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Chinese Journal of Structural Chemistry 2007年第8期26卷 929-932页

作者： ZHOU Hui DU Shao-wu li zhi-Hua State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter The Chinese Academy of Sciences Fuzhou Fujian 350002 China

The organic-inorganic hybrid polymer [Mn（mbbimb）2（1,5-nds）]n 1 has been synthesized using 1,5-naphthalenedisulfonate （1,5-nds） and 1,3-bis（benzimidazol-1-ylmethyl）- 2,4,structure analysis indicates that 1 crystallizes in monoclinic, space group C2/c with a=21.3546（17）, b=11.8841（7）, c=22.1588（16）A, β=108.058（3）°, C60H54MnN8O6S2, Mr=1102.17, Z=4, V=5346.5（7）A^3, Dc=1.369 g/cm^3, μ=0.386 mm^-1, F（000）=2300, S=1.091, R=0.0634 and wR=0.1559 for 4641 observed reflections （I 〉 2σ（I））. The Mn center is six-coordinated to furnish a distorted octahedral geometry, and the overall framework is a 6-connected 3D net.

关键词： solvothermal reaction organic-inorganic polymer 6-connected 3D net manganese complex

Modeling natural convection heat transfer from perforated plates

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2012年第5期13卷 353-360页

作者： Zan wu Wei li zhi-jian SUN Rong-hua HONG Department of Energy Engineering Zhejiang University Hangzhou 310027 China

Staggered pattern perforations are introduced to isolated isothermal plates,vertical parallel isothermal plates,and vertical rectangular isothermal fins under natural convection *** performance of perforations was evaluated theoretically based on existing correlations by considering effects of ratios of open area,inclined angles,and other geometric *** was found that staggered pattern perforations can increase the total heat transfer rate for isolated isothermal plates and vertical parallel plates,with low ratios of plate height to wall-to-wall spacing(H/s),by a factor of 1.07 to 1.21,while only by a factor of 1.03 to 1.07 for vertical rectangular isothermal fins,and the magnitude of enhancement is proportional to the ratio of open ***,staggered pattern perforations are detrimental to heat transfer enhancement of vertical parallel plates with large H/s ratios.

关键词： Staggered pattern perforation Natural convection Inclined plate Parallel plate Rectangular fins

Inhibitory effects of N-(4-hydrophenyl) retinamide on liver cancer and malignant melanoma cells

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World Journal of Gastroenterology 2005年第37期11卷 5763-5769页

作者： Xing-Zhong wu li Zhang Bi-zhi Shi Ping Hu Department of Biochemistry and Molecular Biology Shanghai Medical College Fudan University Shanghai 200032 China

AIM: To investigate the effect of N-(4-hydrophenyl) retinamide (4-HPR), the derivative of retinoic acid, on inhibition of migration, invasion, cell growth, and induction of apoptosis in hepatocellular carcinoma cells (HCCs) and malignant melanoma ***: 4-HPR was chemically synthesized. Cellular migration and invasion were assayed by Borden chamber experiment. Cell growth was assayed by MTT *** effect was measured using Hoechst 32258 staining and flow cytometry. Gene transfection was performed with ***: We observed that the migration of HCC and melanoma cells was significantly suppressed by 4-HPR and the migration cells were reduced to 58±5.03 (control 201±27.2, P＜0.05, n = 4) in SMMC 7721-k3 HCC, and to 254±25.04 (control 302±30.1, P＜0.05, n = 4) in melanoma cells after 6-h incubation with 4-HPR. The invasion through reconstituted basement membrane was also significantly reduced by 4-HPR treatment to 11.2±3.3 in SMMC 7721-k3 HCC (control 27±13.1), and to 24.3±3.2 in melanoma cells (control 67.5±10.1, P＜0.05, n = 3). Cell growth, especially in melanoma cells, was also significantly ***, 3 μmol/L of 4-HPR induced apoptosis in B16 melanoma cells (37.11±0.94%) more significantly than all-trans retinoic acid (P＜0.05), but it failed to induce apoptosis in SMMC 7721-k3 HCC. The mechanism for 4-HPR-induced apoptosis was not clear, but we observed that 4-HPR could regulate p27kip1, and overexpression of cerebroside sulfotransferase (CST) diminished the apoptosis induced by 4-HPR in melanoma ***: 4-HPR is a potent inhibitor of HCC migration and inducer of melanoma cell apoptosis. CST and p27kip1 expression might be associated with 4-HPR-induced apoptosis.

