bluuebunny/crossref_metadata_2025_split huggingface dataset:
The effect of planting mode on the growth of pepper in a sunlight greenhouse
Authors: Liu Na , Wei Zhengying , Wei Haoran 
Published: March 2021

Abstract
To adapt to the development of mechanization, a new mechanized planting mode is needed. Taking capsicum as the research object, a comparative test of mechanical east-west ridge planting mode and artificial north-south ridge planting mode was carried out in Hotan sunlight greenhouse with 2ZYZ-2 transplanter. The results showed that transplanting depth of 6 cm, row spacing of 30 cm and row spacing of 40 cm were the best working parameters of the transplanter. The plant height of artificial model pepper was 4.1% and 3.95% higher at 35 and 70 d, while the stem diameter of mechanized model pepper was 5.72% and 3.63% higher at 35 and 70 d. The difference was significant between them. However, the difference between the underground part of the two modes is small, while the accumulation of the mechanized part of the above ground is high and the characters are reasonable. The effective yield of mechanized mode is 2.38 t, which is 11.21% higher than that of manual mode. The two modes of pepper have the same nutritional composition. Therefore, the mechanized planting mode has certain advantages over the artificial planting mode and it can be used in Hotan sunlight greenhouse for pepper production.
Investigation and analysis of ecological environment in the north of Bohai Sea
Authors: Zhou Ruijia , Sha Jingjing , Pan Yulong , Liu Xinyu , Du Xiaoyuan , Bao Mengmeng , Zhao Sheng 
Published: March 2021

Abstract
In order to investigate the ecological environment of Tangshan offshore breeding area (in the north of Bohai Sea), water quality and phytoplankton were investigated and monitored in two consecutive years (2019 and 2020). To evaluate and analyze the water condition of the breeding area, we used the nutrition index (E), Nutritional status quality index (NQI), organic pollution assessment index (A), Biodiversity Index (H’) and Integrated environmental quality index (EQI). The result showed that the range of E was 0.01∼0.97 in May (2019), 0.14∼0.59 in August(2019), 0.25∼0.63 in December(2019), 0.04∼1.21 in August(2020); the range of A was 0.39∼1.33 in May(2019), 0.73∼1.16 in August(2019), 0.87∼1.19 in December(2019), -0.15∼2.33 in August(2020); the range of H was 0.84∼2.11 in May(2019), 1.07∼1.21 in August(2019), 1.92∼2.86 in December (2019), 0.71∼1.47 in August(2020). By calculation, EQI was 94.34 in 2019 and 100 in 2020. The results showed that the nutrient level of the culture area was generally low, and it was in poor nutrition state. The phytoplankton diversity in summer was better than that in spring and winter. The organic pollution degree of the water area was low, but the water quality was good. In conclusion, the environmental quality of aquaculture area was good, which could meet the requirements of functional area.
Preparation and Properties of Straw/PLA Wood Plastic Composites for 3D Printing
Authors: Jiang Jie , Gu Hai , Li Bin , Zhang Jie 
Published: March 2021

Abstract
Based on the single screw extruder, straw/PLA composites with different straw mass fraction, drawing temperature and screw speed were prepared with corn straw powder and PLA particles as raw materials, and FDM printing test was carried out to further study the influence of straw mass fraction, drawing temperature and screw speed on the mechanical properties of straw/PLA composites The results show that the tensile strength of the composite is the best when the straw content is 15%, the drawing temperature is 215°C, the screw speed is 60r/min; the flexural strength of the composite is the best when the straw content is 15%, the drawing temperature is 215°C, the screw speed is 70r/min; the hardness of the composite is the best when the straw content is 10%, the drawing temperature is 195°C, the screw speed is 70r/min.
Research on the Control Path of Event Tourism Pollution in Scenic Spots
Authors: Ding Nan , Zhu Hongbing , Zhao Lei 
Published: March 2021

