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Synthesis,Characterization and DfT Calculation of a New Silver(I) Iodid Templated by Conjugated Cation:(ipq)_4Ag_4I_8

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Chinese Journal of Structural Chemistry 2006年第9期25卷 1148-1153页

作者： XIAO Guang-can Center of Analysis and Measurement Fuzhou University Fuzhou Fujian 350002 China

A silver iodide, （ipq）4Ag418 1, has been synthesized in the presence of ipq （ipq = N-（isopentyl）-quinolinium） acting as a structure-directing reagent （SDA）. Compound 1 crystallizes in the triclinic system, space group PT, with a = 9.850（2）, b = 11.564（2）, c = 16.111（3） ,A ,α = 104.64（3）, β = 105.73（3）, γ = 94.37（3）o, V= 1688.3（7） A^3, Z = 2, D,= 2.205 g/cm^3, f（000） = 1042, C28H33Ag2l4N2, Mr= 1120.90, μ（MoKa） = 4.836 mm^-1, the final R = 0.0363 and wR = 0.0761 for 5465 observed reflections with 1 〉 2σ（I）. 1 consists of uncoordinated structure-directing molecule and inorganic moiety tuned by organic SDA. Tetrameric Ag4I8^4- anion in 1 is composed of edgesharing AgI4 tetrahedra and AgI3 planar triangles. Electrostatic interaction between organic counter cations and inorgan!c moieties is present and contributes to the crystal packing. 1 was further characterized with IR, UV-Vis, elemental analysis and cyclic voltammetry. Based on the crystal structure data, quantum chemical calculation with Dfr method was used to reveal the electronic structure and optical property of 1.

关键词： coordination polymers template synthesis iodide quaternary ammonium

Single metal atom decorated photocatalysts:Progress and challenges

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Nano Research 2021年第4期14卷 934-944页

作者： Lei Zeng can Xue School of materials science and engineering Nanyang Technological University50 Nanyang avenueSingapore 639798Singapore

Photocatalysis has attracted intense attention due to its potential to solve the energy resource problem and environmental *** single metal atom decorated photocatalysts as a rising star become more and more popular because of the unique advantages of superior catalytic activities and ultrahigh atom utilization *** key function of single metal atom catalysts in photocatalytic reactions is boosting surface redox reactions by utilizing photogenerated charges,and has been verified by various spectroscopic and microscopic ***,the activities of the single metal atoms highly depend on the binding environment in the host photocatalyst that affect the adsorption and activation of reactants as well as the reaction energy ***,this mini review summarizes recent progress on single metal atom decorated photocatalysts,and discusses the roles of the single metal atom catalysts in different types of host photocatalysts including organic,carbon-based and inorganic *** remaining challenges and future perspectives on the stability and activities of single atom catalysts in photocatalytic processes are elaborated in the *** believe that this mini review will provide valuable overview on synthetic methods of different single atom photocatalysts for researchers towards future development of highly efficient photocatalysts.

关键词： photocatalysis solar fuels hydrogen generation CO_(2)reduction artificial photosynthesis solar energy conversion

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释“■(免)”

三峡大学学报（人文社会科学版） 2025年第1期47卷 108-115页

作者：程邦雄杨灿王斐三峡大学文学与传媒学院湖北宜昌43002 华中科技大学中国语言研究所湖北武汉430074 华中师范大学文学院湖北武汉430079

甲骨文“■”等形体,孙诒让最早在《契文举例·释文字》里,进行了分析讨论,正误参半。“■”等字,在卜辞里意义多是“分娩”,但是从文字角度看,应隶定为何字,学界讨论甚多,意见不一。结合传世文献与最新的出土文献,从“■”的构形、上... 详细信息

甲骨文“■”等形体,孙诒让最早在《契文举例·释文字》里,进行了分析讨论,正误参半。“■”等字,在卜辞里意义多是“分娩”,但是从文字角度看,应隶定为何字,学界讨论甚多,意见不一。结合传世文献与最新的出土文献,从“■”的构形、上下文语境、涉及的句式语法、语义搭配、字词关系等多角度观察、分析,“■”等甲骨文形体应隶释为“免”字,记录的是“分娩”义的{免},而不应该隶为“娩”字,以记录“分娩”义的{娩}。《说文》不收单字“免”,是遗漏,“分娩”义的“免”字非后出,《说文》收有含声符和义符“免”的合体字多例,并单独立有“儿部”,金文、战国(楚)简帛也有从“子”或从“儿(■)”的“免”字。郑珍释“免,子脱胞也。从二儿:上儿,母也;下儿,子也”,其说有据。

