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Formation mechanism and preparation of YAl_(2) intermetallics by electro-deoxidation with different sintering conditions

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Rare Metals 2023年第3期42卷 1067-1074页

作者： Yue-shan Wei Shi-Hong Yan Lin Zhou De-Hong chen Rui-ying Miao Zhi-Qiang Wang National Engineering Research Center for Rare Earth Materials General Research Institute for Nonferrous MetalsBeijing 100088China Grirem Advanced Materials Co. Beijing 100088China

A study was carried out on the preparation of YAl_(2) intermetallics from mixed oxide precursors using the method of electro-deoxidation.Y2O_(3) and Al_(2)O_(3) mixed in molar proportions of 1:2 were sintered at temperatures ranging from 800 to 12000C for different *** sintered pellet was then electrolyzed in a molten CaCl_(2) at850℃using a graphite anode at a potential of 3.1 *** this work,effects of sintering on the composition and the oxygen content in cathodic products were studied by X-ray diffraction(XRD)and oxygen-nitrogen *** mainly affects the porosity of the pellets,and it is found that porosity decreases gradually with the increase in sintering temperature and the extension of sintering *** sintered at 9000C for 4 h,the oxygen content in the cathodic product decreases to 1.85 wt%,and the efficiency of electro-deoxidation is 94.48%.At the same time,the mechanism of electrolysis was *** results suggest that the formation of YAl_(2) is a multi-step *** the reduction process from mixed oxides Y2O_(3)/Al_(2)O_(3) to YAl_(2) included many intermediate materials,such as YAlO_(3),Y3Al5O12 and YAl3,YAl_(2) intermediate alloy was prepared finally.

关键词： Yttrium aluminum oxide Molten salts YAl_(2)alloy Electro-deoxidation

Voter model in a random environment in Zd

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Frontiers of Mathematics in China 2012年第5期7卷 895-905页

作者： Zhichao shan Dayue chen School of Mathematical Sciences Peking University Beijing 100871 China Center for Statistical Science Peking University Beijing 100871 China

We consider the voter model with flip rates determined by {ue, e ∈ Ed}, where Ed is the set of all non-oriented nearest-neighbour edges in the Euclidean lattice Zd. Suppose that {ue, e ∈ Ed} are independent and identically distributed （i.i.d.） random variables satisfying ue ≥ 1. We prove that when d = 2, almost surely for all random environments, the voter model has only two extremal invariant measures： δ0 and δ1.

关键词： Voter model random walk random environment duality

Influence of Pre-strain on the Mechanical Properties of A6111-T4P Sheet with Bake Hardening

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Acta Metallurgica Sinica(English Letters) 2015年第6期28卷 678-683页

作者： shan-shan Li Jie-Shi chen Jun chen Cedric Xia Danielle Zeng Institute of Forming Technology and Equipment School of Materials Science and Engineering Shanghai Jiao Tong University Research and Innovation Center Ford Motor Company

A6111 is an aluminum alloy, which exhibits good formability and excellent bake hardening property. This study aimed to reveal the influence of strain path, pre-strain orientation （c0 as well as pre-strain level on the mechanical properties of A6111-T4P sheet under bake treatment through uniaxial tension test. （0-5）% pre-strain, 150-170 ℃ bake temperature and 20-30 min bake time were considered in the study by referring to the actual production process. The results show that both pre-strain level and strain path play significant roles in improving the material properties. In the condition that tensile orientation （β） parallel with pre-strain orientation （β= a）, the yield strength can be remarkably improved, and much higher parameter of n in Hockett-Sherby model can be obtained than those when tensile orientation non-parallel with pre-strain orientation （a≠ β）. In addition, when the pre-strain level, paint bake process were settled and β = a, the curves obtained in five tension orientations are similar in the plastic deformation stage.

关键词： Aluminum alloy Pre-strain Bake hardening Mechanical properties

Interleukin-18 Suppresses Angiogenesis and Lymphangiogenesis in Implanted Lewis Lung Cancer

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Chinese Journal of Cancer Research 2010年第4期22卷 303-309页

作者： Sheng Yang Xiang-qi chen Hui-shan Lu Zhi-ying Li Ting-yan Lin Department of Oncology the Union Hospital Fu Jian Medical University Fuzhou 350001 China Department of Respiratory the Union Hospital Fu Jian Medical University Fuzhou 350001 China

