bluuebunny/crossref_metadata_2025 huggingface dataset:
The synthesis of greenish phosphorus on carbon substrates
Authors: Wang Haipeng , Liu Cheng , Wang Huili , Han Xinpeng , Zhang Shaojie , Sun Jiantong , Zhang Yiming , Cao Yu , Yao Yuan , Sun Jie
Published: March 2021

A new phosphorus allotrope called greenish phosphorus was successfully synthesized on carbon substrates.
Fine-tuning the pore structure of metal–organic frameworks by linker substitution for enhanced hydrogen storage and gas separation
Authors: Han Xiwei , Yang Xiaoxian , Yu Chuan , Lu Shuyan , Pouya Ehsan Sadeghi , Bai Peng , Lyu Jiafei , Guo Xianghai
Published: March 2021

The functionalized Zr-MOFs with narrowed cavities and exposed sites exhibit improved H2 storage and adsorption selectivity towards binary mixtures.
Evolutionary structure prediction-assisted design of anode materials for Ca-ion battery based on phosphorene
Authors: Chowdhury Chandra , Gain Pranab , Datta Ayan
Published: March 2021

Higher energy density is achieved for calcium ion battery with phosphorene-based binary systems.
DFT study of H2 adsorption at a Cu-SSZ-13 zeolite: a cluster approach
Authors: Mounssef Jr. Bassim , de Alcântara Morais Sara Figueirêdo , de Lima Batista Ana Paula , de Lima Lucas Welington , Braga Ataualpa A. C.
Published: March 2021

The H2 adsorption and interactions with a Cu(i)-SSZ-13 zeolite were computationally studied. The zeolite cluster models were built by means of a systematic approach able to capture the complex environment around the Cu sites.
Correction: Space charge limited release of charged inverse micelles in non-polar liquids
Authors: Prasad Manoj , Strubbe Filip , Beunis Filip , Neyts Kristiaan
Published: March 2021

Correction for ‘Space charge limited release of charged inverse micelles in non-polar liquids’ by Manoj Prasad et al., Phys. Chem. Chem. Phys., 2016, 18, 19289–19298, DOI: 10.1039/C6CP03544B.
Reactivity of a T-shaped cobalt(i) pincer-complex
Authors: Matveeva Regina , Blasius Clemens K. , Wadepohl Hubert , Gade Lutz H.
Published: March 2021

A paramagnetic T-shaped cobalt(i) complex, stabilised by a monoanionic NNN pincer ligand, induces reductive bond cleavage and related transformations of small molecules.
Significantly boosted oxygen electrocatalysis with cooperation between cobalt and iron porphyrins
Authors: Lei Haitao , Zhang Qingxin , Wang Yabo , Gao Yimei , Wang Yanzhi , Liang Zuozhong , Zhang Wei , Cao Rui
Published: March 2021

The (Co–P)0.5(Fe–P)0.5@CNT catalyst displayed high activity and selectivity for the four-electron reduction of O2, which is a result of having both Co and Fe porphyrins on CNTs.
An application of micro X-ray fluorescence computed tomography for the determination of three-dimensional elemental distribution in a single hair strand
Authors: Kondo Ryosuke , Yamato Takuma , Munoz-Noval Alvaro , Honda Sadao , Nishiwaki Yoshinori , Komaguchi Kenji , Hayakawa Shinjiro
Published: March 2021

Concentrations of Zn and Br along the hair strand, and CT images.
Nitrogen and chlorine co-doped carbon dots with synchronous excitation of multiple luminescence centers for blue-white emission
Authors: Huang Jiahao , Dong Chen , Xu Jiahui , Xuan Jun , Cheng Qin , Bi Hong
Published: March 2021

N,Cl-CDs emit the blue-white lighting, which synchronously contains the two ranges of wavelength that the chloroplast needs for photosynthesis.
Zinc salt-catalyzed reduction of α-aryl imino esters, diketones and phenylacetylenes with water as hydrogen source
Authors: Shen Guoli , Liu Haojie , Chen Jingchao , He Zhenxiu , Zhou Yongyun , Wang Lin , Luo Yang , Su Zhimin , Fan Baomin
Published: March 2021

The zinc salt-catalyzed reduction of α-aryl imino esters, diketones and phenylacetylenes with water as hydrogen source and zinc as reductant was successfully conducted.
Facilitated inversion complicates the stereodynamics of an SN2 reaction at nitrogen center
Authors: Papp Dóra , Czakó Gábor
Published: March 2021

Multiple-inversion, the analogue of the double-inversion pathway recently revealed for SN2@C, is the key mechanism in SN2 at N center undermining stereospecificity.
Rhodium-catalyzed cascade reactions of triazoles with organoselenium compounds – a combined experimental and mechanistic study
Authors: Li Fang , Pei Chao , Koenigs Rene M.
Published: March 2021

Herein, we report on our studies on the reaction of organoselenium compounds with triazoles under thermal conditions using simple Rh(ii) catalysts.
The exon junction complex core factor eIF4A3 is a key regulator of HPV16 gene expression
Authors: Meznad Koceila , Paget-Bailly Philippe , Jacquin Elise , Peigney Anne , Aubin François , Guittaut Michaël , Mougin Christiane , Prétet Jean-Luc , Baguet Aurélie
Published: March 2021