关键词： ■ 免 {免} 娩

OPTIMAL PROPORTIONAL REINSURANCE UNDER DEPENDENT RISKS

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Journal of Systems Science & Complexity 2012年第6期25卷 1171-1184页

作者： fengqing HU Kam C yuen Department of Mathematics and Center for financial Engineering Soochow University Department of Statistics and Actuarial Science University of Hong KongHong KongChina

This paper considers a correlated risk model with thinning-dependence structure. The au- thors investigate the optimal proportional reinsurance that maximizes the adjustment coefficient and the optimal proportional reinsurance under mean variance principle for the proposed model. The au- thors derive the optimal solutions and the numerical illustrations to show the impact of the dependence among the classes of business on the optimal reinsurance arrangements.

关键词： Adjustment coefficient mean-variance principle optimal proportional reinsurance thinning-dependence structure.

Surgical outcomes for unilateral superior oblique palsy in Chinese population: a retrospective study

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International Journal of Ophthalmology(English edition) 2015年第1期8卷 107-112页

作者： Gordon Shing Kin yau Victor Tak yau Tam Jacky Wai yip Lee Theo Tak Kwong Chan can yin fun yuen Department of Ophthalmology Caritas Medical Centre Department of Anatomy Faculty of MedicineUniversity of Hong Kong

AIM: To evaluate the outcome after surgery for unilateral superior oblique(SO) palsy in ***: The medical records of 39 patients that underwent surgery for unilateral SO palsy between January 2003 and December 2012 at Caritas Medical Centre, Hong Kong, were retrospectively reviewed. All surgeries were performed by a single surgeon. Pre-operative assessments for vertical deviation, cyclo-deviation, and Knapp’s classification were obtained to determine the nature and degree of surgical *** deviation was measured at 1wk; 1, 6mo and on last follow-up day post-operatively. Cyclo-deviation was measured on last follow-up day ***: During the 10 y period, 39 subjects were recruited. The most common etiology was congenital(94.9%). Knapp’s Type III(66.7%) and Type I(12.8%)classifications were the most common subtypes. To treat SO palsy, the most common surgical procedures were:isolated inferior oblique(IO) anteriorization(41.0%),isolated IO myectomy(10.3%), and isolated IO recession(10.3%). At 3.5 ±2.1y post-operatively, the vertical deviation was significantly reduced(15.1 ±6.2 PD versus0.5±1.4 PD, P ficant improvement in cyclo-deviation(P =0.5). Initial vertical deviation was correlated with cyclo-torsion(r =0.4, P =0.007). Those with over-correction had greater initial vertical deviation(19.4±7.2 PD versus 13.2±4.3 PD, P =0.003). After a single operation, 84.6% of subjects achieved a vertical deviation within ±3 PD.· CONCLUSION: The majority of subjects achieved corrected vertical deviation after a single surgery although there was no improvement in *** with over-correction of primary position deviation had greater preoperative vertical deviation and it may be related to simultaneous multiple muscle surgery.

关键词： superior oblique palsy vertical deviation surgery diplopia

All-parameters Rayleigh wave inversion

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Earthquake Engineering and Engineering Vibration 2021年第2期20卷 517-534页

作者： Xiao-Hui yang Ka-Veng yuen State Key Laboratory of Internet of Things for Smart City and Department of Civil and Environmental Engineering University of MacaoMacao 999078China

Since S-wave velocity of the subsurface is an important parameter in near surface applications,many studies have been conducted for its *** the various methods that use surface waves or body waves,Rayleigh wave inversion is the most *** practice,the densities and P-wave velocities of different layers are usually assumed to be known to avoid ill-posed problems,as they have less influence on the dispersion ***,improper assignment of these two groups of parameters leads to inaccurate estimation of the S-wave velocity *** order to address this problem,the all-parameters Rayleigh wave inversion strategy is proposed in which the S-wave velocities,layer thicknesses,densities and P-wave velocities of different layers are included as the unknown parameters for ***,the transitional Markov Chain Monte Carlo(TMCMC)algorithm is applied for the implementation of all-parameters Rayleigh wave *** simulated example and two real-test applications are demonstrated to verify the capability of the proposed method in the estimation of the S-wave velocity profile,the densities and the P-wave ***,it is verified that the proposed method achieved more accurate S-wave velocity profile estimation than the traditional approach.

