bluuebunny/crossref_metadata_2025 huggingface dataset:
Gestión del riesgo ambiental en almacenamiento y comercialización de productos químicos
Authors: Cañón Rodríguez Dora María
Published: January 2019

Introducción. El almacenamiento de sustancias químicas peligrosas representa un potencial escenario donde el riesgo químico se convierte en el riesgo ambiental. Objetivos. Analizar y evaluar el riesgo ambiental que puede presentarse en una pyme de almacenamiento y comercialización de productos químicos. Materiales y métodos. Se aplican los conceptos de evaluación ambiental y gestión de los riesgos, adaptados a un estudio de caso, para describir y representar las relaciones existentes entre los contaminantes y los receptores que pueden verse afectados, las vías de liberación de las sustancias químicas y los efectos sobre los factores ambientales. Para la evaluación de riesgo ambiental se aplica la Norma UNE 150008:2008. Resultados. La evaluación ambiental señala como impacto de importancia alta el riesgo químico por presencia de sustancias químicas peligrosas, e impacto de importancia media la contaminación de suelos por fugas y derrames. En la evaluación y valoración de riesgos ambientales se clasificaron, en un nivel de riesgo alto, la liberación de vapores ácidos por derrame accidental de ácido nítrico, y la liberación de vapores volátiles de formol. El tratamiento de los riesgos está orientado hacia el control del cambio en tecnología y en administración de procesos de producción. Conclusiones. Al abordar con esta metodología el riesgo ambiental, se valora el peligro de causar daños al medio ambiente, a las personas o a los bienes, como consecuencia del deterioro sufrido por los factores ambientales. Una verdadera y efectiva gestión del riesgo debe incluir dos etapas: planificar la respuesta a los riesgos, y monitorizar y controlar los riesgos.
Contabilidad ambiental, tendencias investigativas mundiales
Authors: Higuera Ojito Víctor Hugo , Pacheco Martínez Gabriel Alfonso , Londoño Restrepo Santiago , Cuéllar Rojas Oscar , González Franco Rubén Antonio
Published: January 2019

Introducción. Actualmente el impacto ambiental es más evidente y perceptible a nuestros sentidos; los tryrtyuiñuyiiiirrcambios en los diferentes ecosistemas ponen en evidencia la urgente necesidad de articular los planes, programas y políticas entre los Estados, las empresas y los ciudadanos; para ello se requieren sistemas de información que permitan la gestión de dichos planes y programas. Es así como la contabilidad, desde su dimensión holística, se convierte en eje facilitador para la identificación, registro y control de todas las acciones previstas para mitigar el impacto ambiental. Objetivo. El objetivo del estudio fue realizar una revisión y análisis bibliográfico sobre los avances y tendencias de la contabilidad ambiental a partir de la producción científica en la categoría “Accounting” de los AJSC Codes de Elsevier. Materiales y métodos. En la revisión documental y bibliográfica en la base de datos Scopus (Elsevier) se identificaron 332 documentos publicados con la palabra clave environmental accounting. Resultados. Posteriormente se agruparon los documentos (citas-tipos) y autores por país, luego se ordenaron de mayor a menor frecuencia. Como resultado se obtuvo que la producción científica en el período 1996-2015 con la palabra clave environmental accounting (contabilidad ambiental) equivale a solo el 0.6 % del número de documentos publicados en la categoría Accounting. Conclusión. Por tanto, los cambios suscitados en la economía global, así como la introducción de nuevos marcos normativos contables han desplazado el interés de los investigadores contables sobre el campo ambiental, lo cual se refleja en la baja producción científica al respecto; adicionalmente, Latinoamérica representa solo el 6,3 % del total de documentos analizados.
Gradiente térmico en la ciudad de Medellín y su relación con el crecimiento urbano:
estudio de caso
Authors: Quijano Pérez Silvia Andrea , Ramírez Velásquez Iliana María , González Manosalva José Luis
Published: January 2019

Introducción. Algunas investigaciones han mostrado que el gradiente térmico observado entre los espacios urbanos densamente construidos y la periferia rural está asociado con la expansión urbana en las grandes ciudades, y es el resultado de la modificación en la cobertura del suelo debido al proceso de urbanización y de actividades como el transporte y la industria. El Valle de Aburrá ha sufrido un cambio notorio en el aumento de la temperatura en las últimas décadas. Sin embargo, hacen falta estudios cuantitativos que evidencien la influencia del crecimiento urbano sobre la temperatura de la ciudad, a través de modelos que permitan estimar predicciones que apoyen la generación de herramientas y estrategias de planificación territorial. Objetivo. Se pretende evaluar el grado de asociación entre los cambios de temperatura en la ciudad y el crecimiento urbano. Materiales y métodos. Se utilizaron imágenes satelitales Landsat obtenidas del USGS entre 2010 y 2014 para estimar la temperatura superficial. La temperatura atmosférica se obtuvo de registro de seis estaciones meteorológicas. Resultados. No hubo diferencia entre los sistemas de medición de la temperatura (superficial y atmosférica) y se evidenciaron variaciones de la temperatura atmosférica entre estaciones. Mediante un modelo descriptivo se encontró una asociación entre el área construida y las temperaturas superficiales, identificándose zonas de alto grado de densificación con aumentos evidentes de la temperatura mediados por los usos del suelo. Conclusiones. Se encontró una asociación entre el área construida y las temperaturas superficiales, identificando áreas de alto grado de densificación con evidentes aumentos de temperatura causados por el uso del suelo
Creación y estructuración de una red de periodismo ambiental Convenio: Corantioquia y Corporación Universitaria Lasallista
Authors: Acosta Quiroz Lina María
Published: January 2019

