bluuebunny/crossref_metadata_2025 huggingface dataset:
La Corte Internacional de Justicia en el asunto Jadhav (India v. Pakistan) y un acople normativo demorado: derecho a ser informado a la asistencia consular y los derechos humanos
Authors: Díaz Galán Elena C. , Bertot Triana Harold
Published: October 2020

El presente artículo analiza críticamente la jurisprudencia de la Corte Internacional de Justicia en relación con la interpretación y aplicación del artículo 36 de la Convención de Viena sobre Relaciones Consulares. Esta vez al hilo del reciente fallo en el caso Jadhav (India v. Pakistan), en el cual la Corte mantiene una línea jurisprudencialque se analiza en sus limitaciones en relación con los derechos humanos y que tiene antecedentes. Se pretende demostrar, mediante el análisis normativo y jurisprudencial como método esencial del trabajo, que todavía no se han producido avances decisivos en el reconocimiento del derecho a ser informado a la asistencia consultar como un derecho humano que disponga de autonomía en el plano jurídico. La Corte Internacional de Justicia no extrae todas las consecuencias en el campo de los derechos humanos en esta temática. Este trabajo tendría el valor de apuntar las líneas que debería seguir la jurisprudencia de la Corte para acoger la tendencia a ocuparse de los asuntos sobre derechos humanos.
Las investigaciones en torno a la Real Universidad de México. Una síntesis historiográfica
Authors: Alcántara-Bojorge Dante-Alberto
Published: October 2020

La historiografía dedicada a la Real Universidad de México ha pasado por distintas etapas desde el siglo XX, y goza de diferentes puntos de vista sobre variados aspectos de sus actividades corporativas y académicas. El artículo se encarga de proporcionar una panorámica general acerca de las principales interrogantes y problemas planteados hasta ahora, tomando como eje la historiografía impulsada por investigadores de la Universidad Nacional Autónoma de México, y plantea algunas temáticas que todavía están por explorarse.
COVID-19 en México: repercusiones y retos del factor humano, financiero y fiscal
Authors: Guardado López Sinuhé Carlos , Martínez Flores Jerónimo , Tapia Torres Diana Esperanza
Published: October 2020

La pandemia del COVID-19 ha generado cambios no solo en las políticas de salud a nivel global, sino que también ha puesto a prueba a los gobiernos de diferentes países, a sus políticas económicas, monetarias y fiscales, a las empresas y sus finanzas, así como a sus trabajadores, quienes han sufrido un proceso de adaptación para transitar a lo que se ha denominado la nueva normalidad. Por lo anterior, el presente escrito enfatiza en el impacto que la pandemia del COVID-19 ha tenido en México y sus efectos colaterales en tres rubros medulares para el país y sus organizaciones, como son: el factor humano de las empresas, las finanzas empresariales y el área fiscal. Asimismo, se brinda una crítica a las medidas propuestas e implementadas por el Gobierno de México para enfrentar las primeras secuelas de la pandemia en los tres rubros medulares citados. Finalmente, se concluye el manuscrito con una perspectiva hacia el año 2021 de las áreas de comportamiento humano y organizacional (factor humano), financiera-empresarial y fiscal.
Modelo de minimización de los costos totales de la cuarentena y la pandemia: aplicaciones y estimaciones para el caso de República Dominicana
Authors: Reyesa Rolando
Published: October 2020

La cuarentena produce el beneficio del valor estadístico de los años de vida salvados y genera un costo igual a los ingresos dejados de producir por la población en confinamiento, lo cual queda representado en el modelo aquí formulado. Se incorporan las tasas de contagio y mortalidad, con y sin cuarentena, siendo del beneficio de esta la diferencia entre ambos estados. Se asume como único costo el ingreso laboral de la población en confinamiento, el que, multiplicado por su cantidad, produce como resultado el costo de este. La ecuación fundamental que iguala el costo a los beneficios de la cuarentena es luego utilizada para determinar el momento óptimo de retirar el confinamiento. El beneficio de la cuarentena se origina en la disminución del factor de propagación de la pandemia y, si se conocen los parámetros de las ecuaciones, estos pueden aplicarse por cortos períodos para determinar el momento de su retiro. Este proceso es aplicado al caso de la República Dominicana usando un período de diez días, concluyéndose que a los 50 días, con un factor de propagación de 0.9, el costo de la cuarentena se hacía mayor que su beneficio.
Comparación de cuatro programas utilizados en la determinación de la composición genética ancestral de la población antioqueña
Authors: Duque Constanza , Parra María Victoria , Valencia Ana Victoria , Bedoya Gabriel , Ruiz-Linares Andrés
Published: October 2020

La población antioqueña posee una estructura genética compleja que refleja su historia de mezclas entre poblaciones europeas, africanas y amerindias. En este estudio se determinó la composición genética de 849 individuos de la población antioqueña, utilizando un panel de 75 marcadores informativos de ancestralidad y 4 programas que implementan métodos bayesianos para inferir la composición de la mezcla ancestral. La contribución europea (60%) fue dos veces mayor que la contribución amerindia (28%), ambas con una distribución amplia, y fue poca la contribución africana (12%). Se estimó el tiempo transcurrido desde el primer evento de mezcla, que fue de 11 generaciones por cada 100 cM, lo cual hace de esta población un recurso útil para implementar estudios de mapeo por mezcla. Se evaluó la utilidad del panel de marcadores, así como la robustez y utilidad de los diferentes programas utilizados.
Origen de la mutación G736A del gen Parkin en la población de Peque (noroccidente de Antioquia)
Authors: Arias P. William H. , Rojas Winston , Moreno Sonia , Lopera Francisco , Ruiz-Linares Andrés , Bedoya Gabriel
Published: October 2020

