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A Novel Hydrothermal Synthesis of Single Crystalline PbS Nanorods and Their Characterization

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Journal of Materials Science & Technology 2005年第5期21卷 609-612页

作者： hongliang zhu Deren YANG Hui ZHANG center of Materials Engineering Zhejiang Sci-Tech University Hangzhou 310018 China State Key Lab of Silicon Materials Zhejiang University Hangzhou 310027 China

Lead sulfide （PbS） nanorods with a high aspect ratio were prepared by a novel thioglycolic acid assisted hydrothermal method. X-ray diffraction and transmission electron microscopy revealed that the product was rod-like PbS with cubic rock-salt structure. Further characterizations by selected area electron diffraction and high-resolution transmission electron microscopy showed that the PbS nanorods were single crystalline in nature. Furthermore, the mechanism and critical factors for the hydrothermal synthesis of the nanorods have been discussed.

关键词： Lead sulfide Nanostructures Hydrothermal method

A versatile 3D-printable hydrogel for antichondrosarcoma,antibacterial,and tissue repair

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Journal of Materials Science & Technology 2023年第5期136卷 200-211页

作者： Wenxiang zhu Zheng Zhou Yuting Huang Hairong Liu Ning He Xiaolong zhu Xiaoxiao Han Dengming Zhou Xuanchu Duan Xin Chen Yahui He Xiaolin Meng Shuai zhu College of Materials Science and Engineering Hunan UniversityChangsha 410082China College of Biology Hunan UniversityChangsha 410082China State Key Laboratory of Advanced Design and Manufacture for Vehicle Body Hunan UniversityChangsha 410082China Department of Ophthalmology The Second Xiangya HospitalCentral South UniversityChangsha 410011China Aier Glaucoma Institute Changsha 410000China Aier School of Ophthalmology Central South UniversityChangsha 410000China Changsha Aier Eye Hospital Aier Eye Hospital GroupChangsha 410000China

Following operative treatment of chondrosarcoma,post-surgery tissue reconstruction may be confronted with daunting challenges,including the delayed self-repair of defective tissue,tumor recurrence,and bac-terial *** overcome these challenges,a methacrylic anhydride(MA)modified sericin(SerMA)solution mixed with procyanidins(PC)loaded polydopamine(PDA)modified ZIF-8(PC@ZIF-8@PDA)nanoparticles to form a multifunctional PC@ZIF-8@PDA/SerMA hydrogel after exposure under blue *** products with pre-designed shapes were printed out by using the SerMA solution carrying PC@ZIF-8@PDA nanoparticles and chondrocytes,indicating that PC@ZIF-8@PDA/SerMA hydrogels with personalized shapes can be fabricated via 3D *** PC@ZIF-8@PDA/SerMA hydrogel is able to kill chondrosarcoma cells and bacteria,like Staphylococcus aureus(***),and Escherichia coli(***),by its photothermal activity combined with near-infrared radiation(NIR).The PC@ZIF-8@PDA/SerMA hydrogel exhibited an antioxidative activity and a good biocompatibility and was easily monitored by its florescent and photoacoustic *** articular cartilage defects were efficiently repaired by PC@ZIF-8@PDA/SerMA hydrogels with encapsulated corresponding autologous chondrocytes,and mice skin burning wounds were swiftly regenerated by applying this ***,the PC@ZIF-8@PDA/SerMA hydrogel can be potentially applied to the clinic treatment of chondrosarcoma and tissue defect repair after chondrosarcoma resection due to its multifunction in the future.

