bluuebunny/crossref_metadata_2025 huggingface dataset:
Effect of the thermal insulation wall under the air-conditioning intermittent operation
Authors: Yuan Meng , Huang Yisheng , He Jiayi , Li Jialun , Xu Ruochen , Hu Wentao , Hou Chaoping
Published: September 2019

With the increasing energy consumption, the status of building energy conservation is paid more and more attention. So how to reduce the energy consumption of envelope becomes a hot spot. Self-insulation wall behaves greatly in energy saving, and this paper proposes a self-insulation wall which is filled Expanding Polystyrene(EPS) into the cavities of the sintered shale bricks with different ration. Besides, the condition of intermittent operation of air conditioner in winter is simulated. The results showed that temperature of the wall increased significantly after filling the EPS, and the wall had a good thermal insulation performance. The thermal insulation wall with 50% EPS is recommended, no matter from the aspect of the economy or of thermal physics. Moreover, intermittent operation which is 1 hour interval and 1 hour working was the idealist mode, because the wall performed the best capacity of insulation under this condition.
Study on the Temporal and Spatial Pattern Differences of Chinese Light Curl Based on DMSP/OLS
Authors: Wang Xiaowei , Cheng Hui
Published: September 2019

Nighttime light data can detect surface gleams that can intuitively reflect human socioeconomic activity. This paper uses the DMSP/OLS nighttime lighting data from 2001 to 2007 to analyze the coupling relationship between regional economic development and nighttime light intensity in China using regression model. The results show that the brightest areas of nighttime light are mainly concentrated in the Beijing-Tianjin-Hebei region, the Yangtze River Delta region, and the Pearl River Delta region. With the change of the year, the brightness of the three regions is brighter year by year, indicating that the economy is more and more developed. The linear regression model of total brightness and GDP of regional light: Y=792.218+0.024X, linear slope is 0.024, indicating a positive correlation trend. The provinces and cities with the highest total brightness of the provinces and cities are Guangdong Province, Shandong Province, and Jiangsu Province, and the lowest provinces and cities are Qinghai Province and Tibet Autonomous Region. The total brightness of regional lights in China’s provinces and cities is well coupled with GDP. The total brightness of regional lights in all provinces and cities is weakened from east to west. The brightness of the 11 provinces in the eastern region is the strongest, including Beijing, Tianjin, Hebei, Liaoning, Shanghai, and Jiangsu, Zhejiang, Fujian, Shandong, Guangdong, Hainan Province. The second most powerful lighting is the eight provinces in the central region including Shanxi, Jilin, Heilongjiang, Anhui, Jiangxi, Henan, Hubei, and Hunan. The weakest lighting is in the western regions of Sichuan, Chongqing, Guizhou, Yunnan, Tibet, Shaanxi, Gansu, Qinghai, Ningxia, Xinjiang, Guangxi, Inner Mongolia and other provinces (cities). In the east of the Hu Huanyong line, the nighttime lighting is higher than the west of the Hu Huanyong line. The eastern part of China’s seven geographical divisions (Shanghai, Jiangsu, Zhejiang, Anhui, Jiangxi, Shandong, Fujian, and Taiwan) has the brightest night lights. The northwestern region (Shaanxi, Gansu, Qinghai, Ningxia Hui Autonomous Region, Xinjiang Uygur Autonomous Region, and Inner Mongolia Autonomous Region) has a weak night light. The brightness information of nighttime remote sensing data selected in this study can reflect the level of regional economic development.
Solving Poisson’s Ratio of Single-Layer Composites Acted by Normal Force with Interface Non-Slip Condition
Authors: Li Yanru , Wang Liqiang , Jiang Haibo
Published: September 2019

In this paper, the stress of the interface between the reinforcement and the matrix of composite is analyzed. According to the basic characteristics that the interface does not slip, the strains of the reinforcement and the matrix along the interface are assumed to be equal. The Poisson’s ratio calculation formula of the single-layer composite acted by normal force is derived. The research indicates that the interface non-silip of the laminate is the basic feature of the composite. Based on this, the elastic properties of the laminate acted by normal force can be directly calculated and analyzed by equal-strain equations; The Poisson’s ratio is not only a function of the Poisson’s ratio and volume fraction of the reinforcement and the matrix, but also a function of the ratio of the elastic modulus of the reinforcement to the elastic modulus of the matrix, but the size of Poisson’s ratio is independent of the size and shape of the reinforcement and matrix.
Comparative Study on Test Methods of Total Coliforms in Domestic Drinking Water
Authors: Shen Qiuhua , Wang Xiaojie , Chen Enfeng , Ma Zhenchao
Published: September 2019

Total coliforms are a group of facultative anaerobic Gram-negative sporeless bacteria that can ferment lactose, produce acid and gas, requiring oxygen. In this paper, it adopts three methods namely multi-tube fermentation method, membrane filter method and paper strip method to make analytic comparison on the total coliforms in drinking water. It also makes comparative study from aspects, i.e. test principle and procedure, scope of application and test result, discusses the advantages and disadvantages of the three methods. According to the result, compared with the traditional fermentation method and the membrane filter method, the paper strip method has the advantages such as simple operation, short test time and high accuracy, etc.
Erosion Characteristics of Electroless Deposited Ni-Fe-P Al-loys in 5% NaOH Slurry
Authors: Cheng Zhengcui , Zhu Shaofeng , Li Yixian
Published: September 2019

