Search results for: Junxian Zhao

Items from 1 to 16 out of 16 results

article

Tailoring Surface Frustrated Lewis Pairs of Mo‐Doped Porous Ultrathin Carbon Nitride for Photocatalytic Nitrogen Fixation

Zhao Mo, Guanyu Wu, Junxian Zhao, Limin Yu, more

physica status solidi (a) > 219 > 24 > n/a - n/a

Frustrated Lewis pairs (FLPs), new catalysts with pairs of spatially frustrated Lewis acid and Lewis bases within or between molecules, have aroused high attention due to their strong activation ability for inert small molecules such as CO₂ and N₂. Herein, Mo is introduced as a Lewis acid site to endow porous ultrathin carbon nitride (g‐C₃N₄) with FLPs‐like properties. The as‐prepared Mo‐doped porous...

article

Effect of gusset connection configurations on frame–gusset interaction in steel buckling‐restrained braced frame

Junxian Zhao, Ruobing Chen, Yun Zhou, Haichao Yu, more

The Structural Design of Tall and Special Buildings > 28 > 5 > n/a - n/a

Although buckling restrained braces (BRBs) are commonly applied in seismic buildings to mitigate structural damage, their performance was often limited by rupture of the corner gusset connections due to additional frame action. This issue may be resolved by alternative gusset connections to mitigate the frame–gusset interaction. In this study, commonly used procedures for design of the traditional...

article

Sliding corner gusset connections for improved buckling-restrained braced steel frame seismic performance: Subassemblage tests

Junxian Zhao, Ruobing Chen, Zhan Wang, Yi Pan

Engineering Structures > 2018 > 172 > C > 644-662

Although brace-type hysteretic dampers have been widely adopted to mitigate structural damage under severe earthquakes, their performance was often limited by premature rupture of the welded corner gusset connection or its surrounding framing members due to additional frame action. Such a frame-gusset interaction was found more detrimental for buckling-restrained braced frames (BRBFs). A sliding corner...

article

A novel non-iterative direct displacement-based seismic design procedure for self-centering buckling-restrained braced frame structures

Lu Liu, Shuang Li, Junxian Zhao

Bulletin of Earthquake Engineering > 2018 > 16 > 11 > 5591-5619

Self-centering buckling-restrained braces (SCBRBs) were proposed recently to minimize residual deformation of the braces induced by yielding or buckling. Although earthquake resilience of structures equipped with the SCBRBs can be well achieved using displacement based designs (DBDs), previously proposed DBD procedures generally involve iterations. In this study, a novel direct displacement-based...

article

Nonlinear displacement ratio for seismic design of self-centering buckling-restrained braced steel frame considering trilinear hysteresis behavior

Lu Liu, Junxian Zhao, Shuang Li

Engineering Structures > 2018 > 158 > C > 199-222

Self-centering buckling-restrained braced steel frames (SCBRBFs) have drawn increasing attention due to the resilience of this kind of structural system in post-earthquake repair. Constant-strength reduction factor (constant-R) inelastic displacement ratio (C_R) can be used for direct inelastic displacement evaluation or design of SCBRBFs. In previous studies, bilinear hysteresis assumption was generally...

article

Seismic design of buckling-restrained brace welded end connection considering frame action effects: Theoretical, numerical and practical approaches

Junxian Zhao, Fuxiong Lin, Zhan Wang

Engineering Structures > 2017 > 132 > C > 761-777

The negative effect of in-plane frame action on the performance of buckling-restrained brace (BRB) end connections was confirmed experimentally in the authors’ prior work. The triggering moment induced by rigid-body rotation of BRB ends, and the amplified moment resulting from bending and semi-rigid effects of the connections, were found to be responsible for premature in-plane buckling of the BRB...

article

A novel pentacyclic triterpenoid, Ilexgenin A, shows reduction of atherosclerosis in apolipoprotein E deficient mice

Chang Liu, Junxian Zhao, YunXing Liu, Yi Huang, more

International Immunopharmacology > 2016 > 40 > C > 115-124

Ilexgenin A (IA), a novel pentacyclic triterpenoid, is a compound extracted from leaves of Ilex hainanensis Merr. In this study, we explored the efficacy of IA on atherosclerosis and its underlying mechanism. We determined that treatment with IA attenuated atherosclerosis in high-fat diet-induced apolipoprotein E deficient mice via a series of effects involving regulation of lipid parameters, decrease...

