bluuebunny/crossref_metadata_2025_split huggingface dataset:
Building Banyuasin Village, Bangka Regency as green and agro-tourism village that sustainable using information technology
Authors: Putra G B , Arkan F , Atmaja E J J 
Published: November 2020

Abstract
Tourism is currently one of the state’s income to support the economy. Therefore, almost all countries develop their regions so that they can become destinations for tourists. Indonesia is one of the countries that encourages and supports the development of tourism to the village, so that each village designs so that its village can become a tourist destination. Now, every village in Indonesia have been race to developing their village into green and tourism village in order to improve the welfare of the village. Banyuasin village is one of the villages in Bangka Regency which has agro-tourism potential because of many agricultural and plantation potentials that can be used as agro-tourism destinations and also development to become an environment-based village. Banyuasin village also has a plan to become a green village by doing good waste and waste management by using information technology. To support Banyuasin village plan for achieve the goal, the use of information technology and building an information system that helps to develop the Banyuasin village in the future. This information system will design and process data related to the potential of Banyuasin village to become a Green and Agro-tourism village as well as to process the data to help Banyuasin Village.
Geographical indication protection for pepper: its environmental implications for Bangka Belitung Islands
Authors: Darwance  , Haryadi D , Yokotani  
Published: November 2020

Abstract
Products with geographical indication have massive potential to be a nation’s flagship commodities in local and international trades. It could be caused for specific reputation, superior quality, specific characters due to geographical environment factors (nature, humans, and combination both of them). Therefore, it is a great importance to provide special protection for goods or products that fall into the GI category. A flagship’ commodity from Bangka Belitung Islands, white pepper is a registered geographical indication with the name of Lada Putih Muntok (Muntok White Pepper). This brand name was created by Bangka Belitung Islands Province’s Pepper Management, Development, and Marketing Agency (BP3L). A legal protection by using a flagship commodity has a flagship commodity, this protection effort has a tremendous role in environmental preservation. Through this normative paper, this study attempts to convey the nature of geographical indication, the substance of the existing regulations, and their relation to environmental preservation, especially the relation between the geographical indication of pepper and the environment of Bangka Belitung Islands Province. This qualitative study employed literature review for data collection, with statutory rules and regulations as the primary data. Two approaches used were statute approach and conceptual approach. From the result of the research found that there is a relationship between geographical indications and environmental factor, including Lada Putih Muntok. With the approval of a geographical indication, there is obligation that must be carried out by the government and the community, namely maintaining reputation. One way to maintain reputation is to maintain the quality of the environment in the area.
Study on the reasonable tilt angle of ventilation shafts in Xidianwan Tunnel, China
Authors: Xue Dapeng , Zheng Guoping , Guo Hongyu , Chen Jiongke , Zhuang Yizhou 
Published: November 2020

Abstract
The “asthma effect” of shaft natural ventilation is common, which makes the actual air exchange volume impossible to be quantified and the pollutant concentration along the tunnel unable to be analyzed. In order to improve the ventilation effect of the ventilation shaft and realize the steady air flow in the air well, the reasonable tilt angle of the ventilation shaft is studied. Firstly, the numerical simulation software FLUENT is used to establish a tunnel model of a certain traffic volume based on dynamic grid technology, and to analyze the relationship between the shaft tilt angle and the air flow state, including intake and exhaust air volume, and air flow direction. Secondly, model experiments are carried out to verify the numerical simulation results, in which jet fan thrust pressure is substituted for traffic piston pressure. The result shows that the natural ventilation state with the proposed direction can be realized on condition that the shaft tilt angle is around 15 degrees. That means to discharge polluted air from one group of ventilation shafts and suck in fresh air from the other group of ventilation shafts. At the same time, by dividing the tunnel rationally, the calculation formula of pollutant concentration of the cross section along the tunnel under the condition of different diverging amounts caused by the change of tilt angle of the ventilation shafts is derived, which provides guidance and reference for determining whether the air quality in the tunnel meets the requirements of relevant specifications.
Status and risk evaluation of heavy metals in soil and traditional Chinese medicine in Longxi, Gansu Province, China
Authors: Wen Hong , Wang Hexiong , Yuan Longmiao , Jiang Yufeng 
Published: November 2020

