bluuebunny/crossref_metadata_2025_split huggingface dataset:
The effect of biological fertilizer application on soil fertility, heavy metals reduction and eggplant yield on the rice field of Bantul regency
Authors: Riyanto D , Afriani R , Srihartanto E 
Published: April 2021

Abstract
Biofertilizer contains microorganisms which promote the adequate supply of nutrients to the host plants and ensure their proper development of growth and regulation in their physiology. They are in being promoted to harvest the naturally available nutrients and biological system of nutrients mobilization. This research aims to determine the effect of Silitech biofertilizers on soil fertility, heavy metal reduction and eggplant yields. The study was conducted in Piyungan District–Bantul on dry season of 2019. Research design was used a Randomized Complete Block Design with 7 treatments and 4 replications. Each treatment was applied in a plot size 8 m x 1.2 m and given a plastic mulch. The kind of treatments are: P0 (Control), P1 (100% NPK based on fertilizer recommendation), P2 (100% Biofertilizer), P3 (Biofertilizer + 25% NPK), P4 (Biofertilizer + 50% NPK), P5 (Biofertilizer + 75% NPK), P6 (Biofertilizer + 100% NPK). The result of study showed that application of Biofertilizer +75%NPK had a significant effect on increasing eggplant yield., dry plant biomass and the levels of C, N, P and K about 26,92 - 32,76% compare to the control treatment as well as increasing some micro elements, such as Ca, Mg, B, Zn and Mo compared to the treatment that given only 100% biological fertilizer and Biological fertilizer + 25% NPK but it was not significantly different from the application of Biological fertilizer + 100% NPK. Moreover, The Silitech biofertilizer also can reduce the levels of heavy metals content of Hg, Pb and Cd as much as 30.76-46.15%, 29.45-39.81% and 35.1-47.5% respectively. which indicated by the decreased their content after harvesting eggplant.
The production of pak choy (Brassica rapa L) based on cleaner coffee production
Authors: Kasutjianingati  , Wahyono A , Brilliantin A , Sari E K N , Prayitno  
Published: April 2021

Abstract
The environmental damage that is happening in Indonesia is getting bigger. Industrial activity waste is becoming more and more and creates pollution. The waste reduction process strategy can be done by collaborating, between agronomic technical applications and clean production. The purpose of this writing shows that the clean production process in the coffee industry can be collaborated through the development of healthy vegetables through the use of coffee waste after processing it into by-products (compost and liquid fertilizer). Hope can provide knowledge and an overview for the coffee farming community on how to apply this clean production concept to their industry. The production process is clean through energy efficiency and will ultimately result in minimization of useful waste again. The experiment used a randomized design. Treatment groups consisted of: the first composition (NPK compound fertilizer + Nasa liquid fertilizer + coffee compost); The second composition (NPK compound fertilizer + coffee waste liquid fertilizer + coffee compost); The third composition (liquid Nasa fertilizer + coffee waste liquid fertilizer + coffee compost). Growth variables consisted of plant height, number of leaves and leaf width; Production variables consist of weight / plant and weight / plot. The results obtained by the utilization of coffee production waste (coffee husk compost and coffee waste liquid fertilizer) are recommended to support clean coffee production, able to increase Pak Choy’s (Brassica rapa L) production per sample and area.
Utilization of javanese ginseng and citronella for insect diversity in Pace village, Jember regency
Authors: Erdiansyah I , Eliyatiningsih E , Sari V K , Nurahmanto D 
Published: April 2021

