bluuebunny/crossref_metadata_2025_split huggingface dataset:
Sustainability of pompano production in the waters of North Aceh
Authors: Indra  , Putri N A , Marsudi E 
Published: March 2021

AbstractPompano fish production from 2009 to 2018 often fluctuated with the tendency to decrease in the last two years. The highest production happened in 2006 reaching 50 tons per year while the lowest production reached 24 tons in 2013. This present study aims to analyze the status of pompano resource management in the actual condition, Maximum Sustainable Yield (MSY), Maximum Economic Yield (MEY), and Open Access (OA) as well as to identify the level of resource utilization of pompano fish in North Aceh waters in accordance to the allowable catch. The study found that pompano fisheries resources in the MSY regime produced 54.49 tons per year and the level of effort was 1,301 trips with the profit of Rp 468,714,567 per year. In the MEY regime the catch reached 48.22 tons with the catch effort of 860 trips and the profit gained of Rp 636,447,069 per year. The management in the MEY regime is more efficient than that in the MSY. The level of pompano resource utilization is in the status of fully exploited with a percentage value of 92%. The utilization of pompano fisheries may still be done under supervision to avoid damage to fish resources and the environment.
Agricultural sustainability assessment: A network-based approach with evidence from Jiangsu Province, China
Authors: Xiong F , Huang L 
Published: March 2021

Abstract
Sustainability assessment is one of the fundamental ingredients in modern agricultural development. Various sustainability assessment approaches relying on macroeconomic indicators have been proved to be inappropriate in practice. This study aims to establish a concise and testable assessment approach by employing the network and evolutionary geographic economic theory. The big data of Chinese agricultural enterprises in Jiangsu Province has enriched our research fruit in terms of empirical evidence. Results indicated the agricultural sustainability has been generally increasing at the provincial level for the last twenty years, but diversified development paths have appeared referring to different cities. Relevant recommendations were focused on the openness governance and horizontal integration of the local agricultural industry.
Decreasing Oxalate Levels in Kimpul Tubers (Xanthosoma sagittifolium) by Physical and Chemical Methods
Authors: Sulaiman I , Annisa C , Lubis Y M , Rozali Z F , Noviasari S , Eriani K , Asrizal C W 
Published: March 2021

Abstract

Kimpul tubers have anti-nutritional substances in the form of calcium oxalate (CaC2O4) which when consumed will cause itching sensations in the skin, mouth, throat and digestive tract. Calcium oxalate content in kimpul tubers is 1,740 mg / 100 g. The safe limit for consuming oxalate for adults is 0.60-1.25 g per day for 6 consecutive weeks. In this research, a combination of physical and chemical methods will be carried out with taro varieties, namely Umbi Kimpul (Aceh Besar). Physical treatment (boiling and steaming) and followed by immersion treatment with chemicals (6% sodium bicarbonate, 20% acetic acid and 10% sodium chloride) are thought to affect the decrease in calcium oxalate in taro. The lowest oxalate content of kimpul tuber flour was obtained, namely 13.62 mg / 100 g of the material from the boiling treatment by soaking in 20% CH3COOH. While the steaming treatment with the lowest levels of calcium oxalate in kimpul tuber flour, namely 22.28 mg / 100 g after soaking in 6% NaHCO3. The two values obtained from the test results were lower than the calcium oxalate content of fresh kimpul tubers, which was 42.35 mg / 100 g.
Characterization of several collection genotypes of Cayenne Chili (Capsicum frustescense) in Aceh
Authors: Hafsah S , Nura  , Rahmawati M , Hayati E , Syukur M , Firdaus  
Published: March 2021

