bluuebunny/crossref_metadata_2025_split huggingface dataset:
Gangguan Mutisme Selektif Anak di Taman Kanak-kanak
Authors: Masholeh Ahmad Tibyanul , Erniawati Tri 
Published: June 2020

Abstract: The purpose of this study is (1) to describe the general picture of Selective Mutism disorders in research subjects, (2) to describe the factors causing the subject to experience Selective Mutism disorders, (3) to describe the efforts made by teachers and parents to deal with subjects with Selective Mutism disorders. . This study uses a qualitative description. The analysis used in this study came from the interactive model of analysis by Hubberman and Milles. Data collection is done by observation, interview and documentation techniques. Based on the results of the study it was found that children experience Selective Mutism disorders. Children tend to be quiet when at school, while at home children are more active. The teacher's way of dealing with children who have Selective Mutism disorders is by doing an interactive approach to children. Parents also often have to introduce children to the new environment. Abstrak: Tujuan penelitian ini adalah (1) mendeskripsikan gambaran umum tentang gangguan Mutisme Selektif pada subjek penelitian, (2) mendeskripsikan faktor-faktor penyebab subjek mengalami gangguan Mutisme Selektif, (3) mendeskripsikan upaya yang dilakukan guru dan orang tua untuk mengatasi subjek dengan gangguan Mutisme Selektif. Penelitian ini menggunakan deskripsi kualitatif. Analisis yang digunakan dalam penelitian ini berasal dari model interaktif analisis Hubberman dan Milles. Pengumpulan data dilakukan dengan teknik observasi, wawancara dan dokumentasi. Berdasarkan hasil penelitian ditemukan bahwa anak mengalami gangguan Mutisme Selektif. Anak cenderung diam ketika di sekolah, sedangkan di rumah anak lebih aktif. Cara guru untuk mengatasi anak yang memiliki gangguan Mutisme Selektif adalah dengan cara melakukan pendekatan secara interaktif kepada anak. Orang tua juga harus sering mengenalkan anak dengan lingkungan baru.
Effect of single dose dexmedetomidine given prior to extubation on extubation conditions in adult patients following general anaesthesia
Authors: Suresh Sneha , Rajan Sunil , Varghese Rekha , Kumar Lakshmi 
Published: June 2020

Extubation is usually associated with undesirable increase in hemodynamics. Dexmedetomidine has shown to provide smooth and hemodynamically stable emergence. Primary objective of the present study was to assess incidence of cough at extubation following single dose dexmedetomidine given prior to extubation. Secondary objectives included assessment of changes heart rate and blood pressure at extubation, post operative nausea, vomiting and shivering.This randomized control study was conducted in 40 ASA I-II patients with 20 in each group. Group A received 0.75mcg/kg dexmedetomidine and group B received normal saline, 30min prior to end of surgery as an infusion over 10min. Cough scores were recorded at the end of extubation. Students T test and Chi square test were used as applicable for statistical analysis.: Incidence of cough at extubation was comparable in both groups (66.7% vs. 63.6%, p 1.00). Baseline mean arterial pressure was comparable in both groups, but at 3min after extubation it was significantly lower in Group A. Heart rate, postoperative nausea, vomiting, shivering and sedation scores did not show any significant difference between the two groups (p&#62;0.05): An infusion of dexmedetomidine at 0.75mcg/kg prior to extubation did not affect the severity of cough but resulted in improved hemodynamics after extubation.
Evaluation of current anaesthesia practice by assessing awareness during anaesthesia: A prospective observational study at a tertiary care teaching hospital
Authors: P Pathak Bhumika , N Khara Birva , D Ganjiwale Jayshree 
Published: June 2020

