bluuebunny/crossref_metadata_2025 huggingface dataset:
Assessment of ceramic based photocatalytic as indoor air purifier during covid-19 pandemic
Authors: Prasetya H , Agustina L , Rinovian A , Muttaqin F D
Published: February 2022

In reducing number people who exposed covid-19, Government of Indonesia (GOI) have been issued micro-scale people activities limitation policy. Based on the policy, most people activities should be carried out in indoor area, called Work from Home (WFH). Indoor activities are at risk of expose to air pollution if there is a pollution source and unhealthy air circulation. Air purifier need develop to degrade pollution and inhibit microorganism. One of the promising technologies in air purification is Photocatalytic. Photocatalytic is an eco-friendly technique that emerged as a promising alternative for the degradation both organic and non-organic pollutants. Ceramic material (compared to aluminum and stainless steel) composited with Titanium dioxide (TiO2) has been investigated to have potential as an optimal photocatalytic medium. Aim of this study was to explore ability of ceramic based photocatalytic in degrade non-organic air pollutant. Earthenware ceramic was coated with photocatalyst material and examined their photocatalytic activation. A simple photo-reactor was established, to investigated performance of ceramic based photocatalyst air quality improvement which was contaminated with cigarette smoke. Result of the study was earthenware ceramic based photocatalyst able to improve air quality by reducing concentration of pollutants both physical and chemical parameters significantly.
A systematic review of the shape of disaster education
Authors: Subarno A , Dewi A S
Published: February 2022

Researchers conducted this disaster education research to convey the importance of disaster knowledge and awareness in disaster-prone areas. The purpose of this study was to analyze the forms of disaster education in the last decade. Several previous studies on disaster education were analyzed and reviewed. This systematic review used an article selection process. It defined the purpose, conducting a literature search, pulling articles by reading abstracts, reading the full papers, abstracting data, and conducting an analysis. The disaster education system was classified into formal and non-formal education, consisting of pre-disaster, emergency responses, and post-disaster learning materials. Lastly, 95 articles have been reviewed involving a total number of participants from 29 to 430 people. The majority of research methods in this article were lectured through experimentation and integrated learning. While the research instruments used were questionnaires, documentation, observations, and interviews. In various fields of research, game-based learning enhances the understanding of disaster prevention.
The Effectiveness Of Socialization Toward Students Understanding Of Tectonic Activities Disaster
Authors: Supriyadi S , Saputro NV , Aji M P , Linuwih S
Published: February 2022

The purpose of this research is to determine how much effectiveness rather than socialization, especially in terms of disaster which occurs because of tectonic activities. This relates to the location of Indonesia at the triple junction so it is prone to experiencing disasters due to tectonic activity. The alternative hypothesis (ha) states that there is a difference in understanding of tectonic disaster through socialization treatment. Research subjects were Indonesian students in Kuala Lumpur Malaysia. The method used is an experimental research method with a one group pretest and posttest strategy. The data obtained was analyzed in three ways which are normality test, product moment correlation test, and two party test. The normality test found that the distribution of data is normal with scale 0.007 for pretest and 0.353 for posttest based on Saphiro-Wilk test. The effectiveness is measured by t-test from SPSS. The result shows that the syg 2-tail is 0.000 which means that there is a significance in the research result. This makes the hypothesis can be accepted. The accepted hypothesis means that socialization is still a good way to make people understand about the disaster and make the chance of survival is getting higher.
Implementation of comprehensive school safety: the risk reduction and resilience education pillar in State Senior High School 1 of Pacitan and Islamic State Senior High School 1 of Pacitan, Indonesia
Authors: Syahputri Deasyka Milna , Aris Yunus , Hafida Siti Hadiyati Nur , Widiyatmoko Wahyu , Anwar Yaskinul , Dewi Ratih Puspita
Published: February 2022

Pacitan is vulnerable to earthquakes and tsunamis because it is located near the subduction zone between the Indo-Australian and Eurasian plates. So that it needs Disaster Risk Reduction efforts, one of the best measures is to implement the three pillars of Comprehensive School Safety. This study aims to analyze the implementation of the third pillar of Comprehensive School Safety, namely the Pillar of Risk Reduction and Resilience Education. The study was conducted at State Senior High School 1 of Pacitan and Islamic State Senior High School 1 of Pacitan because they directly face the Indian Ocean. This study used a quantitative approach with primary data obtained from filling out questionnaires by respondents. Respondents in this study were principals, teachers, and students involved in Scouting and Junior Red Cross in these two schools. The instrument was a questionnaire including teacher and education staff training, integration of disaster education into the curriculum, and extracurricular activities indicators. The results indicated that teacher and education staff and curriculum integration were not optimally carried out in these two schools. Furthermore, they have not yet established disaster mitigation extracurricular, but implementing disaster mitigation education was carried out through Scouts and Junior Red Cross.
Disaster literacy level of teachers and students in secondary school case study in Surakarta City, Indonesia
Authors: Ajar Seno Budhi , Ronggowulan Lintang
Published: February 2022

