bluuebunny/crossref_metadata_2025_split huggingface dataset:
Mechanical Behavior Study of Bending and Compression of Pineapple Leaf Fiber
Authors: Zhuang Zhikai , Zhang Jin , Lian Wenwei , He Junyan , Huang Tao , Li Mingfu 
Published: March 2020

Abstract
This study aims to provide new-type textile raw materials for the textile industry with pineapple leaf fiber as an example. The bending of pineapple leaf fiber and compressibility of fiber assemblies were tested with JXW03 single fiber compression bending tester and KES-G5 minitype compression apparatus respectively, to study the change rule of bending property of pineapple leaf fiber and represent the compression characteristic curve of fiber assemblies. The results indicate that the values of EB and RB of fiber roots are 6.43GPa and 294.59E-5cN·cm2, and that of the middle segment of fiber are 2.82GPa and 118.17E-5cN·cm2; the mean values of Rc, ΔT and Lc of fiber roots are 57.73%, 4.33 mm and 0.46, and that of the middle segment of fiber are 62.20%, 4.65 mm and 0.43. Anova suggests that there exists highly significant difference in the sampling site in respect of equivalent bending modulus and flexural stiffness of fiber (P<0.01), no significant difference in respect of compressive mechanical indicators of fiber assemblies (P>0.05), the compression-restore curve of fiber roots and that of central assemblies are in the same shape, and they are similar in respect of compression recoverability, besides, the compression curve doesn’t coincide with restoration curve for fibers are of elasticity and viscosity concurrently.
Green Credit Risk Assessment under the Background of Water Ecological Civilization City Construction——Based on BP Neural Network Model
Authors: Fan Xiaohang , Li Qingguo , Xu Zhen 
Published: March 2020

Abstract
The construction of water ecological civilized cities requires a large amount of capital, but at the same time, the project itself has certain risks. Commercial banks are not only the main providers of credit funds, but also the main bearers of project risks. Strengthening the credit risk management of water ecological civilized urban construction projects and enhancing the financial support of commercial banks for water ecological civilized urban construction projects have become the key to further promoting the construction of water ecological civilized cities. At present, the credit risk assessment of commercial banks in China is based on traditional methods, and it is difficult to achieve the desired effect. This paper applies the AHP method to construct the credit risk index system of water conservancy projects, and establishes a credit risk assessment model through BP neural network technology. Finally, it combines 39 listed companies. The data is empirically analyzed for the model to verify the accuracy of the predictions.
Soil and Water Conservation Measures in mountain highway
Authors: Li Hongjun 
Published: March 2020

Abstract
More and more attention should be paid to the soil erosion in the process of highway construction in mountainous areas. According to the characteristics of highway construction in mountainous areas, the methods of combining permanent measures with temporary measures and combining engineering measures with plant measures are adopted to realize soil and water conservation. In the project construction, the establishment of a sound soil and Water Conservation Prevention and control system has achieved good results in the prevention and control of soil erosion.
Environmental impact and economic benefit evaluation of sewage sludge treatment technologies
Authors: Yang Xiyue , Mu Hailin , Zhao Heran , Xue Zhaoquan , Li Nan 
Published: March 2020

Abstract
In order to evaluate the environmental and economic performance of continuous thermal hydrolysis (CTH) of sludge disposal, we compare the CTH with three traditional technologies including anaerobic digestion, aerobic composting and dry-incineration. This study uses life cycle assessment (LCA) to assess their environmental impact of the above technologies, and selects ten characteristic indicators from e-Balance analysis software for quantification. We also adopt the cost-benefit ratio (B/C) to evaluate the technologies’ economic performances, and come to conclusion that the larger the value is, the more economically feasible it will be. The results show that, as a new sludge disposal technology, CTH has the best performance in both environmental and economic aspects, while dry-incineration and anaerobic digestion have the worst results in environmental and economic aspect respectively. Although sludge compost has a moderating effect on global warming, it could also be potentially toxic. Nevertheless, the use of raw materials and energy contributes significantly to the environmental impact of each scheme.
Rapid determination of bisphenol A in environmental water by solid phase extraction-ultra performance convergence chromatography
Authors: Li Genrong , Qiu Yue , Ruan Yan , Long Mei , Xia Zhining 
Published: March 2020

