Resource Type

Journal Article 257

Year

2024 1

2023 19

2022 23

2021 22

2020 17

2019 11

2018 14

2017 17

2016 16

2015 11

2014 7

2013 11

2012 8

2011 9

2010 8

2009 13

2008 17

2007 12

2006 4

2005 1

open ︾

Keywords

Bohai Strait 4

Big data 2

Carbon dioxide 2

China 2

FY-3 satellite 2

development 2

different 2

hydrogenation 2

management system 2

10Fe-xCu/TiO2 1

13X-type zeolite 1

2-aminopyridine 1

20th century 1

25-furandicarboxylic acid 1

4 1

5-hydroxymethylfurfural 1

6-DMDBT) 1

6-dimethyldibenzothiophene (4 1

in situ IR spectroscopy 1

open ︾

Search scope:

排序： Display mode:

Combined static mixers for high viscous fluids mixing

Zhenhao XI, Weizhen SUN, Ling ZHAO, Zhaoyan LIU

Frontiers of Chemical Science and Engineering 2009, Volume 3, Issue 1,   Pages 93-96 doi: 10.1007/s11705-009-0112-x

Abstract: A new static mixer Cross-over-Disc has been invented to strip off the boundary layer and to make strongThe pressure drop of Cross-over-Disc is 12—26 times as large as that of empty pipe with equivalent diameterThe mixing performance of Cross-over-Disc with 14 elements has been investigated in the viscosity rangeFurthermore, mixing inhomogeneity for a combination of static mixing elements (four from Cross-over-Disc

Keywords： static mixer     Cross-over-Disc     pressure drop     mixing performance     high viscous fluid    

HTML PDF Collect

RESPONSE OF WHEAT COMPOSITE CROSS POPULATIONS TO DISEASE AND CLIMATE VARIATION OVER 13 GENERATIONS

Frontiers of Agricultural Science and Engineering 2021, Volume 8, Issue 3,   Pages 400-415 doi: 10.15302/J-FASE-2021394

Abstract:

Since the F5 (2005), three winter wheat composite cross populations (CCPs) based on

Keywords： evolutionary breeding     heterogeneous crop population     management system    

HTML PDF Collect

Vibration analysis of blade-disc coupled structure of compressor

WANG Chunjie, SONG Shunguang, ZONG Xiao

Frontiers in Energy 2008, Volume 2, Issue 3,   Pages 302-305 doi: 10.1007/s11708-008-0064-8

Abstract: While a 3D assembly model of blade-disc structure was established, a finite element model for calculatingthe vibration characteristics during blade-disc coupling was built by taking into consideration thecoupling action of contact stress between the blade and the disc.The vibration characteristics of the blade-disc coupling structure was calculated and analyzed using

Keywords： blade-disc coupling     assembly     experiment     vibration     blade-disc structure    

HTML PDF Collect

Wear mechanism of disc-brake block material for new type of drilling rig

WANG Xinhua, WANG Simin, ZHANG Siwei, WANG Deguo

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 1,   Pages 10-16 doi: 10.1007/s11465-008-0009-2

Abstract: To improve friction and wear performance and service life of the disc-brake pair material of a drillingrig, a new type of asbestos-free frictional material with better performance for disc-brake blocks isAt the beginning of wear, the hard peaks from the friction surface of the disc-brake plough on the surface

Keywords： asbestos-free frictional     Fracture     cyclization     friction     disc-brake    

HTML PDF Collect

Analysis of load and adaptability of disc cutters during shield tunneling in soft–hard varied strata

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 4,   Pages 533-545 doi: 10.1007/s11709-023-0946-1

Abstract: The disc cutters of shield machines exhibit unsatisfactory adaptability and performance during the soft–hardTo analyze the rotation state, cutting performance, and adaptability of disc cutters during shield tunnelingAdditionally, the parameters of the models are modified based on laboratory disc cutter excavation testThe results of numerical calculation can reflect the load level and the behavior of the disc cuttersThe disc cutters in the center of the cutterhead should be specified with a lower starting torque to

Keywords： shield tunneling     disc cutter load     laboratory excavation test     numerical calculation     soft–hard varied    

HTML PDF Collect

Field and laboratory experimental studies on hard-rock tunnel excavation based on disc cutter coupled

Frontiers of Structural and Civil Engineering   Pages 1370-1386 doi: 10.1007/s11709-023-0947-0

Abstract: The tunnel boring machine (TBM) is typically used in hard-rock tunnel excavation. Owing to the unsatisfactory adaptability of TBM to the surrounding rock, when crossing high-strength and high-wear strata, the TBM can easily cause defects, such as abnormal wear on cutters and overload damage to bearings, thus affecting the construction efficiency and cost. Therefore, high-pressure waterjet technology should be applied to assist in rock breaking for efficient TBM tunneling. In this study, the effects of water pressure, nozzle diameter, and nozzle speed on cutting are investigated via laboratory experiments of cutting hard rock using high-pressure waterjets. The penetration performance of the TBM under different water pressures is investigated via a field industrial penetration test. The results show that high-pressure waterjets are highly efficient for rock breaking and are suitable for industrial applications, as they can accommodate the advancing speed of the TBM and achieve high-efficiency rock breaking. However, during the operation of high-pressure waterjets, the ambient temperature and waterjet temperature in the tunnel increase significantly, which weakens the cooling effect of the cutterhead and decreases the construction efficiency of the TBM. Therefore, temperature control and cooling measures for high-pressure waterjets during their long-term operation must be identified. This study provides a useful reference for the design and construction of high-pressure water-jet-assisted cutterheads for breaking road headers.

