bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effect drying process of white turmeric herb (Curcuma mangga) on antioxidant activity
Authors: Indis N A , Kurniawan F 
Published: May 2024

Abstract

Curcuma mangga is one of the herbal rhizome plants. It has good benefits as Curcuma longa, and it has advantage of having aroma like a mango. This study aims to determine the effect of drying process of Curcuma mangga herb toward antioxidant activity. There are eight drying variations (oven drying at 50, 60, 70, 80 and 90°C, sun drying, room temperature, and freeze drying). Extraction of Curcuma mangga powder was carried out by maceration using aquadest, this study didn’t used organic solvents because the solvent for herbal drink is water (aquadest). Curcuma mangga extract was analysed for its stability in room temperature, FTIR analysis, and antioxidant activity analysis using 0.02% DPPH. The entire process in this research was replicated three times and average results were obtained. Based on the results, it can be seen that Curcuma mangga extracts are not stable at room temperature (maximum at 6 hours). Based on spectra FTIR results, Curcuma mangga extracts have polar functional group because the solvent used for extraction is aquadest which is polar solvent. The best antioxidant activity results (%AA) of Curcuma mangga is vacuum freeze drying process with an IC50 value 106.95 ppm, it was classified as a moderate antioxidant.
Improving the quality and toxicity of rice husk liquid smoke to control edamame soybean pests
Authors: Syarief M , Erdiansyah I , Utami C D , Arini S F M 
Published: May 2024

AbstractPurpose of the research to improve the quality and toxicity of husk charcoal liquid smoke which is effective and selective in controlling edamame soybean plant pests, safe for predatory and pollinators arthropods, and does not contain the dangerous compound Benzo(a)pyrene. The resulting product can be used as a substitute for synthetic insecticides which are non-selective and unsafe for predators, pollinators and human health. The technique used was to set the temperature of the pyrolysis process between 200-300°C to produce grade 3 and distillation of grade 3 to grade 2 with a temperature of 80-100°C. Research was carried out at Jember State Polytechnic, from August to September 2023. The observation parameters were content of grade 3 and grade 2 compounds using GCMS, Bioassay tests againstS. litura3rdinstar using concentrations of 0%, 1%. 2%, 3%, 4% and 5% each for 10 test insects, with 3 repetitions, using the feed immersion method. LC50and LC95test used PoloPlus 1.0. Field tests compared arthropod diversity, grade 3, grade 2 and Imidacloprid treatments, using the Kruskal-Wallis test. The diversity index uses the Shannon-Wiener (H’) and Sympson Dominance Index (C’) formulas. Conclusion LC95grade 3 was 3%, Grade 2 was 4%. Both were not found Benzo(a)pyrene. The grade 3 pest population was not significantly different compared to Imidacloprid. Grade 3 and grade 2 predators and pollinators were higher than Imidacloprid, the diversity of Grade 3, grade 2 and Imidacloprid treatments were moderate diversity, balanced ecosystem and no species dominance found.
Innovation of Traditional Culinary Lemuru Fish with Yellow Spices Using Canning Technology at Fish Canning Teaching Factory Politeknik Negeri Jember
Authors: Adhamatika Adhima , Wijaya Rizza , Kurnia Novita Sari Elok 
Published: May 2024

