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The renaissance of oxo synthesis: heterogeneous Rh-catalyzed hydroformylation

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Science China Chemistry 2025年

作者： Tao yan zhi Cao State Key Laboratory of Coal Conversion Institute of Coal Chemistry Chinese Academy of Sciences University of Chinese Academy of Sciences National Energy Center for Coal to Clean Fuels Synfuels China Technology Co. Ltd.

Hydroformylation could convert olefins and syngas （mixture of H2and CO） into aldehydes with a great atomic *** transformation serves as one of the most prominent processes in modern chemical industry, as it provides over 10million tons of aldehydes as feedstock for our daily essential products such as plasticizers, paints, solvents, and pharmaceuticals. This process generally requires efficient yet robust catalyst to realize decent efficacy. Compared with metals such as Co, Ru, and Pd, rhodium （Rh）-based catalysts stand out due to its superior activity even under mild reaction conditions, and dominate over 70%of global hydroformylation processes.

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Influence of particle size on property of Ti-6Al-4V alloy prepared by high-velocity compaction

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Transactions of Nonferrous Metals Society of China 2013年第2期23卷 361-365页

作者：闫志巧陈峰蔡一湘尹健广州有色金属研究院粉末冶金研究所广州510650 中南大学粉末冶金国家重点实验室长沙410083

Three Ti-6Al-4V alloy powders with median diameters of 103, 66 and 44 pm, respectively, were pressed by high-velocity compaction （HVC） technology and then sintered in vacuum. The effects of particle sizes on forming as well as properties of sintered samples were investigated. The results show that fine powders are more difficult to press than coarse powders and its compact density is lower too. But the sintered density of fine powders is obviously higher than that of coarse powders. Compared with the powders with 103 and 66 ~un in diameter, the green density with 44 ~rn diameter powders is lower, which is 85.1% of theoretical density （TD） at an impact energy of 913 J. After sintering at 1300 ~C for 2,5 h, the sintered density of the compacts with 44 pm diameter powders is the highest, and reaches 98.2% of TD. Moreover, the sintered sample with 44 pan in diameter has the highest hardness and compressive strength, which are HV 354 and 1265 MPa, respectively.

关键词： Ti6Al4V high-velocity compaction (HVC) green density sintering

激光光凝对视网膜颞上分支静脉阻塞视网膜功能影响定量研究

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中国实用眼科杂志 2013年第12期31卷 1562-1565页

作者：陶相宜郭淑玲乔志艳董志军承德医学院附属医院眼科河北067000

目的观察视网膜颞上分支静脉阻塞合并黄斑水肿患者激光光凝前后视网膜功能变化。方法对2009年1月至2010年2月在承德医学院附属医院眼科就诊的32例（32只眼）视网膜颞上分支静脉阻塞合并黄斑水肿患者实施激光光凝治疗，对其光凝术前与术... 详细信息

目的观察视网膜颞上分支静脉阻塞合并黄斑水肿患者激光光凝前后视网膜功能变化。方法对2009年1月至2010年2月在承德医学院附属医院眼科就诊的32例（32只眼）视网膜颞上分支静脉阻塞合并黄斑水肿患者实施激光光凝治疗，对其光凝术前与术后1个月、3个月和6个月的视野及多焦视网膜电图进行定量研究。结果中心凹、中心10°的视野平均光敏感度在光凝前后差异均无统计学意义（P〉0．05）；旁中心10°-30°范围的视野光敏感度光凝后1个月比光凝前下降（P〈0．01），光凝后3个月、6个月时与光凝前差异比较无统计学意义（P〉0．05）。颞上象限视网膜平均光敏感度光凝后1个月、3个月下降，与光凝前差异比较均存在统计学意义（P〈0．05），光凝后6个月与光凝前比较差异无统计学意义（P〉0．05）。颞上象限视网膜P，波振幅密度值在治疗后1个月与光凝治疗前相比下降，差异存在统计学意义（P〈0．05），光凝后3个月、6个月与光凝前比较差异无统计学意义（P〉0．05）。结论激光光凝治疗视网膜颞上分支静脉阻塞合并黄斑水肿可以有效保护中心视功能，但对光凝区域视网膜功能的影响是一个渐进的、损伤再修复的过程。

关键词：视网膜颞上分支静脉阻塞激光光凝视野多焦视网膜电图

Repetitive transcranial magnetic stimulation in Alzheimer’s disease:effects on neural and synaptic rehabilitation

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Neural Regeneration Research 2025年第2期20卷 326-342页

作者： Yi Ji Chaoyi yang Xuerui Pang Yibing yan Yue Wu zhi Geng Wenjie Hu Panpan Hu Xingqi Wu Kai Wang Department of Neurology The First Affiliated Hospital of Anhui Medical UniversityHefeiAnhui ProvinceChina Anhui Province Key Laboratory of Cognition and Neuropsychiatric Disorders HefeiAnhui ProvinceChina Collaborative Innovation Center of Neuropsychiatric Disorders and Mental Health HefeiAnhui ProvinceChina Institute of Artificial Intelligence Hefei Comprehensive National Science CenterHefeiAnhui ProvinceChina Department of Psychology and Sleep Medicine The Second Affiliated Hospital of Anhui Medical UniversityHefeiAnhui ProvinceChina