Introducción. La Corporación Universitaria Lasallista y Corantioquia aúnan esfuerzos con el propósito de fortalecer la información con actores estratégicos, como lo son los líderes comunitarios, quienes ejercen el periodismo en su zona de influencia; se presenta la investigación con diseño mixto y enfoque de investigación-acción, para generar reflexiones y acciones aportantes sobre el desarrollo sostenible del territorio en el cumplimiento de las metas definidas. Objetivo. Crear y estructurar una red de periodismo ambiental en la jurisdicción de Corantioquia, para aunar esfuerzos comunes en pro del medio ambiente. Materiales y métodos. La investigación-acción presentada parte de un recorrido teórico de las palabras clave descritas; luego, recolectar información primaria a través de encuestas y entrevistas semiestructuradas, con personas activas en procesos de red, periodismo y medio ambiente, para describir tendencias por medio de métodos gráficos y porcentuales con el fin de propiciar cambios sociales a través de la formación de actores. Resultados. Se implementó la Red de Periodismo Ambiental en la región, como una estrategia para difundir, compartir y conocer información responsable alrededor de la sostenibilidad y la sustentabilidad de los territorios, así como motivar una cultura informativa en torno a la protección del medio ambiente. Conclusión. Es importante crear la Red de Periodismo Ambiental, pero aún más, estructurar y permitir su dinamización, activando estrategias educomunicativas a partir de los hallazgos obtenidos, fortaleciendo el conocimiento de los líderes que manejan el periodismo en los territorios, la interacción informativa y las acciones mancomunadas para una mayor y mejor divulgación de los contenidos sobre el medio ambiente.
Evaluación de una mezcla para coagulantes naturales, Opuntia ficus y Moringa oleífera en clarificación de aguas
Authors: Olivero Verbel Rafael , Florez Vergara Alexy , Vega Fellizola Luis , Villegas de Aguas Glenda
Published: January 2019

Introducción. En este proyecto de investigación se utilizaron coagulantes naturales Opuntia ficus-indica y Moringa oleífera, y se comparó su desempeño frente al sulfato de aluminio (alumbre). Objetivo. Evaluar el desempeño de tres coagulantes para la remoción de sólidos suspendidos y disueltos para el tratamiento del agua del río Magdalena. Materiales y métodos. Inicialmente, para el acondicionamiento de la materia prima se utilizaron operaciones unitarias tales como peladas, secadas, trituradas y tamizado (malla de 6 mm) para convertir la Moringa oleífera y la Opuntia ficus en polvos. Las variables principales a analizar fueron la turbidez y la correlación de turbidez con la absorbancia, las cuales se hallaron con la ayuda de un turbidímetro y un espectrofotómetro, respectivamente. Se determinó la dosis de clarificantes a usar para las muestras, utilizando un diseño experimental de 8x3x2. Resultados. Se compararon los resultados con los coagulantes por separado y mezclados para saber si el uso de sulfato de aluminio en los porcentajes dados altera la clarificación; se compararon los valores aceptables de los parámetros fisicoquímicos para el agua potable de 2 UNT para la turbidez, y entre 0,10 y 0,20 para el color, señalados en la normativa de Colombia. Conclusión. Los resultados obtenidos permitieron concluir que mezclando Moringa oleífera y Opuntia ficus se puede remover un porcentaje de turbidez mayor a 90 %, en comparación con mezcla de alumbre y coagulantes naturales, la cual puede remover al menos un 99 % de turbidez en el agua; a su vez, se logró visualizar una disminución en los sólidos por medio de la absorbancia.
Biosólidos de tratamiento de aguas residuales domésticas, como adiciones en la elaboración de ladrillos cerámicos
Authors: Fuentes Molina Natalia , Isenia León Samir Alfonso , Ascencio Mendoza José Gregorio
Published: January 2019

Introducción. Actualmente se viene estudiando el aprovechamiento de biosólidos como adiciones residuales en la elaboración de materiales cerámicos, para la construcción no estructural; dentro de estos se encuentra el reemplazo parcial de la arcilla utilizada en la producción de ladrillos, con importantes beneficios ambientales y económicos. Objetivo. Evaluar el comportamiento físico mecánico de mezclas biosólido arcilla en unidades experimentales para su uso como material de construcción no estructural. Materiales y métodos. Se realizó la caracterización de los biosólidos y arcillas, con los cuales se elaboraron 60 ladrillos cerámicos, para determinar los porcentajes de adición (5, 10, 15, 20 y 30 %) óptimas de las mezclas, en razón de identificar la mejor respuesta frente a las pruebas de resistencia a la compresión y absorción de agua (capilar, sumergida y ebullición); además se elaboraron 6 ladrillos patrón (100 % de arcilla). Resultados. Se evidencian resistencias promedio de 27,1 MPa, cumpliendo los límites mínimos establecidos en la NTC-4205 para mampostería estructural (20 MPa) y no estructural (14 MPa). Conclusiones. Los ladrillos cerámicos con porcentajes óptimos de adición de biosólidos son los del 5, 10 y 15 %, los cuales presentaron resistencias superiores a los ladrillos patrón en todas las pruebas realizadas, indicándose que, al adicionar biosólidos a la mezcla de arcilla para la elaboración de ladrillos cerámicos, se garantiza su viabilidad técnica, por cuanto cumplen con los estándares de calidad establecidos en la norma técnica colombiana.
Diagnosis of the health care waste management system of hospitals in the west of Santa Catarina State-Brazil
Authors: Franzosi Fábio , Kist Lourdes Teresinha , Ribas Moraes Jorge André , Machado Ênio Leandro
Published: January 2019