Abstract
Canned fish is one of TEFA Fish Canning’s products that has potential in Indonesia, however consumption of canned fish in Indonesia is still relatively low than the other countries. One of the problems that often occurs with canned fish products from TEFA Fish Canning is the lack of product variations are limited only to tomato and chili sauce. One of the canned fish that has the potential to be developed is lemuru fish with yellow spices in cans by combining canning technology and a touch of typical Indonesian processing in yellow spices. The objectives of the research were (a) to see the formulation and nutritional value of yellow spiced lemuru fish products in canned packaging, (b) to assess the product’s sensory quality to determine market acceptance, and (c) to determine the best yellow spiced lemuru fish formulation using the Multiple Attribute method. This research was carried out using a Completely Randomized Design (CRD) with 5 formulations of yellow spiced lemuru fish being tested including lemuru fish with pesmol seasoning, lemuru fish with rujak seasoning, lemuru woku fish, lemuru fish with rujak basil seasoning, and lemuru fish with pesmol basil. The parameters tested include physical, chemical and organoleptic characteristics. Parameters for determining the best treatment include color (L*, a*, & b*), pH, salinity, hedonic test (aroma, color, taste, texture, & overall) and hedonic quality test (aroma, color, taste, texture, & whole). The test results show that canned yellow spiced lemuru fish with formulation 3, namely woku lemuru fish, is the sample with the best parameter attributes, namely with values L* = 50.88, a* = 29.03, b* = 54.23, pH = 6, 32, salinity = 1.09, hedonic color = 4.24, aroma = 3.92, taste = 3.68, texture = 3.84, and overall = 4.20. The final results will show yellow spiced lemuru fish as a new canned fish product at TEFA Fish Canning with a recommended shelf life that has been tested using Arrhenius Method. Based on the Arrhenius test, canned lemuru fish with yellow spices can be stored at 30°C for 224 days. The novelty brought about in this research is the formulation of yellow spiced lemuru fish products in cans which can be used as a new product for TEFA Fish Canning as a solution to the problem of minimal product variety.
Research on the Characteristics of Water Based on Big Data of Automatic Pond Reservoir System
Authors: Destarianto P , Wibowo N S , Wijanarko D 
Published: May 2024

Abstract
In shrimp cultivation, water is one of the crucial components in the cultivation process, as evident in several aspects such as oxygen, pH, and temperature. The recommended range for good oxygen levels is between 3 and 7, pH should be in the range of 7 to 9, and the temperature should be maintained between 24.5 ℃ and 31.9℃. To achieve optimal results, we use fuzzy logic as a controller for the existing system. After obtaining data from the aforementioned sensors, with the assistance of fuzzy logic, control will be implemented to maintain an optimal environment using fuzzy logic. With the aid of this fuzzy logic, accuracy up to 90% can be achieved with approximately 290 data points.
Optimizing the ratio of raw materials and pH on biogas production from cow manure with banana peel waste in batch system reactors
Authors: Faizin N , Ulma Z , Rachmanita R E , Wibowo M J , Anwar S 
Published: May 2024

Abstract
Politeknik Negeri Jember has dairy cows TEFA which produce relatively large amounts of cow dung waste, namely 280 kg per day. The fecal waste is directly thrown into waterways, causing air pollution, namely causing an unpleasant odor. It would be interesting to conduct research on cow dung waste in TEFA of dairy cows. This research was carried out with the aim of utilizing cow manure which is waste in TEFA dairy cattle as raw material for biogas with a mixture of banana peel waste as a substrate. In this research, a batch system reactor with an anaerobic fermentation method was used. The variables used were the ratio of cow manure to banana peel waste with variations of 1:1, 1:2, 1:3, and the pH variable variations of 6, 7, and 8. The test parameter observed in the research was the volume of biogas. The experimental design used to determine optimum conditions is the Response Surface Method (RSM). The experimental design was carried out on 2 variables with 3 variations so that 9 data points were obtained. Based on the test results, it is known that the optimum conditions for the variable ratio of cow dung to banana peel waste and pH are 1:3 and the pH variation is 6, where the volume of gas produced is 177.8 ml.
Analysis of the supply of the agricultural sector in Ecuador during the COVID-19 pandemic, 2018-2021
Authors: Villavicencio-Córdova X A , Garzozi-Pincay R F , Acosta-Lozano N V , Castillo-Burbano J L , Garzozi-Pincay Y S , Correa-Soto S R , Sánchez-Vera J M , Herrera-Villamar J D 
Published: May 2024

Abstract
The purpose of this research is the economic estimate that was presented in the supply of the agricultural sector due to COVID-19. The agri-food chains maintained their activities since their products are of great importance. Benefits were estimated for the farmer, since the prices of inputs and agrochemical products decreased considerably, reducing production costs, during the period from January 2018 to April 2021, through the application of a Linear Regression Model with polynomial trend. Finally, the study has an approach based on the supply performance of the agricultural sector during the period of confinement caused by the COVID-19 pandemic, and at the same time recognize the positive or negative economic impact that the production and marketing of the sector has achieved in recent times.
Stratigraphy of Jaten Formation based on palynology and sedimentology analysis in Dongko Area, Trenggalek, East Java
Authors: Istiana  , Rachman M G , Ardine J E , Mustav I D , Alfinna F D S , Rohaman M 
Published: May 2024