This article contains the level of information literacy and disaster literacy skills for teachers and secondary students in Surakarta in reviewing and responding to disaster information and symptoms of disasters. This article is based on Doyle’s theory that the most basic ability in information literacy is the ability to know the accuracy and completeness of information which is the basis for making sound decisions. Quantitative methods were used to test the ability of 20 teachers and 82 secondary students to examine the accuracy and completeness of disaster information and symptoms of disasters and the ability of teachers and secondary students to respond to disaster information and symptoms of disasters. the results presented in this article. First, the ability of information literacy in knowing the accuracy and completeness of information on teachers and secondary students is low because only 5.5% of teachers and 7.8% of students confirm the accuracy of disaster information, and only 5.2% of students who want to find the completeness of the information. Second, most teachers and secondary students generalize their responses to both disaster symptoms and disaster information, they will immediately evacuate if they receive disaster symptoms or information.
Ecosystem conservation of Mangrove Education Center (MEC) in handling abration disaster at Pangkalan Jambi village based on stakeholder engagement perspective
Authors: Seva T A , Purwanto W , Latuconsina A R
Published: February 2022

The coastal communities of Pangkalan Jambi Village lives in an abrasion-prone situation. This vulnerability can’t be separated from natural factor namely hydrodynamic phenomena worsened by lack of mangrove plants, which also caused by some destructive human activities that ruined the ecosystem. This phenomena, simultaneously creates an abrasion-prone situation on the Pangkalan Jambi Village’s coastal area, which is marked by the coastline decline on the village coast up to 115 meters. Hence, this study aims to examine an innovative idea to restore and conserve the mangrove ecosystem of village coastal area. Using descriptive qualitative approach with conceptual framework of stakeholder engagement, it focused on analyzing the idea of conservation of mangrove areas initiated by CSR PT Kilang Pertamina Internasional RU II Production Sungai Pakning in partnership with various stakeholders such as local government and also civil society organization as well. Activities that performed to conserve coastal mangrove areas in Pangkalan Jambi Village started from mangrove planting practice using Hybrid Engineering and Triangle Mangrove Barriers (Trimba), and developing Mangrove Education Center (MEC) area as a tourism spot as well as a learning laboratory for mangrove ecosystems.
Disaster mitigation-based environmental management model: a study on ten thousand hills, Tasikmalaya City, West Java
Authors: Fadjarajani S , As’ari R
Published: February 2022

Tasikmalaya seen from the physiographical aspect has its own uniqueness because it has many hills known as the ten thousand hills. The Ten thousand has functions, namely: geological, ecological, hydrological, aesthetic, economic, micro-climatological, natural defense/fortress (buffer zone), as well as education and tourism functions. The method used in this research is descriptive with field observation data collection techniques based on Satellite Imagery analysis.. The method used in this research is descriptive with field observation data collection techniques based on Satellite Imagery analysis. Data analysis is based on satellite imagery data processing with ArcGIS which was developed. The facts on the ground show that the extinction rate of the hill reaches 70%. One of the driving factors for the extinction of the hill was the mining of mineral. The distribution pattern and factual conditions in the field showed that 41.67% of the hills experienced extinction and 58.33% of the hills were heavily damaged by sand mining. This disaster mitigation-based environmental management model includes: 1) Zoning of hill areas based on conservation functions, 2) community participation based on economic improvement. Ten thousand hill zoning and community participation based on economic improvement can be used as role models for environmental management based on disaster mitigation in Tasikmalaya which is located in the ten thousand hill area.
Land surface temperature (LST) and soil moisture index (SMI) to identify slope stability
Authors: Putro S T J , Arif N , Sarastika T
Published: February 2022

Scientists widely use satellite images for scientific purposes, including investigation on earth science and environmental issues. Developing of many environmental models is due to replicating the natural process. Landslide is a known natural process controlled by slope stability which incorporates many parameters such as soil water content, morphology, and meteorological factor. Both LST and SMI were derived from satellite images, while SMI was the derivation of LST, meanwhile the use of both parameters in determining slope stability was rarely done. This research explores the use of LST and SMI in slope stability modeling. The LST analysis was calculated based on SEBAL (Surface Energy Balance Algorithms) using Landsat 8 imagery. The LST was then used to construct the SMI. Slope stability (FS) was calculated using the Selby model. All those variables were then cross-plotted in a regression to find the R2 value. The result shows a weak connection between FS-LST and FS-SMI with the R2 value of 9,09% and 8,16%. A stronger connection is only demonstrated in FS-Slope regression with a value of 70,98%. The weak R2 indicates that the model is not fit to calculate the FS of the Selby model. The LST and SMI were derived from satellite images and did not directly correspond to the soil characteristic as SMI was derived from LST and vegetation indices. Further empirical data collection needs to be used to build a better model on FS.
Analysis of landforms, early warning system, locations and evacuation paths for reducing flood disaster risk in Sragen, Central Java, Indonesia
Authors: Sutarno
Published: February 2022

