bluuebunny/crossref_metadata_2025 huggingface dataset:
Patient‐Centered Perspectives and Understanding of Peri‐Implantitis
Authors: Insua Angel , Monje Alberto , Wang Hom‐Lay , Inglehart Marita
Published: May 2017

Background: Patients undergoing dental treatment have an uncertain understanding about dental implant therapy and its complications. Therefore, the aims of this study assess the following: 1) level of knowledge, awareness, and attitudes about peri‐implantitis; 2) information provided by dentists/specialists who perform the treatment; and 3) perceptions, level of satisfaction, and impact on patient quality of life (QoL).

Methods: Patients with implant restorative therapy currently undergoing peri‐implant maintenance therapy were recruited. Participants completed an anonymous questionnaire that included general aspects of prognosis, including the following: 1) peri‐implantitis; 2) etiology; 3) awareness; 4) attitudes; 5) treatment; 6) prevention; 7) risk factors; 8) quality of information; 9) level of patient satisfaction; and 10) QoL. Associations among questionnaire data were identified using univariate and multivariate analyses.

Results: Overall, 411 implants were included from 135 patients with implants. Frequency of peri‐implantitis in the survey was 17.8% at the participant level, with 70% of them reporting high level of post‐surgical satisfaction. Worry and concern were frequent findings among patients with peri‐implantitis (64%), and 32% reported that living with the disease was terrible. The vast majority of patients (74.1%) did not have knowledge about peri‐implant pathology. Patients with peri‐implantitis showed statistically significantly better understanding of implant therapy (P <0.001) and also higher average concern (P = 0.004).

Conclusions: Patients generally have a poor understanding and perception of peri‐implantitis and its impact. QoL was impaired by the presence of peri‐implantitis with high level of concern and low level of therapeutic satisfaction. Therefore, it is important to develop standardized information brochures to educate patients on risk factors and indicators of the disease to assist in the prevention of peri‐implantitis.
Evidence for Recent Polygenic Selection on Educational Attainment and Underlying Cognitive Abilities Inferred from GWAS Hits: A Monte Carlo Simulation Using Random SNPs
Authors: Piffer Davide
Published: May 2017

Background: The genetic variants identified by three large genome-wide association studies (GWAS) of educational attainment were used to test a polygenic selection model. Methods: Average frequencies of alleles with positive effect (polygenic scores or PS) were compared across populations (N=26) using data from 1000 Genomes. A null model was created using frequencies of random SNPs. Results: Polygenic selection signal of educational attainment GWAS hits is high among a handful of SNPs within genomic regions replicated across GWAS publications. A polygenic score comprising 9 SNPs predicts population IQ (r=0.88), outperforming 99% of the polygenic scores obtained from sets of random SNPs (Monte Carlo p= 0.011). Its predictive power remains unaffected after controlling for spatial autocorrelation (Beta= 0.83). The largest polygenic score (161 SNPs) exhibits similar predictive power (Beta=0.8). Random polygenic scores are moderate predictors of population IQ (thanks to spatial autocorrelation), and their predictive power increases logarithmically with the number of SNPs, indicating an exponential reduction in noise. Conclusion: This study provides guidance for using GWAS hits together with random SNPs for testing polygenic selection using Monte Carlo simulations.
Improve Performance of Soy Flour Based-Adhesive with a Lignin Based Resin
Authors: Zhang Xiaochun , Zhu Yuding , Yu Youming , Song Jiangang
Published: May 2017

The aim of this study was to using a lignin based resin (LB) to improve the performance of the soy flour based adhesive. Soy flour (SF), polyamidoamine-epichlorohydrin (PAE), LB was used to develop a plywood adhesive. The solid content and viscosity of the adhesive, functional groups, thermo-stability, and crystallinity of the cured adhesive were characterized and the performance of the resultant adhesive was evaluated by fabricating three-ply plywood. Results showed using LB and PAE mixture to modify SF adhesive improves dry and wet bond strength by 66.3 and 184.2%. PAE contributed more for the wet bond strength improvement and the LB contributed more for the dry bond strength. The improvement was attributed to: 1) LB/PAE reacted with the functions of the soy protein and form a cross-linking network; 2) Polycondensation reaction between LB molecules further improved crosslinking density of the adhesive and formed a interpenetration structure with crosslinked protein; 3)The easy penetration of LB on wood surface and formed more interlock with wood. The denser structure created by LB and PAE mixture improved the thermal stability and decreased the crystallinity of cured adhesive. The usage of the LB and PAE mixture increased solid content by 35.5%, meanwhile, makes its viscosity acceptable for the industrial application.
Akwizycja planarna a SPECT/CT w detekcji węzłów wartowniczych w raku sutka
Authors: Jankowska Sylwia
Published: May 2017

