bluuebunny/crossref_metadata_2025_split huggingface dataset:
Farmers’ term of trade in Indonesia: an overview during pandemic COVID-19
Authors: Pinilih M , Rakhmawati D , Rosyidi R 
Published: May 2021

Abstract
The COVID-19 pandemic has an impact on the economic sector, including the agricultural sector. This research will look at the agricultural sector’s condition, especially the welfare of farmers represented in the value of the Framers’ Term of Trade (FTT) during the COVID-19 pandemic and will forecast FTT for September 2020. This research uses Farmers’ Term of Trade (FTT) data obtained from the Indonesian Statistics Bureau (BPS). FTT data were used from January 2016 to August 2020. The Single Exponential Smoothing (SES), used to forecast the FTT value in September 2020, and the determination of the most optimal forecasting value used Mean Absolute Percentage Error (MAPE). The results showed that the TFF value, recorded during the COVID-19 pandemic, experienced a drastic decline in May 2020 with a TFF value of 99.46. The forecasting calculations using the SES and MAPE methods showed that the most optimal FTT value for September 2020 was 100.63, with a MAPE value of 19.97 percent.
Marker identification and phylogenetic analysis of saline tolerant rice varieties
Authors: Suprayogi  , Dewi P S , Oktaviani E , Aisya A W , Prasetia R G N 
Published: May 2021

Abstract
Selection for saline tolerant rice genotypes has been based on morphological or physiological character. These two characters are phenotypically affected by environmental factors, such that, their reliabilities for selection criteria are obscure. Molecular marker assisted selection has been reported to be an effective and efficient selection method as molecular markers are not influenced by environmental factors. The objectives of this study were: (1) to describe the phylogenetic relationship of rice genotypes based on SSR markers, and (2) to know the reliability of microsatellite markers for phylogenetic analysis of rice genotypes in relation to salinity tolerance. The research was conducted from July to October 2020 at Plant Breeding and Biotechnology Laboratory, Faculty of Agriculture, Jenderal Soedirman University, Purwokerto, Indonesia. DNA extraction was carried out using CTAB method. Agarose gel electrophoresis was used for determination of genomic DNA quality and concentration. PCR was performed using 2720 Applied Biosystems Thermal Cycler. Seventeen microsatellite primers, namely: RM129, RM156, RM222, RM223, RM224, RM241, RM292, RM342B, RM444, RM426, RM493, RM519, RM528, RM1287, RM3412, RM8094, and Wn11463, were analyzed on eight rice genotypes, namely: Inpari Unsoed-79 Agritan, Cisadane, Atomita-2, Pelopor, Dendang, Lambur, Siak Raya, and IR 29. Extraction of genomic DNA has resulted in high quality DNA of 100 ng/μL concentration. Phylogenetic analysis demonstrated that the eight genotypes could be grouped into two clusters. Tolerant variety of Inpari Unsoed-79 Agritan was distantly apart from the susceptible variety IR29.
Investigation of condition factor of wild spiny lobster juvenile Panulirus spp. inhabit in Cilacap waters, Indonesia
Authors: Haryono F E D , Winanto T , Amron  , Trenggono M , Harisam R T , Wisudyanti D 
Published: May 2021

Abstract
The aim of study is to analyze Length-Weight Correlation [LWC] and Condition Factor [CF] of wild spiny lobster juvenile Panulirus spp. (Decapoda: Palinuridae) inhabit in Cilacap waters. Juvenile of spiny lobsters are collected by dives and lighted attractor as juvenile trap from August to October 2018. The spiny lobster juvenile from study site is collected and accommodated in stereo foam box containing sea water and aerated. The juvenile is transported to laboratory and kept in 50×70×50 cm glass box containing sea water, aerated and identified. Total of 231 spiny lobster juveniles were collected and identified were found three species, namely P. homarus (213 individuals), P. versicolor (9 individuals) and P, ornatus (11 individuals). Minimum of CLand weight were found 3.2 mm and 0.01 g; and maximum were obtained 21 mm and 0.52 g. The LWC juvenile was found strong relation and were close to 1. The CF Panulirus spp. juvenile was obtained 0.009865 ± 0.00409 and the CF of P. ornatus was the highest value [0.011218 ± 0.00406] than other species. The habitat of Cilacap coastal waters demonstrated more support to the growth of P. ornatus than the growth of P. homarus and P. versicolor.
Mangrove cluster as adaptation pattern of mangrove ecosystem in Segara Anakan Lagoon
Authors: Hilmi Endang , Sari Lilik Kartika , Amron  , Cahyo Tri Nur , Sahri Siregar Asrul 
Published: May 2021