High-risk human papillomavirus (hrHPVs), particularly HPV16 and HPV18, are the etiologic factors of ano-genital cancers and some head and neck squamous cell carcinomas (HNSCCs). Viral E6 and E7 oncoproteins, controlled at both transcriptional and post-transcriptional levels, drive hrHPVs-induced carcinogenesis. In the present study, we investigated the implication of the DEAD-box helicase eukaryotic translation initiation factor 4A3 (eIF4A3,) an Exon Junction Complex factor, in the regulation of HPV16 gene expression. Our data revealed that the depletion of the factor eIF4A3 up-regulated E7 oncoprotein levels. We also showed that the inhibition of the nonsense-mediated RNA decay (NMD) pathway, resulted in the up-regulation of E7 at both RNA and protein levels. We therefore proposed that HPV16 transcripts might present different susceptibilities to NMD and that this pathway could play a key role in the levels of expression of these viral oncoproteins during the development of HPV-related cancers.
Stability of Speech Intelligibility Measures Over Repeated Sampling Times in Speakers With Acquired Apraxia of Speech
Authors: Vitti Emilia , Mauszycki Shannon , Bunker Lisa , Wambaugh Julie
Published: March 2021

Purpose

The purpose of this investigation was to measure the test–retest stability of single-word intelligibility in a group of 28 speakers with chronic apraxia of speech and aphasia.

Method

The Assessment of Intelligibility of Dysarthric Speech was administered twice to each participant, with samples separated by 1 week. Scoring of recorded samples was completed independently by three expert listeners using transcription and multiple-choice scoring formats.

Results

Percent intelligible words was very similar for the group over the two sampling times for both scoring formats (i.e., within 1.5%), with no statistically significant differences found between times. Statistically significant, very strong, positive correlations were found between sampling times for intelligibility scores. Transcription and multiple-choice scores were strongly, positively correlated, with multiple-choice scores being statistically higher. There was a statistically significant difference between mean transcription and multiple-choice scores for the group at Time 1 and Time 2. Individual performance was similar to group performance for the majority of participants.

Conclusions

These findings indicate that single-word intelligibility measures are stable over repeated sampling occasions. Stability was evident for transcription and multiple-choice scoring methods.

Supplemental Material

https://doi.org/10.23641/asha.14226737
Quadrature differential output six‐port rat‐race coupler
Authors: Harada Michihiro , Hayashi Hitoshi
Published: March 2021

This letter describes a design method for a six‐port rat race circuit to obtain quadrature differential waveforms from a single end. The proposed six‐port rat‐race coupler succeeded in low insertion loss and wide bandwidth by using a 1/2 wavelength transmission line and an open stub. Over the frequency range from 0.89 to 1.05 GHz, a prototype 0.96‐GHz‐band six‐port rat‐race coupler was confirmed to have a transmission loss of 7.03  ±  0.45 dB, a reflection loss and isolation of 15 dB or more, and a phase error of within ± 3.3 ○.
Comprehensive practical evaluation of wired and wireless internet base smart grid communication
Authors: Zeinali Mehdi , Thompson John
Published: March 2021

Internet‐based communications is a key solution for enabling low‐cost and scalable communication infrastructure for different applications of the smart grid. However, the performance of this network needs to be evaluated practically in the context of smart grid applications based on key metrics such as latency and reliability. This article is a comprehensive evaluation of the United Kingdom Internet network characteristics which will allow the smart grid systems designer to consider the essential parameters for communication applications. This article will focus not only on three smart grid applications, but also the outcome of this research which is relevant to a wider range of Internet of Things (IoT) applications. Different combinations of off‐the‐shelf wired and wireless last‐mile communication technologies are evaluated using real‐world transport protocols such as the Transport Control Protocol (TCP)and the User Datagram Protocol (UDP). The performance of TCP/UDP has been tested in a realistic client‐server communication test‐bed. The results from extensive evaluations show that typical latency values are between 200 and 600 ms for data packets and 50 bytes and  kbytes for short control packets. Moreover by applying data compression techniques ,the results can be improved about 5%–20% for different last mile communications.
Development of a DP980 steel with low cooling rate requirement
Authors: Pan Libo , Tan Wen , Zhou Wenqiang , Wang Junlin
Published: March 2021

DP980 is a promising light-weightening material in car body. To avoid high investment of strong cooling system, a new DP980 steel with low cooling rate requirement was developed. The mechanical properties and microstructure were analyzed under different manufacturing process. It could be concluded that the chemical composition design should be reasonable and of low cost to achieve both high strength and also austenite to martensite transformation at low cooling rate. Strength increased with coiling temperature decreasing during hot rolling, and higher annealing temperature and lower over aging temperature were favourable to higher strength. The austenite-martensite transforming could be completed at even lower rapid cooling rate of 20°C/s. Through optimized manufacturing process parameters, the new DP steel product with good mechanical properties could be obtained successfully, which provided a new option for normal production line to produce ultra high strength steel.
Research on Frequency Adaptability of Photovoltaic Power Generation
Authors: Tingyi He , Shengnan Li , Shuijun Wu , Xian Meng , Runzhi Mu
Published: March 2021

