湘南桂北地区铀矿地质-水文地球化学找矿标志及找矿模式

NNE向走滑断裂系统控制着湘南桂北地区铀矿分布及铀矿水地球化学环境，本通过总结湘南桂北地区铀矿地质，铀矿水地球化学特征，提高该区地质－水地球化学找矿模式及其评价准则。     

基于熵的彩色晕渲图设色方案辅助设计

在熵理论和地图分级评价模型的基础上,提出了基于熵的彩色晕渲图设色方案辅助设计方法,并进行了晕渲制图实验.从客观信息量测定和主观评价结果的分析表明,本文方法制作的晕渲图色彩过渡自然,地形区分明显,层次清晰,能更好地表达地貌形态.     

准噶尔和塔里木盆地不同岩性岩电参数研究

准噶尔盆地和塔里木盆地存在着各种不同岩性的岩石,大量的岩电实验证明,不同的岩性岩电参数不同,砂岩以及砂岩中的低阻油藏、砾岩、碳酸岩盐、火山岩其岩电参数有很大的差别;对同一岩性,高温高压下的岩电参数和常温常压下的岩电参数有很大的差异;不同矿化度下的岩电参数不同,岩石的润湿性对岩电参数也有较大的影响.本文给出不同岩性岩电参数实验结果并分析造成这种差异的原因.     

统计决策树下的城市地址集中文分词

不同于常规的需要依赖城市地址词典或规则库的地址分词模型,提出不依赖地址词典、基于海量地址数据挖掘的分词方法。该方法结合统计规律计算地址要素在地址数据集中的分布特征,挖掘地址数据中分词的后缀点和落差点,根据后缀点和落差点的相对位置关系构建统计决策树提取地址要素;并采用深圳市建筑物地址普查数据进行验证,形成对当前地址地名词典的有益补充。     

当前气候、古气候和生境异质性对中国常绿阔叶木本植物生物地理格局的影响（英文）

Understanding biogeographic patterns and the mechanisms underlying them has been a main issue in macroecology and biogeography, and has implications for biodiversity conservation and ecosystem sustainability. Evergreen broad-leaved woody plants(EBWPs) are important components of numerous biomes and are the main contributors to the flora south of 35°N in China. We calculated the grid cell values of species richness(SR) for a total of 6265 EBWP species in China, including its four growth-forms(i.e., tree, shrub, vine, and bamboo), and estimated their phylogenetic structure using the standardized phylogenetic diversity(SPD) and net relatedness index(NRI). Then we linked the three biogeographical patterns that were observed with each single environmental variable representing the current climate, the last glacial maximum(LGM)–present climate variability, and habitat heterogeneity, using ordinary least squares regression with a modified t-test to account for spatial autocorrelation. The partial regression method based on a general linear model was used to decompose the contributions of current and historical environmental factors to the biogeographical patterns observed. The results showed that most regions with high numbers of EBWP species and phylogenetic diversity were distributed in tropical and subtropical mountains with evergreen shrubs extending to Northeast China. Current mean annual precipitation was the best single predictor. Topographic variation and its effect on temperature variation was the best single predictor for SPD and NRI. Partial regression indicated that the current climate dominated the SR patterns of Chinese EBWPs. The effect of paleo-climate variation on SR patterns mostly overlapped with that of the current climate. In contrast, the phylogenetic structure represented by SPD and NRI was constrained by paleo-climate to much larger extents than diversity, which was reflected by the LGM–present climate variation and topog-raphy-derived habitat heterogeneity in China. Our study highlights the importance of embedding multiple dimensions of biodiversity into a temporally hierarchical framework for understanding the biogeographical patterns, and provides important baseline information for predicting shifts in plant diversity under climate change.     

洋山深水港海域多年来海床冲淤变化及其影响因素分析

海床冲淤变化对港口与航道工程建设非常重要。由于泥沙供给、人类活动和其他等因素的影响,海床冲淤变化非常复杂。洋山深水港是一个新兴的深水港口,是上海国际航运中心重要的组成部分,它的建设引起了各方的广泛关注。目前,洋山水深港一、二、三期港区在潮流运动和定期疏浚下保持着良好的水深。四期港区工程是世界上最大的全自动化深水码头,2017年12月以开港运行。本论文基于大量的地形资料、水文泥沙资料,分析了整个洋山深水港多年来的海床冲淤变化和近期四期工程海域海床冲淤变化。结果显示：1998-2010年整个洋山港区海床冲淤变化表现为较大幅度的冲淤,在洋山主通道内呈现为"南淤北冲"的格局,但是颗珠山汊道一直以来均表现冲刷的趋势;四期港区水域近一些年来也表现为一个冲刷的趋势,多年年均冲刷幅度0.7m左右;讨论了外界泥沙供给、港口工程陆域边界封堵、港池疏浚和由此带来的水流的变化以及泥沙水力特性等因素的对洋山港海域海床冲淤变化的影响,在众多因素中,颗珠山汊道的存在（或保留）对洋山西部水域或四期港区水域冲刷有着积极的作用,它的存在所产生的落潮作用对四期港区的水深维护起到重要的正面影响。     

