bluuebunny/crossref_metadata_2025 huggingface dataset:
Филогенетическая биогеография порядка Dioscoreales: молекулярно-генетический анализ
Authors: Гай В. Е. , Бобров А. В. , Здравчев Н. С.
Published: July 2019

Проведено молекулярно-генетическое исследование (по трем генам) представителей трех семейств порядка Dioscoreales (Dioscoreaceae, Burmanniaceae, Nartheciaceae). Установлено, что местом гипотетического обособления порядка Dioscoreales является Юго-Восточная Азия. После чего, наиболее вероятно, Rajania (Dioscoreaceae) расселилась дальним транспортом в Америку. Следующее филогенетическое событие – отделение Geomitra от остальных Dioscoreales – можно интерпретировать как викарное расселение. Впоследствии, вероятно, произошло вторичное заселение Центральной Америки, также дальним транспортом, где происходило викарное расселение в трех направлениях: северо-восточном – вплоть до восточного побережья Северной Америки; южном – до северной Аргентины; восточном – до Атлантического побережья материка. После чего так же, вероятно, дальним транспортом произошло заселение Африки и последующее викарное расселение в трех направлениях: северном – до Сахары; восточном – до побережья материка, а затем на Мадагаскар; южном – до северной части Южной Африки. После отделения остальных Dioscoreales от Burmanniaceae, Avetra, вероятнее всего, проникла на Мадагаскар дальним транспортом через Америку, а затем Африку. Dioscorea распространялась викарным путем на запад до Западной Азии, на юг до северного и северо-западного побережья Австралии, дальним транспортом в Америку, а затем викарно или, вероятно, дальним транспортом до юга Южной Америки и дальнимтранспортом в Африку и Европу.
Особенности анатомического строения семенной кожуры Viola hirta L. и Viola selkirkii Pursh (Violaceae)
Authors: Елисафенко Т. В. , Полубоярова Т. В.
Published: July 2019

Представлена структура семенной кожуры (спермодермы) зрелых семян Viola hirta L. из cекции Viola и Viola selkirkii Pursh. из секции Violidum. Дано описание слоев тесты и тегмена. Предложенная обобщеннаясхема строения семенной кожуры рода Viola может использоваться для анализа ее модификации у видов рода.
Оценка внутривидовой изменчивости анатомо-морфологических параметров хвои Juniperus сommunis L.
Authors: Князева С. Г. , Хантемирова Е. В.
Published: July 2019

Нами проводилось исследование анатомо-морфологической изменчивости параметров хвои 25 природных популяций Juniperus communis L., произрастающих на территории Европы, Азии и Северной Америки. Исследование показало, что кавказские популяции по всем признакам отличаются от остальных и, вероятно, кавказский можжевельник представляет собой отдельный вид или разновидность. Переходной оказалась популяция из Сочи, которая по ряду параметров близка к альпийским растениям, относящимся к J. communis var.saxatilis. Дальневосточные популяции характеризуются рядом общих черт в строении хвои (длинная, но короткаяхвоя с одной устьичной полосой и крупными смоляными ходами), позволяющих считать их типичной формой J.communis var. saxatilis. Североамериканская популяция по всем изученным признакам не отличается от дальневосточных популяций и, скорее всего, является американской формой J. communis var. saxatilis. Сибирские и европейские популяции составляют единую группу, где у каждой популяции в разной степени проявляются признакикак J. communis var. saxatilis, так и J.communis var.communis. Исключением являются Таллинская и Томская популяции, отличающиеся длинной и узкой хвоей и жизненной формой в виде дерева и, вероятно, являющиеся типичной формой можжевельника обыкновенного – J.communis var.communis. Наиболее информативными признакамидля целей разделения таксонов являются длина и ширина хвои, число полосок и Ка, анатомические признаки оказались менее информативными.
Пути морфологических преобразований жизненных форм у представителей рода Androsace L.
Authors: Любезнова Н. В.
Published: July 2019

В нашей работе были исследованы растения рода Androsace L. разных жизненных форм: однолетние, озимые, двулетние, многолетние дерновинные и растения- подушки. Была изучена схема ветвления всехжизненных форм. Изначальной была признана жизненная форма двулетнего растения. Построены возможныесхемы преобразования от исходной жизненной формы двулетника через озимую к однолетнику и через многолетнюю дерновинную жизненную форму к растению- подушке.
Признаки вегетативных и генеративных органов в систематике рода Galium L. (Rubiaceae Juss.)
Authors: Пинженина Е. А.
Published: July 2019

В связи с таксономической обработкой видов рода Galium L. Азиатской России проведен анализ диагностических признаков. Показано, что признаки вегетативных и генеративных органов являются равноценными для систематики рода Galium.
Инвазионная активность Trifolium pannonicum Jacq. в лесостепи Приобья
Authors: Боголюбова Е. В.
Published: July 2019

Представлены результаты оценки изменения видового состава и продуктивности двух природныхлуговых сообществ – злаково-люцернового и кострецового при семенном возобновлении в них Trifolium pannonicum, средиземноморско-европейского вида, интродуцированного в лесостепь Западной Сибири в качестве кормового высокопродуктивного долголетнего растения, устойчивого к болезням и вредителям. Показано, что при разрастании T. pannonicum урожайность обоих лугов увеличилась в 1,6–2,0 раза и изменилось долевое участие в составе травостоя отдельных видов. На внедрение T. pannonicum отрицательно реагировали такие доминанты луговых сообществ лесостепного Приобья, как Medicago falcatа, рыхлодерновинные злаки – Poa angustifolia, Dactylisglomerata, Festuca pratensis, а также большая часть видов лугового разнотравья. В то же время у длиннокорневищных видов злаков – Bromopsis inermis и Elytrigia repens отмечена положительная реакция на присутствиеT. pannonicum, выраженная в увеличении их продуктивности.
Водоросли озера Харыхколь (Республика Хакасия)
Authors: Макеева Е. Г.
Published: July 2019

