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High-sensitive cardiac troponin T

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Journal of Geriatric Cardiology 2013年第1期10卷 102-109页

作者： Ru-Yi Xu Xiao-Fa Zhu ye Yang ping ye Department of Geriatric Cardiology Navy General Hospital No.6 Fucheng Road Beijing 100048 China Department of Geriatric Cardiology Chinese PLA General Hospital No.28 Fuxing Road Beijing 100853 China

Cardiac troponin is the preferred biomarker for the diagnosis of acute myocardial infarction (AMI). The recent development of a high-sensitive cardiac troponin T (hs-cTnT) assay permits detection of very lowlevels of cTnT. Using the hs-cTnT assay improves the overall diagnostic accuracy in patientswith suspected AMI, while a negative result also has a high negative predictive value. The gain in sensitivitymay be particularly important in patientswith a short duration from symptom onset to *** of cardiac troponin T with the hs-cTnT assay may provide strong prognostic information in patients with acute coronary syndromes, stable coronary artery disease, heart failure and even in the general population; however, increased sensitivity comes at a cost of decreased specificity. Serial testing, aswell as clinical context and co-existing diseases, are likely to become increasingly important for the interpretation of hs-cTnT assay results.

关键词： Acute myocardial infarction Risk stratification Troponin T

Preparation of the core-shell HMX@CS microparticles by biological excitation:Excellent hydrophobic-oleophilic properties and decreased impact sensitivity effectively

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Defence Technology（防务技术） 2022年第5期18卷 855-861页

作者： Yue-qi Li Heng Zhai ping ye Xing-quan Zhang Chang-ping Guo Sichuan Co-Innovation Center for New Energetic Materials Southwest University of Science and Technology(SWUST)Mianyang621010PR China Analysis and Testing Center of Southwest University of Science and Technology(SWUST) Mianyang621010PR China

Inspired by the phenomenon of superhydrophobic plants and animals in nature,1,3,5,7-tetranitro-1,3,5,7-tetrazocane(HMX)@copper stearate(CS)core-shell composites with similar properties was prepared.A rough shell layer on the surface of the HMX was observed by scanning electron microscopy(SEM),and a series of in-depth characterization confirmed the successful generation of CS and the coreshell structure of the *** scanning calorimeter(DSC)proves that the crystal transition temperature(204℃)and high temperature decomposition exothermal temperature(284℃)of HMX@CS is almost unchanged compared with pure HMX,which means HMX and CS have good ***,the H50 of the samples also increased continuously(16.6 cm→33.7 cm)when the CS shell content increased from 1%to 5%,indicating that the CS shell has a certain buffering performance,and CS will absorb some heat and melt under the stimulation of impact due to its low melting point,which improved impact sensitivity of HMX effectively ***,HMX@CS has excellent hydrophobic and oleophilic performance,shows excellent wettability with lipid binder,and samples with appropriate CS shell content can continue to combustion stably after covering *** waterproof and low sensitivity coating provides a new way for the development of multifunctional energetic materials.

关键词： HMX Core-shell Sensitivity Hydrophobic-oleophilic Mechanical properties

Nuclear Matter in a Chiral SU(3) Quark Mean-Field Model

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Communications in Theoretical Physics 2001年第7期36卷 71-78页

作者： WANG ping ZHANG Zong-ye YU You-Wen Institute of High Energy Physics Academia Sinica P.O. Box 918(4) Beijing 100039 China Institute of High Energy Physics Academia Sinica P.O. Box 918(4) Beijing 100039 China Institute of High Energy Physics Academia Sinica P.O. Box 918(4) Beijing 100039 China

A quark meson coupling model based on SU(3)L × SU(3)R symmetry and scale invariance is *** quarks and mesons get masses through symmetry broken. We apply this SU(3) chiral constituent quark model to investigating the nuclear matter at finite temperature and density. The effective baryon masses, compression modulus and hyperon potentials are all reasonable. The critical temperature ofliquid-gas phase transition is also calculated in this model.

