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Multiple Effects Tailoring the Self-organization Behaviors of Triphenylene Side-chain Liquid Crystalline Polymers via Changing the Spacer Length

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Chinese Journal of Polymer Science 2018年第8期36卷 960-969页

作者： Xiang-Hui Han Xi-Wen Yang Sheng Chen Hang Luo Dou zhang hai-liang zhang Key Laboratory of Polymeric Materials and Application Technology of Hunan Province Key Laboratory of Advanced Functional Polymer Materials of Colleges and Universities of Hunan ProvinceCollege of ChemistryXiangtan University State Key Laboratory of Powder Metallurgy Central South University

Long-alkyl tail triphenylene （TP） side-chain liquid crystalline polymers （SCLCPs） with different spacer length （P-m-TP, m = 2, 3, 4, 6, 8, which is the number of carbon atom in the flexible alkyl spacers） have been successfully synthesized via free radical polymerization. The differential scanning calorimetry （DSC）, polarized light microscopy （POM）, ultraviolet-visible spectroscopy （UV- Vis）, wide-angle X-ray diffraction （WAXD） and small-angle X-ray scattering （SAXS） measurements were performed to investigate the influence of multiple effects on the self-organization behaviors of P-m-TP, including steric effect, decoupling effect and π-π stacking effect. The experimental results revealed that P-m-TP （m = 2, 3, 4） formed the columnar phase which was developed by the TP moieties and the main chain as a whole, suggesting that the side-chains had strong steric effect even though the number of spacer length （m） exceeded 4. In addition, the clearing points （Tis） of the polymers were above 300 ℃. When m = 6 and 8, the polymers displayed hexagonal columnar phase and exhibited the low Tis （91 and 80 ℃ respectively）, originating from the self-assembly of triphenylene due to the decoupling effect and π-π stacking effect. This work offers a viable and inspiring pathway to control the phase transition temperature and phase structure ofTP SCLCPs via simply tailoring the spacer length and increasing the alkyl tail length of TP.

关键词： Polymer synthesis Side-chain liquid crystalline polymers Phase structure Steric effect

Hot corrosion behaviors of 921A alloy and HVAF-sprayed Fe-based amorphous coating covered with KCl-ZnCl_(2) salts

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Journal of Iron and Steel Research International 2023年第8期30卷 1537-1549页

作者： hai-liang zhang Ling-xu Yang Qian Wang Jiang-tao Wu Suo-de zhang Chao-liu Zeng Institute of Metal Research Chinese Academy of SciencesShenyang 110016LiaoningChina School of Materials Science and Engineering University of Science and Technology of ChinaShenyang 110016LiaoningChina Songshan Lake Materials Laboratory Dongguan 523808GuangdongChina School of Materials and Metallurgy University of Science and Technology LiaoningAnshan 114051LiaoningChina

Hot corrosion behaviors of the 921A alloy and Fe-based amorphous coating induced by KCl-10% ZnCl_(2) and KCl-55% ZnCl_(2) salts at 450℃ in air for 40 h were *** show that the 921A alloy suffers more serious corrosion damage than the coating and KCl-55% ZnCl_(2) salts are more corrosive than KCl-10% ZnCl_(2) *** the two salts,an Fe_(2)O_(3) layer is formed on the 921A alloy surface,while an outer Fe-rich oxide layer and an inner Cr-rich oxide layer are formed on the surface of the ***,a certain amount of metal chloride can be found at the oxide/alloy(coating)interface,which can be explained by "active oxidation".However,the corrosion resistance of the Fe-based amorphous coating did not achieve the desired results,probably because the intersplats in the coating serve as corrosion diffusing channels,which facilitate the corrosion damage ***,the coating is still in amorphous state after hot corrosion exposure.

