bluuebunny/crossref_metadata_2025_split huggingface dataset:
Influence of occupational health and safety culture implementation to productivity of work to heavy equipment worker at PT. X Surabaya
Authors: Ayu F , Karya D F , Rhomadhoni M N 
Published: May 2021

Abstract
Labor is one of the assets which determines the quality of the company. Worker can exposure to potential hazard from the work environment so that it can decrease productivity of worker. Data from ILO (2010) show that more than 2 million people/years died due to work accidents and occupational disease. At Indonesia showed every 7 second work accident was occurs. If this happen continuously, it will reduce the productivity of workers and will have an impact to job performance. Heavy Equipment Workers at Port of PT.X is one of the high risk job, therefore this company must arrange work program that support the Occupational Health and Safety(OHS) implementation at workplace through Safety Culture Implementation. The aim of this research is to analyze the influence of occupational health and safety culture implementation to productivity of work on Heavy Equipment Worker at PT.X Surabaya with using cross sectional study. Total samples of 52 workers, taken by the total sampling method. Data related to respondent characteristics like productivity of worker, safety culture implementation, OHS Policy, OHS Program, working behavior obtained from direct observation to the field and interviews with workers. Statistical test result using multiple linear regression test showed that the effect of OHS culture implementation (with variabel OHS Policy, OHS Program and Working behavior) influence 79,6% to Productivity of Work to Heavy Equipment Worker at PT.X Surabaya with p-value 0,000<0,05. Because all worker know that company has applied the OHS management, this can be known from the interviews result and direct inspections in the field that all workes was working with safe action, because their know that their work has a high risk of potential hazard and then before entering the workplace, HSE Supervisor always provide safety briefing to all operator. Recommended for the company to commit to improve OHS Management and OHS Program in the company and all OHS Policy and OHS Program should be socialized and carried out routinely and continuosly. For all worker should be more disciplined to using PPE and before work must reading the Standard Operational Procedure (SOP) before starting the work.
The development of textbook based on brain-based learning (BBL) in material organization system of life for the junior high school science
Authors: Kusumaningrum V , Waluyo J , Prihatin J , Ihsanullah  
Published: May 2021

Abstract
This study aims to develop textbooks on Brain-Based Learning in Materials Organization of Life for the Junior High School. 92.8% of 70 students from Tenth Junior High School said need an interesting picture book, 92.8% of 70 students require illustrative images that support the material, and 89.9% said need a book that helps remember long-term. The purpose of this study is to obtain a development process and textbook based on Brain-Based Learning (BBL) that Effectiveness for The Students Junior High School in science learning. Method tools are using mneumonic, comic strips, songs and images. This research was conducted in MTs Nurul Huda Banyuwangi with research subjects of class VII A in the academic year 2019/2020. The type of this research is (research and development), using 4-D model Thiagarajan, but only used 3 stages define, design, and develop. The technique of collecting data is by collecting test methods, teachers’ interview, questionnaire for teachers and students, and observation. The data analysis technique consists of effectiveness analysis by using N-gain and learning retention. The results shows that 31 students experienced an increase in learning outcomes from the low to the good category. Effectiveness can be seen from the difference in the pre-test and post-test in the N-gain test with 0.77 which indicates a high category. Retention results were obtained based on analysis of learning retention at 93.25 with a high category.
The effectiveness of madurese culture wisdom on science learning sound material in primary school students’ critical thinking skills
Authors: Wirawan H F , Suratno  , Suparti  , Dafik  , Hobri  
Published: May 2021

