bluuebunny/crossref_metadata_2025 huggingface dataset:
In Vitro Antioxidant and Bactericidal Efficacy of 15 Common Spices: Novel Therapeutics for Urinary Tract Infections?
Authors: Mickymaray Suresh , Al Aboody Mohammed Saleh
Published: June 2019

Background and Objectives: Bacterial urinary tract infection (UTI) is the most common ailment affecting all age groups in males and females. The commercial antibiotics usage augments antibiotics resistance and creates higher recurrence rates of such communal infections. Hence, this study is aimed at investigating the antibacterial and antioxidant potentials of 15 common spices against 11 UTI-causing bacterial pathogens. Materials and Methods: The antioxidant potential of the methanolic extracts was analyzed as contents of total phenols and flavonoids; radical scavenging, total reducing power, the ferric reducing power assay. Urinary pathogens were subjected to spice extracts to investigate antibacterial assays. Results: Preliminary phytochemical study of spices was performed to find those containing alkaloids, flavonoids, phenolic compounds, and steroids that can be recognized for their noteworthy bactericidal effects. The outcome of the antioxidative potential from the four methods demonstrated the sequence of potent antioxidant activity: Acorus calamus > Alpinia galanga > Armoracia rusticana > Capparis spinosa > Aframomum melegueta. The total polyphenols and flavonoids in the studied species positively correlated with their antioxidant properties. The four most effective spices (A. calamus, A. galanga, A. rusticana, and C. spinosa) had a zone of inhibition of at least 22 mm. A. calamus, A. melegueta, and C. spinosa had the lowest minimum inhibitory concentration (MIC) value against Enterobacter aerogenes, Staphylococcus aureus and Proteus mirabilis. All 15 spices had the lowest minimum bactericidal concentration (MBC) value against most of the pathogenic bacteria. Conclusion: The four highly potent and unique spices noted for the in vitro control of UTI-causing pathogens could be pursued further in the development of complementary and alternative medicine against UTI-causing pathogens.
Mathematical Modelling of the Initial Mold Filling with Utilization of an Angled Runner
Authors: Yin Jun , Ersson Mikael , Mao Huahai , Jönsson Pär G.
Published: June 2019

The flow pattern plays a crucial role in the uphill teeming process. The non-metallic inclusion generation due to interaction with the mold flux is believed to be influenced by the flow pattern. In this study, a three-dimensional mathematical model of the filling of a gating system for 10, 20, and 30 degrees angled runners was used to predict the fluid flow characteristics. Moreover, a mathematical model with a horizontal runner was applied as a reference. The predictions indicate that the angled-runner-design decreases the hump height during the initial filling stage, which results in less entrapment of mold flux into the mold. Nevertheless, increasing the angle of runner can result in a lower hump height, while the 30 degree angled runner gives a much more stable increase of the hump height during the initial filling stage. Besides CFD calculations, some thermodynamic calculations are taken into account for the chemical reactions between liquid steel and gas. The results show that the bubble shrinks due to the fact that N and O are dissolved into steel. The present findings strongly suggest that changing the horizontal runner to an angled runner would be an effective means of reducing flow unevenness during the initial filling of ingots, if the added steel losses are deemed acceptable.
Methanol Extract of Aerial Parts of Pavetta indica L. Enhances the Cytotoxic Effect of Doxorubicin and Induces Radiation Sensitization in MDA-MB-231 Triple-Negative Breast Cancer Cells
Authors: Thi-Kim Nguyen Yen , Moon Jeong Yong , Ryu Ji-yeon , Eum Sangmi , Bach Tran The , Cho Somi Kim
Published: June 2019

Pavetta indica L. is used in traditional medicine for the treatment of various diseases including hemorrhoids, headache, urinary conditions, ulcerated nose, and dropsy. However, no study has evaluated the anticancer effect of P. indica L. In this study, we found that a methanol extract of the leaves and branches of P. indica L. (MEPI) caused cell-cycle arrest at the sub-G1 phase and induced apoptosis, as indicated by the activation of caspase-8, -3, -7, and c-PARP. Western blotting revealed that MEPI significantly reduced the levels of markers of the epithelial-mesenchymal transition, such as Vimentin, Snail, Slug, and matrix metallopeptidase 9. Notably, the expression of multidrug resistance-associated protein 1 in triple negative breast cancer (TNBC) was significantly decreased by MEPI. Moreover, the co-treatment with MEPI and doxorubicin resulted in a synergistic reduction in cell viability. MEPI also induced radiation sensitization of TNBC cells. Gas chromatography-mass spectrometry analysis revealed that 5,6-dehydrokawain (DK) is the major constituent of MEPI. Interestingly, DK exerted significant anti-invasive and anti-metastatic effects. Our results provide a strong rationale for investigating the molecular mechanisms of action of MEPI in TNBC.
The Perspectives of Patients and Health Professionals Regarding the Tuberculosis Control Programme in Recife, Brazil: A Contribution to Evaluation
Authors: Bezerra Simone Santos , Guerreiro Mara Pereira , Pessoa Nathany França , Silva Maria Gabriela Pereira da , Barros Mirela Galvão de , Gomes João José Ferreira , Athayde Maria Paula , Auad Rodrigo Zeymer , Soares Sobrinho José Lamartine
Published: June 2019