Abstract
The purpose of this study was to obtain information about genotypes characterization results of several IPB collection’s cayenne chili genotypes in Aceh. This research was conducted in the East Sector Experimental Field and the Laboratory of Genetics and Plant Breeding, Faculty of Agriculture, Syiah Kuala University from February 2019 to July 2019. This study used a one-factor randomized block design. This study used 11 IPB genotypes of cayenne chilli and 5 comparison varieties. Each treatment consisted of three replications and each experimental unit consisting of 20 plants. The result of cluster analysis on qualitative characters and quantitative characters in cayenne chilli produces two clusters. Cluster I consists of 10 genotypes which include F5 285290-237-6-1, F6 285290-6-10-1-1, F5 285290-290-2-1, F5 285290-290-9-1, F5 285290-290-9-3, F5 321290- 40-2-1, F6 285290-123-6-15, F6 321290-252-10-8-4, F5 285290-38-6-3, F6 321290-252-10-8-2, Cluster II consists of five varieties and one genotype which includes the Bonita variety, Garut local varieties (290), Taruna (295), Cakra Putih (285) and Tabasco (321) and one tested genotype F6 321290-252-10- 8-75. Mostly, the genotypes resulted from crossing has a different group with its parents, this is presumably due to the influence of genetic and environmental factors to the plant's growth.
Identification of lactic acid bacteria from etawa goat milk kopelma Darussalam Village, Banda Aceh
Authors: Rahmawati N , Syukri M , Darmawi D , Zachreini I , Yusuf M , Idroes R 
Published: March 2021

Abstract
Identification of Lactic Acid Bacteria (LAB) has been carried out based on the catalase test and Gram staining of Etawa pure Goat Milk samples that obtained from Kopelma Village, Darussalam District, Banda Aceh City, Aceh Province. De Man, Rogosa, Sharpe Agar (MRSA) media was used for LAB isolation. There were 10 isolates of goat milk bacteria that used for microscopic characteristics, morphological observations, catalase test and Gram staining. Based on the microscopic test, it was explained that all colonies had similar characteristics, that having a round shape, convex surface shape, 1-2 mm diameter and cream color. In the catalase test, the results were negative, because all isolates did not produce gas bubbles after dripped with H2O2 solution. The morphological results showed that all isolates were Gram positive, marked by purple cells and bacilli cells. Based on the Gram staining and the shape of the bacillus cells, it were suspected that milk isolates are candidates for the genus Lactobacillus. Microscopic diagnosis is only a provisional presumption. Therefore, it needs a conclusive diagnosis, such as biochemical properties which are important factors that must be carried out for the next stage.
Phytochemical and infra-radiation test of Mangkokan leaf (Nothophanax scutellarum merr.)
Authors: Sriyanti C , Siregar T N , Mudatsir  , Gani A 
Published: March 2021

Abstract
Mangkokan (Nothophanax scutellarium merr.) is an ornamental plant that can be used to treat disease. Generally, the leaves are used as a lactant, diuretic or medicine to treat breast inflammation, swelling, hair loss, fever, headaches and constipation. The research objective was to identify the active compound content via Fourier Transform Infrared Radiation (FTIR) in Mangkokan leaf extract. This study used n-hexane, ethyl acetate, methanol and ethanol as solvents. The yield was 2.4% with 2.4 g n-hexane extract, a yield of 3.39% with 3.39 g of ethyl acetate extract, a yield of 17.39% with 17.39 g of methanol extract, and a yield of 19.55% with 19.55 g ethanol extract. The secondary metabolite test obtained positive n-hexane extract results containing steroids, positive ethyl acetate extract containing alkaloids (using Dragendorff’s, Mayer’s and Wagner’s reagents), steroids and phenols. In contrast, methanol and ethanol extracts had the same content, namely alkaloids (confirmed via Dragendorff’s, Mayer’s and Wagner’s reagents), flavonoids, steroids, tannins, phenols and saponins. FTIR analyzed fuctional groups for each extract through radiation at different wavelengths.
Detection of Xa-27 gene in rice progenies F4from hybridization of tinggong / IRBB27 and its resistance to bacterial blight
Authors: Zakaria S , Basyah B , Oktarina H , Kesumawati E , Jalil M , Suriani  
Published: March 2021

AbstractTinggong, one of Acehnese rice variety which has long-life span, low production, high stems, and susceptible to bacterial blight (BB). To improve its performance, Tinggong has been crossbred with IRBB27 which has resistance gene (Xa-27) to BB. Five genotypes (T2, T3, T10, T18, T22) of F4from the cross were used in this research. The existences of Xa-27 gene in the plants were detected molecularly using dominant STS (Sequence-Tagged Site) marker M964e. Phenotypic analysis of plants resistance to BB were performed by inoculation ofXoostrain IV and VIII at 15 DAT and analysed their lesion at three weeks of inoculation. Prospective genotypes were identified based on their agronomic characters. The results showed that from 60 plant samples observed, 47 plants (78,33%) from the cross inherited Xa-27 gene, and 34 plants (56,6%) showed resistance to bothXoostrain IV and VIII. The study also revealed that there were 8 plants from this genotypes has potential to be developed. These plants showed resistance to bothXoostrain IV and VIII, harvesting time from 108-116 days after sowing, with estimated production from 6,3-9,4 ton ha-1. These genotypes were T2.10; T3.12; T10.9; T18.1; T18.2; T18.7; T18.10and T22.3.
The effect of drying land on the character of corn (Zea mays) on lightness properties
Authors: Hadipernata M , Al-Baarri A N , Somantri M , Munarso J , Rachmat R , Rahayu E , Pratiwi A F , Setyadi B , Mawarid A A , Pangestika W , Lestari F P 
Published: March 2021

