostra como adequada, necessária e proporcional em sentido estrito para fazer valer o direito a vida e a saúde em detrimento da liberdade de expressão e de comunicação. É realizada uma análise doutrinária meramente dogmática, além de análise de dados. Ressalta-se que o trabalho é original e busca mostrar a sociedade, principalmente aos fumantes e aos jovens (potencial consumidor), as artimanhas utilizadas pela indústria de cigarros, com relação a publicidade e a propaganda, para incentivar o fumo e que, mesmo com a CQCT, a tabaqueira não deixa de criar mecanismos para propagar seus produtos.
Relicitação das concessões de geração de energia elétrica e a reversão de bens
Authors: Sampaio Patrícia Regina Pinheiro , Guerra Sergio
Published: June 2019

Este artigo endereça questões que circundam a disciplina jurídica dos bens reversíveis na geração de energia elétrica, tendo em vista a autorização legal de que possa haver relicitação sem prévia reversão de bens. A metodologia baseia-se na análise de textos legais e na bibliografia aplicável, apresentando a evolução do tema ao longo do tempo. Inicialmente, analisa-se o conceito de bens reversíveis e a classificação dos bens das concessionárias de serviços públicos à luz da reversibilidade. Na sequência, discutem-se os efeitos da mudança regulatória produzida pela Medida Provisória 579/2012, ao possibilitar a renovação antecipada de concessões e disciplinar a relicitação sem prévia reversão de bens. Conclui-se que a inclusão da possibilidade de relicitação de concessões, sem prévia reversão de bens, traz desafios práticos ao setor, por ausência de clara disciplina jurídica do tema, propondo-se sugestões práticas para solucioná-lo. A inovação do artigo reside em realizar propostas de endereçamento do problema, atualmente sem clara solução legislativa.
OzoNet: Atmospheric Ozone Interpolation with Deep Convolutional
Neural Networks
Authors: Zaytar Mohamed Akram , El Amrani Chaker
Published: June 2019

Abstract. We propose a deep learning method for Atmospheric Ozone Interpolation. Our method directly learns an end-to-end mapping between classically interpolated satellite ozone images and the real ozone measurements. The model's architecture represents a deep stack of convolutions (CNN) that takes the already interpolated images (Using the classical state-of-the-art interpolation method) as Input and outputs a more precise Interpolation of the Region of Interest. Our deep CNN has a lightweight structure, yet demonstrates state-of-the-art interpolation quality, and achieves optimal data processing latency (∆T) for production-ready near-real-time Atmospheric Image Interpolation, which has a big advantage over the state of the art classical interpolation algorithms. We explore different network structures and parameter settings to achieve trade-offs between performance and speed. This method showcases the potential applications of deep learning in Remote Sensing and Climate Science.
Reconstruction of past marine submersion events (storms and
tsunamis) on the North Atlantic coast of Morocco
Authors: Khalfaoui Otmane , Dezileau Laurent , Degeai Jean-Philippe , Snoussi Maria
Published: June 2019

Abstract. The North Atlantic coast of Morocco has been affected historically by marine submersion events resulting from both storms and tsunamis and causing human and economic losses. The development of proactive adaptation strategies requires the study of these events over centennial to millennial timescales. Using a 2.7 m sediment core sampled from the Tahaddart estuary, we have been able to reconstruct past marine submersion events on this coastal area of Morocco over the last 4000 years. The high-resolution sedimentological and geochemical analysis conducted on this core allows us to identify 14 sediment layers attributed to marine high-energy events. The core was dated with isotopic techniques (137Cs, 210Pbex, 14C) and the outcomes reveal that three sediment layers are in connection with two major historical marine submersion events. The first layer mentioned as E1 seems to fit with the great Lisbon tsunami in 1755 CE (Common Era), an event dated for the first time on the Atlantic coast of Morocco. The other two layers referred as E13 and E14 were dated between 3464 and 2837 cal BP and correlated with marine submersion deposits found on Spanish and Moroccan coasts, which confirms the existence of a major high-energy event (around 3200 BP) similar to the one in 1755 CE.
Economic Benefits from Biking Trails and Greenways
Authors: Chakraborty Kalyan
Published: June 2019

Due to a growing need for health and wellbeing of the urban population and revitalization of the rural economies biking has become one of the top recreational activities is the U.S. While the impact of individual health and wellbeing from biking activities well recognized in the literature, the economic impact of bike tourism in rural communities is less recognized. The purpose of this paper is to review the studies on the economic impact of biking trails and greenways on the local communities and provide a guideline on how to undertake such studies based on available methodologies in the literature. In doing so, the paper discusses the objectives and goals for creating infrastructure for greenway and biking trails in the local communities including methodologies used to assess the economic impacts. This study concludes that for a long-run sustainable development, local community’s social and economic resources that already exist can be utilized for building biker friendly communities.