bluuebunny/crossref_metadata_2025 huggingface dataset:
VeraFlo Negative Pressure Wound Therapy with Household Bleach for Refractory Driveline Infection in a Patient with Left Ventricular Assist Device.
Authors: Idris Amr , Hart Amanda , Branam Sarah , Guglin Maya
Published: October 2019

Driveline infections and sepsis are amongst the most common causes of morbidity and mortality in a patient with a left ventricular assist device. In this case, we present a patient with a multi drug resistant pseudomonas aeruginosa driveline exit site infection. Initially, it was treated with dual antibiotics, followed by surgical debridement utilizing Dakin’s solution irrigation and standard negative pressure wound therapy. Wound healing was minimal determined by poor granulation appearance, unchanged size from surgical debridement, purulent drainage, and the wound base remained colonized with multi drug resistant pseudomonas aeruginosa. A novel treatment of VeraFlo negative pressure wound therapy in conjunction with indwelling Dakin’s solution into the wound base was introduced. This treatment resulted in improved granulation appearance, decreased drainage, decreasing in wound size, with positive changes noticeable in 7 days. We suggest that the use of VeraFlo negative pressure wound therapy may be used for treatment for cumbersome driveline infections.
Old Dog, New Tricks – Usefulness of the ECG in Monitoring Acute Rejection Post Cardiac Transplantation
Authors: Anaya Paul , Elayi Samy-Claude
Published: October 2019

Electrocardiographic abnormalities have been described in the setting of acute rejection following orthotopic cardiac transplantation. The following is a brief commentary related to an interesting case report by Goldraich et al. which was recently published in the VAD Journal.
Surgical Considerations of LVAD Implantation in Patients with Prosthetic Valves
Authors: Gregoric Igor D.
Published: October 2019

The case report by Rajagopalan and Booth demonstrates successful long-term LVAD support of a patient with a mechanical mitral valve. The continuous flow from the left atrium to the left ventricle and into the inflow of the LVAD appears to provide sufficient washing of the Bjork-Shiley mechanical valve surfaces and avoid thrombosis. The higher level of anticoagulation used in this case may not have been needed, and in some patients this may have complicated gastrointestinal bleeding.
HeartMate II Post-marketing Clinical Studies to Further Establish and Expand LVAD Therapy
Authors: Kallel Faouzi
Published: October 2019

The number of patients with end-stage heart failure (HF) benefiting from mechanical circulatory support based therapy is rapidly growing. Over the last 2 decades the therapy has been rapidly evolving particularly since the introduction of continuous flow ventricular assist devices (CF-LVAD) which addressed several limitations of the first generation pulsatile devices. According to the sixth INTERMACS registry annual report, the 12 and 24 months overall actuarial survival of CF-LVAD was 80% and 70% respectively.1 Survival rates remained unchanged over the past 6 years. The adverse events associated with CF-LVAD have been dramatically reduced when compared to rates associated with the previous generation pulsatile flow devices. The burden of adverse events associated with CF-LVAD decreased over the last 6 years and quality of life improvement at 12 and 24 months remained consistent. According to the report, while the proportion of patients implanted while stable on inotropic support has significantly increased in the last era (2011-2013), the expansion into INTERMACS levels 4 and higher remains limited to 20%.
Development and Pilot-Testing of a Patient Decision Aid for Left Ventricular Assist Device Placement
Authors: Kostick Kristin , Delgado Estevan D. , Wilhelms Lidija A. , Bruce Courtenay R. , Estep Jerry D. , Loebe Matthias , Minard Charles , Blumenthal-Barby Jennifer S.
Published: October 2019

Background

Studies indicate suboptimal patient understanding of the capabilities, lifestyle implications, and risks of LVAD therapy. This paper describes the development methodology and pilot-testing of a decision aid for Left Ventricular Assist Device (LVAD) placement, combining traditional needs-assessment with a novel user- centered approach.

Methods and Results

We developed the decision aid in line with the Ottawa Decision Support Framework (ODSF) and the International Patient Decision Aids Standards (IPDAS) for ensuring quality, patient-centered content. Structured interviews were conducted with patients, caregivers, candidates for LVAD treatment, and expert clinicians (n=71) to generate content based on patient values and decisional needs, and providers’ perspectives on knowledge needs for informed consent. The aid was alpha tested through cognitive interviews (n=5) and acceptability tested with LVAD patients (n=10), candidates (n=10), and clinicians (n=13). Patients, caregivers and clinicians reported they would recommend the aid to patients considering treatment options for heart failure. Patients and caregivers agreed that the decision aid is a balanced tool presenting risks and benefits of LVAD treatment and generating discussion about aspects of heart failure treatment that matter most to patients.

Conclusion

We identified gaps in knowledge about heart failure treatment options, including diagnosis, decision-making, surgery, post-operative maintenance and lifestyle changes. Challenges included presenting risks and benefits for informed decision making without frightening patients and circumventing reflection, and balancing an emphasis on LVAD with other alternative treatment options like comfort- directed palliative and supportive care.
A Protocol for Collecting Human Cardiac Tissue for Research
Authors: Blair Cheavar A. , Haynes Premi , Campbell Stuart G. , Chung Charles , Mitov Mihail I. , Dennis Donna , Bonnell Mark R. , Hoopes Charles W. , Guglin Maya , Campbell Kenneth S.
Published: October 2019

