bluuebunny/crossref_metadata_2025_split huggingface dataset:
Success Factors of the Implementation of State Measures of Investments Stimulation in Russian Timber Industry
Authors: Ivantsova E D 
Published: March 2021

Abstract
Investment activity is critically important for the development of natural resource management industries in Russia. We believe that these significant volumes of natural resources that Russia possesses can be effectively exploited provided that an effective government policy that stimulates investment is formulated and implemented. When forming an effective industry investment policy, it is advisable to consider domestic and foreign experience, which necessitates a comprehensive analysis of existing investment attraction measures. Firstly, this paper provides an overview of the state investments stimulation mechanisms in natural resource sector, in particular, in timber industry. The most common and effective measures are identified, as well as the institutional features of their application environment. Secondly, the mechanism of priority investment projects implemented in Russia in the field of forest development is being examined in detail, a number of problems associated with its implementation are described. An econometric model is developed to grasp the factors determining the successful implementation of priority investment projects in Russia. The research results provide valuable information for decision making at the state level on the selection of investment projects to be supported.
Assessment of the Impact of Human Capital on the Gross Regional Product (for Example, the Udmurt Republic)
Authors: Pushina N N , Sokolova N G , Likhachev V 
Published: March 2021

Abstract
The authors focus on the measurement of the impact of human capital on economic growth because of negative trends in population, decreasing cash incomes, "brain - drain", decline in the quality of education and growing stratification in access by income level. It is pointed out that the existing tools of human capital valuation should be analyzed and tools for assessing the impact of human capital on economic growth have essential significant. Authors put forward a hypothesis that the growth of human capital drives to GDP growth or GRP growth is it is about a region. The article provides raw data and calculations of indicators of efficiency of use of capital goods and human capital for the Russian Federation for 2014-2016 and for the Udmurt Republic for 2013-2017. Conclusions drawn from calculations formulating indicate that the hypothesis concerning direct correlation between cost of human capital and efficiency of use tangible and intangible assets is failure. Particularly it is showed that the increase in the cost of human capital went hand in hand with decreasing of the efficiency of use of tangible and intangible assets in 2014 and 2016.
Condition Assessment Industrially Contaminated Soils of Kuzbass by Bioindication
Authors: Malchik A G , Rodionov P V , Tishchuk A A 
Published: March 2021

Abstract
This work evaluates the state of the soil that has undergone negative changes as a result of technogenic impacts, the presence of pollutants - heavy metals, considers the assessment of the state of the soil by the bioindication method. Shell amoebae, which are unicellular organisms, as well as earthworms and plants, were used as bioindicators. We also studied the ratio of the concentration of heavy metals in the soil to the distance of these soils from the source of heavy metals, and the seasonal dynamics of changes in the content of heavy metals in the soil. Using the method of stripping voltammetry, results were obtained on the presence of heavy metals in soil, earthworms and plants.
Environmental Problems of Biofuel Production in Modern Energy
Authors: Makhonko N I , Plotnikova Yu A , Tarasova E A , Varshamova N L , Yashina E V 
Published: March 2021

Abstract
One of the major challenges facing every developed state in recent decades has been ensuring that the national economy is energy-based and moving towards a sustainable energy future. The geopolitical interests of the leading world countries are formed and corrected by the well-known consequences of the shortage of hydrocarbons, efforts to ensure their own energy security and environmental issues. Therefore, the development and implementation of the state-of-the-art biofuel production technologies has become a matter of preoccupation for many states. The level of environmental and legal support for innovative energy options rely inextricably on the natural energy endowment, the development of a research base, the political and economic interests of states in achieving energy independence, as well as a public demand for environmental preservation over their national territory and neighboring states. This article attempts to study the legal framework for the eco-efficient biotechnology development in the energy-fuel sector of Europe, the United States and Latin America to harmonize national legislation and regulate relations within the framework of international cooperation. Under the economy-wide assessments the authors reviewed biofuel output figures in these countries, the biofuel production and use supply ratio in national energy systems, energy companies’ activities in the area of research and applying of various types of biofuel to production. The article proved possible to identify new interesting developments in this area and reach the understanding on the necessity for further active efforts in identifying a common approach to the biofuel targets in contemporary energy system within the context of wide-ranging environmental challenges.
Catode and Anode Processes in Sulfur Corrosion Destruction of Metal Constructions of Prolonged Exploitation in an Aggressive Environment
Authors: Makarenko V , Maksimov S , Makarenko Yu 
Published: March 2021