关键词： Hydrogel Sericin ZIF-8 Chondrosarcoma Cartilage repair

PI-type Iterative Learning Control for Nonlinear Electro-hydraulic Servo Vibrating System

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Chinese Journal of Mechanical Engineering 2009年第3期22卷 451-455页

作者： LUO Xiaohui zhu Yuquan HU Junhua School of Mechanical Science and Engineering Huazhong University of Science and Technology Wuhan 430074 China

For the electro-hydraulic servo vibrating system（ESVS） with the characteristics of non-linearity and repeating motion, a novel method, PI-type iterative learning control（ILC）, is proposed on the basis of traditional PID control. By using memory ability of computer, the method keeps last time＇s tracking error of the system and then applies the error information to the next time＇s control process. At the same time, a forgetting factor and a D-type learning law of feedforward fuzzy-inferring referenced displacement error under the optimal objective are employed to enhance the systemic robustness and tracking accuracy. The results of simulation and test reveal that the algorithm has a trait of high repeating precision, and could restrain the influence of nonlinear factors like leaking, external disturbance, aerated oil, etc. Compared with traditional PID control, it could better meet the requirement of nonlinear electro -hydraulic servo vibrating system.

关键词： electro-hydraulic vibrating system PI iterative learning forgetting factor fuzzy inference

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高光谱早稻生理指标可跨期预测性的初步研究

光谱学与光谱分析 2022年第1期42卷 170-175页

作者：祝海竣付虹雨王学华崔国贤石爱龙薛卫纯湖南农业大学农学院湖南长沙410128 湖南农业大学苎麻研究所湖南长沙410128 益阳市赫山区农业农村局湖南益阳413000

叶绿素含量和叶片氮含量是作物生长状况的重要指标,对其实时精准的监测有助于田间生产管理以及作物品质产量的提高。当前,高光谱技术和经验回归方法被广泛应用于构建作物生化参数预测模型。但是,有关同一生命活动周期内,作物跨期预测叶... 详细信息

叶绿素含量和叶片氮含量是作物生长状况的重要指标,对其实时精准的监测有助于田间生产管理以及作物品质产量的提高。当前,高光谱技术和经验回归方法被广泛应用于构建作物生化参数预测模型。但是,有关同一生命活动周期内,作物跨期预测叶片生化参数的研究还存在空白。以超级早稻为研究对象,分别获取了蘖盛期、孕穗期、齐穗期、灌浆期和成熟期5个时期120组叶片高光谱数据、叶绿素以及叶片氮含量(LNC),采用python 3.6编程,scikit-learn(0.22.1)用来构建模型和验证评估,通过网格搜索(GridSearch)和五折交叉验证(5-flod cross validation)在训练集中确定偏最小二乘回归(PLSR)、随机森林(RF)、支持向量回归(SVR)3种不同算法的最佳模型参数,结合数据的跨期处理,分别建立针对不同生育期的水稻叶片氮含量跨期预测模型和叶绿素跨期预测模型。此外,评估跨期预测模型与传统非跨期预测模型,独立数据对模型进行检验。结果表明,(1)基于高光谱的早稻叶绿素、氮素的非跨期预测模型中,PLSR模型预测效果最佳,分别为叶绿素(R^(2)=0.84,RMSE=1.85)、氮素(R^(2)=0.85,RMSE=0.11)。(2)基于SVR的早稻叶绿素跨期预测模型预测效果最佳,分别为跨分蘖期(R^(2)=0.54)、跨孕穗期(R^(2)=0.36)、跨齐穗期(R^(2)=0.30)、跨灌浆期(R^(2)=0.55)、跨成熟期(R^(2)=0.74)。该结果为利用高光谱数据构建超级稻叶绿素含量预测模型提供新的理论参考,为水稻叶绿素含量的动态监测提供了模型依据。(3)早稻叶片氮含量跨期预测模型的拟合度很差,叶片氮含量预测具有不可跨期性。与非跨期预测模型相比,跨期预测模型虽然精度有所下降,但能有效克服经验模型普适性差的缺陷,有利于在同一生命活动周期内,实现作物不同生育期的生理指标预测,对实际生产管理具有重要意义。研究发现,作物生理指标存在可跨期预测性,这一概念为作物表型、作物内部品质以及产量的预测研究提供了新的思路。

关键词：高光谱早稻氮含量预测叶绿素可跨期性

Immunohistochemical　study　of　gastrin　in　colorectal　carcinoma　tissues　and　its　adjacent　mucosa

