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Petrogenesis and tectonic significance of the early Paleozoic Delenuoer ophiolite in the Central Qilian Shan, northeastern Tibetan Plateau

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Geoscience Frontiers 2020年第6期11卷 2017-2029页

作者： zhen Ma Jinrong Wang Liangliang zhang Yixin Liu Yunyun Gao xiang zhang Sheng Yu Cheng zhang Key Laboratory of Mineral Resources in Western China School of Earth SciencesLanzhou UniversityLanzhou730000China State Key Laboratory of Geological Processes and Mineral Resources School of Earth Sciences and ResourcesChina University of Geosciences(Beijing)Beijing100083China Changqing Branch Research Institute of Bureau of Geophysical ProspectingChina National Petroleum CorporationXi’an710021China Geological Survey of Gansu Province Lanzhou730000China No.2 Geology and Mineral Exploration Team Gansu Provincial Bureau of Geology and Mineral Exploration and DevelopmentLanzhou730000China

The newly discovered early Paleozoic Delenuoer ophiolite,in the western margin of the Central Qilian Shan,is composed of serpentinized peridotite,cumulate gabbro,diabase,massive basalt,and pillow *** study presents geochronological and geochemical data for the cumulate gabbro and ***-ICP-MS U-Pb dating of zircons from the cumulate gabbro yielded a magmatic crystallization age of 472±4 *** basalts have normal mid-ocean ridge basalt(N-MORB)compositions and a narrow range ofεNd(t)values(+4.5 to+5.3),which indicates they were derived from a depleted mantle *** the basis of regional geological constraints,it is proposed that the Delenuoer ophiolite is a westward extension of the South Ophiolite Belt(Yushigou-Youhulugou-Donggou-Dongcaohe Ophiolite Belt)in the North Qilian *** Delenuoer ophiolite,along with the Gulangxia-Delenuoer fault,defines the westernmost part of the tectonic boundary between the North and Central Qilian *** ophiolite may have formed during southward subduction of the Qilian Ocean slab during the early Paleozoic.

关键词： Ophiolite Delenuoer Central Qilian Shan Early Paleozoic Tectonic boundary

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Alternating current electroluminescent fibers for textile displays

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National Science Review 2023年第1期10卷 14-16页

作者： zhen Wang xiang Shi Huisheng Peng State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular Scienceand Laboratory of Advanced Materials Fudan University

With the emerging 5G and Internet of Things,wearables are developing vigorously [1].Wearables are expected to be flexible,lightweight,breathable and comfortable to satisfy daily applications[2].Integrating electronic devices into textiles to form an electronic textile(e-textile) will simultaneously meet the above requirements and the need for daily clothes.E-textiles with functions of communicating,sensing and supplying power have been widely explored.

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基于耦合映像格子的明文关联图像加密方案

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聊城大学学报（自然科学版） 2025年第1期38卷 14-22页

作者：张爽李震贵阳人文科技学院大数据与信息工程学院贵州贵阳550025 贵州大学大数据与信息工程学院贵州贵阳550025

明文敏感性是图像加密系统重要的性能指标,用来评估加密系统抵抗差分攻击能力,而明文关联是提高明文敏感性的主要手段。针对明文关联问题,提出一种基于耦合映像格子(CML)的明文关联图像加密方案。该方案首先构建明文关联内部密钥生成模... 详细信息

明文敏感性是图像加密系统重要的性能指标,用来评估加密系统抵抗差分攻击能力,而明文关联是提高明文敏感性的主要手段。针对明文关联问题,提出一种基于耦合映像格子(CML)的明文关联图像加密方案。该方案首先构建明文关联内部密钥生成模型生成明文关联密钥流,然后在密钥流控制下完成加密操作。加密算法首先采用一轮Zigzag置乱和XOR掩码,然后进行Zigzag-CBC扩散,最后再进行一轮Zigzag置乱和XOR掩码输出密文图像。随后采用直方图、相关性分析、差分攻击、信息熵等方法对密码系统进行安全性能分析,实验结果表明,基于耦合映像格子的明文关联图像加密方案具有良好的安全性能,可以满足绝大多数应用场景下的图像加密需求。

关键词：图像加密安全性分析耦合映像格子

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Helicobacter pylori infection in the pharynx of patients with chronic pharyngitis detected with TDI-FP and modified Giemsa stain

