bluuebunny/crossref_metadata_2025 huggingface dataset:
تقييم كتب التربية الإسلامية للمرحلة الأساسية المتوسطة في الأردن في ضوء المعايير المعاصرة للتربية البيئية
Authors: ابوغليون عيد اسماعيل عبدربه
Published: May 2021

هدفت هذه الدّراسة إلى تقييم كُتب التّربية الإسلامية للمرحلة الأساسية المتوسطة في الأردن في ضوء المعايير المعاصرة للتّربية البيئية. تكوّنت عينة الدّراسة من مجتمع الدّراسة نفسه، وهي كُتب التّربية الإسلامية للمرحلة الأساسية المتوسطة الصادرة عن وزارة التّربية والتعليم للعام الدّراسي 2015/2016. وتحقيقاً لأهداف الدّراسة، قام الباحث ببناء قائمة بمعايير التّربية البيئية المعاصرة ومن ثَمَّ تم تطويرها إلى أداة لتحليل الكتب المذكورة. اشتملت أداة الدراسة على تسعة محاور تضمنت سبعة وعشرين معياراً معاصراً للتّربية البيئية، وقد تمّ عرض الأداة على لجنة من المحكمين المتخصّصين في المناهج والبيئة؛ للتأكد من صدقها، ثمّ قام الباحث بعملية التحليل حيث تمّ تكليف أحد المعلمين، ويحمل درجة البكالوريوس في المناهج وطرق تدريس التّربية الإسلامية للقيام بعملية التحليل أيضاً، وقد تمّ استخراج معامل الثّبات باستخدام معادلة هولستي ( Holsti ) للثّبات، حيث بلغ معامل الثبات عبر الزمن( 7.89 %)، وعبر الأشخاص ( 8.86 %)، وهذا المعامل مقبول لأغراض الدّراسة، وقد تمّ استخدام التّكرارات والنسب المئوية، وكشفت نتائج الدراسة عن تدنّي توافر المعايير المعاصرة للتّربية البيئية في تلك الكُتب. وفي ضَوء نتائج الدّراسة أوصى الباحث بتضمين البعد البيئي في كُتب التّربية الإسلامية للمرحلة الأساسية المتوسطة في الأردن، بإدخال معلومات ومفاهيم بيئية، أو ربط المحتوى بقضايا بيئية مناسبة.
Undesirable jurisprudential acts (Almukrohat alfiqhia) in the Hanbali School from book of " Sharh muntaha al- iradat, for Bahooti" from the beginning of sand ablution (Altaymmom) Chapter to end of prayer(Alsalat) Description Chapter: المكروهات الفقهية في المذهب الحنبلي من كتاب شرح منتهى الإرادات للبهوتيمن بداية باب التيمم إلى نهاية باب صفة الصلاة (دراسة فقهية مقارنة)
Authors: Amal Ahmad AL- Malki
Published: May 2021

This study aimed to extract the undesirable jurisprudential acts (almukrohat alfiqhia) in the Hanbali School from book of " Sharh muntaha al- iradat, for Bahooti" from the beginning of sand ablution (Altaymmom) Chapter to end of prayer(Alsalat) Description Chapter. The research organized after the introduction, in which it mentioned the importance of the subject , the reasons for its selection, the previous studies, the research methodology which that adopted extrapolation, tracking and devising. The most important aspects of the research: Linking between the science of fundamentals of jurisprudence and jurisprudence through defining the Undesirable acts at the scholars of fundamentals of jurisprudence , applying that through viewing the branches of scholars and extract the jurisprudential undesirable acts and knowing its legal proves and how the scholars in- ference by it . Through this research we can see the ease of Islam by: Sand ablution (Altaymmom) provisions , removing the Judgmental impurity (Najasa Hakamia), Menstruation . Then I shifted to prayer provisions , starting from the call to pray (Azan) Conditions of prayer , covering Awra , removing the impurity , intention to pray and finished with pray description .
Producing Authenticity: Urban Youth Arts, Rogue Archives and Negotiating a Home for Social Justice
Authors: Poyntz Stuart R.
Published: May 2021

Social justice needs a home, a place where it can be found, especially for young people growing up in fragmented and increasingly inequitable societies. Community youth arts organizations have secured a certain prominence in this context over the past three decades and are now part of the urban infrastructures that shape connected learning networks in highly industrialized nations. In this capacity, youth arts organizations regularly engage a language and aesthetics of authenticity and trust as part of how they call out, represent and make a home for children and youth. This paper examines how authenticity in youth culture and youth cultural expression is negotiated by arts organizations and how organizations locate their own trustworthiness as allies of young people through the curation of online media archives.

The analysis draws on the internet media archives of two youth arts organizations in Canada’s largest English-speaking cities. The Oasis Skateboard Factory (OSF) in Toronto, ON is an extension program of the Toronto District School Board that enables participants to create their own brands and learn to run a skateboard or professional design business. ReelYouth (Vancouver, BC) started in Vancouver in 2005 as a community media empowerment project, and now delivers programs across Canada and internationally.The claims to youth authenticity articulated in each media archive reveal how authenticity and trust are negotiated ideologically by each organization and how organizations mark their ontological status, as a home from which young people can think and respond to an unjust world.

