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Facile Solution-based Synthesis and Optical Properties of Co3O4 Nanoparticles at Low-temperature

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Chemical Research in Chinese Universities 2013年第6期29卷 1040-1044页

作者： li yun-ling ZHAO Jing-zhe ZHAO Yan HAO Xin-li HOU Zhen-yu College of Chemistry and Chemical Engineering Henan Institute of Science and TechnologyXinxiang 453003 P.R.China College of Chemistry and Chemical Engineering Hunan University Changsha 410082 P.R.China

Cobalt oxide（C0304） with different morphologies was achieved by a simple solution-based method. Various parallel experiments show that several experimental parameters, such as the concentrations of NaOH and ethylene glyeol（EG）, play important roles in the morphological controlling of C0304 nanoparticles. A lower concen- tration of NaOH favors quasi-spherical product with a uniform size of about 15 nm, whereas a higher concentration of NaOH generally leads to the formation of nanoplates with wide size distribution. In addition, C0304 nanorods were also obtained partially by introducing a certain amount of EG. A possible mechanism was proposed for the selective formation of C0304 with various morphologies. X-Ray diffraction（XRD）, infrared（IR） spectrometry, scanning elec- tron microscopy（SEM）, transmission electron microscopy（TEM） and UV-Vis spectrometry were used to characterize the samples.

关键词： Cobalt oxide Solution-based synthesis Nanostructure Optical property

Europium Activated Aluminum Organic Frameworks for Highly Selective and Sensitive Detection of Fe and Cr(Ⅵ) in Aqueous Solution

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Chinese Journal of Structural Chemistry 2020年第11期39卷 1958-1964页

作者： ZHANG Zhen FANG Qi-Hui ZHUANG Zan-Yong HAN Yang li ling-yun YU Yan Key Laboratory of Eco-materials Advanced Technology College of Materials Science and EngineeringFuzhou UniversityFuzhou 350108China

The aluminum based MOFs compound, MIL-96(Al), has been studied as a luminescence sensor by incorporating of Eu3+ ions, which renders the compound strong red-light emission. The as-synthesized MIL-96(Al):Eu3+ nanocrystals exhibit water dispersibility and environmental stability, which are general requirement for an ideal sensing material. The MIL-96(Al):Eu3+ nanocrystals show excellent selective detection ability on Fe3+ ions in aqueous solution with value of low detection limit 20 μM. Meanwhile, it also exhibits excellent selective detection ability on CrO42- and Cr2O72- in aqueous solution with value of low detection limit 10 and 22 μM, respectively. The results of this study show that MIL-96(Al):Eu3+ nanocrystals could be used as a multi-responsive luminescent senor for Fe3+ and Cr(Ⅵ) species in aqueous solution. The possible luminescence quenching mechanism has also been discussed.

关键词： luminescent sensor selective detection quenching mechanism

Transcendental Meromorphic Solutions of Second-Order Algebraic Differential Equations

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Journal of Mathematical Research and Exposition 2011年第3期31卷 497-502页

作者： Hai Chou li ling yun GAO Department of Mathematics Ji'nan University Guangdong 510632 P. R. China

Using Nevanlinna theory of the value distribution of meromorphic functions,we discuss some properties of the transcendental meromorphic solutions of second-order algebraic differential equations,and generalize some re... 详细信息

关键词： meromorphic functions transcendental meromorphic solutions second-order algebraic differential equations.