One of the areas in Central Java Province that is prone to flooding is Sragen Regency. The distribution of flood disasters occurs in commensurate rivers and river confluences in lowlands which are dominated by settlements and agricultural land. The purpose of this study was to analyze the distribution of landforms along riverbanks in residential areas and rice fields, refugee shelter locations and evacuation routes for handling disaster risk reduction. The research method is grounded research by recording the population census and public facilities at the affected residential locations. Determination of evacuation locations and routes by using evacuation criteria parameters and safe distance parameters to determine the classification of refugee evacuation locations. The results of the study found that there was a lack of understanding of the landforms of river borders for agricultural and residential land, the utilization and loss of embankments on comparable rivers, especially in areas of interconnection between rivers in the lowlands. To minimize the risk of flooding, it is necessary to add EWS, river border land that is already owned by the community, the use of right of use must be gradually returned as a river border and the selection of the right location and route evacuation.
Identification of coastal typology: potential resources and hazards
Authors: Wibowo Y A , Ronggowulan L , Fatchurohman H , Nursaputra M , Arief D A , Permonojati L , Suriadi  , Kurniawan D , Afrizal R
Published: February 2022

Coastal areas are unique ecosystems because of the potential for abundant natural resources and hazards that can cause losses. Therefore, this study aims to identify the typology and coastal dynamics of Kukup, Ngrawe, Sepanjang, Drini, and Krakal, Indonesia, for analyzing the potential of natural resources and hazards. A rapid-integrated assessment was carried out to identify typology, genesis, and dynamics of coastal areas by conducting field surveys at locations that have been determined by purposive sampling. The results showed that wave erosion coast was formed in Ngrawe, Kukup, Drini, and Krakal. The marine deposition coast was formed in Ngrawe, Kukup, Sepanjang, Drini, and Krakal. Moreover, the coast built by organism can be found in Sepanjang, Drini, and Krakal. In contrast, the structurally shaped coast was formed in the western part of the Krakal. The coastal dynamics begin with geodynamic processes that form structurally shaped coast, hydrodynamics that form marine deposition coast, wave erosion coast, and ecodynamics that form coast built by organism typology. The potential of natural resources consists of fishery potential, agriculture, and natural beauty for tourism objects. In contrast, the potential hazards consist of earthquakes, tsunamis, tidal waves, rockfall, rip currents, topographic changes, and land-use changes. The coastal area management planning recommendations were Spatial Planning Regulation, Early Warning System, Evacuation Route and assembly point (shelter), Digital-based Information Dissemination, and building retrofitting.
Empirical study on energy consumption, carbon footprint, and economic growth in Indonesia
Authors: Sritrisniawati Shella Elly , Ayya Agmulia A.I , Gravitiani Evi
Published: February 2022

Energy is a basic material that can be used for economic development. Increasing growth requires continuous energy exploration, so it requires new energy sources and technological innovations in energy. Energy consumption makes a big contribution in influencing climate change in the presence of carbon. In Indonesia, with a fairly dense population, it certainly increases the most energy consumption. Based on this, the purpose of this study is to analyze the relationship between variables of energy consumption, carbon footprint as an indicator of climate change and economic growth. The energy consumption used in this study is the consumption of electrical energy, oil, gas and energy innovation as alternative energy that can be realized. The method used is VARX analysis. The use of this method is to analyze the relationship between variables and analyze the resulting impact on each variable. The results show that there is a correlation between energy consumption and economic growth. In addition, there is a significant impact of shocks on the energy consumption variable. The higher the level of energy consumption, the higher the carbon footprint. energy consumption cannot prevent climate change, while energy consumption provides benefits in minimizing carbon. so that energy consumption in Indonesia needs to be controlled.
Adaptation strategy community from exposure floods lake in the face of floods in Semayang Village, East Kalimantan, Indonesia
Authors: Anwar Yaskinul , Setyasih Iya , Oktoberdinata Dika
Published: February 2022

