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High sensitivity dual polarization four channels surface plasmon resonance refractive index sensor with wide detection range and high linearity based on photonic crystal fiber

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Optoelectronics Letters 2025年

作者： CUI Nan PAN Honggang zhang Ailing ZHAO Zihong CHEN Zhipan zhang bo Tianjin Key Laboratory of Film Electronic and Communication Devices， Engineering Research Center of Optoelectronic Devices and Communication Technology， Ministry of Education， School of Integrated Circuit Science and Engineering， Tianjin University of Technology

In this paper， we propose and numerically characterize the optical characteristics of a high sensitivity dual polarization four channels surface plasmon resonance refractive index sensor with wide detection range and high linearity based on photonic crystal fiber （PCF）. Four light transmission channels are constructed by using big air holes. The small rectangular air hole in the center of the fiber core is used to add asymmetry. We use gold plasma material to achieve better sensing performance. A thin film of TiO2is placed on the PCF surface， which assists gold in the adhesion on PCF. The maximum wavelength sensitivity of the sensor can reach 20000 nm/RIU in both x and y polarization modes. While the maximum wavelength resolution of the sensor is 5×10-6RIU. The average wavelength sensitivity reached 15900nm/RIU and 15800nm/RIU in x and y polarization mode. The sensor features R2=0.9969 / R2=0.9966 high linear performance in x and y polarization mode and the maximum FOM values 509.13 RIU-1/ 489.63 RIU-1in x and y polarization mode. Besides the sensor’s detection range is 1.26-1.36， which is a wide refractive index detection range. The sensor has a wide range of applications in biomedical and other fields.

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股骨近端锁定钢板改良治疗老年骨质疏松性股骨顺转子间骨折的疗效分析

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转化医学电子杂志 2015年第1期2卷 89-90页

作者：张永胜张万波河南省遂平县中医院河南遂平463100

目的:对股骨近端锁定钢板改良治疗老年骨质疏松性股骨顺转子间骨折的疗效进行探讨.方法:选取我院收治的40例老年骨质疏松性股骨顺转子间骨折患者为研究对象,对所有患者实施股骨近端锁定钢板改良治疗,并观察和比较患者的预后.结果:手术... 详细信息

目的:对股骨近端锁定钢板改良治疗老年骨质疏松性股骨顺转子间骨折的疗效进行探讨.方法:选取我院收治的40例老年骨质疏松性股骨顺转子间骨折患者为研究对象,对所有患者实施股骨近端锁定钢板改良治疗,并观察和比较患者的预后.结果:手术时间平均为(40.2±3.2)min,平均出血量为(112.3±2.5)mL.随访显示患者无切口感染以及死亡例数,3个月内均骨性愈合,下肢负重恢复正常.术后5个月复查显示,1例患者颈干角轻度丢失,9例存在前倾角丢失.治疗后的Harris髋关节功能评分相比治疗前的分值更高,有统计学意义(P<0.05).结论:采用股骨近端锁定钢板改良对老年骨质疏松性股骨顺转子间骨折进行治疗疗效理想,安全可靠,值得普及和应用.

关键词：股骨近端锁定钢板老年疗效分析

Achieving ultralow leakage current in Schottky-MIS cascode anode lateral field-effect diode based on AlGaN/GaN HEMT

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Science China(Information Sciences) 2025年第1期68卷 379-385页

作者： Fangzhou wanG Changhong GAO Guojian DING Cheng YU Zhuocheng wanG Xiaohui wanG Qi FENG Ping YU Peng ZUO wanjun CHEN Yang wanG Haiqiang JIA Hong CHEN bo zhang Zeheng wanG Songshan Lake Materials Laboratory School of Microelectronics Southern University of Science and Technology State Key Laboratory of Electronic Thin Films and Integrated Devices University of Electronic Science and Technology of China Manufacturing Commonwealth Scientific and Industrial Research Organisation

In this paper,we design and fabricate a Schottky-metal-insulator-semiconductor（MIS） cascode anode GaN lateral field-effect diode（CA-LFED） to achieve ultralow reverse leakage current(ILEAK).The device based on AlGaN/GaN highelectron-mobility-transistor（HEMT） includes a normally-off MIS-controlled channel that is cascoded with a high barrier height Schottky *** reverse bias,the high electric-field is effectively prevented by the normally-off MIS-controlled channel *** with the high barrier height Schottky contact,this feature significantly suppresses the *** by the device fabrication,the CA-LFED with high breakdown voltage（BV）>600 V shows an ultralow ILEAKof 3.6×10-9A/mm as well as a low forward voltage drop（VF） of 2.2 *** performance suggests that the CA-LFED can be a promising candidate for ultralow ILEAKand better VF-ILEAKtrade-off GaN power diode applications.

