bluuebunny/crossref_metadata_2025_split huggingface dataset:
Smallholdings with high oil palm yield also support high bird species richness and diverse feeding guilds
Authors: Razak Syafiq A , Saadun Norzanalia , Azhar Badrul , Lindenmayer David B 
Published: July 2020

Abstract
Biodiversity has been devastated globally in the past hundred years, largely because of land conversion and agricultural intensification. Conversion of tropical forest to oil palm plantations is one of the greatest per unit area contributors to biodiversity loss in Southeast Asia. Concerned consumers, mainly from developed countries, have begun demanding sustainable palm oil in response to these issues. More ‘biodiversity-friendly’ oil palm production is also in demand, similar to that of other commodity crops (e.g. coffee, cacao). However, farming practices that improve biodiversity are thought to reduce yield, leading to increased pressure to clear more forest, resulting in further biodiversity loss. Here, we explore relationships between oil palm yield and avian biodiversity. To gather data on yields and agricultural inputs, we interviewed smallholders in Selangor, Peninsular Malaysia. We also quantified bird species richness, feeding guild diversity, abundance, and vegetation structure in smallholdings. We found that smallholdings with high yields were characterised by high species richness and feeding guild diversity, but low bird abundance. Our empirical results show the benefits to both yield and avian biodiversity of a wildlife-friendly strategy in smallholdings. We encourage the integration of farming practices with management that improves biodiversity to reconcile oil palm production and nature conservation.
The contribution of different aerosol types to direct radiative forcing over distinct environments of Pakistan inferred from the AERONET data
Authors: Khan Rehana , Kumar Kanike Raghavendra , Zhao Tianliang , Ali Gohar 
Published: July 2020

Abstract
To quantitatively estimate and analyze the contribution of different aerosol types to radiative forcing, we thoroughly investigated their optical and radiative properties using the Aerosol Robotic Network (AERONET) data (2007–2018) over an urban-industrial (Lahore) and coastal (Karachi) cities located in Pakistan. The contribution of inferred aerosol types following the threshold applied for FMF500 versus SSA440 and EANG440−870 versus AANG440−870 were found the highest for pure dust (PUD, 31.90%) followed by polluted continental (POC, 24.77%) types of aerosols, with moderate contribution was recorded for polluted dust (POD, 20.92%), organic carbon dominating (OCD, 11.85%), black carbon dominating (BCD, 8.77%) and the lowest for the non-absorbing (NOA, 1.79%) aerosol type. Seasonally, the mean (±SD) aerosol optical thickness at 440 nm (AOT440) was found maximum (0.73 ± 0.36) for PUD type in summer and minimum for BCD (0.25 ± 0.04) during spring at Karachi. However, the mean (±SD) AOT440 varied from 0.85 ± 0.25 during summer to 0.57 ± 0.30 in winter at Lahore, with the highest contributions for POC (29.91%) and BCD (22.58%) and the lowest for NOA (5.85%) type of aerosols. Further, the intensive optical properties showed significant temporal and spectral changes and the complexity of inferred aerosol types over the study sites. The results are well substantiated with the air mass analysis obtained from the concentration weighted trajectory (CWT) model for different aerosol types. The Santa Barbara DISORT Atmospheric Radiative Transfer (SBDART) model revealed the strong presence of BCD aerosol type led to a surface (BOA) and top of atmosphere (TOA) forcing of −70.12, −99.78 Wm−2 and −9.60, −19.74 Wm−2, with an annual heating rate of 2.10 and 2.54 Kday−1, respectively, at Karachi and Lahore sites.
Limiting food waste via grassroots initiatives as a potential for climate change mitigation: a systematic review
Authors: Mariam Nikravech , Valerie Kwan , Karin Dobernig , Angelika Wilhelm-Rechmann , Nina Langen 
Published: July 2020