Semayang Village is one of the villages located on the lake of Semayang which is inundated every flood season. Semayang lake is a flood exposure lake, where the increase in standing water can reach >10 meters during a flood with a flood duration of >2 months. The purpose of this study was to determine the adaptation strategy of the semayang villagers in dealing with floods. Data collection techniques used the Rapid Rural Appraisal (RRA) method and interviews. Interviews were collected from 30 respondents in Semayang Village that were affected by the flood. The results showed that the overall adaptation carried out by the community in Semayang Village using houses on stilts with almost the same model, and some residents make terraced houses. In addition, each house has a backup board to raise the floor of the house when the flood crosses the floor of the house. there is also a floating house system attached to a tree or building around the floating house. In order to protect the house buildings from waves, a wave barrier was also built at the village entrance gate from the lake. This strategy makes the villagers of Semayang never evacuate and move from Lake Semayang even though they are always affected by flooding every year.
The impact of climate change to livelihood vulnerability for smallholders farmers in Wonogiri, Indonesia
Authors: Suryanto  , Rahayu E S , Astirin O P , Susilowati F
Published: February 2022

Climate change has affected human life, especially farmers in rural areas. Their livelihoods are very dependent on the climate so that their socio-economic life becomes vulnerable. If there is a risk of crop failure, the community becomes vulnerable to poverty and hunger. This study determines the livelihood vulnerability of smallholders in Wonogiri District, Indonesia. Purposive sampling was used to select respondents in the sub-districts of Girimarto, Eromoko, and Tirtomoyo. The number of respondents was 120 households which were selected for farmers who only own less than 2 hectares of land. Descriptive statistics and modified social vulnerability index (SoVI) were used in data analysis. We measured the level of vulnerability for economic and social. The results show that climate change to social vulnerability index with SoVI scores of 0.68 for Tirtomoyo, 0.61 for Girimarto, and 0.55 for Eromoko, respectively. The differences in components between the three sample areas include regional gross domestic product (GDRP), poverty rate, population density, population growth rate, sex ratio, children, and elderly. The results of the study conclude that climate change has the potential to cause poverty levels in the three sub-districts to increase. In terms of resilience, they are quite resilient because they do not depend on government assistance. However, when climate change causes continuous crop failure, the level of resilience of farmers will also decline.
Dynamics types of land use and land cover to determine time of the value erosion coefficient criticism in Keduang Watershed
Authors: Ahmad  , Utomowati R
Published: February 2022

This research aims to: (1) Determine the trends in change of the type of plants planted by the community within a year for each type of land use in Keduang Watershed; (2) Understand the dynamics of land cover in each land-use unit in Keduang Watershed; (3) Determine the influential factors of the dynamics land use and land cover in Keduang Watershed; (4) Understand in what circumstances the criticality of erosion coefficient (C value) occurs in Keduang Watershed. The methods used are: (1) analysis of trends in changes of crop types are determined based on the rotation of the plant species planted by farmers in each land use unit; (2) The dynamics of land cover determined by the percentage (%) of the plant canopy area that covers each land use unit; (3) The affecting factor of the dynamics of land use and land cover are determined based on the causative factor of land-use change and land cover dynamics; (4) the time of occurrence of the critical value of the erosion coefficient is determined based on comparing the time of high rainfall and the lowest decrease of land cover. The result shows that: (1) In Keduang Watershed, crop rotation occurs in rainfed-rice fields and moorland; (2) Seasonal change is the main factor for change of land use and land cover; (3) The critical period of the erosion coefficient value in Keduang Watershed occurred in November.
The effect of rainwater injection into dug wells on the changing of ground water level in Kusumanegara Region of Yogyakarta City
Authors: Maryono A , Prasetya A , Sembada P T S , Basyarudin A S
Published: February 2022

The rapid growth of the Special Region of Yogyakarta makes the water shortage one of the problems that must be solved immediately. The study area is located between Semaki Gede and Muja Muju Village in the Umbulharjo district of Yogyakarta. Declining groundwater levels and droughts has caused an abnormal environmental behavior, as there are still many flood points when the rainy season arrives. Precipitation (mm) between 1976 and 2018 shows that the potential rainfall intensity of the Yogyakarta has not changed significantly. Therefore, it is possible to take advantage of the rainwater potential of an average of 7.23 mm per month, a maximum precipitation of 210.281 mm in November 2017 and a minimum precipitation of level 0 from May to October 2018. The method used is to load or recharge rainwater in the dug well to keep the groundwater level stable. In this study, GAMA Rainfilter rainwater injection technology was used and 10 excavated wells were used, of which 5 uninjected observation and research wells were excavated and 5 excavated injected observation and research wells. Observation of the groundwater level of 10 wells from 2018 to 2019 resulted in an additional production of 0.095 m or 9.5 cm. Changes in groundwater quality were successful and there are several indicators that need to be considered again in the testing methods process.
Attitude and behavior of farmers on the slopes of mount lawu in adapting to climate change (a case study in the Jenawi District of Karanganyar Regency)
Authors: Lestari E , Rahayu P , Wibowo A
Published: February 2022

