bluuebunny/crossref_metadata_2025_split huggingface dataset:
The Vortex
Authors: Rivera José Eustasio 
Published: April 2018

Published in 1924 and widely acknowledged as a major work of twentieth-century Latin American literature, José Eustasio Rivera's The Vortex follows the harrowing adventures of the young poet Arturo Cova and his lover Alicia as they flee Bogotá and head into the wild and woolly backcountry of Colombia. After being separated from Alicia, Arturo leaves the high plains for the jungle, where he witnesses firsthand the horrid conditions of those forced or tricked into tapping rubber trees. A story populated by con men, rubber barons, and the unrelenting landscape, The Vortex is both a denunciation of the sensational human-rights abuses that took place during the Amazonian rubber boom and one of the most famous renderings of the natural environment in Latin American literary history.
Singly and Doubly Sulfone-Inserted Porphyrin Arch-Tape Dimers
Authors: Fukui Norihito , Osuka Atsuhiro 
Published: April 2018

Abstract
A singly sulfone-inserted porphyrin arch-tape dimer was synthesized from 2-iodoporphyrin via stepwise transformations consisting of palladium-catalyzed cross-coupling reaction with bis(tributylstannyl) sulfide, tungsten-catalyzed oxidation with hydrogen peroxide, and oxidative fusion with AuCl3 and AgOTf. This new synthetic protocol enabled the synthesis of doubly sulfone-inserted arch-tape dimer as the first example of arch-tape dimer containing two neighboring seven-membered rings. These sulfone-inserted porphyrin arch-tape dimers were fully characterized by X-ray crystal structural analysis, NMR and UV/Vis/NIR absorption spectroscopies, cyclic voltammetry, and theoretical calculations. Furthermore, arch-to-arch inversion dynamics of arch-tape dimers were examined by subjecting newly synthesized mesityl-substituted porphyrin arch tapes to the variable temperature 1H NMR measurements.
LEAD SOURCE ASSESSMENT BY ISOTOPIC AND ELEMENTARY COMPOSITION IN THE TRANSITION FROM PRISTINE TO POLLUTED CONDITION OF COASTAL SEDIMENTS / AVALIAÇÃO DAS FONTES DE PB PELAS COMPOSIÇÕES ISOTÓPICAS E ELEMENTARES DE SEDIMENTOS COSTEIROS NA TRANSIÇÃO DE CONDIÇÕES NATURAIS PARA POLUÍDAS
Authors: Cunha Bruno , Machado Wilson , Marra Ariadne , Araújo Daniel , Garnier Jérémie , Martins Alan , Saliba Bruno , Geraldes Mauro 
Published: April 2018

The source assessments of metal contaminants are critical for a consistent management of coastal zones. In this work, lead (Pb) concentration and isotopic composition were determined in sediments from Angra dos Reis coast (Brazil) to evaluate the potential influence of contamination sources on Pb distribution. Estimated Pb enrichment factor superior to 1.64 suggested natural source predominance. Diagrams of 206Pb/207Pb ratio plotted against 208Pb/206Pb and 1/Pb ratios indicated a binary source mixing that was explained by marine and terrigenous influences. Only some specific sites fall close to anthropogenic Pb isotopes signatures (e.g., from urban effluents and gasoline). The lower Pb concentrations were associated with a marine carbonate dilution effect, as indicated by a negative relationship between Pb and Ca. Past dredging activities contributed to explain a diffuse occurrence of anthropogenic Pb isotopic signature. The overall results reveal the beginning of a transition from pristine to slightly-polluted condition. ResumoA avaliação das fontes dos contaminantes metálicos é fundamental para um bom gerenciamento das zonas costeiras. Neste trabalho, as concentrações e composições isotópicas do chumbo (Pb) foram determinadas em sedimentos do litoral de Angra dos Reis (Brasil) para avaliar a potencial influência das fontes de contaminação na distribuição de Pb. Fatores de enriquecimento de Pb de até 1,64 sugeriram predominância de fontes naturais. Diagramas da razão 206Pb/207Pb plotados contra as razões 208Pb/206Pb e 1/Pb indicaram uma mistura binária de fontes, que foi explicada por influências marinhas e terrígenas. Apenas alguns locais específicos possuem assinaturas isotópicas similares às antropogênicas (por exemplo, de efluentes urbanos e gasolina). As concentrações mais baixas de Pb foram associadas a um efeito de diluição pelo carbonato marinho, como indicado por uma relação negativa entre Pb e Ca. Atividades de dragagem no passado contribuíram para explicar uma ocorrência difusa da assinatura isotópica de Pb antropogênico. Os resultados, em geral, revelam o início de uma transição da condição natural para levemente poluída.
Disputas e limites da Comissão da Verdade no Brasil
Authors: Salgado Livia De Barros 
Published: April 2018