Alzheimer’s disease is a neurodegenerative disease resulting from deficits in synaptic transmission and *** Alzheimer’s disease brain tends to be hyperexcitable and hypersynchronized,thereby causing neurodegeneration and ultimately disrupting the operational abilities in daily life,leaving patients *** transcranial magnetic stimulation is a cost-effective,neuro-modulatory technique used for multiple neurological *** the past two decades,it has been widely used to predict cognitive decline;identify pathophysiological markers;promote neuroplasticity;and assess brain excitability,plasticity,and *** has also been applied to patients with dementia,because it can yield facilitatory effects on cognition and promote brain recovery after a neurological ***,its therapeutic effectiveness at the molecular and synaptic levels has not been elucidated because of a limited number of *** study aimed to characterize the neurobiological changes following repetitive transcranial magnetic stimulation treatment,evaluate its effects on synaptic plasticity,and identify the associated *** review essentially focuses on changes in the pathology,amyloidogenesis,and clearance pathways,given that amyloid deposition is a major hypothesis in the pathogenesis of Alzheimer’s *** mechanisms associated with repetitive transcranial magnetic stimulation procedures and different pathways mediating gene transcription,which are closely related to the neural regeneration process,are also ***,we discuss the outcomes of animal studies in which neuroplasticity is modulated and assessed at the structural and functional levels by using repetitive transcranial magnetic stimulation,with the aim to highlight future directions for better clinical translations.

关键词： Alzheimer’s disease amyloid deposition apoptotic mechanisms biomarker neural regeneration neurodegeneration repetitive transcranial magnetic stimulation synaptic plasticity

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甲醛对DNA损伤的彗星实验研究

实验生物学报 2004年第4期37卷 262-268页

作者：李睿鲁志松乔琰姚汉超于非非杨旭华中师范大学生命科学学院武汉430079

甲醛是一种遗传毒性物质。国内外学者的大量研究证实,甲醛可以引起DNA-DNA、DNA-蛋白质分子交联,但对于甲醛是否能够引起DNA 分子的断裂,学界却存在分歧。本实验以颊黏膜细胞作为实验材料,通过彗星实验对甲醛的遗传毒性——尤其是DNA ... 详细信息

甲醛是一种遗传毒性物质。国内外学者的大量研究证实,甲醛可以引起DNA-DNA、DNA-蛋白质分子交联,但对于甲醛是否能够引起DNA 分子的断裂,学界却存在分歧。本实验以颊黏膜细胞作为实验材料,通过彗星实验对甲醛的遗传毒性——尤其是DNA 分子断裂作用进行了系统的研究。结果显示甲醛在较低浓度(5μmol/L,7.5μmol/L,10μmol/L)时具有断裂作用,在较高浓度(15μmol/L,30μmol/L,50μmol/L)时则具有交联作用。根据本实验的结果,本文还首次论证了甲醛断裂作用的断裂峰值(7.5μmol/L)。

关键词：甲醛 DNA损伤彗星实验断裂峰值颊黏膜细胞遗传毒性

视网膜颞上分支静脉阻塞黄斑水肿激光光凝前后多焦视网膜电图改变

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中国实用眼科杂志 2010年第9期28卷 962-965页

作者：陶相宜石晶郭淑玲董志军王跃丽乔志艳张铁民最德医学院附属医院眼科河北承德067000

目的应用多焦视网膜电图（muhifocalelectroretinogram，mfERG）观察激光光凝对于视网膜颞上分支静脉阻塞所致黄斑水肿的疗效。方法对视网膜颞上分支静脉阻塞合并黄斑水肿的病例，进行多焦视网膜电图检查，分析其一阶反应（FOK），N1、P... 详细信息

目的应用多焦视网膜电图（muhifocalelectroretinogram，mfERG）观察激光光凝对于视网膜颞上分支静脉阻塞所致黄斑水肿的疗效。方法对视网膜颞上分支静脉阻塞合并黄斑水肿的病例，进行多焦视网膜电图检查，分析其一阶反应（FOK），N1、P1波振幅密度值及其潜伏期。结果中心凹处P1波振幅密度在光凝治疗后3个月开始恢复，治疗后6个月明显升高，与光凝治疗前相比差异具有统计学意义（P〈0．05、P〈0．01）；2环P1波潜伏期在光凝治疗后3个月比治疗前有所缩短（P〈0．05），到治疗后6个月时改善更加明显，与治疗前相比差异具有统计学意义（P〈0．01）。颞上象限视网膜P1波振幅密度值在治疗后一个月与治疗前相比下降，其差异具有统计学意义（P〈0．05）。结论激光光凝可以有效治疗视网膜分支静脉阻塞所致的黄斑水肿，多焦视网膜电图在疗效评估方面具有重要价值，P1波振幅密度和P1波潜伏期可作为评价疗效的敏感指标。

关键词：视网膜分支静脉阻塞黄斑水肿激光光凝多焦视网膜电图

Electro-optic tuning in ferroelectric capacitor with photonic crystal nanobeam cavity

