bluuebunny/crossref_metadata_2025_split huggingface dataset:
The Effect of Palm Oil Planting Material Characteristics on the Population of Weevil Pollinator (Elaeidobius kamerunicus)
Authors: Wahyuni M , Wagino  , Manurung H 
Published: June 2020

Abstract
The productivity of oil palm plants is determined by the success of pollination. Some factors that influence are the planting material, rainfall conditions and the adequacy of pollinating weevil, namely Elaeidobius kamerunicus (EK). Producers of planting materials produce crosses of Dura X Pisifera hybrids with their spesific characters. This research aim was to determine the effect of planting material on flowering characteristics and EK population.The research was conducted in Adolina (DxP Simalungun) and Dolok Ilir (DxP La Me) in January 2018 - October 2018 with a descriptive method. The research results showed that the character of oil palm planting material affected the number and character of male flowers as a source of pollen.In planting material with a large number of male flower spikelet, the DxP Simalungun has a positive effect on the population of Elaedobius kamerunicus. The efforts to increase the EK can be achieved by applying the Hatch and Carry technique which can increase EK populations by 32-45%.
Response of Soil Microbial Biomass Carbon, Nitrogen and Enzyme Activity to Sophora Davidii Skeels and Pennisetum Sinese Roxb Intercropping Systems
Authors: Zhang Yujun , Shang Yishun , Wang Puchang , Zou Chao , Ding Leilei , Zhang Wen , Yang Fuli , Tang Huajiang , Liu Jiajia 
Published: June 2020

Abstract
To understand the response mechanism of soil microbial biomass carbon content, soil microbial biomass nitrogen content and soil enzyme activities to intercropping pattern, an experiment consisting of three cropping patterns: Sophora davidii Skeels monocropping pattern, Pennisetum sinese Roxb monocropping pattern and S. davidii and P. sinese intercropping pattern had established in the southern region of Guizhou Province, China. The results showed that soil microbial biomass carbon content, microbial biomass nitrogen content and enzyme activities were gradually reduced with the depth (0-30 cm) of the soil layer increased under the three cropping patterns. The microbial biomass carbon and nitrogen content of S. davidii and P. sinese intercropping pattern were significantly higher than those of S. davidii monocropping and P. sinese monocropping pattern in 0-20 cm soil layer (P <0.05). Five soil enzyme activities were ranked: P. sinese monocropping > S. davidii and P. sinese intercropping > S. davidii monocropping in most soil layers. The soil nutrient contents (soil organic matter, total nitrogen, total phosphorus, and total potassium) and soil microbial biomass content (microbial biomass carbon and nitrogen) were highly significant positive correlation (P <0.01), while five soil enzyme activities had a significant positive correlation with each other (P <0.05). However, there was no significant correlation between soil microbial biomass content and soil enzyme activities. Additionally, there was non-significant correlation between the activiies of nitric oxide synthetase, the activiies of β-N-acetylglucosidase and the activiies of leucine aminopeptidase (P> 0.05), but the activiies of β-N-acetylglucosidase, the activiies of soil nitrogenase, the activiies of soil Leucine aminopeptidase and the activiies of soil glutamine synthetase were showed a significant (P <0.05) or very significant positive correlation (P <0.01). In summary, the intercropping pattern of S. davidii and P. sinese has a significant effect on soil quality improvement in shallow soil (0-20cm), and the microbial biomass carbon, soil microbial biomass nitrogen and soil enzymes can be used as an important index for evaluating the changes of soil quality.
Exploration and Application of Resilience Theory in Land Consolidation Engineering
Authors: Xiong Yufei 
Published: June 2020

Abstract
Incorporating the theory of resilience into land remediation is an inevitable requirement of the development of the times. This paper explores the combination and application of resilience theory in land remediation projects through literature analysis and logical reasoning, and proposes the planning and design of land remediation. Relying on the theory of resilience, we should explore the theory of resilience and the direction of land rectification under the development of the times.
Determination of Heavy Metals in the Plant Sample Pretreatment Methods
Authors: Gong Li , Qiu Dongping , Yao Xusong , Yang Gang 
Published: June 2020