Amorphous Ni-Fe-P alloy coating was prepared on thecopper substrate by electroless deposition. Silicon carbide particles were added into the suspension containing 5wt% NaOH to carry out erosion experiments on the coatings with the self-made erosion tester. The experimental results show that, due to the corrosion of the solution on the coating and the impact of SiC particles on the corrosion film and matrix metal, the maximum loss of coating quality occurs when the SiC particle size is 120 μιη at different impact angles. With the increase of impact angle, the mass loss of coating tends to increase. With the increase oftheslurry flow rate, the mass loss of coating increases.
Recovery of Polyols from Polyurethane Foam Wastes by Solvent Decomposition
Authors: Li Qi , Xu Weitao , Xi Enhua , Pang Yanfang , Liu Xiaosheng , Mao An
Published: September 2019

The objective of this study was to investigate the feasibility of recovering the polyols from the polyurethane (PU) foam wastes obtained from automobile shredder residue (ASR) by chemical decomposition using the diethylene glycol (DEG) as the decomposing solvent and sodium hydroxide (NaOH) as the catalyst, respectively. The effects of temperature (180 °C and 210 °C), time (0.5, 1, 1.5, 2, 2.5, and 3 hours), and DEG/FPU weight ratio (2:1, 3:1, and 4:1) on the decomposition reaction and the properties of the recovered polyols were investigated. Higher temperature and DEG/FPU weight ratio promoted the FPU decomposition reaction and resulted in lower viscosity, higher hydroxyl number, and higher amine number of the recovered polyols. The hydroxyl number and amine number increased as the reaction progressed, while the viscosity decreased. Once the reaction was completed, little change was observed for the hydroxyl number and viscosity of the recovered polyols. The recovered polyol obtained at 210 °C and DEG/FPU weight ratio of 3:1 showed about the same length of time for the reaction, as well as the physical properties to that obtained at 180 °C and DEG/FPU weight ratio of 4:1.
NOx storage and reduction on Pt-supported BaTiO3 with alkali washing
Authors: Han Zengyan , Zheng Dechao , Xin Ying , Li Qian , Zhang NaNa , Zhang Zhaoliang
Published: September 2019

In this paper, we prepared Pt/BaTiO3-x
catalyst through modified the surface of BaTiO3 perovskite by NaOH aqueous solution and loaded Pt by incipient wetness impregnation method. A series of characterization techniques including XRD, BET and in situ IR was conducted to investigate the physical and chemical properties. We found that NO
x
storage capacity of the catalyst was significantly improved as the sample was washed in alkali for 2 h, meanwhile NO
x
conversion was optimal. The surface of the catalyst was modified by alkali washing process, and then Pt was loaded. Further calcination could enhance the interaction between Pt and Ba, which facilitate the formation of a reactive nitrite species during the adsorption process, thus increasing NO
x
storage reduction (NSR) activity.
Experimental Study on Catalytic Reduction of SO2 by Rare Earth Compound in the Presence of Oxygen
Authors: Du Zhehua , Lin Xin
Published: September 2019

Compared with a great deal of traditional desulphurization crafts, the catalytic reduction of SO2 with CO to elemental sulfur is considered to be the best technology for the removal of CO2 from flue gas. Adding rare earth oxide CeO2 with variable valences to La2O3formes a mixture of rare earth oxides. By means of dipping CeO2, La2O3 and their mixture, whose carriers are allγ-Al2O3, are used as the catalyst for the reduction of CO2 by CO. Under the condition of oxygen, all kinds of catalyst will be poisoned to some extent. However, the oxygen resistance of the catalyst can be improved by changing the composition of the catalyst. It is found through experiments that this poisoning effect is partially reversible. The structure of the catalyst is not completely destroyed. There is still a great distance from the actual application.
A review of interspecies electron transfer in anaerobic digestion
Authors: Zhang Mingyuan , Zang Lihua
Published: September 2019

Anaerobic digestion (AD) is an effective way to recover energy from organic waste. About 70% of the methane emitted into the atmosphere is derived from the degradation of organic matter by microorganisms under anaerobic conditions. Interspecies electron transfer (IET) is the key link of syntrophic methanogenesis, an in-depth understanding of IET during AD contributes to the rational use of energy. IET mainly includes three modes, namely, interspecies hydrogen transfer (IHT), interspecies formate transfer (IFT) and interspecies direct electron transfer (DIET). This review summarized and analyzed the IET patterns in the AD process, and related metabolic mechanisms and existing studies were explained.
Synthesis and performance of sodium salt of MAA/St/SAS copolymer dispersant
Authors: Tian Qingmei , Zhang Qiang
Published: September 2019

A new type of dispersant for pesticide water dispersible granules (WDGs), sodium salt of methacrylic acid/styrene/sodium allylsulfonate copolymer (SMSA) was synthesized. 90 wt% atrazine WDG was prepared to evaluate the dispersion performances of SMSA. It is found that SMSA has high performance and strong resistance to hard water, and the suspensibility of 90 wt% atrazine WDG before and after hot storage could reach 93.14% and 92.22% in standard hard water, and 87.19% and 85.33% in three-fold standard hard water, respectively.
Effect of Welding Process on Ultrasonic Testing of 9Ni Steel Weld Joint
Authors: Yannan Du , Xuchen Zhu , Weiping Zhu , Xiaoying Tang , Xiaolong Xue , Ju Ding
Published: September 2019

