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Construction of wavelength-tunable DSE quinoline salt derivatives by regulating the hybridization form of the nitrogen atom and intramolecular torsion angle

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Chinese Chemical Letters 2024年第10期35卷 315-320页

作者： kuan Deng Fei Yang Zhi-Qi Cheng Bi-Wen Ren hua Liu Jiao Chen Meng-Yao She Le Yu Xiao-Gang Liu Hai-Tao Feng Jian-Li Li Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education Shaanxi Key Laboratory for Carbon Neutral TechnologyCollege of Chemistry&Materials ScienceNorthwest UniversityXi'an710127China Key Laboratory of Resource Biology and Biotechnology in Western China Ministry of EducationBiomedicine Key Laboratory of Shaanxi ProvinceLab of Tissue Engineeringthe College of Life SciencesFaculty of Life Science&MedicineNorthwest UniversityXi'an 710069China Fluorescence Research Group Singapore University of Technology and DesignSingapore 487372Singapore Baoji AIE Research Center Shaanxi Key Laboratory of PhytochemistryCollege of Chemistry and Chemical EngineeringBaoji University of Arts and SciencesBaoji721013China

Dual-state emission(DSE)molecules displayed conspicuous fluorescent performance both in solid and solution ***,the construction of DSE molecules and the regulation of their emission wavelengths remains a great *** on the structure-function relationship of quinolinonitrile-type fluorophores,this work proposed a feasible strategy for modulating their fluorescent properties into DSE via limiting the torsion angle between the quinoline ring and C=C bond in the range of 4.7°to 30°.Based on this strategy,53 compounds were obtained which displayed tunable emission wavelengths from^(3)97 nm to 740 nm in solid-state and from 360 nm to 672 nm in *** feasibility of the strategy was supported by a series of theoretical calculations,optical characterizations,and crystal analysis,suggesting the compounds have great potential in imaging living cells and tissues with desired wavelengths.

关键词： Fluorescence Dual-state emission Structure-function relationship Wavelength regulation Fluorescent imaging

Mirrorless MEMS imaging:a nonlinear vibrational approach utilizing aerosol-jetted PZT-actuated fiber MEMS scanner for microscale illumination

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Microsystems & Nanoengineering 2024年第1期10卷 175-192页

作者： Wei-Chih Wang Ming-Yao Li kuan-Chang Peng Yi-Feng Hsu Benjamin Estroff Pao-Yun Yen David Schipf Wen-Jong Wu Department of Power Mechanical Engineering National Tsing Hua UniversityNo.101Section 2Kuang-Fu RoadHsinchuTaiwan 30013China Institute of NanoEngineering and Microsystems National Tsing Hua UniversityNo.101Section 2Kuang-Fu RoadHsinchuTaiwan 30013China Department of Mechanical Engineering University of WashingtonSeattleWA 98195USA Department of Electrical Engineering University of WashingtonSeattleWA 98195USA Department of Engineering Science and Ocean Engineering National Taiwan UniversityTaiwanChina

This study introduces a novel image capture and lighting techniques using a cutting-edge hybrid MEMS scanner system designed for compact microscopic *** scanner comprises a tapered optical fiber waveguide and innovative aerosol-jet printed PZT(lead zirconate titanate)bimorph push-pull actuators on a stainless-steel substrate,effectively addressing issues that are commonly associated with PZT on silicon substrates such as fracture and layer *** leveraging nonlinear vibration,the scanner achieves a spiral scan pattern from a single signal input,in addition to the expected two-dimensional scanning and target illumination from two phase-shifted *** capability is further enhanced by a novel process to taper the optical fiber,which reduces illumination scattering and tunes the fiber to the resonant frequencies of the *** precisely tapered tip enables large fields of view while maintaining independent 2-axis scanning through one-degree-of-freedom *** validation showcases the successful generation of a spiral scan pattern with a 60μm diameter scan area and a 10 Hz frame rate,effectively reconstructing scanned images of 5μm lines,cross patterns(15μm in length with a 5μm gap),and structures of a Psychodidae wing.

