bluuebunny/crossref_metadata_2025 huggingface dataset:
Sociodemographic profile and the associated factors of chronic otitis media in rural areas of eastern Nepal
Authors: Thakur Sanjeev Kumar , Singh Sanjay Kumar , Acharya Rabin , Anwar Afaque , Ghimire Nisha
Published: February 2017

Background: Otitis media is one of the commonest infections in children. The present study was aimed to determine the sociodemographic profile and the associated factors of chronic otitis media along with the health related practices and beliefs among the family of rural children with otitis media in Morang district of eastern Nepal.

Methods: This cross sectional study was done over one year in different ear camps conducted in the various rural areas of Morang district of eastern Nepal. The attending guardians of the children with chronic otitis media were interviewed according to the pretested questionnaire regarding their socioeconomic status, health related practices, beliefs and other related issues. All the collected data were tabulated and analyzed.  

Results: A total of 102 attendants were interviewed. Most of the attending guardians were from low socioeconomic status with majority from medium sized family (4-7 persons). Most of them were illiterate. Most of the children lived in Kachha house. Inspite of only nearly 40% family having latrine, sanitation habits were satisfactory in above 80%. 53.92% of the children with chronic otitis media used to take bath in ponds and lake. Most of the guardians had the habit of cleaning ears in unsafe way. Nearly, a third of the guardians were not aware about importance of head position during breast feeding. Most of the guardians were not aware about the causes and treatment of otitis media. In case of ear discharge, most of them seeked help in health institutions. 14.7% would rely on house hold remedies like oil, herbs instilled in to ears and 2.94% would go to faith healer. However 75.5% of the attendants perceived that the use of antibiotics was the method to treat otitis media.

Conclusions: The prevailing chronic otitis media in rural children is associated with several risk factors. The lack of appropriate knowledge, perception and erroneous practices stresses the importance of specific health education to the population. Early detection and preventive programs for better ear care can possibly help to alleviate this burden of chronic illness in the society. 
Evaluation of Results of Rehabilitation After Childrens Cochlear Implantation in Voronezh Region
Authors: Petrova Irina Pavlovna , Balashova E. A. , Tavartkiladze G. A.
Published: February 2017

Единственным методом реабилитации больных с тотальной глухотой является кохлеарная имплантация (КИ). Для улуч-шения качества реабилитации проимплантированных пациентов разработана система поддержки принятия решения(СППР) на основе искусственных нейронных сетей (ИНС).Цель исследования: повышение эффективности отбора кандидатов на КИ, улучшение качества реабилитации проим-плантированных пациентов, определение прогностических критериев КИ с помощью искусственных нейронных сетей.Материалы и методы. Исследование проведено у 110 детей в возрасте от 10 месяцев до 17 лет. Всем пациентам про-ведено клиническое и аудиологическое обследование, а также психолого-педагогическое тестирование на основе тестовНоттингемского имплантационного профиля. Для обработки результатов тестов применялись стандартные статисти-ческие методы и математическое моделирование (создание системы искусственных нейронных сетей).Результаты и обсуждение. Для классификации состояния пациентов до КИ и через 3, 6, 12, 18 и 24 месяца после КИ былапостроена самоорганизующаяся нейронная сеть и получена четырех кластерная структура данных. В зависимости отсредних значений тестов каждому кластеру было присвоено имя и проведен анализ возрастного состава и наличия опытаслухопротезирования на момент операцииВыводы. Влияние возраста на результаты КИ неоднозначно. У детей, оперированных в возрасте старше 5 лет возможныхорошие результаты реабилитации. Опыт слухопротезирования до КИ положительно влияет на результаты КИ. Ис-пользование системы искусственных нейронных сетей целесообразно для определения прогноза результатов КИ на любомэтапе реабилитации.Ключевые слова кохлеарная имплантация, искусственные нейронные сети, реабилитация
A New Method of Treatment Achalasia II-III Stage. Experimental Substantiation
Authors: Koshel Andrey Petrovich , Alekseev Vladimir Aleksandrovich , Klokov Sergey Sergeevich , Zavialova Marina Victorovna , Ryzhova Ekaterina Andreevna , Siuhina Svetlana Aleksandrovna , Vorobiev Vladimir Maksimovich , Avhimenko Viktor Aleksandrovich
Published: February 2017

Цель исследования Улучшение непосредственных и отдаленных результатов лечения ахалазии кардии II - III стадиипутем экспериментальной разработки и внедрения в клинику нового способа хирургического лечения ахалазии.Материалы и методы Разработан в эксперименте новый способ хирургического лечения ахалазии кардии II-III стадиипутём циркулярного удаления серозно-мышечного слоя кардиального отдела пищевода и формирования арефлюксногомеханизма в области кардиоэзофагеального перехода. Методика формирования искусственного кардиального клапанаотработана на 20 кроликах породы шиншилла обоего пола весом 5-10 кг. Исследование анатомии антирефлюксного кла-пана изучали с помощью метода замораживания изолированного органа согласно канонам «ледяной анатомии» по Н.И.Пирогову (1851) в модификации А.А. Сотникова и И.Б. Казанцева.Результаты и их обсуждение Клапан представлен как циркулярная складкаслизистого и подслизистого слоёв. По ре-зультатам экспериментального исследования показано, что сформированный инвагинационный клапан сохраняет своюструктуру во все сроки наблюдения, не препятствуя естественному пассажу пищи. Осложнений, связанных с предлагае-мой методикой в раннем и отдаленном послеоперационном периоде не выявлено.Заключение Предпринятый вариант оперативного вмешательства способствует формированию на границе пищеводаи желудка своеобразной антирефлюксной структуры сохраняющей свою анатомическую состоятельность во все срокинаблюдения.Ключевые слова ахалазия кардии, эксперимент, оперативное лечение
Obraz starości demograficznej w krajach UE a stan zdrowia jej mieszkańców
Authors: Janiszewska Anna
Published: February 2017

