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利用CES1和DPP-IV的组织残余活性准确评估和追踪特异性肝损伤过程 Article

潘秋莎, 宋培放, 倪振华, 钱星凯, 王安琪, 邹立伟, 刘勇, 王平, 张卫东, 马红, 杨凌

《工程(英文)》 2022年 第19卷 第12期   页码 153-165 doi: 10.1016/j.eng.2021.09.014

摘要: 研究发现羧酸酯酶1(CES1)作为肝内标志物和肽酶4(DPP-IV)作为肝外标志物可反映肝脏损伤的不同病理生理状态。CES1 和DPP-IV 水平可甄别肝损伤本身和炎症损伤之间的差异。尽管血清与组织中γ-谷氨酰基转肽酶(γ-GT)升降水平的变化方向相反,但其持续时间远短于CES1,并迅速恢复到正常水平。

关键词: 羧酸酯酶1     肽酶4     特异性肝脏损伤     标志物来源追溯    

基于硫化钛可饱和吸收体的被动锁模掺铒光纤激光器 Research Articles

尚新新1,3,4,郭林广1,3,4,张华年2,李登旺1,3,4,岳庆炀1,3,4

《信息与电子工程前沿(英文)》 2021年 第22卷 第5期   页码 615-766 doi: 10.1631/FITEE.2000341

摘要: 本文采用液相剥离法和旋涂法合成调制深度为5.08%、饱和强度为10.62 MW/cm2的硫化钛聚乙烯醇薄膜型可饱和吸收体。由于硫化钛可饱和吸收体具有很强的非线性饱和吸收特性,在掺铒锁模光纤激光器中观测到两种类型的光孤子。实验证明层状维材料硫化钛具有优异的非线性饱和吸收特性,在超快光子学领域具有广阔应用前景。

关键词: 光纤激光器;被动锁模;可饱和吸收体;硫化钛    

多智能体系统的分异步脉冲跟踪一致性 Research Article

张玲忠1,李媛媛2,楼俊钢3,卢剑权4

《信息与电子工程前沿(英文)》 2022年 第23卷 第10期   页码 1522-1532 doi: 10.1631/FITEE.2100122

摘要:

本文研究了多智能体系统如何通过实施异步脉冲控制输入实现分布式分领导跟随一致性。所提出的异步脉冲控制方法不要求所有多智能体的脉冲信号同时发生。在领导者控制输入非零的情况下,得到了在闭环多智能体系统中实现分异步脉冲跟踪一致性的充分条件。本文讨论了更广泛的异步脉冲效应范围。所设计的控制器反馈部分可有效对抗脉冲扰动。

关键词: 分追踪;多智能体系统;异步脉冲;一致性    

DNAN的高级氧化过程研究 Article

苏海磊, Christos Christodoulatos, Benjamin Smolinski, Per Arienti, Greg O´Connor, 孟晓光

《工程(英文)》 2019年 第5卷 第5期   页码 849-854 doi: 10.1016/j.eng.2019.08.003

摘要:

2,4-硝基茴香醚(DNAN)是用于替代2,4,6-三硝基甲苯(TNT)的钝感炸药的一种重要成分。结果显示,初始pH为4~7且H2O2剂量为1500~4500 ppm,使用UV/ H2O2处理浓度为250 ppm

关键词: 2     4-硝基茴香醚     高级氧化技术     废水处理     光催化    

硫化铼超薄纳米片的制备及其在调Q掺铒光纤激光器中的应用 Research

何俊杉1,2,3,4,曾国华1,刘绍贤1,卢海明1,谢锐贤1,戚晶晶1, 陶丽丽1,周博2,3,4

《信息与电子工程前沿(英文)》 2021年 第22卷 第3期   页码 287-436 doi: 10.1631/FITEE.2000339

摘要: 本文通过液相剥离法从自制硫化铼粉末中制备硫化铼超薄纳米片,并将其应用在调Q掺铒光纤激光器中。XRD、Raman和XPS表征结果证明具有层状结构硫化铼的成功合成;通过SEM和AFM表征发现所制备的硫化铼纳米片横向尺寸低于200 nm,厚度小于5 nm。将硫化铼/PVA复合薄膜作为可饱和吸收体放入掺铒光纤激光器中可以获得调Q脉冲输出,脉冲宽度最窄为2.4 μs,输出功率为1.25 mW,揭示了硫化铼在Q调制方面的潜在应用价值。