En una gran familia de la población de Peque (Antioquia) se hallaron individuos afectados por la enfermedad de Parkinson juvenil, debido a la mutación G736A localizada en el exón 6 del gen PARK2. Dada la composición triétnica de nuestraspoblaciones mestizas, y dado que esta mutación fue reportada en España, nuestro objetivo fue buscar su origen. Para ello, tipificamos con marcadores moleculares del cromosoma Y a 132 individuos no relacionados de la población general y a 31 de la familia, además con registros de apellidos en dos periodos diferentes. La mutación solo se encontró en la familia en la que se dio un solo haplotipo europeo (haplogrupo P) de apellido Valle, y un solo haplotipo nativo (Q1a3a) de apellido Salas, portadores de la mutación G736A. La mutación G736A ingresó con fundadores europeos (P) de apellido Valle, aumentó su frecuencia debido a un efecto fundador, al crecimiento interno y a cruces endogámicos en la familia y no en la población total, y se expandió en un contexto amerindio (Q1a3a) de apellido Salas.
Tejiendo vínculos: tres mecanismos socioadaptativos desplegados por el movimiento Sai Baba en Argentina
Authors: Puglisi Rodolfo
Published: October 2020

Luego de presentar los caracteres fundamentales del armazón institucional de la Organización Sri Sathya Sai Baba (osssb), surgida en la India, y de bosquejar la historia del movimiento Sai Baba en Argentina, en este artículo presento las que denomino tres estrategias socioadaptativas puestas en juego por el movimiento para favorecer la acomodación de sus creencias al campo sociorreligioso argentino, es decir, examino cómo se tejen puentes simbólicos con el trasfondo cultural local a fin de lograr una identificación con los valores de la sociedad receptora.
Evaluación del bioestimulante foliar (bioagro triple a) en la producción de tomate tipo chonto (lycopersicum sculentum mill) en dos ambientes de cultivo
Authors: Agudelo T. Diego Alejandro , Polanco Puerta Manuel Francisco
Published: October 2020

El tomate, es el cultivo hortícola de consumo en fresco más importante en el mundo y en Colombia. En el departamento de Risaralda se cultivan alrededor de 3.000 hectáreas bajo cubiertas plásticas, sin un paquete tecnológico adecuado que permita lograr la mayor rentabilidad del cultivo. En los últimos años, se ha implementado la aplicación de productos foliares que complementan la fertilización edáfica, como es el caso de los bioestimulantes o fertilizantes foliares con acción bioestimulante, convirtiéndose en una práctica común entre los cultivadores de tomate. La presente investigación tuvo como objeto evaluar el efecto del producto bioestimulante Bioagro Triple A, sin registro ante el ICA, producto que pretende ser una alternativa de fertilización foliar complementaria de bajo costo para una producción sostenible del cultivo de tomate tipo chonto. La evaluación se realizó, en las  instalaciones de la Universidad Nacional Abierta y a Distancia UNAD, ubicada en el Municipio de Dosquebradas Risaralda a 1.450 msnm y con precipitación promedio de 2.700 mm anuales, en dos ambientes: Bajo invernadero y a campo abierto. Se estableció un diseño experimental en bloques completos al azar, con tres tratamientos y 10 repeticiones. Las variables evaluadas fueron: altura de la planta, diámetro del tallo, numero de hojas, índice de área foliar, numero de racimos florales, numero de flores, numero de frutos, peso de frutos y producción total por tratamiento. Los resultados mostraron que el producto Bioagro Triple A puede ser una excelente alternativa económica y sostenible para los productores de este cultivo.
Experiencias en campo a partir de la reproducción sexual de botón de oro thitonia diversifolia – semillero de investigación sipass
Authors: Cortes Martínez Dayro Enrique , Olarte Blandon Oscar Javier , Timote Velez Sergio Andrés
Published: October 2020

El botón de oro es un arbusto herbáceo que ha tenido gran aceptación como forraje en las ganaderías del trópico y en la alimentación de especies menores. Lo anterior obedece que entre muchas de sus bondades se destaca su fácil adaptación a podas sucesivas y capacidad de rebrote, elementos importantes para ser tenido en cuenta como especie inclusiva en los bancos forrajeros. Su propagación se realiza de dos maneras especialmente por vía asexual (estacas) y sexual (semillas); la primera forma de propagación ha sido los más utilizados y difundidos en los últimos tiempos y hace parte de una práctica que pareciera la más viable y efectiva en la cultura forrajera del sector ganadero y pecuario.La semilla gamica tiene grandes ventajas ya que de un kilogramo se obtienen alrededor de 100.000 semillas con un 17% de germinación que comparados con otras investigaciones mencionadas se pueden llegar a producir; esto representa un número considerable y aceptable de plántulas que al propagasen pueden y permiten el establecimiento de cultivos forrajeros con factibilidad económica que favorece el campo.Las plantas post trasplante responde bien al procedimiento llegando a alcanzar alturas de 1 metro a los 90 días. Si se compara en términos de trabajo y logística la práctica de este método de siembra resulto atractivo para emprender actividades de propagación de tan importante especie forrajera.Es necesario continuar validando y generando nuevas formas que garanticen aún más la eficiencia de este método de propagación.
Prognostic and Diagnostic Coupling Framework Based on OSA-CBM strategy for Photovoltaic Generators
Authors: HASSAN ALI Mohamed , MEHMOOD Aamir
Published: October 2020

