bluuebunny/crossref_metadata_2025 huggingface dataset:
Characterization Study and Fabrication of Aluminium Bronze Wheel Rim for Automobile
Authors: Yuvaraja S. , Kumar Sahoo Dillip
Published: August 2020

The wheel rim plays a vital role for good running of the vehicle and the most important safety components from a structural point of view. It must be made with adequate strength and lighter in weight to reduce the unsprung mass of the vehicle and plays a major role in vehicle dynamics. The present study deals with the comparison of structural analysis of aluminium bronze alloy wheel rim with three different compositions to enhance corrosion and fatigue resistance. The design of the wheel rim was created by CATIA V5 and structural behaviour was analysed by ANSYS workbench. The results showed that combination of 90% Al alloy and 10% CuSn) gives adequate strength compared to other combinations of aluminium and bronze. The fabrication of the rim was done by casting methods. Various test like impact, shear, hardness and ultimate tensile tests were conducted to know the mechanical strength of the rim. Salt spray corrosion test was carried out to know the corrosion behaviour of the rim and the results show that no corrosion was found up-to 240 hours
Vehicle Emission Analysis by using Refined Sunflower Oil as Alternate Fuel and Varying the Injection Timing in Diesel Engine
Authors: Hemanandh J. , Ganesan S. , Sai Puneeth C. Sathya , Tejesh G. Venkata Sai Naga Manikankata
Published: August 2020

In this study, the emissions of Kirloskar Direct Injection 4-stroke Diesel engine, single cylinder air cooled, 4.4 kW, constant speed at 1500 rpm, compression ratio 17.5:1 with different blends of diesel refined sunflower oil is analysed. Methyl Esters of refined sunflower was trans-esterified before blending with diesel. The main objective of this experiment is to study the NOx, CO, HC and smoke emissions by varying the injection timing and load. The experiments were conducted with various blends - BRSF10, BRSF30, BRSF40, at different pressures (180 bar, 210 bar, and 240 bar) and different level of loads (0%, 25%, 50%, 75%, 100%). A 3-hole nozzle was used to inject the fuel. The combustion results were studied using AVL gas analyser. The results show that engine temperature decreases at higher loads by 2Â°, NOx and CO decreases and there was a marginal increase in HC and the exhaust temperature.
Investigation of Hybrid Locomotive Robot for Anti-Personnel Mine Detection
Authors: Venkatesh S. , Dhanasekar J. , Swaminathan Vasanth
Published: August 2020

Most of landmine detection robots proposed so far have been strongly restricted from locomotion inside the mine field because they cannot cross over the mine. So we have proposed a mine detection robot with hybrid locomotion, which can enter inside the minefield with low ground surface contact, which can cross over the mine instead of changing its path and scan landmines directly using Electro Magnetic Induction sensor. The hybrid locomotion proposed in the robot uses the frame walking technique and the conventional wheeled locomotion. The robot switches over the locomotion mechanism from wheeled to leg when mine is detected and vice versa with a lead screw mechanism. The leg locomotion is achieved by frame walking technique where the two frames translate with the help of lead screw mechanism. A purpose of adopting this combination is to evade anti-personnel landmines which are relatively smaller in comparison to their anti-tank landmine counterparts. The robot initially starts in wheeled mode and upon detection of metal, pulls in the frame walking algorithm. The robot also deploys an obstacle avoidance algorithm when working in wheel mode.
Aerodynamic Investigation on Performance Enhancement of NACA 2412 Airfoil with Suction Assistance
Authors: Venkatesh S. , Vimal S. Rakesh , Manigandan S. , Gunasekar P.
Published: August 2020

Advanced transport aircraft concept has active boundary-layer control by slot suction which reduces drag by stabilizing the laminar boundary. Thus, the prevention of transition and delaying the boundary layer separation will lead to a higher lift co-efficient. The influence of location and position of suction, suction flow rate and suction hole width on aerodynamic performance have greater influence. These examine the potential payoff for boundary-layer control as applied to the advanced-concept wings. An experimental work deals with the continuous normal suction from the wing upper surface effects on the aerodynamic forces. The wing model with NACA-2412 has been made to achieve normal suction from the wing upper surface by means of four slot channels. The results showed that the continuous normal suction can significantly increase the lift to drag force ratio and this ratio is increasing as the strength of suction increases. There is a convincing decrease in drag and pressure loss and an increase in max lift, which in turn improves the overall performance of the aircraft. While multi-hole suction control can reduce drag much more efficiently than single hole suction control, the position of the suction hole has a greater effect on reducing pressure losses than the suction flow rate.
An Empirical Investigation of Biodiesel Engine Fuelled with Palm Oil Methyl Ester Biodiesel Blends
Authors: Samanta Abhishek , Roy Prokash C.
Published: August 2020

Compression ignition, single zone biodiesel engine model has been established based on engine geometries (stroke, cylinder diameter, connecting rod length and diameter of crank). Deviation in specific heat ratio of engine cylinder charge and burned gases has been established to anticipate the pressure fluctuation relative to the crank angle, engine output and mean effective pressure relevant for Palm Oil Methyl Ester (POME) biodiesel. Predicted model for biodiesel engine has been verified using diesel and POME blended biodiesel (B5 and B10). In order to find out the performance results and combustion nature, constant engine speed (1500 rpm) is maintained during the experiments under 0%, 25%, 50% and 100% loading. It has been observed that when the experimental engine setup was fuelled with POME B10, the performance is depleted for loading other than 50% to 75% load condition and combustion aspect of B5 and B10 POME is slightly changed in comparison with diesel.
Experimental Investigation on Performance and Emission Characteristics of Diesel Lean Burn HCCI Engines
Authors: Gowthaman S. , Pradeep A. Pakiya
Published: August 2020

