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COVID-19 is a respiratory illness caused by the SARS-CoV-2 (Corona Virus), which first appeared in December of the year 2019. Covid-19 evolved from Corona Virus is a severe acute respiratory illness. Wuhan, Hubei, China and resulted in an ongoing pandemic. COVID-19, which was triggered by the SARS-CoV-2 virus, has rapid global dissemination, leading to worldwide flare ups. To lessen it's spread and safe communication it is necessary to develop speedy and contactless solutions in combat against it. The current gold standard for establishing its identification is RT-PCR Tests. This method of testing, however, is costly, time-consuming, and exceeds the social distance. Likewise, as pandemic is required to remain for some time, there is need for another analysis apparatus which beats these impediments, and is deployable at an enormous scope. The essential symptoms for this virus include cough and breathing challenges. Using AI and AI methods we can analyze respiratory sound which can give helpful insights, enabling the design of diagnostic tools. This survey uses AI based ML and DL approaches to offer a thorough overview of the COVID-19 diagnosis and therapy by analysing breathing patterns. [ABSTRACT FROM AUTHOR]

The Working Group for Women in Physics in Taiwan was registered to the Physical Society of the Republic of China (PSROC) in December 1999 and was formally announced at the 2001 annual assembly of PSROC. In 2003 the group became a formal committee under PSROC. The current committee includes seven female and two male members. In the last 10 years, many milestones were achieved. In particular, the percentage of female physics faculties in universities and research institutes has increased to 12% from 8% within the last 10 years. In this paper we will present the results of our survey on the changes of the percentage of female physics faculties/students within the last 10 years and express our need to improve the working environment for female faculties in Taiwan in the future. [ABSTRACT FROM AUTHOR]

There is no substitute for the primary responsibility of parents in child discipline. We studied the situation of parents with two children in China, focusing on the comparison of parents with only children who are inadequate to the education of two children. The specific dilemmas of Child discipline vary. It is reasonable to analyze the rescue mechanism of child discipline in China. In the future, as having two children at home is a common phenomenon, parents need to have tutoring ability. To help parents of two children achieve the goal of successful tutoring, the government needs to take the lead in setting up the mutual aid system. [ABSTRACT FROM AUTHOR]

The importation of Malaysian durian provided a case study for the teaching and learning about market environment analysis for undergraduate students of Zhaoqing University. Working in two teams of 15 to 16 members the students investigated the factors affecting the market environment in China for Malaysian durians importation which included the production of Malaysian durian, a comparison between Thai and Malaysian durians, the regulatory framework governing the importation of Malaysian durian into China. The current market situations for durian in China as well as possible marketing options for whole fruit frozen Malaysian durians in China were also investigated. The study concluded that building a Malaysian durian brand in China and expanding the varieties available in the market to not overly dependent on the Musang King variety are key factors for the success of Malaysian durians in the China market amid formidable competition with Thai durians which have a substantial share of the market at present. [ABSTRACT FROM AUTHOR]

The construction of Jiqingli Tea Garden in Guangdong Province was rated as one of China's top ten beautiful tea gardens by the Ministry of Agriculture in 2014. In 2019, Jiqingli Tea Garden started a digital art project of 4D holographic projection to create Jiqingli's cultural landscape and created a tourism resource of the whole realm by taking advantage of the landscape and topography of the tea garden. The digital art project of 4D holographic projection for the cultural landscape of Jiqingli tea garden innovates its tourism cultural resources by using modern digital media design and integrating digital scientific and technological means to transform the singing and dancing, music, and tea picking culture into audio-visual works of 3D holographic projection. For example, the project uses digital acquisition, digital design, digital special effects, digital sound, 3D animation holographic laser projection, virtual reality technology, and other scientific and technological means to recreate the landscape culture and art of the Jiqingli tea garden. Digital technology allows forming a 3D three-dimensional work of large-scale acousto-optic holographic images and adding the situational language of scientific and technological means. It forms the effect of 4D holographic projection to allow the audience to be personally present. The project aims to create a brand-new visual, audio, and emotional cultural product for the space of Jiqingli tea garden to realize the creation of new eco-tourism resources combining ecological natural resources and digital media design. [ABSTRACT FROM AUTHOR]