Abstract
This paper analysed the main environment pullotions of event tourism in the Beer Festival of Liyang scenic spot and its characteristics, lastly put forward the measures for reducing negative effect of event tourism pullotions. The results showed that the main pullotion sources included solid waste, air pollution and soil pullotion. The solid waste of event tourism differs from daily garbage with more reusable materials such as paper, wood, metal and glass. While there are air pollution and soil pullotion in event tourism senic spot differ from sightseeing area. As concentrated pullotions distribution, more water in garbage and high reusability are the characteristics of Beer Festival environmental pollutions, so measures as new recycling technology, small processing stations and standardized management given to cut down the event tourism pollutions.
Response of Lolium perenne Growth to Cadmium Stress
Authors: Yin Peng , Fan Jing , Peng YanJie , Hu Xia 
Published: March 2021

Abstract
The chlorophyll, malondialdehyde and relative conductivity of Lolium perenne had different degrees of physiological response to Cd stress. Lolium perenne had certain physiological adaptability to Cd stress, which could reduce the damage of Cd to Lolium perenne cells. Low concentration of Cd stress could also promote the synthesis of chlorophyll and increase the photosynthetic products. Once the concentration of Cd was too high, the growth of Lolium perenne would be affected. The accumulation of Cd in plants exceeds a certain limit, which damages the physiological function of plants and affects the normal growth of plants. It is suggested that Lolium perenne has a certain remediation ability to cadmium contaminated soil. The experiment can provide a certain reference for the screening of cadmium tolerant plants and the remediation of cadmium contaminated soil.
Investigation and Protection of Ancient and Famous Trees Resources in Xinhua County
Authors: Xiao Yanwu , Wang Dinglong , Wu Yi 
Published: March 2021

Abstract
On the basis of investigation and research, the characteristics of ancient and famous trees in Xinhua County were analyzed. Firstly, the paper analyzed the distribution of families, genera and species of ancient tree resources in Xinhua County. Secondly, the distribution characteristics of ancient and famous trees: 1.the ancient and famous trees are distributed in towns and villages. 2. Tree species with the number of ancient and famous trees exceeding 1000 years. 3. Value analysis of ancient and famous trees. Then, this paper analyzed the trees values:1. Important historical and cultural values; 2. Important medicinal value; 3. High edible value. Finally, some protection countermeasures of ancient and famous trees have been proposed.
Emergency administration: public administration model under major epidemic condition-- A case study of the spread period of new coronavirus pneumonia
Authors: Ye Haiyan 
Published: March 2021

Abstract
The transition of public administration mode has always been the focus of society and the organic unity of administration mode and administrative environment is the basic requirement for effective governance as well as implementation of our party’s principle of seeking truth from facts in the field of public administration. In this paper, the author summarizes the administration mode that the government adopts to deal with challenges from non-marketization along with decentralization and dual command in the spread period of the major epidemic “new coronavirus pneumonia” as emergency administration. In order to concentrate on making a good control of the epidemic, current normal administration mode needs to be transformed into an all-round emergency administration mode in the face of abnormal condition, which is based on emergency market control with emergency power control as the core, emergency crowed control as the key, emergency information control as the carrier and other controls as the guarantee.
The study of Co2+ on waste lithium-ion batteries with acid leaching
Authors: Lv Xiaoshu , An Changwei , Liu Jia , Cao Xu , Liu Jiaojiao 
Published: March 2021

Abstract
In order to reduce the waste lithium ion battery pollution to the environment, and realize the recycling of valuable resources. The paper studied the process of the citric acid leaching extraction of Co2+ from waste lithium battery cathode material. We investigated the influence of five factors (citric acid concentration, reaction temperature, solid-liquid ratio, acid leaching time, the amount of reducing agent) acid on extracting rate of Co2 +. The results show that the optimum technological conditions are the concentration of citric acid for 1 mol/L, the amount of reducing agent for 1vol. %, solid-liquid ratio of 3g/100ml, reaction temperature 70°C, reaction time 120 minutes. In this condition, the extraction rate of Co2+ reaches 96%.
Characteristics of nitrogen pollution for shallow groundwater in typical urban planning area in Taihu Lake Basin
Authors: Zhao Donghua , Zhu Xiaoming , Shu Mengzhao 
Published: March 2021

