bluuebunny/crossref_metadata_2025_split huggingface dataset:
Optimization of palm methyl ester and its effect on fatty acid compositions and cetane number
Authors: Satya Sharath , Kolakoti Aditya , B. Naga Raju , R. Shyam Sundar , Rao Ranga 
Published: March 2019

This paper proposes the Taguchi based optimization technique for the production of biodiesel from palm oil. For this purpose, L9 orthogonal array was successfully used for better yield estimation by using Minitab-18 software. Different process variables like molar ratio, catalyst concentration, reaction time and reaction temperature were studied. A predicted yield of 92.06 % was achieved by regression analysis by maintaining the process variables of molar ratio 5:1 (methanol to oil), 4 grams of catalyst concentration (NaOH), 180 minutes of reaction time and 44°C of reaction temperature. Experimentations were conducted on the same process variables and achieved a yield of 91.65 %. By this it is clear that both experimentation and regression analysis by Taguchi are in good agreement with an error of 0.41 % which may be acclaimed as experimental error. The fatty acid compositions (FAC) were also analyzed and it is found that 37.12 % saturated and 62.88 % unsaturated fatty acids present in the palm methyl ester (PME). By using the FAC of PME the Cetane number was predicted as 55.38. The predicted Cetane number from FAC tally with experimental Cetane number. The PME is characterized for different fuel properties by following the international standards. And it is concluded that catalyst concentration and reaction temperature are the important parameters which influence PME yield, Taguchi based optimization technique will helps in predicting the maximum yield with minimum number of experiments.
Green Building with Nature Concept on Lakeside Resort Design
Authors: Wasilah Wasilah , Hildayanti Andi , Hamzah Hamzah 
Published: March 2019

The natural condition of Matano lake is heavily scenic includes the land, water, air, energy, and reasonably required to preserve. Exploration in the resort design with green building and design with nature concept is one of preservation effort to maximize the natural potency of the area based on the aspect of environment, socio-economics, and sociocultural. The method in the design process involve a green building and design with nature principles implementation in the site plan, structural design, natural energy to maintain the building thermal and natural lighting, and reuse rainwater management to optimize the resort function, green materials and prevent the residual material. The result explained the lakeside resort based on green building and design with nature principles increase the aesthetic potential view and environmental sustainability of Matano lake.
Kontribusi Kepemimpinan Kepala Sekolah, Motivasi Kerja,dan Iklim Sekolah terhadap Kinerja Guru
Authors: Subandi Subandi 
Published: March 2019

This study aims at determining the contribution of school principal leadership, work motivation and school climate to the performance of elementary school teachers at Cluster IV District of Baturiti Tabanan Bali. This research was an ex-post facto research. The population which as also treated as the sample in this study were 61 teachers. Data in this study were collected by using questionnaires. Data analysis was performed by using simple regression, multiple regression, and partial correlation. The results showed that: (1) there was a significant contribution of headmaster leadership to the performance of elementary school teachers, (2) ) there is a significant contribution of teacher's work motivation to the performance of elementary school teacher; (3) there is significant contribution of work climate on the performance of elementary school teachers, and (4) together, there is a significant contribution of principal leadership, motivation work and work climate on the performance of elementary school teachers.
Correlation Between Fracture Azimuth, Surface Lineaments and Regional Tectonics: A case study from Belik District, Central Java, Indonesia
Authors: Syahputra Reza , Sihombing Felix Muria Hasudungan , Prasojo Octria Adi 
Published: March 2019

Two major strike-slip faults with northeast-southwest and northwest-southeast orientation have shifted the southern Central Java, including Belik District. Consequently, many smaller faults that have the same direction as the major faults and west-east direction folding systems were emerged. The orientation of these geologic structures could be observed from morphological features such as ridge and river. A quantitative approach was carried out to unravel the impacts of those geologic structures on the geomorphology of the study area, which is located between Slamet Mountain and Sindoro Mountain, Central Java province. The method used in this research was the structural geology analysis, including the interpretation of ridge and river lineament, the distribution of fractures, and statistical analysis. The research location is divided into four different segments based on its lineament and morphology. The lineament that has similar characteristics was tested using normality test of Kolmogorov-Smirnov. The Spearman test was used to obtain the correlation between surface lineament and fracture azimuth. All fracture azimuth, ridges and rivers tend to have northwest-southeast and northeast-southwest direction. These results show similar direction with strike-slip regional structural pattern. The statistical calculation and field observation indicate the influence of external factor on the change of the study area’s landform.
Apresentação
Authors: Feijo Jerciano Pinheiro 
Published: March 2019