W krajach UE 28 obserwujemy od wielu lat starzenie się ludności. Jest to proces zróżnicowany przestrzennie. Powiększanie się odsetka ludzi starych nie pozostaje bez wpływu na sytuację zdrowotną społeczeństw. Wśród czynników wpływających na jakość życia ludzi starych, ich stan zdrowia jest elementem bardzo istotnym, związanym z potrzebą subiektywnego odczuwania satysfakcji ze swojego pełnego potencjału zdrowotnego i pełnienia aktywnego życia społecznego. Celem opracowania jest zaprezentowanie wybranych aspektów procesu starzenia się ludności krajów unijnych oraz wybranych aspektów zdrowotnej charakterystyki mieszkańców powyżej 65. roku życia w krajach unijnych.
Percepcja zagrożeń społeczno-przestrzennych w mieście a subiektywne ryzyko wiktymizacyjne i zachowania obronne osób w wieku powyżej 60 lat
Authors: Mordwa Stanisław
Published: February 2017

Przestrzeń miasta może być źródłem różnych zagrożeń, które oddziałują na poziom poczucia bezpieczeństwa jego mieszkańców. W artykule dokonano analizy różnych aspektów zachowań obronnych mieszkańców, które podejmowane są jako skutek percepcji różnorodnych i zróżnicowanych przestrzennie zagrożeń występujących w Łodzi oraz subiektywnego ryzyka wiktymizacji odczuwanego przez osoby w wieku senioralnym. Zachowania obronne mieszkańców w przestrzeni miasta, są bowiem reakcją na realne bądź percypowane zagrożenia tam występujące.
Use of Social Media in Uncovering Information Services for People with Disabilities in China
Authors: Wang Wenke , Wu Yen Chun Jim , Yuan Chih-Hung , Xiong Hongxia , Liu Wan-Ju
Published: February 2017

The tangible and intangible needs of people with disabilities have been neglected in research agendas over the past decades, particularly in China. Bringing more benefits to people with disabilities and combining information delivery with Internet technology to improve their quality of life is impossible if their special needs are ignored. This study employed the crowdsourcing through social media method to investigate information needs of people who are disabled. The results indicate that using the popular social media platforms WeChat and QQ can be an effective means of reaching out to this group. Information needs can be mainly divided into internal and external needs. Leisure, tourism, and entertainment as well as assistive devices are major internal information needs, whereas work, entrepreneurship, and living services are the main external information needs.
A Computational Method for Enabling Teaching-Learning Process in Huge Online Courses and Communities
Authors: Mora Higinio , Ferrández Antonio , Gil David , Peral Jesús
Published: February 2017

Massive Open Online Courses and e-learning represent the future of the teaching-learning processes through the development of Information and Communication Technologies. They are the response to the new education needs of society. However, this future also presents many challenges such as the processing of online forums when a huge number of messages are generated. These forums provide an excellent platform for learning and connecting students of the subject, but the difficulties in following and searching the vast volume of information that they generate may produce the opposite effect. In this paper, we propose a computational method for enabling the educational process in huge online learning communities. This method analyses the forum information through Natural Language Processing techniques and extract the main topics discussed. The results generated improves the management of the forums, increases the effectiveness of the teachers’ explanations and reduces the time spent by students to follow the course. The proposal has been complemented with a real case study that shows promising results.
Properties of Teacher Networks in Twitter: Are They Related to Community-Based Peer Production?
Authors: Macià Maria , García Iolanda
Published: February 2017

Teachers participate in social networking sites to share knowledge and collaborate with other teachers to create education-related content. In this study we selected several communities in order to better understand the networks that these participants establish in Twitter and the role that the social network plays in their activity within the community, especially related with peer production. We analyzed the topology of these networks in two ways: a) the indirect relations by counting followers and followed people; and b) the conversational networks by counting mentions in tweets. We also analyzed the communities’ websites in order to elucidate whether their production was lightweight or heavyweight peer production. Results indicate that teacher networks adopt a community clusters archetype in which some teachers act as bridges between several groups. Although these networks do not form a tight crowd, their degree of tightness is superior to that of the general networks established in Twitter. Our results also indicate that the degree of tightness is important for sustaining heavyweight peer production and strong leadership can play a crucial role in establishing long-term commitment to a collective task. 
Kajian Vaksin Avian Influesa (AI) pada Ayam Buras dengan Sistem Kandang Kurung di Gunung Kidul Yogyakarta
Authors: Suwito W. , Supriadi Supriadi , Winarti E. , Primatika R. A.
Published: February 2017

Avian influenza (AI) is highly pathogenic desease in local chicken. Avian influenza (AI)
vaccine is one of choice to prevent AI desease. The purpose of these study was to determine the effectiveness of AI vaccine in local chicken at the enclosure cage system in Gunung Kidul, Yogyakarta. A total of 110 local chicken consist of 100 hen and 10 cock were used in these study. The chicken was stored in cage of bamboo that have a measurement of 5 x 4 m2 include 10 hen and 1 cock in cage respectively. The vaccine used in these study was 2 kinds of commercial AI vaccine (A) and local AI vaccine (B). Vaccine with 0.5 ml dose was administrated by intramuscular (i.m) in 55 local chicken respectively. Re-vaccination was administrated after 2 month first vaccination. Examination of antibody titer AI was performed at month 2, 3, 4, 5 and 6 with chicken blood sampling collection via the brachial vein in the wing. Avian influenza vaccine commercial A and local B were protective in local chicken with enclosure cage system after 2 month vaccination and followed by booster.
Key words: Avian influenza (AI), vaccine, local chicken
Implementation of Good Corporate Governance at the Backdoor Listing Prosedur as Means of Business Development in Indonesia Stock Market
Authors: . Yudho Taruno Muryanto, . , . Anisa Dwi Wulandari .
Published: February 2017