The management of health solid waste is seen as an emerging and urgent need in Brazil.
TRADISI PESANTREN SEBAGAI PUSAT PERADABAN MUSLIM NUSANTARA
Authors: Abdullah Cholid
Published: February 2019

Pesantren (Islamic boarding school) with its typology hasgiven effect to the civilization in Indonesia. Pesantren in Indonesiaplays three important roles in Islamic civilization. First, pesantrenserves as center of religious study that creates muslim scholars, so thatthey will develop Islamic teachings. Second, the act of openness to themodernization by considering about the act of selectivity that functionsas a filter. Third, pesantren creates a link to connect among religion,culture and local wisdom.
Czynniki kształtujące produkcję mleka w Polsce na tle UE
Authors: Bórawski Piotr , Zalewski Krzysztof
Published: January 2019

W pracy analizie poddano produkcję mleka w Polsce oraz czynniki ją determinujące na tle UE. Z analiz wynika, że produkcja mleka w Polsce po akcesji do UE wzrosła. Przyczyn tego zjawiska należy upatrywać w zmianach, jakie zaszły na rynku mleka i związane były z integracją europejską, systemem kwotowania i dostosowaniu do standardów unijnych w zakresie dobrostanu zwierząt. W analizie wyników badań wykorzystano metody tabelaryczne, graficzne i opisowe. W pracy przeprowadzono analizę statystyczną, z której wynika, że głównym czynnikiem decydującym o produkcji mleka w Polsce jest kurs euro-złoty.
Modelowanie bilansu węgla organicznego w glebie oraz emisji gazów cieplarnianych w skali regionalnej oraz w Polsce
Authors: Faber Antoni , Jarosz Zuzanna
Published: January 2019

Celem pracy były symulacje uproszczonego bilansu węgla oraz pochłaniania i emisji gazów cieplarnianych (CO2, CH4, N2O) dla scharakteryzowania potencjału mitygacji zmian klimatu w rolniczym użytkowaniu gruntów ornych. Symulacje wykonywano przy użyciu modelu DNDC dla województw i Polski z użyciem dwudziestoletnich serii danych meteorologicznych. Stwierdzono, że system uprawy płużnej ze zbiorem resztek pożniwnych (a) powodować będzie w Polsce emisję netto tych gazów wynoszącą 0,203 t CO2 ekw. ∙ ha-1 ∙ r-1. Natomiast system uprawy uproszczonej z pozostawieniem na polu resztek pożniwnych (b) oraz system uprawy płużnej z regularnym stosowaniem obornika i zbiorem resztek pożniwnych (c) pochłaniać będą CO2 w ilościach wynoszących odpowiednio: 1,225 i 0,172 t CO2 ekw. ∙ ha-1 ∙ r-1. Uzyskane wyniki sugerują, że w perspektywie średnioterminowej (20 lat), badane systemy uprawy mogą być uznane za praktyki mitygujące zmiany klimatu. Zastosowanie systemów uprawy w pożądanej proporcji w stosunku do areału gruntów ornych w Polsce mogłoby pozwolić na średnie pochłanianie gazów cieplarnianych rzędu 0,556 t CO2 ekw.∙ha 1∙r-1.
Issues of Country of Origin, Market Incentives, and Recycling in Opinions of Passive Solar Collector Owners
Authors: Klepacka Anna , Florkowski Wojciech , Wójcik Katarzyna
Published: January 2019

Thermal solar panel installation has been growing in Poland in response to the EU policies and available subsidies. This paper investigates the attitudes of residents of four counties in Mazowieckie Voividship in Poland about the origin of solar panels. Results show that rural residents did not attach importance to awarding preferences to domestic solar panel producers or to foreign producers in exchange of trade benefits. The recycling of used solar panels concerned a relatively small portion of respondents and seems to justify the passage of regulations obligating the solar panel industry to recycle the used panels.
Changes in the EU Beef Market
Authors: Bąk-Filipek Ewa
Published: January 2019

The article below discusses and compares changes in the beef market, occurring in the EU, to the global market. Global beef market is going through endless changes, although direction and rate of these changes vary depending on which region the analysis applies to. In recent years Polish beef market has been slowly becoming marginalized on the internal market, mainly because of the decreasing importance of beef consumption in the balance of meat consumption. The poultry market is becoming more and more important, both on the supply and demand sides. The study also draws attention to the fact that agricultural markets, the meat market in particular, are susceptible to the cyclical fluctuations on international markets. Because of that the EU policy, as well as the policy of a given country, play a big part to the individual agricultural markets.
The Taxation of Agriculture in the European Union Countries
Authors: Gruziel Kinga , Raczkowska Małgorzata
Published: January 2019

