bluuebunny/crossref_metadata_2025_split huggingface dataset:
Determination of soil scores for the purpose of further calculating the cadastral value of agricultural land
Authors: Zaitseva Ya , Radchevsky N 
Published: December 2021

Abstract
The paper discusses the most important property of the land – soil fertility, which characterizes it as a productive force and the main means of production, as well as a price-forming factor. This ability is the main specific feature of agricultural land. Fertility is understood as the ability of the soil to provide a crop, the level of which depends on the objective properties of the soil itself, climatic conditions and farming culture. This property is the result of soil-forming natural processes, and when used in agriculture, it is also the result of cultivation. It has a huge impact on the value of an agricultural land plot as an object of valuation.
Influence of culture medium composition on the micropropagation of Thymus tauricus Klokov et Des.-Shost.
Authors: Tevfik A , Yegorova N 
Published: December 2021

Abstract
Thymus tauricus Klokov et Des.-Shost. is a perennial dwarf shrub of the Lamiaceae family. This plant has anti-inflammatory, antispasmodic, analgesic and antiseptic properties. The use of biotechnological methods makes it possible to increase the efficiency of traditional methods of breeding and seed production. Our investigation aimed to study the influence of the culture medium composition on the explants morphogenesis at 1-2th stages of Thymus tauricus clonal micropropagation. When comparing three cytokinins, the best explants development was revealed on culture media containing kinetin. Both high vitrification rate of microshoots (31.2-90.2%) and formation of small shoots were observed on media supplemented with BAP or TDZ. The most effective culture medium at the introduction stage is MS with 1.0 mg/l kinetin and 1.0 mg/l GA3 or 1.0 mg/l kinetin. On this medium, on average, 8.4-10.1 microshoots per explant and shoots length of 1.9 cm were obtained. It was found that the optimal culture medium at the actually propagation stage is MS with 1.0 mg/l Kin or 1.0 mg/l kinetin and 0.5 mg/l IAA, on which the multiplication index 26.9-28.5 were obtained. Induction of rhizogenesis with a frequency of 30.2-94.4% and a root length of 1.6-3.0 cm was noted on culture media for the second stage of clonal micropropagation. The results of the studies are the basis for development T. tauricus clonal micropropagation method.
Analysis of X-ray luminescent separation of diamond ores as an automation object
Authors: Podkamenniy Y A , Bebikhov Y V , Semenov A S 
Published: December 2021

Abstract
The paper discusses the basic principles of X-ray luminescent separation of diamond ores as an automation object and analyzes modern technical solutions and basic organizational and technical issues, the solution to which will contribute to the effective implementation of automated control systems in separation. The complex automation systems of processing plants (ore mills) are described. The process and principle of operation of the X-ray luminescent separator of diamond ores are described. It is expedient to automate the X-ray luminescent separation using an automated control system. The issues of designing an automated control system with a human-machine interface are considered. An APCS system and an interface of the automated operator-technologist workstation, upgraded through implementing RSLogix 5000 and FactoryTalk View production management software are described.
Optimization of in vitro rooting and ex vitro adaptation conditions of Melissa officinalis L. microshoots during clonal micropropagation
Authors: Yakimova O V , Yegorova N A 
Published: December 2021

Abstract

Melissa officinalis L. is a perennial herbaceous essential and medicinal plant widely used in pharmacology, perfumery and cosmetics, as well as in alcoholic beverage and food industries. The low content of essential oil in lemon balm raw material determines the selection work aimed at creating high-oil cultivars. The use of clonal micropropagation method in vitro will increase the efficiency of this process and accelerate promising breeding samples multiplication. The aim of our research was to study the influence of cultivation conditions and cultivar on the M. officinalis in vitro rhizogenesis and ex vitro adaptation. It was found that the maximum frequency of shoot rooting (up to 93.3%) in cultivars ‘Citronella’ and ‘Sobornaya’ was on MS culture medium supplemented with 0.5 mg/l NAA. The number of roots was 10.1 and 13.6 pcs. per shoot, respectively. The highest rates of root formation for the cv. ‘Crimchanka’ was found on a culture medium supplemented with 1.0 mg/l IAA (8.7 roots per shoot). The mixture of peat, sand and perlite (2:1:2) as a substrate provided up to 93% of adapted ex vitro lemon balm microplants. The presented studies were used to develop a technique for clonal micropropagation of M. officinalis.
Calculation of northern hemisphere sea ice area using recurrent neural networks
Authors: Viatkin D , Zhuro D , Zakharov M , Malysheva S 
Published: December 2021