Abstract
In order to study the pollution status of traditional Chinese medicine and soil heavy metal elements in Longxi, Gansu province, the content and pollution status of heavy metal elements in traditional Chinese medicine and its planting soil were evaluated by the method of field investigation and indoor analysis. The results showed that the total amount of Cd, Pb, Cu, Zn and Cr exceeded the soil background value in varying degrees, and the over standard rates were 100%, 100%, 100%, 67% and 33% respectively. The enrichment capacity of Codonopsis pilosula was Cr > Zn > Cd > Cu > Pb, Astragalus membranaceus was Zn > Cd > Cu > Pb > Cr, Scutellaria baicalensis was Zn > Cd > Pb > Cu > Cr. Health risk assessment shows that traditional Chinese medicine in the study area will not cause obvious harm to resident health.
Source analysis of heavy metals in topsoil and water in arid area: a case study in northwest China
Authors: Chen Hongwei , Zhao Lue , Huang Haitao , Peng Xiangxun , Zheng Yangqi 
Published: November 2020

Abstract
To understand the origin of metals in the topsoil, surface and ground water in arid area, field investigation and statistics were used in a chromium contaminated site in northwest China. The strong positive correlations among the soil EC, salinity and pH are attributed to the extensive evaporation and leaching of the chromite, lignite, limestone and dolomite. The scarce precipitation is responsible for the accumulation of metals in the topsoil. The soil salinization influences the metal mobility. Cr, Fe, Ni, As, Hg, V and Sb in the topsoil correlate with the chromite and lignite. Se, Cu, Co and Zn are mainly from geologic origin. The increase of As, Cr, Fe, Hg and Ni in the artificial channel reveals the influence of the soil leaching and groundwater discharge. The high content of Ca2+, Mg2+, Cl−, SO4
2- and HCO3
− in the groundwater is resulted from the arid climate, artificial channel, limestone, dolomite and lignite. Cr, Fe, Ni and Hg in the groundwater primarily derive from the chromite and lignite, and Cd, Mn and Pb may be from the strata. Therefore, the factory synchronously makes the soil metals, EC, salinity and pH increase, and the salinization conversely influences the fate and transport of the metals.
Influence of tunnel lighting system installation modes and parameters on energy saving
Authors: Zheng G P , Tian W , Sun Y 
Published: November 2020

Abstract
In order to quantitatively analyze the influence of the installation mode as well as the parameters of luminaires on energy saving for tunnel lighting, particularly in regard to the installation angle, a point-by-point method was adopted so as to calculate illuminance and luminance, and a simulation analysis software was developed. The illuminance and luminance obtained by symmetrical, staggered and unilateral modes, as well as pro-beam and anti-beam configurations and different installation parameters, were quantitatively studied to evaluate effects on energy-saving. The obtained results demonstrated that the installation angle of the luminaires directly affected light efficiency when the luminaires were mounted symmetrically on both sides. Moreover, no significant difference in the quality indexes between the staggered arrangement and symmetrical arrangement were present. The illumination of the road surface was only 76% of that of the symmetrical arrangement when the luminaires were installed unilaterally. In addition, the luminance on the road surface was about 33% higher than that of the symmetrical configuration when the anti-beam configuration was adopted. The analytical conclusions attained by this study may encourage lighting designers to pay more attention to the installation parameters of luminaires and carry out on-site installation guidance.
Study on chemical speciation of phosphorus in the desert particles of western Inner Mongolia
Authors: Peng Yuheng , Yang Hongwei 
Published: November 2020