This article proposes a prognostic and diagnostic coupling framework based on the OSA-CBM (Open System Architecture for Condition Based Maintenance) for photovoltaic generators (PVG). At First, this work presents some PVGs performance degradation studies and the main degradation indicators. We select the Corrected performance ratio (CPR) as degradation indicator associated with the Loess data analysis method to avoid aberrations and errors from acquisition system. Then, the main methods of coupling diagnostic and prognostic processes are explained: Watch Dog, Prognostic Enhancements to Diagnosis Systems (PEDS), Integrated Predictive Maintenance Systems (SIMP) and OSA-CBM. This last strategy with its seven specialized layers permits the interoperability of both processes. The monitoring system provides health indicators of PVGs and results are returned to human operator. The annual reduction rate of the CPR and reduction rate (Rd), allows us controlling the proposed coupling framework. This approach is validated with experimental data collected on four photovoltaic installations from the IEA PVPS Task13 database.
Study of the Effect of Alfa-x to the Urea Formaldehyde Adhesive on Plywood
Authors: ÖZALP Murat
Published: October 2020

This study investigated the effect of adding Alfa-x to the of urea-formaldehyde (UF) adhesive. The content of free formaldehyde and the bonding specifications were examined. The three-layered plywood of poplar (Populus x eureamericana) and ekaba (Tetraberlinia bifoliolata) was prepared by adding alfa-x to adhesive mixtures in specified amounts. The content of free formaldehyde, withdrawal shear strength, and bending strength were studied in the experimental plywood. The strength specifications of plywood bonded with this resin were slightly reduced by adding the Alfa-x to the adhesive mixture. There was also a moderate decrease in the content of free formaldehyde.
Computation of effective source size for extended sources
Authors: Marshall Wesley J.
Published: October 2020

A laser hazard evaluation compares the potential laser exposure to the maximum permissible exposure (MPE). Direct intrabeam viewing of a collimated laser beam produces a minimally sized retinal image. Viewing other laser sources often produces a larger retinal image known as an extended source. An optical limiter is designed to protect the eye from direct laser exposure through a combination of absorption and scattering, producing an extended source. Diode lasers in combination with diffusers also produce extended sources when viewed at a close distance. A substantial increase in the MPE is allowed for extended sources, based on the size of the retinal image. The larger retinal image produced by the optical limiter does not exhibit a Gaussian or top-hat profile, making it often difficult to judge its effectiveness. Therefore, it is necessary to define methods to quantify the reduction in hazard. The partial areas method that is currently used overestimates the reduction in hazard from a single extended source with a strong central peak.
Jenis Keluhan dan Cara Penanganan Keluhan di Hotel Holiday Inn Resort Baruna Bali
Authors: Rendrawan Gede Rendrawan , Trianasari Trianasari , Mahardika A.A. Ngr. Yudha Martin
Published: October 2020

This study aims to determine the types of complaints and how to handle the department f & b service at the Hotel Baruna Bali Holiday Resort. This research is a qualitative descriptive study using interviews and observations as a method of collecting data. The informants who participated in this study were tour operators in the field of administration. The results showed that there were several types of complaints at the F&B Service Department at the Baruna Bali Holiday Resort Hotel. The results showed that the types of complaints by the F&B Service Department at Baruna Bali Holiday Resort Hotel were the lack of professional waiters / waitresses, when serving guests, waiters / waitresses were not polite when serving guests, guests waiting for orders too long. There is a procedure for handling guest complaints at the F&B Service Department at the Baruna Bali Holiday Resort Hotel called ILEAD. This procedure serves as a guideline for employees in the department f & b service in handling complaints
Penerapan SOP Bagi Mahasiswa PKL Pada Departemen Food And Beverage Service The Oberoi Beach Resort, Bali
Authors: Wahyuni Ida Ayu Putu Padma Sri Wahyuni , Parma I Putu Gede
Published: October 2020

This study aims to explore (1). The SOP delivery process for intern students in the Food and Beverage Service department (2). The implementation of SOPs by intern students in the Food and Beverage Service Department. This research was a qualitative descriptive research, with interview method and documentation in data collection. The subjects in this study were HRD staff and seniors in the room service section at The Oberoi Beach Resort, Bali. The results showed that (1). The process of delivering SOP for internship students was done by providing material during pre training, role play training and delivering SOP 15 minutes prior to new shift. (2). The SOP was delivered in the form of briefing and training for trainees. From the results of this study it may be necessary to further research on the importance of understanding SOP for intern students in a broader scope
Karakteristik dan Keterampilan Pramusaji di Era Revolusi Industri 4.0 pada Hotel The Oberoi Beach Resort Bali
Authors: Gita Gede Elga Krisna , Mahardika Yudha M. , Widiastini Ni Made Ary
Published: October 2020

This study aimed to finding the characteristics and skills of waiters in the era of the industrial revolution 4.0 on The Oberoi Beach Resort Bali. This research was a qualitative descriptive study, using observation and interviews as a method of collecting data. Subject of the study were drawn from Hotelier in the field of governance and HRD. In addition to foreign language skills, good communication, there are additional skills and characteristics in the revolutionary era 4.0 found in this study are 4 characteristics (technological literacy, following developments in the field of governance, being able to work efficiently and effectively and mastering technology and systems) and 4 skills (following the times, can use new tools related to operational work, follow the latest service trends and understand the system and computers) waiters in the era of the industrial revolution 4.0. In the future, it was expected that there will be studies that discuss the same topic in order to study more sources and references related to the characteristics and skills of waiters in the 4.0 era, so that they get better and more complete results.
Strategi Peningkatan Keterampilan Pramusaji di Makase Restaurant
Authors: Wikantini Ida Ayu Kade Winda , Andiani Nyoman Dini
Published: October 2020