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World Journal of Gastroenterology 2006年第3期12卷 468-472页

作者： Jiang-Ping zhang zhen-Hui Peng Ju zhang xiang-Hong zhang Qing Yin zheng Department of Otolaryngology Second Hospitalof Xi'an Jiaotong University Xi'an 710004 Shaanxi ProvinceChina Institute of Genic Diagnosis Fourth Military MedicalUniversity Xi'an 710032 Shaanxi Province China The Jackson Laboratory 600 Main Street BarHarbor ME 04609 United States

AIM： To detect whether there is Helicobacter pylori （Hpylori） colonization in the pharynx mucous membrane of healthy people and whether chronic pharyngitis is related to Hpylori infection. METHODS： Fifty cases of chronic pharyngitis refractory over three months were prospectively studied from March 2004 to August 2004 in the otolaryngology outpatient department of the Second Hospital of Xi＇an Jiaotong University. Template-directed dye-terminator incorporated with fluorescence polarization detection （TDI-FP） and modified Giemsa stain were used to examine pharynx mucous membrane tissue for H pylori colonization in the patients with chronic pharyngitis and the healthy people as a control group. RESULTS： In the control group, no people were detected to have Hpylori in the pharynx. In contrast, in 50 cases with chronic pharyngitis, 19 （38.0%） cases were H pylori positive with a TDI-FP assay and 4 （8%） cases were TDI-FP positive with Giemsa staining in the pharynx. Sixteen of the 50 pharyngitis cases had stomach ailment history, 11 cases （68.8%） of these 16 patients were determined to be H pylori positive in the pharynx with the TDI-FP assay. 2,2 test showed that this infection rate was remarkably higher （P= 0.0007） than that in the cases without stomach ailment history. Giemsa staining showed that 3 cases （18.8%） of the patients with stomach ailment history were infected with H pylori in the pharynx, which was remarkably higher （P = 0.042） than that in the patients without stomach ailment history （1 case, which was 2.9%）. CONCLUSION： H pylori may not be detected in the pharynx of healthy people. Chronic pharyngitis may be related to H pylori infection. The infection rate with Hpylori in the pharynx is higher in patients with stomach ailment histories than in patients without stomach ailment histories, suggesting that chronic pharyngitis may be related to stomach ailment history.

关键词： Chronic pharyngitis H pylori Modified Giemsa stain

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2D phosphides heterostructures on titanium microfiltration membrane for enhanced ampere-level current density overall seawater splitting

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Nano Research 2025年第1期18卷 249-259页

作者： Wenjing Dai Xin Wang Yulong Ma Sisi He Ming Chen Zhaohui Yin Shuheng Tian Maolin Wang Shixiang Yu Hang zhang Yuanzhe Wang Hong Wang Jianxin Li Faming Gao Bowen Cheng Yun Wang zhen Yin Ding Ma Tianjin Key Laboratory of Brine Chemical Engineering and Resource Eco-utilization College of Chemical Engineering and Materials ScienceTianjin University of Science and TechnologyTianjin 300457China State Key Laboratory of Biobased Fiber Manufacturing Technology Tianjin University of Science and TechnologyTianjin 300457China Haian Institute of High-Tech Research Nanjing UniversityHaian 226600China Beijing National Laboratory for Molecular Sciences College of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871China State Key Laboratory of Separation Membranes and Membrane Processes Separation Membrane Science and Technology International Joint Research CentreTiangong UniversityTianjin 300387China Centre for Catalysis and Clean Energy School of Environment and ScienceGold Coast CampusGriffith UniversitySouthportQueensland 4222Australia

The advancement of direct seawater electrolysis is a significant step towards sustainable hydrogen production,addressing the critical need for renewable energy sources and efficient resource ***,direct seawater electrolysis has to face several challenges posed by the corrosiveness of highly concentrated chloride and the competitive chlorine evolution reaction(ClER).To overcome these issues,we designed a novel NiP_(2)@CoP electrocatalyst on a porous titanium microfiltration(Ti MF)*** obtained bifunctional NiP_(2)@CoP catalyst outperforms the Pt/C and IrO_(2),as evidenced by its low overpotentials of 192 and 425 mV at a current density of 500 mA·cm^(-2) for hydrogen evolution reaction(HER)and oxygen evolution reaction(OER)in alkaline seawater(1 M KOH+0.5 M NaCl),***,only 231 and 569 mV overpotentials are required at the current density of 1500 mA·cm^(-2) towards HER and OER in alkaline seawater,*** importantly,no ClER was observed,demonstrating its excellent selectivity to *** selection of porous Ti MF membrane as an electrode substrate further enhances the performance by providing a robust structure that promotes the fast generation and release of gas *** promising outcomes obtained with NiP_(2)@CoP catalysts on Ti MF support,therefore,pave the way for the commercial viability of direct seawater electrolysis technologies at industrial-level current densities.