关键词: 硫化铼;可饱和吸收体;维材料;调Q光纤激光器    

ZnFe2O4/BiVO4 Z-scheme heterojunction for efficient visible-light photocatalytic

《化学科学与工程前沿(英文)》 2023年 第17卷 第11期   页码 1728-1740 doi: 10.1007/s11705-023-2322-z

摘要: A novel Z-scheme ZnFe2O4/BiVO4 heterojunction photocatalyst was successfully synthesized using a convenient solvothermal method and applied in the visible light photocatalytic degradation of ciprofloxacin, which is a typical antibiotic contaminant in wastewater. The heterostructure of as-synthesized catalysts was confirmed using X-ray diffraction, scanning electron microscopy, transmission electron microscopy and X-ray photoelectron spectroscopy characterizations. Compared with the single-phase counterparts, ZnFe2O4/BiVO4 demonstrated considerably enhanced photogenerated charge separation efficiencies because of the Z-scheme transfer mechanism of electrons between the composite photocatalysts. Consequently, the 30% ZnFe2O4/BiVO4 catalyst afforded a degradation rate of up to 97% of 20 mg/L ciprofloxacin under 30 min of visible light irradiation with a total organic carbon removal rate of 50%, which is an excellent activity compared with ever reported BiVO4-based catalysts. In addition, the liquid chromatography-mass spectrometry and quantitative structure-activity relationships model analyses demonstrated that the toxicity of the intermediates was lower than that of the parent ciprofloxacin. Moreover, the as-synthesized ZnFe2O4/BiVO4 heterojunctions were quite stable and could be reused at least four times. This study thus provides a promising Z-scheme heterojunction photocatalyst for the efficient removal and detoxication of antibiotic pollutants from wastewater.

关键词: ZnFe2O4/BiVO4     Z-scheme heterojunction     photocatalytic degradation     ciprofloxacin    

Li4SiO4-coated LiNi0.5Mn1.5O4 as the high performance

Shifeng YANG, Wenfeng REN, Jian CHEN

《能源前沿(英文)》 2017年 第11卷 第3期   页码 374-382 doi: 10.1007/s11708-017-0494-2

摘要: The preparation of Li SiO -coated LiNi Mn O materials by sintering the SiO -coated nickel-manganese oxides with lithium salts using abundant and low-cost sodium silicate as the silicon source was reported. The samples were characterized by X-ray diffraction, scanning electron microscopy and transmission electron microscopy. It was found that a uniform and complete SiO coating layer could be obtained at a suitable pH value of 10, which transformed to a good Li SiO coating layer afterwards. When used as the cathode materials for lithium-ion batteries, the Li SiO -coated LiNi Mn O samples deliver a better electrochemical performance in terms of the discharge capacity, rate capability, and cycling stability than that of the pristine material. It can still deliver 111.1 mAh/g at 20 C after 300 cycles, with a retention ratio of 93.1% of the stable capacity, which is far beyond that of the pristine material (101.3 mAh/g, 85.6%).

关键词: lithium-ion batteries     cathode material     LiNi0.5Mn1.5O4     lithium-ion conductor     coating    

Enhanced debromination of 2,2′,4,4′-tetrabromodiphenyl ether (BDE-47) by zero-valent zinc with ascorbic

