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Processing of high-precision ceramic balls with a spiral V-groove plate

Ming FENG,Yongbo WU,Julong YUAN,Zhao PING

Frontiers of Mechanical Engineering 2017, Volume 12, Issue 1,   Pages 132-142 doi: 10.1007/s11465-017-0436-z

Abstract: In this study, a spiral V-groove plate method is employed in processing high-precision ceramic balls.Experimental results demonstrate that the novel spiral V-groove plate method performs better than theconventional concentric V-groove plate method in terms of roundness, surface roughness, diameter difference

Keywords： bearing     ceramic ball     spiral V-groove     kinematic analysis     trajectory    

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Mathematical model and manufacture programming of loxodromic-type normal circular-arc spiral bevel gear

Zhenyun DUAN, Houjun CHEN, Zhilan JU, Jian LIU

Frontiers of Mechanical Engineering 2012, Volume 7, Issue 3,   Pages 312-321 doi: 10.1007/s11465-012-0308-5

Abstract:

In this paper, loxodromic-type normal circular-arc spiral bevel gear is proposed as a novel applicationMoreover, a pair of loxodromic-type normal circular-arc spiral bevel gears is manufactured on computer

Keywords： loxodrome     circular-arc tooth profile     Wildhaber-Novikov (W-N) gear     spiral bevel gear    

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Selection and Verification of the Structural Pattern of the Penstock and Spiral Case of the TGP Power-station

Dai Huichao,Peng Peng

Strategic Study of CAE 2004, Volume 6, Issue 2,   Pages 33-37

Abstract: The article introduced the selection and verification of the structural pattern of the penstock and spiralThe selection of the structural pattern of the penstock and spiral case in the TGP power-station is not

Keywords： TGP     penstock     spiral case    

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Design on the board of spiral cooling tower

Huang Rui

Strategic Study of CAE 2008, Volume 10, Issue 11,   Pages 43-46

Abstract:

A spiral structure of cooling tower is designed for heat exchange ofgas & liquid.The method includes the locating of the outer spiral line on the tower wall and theinner spiral line on the central axial pipe, as well as the topologic shape in the plane for the curvingboard between the two spiral lines.According to the basic parameters of cooling tower, the critic parameters of spiral curving board can

Keywords： cooling tower     board     spiral curving board     topology    

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A wind tunnel study on control methods for cable dry-galloping

Hung D. VO,Hiroshi KATSUCHI,Hitoshi YAMADA,Mayuko NISHIO

Frontiers of Structural and Civil Engineering 2016, Volume 10, Issue 1,   Pages 72-80 doi: 10.1007/s11709-015-0309-7

Abstract: Furthermore, single spiral wire, double spiral wire and circular ring were found to have high effectiveness

Keywords： dry-galloping     wind-relative angle     single spiral wire     double spiral wire     circular rings    

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The Application of Moving Frame in the Calculation of Spiral Bevel Gear’s Principal Curvature

Wang Yuqing,Liang Jian

Strategic Study of CAE 2001, Volume 3, Issue 12,   Pages 68-70

Abstract:

the calculation of contacted points´ principal curvature is the key to determine contacted area. Traditionally, the method of determining principal curvature is to make use of the theory of mesh and coordinate transform. However, this method is complex. In this paper, based on the feature of curve surface, moving frame and co-differential are employed to give a sententious, effective algorithm of principal curvature. Then, according to the formulation of contacted area, an application example is given. This algorithm can be used for calculation of principal curvature in all kinds of curve surfaces.

Keywords： spiral bevel gear     principal curvature     moving frame    

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The Round-metal-resonator CO2 Laser with Spiral Flow

Li Zaiguang,Gong Wei

Strategic Study of CAE 2001, Volume 3, Issue 1,   Pages 58-61

Abstract: It is shown that the multi-channel blown-in discharge, intercavity spiral flow and adjacent unit rotating

Keywords： CO2 laser     round-metal-resonator     spiral flow     beam quality    

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An investigation into the heat transfer characteristics of spiral wall with internal rib in a supercritical

TANG Renhu, YIN Fei, WANG Haijun, CHEN Tingkuan

Frontiers in Energy 2007, Volume 1, Issue 3,   Pages 300-304 doi: 10.1007/s11708-007-0043-5

Abstract: Because the rotational flow of the internal groove reduced the effect of natural convection, the internal

Keywords： m ·     diameter     critical pressure     sub-critical pressure     maximum    

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The Innovation-design of Pan-spiral Bevel Gear and Its Secondary Development of Applications