In the world, 9Ni steel with the relatively low price, high strength, low temperature toughness and safety reliability has become the principal material of LNG storage tanks. The presence of coarse-grained microstructures in the weld microstructure has a substantial impact on the ultrasonic testing of the weld. Therefore, an excellent 9Ni steel ultrasonic testing technology is realized for a suitable welding process.
Effects of Living Pterocypsela laciniata and Its Straw on Phosphorus Uptake of Grape Seedlings under Selenium Stress
Authors: Wang Jun , Liu Xingwang , Wang Tie , Yang Liu , Liao Ming’an , Lin Lijin
Published: September 2019

Based on the selenium stress, the effects of living Pterocypsela laciniata and its straws on phosphorus (P) uptake of grape seedlings were carried out. There were some important results and showed that in parts of grape seedlings. The total P content was lower in roots than that in stems, leaves and shoot. Among five treatments, there was quite different about the total P content. Compared to grape seedlings monoculture, living P. laciniata and its straws could significantly increase the total P content in parts of grape seedlings. Among them, applying the leaf straw of P. laciniata in soil made the total P content the highest. For the total P content in root, stem, leaf and shoot of grape seedlings, it was always ordered from high to low: PLG > PG > PRG > PSG > MG. The available P content in soil was a little changed in relation to the total P content in plants. Applying P. laciniata straws also could increase the available P content. On the contrary, grape seedlings intercropping with P. laciniata seedlings decreased the available content, compared to the monoculture. In a word, living P. laciniata and its straws was good for the growth of grape seedlings and improved the P uptake in plants.
Summary of Research Status of Concrete Filled Steel Tubular Truss Structure
Authors: Xie Xinying , Ma Xingzi , Cai Jingwei , Jin Yujie
Published: September 2019

With the development trend of industrialization of building, truss structure is more and more widely used as a simple force structure in engineering applications because of its advantages of light weight, large span, low steel consumption and so on. The key to improve the overall stability, ultimate bearing capacity and seismic performance is to make use of the mechanical advantages of the new materials. This paper expounds the characteristics of concrete-filled steel tubular trusses, introduces its application in bridge engineering and building roof structure, and systematically summarizes the design theories and research results in the field of truss at home and abroad. The feasibility of a new epoxy resin concrete material in the application of concrete-filled steel tubular truss is discussed, and further research work is expected.
Study on Improvement Effect of Saline-alkali Soil by Cationic Modified Biochar
Authors: Yuanchengpeng  , Cai Chen , Cuijingwen
Published: September 2019

The severe soda-alkali soil in the western Songnen Plain was used as the experimental object. Compared with the application of common biochar, the effects of modified biochar on the basic physical and chemical properties, agglomerate distribution, organic carbon and total nitrogen distribution of saline-alkali soil were analyzed. The experiment adopts the indoor culture method, and the use of common biochar (B) and iron modified biochar and calcium modified biochar is 0, 1.5%, 5% . A total of 7 treatments: CK, B1.5, B5, FBS1.5, FBS5, CBS1.5, CBS5. The results show: 1. Modified biochar significantly reduced soil pH with a maximum reduction of 12.2%. Both biochar and modified biochar significantly reduce soil ESP. The reduction effect of FB5 was the most significant in each treatment, which was 58.2% lower than CK, followed by FB5, which was 41.8% lower than CK. The introduction of cations and the significant reduction of ESP showed strong Na+ substitution and adsorption capacity, thereby alleviating soil salt accumulation and improving soil basic physical and chemical properties. 2. Both modified biochar and ordinary biochar increased the content of soil microaggregates (0.053-0.25mm). The modified biochar was significantly higher than ordinary biochar, and the function of improving soil structural stability was stronger. Among them, CBS improvement effect is better than FBS. The ratio of CBS5 treatment increased the microaggregate to the highest, with an increase of 66.4%; the increase of CBS1.5 treatment was 56.2%; the proportion of FBS5 and FBS1.5 microaggregates increased by 51.1% and 32.2% respectively. The geometric mean diameter (GMD) of all treatments was higher than that of CK treatment, in which CBS5 treatment significantly increased GMD by 18.6%; modified biochar treatment increased mean weight diameter (MWD), of which CBS5 significantly improved MWD. The increase was 8.8%.
Preparation of bamboo-like carbon nanotubes by the reaction of cobaltocene and methanol
Authors: Tang Yan , Luo Wei , Liu Gangfeng , Zhu Shanhe
Published: September 2019

Carbon nanotubes have been prepared by the reaction of cobaltocene and methanol at 500 °C. FESEM, TEM and HRTEM observations show the carbon nanotubes with bamboolike structure. These nanotubes are made up of separated hollow compartments and bamboo knots which grow straight along the axis. The bamboo knots are spaced at nearly equal separation of 25 nm for an about 60 nm diameter nanotube. The possible growth mechanism for CNTs is proposed.
Analysis of Time Scale Algorithm in Satellite Autonomous Navigation Mode
Authors: Peng Jian-hang , Wang Xiang-lei , Fang Jian-min , Wang Zhi-ping
Published: September 2019