The study objective is to describe patients and professionals’ perspectives on the Tuberculosis Control Program (PCT) in Recife, Brazil, contributing to the program evaluation. A cross-sectional study was conducted in three purposively selected sites, representing the three levels of care in the public health system. All eligible PCT patients in sites A, B and C were invited to participate (n = 123). Physicians, nurses, pharmacists and community health agents providing care to PCT patients in these sites, plus their managers, were purposively selected. Data were collected by means of interviews with 44 patients and a questionnaire to 24 professionals. Instruments encompassed previously published items to capture stakeholders’ perspectives (16 and 12 closed-questions, respectively), grouped into categories. The overall evaluation by patients was unsatisfactory (median score 35%; third quartile below 50%; interquartile range 21.9%). Analysis of scores by categories showed that opinions about organizational accessibility were significantly worse than about economic and geographical accessibility, taken together. Overall the median score attributed by professionals was 52% (third quartile below 65%). Professionals had significantly worse opinions about diagnosis, clinical and laboratory assistance. Patients and professionals’ perspectives highlight potential opportunities for improvement. Our findings can be used by managers as a starting point for shared decision-making, potentially contributing to a better performance of the PCT in Recife and, consequently, reducing the risk posed by tuberculosis.
What Might a Theory of Causation Do for Sport?
Authors: Knott Evan Thomas
Published: June 2019

The purpose of this research is to articulate how a theory of causation might be serviceable to a theory of sport. This article makes conceptual links between Bernard Suits’ theory of game-playing, causation, and theories of causation. It justifies theories of causation while drawing on connections between sport and counterfactuals. It articulates the value of theories of causation while emphasizing possible limitations. A singularist theory of causation is found to be more broadly serviceable with particular regard to its analysis of sports.
The Influence of UV-Accelerated Aging Process on Industrial Waste Containing EPDM
Authors: Zanchet Aline , Masiero Alexandra , de Sousa Fabiula Danielli Bastos , Brandalise Rosmary Nichele
Published: June 2019

One of the most efficient ways to recycle elastomeric residues from industrial processes is to incorporate them into compositions. The study of these new compositions is interesting in terms of reducing cost, the consumption of raw materials, and the generation of new waste, working towards sustainable development. Thus, this research aimed to produce and characterize elastomeric blends containing one phase comprised of ethylene–propylene–diene monomer rubber (EPDM) industrial waste aged by the action of ultraviolet radiation (UV) in a UV chamber, and the other comprised of raw EPDM, containing different concentrations of residue. Therefore, the mechanical properties and the vulcanization characteristics of the blends containing different concentrations of EPDM residue—aged and un-aged—were analyzed and compared to the properties of a standard formulation (Control). The results showed that the aging of the waste for a period of 156 h did not trigger a severe degradation process. Additionally, its reuse into new compositions promoted improvements of the studied mechanical properties without compromising the vulcanization characteristics due to the higher molecular stiffness of the samples.
End of Life Tires as a Possible Source of Toxic Substances Emission in the Process of Combustion
Authors: Glushankova Irina , Ketov Aleksandr , Krasnovskikh Marina , Rudakova Larisa , Vaisman Iakov
Published: June 2019

Several million tons of end of life tires (ELTs) are piled annually as a result of human activities. Various methods have been proposed for the extraction and recycling of the resource potential of ELTs. The chemical composition of ELTs seems to enable their usage as a fuel after mechanical separation of a steel cord. Indeed, in the rubber of ELTs, up to 90 mass% accounts for carbon and hydrogen. Currently, it is by incineration that a significant proportion of ELTs is utilized. However, ELTs contain not only sulfur, which is used for vulcanization, but also nitrogen-containing additives. The behavior of these heteroatoms during oxidation is poorly investigated. It has been shown that the pyrolysis liquid fuel obtained from ELTs contains such sulfur compounds as mercaptans and nitrogen in the form of hydrocyanic acid and cyanogen. Deep oxidation of ELTs results in the oxidation of sulfur compounds to dioxide, but the oxidation products have been found to contain traces of cyanogen. Taking this into account, one should pay attention to the ways of transforming heteroatoms during the process of ELT oxidation and the products of ELT pyrolysis as potential sources of highly toxic gas emissions.
Sustainable Extraction and Characterisation of Bioactive Compounds from Horse Chestnut Seed Coats for the Development of Bio-Based Additives
Authors: Havelt Thomas , Brettschneider Sarah , Do Xuan Tung , Korte Imke , Kreyenschmidt Judith , Schmitz Michaela
Published: June 2019

Background: To protect renewable packaging materials against autoxidation and decomposition when substituting harmful synthetic stabilizers with bioactive and bio-based compounds, extracts from Aesculus hippocastanum L. seeds were evaluated. The study objectives were to determine the antioxidant efficacy of bioactive compounds in horse chestnut seeds with regard to different seed fractions, improve their extraction, and to evaluate waste reuse. Methods: Different extraction techniques for field samples were evaluated and compared with extracts of industrial waste samples based on total phenolic content and total antioxidant capacity (2,2’-azino-bis(3-ethylbenzthiazoline-6-sulphonic acid) (ABTS)). The molecular weight distribution and absorbance in ultraviolet range (UV) of seed coat extracts were determined, and the possibility of extracts containing proanthocyanidins was examined. Results: Seed coat extracts show a remarkable antioxidant activity and a high UV absorbance. Passive extractions are efficient and much less laborious. Applying waste product seed coats leads to a reduced antioxidant activity, total phenolic content, and UV absorbance compared to the field sample counterparts. In contrast to peeled seed extracts, all seed coat extracts contain proanthocyanidins. Discussion: Seed coats are a potential source of bioactive compounds, particularly regarding sustainable production and waste reuse. With minimum effort, highly bioactive extracts with high potential as additives can be prepared.
Monitoring the Variation of Vegetation Water Content with Machine Learning Methods: Point–Surface Fusion of MODIS Products and GNSS-IR Observations
Authors: Yuan Qiangqiang , Li Shuwen , Yue Linwei , Li Tongwen , Shen Huanfeng , Zhang Liangpei
Published: June 2019