В статье представлены данные о видовом составе водорослей оз. Харыхколь, расположенного вКойбальской степи Минусинской котловины. В озере выявлено 127 видов (134 вида, разновидности и формы) водорослей из девяти отделов: Cyanoprokaryota – 19 вида (19 видов, разновидностей и форм), Chrysophyta – 1 (1),Bacillariophyta – 67 (73), Xanthophyta – 3 (3), Cryptophyta – 1 (1), Dinophyta – 1 (1), Euglenophyta – 1 (1), Chlorophyta –26 (27), Streptophyta – 8 (8). Ведущая роль в озере принадлежит диатомовым и зеленым водорослям. Доминирующими видами являются Cladophora glomerata (Linnaeus) Kützing, Ulnaria capitata (Ehrenberg) Compère, U. ulna(Nitzsch) Compère, Cocconeis placentula Ehrenberg.
Онтогенетическая структура ценопопуляции Fragaria viridis Duch. (Rosaceae) на отвале горной породы
Authors: Олефиренко И. О.
Published: July 2019

Впервые для Кемеровской области исследована онтогенетическая структура ценопопуляции F. viridis, произрастающей на отвале горной породы. Она нормальная неполночленная, в ней могли отсутствовать старые растения. На затененном участке фитоценоза произрастали растения более молодого возрастного состояния.Онтогенетический спектр определен как левосторонний, не меняющий своего характера из года в год.
Находки новых адвентивных видов растений в Барнауле (Алтайский край)
Authors: Терехина Т. А. , Овчарова Н. В. , Силантьева М. М.
Published: July 2019

В статье проводится характеристика новых для г. Барнаула адвентивных видов растений. Описываются условия их местообитания. Дается их эколого-биологическая характеристика и указываются причины появления новых адвентов. Рассматривается их распространение в естественном ареале и вторичном. Названо несколько адвентивных видов растений, наиболее обильно встречающихся в синантропных местообитаниях.
Разнообразие листовых параметров у прибрежно-водных растений Монголии
Authors: Ронжина Д. А. , Иванов Л. А. , Иванова Л. А.
Published: July 2019

Изучены функциональные листовые параметры у 15 видов растений ветландов в лесостепной зонеМонголии. Показано, что у прибрежно-водных растений наиболее вариабельными были показатели размера листовой пластинки (длина и площадь листа), наименее вариабельными – содержание сухого вещества (LDMC) иводы (LWC) в листе, промежуточное положение занимали сухой вес единицы площади листа (LMA), толщина иплотность листа. В среднем однодольные виды имели в 3 раза более толстые листья с большей в 11 раз площадью и в 2 раза большим LMA, чем двудольные. Сравнительный анализ листовых параметров у прибрежно-водных растений ветландов и зональных травянистых растений лесостепной зоны, показал, что интразональные изональные растения сходны по толщине листа. В то же время листья прибрежно-водных растений отличались отзональных меньшим LMA вследствие низкого содержания сухого вещества в листе, что связано с развитием аэренхимы у растений ветландов.
Результаты первичной интродукции и особенности развития видов рода Paeonia L. (сем. Paeoniaceae Rudolphi) в Полярно-альпийском ботаническом саду
Authors: Вирачева Л. Л. , Ворсина А. А.
Published: July 2019

В Полярно-альпийском ботаническом саду (67о38’с. ш. и 33o37’ в. д.) испытано 83 образца 17 дикорастущих видов рода Paeonia L. В настоящее время в коллекции содержатся 12 видов (24 образца). В результатепроведенных исследований было установлено, что большинство изученных видов рода Paeonia успевают пройти полный цикл сезонного развития в условиях Заполярья. Ритм сезонного развития видов рода Paeonia зависитот погодных условий и экологических условий произрастания растений в естественных фитоценозах. Изученныевиды рода Paeonia обладают высокой декоративностью в течение всего вегетационного сезона. Все растения зимуют без укрытия, неприхотливы, не требуют специальных приемов культивирования.
ANALYSIS OF THE INFLUENCE OF TRANSDUCER FREQUENCY ON THE ULTRASONIC MEASUREMENT OF CONCRETE HOMOGENEITY
Authors: Kocáb Dalibor , Misák Petr , Jindrová Barbora , Alexa Martin , Vymazal Tomáš
Published: July 2019

The paper analyses the influence of transducer frequency on the determination of concrete homogeneity using the ultrasonic pulse velocity test. Transit time measurements were made on a 590×590mm concrete slab, with 110mm in thickness, in a raster of 5×5 points, which means the slab was tested in 25 places. The tests were made using a Pundit PL-200 ultrasonic tester using transducers set at 54, 82, and 150 kHz. Two types of measurements were performed – spot measurements of the ultrasonic pulse transit time at each point and full area scanning. The paper is concluded by an evaluation of the concrete slab’s homogeneity measured by different transducers and techniques in addition to a statistical analysis of how the results are affected by the transducer frequency.
USING SECONDARY RAW MATERIALS IN LIGHTWEIGHT OPEN-STRUCTURE CONCRETE WITH GOOD UTILITY PROPERTIES
Authors: Sedlmajer Martin , Zach Jiří , Bubeník Jan
Published: July 2019

