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A new portable open-path instrument for ambient NH_(3) and on-road emission measurements

Journal of Environmental Sciences 2024年第2期136卷 606-614页

作者： Wenhao Dai Shanshan Wang Sanbao Zhang Jian Zhu Chuanqi Gu zhibin sun Ruibin Xue Bin Zhou Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention(LAP3) Department of Environmental Science and EngineeringFudan UniversityShanghai 200438China Institute of Eco-Chongming(IEC) Shanghai 202162China Institute of Atmospheric Sciences Fudan UniversityShanghai 200433China

Increased attentions to vehicle emission of NH_(3)have been paid since it is generally regarded as an important source in urban areas.Here,we developed a movable instrument based on Differential Optical Absorption Spectroscopy(DOAS)principle for detecting on-road NH_(3),which can avoid the losses in the sampling process attributed to the non-sampling methods.For this mobile DOAS,the temporal resolution,detection limit and relative error for NH_(3)were 1 min,2.29 ppbv and 4.57%±2.44%,respectively.By employed to the on-road measurements along the arterial highway in Shanghai,the spatial distributions of NH_(3)and NO were obtained,and their dependence of traffic and road conditions were studied.The slopes of linear regression between NH_(3)and NO were 0.40,0.02 and 0.07 on the Middle Ring Road,Outer Ring Road and Chongming Island Ring Road.It indicates that light gasoline vehicles(LGVs)were found to be the main contributor to NH_(3)emissions,while heavy-duty diesel vehicles(HDVs)mainly emitted NO.Based on the measured NH_(3)in the tunnel,the mileagebased NH_(3)emission factor per vehicle was estimated to be 17.9±6.3 mg/km.The reported open-path instrument can be broadly used in on-road pollutant monitoring or vehicle emissions,and the measurements can reveal the real situation of emission characteristics,even find the abnormal operations of vehicle catalyst system.

关键词： Ammonia Traffic emissions DOAS Emission factor Mobile measurements

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Genetic parameters estimation for growth traits in cultured tiger pufferfish(fugu),Takifugu rubripes

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Acta Oceanologica Sinica 2022年第12期41卷 73-79页

作者： Xin’an Wang Aijun Ma Zhifeng Liu zhibin sun Liguang Zhu Haowen Chang Yellow Sea Fisheries Research Institute Chinese Academy of Fishery SciencesQingdao 266071China Key Laboratory of Sustainable Development of Marine Fisheries Ministry of Agriculture and Rural AffairsQingdao 266071China Qingdao Key Laboratory for Marine Fish Breeding and Biotechnology Qingdao 266071China Laboratory for Marine Biology and Biotechnology Pilot National Laboratory for Marine Science and Technology(Qingdao)Qingdao 266071China

The aim of this study was to evaluate the genetic parameters of the growth performance of Takifugu rubripes.Heritabilities and genetic correlations were estimated for body weight(BW),body length(BL),total length(TL),chest measurement(CM)and trunk length(TKL)of T.rubripes from measurements of progeny at 6 months and 12 months.The results showed that the heritability was 0.37 for BW6,0.19 for BL6,0.35 for TL6,0.29 for CM6,0.26 for TKL6,0.36 for BW12,0.26 for BL12,0.25 for TL12,0.31 for CM12 and 0.15 for TKL12.The range of genetic correlations estimated at 6 months was 0.025–0.725 and−0.002–0.706 at 12 months.The results indicated that genetic improvement for faster growth rate or increased body weight in cultured T.rubripes was effective.Based on selection theory,the selection strategy for traits with medium heritability is flexible.Considering that these growth traits do not reach the high level of heritability,family selection should be expected.Given positive genetic correlations among BW,BL,TL,CM,and TKL at 6 months,the five traits could be improved simultaneously through selective breeding.As there was high genetic correlation only between BW12,BL12 and TL12,and negative correlations between TKL12 and BL12 as well as between CM12 and TL12,and only BW,BL and TL at 12 months could be improved simultaneously.

