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New puckered pentagonal bilayer ice structure confined between hydrophobic plates

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New puckered pentagonal bilayer ice structure confined betwe...

Laser image refractive index sensor based on the combination of a coreless optical fiber and a digital camera

中国化学会第十二届全国量子化学会议

作者： Wei-Duo Zhu Min Jia Wen-Hui Zhao lan-feng yuan University of Science and Technology of China

Molecular dynamic simulations were performed to study the phase behavior of water confined between two smooth hydrophobic walls at lateral pressure is 1.0 GPa for temperature 230K≤T≤350K and plate separations of 0.80≤d≤1.00 *** observe three crystalline structures,named flat rhombic bilayer ice(f RBI),pucker pentagonal bilayer ice(p PBI)and flat hexagonal-rhombic trilayer ice(f HRTI)respectively,including p PBI is first ever *** novel structure named as the puckered pentagonal bilayer ice(p PBI)is obtained under 1 GPa load at wall separation of *** layer of oxygen atoms are not on the same plane,splitting into two *** top view of monolayer,the water form hexagonal rings,and each hexagonal rings composed with four pentagonal *** unit cell composed with three hexagons,which contains 36 water *** the top down,divided into four layers and each layer of the oxygen atoms ratio is 10:8:8:*** the structure have a first-order phase transitions between liquid and solid.

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Optoelectronics Letters 2025年第2期 65-68页

作者： GUO Jingzhong lan feng CHEN Xiang LIU Haifeng Xi'an Institute of Space Radio Technology Key Laboratory of Optoelectronic Sensor and Sensing Network Technology College of Electronic Information and Optical Engineering Nankai University

As a laser passes through a scattering medium,the light interacts with the irregular reflections within the medium,resulting in light scattering and the formation of *** this paper,an image sensor based on the combination of a coreless optical fiber and a digital camera is proposed for liquid refractive index sensing *** coreless fiber is used as a sensing unit,and the change in the speckle pattern is measured using the digital correlation method to detect the magnitude of the liquid's refractive *** experimental results indicate that the laser image sensing technique is capable of effectively distinguishing liquid samples with refractive indices ranging from 1.332 8 to1.390 8,with a sensing sensitivity of-1.306 ***,the laser image sensing technique,with its advantages of high experimental reproducibility,simple system design,remote over-control,holds great research significance and potential application in laser communication and sensor integration.

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Mainchain conformation ordering self-assembly tailored room temperature phosphorescence emission

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Science China Chemistry 2025年第01期 329-336页

作者： Yuzhu Li Yumeng Gao feng Tian Yu Wang yuan Yao Shaoliang Lin Xiang Ma Binbin Xu Shanghai Key Laboratory of Advanced Polymeric Materials Key Laboratory for Ultrafine Materials of Ministry of Education School of Materials Science and Engineering East China University of Science and Technology Shanghai Synchrotron Radiation Facility Shanghai Advanced Research Institute Chinese Academy of Sciences Key Laboratory for Advance Materials and Feringa Noble Prize Scientist Joint Research Centre Frontiers Science for Materiobiology and Dynamic Chemistry School of Chemistry and Molecular Engineering East China University of Science & Technology

Developing organic room-temperature phosphorescence （RTP） materials with a wide range of tunable-emission is significant in expanding the applications of RTP ***,we rationally designed amphiphilic alternating copolymers poly(1,2-bis（4-alkoxyphenyl）ethane-1,2-dione-alt-（ethylene glycol）x)(P（Bz-alt-EGx）) that combined the advantage of alternating benzil and EGxskeleton,and tunable mainchain *** a mainchain conformation ordering assembly （COA） process,P（Bz-alt-EGx） self-assembled into well-defined platelets,and such assemblies emitted blue RTP at ca.425 nm due to the ordered folded-chain conformation and confined *** contrast,traditional self-assembly （TA） of P（Bz-alt-EGx） obtained less ordered aggregates,such as asymmetric worms,vesicles,and rod-like *** resultant less ordered aggregates exhibited yellow-green RTP at ca.550 *** wide-tuning RTP emission in solution （between blue and yellow-green,over125 nm） is realized using the P（Bz-alt-EGx） alternating copolymers under the treatment of different self-assembly *** study uncovers a new strategy to tailor the RTP emission through different self-assembly pathways and holds great promise for the fabrication of advanced optical materials.