关键词： chiral symmetry, constituent quark, nuclear matter, hyperon potentials

Effect of parasite egg size and quantity contrast of parasite-host eggs on recognition and rejection mode of Green-backed Tits

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Avian Research 2024年第4期15卷 466-472页

作者： Xu Zhao ping ye Huaxiao Zhou Canchao Yang Ministry of Education Key Laboratory for Ecology of Tropical Islands College of Life SciencesHainan Normal UniversityHaikou571158China Key Laboratory of Southwest China Wildlife Resources Conservation(Ministry of Education) China West Normal UniversityNanchong637009China

In the co-evolutionary system of avian brood parasitism,egg recognition and rejection are common and generally act as effective anti-parasitic adaptations by ***,most studies have examined the role of parasite egg colors and markings in detection cues in hosts;however,studies focusing on the effects of egg size and quantity are relatively scarce and have mostly concentrated on the hosts of parasitic ***,we studied the egg recognition behaviors of a potential host of the Common Cuckoo(Cuculus canorus)—the Green-backed Tit(Parus monticolus),to determine:(1)whether the host uses the sizes of parasite eggs and/or the quantity contrast between parasite and host eggs as cues for recognition,(2)whether the host employs the template or discordant recognition mechanism for egg recognition,and(3)whether the size and quantity of parasite eggs affect the egg rejection modes of the *** results indicate that Green-backed Tits did not use parasite egg size as a primary cue for egg *** hypothesized that both visual and tactile detection might be involved in egg recognition by Green-backed Tits and suggest further studies after controlling for nest light *** in egg quantity between parasites and hosts were not used as cues for egg recognition because the hosts employed the template mechanism rather than discordance to recognize parasite ***,both the relative sizes and quantity of parasite and host eggs significantly affected the rejection modes of parasite eggs,and larger or more parasite eggs triggered higher probabilities of nest desertion in hosts.

关键词： Avian brood parasitism Coevolution Discordancy mechanism Recognition cue Template mechanism

The Edge Sensor of Segmented Mirror Based on Fringes of Equal Thickness

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Research in Astronomy and Astrophysics 2023年第6期23卷 238-251页

作者： Xi Zhang Heng Zuo Yong Zhang ye-ping Li Nanjing Institute of Astronomical Optics and Technology National Astronomical ObservatoriesChinese Academy of SciencesNanjing 210042China Key Laboratory of Astronomical Optics and Technology Nanjing Institute of Astronomical Optics and TechnologyChinese Academy of SciencesNanjing 210042China University of Chinese Academy of Sciences Beijing 100049China National Astronomical Observatories Chinese Academy of SciencesBeijing 100101China Key Laboratory of Optical Astronomy National Astronomical ObservatoriesChinese Academy of SciencesBeijing 100101China

Co-phase and co-focus detection is one of the key technologies for large-aperture segmented mirror *** this paper,a new edge sensor based on fringes of equal thickness is developed,which can detect each segment's relative piston,tilt,and tip errors from the *** on the co-focus demand for many ground-based seeing limited segmented mirror telescopes,an edge sensor prototype based on such a principle is built and applied in the indoor segmented mirror experiment system in the *** to the co-focus requirement of the Large Sky Area Multi-Object Fiber Spectroscopic Telescope,many simulations and experiments are carried out for cofocus error detection of the segmented mirror *** results show that the co-focus accuracy is better than 002 rms,which can meet the co-focus requirements of most large or extremely large segmented mirror astronomical telescopes.

关键词： instrumentation:interferometers astronomical instrumentation methods and techniques techniques:interferometric

Hydrothermal synthesis and crystal structure of copper （Ⅱ） coordination polymer composed of helix-like chains： [Cu（NIeH）（bpy）]

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Chinese Science Bulletin 2006年第14期51卷 1682-1686页

作者： ye Junwei ZHANG ping ye Kaiqi ye Ling YANG Guangdi WANG Yue Key Laboratory for Supramolecular Structure and Materials Jilin University Changchun 130012 China

Hydrothermal reactions of Cu (II) ace-tate, 2,2′-bipyridyl (bpy) with 5-nitroisophthalic acid (H2NIPH) resulted in a new coordination polymer [Cu(NIPH)(bpy)] 1. Single crystal X-ray diffraction experiment indicates that 1 possesses a single helix- like chains, of which Cu atoms are coordinated by NIPH ligands and bpy ligands. Compound 1 crystal-lizes in the space group P2(1)/c, a = 0.955(19) nm, b = 1.259(3) nm, c = 1.3737(3) nm, β = 95.13(3)°, V = 1.6455(6) nm3 and Z = 4. The TGA analysis shows that 1 has no remarkable weight loss up to 284℃, as a result of its high thermal stability. Magnetic meas-urements indicate an antiferromagnetic behavior of compound 1.