Abstract
In this paper, dry ashing method, mixed acid nitration (H2SO4-H2O2), three acid digestion (HNO3-H2SO4-HClO4) and aqua-regia-HClO4 these four test solution preparation method on the decomposition of plant standards GBW07603 processing, use atomic absorption spectrophotometry Zn, Cu, Pb, Fe, Cd, Cr six kinds of metal elements, and the measured values compared with the standard value. The results showed that after dry ashing recoveries higher than Zn recovery after acid digestion; Cu determination should not use dry ashing; Pb determination should not be used mixed acid nitration (H2SO4-H2O2) or tri-acid digestion method (HNO3-H2SO4-HClO4);dry ashing treatment after acid digestion Cr yield higher Cr recoveries. Comprehensive analysis of the low carbon content of the metal elements in plant samples (Zn, Cu, Pb, Fe, Cd, Cr) of the measurement, can be aqua-regia-HClO4 pretreatment method, and for comparing the carbon content high plant samples should be used as a dry ashing pretreatment method. That is, different pretreatment methods for the determination of different analyte have a certain impact.
Chinese Speech Recognition System based on Deep Learning
Authors: Shao Pengyuan 
Published: June 2020

Abstract
This paper builds a complete Chinese speech recognition system, including acoustic model and linguistic model, which can recognize the input audio signal into Chinese characters. The system realizes the modeling of acoustic model and linguistic model in speech recognition based on deep framework, of which the acoustic model is CNN-CTC and linguistic model is transformer. The data set uses THCHS-30, which refers to 30-hour Chinese speech database of Tsinghua University. The experimental results show that the Chinese speech recognition system based on deep learning achieves 90% accuracy on the test set and has an excellent effect on Mandarin speech recognition in quiet environment.
Study of the Utilization Efficiency and Its Influencing Factors of Water Resources in Yangtze River Economic Belt
Authors: Xu Sichen , Liang Hao 
Published: June 2020

Abstract
The Yangtze River Economic Belt has gradually become one of the regions with the strongest comprehensive strength and the greatest strategic competitiveness in China. Promoting the utilization efficiency of water resources in various provinces and cities in this region and minimizing the restraint effect of insufficient utilization of water resources on the economy can provide strong support for the development of the region from the perspective of water resources. The SBM model was used to measure the water use efficiency of 11 provinces and cities in the Yangtze River Economic Zone from 2007 to 2017 and Tobit model was used to identify the key influencing factors. The results show that the water use efficiency of the provinces and cities in the Yangtze River Economic Zone varies greatly, and the total factor productivity index of water resources shows an overall growth trend, which is mainly determined by the scale efficiency. The per capita GDP and the proportion of the first industry have a significant positive effect on the water use efficiency, while the government’s investment in water resources and per capita water resources endowment have a significant negative correlation. Based on this, some countermeasures and suggestions are put forward, such as strengthening inter-regional technical cooperation, optimizing water use structure, and reasonably investing in water conservancy facilities projects.
Design of Comprehensive Protection Device for Mine Isolation Lighting Signal
Authors: Long Ma , Qing Chen 
Published: June 2020

Abstract
In order to improve the safety and reliability of underground lighting circuit in coal mine, a comprehensive protection device for mine isolation lighting signal is designed based on the pir-50z intelligent protector. On the basis of the analysis of the status of coal in China’s energy structure and mine production safety situation, the mode of lighting and the role of comprehensive protection device for mine isolation lighting signal and were studied, the detailed design of comprehensive protection device for mine isolation lighting signal hardware circuit and software program was carried out.
CWAO Technology for the Treatment of Refractory-Biodegradable Organic Wastewater
Authors: Zhang Yongxun , Chen Shiqing , Chen Xin , Huang Jieyun , Chen Luoru , Wu Tongtong , Huang Jinming , Liu Yingxin 
Published: June 2020

