bluuebunny/crossref_metadata_2025 huggingface dataset:
Development of Guidance and Counseling’s Model Services with Bibliotherapy Techniques to Improve Prosocial Behavior For Student of Primary School
Authors: Chitra C I , Noor M
Published: August 2019

Counseling guidance services need to be applied at all levels of education because the process of learning and learning experience at the level of early education and primary school will influence future behavior at the junior high school, high school and college level. Therefore, based on the results of the pre-research obtained and supported by the opinions of experts, there is a need to develop models of guidance and counseling services for elementary school students with bibliotherapy techniques to improve prosocial behavior. This type of research is research and development based on the principles and steps of Borg & Gall. The results of this study were: (a) 1) The level of prosocial behavior of students in SD Negeri 1 Ciporang globally before being treated was in the medium category, after being given treatment in the high category. (b) Produced a model of counseling services for elementary school students with bibliotherapy techniques to improve students’ prosocial behavior consisting of 7 components, namely 1) Rational, 2) Vision and mission, 3) Objectives, 4) Contents of Services BK elementary school students with bibliotherapy techniques, 5) System Support, 6) BK Service Procedure for elementary students with bibliotherapy techniques, 7) Evaluation and Follow-up. (c) BK Service Model Elementary students with bibliotherapy techniques are effective in improving the prosocial behavior of students of Ciporang Primary School
Implementation of Index Card Match Learning Model with Problem Posing Approach Assisted by MATLAB Software to Improve Students’ Problem Solving Ability
Authors: Nuraeni Z , Rosyid A
Published: August 2019

The purpose of this study was to examine the steps of the Index Card Match learning model with the problem posing approach assisted by MATLAB software and its effect on the problem solving ability of high school students. This research is a quasi-experimental research with non-equivalent control class design. The population in this study were all students of class XI Senior High School 2 Kuningan, with purposive sampling technique taken two classes as a sample. A distinctive feature of this combined model is that students make their own questions and answers on separate cards, so that after the cards are collected and randomized, students are asked to find suitable questions and answers. While the results of the data analysis showed the average initial problem solving ability of students in the experimental class is equal to the average initial ability of students in the control class with a significance value of 0.212. But after the treatment, there were differences in the average problem solving ability in the experimental class and control class that is equal to 3.38 and p-value of -2.563 with asymp. sig 0.010, rejection for H0 which means the mathematical problem solving ability in the experimental class is better than control class.
The Effect of English Classroom Tasks In Contextualized and Localized on Students’ Performance
Authors: Nuraida Ida , Wulansari Sisca
Published: August 2019

This study is determined how the students respond to contextualized and localized English classrooms. The research used true experiment research, the aimed of this research is to determine the effects of contextualized and localized English classroom task on students performance. It is investigated contextualized and local English based on students perception in English classrooms task. It determined the terms of students’ level of participation and the score of summative task. This research used perspective sampling consist of 23 student at A class and 25 students at B class enrolled at the regular student at English Education Department, it’s serve as the respondents of the study and finding reveal that the students respond to English education tasks active in the class in participating. The result show have very high level of performance in term of participation and summative test score, and the student strongly agree with conceptualized and localized English classroom task.
Study of Protected Current for Stainless Steel and Carbon Steel Cathode from Rust Attack to Determining Optimum Flow of Electricity
Authors: Yuliati A , Nofiyanti E
Published: August 2019

Rust protection in a construction can be done by several methods such as the use of organic or inorganic layers of protection, anodic protection, and cathodic protection method. Cathodic protection consists of protection by using sacrificial anode as a producer of a protected current and using a protection current generated by an external power supply continuously. In a water-immersed construction commonly used sacrificial anode as a protection against rust in the construction, such as water tank. A sacrificial anode (rod, usually Magnesium or Zinc) is inserted in the construction. When submerged, the anode will be submerged. Water serves as an electrolyte solution. By connecting the sacrificial anode with the construction, a cathode anode system is formed. The anode releases the electrons and undergoes an oxidation reaction, while the cathode undergoes a reduction reaction. By achieving an equilibrium between the oxidation and reduction reactions, the construction is protected from rust. Considering the above, then made the system of protection against rust that is more practical by using the current protection method. The difference with the sacrificial anode method is the use of an external power supply to produce a current (direct current) that is passed through an inert anode such as aluminum, stainless steel or graphite, so no anode replacement is required as long as the tank is used. Using a simple circuit, the amount of electric current flowed can be adjusted according to the dimensions of the tank. Electric current used is also relatively small so it is safe for users. To study the above system made a model use stainless steel and carbon steel material to be able to determine the optimal protection current.
Tectonic in Architecture in Capability of Capturing Epoch
Authors: Priyomarsono Naniek Widayati , Surya R , Budiman D S
Published: August 2019