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Exploration of Gas-Dependent Self-Adaptive Reconstruction Behavior of Cu₂O for Electrochemical CO₂ Conversion to Multi-Carbon Products

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NANO-MICRO LETTERS 2025年第1期17卷 1-17页

作者： Zhang, Chaoran Gu, Yichuan Jiang, Qu Sheng, Ziyang feng, Ruohan Wang, Sihong Zhang, Haoyue Xu, Qianqing yuan, Zijian Song, Fang Shanghai Jiao Tong Univ Sch Mat Sci & Engn State Key Lab Met Matrix Composites Shanghai 200240 Peoples R China

Structural reconstruction of electrocatalysts plays a pivotal role in catalytic performances for CO2 reduction reaction (CO2RR), whereas the behavior is by far superficially understood. Here, we report that CO2 accessibility results in a universal self-adaptive structural reconstruction from Cu2O to Cu@CuxO composites, ending with feeding gas-dependent microstructures and catalytic performances. The CO2-rich atmosphere favors reconstruction for CO2RR, whereas the CO2-deficient one prefers that for hydrogen evolution reaction. With the assistance of spectroscopic analysis and theoretical calculations, we uncover a CO2-induced passivation behavior by identifying a reduction-resistant but catalytic active Cu(I)-rich amorphous layer stabilized by *CO intermediates. Additionally, we find extra CO production is indispensable for the robust production of C2H4. An inverse correlation between durability and FECO/FEC2H4 is disclosed, suggesting that the self-stabilization process involving the absorption of *CO intermediates on Cu(I) sites is essential for durable electrolysis. Guided by this insight, we design hollow Cu2O nanospheres for durable and selective CO2RR electrolysis in producing C2H4. Our work recognizes the previously overlooked passivation reconstruction and self-stabilizing behavior and highlights the critical role of the local atmosphere in modulating reconstruction and catalytic processes.

关键词： CO2 reduction reaction Electrocatalysts Cu2O Reconstruction Self-adaptive electrocatalysis

Recent progress on photoactive nonprecious transition-metal complexes

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Science China Chemistry 2025年第1期 46-95页

作者： Zhong-Liang Gong Hong-Jie Zhang Yan Cheng Jianxun Liu Yuhan Ai Yaqin Li Zhihui feng Qiong Zhang Shaolong Gong Yong Chen Chang-Jiang Yao yuan-yuan Zhu Liang-Jin Xu Yu-Wu Zhong CAS Key Laboratory of Photochemistry Institute of Chemistry Chinese Academy of Sciences State Key Laboratory of Structural Cemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences School of Chemistry and Chemical Engineering Anhui Key Laboratory of Advanced Catalytic Materials and Reaction EngineeringHefei University of Technology State Key Laboratory of Explosion Science and Safety Protection School of Mechatronical Engineering Beijing Institute of Technology College of Chemistry and Molecular Sciences Hubei Key Lab on Organic and Polymeric Optoelectronic Materials Wuhan University School of Chemistry and Chemical Engineering Anhui University Key Laboratory of Photochemical Conversion and Optoelectronic Materials & CAS-HKU Joint Laboratory on New Materials Technical Institute of Physics and Chemistry Chinese Academy of Sciences

Photoactive complexes of nonprecious transition metals, mainly including those in the first-row and partially the second-row of the Periodic table of elements, have received increasing attention in view of their low cost and long-term sustainability. They are recognized as promising alternatives to noble transition metal complex congeners that have been extensively studied in optoelectronic devices, artificial photosynthesis, photocatalysis, biodiagnostics, and therapeutics, etc. This review is devoted to a comprehensive summary on the classical and recent advances on photoactive nonprecious transition metal complexes, including photoactive Zr, V, Cr, Mo, and W complexes, Mn complexes and hybrids, Fe, Co, Ni, and Cu complexes, and Zn and Cd complexes and hybrids. A particular focus is given on the molecular design, modulation of photophysical and photochemical properties, and applications of the representative and lately-developed nonprecious metal complexes. In addition, a perspective on the future development in this field is provided at the end of this review.