Abstract
Lack of insertion or understanding of local culture and traditions in classroom learning will cause students to appreciate the existing culture and grow in their environment. This research is a development research. The stages that has been through to make a valid, practical, and effective calculus learning tool are: 1) defining stage, 2) planning stage, and 3) developing stage. Trials that had been done are expert trials/expert validation, limited trials, and field trials. Field trials were conducted at SD Negeri 5 Patokan in two classes, 4A and 4B class. The research instrumentswere validation sheet, teacher’s evaluation sheet, student’s evaluation sheet, observation sheet for learning implementation, test of learning outcomes, and questionnaire for independence student’s learning. Validation and practicality data analysis are done by converting quantitative data in the form of an assessment score into qualitative data in the form of a standard scale of five. Analysis of effectiveness data is done by determining the percentage of mastery learning and student learning independence. Validity and practicality are shown by the results of expert validation which show a value of 4.46; while the effectiveness of learning is indicated by calculating the normal gain which shows 48.8% students get an effective score; character values in students show good categories, and student responses to learning are positive with 96% of students assessing positively towards the implementation of learning. It can be concluded that 1) developing science teaching materials based on Madura culture (sound material) for class 4 belongs to valid category, 2) developing science teaching materials based on Madura culture (sound material) for class 4 belongs topractical category and 3) developing science teaching materials based on Madura culture (sound material) for class 4 belongs toeffective category.
Developing teaching materials of indonesian for speakers of other languages based on wetland environment
Authors: Amelia R , Chandra N E 
Published: May 2021

Abstract
Universitas Lambung Mangkurat, as one of the universities in South Kalimantan, has a vision “ULM is as a leading and competitive university in the field of wetland environment.” Thus, the possibility of introducing local wisdom is one of the efforts to think globally act locally. Therefore, the availability of valid and effective teaching materials is needed as an effort to increase students’ understanding and caring attitude about the contextual wetland environment. This research is a research and development on developing BIPA (Indonesian for Speakers of Other Languages) book based on wetland environment. The development steps were adapted into seven simpler main steps. These steps are needs assessment which was done to 9 international students at ULM. The instruments used in this study were a questionnaire and interview on the needs analysis and a questionnaire on the try-out. The data was analyzed qualitatively and quantitatively. Then, the materials were developed. The book covers six units. The units are Tinggal di Banjarmasin, Budaya Sungai di Banjarmasin, Hutan Bakau di Kalimantan Selatan, Bekantan dan Pasar Terapung. Each unit has seven activities covering the listening, speaking, reading, and writing skills. Going further to validation, the product was validated by two validators. It was then revised, tried out, revised again, and published. This book is expected to contribute to enrich students’ knowledge on wetland environment and level up students’ mastery of Indonesian.
Influence of composition and compaction pressure on the physical quality of wood residue and bottom ash mixture briquettes
Authors: Amrullah A , Irawansyah H , Syarif A , Anshari M H 
Published: May 2021

Abstract
Woody biomass is briquette-densified to enhance its physical and mechanical properties during handling and storage. However, Limited study on the physical consistency of briquettes made from wood biomass and bottom ash blends has been carried out. The bottom ash used in this study is a residue from burning coal for the powerplant. The physical quality was evaluated for three different compositions (70:30, 50:50, and 30:70). The piston press type machine (laboratory scale) was employed to produce a briquette. This work aims to evaluated the effect of mixing ratio (wood residue and bottom ash) and compaction pressure on the physical quality (water content, ash content, VM, calorific value) and combustion behavior. The compaction pressure was varied between 100 kg/cm 2 and 150 kg/cm 2. The result revealed that the compaction pressure affected the physical quality of the briquette. Lower moisture content (MC), ash content (AC), and calorific value (CV) were obtained at the higher compaction pressure. The moisture content of 1.6% was better for the wood residue and bottom ash mixture’s compaction pressure. The calorific value of briquette ranged from 5200 kal/g to 5700 kal/g. In conclusion, the combination of low-cost and abundant forest biomass mixed bottom ash available with wood biomass could lead to better physical quality and help meet the demand for the briquette in the future.
Data acquisition system in measuring carbon dioxide, humidity and temperature: design and fabrication
Authors: Sugriwan I , Ramdhani A S , Fahrudin A E , Suryajaya  
Published: May 2021