As primeiras medidas brasileiras na formulação de políticas de memória e tentativas de resignificar o passado autoritário datam os anos 1990, muito em função da pressão exercida por familiares de mortos e desaparecidos e perseguidos políticos. A forma como se dava o debate a respeito da ditadura no país, até então, não garantia o acesso à verdade àqueles que sofreram violência. Com o estabelecimento da Comissão Nacional da Verdade, em 2012, esse passou a ser o objetivo. Porém, muitos foram os dilemas enfrentados para que a proposta fosse colocada em prática, o que acabou por refletir na forma como essa “verdade” foi formulada e na realização dos trabalhos da Comissão.. Diante do exposto, o objetivo desse artigo é analisar o processo de instauração da CNV, apresentando as disputas políticas que a envolveram, além das críticas dirigidas aos seus trabalhos. Palavras-chave: comissão nacional da verdade; disputas políticas; limites
As tragédias dos bairros onde moram
Authors: Batista Vera Malaguti 
Published: April 2018

O presente artigo trata dos desafios da "transição democrática" no Brasil a partir das permanências históricas do autoritarismo presentes na colonização, na escravidão e na constituição de uma República que aposta na manipulação do povo brasileiro contra seus desejos de emancipação e protagonismo político. Assistimos, com relação à questão criminal, a passagem de uma resistência à truculência no fim da ditadura à sua naturalização e agora ao aplauso legitimado pela "guerra às drogas" e o deslocamento do "inimigo interno" dos "subversivos" para os "traficantes". O GTNM-RJ constituiu-se nesse cenário em "dique utópico à barbárie" ao compreender as novas demandas por ordem e posicionar-se firmemente na luta pelos direitos atingidos pelas políticas criminais contemporâneas. Palavras-chaveviolência, controle social, criminologia, direito
Longer duration of symptoms at the time of presentation is not associated with worse survival in primary bone sarcoma
Authors: Lawrenz J. M. , Styron J. F. , Parry M. , Grimer R. J. , Mesko N. W. 
Published: April 2018

Aims The primary aim of this study was to determine the effect of the duration of symptoms (DOS) prior to diagnosis on the overall survival in patients with a primary bone sarcoma. Patients and Methods In a retrospective analysis of a sarcoma database at a single institution between 1990 and 2014, we identified 1446 patients with non-metastatic and 346 with metastatic bone sarcoma. Low-grade types of tumour were excluded. Our data included the demographics of the patients, the characteristics of the tumour, and the survival outcome of patients. Cox proportional hazards analysis and Kaplan–Meier survival analysis were performed, and the survivorship of the non-metastatic and metastatic cohorts were compared. Results In the non-metastatic cohort, a longer DOS was associated with a slightly more favourable survival (hazard ratio (HR) 0.996, 95% confidence interval (CI) 0.994 to 0.998, p < 0.001). In all types of tumour, there was no difference in survival between patients with a DOS of greater than four months and those with a DOS of less than four months (p = 0.566). There was no correlation between the year of diagnosis and survival (p = 0.741). A diagnosis of chondrosarcoma (HR 0.636, 95% CI 0.474 to 0.854, p = 0.003) had the strongest positive effect on survival, while location in the axial skeleton (HR 1.76, 95% CI 1.36 to 2.29, p < 0.001) had the strongest negative effect on survival. Larger size of tumour (HR 1.05, 95% CI 1.03 to 1.06, p < 0.001) and increased age of the patient (HR 1.02, 95% CI 1.01 to 1.03, p < 0.001) had a slightly negative effect on survival. Metastatic and non-metastatic cohorts had similar median DOS (16 weeks, p = 0.277), although the median survival (15.5 months vs 41 months) and rates of survival at one year (69% vs 89%) and five years (20% vs 59%) were significantly shorter in the metastatic cohort. Conclusion A longer DOS prior to diagnosis is not associated with a poorer overall survival in patients with a primary bone sarcoma. Location in the axial skeleton remains the strongest predictor of a worse prognosis. This may be helpful in counselling patients referred for evaluation on a delayed basis. Cite this article: Bone Joint J 2018;100-B:652–61.
Analysis Possibilities of Controlled Transport of Moisture in Woven Fabrics
Authors: Sirková Brigita Kolčavová , Moučková Eva 
Published: April 2018