Using satellite clock to establish and maintain constellation reference time datum is the basis of satellite autonomous navigation, reference time Datum algorithm is the core of realization, the paper first elaborated the commonly used time scale algorithm: ALGOS algorithm and Kalman algorithm, ALGOS is the most commonly used reference time Datum algorithm in the world, The Kalman algorithm can assign weights dynamically, but there are some disadvantages of slow convergence speed. Based on the analysis of the computational complexity, traffic requirements and algorithm convergence of the reference time Datum algorithm in the space satellite environment, the experimental results show that it takes 3 minutes for the ALGOS algorithm to complete 1 reference time datum calculation, the communication volume is about 398kb, and the algorithm converges about 6-9 seconds. The Power acquisition strategy is the most core part of the reference time algorithm, the paper finally gives the experimental analysis to the different power acquisition strategy, the results show that, from the stability point of view, the short stability of the 12-hour power calculation is better than the short stability of the calculation of 5 days of right, but its instability is slightly lower than that of 1 days and 5 days.
Effects of Different Selenium Concentrations on Photosynthetic Physiology of Grape Seedlings
Authors: Chen Hongqiang , Liu Lei , Lin Lijin , Liao Ming’an , Lv Xiulan
Published: September 2019

A hydroponic experiment was conducted to study the effects of different concentrations of selenium (0.00, 0.05, 0.10, 0.25, 0.50, 1.00, 2.00 mg/L) on photosynthetic physiology of grape seedlings. The result showed that the selenium concentration of 0.05 mg/L could significantly improve the chlorophyll a, chlorophyll b, carotenoid and total chlorophyll of grape seedlings, while the chlorophyll content reduced significantly when the concentration was 1.00 mg/L and 2.00 mg/L. Besides, the net photosynthetic rate (Pn), stomatal conductance (Gs), CO2 concentration of intercellular (Ci) and transpiration rate (Tr) of grape seedlings all significantly increased at 0.05 mg/L, while the Pn, Gs, Ci and Tr of grape seedlings reduced significantly when the concentration was 1.00 mg/L and 2.00 mg/L. Therefore, the selenium concentration of 0.05 mg/L concentration was beneficial to photosynthesis.
Dynamic treads of soil chemical properties in citrus planting soil
Authors: Gou Tingyu , Huang Jinqiu , Wang Zhihui , Wang Xun
Published: September 2019

In this experiment, potassium sulfate and monopotassium phosphate were used as the potassium source. Three potassium amount levels (31.96 g, 37.36 g and 48.16 g) were set. The urea and monopotassium phosphate were applied respectively as nitrogen and phosphate sources. The fertilizers were applied from March to July, and soil samples were collected before, during and after fertilization. Three-year-old of hybrid citrus variety ‘Kiyomi’ trees were the plant materials. The results showed that 48.16 g potassium was the optimum amount to improve the soil fertility by enhancing the content of alkaline nitrogen, available potassium and organic matter.
Establishment and Application of Ecological Suitability Evaluation System for Highway Route Selection of Subtropical Mountains
Authors: Wang Zhaoming , Wang Chao , Zhang Dong , Ni Dong , Yuan Minmin
Published: September 2019

Subtropical mountains area Landsat8 satellite Tm images were used as information sources, RS technology was used to extract vegetation coverage, soil erosion and land use type for the evaluation of ecological background condition, and the GIS software was utilized to extract indices of terrain slope and water environment. Based on the indicators above, with GIS analysis techniques, comprehensive evaluation and analysis of the ecological background the subtropical mountains area were conducted, subtropical mountains ecological background conditions could be classified as excellent, good, fair, poor and very poor level. Based on the overall distribution and evaluation route corridors with relatively some feasible routes, and possible route options were compared to ultimately determine the best route with environmental coordination. The results show that the method overcomes the limitations of traditional line selection method which is too dependent on designers experience and subjective judgement.
Mechanism Analysis and Countermeasures on Environmental Problem Caused by Furniture Industry Transfer
Authors: Weixia-Gao
Published: September 2019

This paper described the environmental problems caused by the furniture industry transfer. Through the mechanism analysis on the cause of environmental problems, it put forward the countermeasures to improve.
The Application of Machine Learning Models in Fetal State Auto-Classification Based on Cardiotocograms
Authors: Xue Gongao
Published: September 2019

Cardiotocography (CTG) is widely used by obstetricians in accessing the physical condition of a fetus during pregnancy, for it provides obstetricians with the data regarding the fetal heartbeat and the uterine contractions which helps determine whether the fetus is pathologic or not. Traditionally obstetricians analyze data from CTG artificially, which is both time consuming and lack of reliability. For this reason, developing a fetal state auto-classification model is necessary, for it can not only reduce the time for diagnosing but also save medical resources. With machine learning developing rapidly nowadays, it has been widely applied in areas like biology and medicine to solve various problems. In the condition of fetal state classification, we apply neural network and random forest to analyze the cardiotocographic data from the UCI Repository. Since there is high imbalance in our data, method of weighing has also been applied to optimize our model. Random forest outperforms neural network in terms of accuracy in classifying types of fetuses, which achieves 88.84% and 91.85% accuracy on the training and testing set respectively.
Study on Exogenous Influencing Factors of Green Agricultural Plant Production Technology
Authors: Zhou Ying , Li Qi , Luo Le , Mao An
Published: September 2019

