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| 1 | Metal Sealing Performance of Subsea X-tree Wellhead Connector Sealer显示文摘The metal sealing performance of subsea X-tree wellhead connectors is crucial for the safety and reliability of subsea X-trees. In order to establish the theoretical relation between metal sealing ring's contact stress and its structural parameters and working pressure, a mechanical analysis method for double-cone sealing of high pressure vessels is applied in analyzing the metal sealing ring under the condition of preload and operation. As a result, the formula of the unit sealing load for the metal sealing ring under operation with residual preload is shown in this paper, which ensures that the metal sealing ring has an excellent sealing effect and can prevent the metal sealing ring from yielding. Besides, while analyzing the sealing process of the metal sealing ring, the change rule of contact stress and working pressure is concluded here, putting forward that the structural parameters of the metal sealing ring are the major factors affecting the change rule. Finally, the analytical solution through theoretical analysis is compared with the simulation result through finite element analysis in a force feedback experiment, and both are consistent with each other, which fully verifies for the design and calculation theory on metal sealing ring's contact stress and its structural parameters and working pressure deduced in this paper. The proposed research will be treated as an applicable theory guiding the design of metal seal for subsea X-tree wellhead connectors. | ZHAO Honglin CHEN Rui LUO Xiaolan DUAN Menglan LU Yinghui FU Guowei TIAN Hongping YE Daohui | 2015 | Chinese Journal of Mechanical Engineering2015，28，3： | 9 |
| 2 | Synthesis,photophysical properties and TD-DFT calculation of four two-photon absorbing triphenylamine derivatives显示文摘In this study,linear absorption,single-photon excited fluorescence,fluorescence quantum yields,fluorescence lifetime and two-photon excited fluorescence of a series of triphenylamine derivatives (L1,L2,L3 and L4) have been measured.L1 and L3 are D--A type dyes,while L2 and L4 are D--D--A type dyes (D=donor,A=acceptor).The investigated compounds consist of triphenylamine-bearing donor-substituted and/or systematically extended-conjugated length,which are designed to gain insight into the effect of the ethoxyl unit and-linkage length on the linear and nonlinear optical properties.The influence of solvent polarity on the photophysical properties was investigated.Employing time-dependent density functional theory (TD-DFT) calculations,the structure-property relationships are discussed. | KONG Lin YANG JiaXiang ZHOU HongPing LI ShengLi HAO FuYing ZHANG Qiong TU YuLong WU JieYing XUE ZhaoMing TIAN YuPeng | 2013 | Science China Chemistry2013，56，1： | 3 |
| 3 | Influence of Chromatogram Baseline Shifts and Exogenous Metabolite Signals on Metabolic Profiles of Traditional Chinese Medicine Chaihu and Its Liver Toxicity Metabonomics显示文摘 | ZENG Qi FENG Jiangjiang LU Tian XU Liangyu MIN Chunyan XIE Hongping | 2017 | Chemical Research in Chinese Universities2017，33，1： | 2 |
