南秦岭晚古生代伸展结构特征及意义

采用构造岩石地层－沉积盆地－热水成矿流体及沉积组合－要造变形分析等,对秦岭造山带晚生代菜构造特征及意义进行了系统研究,结果表明：秦岭造山带从加里东期末－海西期末一直处于（剪切）伸展体制下,形成一系列伸展构造,其伸展构造样式主要有同生断裂,剥离断层,陆表海域中的盆－岛构,守堑－地垒式盆地构造,三级热水沉积成矿盆地,叠合沉积盆地内的伸展构造样式有褶叠层,分层前切流变构造,滑塌同沉积构造,阶梯状同生断层等,这此伸展要造样式显示秦岭微板块是以伸展作用发生陆壳变形的,可称为秦岭型伸展的菜构造样多,伸展要造是主要控矿构造,低序次同生断裂是含矿热水运移的通道,三级热水沉积成矿盆地是聚矿空间和热水沉积成矿场所,热水喷溢通道口及含矿热水沉积岩相是矿层赋存的部位,认为秦岭菜的构造样式对成矿学和区内的矿产资料与预测有重要的理论和应用价值。     

Detachment within subducted continental crust and multi-slice successive exhumation of ultrahigh-pressure metamorphic rocks: Evidence from the Dabie-Sulu orogenic belt

Although tectonic models were presented for exhumation of ultrahigh-pressure （UHP） metamorphic rocks during the continental collision, there is increasing evidence for the decoupling between crustal slices at various depths within deeply subducted continental crust. This lends support to the multi-slice successive exhumation model of the UHP metamorphic rocks in the Dabie-Sulu orogen. The available evidence is summarized as follows： （1） the low-grade metamorphic slices, which have geotectonic affinity to the South China Block and part of them records the Triassic metamorphism, occur in the northern margin of the Dabie-Sulu UHP metamorphic zone, suggesting decoupling of the upper crust from the underlying basement during the initial stages of continental subduction; （2） the Dabie and Sulu HP to UHP metamorphic zones comprise several HP to UHP slices, which have an increased trend of metamorphic grade from south to north but a decreased trend of peak metamorphic ages correspondingly; and （3） the Chinese Continental Science Drilling （CCSD） project at Donghai in the Sulu orogen reveals that the UHP metamorphic zone is composed of several stacked slices, which display distinctive high and low radiogenic Pb from upper to lower parts in the profile, suggesting that these UHP crustal slices were derived from the subducted upper and middle crusts, respectively. Detachment surfaces within the deeply subducted crust may occur either along an ancient fault as a channel of fluid flow, which resulted in weakening of mechanic strength of the rocks adjacent to the fault due to fluid-rock interaction, or along the low-viscosity zones which resulted from variations of geotherms and lithospheric compositions at different depths. The multi-slice successive exhumation model is different from the traditional exhumation model of the UHP metamorphic rocks in that the latter assumes the detachment of the entire subducted continental crust from the underlying mantle lithosphere and its subsequent exhumation as a whol     

高度近视黄斑裂孔性视网膜脱离25例临床观察

目的：探讨巩膜冷冻、环扎及外放液玻璃体腔注气手术治疗高度近视黄斑裂孔性视网膜脱离的疗效及适应范围．方法：回顾性分析1997-10～2002-10，在内蒙古林业总医院行巩膜冷冻、环扎及外放液玻璃体注气治疗的高度近视黄斑裂孔性视网膜脱离患者25例(25眼)的临床资料．结果：术后随访6～12个月，25只眼视网膜完全复位．术后视力≥0．05者21只眼，最佳视力为0．5．结论：适度的巩膜冷冻，可以减少视网膜和脉络膜血管的损伤及术后并发症的发生，巩膜环扎缩小玻璃体腔减轻增殖性视网膜玻璃体病变的牵引，玻璃体腔注气促使视网膜复位，外放液是治疗黄斑裂孔性视网膜脱离的有效方法之一．     

黄斑裂孔性视网膜脱离手术疗效分析

目的：探讨巩膜冷冻、环扎及外放液玻璃体腔注气手术，治疗高度近视黄斑裂孔性视网膜脱离的疗效及适应范围．方法：回顾性分析1996年10月至2002年10月。在我院行巩膜冷冻、环扎及外放液玻璃体注气术治疗的高度近视黄斑裂孔性视网膜脱离患者24例（24）眼的临床资料．结果：术后随访6～12个月，24只眼视网膜完全复位．术后视力≥0.05者21只眼，最佳视力为0．5．结论：适度的巩膜冷冻，可以减少视网膜和脉络膜血管的损伤及术后并发症的发生，巩膜环扎缩小玻璃体腔减轻增殖性视网膜玻璃体病变的牵引，玻璃体腔注气使视网膜复位，外放液是治疗黄斑裂孔性视网膜脱离的有效方法之一．     

The effect of adhesion on survival and growth of microorganisms

Summary Adhesion of microorganisms to solid surfaces or water/air interfaces can significantly influence cellular metabolic activity, development and viability. Attachment is of advantage particularly for organisms growing under oligotrophic or otherwise extreme conditions. However, the ability to detach and migrate is of vital importance when prevailing conditions become too harsh or in situations of population explosion.Adhesion can cause alterations in the physical and chemical properties of substratum surfaces as well, by means of degradation, aggregation, emulsification etc.     

海涂围垦区盐碱粉壤土坡面径流剥蚀过程影响试验

为探讨盐碱土边坡径流-侵蚀过程规律,通过人工模拟土槽径流冲刷试验定量分析坡度和上方来水流量对海涂围垦区盐碱粉壤土边坡径流剥蚀过程的影响。试验结果表明:上方来水流量和坡度对径流剥蚀速率均有显著正效应且互相制约,剥蚀速率与坡度和径流量存在幂指数函数关系;坡面单宽径流能耗随坡度和上方来水流量的增大均显著增大(P0.01),单宽径流能耗ew与上方来水流量q、坡度θ存在幂指数函数关系;在坡度5°~15°条件下,临界单宽径流能耗为15~40 J/(h·m),而在高坡度20°~40°条件下,临界单宽径流能耗接近零;剥蚀速率与单宽径流能耗之间存在显著线性关系(R2=0.82),海涂盐碱粉壤土边坡只需较小径流能耗即可剥蚀表层土壤。     

爆破拆除烟囱的设计与应用

结合实爆成功的例子，重点阐述烟囱爆破拆除的设计原理和主要设计步骤，并提出实爆中应注意的安全技术措施和一些有待改进的问题。     

煤气厂含酚废水优势降解菌的驯化和分离

为了获得处理煤气厂含酚废水的高效菌株，以煤气厂废水处理设施的活性污泥为菌源，驯化、培养、筛选出3种降酚能力较强的菌株GPS-1、GPS-2、GPS-3。经初步鉴定，这3种菌株为假单胞菌属（Pscudomonas.sp）。通过降酚对比性试验，在500、1000、1500和2000mg/L时，GPS-1菌的降酚率比GPS-2和GPS-3菌的降酚率要高，为所选优势菌株。