关键词： family genetic evaluation heritability genetic correlation

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3D limit analysis of rock slopes based on equivalent linear failure criterion with tension cut-off

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Journal of Rock Mechanics and Geotechnical Engineering 2023年第12期15卷 3118-3130页

作者： zhibin sun Bowen Wang Yongxin Li Jingshu Xu Jian Ji School of Automotive and Transportation Engineering Hefei University of TechnologyHefei230009China Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering Hohai UniversityNanjing210024China College of Architecture and Civil Engineering Beijing University of TechnologyBeijing100124China

Hoek-Brown (HB) failure criterion is widely used to predict the strength of intact or heavily jointed rock mass. For stability analysis of rock slopes governed by the HB failure criterion, the equivalent linearity to Mohr-Coulomb (MC) criterion is often adopted, leading to the well-known equivalent Mohr-Coulomb method (EMCM). Existing studies on EMCM analysis mainly consider the shear strength of rock material, while consideration of the tensile strength is rare. This contradicts the fact that the underlying tensile strength of rock mass has considerable impact on the rock slope stability in real world. In this regard, this paper proposes a limit analysis-based approach that can account for tension in the three-dimensional (3D) stability analysis of HB rock slope. This approach is established on the equivalent linearity of the HB criterion with consideration of tensile strength, known as the equivalent tension cut-off MC method (ETMCM), and using a horn-like 3D mechanism of limit analysis. The safety factor solutions given by the proposed approach are validated by previous studies and numerical results. Parametric studies are conducted to investigate the effect of rock tensile strength on slope stability. Results show that the consideration of tension leads to a more conservative safety factor and a sharper curvature of the failure surface, and these impacts tend to be more obvious with the increases in slope inclination and slope width. Finally, the stability of the HB rock slope under seepage conditions is studied using the proposed approach. The results indicate that the effect of tensile strength is highly remarkable in seepage circumstances.

关键词： Rock slope Hoek-Brown criterion Stability analysis Tensile strength Limit analysis

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Effect of Ni content on the weldability of middle-chromium hyperpure ferritic stainless steels 00Cr21Ti

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Baosteel Technical Research 2024年第2期18卷 19-26页

作者： ZHANG Xinbao WANG zhibin sun Mingshan YAN Zhifeng WANG Wenxian R&D Center for Stainless Steel Research InstituteChina Baowu Steel Group CorporationTaiyuan 030003China School of Materials Science and Engineering Taiyuan University of TechnologyTaiyuan 030024China

Excellent weldability substantially contributes to the intrinsic quality of steels,while appropriate chemical composition plays a primary role in the essential weldability of steels.The poor weldability of ferritic stainless steels could be improved through modification with minor alloy elements while minimally increasing the cost.Therefore,studying the effect of minor alloy elements on the weldability of steels is of considerable importance.In this study,several steels of middle-chromium hyperpure ferritic stainless 00Cr21Ti with different Ni content(0.3%,0.5%,0.8%,and 1.0%)were developed,and their weldabilities of butt joint samples welded using the metal inert gas welding process,including the influence of welded joints on the microstructure,tensile performance,corrosion resistance,and fatigue property,were investigated.Results show that the steels with w(Ni)≥0.8%exhibit excellent mechanical properties compared with those with low-Ni content steels,further,their impact toughness at normal atmospheric temperature meets the industrial application standard and the fatigue property is similar to that of 304 austenitic stainless steel.Moreover,results show that the corrosion resistance of all the samples is almost at the same level.The results acquired in this study are supposed to be useful for the optimization of the chemical composition of stainless steels aiming to improve weldability.

关键词： 00Cr21Ti ferritic stainless steel SUS443 welded joint mechanical properties fatigue property Ni content

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Comparison of the precision of glacier flow rates derived from offset-tracking using Sentinel-2 and Landsat-8/9 imagery

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Advances in Polar Science 2024年第2期35卷 238-251页

作者： YANG zhibin CHEN Zhuoqi LI Gang MAO Yanting FENG Xiaoman CHENG Xiao School of Geospatial Engineering and Science Sun Yat-sen Universityand Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai)Zhuhai 519082China Key Laboratory of Comprehensive Observation of Polar Environment(sun Yat-sen University) Ministry of EducationZhuhai 519082China

Offset-tracking is an essential method for deriving glacier flow rates using optical imagery.Sentinel-2(S2)and Landsat-8/9(L8/9)are popular optical satellites or constellations for polar studies,offering high spatial resolution with relatively short revisit time,wide swath width,and free accessibility.To evaluate and compare the precision of offset-tracking results yielded with these two kinds of data,in this study S2 and L8/9 imagery observed in Petermann Glacier in Greenland,Karakoram in High-Mountains Asia,and Amery Ice Shelf in the Antarctic are analyzed.Outliers and various systematic error sources in the offset-tracking results including orbital and strip errors were analyzed and eliminated at the pre-process stage.Precision at the off-glacier(bare rock)region was evaluated by presuming that no deformation occurred;then for both glacierized and the off-glacier regions,precision of velocity time series was evaluated based on error propagation theory.The least squares method based on connected components was used to solve flow rates time series based on multi-pair images offset-tracking.The results indicated that S2 achieved slightly higher precision than L8/9 in terms of both single-pair derived displacements and least square solved daily flow rates time series.Generally,the RMSE of daily velocity is 26%lower for S2 than L8/9.Moreover,S2 provided higher temporal resolution for monitoring glacier flow rates.