Abstract
In order to verify the nitrogen pollution status of shallow groundwater in typical city of Taihu Lake Basin, urban planning area of Suzhou city was selected as the study area, and 14 sampling sites representing different land use types were selected to carry out water quality analysis. The status, temporal variability of nitrogen pollution and composition characteristics of various forms of nitrogen for shallow groundwater were analyzed. The results show that the nitrogen pollution of shallow groundwater in study area is relatively serious. The average contents of total nitrogen, dissolved inorganic nitrogen, total organic nitrogen, ammonia nitrogen, nitrite nitrogen and nitrate nitrogen are 8.23, 5.45, 2.77, 2.53, 0.12 and 2.81 mg/L, respectively. The variation coefficients of various forms of nitrogen are large and the spatial differentiation is significant. The contents of ammonia, nitrite and nitrate in shallow groundwater show an obvious spatial distribution characteristics. Nitrogen pollution in old urban areas is much more serious than other types of areas, especially ammonia nitrogen pollution is particularly prominent. Inorganic nitrogen is the main form of nitrogen in groundwater, while ammonia nitrogen is the main form of inorganic nitrogen.
Hydrochemical properties and influencing factors of nitrogen pollution for shallow groundwater in the Urban planning area of Suzhou City
Authors: Zhao Donghua , Zhu Xiaoming , Shu Mengzhao 
Published: March 2021

Abstract
Detailed study of the chemical analysis results of 14 shallow groundwater samples, representing different land use types, were carried out in an attempt to identify the hydrochemical properties and influencing factors of nitrogen pollution for the Urban planning area in Suzhou city, China. Hydrochemical properties were analyzed by water quality and its’ main influential factors of nitrogen pollution were analyzed by using ArcGIS geostatistics module and factor analysis method. The results show that the water chemistry type of shallow groundwater in the study area was mainly HCO3-Ca·Na type, the shallow groundwater was in a strong reducing geological environment rich in organic matter. Shallow groundwater shows a significant nitrogen occurrence with high ammonia and low nitrate owing to the strong reducing geological environment with abundant organic matter and low oxygen in the study area.The occurrence forms of nitrogen in shallow groundwater were controlled by the oxidation-reduction environment. Factor analysis shows that the nitrogen content and pollution of shallow groundwater are mainly controlled by human activities and geological conditions, followed by formation lithology, redox conditions and topography.
Research on Environmental Risk Assessment Method of Chemical Industry Park
Authors: Xin Li , Meng Fanbin , Zhang Ning 
Published: March 2021

Abstract
Environmental risk assessment of industrial parks is a hot spot in the field of environmental management and safety engineering. Risk assessment can quantify the possible extent of the impact or loss of risk events on life, property, environment and other aspects. This study sorts out three types of current approaches for risk assessment in industrial parks. We introduced the applications of those approaches, intending to prompt the further study of ERA for industrial park.
Effects of different fertilization treatments on soil compaction and crop growth
Authors: Liu Zhe , Cao Shiliu 
Published: March 2021

Abstract
In order to explore the effects of different fertilization treatments on soil properties and crop growth during the maturation of raw soil, a pot planting experiment with different fertilization treatments was carried out. Three fertilization treatments were set up in the experiment: single organic fertilizer treatment (OF), pollution-free fertilization treatment (NP), and conventional fertilization treatment (CF). The compactness of different soil layers,maize plant height, Chlorophyll value and above-ground biomass under the three fertilization treatments were measured. The experiment results showed that: compared with CF treatment, OF and NP fertilization treatment can better improve soil compaction and increase the plant height and leaf green value of maize, the chlorophyll value of maize under OF and NP treatments increased by 22.6% and 10.6%, and the plant height of maize increased by 58.0% and 31.8% respectively. The order of the magnitude of change of soil compaction in different soil layers was CF> NP> OF. Under conventional CF treatment, the maximum compactness value of 20 cm soil layer was 1426 kPa. For the aboveground biomass of maize, the aboveground biomass of maize under OF and NP fertilization treatments were significantly higher than that of CF fertilization treatment (P<0.05). In summary, OF and NP fertilization treatments can help improve the compaction of raw soil and the growth characteristics of crops, and increase the productivity of raw soil.
The Application Progress of Nano Materials for Remediation in Contaminated Soil
Authors: Sun Pei , Sun Yingying , Luo Yuhu , Hu Yi 
Published: March 2021