The paper presents the results of research in lightweight concrete with open structure made using a lightweight porous foam-glass aggregate produced from recycled glass powder. The goal was to develop lightweight concrete. In order to achieve the best possible properties while reducing binder content, the concrete was reinforced with by-product fibres, which helped reduce the weight of the concrete while delivering satisfactory mechanical properties. In the paper are proposed lightweight concrete with open structure made using foam-glass aggregate. Mechanical, thermal-insulating and acoustic properties were determined on lightweight concrete. Designed concrete is only made of crushed lightweight foam-glass aggregate with a combination of Portland cement with the option of adding recycled PET fibres. The new concretes possess a very good ratio of thermal insulation to mechanical properties as well as good sound absorption.
MECHANICAL PROPERTIES IMPROVEMENT OF FIBER REINFORCED CONCRETE
Authors: Trejbal Jan , Nežerka Václav , Hlůžek Radim , Prošek Zdeněk
Published: July 2019

Fiber reinforced concrete mechanical properties are limited due to low adhesion between polymer fibers and cement matrix. To ensure a strong interaction between the two materials, polypropylene fibers (d = 0.305mm) were modified by an oxygen plasma treatment. The interface interaction was moreover activated using finely ground concrete recyclate, whose individual grains (1−64 μm) ensure an adhesion improvement in interfacial zones. The adhesion enhancement was verified by pull-out tests, when reference and modified fibers were pulled-out from cement matrix specimens. Such obtained results were used as a crucial parameter to numerical simulations of bending tests of specimens (550 × 150 × 150mm) with properties following fiber reinforced concrete. It was shown that samples reinforced with modified fibers and contained activating recyclate reached on higher residual bending strength then those with reference fibers.
EXPERIMENTAL STUDIES OF ACCELERATED CHLORIDE TRANSPORT IN CONCRETE
Authors: Zacharda Vojtěch , Němeček Jiří
Published: July 2019

This contribution deals with the efficiency of electromigration of chlorides used as a repair method for reinforced concrete structures. Experimental studies of accelerated chloride transport tests were performed on samples of concrete without chlorides and with admixed sodium chloride during concreting. Two concrete types from Portland cement characterized with normal and low compressive strengths were studied. The electromigration was applied to penetrate chlorides into the chloride-free sample and for extraction of chlorides from the sample. The effectiveness of the chloride extraction process for rehabilitation of reinforced concrete in terms of lowering the chloride concentration in different concrete types and surface concentration was observed. Electrical extraction was found to be effective for lowering of initial chloride concentration by 15-20% after 24 hours. The decrease in surface concentrations was found in the range of 40-50%. The extraction process was found to be feasible and effective for both concrete types.
PHYSICAL-MECHANICAL PROPERTIES AND DURABILITY OF HYDRAULIC LIME-BASED MORTARS WITH NON-TRADITIONAL BIOPOLYMERS
Authors: Žižlavský Tomáš , Vyšvařil Martin , Rovnaníková Pavla
Published: July 2019

The study focuses on the influence of addition of four different biopolymers in various doses (0.1%, 0.5%, and 1%) on the physical-mechanical properties and durability of NHL 3.5 mortars prepared with constant water/binder ratio and the binder/aggregate ratio of 1 : 2 by weight. The flow table test was carried out and the specimens were tested for flexural and compressive strength at the age of 7 and 28 days. The durability coefficient for the flexural strength was calculated after 15 freezing-thawing cycles. All the admixtures have dosage-dependent slump reducing effect. The strengths were increased in comparison with mortar with no admixture, the most significantly in the case of highest dose of carrageenan and diutan gum. All biopolymers with the exception of diutan gum increased the durability coefficient with increasing dosage. Sodium salt of alginic acid has been found the most effective in the case of durability improvement.
IMPACTO DA CONFORMIDADE FINANCEIRA E FISCAL SOBRE O GERENCIAMENTO DE RESULTADOS
Authors: Cappellesso Géssica , Rodrigues Jomar Miranda , Gonçalves Rodrigo de Souza
Published: July 2019

Este estudo teve por objetivo investigar o impacto da conformidade financeira e fiscal (CFF) sobre o gerenciamento de resultados por meio de accruals, levando em consideração países common e code law do Grupo dos Vinte (G-20). Para tal, foram utilizadas 26 nações ao longo de 2006 a 2016, onde se realizou uma análise a nível país e se seguiu três etapas: construção de um índice de gerenciamento de resultados para cada país e ano, desenvolvimento de uma medida de CFF para os países-anos, e associação entre as medidas obtidas. Como resultados, constatou-se uma associação negativa entre o índice de gerenciamento de resultados e o nível de CFF dos países, o que sugere que a maior proximidade entre as normas contábeis e fiscais reduz os incentivos para a manipulação dos números contábeis. Contudo, também foi verificado que essa relação difere entre nações que adotaram ou não as IFRS, sendo observado que, em países que realizaram a convergência, a maior CFF esteve associada a um aumento no índice de gerenciamento de resultados. Portanto, esse resultado demonstra a importância de se considerar os efeitos de variáveis institucionais ao avaliar a relação entre CFF e gerenciamento de resultados.
INTERNACIONALIZAÇÃO E PRÁTICAS DE RESPONSABILIDADE SOCIAL CORPORATIVA EM EMPRESAS BRASILEIRAS
Authors: Soschinski Caroline Keidann , Brandt Elisane , Klann Roberto Carlos
Published: July 2019