The paper sets out the key principles for taxation of agriculture in selected European Union countries. The theoretical foundations of tax systems in the context of their functions and features specified as desirable in the literature are discussed. EU agricultural taxation systems are presented in reference to optimisation and tax competitiveness. Some shared features of these agricultural taxation systems were pointed out and their division in two basic models (the British model and the continental model), which was presented taking as example the countries in which these models operate. Taxation of income derived from agricultural business activity is a natural direction of changes in tax systems. The tax policy implemented in the European Union countries in relation to agriculture make use of the principle of tax justice to the highest possible extent. The diversity of the tax rules and structures applied in the EU makes it possible to tax agricultural income without limiting the development potential of agricultural enterprises (farms), and often stimulates them. The form of individual tax systems results from numerous economic, social and political circumstances. Special tax treatment of agriculture is expressed through tax construction elements, e.g. right to deduct the value of generated loss or investment expenditure from taxable income.
Rola środków pochodzących z Unii Europejskiej w rozwoju pszczelarstwa na przykładzie Wojewódzkiego Związku Pszczelarzy w Poznaniu
Authors: Pawłowski Krzysztof
Published: January 2019

Poza dostarczaniem niezwykle cennych produktów, pszczoły są jednym z gatunków zdolnych do zapylania roślin entomofilnych. Stąd wspieranie rozwoju pszczelarstwa w obliczu ich znaczenia dla ludzkości wydaje się być niezwykle istotne. W Polsce zadanie to jest realizowane także przy użyciu środków pochodzących z Unii Europejskiej w ramach Programów Wsparcia Rynku Produktów Pszczelich. Celem artykułu jest zatem określenie roli środków pochodzących z Unii Europejskiej w rozwoju pszczelarstwa w województwie wielkopolskim na przykładzie Wojewódzkiego Związku Pszczelarzy w Poznaniu. Do badań wykorzystano niepublikowane dane WZP w Poznaniu, a także wyniki przeprowadzonej ankiety. Wyniki badań wskazują na pozytywne oddziaływanie środków z UE na rozwój pszczelarstwa w województwie wielkopolskim, zwłaszcza ze względu na spore zainteresowanie mechanizmem wśród pszczelarzy.
Classification of Agricultural Emissions Among OECD Countries with Unsupervised Techniques
Authors: Andrzejuk Adam
Published: January 2019

Agricultural emissions represent greenhouse gas emissions from crop and livestock production. There are various estimates on agricultural emissions, however on average about 14 to 25 percent of total global emissions comes from agriculture. The main goal of this paper was to present distribution of agricultural emissions among OECD countries with the help of clustering analysis. Clustering analysis is one of the tools used in the field of exploratory data mining. Two methods were used in the analysis: K-means and HDBSCAN algorithms. Both techniques are part of unsupervised learning tasks, which group data into multiple clusters. Finally, an appraisal of obtained classifications was performed.
Spatial aspects of emigration out of Serbia: Three "Hot" emigration zones
Authors: Penev Goran , Predojevic-Despic Jelena
Published: January 2019

The paper analyzed the dynamics of the emigration of the population of Serbia
in the period of 1971 to 2011, primarily based on the results of the five
latest population censuses. Special attention was paid to the spatial aspect
of emigration, at the level of the lowest administrative units
(municipalities). It was shown that the shares of persons working or living
aboard were very uneven by municipality, and that the differences became
increasingly pronounced over time. Very uneven shares of persons working or
living abroad in the total population of Serbia by municipality, as well as
the trend of increasing differences, also influenced the very heterogeneous
spatial distribution of that emigration contingent. Based on the
concentration of population abroad, as well as the percentage of persons
abroad in the total population (in the country and abroad), the paper defines
three "hot" zones of substantial emigration. Zone 1 (in the central-eastern
Serbia) is traditionally a high emigration area, which, for all three
observed points in time (1991, 2002 and 2011), had at least twice as high a
share of population abroad as the average for Serbia. Zone 2 (in the south of
Serbia) consists of the municipalities of Bujanovac and Presevo, where the
majority of the population consists of ethnic Albanians. The shares of
population abroad was already in 1981 and 1991 noticeably higher than the
average for Serbia, but also significantly lower than in Zone 1. Between 1991
and 2002, the number of emigrants from that zone was more than tripled, and
their share in the total population of emigration Zone 2 increased from 6.1%
to 23.1% in 2011. Zone 3 (five municipalities from the Serbian part of the
region of Sandzak) did not join the group of notably emigration areas until
the 1990s. Between 1991 and 2002, the number of persons abroad increased by
up to six times, and their share in the total population of those five
Sandzak municipalities increased from 2.3% to 12.6%. In this paper, all three
zones were analyzed, as well as the structures of emigrants based on the
length of their stay abroad, the country of destination and ethnic
composition. For all three zones, it is notable that the countries of
destination do not differ significantly in terms of length of stay abroad,
based on which the authors conclude that new emigrants primarily go to places
that already have formed migrant networks. In all three zones, the share of
ethnic Serbs in the total population of the country is greater than their
share in the total number of emigrants. Additionally, census data indicated
that members of the local major ethnic group in Zones 2 and 3 participated
significantly more often in international migration than "local" ethnic
Serbs. In connection to this, the authors stress the importance of the
political aspect of this issue, especially in the period of crises and wars
during the 1990s.
Article retraction notice
Authors: Editorial E
Published: January 2019