Abstract
This study aims to identify the diversity of insects in two species of herbal plants, namely Javanese ginseng and citronella in an attempt to initiate herbal plants which function as refugia which will be applied to agricultural plant cultivation. This research was conducted from May to June 2020 in Dusun Curah Wungkal, Pace Village, Silo District, Jember Regency. Sampling was done by purposive sampling, namely by taking insects on herbal plants using a sweep net. Sampling was carried out 4 times with intervals of 2 weeks. Insect diversity was analyzed using the Shannon Weiner diversity index and Dominance index. The differences between the observed parameters were analyzed using non-parametric statistics using SPSS version 15.0 software. The results showed that the number of insect abundance based on the Shannon-Wiener Index (H ’) in Javanese ginseng was higher than that of citronella plants (2.124 ± 0.102> 1.163 ± 0.282). For the species dominance level (C) it is classified as a medium category and the value of Javanese ginseng is higher than that of citronella plants (0.141 ± 0.014> 0.432 ± 0.124). This condition indicates that the ecosystem of Javanese ginseng and lemongrass herbal plants, the diversity of insects, is in a fairly balanced condition.
Virulence of Spodoptera Litura Nuclear Polyhedrosis Virus (SLNPV) with kaolin as carrier material on spodoptera litura and tetragonula laeviceps on soybean
Authors: Erdiansyah I , Syarief M , Taufika R 
Published: April 2021

AbstractThe objective of research is determined the virulence of different concentrations of SlNPV-JTM 97C with kaolin as carrier material onS. litura and T. laevicepsmortalityon soybean. The Research was conducted in Plant Protection Laboratory of State polytechnic of Jember, from June to September 2020. The lethal concentration (LC50and LC95) SlNPVusing Polo Plus 1.0, with the IRAC version 3, method number 008. TheS. lituramortality test used Completely Randomind Design with 5 treatments and 3 replications. The treatments were contamination of larvae diet by SlNPV with control (the third instar larvae without contamination SlNPV), 0,1%, 0,2%, 0,3% and 0,5%. These concentrations are equivalent to the concentrations of 0.1.2x 108PIBs/g, 2.4x 108PIBs/g, 3.6 x 108PIBs/g and 6.0 x 108PIBs/g, respectively. Each test was repeated three times. Mortality percentage of larvae were observed as experiment data. Those data were analyzed by Analysis of Variant and Least Significant Difference (LSD) 5%. SlNPV virulence test againstT. laevicepsusing a concentration that can causeS. lituramortality ≥ 70%. The results of the research indicated that LC50of SlNPV with kaolin as carrier againstS. litura3rdinstar was 0.2%, LC95was 0.5%, effective concentration of SlNPV to controlS. litura3rdinstar was 0.3% to 0.5%, SlNPV concentration at 0.3% to 0.5%, non-toxic toT. laeviceps.
Dose treatment of legume compost with the number of plants per planting hole for land efficiency and increasing sweet corn production
Authors: Kusparwanti T R , Eliyatiningsih E 
Published: April 2021

Abstract
Sweet corn requires large nutrients for growth and production. Legume compost can be used as fertilizer to fulfill nutrients that are beneficial for plant growth. The use of legume compost can substitute NPK elements which function for plant growth. Other efforts that can be made to increase sweet corn production due to the narrowing of agricultural land are to increase the plant population, which is usually 1 plant per planting hole can now be added to 2 to 3 plants per planting hole. The purpose of this study was to determine the best dosage combination of legume compost with the number of plants per planting hole. The research was conducted in an experimental field in Politeknik Negeri Jember. The study was conducted using a factorial randomized block design (RBD) with 2 factors, namely the dose of legume compost and the number of plants per planting hole. From this study there were 9 treatment combinations and 3 replications so that there were 27 experimental units. Anova test results showed that the treatment of legume compost dosage and the number of plants per planting hole had no significant effect on the parameters of plant height, number of leaves, corn cob length, corn cob weight, corn cob diameter, and sweetness level, but had significant effect on the parameter of corn cob production per unit observation.
The increasing fertility of sandy soil and chili production through the application of organic fertilizers, zeolite and cane blotong
Authors: Sukri M Z , Firgiyanto R , Sugiyarto  , Rohman H F 
Published: April 2021