Chaojin Jiang, Xiaoqian Jiang, Lixun Zhang, Yuntao Guan

《环境科学与工程前沿(英文)》 2020年 第14卷 第3期 doi: 10.1007/s11783-020-1224-2

摘要: Highly efficient debromination of BDE-47 was achieved in the ZVZ/AA system. BDE-47 debromination by the ZVZ/AA can be applied to a wide range of pH. AA inhibits the formation of (hydr)oxide and accelerates the corrosion of ZVZ. Reduction mechanism of BDE-47 debromination by the ZVZ/AA system was proposed. A new technique of zero-valent zinc coupled with ascorbic acid (ZVZ/AA) was developed and applied to debrominate the 2,2′,4,4′-Tetrabromodiphenyl ether (BDE-47), which achieved high conversion and rapid debromination of BDE-47 to less- or non-toxic forms. The reaction conditions were optimized by the addition of 100 mg/L ZVZ particles and 3 mmol/L AA at original solution pH= 4.00 using the solvent of methanol/H2O (v:v= 4:6), which could convert approximately 94% of 5 mg/L BDE-47 into lower-brominated diphenyl ethers within a 90 min at the ZVZ/AA system. The high debromination of BDE-47 was mainly attributed to the effect of AA that inhibits the formation of Zn(II)(hydr)oxide passivation layers and promotes the corrosion of ZVZ, which leads to increase the reactivity of ZVZ. Additionally, ion chromatography and gas chromatography mass spectrometry analyses revealed that bromine ion and lower-debromination diphenyl ethers formed during the reduction of BDE-47. Furthermore, based on the generation of the intermediates products, and its concentration changes over time, it was proposed that the dominant pathway for conversion of BDE-47 was sequential debromination and the final products were diphenyl ethers. These results suggested that the ZVZ/AA system has the potential for highly efficient debromination of BDE-47 from wastewater.

关键词: 2     2′     4     4′-tetrabromodiphenyl ether (BDE-47)     Ascorbic acid     Reductive debromination     Zero-valent zinc    

Knockdown of RFC4 inhibits the cell proliferation of nasopharyngeal carcinoma and

《医学前沿(英文)》 2023年 第17卷 第1期   页码 132-142 doi: 10.1007/s11684-022-0938-x

摘要: Nasopharyngeal carcinoma (NPC) is a malignant tumor that mainly occurs in East and Southeast Asia. Although patients benefit from the main NPC treatments (e.g., radiotherapy and concurrent chemotherapy), persistent and recurrent diseases still occur in some NPC patients. Therefore, investigating the pathogenesis of NPC is of great clinical significance. In the present study, replication factor c subunit 4 (RFC4) is a key potential target involved in NPC progression via bioinformatics analysis. Furthermore, the expression and mechanism of RFC4 in NPC were investigated in vitro and in vivo. Our results revealed that RFC4 was more elevated in NPC tumor tissues than in normal tissues. RFC4 knockdown induced G2/M cell cycle arrest and inhibited NPC cell proliferation in vitro and in vivo. Interestingly, HOXA10 was confirmed as a downstream target of RFC4, and the overexpression of HOXA10 attenuated the silencing of RFC4-induced cell proliferation, colony formation inhibition, and cell cycle arrest. For the first time, this study reveals that RFC4 is required for NPC cell proliferation and may play a pivotal role in NPC tumorigenesis.

关键词: nasopharyngeal carcinoma     WGCNA     RFC4     proliferation    

氧化碳捕集、利用与封存技术 Perspectives

林青阳, 张霄, 王涛, 郑成航, 高翔

《工程(英文)》 2022年 第14卷 第7期   页码 27-32 doi: 10.1016/j.eng.2021.12.013

摘要:

人类活动造成的氧化碳(CO2 )排放是引起全球变暖和气候变化的主要原因之一。绝大部分氧化碳 的排放来源于化石燃料燃烧,以及钢铁和水泥生产等工业过程。氧化碳的排放会导致气候变化,而 氧化碳捕集、利用与封存(CCUS)是一种可持续性技术,在减排方面具有前景。从这个角度而言,氧化 碳捕集着重于化学吸收技术,主要原因在于其商业化潜力。本文对各种化学溶剂吸收氧化碳的能力和 速率进行了总结。氧化碳的利用重点在于电化学转化途径,即将氧化碳转化为具有潜在价值的化学 品,这一途径已经备受关注。通过不同氧化碳减排产品的法拉第转换效率,可对效率的改善情况进行 说明。为了成功应用氧化碳封存技术,需要更好地了解流体力学、地质力学以及反应运移,本文将详细讨论这几点。