The very rapid development of technology today cannot be separated from the role of artificial intelligence. Artificial intelligence is a thought process or intelligence like humans' that machines can use to do specific jobs. The use of artificial intelligence is very diverse in various fields, including the health sector. Recently the world's media has been shocked by the virus spread in China, namely the coronavirus. Corona can cause severe pneumonia for sufferers. Pneumonia itself is inflammation of the lungs caused by a virus. One of pneumonia sufferers' characteristics is that there is a fluid that looks like white spots on radiology or chest X-rays. However, it will be challenging to diagnose because at a glance, the radiological test results of lungs with pneumonia and normal lungs are similar. So, misdiagnosis is possible. Therefore, this study aims to create a machine learning model to classify lungs with pneumonia and normal lung on chest radiological images using the Convolutional Neural Network (CNN) algorithm. CNN is well known as a method in which the data process both image and video. The classification obtained for validation results in an accuracy value of 94%-99% for the pneumonia category, which suggests that the model can predict the image correctly. Meanwhile, for normal lung images, the accuracy rate is 84% -98%. This shows that the model can predict almost all of the images well; there is only one image that is not predicted correctly. [ABSTRACT FROM AUTHOR]

The establishment of a reliable simulation system for a solar tower power plant can greatly increase the economic and safety performance of the whole system. In this paper, a dynamic model of the 1MWe Solar Tower Power Plant at Badaling in Beijing is developed based on the ?STAR-90? simulation platform, including the heliostat field, the central receiver system (water/steam), etc. The dynamic behavior of the global CSP plant can be simulated. In order to verify the validity of simulation system, a complete experimental process was synchronously simulated by repeating the same operating steps based on the simulation platform, including the locations and number of heliostats, the mass flow of the feed water, etc. According to the simulation and experimental results, some important parameters are taken out to make a deep comparison. The results show that there is good alignment between the simulations and the experimental results and that the error range can be acceptable considering the error of the models. In the end, a comprehensive and deep analysis on the error source is carried out according to the comparative results. [ABSTRACT FROM AUTHOR]

In recent years, acute myocardial infarction has become a public health problem attracting worldwide attention. Various countries have adopted various public health policies, among which the quality improvement plan for acute myocardial infarction is the most important part of the measures, which effectively reduces the occurrence of acute myocardial infarction. However, at the same time, the quality improvement plans of various countries still have many inadequacies, which are more worthy of our reflection and improvement. This article will compare the major public health policies of China and developed countries in the United States in dealing with acute myocardial infarction, and then provide reference for improving the quality of life of patients with acute myocardial infarction in China and improving the hospitalization rescue rate of patients. [ABSTRACT FROM AUTHOR]

In recent decades, China's renewable power generation has developed quickly. However, the randomness of output power causes wind and photovoltaic power curtailment. With the rapid development of renewable energy, renewable energy consumption has gradually become the focus of research. This article comprehensively reviews the current situation and practices of reducing the curtailment of renewable energy in China. From the perspective of methods used to stabilize the fluctuation characteristics of generation output, two modes are outlined: based on energy storage devices and complementary wind-solar system. Then, an Advanced Adiabatic Compressed Air Energy Storage (AA-CAES) system simulation model is proposed as a crucial solution to reduce renewable energy waste. Finally, the application and development trend of renewable energy and energy storage technology has prospected. [ABSTRACT FROM AUTHOR]

Cave building is not only a kind of architecture with unique style, but also a manifestation of Chinese traditional culture. Cave culture is an important part of Chinese traditional culture. The main purpose of this thesis which studies the architectural form of Qikou Cave, is to analyze how the cave building plays a positive role in promoting the development and application of modern resources and in cultural transmission. Based on a large amount of literature material, and taking Qikou Cave as an example, by studying the morphological characteristics of cave building, the paper takes an optimistic outlook on its future development and the sustainable development of the resources. It is expected that the cave culture can be further explored to promote the traditional Chinese culture and to drive the development of modern construction industry and resource conservation. [ABSTRACT FROM AUTHOR]

The new energy vehicle industry in China has developed rapidly in recent years, but there is still a gap in core technology. Some problems are brought the adverse effect on it, such as imperfect infrastructures, imperfect systems in market access and regulatory, single channels for marketing and low acceptance among consumer. Based on the development of new energy vehicle industry home and abroad, this paper puts forward some problems of new energy vehicles industry in China, then offers some feasible suggestions. [ABSTRACT FROM AUTHOR]

An internal wave observation experiment was performed near the south of Hai-Nan Island in the South China Sea in July 2004. Three vertical thermistor arrays were moored to estimate internal wave propagation direction and velocity. A nonlinear internal wave packet was observed in this experiment. It appeared at flood tide time of wee hours. Computation indicated that the nonlinear internal wave packet's velocity was 0.54 m/s and its propagation direction was northwest. From its propagation direction, we estimated that the nonlinear internal wave packet was generated near Xi-Sha Islands. The dnoidal model of KdV(Korteweg-deVries) equation was used to simulate the waveform of thid nonlinear internal wave. Measured data shows the crest interval of nonlinear internal waves was shorter when they propagated. In the last section of this paper we simulate a nonlinear internal wave packet's effect on sound propagation and analyzed mode coupling led by the nonlinear internal wave packet. [ABSTRACT FROM AUTHOR]

