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Microporous Organic Nanotube Networks from Hyper Cross-linking Core-shell Bottlebrush Copolymers for Selective Adsorption Study

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Chinese Journal of Polymer Science 2018年第1期36卷 98-105页

作者： Tian-Qi Wang Yang Xu Zi-Dong He ming-hong zhou Kun Huang School of Chemistry and Molecular Engineering East China Normal University

We report a synthesis of microporous organic nanotube networks（MONNs） by a combination of hyper cross-linking and molecular templating of core-shell bottlebrush copolymers. The intrabrush and interbrush cross-linking of polystyrene（PS） shell layer in the core-shell bottlebrush copolymers led to the formation of micropores and large-sized nanopores（meso/macrospores） in MONNs, respectively, while selective removal of polylactide（PLA） core layer generated mesoporous tubular structure. The size of PLA-templated mesoporous cores and porous structure both at micro-and meso-scale could be controlled by simple tuning of the ratio of core/shell or the PLA core fraction in the bottlebrush precursors. Moreover, the resultant MONNs showed a highly selective adsorption capacity for the positively charged dyes on the basis of multi-porosity and carboxylate group-rich structure. In addition, MONNs also exhibited effective performance in size-selective adsorption of biomacromolecules. This work represents a new avenue for the preparation of MONNs and also provides a new application for molecular bottlebrushes in nanotechnology.

关键词： Microporous organic nanotube networks Hyper cross-linking Core-shell bottlebrush copolymers Meso/Macrospores Selective adsorption capacity

Electrochemical performance of Al_2O_3 pre-coated spinel LiMn_2O_4

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Rare Metals 2019年第2期38卷 128-135页

作者： hong-ming zhou Yu-Hua Zhu Jian Li Wen-Jiao Sun Zhong-Zhong Liu School of Materials Science and Engineering Central South University Hunan Zhengyuan Institute for Energy Storage Materials and Devices

Al_2O_3-coated spinel LiMn_2O_4 cathode materials, presintered LiMn_2O_4(P-LMO), and calcined LiMn_2O_4(C-LMO) were synthesized by chemical deposition and thermal treating method using presintered and calcined LiMn_2O_4 as precursors. The crystal structure, morphology,the thickness of the coating layer, and particle size of prepared samples were investigated by X-ray diffraction(XRD), scanning electron microscopy(SEM), high-resolution transmission electron microscopy(HRTEM), and Malvern instruments. The average particle size of P-LMO with like-spheres(0.3 μm) is much smaller than that of C-LMO(0.5 μm). The Al_2O_3 layer of P-LMO can effectively reduce the charge transfer resistance and inhibit the Mn dissolution. The electrochemical performance of P-LMO is better than that of C-LMO. It is found that the LiMn_2O_4 cathode materials have excellent electrochemical cyclability by coated 2 mol% Al_2O_3 at the surface of presintered material. The initial discharge capacity of the material with 2 mol% Al_2O_3-coated is 114.0 m Ah·g^(-1) at 0.1 C rate and 55 ℃, and the capacity retention is 87.3 % at 0.5 C rate.

关键词： Cathode materials Lithium manganese oxide Pre-coated Aluminum oxide Cycling stability

Anode material NbO for Li-ion battery and its electrochemical properties

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Rare Metals 2018年第2期37卷 118-122页

作者： Jian Li Wen-Wen Liu hong-ming zhou Zhong-Zhong Liu Bao-Rong Chen Wen-Jiao Sun School of Materials Science and Engineering Central South UniversityChangsha 410083China Hunan Zhengyuan Institute for Energy Storage Materials and Devices Changsha 410083China

The NbO electrode materials were successfully synthesized by high-temperature solid-phase method using Nb powders and Nb2O5 powders as raw materials. The crystalline structure, morphology, and electrochemical properties of the obtained materials were characterized by X-ray diffi＇action （XRD）, scanning electron microscopy （SEM）, dynamic light scattering instrument （DLSA）, half- cell charge-discharge tests, and cyclic voltammetry （CV）. The reaction mechanism of lithium with NbO was inves- tigated by ex-situ XRD studies. The results show that material average Li storage voltage is nearly located at 1.6 V, and the lithium intercalation into NbO remains a single-phase process. For the first discharge, a capacity of 355 mAh·g^-1 is obtained at a current rate of 0.1C, and 293 mAh·g^-1is maintained after 50 cycles, whereas a capacity of 416 mAh·g^-1 is obtained at a current rate of 0.1C alter ball milling. And 380 mAh·g^-1 reversible capacity remains for the ball milling sample.

