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HDPairFinder:A data processing platform for hydrogen/deuterium isotopic labeling-based nontargeted analysis of trace-level amino-containing chemicals in environmental water

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journal of Environmental Sciences 2024年第2期136卷 583-593页

作者： Tingting zhao Kristin Carroll Caley B.Craven Nicholas j.P.Wawryk Shipei Xing jian Guo Xing-Fang Li Tao Huan Department of Chemistry Faculty of ScienceUniversity of British ColumbiaVancouver Campus2036 Main MallVancouverBritish ColumbiaV6T 1Z1Canada Division of Analytical and Environmental Toxicology Department of Laboratory Medicine and PathologyFaculty of Medicine and DentistryUniversity of AlbertaEdmontonAlberta T6G 2G3Canada

The combination of hydrogen/deuterium(H/D)formaldehyde-based isotopic methyl labeling with solid-phase extraction and high-performance liquid chromatography–high resolution mass spectrometry(HPLC-HRMS)is a powerful analytical solution for nontargeted analysis of trace-level amino-containing chemicals in water *** the huge amount of chemical information generated in HPLC-HRMS analysis,identifying all possible H/Dlabeled amino chemicals presents a significant challenge in data *** address this,we designed a streamlined data processing pipeline that can automatically extract H/D-labeled amino chemicals from the raw HPLC-HRMS data with high accuracy and ***,we developed a cross-correlation algorithm to correct the retention time shift resulting from deuterium isotopic effects,which enables reliable pairing of H-and D-labeled ***,we implemented several bioinformatic solutions to remove false chemical features generated by in-source fragmentation,salt adduction,and natural13C ***,we used a data mining strategy to construct the AMINES library that consists of over 38,000 structure-disjointed primary and secondary amines to facilitate putative compound ***,we integrated these modules into a freely available R program,*** rationale of each module was justified and its performance tested using experimental H/D-labeled chemical standards and authentic water *** further demonstrated the application of HDPairFinder to effectively extract N-containing contaminants,thus enabling the monitoring of changes of primary and secondary N-compounds in authentic water *** is a reliable bioinformatic tool for rapid processing of H/D isotopic methyl labeling-based nontargeted analysis of water samples,and will facilitate a better understanding of N-containing chemical compounds in water.

关键词： Isotope labeling Nontargeted analysis Reactive N-compounds HPLC-HRMS Source water

Study on thermal decomposition kinetics of azobenzene-4,4′-dicarboxylic acid by using compensation parameter method and nonlinear fitting evaluation

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Chinese journal of Chemical Engineering 2024年第6期70卷 269-279页

作者： Shuyi Shen Song Guo Sining Chen jinhua zhao Nanjing University of Science&Technology Nanjing 210094China China Academy of Safety Science and Technology Beijing 100012China

Recently,azobenzene-4,4'-dicarboxylic acid(ADCA)has been produced gradually for use as an organic synthesis or pharmaceutical intermediate due to its eminent *** large quantities put into application in the future,the thermal stability of this substance during storage,transportation,and use will become quite ***,in this work,the thermal decomposition behavior,thermal decomposition kinetics,and thermal hazard of ADCA were *** were conducted by using a SENSYS evo DSC device.A combination of differential iso-conversion method,compensation parameter method,and nonlinear fitting evaluation were also used to analyze thermal kinetics and mechanism of ADCA *** results show that when conversion rate α increases,the activation energies of ADCA's first and main decomposition peaks *** amount of heat released during decomposition varies between 182.46 and 231.16 j·g^(-1).The proposed kinetic equation is based on the Avrami-Erofeev model,which is consistent with the decomposition *** the Frank-Kamenetskii model,a calculated self-accelerating decomposition temperature of 287.0℃is obtained.

关键词： Azobenzene-4,4′-dicarboxylic acid Thermal decomposition behavior Kinetic mechanism Thermal hazard evaluation Compensation parameter effect

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论青藏运动主幕

中国科学：地球科学 2015年第11期45卷 1597-1608页

作者：李吉均周尚哲赵志军张军兰州大学资源环境学院西部环境教育部重点实验室兰州730000 南京师范大学江苏省地理信息资源开发与利用协同创新中心南京210023 华南师范大学地理科学学院广州510631

依据近30年来取得的地质、地貌、地层、古生物等方面的资料,对＂青藏运动主幕＂进行讨论.青藏高原目前的主体是中新世-上新世漫长的侵蚀作用形成的、被抬升的主夷平面,这个主夷平面在高原内部切过以中生界和古近系为主的变形岩系,向高... 详细信息