| 4 | Two novel terpyridine-based chromophores with donor-acceptor structural model containing modified triphenylamine moiety: Synthesis, crystal structures and two-photon absorption properties显示文摘Two novel terpyridine-based chromophores with D-A (D = donor, A = acceptor) structural model containing modified triphenylamine moiety (L1 and L2 ) have been conveniently synthesized via formylation and reduction in satisfactory yields, and fully characterized. The single crystals of them were obtained and determined by X-ray diffraction analysis. The relationships between structure and photophysical properties of the two chromophores were investigated both experimentally and theoretically. The measured maximum TPA cross-sections per molecular weight (δmax /MW) of the chromophores are 0.63 GM/(g mol) (L1) and 0.72 GM/(g mol) (L2), respectively, in DMF as a high polar solvent. The results indicate that the value of δmax/MW could be well tuned by the intramolecular charge transfer (ICT), which could be realized by introducing additional elecron-donor/acceptor groups. | LIU Jie ZHANG Qiong DING HongJuan ZHANG Jun TAN JingYun WANG ChuanKui WU JieYing LI ShengLi ZHOU HongPing YANG JiaXiang TIAN YuPeng | 2013 | Science China Chemistry2013，56，9： | 2 |
| 5 | Synthesis,structure and nonlinear optical properties of two novel two-photon absorption chromophores显示文摘Two triphenylamine-based derivatives that can be used as two-photon absorption chromophore,tris{4-[4-(3-trifluoromethyl-3-oxopanoyl)]phenyl}amine (1) and tris{4-[4-(3-phenyl-3-oxopanoyl)] phenyl} amine (2) were successfully synthesized and fully characterized by elemental analysis,IR,1H NMR and MS. The single crystal X-ray diffraction analysis showed that the molecules possess D-(π-A)3 structures. One-and two-photon absorption and fluorescence in various solvents were experimentally investigated. A data recording experiment proved the potential application of these chromophores. | CHENG LeHua LI Lin SUN PingPing ZHOU HongPing TIAN YuPeng TANG HuoHong | 2009 | Science China Chemistry2009，52，4： | 1 |
| 6 | Poliovirus 2A^pro induces the nucleic translocation of poliovirus 3CD and 3C' proteins显示文摘脊髓灰质炎病毒 genomic RNA 复制,蛋白质翻译,和 virion 汇编在主人房间的细胞质被执行。然而,这不意味着在脊髓灰质炎病毒感染和细胞的原子核之间没有关系。在这研究,标注荧光的脊髓灰质炎病毒 3CD 和 3C 蛋白质被显示出当另外的病毒的蛋白质不在时主要在 Vero 房间的细胞质被表示的 recombinant。在脊髓灰质炎病毒感染之上,然而,许多这些蛋白质再分配到原子核,以及到细胞质。一系列 transfection 实验表明脊髓灰质炎病毒 2Apro 为 3CD 和 3C 蛋白质的一样的再分配负责到原子核。而且,缺乏朊酶活动的变异的 2Apro 蛋白质废除了这效果。脊髓灰质炎病毒 2Apro 蛋白质也被发现到与 Nup153 蛋白质共同本地化,原子信封上的原子毛孔建筑群的一个部件。这些数据提供在脊髓灰质炎病毒蛋白质和房间原子核之间有内在的相互作用的进一步的证据,尽管有那,在脊髓灰质炎病毒复制周期的许多进程发生在细胞质。 | Wenwu Tian Zongqiang Cui Zhiping Zhang Hongping Wei XianEn Zhang | 2011 | Acta Biochimica et Biophysica Sinica2011，43，1： | 1 |
| 7 | Investigation of structure and thermal stability of surfactant-modified Al-pillared montmorillonite显示文摘 | Lingya Ma Qing Zhou Tian Li Qi Tao Jianxi Zhu Peng Yuan Runliang Zhu Hongping He | 2014 | Journal of Thermal Analysis and Calorimetry2014，，1： | 1 |
| 8 | Synthesis, crystal structures and electrochemical properties of two new metal-centered ferrocene complexes显示文摘Two new metal-centered ferrocene complexes Ni(SCN)2(L)4 (1) and Cu(OAc)2(L)2 (2) (L = 1-[1-ferro- cenylmethyl]imidazole) have been synthesized and characterized by elemental analysis, single crystal X-ray diffraction analysis, spectroscopic and cyclic voltammetric measurements. The geometry of Ni(Ⅱ) in 1 is octahedral, with four ligands in the equatorial plan and two thiocyanate anions at the axial site, while that of Cu(Ⅱ) in 2 is a distorted octahedron formed by two chealted OAc- and two ligands. Single crystal X-ray diffraction studies reveal that there is partial electron delocalization from ferrocene to imidazole in the two complexes. Electrochemical measurements exhibit that complexes 1 and 2 un-dergo similar reversible one electron redox processes, suggesting that the ferrocene moieties are equivalent and there are no interactions among them. | WANG XuChun WU JieYing ZHOU HongPing TIAN YuPeng LI Lin YANG JiaXiang JIN BaoKang ZHANG ShengYi | 2009 | Science China Chemistry2009，52，7： | 1 |