In the summer of 1996, a joint China-U.S. underwater acoustics experiment was conducted near the geographic center of the Yellow Sea with a water depth of 75 m. Hundreds of broadband explosive sources were deployed. The seabed sound speed in this experiment has been inverted using two methods based on data-derived mode depth functions and modal arrival time differences. The seabed attenuation has been estimated from three different approaches using modal attenuation coefficients, modal amplitude ratios, and transmission loss measurements [Wan, Zhou, and Rogers, J. Acoust. Soc. Am., 128(2), 2010]. The present paper analyzes the vertical coherence of the sound propagation as a function of range and frequency. The seabed sound attenuation is inferred by minimizing the difference between the theoretical and measured vertical coherence. The seabed attenuation, inverted from long-range broadband sound propagation with different methods over a frequency range of 80-1000 Hz, can be expressed as αb = (0.34±0.02)f187±004{dB/m·kHz). [ABSTRACT FROM AUTHOR]

As a non-invasive modality, high-intensity focused ultrasound (HIFU) therapy has been received an interest for the treatment of solid tumor. There are some makers of HIFU for the equipment in China. The Sonic CZ901 is developed from the Mianyang stream that has a great advantage for guiding by color Doppler ultrasound imaging. For the research about possibility of this equipment, we evaluate the clinical usefulness to the solid tumor of HIFU treatment at Wujing general hospital in Beijing. We elucidate the result in 28 cases with benign and malignant tumor (Uterine myoma:16, Benign prostatic hypertrophy:5, Benign breast tumor:2, Breast cancer:1, Retroperitoneal tumor:1, Pheochromocytoma:1, Liver cancer: 2) . After 14∼90days, all cases show the reduction of tumor size (Max.3.2cm, Min.1.6cm, :Mean 2.2cm reduced), and the blood flow of tumor completely reduced in 7/23, partially reduced in16/23. Clinical symptoms disappeared in 7, clearly improved in 14, improved in 7. All treatments had no adverse event except for two cases of liver cancer. They felt an abdominal pain that controllable by medicine and it improved within 6hours. It is concluded that HIFU with guide by ultrasound imaging is very safe, painless and effective as the anti-tumor treatment. © 2006 American Institute of Physics [ABSTRACT FROM AUTHOR]

A 75m 10.5kV/1.5kA three-phase AC high-temperature superconducting (HTS) power cable was installed in a live power grid in China in January of 2005. A liquid nitrogen decompression (LND) cooling system was adopted for the 75m cable facility for two reasons: one is that the LND method is simple and reliable; the other reason is that we have successfully used this method with a 10 m cable prototype since 2003. The 75m HTS power cable facility with LND cooling was commissioned at the end of 2004. By August 21, 2005, the total running time of the cable in the live power grid was more than 4000 hours. In this paper we will discuss the design and running data of the cryogenic system and present some analytical results. © 2006 American Institute of Physics [ABSTRACT FROM AUTHOR]

For this project, it is focused on design and analysis a new material to do improvement for a portable blender equipment. In Malaysia, there are many industries portable blender that always produce a new design to attract customers around the world. It also gets highly demand especially from China. The material selection and design improvement are important to produce a friendly use of portable blender to convenience users. The Portable Blender industry share involves the current market status with some changing trends that can affect the Portable Blender market growth rate. The objectives of this project are to design a new concept based on selecting material and to decrease the time to run the portable blender. The design of portable blender equipment is using CAD software and then transfer to Finite Element Analysis (FEA) to analyses the capabilities of part design. At the end of this project, this research will give understanding about design using CAD software and do analysis that improved the portable blender equipment. [ABSTRACT FROM AUTHOR]

Trade tension or trade war between the U.S. and China has had a significant impact on many sectors in the world. The business sector is one of them. Trade tension began on March 22nd 2018, after U.S. President imposed a $50 billion import duty on Chinese goods entering the United States. In return, the Chinese central government also imposed import duty on more than 128 U.S. products. The import duty policy led to some decreases in productions and sales in China. As a result, the level of consumption and the demand for crude oil in China have declined. The fall in crude oil demand from the largest oil consumer, coupled with excess oil supply are estimated to produce volatility at the Brent crude oil price. Therefore, this study aims to model the monthly average of Brent crude oil price with the influence of trade war. The method used in this study is the Autoregressive Integrated Moving Average with Exogenous Variable (ARIMAX), where the exogenous variable is a dummy variable from the trade war between the U.S. and China. The results show that trade war has a significant effect on the monthly average of Brent crude oil price and the best model is ARIMAX(1,1,0), with a MAPE value of 13.6733 percent. [ABSTRACT FROM AUTHOR]