The purpose of this study is to analyse the effect of premixed diesel fumigation on the performance and emission characteristics of Homogeneous Charge Combustion Ignition (HCCI) engine and to optimize the diesel fumigation temperature. An experimental investigation was carried out on a single cylinder, four stroke, water cooled, port injected Kirloskar SVI engine. An electric air heater is fixed at the suction pipe. During the experimental study, the diesel fuel was premixed by port injector and get vaporized or fumigated by heated suction air. After the process of heating and premixing, the diesel has changed its phase and mixed with the air in the form of partially homogenous mixture. During the test, the engine was operated at different diesel fumigation temperature of 100 C, 110 C, 120 C, 130 C, 140 C and 150 C to assess the performance and emissions characteristics of the engine. It is observed that the diesel fumigation has made the huge impact on NOx and smoke formation. The emission of NOx and smoke were decreased simultaneously about 10% and 16% compared to the compression ignition engine. Moreover, this engine has produced high amount of CO and HC emissions at low fumigation temperature and also reduced the high fumigation temperature. The suction air temperatures of 120ï‚°C and 130ï‚°C operated under HCCI engine were found to produce lesser NOx and smoke emissions. Moreover, the engine fuel consumption was increased due to the low volumetric efficiency and also slightly affected the brake thermal efficiency.
Effect of Injection Pressure on Performance and Emission Characteristics HCCI Engines
Authors: Gowthaman S. , Balamurugan G.
Published: August 2020

Homogeneous Charged Compression Ignition engine (HCCI) is a suitable replacement of conventional diesel engines as it provides higher thermal efficiency and low oxides of emission (NOx) and particulate emissions. In HCCI engine, direct controlling of ignition timing is not possible. But it can be controlled by varying the engine parameters such as fuel injection pressure, inlet air temperature and exhaust gas recirculation. In this study, HCCI engine is controlled with changing the injection pressure of the fuel and analysed for the effect of injection pressure of the fuel for emission and performance of Karanja methyl ester fuel. The experiments were conducted on HCCI engine with fuel injection pressures of 2 bar, 3 bar, 4 bar and 5 bar and the optimum fuel injection pressure is found out. The results show that, the brake thermal efficiency is increased when the injection pressure is increased due to better atomisation and fuel penetration and also resulted in low emissions (NOx, smoke) compared with diesel engine.
Experimental and Numerical Study on Crashworthiness Parameters of Mild Steel Square Tube under Quasi-Static Axial Compression
Authors: Rushikesh Shinde , Kiran Mali , Kathiresan M. , Dhananjay Kulkarni
Published: August 2020

In the present research, an experimental and numerical study on the crush response of square tube is presented. The explicit Finite Element Analysis (FEA) in LS-DYNA software is carried out to simulate crash behaviour under the quasi-static test conditions. Compression load is applied quasi-statically in an experimental study on the square tube specimens using Universal Testing Machine (UTM). In quasi-static test the bottom platen speed used is 1 mm/min. From experimental testing symmetric collapse mode is observed in all deformed specimens. The development of the symmetric collapse mode in a Finite Element (FE) model is also observed. Thus fold formation and crush response predicted by FE analysis are observed to be in very good correlation with the results obtained from experimental testing. Furthermore, the effect of the thickness of tube on crashworthiness parameters is investigated. From the FE analysis, it is found that the thickness of the square tube influences significantly the crashworthiness parameters.
Analysis of Power Regenerative Shock Absorber in Passenger Car
Authors: Manimaran R. , Venkatesan M. , Hari Shankar V. , Murugu Mohan Kumar K.
Published: August 2020

In this analysis, the modelling of a regenerative shock absorber in passenger car suspension system has been studied. The purpose of the conventional shock absorber in a vehicleâ€™s suspension system is to reduce the vibration by dissipating the energy stored in the spring as heat to the surroundings. To recover the wasted energy from damper into electrical energy an inventive regenerative shock absorber is simulated. A mechanical motion rectifier is used to convert the suspension displacement into uni-directional rotation of the generator. A quarter car Simulink model of the power regenerated shock absorber was developed and simulated in order to evaluate the amount of the power regenerated. The dynamic performance of shock absorber is integrated into suspension system where the graphs are plotted with the parameter of road profile and vehicle speed. The mathematical model achieved an overall efficiency of 60% with the average of 40 watts.
Linear and Non-Linear Stability Analysis of a Constrained Railway Wheelaxle
Authors: Sharma Rakesh Chandmal , Avesh Mohd , Sharma Sunil Kumar , Sharma Sakshi , Palli Srihari , Sharma Neeraj
Published: August 2020