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Science China(Information Sciences) 2025年

作者： Tongtong WANG Yong ZHANG Danyang YAO zhi JIANG Dongxin TAN Jie WEN Qiyu yanG Xuetao GAN yan LIU Yue HAO Genquan HAN State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology School of MicroelectronicsXidian University Key Laboratory of Light Field Manipulation and Information Acquisition Ministry of Industry and Information TechnologyShaanxi Key Laboratory of Optical Information Technology School of Physical Science and TechnologyNorthwestern Polytechnical University Hangzhou Institute of Technology Xidian University

Silicon photonics has provided a platform for the convergency of photonic devices and electronic circuits, facilitating the development of optical telecommunications and optical interconnects on chip[1]. As the basic building block of optical communication systems, electro-optic tuning is expected to be more compact, high bandwidth, energy efficient, and allow for CMOS-compatible fabrication in the future[2]. Resonator-based electro-optic tuning has attracted more and more interest due to the small footprint, enhanced light-matter interactions and high energy efficiency. Compared with microring and microdisk resonators, photonic crystal nanobeam cavities （PCNBCs） realize higher quality factors, stronger light-matter interactions, ultrasmall mode volume and a much larger free spectral range （FSR）[3].

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视网膜颞上分支静脉阻塞合并黄斑水肿的多焦视网膜电图特征

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眼科新进展 2010年第12期30卷 1173-1176页

作者：陶相宜郭淑玲石晶乔志艳王跃丽张铁民承德医学院附属医院眼科河北省承德市067000

目的分析视网膜颞上分支静脉阻塞合并黄斑水肿的多焦视网膜电图各参数的特征。方法对视网膜颞上分支静脉阻塞合并黄斑水肿的病例进行多焦视网膜电图检查,分析其一阶反应,比较不同程度黄斑水肿、患眼与对侧眼N1、P1波振幅密度及潜伏期的... 详细信息

目的分析视网膜颞上分支静脉阻塞合并黄斑水肿的多焦视网膜电图各参数的特征。方法对视网膜颞上分支静脉阻塞合并黄斑水肿的病例进行多焦视网膜电图检查,分析其一阶反应,比较不同程度黄斑水肿、患眼与对侧眼N1、P1波振幅密度及潜伏期的差异。结果局限性黄斑水肿组1环N1波振幅密度和潜伏期分别为：（25.17±2.45）***-2、（20.48±5.02）ms,黄斑囊样水肿组分别为（18.26±2.20）***-2、（24.07±3.49）ms,2组间比较差异均有统计学意义（分别为P=0.040、P=0.035）;P1波振幅密度在局限性黄斑水肿组为（63.26±22.02）***-2,弥漫性黄斑水肿组为（42.03±16.25）***-1,黄斑囊样水肿组为（41.71±15.24）***-2,3组间差异均有统计学意义（均为P〈0.05）。患眼1环、2环及3~5环N1、P1波振幅密度及N1波潜伏期与对侧眼差异有统计学意义（P〈0.05）;2环P1波潜伏期与对侧眼差异存在统计学意义（P〈0.05）。患眼颞上象限N1波和P1波振幅密度分别为（6.24±3.18）***-2、（15.53±7.52）***-2,N1波和P1波潜伏期分别为（22.24±1.93）ms、（40.37±3.56）ms,与对侧眼比较差异均有统计学意义（均为P〈0.05）。结论视网膜分支静脉阻塞合并黄斑水肿在多焦视网膜电图上表现以中心凹处的改变最明显;P1波振幅密度及N1波潜伏期可做为敏感评价指标。

关键词：视网膜分支静脉阻塞黄斑水肿多焦视网膜电图

The effect of single-horn glaze ice on the vortex structures in the wake of a horizontal axis wind turbine

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Acta Mechanica Sinica 2015年第1期31卷 62-72页

作者： Zhe-yan Jin qiao-Tian Dong zhi-Gang yang School of Aerospace Engineering and Applied Mechanics Tongji University School of Automotive Studies Tongji University Shanghai Automotive Wind Tunnel Center

The present study experimentally investigated the effect of a simulated single-horn glaze ice accreted on ro- tor blades on the vortex structures in the wake of a hori- zontal axis wind turbine by using the stereoscopic particle image velocimetry （Stereo-PIV） technique. During the ex- periments, four horizontal axis wind turbine models were tested, and both ＂free-run＂ and ＂phase-locked＂ Stereo-PIV measurements were carried out. Based on the ＂free-run＂ measurements, it was found that because of the simulated single-horn glaze ice, the shape, vorticity, and trajectory of tip vortices were changed significantly, and less kinetic en- ergy of the airflow could be harvested by the wind turbine. In addition, the ＂phase-locked＂ results indicated that the pres- ence of simulated single-horn glaze ice resulted in a dramatic reduction of the vorticity peak of the tip vortices. Moreover, as the length of the glaze ice increased, both root and tip vortex gaps were found to increase accordingly.

关键词： Stereo-PIV Single-horn glaze ice. Tip vorticesRoot vortices Wind turbine icing