关键词: 氧化碳捕集、利用与封存     氧化碳捕集     氧化碳利用     氧化碳封存     化学吸收     电化学转化     封存机制    

4D打印定律 Article

Farhang Momeni, Jun Ni

《工程(英文)》 2020年 第6卷 第9期   页码 1035-1055 doi: 10.1016/j.eng.2020.01.015

摘要: 相应地,四维(4D)打印是一个涉及多个研究领域的制造工艺。4D打印保留了3D打印的一般属性(如减少材料浪费、消除注射模具、冲压模具和机械加工过程),并且随着时间的推移能实现产品第四维度的智能行为。3D和4D打印结构的主要区别是4D打印存在一个附加的维度,这个维度可以随着时间的推移进行智能进化。然而,目前还没有用于建模和预测这个附加维度的一般公式。本文从基本原理开始,导出并验证了一个具有特定格式的一般双指数公式,该公式可以模拟几乎所有4D结构的时间相关性行为(如水、光化学、光热、溶剂、pH、湿度、电化学、电热、超声波等响应)。研究表明,需要利用两种类型的时间常数来捕捉4D多材料的正确的时间相关性行为。本文引入了4D多材料结构中主动材料和被动材料的界面错配压力的概念,从而得到了两个时间常数之一。本文的结果从最基本的概念开始,并以控制方程结束,可以作为未来4D打印领域研究的一般设计原则,其中时间相关性行为应该被正确地理解、建模和预测。

关键词: 制造业     刺激响应材料     材料力学     时间常数     4D打印    

Synthesis, insecticidal activities and DFT study of pyrimidin-4-amine derivatives containing the 1,2,4

《化学科学与工程前沿(英文)》 2022年 第16卷 第7期   页码 1090-1100 doi: 10.1007/s11705-021-2091-5

摘要: Twenty six novel pyrimidin-4-amine derivatives containing the 1,2,4-oxadiazole motif were synthesized. Their chemical structures were confirmed by 1H nuclear magnetic resonance (NMR), 13C NMR, and high-resolution mass spectrography. The insecticidal activity results indicated that some of them possessed excellent insecticidal activity (100%) against Mythimna separate, especially for compounds 6d, 6f, 6o, 6w, 6y and 6z. These compounds exhibited no activity against the insects Aphis medicagini and Tetranychus cinnabarinus. The structure- insecticidal activity relationships are discussed. Density functional theory analysis can potentially be used to design more active compounds. These results provide useful insecticide design information for further optimization.

关键词: synthesis     pyrimidin-4-amine derivatives     1     2     4-oxadiazole     insecticidal activity     structure-activity relationship    

Identifying stakeholders’ roles and relevant project documents for 4D-based collaborative decision making

Veronika BOLSHAKOVA, Annie GUERRIERO, Gilles HALIN

《工程管理前沿(英文)》 2020年 第7卷 第1期   页码 104-118 doi: 10.1007/s42524-019-0041-4

摘要: To fully understand and effectively implement 4D building information modelling (BIM) models and methods, we need to develop a precise knowledge of which project digital documents should be used and how they influence the decision-making (DM) process. This article studies the convergence between uses of 4D BIM and digital project documents. We hypothesize that a clear visualization of the construction simulation through a 4D model is a useful source of information and a support for DM at collaborative meetings. Through this research, we continue to progress toward a new 4D-based collective decision device, so these elements will contribute to propose 4D BIM as DM support on architecture engineering construction (AEC) projects. Further, the present research will be complemented by results from questionnaires given at a later research stage. The article presents a brief review of BIM context to consider ways of fostering the implementation of all 4D BIM uses (not only visualization). It then introduces a proposition for 4D BIM uses implementation by the project development phase. It concludes by summarizing stakeholders’ roles and documents relevant to 4D BIM uses.