Intraoperative awareness is an uncommon but extremely unfavourable occurrence affecting patients who undergo surgery under general anaesthesia. The temporary effects of awareness in some patients may be sleep disturbances, nightmares and anxiety. At times, the patients may remain fearful regarding the occurrence of awareness under anaesthesia if in future they require it. The long term effects may range from post-traumatic stress disorder to a preoccupation with death. The objective of this study was to evaluate the occurrence of intra-operative awareness in the patients with our current anaesthesia technique.1000 participants were included in this observational study, who were posted for elective or emergency surgeries or procedures under general anaesthesia. Incidence of intra-operative awareness was assessed by Brice’s Questionnaire, modified and translated according to our study design. Patients’ interview reports were classified as (a) definite awareness (b) possible awareness (c) no awareness and (d) dreaming.Out of 1000 participants, 575 (57.5%) were males and 425 (42.5%) were females. In the present study, 780 (78.0%) had elective surgery while 220 (22.0%) had emergency surgery. No intra-operative complications were seen in 844 (84.4%) patients while hypotension was seen in 77 (7.7%) patients, bleeding was seen in 47 (4.7%) and hypoxia was seen in 25 (2.5%) patients. 997 (99.7%) patients didn’t have any form of awareness during anaesthesia while two (0.2%) patients had dreaming during anaesthesia and one patient confirmed hearing voices during surgery which was considered as possible awareness according to the definition.In our study, incidence of possible awareness was found to be 0.1%. Anaesthesia experience was satisfactory among 93.7% patients. Perioperative empathetic approach towards the patients reduces the anxiety, speculations regarding surgery and anaesthesia, and this helps in minimizing the incidence of awareness during anaesthesia.
Evaluation of the efficacy of proseal LMA versus endotracheal intubation for laparoscopic surgeries
Authors: M Keniya Varshali , Bhagwat Lawate Sheela , S Swami Sarita 
Published: June 2020

Open surgeries which were done predominantly in previous days are progressing to minimally invasive keyhole laparoscopic surgeries. In same way, airway management has been also progressed from ETT to lesser invasive Laryngeal Mask Airway (LMA). This was a prospective observational study which was conducted in patients who came for lower abdominal laparoscopic surgeries during study period of 3 year. All patients were divided into 2 groups with 30 patients in each group (group A- PLMA, group B - ETT). Age, weight, type of surgery, time required for insertion of device, hemodynamic monitoring, ventilatory parameters, postoperative complications in the form of laryngopharyngeal morbidity were recorded. : In total 60 patients, between the age group of 18-65 year were included which were divided into 2 groups with 30 patients in each group. PLMA required 15.13 seconds as compared to ETT which required 13.33 seconds for insertion of device. The sealing pressure for PLMA was measured by leak test and the average was 32.2 cmH2O. The mean heart rate, systolic BP, Diastolic BP and MAP at various interval was significantly higher in group B as compared to group A (P-value&#60;0.001 for all). The mean ± SD of ETCO2 among the cases studied in Group A and Group B was 36.53 ± 1.87% and 35.13 ± 2.51% respectively. Mean of Peak airway pressure (PAP) among the cases studied in PLMA (Group A) and ETT (Group B) was 22.53 mmHg and 18.97 mmHg respectively No complication or adverse event was noted during post-operative period in PLMA group but in Group ETT, 2 cases were found having blood staining of tube with sore throat in same 2 cases. PLMA is also proved to be an equally effective airway device in laparoscopic surgeries in the form of adequate oxygenation and ventilation. Also PLMA is associated with minimal intraoperative and postoperative complications. PLMA provided equally effective pulmonary ventilation despite of high airway pressures without significant gastric distension, aspiration and regurgitation.
Spinal anaesthesia for ambulatory urology surgery: A comparison of chloroprocaine with fentanyl and bupivacaine with fentanyl
Authors: Mansuri Taslim , Mathur Vijay , Kumar Goyal Vipin , Jethava Durga 
Published: June 2020

Spinal anesthesia is an attractive choice for ambulatory surgery of the lower abdomen and lower limbs but it requires a local anesthetic agent of short duration with minimal side effects. We compare the effect of intrathecal chloroprocaine with fentanyl to bupivacaine with fentanyl in ambulatory urology surgery. Hundred patients aged 18 – 60 years undergoing ambulatory urology surgery randomly divided into two groups of 50 each. Group A received 40 mg of 1% chloroprocaine with 20mcg fentanyl and group B received 7.5 mg of 0.5% bupivacaine and 20mcg fentanyl. Sensory and motor block characteristics, time to ambulation, void and time for ready to discharge from hospital were recorded. There was no difference in terms of demographic data and duration of surgery. Peak sensory block level was T5 in group A and T4 in group B. The mean time to reach the peak block level was similar in both groups (P=0.228). Time to two-segment regression and regression to the S2 segment were shorter in group A (P&#60;0.001). Regression of motor block was faster in group A, compared to group B (P&#60;0.001). The length of stay in PACU was similar in both the groups (P=0.729). Time to ambulation, time for first void and time for ready to discharge from hospital were significantly shorter in group A compared to group B (P &#60; 0.001).Chloroprocaine and fentanyl is a better choice for ambulatory urology surgery in comparison to low dose bupivacaine and fentanyl.
Comparison of intravenous granisetron and intravenous lignocaine to alleviate pain on propofol injection: A double blind, randomized, controlled trial
Authors: Suresh Priyanka , K Patil Shivakumar 
Published: June 2020