Introduction: Sentinel lymph node biopsy is an increasingly popular method of breast cancer treatment. In order to determine the number and location of potentially positive nodes, it is necessary to perform sentinel node lymphoscintigraphy. The quality of the image depends on the use of the appropriate method of radionuclide imaging. The aim of this study was to compare the sensitivity of SPECT, SPECT/CT and classical planar acquisitions in the detection of sentinel lymph nodes for sentinel node lymphoscintigraphy in breast cancer. In addition, we tried to verify the usefulness of the morphological image obtained by SPECT/CT to specify their location.Materials and methods: We studied 62 women (mean age = 58 SD = 10.28) with histologically confirmed breast cancer (T0-2N0M0). Planar, SPECT and SPECT/CT images were interpreted separately in terms of the number and location of sentinel lymph nodes and lymphatic drainage direction.Results: Planar images detected 93 sentinel lymph nodes, while SPECT and SPECT/CT showed 114 nodes (about 22% more). In 15 (24%) patients SPECT imaging detected more sentinel lymph nodes than planar. Planar imaging was negative for the identification of sentinel lymph nodes in 6 (10%) patients. SPECT/CT images showed sentinel lymph nodes in all patients. The node to background ratio on the planar images was 11.6 on the SPECT 134.9 and on the SPECT/CT 147.5. The direction of lymphatic drainage and location of axillary lymph nodes were established only on SPECT/CT images.Conclusions: The use of SPECT imaging for sentinel node lymphoscintigraphy in breast cancer increases the sensitivity of sentinel lymph nodes detection. The use of low-dose CT as attenuation correction for SPECT images improves their contrast without a significant effect on the number of detected sentinel lymph nodes. It also brings important anatomical information, which is difficult or even impossible to determine by planar and SPECT images.
Energetic flexibility on wastewater treatment plants
Authors: Schäfer M. , Hobus I. , Schmitt T. G.
Published: May 2017

In the future, an additional potential of control reserve as well as storage capacities will be required to compensate fluctuating renewable energy availability. The operation of energy systems will change and flexibility in energy generation and consumption will rise to a valuable asset. Wastewater treatment plants (WWTPs) are capable of providing the flexibility needed, not only with their energy generators but also in terms of their energy consuming aggregates on the plant. To meet challenges of the future in regard to energy purchase and to participate in and contribute to such a volatile energy market, WWTPs have to reveal their energetic potential as a flexible service provider. Based on the evaluated literature and a detailed analysis of aggregates on a pilot WWTP an aggregate management has been developed to shift loads and provide a procedure to identify usable aggregates, characteristic values and control parameters to ensure effluent quality. The results show that WWTPs have a significant potential to provide energetic flexibility. Even for vulnerable components such as aeration systems, load-shifting is possible with appropriate control parameters and reasonable time slots without endangering system functionality.
Drug Delivery Systems For Anti-Cancer Active Complexes of Some Coinage Metals
Authors: Zhang Ming , Saint-Germain Camille , He Guiling , Sun Raymond Wai-Yin
Published: May 2017

Background:

Although cisplatin and a number of platinum complexes have widely
been used for the treatment of neoplasia, patients receiving these treatments have frequently suffered
from their severe toxic side effects, the development of resistance with consequent relapse.
In the recent decades, numerous complexes of coinage metals including that of gold, copper and
silver have been reported to display promising in vitro and/or in vivo anti-cancer activities as well
as potent activities towards cisplatin-resistant tumors. Nevertheless, the medical development of
these metal complexes has been hampered by their instability in aqueous solutions and the nonspecific
binding in biological systems.

Methods:

One of the approaches to overcome these problems is to design and develop adequate
drug delivery systems (DDSs) for the transport of these complexes. By functionalization, encapsulation
or formulation of the metal complexes, several types of DDSs have been reported to improve
the desired pharmacological profile of the metal complexes, improving their overall stability,
bioavailability, anti-cancer activity and reducing their toxicity towards normal cells.

Conclusion:

In this review, we summarized the recent findings for different DDSs for various anti-
cancer active complexes of some coinage metals.
Nutrition as a Health Determinant in Elderly Patients
Authors: Mastronuzzi Tecla , Grattagliano Ignazio
Published: May 2017

Background:

An adequate caloric intake is a major determinant for the health status
especially when degenerative conditions become a predominant risk for difficult-to-treat
diseases as in aging.

Methods:

A structured search of literature on the major databases was performed using terms as
nutrition, elderly and malnutrition.

Results:

According to most referenced articles, it appears to be unquestionable that both organic
and social risk factors [economic hardship, loneliness, institutionalization] are important as
determining causes of protein-caloric malnutrition. Some anthropometric, clinical and laboratory
parameters can help to make diagnosis and quantify malnutrition. However, most of them are
not cheap or are not simple to perform especially in the setting of General Practice. The
application of a simple questionnaire [Mini Nutritional Assessment, MNA] allows to obtain in a
fast, easy and non-invasive way a valid assessment of the nutritional status in geriatric patients.
The maintenance of the nutritional status is the best measure to counteract the risk of proteincaloric
malnutrition and its complications which often sneakily affects elderly population and in
particular frail patients.

