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Effects of the Spatial Coupling of Water and Fertilizer on the Chlorophyll Fluorescence Parameters of Winter Wheat Leaves

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Agricultural Sciences in China 2011年第12期10卷 1923-1931页

作者： SHEN yu-fang li Shi-qing State Key Laboratory of Soil Erosion and Dryland Farming on Loess Plateau/Northwest A＆F University Yangling 712100 P.R.China

Wheat is an important agricultural crop in the Loess region of China, where there is drought stress and low availability of soil nitrogen and phosphorus. Using a pulse modulation fluorometer, we studied the effects of water, nitrogen, and phosphorus on the kinetic parameters of chlorophyll fluorescence in winter wheat. The wheat was grown in layered columns of Eum-Orthic Anthrosol （Cinnamon soil）, with the water content and nutrient composition of each layer controlled. The results showed that the kinetic parameters of chlorophyll fluorescence were sensitive to water stress. The basic fluorescence （F0） of leaves was higher in the dry treatment （0-30 cm layer at 40-45% of field capacity, 30-90 cm at 75-80% of field capacity） compared to the wet treatment （entire soil column at 75-80% of field capacity）. The maximal fluorescence （Fm）, the variable fluorescence （Fv）, the photochemical efficiency （Fv/Fm） and potential activites （Fv/F0） of photosystem 2 （PS2） were significantly lower in the dry treatment. Although drought stress impaired PS2 function, this effect was significantly ameliorated by applying P or NP fertilizer, but not N alone. P application increased FJFm, both in well-watered and water stressed plants, especially when fertilizer was applied throughout the column or within the top 30 em of soil. A combined fertilizer improved photosynthesis in well watered plants, with Fm and F,fFm being the highest when fertilizer was applied throughout the columns. For drought stressed, plants FJFm was significantly greater when combined fertilizer was added within the top 30 cm of soil. We concluded that, when growing winter wheat in both arid and semi-arid parts of the Loess region of China, it is important to guarantee the nutrient supply in the top 30 cm of the soil.

关键词： water stress nutrient spatial coupling chlorophyll fluorescence column experiment

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The Death of an Auteur:Qiu Huadong’s Confessionat Noon and the Spiritual Crisis of Intellectuals

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Frontiers of literary Studies in China-Selected Publications from Chinese Universities 2020年第1期14卷 76-98页

作者： fang-yu li Division of Humanities New College of FloridaFL 34243USA

Written by Qiu Huadong in 2000,Confession at Noon(Zhengwu de gongci)is a novel about the life of a renowned auteur one year after his *** at the end of the twentieth century,the story highlights the social and political change of the 1990s and its impact on the spiritual condition of *** novel also addresses the changing role of writers as they confront new challenges presented by the rapid modernization and economic progress at the turn of the *** this paper,I illustrate the ways in which Qiu unravels the spiritual agony of intellectuals through the portrayal of a film director’s dramatic life.I focus particularly on how Qiu uses narrative devices such as intertexuality and pastiche to illuminate the spiritual crisis and changing social position of intellectuals in the 1990s,and how he inserts fictional selves in the storytelling process to rethink his role as a writer-intellectualin the new era.

关键词： Qiu Huadong intellectuals writers identity spiritual crisis

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Grinding Properties of Abandoned Concrete

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Journal of China University of Mining and Technology 2007年第2期17卷 281-285页

作者： ZHENG fang-yu WANG li-jiu li Qiang School of Civil and Hydraulic Engineering Dalian University of Technology Dalian Liaoning 116024 China

The grinding properties of abandoned concrete, which consists primarily of hardened cement, limestone aggregate and river sand, are studied. Theoretical models of grinding are used to explain the experimental observation. The results show that 1) The principle disintegration mechanism of hardened cement and river sand is volumetric grinding, although at later stages grinding of cement becomes difficult because of its flaked structure; 2) The lime- stone grinding process can be divided into two steps. First, volumetric grinding, with an obvious component of surface grinding, followed by primarily surface grinding as the micro-particle content increases; 3) Initially, the principle mechanism of grinding limestone and river sand is volumetric grinding, albeit less efficient grinding than if these components were ground separately, and; 4) After 10 to 20 min of grinding the grinding bottleneck phenomenon ap- pears and after 20 min of grinding the content of micro-particles is large and surface grinding is the main mechanism while the particle size of the mixture is smaller than that of separately ground river sand and cement but bigger than that of separately ground limestone.

关键词： abandoned concrete cement stone limestone river sand grinding

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The first facile total synthesis of natural (3R,4R,6S)-3,4-epoxybisabola-7(14),10-dien-2-one

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Chinese Chemical Letters 2009年第9期20卷 1017-1018页

作者： Zhi Yong Tang Chen Xi Zhang li Jing fang yu lin li State Key Laboratory of Applied Organic Chemistry and Institute of Organic Chemistry Lanzhou University Lanzhou 730000 China

3,4-Epoxybisabola-7（14）,10-dien-2-one, a natural sesquiterpoind, was first synthesized from （-）-carvone through 7 steps, in an overall yield of 35.9%. The key step was the allylation and then a substrate-directable epoxidation was committed successfully. 2009 Zhi Yong Tang. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.

