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多模耦合在电磁诱导透明电磁特性中的应用

齐齐哈尔大学学报（自然科学版） 2024年第3期40卷 73-78页

作者：陈秀端朱笑花漳州职业技术学院智能制造学院福建漳州363000 闽南师范大学物理与信息工程学院福建漳州363000

为了实现电磁诱导透明现象,设计一种基于超材料的同时磁场激发的明-明模耦合电磁诱导透明结构,结构由双U型环和双圆环组成。通过改变两类构造的几何参数,实现了在特定频率下的共振,并分析了基于硅基半导体和石墨烯的电控类电磁诱导透明... 详细信息

为了实现电磁诱导透明现象,设计一种基于超材料的同时磁场激发的明-明模耦合电磁诱导透明结构,结构由双U型环和双圆环组成。通过改变两类构造的几何参数,实现了在特定频率下的共振,并分析了基于硅基半导体和石墨烯的电控类电磁诱导透明结构。模型分析结果显示,当耦合距离从5.0 mm到6.0 mm时,双U型环和双圆型环的透射谱中未出现传输窗口。电控类电磁诱导透明结构实验表明,通过调节费米能级,可以有效地调控超材料的透射特性。当费米能级提升至0.5 eV时,透射峰的强度降至59%。研究结果为电磁诱导透明结构的设计和控制提供了理论基础和技术路线。

关键词：多模耦合电磁诱导透明电磁特性超材料

Relations between lymphangiogenesis and the size of pterygium

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International Journal of Ophthalmology(English edition) 2012年第3期5卷 312-316页

作者： Lin Liu, xiu-hua Jia General Hospital of Guangzhou Military Command of Chinese PLA Guangzhou 510010 Guangdong Province China Department of Ophthalmology the Third Affiliated Hospital Sun Yat-sen University Guangzhou 510630 Guangdong Province China Department of Ophthalmology Guangzhou Children's Hospital Guangzhou 510120 Guangdong Province China

AIM: To examine the relations between lymphangiogenesis and the size of pterygium. METHODS: Tissues from 88 primary and 34 recurrent pterygia were evaluated, and those from 7 nasal epibulbar conjunctiva segments were used as controls. Pterygium slices from each patient were stained with LYVE-1 monodonal antibodies to identify lymphatic microvessel for calculating lymph-vascular area (LVA), lymph-microvascular density (LMD) and lymph-vascular luminal diameter (LVL). Also, the relations between lymphangiogenesis (measuring by LVA, LMD and LVL) and the size of pterygium (extension, width and area) were explored. RESULTS: There were a few LYVE-1 ((+)) lymphatic vessels in normal epibulbar conjunctiva segments. However, the number of lymphatic vessels slightly increased in primary pterygia and dramatically increased in recurrent pterygia. LVA, LMD and LVL significantly increased in recurrent pterygia in comparison with primary pterygia (all P<0.05). Both LMD and LVA were correlated with the width and area of pterygia (both P<0.05), and LVA was also correlated with the extension of pterygia(P<0.05). CONCLUSION: Lymphangiogenesis is correlated with the size of pterygium. The outgrowth of lymphatic vessels might contribute to the development of pterygia.

关键词： pterygia lymphatic vessel size

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微塑料与秸秆添加对橘园土壤氮磷淋溶的影响

环境科学 2024年第10期45卷 6061-6067页

作者：郑志杰熊兴军张秀玲孙伟高华郑勇胡荣桂林杉华中农业大学资源与环境学院农业农村部长江中下游耕地保育重点实验室中国电建集团昆明勘测设计研究院有限公司乡村振兴研究中心山东正维勘察测绘有限公司武汉市蔡甸区农业技术推广服务中心

为探究微塑料输入与秸秆添加对橘园土壤氮磷淋溶的影响，以湖北省当阳市橘园土壤为研究对象，进行室内土柱淋溶模拟试验，分析不同处理对土壤氮磷淋溶特征的影响.结果显示：（1）仅微塑料输入下，微塑料输入量增加会提高土壤（TN、NO3--... 详细信息