Abstract
Jaten Formation is located in the Southern Mountains of the eastern part of Java island. East Java is known as one of the largest provinces in Indonesia for oil and gas production. However, the exploited areas have primarily been in the northern part of East Java. The Southern Mountains region shows several indications of potential oil systems, such as shale outcrops in the Jaten Formation. This research aims to understand the stratigraphic characteristics of the Jaten formation using a palynological and sedimentological analysis approach.
The palynological analysis result determined that the age of the Jaten Formation in the study area is estimated to be the upper part of Early Miocene to Middle Miocene, deposited in a back mangrove to mangrove environment. This determination is based on the first appearance datum of the Stenochlaena areolaris in the bottom sample (1) and the first appearance datum of the Florschuetzia meridionalis in sample 4. An increased proportion of taxa Acrostichum aureum, Calophyllum type and Spinizonocolpites echinatus characterizes the back mangrove environment. The mangrove environment is characterized by an increased proportion of taxa such as Florscuetzhia trilobata, Florscuetzhia meridionalis, Florscuetzhia levipoli Rhizophora sp, Exoecaria agallocha and Avicennia type. The increased proportion of Rhizophora sp pollen primarily influences the high proportion of mangrove taxa. Mangroves with Rhizophora sp as their main component are usually found around river estuaries and in areas with periodic influence from the sea, such as lagoons or bays. Based on the sedimentology and palynological analysis, the formation was deposited in mangrove-backmangrove environment.
Preliminary study of waste storage ponds delineation area in the Ungaran Geothermal Mining working area, Semarang, Indonesia
Authors: Mardiati D , Humairoh W A , Putra I P R A 
Published: May 2024

Abstract
The Gedongsongo and Nglimut areas have the potential for Indonesian geothermal exploration projects. One of the problems of the PLTP sector is producing geothermal waste in the form of brine, and geothermal mud can endanger human health and ecosystems. This study aimed to determine the best zone for waste storage ponds in this prospect area. The method integrates DEM and Landsat data analysis, producing Maps of Slopes and Lineaments to delineate the best area for making ponds. There are several parameters for determining the pond-making zone: area with a slope of less than 15%, distance from the fault is more than 200 m, and distance from areas of geothermal manifestations such as hot springs and fumaroles is more significant than 200 m. This analysis results in four delineation zones suitable for creating waste storage ponds. In the Nglimut area, there are N1 and N2; in the Gedongsongo area, there are G1 and G2 as potential zones. The best zones were N2 and G1. Locations N1 and G2 are fair zones because the eastern area of G2 is 200 m from the fault, and the northern region of N1 is close to the hot spring.
Engineering geology capability for tourism on the Cucukan River Prambanan Klaten Central Java
Authors: Aji Dwi Kristanto Wisnu , Dzaki Wirayuda Bramantio , Trianda Obrin 
Published: May 2024

Abstract
The community’s need for tourism has increased with the new culture, namely healing. This was caught quickly by tourism entrepreneurs to compete to build new tourist attractions. The river is one of the interesting objects for tourism. Besides the natural potential, the river can be developed as water tourism such as fishing and various water games. However, this potential is accompanied by the potential danger that can be caused by the river itself and its surroundings. Therefore, it is necessary to investigate the engineering geology to ensure the capability of the river area to support tourism. The Cucukan River has tourism potential which has been used as an arena for fishing and regular water games. However, this river area is composed of loose material from clay-sand with water flows that often overflow at the peak of the rainy season. So it is necessary to conduct research related to the capability of engineering geology for tourism. The research was conducted by observation and mapping based on the principles of engineering geology, eight parameters of engineering geology capability consisting of: rock and soil bearing capacity, slope, geological disaster potential, ease of excavability, groundwater level, land use, rock weathering degree, and fracture density fields. The results showed that the engineering geology capability for tourism Cucukan River area is divided into three zones, namely: high capability zone, medium capability zone, and low capability zone.
Identification of landslide vulnerability in the Sendangsari Area, Pajangan District, Bantul, Yogyakarta based on the Weighting Method of Regulation of the Minister of Public Works No. 22/PRT/M/2007
Authors: Arrisaldi T , Bima M A A , Yudaputra A M , Bisatya B , Nur A , Yuliana T , Putri N R , Wahyuningtyas D 
Published: May 2024