Abstract. Dapsone Hypersensitive Syndrome (DHS) is the rare case of immunogenic disease that cause physiological damages even death case. However, in Papua Ethnic group this disease was frequently reported among leprosy patients since Dapsone is one of the main drugs in Multi Drugs Therapy standardized by WHO. Previous study in China found that HLA-B 13:01 is strongly associated to DHS in China population. Aim of this study was to detect HLA- B 13:01 gene among DHS leprosy patients in Papua using Sequence Based Typing Methods and qPCR method. This was cross sectional study among 34 leprosy patients that presented with DHS from Papua and West Papua Province. As the negative control we screened 52 leprosy patients that confirmed non-DHS patients. DNA was extracted from 3 mL blood specimens. HLA-B alleles were detected using Sequence Based Typing method by TBG kit and qPCR rapid detection kit using Nalagenetic. The results of HLA-sequence based typing among the 34 leprosy with DHS patients showed that 91,17 % were positively HLA-B:13:01 HLA-B 13:01 carrier consist of 82,35% Heterozygous and 8.82% Homozygous. In negative control 96,15% were non carrier of HLA-B 13:01 gene and 3,85% were heterozygous. Using qPCR procedure, HLA-B 13:01 was positively detected in DHS-leprosy patients and 96.15% negatively detected in Non-DHS leprosy patients but positive in 3.85% of heterozygote non-DHS. The concordances between SBT and qPCR methods were 100%. Conclusion of this study was HLA-B 13:01 gene can be detected in most of DHS leprosy patients in Papua Ethnics Group using SBT as well as qPCR rapid detection kit. [ABSTRACT FROM AUTHOR]

The self-supported racks warehouse with the advantages of high space utilization, short construction period and low overall cost, has great application value and market prospects. Due to the lack of domestic design specifications for self-supported racks warehouse, there are few market applications in China. Based on the requirements of relevant Chinese structures design codes and fire protection design codes, the application of a self-supported racks warehouse in a cigarette logistics system is studied. Combined with the actual needs of cigarette logistics projects, a self-supported racks warehouse is designed to meet the requirements of a cigarette logistics distribution center. Compared with the traditional high racks warehouse, the advantages are obvious. [ABSTRACT FROM AUTHOR]

The wind and rain bridge is landmark of the Dong people; which is a unique national landscape, and it is the crystallization of art history of bridge construction in China, its rigorous structure, unique shape and abundant national temperament exudes a strong national atmosphere. The wind and rain bridge is a wood and stone bridge building that integrates bridge, corridor and pavilion, it is as strong as iron and stone bridges and can exist for two or three hundred years without damage. The lower part of wind and rain bridge is the pier, it is mostly made up of bluestone; the middle bridge floor and the upper pavilion are mostly wooden structures. [ABSTRACT FROM AUTHOR]

In this study, the sludge of three municipal sewage treatment plants in Foshan City, Guangdong Province, China, was dewatered and recycled. The experimental results shown that after deep dewatering with different chemical conditioning reagents, the moisture content of municipal sewage sludge was decreased greatly, from about 97% to about 55%. After dewatering, the organic matter content of sludge was maintained at a high level which is beneficial to the composting treatment of the sludge. The organic matter content of sludge in Foshan No. 1 Sewage Treatment Plant and No. 2 Sewage Treatment Plant was more than 30%, while it was between 15% and 20% in Foshan No. 3 Sewage Treatment Plant. Sludge from all three sewage treatment plants neeed to add a small amount of nutrients to compost. After 14 days of the aerobic composting, the moisture content of the sewage sludge could be reduced to less than 50%, and all the index met the requirements of the agricultural standard. [ABSTRACT FROM AUTHOR]

Bioenergy from crop residues is one of important components of clean energy to adapt climate change. However, it is still uncertain how bioenergy potential from crop residues changes, as well as what deficits exist when offsetting fossil energy consumption. Taking the Yangtze River Delta (YRD) in China as an instance, bioenergy potential of crop residue was estimated for the period 2001-2010. The deficits between bioenergy from crop residue and fossil energy consumption were assessed to examine their differences. We found that a large amount of cropland, approximately 15% of the total cropland in 2000, was encroached for other uses in this period. The cropland loss reduced the bioenergy of crop residues, at a rate of 4.05 x 1011kJ · year-1, approximately 1.62% of annual average bioenergy from crop residues. In this context, further research and policy are needed to advance sustainability in the YRD in future decades. [ABSTRACT FROM AUTHOR]