Abstract
An estimated 30%–50% of food produced for human consumption is lost or wasted each year. These global food loss and waste (FLW) annually generate 4.4 Gt CO2-eq, or about 8% of total anthropogenic greenhouse gas (GHG) emissions, and thus present a still underestimated driver of climate change. To date, little is known about grassroots initiatives dedicated to reducing and preventing FLW and their actual potential to prevent FLW and thus contribution to mitigate GHG emissions. This paper presents a systematic review that examined the peer-reviewed evidence on grassroots initiatives’ potential to limit food waste and GHG emissions. We found 15 relevant studies which represent a small but recent and growing interest in the topic. The findings of the studies are mostly of a qualitative nature, exploring the initiatives’ organizational structure, goals and available resources. This systematic review highlights a pressing need for further research and impact measurement to better assess the role of grassroots initiatives in FLW reduction and climate change mitigation. It raises main directions for future research.
The marginal stability of the metastable TAP states
Authors: Plefka T 
Published: July 2020

Abstract
The existing investigations on the complexity are extended. In addition to the Edward–Anderson parameter q
2 the fourth moment

q

4

=
1
/
N

∑

i

m

i

4

of the magnetizations m

i
is included to the set of constrained variables and the constrained complexity Σ(T; q
2, q
4) is numerical determined. The maximum of Σ(T; q
2, q
4) (representing the total complexity) sticks at the boundary for temperatures at and below a new critical temperature. This implies marginal stability for the nearly all metastable states. The temperature dependence of the lowest value of the Gibbs potential consistent with various physical requirements is presented.
Study on the Main Inner Insulation of 1100kV UHVAC Oil-gas Bushing and the Structure Optimization Design of its Fittings
Authors: Zhang Shiling 
Published: July 2020

Abstract
The oil-gas bushing has the characteristics of compact structure and small floor area, which can be widely used in various voltage level substations to realize the electrical connection between transformer and high-voltage combined electrical apparatus GIS. At present, the development of oil-gas bushing for 1100kV AC extra high voltage level is the first time. It is necessary to solve the problems of the material development of main insulation core of bushing, the design and optimization of main insulation of core and the current carrying capacity of large current conductor of bushing structural design and other key technologies. This paper focuses on the analysis and calculation of the optimization design of main insulation structure of 1100kV UHV oil-gas bushing. Considering that the end of the oil-gas bushing is connected to the winding side of the transformer and the center conductor of the high-voltage combined electrical appliance in the narrow space, it is necessary to optimize the design of the structure of the fittings at both ends of the bushing to ensure that the electric field distribution is reasonable under the action of high voltage, and that it carries large current without local overheating area. Based on this, three-dimensional finite element simulation model of UHV oil-gas bushing tooling is established, and the main insulation structure of the bushing core is optimized to make its axial and radial field strength meet the control requirements. The topological structure and size of the current carrying structure in the center of the bushing and the voltage equalizing device at both ends are given, and the prototype and supporting tooling structure of the oil-gas casing are developed according to the optimized design structure, and go through various bushing type tests. In this paper, the optimized design and development of the main insulation structure of UHV oil-gas bushing, taking into account processing and installation of transformer outgoing line structure and the GIS electrical connection supporting tooling of the high-voltage combined apparatus, simulating the actual operation environment of the UHV oil-gas bushing with full voltage and full current, and carrying out the long-term performance evaluation test, has good engineering application guidance value.
Preliminary study on Applicability of mine water inflow forecasting method
Authors: Zhang Nan , Wang Daoxi , Li Haobing , Guo Xinwei , Wu Kai , Du Kai 
Published: July 2020