Abstract
Dusun Krebet, in the Sendangsari Village, sub-district of Pajangan, Bantul regency, is one of the villages situated in a limestone hill area. Due to its location in the hilly terrain, both morphologically and in terms of its geological composition, the Krebet village has the potential for and is at risk of landslides. This research identifies areas that fall into the category of landslide-prone disaster zones using the Weighting Method specified in the Indonesian Minister of PUPR Regulation No. 22/PRT/M/2007. The determination of landslide-prone disaster zones is based on seven parameters, which are slope, geological conditions, land use, water flow density, soil thickness, rainfall conditions, and seismic activity map overlay is conducted with the assistance of weighting based on the Indonesian Ministry of PUPR regulations, which represents a subjective factor according to the researcher’s perspective in the study area. This process results in two risk zones: low landslide risk and medium landslide risk. The research based on the Ministry of PUPR Regulation No. 22/PRT/M/2007 indicates that the Pajangan District is predominantly characterized by a low level of vulnerability to landslide disasters, with only a small area falling into the moderate vulnerability category. This is because the regulation places greater emphasis on the potential damage to infrastructure and does not give as much attention to disaster mitigation aspects that need to be implemented.
Application of Natural Surfactant from Morus alba, Soapnut, Sapindus rarak for Enhanced Oil Recovery – Critical Review
Authors: Maulida Fajri , Taufiq Fathaddin Muhammad 
Published: May 2024

Abstract
This literature discusses the importance of green surfactants in the oil and gas industry as one of the injection types in EOR. The use of green surfactants is good for protecting the environment and marine biodiversity from conventional chemical surfactants. The injection of green surfactants uses natural materials from Soapnut, Mulberry, and Sapindus rarak. These three types of plants are abundant in Indonesia and contain saponin as a material in making good surfactants. Saponin is an amphipathic glycoside that can produce foam when shaken vigorously in a solution. The foam produced by saponin can increase the sweep efficiency in oil wells to increase production. The writing method used in this article is based on scientific literature that discusses the characteristics and physical properties of Soapnut, Mulberry, and Sapindus rarak. The IFT calculation for Soapnut between water and oil reduced from 19 dyne/cm to 2.5 dyne/cm as the surfactant concentration increased from 0 to 12 (w/w%). Mulberry from 43.9 to 17.9 dyne/cm and Sapindus rarak from 3.07 mN/m to 0.96. These natural surfactants enhance water flooding efficiency by 19.6% OOIP, reduces shale contact angle from 52.44 to 19.66, emphasizing natural surfactants oil recovery potential with environmental benefits.
Geotourism in Mount Pandan and Bledug Kuwu Hotspring as a potential resources for community development
Authors: Martasari R D , Pambudi S , Haty I P , Yoni D R , Afrilita  , Farizzi M I A , Santosa W B , Lukita A D , Riyadurrizqy M S 
Published: May 2024

Abstract
Mount Pandan and Bledug Kuwu are popular tourist attractions in the central part of Java Island. Each location has an object that can be analyzed as a geotourism potential, as the manifestation of hot springs. These results indicate that Bledug Kuwu Mud Volcano, Crewek Hot Spring, Banyu Kuning Hot Spring, and Jari Kasinen Hot Spring sites can be geotourism-based tourist objects. Mount Pandan and Bledug Kuwu sites need to be improved in several aspects, especially in terms of infrastructure. Parameters that need to be considered for all objects are conservation values due to disaster risk factors that already exist and disaster risk factors that are still potential and have yet to occur, such as volcanic eruptions and landslides, as well as the process of destruction that appears in several objects that can threaten the sustainability of tourist sites. In addition, it is necessary to increase the understanding of residents and visitors who come about geological information related to the formation of hot springs, both in the form of information boards posted around the site and information displayed on local websites.
Carbon capture storage and carbon capture utilization storage as energy transition strategy for the Indonesian oil and gas sector towards net zero emissions
Authors: Handaja S , Dewi A K , Triyanto R H 
Published: May 2024