article

Effect of non‐moment braced frame seismic deformations on buckling‐restrained brace end connection behavior: Theoretical analysis and subassemblage tests

Junxian Zhao, Fuxiong Lin, Zhan Wang

Earthquake Engineering & Structural Dynamics > 45 > 3 > 359 - 381

In‐plane buckling‐restrained brace (BRB) end rotation induced by frame action is a commonly observed phenomenon in buckling‐restrained braced frames (BRBFs). However, its effect on BRB end connection behavior has not yet been clear. In this study, four BRB end deformation modes for quick determination of end rotational demand are proposed for non‐moment BRBF considering different BRB arrangements,...

article

Effects of Xuezhikang in patients with dyslipidemia: A multicenter, randomized, placebo-controlled study

Patrick M. Moriarty, Eli M. Roth, Adam Karns, Ping Ye, more

Journal of Clinical Lipidology > 2014 > 8 > 6 > 568-575

Xuezhikang (XZK) is an extract of fermented red yeast rice that has lipid-lowering properties.To evaluate the effects of XZK on lipids in subjects with dyslipidemia but no coronary heart disease.A total of 116 adults with baseline non−high-density lipoprotein cholesterol (non−HDL-C) levels of approximately 208 mg/dL and low-density lipoprotein cholesterol (LDL-C) levels of approximately 175 mg/dL...

article

Local buckling behavior of steel angle core members in buckling-restrained braces: Cyclic tests, theoretical analysis, and design recommendations

Junxian Zhao, Bin Wu, Wei Li, Jinping Ou

Engineering Structures > 2014 > 66 > Complete > 129-145

The local stability of buckling-restrained braces (BRBs) is one of the most concerned issues. However, few discussions were conducted on the BRBs using section steel or welded cruciform core members, and the currently proposed methods concentrated on the design of casing only. In this study, incremental cyclic tests were conducted on eight BRB specimens using steel angle core members. Key parameters...

article

A practical and unified global stability design method of buckling-restrained braces: Discussion on pinned connections

Junxian Zhao, Bin Wu, Jinping Ou

Journal of Constructional Steel Research > 2014 > 95 > Complete > 106-115

The end bending moment induced by brace end rotation was recently found to have a negative effect on the global stability of buckling-restrained braces (BRBs). The proposed bending moment functions for the BRBs with traditional pinned connections, however, were found to be too complicated from practical view. Also, the relationship between the flexural behavior of BRBs and the brace end details has...

article

Global stability design method of buckling-restrained braces considering end bending moment transfer: Discussion on pinned connections with collars

Junxian Zhao, Bin Wu, Jinping Ou

Engineering Structures > 2013 > 49 > Complete > 947-962

The negative effect of end bending moment on the global stability of pin-connected buckling-restrained braces (BRBs) with end collars was validated in the authors’ prior testing. Although this is a common issue for all types of BRBs, the corresponding effect has not yet been considered in the traditional design method. In this paper, the analytical models are first proposed based on the configurations...

article

Effect of brace end rotation on the global buckling behavior of pin-connected buckling-restrained braces with end collars

Junxian Zhao, Bin Wu, Jinping Ou

Engineering Structures > 2012 > 40 > Complete > 240-253

The effect of brace end rotation on the global stability of buckling-restrained braces (BRBs) is a common but unaddressed issue in design. To further investigate this issue, component tests of nine pin-connected BRBs with end collars were conducted, in which the effects of brace end rotation, the gap between the core and the casing, the gap between the collar and the casing and the stiffness and strength...

article

A novel type of angle steel buckling‐restrained brace: Cyclic behavior and failure mechanism

Junxian Zhao, Bin Wu, Jinping Ou

Earthquake Engineering & Structural Dynamics > 40 > 10 > 1083 - 1102

A novel type of angle steel buckling‐restrained brace (ABRB) has been developed for easier control on initial geometric imperfection in the core, more design flexibility in the buckling restraining mechanism and easier assembly work. The steel core is composed of four angle steels to form a non‐welded cruciform shape restrained by two external angle steels, which are welded longitudinally to form...

article

Tests of hysteretic behavior for unbonded steel plate brace encased in reinforced concrete panel