关键词： Niobium oxide Anode Electrochemicalproperties Lithium-ion batteries

Effect of Tongmai Decoction on expression of NF-κB in ox-LDL injured endothelial cells

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Journal of Central South University of Technology 2005年第z1期12卷 322-325页

作者： XIAO Chang-jiang SUN ming zhou hong-yan LIU Sui-xin LONG Kai-chao HE Fei LI Tong Department of Cardiology Xiangya Hospital Central South University Changsha 410008 China Department of Cardiology Xiangya Hospital Central South University Changsha 410008 China Department of Cardiology Xiangya Hospital Central South University Changsha 410008 China Department of Cardiology Xiangya Hospital Central South University Changsha 410008 China Department of Cardiology Xiangya Hospital Central South University Changsha 410008 China Department of Cardiology Xiangya Hospital Central South University Changsha 410008 China Department of Cardiology Xiangya Hospital Central South University Changsha 410008 China

Objective Study on the effect of NF-κB in ox-LDL injured HUVEC-304 and the intervention with the serum of Tongmai Decoction. Methods Tongmai Decoction herbage-contained serum was made by the serum pharmacology methods, then the HUVEC-304 cells were divided into 5 groups and incubated for 24 h: 1) normal group;2) fetal calf serum group; 3) ox-LDL group; 4) simvastatin group; 5) Tongmai Decoction group. RT-PCR was used to determine the mRNA of NF-κB in the cells, Western Blot Assay was used to determine the protein content of NF-κB in the cells. Results 1) Compared with the cells in normal group and serum control group , the endothelial cells in ox-LDL group are seriously injured, while those in Tongmai Decoction group grow better; 2) Compared with the cells in normal group and fetal calf serum group, the expressions of NF-κB gene and protein are up-regulated in ox-LDL group(P＜0.05, P＜0.01); 3) Compared with the cells in ox-LDL group, the expression of NF-κB gene and protein in Tongmai Decoction group are significantly down-regulated, there is no difference between Tongmai Decoction group and simvastatin group(P＞0.05). Conclusion Tongmai Decoction can protect the injured endothelial cells, up-regulate the expressions of NF-κB gene and protein content.

关键词： tongmai decoction ox-LDL endothelial cell nuclear factor-kappa B

Role of mitochondrial dysfunction in hydrogen peroxide-induced apoptosis of intestinal epithelial cells

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World Journal of Gastroenterology 2003年第3期9卷 562-567页

作者： Jian-ming Li hong zhou Qian Cai Guang-Xia Xiao Institute of Burn Research,Southwest Hospital,Third Military Medical University,Chongqing 400038,China Institute of Burn Research Southwest Hospital Third Military Medical University Chongqing 400038 China.

AIM: To study the role of mitochondrial dysfunction in hydrogen peroxide-induced apoptosis of intestinal epithelial ***: Hydrogen peroxide-induced apoptosis of human intestinal epithelial cell line SW-480 was established. Cell apoptosis was determined by Annexin-V and PI doublestained flow cytometry and DNA gel *** changes were examined with light and electron microscopy. For other observations, mitochondrial function,cytochrome c release, mitochondrial translocation and membrane potential were determined ***: Percentage of apoptotic cells induced with 400μ mol/L hydrogen peroxide increased significantly at I h or 3h after stimulation and recovered rapidly. Meanwhile percentage of apoptotic cells induced with 4 mmol/L hydrogen peroxide increased with time. In accordance with these changes, we observed decreased mitochondrial function in 400 μmol/L H2O2-stimualted cells at 1 h or 3 h and in 4 mmol/L H2O2-stimualted cells at times ***, swelling cristae and vacuole-like mitochondria were noted. Release of cytochrome c,decreased mitochondrial membrane potential and mitochondrial translocation were also found to be the early signs of ***: Dysfunctional mitochondria play a role in the apoptosis of SW-480 cell line induced by hydrogen peroxide.

关键词：肠上皮细胞细胞凋亡线粒体过氧化氢免疫组织化学

Role of β-catenin in hepatocarcinogenesis of rats

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Hepatobiliary & Pancreatic Diseases International 2006年第1期5卷 85-89页

作者： Qi-ming Wang, Kai-ming Yang, hong-Ying zhou, Zhen-Hai Yu, Xiao Li and Hui-Jun Yang Department of Human Anatomy, Huaxi Medical Centre of Sichuan University and Department of Radiology, West China Hospital of Sichuan University Chengdu 610041, China Department of Human Anatomy Huaxi Medical Centre of Sichuan University Chengdu 610041 China. wangqiming-6@***

BACKGROUND: β-catenin has two distinct roles in E-cadherin mediated cell adhesion and carcinogenesis by activating the wnt/β-catenin signaling pathway. One occurs at the cell-adhesion site, where cadherins are linked to the actin-based cytoskeleton. The other takes place in the cytoplasm and nuclei and is thought to regulate cell transformation. We studied the role of β-catenin in hepatocarcinogenesis of rats. METHODS: Fresh liver specimens were obtained from normal rats. and atypical hyperplasia livers and hepatocarcinoma tissues from model rats. The changes of β-catenin in gene expression levels were detected by reverse transcriptase polymerase chain reaction (RT-PCR) in the different specimens separately. At the same time, their localization was observed immunohistochemically. RESULTS: In the normal liver specimens, β-catenin staining was seen in the cell membrane. In liver specimens of atypical byperplasia, β-catenin staining occurred in the cell cytoplasm of some cells as well as in the cell membrane of others. Immunohistochemically cancerous tissues showed the presence of β-catenin in the cytoplasm and nuclei. RTPCR revealed that the gene expression levels of β-catenin were same in all samples. CONCLUSIONS: The accumulation of β-catenin in the cytoplasm and/or nuclei frequently occurs in hepatocarcinogenesis of rats. It may be an early event in the development of hepatocarcinoma of rats.