Artemisia annua is medicinal plant species producing artemisinin, the bioactive compound used as antimalaria. This plant is native to China and North Asia and has been introduced to Indonesia since the 1990s. Due to the low content of artemisinin in Artemisia annua which are grown in the tropical region, great efforts have been devoted to improving artemisinin production. The research has been carried out to improve the growth, yield and artemisinin content by manipulated of photoperiod during the cultivation. Each of 100 individual plants is grown in the greenhouse for treatment of photoperiod and in the field for neutral daylight. The photoperiodicity manipulation was used the LED lamp within the greenhouse with the time duration of 16 h. The growth of Artemisia was monitor during the experiment, and biomass production was recorded after harvested time as well as the artemisinin and volatile oil content. The result of the research shows that photoperiod manipulation during the vegetative growth of Artemisia annua affects strongly on the growth, yield and artemisinin content. The 16 h of light was able to increase the yield of dry matter of Artemisia annua 20 % more compared to the neutral daylight. Further, the artemisinin content also increased significantly by the treatment of 16 h of light. [ABSTRACT FROM AUTHOR]

Biomass allocation between above- and below-ground has an important effects on carbon storage, and it change was often affected by soil properties and other disturbances. 22 and 41 plots were selected for shrub and grassland, respectively, in various altitude from 2552 to 4103m in upper Heihe river basin of China, and some physical factors (e.g. cover, species, soil bulk density, field capacity) and chemical factors (e.g. pH, available P and K, soil organic matter) were adopted to explore the relationship between these factors and the biomass allocation between above- and below- ground compartment. The results showed that the above: below ground ratios was 11 and 12 in shrubby areas and grassland respectively, and pH, cover and available P were the main factors that influenced biomass allocation, suggesting that the ratio can be changed by increasing cover and species diversity, and by increasing available P buy fertilization. [ABSTRACT FROM AUTHOR]

In order to determine the propensity of Cephalcia kunyushanica (Hymenoptera: Pamphiliidae) to different forest types (host stand and host-non-host mixture stand) and the interaction between host amount and larvae density of Cephalcia kunyushanica. We investigated the mean insect density and stand types in 50 permanent plots in the Kunyushan Mountains, China. The results showed that seven kinds of pine species were determined as the host of Cephalcia kunyushanica in Kunyushan Mountains. Among the seven species, difference in larvae density was not significant (p > 0.05). Likewise, non-significant difference (p > 0.05) was also found in the mean density of the insects between two kinds of stand types (pure host stand and mixed stand). Strong negative linear relationship between mean insect density and host amounts were found in pure host plots in the year 2013 and 2014. However, non-significant (p > 0.05) correlation was found in host-non-host mixture plots. In addition, in 39 plots investigated, the Shannon-Wiener index (H’) did not change significantly (p > 0.05) in 2008 and 2013, indicating that the resource dilution effect fit the Cephalcia kunyushanica-host model in the Kunyushan Mountains. The current manuscript reports the interaction between the specialist phytophagous insects and the hosts is fit for the resource dilution hypothesis. The result will improve the understanding and operation on the insect-host relationship, as well as the hypothesis could be helpful for us in ecological controlling forest pests. [ABSTRACT FROM AUTHOR]

This project designed and produced a hanging cleaning robot, which integrates various functions such as geared motor, sensor, water pump, camera, lifting structure and control structure. It can not only replace the manual cleaning of the wind turbine tower, but also select the appropriate cleaning force in real time, control chip data communication synchronization, machine working condition monitoring and fault diagnosis and analysis, overcurrent and overvoltage protection, communication interruption protection, and movement. And yaw, time-frequency waveform analysis and operation status data acquisition. The robot can solve all kinds of problems encountered in the cleaning of wind turbine towers [ABSTRACT FROM AUTHOR]

Wind farm power fluctuations will have a certain impact on the operation of the regional power grid, mainly due to voltage fluctuations caused by power fluctuations. Therefore, research and development of wind power prediction technology, especially ultra-short-term power forecasting. In order to submit the necessary information to the power dispatching department as soon as possible, it is convenient for system scheduling. At present, the power forecasting system on the dispatch side and part of the wind farm in China has gained popularity. However, there are widespread deficiencies in the stable operation of the system. As China's wind power forecasting system is further promoted in power grids and wind farms, how to further improve the stability and high efficiency of system operation has become an urgent issue. Therefore, combining the actual production experience of the existing wind power forecasting system, we analyze the performance of the existing wind power forecasting system to find out the problems that affect the smooth operation of the system, and consult domestic and foreign data to provide targeted information for each problem. There are constructive optimization proposals and a set of optimization solutions are given at the end. In addition, according to the final proposed solution, we have developed a wind power forecasting system optimization model to compare changes in the performance of the system before and after optimization, and then verify whether the optimization scheme is correct [ABSTRACT FROM AUTHOR]