关键词： N-(4-hydrophenyl) retinamide Apoptosis CST p27^kip1

Analysis of a FBG sensing system with transverse uniform press by using genetic algorithm

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Optoelectronics Letters 2008年第2期4卷 121-125页

作者： TENG Feng-cheng YIN Wen-wen wu Fei li zhi-quang wu Ti-hua Institute of Automatic Instrument College of Electric Engineering Yanshan University Qinhuangdao 066004 China

An analytical method in a quasi-static fiber grating sensing system under transverse uniform press is proposed based on genetic algorithm The effect of population size, generations, crossover ratio and mutation ratio to genetic algorithm, and the optimization parameters of genetic algorithm were given. The relevant experimental system is constructed. The simulation and experiments show that the analytical method proposed can be applied to analyze the reflective spectra of the quasistatic FBG sensing system at transverse uniform press, the strain measurement with high-precision of 0.91% can be realized

关键词： FBG 感觉系统遗传算法光纤元件

Predicting Critical Conditions and Stress-Strain Curves for Dynamic Recrystallization in SPHC Steel

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Journal of Iron and Steel Research International 2010年第7期17卷 51-57页

作者： wu Lai-zhi li Xue-song CHEN Jun ZHANG Hong-bing CUI Zhen-shan Department of Plasticity Technology Shanghai Jiaotong University Shanghai 200030 China

The hot compression tests on an SPHC steel were carried out in the temperature range of 900-1150 ℃ and strain rate range of 0.1-10 s-1,in which the maximum true strain is *** activation energy of test steel was calculated,to be 299.4 kJ/*** critical stresses and strains for initiation of dynamic recrystallization were determined based on changes of the work hardening rate（θ）as a function of the flow stress（σ）or strain（ε）,*** dependence of the peak strain（εp）,the peak stress（σp）,and the steady state stress（σs）were determined based on the Zener-Hollomen *** mathematical models of the flow stress evolution were established in the hardening and dynamic recovery region and dynamic recrystallization region,*** average error between experimental curves and predicted ones was around 3.26%.

关键词： flow stress dynamic recrystallization critical stress critical strain SPHC steel

Development of a monolithic polymer pipette for solid-phase extraction of liquiritigenin in rat plasma

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Chinese Chemical Letters 2012年第6期23卷 723-726页

作者： Hong wu Zhang Kang li zhi Xian liang Feng YangWang Qi Wen Lu School of Pharmacy Guangdong Pharmaceutical College Guangzhou 510006 China

A monolithic polymer column with mixed-mode interaction was prepared by in situ polymerization in a 1000μL pipette. Two kinds of monomers, butyl methacrylate （BMA） and 2-（dimethylamino）ethyl methacrylate （DMAM） were applied to constructing the mixed-mode interaction of monolithic polymer column. Its solid-phase extraction properties for liquiritigenin （LQG） were evaluated by high performance liquid chromatography （HPLC） with a gradient elution procedure. After the extraction procedure was optimized, the maximum binding capacity and extraction recovery following the optimal extraction procedure were investigated. Calibration curve was expressed as A = 65.9C ＋ 4.53 （r2 = 0.998） with a linear range of 0.151-1.80μg/mL. The experimental results indicate that the monolithic polymer pipette presents good extraction efficiency for LQG. It can be envisaged that the developed monolithic polymer pipette possesses the potential for its application to the enrichment of other flavonoids compounds being similar to the structure of LQG.

关键词： Monolithic polymer pipette Solid phase extraction High performance liquid chromatography liquiritigenin

New phenylbutenoids and terpene glycosides from Ginkgo biloba leaves

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Chinese Journal of Natural Medicines 2024年第2期22卷 161-170页

作者： SUN Zeshi liN Shan wu zhi-li DONG Hong-Yuan XU Xi-Ke li Hui-liang WANG Jinxin School of Pharmacy Second Military Medical UniversityShanghai 200433China State Key Laboratory of New Drug and Pharmaceutical Process Shanghai Institute of Pharmaceutical IndustryChina State Institute of Pharmaceutical IndustryShanghai 201203China

Our continued works on the chemical constituents of Ginkgo biloba(***)leaves has led to the isolation of two novel phenylbutenoids(1,2),along with five previously unidentified terpene glycosides(3−7).Among them,compounds 1 and 2 represent unique(Z)-phenylbutenoids,3−6 are megastigmane glycosides,and 7 is identified as a rare bilobanone glycoside(Fig.1).This study marks the first reported isolation of phenylbutenoid and bilobanone glycoside from *** chemical structures of these compounds were elucidated through extensive spectroscopic analysis,including HR-ESI-MS and various 1D and 2D NMR ***,the absolute configurations of these molecules were determined using Mosher’s method,ECD experiments,and Cu-KαX-ray crystallographic analyses.