关键词： Hot corrosion Chloride deposit 921A alloy Fe-based amorphous coating Waste-to-energy plant

H-BONDING SELF-ASSEMBLED TEMPLATE-CONTROLLED SYNTHESIS OF A NOVEL SOLUBLE AND REACTIVE AMIDE-BRIDGED LADDERLIKE POLYHYDROSILOXANE

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Chinese Journal of Polymer Science 2006年第1期24卷 67-72页

作者： Guan-qun Zhong Qing-hua Duan Kui-lin Deng Ai-qin zhang Ping Xie hai-liang zhang Rong-ben zhang Institute of Polymer Science Xiangtan University Xiangtan 411105 China State Key Laboratory on Polymer Physics ＆ Chemistry Joint Laboratory of Polymer Science ＆ Materials Institute of Chemistry Chinese Academy of Sciences Beijing 100080 China College of Chemistry＆ Environmental Science Hebei University Baoding 071002 China

A novel soluble and reactive amide-bridged ladderlike polyhydrosiloxane （ALPHS） was first synthesized by an amido H-bonding self-assembled template. ALPHS with molecular weight M^-a = 18300 has very highly ordered ladderlike structure, which was confirmed by a sharp resonance absorption peak of [-Si（H）O2/2 ] moiety with the half peak width △1/2 〈 0.5 in^29Si-NMR spectrum. Presence of the reactive Si-H groups gives ALPHS an opportunity to further derive a variety of functional polymers by versatile Si-H reactions such as hydrosilylation, condensation, and so on.

关键词： Ladderlike Polyhydrosiloxane Amido H-bonding template.

Perioperative complications of radical retropubic prostatectomy in patients with locally advanced prostate cancer： a comparison with clinically localized prostate cancer

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Asian Journal of Andrology 2013年第2期15卷 241-245,I0007,I0008页

作者： Xu-Dong Yao Xiao-Jun Liu Shi-Lin zhang Bo Dai hai-liang zhang Ding-Wei Ye Department of Urology Cancer Hospital Fudan University Shanghai 200032 China Shanghai Medical College Fudan University Shanghai 200032 China

Radical prostatectomy （RP） continues to be an effective surgical therapy for prostate carcinoma, particularly for organ-confined prostate cancer （PCa）. Recently, RP has also been used in the treatment of locally advanced prostate cancer. However, little research has been performed to elucidate the perioperative complications associated with RP in patients with clinically localized or locally advanced PCa. We sought to analyse the incidence of complications in these two groups after radical retropubic prostatectomy （RRP）. From June 2002 to July 2010, we reviewed 379 PCa patients who underwent RRP in our hospital. Among these cases, 196 had clinically localized PCa （Tla-T2c group 1）, and 183 had locally advanced PCa （ ≥ T3,： group 2）. The overall complication incidence was 21.9%, which was lower than other studies have reported. Perioperative complications in patients with locally advanced PCa mirror those in patients with clinically localized PCa （26.2% vs. 17.8%, P=0.91）. Our results showed that perioperative complications could not be regarded as a factor to consider in regarding RP in patients with cT3 or greater.

关键词： complications clinically localized prostate cancer locally advanced prostate cancer prostate cancer (PCa) prostatectomy radical retropubic prostatectomy (RRP)

Synthesis of hierarchically porous carbon materials by zinc salts-assisted carbonization of biomass and organic solid wastes

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Particuology 2024年第1期84卷 45-52页

作者： Le-Le zhang Lei Tong Yanwei Ding Wanqun zhang hai-Wei liang Hefei National Research Center for Physical Sciences at the Microscale Department of ChemistryUniversity of Science and Technology of ChinaHefei230026China

Hierarchically porous carbons(HPCs)with multimodal pores have attracted considerable attention due to their unique physical and chemical properties and various application potentials in heterogeneous catalysis,environmental treatment,and energy storage and ***,we report a general and simple zinc salts-assisted method for the synthesis of HPCs with varied porosity and chemical func-tionalities by the direct carbonization of diverse biomass and *** the carbonization,zinc salts are thermally decomposed into nanoparticles that serve as in-situ templates to introduce nanopores in *** prepared HPCs exhibit high specific surface areas(up to 2432 m2 g-1),large pore volumes(up to 4.30 cm^(3)g^(-1)),and broad pore size ***,the zinc salts can be recovered and recycled,supporting the sustainable production of HPCs on large *** prepared HPCs-supported catalysts with atomically dispersed metal sites exhibit promising electrocatalytic performance for the oxygen reduction reaction.