关键词： steel fiber scanner

缺磷限制带状复合种植大豆光合作用对光照诱导的响应

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植物营养与肥料学报 2024年第3期30卷 505-514页

作者：李林宽张锡洲陈静叶代桦刘涛四川农业大学资源学院四川成都610000 绵阳市农业技术推广中心四川绵阳621000

[目的]磷参与电子传递、光合磷酸化和卡尔文循环等光合作用过程,缺磷会导致作物光合效率下降和产量损失。针对大豆[Glycinemax(L.)Merr.]和玉米(Zea mays L.)带状复合种植时低位作物大豆因波动光环境导致的产量受限问题,探究磷素营养对... 详细信息

[目的]磷参与电子传递、光合磷酸化和卡尔文循环等光合作用过程,缺磷会导致作物光合效率下降和产量损失。针对大豆[Glycinemax(L.)Merr.]和玉米(Zea mays L.)带状复合种植时低位作物大豆因波动光环境导致的产量受限问题,探究磷素营养对光照诱导过程中大豆光合作用的影响,为改善大豆光合效率和挖掘大豆生产潜力提供理论依据。[方法]大豆玉米带状复合种植田间试验在四川农业大学进行,设置大豆不施磷(-P)和正常施磷(CK)两个处理。于大豆分枝期,分别在稳态饱和光及光照诱导条件下,测定大豆叶片气体交换参数,包括净光合速率(A)、气孔导度(g_(s))、胞间CO^(2)浓度(C_(i))、蒸腾速率(T_(r))、电子传递速率(J)等,并计算气孔和生化等光合限制因子比例。气体交换参数测定完成后的叶片样品用于测定全磷、无机磷和叶绿素含量。[结果]与CK处理相比,-P处理显著抑制了大豆的生长,籽粒产量和成熟期植株干重分别降低了24.5%和23.9%。缺磷显著降低了分枝期大豆叶片的全磷和无机磷含量,但并未影响叶绿素a、叶绿素b以及类胡萝卜素等光合色素含量。稳态饱和光照下,缺磷导致大豆叶片的A和Tr分别下降了30.9%和39.5%,而对gs无显著影响,使得Ci显著增加;缺磷导致大豆叶片的气孔限制值下降了16.7%,即非气孔因素是引起稳态饱和光照下A下降的主导因素。由低光向高光过渡期间,施磷处理大豆叶片A和gs的诱导速率都显著快于不施磷处理;而J的诱导速率在两个处理之间无显著差异。光合限制分析结果显示,光照诱导过程中施磷处理累计气孔限制和生化限制之间并没有显著差异;而不施磷处理累计气孔限制达到65.7%,显著高于生化限制,这表明缺磷条件下气孔是限制其光合诱导速率的主要因素。[结论]缺磷主要限制了带状复合种植下大豆叶片气孔导度对光照诱导的响应,导致其光合效率和产量下降。因此,合理的磷肥施用对提高带状复合种植体系中大豆在波动光环境下的光合效率,减少产量损失具有重要意义。

关键词：大豆光合作用光照诱导光合限制缺磷胁迫

Synthesis and Crystal Structure of 1-(N,N-Di-(p-toluenesulfonyl))-amino-2-(N'-p-toluenesulfonyl)-amino-3,5-dinitrobenzene

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Chinese Journal of Structural Chemistry 2007年第3期26卷 309-313页

作者： CHEN hua-Mei LIN Hai LIN hua-kuan Department of Chemistry Nankai University Tianjin 300071 China State Key Laboratory of Functional Polymer Materials for Absorption and Separation Nankai University Tianjin 300071 China

The title compound, 1-（N,N-di-（p-toluenesulfonyl））-amino-2-（N＇-p-toluenesulfonyl）- amino-3,5-dinitrobenzene, was synthesized and structurally determined by single-crystal X-ray diffraction method. It crystallizes in orthorhombic, space group Pna21 with a = 13.723（2）, b = 25.354（4）, c = 8.6565（12） A, V= 3011.9（8） A^3, Z = 4, Mr = 660.68, F（000） = 1368, Dc = 1.457 g/cm^3, μ = 0.309, the final R = 0.0609 and wR = 0.1042. The H atom of N2-H group, which is the unique recognition site to anion, is enveloped by two oxygen atoms and one benzene from two and one p-toluenesulfonyl moieties, respectively.

