bluuebunny/crossref_metadata_2025 huggingface dataset:
Development of Kenaf Nonwoven as Automotive Noise Absorption
Authors: Husain Siti Nor Hawanis , Abdul Razak Nur Aiman , Abdul Rashid Azrin Hani , Yahya Musli Nizam Bin , Zamri Tan Nurul Zakiah , Shaari Muhammad Farid , Mahmood Salwa , Marsi Noraini , Mohamad Isa Harris Mubashir
Published: June 2019

Getting rid of unwanted noise in car compartment is necessary and really significant measure for automotive makers. This research was directed to produce nonwoven material from Kenaf fiber using the needle-punching machine and the ability of the produced material to absorb sound will be tested. The performance in sound absorption of the sample was analyzed by the sound absorption coefficient (SAC) and noise reduction coefficient (NRC) using the impedance tube test referring to ASTM E1050-98. The sound absorption frequencies were evaluated utilizing the two-microphone transfer function technique in the impedance tube that has a 100 mm diameter for low frequency and 28 mm for high frequency, 0 Hz to 4000 Hz respectively. The physical examination also was executed according to ASTM D1772 to determine the density and the thickness of each sample. The parameter verified in this research is the number of layers to form the samples and it also were compared with the commercial products. As the outcome of this research, the sound absorption coefficient (SAC) showed that the sound reduction coefficient value was increased as the number of layers of the sample increase. In summation, the result also proved that the denser the samples, the higher the absorption coefficient value. On the other hand, for the noise reduction coefficient (NRC), overall result showed slight differences between each sample. The result is due to the rating is an average, two materials with the same rating might not perform the same. Referring to the previous research, the sample with higher areal density is dependable for higher sound reduction and there is a negative relationship between area density and bulk density of needle-punched nonwoven and sound reduction. With the rise in the number of density of nonwoven fabric, the sound reduction through the fabric increases at first but after the maximum it remains almost unaffected.
Dynamic Data Sampling Approach by Using Price Distribution of Crude Palm Oil to Forecast High Magnitude Price Movement
Authors: Sim Kwan Hua , Goh Isaac , Sim Kwan Yong
Published: June 2019

Traditionally the chemical industry uses coal, minerals and petroleum as its basic raw materials, but palm oil and palm kernel oil are being increasingly used as economical raw materials especially for the production of oleochemicals. High magnitude palm oil price volatility in recently years has been a major challenge faced the industry. Though many time series models have been developed, few have wide adoption in the industry, and one of the key issues is the sampling interval used in the models. To date, little effort has been spent on mining historical data to determine the representativeness of interval sampling. This paper presents a novel approach in identifying price equilibrium for crude palm oil by mining the sampling amount through historical price distribution. Evaluation is done on the outcomes of the experiment, and analysis is performed on the attributes of each different criteria of the price distribution. The performance of the proposed approach is also compared to the conventional Bollinger Band with static sampling size. Overall, the preliminary results show that price distribution with leptokurtic distribution outperforms other price distribution patterns, this will definitely assist further works to devise a novel financial time series analysis technique.
Identifying the Types of Phobia: A Preliminary Investigation to Reduce Phobia through Gaming Approach
Authors: Baharum Aslina , Mat Zain Nurul Hidayah , Yasin Anita Mohd , Jono Mohd Nor Hajar Hasrol , Mohamed Noh Nor Azida , Alias Nuraliah
Published: June 2019

People fear something, as the feeling is normal for a person. Fear reactions are essential for survival. Fear will triggered whenever an individual facing something scary or even confronted with something new that seems potentially dangerous. Phobia on the other hand is an intense feeling of fear towards objects, animals, activities, situations or persons. However, many people do not know they suffered from phobia. Any fear during childhood might develop into phobias. People with phobias are most likely to avoid any place or situation that might trigger their fear so that they feel relief. They also keep their phobia to themselves and not telling other people about it. Besides, they are most likely refuse to go to receive treatment from psychiatrist or therapist. This is due to the norm of the society that seeing psychiatrist or therapist means that person suffering from mental health, which is embarrassing. This paper identified the types of phobia among Malaysian for preliminary investigation for reducing phobia through gaming approach. The quantitative method based on questionnaires, which contains of 18 questions used in the random online survey. The set of questions are adapted from Fear of Spiders Questionnaire. The higher the marks are the higher the state of phobia of the individuals will be. It is hope that by identifying the types of phobia may use to suggest an alternative gaming tool in reducing phobia.
A High Efficiency Gyrostabilizer Antenna Platform for Real-Time UAV Synthetic Aperture Radar (SAR) Motion Error Compensation
Authors: Awang Ahmad Zahari , Lim Tien Sze , Koo Voon Chet , Daud Shuhaizar , Asmi Romli Muhamad , Raof Rafikha Aliana A.
Published: June 2019

A gyro-stabilized antenna platform could implement a real-time motion compensation for a SAR system. Since motion errors reduce during the data acquisition process, post-processing load also reduces. Subsequently, production of well-focused, and high-resolution synthetic aperture radar (SAR) images is conceivable. The research is to design a gyro-stabilized SAR antenna platform that compensates motion in real time during data acquisition. This paper explains the study of undesired motion (error) for typical UAV SAR. The resulting angle ranges of yaw, pitch, and roll describe the magnitude of the motion errors. The design of a gimbal system as a stable antenna platform considers yaw, pitch and roll range parameters. IMU optimization (Complimentary Filter, and Madgwick Filter algorithms are tested and compared in order to decide the optimum optimization scheme for the antenna platform. The data fusion and gradient descent algorithm from Madgwick show significant performance. The implementation of the optimized IMU algorithm and control on a field programmable gate array (FPGA) has resulted in a very effective stable antenna platform.
The Effects of System Quality on Social Commerce
Authors: Nistah Nona M. , Sura Suaini , Lee Ook
Published: June 2019

