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Corrosion and wear behavior of an Mg–2Zn–0.2Mn alloy in simulated body fluid

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Rare Metals 2015年第8期34卷 553-559页

作者： De-Bao Liu Bo Wu Xiao Wang min-fang Chen School of Materials Science and Engineering Tianjin University of Technology

In this work, the corrosion behavior of the ascast and extrusion and aging treatment Mg–2Zn–0.2Mn alloy in simulated body fluid(SBF) were studied. The wear behavior of Mg–2Zn–0.2Mn alloy was investigated using pin-on-disk technique and stainless steel as counterbody under a constant sliding velocity at different loads ranging from 2 to 5 N with deionized water and SBF as *** results showed that the extrusion and aging treatment Mg–2Zn–0.2Mn alloy exhibited better corrosion resistance compared with the as-cast alloy due to finer average grain size, more homogeneous phase distribution, and decrease in porosity. The friction coefficient of fractional pair under SBF and deionized water lubrication were obviously lower than that of dry sliding condition. However, the wear rate of Mg–2Zn–0.2Mn alloy under SBF lubrication was higher than that of dry sliding and deionized water lubrication due to the corrosiveness of SBF accelerated the wear of the magnesium alloy. The magnesium alloy exhibited different wear mechanisms with the variety of loads and lubrication conditions.

关键词： Mg–2Zn–0.2Mn alloy Corrosion behavior Wear behavio

Controllability and Its Applications to Biological Networks

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Journal of Computer Science & Technology 2019年第1期34卷 16-34页

作者： Lin Wu min Li Jian-Xin Wang fang-Xiang Wu Division of Biomedical Engineering University of SaskatchewanSaskatoonSK STN 5A9Canada School of Information Science and Engineering Central South UniversityChangsha 410083China Department of Mechanical Engineering University of SaskatchewanSaskatoonSK STN 5A9Canada

Biological elements usually exert their functions through interactions with others to form various types of biological *** ability of controlling the dynamics of biological networks is of enormous benefits to pharmaceutical and medical industry as well as scientific *** there are many mathematical methods for steering dynamic systems towards desired states,the methods are usually not feasible for apply.ng to complex biological *** difficulties come from the lack of accurate model that can capture the dynamics of interactions between biological elements and the fact that many mathematical methods are computationally intractable for large-scale ***,a concept in control theory --controllability,has been applied to investigate the dynamics of complex *** this article, recent advances on the controllability of complex networks and applications to biological networks are *** dynamic models is the prior concern for analyzing dynamics of biological ***,we introduce a widely used dynamic model for investigating controllability of complex *** recent studies of theorems and algorithms for having complex biological networks controllable in general or specific application scenarios are ***,applications to real biological networks manifest that investigating the controllability of biological networks can shed lights on many critical physiological or medical problems,such as revealing biological mechanisms and identify.ng drug targets,from a systematic perspective.

关键词： biological network network controllability steering node

Nickel(Ⅱ) removal from water using silica-based hybrid adsorbents:Fabrication and adsorption kinetics

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Chinese Journal of Chemical Engineering 2016年第10期24卷 1353-1359页

作者： min Xu Junsheng Liu Keyan Hu Congy.ng Xu yaoyao fang Key Laboratory of Membrane Materials and Processes Department of Chemical and Materials EngineeringHefei University

A series of novel silica-based hybrid adsorbents were prepared by the crosslinking reaction of N-[3- （trimethoxysilyl）propyl] ethylene diamine （TMSPEDA） with epichlorohydrin （ECH） via a sol-gel process. Fourier transform infrared （FTIR） spectra confirmed that the reaction occurred. TGA curves showed that the thermal stability of these hybrid adsorbents reached as high as 180 ℃. As a typical example, the adsorption performance of nickel（U） ions onto an adsorbent （the volume ratio of TMSPEDA and ECH was 4：1 ） was explored. It was found that the adsorption of nickel（Ⅱ） ions onto this adsorbent followed the Lagergren pseudo-second-order kinetic model. The investigation of the adsorption mechanism demonstrated that nickel（Ⅱ） adsorption was chiefly controlled by diffusion-chemisorption, suggesting that more diffusion processes were involved in the adsorption of nickel（Ⅱ） ions onto this type of adsorbents. Desorption experiment indicates that these hybrid adsorbents can be regenerated. These findings reveal that this type of silica-based hybrid adsorbent is promising in the separation and recovery of nickel（Ⅱ） ions from Ni-containing wastewater or contaminated water.