Railway wheel axle experiences the problem of hunting above a critical velocity, which is a kind of self-excited oscillation. This paper investigates the linear and non-linear stability analysis of wheel axle constrained within a fixed bogie frame. From the linear analysis the critical velocity of the system with the existing parameters is found to be 268 km/hr. The influence of different parameters on stability of the system is further investigated in present study. Nonlinear analysis provides additional information compared with linear systems. Nonlinear analysis provides several stable solutions with a single set of parameters and each stable solution is function of the initial conditions. Using domains for initial conditions i.e. domains for attraction, chances for existence for stable solutions is determined. Present nonlinear analysis indicates that for vehicle velocity range from the critical velocity 366 km/hr to 392 km/hr, two stable solutions coexist i.e. the trivial solution with limit cycle solution and for the range of velocities beyond 392 km/hr one stable solution exist.
Vehicle Motion Stability Enhancement Based on Active Camber Angle Control for a Double Wishbone Suspension
Authors: El-Zomor H.M. , Mmohamed Eid S.
Published: August 2020

This work studies the combination of the active camber angle actuator with a double wishbone suspension to guarantee vehicle stability enhancement. The effect of camber angle on vehicle stability and manoeuvrability parameters are monitored in order to estimate the optimal values of camber angle for left and right wheels under single-lane change manoeuvring test. The proposed system is simulated based on the full car simulation package ADAMS/Car in connection with MATLAB/Simulink. The simulated result looks promising as the camber angle control can dominate the motion at various yaw rate, side slip and lateral acceleration during a vehicle manoeuvring test. A quarter-car double wishbone suspension prototype has been built with the proposed active camber angle system. The effect of the tire load on the camber angle is evaluated; the actuator effectively works to the optimal value of camber angle in order to enhance vehicle stability.
Design and Drag Analysis of Fixed Wing Unmanned Aerial Vehicle for High Lift
Authors: Deulgaonkar Vikas , Patil Malhar , Patwardhan Vaidehi
Published: August 2020

Present work deals with design and analysis of fixed wing aircraft model. Dimensions of aircraft are evaluated considering different factors as weight to be lifted, velocity of aircraft and cruising altitude. Using AIAA rulebook the dimensions of aircraft are fixed. Further the theoretical analysis has been carried out using classical equations for evaluating drag co-efficient with respect to angle of attack and lift co-efficient. The airfoil selection has been carried out by comparing the characteristics of co-efficient of lift, drag and their behaviour against angle of attack for a range of 1ï‚° to 10ï‚°. Using the theoretical outcomes the behaviour of entire aircraft was observed. Simulation of the aircraft has been carried out using XFLR5 software. The theoretical and simulation outcomes are observed to follow similar pattern for co-efficient of drag against both angle of attack and lift co-efficient. Close correlation has been observed between theoretical and simulation results. Present paper presents a design and analysis validation process for aircrafts used in surveillance applications.
Investigations of Micro-Milling Parameters in Woven Banana Fibre Reinforced Polymer Composite Filled with Rice Bran Particles
Authors: Dinakarraj C.K. , Sivasankar J. , Senthilkumar N.
Published: August 2020

In modern day of manufacturing, micromachining plays a key function in machining of new developed harder materials, which is an alternate machining procedure for many processes in industrial scenario. The core objective of this current effort is to progress a micromachining setup and to examine effects of micromachining parameters, for which an open source small Arduino CNC machine was developed for performing the micro-milling operation on a natural fibre (banana) and rice bran particles reinforced polymer matrix composite material with fiber resin combination of 1:3. By using Taguchi method experiments combinations were formulated considering speed, feed and depth of cut and the outputs of MRR and surface roughness were investigated using TOPSIS methodology for identifying the optimal parametric conditions. Analysis of variance is employed for identifying the most significant parameter and a validation experiment was performed with the identified optimum conditions.
Optimization of Parameters of Dissimilar Gas Tungsten Arc Welding using Grey Relational Analysis
Authors: Kumar A. , Mukherjee S. , Agrawal S.
Published: August 2020

This paper is aimed to study in detail about dissimilar welding of aluminium alloy (AA 1100) with mild steel (MS) of thicknesses 3.0mm and 2.0mm respectively. This paper also gives emphasis on the multi-objective optimization by using grey relational analysis (GRA) for samples welded with gas tungsten arc welding (GTAW). The welding input parameters are crucial in obtaining the desired weld quality. The experiments have been performed according to the L-8 orthogonal array.The input parameters chosen are the pulsed DC parameters such as pulsed current, base current, pulse on time percentage and frequency. The weld quality determining parameters are the ultimate tensile strength and rockwell hardness number. Grey relational analysis is used to obtain the optimum values of the input parameters for the optimum weld quality.
Eco-Friendly Reinforced Composites Made from Tamarindus Indica with Epoxy and Bisphenol Resin
Authors: Manikandan G. , Jaiganesh V. , Ravi Raja Malarvannan R. , Vinothkumar M.
Published: August 2020

For future generation, to keep the world green, the cognizance on natural fiber increases. The natural fiber-reinforced composites have an advantage of being lightweight, renewable, biodegradable, and cheap, eco-friendly. So there is a need to investigate the potential of natural fibers and their composites, which can be used in highly demanding situations. An attempt has been made in present work to explore the possible use of a variety of wild grown fibers in nature in the development of new composites for load carrying structures. This article is detailed about the extraction process of natural fibers and characterization of natural fiber-reinforced composites. The reinforced composites made by the use of Tamarindus Indica (Tamarind) fibers with epoxy and bisphenol resin. The experimental investigations of the natural fiber composites were carried out by means of Scanning Electron Microscope and the mechanical properties such as tensile, flexural, compression and hardness properties of the composites without chemically treated fibers were reported.
Investigation on Mechanical Characteristics of Luffa Natural Fiber Reinforced Polymer Composite Materials
Authors: Krishnamurthy C. , Chandran V. , Dhanasekar S.
Published: August 2020

