14例布鲁氏菌病性胸锁关节炎患者临床特点

目的 总结布鲁氏菌病性胸锁关节炎患者临床症状、影像学表现、实验室检查特点,为诊断及治疗提供参考。方法 采用回顾性分析方法收集2013年8月—2023年2月呼伦贝尔市某医院布鲁氏菌科入院患者,整理分析流行病学特点、首诊情况、临床表现、临床体征、实验室检查、影像学检查、治疗及预后情况。结果 14例布鲁氏菌病性胸锁关节炎患者,其中男性11例,女性3例,14例均有明确流行病学史。临床表现为关节疼痛(14例)、发热(10例)、乏力(10例)、多汗(6例)、寒战(5例)。临床体征以关节红肿痛(14例)、脾大(4例)、淋巴结肿大(3例)为主。实验检查异常以炎性指标升高为主,其中C反应蛋白升高14例,红细胞沉降率升高10例,另伴有血液系统损伤、肝损伤。14例患者均给予12周及以上足疗程联合抗感染治疗,其中治愈13例,手术治疗1例,有效率100%。结论 布鲁氏菌病性胸锁关节炎发病率较低,易出现误诊漏诊,临床应注意鉴别,若早发现、早诊断、早治疗,临床预后较好。

空间碎片激光测距研究进展

激光测距技术作为空间目标距离测量精度最高的手段,在空间碎片测量与监测领域发挥了重要作用。本文介绍了国内外空间碎片激光测距技术的发展历程与目前的技术水平,总结了空间碎片激光测距技术在空间目标轨道确定、空间环境研究以及空间目标特征分析领域的应用研究,提出了空间碎片激光测距技术在多站联合测量、红外波段测量技术以及白天激光测距几个方向的发展趋势。

Effectiveness of Soil Conservation Methods in Preventing Red Soil Erosion in Southern China

Rainfall, runoff(surface runoff and interflow) and soil loss were recorded from 2002 to2005 in an experiment with four treatments on sloping red soil land in southern China. Treatments consisted of bare sloping ground(control check, CK),interplanting with soybean in spring or radish in autumn(I), level terrace(i.e., grass planted on the riser and bunds built at the edge of a bench terrace)(II), and level terraces of orchards with Bahia grass planted on the riser(III). The surface runoff and erosion in treatment II and III during the four years were low despite the occurrence of potentially erosive rains. By contrast, the CK plot had both the highest surface runoff coefficient and the highest sediment yield among all the plots. The surface runoff and soil erosion of the CK plot significantly differed from that of the treatment plots(p < 0.05). Additionally,Significant differences between the interflow of the CK plot and that of the treatment plots was found from April to August(p < 0.05). However, no significant differences between the CK and treatment plots were found from January to March and September to December. The order of the plots in terms of surface runoff coefficients and soil losses was: CK > I > III > II, whereas their order in terms of interflow was II > III > I > CK. The effects of treatment II were excellent, indicating that level terrace(i.e., grass planted on the riser and bunds built at the edge of a bench terrace) can be an excellent practice for soil and water conservation on sloping red soil land. Soil loss in southern China can be reduced through the widespread use of this approach.

原位微生物技术在亮马河水质提升中的应用

原位微生物技术通过激活水体中的土著微生物快速降解有机物,其在亮马河应用的结果显示,下游COD和TP较上游出现明显下降,因NH 3-N本底较低,变化趋势不明显。该技术运行60 d后,监测数据显示下游水生生物种类明显增加。从底栖动物种类数的分布情况看,下游点位底栖动物种类数明显多于上游点位,并且下游出现了中-高需氧型种类,与上游相比,下游调查河段的底质已能够适合多种底栖动物的生存和繁衍,底质生境较上游有较明显改善。原位微生物技术在提升水质的同时改善了底泥,并有利于水体多样性的恢复,一定程度上提升了水体的自净能力。