This study examines the effect of system quality (SQ) determinants on social commerce (s-commerce) context from the s-commerce consumers’ perspective by adapting IS success model. 220 data samples from online survey were analyzed using confirmatory factor analysis (CFA) and the structural equitation model (SEM) to test the research model. The findings show that visibility has a significant effect on perceived usefulness, and ease of use and responsiveness has a significant effect on customer satisfaction. In addition, the finding indicates the significant relationship among perceived usefulness, customer satisfaction and net benefits in s-commerce.
Maximum Density Effects on Natural Convection over an Isothermal Vertical Plate Embedded in an Anisotropic Porous Medium
Authors: Degan Gérard , Egboho Franck M. , Akowanou Djidjoho Christian
Published: June 2019

Keywords: Natural convection, anisotropic porous medium, inversion of density.Abstract. The natural convection in the porous medium has attracted considerable attention with its applications in various industrial sectors, such as the agro-alimentary, the pharmaceutical and oil processing industries. The present work is about the study of the phenomenon of natural convection at 4°C on the vertical plate lining in an anisotropic porous medium in permeability. The wall of the vertical surface is subjected to a constant temperature with defined hydrodynamic conditions and thermal limits. Generalized Darcy’s law was used to establish the governing equations of the system. The control parameters governing the system are respectively the permeability ratio K*, the angle ϴ of the major axis and the inversion parameter R. The general basic equations were solved numerically using Runge-Kutta and shooting method. There was validated against previous work. The effect of these parameters on the heat transfer was highlighted. From the analysis result, it comes out the following conclusions: The convective flow is significantly affected by the anisotropic parameter; heat transfer along the vertical surface is maximum (minimum) when the main shaft having the high permeability is oriented parallel (perpendicular) to the gravitational field; the rate of heat transfer is depending on the inversion parameter R. The convective transfer rate illustrated by the local Nusselt number is symmetric with respect to R=0.45, where it reaches its smallest value. It is inversely proportional to the distribution of the thickness of boundary layer. A high convective transfer rate corresponds to a low boundary layer thickness and this inversely.
Effect of Variable Thermal Conductivity Calibration Functions on Fin Temperature Distribution
Authors: Ndlovu Partner Luyanda , Moitsheki Raseelo Joel
Published: June 2019

In this article, we introduce a new thermal conductivity calibration function in modeling heat transfer through extended surfaces. The variable thermal conductivity functions are studied on a stand alone basis and further compared to one another. The calculations are carried out using the Variational Iteration Method (VIM) which is an analytical solution technique. The series solutions are bench-marked against the numerical results obtained by applying the Runge-Kutta fourth order method coupled with shooting technique. The effects of some physical parameters such as the thermogeometric fin parameter and thermal conductivity gradient, on temperature distribution are illustrated and explained.
Cyanotoxins: A hidden cause of Chronic Kidney Disease of unknown etiology (CKDu) in Sri Lanka - A review
Authors: Manage Pathmalal M
Published: June 2019

CKDu has been identified as a major public health issue in countries such as Sri Lanka, India and Nicaragua, which causes significant deaths per year. Significant similarities have been observed among these endemic nephropathies regardless of their geographical separation. Existing evidence favors a multi-factorial etiology, but research over the last few decades has failed to recognize the specific risk factors. Based on the geographical distribution that is unique and evidence of histopathological nature, it is speculated that CKDu is environmentally induced health problem. Hypothesis linking acetylcholinesterase (AChE) inhibiting organophosphate pesticides, metal-chelating glyophosate, agrochemicals, cadmium, arsenic, fluoride, hardness, and algae/cyanobacteria are considered as important factors in the etiology of CKDu. However, to date, no single geochemical parameter is shown to be directly related to the CKD etiology on the basis of the elements determined during research studies, and it is very likely that the unique hydrogeochemistry and microbiology of the drinking water is closely associated with the incidence of the disease in the endemic areas. The paper discuss understudied area of research is whether cyanotoxin formation from algal blooms may be a risk factor that contributes to CKDu in Sri Lanka as cyanotoxins in CKDu has been considered but not investigated.
Longitudinal Aerodynamic and Stability Characteristics of High-Aspect-Ratio Unmanned Aerial Vehicles in Gust Response
Authors: Wang Junli , Zhang Wensheng , Feng Bolin , Ren Zhigui , Zhao Qinghe
Published: June 2019

The aim of this work is to propose an accurate and reliable numerical simulation method of gust response, so as to analyze longitudinal stability characteristics of high-aspect-ratio unmanned aerial vehicles (UAVs) under gust response. Based on the dual-time stepping method, the unsteady Navies-Stokes equation was solved. By introducing grid velocity to study the effects of gust, the numerical simulation of gust response was realized. Moreover, the numerical simulation method was verified to be accurate by using the theoretical value and reference value obtained in previous research. The calculation results of the high-aspect-ratio UAV under the 1-cos gust reveal that longitudinal aerodynamic forces of high-aspect-ratio UAVs changed. In the whole range of gust gradient length, the UAVs were always in the state of static stability. However, with the increase of gust velocity, static stability margin decreased. The numerical simulation method of gusts established in this study preferably overcomes the possible numerical oscillations and divergence problems caused by excessive gust velocity. The analysis on longitudinal static stability and stability margin of high-aspect-ratio UAVs under the effects of gusts can ensure flight quality and safety of UAVs under the effects of gusts.
Entre el victimismo meritocrático y la resignación. Dos percepciones antagónicas de la precariedad juvenil en España
Authors: Gil Rodríguez Héctor , Rendueles César
Published: June 2019