Vegetation water content (VWC) is recognized as an important parameter in vegetation growth studies, natural disasters such as forest fires, and drought prediction. Recently, the Global Navigation Satellite System Interferometric Reflectometry (GNSS-IR) has emerged as an important technique for monitoring vegetation information. The normalized microwave reflection index (NMRI) was developed to reflect the change of VWC based on this fact. However, NMRI uses local site-based data, and the sparse distribution hinders the application of NMRI. In this study, we obtained a 500 m spatially continuous NMRI product by integrating GNSS-IR site data with other VWC-related products using the point–surface fusion technique. The auxiliary data in the fusion process include the normalized difference vegetation index (NDVI), gross primary productivity (GPP), and precipitation. Meanwhile, the fusion performance of three machine learning methods, i.e., the back-propagation neural network (BPNN), generalized regression neural network (GRNN), and random forest (RF) are compared and analyzed. The machine learning methods achieve satisfactory results, with cross-validation R values of 0.71–0.83 and RMSEs of 0.025–0.037. The results show a clear improvement over the traditional multiple linear regression method, which achieves R (RMSE) values of only about 0.4 (0.045). It indicates that the machine learning methods can better learn the complex nonlinear relationship between NMRI and the input VWC-related index. Among the machine learning methods, the RF model obtained the best results. Long time-series NMRI images with a 500 m spatial resolution in the western part of the continental U.S. were then obtained. The results show that the spatial distribution of the NMRI product is consistent with a drought situation from 2012 to 2014 in the U.S., which verifies the feasibility of analyzing and predicting drought times and distribution ranges by using the 500 m fusion product.
Combining and Balancing Work and Study on the Eastern Border of Europe
Authors: Pusztai Gabriella , Kocsis Zsófia
Published: June 2019

There is a vast amount of research in many countries on what motivates full-time students to enter the labor market, and how this affects their future employment, but these phenomena are hardly ever examined from the perspective of university faculties or student job centers, i.e., the other two parties involved. The novelty of this research is that we took into account students’, faculty members’ and student job centers’ perspectives. This article reports on a study that investigated the social and organizational factors of student employment in Hungary. Fieldwork in 16 student job centers and a content analysis of 23 interviews with students and 7 interviews with faculty members were conducted. The qualitative data collected provides detailed information on how students find jobs and combine work with study. According to student perceptions, term-time work contributes to their employability. This study has also identified factors that might lead to an increased dropout rate. Furthermore, research results suggest that the conservative structure of higher education is incapable of reacting to new social challenges.
Erosion Induced Heterogeneity of Soil Organic Matter in Catenae from the Baltic Sea Catchment
Authors: Jandl Gerald , Baum Christel , Heckrath Goswin , Greve Mogens H. , Kanal Arno , Mander Ülo , Maliszewska-Kordybach Barbara , Niedzwiecki Jacek , Eckhardt Kai-Uwe , Leinweber Peter
Published: June 2019

Soil organic matter (SOM) is unevenly distributed in arable fields in undulated landscapes, but the chemical composition resulting from their turnover, transport and deposition processes is insufficiently known. Therefore, we aimed at disclosing the molecular-chemical composition of SOM in four different catenae at shoulderslope, backslope and footslope positions in arable fields in the Baltic Sea catchment, Europe. The backslope positions always had the lowest organic C-contents (Corg) (1.6…11.8 g·kg−1) and C-stocks (3.8…8.5 kg·m−2) compared to the shoulderslopes and footslopes (1.7…17.7 g·Corg·kg−1, 5.4…15 kg·Corg·m−2). In the SOM-poor backslope positions, the organic matter was characterized by relatively high proportions of carbohydrates, phenols + lignin monomers, alkylaromatic compounds, N-compounds and amides, indicating intensive microbial decomposition. By contrast, the footslopes had the largest Corg-contents (9.3…16.5 g·kg−1) and C-stocks (8.9…15 kg·m−2) in the catenae and particular enrichments in lipids, lignin dimers, sterols and free fatty acids. These relatively stabile SOM compound classes are interpreted as leftovers from erosive downslope transport and concurrent microbial decomposition, e.g., they are pronounced at backslope positions, followed by restricted microbial decomposition. This heterogeneous SOM distribution calls for an adapted soil management that reduces erosion and places amendments to field areas, such as the shoulderslope and backslope.
H-1 Parvovirus as a Cancer-Killing Agent: Past, Present, and Future
Authors: Bretscher Clemens , Marchini Antonio
Published: June 2019