Abstract
Segara Anakan Lagoon (SAL) as the specific ecosystem is arranged by the mangrove ecosystem and lagoon ecosystem. The mangrove ecosystem in SAL needs high adaptation to reduce the impact of water tide, water inundation, water salinity, and other factors. This research aimed to analyze mangrove clustering in Segara Anakan Lagoon. The method of this research used Hierarchical Clustering Methods based on mangrove density to analyze cluster adaptation of the mangrove ecosystem. The result showed that (1) The mangrove density (diameter > 4 cm) to analysis mangrove clustering showed that East Segara Anakan had density between 900 – 5425 trees ha-1 (low-very high density ) and West Segara Anakan had density between 133 – 3.367 (low – high density). (2) the mangrove clustering showed that West Segara Anakan had three clusters. The first cluster was arranged by clustering of stations {((15.18),(9.17),(3.6)),8)); ((1.2),5)}. The second cluster was arranged by clustering of stations {(((4.10),14,12))}. And the third cluster was arranged by clustering of stations{(((11.20)16));(7.19))}. (b) East Segara Anakan also was formed by three clusters were the first cluster was formed by clustering of stations (2-(((4, 13), 6) ((1.12), ((4.13) ((5.10) (7.11)))) The second cluster was arranged by clustering of stations (9; ((8.15), (19, (20.21)))) The third cluster was formed by clustering of stations (18 (17, (14,16))).
Nutritional information access and dietary behavior among people with diabetes during Covid-19 pandemic
Authors: Subardjo Yovita Puri , Ramadhan Gumintang Ratna , Betaditya Dika , Syarifah Muflihatus , Fauziana Abidin Nurafifah 
Published: May 2021

Abstract
The Covid-19 pandemic limiting physical contact. People with diabetes are associated with higher severity and mortality than people without diabetes due to Covid-19. People with diabetes still need access to nutritional information that can help to maintain glycemic control. This study aims to describe access to nutritional information for diabetics and their dietary behavior during the covid-19 pandemic. The survey was conducted on 72 people with Diabetes Mellitus. This study used the Dietary Behavior Questionnaire (DBQ) and Nutritional Information Access Questionnaire via Google Form and phone call. The majority of respondents (74%) can’t visit dietitians or nutritionists at healthcare providers to get nutrition counseling or education during the Covid-19 pandemic. Respondents get the nutrition information 42.9% by virtual media, 29.2% from health workers, 10% from family, 7.14% from friends, and 9.29% others did not get nutritional information. The most reliable source of information is from health workers, both delivered virtually or face to face. Most of them had difficulty recognizing the amount of energy needed, selecting a healthy diet, arranging meal plans, and managing dietary behavior challenges. It the important to construct nutritional education media that can help dietitians or nutritionists providing virtual education during a pandemic when people with diabetes can’t visit a healthcare provider.
Several ecological factors that determine the survival of temperature resistant Phytoseius amba
Authors: Budianto Bambang Heru , Rokhmani  , Basuki Edi 
Published: May 2021

Abstract
The ability of the predatory mite Phytoseius amba resistant temperature (results of superior applied research in 2018-2019) in controlling the spider mite Tetranychus urticae has not been stable in the long dry conditions in 2019. The instability of ability indicated by the decreased survival of temperature-resistant P. amba is closely related to various ecological factors, namely temperature, humidity, rainfall, sunshine intensity, leaf angle, density, and size cassava cultivar trichome and intra- and inter-species competition. Augmentation is an effort to release the mass of temperature-resistant P. amba predatory mites based on ecological factors. This biocontrol agent is still useful in playing a role in global warming conditions. The first-year research (2020) aims to determine the survival of P. amba resistant to temperature on a field scale and obtain key ecological factors that determine the survival of temperature-resistant P. amba local predator mites in cassava gardens in Banyumas Regency. The method used in the first year (2020) field-scale research was a survey with a random sampling technique. Samples were taken from the leaves of the Martapura cultivar in Cilacap. Data were analyzed using a randomized model variance analysis at an error rate of 0.1. The variance analysis results showed that among the temperature, humidity, rainfall, the density of adult T. urticae, nymphs, larvae, and eggs, the density factor of adult T. urticae mites was an ecological factor that determined the density of temperature-resistant P.amba mites on the field scale.
Factors affecting electricity consumption of residential consumers in Cambodia
Authors: Noeurn V 
Published: May 2021

