bluuebunny/crossref_metadata_2025_split huggingface dataset:
Green economy as a condition for sustainable development of the Baikal region
Authors: Babikov V A , Urbanova Ch B , Maladaeva O K 
Published: November 2021

Abstract
The article analyses the development of a new conceptual direction of sustainable development for our country and the Republic of Buryatia, namely, “green economy” based on the rational use of natural and secondary resources, through low carbon development, recycling and reuse of waste and municipal solid waste, as well as unification of the regulatory framework in the relevant areas of economy and production. The authors identified the so-called “markers” activating and hindering the development of green economy in Baikal region, compared them with the most favourable regions for living and also with neighbouring regions in order to provide a rationale for the most promising areas of green economy for our region, which are: digitalization of the economy and public life in general, genetic engineering and various biotechnology, creating new equipment and materials (nanotechnology), various areas of tourism and recreation. As a result, it was concluded that: “green economy”, should become an important element of the concept of sustainable development of the Baikal region, it is this concept of development of the region highly coincides with the global trend of sustainable “green” low-carbon development and transformation.
External economic activity of the leading sectors of the marine economy of the Pacific Russia: current trends of the crossborder cooperation
Authors: Moshkov A V , Kornienko O S 
Published: November 2021

Abstract
Pacific Russia is a region with a unique natural resource and economic potential, where effective socio-economic development is possible due to its favourable economic and geographical location and cross-border cooperation in the Asia-Pacific region. An important role in the development of foreign economic cooperation belongs to the sectors of the marine industry. At the same time, it should be noted that the commodity structure of exports from the Pacific region of Russia is dominated by products with low added value, and in the structure of imports, on the contrary, manufacturing products. The current trends in cross-border cooperation are due to the current structure of production in Pacific Russia, the influence of natural resource and transport factors, and the demand of foreign consumers. In Pacific Russia, there are coastal (Pacific) “Northern” and “Southern” socio-economic zones - in the “Northern”, there is the highest share of mining, production and distribution of electricity; in the “Southern” – a high share of fishing and fish farming, manufacturing, services, transport and communications.
Factors and influence of modern challenges on demographic situation in Siberian regions
Authors: Dmitrieva Yu N 
Published: November 2021

Abstract
The article determines basic factors that influence on demographic processes in Siberia. It is underlined that fall of relative reproduction indices reflects natural transition of population groups born in 1990s to reproductive age. We analysed indices of birthrate, death rate and natural population growth among Siberian regions. It is distinguished that natural population growth is typical for districts with traditionally high relative birthrate indices and for those with high salary level. The author underlines that value of average total birthrate coefficient is not enough for simple reproduction of population in the region. In the article we have presented the reasons of migration outflow from Siberian subjects to the west of the country. It is emphasized that modern social tendencies in the society are challenges for demographic situation in Siberia: high indices of divorces, late giving birth to the first child, orientation for having one child in a family.
Landscape-climatic features of the reforestation dynamics pyrogenically transformed geosystems of the Tunkinskaya depression
Authors: Atutova Zh V , Voropay N N , Shuklina E S 
Published: November 2021

Abstract
In order to identify the features of the dynamics of the soil temperature regime during the post-fire restoration of the subtaiga light-coniferous geosystems of the Tunkinskaya depression, a study of the demutation processes in the pine forests of the Badar urochishche was conducted. Our research is based on the data of observations initiated after the fire that took place in 2010. The model key areas were selected at intact landscape complexes that did not experience pyrogenic influence, as well as the territory subjected to forest fires. Comparing the dominant composition of secondary succession biocenoses with natural plant communities in the background key area, indicators of the prospects for successful reforestation were identified. The analysis of 10-year data on the observation of the soil temperature regime from the surface to a depth of 3.2 m was carried out at the selected sites. The differences between the soil temperatures in the disturbed and natural sites, which vary during a year were revealed. During the observation period, a decrease in microclimatic differences was observed with the regeneration of vegetation cover, which indicates the restoration of the temperature regime in the pyrogenic-disturbed area.
Assessment of impact of combined heat on the environment of urbanized areas (case study of Ulan-Ude, Russia)
Authors: Dmitrieva A V , Khertuev V N , Konovalov P V , Barmitova I A 
Published: November 2021

