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Tuning up-conversion luminescence in Er3+-doped glass ceramic by phase-shaped femtosecond laser field with optimal feedback control

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Frontiers of physics 2019年第1期14卷 123-129页

作者： Lian-Zhong Deng Yun-Hua Yao Li Deng Huai-Yuan Jia Ye Zheng Cheng Xu jian-Ping Li Tian-Qing Jia jian-rong qiu Zhen-rong Sun Shi-An Zhang State Key Laboratory of Precision Spectroscopy East China Normal University Shanghai 200062 China State Key Laboratory of Silicon Materials Zhejiang University Hangzhou 310027 China Collaborative Innovation Center of Extreme Optics Shanxi University Taiyuan 030006 China State Key Laboratory of Robatics Shenyang Institute of Automation Chinese Academy of Sciences Shenyang 110016 China

Tuning the color output of rare-earth ion doped luminescent nanomaterials has important scientific significance for further extending applications in color displays, laser sources, optoelectronic devices, and biolabeling. In previous studies, pre-designed phase modulation of the femtosecond laser field has been proven to be effective in tuning the luminescence of doped rare-earth ions. Owing to the complex light–matter interaction in the actual experiment, the dynamic range and optimal efficiency for color tuning cannot be determined with the pre-designed phase modulation. This article shares the development of an adaptive femtosecond pulse shaping method based on a genetic algorithm, and its use to manipulate the green and red luminescence tuning in an Er3+-doped glass ceramic under 800-nm femtosecond laser field excitation for the first time. Experimental results show that the intensity ratio of the green and red UC luminescence of the doped Er3+ ions can be either increased or decreased conveniently by the phase-shaped femtosecond laser field with an optimal feedback control. The physical control mechanisms for the color tuning are also explained in detail. This article demonstrates the potential applications of the adaptive femtosecond pulse shaping technique in controlling the color output of doped rare-earth ions.

关键词： nonlinear optics upconversion luminescence rare earth ions luminescent nanomaterials

Association between intra-pancreatic fat deposition and diseases of the exocrine pancreas: A narrative review

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World Journal of Gastroenterology 2025年第2期31卷 27-41页

作者： Jing Ye jian-Guo Wang rong-Qiang Liu Qiao Shi Wei-Xing Wang Department of General Surgery Renmin Hospital of Wuhan UniversityWuhan 430060Hubei ProvinceChina Department of Pancreatic Surgery Renmin Hospital of Wuhan UniversityWuhan 430060Hubei ProvinceChina

Intrapancreatic fat deposition(IPFD)has garnered increasing attention in recent *** prevalence of IPFD is relatively high and associated with factors such as obesity,age,and ***,the pathophysiological mechanisms underlying IPFD remain unclear,with several potential contributing factors,including oxida-tive stress,alterations in the gut microbiota,and hormonal *** was found to be highly correlated with the occurrence and prognosis of exocrine pan-creatic *** imaging techniques remain the primary diagnostic approach for IPFD,an expanding array of biomarkers and clinical scoring systems have been identified for screening ***,effective treatments for IPFD are not available;however,existing medications,such as glucagon-like peptide-1 receptor agonists,and new therapeutic approaches explored in animal models have shown considerable potential for managing this *** paper reviews the pathogenesis of IPFD,its association with exocrine pancreatic disea-ses,and recent advancements in its diagnosis and treatment,emphasizing the significant clinical relevance of IPFD.

关键词： Intrapancreatic fat deposition Pancreatic steatosis Nonalcoholic fatty pancreas disease Pancreatitis Pancreatic cancer

Kinetic model for calcium sulfate decomposition at high temperature

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Transactions of Nonferrous Metals Society of China 2015年第10期25卷 3490-3497页

作者：闫志强王泽安王小锋刘豪邱建荣华中科技大学煤燃烧国家重点实验室武汉430074

A modified shrinking unreacted-core model,based on thermogravimetric analysis,was developed to investigate CaSO4 decomposition in oxy-fuel combustion,especially under isothermal condition which is difficult to achieve in actual experiments due to high-temperature corrosion.A method was proposed to calculate the reaction rate constant for CaSO4 ***,the diffusion of SO2 and O2,and the sintering of CaO were fully considered during the development of *** results indicate that the model can precisely predict the decomposition of CaSO4 under high SO2 concentration（1100×10-6）.Concentrations of SO2 and O2 on the unreacted-core surface were found to increase first and then decrease with increasing temperature,and the average specific surface area and porosity of each CaO sintering layer decreased with increasing *** increase of SO2 and/or O2 concentration inhibited CaSO4 ***,the kinetics of CaSO4 decomposition had obvious dependence on temperature and the decomposition rate can be dramatically accelerated with increasing temperature.