Globalization excludes territory, carries out universal spirit as more emphasizing univalence rather than multivalence. In architectural context, universal perspective is just at doubt in its capacity to respond epoch challenge. Modernity proliferating into diversity of life aspects causes architecture attaint to hegemonic status not rich of colours, texture, ornament, and not rationalistic. Tectonic aspect in architecture is expected to be able to uplift locality dignity rooted from existing culture, nature, and material resource. This research is done with a qualitative, deductive and verificative method with study object of architectural work already available. Field observation result refers to a theory setup deductively from journal collections studies; expert is opinion so that it results in tectonic variable formulation in architecture. Research object selected is architectural work to explore tectonic architecture, known adept at exploring natural potency and local cultural riches as well as material usage of local building. A result obtained is a comprehension on tectonic in architecture and all aspects constituting it. A comprehension gained is tested to architectural work with perspective up to their implementation in the field. Finally, it concludes that tectonic aspect in architecture can be a creation alternative of locality architecture in Indonesia.
Monitoring Factors in Quality Control of Reinforced Concrete Casting Works
Authors: Luthan P L A , Sitanggang N
Published: August 2019

Quality control of casting work is very necessary to be prepared to minimize material misuse and procedural errors in the field, so that it will produce quality concrete. Concrete qualityt that is not in accordance with planning is due to the absence of guidelines that will be a reference for a supervisor so that the implementation of the work is not in accordance with the quality standards used. The purpose of the study was to determine the factors of casting job supervision that can be used as a reference for supervision of reinforced concrete works. The study was conducted in the city of Medan by survey method. The research sample used was a multilevel development project located in the city of Medan with a total of 20 construction projects with purposive random sampling method. The research instrument is the supervisor’s guide in the field and interviews developed by the research team. Research data obtained and processed using descriptive statistical analysis. The results of the study are that the factors for supervisors so that the casting can run well and in accordance with the quality of works are as follows: 1) Preparation stage: determine the quality of concrete, working track (ready mix mobilization), equipment placement, workforce preparation, and schedule casting. 2) Implementation phase: determination of casting lines, slump testing, manufacturing of test objects, Pouring / concreting and compaction. 3) Finishing Phase: Finishing, Maintenance, Scaffolding and mold opening.
Exploratory Research on Green Information Technology Knowledge
Authors: Wibowo S , Nada N Q , Novita M , Budirahardjo S
Published: August 2019

In this study we focused on the extent of green IT knowledge and the effort to minimize energy use and electronic waste (e-waste). It was conducted by distributing questionnaires to students of the Faculty of Engineering and Informatics, Universitas PGRI Semarang. By using random sampling technique, we considered 91 students as the total sample size. It consists of 20 participants from informatics study program, 7 participants from architecture study program, 4 participants from electrical engineering study program, 20 participants from civil engineering study program and 33 participants from mechanical engineering study program. The results show that our participants are 16-25 years old. They have been using laptop/PC for about 5-10 years and 3-5 hours per day. In average, they owned only one laptop/PC. In a day, they print more than 50 sheets using one-sided mode. It implies that our students actually understand enough the essential of green IT. Nevertheless, efforts to minimize e-waste must be increased.
Development Of Devices In Learning Based On Realistic Approaches To Improve Emotional Intelligence Of First Middle Students
Authors: Rahman A A
Published: August 2019

This study aims to see how valid, practical and effective realistic approach-based learning device are developed to improve students’ emotional intelligence. Learning device that are developed are learning implementation plans, student worksheets and student books. By conducting two stages of trial, phase I by examining the validity and practicality of the devices assessed by five validator experts in their field. Then phase II by conducting a device test in class research to see the effectiveness of the device. The research model refers to the 4-D thiagarajan Model (define, design, develop, disseminate) with the flow of student character data collection, design learning device based on realistic approaches that suit the needs of students, conduct validation and trial stages and disseminate learning devices to become teacher references in teaching. The results of phase I explained: 1) the device was declared valid based on the assessment of five expert validators with a slight revision, 2) the device fulfilled the practical criteria which was reviewed from the implementation of the equipment in trial I (3,49) and trial II (3,97) reached high category. The results of Phase II explained: 1) The effectiveness of realistic approach-based learning devices in terms of classical learning completeness, which reached 86.11% of students who participated in learning were able to achieve a score of ≥75, 2) Increased students’ emotional intelligence using realistic approach-based learning device on the material Fractions are the results of the average emotional intelligence questionnaire of students in the first trial of 75,33 to 75.87 in the second trial, increasing the average emotional intelligence of students by 0,51. In addition, the average of each indicator of emotional intelligence increased from trial I to trial II.
The Improvement of Sleep Quality through the Combination of Progressive Muscle Relaxation and Murottal Therapy among Elderly
Authors: Handayani Sri , Swasana A E , Purnomo R T , Agustina N W
Published: August 2019

Elderly gradually experience various changes in their aspects of life. Changes that occur during this periodmaydisturb the stability of physiological and psychological processes which result in the sleep quality disturbance. It is necessary to prevent it by providing combination therapy to them. Objective: To determine the effect of thecombination therapy on the quality of sleep among elderly. Research Methods: this research used quasi-experimental design with non-equivalent control group design. We involved 28 elderly who had poor sleep quality. The samples were chosen by using purposive sampling method. We gave progressive muscle relaxation and murottal therapy to the intervention group, whilst we only gave progressive muscle relaxation therapy to the control group. The results indicated that 71.4% of elderly experienced sleep quality improvement after being treated bycombinationtherapy, while only 28.6% of the elderly experienced sleep quality improvement in the control group. The Mann Whitney Test results showed the number of p(0.000) <α(0.05) which means there was a difference in the quality of sleep between elderly in the intervention group and the control group.
The Placement of Intravenous Catheter Installation with Phlebitis in Disease in In-Patient Room of Ciamis Regional Public Hospital
Authors: Kurniawan Rudi , Roslianti Elis , Abdul Robbi Yusep Setia , Fajar Dini Rosyani , Endrian MJW , Noviati Elis , Rahayu Yuyun
Published: August 2019