Abstract
Ice covering water surfaces causes difficulties for ship traffic in the northern regions. Developing a sustainable logistics system that describes and manages ship traffic requires consideration of many factors, one of which is the area of sea ice covering the waterways. Most of the volume of sea ice in the northern hemisphere is concentrated in the Arctic zone. The paper describes the process and results of data preparation and development of a recurrent neural network to determine the value of ice area change in the next 50 days relative to the last day of sea ice area measurement. The prediction is made based on the previous 30 measured values of sea ice area and a user-specified value of the day for which the prediction will be made. The work uses NSIDC open dataset on sea ice area for the northern hemisphere. This model allows us to calculate the change of sea ice area for 1 day ahead with an accuracy of 0.581%. For the 50-day prediction of ice area, the accuracy is 4.017%.
Modern sedimentation processes in glacial lakes on the Spitsbergen archipelago (on the example of Lake Bretjørna)
Authors: Meshcheriakov N I , Ilyin G V , Zhuvikina E G , Tarasov G V 
Published: December 2021

Abstract
The paper reviews the study results of sedimentation and formation of geochemical characteristics of glacial Lake Bretjørna sediment – as the example of postglacial process in inner areas of Arctic archipelagos. Field research and sampling were carried out in the winter of 2018. The properties of sediments along the profile of the lake were analyzed. The income and accumulation of heavy metals in sediment were assessed. The lithofacies characteristics of the sediments and their spatial distribution were determined. In the paper the main geochemical characteristics of the lake bottom sediments (granulometric composition, organic matter content, as well as the accumulation of Pb, Zn, Cu, Ni, Fe, Mn, Hg) are considered. The correlation between the lithological composition of sediments and their micro-component content are shown. Correlation between elements and terrigenous sediments income from Northern Scandinavia and the Kola Peninsula accumulated by the glacier and snow cover of the catchment is obtained. Three associations of trace elements in the group of studied elements are distinguished.
Optimization Study of Adsorption Parameter for Removal of Dye Pollutant Using Candle Soot Coated Egg Carton
Authors: Tai Yong Kee , Sim Lan Ching , Leong Kah Hon , Saravanan Pichiah 
Published: December 2021

Abstract
In this study, several parameters that affect the adsorption capacity of Rhodamine B (RhB) dyes were reviewed which include initial pH, temperature, contact time and initial dye concentration. Experimental data was extracted from other literatures as input for subsequent optimization study. Design Expert version 11.1.2.0 software was used to find the optimal condition for adsorption of RhB dyes from wastewater by using candle soot coated on egg carton (CS-Egg) as absorbent. The Central Composite Design (CCD) in response surface methodology (RSM) was employed to perform the optimization and analysis process as it was effective in determining the optimal condition for the adsorption process. CCD evaluated many parameters at the same time and thus reducing the number of experiments required. The optimum condition to maximize the adsorption efficiency was obtained at pH 7, 262.5 mg/L, 60 min of contact time and 55 °C. The highest predicted adsorption efficiency of RhB dye was 90 % at optimum condition. The optimization of parameter provides a better understanding on the adsorption efficiency before conducting the actual experimental work.
Numerical Modelling of a Photovoltaic Thermal (PV/T) System Using Nanofluid With Parallel Flow Thermal Absorber
Authors: Kubenthiran J. , Baljit S. , Tijani A. S. , Baharin Z. A. K. , Remeli M.F. , Ong K. S. 
Published: December 2021