关键词： oxy-fuel combustion shrinking unreacted-core model CaSO4 decomposition CaO sintering

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掐酒方法对酒质的影响

酿酒 2014年第2期41卷 58-60页

作者：吴严飞荣建秋寇晨光顺鑫农业股份有限公司牛栏山酒厂北京顺义101301

掐酒操作是白酒生产中一个重要环节,它是平衡原酒中香与味的关键。一直以来,我厂所产原酒一直按照传统"掐头去尾取中段"的方法来截取。近期,我厂将"掐酒"环节操作进一步细化,在保持"掐头去尾取中段"的基础上,将中段馏分进一步细化分段... 详细信息

掐酒操作是白酒生产中一个重要环节,它是平衡原酒中香与味的关键。一直以来,我厂所产原酒一直按照传统"掐头去尾取中段"的方法来截取。近期,我厂将"掐酒"环节操作进一步细化,在保持"掐头去尾取中段"的基础上,将中段馏分进一步细化分段截取。经过对比,细化分段截取后,原酒的优质酒率和优质酒产量均较传统"掐头去尾"的方法有所提高。

关键词：分段掐酒酸与味乙乳比平衡百分比

Internal structural optimization of hollow fan blade based on sequential quadratic programming algorithm

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航空动力学报 2011年第4期26卷 787-793页

作者： YANG jian-qiu WANG Yan-rong School of Jet Propulsion Beijing University of Aeronautics and Astronautics Beijing 100191 China

Several structural design parameters for the description of the geometric features of a hollow fan blade were determined.A structural design optimization model of a hollow fan blade which based on the strength constraint and minimum mass was established based on the finite element method through these ***,the sequential quadratic programming algorithm was employed to search the optimal *** groups of value for initial design variables were chosen,for the purpose of not only finding much more local optimal results but also analyzing which discipline that the variables according to could be benefit for the convergence and *** surface method and Monte Carlo simulations were used to analyze whether the objective function and constraint function are sensitive to the variation of variables or *** the robust results could be found among a group of different local optimal solutions.

关键词： hollow fan blade structural optimization sequential quadratic algorithm finite element method Monte Carlo simulations

Predictive value of a constructed artificial neural network model for microvascular invasion in hepatocellular carcinoma:A retrospective study

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World Journal of Gastrointestinal Oncology 2025年第1期17卷 88-100页

作者： Hai-Yang Nong Yong-Yi Cen Shan-Jin Lu Rui-Sui Huang Qiong Chen Li-Feng Huang jian-Ning Huang Xue Wei Man-rong Liu Lin Li Ke Ding Department of Radiology The Third Affiliated Hospital of Guangxi Medical UniversityNanning 530031Guangxi Zhuang Autonomous RegionChina Department of Radiology Affiliated Hospital of Youjiang Medical University for NationalitiesBaise 533000Guangxi Zhuang Autonomous RegionChina Guangxi Clinical Medical Research Center for Hepatobiliary Diseases Affiliated Hospital of Youiiang Medical University for NationalitiesBaise 533000Guangxi Zhuang Autonomous RegionChina Department of Ultrasound The Third Affiliated Hospital of Guangxi Medical UniversityNanning 530031Guangxi Zhuang Autonomous RegionChina Department of Hepatobiliary Surgery The Third Affiliated Hospital of Guangxi Medical UniversityNanning 530031Guangxi Zhuang Autonomous RegionChina