Natural fibers are emerging as a better component than synthetic fibers in many occasions such as in automotive and several other products. There major advantages are low cost, biodegradability, lower density and abundant in nature. Many natural fibers are extracted from agricultural waste and plants. These fibers are bonded together with help of polymer matrix. Mostly synthetic polymers are used because of its high adhesion characteristics. These fibers are processed in mercerization technique to reduce moisture absorption characteristic and waxy layer on the fiber. this work is based on developing a new set of NFRP consisting of luffa, almond and ground nut and determining the best volume fraction for better reinforcement. The composites are fabricated by hand layup technique and their mechanical characteristic for five different volume fractions are evaluated by simple testing methods such as hardness, impact, tensile, density, moisture absorption test.
Comparison of Experimental and Numerical Study on Superplastic Forming of Rectangular Box Shape using AZ31 Magnesium Alloy Sheet
Authors: Prabaharan G. , Ramesh Babu S. , Parthasarathy K. , Rajkumar K.A.
Published: August 2020

Super plastic forming has become a feasible process in manufacturing aircraft and automobile parts. Super-plasticity is a property of certain metallic materials which enable them to attain very high elongations (100% and above) without necking under certain conditions. This is assigned to the viscous behaviour exhibited by certain metals and alloys with very fine and stable grain structure at temperatures above half of the melting point. The experimental setup was developed for finding the parametric influences and their effects on super plastic forming. AZ31 Magnesium alloy is most suitable materials for producing more complex shapes using super plastic forming method. The experimental values of pressure, temperature and the thinning, dome height of the super plastically formed specimens were analysed.
Analysis of Quality Parameters in Drilling of Titanium Alloy
Authors: Singaravel B. , Saikrupa Ch. , Sandeep M.
Published: August 2020

Drilling is a complex manufacturing process used for producing hole on engineering materials. Hole produced and followed by its quality parameters such as surface roughness and circularity to declare its quality. In this work, drilling process is carried out on titanium alloy using carbide drill. The input parameters considered in the work include cutting speed and feed rate and the output parameters include are surface roughness, circularity and diameter error. Three set of drilling process parameters are used to carry out experiments and the output parameters are measured by surface roughness tester and coordinate measuring machine. The result concluded that the feed rate and followed by cutting speed influencing the surface roughness, low circularity error is observed with higher cutting speed due to dynamic stability and also at higher cutting speed lower hole diameter error is observed due to reduced interfacial friction. This quality parameter analysis is used for increasing assembly accuracy of drilled hole.
A Critical Review of Seating Discomfort and Anthropometric Consideration for Tractors
Authors: Boopathi M. , Balachandran S.
Published: August 2020

The seats that are available in the tractors are not as sophisticated as in the cars and most of the tractor operators feels discomfort while operating the tractor. This review not only makes the tractor seat sophisticated one but also includes all other design considerations. It is necessary to design a seat by considering various factors like dimensions, cushioning, anthropometry etc. Anthropometric consideration is not a mere assumption here. In the view of anthropometry, a survey form was created to analyse various pain levels of a tractor operators. The survey was taken from different age and different experience tractor operators to obtain more relevant data for the analysis. At the end of analysis, the dimensions were varied according to the analysis and also consider the ISO and BIS recommendations. To give more comfort to the tractor operators some additional features like hand rest, air cushioning for the seat were added and these also reduce the tractor operatorâ€™s pain.
Affect, Spatial Practices, and the City in Agatha Christie's "They Came to Baghdad"
Authors: TÜRE ABACI Özlem
Published: August 2020

They Came to Baghdad (1951), one of Agatha Christie’s
mid-career books, could be categorized as a political thriller that unravels
the ideological conflicts during the early Cold War period and the fight over
Iraqi oil reserves. The scenes of the novel, like an adventure movie alters
from a spy hunt to an archaeological theme, then to a romance, and finally a
murder story and a thriller, in which fear comes up unexpectedly. Particularly,
the setting provides the grounds for the female protagonist of the novel,
Victoria Jones, to cross cultural and social boundaries and explore the space
as a naïve pseudo-spy working for the international forces in Baghdad. By the
lens of Nigel Thrift’s concept of “affective cities” and “spatialities of feeling,” this paper aims to explore how the setting of
the novel—Baghdad—creates an intensive field of conflicting cultural and social
forces that inscribe the female body, which runs in parallel with the narrative
tactics Christie uses in revealing the affective emplacements of fear,
suspicion, increasing levels of anxiety and insecurity in the cityscape. This
paper, in other words, offers a spatial analysis of the novel in order to
explore how the cityscape is mobilized and altered by the shifting perceptions
of it by Victoria Jones while she defies the patriarchal demarcations of space.
Through her adventures, it becomes possible to comprehend how power is
distributed and circulated within this Middle Eastern society.
Dependence Structure between Conventional and Islamic Indexes: A Copula Approach
Authors: Messaoud Samia Ben , Kouki Mondher
Published: August 2020

