Ruyin Ma

Zhejiang University of Science and Technology

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Dangsheng Xiong

Nanjing University of Science and Technology

Tianzhong Yuan

Zhejiang University of Science and Technology

Yinchao Xu

Zhejiang University of Science and Technology

Daliang Guo

Zhejiang University of Science and Technology

Jinfeng Zhang

Southwest Medical University

Qianyu Sun

Zhejiang University of Science and Technology

Jing Li

Zhejiang University of Science and Technology

Bin Wen

Zhejiang University of Science and Technology

Yan Peng

China University of Petroleum, Beijing

Feng Miao

Nanjing Tech University

Cooperative Institutions

Zhejiang University of Science and Technology

South China University of Technology

Nanjing University of Science and Technology

Chinese Academy of Sciences

Korea University of Science and Technology

University of Science and Technology

Institute of New Materials

Zhejiang Yongning Pharma (China)

Harbin Institute of Technology

Air Force Medical University

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Synergistically improve the strength and porosity of carbon paper by using a novel phenol formaldehyde resin modified with cellulose nanofiber for proton exchange membrane fuel cells

International Journal of Biological Macromolecules (2024)

Bin Wen Ruyin Ma Gang Yang Chongchao Li Yike Huang

Depolymerization

10.1016/j.ijbiomac.2024.134205

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Citations (2)

Aramid Nanofiber-modified Carbon Paper to Enhance Adaptability and Performance of Proton Exchange Membrane Fuel Cells

Colloids and Surfaces A Physicochemical and Engineering Aspects (2024)

Bin Wen Jiahao Feizheng Ruyin Ma Daliang Guo Lizheng Sha

Aramid

Adaptability

Carbon fibers

10.1016/j.colsurfa.2024.135645

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Citations (1)

Preparation and swelling behavior of polyvinyl alcohol physiological saline gel

Journal of Central South University of Technology (2006)

Yusong Pan Dangsheng Xiong Ruyin Ma

Polyvinyl Alcohol

10.1007/s11771-006-0101-x

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Citations (15)

Friction Characteristics of Poly Vinyl Alcohol Hydrogel Against Titanium Alloy Studied by Orthogonal Method

Tribology (2007)

Ruyin Ma

Vinyl alcohol

Distilled water

Coefficient of friction

Lubricity

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Citations (2)

Friction properties of PVA hydrogel against stainless steel ball

Journal of Functional Biomaterials (2006)

Ruyin Ma

The effects of different variable factors on the friction coefficient of poly(vinyl alcohol)(PVA) hydrogel and stainless steel ball counterpart were investigated by ball-pan friction and wear tester.Factors included lubrication condition,sliding speed,diameter of stainless steel ball,and load.It is shown that the free water in PVA hydrogel has a good lubrication on the friction counterpart.The friction coefficients have little difference between dry and lubricants lubrication condition at initial friction test.With the friction test time prolonged,friction coefficient of PVA hydrogel under dry condition increased sharply at short time.Friction coefficient decreased with the increasing sliding speed and diameter of stainless steel ball.It reduced 54.24%,while the sliding speed enhancing from 45r/min to 225r/min.It increased with an increase in load.The rising rate of friction coefficient at low load region is obviously larger than that at high load region.The effect of free water in PVA hydrogel on the friction coefficient gradually enhanced with the increasing load.

Coefficient of friction

Ball (mathematics)

Vinyl alcohol

Dry friction

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Hydrochemical Characteristics and Boron Isotope Geochemistry of Brine in Hoh Xil, Qinghai Province

Ruyin Ma

A study of the hydrochemical characteristics and boron isotope distribution of salt lakes in Hoh Xil region was conducted on the basis of the survey in 2009 and 2010. Besides the Mingjing Lake, Xijinwulan Lake, Lexiewudan Lake, Salt Lake and Cangcuo Lake discovered earlier, the Duoxiu Lake, Chacuo Lake, Bucha Lake and Guomucuomaderi Lake are all salt lakes discovered recently, whose salinities are equal to or higher than 50 g/L. These discoveries have brought the total number of salt lakes in this region to 9. Except for the Lexiewudan salt lake, which is of the chloride type, the remaining 8 salt lakes are of the sulfate type; the boron and lithium are both abundant in the lake water and surrounding waters, and B-Li elements indicate a collaborative growth and decline relationship, suggesting that the material sources, migration conditions and enrichment environment of B is similar to characteristics of Li in this area. The results of Positive Thermal Ionization Mass Spectrometry measurements show that δ11B values are in the range of +4.77‰~+12.52‰, by far lower than the values of seawater, implying that these salt lakes belong to terrigenous nature, which is consistent with the results of previous research on these areas. There are a large number of springs exposed on the northern bank of the Lexiewudan salt lake and Bucha salt lake, and the springs are the primary material sources of these two lakes according to hydrochemical and boron isotopic analysis. The regional tectonic features and boron isotope geochemistry characteristics reveal that the boron element in the Xinqingfeng hot spring is mainly from lixiviation of volcanic rocks in the depth.

Terrigenous sediment

Salt lake

Isotope Geochemistry

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Citations (1)

Friction properties of novel PVP/PVA blend hydrogels as artificial cartilage

Journal of Biomedical Materials Research Part A (2009)

Ruyin Ma Dangsheng Xiong Feng Miao Jinfeng Zhang Yan Peng

Abstract In this work, novel polyvinylpyrrolidone (PVP)/polyvinylalcohol (PVA) blend hydrogels were prepared by repeated freezing‐thawing cycles. The factors that influenced friction properties of blend hydrogels, such as PVP content, contact load, sliding speed, and lubrication condition, were mainly studied by sliding with stainless steel ball. The results showed that friction coefficients of the PVP/PVA blend hydrogels were definitely dependent on such influence factors. The friction system consisting of blend hydrogel and stainless steel ball nearly exhibited a mixed lubrication regime especially under bovine serum lubrication, and it can be proposed as a promising method to reduce wear of the prosthesis. © 2009 Wiley Periodicals, Inc. J Biomed Mater Res, 2010

Polyvinylpyrrolidone

10.1002/jbm.a.32552

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Citations (54)

Synthesis and properties of physically crosslinked poly (vinyl alcohol) hydrogels

Journal of China University of Mining and Technology (2008)

Ruyin Ma Dangsheng Xiong

Vinyl alcohol

10.1016/s1006-1266(08)60057-7

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Citations (31)

Novel PVP/PVA hydrogels for articular cartilage replacement