En la última década se ha popularizado el concepto de “precariado”, acuñado por Guy Standing, para describir un conjunto de vulnerabilidades características de los mercados de trabajo postfordistas que estarían definiendo una clase social emergente relativamente homogénea. Una de las principales debilidades de esta categoría es su incapacidad para hacerse cargo de las profundas diferencias que existen entre los propios trabajadores precarios y que tienen que ver con desigualdades estructurales relacionadas con su origen familiar, su capital económico, cultural o simbólico y su papel en el proceso productivo. Este artículo trata de sacar a la luz esas diferencias analizando la autopercepción del proceso de precarización por parte de jóvenes españoles de distintos orígenes sociales.
Explorando las barreras de la segregación ocupacional. Un estudio comparativo entre mujeres maquinistas de tren y mecánicas de vehículos de automoción
Authors: Ballesteros Doncel Esmeralda , Maira Vida María del Mar
Published: June 2019

La segregación ocupacional es un fenómeno persistente pese a la continua promoción de políticas de igualdad de oportunidades. En este artículo se describen diversas barreras que han condicionado el acceso y la permanencia en el empleo de mujeres maquinistas de tren y mujeres mecánicas de vehículos de automoción. Los resultados se basan en los estudios de caso de estas dos ocupaciones en España, y tienen como base principal el análisis de entrevistas en profundidad a mujeres y hombres empleados en esas ocupaciones. La perspectiva comparada se justifica porque las empresas presentan características de organización disímiles, en tamaño y estilo de gestión, pero un resultado similar de sub-representación laboral. Los hallazgos sugieren la presencia de, al menos, dos tipos de obstáculos: 1) barreras explícitas relacionadas con los procedimientos de selección del personal y las características materiales de los espacios de trabajo y 2) barreras implícitas asociadas con las actitudes y prácticas relacionales entre la minoría —trabajadoras— y la mayoría —varones—.
Demandantes de empleo frente a políticas de activación: conformes, distantes y beligerantes
Authors: Pozo Cuevas Federico
Published: June 2019

Los actuales servicios públicos de empleo expresan la consolidación del paradigma de la activación en el terreno de las políticas de lucha contra el desempleo. Como modo de intervención, la activación ha dado lugar a políticas, dispositivos y tecnologías que producen en las personas desempleadas una serie de vivencias cuyo análisis pone de manifiesto las ambivalencias, contradicciones y trampas a las que aboca el citado paradigma. Este trabajo estudia el caso de las políticas de activación implementadas en Andalucía mediante la realización de grupos focalizados con participantes en programas públicos de empleo. Los resultados señalan el predominio de tres representaciones sobre las políticas de activación. Aunque puede hablarse de una vivencia conforme, resultan más patentes las posiciones que muestran, aunque con ambivalencias, el distanciamiento y el disenso de la ciudadanía hacia la lógica y las formas con las que se prestan los actuales servicios públicos de empleo.
El efecto de la salud en la actividad en los mayores de 50 años en España: 2006 y 2014
Authors: Domínguez-Rodríguez Antía , Blanes Llorens Amand
Published: June 2019

El objetivo es indagar si variables sociodemográficas, como la educación o hogar, y el contexto económico modulan el efecto de la salud sobre el abandono del mercado laboral en los mayores de 50 años.

Se emplea la regresión logística para estimar probabilidades de estar activo según estado de salud, por edad y sexo, controlando por otras variables sociodemográficas. La información proviene de los microdatos de las encuestas de salud de 2006 (ENSE) y de 2014 (EESE).

Los resultados revelan un aumento de la tasa de actividad para todos los estados de salud en las mujeres por un componente generacional, y el papel de la educación como variable moduladora del efecto de la salud sobre la actividad de las mujeres en ambos años y los hombres en 2014 (OR=6,17 y OR=5.40 una vez se controla por educación). La crisis ejerce un efecto penalizador sobre aquellos con peor estado de salud.
A covering property with respect to generalized preopen sets
Authors: Mukharjee Ajoy
Published: June 2019

In this paper,  we introduce and study the notion of $\mu$-precompact spaces on the observation that  each $\mu$-preopen set of a generalized topological space is contained  in a $\mu$-open set. The $\mu$-precompactness is weaker than $\mu$-compactness but stronger than weakly $\mu$-compactness of  generalized topological spaces.
The image of Jordan left derivations on algebras
Authors: Hosseini Amin , Fosner Ajda
Published: June 2019

Let A be an algebra, and let I be a semiprime ideal of A. Suppose thatd : A → A is a Jordan left derivation such that d(I) ⊆ I.We prove that if dim{d(a)+I : a ⋲ A} ≤ 1, then d(A) ⊆ I. Additionally, we consider several consequences of this result.
Some fixed and common fixed point results in G-metric spaces which can't be obtained from metric spaces
Authors: Shatanawi Wasfi , Abodayeh Kamaleldin
Published: June 2019

In this paper, we use the concepts of (A;B)-weakly increasing mappings and altering distance functions to establish new contractive conditions for the pair of mappings in the setting of G-metric spaces. Many Fixed and common Fixed point results in the setting of G{metric spaces are formulated. Note that our new contractive conditions can't be reduces to contractive conditions in standard metric spaces.
El Realejo: una comunidad viva sobre un emplazamiento arqueohistórico
Authors: Espinoza Vallejos Sandra Verónica , García Vásquez Ramiro
Published: June 2019