This article examines the conditional dependence structure between Islamic stock indexes and conventional counterparts. Our empirical analysis relies on Islamic and conventional indexes of dependence distribution using copula methods over the period 1999–2014. The results from the copula models denote that the dependence is not formally symmetric in that the lower tail dependence is significantly larger than the upper tail dependence.
C-arm Guided Minimally Invasive Percutaneous Fixation Technique of Mandibular Angle and Ramus Fractures - a Prospective Clinical Study at a Tertiary Care Center of Odisha, India.
Authors: Rout Sourav Kumar , Jena Subrat Kumar
Published: August 2020

Background: Rigid internal fixation of displaced mandibular angle and ramus fractures often poses a unique challenge to oral and maxillofacial surgeons. Various methods have been published to provide a safe and secure gateway for these circumstances. Intra-oral approach supplemented by a limited percutaneous method of fixation offers a distinct advantage of rigid fixation, reducing the known morbidity of using the sole internal as well as external techniques. The objective was to describe a minimally invasive technique for the mandibular angle and ramus fractures using the combined intraoral and extra-oral approach.Methods: This study was conducted on ten patients with mandibular angle or ramus fractures. All patients underwent open reduction and internal fixation. The intra-oral incision was used for visualization and reduction of fractures, and supplemental percutaneous stab incision was utilized to create a path for insertion of the handheld battery-operated microdrill shaft and screwdriver to permit screws fixation perpendicular to the plates.Results: This combined technique depicted minimal or no soft tissue infections, wound dehiscence, occlusal disturbances, or seventh cranial nerve paralysis. The mean surgical duration was 41.5 minutes. No patient had an visible scar marks, which would require further intervention.Conclusion: The described minimally invasive combined percutaneous and intraoral approach for mandibular angle, and ramus fracture provides a satisfactory alternative which could be safely applied to provide rigid fixation of these fractures with minimal damage to vital structures.
SWOT ANALYSIS IN AN EDUCATIONAL INSTITUTION (Case Study: Baitul Qur'an Islamic Boarding School, Depok)
Authors: Aisyi Gina Rohadatul , Zulkarnain Lutfi
Published: August 2020

The development of the educational institution industry continues to increase, which demands an effective marketing strategy to face the increasingly tight competition in the education service business. This research is a qualitative research methodology with a descriptive approach that aims to determine the marketing strategy of Baitul Qur'an educational institutions. The analysis tool used is the analysis of the company's environment (EFE, IFE, and IE Matrix) with the SWOT method (Strength, Weakness, Opportunity, Threat). The results of the Baitul Qur'an Islamic Boarding School evaluation based on Internal and External analysis obtained from the SWOT analysis resulted in an alternative strategy of S-O (Strength-Opportunity). Then, the results of the SWOT analysis are reprocessed using the QSPM (quantitative strategic planning matrix) method to obtain priority strategies from various alternative strategies as well as a decision to choose a strategy. The priority strategy in this study is to optimize the use of digital marketing and other marketing technologies to support the development of Islamic boarding schools in a wider area (6,87).
THE EFFECT OF RELIGIOSITY, BRAND IMAGE AND WORD OF MOUTH ON CUSTOMER'S DECISION TO APPLY FOR INSURANCE PT PRUDENTIAL UNIT SYARIAH
Authors: Ummi Neng Auliya Rohimatul , Nurhasanah Nining , Setiawan Donny
Published: August 2020

This study aims to analyze the effect simultaneously and partially between the variables of Religiosity, Brand Image, and Word of Mouth on the customer decision process in applying for prudential sharia insurance. This research is quantitative. The data used are primary data by distributing questionnaires to 100 respondents and secondary data obtained by conducting a literature study. Sampling was done by using a quantitative purposive sampling technique. The data analysis method uses multiple linear regression. The results of this study indicate that there is a simultaneous influence on the variable Religiosity, Brand Image, and Word of Mouth on the customer decision process. The results of this study also indicate partially that Religiosity, Brand Image, and Word of Mouth significantly influence customer decision processes. The results of the determination show that the customer decision process can be explained by the variable Religiosity, Brand Image, and Word of Mouth by 31.1%. This means that there is a 68.9% (100% -31.1%) variance of the dependent variable explained by other factors not included in this study.
Infancia en movimiento
Authors: Krochik Gabriela
Published: August 2020

“El cuerpo humano está diseñado para estar en movimiento. Como profesionales de la salud debemos promover un estilo de vida más activo en nuestros pacientes”, menciona el Comité de Graduados de la Sociedad Argentina de Diabetes (SAD), en esta edición dedicada a la actividad física. Si de promoción de salud se trata, somos los pediatras, al intervenir en etapas tempranas de la vida, quienes más debemos comprometernos.
BIENVENIDOS A LAS IX JORNADAS NACIONALES DE DIABETES
Authors: Fuente Graciela
Published: August 2020

Las IX Jornadas Nacionales de Diabetes se iniciaron hace 16 años con el objetivo de una reunión para los socios de la SAD con espíritu federal y que se realiza en distintos puntos del interior del país; ha evolucionado a lo largo de este fecundo período y mantiene el deseo del encuentro con colegas y amigos de tantos años, en un marco de camaradería y elevado nivel científico.
NEUROPATÍA AUTONÓMICA CARDÍACA
Authors: Urdaneta Raquel
Published: August 2020

La neuropatía autonómica cardíaca (NAC) es una complicación microvascular frecuente y de apari- ción temprana de la diabetes mellitus (DM) que implica un incremento del riesgo cardiovascular, con aumento de la mortalidad.
DETERIORO COGNITIVO
Authors: Alvarez Adriana
Published: August 2020