This research aims to determine the strategy of upgrading waiter/ss skills at Makase Restaurant. The subject of this study is Supervisor and employee of Makase Restaurant. The object of this study is a strategy to improve the skills of waiter/ss at Makase Restaurant. Data collection methods are observations, documentation and interviews. The results of this research are (1) waiter/ss constraints in serving guests at Makase Restaurant is a limitation of foreign languages because not all guests can speak English cause slow service and guest complaint. (2) the strategy used to improve the skills of waiter/ss is to provide consistent training, competency tests, and hold competitions in hotels that can affect operational smoothness, increase guest satisfaction and increase sales.
EVALUASI TATA KELOLA TEKNOLOGI INFORMASI DI DINAS KOMUNIKASI DAN INFORMATIKA MENGGUNAKAN FRAMEWORK COBIT 5
Authors: Hanif Asnita , Giatman M. , Hadi Ahmaddul
Published: October 2020

Perkembangan teknologi dan informasi telah memberikan dampak terhadap organisasi, baik instansi swasta maupun pemerintahan, maka diperlukan evaluasi untuk memberikan saran dan masukan. Tujuan penelitian ini adalah untuk menganalisis keadaan tata kelola teknologi informasi di Dinas Komunikasi dan Informatika Kota Payakumbuh. Metode penelitian ini yakni deskriptif kualitatif, dengan subjek Dinas Komunikasi dan Informatika Kota Payakumbuh, dan objek penelitian ini adalah tingkat kapabilitas tata kelola teknologi dan informasi. Penelitian ini menggunakan framework COBIT 5 sebagai alat ukur model proses kapabilitas. Metode pengumpulan data yang digunakan adalah metode observasi dan studi literatur. Data yang telah diperoleh dianalisis menggunakan metode analisis statistik deskriptif kualitatif. Hasil pelenitian ini adalah proses DSS01 (Manage Operasional), DSS03 (Manage Problems) dan DSS05 (Manage Security Services)Â Â  telah mencapai level 1 Performed ProcessÂ  karena atribut PA 1.1 mencapai kategori L. Simpulan penelitian ini adalah terdapat kelemahan dalam tata kelola dan manajemen teknologi dan informasi pada Dinas Komunikasi dan Informatika Kota Payakumbuh.
OPTIMALISASI PEROKSIDASE DARI BUAH BELIMBING MANIS (Averrhoa carambola) UNTUK DEGRADASI SENYAWA FENOL
Authors: Dwiyanthi Ni Made Ratna , Oviantari Made Vivi , Parwata I Putu
Published: October 2020

Tujuan dari penelitian ini untuk mengetahui pH dan suhu optimal yang diperlukan oleh ekstrak peroksidase dari buah belimbing manis dalam mengkatalisis reaksi degradasi senyawa fenol. Subjek penelitian ini adalah peroksidase yang diisolasi dari buah belimbing manis (Averrhoa carambola) yang sudah matang, sedangkan objek penelitian adalah pH dan suhu optimum yang diperlukan oleh peroksidase dari buah belimbing manis (Averrhoa carambola) untuk mendegradasi fenol. Peroksidase diekstraksi dari buah belimbing manis (Averrhoa carambola) yang sudah matang menggunakan blender dan disentrifugasi dengan kecepatan 5000 rpm selama 120 menit. Ekstrak enzim kemudian diuji aktivitasnya dalam mendegradasi fenol pada variasi pH dan suhu. Pengukuran konsentrasi fenol dilakukan dengan menggunakan spektrofotometer UV-Vis. Hasil penelitian menunjukkan bahwa degradasi senyawa fenol dengan biokatalisator peroksidase dari buah belimbing manis berlangsung optimum pada pH 5 dan suhu 65ËšC dengan nilai efisiensi 72,71%.
Guía de enseñanza para el aprendizaje exitoso en educación a distancia universitaria
Authors: González Jaimes Elvira Ivone
Published: October 2020

El objetivo de este estudio fue analizar las estrategias exitosas de aprendizaje usadas por estudiantes universitarios para adquirir conocimiento en el Portal de la Plataforma Educativa (Seduca3) del nivel superior en educación a distancia, perteneciente a la Universidad Autónoma del Estado de México (UAEM). Para ello, se realizó un diseño no experimental de tipo documental y de campo con corte trasversal y método mixto (cuantitativo y cualitativo). El instrumento usado fue aplicado a 165 estudiantes con aprendizajes significativos de cinco carreras universitarias correspondientes a las áreas de ciencias económicas administrativas y ciencias biológicas. Con esto se procuró obtener estándares exitosos de enseñanza para ofrecer a los diseñadores de plataformas educativas guías para homologar y facilitar el aprendizaje. Los resultados demuestran que las estrategias que llevan al éxito académico son las siguientes: 1) conocimiento de objetivos y criterios de evaluación (qué y para qué se va a aprender); 2) control del contexto (con qué se va a aprender); 3) atribuciones externas para el aprendizaje (cómo se va a aprender), y 4) habilidades de interacción social y aprendizaje con compañeros (con quién se va a aprender). Esta guía facilita la recuperación de lo aprendido, expresado con la elaboración, y asociado con la retroalimentación positiva por logro, la cual genera la motivación intrínseca requerida para continuar aprendiendo. En pocas palabras, para promover un ciclo completo de aprendizaje significativo el estudiante debe tener claro “por qué, adónde, cómo, cuándo, cuánto, dónde y con quién” está aprendiendo. Por eso, se recomienda a los diseñadores de plataformas educativas que estos adverbios interrogativos aparezcan de forma explícita en los recursos brindados a los alumnos para facilitar y precisar la adquisición del conocimiento.
The effectivity of used-oil as quenching medium of 42-CrMo4 steel for automotive materials
Authors: Hariningsih Hariningsih , Sumpena Sumpena , Sukarjo Heribertus
Published: October 2020

