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Funalia gallica, Lenzites tricolor, Polyporellus brumalis, Pseudotrametes gibbosa, Pycnoporus sanguineus, tested their degrading ability to david poplar wood lignin, measured the lignin content change of david poplar wood after a period of time degraded by 6 wood rot fungi, which is the first study on the biodegradation mechanism of lignin by wood white rot fungi.

本项研究选择了火木层孔菌及另外5种木材分解能力较强的阔叶树上的白腐菌:粗毛盖菌、三色革裥菌、冬拟多孔菌、偏肿拟栓菌和血红密孔菌,研究了它们对山杨木材木质素的分解能力,测定了经6种白腐菌分解一定时期的山杨木材木质素的含量,作为木材白腐菌对山杨木材木质素生物降解机制的初步研究,旨在为山杨木材生物制浆造纸提供应用基础理论研究,同时也可为木质素合理的生物转化为有用的化学品、生物漂白、酶处理防止机械浆的返黄、废水治理、纤维素酶解糖化的微生物前处理等提供相关的借鉴研究,以期在生产实践中减轻环境污染并充分利用木质素资源。

This problem is also important and valuable in Nonlinear Optics. It will be very helpful to understand how the aberrations affect the course of three- wave mixing, such as the change of conversion efficiency, the distribution of intensity and phase.Small signal solution of aberrated second harmonic generation is deduced from three-dimension three wave coupling functions. The numerical work gives out lot of results of different aberrations. The effects of the fundamental waves aberrations, which will change the conversion efficiency, distribution of intensity and phase in the frequency conversion, is analyzed. It shows that when walk-off and diffraction effects could be ignored approximately estimation of the phase distribution of second-harmonic wave could be done. The far field divergent angle and second moment radius of harmonic wave will vary with the aberration of fundamental wave, but the far field divergent angle will be obviously smaller than that of fundamental wave. The phase distribution of both fundamental and harmonic wave is measured using Hartmann-Shack wave front sensor in the experiment with 1064nm and 790nm lasers, respectively. Results are given.

首次从三维三波相互作用方程组推导得到了位相畸变光束倍频的小信号解;通过建立国防科学技术人学研究生院学位论文三维数值模型,编写相应仿真程序,首次得到了位相畸变光束倍频过程的大量计算结果,深入细致地研究了位相畸变光束经非线性光学频率变换后谐波的转换效率、光强分布、位相分布以及影响它们的各种因素;得出谐波的远场发散角和光斑二阶矩的变化规律会因为基波像差的不同而不同,但谐波的远场发散角明显地比相应基波的小的结论;得到了在走离效应和衍射效应等影响许多因素可以忽略的情况下,位相畸变传递到二次谐波的估算式;举例分析了KDP三倍频方案中,基波位相畸变对二次谐波和三次谐波的影响;实验工作中,用哈特曼一夏克传感器分别对IO64nm倍频过程和790飞秒超短脉冲倍频过程中的基波和谐波的位相分布进行了测量,给出了相应结果。

Small signal solution of aberrated second harmonic generation is deduced from three-dimension three wave coupling functions. The numerical work gives out lot of results of different aberrations. The effects of the fundamental wave's aberrations, which will change the conversion efficiency, distribution of intensity and phase in the frequency conversion, is analyzed. It shows that when walk-off and diffraction effects could be ignored approximately estimation of the phase distribution of second-harmonic wave could be done. The far field divergent angle and second moment radius of harmonic wave will vary with the aberration of fundamental wave, but the far field divergent angle will be obviously smaller than that of fundamental wave. The phase distribution of both fundamental and harmonic wave is measured using Hartmann-Shack wave front sensor in the experiment with 1064nm and 790nm lasers, respectively. Results are given.