Abstract
The five speciation of phosphorus in the desert particles (<63 μm) of western Inner Mongolia was analyzed by sequential extraction method (SEDEX). The five speciation of phosphorus is exchangeable phosphorus (Pex), ferric iron-bound phosphorus (PFe), authigenic carbonate fluoroapatite and CaCO3 associated phosphorus (Pau), detrital apatite phosphorus (Pdet) and organic phosphorus (Porg), respectively. The results show that Pau is the main phosphorus in desert particles of western Inner Mongolia, the content of Pau in particles with natural particle size is 150-1840 mg·kg−1. The content of Pau is inversely proportional to the particle size of particles, the smaller the particle size is, and the higher the content is. Secondly, the content of Pdet was 8-480 mg·kg−1. The sum of the other two speciation of P (Pex, PFe) more easily used by living beings is 20-45 mg·kg−1, which accounts for 0.27%-8.51% of TP. Comparison of two kinds of granularity, the sequence of TP content was GanSu-Linze > Badain Jaran (Alashom youqi) > Badain Jaran (Shanga nwoer) > Wu Lan Bohe Desert (Baying-gaule) > Tengger (Azuoqi) > Badain Jaran (Batong-brige). As the source of sandstorm, particles less than 63 μm are easy to form flying dust at high altitude, floating across the eastern sea area of China to the Pacific Ocean, and transporting phosphorus over a remote distance.
Numerical simulation and cause analysis for a severe mixed pollution of smog and haze in the Pearl River Delta in Winter
Authors: Peng Duan , Du Yaodong , Fan Qi , Liu Chang , Zhang Yu , Chen Xiaoyang , Shen Chong 
Published: November 2020

Abstract
Based on the simulation results of the Weather Research and Forecasting-Community Multiscale Air Quality (WRF-CMAQ), the meteorological elements, boundary layer characteristics and temporal and spatial distribution characteristics of particulate matter during the heavy haze-dense fog-haze pollution process from 1 to 12 January 2017 were analyzed with the aid of the data from conventional meteorological observation and environmental monitoring station. Also, the causes of this pollution have been presented considering the terrain effects. The results show that, during the first process (day 1 to day 3), the upwind transports pollutants to Shaoguan, Qingyuan and other provinces, and the local surface wind velocity is lower than 3 m·s−1, which increased concentration of pollutants in the Pearl River Delta region and formed moderate smog and haze pollution. During the second process (day 4 to day 6), the average surface wind speed is lower, and the static wind is lower than 2 m·s−1 with the influence of terrain effect (even lasted for 5-16 hours). Besides, the influence of the strong convergence field of small wind increases the accumulation and convergence of pollutants on the ground, and simultaneously, the thickness of the ground inversion layer is further intensified and the height of the boundary layer is as low as 100 meters. At the same time, the relative humidity increases to nearly 100%, resulting in continuous visibility of fewer than 500 meters for 10 hours. Additionally, it was found that on the day of heavy pollution in Guangzhou, the main source is coarse nuclear particles, and the corresponding actual situation is that the concentration of NO2 was higher than that in other places, which reflects the influence of high concentration of human activities on air pollution. As the northeasterly winds continued to strengthen, pollutants across the region continued to be transported to the Pearl River Delta. Through the convergence of wind farms in Zhaoqing, Foshan, and Guangzhou, cross-regional pollutants and local pollutants emitted by the Pearl River Delta are again accumulated in the pearl river delta central area, forming a third moderate haze pollution process. It is concluded that the influence of strong convergence field of small wind under 2 m·s−1 (even 5-16 hours static wind), the increase of ground temperature inversion, the height of boundary layer as low as 100 m, the increase of near-ground humidity are superposed, and the combined effect of topography are the main meteorological causes of mixed pollution of fog and haze in the Pearl River Delta in winter.
Determination of median lethal concentration of two common heavy metal pollutants in rivers, potassium chromate and cadmium nitrate, to red zebrafish and their mortality causes
Authors: Liu Yipeng , He Zhonghao , Ye Jiyang , Zheng Yan , Huang Ziqi , Yan Yibo 
Published: November 2020