Abstract
Combined heat and power plants (CHPP) are an important component of the energy balance in many countries. However, of all types of power plants, CHPPs have the largest impact on the environment. In recent years, the urban ecology has become one of the key indicators that determine the quality of life of city residents. The article evaluates the impact of the CHPPs in Ulan-Ude on the example of CHPP-1. The main sources of environmental pollution, and, accordingly, the zone of exposure of CHPP-1’ pollutants have been identified. Virtually the entire territory of the city of Ulan-Ude falls under this zone, but since northwestern winds prevail in this area, the north-western part of the city is most affected. Based on the results of a detailed dispersion calculation, we defined the following substances which should be monitored: nitrogen dioxide, sulfur dioxide, mineral oil, and inorganic dust (70-20% SiO2 and coal dust). The concentration of these substances in the air is significant.
Ecological and geochemical features of the landscapes of the Baikal State Natural Biosphere Reserve
Authors: Yu Elsukova E , Yu Arestova I , O Chunyaeva E , Mordovskoy E O 
Published: November 2021

Abstract
The aim of the study is a comprehensive assessment of the state of natural-territorial complexes of the Baikal State Natural Biosphere Reserve, including an ecological and geochemical assessment of soils, analysis of plant communities, determination of the ecological and biogeochemical features of the vegetation of the area. The distribution of mobile forms of heavy metals in the soils of the Baikal Biosphere Reserve has been studied. The coefficient of total soil pollution has been calculated. The maximum allowable concentrations exceedances for Cr, Mn, Cu and Pb were registered. Analysis of the microelement composition of the crust of Pinus sibirica showed the accumulation of Cd and Ni in relation to the Dobrovolsky clarke in all the studied areas of the reserve. Based on the studies carried out, it can be recommended to monitor the ecological state of natural territorial complexes on a regular basis on the territory of the Baikal State Biosphere Reserve.
Comparative analysis of anthropogenic impact levels and payments for natural resource use in the Russian model areas
Authors: Ayusheeva S N 
Published: November 2021

Abstract
An assessment of the effectiveness of the existing system of paid nature natural resource usage in terms of the effect of reducing the negative impact on the environment by nature users is considered. The theory and practice of the effectiveness of environmental investment, as well as environmental management fees, were used as the basis of the methodology. The basis of the methodological tools consists of calculation and analytical, comparative methods, methods of system and structural analysis. The model territories of the ecological rating of the constituent entities of the Russian Federation are determined, the degree of anthropogenic impact is estimated on the basis of specific pollution indicators, the analysis of environmental investment features in the selected territories is carried out, the need for improving environmental policy is proved on the basis of the assessment of the ratio of payment for regulatory and excess pollution by environment.
Solution to the problems of complex use of mineral raw materials
Authors: Khudyakova L I , Buyantuev S L , Buyantuev V T 
Published: November 2021

Abstract
The increasing pace of construction in areas in eastern Russia is leading to an increased demand for building materials. To meet this demand, local raw materials, including basalt, are widely used. In this article, we have shown the possibility of complex use of basalts in the production of various types of products. Using low-temperature plasma, basalt fibre with good physical and chemical characteristics was obtained. It possesses high heat-resistance (up to 700°C) and alkali resistance, and is stable in aqueous medium. Using mechanical activation method composite binding materials were obtained. Technological parameters of their production are determined. It is shown that the binding materials with optimal composition have a compressive strength higher than the strength of the control sample by 18%. The integrated use of mineral raw materials allows us to solve the issues of energy efficiency, resource conservation and environmental safety in the development of mineral deposits and the production of new types of products.
New technique of sample preparation of Quaternary lake sediments for palynological and chironomid (Insecta: Diptera) analyses
Authors: Enushchenko I V 
Published: November 2021