关键词： Hybrid adsorbent Nickel(Ⅱ)Kinetics Adsorption Adsorbent

The application of clean production in organic synthesis

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Chinese Chemical Letters 2021年第5期32卷 1637-1644页

作者： Jun Jiang fang Xiao Wei-min He Ley.ng Wang School of Chemistry and Chemical Engineering University of South ChinaHengyang 421001China Xiangya School of Public Health Central South UniversityChangsha 410078China Key Laboratory of Mesoscopic Chemistry of MOE School of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210023China

Clean production,as an important part of green chemistry,has received great attention and considerable development in recent *** this perspective article,we summarized some examples of(nearly)quantitative synthesis,clean separation and purification to emphasize clean *** reactions were carried out by using eco-friendly solvents and the pure products could be easily obtained through clean procedures.

关键词： Green chemistry Green solvent Water Solvent free Purification

Uterine tumor resembling an ovarian sex cord tumor:A case report and review of literature

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World Journal of Clinical Cases 2021年第23期9卷 6907-6915页

作者： fang-fang Zhou y.ng-Tao He y.ng Li min Zhang fang-Hong Chen Department of Ultrasound Lishui Central HospitalThe Fifth Affiliated Hospital of Wenzhou Medical UniversityLishui 323000Zhejiang ProvinceChina Department of Pathology Lishui Central HospitalThe Fifth Affiliated Hospital of Wenzhou Medical UniversityLishui 323000Zhejiang ProvinceChina

BACKGROUND Endometrial stromal tumors originate from the endometrial stroma and account for<2%of all uterine *** tumor resembling an ovarian sex cord tumor(UTROSCT)is a rare histological class of endometrial stromal a... 详细信息

BACKGROUND Endometrial stromal tumors originate from the endometrial stroma and account forng an ovarian sex cord tumor(UTROSCT)is a rare histological class of endometrial stromal and related tumors according to the latest World Health Organization classification of female genital ***,we report a case of UTROSCT in a 51-year-old *** SUMMARy A 51-year-old woman had irregular menses for 6 *** patient visited a local hospital for vaginal *** computed tomography(CT)showed a mass in the pelvic *** days later,she came to our hospital for further *** results of contrast-enhanced CT and pelvic ultrasound at our hospital suggested a malignant pelvic *** then underwent total removal of the uterus with bilateral *** histological examination showed that the tumor cells had abundant cytoplasm,ovoid and spindle-shaped nuclei,fine chromatin,a high nucleoplasm ratio,and a lamellar *** findings were consistent with UTROSCT,and the results of immunohistochemical analysis supported that *** tumor was International Federation of Gynecology and Obstetrics stage *** adjuvant therapy was administered after radical *** patient was followed up for 58 mo,and no recurrence was *** We report a case of UTROSCT with abnormal menstruation as a symptom,which is one of the most common *** patients with vaginal bleeding,ultrasonography can be used as a screening test because of its convenience,speed,and lack of radiation *** patients with long-term tamoxifen use,routine monitoring of the endometrium is *** UTROSCT may have low malignant potential,surgery remains the primary management ***,fertility preservation in patients of childbearing age is a vital consideration.

关键词： Uterine tumor resembling an ovarian sex cord tumor Endometrial stromal tumor Pelvic Irregular menses Surgery Case report

Microstructure and hot ductility behavior of Ni-based superalloy U720Li with boron addition

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Rare Metals 2021年第5期40卷 1145-1154页

作者： Guang-Di Zhao fang Liu Xi-min Zang Wen-Ru Sun School of Material and Metallurgy University of Science and Technology LiaoningAnshan 114051China Institute of Metal Research Chinese Academy of SciencesShenyang 110016China

High-alloyed superalloy U720 Li is difficult to be processed through the conventional cast and wrought *** is an important strengthening element for superalloys,but the role of boron in the hot ductility of U720 Li alloy is not *** study is focused on the effect of boron addition,in the range ofy behavior of superalloy U720 *** is found that boron addition significantly increases the content of eutectic(γ+γ’)and greatly affects the degree of continuity of the grain boundary eutectic(γ+γ’)*** addition dramatically worsens the 1100℃ tensile ductility of conventional cast U720 Li alloy and causes a change in tensile fracture mode from transgranular to *** eutectic(γ+γ’)represents the most effective site for crack *** deteriorates the hot ductility mainly by promoting the continuous precipitation of eutectic(γ+γ’)along the grain boundary.