Abstract
The main purpose of this paper attempted to examine major factors that affect the electricity consumption of residential consumer type in Cambodia by observing through two approaches, socio-economic and direct-use perspectives. The end-use model and stepwise linear regression analysis were applied. The residential consumers were categorized into three levels of household income, such as; high, medium and low. The results of the actual data from survey questionnaire illustrated that determinant factors of electricity usage depended on the income level. High income households consumed 52% in residential sector, more than medium and low income households which had 34% and 14%, respectively. The regression analysis expressed, from socio-economic factors, the electricity consumption of residents had significantly been influenced by total monthly income, level of education and number of people per household. In direct-use perspective, comfort appliances consumed the most energy for 40.53% of total monthly consumption. It followed by cooking appliances with 33.53%, and recreation used 10.9% in the household. Lighting system required 7.85%; hence, the least consumed energy materials were cleaning-use, only 7.19% of total monthly usage. The residential consumers could wisely consume their monthly electricity consumption by saving on the affected factors.
Physical and mechanical properties of coffee waste composites and viselin fabrics as alternative base materials for manufacturing products in the interior field
Authors: Purwanto  
Published: May 2021

Abstract
The results of coffee plantations and the growth of coffee shop entrepreneurs in Indonesia are increasing so that coffee shops (angkringan) have sprung up in various cities. World coffee consumption averages 1.7 kg per capita per year, in Indonesia it has increased by an average of more than 7% per year with the consumption of 4.55 million bags of coffee measuring 60 kg, a growth of 1.8% until the 2018/2019 period. In the city of Yogyakarta and its surroundings there are 1,200 coffee shops in 2017, this figure is much higher than the big cities around it. Yogyakarta is famous for its “jos” coffee in a lot around the Malioboro street. As a student city, many young people also enjoy coffee and produce a lot of coffee dregs waste. For this reason, this research raises about the use of coffee dregs waste into composites with viselin fiber reinforcement based on its physical and mechanical properties as an alternative base material for making products in the interior sector. The composite composition consists of coffee dregs ranging from 10,20,30,40, and 50 gr, 120 ml water, 3 gr alginate, glycerol 2,3,4 and 5 drops, so the elements varied are coffee and glycerol. The ingredients are mixed and heated then printed measuring 10 cm × 15 cm, then aerated for 24 hours. Composite results were tested for tensile, tear test, flexibility test and observation of surface texture. The results of the composite test with the composition of 30 gr of coffee and 3 drops of glycerol have the greatest tensile strength of 34.9 kg / mm and the tear resistance of receiving a load of 30.4 kg. For physical testing, it is obtained that a smooth surface can be bent and can even be formed into a tube so that the resulting composite can be used as an alternative material for making a product, especially in the interior field.
The synthesis of Ag3PO4 under graphene oxide and hydroxyapatite aqueous dispersion for enhanced photocatalytic activity
Authors: Sulaeman U , Permadi R D , Diastuti H 
Published: May 2021

Abstract
The development of Ag3PO4 photocatalyst for organic pollutant degradation is very challenging due to excellent activity under visible light exposure. The research aims to synthesize Ag3PO4 under graphene oxide (GO) and hydroxyapatite (HA) as a phosphate ion source for Rhodamin B degradation. The Ag3PO4/GO was prepared using the precipitation method with the starting material of graphene oxide aqueous dispersion, AgNO3, and hydroxyapatite suspension. The structure, absorption, morphology, and element composition of photocatalysts were studied using XRD, DRS, SEM, and EDX. Photocatalytic abilities of the samples were tested using RhB oxidation under blue light exposure. The results exhibited that GO improves the crystallinity andvisibleabsorption spectrum of Ag3PO4. Incorporating GO on Ag3PO4 decreases the ratio of O/Ag and O/P leading to a defect formation. The reaction mechanism on the surface of the photocatalyst was mainly run by holes and superoxide radical ions. The modification of Ag3PO4 using hydroxyapatite and GO improved photocatalytic activity.
An assessment Indonesia’s Ocean Thermal Energy Conversion (OTEC) as an electrical energy resource
Authors: Trenggono M , Hidayat R R , Cahyo T N , Mahardiono M D , Destrianty A D 
Published: May 2021