关键词： wnt signal β-catenin hepatocarcinogenesis

Gait Analysis in Primary Total Knee Arthroplasty with and without Patellar Resurfacing:A Randomized Control Study

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Journal of Shanghai Jiaotong university(Science) 2010年第5期15卷 632-636页

作者：徐义明白跃宏周俊黎庆钿梁娟 Rehabilitation Medicine Department the Sixth People's Hospital Affiliated to Shanghai Jiaotong University

It is still controversial whether or not to resurface patella during primary total knee arthroplasty (TKA).One of the reasons may be insensitive measurement *** conducted a randomized controlled study to compare kinematic and kinetic parameters of resurfacing and nonresurfacing patella with the Vicon gait analysis *** results show that patient post-operative gait of the two groups improved compared to pre-operative *** of gait parameters,knee flexion at heel-strike,double limb support time and maximum adduction angle appeared to be statistically difference in 3 months,but 12 months later,the gait parameters of the two groups had no significant ***,it seems that the final function of knee after TKA is not related whether or not to resurface patella.

关键词： total knee arthroplasty (TKA) patellar resurfacing kinematics and kinetics Vicon gait analysis system

Tailoring Light–Matter Interactions in Overcoupled Resonator for Biomolecule Recognition and Detection

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Nano-Micro Letters 2025年第1期17卷 262-280页

作者： Dongxiao Li hong zhou Zhihao Ren Cheng Xu Chengkuo Lee Department of Electrical and Computer Engineering National University of SingaporeSingapore 117583Singapore Center for Intelligent Sensors and MEMS(CISM) National University of SingaporeSingapore 117608Singapore

Plasmonic nanoantennas provide unique opportunities for precise control of light–matter coupling in surface-enhanced infrared absorption(SEIRA)spectroscopy,but most of the resonant systems realized so far suffer from the obstacles of low sensitivity,narrow bandwidth,and asymmetric Fano resonance ***,we demonstrated an overcoupled resonator with a high plasmon-molecule coupling coefficient(μ)(OC-Hμresonator)by precisely controlling the radiation loss channel,the resonator-oscillator coupling channel,and the frequency detuning *** observed a strong dependence of the sensing performance on the coupling state,and demonstrated that OC-Hμresonator has excellent sensing properties of ultra-sensitive(7.25%nm^(−1)),ultra-broadband(3–10μm),and immune asymmetric Fano *** characteristics represent a breakthrough in SEIRA technology and lay the foundation for specific recognition of biomolecules,trace detection,and protein secondary structure analysis using a single array(array size is 100×100μm^(2)).In addition,with the assistance of machine learning,mixture classification,concentration prediction and spectral reconstruction were achieved with the highest accuracy of 100%.Finally,we demonstrated the potential of OC-Hμresonator for SARS-CoV-2 *** findings will promote the wider application of SEIRA technology,while providing new ideas for other enhanced spectroscopy technologies,quantum photonics and studying light–matter interactions.

关键词： Plasmonic nanoantennas Light-matter interaction Surface-enhanced infrared absorption Overcoupled Biosensing

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犬冠状动脉狭窄与心肌需氧代谢的关系

生理学报 1989年第3期41卷 272-277页

作者：陈士良臧益民朱妙章骆秉铨刘德民梁宏第四军医大学生理学教研室徐州市医学科学研究所

本文在实验性开胸犬上,用一个微米缩窄器定量造成冠脉左旋支三种狭窄程度,并测量了血液动力学、血气和冠状窦pH、乳酸值。冠脉轻度狭窄时,左旋支每分血流量(CBF)未下降;而乳酸值增加。临界狭窄时,CBF轻度下降,心肌耗氧量(MVO_2)随之下... 详细信息

本文在实验性开胸犬上,用一个微米缩窄器定量造成冠脉左旋支三种狭窄程度,并测量了血液动力学、血气和冠状窦pH、乳酸值。冠脉轻度狭窄时,左旋支每分血流量(CBF)未下降;而乳酸值增加。临界狭窄时,CBF轻度下降,心肌耗氧量(MVO_2)随之下降而乳酸值增加。重度狭窄时,CBF、MVO_2、心肌供氧/耗氧比值和冠状窦pH值均下降;而氧提取率和乳酸值增加。冠脉狭窄大于75％后,狭窄程度与心肌供氧有明显相关(r=-0.92);而与心肌耗氧呈弱相关(r=-0.58)。

关键词：心肌代谢冠状动脉狭窄心肌耗氧量