Phlebitis is an inflammation of the veins caused by mechanical, bacterial, or chemical irritants. Based on the Medical Record Data of Ciamis District Hospital (2016) the incidence of phlebitis increases every year. The impact of phlebitis is comfort, the patient’s activities and sleep patterns are disrupted. Some references from research and theory obtained from nursing books regarding the setting of intravenous catheters are gaps; the location of the installation of a good intravenous catheter is placed in the hands or arms first to reduce the risk of phlebitis. The purpose of this study is to determine the relationship of intravenous catheter placement with phlebitis in desease in in-patient room of Ciamis Regional Public Hospital in 2017. The method in this study is analytic association/correlation. The population in this study is all in-patients who are infused in the Class III of In-patient Room of the Ciamis Regional Public Hospital in May-June 2017 that covering 3 rooms, namely the Lotus Room, the Dahlia Room, and the Kenanga Room. The sampling technique used is Proportional Random Samplingwhich is partially in the population that can represent an overall target of 55 people divided into 3 rooms, they are 16 people Lotus Room, 19 people Dahlia Room, 20 people Kenanga Room. The results shows that there is a significant relationship between the Intravenous Catheter Placement and Phlebitis in disease in in-patient room of Ciamis Regional Public Hospital in 2017 because of the value of p-value (0.003) <α (0.05). An OR value of 6.909 was also obtained, meaning that the location of intravenous catheter placement in the hand had a greater risk of 6,909 times for phlebitis compared to the location of catheter placement in the arm. Veins in the hand that often occur phlebitis, namely the radial vein as many as 19 respondents (34.5%), metacarpal veins as many as 13 respondents (23.6%).
The Effects of Learning by Reproductive Health Module on Knowledge, Attitudes and Practicesregarding Adolescent Reproductive Health in Bandung District
Authors: Handayani F , Bestari A D , Nurhayati
Published: August 2019

Characteristics of adolescents often lead to negative sexual behavior that makes adolescents vulnerable to health problems, especially sexually transmitted diseases or other reproductive health problems. Based on this, efforts are needed to improve adolescent skills in healthy behavior, especially reproductive health, one of which can be given through learning using special modules. This study aims to determine the effect of reproductive health learning modules on the knowledge, attitudes and behavior of adolescent reproductive health. Method: this study used the quasi experiment method pre-post test design. The research sample was 59 students (28 control groups and 31 treatment groups). Data analysis using Wilcoxon, Chi-Square test and Mann Whitney test with α = 0.05. Results: The analysis showed there were differences in knowledge before and after learning in modules 6 and 7 (p-value 0,000), the different in attitudes before and after learning in module 7 (p-value 0.030) and differences also found in practice before and after learning in module 2 and 7 (p-value 0.001 and 0.045). Conclusion: Most of the participants in the study were not knowledgeable about reproductive health, unfavourable attitude about reproductive health and also had poor practices about reproductive health, it should be considered in the future research and intervention programs attempting to improve reproductive health outcomeslike improving learning method and media like using multimedia.
The Effect of Restriction Enzyme on the Results of mtDNA Sequence of Eel Fish from Cimandiri River Palabuhanratu
Authors: Nurbaeti Neneng , Mulyani Reni , Jefri Edwin , Novita
Published: August 2019

Research has been carried out on genetic diversity of eel from the estuary of the Cimandiri Palabuhanratu River located in the southern part of Palabuhanratu bay. Until now, research on the genetic diversity of eels that enter the estuary of the river has not been done much. Even though it is very important to maintain genetic resources, species and ecosystems of eels. Genetic resources are the basic stages in an effort to protect eel resources in Indonesia. This study used eel fish from the genus Anguilla taken from the mouth of the Cimandiri River, Pelabuhanratu. The samples were then preserved with absolute ethanol solution (96%), followed by an extraction process, amplification of PCR (Polymerase Chain Reaction), electrophoresis, and restriction of DNA sequences by enzymes HaeIII, Hin6I, RsaI, TaqI and NdeII). From the results of PCR analysis that eel on the Cimandiri River has three species, namely Anguilla bicolor short-finned,Anguilla nebulosa colored camouflage, and Anguilla marmorata. Namely is whiteeel. mtDNA D-Loop sequence eel for Anguilla nebulosa, bacillus PCR has a length of about 395 bp.Anguilla bicolor species has a length of 230 bp and Anguilla marmorata bacillus PCR has a length of about 620 bp. Of the five restriction enzymes used to cut DNA sequences (HaeIII), Hin6I, RsaI, TaqI and NdeII) all have cutting sites. Retention enzymes are enzymes that can cut DNA molecules, in phosphate sugar sequences without damaging base pairs. The main function of the restrict enzyme is to cut DNA sequences to study the organization of functions and structure of genes. Restriction enzymes that influence the cutting of mtDNA D-Loop sequences in Anguilla nebulosa, namely Hin6I, RsaI, TaqI and NdeII from the site location of 395 bp became 390 bp, 394 bp, 390 bp and 391 bp respectively. The restriction enzymes that affect the cutting of mtDNA D-Loop sequences on Anguilla bicolor, namely Hin6I, TaqI and NdeII from the site location of 230 bp became 235 bp, 232 bp and 233bp respectively. Restriction enzymes that affect the cutting of the mtDNA D-Loop sequence in the amamorta namely HaeIII, Hin6I, RSa I. and TaqI from the site of the 620 bp site to 630 bp, 600 bp, 625 bp, 610 bp respectively.
Multivariate Analysis Of The Effectiveness Of School-Base Reproductive Health Promotion Programs For Early Adolescents
Authors: Hastuti Lidia , Lestari Lilis , Wuriani  , Makmuriana Lestari , Pratama Kharisma , Gusmiah Tisa
Published: August 2019