Abstract
This research aims at designing and fabricating data acquisition systems in measuring concentration of carbon dioxide, relative humidity (RH) and temperatur (T) of peatland which were trapped by closed-chamber measurement. Carbon dioxide was sensed by TGS4160 modul sensor while relative humidity and temperature were detected by SHT11 modul sensor. TGS4160 is carbon dioxide gas sensor that operated together with voltage follower and connected with ATMega8535 microcontroller via port A.0. SHT11 is a modul sensor that detect two parameters simultanously, relative humidity and temperature, that operated with fully calibrated and digital output. SHT11 is connected to ATMega8535 via port B.0 for data and port B.1 for clock with two wire interface mode. The ATMega8535 microcontroller is single chip to catch input signal from sensors, to compute the characteristic equation of sensor and to send measuring data to LCD 16×2 character as display unit which was programmed by basic compiler. The measuring devices interfaced with personal computer via universal serial bus to formed data acquisition systems. In personal computer, the data measurement were displayed on monitor screen that was developed by delphi. The data result were recorded and stored in excell and data base.
Students’ self-regulation learning ability in learning algebraic forms in wetland context with the help of interactive multimedia
Authors: Sukmawati R A , Ridhani M , Adini M H , Pramita M , Sari D P 
Published: May 2021

Abstract
One branch of mathematics that is very useful in solving problems is algebra. In fact, junior high school students still face difficulties in learning algebra. This study aimed to develop interactive multimedia on algebraic-form material with a wetland context, to describe student self-regulation learning (SRL) abilities in learning algebraic forms using interactive multimedia with wetland contexts, and to analyse the relationship between SRL ability with student learning outcomes after learning on algebraic form material in wetland context with interactive multimedia assistance. This research was a development research using the ADDIE method. It was tested in small groups of seventh grade students of SMP Negeri 9 Banjarmasin. The data collection techniques used tests and questionnaires. The data analysis technique used descriptive statistics and simple linear regression. The results showed that interactive multimedia on wetland context-algebraic form material was valid and could be used in learning algebraic forms in seventh grade. The trial results showed that the average student learning outcomes were in the sufficient category and as many as 80.0 percent of students had reached the KKM determined by the school. Student’s SRL ability was in the medium category, and there is no influence from SRL on student learning outcomes. The further research is needed in large groups to analyse how the influence of students’ SRL skills on learning outcomes in interactive multimedia assisted learning.
Flowering and fruiting of Sarcotheca macrophylla Bl, an endemic species of Borneo and implication for conservation
Authors: Astuti I P , Nurfadilah S , Rinandio D S , Suratman M 
Published: May 2021

Abstract

Sarcotheca macrophylla (Oxalidaceae) is an endemic species of Borneo. Little is known about the flowering and fruiting of this endemic species. The present study aimed to investigate the flowering and fruiting of S. macrophylla in terms of the first-time flowering, and morphology of the flowers, fruits, and seeds. Morphology of flowers, fruits, and seeds was also recorded and documented. The results showed that the first-time flowering of S. macrophylla occurred at 5 months to 16 months after seed germination with the plant height ranged from 13 to 23cm. These results showed that the first-time flowering of S. macrophylla occured at seedling stage, indicating early reproduction of the species. Two morphs of S. macrophylla (short-styled plants and long-styled plants) confirmed the heterostylous syndrome (different styly length) which is common in Oxalidaceae. Heterostylous is often associated with self-incompatibility which is commonly linked to the low seed set in this plant family. The present study has implication in the conservation of this endemic species, as the species produced low seed set associated with heterostylous syndrome of the flowers. Efforts to increase the seed set to support regeneration and survival of this endemic species are required.
The role of microbes in organic material decomposition and formation of compost bacterial communities
Authors: Simarmata R , Widowati T , Nurjanah L , Nuriyanah  , Lekatompessy S J R 
Published: May 2021