The production efficiency of green agricultural plants is an important criterion for assessing the economic and environmental benefits of agricultural production. The improvement of production efficiency of green agricultural products is an important issue that needs to be studied urgently. Based on the survey data of farm agricultural product cultivation in Shandong province, the non-parametric DEA (data envelopment analysis) method and model were used as the basis for discussion. A green agricultural grain production benefit evaluation standard system was established. The Malmquist coefficient analysis method was used comprehensively, and the DEAP2.1 software was used to study the changes of green crop production efficiency, and the key factors affecting the change of green agricultural production efficiency were analysed through comprehensive index evaluation.
Study on isolation, identification and colonization ability of antagonistic bacterium M39 against pomegranate wilt pathogen
Authors: Yinli Zhou , Jianwei Guo , Wei Yang , Jianbo Bai , qiong Kong , Xianqi Hu
Published: September 2019

In this study, the bacteria with strong antagonistic activity against pomegranate wilt pathogen were isolated and screened from the soil samples collected from Yunnan Jianshui Pomegranate Garden and Mengzi Pomegranate Garden. The indoor inhibition rate of bacterial strain M39 against pomegranate wilt pathogen was 81.17%. The study showed that strain M39 could be stably colonized in the rhizosphere of pomegranate, which had potential biological control value. Based on the cultural characteristics of strain M39, colony morphology observation, physiological and biochemical characteristics analysis (Biolog system), strain M39 was initially identified as Corynebacterium freneyi.
Applying the Ozone Water Spraying for Inactivating E. Coli bioaerosols
Authors: Huang Hsiao-Chien , Huang Hsiao-Li , Hsu Ying-Fang , Yang Shinhao
Published: September 2019

This work applied ozone water spraying to explore the feasibility of inactivating bioaerosol. The inactivating efficiency using ozone water (OW) spraying individually against airborne strains Escherichia coli (E. coli) bioaerosols was evaluated in the testing chamber. The setting air exchanged rate (ACH) in this work were 0.5 and 1.0 h−1. The OW operating concentration of 0.5 and 1.0 ppm were sprayed into the testing chamber for inactivating bioaerosols, respectively. Higher OW spraying concentration showed better inactivating results. The inactivation constant of E.Coli against WO 0.5 and 1.0 ppm spraying under ACH 1.0 h−1 was 0.236 and 0.435 (min−1). Moreover, the bioaerosol removal efficiency would increase with ACH. The inactivation decay coefficient of WO 1.0 ppm spraying against E.Coli was 0.312 and 0.435 (min−1) under ACH 1.0 and 0.5 h−1. The results demonstrated that the WO spraying technology was effective in inactivating bioaerosols.
Multiple regression analysis based on carbon emissions from aviation logistics in Henan Province
Authors: Lyu Sujia , Zhu Wei , Wang Xiaojuan , Xu Ling
Published: September 2019

In this paper, we analyze the relationship of carbon emission from aviation logistics with the added value of Henan Province’s transportation, warehousing, post, and telecommunications industry and the total population of Henan Province from 1997 to 2015. First, we calculate the energy consumption of four types of energy (fuel, gasoline, kerosene and fuel oil) to obtain the carbon emissions of four types of energy. Second, we obtain the estimated energy consumption of aviation logistics in Henan Province through the analysis of the proportion of air cargo. Through analysis, we find that the added value of the transportation, warehousing, post, and telecommunications industry in Henan Province and the total population of Henan Province plays a strong role in promoting the carbon emissions of Henan Province’s aviation logistics. Among them, the influence of the added value of the transportation, warehousing, and postal and telecommunications industries in Henan Province is relatively strong.
Effects of Grafting on Total Phosphorus Content in Post Generations of Cyphomandra betacea Seedlings
Authors: Wei Yuzhi , Yang Liu , Liao Ming’an , Li Hongyan , Lin Lijin
Published: September 2019

The effects of eggplant, Solanum nigrum and tomato as rootstocks on the total phosphorus content in the grafted offspring of Cyphomandra betacea seedlings were studied by pot experiment. The total phosphorus contents in root, stem, leaf and shoot of the offspring of C. betacea seedlings were analyzed. The results showed that the total phosphorus content in the roots and shoots of S. nigrum rootstock was significantly higher than that of ungrafted offspring. There was no significant difference in the total phosphorus content between roots and stems of eggplant and tomato rootstocks compared with ungrafted offspring. The total phosphorus contents in the leaves and shoots were significantly lower than that in ungrafted offspring. Therefore, proper selection of grafted stock can improve the total phosphorus uptake of grafted offspring of C. betacea seedlings.
Research on the social responsibility of China’s inspection body and laboratory
Authors: Zhao Weiwei , Ye Ruyi
Published: September 2019