百防汤加白醋熏洗治疗慢性肛周湿疹50例临床观察

目的：观察百防汤加白醋熏洗治疗慢性肛周湿疹的临床疗效。方法：将150例慢性肛周湿疹患者随机分为3组,每组各50例。治疗组采用百防汤加白醋熏洗坐浴治疗,对照1组采用曲安奈德益康唑乳膏适量外涂治疗,对照2组单纯用百防汤熏洗坐浴治疗。比较3组治疗结束时及随访3个月后的临床疗效。结果：治疗结束时总有效率治疗组为92.0%,对照1组为78.0%,对照2组为68.0%,组间比较,差异有统计学意义（P<0.05）;治疗后3个月随访时总有效率治疗组为72.0%,对照1组为46.0%,对照2组为56.0%,组间比较,差异有统计学意义（P<0.05）。结论：百防汤加白醋熏洗治疗慢性肛周湿疹有较好的近期及远期疗效。     

三维地籍电子产权证的设计与实现

随着土地从粗放型向着集约化发展,三维地籍的建立势在必行,与之配套的三维产权证,对于三维地籍产权登记不可或缺。文中清晰阐述了三维地籍产权登记对象即三维产权体的概念;以传统房地产证为例分析了二维地籍产权证的设计现状,进而归纳得到地籍产权证的设计目的,并进一步提出三维地籍产权证的设计原则;遵从以上原则具体阐述三维产权证的内容,设计一种C/S架构制作和B/S架构发布相结合的三维地籍电子产权证,并以深圳市几宗三维产权体为实例给予具体构建。     

Toxicity of Chlorpyrifos and Dimethoate to the Ciliate Urostyla grandis,with Notes on Their Effects on Cell Ultrastructure

Chlorpyrifos and dimethoate are overused agricultural pesticides that can trigger trophic cascades, resulting in toxicity to both terrestrial and aquatic organisms as well as altered ecosystems. In previous studies, substantial attention has been given to the effects of pesticides on vertebrate species and, to a lesser extent, species of zooplankton. The present study was designed to show that the fission time effective concentration in ciliates is a potential aquatic detection index for environmental monitoring. The ciliate Urostyla grandis was treated with doses of chlorpyrifos and dimethoate. After exposed to the pesticides, the LC_(50)(i.e., concentration that killed 50% of the ciliate cells within 24 h) values were 0.029 mg L~(-1) for chlorpyrifos and 0.0685 mg L~(-1) for dimethoate. The fission time effective concentrations after 168 h of exposure were 0.0075–0.0093 mg L~(-1) for chlorpyrifos and 0.2640–0.2750 mg L~(-1) for dimethoate. These results show that the fission time effective concentration is lower than the LC_(50) value in ciliates, indicating that fission time effective concentration is more suitable than the LC_(50) value for environmental monitoring using ciliates. The effects of chlorpyrifos and dimethoate on ciliate cell ultrastructures included agglutination of chromatin in the macronucleus, protruded and discontinuous macronuclear and micronuclear membranes, loss of integrity of mitochondrial membranes and contents, and abscission and deformation of the adoral zone of membranelles.     

大亚湾西南海域尖笔帽螺2020年7月暴发期内的分布特征

尖笔帽螺是一种分布广泛的翼足类生物,在食物网与生物地球化学循环中起着重要作用。2020年7月,大亚湾出现高密度尖笔帽螺,给当地生态安全带来潜在风险。文章利用浮游生物成像仪（PlanktonScope）,以定点的方式对大亚湾西南海域的环境因子与尖笔帽螺密度进行采样,并对大亚湾高密度尖笔帽螺的分布特征进行研究。结果显示：在水平方向上,尖笔帽螺主要分布于西部湾口及长湾附近海域,其他海域分布相对较少;在垂向上,尖笔帽螺多分布于高温低盐的表层,低温高盐的下层水体分布较少;体长分布方面,湾口西部及其北侧海域尖笔帽螺体长较长,小辣甲西侧、北侧海域尖笔帽螺体长偏短,湾口中部海域体长远小于其他区域。通过分析结果发现,此次大亚湾湾内高密度尖笔帽螺存在随外海海流输入的可能;温盐分布结果表明,尖笔帽螺多出现在海水表层,其垂直分布可能也受海水分层及海流的影响。通过对尖笔帽螺分布特征的归纳与讨论,可以为后续该种生物的进一步溯源提供参考。