关键词： Hierarchical porous carbon Zinc salts Biomass Wastes Electrocatalysis

Tunable luminescence of Bi^(3+)/Eu^(3+)-doped SiO_(2)-Al_(2)O_(3)-MCO_(3)(M=Ca,Sr,Ba) glasses for WLED

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Journal of Rare Earths 2024年第9期42卷 1652-1657,I0001页

作者： Falin zhang Xiaoying liang Rongfei Wei hai Guo Fangfang Hu Department of Physics Zhejiang Normal UniversityJinhua321004China

In this work,a group of Bi^(3+)/Eu^(3+)-doped SiO2-Al_(2)O_(3)-MCO_(3)(M=Ca,Sr,Ba) glasses were fabricated through melt-quenching *** structure and photoluminescence characters were studied via Xray diffraction(XRD),UV-Vis transmission spectra(TRS),excitation spectra,emission spectra and decay *** XRD results show that no nano-crystal phase forms in glass matrix with different doping concentrations of Bi^(3+)and Eu^(3+)*** regulating optical alkalinity value,the intensity of Bi^(3+)ions increases and the peak position shifts to red *** Bi^(3+)/Eu^(3+) co-doped glasses show a blue-white-yellow-red luminescence by changing concentration of Eu^(3+) *** transfer efficiency from Bi^(3+) to Eu^(3+) can reach as high as 10.54%.At 423 K, the emission intensity of 55SiO_(2)-10Al_(2)O_(3)-35BaO-0.25Bi_(2)O_(3)(GBE0.5) is 31.1% of that at 308 ***,the activation energy of the glass matrix is 0.251 *** results suggest that these Bi^(3+)/Eu^(3+) co-doped glass samples possess potential application in LED field.

关键词： Bi^(3+) Eu^(3+) Glass White light-emitting diode Energy transfer Rare earths

Serum lipid profiles： novel biomarkers predicting advanced prostate cancer in patients receiving radical prostatectomy

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Asian Journal of Andrology 2015年第2期17卷 239-244,I0008页

作者： Gui-Ming zhang Xiao-Jian Qin hai-liang zhang Wen-Jun Xiao Yao Zhu Cheng-Yuan Gu Bo Dai Guo-hai Shi Ding-Wei Ye Department of Urology Fudan University Shanghai Cancer Center Shanghai China Department of Oncology Shanghai Medical College Fudan University Shanghai China.

This study aimed to evaluate the role of serum lipid profiles as novel biomarkers in predicting pathological characteristics of prostate cancer （PCa）. We retrospectively analyzed 322 consecutive patients with clinically localized PCa receiving radical prostatectomy （RP） and extended pelvic lymphadenectomy. Unconditional logistic regression was used to estimate the prostatectomy Gleason score （pGS）, pathological stage and lymph node involvement （LNI） in RP specimens. Preoperative prostate-specific antigen （PSA） levels, biopsy GS （bGS）, and preoperative tumor, node, metastasis staging were used as basic variables to predict postoperative pathological characteristics. Preoperative serum lipid profiles were introduced as potential predictors. A receiver operating characteristic （ROC） curve was used to determine predictive efficacy. Significant differences in pathological characteristics were observed among patients with normal and abnormal total cholesterol （TC）, triglyceride （TG）, and low-density lipoprotein （LDL） levels, with the exception of pGS in the TG group. Multivariable regression analysis revealed that the odds ratio for high levels of TC for LNI compared with normal TC levels was 6.386 （95% confidence interval [Cl] 1.510-27.010）, 3.270 （95% CI. 1.470-7.278） for high levels of TG for pT3-4 disease, and 2.670 （95% Ch 1.134-6.287） for high levels of LDL for pGS. The area under the ROC curve of the models with dyslipidemia was larger than that in models without dyslipidemia, in predicting pathological characteristics. Abnormal TC, TG, and LDL levels are significantly associated with postoperative pathological status in PCa patients. Together with preoperative PSA levels, bGS, and clinical stage, dyslipidemia is more accurate in predicting pathological characteristics.