This paper describes the adaptation strategies of farmers on the slopes of Mount Lawu in the face of weather changes, their ways of dealing with the impact of weather changes on the farming sector, and the strategic efforts of farmers in handling the impact of weather changes to overcome the effects of unpredictable climate change on crop production. The research method is qualitative, with an explorative approach, to investigate the local knowledge that plays an important role in shaping the attitude and behavior of farmers in the face of unpredictable climate change. The research location is the district of Jenawi in Karanganyar Regency. The method of data analysis used for the research is a descriptive analysis. The results of the research show that the community living on the slopes of Mount Lawu have local knowledge that serves as a guideline for farmers in this area, and can be seen in their attitude and behavior in dealing with climate change, such as: (1) plant diversification; (2) organic farming; (3) water-saving irrigation; (4) healthy plant cultivation; (5) environmentally friendly pest and disease control; and (6) crop protection and improvement of crops yield.
The determinant factors of landslides in Lima puluh kota regency using bivariate statistical analysis 2015-2020
Authors: Ahyuni  , Susetyo B B , Oktari F , Karim A , Putriana A M , Nur H
Published: February 2022

Regarding disasters, West Sumatra Province have multi-hazard risks. Lima Puluh Kota Regency as a part of the region was frequently hit by floods, landslides, and tornadoes. Especially, almost all of its districts are prone to landslides. The purpose of this study is to analyse the significant factors influencing or controlling landslides in susceptible areas. Eleven natural and human-related factors were supposed to influence were analyzed. This study used bivariate statistical analysis with weight of evidence (WOE) method. The 142 land slides points occurrence from 2015 to 2020 had collected from historical records and field survey. Data divided into 83 train and 59 test data set. The results show there are eight factors that influences landslide occurrence: geology condition, landform, land cover, elevation, density of vegetation greenness, slope, rainfall intensity, and proximity to stream. The other three factors such as soil type, curvature of the slope, and aspect of slope were not taken into account because they are not considered to have a significant influence on landslides.
Spatial analysis of the urban physical vulnerability using remote sensing and geographic information systems (case study: Yogyakarta City)
Authors: Arif N , Wardhana A , Martiana A
Published: February 2022

Vulnerability mapping in urban planning is very important to reduce damage caused and loss of life due to disasters. This paper discussed the mapping of urban physical vulnerability using remote sensing, and geographic information systems (GIS) approaches. Physical vulnerability parameters used were building density, distribution of public facilities, slope, and land use. Landsat 8 OLI satellite imagery used remote sensing data to obtain building density information using the Normalised Difference Built Index (NDBI) and land use interpretation approaches. With the use of GIS, the spatial distribution of urban vulnerabilities could be known through the overlay of each indicator. The results of the analysis obtained that the physical vulnerability classes of Yogyakarta City were very high (26%), high (29%), moderate (29%), low (16%), and very low (0%). Some areas categorized as vulnerable to very vulnerable are areas with high building density, namely the Sub-districts of Danurejan, Kraton, Gedongtengen, Jetis, Ngampilan, Pakualaman, Mantrijeron, parts of Gondomanan and Tegalrejo.
Urban spatial temporal analysis and the urban heat island potential
Authors: Wijayanti P
Published: February 2022

The rate of urbanization has in changes in the urban spatial development, including in the city of Kediri. This study aims to analyze the distribution of urban spatial development in Kediri Regency/City, 2) Analyze the factors the factors that influence the spatial development, and 3) Analyze the UHI phenomenon and its relationship with urban spatial development. This study used Landsat 5 (1996) and 8 (2016, 2021) OLI to analyze Normalized Difference Vegetation Index (NDVI), Normalized Difference Built-up Index (NDBI) and land surface temperature (LST). Ndbi and ndvi are used to determine the urban spatial development, meanwhile lst and ndvi are to analyse surface temperature. The analysis was conducted from 1996 to 2021. Urban spatial development in study area has a linear type along with the development of roads. Built-up land in the study area has increased rapidly in the last 5 years (2016 – 2021) by 83.8% compared to changes that occurred in 20 years (1996 – 2016). This is in line with the increase in urbanization, especially since the advent of the shopping centers. Temperature is increasing in line with the increase in built-up land. There is a potential UHI phenomenon in the study area as indicated by a significant temperature difference between urban and sub-urban. This makes it a challenge for urban spatial planning so that the study area remains a comfortable place to live.
Spatial analysis of air surface temperature using M-AST model in complex sub-urban area
Authors: Fauzan N F , Wibowo A , Shidiq I P A
Published: February 2022