AbstractThe primary source of Indonesian electricity still has a dependence on the availability of fossil energy, which is limited in its presence and has non-renewable properties. It is necessary for alternative energy research as a renewable source of electrical power to replace energy sources that cannot be renewed. The one of energy is ocean thermal energy conversion, in which the technology is based on the thermal energy difference between surface temperatures and deepsea water to produce electricity. The research aimed to assess the power potential generated by utilizing the vertical sea temperature in some Indonesian waters. The survey method was used to collect secondary data from the HYbrid Coordinate Ocean Model. The process was completed with the conversion of OTEC to produce the electric base on the model applied by Rauchenstein. This model calculated the net power production of an OTEC plant as a function of water temperature and chilled water pipe length with the potential OTEC power generated for a closed cycle power plant of 100 MW / 150 MW gross power. The study found an average temperature difference of 20 °C at a depth of ≥500 m. Based on the seasonally mean, the highest potential of power was in the Papua of 174 MW during transitional season 2. The lowest value was assessed in Southeast Sulawesi of 82.09 MW in the southeast season. The highest electricity potential for annual average has been obtained in Papua with 168.33 MW and the lowest around 97.69 MW in North Sulawesi.
Analysis on the Transboundary Impact Assessment System and Practice of Hydropower Development on the Main Mekong River
Authors: Zhao Jin , Guo Lidan , Lin Jinghan , Dou Rui , Huang Yujia , Bao Yunxiang 
Published: May 2021

Abstract
The relevant documents and regulations on procedures and contents of transboundary impact assessment issued by the Mekong River Commission are combed. Combining with analysis of existing practice, experience and shortcomings of transboundary impact assessment in hydropower development on the main Mekong River is discussed. The results show that the transboundary impact assessment procedure of the Mekong River Commission is gradually improving. What’s more, the management mode of transboundary impact has gradually changed from paying attention to the prior evaluation to the whole process management. But there is no universal assessment standard for the transboundary impact, and the comprehensive assessment of the transboundary impact caused by hydropower development is lacked.
Performance analysis of a new type of rainwater power generation device based on piezoelectric effect
Authors: Ma Chenyu , Wang Xianfeng 
Published: May 2021

Abstract
In this paper, the water catchment device is combined with the piezoelectric cantilever beam to gather raindrops into a larger rainball to improve the power generation efficiency of the system. This makes rainwater power generation more feasible. The results show that when the rainfall intensity is constant, the output voltage of the power generation system increases significantly as the size of the rainwater converging device increases. With the same size of rainwater converging device, as the rainfall intensity increases, the power generation effect is also significantly improved, thus demonstrating the feasibility of the new rainwater power generation device.
Numerical simulation of borehole wall remodel during gas drainage
Authors: Li Lihua , Chen Yong 
Published: May 2021

Abstract
Gas drainage bearing coal and rock mass can be simplified as isotropic homogeneous body with gas saturation. Numerical method was used to study the influence of borehole wall remodel-size, remodel-length and negative pressure on gas drainage effect which based on gas diffusion and seepage equation of pore fracture system and governing equation of coal and rock mass degeneration. The results showed that borehole wall remodel can maintain the support of coal skeleton in borehole and prevent blocking the gas flow channel, gas pressure drop in remodelled section is more obvious than that in the non-remodelled section, the longer the remodelled length of borehole wall the more smooth the gas flow channel between borehole and coal body around borehole, with the increase of negative pressure, the decrease range of gas pressure at the same depth increases, but the difference is small under different negative pressure. On the premise of preventing borehole creep instability, borehole wall remodel can provide high-quality gas flow channel for coal seam gas drainage, maintain the continuous influence of negative pressure on coal body along borehole depth to extend the life cycle of gas drainage and is not sensitive to borehole wall remodel size and negative pressure.
Influence of microcapsules on self-healing performance and road performance of dense-graded asphalt mixture
Authors: Chen Bo , Liu Dabin , Chen Afang , Wang Yikai 
Published: May 2021