Abstract
The article is focused on testing of selected properties of linear and planar textiles from modified cotton yarns. In this article, the influence of woven fabric construction on wettability and possibilities of detection of moisture in the woven fabric is analyzed. Improving the physiological and hygienic properties for woven fabrics can be achieved with a specially designed textile structure in combination with a permanent surface finish of sub-set of yarns. Inserting of hydrophilic and hydrophobic set of threads in the woven structure makes possible controlled water transport. Controlled transport of water ensures good clothing comfort. Using such woven fabric, accumulation of water on the skin does not occur during the process of thermoregulation of the human body. The properties and behavior of the designed fabric will be determined by surface finishing of the warp and weft yarns (sub-set of yarns), which are supporting elements of the fabric.
Endogenous Timing in Vertically-Related Markets
Authors: Din Hong-Ren , Sun Chia-Hung 
Published: April 2018

Abstract
This paper investigates the theory of endogenous timing by taking into account a vertically-related market where an integrated firm competes with a downstream firm. Contrary to the standard results in the literature, we find that both firms play a sequential game in quantity competition and play a simultaneous game in price competition. Under mixed quantity-price competition, the firm choosing a price strategy moves first and the other firm choosing a quantity strategy moves later in equilibrium. Given that the timing of choosing actions is determined endogenously, aggregate profit (consumer surplus) is higher (lower) under price competition than under quantity competition. Lastly, social welfare is higher under quantity competition than under price competition when the degree of product substitutability is relatively low.
Evaluation of activated composite membranes for the facilitated transport of phenol
Authors: Pérez-Silva Irma , Galán-Vidal Carlos A. , Ramírez-Silva María T. , Álvarez Romero Giaan A. , Páez-Hernández Ma. Elena 
Published: April 2018

Abstract
In this work the results on the first use of an activated composite membrane (ACM) containing Cyanex 923 for the extraction and transport of phenol are presented. A new dense layer-ACM configuration constituted by piperazine showed better stability than that prepared with 1,3-phenylenediamine. The effects of several parameters on the transport of phenol such as feed phase pH, carrier concentration and stripping phase composition were evaluated. The performance of the membrane was also evaluated during continuous additions of phenol and for a long period of time, observing the same rate of extraction and reextraction. Moreover, phenol transport was evaluated starting from synthetic wastewater of resin production plants type. The results exhibit the potential use of ACMs in the elimination and transport of organic species, even when analyte is initially found in complex solutions.
Which average of copolymer composition does NMR provide?
Authors: Radke Wolfgang 
Published: April 2018

Abstract
While in molar mass determinations different averages are clearly distinguished, such differentiation is usually not performed when dealing with the composition of copolymers or polymer blends. The present article shows that the mol ratio calculated by nuclear magnetic resonance (NMR) usually provides neither a weight nor a number average. Only if the composition does not vary with molar mass, or if both copolymer units are of equal molar mass, a weight average mol ratio is obtained from NMR measurements. The frequent assumption that NMR yields a number average composition is incorrect, therefore. However, the mass fraction calculated from NMR corresponds to the weight average mass fraction.
Crystal structure of methyl (1-phenylethyl)carbamate, C10H13NO2
Authors: Thakar Amit S. , Pansuriya Pramod B. , Friedrich Holger B. , Maguire Glenn E. M. 
Published: April 2018

Abstract
C10H13NO2, monoclinic, P21 (no. 14), a = 9.9882(7) Å, b = 8.5202(6) Å, c = 23.1403(18) Å, β = 91.010(2)°, V = 1969.0(2) Å3, Z = 8, R
gt(F) = 0.0387, wR
ref(F
2) = 0.0919, T = 173(2)K.
Crystal structure of (E)-4,6-diiodo-2-(((4-methoxy-2-nitrophenyl)imino)methyl)-3-methylphenol, C14H10I2N2O4
Authors: Hong Yong 
Published: April 2018

Abstract
C14H10I2N2O4, triclinic, P1̄ (no. 2), a = 9.2216(4) Å, b = 9.7072(5) Å, c = 10.0628(5) Å, α = 61.778(2)°, β = 77.716(2)°, γ = 79.144(2)°, V = 771.49(7) Å3, Z = 2, R
gt(F) = 0.0184, wR
ref(F
2) = 0.0542, T = 150(2) K.
Physicochemical Stability of Extemporaneously Prepared Oral Suspension of Fluconazole 50 mg/mL in SuspendIt™
Authors: Ip Kendice , Shan Ashley , Carvalho Maria , Baker Stacey , Banov Daniel 
Published: April 2018

Abstract

Background
There is a lack of an age-appropriate formulation of fluconazole. The extemporaneous preparation of an oral suspension with an extended beyond-use-date may represent a good therapeutic alternative for the paediatric population.