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World Journal of Gastroenterology 1997年第2期3卷 27-29页

作者： JIANG Chun Ping, CHEN Yu Quan, zhu Jian Wei, SHEN hong Xun and YU Xiu

AIM To study the expression of gastrin in colorectal carcinoma tissues and its adjacent mucosa and discuss the action of gastrin on colorectal carcinoma. METHODS The gastrin expression in colorectal carcinoma tissues and its adjacent mucosa of 58 cases was examined by using immunohistochemical and immunoelectron microscopic technique. RESULTS Of the transitional mucosa (TM) of co_ lorectal carcinoma, nontypical dysplasia mucosa and carcinoma tissue, the positive rate of gastrin is 35 1%, 48 3% and 60 3% respectively, with an increasing trend ( P <0 05). The granules of protein A gold (PAG) of immunoelectron microscopy may be seen in different electro density secreting granules in carcinoma cells and intercellular spaces or on the surface of membrane microvillus. CONCLUSION The existence of gastrin in colorectal carcinoma tissue and its adjacent mucosa, and the carcinoma cells forming gastrin granules to release the gastrin may be one of the initial factors in occurrence and development of the carcinoma. Positive expression of gastrin in colorectal carcinoma tissues serves as a marker indicating a good differentiation.

关键词： colorectal neoplasms gastrin immunohistochemistry microscopy, electron

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陕西中医 2025年第1期46卷 38-41页

作者：钱雅婷周雪朱轶庆南京市妇幼保健院产科江苏南京210000

目的:探讨丹益活血汤对产科抗磷脂综合征相关复发性流产(OAPS-RSA)患者血清黏蛋白域分子3(Tim-3)、半乳糖凝集素9(Gal-9)、晚期糖基化终末产物受体(RAGE)水平的影响。方法:选取128例OAPS-RSA患者,随机分为两组,对照组给予小剂量阿司匹林... 详细信息

目的:探讨丹益活血汤对产科抗磷脂综合征相关复发性流产(OAPS-RSA)患者血清黏蛋白域分子3(Tim-3)、半乳糖凝集素9(Gal-9)、晚期糖基化终末产物受体(RAGE)水平的影响。方法:选取128例OAPS-RSA患者,随机分为两组,对照组给予小剂量阿司匹林(LDA)联合低分子量肝素(LMWH)治疗,试验组加服丹益活血汤治疗,每组64例。比较两组疗效、治疗前后的子宫内膜容受性(ER)、血栓前状态(PTS)、血清Tim-3、Gal-9、RAGE水平及妊娠结局。结果:试验组总有效率更高(90.63%与76.56%)(P<0.05)。治疗后,与对照组比较,试验组EMT、Tim-3、Gal-9、RAGE均显著升高(P<0.05),PI、RI、FDP、D-D均显著降低(P<0.05)。试验组活产率高于对照组(P<0.05)。结论:丹益活血汤能够提升OAPS-RSA患者疗效,改善ER和PTS,升高血清Tim-3、Gal-9、RAGE水平,改善妊娠结局。

关键词：子宫内膜容受性复发性流产丹益活血汤产科抗磷脂综合征黏蛋白域分子3 半乳糖凝集素9

一种热量补偿结构在多晶硅定向凝固设备中的应用研究

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人工晶体学报 2014年第7期43卷 1626-1634页

作者：朱徐立洪永强厦门大学机电系厦门361005

定向凝固(DS)是冶金法提纯太阳能级多晶硅的重要工艺环节。以保证垂直的晶体生长方向,维持良好的固液相界面形态为目的,设计了一种带有热量补偿结构的多晶硅定向凝固设备,用以替代常规设备的侧壁加热装置,在满足工艺要求的同时达到节能... 详细信息