The distinction between urban and sub-urban becomes faded nowadays. The urban sprawl changes and transforms the sub-urban into more stand-alone cities in many ways, even more with the emergence of various activity centers spread over the area. Intense and complex human activities within the area will affect the micro-climatic condition, such as surface temperature and relative humidity. This study aims to identify changes in air surface temperature in a complex sub-urban area, like the IPB University campus and its surroundings in Cibanteng, Cihideung Ilir, Babakan, and Dramaga, of Bogor Regency. The changes in land-cover over some times also needed to understand, as it will raise the surface temperature, especially when natural vegetation turns into the built-up area. M-AST was generated from regression analysis between ground-based air surface temperature (AST) and image-based land surface temperature (LST). The y = 0.9988x + 4.3082 from the M-AST has an acceptable result with 0.70008 in the R2. The highest air surface temperature was found on the built-up area (35.6 °C), and the lowest was on the non-agricultural area (32.9 °C). This study concluded that the increase in air surface temperature of more than 2 °C was caused by changes in land-cover from vegetation to the built-up area.
LST-based threshold method for detecting UHI in a complex urban landscape
Authors: Labib M S , Wibowo A , Shidiq I P A
Published: February 2022

Urban Heat Island (UHI) explains the occurrence of excessive heat that spread unevenly in urban areas. Intense and complex human activities in urban areas are mainly causing the formation of UHI. This study aims to identify the spatial characteristics of UHI in a complex urban feature, like the Universitas Indonesia campus area and its surroundings in Depok City. The campus and its surroundings might represent a complex urban area and can be used as a reference to understand the widespread impact of UHI. UHI was determined based on the threshold value, calculated from the average and standard deviation of the surface temperature. This study utilized Landsat 8 OLI-TIRS imagery to extract Land Surface Temperature (LST) value. The LST observations were collected for three different periods, including 2013, 2017, and 2021. The LST value tends to be increased during these times, with the LSTmax recorded at 34.68 °C, 35.47 °C, and 36.4 °C for 2013, 2017, and 2021, respectively. Based on the number of the accommodated grid, the UHI was getting larger every year. Started from 313 grids in 2013, the UHI has been expanded to more than 550 grids in 2021.
Microplastic pollution in the water and sediment of Krukut River, Jakarta, Indonesia
Authors: Azizi A , Maulida N , Setyowati W N , Fairus S , Puspito D A
Published: February 2022

One of Jakarta’s drinking water sources, the Krukut River, has been contaminated by a variety of industrial and domestic wastes, including microplastic pollution. To investigate the abundance and identify the of microplastics in the Krukut River, water and sediment from 3 sites, upstream, middle and downstream were collected using a water sampler and Ekman sediment grab sampler, respectively. The microplastic from water and sediment was extracted using density separation method. The microplastics were counted and categorized according to the shape under a microscope. The differences in microplastic abundance in three different sites were determined using a one-way ANOVA. The result shows fiber dominated microplastic shape in the water across the sampling sites, whereas pellet dominated microplastic shape in the sediment from upstream to middle-stream. The downstream water has the highest abundance of microplastics (265 ± 5.0 particle/100 mL), which is significantly different (p<0.05) from the middle (221 ± 3.0 particle/100 mL) and the upstream (215 ± 1.5 particle/100 mL). Similarly, the downstream sediment had the largest abundance of microplastics (150 ± 5.0 particle/kg dry weight), which was significantly different (p<0.05) from the middle (125 ± 6.0 particle/kg dry weight) and the upstream (112 ± 3.5 particle/kg dry weight).
The use of waste products of the forestry sector for energy purposes in the central ecological zone of the Baikal natural area
Authors: Gubiy Elena
Published: February 2022

We analyze the problems of using waste products of the forestry sector for energy purposes with the central ecological zone of the Baikal natural area as the case study. From the standpoint of the energy sector, the two main problems that hinder the spread of wood fuel are discussed: pricing and transport of the end product. From the standpoint of the forestry sector, the main problem is the transport of wood from logging sites. We investigate the influence of the annual amount of wood feedstock at wood processing enterprises on the optimal method of wood waste recycling. It is concluded that, at present, wide adoption of fuel pellets and wood chips proves impossible unless supported by state measures.
Features of changes in global energy consumption for the period 2000-2020
Authors: Karpov K A , Nesteruk L G , Shpakovskaya I A
Published: February 2022

The article is devoted to the analysis of the features of changes in global energy consumption over the past two decades of the 21st century. The influence of world crises on energy and demographic parameters is shown. The analysis of the observed changes is carried out on the example of twelve countries that make the main contribution to world energy consumption.
Study of the installation for testing the insulation of electrical equipment with increased voltage
Authors: Vasilyev P I , Khazieva R T , Aflyatunov R R
Published: February 2022

In the article, the authors investigated a device for testing the insulation of electrical equipment with increased voltage. Insulation in electrical devices is an essential design element. The dielectric strength of the insulation is determined by its ability to withstand the continuous rated voltage for which the installation is designed. But in some cases, the strength of the insulation may deteriorate due to moisture or defects. Defects can be air inclusions in solid or liquid dielectric. These air inclusions further create conditions for the occurrence of partial discharges. The article discusses the test schemes that exist today to determine the margin of dielectric strength of insulation. The article presents a diagram of the developed device of the installation for testing insulation based on a single design and technological component. The presented device has a smaller weight and size and more effective voltage gain. The results of mathematical modeling, proving an improvement in gain in comparison with analogs, are given.
Trends in the development of decarbonization in energy systems using information technology
Authors: Bogodukhova E S , Britvina V V , Gavrilyuk A V , Sorokin A Y , Bobrov K R
Published: February 2022