The research aims to investigate the effect of the cooling medium on the hardness characteristic and microstructure of the 42CrMo4 steel due to hardening treatment at a temperature of 830°C and holding time of 30 minutes. Various oil such as SAE-10W40, SAE-20W50, SAE-40, and used oil was used in the cooling medium. The changes in product size, hardness, and microstructure have been carefully assessed. The results indicated that the viscosity of the coolant medium strongly influenced the cooling rate of the cooling medium, hardness, and microstructure. SAE-10W40 oil and SAE-20W50 oil only needed 2 hours to return within room temperatures before quenching, whereas SAE-40 oil and used oil took 3 hours. The sample size did not change after hardening-quenching. However, there was a residual carbon layer on the sample surfaces. Quenching caused the changes of microstructure from pearlite and ferrite to ultrafine double phase, consisting of martensite and austenite, which were unable to transform during rapid cooling. The highest hardness value was achieved by the treated product, which was quenched in SAE-10W40, which had 54.59 HRC. The high hardness was attributed to the content of 95% martensite. However, used-oil caused in similar hardness as SAE-20W50.
Performance prediction of trailing-edge cooling system of gas turbine blade using detached eddy simulation
Authors: Jamaldi Agus , Hassan Hassan Khamis
Published: October 2020

This study evaluates the performance of the trailing-edge (TE) cooling system in a gas turbine blade. Eddy Simulation (DES), based on the turbulence model of Spallart-Almaras (SA), was used to simulate the TE cooling system. A TE configuration with a five-row staggered pin-fin arrangement was employed as a computational domain. Three parameters, i.e., the coefficient of heat transfer on the pin-fins surface (hpin), the coefficient of discharge (CD), and the effectiveness of adiabatic film cooling were used to assess the performances. The findings denoted that the heat transfer fluctuations occurred on the surface of the pin-fins in each row. The discharge coefficient increased with the rising of the blowing ratio. The trend predicted data of adiabatic film cooling effectiveness were in good agreement with realistic discrepancies compared to other researches, mainly for higher blowing ratio. The average effectiveness along the cut-off region was to be sensitive to the blowing ratio changes, which was attributed to the structures of turbulent flow along the mixing region.
Wearable upper limb motion assist robot for eating activity
Authors: Kashtwari Uzair , Azlan Norsinnira Zainul , Shahdad Ifrah
Published: October 2020

Many people all around the world are suffering from various types of disabilities and need to depend on others to perform activities of daily living. One of the essential daily living activities is eating. The disabled people should be able to eat their food independently at any time and place, without relying on the caregivers. This paper presents the development of a new wearable upper limb motion assist robot for helping the disabled to eat by themselves. The motion assists robot consists of two degrees of freedom (DOF) movement, focusing on the two most crucial upper limb movements in eating activity, which is the elbow flexion/extension and forearm pronation/supination. A light-weight material was used for the fabrication of the wearable motion assist robot, and Arduino was utilized as the microcontroller. The originality of the study was in terms of the design, operational sequence setting, and kinematic analysis of the wearable upper limb motion assist robot that was explicitly focusing on eating activity. The resulted prototype was portable, compact, light in weight, simple and low cost. The experimental results have proven that the proposed wearable upper limb motion assist robot for eating activity was successful in helping the users to perform the main upper extremity motions in eating. The success rate of the proposed system was 80%, and it took 6 seconds for the system to complete one feeding cycle.
Selection of technologies for metal film application using physical deposition techniques
Authors: Glushko S. P.
Published: October 2020

Introduction. Obtaining high-quality thin metal films is important for advances in the technologies of applying antifriction and wear-resistant coatings on cutting tools or parts of friction couples. Various techniques of physical film deposition are applied using technologies of cathode (ion), magnetron and ion beam assisted sputtering. The work objective is to analyze, compare and determine the feasibility of techniques for the physical deposition of thin metal films when applying antifriction and wear-resistant coatings on cutting tools or parts of friction couples.

Materials and Methods. Technologies of cathode (ionic), magnetron and ion-beam sputtering are considered. Schematic diagrams, conditions and parameters of the considered processes are presented.

Results. An advanced technology for the deposition of thin films, alloying and hardening of the surfaces of metal parts is magnetron sputtering. Continuous wave (cw) magnetrons are used to apply coatings of complex composition or multilayer coatings on flat substrates. Ion beam sputtering is considered a slow sputtering of the target surface by bombardment with a high-energy ion beam and deposition on the substrate surface. Under the ion implantation, the surface of metals is doped with recoil atoms, which receive high energy from accelerated ions and move a few nanometers deeper. This enables to obtain ultra-thin doped layers. Low temperature of ion implantation, the possibility of sufficiently accurate control of the depth and the impurity distribution profile, create the prerequisites for the process automation. Wear tracks are more acidified under the same wear conditions on implanted steel compared to non-implanted steel. The nonequilibrium process under ion implantation causes the formation of such alloys in the surface layers that cannot be obtained under normal conditions due to diffusion of components or limited solubility. Ion implantation makes it possible to obtain alloys of a certain composition in the surface layer. Surface properties can be optimized without reference to the bulk properties of the material. Implantation is possible at low temperatures without a noticeable change in the size of the product.