In this paper, photovoltaic power generation(PV) and the asynchronously grid-connected power grid are taken as the research objects, and the frequency adaptability of PV to power grid is studied. The influence mechanism of grid frequency variation on PV is revealed, and it is proposed that the frequency tolerance range of PV is mainly determined by the setting value of inverter protection and PLL parameters. The whole process simulation of wind turbine adaptability under frequency change is realized on Matlab/Simulink, and the simulation results verify the correctness of the conclusion.
Research on the construction plan layout of the combined Hydrogen and CNG refueling station
Authors: Wang Xiaotong , Liu Nana
Published: March 2021

Research on fuel cell hydrogen refueling stations is mostly concentrated on newly-built stations, and there are few studies on the combined hydrogen and CNG refueling stations. The construction plan of combined hydrogen and CNG refueling stations is conducive to planning and layout, solving the difficulties in land use of hydrogen refueling stations, and reducing construction investment and operating costs. This paper analyzes the feasibility of the combined station construction, studies the construction plan and scale of the combined station, and proposes its general layout plan.
Study on the technical and economic feasibility of echelon use of waste power batteries used in new energy vehicles in China
Authors: Zhenbiao Li , Yuke Li , Wei Pan , Jia Wang
Published: March 2021

The echelon use of power batteries is considered as an efficient recycling method which can effectively extend the service life of power batteries and reduce costs. The echelon use of power batteries is encouraged by national policies and widely concerned in the industry so it has quickly became a hot spot among the issue about industry development. This article compares and analyzes the battery standard requirements for power batteries and the intended application fields of echelon use and the economics of using lead-acid batteries and decommissioned power batteries in different application fields. This article initially draws the conclusions about the technical and economic feasibility of echelon use of power batteries.
Probabilistic Safety Analysis for Loss of Offsite Power Accident in Dual-units Nuclear Power Plant
Authors: Feng Wanxin , Xu Zhixin , Zhang Mingzhu , Yu Yu
Published: March 2021

In order to explore the risk assessment method of the multi-unit nuclear power plant site, this paper selects the dual-unit plant nuclear site to analyze lose off-site power accident. By combining and improving the single-unit ET/FT model, to establish the dual-unit ET/FT model. From the analysis of the accident sequence, it can be concluded that the common cause failure of equipment is the main challenge faced by the dual-units. Especially the RPC sub-channel in the reactor protection system and the failure of emergency diesel engine circuit breaker. As can be seen from the high proportion of core CD occurring simultaneously in both uints, it has a great significance to study the risk of mult-units sites.
A Review of Pathways to Carbon Neutrality from Renewable Energy and Carbon Capture
Authors: Zhao Qianji
Published: March 2021

The greenhouse gas represented by carbon dioxide is having a negative impact on the earth's ecology. The goal of carbon neutrality is to reduce carbon emissions to zero through complete elimination or dynamic balance. Therefore, achieving the goal of carbon neutrality is conducive to restoring the earth's ecology and reducing global temperature. The main ways to achieve carbon neutrality include the use of renewable energy to replace fossil energy and carbon capture and sequestration. There is no carbon dioxide involved in the process of renewable energy production, and carbon capture and storage can directly eliminate carbon dioxide. This article reviews the ways to achieve carbon neutrality: the status quo, advantages and disadvantages of renewable energy and carbon capture and sequestration, and analyzes the current development and problems and challenges of carbon neutrality through examples.
Technology of eliminating outburst by downward drilling in highground pressure and serious outburst area
Authors: Yi Enbing
Published: March 2021

The high-drainage roadway construction face of the working face is used to pre-drill the borehole under the tunneling face, and the problem of poor water return in the hole is solved by grouting the surrounding rock cracks in the deep and shallow holes of the drill floor. The “two plugs and one note” sealing method was adopted to ensure that the sealing holes were tight and airtight; the water pipes were blown all the way in the hole, and the single hole, grouping and timed water blowing work targets were realized, and the drilling effect of the downhole drilling was improved. A set of efficient and rapid down-drilling and hole-dissipation management mode has been formed, which has achieved the goal of high-efficiency outburst of coal seams and technical and economic integration in areas with high ground pressure and serious safety and economic benefits.
Abnormality detection method for transmission lines based on video code stream analysis
Authors: Guanyao Wang , Xu Wang
Published: March 2021

As the demand for electricity continues to grow, the coverage of transmission lines is getting larger. Despite the continuous improvement of the grid system, transmission lines are still vulnerable to various natural disasters. At the same time, many transmission lines are installed in areas with harsh environments and other places that are difficult for operation and maintenance personnel to reach, which brings huge challenges to the operation and maintenance of transmission lines. Therefore, how to effectively detect the status of the transmission line and ensure the normal operation of the power grid has become an important research topic in the power system. The existing video surveillance-based methods need to decode the video, which has poor real-time performance. Therefore, this paper proposes a transmission line abnormality monitoring method based on video stream analysis. Using the extracted parameters for judgment before decoding the video stream can effectively improve the real-time performance of online monitoring of the transmission line and greatly shorten the time required for abnormal alarms.
Application of air energy heat pump in brood production of closed yellow-feathered chicken house
Authors: Chenming Hu , Han Pen , Li Yang , Chaowu Yang , Xia Xiong , Xiaoyan Song , Chunlin Yu , Zengrong Zhang , Mohan Qiu , Bo Xia , Jialei Chen , Longhuan Du
Published: March 2021