Developments in the field of capital markets encourage the emergence of various corporate actions to obtain benefits such as a public company. One of the emerging corporate actions which have been done is Backdoor Listing. Regulations in the capital market is generally allowed backdoor listing. Backdoor Listing procedure are often executed in Indonesia are as follows: (1) The acquisition of control of a public company by private company through the rights issue (2) the acquisition of private company by an public company that has an affiliate relationship with the private company into standby purchaser/ new controllers. Study fulfillment of the Good Corporate Governance principles in the backdoor listing procedure is known that this procedure is still not met the Principles of Transparency, Accountability, as well as fairness and equity. It is needed to establish the rules of providing transparency obligation to assess the feasibility of a new public company controller.

Keywords: Good Corporate Governance, Stock Market, Backdoor Listing
Method of Planning Tool Postures for Deep Groove Machining of Complex Shapes – Development of an Automatic Planning Method that Considers the Motions of the Rotational Axis when the Tool Reverses Direction in Grooved Shapes –
Authors: Ichikawa Kohei ,   Saitama University, Kaneko Jun’ichi , Hasegawa Masanobu , Iwasaki Takayuki , Horio Kenichiro ,   IHI Corporation, Yokohama, Japan
Published: February 2017

Simultaneous 5-axis control machining is used to machine components in complex, deep grooved shapes. In order to maintain actual feed rates in this kind of machining, it is vitally important to secure continuity in the movement of the rotational axis. When the tool reverses its direction of travel, however, its axis of rotation is liable to make sudden movements. In this study, therefore, we first derive candidate tool postures that can meet the conditions for relative postures to machined surfaces while avoiding tool interferences. We then develop a method for automatically planning continuous changes in the command values of the rotating axial angles in the machine coordinate space.
Machining Process Evaluation Indices for Developing a Computer Aided Process Planning System
Authors: Koremura Kenta ,   Tokyo University of Agriculture and Technology, Inoue Yuki , Nakamoto Keiichi
Published: February 2017

In the manufacturing industry, there is an urgent need to shorten the manufacturing lead time of products. Therefore, optimizing process planning is essential to realize high efficiency machining. In this study, in order to develop a computer aided process planning (CAPP) system using previously proposed machining features, a prediction method for some process evaluation indices is proposed. Many candidates for the machining process exist, depending on the recognized machining features in a previous study. Therefore, by using these indices, operators can select a suitable process from among these candidates according to their ideas. Case studies of process planning are conducted to confirm that the operator’s strategy affects the selection of the machining process candidates. From the case study results, it is found that the proposed process evaluation indices have potential use in determining the machining process utilized, and are suitable for a flexible CAPP system of multi-tasking machine tools.
Decision Method of Target Shape Position and Orientation Corresponding to Actual Objects
Authors: Shimada Naoya ,   Tokyo University of Agriculture and Technology, Nagashima Noboru , Nakamoto Keiichi
Published: February 2017

Multi-tasking machine tools are popular owing to properties such as high flexibility and productivity. It is essential for an operator to avoid collisions between the machine structure and workpieces as machine tools realize complicated motions. Thus, a machine simulator is widely used prior to machining operations to solve this problem. However, unexpected collisions often occur in a commercial machine simulator when the setup of a workpiece or a jig differs from the 3D models created in advance. Therefore, this study proposes a machine simulator that utilizes 3D models created by measuring the shape and position of the workpiece and jig on the machine tool. In a case in which the workpiece differs from the desired workpiece, it is necessary to determine a suitable position and orientation of the target shape based on the obtained objects to modify NC (Numerical Control) programs. In this study, a decision method of the position and orientation of target shape is devised such that it corresponds to actual objects obtained by on-machine measurement.
Laser-Assisted Milling of Zirconia with Systematically Determined Machining Conditions
Authors: Kizaki Toru ,   Department of Mechanical Engineering, School of Engineering, The University of Tokyo, Ito Yusuke , Sugita Naohiko , Mitsuishi Mamoru
Published: February 2017

Yttria-stabilized tetragonal zirconia polycrystal (Y-TZP) is a promising material for dental restoratives. Although grinding or polishing with diamond tools is widely used to machine Y-TZP, the processing efficiency and cost of the process are problematic. In this study, we applied laser-assisted machining (LAM) to Y-TZP, in which non-diamond tools were used. Unlike LAM applied to other materials, decrease of the fracture toughness at elevated temperatures which is a unique feature of the Y-TZP was adopted as a key mechanism for machinability enhancement. In addition, a systematic method to determine the LAM conditions was proposed. In this study, we explain the LAM condition-determining method, which is based on numerical simulations of the temperature distribution. Secondly, the determining method was evaluated through a series of LAM experiments to obtain the appropriate LAM conditions. Using the determined conditions, LAM of Y-TZP was demonstrated to be effective; the thrust force was reduced by 51.3% and the tool wear was significantly reduced, while no cracks formed on the Y-TZP.
Numerical Analysis of Temperature Change in Sandwich Structure During Laser Sealing
Authors: Chiba Akira ,   Department of Mechanical Engineering, Chiba University, Matsusaka Souta , Hidai Hirofumi , Morita Noboru
Published: February 2017

