bluuebunny/crossref_metadata_2025_split huggingface dataset:
Environmental conditions of the landscape functioning in the Pribaikalskii National Park: historical perspective
Authors: Atutova Zh V , Li Zehong 
Published: November 2021

Abstract
The history of the economic development of the valley complexes of the Goloustnaya River basin is considered. Forestry and agricultural activities are designated as the main activities developed by the local population. Fluctuation changes in the intensity of their implementation are highlighted, specifically. the slowly developing process of economic development of valley landscapes due to low population in the second half o f the 17th century and until the first half of the 20th century; expansion of agricultural land and growth of industrial development of forest resources, starting from the middle of the 20th century until the end of the 1980s; and a decrease in economic activities since the end of the last century, which is connected both with the state reorganization of the country’s economy and with creation of specially protected natural territories within the studied area. The valley complexes of the Goloustnaya River are at risk from the recreational development of coastal areas of Lake Baikal that have been actively developing in recent years. Taiga landscapes of the upper and middle reaches of the river are at risk of spreading forest fires. Negative consequences from economic activities have been contributing to a significant anthropogenic transformation of landscapes of the Pribaikalskii National Park for a long period.
Assessment of soil contamination using remote sensing data in the Tamsag-Bulag oil field, Mongolia
Authors: Gantumur S , Kharitonova G V , Stepanov A S , Dubrovin K N 
Published: November 2021

Abstract
Although field surveus represent an essential method for determining oil contamination of soils and soil cover, the use of remote sensing techniques has become one of the main trends over recent years due to their economic and temporary advantages. The fundamental basis of this approach is the assessment of changes in vegetation cover by vegetation indices as indicator. In this study, the problems of assessment of the soil cover contamination during oil production are considered. It is aimed to select and evaluate objective criteria for soil cover contamination with oil in the Tamsag–Bulag field (Eastern Gobi, Mongolia). For this purpose, during the period of maximum vegetation growth, various vegetation indices were investigated at test sites (4 km2) from 2015 to 2019. The Normalized Difference Vegetation Index (NDVI) and Soil Adjusted Vegetation Index (SAVI) were used with Sentinel-2 and MODIS of the Terra satellite images at 30 and 250 m resolution, respectively. The monitoring of the land quality with satellite images via NDVI and SAVI allows us to assess the area of oil contamination of the soils and soil cover. The significant increase in the values of the NDVI and SAVI at a distance of more than 4 km from the center of the Tamsag-Bulag oil field is shown. The obtained results indicate the possibility of assessment and monitoring the state of the oil-ed territories of the Eastern Gobi by NDVI и SAVI using satellite images.
Species composition of mosses of wetland ecosystems of the Bolonsky Reserve
Authors: Kuptsova V A 
Published: November 2021

Abstract
This paper presents the data on the moss species diversity in wetlands of the Bolonsky State Nature Reserve. The spectrum includes 45 species from 18 genera, 15 families and 5 orders belonging to Polytrichopsida, Bryopsida and Sphagnopsida classes. The Polytrichopsida class includes 3 species, Bryopsida - 19 species and Sphagnopsida - 23 species. The most numerous in species composition was the Sphagnaceae family.
The larch forest of the “Bastak” State Nature Reserve (Jewish autonomous region)
Authors: Lonkina E S , Rubtsova T A , Gorelov V A 
Published: November 2021

Abstract
The article presents the information about the current state of the larch forests of the “Bastak”. State Nature Reserve The area, ecological and cenotic conditions of growth are determined, the classification of the studied plant communities is presented, a brief description of the forest structure is given. The current state of the larch forests of the “Bastak” State Nature Reserve can be assessed as fairly stable. Currently, larch forests occupy within 25 % of the forested area. The most widespread area is occupied by lowland larch forests (94 %). Mountain larch forests are derived plant communities formed after forest cutting in fir-spruce forests.
The ecological tourism in the islands of Peter the Great Bay (Sea of Japan)
Authors: Mayorova L A , Varchenko L I 
Published: November 2021

Abstract
The article considers the objects and main types of ecological tourism on the islands of Peter the Great Bay (Sea of Japan). The accelerated pace of socio-economic development in the Primorsky Krai, its strengthening cooperation with the countries of the Asia-Pacific region (ATR), the annual holding of economic summits in Vladivostok make the tourism industry a promising path of the economic development. The Primorsky Krai is a leader in the development of tourism and recreation in the Far East. Ecological tourism is a journey through nature. The main types of ecological tourism are scientific, educational and recreational ones. A trip to nature should be combined with respect for the latter, the study, protection, and restoration of unique landscapes. Ecological tours are offered to vacationers as an alternative to traditional long-distance travels to foreign countries. The Peter the Great Bay is the largest bay in the Sea of Japan at the coast of Russia. The large and small islands of the bay, the island territories of Vladivostok (Russkiy, Popova and Reineke) and the adjacent waters of the Sea of Japan are natural complexes with a unique nature and favorable climate. Sandy beaches and amazingly beautiful shores, convenient bays and inlets, are good objects for the development of various types of ecological tourism.
Vitality structure of Acer negundo populations in an urban environment
Authors: Yu Morozova G 
Published: November 2021