A divulgação de práticas socialmente responsáveis tem sido requerida cada vez mais por diversos stakeholders, principalmente em mercados desenvolvidos, como o europeu e o norteamericano, tornando-se uma questão estratégica para diversas empresas brasileiras, principalmente aquelas que atuam no mercado externo. Nesse sentido, esta pesquisa objetivou analisar a influência da internacionalização nas práticas de responsabilidade social corporativa (RSC) em empresas brasileiras. A amostra compreendeu 71 empresas durante os anos de 2007 a 2017. Os dados foram analisados por meio de regressão linear múltipla, modelo tobit, com efeitos fixos de setor e ano. Os resultados apontaram que o nível de internacionalização das empresas se mostrou positivamente relacionado à RSC, mas apenas em sua dimensão social e para empresas não reguladas. De forma geral, conclui-se que a busca por ações de RSC por parte das empresas brasileiras tem relação com sua inserção no mercado internacional, como forma de atender possíveis pressões de stakeholders. Dessa forma, contribui-se com a literatura sobre RSC, principalmente a relacionada aos seus determinantes, por evidenciar que não só preocupações sociais e ambientais sustentam tais práticas, mas que decisões estratégicas relacionadas à inserção no mercado externo também podem influenciar tal comportamento.
DETERMINANTES DA UTILIZAÇÃO DE COVENANTS CONTÁBEIS NAS DEBÊNTURES EMITIDAS PELAS EMPRESAS LISTADAS NA BOLSA BRASIL BALCÃO
Authors: Konraht Jonatan Marlon , Vicente Ernesto Fernando Rodrigues
Published: July 2019

Os covenants contábeis têm como finalidade reduzir potenciais conflitos de agência entre empresa e credores, bem como reduzir o risco relacionado à incerteza quanto à futura capacidade de pagamento da dívida. Os fatores que direcionam o uso dos covenants variam em função do país ou tipo de dívida contratada, podendo afetar tanto a decisão de utilizar (ou não) covenants quanto a quantidade utilizada. Nesse contexto, o objetivo desta pesquisa é identificar fatores determinantes da utilização de covenants contábeis nas debêntures emitidas no Brasil. Este estudo justifica-se pela característica brasileira de baixa proteção aos direitos dos credores, o que tende a aumentar a importância dos covenants como mecanismo complementar de proteção ao capital fornecido. A amostra analisada é composta por 287 debêntures emitidas entre 2010 e 2016 pelas empresas listadas na Bolsa Brasil Balcão. Para a identificação dos determinantes da utilização de covenants contábeis, foram especificados modelos de regressão logística e de Poisson com dados em painel com 10 variáveis testadas, as quais representam: (a) características econômicas e financeiras das empresas; (b) características de governança corporativa, e; (c) característica da dívida. Os resultados indicam que as características da dívida somente afetam a decisão de se utilizar (ou não) covenants contábeis, enquanto as características das empresas (econômicas e governança) afetam tanto a decisão de utilização quanto a quantidade de covenants contábeis utilizada. Como contribuição prática, este estudo mostra que as empresas podem adotar mecanismos substitutos à utilização de covenants contábeis e, assim, evitar as restrições à flexibilidade financeira impostas por eles. Esses mecanismos consistem na emissão de dívidas com prazo mais curto, emissão de dívida com garantia real ou, ainda, o reforço das características internas de governança corporativa.
Integrity of serum samples is changed by modified centrifugation conditions
Authors: Miler Marijana , Nikolac Gabaj Nora , Culej Jelena , Unic Adriana , Vrtaric Alen , Milevoj Kopcinovic Lara
Published: July 2019

Background

Serum samples should be centrifuged for at least 10 min at 1300–2500 × g. Changed centrifugation conditions could compromise sample quality. The objective of this study was to compare the serum quality and turnaround time (TAT) using different centrifugation conditions.

Methods

The study was done in four different periods (A, B, C and D) at different conditions: for 10, 5 and 7 (A, B and C, respectively) at 2876 × g, and 7 (D) min at 4141 × g. Sample quality was assessed as the proportion of samples with: (a) aspiration errors, (b) H index >0.5 g/L and (c) suppressed reports of potassium (K) due to hemolysis. TAT was calculated for emergency samples. The proportions of samples (a), (b) and (c) were compared according to period A.

Results

The number of aspiration errors was significantly higher in samples centrifuged at 2876 × g for 5 min (p = 0.021) and remained unchanged when centrifuged for 7 min (p = 0.066 and 0.177, for periods C and D, respectively). In periods B, C and D, the proportion of samples with hemolysis was higher than that in period A (p-values 0.039, 0.009 and 0.042, respectively). TAT differed between all periods (p < 0.001), with the lowest TAT observed for B and D. The lowest number of samples exceeding 60-min TAT was observed in period D (p = 0.011).

Conclusions

The integrity of serum samples is changed with different centrifugation conditions than those recommended. Our study showed that shorter centrifugation at higher force (7 min at 4141 × g) significantly decreases TAT, with unchanged proportion of samples with aspiration errors.
Benefits for the Implementation of a Business Process Model Approach Inside Organizations
Authors: Danţiş Dragoș
Published: July 2019

Currently organizations have evolved with the development of global economy and transformed from national players into regional or international actors. Decision makers and governing functions have been put in the situation to identify new ways to support their strategy and sustain organizational management. One of the modalities to accomplish these objectives has been to implement a Business Process Model Approach inside the organizations. The document will detail and highlight the benefits for a legal entity once such an approach is put in practice
The influence of bio-fibers from different pulping processes on the pulp-polylactic acid composites (PPCs) properties from sugarcane bagasse
Authors: Allahdady Maryam , Hedjazi Sahab , Jonoobi Mehdi , Abdulkhani Ali , Jamalirad Loya
Published: July 2019