This manuscript describes a protocol at the University of Kentucky that allows a translational research team to collect human myocardium that can be used for biological research. We have gained a great deal of practical experience since we started this protocol in 2008, and we hope that other groups might be able to learn from our endeavors. To date, we have procured ~4000 samples from ~230 patients. The tissue that we collect comes from organ donors and from patients who are receiving a heart transplant or a ventricular assist device because they have heart failure. We begin our manuscript by describing the importance of human samples in cardiac research. Subsequently, we describe the process for obtaining consent from patients, the cost of running the protocol, and some of the issues and practical difficulties that we have encountered. We conclude with some suggestions for other researchers who may be considering starting a similar protocol.
Tolerability of Intermittent Hemodialysis in a Cohort of Patients with Left Ventricular Assist Device
Authors: Areephanthu Christopher , El-Husseini Amr , George Bennet , McAbee Jessica , Sawaya B. Peter
Published: October 2019

Background

The use of left ventricular assist device (LVAD) has emerged as a popular treatment for patients with advanced heart failure. It is not uncommon for these patients to suffer from renal failure requiring renal replacement therapy. The purpose of this study is to assess hemodynamic parameters and ability to complete the prescribed hemodialysis session in a series of patients who underwent numerous dialysis treatments.

Methods

Nine patients with Heart Mate II LVAD received 170 intermittent inpatient hemodialysis treatments between January 1, 2010 and December 31, 2012. Assessment included vital signs, ultrafiltrate removed, hemodialysis duration, symptoms, early terminations (ET), and adverse events during each hemodialysis session.

Results

The mean age was 53 ± 18 with a range of 26-83 years, with a male predominance (7/9). Indication for LVAD was as destination therapy (DT) in the majority of patients (6/9). Nine patients who received a total of 170 hemodialysis sessions with a mean prescribed and achieved: ultrafiltration (liters) 1.98 ± 1.5 and 1.90 ± 1.6; hemodialysis duration (hours) 3.12 ± 0.3 and 2.86 ± 0.9, respectively. Early termination was experienced in 11 sessions (6.5%). Causes of ET were hypotension in 72.7%, other causes were equally distributed between clotted extra-corporeal circuits, nausea & vomiting and LVAD alarm (9.1% in each). Serious arrhythmias were not observed in any of the hemodialysis treatments. Six out of nine patients (66.7%) recovered kidney function and became dialysis independent.

Conclusion

In a hospital setting, patients with LVAD can often tolerate and complete the prescribed hemodialysis treatment.
What Did We Learn about VADs in 2015?
Authors: Guglin Maya
Published: October 2019

The field of mechanical circulatory support is rapidly evolving and new data are published at a rate that can be overwhelming. Last year, we published a review paper entitled “What Did We Learn about VADs in 2014?” That paper was well received – the full text was downloaded over 350 times by the readers around the globe. Encouraged by this, we wrote the present review, where, like before, we summarized some of the publications from 2015 that we think are particularly important.
Does Left Ventricular Assist Device Implantation Affect Driving Patterns in Patients With End-Stage Heart Failure?
Authors: Pinninti Mamatha , Sauld Christina , Thohan Vinay , Cheema Omar , Hastings T. Edward , Crouch John , Downey Frank , Sulemanjee Nasir Z.
Published: October 2019

Background

In 2012, the Canadian Society of Cardiology indicated that patients supported with left ventricular assist device (LVAD) may drive a private vehicle 2 months after implantation, provided they are deemed clinically stable. Objective evidence supporting this recommendation is limited. We sought to compare data regarding driving habits in our patients following LVAD implantation.

Methods

A standard questionnaire addressing driving patterns before and after LVAD implantation was sent to all living patients who had received an LVAD between January 2010 and January 2014. Ninety-four of 124 patients responded (average age 58 years, 69.2% men, 77.7% bridge to transplant).

Results

Prior to LVAD, all were living at home, 33% were employed, and 93% were driving. Sixty-nine percent indicated they drove after LVAD implantation; they were younger (56 vs 62 years, p=0.02) and had providers recommendation (p=0.004). Four of seven patients who had not driven before started driving (p

Conclusions

Most patients returned to driving after LVAD implantation. A minority had LVAD-associated alarms that were easily addressed. We suggest inclusion of driving habits in registries to provide clarity on the safety of driving while being supported with LVAD.
Approach to Unresponsive Patient with LVAD
Authors: Guglin Maya
Published: October 2019

Unresponsive patient with left ventricular assist device (LVAD) is always a challenge. While LVAD by itself is a relatively novel technology, mere presence of which often puzzles providers not dealing with it on a daily basis, unresponsiveness in such patient adds another level of complexity. Two papers recently published in the Journal (1, 2) describe the course of the events in several patients with LVAD who coded, only one of which was discharged from the hospital alive (1).
Limit Configurations of Schrödinger Systems Versus Optimal Partition for the Principal Eigenvalue of Elliptic Systems
Authors: Luo Haijun , Zhang Zhitao
Published: October 2019

We study a Schrödinger system of four equations with linear coupling functions and nonlinear couplings, including the case that the corresponding elliptic operators are indefinite. For any given nonlinear coupling

β
>
0

{\beta>0}

, we first use minimizing sequences on a normalized set to obtain a minimizer, which implies the existence of positive solutions for some linear coupling constants