关键词： direct seawater electrolysis porous titanium microfiltration membrane phosphides heterostructures NiP_(2)@CoP electrocatalyst excellent selectivity to oxygen evolution reaction(OER)

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CCD astrometric observations of 2017 VR12, Camillo and Midas

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Research in Astronomy and Astrophysics 2019年第5期19卷 91-100页

作者： zhen-Jun zhang Yi-Gong zhang xiang-Ming Chen Jian-Cheng Wang Jie Su Yunnan Observatories Chinese Academy of Sciences Key Laboratory of the Structure and Evolution of Celestial Objects Chinese Academy of Sciences University of Chinese Academy of Sciences

We have observed three near-Earth objects(NEOs), 2017 VR12, Camillo and Midas, during *** observations were made with the 1-m telescope, operated by Yunnan Observatories, over two *** precise astrometric positions are derived from 989 CCD observations. The theoretical positions of asteroids are retrieved from the Jet Propulsion Laboratory(JPL) Horizons System and Institut de M′ecanique C′eleste et de Calcul des ′Eph′em′erides(IMCCE). The positions of three asteroids are measured with respect to stars in the Gaia DR2 star catalog. For 2017 VR12, the means(O-C) of right ascension and declination are -0.090′′and-0.623′′respectively based on the published JPL ephemeris, but the corresponding means(O-C) are 3.122′′and-0.636′′based on the published IMCCE ephemeris. The great difference in declination could be explained by several factors.(1) The degraded CCD images caused by the fast apparent motion of the objects lead to a reduction in positioning accuracy.(2) The poor timing system may introduce systematic errors, especially in the high speed direction.(3) The asteroid may be perturbed by Earth when it approaches the Earth too closely. These astrometric results demonstrate that the centroid centering method can reduce the dispersion of non-Gaussian images as compared with the PSF modeling *** Camillo and Midas, the astrometric results are consistent based on the two ephemerides. Implementing a high-precision timing system, and analyzing some astronomical effects and geometric distortions in CCD images should be carefully considered in future works.

关键词： astrometry:astrometric observation NEOs:individual(2017 VR12,Camillo,Midas)

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Stereoselective Construction of Complex Spirooxindoles via Bisthiourea Catalyzed Three-Component Reactions

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Chinese Journal of Chemistry 2018年第12期36卷 1182-1186页

作者： Lin-Lin zhang Ji-Wei zhang Shao-Hua xiang zhen Guo Bin Tan College of Material Science & Engineering Taiyuan University of Technol- ogyTaiyuanShanxi 030024China Department of Chemistry South University of Science and Technology of ChinaShenzhenGuangdong 518055China Academy for Advanced Interdisciplinary Studies Southern University of Science and TechnologyShenzhenGuangdong 518055China

A well‐designed three‐component reaction was developed to construct a class of optically active carbazolespirooxindole‐urazoles in good yields with excellent stereoselectivities via tandem Diels‐Alder reaction and ene‐reaction. The driving force originating from aromatization with in situ generated carbazolespirooxindole and the high reactivity of 4‐phenyl‐3 H ‐1,2,4‐triazole‐3,5‐dione facilitate the ene‐reaction in mild conditions. Control experiments indicated that the excellent stereoselectivities of ene‐reaction most likely came from the spatial configuration of the carbazolespirooxindole. The obtained products could be converted to other synthetic useful structures via diverse functionalization.