As a modern high-tech service industry, inspection and testing is a necessary link to ensure the safe operation of industry and the promotion of product quality. It plays a technical support for continuously improving the quality and efficiency of economic development. At present, inspection and testing has become one of the most dynamic and emerging service, but in the process of rapid development, there are also some problems. Some inspection body and laboratory use their power to seek rent or put legal coat on illegal products, resulting in lack of justice, aggravating moral hazard, disrupting the fair order of the whole inspection and testing market, and harming consumers’ rights and interests, such as Sanlu group added melamine to milk power, Volkswagen played tricks on carbon dioxide emissions testing. This essay analyzes the problems existing in the social responsibility of China’s inspection body and laboratory at present, and puts forward some suggestions. On the basis of adopting the international social responsibility standard ISO 26000, the essay puts forward some suggestions on how the inspection body and laboratory fulfill the social responsibility on the responsibility management, pollution prevention, truth and accuracy of data, scientist’s social responsibility and so on.
Effects of Phenanthrene on the key processes and functional genes of denitrification in sediments of Jiaozhou Bay
Authors: Li Kuiran , Bai Xiaoyan , Bai Jie , Sun Pengfei , Tian Yanzhao
Published: September 2019

Polycyclic Aromatic Hydrocarbons (PAHs) will combine with the particulate matter and settle in the sediments, which will influence the denitrification process. The study chooses the Dagu River estuary and the bay area of the northwest of the Jiaozhou Bay as sampling sites, and select Phenanthrene (Phe), the model compound of PAHs as a pollutant. The concentrations of Phe are 0mg/kg, 50mg/kg and 500mg/kg. The impact of Phe on nitrate reduction ability, nitrite reduction ability, related enzyme activity, and relative abundance of functional genes are explored. The results showed that in Jiaozhou Bay and Dagu River estuary Phe had a markedly effect on nitrate reduction, nitrite accumulation, nitrate reductase activity and nitrite reductase activity. The relative abundance of narG and nirS genes were markedly affected by Phe, and the inhibitory effect was enhanced with the increase of concentration. Compared with Jiaozhou Bay, the reduction of nitrate and nitrite in the Dagu River estuary are more sensitive to the pollution of Phe.
Study on risk assessment method of Karst collapse—Taking the Karst collapse in Linyi urban areas as an example
Authors: Chun-mei Yao , Fang Yuan , Fan-qi Meng , Quan-cheng Yang , Ji-cheng Shan
Published: September 2019

Karst collapse is one of main important geological disasters in Linyi city of Shandong Province. In this article, risk assessment of present and forecast situation of karst collapse have been done by the method of fuzzy comprehensive evaluation based on level analysis at the first time. The hazardous assessment, the vulnerability and the expected loss have been assessed, and then the risk assessment map of karst collapse at present is obtained and prevention and control work of karst collapse is expected to develop. It puts up availability exploration on prevention of the same geohazards, and provides a reference pattern.
Investigation on Current Status of Rice Fertilization in the Plain Area of Hanzhong Basin
Authors: Wei Yang
Published: September 2019

Scientific fertilization is the key to obtain a high-yield and good quality rice. In order to understand the present situation of rice fertilizer application in the Plain Area of Hanzhong Basin, a survey had been conducted. The investigation results showed that: in the Plain Area of Hanzhong Basin, N application was more higher, P2O5 application was reasonable and K2O application was a little lower. Fertilization was very unbalanced and the application rates were quite different among farmers. The base to dressing ratio was unreasonable. All the P2O5, K2O and most of N were applied as base fertilizer, and only a few farmers use top dressing N fertilizer. In the frame of fertilizer variety, there is a phenomenon that using more ammonium bicarbonate than formula fertilizer, using more chemical fertilizer than organic fertilizer and using more macro element fertilizer than trace fertilizer.
Study on Tourist Flow Network Structure in Jiangsu Province
Authors: Pu Rong , Lu Shuying , Pu Yuansheng , Tao Zhuomin , Liu Peixue
Published: September 2019

In this paper, we used social network analysis (SNA) method to establish and analyse the network structure of the tourist flow of Jiangsu Province in China based on big data, and built a variable model to analyse its influencing factors. The results show that there is an obvious core-edge structure in the network of tourist flow. The centrality index in the southern region of Jiangsu Province is better than that in the northern region. The road distance is the main factor restricting the flow between regions, and the quantity of trains has a significant impact on the tourist flow. That is to say, a place with convenient transportation is the primary choice for people to travel. High quality of tourist facilities and online tourist products can attract tourists. They are also the driving factors for southern Jiangsu Province to play a great role in the tourist flow network.
Stability Analysis of Colluvial Slope under Different Rainfall Conditions
Authors: Fan RongQuan , Xiao Hong , Liu Teng , Ren GuangMing , Wang Bin , Chen ZhongGuo
Published: September 2019

Taking the accumulation slope of a reservoir abutment in western Sichuan as an example, this paper studies the influence of rainfall duration and rainfall intensity on slope stability with the help of GEO-SLOPE (SLOPE/W module) software according to saturated-unsaturated seepage theory and rainfall infiltration theory. The results show that when the rainfall intensity is constant, the slope stability decreases with the increase of rainfall duration, which presents a slightly slow-fast-slow pattern, and that the slope stability grandually dcreases with the increase of rainfall intensity under the same rainfall duration.
Remote sensing monitoring of ecological environment based on Landsat data
Authors: Lu Ying , Chen Chao , Gu Hailing , Chu Yanli
Published: September 2019