Abstract
A rapid method based on solid phase extraction-ultra performance convergence chromatography was established for the determination of bisphenol A (BPA) in environmental water. The chromatographic conditions and solid phase extraction conditions were investigated, and the rapid and effective analysis of BPA could be achieved in 4 min. The results showed that the method has a good linearity with BPA in the range of 0.20-100 mg/L with correlation coefficient (R2) of 0.9996. Furthermore, the limit of detection (LOD) was 0.01 mg/L. The spiked recovery (R) and relative standard deviation (RSD) were 89.7%∼109.2% and 2.78%∼4.66%, respectively. The method is rapid, simple, accurate and reliable, which can provide technical reference for the detection of BPA in environmental water.
Effects of nitrogen on mineral nutrients and cadmium accumulation in a strain of DSE mycelium under cadmium stress
Authors: Zhang Guangqun , Su Lin , Li Tianguo , Li Ming rui , He Yongmei , Qin Li 
Published: March 2020

Abstract
The dark septate endophytic fungus (DSE) Exophiala pinsciphila was used to study the effect on growth and mineral nutrients (Ca, Mg, N, P, S) and cadmium (Cd) accumulation of DSE under the different nitrogen concentration and cadmium stress (100 mg·L−1). Under cadmium stress, treatment with low nitrogen significantly increased the pH of the mycelium and culture medium, while high nitrogen significantly reduced the mycelium dry weight, the number of spores, and the pH of the culture medium. The minerals in the mycelium were significantly affected by nitrogen concentration; the Ca and P contents were significantly increased under high nitrogen conditions, while Mg and N content decreased significantly. Under normal nitrogen conditions while under cadmium stress, the nitrogen content of the mycelium was significantly decreased, while higher nitrogen significantly increased the cadmium content of the mycelium. The dry weight of DSE mycelium, the mycelium Cd content, and the mycelium Mg content were significantly negatively correlated, along with the dry weight of P and hyphae. Studies have shown that under cadmium stress, exogenously added high concentrations of nitrogen reduce DSE cadmium tolerance, inhibit growth, and cause the absorption and utilization of minerals; in contrast, low concentrations of nitrogen enhance the growth of the strain.
Calculation method of creep under decreasing stress considering variation of natural environmental factors
Authors: Zhao Yu , Wang Yan , Song Chuang , Zhou Yongjun 
Published: March 2020

Abstract
The actual structure is always in the state of natural changing environment and stress decreasing in the section. At present, there is little method for calculating the creep under decreasing stress which takes environmental variation into account. As excessive deflection becomes a serious problem for long span continuous rigid frame bridges during the operation period, in this paper, a creep calculation method is proposed for the continuous decrease of stress in most girder sections, and considers the environmental factors comprehensively. Firstly, the multifactor (temperature, relative humidity and reinforcement ratio) correction was made to creep model of the current code JTG D62. And five creep recovery models were compared and analyzed simultaneously. Based on the elastic creep theory and the superposition principle, the improved creep calculation method was proposed. Then theoretical calculation was carried out for the assumed structure. The results showed that the calculated value obtained by the proposed method were obviously different from those obtained by the code, and were significantly different from those obtained without considering creep recovery, which proves the superiority of the proposed method under the action of multiple environmental factors and decreasing stress.
Diversity and Comparative Evaluation of Fruit Traits of 46 Chinese Cherry Landraces
Authors: Wang Yan , Zhang Jing , Liu Zhenshan , Chen Qing , Yang Shaofeng , Wang Xiaorong 
Published: March 2020

Abstract
Chinese cherry[Cerasus pseudocerasus (Lindl). G. Don], belonging to the genus Cerasus, famliy Rosaceae, is an ancient fruit crop with high economic and ornamental values. Forty-six Chinese cherry landraces from three major distributed regions in China were collected to evaluate the genetic diversity and fruit characteristics. All landraces exhibit rich diversity in main fruit traits, such as peel color, fruit shape and size. The peel shows six different colors with the main color is red and orange-red. The fruit size ranges from to 7.68 mm / 7.52 mm (transverse / longitudinal diameter) to 23.01 mm / 22.99 mm (transverse / longitudinal diameter), with the fruit shape index from 0.77 to 1.16.Thirty-one landraces have more than 2.00 grams per fruit, with the largest being 7.10 grams (LYI6), and the smallest being 0.25 grams (SP8). The total soluble solid content is from 9.52% (ZT2) to 18.56% (SP8) among all landraces. XC4 shows the highest vitamin C content (8.05 mg·100mL−1), followed by BJ7a (7.35 mg·100mL−1) and JN1 (6.57 mg·100mL−1). By comprehensive evaluation, these landraces, LYI3, LYI5, WN2, BJ7, BJ7a, ZWY5, XC4, HC, HF, JY4 and PZB, show good and excellent fruit traits, revealing great potentiality for Chinese cherry breeding program.
Quantitative Evaluation Model of Energy Saving and Emission Reduction Effect of Generation Right Transaction
Authors: Guo Junhong , Xue Xiaoqiang , Li Ling , Xue Lu , Wang Yongli 
Published: March 2020