Keywords： tunnel boring machine     hard-rock cutting     free face     disc cutter     rock-cutting efficiency    

HTML PDF Collect

Effects of inclination angles of disc cutter on machining quality of Nomex honeycomb core in ultrasonic

Yidan WANG, Renke KANG, Yan QIN, Qian MENG, Zhigang DONG

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 2,   Pages 285-297 doi: 10.1007/s11465-021-0631-9

Abstract: Ultrasonic cutting with a disc cutter is an advanced machining method for the high-quality processingHowever, in existing research, the effect of the disc cutter orientation on the machining quality hasnot been studied in depth, and practical guidance for the use of disc cutters is lacking.In this work, the inclined ultrasonic cutting process with a disc cutter was analyzed, and cutting experimentsThis study investigates the influence of the inclination angles of a disc cutter on the machining quality

Keywords： Nomex honeycomb core     disc cutter     inclined ultrasonic cutting     machining quality    

HTML PDF Collect

Performance of landfill leachate treatment system with disc-tube reverse osmosis units

WANG Baozhen, LIU Shuo, LIU Yanping, LI Xiujin

Frontiers of Environmental Science & Engineering 2008, Volume 2, Issue 1,   Pages 24-31 doi: 10.1007/s11783-008-0024-x

Abstract: Reverse osmosis system with the disc-tube module (DT-RO) was applied to treat landfill leachate on fullTOC), electrical conductivity (EC), and ammonia nitrogen (NH-N) reached 99.2–99.7%, 99.2%, 99.6%, and overThe rejection of Ca, Ba, and Mg was over 99.9%, respectively.

Keywords： chemical cleaning     product     organic     nitrogen     Effective    

HTML PDF Collect

Best operating conditions to produce hydroxyapatite nanoparticles by means of a spinning disc reactor

A. F. D’ Intino,B. de Caprariis,M.L. Santarelli,N. Verdone,A. Chianese

Frontiers of Chemical Science and Engineering 2014, Volume 8, Issue 2,   Pages 156-160 doi: 10.1007/s11705-014-1427-9

Abstract: hydroxyapatite (Mg-HAP) nanoparticles were produced by a reaction-precipitation process by using a spinning discIn particular, they were 51 nm in average size when the two reagents were fed over the disc symmetricallyat 3 cm from the disc center and a rotational speed of the disc reactor equal to 1400 r/min was adopted

Keywords： hydroxyapatite     nanoparticles     spinning disc reactor    

HTML PDF Collect

Adenovirus-mediated tissue inhibitor of metalloproteinase-3 gene transfection inhibits rabbit intervertebral disc

Xudong YU MM, Zengwu SHAO MD, Liming XIONG MD, Weiwei XU MM, Hezhong WANG MM, Huifa XU MM,

Frontiers of Medicine 2009, Volume 3, Issue 4,   Pages 415-420 doi: 10.1007/s11684-009-0072-z

Abstract: carrying tissue inhibitor of metalloproteinase-3 (RAdTIMP-3) against degeneration of rabbit intervertebral discMild or moderate rabbit lumbar disc degeneration model was constructed with the controllable axial loadingSafranin O-Fast green staining and type II collagen staining demonstrated better reserved integrity of discRAdTIMP-3 can effectively protect the matrix of rabbit intervertebral disc against overloading-induceddegeneration in a dose-dependent manner, resulting in the alleviation of disc degeneration.

Keywords： tissue inhibitor of metalloproteinase-3     intervertebral disc     rabbit     gene therapy    

HTML PDF Collect

Methods and applications of DEA cross-efficiency: Review and future perspectives

Jie WU, Jiasen SUN, Liang LIANG

Frontiers of Engineering Management 2021, Volume 8, Issue 2,   Pages 199-211 doi: 10.1007/s42524-020-0133-1

Abstract: To address this problem, scholars have proposed the cross-efficiency evaluation (CREE) method.reviews the theory and applications of CREE, including the non-uniqueness problem, the aggregation of cross-efficiency

Keywords： cross-efficiency evaluation     efficiency     secondary goal model     aggregation     review    

HTML PDF Collect

Prevalence and determinations of physical inactivity among public hospital employees in Shanghai, China: a cross-sectional

Xinjian Li,Minna Cheng,Hao Zhang,Ting Ke,Yisheng Chen

Frontiers of Medicine 2015, Volume 9, Issue 1,   Pages 100-107 doi: 10.1007/s11684-014-0372-9

Abstract: A cross-sectional study of 4612 employees aged 19 to 68 years was conducted through stratified cluster

Keywords： prevalence     determination     employee     public hospital     cross-sectional study     physical inactivity    