Abstract
In the present study, a numerical model of photovoltaic thermal (PV/T) system using alumina (Al2O3) nanofluid, and pure water are used as working fluid. The proposed PV/T model consists of parallel riser tubes that are connected to two header tubes and it is attached to an absorber plate to simulate the conduction and convection heat transfer mechanism of a conventional PV/T system. The energy efficiency of the PV/T model is analyzed by varying the solar radiation (Heat Flux), inlet fluid velocity, and the volume percentage of the nanofluids. The numerical simulation is performed by using a conjugate heat transfer method with a computational fluid dynamics (CFD) software. According to the simulation data, the energy efficiency and the heat transfer coefficient of the PV/T system increased by increasing the inlet fluid velocity. In comparison with water, alumina nanofluid showed better thermal and electrical efficiency due to its high thermal conductivity. The thermal efficiency increased by 5.55% for alumina, compared to pure water and the electrical efficiency increased by 0.15% for alumina. Moreover, the effect of inlet fluid velocity ranging from 0.04m/s to 0.2m/s was also evaluated, and the results showed that the increase in thermal efficiency for pure water and alumina are 18.15% and 25.77%, respectively. Subsequently, the electrical efficiency increased by 0.52% and 0.56% for pure water and alumina using the new parallel flow thermal absorber, respectively.
Design and development of an automated robot for collecting latex cups in rubber plantation
Authors: Kang S. J. , Wong C.S. , Lim C.H. , Tan Y. C. 
Published: December 2021

Abstract
The main reason for robots in agriculture are saving the time and energy required for performing repetitive tasks and increasing the productivity. The turnover rate in rubber plantation is high and youngster nowadays refuse to work in this industrial. This project aims to build a small-scaled automated robot prototype for collecting latex cups in hopes to reduce the dependency of labor in collecting latex. It was fabricated by using 3D printer and consists of transmission system, linear actuator robotic arm and a storage tank. It was analyzed through static test and balance test for mechanical stability. The robot developed can perform auto-navigation with proper calibration on the transmission at flat terrain, and able to control the 3 Degree of Freedom (DoF) robotic arm on the prototype to grab the latex cup smoothly. Ultrasonic sensors are used to locate the rubber trees and movements of the prototype. The robotic arm and the base are controlled by an Arduino Uno and motor driver circuit respectively. A magnetometer was implemented to ensure the prototype could move straight throughout the process. During test, the prototype was placed in front of two “rubber trees” (imitated by water bottle) to let it retrieves the model latex cups and extract the liquid inside. The results showed that implementation of magnetometer enabled the robot much more consistent in the moving direction and proper delay time used for the navigation of the robot. The prototype is able to automate basic tasks and act as fundamental design for future development.
Total Phosphorus and Reactive Phosphate Removal from Aquaculture Wastewater using Calcined Eggshell
Authors: Tan Sin-Ying , Sethupathi Sumathi a/p , Leong Kah-Hon , Ahmad Tanveer 
Published: December 2021

Abstract
Phosphorus is the key nutrient in fish feed, and it has been one of the major soluble nutrients found in aquaculture wastewater (AW). This work aims to evaluate the removal of Total Phosphorus (TP) and Reactive Phosphate (PO4
3-) via adsorption in batch studies using thermally calcined eggshell as adsorbent. The effect of calcination temperature (700 – 1000°C), particle size and holding time were investigated. The screening phase showed that calcined eggshell at 800 °C for 30 minutes was the most suitable condition. Characterization of adsorbents revealed that crystalline structure and functional groups were responsible for the TP and PO4
3- removal using calcined eggshell from AW. Adsorption equilibrium was attained after 15 min with the dosage of 0.2 g of the optimized adsorbent, capable of removing more than 97 % of TP and PO4
3- from AW. This finding has proven the ability of calcined eggshell waste as a potential phosphorus adsorbent from liquid effluents.
Generation Mechanism of Tidally-driven Whirlpools at A Narrow Strait in An Estuary
Authors: Uchiyama Yusuke , Zhang Xu , Yanase Shota 
Published: December 2021

