<para xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> In this paper, we address the subject of converting cornstalk into simple sugars with high-pressure nonequilibrium plasma. The process complies green chemistry principle and, thus, does not involve use any chemical agents required by conventional methods. addition, avoids oxidation or combustion cornstalk. High-pressure plasma was generated using a dielectric barrier discharge device, which...

In this paper, the visual features of microwave ignition process were investigated. To realize under high pressure, a 2.45 GHz cylinder resonator was designed. The electric field in and quality factor theoretically calculated. A needle-like coupling antenna introduced to further enhance maximum ensure reliability discharge. We ignited stoichiometric methane-air mixture at 10 bars by 2 ms, 1 kW, pulse. photography images pressure history obtained analyzed. These results compared with spark...

The gas temperature is a key parameter that affects the process of microwave plasma chemistry in industrial applications. Based on molecular emission spectrometry A2Σ+→X2Πr electronic system OH radicals, atmospheric air core at different absorbed power levels, flow rates, humidities, and volume fractions CO2 was analyzed. In experiment, power, rate, humidity, ratio varied from 560 to 1750 W, 10 24 l min−1, 30% 95%, 0% 40%, respectively. Moreover, axial distribution torch measured....

In this article, the core of an atmospheric-microwave-induced air plasma torch is resolved and measured by adjusting exposure time a high-speed camera. Gas temperature measurements microwave are achieved molecular emission spectrometry A <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> Σ xmlns:xlink="http://www.w3.org/1999/xlink">+</sup> → X Π <sub xmlns:xlink="http://www.w3.org/1999/xlink">r</sub> electronic system OH radicals. How...

The gas temperature, electron and density are critical parameters that affect microwave plasma chemistry processes in industrial applications. Using optical emission spectroscopy (OES), the temperature of a 915-MHz atmospheric pressure air torch (MPT) were investigated at various absorbed power levels radial positions. In addition, variation temperatures argon filaments was analyzed as function power. experimental results showed that: 1) had little effect on or density; 2) skin present MPT,...

Microwave plasma offers a promising method to achieve faster combustion in internal engine. In this paper, microwave multipoint ignition was confirmed via the high-speed imaging technique. The experiment conducted with resonant system and optical system. A 2-ms, 3000-W, 2.45-GHz pulsed power used as energy source produce initial flame kernel chamber. High-speed record characteristics camera. Ignition experiments were at high pressure of 2 bars stoichiometric methane-air mixtures. It can be...

The Z-FFR (Z-Pinch Driven Fusion Fission Hybrid Reactor) is an important innovative design concept. high uncertainty of the operating process pulsed power unit and physical fusion absence some theoretical experimental conditions make it difficult to establish a high-precision mechanistic model, obtain accurate mathematical model complex, dynamic system. A data-driven modelling approach urgently needed replace models obtained with aid extensive simulations experiments. includes creation...

In this paper, a method is introduced to get global observation of microwave plasma ignition process at high pressure. A resonator was designed with an indium tin oxide coated glass bottom. Microwave implemented in methane and air mixture 10 bars by 2 ms-3 kW-2.45 GHz pulse, the speed images were obtained. The visually proved that could lead multi-point ignition. system may also be applied obtain Schlieren images, which commonly used observe development flame kernel process.

Microwave plasma offers a potential method to achieve rapid combustion in high-speed combustor. In this paper, microwave resonant multi-point ignition and its control have been studied via schlieren imaging. The experiment was conducted with the system optical system. pulse 2.45 GHz 2 ms width 3 kW peak power employed as an energy source produce initial flame kernels chamber. A reflective designed illustrate development process camera. bottom of chamber made quartz glass coated indium tin...

A new species of Isotrema was recently discovered from Guizhou, China and is here named as I. brevilimbum. It most similar to ovatifolium wardianum, but differs in the morphology leaves flowers. detailed description for species, along with line drawings, photographs, well morphological comparisons are provided. In addition, distribution wardianum confirmed.

By using the finite difference time-domain (FDTD) method, distribution of modulus electric field intensity is obtained in near an optical fiber head.We found that different dimensions cylindrical core a hollow had influence on intensity. It concluded size must be increased to make beam cover larger area. At same time, after discussing two situations either rather large or small, we dark spot was almost as region (10 nanometer level). However, background light brighter, and so designed metal...

With the widespread application of numerical simulation in aeroengine, it is crucial to automatically and efficiently generate structured grids for rotating components. Therefore, a comprehensive grid automatic generation software called TurboMaster was established. Firstly, we present design details, including architecture methods. Secondly, provide detailed demonstration Geometry Module Grid Module, which encompass geometric model generation, topological construction, 2D multi-block...

An infinite-volume of atmospheric argon microwave plasma is produced in the source based on inductive coupling window-rectangular resonator under input power at 2.45 GHz. The excitation temperature studied by using Boltzmann plot Ar I lines two different wavelength ranges while electron researched line-to-continuum intensity ratio lines. density compared Stark broadenings 522.13nm and 549.59nm Hβ line 486.13 nm.

We present a novel microwave plasma source based on an inductive coupling window-rectangular resonator. A definite volume of atmospheric argon is excited in the under input several kilowatts power operating at 2.45 GHz. The excitation temperature and electron are separately researched by using Boltzmann plot line-to continuum intensity ratio Ar I spectral lines. Its density inferred from Stark broadening Hβ line 486.13 nm.

In this study, gas temperature measurements of argon, nitrogen, and air microwave plasma are achieved by the molecular emission spectrometry $A^{2} \sum ^{+} \rightarrow X^{2} \prod _{r}$ electronic system OH radical <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">[1, 2]</sup> , temperatures at different power flow rate explored, axial distributions nitrogen plume measured. The experimental results show that core is higher than 2000 K working...

As a type of plasma can be an efficient source highly active species, atmospheric microwave torch (MPT) has achieved good results in many fields. <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">1, 2</sup> Although the gas temperature MPT been studied by previous research, they don't realize that may have two parts what we called "Plasma Core" and "Outer Shell" because clear boundary it captured visible light....

Objective To investigate the problems in intraoeular lens(IOL)diopter distribution order to provide an optimizing IOL diopter proportion cataract surgery for prevention of blindness.Methods A total 158 cases with from The Center Hospital Of Jiangjing District In Chongqing City were studied.The values measured before operation and that practically transplanted recorded.The difference between was compared.Results lowest value was-2.5D,the largest one 25.0D.The frequency different...

Microwave plasma is a potential method to improve combustion effect in internal Engine <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">1</sup> . In this study, the characteristics of exhaust emissions for methane-air premixed with microwave ignition and spark plug were investigated using gas chromatography, spectrophotometry, pressure analysis methods. For fundamental experiment, constant volume chamber was employed as cylinder model mixtures...

Application of microwave plasma offers a potential method to produce faster combustion in internal engine <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">1</sup> . In this paper, multi-point ignition and spatial had been confirmed via high-speed Schlieren imaging technique. The experiment was implemented with the resonant system optical system. 2ms-3000W-2.45GHz pulse employed as energy source initial flame kernel chamber. reflected style used...