关键词： Schottky-MIS cascode anode lateral field-effect diode (LFED) ultralow reverse leakage current ($I_{\rm{LEAK}}$) forward drop and reverse leakage trade-off AlGaN/GaN HEMTs

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苯丙乳液游离单体含量影响因素的研究

胶体与聚合物 2016年第4期34卷 161-163,181页

作者：张禹朱超冯波张婉容万凯艾照全有机功能分子合成与应用教育部重点实验室湖北大学化学化工学院武汉430062

本文研究了不同条件对苯丙乳液游离单体的影响,采用化学分析法测定乳液中游离单体含量。在乳液固含量为45%,反应3 h时,当反应温度为77℃,软硬单体比例为5∶3,pH缓冲剂碳酸氢钠含量0.3%,乳化剂十二烷基硫酸钠含量2.5%,选用氧化还原引发剂... 详细信息

本文研究了不同条件对苯丙乳液游离单体的影响,采用化学分析法测定乳液中游离单体含量。在乳液固含量为45%,反应3 h时,当反应温度为77℃,软硬单体比例为5∶3,pH缓冲剂碳酸氢钠含量0.3%,乳化剂十二烷基硫酸钠含量2.5%,选用氧化还原引发剂KPS/NaHSO_3,其含量为0.5%且比例6∶1时,可得到游离单体含量较低的苯丙乳液,从而为制备"绿色"环保水性涂料奠定基础。

关键词：苯丙乳液化学分析法游离单体含量

Maintaining moderate levels of hypochlorous acid promotes neural stem cell proliferation and differentiation in the recovery phase of stroke

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Neural Regeneration Research 2025年第3期20卷 845-857页

作者： Lin-Yan Huang Yi-De zhang Jie Chen Hai-Di Fan wan wang Bin wang Ju-Yun Ma Peng-Peng Li Hai-Wei Pu Xin-Yian Guo Jian-Gang Shen Su-Hua Qi School of Medical Technology Xuzhou Key Laboratory of Laboratory DiagnosticsXuzhou Medical UniversityXuzhouJiangsu ProvinceChina School of Pharmacy Xuzhou Medical UniversityXuzhouJiangsu ProvinceChina Department of Laboratory Medicine Branch Hospital of Huai’an First People’s HospitalHuai’anJiangsu ProvinceChina Department of Laboratory Medicine the Affiliated Hospital of Xuzhou Medical UniversityXuzhouJiangsu ProvinceChina School of Chinese Medicine The University of Hong KongHong Kong Special Administrative RegionChina

It has been shown clinically that continuous removal of ischemia/reperfusion-induced reactive oxygen species is not conducive to the recovery of late ***,previous studies have shown that excessive increases in hypochlorous acid after stroke can cause severe damage to brain *** previous studies have found that a small amount of hypochlorous acid still exists in the later stage of stroke,but its specific role and mechanism are currently *** simulate stroke in vivo,a middle cerebral artery occlusion rat model was established,with an oxygen-glucose deprivation/reoxygenation model established in vitro to mimic *** found that in the early stage(within 24 hours)of ischemic stroke,neutrophils produced a large amount of hypochlorous acid,while in the recovery phase(10 days after stroke),microglia were activated and produced a small amount of hypochlorous ***,in acute stroke in rats,hypochlorous acid production was prevented using a hypochlorous acid scavenger,taurine,or myeloperoxidase inhibitor,4-aminobenzoic acid *** results showed that high levels of hypochlorous acid(200μM)induced neuronal apoptosis after oxygen/glucose deprivation/***,in the recovery phase of the middle cerebral artery occlusion model,a moderate level of hypochlorous acid promoted the proliferation and differentiation of neural stem cells into neurons and *** suggests that hypochlorous acid plays different roles at different phases of cerebral ischemia/reperfusion *** levels of hypochlorous acid(5 and 100μM)promoted nuclear translocation ofβ-*** transfection of single-site mutation plasmids,we found that hypochlorous acid induced chlorination of theβ-catenin tyrosine 30 residue,which promoted nuclear ***,our study indicates that maintaining low levels of hypochlorous acid plays a key role in the recovery of neurological function.

关键词： cell differentiation cerebral ischemia/reperfusion injury chlorination hypochlorous acid microglia neural stem cell neurogenesis nuclear translocation stroke β-catenin

Synthesis of chiral phosphine derivatives through a copper（I）-catalyzed desymmetric SNAr reaction

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Science China Chemistry 2025年

作者： Shuai zhang Pei-Zhi Liu Yan-bo Li Qi zhang Jun-Zhao Xiao Yi-Fan wang Tian-Yu Wei Jia-Wei Jiang Ye wang Qian Peng Liang Yin Key Laboratory of Fluorine and Nitrogen Chemistry and Advanced Materials Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences Chinese Academy of Sciences State Key Laboratory of Elemento-Organic Chemistry and Tianjin Key Laboratory of Biosensing and Molecular Recognition College of Chemistry Frontiers Science Center for New Organic Matter Nankai University Haihe Laboratory of Sustainable Chemical Transformations