Pulp-polylactic acid composites (PPCs) with monoethanolamine, alkaline sulfite-anthraquinone, unbleached and bleached soda bagasse pulps and polylactic acid (PLA) were successfully fabricated using twin-screw extrusion. The results were compared with bagasse flour-PLA composites (WPCs) as reference. The results indicated that the mechanical strengths of produced composites with pulp fibers were increased compared to the neat PLA and bagasse flour-PLA composites. Monoethanolamine and alkaline sulfite-anthraquinone fibers due to their surface chemical structure had a superior compatibility with PLA compared with other used bio-fibers which has been confirmed by SEM micrographs too. FTIR was used to investigate the effect of different chemical treatments on the bio-fibers. The results of XRD analysis showed that the crystallinity of PPCs was substantially improved by incorporation with pulp fibers compared to WPCs composites. The water absorption of the PPCs is different due to using the diverse bio-fibers. According to DMA analysis, the tan delta was substantially decreased when PLA was reinforced by different bio-fibers. The biodegradation of green composites were characterized and the results showed that the biodegradability of the PLA was increased due to addition of bagasse pulp biofibers.
Kinetics and mechanism of the advanced oxidation process of Cr(III) to Cr(VI) by SO4
−˙ free radicals in slightly acidic simulated atmospheric water
Authors: Djouider Fathi
Published: July 2019

In a previous work, we showed that the oxidation of Cr(III) to Cr(VI) by OH˙ present in the atmospheric water droplets has the potential to threaten the people’s health since non-toxic species is transformed into environmental carcinogens. The same oxidation might be initiated by the SO4
−˙ free radicals. Here, we shed some light on the detailed mechanisms of this oxidation reaction occurring in ambient atmosphere. Steady state irradiation and pulse radiolysis technique were used to generate SO4
−˙. The advanced oxidation process mechanism was investigated at pH 4 and 6 selected as typical values of cloud water acidity. Our findings showed that the oxidation is pseudo-first order with respect to Cr(III) and is pH dependent. In the suggested reaction mechanism, the electron transfer proceeds via an inner sphere mechanism, with formation of the [Cr(III)–SO4
−˙] precursor adduct, followed by an electron transfer inside the adduct, from Cr(III) to SO4
−˙, to form Cr(IV):

Cr(III)
+

SO

4

−
·

⇌
[
C
r
(
III
)
–

SO

4

−
·

]
→
Cr(IV)
+

SO

4

2
−

.

$${\rm{Cr(III)}} + {\rm{S}}{{\rm{O}}_4}^{ - \cdot}[Cr({\rm{III}})-{\rm{S}}{{\rm{O}}_4}^{ -\cdot }] \to {\rm{Cr(IV)}} + {\rm{S}}{{\rm{O}}_4}^{2 - }.$$

At pH 4, the equilibrium constant and the rate constant are 7.52 × 104 M−1 and 2.47 × 104 s−1, respectively. At pH 6 these values become 1.90 × 105 M−1 and 1.41 × 104 s−1, respectively.
Background EEG Connectivity Captures the Time-Course of Epileptogenesis in a Mouse Model of Epilepsy
Authors: Słowiński Piotr , Sheybani Laurent , Michel Christoph M. , Richardson Mark P. , Quairiaux Charles , Terry John R. , Goodfellow Marc
Published: July 2019

Large-scale brain networks are increasingly recognized as important for the generation of seizures in epilepsy. However, how a network evolves from a healthy state through the process of epileptogenesis remains unclear. To address this question, here, we study longitudinal epicranial background EEG recordings (30 electrodes, EEG free from epileptiform activity) of a mouse model of mesial temporal lobe epilepsy. We analyze functional connectivity networks and observe that over the time course of epileptogenesis the networks become increasingly asymmetric. Furthermore, computational modelling reveals that a set of nodes, located outside of the region of initial insult, emerges as particularly important for the network dynamics. These findings are consistent with experimental observations, thus demonstrating that ictogenic mechanisms can be revealed on the EEG, that computational models can be used to monitor unfolding epileptogenesis and that both the primary focus and epileptic network play a role in epileptogenesis.
Strengthening the Multi-Party Presidential Government in Indonesia
Authors: Hamudy Moh. Ilham A. , Rifki M. Saidi
Published: July 2019

The Multi-Party Presidential Government in Indonesia has reached a critical point. The 2.5 percent parliamentary threshold rule in the 2009 Election was incapable to address the issue. The parliamentary threshold was raised to 3.5 percent in 2014, in the hope to reduce the number of party joining the election, but it failed to do so. There were 9 national parties participating in the 2009 election, and it will be increased to 16 in the 2019 election. Theoretically, the combination of multi-party parliament in a Presidential Government is rather strange. It is not surprising that the "conflict" between the president and parliament often occurs. There suppose to be a coalition supporting the government in parliament, but the coalition is not a firm one. The coalition did not have a significant influence in strengthening the presidential government. Therefore, this study intends to provide a complete picture of multi-party system practices while trying to provide solutions for strengthening the presidential government in Indonesia. To achieve this goal, this study uses the literature study method in collecting relevant information, using a qualitative approach. This approach is considered appropriate because multi-party phenomena and presidential systems are multidimensional. In contrast to previous research which was limited to the description and problems of multiparty systems, this research besides describing the system of government also provided moderate solutions that were considered to be in accordance with the Indonesian context. This study assumes that strengthening presidential systems can be done if the political parties are more modest. In addition, parliamentary support for the president must be optimized. The results of the study concluded that the strengthening of presidential systems must be carried out through the purification of the government system contained in the constitution, forming and strengthening the ranks of government coalitions in parliament, and carrying out a number of institutional engineering through various forms. These three things must be wrapped in a constitutional frame (amendments to the 1945 Constitution) and regulations (revisions to laws and government regulations). The amendments and revisions can be done through three corridors, namely the intra-parliamentary movement, the extra-parliamentary movement, and the referendum.
Histone H2B Ubiquitylation Regulates Histone Gene Expression by Suppressing Antisense Transcription in Fission Yeast
Authors: Pagé Viviane , Chen Jennifer J , Durand-Dubief Mickael , Grabowski David , Oya Eriko , Sansô Miriam , Martin Ryan D , Hébert Terence E , Fisher Robert P , Ekwall Karl , Tanny Jason C
Published: July 2019