É melhor escrever errado a coisa certa do que escrever certo a coisa errada...Patativa do Assaré Se ainda vivo fosse, estaria o poeta que cantou o sertão dizendo que estamos escrevendo errado e pior, da forma errada.Os últimos 4 anos foram de intensa luta no campo da educação e do mundo trabalho, momento de retrocesso, que só não é mais acelerado em razão da resistência – palavra que virou mantra -, dos grupos progressistas tanto no Brasil quanto no mundo. De um lado a profunda crise do capital iniciada em 2008 ainda não se dissipou, de outro, muitos governos progressistas na América Latina começaram a desmoronar. Culpa de suas próprias fraquezas ao não romper com o modus operandi do sistema capitalista, está claro: reformas não são suficientes, é necessária uma transformação radical de toda a sociedade.
Subtalar arthrodesis
Authors: Paiva Jim , Mansur Henrique , Coimbra Túlio Vieira , Castro Junior Isnar Moreira 
Published: March 2019

Objective: To evaluate whether there is a difference in the fusion rates of subtalar arthrodesis using one or two compression screws. Methods: A retrospective study evaluated the fusion rate of patients subjected to subtalar arthrodesis between January 2012 and December 2016. Fusion was determined clinically using radiographs and, in the case of doubt, computed tomography. Results: The final sample consisted of 80 patients, 78.8% of whom were male, and the mean final evaluation time was 23.27 months. Subtalar arthrosis due to a calcaneal fracture was the etiologic factor in 95% of the patients. The group subjected to arthrodesis with one screw represented 68.75% of the patients, and the group with two screws represented 31.25% of the patients. The incidence of nonfusion was 10.9% in the group where one screw was used against 4.0% in the group where two screws were used, without statistical significance (p-value = 0.425). Conclusion: The use of a second screw did not improve the fusion rates of subtalar arthrodesis. Level of Evidence III; Therapeutic Studies; Retrospective Comparative Studies.
Outcomes of plantar fasciotomy to treat plantar fasciitis
Authors: Huyer Rodrigo Guimarães , Bittar Cíntia Kelly , Castro Filho Carlos Daniel Candido de , Mattos Carlos Augusto , De Cillo Mário Sérgio Paulillo , Ribeiro João Henrique Tavares 
Published: March 2019

Objective: This study sought to evaluate the effectiveness of a surgery (plantar fasciotomy) to treat plantar fasciitis using the American Orthopedic Foot and Ankle Society (AOFAS) questionnaire. Methods: Patients were retrospectively identified using their postoperative orthopedic (medical) records after receiving medial plantar fasciotomy for plantar fasciitis between 1997 and 2009. Results: A significant difference was observed between the pre- and postoperative AOFAS score; this result indicates that patient health improved after the fasciotomy to treat plantar fasciitis. Conclusions: A strength of this study was its long follow-up time of patients undergoing plantar fasciotomy to treat plantar fasciitis. This surgery is indicated for patients with chronic plantar fasciitis after 6 months without response to conservative treatment. Level of Evidence IV; Therapeutic Studies; Case Series.
Outdoor Testing of a Zig-Zag Solar Air heater with and without Artificial Roughness on Absorber Plate
Authors: Mahdi Mahmoud Maustafa , Gaddoa Ameer Abed 
Published: March 2019