关键词: BIM     4D BIM     4D BIM use     AEC project management     collaboration     decision making    

4Pi荧光超分辨显微术综述 Review

郝翔, 李依明, 傅爽, 李旸晖, 许迎科, 匡翠方, 刘旭

《工程(英文)》 2022年 第11卷 第4期   页码 146-153 doi: 10.1016/j.eng.2020.07.028

摘要: 回顾这些历程,一个重要的里程碑是基于两个对置物镜的4Pi 显微架构及其超分辨版本的出现。鉴于此,本文综述了4Pi 超分辨显微术的近期进展。总体上,4Pi 超分辨显微镜为透明样品观测提供了一
种能够突破衍射极限、非侵入、各向同性的三维分辨率的技术手段。具体而言,本文针对目标开关和随机开关两个主要4Pi 超分辨显微术版本,讨论了它们的架构、原理、应用和未来发展趋势。

关键词: 荧光超分辨显微术     超分辨成像     4Pi超分辨显微术     isoSTED     4Pi-SMLM    

对双层组件4D打印可逆性的初步研究 Article

Amelia Yilin Lee, Jia An, Chee Kai Chu, Yi Zhang

《工程(英文)》 2019年 第5卷 第6期   页码 1159-1170 doi: 10.1016/j.eng.2019.09.007

摘要:

增材制造的快速发展和形状记忆聚合物材料的进步推动了四维(4D)打印技术的进展。随着设计方面的不断改进,逐渐证明有可能实现可逆4D打印或双向4D打印。这项技术将完全消除对人为干预的需要,因为编程完全由外部刺激驱动,这使得4D打印部件可以在多个周期内启动。本研究提出了一种新的可逆4D打印驱动方法,其中弹性体的溶胀和热量用于编程阶段,以及热量用于恢复阶段。本研究的主要重点在于自驱动设计这一步骤。采用这种方式理解曲率可以提供对可逆4D打印结构的高度控制。

关键词: 4D打印     增材制造     形状记忆聚合物     可逆4D打印     双向4D打印     溶胀弹性体    

标题 作者 时间 类型 操作

利用CES1和DPP-IV的组织残余活性准确评估和追踪特异性肝损伤过程

潘秋莎, 宋培放, 倪振华, 钱星凯, 王安琪, 邹立伟, 刘勇, 王平, 张卫东, 马红, 杨凌

期刊论文

基于硫化钛可饱和吸收体的被动锁模掺铒光纤激光器

尚新新1,3,4,郭林广1,3,4,张华年2,李登旺1,3,4,岳庆炀1,3,4

期刊论文

多智能体系统的分异步脉冲跟踪一致性

张玲忠1,李媛媛2,楼俊钢3,卢剑权4

期刊论文

DNAN的高级氧化过程研究

苏海磊, Christos Christodoulatos, Benjamin Smolinski, Per Arienti, Greg O´Connor, 孟晓光

期刊论文

硫化铼超薄纳米片的制备及其在调Q掺铒光纤激光器中的应用

何俊杉1,2,3,4,曾国华1,刘绍贤1,卢海明1,谢锐贤1,戚晶晶1, 陶丽丽1,周博2,3,4

期刊论文

ZnFe2O4/BiVO4 Z-scheme heterojunction for efficient visible-light photocatalytic

期刊论文

Li4SiO4-coated LiNi0.5Mn1.5O4 as the high performance

Shifeng YANG, Wenfeng REN, Jian CHEN

期刊论文

Enhanced debromination of 2,2′,4,4′-tetrabromodiphenyl ether (BDE-47) by zero-valent zinc with ascorbic

Chaojin Jiang, Xiaoqian Jiang, Lixun Zhang, Yuntao Guan

期刊论文

Knockdown of RFC4 inhibits the cell proliferation of nasopharyngeal carcinoma and

期刊论文

氧化碳捕集、利用与封存技术

林青阳, 张霄, 王涛, 郑成航, 高翔

期刊论文

4D打印定律

Farhang Momeni, Jun Ni

期刊论文

Synthesis, insecticidal activities and DFT study of pyrimidin-4-amine derivatives containing the 1,2,4

期刊论文

Identifying stakeholders’ roles and relevant project documents for 4D-based collaborative decision making

Veronika BOLSHAKOVA, Annie GUERRIERO, Gilles HALIN

期刊论文

4Pi荧光超分辨显微术综述

郝翔, 李依明, 傅爽, 李旸晖, 许迎科, 匡翠方, 刘旭

期刊论文

对双层组件4D打印可逆性的初步研究

Amelia Yilin Lee, Jia An, Chee Kai Chu, Yi Zhang

期刊论文