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药事服务费的内涵及测算方法探析

中国卫生经济 2010年第7期29卷 54-55页

作者：郭文博张岚李元峰郑小华四川省医学科学院四川省人民医院成都610072

文章首先对药事服务费的内涵进行了界定,并对药事服务费的测算方案进行了回顾,最后提出了利用损失叠加法和成本法建立模型测算药事服务费的基本思路。

关键词：药事服务费内涵测算方法

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Deciphering nucleic acid modifications by chemical derivatization-mass spectrometry analysis

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Chinese Chemical Letters 2019年第1期30卷 1-6页

作者： Meng-Dan lan Bi-feng yuan Yu-Qi feng Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education) Department of Chemistry Wuhan University

Now increasing chemical modifications are discovered on genomic DNA and RNA. Up to date, more than150 chemical modifications are identified in nucleic acids. These chemical modifications do not change the sequence of DNA and RNA, but alter their structures and biochemical properties, and eventually control or regulate the spatial and temporal expression of genes. Elucidation of the functional roles of these modifications is vital to our understanding of living organisms. However, the modifications in DNA and RNA generally have extremely low abundance in vivo. Therefore, sensitive and specific detection methods are essential to decipher the functional roles of these modifications. Chemical derivatization in combination with mass spectrometry(MS) analysis has been proved to be a promising strategy to efficiently analyze these modifications in DNA and RNA. In the last several years, many chemical derivatization-MS-based analytical methods were established for the sensitive and effective analysis of nucleic acid modifications. In this review, we summarize the recent advances for deciphering modifications in DNA and RNA by chemical derivatization-MS analysis. We hope this review can stimulate the future studies of DNA and RNA modifications.

关键词： Mass spectrometry analysis Chemical derivatization DNA modification RNA modification

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Multiple ectopic goiter in the retroperitoneum,abdominal wall,liver,and diaphragm:A case report and review of literature

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World Journal of Clinical Cases 2020年第23期8卷 6172-6180页

作者： lan-Hui Qin feng-Yi He Jin-yuan Liao Department of Radiology Guangxi Medical UniversityNanning 530021Guangxi Zhuang Autonomous RegionChina Department of Radiology The First Affiliated Hospital of Guangxi Medical UniversityNanning 530021Guangxi Zhuang Autonomous RegionChina

BACKGROUND Ectopic thyroid is a rare developmental disorder,typically found in lingual areas,and most distantly in the *** ectopia in multiple regions is extremely *** date,there are no reports of ectopic goiter in four regions of the abdominal cavity in a single *** SUMMARY We present a case of thyroid ectopia in four areas of the abdomen,comprising normal orthotopic thyroid tissue.A 36-year-old woman,who underwent ovarian teratoma resection 10 years previously due to symptomatic ovarian teratoma,was referred to our hospital for treatment of an incidental hepatic *** resonance imaging and computed tomography(CT)of the abdomen showed a heterogeneously enhanced lobulated lesion in the sixth and seventh hepatic segment adjacent to the *** mass was surgically excised,and histologic examination determined an ectopic nodular *** the one-year follow-up,the abdominal CT scan,whole-body radionuclide I131 examination,and abdominal wall biopsy showed similar lesions in the left renal fascia and anterior abdominal *** Multiple para-ectopic thyroid is often misdiagnosed,owing to its extremely rare incidence and non-specific clinical manifestations and imaging features.A combination of multiple examinations is necessary for diagnostic accuracy.

关键词： Ectopic thyroid Magnetic resonance imaging Computed tomography 99mTc sodium pertechnetate scintigraphy Case report

Complete response of gallbladder cancer treated with gemcitabine and cisplatin chemotherapy combined with durvalumab:A case report and review of literature

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World Journal of Gastrointestinal Oncology 2025年第1期17卷 226-232页

作者： Kai Chen Xu feng yuan Shi Xin-Lin Li Zheng-Rong Shi Xiang lan Department of Hepatobiliary Surgery The First Affiliated Hospital of Chongqing Medical UniversityChongqing 400016China

BACKGROUND Gallbladder cancer(GBC)is the most common and aggressive subtype of biliary tract cancer(BTC)and has a poor prognosis.A newly developed regimen of gemcitabine,cisplatin,and durvalumab shows promise for the treatment of advanced ***,the efficacy of this treatment for GBC remains *** SUMMARY In this report,we present a case in which the triple-drug regimen exhibited marked effectiveness in treating locally advanced GBC,thus leading to a long-term survival benefit.A 68-year-old man was diagnosed with locally advanced GBC,which rendered him ineligible for curative *** three cycles of therapy,a partial response was *** one year of combined therapy,a clinical complete response was successfully *** maintenance therapy with durvalumab monotherapy resulted in a disease-free survival of 9 months for the *** patient experienced tolerable toxicities of reversible grade 2 nausea and *** adverse events were observed in the patient throughout the entirety of the *** The combination of gemcitabine and cisplatin chemotherapy with durvalumab was proven to be an effective treatment approach for advanced GBC,with manageable adverse *** research is warranted to substantiate the effectiveness of the combined regimen in the context of GBC.

关键词： Gallbladder cancer Chemotherapy Immunotherapy Durvalumab Complete response Case report