Abstract
The results of a comparative analysis of the vitality structure of Acer negundo populations during ontogenetic development in an urban environment are presented. The vitality structure of A. negundo populations is changing from prosperous to depressive, with the changing living condition of individuals and the quality of populations in urban conditions. The quality index of A negundo populations was in the amplitude from 0.5 to 0.166 along the urbanization gradient. High plasticity and variability of A negundo in combination with the dynamic vitality structure on the background of anthropogenic impacts provide active colonization of this invasive species in the city.
State of Cenopopulations of Trommsdorffia ciliata (Thunb.) H.S. Pak (Asteraceae) in the Plant Communities of the Lower Reaches of the Ussuri River
Authors: Motorykina T N 
Published: November 2021

Abstract
The paper presents the results of studying the structure and state of four cenopopulations of the rare species Trommsdorffia ciliata (Thunb.) H.S. Pak in the valley of the lower reaches of the Ussuri River. The density of the studied cenopopulations is from 8 to 27 ind./m2. All studied cenopopulations are normal and incomplete. The absence or small number of juveniles in the ontogenetic spectrum of the studied cenopopulations is associated with a high projective cover of the herbaceous layer, which prevents the survival of this age group. According to the absolute maximum of ontogenetic groups of adult plants of all cenopopulations, Trommsdorffia ciliata are classified as young normal ones, where the maximum falls on individuals of the virginal state. An evaluation of population and organismic signs of the state of the studied cenopopulations showed that the most favorable conditions for the growth of Trommsdorffia ciliata are formed in a moist sedge-grass-herb meadow in the vicinity of Lonchakovo village. The measures for the protection of Trommsdorffia ciliata that are to include in the Red Book of the Khabarovsk krai (2019), to inhabit in a protected area and are to control the state of the known population of this species have been cited.
International key ornithological areas of the Khabarovsk Territory
Authors: Pronkevich V V 
Published: November 2021

Abstract
A list of key areas of the Khabarovsk Territory, which are of international importance for the conservation of bird populations, is provided on the basis of our own data and academic sources. A brief description of the ornithological significance and the conservation status of 19 areas are presented. The major factors determining the formation of increased densities of breeding birds and mass gatherings of migrants are considered. Twelve species are used as identifiers for International Key Bird Areas. They are represented by the following families: Phalacrocoracidae (1 species), Anatidae (2), Accipitridae (1), Scolopacidae (1), Laridae (1), and Alcidae (6). Among the 19 areas important for birds, 7 areas have a conservation status. Other areas either do not have a protected status, or it covers only a part of important habitats. Information is provided on the prospects for the organization of protected areas in some sea bays of the Sea of Okhotsk.
Spatial distinction analysis on marine ranch development potential in coastal areas of China
Authors: Xu Sh , Gao Y , Li F , Cheng H , Liu Q 
Published: November 2021

Abstract
According to the 14th Five-Year Plan and the outline of 2035 long-term goals, a modern marine industrial system should be built, the layout of green offshore aquaculture should be optimized, and marine ranching should be built. The research on the construction of marine ranching can provide new ideas for sustainable ecological fishery and inject new vitality into the development of marine industry. In the future, the construction of marine ranching will be a vast world. In this paper, from the perspective of geography, the GC-TOPSIS method combined with the entropy weight TOPSIS method and the grey correlation method were used to construct 22 evaluation index systems to estimate the development potential of marine ranching construction in ten coastal provinces and municipalities of China from 2011 to 2016. The results showed that the overall development potential of marine ranching in ten provinces and urban areas had regional differences (north, central and south), and the differences in the north and south regions were obvious. The regional differences in the central coastal areas of China were not significant, and the development potentials of marine ranching in ten provinces and urban areas were all medium. The development potential of four criteria layers of marine ranching in ten coastal provinces and regions of China is different in space, and the development potential of marine ranching in the same region is unbalanced in all aspects of the criteria layers. To estimate the development potential of marine ranching in China’s ten coastal provinces and regions provides scientific support for the sustainable development of ecological fisheries, and has practical application value for the scientific planning of marine ranching and the selection of demonstration areas.
Experimental investigation and parameters optimization on jet electrochemical machining to improve the surface performance of additive-manufactured 316L stainless steel parts
Authors: Cheng Haixia , Lou Guibin , Shen Lida , Zhang Ming , Yang Youwen , Xie Deqiao , Chen Ya , Bai Huawen , Tian Zongjun , Zhao Jianfeng 
Published: November 2021