关键词： sulfonylamide anion recognition receptor crystal structure

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不同功能型沉水植物对溶解氧影响及环境效应

水生生物学报 2024年第2期48卷 232-241页

作者：李华歆殷春雨杨国梁蔡颖黄晓龙李宽意关保华中国科学院南京地理与湖泊研究所湖泊与环境国家重点实验室南京210008 中国科学院大学北京100049 上海建桥学院有限责任公司上海201306 江苏省环境工程技术有限公司南京210019

研究选用刺苦草(Vallisneria spinulosa)、黑藻(Hydrilla verticillata)和穗花狐尾藻(Myriophyllum spicatum)分别代表底层型、冠层少根型和冠层多根型沉水植物,通过中宇宙实验,探索不同功能型沉水植物在生长过程中水柱和沉积物中溶解氧... 详细信息

研究选用刺苦草(Vallisneria spinulosa)、黑藻(Hydrilla verticillata)和穗花狐尾藻(Myriophyllum spicatum)分别代表底层型、冠层少根型和冠层多根型沉水植物,通过中宇宙实验,探索不同功能型沉水植物在生长过程中水柱和沉积物中溶解氧(DO)浓度及其相关指标的差异。实验结果表明:不同处理组水柱DO浓度存在显著差异,空白组水柱DO浓度显著低于植物处理组,且空白组水柱总氮(TN)和总磷(TP)浓度降低程度最少;黑藻组比叶面积、叶面积指数、净增长生物量、相对生长速率和水柱DO浓度最大,能够有效降低水柱TP和TN浓度;穗花狐尾藻组株高最高,提升水柱DO浓度显著高于刺苦草,水柱TP降低程度最大;刺苦草组比根长、单株总根长和根冠比最大,提升沉积物深度6 cm以内的DO效果最好,沉积物铁含量最高,沉积物总氮(TN)、总碳(TC)含量和间隙水总溶解性磷(TDP)浓度最低。在修复富营养湖泊过程中,可根据水和沉积物缺氧状况,合理配置底层型和冠层型沉水植物,构建释氧能力较强的群落,从沉积物表层到水柱上层均为湖泊提供充足的氧气,从而更加有利于清水态的形成。

关键词：功能型沉水植物溶解氧环境效应植冠根系

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航空发动机泵用控制器一体化滤波组件设计

航空发动机 2024年第4期50卷 135-141页

作者：边学良曹宽张振华贾雨庆西安航天精密机电研究所西安710100

针对航空发动机燃滑油泵用控制器电磁兼容性(EMC)试验项目CE102和RE102,根据设备的特点,从设计要求、滤波电路设计和结构设计几方面进行了一体化滤波组件的总体方案设计。通过采用工程经验以及公式计算滤波器参数的方法设计的一体化滤... 详细信息

针对航空发动机燃滑油泵用控制器电磁兼容性(EMC)试验项目CE102和RE102,根据设备的特点,从设计要求、滤波电路设计和结构设计几方面进行了一体化滤波组件的总体方案设计。通过采用工程经验以及公式计算滤波器参数的方法设计的一体化滤波组件并不能使设备一次性通过电磁兼容性的全部试验项目考核,根据实际工况进行试验摸底测试,对未通过的试验项目的超标点进行分析与定位后,确定其原因是由于电路设计中无Y电容去泄放共模干扰,计算选用的共模电感的电感量偏小所致。结果表明:通过采取增加共模电感量和输出线屏蔽的措施和在设备输入端加装一体化滤波组件,消除或减小了其在电源线和信号线上产生的传导干扰,使试验项目顺利通过。

关键词：电磁兼容性一体化滤波组件燃滑油泵控制器航空发动机

Applications of Extended Mapping Deformation Method in Two （3＋1）-Dimensional Nonlinear Models

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Communications in Theoretical Physics 2005年第5期43卷 775-780页

作者： huaNGWen-hua ZHANGJie-Fang GEWei-kuan CollegeofScience HuzhouUniversityHuzhou313000China／／ShanghaiInstituteofAppliedMathematicsandMechanicsShanghaiUniversityShanghai200072China ShanghaiInstituteofAppliedMathematicsandMechanics ShanghaiUniversityShanghai200072China／／InstituteofNonlinearPhysicsZhejiangNormalUniversityJinhua321004China CollegeofScience HuzhouUniversityHuzhou313000China

Based on the extended mapping deformation method and symbolic computation, many exact travelling wave solutions are found for the (3+1)-dimensional JM equation and the (3+1)-dimensional KP equation. The obtained solutions include solitary solution, periodic wave solution, rational travelling wave solution, and Jacobian and Weierstrass function solution, etc.

