经筋微创痛风石切除术联合枸橼酸氢钾钠应用于巨大痛风石患者中的效果及对神经体液的影响研究

目的:研究经筋微创痛风石切除术联合枸橼酸氢钾钠应用于巨大痛风石患者中的效果及对神经体液的影响。方法:选取安宁市第一人民医院从2020年11月~2022年4月收治的213例巨大痛风石患者作为研究对象。将其以电脑编号奇偶数字法随机分作研究组(n=107)及对照组(n=106)。对照组选用传统手术联合枸橼酸氢钾钠治疗,研究组则选用经筋微创痛风石切除术联合枸橼酸氢钾钠治疗。对比两组疗效,疼痛程度及关节功能,肾功能指标水平,神经体液因子水平。结果:研究组治疗总有效率高于对照组(97.19%vs 86.79%,P<0.05)。术后两组视觉模拟评分法(visual analogue scale,VAS)评分均低于术前,而美国特种外科医院(Hospital for Special Surgery,HSS)评分均高于术前;且研究组VAS评分低于对照组,而HSS评分高于对照组(均P<0.05)。术后两组各项肾功能指标水平均低于术前,且研究组低于对照组(均P<0.05)。术后两组各项神经体液因子水平均高于术前,但研究组低于对照组(均P<0.05)。结论:经筋微创痛风石切除术联合枸橼酸氢钾钠治疗巨大痛风石的效果较佳,可有效改善患者疼痛程度、关节功能、肾功能及神经体液因子水平。

基于恒速压汞技术的砂砾岩复模态特征表征

针对砂砾岩储层砾石、砂级颗粒和粘土级颗粒混杂堆积的复模态结构导致的复杂孔喉分布,应用恒速压汞技术假设多孔介质由孔径大小不同的孔隙和吼道构成的理论模型优势以区分孔隙和吼道的大小分布,对新疆百口泉油田百口泉组砂砾岩储层进行了直观、定量的测试分析。结果表明:(1)砂砾岩储层孔隙分布多呈单峰态,孔隙半径分布范围为53~559μm,平均214μm,砂砾岩储层喉道分布呈宽缓的多峰态,且主峰值喉道半径偏小(<5μm),喉道半径分布范围为1~29μm,平均为8μm,孔喉比亦表现为多峰态的分布特征,分布范围为5~295,平均46,砂砾岩储层喉道的极强非均质性是导致其储层微观结构复杂的决定性因素;(2)根据压汞曲线形态及不同孔径单元进汞曲线关系将其分为3类并对应研究区3种储层类型。第一类初期孔隙及喉道进汞一致且缓慢上升,后期发生不同程度的上翘,指示了该类储层孔喉比小,连通性好的特征,为较优质的储层。第二类初期表现为喉道进汞曲线大幅升高与孔隙进汞曲线分离,后期缓慢升高的特征,反映了该类储层喉道发育较差,孔隙发育尚可,整体为储集性能较好但渗流性能较差的特征。第三类压汞曲线表现为孔隙及喉道的进汞压力快速大幅升高趋势,指示了孔隙及喉道均不太发育且连通性较差的特征,为较差的储层类型。

贵州西南岩溶地质特征及常用勘察技术及应用

岩溶地区的地质构造复杂,地下水文网错综复杂,对工程建设影响程度很大。本文对贵州西南某工程地段岩溶类型、特征以及易引发的环境地质问题进行了分析;介绍了5种常用的水工环境勘察技术(TEM技术、GPS技术、GPR技术、PTK技术、RS技术)及其在岩溶地区的综合应用。

Seasonal Variation of Moisture Availability at Water-wind Erosion Crisscross Region in Northern Loess Plateau China