The aim of the study was to compere the effects of using air energy heat pump, flue heating and water heating as brood heating system on brood production of yellow-feathered broilers. In the experiment, three heating methods were used to heat chicks, and the parameters such as heating time, temperature uniformity, concentration of poisonous and harmful gases in the house, chick weight gain, mortality rate and production benefit were compered and analyzed. The results showed as follows: 1. There was no significant difference in NH3 and H2S concentration among the three groups (P > 0.05). The CO2 concentration in the flue group was significantly higher than that in the other two groups (P < 0.01), and there was no significant difference in CO2 concentration between the other two groups (P >0.05). 2. The body weight of chickens in the flue group at 30 days of age was the lowest, which was significantly different from that in the other two groups (P < 0.01); The air energy heat pump group had significant difference with coal fired boiler group (P < 0.05), the uniformity and survival rate of flue group were the lowest, and the air energy heat pump group had the best; 3. The temperature rise of honeycomb flue was the slowest, the temperature distribution uniformity was the worst, and the cost was the highest; The heating rate of coal-fired boiler was faster than that of flue, and the temperature distribution uniformity was better, and the cost was lower. The heating rate of air energy heat pump was the fastest, and the temperature distribution uniformity was better, and the operating cost was the lowest. 4. The air energy heat pump group has higher investment in the early stage, better use effect, better production performance of brood, long service life and lower brood cost.
Application Research on Energy Saving Technology of Waste Heat Recovery and Defrosting for Low Temperature Cold Storage
Authors: Guangpeng Li , Yanrui Zhou , Liwen Sun
Published: March 2021

In this paper, a glycol defrosting system using waste heat exhaust from refrigeration compressor is designed. The defrosting numerical model, heat transfer model and frost growth model were established. The frost thickness, defrosting heat consumption and ethylene glycol flow rate were calculated, and the ethylene glycol pipeline was designed. The project solves the problems of traditional defrosting of cold storage, such as high power consumption, fluctuation of storage temperature, hidden danger of safety, high condensation temperature and low efficiency of refrigeration system.
Design of Intelligent Feeding Control System Based on S7-1200 PLC
Authors: Feng Tian , Guangpeng Li
Published: March 2021

In order to satisfy the needs of pig breeding, an intelligent feeding control system based on S7 1200PLC is designed in this paper. The design scheme selects Siemens S7-1200 PLC as the main controller and MCGS TPC7062TI touch screen as the man-machine interface. The article has carried on the electrical design, including I/O address allocation, the main circuit design, the control circuit design and so on, and has written the PLC control program in the debugging mode and the operation mode, finally has designed the man-machine interface to realize the configuration of the system using MCGS. After the actual operation, the system runs stably, safely and reliably, has achieved the expected goal, and has a certain prospect of popularization and application.
Research on Optimization of Linkage Operation of Integrated Energy System in Industrial Parks based on Chaotic Particle Swarm Algorithm
Authors: Yang Yang , Hu Mengjin , Wei Mengju , Wang Yongli , Zhou Minhan , Ma Yuze
Published: March 2021

Industrial parks cover a variety of production capacities and energy-consuming entities, with large load demand and complex energy-using structure, and common problems such as low energy utilization efficiency and unreasonable energy structure. The construction of an integrated energy system (IES) with a combined cooling, heating and power system as the core unit in the industrial park is of great significance for achieving reliable, efficient and clean energy use in the park. Therefore, this article is based on the integrated energy system of the industrial park, aims at the lowest total cost of park operators, and considers the constraints of grid node balance, equipment output and energy storage equipment, and constructs source-grid-load-storage linkage operation optimization model, and build a chaotic particle swarm algorithm (CPSO) to solve the model. Finally, a typical industrial park in my country is taken as an example to analyze the scientificity of the model.
Experimental Investigation on Start-up and Isothermal Performance of Thermosyphon with Noncondensable Gas
Authors: Ren Bin , Zhu Xuchen , Du Yannan , Pu Zhe , He Aini , Lu Hongliang
Published: March 2021

Steel-water gravity heat pipe has been widely used in industry because of its low cost and wide applicable temperature range. Steel-water incompatibility can produce hydrogen as a non-condensable gas, seriously weakening the heat transfer capacity. In this paper, the start-up and isothermal performance of thermosyphon with noncondensable gas were studied by experimental methods, and the effect of gas ratio on the start-up and isothermal performance was quantitatively analysed. The results show that the larger gas ratio will increase the start-up time and the working temperature. The wall temperature of evaporation section is higher than that of adiabatic and condensation section. The distributions of wall temperature in the evaporator and adiabatic sections are uniform. The non-isothermal phenomenon only occurs in the condenser section.
Analysis on Spatial-Temporal Change of Construction Mechanics of Long-Span Disaster-Proof Half-Tunnel Structure System
Authors: Ma Xiaojun , Xia Shihua
Published: March 2021

