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Influences of preparation techniques on glass-forming ability of Fe-P-B-Si-C amorphous alloys

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Journal of Iron and Steel Research International 2018年第6期25卷 674-679页

作者： ji-jun zhang Ya-qiang Dong Lu-yang Bie Qiang Li jia-wei Li Xin-min Wang Key Laboratory of Magnetic Materials and Devices NingboInstitute of Materials Technology and Engineering ChineseAcademy of Sciences Ningbo 315201 Zhejiang China Zhejiang Province Key Laboratory of Magnetic Materials andApplication Technology Ningbo Institute of MaterialsTechnology and Engineering Chinese Academy of SciencesNingbo 315201 Zhejiang China University of Chinese Academy of Sciences Beijing 100049China School of Physics Science and Technology XinjiangUniversity Urumqi 830046 Xinjiang China

It has been widely accepted that the ultrafast cooling rate is required for the glass formation of amorphous alloys. Here, the larger glass-forming ability （GFA） of Fe76P5（B0.5Si0.3C0.2）19 amorphous alloy was achieved by water quenching at lower cooling rate under argon atmosphere. Cylindrical rods with diameters of 1-2 mm were prepared by water quenching without flux treatment, Cu-mold injection casting, and Cu-mold suction casting, respectively. The influences of the preparation techniques with different cooling rates on GFA, thermal property, and nucleation/growth behavior were examined. The critical diameter of the Fe76P5（B0.5Si0.3C0.2）19 amorphous alloys is 1.7 mm for water quenching while smaller than 1.0 mm for injection casting. Microstructure analysis indicates that the crystallization and solidification processes are quite different between the water-quenched and the injection-cast rods. These findings could deepen fun-damental understanding on the relationship between the cooling rate, techniques, and GFA of Fe-based amorphous alloys.

关键词： Fe-based amorphous alloy Preparation technique Glass-forming ability Crystallization behavior

Doping Effect of CuO on CeO_2 for CO Oxidation

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Chinese Chemical Letters 1998年第9期9卷 873-876页

作者： ji jun zhang Neng LI Ying jun LIU Bing Xiong LIN(Institute of Physical Chemistry, Peking University, Beijing 100871) Institute of Physical Chemistry Peking University Beijing 100871 China

Cu-Ce-O catalysts, prepared by the amorphous citrate precursor (ACP) method, wereinvestigated by ICP, XRD and ndcro-reactor techniques. At low copper content of Cu-Ce-Ocatalysts, fluorite structures formed at low calcining temperatures, and Cuo doped into the CeO2matrix; at high copper content, in addition to the fluorite structure, crystalline monoclinic phaseCuO formed as well at high calcining temperatures. There was no other phase formed even calcinedat 1000℃. The results show that only a little CuO dopes into the CeO2 matrix to form complexoxide, which promotes the catalytic activity of CO oxidation greatly. The optimum Cu-Ce-Ocatalyst is composed of 15% copper by Cu/(Ce+Cu) atomic ratio, and calcined at 700℃ for 4h. Thephase compositions include the crystalline CuO and the active complex oxide with fluoritestructure. The formulation of the active complex oxide is Cu0.06Ce0. 94O1.94.

关键词： ceria copper oxide fluorite-type structure, CO oxidation catalyst, doping effect

The magic of integration:Exploring the construction of dithienylethene-based infinite coordination polymers and their synergistic effect for gaseous ammonia probe applications

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Chinese Chemical Letters 2016年第4期27卷 518-522页

作者： Yan-Kai Lia jun-ji zhang Zi-jun Bian You-Xin Fu Fei Liu Chen-Hui Wang Xiang Ma jun Hu Hong-Lai Liu Key Laboratory for Advanced Materials and Department of Chemistry East China University of Science and Technology Key Laboratory for Advanced Materials and Institute of Fine Chemicals East China University of Science and Technology Xi’an Thermal Power Research Institute Co. Ltd. (Suzhou Branch)

Infinite coordination polymers are recognized as excellent platform for *** motifs,which are one of the most attractive functional moieties,were incorporated into an infinite coordination polymer,to deliver a‘‘smart’’porous material that can response to external *** obtained dithienylethene-based infinite coordination polymers（named Cu-DTEDBA）share the advantages of both infinite coordination polymers（porosity and stability）and dithienylethene motifs（photochromism）.The physical and chemical properties of Cu-DTEDBA were characterized by FTIR,TEM,SEM,XRD,TGA,UV–vis,EDX and ***,the combination of dithienylethene and infinite coordination polymers gives rise to a synergistic effect,which induces functional behaviors of ammonia sensor *** open and closed forms of Cu-DTEDBA exhibit distinct colorimetric change upon exposure to gaseous ammonia,which is not observed in dithienylethene free molecules.