Discussion and Conclusion. Cathode (ion), magnetron and ion-beam sputtering have common advantages: due to the relatively low temperature, the substrate does not overheat; it is possible to obtain uniform coatings; the chemical composition of the deposited coatings is accurately reproduced. The rest of the advantages and disadvantages of the considered methods are individual. The results can be used to create thin films through alternating magnetron and then ionbeam deposition processes, which enables to obtain films uniformly modified in depth. This is important in the production of parts of friction couples and cutting tools to improve their quality.
Mathematical model of shaping toothed products using volumetric tool with one motion parameter
Authors: Silich A. A. , Yusupova Eh. M.
Published: October 2020

Introduction. The development of a mathematical model of one-parameter shaping of a toothed product is considered. As an example, shaping of the side surface of the teeth of the Novikov gearing is studied; the mode and magnitude of the change in the shaping error heightwise the wheel tooth are shown. The work objective was to develop a mathematical model of the surface of the product teeth as a generating surface envelope of the tool. A computational and experimental study is carried out. The mathematical models obtained can be used in devices with copiers when shaping the side surface of the teeth of the Novikov gear. As an example, we consider the deviation behavior of the teeth profile of the Novikov gear with the original profile of DLZ 0.7-0.15

Materials and Methods. When building the model and studying its characteristics, the mathematical tools of the gearing theory, calculation procedure for cylindrical gears (A.A. Silich’s author development) were used. The paper proposes new mathematical models of the equations of the lateral surface of the gear teeth formed with a tool whose axial profile coincides with the original one. In the model under consideration, the tool moves along the axis of the product while the latter rotates on its axis. In the course of the study, numerical modeling was carried out to determine the error value in shaping the product profile using the tool.

Results. New mathematical models and software have been developed for numerical simulation of the shaping of a toothed product using a tool with one independent motion parameter. An algorithm has also been developed to determine the deviation error of the real profile from the nominal one for the tooth of the Novikov gear. Solutions to accurately reproduce the tooth profile are provided.

Discussion and Conclusions. The parametric method of analytical description of the surface used in the work simplifies the calculation of the cutting tool displacements in the problems of numerical control. Solving the problem of synthesizing the technology of workpiece surface treatment on metal-cutting machines provides the development of a description of the entire shaping process and requires the representation of the workpiece surface in the form of a mathematical model. The results obtained can be used under creating finishing methods for processing teeth when improving the quality of gear wheels and gear drives, as well as production efficiency.
Oral Diseases Panorama in Dermatology: An Observational Study
Authors: Khan Mohd Rizwan
Published: October 2020

Background: The oral cavity is a mirror of the body, entry point to food, antigens, and microorganisms. Oral cavity with mastication and speech, also have a role play in immunological defense. The Oral mucous membrane is in link with skin, oropharynx, and nasopharynx. The oral cavity and anterior two-thirds of the tongue are formed by the ectoderm and that is why from a dermatologist's viewpoint, an oral opening is especially imperative and involved in a range of systemic and skin disease, also affect teeth and gums. The body's natural protection is in good quality oral care. Oral problems when associated with skin conditions require oral care as it affects the quality of life and enable dermatologist and dentist in the identification and diagnosing of systemic disease. Oral illness can bring into being from infection, inflammation or neoplastic, immunological, benign, or malignant. Results: The oral cavity is a mirror to a variety of systemic and cutaneous diseases. Interpretation of the symptom and signs of systemic diseases help early diagnosis. However, while not correct oral hygiene, microorganisms will reach levels that may result in oral infections and decay. The health status of our oral cavity can give us a strong signal of the health of our bodies. It proceeds as a premature warning system. That's why the oral cavity should be examined in one piece from the buccal mucosa to the oropharynx. Conclusion: The mouth is a straightforwardly available window of the body. In contemplation with development, composition, and utility oral cavity is only one of its kind. It is a two-way road as systemic skin disease has oral manifestation. Interpretation of the symptom and signs help in identification and early diagnosis of systemic diseases. Oral illness can bring into being from infection, inflammation or neoplastic, immunological, benign, or malignant. That's why the oral cavity should be examined in one piece from buccal mucosa, lips, tongue, gum, teeth, palate to the oropharynx. Knowledge of systemic diseases is vital in day to day clinical practice, often oral manifestation is the most significant or first sign of systemic illness. So dermatologists and dental surgeons are conscious of oral complaints and their association with systemic disease.
Prevalence of Intestinal Parasitosis in Children of a Primary School in Pedro Juan Caballero - PY
Authors: Delgado do Amaral Kayque Wellek , Garlet Cristiane Venturini , Júnior Daniel Contreira , Gomes da Silva Marcus Tadeu Fernandes , Cogorno Laura Simões , Lorenzoni Brandão Luiz Eduardo , Marciano Danilo Pigosso , Militão da Silva João Miguel , Manfredini Rebecca Corrêa , Fortaleza de Melo João Italo
Published: October 2020

