bluuebunny/crossref_metadata_2025_split huggingface dataset:
Relationship of work position with complaints of musculoskeletal disoeders (MSDs) in cracker industrial worker at Kedungdoro village, Sidoarjo
Authors: Ayu F , Ratriwardhani R A 
Published: May 2021

Abstract
Musculoskeletal complaints are the most frequently reported complaints to workers. Cracker industry workers in Kedungrejo Village,Sidoarjo sit for more than 6 hours doing repetitive movements which are at risk of developing complaints of Musculoskeletal Disorders (MSDs). The aims of this research was to analyze the relationship between work position with complaints of MSDs in cracker industry workers in Kedungrejo village,Sidoarjo.The type of this research is an analytical survey with a cross-sectional study. The research population was all cracker industry workers at village Kedungrejo. The research sample of 46 respondents was taken by simple random sampling technique. Data related to respondent characteristics like work position and MSDs complaint obtained from direct observation to the field with using Rapid Upper Limb Assessment (RULA) assessment and interviews with workers using Nordic Body Map (NBM). Data analysis using SPSS with statistical test rank spearmen.Statistical test results showed that almost half of the respondents (43.5%) had complaints of MSDs at a very high level and most (60.9%) had work position with a low risk category. The results showed that there was a significant relationship between work position and MSDs complaints in cracker industry workers with a value of 0.033 < 0.05 in the test rank spearmen. The strength of the relationship between variables is seen from the correlation coefficient with a result of 0.315 which means weak. The direction of correlation is positive, which means that poor work position can increase MSDs complaints.The conclusion is research that there is a significant relationship between work attitudes and MSDs complaints in cracker industry workers. Suggestions for the cracker industry to replace workers’ chairs with ergonomic chairs and for cracker industry workers to stretch before working and consuming water on the sidelines of work.
Analysis of Gluten Free Casein Free Compliance (GFCF) Diet in Terms of the Incidence of Gastroenteritis in Children with Autism Spectrum Using Rank Spearman Test
Authors: Firdaus  , Herlambang T , Afifa L N , Inawati P A , Muhith A 
Published: May 2021

Abstract
one problem that is often experienced by people with autism is the provision of food and proper nutrition in children with autism. Children with autism spectrum disorder (ASD) are at risk of having a digestive tract disorder (gastroentritis), they are at a greater risk diarrhea.The last few years autistic sufferers in Indonesia have increased, around 12,800 children. Autistic children have a high chance of experiencing gastroentritis, if not treated seriously it will cause dehydration even to death. Therefore, this study was to analyze the relationship of adherence to a gluten free casein free diet with the incidence of gastroenteritis on autistic children. events was performed using the management of a sick toddler. The results of the study after Rank Spearman statistical test ρ= 0.034 <α=0.05 indicates that there is a relationship between the compliance of the gluten free casein free diet and the incidence of gastroenteritis on autistic children. Compliance with gluten free casein free diets makes improvements to the digestive system in autistic children.
Dissemination model of understanding climate change using knowledge management systems
Authors: Sardjono W , Selviyanti E , Mukhlis M 
Published: May 2021

Abstract
Climate change becomes a very complex and multidimensional issue, climate change will continue to be an interesting issue to study in relation to local policies, because besides climate change has global to local impacts, climate change can directly affect the condition of the natural environment and human behavior. The presentation in this paper aims to provide an overview of how the socialization of climate change issues carried out using information systems and technology can be successful by referring to knowledge development with data formed based on community perspectives. Factor analysis method is used to find the success factors of socialization in the face of climate change, then the regression analysis method is used to build a model of a number of variables that are formed from the analysis of output factors. The results of the study provide a number of new factors that can be represented as variables of public awareness of climate change, the process of socializing climate change and global warming, the availability of information systems and technology, and the management of knowledge management about climate change. The conclusion obtained from this research is that the momentum of the industrial revolution of the 4.0 era can be utilized to support the process of climate change socialization that is measured independently.
Groundwater quality : comparing alluvial plain and tertiary volcanic in tropical region
Authors: Elfiani V , Mitasari M , Risdarani Y , Ardiyanto G G , Kurnianto F A 
Published: May 2021