Methods
A fluconazole 50 mg/mL oral suspension was prepared and evenly distributed into twenty amber plastic bottles: ten bottles were stored in controlled room temperature (25 °C) whereas the remainder ten bottles were stored in refrigerated temperature (5 °C). The physical characteristics (colour/appearance, odor, pH and density) and chemical characteristics [fluconazole concentration using Ultra High Performance Liquid Chromatography (UPLC)] of the oral suspension were tested at nine pre-determined time-points over a period of 182 days.

Results
The density, pH and mean concentration of the oral suspension did not change significantly. The recovery of fluconazole ranged from 92.67 % to 98.79 % (5 °C) and from 94.31 % to 100.02 % (25 °C), both within the specification limits.

Conclusions
A palatable, sugar-free formula was developed for fluconazole 50 mg/mL in the oral suspending vehicle SuspendIt™ to allow an easy and rapid extemporaneous preparation in the hospital setting. The beyond-use-date of the formula was determined using a valid, stability-indicating analytical method and it was concluded that the extemporaneously prepared oral suspension is stable for 6 months at refrigerated and controlled room temperature.
Hat Papstgeschichte Zukunft?
Authors: Reinhard Wolfgang 
Published: April 2018

Riassunto
Sembra che almeno in Germania si stia esaurendo l’attivita editoriale che riguarda i rapporti mandati dai nunzi alla segreteria di Stato. Nella digitalizzazione delle fonti si puo ravvisare una valida alternativa compensatoria, tanto piu che essa consentirebbe di creare una vasta banca dati che, raccogliendo i dati di tutte le persone e tutti gli uffici della curia, offrirebbe un’ottima base per ulteriori ricerche. In ogni caso e possibile raccordare la storia dei papi al nuovo approccio decostruttivista della storia politica e culturale, se si pone al centro dell’attenzione il papato nella sua qualita di singolare potenza culturale che coltiva una sua singolare cultura del potere. Decisiva e la constatazione che la chiesa papale non solo funse da modello per la formazione degli Stati europei, ma sarebbe diventata Stato essa stessa. In questo senso sarebbero auspicabili studi a lungo termine sul personale e sulle istituzioni. Accanto a questa storia materiale sarebbero utili sia l’indagine della devozione personale dei papi, e in particolare del culto mariano, che l’esplorazione del culto del papa e di altre pratiche premoderne, ma tuttora vive, nei credenti.
Study of electrokinetic and magnetic properties of ZrNi1-xRhxSn semiconductive solid solution
Authors: Romaka L.P. , Stadnyk Yu.V. , Romaka V.A. , Horyn A.M. , Krayovskyy V.Ya. 
Published: April 2018

The features of electrokinetic, energy state and magnetic characteristics of ZrNi1-xRhxSn semiconductive solid solution were investigated in the ranges: T = 80-400 K, x = 0-0.10. It was shown that substitution of Ni atoms (3d84s2) by Rh atoms (4d85s1) in the structure of ZrNiSn compound generated the structural defects with acceptor nature, and holes became the main charge carriers in the ZrNi1-xRhxSn at low temperature. Based on analysis of the motion rate of the Fermi level ΔεF/Δх in ZrNi1-xRhxSn to the valence band and change of sign of thermopower coefficient from positive to negative it was suggested that the structural defects of acceptor and donor natures were generated simultaneously (donor-acceptor pairs), and deep donor band ɛD2 was formed.
A quantum chemistry study on the interaction between silica surface and aqueous alkaline solutions
Authors: Kravchenko A. A. , Demianenko E. M. , Grebenyuk A. G. , Lobanov V. V. 
Published: April 2018

A quantum chemical analysis has been carried out of the equilibrium structure and energy parameters of hydrated Li+, Na+, and K+ cations interacting with ionized silica surface by means of density functional theory method with extended basis set 6-31++G(d,p) and exchange-correlation functional B3LYP. The calculated adsorption energy values related to those cations reproduce the experimental adsorption row of alkali metal cations at pH = 10.
Reproductive qualities, exterior features and the quality of the pery of obroshinsky gray geese at their dissolution «inside»
Authors: Sloboda L. , Sloboda O. 
Published: April 2018