I examine how youth authenticity is produced by analyzing how discourses of youth identity, connection and trust are deployed across each archive. Whilst showcasing how authenticity is negotiated by each group, I show how the production of authenticity discourses by OSF and ReelYouth simultaneously convey a deeper reality: the way youth arts groups operate as care structures (Scannell, 2014) that offer ontological security (Giddens, 1991), and places of increasing “awareness of previously unnoticed interconnections” (Frosh, 2019, p. 16) for youth. In this way, they operate as sites of border work, places of routing from which the work of social justice can be borne.
Expression in the Virtual Public: Social Justice Considerations in Harvesting Youth Online Discussions for Research Purposes
Authors: Burkell Jacquelyn , Regan Priscilla
Published: May 2021

Information posted by youth in online social media contexts is regularly accessed, downloaded, integrated, and analyzed by academic researchers. The practice raises significant social justice considerations for researchers including issues of representation and equitable distribution of risks and benefits. Use of this type of data for research purposes helps to ensure representation in research of the voices of (sometimes marginalized) youth who participate in these online contexts, at times discussing issues that are also under-represented. At the same time, youth whose data are harvested are subject (often without notice or consent) to the risks associated with this research, while receiving little if any direct benefit from the work. These risks include the potential loss of online social community as well as threats to participant rights and wellbeing. This paper explores the tension between the social justice benefit of representation and considerations that would suggest caution, the latter including inequitable distribution of research-related costs and benefits, and the traditional ethics concerns of participant autonomy and privacy in the context of youth participation in online discussions. In the final section, we propose guidelines and considerations for the conduct of online social media research to assist researchers to balance and respect representational and participant rights or wellbeing considerations, especially with youth.
Unconventional Labour: Environmental Justice and Working-class Ecology in the New South Wales Green Bans
Authors: Bleakley Paul
Published: May 2021

The New South Wales union movement embraced the principles of heritage and conservationism in the 1970s through the imposing of “green bans” – a strategy wherein union members refused to work on construction projects that were a threat to the state’s natural or built environment. Led by radicals like Builders Labourers’ Federation leader Jack Mundey, the green bans were seen in several sectors as a departure from the traditional “Old Left” priorities of securing workers’ wages and conditions. Rather than a hard shift towards radicalism, this article proposes that the green bans were instead reflective of an already existing conservationist tradition in the New South Wales union movement. This reinterpretation is predicated on a content analysis of extant historical material such as contemporaneous news articles, personal memoirs, transcripts of political speeches and archival documents related to the policing of left-wing activism in the 1960s and 1970s. The results show that an existing tradition of engagement with a broad spectrum of social issues in the New South Wales union movement predates the emergence of the New Left, including the commitment to environmental justice principles that underpinned the green bans.
Youth and Social Media: From Vulnerability to Empowerment & Equality (Guest Editors' Introduction)
Authors: Smith Karen Louise , Shade Leslie
Published: May 2021

N/A
Класифікація трансакційних витрат суб’єктів рентних відносин
Authors: Бардаш Сергій Володимирович , Осадча Тетяна Станіславівна
Published: May 2021

Зміна економічної формації в країнах пострадянського простору обумовила перегляд ставлення до рентних відносин, а також здійснення оцінки їх ефективності. Останнє є можливим за умови врахування трансакційних витрат, що безумовно виникають в умовах рентних відносин. Наразі їх склад, і у першу чергу під час реалізації рентних відносин, залишається нерозкритим. Стаття спрямована на розв’язання означеної проблеми, а також окреслення способів відображення трансакційних витрат у системі бухгалтерського обліку. Отже, дослідження в цьому напрямі є актуальними та перспективними.

Метою статті є ідентифікація та класифікація трансакційних витрат у системі рентних відносин. Методологічною основою дослідження є діалектичний метод пізнання сутності рентних відносин та заходів щодо їх удосконалення; бібліографічний метод для ідентифікації трансакційних витрат у контексті теорій власності, інституціоналізму, агентських відносин та колабораційних альянсів як теоретичного підґрунтя реалізації рентних відносин; компаративний аналіз економічної сутності, причин виникнення та класифікації трансакційних витрат; абстрактно-логічний метод для обґрунтування основних теоретичних положень, формулювання висновків; метод моделювання для побудови класифікації трансакційних витрат суб’єктів рентних відносин.

На підставі вивчення останніх публікацій узагальнено існуючі підходи до визначення сутності трансакційних витрат, ідентифіковано багатоваріантність їх класифікації, а також розроблено класифікацію трансакційних витрат, що виникають у межах рентних відносин та яка може бути покладена в основу їх відображення на рахунках бухгалтерського обліку. Практичне значення дослідження полягає у розробці класифікації трансакційних витрат, яка спрощує їх ідентифікацію та зарахування до різних стадій реалізації рентних відносин.
Європейський досвід державного управління енергоефективністю та енергозбереженням у житлово-комунальному господарстві: уроки для сучасної України
Authors: Бізонич Дмитро Володимирович
Published: May 2021

У статті охарактеризовано енергетичну ситуацію сучасної України. Обґрунтовано необхідність підвищення рівня енергоефективності та енергозбереження у вітчизняній галузі житлово-комунального господарства та запровадження відповідного європейського досвіду. Теоретично висвітлено європейський досвід державного управління енергоефективністю та енергозбереженням у галузі житлово-комунального господарства з метою його практичного застосування у реаліях сучасної України. Змістовно розмежовано поняття «енергозбереження» і «енергоефективність». Обґрунтовано актуальність і необхідність підвищення рівня енергоефективності та енергозбереження у житловому секторі житлово-комунального господарства України. Визначено напрями європейської державної системи управління питаннями енергоощадності та підвищення енергоефективності. Наведено інструменти підвищення енергоефективності, які активно застосовуються у сучасній європейській практиці. Зазначено найпоширеніші форми державного стимулювання енергоощадності й підвищення рівня енергоефективності та енергозбереження в європейських країнах. Обґрунтовано необхідність вивчення, адаптації та застосування досвіду Федеративної Республіки Німеччина у сфері енергоефективності та енергозбереження у галузі житлово-комунального господарства (створення LEEN (Learning Energy Efficiency Networks) («навчальних мереж енергоефективності»); програми «STEP up!» – проведення відкритих, прозорих, публічних торгів у сфері енергоефективності та енергозбереження; активного стимулювання науково-дослідницької діяльності у сфері енергоефективності та енергозбереження). Охарактеризовано ситуацію щодо енергоефективності та енергозбереження у житловому секторі сучасної Німеччини. Наведено перелік заходів, що здійснюються німецьким урядом з метою заохочення споживачів до підвищення рівня енергоефективності та енергозбереження. Визначено основні засади Енергетичної стратегії України на період до 2035 року «Безпека, енергоефективність, конкурентоспроможність»
Recent advances in the use of Langmuir monolayers as cell membrane models
Authors: Pereira Andressa Ribeiro , de Oliveira Junior Osvaldo Novais
Published: May 2021