Abstract
Sustainable water resources are the most important issue related to the effects of land use change. However, aspects of geomorphology and lithology have not been studied by researchers before. This study aims to analyze the characteristics of groundwater systems associated with lithology and geomorphology. The method used in this study was a survey. Data retrieval is done during the long dry season (tropical region), and the normal dry season in regions with different land forms and lithology. Analyze the data by comparing groundwater samples with physical water quality. The results showed that in tertiary volcano areas there is a decrease in the quality of groundwater physically during the long dry season, while in alluvial plains there is no physical decrease in water quality. The decrease in water quality occurs during the long dry season. The decrease in groundwater quality is influenced by the dry season, the litology of quarland volcanic rocks, and the shape of tertiary volcanic landform.
Stabilization of soft soil using industrial waste
Authors: Pratiwi A Y , Prasetia I , Perina Y A , Effendi R 
Published: May 2021

Abstract
This study focuses on the soft soil stabilization using different combination of fly ash and cement admixture. The fly ash proportion varies from 10%, 15%, and 20% while keeping the proportion of cement constant at 10%. CBR test result is used as the soil improvement parameter with curing time for seven days. Test results indicate an increase of CBR with increase of fly ash and cement admixture to soft soil. The maximum CBR is at fly ash 20% and cement 10% with 49.36%. The swelling value of soft soil decreased with increase of fly ash and cement admixtures percentage. The swelling potential can be reduced to be less than 5%.
The potential for peatland villages to prevent fire: Case study of Tumbang Nusa Village Central Kalimantan
Authors: Akbar A , Adriani S , Priyanto E 
Published: May 2021

Abstract
Peatland fires have become a global concern due to the negative impacts of smoke and greenhouse gas emissions produced which can reach ten times than from fires on mineral land. The village of Tumbang Nusa has been known as a fire resistant village in the Central Kalimantan peatland. Fire is always triggered by the people who are accustomed to burning their lands uncontrollably. Community empowerment research to prevent fires is therefore very important. The study of resource potential in the village has been carried out through observation and interviews. The results of the study show that rural communities have the potential for natural resources, human resources, and some infrastructure that can be developed as a basis for community empowerment efforts that will reduce the need to use fire for land clearing. These activities include local fish cultivation in beje and keramba ponds, development of purun plants, rubber, peat swamp tree nurseries and agroforestry developments including tree plantations of belangeran (Shorea belangeran), jelutung (Dyera spp.), and gemor (Nothapoebe coriacea) mixed with vegetable and fruit crops such as pineapple. Through developing these alternative land use activities, awareness of fire prevention in the community increases. However, dissemination of prevention rules, agricultural training, fire control, and methods for utilizing left over organic materials (i.e. disposal of crop residues without use of fire) need to be carried out continuously.
The effect of the percentage of alaban waste and rice husk waste with tapioca adhesive on the physical properties
Authors: Syarief A , Nugraha A , Ramadhan M N , Fitriyadi  , Supit G G 
Published: May 2021

Abstract
Tapuk Village, Limpasu District, Hulu Sungai Tengah Regency is one of the processing centers for alaban wood charcoal in South Kalimantan. The alaban wood charcoal produced by Tapuk Village consists of several grades, namely: grade A, grade B, Grade C, and Grade D. Grade D charcoal is small pieces of charcoal which are leftovers from large charcoal, often called alaban wood charcoal waste. Around Tapuk Village, there are also many residents’ rice fields, where almost all year round there are piles of rice husks that are not used by the residents. The benefits of alaban wood charcoal and rice husk waste can be increased by making it into briquettes. The percentage of briquettes waste of alaban wood charcoal and rice husks, namely 100%: 0%, 90%: 10%, 80%: 20%, 70%: 30%, 60%: 40%, 50%: 50%, 40%: 60%, 30%: 70%, 20%: 80%, 10%: 90%, and 0%: 100%. Briquettes also use 5% tapioca starch adhesive. The briquettes are then tested for their physical properties. From testing and analysis, it is known that the moisture content, ash content, and volatile matter content increased along with the increase in the percentage of rice husks. The content of bound carbon (fixed carbon) and heating value decreased along with the increase in the percentage of rice husks.
Characterization of used oil distillate at various distillation temperatures as diesel fuel
Authors: Firman M , Arief S , Julianda H , Fauzan M , Saukani M 
Published: May 2021