Objective： To investigate the effects of interleukin-18 （IL-18） on implanted Lewis lung cancer in suppressing angiogenesis and lymphangiogenesis. Methods： One week after hypodermic inoculation of Lewis cells, sixteen tumor-bearing syngeneic mice were randomly divided into two groups. The mice in the treatment group （group A） were intraperitoneally injected with the IL-18 and in the control group （group B） were intraperitoneally injected with normal saline for 7 days. The mice were killed on day 19. The morphology of the tumors was studied, the growth curve was described and the tumor inhibition rate was calculated. The numbers of metastasized pulmonary colonies were calculated using hematoxylin-eosin （HE） staining. The vascular endothelial growth factor A （VEGF-A）, vascular endothelial growth factor C （VEGF-C）, microvessel density （MVD） and lymphatic microvessel density （LMVD） in tumor mass were measured by immunohistochemistry staining （IHCS）. Results： In the group A, the tumor volume, tumor weigh, lung metastatic nodules, expression of VEGF-A and VEGF-C, MVD were all decreased significantly （P0.01 or P0.05）. The tumor inhibition rate was 75% and the inhibition rate of lung metastatic nodules was 61%. The LMVD in group A was also lower than group B, but without significant difference （P0.05）. Conclusion： IL-18 could suppress the tumor growth and metastasis of implanted Lewis lung cancer by way of down-regulating VEGF-A and VEGF-C expression, suppressing angiogenesis and lymphangiogenesis.

关键词： Interleukin-18 Lung cancer VEGF LMVD

Research of improving the dynamic scheduling algorithm in the CAN bus control networks

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Journal of Systems Engineering and Electronics 2008年第6期19卷 1250-1257页

作者： Wang Liming Shao ying Wang Mingzhe shan Yong Electric and Information Coll. Naval Engineering Univ. Wuhan 430033 P. R. China Huazhong Univ. of Science and Technology Wuhan 430074 P. R. China

Currently, the article analyzes the CAN bus＇s rule of priority＇s arbitration bit by bit without destroy. It elicits the conclusion that if static priority based on the affirmatory system model is used, the lower priority＇s messages will be delayed considerably more, even some data will be lost when the bus＇s bandwidth is widely used. The scheduling cannot be modified neither during the system when static priority is used. The dynamic priority promoting method and the math model of SQSA and SQMA are presented; it analyzes the model＇s rate of taking in and sending out in large quantities, the largest delay, the problems and solutions when using SQMA. In the end, it is confirmed that the method of improving dynamic priority has good performances on the network rate of taking in and sending out in large quantities, the average delay, and the rate of network usage by emulational experiments.

关键词： CAN static scheduling dynamic scheduling single queue single algorithm single queue multi algo-rithm average delay network load rate

Transferring Three-Dimensional Quantum States and Implementing a Quantum Phase Gate Based on Resonant Interaction between Distant Atoms

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Chinese Physics Letters 2012年第9期29卷 17-19页

作者： chen Zi-Hong ZHANG Feng-Yang SHI ying SONG He-shan School of Physics and Optoelectronic Engineering Dalian University of TechnologyDalian 116024

We propose a more efficient and reliable scheme for transferring quantum states between distant atoms than previous schemes based on resonant atom-cavity *** addition,our system can also be used to implement a control... 详细信息

关键词： interaction. resonant addition

Invasive aspergillosis presenting as hilar masses with stenosis of bronchus: A case report

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World Journal of Clinical Cases 2019年第22期7卷 3832-3837页

作者： shan-shan Su ying Zhou Han-Yan Xu Ling-Ping Zhou cheng-Shui chen Yu-Ping Li Key Laboratory of Intervention Pulmonology of Zhejiang Province Department of Pulmonary and Critical Care Medicine The First Affiliated Hospital of Wenzhou Medical University

BACKGROUND Hilar masses with stenosis of the bronchus occur mainly due to malignant diseases,such as lung *** masses resulting from invasive aspergillosis are extremely rare and occur mostly in severely immunosuppressed *** SUMMARY In the current case report,we have documented a unique case of invasive aspergillosis presenting as a mass in the hilum and bronchial stenosis under bronchoscopy mimicking lung cancer in a 54-year-old man with diabetes *** histological analysis of bronchial membrane biopsy demonstrated fungal elements of 45°branching hyphae with positive Periodic Acid-Schiff and Grocott *** 3 mo of antifungal therapy,the symptoms,computed tomography scan and bronchoscopy manifestations all showed *** We highlight that clinicians should consider a diagnosis of invasive aspergillosis when radiological examination shows pseudotumor appearance in diabetes mellitus patients.