Conclusion:

This review, based on updated concepts, examines all the above mentioned points
together with some aspects associated with malnutrition as an indicator of disease severity and
health costs in the elderly population. Finally, the impact of nutritional intervention and
nutrients supplementation on general indices of malnutrition are discussed as a promising
strategy.
An Innovative, Comprehensive Faculty Recruitment and Development Program at One U.S. Dental School: Early Results
Authors: Sabato Emily , DeCastro Jeanette E. , Fenesy Kim
Published: May 2017

Dental faculty recruitment and development are critical to replenish and cultivate sufficient and adequately prepared educators to educate future generations of dentists. At Rutgers School of Dental Medicine, the From Practice to Preceptor (FP2P) program, now in the last of its five years of funding from the U.S. Health Resources and Services Administration (HRSA), has an overall aim of recruiting, training, and retaining a diverse and well‐prepared dental faculty workforce. The FP2P program introduced novel methods for recruiting and preparing new faculty members since its goal is to help participants transition from being practicing dentists to becoming part‐ or full‐time faculty members. The recruitment and selection process has emphasized reaching community practitioners in general or pediatric dentistry, individuals from underrepresented groups, and those with a passion for teaching. The two‐year program with weekly meetings was designed to develop participants’ skills to meet the teaching, clinical, and administrative roles of dental faculty. The aims of this study were to determine if the program recruitment methods used would result in participants who were more ethnically and racially diverse than the school's current faculty and to determine if, after training, participants perceived they had increased knowledge, skills, and abilities in specified areas as compared to before training. Participants completed pre‐ and post‐program surveys assessing their perceived level of preparedness in critical competencies for dental faculty. Surveys were completed by 94% of participants in cohorts one through four; 75% (n=15) of cohorts two and three completed both the pre‐ and post‐program surveys, which were used for this analysis. Over 30% of the 35 participants to date were from an underrepresented group. Survey results suggest the participants increased their perceived preparedness in administrative, clinical, and educational competencies. Follow‐up is needed to ascertain how many go on to become dental educators and whether they are better prepared to succeed as new faculty compared to nonparticipants.
New Clinical Faculty Training Program: Transforming Practicing Dentists into Part‐Time Dental Faculty Members
Authors: Adams Brooke N. , Kirkup Michele L. , Willis Lisa H. , Reifeis Paul E.
Published: May 2017

At Indiana University School of Dentistry, a New Clinical Faculty Training (NCFT) program was created with the primary goals of informing new part‐time faculty members of clinical policies and assessment guidelines and thus developing qualified and satisfied faculty members. The aim of this study was to determine if participation in the training program improved the participants’ satisfaction and competence in comparison to their colleagues who did not participate in the program. Two cohorts were compared: a control group of part‐time faculty members who did not receive formal training when they were hired (n=21; response rate 58.3%); and the intervention group, who had participated in the NCFT program (n=12; response rate 80%). A survey of faculty members in the control group gathered information on their experiences when initially hired, and a pretest was administered to measure their knowledge of clinical policies. After the control group was given an overview of the program, their feedback was collected through post surveys, and a posttest identical to the pretest was given that found statistically significant increases on questions one (p=0.003) and four (p=0.025). In February 2014, 15 new faculty members participated in the pilot implementation of the NCFT program. Of those 15, 12 (the intervention group) completed follow‐up surveys identical to the pre survey used with the control group. Statistically significant differences were found for the factors clinical teaching (p=0.005) and assessment training (p=0.008) with better responses for the NCFT group. These results suggest that participation in the program was associated with improved clinical teaching knowledge and job satisfaction.
Factors Influencing Dental Students’ Interest in Advanced Periodontal Education: Perspectives of Department Chairs
Authors: Hearty Luke , Demko Catherine , Bissada Nabil F. , da Silva Andre Paes B.
Published: May 2017

The number of graduates of U.S. dental schools enrolled in U.S. postdoctoral programs in periodontics has been decreasing. The aims of this study were to determine the perspectives of periodontics department chairs regarding 1) features of a school's predoctoral curriculum that promote student interest in advanced periodontal education and 2) characteristics of a periodontal residency program that make it more attractive to dental students over other specialty programs. In 2015, a 14‐question survey was designed and sent to chairs of periodontics departments at all 65 U.S. dental schools at the time. Questions addressed number of instructional hours; specialty clinic rotations; elective courses; number of applicants to periodontal residency; existence of a residency program; length of the residency program; and externships, fellowships, and financial stipends offered. The survey response rate was 73.8%. The results showed that departments offering more than seven clinical credit hours in periodontics to predoctoral students had the greatest number of residency applicants. Most of the applicants were from institutions that offered specialty clinic rotations, elective courses, and residency programs in periodontics. The number of applicants did not change significantly if a stipend or fellowship was offered. However, the availability of an externship was significantly associated with a greater number of applicants (p=0.042). These results suggest that offering periodontal clinical rotations, elective courses, and especially externships in periodontics during predoctoral education may encourage more graduating students to pursue postdoctoral periodontal education.
Teaching Dental Students to Understand the Temporomandibular Joint Using MRI: Comparison of Conventional and Digital Learning Methods
Authors: Arús Nádia A. , da Silva Átila M. , Duarte Rogério , da Silveira Priscila F. , Vizzotto Mariana B. , da Silveira Heraldo L.D. , da Silveira Heloisa E.D.
Published: May 2017