La antropología sociocultural de la comunidad de El Realejo, municipio del Departamento de Chinandega es un tópico de gran importancia que necesita ser analizado; se trata de una población emplazada sobre los vestigios arqueohistóricos de lo que fue el primer espacio geográfico colonial de Nicaragua. El conquistador Andrés Niño lo bautizó como Puerto de la Posesión en 1522 y lo anexó formalmente a las propiedades de la Corona española, como parte de las políticas invasoras occidentales, años más tarde lo llamaron Puerto de la Posesión de El Realejo por la fundación de La Villa de El Realejo en 1534 y de ahí deriva su nombre actual. Durante un poco más de trecientos años fue uno de los puertos coloniales más importantes de Centroamerica. En el año 2005 realizamos estudios de carácter antropológico, arqueológico e histórico, en la actual población; obteniendo interesantes datos sobre el emplazamiento colonial, la comunidad viva y la relación entre ambas a través de su Patrimonio Cultural Material e Inmaterial. La riqueza patrimonial del municipio puede ser aprovechada para el desarrollo del Turismo Comunitario Sostenible que permitiría mejorar la economía local a la vez que se protege, conserva, divulga y se logra la puesta en valor de este Patrimonio Cultural del Municipio la Nación.
En el pensamiento de Elizalde: Descubriendo las estructuras profundas del capitalismo
Authors: Velásquez Hernández José Ramón
Published: June 2019

Este ensayo cuyo título ha sido denominado: En el pensamiento de Elizalde: Descubriendo las estructuras profundas del capitalismo, pretende ser una reflexión y una crítica sobre la construcción de una nueva cultura basada en un modelo de consumo, que induce a los seres humanos a realizar esta práctica sin el mínimo cuestionamiento sobre lo que hacen y sobre los efectos nocivos que provocan a la naturaleza y a ellos mismos. La sostenibilidad encuentra un obstáculo en el sistema económico de producción capitalista, porque toda práctica económica que incluya lo sostenible como eje transversal constituye la antítesis del sistema. En este ensayo se propone mostrar las formas de vivir tradicionales, como la de pueblos originarios, comunidades étnicas y comunidades campesinas, aplican estrategias de vida que incorporan sostenibilidad. Invito al lector a seguir las líneas de esta reflexión y crítica al ensayo titulado: ¿Qué desarrollo puede llamarse sostenible en el siglo XXI? La cuestión de los límites y las necesidades Humanas.
Water-bath stunning process in broiler chickens: Effects of voltage and intensity
Authors: Novoa Martin , Vázquez Luis , Lage Almudena , González-Torres Inmaculada , Pérez-García Luis F. , Cobas Noemi , Lorenzo Jose M.
Published: June 2019

The effect of electrical parameters (intensity and voltage) to obtain an effective water-bath stunning in a commercial poultry slaughterhouse was studied. A total of 390 broilers were randomly divided into six experimental groups according to the intensity (150 and 200 mA) and voltage (51-60, 61-80 and 81-100 V). Statistical analysis showed a significant (p<0.001) effect of electrical parameters on the cloacal reflex since the response rate was 8 s for 96% of broilers. On the other hand, the stunning treatments suppressed the palpebral reflex up to 12 s in 80% of broilers. All stun-treated broilers showed breathing response after 27 s with an average time between 45 and 50 s depending on voltage and intensity of the current. Regarding voltage, the percentage of complete neck cutting increased with the increase of voltage, presenting the highest levels in broilers stunned at 81-100 V (100 and 92.8%, for 150 and 200 mA, respectively). Concerning to intensity, the best results were obtained in broilers stunned at 150 mA, showing mean percentages of 94.83 and 87.30%, for 150 and 200 mA, respectively. The bruises on wings were significantly (p<0.001) affected by voltage, observing the highest values in broilers slaughtered at lower voltages. An opposite trend was observed on bruises under the wings since the lowest voltages showed (p<0.001) lower levels (1.34 and 1.42%, for 150 and 200 mA, respectively). Finally, bruises on dorsal winds and on back were significantly (p<0.001) influenced by intensity level, showing the lowest percentages in broilers stunned at 150 mA.
Prospects and Feasibility of Diaspora Bond: The Case of Ghana
Authors: Mensah Lord
Published: June 2019

This study sought to establish the rationale, feasibility, conditions, determinants and hindrances of a successful issuance of a diaspora bond by Ghana as a sovereign economic entity. The study also sought to assess the willingness of the Ghanaian diaspora to patronise a diaspora bond. A total of 12 financial institutions within Accra and 113 Ghanaians living in the diaspora were contacted using the purposive sampling method. The study finds that Ghana has patriotic citizens in the diaspora who are ready to patronize its diaspora bonds. It was also found that prospective investors of Ghana’s diaspora bond find GDP growth and political stability as the most favourable indicators in pulling investors. The study concludes that though internal weaknesses and external threats exist, Ghana stands a good chance for a successful diaspora bond issue with an anticipated high patronage by Ghanaians in the diaspora.
Structure and development of root gall induced by Meloidogyne javanica in Glycine max L.
Authors: Vilela Roberta Mendes Isaac Ferreira , Martini Vitor Campana , Gonçalves Letícia  de Almeida , Kuster Vinícius Coelho , Oliveira Denis Coelho de
Published: June 2019