Numerical analysis revealed the thermal behavior during the laser joining of two glass plates using a low melting point glass frit as an adhesive. The proposed model is a structure consisting of a straight line glass frit sandwiched between glass plates. The numerical solutions of three associated heat equations were provided by the finite difference method. The constant heat flux model predicted the temperature at the contact interface between the glass frit pattern and the glass plate. The influence of heat source shape on temperature distribution was compared using circular and elliptical beams. Irradiation with the elliptical beam extended the softening domain of the glass frit pattern further than the circular beam. The increase in softening domain depended on the major diameter of the elliptical beam. Thermal diffusion had no influence on the glass plate domains at distances greater than 1 mm from the edge of the glass frit pattern. Laser frit sealing is an effective means of resolving the issue of heat influence on electronic devices.
Environment and Resource Challenges Faced by Early Childhood Development Centres in Gweru Urban High Density Suburbs
Authors: Mupondi-Masuka Grace Sibusisiwe , Nyika Richard , Kangai Phebion
Published: February 2017

The aim of the study was to analyse the resource and environment challenges faced by Early Childhood Development (ECD) centres within Gweru Urban high density suburbs. Availability of resources and quality of the environment are crucial components in the holistic development of all children (Bruce, 2004). This study sought to establish the specific nature of resources and environment challenges currently faced by ECD centres in the Gweru urban high density suburbs. In order to establish the dimensions and nature of this phenomenon, the study adopted the mixed method approach which used interviews, questionnaires, observations and document analyses to collect data. Six (6) ECD administrators from six (6) ECD centres and thirty (30) ECD teachers from ECD centres in Gweru High Density Suburbs were purposively sampled for the study. Results showed that inadequate provision of resource and environment requirements had bedevilled centres in the high density suburbs. The centres lacked funding resulting in failure to provide a suitable environment and needed resources. The teacher-pupil ratio was as high as 1:50 which was above the 1:20 ratio stated in the Statutory Instrument 106 of 2005. The study recommended that the Ministry of Primary and Secondary Education should not allow ECD centres to operate without meeting the requirements for ECD establishment. Parents and other stakeholders were also encouraged to contribute towards funding, construction and acquisition of resources for ECD centres. The study also recommended that government and council should provide free land for the establishment of ECD centres for both public and private centres. 
Adopsi dan Dampak Penerapan Standard Operating Procedure Pascapanen Karet Rakyat Di Kabupaten Dharmasraya, Sumatera Barat
Authors: Iswari Kasma
Published: February 2017

The lump quality produced by farmers in West Sumatra is low dueto limited access to technologies and postharvest facilities,insufficient implementation of Standard Operating Procedures (SOP), and other problems. The research aimed to study the adoption of postharvest SOP of rubber and its impact at farmers level in Dharmasraya Regency, West Sumatera. The experiment was conducted in three districts at Dharmasraya Regency of West Sumatra Province, from March until December 2013, utillizing descriptive survey through demonstration plot and field school.  Parameters observed were the adoption level, lump quality, and rubber trade before and after the demonstration and field school.  The result showed that the adoption level of rubber postharvest technology varied, from very low to very high.  The adoption positively contributed to lump quality improvement at farmers level, thus meeting the SNI requirements. The price of sheet which meets the SNI did not significantly differ from low graded lump so it is less produced by farmers. Further regulation which endorsed industries to buy rubber at processing and marketing unit or farmers supporting market is needed.
Kompatibilitas Lima Klon Unggul Kakao Sebagai Batang Atas dengan Batang Bawah Progeni Half-Sib Klon Sulawesi 01
Authors: Pranowo Dibyo , Wardiana Edi
Published: February 2017

Grafting is the most common cocoa propagation technique applied by farmers. One of the factors that determine the grafting success in cacao is the compatibility level between the scion and rootstock. The objectives of this research was to evaluate the grafting compatibility of half-sib family of Sulawesi 01 clone as rootstock with five superior cacao clones  i.e. Sulawesi 01, Sulawesi 02, Sca 6, MCC 01, and MCC 02 as scions. The research was conducted at Pakuwon Experimental Station, West Java, at the altitude of 450 m above sea level with Latosol type of soil and B type of climate (Schmidt & Fergusson), from April to September 2015. This research used the randomized completely block design with five treatments of grafting combinations and five replications. Observation was taken at 14th, 21st, and 28th days after grafting on the total percentage of surviving graftings, percentage of sprouting grafting, percentage of grafting that have not sprouted, and bud sprouting rates.  Data were analyzed by variance, correlation, and regression analysis. The results showed that the surviving grafting, the sprouting grafting and the rate of sprouting up to the 28th  days after grafting varied among the scions. Based on the parameters observed, Sulawesi 01, Sulawesi 2, and Sca 6 demonstrated higher compatibility rate compared to MCC 01 and MCC 02. The results is applicable in seedling provision through grafting techniques in order to support cacao rejuvenation and or rehabilitation.
Assessment of the Areal and Vertical Sweep Efficiency in Cyclic Carbonate Reservoirs of the Middle East - A Case Study from a Mature Field
Authors: Abdalla Ruaa , Gomes Jorge , Al Kobaisi Mohammed , Mahmoud Gehad
Published: February 2017

Carbonate reservoirs contain almost half of the world's hydrocarbon proven reserves. Because of the horizontal and vertical heterogeneities present in cyclic carbonate reservoirs, more than 50% of the oil in these rocks is trapped or bypassed and yet to be recovered, even after water injection. This fact by itself motivated researchers to investigate ways to improve the recovery factors by implementing new recovery schemes coupled with advanced well designs and completions. This paper aims to analyze the value of adding ICDs (In Flow Control Devices) in horizontal wells to improve the areal and vertical sweep efficiency and the recovery factor.