μ
β

,

ν
β

{\mu_{\beta},\nu_{\beta}}

by Lagrange multiplier rules. Then, as

β
→
∞

{\beta\to\infty}

, we prove that the limit configurations to the competing system are segregated in two groups, develop a variant of Almgren’s monotonicity formula to reveal the Lipschitz continuity of the limit profiles and establish a kind of local Pohozaev identity to obtain the extremality conditions. Finally, we study the relation between the limit profiles and the optimal partition for principal eigenvalue of the elliptic system and obtain an optimal partition for principal eigenvalues of elliptic systems.
Analysis of Factors Affecting Parental Participation Towards Early Childhood Education Program
Authors: Kustiani Anik Tri , Fauziyah Puji Yanti
Published: October 2019

The lack number of teachers in Wonogiri district urgea participation between parents and organizer of Early Childhood Education (ECE) program. Related to this issue, this study aimed at (1) knowing the implementation of ECE program in Wonogiri district (2) analyzing the forms of parental participation in ECE program (3) analyzing the factors affecting parental participation in ECE program implementation. This study can be catagorized as descriptive research with a quantitative approach. The data analysis technique was using descriptive statistics among ECE program in Wonogiri District, Central Java. The reserach findings showed that (1) ECE program in Wonogiri District was operated under the Education Office of Wonogiri District, especially Non-Formal and Informal Education Unit. It has ECE section focusing on developing ECE services in Wonogiri district (2) most of the respondents had a low level of participation in terms of policies, collaboration, information (3) factors affecting parental participation in ECE program implementation were education, occupation, income as well as distance between home and school.
Saberes digitales en la educación primaria y secundaria de la República Argentina
Authors: Bordignon Fernando Raúl-Alfredo
Published: October 2019

En septiembre de 2018, en el marco del Consejo Federal de Educación de Argentina, se aprobaron los Núcleos de Aprendizaje Prioritario (NAP) de Educación Digital, Programación y Robótica. La resolución pertinente aborda cuestiones referentes al desarrollo de nuevos saberes digitales, indicando que comenzarán a ser temas de enseñanza obligatorios en todos los establecimientos del país, con lo cual involucra y lleva a repensar acciones educativas en distintas dimensiones (currículum, recursos didácticos, metodologías, capacitación y formación, entre las principales). Este documento tiene por objetivo presentar, desde la Universidad Pedagógica Nacional, una propuesta de organización de los Núcleos de Aprendizaje Prioritario en un marco de referencia denominado “Saberes Digitales”, en función de poder conceptualizar y pensar en posibles acciones de apoyo al sistema educativo de nivel primario y secundario en su relación con tales saberes.
La tensión entre educación para la renta y educación para la democracia en la universidad
Authors: López Calva Juan Martín , Méndez Escarza Claudia Rebeca
Published: October 2019

La filósofa estadounidense Martha Nussbaum en su libro Sin fines de lucro (2010) plantea el riesgo que está viviendo el mundo al orientar sus sistemas educativos hacia el único objetivo de incrementar su producto interno bruto (PIB). A este tipo de orientación le llama Educación para la renta. Esta educación se enfoca exclusivamente a la capacitación técnica y profesional para la eficiencia en el mercado laboral y excluye a las artes y las humanidades de sus planes de estudio, con el consecuente riesgo de formar máquinas útiles para el sistema, pero no a los ciudadanos que requieren las sociedades democráticas. Como alternativa a la educación para la renta, Nussbaum plantea la necesidad de una educación para la democracia, que forme personas sensibles, capaces de comprender al otro y de valorar su propia cultura como parte de un tejido intercultural global. Este artículo presenta los resultados de una investigación realizada entre estudiantes de posgrado de una universidad particular del centro de México a partir de un cuestionario creado con base en las características de la educación para la renta y la educación para la democracia planteados por Nussbaum. Se recoge la percepción de los sujetos acerca del ser y el deber ser de la formación universitaria en sus disciplinas. En general se aprecia una visión que valora los elementos de la educación para la democracia, aunque se perciben algunos rasgos, sobre todo en el deber ser, que responden a la visión de la educación para la renta.
Fomento de oralidad y escritura en la cátedra “Cine, Economía y Sociedad”
Authors: Díaz Boada Sandro Alberto
Published: October 2019

El presente texto revela aspectos fundamentales de un proyecto didáctico - pedagógico aplicado en el período académico 2017-1, denominado “Fomento de oralidad y escritura a través de los géneros mesa redonda, exposición y crítica de cine en la cátedra ‘Cine, Economía y Sociedad’”, elaborado con la participación de estudiantes de distintos programas académicos de la Universidad Industrial de Santander - UIS, Sede Bucaramanga. Al tener los dispositivos audiovisuales a disposición en el aula, y potenciando especialmente las expresiones cinematográficas de distintos formatos y géneros, el proyecto requirió de una reflexión intensa sobre la pedagogía de la imagen (y lo sonoro) que se bosqueja brevemente aquí. Asimismo, expone los distintos, pero complementarios métodos de evaluación implementados que requirieron de un alto grado de participación del estudiantado y obtuvieron resultados ampliamente satisfactorios. Al integrar elementos tan distintos y complejos como el cine, la economía y aspectos propios de la sociología y las ciencias sociales, la asignatura ha querido plantearse–estimulado por el cursado del Diplomado en Procesos Didácticos de Lectura, Escritura y Oralidad en Educación Superior (V Cohorte), por parte del docente encargado–una relectura de la cátedra para incrementar, fomentar y potenciar los procesos de oralidad y escritura en el ámbito de la educación superior.
Portafolio de actividades como estrategia para fortalecer hábitos de lectura y escritura en estudiantes de Cuarto y Quinto grado de primaria
Authors: Granados Aranzalez Luz Enith
Published: October 2019