The aims of this study were to evaluate and compare the performance of dental students in interpreting the temporomandibular joint (TMJ) with magnetic resonance imaging (MRI) scans using two learning methods (conventional and digital interactive learning) and to examine the usability of the digital learning object (DLO). The DLO consisted of tutorials about MRI and anatomic and functional aspects of the TMJ. In 2014, dental students in their final year of study who were enrolled in the elective “MRI Interpretation of the TMJ” course comprised the study sample. After exclusions for nonattendance and other reasons, 29 of the initial 37 students participated in the study, for a participation rate of 78%. The participants were divided into two groups: a digital interactive learning group (n=14) and a conventional learning group (n=15). Both methods were assessed by an objective test applied before and after training and classes. Aspects such as support and training requirements, complexity, and consistency of the DLO were also evaluated using the System Usability Scale (SUS). A significant between‐group difference in the posttest results was found, with the conventional learning group scoring better than the DLO group, indicated by mean scores of 9.20 and 8.11, respectively, out of 10. However, when the pretest and posttest results were compared, both groups showed significantly improved performance. The SUS score was 89, which represented a high acceptance of the DLO by the users. The students who used the conventional method of learning showed superior performance in interpreting the TMJ using MRI compared to the group that used digital interactive learning.
La música en la cultura y la evolución
Authors: Cross Ian
Published: May 2017

Al considerar las relaciones prospectivas entre la música y el pensamiento evolutivo es necesario articular claramente a qué nos referimos cuando usamos el término ‘música’. Las investigaciones antropológicas, y crecientemente, cognitivas y neurocientíficas, sugieren que el término posee una aplicabilidad amplia que va más allá de las con-cepciones convencionales de la música como mero entretenimiento. A través de las culturas, la música se presenta activa, interactiva e insertada en un rango amplio de actividades sociales; parece ser un rasgo tan “normal” como el lenguaje en la interacción humana. Sin embargo, a diferencia del lenguaje, los significados de la música, paradóji-camente, parecen ser naturales -la música parece significar lo que suena- y al mismo tiempo indeterminados en su fundación. Este capítulo argumentaráque esta paradoja está en el corazón del rol de la música en la interacción humana. Partiendo de la premisa de que la música se manifiesta en situaciones donde el foco está puesto en la interacción social como un fin en sí mismo (y no como un medio hacia un fin), se sugerirá que la música puede ser mejor conceptualizada como un medio de comunicación que posee rasgos que son óptimos para el manejo de situaciones de incertidumbre social. Se propondrá que puede darse cuenta de al menos algunos de los aspectos del significado en la música a través de su explotación de los mecanismos de comunicación que en otras especies subyacen al fenómeno de “señalización honesta”. Puede postularse que otras raíces de los rasgos del significado musical se hallan en las regularidades específicas de la especie que aparecen en el mapeo entre el afecto y la vocalización humana, mientras que otros emergen como el resultado de las dinámicas contingentes del proceso cultural. Así, la música incorpora dimensiones de significado múltiples con diferentes raíces evolutivas. La disponibilidad simultánea de las tres di-mensiones del significado musical dotan a la experiencia de la música de una intencio-nalidad flotante -la música parece tratar sobre ‘algo’, pero el objeto de ese ‘sobre algo’ es ambiguo-, mientras que la operación de sensibilidades comunicativas generales de la especie le permite a la música la apariencia de una “señal honesta”. Al mismo tiempo, los procesos cognitivos y de comportamiento que permiten que los humanos aliñen sus acciones y sonidos entre sí en el tiempo dentro de un marco de trabajo comúnmente experimentado de pulsos temporalmente regulares y que puede ser específico de los humanos imparten un sentido de afiliación mutua a la experiencia musical colectiva. La música puede ser concebida como un medio de comunicación que es tan vital como el lenguaje para la vida social humana y para las concepciones y compromisos de los humanos con la espiritualidad humana.
El error de Descartes y las tres venganzas de René. Introducción al Dossier Cognición Musical Corporeizada.
Authors: López Cano Rubén
Published: May 2017

Introducción al Dossier Cognición Musical Corporeizada.
Representación, Predicción y Música
Authors: Anta Juan Fernando
Published: May 2017

Las representaciones mentales ocupan un lugar clave en el ámbito de la Psicología Cognitiva. En este artículo se intenta avanzar sobre tres preguntas acerca del tema, con relación específicamente a la cognición musical: i) ¿cuál es el origen de las representaciones?; ii) ¿cómo se relacionan con la realidad externa?; y iii) ¿para qué sirven? De este modo se abordará el análisis de las relaciones existentes entre las representaciones y el complejo mentecuerpo, las representaciones y la realidad, y las representaciones y su función psicológica, respectivamente. Se argumenta que el ‘para qué sirven’, o su ‘función psicológica’, es el componente más significativo de las representaciones mentales, y también de las representaciones mentales específicamente musicales. Más precisamente, se propone que, más allá de su constitución, las representaciones están orientadas al futuro, y que su poder predictivo es la razón misma de su existencia psicológica. Un claro ejemplo de ello lo constituirían las representaciones que el oyente utiliza para predecir la música, las cuales, al ser frustradas, promoverían el contenido afectivo de la experiencia musical.
Improvisación musical y corporeidad. Acción epistémica y significado corporeizado
Authors: Assinnato María Victoria , Blas Pérez Joaquín
Published: May 2017