A high resolution mechanistic model was built for a large carbonate reservoir in X-Field, with the aim to capture the small scale sedimentary and diagenetic cycles, including the dense stylolitic intervals. Geostatistical algorithms were implemented to propagate the petrophysical properties within a sequence stratigraphic framework. The 3D static model was built based on real field data, using several wells. However, for the purpose of the simulation work done in this study, only a crestal oil producer and a downflank water injector in a line drive system with different completion strategies is analyzed. Different sensitivities were then studied in order to investigate the impact of various reservoir descriptions and multiple well completions, involving vertical wells, standard horizontal wells and horizontal wells with ICDs, on the overall sweep efficiency and recovery factor.

This work showed that changing the fluid injection/production rates as well as completion intervals is not the only controls to achieve higher recovery factors. By implementing smart completions with ICDs and proper well placement, higher volumetric sweep efficiencies were achieved, resulting in an incremental gain of 9% recovery factor.
La vulnerabilidad social. ¿Un discurso que busca superarla y una práctica que apuesta por preservarla?
Authors: Madrid Hincapié Joan Manuel
Published: February 2017

Seguir creyendo que la superación de la vulnerabilidad social en Colombia es un asunto exclusivamente económico, además de ocultar su multicausalidad, es cimentar un conjunto de planes y programas que en cifras han logrado reducir los índices del problema, las cuales se han convertido en el cliché discursivo de discursos que en realidad no dan cuenta de la realidad que afronta el país.
¿Es la psicología un aparato ideológico del estado? Reflexiones desde la obra de Louis Althusser
Authors: Uribe Aramburo Nicolás Ignacio
Published: February 2017

A partir de la experiencia en la práctica en la psicología clínica puede constatarse que en algunos casos la intervención psicológica se convierte en una manipulación ideológica de los individuos, de los pacientes, mediante la cual se les intenta adaptar al sistema social y sus instituciones. Sin embargo, parece que muchos ignoran y otros quieren ignorar este hecho evidente. A continuación se argumentara brevemente el por qué la psicología puede llegar a convertirse en un aparato ideológico del estado, que sirve a los fines de la reproducción de los medios de producción del sistema de explotación capitalista. Ello con el objetivo de concientizar a colegas y estudiantes sobre los riesgos que conlleva el convertir la psicología en un aparato ideológico, pues a menudo muchos psicólogos ni siquiera tienen conciencia de que con sus intervenciones cotidianas a menudo hacen parte de una manipulación ideológica disfrazada de ciencia.
Principios gestálticos aplicados al asesoramiento domiciliario del cuidador de enfermos de Alzheimer
Authors: Moreno Toledo Ángel , Bravo Suances Margarita
Published: February 2017

La óptica con la que se enfrentan determinadas situaciones emerge con una sugestiva visión mediante los principios gestálticos. Aplicados a la competencia del cuidador de enfermos de Alzheimer, sitúa a éste a evaluar su afirmación en el presente, a envolverse en la experiencia y a prestar atención a debilidades, limitaciones y barreras en el ejercicio. Asimismo potenciar las habilidades y aceptar la propia realidad para trabajar en el progreso y ocuparse finalmente de las propias necesidades son sus proposiciones. La toma de conciencia (expresiva y actitudinal) y la búsqueda de soluciones así como el correcto manejo de las emociones suscitadas, debe marcar estas díadas en el cuidado. El descubrimiento del potencial simboliza este objetivo terapéutico desde corrientes humanistas.
Aportes de la psicología de la motivación para la comprensión del comportamiento humano en el trabajo
Authors: Porras Velásquez Néstor Raúl
Published: February 2017

El propósito de este artículo es analizar los aportes que desde las teorías de la motivación se han producido para la compresión del comportamiento y el trabajo humano en las organizaciones  industriales y posindustriales. Se presenta inicialmente, una reflexión sobre la necesidad de ubicar la pregunta por la motivación para el trabajo o la motivación en el trabajo. Luego se abordan en términos bastante amplios el concepto de motivación y se expone la clasificación mas conocida sobre las teorías de la motivación humana en el contexto laboral. Finalmente, se presentaran algunas reflexiones sobre las aplicaciones de dichos modelos en la gestión de los recursos humanos  en nuestro país.
Acerca de lo natural en el hombre: reflexiones a propósito de los conceptos de instinto y pulsión en el psicoanálisis
Authors: Martínez Torres Juan José
Published: February 2017

Los conceptos de pulsión e instinto son fundamentales para comprender las bases de lo que podría llamarse “naturaleza humana”. No obstante, al perseguir tales conceptos, la naturaleza misma del ser humano, se tambalea.A lo largo del presente escrito, procura darse cuenta de la paradoja entre los conceptos de pulsión e instinto, pero al mismo tiempo, de la imposibilidad de prescindir de uno u otro para dar cuenta de aquello que pudiera constituirse como factor diferencial entre el ser humano y las demás especies.Es pues, un recorrido por algunos de los conceptos planteados por Freud y Lacan, a propósito de las pulsiones y los instintos.
La adolescencia deteriorada: subjetivación de la adolescencia en personas en situación de discapacidad
Authors: Amariles Villegas Andrés
Published: February 2017