Understanding the role of biomolecules in cells at the molecular level has been the trade of Prof. Marcio Francisco Colombo and Prof. Jo�o Ruggiero Neto in their carriers, which is why it was found appropriate to address the use of Langmuir monolayers as cell membrane models in this special issue. In the review paper, we elaborate upon the reasons why Langmuir monolayers are good models with the possible control of membrane composition and molecular packing. After describing several experimental methods to characterize the Langmuir monolayers, we discuss selected results from the last five years where monolayers were made to interact with pharmaceutical drugs, emerging pollutants and other biologically-relevant molecules. The challenges to take the field forward are also commented upon.
Antioxidative activity of gold and platinum nanoparticles assessed through electron spin resonance
Authors: Kinoshita Angela , Lima Iara , Guidelli �der Jos� , Baffa Filho Oswaldo
Published: May 2021

Gold nanoparticle (AuNP) is a well-known biocompatible structure with several biomedical applications for labeling, heating, and sensing, besides delivery of drugs to cells. Similarly, platinum nanoparticles (PtNPs) have important applications in medicine. Traditional applications of these nanoparticles in medicine/biomedicine depend on their physical-chemical properties. In this work, a preliminary study of the antioxidative properties of AuNP and PtNP was performed using electron spin resonance (ESR) spectroscopy. Antioxidant activity against DPPH (1,1-diphenyl-2-picrylhydrazyl) radical was found for both nanoparticles, but the PtNP was more reactive than the AuNP to reduce the DPPH ESR signal. The decay time for the signal intensity was T = 3.1 � 0.1 min�1 for AuNP and T = 1.80 � 0.07 min�1 for PtNP.
Colon Irrigation Bowel Preparation Supports Multiple Clinical Benefits in Over 8,000 Patients
Authors:   1Austin Gastroenterology, Austin, TX, USA. 2HCA Healthcare, Austin, TX, USA.
Published: May 2021

This retrospective clinical study evaluates an FDA-cleared high-volume colon irrigation bowel prep (BP) for colonoscopy, performed under standard operating procedures with Austin Gastroenterology (AG, Austin, TX). Patient related outcomes in 8,364 procedures, prescribed by 33 physicians in 4.5 years, demonstrated no serious adverse events and excellent satisfaction rates. The high level of adequacy using this BP far exceeds national benchmarking thresholds for adequate colon preparations. Adequacy rates remain high even when considering poor BP risk factors and patient noncompliance with ancillary pre-preparation regimens. Our analysis demonstrates that this colon irrigation BP has excellent Boston bowel preparation scores (BBPS), associated with high-level adenoma detection rates (ADR) and sessile serrated polyp (SSP) detection rates. ADR and SSP are inversely related to the patient’s post-colonoscopy interval colorectal cancer (CRC) risk, and are similarly related to an inadequate BP. Both modeling data and performance characteristics strongly suggest that this colon irrigation BP is highly safe, effective, and will reduce the costs and risks related to inadequate BP. This, accordingly, leads to significantly improved quality outcomes, savings to the healthcare systems, and a reduction of the patient’s burden.
Desempenho de crotalária consorciada com milheto na produção de biomassa
Authors: Bertolino Karina Mendes , Duarte Giuliana Rayane Barbosa , Vasconcelos Gustavo Maldini Penna de Valadares e , Botrel Élberis Pereira
Published: May 2021

O objetivo deste estudo foi avaliar o desempenho da crotalária e milheto consorciados em diferentes proporções, bem como a melhor época de manejo e a combinação de consórcio para a produção de palhada. O delineamento utilizado foi o de blocos casualizados em esquema de parcela subdividida, sendo as parcelas constituídas de crotalária (Crotalaria spectabilis (CR) e milheto (Pennisetum glaucum (L.) (MI) consorciados em diferentes proporções (100% CR; 80% CR + 20% MI; 60% CR + 40% MI; 40% CR + 60% MI; 100% MI) e as subparcelas duas épocas de manejo (86 e 118 dias após a semeadura), com quatro repetições. No qual tiveram como variável resposta a altura de plantas e a biomassa seca. O índice de eficiência e uso da terra foi calculado por meio dos dados obtidos de massa seca total dos consórcios aos 118 dias após a semeadura. A melhor época para o manejo das plantas em consórcio foi aos 118 dias após a semeadura, onde se obteve a quantidade suficiente de massa seca para cobertura do solo sob sistema de plantio direto. O consórcio mais vantajoso em termos agronômicos foi o constituído por 20% CR + 80% MI.
Palavras-chave: Palhada. Crotalaria spectabilis.  Pennisetum glaucum (L.).
 