Este artículo tiene como objetivo plantear aspectos de la investigación sobre el fortalecimiento de hábitos de lectura y escritura en los estudiantes de los grados Cuarto y Quinto de Escuela Nueva del Instituto Técnico Buena Esperanza sede El Limoncito, mediante la implementación de la estrategia portafolio de actividades. El desarrollo del proyecto gira en torno a las categorías de proceso educativo con fundamento en Díaz (2001), hábitos de lectura y escritura con los aportes de Solé (1992) y Cassany (1995), portafolio de actividades descrito por Argudín (2007) y Escuela Nueva de acuerdo con las ideas de Dewey (1995). El diseño metodológico consistió en un estudio de investigación-acción con enfoque cualitativo, desarrollado según el proceso descrito por Pérez y Nieto (1993) de cinco etapas bajo una lógica circular de revisión y reflexión permanente, los instrumentos aplicados para la recolección de información fueron el diario de campo y el Test TALE, entretanto para el análisis se aplica la técnica de triangulación. Los resultados obtenidos reflejan un avance significativo en los niveles de lectura y escritura de los estudiantes quienes se muestran más seguros al leer en voz alta, organizan mejor las ideas para conformar la estructura de los textos y disfrutan de las tareas asignadas para realizar en casa. El producto de la investigación es el portafolio de actividades, una propuesta que ha permitido a los educandos explorar a partir de la lúdica, la didáctica y la creatividad sus habilidades de interpretación y composición en lengua castellana.
Professional risks of modern students as a component of a risk society: risks peculiarities of the professional existence phases
Authors: Deineko Oleksandra
Published: October 2019

The article investigates the “occupational risks” of contemporary Ukrainian students. Based on the definition of “risk” given by J. Zubok, the author offers her own definition of “occupational risks” and develops typologies of their classification. Special attention is given to the risks analysis of subject’s professional existence phases and to the study of occupational risks’ peculiarities.
Cultural codes of commercial advertising: experience of typology construction
Authors: Klimenkova Anastasiia
Published: October 2019

The article investigates the peculiarities of cultural codes perception by the recipients of advertising messages transmitted through commercial advertising. The results of the implemented analysis allowed revealing main cultural codes, which regulate consumer behavior and are represented in collective consciousness of Ukrainian society: “beauty and sexuality”, ”family happiness and moral feelings”, “wealth and luxurious life”, “healthy life-style”, “comfort”.
System of social-historical memory and mnemologic society culture
Authors: Pozdnyakova-Kirbatyeva Ellina
Published: October 2019

The article discusses the theoretical issues of the system and culture of the socio-historical memory, which are considered as its shape and quality. Author analyzes the components of the system of socio-historical memory, such as content, objects and subjects of the social-historical memory, institutional compositions for the preservation of the socio-historical memory, social relations relating to the socio-historical memory.
Qualitative parameters of the socio-historical memory are determined: mnemologic culture, status, nature of mnemologic attitudes and values. Operationalization of the mnemologic culture and the state of socio-historical memory is suggested.
Social advertising as a negative phenomena prevention tool in Ukrainian society: regional aspect
Authors: Agarkov Oleh
Published: October 2019

The article presents theoretical analysis of the “social advertising” notion and the main characteristics of social advertising.
The results of a survey concerning the theme of the article are suggested. Empirically highlighted actual social problems that are to be covered in social advertising as a prevention tool of negative social phenomena in Ukrainian society are described.
Soccer Injuries in Children and Adolescents
Authors: Watson Andrew , Mjaanes Jeffrey M. ,   COUNCIL ON SPORTS MEDICINE AND FITNESS, LaBella Cynthia R. , Brooks M. Alison , Canty Greg , Diamond Alex B. , Hennrikus William , Logan Kelsey , Moffatt Kody , Nemeth Blaise A. , Pengel K. Brooke , Peterson Andrew R. , Stricker Paul R.
Published: October 2019

This Clinical Report was reaffirmed July 11, 2023.

Participation in youth soccer in the United States continues to increase steadily, with a greater percentage of preadolescent participants than perhaps any other youth sport. Despite the wide-ranging health benefits of participation in organized sports, injuries occur and represent a threat to the health and performance of young athletes. Youth soccer has a greater reported injury rate than many other contact sports, and recent studies suggest that injury rates are increasing. Large increases in the incidence of concussions in youth soccer have been reported, and anterior cruciate ligament injuries remain a significant problem in this sport, particularly among female athletes. Considerable new research has identified a number of modifiable risk factors for lower-extremity injuries and concussion, and several prevention programs have been identified to reduce the risk of injury. Rule enforcement and fair play also serve an important role in reducing the risk of injury among youth soccer participants. This report provides an updated review of the relevant literature as well as recommendations to promote the safe participation of children and adolescents in soccer.
Ki mit tud? – A betegátadásról. Egy magyar és lengyel mintán végzett tudásfelmérés tapasztalatai
Authors: Lám Judit , Safadi Heléna , Pitás Eszter , Belicza Éva
Published: October 2019

Abstract:

Introduction: The most common reason for the adverse events in healthcare is communication. Due to the development of health technologies and the increasing specialization of care, more and more healthcare professionals are involved in the treatment of patients, resulting in an increasingly important role and risk for patient handover. Aim: To present the current state of knowledge of patient handover through the results of an international project. Method: Self-developed, anonymous questionnaires with single and multiple choice questions were used to investigate handover knowledge among healthcare workers in 3 Hungarian and 3 Polish hospitals. The frequency of responses was analyzed according to their correctness. The factors that can influence the knowledge were studied using a regression model in the Hungarian sample. Results: The questionnaire was completed by 63% of the 2963 employees who received the questionnaires. In the two countries, there was no significant difference in the proportion of correct responses. Nearly half of the responders (49.4%–45.7%) gave the right answers to the question about the definition of patient handover. The lowest rate of correct answers (14.4%–11.1%) was given to elements of patient handover techniques. The difficulty of the questions also showed a similar pattern. Conclusion: Based on the results, it can be concluded that knowledge of handover needs to be improved in both countries. Although healthcare providers have some knowledge about handover, it cannot be considered accurate and complete. It is important to promote the knowledge and practice of handover together for the safety of patients and healthcare providers. Orv Hetil. 2019; 160(44): 1735–1743.
EVALUATION OF EFFECT OF BLEND OF LIMESTONE AND GYPSUM ON THE COMPRESSIVE STRENGTH OF PORTLAND BLENDED CEMENT
Authors: Ta Ngoc Dung , Hoang Canh Nguyen , Pham Thanh Mai
Published: October 2019

The substitution of 5% cement clinker by 5% gypsum or 5% limestone additive as well as the fineness of limestone was studied about its effects on the strength of cement. The study show that the gypsum additive of 5% increase the strength of cement at the time of 1, 3, 7, 28 days (R= 55.1 MPa of cement with 5% substituted additive comparable to R= 45.3 MPa of cement with 100% clinker at the time of 28 days). The limestone additive of 5% increase the strength of cement at the early time of 1, 3, 7 days (R= 46.0 MPa of cement with 5% limestone additive comparable to R= 31.6 MPa of cement with 100% clinker at the time of 7 days). As well as, the strength of cement increase when the fineness of limestone increase.
The Microstructural Revolution of Ti-6Al-4V Specimens Fabricated by Selective Laser Sintering of Pre-alloyed Powders
Authors: Nguyen Thuyet Minh , Nguyen Viet Hoang , Kim Jin-Chun
Published: October 2019

Selective laser sintering (SLS) is known as a cutting-edge technique to manufacture complex geometry products. Among various kinds of materials, Ti-6Al-4V is one of the most popular materials for the SLS process. The as-built Ti-6Al-4V products were widely applied in many applications such as aerospace, automobile, and especially in medical and implant parts. The purpose of this research is to investigate the microstructure and other properties of Ti6Al4V pre-alloyed powders produced by selective laser sintering technique. Through this research, the direct fabrication of Ti6Al4V metal object by SLS machine has been carried out using MetalSys250 machine. Different parameters of the SLS process were used to produce 1cm x1cmx1cm cubic samples and then microstructure, as well as mechanical properties of the as-built samples were investigated. Powder particles are fully dense, possess a spherical shape and are composed of acicular α phase. The as-build sample shows the oriented acicular martensitic phase with the defined columnar grain structures.
PREPARATION OF NICKEL NANOWIRES AND EFFECTS OF SYNTHESIS CONDITIONS ON THEIR MORPHOLOGY
Authors: Nguyen Minh Truong Xuan , Bui Thu Thi Minh , Le Cuc Thi , Nguyen Linh Huu , Pham Y Ngoc , Huynh Ha Ky Phuong , Nguyen Son Truong
Published: October 2019

Nickel nanostructures prepared by various methods have received considerable attentions due to their numerous applications. In this study, one-dimensional nickel nanowires (NiNWs) were synthesized by the reduction of nickel (II) chloride in polyol medium. Poly (vinylpyrrolidone) (PVP) served as the surfactant and hydrazine hydrate was used as the reductant. The effects of different experimental parameters, i.e. concentration of Ni2+, volume of N2H4, concentration of PVP and reaction temperature on the formation and morphology of NiNWs were studied. The structure, composition and surface morphology of the materials were characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM). The results showed that the morphology as well as the diameter of NiNWs could be effectively controlled by adjusting parameters of the synthesis process.
SYNTHESIS OF SULFUR-CONTAINED MICROCAPSULES AND POTENTIAL APPLICATION IN RUBBER
Authors: Ha La Thi Thai , Mai Chau Ngoc
Published: October 2019

Microcapsule-based material is potentially utilized in a variety of fields such as pharmaceuticals, food, biology, self-healing materials, etc. More remarkedly, in the rubber-related fields, this outstanding material is able to have a crucial role to play as an alternative of sulfur in compounding and vulcanizing process with regard to the self-healing ability after cracking. In this research, the interface polymerization was applied to generate microcapsules, whose shell was synthesized from Urea-formaldehyde pre-polymer modified by 0.25 wt% melamine containing sulfur (S) as a core substance. When the synthesizing process was carried out at 80 C and stirring rate of 300 rpm in 2 hours, the microcapsule product was spherical with the average size of 115 m and contained 60% of core content that was examined by FTIR, DLS, SEM, TGA and experimented the potential application. As a result, the amount of 8 phr of produced microcapsules utilized in NBR rubber compounds necessitated a longer time to vulcanize rubber at 160 C  compared to using 5 phr free S. Besides, the mechanical strength of the microcapsules-contained product was insignificantly changed but bloom-like phenomenon on the rubber surface was markedly improved. It is noticeable that the vulcanized NBR rubber with the presence of these microcapsules are well able to heal its crack or cut when heated up to 150 C in 10 minutes while the free S-vulcanized NBR rubber is definitely unable to be self-healing in the same conditions.
CHARACTERISTICS OF SILICA COATING ON COPPER SUBSTRATE USING COCONUT OIL AS A DISPERSION MEDIUM
Authors: Kien Pham Trung , Long Le Ngoc , Trung Kien Kieu Do , Quan Nguyen Dinh , Minh Do Quang
Published: October 2019