为探究微塑料输入与秸秆添加对橘园土壤氮磷淋溶的影响，以湖北省当阳市橘园土壤为研究对象，进行室内土柱淋溶模拟试验，分析不同处理对土壤氮磷淋溶特征的影响.结果显示：（1）仅微塑料输入下，微塑料输入量增加会提高土壤（TN、NO3--N、NH4+-N和TP）淋溶量.（2）秸秆添加下，微塑料输入量增加，减少了土壤TN和NO3--N淋溶量，提高了土壤NH4+-N和TP淋溶量.（3）微塑料输入下，土壤氮磷淋溶量的关键影响因子为土壤容重和含水量；秸秆添加下，主要受土壤碳氮含量影响；其中微塑料输入与秸秆添加均显著提高土壤pH，但其对氮磷淋溶量的路径系数未达显著相关.结果显示，聚丙烯微塑料输入与秸秆添加对土壤氮磷淋溶的影响与微塑料的输入量和是否添加秸秆有关.研究表明，微塑料的输入会提高土壤氮磷淋溶量；尽管秸秆添加条件下，可以减少由微塑料输入引起的氮素淋溶损失，但土壤磷素淋溶损失却有显著提高.

关键词：秸秆微塑料(MPs) 氮素橘园土壤淋溶

Use of high-resolution X-ray computed tomography and 3D image analysis to quantify mineral dissemination and pore space in oxide copper ore particles

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International Journal of Minerals,Metallurgy and Materials 2017年第9期24卷 965-973页

作者： Bao-hua Yang Ai-xiang Wu Guillermo A.Narsilio xiu-xiu Miao Shu-yue Wu Information Science and Engineering School Hunan International Economics UniversityChangsha 410205China Department of Infrastructure Engineering The University of MelbourneVictoria 3010Australia Key Laboratory of High-efficient Mining and Safety of Metal Mines(Ministry of Education) University of Science and Technology BeijingBeijing 100083China

Mineral dissemination and pore space distribution in ore particles are important features that influence heap leaching performance. To quantify the mineral dissemination and pore space distribution of an ore particle, a cylindrical copper oxide ore sample (I center dot 4.6 mm x 5.6 mm) was scanned using high-resolution X-ray computed tomography (HRXCT), a nondestructive imaging technology, at a spatial resolution of 4.85 mu m. Combined with three-dimensional (3D) image analysis techniques, the main mineral phases and pore space were segmented and the volume fraction of each phase was calculated. In addition, the mass fraction of each mineral phase was estimated and the result was validated with that obtained using traditional techniques. Furthermore, the pore phase features, including the pore size distribution, pore surface area, pore fractal dimension, pore centerline, and the pore connectivity, were investigated quantitatively. The pore space analysis results indicate that the pore size distribution closely fits a log-normal distribution and that the pore space morphology is complicated, with a large surface area and low connectivity. This study demonstrates that the combination of HRXCT and 3D image analysis is an effective tool for acquiring 3D mineralogical and pore structural data.

关键词： high-resolution X-ray computed tomography 3D image analysis ore particles mineral dissemination pore space

A New Cobalt(Ⅱ)Polymer Based on 1-Butylben-zimidazole and Terephthalate Mixed-ligands:Crystal Structure and Weak Interactions

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Chinese Journal of Structural Chemistry 2010年第7期29卷 1033-1038页

作者： WANG Jian-hua ZHENG Zhan-Ying WU xiu-Mei WANG xiu-Guang GUO Jian-hua LIU Qing-Xiang Tianjin Key Laboratory of Structure and Performance for Functional Molecule College of Chemistry and Life Science Tianjin Normal University Tianjin 300387 China State Key Laboratory of Element-organic Chemistry Nankai University Tianjin 300071 China

A new cobalt（Ⅱ） polymer with quasi-rectangular cavities, [Co（L）2（TP）·H2O]n 1 （L=1-butylbenzimidazole, TP = terephthalate ion） has been prepared by means of self-assembly of 1-butylbenzimidazole, terephthalic acid and Co（NO3）2·6H2O. The structure of 1 was characterized by X-ray diffraction analysis. In the crystal packing, 2-D supramolecular layers are formed via π-π stacking interactions. The fluorescence emission spectra of L and 1 are described.