Abstract
The aim of the research was to determine the increase in soil fertility and chile production on sandy soils due to the effect of giving organic matter, zeolite sand and cane blotong. The research started in May-November. The research was conducted in a greenhouse using a completely randomized design. The treatments given were the dosage of organic fertilizer (20 and 40 tonnes ha-1); the zeolite doses (20 and 40 tonnes ha-1) and cane blotong (20 and 40 tonnes ha-1). The observation variables included the level of soil fertility before and after and the chili production variable. The results of this study were the application of organic fertilizers, zeolites and cane blotong increased physical and chemical properties of sandy soil occurred after treatment. The effect of various treatments was only able to increase chili/fruit weight and chili fruit diameter, whereas zeolite was only able to increase the weight / plant of chilies and the number of chilies.
Emission characteristics and fuel consumption of biodiesel obtained from fish canning industry waste in agriculture diesel engine
Authors: Udin A R A , Zain A T 
Published: April 2021

Abstract
Increasing the need for fuel oil is something that can’t be avoided, while the supply of fossil fuels is running low. Biodiesel is one of the right solutions to overcome this problem. This vast ocean in Indonesia, makes Indonesia the potential to create biodiesel from fish canning industry waste. The purpose of this research is to analyze the effect of dexlite fuel mixture with biodiesel from fish canning industry waste on fuel consumption and exhaust gas opacity in agriculture diesel engines. This type of research uses experimental research. The object of this research is the exhaust emissions and fuel consumption. The results of the study obtained by the researchers are the results of mixing dexlite of Pertamina (gasoil/high speed diesel oil) fuel with biodiesel of fish waste oil to be used in diesel engines. The highest exhaust gas opacity results in a mixture of 70% dexlite with 30% biodiesel (B30) of 2.6% at 1000 RPM (± 5). The results of the test fuel consumption that most quickly runs out occur in pure dexlite for 131 seconds in 10 ml of fuel at 1000 RPM (± 5). The results of testing the exhaust gas opacity level are increasing, as well as the results of testing fuel consumption which is increasingly economical, due to the high water, carbon and ash content in biodiesel.
Stuck pipe optimization using duellist algorithm
Authors: Biyanto T R , Cordova H , Matradji  , Anggrea T O , Suryowicaksono H , Irawan S 
Published: April 2021

Abstract
Stuck pipes are one of the most serious drilling problems, stuck pipes can cost the oil industry hundreds of millions of dollars per year. One way to avoid the risk of a stuck pipe is to predict the condition of a stuck pipe with the available drilling parameters. Throughout the years, a lot research has been dedicated to finding the causes that lead to stuck pipe events. But it still not reached the study in the calculation of the optimization of drilling operation costs. In this final project, Artificial Neural Network (ANN) is used for prediction stuck pipe and optimized using the Duellist Algorithm (DA). As well as Increasing fewer data that will get easier to make it in to the model. In this model, it use 1 The input layer contains 12 input nodes, 14 hidden layers trained with 1 to 30 hidden nodes, and 1 output layer in 14 hidden layers with an RMSE value of 0. At the end of the optimization, the lowest cost is USD 17300 / hour at RPM 195, 69, and mudflow 722.28 GPM. As well as constraint conditions are maintained and not stuck.
Utilization of field seismometers for measuring the paraseismic vibrations of mining blasts
Authors: Molinek O. , Vokurka M. , Mokrosova A. , Kotrbanec J. 
Published: April 2021

Abstract
The Hrabuvka Quarry was one of the quarries on which the seismic effects were measured when performing large-scale blasting operations – bench blasting. These measurements were carried out as part of a university project to investigate further unfavourable seismic effects of blasting operations with respect to the type of ignition and explosives used. The aim of this article is to determine whether during the large-scale blasting operations from April to June 2019 vibration speed values were measured, which could have adverse effects on quarry structures and to propose a suitable solution to reduce these values, for example by changing the type of ignition from non-electric to electronic and by changing the ignition timing of individual charges.
Models and algorithms of choice of development technology of deposits when selecting the composition of the backfilling mixture
Authors: Kongar-Syuryun Ch. , Ubysz A. , Faradzhov V. 
Published: April 2021