关键词： Alkylation Epoxidation Synthesis

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Synergistic Effect of Mixed Cosurfactants on Transdermal Delivery of Indomethacin from O/W Microemulsion

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Chemical Research in Chinese Universities 2013年第2期29卷 338-343页

作者： liNG Ying yu Meng GUO fang li Nan TAN Feng-ping Tianjin Key Laboratory of Modern Drug Delivery and High-Efficiency School of Pharmaceutical Science and Technology Tianjin University Tianjin 300072 P. R. China

t Since large amounts of oils, surfactants and penetration enhancers used in microemulsion systems might lead to seriously skin irritation, the percutaneous absorption and penetration of indomethacin（IMC, model drug） from O/W microemulsion were enhanced by simply changing the composition of cosurfactants. Pseudo-ternary phase dia- grams were constructed with mixed cosurfactants at different ratios. Hairless rat skin was used as a barrier for per- meation experiments. Four formulations were prepared with fixed oil, surfactant and different cosurfactant con- tent（4%, 20% and 20%, mass fraction）, and formulation F4 with menthol added was evaluated to compare the en- hancement effect of it with those of mixed cosurfactants. The O/W microemulsion region was the largest when the mass ratio of ethanol/transcutol was 1：1. However, the region changed slightly for the system with incorporated mixed cosurfactants propylene glycol/transcutol. The flux and skin retention of IMC from O/W microemulsion with mixed cosurfactants were much higher than that with single cosurfactant（P〈0.01）, while incorporation of menthol would only enhance the drug flux through the skin. To conclude, mixed cosufactants could affect the phase behavior and improve the percutaneous absorption and penetration of IMC. Based on this, it provided a promising solution to enhance drug release from microemulsions without raising potential skin damage.

关键词： O/W microemulsion Mixed cosurfactant Transdermal drug delivery Menthol

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Generation of Four-Mode Cluster-Type Entangled Coherent States in Free-Traveling Optical Fields

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Communications in Theoretical Physics 2011年第3期55卷 426-430页

作者： HE Dai-Guo DONG yu-li fang Jian-Xing QIAN li HU Jie School of Physical Science and Technology Suzhou University Suzhou 215006 China

In this paper, we propose an optical scheme to generate four-mode cluster-type entangled coherent states （ECSs） in free traveling optical fields by using two single-photon sources, coherent state sources, beam splitters, pho- todetectors, cross-Kerr media, and phase shifters. And the success probability of the states preparation is calculated. At last we discuss the experimental feasibility of such proposal.

关键词： cluster states coherent states beam splitters cross-Kerr media

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The First Total Synthesis of Natural 6β-Cinnamoyloxy-1α- hydroxy-5, 10-bis-epi-eudesm-4-en-3-one

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Chinese Chemical Letters 2006年第10期17卷 1290-1292页

作者： Chen ZHANG Guo Jun ZHEN Jin Chun CHEN li Jing fang yu lin li State Key Laboratory of Applied Organic Chemistry Lanzhou University Lanzhou 730000

The first total synthesis of natural 6β-cinnamoyloxy-1α-hydroxy-5, 10-bis-epi- eudesm-4-en-3-one （1）, a highly complex natural eudesmane, was described.

关键词： 6β-Cinnamoyloxy-1α-hydroxy-5,10-bis-epi-eudesm-4-en-3-one C- 1 oxygenated eudesmane total synthesis.

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Ring-opening Polymerization ofε-Caprolactone Using Lanthanide Tris(4-tert-butylphenolate)s as a Single-component Initiator

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Chinese Chemical Letters 2003年第10期14卷 1021-1023页

作者： Cui Ping yu, li fang ZHANG, Zhi Quan SHEN Institute of Polymer Science, Zhejiang University, Hangzhou 310027 Institute of Polymer Science Zhejiang University Hangzhou 310027 China

The ring-opening polymerization of e-caprolactone (CL) initiated by novel single lanthanide tris(4-tert-butylphenolate)s [Ln(OTBP)3] is reported. Single-component La(OTBP)3 can effectively prepare polycaprolactone (PCL) with over 90% yield and viscosity average molecular weight about 60 x 10 under quite mild conditions: molar ratio of CL to initiator is 1000, 60 C, 2 h in toluene. Mechanism study indicates that the monomer inserts into the growing chain via the break of acyl-oxygen bond of CL.

关键词： Lanthanide tris(4-tert-butylphenolate)s e-caprolactone ring-opening polymerization.

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Breast metastases from rectal carcinoma

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Chinese Medical Journal 2011年第8期124卷 1267-1269页

作者： li Jia fang yu li Ang li Fei Department of General Surgery Xuanwu Hospital Capital MedicalUniversity Beijing 100053 China

Metastases to the breast from extramammary neoplasms are very rare, constituting 2.7% of all malignant breast tumours. The most common primary tumor metastatic to the breast is primary breast cancer. Rectal cancer metastasizing to the breast is extremely rare. We report a case of aggressive rectal carcinoma with metastasis to the breast.

关键词： breast metastases rectal carcinoma malignant

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Multiple “Omics” data-based biomarker screening for hepatocellular carcinoma diagnosis

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World Journal of Gastroenterology 2019年第30期25卷 4199-4212页

作者： Xiao-Na liu Dan-Ni Cui yu-fang li yun-He liu Gang liu Lei liu Institutes of Biomedical Sciences Fudan University

The huge prognostic difference between early and late stage hepatocellular carcinoma(HCC)is a challenging diagnostic ***-fetoprotein is the mostly widely used biomarker for HCC used in the clinic,however it’s sensitivity and specificity of is not *** development and application of multiple biotechnologies,including next generation sequencing,multiple“omics”data,that include genomics,epigenomics,transcriptomics,proteomics,metabolomics,metagenomics has been used for HCC diagnostic biomarker *** biomarkers/panels/models have been identified and validated at different clinical levels.A large proportion of these have a good diagnostic performance for HCC,especially for early *** this article,we reviewed the various HCC biomarkers derived from“omics”data and discussed the advantages and disadvantages for diagnosis HCC.

关键词： Hepatocellular carcinoma Diagnosis Circulating tumor cells Exosomes Circulating tumor DNA RNA Metabolomics Protein

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