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Preparation,structure and stability of protein-pterostilbene nanocomplexes coated by soybean polysaccharide and maltodextrin

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Food Bioscience 2022年第5期49卷 662-669页

作者： ling Zhu Fan Yang dongze li Gangcheng Wu Hui Zhang School of Food Science and Technology Jiangnan UniversityWuxi214122China National Engineering Research Center for Functional Food Jiangnan UniversityChina Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province China

Pterostilbene(PTS)has received considerable attention in recent years because of its beneficial effects on health;however,its poor solubility hinders its application in the food *** study aimed to prepare and characterise three types of proteins(whey protein isolate(WPI),soybean protein isolate(SPI),and flaxseed protein isolate(FPI))conjugates of PTS,which could improve its solubility and *** results showed that the spherical particles of the protein-based nano-complexes were dissociated and *** bound to PTS mainly through hydrophobic interactions and hydrogen bonding,and PTS in proteins existed in an amorphous *** conferred PTS with better thermal stability than WPI and *** coating of FPI-PTS with soybean polysaccharide and maltodextrin yielded a more stable nanocomplex *** prepared nanocomplex powder exhibited better thermal,illumination,and storage stabilities than *** study provides guidelines for the potential application of protein-based nano-complexes in functional foods.

关键词： Proteins Pterostibene Nanocomplex structure Coating Stability

Greener Gd-doped ZnAglnS3 Quantum Dots for Fluorescent and Magnetic Resonance Imaging Applications

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Chemical Research in Chinese Universities 2015年第1期31卷 1-3页

作者： liU Yang li dongze ZHANG Ying liU Zhihui XIE Renguo Department of Prosthodontics Stomatological Hospital of Jilin University Changchun 130021 P. R. China Department of Respiration the First Hospital of Jilin University Changehun 130021 P. R. China State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of Chemistry Jilin University Changchun 130012 P. R. China

The combination of fluorescent imaging and magnetic resonance imaging（MRI） techniques has attracted intense attention due to the complementary imaging ability of the two modalities. Optical imaging, especially fluorescence imaging, has good sensitivity, but poor tissue penetration ability, while MRI offers anatomical details and 3D information of soft tissue with high quality in a non-invasive manner. Therefore, MRI/fluorescence dual-imaging technique should have exciting clinical potential in some application fields.

关键词： Semiconductor Quantum dot Nanocrystal Magnetic resonance imaging Fluorescent imaging

Development and Validation of a New Prognostic Model for Predicting Survival Outcomes in Patients with Acute-onchronic liver Failure

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Journal of Clinical and Translational Hepatology 2024年第10期12卷 834-844页

作者： Wende li Wanshu liu Yihui Rong dongze li Bing Zhu Shaobo Yang Shidong Sun Shaoli You Yu Chen Jun li Department of Infection and liver Diseases Peking University International HospitalBeijingChina Department of Hepatology Medicine Fifth Medical Center of Chinese PLA General HospitalBeijingChina Fourth Department of liver Disease Beijing Youan HospitalCapital Medical UniversityBeijingChina State Key Laboratory for Diagnosis and Treatment of Infectious Diseases Collaborative Innovation Center for Diagnosis and Treatment of Infectious DiseasesZhejiang University School of Medicine First Affiliated HospitalHangzhouZhejiangChina

Background and Aims:Early determination of prognosis in patients with acute-on-chronic liver failure(ACLF)is crucial for optimizing treatment options and liver *** study aimed to identify risk factors associated with ACLF and to develop new prognostic models that accurately predict patient ***:We retrospectively selected 1,952 hospitalized patients diagnosed with ACLF between January 2010 and June *** cohort was used to develop new prognostic scores,which were subsequently validated in external ***:The study included 1,386 ACLF patients and identified six independent predictors of 28-day mortality through multivariate analysis(all plities,with Areas under the ROC curves of 0.863 and 0.853,respectively(all plity among ACLF patients with ACLF,showing a significant difference in survival between patients categorized by the cut-off value(log-rank(Mantel-Cox)χ^(2)=487.574 and 606.441,p=0.000).Additionally,the new model exhibited good robustness in two external ***:This study presents a refined prognostic model,the Model for end-stage liver disease-complication score,which accurately predicts short-term mortality in ACLF *** model offers a new perspective and tool for improved clinical decision-making and short-term prognostic assessment in ACLF patients.

