bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effect of A-PRF Application on Palatal Wound Healing after Free Gingival Graft Harvesting: A Prospective Randomized Study
Authors: Sousa Filipa , Machado Vanessa , Botelho João , Proença Luís , Mendes José João , Alves Ricardo 
Published: March 2020

Abstract
Objective The aim of this study was to investigate the healing effect of advanced platelet-rich fibrin (A-PRF) clot membranes in palatal wounds, resulting from free gingival graft (FGG) harvesting, on the reepithelization rate and on the pain experience after surgery.
Materials and Methods Twenty-five patients requiring FGG have participated in this prospective cohort study. After FGG harvesting, the test group (n = 14) received A-PRF clot membranes at the palatal wound and the control group (n = 11) received a gelatin sponge. Epithelialization rate of the palatal wound, wound healing area, correspondent percentage of reduction, and postsurgical pain experience were assessed at 2, 7, 14, 30, and 90 days.
Results A-PRF group had higher palatal wound reduction than the control group, at 7, 14, and 30 days of follow-up. The highest difference between the groups was attained at 30 days (91.5% for A-PRF vs. 59.0% control group). At 14 days, a significant difference in the proportion of patients showing total epithelization was found: 64.3% for A-PRF versus 9.1% for the control group. At 90 days, both groups showed total recovery. The control group experienced higher pain level and discomfort until the 14th day, being notably higher on the second day.
Conclusion The results suggest that A-PRF membranes haste the healing process, and promote greater reduction along the recovery period and less painful postoperative period.
Concanavalin A Enhanced Proliferation and Osteogenic Differentiation of Dental Pulp Stem Cells
Authors: Suardita Ketut , Arundina Ira , Tedjosasongko Udijanto , Yuliati Anita , Peeters Harry Huiz , Wijaksana I Komang Evan , Surboyo Meircurius Dwi Condro 
Published: March 2020

Abstract
Objective Dental pulp stem cells (DPSCs) can be used as a component in the formation of regenerative dentine during direct pulp capping therapy. Concanavalin A (ConA) is a type of lectin with a molecular weight of 26 kDa derived from the Canavalia ensiformis plant. Lectins possess strong proliferation and differentiation abilities in various animal cells including lymphocytes, osteoblasts, and chondrocytes. The aim of study was to determine the effect of ConA on the proliferation and osteogenic differentiation of DPSCs in vitro.
Materials and Methods In this in vitro study, DPSCs were isolated from third molars before ConA induction was performed at concentrations of 5 and 10 μg/mL. The proliferation assay was determined by 3-(4,5-dimethylthiazol-2-yl)-2, 5-diphenyltetrazolium bromide (MTT) assay. Osteogenic differentiation was determined by means of mineralization.
Statistical Analysis Data were analyzed using analysis of variance and a Student’s t-test. The p-value was set at 0.05.
Results The addition of 5 and 10 µg/mL of ConA to DPSCs can significantly increase the proliferation and osteogenic differentiation of DPSCs (p ≤0.05).
Conclusion ConA can increase the proliferation and osteogenic differentiation of DPSCs.
Tea Tree Oil versus Chlorhexidine Mouthwash in Treatment of Gingivitis: A Pilot Randomized, Double Blinded Clinical Trial
Authors: Ripari Francesca , Cera Alessia , Freda Monica , Zumbo Giulia , Zara Francesca , Vozza Iole 
Published: March 2020