依据近30年来取得的地质、地貌、地层、古生物等方面的资料,对＂青藏运动主幕＂进行讨论.青藏高原目前的主体是中新世-上新世漫长的侵蚀作用形成的、被抬升的主夷平面,这个主夷平面在高原内部切过以中生界和古近系为主的变形岩系,向高原周边展布.3.6 Ma前后,高原内外发生强烈的构造运动开始隆升,形成大幅度的地形反差,启动了一个旺盛的磨拉石堆积时期,主夷平面开始解体.至今高原内部仍保持着完整的准平原状态,山顶面和主夷平面之间的物质传输仍为主要的陆面过程.在高原边缘地带,河流强劲侵蚀,但目前尚未切入到腹地,各大江河最老阶地砾石层的年龄集中于1.7~1.9 Ma.按照源于高原的各条江河现在的侵蚀能力估算,假使高原不再抬升,大约需要8.6 Ma高原就将被再次夷平.但考虑地貌循环后期阶段侵蚀会大幅减缓,8.6 Ma则足以使主夷平面消失殆尽,而进入老年、至少壮年期.表明高原面不可能于14 Ma甚至35 Ma前已达到目前的高度并维持至今.古生物资料表明,上新世早期柴达木盆地还生活着大象、长颈鹿、犀牛动物群和红土风化壳、植物群落一致显示湿热低地环境.亚洲中部变干、黄土堆积也与青藏高原上新世晚期以来隆起密切相关.

关键词：青藏运动主夷平面地貌循环磨拉石沉积生物生态

DISCUSSION ON DEFECTS DISTRIBUTION NEAR THE STEEL SURFACE IRRADIATED BY INTENSE PULSED ION BEAM

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Acta Metallurgica Sinica(English Letters) 2002年第1期15卷 113-118页

作者： X.Y. Le S. Yan W.j. zhao B.X. Han W. Xiang Institute of Heavy Ion Physics Peking University Beijing 100871 China

The surface defect distribution in stainless steel irradiated with intensepulsed ion beam (IPIB) of current density above 60A/cm^2 and acceleration voltage 300-500ke V wasdiscussed and analyzed. The defects near the surface of stainless steel were generated in two ways:(1) generated by the bombardment of energetic ions and (2) induced by the high level stress near thesurface. Thus the temperature and stress distributions near the steel surface were calculated bymeans of our STEIPIB code, which treated with the thermal-dynamical process in the target irradiatedby the IPIB. Based on these distributions, the generations and movements of these defects werediscussed and compared with the experiment results.

关键词： IPIB defect coupled fluid elastoplastic equation

Rice gene OsUGT75A regulates seedling emergence under deep-sowing conditions

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The Crop journal 2024年第1期12卷 133-141页

作者： jia zhao Siyu Liu Xiaoqian zhao Zhibo Huang Shan Sun Zixuan Zeng Yongqi He Zhoufei Wang The Laboratory of Seed Science and Technology Guangdong Key Laboratory of Plant Molecular BreedingNational Engineering Research Center of Plant Space BreedingSouth China Agricultural UniversityGuangzhou 510642GuangdongChina

Poor seedling emergence is a challenge for direct seeding of rice under deep-sowing field *** we reveal that UDP-glucosyltransferase OsUGT75A promotes rice seedling emergence under deepsowing conditions by increasing shoot *** of OsUGT75A was higher in the middle regions of the shoot and in shoots under deep-sowing *** of free abscisic acid(ABA)and jasmonates(jA)were higher in shoots of OsUGT75A mutants than in those of wild-type plants,and OsUGT75A mutants were more sensitive to ABA and jA *** shoot length was attributed to higher ABA INSENSITIVE 3(OsABI3)expression and lower jASMONATE-ZIM domain protein(OsjAZ)expression in *** extension by OsUGT75A is achieved mainly by promotion of cell *** elite haplotype of OsUGT75A associated with increased shoot length was identified among indica rice ***75A acts to increase seedling emergence under deep-sowing conditions.

关键词： Abscisic acid Deep-sowing jasmonic acid Rice Shoot length

All-optical driven soft crawler with complexmotion capabilities

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International journal of Smart and Nano Materials 2024年第2期15卷 348-364页

作者： Chenchu Zhang jin Wang Linhan zhao Renfei Chen Qiangqiang zhao jie zhao Fating Liu Yucheng Bian Heng Zhang Yisen Wang Chaowei Wang Ying Hu Anhui Province Key Lab of Aerospace Structural Parts Forming Technology and Equipment Institute of Industry and Equipment TechnologyHefei University of TechnologyHefeiChina CAS Key Laboratory of Mechanical Behavior and Design of Materials Department of Precision Machinery and Precision InstrumentationUniversity of Science and Technology of ChinaHefeiChina GBA Branch of Aerospace Information Research Institute Chinese Academy of SciencesGuangzhouChina

The emergence of millimeter-scale soft actuators has signifi-cantly expanded the potential applications in areas such as search and rescue,drug delivery,and human assistance,due to their high *** these advancements,achieving precise control over the intricate movements of soft crawlers poses a significant *** this study,we have developed an all-optical approach that enables manipulation of propul-sive forces by simultaneously modifying the magnitude and direction of friction forces,thereby enabling complex motions of soft ***,the approach is not constrained by specific actuator shapes,and theoretically,any elongated photothermal actuator can be *** actuator was designed with an isosceles trapezoid shape,featuring a top width of 2mm,a bottom width of 4 mm,and a length of 8 *** our,manipulation approach,we showcase a proof-of-concept for complex soft robotic motions,including crawling(achieving speeds of up to 2.25 body lengths per minute),turning,avoiding obstacles,handling and trans-ferring objects approximately twice its own weight,and navi-gating narrow spaces along programmed *** results showcasethis all-optical manipulationapproach as a promising,yet unexplored tool for the precision and wireless control for the development of advanced soft actuators.