Abstract
The analysis of the literature and the practical data show that the existing scientific and technical and technological developments concerning the provision of reliable cross-mechanical stability and durability of the pipelines of the oil and gas industry are largely contradictory and uncertain; there was a need for a systematic study of the causes, conditions and mechanisms of corrosion damage of long-term equipment, features of cathodic and anodic processes in hydrogen sulfide destruction, in particular sulfur-hydrogen metal degradation. From the analysis of corrosion processes, we can draw the following conclusions: a) corrosion always destroys the anode, i.e. the electrode with a more negative potential; b) the cathode is not destroyed by corrosion and there is a process of depolarization, that is the removal of electrons; c) during hydrogen depolarization, electrons are neutralized by hydrogen ions and hydrogen gas is released from the cathode surface; d) during oxygen depolarization, the electrons are removed by oxygen dissolved in the electrolyte, which enters from the air or together with the environment; e) depolarization leads to a significant convergence of the values of the potentials of the electrodes and reduce the corrosion rate. Despite the large number of literature sources describing the experimental works, there is no single view of the mechanism of cathode and anode processes in the hydrogen sulfide degradation of oil and gas pipelines. This is explained by the multiplicity of factors affecting this mechanism, the complexity and insufficient study of individual elementary physicochemical processes, and therefore requires additional theoretical and experimental studies
Uncertainty Analysis Applied to Predicting Water Inflow in Confined Water
Authors: Xu Chengcheng , Lu Chuiyu , Wang Jianhua 
Published: March 2021

Abstract
In order to predict the amount of water inflow accurately, define the corresponding water influx response quantitatively in the parameter variation interval, this paper used the interval uncertainty analysis method, combined with the non-probability set theory and derived the predictive formula of confined water inflow under two conditions, the formula comes from the initial deterministic simple large-well method calculation formula to the consideration of parameter variation uncertainty fusion large-well method calculation formula transformation. Using the mining data, comparing the upper and lower limits of the actual calculated boundary obtained by the Monte Carlo method and of the derived formula, the relative error of the calculation result of the confined water inflow expression under the two conditions is calculated 5% and 10% or less, corresponding to the rate of change of the parameter variables, the results show that: according to the first formula calculated by the empirical formula, the relative error of the water inflow are 5% and 10%, the corresponding rate of change of the parameter variable are 0.109 and 0.14; according to the second formula calculated by the actual survey calculation, when the relative error of the water inflow are 5% and 10%, the change rates of the corresponding parameter variables are 0.274 and 0.131 respectively. Under the identical error condition, the maximum value change rates of the parameter are greater than the change rates of the parameter when the minimum value is calculated, which is beneficial to the upper limit of the calculation of mine water inflow.
Water Composition Changes in the Bureiskoe Reservoir after a Landslide and Blasting
Authors: Kondratyeva L M , Golubeva E M , Litvinenko Z N 
Published: March 2021

AbstractData on changes in the qualitative composition of volatile organic compounds and content of elements in waters of the Bureiskoe Reservoir after a great landslide, which blocked access to the hydroelectric power station, were presented. Blasting with use of trinitrotoluene and hexogen carried out to restore the hydrological regime by creating an artificial channel. Maximum content of methanol and acetone were recorded in water samples taken at the right bank near the landslide, where a lot of disintegrated wood entered the water after river tsunami. After filtering water through a landslide body, the content of Al, Fe, and Pb increased, and content of Mg, Ca, Zn, and Cd decreased. After restoration of the reservoir flow in water samples from the artificial channel, the content of Fe, Mn, Al, Cu, and Zn was at a low level and did not reach the initial values established before the blasting began. However, an increase the content of Pb by 7 times and Hg by 80 times was recorded. Presence of methanol and methylated benzene derivatives in water could stimulate the formation of more toxic bioavailable methylmercury, posing risks to aquatic organisms.
Intercropping with Oyster Mushroom (Pleurotus columbinus) Enhances Main Crop Yield and Quality
Authors: Hamed Hend A , Mohamed M F , Hosseny M H , El-Shaikh Kh A.A 
Published: March 2021

Abstract
This research trial was conducted in the open field to assess the integrated cultivation of oyster mushroom Pleurotus columbinus and field-grown vegetable crops. Oyster mushroom intercropped within cabbage (Brassica oleracea var capitata) and cauliflower (Brassica oleracea var botrytis) rows at the beginning of even head or curd formation. Data revealed superior intercropped cabbage and cauliflower growth parameters and higher yields compared with the respective sole cultivation. Pleurotus columbinus fruiting bodies weight, cab diameter, and total yield were significantly higher for mushroom intercropped with cauliflower than with cabbage. However, no differences or inconsistent differences were observed in fruiting bodies number, cab thickness, stem length, and stem diameter. Analysis of some mushroom fruiting bodies chemical composition showed that mushroom/cabbages intercropping surpassed mushroom/cauliflower intercropping in total phenols. However, no significant difference was observed between cabbages and cauliflowers concerning crude protein, total antioxidant activity, and total flavonoids. It is concluded that oyster mushroom/cabbage or cauliflower intercropping can provide additional marketable protein-rich food as well as enhance cabbage and cauliflower crop productivity based on sustainable practice.
Comparison of Hematological and Biochemical Parameters of Clinically Healthy Buck Kid of Saanen, Sapera, and Ettawa Crossbred in Indonesia
Authors: Sarmin  , Widiyono I , Anggraeni D 
Published: March 2021

