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Synthesis of tetracycline analogs and their bone affinities

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Chinese Chemical Letters 2008年第1期19卷 19-22页

作者： Wen Cai huang Hu Zheng ling ling Weng School of Chemical Engineering Sichuan University Chengdu 610065 China West China School of Pharmacy Sichuan University Chengdu 610041 China

Tetracycline analogs were designed and synthesized and their bone affinities were tested on hydroxyapatite. The results showed that the carbonyl-amide-enol structure in A ring and phenol-ketone structure in BCD ring may be responsible for tetracycline＇s high bone affinity and either A ring or BCD ring has a planar conformation is essential. 2007 ling ling Weng. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.

关键词： Tetracycline Analogs Bone affinities Hydroxyapatite

Deciphering the role of ultra-low-loaded rhodium in NiFe-MIL-53 for superior oxygen evolution reaction

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Journal of Energy Chemistry 2025年第1期100卷 77-86页

作者： Jinzhi Jia Jinhua Zhang Kailu Guo Lanyue Zhang Gening Du Hao You Junfeng huang Mudong Tu Hua Li Yong Peng Wei Dou Cailing Xu State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering School of Materials and Energy Lanzhou University College of Chemistry and Chemical Engineering Luoyang Normal University

Designing highly active and stable electrocatalysts of oxygen evolution reaction （OER） is one of the crucial *** this study,a novel OER electrocatalyst,NiFe-MIL-53 modified with ultra-low rhodium（Rh@NiFe-MIL-53）,is successfully prepared via the hydrothermal ***-situ Raman spectroscopy and electrochemical impedance spectroscopy reveal that the doped Rh accelerates the phase transformation of NiFe-MIL-53 and the in-situ formed Rh@NiFeOOH is the actual active *** importantly,the enhanced reversibility of electrochemical reconstruction between NiFeOOH and NiFe（OH）2after doping Rh is beneficial for improving the electrochemical stability of the catalyst.X-ray photoelectron spectroscopy spectra show the strong electronic interaction between single-atom Rh and Ni/Fe in Rh@***,theoretical calculations confirm that the integration of single-atom Rh into the NiFeOOH successfully reduces the band gap,regulates the d-band center （εd）,accelerates the charge transfer,and optimizes the adsorption behavior of oxygen-containing intermediates,thereby lowering the energy barrier of rate-determining ***,the optimized Rh@NiFe-MIL-53 exhibits excellent OER activity （240 mV） with a small Tafel slope of 48.2 mV dec-1and long-term durability (over1270 h at 10 m A cm-2and 110 h at 200 mA cm-2).This work presents a new perspective on designing highly efficient OER electrocatalysts.

关键词： X ray photoelectron spectroscopy

Is an accessory nipple associated with an intrapancreatic accessory spleen?

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Hepatobiliary & Pancreatic Diseases International 2019年第6期18卷 596-597页

作者： Hai-Tao huang Qi ling Department of Surgery the First Affiliated HospitalZhejiang University School of MedicineHangzhou 310003China Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases the First Affiliated HospitalZhejiang University School of MedicineHangzhou 310003China

Intrapancreatic accessory spleen(IPAS)is a rare differential diagnosis of a solitary hypervascular *** is not uncommon to misdiagnose IPAS as pancreatic tumors since no specific imaging has been developed for the differential *** described a rare case of a male patient with a unilateral accessory nipple and a solitary hypervascular lesion in the *** patient underwent a distal pancreaticosplenectomy,and IPAS was finally diagnosed.

关键词： spleen diagnosis accessory

Research Progress of Metal-Organic Frameworks Based on Aromatic Polycarboxylic Acid

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Chinese Journal of Chemistry 2016年第2期34卷 143-156页

作者： ling Li Xinyu Cao Rudan huang Key Laboratory of Cluster Science of Ministry of Education School of Chemistry Beijing Institute of Technology Beijing 100081 China

Metal-organic frameworks （MOFs） have attracted tremendous attention due to their fascinating structure types and extensive application prospect in many fields. In the process of synthesis, aromatic polycarboxylic acid as ligand plays an important role in constructing functional MOFs. In this review, we have summarized the research progress on the synthesis and structures analysis of MOFs based on aromatic polycarboxylic acids as well as their potential applications in magnetism, gas adsorption, separation, photodegradation, catalysis and emission.

关键词： metal-organic frameworks synthesis design aromatic polycarboxylic acid research progress

A Remark on Strong Law of Large Numbers for Weighted U-Statistics

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Acta Mathematica Sinica,English Series 2014年第9期30卷 1595-1605页

作者： Hyung-Tae HA Mei ling huang Department of Applied Statistics Gachon University Department of Mathematics and Statistics Brock University

Let （X, Xn; n≥ 1} be a sequence of i.i.d, random variables with values in a measurable space （S,8） such that E｜h（X1, X2,..., Xm）｜〈 ∞, where h is a measurable symmetric function from Sm into R = （-∞, ∞）. Let {wn,i1,i2 im ; 1 ≤ i1 〈 i2 〈 …… 〈im 〈 n, n ≥ m} be a matrix array of real numbers. Motivated by a result of Choi and Sung （1987）, in this note we are concerned with establishing a strong law of large numbers for weighted U-statistics with kernel h of degree m. We show that whenever SUP n≥m max1〈i1〈i2〈…〈im≤｜wn i1,i2 i,im｜〈∞, where 0 = Eh（X1, X2,..., Xm）. The proof of this result is based on a new general result on complete convergence, which is a fundamental tool, for array of real-valued random variables under some mild conditions.