The objectives of the current study were to estimate evapotranspiration（ET） over the grassland and assess seasonal variation of moisture availability at the wind-water erosion crisscross region in the northern Loess Plateau of China. The Liudaogou Catchment which has the representative climatic and hydrological characteristics of the wind-water erosion crisscross region was chosen as the study location. The reference crop evapotranspiration（ET 0） was estimated by Penmen method, which was recommended by FAO56 and the evapotranspiration over the grassland（ET） was estimated by Penmen-Monteith equation using the observed meteorological data with time unit of 1 h. The soil moisture availability factor was defined by m a =ET/ET 0. The calculated results for 2006 indicated that the total ET 0 was slightly more than the total yearly precipitation and ET accounted for 37 % of that, ET increased distinctly after the intensive rainfall event in the rainy season. Most of the m a was less than 0.4 and its annual mean was 0.34. It was expected that the results provided a basis for studies on dynamic functional analysis of soil moisture, relationship between soil water and crop growth at the wind-water erosion crisscross region in the northern Loess Plateau.

预充磁变压器分析研究

本文中作者阐述了小容量预充磁变压器额定参数的算法,并且利用MATLIB建立仿真模型,验证了空载合闸过程中涌流的变化。

Optimum Combination Test of Erosion Gully in Black Soil Regions by Coal Gangue Reconstruction Soil

The black soil area in northeast China is greatly affected by hydraulic erosion.To inhibit the development of gully cutting and the secondary erosion on farmland,different size coal gangues and covering soils with change thicknesses combinations were selected to fill in-situ gully for hydraulic performance experiment.The hydraulic performance indexes of different combinations of large and small size gangue thicknesses and covering soil thicknesses were analyzed by the extreme learning machine(ELM)and particle swarm optimization(PSO).The results showed that the structure of large and small size coal gangues and surface soil under different thicknesses was affected by hydraulic and gravity.With the change of the thicknesses of coal gangue and covering soil,its effective channel and vertical infiltration process became more and more stable with the increase in drainage time,while the structure of small size coal gangue was the main hydraulic factor in reconstructed soil structure(p=0.016).The overall drainage performance showed a single peak trend,the optimal combination of drainage parameters and structure thickness was relatively concentrated;the drainage time parameters of different composite structures were found to have a certain linear relationship;the Pareto optimum of drainage performance was determined.The optimum thickness was 30-40 cm for large-sized gangue,30-60 cm for small-sized gangue,and 50-70 cm for covering soil,to meet the relatively good drainage performance and to ensure that secondary erosion was reduced,so as to achieve the purpose of controlling the gully.

《海洋地质学》教学创新与探索——以“需求牵引”为中心

目前,美国的地质学本科教育遇到如何满足学生需求等问题,而国内海洋科学教育也出现相似问题,表现为学生数量减少、课程体系陈旧、无法适应国家和社会重大需求等现象,对相关课程教学进行创新改革势在必行。在《海洋地质学》课程讲授中,以“需求牵引”为中心,提出“专业知识应用引导课程讲授,让学生明确学有何用”的教学理念,分别通过教材与应用在课件内容的融合、地方地质特色与理论知识点结合以及课程思政创新引领,在提升学生学习兴趣和专业方向的坚定性,巩固学生从事海洋科学事业的决心等方面取得显著效果。

膜下滴灌灌溉制度对土壤水盐空间分布及玉米产量的影响

灌溉制度对土壤水盐分布具有密切的关系,土壤水盐的分布又直接影响着作物产量。为了正确合理配置和利用水资源,改善试验区生态环境,减小肇州地区土壤含盐量对玉米产量造成的危害,选择肇州县水利科学试验站作为试验地点,试验结合膜下滴灌,设置4个水平的灌溉定额(200、300、400和500 m^3/hm^2),灌水次数分别为2次、3次和4次,测定并分析不同土层深度处土壤含水率、土壤可溶性盐浓度和玉米产量的变化。结果表明,灌溉定额为400 m^3/hm^2、灌水次数为4次时,玉米产量达到最大,且根系部位抑盐效果较好,是肇州地区较为经济合理的灌溉制度。