Crotalary performance consortiated with millet in biomass production
Abstract
The objective of this study was to evaluate the performance of intercropped crotalary and millet in different proportions, as well as the best management time and the combination of intercropping for the production of straw. The design used was that of randomized blocks in a subdivided plot scheme, with plots consisting of crotalary (Crotalaria spectabilis) (CR) and millet (Pennisetum glaucum (L.)) (MI) intercropped in different proportions (100% CR; 80% CR + 20 % MI; 60% CR + 40% MI; 40% CR + 60% MI; 100% MI) and the subplots two management times (86 and 118 days after sowing), with four replications. In which the height of plants and dry biomass were the variable response. The efficiency and land use index were calculated using data obtained from the total dry mass of the consortia at 118 days after sowing. The best time for the management of the intercropped plants was 118 days after sowing, where sufficient dry mass was obtained to cover the soil under no-tillage system. The most advantageous consortium in agronomic terms was the one constituted by 20% CR + 80% MI.
Keywords: Straw. Crotalaria spectabilis. Pennisetum glaucum (L.)
Bancarización en Milagro: Utilización de servicios electrónicos
Authors: Medina Hinojosa Deysi
Published: May 2021

El acceso a los servicios financieros es un tema que ha cobrado gran importancia en los últimos años en América Latina; tanto gobiernos como instituciones financieras privadas vienen planteando y desarrollando iniciativas que buscan impulsar el acceso de la población a tales servicios. Según estudios realizados, América Latina tiene bajos niveles de bancarización (utilización del sistema bancario por parte del público) en relación con América del Norte y Europa. La rápida evolución de las tecnologías de la información y comunicación ha producido enormes cambios en el ámbito social, económico y político, pues se encuentran integradas prácticamente en cada actividad de nuestra vida cotidiana; por ello es necesario estar al tanto de las innovaciones que ofrece el sector financiero ecuatoriano. El presente ensayo da a conocer los porcentajes de Bancarización en el Ecuador y la ciudad de Milagro, los riesgos y beneficios del uso de servicios electrónicos, y como se optimiza la transaccionalidad mediante la web, cajeros automáticos, call center, líneas 1800, telefonía móvil, entre otros. Finalmente, es recomendable el empleo prudente de estos recursos, pues se reduce el tiempo de espera en ventanillas y se evitan los peligros que conlleva la manipulación de dinero en efectivo.
Cifras Socio-Económicas de Milagro Lectura de Retroalimentando la información actual
Authors: Serrano Mantilla Gonzalo
Published: May 2021

Son muchos los desafíos que tienen que superar las empresas para satisfacer a consumidores actuales o conseguir nuevos clientes, por lo cual es necesario desarrollar perfiles para identificar factores que afectan la demanda actual y futura, este proceso siempre requiere analizar datos adecuados y confiables que durante muchos años al no contar con fuentes formales de libre acceso era necesario desarrollarlos o contratarlos por la propia empresa, ahora contamos con censos realizados por Instituto Nacional de Estadística y Censos (Censo Nacional Económico, VII Censo de Población y el VI de vivienda), Estudio Socioeconómico efectuado por la Universidad Estatal de Milagro Departamento de Investigación, Desarrollo Tecnológico e Innovación entre otros, lo cual permite que el estudio lo pueda efectuar cualquier interesado. Información que podría optimizar el uso de recursos a nivel nacional y de Milagro ayudando a cumplir los objetivos financieros de la organización, además diseñar e implantar estrategias nuevas e innovadoras que permitan aprovechas las oportunidades del mercado. Las conclusiones del artículo presentan información que pueden ser consideradas, sobre la base de un criterio comercial, llegando a identificar características del consumidor actual que servirían para diseñar estrategias que tienen que ir evolucionando acorde al desarrollo del mercado.
Marketing Personal con inteligencia emocional una oportunidad en el Mercado Laboral
Authors: Serrano Mantilla Hector
Published: May 2021

Este ensayo se origina en las experiencias obtenidas como docente universitario, facilitador de seminarios de Marketing personal y Coaching, así como la asimilada en el sector empresarial, se ha podido apreciar como un grupo significativo de personas teniendo un paradigma errado respecto al Marketing Personal, que lo vinculan exclusivamente a la apariencia física, no logran sus objetivos, desperdiciando excelentes oportunidades al no estar listos. Otros en cambio, a criterio del autor, toman el mejor de los caminos: el de transitar por los senderos del conocimiento de la Inteligencia Emocional; como diría Daniel Goleman (1977), “relacionarnos con nosotros mismos y con los demás” y aplicarlo estratégicamente al Marketing personal, desde una perspectiva ética, transparente; que les permite como parte de un Mercado de Recursos Humanos, lograr oportunidades en un Mercado Laboral que intensamente los busca. Se espera que el presente trabajo brinde orientación a quienes desean mejorar sus oportunidades laborales.
El Rostro Andino del Arco Iris La diversidad cultural, el desarrollo y el sumak kawsay ecuatoriano
Authors: Abad Merchan Andres
Published: May 2021

El artículo reflexiona sobre el concepto de desarrollo humano y sus dimensiones culturales. Analiza el Índice de Desarrollo Humano (IDH), el marco legal del desarrollo en el Ecuador y el concepto del sumak kawsay (conocido como el “buen vivir”), y la intrínseca relación entre diversidad biológica y diversidad cultural. Adicionalmente, analiza la propuesta de la UNESCO, que establece una batería de indicadores vinculados con el bienestar y la promoción de la diversidad cultural y creativa; finalmente, se examina el Plan Nacional del Buen Vivir 2009-2013 elaborado por la Secretaría Nacional de Planificación y Desarrollo (SENPLADES).
INFLUENCE OF SCREENING BLOCK SUPPORTING WAY ON THE BEHAVIOUR OF A SOLID PARTICLE ON AN OSCILLATING SURFACE
Authors: MOŞNEGUŢU EMILIAN , NEDEFF VALENTIN , BÂRSAN NARCIS , CHIŢIMUŞ ALEXANDRA-DANA , RUSU DRAGOŞ
Published: May 2021