Galls formed by root-knot nematodes have been studied in several cultivated species focusing on understanding the intimate relationship between parasite and the host plant. Species of Meloidogyne induce the development of a feeding site in the cortex or vascular cylinder of the host plant and are totally dependent on this site formation to complete their life cycle. Therefore, we focused on anatomical, cytological and histochemical changes during the establishment and development of galls and giant cells induced by Meloidogyne javanica in the roots of Glycine max. Seeds of soybean (susceptible cultivar M8372 IPRO) were sown in trays with coconut fibre substrate and the seedlings were removed ten days after the seeds emerged for nematode inoculation. The roots from inoculated and non-inoculated (control) were sampled at different stages of development until 55 days after inoculation. Histological, cytological, histochemical analysis were performed in light and electron microscopy in non-galled tissue and galls induced by M. javanica. The galls showed different shapes and abundance in the roots inoculated by M. javanica. The induction of galls occurs by hypertrophy of the root cortex shortly after the initial infection process. Giant cells were formed 18 days after nematode inoculation. These giant or nourishing cells are multinucleated, and have a dense cytoplasm, a thick wall with invaginations, many mitochondria and small vacuoles. The anatomical sections indicated a disorganisation of the cells of the cortex and vascular cylinder in relation to the control root.
Substrates with organic residues in Fritillaria cirrhosa seedlings for bulbus production
Authors: Hu Ye , Liu Xuan , Ye Meng
Published: June 2019

China is abundant in organic residues from agricultural and forestry efforts. Bulbus Fritillaria cirrhosa D. Don (BFC) is a precious wild herb of Liliaceae that grows in the Tibetan area of China and the bulbs are used as a source of medicine. The shortage of germplasm resources restricts the development of traditional Chinese medicinal materials, so improved cultivation methods are urgently needed. The objective of this study was to study the effects of different substrates on the growth of F. cirrhosa seedlings. Sawdust and vermi-compost are common organic residues and were selected as nursery materials to supplement efforts to cultivate Fritillaria cirrhosa D. Don from ripe seeds and bulbs. The experiments were conducted in a plastic greenhouse in Ya’an of Sichuan Province from January to May 2013. Vegetative parameters of leaf length, leaf width, seedling fresh weight, seedling dry weight, and bulb size and fresh weight were measured. Additionally, the emergence ratio and preservation rate were calculated. The following results were obtained: (1) Sowing seeds of F. cirrhosa with 70% vermi-compost and 30% sawdust gave the best emergence rate, leaf length (60 days after seedling emergence, 60 DAS), and bulb dry weight (at harvest, 93 DAS). (2) The leaf nitrogen content (60 DAS) was positively correlated with the nitrogen content of bulbs (at harvest, 93 DAS). From the data, we concluded that forestry residues such as sawdust and vermi-compost can serve as excellent growing substrates of BFC seedlings.
Determination of pesticides in the source and drinking waters in Londrina, Paraná, Brazil
Authors: Souza Laura Fernanda Condota Borba de , Montagner Cassiana Caroline , Almeida Mariana Bortholazzi , Kuroda Emília Kiyomi , Vidal Cristiane , Freire Roberta Lemos
Published: June 2019

The Brazilian agricultural model is based on the intensive use of pesticides. Once in the environment, these compounds might target hydric sources, mainly through soil lixiviation or during crop application, exposing water biota as well as humans to contaminants. The objective of this research was identify the presence of 14 pesticides (ametrine, atrazine, azoxystrobin, carbendazim, carbofuran, clomazone, chlorpirifos, diuron, hexazinone, imidacloprid, malathion, simazine, tebuconazole and tebuthiuron) in source water samples and drinking water samples from the city of Londrina, Paraná State, Brazil. 24 water samples were collected biweekly from December 2014 to October 2015. The sample preparation was done using Solid Phase Extraction (SPE) with 3 mL/500 mg C-18 cartridges. Pesticide determination was performed applying Liquid Chromatography tandem Mass Spectrometry (LC-MS/MS). The frequencies of detection of some compounds in source water were: atrazine (85%), azoxystrobin (95%), carbendazim (83%), diuron (75%), imidacloprid (95%), simazine (12%), hexazinone (4%), tebutiuron (4%) and tebuconazole (33%). In the water supply, the following were detected: atrazine (79%), azoxystrobin (95%), carbendazim (8%), diuron (83%), imidacloprid (95%), simazine (12%), hexazinone (4%), tebuthiuron (8%) and tebuconazole (33%). Some of these compounds are included in Brazilian legislation, and in these cases, the concentrations determined in this study varied between 241 and 7 ng L?¹, which were lower than the maximum allowable concentrations for each of the compounds.
Characteristics of the non-carcass components of steers fed different sources of dietary carbohydrates
Authors: Freitas Leandro da Silva , Brondani Ivan Luiz , Martini Ana Paula Machado , Callegaro Alisson Marian , Colvero Perla Cordeiro de Paula , Donicht Patrícia Alessandra Menegussi Metz , Pacheco Paulo Santana , Rodrigues Leonel da Silva , Moura Amanda Farias de , Domingues Camille Carijo
Published: June 2019