Liang Guiming

Strategic Study of CAE 2001, Volume 3, Issue 7,   Pages 70-78

Abstract:

Bevel gears and hypoid gears are more complex transmission equipments. To avoid the change of shaft angles, the zero modification transmission (i.e.x1 + x2 = 0) tooth systems are adopted and had been used about one century .This paper introduces a new tooth system, NON-ZERO modification transmission (x1+ x2≠0), keeping the invariable shaft angle. After secondary development, this innovation may be manufactured by updated machine tool and be applied successfully to engineering vehicle, military production, vertical machine tool, locomotive, speed boat, as well as oil field, coal mine and cement industry. The new-type bevel gears have many advantages, such as multiple capacities, high reliabilities, long lives, small dimension, low noise and high adaptability. They not only may substitute the whole Gleason bevel gear system but also accomplish the function which Gleason can't. Hence the new type bevel gears will open vast vistas for application.

Keywords： spiral bevel gear     innovation design     secondary development    

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The Application of FDTD and Micro Genetic Algorithms to the Planar Spiral Inductors

Wang Hongjian,Li Jing,Liu Heguang,Jiang Jingshan

Strategic Study of CAE 2004, Volume 6, Issue 11,   Pages 38-42

Abstract: In this paper, the FDTD method is applied to explain the crowding effect of the spiral inductor , which

Keywords： FDTD     genetic algorithms(GA)     spiral inductor     quality factor    

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Autoimmunity in acute ischemic stroke and the role of blood—brain barrier: the dark side or the light one?

Nikolay V. Tsygan, Alexandr P. Trashkov, Igor V. Litvinenko, Viktoriya A. Yakovleva, Alexandr V.

Frontiers of Medicine 2019, Volume 13, Issue 4,   Pages 420-426 doi: 10.1007/s11684-019-0688-6

Abstract: This article presents a synopsis of the current data on the mechanisms of blood—brain barrier (BBB) alteration and autoimmune response in acute ischemic stroke. Most researchers confirm the relationship between the severity of immunobiochemical changes and clinical outcome of acute ischemic stroke. Ischemic stroke is accompanied by aseptic inflammation, which alters the brain tissue and exposes the co-stimulatory molecules of the immune system and the neuronal antigens. To date, BBB is not considered the border between the immune system and central nervous system, and the local immune subsystems are found within and behind the BBB. BBB disruption contributes to the leakage of brain autoantigens and induction of secondary autoimmune response to neuronal antigens and long-term inflammation. Glymphatic system function is altered and jeopardized both in hemorrhagic and ischemic stroke types. The receptors of innate immunity (toll-like receptor-2 and toll-like receptor-4) are also involved in acute ischemia—reperfusion injury. Immune response is related to the key processes of blood clotting and fibrinolysis. At the same time, the stroke-induced immune activation may promote reparation phenomena in the brain. Subsequent research on the reduction of the acute ischemic brain injury through the target regulation of the immune response is promising.

Keywords： stroke     blood–brain barrier     autoimmunity     innate immunity     inflammation     cell death    

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Emulsification for castor biomass oil

Dongxiang ZHANG, Yuanping LIN, Anmei LI, V. V. TARASOV

Frontiers of Chemical Science and Engineering 2011, Volume 5, Issue 1,   Pages 96-101 doi: 10.1007/s11705-010-0553-2

Abstract: The effect of the emulsifier formula on the stability of castor oil-water system was studied through compounding three groups of emulsifiers from the aspects of stability factor of absorbance, centrifuge stability, demulsification time in quiescence, appearance of the droplets, and viscosity. The best emulsifier formula for castor biomass oil was the composite formula of sorbitan monooleate and polyoxyethylene sorbitan monostearate. Correlation exists between the stability of emulsion and the viscosity/particle size of the droplets, with better stability in the case of greater viscosity or narrower distribution of particle size in the emulsion of castor oil-water system. Methanol added to the castor oil-water system may decrease the viscosity of the emulsion. Comparing the castor oil-water emulsion with methanol-castor oil-water emulsion, the optimal hydrophilic and lipophilic balance (HLB) value based on castor oil-water system was acquired between 6.6 and 7.5, while the optimal HLB value based on the methanol-castor oil-water system was between 5.5 and 6.0. The optimal HLB value of methanol-castor oil-water system gradually moved to that of castor oil-water emulsion with adding more water.