Histone H2B monoubiquitylation (H2Bub1) is tightly linked to RNA polymerase II transcription elongation, and is also directly implicated in DNA replication and repair. Loss of H2Bub1 is associated with defects in cell cycle progression, but how these are related to its various functions, and the underlying mechanisms involved, is not understood. Here we describe a role for H2Bub1 in the regulation of replication-dependent histone genes in the fission yeast Schizosaccharomyces pombe. H2Bub1 activates histone genes indirectly by suppressing antisense transcription of ams2+—a gene encoding a GATA-type transcription factor that activates histone genes and is required for assembly of centromeric chromatin. Mutants lacking the ubiquitylation site in H2B or the H2B-specific E3 ubiquitin ligase Brl2 had elevated levels of ams2+ antisense transcripts and reduced Ams2 protein levels. These defects were reversed upon inhibition of Cdk9—an ortholog of the kinase component of positive transcription elongation factor b (P-TEFb)—indicating that they likely resulted from aberrant transcription elongation. Reduced Cdk9 activity also partially rescued chromosome segregation phenotypes of H2Bub1 mutants. In a genome-wide analysis, loss of H2Bub1 led to increased antisense transcripts at over 500 protein-coding genes in H2Bub1 mutants; for a subset of these, including several genes involved in chromosome segregation and chromatin assembly, antisense derepression was Cdk9-dependent. Our results highlight antisense suppression as a key feature of cell cycle-dependent gene regulation by H2Bub1, and suggest that aberrant transcription elongation may underlie the effects of H2Bub1 loss on cell cycle progression.
Multivalued generalizations of fixed point results in fuzzy metric spaces
Authors: Došenovic Tatjana , Rakic Dušan , Caric Biljana , Radenovic Stojan
Published: July 2019

This paper attempts to prove fixed and coincidence point results in fuzzy metric space using multivalued mappings. Altering distance function and multivalued strong {bn}-fuzzy contraction are used in order to do that. Presented theorems are generalization of some well known single valued results. Two examples are given to support the theoretical results.
Fixed point results for alpha-implicit contractions with application to integral equations
Authors: Hussain Nawab , Vetro Calogero , Vetro Francesca
Published: July 2019

Recently, Aydi et al. [On fixed point results for α-implicit contractions in quasi-metric spaces and consequences, Nonlinear Anal. Model. Control, 21(1):40–56, 2016] proved some fixed point results involving α-implicit contractive conditions in quasi-b-metric spaces. In this paper we extend and improve these results and derive some new fixed point theorems for implicit contractions in ordered quasi-b-metric spaces. Moreover, some examples and an application to integral equations are given here to illustrate the usability of the obtained results.
Red Neuronal Artificial aplicado para el pronóstico de eventos críticos de PM2.5 en el Valle de Aburra.
Authors: Baena Salazar Daniela
Published: July 2019

Las grandes implicaciones que tiene en la salud humana la exposición a eventos de contaminación atmosférica, puede tener repercusiones en la calidad de vida, economía, y en la calidad de los ecosistemas de una ciudad. Con la posibilidad de prever un evento crítico, se habilita la opción de tomar medidas adecuadas para la mitigación o incluso la prevención dichos impactos. En este documento, se ha desarrollado y se ha probado un modelo de Redes Neuronales Artificiales (RNA) para pronosticar la concentración diaria del material particulado menor a 2.5 micras (PM2.5) en el Valle de Aburrá (Colombia), con un día de anticipación. Esto, a  partir de información de tres estaciones de la Red de Monitoreo de Calidad del Aire del Área Metropolitana.
PCAindustrial: Software libre para diseño de pavimentos industriales de concreto
Authors: Muñoz-Valencia Andrés Fernando , Orobio Armando
Published: July 2019

El método de diseño de la PCA para pavimentos y pisos industriales de concreto es uno de los más conocidos a nivel mundial, pero su aplicación se ha convertido en poco practica por su complejidad y el uso de nomogramas como herramienta de diseño. Debido a esto, se identificó la necesidad de simplificar la aplicación este método de diseño de pavimentos industriales con un software, el cual permitiera evaluar de manera rápida varias alternativas de diseño, con alta precisión y en poco tiempo. Se utilizó la técnica de muestreo hipercubo latino para realizar muestreos de los nomogramas de diseño y construir modelos sustitutos de estos, los cuales posteriormente fueron codificados en el software llamado PCAindustrial.
Clarification of the water of wetlands using a mixture of natural coagulants
Authors: Rianos Katerin , Meza Leones María Carolina , Mercado Martinez Ivan Dario
Published: July 2019