Religiosityis one of protective factor toward adolescents’ risked behavior. It is so important to teach them the religious value to family. The understanding of reproductive health will be easier to be received by adolescents and society if the process of delivering the content always consider the values and norm held by society. The previous research finding has been developed to a school-based reproductive health promotion for younger adolescents who have not faced akhil baliq (menarche or semenarche)with religious values approach known as Program Remaja Religi Sadar Reproduksi(Religious adolescents aware reproductive issue) or simply called as “Perisai Khatulistiwa (Borneo Shield)”. This program is one of school-based reproductive health promotion that promote reproductive health with Islamic values approach. This study was aimed to know the effectiveness of this program toward adolescents’ knowledge about adolescents’ reproductive health. Quantitative studies with quasi-experimental research design, non-equivalent control group design. Data collection techniques used is purposive sampling, n = 60, at four schools, n = 30 in the two schools as the intervention group and n = 30 in the two schools as a control group. Quantitative analysis used multiple linear regression. Multivariate analysis found that the program is effective on increasing adolescents’ knowledge of reproductive health p = 0.000 (p <0.05) coefficients B 21.56 (95% CI 19.38 to 23.75). Another factor influencing the knowledge of reproductive health are siblingsp = 0.03 (p <0.05) coefficients B -1.35 (95% CI -2.55-0,12) and extracurricular activities at school p = 0.04 (p <0.05) coefficients B 0.41 (95% CI 0.01 to 0.80). The study recommended model of school-based reproductive health promotion approach to Islam named “Program Remaja Religi Sadar Reproduksi” (Religious adolescents aware reproductive issue)” with abbreviated “PerisaiKhatulistiwa (Borneo Shield)”. This program has affected the knowledge about reproductive health, among adolescents.
The Effect of using Wax and Wood as a Watermark Material on the Pottery
Authors: Barorroh Noer Laelly
Published: August 2019

Counterfeiting products in the marketing process often occurs, not only for imported goods, but also for local goods produced by small craftsmen. Watermark will be one way to show the authenticity of a product. Watermark will be one way to show the authenticity of a product. The method used to analyze watermarks is non-destructive testing. This non-destructive test utilizes digital radiography with x-ray exposure. The images obtained from the radiography are then analyzed using ImageJ. The method of analysis carried out is the method of visual analysis and physical analysis methods. The visual method in this study only identified the obtained watermark image. The identification of x-ray distribution in dry and burnt pottery was used as a method of physical analysis. The value of x-ray intensity on exposed pottery is then compared. The watermark material used is wax and wood. The Paraffin content in the candle will turn into gas if it is burned. The carbon content in wood can cause wood to gray to ash if burning is more than ± 6000C. In the process of making wet pottery, wax materials for craftsmen have difficulty printing, this can cause changes in the quality of the earthenware which is not good enough. On earthenware wood materials can be formed properly without changing quality. The watermark produced on wood burning material is not very clear. Material that can be formed in the printing process, does not change during drying, and does not change the quality of wood in the combustion process is wood material material.
Analysis and Design of Voip Server (Voice Internet Protocol) using Asterisk in Statistics and Statistical Informatics Communication of Banten Province using Ppdioo Method
Authors: Rizky Robby , Hakim Zaenal
Published: August 2019