| 9 | Green Prevention and Control Technology against Main Diseases and Insect Pests of Facility Tomato显示文摘In recent years,with the increasing planting area of facility tomato,diseases and insect pests such as tomato grey mold(Botrytis cinerea),early blight(Alternaria solani),late blight(Phytophthora infestans),and whitefly(Trialeurodes uaporariorum) occur frequently,causing severe harms and difficulties in prevention and control.In order to ensure the normal production of facility tomato and improve the yield and quality of tomato,the corresponding prevention and control measures are put forward according to the regularity of the occurrence of diseases and insect pests and the characteristics of facility environment,which has certain guiding significance for agricultural production. | Hongping Tian Fujun Li Guocai Lu Chunhua Li | 2021 | Plant Diseases and Pests2021，12，4： | 0 |
| 10 | Synthesis of two carbazole-based dyes and application of two-photon initiating polymerization显示文摘Two carbazole-based polymerization initiators possessing blue fluorescence emission have been synthesized via Wittig reaction in the solid phase at room temperature.Two-photon excited fluorescence(TPEF) spectra for them were investigated under 800 nm fs laser pulse and two-photon absorption cross sections were determined by the Z-scan technique.Then two-photon initiating polymerization(TPIP) microfabrication experiments were successfully carried out.Three-dimensional lattice and artificial defects were gained,indicating that they were viable candidates for the two-photon polymerization initiator in practical application of microfabrication. | HU RenTao LüLiangFei RUAN BanFeng WANG Peng ZHANG MingLiang ZHOU HongPing LI ShengLi WU JieYing TIAN YuPeng | 2009 | Science China Chemistry2009，52，8： | 0 |
| 11 | Aluminum Ion Occupancy in the Structure of Synthetic Saponites显示文摘Saponite has been widely used in a number of industrial fields because of the higher surface acidity and thermal stability when compared with other clay minerals (Alexander and Dubois, 2000; Casagrande et al., 2005). Due to its limited natural resource, synthesis of saponite has attracted much attention during the last two decades (Vogels et al., 2005; Bisio et al., 2008). The main aim of this study is to investigate occupancy of Al ions and its effect on the structure of synthetic saponites. | HE Hongping LI Tian TAO Qi CHEN Tianhu | 2013 | 矿物学报2013，33，S1： | 0 |
| 12 | Cation-induced assembly of Zn(Ⅱ),Cd(Ⅱ) and Hg(Ⅱ) coordination complexes and DFT calculations to evaluate weak interactions between the helical chains显示文摘Two new coordination polymers [ZnLI2]∞ (1) and [CdLI2]∞ (2) (L: 3,6-di-(1,2,4-triazole-1-yl)-N-hexylcarbazole) were synthesized and their crystal structures were determined by single-crystal X-ray diffraction techniques.Complexes are both constructed with the helical chains along the 21 screw axis.The coordination bond,C-H···I weak interactions and π-πinteractions play significant roles in constructing their 3D or 2D frameworks.Two different DFT calculations are performed for the weak interactions between the helical chains of the three different coordination polymers ([ZnLI2]∞,[CdLI2]∞ and the reported [HgLI2]∞).The results reveal that weak interactions play important roles in these supramolecular systems of helical configuration,namely,the trend is the shorter H···I distance and π-π stacking distance,the stronger the intermolecular interactions.The photoluminescence of the complexes measured in the solid state at room temperature indicates that the emission intensity varies extensively,which can be rationalized by the heavy atom effect. | GENG WenQian LI XianLei YIN JianHui KE WeiZai HAO FuYin XU GuoYi ZHOU HongPing WU JieYing TIAN YuPeng | 2011 | Science China Chemistry2011，54，1： | 0 |