The object of this study is to develop an easy and simple technique to fabricate the coating solution of Vietnam rice hush ash-derived water glass (VRHA-WG) and Vietnam coconut oil (VCO). The coating solution with different mixing ratio of VRHA-WG and VCO such as 1: 5 and 1:10 (v/v) can be coated on copper substrate. After coating, the substrate are heated at 500oC for 2 hours to enhance the adherence of silica layer and substrate. The characterization of the coating layer are studied by Xray Diffaraction (XRD) and Xray Fluorescence (XRF) while the surface morphology of the substrate before and after coating is study be scanning electron microscope (SEM). Electricity resistant of the substrate after coating increase up to 33.33% compare without coating.
EFFECT OF TEMPERATURE ON THE STRUCTURE AND PROPERTIES OF Fe2O3/GRAPHENE NANOCOMPOSITES SYNTHESIZED BY HYDROTHERMAL METHOD
Authors: Tran Van Khai , Nguyen Quang Vinh , Le Van Thang , Mai Thanh Phong
Published: October 2019

A simple and straightforward approach was used to prepare Fe2O3/graphene nanocomposites with different temperature conditions. The nanocomposites were characterized by X-ray diffraction (XRD), Raman spectroscopy, field emission scanning microscopy (FE-SEM), transmission electron microscopy (TEM), energy dispersive spectroscopy (EDS) and photoluminescence (PL). The results show that Fe2O3 nanoparticles with size in range of 60-100 nm are anchored on the surface and filled between the graphene nanosheets at hydrothermal reaction. The PL spectrum exhibits the emission peaks appeared at ~ 650 nm and ~ 720 nm.
ANTI-ODOUR TREATMENT ON 100% WOOL FABRIC USING COLORANTS FROM COFFEE GROUND RESIDUES
Authors: Huong Bui Mai , Huong Thinh Le Thi
Published: October 2019

Coffee ground residues is considered as biomass and organic wastes that can be used for further application due to their deodorant properties. The purpose of this study is applying anti-odor treatment on 100% wool fabric by bi-functional dyeing process with colorant extracted from coffee ground residues. The extraction was done with water at 100ºC with different extracting ratio. The knitted wool fabrics were IR dyed with extracting solutions at 80ºC, 90 min, then dried at 60ºC, 30 min. The effectiveness of treatment on wool fabric was determined by colour strength K/S and FT-IR spectra. The colour fastness after hand wash were tested by AATCC standard to confirm the treatment after laundering, exhibited good color fastness at grade 4-5. The anti-odor effect was also evaluated according to AATCC 2017 Methods for Odor Evaluation of Textiles and other Materials for fabric before and after laundering, which proved the efficiency of deodorization of treated fabric by coffee residues extraction, even with strong odor like onion
Diseño de sistema de control automatizado para horno de tratamientos térmicos de Aceros Cúcuta–Colombia.
Authors: Ascanio Ingrid Marcela , Ariza-Quiñonez Sergio Antonio
Published: October 2019

Objetivo. Diseñar el sistema de control automatizado de temperatura del horno con el fin de garantizar los parámetros estándarnecesarios en los procesos de temple y revenido de una empresa del municipio de Cúcuta. Metodología investigación aplicada; proyectiva, deenfoque mixto, se recolecto información por medio de análisis documental, interpretó los datos destacando aspectos relevantes orientados aldiseño del sistema de control automatizado. Conclusión. Se logró el desarrollo de aplicaciones java con capacidad de comunicar el software endispositivos electrónicos basados en microcontroladores, para monitorear y controlar procesos de temple y revenido aplicados al sector de la siderurgia.
Relaciones interpersonales y emocionalidad en adolescentes embarazadas
Authors: Cadrazco-Urquijo John Anderson , Chacón-Rodríguez Lizeth Karina , Silva-Delgado Mayra Katherine
Published: October 2019

En el presente artículo se plasma el trabajo de investigación realizado con adolescentes embarazadas del barrio Simón Bolívarde la ciudad de Cúcuta, en edades de 12 a 21 años de edad, la investigación se realizó con el objetivo de analizar los efectos de las relacionesinterpersonales en la emocionalidad de las adolescentes embarazadas. Este estudio se realizó con metodologías cualitativa, recolección de datoscon técnicas entrevista, grupo focal y análisis documental, los instrumentos respectivos fueron validados por juicio de expertos, y las menoresasistieron, al igual que los padres de las menores autorizaron por medio de consentimiento la participación en la investigación en calidad deinformante. Los resultados develan variaciones comportamentales en el sistema o subsistemas de la adolescente especificados en familia, parejasy amigos, además de la identificación de perspectiva y proyección a futuro.
Teorías del aprendizaje y la construcción de conocimiento como estrategia de desarrollo organizacional.
Authors: Silva-Monsalve Gloria
Published: October 2019

El presente artículo realiza una disertación sobre las teorías del aprendizaje en la construcción del conocimientocomo una estrategia de desarrollo organizacional, la cual hará uso de la recopilación de información en la psicología educativa yorganizacional a fin de divulgar una visión innovadora de aplicar el componente educativo a un contexto organizacional.
Screening ground risk in underground works as part of a predictive modelling approach
Authors: Eddies Rod , Wood Ray , Haynes Asher , Warburton David , Pressdee Chris
Published: October 2019