Abstract
The application of microbial decomposers and bio-stimulant into agriculture wastes influence the abundance of microorganisms and their biological diversity of the compost. The study was conducted to determine the role of microbial in the decomposition of agricultural wastes that produces compost and its effect on the diversity and function of microbes that inhabited the compost product. Agricultural wastes used straw, leaves and grass from the Cibinong Science Center-Botanical Garden. Decomposer microbes used fungi (Trichoderma), and bacteria (Azospirillum brasilense and Agrobacterium sp.). The composting process was conducted anaerobically and the compost beds were reversed every 7 days. The diversity and function of inhabiting microbes resulted from the composting process was determined and identified by conducting microbial isolation and 16S rRNA genes identification. The ability of the microbes as decomposers was also analyzed. The results showed that the genus Bacillus tended to dominate. The microbial consortia have a high enzyme activity to degrade material waste agriculture. Of the three sources of compost used, the grass produced a better compost, forming a diverse and beneficial bacterial community. Therefore, it can be stated that the use of microbial decomposers for composting the agriculture wastes is an appropriate method for forming the beneficial microbial ecosystems.
Evaluation of pollen viability, seed viability and vigor of two Bt rice lines Y7 and P8 carrying cry1B::cry1Aa fusion genes
Authors: Rahmawati S , Zahra F , Nugroho S 
Published: May 2021

Abstract
Pollen viability, seed viability and seed vigor of two BT lines Y7 and P8 expressing Cry1B-Cry1Aa fusion proteins were assessed to determine if these two lines equivalence to its wild type rice cv Rojolele. Pollen viability was estimated using in vitro pollen germination methods. Pollen were collected at 0, 1, and 2h after shedding. Both seed viability and vigor were observed using rolled paper test methods at incubation temperature of 30, 33, 37, and 42 °C. The results showed that there was no significant difference between pollen viability of BT lines and Rojolele wild type. The highest pollen viability was obtained when the pollen grown shortly after anthesis (0h). Seed viability and vigor were significantly affected by the incubation temperature. The highest seed viability and vigor were obtained at incubation temperature of 33 °C. Both seed viability and vigor were decreased significantly when the seeds grown at higher temperature (37 °C). However, seed viability and vigor of BT lines were not significantly difference from its wild type, except for the fresh weight parameters. Thus, based on these observations, BT lines were agronomically equivalence to wild type rice cv Rojolele. This data is important for the environmental risk assessment.
Periplasmic expression of EGFRvIII extracellular domain as a fusion protein in Escherichia coli NiCo21(DE3)
Authors: Dewi K S , Aminah  , Fuad A M 
Published: May 2021

Abstract
Epidermal growth factor receptor variant III is a mutant variant of EGFR that has a deletion on its DNA encoding extracellular ligan-binding domain. EGFRvIII is only found in cancer cells and not in normal cells, make it an ideal target as a biomarker for antibody-based cancer therapy. This study performed the expression and characterization of EGFRvIII extracellular domain conjugated with a blue fluorescent protein (BFP) as a fusion protein in Escherichia coli periplasmic space. Endoxylanase signal peptide was employed to guide the recombinant protein through the membrane. IPTG as inducer was added into expression medium with various concentrations of 0; 0.1; 0.25; 0.5; 1 mM, followed by periplasmic extraction using the hypertonic solution. Total proteins and periplasmic proteins were characterized using SDS-PAGE and slot blot analyses. Extracellular domain of EGFRvIII-BFP fusion protein was detected using confocal fluorescence microscopy. This study showed that the ∼43 kDa target protein was successfully expressed on E. coli NiCo21(DE3) periplasmic space with optimum IPTG concentration of 0.1 mM and and showed a blue fluorescence color under the microscope..
Study on synthesis and road performance of light-colored resin modified asphalt
Authors: Zhang Zhao , Huang Zhouyi , Zhou Wei , Xu Renhua , Xu Jianhui , Liu Yugui 
Published: May 2021

