浅析危险废物的环境评估标准以及处理技术

与普通废物相比,危险废物不但具有爆炸性、侵蚀性、传染性,同时还具有一定的毒害性,并且这种危害不是短暂的而是具有一定的潜伏性和长久性,它带给环境的破坏是不容忽视和估量的。为了强化对危险废物的处理,对它们采用无污染、无害化的处理技术是当务之急。目前世界各国进行了多项研究,并且取得了良好的成绩,我国也拥有了相对先进和成熟的处理技术。本文主要分析了危险废物的定义、危害,进而对危险废物的环境评估标准和处理技术进行深入的探究。     

现代博物馆危机处理的流程与应急机制设计

博物馆危机处理是博物馆发生危机时,博物馆管理者为阻止危机的扩散和继续,减少博物馆损失,维护博物馆形象而采取的控制、处理危机的有效措施。为保障危机处理工作的顺利进行,博物馆必须遵循一定的危机处理流程,设计合理的应急机制。危机处理流程和各项应急机制共同构成了博物馆危机处理的内涵。此外,博物馆危机处理还需要放在危机管理的系统中,加强与其它环节的配合方能收到事半功倍之效。     

浅论叶面肥在黄瓜上的应用肥效

目的:探讨叶面肥在黄瓜上的施用效果。方法:在7月-10月间采用平畦栽培方式,设置常规施肥(处理1),常规施肥+等量清水(处理2),常规施肥+腐植酸水溶肥料(处理3),常规施肥+大量元素水溶肥料(处理4)4个处理,,通过对比4个处理,从而知道叶面肥在黄瓜上的施用效果。结果:对照4个处理,得知处理3和处理4对黄瓜的植株影响、单果重和经济效益的影响明显高于处理1和处理2的。结论:喷施叶面肥对黄瓜具有显著地增产效果,提高了黄瓜的经济效益。     

浅谈信息技术课堂教学的探索

信息技术应用于课堂教学在提高教学质量的同时,必须处理好几个关系,如如何处理信息技术和教学理念的关系、教与学的主体和主导的关系、信息技术与学科的整合问题、信息技术与传统手段的结合等。这些问题处理不好,就会给课堂教学带来一些负面的影响,本文就这些方而的注意事项作了一些探索。     

《水稻的类型》一课的点拨套路

教师在处理不同的教学内容时有不同的思路,本文以《水稻的类型》一课为例从点兴趣、点结构、点技巧三角度探讨了课堂处理技巧,具有较强的实用性。     

科技手段在公共危机处理的作用分析

渗透入现代社会各个层面的科技手段,同样也渗透入公共危机处理之中。本文对科技手段在公共危机处理中的作用做了细致分析,着重提出科技手段对公共危机具有预防作用、缓解作用、根除作用。此外,本文还对公共危机处理中如何有效利用科技手段提出了几点建议。     

古代木质品的防腐加固处理

报道了采用乙醇-乙醚脱水、甲基丙烯酸甲酯渗透加固和霉敌防腐剂（自制）防腐对陕西临潼贵妃池地下管道碎木进行了处理。处理后,木质品保持了出土时的原貌,其机械强度、耐腐蚀性能明显增加。     

近代中国政府处理华侨国籍问题的法制化进程

以近代中国政府先后颁布的国籍法为纵向坐标,通过对国籍法颁布前后中国政府处理华侨国籍问题的不同状况进行对照,分析了近代中国政府在处理这个问题上经历的逐步法制化的过程。得出结论,国籍法颁布前,中国政府处理华侨国籍问题时无法可依、随机处理,在此类的外交交涉中处于被动地位;国籍法颁布后,中国政府依据成文的国籍法和相关的国际惯例来处理华侨的国籍问题,在此类交涉中占据了比较有利和主动的位置。     

避暑山庄的亭台楼阁榭建筑艺术

承德避暑山庄是我国现存最大的清代皇家园林,其造园艺术运用了大量古代建筑形式并有所变 化发挥,还借鉴了不少江南园林的处理手法。本文从建筑艺术的角度,就园内亭、台、楼、阁、榭的造型特色、空间 艺术处理及构景理念作了介绍和阐述。     

青海汉代漆奁的脱水报告

采用聚乙二醇滴渗喷涂、真空冷冻干燥等浸饱水漆木器的脱水处理方法,对北方干燥地区槽朽漆木器进行了脱水保存。处理后器物尺寸稳定,色泽良好,保持了原貌。     

Voltage and current sources of high latitude thermospheric movements

In studies of the high latitude thermospheric movements caused by electromagnetic fields, the driving source in the magnetosphere is usually treated as a voltage source. There may be situations where the driving source can be treated as a current source. The transient behaviours of the thermospheric movement due to the two sources are quite different. We illustrate this.     