Abstract
Corn is one of the most popular agricultural commodities in Indonesia. As a traditional farming system, the corn was then dried under the sun after harvesting resulting in the specific appearance. This research was aimed at determining the lightness in corn after the dry process using the oven. The corn after harvesting in 120 days was transferred to the laboratory and oven-dried at 38-43°C for 7 days. Based on the research conducted, the lightness of the corn experienced changing day by day and through the detection using lightness value, the decrease could be determined. The conclusion of this study was that the longer the drying caused the reduction in lightness of the corn.
Near infrared reflectance spectroscopy: classification and rapid prediction of patchouli oil content
Authors: Basyir F , Munawar A.A , Aisyah Y. 
Published: March 2021

Abstract
Patchouli is a fragrant oil that produces essential oils known as patchouli oil. The main content of patchouli oil is Patchouli alcohol (PA), generally to determine the PA content of patchouli oil uses chemicals and the waste is not good for the environment. Therefore, there is another alternative method to address these problem, one of the alternative technologies to determine the content of patchouli oil is to use Near Infrared Spectroscopy (NIRS). NIRS can be used to analyze samples rapidly, easily, non-destructive and does not require any chemicals. In this study, the PA content and patchouli oil refractive index were obtained through the acquisition of NIRS spectrum in patchouli oil samples from several different regions with different fractions. Patchouli oil classification is carried out by the Principal Component Analysis (PCA) method. The content of PA content and refractive index is carried out by verifying the factual results of laboratory tests using the Principal Component Regression (PCR) method. Patchouli alcohol spectrum data is found in the wavelength range of 1350-1450 nm and 1950-2100 nm. Predicted results with PCR for PA content and refractive index show values R2 = 0.95 and 0.99 respectively with RPD values of 5.07 and 0.0011.
Chemical characteristics of cascara tea from several varieties of coffee in Aceh Province
Authors: Murlida E , Noviasari S , Nilda C , Rohaya S , Rahmi F , Muzaifa M 
Published: March 2021

Abstract
In coffee processing, coffee husks are usually thrown out, creating a large amount of waste which can potentially pollute the environment. In several countries, coffee husks have been used as a drink and have a high selling value known as cascara tea. The aim of this study is to determine the differences in the chemical characteristics of cascara tea made from three coffee varieties in Aceh Province. This study used a randomized block design with coffee variety as the single factor, either Arabica, Liberica, or Robusta and analyzed by ANOVA. The parameters analyzed were pH value, total dissolved solids, total phenol, and antioxidant activity. The results showed that coffee varieties affected the pH value, total dissolved solids, and total phenol in the brewed cascara. However, coffee varieties do not affect the antioxidant activity of cascara tea. The average pH value of cascara tea obtained was 5.17, total dissolved solids was 0.54 Brix, total phenol was 0.58 mg GAE/ml and antioxidant activity was 70.02%. The highest total phenolic compounds were obtained from Robusta coffee varieties with 0.64 mg GAE/ml. It is necessary to carry out further analysis of the volatile compounds and their correlation with the resulting cascara tea flavor.
N, P and K content in non-soil planting media for pakchoy (Brassica rapa L.) cultivation in vertical circulation system of aquaponics
Authors: Zaitun  , Halim A , Rahya S 
Published: March 2021