Abstract
Objective The study evaluated the efficacy of tea tree oil for the treatment of gingivitis.
Materials and Methods The tea tree oil was administered in the form of mouthwash and then compared with a mouthwash with chlorhexidine 0.12%. Both treatments were domestic and lasted for 14 days. Patients were chosen according to random criteria, aged between 18 and 60 years, and who showed a clinically evident gingivitis. In clinical evaluation, the following clinical criteria were taken into consideration: gingival index (GI), plaque index (PI), bleeding index (BI), probing depth (PD), the presence of dental dyschromia, and the presence of taste alteration. The subjects were evaluated before (T0) and after the treatment (T1), and the data collected for each patient were recorded on a periodontal chart.
Results The comparison showed that tea tree oil offered a better improvement in the evaluation of PI, BOP, and PD; furthermore, it did not cause dental dyschromia and taste alteration. In group A, treated with tea tree oil, PI decreased from 53.25 to 5.50% and BI from 38.41 to 4.22%. In group B, treated with chlorhexidine PI decreased from 47.69 to 2.37% and BI from 32.93 to 6.28%. Instead, the subjects using chlorhexidine 0.12% blamed a distaste for the product that caused a slight taste alteration; 20% of them showed iatrogenic dental dyschromia.
Conclusions The collected data showed the efficacy of both treatments. Although further research works will be necessary, this study showed that tea tree oil could be an effective nontoxic substitute for the therapy of gingivitis.
Effect of an Optical Whitening Toothpaste on Color Stability of Tooth-Colored Restorative Materials
Authors: Hashemikamangar Sedighe Sadat , Hoseinpour Farnoosh , Kiomarsi Nazanin , Dehaki Mehrzad Gholampour , Kharazifard Mohammad Javad 
Published: March 2020

Abstract
Objectives This study aimed to assess the effect of an optical whitening toothpaste on color stability of microhybrid, nanofilled, and microfilled composite resins and resin-modified glass ionomer (RMGI) cement in comparison of two other toothpastes.
Materials and Methods In this experimental study, disc-shaped composite samples were fabricated. The samples were then polished using silicon carbide papers. Twenty-seven samples of each material were fabricated and subjected to colorimetry using a spectrophotometer. Each group of material was then divided into three subgroups for the application of conventional whitening and whitening containing blue covarine toothpastes. One operator brushed the samples with an electric soft toothbrush with circular motion twice a day, each time for 30 seconds. Colorimetry was performed at 0, 1, 7, 30, and 90 days.
Statistical Analysis Two-way analysis of variance (ANOVA), one-way ANOVA, and Tukey’s honestly significant difference (HSD) test were used for statistical analysis.
Results The interaction effect of type of restorative material and time on ∆E was not significant at baseline or 1 day (p > 0.05). The effect of type of toothpaste on ∆E was not significant at baseline or 1 day (p = 0.78) but the effect of type of material was significant (p < 0.05). The toothpastes had significantly different effects on ∆E of Z250 at all time points (p < 0.05) except for ∆E0–30 (p = 0.106). The toothpastes had significantly different effects on ∆E of Z350 and Gradia at all time points (p < 0.05). The same was true for RMGI except for ∆E0–7 (p = 0.43) and ∆E0–90 (p = 0.52). The majority of color changes caused by toothpastes were not clinically perceivable (∆E < 3.3), except for ∆E0–90 by the whitening toothpaste (∆E = 9), ∆E0–90 by the conventional toothpaste for Z350 (∆E = 3.9), and ∆E0–1 by the whitening toothpaste for RMGI (∆E = 3.7).
Conclusion The color change of all composite samples was not clinically perceivable (<3.3) at all time points, which shows that the tested toothpastes do not cause a significant change in color of composite materials.
Spectroscopic study of GdVO4 : Yb + Er crystals
Authors: Klimin S.A. , Loiseau P. , Caurant D. , Popova M.N. 
Published: March 2020

Abstract
GdVO4 crystals doped with different erbium and ytterbium concentrations have been grown in order to study their spectroscopic and kinetic properties and identify the nature of active centres in them. Their polarised transmission and luminescence spectra have been used to construct energy level diagrams of the Er3+ ion. The lifetime of the lower level of the 4I11/2 excited-state multiplet has been shown to decrease markedly with increasing ytterbium concentration. Inequivalent erbium centres have been observed to form in the crystals with increasing ytterbium concentration.
Fructose syrup production from Onggok with isomerization process by Mg/Al hydrotalcite catalyst and glucose isomerase enzyme
Authors: Permanasari A R , Fauzan A , Rachmalia N L , Elfanti R , Wibisono W 
Published: March 2020