The rat protoparvovirus H-1PV is nonpathogenic in humans, replicates preferentially in cancer cells, and has natural oncolytic and oncosuppressive activities. The virus is able to kill cancer cells by activating several cell death pathways. H-1PV-mediated cancer cell death is often immunogenic and triggers anticancer immune responses. The safety and tolerability of H-1PV treatment has been demonstrated in early clinical studies in glioma and pancreatic carcinoma patients. Virus treatment was associated with surrogate signs of efficacy including immune conversion of tumor microenvironment, effective virus distribution into the tumor bed even after systemic administration, and improved patient overall survival compared with historical control. However, monotherapeutic use of the virus was unable to eradicate tumors. Thus, further studies are needed to improve H-1PV’s anticancer profile. In this review, we describe H-1PV’s anticancer properties and discuss recent efforts to improve the efficacy of H-1PV and, thereby, the clinical outcome of H-1PV-based therapies.
O Ethos da Mulher V: Consumo e construção da identidade feminina na Igreja Universal
Authors: Bronsztein Karla Patriota , Rodrihues Emanuelle Brandão
Published: June 2019

Este trabalho promove uma análise sobre a emergência de um ethos que se mostra como o alicerce da identidade feminina desejável dentro da Igreja Universal do Reino de Deus - IURD. Como objeto de análise, selecionamos um programa televisivo (The Love School) que se transformou numa poderosa marca de produtos e serviços da igreja e uma apresentadora (Cristiane Cardoso) que corporifica, pelo espírito empreendedor de seus discursos midiáticos de sucesso e felicidade, como a identidade da mulher ideal (por ela chamada de Mulher V) está relacionada ao consumo simbólico de produtos e serviços ligados à Igreja Universal.
Dos livros às telas : Harry Potter como uma história transmídia
Authors: Gruszynski Ana Cláudia , Sanseverino Gabriela
Published: June 2019

O artigo identifica e avalia elementos da história de Harry Potter, originada na série de livros de J.K. Rowling, que a transformaram em uma narrativa transmídia. Através da pesquisa bibliográfica, estabelecemos o conceito narrativa de transmídia a partir de Jenkins (2009a), como uma forma complexa de contar histórias e consideramos como este se relaciona com os conceitos de convergência e remediação. Percebemos que o mundo mágico de Rowling se torna um extenso universo ficcional em múltiplas plataformas, com cada novo texto contribuindo de forma diferente e relevante para o todo. Entendemos que a criação do site Pottermore demarcou a transmidialidade da série. Concluímos que, a partir do livro impresso como suporte midiático, estratégias de migração digital foram incorporadas à narrativa, acionando novos recursos e estratégias para sua apresentação.
A disputa eleitoral no ciberespaço: uma análise das estratégias dos candidatos a deputado federal nas fanpages
Authors: Oliveira Luiz Ademir de , Figueira Leal Paulo Roberto , Silva Pereira Carolina Lima
Published: June 2019

A partir da discussão sobre a esfera pública, da perspectiva crítica à concepção deliberativa, discute-se a interface entre a Comunicação e a Política, com foco nos processos eleitorais (Habermas, 1984; Assmann, 2013; Benkler, 2006). As eleições mais recentes no Brasil, mais especificamente as de 2012 e 2014, demarcaram uma mudança em termos de propaganda política, com o uso mais recorrente da internet e, principalmente, das redes sociais. Os candidatos utilizam as redes sociais para construção de uma imagem positiva, na busca de consolidar accountability político, com o intuito de conquistar eleitores, influenciar opiniões e gerar maior identificação com suas campanhas. Nesse contexto, o artigo procura compreender o uso da rede social Facebook a partir da análise das fanpages de três candidatos a deputado federal nas eleições de 2014, Margarida Salomão (PT), Marcus Pestana (PSDB) e Júlio Delgado (PSB), que têm domicílio eleitoral em Juiz de Fora (MG).  As redes sociais também implicam em relações de sentido construídas a partir de interações entre cidadãos e candidatos nestas fanpages. Por isso, num segundo momento, a análise concentra-se na investigação do processo de discussão política nas redes.
Jornalismo cultural em tempos de cultura nas redes, interatividade e pós-cultura
Authors: Stangl Andre Figueiredo
Published: June 2019

Nos últimos anos, com o crescimento das redes sociais, surgiram novos caminhos para a difusão, criação e reflexão sobre cultura. Esse é atualmente um dos grandes dilemas do jornalismo cultural: como usar as redes para falar de cultura sem submergir à sua nova lógica pós-canônica e pós-cultural. Já que, nesse contexto, se explicitam as diferenças entre a forma tradicional de difusão cultural e as novas formas da cultura nas redes.
A potência da alteridade nas mídias digitais: uma perspectiva de identidade e diferença
Authors: Martino Luis Mauro Sa
Published: June 2019

Este ensaio delineia criticamente alguns aspectos das interações nas mídias digitais a partir dos estudos de identidade. A partir de pesquisa prévia, o texto sugere que a relação com a alteridade, nas mídias digitais, residem sobre um paradoxo: o excesso de informações, longe da transparência, resulta na opacidade do outro, em uma apreensão metonímica do outro. O argumento se desenvolve em três etapas: (1) as questões relacionadas à enunciação de si e do outro; (2) A ilusão na qual informações online sobre alguém são tomadas como “conhecimento” sobre o outro; (3) o anonimato como dispositivo de controle e de anti-comunicação. Busca-se, com isso, delinear algumas enunciações online que raramente avançam para além de uma impressão primeira sobre a alteridade.
O método de Benjamin Constant de Rebecque para o estudo do fenômeno religioso em De la religion / O Método de Benjamin Constant de Rebecque para o Estudo do Fenômeno Religioso em De la Religion
Authors: Barroso Marco Antonio
Published: June 2019