关键词： Boron U720Li Eutectic(γ+γ’) Hot ductility Fracture mechanism

Primary acinic cell carcinoma of the breast: A case report and review of literature

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World Journal of Clinical Cases 2024年第1期12卷 196-203页

作者： Jia-Sheng Ding min Zhang fang-fang Zhou Department of Intensive Care Unit Lishui Central HospitalThe Fifth Affiliated Hospital of Wenzhou Medical UniversityLishui 323000Zhejiang ProvinceChina Department of Pathology Lishui Central HospitalThe Fifth Affiliated Hospital of Wenzhou Medical UniversityLishui 323000Zhejiang ProvinceChina Department of Ultrasound Lishui Central HospitalThe Fifth Affiliated Hospital of Wenzhou Medical UniversityLishui 323000Zhejiang ProvinceChina

BACKGROUND In the current World Health Organization classification,acinic cell carcinoma(AcCC)of the breast is considered a rare histological subtype of triple-negative breast *** of the few reports in the literature,data concerning clinical outcomes are ***,we report a case of AcCC of the breast in a 48-year-old woman.A 48-year-old woman with a mass in her right breast came to our hospital for further *** and an ultrasound(US)scan showed a mass in the upper inner side of the right *** then underwent surgery to resect the mass in her right *** pathological examination revealed that the tumor had abundant acinar-like structures formed by tumor cells with prominent eosinophilic granules in the cytoplasm,consistent with acinar cell *** results of immunohistochemical analysis supported the diagnosis of breast acinar cell *** months later,she underwent breast-conserving surgery and sentinel lymph node *** pTNM stage was *** surgery,the patient received 30 radiotherapy *** patient was followed up for a period of one year,and no recurrence was *** of the breast is a rare type of malignant *** it is usually asym-ptomatic and can be detected by imaging studies,routine breast US or mamm-ograms are ***,there are no characteristic diagnostic imaging findings or clinical manifestations,so immunohistochemical examination is critical for an accurate diagnosis of AcCC of the breast.

关键词： Acinic cell carcinoma Breast Malignant tumor Immunohistochemical Surgery Case report

Recent progress in two-proton radioactivity

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Nuclear Science and Techniques 2022年第8期33卷 118-146页

作者： Long Zhou Si-min Wang De-Qing fang yu-Gang Ma Key Laboratory of Nuclear Physics and Ion-beam Application(MOE) Institute of Modern PhysicsFudan UniversityShanghai 200433China Shanghai Research Center for Theoretical Nuclear Physics NSFC and Fudan UniversityShanghai 200438China

During the last few decades,rare isotope beam facilities have provided unique data for study.ng the properties of nuclides located far from the beta-stability *** nuclei are often accompanied by exotic structures and radioactive modes,which represent the forefront of nuclear *** them,two-proton(2p)radioactivity is a rare decay mode found in a few highly proton-rich *** 2p decay lifetimes and properties of emitted protons hold invaluable information regarding the nuclear structures in the presence of a low-ly.ng proton continuum;as such,they have attracted considerable research *** this review,we present some of the recent experimental and theoretical progress regarding the 2p decay,including technical innovations for measuring nucleon-nucleon correlations and developments in the models that connect their structural aspects with their decay *** impressive progress should play a significant role in elucidating the mechanism of these exotic decays,probing the corresponding components inside nuclei,and providing deep insights into the open quantum nature of dripline systems.

关键词： Exotic decay Two-proton radioactivity Nucleon-nucleon correlation Experimental and theoretical development

An emerging artificial nanomachine:a nanoengine with a reversible clutch

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Signal Transduction and Targeted Therapy 2024年第9期9卷 3552-3554页

作者： Ziqi fang Jianxin Jiang min Wu School of Medical Information Engineering Gannan Medical UniversityGanzhouChina Wenzhou Institute University of Chinese Academy of SciencesWenzhouChina Wound Trauma Medical Center State Key Laboratory of TraumaBurns and Combined InjuryDaping HospitalArmy Medical UniversityChongqingChina

Recently,a paper published in Nature Nanotechnology,1 describes a magnetically driven spherical rotating nanomotor with a reversible clutch system,capable of precisely regulating the force transmission between the engine and the driving *** innovative design offers a fresh perspective for artificial nanomachines to exert mechanical functions within organisms,and fully demonstrates its potential as a nanomechanical machine in *** in ancient times,rotation was thought to be a human creation,and the anatomy of living things likely indicates that rotational motion cannot exist in living organisms.

关键词： artificial reversible anatomy