Abstract
The commonly used calculation and prediction methods of mine water inflow in China are divided into deterministic and non-deterministic. Affected by many influencing factors, the applicability of the calculation method has not been reflected, resulting in a large prediction error. By combing the main influencing factors of mine water inflow, The characteristics, advantages, and limitations of evaluation prediction methods, Clarify the selection of the three-stage prediction methods in the exploration phase, well development phase, and mining phase, Establishing a framework for the principles and prediction process framework of mine water inflow forecasting, Achieve precise forecasting and reduce the risk of approval of water resources demonstration by management departments, Helps to turn mine water into waste and improve the management of comprehensive utilization of mine water, Realize the integration of unconventional water resources into the unified allocation of water resources, alleviate the conflict between supply and demand of water resources, and improve the efficiency and utilization efficiency of regional water resources allocation.
Effect of Moisture Content on the Ductility of Cemented Paste Backfill
Authors: Wang Yongyan , Yu Zhuoqun , Cui Lizhuang , Wang Yong 
Published: July 2020

Abstract
The ductility of cemented paste backfill at different moisture content were researched in this paper. The cemented paste backfill specimens at three different moisture content were prepared and the uniaxial compressive tests were conducted. The results show that the compressive strength of specimen decreases with the increase of moisture content. However, the ductility of specimen increases with the increase of moisture content. The elastic modulus and the rate of post peak stress reduction decreases with the increase of moisture content. The obtained results are helpful to better understand the behavior of the cemented paste backfill under different moisture condition, which could provide guidance for safe mining.
Geochemical characteristics and environmental quality assessment of fluorine in soil and water environment of Jinbei
Authors: Huan Jinyao 
Published: July 2020

Abstract
Fluorine is a necessary trace element in humans, lack or excess can adversely affect human health. The geochemical characteristics and environmental quality of fluorine in soil and water environment of Jizhou district in northern Tianjin were studied. The results show: fluorine content in surface soil 201×10-6 ∼8545×10-6, average 757 ×10-6. The average content is the background value of surface soil in Tianjin 1.25 times twice, all over the country 1.58 times twice. In soil vertical profiles, the content of fluorine in clay soil is higher than that in sandy soil. The average groundwater fluorine content in plain area 1.50 mg/L, average mountain area 0.47 mg/L. Plain area is obviously larger than mountainous area. Over the whole district 90% the fluorine content of surface soil showed excess and high level. Proportion of groundwater samples in plain area with fluoride class IV and class V water 61.54%. Fluorine excess ratio in maize samples 26.67%. Maximum excess multiple greater than 2 times twice. Overall, the fluorine content in the surface soil and the groundwater in the plain area of North Tianjin is significantly higher, For high-fluorine areas, the fluorine content of some bulk agricultural products has exceeded the standard. We should pay attention to it.
SWOT analysis of industrial site redevelopment in mining area of Resource-based City -- Taking Pingshuo, Shanxi Province as an example
Authors: Yao Zhen , Yu Qinfei 
Published: July 2020

Abstract
An important problem to be solved in the transformation and development of resource-based cities is the redevelopment and utilization of industrial sites in mining areas. This paper takes Pingshuo Coal Mine as an example, SWOT analysis model is used to analyze the four factors of advantages, disadvantages, opportunities and risks. The result shows that the dominant factors are the existing transportation, electricity, water supply, heating and sewage treatment facilities. The weaknesses are potential pollution risks and difficulties of facility retrofit. The opportunity is brought about by new urbanization and new rural construction. The challenge is how to attract people to the industrial areas with depleted resources.
Characteristics, Challenges and Suggestions of Geological Disaster Prevention and Control in China
Authors: Yao Zhen 
Published: July 2020

Abstract
Geological disasters are prone, predominant and frequent in China; China has become one of the countries with the most sudden geological disasters in the world. China has initially established comprehensive prevention and control system which take investigation and evaluation, monitoring and early warning, treatment and disposal as its core by the end of 2018. There are still many challenges in the prevention and control of geological disasters in China, first, the accuracy of survey and evaluation is obviously insufficient, second, the professional level of group monitoring and prevention needs to be improved, third, the prevention and control of geological disaster and land spatial planning have not been planned as a whole. Four suggestions are put forward: the first is to improve the accuracy of geological survey and evaluation, the second is to improve the monitoring and early warning capacity, the third is to increase the control of land spatial planning, and the fourth is to improve the scientific and technological support capacity.
Study on Rock Mechanics Parameters of Benxi Formation in Yanchang gas field, Ordos Basin
Authors: Zhang Suya , Li Zhenhua 
Published: July 2020