Abstract
The analysis of the applied development systems in the extraction of minerals is carried out. The main problems arising during the development of mineral deposits are formulated. A method is proposed that allows solving the problem of choosing a technology for developing a mineral deposit and selecting a rational composition of a filling mixture for given filling parameters. The structure of the methodology includes fuzzy models and algorithms that ensure the processing of large amounts of information, form the significance of environmental factors (organizational, mining and geological, production, technical and economic indicators), design and technological parameters of the development system and allow to establish the main interdependencies between them, which, in contrast to the existing ones, allow assessing the integral indicators of the project already at the first stages of selecting the composition of the filling mixture. A structural representation of a design solution model for the development of a mineral deposit is formulated, built on the basis of a system analysis and formalization of mining, geological, technological and external conditions of the deposit, which makes it possible to provide a comparative assessment of the integral indicators of projects. The information structure of the project variant is also recommended. To consider the influence of each factor in the algorithm, it is proposed to apply the coefficient of significance of technical and economic performance indicators.
Preliminary research to determine the thermal condition of the belt conveyor’s drive unit in an underground hard coal mine
Authors: Stempniak M. , Zhironkin V. , Trzop K. , Szurgacz D. 
Published: April 2021

Abstract
The paper presents preliminary research conducted to determine the thermal condition of the main belt conveyor transporting coal from the longwall. The results show the thermal condition of the conveyor and in the further stage are used to effectively diagnose possible causes of damage to the belt conveyor’s drive unit. The tests were performed on the conveyor whose operation is strategic to the mine. The research comprised a thermal imaging camera that allows taking contact-free measurements. The main purpose of a thermal imaging measurement is to detect changes in thermal conditions without the need to stop the conveyor belt. The paper presents the methodology and discusses the manner of performing underground measurements as well as a procedure for processing the results. The final conclusions concerning the technical condition of the drive unit were based on the results and their analysis.
Increasing the stability of mine stopes by injection hardening of the near-contour mass
Authors: Melnik V. , Grechishkin P. , Gornostaev V. , Shcherbakov V. 
Published: April 2021

Abstract
The possibility of improving the mechanization of strengthening the near-contour mass of stope is considered. Variants of improving the supply of injection solution into the mass are proposed, various technological schemes for supplying the injection solution into the near-contour mass are considered, and an optimal injection scheme is proposed. A classification of injection solutions is made in terms of the possibility of their use in rocks of different stability and injection technology.
Analysis of historical changes in the limit value of nitrogen oxides concentrations for underground mining
Authors: Banasiewicz A. 
Published: April 2021

Abstract
Providing adequate ventilation in underground mines is a growing problem. The constantly increasing depth of exploitation is a challenge for ventilation services. However, not only the depth of exploitation, but also the increasing knowledge of the impact of noxious factors on the health of employees contributes to the constant changes in the values of permissible concentrations of gases to improve working conditions. One of the main hazards to which the restrictions are introduced is the gas hazard. Nitrogen oxides are one of the most important gas compounds that occur in underground mining plants. The article will present the beginnings of recognizing hazardous gases as harmful and the history of limiting the concentrations of these compounds in underground mines. The restrictions concern compounds from the NOx family, such as nitrogen oxide (NO) and nitrogen dioxide (NO2). The concentration limits in force in Poland refers to both European directives and regulation acts issued in our country. The subject of nitrogen oxides in the world has recently been very important, and in Poland, it mainly concerns copper and salt mines. Although research has not yet been officially carried out to identify the sources of nitrogen oxide emissions in mines, it is recognized that most of these compounds come from exhaust gases produced by self-propelled mining machinery with diesel engines. It is presumed that nitrogen oxides enter the mine atmosphere also through a blasting and from the natural outflow of these gases from the rock mass. The presence of nitrogen oxides in the mine atmosphere in Polish copper ore mines is related, among others, to the mineral o the mineral mining cycle.
New methodology of simplified rock tests to determine bearing capacity in embankments and excavation bottoms
Authors: Garrido C. L. , Morilla I. , Galindo R. A. 
Published: April 2021