An ecological environment is a complex system fundamental to the sustainable development of society and economy. Landsat series satellites are widely used for monitoring the changes in the earth’s surface morphology. With long time series data, Landsat can provide new methods and technical support for eco-environmental monitoring. This study developed remote sensing monitoring methods based on Landsat data to observe the changes in the ecological environment in the Zhoushan region, China. The regional environmental changes in vegetation, water and other key ecological factors were analyzed using multi-temporal remote sensing data. This study shows the effectiveness of this method for the extraction of key eco-environmental factors such as vegetation and water body and the evaluation of regional eco-environmental quality. This study also reveals ecological patterns in Zhoushan region and provides data support for regional eco-environmental assessment.
Characteristics of saltwater intrusion in the Modaomen waterway in the dry season of 2017-2018
Authors: Shuqin Huang , Xiaoling Yin
Published: September 2019

Based on the observations of the Modaomen waterway in the dry season of 20172018 and the hydrometeorological data collected, the influence of runoff, tide and wind on the daily maximum intrusion length is analyzed here in order to researth the characteristics of saltwater intrusion in the Modaomen waterway in the dry season. Compared the daily maximum intrusion length calculated by formula with the observation, it can be found that the two were consistent. Through the correlation coefficient between intrusion length of saline water and flow rate, tide difference and wind, it is found that the movement trend of salinity borderline is determined by the stability of the upstream runoff. Under the condition that the upstream runoff is relatively stable, the movement trend of the salinity borderline is dominated by tide when discharge is high, and when discharge is low, the movement trend of salinity borderline is dominated by the interaction between tide and runoff. And the northerly wind promotes and accelerates the intrusion of the saltwater.
Construction of Loss Assessment Method of Eco-service Value in Sea Area Polluted by Chemical Leakage Accidents Based on Ecological Impact Prediction Model
Authors: Lan Ru , Qiao Bing
Published: September 2019

There is no unified and standardized method for assessing the loss of eco-service value in sea area polluted by chemical leakage accidents. In this study, an index system and a set of assessment procedures for the loss of eco-service value in chemically polluted sea areas are established, and an assessment method based on the ecological impact prediction model is constructed. The validity of this method is demonstrated by taking the northern coast of Hangzhou Bay, that is, the southern sea area of Jinshan District in Shanghai as an example. The conclusion of this study is that once the leakage accident of 2000 tons soluble toxic chemicals occurs in the sea area, 1860 ha sea areas may be affected, resulting in 1.68 billion economic losses; once the leakage accident of 5000 tons oil-insoluble toxic chemicals occurs, 34000 ha sea areas may be affected, resulting in 2.61 billion economic losses.
Estimating the Environmental Cost of Land Use Project
Authors: Xue Jie , Mu Wenfei , Wu Qiong
Published: September 2019

Environmental degradation is becoming a worldwide problem. However, traditional economic theory often disregards the value of environment in decision making, and the development of land use project usually ignore their damage on the land. As a result, a model needs to be proposed to calculate the cost of environment. We construct an environmental cost evaluation index system for land development projects, in order to calculate the cost of land resources loss. The land resources loss is caused by the destruction of the original land, we analyse it from the value that the land has, including land products value and ecological value. The project pollution cost is resulted from the various pollution that the projects produce after construction, we calculate the pollution treatment cost to estimate the pollution. Moreover, our model can be adjusted to the change of time easily, as we use many constants, such as prices of products and unit grain yield.
Does International Agricultural Trade Matter for Carbon Emissions: A Case Study of the Area Along “the Belt and Road Initiative”
Authors: Yang Ju
Published: September 2019

The research problem of this study is to understand how international agricultural trade affects the carbon emissions. To address this, we have conducted an empirical study based on the panel dataset of 48 countries of 5 regions along “the Belt and Road Initiative” over the period 1995-2014. The impacts of agricultural trade openness on the level of carbon emissions per capita has been investigated. Along with the traditional trade openness, a different trade openness measure is used, called as the adjusted agricultural trade potential index. Based on the findings of the paper, we can draw the following conclusion, that is, the adjusted agricultural trade potential index is negatively associated with the carbon emissions.
Study on Ecological Adaptive Reform Strategy of Traditional Dwellings in Jiarong Tibetan Ethnic Group——Taking Jiaju Tibetan Village as an Example
Authors: Ren Yaqiu , Sun Sijia , Wang Xiaodian
Published: September 2019

Jiaju Tibetan Village is a representative area of Jiarong Tibetans. This paper will take it as the research object, and find out some existing shortcomings by investigating its current situation, and analyse its ecological adaptability from three aspects: spatial layout, building structure and components, and building materials. On the basis of research and analysis and drawing on the existing literature research results, the paper discusses the ecological adaptive transformation strategies of traditional residences in Jiaju Tibetan Village from three aspects: architectural layout, envelope structure and renewable energy utilization. From the perspective of ecological energy conservation, it proposes a specific transformation strategy for the traditional dwelling of Jiarong Tibetans.
Visualization Research on China’s Housing Purchase Restriction Policy System--Taking Beijing as an Example
Authors: Duan Yinying , Zeng Fengqing , Gong Xiao
Published: September 2019