The objective of the study was to compare effectiveness of intravenous (IV) granisetron (2 milligram) with IV lignocaine (30 milligram) in allaying pain on propofol IV administration measured at 15 seconds after propofol administration. 100 patients of age 18-50 years belonging to American Society of Anesthesiologists (ASA) physical status grades I and II, chosen for elective surgery were randomized to two different groups (group L and group G) of 50 each. Patients of group L received IV lignocaine 30 mg and the other group G received IV granisetron 2 mg as pretreatment, before administration of propofol. Patients were assessed for pain after 15 seconds of IV administration of propofol with McCririck and Hunter scale. Both the pretreatments were found to prevent or decrease the pain on propofol administration. Pain assessed at the end of 15 seconds of propofol administration, showed that 76% in lignocaine group & 62%in granisetron group were not having any pain, 12% in lignocaine group and 20% in granisetron group had mild pain, and 12% in lignocaine group and 18% in granisetron group had moderate pain as assessed with McCririck and Hunter scale. There was no significant difference in the pain scores between the groups (χ2 = 2.310, P= 0.315). Both IV granisetron (2 mg) and IV lignocaine (30 mg) are equally effective in allaying pain on propofol injection.
Research and Application of Code Similarity Based on Submission
Authors: Lang Yu 
Published: June 2020

<p>With the continuous accumulation of resources, the similarity detection of code is becoming more difficult, and the difficulty of code reusing and rechecking is also increasing. In view of this problem, this paper proposes a code recommendation and check-research based on submission, which uses differential code cloning and word vector methods to find candidate code sets that are similar to incremental text, and uses feature extraction and clustering to select the most relevant codes from the candidate code sets to obtain repetitive codes. At the same time, it is recommended to programmers combined with relevance scores. Experimental results show that this method is feasible to some extent.</p>
Performance Evaluation of Active and Non-active Electrodes for Doxorubicin Electro-oxidation
Authors: de Souza Gil Eric , Moreno Emily , Ferreira Garcia Luane , Joaquin Linares León José 
Published: June 2020

Electrochemical remediation is an innovative technique that utilizes electro-oxidation reactions to degrade micropollutants such as doxorubicin (DOX) that is a drug widely used to treat many types of cancer, and it is present in hospital effluents. The aim of this work is to evaluate the efficiency of active and non-active electrodes in DOX degradation during electrochemical treatments. AuO-TiO2@graphite, a nanostructured electrode, and BDD, a commercial electrode, were used as active and non-active electrodes respectively. DOX treatments were realized at concentration of 1.25 mmol L-1 in medium with 10 mmol L-1 NaCl as support electrolyte. Studies were realized in 5 V of voltage source. Results: The treatment of DOX with BDD promoted 100% of DOX degradation in 20 min, while the same result was obtained for the AuO-TiO2@graphite in 40 min of treatment. Also, the modified electrode presented an energy expenditure of 1.12 kWh m-3 and the BDD achieved 0.462 kWh m-3. Thus, the active and non-active electrodes were efficient to promote DOX degradation, and the BDD, the non-active electrode demonstrated a better performance.
Keywords: Eletro-Oxidadion, Modified Graphite Anodes, BDD, Doxorubicin, Micropollutants
Analytical Model for the Performance Curves of a Family of Propellers Based on Wind Tunnel Tests
Authors: Cabeleira Dos Santos Miguel , Vieira Gamboa Pedro 
Published: June 2020