Este trabajo postula que el gesto realizado por un músico durante la performance puede involucrar un significado que se proyecte más allá del mero propósito de producir sonido. Se inicia con la revisión de un cuerpo de investigaciones que desarrollan el rol comunicacional del gesto en el habla y en la ejecución musical; desarrolla el concepto de gesto como acción epistémica (Kirsh y Maglio 1994; López Cano 2009; Pereira Ghiena 2009, 2010) y selecciona categorías que serán utilizadas para el análisis del gesto (Laban 1948 [1975]; McNeill 1992; Mauléon 2010). Posteriormente, analiza el gesto en la improvisación musical en un conjunto de improvisadores, incluyendo declaraciones que los músicos ofrecen en una entrevista luego de observar sus propios gestos en la improvisación. La discusión final gira en torno a (i) la posibilidad de que el gesto pueda ser pensado como una acción ineludible para el desarrollo de la performance, idea que podría ser asociada a la de acción epistémica, y (ii) la realidad de la experiencia musical como un todo indisociable, en el cual se construye el significado no solo a partir del sonido sino también del movimiento corporal que puede ser visto por el público y/o vivido por el mismo performer improvisador.
Survival Benefit of Transplantation with a Deceased Diabetic Donor Kidney Compared with Remaining on the Waitlist
Authors: Cohen Jordana B. , Eddinger Kevin C. , Locke Jayme E. , Forde Kimberly A. , Reese Peter P. , Sawinski Deirdre L.
Published: May 2017

Background and objectives

Use of diabetic donor kidneys has been a necessary response to the donor organ shortage. Recipients of diabetic donor kidneys have higher mortality risk compared with recipients of nondiabetic donor kidneys. However, the survival benefit of transplantation with diabetic donor kidneys over remaining on the waitlist has not been previously evaluated.

Design, setting, participants, & measurements

We performed an observational cohort study of 437,619 kidney transplant candidates from the Organ Procurement and Transplantation Network database, including 8101 recipients of diabetic donor kidneys and 126,560 recipients of nondiabetic donor kidneys. We used time-varying Cox proportional hazards modeling to assess the mortality risk of accepting a diabetic donor kidney compared with remaining on the waitlist or receiving a nondiabetic donor kidney.

Results

Among transplant recipients, median follow-up was 8.9 years and mortality rate was 35 deaths per 1000 person-years. Recipients of diabetic donor kidneys had 9% lower mortality compared with remaining on the waitlist or transplantation with a nondiabetic donor kidney (adjusted hazard ratio, 0.91; 95% confidence interval, 0.84 to 0.98). Although recipients of nondiabetic donor kidneys with a Kidney Donor Profile Index score >85% had lower mortality risk (adjusted hazard ratio, 0.86; 95% confidence interval, 0.81 to 0.91), recipients of diabetic donor kidneys with an index score >85% did not show any difference (adjusted hazard ratio, 1.09; 95% confidence interval, 0.97 to 1.22). Patients aged <40 years attained no survival benefit from transplantation with diabetic donor kidneys; diabetic patients at centers with long waitlist times attained the greatest survival benefit.

Conclusions

Diabetic donor kidneys appear associated with higher mortality risk compared with nondiabetic donor kidneys, but offer greater survival benefit compared with remaining on the waitlist for many candidates. Patients with high risk of mortality on the waitlist at centers with long wait times appear to benefit most from transplantation with diabetic donor kidneys.
¿Estudios culturales latinoamericanos? Reflexiones a partir de algunas antologías
Authors: Crespo Regina , Parra Daniela
Published: May 2017

El presente artículo pretende reflexionar sobre  la incidencia e importancia de los Estudios Culturales en América Latina a partir del análisis de las antologías que se publicaron entre 1998 y 2003, alrededor del tema. Se buscará entender la dinámica de organización de los grupos, la circulación de los autores, la importancia de su vinculación a universidades e institutos latinoamericanos o estadounidenses y se especulará sobre qué ocurre hoy en el ámbito de la discusión.
Inversión sísmica de datos pre-apilado mediante un algoritmo genético: Aplicado a Zona de Canales
Authors: Moncayo Edward , Tchegliakova Nadejda , Montes Luis
Published: May 2017