Largely-rolling hills are widely distributed in China. In these areas, high-cut slope is common in road construction. Such form of construction usually causes excessive disturbance to hills and serious damage to vegetation, which is easy to induce natural disasters and affect traffic safety in the operation period. In order to protect the natural environment and prevent natural disasters, a new type of tunnel structure - long-span disaster-proof half-tunnel structure system -is increasingly used in highway tunnels. This type of structure involves a variety of constructions, necessitating a process of structural system conversion. For this reason, construction mechanics is unknown. In the context of the half-tunnel structure system of an expressway, this paper establishes 11 spatial-temporal conditions using the Load Release Coefficient of Slope, performs the coupled simulation of the half-tunnel combined system with the most unfavorable section through numerical calculation, analyzes the changes in the construction mechanics of the combined system under different working conditions, and proposes the good timing for construction of half-tunnel structure system according to the monitoring and measurement data obtained from the construction site. The result shows that the half-tunnel structure system is a system combining side slopes, backfilled masses and half-arch inclined-column structure, which interact with each other. The half-tunnel construction should allow for the coordination of the three combination factors. With an eye to assuring the safety and stability of structure system and making the structure solution economically feasible, it is supposed to be a good time to start the construction of half-tunnel structure system when about 70% of the stress inside slopes is released.
Harmless treatment method of dead chickens in scale chicken farm
Authors: Yu Chunlin , Xia Bo , Qiu Mohan , Du Longhuan , Zhang Zengrong , Song Xiaoyan , Xiong Xia , Hu Chenming , Yang Li , Yang Chaowu
Published: March 2021

The harmless treatment of dead chickens is an important content in poultry production. This paper compared the effects of the harmless treatment of dead chickens by adding different disinfectants, including quicklime and calcium hypochlorite. The results showed that both quicklime and calcium hypochlorite could increase the total bacteria content, improve the harmless treatment capacity, and shorten the killing time of Escherichia coli and Staphylococcus aureus. The effect of quicklime was better than that of calcium hypochlorite. The experiment provided practical guidance for harmless treatment of scale chicken farm.
The design of interactive installation for environmental education on climate change in Antarctic based on open-source programming language
Authors: Huiqing Li
Published: March 2021

With the advancement of modern technology and the growing development of new media technology, the computer technology programming language has been increasingly applied to the world of art. Meanwhile, the scientific technology, design art and the growing aesthetic standard have promoted the development of the art of new media interactive installation. With the accelerated global warming and sea level rise, the coastal areas are confronting a great risk. On a case study of the “The vanishing Antarctic continent”, the paper discussed the creation of interactive installation art design with social significance through the computer programming language, calling for the environmental protection while stimulating the human-computer interaction and resonance.
Determination on Outdoor Stocking Density of Free-range Broilerin Different Ecosystems Based on Nitrogen Cycling
Authors: Yang Chaowu , Qiu Mohan , Du Longhuan , Zhang Zengrong , Song Xiaoyan , Xiong Xia , Hu Chenming , Yang Li , Yu Chunlin
Published: March 2021

The free-range broiler production is an effective combination of ecological and economic benefits. However, excessive stocking will inevitably lead to a variety of negative effects, such as the destruction of vegetation, the hardening and even acidification of soil. It is very important to determine the reasonable stocking density for free-range broiler. In this paper, the outdoor feeding density of free-range broiler in different stocking ecosystems based on the nitrogen cycling was proposed combination of theoretical derivation and investigation and research, and proved the correctness of the research idea and density parameters through empirical research, which provided the key technical parameters for scientific guidance of free range chicken production.
Analysis on the Evolution Trend of Seawater Quality and Eutrophication in Tianjin Hangu Agricultural and Fishery Area from 2010 to 2019
Authors: Chen Yi
Published: March 2021

Through the collection and analysis of COD, dissolved inorganic nitrogen (DIN) and active phosphate monitoring data in Tianjin Hangu Agricultural and fishery area from 2010 to 2019, this paper analyzed and studied the structure of nutrients and the state of eutrophication. The results show that in recent ten years, the water quality of Tianjin Hangu Agricultural and Fishery Area has basically met the water quality requirements of functional area, the regional nitrogen pollution has been suppressed, and the eutrophication index of sea area has shown a decreasing trend year by year, but the nitrogen and phosphorus nutrient structure is still in the state of “phosphorus restriction”. Pollution control of sea areas and conservation of aquatic germplasm resources are still urgent.
Relationship Between Water Birds’ Number and the Temperature in Beijing Wetland: A Case Study on Cuihu Wetland
Authors: Yu Rujin
Published: March 2021