The purpose of this investigation was to evaluate the coagulant power of 5 natural combinations to clarify the water of a wetland. The clarification process was simulated with the jar test and a rapid agitation at 120 rpm was established for this test for 1 minute, slow agitation at 30 rpm for 20 minutes and sedimentation for 15 minutes. For the natural combinations, a ratio of 90-10, 80-20, 70-30, 60-40, and 50-50yucca -seeds of Moringa oleifera was determined. After the process, the turbidity of the water was compared with a control sample. It was determined that the best results were obtained with treatment 2, 4 and 5 that removed the turbidity of the water from the wetland in 89.7%,93.0 and 93.4% and 93.4% respectively.
Diseño geotécnico de pilares en minas subterráneas de vetas auríferas en casos de Colombia
Authors: Castro-Caicedo Alvaro J. , Alejano Leandro R. , Monsalve Oliveros Juan Eugenio , Bernal Montiel Alejandro
Published: July 2019

Se presenta un método empírico-analítico para el diseño de pilares de rocas en la minería subterránea de vetas auríferas en Colombia, que parte de la observación de casos en algunas de las condiciones geológicas de mayor producción en el país y otras experiencias internacionales. La propuesta es centrada en la observación de los mecanismos de ruptura de pilares existentes, en levantamientos de campo, en mecánica de rocas experimental y en análisis estático. La definición del tamaño del pilar se fundamenta en el cumplimiento de requerimientos de estabilidad por evaluación entre la resistencia disponible y los esfuerzos actuantes. El método es expuesto con la intención de facilitar su adopción por parte de la pequeña y mediana minería.
Data decoding of integer orbital angular momentum beams based in straight edge diffraction nanometric film
Authors: Mendoza Castro Jesus Hernan , Diaz Meza Carlos Fernando , Acevedo Cristian Hernando , Torres Moreno Yezid , Barrero Jaime Guillermo
Published: July 2019

The orbital angular momentum revolutionized optical communications, like an OAM beam of light need not be interrupted for the transfer ofdata, provides immunity to electromagnetic interference, allows increase bandwidth, rate and transmission capacity information, making theprocess more efficient. Supported by the ability to encode information on OAM modes of light, is necessary the development of a decoder thatintegrate to hardware systems, solve the problem of current techniques, which main disadvantage is to require the use of additional energysources, increasing the implementation cost, and make it less compact. The purpose of this report is towards modelling an optoelectronicdecoder system which discriminates the orbital angular momentum mode in the beam, associated with transmitted information and translates itfrom the selected transmission channel (i.e. outdoor atmosphere) to a recognizable information. Current methodology proposed for thispurpose, integrates the use of thin films of nanometric order, whose design features allows interaction with OAM beams that, can bedistinguish its topological charge.
The effect of pressure filtration coffee preparation methods (Coffea arabica L. var. Castillo) on antioxidant content and activity, and beverage acceptance
Authors: Ormaza Zapata Angela Maria , Díaz Arango Félix Octavio , Rojano Benjamín Alberto
Published: July 2019

The majority of pressure filtration methods for coffee preparation constitute acceptable alternatives for the obtention of coffee with bitter notes and body. In this study, antioxidant metabolite retention, antioxidant activity, and cup profiles were determined for coffee beverages prepared using five methods of pressure filtration. The methods which registered the highest antioxidant retention rates were Espresso, Moka, and Staresso. The highest hydroxycinnamic acid content was obtained with the Staresso, Espresso, and Moka methods, in descending order. Antioxidant capacity was proportional to antioxidant compound retention, with the ORAC method, in the beverages prepared, but not with the ABTS methodology. The Presso method had the lowest antioxidant retention rate. The beverage prepared with the Aeropress method obtained the lowest amount of antioxidant metabolites. In the five preparations evaluated, the most prominent hydroxycinnamic acid was chlorogenic acid. It is recommended that coffee prepared with the Espresso or Moka methods be consumed.
OntoAgile: an ontology for agile software development processes
Authors: Ortega Ordoñez Wilson Alfredo , Pardo Calvache César Jesús , Pino Correa Francisco José
Published: July 2019

Currently, there is a broad portfolio of agile approaches to software development, however, in many cases their implementation is done informally and without a proper institutionalization of the agile values and principles. Although there are some proposals related to the adoption and assessment of agile approaches, efforts have been made without having a common terminology which has led to confusion and terminological conflict affecting the implementation of these approaches in organizations. This article proposes the ontology called OntoAgile, which aims to suggest a common and consistent terminology that allows sharing the knowledge generated around the implementation of the agile approaches in the software processes in a generic and formal way. Similarly, OntoAgile facilitates the assessment of the agility of the software processes from the identification of the relationships between the elements of the software processes and the agile principles and values. OntoAgile was assessed satisfactorily by three cases of application.
Storage allocation optimization model in a Colombian company
Authors: Zapata-cortes Julian Andres , Arango-Serna Martin Dario , Ballesteros Riveros Frank Alexander , Adarme - Jaimes Wilson
Published: July 2019

The storage allocation in warehouse is about of deciding the corresponding areas in which the products must be allocated. It can be made using different techniques to stablish the specific position for the products. Some applications provide solutions and evaluate results independently, allowing the identification of its potential in warehouses. This paper presents the application of a storage allocation model in a food company considering several products in a defined time horizon. The algorithm identifies the operation area and the corresponding spaces that are required for the products allocation, aimed to reduce holding and material handling costs. As a result, the application of the algorithm produces a complete product allocation in each period and improves the cost efficiency in the warehouse.
La interrelación rural-urbana en espacios de interfase como planteamiento para la cohesión territorial
Authors: Bedoya-Ramos Erika-Jazmin
Published: July 2019