This article shows a study aiming to identify the influence carried out by the supporting way of the working surface in the case of plane oscillating screening device, over the behavior of a solid particle. In order to achieve this, a theoretical study has been conducted by using a simulation program, Working Model 2D, within which two ways of supporting the screening block have been conceived: the working surface supported by tie-rods, and the surface suspended on tie-rods. Following the simulation, a series of physical parameters has been determined: the trajectory followed by the solid particle; the circuit of the solid particle during its movement on the working surface; the acceleration of the solid particle and the reaction force occurred between the solid particle and the working surface. Following the analysis of resulting values it may be noted that the best way to support the working surface, as far as the efficiency of mechanical separation is concerned, according to width and thickness of the solid particle, is obtained in the case where the working surface is supported by tie-rods, since the running time of the working surface is the highest and it is 4.12 seconds, value generating the high average moving speed; the particle’s rotation angle is from -2 rad to +4.8 rad, having as a result the amplest possible rotation.
STUDIES CONCERNING THE BEHAVIOR OF THE SUSPENDED SOLIDS IN THE MIXING PROCESS
Authors: DASCĂLU MIHAELA-ELENA , MOŞNEGUŢU EMILIAN , NEDEFF VALENTIN , CHIȚIMUȘ ALEXANDRA-DANA , BÂRSAN NARCIS
Published: May 2021

A high importance is given to the studies concerning the most reliable mixing process with a minimum of energy consumption, because the mixing process is an often used operation in various industries. The main purpose of this paper is to determine and to identify the behavior of the dispersed phase, in this case, the solid particle, during the mixing process. Through the experiment, the mixing process was recorded using a High-Speed camera, which enables following the behavior of the solid particle. The resulting data were used for different types of charts.
THEORETICAL RESEARCH REGARDING THE RISK-FREE WORK OF THE GANTRY CRANES
Authors: RADU GHEORGHE N. , COMĂNESCU IOANA SONIA
Published: May 2021

The research bases on the observation that the check imposed by the National Authority I.S.C.I.R. regarding the cranes authorization is necessary but not enough for the assurance of their work safety. The current specific rules do not contain provisions concerning the vibratory state of the cranes. Practice shows that the beginning of a work which is outside the normal parameters (changes of the optimum technical state – risk of accidents occurrence), appear in their vibratory mark. The research has as main goal the increase of the work safety and the elimination of the risk of accidents.
EXPERIMENTAL STUDIES REGARDING THE RISK-FREE WORK OF THE GANTRY CRANES
Authors: RADU GHEORGHE N. , COMĂNESCU IOANA SONIA
Published: May 2021

The present paper sets that the prerequisite of a crane’s failure (changes of the optimum technical state – risk of accidents occurrence), appear in their vibratory mark. The research has as main goal the increase of the work safety and the elimination of the risk of accidents. The tests had in view both the truss answer to dynamic forces in wind-bracings and the dynamic regime of the main beam.
EVALUATION OF WATER POLLUTION STATUS IN BAHLUI RIVER (IASI TOWN AREA) DUE TO DOMESTIC AND URBAN WASTEWATER TREATMENT ACTIVITIES
Authors: ZAHARIA CARMEN
Published: May 2021

This study presents some data about the water pollution status of Bahlui river in Iasi town area (two control sections) mainly due to domestic and urban wastewater treatment activities, considering especially some quality indicators (i.e. nitrogen-based nutrients, total phosphorus and sum organics content) evaluated for 2009-2010. The Bahlui water classification by European standards in Iasi town area corresponds to ‘medium’ (WQI = 53.893 - 64.345). The real water pollution state of Bahlui river (Iasi town area) is estimated by the global pollution index (I*GP), and corresponds to values of 2.80-2.929 (Valea Lupului-Iasi control section), and 3.030-3.196 (Holboca control section, i.e. downstream of Dancu wastewater treatment plant). These values are indicating an aquatic environment modified by domestic and urban wastewater treatment activities, generating discomfort effects, or producing stress against aquatic life forms. These data are recommending application of hydro-ameliorative/remediation actions, and permanent control of Bahlui watercourse quality in all existing control sections.
OPINIONS ABOUT ALLOTTING STRAINS ON THE LAYERS OF A LAMINATED MONOLITH COMPOSITE
Authors: IATAN RADU , PAVEL FLORESCU , ENĂCHESCU GEORGIANA LUMINIŢA , TOMESCU GHEORGHIȚA
Published: May 2021

A previous paper stated the method of determination of the neutral surface of a composite monolithic, laminate composite, organizing some of the component layers, go to the method of distribution of tasks developed in one given case. This regard illustrates several possible options of which results can enable a proper assessment of the maximum strains and alignment layers, ensuring a maximum lifting capacity. The study can be developed to optimize the organization of layers, depending on the practical purpose of using the composite structure (mechanical, thermal and / or sound).
EVALUATION OF THE GROUNDWATER QUALITY IN A CLOSED INDUSTRIAL LANDFILL
Authors: ISSAKA SENOU , BÂRSAN NARCIS , NEDEFF VALENTIN , ANTOINE SOME N. , BISMARCK NACRO H.
Published: May 2021