Abstract
Onggok, solid waste of tapioca still contains high carbohydrate. This component can be converted to liquid sugar (glucose and fructose). Hydrolysis process convert carbohydrate become glucose syrup while isomerization process would change those glucose become fructose syrup. This study aims to produce fructose from Onggok with isomerization by Mg/Al hydrotalcite catalyst and compare the productivity 500ml Onggok substrate (10.32 percent DS) was hydrolyzed become glucose in liquefaction and saccharification process. Liquefaction took placed in 95 degree C, pH 6.5, for 1 hour, by adding 0.067 percent (v/v) α-amylase while the saccharification was start by adding 0.067 percent (v/v) glucoamylase at 60 degree C, pH 5, for 1 hour. Isomerization with Mg/Al hydrotalcite took placed in 50 ml hydrolysate sugar, 1 percent (b/v) catalyst, and 100 degree C while process with glucose isomerase was at 100 ml substrate, 60 degree C, pH 8.2, and same catalyst ratio (1 percent). Isomerization process for each catalyst would be hold in 3, 5, and 7 hours. The best result of isomerization productivity was 39.29 g/L. h for process with Mg/Al hydrotalcite catalyst, while isomerization yield was 6.18 percent for process with glucose isomerization enzyme.
Lipid extraction from Aphanothece sp. using ultrasounds
Authors: Abdilah F , Troskialina L 
Published: March 2020

Abstract
The unprecedented reduction in the availability of fossil fuels requires the research community to find safe, clean, renewable and sustainable energy sources. One promising source is microalgae biofuel, which can reduce environmental problems and energy crises due to its closed carbon cycle. Selecting the right strain and optimizing lipid productivity are very important for the success of the biodiesel conversion process economically. In this study, the lipid extraction process from Aphanothece sp. dry biomass which was previously grown in photobioreactor systems with atmospheric carbon dioxide feed inputs was carried out using the ultrasound method, with variations of solvent systems. The maximum lipid extract yield of about 40.79 ± 0.76 percent DW, w/w was obtained for the dichloromethane/methanol ratio of 1:2 (v/v).
The influence of K2CO3 to rice husk ratio for CO2 adsorption in fixed bed column
Authors: Elizabeth L , Heriyanto  
Published: March 2020

Abstract
Carbon dioxide emissions contributed by fossil fuel, have become a severe concern in relation to global warming and health issues. High content of CO2 will caused low content of heat value. This study is to reduce the concentration of CO2 gas by adsorption using K2CO3 rice husk. The method used is adsorption using a laboratory scale fixed bed column equipment at atmospheric condition and room temperature. The adsorption column was filled with K2CO3 and rice husk which composition (50: 8; 75: 8; 100: 8; 125: 8) grams, CO2 gas flowed from the bottom of the column which flow rate 9 liter per minutes (LPM). Then the sample was taken at the top of the column every 5 minutes. It showed that the highest adsorption capacity is 7.54 percent CO2 removal/gr adsorbent which amount of K2CO3 adsorbent 50 gr at 9 LPM CO2 inlet flow rate. It showed that most adsorbents have the most active sites to adsorb CO2. It also showed that K2CO3 50 gr have the longest breakthrough time than others amount of K2CO3.
Implementation of value engineering in design building for the construction of general hospitals in Jembrana Regency
Authors: Sudiarsa M , Suasira I W , Sudiasa I W 
Published: March 2020

Abstract
The choice of construction design is very important to do because it can show the quality of the building, and produce development at an efficient and optimal cost. One of them can be done by value engineering. According to Zimmerman and Hart in Hutabarat (1995) value engineering is a systematic approach to achieving the best functional balance between costs, reliability and appearance of a system or project. In this study, we tried to analyse the Construction of Negara General Hospitals in Jembrana Regency especially in structural work because it had a high probability of VE. This project consists of 3 floors which require a total cost of IDR 31, 965, 702, 000. In the creative stage this research uses alternative - the best alternative by changing the quality of existing concrete (K300) to concrete quality (K350) and Composite. From these stages, the best alternative is used in column, plate and beam reinforced concrete, namely alternative II composite or using WF Steel Column, floor deck plus Wire mesh can be chosen because it has the largest total value compared to other alternatives. While the cost savings is IDR 636, 761, 310.87 or 14.19 percent of existing.
GeomatikaDroid: An Android application for improving theodolite measurement
Authors: Sulistyo T , Achmad K , Respati S 
Published: March 2020