Yukun Ding, Yaochun Zhang, Junxian Zhao

Journal of Constructional Steel Research > 2009 > 65 > 5 > 1160-1170

Quasi-static tests for ten pieces of the unbonded steel plate brace encased in reinforced concrete panel, which is referred to as the panel buckling-restrained brace (panel BRB), have been carried out. The effects of some constructional details, such as unbonded material, clearance between the panel and the brace, configuration of the steel bar and the edge reinforcement, effective width of the panel,...

article

Influence of cosmic radiation on lymphocyte micronucleus, serum lipid peroxide and antioxidation capacity in aircrew members

Weiru Chen, Yingjin Feng, Jiangkuang Liu, Haili Zhang, more

Chinese Science Bulletin > 2002 > 47 > 8 > 647-653

This study looks into the influence of cosmic radiation at high altitudes on human bodies. Results reveal that the cytokinesis-block micronuclei (CBMN) and conventional cultured micronuclei in peripheral blood lymphocytes, serum levels of lipid peroxide, Superoxide dismutase, and the total antioxidation capacity by chemical colorimetry all increased significantly in aircrew members. There exists a...

Filter options

Publication date

Last 3 years (1)

Close

Date range setting

Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.

From:

To:
Set your own date range

Keywords

BUCKLING-RESTRAINED BRACE (7)
FRAME ACTION (4)
BUCKLING‐RESTRAINED BRACE (3)
END BENDING MOMENT (3)
ATHEROSCLEROSIS (2)
BRACE END ROTATION (2)
BRACED FRAME (2)
CONNECTION (2)
GLOBAL STABILITY (2)
GUSSET CONNECTION (2)
HYSTERETIC DAMPER (2)
ROTATION (2)
SEISMIC PERFORMANCE (2)
AIRCREW (1)
AMMONIA SYNTHESIS (1)
ANGLE STEEL (1)
ANTIOXIDATION CAPACITY (1)
BUCKLING HALF-WAVE LENGTH (1)
CARBON NITRIDE (1)
CHOLESTEROL (1)
COMPRESSION‐FLEXURE FAILURE (1)
COSMIC RADIATION (1)
CYCLIC BEHAVIOR (1)
DESIGN CRITERION (1)
DISPLACEMENT-BASED DESIGN (1)
END MOMENT (1)
FLEXURAL MOMENT (1)
GAP (1)
GLOBAL BUCKLING (1)
GUSSET PLATE (1)
HYSTERETIC BEHAVIOR (1)
ILEXGENIN A (1)
INELASTIC DISPLACEMENT RATIO (1)
INFLAMMATION (1)
LIPID DISORDER (1)
LIPID PEROXIDE (1)
LOCAL BUCKLING (1)
LOCAL FAILURE OF PANEL (1)
LOVASTATIN (1)
MICRONUCLEUS (1)
MO DOPING (1)
MOMENT AMPLIFICATION FACTOR (1)
NON-ITERATIVE PROCEDURE (1)
NONLINEAR DISPLACEMENT RATIO (1)
OXIDIZED LOW-DENSITY LIPOPROTEIN (1)
PANEL BUCKLING-RESTRAINED BRACE (1)
PHOTOCATALYSIS (1)
PINNED CONNECTION (1)
QUASI-STATIC TEST (1)
RED YEAST RICE (1)
R–CR RELATION (1)
SEISMIC DESIGN (1)
SELF-CENTERING (1)
SELF-CENTERING BUCKLING-RESTRAINED BRACE (1)
SIMPLIFIED DESIGN METHOD (1)
STRENGTH REDUCTION FACTOR (1)
THP-1 (1)
TRILINEAR BEHAVIOR (1)
UNBONDED STEEL PLATE BRACE ENCASED IN REINFORCED CONCRETE PANEL (1)
UNIFIED DESIGN METHOD (1)
WIDTH-TO-THICKNESS RATIO (1)
XUEZHIKANG (1)
more

Data set

Elsevier (10)
Wiley (4)
Springer (2)

INFONA - science communication portal

Search results for: Junxian Zhao

Add recipient

Sending message cancelled

Are you sure you want to cancel sending this message?

Send message

Filter options

Publication date

Date range setting

Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.

Keywords

Data set

Journal

Reporting an error / abuse

Sending the report failed

Accessibility options