Abstract
Used oil is a hazardous and toxic waste. When this waste is disposed off into the environment, it harms the environmental. The conversion of used oil to diesel fuel candidates has been studied utilizing a simple distillation method. The distillation is carried out on used oil with a zeolite catalyst placed on a distillation tower. Distillation temperature variations of 360 °C, 380 °C, 400 °C are applied to used oil to produce fuel distillates. Tests were carried out on distillates in flashpoints using ASTM D93, Kinematic Viscosity using ASTM D445 and Cetane Index using ASTM D4737. The results of the calculated cetane index test showed the respective values of 48.44, 48.46 and 48.84. The viscosity at 40°C (mm 2sec) resulted in 1.57, 1.64, and 2.00. While the flashpoint value shows the number 27°C, the temperature variation does not affect the flashpoint value. The results of this test, when compared with Dirjen Migas Specification, the flashpoint value has not been fulfilled although with the addition of NaOH. A distillation temperature of 400°C only fulfils the minimum kinetic viscosity. In contrast, the Calculated cetane index has been fulfilled, with the largest value generated at a distillation temperature of 400°C.
Analysis study of soil bearing capacity and settlement of single pile foundation based on N-SPT data
Authors: Gazali A , Fathurrahman  , Muthmainnah  
Published: May 2021

Abstract
Foundation is a very important structural element in a building. The bearing capacity of the soil is the support for the foundation, where a foundation is defined as a most basic part of the construction of a building that transmits the load originating from the weight of the building itself and the load acting on the building to the surrounding ground. The purpose of this research is to determine the bearing capacity of the foundation and the settlement of a single pile that occurs and to determine of the size of ship’s collision force against the building. The foundation used in the construction of the Sultan Suriansyah Mosque Port is a 45 cm diameter pile foundation. The calculation of bearing capacity of a single pile was carried out using the Mayerhoff method based on the N-SPT results of 399.802 tons. The settlement of a single pile foundation using the Semi Empirical Method is 0.036 m with an allowable drop of 0.045 m. The collision force of the ship against the Port is 0.0032 tons.
Spatial diversity of microalgae in Simeulue Island, Indonesia
Authors: Purbani D C , Yuliani Y , Sumerta I N 
Published: May 2021

Abstract
Microalgae naturally occur as valuable genetic resources for many industrial interests. However, the study on their diversity and potential as local strain resources, especially in Indonesia are limited. To assess the spatial diversity as basic information on exploring their further potential, we isolated microalgae from outer island-Simeulue, the Province of Aceh in four different habitats and locations. Seventeen cultures of microalgae were selected, purified, and maintained to the preferable conditions in IMK and AF6 media under light-based culture. Generally, the selected microalgae were referred to eukaryotic group based on morphological obsexrvation. BLASTn and phylogenetic analysis of 18S rRNA gene revealed 12 closely related species which are Chlorella kessleri, Chlorella sorokiniana, Oocystis heteromucosa, Stichococcus bacillaris, Coccomyxa melkonianii, Scenedesmus acuminatus, Scenedesmus bijugus, Coelastrella oocystiformis, Ankistrodesmus falcatus, Chlorococcum oleofaciens, Stigeoclonium tenue, and Planophila laetevirens. These species inhabit the spatial habitat and location of natural aquatic sources of Simeulue island. This study is expected to provide basic information for uncovering patterns of microalgae diversity and obtain new genetic resources for industrial uses as well as for taxonomic studies.
Quantitative trait loci identification for yield component traits in an Indonesian local rice variety, Untup Rajab
Authors: Yunus M , Satyawan D , Dadang A , Warsun A 
Published: May 2021