关键词： biological markers dyslipidemias lipids pathology prostatic neoplasms

Prevalence of incidental prostate cancer in patients undergoing radical cystoprostatectomy： data from China and other Asian countries

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Asian Journal of Andrology 2009年第1期11卷 104-108页

作者： Yi-Ping Zhu Ding-Wei Ye Xu-Dong Yao Shi-Lin zhang Bo Dai hai-liang zhang Yi-Jun Shen Yao Zhu Guo-hai Shi Department of Urology Cancer Hospital Fudan University Shanghai 200032 China

The purpose of this study is to investigate the frequency of prostate cancer （Pca） discovered incidentally in radical cystoprostatectomy specimens in Asia and to determine the feasibility of prostate-sparing cystectomy （PSC） for Asian patients. Ninety-two male bladder cancer patients who underwent radical cystoprostatectomy at our center between January 2003 and January 2008 were included in this study. The mean age of patients was 67.1 years （range： 32-75 years）. Prostate-specific antigen （PSA） levels and digital rectal examination （DRE） results before surgery were obtained retrospectively. Prostates of all patients were embedded and sectioned at 5-mm intervals. The same pathologist examined the prostatic tissues from radical cystoprostatectomy specimens. Finally, a structured literature review was performed using MEDLINE and PUBMED to estimate the occurrence of incidental Pca in Asia. Of the 92 patients, 3 （3.3%） were found to have Pca; in one out of three （33.3%） patients the disease was clinically significant due to a Gleason grade 4 carcinoma. Eight articles were included in our review. The overall incidence of Pca discovered incidentally in radical cystoprostatectomy specimens in Asia was 9.9% （64/642）. When age was restricted to 〈 60 years, only 7 out of 222 （3.2%） patients were found to have synchronous Pca, and none of the cases was clinically significant. The occurrence of Pca in radical cystoprostatectorny specimens in Asia is much lower than that in Western countries. PSC might be feasible for Asian patients under a strict preoperative selection.

关键词： bladder cancer cystoprostatectomy incidental prostate cancer prostate-sparing cystectomy

Hydrogen storage thermodynamics and kinetics of as-cast Ce-Mg-Ni-based alloy

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Journal of Iron and Steel Research International 2024年第3期31卷 752-766页

作者： Yan Qi Xin zhang Jun Li Dong-liang Zhao Shi-hai Guo Yang-huan zhang Department of Functional Material Research Central Iron and Steel Research InstituteBeijing 100081China China Rare Earth New Material(Weishan)Co..Ltd. Jining 277600ShandongChina Collaborative Innovation Center of Integrated Exploitation of Bayan Obo Multi-Metal Resources Inner Mongolia University of Science and TechnologyBaotou 014010Inner MongoliaChina

The reaction kinetics of alloys based on magnesium are known to be greatly improved by the partial substitution of Mg with rare earths and transition metals,particularly *** enhanced superficial hydrogen dissociation rate,the weakened Mg-H bond and the lower activation energy following element replacement are thought to be related to the better *** experimental alloys Ce5Mg_(95-x)Ni_(x)(x=5,10,15)were smelted by the vacuum induction *** phase transformation and structural evolution of experimental alloys before and after reaction with hydrogen were char-acterized by X-ray diffraction,scanning electron microscopy and transmission electron *** cast specimens contain CeMg_(12),Mg and Mg_(2)Ni phases,and the increase in Ni content results in an obvious growth of Mg_(2)Ni *** isothermal and non-isothermal hydrogenation and dehydrogenation kinetics of the experimental specimens were investi-gated using the Sievert apparatus,differential scanning calorimetry and thermal gravimetric *** activation energy may be calculated using the Arrhenius and Kissinger *** experimental alloys have been shown to have good activation properties,with a reversible hydriding and dehydriding capacities of around 5.0 wt.%in the first *** initial dehydrogenation temperature of MgH_(2) decreases from 557.5 to 537.7 K with changing Ni content from 5 to 15 at.%.The dehydrogenation activation energy also reduces from 77.09 to 62.96 kJ/mol,which explains the improved hydrogen storage performance caused by Ni *** can be shown that the impact of Ni on the decomposition enthalpy of MgH_(2) is quite modest,with the absolute enthalpy(ΔHr)only decreasing from 78.48 to 76.15 kJ/mol.

关键词： Mg-based alloy Ni content Hydrogen storage kinetics Thermodynamic property Activation energy