La Cuenca Llanos Orientales es la cuenca más prolífica de Colombia, sin embargo pocos “plays ” estratigráficos han sido explorados debido a la dificultad en determinar la litología de los canales existentes. Utilizando la información sísmica del área de estudio, se identificó un canal en la formación Carbonera la cual está compuesta por intercalaciones de lutitas y unidades arenosas altamente prospectivas, empero el desconocimiento de la litología arrojaba una alta incertidumbre respecto al tipo de reservorio del canal. Para determinar la litología del canal se propuso realizar una inversión sísmica en datos pre-apilado de una línea sísmica 2D disponible, sin embargo se tenía el inconveniente de la ausencia de información de pozo sobre esta línea, lo cual no permitía crear un modelo inicial confiable incrementando así la incertidumbre del resultado de la inversión. Para solucionar este problema se diseñó un algoritmo genético basado en el principio de AVO e independiente de la información de pozo. Este algoritmo tuvo un buen desempeño, tanto en datos sintéticos como reales y permitió obtener los datos necesarios para calibrar el modelo. De acuerdo con los resultados de la inversión y el análisis de física de rocas de algunos pozos de la zona, se identificó que la litología del canal corresponde a limolitas y lutitas, con probables niveles de arenas con alto contenido de arcilla. Este resultado indica un incremento del riesgo exploratorio ya que estas litologías se caracterizan por una baja porosidad y baja permeabilidad, lo que contrasta con los reservorios productores en los campos cercanos que est án compuestos por arenas limpias de alta porosidad.
Laser metal deposition of NiTi shape memory alloy on Ti sheet metal: Influence of preheating on dissimilar build-up
Authors: Scheitler Christian , Hentschel Oliver , Krebs Thomas , Nagulin Konstantin Yu. , Schmidt Michael
Published: May 2017

Lightweight and functional integration are two major drivers for additive manufacturing technologies. In order to integrate functionality, the use of smart materials like Nickel-Titanium (NiTi) shape memory alloys (SMAs) is a constructive approach. Generally, shape memory alloys are hard to machine and at the same time expensive materials. In this context, additive manufacturing processes like laser metal deposition are reasonable technologies to process these materials as the used powder can be recycled and near net shape geometry can be generated due to a layer-by-layer build-up process. For actuator applications, it might be reasonable to use hybrid systems, meaning just certain sections of a part are made of a shape memory material. One possible example is a NiTi shape memory element on a Ti sheet metal. Due to the varying coefficients of thermal expansion, a dissimilar build-up by means of laser metal deposition without any defects like cracks is challenging. In this paper, an approach that applies preheating is presented to generate SMA elements additively on dissimilar substrates by means of laser metal deposition. Subject of investigations are varying process parameter combinations (e.g., laser power, feed rate, and powder mass flow) and varying preheating temperatures. Based on metallographic analyses, the generated samples are evaluated. Major objective of these analyses are a defect free connection. Additionally, the forming microstructure and the occurring dilution zone are analyzed. In order to characterize the influence of different preheating strategies on the hardness and on the transformations temperatures of the generated parts, the results of hardness measurements and differential scanning calorimetry measurements are presented.
Sobre Mílada Bazant (coord.), Biografía. Métodos, metodologías y enfoques
Authors: Escobar Ohmstede Antonio
Published: May 2017

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El retorno de los jesuitas a México en el siglo XIX: algunas paradojas
Authors: Zermeño Guillermo
Published: May 2017

La historia del retorno de los jesuitas a México después de su expulsión en 1767 ya ha sido contada y documentada varias veces. En general tiende a dominar una lectura que enfatiza la continuidad entre la antigua y la nueva “Compañía”, una elaboración que toma forma básicamente durante el siglo xix. Sin embargo, en este ensayo se pone especial atención a la ruptura política y cultural suscitada a partir de los acontecimientos entre 1808-1821 para explicar las grandes dificultades que tendrán para obtener su nuevo reconocimiento. Así, se observa que los jesuitas retornados a Nueva España en 1816, al tiempo que se esforzaron en reactualizar su tradición y su ideario, tuvieron que enfrentar situaciones no previstas por sus fundadores y seguidores. En este sentido la provisionalidad permanente marcó su retorno durante el siglo XIX. Sólo hasta las reformas recientes de fines del siglo xx podrán disfrutar del reconocimiento oficial por los gobiernos mexicanos. En tal negativa, las luchas y conflictos del pasado antes de su expulsión en 1767, tendrán un gran peso.
Sobre David Eduardo Vázquez Salguero, Intereses públicos y privados en la configuración del territorio y la propiedad. Las Salinas del Peñón Blanco, 1778-1846
Authors: Luna Sánchez Patricia
Published: May 2017

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Sobre Marco Palacios (coord.), Negocios, empresarios y entornos políticos en México, 1827-1958
Authors: Márquez Graciela
Published: May 2017

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Saccharification of Lignocellulosic Materials by Cellulolytic and Xylanolytic Paenibacillus illioisensis CX11
Authors: Ahmed Abeer Ahmed Qaed , McKay Tracey
Published: May 2017