Abstract
The basic form and the process of power generation trading was introduced, also with the intention declaration model of power generation transaction and the transaction matching model were constructed. Then, a quantitative evaluation model of energy saving and the effect of emission reduction of power generation trading were built. Finally, through the example data of the power generation rights transaction declaration in Anhui province, the validity check results of the power generation rights transaction were analyzed, and the energy conservation and emission reduction effects of power generation rights trading were quantitatively evaluated. The results showed that power generation rights trading had significant energy saving and emission reduction effects, and had certain economic value and environmental protection value.
Corrosion Behavior of Carbon Steel in Carbonated MDEA-MEA Aqueous Solutions
Authors: Yang Junhan 
Published: March 2020

Abstract
In order to deal with the long-term corrosion problems in the absorption of carbon dioxide (CO2) using alkylol amines, perfecting the corrosion parameters is necessary. The tafel curves of carbon steel in carbonated N-methyldiethanolamine (MDEA)-monoethanolamine (MEA) aqueous solutions were investigated by using the CHI602E electrochemical analyzer. Then the corresponding corrosion rates were calculated. The temperatures ranged from 303.2K to 323.2K. The mass fractions of MDEA and MEA respectively ranged from 0.30 to 0.40 and 0-0.10. The CO2 loading ranged from 0.1 to 0.4. The effects of temperatures, mass fractions and CO2 loadings on the corrosion rates were demonstrated. Results showed that corrosion rates increase with increasing temperatures, mass fractions and CO2 loadings. Moreover, the corrosion rates of carbon steel in carbonated MDEA-MEA aqueous solutions are obviously less than the corrosion rates in pure MDEA.
Determination of Nevadensin in Fewflower Lysionotus Herb by Capillary Electrophoresis
Authors: Ren Xiaoyan , Liu Haixing , Wang Jiangang 
Published: March 2020

Abstract
This paper investigated the determination of nevadensin content in Fewflower Lysionotus Herb by high performance capillary electrophoresis (HPCE) method. The borax solution of 30 mmol concentration containing was chosen as buffer solution. The experiment was performed at a constant voltage of 16 kV and UV detection wavelength of 335 nm. The content of nevadensin content in Fewflower Lysionotus Herb was 2.818 mg/g(RSD=3.22%)(n=6). The recovery of nevadensin in Fewflower Lysionotus Herb sample was in the range of 88.1%-105.8% (n=5) This method is suitable for the detection of the content of nevadensin in Fewflower Lysionotus Herb.
Determination of Nevadensin in Malan Ganhan capsules by Capillary Electrophoresis
Authors: Ren Xiaoyan , Wang Jiangang , Liu Haixing 
Published: March 2020

Abstract
The article analyzed nevadensin content in Malan Ganhan capsules by capillary electrophoresis (CE) technology. The electrolyte solution was 30 mmol borax solution with 16 kV voltage and 335 nm UV wavelength. The content of nevadensin in Malan Ganhan capsules was 0.991 mg/g(RSD=3.43%)(n=6). The recovery of nevadensin in Malan Ganhan capsules sample was in the range of 81.7%-100.2% (n=5). The method is simple and practical.
Selection and Study of Pump Type for Caohai ∼ Dianchi Connection Pump Station Project
Authors: Hu Weijuan , Sun Wenzhao , Chen Zhiyu 
Published: March 2020