Keywords： castor oil     biomass oil     emulsification     stability     viscosity     corrosivity    

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Synergistic effect of V and Fe in Ni/Fe/V ternary layered double hydroxides for efficient and durable

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 1,   Pages 102-115 doi: 10.1007/s11705-022-2179-6

Abstract: Herein, via a one-pot hydrothermal method, Ni/Fe/V ternary layered double hydroxides (NiFeV-LDH) derivedBy changing the feeding ratio of Fe and V salts, the prepared ternary hydroxides were optimized.At an Fe:V ratio of 0.5:0.5, NiFeV-LDH exhibits outstanding OER activity superior to that of the binarybimetallic hydroxide layers: (a) Fe plays a crucial role as the active site; (b) electron-withdrawing Vstabilizes the high valence state of Fe, thus accelerating the OER process; (c) V further offers great

Keywords： oxygen evolution reaction     electrocatalysts     ternary layered double hydroxides     long-term stability    

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Association between ICU quality and in-hospital mortality of V-V ECMO-supported patients—the ECMO quality

Frontiers of Medicine doi: 10.1007/s11684-023-1014-x

Abstract: explore the influence of intensive care unit (ICU) quality on in-hospital mortality of veno-venous (V-VThe study involved all V-V ECMO-supported patients in 318 of 1700 tertiary hospitals from 2017 to 2019Among the 2563 V-V ECMO-supported patients in 318 hospitals, a significant correlation was found betweenand the total ICU mortality rate were independent risk factors for higher in-hospital mortality of V-VMeanwhile, the V-V ECMO center volume was a protective factor (cutoff of ≥ 50 cases within the 3-year

Keywords： veno-venous extracorporeal membrane oxygenation     in-hospital mortality     high-volume centers     quality control     intensive care unit capacity parameters    

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A concise review about fracture assessments of brittle solids with V-notches

Hsien-Yang YEH, Bin YANG

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 2,   Pages 478-485 doi: 10.1007/s11709-019-0520-z

Abstract: review of recent studies about the fracture assessments of elastic brittle solid materials containing V-notchesIn this preliminary and brief survey, elastic stress distributions in V-notched solids are discussed

Keywords： fracture     assessment     brittle solids     V-notches     review    

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Title Author Date Type Operation

Processing of high-precision ceramic balls with a spiral V-groove plate

Ming FENG,Yongbo WU,Julong YUAN,Zhao PING

Journal Article

Mathematical model and manufacture programming of loxodromic-type normal circular-arc spiral bevel gear

Zhenyun DUAN, Houjun CHEN, Zhilan JU, Jian LIU

Journal Article

Selection and Verification of the Structural Pattern of the Penstock and Spiral Case of the TGP Power-station

Dai Huichao,Peng Peng

Journal Article

Design on the board of spiral cooling tower

Huang Rui

Journal Article

A wind tunnel study on control methods for cable dry-galloping

Hung D. VO,Hiroshi KATSUCHI,Hitoshi YAMADA,Mayuko NISHIO

Journal Article

The Application of Moving Frame in the Calculation of Spiral Bevel Gear’s Principal Curvature

Wang Yuqing,Liang Jian

Journal Article

The Round-metal-resonator CO2 Laser with Spiral Flow

Li Zaiguang,Gong Wei

Journal Article

An investigation into the heat transfer characteristics of spiral wall with internal rib in a supercritical

TANG Renhu, YIN Fei, WANG Haijun, CHEN Tingkuan

Journal Article

The Innovation-design of Pan-spiral Bevel Gear and Its Secondary Development of Applications

Liang Guiming

Journal Article

The Application of FDTD and Micro Genetic Algorithms to the Planar Spiral Inductors

Wang Hongjian,Li Jing,Liu Heguang,Jiang Jingshan

Journal Article

Autoimmunity in acute ischemic stroke and the role of blood—brain barrier: the dark side or the light one?

Nikolay V. Tsygan, Alexandr P. Trashkov, Igor V. Litvinenko, Viktoriya A. Yakovleva, Alexandr V.

Journal Article

Emulsification for castor biomass oil

Dongxiang ZHANG, Yuanping LIN, Anmei LI, V. V. TARASOV

Journal Article

Synergistic effect of V and Fe in Ni/Fe/V ternary layered double hydroxides for efficient and durable

Journal Article

Association between ICU quality and in-hospital mortality of V-V ECMO-supported patients—the ECMO quality

Journal Article

A concise review about fracture assessments of brittle solids with V-notches

Hsien-Yang YEH, Bin YANG

Journal Article