Communication is the most important thing in the success of an activity. Communication that occurs in a computer network does not only process data packet transfers between computers, but computer technology is currently able to transfer data in the form of sound frequencies that are processed into data packets and sent between computers on the internet network. The development of internet technology is not only using for getting information, but also that is widely used. One of them is audio call or VoIP (Voice over Internet Protocol), this technology has been used by several messenger service providers, such as Yahoo Messenger, Goggle Talk, Skype, and others. Voice over Internet Protocol is a technology that makes internet media able to conduct voice communication remotely directly. Analog sound signals, like what you hear when communicating on the telephone are converted to digital data and sent over the network in the form of data packets in real time. Asterisk is a softswitch to operate the proxies, with session initiation protocol (SIP) based. The aim is to build an Asterisk-VoIP based server, so that it can be developed in future research as needed. The methodology in outline consists of two lines, namely literature study and PPDIOO (Plan, Prepare, Design, Implement, Operate, Optimize). It has been implemented in the Banten Province Communication and Information Service, which has been previously established by the internet network. So that VoIP here is functioned for maximizing it.
Realization of Hybrid Concept and Symbiosis in Green Open Space (RTH) at Housing Complex RW (Neighborhood Councils) Pluit, Jakarta Utara, Indonesia
Authors: Trisno R , Lianto F
Published: August 2019

The percentage of active Green Open Space (RTH) in Jakarta is currently still as less as 10.12 percent, and hence, it’s very interesting to discuss, as the Green Open Space in the housing complex has generally been abandoned or ignored. It is hoped that this research could answer the main issue in the Green Open Space (RTH), namely the concept of designing a Green Open Space (RTH) as an active vessel to accommodate citizen’s activities. The methodology used: First, observing if the zoning of Green Open Space (RTH) is in accordance with Regional Regulation (Perda) 1 of 2014; Second, the zoning rule of Regional Regulation (Perda) 1 of 2014 can be applied to the concept of Hybrid and Symbiosis in the Green Open Space (RTH); Third, drafting the concept of Hybrid and Symbiosis design in the Green Open Space (RTH). The findings in this study are expressed in the form of Green Open Space (RTH) and in accordance with the concept of Hybrid and Symbiosis, so this concept can be applied in the Green Open Space (RTH) at the Neighborhood Councils (RW), especially the Pluit area.
The Molecular Identification of Sea Fungus Isolates from Mangrove Litter as Antimicrobials Potential
Authors: Fathurohman M , Pratita ATK , Khusnul  , Yuliana A , Suhartati R
Published: August 2019

Marine microorganisms, one of which is sea fungus, have the potential to produce active metabolites which have pharmacological effects. This study aims to identify pure fungus isolates from mangrove litter and tested its antimicrobial activity on bacteria Escherichia coli, Staphylococcus aureus and fungus Candida albicans. In identification result of molecular using primary Internal Transcribed Spacer, Penicillium biourgeianum species were obtained in sequences DNA CTGGGTCAC…TAT. Sea fungus isolates later are fermented using a shaker at a speed of 150 rpm for 21 days and separated between the media and mycelium. The media was extracted liquid and the mycelium was macerated using ethyl acetate. Screening test of antimicrobial activity obtains the result showing antimicrobial activity against the tested microbes. Media culture and mycelium extracts which have antimicrobial activity are then determined by the MIC and MBC values. Most of the MIC test values are 256 μg/mL, which provide strong inhibitory. MBC value gained is 512 μg/mL showing a strong bactericidal. Study result shows that sea fungus isolates produce active metabolites that mostly have antimicrobial activity against Staphylococcus aureus ATCC29737, Escherichia coli ATCC10536, and Candida albicans ATCC10231.
The Determination of Heavy Metals Level : Lead in Cosmetic Soap Preparation by Atomic Absorption Spectrophotometer (AAS)
Authors: N Endah S R , Surantaatmadja S I
Published: August 2019

Nowdays, the use of cosmetics are increase. Soap is one of common cosmetics preparation used for body or face. Cosmetics soap must be safe and must not contain hazardous substances such as heavy metals. Heavy metals contained in cosmetics are generally impurities on cosmetic ingredients.Cosmetics soaps can be contaminated by heavy metals such as lead. This study intended to determine lead concentration commercial cosmetics soaps in Ciamis. Sample preparation was done by using the wet destruction using HNO3 : H2O2 (3:1). Lead was analyzed using Atomic Absorption Spectrophotometer (AAS) at the specific wavelength respectively 228,8. The results showed, just one sample that contain exceed levels of lead and 9 samples are meet the requirements.
Effects oWashing Materials and Storage Temperature on the Quality of Mango Fruit (Mangifera indica) CV. Gedong
Authors: Yunita R , Poerwanto R , Wiyono S
Published: August 2019

Mango, widely known as the “the best-loved tropical” fruit, is a popular horticultural commodity not only in Indonesia, but also in many foreign countries. Mango in Indonesia is seldom washed after picking, and before marketing and that causes low visual quality due to the sap that sticks to the peel This condition renders the fruit to be more vulnerable to rapid decay hence, with shorter shelf life. Sapstain from mango fruit skin can be cleaning by washing with slaked lime Ca(OH)2, detergen, fungicide, and yeast. This study aimed to evaluate the effectiveness of alternative washing material and temperature storage in upgrading the visual quality of mango fruits involved percentage of removed sap stain, dendritic spottings and fruit textural softness. The result showed the development of washing solution by adding (detergent 1% + slaked lime Ca(OH)2 0.5%) added fungicide or yeast, and combining with storage temperature of 12 °C and 15 °C, proved to be highly effective in improving visual quality.
Quality Test of Bulk Palm Cooking Oil In Local Market, Banjar, West Java, Indonesia Base on Perokside Value, Iodin Value and Number of Free Fatty Acid
Authors: S Rahmah KR , Ramdani SS , Kurniasih N , Meilawati A , Wahlanto P , Yusuf AL
Published: August 2019