关键词： (3+1)-dimensional JM equation (3+1)-dimensional KP equation travelling wavesolution

Synthesis and Crystal Structure of N-(1′-H-Pyrrol-2′-ylcarbonyl)-5-amino-1,10-phenanthroline

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Chinese Journal of Structural Chemistry 2008年第2期27卷 163-166页

作者： WANG Yue-Hong LIN Hai LIN hua-kuan Department of Chemistry Nankai University Tianjin 300071 China Key Laboratory of Functional Polymer Materials of the Ministry of Education Nankai University Tianjin 300071 China

The title compound, N-（1′-H-pyrrol-2′-ylcarbonyl）-5-amino-1,10-phenanthroline, was synthesized by the reaction of a-pyrrolyl carbonyl chloride and 5-amino-1,10-phenanthroline in pyridine. Determined by X-ray structure analysis, it crystallizes in triclinic system, space group P1 with the following crystallographic data： C20H21N5O3, Mr = 379.42, a = 7.8559（4）, b = 9.1681（6）, c = 14.6818（9） A, α= 73.254（10）,β= 88.938（15）, γ= 68.080（10）°, V= 934.66（10） A3, Z = 2, F（000） = 400, Dc = 1.348 g/cm^3 and p = 0.094 mm-1. The final R = 0.0680 and wR = 0.1419 for 2142 observed reflections with I 〉 2σ（/）, and R = 0.1084 and wR = 0.1643 for all reflections. Two aromatic ring planes （pyrrole and phenanthroline rings） are connected by the amide plane. Two different types of intermolecular hydrogen bonds, O-H…N and N-H…O, exist in the crystal. The title complex molecules are connected through hydrogen bonds and weak π-π stacking interactions to generate a 3-D supramolecule.

关键词： 1,10-phenanthroline pyrrole amide crystal structure

玉米shrunken2突变体中醇溶蛋白合成相关基因的表达分析

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玉米科学 2024年第4期32卷 13-18,30页

作者：韩小花晋玉宽周波刘康廖勇范艳萍田雯王振华河南省农业科学院粮食作物研究所郑州450002 北京艾普希隆生物科技有限公司北京101500 漯河市农业科学院河南漯河462000 济宁市农业技术推广中心山东济宁272000

利用SDS-PAGE和荧光定量PCR,研究shrunken2(sh2)突变体子粒胚乳发育不同时期醇溶蛋白的积累以及醇溶蛋白合成相关基因的表达情况。结果表明,与郑58相比较,sh2中氨基酸组分变化与opaque2(o2)相似,赖氨酸含量升高,同时谷氨酸和亮氨酸含量... 详细信息

利用SDS-PAGE和荧光定量PCR,研究shrunken2(sh2)突变体子粒胚乳发育不同时期醇溶蛋白的积累以及醇溶蛋白合成相关基因的表达情况。结果表明,与郑58相比较,sh2中氨基酸组分变化与opaque2(o2)相似,赖氨酸含量升高,同时谷氨酸和亮氨酸含量下降。SDS-PAGE结果显示,胚乳发育不同时期sh2中醇溶蛋白的积累均明显低于郑58,而且sh2中19-kDaα-醇溶蛋白积累明显减少。荧光定量PCR结果表明,sh2突变体中对于Z1A、Z1B和Z1D家族基因的抑制较为显著。sh2突变体中prolamine-box binding factor(PBF)表达量升高,opaque2(o2)表达下降。因此,sh2突变体同时影响淀粉、氨基酸、贮藏蛋白等的代谢。

关键词：玉米醇溶蛋白近等基因系 shrunken2突变体