AbstractThe Saanen goat has adaptation abilities and is used for genetic improvement through crossbreeding programs with Ettawa breeding to produce Sapera goats in Indonesia. The development requires support for data to determine health and metabolic status. Sixteen juvenile buck goats aged 4-6 months, comprising five Saanen, seven Sapera, and four Ettawa crossbred goats, were used in this study. Blood was collected aseptically through the jugular vein for hematology and biochemical analyses. There were no statistically significant variations in most hematological and biochemical variables, except MCH, MCHC, and P-LCR. MCH in juvenile bucks of both Saanen (40.26 ± 6.94 ρg) and Sapera goats (37.96 ± 6.24 ρg) were lower than that in juvenile bucks of the Ettawa crossbred goats (61.63 ± 19.74 ρg). MCHC in juvenile bucks of both Saanen (40.96 ± 6.82 g/dL) and Sapera goats (37.01 ± 6.72 was lower than that in juvenile bucks of Ettawa crossbred goats (61.18 ± 23.15 g/dL). P-LCR in juvenile bucks of Ettawa crossbred goats (41.30% ± 10.95%) was significantly lower than that in juvenile bucks of both Saanen (63.48 ± 8.98%) and Sapera goats (69.00 ± 12.00%). Besides, no statistically significant variations were observed in enzyme, iron, lipid, and electrolyte activity in all three breeds.
Water Resources Management: Green Watershed Index (GWI)
Authors: Caro C A , Bladé E 
Published: March 2021

Abstract
A large number of indices and indicators of water performance at the basin level exist throughout the world, however, the need to generate tools that allow the monitoring of basins from their administration and water and environmental management, takes greater force in a global context where sustainability takes great importance. The GWI (green watershed index) methodology is presented, as an extension of urban control methodologies, but this time for rural watersheds. The method is implemented in some rural areas of Colombia, and in some cases the difficulty of implementing the methodology is evidenced, and in other cases the opportunity to improve the management and administration of water resources at the level of rural basins.
Surveying the Effects of the Deep-Sea Tailings Disposal of Mine Wastes in Toledo City, Cebu, Philippines Three Decades After Mine Closure
Authors: Cabahug A N , Clemente E D , Lariba R S , Seblos G M 
Published: March 2021

Abstract
From 1971 to 1991, a major mining company performed submarine tailings disposal (STD) with the outfall at the coast of Ibo, Toledo, reaching up to 100,000 tons per day. In this study, five sampling points were selected near the outfall to determine if the STD is still a major factor in the physicochemical conditions and concentration of heavy metals in the areas near the outfall in Tañon Strait 28 years after the last disposal of mine tailings. The study found that Fe, Mn, and Cu contents on beach sediments significantly decreased around the outfall, as well metal contents on seawater which are within the DAO-2016-08 standards. Physicochemical parameters showed values within the normal range and standards. Comparing the species count from 1983 to 2019, the drastic decline can be attributed to ocean acidification, acid mine drainage, and siltation from Sapangdaku River.
The Water Pathway and Microfluidics: A Potential Solution to the Global Water Crisis
Authors: Santana Harrson S. , Markos B , Silva Jr João L. , Taranto Osvaldir P. 
Published: March 2021

Abstract
How can we ensure the access to water, a basic resource, for the global population? Among the several challenges related to water, we can highlight the reduction of water availability inherent from the climate changes, fountain contamination due to the low sanitation levels and the losses related to leaking in the distribution systems. In the present paper was presented a script for the cycle of use/reuse of water in human activities, “The Water Pathway”, and the use of Microfluidics as a technology capable to be used along this cycle. Our main goal was to identify fundamental stages along the different steps of the use/reuse water cycle in distinct human activities. Also, a generic flowchart was proposed to aid the identification of required knowledge and skills in the stages of the cycle. Then, some applications of Microfluidics in the Water Pathway were highlighted.
Passive Cooling Strategies for the Enhancement of Historical Buildings: A Comparison between Ventilation Chimneys and Courthouses
Authors: Laurini Eleonora , Vita Mariangela De , Berardinis Pierluigi De 
Published: March 2021