Vegetable oil used as cooking oil was extracted from fruits of plants. vegetable oil is known as a source energy for human body and an important component for dissolving fat soluble vitamins such as vitamin A, D, E and K . Bulk palm cooking oil sold in many markets does not meet quality standards due to damage that can occur during processing such as heating and during storage. the quality of cooking oil is determined by odor, color, water content, peroxide number, iodine number and free fatty acid content. Chemical analysis for qulality test of palm coking oil include peroxide value, iodin value, and free fatty acid level by the titration method. This study aimed to determined peroxide value, iodine value and free fatty acid level the bulk palm cooking purchesed in traditional market, Banjar, West Java. The result of the reseach showed that peroxide value of bulk palm cooking oil, were obtained by AOAC analytical method was 3,33 mekO2/kg, iodin value 2,38 mg/100g, and free fatty acid level 0,037 mg NaOH/g. Based on the result, the bulk palm cooking oile saled in the Banjar market still under the quality according to SNI standards.
Effect of Ethanol Extract Sonchus arvensis Linn Leaf on BUN, SCr, ALT, AST in Healthy Male Albino mice (Rattus norvegicus).
Authors: Harun N , Indriastuti M , Fatimah A , Ega D , Safitri Y E , Rosmayanti M
Published: August 2019

Sonchus leaves are traditional plants whose effects have been widely studied including immunostimulants and diuretics. Both of these effects have benefits for maintaining health and treating diseases. The purpose of this study was to determine the effect of ethanol extract sonchus on levels of BUN, SCr, ALT, AST and acute toxic effects on healthy male albino mice after being extracted 1 time a day for 14 days. Each group of test animals was given a dose of 100 mg/KgBW (n=9) for the BUN, SCr, ALT, AST test and every 10 healthy male albino mice (n=40) with a dose of 700, 1400, 2800, 5600 (mg/KgBW) for acute toxicity test. Blood sampling performed on day 0 and day 14 (BUN, SCr, ALT, AST) and toxicity tests were observed for 14 days. The data obtained were statistically tested with Shapiro Wilk normality test, or Wilcoxon T test and one way Annova or Friedman test and calculated LD50. Statistics show that there were no significant differences (p>0.005) in the administration of extracts between day 0 and day 14 of BUN, SCr, and AST levels but for ALT had significant difference (p<0.005). The results of this study concluded that the ethanol extract of sonchus leaves did not affect the levels of BUN, SCr, AST but neither for ALT on healthy male albino mice.
Non-orthogonal bases for quantum metrology
Authors: Genoni Marco G , Tufarelli Tommaso
Published: August 2019

Many quantum statistical models are most conveniently formulated in terms of non-orthogonal bases. This is the case, for example, when mixtures and superpositions of coherent states are involved. In these instances, we show that the analytical evaluation of the quantum Fisher information matrix may be greatly simplified by avoiding both the diagonalization of the density matrix and the orthogonalization of the basis. The key ingredient in our method is the Gramian matrix (i.e. the matrix of scalar products between basis elements), which may be interpreted as a metric tensor for index contraction. As an application, we derive novel analytical results for several estimation problems involving noisy Schrödinger cat states.
Economic Analysis of a Building Integrated Photovoltaic System Without and With Energy Storage
Authors: Sharma Pooja , Kolhe Mohan , Sharma Arvind
Published: August 2019

A grid-connected solar photovoltaic (PV) system with energy storage can help in overcoming the intermittency as well as in reducing the peak demand on the network. It also benefits in electricity bills savings. In this context, it is significant to examine the appropriate use of local energy storage (i.e. battery) connected with PV for reducing the energy supply from the grid, and also its contribution in peak demand reduction with more emphasis on reduction in annual consumer electricity bill. In this paper, a techno-economic analysis of Building Integrated Photovoltaic (BIPV) system with energy storage has been presented. A typical South Norwegian house, installed with PV, has been considered for identifying annual electricity bill savings as well as economic indicators by deploying appropriate battery capacity. It has been observed that BIPV with energy storage can be beneficial to the consumer both economically and technically, providing incentives for both consumers and investors. The time-wise limits on electricity consumption from the grid supply can also help to make the BIPV house with energy storage more economically attractive as well as near zero energy building.
Precipitation of γ′ Phase of DD6 at Unequal Service Temperatures
Authors: Huang Yao , Li Ning , Zhang Hui , Han Renheng , Zhao Chengzhi , Zhang Hexin
Published: August 2019