关键词： Acute-on-chronic liver failure ACLF Outcome prediction Mortality Prognosis Model

Large-scale synthesis of single-source, thermally stable, and dual-emissive Mn-doped Zn-Cu-ln-S nanocrystals for bright white light-emitting diodes

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Nano Research 2015年第10期8卷 3316-3331页

作者： Lucheng Peng dongze li Zhuolei Zhang Keke Huang Ying Zhang Zhan Shi Renguo Xie Wensheng Yang StateKeyLaboratoryofInorganicSynthesisandPreparativeChemistry CollegeofChemistryJilinUniversityChangchun130012China StateKeyLaboratoryforSupramolecularStructureandMaterials CollegeofChemistryJilinUniversityChangchun130012China

The global demand for resource sustainability is growing. Thus, the development of single-source, environment-friendly colloidal semiconductor nanocrystal （NC） phosphors with broadband emission spectra is highly desirable for use as color converters in white light-emitting diodes （WLEDs）. We report herein the gram-scale synthesis of single-source, cadmium-free, dual-emissive Mn-doped Zn-Cu-In-S NCs （d-dots） by a simple, non-injection, low-cost, one-pot approach. This synthesis method led to the formation of NCs with continuously varying compositions in a radial direction because each precursor had a different reactivity. Consequently, the d-dots exhibited two emission bands, one that could be attributed to Mn emission and a second that could be ascribed to the band edge of the Zn-Cu-In-S NCs. The emission peaks assigned to band edge were tunable by modifying the particle size and composition. The prepared d-dots also exhibited the characteristic zero self-absorption, a quantum yield of 46%, and good thermal stability. Combining a commercial blue light-emitting diode （LED） chip with optimized d-dots as color converters gave a high color rendering index of up to 90, Commission Internationale de l＇eclairage color coordinates of （0.332, 0.321）, and a correlated color temperature of 5,680 K. These results suggest that cadmium-free, thermally stable, single-phase d-dot phosphors have potential applications in WLEDs.

关键词： white light-emitting diodes(WLEDs) nanocrystals cadmium free Mn-doped Zn-Cu-In-S lighting

Immune dysfunction leads to mortality and organ injury in patients with COVID-19 in China:insights from ERS-COVID-19 study

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Signal Transduction and Targeted Therapy 2020年第1期5卷 1895-1897页

作者： dongze li You Chen Hong liu Yu Jia Fanghui li Wei Wang Jiang Wu Zhi Wan Yu Cao Rui Zeng Department of Emergency Medicine and Laboratory of Emergency Medicine Deep Underground Space Medical CenterDisaster Medical CenterWest China School of NursingWest China HospitalSichuan UniversityChengduChina Department of Cardiology The First Affiliated Hospital of Xinjiang Medical UniversityUrumqiChina Department of Cardiology West China HospitalSichuan UniversityChengduChina

Dear Editor,A series of novel coronavirus disease 2019(COVID-19)caused by severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)since the end of 2019 is ongoing and triggering a global public health *** estimated case fatality rate is approximately 3.4%in ***,some patients experience dyspnea within 1 week and develop rapidly to organ injury and even death within 2 weeks after dyspnea.1 In addition,early organ injury could lead to higher risks of ***,early identification of patients at risk of organ injury and death is crucial,which saves the patients from classified and invasive treatment,improving clinical outcome and *** human immune system plays significant roles in the resistance of foreign pathogens and the progress of *** studies have mentioned that T cells were decreased in COVID-19 patients,excessive activated immune response was caused by pathogenic Th1 cells,and inflammatory CD14+CD16+monocytes may connect to pulmonary immunopathology,leading to deleterious clinical manifestations and even acute mortality after SARS-CoV-2 infections.2 SARS-CoV-2 might damage lymphocytes,especially T lymphocytes,and the immune system was impaired during the period of disease to cause tissue injury.