El aumento de la expectativa de vida ha determinado un incremento tanto en la prevalencia de diabetes mellitus tipo 2 (DM2) como de deterioro cognitivo y demencia.
NEFROPATÍA
Authors: Elbert Alicia
Published: August 2020

La nefropatía por diabetes aún es un enorme desafío para la salud dado que a pesar del enorme avance en los tratamientos su incidencia continúa en aumento en nuestro país y su presencia constituye además un factor de riesgo de desarrollo de morbimortalidad cardiovascular.
PÁNCREAS ARTIFICIAL: ALGORITMO EN DIABETES MELLITUS TIPO 1
Authors: Cherniavsky Daniel
Published: August 2020

Avances realizados en el área de la investigación clínica en el uso del páncreas artificial para el tratamiento de la diabetes mellitus tipo 1 (DM1), así como su uso clínico y futuras aplicaciones en la DM2.
TRATAMIENTO DE LA OBESIDAD EN DIABETES MELLITUS TIPO 1
Authors: Musso Carla
Published: August 2020

El aumento de la prevalencia de obesidad en diabetes mellitus tipo 1 (DM1) es alarmante y se asocia a insulinorresistencia semejante a lo observado en DM2, lo cual generó considerarla “diabetes doble”. Actualmente el 50% de los pacientes con DM1 tiene sobrepeso u obesidad. También la asociación con obesidad ha generado el desarrollo de dislipemia y complicaciones macrovasculares. Las comorbilidades asociadas a la obesidad reducen los bene cios del buen control metabólico, razón por la cual es importante el objetivo del normopeso. El estado proinflamatorio crónico y sostenido de la obesidad se asocia con enfermedad cardiovascular.
PROBLEMÁTICAS EN EL TRATAMIENTO DE LA DIABETES MELLITUS TIPO 1 EN PEDIATRÍA
Authors: Mazza Carmen
Published: August 2020

El manejo de la diabetes mellitus tipo 1 (DM1) en niños y adolescentes es un complejo proceso de autorregulación que incluye múltiples conductas. Cuando las conductas de autocuidado se implementan de manera efectiva impactan positivamente en el control metabólico y en la calidad de vida de los pacientes y la familia.
EDUCACIÓN Y COMUNICACIÓN
Authors: Carreño Nancy
Published: August 2020

Internet y las redes sociales han causado cambios profundos en la sociedad, la ciencia y la Medicina. El uso de las redes es frecuente en todas las edades y profesiones, y generalizado en todo el mundo. La palabra “diabetes” arroja cerca de 395,000,000 de resultados 1.59 en Google. En un minuto de Internet se producen en Google 3,8 M de búsquedas, 1 M logueos en Facebook, 87.5000 twitts y 46.200 pos- teos en Instagram. Argentina tiene 35 M de usuarios en Internet y 34 M en redes. En 2019 los usuarios de Facebook suman 20 M, es decir casi la mitad de la población.
DIABETES MELLITUS EN PEDIATRÍA
Authors: Ferraro Mabel
Published: August 2020

Los estudios de incidencia de diabetes mellitus tipo 1 (DM1) en Pediatría son de importancia para realizar un diagnóstico de la situación epidemiológica y posibilitar la elaboración de políticas sanitarias eficientes. La variación geográfica en incidencia refleja un grado diferente de susceptibilidad a la diabetes entre poblaciones. Aunque la susceptibilidad genética es necesaria para el desarrollo de la DM1, su etiología es multifactorial.Se ha descripto un aumento sostenido de la incidencia en poblaciones y en algunos grupos etarios, en ocasiones con características distintas en diferentes informes.
Educación terapéutica de mujeres con diabetes gestacional (edugest): datos correspondientes al período de reclutamiento
Authors: Gorbán de Lapertosa Silvia , Alvariñas Jorge , Elgart Jorge F. , Salzberg Susana , Gagliardino Juan J.
Published: August 2020

Introducción: la prevalencia de diabetes gestacional (DG) en Argentina es de 4,7%, lo que implica mayor riesgo de desarrollar complicaciones tanto maternas como del recién nacido, prevenibles mediante un diagnóstico precoz y un tratamiento oportuno.
Objetivos: promover la consulta precoz, el diagnóstico oportuno y el tratamiento adecuado mediante un programa de educación estructurado y multidisciplinario a nivel de Centros de Atención Primaria de la Salud (CAPs) y maternidades.
Materiales y métodos: se reclutaron embarazadas con DG en CAPs y maternidades de Buenos Aires, Corrientes, Chaco y Ciudad Autónoma de Buenos Aires (CABA), con la participación de obstetras, diabetólogos, enfermeras, asistentes sociales, educadores, nutricionistas y médicos comunitarios. Para el diagnóstico de DG se aplicaron los criterios de la Asociación Latinoamérica de Diabetes (ALAD) y se relevaron simultáneamente hábitos nutricionales y parámetros clínicos, metabólicos y terapéuticos. También se desarrollaron cursos de educación y seguimiento durante el embarazo, parto, postparto y lactancia.
Resultados: las embarazadas con DG consultaron tardíamente (la mayoría en el tercer trimestre de embarazo) y presentaron factores de riesgo para DG no prevenibles (el más frecuente fue el antecedente familiar de diabetes) y prevenibles (obesidad, hipertrigliceridemia y macrosomía) en embarazos previos.
Conclusiones: el EduGest pretende interrumpir el círculo vicioso generado por la DG sobre la futura diabetes mellitus tipo 2 en la madre y el niño al promover la adopción de hábitos saludables.
INCIDENCIA DE DIABETES MELLITUS TIPO 1 EN PERSONAS MENORES DE 15 AÑOS, ENTRE LOS AÑOS 2009 Y 2016, EN LA PROVINCIA DE CORRIENTES
Authors: López Claudio Esteban , Gorbán de Lapertosa Silvia , Pomares Laura , González Claudio Daniel
Published: August 2020