Abstract
In the era of the fourth industrial revolution, the implementation and integration of digital technology and physical processes are unavoidable in which teaching and learning geomatic are included. In the field, students generally make mistakes in calculation of horizontal distance and height difference that are caused by the error in staff reading or/and its recording. The general aim of this research is to develop geomatic application on android, so that it will be portable and easy to use in order to reduce the parallax and staff reading error in theodolite. In the design and development of GeomaticDroid Application, the Java and PHP programming languages were implemented and data were recorded in MySQL. Application testing and debugging were conducted using Android 7.0. In the field testing, GeomatikaDroid has shown consistencies in clarity, better legibility of staff reading and recording compared to conventional staff reading and recording method. GeomatikaDroid has maximum parallax error of 1 mm. Meanwhile, the measurement without GeomatikaDroid makes staff reading error of 18 mm. The z test of two independent samples proved that those two samples have significant differences in error.
Implementation of occupational health and safety (OHS) management system in The Villa Babakan Canggu Badung development project
Authors: Sutapa I N , Sutapa I K , Suasira I W 
Published: March 2020

Abstract
The general objective of the research is to find out the measured data of standard or SOP deviations with the implementation of OHS in the field and to find out the causes of the implementation of OHS as an influence on the number of occupational accidents that occur in construction projects. The research method uses descriptive and observational design, research data in the form of questionnaires as primary data and OHS plan reports as secondary data. As subjects in the study were 25 workers in the Villa Babakan Canggu building project. Based on the results of the analysis through the initial level internal audit with 64 criteria according to Government Regulation No. 50 of 2012 concerning the application of OHS, the assessment level of the application of OHS was 80.45 percent with the category of good application and the results of the quiz test stated that the workers agreed that the project implementers had prepared working conditions accordingly with OHS standard with a score of 1.75. Workers do their job with a natural work attitude with a score of 1.68.
Tri Hita Karana-based green environment building management model
Authors: Kristinayanti W S , Mas Pertiwi I G A I , Santiana M A , Aryawan I G M O 
Published: March 2020

Abstract
The development of tourism in Bali has a positive impact on improving people’s welfare and national economic development. This is followed by a negative impact on the environment in development activities, namely land use change and declining green land area, which in turn did not reflect sustainable development. Therefore, tourism development efforts must also be balanced with efforts to prevent negative impacts to maintain sustainability is and based on local cultural values. Green building environmental management is one aspect in the application of international standard, namely the Greenship issued by the Green Building Council Indonesia. The purpose of this study is to create green building environmental management model based on Tri Hita Karana, one of the local wisdoms of Balinese culture, consisting of Parahyangan, Pawongan and Palemahan. The study is conducted on several hotel buildings in Bali and using multiple linear regression tests. It shows that the application of environmental management aspects of green buildings had a significant effect of 75.3 percent on Palemahan, 20.2 percent on Pawongan and 5.1 percent on Parahyangan. The aspect of advanced waste management which is one of the aspects of environmental management of green buildings has the highest influence of 35.3 percent on Palemahan.
Implementation of ergonomic on parking management training increases parking user satisfaction in Renon Plaza Denpasar
Authors: Sutapa I K , Sudiarsa M , Sutapa I N 
Published: March 2020

Abstract
The indicators of park user satisfaction were in the form of a decrease in workload, a decrease muscle energy usage, increased ease of parking, increased parking convenience and increased parking productivity. An intervention basement used by parking arrangement-based motorcycle ergonomics. Measurements were made before and after repair. Washing out and adaption (WOA) each were conducted for 7 days consisting of one day WO and 6 days of adaptation. Data were analysed descriptively, tested for normality (shapirowilk) and homogeneity (Levene Test). Normally distributed data and is not homogeneous, different test with Friedman Test, different test between periods used the Wilcoxon test. Data were analysed with a significance level of 5 percent. The results showed that the parking space angle 600 a decrease in workload at 27.58 percent (p is less than 0.05), a decrease in muscle energy usage at 30.97 percent (p is less than 0.05), an increase in the ease of parking at 105.80 percent (p is less than 0.05), an increase in the parking convenience at 74.63 percent (p is less than 0.05) and an increase in parking productivity at 166.67 percent (p is less than 0.05).
Controlling hand robot using pattern recognition of finger movement
Authors: Risandriya S K , Pamungkas D S 
Published: March 2020