Introduction: Parasitosis is a type of endoparasitism, which is directly related to sanitary conditions and is an important public health problem in developing countries. Objective: To determine the prevalence of intestinal parasites in children attending a primary public school in Pedro Juan Caballero - PY. Materials and Methods: 85 (eighty-five) stool samples were analyzed using the centrifugal sedimentation technique. Results: Cysts and/or parasite eggs were observed in the stool samples of 67 (78.8%) children. Giardia lamblia cysts were those that showed the highest incidence in the children. Conclusion: The high Giardia lamblia index demonstrates the lack of access to drinking water for consumption, inadequate sanitation and the absence of a public health network. This study highlights the importance of encouraging the use of serial analysis of stool, strengthening preventive measures for parasitosis, developing protocols for their approach, and designing a strategy that includes the preschool population in the programs that periodically evaluate the development of children.
ANALISIS KETERLAKSANAAN PROBLEM BASED LEARNING BERBANTUAN MULTIMEDIA PEMBELAJARAN LARUTAN ASAM BASA TERHADAP KETERAMPILAN MEMECAHKAN MASALAH
Authors: Lestari Dian Indah
Published: October 2020

AbstractThis study aims to determine the extent of problem-based learning model implementation assisted instruction multimedia with the type of strategic performance problems in improving students’ problem solving skills on acidic and alkaline materials. The approach used in this research is mixed approach (mix method) with a sequential exploratory model type (model sequence of discovery). The sampling technique is done by purposive sampling. The instrument of research is in the form of observation sheet implementation of problem-based learning model both from teachers and students and also student essay test. The correlation of problem-based learning model implementation with students’ problem solving skill is sought with product moment. The implementation of problem-based learning model by teachers and students has been done according to the principle of problem-based learning model of each meeting. The implementation of problem-based learning model by students with average percentage of 88,44% and ability to solve student problem with average percentage of 69,02%. The correlation of problem-based learning model implementation assisted instruction multimedia of acid-base solution with the problem solving skill is categorized by mediocre with average of 0.43. It can be concluded that the problem-based learning model assisted instruction multimedia acid-base learning in class XI MIA 1 SMA Islam Al-Falah Kota Jambi has been implemented well by teachers and students and also the problem solving skills of students have emerged. Keywords: Problem Based Learning, Multimedia, Strategic Permofance, Problem Solving, Acid and Alkaline
DESAIN MODUL PRAKTIKUM BERBASIS PROBLEM BASED LEARNING (PBL) PADA MATERI LARUTAN ELEKTROLIT DAN NON ELEKTROLIT
Authors: Mutiya Mutiya , YENTI ELVI , Afrianis Neti
Published: October 2020

Practicum guides that usually exist in school was student workbook taken from chemistry book that were too a lead and not using a learning model so that it did not motivate students to think creatively. Therefore, it was necessary  a teaching material design that completing learning model. It was a Practicum module Problem Based Learning based. This research aimed at knowing the validity, prcaticality levels and student respond toward practicum module produced. It was a Research and Development (R&D) with Borg and Gall model. Subject of this research were a lecturer of material expert, a lecurer of  media expert, two teacher of chemistry and tenth students at the Eleventh Grade of MIA at State Senior High School 2 Kuok. The object of this reserach were practicum module Problem Based Learning  (PBL) based on electrolyte solution and non electrolyte lesson. Validity test questionnaire and practicality test questionnaire  and student respond questionnaire were the techniques of collecting the data. Data analysis was done by using Descriptive qualitative and quantitative analysis techniques. The result of data analysis shows that the validity level of practicum module Problem  Based Learning  (PBL) Based was 92.38% (Very valid) and the practicality level  was 85.60% (Very practice). Based on this research, it could be concluded that the Practicum Module Problem Based Learning  (PBL) Based on Electrolyte Solution and Non Electrolyte Lesson were valid and practice and got a good student respond to be used as teaching material in practical activity at school. Keywords : Practicum Module, Problem Based Learning, Electrolyte Solution and Non Electrolyte Lesson.
ANALISIS HUBUNGAN HASIL BELAJAR DENGAN KETERAMPILAN BERPIKIR KRITIS PADA MATERI HIDROLISIS GARAM.
Authors: Afrianis Neti
Published: October 2020

Critical thinking skills is a very important aspect that students must have in learning chemistry, especially in solving problems that require deeper alternative solutions. This research aims to analyze the relationship of critical thinking on student learning outcomes on salt hydrolysis material. In this research, there were 48 students sampled, the technique used for sampling was purposive sampling. For data analysis in this research using correlation and regression tests with a probability value of 0.05. From the results of the linearity and correlation tests found that students 'critical thinking skills have a relationship with student learning outcomes on salt hydrolysis material by 0.599 and the regression results also show the same thing that there is a significant relationship between students' critical thinking skills with learning outcomes on salt hydrolysis material that is seen from the comparison of the significance value (0,000) with a probability value (0.05), (0,000 <0.05) means that there is a positive relationship between critical thinking skills with student learning outcomes on salt hydrolysis material in SMAN 1 Kampar. The contribution or contribution of students' critical thinking skills to learning outcomes in the hydrolysis material is 35.9% while the remaining 64.1% is influenced by other factors. The higher the level of critical thinking skills of students, the greater the significant functional relationship to learning outcomes, and also the greater contribution / contribution of critical thinking skills to student learning outcomes.Keywords : Critical thinking skills, learning outcomes, correlation and regression analysis, salt hydrolysis
Metagenomic Study of Bacterial and Archaeal Populations during Anaerobic Digestion of Lignocellulosic Waste in Lab-scale Biogas Reactors
Authors: Ndubuisi-Nnaji Uduak U. , Inyang-Enin Ata O. , Ofon Utibe A. , Ibhadode Osagie
Published: October 2020