La llegada a la adolescencia plantea un panorama en el cual, a pesar de todas las trabas y paradojas que le presentan los adultos, la tarea principal es afrontar las pérdidas normales de esta etapa de la vida y hacerse a un lugar independiente en el mundo. Este artículo pretende hacer una reflexión sobre lo que sucede con aquellos sujetos a los que, por una marca, condición o característica se les dificulta, niega o impide esta transición “normal”. Me refiero, pues, a la subjetivación de la adolescencia de las personas en situación de discapacidad.
Del vínculo materno y otras relaciones adictivas
Authors: Ortegón Machado David Stevens
Published: February 2017

Este estudio tuvo como objetivo explorar la significación de la figura materna y su posible relación con la dependencia a sustancias psicoactivas en adolescentes institucionalizados en la Fundación Hogares Claret. La investigación asumió una perspectiva psicoanalítica de corte cualitativo, la población la conformaron tres adolescentes.
¿Psicoanálisis del psicodrama o psicodrama del psicoanálisis?
Authors: Herrera Andrés Felipe
Published: February 2017

La relación entre el psicodrama y el psicoanálisis es sin lugar a dudas compleja, es si se quiere, la relación entre dos invenciones. El psicoanálisis la invención de Freud a partir de su descubrimiento, el inconsciente, y el psicodrama la invención de Jacobo Moreno para abordar por medios dramáticos y colectivos la nueva subjetividad producida por el descubrimiento freudiano, una subjetividad por develar. Sin embargo la relación entre estos dos personajes, ambos contemporáneos, no deja de presentar algunas dificultades, pues Moreno pretendía haber llegado más allá de Freud, con el famoso “yo comienzo allí donde usted termina, usted analiza sueños yo invito a soñar.” Freud por su lado, según parece, poco se interesó por el psicodrama que Jacobo Moreno proponía por primera vez como psicoterapia de grupo.
Niñez y adolescencia contemporáneas: el malestar en una cultura deshumanizante
Authors: Chavarría Arango Zayda Patricia
Published: February 2017

Cuando se habla de niñez y adolescencia resulta fundamental reconocer la incidencia de los avatares históricos en cuyo devenir se han construido multiplicidad de nociones teóricas, como resultado de la investigación científica y experimental que en último término dio lugar al establecimiento de postulados biologicistas, ambientalistas y del desarrollo psicosexual y cognitivo; generándose así, un esquema si bien fragmentado;  es en su interacción donde se hace lo suficientemente completo para instaurar las características esenciales de ambos momentos del desarrollo humano. En este orden de ideas, el desarrollo infantil y de la adolescencia han sido temas de interés a lo largo de las épocas, especificados en diversidad de abordajes teóricos, de gran valor conceptual. Sin embargo, fue la niñez el campo de investigación más elaborado por  pensadores de diferentes disciplinas, quienes a su vez, actuaron como precursores para el estudio de la Adolescencia en períodos posteriores.
Políticas sociales en Argentina y construcción de subjetividades
Authors: Butti Federico , Barbetti Pablo
Published: February 2017

En el marco de los cambios en la orientación de las políticas sociales, llevados a cabo en Argentina desde el año 2003, se analizan algunos núcleos conceptuales de un programa social centrado en la promoción del trabajo y el cooperativismo, a la vez que se problematiza la cuestión del sujeto que promueven estas acciones.
Liquid-gas mass transfer at drop structures
Authors: Matias Natércia , Nielsen Asbjørn Haaning , Vollertsen Jes , Ferreira Filipa , Matos José Saldanha
Published: February 2017

Over the last decades, considerable progress has been made in the understanding of the sulfur cycle in sewer systems. In spite of a wealth of experimental and field studies that have addressed the release of hydrogen sulfide from free surface flows in gravity sewers and the corresponding air-water mass transfer, little is known about hydrogen sulfide emission under highly turbulent conditions (e.g., drop structures, hydraulic jumps). In this study, experimental work was carried out to analyze the influence of characteristics of drops on reaeration. Physical models were built, mimicking typical sewer drop structures and allowing different types of drops, drop heights, tailwater depths and flow rates. In total, 125 tests were performed. Based on their results, empirical expressions translating the relationship between the mass transfer of oxygen and physical parameters of drop structures were established. Then, by applying the two-film theory with two-reference substances, the relation to hydrogen sulfide release was defined. The experiments confirmed that the choice of the type of drop structure is critical to determine the uptake/emission rates. By quantifying the air-water mass transfer rates between free-fall and backdrop types of drop, the latter resulted in considerably lower oxygen uptake rates.
Application of powdered activated carbon (PAC) for membrane fouling control in a pilot-scale MBR system
Authors: Zouboulis A. I. , Gkotsis P. K. , Zamboulis D. X. , Mitrakas M. G.
Published: February 2017

Membrane fouling is considered to be the most serious drawback in wastewater treatment when using membrane bioreactors (MBRs), leading to membrane permeability decrease and efficiency deterioration. This work aims to develop an integrated methodology for membrane fouling control, using powdered activated carbon (PAC), which will enhance the adsorption of soluble microbial products (SMP) and improve membrane filterability, by altering the mixed liquor's characteristics. Reversible fouling was assessed in terms of sludge filterability measurements, according to the standard time-to-filter (TTF) method, while irreversible fouling was assessed in terms of SMP removal. Results showed that the addition of PAC at the concentration of 3 g/L in the mixed liquor reduced SMP concentration and enhanced substantially the sludge filterability. Furthermore, the TTFPAC/TTFno PAC ratios were lower, than the corresponding SMPPAC./SMPno PAC ratios, indicating that the batch-mode, short-term addition of PAC promotes the reversible, rather than the irreversible fouling mitigation.
Evaluation of Ageratum conyzoides in field scale constructed wetlands (CWs) for domestic wastewater treatment
Authors: Tilak A. S. , Wani Suhas P. , Datta A. , Patil M. D. , Kaushal M. , Reddy K. R.
Published: February 2017