Introducción: la incidencia de diabetes mellitus tipo 1 (DM1) aumentó en los últimos años en varias regiones del mundo. Los Estudios Diabetes Mondiale (DiaMond), Europa y Diabetes (EURODIAB) fueron fundamentales para monitorizar el desarrollo de incidencia de DM1 en niños al propiciar pruebas sobre tendencias y prevalencia mundiales. En el Estudio DiaMond, en la provincia de Corrientes, se halló una incidencia de 4,3/100.000 (2,21-7,51) entre los años 1990 a 1999.Objetivos: determinar la incidencia de DM1 en niños <15 años en la provincia de Corrientes entre el 1º de enero de 2009 y el 31 de diciembre de 2016, según edad, sexo y residencia; comparar con el período 1990-1999; calcular la tasa de incidencia 2009-2016; analizar la presencia de factores de riesgo económicos, psicosociales y ambientales.
An Aetiopathological Study on Epistaxis in Adults and its Management
Authors: Manickam Ajay , Ghosh Debangshu , Saha Jayanta , Basu Sumit Kumar
Published: August 2020

IntroductionEpistaxis is a common clinical problem in ENT practice. Idiopathic aetiology is said to be the most common.Aim of studyTo find out whether idiopathic epistaxis is the most common cause of primary adulthood epistaxis and to formulate the best treatment protocolMaterials & MethodsA prospective study was conducted in a tertiary healthcare setup from August 2013 to August 2014. 100 patients of more than 16 years of age of both sexes were studied. Patients presenting with active nasal bleeding in ENT ER and OPD were included.ResultsTruly idiopathic epistaxis was encountered in 37% of the study population followed by 20% cases in association with grossly deviated septum with septal spur(s). Most of the cases were managed by resuscitation alone with or without anterior nasal packing. Conclusion: With advances in endoscopy & imaging techniques, cause of the epistaxis can most often be elicited and by sticking to a management protocol recurrence can be reduced.
A Few Unusual Cases of Benign Laryngeal Lesions - Our Experience
Authors: Halder Sebananda , Ghosh Debangshu , Saha Jayanta , Basu Sumit Kumar
Published: August 2020

Introduction: Benign laryngeal lesions may have some uncommon presentations. 

Aims: The aim was to identify unusual benign vocal cord lesions and review their management and follow up. 

Material and methods: The records of the patients presenting with different benign vocal cord lesions were reviewed retrospectively. Confirmed cases of vocal cord paralysis and malignancy were excluded from the study. Nine cases were imcluded in this study. Clinical findings, investigation reports, treatment and outcome were analysed. 

Results: Most of the patients were from 18 years to 52 years (66%). Most common presenting feature was hoarseness of voice (89%) followed by respiratory distress (33%) . Microlaryngeal surgeries were done in 7 patients (78%) and 2 patients (22%) were  managed conservatively. 

Conclusion: Diagnosis of benign vocal cord lesions may sometimes be difficult. Careful history, attention to the anatomy and the probable variations in presentation of the benign lesions of larynx, thorough clinical examination and different diagnostic tools are essential for satisfactory management.
A Complicated Case of Foreign Body Oesophagus in an Infant
Authors: Verma Arvind Kumar , Guha Ruma , Das Chiranjib , Bandopadhyay Saumendra Nath
Published: August 2020

Ingestion of foreign bodies is common primarily in children, psychiatric patients, alcoholics and elderly people who use dentures. Selivanov et al. reported that, in most cases of foreign body ingestion, the most common foreign bodies ingested were coins, bones, food debris, safety pins and razor blades. Rarity, technical difficulty in removing the foreign body, complications associated with the delay in diagnosis and treatment, migration of the foreign body extraluminally, site, shape and position of the sharp end of a safety pin makes this case  interesting and worth reporting. We are reporting a case of a one year child presenting to us with accidental ingestion of a safety pin. The case was difficult because the protected end of the safety pin was broken which made both the ends of the foreign body sharp. Also, the ends of safety pin were wide apart and pointing upwards.
Negotiating the Learning Curve in Endoscopic Skull Base Surgery: A Local ENT Perspective
Authors: Raychowdhury Ranjan , Chaterjee Sandip
Published: August 2020

IntroductionSkull base surgery, although recognised as an interdisciplinary specialty involving both Neurosurgery and Otolaryngology in the West, has been the domain of the Neurosurgeon in West Bengal. Several superspecialty healthcare facilities in the state are now actively promoting endoscopic skull base surgery.

Structured trainingThe Pittsburgh group has published a systematic training programme for skull base surgery.

Paradigm shiftFollowing the work of several groups, most notably the Pittsburgh group in the USA, a paradigm shift from open to endoscopic anterior skull base surgery has occurred.