Global Analysis of Cytosine Methylation and Proteome Under Cold Treatment in Brassica napus

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Journal of Integrative Agriculture 2014年第10期13卷 2170-2176页

作者： WEI Fang HU Jie CUI Ming-zhu ZHANG Yan-hui li yun-ling TIAN Bao-ming School of life Sciences Zhengzhou University Zhengzhou Key Laboratory of Plant Molecular Breeding

Cytosine methylation/demethylation plays pivotal roles in regulating gene expression at a genome-wide level. However, limited reports are available to reveal correlating changes of cytosine methylation and proteomic expression in Brassica napus so far. Therefore, in the present study, global cytosine methylation and proteome were analysed in B. napus after cold treatment by methylation-sensitive amplified polymorphism （MSAP） and two-dimensional protein electrophoresis technology （2-DE）. The results showed that the lowered genome-wide DNA methylation status was revealed after cold treatment, and about 0.88% of discrepancy in DNA methylation was detected between the non-flowering and flowering plants after cold treatment. Moreover, the 52 significantly up-regulated proteins emerged in comparison with the 36 down-regulated proteins, as well as the 14 proteins exclusively detected in the flowering plants. Intriguingly the 8 specifically expressed proteins in the non-flowering plants disappeared in the flowering plants with cold treatment. Therefore, these present data proved that the correlating changes of cytosine methylation and proteomic expression were evidenced under cold treatment in B. napus.

关键词： DNA methylation/demethylation MSAP 2-DE cold treatment Brassica napus

HSVTK Gene Therapy for CarcinoembryonicAntigen-Producing Human Lung Cancer Cells

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Wuhan University Journal of Natural Sciences 1999年第3期4卷 367-371页

作者： Xiao Geng-fu Qi Yi-peng Cheng Xuan-hong li ling-yun College of life Sciences Wuhan University Wuhan China

The long-term success of gene therapy for cancer relies heavily on the development of effective targeting systems. We investigate the possibility of targeted gene therapy using promoter of carcinoembryonic antigen (CEA) gene. By using luciferase reporter gene, we found that CEA promoter exhibit 16 times high activity in CEA-producing lung cancer cells, A549 than in nonproducing cells, Hela. We also constructed a recombinant expression plasmid pCEATK, in which CEA promoter drives the effector gene, thymidine kinase gene of Herpes Simplex Virus (HSVTK). A549 cells transfected with pCEATK became 865 times more sensitive to ganciclovir (GCV) than the control cells. However, Hela cells transfected with this plasmid remained resistant to GCV. These data indicate the potential for targeted gene therapy using the CEA promoter against CEA-producing tumor cells, such as lung cancer cells.

关键词： carcinoembryonic antigen Herpes Simplex Virus thymidine kinase gene gene therapy

Color-tunable Upconversion Properties of Tb^3+/Er^3+/Yb^3+ Tri-doped Na5Gd(WO4)4 Crystals

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Chinese Journal of Structural Chemistry 2020年第2期39卷 301-309,186页

作者： XUE Geng CHEN Xin ZHENG Chuan-Xin WANG Guo-Qiang li ling-yun College of Civil Engineering Fuzhou UniversityFuzhou 350108China Key Laboratory of Eco-materials Advanced Technology College of Materials Science and EngineeringFuzhou UniversityFuzhou 350108China

In this work, novel phosphors Na5Gd(WO4)4: Tb^3+/Yb^3+ and Na5Gd(WO4)4: Tb^3+/Er^3+/Yb^3+ phosphors were synthesized by the solid state reaction method. The photoluminescence properties were investigated. The introduction of Er^3+ to NGW: Tb^3+/Yb^3+ was used to modify the chromaticity coordinates, then providing a good color tunable property. The change in the chromaticity coordinates induces the shift of emission color from yellow-green to blue-green for NGW: Tb^3+/Er^3+/Yb^3+ as the temperature increases. All the results indicate that the NGW: Er^3+/Tb^3+/Yb^3+ phosphors may be used as optical temperature sensing materials.