It was found that the average live weight of geese at the beginning of the oviposition was (OS – 3% X OS – 3%): goose – 6.10 kg, goose – 7.30 kg, and (OS – 5% X OS – 5♂): goose – 6,30 kg, goose – 7,37 kg. The average weight of OS–3 goose was 39.5 eggs per head, and OS–5 – 41.4 eggs. At the same time, the average weight of eggs in the 1st group was 154.3 g, and in II – 158.5 g. The indexes of the forms in the I group consisted of: the length of the egg – 84.4 mm, the width – 55.4 mm, the index of form 65.6 in the second group respectively – 84.3 mm; 56.3 mm; 66.7 mm. The study of the incubation qualities of eggs indicates that the higher fertility was in the goose of the second group and amounted to 85.3%, which is 0.9% more compared with the I group. It is known that the yield of caterpillars is dependent on fertility and in the 1st group this indicator was 71.8%, which is 4.3% less than in the second group (76.1%). At 9 weeks of age, males of the II group surpassed their peers from the 1st group by chest covering 1.79%., With a body length of 2.08%, and a kilo length of 7.14%. The same tendency was observed in the shoots of the shin and plyusny, so the males of group ІІ in the first indicator dominated the male and group I by 8,19%; in the second indicator males of the II group dominated the males of the I group by 6.68%. At 9 weeks of age, females of group ІІ grouped over their breasts over their peers from the 1st group by 2.40%, with the body length by 3.21%., With the length of the keel – by 2.34%. Length of the leg and shoulders in the females of the 2nd group were the largest and dominated by females and groups I by the first indicator at 5.26%; in the second indicator, females of the second group dominated the females of the I group by 1.08%. Males at all investigated periods had higher levels of total protein in serum than females. It was found that males at all investigated periods had higher levels of total protein in serum than females. Performance indicators of Ohorin gray geese (Group I) consisted of: carcass weight – 39.5 pc. on the head; the weight of eggs – 154.3 g; fertility – 84.4%; deductibility – 71.8%; the live weight of geese in the 9-week-old age is 4.52 kg males and 3.84 kg females; preservation – 90.7%. Obroshinsky gray goose (group II) are characterized by the highest indexes in relation to the first group: for fertility by 4.8%, fertility by 0.9%, output by 4.9%, live weight of geese at 9 weeks of age (males) – 1.99%, (females) by 0.52%, preservation – 2.90%, egg mass – 2.64%. The highest feather-down raw material was obtained at the age of 18 in geese I group. The basic indices of blood of the examined geese were within the acceptable limits of the norm.
Hematologic indices of the young rabbits with the preparation of the prebiotic preparation
Authors: Tsyganchuk O. B. 
Published: April 2018

Blood is a liquid tissue that carries in the body the transport of chemicals, thanks to which the integration of biochemical processes takes place that take place in various cells and intercellular spaces, into a single system. The purpose of the study was to investigate the effect of feeding various doses of Prebiolact-Kr on the morphological and biochemical parameters of the blood of repairing young rabbits. One of the new feed additives with prebiotic action is Prebiolakt-Kr, which was created by employees of the scientific and biotechnological enterprise «BTU Center» in Ladyzhin, Vinnytsia region. Studies were carried out on four groups of young rabbits, selected for the principle of analogs of 25 heads in each. The material for the scientific and economic experience was the rabbit of the modern meat hybrid hyplus. The comparative period lasted for seven days. The duration of the main period of the experiment is 126 days. The animals of the second group received Prebiolact-Kr in the amount of 1.5 g for the full-scale granulated mixed fodder, the third for 2.0 grams and the fourth for 2.5 grams per head per day. Blood for research was selected for serological plugs by puncturing the terminal ear vein with an injection needle. When taking blood, the rules of asepsis and antiseptics were observed. The picture of the state of blood is a symptomatic reflection of changes in the intensity of all metabolic processes that occur in the body of animals under the influence of certain food factors. As studies have shown, the number of uniform elements is within the limits of the norm, at the level of the control group. However, those deviations that were observed in the experiment were unbelievable. The positive result is that the administration of the drug did not affect the content of macro- and microelements in the blood, so it can be concluded that the administration of Prebiolact-Kr in the diet of experimental animals did not cause changes in the morphological and biochemical parameters of the blood.
One modification of k-ε turbulent model of two-phase flows
Authors: Lien Hoang Duc , Antonov I. S. , Nam Nguyen Thanh 
Published: April 2018

A modification of k-ε turbulent model is described with application to the numerical investigation of two-phase turbulent jets. In difference of existed two-parameter models, new three-parameter modification have been suggested. In this case an additional equation for transportation of turbulent energy of admixture – kP is used together with equations of transportation of carrier-phase turbulent energy – kg and its dissipation - ε. Additional dissipation terms in the above mentioned equations are defined in connection with a new examination of the between-phases interaction forces determining jet flows.