查询词典 dielectric heating

In order to probe the existence of nonthermal microwave effects, four synthetic transformations (Diels-Alder cycloaddition, alkylation of triphenylphosphine and 1,2,4-triazole, direct amide bond formation) were reevaluated under both microwave dielectric heating and conventional thermal heating.

为了探测非能微波效应的存在，四种合成转化反应（Diels-Alder环加成、三苯基膦和1，2，4-三唑的烷基化、酰胺键的直接合成）在微波介电加热和传统热加热两种情况下的重新评价。

Dielectric heating is a convenient method of heating the preforms.

电阻加热是加热的方法中方便被预先形成。

Ice-dielectric heating occurs most strongly at the voltage antinodes in the standing wave pattern, whereas skin-effect heating occurs most strongly at the current antinodes.

冰介质加热时发生最强烈的电压波腹的驻波模式，而皮肤的作用最强烈加热发生在当前波腹。

One well-understood effect of microwave radiation is dielectric heating, in which any dielectric material is heated by rotations of polar molecules induced by the electromagnetic field.

一个众所周知的微波辐射的作用是非传导加热，所有电介质材料被电磁场导致的两极分子循环加热。

The acceleration of chemical reaction with the radiation of microwave is caused by not only the dielectric heating,but also the athermal action.

微波加快化学反应速度除了微波对反应物的加热以外还有非致热的作用。

Many studies in the past decade on organic synthesis by microwave irradiations showed that this was because of dielectric heating effects of microwaves, while some other studies suggested that non-the...

近年来在有机合成领域中，已有许多应用微波电介质加热效果的例子报道。

Studying dielectric properties of foods,not only can people understand radio frequency or microwave properties of foods,develop dielectric heating equipment which save most energy,but also can make dielectric properties be applied in evaluating food qualities.

对食品介电特性的研究，不仅能使人们了解食品的射频或微波特性，研发出最具节能效果的介电加热设备，而且介电特性可用于食品品质的识别。

Additionally, morphological structure and properties of the TiO_2 prepared by using the conventional heating and microwave dielectric heating were also compared detailedly. Acetaldehyde was chosen as a model reactant to valuate the performance of the samples.

通过自行设计的微波-光催化反应器，在功率100~170 mW、频率36 GHz 的微波和紫外光同时存在下研究了TiO_2对乙醛的光催化氧化性能，并与单纯紫外光存在下的光催化过程进行了比较。

So far, we human beings for the heating of the concept has long been restricted to convection, conduction, radiation three kinds of surface heating in it, in recent years the use of molecular friction between the object itself is heated and heat of the principle of the developed in the dielectric heating (including the high-frequency and microwave heating) has been widely used in industrial heating and drying purposes above, this heating method unlike the aforementioned three kinds of methods, the heat do not penetrate the surface, but will wear the electromagnetic energy directly to transparent objects into heat inside a method, also known as the fourth heating methods

到目前为止，我们人类对于加热之观念一直都被局限于&对流&、&传导&、&幅射&三种表面加热方法而已，近年来利用&被加热物体本身分子磨擦生热之原理&所发展出来之诱电加热被广泛应用于工业加热干燥用途上面，此种加热方法不像前述之三种方法，热量不需要穿透物体表面，而是将电磁波能量直接穿透物体内部转换成热量的一种方法，也被称为第四种加热方式

The following main results are obtained: The TiO_2 photocatalyst with small crystallite size, high surface area, narrow and uniform pore size distribution, and microporous frameworks could be prepared out by applying MW radiation in the preparation process. The microwave-induced fluorescence technique verified for the first time that microwave enhanced the formation rate of hydroxyl radical, leading to the increase in the photocatalytic efficiency. Compared with the conventional catalyst, TiO_2 prepared by MW dielectric heating owns a higher UV absorption ability, and its optical absorption edge and photovoltaic response are shifted toward the short wavelength region, resulting in increase of photooxidation efficiency. The photocatalytic conversion and the mineralization ratio of acetaldehyde are increased respectively by 30% and 40% over the TiO2 prepared by MW radiation when compared to the TiO2 prepared by the conventional heating. For the MW-assisted photocatalytic reaction over the MW-prepared TiO2, production of hydroxyl radicals is enhanced by 22.5%, and the photocatalytic conversion is accordingly increased by 20%. Similarlly, applying MW also increased the photocatalytic conversion and the mineralization ratio of acetaldehyde over TiO2/Al2O3 sample.

论文得到如下主要结果和结论：(1)微波介电加热TiO_2 溶胶可得到晶粒度小、光催化活性高、比表面积大和孔径分布窄而均一，且微孔发达的TiO_2光催化剂；在溶胶干燥处理过程中微波可使催化剂表面缺陷增加，进而导致光催化反应过程有更多的活性羟基自由基产生；(2)微波制备能显著增强TiO_2 样品的紫外光吸收率，并使其光吸收和光伏响应阈值发生蓝移，从而提高TiO_2的氧化还原能力；(3)与常规加热法所制TiO_2比较，微波法制备的TiO_2对乙醛的光催化降解转化率提高30%，CO_2生成率提高40%以上；(4)与未加微波辐射时相比，发现在光催化反应过程中施加微波，TiO_2 的羟基自由基生成速率提高了22.5%，相应CH_3CHO 光催化降解转化率提高了20%；对Al_2O_3/TiO_2催化剂，CH_3CHO 光催化降解转化率甚至提高了33%，同时CO_2 的生成率也都大幅度提高；(5)微波辐射可改变光催化降解乙醛的产物分布，推断施加微波时乙醛光催化降解按照羟基自由基引发的链式反应机理进行，微波&非热效应&起主要作用。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。