We evaluated the characteristics of the non-carcass components of 24 steers (Charolais × Nelore) fed different carbohydrate sources (ground corn, soybean hulls, or wheat bran) in the diet. The animals were 353.2 kg and 22 months of age at early termination, and had been fed forage consisting of sorghum silage at a forage:concentrate ratio of 40.2:59.8. The carbohydrate sources had no effect on the weights of the carcass, vital organs, and blood. The absolute weights of the intestines and rumen fat were higher (P < 0.05) in animals fed corn than in those fed soybean hulls or wheat bran (10.87 vs. 8.89 and 8.87 kg and 5.26 vs. 4.12 and 3.64 kg, respectively). The same pattern was observed when these organs weights were adjusted for empty body weight. The weight of the omasum was highest (P < 0.05) in the wheat bran-fed animals (6.02 vs. 4.70 and 5.49 kg in the corn- and soybean hull-fed animals, respectively). Animals fed soybean hulls had a higher absolute weight of kidney fat (1.6 kg) than steers receiving wheat bran (1.06 kg) or corn (0.79 kg). Wheat bran gave the highest leg weight compared with corn and soybean hulls (2.46 vs. 2.22 and 2.23 kg per 100 kg of empty body weight, respectively).
Production of annual ryegrass with different doses of nitrogen fertilization in topdressing
Authors: Bolke Delvacir Rezende , Haygert-Velho Ione Maria Pereira , Timm Luiz Carlos , Alessio Dileta Regina Moro , Mittelmann Andréa , Ferreira Otoniel Geter Lauz , Lima Luís Henrique Corteze , Velho João Pedro
Published: June 2019

The objective of this study was to assess the growth of annual ryegrass (Lolium multiflorum) cv. BRS Ponteio with different doses of nitrogen applied in the pasture, thereby adjusting their growth to the exponential growth model. A randomized block design was used with five nitrogen application rates (0, 150, 250, 350, and 450 kg N ha-1) and four replicates, applied in installments. Each plot measured 9 m2. On April 15, 2014, 25 kg ha-1 of viable pure seeds of annual ryegrass were sown at a depth of 0.02 m, in 18 rows spaced at 0.17 m in each plot. Growth in the control treatment (zero nitrogen) pasture lasted 167 days with only three cuts, whereas in pastures treated with 350 and 450 kg N ha-1, growth was extended for an additional 45 days with a 333% increase in the number of cuts. The pastures were used for the same duration (188 days) in the treatments with 150 and 250 kg N ha-1, however, increased nitrogen resulted in two additional cuts and a shorter time interval between cuts. The time interval between each cut and the degree-days interacted dynamically causing distinct growth. Growth of the annual ryegrass BRS Ponteio without nitrogen application is poor and cannot be represented even by a first order linear model. The application of nitrogen topdressing, in the form of urea, decreases the time interval between cuts, increases the dry matter production per hectare, stimulates this production, and follows the exponential growth model.
Molecular survey of Babesia vogeli and Hepatozoon species in dogs from urban area of Midwestern Brazil
Authors: Maia Maerle Oliveira , Freitas André Luís Santos de , Santos Jamila Guimarães , Pacheco Thábata dos Anjos , Ramos Dirceu Guilherme de Souza , Silva Glaucenyra Cecília Pinheiro da , Dutra Valéria , Aguiar Daniel Moura , Pacheco Richard Campos
Published: June 2019

In Brazil, the most important tickborne pathogens affecting dogs include Babesia vogeli, Ehrlichia canis, Anaplasma platys, Hepatozoon canis, and Mycoplasma haemocanis. Babesia spp. and Hepatozoon spp., transmitted by ixodid ticks, have been reported to naturally infect dogs and are widespread. The authors aimed to investigate the incidence of B. vogeli and Hepatozoon spp. infection using molecular methods to identify factors associated with the infection in dogs from urban areas of Cuiabá municipality, Midwestern Brazil. Polymerase chain reaction (PCR) assay revealed a prevalence of 9.36% (Confidence Interval-CI 95%; 2.72%; 6.79%) and 9.61% (CI 95%; 7.0%; 13.0%) among dogs for B. vogeli and Hepatozoon, respectively. DNA sequences obtained from 10 Hepatozoon PCR positive samples were sequenced and were identical to one another and, moreover, were 100% (541/541 base of pairs-bp) homologous to the corresponding 18S rDNA sequences of H. canis. Twenty-five dogs (6.02%) generated amplicons using PCR protocols for both organisms, indicating co-infection by these two protozoans. To the best of our knowledge, our study was the first molecular survey to consider the entire population of dogs from the study area. Moreover, young dogs (0-12 months of age), as well as animals living in walled houses?without access to the street?were more susceptible to infection with B. vogeli and H. canis, respectively.
Seroconversion attributable to vaccination of heifers with the strain B-19 of Brucella abortus
Authors: Santos Alessandro José Ferreira dos , Almeida Katyane de Sousa , Baptista Francisco , Silva Marco Augusto Giannoccaro da , Alexandrino Bruna , Ferreira Jardel Martins
Published: June 2019