In this paper, thermal performance of a zig-zig solar air heater (ZZSAH) with and without using steel wire mesh on the absorber plate of the collector is experimentally investigated. The experimental work includes four inclination angles of the collector 20o, 30o, 45o, and 60o and four air mass flow rates of 0.03, 0.04, 0.06, and 0.08 kg/s under varieties of operating conditions of a geographic location of Baghdad. New correlation equations of Nusselt number are obtained from experimental results for both types of collectors where the effect of varying of the inclination angle of collector taken into consideration in the experiment. The correlations show good agreement with the present experimental data. In addition, the effects of mass flow rate and temperature rise across the efficiency of collector air heater are investigated. The results reveal that the efficiency of (ZZSAH) at 45o inclination angle reaches the highest values among other degrees of inclination angles for both types of collectors under study. The results also show that the addition of wire mesh magnifies the effect of inclination angle.
Occupational diseases of peripheral nervous system in Bashkortostan Republic
Authors: Karamova L. M. , Shaikhlislamova E. R. , Basharova A. V. , Vlasova N. V. 
Published: March 2019

Introduction. Multiple studies of health state of workers in various economic branches of Russia revealed that peripheral nervous system diseases are among the most prevalent disorders. Th eir prevalence varies from 32.3 to 58 diseases per 100 examined workers, and they occupy usually fi rst place in the morbidity structure. Th ey are leaders among occupational diseases also. Objective. To determine features of occupational morbidity with peripheral nervous system diseases and its structure among workers in various economic branches of Bashkortostan Republic. Materials and methods. Th orough analysis covered occupational morbidity with peripheral nervous system diseases by separate branches, workers who are directly exposed to occupational hazards. Specifi c levels of the morbidity are defi ned by occupations, length of service in each economic branch. Results. Over 100 cases of occupational diseases are annually registered in Bashkortostan Republic. Over a half of them (54%) are diseases of peripheral nervous system. Th eir share among all occupational diseases tends to increase. Th e most prevalent type of peripheral nervous system diseases are radiculopathy (0.29 cases) and vibration disease (0.14 cases per 10,000 workers). Nearly all occupational diseases of peripheral nervous system are diagnosed in machinery building, metallurgic, mining, oil extracting industries, agriculture and building industry. In these economic branches, average of 16.59 cases per 10,000 workers exposed to occupational hazards is assigned to occupational peripheral nervous system diseases. Occupational diseases of peripheral nervous system diagnosed at average length of service of 23,3±3,4 years. Th e study results helped to determine specifi c economic branches associated with peripheral nervous system disorders development. At the highest risk of peripheral nervous system disorders are workers of mining (20,8‰0) and metallurgic (10,6‰0) industries. Conclusions. Peripheral nervous system diseases are the main causes of occupational morbidity, detailed according to specifi c economic branches and occupational groups, should be a basis of particular measures on lower impact of occupational risk factors, on prevention, health preservation, occupational and medical rehabilitation of the diseased.
Immunoassay of antibodies to benzo[a]pyrene for lung cancer risk diagnosis among coal-mining workers
Authors: Glushkov A. N. , Polenok E. G. , Kostyanko M. V. , Titov V. A. , Vafin I. A. 
Published: March 2019

Th e authors detected association of G-class antibodies specifi c to chemical carcinogen benzo[a]pyrene (IgG-Bp) with lung cancer in healthy men not working at coal mines. Objective — to reveal possibilities of immunoassay of IgG-Bp in evaluating risk of lung cancer in coal mine workers. Th e study covered serum IgG-Bp in 501 miners aged under 60 (161 healthy, not working in mine; 239 miners; 101 patients with lung cancer), by means of non-concurrent immune-enzyme analysis using benzo[a]pyrene conjugates with bovine serum albumin as an antigen. Findings are that increased levels of IgG-Bp in lung cancer patients are more frequent (50.5%) than in healthy men not working in mine (37.2%, p=0.047, OR=1.7) and in miners (30.5%, p=0.0008, OR=2.3). Length of service in mines did not infl uence serum levels of IgG-Bp in coal industry workers. In the miners, with age adjustment consideration, OR for lung cancer equaled 2.0 (p=0.01), and with adjustment for smoking OR=2.3 (p=0.001). Occupational (work in mine), lifestyle (smoking) and endogenous (age) factors do not have signifi cant infl uence on intensity of individual specifi c reaction to benzo[a]pyrene in males. Immunoassay of IgG-Bp is recommended for lung canc er diagnosis in coal mine workers.
The Effect of Quality of Work Life Toward Job Performance and Work Satisfaction at Education Staff in Islamic University of Riau
Authors: Hasan Alfani Mufti , Hamzah Zulfadli 
Published: March 2019