BACKGROUND Microvascular invasion(MVI)is a significant risk factor for recurrence and metastasis following hepatocellular carcinoma(HCC)***,there is a paucity of preoperative evaluation approaches for *** To investigate the predictive value of texture features and radiological signs based on multiparametric magnetic resonance imaging in the non-invasive preoperative prediction of MVI in *** Clinical data from 97 HCC patients were retrospectively collected from January 2019 to July 2022 at our *** were classified into two groups:MVI-positive(n=57)and MVI-negative(n=40),based on postoperative pathological *** correlation between relevant radiological signs and MVI status was ***4.6 software and the mutual information method were employed to identify the top 10 dominant texture features,which were combined with radiological signs to construct artificial neural network(ANN)models for MVI *** predictive performance of the ANN models was evaluated using area under the curve,sensitivity,and *** models with relatively high predictive performance were screened using the DeLong test,and the regression model of multilayer feedforward ANN with backpropagation and error backpropagation learning method was used to evaluate the models’*** The absence of a pseudocapsule,an incomplete pseudocapsule,and the presence of tumor blood vessels were identified as independent predictors of HCC *** ANN model constructed using the dominant features of the combined group(pseudocapsule status+tumor blood vessels+arterial phase+venous phase)demonstrated the best predictive performance for MVI status and was found to be automated,highly operable,and very *** The ANN model constructed using the dominant features of the combined group can be recommended as a noninvasive method for preoperative prediction of HCC MVI status.

关键词： Hepatocellular carcinoma Texture analysis Magnetic resonance imaging Microvascular invasion Pseudocapsule Tumor blood vessels

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World Journal of Clinical Cases 2025年第6期13卷 24-29页

作者： Wen-Jin Yuan Yi-Juan Zheng Bing-rong Zhang Yi-Jie Lin You Li Yan-Yan qiu Xue-Ping Yu Department of Infection Disease Clinical Medical Research Center for Bacterial and Fungal Infectious Diseases of Fujian provinceFujian Medical University Affiliated First Quanzhou HospitalQuanzhou 362000Fujian ProvinceChina

BACKGROUND Hydroxyurea,an antimetabolite,is frequently prescribed for various hemato-logical disorders,and its common side effects include gastrointestinal problems,cutaneous or mucosal lesions and pyrexia/*** SUMMARY This study reports the case of a 67-year-old woman who developed recurrent abdominal pain after 10 years of continuous hydroxyurea therapy for primary *** revealed an ileocecal *** discontinuing hydroxyurea therapy for 6 months,follow-up colonoscopy showed a significant reduction in the *** We consider cecal ulcers as a rare complication of hydroxyurea therapy which typically resolves upon stopping the drug.

关键词： Hydroxyurea Ulcer Abdominal pain Thrombocythemia Colonoscopy Case report

不同秸秆还土方式对旱地土壤培肥和玉米产量的影响

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土壤肥料 2004年第3期 7-9,40页

作者：蒋平荣湘民张富强罗建新蒋健容仇少君湖南省农业厅土肥站长沙410005 湖南农业大学资源环境学院长沙410128

采用田间小区试验研究了秸秆还土方式对旱地土壤培肥和玉米产量的影响。结果表明,秸秆翻压与覆盖均有明显培肥土壤,提高玉米产量的作用,但两种还土方式之间的差异不明显。

关键词：秸秆还土方式培肥产量

黑磷/黑砷异质结纳米器件热电性质应力调控研究

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原子与分子物理学报 2025年第1期42卷 69-74页

作者：戎杙邱乙峰张蓓新疆大学物理科学与技术学院乌鲁木齐830046

探索新型高性能低维热电纳米材料已成为国家重大发展策略.论文采用密度泛函理论结合非平衡态格林函数方法研究了由黑磷、黑砷纳米带构建异质结构在2%、4%、6%和8%四种拉伸应变作用下热电性能调控机理.研究结果表明,6%拉伸应变较其他情形... 详细信息

探索新型高性能低维热电纳米材料已成为国家重大发展策略.论文采用密度泛函理论结合非平衡态格林函数方法研究了由黑磷、黑砷纳米带构建异质结构在2%、4%、6%和8%四种拉伸应变作用下热电性能调控机理.研究结果表明,6%拉伸应变较其他情形,能够更有效抑制声子输运行为;与此同时,拉伸应变对于器件的电子输运的调控效果并不明显.在费米能附近,黑磷/黑砷异质结纳米器件在6%拉伸应变调控下热电优值达到最大值2.31.

关键词：黑磷黑砷异质结应力热电性质