Ageratum conyzoides were evaluated in field scale subsurface flow constructed wetlands (CWs) to quantify its nitrogen (N) and phosphorus (P) uptake and compare with wetland plants (Pistia stratiotes, Typha latifolia and Canna indica). The two-field scale subsurface flow CWs, located in the International Crops Research Institute for Semi-Arid Tropics, received wastewater from an urban colony. The CW1 and CW2 had the same dimensions (length:10 m, width:3 m, total depth:1.5 m and sand and gravel:1 m), similar flow rates (3 m3/d), hydraulic loading rates (HLRs-10 cm/d) and hydraulic retention time (HRT-5 days) from July 2014–August 2015. The vegetation in both CWs consisted of Pistia stratiotes, Typha latifolia, Canna indica, and Ageratum conyzoides, respectively. The CW1 (% reduction with respect to concentrations) reduced total suspended solids (TSS) (68%), NH4-N (26%), NO3-N (30%), soluble reactive P (SRP) (20%), chemical oxygen demand (COD) (45%) and fecal coliforms (71%), while the CW2 (%-reduction with respect to concentrations) reduced TSS (63%), NH4-N (32%), NO3-N (26%), SRP (35%), COD (39%) and fecal coliforms (70%). Ageratum conyzoides can be used in combination with Pistia stratiotes, Typha latifolia and Canna indica to enhance removal of excessive N, P and fecal coliforms from domestic wastewater.
Application of Scallop shell-Fe3O4 nanoparticles for the removal of Cr(VI) from aqueous solutions
Authors: Mohagheghian Azita , Vahidi-Kolur Robabeh , Pourmohseni Melina , Yang Jae-Kyu , Shirzad-Siboni Mehdi
Published: February 2017

In this study, removal of Cr(VI) by Scallop shell-Fe3O4 nanoparticles was investigated with variation of pH, adsorbent dosage, initial Cr(VI) concentration, ionic strength and temperature. Coating of Fe3O4 nanoparticles onto Scallop shell was identified by Fourier transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy and energy dispersive X-ray analysis. The maximum adsorption was observed at pH 3. Removal efficiency of Cr(VI) was increased with increasing adsorbent dosage, but was decreased with increasing initial Cr(VI) concentration and temperature. Removal efficiency of Cr(VI) was decreased in the presence of sulfate and carbonate ions. Adsorption kinetic study revealed that a pseudo-second order model better described the removal data than a pseudo-first order model and an intra-particle diffusion model. Maximum adsorption capacity was estimated to be 34.48 mg/g. Thermodynamic studies indicated that adsorption of Cr(VI) onto Scallop shell-Fe3O4 nanoparticles occurred via an exothermic (ΔH = −320.88 KJ mol−1) process. Adsorption efficiency of Cr(VI) by Scallop shell-Fe3O4 nanoparticles was maintained even after eight successive cycles.
Evaluation of Lagergren Kinetics Equation by Using Novel Kinetics Expression of Sorption of Zn2+ onto Horse Dung Humic Acid (HD-HA)
Authors: Rusdiarso Bambang , Basuki Rahmat , Santosa Sri Juari
Published: February 2017

Extraction and purification of humic acid from dry horse dung powder (HD-HA) was performed successfully and the purified HD-HA was then applied as sorbent to adsorb Zn2+. Extraction and purification were performed based on procedure of Stevenson (1994) under atmospheric air. Parameters investigated in this work consist of effect of medium sorption acidity, sorption rate (ka) and desorption rate constant (kd), Langmuir (monolayer) and Freundlich (multilayer) sorption capacities, and energy (E) of sorption. The ka and kd were determined according to the kinetic model of second order sorption reaching equilibrium, monolayer sorption capacity (b) and energy (E) were determined according to Langmuir isotherm model, and multilayer sorption capacity (B) was determined based on Freundlich isotherm model. Sorption of Zn2+ on purified HD-HA was maximum at pH 5.0. The novel kinetic expression resulted from proposed kinetic model has been shown to be more applicable than the commonly known Lagergren equation obtained from the pseudo-first order sorption model. The application of the equation revealed that the intercept of Lagergren equation, ln qe was more complex function of initial concentration of Zn2+ (a), Langmuir sorption capacity (b), and sorbed Zn2+ at equilibrium (xe).
New Prenylated Stilbenes and Antioxidant Activities of Cajanus cajan (L.) Millsp. (Pigeon pea)
Authors: Ersam Taslim , Fatmawati Sri , Fauzia Dini Nur
Published: February 2017

New Prenylated stilbene derivatives, 3-hydroxy-4-prenyl-5-methoxy-stilbene acid (1) and 5,4'-dihydroxy-3-methoxy-2-prenyl-stilbene (2) had been isolated from methanol extract of Cajanus cajan (L.) Millsp. (Pigeon pea), a member of family fabaceae. The aim of this present work was to evaluate its in vitro antioxidant activity using 2,2-diphenyl-1-picryhydrazyl (DPPH) radical-scavenging. Isolation of compounds was achieved by extraction (maceration) and chromatographic technique. The structures of the compounds were determined based on UV, IR, 1H-NMR and 13C-NMR spectra and also by comparing with the previously reported data. Antioxidant activities (IC50) of 1 and 2 were 413.68 μg/mL and 271.53 μg/mL, respectively.
Oxidation of Cyclohexane to Cylohexanol and Cyclohexanone Over H4[a-SiW12O40]/TiO2 Catalyst
Authors: Lesbani Aldes , Fatmawati Fatmawati , Mohadi Risfidian , Fithri Najma Annuria , Rohendi Dedi
Published: February 2017