Tunnels and underground spaces are expensive to build, and the ground continues to present a key source of construction risk. This paper outlines the tangible benefits of an iterative and predictive ground-modelling approach to manage subsurface risk for key subsurface project stakeholders, namely owners, designers and constructors. Using a recent case study from the UK mining sector, it highlights how a well-designed and well-executed pre-construction geophysical screening process can play a vital, early role in reducing uncertainty in the ground, thereby improving the management of underground construction risk.
A review of sustainability in civil engineering: why much more commitment is needed
Authors: Fenner Richard , Ainger Charles
Published: October 2019

This paper reviews the civil engineering profession’s progress towards sustainability over the past dec-ade in eight key areas. It finds there have been significant steps forward in assessment methods, sys-tems thinking, multi-functional infrastructure, flexible and adaptive design, and adoption of a circular economy in construction. However, it also finds the sustainability challenge is accelerating and much more needs to be done to go beyond business as usual. In particular, civil engineers need to be more vocal in calling out projects and practices that go counter to the planet’s and society’s needs.
Features of determining the parameters of the porous structure of ceramic materials
Authors: Kryuchkov Yu. N.
Published: October 2019

The methods for determining the pore volume distribution by the size of porous materials are analyzed and it is shown that the most rigorous are methods in which capillary effects do not appear. It is shown that mercury porosimetry and the method of liquid displacement by gas have a large error in the region of large pores. This is due to the percolation effect. It is proved that determining the distribution of pore volume from measurements of air flow gives too distorted results, so its use is not advisable.
Global perspectives of aluminaspinel lining concepts in a steel ladle
Authors: Klaus S. , Buhr A. , Dutton J.
Published: October 2019

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Taphole developments for specific steel industry demands
Authors: Birgit B. , Sarah K. , Bernd N. , Roland P.
Published: October 2019

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Obtaining highly active magnesia: modeling and experiment
Authors: Turchin M. Yu. , Masalimov A. V. , Smirnov A. N. , Grishin I. A.
Published: October 2019

The results of the analysis of the thermodynamic equilibrium conditions of the carbon dioxide leaching process are presented. The mathematical model for determining the properties for the most complete extraction of magnesium oxide present in raw materials was developed on their basis. Data from laboratory studies of magnesite samples from the Satkinskoe deposit of the Chelyabinsk region confirmed the adequacy of the simulation results.
Preparation and properties of melted zircon
Authors: Sokolov V. A. , Gasparyan M. D. , Bogatyreva E. V.
Published: October 2019

The data on the melting of zircon with the addition of glassforming oxides are given. The structure of the synthesized materials is represented by baddeleite and glass phase, which determine the operational characteristics of the refractory. Corrosion tests of samples of melted zircon in molten aluminum alloys showed their zero wettability and minimal corrosion. The material with an less than 2 % SiO2 was obtained when melted zircon was treated with a solution of 10 % HF. The threefold decrease in the silica content in the melting product was observed in electric arc furnace with carbothermic melting of zircon.
İhtiyaç –Etkinlik- Mekan İlişkisinin Kent Parkları Örneğinde İrdelenmesi
Authors: SARI Derya
Published: October 2019

Daha çok kent
merkezlerinde yer alan ve kent halkını doğa ile buluşturan park alanlarının
üstlendikleri birçok işlevler bulunmaktadır. Bu işlevlerin sağlıklı bir şekilde
sürdürülebilmesi ve park kullanıcılarının memnuniyetinin sağlanması tasarlanan
mekanlarda, ihtiyaç-etkinlik-mekan ilişkisinin iyi kurulmasına bağlıdır.
Kullanıcı ihtiyaçları doğrultusunda belirlenen etkinliklerin
gerçekleştirilebilmesi için de tasarlanan mekanların bu etkinliklere uygun
olması gereklidir. Bu çalışmada Doğu Karadeniz’de yer alan Artvin, Rize ve
Trabzon illerinin sahil kesiminde konumlanmış kent parklarından birer örnek
seçilerek bu alanlardaki İhtiyaç-Etkinlik-Mekan ilişkisi incelenmiştir. Buna
göre çalışma kapsamında fiziksel, fonksiyonel, estetik ve ekolojik olmak üzere
4 ana kriter ve bunlara ilişkin alt kriterleri içeren bir değerlendirme skalası
geliştirilmiştir. Her bir park alanına ilişkin genel değerlendirmeler bu
skalaya göre yapılmıştır. Araştırma sonuçlarına göre, kent parklarının
insanların genel ihtiyaçlarını karşılayabildiği mekanlara sahip oldukları
belirlenmiştir. Ancak fonksiyonel, estetik ve ekolojik kriterler bakımdan
birtakım eksikliklerin olduğu ve buna ilişkin daha uygun ve sürdürülebilir
mekanların tasarlanması gerektiği ortaya çıkmıştır.
Food Citizenship and Governmentality: Neo-Communitarian Food Governance in The Hague
Authors: Jhagroe Shivant
Published: October 2019