Abstract
Rock mechanics parameters can reflect the brittleness of the formation and determine the effect of reservoir fracturing, and they are very important for improving unconventional oil and gas production. Triaxial compression test and acoustic pulse test are carried out in the sandstone samples of Benxi formation in Yanchang gas field of Ordos basin in order to obtain the accurate mechanical properties of the formation. The static elastic modulus ranges from 23.74 GPa to 32.46 GPa and the static Poisson’s ratio ranges from 0.181 to 0.239 in triaxial compression test. The dynamic elastic modulus ranges from 33.18 GPa to 52.56 GPa and the dynamic Poisson’s ratio ranges from 0.26 to 0.30 in acoustic wave test. It can be seen that the dynamic parameters are generally larger than the static parameters, and the relation between them is Es = 0.3624Ed + 11.865, R2 = 0.8119; μs = 1.243μd - 0.0911, R2 = 0.7267.The relation between dynamic and static rock mechanics parameters provides a reliable parameter basis for the study of mechanical properties, brittleness and fracturing.
Estimation of Rainfall Resource Potential and the Utilization System in the Typical Watershed of China Loess Plateau
Authors: Wu Kai , Gu Jinyi , Yin Huijuan , Li Lingqi 
Published: July 2020

Abstract
As the second longest river in China, the Yellow River is noted for its relatively low water discharge as compared with its huge sediment load. The Xiliu Gully and Heilai Gully, two typical watersheds located in the Inner-Mongolia reach of the upper Yellow River and China Loess Plateau area, is a serious soil erosion and water-deficient region, which belongs to the arid and semi-arid inland basin. In the region, water-consumption mainly depends on rainfall, where there contains grassland, cropland and desert and so on. With the development of economy and society of Eerduosi, the problem of water shortage has become a bottle neck of further development. Based on the hydrogeology features in the Loess Plateau Area, the study proposed the concept of rainfall resource potential, which was composed of surface runoff and soil water. A water yield model based on InVEST (the Integrated Valuation of Ecosystem Services and Tradeoffs) was employed to estimate rainfall resource potential of the two typical watersheds. Based on extensive field research and literature analysis, the process of runoff generation, water enriching and transport was concluded. The highly efficient utilization of rainfall resource in different regions was integrated, which were made of silt trap dams, shallow shaft and ponds. The study provided scientific basis for Spatial Distribution of silt trap dams and high efficient utilization mode of rainfall resource resources.
Study on in-situ stress of heterogeneous shale reservoir
Authors: Zhao Yongfu , Yang Shaochun , Liu Chen , Wu Yupeng , Yang Rui 
Published: July 2020

Abstract
In-situ stress is the important basis for reservoir evaluation. Most of the in-situ stress solutions are based on well logging data and rock mechanics experiments. In fact, according to the actual geological condition, heterogeneity is an important factor affecting shale reservoir recovery. However, the effect of rock heterogeneity on stress is less considered. In this paper, taking well FY1 in block FY1 of Dongying depression as an example, the method of overall mechanical model analysis is used to analyze the in-situ stress of the study area, and the influence of rock heterogeneity on in-situ stress is studied, which reflects the true distribution of in-situ stress in shale reservoir. The research results show that, the minimum horizontal principal stress and the maximum horizontal principal stress increased slightly with the increase of depth, and the vertical stress increases gradually with depth, which is in direct proportion.
The application and ecological profit on the road slope of the palm-mat geotextiles
Authors: Li Chungang , Liu Qiulin , Nie Yi , Xu Ruiping , Yue Chonglun , Wu Bo 
Published: July 2020