Abstract
The balancing of protection needs and performance improvement are essential to keep in use valuable buildings. For this reason, it is fundamental to evaluate the effects on the energetic behaviour and conservation issues caused by retrofit measures in historical structures. The research aims at the performance improvement of Architectural Heritage promoting passive cooling strategies through a comparison between ventilation chimneys and historical courthouses. The architect J. R. Gordon (1863-1937) designed seventeen courthouses in Texas, twelve of which are still existing and functioning at this time. Reinterpreting the period’s attention in mechanical systems’ innovations for ventilation, cooling and heating, Gordon’s courthouse buildings exploits natural ventilation as a strategy for achieving buildings’ passive cooling, in the hot and humid climate areas of the Texas state, in a design process that evolved over time to become more technologically sophisticated and climatically efficient. This research investigates the design and construction features and climatic response strategies of Gordon’s different types of court houses, specifically examines and assesses their natural ventilation effects. This study discusses the climate-responsive approach, moving from already established models to the creation of new climate responsive typologies of ventilation chimneys through a process of typological metamorphosis.
Basic Biological Aspects of Dormitator maculatus “Naca” (Bloch, 1792) from the Alvarado Lagoon in Veracruz, Mexico
Authors: Camacho Claudia Araceli Dávila , Galaviz-Villa Itzel 
Published: March 2021

Abstract

D. maculatus is an artisanal fishing resource of great economic and gastronomic importance in the area, although its annual availability is erratic due to the deterioration and contamination of its habitat, in addition to poor management of its fishery; the latter because it is easily captured during its breeding season. Basic biological aspects of D. maculatus were estimated, such as size composition, sex ratio, and type of growth. A total of 700 organisms, 364 males and 336 females, were collected and analyzed during 12 continuous months. As a result, sizes between 4.4 to 17.0 cm were obtained, averaging 10.2 cm. The most common length range in females was 8.1 - 9.0 cm and 9.1-10.0 cm in males. The annual sex ratio was 1M: 0.87F; with significant differences from July to October (2M:1F) and January (1M:2F). It was observed that the species tends to form aggregations, however, it maintains a 1M:1F ratio in the remaining period. The length-weight relationship parameters show that D. maculatus presents positive allometric growth (r2 = 0.93452) for both sexes. Males were slightly larger and heavier than females. The minimum size of sexual maturity obtained was Lm50 = 8.21 and 8.41 cm for females and males, respectively.
Research on the Economic Growth for Under-Developed Counties -- Based on Two-way Fixed-effects Model
Authors: Li Zhengze , Huang Zibo , Zhang Yongcheng , Huang Zili 
Published: March 2021

Abstract
The county economy, especially the problem of poor counties, is currently a hot issue in China. At present, the research on the key factors for county economy is scarce, partly because it is difficult to obtain accurate and sufficient data. Because power consumption and industrial level are often highly correlated, and the power consumption is real-time data and hard to falsify, this paper used spatial, electricity consumption and economic data of 66 Chinese counties, which contains 29 poor counties, from 2009 to 2016 to find out the key factors for under-developed counties’ economic growth by applying fixed effect regression model and machine learning models. The result shows that for poor counties, though the 1st industry is still the fundamental industry for county-level economy, the development of 3rd industry has significant positive impact on local economy. However, the development of 2nd industry, including recruiting large companies, and the input of electricity resources cannot well drive the local economies, which may suffer great loss due to the elimination policy of overcapacity in recent years. And the machine learning results support the above conclusions and suggest an obvious geographical cluster of poor counties, and the location, development of 1st and 3rd industry and net income of rural residents can explain most difference between the poor and non-poverty counties. These conclusions can be helpful for the government to lead the poor counties to get rid of poverty, and the cluster of poor counties should be focused.
Optimized Stress-Strain Ranges for Hyperelastic Constitutive Models Supporting the Simulation of Vertical Stiffness on Airless Tire
Authors: Phromjan J , Suvanjumrat C 
Published: March 2021

Abstract
The airless tires are developed to overcome a disadvantage of pneumatic tire which lost maneuverability caused of flattening and blasting. The finite element analysis (FEA) is an effective method for development of airless tires which have a complex construction. The material properties which describe mechanical behavior of each tire component are very important to yield accurate result. The high order constitutive model usually obtains the accuracy of FEA results. Unfortunately, it consumes the simulating time. The suitable stress-strain range of Mooney-Rivlin and Ogden model was selected in this research. The vertical stiffness of airless tire model was compared to the experiment. This study found that the accurate result and consuming less time of TWEEL airless tire model depended on an appropriate pair of material properties. There were 100% of tread and 30% of spoke stress-strain characteristic based on the Mooney-Rivlin model. Consequently, the study and design of airless tire by finite element method will be carried out efficiently in the further works.