In recent years, the tea beverage enterprises in China have made great strides inthe protection of intellectual property rights, attaching great importance to the protection of trademark rights and the marketing of brands. However, they have paid little attention to the patent protection of tea beverage formulations, and the research literature is scarce. Under the background of the rapid development of knowledge economy, the number and quality of patents for tea beverage enterprises are not only the key elements to reflect their core competitiveness, but also the important content of enterprise's knowledge management and the cornerstone of brand building. Taking the patent layout of Kao Corporation in the tea beverage industry as an example, the article analyzes the current situation and existing problems of the patent application of tea beverage enterprises in China and puts forward suggestions on how to improve the patent protection strategy of tea beverage enterprises in China. Key words : tea beverage enterprises; formula patents; patent layout [ABSTRACT FROM AUTHOR]

In recent years, the troops have been carrying out training missions to Tibet more and more. How to improve the inspection results of the road lead to Tibet, ensure that the army carry out and formulate targeted motorized mobility training programs and related disposal plans, is a real problem to be solved and answered. This article analyzes the current research status at home and abroad, introduces the key technologies and main functions of the military application, and puts forward that the use of 3D real maps of Highway into Tibet, which will promote the motorized training of troops into Tibet and complete the resolution of determination. [ABSTRACT FROM AUTHOR]

With the draining of traditional energy, all parts of nation implement policies to develop new energy to generate electricity under the favorable national policy. The wind has no pollution, Renewable and other advantages. It has become the most popular energy among the new energy power generation. The development of wind power in Henan province started relatively late, but the speed of the development is fast. The wind power of Henan province has broad development prospects. Wind power has the characteristics of volatility and randomness. The wind power access to power grids will cause much influence on the power stability and the power quality of distribution network, and some areas have appeared abandon the wind phenomenon. So the study of wind power access to power grids and find out improvement measures is very urgent. Energy storage has the properties of the space transfer energy can stabilize the operation of power grid and improve the power quality. [ABSTRACT FROM AUTHOR]

Based on the durability of semi-rigid base asphalt pavement test road in Guangdong Yunluo expressway, by comparing the mechanics response of modified semi-rigid base, RCC base and inverted semi-rigid base with the state of continuous, using four unit five parameter model to evaluate rut depth of asphalt pavement structure, and through commonly used fatigue life prediction model to evaluate fatigue performance of three types of asphalt pavement structure. Theoretical calculation and four years tracking observation results of test road show that rut depth of modified semi-rigid base asphalt pavement is the minimum, the road performance is the best, and the fatigue performance is the optimal. [ABSTRACT FROM AUTHOR]

Based on the actual data of urban transport in Guangzhou, 19,150 bus stations in Guangzhou (as of 2014) are selected as nodes. Based on the theory of complex network, the network model of Guangzhou urban transport is constructed. By analyzing the degree centrality index, betweenness centrality index and closeness centrality index of nodes in the network, the level of centrality of each node in the network is studied. From a different point of view to determine the hub node of Guangzhou urban transport network, corresponding to the city's key sites and major transfer sites. The reliability of the network is determined by the stability of some key nodes (transport hub station). The research of network node centralization can provide a theoretical basis for the rational allocation of urban transport network sites and public transport system planning. [ABSTRACT FROM AUTHOR]

China is a mountainous country, especially in the southwest area. Recently, the variety of geological disasters such as landslides caused by roadway excavation has become a growing concern for our society. Blindly pursuing mining interests without regard for either the environment or residents in the surrounding areas has created a dangerous situation. In recent years, frequent collapses have occurred at Zengzi Rock in Chongqing, especially after torrential rains [1]. This landslide site is a typical example of collapse caused by mine roadway excavations. To study the mechanism of mining slope stability, we conducted a numerical simulation by DDA based on Zengzi Rock in Chongqing, China. The numerical simulation analyzes the slopes under different engineering conditions and rainfall conditions. The results show that the slope has already been changed under the action of its own joints and fissures. After the excavation of the roadway and the rainfall action, this change is drastically increased and the effect is obvious. Through the result graph, we can find that the change of the displacement and stress distribution is obvious, and the simulation results can be great significance to the mining and support of similar mountain conditions. [ABSTRACT FROM AUTHOR]

Aiming at the influence of "noise" of occupational hazards on the physical health of workers, the noise intensity of a working area of a hydropower station in China was evaluated comprehensively. Under the condition of power generation, noise detection is conducted on the main patrol area of the operator, and the noise samples in different regions are analyzed and processed by the single factor analysis of variance. The results show that the noise intensity of different working areas is significantly different, in which the overall noise level of the turbine layer is the highest and beyond the national standard, the protection measures need to be strengthened and the noise intensity of the rest area is normal [ABSTRACT FROM AUTHOR]

The traffic demand elastic is proposed as a new indicator in this study to measure the feasibility of the high-speed railway construction in a more intuitive way. The Matrix Completion (MC) and Semi-Supervised Support Vector Machine (S3VM) are used to realize the measurement and prediction of this index on the basis of the satisfaction investigation on the 326 inter-city railways in china. It is demonstrated that instead of calculating the economic benefits brought by the construction of high-speed railway, this indicator can find the most urgent railways to be improved by directly evaluate the existing railway facilities from the perspective of transportation service improvement requirements. [ABSTRACT FROM AUTHOR]