The study parameters: pH, conductivity, salinity, Total Dissolved Solids (TDS), Turbidity, Total Suspended Solids (TSS) and Chemical Oxygen Demand (COD) of groundwater in a closed industrial landfill, subject to the waste discharges of city of Bacau (East Romania), shows that the water quality of the different sampling points is variable. This difference is noted at the level of conductivity, TDS, turbidity, TSS and COD. These differences, however parameters are substantially higher compared the value of the legislation in groundwater Romania. Salinity remains relatively high at the point of sample P1 (0.7). The pH values are comprising in the range of reference values (6.5 to 7.4). The results also showed very strong correlations (r> 0.8) between Conductivity-Salinity, Conductivity -TDS, Salinity, TDS, Turbidity.-TSS, COD and TSS-Turbidity-COD. The strong correlation (0.5 0.8) were noted between Turbidity- Conductivity, Turbidity-Salinity, Turbidity, TDS, TSS conductivity, TSS-Salinity, TSS, TDS, COD, conductivity, salinity, COD, COD-TDS. Principal Component Analysis (PCA) also highlighted groundwater mineralization events of this landfill and possible pollution by organic matter.
COMPARATIVE ASSESSMENT OF ROAD RATING SYSTEMS
Authors: ADERINLEWO OLUFIKAYO
Published: May 2021

In this study, three road rating systems were assessed and compared after carefully applying them to five major road case studies. The essence of these rating systems is to provide a consistent, reasonably objective and systematic approach for establishing priorities and scheduling and budgeting roadway rehabilitation requirements. The effectiveness of these systems was measured during the road condition survey and compared with one another. The most effective system out of the three was determined based on the different types and severity levels of pavement distresses identified for the five different routes.
TEORETHICAL EVALUATION OF ANTHROPOGENIC RISKS IN TAZLAU RIVER BASIN
Authors: BIBIRE LUMINITA , BARBIERU MIHAELA-BEATRICE , BARSAN NARCIS , GHENADI ADRIAN STELIAN
Published: May 2021

In the Tazlau Basin there was a really strong anthropogenic impact. Many areas have almost totally been deforested, the grazing and agriculture have extensively and irrational been practiced, underground reserves have been exploited, too etc. The expanding of settlements along the rivers and building of modern communication routes along beds favored the phenomena of flooding and destruction of hydraulic works. These all aspects led to frequent occurrence of risk events: erosions, landslides, degradation of the rivers beds, pollution of air, water, vegetation, soil, etc. The paper identifies anthropogenic risk factors from Tazlau Basin, and proposes analyzes of the consequences and the measures to avoid these ensuing consequences.
DETERMINATION OF THE REAL VALUES OF KINEMATIC INDEX CORRESPONDING TO THE MECHANICAL SEPARATION PROCESS
Authors: MOȘNEGUȚU EMILIAN , NEDEFF VALENTIN , PANAINTE-LEHĂDUȘ MIRELA , BÂRSAN NARCIS , CHIȚIMUȘ DANA , RUSU DRAGOȘ
Published: May 2021

This article presents the methodology for determining the real values of kinematic indices which characterizes the mechanical separation of a mixture of solid particles. Mechanical separation of a mixture of solid-solid on surface provided with holes is the most common method of separation. To optimize equipment that performs this operation, both theoretical and practical characteristics are determined. Kinematic indices are part of the theoretical characteristics, helping to identify behavior of solid particles on a surface flat swing. Starting from an experimental batch, real values of the kinematic indices corresponding to up, down and sideways movement on the sieve were determined for the following types of real particles: grain, large grain beans, small grain beans and soybeans.
INFLUENTIAL PARAMETERS DURING PRESSURE RELIEF EXPOSED IN WORKING CHAMBER OF HYDRAULIC CYLINDER PRESS
Authors: ŽIVKOVIĆ MILUTIN
Published: May 2021

Relieving volumes, which were under pressure, with all the controls on the distribution and management of oil supply, may lead to the occurrence of the hydraulic impact, which is especially distinct in hydraulic presses. For these reasons, high speed unloading compression volume is the main cause of this phenomenon. This paper provide practical guidance for the design and calculation of important design parameters usually embedded devices - hydraulic command check valves (HCCV) (nominal size, pressure and decompression time) and the possibility of determining performance requirements using, from literature, the expressions and the nomograms.
RESEARCH ON SINGLE-LEAF WALLS MADE WITH LIGHTENED CLAY BRICKS
Authors: JUÁREZ MANUEL C. , MORALES Mª PILAR , MUÑOZ PEDRO , OLASOLO PABLO
Published: May 2021

This paper explains the studies conducted on the subject by RADEB (Research and Development in Energy and Buildings) Research Group at the University of La Rioja. The aim of this work is to study the possibility of improving the thermal transmittance of a single-leaf wall made with lightened clay bricks. A first aspect is to study the possibility of lightening the clay by using additives, reducing the clay’s conductivity without decreasing its resistive ability. The internal and external geometry of the bricks has been studied by the Finite Element Method (FEM). Different wall assemblies with these bricks have been studied.
NUMERICAL ANALYSIS OF EFFECTS OF HYDRAULIC GRADIENT ON MASS FLUX OF SALTWATER INTRUSION IN COASTAL AQUIFERS
Authors: ADEGOKE JAMES A. , POPOOLA OLATUNDE I. , FALUY OLUDOTUN O.
Published: May 2021

Coastal aquifers are distinguished from other aquifers because of saltwater intrusion effects, which cause contamination of groundwater in coastal regions. This study addressed the significance of hydraulic gradient and porosity of the coastal aquifers on contaminant transport of saltwater. Results showed hydraulic gradient of the aquifer has significant impact on the contaminant transport in coastal aquifer. When the hydraulic gradient between freshwater and saltwater is high and directed toward the sea, diffused rate of saltwater into the groundwater would be low. Therefore, hydraulic head of freshwater in coastal aquifer must be maintained at high level to control saltwater intrusion.
DETERMINATION OF BACKPACK MASS LIMIT FOR STUDENTS IN A UNIVERSITY IN ABEOKUTA, SOUTHWESTERN NIGERIA
Authors: ISMAILA SALAMI OLASUNKANMI
Published: May 2021

