岩石磁化率各向异性测量及其数据处理方法

岩石的磁化率各向异性参数(A.M.S.),在地质科学研究中的应用已受到越来越多的重视。目前测量A.M.S.的仪器主要有旋转磁力仪和卡帕桥。结合笔者的实践,本文比较详细地介绍这两类仪器用于进行各向异性测量的原理以及数据处理方法。     

Fouling and cleaning of membrane--a literature review

1　ＩｎｔｒｏｄｕｃｔｉｏｎＤｕｒｉｎｇｔｈｅｐａｓｔｆｅｗｙｅａｒｓ,ｍｅｍｂｒａｎｅｓｅｐａｒａｔｉｏｎｓｈａｖｅｂｅｃｏｍｅｍｏｒｅｗｉｄｅｌｙｕｓｅｄ,ａｎｄｒｅｐｌａｃｅｄｓｏｍｅｏｆｔｈｅｃｏｎｖｅｎｔｉｏｎａｌｃｏｎｃｅｎｔｒａｔｉｏｎｔ?..     

多级A/O废水处理工艺的理论研究

多级A/O工艺是结合A/O工艺理论、非稳态理论发展而成的新型污水处理技术,相对于传统污水处理技术,多级A/O工艺提高了对氧利用效率,增强了脱氮能力,并且有效避免了污泥膨胀现象的发生,应用前景十分广阔。     

双酚A体外类雌激素活性评价及其作用机制的初步研究

采用体外MCF-7细胞增殖试验检测了双酚A(BPA)的类雌激素活性，并用生长曲线分析、细胞周期分析、他奠昔芬拮抗试验和凋亡检测对其作用机制进行了初步探讨。结果显示BPA有明显刺激MCF-7细胞增殖的类雌激素活性；细胞周期分析BPA组细胞增殖指数均明显高于溶剂对照组；BPA刺激MCF-7细胞增殖的类雌激素活性可被Tam拮抗：BPA能明显抑制MCF-7细胞凋亡的发生。结果提示BPA刺激MCF-7细胞增殖的类雌激素活性作用机制可能是BPA与雌激素受体结合后，影响细胞增殖及细胞凋亡过程，从而产生一系列生物效应。     

混凝沉淀 A~2/0工艺处理化工、城镇混合废水

采用混凝沉淀 A2/0工艺处理化工、城镇混合废水。在化工废水经有效预处理的条件下,该工艺处理效果良好,出水水质达到《污水综合排放标准》(GB8978-1996)中的一级标准。     

Fetal presentation of morquio disease type A

A fetus with mucopolysaccharidosis type IV A (Morquio type A) is described. The family had one affected child exhibiting symptoms of classical Morquio A disease, and late in the subsequent pregnancy prenatal diagnosis was requested. At 23 weeks' gestation, moderate ascites was detected by detailed ultrasound scan and keratan sulphate was found in the amniotic fluid. The pregnancy was terminated by prostaglandin induction and the diagnosis of mucopolysaccharidosis type IV A was confirmed by demonstration of a deficiency of N-acetylgalactosamine-6-sulphate (GalNac-6-S) sulphatase in cultured amniotic cells and in post-mortem fibroblast cultures. The activities of β-galactosidase and arylsulphatase A were normal, ruling out Morquio disease type B and multiple sulphatase deficiency. These results indicate that mucopolysaccharidosis IV A (a disease that predominantly affects the skeletal system) may produce ascites in the fetus to such an extent that it can be detected by ultrasound.     

Subcellular localization of copper in tolerant and non-tolerant plant

The ability of Elsholtzia splendens Naki( E. splendens) to accumulate copper appears to be governed by its high degree of copper tolerance. However, the tolerance mechanism on the physiological basis is unknown. Using transmission electron microscope (TEM) and energy dispersive analysis of X-rays(EDX), the likely location of copper within the cells of the tolerant and non-tolerant was determined. Here the role of vacuolar and cell wall compartmentalization in this copper tolerant plant were investigated. A direct comparison of copper locations of E. splendens and the non-tolerant Astragalus sinicus L. ( A. sinicus ) showed that the majority of copper in the tolerant was localized primarily in the vacuolar, cell wall, on the plasmamembrane, beside lipid grains induced by copper pollution, in the chloroplasts and amyloids; but in the non-tolerant, copper precipitates only be observed on the plasmamembrane, in the chloroplasts and cytoplasm under copper exposure conditions that were toxic to both species. This revealed that the tolerant accumulates more copper in the vacuole and cell wall than the non-tolerant, where was regarded as the storage compartment of tolerant plant or hyperaccumulator for heavy metals.     

Decolorization and kinetics of photo oxidizing cationic blue X-GRL by UV/H2O2 system

ＩｎｔｒｏｄｕｃｔｉｏｎＲｅｃｅｎｔｌｙ,ｔｈｅｉｎｄｕｓｔｒｉａｌｔｅｘｔｉｌｅｗａｓｔｅｗａｔｅｒｈａｓｂｅｅｎｃｏｎｓｉｄｅｒｅｄｔｏｂｅａｓｅｒｉｏｕｓｐｏｌｌｕｔｉｏｎｐｒｏｂｌｅｍｔｈｒｏｕｇｈｏｕｔｔｈｅｗｏｒｌｄ.Ａｂｏｕｔ10000ｄｉｆ?..     

高山红景天愈伤组织的诱导及培养研究

分别以高山红景天根、茎、叶及种子萌发的子叶为外植体诱导出５种愈伤组织，并比较了这５种愈伤组织的生长速率及红景天甙的积累能力。通过对茎诱导愈伤组织的继代培养，初步选择了适宜的激素配比为３ｍｇ／Ｌ ＢＡＡ＋０．３ｍｇ／ＬＮＡＡ，最适温度范围为２１－２５℃，ｐＨ值为５．８。光照对愈伤组织生长影响不显著，但不利于红景天甙的合成。