Bovine brucellosis is transmitted by Brucella abortus and causes considerable economic losses to agribusiness. To determine the seroconversion rate attributable to vaccination of heifers with B. abortus strain B-19, 330 blood serum samples from 110 heifers aged three to eight months from five properties in the municipality of Araguaína, Tocantins, Brazil, were analyzed. On day zero (D-0), blood samples were collected, and 55 heifers from the intervention group were vaccinated. The remaining blood samples were collected on days seven (D-7), 14 (D-14), and 21 (D-21). The serum samples were analyzed using the buffered acidified plate antigen (BAPA) test. The rate of seroconversion attributable to vaccination was calculated by subtracting from the seroconversion incidence rate in the intervention group the incidence rate of the control group. On D-0, 100% (110/110) of the heifers were negative in the BAPA test (95% CI [96.70 - 100%], p < 0.05). On D-7, the seroconversion rate was 94.55% (52/55) (95% CI [84.88 - 98.84%], p < 0.05) in the intervention group and 0% (0/55) (95% CI [0.00 - 6.49%], p < 0.05) in the control group. On D-14, the rate was 98.18% (54/55) (95% CI [90.28 - 99.95%], p < 0.05) in the intervention group and 0% in the control group. Therefore, seroconversion attributable to vaccination varied from 78.39% (84.88 - 6.49%) to 92.35% (98.86 - 6.49%) on D-7 and from 83.79% (90.28 - 6.49%) to 93.46% (99.95 - 6.49%) on D-14, respectively. On D-21, the seroconversion rate in the 55 heifers from the control group vaccinated on D-14 was 100% (55/55) (95% CI [93.51 - 100%], p < 0.05) but was not significantly different (p > 0.05) from that of heifers from the intervention group vaccinated on D-7. The results of this study allow making recommendations to the Official Veterinary Service on establishing a vaccination audit, with random collection of blood samples starting on day seven after vaccination in heifers considered vaccinated with B. abortus strain B-19 using the BAPA test as a diagnostic test and considering a minimum seroconversion rate of 75% to evaluate vaccination against brucellosis.
Reinsurance Pricing of Large Motor Insurance Claims in Nigeria: An Extreme Value Analysis
Authors: Chukwudum Queensley C.
Published: June 2019

Reinsurance is of utmost importance to insurers because it enables insurance companies cover risks that they, under normal circumstances, would not be able to cover on their own. An insurer needs to be able to evaluate his solvency probability and consequently, adjust his retention levels appropriately because the insurer’s retention level plays a vital role in determining the premiums he will pay to the reinsurer. To illustrate how Extreme Value theory can be applied, this study delves into modelling the probabilistic behaviour of the frequency and severity of large motor claims from the Nigerian insurance sector (2013-2016) using the Negative Binomial-Generalized Pareto distribution (NB-GPD). The annual loss distribution is simulated using the Monte Carlo method and it is used to predict the expected annual total claims and estimate the capital requirement for a year. Pricing of the Excess-of-loss (XL) reinsurance is also examined to aid insurers in optimizing their risk management decision in regards to the choice of their risk transfer position.
Programar é poder: contradições entre as dimensões comunicacional e tecnológica da criptografia de ponta-a-ponta do WhatsApp
Authors: Santos Marcelo , Faure Antoine
Published: June 2019

Este estudo analisa criticamente a implementação da criptografia de ponta-a-ponta no aplicativo de mensageria instantânea WhatsApp, suportado pela teoria das affordances, empiricamente desenvolvido em base ao framework “biografia de plataformas”. Depois de apontar as contradições com as evidências levantadas, concluímos que a implementação deve ser interpretada como um movimento estratégico inserido em: (i) uma tática de guerrilha de Relações Públicas do WhatsApp Inc. contra estados nacionais em que se revela (ii) a programação como uma demonstração de poder da corporação de mídia digital para evitar conflitos políticos com os mesmos em que subsiste (iii) um balanço tipo custo-benefício em que prima a massividade comercial em detrimento da utopia tecnológica.
O lugar da produção e consumo em circuitos curtos
Authors: Oliveira Émerson Dias de
Published: June 2019

O descaso e desinteresse que os elementos humanos e as localidades têm recebido nos últimos tempos decorrem da intensa centralidade atribuída ao sistema financeiro mundial, uma estratégia que envolve todos os intencionamentos em proveito da insaciável ânsia pelo lucro, sendo que a sociedade como um todo acaba por ficar secundarizada em relação as vontades do capital. Neste sentido, o presente estudo trouxe como proposta um debate envolvendo a importância que a iniciativa popular possui entremeio a essa problemática, com destaque para a produção e consumo na forma de circuitos curtos, pautando na autenticidade e protagonismo dos agentes locais. Foi usado de recursos bibliográficos em estudos e debates já elaborados sobre a temática. O sentido aqui proposto resumiu-se em posicionar os circuitos curtos como mais uma ferramenta social nesta ambiciosa missão de elevar a importância da sociedade ao mesmo patamar com que o capital está dimensionado na contemporaneidade. O intento não foi descaracterizar ou desconsiderar a importância que os circuitos longos de produção e consumo possuem, mas apenas discutir a importância que os circuitos curtos possuem na emancipação social dos sujeitos e desenvolvimento socioeconômico dos lugares, pois é perfeitamente exeqüível uma estruturação social que considere e permita a existência equilibrada destes dois tipos de circuitos produtivos e de consumo.
A gestão do conhecimento sobre os canais de autoatendimento de uma cooperativa de crédito
Authors: Schneider Cristiane Weschenfelder , Santos Leandro Dorneles dos , Scherer Flavia Luciane , Polacinski Edio
Published: June 2019

Cooperativas de crédito têm diante de si, um grande desafio no aperfeiçoamento e investimento em tecnologia, relacionando-se aos canais de autoatendimento e, quanto ao preparo das pessoas para desenvolver este conhecimento. O objetivo desta pesquisa foi analisar a gestão do conhecimento dos colaboradores de uma cooperativa de crédito, sobre canais de autoatendimento oferecidos aos seus associados, verificando necessidade de melhorias ao setor de gestão de pessoas, relacionadas à capacitação dos mesmos. A metodologia de pesquisa utilizada foi exploratória e descritiva, com análise quantitativa dos dados e, com técnicas de pesquisa bibliográfica e estudo de caso, coletando os dados através de um questionário aplicado a funcionários de Caixa e Assistentes de Atendimento. Os resultados alcançados apresentam a importância do conhecimento, a busca pela atualização e também da disseminação aos associados quanto ao uso dos canais alternativos e, também, as dificuldades existentes e necessidades de melhorias tecnológicas quanto às ferramentas e treinamento.
Análise das cooperativas de agricultores familiares atendidas pelo projeto de ATER "Mais Gestão" no estado do Paraná
Authors: Gregolin Marcos Roberto , Gregolin Graciela Caroline , Zonin Valdecir José , Zonin Wilson João
Published: June 2019