Propeller aircraft performance is greatly influenced by the performance of the propeller it uses. Thus, proper selection of a propeller for a given aircraft design at the early stages of the design process is fundamental. During the design of a new aircraft, simple yet accurate performance models are required to properly optimize the design. Significant experimental performance data of low speed, small propellers is available. The main objective of this work is to create and validate an analytical model for the performance curves of a family of propellers tested at low Reynolds numbers, which can be used in selecting a propeller for a given existing aircraft design or during its design optimization process. This kind of propellers is more commonly used in Unmanned Aerial Vehicles (UAVs). The model is designed in MATLAB® using a variety of regression techniques, such as the Least Squares Method (LSQ), applied to experimental data acquired at University of Illinois at Urbana-Champaign (UIUC), for seventeen APC Thin Electric propellers, and at the Department of Aerospace Sciences (DCA) of University of Beira Interior (UBI), for ten more APC Thin Electric propellers. The analytical model predicts propeller power coefficient and propulsive efficiency accurately for the family of propellers tested and can also be used for the propellers with dimensions close to those used for its development. The propeller performance data obtained during the experimental tests are made available the community to further increase the documentation on propellers tested at low Reynolds numbers.
Keywords: Propeller, Low Reynolds propeller performance, Propeller tests, Wind tunnel
Experimental Study on Soils Stabilized with Two Types of Plastic Waste
Authors: Gardete Dinis , Luzia Rosa 
Published: June 2020

The reuse and recycling rates for plastics are still below desirable values. The valorisation of plastic wastes that presently end in landfills or is incinerated can help to mitigate this environmental problem. There have been studies in soil improvement using plastic waste. Two types of plastic waste were used to assess their ability to improve soil properties for embankment construction and pavement layers. The selected plastic wastes are made from shredded package labels and ground bottles. The main properties of the soils were characterized. Three percentages of plastic waste were used, and the bearing capacity of the soil determined using CBR test (California Bearing Ratio). The results from the tests show that plastic waste stabilization leads to an increase in bearing capacity, expressed in CBR values, for low contents of plastic waste. This increase was more effective for high penetration values. Reduction in the bearing capacity was observed for higher plastic waste contents. Maximum dry unit weight decreased with increasing plastic waste content, whereas expansion increased with increasing plastic waste content.
Keywords: Soil stabilization, Plastic waste, CBR test, Compaction, Earthworks
Manufacturing and characterization of epoxy resin with Fe3O4 and SiO2 particles
Authors: Molina José , Szczucka-Lasota Bożena , Węgrzyn Tomasz , P. Silva Abílio , Maceiras Alberto 
Published: June 2020

Thermosetting polymers are very popular in the automotive and aeronautic industry, in particular epoxy resin is widely used as matrix thermoset in carbon and glass fibre reinforced composites. The properties of these epoxy-based polymers can be improved with the addition of particulate or small fibre materials in order to construct a lightweight material with enhanced mechanical and structural response. This work aimed to manufacture and characterize epoxy resin reinforced composites with iron (II,
III) oxide (magnetite, Fe3O4) in amounts of 0.25, 0.5 and 1 wt%, and 2 and 4 wt% of fumed silicon dioxide (silica, SiO2). Mechanical properties were investigated by three-point bending flexural test, fracture toughness, flexural stress relaxation. In addition, apparent porosity, apparent density and Differential Scanning Calorimetry tests were performed. The results showed that the addition of Fe3O4 does not contribute significantly to the improvement of mechanical properties. However, fumed SiO2 promotes a considerable improvement in the mechanical properties.

Keywords: Composite, epoxy resin, Fe3O4, SiO2, mechanical properties
Noise As a Factor of Green Areas Soundscape Creation
Authors: Sztubecka Małgorzata , Skiba Marta , Mrówczyńska Maria , Mathias Michael 
Published: June 2020