RESUMOA hermenêutica apresentada por Constant de Rebecque consistiria em se arriscar no terreno da teologia do seu tempo em lugar de formular uma estrutura argumentativa puramente histórica para a descrição do fenômeno religioso. As finalidades da pesquisa de Constant em De la religion são: 1) escrever uma obra sobre as religiões em geral e, em especial, sobre as religiões antigas, para analisar o que é o fato religioso em suas manifestações (históricas, sociológicas e políticas); 2) descrever o que é o sentimento religioso em sua essência. Neste segundo caso trata-se, pois, de demonstrar que a religiosidade, ou o sentimento religioso, é um dos fundamentos da individualidade. Para o nosso autor este sentimento, enquanto disposição humana, sempre ativa, perfectível e percebida de forma individual, serve como referência para o que é a “verdadeira religião” e também para liberdade.Palavras-chave: Constant de Rebecque, sentimento religioso, método.ABSTRACTThe hermeneutics presented by Constant de Rebecque would consist in venturing into the field of theology in his time instead of formulating a purely historical argumentative structure for describing religion´s social phenomenon. Constant´s research goals in De la religion are: 1) write a piece about religions in general, and in particular, about the ancient religions, to analyze what is the religious fact in its manifestations (historical, sociological and political); 2) describe what is the religious sentiment in its essence. In the latter case, it is therefore to demonstrate that religiosity, or the religious sentiment, is one of the cornerstones of individuality. For our author this sentiment, as human disposition, always active, perfectible and perceived individually, serves as a reference for what is the “true religion” and for freedom.Keywords: Constant Rebecque, religious sentiment, method.
A produção do conhecimento soteriológico na Índia antiga
Authors: Andrade Clodomir Barros de
Published: June 2019

RESUMOO presente artigo objetiva oferecer algumas reflexões acerca da produção do conhecimento soteriológico na Índia antiga. Para tanto, o texto é dividido em três partes. Num primeiro momento, se oferecem algumas explicações acerca do papel do mestre (guru/acārya), figura central da produção e difusão do conhecimento soteriológico na Índia antiga; posteriormente são analisados alguns contextos culturais daquela tradição através dos textos centrados na produção daquele saber; finalmente, destacam-se os pré-requisitos para se embarcar naquele projetosoteriológico.Palavras-chave: Soteriologia indiana antiga; produção de conhecimento na Índiaantiga; Upanisads; guru; pré-requisitos.ABSTRACTThis paper aims at being an attempt to offer some reflections on the production of the soteriological knowledge in ancient India, being, hence, divided into three parts. First, some explanations on the role of the master (guru/acārya), the centerpoint of that soteriological tradition, are offered; than one moves to look intosome texts to try to understand the cultural contexts wherein the said tradition is produced; finally, some pre-requisites to embark upon the said soteriological project are highlighted.Keywords: ancient Indian soteriology; production ofknowledge in ancientIndia; Upanisads; guru; pre-requisites.
Heidegger idólatra: a onto-teo-logia invertida do pensamento heideggeriano segundo Jean-Luc Marion
Authors: Cabral Alexandre Marques
Published: June 2019

O presente artigo possui como objetivo principal caracterizar o pensamento heideggeriano tardio como onto-teo-lógico e idolátrico. Servir-nos-emos, portanto, da obra do fenomenólogo francês Jean-Luc Marionoperacionalizando os conceitos de ídolo e ícone presentes, sobretudo, nas obras Deus sem o ser e O ídolo e a distância, além de explicitar o modo como ele compreende o conceito heideggeriano de onto-teo-logia, presente, além de em Deus sem o ser, em O visível e o revelado. Apesar de Heidegger ter criado o conceito de onto-teologia a fim de caracterizar todas as configurações históricas da metafísica, e ainda que tenha assinalado que o Deus da onto-teo-logia apresenta-se como “causa sui” e fundamento último dos entes, ele inverte, mas não perverte a onto-teo-logia
Analyzing the Efficiency of Dairy Farms by Using the Method of Data Envelopment Analysis (DEA)
Authors: Tímea Gál  , Gábor Grasselli  , István Komlósi
Published: June 2019

In Hungary the dairy sector is in a long-term critical period, the stock has been in constant decline. The consumption of milk and dairy products in Hungary is slightly rising compared to the world tendency, and it is fallen behind the level in 1990. The milk consumption per capita in 2006 was with 75 liters less than the EU-15 average. Dairy enterprise is a very risky activity: the profitability of the enterprise is affected by the fluctuation of feed and animal health products prices from the side of inputs, and by the fluctuation of end-product prices. Under these circumstances it is vital for thecattle breeders, in order to survive, to harness the reserves in the breeding as effectively as possible. In our research we made a multi-faceted efficiency analysis of an agricultural holding’s three dairy farms. The chosen method for the analysis was Data Envelopment Analysis (DEA). Theselection of the method is justified by the fact that there is not such a reliable database by which we could define production functions, and that DEA makes possible to manage several inputs and outputs, i.e. multiple decision problems, simultaneously. By using DEA the sources that causes shortfalls can be identified, analyzed and quantified on farms that does not operate efficiently, thus it can help the corporate decision support successfully. In the model inputs are the cost data per one liter milk – feed, medicinal product use, logistic costs -, and the main parametersconcerning the keeping and rearing. Outputs are indicators concerning milk production, milk quality and others. We prepared the model in MS Excel, the linear programming model series were programmed by Visual Basic. After solving the model, in light of the shadow prices we can determine why either of the farms is not efficient.
Complex appreciation of agrotechnikal factors of sweet corn (Zea Mays L. convar. saccharata Koern.)
Authors: Ádám Lente
Published: June 2019