Abstract
For metal parts, selective laser melting (SLM) technology has obvious advantages over traditional forming methods. Parts manufactured by selective laser melting are abbreviated as SLMed Parts. However, the surfaces of SLMed parts have many defects such as adhered particles and pores. These defects lead to poor surface quality of the parts, thus restricting the promotion of SLM technology. Therefore, the paper uses jet electrochemical machining (JECM) to remove the surface defects of SLMed sample. Optimization is technique used in manufacturing sectors to generate the best manufacturing conditions. There are many process variables involved in the JECM process, and it is difficult to select an appropriate parameters combination to maximize the removal of surface defects while minimizing material removal thickness and surface roughness. The purpose of this work is to study the influence of process parameters such as electrolyte temperature, processing time, and current density on material removal thickness, surface roughness and material removal rate in the JECM process. In Minitab19, the L25 made by Taguchi orthogonal array was used in the experiment. Each experiment is carried out under different input parameters, and the data were analyzed through analysis of variance (ANOVA). The optimized processing parameters associated with performance parameters are given and ultimately the experimental results were verified.
Differentiation between normal and tumor mammary glands with depth-resolved attenuation coefficient from optical coherence tomography
Authors: Maciel Marino J , Pereira Hugo M , Pimenta Sara , Miranda Alice , Nunes-Pereira Eduardo J , Correia José H 
Published: November 2021

Abstract
Optical coherence tomography (OCT) is a well-established imaging technology for high-resolution, cross-sectional imaging of biological tissues. Imaging processing and light attenuation coefficient estimation allows to further improve the OCT diagnostic capability. In this paper we use a commercial OCT system, Telesto II-1325LR from Thorlabs, and demonstrate its ability to differentiate normal and tumor mammary mouse glands with the OCT attenuation coefficient. Using several OCT images of normal and tumor mammary mouse glands (n = 26), a statistical analysis was performed. The attenuation coefficient was calculated in depth, considering a slope of 0.5 mm. The normal glands present a median attenuation coefficient of 0.403 mm−1, comparatively to 0.561 mm−1 obtained for tumor mammary glands. This translates in an attenuation coefficient approximately 39% higher for tumor mammary glands when compared to normal mammary glands. The OCT attenuation coefficient estimation eliminates the subjective analysis provided by direct visualization of the OCT images.
Design of improved compact decoupler based on adjustable capacitor for EAST-ICRF antenna
Authors: CHEN Gen , MAO Yuzhou , YUAN Shuai , ZHAO Yanping , YANG Hua , ZHANG Xinjun , QIN Chengming , CHENG Yan , WANG Yongsheng 
Published: November 2021

Abstract
The Ion Cyclotron Radio Frequency (ICRF) heating antenna on EAST adopts a decoupling device to constrain power coupling among the radiation straps, which was discovered shortcomings such as long size, poor contact, and etc. In order to improve these weak points, a new type decoupler with terminal-loaded tunable capacitor is designed to replace the previous design. Besides the capability of the tunable admittance parameters of decoupler, the withstand voltage of the capacitor is the most significant consideration for working under high power. Therefore, the theoretical analysis carefully elaborates the capacitor withstand voltage, and the detailed analytical equations and criteria for design are given. After the comparative analysis of theoretical calculation and 3D simulation results, the decoupler design scheme is finalized. The capacitor-loaded decoupler has been successfully adopted for ICRF antenna at port N on EAST, and achieved the optimization of adjacent port isolation from −22 to −58 dB at 37 MHz without plasma to restrict mutual coupling. The new design of the decoupler has greatly improved its compactness and automatic adjustment performance, and could be good solution for the decoupling network of ICRF antennas.
Enhanced discrimination of high-dimensional quantum states by concatenated optimal measurement strategies
Authors: Solís-Prosser M A , Jiménez O , Delgado A , Neves L 
Published: November 2021

Abstract
The impossibility of deterministic and error-free discrimination among nonorthogonal quantum states lies at the core of quantum theory and constitutes a primitive for secure quantum communication. Demanding determinism leads to errors, while demanding certainty leads to some inconclusiveness. One of the most fundamental strategies developed for this task is the optimal unambiguous measurement. It encompasses conclusive results, which allow for error-free state retrodictions with the maximum success probability, and inconclusive results, which are discarded for not allowing perfect identifications. Interestingly, in high-dimensional Hilbert spaces the inconclusive results may contain valuable information about the input states. Here, we theoretically describe and experimentally demonstrate the discrimination of nonorthogonal states from both conclusive and inconclusive results in the optimal unambiguous strategy, by concatenating a minimum-error measurement at its inconclusive space. Our implementation comprises four- and nine-dimensional spatially encoded photonic states. By accessing the inconclusive space to retrieve the information that is wasted in the conventional protocol, we achieve significant increases of up to a factor of 2.07 and 3.73, respectively, in the overall probabilities of correct retrodictions. The concept of concatenated optimal measurements demonstrated here can be extended to other strategies and will enable one to explore the full potential of high-dimensional nonorthogonal states for quantum communication with larger alphabets.
Analyzing the impacts of land use policies on selected ecosystem services in the upper Chattahoochee Watershed, Georgia, United States
Authors: Benez-Secanho Fabio Jose , Dwivedi Puneet 
Published: November 2021

