浅谈加强土地工程管理的技术措施

土地工程管理是一门完整的学科,具有完整的教学体系,它主要包括土地资源学、土地法学、土地规划学、土地利用学、土地经济学、地籍管理学、土地信息管理(土地信息系统)等,本文对如何加强土地工程管理进行了简要研究与探讨.     

新庄煤矿保水采煤的环境影响及环境经济损益分析

介绍了宁正矿区新庄煤矿可采煤层、含水层及隔水层的分布情况;从矿井生产安全、保护地下水资源、减少矿井水排放的角度综合考虑,提出保水采煤开采方案;分析了保水采煤方案对地下水环境的影响,并与原设计方案的环境效益及经济损失进行了对比。     

粉土路基填筑碾压试验分析

针对粉土路基的特殊工程性质和难以压实的特点,系统分析了振动压路机的碾压机里,根据现场碾压试验研究了不同碾压组合和松铺厚度对粉土碾压效果的影响,提出粉土碾压的优化参数和碾压结合.     

强化专业，好日子就在后头

吴小寒今年17岁。去年配了一副左右各150度的近视眼镜，但最近感觉眼睛很疲劳，有时候看完黑板再看书本时，要几秒钟才能适应，影响了学习。马上高三了，父母很着急。听说重庆精益高登眼镜的验光技术远近闻名且在实行新的视觉验光流程，趁6月高考放假的时间，父母赶紧带他到解放碑总店找专家检查。     

十大实用销售沟通技巧(上)

销售情景1:能不能便宜点错误应对:1.价格好商量……2.对不起,我们是品牌,不打折。问题诊断:客户买东西时都会想要更便宜点,这是正常的消费心理,并不是决定他买不买的主要因素。销售人员在接待客户的时候,会面对客户成百上千的问题,但这些问题归纳分类后其实只有两种问题:真问题和假问题。我们的很多销售人员并不知道客户的问题中大     

铜箔胎聚合物改性沥青耐根穿刺防水卷材的性能及应用

介绍了铜箔胎聚合物改性沥青耐根穿刺防水卷材--ARC721耐根穿刺卷材的构造、性能特点以及在种植屋面体系中的应用.ARC721耐根穿刺卷材具有化学阻根剂和铜箔胎的双重阻根性能,阻根效果好,同时又不影响植物正常生长,具有很好的推广应用价值.     

双层包覆红磷的制备及阻燃聚丙烯的研究

采用沉淀法制备双层包覆红磷（DERP），通过FESEM、XPS、TG、吸湿性测试对其进行了表征。结果表明：红磷表面形成均匀的包覆层，包覆率达到97．18％，包覆后的红磷吸湿性也得到较大改善，着火点提高到430℃。将阻燃剂DERP添加到聚丙烯中，质量分数为5％时，阻燃级别可达到UL94V-0级。     

Spatial distribution of chromium in soils contaminated by chromium-containing slag

To evaluate the metal chromium (Cr) contamination of soil at a chromium-containing slag site by ferrochromium production, the contaminated sites, under slag heap, in the vicinity of slag heap and arable soils near the outlet of sewer channel, and unpolluted site 5 km away from one ferroalloy plant in Hunan Province, China, were selected. The concentrations of total Cr and water soluble Cr in bulk soil samples and profile depth samples were determined. The results show that the soils in the vicinity of slag heap have the highest total Cr content followed by the soils under the slag heap and near the outlet of sewer channel of the factory. The mean concentrations of total Cr in the top soils at above three contaminated locations exceed the critical level of Secondary Environmental Quality Standard for Soil in China by 3.5, 5.4 and 1.8 times. In most Cr polluted soils, total Cr has a relative accumulation in soil depth of 40-60 cm, but this trend is not found in unpolluted soils. The average concentrations of water soluble Cr (Ⅵ) in top soils under slag heap and in the vicinity of slag heap are 176.9 times and 52.7 times higher than that in the uncontaminated soils, respectively. However, water soluble Cr (Ⅵ) contents in soils near sewer channel are all low and the values are close to that in the uncontaminated soils. Although water soluble Cr (Ⅵ) content in soil profiles decreases with soil depths, it in soils under slag heap maintains a high level even at a depth of 100-150 cm. The results imply that the transportation of Cr (Ⅵ) can result in a potential risk of groundwater system in this area.     

白芨加明胶海绵栓塞治疗子宫肌瘤的临床应用

目的探讨白芨加明胶海绵栓塞治疗子宫肌瘤的临床应用,了解此方法的疗效、不良反应及并发症.方法采用Seldinger技术,对21例子宫肌瘤患者进行选择性子宫动脉栓塞.通过动脉导管注入白芨微粒和明胶海绵颗粒,阻断肌瘤供血.结果血管造影发现子宫肌瘤主要由双侧子宫动脉供血,血供丰富,双侧子宫动脉栓塞后,肌瘤部位血管征象消失,治疗后3～6个月随访结果表明:肌瘤比治疗前缩小38%～90%,临床症状改善,1例因感染而行子宫切除.结论白芨加明胶海绵栓塞治疗子宫肌瘤近期临床效果好,远期疗效尚有待观察.