The aim of this research is to analyze the effect of Quality of Work Life toward job performance and work satisfaction at education staff in Islamic University of Riau. This research employs descriptive method and quantitative approach. This research also employs causality or influence relationship model. This research use SEM (Structural Equation Model) Analysis and Partial Least Square (PLS) for data analysis. The results of this research conclude that are: 1) Quality of Work Life affects to the performance of employees with path coefficient value is 0.220147 and t value is 4.91345 (t table 1,97202). It means that the education staff who have a high Quality of Work Life will be able to increase their performance. 2) Quality of Work Life also affects to the job satisfaction with path coefficient value is 0.5787916 and t value is 12.802941 (t table 1,97202). It means that the education staff who have high Quality of Work Life will be able to improve their performance, and 3) Quality of Work Life also affects to the education staff performance with the mediation of work satisfaction with path coefficient value is 0.219740 and t value 6.582756 (t table 1,97202). It means that the education staff who have Quality of Work Life also have high work satisfaction as mediation and will also improve their performance. Further research, it need more variables to analyze for improving the Quality of Work life and education staff performance.
EL PROCESO JURÍDICO POLÍTICO DE LA DESAMORTIZACIÓN DE BIENES DE MANOS MUERTAS EN COLOMBIA, 1766-1887
Authors: De la Cruz Vergara Maribel 
Published: March 2019

El artículo muestra que la desamortización de bienes de manos muertas fue un proceso jurídico político instaurado por la monarquía española en la segunda mitad del siglo XVIII y que pervivió en el siglo XIX con las mismas características. Para tal fin se presentan los argumentos desamortizadores de los teóricos de Carlos III y la ejecución del proceso por Carlos IV en España y América. Se pone de manifiesto también los argumentos políticos jurídicos que a través del siglo XIX esgrimieron los gobernantes para utilizar esta práctica como la predilecta para solucionar el déficit fiscal y la modernización del estado a través de la desconcentración de la tierra que estaba en calidad de mano muerta y la puesta en circulación de la misma en el mercado. Al final se establecen los elementos comunes de la desamortización en los episodios de 1766 de 1804 y de 1861 y como el conflicto con la iglesia por la desamortización de sus bienes se soluciona con la constitución de 1886 y la firma del concordato con el papado roman en 1887.
Simulation of Ammonia Nitrogen Removal from Simulated Wastewater by Sorption onto Waste Foundry Sand Using Artificial Neural Network
Authors: Faisal Ayad A. H. , Naji Laith A. 
Published: March 2019

The present study investigated the removal efficiency of ammonia nitrogen from simulated wastewater by waste foundry sand based on 120 batch experiments which were modeled by three-layer artificial neural network technique. Contact time (5-120 min), pH of the aqueous solution (3-10), concentration (400-600 mg/L), sorbent dosage (20-120 g/100 mL) and agitation speed (50-250 rpm) were studied. Results showed that the best values of the above parameters were time of 90 min, pH= 10, 400 mg/L, dosage of 90g/100 mL and 200 rpm respectively with removal efficiency equals to 95%. The sorption process was described in a good manner using ANN model which consisted of the tangent sigmoid and linear transfer functions at hidden and output layers respectively with 8 neurons and the maximum sorption capacity was 0.9 mg/g. The sensitivity analysis signified that the relative importance of contact time equal to 36.9% and it is the influential parameter in the sorption of ammonia nitrogen. However, the relative importance of other parameters was agitation speed of 27.43%, WFS dosage of 17.32%, pH of 9.86% and initial concentration of 9.39%.
A New Mathematical Analysis of Two–Plane Balancing for Long Rotors without Phase Data
Authors: Al Abbood Mohammed Tariq Sulaiman 
Published: March 2019