This article is devoted to restoring the energy balance through the integration of alternative energy sources and information technologies, the interconnectedness of which will increase the efficiency of both private and public processes. The aim of the work is to study the decarbonization of the economy and energy systems in the development of renewable energy sources. A comparative analysis of foreign countries that use the largest resources, some are still not used. The study of the territories showed that Russia has significant potential with a concentration of renewable energy sources. Based on the results of the work performed, primary signs of decarbonization of energy in climatic development, bottlenecks of energy systems were identified, and directions of alternative energy in Russia were proposed for energy stabilization. The article is supplied with graphic materials and tables, as well as a detailed description of each stage of the study.
Mathematical modeling of the fuel element of a nuclear reactor taking into account the temperature dependence of the thermal conductivity of the fuel element made of uranium oxide
Authors: Kanareykin Aleksandr Ivanovich
Published: February 2022

The work is devoted to the thermal calculation of the fuel element of a nuclear reactor. Attention was paid to the mathematical modeling of the temperature field under boundary conditions of the first kind. Approximations of the dependence of the thermal conductivity of uranium oxide on temperature in the form of a quadratic function were used for numerical modeling.
Renewable energy production management: a clean green world
Authors: Sergeenko Yu S , Abanina E N , Smagina T A , Nikitenko Yu M , Litvinova Yu M , Bobrakova N V , Svistunova L Y
Published: February 2022

The work is relevant and urgent at the present time due to the consequences of the emergency situation in the countries. Therefore, it became necessary to restructure the work of industrial facilities in order to improve environmental protection with the help of the work of employers and people. In the study, scientists identified the positive and negative aspects of the use of energy in the ecology of the globe, improving the cleanliness of work in the production of enterprises, and also studied the materials (documentation) in the field of regulation of renewable energy sources in the implementation of production in organizations. The article analyzes the international reports of the energy industry, researches of scientists, past international conferences. With the aim of preserving the environment and supporting the ecology in every state and enterprises, there is a need to use natural resources for mixed use of energy through power grids or renewable energy sources. The main theses on the preservation of the environment and the suspension of its pollution, the rise in the purity of the ecological world have been formed.
Energy production as a basis for sustainable development in the BRICS countries
Authors: Barykina Y N , Chernykh A G , Na Bao
Published: February 2022

The article examines the issues of availability of energy resources and energy production in the BRICS countries in the context of sustainable development. The study also analyzes the energy balance and the share of energy sources produced in the BRICS countries. The article describes a contribution of the BRICS countries to global energy demand and production. Using statistics and reports of leading energy experts, a forecast of future consumption and demand was developed. It shows a significant increase in both global demand and energy production. The study proposes measures aimed to address the problems hindering the development of the energy sector in the BRICS countries.
Electrodynamic compensator for high-current contact devices
Authors: Zaitsev Yu M , Nikolaev N N , Russova N V , Stepanov T V
Published: February 2022

Compensators of electrodynamic repulsion forces of closed electrical contacts are designed to increase the stability of the operation of switching electrical devices when short-circuit currents flow. The possibilities of increasing the efficiency of electrodynamic compensators (one-loop and two-loop) in their traditional design are very limited. The paper analyzes an electrodynamic compensator for high-current contacts, in which the free end of the inactive contact included in the design of the compensator with contact pads is bent 180 degrees towards the axis of rotation of the inactive contact. As a result of this, the shoulder, on which the electrodynamic force of repulsion of the contacts acts, decreases. In such a design, the moment of repulsion of the contacts will also be less and the fulfillment of the condition for its full compensation is facilitated. Formulas are given for calculating the additional electrodynamic force of the considered compensator and its contour coefficient. Calculations of the additional electrodynamic effort of the breaker compensator for a rated current of 630A with a short-time withstand current of 40kA have been performed. With the length of the bent part of the inactive contact equal to 25% of the total length of the current loop, the resulting electrodynamic force of the compensator increases by 4.69%. In this case, a 25% reduction in the torque that is repulsive to the contacts occurs.
Decision-making algorithm for the modernization of supercritical TPP water treatment plants
Authors: Veselovskaya E V , Fedorova N V
Published: February 2022