Abstract
The system enables to mimic the movement of the subject up to 87.5 percent accuracy. Electromyography (EMG) is one of the methods to control a robot’s hand. This paper discusses the utilization of the signal EMG with a neural network algorithm to activate the fingers of the robot hand. The statistical analysis, which is the root mean square method, is used to train the patterns of the motion of the fingers of the user. Moreover, to sense the user’s EMG signal, Myo armband is used. The results obtained reach 92.68 percent using 0.9 learning rate, 0.00001 error tolerance, one hidden layer with five nodes.
Preliminary study of building a low-carbon emission concept for Bali with nocturnal light analysis
Authors: Swardika I K , Santiary P A W , Suasnawa I W 
Published: March 2020

Abstract
Energy crisis and increase energy consume initiate depletion of natural resources and environmental degradation and that will leads to global warming and climate change. Nowadays, tourism considered being one of the important industries in the world. It also acknowledged as significant largest consumers of energy through many sectors including supporting facilities for tourists that focused on this paper. Bali’s most important tourist destination and become proponent of economic has many resorts surrounded by business trade support. Increasing electricity demand becomes present issues. This paper proposes a method to build community-based initiatives for reducing carbon emissions and saving energy. The method consists of procedural to build light threshold regulation. This research uses light-meter survey, a night-time satellite dataset, and other supporting data. The light threshold uses night-time satellite dataset. Classes of light thresholds are defined from histogram analysis. Results show a relationship of lux light-meter survey mean with night-time satellite dataset mean. From results created maps of class regions that show approximate of level energy used.
Design a microstrip antenna 2 elements for 900 MHz GSM system
Authors: Endri J , Ciksadan  , Setiawan I , Handayani A S , Taqwa A , Husni N F , Sitompul C R , Amin J M 
Published: March 2020

Abstract
Microstrip antenna design aims to increase the reach of cellular devices using the GSM system because there are still areas in Indonesia that have not been reached by this service. This antenna is made with an epoxy substrate material that have a dielectric constant (εr) = 4.4 and a thickness of 1.6 mm. This antenna uses a microstrip feed channel to send information signals from radiating components to cellular devices. in this antenna design a linear array method is used which has two elements to increase the gain possessed by the antenna. in this study antenna simulation using CST Studio suite software. the results of the simulation show that the antenna has a Return loss of -59.38 dB, has a VSWR of 1.06 and have a Circular radiation pattern. Circular radiation pattern shows that the antenna can receive signals from an angle of 0 to 360 degree and can be used by mobile devices to increase the range of the GSM signal.
Comparison of three phase induction motor start using DOL, Star Delta and VSD Altivar61
Authors: Sukarma I N , Ta I K , Sajayasa I M 
Published: March 2020

Abstract
In general, induction motors can be operated by connecting the motor directly to the supply circuit or by using a voltage that has been reduced to the motor during the start period. The obstacle of using a 3 phase induction motor is when starting, where the motor requires more current, which is about 5 to 7 times the nominal current, causing the voltage on the system to drop which can interfere with other equipment. In this study the researchers analysed the starting of a 3 phase induction motor using the direct on line system (DOL), star delta, and variable speed drive (VSD) both when the motor is free of charge and when the motor is loaded. Through this research can be seen the difference in the magnitude of current, voltage, power and THD. From the results of observations on the three types of 3 phase induction motor starting methods, it was shown that using a variable speed drive (VSD) altivar61 gave the largest decrease in current when compared to other systems.
Design of mini electric car with electric charging using solar cells
Authors: Hajar I , Yendra A 
Published: March 2020

Abstract
The reduced reserves of fuel oil encourage people to create machine with alternative energy sources, while the needs of vehicles are increasing, the development of electric vehicles is getting more intense. The problem is electric vehicles that have been developed still have weaknesses, for example, requiring a lot of batteries, no charging system, and the price is relatively expensive. The research objective is to design an electric vehicle charging system using a solar cell. The electric car battery charging system is designed using batteries and 60Wp solar cells as a voltage generator. The results showed that the highest voltage of solar cell 60wp on the first day was 12 am with a voltage of 19.02 V with light intensity of 104000 Lux, while on the second day at 12 am with a voltage of 18.81 V with a light intensity of 81000 Lux, and on day The third is at 2 pm with a voltage of 18.37 V with a light intensity of 62000 Lux. The conclusion of the research is not always high light intensity the output voltage is high. Battery charging time in measurement that is about 4 hours 16 minutes.