Abstract
This study attempts to integrate freshwater fish aquaculture with vegetable cultivation by using agricultural waste as planting media. It is expected that environment friendly technology will be developed for integration of pak choy cultivation and freshwater catfish production (Clarias sp.). The aims of the study are to determine the types of organic planting media and aquaponics watering system that is able to provide sufficient nutrients to the integrated agriculture system. Four organic materials from agricultural wastes e.g. shavings woods, coconut husk, coconut shell biochar and coffee shell biochar were used for growing media. Two aquaponic watering systems with catfish rearing were combined with the organic materials as planting media in a factorial randomized block design of experiment. Addition of organic materials into growing media of pak choy is necessary in the aquaponic system because besides make the media better texture, they also provide nutrients to the plant, particularly the phosphorus. Between the organic materials, coconut shell biochar was high content in phosphorus, while coffee shell biochar in potassium. The experiment also concluded that water circulation has no effect on the nutrition concentration in the aquaponic system.
Comparison of the prosperity of coffee and non-coffee farmers in Central Aceh District based on expenditure, access to food, and ownership of assets
Authors: Zulkarnain  , Rahmaddiansyah  , Bagio  
Published: March 2021

Abstract
Central Aceh District, Aceh, Indonesia, is well known as a coffee-producing region. However, based on land elevation, not all areas in this district are suitable for producing coffee. Thus, not all farmers can cultivate coffee. This study examines the difference in prosperity between farmers who cultivate coffee and farmers who do not. Prosperity varies based on household members' expenditure per capita, access to food, and assets owned by the two farmers' groups. The study uses the Chi-Square Test of Independence and Independent Samples t-Test. Based on per capita expenditure, access to food, and assets, the results demonstrate no significant difference in the welfare of the two groups of farmers.
Material characteristics and electrochemical performance of lithium-ion capacitor with activated carbon cathode derived from sugarcane bagasse
Authors: Elang Barruna A G , Muhamad Naufal R , Nugraha Mohammad Ridho , Subiyanto Iyan , Tinaprilla Netti , Subhan Achmad , Chairul Hudaya 
Published: March 2021

AbstractLithium-Ion Capacitor (LIC), a hybrid energy storage device, is believed to be an ideal option for energy storage device applications due to its properties with high specific energy and high specific power. In this study, LIC’s cathode material is made of activated carbon derived from sugarcane bagasse prepared by the carbonization process at 500OC for 60 minutes and activation process utilizing KOH as an activating agent at varying temperatures and varying ratios of carbon to KOH mass. This paper also compares the material characteristic and electrochemical performance. In this paper, full cells of LIC are fabricated using activated carbon as the cathode material and LTO as the anode material. Sugarcane bagasse activated carbons are characterized by Scanning Electron Microscopy (SEM) and Brunauer Emmett Teller (BET). The electrochemical performance of LIC is obtained from cyclic voltammetry (CV) and charge-discharge (CD). Sugarcane bagasse activated carbon (SBAC) produces a high specific surface area with values from 1095 m2/g to 3554 m2/g. The assembled LIC can produce a maximum specific capacitance of 31.94 F/g, the highest specific energy of 35.49 Wh/kg, and high specific power of 2954.36W/kg.
The implementation of smart city through android-based device : ”Klaten Smart City Application”
Authors: Sari A D , Rachmawati R 
Published: March 2021

Abstract
Klaten is one of regions that elected in the movement towards 100 smart cities in Indonesia launched by The Ministry of Communication and Informatics. Due to this movement, an in-line application is created, particularly for Klaten regency which is named Klaten Smart City Application. Klaten Smart City Application is an Android-based device that can be downloaded via Google Play. This paper aims to identify the features of Klaten Smart City Application and to identify opinion of the Klaten government towards the development of Klaten Smart City Application. This research uses a qualitative method. The primary data was obtained from in-depth interview with representative of The Klaten Informatics Communication Department. The secondary data was obtained by direct exploring Klaten Smart City Application. Based on the result of this research, Klaten Smart City Application has 27 features. The opinion from Klaten Informatics Communication Department about Klaten Smart City Application is graphically perfect, it is a good application because it displays the mapping of several services in Klaten.
Wetness over the China mainland under the 1.5°C global warming in a regional climate model ensemble
Authors: Zhang Zhongyi 
Published: March 2021

Abstract
The study examines the wetness over the China mainland under the 1.5°C global warming using the 3-monthly Standardized Precipitation Index (SPI) based on an ensemble of CORDEX regional climate models. Results indicate that the Northwest China is characterized by more severe wetness than the other subregions. And the winter shows the largest wetness among the four seasons, especially for North China, Northeast China and Northwest China, with the ensemble mean and median of their regionally averaged SPI showing abnormally wet.
Electrohydrodynamic thrust with no combustion emissions and noises in a centimeter-scale point-to-grid configuration
Authors: Leng Jiaming , Liu Zhiwei , Zhang Xiaoyong , Huang Dawei , Huang Jianmei , Qi Mingjing , Yan Xiaojun 
Published: March 2021