关键词： Dithienylethene Photochromism Infinite coordination polymers Synergistic effect Gaseous ammonia probe

Clinical and experimental study on regional administration of phosphorus32 glassmicrospheres in treating hepatic carcinoma

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World Journal of Gastroenterology 1999年第6期5卷 492-505页

作者： LIU Lu, jiANG Zao, TENG Gao jun, SONG ji Zhi, zhang Dong Sheng, GUO Qing Ming, FANG Wen, HE Shi Cheng and GUO jin He 南京铁道医科大学江苏苏州

AIM To study the therapeutical effectiveness, dosage range and toxic adverse effects of domestic phosphorus 32 glass microsphere and evaluate its clinical significance. METHODS Ⅰ. Fifty two BALB/*!c tumor bearing male nude mice were allocated into treatment group( n =38) and control group( n =14). In the former group different doses of 32 P GMS were injected into the tumor mass, while in the latter 31 P GMS or no treatment was given. The experimental animals were sacrificed in batches, and then the tumors and their nearby tissues were examined by light and electron microscopy. Ⅱ. Through selective catheterization of hepatic artery, 32 P GMS was infused to 5 healthy domestic pigs in a dosage equivalent to the therapeutic dose for human being, and 31 P GMS was infused to another 5 healthy domestic pigs. Two pigs infused with contrast medium served as whole course blank controls. One pig from each group was surrendered to euthanasia at week 1, 4, 8 and 16 respectively. The ultrastructural histopath ological changes in liver tissues taken from different sites were evaluated semiquan titatively. Ⅲ. One hundred and twenty seven times of 32 P GMS intrahepatic artery interventional therapies were performed on 93 patients with hepatic carcinoma, including 79 cases of primary hepatic carcinoma and 14 cases of secondary hepatic carcinoma. 32 P GMS ( n =30), and group B, 32 P GMS and half dose of trans hepatic artery embolization (TAE) ( n =49) , and 18 patients with HCC by TAE only as control group C. Fourteen patients with secondary hepatic carcinoma were treated in the same way as group B or C. RESULTS Ⅰ. Comparing with the control group, the treatment group of tumor bearing nude mice attained the tumor inhibition rates of 59 7%-93 7% ( F =579 62, P <0 01) at 14*!d . At an absorbed dose of 7320Gy, the tumor cells were completely destroyed. When the absorbed doses ranged from 1830Gy to 3660Gy, most of the tumor cells showed the evidences of injury or necrosis, but there appea

关键词： liver neoplasms/therapy phosphorus 32 glass microspheres ( 32 P GMS) 31 P GMS interventional therapy

空间曲面纤维网格制作及加固水下混凝土柱试验研究

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土木工程学报 2017年第10期50卷 45-53,90页

作者：魏洋张希吴刚纪军张敏南京林业大学江苏南京210037 东南大学混凝土及预应力混凝土结构教育部重点实验室江苏南京210096 北京特希达技术研发有限公司北京100011

平面纤维(FRP)网格以其卓越的性能在特定结构加固方面具有较好的应用优势,但其对小尺寸曲面、异形混凝土结构构件的约束加固并不适用。提出了空间曲面纤维网格制作工艺,制作了曲面纤维网格制品,测试了纤维网格拉伸的力学性能;提出了空... 详细信息

平面纤维(FRP)网格以其卓越的性能在特定结构加固方面具有较好的应用优势,但其对小尺寸曲面、异形混凝土结构构件的约束加固并不适用。提出了空间曲面纤维网格制作工艺,制作了曲面纤维网格制品,测试了纤维网格拉伸的力学性能;提出了空间曲面纤维网格加固水下混凝土柱的施工工艺,并进行了轴压试验研究,试验结果表明:空间曲面纤维网格加固水下混凝土试件的轴压性能明显优于未加固混凝土圆柱试件,随着纤维网格纤维用量的增加,加固试件的承载能力和变形能力能有效提高,并取得和陆上试件相近的加固效果,根据纤维网格约束量的不同,水下加固试件的应力-应变曲线表现为软化、强化与临界行为,采用现有FRP约束混凝土模型能够较好地预测空间曲面纤维网格加固水下混凝土的极限应力与极限应变。

关键词：混凝土结构空间曲面水下加固技术纤维网格力学性能

The analysis for stress-strain characteristics of concrete cutoff wall built in deep cladding foundation

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Journal of Energy and Power Engineering 2009年第3期2卷 47-52页

作者： LI Yan-long LI Shou-yi WANG Rui-jun GENG ji-ji zhang Xiao-fei Institute of Water Resources and Hydro-electric Engineering Xi ＇an University of Technology Xi ＇an 710048 China

Combined with a proposed homogeneous earth dam in deep cladding foundation, Duncan E-B model is applied to simulate dam-filled material, apply to three-dimensional nonlinear finite element method, attain the stress-strain distribution and alteration in concrete cutoff wall in completion and water storage periods, analysis the stress state in the contact element between concrete cutoff wall and cladding foundation, provide the corresponding measures. The calculation results show that the design of concrete cutoff wall and homogeneous earth dam is reasonable.