Abstract
This study investigates the generation mechanism and influence of the whirlpools in the Naruto Strait on the surrounding marine environment using state-of-the-art high-resolution numerical ocean circulation modeling in a quadruple nested configuration. The Naruto whirlpools is recognized as an extraordinary seascape that the local governments and the citizens seek to register as a world natural heritage site. We found that the pronounced pressure gradient force associated with the meridional surface elevation difference was induced by a phase difference of two bifurcating major tidal waves. These waves originate from the Kitan Strait, and ultimately produce intense tidal currents at the Naruto Strait. One branch of the tidal waves propagates counter-clockwise along Awaji Island through the Akashi Strait, while the other occurs directly from the Kii Channel. As such, the whirlpool emerges as a large number of sub-mesoscale eddies, primarily due to the horizontal shear instability of tidal currents energized at the narrow topography between two headlands that extend into the strait. A dipole of overturning vertical circulations appears underneath the whirlpools with convergent downward transport at the strongest tidal current near the center of the strait; this causes efficient vertical mixing. This three-dimensional non-linear mixing promotes a time-averaged southeastward mass transport that extracts water and materials from the Harima-nada Sea into the Kii Channel.
Integrated Engineering, Environmental, and Economical Modelling of Micro Hydro Plant (MHP) Production
Authors: Al Dianty Marelianda , Fathurahman Reza , Putuhena Frederik Joseph , Arbaningrum Rizka , Helwani Zuchra 
Published: December 2021

Abstract
The use of renewable energy has commonly concentrated on energy production through wind engines and solar panels. Nowadays, the micro-hydropower (MHP) plant has a great challenge as an important contributor to energy systems. Indonesia has the potential natural resources to develop that power plant, in the form of the river where is abundant throughout all provinces. The research aims to address solving issues regarding deficit energy by renewable energy production. The environmental and hydrological approaches were used to determine the location to obtain the optimal and proper utilization of MHP. The analysing from all modelling creates an economical assessment of MHP energy production. The result recommends MHP with the capacity of 2 x 4.0 MW and a total discharge of 14.30 m3/second whereas design flood discharge is 813.47 m3/second (Q100 year). The implementation of MHP is an effort to achieve independent energy in the region.
Application of an Entropic Method Coupled with STIV for Discharge Measurement in Actual Rivers
Authors: Omori Yoshiro , Fujita Ichiro , Watanabe Ken 
Published: December 2021

Abstract
In recent years, due to the frequent occurrence of floods that exceed the facility maintenance level due to climate change, non-contact flood flow measurement techniques have been paid attention and actually some measurements have been conducted by applying them instead of the conventional float method. The space-time image velocimetry (STIV) which can measure the surface flow velocity distribution from video images is one of such techniques. In order to calculate the river flow from the surface velocity distribution, it is necessary to determine an appropriate surface velocity coefficient, which is the ratio of the average depth velocity to the surface velocity. However, at present, empirical default value has been still used in practice. In this study, the cross-sectional velocity distribution was calculated using an entropic method by utilizing the surface velocity distribution measured by STIV and compared with Acoustic Doppler Current Profiler (ADCP) observation. It was confirmed that the introduction of the velocity dip system express the flow velocity distribution in the vertical direction, where the velocity dip occurs due to the influence of vegetation.
Investigation of the Configuration of Small Hydropower using a Novel Smoothed Particle Hydrodynamics Method
Authors: Ng Shu Kai , Nakayama Akihiko 
Published: December 2021