Three agrotechnical factors (sowing time, fertilization, plant density) and the effect of two different genotypes on the yields of sweet corn was studied, in the dry and warm crop-year of 2009 on a chernozem soil in the County of Hajdúság. The experiments were carried out on the Látókép Research Station of Debrecen University. The experiment involved two sowing times (21 of April and 19 of May), six fertilizer levels (control, N30+PK, N60+PK, N90+PK, N120+PK, N150+PK) and two genotypes (Jumbo, Enterprise). Four plant density levels, 45 thousand ha-1, 55 thousand ha-1, 65 thousand ha-1 and 75 thousand ha-1 were used. In the early sowing time the highest yield was obtained with 65 thousand ha-1 plant density level and N120+PK treatment of Jumbo (18169 kg ha-1), while the maximum yield of Enterprise was 17818 kg ha-1 with 75 thousand ha-1 plant density level and N90+PK dose. In case of the late sowing time both hybrids gave the highest yield with 75 thousand ha-1 plant density level and N30 +PKtreatment, with a crop yield of 13143 kg ha-1 (Jumbo) and 14324 kg ha-1, ( Enterprise).
The influence of fraction size on the chemical composition of winter wheat flour
Authors: Zsuzsanna Tarján  , Ágnes P. Barancsi  , Zoltán Mezei
Published: June 2019

Wheat is one of the most important cereals in the world and the bread made of its flour belongs to the everyday life of human  mankind.The Hungarian standard relating to the laboratory production of wheat flour (MSZ 6367/9-1989) does not mention the type of laboratory mill used for milling, and it only builds up some general criteria, such as: the laboratory mill should be provided  with four differently nicked barrels, a sieve with appropriate hole sizes, and also with the separated collections of the pilot flour and the bran. Our study was started at this point and the answers for the following questions were aimed to be found: do the flour patterns studied and produced with different sieving techniques, widely used in laboratory mills of the same wheat pattern show any alterations after the impact of the formula production as regards chemical constitutions. Various flours of the wheat pattern sieved with different particle sizes were studied in this experiment. In producing this pattern we used FQC109 type of mill. There were 5 different corn sizes of 250-200; 200-160; 160-125; 125-100; <100 μms used in the partition of the fractions. The results this research confirm that the quality of wheat flour can be modified by different methods of pattern production.
Correlation of pruning time and fruiting part differentiation of sweet cherry cultivars
Authors: Barbara Vaszily
Published: June 2019

There are several extended studies in sweet cherry production in Hungary and all over the world i.e. for creation and maintainence of smaller tree crown and high density orchards. The use of suitable dwarf rootstocks for this fruit species are very limited. On one hand, most of the draf rootstocks do not cause enough growth reduction and on the other hand these rootstocks are get old very quikcly and their fruits become small, and therefore, they not serve the requirements for intensification. In summary, there is a need for those rootstock which are vital, regeneration enhanching and delay ageing. Due to ensuring above features, Prunus mahaleb is still an obvious solution for intesive production. Increasing intensification can be obtained by use of modernisation of technological elements and suitable cultivar choice. According to this increasement of intensity through application of novel technological elements (timing, manner and severity of pruning) and selection of the proper cultivar is implement able. Important differences are experienced between sweet cherry cultivars in their growth attributes, light demand and dynamics of fall back in regenerative potencial of different aged wood parts. From this point knowledge of the abow detailed is very important in order to maintain rentability of already established plantations. Our work shows the formation of production part in9-year old plantation with spike spindle and free spindle crown forms depending on pruning timing (winter, summer) and determining of their various effects.
Performance Analysis of Combined Cycle Power Plant with Multi-Effect Distillation (MED) Desalination Process
Authors: ERBAŞ Oğuzhan
Published: June 2019

Abstract- Water is the
most important chemical component on earth. Seawater distillation processes
have a considerable promise as a technique suitable for producing large scale
quantities of potable water from the seawater. It involves a broad range of
technologies that yield access to marginal sources of water such as seawater,
brackish ground- and surface water, and wastewater. Given the reduction in
access to fresh water in recent decades and the uncertainty in availability
effected by climate change, desalination is critical for ensuring the future of
humanity. Multieffect distillation employs the same principles of multi-stage
flash distillation but contrary to it, it occurs in a series of vessels
(effects) and uses the principles of evaporation and condensation at reduced
ambient pressure. A dual-purpose desalination plant is a process that produces
both power and desalted water with the optimum use of thermal energy in
producing the two products. It offers a considerable saving in energy usage.
The present paper focuses on the modelling and thermodynamic analysis of the "Multi-Effect
Distillation" (MED) desalination installed in combined cycle power plant.
The expected performance characteristics of the designed MED desalination plant
are determined.
Daya Tahan dan Eksistensi Pesantren Di Era 4.0
Authors: Manan Muhamad Abdul
Published: June 2019