We regretfully announce that the article: ?Dimitrijevic B., Jovic S.,
Jezdimirovic Milanka, Bacic D., Savic Mila, Jezdimirovic N., Vegara M. 2015,
Infekcija ovaca sa Strongyloides papillosus - uticaj intenziteta parazitske
infekcije i terapije albendazolom na odredjene biohemijske parametre u krvi
ovaca, Veterinarski glasnik 69 (1-2) 41 - 61, DOI 10.2298/VETGL1502041D?,
contains results peviously published in the article: ?Dimitrijevic B,
Borozan Suncica, Jovic S, Bacic D, Katic-Radivojevic Sofija, Stojanovic S,
Savic Mila, 2013. The effect of the intensity of parasitic infection with
Strongyloides papillosus and albendazole therapy on biochemical parameters
in sheep blood, Acta Veterinaria (Beograd), 63 (5-6), 581-600, DOI:
10.2298/AVB1306581D?. The Editorial Team of the journal Veterinarski Glasnik
has decided to retract the paper. Apologies are offered to readers of the
journal Veterinarski Glasnik that this error was not detected during the
submission process.

 Link to the retracted article 10.2298/VETGL1502041D
Peranan Pola Asuh Orang Tua dalam Pembentukan Karakter Anak
Authors: Kusdi Solihin Slamet
Published: January 2019

This article addresses the topic of family, which reviews that the family has an important role in shaping the child character. The used approach is a naturalistic approach which is often called a qualitative approach. To obtain valid data used data collection techniques that include interviews, observation and documentation. Furthermore, data analysis is carried out involving data organization. This discussion found that as a smallest system, families instill moral values of a child's personality. During the growth period a child has many questions about things that are felt new. Children have critical questions, this is where good communication skills are required by parents in answering questions raised by children. Families now have more complex functions that include the functions of production and consumption. This writing needs to be done so that readers can have a view on how the family influences the development of a child's character. In the end it can be said that the family has an important role in shaping the child character.
PEMBENTUKAN KARAKTER ISLAMI DALAM HADIS DAN IMPLIKASINYA PADA JALUR PENDIDIKAN NON FORMAL
Authors: Yuliharti Yuliharti
Published: January 2019

Education plays a very important role in ensuring the survival of the state and nation. The rise of various types of crime, brawls between students, cases of underage children, and the use of illegal drugs, as well as corruption cases that are increasingly becoming increasingly an indication of moral decline or moral decline. Therefore, the formation of Islamic character both in the family, the school and in the community becomes a necessity and necessity and must work together and support each other. Therefore, in the current era of globalization, it is very important to look for appropriate efforts as a reference in shaping Islamic character so that it can give birth to a generation that excels in character. Modeling the pattern of the Prophet Muhammad in shaping the character of the generation of friends from the jahiliyyah character into an Islamic character is a smart and appropriate effort for now and therefore, he is known as a prophet who is also a very successful educator in the world of education. This paper aims to reveal the formation of Islamic character that has been carried out by the Prophet and its implications in the path of non-formal education.
Peculiarities of Lymph Fluid and Its Rheology as a Metastasisin
Authors: Sultanbaev A. V. , Gantsev K. Sh. , Kzyrgalin Sh. R. , Mansurovich N. M.
Published: January 2019

Introduction.Despite the large number of scientific studies on metastasis problems, the state of liquid media (lymph and blood) in oncological diseases remained without sufficient attention.

Materials and methods.A study of the lymph fluid properties, including viscosity, of 100 female patients with malignant breast tumours was carried out. The age of the patients ranged from 50 to 80 years. All patients were in menopause. The material for determination of viscosity was taken 5–7 days following mastectomy with extended dissection of axillary lymph nodes. On the first and second days, the contents of the wound were represented by blood clots and serous fluid. Between three- and five-days following surgery, the discharge from the wound consisted of serous discharge, prelims and lymph. On the fifth day and the following days, the wound discharge consisted primarily of lymph fluid caused by the completed haemostasis and continuation of discharge from the small lymphatic vessels.

Results.The metastatic process is more active during the initial stages of cancer, since the metastatic medium is represented by less viscous lymph fluid while the vessels for the most part retain their permeability. With advanced stages of cancer, when the viscosity of the lymph rises, metastasis slows down.