Based on the 3107 working face of a mine in Shanxi province, using the theoretical calculation and field measurement methods, explored a coal mining technology by combining use of the caving method and the roadway filling method, to solve the coal mining problems under the highway, under the premise that not change the mining layout of the coal mine. The results show that it is feasible to solve the problem of coal mining under the highway by using the combined mining technology. The surface subsidence can be controlled at the range of 282 to 312mm and 278 ~ 85mm, in parallel to and vertical to the working face direction, respectively, by using this technology; and the maximum slope of the surface deformation was controlled at 1.52mm/m, and all of the deformation variables are controlled under the requirement of the regulation [ABSTRACT FROM AUTHOR]

This article using the retroactive content analysis method summarizes the research progress of air polycyclic aromatic hydrocarbons during 1983 to 2016, and is based on the 72 search results about "Air Polycyclic Aromatic Hydrocarbons" in CNKI database. This article directly points out the study achievements and improvements about air polycyclic aromatic hydrocarbons from 4 aspects, the reviews of the studies of PAHs in a special stage, the studies on PAHs determination and analysis method, the studies on PAHs concentration in different places and the studies on the relationship between PAHs concentration in air and human health, respectively. [ABSTRACT FROM AUTHOR]

The wind power and PV are the key fields of clean energy development in China in recent years. However, there are still many aspects of problems in wind power and PV industries at present, such as the insufficient consumptive ability and the limitation of market competition capability. The effective leading and support of government in the aspect of policies is especially needed in order to solve these problems. Based on the analysis of main policies system of wind power and PV in our country, Spain, the United Kingdom and Germany are chosen as typical countries because of their wind power and PV industries are relatively developed. Their policies of wind power and PV industries are studied respectively from five aspects, namely macroscopic laws, development planning, administrative policies, fiscal and tax policies and price policies. Then the comparison among typical countries and China is made and the exiting problems in China's policies of wind power and PV industries are summed up. Finally, the suggestions to promote China's wind power and PV industries development are presented. [ABSTRACT FROM AUTHOR]

The article presents a research conducted on Lazurite, a part of the semi-precious stone Lapis Lazuli containing sodalite mineral. It was conducted on about thirty samples of the rock from various countries including Russia, China and Afghanistan. Raman Spectroscopy done on Lazurite can tell about its geographical source. The Lazurite's radical anion s3-, produces three spectras.

© 2000 American Institute of Physics. [ABSTRACT FROM AUTHOR]

In this research, based on the data of one time by the PCASP-100X probe of aircraft PMS and CCN counter detected under clear sky weather condition in summer over the Bohai-sea gulf area of north China at June 21, 2005, the distribution character of aerosols and CCN is primarily analyzed under different geography environment conditions over Bohai sea gulf area. The result shows that the aerosol concentration is 103 cm-3 in city boundary layer, upper troposphere is less than 103 cm-3, usually, and aerosol concentration value is decrease with height. Upper 600 meters level over the offing, the horizontal distribution of aerosol concentration value is relatively uniformity, it is generally 2000 to 6000 cm-3, which is less than one order of magnitude corresponding over the city and terrene height level, the result indicates that there is a significant different on distribution character of aerosols between the over city and Bohai-sea gulf area. At the same time, comparatively, the CCN counter detected result shows that CCN and aerosol concentration variety trend is similar with height over the city and sea area, which is exponential law. But, in atmospheric boundary, CCN and aerosol concentration value less than 1 to 5 times over offing area with over city area relatively. Otherwise, the researched result primarily suggests that weather conditions play an important rule for aerosol particle transportation in horizontal and vertical direction in atmospheric boundary layer. [ABSTRACT FROM AUTHOR]

The aerosol-radiation interaction is coupled into an online mesoscale aerosol forecasting model. The direct radiative feedbacks on heavy air pollution weather due to aerosols are simulated and studied. The preliminary results show aerosols direct radiative effects may cool the near surface atmosphere in East Asia, reduce turbulent diffusion process and further weaken low pressure system related with heavy pollution episode. All results suggests that aerosols direct radiative feedback is benefits to keep the mesoscale stable condition of the local atmosphere in East China and shows positive feedback on the keeping and developing of heavy air pollution episode in East Asia. [ABSTRACT FROM AUTHOR]