Abstract
In order to investigate the toxicological properties of river pollutants, potassium chromate (K2CrO4) and cadmium nitrate tetrahydrate (Cd (NO3)2·4H2O) were selected as they are commonly discharged from industry to nearby rivers. This paper studied the Median Lethal Concentration (LC50) of the pollutants to the adult red zebrafish by acute toxicity experiments within 96 hours. 120mg/L, 130mg/L, 140mg/L, 150mg/L, 160mg/L, 170mg/L potassium chromate solutions and 16mg/L, 20mg/L, 24mg/L, 28mg/L 32mg/L, 36mg/L cadmium nitrate tetrahydrate solutions were prepared with triplicates to determine the LC50. The results of the preliminary experiments and the calibration curves suggested that the LC50 of potassium chromate and cadmium nitrate tetrahydrate were 165 mg/L and 28 mg/L respectively. The toxicity of thresholds and LC100 were also evaluated. Through the observations of the tested subjects in morphological, ethological and anatomical manners, behavioural alterations, oxidative stress, and immunotoxicity were probably their major causes of death.
Effect of desert photovoltaic on sand prevention and control—taking Gansu Gulang Zhenfa photovoltaic DC field as an example
Authors: Chang Zhaofeng , Liu Shizen , Fu Jing , Wang Qi , Wang Fei , Sun Tao , Liu Shujuan , Wang Fanglin 
Published: November 2020

Abstract
In recent years, the photovoltaic industry in desert and Gobi has developed rapidly. In order to reveal the effect of photovoltaic industry on sand prevention and control, this study was performed by taking GuLang Zhenfa photovoltaic DC field on the southern edge of Tengger Desert as an example. Through continuous observation of air temperature, wind speed and air pressure inside and outside the photovoltaic field, combined with the investigation of vegetation inside and outside the photovoltaic field in desert and Gobi of the central and eastern part of Hexi Corridor, this study analyzed the ecological effect of photovoltaic industry on sand prevention and control from three aspects: the balance of surface heat by the transformation of solar radiation of desert photovoltaic, the function of wind barriers and sand barriers of the photovoltaic DC field, and the effect of the photovoltaic DC field on vegetation. The results showed that the photovoltaic DC field in desert and Gobi had very significant ecological functions for desert prevention and control, and the ecological functions were mainly as follows: 1) the photovoltaic DC field could effectively transform solar radiation, adjust the thermal balance of the desert, and weaken the power (i.e., the gale) for the occurrence and development of sandstorms and sand flow; 2) the photovoltaic panel had a strong function of wind barriers, and its function of wind-proof and sand-fixing were several times that of sand barriers; 3) the rain-collecting effect of photovoltaic panel could promote the growth of plants. The development of photovoltaic industry in desert and Gobi not only has remarkable economic benefits, but also has the ecological function of sand prevention and control. China has a vast area of desert and Gobi, and there are broad prospects for the development of desert and Gobi photovoltaic industry. The photovoltaic industry in desert and Gobi is expected to become the third new way of sand prevention and control after afforestation and desertification control and sand fixation by sand barriers.
Characteristics of heavy metals in surface water and assessment of water environment quality in the upper reaches of the Yellow River in recent 10 years
Authors: Cheng Huibo , Yang Fan 
Published: November 2020

Abstract
With the rapid development of economy, the load-bearing pressure of ecological environment is increasing, and human activities have brought tremendous challenges to surface water. In this paper, the surface water of 17 cities and counties in the upstream watershed of the reservoir in the source area of the Yellow River was taken as the research object. Based on the monitoring of the surface water quality section of the ecological transfer payment work in the national key ecological functional areas, surface water samples were collected quarterly from 2009 to 2018. Six heavy metal elements (cadmium, mercury, hexavalent chromium, lead, arsenic and copper) in surface water were analyzed in laboratory, and ArcGIS Kriging spatial interpolation method was used to study the spatial distribution characteristics of heavy metals in surface water in the upstream basin of the reservoir in the source area of the Yellow River. Meanwhile, the maximum membership degree method was used to evaluate the quality of water environment. The results showed that the spatial distribution of cadmium, mercury, hexavalent chromium, lead, arsenic and copper in the upstream of the reservoir in the source area of the Yellow River presented a dynamic change, and the high value of cadmium concentration appeared in the northeastern region of the evaluation area as a whole, showing a planar and strip distribution characteristics; the concentration values of mercury in the southwestern region of Maqu County and Luqu County were the highest, and in each county of the northeastern region were relatively lower. In the past 10 years, the average concentration of heavy metals in lead was 0.004 27 mg/L, and that in mercury was 0.000 4 mg/L. According to the maximum membership principle, the environmental quality of heavy metals in surface water in the upstream basin of the reservoir in the source area of the Yellow River in recent 10 years was superior.
Regulation of risks with accounting for the possibility of terrorist attacks on critical infrastructure facilities
Authors: Dubinin E F , Kuksova V I 
Published: November 2020