关键词： multicomponent reactions asymmetric catalysis bisthiourea Diels‐Alder reaction ene‐reaction complex spirooxindoles

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Multi-variable special polynomials using an operator ordering method

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Frontiers of physics 2020年第5期15卷 119-129页

作者： xiang-Guo Meng Kai-Cai Li Ji-Suo Wang zhen-Shan Yang Xiao-Yan zhang zhen-Tao zhang Bao-Long Liang Shandong Provincial Key Laboratory of Optical Communication Science and Technology School of Physical Science and Information EngineeringLiaocheng UniversityLiaocheng 252059China School of Physics and Electronic Engineering Linyi UniversityLinyi 276000China Shandong Provincial Key Laboratory of Laser Polarization and Information Technology College of Physics and EngineeringQufu Normal UniversityQufu 273165China

Using an operator ordering method for some commutative superposition operators,we introduce two new multi-variable special polynomials and their generating functions,and present some new operator identities and integral formulas involving the two special *** of calculating compli-cated partial differential,we use the special polynomials and their generating functions to concsely address the normalzation,photoount distributions and Wigner distributions of several quantum states that can be realized physically,the rsults of which provide real convenience for further investigating the properties and applications of these states.

关键词： multi-variable special polynomial generating function operator ordering method new operator identity and integral formula Wigner function

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A data-driven approach to RUL prediction of tools

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Advances in Manufacturing 2024年第1期12卷 6-18页

作者： Wei Li Liang-Chi zhang Chu-Han Wu Yan Wang zhen-xiang Cui Chao Niu Department of Mechanical Engineering University College LondonLondonWC1E 7JEUK Shenzhen Key Laboratory of Cross-Scale Manufacturing Mechanics Southern University of Science and TechnologyShenzhen518055GuangdongPeople’s Republic of China SUSTech Institute for Manufacturing Innovation Southern University of Science and TechnologyShenzhen518055GuangdongPeople’s Republic of China Department of Mechanics and Aerospace Engineering Southern University of Science and TechnologyShenzhen518055GuangdongPeople’s Republic of China School of Mechanical and Manufacturing Engineering The University of New South WalesKensingtonNSW2052Australia Baoshan Iron&Steel Co. Ltd.Shanghai200941People’s Republic of China

An effective and reliable prediction of the remaining useful life(RUL)of a tool is important to a metal forming process because it can significantly reduce unexpected maintenance,avoid machine shutdowns and increase system *** study proposes a new data-driven approach to the RUL prediction for metal forming processes under multiple contact sliding *** data-driven approach took advantage of bidirectional long short-term memory(BLSTM)and convolutional neural networks(CNN).A pre-trained lightweight CNN-based network,WearNet,was re-trained to classify the wear states of workpiece surfaces with a high accuracy,then the classification results were passed into a BLSTM-based regression model as inputs for RUL *** experimental results demonstrated that this approach was able to predict the RUL values with a small error(below 5%)and a low root mean square error(RMSE)(around 1.5),which was more superior and robust than the other state-of-the-art methods.

关键词： Remaining useful life(RUL) Bidirectional long short-term memory(BLSTM) Data-driven approach Metal forming

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Determination of Residual Feed Intake and Its Associations with Single Nucleotide Polymorphism in Chickens

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Journal of Integrative Agriculture 2014年第1期13卷 148-157页

作者： XU zhen-qiang CHEN Jie zhang Yan JI Cong-liang zhang De-xiang zhang Xi-quan Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding/Key Lab of Chicken Genetics Breeding and ReproductionMinistry of Agriculture/South China Agricultural University Wens Nanfang Poultry Breeding Co.Ltd.

Marker assisted selection （MAS） for residual feed intake （RFI） is considered to be one of the powerful means to improve feed conversion efficiency, and therefore reduce production costs. To test the inner relationship among body compositions, growth traits and RFI, four models were proposed to assess the extensively explanatory variables accounting for partial variables in feed intake besides metabolic body weight and growth rate. As a result, the original model （Koch＇s model） had the lowest R2 （80.78%） and the highest Bayesian information criterion （1 323.3） value among the four models. Moreover, the effects on RFI caused by single nucleotide polymorphisms （SNPs） were assessed in this study. Twelve SNPs from 7 candidate genes were genotyped in 2 Chinese native strains, rs14743490 of RPLP2 gene showed suggestively significant association with initial body weight in both strains （P〈0.10）. rs15047274 of TAF15 was significantly associated with growth weight, final weight, and feed intake （P〈0.05） in N301 strain, in contrast, it was only suggestively significant associated with feed intake （P〈0.10） in N414 strain, rs15869967 was significantly associated with RFI in N414 strain but not in N301 strain. This study has identified potential genetic markers suitable for MAS in improving the above mentioned traits, but these associations need to be rectified in other larger populations in future.

关键词： RFI model SNPs growth traits association

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