Abstract
With the development of society and industrial progress, the types and quantity of organic wastewater produced by refractory-biodegradation have increased. As an effective way to treat refractory-organic wastewater, CWAO technology has attracted more and more attention in recent years. The principle of CWAO technology belongs to free radical reaction, which mainly includes two processes: the exchange of oxygen in wastewater and the reaction between liquid oxygen and contaminants supported on the catalyst. Free radical reactions include three specific processes: chain initiation, chain delivery and chain termination. Homogeneous CWAO reaction can efficiently treat high concentration of organic wastewater, but the catalyst cannot be recovered to form secondary pollution. Heterogeneity is the research hotspot of CWAO technology and a suitable means for the treatment of highly concentrated organic wastewater, which has been used more and more in printing and dyeing, pharmaceutical, chemical, manufacturing and other industries.
Capability of Several Marine Active Substances to Eliminate Hydroxyl Radicals
Authors: Zhang Yongli 
Published: June 2020

Abstract
Using hydroxyl radicals as an in vitro antioxidant model and using ascorbic acid (Vc) as a positive control, four important marine activities of trehalose, carboxymethyl chitosan, glucosamine hydrochloride, and rippled paphia small molecule peptide were studied Antioxidant ability of the substance in vitro. The experimental results show that the four marine active substances have good antioxidant properties, and their antioxidant properties show a certain positive correlation with the concentration; carboxymethyl chitosan has a stronger ability to eliminate hydroxyl radicals than the other three marine active substances. When the concentration was 4g/L, the elimination rate of para-hydroxyl radicals reached 91.71%.
Research on Reverse Supply Chain under O2O Classified Recovery Mode
Authors: Hong Li , Chen Wenjuan 
Published: June 2020

Abstract
In recent years, due to the continuous growth of social needs and the continuous innovation of science and technology, the demand for various products has grown rapidly. Fierce market competition has accelerated the upgrading of various products, resulting in a shortened product life cycle and a large number of obsolete products. At the same time, the development of the Internet has brought a new path for recycling-the O2O classification recycling model, which simplifies the product recycling path from consumers to manufacturers. Therefore, research based on the O2O classification recovery model has become the key to solving the waste product recovery.
Research on Rural Landscape Design Based on 3R Principle
Authors: Shi Yi , Wang Yilin , Zai Xiangting , Zeng Yan 
Published: June 2020

Abstract
In recent years, the pace of beautiful countryside construction in China has been accelerating, which has promoted the development of rural tourism industry and is of great significance to the economic development of vast rural areas. While paying attention to economic development, we should also realize the 3R principle, integrate more environmental protection concepts, and realize all-round development in rural areas. Based on the principle of 3R, this paper analyzed the rural landscape design, optimized the traditional design methods, selected more green recyclable materials, and improved the economic benefits of rural landscape design and environmental protection benefits, which provides power for the long-term development of rural areas.
Suitability of Recuperation Industry Development——A Case Study of Sichuan Province, China
Authors: Tang Jin , Wu Haoyue , Luo Luxi , Fu Gang 
Published: June 2020

Abstract
As an emerging industry, the development of recuperation industry is quite promising, and it’s becoming an important support to the transformation of resource-oriented cities, the integration of primary, secondary and tertiary industries in rural areas, and the development of new industries and new businesses in China. In this paper, the studies related to recuperation industry are reviewed, after which the theory of “6+1” is adopted into use for building a comprehensive index system to evaluate the suitability of development of recuperation industry. The results show that places including Chengdu, Liangshan, Panzhihua, Mianyang, Nanchong and Guangyuan are appropriate for developing recuperation industry. Among them, the advantages in supporting facilities of Chengdu lay a good foundation for the development of recuperation industry; sunshine-based and forest-based recuperation suites Panzhihua better; and highland-based recuperation suites Yi Autonomous Prefecture of Liangshan. Places including Suining, Neijiang, Zigong, Aba and Garze are not appropriate for developing recuperation industry. The measurement results, with the development reality of Sichuan considered, provides some references for the development of recuperation industry in Sichuan in future.
Research on Industrial Landscape Reconstruction Design of Baoji Shenxin Yarn Factory
Authors: Qiao Zhi , Hui Dan , Huang Jingfan 
Published: June 2020

