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超高效液相色谱-串联质谱测定污水中依托咪酯

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中国给水排水 2024年第4期40卷 132-136页

作者：陈顺琴高焕朱发泽陈月猛刘杉丁文波刘玉波贵州医科大学法医学院贵州贵阳550004 贵阳市公安局毒品检验中心贵州贵阳550018 贵州万孚先义检测技术有限公司贵州贵阳550009

基于超高效液相色谱-串联质谱(UPLC-MS/MS)技术首次建立了污水中依托咪酯的分析检测方法,样品经在线固相萃取(On-line SPE)系统,以HLB Direct Connect HP固相萃取小柱(2.1 mm×30 mm,20μm)对目标化合物进行萃取后,采用乙腈-2 mmol/L甲... 详细信息

基于超高效液相色谱-串联质谱(UPLC-MS/MS)技术首次建立了污水中依托咪酯的分析检测方法,样品经在线固相萃取(On-line SPE)系统,以HLB Direct Connect HP固相萃取小柱(2.1 mm×30 mm,20μm)对目标化合物进行萃取后,采用乙腈-2 mmol/L甲酸铵和0.1%甲酸水溶液为流动相进行梯度洗脱,再将目标物反向加载至Kinetex Biphenyl色谱柱(3.0 mm×100 mm,2.6μm),采用电喷雾正离子(ESI+)、多反应监测(MRM)模式分析检测。结果显示,依托咪酯在1~300 ng/L范围内线性关系良好,R2为0.999 7,方法检出限(LOD)为0.3 ng/L,定量限(LOQ)为1.0 ng/L。应用该方法对遵义地区17座污水处理厂进水口处依托咪酯的浓度进行检测,进一步验证了该方法的可靠性。污水样品中依托咪酯的检出率较低,其原因可能是依托咪酯经体内代谢后主要以依托咪酯酸的形式存在,检测结果与实际情况相符。依托咪酯于2023年10月1日起被纳入第二类精神药品列管目录,该方法的建立对依托咪酯的分析提供了技术参考。

关键词：超高效液相色谱-串联质谱(UPLC-MS/MS) 依托咪酯污水

Cooling of Hyperonic Neutron Stars with Antikaons

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Chinese Physics Letters 2011年第7期28卷 85-88页

作者： ding wen-bo YU Zi LIU Yu-Hui School of Mathematics and Physics Bohai UniversityJinzhou 121000 College of Science Nanjing Forestry UniversityNanjing 210037

We discuss the impact of hyperons on the neutrino emitting and the gross cooling features of neutron stars with K−and K0 *** results show that hyperons change the density ranges of the direct Urca process with nucleons and the Urca processes of K−and K0 condensations,as well as the values of neutrino ***,interactions between hyperons and antikaons make the neutrino luminosity *** is found that various hyperons play different roles in neutron *** massive stars,Σhyperons make the cooling ***,Λcan hardly change the cooling history but it reduces the mass of neutron stars.

关键词： condensation slower stars

人际信任和社交焦虑在欺凌受害与孤独感之间的多重中介作用

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中国健康教育 2024年第7期40卷 662-665,670页

作者：权方英丁文博归梦琼赵颖慧李宏翰广西师范大学教育学部心理学系广西桂林541004 广西高校认知神经科学与应用心理重点实验室广西桂林541004 广西高校人文社会科学重点研究基地广西民族教育发展研究中心广西桂林541004 桂林市田家炳中学广西桂林541004

目的考察人际信任和社交焦虑在欺凌受害与孤独感之间的中介作用。方法采用特拉华欺凌受害量表、加州大学洛杉矶分校孤独量表、人际信任量表、儿童社交焦虑量表对460名中学生进行调查。结果欺凌受害与孤独感显著相关(β=0.23,P<0.001)。... 详细信息

目的考察人际信任和社交焦虑在欺凌受害与孤独感之间的中介作用。方法采用特拉华欺凌受害量表、加州大学洛杉矶分校孤独量表、人际信任量表、儿童社交焦虑量表对460名中学生进行调查。结果欺凌受害与孤独感显著相关(β=0.23,P<0.001)。人际信任、社交焦虑、孤独感两两显著相关(β=-0.27,-0.39,0.56;P均<0.001)。潜变量结构方程模型拟合指标为:χ^(2)/df=3.17,RMSEA=0.07,SRMR=0.05,CFI=0.95,TLI=0.93。中介效应检验结果显示欺凌受害与孤独感之间的中介路径显著:欺凌受害→人际信任→社交焦虑→孤独感(中介效应值0.03),95%的置信区间均不包含0。结论中学生欺凌受害不仅会直接预测孤独感,还会通过人际信任和社交焦虑间接预测孤独感。这些结果为预防和干预中学生的孤独感提供了实践启示。

关键词：欺凌受害孤独感人际信任社交焦虑中介作用

PSR J1614-2230 May Include Hyperons

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Chinese Physics Letters 2011年第8期28卷 352-355页

作者： YU Zi ding wen-bo BAO Tmurbagan LIU Ning-Ning The College of Science Nanjing Forestry UniversityNanjing 210037 Department of Physics Bohai UniversityJinzhou 121000 College of Physics and Electronic Engineering Nanyang Normal UniversityNanyang 473061 Department of Basic Course Nanjing Institute of TechnologyNanjing 211167

In the framework of the relativistic mean field theory,it is found that recently discovered PSR J1614-2230 with mass of 1.97±0.04Mʘmay include hyperons when the weakly interacting light boson(WILB)is *** describe PSR J1614−2230 with the equation of state(EOS)including hyperons,the characteristic scale of the WILB(g^(2)/μ^(2))should lie in the range of 13–46(24–46)GeV^(−2) with the weak(strong)hyperon-hyperon(YY)*** measurements of inertial momentum and the total neutrino luminosity of the neutron star could be used to further constrain the characteristic scale of the *** more stringent constraint on the WILB is given,the mass measurement of the neutron star could not exclude any soft EOS.