关键词： Invasive aspergillosis Lymph nodes Lung cancer Bronchoscopy Casereport

Treatment efficacy of radiof requency ablation of 338 patients with hepatic malignant tumor and the relevant complications

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World Journal of Gastroenterology 2005年第40期11卷 6395-6401页

作者： Min-Hua chen Wei Yang Kun Yan Wen Gao ying Dai Yan-Bin Wang Xiao-Peng Zhang shan-shan Yin Departmentof Ultrasound Peking University School of Oncology 52 Fu-cheng Rd Haidian District Beijing 100036 China

AIM： To investigate the treatment efficacy of radiofrequency ablation （RFA） of hepatic malignant tumor and the relevant complications. METHODS： A total of 338 patients with 763 hepatic tumors underwent ultrasound-guided RFA （565 procedures）. There were 204 cases of hepatic cellular carcinoma （HCC） with 430 tumors, the mean largest diameter was 4.0 cm. Of them, 48 patients （23.5%） were in stages Ⅰ-Ⅱ （UICC Systems） and 156 （76.5%） in stages Ⅲ-Ⅳ There were 134 cases of metastatic liver carcinoma （MLC）, with 333 metastases in the liver, the mean diameter was 4.1 cm, the liver metastases of 96 patients （71.6%） came from gastrointestinal tract. Ninety-three percent of the 338 patients were treated using the relatively standard protocol. Crucial attention must be paid to monitor the abnormal changes in ultrasound images as well as the vital signs of the patients to find the possible hemorrhage and peripheral structures injury in time. The tumors were considered as ablated completely, if no viability was found on enhanced CT within 24 h or at 1 mo after RFA. These patients were followed up for 3-57 too. RESULTS： The ablation success rate was 93.3% （401/430 tumors） for HCC and was 96.7% （322/333 tumors） for MLC. The local recurrence rate for HCC and MLC was 7.9% （34/430 tumors） and 10.5% （351333 tumors）, respectively. A total of 137 patients （40.5%） underwent 2-11 times of repeated ablations because of tumor recurrence or metastasis. The 1st, 2nd, and 3rd year survival rate was 84.6%, 66.6%, and 63.1%, respectively; the survival rate from 48 patients of I-II stage HCC was 93.7%, 80.4%, and 80.4%, respectively. The major complication rate in this study was 2.5% （14 of 565 procedures）, which consisted of 5 hemorrhages, i colon perforation, 5 injuries of adjacent structures, 2 bile leakages, and 1 skin burn. CONCLUSION： RFA, as a minimally invasive local treatment, has become an effective and relatively safe alternativefor the patients of hepatic malignant tumor, even of advanc

关键词： Radiofrequency ablation Liver neoplasms Survival Complication Ultrasonography

Metabolic syndrome and gallstone disease

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World Journal of Gastroenterology 2012年第31期18卷 4215-4220页

作者： Li-ying chen Qiao-Hua Qiao shan-Chun Zhang Yu-Hao chen Guan-Qun Chao Li-Zheng Fang Department of Family Medicine Sir RunRun Shaw Hospital Zhejiang University Hangzhou 310016Zhejiang Province China Department of Epidemiology and Biosta-tistics School of Public Health Zhejiang University Hangzhou310058 Zhejiang Province China

AIM： To investigate the association between metabolic syndrome （NetS） and the development of gallstone disease （GSD）. METHODS： A cross-sectional study was conducted in 7570 subjects （4978 men aged 45.0：1：8.8 years, and 2592 women aged 45.3：1：9.5 years） enrolled from the physical check-up center of the hospital. The subjects included 918 patients with gallstones （653 men and 265 women） and 6652 healthy controls （4325 men and 2327 women） without gallstones. Body mass index （BII）, waist circumference, blood pressure, fasting plasma glucose （FPG） and serum lipids and lipoproteins levels were measured. Colorimetric method was used to measure cholesterol, high-density lipoprotein cho- lesterol （HDL-C） and low-density lipoprotein cholesterol （LDL-C）. Dextrose oxidizing enzyme method was used to measure FPG. Subjects were asked to complete a questionnaire that enquired about the information on demographic data, age, gender, histories of diabetes mellitus, hypertension, and chronic liver disease and so on. Metabolic syndrome was diagnosed according to the Adult Treatment Panel HI （ATP ]3） criteria. Gall- stones were defined by the presence of strong intralu- minal echoes that were gravity-dependent or attenu- ated ultrasound transmission. RESULTS： Among the 7570 subjects, the prevalence of the gallstone disease was 12.1% （13.1% in men and 10.2% in women）. BMI, waist circumference, systolic blood pressure, diastolic blood pressure, fasting blood glucose and serum triglyceride （TG） in cases group were higher than in controls, while serum high-density lipid was lower than in controls. There were significant differences in the waist circumference, blood pressure, FPG and TG between cases and controls. In an age- adjusted logistic regression model, metabolic syndrome was associated with gallstone disease. The age-adjust- ed odds ratio of MetS for GSD in men was 1.29 [95% confidence interval （CI）, 1.09-1.52; P = 0.0030], and 1.68 （95% CI, 1.26-2.25; P = 0.0004） in women; the overa

关键词： Gallstone disease Obesity Hypertension Dyslipidemia Metabolic syndrome