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The light-conversion and helminthic polyethylene greenhouse film was prepared using fluorescence material as the light-conversion reagent; fluenoxuron and acetamiprid as the helminthic reagent; and talcum powder as the heat-preservation reagent.

以荧材料为转剂、氟虫隆与乙虫脒为驱虫剂、滑石粉为保温剂,制成转驱虫聚乙烯农用薄膜,考察了转剂对荧发射谱、驱虫剂对驱虫率、滑石粉对红外透过率的影响,并进行了农田应用研究。

Notably, compounds 12–14 can be described as a 3D open–framework with nano–channels, compound 15 can be described as a 3D open–framework with double helical channels, while compound 16 can be described as a 3D heterochiral coordination polymer with double helical channels, which can be obtained by spontaneous resolution from the racemic phosphonic acid.X–ray powder diffraction analysis shows that compound 16 is a pure phase. Surface photovoltage spectroscopy of compound 16 indicates that it possesses positive SPV response in the range of 300–600 nm and shows p–type semiconductor characteristic.

值得注意的是,化合物12-14为具有一维纳米孔道结构的三维开放骨架结构,化合物15是具有双螺旋孔道的三维开放骨架结构,而化合物16是外消旋的有机膦酸配体通过自发拆分而形成的具有双螺旋孔道的多手性三维开放骨架结构。X-射线粉末衍射分析表明化合物16为纯相;化合物16的表面电压谱分析中,在300-600nm范围内有3个正的(来源:ABC论文12网www.abclunwen.com)伏响应带,表明它具有p型半导体的特征;化合物16的诱导表面电压谱进一步确定它的p型半导体的特征;磁性研究表明,化合物16中两Mn原子之间存在弱的反铁磁相互作用。

Study K2-xLa2Ti3-xVxO10 serves as smooth activator to be more than 290 Nm ray radiation to fall in wavelengh, splitting decomposition aquatic product gives birth to hydric smooth catalysis active, discuss V5+ to adulterate the influence of active of smooth catalysis of K2La2Ti3O10 of mine of calcic to layer shape titanium.

探究K2-xLa2Ti3-xVxO10作为催化剂在波长大于290 nm辐射下,裂解水产生氢气的催化活性,并讨论V5+掺杂对层状钙钛矿K2La2Ti3O10催化活性的影响。

This suggested that various hypermetropic refractive errors in infants may become "a risk" for the development of esotropia and should be corrected early with appropriate lenses, together with close observation of visual acuity and alteration eye position...

本文从历年来门诊检查的无斜视远视患儿和经专科门诊诊断为内斜视的患者中,分析了远视性屈不正、两眼屈参差及散等数据,试图找出发生斜视&危险&的远视、屈参差及散的度数,以此

In comparison to the process simply using a Hall ion source for the IBAD, the coating has a more compact and uniform structure and a better property in polishing. After surface modification, the surface roughness of the substrate is reduced to 0.635 nm which is the same as that of the S-SiC substrate, also the surface reflectance is obviously enhanced to that of the fine polished zerodur glass.

测试结果表明:与单纯霍尔离子源辅助方法相比,该工艺方法制备的Si改性涂层生长得更加致密、均匀,抛特性良好;改性抛后表面粗糙度降低到0.635 nm,达到了S-SiC基底的水平;改性后RB-SiC基底的反射率明显提高,达到了抛良好的微晶玻璃的水平。

The canopy structure and leaf morphological characters of 4 sugarcane genotypes at different leaf layers on seedling were studied by using CI-100 plant canopy instrument and CI-203 area meter instrument. The results showed the leaf morphological parameters, canopy structure and radiation transmission at different leaf layers were notably different among different genotypes. The variation of Ila, Amfi, Dl at different leaf layers were mainly caused by the leaf width at relevant position. The variation of K at different leaf layers was related to Amfi and Dl. The variation of Td(transm. coef. for diffuse penetration)had significant correlations with Ila, Amfi and Dl. The variation of Tr(transm. coef. for radiation penetration)had significant correlations with Dl, leaf width and the ratio of leaf length to width. The variation of Par had significant correlations with Ila, leaf area, leaf width and the ratio of leaf length to width.

摘要利用CI-100数字植物冠层分析仪和CI-203叶面积分析仪测定了4个甘蔗品种不同叶位层的冠层参数和相应叶位叶片的形态特征,结果表明:不同基因型不同叶位层间叶片形态、冠层空间结构和冠层辐射特征存在显著差异,不同叶位层叶面积指数、叶簇倾角和叶分布的变化主要由冠层内不同叶位叶片叶宽的变化引起,而不同叶位层消系数的变化主要与叶簇倾角和叶分布有关;散射透过系数的变化主要与叶面积指数、叶簇倾角和叶分布有关,直射透过系数的变化主要与叶分布、叶宽、长宽比有关,合有效辐射的变化与叶面积指数、叶面积、叶宽、长宽比有关。

The progect has got the imbursement of progect named "burst modereceiver/ transmitter in broadband access network"(NO:2002AA101A04).The accomplishment of the 155Mb/s burst mode receiver makes essential conditions for the accessing of optical fiber to the common families and estabiishs a theory and technical foundation of the developing burst mode Receiver/Transmitter of the speed over 155Mbit/s.

本课题的研究得到项目&宽带接入网突发式发射和接收模块&(项目编号:2002AA101A04)的资助。155Mb/s突发式接收模块的研制成功为纤进入普通家庭创造了基本的条件,也为以后开发155Mb/s以上速率的突发式收发模块奠定了坚实的理论和技术基础。

Since God is light, And never but in unapproached light Dwelt from Eternitie, dwelt then in thee, [ 5 ] Bright effluence of bright essence increate.

因为上帝就是,从永劫开始就住在无法靠近的里,因为他住在你里面,那么你就是那辉煌素质所固有的辉煌的流

Using ultraviolet lamp as light source, the photocatalytic activity of photo-assisted mesoporous TiO_2 katalyst was studied by photodegradation of Rhodamine B.

以紫外灯为源,通过对水溶性染料罗丹明B的降解反应,考察了助中孔TiO催化剂的催化活性。

Methods Keratometric reading with Topcon KR-8100 automatic keratometry and comeal topography with the TMS-4 on 53 ametropia' children, 106 eyes were compared. Difference in measurements of steep meridian power magnitude Ks, flat meridian power magnitude Kf, astigmatism magnitude Ks-Kf and location as well between the two methods were assessed using paired t test.Bland-Altmann method was used to evaluate the agreement of the two methods.

采用KR-8100自动角膜曲率计及TMS-4角膜地形图仪对53例(106只眼)屈不正儿童进行测量,应用配对t检验对两种方法测量的陡峭子午线角膜屈力、平坦子午线角膜屈力、角膜散Ks-Kf大小及轴向进行比较,并应用Bland-Altmann分析对两种测量方法进行一致性评价。

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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。

The new PS20 solar power tower collected sunlight through mirrors known as "heliostats" to produce steam that is converted into electricity by a turbine in Sanlucar la Mayor, Spain, Wednesday.

聚光:照片上是建在西班牙桑路卡拉马尤城的一座新型PS20塔式太阳能电站。被称为&日光反射装置&的镜子将太阳光反射到主塔,然后用聚集的热量产生蒸汽进而通过涡轮机转化为电力