Abstract
This paper is devoted to the study of industrial heritage landscape reconstruction from the perspective of cultural memory. Taking the industrial landscape reconstruction design of Baoji Shenxin Yarn Factory as an example, the historical value will be excavated and extended in all directions. Combining the traditional concept of industrial heritage, historical and cultural status, site composition and development trend, the stage industrial heritage will be presented. The problems existing in the landscape renovation, and systematic analysis, elaboration and summary of the overall environmental characteristics of Shenxin Yarn Factory. This research combines the heritage itself with landscape planning and design, comprehensively utilizes the advantages of industrial heritage resources in combination with the design principles of protection, harmony and utilization, and combines with the development of sustainable tourism to protect the construction and art of China’s industry and achieve industrialization. The value of the heritage is maximized, and the trinity of heritage landscape, economy and environment is coordinated towards the diversification of ecological, functional, practical, economic, cultural and aesthetic.
Research on Flight Trajectory Optimization Based on Quantum Genetic Algorithm
Authors: Li Yibo , Qin Shuaitao , Jing Lei 
Published: June 2020

Abstract
Taking the passenger aircraft A320 as the research object, the trajectory optimization of the aircraft climbing section under wind disturbance is carried out. Through the analysis of the aircraft’s descent process, the kinematics model, fuel consumption model and atmospheric model of the aircraft are established, and the objective function and constraints of the problem are obtained. The quantum genetic algorithm is used to transform the optimal control problem into a nonlinear programming problem. The optimal trajectory of the aircraft’s shortest descent time is obtained by simulation. The effects of different cost indices on the fall time and fuel consumption are discussed.
Influence of Long-Term Application of Organic Fertilization on the Effects of DCD in Brown Soil
Authors: Fang Zhaohui , Huo Renjie , Luo Peiyu , Han Xiaori , Yang Jinfeng 
Published: June 2020

Abstract
Nitrification (DCD) inhibitor has been proved to be effective in retarding nitrification process of nitrogen in the soil. Application of nitrification inhibitors to the field is considered to be a major method in controlling nonpoint pollution induced by nitrogen fertilizer in agricultural production. Thus a simulating experiment was carried out to study the Influence of long-term application of organic fertilization on the effects of different concentrations of Dicyandiamide in brown soil, and the best application rate was screened to provide references for agricultural practice. Soil samples (0-20cm) were taken from two treatments in October 2017: (1) no fertilization (CK); (2) pig manure input (M). The samples were sieved while still fresh and incubated at a constant temperature (25°C) and soil moisture in different treatments remained 60 percent of field water capacity for 42 days with periodic subsamplings. The experiment included unfertilized control, soil appended with urea nitrogen of 0.4g/kg alone, soil appended with urea nitrogen of 0.4g/kg and 1%DCD, soil appended with urea nitrogen of 0.4g/kg and 2%DCD and soil appended with urea nitrogen of 0.4g/kg and 5%DCD (The Percents represents the percentage of DCD depended on the amount of applied pure N). During the experimental period, the contents of ammonium nitrogen (NH4
+-N), nitrite nitrogen (NO3
--N), pH and nitrification potential were measured. Results of laboratory incubations indicated that DCD effectively inhibited the transformation from ammonium nitrogen to nitrate nitrogen in brown soil and the trends were N+5%DCD > N+2%DCD > N+1%DCD>N. It was found that nitrification was always greater in long-term application of organic fertilizer soil than in long-term unfertilized soil. Long-term application of organic fertilizer reduced the inhibitory effect of DCD.
A Novel Indoor Air Quality Standards and Design Methods in Environmental Assessment
Authors: Lu Youhong 
Published: June 2020