Pesantren as one of the religious education institutions that are the womb of the prospective Muslim scholars, they also have a mandate to carry out educational missions based on Article 1 (1) of Law No. 20 of 2003 namely developing the potential of students to have religious spiritual power, self-control, personality, intelligence, noble character and skills needed by him, society, nation, and state. Era of Industrial Revolution 4.0 (here in after: Era 4.0) has an unimportant impact. It affects all aspects of human life. Included in this case is education. This era is characterized by the increasingly central role of cyber technology in human life. So do not be surprised if in the world of education the term "Education 4.0" appears. Availability of various information is born from the 4.0 digital revolution makes everyone able to access knowledge without being limited by space and time, therefore the pesantren curriculum continues to be encouraged to be contextual to the needs of the times, but on the other hand the pesantren is still able to maintain its identity as guardian of tradition. Efforts that can be developed in Islamic boarding schools in the era of 4.0 include building digital literacy in Islamic boarding schools and creating Islamic study channels.
BUILDING AN AUTOMATIC DOOR SYSTEM USING FACE RECOGNITION
Authors: Doan Mien Phuoc , Nguyen Thanh Ngoc Dan
Published: June 2019

The sustainable development goal of Tra Vinh University is the quality of training combined with science and technology to gradually bring the university reaching the world development. In order to promote the development of scientific research, it is necessary to create practical applications at Tra Vinh University and the research can be deployed to businesses and households. Currently, in contributing to the implementation of the above objectives, our team  focuses on study the deployment models of using machine learning methods in combination with supporting frameworks to create applications that can automatically open and close the door by face recognition. In this study, we have collected videos as data for face and facial gestures recognition.
MULTI-FEATURE MODEL FOR DUPLICATE BUG REPORTS DETECTION SOLUTION
Authors: Nhan Phuc Minh , Nguyen Thien Hoang Duy
Published: June 2019

For open source software such as Firefox, Eclipse, Subversion,. . . they usually have a system for bug management that sent by users. These bug reports help the system identify various software bugs which makes software maintenance better. However, a situation occurs that there are many error reports sent to  the processing repository that these bug reports were previously reported by different users, this is called duplicate bug reports. In this paper, we introduce a multi-feature model combined with weighted improvements from CFC (ClassFeature-Centroid) to detect duplicate bug reportsautomatically. We have experimented on three projects of Mozilla, Eclipse and OpenOffice. The results show that our method can improve 8-12% better as compared to the compared methods.
DESIGN OF AUTOMATIC HIGHT-LOW BEAM CONTROL SYSTEM ON AUTOMOBILE
Authors: Ngo Ha Thanh , Huynh Banh Thanh
Published: June 2019

Car lighting system is a necessary means that helps drivers to observe in limited visibility conditions, the lighting system is also used to inform the movement situation so that people around can recognize in the night. In addition, the system also has the function of displaying  the automobile operating parameters to the driver through the tableau panel and illuminating the space in the automobile. In cars, in order for the lighting system to work, the driver must turn on the light switch and make a continuous transition between hight beam and low beam when the car is operating in the city or when there is a vehicle moving in the opposite direction. To reduce unnecessary operations when controlling the lighting system, it is necessary to have a design which installed automatic hight-low beam control system. The paper presents the design, calculation and installation of electrical circuits that control the automatic hight-low beam transition on automobile by LabVIEW software and applies this experiment on a real model.
MODELLING AND SIMULATION OF THE AUTOMOBILE DYNAMICS MOVEMENT USING MATLAB SIMULINK SOFTWARE
Authors: Phan Tai Tan
Published: June 2019

As the car moving, the power of the engine is transmitted to the active wheel through the transmission system. In such a transmission, the power is lost due to friction in the powertrain and the power of the active wheel will be less than the output of the engine. The transmission system consists of components such as clutches, transmissions, propeller shaft, active bridge, differential and active wheels. During the working process, each of these parts is affected by the individual factors that reduce their performance. This article is to analyze the structure, function, task and modeling of the vehicle transmission system components,  building the dynamics movement model of the transmission system according to D’Alambert principle, in which the dynamics of the wheel and the axle as well as the rigidity of the powertrain and chassis are mentioned. The Matlab Simulink software is used to simulate the automobile drive system. Thereby, the factors affecting the operation of the transmission system are analysed and evaluated in order to clarify the law of motion, and propose solutions that improve the quality of the transmission system on automobile.
SOLUTION OF ADDITIONAL CHARGING TO ELECTRIC MOTORCYCLES
Authors: Phan Tuan Van , Phan Tai Tan , Tang Minh Tan
Published: June 2019

Currently, the gradual scarcity of traditional fuels, the rise of fuel prices and the environmental pollution are social issues of concern. The study is implemented to investigate the efficiency of using solar panel and braking system as recharging sources to a commercially electric motorcycle. The simultaneous combination of the two additionally recharging approaches will help the electric motorcycle to have a longer working distance as compared to original one. The result contributes to exploiting electric motorcycle effectively. In addition, the success of this work will partly contribute to energy saving and reduction of environmental  pollution in transportation system.
FACTORS AFFECTING CONSUMERS’ ATTITUDE TO SMARTPHONE ADVERTISING IN HO CHI MINH CITY
Authors: Ha Giao Khanh Nam , Do Dung Thi Thuy
Published: June 2019