关键词： all-parameters Rayleigh wave inversion Bayesian S-wave velocity profile TMCMC algorithm uncertainty quantification

Abnormal subchondral bone remodeling and its association with articular cartilage degradation in knees of type 2 diabetes patients

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Bone Research 2017年第4期5卷 305-316页

作者： yan Chen yong-can Huang Chun Hoi yan Kwong yuen Chiu Qingjun Wei Jingmin Zhao X Edward Guo frankie Leung William W Lu Department of Bone and Joint Surgery The First Affiliated HospitalGuangxi Medical UniversityChina Department of Orthopaedics and Traumatology The University of Hong KongHong Kong Bone Bioengineering Laboratory Department of Biomedical EngineeringColumbia UniversityNew YorkNYUSA Shenzhen Engineering Laboratory of Orthopaedic Regenerative Technologies Orthopaedic Research CenterPeking University Shenzhen HospitalShenzhenChina

Type 2 diabetes （T2D） is associated with systemic abnormal bone remodeling and bone loss. Meanwhile, abnormal subchondral bone remodeling induces cartilage degradation, resulting in osteoarthritis （OA）. Accordingly, we investigated alterations in subchondral bone remodeling, microstructure and strength in knees from T2D patients and their association with cartilage degradation. Tibial plateaus were collected from knee OA patients undergoing total knee arthroplasty and divided into non-diabetic （n---70） and diabetes （n = 51） groups. Tibial plateaus were also collected from cadaver donors （n = 20） and used as controls. Subchondral bone microstructure was assessed using micro-computed tomography. Bone strength was evaluated by micro-finite-element analysis. Cartilage degradation was estimated using histology. The expression of tartrate-resistant acidic phosphatase （TRAP）, osterix, and osteocalcin were calculated using immunohistochemistry. Osteoarthritis Research Society International （OARSI） scores of lateral tibial plateau did not differ between non-diabetic and diabetes groups, while higher OARSI scores on medial side were detected in diabetes group. Lower bone volume fraction and trabecular number and higher structure model index were found on both sides in diabetes group. These microstructural alterations translated into lower elastic modulus in diabetes group. Moreover, diabetes group had a larger number of TRAP~ osteoclasts and lower number of Osterix~ osteoprogenitors and Osteocalcin~ osteoblasts. T2D knees are characterized by abnormal subchondral bone remodeling and microstructural and mechanical impairments, which were associated with exacerbated cartilage degradation. In regions with intact cartilage the underlying bone still had abnormal remodeling in diabetes group, suggesting that abnormal bone remodeling may contribute to the early pathogenesis of T2D-associated knee OA.

关键词： Th Abnormal subchondral bone remodeling and its association with articular cartilage degradation in knees of type 2 diabetes patients

Another avian influenza A subtype jumping into human:this time is H7N4

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Science Bulletin 2018年第16期63卷 1025-1026页

作者： Kwok-yung yuen State Key Laboratory of Emerging Infectious Diseases Li Ka Shing Faculty of Medicine University of Hong Kong

Avian influenza viruses have been first known to jump the interspecies barrier and cause human infections since 1959[1].However,avian influenza was not considered a serious threat to public health until 1997,when the influenza A(H5N1)virus caused an outbreak in Hong Kong with 18 cases including six deaths[2].The A(H5N1)epidemic has never stopped despite poultry immu-

关键词：流行性感冒病毒种鸟子类型公共健康家禽免疫盒子流行病死亡

Calculation of high-temperature insulation parameters and heat transfer behaviors of multilayer insulation by inverse problems method

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Chinese Journal of Aeronautics 2014年第4期27卷 791-796页

作者： Huang can Zhang yue Key Laboratory of Aerospace Materials and Performance (Ministry of Education) School of Materials Science and Engineering Beihang University

In the present paper, a numerical model combining radiation and conduction for porous materials is developed based on the finite volume method. The model can be used to investigate high-temperature thermal insulations which are widely used in metallic thermal protection systems on reusable launch vehicles and high-temperature fuel cells. The effective thermal conductivities（ECTs） which are measured experimentally can hardly be used separately to analyze the heat transfer behaviors of conduction and radiation for high-temperature insulation. By fitting the effective thermal conductivities with experimental data, the equivalent radiation transmittance, absorptivity and reflectivity, as well as a linear function to describe the relationship between temperature and conductivity can be estimated by an inverse problems method. The deviation between the calculated and measured effective thermal conductivities is less than 4%. Using the material parameters so obtained for conduction and radiation, the heat transfer process in multilayer thermal insulation（MTI） is calculated and the deviation between the calculated and the measured transient temperatures at a certain depth in the multilayer thermal insulation is less than 6.5%.

关键词： Effective thermal conductivity fibrous insulation finite volume methodHeat transfer Multilayer thermal insulation Radiation