Conclusions:(1) In breast cancer, the viscosity depends on the stage of the cancer, while the lymph in the tumour pool behaves like a non-Newtonian fluid. (2) In stages I-II of cancer, metastasis occurs more actively than in cancer at more advanced stages. This phenomenon is determined by the rheological properties of the lymph and the functional viability of the regional vascular system.
Artificial Intelligence Developments in Medical Visualization and Oncology
Authors: Buzaev I. V. , Plechev V. V. , Galimova R. M. , Kireev A. R. , Yuldybaev L. K. , Shaykhulova A. F. , Akhmerova S. G.
Published: January 2019

Introduction. The widespread adoption of Artificial Intelligence (AI) technologies forms the core of the so-called Industrial Revolution 4.0.The aim of this study is to examine qualitative changes occurring over the last two years in the development of AI through an examination of trends in PubMed publications.Materials. All abstracts with keyword “artificial intelligence” were downloaded from PubMed database https://www.ncbi.nlm.nih.gov/pubmed/ in the form of .txt files. In order to produce a generalisation of topics, we classified present applications of AI in medicine. To this end, 78,420 abstracts, 5558 reviews, 304 randomised controlled trials, 247 multicentre studies and 4137 other publication types were extracted. (Figure 1). Next, the typical applications were classified.Results. Interest in the topic of AI in publications indexed in the PubMed library is increasing according to general innovation development principles. Along with English publications, the number of non-English publications continued to increase until 2018, represented especially by Chinese, German and French languages. By 2018, the number of non-English publications had started to decrease in favour of English publications. Implementations of AI are already being adopted in contemporary practice. Thus, AI tools have moved out of the theoretical realm to find mainstream application.Conclusions. Tools for machine learning have become widely available to working scientists over the last two years. Since this includes FDA-approved tools for general clinical practice, the change not only affects to researchers but also clinical practitioners. Medical imaging and analysis applications already approved for the most part demonstrate comparable accuracy with the human specialist. A classification of developed AI applications is presented in the article.
Asymptomatic Double Aortic Arch Accidentally Diagnosed for a Child with T-Cell Lymphoma - Case Report
Authors: Ioana Hălmaciu , Andrei Suciu Bogdan , Sorin Roşca , Cristina Nagy Bota Monica , Cristian Trâmbiţaş , Klara Brînzaniuc , Adrian Ivănescu
Published: January 2019

Introduction. Double aortic arch (DAA) represents a vascular malformation generated by the persistence of the right dorsal aorta from the intrauterine life. An aortic ring is formed, that surrounds the trachea and esophagus, resulting in difficulty in breathing and swallowing.

Case report. We report the case of a 13 years old male child who was admitted to the pediatric surgery department accusing the presence of a paravertebral subcutaneous lesions. Histopathological result of the excised lesion revealed the presence of peripheral T-cell lymphoma. Examination of computer tomography angiography (Angio-CT) revealed the presence of a complete arterial chain (aortic double arch - DAA) around the trachea and esophagus, without signs of compression.

Most cases are diagnosed in the first year of life, the literature reports a few cases of DAA diagnosed late, to the adolescent or adult. Clinically most of the anatomical variants are usually symptomatic especially that are associated with congenital heart defects, including also Fallot tetralogy.

Conclusions. Angio-CT is a very useful method in diagnosing arterial or venous malformations, symptomatic or asymptomatic.
New faunistic records of Hydroptilidae (Insecta, Trichoptera) from the Czech Republic
Authors: Komzák Petr , Kroča Jiří
Published: January 2019

Two species, Orthotrichia angustella (McLachlan, 1865) and Oxyethira tristella Klapálek, 1895, previously considered to be regionally extinct in the Czech Republic, are reported from the Dyje River (South Moravia) as new records for Moravia. Hydroptila martini Marshall, 1977 and Oxyethira falcata Morton, 1893 endangered species are for the first time recorded from Moravia (incl. Silesia). New faunistic data on rare species Hydroptila occulta (Eaton, 1873) and Hydroptila tineoides Dalman, 1819 are also provided.
Low-frequency ultrasound can drive the transport of nanoparticles and molecules in polymer gels for biotechnology applications
Authors: Martin Donald K.
Published: January 2019

This paper reports the use of low-frequency ultrasound to influence transport in porous hydrogels with a transducer attached in direct contact with the hydrogel. This is a different configuration than for ultrasound-generating devices utilized previously for enhancing transport of molecules. The advantages of the system reported in this manuscript are that (i) much less acoustic power is required to influence the transport in the hydrogel that is in direct contact with the ultrasonic transducer, and (ii) no cavitation is induced in the hydrogel to influence the transport. This system was first tested in bench-top in vitro experiments by quantifying the transport of gold nanoparticles stimulated by low-frequency ultrasound. Then, to provide an in vivo example for potential biotechology applications, the system was demonstrated to be capable of transporting drugs across the tunics of a rabbit eye into the ocular circulation so as to target the transported drug to the outer retina.
Characterization of coniferous forest soils in the arid zone
Authors: Zouidi Mohamed , Borsali Amine Habib , Allam Ayoub , Gros Raphael
Published: January 2019

Arid zones are very harsh environments characterized by binding edaphic and climatic factors, their rainfall is low and irregular accentuated by high temperatures and their soils are fragile and vulnerable. In recent years, it has been noted that vegetation is regressing and that the majority of reforestation has been a failure. Our study aims to know the physico-chemical and microbiological characteristics of forest soils in the pinewoods of an area of the highlands of western Algeria (Naama). For this we analyzed several soil samples spread over five sampling stations in a forest of Aleppo pine. The results show that the forest soils of our study area are characterized by a generally sandy texture and an orange color for all the selected stations. They are characterized by: a very high C/N ratio that indicates a slow evolution of organic matter and a nitrogen deficiency that is necessary for carbon decomposition. The conductivity shows that the soil contains some salinity, its permeability is strong and its humidity fairly low with an alkaline pH (> 8) due to the increase in the limestone level in the area. Basal respiration is low compared to microbial biomass due to poor physico-chemical quality of soils and the effect of water stresses that slow down microbial activities. Soils in this arid forest are generally characterized by soil homogeneity sensitive to the influence of environmental factors mainly poverty into elements necessary for its proper functioning such as nitrogen and water that accentuate soil degradation of these forest formations, which results in the risk of degradation being triggered.
Opportunities to Develop Intercultural Communicative Competence in Czech lower-secondary schools: Findings of the IRSE Video Study of German
Authors: Zerzová Jana
Published: January 2019