In this paper, the DD6 alloys after complete heat treatment were heat-treated at 900, 1000, 1100, 1200, 1300 °C for 1 h, then was air cooled. Microstructures treated by different temperatures were investigationed by OM and FESEM. The microstructures evolution of alloys were estimat using JMatPro software and Image-Pro Plus. Conclusion illustrates the size of γ′ phase increases gradually after the DD6 alloy heat-treated at 900, 1000, 1100 and 1200 °C for 1 h, and the size reaches the maximum after heat-treated at 1200 °C. Most of the γ′ phase dissolves and then precipitate the irregular small γ′ phase, about 0.20 nm after preservation at 1300 °C. The size distribution of the γ′ phase turned into more and more uniform, and the best distribution state is achieved after preservation at 1100 °C; The matrix channel of the microstructure of DD6 widens gradually with temperatures increasing and reaches a maximum value at 1100 °C, about 65 nm. The matrix channel is narrowed gradually, and the most part of γ′ phase has serrated γ/γ ′ phase surface after heat treatment at 1200 °C. After heat preservation at 900 °C, volume fraction of γ′ increases contrast that after complete heat-treatment; after heat-treatment at temperature degree of 1000-1200 °C, γ′ volume fraction decreases gradually; γ′ phase volume fraction increases again at 1300 °C. The different microstructure characteristics of DD6 after heat-treatment at unequal temperatures are obtained, indicating that the using temperature has a significant effect on the microstructure of DD6 alloy.
3D Printer parameters analysis for PCL/PLA filament wire using Design of Experiment (DOE)
Authors: Abdul Haq Reazul Haq , Faizan Marwah Omar Mohd , Abdol Rahman Mohd Nasrull , Haw Ho Fu , Abdullah Haslina , Ahmad Said
Published: August 2019

Fabrication of medical implant using composite Polycaprolactone (PCL) / Polylactic Acid (PLA) through a process of fused filament fabrication (FFF) is the future of medical field. In this study the capabilities of FFF process and optimization of the Parameter was investigated to achieve the 20mm × 20mm × 10mm dimensional accuracy of printed composite material. Design of experiment using technique full factorial with two level design is used to study the interaction of factor which is print temperature (A), height of deposition (B), print speed (C) and travel speed (D). By using DOE, the total 20 run include with 4 center point was investigated by extruding the composite material using 3D printer. The dimension accuracy is tested using flexible measuring machine. From the sample, the ANOVA analysis of variance is divided into 3 responses, length, width and height. Factor model A, C and BD show the significant effect on length and for width response, factor model effected the dimensional accuracy is A, C, AC, and AD. Meanwhile for height respond only factor model A and C show the significant effect on the respond. Based on the analysis, one optimum parameter run is selected among ten of the suggested run. The optimum parameter value consists of 136°C print temperature, 0.12mm deposition of height, 20mm/s printing speed and 22mm/s travel speed. The confirmation run analysis this optimum parameter shows the precise dimension with average margin error below that 15% for length, width and height respond.
Effect of Filler Loading on Properties of Polyurethane/Clay Composites
Authors: Arifin’ A M T , Supri A G , Hassan M F , Rahman M N A , Haq R H A , Taib I , Adzila S
Published: August 2019

This paper discusses about the effected of filler loading on properties of polyurethane/clay composites. Polyurethanes materials have been developed strongly in the world, proving it to be one of the most versatile polymers. Segmented polyurethanes are very versatile materials, which can display properties ranging from very soft thermoset elastomer to strong. The objective of this study is to investigate the behaviour of polyurethane/clay composites, in term of strength, swelling behaviour and morphology properties. Polyurethanes based on diisocyanate molecule with diol were prepared by stoichiometric reaction 1:1 and 1:2 ratios of diphenylmethane diisocyanate (MDI) and polyethylene glaycol (PEG 400). In both ratios, 2%, 4%, 6%, 8%, 10% and 20% of clay were added as filler loading. Polyethylene glaycol (PEG 400) and clay are mixed together to become homogenous around 300 r.p.m. at room temperature for 10 minutes. After that, the solutions mixture with diphenylmethane diisocyanate (MDI) and are mixed again for 15 minutes around 300 rpm. The effect of adding clay was assessed by several testing method; compression test, swelling behaviors, spectroscopy infrared (FTIR) study and scanning electron microscope. Compression test result shows, with increasing percent of clay, the strength are increase for both of the ratio, 1:1 and 1:2. For swelling behaviors, from swelling index, result 1:1 ratio is better than 1:2 ratio. From infrared spectroscopy observation, the clay structure improved the hard segment of polyurethanes/clay composites. SEM micrograph of surface polyurethanes/clay composites observation shows, the structure of cell is homogenous; it is proved that chemical solution and clay are mixed together.
Line balancing synchronization in powder coating workstation: A metal industry case study
Authors: Ho F. H. , S. Abu M. Al-Haqeem Chee , Woo Y. L.
Published: August 2019

In powder coating industry, product over-cured and poor surface finishing are both utmost issues faced by the manufacturer. One of the reasons is due to the poor synchronization between powder coating conveyor speed, number of operators in loading and unloading bay, and variety of products to be powder coated. This study is conducted in a metal industry company located at Johor with powder coating facility. Raw data were collected through documentation and observation such as complete operation activities of the powder coating process, the actual layout of the powder coating workstation. The raw data were then converted into simulation scenario using Arena software to determine the configuration between conveyor speed, number of operator, and consideration of three variants of product (small, medium, big) in order to achieve best synchronization. Next, the obtained findings were validated with the actual industry data. A balanced synchronized matrix is developed in the end of this study which could contribute to enable better understanding of line balancing in powder coating process. Perhaps the findings could be utilized to assist the practitioner in operation planning and productivity improvement
Microbial study of pH sensitive starch based film using agar diffusion method (zone inhibition assay)
Authors: Khairuddin Nozieana , Muhamad Ida Idayu , Abdul Rahman Wan Aizan Wan , Mobin Siddique Bazlul
Published: August 2019

