房地产泡沫吹大过程及防治分析

由美国次贷危机引发的这场金融风暴,对各国房地产业的健康发展敲响了警钟。我们应该理性看待房地产虚拟资产的特性,用好货币政策,保持信息通畅,促进中国房地产业的健康发展。     

Degradation of Emerald green in oil paint and its contribution to the rapid change in colour of the Descente des vaches (1834–1835) painted by Théodore Rousseau

Abstract

Descente des vaches (1836) by Théodore Rousseau in the Mesdag Collection in The Hague is barely readable and its paint layers are in poor condition. The surface of the painting is strongly deformed and cracked, the whole painting has darkened and especially the greens have lost all or most of their colour resulting in brown passages. Large passages of the painting that were painted with multiple thick and medium-rich layers have darkened dramatically. This paper proposes that the degradation of Emerald green (Cu(C₂H₃O₂)₂·3Cu(AsO₂)₂, copperacetoarsenite) – the main green pigment used in this painting – is a significant factor in the cause of the darkening. Electron backscatter images reveal that the Emerald green particles are shown different degrees of degradation: from partially to completely disintegrated. Elemental maps show that arsenic is distributed throughout the paint cross section, with relatively higher concentrations around iron- and aluminium-containing particles, and in the varnish layer. Imaging-Fourier-transform infrared microscopy detects copper soaps in the degraded Emerald green-containing layers. Analytical data from four paint cross sections strongly suggest that Emerald green reacts with free fatty acids derived from the binding medium forming copper soaps and mobile arsenic-based species. Chemical laboratory experiments fully support this hypothesis. Emerald green and palmitic acid in chloroform form copper palmitate and arsenic trioxide (arsenolite, cubic) under room temperature and normal light conditions. The degradation of Emerald green particles in Descente des vaches has resulted in a loss of light-reflecting surfaces and in newly formed compounds in the paint, both contribute to the colour change from green to brown.     

洗衣粉和肥皂对空心菜、香瓜种子萌发的影响

以不同浓度的洗衣粉、肥皂液处理空心菜、香瓜种子，发现不同浓度的洗衣粉，肥皂液均能不同程度抑制种子萌发及幼苗生长，且相同浓度洗衣粉、肥皂液对种子生长影响也存在差异。     

一枝黄花沐浴液的研制

用中草药一枝黄花提取液、阴离子表面活性剂和两性表现活性剂为主要原料，采用配方法，调配出药效型的复方沐浴液。使用结果表明：该沐浴液去污力强，擦浴后感觉舒适。     

中国内地青春偶像剧的现状、特点及发展趋向

中国内地青春偶像剧已经成为继古装剧、公安剧之外的一大样式。它的核心就是反映当下年轻人的生活,表达年轻人对爱情、事业的生活态度。一般说来,中国内地青春偶像剧呈现出偶像、浪漫、时尚和流行音乐元素,通过青春偶像剧的形式来表现真善美,从而提高青春偶像剧的品住。中国内地青春偶像剧未来将在题材内容选择方面更加注重多样化和贴近性,制作更为精良,并拥有较高的收视率。     

化学实验教学中的素质教育浅议--以"高级脂肪酸的钠盐-肥皂的制备"为例

教育改革的一个主题，是实现应试教育全面向素质教育转轨。传统的应试教育体制严重束缚了学生个性和创新思维的发展。本文以化学实验为载体，探讨化学实验教学中的素质教育。     

利用茶籽制取液体肥皂的研究

阐述了从茶籽中提取茶油和茶皂素的方法以及利人茶油和茶皂素制作液体肥皂的过程．将茶油脱色皂化后配入茶皂素便可制成一种新型纯天然洗涤剂．对其性质测试,结果满意     

The removal of metal soaps from brass beads on a leather belt

Abstract

Severe corrosion was found covering the brass beads on several beaded belts. The corrosion was a mixture of copper soaps and zinc soaps, and was so thick in some places that it completely buried the brass beads. One of these belts was chosen as a test case for cleaning. The details of the cleaning are described, as are the effects of the corrosion process on the beads and surrounding organic materials. Two supporting studies are also reported: tests of the solubility of the corrosion in a variety of organic solvents, including mixtures of ethanol and petroleum-based solvents; and tests of leather dressings and other coatings on brass, copper, and zinc coupons in various relative humidities (RH), to determine what values of RH could be recommended for storage.     

论电视肥皂剧的内在运行机制:一个结构主义的视角

以结构主义的视角介入电视肥皂剧的内在运行机制研究,所意图探讨的是作为一种特殊的虚构文本,电视肥皂剧是如何通过其叙事方式上的独特手段——类型化与反类型化、连续性、虚构性,进而使受众和角色的时间在一种想象力的虚构空间中实现有机融合。作为沟通公共空间与私人领域的虚构文本,电视肥皂剧为现实生活中的观众提供了一种美学意义上的超脱。但不可忽视的是,这一类型的想象力运作机制仍然需要探索更为丰富的路径和呈现机制来回应现实中存在的问题。     

C S Smith’s development of a viewpoint

Cyril Smith’s distinguished career in industrial metallurgy was wonderfully transformed into his masterful engagement with the history of science and technology. These two phases were bridged by a piece of research that particularly pleased him, as epitomising his general ideas of form and organisation. It was based on his conception of the 2D soap froth as a prototype for metallic grain growth (and much else). He rightly sensed that it would be an enduring source of understanding of some of the complex effects that he so admired in materials.