The empirical study deals with the topic of teaching intercultural communicative competence (ICC) in Czech lower-secondary German classes. The aim of the study is to investigate the quantity and quality of the opportunities to develop ICC, the proportion of activities aimed at developing the cognitive, affective, and behavioural component of ICC, the proportion of activities focused on Big-C Culture and small-c culture and culture-general and culture-specific topics. The introductory part and the following part of the study introduce its theoretical background, and terminology is then followed by the methodological part describing the sample (28 German lessons of 7 teachers videotaped in the 8th and 9th grades of Czech lower-secondary classes at seven schools in Jihomoravský region within the IRSE Video Study of German1 project), the way of processing the data (recording, transcription, coding), the research questions and a system of categories (a system for assessing teaching ICC), that was used for analyses of the videotaped lessons. The findings show that emphasis is put on the cognitive component of ICC, while the other components (behavioural and affective) stay at the background. These results are consistent with the results of the IRSE Video Study of English project (Zerzová, 2012), which has the potential of initiating discussion for both English and German language teaching methodologies.
Evaluation of mechanical properties of gas pipeline DN 500 after more than 40 years of its operation
Authors: Hagarová M. , Jakubéczyová D. , Baranová G. , Fujda M.
Published: January 2019

The paper deals with the mechanical properties of steel gas pipeline DN 500 after more than 40 years of operation. Mechanical properties of the pipeline were established by a tensile test at an ambient temperature according to the standard EN ISO 6892-1. The resistance of the pipeline against brittle failure was evaluated by using Charpy impact test according to EN 10045-1. The character of fracture surface after the Charpy test was analysed by using scanning electron microscopy. A high proportion of transcrystalline cleavage was a characteristic feature of fracture surfaces. Mechanical characteristics obtained by static tensile testing were compared with the values obtained from steel manufacturer. Higher elongation was observed in a parallel direction compared to the perpendicular direction to the axis of the pipe. The observed anisotropy of properties was related to the distribution of inclusions in the direction of the deformation of the steel sheets used for the pipeline construction.
A groundwater flow model for the Wolin Island area, including glaciotectonic deformation
Authors: Hoc Ryszard , Sadurski Andrzej , Wiśniowski Zenon
Published: January 2019

During the construction of mathematical models for mapping hydrogeological conditions it is necessary to apply simplifications, both in the geological structure and in hydrogeological parameters used. The present note discusses problems surrounding the mapping of glaciotectonic disturbances that occur in the northern part of Wolin Island (northwest Poland). For this part of the island, a direct outflow of groundwater towards the Baltic Sea basin has been determined on the basis of geophysical survey results. An important feature in the hydrogeological conditions here is the isolation of groundwater from both the Baltic Sea and Szczecin Lagoon by clay with a Cretaceous xenolith. Such a geological structure explains the presence of perched water at considerable heights in zones close to the cliffs, without any significant hydraulic connection with surrounding reservoirs. Hydrogeological conditions of Wolin Island have been modelled using the Visual MODFLOW package v.4.2. In the vertical section, these conditions can be simplified to one aquifer (Pleistocene-Holocene), in which two aquifers can be distinguished. In a large part of the island, these remain in mutual hydraulic contact: layer I – upper, with an unconfined aquifer, and layer II – lower, with a confined aquifer, locally an unconfined one. The schematisation of hydrogeological conditions adopted here has allowed to reproduce present groundwater dynamics in the study area.
Groundwater flow modelling of main groundwater reservoirs in the Gdańsk region, Poland
Authors: Kordalski Zbigniew , Sadurski Andrzej
Published: January 2019

During the last nine years, the 133 main groundwater reservoirs in Poland (MGR) have been documented; these were published last year. Some of these are situated in the coastal zone of the southern Baltic Sea. MGR numbers 111 and 112 are in the Gdańsk area and are discussed in the present paper. The study area is situated on the border region of the moraine plateau of the Cashubian Lakeland, the western part of the Vistula River delta plain and the Bay of Gdańsk. The area of the main groundwater reservoir in no. 112 is developed in Quaternary strata and referred to as Żuławy Gdańskie; it comprises predominantly the city of Gdańsk and slightly exceeds 100 km2. There is also a Cretaceous aquifer, rich in groundwater resources, which is named MGR no. 111, beneath the Quaternary reservoir mentioned above. The area studied and modelled totalled 364 km2, on account of the hydraulic connection between these aquifers. Methods of hydrogeological research, groundwater flow simulations, resources calculation are outlined in the present paper.
Relative fixed Internet connection speed experiences as antecedents of customer satisfaction and loyalty: An empirical analysis of consumers in Germany
Authors: Gerpott Torsten J.
Published: January 2019