The housing purchase restriction policy is an important part of China’s real estate macro-control policy, and its policy objective is to curb the excessive rise of real estate prices. Starting from the Chinese housing purchase restriction policy, this paper combines the content analysis method and the common word analysis method to quantitatively analyze the control policies to curb the “real estate speculation phenomenon”, and sort out the control policy system structure of China’s housing prices to improve the existing government. The control policy system and the introduction of restrictions on purchase policies in other regions provide guidance.
A Study on Schematic Language of Cultivated Land Form in Linpan, Western Sichuan
Authors: Zhao Yutong , Zhang Ke , Zhang Haiyan , Zhao Yutong
Published: September 2019

Cultivated land is not only provided with the attribute of natural landscape, but also the carrier of means of production and social form. Some characteristic forms of cultivated land have become the common heritage of human cultural landscape. In recent years, with the change of land circulation and people’s modes of production, the cultivated land form has gradually lost its original characteristic texture. Therefore, how to protect and extend the cultivated land form needs urgent attention and research. The survey selected the existing remote sensing image of Dujiang Dam by Local Space Viewer, interpreted and extracted the schema of cultivated land form in Dujiang Dam, drew the schematic language such as “characters”, “words” and “phrases” according to its scale, and analysed its landscape ornamental value. Then, historical remote sensing was used to analyse the change of cultivated land form in Dujiang Dam, and field investigation and questionnaire distribution were combined to seek the cause and result of the change of cultivated land form. These provide support for future landscape aesthetics research.
The earthquakes aftershock processes of the Tien Shan and its surrounding area
Authors: Sychev V N , Sycheva N A
Published: September 2019

The earthquakes and aftershock sequences catalogue of 13 moderate earthquakes occurred in the Tian Shan and the Pamir Mountains from 1983 till 1997 have been examined from the point of view of non-equilibrium thermodynamics using Tsallis statistics and its compliance with Omori-Utsu power-law. It has been shown that the earthquake sequence is the system with memory and long-range correlations. The Tsallis parameter q for the aftershock sequences is larger than the q, calculated for all the earthquake catalogue, which indicates the preservation of increased long-range correlations during the aftershock sequence. Dynamic definition of the parameter q of the four events has demonstrated the sharp increase of the long-range correlations in the target region before the main event and the sharp decrease straight after it followed by return to the average value observed before the mainshock. It has been illustrated that the parameters of the researched aftershock sequences are described by the power dependences and follow the Omori-Utsu law.
Analysis of seismic noise level at high-mountain stations of the KNET network
Authors: Sycheva N A , Mansurov A N
Published: September 2019

In this work we estimate level of seismic noise at Kyrgyz Network’s (KNET) high-mountain stations for 19 years of the time this network operated in real-time mode (1999-2017). To do that for each channel (E – west-east, N – south-north and Z – vertical, all with 100 Hz sample rate) of each station we made fifteen-minute (900 seconds) segments of seismic noise. We took such segments for different seasons (March, June, September, December) and for various times of day (00, 06, 12 and 18 hours UTC) for the whole 19 years. We analyzed probabilistic power spectral density heatmaps and found out some features of KNET’s high-mountain station’s operation. These features depend on season-wise weather changes. The worth month for all stations is September. In general, when weather is favorable these stations can be characterized as low-noise ones and their data may be used in various researches.
Tsunami risk of earthquakes at the coast of Japan for the Far East of Russia
Authors: Zolotukhin D E
Published: September 2019

Possibility of a tsunami as a result of an earthquake is estimated by magnitude and geographical criterion now. The earthquake is considered tsunami-danger if his epicentre gets to a tsunamigenic zone, and intensity exceeds the set threshold value of magnitude. The solution of such task as specification of magnitude and geographical criterion for the announcement of alarm of a tsunami in the Sea of Japan and in the water area of the Pacific Ocean to the east of the Japanese islands is extremely relevant. For the purpose of specification of magnitude and geographical criterion of tsunami risk of earthquakes in these areas the author executed a series of computing experiments. During the computing experiments the centres of real historical tsunami in these water areas were modelled. At creation of the model centres of a tsunami the Okada model was used. Based on the analysis of statistics of historical tsunami and results of numerical modelling by the author the redundancy now in use by Service of warning of a tsunami in the Far East of Russia magnitude a tsunami risk threshold is shown.
Analysis of the main characteristics of tsunamis based on data from deep-ocean stations
Authors: Yu Korolev P , Korolev Yu P , Loskutov A V
Published: September 2019

A tsunami in the ocean, according to one idea, is a long wave with a practically unchanged period and a relatively slow attenuation. According to others, the dispersion affects the evolution of a tsunami, the wave period increases with time, and the amplitude attenuation is more rapid. This study investigates the transformation of tsunamis from source to coast, including the change in amplitude and duration of the head waves with distance. It is shown that the dispersion does affect the evolution of the tsunamis. The moment of dispersion manifestation depends not only on the magnitude of the earthquake that caused each tsunami, but also significantly on the depth of the ocean in the focal region.