Active and smart packaging is a promising form of food packaging that offers a great economical potential due to consumer demand for a packaging that accommodate a hectic way of life. An antimicrobial film with pH colour indicator (pHF) can be made by incorporating suitable antimicrobial (AM) agent and colour indicator into food package matrices whilst applying a bio switch concept to inhibit the pathogenic microorganisms and respond automatically to changes (external stimuli) in the environment. The present work aimed to study the developed formulation of hydroxyethylcellulose (HEC)/wheat-starch based pHF film in which the active compound, thymol (0.5, 1, 1.5, 2, and 2.5% w/w) and 50:50% w/w bromothymol blue and methyl red (as the colour indicator) against microbial growth. A solution casting method was used in the film preparation while thymol and colourant were incorporated prior to casting. The effect of thymol showed a range of microbial inhibition zones of 16.3 - 26.4% and 22.1 - 39.9% towards E. coli and B. subtilis, respectively. Whilst, a lower inhibition zone of 0.4 - 5.1% was demonstrated for fungus A. niger.
Preparation of a graphene oxide membrane for air purification
Authors: Zou Weiwu , Gu Baoshan , Sun Shiqing , Wang Shidong , Li Xin , Zhao Haoqi , Yang Peiyan
Published: August 2019

Environmental issues such as particulate matter (PM) have become more and more serious because of their detrimental effects on human health. The development of an effective way to remove PM is in high demand. In this study, a graphene oxide (GO) membrane with a large specific surface area and a continuous pore structure was prepared via a coating method. The morphology, composition and structure of the GO membrane were characterized by scanning electron microscopy (SEM), an energy dispersive spectrometer (EDS), X-ray diffraction (XRD), FT-IR spectra, X-ray photoelectron spectra (XPS) and Raman spectroscopy. The removal efficiency for PM and the influence of pollutant concentration and wind velocity on the GO membrane were studied. As a result, when the wind velocity was 0.1 m s−1, the PM2.5 removal efficiency of the GO membrane exhibited the highest efficiency (99.46%) with a low pressure drop (7 Pa) and a high quality factor (QF) of 0.75 Pa−1. The GO membrane maintained a high adsorption performance for a long time. The GO membrane removal efficiency was more significant when the import concentration was higher and the wind velocity was lower. In particular, SEM and EDS clearly revealed that the PM2.5 was successfully captured by the GO membrane. The preparation of the GO membrane involves a simple and pollution-free process, which provides a new way to deal with air pollution.
Fibre based hyperentanglement generation for dense wavelength division multiplexing
Authors: Vergyris Panagiotis , Mazeas Florent , Gouzien Elie , Labonté Laurent , Alibart Olivier , Tanzilli Sébastien , Kaiser Florian
Published: August 2019

Entanglement is a key resource in quantum information science and associated emerging technologies. Photonic systems offer a large range of exploitable entanglement degrees of freedom (DOF) such as frequency, time, polarization, and spatial modes. Hyperentangled photons exploit multiple DOF simultaneously to enhance the performance of quantum information protocols. Here, we report a fully guided-wave approach for generating polarization and energy-time hyperentangled photons at telecom wavelengths. Moreover, by demultiplexing the broadband emission spectrum of the source into five standard telecom channel pairs, we demonstrate compliance with fibre network standards and improve the effective bit rate capacity of the quantum channel up to one order of magnitude. In all channel pairs, we observe a violation of a generalised Bell inequality by more than 27 standard deviations, underlining the relevance of our approach.
Spectral and optical properties of Ag3Au(Se2,Te2) and dark matter detection
Authors: Sánchez-Martínez M-Á , Robredo I , Bidaurrazaga A , Bergara A , Juan F de , Grushin A G , Vergniory M G
Published: August 2019

In this work we study the electronic structure of

Ag

3

AuSe

2

and

Ag

3

AuTe

2

, two chiral insulators whose gap can be tuned through small changes in the lattice parameter by applying hydrostatic pressure or choosing different growth protocols. Based on first principles calculations we compute their band structure for different values of the lattice parameters and show that while

Ag

3

AuSe

2

retains its direct narrow gap at the Γ point,

Ag

3

AuTe

2

can turn into a metal. Focusing on

Ag

3

AuSe

2

we derive a low energy model around Γ using group theory, which we use to calculate the optical conductivity for different values of the lattice constant. We discuss our results in the context of detection of light dark matter particles, which have masses of the order of a keV, and conclude that

Ag

3

AuSe

2

satisfies three important requirements for a suitable detector: small Fermi velocities, meV band gap, and low photon screening. Our work motivates the growth of high-quality and large samples of

Ag

3

AuSe

2

to be used as target materials in dark matter detectors.