B The transition from traditional ion exchange technologies of water desalination to baromembrane technologies is fully justified from the point of view of ecology. Baromembrane technologies are more expensive methods of preparing additional water for thermal power plants. Therefore, it is necessary in each case to assess the feasibility of upgrading individual nodes of the technological scheme of water treatment. This is especially true for thermal power plants with supercritical parameters, since the preparation of additional water of appropriate quality is possible only with the combined use of reverse osmosis and electrodeionization methods or with the combination of reverse osmosis and ion exchange methods.The article considers one of the possible options for choosing the optimal water treatment scheme based on the analysis of water quality after each stage of purification, the costs of introducing new methods of water treatment, the requirements for the qualification of personnel and environmental indicators of the water treatment plant.
A study of innovative technologies in the fuel and energy sector
Authors: Dyukova V V , Mongush Y D , Haustovich N A
Published: February 2022

In our changing world, innovative technologies play an important role in the development of the fuel and energy industry. The use of green energy and the gradual abandonment of hydrocarbons are gaining popularity due to their negative impact on the environmental situation in the world. This phenomenon gives a new direction in the development of innovative technologies whose main purposes are to improve efficiency of energy consumption, to reduce costs and emissions into the atmosphere. The problems of the fuel and energy sector are serious, as this sector is a dangerous polluter of the environment. According to the Paris Agreement, governments have adopted laws and created zero-emission roadmaps to reduce emissions and support developing countries. The article describes innovative technologies that contribute to the development of the global fuel and energy sector, and forecasts when this sector will become environmentally friendly. At the current stage of development of the fuel and energy sector, the most popular energy source is hydrogen, as it is considered to be an incentive to improve efficiency of traditional energy consumption.
Determination of the thickness of the flame front using mathematical modeling of the temperature field
Authors: Kanareykin Aleksandr Ivanovich
Published: February 2022

The work is devoted to the process of gorenje. Attention was paid to mathematical modeling of the flame temperature field under boundary conditions of the third kind. This takes into account convective heat transfer.
Decomposition of the Mathematical Model of Precision Neutron-Physical Calculations of Nuclear Reactors
Authors: Okunev V S
Published: February 2022

The main goal of the work is to assess the possibility of minimizing the design time of nuclear reactors. The achievement of the goal is facilitated by the development of hierarchical models of neutron-physical calculation of the reactor. The models assume the use of a single software package, which eliminates errors associated with the inconsistency of mathematical models used at different levels. The work uses the well-known MCU code, developed by specialists of the NRC “Kurchatov Institute” and the author’s codes. To analyze the void reactivity effect in fast reactors with a traditional geometric shape of the core, a two-level model is used. For studies of a strip zone reactor, an intermediate level of hierarchy is required: a three-level model is used. The subsystem of the lower level is characterized by the minimum time spent on calculations. It allows you to estimate the exact upper bound of the void reactivity effect. Thus, at the stage of preparing a technical proposal, it is possible to limit ourselves to using only the lower-level model, which will reduce the research time by an order of magnitude. This model made it possible to quickly solve a number of practical problems. The significance of research is determined by the possibility of easy adaptation of the model to reactors of different types and to use as the base code of any software package for precision neutron-physical calculation of the reactor. There is no need to use a third-level subsystem to analyze the void reactivity effect in reactors with an unconventional core or low-power reactors. The subsystem gives highly overestimated void effect results. The proposed models are used for post-optimization analysis, computational experiment, and parameterization procedures.
Digital research technology of a specialized electric drive with an asynchronous electric motor
Authors: Yu Loginova E
Published: February 2022

A method is proposed and the possibilities of using the application program Simulink of the MATLAB package for analyzing the characteristics of a special electric drive based on an asynchronous electric motor are considered. A special feature of the electric drive is the working machine. The moment of resistance of the working machine depends non-linearly on the speed of the electric drive. The actuator uses system Direct Torque Control. Methods for analyzing the stability of the operation of an electric drive in the most severe operating modes - starting and changing the control action - are considered.
The ratio of chemical bond components in metals and nonmetals and their classification into conductors, semiconductors and dielectrics
Authors: Sirotkin O S , Sirotkin R O , Pavlova A M
Published: February 2022

The article considers the influence of chemical bond components (covalent character CC, metallic character CM and ionic character CI, in %) in homo- and heteronuclear substances and materials on their classification into classes of electrical conductivity: conductors, semiconductors and dielectrics. Consideration of the influence of the chemical bond type (via CC, CM, CI) on the nature of the electrical conductivity properties of homo- and hetero compounds and respective materials showed the influence of all three components of the chemical bond on it. As a result, it became possible to classify homonuclear compounds of elements by electrical properties into three groups of materials: conductors - CC < CM; semiconductors - CC ≍ or > CM; dielectrics - CC > CM. A good correlation of the ratio of these components with the values of their electrical resistivity, the width of the band gap and the type of conductivity was established. It was found that the increase in electrical conductivity in heteronuclear binary materials, in general, is determined by the growth of CM.