Abstract
Asphalt mixture containing microcapsules has a certain self-healing ability, which can prolong the service life of asphalt pavement. In order to study the self-healing performance and road performance of asphalt mixtures containing microcapsules, the intermittent fatigue test and split test were used to study the effect of microcapsule content on self-healing performance, and the road performance of the mixture with different microcapsule content was studied. The results show that with the increase of the amount of microcapsules, the intermittent fatigue life and SHSR of asphalt mixtures containing microcapsules increased first and then decreased, and reached the maximum when the amount of microcapsules was 6%. The low-temperature bending strain of the mixture increased, while the dynamic stability (DS) and TSR decreased. Considering the change law of self-healing performance and road performance, the recommended content range of microcapsules was 4%-6%.
Analysis of the Influence of the Shibahu Channel on Water Level and Sediment in the Lower Reach Yellow River
Authors: Caodong Jiang , Liangchao Ma , Dongfeng Li , Hongwu Zhang , Zihao Li 
Published: May 2021

Abstract
It is necessary to study and analyze the Shibadu flow path as a prospective alternative flow path for the Yellow River diversion. In this paper, the established two-dimensional mathematical model is used to calculate the Shibadu flow path and analyze the water level characteristics of the Shibadu inlet channel and the influence of the ocean tide level on the upstream water level and on the sediment transport. From the calculation results and water-sediment characteristics, it can be seen that: the Shibahu diversion is located in a bend, so it has a high resistance to the upstream water flow, resulting in a small change in the upstream water level at the diversion, a high upstream water level, and a significant decrease in the water level after the diversion; the range of the spread of the sediment movement in the Shibahu is small, and coupled with the weak ocean dynamics, the ability to transport sediment to the outer sea is poor, resulting in the inlet sediment near the mouth gate. The variation of sediment entering the sea during the rising tide and the falling tide is the same and different: the sediment concentration increases at a certain distance during the rising tide, but not during the falling tide. Both cases are about 41km away from the entrance, sediment began to settle.
Overbank Floods of Lower Yellow River Based on Two - dimensional Numerical Simulation and Analysis
Authors: Liangchao Ma , Caodong Jiang , Dongfeng Li , Hongwu Zhang , Zihao Li 
Published: May 2021

Abstract
When the flow of the Yellow River is large, a large range of floodplains will be formed around the main channel, and the crisis will greatly improve safety. Analysis of the changes of flood peak shape, flood peak propagation speed and flood level at large flow rate plays an important role in the protection and flood prevention of the Yellow River levee. Based on the established two-dimensional mathematical model of Luokou to the Yellow River estuary, the data of peak flow, velocity and water level are obtained by simulation calculation. By drawing the flood peak evolution process map from Luokou to Yellow River estuary, the change of flood peak type and flood peak propagation speed are analyzed to provide technical support for flood defense.
Study on the Development Path of High Efficiency Water Saving Agriculture in Chengdu Plain under the Background of Rural Revitalization Strategy
Authors: Hui Li , Chun-xiu Liao 
Published: May 2021

Abstract
In order to effectively promote the overall development goal of Rural Revitalization Strategy, aiming at the problems and development potential of high-efficiency water-saving agriculture in Chengdu Plain, this paper puts forward the conservation tillage technology focusing on Soil and water conservation, the water saving irrigation and rainwater harvesting supplementary irrigation technology focusing on the efficient utilization of water resources, and the chemical irrigation technology focusing on improving the drought resistance ability of crops. The development mode of water-saving agriculture in Chengdu Plain is put forward, which is the combination of water collecting agriculture mode, conservation tillage mode, two season fixed furrow double no tillage mode and modern agricultural water-saving irrigation technology mode. It is not only conducive to food security and regional economic development, but also effectively promote the sustainable development of environmental, ecological and social benefits.