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Synergically regulated silver species and surface oxygen on manganese oxide for promoted activity of formaldehyde oxidation

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Journal of Environmental Sciences 2024年第4期138卷 709-718页

作者： Shuo Hu Jianghao Zhang Xueyan Chen xiaoxiao Qin Jinshui yao Changbin Zhang School of Materials Science&Engineering Qilu University of Technology(Shandong Academy of Sciences)Jinan 250353China State Key Joint Laboratory of Environment Simulation and Pollution Control Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China University of Chinese Academy of Sciences Beijing 100049China

Formaldehyde(HCHO)is a common indoor pollutant that is detrimental to human *** efficient removal has become an urgent demand to reduce the public health *** this work,Ag-MnO_(x)-based catalysts were prepared and activated under different atmosphere(i.e.,air,hydrogen(H_(2))and carbon monoxide(CO))for efficient oxidation of *** catalyst activated with CO(Ag/Mn-CO)displayed the highest activity among the tested samples with 90% conversion at 100℃ under a gas space velocity of 75,000 mL/(g_(cat)·hr).Complementary characterizations demonstrate that CO reduction treatment resulted in synergically regulated content of surface oxygen on support to adsorb/activate HCHO and size of Ag particle to dissociate oxygen to oxidize the adsorbed *** contrast,other catalysts lack for either abundant surface oxygen species or metallic silver with the appropriate particle size,so that the integrate activity is limited by one specific reaction *** study contributes to elucidating the mechanisms regulating the oxidation activity of Ag-based catalysts.

关键词： HCHO oxidation Ag-MnO_(x)-based catalyst Activation condition Synergic regulation Surface oxygen Oxidized Ag

Slow state estimation for singularly perturbed systems with discrete measurements

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Science China(Information Sciences) 2021年第7期64卷 252-254页

作者： Yunli LIU Wu-Hua CHEN Xiaomei LU College of Mathematics and Information Science Guangxi University

Dear editor,Many real-world systems exhibit a two-time-scale behavior,such as Hindmarsh-Rose oscillators, DC motors, power networks, and other related systems. Such systems can be modeled using singularly perturbed systems(SPSs). To alleviate the difficulties of high dimensionality and stiffness, Kokotovi′c et al. [1] developed the singular perturbation method for reducing the model order, whereby the full system design is divided into designing separate controllers for fast and slow subsystems. In this regard, O'Reilly [2] proposed a composite full-order observer design method for linear SPSs through observer design in two separate time-scales. Later,

关键词： observer design singularly perturbed systems discrete measurements slow manifold reduced-order observer

Antihypertensive effects of whey protein hydrolysate involve reshaping the gut microbiome in spontaneously hypertension rats

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Food Science and Human Wellness 2024年第4期13卷 1974-1986页

作者： Peipei Dou Xiaoyi Li xiaoxiao Zou Kai Wang Lei yao Zhuo Sun Hui Hong Yongkang Luo Yuqing Tan Key Laboratory of Functional Dairy College of Food Science and Nutritional EngineeringChina Agricultural UniversityBeijing 100083China Hebei Dongkang Dairy Co. Ltd.Shijiazhuang 052160China

Novel angiotensin-converting enzyme(ACE)inhibitory peptides were identified from whey protein hydrolysates(WPH)in vitro in our previous study and the antihypertensive abilities of WPH in vivo were further investigated in the current *** indicated that WPH significantly inhibited the development of high blood pressure and tissue injuries caused by *** inhibited ACE activity(20.81%,P<0.01),and reduced renin concentration(P<0.05),thereby reducing systolic blood pressure(SBP)(12.63%,P<0.05)in spontaneously hypertensive *** increased Akkermansia,Bacteroides,and Lactobacillus abundance promoted high short chain fatty acid content in feces after WPH *** changes jointly contributed to low blood *** heart weight and cardiomyocyte injuries(hypertrophy and degeneration)were alleviated by *** proteomic results revealed that 19 protein expressions in the heart mainly associated with the wingless/integrated(Wnt)signaling pathway and Apelin signaling pathway were altered after WPH ***,WPH alleviated serum oxidative stress,indicated by the decreased malondialdehyde content(P<0.01),enhanced total antioxidant capacity(P<0.01)and superoxide dismutase activity(P<0.01).The current study suggests that WPH exhibit promising antihypertensive abilities in vivo and could be a potential alternative for antihypertensive dietary supplements.

关键词： Whey protein hydrolysate Antihypertension Short chain fatty acids Gut microbiome

Output Feedback Tracking Control of High-order Stochastic Nonlinear Time-delay Systems with Markovian Switching

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Output Feedback Tracking Control of High-order Stochastic No...

激光辐照纳米石墨转变产物的显微形貌和结晶度

第三十九届中国控制会议

作者： Yuyao You Wuquan Li xiaoxiao yao School of Mathematics and Statistics Science Ludong University

This paper investigates the output-feedback tracking control for a class of high-order stochastic nonlinear timedelay systems with Markovian switching. By introducing the homogeneous domination approach and choosing an appropriate Lyapunov-Krasoviskii functional, an output-feedback tracking controller is designed. It can guarantee that the closed-loop system has an unique solution, all the states of the closed-loop system are bounded in probability, and the tracking error converges to an arbitrarily small neighborhood of zero. The efficiency of the output-feedback controller is demonstrated by a simulation example.