Abstract
With the rapid development of population and industries, the pollution of land resources is more and more serious. Therefore, improving the contaminated soil for reuse become a new idea to make rational use of land resources, also to solve the contradiction among population, resources and environment. This study integrates the correlational research on the application of nano materials for remediation in contaminated soil, so as to provide a theoretical basis for rational and efficient use of land resources, make a contribution to the efficient use of land resources of China as well.
Advances in the Study of Microbial Adsorption of Heavy Metals
Authors: Chang Min 
Published: March 2021

Abstract
This paper discusses the current application of microorganisms in adsorption of heavy metals. The structure of microbial adsorption of heavy metals, the factors affecting microbial adsorption and the prospect prediction of microbial adsorption of heavy metals in activated sludge are studied, and the focus of the next step of research is put forward to provide conditions for engineering.
Dust monitoring and processing system based on WiFi Mesh network distributed backup routing algorithm
Authors: Zhang Lihui , Ma Xiaolin , Zhang Pei , Guo Zeyu 
Published: March 2021

Abstract
This paper proposes a dust monitoring and processing system using WiFi Mesh network distributed backup routing algorithm. The system is based on WiFi Mesh technology to realize real-time dust data monitoring and dust processing, and transmit the data to MCU and cloud. Users can access the cloud through mobile devices to obtain dust concentration data in the industrial environment. The system uses WiFi Mesh network distributed backup routing algorithm to improve the self-healing of the network system and the stability of the overall system.
Based on Microcontroller Can Only Car Design
Authors: Shi Ting 
Published: March 2021

Abstract
At present, most disinfection methods in indoor scenes use manual spraying and sweeping. The disinfection workers hold watering cans or pesticide sprayers to spray disinfection solutions, which is very inconvenient to use. In this paper, an automatic disinfection car is designed to be used in indoor places such as hospitals, shops, banks, etc, without manual cleaning. Especially during the current COVID-19 epidemic, it effectively realizes the timely disinfection of the public indoor environment, reduces the waste of human resources, protects the cleaning and disinfection staff, and reduces further cross-infection.
Test Comparison and Performance Analysis of Two Kinds of Almonds Shell Kernel Sorting Equipment
Authors: Zhang Li , Bian Bo , Zhou Xin , Yang Huiming , Tuerdi Tuluong 
Published: March 2021

Abstract
In the process of almonds kernel, the separation of shell and kernel is an important part of the processing procedure. Using mechanized shell and kernel separation method to replace traditional manual sorting is the main way to improve production efficiency, reduce labour intensity, and save costs. Draw lessons from the existing nut machinery shell and kernel separation method, shell and kernel separation principle and working characteristics, analyse the separation efficiency of the two types of almonds separating machines, and put forward corresponding suggestions for the future development of almonds shell and kernel separation machinery for the follow-up research and development of Badam kernel and nut separation device and key technology provide technical reference.
Difficulties and Solutions for Public Health Data Governance Under the Normalization of Epidemic Prevention and Control
Authors: Wang Zhiyao , Shi Xiaofang , Li Honglin 
Published: March 2021

Abstract
COVID-19 has become the world’s largest public health emergency in recent years. For the needs of epidemic prevention, governments of various countries encourage public and private institutions to actively use digital technology to carry out joint prevention and control work. The use of data governance to prevent and defuse major risks and improve the ability to respond to public health emergencies is an important part of promoting the modernization of the national governance system and governance capabilities in the new era. This article believes that the establishment of a data security governance mechanism in public health emergencies should be based on application scenarios, with legality as the basic requirement, establish an accountability system, adhere to the principles of transparency, purpose restriction, confidentiality, and minimum necessity, and standardize digital technology design based on this Standards and effective supervision of public health data.
Application of Mid-surface Layer in Asphalt Pavement Tunnel Paving Based on Foam Warm Mix Technology
Authors: Liu Fangtao , Xu Haining , Yang Fei , Yao Aichao 
Published: March 2021