关键词： Sentinel-2 Landsat glacier flow rates offset-tracking precision

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A Novel Semi-Quantum Private Comparison Scheme Using Bell Entangle States

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Computers, Materials & Continua 2021年第3期66卷 2385-2395页

作者： Yuhua sun Lili Yan zhibin sun Shibin Zhang Jiazhong Lu School of Cybersecurity Chengdu University of Information TechnologyChengdu610225China Natural Resource Ecology Laboratory Colorado State UniversityFort CollinsCO 80523USA

Private comparison is the basis of many encryption technologies,and several related Quantum Private Comparison(QPC)protocols have been published in recent years.In these existing protocols,secret information is encoded by using conjugate coding or orthogonal states,and all users are quantum participants.In this paper,a novel semi-quantum private comparison scheme is proposed,which employs Bell entangled states as quantum resources.Two semi-quantum participants compare the equivalence of their private information with the help of a semi-honest third party(TP).Compared with the previous classical protocols,these two semi-quantum users can only make some particular action,such as to measure,prepare and reflect quantum qubits only in the classical basis fj0i;j1ig,and TP needs to perform Bell basis measurement on reflecting qubits to obtain the results of the comparison.Further,analysis results show that this scheme can avoid outside and participant attacks and its’qubit efficiency is better than the other two protocols mentioned in the paper.

关键词： Cryptography Bell entangled states a semi-honest TP security analysis semi-quantum private comparison

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Skill-assessments of statistical and Ensemble Kalman Filter data assimilative analyses using surface and deep observations in the Gulf of Mexico

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Frontiers of Earth Science 2013年第3期7卷 271-281页

作者： zhibin sun Lie-Yauw OEY Yi-Hui ZHOU Universities Space Research Association Columbia MD 21044 USA Princeton University AOS Sayre Hall Forrestal Campus Princeton NJ 08544 USA Department of Biostatistics University of North Carolina Chapel Hill NC 27599 USA

基于整体 Kalman 过滤器计划，在海洋建模的一个新数据吸收算法(Quasi-EnKF ) 在这份报纸被建议。这个算法吸收表面大小(海表面高度) 不仅，而且深(2000 m ) 从进地区性的海洋模型的墨西哥湾的温度观察。与普林斯顿海洋模型(POM ) 的使... 详细信息

基于整体 Kalman 过滤器计划，在海洋建模的一个新数据吸收算法(Quasi-EnKF ) 在这份报纸被建议。这个算法吸收表面大小(海表面高度) 不仅，而且深(2000 m ) 从进地区性的海洋模型的墨西哥湾的温度观察。与普林斯顿海洋模型(POM ) 的使用，为由吸收表面和深观察的约二年综合，这个新算法在不同决定与一个存在吸收算法(Mellor-Ezer 计划) 相比。结果证明由比较观察，新算法超过存在那个[出版摘要]

关键词：卡尔曼滤波数据同化墨西哥湾技能评估集合统计海洋模型海平面高度

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Quantum Secure Direct Communication Protocol with Mutual Authentication Based on Single Photons and Bell States

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Computers, Materials & Continua 2020年第6期63卷 1297-1307页

作者： Lili Yan Shibin Zhang Yan Chang zhibin sun Zhiwei Sheng School of Cybersecurity Chengdu University of Information TechnologyChengdu610000China Natural Resource Ecology Laboratory Colorado State UniversityFort CollinsCO 80523USA