关键词： COVID-19 Immune dysfunction Mortality Organ injury

Alleviating the crosstalk effect via a fine-moulded light-blocking matrix for colour-converted micro-LED display with a 122% NTSC gamut

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light(Advanced Manufacturing) 2022年第3期3卷 197-204页

作者： Yongming Yin Zhiping Hu Muhammad Umair Ali Miao Duan Yongwei Wu Ming liu Wenxiang Peng Jun Hou dongze li Xin Zhang Hong Meng School of Advanced Materials Shenzhen Graduate SchoolPeking UniversityShenzhen 518055China Hangzhou Institute for Advanced Study University of Chinese Academy of SciencesHangzhou 310024China Tsinghua-Berkeley Shenzhen Institute(TBSI) Tsinghua Shenzhen International Graduate SchoolTsinghua UniversityShenzhen 518055China TCL China Star Optoelectronics Technology Co. Ltd.(CSOT)Shenzhen 518132China

One of the major challenges when fabricating high gamut colour-converted micro-light-emitting diodes(LEDs)displays is severe crosstalk effect among adjacent pixels because of the wide view-angle feature of micro-LED *** this study,potential factors that contribute to the crosstalk effect were systematically *** observed that precisely filling the space between each micro-LED chip with a light blocking matrix(LBM)can be a promising solution to alleviate this *** careful investigations,a press-assisted moulding technique was demonstrated to be an effective approach of fabricating the ***,experimental observations further revealed that residual black LBM on the surface of micro-LEDs severely reduces the brightness,thereby compromising the display *** problem was successfully addressed by employing a plasma etching technique to efficiently extract the trapped ***,a top-emitting blue micro-LED-based backlight fine-moulded with a black LBM was developed and combined with red and green quantum dot colour-conversion layers for full-colour *** colour gamut of our manufactured display prototype can cover as high as 122%that of the National Television Standards Committee.

关键词： Micro-LED Crosstalk effect Quantum dots Color conversion Plasma etching Fine-moulding

SiO_2-MWNTs/聚乳酸复合材料的冷结晶动力学及球晶形态

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复合材料学报 2015年第3期32卷 737-743页

作者：石坚卢秀萍李红月李东泽天津科技大学材料科学与化学工程学院天津300457

为研究多壁碳纳米管(MWNTs)对聚乳酸(PLA)冷结晶动力学和球晶形态的影响,分别以PLA和表面包覆纳米SiO2并接枝硅烷偶联剂的纳米SiO2改性MWNTs(SiO2-MWNTs)为基体和改性剂,经溶液共混法制备了SiO2-MWNTs/PLA复合材料。采用DSC、偏光显微镜... 详细信息

为研究多壁碳纳米管(MWNTs)对聚乳酸(PLA)冷结晶动力学和球晶形态的影响,分别以PLA和表面包覆纳米SiO2并接枝硅烷偶联剂的纳米SiO2改性MWNTs(SiO2-MWNTs)为基体和改性剂,经溶液共混法制备了SiO2-MWNTs/PLA复合材料。采用DSC、偏光显微镜、Jeziorny模型和Johnson-Mehl-Avrami模型研究了复合材料的非等温冷结晶动力学和球晶形态。结果表明:SiO2-MWNTs可作为异相成核剂,能有效降低SiO2-MWNTs/PLA复合材料的冷结晶温度,提高晶核生成速率和晶体生长活化能。SiO2-MWNTs/PLA复合材料的冷结晶过程主要由成核作用控制,加入SiO2-MWNTs可同时提高复合材料的结晶速率和结晶度。冷结晶时,PLA球晶尺寸小于熔体冷却结晶时的,且SiO2-MWNTs含量对冷结晶球晶尺寸的影响远小于其对熔体冷却结晶球晶尺寸的。所得结论对优化PLA的结晶结构和性能、制备高性能PLA复合材料具有指导意义。