Beijing is an important transfer station of bird migration, and its function as a bird habitat is very significant. Wetland birds have an extremely high reference value as ecological indicators and are greatly affected by climate change. This study takes waterbirds in Beijing Cuihu Wetland Park as the research object, carries out a statistical analysis of the number of birds in each year, and summarizes the relationship between them and Beijing's climate change. The results showed that Anatidae and Ardeidae accounted for a substantial part of wetland waterfowl, and their number was increasing year by year. There was a significant correlation between the monthly average number of two kinds of waterfowls and the average monthly temperature, and the negative correlation was found between the number of Anatidae and the average monthly temperature. The number of Anatidae and Ardeidae in spring and autumn are related to the monthly average temperature, seasonal average temperature and annual average temperature of the previous year.
Innovative design of community care services based on the concept of environmental sustainability
Authors: Liu Tao , Jiang Taijiao , Liu Mengqian , Ou YangYang
Published: March 2021

China’s rural elderly population continues to grow, and rural elderly care faces more severe challenges than cities. The rapid growth of rural demand for elderly care services means that more resources are needed, and the process of depletion of a large amount of resources inevitably has an adverse impact on the environment. The green development and sustainable design concepts proposed in the design field can reduce the waste of resources and reduce the greatest impact of humans on the environment, and promote the harmonious development of man and nature. Therefore, this article applies environmental sustainability concepts and service design concepts to rural community elderly care services , to innovate the existing community pension service system. Based on the analysis of the behavior and demand characteristics of the elderly in rural areas, this paper proposes an innovative design case of sustainable elderly care community service combining community resources with the full potential of the elderly, which provides reference and inspiration for the construction of an elderly care community service system in rural areas.
Numerical simulation of atomization and combustion characteristics of high-moisture organic wastewater
Authors: Ding Jing , Tang Qiang , Zhang Tengfei
Published: March 2021

The combustion method, due to its convenience and high-efficiency in harmless treatment, has been widely used in disposal of wastewater. With a wastewater burner as the study case, we performed numerical simulation by the Fluent software, analyzed the flowing and combustion process of the wastewater samples in the burner, compared the combustion effect of different atomization conditions — the spray cone model (hollow cone model, solid cone model), the spray angle, non-uniform grain size, uniform grain size. The study aims to provide suggestions for design and selection of wastewater burners.
Modeling digital main control room operator’s resilience under extreme conditions: An Experiment design scheme
Authors: Hanguan Wen , Zhihui Xu , Ke Xue , Chenyu Jiang , Ming Yang
Published: March 2021

Human reliability is one of the most important factors that make effects in nuclear power plant(NPP) operation. In advanced digital NPP main control room with high levels of automation, the systematic operation which require a sufficient mental workload to address those undesired events has become a critical challenge for operators. The aim of this research is to identify the operator’s reliability by developing a resilience model. In this work, a seven-stage technique framework is proposed, which includes the skeleton of theoretical analysis, experimental design and hardware setting to how to establish the model for NPP operator in a downsize main control room cabin. The resilience model for operators’ reliability via assessing their basic skill tasks performance and evaluating their cognitive workload in the framework hence can be used for assessing the level of training of the new employed operators as well as human reliability in other critical process industries.
Vertically oriented MoS2 nanosheets with vast exposed edges for enhanced electrocatalytic hydrogen evolution
Authors: Han Meisheng , Yu Jie
Published: March 2021

Molybdenum disulfide (MoS2), a typical two-dimensional transition metal dichalcogenides, is a promising candidate for electrochemical water splitting catalysis due to its ultrahigh special area and highly exposed active edge sites. The main challenges restricted the wider application for MoS2-based nanomaterials are the complex preparation process and the high overpotential. Here, we design a novel and facile sealed vessel to synthesize vertical oriented MoS2 nanosheets electrocatalyst with vast exposed edges. Benefiting from the unique vertically-oriented structural and compositional characteristics, the MoS2 nanosheets with 10-20 layers exhibits superior hydrogen evolution reaction (HER) performance with a small overpotential of 135.2 mV at a current density of 10 mA∙cm-2 and low Tafel slope of 82.5 mV∙dec-1 as well as extraordinary catalytic stability over 5000 cycles. Importantly, the sealed vessel reactor system may open up a versatile and potential synthetic way to construct various morphologies and structure of metal dichalcogenides for high-performance energy storage and conversions devices.
Novel coronavirus pneumonia based on the DingTalk platform teaching method in the teaching of Pathogenic Biology
Authors: Song Bo , Sun Yan , Guo Junjie , Zhao Dan , Tan Jiayin
Published: March 2021

Objective: To evaluate the teaching method based DingTalk combined PBL teaching method and CBL teaching method in the teaching of pathogenic biology under novel coronavirus pneumonia enviroment. Methods: 48 undergraduates of grade 2018 were selected as the experimental group, and 48 undergraduates of grade 2017 were selected as the control group. After class, the theory test and microbiological test knowledge test and questionnaire were as the assessment index. Results: the scores of mastering microbial inspection knowledge and satisfaction in the experimental group were significantly higher than those in the control group, and the difference was statistically significant (P < 0.05). Conclusion: compared with the traditional teaching method, PBL + CBL teaching method based on DingTalk platform is more popular with students, which can mobilize their learning initiative and improve their ability.
The Influence of Equity Incentive on Overinvestment in enterprises: The moderating effect based on the heterogeneity of executive team
Authors: Liu Wei , Yang Tingting , Le Xiao
Published: March 2021