Abstract
The Caohai-Dianchi Connection Pump Station Project is part of the Dianchi water quality improvement and stability plan. As a connected pump station connecting Caohai and Dianchi, it plays a role in replacing and cleaning Caohai water. In this paper, based on the construction purpose, layout conditions and parameters of connection pump station, the advantages and disadvantages of centrifugal pumps and mixed flow pumps are given after analysis and comparison from the pump selection principles, stable operation, and economic factor, and the final pump type is determined through comprehensive comparison, which can provide reference value for the design of similar pump stations.
Effects of Phytohormone Compatibility on Callus Growth of Rosa rugosa tunb
Authors: Chang Wenbo , Wang Xue , Lan Ying , Wang Meini , Wen Bin , Li Lan 
Published: March 2020

Abstract
To obtain superior quality callus and to regenerate root system of Rosa rugosa tunb and improve culture efficiency, this experiment used a multi-factor orthogonal test method to establish a sterile system with young leaves of R. rugosa tunb as experimental materialsand different concentrations of hormones in each stage. Explore the effects of plant callus growth. The results showed that the optimal disinfection method of explants was 70% alcohol 30s+0.1% HgCl2 8min. At this time, the browning rate was 46.70%, and the infection rate was 10.00%, which was 14.40% and 72.67% lower than that before disinfection. [Primary medium]: MS+1.5 mg/L 6-BA+3.0 mg/L NAA+3% sucrose+0.9% agar, the induction rate at this time is 75.00%, an increase of 62.50% compared with no added hormone. [Proliferation medium] MS+2.0mg/L 6-BA+0.2mg/L NAA+3% sucrose+0.9% agar, the callus diameter reached 2.49cm after proliferation, the growth was strong, and the callus was highly available. [Rooting medium] MS+0.4mg/L IBA+0.5g/L AC+3% sucrose+ 0.9% agar, the rooting rate is 75.00%, the root system is long and the growth is robust.
Intervention of Nitrogen Evolution on Species Diversity of Broad-leaved Forest Plants in Xianweng Mountain
Authors: Chang Wenbo , Sun Yanbin , Shen Penglin , Chen Qingsong , Miao Tianlin , Li Lan 
Published: March 2020

Abstract
Nitrogen evolution is one of the important factors driving biodiversity change. It is generally believed that the species diversity structure will be changed, and under the conditions of exogenous nitrogen addition, grasses and deciduous shrubs have a competitive advantage over hybrid grasses and evergreen shrubs. For the competition between plants in the same life type, the interaction between different life-type plants is not involved. Therefore, from the changes in forest ecosystem structure and nitrogen elements, the response of different life-type plants to nitrogen evolution can be further explored. The lower plant species of the deciduous broad-leaved forest-Mongolian carp are studied, and different gradients of nitrogen (0, 40, 80, 120 kg N·ha−1·yr−1) are added to the four gradients of extraneous nitrogen effects of nitrogen evolution on forest biodiversity in the north temperate zone. The results of five-year continuous nitrogen addition experiments showed that nitrogen addition significantly reduced the species richness and diversity of understory plants, and changed the species composition of the community. Nitrogen addition increased the species richness of shrub plants and diversity, reduced the richness of herbaceous plants, and reduced the important value of grasses and increased the important value of hybrid grasses. The study showed that long-term nitrogen addition significantly changed the species composition of understory plants, and the response of different life-type plants to nitrogen addition was also different.
Impact of Garden Plant Resources Allocation on Ecological Landscape in Cold Cities
Authors: Yang Tianqi , Gu Ye , Sun Yanbin , Wang Changbao , Cheng Haitao , Li Shengju , Li Lan 
Published: March 2020

Abstract
This paper analyzes the distribution of plant resources in the test plots, and aims to optimize the allocation of plants and improve the follow-up construction plan for the cold land ecological park. We provide basis and reference for plant species selection and diversification in the construction of cold land urban Greenland plant landscape, and further improve the urban environment. Taking Jiamusi City as an example, the plant species, ecological distribution and utilization of plant resources in Jiamusi City Park were investigated and investigated by sample method and field investigation method. The data were analyzed by the analytic hierarchy process, and the ornamental value of the regional plants was analyzed. According to the survey, there are 41 species of plants in the park in Jiamusi City, belonging to 15 families and 35 genera. Their use involves three aspects, such as edible medicinal, and has high application value. As a typical cold city, Jiamusi proposes to consider the concept of ecological balance and sustainable development while considering the ornamental nature of plant resources, to play a role in supporting the image of the city.
Explore the designated frequency band (EMF) effect of radiation on biological characteristics of Ocimum basilicum
Authors: Zhang Yaosheng , Ren Guoli , Zhang Wu , Yang Jiali , Wang Xue , Chu Yi , Li Lan 
Published: March 2020