Recent research activities in the Nuclear Reaction Group at the China Institute of Atomic Energy are reviewed in this talk. The following topics are addressed: i) the effect of neutron transfer with positive Q-value on the fusion process, ii) the anomaly of surface diffuseness found in the fusion reaction, iii) the competition of quasi-fission and pre-equilibrium fission with fusion-fission in the heavy-ion induced reaction, iv) the breakup effect on the fusion reaction induced by weakly-bound nucleus, and v) the exotic two-proton halo structure and its related di-proton decay for the proton-rich nucleus close to the drip line. [ABSTRACT FROM AUTHOR]

The relationship between the precipitation stage and water cloud properties was studied in the mid-latitudes using space-borne radar and radiometer data, with a focus on a comparison between continental (over China) and oceanic (over the northwest Pacific) clouds. More specifically, fractional occurrences of the precipitation categories were investigated in terms of two-dimensional representations of cloud parameters, such as combinations of optical depth - effective particle radius, and liquid water path - droplet number density. As a result, systematic changes in the transition regarding pairs of the cloud parameters were well captured for all precipitation categories. The transition pattern was similar for both land and oceanic clouds. Notably, the ranges of all values of cloud parameters (except cloud droplet number density) were considerably larger for oceanic clouds for the precipitating category. [ABSTRACT FROM AUTHOR]

A study of the acoustic characteristics of the Zeng Hou Yi chime bells from the fifth century BC during the Chinese Bronze Age. [ABSTRACT FROM AUTHOR]

Besides nephrite, serpentine is also frequently employed as a jade material in China since the Neolithic period. Translucent or opaque, serpentine presents diverse colors, including yellow-green, green, dark green, and tan, which are related to its chemical composition and occasionally to its associated sub-major minerals. Serpentine could be subjected to color change due to secondary alterations or weathering. In this study, we mainly focus on the heating effect on serpentine, as some ancient serpentine jades may have been exposed to heat for some different reasons, such as carving, funeral ceremony or imitating. A series of non-heated and heat-treated raw serpentine jades are examined using Raman spectroscopy and other complementary methods. The subtle change of molecular structure and color of serpentine due to the heat treatment is reported in detail. [ABSTRACT FROM AUTHOR]

Based on the 110M ψ(3686) data sample which has been collected by BESIII at year 2009, many χcJ decay modes have been measured, such as χcJ → π0π0, χcJ → ηη, χcJ → VV, χcJ → γV, and so on. Results presented in this document are preliminary. [ABSTRACT FROM AUTHOR]

The new BES III detector at BEPCII collected 106 million ψ[acute_underaccent] and about 226 million J/ψ events in 2009. Results based on these samples are reported, including branching ratios for χXcJ → π0π0,ηη, 4π0, γyV and VV, where V is a ρ, ω, or [uppercase_phi_synonym] as well as first measurements of the branching ratios for ψ → γ0hc and hc → γηc and measurements of the mass and width of the hc. Results in hadron spectroscopy include the confirmation of the pp threshold enhancement in J/ψ→γpp and confirmation of the X(1835) in J/ψ→γη[acute_underaccent]π+π- [ABSTRACT FROM AUTHOR]

Partial wave analysis (PWA) is a core tool for determining resonance properties in hadron spectroscopy. The unbinned likelihood fits employed are however computationally very expensive especially in view of the very large data samples being collected at the Beijing Spectrometer (BES) III experiment and expected from future experiments such as Glue-X and PANDA. Using the power of massively parallel floating point calculations on graphics processing units (GPUs), we have managed to speed up PWA by more than two orders of magnitude compared to legacy implementations. The resulting software framework allows for the fast creation and running of PWA code. Modern hardware and software thus solve the PWA speed problems-many questions concerning fit methods and especially the reliability of fit results however remain open. [ABSTRACT FROM AUTHOR]

In order to meet the different requirements of applications in synchrotron radiation and plasma diagnosis in China, focusing and imaging optics based on Kirkpatrick-Baez (KB) mirrors, compound refractive lenses (CRLs), and multilayer Laue lenses (MLLs) were studied in our lab. A one-dimensional KB microscope using mirrors with a dual-periodic multilayer coating was developed. The multilayer mirror can reflect both 4.75 keV (Ti K-line) and 8.05 keV (Cu K-line) simultaneously, which makes alignment easier. For hard x-ray microscopy, CRL was studied. Using a SU-8 resist planar parabolic CRL, a focal line of 28.8-μm width was obtained. To focus hard x-rays to nanometer levels efficiently, an MLL was fabricated using a WSi2/Si multilayer. The MLL consists of 324 alternating WSi2 and Si layers with a total thickness of 7.9 μm. (Recently, a much thicker multilayer has been deposited with a layer number of n = 1582 and a total thickness of 27 μm.) After deposition, the sample was sliced and polished into an approximate ideal aspect ratio (depth of the zone plate to outmost layer thickness); the measured results show an intact structure remains, and the surface roughness of the cross section is about 0.4 nm after grinding and polishing processes. [ABSTRACT FROM AUTHOR]