关键词： Stochastic nonlinear systems Output-feedback Markovian switching Time-varying delay Tracking

来源： cnki会议评论

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中国激光 2016年第10期43卷 113-119页

作者：骆芳王为彬陆潇晓姚建华浙江工业大学之江学院浙江杭州310024 浙江工业大学激光先进制造研究院浙江杭州310014 浙江省高端激光制造装备协同创新中心浙江杭州310014

在氩气的保护下,用具有振镜扫描系统的500 W光纤激光器辐照预置在单晶硅基体上的纳米石墨颗粒。探究了不同激光能量密度下,受激光辐照后的转变产物显微形貌和晶体结构。用透射电镜(TEM)、拉曼光谱、X射线衍射(XRD)分析了所获产物的显微... 详细信息

在氩气的保护下,用具有振镜扫描系统的500 W光纤激光器辐照预置在单晶硅基体上的纳米石墨颗粒。探究了不同激光能量密度下,受激光辐照后的转变产物显微形貌和晶体结构。用透射电镜(TEM)、拉曼光谱、X射线衍射(XRD)分析了所获产物的显微形貌和晶体度。当激光能量密度达到3.33kJ/cm^2时,转变产物的尺寸与原始颗粒尺寸相比有所增大;当激光能量密度达到4.17kJ/cm^2时,可以在样品颗粒表面观察到线状形貌;而当激光能量密度达到8.33kJ/cm^2时,产物由原始的多晶结构转变成了块状的晶体结构。实验结果表明:激光能量密度对单晶硅基体上纳米石墨颗粒显微形貌和晶体结构的转变有很大的影响。

关键词：激光制造激光辐照转变规律显微形貌晶体结构

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肝门部胆管癌手术切除范围的争议及诊疗进展

临床肝胆病杂志 2020年第3期36卷 704-707页

作者：汪宏姚小晓乔士兴吉林大学第二医院肝胆外科长春130041

肝门部胆管癌(HCCA)是肝外胆管常见的恶性肿瘤,具有解剖位置特殊、肿瘤沿胆管生长、肿瘤恶性程度高、易侵犯肝实质等特点。目前HCCA主要的治疗方式包括手术切除、非手术胆道引流、新辅助放化疗、光动力学疗法等,但手术切除仍是其首选方... 详细信息

肝门部胆管癌(HCCA)是肝外胆管常见的恶性肿瘤,具有解剖位置特殊、肿瘤沿胆管生长、肿瘤恶性程度高、易侵犯肝实质等特点。目前HCCA主要的治疗方式包括手术切除、非手术胆道引流、新辅助放化疗、光动力学疗法等,但手术切除仍是其首选方法。关于HCCA术前是否需要减黄和门静脉栓塞及手术切除范围一直存在争议。对HCCA的临床分型、术前检查及诊断、治疗方法的进展进行阐述。

关键词：胆管肿瘤诊断外科手术

Recent advances in immobilized enzymes on nanocarriers

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Chinese Journal of Catalysis 2016年第11期37卷 1814-1823页

作者：曹诗林徐培马永正姚潇晓姚远宗敏华李雪辉娄文勇华南理工大学化学与化工学院广东广州510640 华南理工大学制浆造纸工程国家重点实验室广东广州510640 华南理工大学食品科学与工程学院应用生物催化实验室广东广州510640 香港理工大学应用生物及化学科技系

Recent progress in nanotechnology has provided high-performance nanomaterials for enzyme *** combining enzymes and nanocarriers are drawing increasing attention because of their high catalytic performance,enhanced stabilities,improved enzyme-substrate affinities,and *** studies have been performed to investigate the efficient use of cellulose nanocrystals,polydopamine-based nanomaterials,and synthetic polymer nanogels for enzyme *** nanobiocatalysts are highlighted in this review,with the emphasis on the design,preparation,properties,and potential applications of nanoscale enzyme carriers and nanobiocatalysts.

关键词： Enzyme immobilization Cellulose nanocrystal Polydopamine Biodegradable material

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对膀胱造口患者进行延续性护理的效果研究

当代医药论丛 2020年第7期18卷 14-15页

作者：姚肖肖山东省济宁市第一人民医院山东济宁272000

目的:探讨对膀胱造口患者进行延续性护理的效果.方法:将2016年4月至2019年2月期间山东省济宁市第一人民医院收治的86例膀胱造口患者作为研究对象.将这86例患者随机分为甲组和乙组,每组各有43例患者.对两组患者均进行膀胱造口术及常规护... 详细信息

目的:探讨对膀胱造口患者进行延续性护理的效果.方法:将2016年4月至2019年2月期间山东省济宁市第一人民医院收治的86例膀胱造口患者作为研究对象.将这86例患者随机分为甲组和乙组,每组各有43例患者.对两组患者均进行膀胱造口术及常规护理,在此基础上,对乙组患者进行延续性护理.然后,对比两组患者生命质量测定量表(QLQ-C30)的评分及并发症的发生率.结果:接受护理后,与甲组患者相比,乙组患者QLQ-C30的评分更高,其并发症的发生率更低,差异具有统计学意义(P<0.05).结论:对膀胱造口患者进行延续性护理的效果显著,可有效地改善其生活质量,降低其并发症的发生率.

关键词：膀胱造口术延续性护理常规护理

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浅论“非遗”项目建档的科学运用

科教文汇 2014年第25期 123-124页

作者：姚晓肖合肥市蜀山区文化馆安徽合肥230061

建立规范"非遗"项目档案是一项功在当代,利在千秋的文化事业,是促进文化持续创新发展的源泉。规范"非遗"档案有利于科学决策,便于创建真实可靠的资源数据库,为"非遗"保护继承研究提供依据,为宣传普及提供素材。

关键词：非遗档案管理科学运用