Learning curveThis paper discusses how the ENT surgeon may negotiate the learning curve in endoscopic skull base surgery in the context of the local resources available.
Three Years’ Experience of Management of Different Types of Rhinosporidiosis in Rural Part of Western West Bengal
Authors: Chakraborty Debdulal , Das Chiranjib , Hansda Rajesh
Published: August 2020

Introduction: The incidence of different types of rhinosporidiosis is very high in the rural western part of West Bengal.  The treatment of choice is surgical excision and cauterization of the base. The recurrence rate is very high.

Aims and objectives: The objectives of this study were to assess the distribution of rhinosporidiosis according to age, sex, presenting features, site of origin, recurrence rate and compare them with literature; and describe the surgical technique to reduce recurrence of the disease.

Materials and methods: This prospective case study was done in the department of Otorhinolaryngology in a tertiary care hospital in the western part of West Bengal from April 2012 to March 2015. Wide local excision of rhinosporidiosis along with electrocautery of the base was done. We took the help of endoscope and microscope whenever needed. Regular follow up with endoscope was done in postoperative period.

Results: Out of total 112 patients 62 were male and 50 were female. Commonest age group affected was 2nd decade. There was no recurrence in patients undergoing operation for the first time. Recurrence was noted in nasopharynx of 3 patients undergoing revision surgery.

Conclusion: Complete removal of rhinosporidiosis from the base is the basic criterion to reduce recurrence. It is possible by using meticulous technique along with the guidance of endoscope or microscope whenever needed. Regular postoperative follow up with endoscope is must to detect and treat early recurrence.
Acetic Acid Instillation after Canal Wall Down Mastoidectomy
Authors: Shetty Hamsa , K S Gangadhara
Published: August 2020

Introduction:

Persistent otorrhoea and granulation tissue in the mastoid cavity are common post-operative complications of Canal Wall Down Mastoidectomy. In order to avoid the same and to achieve a dry cavity instillation of acetic acid into the mastoid cavity during the post operative period is common practice.

Materials and Methods

In this study we assessed the results of 4% acetic acid instillation in varying quantity and frequency, in the ears after modified radical mastoidectomy.

40 Patients of chronic suppurative otitis media (atticoantral) / cholesteatoma, who underwent modified radical mastoidectomy during one and a half year period, were included in the study. The patients were divided into two groups; Group A with 30 patients and Group B with 10 patients, by simple randomization method. Group A patients were asked to instill 4% acetic acid approximately 10 to 12 drops (generously) into the mastoid cavity thrice a day for  8 weeks and were followed up every week.  10 patients  of Group B were asked to instill the same preparation only once weekly and followed up for the next 12 weeks.  

Results:

In Group A, dry mastoid cavity was achieved remarkably faster within six to eight weeks and in all the 30 patients. In Group B the results were delayed by up to 4 to 6 weeks in comparison to the Group A patients.

Conclusion:

            Though acetic acid instillation is known to help in achieving a dry cavity but a slightly higher concentration (4% acetic acid) used more frequently is highly effective in rendering dry cavity much earlier without proliferation of granulation tissue.
OSSICULAR STATUS IN CHOLESTEATOMA : A DEPARTMENTAL EXPERIENCE IN A STATE MEDICAL COLLEGE OF WESTBENGAL.
Authors: Mozumder Somesh , Sengupta Arunabha , Mondal Alok Ranjan , Basu Soumik
Published: August 2020

Introduction: Chronic otitis media is a long standing infection of part or whole of middle ear cleft. Its active squamosal variant (cholesteatoma) is most dangerous due to its bone eroding property.

Aims & Objective: Background knowledge of ossicular status in cholesteatoma  will help us in determining the type  of reconstruction needed during the surgery.

Material & methods: 60 cases of cholesteama, irrespective of age and sex [diagnosed on the basis of clinical examination , audiological and radiological evaluation] were selected during the study period of two years and their ossicular status were recorded intra-operatively.

Results &  analysis: Ossicles and their parts getting involved in cholesteatoma cases , in decreasing order are :

Lenticular process (in total 50 cases)>Long process of incus (in total 49 cases) > stapes super-structure(in total 29 cases) > body of incus(in total 26 cases)> head of malleus(in total 23 cases)> handle of malleus(in total 10 cases).

Ossicular chain  defeact in decreasing order are : M-I-S- > M+I-S- > M-I-S+ > M+I-S+.

Conclusion: In our study it was found that incus is the most vulnerable ossicle to get involved in cases of active squamosal variety of chronic otitis media where as malleus appeared to be the least susceptible one.
A RARE CASE OF A GIANT HEMANGIOENDOTHELIOMA OF NECK
Authors: Banerjee Swagatam , Chakravarty Sharmistha , Sarkar Saurav , Bera Sankar Prasad
Published: August 2020

Introduction

Hemangioendothelioma is a rare variety of vascular soft tissue neoplasm, classified as a borderline tumour with diverse modality of clinical presentation. It is seen mostly at sites like the liver, lungs and bones while very few head and neck cases have been reported.                         

Case Report

A rare case of an unusually large tumour mass presenting as an anterolateral neck mass with extensions to right parapharyngeal space, posterior triangle and prevertebral space is presented here. The entire tumour was removed en-masse surgically. Histopathological examination confirmed the mass to be an epitheloid hemangioendothelioma, the enormous size of which in the neck makes it unique and unusual.