Combined-Mechanism Glaucoma

In the anti-wrinkle finishing of cotton fabrics, the decreased dyeability of the finished fabrics has always been a difficult problem. A new anti-wrinkle finishing mode was developed to solve this problem by changing the finishing sequence of fabric dyeing and anti-wrinkle. In this research, the partial oxidization of raffinose with sodium periodate generated multiple aldehydes, which acted as multifunctional cross-linkers and endowed cotton fabrics with anti-wrinkle and hydrophilic properties. The structural characteristics of oxyRa were analyzed by FTIR and 13C-NMR. Through response surface methodology (RSM), the finishing model of oxyRa was established from the influencing factors of catalyst concentration, pH, curing temperature and time, and the optimized finishing process: the catalyst concentration was 20.12 g/L, pH was 4.32, curing temperature was 150 °C and curing time was 120 s. Under this condition, the predicted wrinkle recovery angle (WRA) of the finished fabric was up to 249.76°, Tensile strength (TS) was 75.62%, Whiteness index (WI) was 70.69. Importantly, comparing the anti-wrinkle and dyeing performance of the fabric with anti-wrinkle and then dyeing and anti-wrinkle after dyeing, the oxyRa-treated fabrics showed better dyeing properties compared with previously reported dimethyldihydroxyethylene urea (DMDHEU), glutaraldehyde (GA), and 1,2,3,4-butanetetracarboxylic acid (BTCA). Analysis of the combined mechanism of different finishing agents and cellulose, demonstrated the reason why oxyRa can be used to change the order of dyeing and anti-wrinkle finishing.

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A Mathematical Principle and Application on Design of Planar Six-Bar Mechanism with unto Three-Ordered Intermission at Limit Position(s)

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.37-38.9 ◽

2010 ◽

Vol 37-38 ◽

pp. 9-13

Author(s):

Hong Xin Wang ◽

Ning Dai

Keyword(s):

Design Method ◽

Optimization Method ◽

Basic Function ◽

Mathematical Principle ◽

Transmission Characteristics ◽

Basic Functions ◽

Combined Mechanism ◽

Limit Position ◽

Derivatives Of ◽

Better Than

A non-iterative design method about high order intermittent mechanisms is presented. The mathematical principle is that a compound function produced by two basic functions, and then one to three order derivatives of the compound function are all zeroes when one order derivative of each basic function is zero at the same moment. The design method is that a combined mechanism is constructed by six bars; the displacement functions of the front four-bar and back four-bar mechanisms are separately built, let one order derivatives of two displacement functions separately be zero at the same moment, and then get geometrical relationships and solution on the intermittent mechanism. A design example shows that this method is simpler and transmission characteristics are better than optimization method.

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A Multicomponent Blend as a Diesel Fuel Surrogate for Compression Ignition Engine Applications

Journal of Engineering for Gas Turbines and Power ◽

10.1115/1.4030416 ◽

2015 ◽

Vol 137 (11) ◽

Cited By ~ 51

Author(s):

Yuanjiang Pei ◽

Marco Mehl ◽

Wei Liu ◽

Tianfeng Lu ◽

William J. Pitz ◽

...

Keyword(s):

Diesel Engine ◽

Diesel Fuel ◽

Flow Reactor ◽

Expert Knowledge ◽

Combustion Model ◽

Compression Ignition ◽

Compression Ignition Engine ◽

Combined Mechanism ◽

Fuel Surrogate ◽

Skeletal Mechanism

A mixture of n-dodecane and m-xylene is investigated as a diesel fuel surrogate for compression ignition (CI) engine applications. Compared to neat n-dodecane, this binary mixture is more representative of diesel fuel because it contains an alkyl-benzene which represents an important chemical class present in diesel fuels. A detailed multicomponent mechanism for n-dodecane and m-xylene was developed by combining a previously developed n-dodecane mechanism with a recently developed mechanism for xylenes. The xylene mechanism is shown to reproduce experimental ignition data from a rapid compression machine (RCM) and shock tube (ST), speciation data from the jet stirred reactor and flame speed data. This combined mechanism was validated by comparing predictions from the model with experimental data for ignition in STs and for reactivity in a flow reactor. The combined mechanism, consisting of 2885 species and 11,754 reactions, was reduced to a skeletal mechanism consisting 163 species and 887 reactions for 3D diesel engine simulations. The mechanism reduction was performed using directed relation graph (DRG) with expert knowledge (DRG-X) and DRG-aided sensitivity analysis (DRGASA) at a fixed fuel composition of 77% of n-dodecane and 23% m-xylene by volume. The sample space for the reduction covered pressure of 1–80 bar, equivalence ratio of 0.5–2.0, and initial temperature of 700–1600 K for ignition. The skeletal mechanism was compared with the detailed mechanism for ignition and flow reactor predictions. Finally, the skeletal mechanism was validated against a spray flame dataset under diesel engine conditions documented on the engine combustion network (ECN) website. These multidimensional simulations were performed using a representative interactive flame (RIF) turbulent combustion model. Encouraging results were obtained compared to the experiments with regard to the predictions of ignition delay and lift-off length at different ambient temperatures.

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An Attention-Controlled Hand Exoskeleton for the Rehabilitation of Finger Extension and Flexion Using a Rigid-Soft Combined Mechanism

Frontiers in Neurorobotics ◽

10.3389/fnbot.2019.00034 ◽

2019 ◽

Vol 13 ◽

Cited By ~ 5

Author(s):

Min Li ◽

Bo He ◽

Ziting Liang ◽

Chen-Guang Zhao ◽

Jiazhou Chen ◽

...

Keyword(s):

Finger Extension ◽

Hand Exoskeleton ◽

Combined Mechanism

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Kinematic Analysis on Series Combined Mechanism of Elliptic Gear and Outer Geneva

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.312.42 ◽

2013 ◽

Vol 312 ◽

pp. 42-46

Author(s):

Shao Hua Shen ◽

Ji Fei Cai

Keyword(s):

Kinematic Analysis ◽

Angular Acceleration ◽

Factors Affecting ◽

Combined Mechanism ◽

The Impact

With elliptic gear as the leading mechanism of Geneva mechanism, the angular acceleration was reduced to decrease the impact of the entering and quitting of geneva. Various factors affecting the angular acceleration were analyzed, and choices of appropriate parameters for the decrease of angular acceleration was discussed.

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