The utilization of lignocellulosic materials to produce a variety of building blocks (e.g. fermentable sugars) is an interesting alternative approach to meeting the growing demand for high value chemicals. Cellulose and hemicellulose can be hydrolyzed by cellulase and xylanase enzymes into their respective building blocks (hexoses and pentoses), which can later be converted into the targeted compounds. The aim of this study was to test the ability of Paenibacillus illinoisensis CX11 to saccharify different lignocellulosic materials, and to determine its ability to produce cellulolytic and xylanolytic enzymes for possible use in converting lignocellulosic materials into their respective fermentable sugars. The ability of P. illinoisensis CX11 to produce CMCase, xylanase, FPase, and avicelase was tested using SSF of corn stalk. Furthermore, the ability of P. illinoisensis CX11 to saccharify lignocellulosic materials was tested using corn stalk, wheat bran, sawdust, and corn cob. The amount of reducing sugars released from the saccharification of lignocellulosic materials was determined by the 3,5-dinitro-salicylic acid (DNS) method. Obtained results showed that P. illinoisensis CX11 can produce CMCase (400.12 Â± 1.23 U/L), xylanase (385.57 Â± 2.25 U/L), FPase (266.93 Â± 2.22 U/L), avicelase (187.85 Â± 2.22 U/L) and extracellular protein (4.56 Â± 0.14 mg/L). Moreover, P. illinoisensis CX11 showed an ability to saccharify lignocellulosic materials. These findings confirm that P. illinoisensis CX11 has the ability to produce cellulolytic and xylanolytic enzymes, and to hydrolyze different lignocellulosic materials into fermentable sugars. Therefore, this study concludes that P. illinoisensis CX11 can be considered a good source of cellulase and xylanase enzymes to saccharify different lignocellulosic materials.
The Development of Sustainable Community Food Barn in Wonogiri Regency, Central Java, Indonesia
Authors: Riptanti Erlyna Wida , Qonita Suprapti Aulia
Published: May 2017

Â Food storage in the form of barn is mostly ineffective in Wonogiri. Even though, it has very significant role as buffer stock in the drought season. Meanwhile, the governmentâ€™s program initiates the activating of food barn, by providing fund assistance for barn building, rice miller and restock rice grains in the barn. However, it has not made the barn well developed, due to its dependency on the program.The aim of this study is to construct the development of sustainable communityâ€™s food barn. This study was used an exploratory method. The location of this study was selected purposively in Wonogiri. The result of this study showed that inactive food barn was caused by its poor management. Meanwhile, the active food barn functioned for savings and loans of rice grains. It has high dependency to the government program. The barn development needs a support from physical and non-physical environment to reach its sustainability.
Effect of Hall Current on MHD Oscillatory Slip Flow with Varying Temperature and Concentration
Authors: Sumathi K. , Arunachalam T. , Radha N.
Published: May 2017

An investigation of the effect of Hall current on an unsteady MHD mixed convective oscillatory flow of an electrically conducting fluid through a planar channel filled with saturated porous medium is carried out in this paper. The effect of buoyancy, heat source, thermal radiation, chemical reaction and Hall current are taken into account with slip velocity, varying temperature and concentration at the lower boundary. A series solution is found using perturbation techniques. The effects of various parameters on the main and cross flow velocity, temperature, Skin friction, rate of heat and mass transfer are discussed numerically.Â
Hazop Study and Fault Tree Analysis for Calculation Safety Integrity Level on Reactor-C.5-01, Oil Refinery Unit at Balikpapan-Indonesia
Authors: Dacosta Silvana R. , I. Al-Asyâ€™ari I. , Musyafa Ali , Soeprijanto Adi
Published: May 2017

plat former reactors are reactors that are in the plat forming unit is designed for developing your specific hydrocarbon molecules that are used in catalytic engine fuel in boiling point range naphtha and fuel mixture to produce components with a higher octane value. Plat former reactor system failure may disrupt operations in the oil processing refinery unit. These circumstances will cause the supply plaformat as products of the plat forming unit valued high octane which is the main raw material of gasoline blending system is reduced. Resulting in decreased production consequency large losses. The failure of the reactor system can also be harmful to the operator, the environment and there is a possibility of reactor unit may explode. To avoid these risks we conducted studies identify hazards that occur in the process rector Hazard and operability (HAZOP) analysis and calculate the value of safety integrity level (SIL). In this study reviewed three nodes Overview consisting of node stage 1, stage 2 and stage 3. Based on the results of identification are thirteen instruments on the third node, which includes equipment; PC-193, FI-005, PC-194 and FI-010. Standards-based Service Oriented systems have Unacceptable risk criteria and the criteria of likelihood 4 Consequences worth three. As for the evaluation of SIL is known that C-5-01 reactor system has two safety Integrity Function (SIS) located in the path of fuel gas and pilot gas lines of the reactor heater. Both SIS has a vote = 1oo3 architecture with similar characteristics, and a review of the SIS has a security level SIL = 2 with a value of PFD = 0.00103.
Multi-criteria Approach for Prioritizing Bridge Maintenance in Developing Country (Case Study of Bali Province, Indonesia)
Authors: Suthanaya Putu Alit , Artamana Ida Bagus
Published: May 2017