This paper empirically examines the moderating effect of executive team heterogeneity on the influence of equity incentive on overinvestment behavior by using the data of Chinese A-share listed companies in Shanghai and Shenzhen from 2014 to 2018. The results show that equity incentive can restrain the overinvestment behavior of enterprises; The greater the age heterogeneity of the senior management team, the weaker the influence of equity incentive on overinvestment will be; The greater the gender heterogeneity of the senior management team, the greater the influence of equity incentive on the overinvestment of enterprises will be. The heterogeneity of executive team education and tenure has no effect on the relationship between equity incentive and overinvestment. The conclusion of this study has some enlightenment on how to construct and optimize the senior management team of listed companies, so that the senior management team can play its role fully and make reasonable and effective investment decisions.
In-depth Study of Pharmacology Teaching Reform Based on Ability Training under the Framework of American DQP
Authors: Cao Hua , Chen Huifang , Tu Yiting , Zheng Peilin , Yi Jianhua , Xia Hong , Ning Yuqi
Published: March 2021

With the rapid development of economy in China, the pharmaceutical industry rises quickly. Although China’s higher medical vocational education develops fast, there are many problems in the current traditional teaching mode and curriculum system, which cannot meet the needs of students. How to reform the education mode under the background of informatization is becoming the focus of vocational education reform in recent years. In this paper, we discussed the teaching effectiveness of DQP framework, an international advanced talent training system of higher vocational education. We found that by choosing reasonable integration of teaching content, different teaching methods, it is in line with the requirements of the times. It facilitates the establishment of pharmacology curriculum standards, the organization of the compilation of pharmacology textbooks which contains the latest knowledge, the use of student-centered flipped classroom teaching mode to improve students’ autonomous learning ability, etc..
Metabonomics research accelerates discovery of medical biomarkers
Authors: Cai Yanning , Dong Qian
Published: March 2021

Biomarker refers to a characteristic that can be objectively detected and evaluated, and can be used as an indicator of normal biological process, pathological process or therapeutic intervention pharmacological response. As one of the key words of individualized medicine, the search and discovery of valuable biomarkers has become a research hotspot in the current medical field.
Targeting Cystic Fibrosis: A review from Pathogenesis to Innovative Clinical Strategies
Authors: Liu Yiran
Published: March 2021

Cystic fibrosis is a hereditary disease caused by mutation in cystic fibrosis transmembrane conductance regulator (CFTR) gene, which controls CFTR proteins. Many are or have been threatened by this rare but life-threating disease, therefore, more attention should be paid to better solve this public health issue. Here we provide a thorough review about cystic fibrosis in the aspects of disease pathogenesis, clinical manifestation as well as clinical therapeutics to achieve a deeper understanding of this disease. Among the demand of innovative clinical strategies, appearance of the combination drug trikafta is a promising sign of better dealing with cystic fibrosis.
New Approved First-line Combining Therapy of NSCLC in 2020
Authors: Wang Nianwu , Wang Wei , Mao Wenli , Wang Kefeng , Zhang Haozhe , Ma Qiang , Kuerbantayi Nazuke , Wang Yukun
Published: March 2021

In the past decades, lung cancer is considered one of the lethal cancers all across the world due to its evidenced greatest mortality and morbidity. Currently, the main clinical treatment methods for lung cancer involve surgery, chemotherapy, radiotherapy, anti-angiogenesis inhibitors and tyrosine kinase inhibitors. In the field of anticancer drugs, a variety of new anticancer drugs have been emerging in recent years. They include chemotherapy drugs with new delivery modes, targeted drugs for tyrosine kinase inhibitors, angiogenesis inhibitors, and immunotherapy drugs that have remained hot. But because cancer cells have complex escape mechanisms, the effectiveness of these single-drug treatments has been disappointing. In this case, a number of new combination therapies have emerged and achieved relatively good results. According to the 2020 third edition of the NCCN guidelines, four multi-therapy regiments (Erlotinib plus ramucirumab, Erlotinib plus bevacizumab, Carboplatin plus albumin-bound paclitaxel plus atezolizumab and Nivolumab plus ipilimumab) have passed clinical trials, adding first-line treatments. In this review, the research provided an overview of these four new approved combining treatment strategies in addition to predicting future drug development directions.
Analysis of the role of autopsy teaching in the context of precision medicine
Authors: Fan Yan , Feng Chengan
Published: March 2021