HTML PDF Collect

Study of cold sky calibration and geophysical parameters retrieval for HY-2A satellite scanning microwave radiometer

Zhou Wu,Lin Mingsen,Li Yanmin,Wang Zhenzhan and Huang Lei

Strategic Study of CAE 2013, Volume 15, Issue 7,   Pages 75-80

Abstract:

HY-2A scanning microwave radiometer cold shy calibration method and Geophysical parameters retrieval algorithm were studied. According to HY-2A satellite scanning microwave radiometer on observation and scanning design principle and observation geometry, the earth's signal into cold reflector based on the earth observation data of microwave radiometer was corrected, and cold sky reflector weight coefficient matrix by the ground observation brightness temperature to correction cold sky observation signal was established. Based on the sea surface temperature, sea surface wind speed, moisture content and cloud liquid content and microwave radiometer radiative transfer model, HY-2A scanning microwave radiometer model theory brightness temperature under different conditions of each frequency and polarization was calculated, and a linear regression model was established to fit different geophysical parameters retrieval coefficient, using multiple linear regression algorithm retrieving HY-2A microwave scanning radiometer geophysical parameters, compared to international microwave radiometer data, and the product accuracy was obtained.

Keywords： scanning microwave radiometer     multiple linear regression     multi satellites cross over     cold shy calibration    

HTML PDF Collect

River Chief System (RCS): An experiment on cross-sectoral coordination of watershed governance

Longfei Wang, Jiaxin Tong, Yi Li

Frontiers of Environmental Science & Engineering 2019, Volume 13, Issue 4, doi: 10.1007/s11783-019-1157-9

Abstract: The River Chief System (RCS) has experienced swift developments over the past decade in China by appointing

Keywords： River Chief System     Watershed governance     Cross-sectoral coordination     Environmental protection    

HTML PDF Collect

Air bearing center cross gap of neutron stress spectrometer sample table support system

Yang LI,Yunxin WU,Hai GONG,Xiaolei FENG

Frontiers of Mechanical Engineering 2016, Volume 11, Issue 4,   Pages 403-411 doi: 10.1007/s11465-016-0405-y

Abstract: To study the performance of air bearing center cross gap, finite element models (FEMs) were establishedsupply pressure, and gap parameters on the overturning moment and bearing capacity of air bearing center cross

Keywords： neutron stress spectrometer     sample table     support system     air bearing     center cross gap     simulation     experiment    

HTML PDF Collect

Title Author Date Type Operation

Combined static mixers for high viscous fluids mixing

Zhenhao XI, Weizhen SUN, Ling ZHAO, Zhaoyan LIU

Journal Article

RESPONSE OF WHEAT COMPOSITE CROSS POPULATIONS TO DISEASE AND CLIMATE VARIATION OVER 13 GENERATIONS

Journal Article

Vibration analysis of blade-disc coupled structure of compressor

WANG Chunjie, SONG Shunguang, ZONG Xiao

Journal Article

Wear mechanism of disc-brake block material for new type of drilling rig

WANG Xinhua, WANG Simin, ZHANG Siwei, WANG Deguo

Journal Article

Analysis of load and adaptability of disc cutters during shield tunneling in soft–hard varied strata

Journal Article

Field and laboratory experimental studies on hard-rock tunnel excavation based on disc cutter coupled

Journal Article

Effects of inclination angles of disc cutter on machining quality of Nomex honeycomb core in ultrasonic

Yidan WANG, Renke KANG, Yan QIN, Qian MENG, Zhigang DONG

Journal Article

Performance of landfill leachate treatment system with disc-tube reverse osmosis units

WANG Baozhen, LIU Shuo, LIU Yanping, LI Xiujin

Journal Article

Best operating conditions to produce hydroxyapatite nanoparticles by means of a spinning disc reactor

A. F. D’ Intino,B. de Caprariis,M.L. Santarelli,N. Verdone,A. Chianese

Journal Article

Adenovirus-mediated tissue inhibitor of metalloproteinase-3 gene transfection inhibits rabbit intervertebral disc

Xudong YU MM, Zengwu SHAO MD, Liming XIONG MD, Weiwei XU MM, Hezhong WANG MM, Huifa XU MM,

Journal Article

Methods and applications of DEA cross-efficiency: Review and future perspectives

Jie WU, Jiasen SUN, Liang LIANG

Journal Article

Prevalence and determinations of physical inactivity among public hospital employees in Shanghai, China: a cross-sectional

Xinjian Li,Minna Cheng,Hao Zhang,Ting Ke,Yisheng Chen

Journal Article

Study of cold sky calibration and geophysical parameters retrieval for HY-2A satellite scanning microwave radiometer

Zhou Wu,Lin Mingsen,Li Yanmin,Wang Zhenzhan and Huang Lei

Journal Article

River Chief System (RCS): An experiment on cross-sectoral coordination of watershed governance

Longfei Wang, Jiaxin Tong, Yi Li

Journal Article

Air bearing center cross gap of neutron stress spectrometer sample table support system

Yang LI,Yunxin WU,Hai GONG,Xiaolei FENG

Journal Article