关键词： deep cladding foundation homogeneous earth dam concrete cutoff wall stress-strain

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Splenogonadal fusion

Chinese Medical Journal 2008年第4期121卷 383-384页

作者： SHEN Xiao-cao DU Chuan-jun CHEN ji-min zhang Zhe-wei QIU Yi-qing Department of Urology Second Affiliated Hospital of Zhejiang University School of Medicine Hangzhou Zhejiang 310009 China

Splenogonadal fusion is a rare congenital anomaly, which is described as abnormal fusion between thespleen and gonad or derivatives of the mesonephros. Surgical exploration is generally performed to rule out malignanc... 详细信息

关键词： testis spleen splenogonadal fusion

Menorrhagia and Uterine Volume Associated with Lower Urinary Tract Symptoms in Patients with Adenomyosis

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Chinese Medical Journal 2017年第13期130卷 1552-1556页

作者： Ting Li Xiao-Xuan Xu Yi Dai jun-ji zhang jing-He Lang jin-Hua Leng Department of Obstetrics and Gynecology Peking Union Medical College Hospital Chinese Academy of Medical Science and Peking Union Medical College Beijing 100730 China

Background： Adenomyosis is a gynecological disorder with symptoms most presenting as dysmenorrhea and heavy menstrual bleeding. However, the presence of lower urinary tract symptoms （LUTS） among women with adenomyosis remains unclear. This study was designed to determine the prevalence of LUTS and factors related to the severity of these symptoms in this population. Methods： From July 2016 to November 2016, a total of 298 untreated symptomatic adenomyosis patients and 280 age-matched controls were enrolled. Demographics, LUTS, pain symptoms, ultrasouographic uterine size, and serum CA125 level were recorded. LUTS were evaluated using the International Prostate Symptom Score （IPSS） questionnaire. Factors related to the severity of LUTS were detected using the logistic regression analysis presented as odds ratio （OR） and 95% confidence interval （CI）. Results： Compared with the control group, patients with adenomyosis had a greater IPSS total （4 [2-8] vs. 2 [0-3], Z = -8.159, P 〈 0.001 ）, IPSS storage （2 [1-4] vs. [[0 2], Z = -7.361 [P 〈 0.001）, and I PSS voiding （2 [0-4] vs. 0 [0-1], Z = -7.[94, P 〈 0.001）. Of the patients with adenomyosis, 30.2% had moderate-to-severe lower urinary tract symptoms （IPSS 〉8）. The most prevalent LUTS were daytime frequency （40.9%）, lbllowed by nocturia （24.8%）, weak stream （24.2%）, and incomplete emptying （23.5%）. In study group, patients with an IPSS total score ≥8 had higher proportion of menorrhagia （51.1% vs. 30.8%, χ2 = 11. 162 P = 0.025） and larger uterine volumes （183.3 [109.8-273.8] cm3 vs. 148.5 [96.4-262.7] cm3, Z=- 1.441, P = 0.150） compared to patients with an IPSS total score 〈8. On multivariate logistic regression analysis, patients with menorrhagia were associated with an increased risk of an IPSS total score 〉8 （OR： 2.309, 95% CI： 1.310-4.070, P= 0.004）, an IPSS storage subscore 〉4 （OR： 2.422, 95% CI： 1.395-4.206, P= 0.002）, and an IPSS voiding subscore 〉5 （OR： 1.971, 95% （CI： 1.176-3.302, p= 0.010）. However, patients wi

关键词： Adenomyosis International Prostate Symptom Score Lower Urinary Tract Symptoms

A Bayesian Network Learning Algorithm Based on Independence Test and Ant Colony Optimization

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自动化学报 2009年第3期35卷 281-288页

作者： ji jun-Zhong zhang Hong-Xun HU Ren-Bing LIU Chun-Nian Beijing Municipal Key Laboratory of Multimedia and Intelligent Software Technology College of Computer Science and Technology Beijing University of Technology Beijing 100124 P. R. China

To solve the drawbacks of the ant colony optimization for learning Bayesian networks (ACO-B),this paper proposes an improved algorithm based on the conditional independence test and ant colony optimization (I-ACO-B).First,the I-ACO-B uses order-0 independence tests to effectively restrict the space of candidate solutions,so that many unnecessary searches of ants can be *** then,by combining the global score increase of a solution and local mutual information between nodes,a new heuristic function with better heuristic ability is given to induct the process of stochastic *** experimental results on the benchmark data sets show that the new algorithm is effective and efficient in large scale databases,and greatly enhances convergence speed compared to the original algorithm.

关键词：最优化随机系统自动化 BN