关键词： Ginkgo biloba Phenylbutenoid Megastigmane glycoside Bilobanone glycoside

Effect of Cryogenic Treatment on Properties of Cr8-Type Cold Work Die Steel

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Journal of Iron and Steel Research International 2010年第6期17卷 43-46,59页

作者： CHI Hong-xiao MA Dang-shen YONG Qi-long wu li-zhi ZHANG Zhan-pu WANG Yong-wei Faculty of Materials Science and Engineering Kunming University of Science and Technology Kunming 650093 Yunnan China Institute for Structural Materials Central Iron and Steel Research Institute Beijing 100081 China Heye Special Steel Co Ltd Shijiazhuang 050031 Hebei China

The effect of cryogenic treatment on the properties of Cr8-type cold work die steel was investigated. The results show that cryogenic treatment increases hardness by decreasing retained austenite, but the degree depends on the austenitizing temperature. When quenching at lower austenitizing temperature, the steel can obtain higher tough- ness by cryogenic treatment substituting conventional treatment process. Cryogenic time has little effect on cryogenic treatment. Conversely, cryogenic temperature has a great effect on cryogenic treatment and the effect of cryogenic treatment is more obvious with decreasing cryogenic temperature. In addition, deep cryogenic treatment improves the wear resistance by precipitating more homogeneous specific carbides.

关键词： cryogenic treatment tool steel cold work die steel property wear resistance

Original article： Anterior and middle skull base reconstruction after tumor resection

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Chinese Medical Journal 2010年第3期 281-285页

作者： WANG Bo wu Sheng-tian li zhi liU Pi-nan Department of Neurosurgery Beijing Tiantan Hospital Affiliated to Capital Medical University Beijing 100050 China

Background Surgical management of skull base tumors is still challenging today due to its sophisticated operation procedure. Surgeons who specialize in skull base surgery are making endeavor to promote the outcome of patients with skull base tumor. A reliable skull base reconstruction after tumor resection is of paramount importance in avoiding life-threatening complications, such as cerebrospinal fluid leakage and intracranial infection. This study aimed at investigating the indication, operation approach and operation technique of anterior and middle skull base reconstruction. Methods A retrospective analysis was carried out on 44 patients who underwent anterior and middle skull base reconstruction in the Department of Neurosurgery at Beijing Tiantan Hospital between March 2005 and March 2008. Different surgical approaches were selected according to the different regions involved by the tumor. Microsurgery was carried out for tumor resection and combined endoscopic surgery was performed in some cases. According to the different locations and sizes of various defects after tumor resection, an individualized skull base soft tissue reconstruction was carried out for each case with artificial materials, pedicled flaps, free autologous tissue, and free vascularized muscle flaps, separately. A skull base bone reconstruction was carried out in some cases simultaneously. Results Soft tissue reconstruction was performed in all 44 cases with a fascia lata repair in 9 cases, a free vascularized muscle flap in 1 case, a pedicled muscle flap in 14 cases, and a pedicled periosteal flap in 20 cases. Skull base bone reconstruction was performed on 10 cases simultaneously. The materials for bone reconstruction included titanium mesh, free autogenous bone, and a Medpor implant. The result of skull base reconstruction was satisfactory in all patients. Postoperative early-stage complications occurred in 10 cases with full recovery after conventional treatment. Conclusions The specifi

关键词： skull base neoplasms microsurgery endoscopes skull base reconstruction

Overview of in-situ oxygen production technologies for lunar resources

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 233-255页

作者： Youpeng Xu Sheng Pang liangwei Cong Guoyu Qian Dong Wang Laishi li Yusheng wu zhi Wang College of Materials Science and Engineering Shenyang University of TechnologyShenyang 110870China CAS Key Laboratory of Green Process and Engineering National Engineering Research Center for Green Recycling of Strategic Metal ResourcesInstitute of Process EngineeringChinese Academy of SciencesBeijing 100190China Innovation Academy for Green Manufacture Chinese Academy of SciencesBeijing 100190China School of Chemical Engineering University of Chinese Academy of SciencesBeijing 100049China

The rich resources and unique environment of the Moon make it an ideal location for human expansion and the utilization of extraterrestrial ***,crucial for supporting human life on the Moon,can be extracted from lunar regolith,which is highly rich in oxygen and contains polymetallic *** oxygen and metal extraction can be achieved using existing metallurgical ***,the ample reserves of water ice on the Moon offer another means for oxygen *** paper offers a detailed overview of the leading technologies for achieving oxygen production on the Moon,drawing from an analysis of lunar resources and environmental *** delves into the principles,processes,advantages,and drawbacks of water-ice electrolysis,two-step oxygen production from lunar regolith,and one-step oxygen production from lunar *** two-step methods involve hydrogen reduction,carbothermal reduction,and hydrometallurgy,while the one-step methods encompass fluorination/chlorination,high-temperature decomposition,molten salt electrolysis,and molten regolith electrolysis(MOE).Following a thorough comparison of raw materials,equipment,technology,and economic viability,MOE is identified as the most promising approach for future in-situ oxygen production on the *** the corrosion characteristics of molten lunar regolith at high temperatures,along with the Moon's low-gravity environment,the development of inexpensive and stable inert anodes and electrolysis devices that can easily collect oxygen is critical for promoting MOE technology on the *** review significantly contributes to our understanding of in-situ oxygen production technologies on the Moon and supports upcoming lunar exploration initiatives.

关键词： lunar resources in-situ oxygen production space metallurgy molten lunar regolith electrolysis