关键词： Na5Gd(WO4)4:Tb3+/Er3+/Yb3+phosphor upconversion luminescence color-tunable

Psychological trauma of funnel chest in adolescents and the appropriate age for minimally invasive surgery repair

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Chinese Medical Journal 2013年第15期126卷 2876-2880页

作者： ZHAO Jing LUO li XIAO li-jun GU ling-yun SUN Tian-sheng Beijing Peoples liberat Army Mil Gen Hosp Dept Thorac Surg Beijing 100700 Peoples R China Beijing Peoples liberat Army Mil Gen Hosp Dept Psychol Beijing 100700 Peoples R China Beijing Peoples liberat Army Mil Gen Hosp Dept Tradit Chinese Med Beijing 100700 Peoples R China Beijing Peoples liberat Army Mil Gen Hosp Dept Osteol Beijing 100700 Peoples R China Beijing Peoples liberat Army Mil Gen Hosp Bayi Children Hosp Beijing 100700 Peoples R China

Background Funnel chest has a negative effect on adolescents and it has a strong effect on adolescents＇ psychological and behavior. This study aimed to investigate the psychological characteristics and factors that affect adolescents with funnel chest and to evaluate the relationship between the patients＇ age and their physiological and psychological health. We aimed to establish an age model for maximum surgery benefits for funnel chest patients to provide an objective basis for choosing surgery. Methods The study adopted a general evaluation approach to assess the risk and benefits of minimally invasive surgery for funnel chest. The funnel chest index, the Symptom Checklist-90, and the Eysenck Personality Questionnaire were used as assessment tools to observe physiological and psychological features in funnel chest patients. A sample of 234 adolescents with funnel chest was selected from a third-grade class-A hospital in Beijing. Age groups were adopted as an independent variable, and other factors in funnel chest patients were dependent variables. Results There was a significant difference in the relapse rate for funnel chest in the different age groups （X2=11.883, P=-O.008）. There was a higher relapse rate in patients of 〈10 or 〉-19 years old than in patients of 11-18 years old. There was a significant difference in the SCL-90 total score in the different age groups （F=12.538, P=-0.0001）, the patients older than 13 years had a higher score than those younger than 13 years in the SCL-90. There was a significant difference in the standard score of E （introversion/extraversion） in the different age groups （F=10.06, P=0.0001）. There was also a significance in the funnel chest index before surgery in the different psychological scales （P〈0.01）, with a higher funnel chest index score associated with more obvious psychological trauma. Age and the number of variables, including the relapse rate, SCL-90 score, standard score of E, and standard score of N in the EPQ were

关键词： nuss, surgical procedures, minimally invasive funnel chest mental disorders operation optimum age

Sex-dependent alterations in extracellular vesicles linking chronic spinal cord injury to brain neuroinflammation and neurodegeneration

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Neural Regeneration Research 2025年第2期20卷 483-484页

作者： yun li Junfang Wu Department of Anesthesiology&Shock Trauma and Anesthesiology Research(STAR)CenterUniversity of Maryland School of MedicineBaltimoreMDUSA

Traumatic spinal cord injury(SCI)is a devastating exogenous injury with long-lasting consequences and a leading cause of death and disability *** in assistive technology,rehabilitative interventions,and the ability to identify and intervene in secondary conditions have significantly increased the long-term survival rate of SCI patients,with some people even living well into their seventh or eighth *** survival changes have led neurotrauma researchers to examine how SCI interacts with brain *** health and epidemiological data showed that patients with long-term SCI can have a lower life expectancy and quality of life,along with a higher risk of comorbidities and complications.

关键词： alterations inflammation injury

Systematic-bit-selection distributed with selective-relaying

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Journal of Beijing Institute of Technology 2014年第1期23卷 73-77页

作者： HOU Shu-juan li ling-yun QIN Xue-fang School of Information and Electronics Beijing Institute of Technology Beijing 100081 China

An improved distributed turbo coding （DTC） scheme, namely, systematic-bit-selection DTC, is proposed for a two-hop relay network implementing selective-relaying （SR）. In the scheme, source broadcasts a punctured turbo code in order to increase the successful decoding rate of relay. The relay forwards systematic-bit to the destination in case of successful cyclic redundancy check （CRC）. From the two versions of systematic-bit coming from relay and source respectively, the des- tination selects the one with higher signal-to-noise ratio （SNR） for turbo decoding. Simulation re- suits show the improved bit error rate （BER） performance of our scheme.

关键词： distributed coding relay network turbo coding selective-relaying