关键词： Strong law of large numbers weighted U-statistics complete convergence

Experimental study of wind loads on gable roofs of low-rise buildings with overhangs

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Frontiers of Structural and Civil Engineering 2018年第3期12卷 300-317页

作者： Peng huang ling TAO Ming GU Yong QUAN i university Shanghai 200092China

Gable roofs with overhangs （eaves） are the common constructions of low-rise buildings on the southeastern coast of China, and they were vulnerable to typhoons from experience. The wind pressure distributions on gable roofs of low-rise buildings are investigated by a series of wind tunnel tests which consist of 99 test cases with various roof pitches, height-depth ratios and width-depth ratios. The block pressure coefficients and worst negative （block） pressure coefficients on different roof regions of low-rise buildings are proposed for the main structure and building envelope, respectively. The effects of roof pitch, height-depth ratio, and width-depth ratio on the pressure coefficients of each region are analyzed in detail. In addition, the pressure coefficients on the roofs for the main structure and building envelope are fitted according to roof pitch, height-depth ratio and width-depth ratio of the low-rise building. Meanwhile, the rationality of the fitting formulas is verified by comparing the fitting results with the codes of different countries. Lastly, the block pressure coefficients and worst negative pressure coefficients are recommended to guide the design of low-rise buildings in typhoon area and act as references for the future＇s modification of wind load codes.

关键词： low-rise building gable roof wind loads wind tunnel test block pressure coefficient load code

Asymmetric Polymerization of N-Vinylcarbazole with Optically Active Anionic Initiators

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Chinese Journal of Polymer Science 2015年第11期33卷 1618-1624页

作者： Wei Hu 曹靖 Yi-ling huang Sai Liang Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education College of ChemistryXiangtan University

The anionic polymerization of N-vinylcarbazole（NVC） by using optically active anionic initiators such as the lithium salts of（S）-1-（9H-fluoren-2-yl）-4-isopropyl-4,5-dihydrooxazole（（S）-1-FIDH） and（S）-2-（9H-fluoren-2-yl）-4-isopropyl-4,5-dihydrooxazole（（S）-2-FIDH） and complexes of（-）-Sparteine with n-butylithium（n-Bu Li-（-）-Sp） or fluorenyl lithium（FILi-（-）-Sp） was achieved. The yield and specific rotation of poly（N-vinylcarbazole）s（poly（NVC）s） were considerably affected by the molar ratio of（S）-FIDH to NVC. The highest yield and specific rotation were obtained with Li-（S）-1-FIDH as an initiator, with a molar ratio of monomer and initiator [M]/[I] = 10/1. The effects of the chiral initiators, type of solvent and the polymerization temperature were investigated. The obtained optical activity of polymers was attributed to asymmetric induction of the chiral initiators.

关键词： Helical polymer Anionic polymerization Chiral carbon anionic initiator N-vinylcarbazole

Solar flare forecasting based on a Fusion Model

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Earth and Planetary Physics 2025年第1期9卷 171-181页

作者： YiYang Li ShiYong huang SiBo Xu ZhiGang Yuan Kui Jiang QiYang Xiong RenTong Lin School of Earth and Space Science Technology Hubei Luojia LaboratoryWuhan UniversityWuhan 430072China

Solar flare prediction is an important subject in the field of space *** learning technology has greatly promoted the development of this *** this study,we propose a novel solar flare forecasting model integrating Deep Residual Network(ResNet)and Support Vector Machine(SVM)for both≥C-class(C,M,and X classes)and≥M-class(M and X classes)*** collected samples of magnetograms from May 1,2010 to September 13,2018 from Space-weather Helioseismic and Magnetic Imager(HMI)Active Region Patches and then used a cross-validation method to obtain seven independent data *** then utilized five metrics to evaluate our fusion model,based on intermediate-output extracted by ResNet and SVM using the Gaussian kernel *** results show that the primary metric true skill statistics(TSS)achieves a value of 0.708±0.027 for≥C-class prediction,and of 0.758±0.042 for≥M-class prediction;these values indicate that our approach performs significantly better than those of previous *** metrics of our fusion model’s performance on the seven datasets indicate that the model is quite stable and robust,suggesting that fusion models that integrate an excellent baseline network with SVM can achieve improved performance in solar flare ***,we also discuss the performance impact of architectural innovation in our fusion model.

关键词： solar flare pace weather deep learning Fusion Model

A continuous-time formulation for refinery production scheduling problems involving operational transitions in mode switching

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Chinese Journal of Chemical Engineering 2016年第8期24卷 1020-1031页

作者： Lei Shi Yongheng Jiang ling Wang Dexian huang Institute of Process Control Engineering Department of Automation Tsinghua University Tsinghua National Laboratory for Information Science and Technology Tsinghua University

In the refinery scheduling, operational transitions in mode switching are of great significance to formulate dynamic nature of production and obtain efficient schedules. The discrete-time formulation meets two main challenges in modeling: discrete approximation of time and large size of mixed-integer linear problem(MILP).In this article, a continuous-time refinery scheduling model, which involves transitions of mode switching, is presented due to these challenges. To reduce the difficulty in solving large scale MILPs resulting from the sequencing constraints, the global event-based formulation is chosen. Both transition constraints and production transitions are introduced and the numbers of key variables and constraints in both of the discrete-time and continuous-time formulations are analyzed and compared. Three cases with different lengths of time horizons and different numbers of orders are studied to show the efficiency of the proposed model.

关键词： Refinery scheduling Operational transitions Continuous-time representation