| 13 | Occurrence Dynamics and Countermeasure of Wheat Crown Rot in Weifang City显示文摘Wheat crown rot was first found in Weifang City in 2015,and now has become a major disease of wheat,showing an aggravating trend year by year.The author investigated the occurrence area and characteristics of wheat crown rot in Weifang City over the past 5 years,and analyzed the causes of the disease.The disease was mainly related to variety resistance and farming system.According to the occurrence regularity of the disease,a set of comprehensive control measures were put forward. | Hongping TIAN Guocai LU Xiuhua WEI Hongxia TIAN Miao ZHANG Fujun LI | 2022 | Plant Diseases and Pests2022，13，5： | 0 |
| 14 | Crystal structures,two-photon absorption and theoretical calculation of a series of bis-vinylpyridine compounds synthesized by one-step solid state reaction显示文摘Three bis-vinylpyridine compounds (4,4′-bis(2-vinylpyridine)biphenyl L1,4,4′-bis(3-vinylpyridine) biphenyl L2,and 4,4′-bis (4-vinylpyridine)biphenyl L3) were synthesized by one-step solid-state reactions at room temperature,giving nearly quantitative yields. The compounds obtained were fully characterized by IR,MS and NMR spectroscopies. The structures of L2 and L3 were determined by single crystal X-ray diffraction analysis. No noticeable solvatochromism was observed in either one-photon absorption or one-photon excited fluorescence spectra. All of the compounds have high fluorescence quantum yields and long fluorescence lifetime. The linear and nonlinear optical properties of the compounds were investigated both experimentally and theoretically. Interestingly,the position of the nitrogen atom from pyridine influences their two-photon absorption across-sections. | LI DongMei ZHANG Qiong A.M.Showkot HOSSAIN SUN Mei WU JieYing YANG JiaXiang ZHOU HongPing TAO LiMin WANG ChuanKui TIAN YuPeng | 2011 | Science China Chemistry2011，54，5： | 0 |
| 15 | Occurrence Dynamics of Agrotis ypsilon (Rottemberg) in Weifang显示文摘[Objective]The paper was to monitor the occurrence dynamics of Agrotis ypsilon in Weifang and to clarify its occurrence regularity.[Method]High-altitude trap lamp and ground trap lamp were used to trap insects respectively.The lamps were automatically turned on at 19:00 every day,and monitored for 12 h until 7:00 am.The species of insects trapped by lamps was recorded every day,and the number of each species was counted.[Result]The peak periods of A.ypsilon caught by high-altitude trap lamp were basically consistent with those caught by ground trap lamp,indicating that A.ypsilon was more likely to immigrate from local area of Weifang.[Conclusion]The study provides theoretical support for migration prediction and early warning of A.ypsilon in Weifang. | Hongping Tian Guocai Lu Fujun Li | 2021 | Plant Diseases and Pests2021，12，2： | 0 |
| 16 | A new series of two-photon polymerization initiators:Synthesis and nonlinear optical properties显示文摘Four photopolymerization initiators with D-π-D (D,donor; π,conjugation system) structure have been synthesized by solvent-free reaction and characterized by 1H NMR spectroscopy,IR and elemental analysis. The one-photon and two-photon excited fluorescence have been investigated in different solvents. Experimental results of the one-photon and two-photon absorption cross sections show different trends in OPA and TPA ability with different substitution groups in donor units. | GAN XiaoPing ZHOU HongPing SHI PengFei WANG Peng WU JieYing TIAN YuPeng YANG JiaXiang XU GuiBao ZHOU YuFang JIANG MinHua | 2009 | Science China Chemistry2009，52，12： | 0 |
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