Oxidation of cyclohexane to cyclohexanol and cyclohexanone was carried out using H4[a-SiW12O40]/TiO2 as catalyst. In the first experiment, catalyst H4[a-SiW12O40]/TiO2 was synthesized and characterized using FTIR spectroscopy and X-Ray analysis. In the second experiment, catalyst H4[a-SiW12O40]/TiO2 was applied for conversion of cyclohexane. The conversion of cyclohexane was monitored using GC and GCMS. The results showed that H4[a-SiW12O40]/TiO2 was successfully synthesized using 1 g of H4[a-SiW12O40] and 0.5 g of TiO2. The FTIR spectrum showed vibration of H4[a-SiW12O40] appeared at 771-979 cm-1 and TiO2 at 520-680 cm-1. The XRD powder pattern analysis indicated that crystallinity of catalyst still remained after impregnation to form H4[a-SiW12O40]/TiO2. The H4[a-SiW12O40]/TiO2 catalyst was used for oxidation of cyclohexane in heterogeneous system under mild condition at 2 h, 70 °C, 0.038 g catalyst, and 3 mL hydrogen peroxide to give cyclohexanone as major product.
Comparative Study of Ni-Zn LHS and Mg-Al LDH Adsorbents of Navy Blue and Yellow F3G Dye
Authors: Ikhsani Idha Yulia , Santosa Sri Juari , Rusdiarso Bambang
Published: February 2017

Adsorption of disperse dyes from wastewater onto Ni-Zn LHS (layered hydroxide salts) and Mg-Al LDH (layered double hydroxides) has been compared in this study. Effects of initial pH solution, contact time and initial dye concentration were investigated. The ability of the adsorbent to be reused was also studied. The results showed that acidic condition was favorable for the adsorption of each dyes onto both adsorbent. The adsorption kinetics was studied using pseudo-first-order, pseudo-second-order and Santosa’s kinetics models. The experimental data fits well with the pseudo-second order kinetic model. The equilibrium adsorption data were analyzed using Langmuir and Freundlich isotherm models. The results showed that adsorption of navy blue onto both adsorbent followed Freundlich isotherm adsorption, while yellow F3G followed Langmuir isotherm adsorption. In the application for the adsorption the wastewater containing dyes, Ni-Zn LHS has a better adsorption capacity of 52.33 mg/g than that of Mg-Al LDH that 30.54 mg/g. Calcination of the adsorbent which has already been used increased the adsorption capacity of Mg-Al LDH to 84.75 mg/g, but decreased the adsorption capacity of the Ni-Zn LHS to 42.65 mg/g.
Biodiesel Production from Waste Palm Oil Catalyzed by Hierarchical ZSM-5 Supported Calcium Oxide
Authors: Zein Yusuf Muhammad , Anal Anil Kumar , Prasetyoko Didik , Qoniah Imroatul
Published: February 2017

Biodiesel production from waste palm oil catalyzed by hierarchical ZSM-5 supported calcium oxide was studied. The activity of CaO increased after supported on h-ZSM-5 resulting an increase in conversion from 93.17% to 95.40%. A maximum conversion of 95.40% was achieved at 6 h reaction time, 3 wt.% catalyst amount, 12:1 methanol to oil molar ratio and 65 °C reaction temperature. The waste palm oil showed a high potential as a feedstock in biodiesel production in which there was no significant different in the conversion of fresh and waste palm oil. The properties of the obtained biodiesel required the limits of biodiesel specification according to ASTM D6751-08 and EN 14214 with the methyl ester content of 97.18%, the acid value of 0.24 mg KOH/g, the kinematic viscosity of 4.64 cSt and the density of 869.9 kg/m3.
Oxidative Desulfurization of Dibenzothiophene Using Dawson Type Heteropoly Compounds/Tantalum as Catalyst
Authors: Mohadi Risfidian , Teresia Lusi , Fithri Najma Annuria , Lesbani Aldes , Hidayati Nurlisa
Published: February 2017

Catalyst (NH4)6[b-P2W18O62]/Ta has been synthesized by simple wet impregnation at 30-40 °C under atmospheric conditions using Dawson type polyoxometalate (NH4)6[b-P2W18O62] and tantalum. The catalyst was characterized by FTIR spectrophotometer, XRD, SEM, and N2 adsorption desorption methods. FTIR spectrum of (NH4)6[b-P2W18O62]/Ta showed that Dawson type polyoxometalate (NH4)6[b-P2W18O62] and Ta was successfully impregnated which was indicated by vibration spectrum at wavenumber of 900-1100 cm-1 for polyoxometalate and 550 cm-1 for Ta. The surface area of the (NH4)6[b-P2W18O62]/Ta after impregnation was higher than (NH4)6[b-P2W18O62]•nH2O and its morphology was found to be uniform. The catalytic activity of (NH4)6[b-P2W18O62]/Ta toward desulfurization of dibenzothiophene was three times higher than the original catalyst of (NH4)6[b-P2W18O62]•nH2O without impregnation. The catalytic regeneration test of catalyst (NH4)6[b-P2W18O62]/Ta showed that the catalytic activity for first regeneration of catalyst has similar catalytic activity with the fresh catalyst without loss of catalytic activity indicated by almost similar percent conversion.