Autopsy is the foundation of general anatomy teaching and learning, and an indispensable part of medical education, and anatomy is the cornerstone of medical courses. Autopsy is an indispensable and important way to improve the quality of anatomy teaching. Nowadays, with the application of computer technology, the rapid development of molecular biomedicine and the emergence of other reasons, the status and function of autopsy in anatomy teaching have changed to varying degrees. Over the years, the reform of autopsy teaching has been continuously developed and updated. How to improve the effectiveness of autopsy teaching is an important course that requires us to study carefully. In the information age, autopsy teaching is affected by modern teaching techniques and methods. In addition, the source of corpses is very scarce and difficult to preserve. Most colleges and universities gradually adopt different teaching methods to replace autopsy teaching. In the context of precision medicine, autopsy teaching is in an irreplaceable position. This article starts with the importance of autopsy in anatomy teaching, discusses the current situation and future development direction of autopsy in anatomy teaching, and provides necessary help for further deepening the reform of autopsy education and teaching.
Probing the interaction mechanism between Direct Red 80 and Human serum albumin: studies at the molecular level
Authors: Song Yan , Shi Yuzhi , Zhang Kejia
Published: March 2021

In recent years, azo dyes have received increasing attention due to their adverse effects on the environment and consumer health. However, the interaction mechanism between human serum albumin (HSA) and Direct Red 80 (DR80) is still unknown. The results showed that DR80 changed the secondary structure of HSA and made HSA skeleton loose and stretch. In addition, DR80 quenched the endogenous fluorescence of HSA by static quenching and changed the microenvironment of Trp in form of the hydrophobicity increased and the polarity decreased. Molecular docking results indicated that DR80 bound to the interface of three α-helical domains of HSA, hence, the changes in HSA structure and conformation was the main reason for the decline of its esterase activity. This work was done to illuminate the binding mechanism of DR80 and HSA, and to provide a different way for screening the low toxic dye at the molecular level.
Study on comprehensive index system of production safety accident in chemical enterprise
Authors: Yu Yinglei , Cheng Lin , Wu Fei , Zhu Fangyan
Published: March 2021

This paper classified, extracted and characterized the causes of accidents based on accident statistics of chemical enterprises in Jiangsu Province from 2015 to 2019. The internal relationship between the accident result and various causes is analyzed from the aspects of human, machine, material, method, ring and pipe; and using the analytic hierarchy process to establish the comprehensive evaluation index system of the accident, which was applied to predict the accident probability of chemical enterprise. The probability of production safety accident in a chemical enterprise is predicted by using this method, and the probability of the accident is at level of "more likely to happen". The example showed that the analytic hierarchy process has strong operability and good effect, and can be used to predict the accident risk of chemical enterprises. causes and can realize the accident probability prediction of chemical enterprises.
Annual inspection of pressure vessel
Authors: Du Yannan , Zhu Xuchen , Ren Bin , Tang Xiaoying
Published: March 2021

This paper systematically discusses the significance of pressure vessel inspection, defines the main body of annual inspection of pressure vessel, and puts forward the matters needing attention in the process of annual inspection according to the existing annual inspection situation, so as to provide a certain reference for the smooth development of annual inspection of pressure vessels.
Study on flexible structure with waterproof, breathable and thermal insulation in concrete construction
Authors: Zhou Junyou , Wen Peiyin , Li Hu , Lu Yongjie
Published: March 2021

with the development scale of urbanization construction in China, the technical standard of concrete construction is getting higher and higher. It is the key breakthrough direction of technology to strengthen waterproof and air permeability in concrete construction. Nonwoven formwork lining technology is a way to improve the impermeability of concrete structure surface to achieve the overall durability of concrete structure. Some hydrated residual water and large bubbles of concrete at a certain depth of surface layer are discharged, thus reducing the water-cement ratio of concrete, realizing the compactness of structural surface, increasing the strength and hardness of concrete surface, and achieving the purpose of improving the performance of surface concrete. This paper mainly analyzes the flexible structure of waterproof, breathable and heat preservation, and puts forward personal views and viewpoints.
Application of Carbon Quantum dot Fluorescent Materials in Metal Ions Detection
Authors: Gao Yan , Han Li , Gao Xing , He Wen , Chu Ranran , Ma Yefei
Published: March 2021

The research situation of the application of carbon quantum dot fluorescent materials to the detection of metal ions, including the current research status and preface of recent years, and development trends are summarized. The application of carbon quantum dot fluorescent materials to the detection of metal ions is highlighted, including iron ions, copper ions, mercury ions, lead ions, and silver ions. Finally, the problems and development prospects of carbon quantum dot fluorescent materials for detecting metal ions are discussed.
Study on the Adsorption of Nickel (II) in Water by Modified Dried Duckweed
Authors: Qu Yanping , Li Xinjun , Lin Lin , Wang Shouge , Guo Min , Dong Wenchan
Published: March 2021

The paper uses dry duckweed before modification and dry duckweed modified with formaldehyde and concentrated sulfuric acid as adsorbents to adsorb and remove nickel ions in water. The results show that the removal rate increases with the increase of temperature. When the reaction time is 70 min, the concentration of nickel is 20 mg/L, and the dosage is 0.05 g, the removal rate of nickel ion by the duckweed adsorbent is 35.01%. When the reaction time is 30 min, the concentration of nickel is 20 mg/L, and the dosage of modified duckweed is 0.1 g, the removal rate of nickel ion by the modified duckweed adsorbent is 44.85%. The adsorption effect of the modified adsorbent is obviously improved, which provides a basis for the application of duckweed in the adsorption of nickel - containing wastewater.