Abstract
To realize the color functionalization of road paving, this paper developed a light-colored resin modified asphalt, which can be added with toner to adjust different colors to realize the color paving of asphalt mixture. Fourier infrared spectroscopy (FT-IR) was used to analyze the difference between functional group composition of light-colored asphalt and 70# petroleum asphalt and to compare the conventional performance and road performance of light-colored asphalt with I-D grade modified asphalt. The road performance mainly includes high temperature performance, water stability performance and anti-skid performance. The test results showed that the light-colored asphalt and 70# petroleum asphalt had similar functional group composition, and the technical indicators of the light-colored asphalt could meet the requirements of I-D grade modified asphalt; the three road performances of the light-colored asphalt mixture met the specification requirements, which were even more excellent than the I-D grade modified asphalt mixture, indicating that the light-colored resin modified asphalt synthesized in this paper can meet the application of road engineering. Meanwhile, the light-colored resin modified asphalt has less smoke, lower carbon emissions, and superior performance than petroleum asphalt during use, which is beneficial to the sustainable development of road engineering.
Technical analysis of improving sand body penetration rate in horizontal well
Authors: Zhou Yongjie 
Published: May 2021

Abstract
Because the measurement data of horizontal well lags behind the actual position of bit, accurate geological guidance is the key to improve the rate of sand body drilling. Taking the thin and poor reservoir sand body at the edge of a development zone as an example, this paper introduces the horizontal well geosteering technology in detail, five techniques have been developed, including marker layer selection, seismic software aided guidance, target identification, lwd data analysis and rate of penetration control. The technique has achieved high sand body penetration rate in 7 horizontal wells. This technology provides a favorable guarantee for the effective development of thin and poor reservoirs in horizontal wells.
Low Carbon Policy and Sustainable Development of Environment of the Indigenous Ceremonial Holiday in Taitung County, Taiwan
Authors: Pan Shihui , Xiao Jucheng , Zhu Ziyi 
Published: May 2021

Abstract
Low-carbon tourism is an emerging topic that the tourism industry and academia have paid attention to in recent years. In the past, many researchers have designed low-carbon tourism package itinerary from the point of view of practitioners, and rarely used the view of policy operation to guide self-service tourists how to engage in energy-saving and carbon reduction behaviour in tourism. The purpose of this study is to analyse the government departments in Taitung County, Taiwan as a case study on how to guide and promote the activities of participants in energy conservation and carbon reduction during ceremonial holiday. This study draws preliminary conclusions that the key to the success of low-carbon tourism lies in the specific implementation of government policies. In addition, the key to success is that people can abide by the law and government policies. There is also communication with indigenous tribes about low-carbon practices, and the use of mass media and school to promote this policy.
Study on Pyrolysis Characteristics of Rubber Wood Based by TG and Py-GC/MS
Authors: Liu Liang , Hou Qinjia , Qing Mengxia , Wang Xun , Liu Zenghui , Long Yutian 
Published: May 2021

Abstract
In order to explore the formation mechanism of pyrolysis products of rubber wood, the pyrolysis characteristics of rubber wood at different heating rates were investigated by thermogravimetric analyzer (TG), and the pyrolysis behavior and distribution of pyrolysis products of rubber wood at 400, 600 and 800 °C were further analyzed by py GC / MS. The results showed that with the increase of heating rate, the heat transfer hysteresis of rubber wood pyrolysis occurred. The pyrolysis products of rubber wood mainly include acids, phenols, ketones, aldehydes and aromatic hydrocarbons. At 400 °C, the yields of phenols and aldehydes reach the maximum. At 600 °C, the yields of toluene, ethylbenzene and olefins increase, while the yields of phenols and aldehydes decrease. At 800 °C, the yields of phenols and aldehydes increase slightly. At the same time, the contents of polycyclic aromatic hydrocarbons increase with the increase of temperature, and reach the maximum at this time.