定向凝固(DS)是冶金法提纯太阳能级多晶硅的重要工艺环节。以保证垂直的晶体生长方向,维持良好的固液相界面形态为目的,设计了一种带有热量补偿结构的多晶硅定向凝固设备,用以替代常规设备的侧壁加热装置,在满足工艺要求的同时达到节能减排、降低成本的目标。进行理论分析和数值模拟来阐述原理与设计结构,对优化凝固工艺、设备结构、控制方法提供了理论依据与技术支持。

关键词：多晶硅定向凝固固液相界面热量补偿数值模拟

Assessments of Data-Driven Deep Learning Models on One-Month Predictions of Pan-Arctic Sea Ice Thickness

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Advances in Atmospheric Sciences 2024年第7期41卷 1379-1390页

作者： Chentao SONG Jiang zhu Xichen LI Institute of Atmospheric Physics Chinese Academy of SciencesBeijing 100029China University of Chinese Academy of Sciences Beijing 100049China

In recent years,deep learning methods have gradually been applied to prediction tasks related to Arctic sea ice concentration,but relatively little research has been conducted for larger spatial and temporal scales,mainly due to the limited time coverage of observations and reanalysis ***,deep learning predictions of sea ice thickness(SIT)have yet to receive ample *** this study,two data-driven deep learning(DL)models are built based on the ConvLSTM and fully convolutional U-net(FC-Unet)algorithms and trained using CMIP6 historical simulations for transfer learning and fine-tuned using reanalysis/*** models enable monthly predictions of Arctic SIT without considering the complex physical processes *** comprehensive assessments of prediction skills by season and region,the results suggest that using a broader set of CMIP6 data for transfer learning,as well as incorporating multiple climate variables as predictors,contribute to better prediction results,although both DL models can effectively predict the spatiotemporal features of SIT *** the predicted SIT anomalies of the FC-Unet model,the spatial correlations with reanalysis reach an average level of 89%over all months,while the temporal anomaly correlation coefficients are close to unity in most *** models also demonstrate robust performances in predicting SIT and SIE during extreme *** effectiveness and reliability of the proposed deep transfer learning models in predicting Arctic SIT can facilitate more accurate pan-Arctic predictions,aiding climate change research and real-time business applications.

关键词： Arctic sea ice thickness deep learning spatiotemporal sequence prediction transfer learning

A Set of SCAR Markers Efficiently Differentiating Hybrid Rice

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Rice science 2012年第1期19卷 14-20页

作者： LI Shu-jing XIE hong-wei QIAN Ming-juan CHEN Guang-hui LI Shao-qing zhu Ying-guo State Key Laboratory of Hybrid Rice Key Laboratory for Research and Utilization of Heterosis in lndica Rice Ministry of Agriculture Engineering Research Center for Plant Biotechology and Germplasm Utilization of Ministry of Education College of Life Sciences Wuhan University Wuhan 430072 China Bangbu Medical College Bangbu 233030 China College of Plant Science Hunan Agricultural University Changsha 410128 China

Molecular markers have been widely used in crop genetic improvement, seed test and genetic mapping. Of which, sequence characterized amplified region （SCAR） markers are particularly popular for its diversity, stable reproducibility, and suitability for analyzing large number of samples. In this study, 500 random amplified polymorphic DNA （RAPD） primers were tested, and a set of SCAR markers comprising 37 pairs of loci-specific primers were developed from the DNA fragments ranging from 300 to 1000 bp which correspond to the stable, distinctive RAPD banding patterns. Using these SCAR markers, 59 hybrid rice combinations were assessed and distinguished into 58 subgroups at the similarity coefficient of 0.97 in a genetic clustering tree based on the allele diversities of the SCAR markers. Furthermore, 13 hybrid rice combinations were reassayed with 40 randomly selected simple sequence repeat （SSR） markers to evaluate the effectiveness of these SCAR markers. SSR markers produced similar results to SCAR markers as the 13 hybrid rice combinations were completely separated at the similarity coefficient of 0.91 in the clustering tree established from SSR patterns. Taken together, SCAR markers prove to be effective tools for identifying and differentiating hybrid rice combinations.

关键词： hybrid rice molecular marker sequence characterized amplified region variety identification