Abstract
Almost six-years’ experience of my work on isolation and study of macrofossils of chironomid larvae showed that the conventional technique of lake sediment sampling has significant drawbacks. This paper describes the author’s method of sample preparation of lake sediments to isolate and determine macrofossils of Chironomidae larvae for paleoclimatic reconstruction. The advantage of the proposed technique is better washing of sediment samples, which facilitates a more complete sampling of the macrofossils, as well as its applicability for palynological analysis.
Numerical study of the Effect of CO2 on the NH3/CH4 Counterflow Diffusion Flame in O2/CO2/N2 Atmosphere
Authors: Li Conghao , Wang Jingfu , Chen Ying , Zhang Xiaolei 
Published: November 2021

Abstract
Ammonia, as a carbon-neutral fuel, draws people attentions recently. NH3/CH4 blends is considered as a kind of fuel. A numerical simulation of the effects of CO2 dilution on the combustion characteristics and NO emission of NH3/CH4 counterflow diffusion flame was conducted in this study. Diffusion flame structure, the influence of CO2 radiation characteristics on temperature and NO emission characteristics were studies at normal temperature and pressure. The dilution and radiation of CO2 reduce the flame temperature significantly. NO concentration decreased with the CO2 mole fraction increase effectively. The study extends the basic combustion characteristics of NH3 containing fuel.
Effect of Photoconductivity of Silicon Oxide Passivation Film on the Performance of Crystalline Silicon Cell and Module
Authors: Wang Shaoliang , Zhou Gang , Wang Yilun , Deng Xiaofan , Xie Bingxin 
Published: November 2021

Abstract
In the paper, the effect of different deposition process of silicon oxide passivation film on the performance of crystalline silicon cell and module was studied. It was found that the thermal oxidation passivation film has better passivation effect than ozone oxidation passivation film at room temperature, and the cell and module has good stability and low attenuation. The thermal oxidation passivation effect is related to the film thickness. The thicker the film thickness is, the better the anti-PID (potential induced attenuation) performance is. The results can provide reference for photovoltaic industry.
Foreign Body Detection and Analysis in Gas Insulated Switchgear Based on Vibration Signal
Authors: Wu Xutao , Ma Yunong , He Ninghui , Li Xiuguang , Ma Bo , Han Xiuying 
Published: November 2021

Abstract
Maintenance tools are often left inside the equipment in the process of installation and maintenance of Gas Insulated Switchgear (GIS). Vibration detection can make up for the shortcomings of foreign body detection in traditional GIS to a certain extent. In this paper, the vibration signal during the operation of the circuit breaker is collected and analyzed based on the 330kV GIS test platform. Through the method of Ensemble Empirical Mode Decomposition (EEMD), by comparing with the multiple measurement results between the two cases of whether there is a foreign body in the equipment or not, it is found that there is a great difference in the characteristics of the two kinds of vibration signals. The presence of most foreign objects can be detected by the above methods.
Influence of CO2-brine-rock Interactions on the Physical Properties of Tight Sandstone Cores via Nuclear Magnetic Resonance
Authors: Liu Hanbin , Li Chengzheng , Zhao Zhenfeng , Wang Guangtao , Li Changheng , Zhao Jinsheng 
Published: November 2021

Abstract
For sandstone reservoirs with extra-low permeability, CO2 injection is regarded as a valid method to enhance oil recovery. When CO2 injection is implemented in such reservoirs, the physical properties of the formation could be altered owing to the interactions between CO2, water, and rock. In this study, the influence of CO2–brine–rock interactions on the physical properties of tight sandstone cores was analyzed by comparing the obtained T

2
spectrum before and after CO2 injection. The results revealed that the T2 spectrum after CO2 injection was significantly different from the original T2 spectrum. CO2 injection changed the pore size distribution of the core samples. When the injection pressure was low, the pore volume decreased from micropores to macropores leading to a decrease in both permeability and porosity. As the injection pressure increasing, the dissolution of CO2 in the micropores was enhanced thus improving the pore-throat connectivity; which ultimately improved the reservoir physical properties.
Preparation of High-purity Alumina via Hydrolysis of Aluminum Isopropoxide after Desilication with Lanthanum Oxide
Authors: Yin Qinnan , Jin Huixin , Wu Fuzhong , Wang Weijie , Yang Qian 
Published: November 2021