关键词： benzimidazole terephthalic acid cobalt,π-π interactions

不同大豆品种幼苗对低磷胁迫的生理响应及综合评价

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南方农业学报 2024年第2期55卷 451-459页

作者：杨通黎杨松花王晶琴马秀国陈竹贵州大学农学院贵州贵阳550025 毕节市农业生态环境与资源保护站贵州毕节551700 绥阳县农业农村局贵州遵义563300

【目的】研究不同大豆品种幼苗对低磷胁迫的响应,为耐低磷大豆的筛选和育种改良提供理论依据。【方法】以13个大豆品种[黔豆11号(Qd11)、商豆1013(Sd)、牛毛黄豆(Nm)、中黄13号(Zh13)、七星1号(Qx1)、华春6号(Hc6)、中黄30(Zh30)、华夏3... 详细信息

【目的】研究不同大豆品种幼苗对低磷胁迫的响应,为耐低磷大豆的筛选和育种改良提供理论依据。【方法】以13个大豆品种[黔豆11号(Qd11)、商豆1013(Sd)、牛毛黄豆(Nm)、中黄13号(Zh13)、七星1号(Qx1)、华春6号(Hc6)、中黄30(Zh30)、华夏3号(Hx3)、矮选(Ax)、华夏2号(Hx2)、绥阳豆(Sy)、中黄301(Zh301)和中黄61(Zh61)]为试验材料,设正常供磷(0.5 mmol/L KH_(2)PO_(4))和低磷胁迫(0.02 mmol/L KH_(2)PO_(4))2个磷处理,进行沙培试验,研究低磷胁迫下不同大豆品种幼苗的生长形态和生理特性,并通过隶属函数法综合评价不同大豆品种的耐低磷能力。【结果】低磷胁迫下,大豆的株高、茎粗、叶面积、地上部干重和磷含量有降低趋势,而根冠比和地上部磷利用效率有上升趋势;低磷胁迫也对大豆叶片的SPAD值和荧光参数产生影响,SPAD值、最大荧光产量(F_(m))、可变荧光(F_(v))、PSⅡ潜在活性(F_(v)/F_(o))、PSⅡ最大光化学效率(F_(v)/F_(m))多为降低趋势,而初始荧光(F_(o))多为升高趋势;此外,低磷胁迫下大豆叶片丙二醛(MDA)含量及超氧化物歧化酶(SOD)和过氧化物酶(POD)活性有上升趋势。基于耐低磷能力综合值(D),可将13个大豆品种分为耐低磷型、中间型和低磷敏感型,其中耐低磷型品种(Qx1、Sy和Hx2)整体表现为生理调节能力较强,有较高的地上部磷利用效率,能通过提高抗氧化酶活性降低叶片损伤,维持正常光系统途径;中间型品种(Ax、Zh30、Hc6和Qd11)叶片膜损伤较低,但光系统受损较大;低磷敏感类型大豆品种(Zh301、Hx3、Zh61、Zh13、Sd和Nm)地上部磷利用效率降低,生理调节能力较弱,叶片功能受损严重。【结论】不同大豆品种对低磷胁迫的响应程度存在差异,参试材料中Qx1、Sy和Hx2的耐低磷能力相对较强,能更好适应低磷环境来保证正常的生长发育和生理活动。

关键词：大豆低磷胁迫苗期形态指标生理性状

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Stereoselective Palladium-catalyzed Cross-coupling of （2-Amido-l-phenylpropyl）zinc Compounds with Aryl Bromides