Abstract
Engineering works and projects placed in rock terrains require conventional rock testing for its geological and geotechnical characterization. These tests are well-known and used in practice, but they have notable drawbacks such as high execution costs and large amounts of time required. In this research, a new methodology of simplified rock tests is presented to solve the main disadvantages of conventional rock testing and to provide useful outcomes in practical applications. The simplified rock tests proposed were developed by Professor Morilla, being a set of simple, quick, and cheap tests whose results are obtained with relative scoring systems. Furthermore, correlations with the bearing capacity in embankments and excavation bottoms have also been developed, based on the simplified rock test scores exclusively. These correlations do not include units about their magnitude, but they represent quantitative approximations about their field of application. Therefore, this new methodology is not considered as a self-sufficient design procedure for embankments and excavation bottoms. This paper covers the description of each simplified test required to obtain the bearing capacity in embankments and excavation bottoms, including the tools, steps to follow, scoring system, and the parameters and hypothesis established in the proposed correlations.
Review of the state of the art: empirical formulations for the estimation of rock mass deformability by means of dynamic testing
Authors: Esteban N. , Galindo R. A. 
Published: April 2021

Abstract
This paper is focused on the empirical formulations for the estimation of rock mass deformability dependent on data obtained from dynamic methods. The fundaments of dynamic testing, as well as their advantages and limitations, are reviewed. Based on the results of recent studies, a discussion is made on the relationship between dynamic and static deformation moduli, and their dependency on factors such as lithology, weathering, or presence of discontinuity surfaces. The most significant empirical formulations published to this day are summarized, alongside a critical exposition of their characteristics, and a statistical analysis of their results is undertaken. As a result, the influence of the lithology as a crucial factor in the determination of the deformation modulus is highlighted. Thus, it must be properly considered when adopting a formulation for the estimation of the deformability behaviour of a rock mass.
Development of a Building Topological Model for Indoor Navigation
Authors: Trybała P. , Gattner A. 
Published: April 2021

Abstract
Human high mobility is essential to the proper functioning of a modern world. For a fast and effcient ground transportation, a suitable and accessible positioning, route finding and navigation solutions are crucial. For outdoor traveling, mobile applications utilizing GNSS systems and navigation services based on road and pavement networks already provide a satisfying solutions. On contrary, an indoor environment is much more intricate. Localization with GNSS is impossible and there is no explicit traversable network inside the building as in outdoor routes. Multi-storey buildings, often with complicated room layouts and floor transitions, confined spaces and numerous areas restricted for visitors or impassable pathways for disabled people add another layers of complexity to this problem. This study covers the issue of creating a topological building model for indoor navigation. Necessities of such a model are discussed and the fitting i mplementation, developed by ESRI, is detailed. The entire process, from data pre-processing to the model creation and visualization in ArcGIS Pro software, is delineated. A case study of development of such a model for a Geo-3EM building of Wrocaw University of Science and Technology (WUST) is conducted and the sample visualizations of a model and route finding are shown. Finally, the results are discussed and the future directions of research are presented.
Development of low-cost Unmanned Surface Vehicle system for bathymetric measurements
Authors: Wajs J. , Kasza D. 
Published: April 2021

Abstract
Bathymetric measurements are a significant branch of geodesy. They provide information required for the modeling of terrain topography below the water level for both running (lotic) and standing (lentic) waters. The existing technology allows the development of autonomous bathymetric systems which integrate Global Navigation Satellite Systems (GNSS) sensors, an echosounder/sonar and a floating platform. Such a solution has been designed at Wroclaw University of Science and Technology. BATDRON – an integrated bathymetric system – is a low-cost solution. The hull is in the form of a catamaran, which ensures high stability during measurements. The navigation module was based on the Ardupilot APM platform and was integrated with a propulsion system consisting of two T200 thrusters manufactured by Bluerobotics. The main sensor set uses a Satlab SLD-200 singe beam echosounder synchronized with a Trimble R6 GNSS antenna for both navigation and recording the position of the echosounder pole.