So far, management practitioners and scholars alike assume that raises in the contractual absolute maximum bandwidth of Internet connections increase the attitudinal bonds of customers with their access provider. The present study broadens this perspective: In a sample of up to 752 German-speaking Internet users with a wireline Internet access at home, it explores two relative speed characteristics of broadband connections as potential determinants of customer affinity with an access provider. The two reference-dependent aspects comprise customer quality experiences in terms of delivered transmission speeds (1) relative to the maximum down- and upload bandwidths as per customer contract, and (2) relative to speeds emphasized in advertisements of a consumer’s access provider. Furthermore, correlations are analyzed between the frequency with which customers use speed tests to check the quality of their wireline Internet connection and their attitudinal bonds with their access provider. Attitudinal bonding is broken down into customer satisfaction with the performance of the current wireline Internet access at home and propensity to churn at the earliest opportunity. Multivariate regression analysis reveals that the impression that advertised wireline access bandwidths are exaggerated compared to the speeds actually delivered and – to a lesser extent – the perception that the contractual maximum speed is reached only in a low share of a customer’s Internet sessions significantly decrease customer satisfaction and significantly increase customer inclination to churn. The effects of the two speed assessments are not independent of one another: Perceived speed exaggerations in a provider’s ads impair customer bonds less (more) strongly if the experienced share of Internet sessions with speeds below the contractual maximum bandwidth is high (low). More frequent speed testing reduces customer bonding, especially in case that advertised speeds of a customer’s provider are experienced as overblown. The results suggest that wireline Internet access providers can increase the attitudinal bonds with their customers by abstaining from emphasizing maximum speeds in their advertising, which customers rarely reach under standard everyday conditions.
The impact of Digital Platforms on Business Models: an empirical investigation on innovative start-ups
Authors: Ruggieri Roberto , Savastano Marco , Scalingi Alessandra , Bala Dorina , D’Ascenzo Fabrizio
Published: January 2019

Digital platforms have the ability to connect people, organizations and resources with the aim of facilitating the core interactions between businesses and consumers as well as assuring a greater efficiency for the business management. New business concepts, such as innovative start-ups, are therefore created based on innovation, scalability and the relationships within the community around them. The purpose of this work is to deeply understand the evolution of business models brought by innovative and dynamic companies operating through online platforms. In order to achieve the objectives set, an exploratory multiple-case study was designed based on in-depth structured interviews. The aim was to conduct a mixed analysis, in order to rely both on qualitative and quantitative data. The structured interview protocol was therefore designed to collect and then analyse data concerning the company profile and managers’ perspectives on the phenomenon of interest. The interview protocol was submitted in advance and then face-to-face interviews were carried out with the following professional figures: Chief Executive Officer (CEO), General Manager, Chief Technology Officer (CTO), Marketing Manager and Developers. Collected data were analysed and processed through the Canvas Business Model in order to clearly outline similarities and differences among the sample. Results can be considered under two viewpoints. On the one hand, this work provides a detailed overview of the companies interviewed, according to the dimensions of: reference market dynamics, type and number of customers, scalability. On the other one, they allow to identify some success patterns regarding key activities, key resources, channel mix strategy, costs management, value proposition, customer segmentation, key partners and the way to obtain revenues. Results from the multiple-case study with 15 Italian start-ups provide interesting insights by comparing the innovative business models developed and highlighting key differences and similarities. Overall, the start-ups analyzed, operating in several sectors, showed great growth prospects and the possibility to create value for their customers through innovative products and services offered through digital platforms.
Rethinking the state-market relations in the New Age of development
Authors: Dobrescu Paul , Durach Flavia
Published: January 2019

This paper discusses, from a conceptual and theoretical perspective, the recent debates on the relation between the state and the market as drivers of national development. Since the end of the Cold War, three periods are distinguishable according to the way in which development is discussed, envisaged, and designed through state policies. The first one starts from the end of the Cold War and leads to the 2008-2009 crisis, the second includes the ten years of recovery, while the last is unfolding at the moment. The argument takes globalization into account as the background for development, during the three decades observed. The paper analyses the way in which the state-market relationship was envisaged during each period, both in the developed and emerging economies. The paper identifies the factors that ensure steady development, with an emphasis on current challenges. Lastly, the paper presents the particular experience of Central and Eastern Europe during its transition from the communist regime to democracy. The conclusion is that the better understanding of the relationship between globalization and development, the faster their evolution for a given country.
Stochastic Differential Equations Describing Systems with Coloured Noise
Authors: Kolářová Edita , Brančík Lubomír
Published: January 2019

In this paper we deal with stochastic differential equations, that describe systems effected by coloured noise. In electrical systems this can be the case, when e.g. transmission line is modelled by means of proper higher-order ladder network. We define the mathematical representation of the coloured noise as a solution of the Langevin equation and formulate the corresponding Itô type stochastic differential equation. Applying this theory we derive the stochastic model of the network and find sets of individual stochastic trajectories numerically via a stochastic version of the backward Euler scheme. Afterwards respective confi-dence intervals are computed statistically while utilizing Student’s t distribution. The theoretical results are illustrated by an example of a higher-order ladder network. Numerical simulations in the example are carried out using Matlab.