Abstract
A novel Computational Fluid Dynamics (CFD) method utilizing Smoothed Particle Hydrodynamics (SPH) has been developed and applied to a simulation of flows in small hydropower systems. The simulation of the flow through a gravitational vortex turbine (GVT) small hydropower system where the flow is directed to a circular basin with a vertical-axis turbine, harnessing the rotational energy of the vortex formed to drive the turbine. Two modes of Fluid-Structure Interactions (FSI) were tested with identical flow conditions to evaluate the potential of this method to simulate complex FSI scenarios. It was found that simulation results for both one-way and two-way interactions produced reasonable results. The two-way interaction result proved to reflect more accurate FSI scenarios, but more studies are needed to provide validation.
Building-Information-Modelling-Based Thermal-Energy Performance Evaluation of Silica-Aerogel-Incorporated Rigid Board Roof Insulation Material for Residential Buildings in the Tropical Climate of Malaysia
Authors: Husna Nadzhratul , Farhan Syed Ahmad , Wahab Mohamed Mubarak Abdul , Shafiq Nasir , Sharif Muhammad Taufiq , Razak Siti Nooriza Abd , Ismail Fouad Ismail 
Published: December 2021

Abstract
Malaysia is located in the equator, with a hot and humid climate. The highest temperature recorded during the day was 39 °C, which leads to discomfort among building occupants, in particular, residential buildings, where indoor thermal comfort is of a higher priority compared to other types of buildings. Hence, the thermal performance of the residential roof assembly needs to be improved to lower the indoor temperature and, accordingly, maintain the level of indoor thermal comfort. In view of the need to improve the thermal performance, a silica-aerogel-incorporated rigid board roof insulation material for residential buildings was developed using kapok fibre, high density polyethylene (HDPE) and silica aerogel. The thermal conductivity of the material was measured. The sample with 4 wt. % and 5 wt. % of silica aerogel content obtained the lowest thermal conductivity of 0.04 W/mK. Silica aerogel content of above 4 wt. % did not result in further reduction of the thermal conductivity. Therefore, it can be concluded that the optimum silica aerogel content for the sample was 4 wt. %. Building-Information-Modelling (BIM)based thermal-energy performance evaluation of the material was performed by generating temperature and cooling load data using Integrated Environmental Solution-Virtual Environment to validate the thermal-energy performance of the material, by installing the material within the roof assembly of a residential BIM. Findings indicate that the material can potentially be employed in the future as a roof insulation material to maintain the level of indoor thermal comfort among residential building occupants.
Thermal-Energy Performance of High-Albedo Roof Tiles and Bulk Rafter Insulation in Residential Roof in the Tropical Climate
Authors: Farhan Syed Ahmad , Shafiq Nasir , Husna Nadzhratul , Zain-Ahmed Azni , Wahab Mohamed Mubarak Abdul , Razak Siti Nooriza Abd , Ismail Fouad Ismail 
Published: December 2021

Abstract
Residential roof assemblies in tropical countries, such as Malaysia, are exposed to intense solar radiation throughout the day all-year round due to the high altitude of the sun path as well as the horizontal orientation and high position of the roof in relation to other components of the building envelope. Residential buildings typically employ a lightweight pitched roof with roof tiles and an attic space above a ceiling board. Diurnal heat transfer into the building through the roof assembly can be minimized by reflecting heat at the roof surface via the application of white paint on high-albedo roof tiles as well as resisting heat via installation of bulk rafter insulation within the roof assembly. However, their adoption will have an influence on the nocturnal heat transfer and, accordingly, the resultant thermal-energy performance. Hence, thermal-energy performances of high-albedo roof tiles and bulk rafter insulation were compared to develop an energy-efficient pitched residential roof assembly that is capable of minimizing diurnal heat transfer into the building with less obstruction of the nocturnal heat transfer in the opposite direction. Evaluation of thermal-energy performance was performed on a Building Information Model, which either adopts, solely, the application of white paint on high-albedo roof tiles, or, in amalgamation with, the installation of bulk rafter insulation within the roof assembly. The simulation projected that the application of white paint on high-albedo roof tiles can generate annual energy savings of 13.14 % and, when adopted in amalgamation with the installation of bulk rafter insulation within the roof assembly, 13.91 %.