Abstract
The rapid rate of urbanization within the Upper Chattahoochee Watershed (UCW) is threatening the provision of ecosystem services (ESs) for six million residents of the Atlanta Metropolitan Area. This study uses the land cover change model TerrSet to project future land cover from 2016 to 2040. The modular toolset InVEST (Integrated Valuation of Ecosystem Services and Tradeoffs) is used to assess the efficacy of four land use policies in maintaining the provision of three ESs (carbon storage, wildlife habitat, and water quality) within the UCW. The Baseline scenario represents past urbanization trends, whereas the Urbanization scenario accounts for a higher urban growth rate. The Plan 2040 scenario includes existing policy guidelines, and the Conservation scenario adds forested riparian buffer areas. Two integrated indexes and an economic valuation of ESs were used to combine all ESs and analyze the overall performance of each policy. The first index uses unequal weights for ESs based on the Analytical Hierarchical Process, whereas the second index uses equal weights. The values of both integrated indexes and economic values were highest in the Conservation scenario and lowest in the Urbanization scenario. No significant differences in the provision of ESs were found between the Baseline and the Plan 2040 scenarios. However, the integrated indexes and economic values for both land use policies declined over time. Our study will feed into the ongoing movement of sustainable watershed management for ensuring the provision of ESs, especially for rapidly urbanizing cities worldwide, in general, and in the United States, in particular.
Increasing spring dust storms in the future over the Taklimakan Desert, Northwest China: implications from changes in circulation pattern frequency in CMIP6
Authors: Mao Rui , Gong Dao-Yi , Kim Seong-Joong , Zong Qi , Feng Xingya , Zhang Xiao-Xiao 
Published: November 2021

Abstract
Dust storms over the Taklimakan Desert (TD), Northwest China, not only influence human health but also affect regional climate through direct effects of dust aerosols on solar and longwave radiation. The Coupled Model Intercomparisons Project Phase 5 (CMIP5) models project a decrease in dust storms because of a decrease in dust emissions over the TD in the future under warming scenarios. However, inaccurate simulations of dust emissions cause the CMIP5 models to simulate dust storms poorly. Here we analyzed typical circulation patterns that initiate dust storms over the TD and examined changes in the frequency of typical circulation patterns derived from the CMIP6 models in an extreme warming scenario. The results show that there will be an increase in typical circulation pattern frequency in the latter half of the 21st century compared with 1958–2014, implying an increase in dust storms over the TD in the future under the extreme warming scenario. The increase in dust storms over the TD may be related to an increase in synoptic activities in the future from the Middle Asia to the TD, which is caused by a southern movement of subtropical westerly jet stream under the extreme warming scenario.
Nanosecond laser shock detonation of nanodiamonds: from laser-matter interaction to graphite-to-diamond phase transition
Authors: Zhang Xing , Sun Haofan , Mao Bo , Dai Rui , Zhuang Houlong , Liao Yiliang , Nian Qiong 
Published: November 2021

Abstract
Nanodiamonds (NDs) have been widely explored for applications in drug delivery, optical bioimaging, sensors, quantum computing, and others. Room-temperature nanomanufacturing of NDs in open air using confined laser shock detonation (CLSD) emerges as a novel manufacturing strategy for ND fabrication. However, the fundamental process mechanism remains unclear. This work investigates the underlying mechanisms responsible for nanomanufacturing of NDs during CLSD with a focus on the laser-matter interaction, the role of the confining effect, and the graphite-to-diamond transition. Specifically, a first-principles model is integrated with a molecular dynamics simulation to describe the laser-induced thermo-hydrodynamic phenomena and the graphite-to-diamond phase transition during CLSD. The simulation results elucidate the confining effect in determining the material’s responses to laser irradiation in terms of the temporal and spatial evolutions of temperature, pressure, electron number density, and particle velocity. The integrated model demonstrates the capability of predicting the laser energy threshold for ND synthesis and the efficiency of ND nucleation under varying processing parameters. This research will provide significant insights into CLSD and advance this nanomanufacturing strategy for the fabrication of NDs and other high-temperature-high-pressure synthesized nanomaterials towards extensive applications.