Ante la inquietud por comprender cómo se configuran las relaciones para la cohesión territorial, esta investigación se planteó como objetivo principal realizar una aproximación explicativa sobre el tipo de relación particular entre los medios rural y urbano, especialmente en la actual globalización (apertura o integración) que ha propiciado las condiciones para que los límites y diferencias entre el campo y la ciudad sean más difusos. Partiendo desde allí, en este trabajo se llevó a cabo una identificación, caracterización y explicación de los aspectos y factores que emergen de las conexiones de frontera rural-urbano entre el municipio de La Virginia y su contexto regional. Este municipio localizado hacia el centro occidente de Colombia en el departamento de Risaralda, cuenta con particularidades que han favorecido la ocurrencia de unas dinámicas de transformación del espacio, economías y prácticas sociales relacionados con la existencia de actividades, extra-agrarias y sus consecuencias territoriales.
Editorial
Authors: Toro Javier
Published: July 2019

Estamos, de manera equivocada, acostumbrándonos a los desastres de origen antrópico, con argumentos que van desde causas naturales hasta predicciones que hacían imposible prevenir los efectos nefastos hacia las comunidades y los ecosistemas. No obstante, gran parte de estos eventos catastróficos pueden ser evitados, sí se toman decisiones fundamentadas en la sustentabilidad de los territorios, teniendo en cuenta las vulnerabilidades, la resiliencia, las expectativas y necesidades de la población local y la base físico-biótica.
The Concept of Freedom in The Holy Quran (A Thematic Study)
Authors: Meftah Jilani Ben Touhami
Published: July 2019

This paper deliberates with the concept of freedom in the Holy Quran by analyzing the concept and highlighting its theoretical and applied features. This paper is divided into an introduction and three sections: The first part deals with the principle of freedom and its status in the Qur’an, it was found that freedom is a human nature and its codification and being under human responsibility had begun since man was selected as a vicegerent (Khalifah) in the earth. The second part deals with the freedom in its practical aspect by explaining some Quranic stories, which is considered good practical examples for freedom especially in its intellectual facet. It also explains the influence of Quranic meaning of freedom on the attitude of people and the role that it can play in the civilizational progress. The third part summaries of the paper: Freedom as comprehensive concept is a Quranic objective. Freedom is a prerequisite for man to carry his duty as the boss of Universe (Khalifah). Freedom is a requirement for any social contract and for any civilizational progression. The methodology used in this paper is the methodology of analysis and synthesis.
Santri's Economic Empowerment Model in Pesantren Al-Ittifaq Ciwidey District of Bandung
Authors: Syaprudin Arip
Published: July 2019

Pesantren is a live episode that combines various life skills, not least agriculture. Various activities of life in pesantren have encouraged the sense of ideology of Santri. Educational activities that essentially the learning process requires thinking as a strong foundation so that the implementation of education that becomes the duty of his duties performed with a solid and really can be accounted for. This research uses descriptive qualitative, research place at Pesantren Al-Ittifaq Ciwidey district of Bandung. The subject of this research is Santri in pesantren while the informant is the Kiai or Ustādh. Data collection techniques use observation, interview, and documentation. I am checking the validity of the data using triangulation. Data analysis uses data reduction, data presentation, and conclusion. Based on the result of the research, it can be concluded that the model of empowering students at Pesantren Al-Ittifaq that is by the establishment of Core Management Unit Agribusiness, - effective practice in the field, establishing the Agribusiness Incubator Center, cooperating with various institutions and institutions, forming Santri agribusiness groups.
Sharia Arbitration as an Alternative Settlement of Sharia Banking Disputes
Authors: Kholid Muhamad
Published: July 2019

The enactment of Law Number 10 of 1998 concerning Amendments to Law Number 7 of 1992 concerning Banking, became an explicit formal juridical basis for the implementation of the Islamic banking system in Indonesia. These developments should be accompanied by anticipatory steps regarding the problem of settling the dispute. Law Number 30 of 1999 concerning Arbitration and APS (Alternative Dispute Settlement) responds to existing deficiencies by preparing dispute resolution institutions through arbitration. The type of arbitration authorized to settle Islamic banking in Indonesia is Sharia Arbitration so that Sharia Arbitration is the main choice for Sharia Banking business actors. This article will discuss the authority and effectiveness of Sharia Arbitration decisions in resolving Islamic banking disputes in Indonesia. The method used is normative juridical. The study was conducted with 2 (two) stages, namely: library research (library research) and field research (field research). Data collection is done by document study and interview. Data Analysis Method used is descriptive analytical with qualitative normative juridical approach. The results of the study concluded that Sharia Arbitration competencies can resolve sharia banking disputes which are part of the Islamic economy coupled with disputes which according to the law can be held peace.
Strategy and Management of Preaching (Da’wah) Development of Indonesian Islamic Da'wah Institute Since 1990 Until 2017
Authors: Umam Hoerul
Published: July 2019

The Indonesian Islamic Da'wah Institute (LDII) is connoted as the successor of the Islamic struggle of the Jamaah, so that a false labeling emerges by certain parties. Although there are many indications that direct such perceptions, LDII is essentially an organization formed by the New Order government that is tasked with fixing the deviations of Islamic teachings by the Islamic Jamaah group. From 1990 to 2017. The strategy and management of the development of the propaganda of the Indonesian Islamic Propagation Institute from 1990 to 2017 further enhances religious understanding of its members. Although the number of worshipers can increase but that is the focus of his preaching on the improvement of religious understanding. In carrying out its religious activities, members or worshipers do not have to be fixated on their place of residence. But LDII members can attend the study at the LDII mosque on the spot. Management in this LDII Organization in carrying out its Islamic da'wah is accompanied by plans, work programs and evaluation of the activity process. And it is personal by inviting the closest Muslim community such as relatives, neighbors to participate in its activities. LDII uses strategies in the fields of religion, sports and others to develop its Islamic da'wah.