Transport agencies in developing countries are often faced by the need to maintain a lot of road projects but have limited budget. One important road infrastructure complement is bridge. The bridge is a vital infrastructure facilities for the continuing development of social and economic activities of the region. A serious problem in developing countries such as Indonesia is limited funds available for maintenance. In Bali Province, the priority of bridge maintenance program is prepared based only on the technical condition of the bridge. However, many aspects actually need to be considered. As limited funds available, the objective of this study is to develop bridge maintenance prioritization criteria and rank the bridges to be maintained based on the Analytic Hierarchy Process (AHP) method by using Bali Province as a case study. It was found that the stakeholders for bridge maintenance in Bali Province gave priority to road network system 1.34 times more than movement system, 1.56 times more than land use system and 2.49 times more than institutional system. The road network system was identified as the main factor considered in maintaining bridge in Bali Province. From 86 bridges considered in this study, it was found that 19 bridges were in the very high priority category. It was also found that the ranking of bridge maintenance priority based on the AHP method was very similar to the realized program.Â
Strengthening Social Capital to Enhance Participation In Public Sector
Authors: Yunus Hasniati, Rabina , Sakaria Nurlinah,
Published: May 2017

At the end of the 20th century, there was a significant movement to increase public participation in policy formulation, implementation and evaluation in developing countries.Â  Participation keeps community life vital and public institutions to be accountable. Â When people feel that their participation in development has important value, the quality, effectiveness and efficiency of development will be increased. Therefore, the government should concern to promote Â public participation in the development program Â that can be enhance accountability This research was conducted in the coastal villages Takalar District South Sulawesi, Indonesia, using a case study approach with a qualitative descriptive analysis method.Â  This research was explore social capital can enhance coastal communities participation in public fund management.Â  By using in-depth interviews and focus group discussions, the study found that strategies that can be used by the government to increase community participation is to strengthening social capital in the community.
Leadership Style and Student Satisfaction:Mediation of Teacher Effectiveness
Authors: Adhikary Jyoti Regmi
Published: May 2017

Teacher leadership style, his/her teaching effectiveness, and student satisfaction are considered to be the key to enhancing effective teaching-learning experiences in educational setting. The purpose of this study was to examine the relationship between teacher leadership styles and student satisfaction, and investigate if teacher effectiveness mediated the relationship. One hundred thirteen graduate management students and 11 management teachers participated in the survey conducted in a business school in Kathmandu, Nepal. Results suggest that teacherâ€™s effectiveness is significantly predicted by teacherâ€™s transformational leadership style and is also a significant predictor of student satisfaction. Also, teacher effectiveness was found to partially mediate the relationship between teacherâ€™s transformational leadership and student satisfaction, with teacherâ€™s transformational style predicting student satisfaction. Limitations of the study are identified, important implications and future research issues are discussed.
Role of Integrated Sciences Teaching Materials on Pressure Topic to Improve Student’s Critical Thinking Skills in Junior
Authors: Fitriani Rahmania, Any , Kaniawati Ida
Published: May 2017

This study was aimed to identify student’s critical thinking skills through the use of integrated sciences teaching materials on pressure topic. This study was conducted at one of SMP in Cimahi, West Java, Indonesia for the 2015/2016 academic year. It used experimental method with nonequivalent pretest-posttest control group design. There were two classes involved, the experiment class where the students using the integrated sciences teaching materials, while the control class using conventional teaching materials provided at school. Data was respectively collected and analyzed by using student’s critical thinking skills test and data analysis tools SPSS version 21. The result shows that there is a significant difference in student’s critical thinking in student taught using integrated sciences teaching materials those taught with conventional teaching materials. It can be concluded that there is improvement in critical thinking skills of students in the experiment class compared to the control class. In addition, this study provided of positive impacts on student’s active learning and independent learning.
Acculturation in the Architecture of Lasem City
Authors: Purwanto L.M.F. , Titiek S. Yulita
Published: May 2017

Lasem city, located on the northern coast of Java, is particularly well-known for its buildings with Chinese architecture, thus the nickname â€œLittle Chinese (or China) in Javaâ€. Despite the deeply ingrained Chinese ethnicity in Lasem, history recorded the tight bond of solidarity between the Chinese and the Javanese. Religious, racial, and ethnic conflicts between the two ethnic groups hardly existed.Â Â Â Â Â Â Â Â Â Â Â  By using the phenomenological approach, this research focuses on the process of acculturation in Lasem. It specifically attempts to document the acculturation process manifested through building structures and settlement patterns as a model of the daily life of the Indonesian society.Â The findings of the study suggested that acculturation process has greatly influenced the structure of the buildings in Lasem. Many buildings in Lasem mix the Chinese and Javanese architectures in their space layout and details. The outcome of this research is a model of acculturation process reflected in architecture. This model can be implemented in other cities in Indonesia.Â
The Participants and Their Motivation of "Human Flesh Search": Comparing the Phenomena between Taiwan and China (Mainlandï¼‰
Authors: Du Sainan
Published: May 2017

Although having been emerging human flesh searchï¼ˆHFSï¼‰ in America,British,Japan, the Chinese regions are the places where HFS has been the most frequent,Especially in Taiwan and China. This study comparing differences between the two regions of the â€œ participantsâ€, â€œmotivationâ€ and â€œparticipationâ€, through an empirical way,online survey, Study results indicate that: (1) China HFS is higher than Taiwan in the participation degree;(2) Taiwan users status and motivation to participate in a correlation;(3)The relationship between the motivation and participation of participants in tworegions are difference.