Abstract
High-purity alumina refers to ultra-fine alumina powder with a purity exceeding 99.99% and a uniform particle size. This material exhibits excellent corrosion resistance, high-temperature resistance, wear resistance, and oxidation resistance. Owing to the high silicon content of alumina prepared by means of the alcohol-aluminum hydrolysis method, the purity of the alumina is often unsatisfactory. Therefore, in this work, a new method for adding lanthanum oxide to isopropanol in the early aluminum isopropoxide synthesis stage is proposed. When lanthanum oxide was added, the silicon content of the precursor aluminum isopropoxide decreased to 0.0051%.Remove calcium, sodium, magnesium and other impurities by cleaning with hydrochloric acid under an ultrasonic field. The optimal hydrolysis conditions were determined as follows: hydrolysis temperature: 55, hydrolysate concentration: 80%, water to alkoxide ratio: 6:1. The alumina precursor calcined at 1200 yielded a high-purity alumina with a purity level of more than 99.99%, and the particle size reaches 2.037 μm.
A Method for Segmentation of Transformer Oil Level Region Based on Infrared Image
Authors: Chen Ying , Fan Songhai , Liu Yicen , Ma Xiaomin , Shi Zhu 
Published: November 2021

Abstract
With the rapid development of computer and artificial intelligence technology, infrared images are playing a higher and higher value in the state monitoring of electrical equipment in substations. Aiming at the detection of the oil level area of the oil conservator in the substation, in order to accurately obtain the oil level information, this paper proposes a transformer oil level detection method combining maximum entropy threshold segmentation algorithm and SLIC (simple linear iterativeclustering) segmentation algorithm. First, the original infrared image is pre-processed by image cutting technology to obtain the infrared image of the oil pillow area; the green channel image is extracted, and then the infrared image is segmented by the maximum entropy threshold segmentation algorithm to remove the background interference and obtain the target area of the electrical equipment. Finally, SLIC is used to super the pixel segmentation algorithm performs segmentation to obtain the oil level area. Experiments show that the algorithm can clearly segment the oil level area of the oil pillow, and it has certain practical value.
Composting of food waste in passive aerated bioreactor with turning mode
Authors: Zahrim A Y , Darwis M , Samantha D , Siti Hasanah A Z , Nur Aqeela S A , Junidah L , Sariah S , Mariani R 
Published: November 2021

AbstractAlmost 45% of municipal solid waste in Malaysia consist of food waste. Composting is one of the sustainable ways to manage food waste compared to incineration and landfilling. This paper investigates the physicochemical and phytotoxicity characteristics during food waste composting in passive aerated bioreactor assisted with compost turning. The initial compost mixture consists of 124 kg of food waste mixed with 62 kg of dry leaves. The composting process was conducted for 40 days, and physicochemical characteristics i.e., temperature, moisture content, total organic carbon, pH and conductivity were monitored. Seed germination test was conducted with cabbage seeds (Brassica oleracea). The highest temperature and final moisture content obtained were 42 °C and 78%, respectively. The seed germination index value was 127%, indicating that the compost is suitable for plant growth.
Thermogravimetric kinetic analysis of in-situ catalytic pyrolysis of palm oil wastes with the presence of palm oil wastes ash catalyst
Authors: Hii S W , Chin B L F , Yiin C L , Majing F R S , Jawad Z A , Lim H Y , Yusup S , Acda M N , Unrean P , Rianawati E 
Published: November 2021