The research subject presented in the paper is acoustic perception, the perception of a sound landscape by a human. The paper aim was formulated - knowing the sources of noise based on the subjective assessment of recipients allows for sustainable management of green areas (city parks). The need to shape a harmonious landscape may contribute to finding a new function and attractive form for the studied areas. Research carried out for selected city parks in Bydgoszcz (Poland) concerns the registration of responses of people assessing the sound landscape (subjective approach). Completed studies allow ”translating” subjective assessments into meaningful values using fuzzy cognitive maps. The scenarios completed show the possibility of using tools supporting the decision-making process in urban planning of city parks in relation to existing acoustic conditions.
Keywords: Noise, Soundscape, Green areas, Urban planning, Environment
Turbulence Quantification in Supercritical Nitrogen Injection: An Analysis of Turbulence Models
Authors: Magalhães Leandro , Carvalho Francisco , Silva André , Barata Jorge 
Published: June 2020

In Liquid Rocket Engines, higher combustion efficiencies come at the cost of the propellants exceeding their critical point conditions and entering the supercritical domain. The term fluid is used because, under these conditions, there is no longer a clear distinction between a liquid and a gas phase. The non-conventional behavior of thermophysical properties makes the modeling of supercritical fluid flows a most challenging task. In the present work, a RANS computational method following an incompressible but variable density approach is devised on which the performance of several turbulence models is compared in conjunction with a high accuracy multi-parameter equation of state. Also, a suitable methodology to describe transport properties accounting for dense fluid corrections is applied. The results are validated against experimental data, becoming clear that there is no trend between turbulence model complexity and the quality of the produced results. For several instances, one- and two- equation turbulence models produce similar and better results than those of Large Eddy Simulation (LES). Finally, considerations about the applicability of the tested turbulence models in supercritical simulations are given based on the results and the structural nature of each model.
Keywords: Supercritial fluids, RANS turbulence modeling, Liquid rocket engines
Determination of the Drag Coefficient of an Autonomous Solar Lighting Column Using Wind Tunnel Simulation and Computational Analysis
Authors: Da Silva Dias Vitor Hugo , Almendra Roque João Carlos , De Sousa Rosa Sérgio Manuel , Aparecido Gomes Francisco Augusto , Rodrigues Andrade Carlos Alberto 
Published: June 2020

The Sun is the largest source of energy available and many studies for the development of technologies capable of harnessing this energy are constantly being conducted. Among the technologies developed are photovoltaic solar panels that have many applications and among them are the autonomous solar lighting columns that have been growing in popularity especially in urban and industrial environments. These columns are installed in open regions and have their structure exposed to the mechanical actions imposed by the wind, so they need to be correctly designed to support them. There are aerodynamic variables that must be determined for the design of these columns, especially the drag coefficient, a property linked to the geometry of a body, which represents its interaction with a flowing fluid. Due to the complexity of determining these variables, experimental methods are constantly used to obtain these values. Classically, wind tunnel simulations are used for this purpose, but they can be expensive and difficult to perform. Fluid dynamic computational analysis has been widely applied to replace physical analysis. In this work, the drag coefficient of an autonomous solar lighting column is determined by wind tunnel simulations and computational analysis. With the obtained results, a comparison is made to verify the fidelity of the data obtained by computational means when compared to those obtained through the wind tunnel simulations.
Keywords: Drag coefficient, Wind tunnel simulations, Computational Fluid Dynamic analysis, Autonomous solar lighting columns
Study on the Manipulation of Plasma Density around a Cubesat Using Magnetohydrodynamics
Authors: Dias Filipe , Xisto Carlos , Páscoa José 
Published: June 2020

During hypersonic flight regime or re-entry flights, a phenomenon known as radio blackout occurs, in which the high velocities attained lead to a significant increase in temperature surrounding the vehicle. This raise is so substantial that the molecules around the vehicle start to ionize, surrounding the vehicle in electrons. These electrons will prevent electromagnetic waves from leaving or reaching the aircraft, preventing all communications. Several blackout mitigation schemes have been proposed, among which is the magnetic window. In this scheme, a magnetic field is imposed near the nose of the aircraft, which will then prevent electron movement, generating a spectral window through which the electromagnetic waves can pass. In this work, the effectiveness of this method in affecting the plasma density is tested. The mesh is tested for grid independency, ensuring an accurate solution in a sensible ammount of time. The effect of different magnetic field intensities is then tested for a CubeSat flying in hypersonic flight regime, in order to determine the effect of the magnetic field in the electron number density.
Keywords: Magnetohydrodynamics, Radio blackout, Magnetic window, CubeSat