The effects of global warming, elevated CO2, increased UV-B radiation and N deposition on litter decomposition was reviewed in this paper based on literatures. 就全球环境变化如全球变暖、大气CO2浓度升高、UV-B辐射增强、氮沉降等对凋落物分解影响的研究进展进行了综合述评。
Results The natural anthocyan pigments were relatively stable under the radiation of incandescent lamp, whereas their photic decomposition rates became faster under the radiation of high-pressured mercury lamp. 结果花青素类天然色素在白炽灯下较为稳定,而在高压汞灯照射下,光降解速度明显加快。
In the field of sample preparation microwave radiation has been successfully used for some years and has become an excellent alternative to classical decomposition methods. 微波辐射在样品制备领域已成功应用多年,是消解方法中的最佳选择。
UV-B radiation affects plant phenology, morphological characteristics and secondary metabolism, and lead to changes in species structure, competitive balance, food webs, plant pathogens, matter cycling, fungal colonization and leaf decomposition. UV-B辐射影响植物物候、形态和次生代谢,从而改变生态系统的物种结构、竞争性平衡、食物链、植物病原体、物质循环、真菌移殖与叶片分解。
The title nano-powder catalysts were prepared by precipitation under ultrasonic radiation. The composition, structure, particle size and activity of catalysts for H 2O 2 decomposition were investigated by XRD 、 IR and TEM. 采用超声沉淀法制备了标题纳米粉体催化剂,运用XRD、IR、TEM等技术研究了粉体的组成,相结构、颗粒粒径及催化分解H2O2活性。
The results show that the rate of decomposition increases with the lengthening of radiation time, the rate of decomposition increases with the increasing in temperature under 60 degree centigrade and the rate decreases with the increasing in temperature above 60 degree centigrade. 结果表明:DBS的降解率随辐照时间的延长而增加;溶液温度在低于60℃时,DBS的降解率随温度的升高而增加,高于60℃降解率随温度的升高反而降低;
A compartment and centralization mode for radiation part of split decomposition stoves 裂解炉辐射室的分块集中模型
The radiation decomposition of the sample is mainly the rupture of C C bond, and less is the rupture of C F bond. 材料的辐射降解主要发生在主链上,即CC键断裂,而侧基CF键的断裂相对较少。
In present paper, the vibration and sound radiation from submerged revolutional shell excited by sound source are predicted by the Finite Element plus Boundary Element& Modified Modal Decomposition Method. 本文将有限元加边界元&修正的模态分解法推广到对水下任意形旋转壳体在近场声源激励下振动和声辐射的数值预报问题。
Under enhanced UV-B radiation, the changes in chemical composition of spring wheat and in fungal colonization rate, and the increase in decomposition rates might resulted in a faster nutrient turnover in wheat field ecosystem and a higher nutrient storage in soil. 在增强的UVB辐射下,春小麦植株化学成分的变化,真菌定殖率的改变,分解率的增加,可能会导致麦田生态系统营养周转加快,土壤库中营养贮量增加。
Conclusion Acupuncture, auricular point sticking and TDP radiation combined with diet control and exercise are a better program for slimming, and decreasing appetite, promoting lipid decomposition metabolism are the mechanism of acupuncture in slimming. 结论:针刺、耳穴贴压、TDP照射结合饮食控制及运动,是目前较优化的减肥方案。降低食欲、促进脂肪分解代谢是针刺减肥的机理。
Cu-Mn complex oxides nanometer powder is prepared by solid-phase reaction at room temperature under the radiation of microwave, and the time of thermal decomposition is reduced significantly by the microwave radiation than by traditional solid-phase reaction. 采用室温微波固相合成法制备了纳米级铜锰复合氧化物,微波加热大大缩短了传统低温固相热分解的时间;
Effects of UV-B Radiation on Litter Decomposition and Mechanism UV-B辐射对植物残体分解的影响及其机理