The aim of this study was to use the Froude number to determine the mass of the backpack that a student should carry in tertiary institutions. A model was developed using the Froude number with leg length and power of the students as inputs. It was established that a student in tertiary institutions should carry a backpack with a mass of at most 10 % of the body mass. Similar studies are recommended for primary and secondary schools.
TOWARDS IMPLEMENTATION OF INNOVATIVE METHODOLOGIES IN CONSTRUCTION ENGINEERING IN CHILE. A CASE STUDY
Authors: MUÑOZ PEDRO , LETELIER VIVIANA , BIBIRE LUMINITA , MUÑOZ LUIS
Published: May 2021

The demands of society are changing rapidly, which in turn enhances the need to prepare qualified professionals with up-dated skills and competencies. Due to this fact, universities must be able to develop new teaching strategies which should be focused, not only in the curricula, but on teaching methodology. This paper shows an experience, developed for the subject matter of electrical installations within the Construction Engineering degree of the Autonomous University of Chile. The aim is to show a Project-Based Learning model using cooperative as well as collaborative strategies, while taking into ac-count both the particular situation of higher education in Chile and the socio-cultural factors of students. The methodology and tools used for its implementation are described and related to obtained results within the Chilean context. It concludes that this teaching method contributes with learning enhancement in terms of strengthening of technical and transversal competencies, while also resulting in a significant improvement of grades, as well as a marked reduction in the absenteeism rate.
STUDIES ON THE APPLICATION OF HOLLOW FIBER MEMBRANES IN THE FIELD OF ULTRAFILTRATION
Authors: TATARU LAURENȚIU , NEDEFF VALENTIN , BARSAN NARCIS , PANAINTE-LEHADUS MIRELA , MOSNEGUTU EMILIAN , CHITIMUS DANA-ALEXANDRA
Published: May 2021

This study is a review of knowledge and understanding of organic fiber membrane behavior in wastewater ultrafiltration processes. Current research is increasingly focusing on the use of state-of-the-art technologies for the elimination of pollutants in water and the use of membranes. This study focuses on testing hollow fiber organic membranes for the ultrafiltration process as a precursor to osmosis processes. The major advantages of ultrafiltration are the elimination of many small organic and inorganic compounds from the water, which cannot be eliminated in microfiltration processes, offering superior quality water. This review highlights the effectiveness of organic membranes from hollow fibers in relation to the dependence between filtering parameters and those related to the membrane type structure, respectively the membrane structure of the polyacrylonitrile. The results of the study on the testing of such membranes have shown that filtration efficiency increases inversely with the degree of fouling on the surface of the membrane; the permeate quality being superior in the early stages of the membrane lifecycle, decreasing with increasing use time. In other words, the aging of the membrane decreases the volume of the permeate and at the same time changes the dependence of the parameters: pressure, temperature, flow if it is desired to obtain the same amount of permeate. Finding the best solutions for streamlining the membrane structure and running under the best conditions will be presented in the current paper.
NITRATO ADDUCTS AND DERIVATIVES: SYNTHESIS AND INFRARED STUDY
Authors: DIOP MOUHAMADOU BIRAME , DIOP LIBASSE
Published: May 2021

Five new nitrato adducts and derivatives have been synthesized and studied by infrared spectroscopy. The suggested structures are discrete or of infinite chain type, the nitrate behaving as a bidentate or a monodentate ligand, the environment around the tin (IV) centres being octahedral or trigonal bipyramidal. When extra hydrogen bonds are considered supramolecular architectures may be obtained.
EMISSIONS MONITORING OF HEAVY METALS AND THEIR COMPOUNDS RESULTED FROM COMBUSTION PROCESSES IN CLINKER KILNS IN ROMANIA
Authors: CIOBANU CRISTIAN , VOICU GHEORGHE , TOMA MAGDALENA – LAURA , TUDOR PAULA
Published: May 2021

With the dust arising from the clinker kilns and grill coolers (the major pollution sources in a cement plant), also heavy metals and their compounds (in the form of powders and vaporous), originating from fuels and raw materials, are pumped into the air. The paper presents some aspects regarding the monitoring of heavy metals contained in the combustion gases from a Romanian cement factory. The fuels used in the incinerator varied from coal/petroleum coke, refuse oils (from waste oils and their emulsions, up to sludge, paraffin, tars, contaminated soil), rubber (including whole used tires), plastic, paper, leather, textiles, wood (including sawdust), as such or impregnated/contaminated with various substances from industrial sources or sorted household wastes, sludge (previously dried) from wastewater treatment plants. In addition, the list of over 100 types of waste that can be co-processed can be found in integrated authorizations of cement plants. However, the level of heavy metals in the combustion gases was in allowed limits.
DEARYLATION IN THE INTERACTIONS BETWEEN (Et3NH)HC2O4 OR (Et3NH)2C2O4 AND SnPh3Cl: INFRARED STUDY
Authors: SECK GORGUI AWA , DIOP LIBASSE , SENE ABOUBACARY
Published: May 2021