Abstract
The transportation and industrial sectors are the backbone of the Indonesian economy. These two sectors can grow and develop because of the support of energy from oil and gas or electricity from fossil sources. Meanwhile, energy from fossil sources, especially oil and gas, is one source of CO2 emissions that must be reduced. The Indonesian government continues to increase oil and gas production to meet domestic needs. On the other hand, the government is also trying to reduce emissions towards Net Zero Emissions by 2060 in line with the ratification of the Paris Agreement, with a target of reducing emissions by 314 million tons of CO2e in 2030 and 1,526 million tons of CO2e 30 years later. This condition is certainly a challenge for the government and the national oil and gas sector to achieve this target, the government has presented several strategies to boost upstream oil and gas investment while meeting the NZE target. Carbon Capture Storage and Carbon Capture Utilisation and Storage are one of the technologies of choice in the oil and gas sector in the energy transition period towards NZE. This strategy was chosen because it has great potential in carbon capture and can be used to increase oil production. The application picks up after 2025, with the amount of CO2 captured potentially 6 million tons annually in 2030 and reaching around 160 million tons annually in 2060.
Enhanced fluorescence blinking of AF647 fluorophores in Mowiol via violet and UV light induced recovery for superior localization microscopy
Authors: Bharadwaj Anupam , Kumar Amalesh , Mitra Rumela , Jaganathan Bithiah Grace , Boruah Bosanta R 
Published: May 2024

Abstract
Blinking of fluorophores is essential in the context of single molecule localization-based optical super-resolution microscopy methods. To make the fluorescence molecule undergo blinking specific complex chemical mounting buffer systems, combined with suitable oxygen scavengers, and reducing agents are required. For instance to realise blinking in widely used fluorescence tags, like Alexa Fluor 647 (AF647), they are to be mounted on anti-fading buffer such as Mowiol and reducing agent such as Beta (β) - ME. However, the quality of the super-resolved images is decided by the total number of blinking events or in other words net duration for which the fluorescence blinking persists. In this paper we investigate how a violet and UV light induced fluorescence recovery mechanism can enhance the duration of fluorescence blinking. Our study uses AF647 dye conjugated with Phalloidin antibody in U87MG cell line mounted on Mowiol and β - ME. On the basis of the investigation we optimize the intensity, at the sample plane, of fluorescence excitation laser at 638 nm and fluorescence recovery beam at 405 nm or in the UV giving the maximum possible fluorescence blinking duration. We observe that the longer blinking duration, using the optimized illumination scheme, has brought down the resolution in the super-resolved image, as given by Fourier Ring Correlation method, from 168 nm to 112 nm, while the separation between two nearby resolvable filaments has been brought down to ≤ 60 nm.
Electrochemical determination of theophylline using a nickel ferrite/activated carbon-modified electrode
Authors: Thanh Nguyen Mau , Nam Nguyen Giang , Dung Nguyen Nho , Le Van Thanh Son , Thu Phan Thi Kim , Man Nguyen Quang , Phong Le Thi Hong , Binh Nguyen Thanh , Khieu Dinh Quang 
Published: May 2024

Abstract
In this work, a nanocomposite based on nickel ferrite/activated carbon (NiF/AC) was used to modify a highly sensitive electrochemical sensor for the quantification of theophylline (TPL) in pharmaceutical tablets. The synthesized materials were characterized using x-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy, energy dispersive x-ray spectroscopy-elemental mapping and surface area analysis via the Brunauer–Emmett–Teller method. Cyclic voltammetry was employed to study the electrocatalytic properties of the NiF/AC-GCE toward the oxidation of TPL. The dependence of the electrochemical response on the scan rate and pH was also investigated, and the working parameters were optimized. The linear range of the established electrochemical biosensor was from 0.5 to 5 μM (R2 = 0.997), with a detection limit of 0.21 μM. The present method was tested using three pharmaceutical formulation standard samples with good accuracy and acceptable recovery. Thus, it is a promising candidate for the determination of TPL in pharmaceutical formulations.