This article presents an account of food citizenship based on a governmentality framework. Moving beyond the dichotomy of democratic or neoliberal accounts of food citizenship, a food governmentality framework is presented. This Foucaultian inspired framework conceptualises food citizenship as identity formation in relation to various modes of power that govern food systems and subjects in significantly different ways. The article empirically illustrates how food citizenship relates to food governmentality by focussing on the food-related activities of a Transition Town initiative in the Netherlands (The Hague) called Den Haag In Transitie (DHIT). By defining food as a community issue, and employing holistic-spiritual and collaborative knowledge, food citizens in the DHIT case render sustainable food systems governable in radically new ways. I argue that this type of citizenship can be considered neo-communitarian food citizenship and moves beyond democratic or neoliberal accounts. Finally, the article reflects on neo-communitarian citizenship and argues for a nuanced understanding of food citizenship, moving away from either democratic romanticism or neoliberal criticism.
Association of Salivary Lipids and Early Childhood Caries in an Indian Subpopulation: A Preliminary Study
Authors: Sharma Akhilesh , Sindhuja Mudunuri , Subramaniam Priya
Published: October 2019

Aim: This preliminary study aimed to estimate and correlate the relationship between salivary flow rate and levels of salivary triglycerides, cholesterol and total lipids in children with and without early childhood caries. Study design: Ninety children aged 3 – 6 years were divided into three groups of 30 each based on their decayed missing filled tooth (dmft) score, group I (dmft score = 0), group II (dmft score ≥4 and ≤ 9) and group III (dmft scores ≥ 10). Whole unstimulated saliva was collected in a sterile graduated cup over a period of 5 minutes and was quantitatively analyzed for levels of salivary triglycerides, cholesterol and total lipids. Data obtained was subjected to statistical analysis by one way ANOVA, Post-Hoc tukey and Pearson’s correlation test. Results: Salivary flow rate was 1.20±0.36, 1.01±0.37 and 0.86±0.31 ml/min in group I, II and III respectively. The mean levels of salivary triglycerides in group I, II and III was 3.57±0.43mg/ml, 6.11±1.70mg/ml and 6.03±1.73 mg/ml, respectively. The mean levels of salivary total lipids were higher in group II and III, ie 22.51±2.87 mg/ml and 22.68±2.54 mg/ml respectively. The mean level of salivary cholesterol was highest in group III (8.03±2.91 mg/ml). Salivary triglycerides and total lipids showed a significant positive correlation with dmft scores of children (p≤ 0.001). Salivary cholesterol also had a positive association with dental caries experience of children but was not significant. There was a negative correlation between salivary flow rate and levels of salivary triglycerides, cholesterol and total lipids. Conclusion: Children with ECC (group II and III) had lower salivary flow rate and higher levels of salivary triglycerides and total lipids compared to caries free children (group I). Levels of salivary cholesterol did not differ between caries free and children with ECC.
Intraoral Soft Tissue Fibrosarcoma in a Four-Year-Old Child: An Unusual Case Report
Authors: Singh Arpanna , Singh Hariom , Kumar Dipanshu , Singh Aparna , Biswal Biranchi Narayan
Published: October 2019

Fibrosarcoma is a rare soft tissue tumor of connective tissue origin that includes about 0.05% of all the malignancies in the head and neck region of which almost 23% is seen in the oral cavity. This paper describes a rare case of 4-year-old boy who presented with swelling on the right side of face diagnosed as soft tissue fibrosarcoma of the intraoral region. The histopathological and immunohistochemistry confirmed the diagnosis by the presence of spindle-shaped cells arranged in fascicles with mitotic figures and cellular proliferation reproducing fibroblasts. The patient was successfully treated with combination of chemotherapy and surgery with a good clinical outcome. This case report is presented to highlight the rarity of fibrosarcoma in orofacial region of children which requires special attention of pediatric dentist and should be considered as differential diagnose of soft tissue mass in orofacial region of children. Clinical and histopathological features must be correlated with immunohistochemistry in the final diagnosis in fibrosarcoma.
El efecto de la autocongruencia en un sello de denominación de origen: el sello hecho en Puerto Rico
Authors: Flecha José A , Santos-Corrada María De los M. , Mena-Candelaria Sandra
Published: October 2019

Esta investigación cuantitativa analiza la teoría del autoconcepto y la identidad social y su impacto en las percepciones del comportamiento del consumidor de Puerto Rico y un sello de denominación de origen. Con 294 participantes de una encuesta y analizados a través de ecuaciones estructurales, se presentan resultados de cómo el autoconcepto y la identidad social generan el efecto de autocongruencia, lo cual tiene un impacto en la percepción de marcas nacionales y el sello de denominación de origen. Esta investigación genera una gran aportación a la brecha de estudios sobre los sellos de denominación de origen y presenta nueva evidencia sobre el comportamiento del consumidor a través del estudio del autoconcepto.
Teoría de modelos mentales y el constructo experiencia de marca: un estudio de caso en una escuela de negocios chilena
Authors: Cárdenas-Figueroa. Arturo
Published: October 2019

Se busca aplicar, por primera vez, la teoría de modelos mentales semánticos al servicio educativo de una escuela de negocios chilena. Un estudio cualitativo (focus group, análisis narrativo) permite diseñar una encuesta aplicada a 200 alumnos de pregrado, para describir su experiencia de servicio y su disposición a recomendar la marca. El resultado es un constructo del que se infiere un modelo mental de diversidad y excelencia, relacionado positivamente con la disposición a recomendar la marca. El constructo varía según la edad. Se exploran relaciones entre modelo mental y experiencia de marca. Se sugiere que, para aumentar las recomendaciones, el esfuerzo gerencial en las escuelas de negocios podría apuntar a lograr experiencias de consumos coherentes y no solo agradables.
Reprising ASL at ACT
Authors: Shurgot Michael W.
Published: October 2019

A review of Romeo & Juliet at Seattle's A Contemporary Theatre featuring deaf actors in the roles of Friar Lawrence and Romeo.