Quantum secure direct communication(QSDC)can transmit secret messages directly from one user to another without first establishing a shared secret key,which is different from quantum key distribution.In this paper,we propose a novel quantum secure direct communication protocol based on signal photons and Bell states.Before the execution of the proposed protocol,two participants Alice and Bob exchange their corresponding identity IDA and IDB through quantum key distribution and keep them secret,respectively.Then the message sender,Alice,encodes each secret message bit into two single photons(|01>or|10>)or a Bell state(1|φ^(+)>=1/√2(|0>|-|1>1>)),and composes an ordered secret message sequence.To insure the security of communication,Alice also prepares the decoy photons and inserts them into secret message sequence on the basis of the values of IDA and IDB.By the secret identity IDA and IDB,both sides of the communication can check eavesdropping and identify each other.The proposed protocol not only completes secure direct communication,but also realizes the mutual authentication.The security analysis of the proposed protocol is presented in the paper.The analysis results show that this protocol is secure against some common attacks,and no secret message leaks even if the messages are broken.Compared with the two-way QSDC protocols,the presented protocol is a one-way quantum communication protocol which has the immunity to Trojan horse attack.Furthermore,our proposed protocol can be realized without quantum memory.

关键词： Quantum secure direct communication mutual authentication bell states single photons

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Relations between man and nature reflected by the evolution of the Neolithic production tools in the Three Gorges region of Yangtze River,China

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Chinese Science Bulletin 2008年第S1期53卷 95-106页

作者： GuangYao Zhu Cheng Zhu GuangYue Shi zhibin sun Nanjing Univ Sch Geog and Oceanog Sci Nanjing 210093 Peoples R China.

The relations between man and nature reflected by evolution of Neolithic production tools in the Three Gorges region of Yangtze River is discussed in this paper.Our results show that there is a good correlation between the percentage vibration of cutting tool types and the environmental evolution indicated by the natural profile nearby.It is possible for ancestors from the Three Gorges region to learn the advantage of mortise and tenon in the early Neolithic Age because they used the stones as vital tools for processing woods.The hunting method in the early Neolithic is throwing,which was inherited in the mid-Neolithic Age when hunting with arrow and bow was developed.Fishing tools are found at the same period.Numbers of net sinkers and spinning wheels unearthed from the strata of the Western Zhou Dynasty from Zhongba Site reveal the fact of fishing with net,while a mass of fishbone pits indi- cate the powerful productivity brought by new production tools.Quantity of stone spades and stone hoes proves that cultivation agriculture by hoe is extremely attached importance by the ancestors in the Three Gorges region.Moreover,the developed agriculture in Daxi Culture at Zhongbao Island benefits from the landform,climate,traffic location,etc.Otherwise,the reason that the farming tools declined in the late Neolithic Age is related to the extreme flood during the early Xia Dynasty and the fishing hunting preference of some ancient settlements.This research shows that ancestors of the Three Gorges region during the Neolithic Age attached importance to fish hunting and cultivation, fought against the natural environment by production tools,constantly created and improved them, then comprehensively utilized them to evolve the relations between man and nature.

关键词： the Three Gorges of Yangtze River the Neolithic Age evolution of production tools relations between man and nature

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负性情绪对听障学生幸福感的影响:体育锻炼与休闲活动满意度的双调节作用

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中国特殊教育 2024年第2期 40-47,73页

作者：孙霁令狐荣丹刘志彬班永飞孙沛安顺学院教育科学学院安顺561000 安顺学院特殊儿童发展与融合教育实验室安顺561000 贵阳市盲聋哑学校贵阳550000 清华大学心理学系北京100084

为探讨听力障碍学生负性情绪、体育锻炼、休闲活动满意度对幸福感的影响,采用抑郁焦虑压力量表、牛津幸福感问卷、体育活动等级量表和休闲满意度量表分别对392名听力障碍学生进行问卷调查。结果显示:(1)负性情绪对听力障碍学生幸福感有... 详细信息

为探讨听力障碍学生负性情绪、体育锻炼、休闲活动满意度对幸福感的影响,采用抑郁焦虑压力量表、牛津幸福感问卷、体育活动等级量表和休闲满意度量表分别对392名听力障碍学生进行问卷调查。结果显示:(1)负性情绪对听力障碍学生幸福感有显著的负向预测作用;(2)体育锻炼和休闲活动满意度在听力障碍学生负性情绪和幸福感之间起调节作用。体育锻炼越多,休闲活动满意度越高,听力障碍学生的幸福感越强,其负性情绪对幸福感的负向预测作用越大。研究结果有助于揭示听力障碍学生负性情绪与幸福感关系的内在机制,并提示体育锻炼和休闲活动满意度能够缓冲负性情绪对听力障碍学生心理健康的消极影响,提升他们的幸福感。

关键词：听力障碍学生负性情绪体育锻炼休闲活动满意度幸福感

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