Two–plane balancing procedure is usually adopted to balance long rotors using both vibration amplitude and phase data. This paper presents a new mathematical analysis of two–plane balancing method for long rotors using vibration amplitude data only. This method requires eight test runs with two balancing planes nearby the bearings. The tests are performed by connecting a known trial mass to eight different positions individually; four at each plane, where each position being advanced ( ) from its previous. In this study, a comparison has been performed between the new mathematical analysis and another traditional analysis presented in a previous study. Firstly, two computer programs based on both analyses have been written using Language in order to compute the magnitudes and locations of the required balancing masses. Secondly, the comparison has been made using balancing simulator for rigid rotors where different sizes of rotors at different rotation speeds have been tested. This study showed that the two–plane balancing method based on the new analysis was always capable of performing a very high grades of balance while traditional analysis showed an observed restriction in achieving a good quality of balance for the rotors been tested.
Synthesis and characterization of Graphene produced from Iraqi date syrup
Authors: Makki Hasan Hasan , Alwan Hameed Hussein 
Published: March 2019

Graphene is a mono layer of hexagonal honey structure of carbon atoms. Iraqi date syrup was used as a carbon source for synthesis Graphene by expanded dehydration method, in which using of concentrated sulfuric acid as dehydration agent. The method name refers to expanded dehydration because of the increasing in volume with dehydration reaction. Characterization the prepared Graphene was done by FT-IR, XRD, SEM, AFM and UV-Visible techniques and compared with previous work. The final product was obtained by annealing at 600 °C or in other word thermal reduction to reduce all oxide groups combined with structure. Graphene XRD pattern shows wide peak at 002 plane centered at 2θ =23.758°, and d-spacing = 3.37 Å. AFM image shows that prepared Graphene in Nano sheets form. The method exhibit production yield about 9% and this is relatively high in comparison with other Graphene preparation methods.
Mercados municipales, escenarios de saberes ancestrales y turismo en la ciudad de Quito-Ecuador
Authors: Suárez Velasco Jenny Elizabeth , Paladines Gustavo Vladimir , Echarri Chávez Maité , Salinas Chávez Eros 
Published: March 2019

El turismo constituye una creciente actividad a nivel global. El visitar lugares geográficos distantes y diferentes se vuelva cada vez más usual en todo el mundo. Y existe una diversidad de atractivos que se promocionan con mayor fuerza como los de aventura, salud o cultura. Este último representa un interesante motivo para viajar a otro lugar y poder vivenciar la riqueza de otros pueblos. Parte de la cultura son las artesanías, gastronomía, alimentos, forma de hablar, tradiciones, saberes ancestrales, arte, etc.
En ese contexto, partiendo del hecho de que los mercados municipales constituyen un espacio de expresión de cultura y saberes ancestrales que, más allá de la gastronomía, ofrecen variados servicios y productos que muestran la idiosincrasia y tradición de los pueblos, la presente investigación constituyó un esfuerzo para analizar la participación de estos espacios de comercio minoritario, dentro del turismo cultural de la ciudad de Quito. Como parte de esta investigación cualitativa, se revisaron varios documentos de información y análisis, para evidenciar cómo está el turismo en Quito, cómo están los mercados, cómo se consideran los saberes ancestrales, cómo es la oferta gastronómica en la urbe, temas que sirvieron de base para el estudio.
Luego de presentar y analizar los temas abordados, se pudo concluir que los mercados municipales tienen un impacto en el turismo cultural de la ciudad, que son lugares que deben mejorar, a pesar de que las autoridades han empezado a efectuar cambios en algunos puntos como higiene y seguridad. Sin embargo, el atractivo de los mercados municipales es muchas veces la informalidad de cómo se comercia, la atención personalizada, la oferta diferenciada de otros lugares de expendio y gastronomía.
Además, se destacó la necesidad de cuidar la cultura local, los saberes ancestrales y la gastronomía como parte de la expresión del pueblo quiteño, para evitar que aquellos rasgos que manifiestan de manera única el acervo cultural, se pierdan con la llegada de nuevas maneras de hacer las cosas, muchas veces traídas con la globalización.