Five new oxalato, hydrogenoxalato and hydrogenocarbonato adducts (three) and complexes (two) obtained on allowing (Et3NH)HC2O4 or (Et3NH)2C2O4 to react with SnPh3Cl have been studied by infrared spectroscopy, then discrete structures suggested on the basis of spectroscopic data. The anions behave as monochelating ligands, the environments around the metallic centres being octahedral. In two of the compounds, the benzene molecules obtained in situ are lattice. In all these structures when considering the cation involved in extra hydrogen bonds, a supramolecular architecture may be obtained.
LABORATORY APPLICATIONS IN WASTEWATER TREATMENT BY USING FLOCCULATION PROCESS
Authors: BARSAN NARCIS , TURCU MARIANA , NEDEFF VALENTIN , MOSNEGUTU EMILIAN , CHITIMUS DANA
Published: May 2021

In the application of coagulation and flocculation process in the wastewater treatment, the laboratory activities are very important and sometime even indispensable. These activities provides some solutions to the efficiency that can be obtained and offer the possibly of results extrapolation to the industrial applications. The present study attempted to verify some possible laboratory application of the Acefloc organic flocculants series to the municipal waste leachate treatment. In these sense, some laboratory techniques were implemented to evaluate de flocculants efficiency by analyzing some quality parameters. In the case of Acefloc 00303L flocculants use were obtained the best performances regarding the analyzed quality indicators reduction. By using the flocculation process, the COD concentration decrease with 85.35 % in the case of Acefloc 00303L flocculants use
MODELING AND OPTIMIZATION OF BAKERY YEAST (SACCHAROMYCES CEREVISIAE) VIABILITY BY USING EXPERIMENTAL DESIGN PROCEDURE
Authors: GEORGESCU ANA-MARIA , RADUCANU DUMITRA
Published: May 2021

This paper presents the application of kn experiment design procedure for simulation and optimization of growth capacity for baker’s yeast, Saccharomyces cerevisiae. There were performed 27 experiments according to the experimental design procedure. The input variables were: the amount of carbohydrates (X1), temperature (X2) and pH (X3) and the output variable was the autolyzed cells (Y). The optimal conditions for growth parameters of Saccharomyces cerevisiae were obtained for an amount of carbohydrates (glucose) of 46.8 g·L-1, a temperature of 30oC and a pH of 5.7.
ORIENTATION SYSTEM OF PV PANELS AFTER SUN
Authors: HOLMAN GEORGE EDUARD , AFANASOV CIPRIAN
Published: May 2021

The purpose of the project is create a PV panels orientation system after the sun, with return to home position when dark is coming. The system must be energetically autonomous, and also have the ability to constantly provide power. The orientation of photovoltaic panels is an important factor that we must take into account in the design of energy production systems based on solar radiation. Solar guidance systems increase the efficiency of the power generation system by keeping the panels in a position perpendicular to the light rays. The two-axis orientation method was used. The wiring diagram has been designed so that the guidance system works in both manual and automatic modes. For the system to be energy-independent and, linked to the power supply of the drive motors for the two axis, we used a MPPT charger for the battery used as a energy source. Finding the best solutions for increasing system efficiency and energy independence will be presented in this paper.
INDUCED DEGRADATION OF CRUDE OIL POLLUTED SOIL BY MICROBIAL AUGMENTATION
Authors: UWADIAE SYLVESTER , OMOAYENA EMIKE
Published: May 2021

This study was aimed at assessing the effectiveness of indigenous microbes for remediation of hydrocarbon contaminated soil by first increasing the population of the indigenous microbes via bioaugmentation. Soil samples were treated using a consortium of bacteria: Bacillus substilis and Pseudomonas sp. which were isolated and cultured from the contaminated soil. The non-bacteria injected soil sample had the highest hydrocarbon content (THC) of 271.021 in comparison with the other soil samples. The THC percentage removal of B1 (96.885 %), B2 (97.562 %), B3 (98.835 %), B4 (99.594 %) and B5 (99.540 %) were higher than that of the control; indicating that biodegradation actually took place.
MAPPING OF SALTWATER INTRUSION AT IGBOKODA, SOUTHWESTERN, NIGERIA USING COMBINED GEOPHYSICAL AND CHEMICAL TECHNIQUES
Authors: ADEGOKE JAMES , IGBOAMA WILFRED , ADETUWO EMMANUEL
Published: May 2021

This research work was set out to map saltwater intrusion in Igbokoda area of Ilaje, Ondo State, Southwestern, Nigeria using combined geophysical and chemical techniques. Eight (8) Vertical Electrical sounding were carried out using the Schlumberger Electrode array system with maximum spread of (AB/2) 133 m and water samples were acquired and analysed using atomic absorption spectrometer. The VES data was interpreted by the method of partial curve matching and computer iteration technique using Winresist software. The result obtained revealed four geoelectric layers. The saltwater intrusion originated from movement of seawater into the freshwater aquifer coupled with human activities.
ANALYSIS OF USING DIGITAL LEARNING MATERIALS IN ENGINEERING LABORATORY COURSES
Authors: GEORGIEVA TSVETELINA , GUEORGUIEV TZVETELIN , KADIROVA SEHER , EVSTATIEV BORIS , MIHAILOV NIKOLAY
Published: May 2021

The paper presents an analysis of the use of digital learning materials in engineering laboratory courses. Interviews have been conducted with lecturers from several engineering faculties of the University of Ruse ‘Angel Kanchev’, such as: the Faculty of Electrical Engineering, Electronics and Automation, the Faculty of Transport, and the Faculty of Mechanical and Manufacturing Engineering. The aim of the interviews is to investigate the capacity and understanding of the lecturers in respect to using digital learning materials in laboratory courses. The obtained results demonstrate that digital learning materials are perceived as a useful tool to achieve better engagement of students in the educational processes. This would require continuous additional efforts by the teaching staff and permanent updating of their specific and digital competences.