关键词：聚乳酸碳纳米管纳米SiO2 包覆冷结晶结晶动力学球晶形态

一级抗震预应力型钢混凝土空腹桁架转换层框架结构三道防线抗震设防设计方法

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建筑结构学报 2021年第1期42卷 57-66页

作者：简斌李东泽林元刘郁重庆大学山地城镇建设与新技术教育部重点实验室重庆400045 重庆大学土木工程学院重庆400045 北京城建设计发展集团股份有限公司北京100161

基于"强化转换层及其下部、相对弱化转换层上部"的抗震设计理念,提出了一级抗震大跨度预应力型钢混凝土(PSRC)空腹桁架转换层框架结构"三道防线抗震设防"的设计目标,明确了三道防线的具体划分方法、各防线内力调整措施初步方案以及主要... 详细信息

基于"强化转换层及其下部、相对弱化转换层上部"的抗震设计理念,提出了一级抗震大跨度预应力型钢混凝土(PSRC)空腹桁架转换层框架结构"三道防线抗震设防"的设计目标,明确了三道防线的具体划分方法、各防线内力调整措施初步方案以及主要抗震性能的量化控制指标。然后,以两榀不同上抬层数的8度(0.2g)一级抗震的两跨PSRC空腹桁架转换层框架结构为研究对象,在对初步方案设计结构进行罕遇地震水准下弹塑性时程分析的基础上,提出了提高转换柱弯矩增大系数和单侧最小配筋率的新方案,避免了罕遇地震作用下初步方案设计结构转换柱出现塑性铰数量较多、塑性铰转动较大的问题。在罕遇地震作用下,新方案设计结构不发生整体破坏和局部破坏,形成以第一道防线梁充分出现塑性铰耗能的"梁柱混合出铰机制",各防线均满足量化控制指标要求,结构设计达到了"三道防线抗震设防"目标。最后,在极罕遇地震下,进一步检验了新方案下"三道防线抗震设防"设计方法的有效性。

关键词：预应力型钢混凝土空腹桁架转换结构抗震性能弹塑性时程分析三道防线抗震设防

一级抗震预应力混凝土框架混合出铰机制下柱端弯矩增大系数研究

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建筑结构学报 2019年第5期40卷 132-140页

作者：简斌汤甜恬李东泽重庆大学山地城镇建设与新技术教育部重点实验室重庆400045 重庆大学土木工程学院重庆400045

按GB 50011—2010《建筑抗震设计规范》要求,对一级抗震预应力混凝土框架结构(简称"一级PC框架")进行"强柱弱梁"调整时,会出现中柱配筋面积过大及节点受剪承载力不足等问题。为降低中柱配筋,提出了一级PC框架结构"弱化中柱"、"强化边柱"... 详细信息

按GB 50011—2010《建筑抗震设计规范》要求,对一级抗震预应力混凝土框架结构(简称"一级PC框架")进行"强柱弱梁"调整时,会出现中柱配筋面积过大及节点受剪承载力不足等问题。为降低中柱配筋,提出了一级PC框架结构"弱化中柱"、"强化边柱"的"强柱弱梁"调整方案,即通过弱化中柱配筋、强化边柱配筋,定义"强柱弱梁"框架为"罕遇地震作用下中柱和PC梁出现塑性铰,边柱除底层柱底外基本不出现塑性铰"的混合出铰有限延性框架。以4榀按抗震设防烈度8度(0. 2g)设计的不同跨数、层数的一级PC框架为研究对象,进行柱端弯矩增大系数研究。首先弱化中柱配筋,然后以控制边柱纵筋临界屈服为目标,对各个PC框架算例输入30条罕遇地震水准的地震波进行弹塑性时程分析,由梁实际配筋的正截面受弯承载力反算边柱所需的柱端弯矩增大系数,并经统计分析后提出具有明确概率意义的增大系数建议值。按照上述调整方案对算例进行再设计和弹塑性时程分析,结果表明,该调整方案能够避免结构在罕遇地震作用下出现整体和局部破坏,边柱除底层柱底外基本不出现塑性铰,上部楼层边柱总体安全储备较大,结构表现为以中柱和预应力梁出现塑性铰的混合耗能机制。

关键词：预应力混凝土框架结构一级抗震强柱弱梁时程分析柱端弯矩增大系数