首次从三维三波相互作用方程组推导得到了位相畸变光束倍频的小信号解;通过建立三维数值模型,编写相应仿真程序,首次得到了位相畸变光束倍频过程的大量计算结果,深入细致地研究了位相畸变光束经非线性光学频率变换后谐波的转换效率、光强分布、位相分布以及影响它们的各种因素;得出谐波的远场发散角和光斑二阶矩的变化规律会因为基波像差的不同而不同,但谐波的远场发散角明显地比相应基波的小的结论;得到了在走离效应和衍射效应等影响许多因素可以忽略的情况下,位相畸变传递到二次谐波的估算式;举例分析了KDP三倍频方案中,基波位相畸变对二次谐波和三次谐波的影响;实验工作中,用哈特曼-夏克传感器分别对1064nm倍频过程和790飞秒超短脉冲倍频过程中的基波和谐波的位相分布进行了测量,给出了相应结果。

The infectivity of TMV recovered by dialysis from incubation with anthraquinone glycosides in vitro has been reduced in contrast to infectivity of TMV control, it seems that anthraquinone glycosides have direct viricidal effect on TMV. The anthraquinone glycosides may interfere recognization of TMV to host receptor when applied before TMV inoculation. The anthraquinone glycosides can inhibit multiplication of TMV in infected leaf discs but did not inhibit infectivity of TMV-RNA in vitro. The control of tobacco mosaic virus disease of N.

总蒽醌甙对TMV混合,对粒体形态无破坏作用,但经透析,其抑制作用仍较高,表明总蒽醌甙与TMV结合能力强不易解离或对粒体具有直接毒害作用;总蒽醌甙预先接种可能影响病毒对侵染位点的识别,对叶圆片中的病毒具有抑制复制的作用,但在体外混合不影响TMV-RNA的侵染活性,可能与总蒽醌甙干扰病毒的衣壳装配过程或影响复制酶的活性有关。

The optimum conditions of extracting cystine were confirmed, as follows: the waste wool pretreatment conditions are pH10, alkali solution temperature 50 ℃ and dry temperature 80 ℃; the waste wool hydrolysis conditions are hydrochloric acid concentration 32%, acid to hairs ratio 1.8:1, hydrolysis temperature 120 ℃, and hydrolys...

研究了预处理、酸解条件、脱色对羊毛胱氨酸提取量的影响,得出了最佳提取胱氨酸的条件,即在pH值为10、碱液温度50℃、烘干温度80℃预处理后的羊毛,在质量分数32%的盐酸、酸毛比1.8:1、水解温度120℃的条件下水解8h。经检测,按所优化工艺提取的胱氨酸符合标准。

They recommend childproof packaging with striking and clear warning labels; increased public education and media publicity on primary prevention of poisoning; and new legislation mandating safety caps on poison containers. As there is not a specific antidote for amitraz poisoning, management should be supportive and symptomatic.

作者特别提到,amitraz可经由口腔食入或皮肤接触而中毒,但也有经呼吸道吸入amitraz的可能,因此他们建议应设计小孩无法打开的包装,并在包装外标示明显且清楚的警告卷标、加强对大众在这方面的教育及媒体对初期预防的宣导、立法管理盛装毒药的容器安全加盖等,因为目前为止尚无amitraz的解毒剂,因此必须根据中毒者的症状给予支持性治疗。

They recommend childproof packaging with striking and clear warning labels; increased public education and media publicity on primary prevention of poisoning; and new legislation mandating safety caps on poison containers. As there is not a specific antidote for amitraz poisoning, management should be supportive and symptomatic.

作者特别提到,amitraz可经由口腔食入或皮肤接触而中毒,但也有经呼吸道吸入amitraz的可能,因此他们建议应设计小孩无法打开的包装,并在包装外标示明显且清楚的警告标签、加强对大众在这方面的教育及媒体对初期预防的宣导、立法管理盛装毒药的容器安全加盖等,因为目前为止尚无amitraz的解毒剂,因此必须根据中毒者的症状给予支持性治疗。

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Lugalbanda was a god and shepherd king of Uruk where he was worshipped for over a thousand years.

Lugalbanda 是神和被崇拜了一千年多 Uruk古埃及喜克索王朝国王。

I am coming just now,' and went on perfuming himself with Hunut, then he came and sat.

我来只是现在,'歼灭战perfuming自己与胡努特,那麼,他来到和SAT 。

The shamrock is the symbol of Ireland and of St.

三叶草是爱尔兰和圣特里克节的标志同时它的寓意是带来幸运。3片心形叶子围绕着一根断茎,深绿色。