A gestão de cooperativas é considerada complexa, haja vista os interesses diversos bem como a tripla expectativa dos cooperados, pois são ao mesmo tempo, clientes, donos e fornecedores. Este estudo teve por objetivo diagnosticar as práticas de gestão de 25 cooperativas da agricultura familiar do estado do Paraná atendidas pelo programa "Mais Gestão", do Ministério do Desenvolvimento Agrário-MDA. O estudo, de caráter documental, foi realizado tendo por base o pré-diagnóstico e a "Matriz de Identificação Estratégica" e mapeou o panorama da Gestão Organizacional; Gestão de Recursos Humanos; Finanças e Custos; Comercialização e Marketing; Gestão Industrial e Gestão Ambiental. Constatou-se que na Gestão Organizacional estão as maiores dificuldades pois em 76% das cooperativas a subárea estrutura organizacional possui desempenho "ruim". Conclui-se que as cooperativas da agricultura familiar estudadas precisam de maior apoio e incentivo na área de gestão organizacional, não se subtraindo, porém, a necessidade de apoio nas demais áreas.
Impacto socioeconômico das cooperativas: contribuição para um mundo melhor
Authors: Ouro-Salim Omar , Ba Serigne Ababacar Cisse , Rosalem Vagner
Published: June 2019

Os cooperados face ao movimento capitalista precisam se posicionar melhor através de seus valores e finalidades. Assim, para se colocar no debate atual, o movimento cooperativo deve consolidar seus próprios fundamentos na recuperação de sua visão original do ser humano. O movimento cooperativo deve manifestar concretamente seu posicionamento na comunidade. Em um contexto de globalização, os desafios não são mais apenas econômicos, mas sim sociais. A cooperativa não é somente uma organização econômica original, mas uma escola humanista que deve contribuir para posicionar o cooperado como uma pessoa e como cidadão em um mundo dominado pela ignorância humana. O objetivo desta pesquisa é apresentar uma reflexão sobre o paradigma cooperativo através de uma abordagem metodológica e teórica, permitindo assim uma melhor compreensão dos valores, dos fundamentos cooperativos e também das contribuições socioeconômicas do movimento cooperativista no mundo. Essa atividade pode levar à possível modelização do paradigma cooperativo
Espelho, espelho meu
Authors: Souto Valquíria Toledo , Terra Marlene Gomes , Roso Adriane Rubio , Beck Carmem Lúcia Colomé , Silva Adão Ademir da
Published: June 2019

Objetivo: analizar la percepción de personas que usan drogas acerca de su autoimagen y las repercusiones sociales de dichas percepciones. Método: investigación cualitativa llevada a cabo con 16 usuarios de un Centro de Atención Psicosocial Alcohol y otras drogas de un municipio de la región central del estado de Río Grande do Sul. Los datos fueron producidos durante cinco encuentros de grupos, siguiendo la metodología de la problematización con el arco de Charles Maguerez. Resultados y discusión: del análisis de datos surgieron temas que dieron lugar a las siguientes categorías: uso de drogas y los reflejos en la autoimagen; repercusiones sociales que implican estar usuario de drogas. La autoimagen construida por estas personas incluye sentimientos de auto desvalida, problemas con la autoestima y el autocuidado. Estos individuos viven en un contexto social arraigado en el prejuicio y el estigma de forma tal que adoptan estereotipos negativos para ellos mismos. Recomendamos que en los lugares dónde los usuarios busquen tratamiento se fomente el que vuelvan a quererse, a valorar los pequeños logros, a reconquistar lazos de afecto, reconstruir su dignidad, autoconfianza y autoestima. Consideraciones finales: se realza también el reto para los profesionales de salud de comprometerse con la lucha por la desconstrucción de conceptos que aumentan el estigma social y la necesidad de promocionar la participación social de los usuarios de drogas en la lucha por políticas públicas y practicas que legitimen su condición de ciudadanía.
Contribuição de educação permanente semipresencial no conhecimento de enfermeiros sobre estomias intestinais de eliminação
Authors: Monteiro Ana Karine da Costa , Mendes Isabel Amelia Costa , Pereira Maria do Carmo Campos , Gouveia Márcia Teles de Oliveira , Andrade Jesusmar Ximenes , Andrade Elaine Maria Leite Rangel
Published: June 2019

Objetivo: evaluar la contribución de un programa de educación permanente semipresencial al conocimiento de los enfermeros sobre los estomas intestinales de eliminación. Método: estudio cuasi-experimental, tipo grupo único, antes y después, realizado con 51 enfermeros de tres hospitales grandes de Piauí, entre agosto y octubre de 2014, en las siguientes etapas: identificación de enfermeros, exposición de objetivos e invitación para participar en la investigación, prueba preliminar, programa de educación permanente semipresencial y prueba posterior. Resultados: el promedio del número de respuestas correctas en la prueba preliminar de 25,5 (dp=4,2) era inferior al de la prueba posterior 31,5 (dp=3,0) y esa diferencia era estadísticamente significante (p=0,000). Conclusión: en este estudio, el programa de educación permanente semipresencial contribuye a mejorar el conocimiento de los enfermeros sobre los estomas intestinales de eliminación.