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Chemical Research in Chinese Universities 2013年第4期29卷 678-681页

作者： TANG Shi ZHOU Dong LI Shu-hua WANG nai-xing College of Chemistry and Chemical Engineering Jishou University Jishou 416000 P. R. China Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing 100190 P R. China

A controllable diastereoselective C（sp2）-C（sp3） Negishi coupling reaction of secondary benzylic zinc reagents with aryl bromides to form medicinally important 2-arylphenylethylamines was *** the presence of Pd（OAc）2 and 2-dicyclohexylphosphino-2＇,6＇-dimethoxybiphenyl（S-phos）,open-chain（2-amido-1-phenylethyl）zinc reagent bearing a β-NHAc or NHCHO group undergoes coupling reaction to give syn-1-arylphenylethylamine mainly,whereas the zinc reagent bearing a sterically hindered β-amido group,for example NHCOC（CH3）2OTBS undergoes the coupling reaction to yield anti-1-arylphenylethylamines with a configuration *** addition,a working mechanism for the stereoselective Negishi cross-coupling was also proposed.

关键词： Palladium Stereoselective Negishi coupling Benzylic zinc 2-Arylphenylethylamine

积分制绩效考核在PIVAS管理中的应用及问题探讨

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医院管理论坛 2024年第6期41卷 39-41页

作者：吴杨王秀詹三华铜陵市人民医院

目的考察积分制绩效考核方法在静脉用药调配中心(PIVAS)管理中的应用效果。方法对PIVAS人员绩效分配采用积分制考核:(1)制定积分细则,将绩效分为基础绩效和考核绩效两部分,考核绩效部分按积分制考核结果进行分配;(2)评价指标:比较实施... 详细信息

目的考察积分制绩效考核方法在静脉用药调配中心(PIVAS)管理中的应用效果。方法对PIVAS人员绩效分配采用积分制考核:(1)制定积分细则,将绩效分为基础绩效和考核绩效两部分,考核绩效部分按积分制考核结果进行分配;(2)评价指标:比较实施前后调配人员工作效率和工作质量以及对绩效分配的满意度。结果实施积分制绩效考核后,调配时间比实施前缩短约20分钟,差错率从实施前三个月的1.82‰下降至近三个月的0.93‰,差异具有统计学意义(p<0.05);调配人员对绩效分配的满意度明显提高,差异具有统计学意义(p<0.05)。结论在PIVAS日常管理中应用积分制绩效考核,量化了考核指标,增强了工作责任心,提高了工作积极性,提升了工作效率和工作质量。

关键词：静脉用药调配中心积分制调配人员绩效考核

Relationship of VEGF/VEGFR with immune and cancer cells:staggering or forward?

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Cancer Biology & Medicine 2016年第2期13卷 206-214页

作者： Yu-Ling Li hua Zhao xiu-Bao Ren Department of Biotherapy Tianjin Medical University Cancer Institute and Hospital National Clinical Research Center for Cancer Key Laboratory of Cancer Immunology and Biotherapy Research Center of Lung Cancer

Vascular endothelial growth factor(VEGF) is primarily known as a proangiogenic factor and is one of the most important growth and survival factors affecting the vascular endothelium. However, recent studies have shown that VEGF also plays a vital role in the immune environment. In addition to the traditional growth factor role of VEGF and VEGF receptors(VEGFRs), they have a complicated relationship with various immune cells. VEGF also reportedly inhibits the differentiation and function of immune cells during hematopoiesis. Dendritic cells(DCs), macrophages, and lymphocytes further express certain types of VEGF *** can be secreted as well by tumor cells through the autocrine pathway and can stimulate the function of cancer *** review will provide a paradigm shift in our understanding of the role of VEGF/VEGFR signaling in the immune and cancer environment.

关键词： Vascular endothelial growth factor (VEGF) VEGF receptors (VEGFRs) dendritic cell (DC) macrophage T lymphocyte tumor