AbstractLocal rice varieties often carry useful genes related to yield component traits that can be utilized to develop high-yielding rice varieties. This study aimed to identify quantitative trait loci (QTLs) for yield component traits in Untup Rajab, an Indonesian local rice variety. QTL mapping was conducted using Inclusive Composite Interval Mapping (ICIM) method on a F2 population from a cross between TN-1 and Untup Rajab, which was genotyped using SNP markers and phenotyped for several yield component traits. A total of eight QTLs were detected. Two QTLs for spikelet number per panicle were found in chromosome 6 and 9 with PVE values of 13.01% and 15.57%, respectively. Three QTLs were identified for the number of filled spikelets per panicle in chromosome 4, 6, and 12 with PVE values of 7.73%, 9.19%, and 19.51%, respectively. Two QTLs were identified for the ratio of filled spikelets to total spikelet number per panicle in chromosome 3 and 12 with PVE values of 9.73% and 10.71%, respectively, and only one QTL was identified for the number of empty spikelets per panicle in chromosome 11 with a PVE value of 11.07%. Further investigation is still needed to verify their applicability for marker-assisted rice breeding.
Preliminary study on genetic diversity and relationship of 12 White Turmeric (Curcuma zedoaria (Christm.) Roscoe) accessions based on morphological traits
Authors: Heryanto R , Syahid S F 
Published: May 2021

Abstract
White turmeric (Curcuma zedoaria (Christm.) Roscoe) is one of the important plants in the genus Curcuma (Zingiberaceae). This plant grows in Asia and has wide variety of morphological characteristics. White turmeric can be used as a spice for food additive and the raw material for traditional medicine. Indonesian Spice and Medicine Crop Research Institute (ISMCRI) has collected 12 white turmeric accessions from several localities in Indonesia. This study aims to determine the relationship between 12 white turmeric accessions based on their morphological characteristics. The rhizome used weighs 30-50 grams with 2-3 shoots. The plots size was 2.5 x 3.5 m2 with a spacing of 50 x 50 cm2, contained 20 plants per plot. The experiment was arranged in a randomized block design with three replications. Morphological traits parameters observed were 11 morphological characters, namely plant height, leaf length, leaf width, number of leaves, leaf thickness, stem diameter, number of tillers, rhizome weight, rhizome length, rhizome width, and rhizome thickness. A significant morphological variation level was recorded for rhizome weight and plant height, while genetic diversity is showed by rhizome weight and a number of tillers. The morphological characteristics observed were correlated with each other. Cluster analysis created four major groups.
Growth, stomata and trichome characteristics of diploid and tetraploid Artemisia
annua L. plants
Authors: Normasiwi S , Efendi M , Rahman W , Hafiizh E A , Ermayanti T M , Lelono R A , Yunarto N 
Published: May 2021

Abstract
Tetraploid A. annua have been reported to have higher artemisinin level compared to diploid plants. This research aimed to evaluate growth, stomata, and trichome characteristics of diploids compared to tetraploid plants. Two accessions of diploids (K.I.B and K1.2.2) and two accessions of tetraploid plants (K2.2.9 and K3.2.1) V0M1 were grown in the field for 11 weeks. Growth of plants was investigated every week by measuring plant height, number of branches per plant, fresh and dry weights. Density and size of stomata were observed using light microscopy; the number of trichomes was observed by scanning electron microscopy. The artemisinin level was analyzed by HPLC. The results showed that the plant height of both diploid and tetraploid plants was comparable. From week-1 to week-11, all plants still increased in their plant height. Similarly, numbers of branches also increased except for diploid K.I.B plants. The highest growth rate of numbers of branches was found in tetraploid clone K3.2.1. However, the highest biomass production was found in diploid clone K1.2.2. The artemisinin level of tetraploid plants was higher than that of diploid plants. The level of ploidy was confirmed by flow cytometry analysis.
Kirinyuh (Chromolaena odorata): species distribution modeling and the potential use of fungal pathogens for its eradication
Authors: Sutomo  , Yulia E , Iryadi R 
Published: May 2021