关键词：超分子配位聚合物螺旋状链铜水热合成晶体结构

Analysis of differential expression of tight junction proteins in cultured oral epithelial cells altered by Porphyromonas gingivalis,Porphyromonas gingivalis lipopolysaccharide,and extracellular adenosine triphosphate

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International Journal of Oral Science 2017年第4期9卷 238-244页

作者： wei guo peng wang zhong-hao liu ping ye department of endodontics yantai stomatological hospitalbinzhou medical universityYantaiChina department of pediatrics yantai stomatological hospitalbinzhou medical universityYantaiChina department of implant yantai stomatological hospitalbinzhou medical universityYantaiChina institute of dental research centre for oral healthwestmead hospitalWestmeadAustralia faculty of dentistry the university of sydneySydneyAustralia

Tight junctions （TJs） are the most apical intercellular junctions of epithelial cells formed by occludin, claudins, junctional adhesion molecules （JAMs）, and zonula occludens （ZO）. Tight junction proteins can sense the presence of bacteria and regulate the transcription of target genes that encode effectors and regulators of the immune response. The aim of this study was to determine the impact of TJ proteins in response to Porphyromonas gingivalis （P. gingivalis）, P. gingivalis lipopolysaccharide （P. gingivalis LPS）, and extracellular adenosine triphosphate （ATP） in the oral epithelial cell culture model. Quantified real time- polymerase chain reaction （RT-PCR）, immunoblots, and immunostaining were performed to assess the gene and protein expression in TJs. It was found that P. gingivalis infection led to transient upregulation of the genes encoding occludin, claudin- 1, and claudin-4 but not JAM-A, claudin-15, or ZO-1, while P. gingivalis LPS increased claudin-1, claudin-15, and ZO-1 and decreased occludin, JAM-A, and claudin-4. Tight junction proteins showed significant upregulation in the above two groups when cells were pretreated with ATP for 3 h. The findings indicated that P. gingivalis induced the host defence responses at an early stage. P. gingivalis LPS exerted a more powerful stimulatory effect on the disruption of the epithelial barrier than P. gingivalis. ATP stimulation enhanced the reaction of TJ proteins to P. gingivalis invasion and LPS destruction of the epithelium.

关键词： junctional epithelium periodontitis Porphyromonas gingivalis tight junctions

Integrating outlier filtering in large margin training

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Journal of Zhejiang University-Science C(Computers and Electronics) 2011年第5期12卷 362-370页

作者： Xi-chuan ZHOU Hai-bin SHEN Jie-ping ye College of Communication Engineering Chongqing University Chongqing 400044 China School of Electrical Engineering Zhejiang University Hangzhou 310027 China Dcpartment of Computer Science and Engineering Arizona State University Tempe 85281 USA

Large margin classifiers such as support vector machines (SVM) have been applied successfully in various classification ***,their performance may be significantly degraded in the presence of *** this paper,we propose a robust SVM formulation which is shown to be less sensitive to *** key idea is to employ an adaptively weighted hinge loss that explicitly incorporates outlier filtering in the SVM training,thus performing outlier filtering and classification *** resulting robust SVM formulation is *** first relax it into a semi-definite programming which admits a global *** improve the efficiency,an iterative approach is *** have performed experiments using both synthetic and real-world *** show that the performance of the standard SVM degrades rapidly when more outliers are included,while the proposed robust SVM training is more stable in the presence of outliers.

关键词： Support vector machines Outlier filter Semi-definite programming Multi-stage relaxation

Preparation of high emissivity NiCr_2O_4 powders with a spinel structure by spray drying

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International Journal of Minerals,Metallurgy and Materials 2012年第2期19卷 173-178页

作者： Xu-dong Cheng Jie Min Zhen-qi Zhu Wei-ping ye State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China School of Materials Science and Technology Wuhan University of Technology Wuhan 430070 China

Spray-drying was used to produce the high emissivity NiCr2O4 powders with a spinel structure. Preliminary investigations focused on fabricating the high emissivity powders for infrared radiation coatings and finding the relationship between microstructure and emissivity. The NiCr2O4 powders were characterized for composition, microstructure, and infrared emissivity by X-ray diffraction （XRD）, scanning electron microscopy （SEM）, infrared radiant instrument, and Fourier transform infrared spectra （FT-IR）. Thermogravimetry and differential thermal analysis show that the appropriate baking temperature for NiCr2O4 powder preparation is about 1200？C. The emissivity measurement and FT-IR spectra show that, because of the special spinel structure, the NiCr2O4 powders have a high emissivity about 0.91. Spray-drying is a suitable method to produce the high emissivity ceramic powders.

关键词： emissivity infrared radiation spray drying powders ceramic materials nickel compounds chromium compounds