Abstract
Explore and obtain the effects of irradiated Ocimum basilicum seeds on the biological mechanisms of germination and seedling growth in the specified frequency bands. In the experiment, two influencing factors of the specified frequency band and irradiation time were set, and different gradients of irradiated seeds were set. Non-magnetized treatment was used as a blank control group (CK) to determine the changes in the main chemical components in seeds and seedlings, and explore the radiation breeding biology mechanism. The results showed that 90 kHz-100 kHz had a significant inhibitory effect on seed germination, and the 50 kHz-70 kHz band had a significant effect on the germination of Ocimum basilicum, with 50 ± 2.0 kHz being the best. In the time gradient exploration, the main chemical content of seeds was the highest when irradiated for 20 min, and the growth effect of seedlings was the best. The specified frequency band (EMF) has the effect of promoting and inhibiting the germination and growth of basil. It stimulates the internal chemical composition to break the dormancy period of the seed, accelerates the anabolism, and increases the molecular assimilation of the building.
Research on resource and environment evaluation of Qaidam Circular Economy Experimental Zone
Authors: Cai Wenjiao , Li Na , Wang Jianjun 
Published: March 2020

Abstract
China’s economy is growing rapidly, and the demand for resources and its dependence on foreign countries continue to increase. Exploring the status quo between the regional economy, resource utilization, and environmental protection will improve economic development while protecting the environment and become sustainable development. This paper uses the economic data, “three wastes” emission data, enterprise resource data, and social resource data on the Qaidam Circular Economy ExperimentalZone from 2005 to 2017, and uses the entropy weight method to weight the data and then uses the comprehensive evaluation method to evaluate the data. According to the current situation, it is concluded that the industrialized and green development of the experimental zone has achieved remarkable results, and the management and control of the experimental zone management committee is crucial to the development of the experimental zone.
An experimental study on hydrometallurgical process for the separation of lead in waste CRTs funnel glass
Authors: Yin Jin , Li Shuo , Zhao Lei , Xu Tong , Zhang Zhilin , Tang Wenjie 
Published: March 2020

Abstract
Waste CRTs display funnel glass contains a lot of lead, and improper disposalof waste CRTs funnel glass is easy to cause greater environmental risks. Three extraction systems of citric acid/sodium citrate, EDTA-2Na, and citric acid/sodium citrate/EDTA-2Na were used to leach the lead in waste CRTsfunnel glass. The effect of extraction rate for three extraction systems was investigated. The results showed that the effect of the extraction systems of citric acid/sodium citrate/EDTA-2Na to leaching the lead in waste CRTs could reach more than 80%, which provides a way for the green treatment of waste CRTs.
Study on the Characteristics of Pyrolysis Gas and Oil from Corn Stalk Pyrolysis
Authors: Sun Yang , Fan Sichen , Yang Tianhua , Zhang Haijun , Chen Yongsheng 
Published: March 2020

Abstract
In this paper, stem-skins, stem-pith, stem-leaves of corn stalks were separated and pyrolyzed to produce pyrolysis gas and oil on the temperature-controlled slide tube furnace. The gas yield, the gas component and the oil-producing rate of the skins, pith and leaves of corn stalkspyrolysis were studied under the different pyrolysis temperatures and residence time. The results show that the pyrolysis gas yield and the oil production rate wereeffected significantlyby the temperature. With the increase of pyrolysis temperature, the gas yield of the skins, pith and leaves of corn stalks increased, while the oil production rate decreased. The maximum pyrolysis gas yield isthestem-leaves, the second is the stem-pith, andthestem-skin was the smallest. When the temperature increased from 550 °C to 750 °C, the content of CO and H2increased with the increase of temperature, while the content of CO2 in pyrolysis gas decreased. The contents of C2H4and C2H6did not change obviously, and the total content was about 2%. When thepyrolysis residence time was extended from 10 min to 60 min at 650 °C, the pyrolysis gas production rate of biomass increased gradually. When residence time was 10min and 60min, the gas production rate of the stem-skin was 34.32% and 38.92%, respectively. The component of the gaseous product is affected by the residence time, while the effect of oil yield is not significant.