Axially chiral phosphines are a class of extremely important ligands in asymmetric catalysis. Herein, an unprecedented copper（I）-catalyzed asymmetric SNAr reaction with HP（S）R2is uncovered, which delivers a series of axially chiral phosphine derivatives in high yields with excellent enantioselectivity. Furthermore, the diastereoselective reaction with the kinetic resolution of racemic HP（S）ArR proceeds smoothly, providing the products with moderate diastereoselectivity and excellent enantioselectivity. Control experiments indicate that HP（S）Ph2is much more active than HPPh2and HP（O）Ph2as the pronucleophile in the present reaction. It is found that the SNAr reaction （the first SNAr） proceeds in a desymmetric manner, providing the desired chiral products while a continued SNAr reaction （the second SNAr） slightly occurs in a kinetic resolution manner in the present catalytic system, which enhances the ee of the desired chiral products. DFTcalculations support a concerted reaction pathway rather than a step-wise mechanism. Finally, axially chiral olefin-phosphines produced by the present method work as suitable ligands in Pdcatalyzed asymmetric allylic substitution with C-, N-, and O-nucleophiles and Rh-catalyzed asymmetric addition of arylboronic acid to benzil.

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Sensitivity improvement by Vernier effect in microwave photonic filter based on F-P fiber ring

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Optoelectronics Letters 2025年

作者： LIN Rui zhang Ailing CHANG Pengxiang PAN Honggang wanG Minghe wanG bo Engineering Research Center of Optoelectronic Devices & Communication Technology， Ministry of Education， Tianjin Key Laboratory of Film Electronic and Communication Devices， School of Electrical and Electronic Engineering， Tianjin University of Technology

A high sensitivity fiber optic temperature sensor based on Vernier effect in microwave photonic filter based on two paralleled F-P (Fabry-Perot) fiber ring is proposed and experimentally verified. Sensitivity is improved through the Vernier effect， which is caused by two parallel F-P fiber rings with approximate lengths. Temperature interrogation is achieved by monitoring the notch frequency of the superimposed frequency response curve. The temperature sensitivity of -484.514kHz/℃ is achieved in experiment， which is 57 times of the sensor without Vernier effect. The improved sensitivity and simple structure make it have wide potential applications in temperature monitoring of power systems.

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A versatile synthetic strategy towards rare earth based metal-organic frameworks

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Science China Chemistry 2025年

作者： Quan Shi Yun-Hao Xu Ming-Hui Chen Peng Zhao Wen-bo Deng Ji Xiong Kai Guo Ya-Qing Feng Bao zhang School of Chemical Engineering and Technology Tianjin University Tianjin Collaborative Innovation Center of Chemical Science and Engineering Guangdong Laboratory Chemistry & Fine Chemical Industry Jieyang Center

Rare earth metal-organic frameworks (RE-MOFs) have drawn wide attention owing to diverse network structures and various application ***,due to the unpredictable formation of the nodes,it is still challenging to design novel RE-MOFs.A novel versatile strategy was developed employing a RE-acetate complex (RE2(CH3COO)6·4H2O) as a precursor to construct RE-MOFs.2D RE-MOFs (RE-DBP) and 3D RE-MOFs (RE-TCPP) could be obtained by using dicarboxylic porphyrin ligands H2DBP and tetracarboxylic porphyrin ligands H2TCPP,*** RE-MOFs were further synthesized to verify the universality of the *** crystalline RE-MOFs could also be prepared at room temperature via the developed strategy,which could significantly promote large-scale preparation and practical application of *** proof of the concept,the performance of porphyrin-based RE-MOFs was investigated in the photocatalytic cycloaddition of CO2with *** the RE-DBP(Co) MOFs,Tb-DBP(Co) exhibited the best photocatalytic performance,which was also greater than that of the corresponding 3D MOF Tb-TCPP(Co) due to the optimal 2D structure and thus the accelerated photogenerated charge separation and transfer *** work not only provides a novel versatile strategy to design and develop RE-MOFs,but also proposes a promising approach for the potential bulk production of RE-MOFs at room temperature.

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Wnt抑制信号DKK-1在激素性股骨头坏死中的作用研究进展

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内蒙古医科大学学报 2016年第4期38卷 366-369页

作者：张博伦刘万林内蒙古医科大学内蒙古呼和浩特010059 内蒙古医科大学第二附属医院

Wnt/连环蛋白信号在骨的发展和骨代谢的平衡,许多骨骼疾病与其失调有关。有研究表明,Wnt拮抗信号Dickkopf-1(DKK-1)引起的骨代谢变化对激素性股骨头坏死(steroid-induced Avascular Necrosis of Femoral Head,SANFH)的发生和发展起着非... 详细信息

Wnt/连环蛋白信号在骨的发展和骨代谢的平衡,许多骨骼疾病与其失调有关。有研究表明,Wnt拮抗信号Dickkopf-1(DKK-1)引起的骨代谢变化对激素性股骨头坏死(steroid-induced Avascular Necrosis of Femoral Head,SANFH)的发生和发展起着非常重要的作用。糖皮质激素(GCs)能通过拮抗Wnt信号(Wnts)影响骨形成和成骨细胞的功能,使得Dkk-1的表达显著增加。因此,我们回顾了近几年关于DKK-1在SANFH中作用的相关文献,旨在阐明DKK-1对Wnt信号通路的调控及其在SANFH发病机制中的作用做一综述。

关键词： DKK-1 wnt信号 SANFH 成骨细胞骨细胞