Abstract

Chromolaena odorata is one of the weeds that is difficult to control and causes loss both economically and ecologically. This study aims to predict the distribution of C. odorata which affected by climate change and the potential of using fungal pathogens for its eradication efforts in Indonesia. The Biodiversity and Climate Change Virtual Laboratory application was used to create Habitat Suitability Index of C. odorata. Species data were obtained from the Global Biodiversity Information Facility and the variable environment parameters were obtained from the Worldclim current condition (1950-2000). Results show that Generalized Linear Model has values of 0.98. C. odorata most likely spreads to eastern parts of Indonesia. The model predicted it to be suitable to inhabit Bali-Lombok Islands (HSI ±0.8) as well as Lesser Sunda Islands, Flores (HSI ±0.76) and Sumba (HSI ±0.82), and also Papua which share similar HSI with Sumba. Four species of putative fungal pathogens were isolated from the diseased leaf tissue of C. odorata. One species of fungus that causes severe infection in the leaves of C. odorata was morphologically identified as Septoria sp. It considered as a biological control agent. Further studies are needed to confirm this association and their potential for biological control.
Biodiversity in the coastal ecosystems of small islands and its conservation status
Authors: Suyadi  , Nugroho D A , Irawan A , Pelasula D , Ruli F , Islami M M , Alik R , Tala D J. , Pay L , Matuankotta C , Leatemia A S , Naroli I 
Published: May 2021

Abstract
Around 77% of Indonesian islands is small islands and Indonesia known as mega biodiversity center, but coastal biodiversity of small islands was not well documented. The objective of this study is to assess coastal biodiversity in small islands and its conservation status. The study indicated that small islands provide complex biodiversity ranging from ecosystem to species. Diversity index of mangrove: 1.4-1.8, seagrass: 1.5–1.9, coral: 1.7–2.3. Ecosystem condition in urban small island was poor and in rural small island was healthy. The islands also provide fauna diversity i.e mollusc (110 species), crabs (52 species), and coral fish (261 species). Diversity of mollusc and crabs in rural island was higher than in urban island, χ2 (1) = 1.3, p< 0.001 and χ2 (1) = 4.3, p< 0.002, respectively. Diversity index of coral fish range from 2.14 to 4.27 (mean: 3.4). Most of the biodiversity located outside protected area and main threats were ecosystem degradation, pollution, overexploitation, and sedimentation. In conclusion, small islands are important coastal biodiversity spots, but it faces tremendous threats. The study recommends better management of coastal biodiversity i.e. establishing coastal protected areas in small islands, building marine corridor, and public awareness to ensure biodiversity conservation.
GC-MS analysis of essential oil of Kayu Papi (Exocarpus
latifolius R. Br., Fam: Santalacea from East Nusa Tenggara
Authors: Umroni A , Rianawati H , Siswadi  , Pujiarti R 
Published: May 2021

Abstract

Exocarpus latifolius R.Br. known as Kayu Papi or shrub sandalwood, naturally occurred in East Nusa Tenggara. This species classified as fragrant wood and, on some occasions, has become sandalwood (Santalum album Linn) substitution. This species is beneficial as a medicine. A recent study indicated that Exocarpic acid isolated from Papua New Guinea origin empirically cures tuberculosis in the in vitro treatments. However, the study of the biological compound of this species from the region is little known. This research is aimed at elucidating chemical compounds in the Kayu Papi wood originating from East Nusa Tenggara. The method was using GCMS analysis of the essential oil through prior steam distillation. The result revealed that thirty-two compounds represent 99.94% of essential oils, with six major peaks in approximately 41 minutes’ retention in total. The six-dominant compound of oils were Benzeneethanamine, alpha-methyl-N-(phenyl methylene) 34.37%, Alpha-curcumen (14.05%), Tridecane, 2-methyl-2-phenyl (11.2%), Alpha-calacorene (6.40 %), Levomethamphetamine (4.46%), Benzene, (1-1-dimethylnonyl) (4.11%). Whereas the twenty-six remaining components were less than and just over 3% each. There was no exocarpic acid identified, but some compounds are identical to sandalwood or other fragrant wood. The study may complement Santalacea’s list of chemical compounds to distinguish sandalwood and other fragrant wood.