Abstract
The thermal degradation and kinetic analysis for oil palm frond (OPF) and oil palm trunk (OPT) with its ashes were investigated using thermogravimetric approach (TGA). OPF ash, OPT ash and its mixtures are used as a natural source of catalysts in the pyrolytic conversion of the palm oil wastes to bioenergy. The TGA experiments were conducted in a range of heating rates of 10-100 K/min from the temperature of 323 K to 1173 K. Coats-Redfern model is applied in this study to evaluate the activation energy (EA
) and pre-exponential factor (A). The average EA
values ranged 24.27-32.36 kJ.mol−1 and 41.42-46.10 kJ.mol−1 for pyrolysis of OPF and OPT respectively. Meanwhile, the average EA
values ranged 24.27-31.06 kJ.mol−1 and 31.77-43.45 kJ.mol−1 for catalytic pyrolysis of OPF and OPT respectively.
Fabrication and characterization of chitosan-titanium oxide nanotubes scaffolds reinforced with tiger milk mushroom
Authors: Rosli N , Loh H-S , Chiang C L , Lim S S 
Published: November 2021

AbstractChitosan-based scaffolds have been reported to promote cellular activities but lack mechanical strength which is much sought after for bone regeneration. The current research work aided to reinforce chitosan-based scaffolds with tiger milk mushroom (TMM) powder, a naturally occurring polysaccharide. Scaffolds of chitosan-titanium oxide nanotubes (TNTs) reinforced with tiger milk mushroom (TMM-CTNTs) were fabricated via direct-blending and freeze-drying methods. Prior to that, TNTs were hydrothermally synthesized and blended with chitosan solution and TMM powder at 1-5 weight percent (wt %). The pore size, microstructure, porosity, swelling, degradation, compressive modulus and functional groups of resultant scaffolds were characterized. These cylindrical scaffolds of TMM-CTNTs showed pore size of 48 – 68 μm. The addition of TMM from 3 wt% to 5 wt% in scaffolds reduced the porosity from 81.7 % to 79.9 %. The compressive modulus of 3 wt%-5 wt% TMM-CTNTs scaffolds increased %from 0.013 MPa – 0.038 MPa. The incorporation of TMM influenced the swelling property of scaffolds. The swelling percentage of TMM-CTNTs reduced from 400% to 373% as TMM powder was introduced from 1 wt% to 5 wt%. The degradation ratio increased from 0.959% to 2.385 % as TMM powder was introduced from 1 wt% to 5 wt%. The Fourier-Transform Infrared (FTIR) spectra of TMM-CTNTs scaffolds revealed the presence of β-glucan which verified that the processing methods in this study preserved the medicinal property of TMM. A preliminaryin vitrotest, MTT assay, was used to study proliferation rate of MG63 (osteoblast-like cells) cultured on TMM-CTNTs scaffolds with different weight percent of TMM. Notably, the cells proliferation of MG63 showed high biocompatibility at 3 days of culture.
Synthesis and characterization of perovskite-supported CoNi catalyst for CO oxidation via exsolution
Authors: Lew G L , Ibrahim N , Abdullah S , Daud W R W , Ramli W K W 
Published: November 2021

Abstract
The introduction of perovskite oxide as catalysts alternative has increased the worldwide interest due to its advantages such as its versatility to accommodate different transition metals. This study set out to evaluate the catalytic activity of CO oxidative perovskite catalysts (LCCNTO), fabricated via solid-state method and reduced under various reducing condition for the exsolution of the active metals, Cobalt-Nickel (CoNi) from the perovskite lattice. The effect of reducing parameter modification towards the catalytic activity of the fabricated LCCNTO was discussed in terms of CO conversion and CO2 production rate. Through the light-off test, the sample that reduced with the longest deration (S2T10H6-R5H5) showed the highest CO conversion of 45.45% and CO2 production rate of 0.1409 × 10−4 mol s−
1g−1 at the reaction temperature of 500 °C. Not only that, it was discovered that by controlling the reducing duration, the initiate temperature for the reaction to occur was lowered from 360 °C (S2T10H6-R5H3) enabling the reaction to occur at lower temperature at 280 °C in S2T10H6-R5H5. Under the same reducing temperature, the CO2 production of sample reduced for 200 minutes (S2T10H6-R5H3) started at 360 °C but as the reducing duration increased to 300 minutes (S2T10H6-R5H5), the CO oxidation initiated at a much lower temperature of 280 °C. Although LCCNTO catalyst still suffer from similar deterioration as the other reported base metal catalyst, but tuning the reducing duration given to a sample, it greatly affects the initiation temperature for the reaction to occur.