Abstract
Soil erosion is one of the world’s most serious environmental problems, causing extensive loss of potentially productive soil and many accidents. The utilization of plant-mat geotextiles for the remediation of the soil erosion has attracted much attention in recent years. The plant-mat geotextiles showed better performance on water and soil conservation than most of other plant-mat geotextiles, the application status of palm-mat geotextiles in the main fields of slope protection, sand fixation and vegetation restoration was summarized. Moreover, the ecological profit on the road slope of the palm-mat geotextiles was also reviewed. The summary results of the existing researches indicate that plant-mat geotextiles is an effective soil conservation strategy with promising application prospect and ecological profit.
Research on the Status and Development of Cultivated Land Quality Inspection Technology System
Authors: Xiong Yufei , Li Yanan 
Published: July 2020

Abstract
The quality inspection of arable land plays an important role in agriculture and is the premise for evaluating the quality of arable land. In recent years, with the country’s emphasis on agricultural work and the continuous development of arable land quality inspection technology, China has gradually established an arable land quality inspection system. The development of agriculture has produced a greater impetus. Cultivated land quality inspection technology and management are the basis for the development of the industry. This article systematically discusses the development status and existing problems of arable land quality inspection, and points out corresponding countermeasures and methods to promote the further development of arable land quality inspection.
Quantitative Impact and Research on Water Supply Management and Demand in Beijing under the WEAP Model
Authors: Yang Liu , Hao Meng , Cao Qingyi , Liu Keling , Xiao Liangpeng , Pei Lin , Wu Xiaoshi 
Published: July 2020

Abstract
Predicting the future water supply and demand is an important basis for achieving optimal water resource allocation and serves as an effective methodology to solve the imbalances between water supply and demand in cities and achieve long-term stable supply and efficient water resource utilization. In this study, we use the water evaluation and planning (WEAP) model to quantitatively analyze the effects of the water resource policies on the balance between the supply and demand of water resources in Beijing and predict the water demand and shortages in Beijing from 2019 to 2035. The simulation results indicate that at the watershed scale, different levels of water shortage can be observed in the five major watersheds under different scenarios. By 2035, the unmet demand in the Beiyunhe river basin will be the most serious, accounting for ⩾45.48% of the total unmet demand. The policy constraints play a crucial role in alleviating the supply-and-demand imbalance of water resources. Different policies can be used to reduce the total water demand; however, the population growth control policies exhibit the greatest effect on the alleviation of water resource shortage in Beijing and can reduce the water demand by 3.42 million m3 when compared with that in a scenario without any control policy. The results of this study can provide important references to solve the urban water resource supply and demand imbalances and realize rational allocation of the water resources.
Research on Image Processing of Signal-to-Noise Ratio and Resolution Based on Seismic Profile
Authors: Li Jie 
Published: July 2020

Abstract
In view of the characteristics of low frequency of seismic data coverage, strong surface interference, low signal-to-noise ratio and low resolution, this paper studies a set of pre-stack combined denoising technology, adaptive predictive deconvolution technology, anisotropic motion Correction and high-precision speed analysis, Kirchhoff restack time migration imaging and other key technologies are the core processing methods. The layer-by-layer similarity learning method is used to reconstruct high-resolution images, especially when the image is enlarged, it can still be clearer. Restore the detailed features of the texture of the seismic profile image. The actual profile test shows that the quality of image reconstruction has been improved, and good results have been obtained in terms of visual effects and peak signal-to-noise ratio.
A gas well inspection automation system based on IoT perception technology
Authors: Li Yulong , Yang Fan , Guo Huijie 
Published: July 2020

Abstract
This article analyzes the problems faced by the daily safety inspection and emergency repair of gas shafts operation. Corresponding countermeasures are put forward for each problem faced. These countermeasures are combined into a gas well inspection automation system using mature IoT perception and communication technologies. This system realizes all-round management and control of gas operation site safety. It is of great significance to the intelligent construction of the gas industry.