Abstract
An important task of critical infrastructures is ensuring stable functioning of the objects of increased danger which are their part. For increase in safety of critical infrastructures and minimization of consequences from the possible emergency situations initiated by accidents and catastrophes needs to improve methods of assessment and regulation of risks connected with functioning of hazardous facilities, and especially critical facilities at various stages of their life cycle. For practical use the risk-based approach in regulation risks of functioning of critical facilities (CF) in the face of terrorist threats, it is necessary first of all to define the criteria and acceptable levels of risk. The article deals with the state of the system of risk regulation in the Russian Federation in the relevant subject area.
Route Optimization Methods for Response to Radiological Emergency Situations
Authors: Tashlykov O L , Sesekin A N , Shcheklein S E 
Published: November 2020

Abstract
The work actualizes the need for regional authorities to be ready to respond to possible radiological emergencies due to the ever-expanding use of radiation sources in various fields of activity (besides nuclear reactors) to ensure the safety of sustainable development of cities, territories and regions taking into account the human factor. Described are the developed routing optimization algorithms using mathematical modelling methods to minimize the radiological impact on emergency formations personnel while eliminating possible radiological emergencies. Presented are the results of computational experiments to assess the reduction of personnel exposure during route optimization of work in radiation-hazardous conditions. The recommendations on the use of the developed algorithms during the operation and decommissioning of nuclear facilities are formulated.
On the properties of the failure probability function in reliability analysis of constructions and structures with regulation of their stress-strain state
Authors: Sebeshev V G , Zhbanov A A , Shestakov A A 
Published: November 2020

Abstract
The properties and peculiarities of the failure probability function in dependence on the stress-strain state regulators in various (direct, inverse, optimization) problems of calculating the reliability of constructions and structures have been investigated and described. Predicting the possible changes in the probability of failure due to regulators’ varying, on the basis of the formulated signs, allows us to work out the algorithms for finding a rational and optimal regulation of the deformable system state parameters. The qualitative and quantitative illustrations of the identified properties of the failure probability function for multi-span beams with the nonlinear regulation of a bending moments are presented. The possibilities to reveal the areas of permissible values of regulators by the target reliability using a complex reliability indicator that takes into account the structure’s volume of material are shown.
Markov matrixes for random sequences imitation in fatigue testing and design in the problem of safety of steel structures
Authors: Gadolina I , Voronkov R , Bautin A , Serebrjakova I , Erpalov A 
Published: November 2020

Abstract
To guarantee the safety of steel structures it is important to deal properly with the problem of representation of exploitation loading. For metal fatigue testing and design, the proper choice of random (irregular) loading type is very important. The principles of random loading are discussed and some alternative approaches with their pros and cons are shortly reviewed in the paper. As a sound decision for random, but taking into account some specific features of the exploitation loading process, the target Markov method is proposed. According to this method, the important information of the real random processes in the form of the turning point is used for filling the square Markov matrix (analysis phase) and later on, with employing the random number generator, serves as a source for creating of the so-called replicas. The replicas are the random trial for numerical estimation of longevity scatter. Due to the fact, that all these manipulations are performed with the aim of metal fatigue investigation, some important processes’ characteristics for fatigue, like irregularity factor, fullness factor and machine part longevities were compared. Some important suggestion for the future development of this method, that is taking into consideration the sequence of the events, is discussed.