This research is to examine factors affecting consumers’ attitude to smartphone advertising in Ho Chi Minh City by questioning 290 consumers. The methodologies of Cronbach’s Alpha, Exploratory Factor Analyzing (EFA) and linear multiple regressioning were used by SPSS program. The results show that there are five main factors affecting consumers’ attitude to smartphone advertising in Ho Chi Minh City, ordered by the decreasing level of importance: entertainment, informativeness, credibility, non-  irritation, permission and control. From that, the research makes the suggestions to smartphone advertisers in order to improve customer service better.
THE INFLUENCE OF THE HARVESTED MATURITY TO CANTALOUPE QUALITY CUCUMIS MELO L. VAR. RETICULATUS IN SHELFLIFE
Authors: Nguyen Lieu Thi Thuy , Le Ngoc Si
Published: June 2019

Maturity harvest, quality and the shelf life of fruits after harvesting have intimate relationships with one another, especially to the climacteric fruit group. Maturity harvest is the most important factor that determines postharvest shelf life and the quality of cantaloupe [1]. There are significant physiological changesbetween immature and mature fruit during the development of cantaloupe that affect the quality of cantaloupe. In this research, Chu Phan  cantaloupe was harvested at 26, 29, 32, 35, 38, 41 days after setting fruits. The results showed that the most suitable time for harvesting the cantaloupe wasat 32 days after setting fruits. The average weight of fruit was 1,68 kg, the hardness reached 0,1834 kg/cm2, the brix valued 6° brix, total sugar of 40mg/g, titratable axitityof 0,05%, vitamin C of 41 mg%; and the storage time at 10 ± 1°C has been extended to 21 instead of 15 days to the cantaloupe which was stored at 28 ± 1°C.
BUILDING THE ASSESSMENT CRITERIA OF EXPERIMENTAL CAPACITY BASED ON SELF-CREATED EXPERIMENTS
Authors: Nguyen Anh Hoang
Published: June 2019

Experimental competency is one of the specialized capabilities, important to be conceived and developed in the process of teaching physics. In this article we  present how to use selfcreated experiments to assess the studying results in relevance to the experimental competency development for students in teaching physics in high school.
PREPARATION AND CHARACTERIZATION OF CURCUMIN NANOPARTICLES LOADED THERMOSENSITIVE GELATIN - PLURONIC F127 HYDROGEL FOR WOUND HEALING APPLICATION
Authors: Nguyen Trinh Thi Ngoc , Tran Quyen Ngoc , Nguyen Linh Thi Yen , Nguyen Thinh Tien
Published: June 2019

Curcumin, a natural phenolic compound, is extracted from turmeric exhibiting several biomedical activities. Unfortunately, less aqueous solubility causesl  drawback in medicinal application. This study introduces a method in order to produce a biomaterial containing high content of curcumin nanoparticles, which can overcome curcumin’s poor dissolution and wound healing. This method uses a thermo-reversible pluronic F127-grafted gelatin (GP) which play the role as surfactant to disperse and protect nanocurcumin from aggregation. The synthetic GP copolymer was identified via 1H NMR. Thermal transition behavior was identified under test tube inversion and differential scanning colorimetry (DSC). The synthesized curcumin size was characterized by Transmission Electron  Microscopy (TEM) and Dynamic Light Scattering (DLS), which indicated that the size of nanocurcumin significantly varied ranging from 7 to 285 nm according to the amount of feeded curcurmin. The nanocurcumin-dispersed GP copolymer solution forms the nanocomposite hydrogel when warmed up to 36.27 °C. Release profile indicated the sustainable release control of nanocurcumin  in the thermogel system. These results showed potential application of the biomaterial in tissue regeneration.
COMPARING TECHNICAL EFFICIENCY OF TRADITIONAL FLOODING AND DRIP IRRIGATION TECHNIQUES IN WATERMELON PRODUCTION IN TRA VINH PROVINCE
Authors: Duong Buu Hoang , Tran Tram Thi Mai , Nguyen An Van Vu
Published: June 2019

This article aims to compare the technical efficiency between two irrigation systems: traditional flooding and drip irrigation in watermelon production in Tra Vinh province, thereby recommending a more efficient farming model. This paper uses descriptive statistics, SFA and multivariable regression based on primary datacollected from 160 farmers applying these two irrigation models in Cau Ngang and Duyen Hai districts. The study found that the cost of plant variety, the amount of phosphorus, costs for post-harvesting, labor and irrigation affected the productivity of watermelon in the traditional flooding irrigation model; whereas the amount of potassium, the amount of phosphorus and cost of plant variety were factors affecting the productivity of watermelon in the drip irrigation model. Theresults also showed that producers applying the drip irrigation model achieved higher technical efficiency. The average efficiency levels achieved were 79,47% and 86,03% in the traditional flooding irrigation and drip irrigation respectively. In addition, the factors affecting the income of farmers in the traditional flooding irrigation model included household labor, loans, the amount of phosphorus, the amount of potassium, and cost of pesticides and irrigation. Meanwhile, the income of farmers in the drip irrigation model was affected by education, training, costs for post-harvesting and loans.