关键词： Light driven soft actuator all-optical manipulation laser manipulation

Roles of arabinogalactan proteins in cotyledon formation and cell wall deposition during embryo development of Arabidopsis

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Roles of arabinogalactan proteins in cotyledon formation and...

Effect of catheter radiofrequency ablation on C-reactive protein, brain natriuretic peptide and echocardiograph in patients with persistent and permanent atrial fibrillation

细胞—生命的基础——中国细胞生物学学会2013年全国学术大会·武汉

作者： Zhong j Ren Yj Yu M Ma TF Zhang XL zhao j College of Life Sciences Wuhan University

Arabinogalactan proteins(AGPs) are a class of highly glycosylated,widely distributed proteins in higher *** the previous study,we found that the green fluorescence from jIM13-labeled AGPs was mainly distributed in embryo proper and the basal part of suspensor but gradually disappeared after the torpedo-stage embryos in ***(P-D-Glc)3 Yariv phenylglycoside(βGlcY),a

关键词： Arabidopsis thaliana Arabinogalactan proteins Cotyledon Cellulose Pectin Shoot apical meristem

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Chinese Medical journal 2014年第4期127卷 623-626页

作者： Huang Q QiuCG Yuan YQ zhao Y j Mao YL Wang RM Wang Q Department of Cardiology First Affiliated Hospital of Zhengzhou University Zhengzhou Henan 450052 China Department of Cardiology Zhengzhou Cardiovascular Hospital Zhengzhou Henan 450016 China

Background Radiofrequency catheter ablation （RFCA） for atrial fibrillation （AF） has developed rapidly,and is a commonly performed ablation in many major hospitals throughout the world,due to its satisfactory *** aim of this study was to detect the effect of RFCA on C-reactive protein （CRP）,brain natriuretic peptide （BNP）,and echocardiograph in patients with persistent and permanent *** A total of 120 patients （71 males,mean age （50.8＆#177;12.0） years） with persistent and permanent AF undergoing RFCA under guidance of the Carto merge technique were *** atrial diameter （LAD）,right atrial diameter （RAD）,left ventricular ejection fraction （LVEF）,CRP,and BNP were observed 3,6 and 12 months after RFCA and compared with results before *** recurrence of atrial arrhythmias was observed 3 and 12 months after the *** Compared with that before RFCA,LAD and RAD decreased and LVEF increased significantly after ***,the levels of CRP and BNP were reduced significantly at 3,6,and 12 months after RFCA （P〈0.05）.In the non-recurrent patients,LVEF was increased significantly compared with the recurrent patients at 3,6,and 12 months after RFCA （P〈0.05）.CRP and BNP levels were decreased significantly in the non-recurrent patients compared with the recurrent patients at 3,6,and 12 months after RFCA （P〈0.05）.After one or two applications of RFCA,during a follow-up of 12 months,12 patients （10.0%） had AF,10 patients （8.3%） had atrial flutter,and 5 patients had atrial tachycardia （4.2%）.Conclusions Conversion of AF to sinus rhythm by RFCA,has been shown to reduce LA size and improve *** can also significantly decrease the levels of CRP and BNP in patients with persistent and permanent AF and reduce the risk of inflammation and developing heart failure.

关键词： atrial fibrillation catheter ablation C-reactive protein brain natriuretic peptide morphology

DESIGN AND PROPERTIES OF A FUNCTIONALLY GRADIENT CERAMIC TOOL MATERIAL

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Acta Metallurgica Sinica(English Letters) 1999年第5期12卷 1054-1058页

作者： j. zhao,X. Ai, j.H. Zhang, j.X. Deng and C.Z. Huang Department of Mechanical Engineering, Shandong University of Technology, jinan 250061,China

Based on the analyses of the severity of cutting process as well as the failure mechanisms of ceramic tools, a model for designing functionally gradient ceramic tool materials with symmetrical distribution is presented, by which a Al 2O 3/(W,Ti)C ceramic tool material FG 2 was developed. Multi objective optimization method was employed in designing the compositional distribution of this ceramic tool material. The results of both continuous and intermittent cutting tests are indicative of the much better cutting behavior of the functionally gradient ceramic tool FG 2 than that of the common ceramic tool SG 4.

关键词： functionally gradient materials materials design compositional distribution ceramic tool