This study evaluated using 16S rDNA gene-based metagenomics technique the populations of bacteria and archaea in digestate samples from lab-scale anaerobic bioreactors digesting pretreated and untreated coconut husk fiber, pineapple floret and banana stem. Result of biodegradability experiment indicated high microbial activity in digestate (biogas slurry), with untreated banana stem having the highest total solids (TS) and volatile solids (VS) removal efficiencies of 78.3 % and 92.9 % respectively. Similarly, all pretreated substrates exhibited higher TS and VS losses with corresponding TS (77.8 %) and VS (87.2 %) removal efficiencies. This TS and VS removal rates signaled increased rate of organic matter decomposition with concomitant biogas productivity. Diversity comparisons performed between samples showed rich microbial diversity in untreated sample than the pretreated sample. Taxonomic composition revealed that, for untreated samples at the phylum level, the bacterial community was predominantly Firmicutes (relative abundance 97.0 %), with 0.30 % Actinobacteria and 0.10 % Proteobacteria. The genus Oxobacter (35.0 %), Clostridium (12.0 %) and Ethanoligenens (10.0 %) were ubiquitous and abundant in the untreated sample. The archaeal community was however dominated by the Euryarchaeota with one methanogenic order Methanomicrobiales, and a high abundance of the genera Thermacetogenium. For pretreated samples, at the phylum level, bacterial community was also dominated by Firmicutes (95.0 %), followed by Proteobacteria (1.02 %), Actinobacteria (0.18 %) and Tenericutes (0.06 %). The genus Clostridium (41.0 %), Ethanoligenens (29.0 %) and Lactobacillus (15.0 %) were also ubiquitous and abundant in the pretreated sample. Archaeal community was also dominated by Euryarchaeota with the two methanogenic orders Methanomicrobiales and Methanosarcinales dominating. The major microbial groups were hydrolyzing and fermenting populations. These findings revealed rich microbial assemblage and diversity among microbial communities in biogas digestate.
Evaluation of Serum Haematological and Electrolyte Changes in Wistar Rats Administered Some Polyherbal Preparations
Authors: Amagon Kennedy Iliya , Wannang Noel Nen’man , Bukar Bukata Bayero , Falang Kakjing Dadul , Kolawole Jacob Adegboyega , Ajima Ukpe , Damen James Garba , Agabi Yusuf Amuda , Kutshik Richard Joseph , Longdet Ishaya Yohanna , Gomerep Simji Samuel , Shittu Ismaila , Davou Stephen Daniel
Published: October 2020

Coronavirus Disease-19 (COVID-19) has today become a major public health threat. Despite several ongoing clinical trials, there is as yet no specific treatment for this disease. This study evaluated the effects of 3 polyherbal mixtures (CoV-1, CoV Pla-2 and CoV Pla-3) on some electrolyte and haematological parameters in laboratory animals.

The parameters evaluated were PCV, HGB, MCV, MCH, MCHC, RBC, WBC, neutrophils and lymphocytes counts, including Na+, Cl-, HCO3-, K+.  Treatment was per oral with doses of 100, 200 and 400 mg/kg for the 3 polyherbal mixtures. Control group had 0.1 mL of distilled water per oral. The extract was safe up to 5000 mg/kg. An insignificant (P>0.05) decrease in RBC was observed at all doses except for 200 mg/kg for CoV Pla-3 which was significant (P<0.05) compared to control. When compared to control, an insignificant increase in the mean lymphocyte values in all extracts was observed. WBC in CoV Pla-1 and CoV Pla-3 increased, compared to control, as well as MCV, MCH for all polyherbal mixtures. Neutrophils increased in the rats administered the highest doses of Cov Pla-1 (200 and 400 mg/kg) and CoV Pla-3 (100 and 200 mg/kg) extracts. An insignificant difference (P>0.05) in serum levels of Na+, K+, Cl- and HCO3- were observed in all test animals, compared to control. The results obtained in this study indicate that the extracts did not cause significant changes in haematological parameters evaluated, which implies it is non-toxic.
Pigmented Pseudoalteromonas Sp. Isolated from Marine Sponge with Anti-Microbial Activities against Selected Human Pathogens
Authors: Hamid Tengku Haziyamin Tengku Abdul , Rosmadi Awanis
Published: October 2020

Marine sponges have been the potential source of bioactive compounds with potent antimicrobial properties. Sponge associated microbes significantly provide the route of biosynthesis of some of these compounds. In this work, a total of 100 bacterial colonies were screened from a marine sponge from Class Demospongiae, which has been collected from Merambong Island, the state of Johor, Malaysia. In disk diffusion assay, only 2 out of 100 isolates; namely C40 and C52, were able to demonstrate active inhibitions against selected human pathogens (Pseudomonas aeruginosa, Escherichia coli, Bacillus subtilis, except for Staphylococcus aureus). Isolates C40 and C52 were characterized to be Gram negative short rods, non-spore formers and catalase positive. Unlike the majority of other isolates from sponge which were Gram positive rods, Isolate C40 and C52 are Gram negative rods which grew in yellow pigmented colonies. Genotypic characterization using 16S ribosomal RNA sequencing were carried out on each isolate (accession number for C40 and C52 is MT645493 and MT645494, respectively). The 16S ribosomal RNA sequences revealed that these strains belonged to genus Pseudoalteromonas sp. with 97-98% similarities. Inhibitions studies showed that this sponge associated microorganisms potentially produce anti-microbial compounds useful for biotechnologies.