关键词： interaction weakly momentum

Two-Staged Method for Ice Channel Identification Based on Image Segmentation and Corner Point Regression

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China Ocean Engineering 2024年第2期38卷 313-325页

作者： DONG wen-bo ZHOU Li ding Shi-feng WANG Ai-ming CAI Jin-yan School of Naval Architecture and Ocean Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China School of Naval Architecture Ocean and Civil EngineeringShanghai Jiao Tong UniversityShanghai 200240China

Identification of the ice channel is the basic technology for developing intelligent ships in ice-covered waters,which is important to ensure the safety and economy of *** the Arctic,merchant ships with low ice class often navigate in channels opened up by *** in the ice channel often depends on good maneuverability skills and abundant experience from the captain to a large *** ship may get stuck if steered into ice fields off the *** this circumstance,it is very important to study how to identify the boundary lines of ice channels with a reliable *** this paper,a two-staged ice channel identification method is developed based on image segmentation and corner point *** first stage employs the image segmentation method to extract channel *** the second stage,an intelligent corner regression network is proposed to extract the channel boundary lines from the channel region.A non-intelligent angle-based filtering and clustering method is proposed and compared with corner point regression *** training and evaluation of the segmentation method and corner regression network are carried out on the synthetic and real ice channel *** evaluation results show that the accuracy of the method using the corner point regression network in the second stage is achieved as high as 73.33%on the synthetic ice channel dataset and 70.66%on the real ice channel dataset,and the processing speed can reach up to 14.58frames per second.

关键词： ice channel ship navigation identification image segmentation corner point regression

Catalysis by subsurface metal atoms in Al(001) through electron transfer

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National Science Review 2024年第4期11卷 12-13页

作者： bo Sun ding Ma Beijing National Laboratory for Molecular Science New Cornerstone Science Laboratory College of Chemistry and Molecular Engineering Peking University

Heterogeneous catalysis plays a crucial role in the chemical industry, which has evolved from the investigation of chemisorption to an electronic structure[1]. Diverse strategies, such as alloying,doping, and confining, have been applied to enhance the catalytic properties of active sites through electronic modulation. The electron transfer between active sites and substrates profoundly influences catalytic activity [2].

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Catalytic recycling of polyesters via a binuclear catalyst

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Science China Chemistry 2024年第2期67卷 426-427页

作者： bo Sun ding Ma Beijing National Laboratory for Molecular Science New Cornerstone Science LaboratoryCollege of Chemistry and Molecular EngineeringPeking UniversityBeijing100871China

Plastics play a crucial role in modern society life. While the increasing use of plastics and rapid accumulation of plastic waste in nature environment have caused severe environmental crisis and the waste of carbon resources. Catalytic upcycling is a promising approach to transform plastic waste into high value-added chemicals to achieve a sustainable circular economy.

关键词： Catalytic polyester catalyst

Controlling and decision-making based on All Set Theory

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通讯和计算机（中英文版） 2007年第8期4卷 6-10页

作者： ding wen-bo HE Zhong-xiong Beijing Jiaotong University Beijing 100044 China

As a newly discipline and methodology in the field of Artificial Intelligent, All Set Theory can be applied to describe macroscopic complex large systems and establish models in uncertain systems. The application of All Set Theory in controlling and decision-making for systems was discussed in the paper, furthermore, the Decision-making and Controlling System based on All Set Theory (AS-DCS) is put forward. At last, the model of AS-DCS and its structure as well as its program flow chart are presented.

关键词：统一集理论复杂系统决策控制人工智能

Black hole evaporation and its remnants with the generalized uncertainty principle including a linear term

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Communications in Theoretical Physics 2024年第2期76卷 125-136页

作者： bo Yu Zheng-wen Long College of Physics Guizhou UniversityGuiyang550025China

In recent years,researchers have investigated the evaporation of Schwarzschild black holes using various forms of the generalized uncertainty principle(GUP),metric quantum correction,and noncommutative geometry,***,there are differences between the GUP correction and the other two methods in terms of describing the later stages of black hole ***,some studies argue that the GUP with a negative parameter cannot effectively correct black hole evaporation,while others contend that the positivity or negativity of the GUP parameters should not affect the correction *** the above into consideration,we reconsider black hole evaporation with the generalized uncertainty principle including a linear term(LGUP),and examine the case of negative *** results indicate that the evaporation behavior of both Schwarzschild black holes and Reissner–Nordstr?m black holes,under LGUP correction,is consistent with the results of metric quantum correction and non-commutative ***,the negative parameter LGUP can also effectively correct for black hole evaporation.

关键词： black hole evaporation generalized uncertainty principle negative parameter