Abstract
Alternative propulsion systems are needed to overcome the combustion emissions and noises caused by the fossil-fuel combustion-based gas turbines and propeller-driven propulsion systems. The electrohydrodynamic (EHD) thrust produced by the corona induced ionic wind is an attractive choice because its generation needs no mechanical moving part and emits no combustion emissions and noises. In this investigation, the electrohydrodynamic thrust provided by the positive point-to-grid corona discharge at the centimeter scale is theoretically and experimentally analyzed. The previous one-dimensional theory is reviewed to understand the fundamental characteristics of the EHD thrust. The thrust performance of a 4.1 mg, centimeter-scale, laser-micromachined EHD thruster is experimentally quantified. The measured thrust reaches up to 0.68 mN, corresponding to a thrust density of 8.7 N/m2, a thrust-to-weight ratio of 17 and a thrust-to-power ratio of 2.1 N/kW.
Effect of salinity on the community structure and ecological functions of Archaea in Liaohe Estuary
Authors: Shi Yinyin , Ming Hongxia , Ji Fengyun , Shi Tingting , Jin Yuan , Su Jie , Fan Jingfeng 
Published: March 2021

Abstract
Archaea plays an important role in biogeochemical processes. Using the quantitative polymerase chain reaction (qPCR) and Illumina high-throughput sequencing, eight sediment samples collected in Liaohe Estuary were used to investigate the effects of salinity gradient on the archaeal community structure and ecological functions. The results showed that archaeal abundance ranged from 5.1 × 105 to 1.3 × 106 copies/g. Archaeal community included the classes of Thaumarchaeota (69%), Euryarchaeota (29%), and Crenarchaeota (0.01%), respectively. Methanogens in the genera Methanococcoides, Methanoregula, and Methanosaeta and Marine Group I, Candidatus Nitrososphaera, and Nitrososphaera within the ammonia-oxidizing archaea were abundant in freshwater sediments, whereas Marine Benthic Group B and Marine Benthic Group D were abundant in seawater sediments. The positive correlation was observed in between the abundances of Euryarchaeota and salinities (P < 0.05). Physico-chemical analysis in the sediments showed that the temperature and salinity were impacted on the abundance and distribution of archaea significantly (P < 0.05). In general, these results have broadened our understanding on the changes of the archaeal abundance and community structure in estuarine sediment along the salinity gradient.
Study on the mechanism of the increase/inhibition of nitrate ammonium by the ways of ecological restoration in the Pearl River Estuary
Authors: Guo Wei , Jiang Ran , Zhang Xinfeng 
Published: March 2021

Abstract
This paper studies the bottom sludge and water of fishing ports near Yamen Waterway in Taishan City, and Xi-Nanyong Riverway in Foshan City, which are one of the most polluted areas in the Pearl River Estuary. By changing different ecological repair methods, we have studied the changing trend of nitrate nitrogen ammonium ∼ anaerobic ammonia oxidation ∼ denitrification pathway, and clarified the fate of nitrogen from the macroscopic view; we have established a continuous culture flow simulation device, which can Clarify the weight of ammonia nitrogen, which is generated by ammonium nitrate nitrogen. We changed the water quality parameters and concentration during the operation of the continuous flow device, including salinity, temperature and dissolved oxygen, aeration, flow rate, ammonia nitrogen, nitrate nitrogen, etc. We analyzed the relationship between the conversion rate of ammonia nitrogen and environmental factors. We obtained the DNRA rate through a continuous flow device. We analyzed the effects of different removal methods on nitrogen removal. The research results show that under the environment of salinity (0.48ppt), higher dissolved oxygen, lower temperature, higher ORP (greater than 300mV), it is conducive to the discharge of reactive nitrogen. On the contrary, the rate of ammonia nitrogen generated by DNRA increases, the max is 19nmol/(g h). making Nitrogen stays in the water. This conclusion can provide a theoretical basis for the accurate evaluation of the denitrification effects and the effectiveness of the methods for ecological restoration of the Pearl River Estuary and other similar estuaries.