Abstract
With the deepening of the national green transportation policy, the constructi on of environmental protection and energy-saving highway has become the focus of th e industry. Based on the problem of flue gas emission from asphalt pavement tunnel pa vement, the mechanical foaming warm mixing technology is introduced. The foaming characteristics of modified asphalt, the performance of foam warm mix mixture, and th e evaluation of energy consumption and emission reduction of foam warm mix mixtur e are studied and analyzed. The results show that the energy consumption of foam asph alt production is significantly reduced, which has positive demonstration significance f or energy saving and emission reduction in highway construction.
Research on Water Treatment Method Based on Graphene Composites
Authors: Zhang Yihang , Fu Aoran , Guo Jirui 
Published: March 2021

Abstract
In this paper, the graphene material prepared by graphite and zeolite acted together to produce paper cup composite material to adsorb cadmium ion in water. The effects of adsorption time, pH value, the amount of stone composite, the concentration of cadmium ion and sodium ion on the adsorption of cadmium ion were discussed respectively. The results show that the content of cadmium ion in water is the least when the adsorption time is 2h and pH is 5.4. with the increase of the amount of graphene/zeolite composite, the existence of sodium ion will inhibit the adsorption of cadmium ion. The adsorption of cadmium ions commonly used in water treatment was studied in this paper.
Three point bending flexural strength of cemented soil reinforced by PVA and Jute fiber
Authors: Yao Xin , Chang Shiqi , Dong Xiaoqiang 
Published: March 2021

Abstract
In this paper, the flexural and post-cracking performance of deep soil–cement column reinforced by Jute fiber and PVA fiber, respectively were investigated. The results indicates that both Jute and Polyvinyl alcohol fiber significantly improved the first crack flexural strength and peak flexural strength. In addition, the fiber content play a critical role for enhancing the post-cracking performance of specimens, the peak strength ratio, residual flexural strength ratio, ductility index and energy absorption capacity increased with increasing fiber content. Jute fiber group exhibited slightly better in terms of energy absorption capacity.
Application of Metal Composite Materials in Hot Encaustic
Authors: Liao Dajie 
Published: March 2021

Abstract
This paper studies the application methods and skills of adding metal materials (powder, crumb, fiber and solution) into traditional hot encaustic techniques, so as to explore the comprehensive application of various materials and media and enrich artistic expression techniques. In this paper, the feasibility of using metal materials in hot encaustic is affirmed. Individualization of artistic exploration means that artists must improve their artistic language according to their own knowledge and experience structure. In the process of exploring the language of hot encaustic, I try hard to integrate my expression techniques into the picture making mode, so as to achieve a more complete research effect and accumulate experience for future hot encaustic creation.
System Identification of ZnO Nanostructure Based On Physical Field Analysis and Deep Learning
Authors: Hong Jianxiao 
Published: March 2021

Abstract
Zinc oxide nanowire is a widely used one-dimensional nanomaterial. The topological structure of nanowire determines its performance. At present, many researches have made on the growth conditions and structural parameters of zinc oxide nanowires through experimental methods. However, there is a lack of quantitative research on the correlation between macro physical fields and the parameter of structure. In this paper, we propose NPPN (Nanostructure-Parameter Prediction Network) based on deep learning algorithms to explore the correlation between physical fields and nanostructure parameters. The dataset is firstly created by experimental results and CFD simulation. We carry out large batch of preparation experiment of zinc oxide nanowires using the KQS automated machine based on the low-temperature two-step hydrothermal method. Meanwhile, we simulate the real physical field distribution of the reaction chamber through CFD software. The results show that the NPPN model has good predictive performance for the structural parameters of zinc oxide nanowires.