Abstract
In recent years, indoor air pollution has become one of the research hotspots. In the environmental assessment project, the indoor air quality standards have been explicitly included in the control items of China’s green building environmental evaluation standards, and controlling the indoor environment has become important to achieve green buildings. Analysis of the main factors affecting indoor air quality and discussion of design methods based on typical pollutants for indoor air quality are important links for achieving green environmental assessment.
Research on Integrated Ecological Management Engineering Model of Soil Organic Reconstruction
Authors: Li Juan , Lu Yangjie , Shi Chendi 
Published: June 2020

Abstract
In view of the comprehensive problems of soil erosion and soil structural instability in the shoal land, in the process of remediation of Bailongjian in Huayin County, Shaanxi Province, the land reclamation and overburden were comprehensively designed using land leveling, river treatment and overburden comprehensive treatment techniques. Engineering, irrigation engineering, roads and shelterbelts; the implementation of the project model, the total rectification scale is about 67.94hm2, and the newly added cultivated land is about 61.93hm2. The utilization rate and output rate of land have been improved, agricultural production conditions and farmers’ living environment have been improved. At the same time, it is of great significance to prevent soil erosion, continuously establish farmland ecosystems, and promote the improvement of comprehensive agricultural production capacity.
Study on Urban River Ecological Landscape Design
Authors: Liu Yangyang 
Published: June 2020

Abstract
The ecological design of urban rivers is an important part of the urban landscape planning and design system. However, the current urban rivers in China, the rivers are seriously polluted, the primary environment is destroyed, and the water bodies lose their self-purification ability, which not only affects the image of the city, but also threatens the health of the citizens. Therefore, we must pay attention to the environmental design of urban rivers. This article discusses the composition of the river landscape from a landscape perspective. With the increasing emphasis on environmental protection, people’s demand for landscape is getting higher and higher. How to integrate humanistic concepts into design on the basis of ecology is also worthy of our consideration.
Research on Sorting Method of Marine Domestic Waste Based on BP Network
Authors: Zhang Rongjun 
Published: June 2020

Abstract
The feature extraction method of the acoustic wave of different objects in the marine domestic waste is elaborated in this paper, the intelligent recognition model and algorithm of the material based on neural network is established, and sorting tests on common objects such as glass and plastic are conducted, the effect of this sorting method is verified to provide a new idea for the intelligent sorting of marine domestic waste.
Research on Tourism Economy and Tourism Eco-environmental Effect Based on Supply-side Perspective
Authors: Chen Jun 
Published: June 2020

Abstract
Since China’s economy entered the new normal, the government has continuously adjusted the structure of the national economy. As a green economy, tourism economy has been favored by governments everywhere. Tourism has become an important pillar industry of China’s national economy. The development of tourism economy promotes consumption and realizes the growth of economic benefits. Tourism economy has positive and negative effects on tourism ecological environment. As a kind of capital, tourism ecological environment has great influence on tourism economy. Tourism is a comprehensive and linked production and transformation, which is accompanied by a series of social and economic activities in the process of tourism consumption, adding vitality to the development of the whole city’s economy, culture and culture. Theoretically, ecology and environment are indispensable to human beings, and they are one of the elements of human wealth creation. Based on the perspective of supply side, this paper analyzes the relationship between environment and economy, environmental benefits and economic benefits in tourism development from the perspective of factors affecting tourism economy.
Multi-Agent Cooperative Target Search Based on Reinforcement Learning
Authors: Qin Xudong , Li Xiaomao , Liu Yuan , Zhou Rui , Xie Jiajia 
Published: June 2020

Abstract
This paper considers the problem of cooperative search for multiple stationary targets by multi-agent with limited sensing and communication capabilities. An integrated learning algorithm for cooperative search based on reinforcement learning is proposed. In particular, we consider a state containing local probability map and neighbouring agents map which provides the agent with information to plan routes and search collaboratively. In addition, a reward function consisting of target found reward, time consumption reward and guiding reward is designed to guide agents to explore and learn efficiently. To ensure the stability of training process, the policies of agents are frozen and shared periodically in a distributed training framework. The proposed method is tested under simulated scenarios compared with coverage control methods and random strategies. Multiple simulation results show considerable advantages.