在硫代硫酸钠—醋酸铅双组分体系中黄铜器表面着色的动力学研究

通过调整流代硫酸钠一醋酸铅双组分试液的不同浓度比以及控制着色温度、试液酸度和着色时间,确定黄铜试样表面着以不同颜色的条件。用x射线衍射方法测定不同颜色表面膜的成分,并对膜形成的动力学进行了探讨．为研究黄铜着色提供了一种新的方法。     

甲基三甲氧基硅烷对砂岩石刻封护性能的实验室研究

为了解砂岩石刻用甲基三甲氧基硅烷材料封护处理后的各项性能,选择四川省内风化较严重的摩崖造像区的砂岩作为实验样品,采用浸水、酸雾、盐老化、光老化、循环破坏等方法对材料的憎水性、透气性、耐老化性能进行实验测试。试验表明,砂岩样品用甲基三甲氧基硅烷封护处理后其憎水性、耐老化性都有较大的提高,透气性没有太大的改变,半涂样品经循环破坏处理后,表面出现开裂现象。通过研究表明,甲基三甲氧基硅烷材料处理砂岩后其憎水性和耐老化性都较好,但循环破坏实验提示,甲基三甲氧基硅烷材料处理石刻可能对其表面产生负作用,在石刻保护中应慎重使用。     

A comparative experiment in the consolidation of cremated bone

This experiment assessed whether consolidation of cremated remains facilitated cross‐sectioning and grinding, which often are required for microstructural analyses such as the histomorphometric estimation of age and the examination of pathological lesions. Green, bovine femoral diaphyses were cremated at three temperature ranges (346–357°C; 610–755°C; 684–838°C) in an electric furnace and then consolidated with Acryloid B‐72 or Butvar B‐98 using simple brushing and immersion techniques. After consolidation was complete, bone pieces were cross‐sectioned and ground to a thickness of 100–120 μm. Results indicate that specimens treated with Acryloid B‐72 are harder and stronger than Butvar treated and untreated control specimens. Acryloid B‐72 is, therefore, recommended for the consolidation of cremated remains in preparation for microstructural analysis. Copyright © 2004 John Wiley & Sons, Ltd.     

The Census as an Accurate Source of Information: The Value of Mid-Nineteenth Century Manufacturing Returns

Every census of the United States contains numerous errors, as many in the population returns as elsewhere, but on this account it has never been concluded that these returns are useless. In the absence of better data they afford an approximation of good value and the results they exhibit are treated as matters of verity. Such in their aggregate they are, while in many of their details they may be grossly defective.     

透水气材料在水敏感性文物保护中的应用

部分水敏感性文物,在保护过程中不宜与水直接接触,一般常用不易普及的低压吸力操作台或回潮箱等设备进行保护操作。本文介绍了一项容易普及且使用方便的替代技术,即采用透水气材料对水敏感性文物进行保护处理,并对常用透水气材料、使用方案、应用方向和注意事项进行了归纳总结。     

豆浆水在中国书画修复中应用性能研究

书画文物由于材质脆弱,容易受修复材料的影响。为探讨豆浆水在书画文物修复中的应用性能, 采用宣纸为纸样通过模拟加速试验测试了豆浆水处理后纸张的物理性能、聚合度、表面形态和化学结构 的变化。结果表明,豆浆水处理后,纸张纤维表面和蛋白质形成更多的氢键,可以提高纸张的抗水性能, 对纸张聚合度影响低于胶矾水,扫描电镜结果表明豆浆水处理后纤维表面形成一层胶状物质。本研究 为豆浆水的应用提供了依据。     

Hydrogeomorphic Effects of River Training Works: the Case of the Allyn River,NSW

Since 1955 the NSW Department of Water Resources has undertaken extensive river training works on many NSW streams. In the Hunter Valley alone over $23 million have been spent and more than 850 km of channel have been treated Published work suggests that river training works are usually undertaken in response to a pre-existing problem of river instability but can also induce adverse hydrogeomorphic effects. One of the treated streams, the Allyn River, had been supposedly degraded by the constructed works. It was alleged that vegetation clearing, channel excavations, alignment straightening and bank protection works had decreased roughness thus increasing velocity and flood frequency. As a result, what were thought to be relatively moderate floods were eroding the banks and destroying the floodplain. A critical evaluation of the available hydraulic, hydrologic and geomorphic data revealed that the river training works were a response to, rather than a cause of river instability.     

Pre-Alexandrine Phoenician staters from northeastern Arabia

Five Phoenician staters from northeastern Saudi Arabia, four of them previously unpublished, are presented and discussed. The potential significance of Phoenician material in this region is treated briefly.