烟草香味物质及其形成的前体物质研究进展

烟草香味是评价烟叶及卷烟感官质量的重要指标。介绍了烟草及烟气中香味物质的分离、分析、鉴定的基本方法和技术以及研究成果，并对形成烟草香味的前体物质进行了探讨。     

广西烟草种植与地质背景相关性初探

烟草是一种经济作物,世界上有绿色黄金之称,本文通过农业地质调查认为,地质背景条件是制约烟草的产量及品质的重要因素。岩石是衍生土壤的基础物质。母质不同,其矿物组成,物理性状,地球化学元素丰度均不同,导致其衍生土壤的质地,矿物营养元素都有差异。其表现为土壤的先天性肥瘦不同。本文是在本区不同的地质背景的基础上,将晚古生代碳酸盐岩相区的棕色土划为最佳宜烟区,晚古生代及中生代的砂页岩相区划为较佳宜烟区,花岗岩风化壳的红土划为宜烟区和河漫滩,冲积扇等第四纪洪积砂黄壤划为劣宜烟区。     

企业地理信息服务内容和框架研究——以“数字烟草”为例

地理信息服务是地理信息发展的新阶段,当前的研究工作主要侧重在模式研究,而对于地理信息服务与企业和商业的具体应用研究目前还不多见。烟草行业是我国财政税收的重要来源,"数字烟草"是烟草企业的信息化的新的战略阶段。地理信息服务进入数字烟草将给烟草企业和相关商业带来革命性的变化。本文结合数字烟草论述企业地理信息服务的具体应用内容,并给出了相关的框架设计和应用实例。     

基于WebGIS的生态农业监测与决策支持系统设计——以云南省红河州烟草种植业为例

烟草种植业是唯一在我国第一产业中实现了类似于工业生产中的完全受控管理的行业,在生产管理中大量运用了工业企业的科学管理模式,因此该行业在第一产业中最有可能利用现代信息技术支持和实现数字化管理,本文以云南省红河州烟草种植生态农业示范区为例,设计并实现一个基于WebGIS的农业生态监测与决策支持系统,促进了红河州烟草种植行业的信息化,并为烟草行业发展循环经济,实现可持续发展提供强有力的技术支撑。     

试论地壳深部物质的侧向迁移——以松辽盆地、下辽河洼陷及其两侧的隆起区为例

地壳深部物质侧向迁移的过程,是洼陷区地壳内的低能量、低密度的物质不断被地幔高能量、高密度的物质所替换、取代和驱逐的过程,是地壳物质不断增加的过程。本文以松辽盆地、下辽河洼陷及其两侧的隆起区为例,讨论了地壳演化过程中的深部物质侧向迁移的地质作用及效应。     

青藏高原物质东流的岩石层力学背景探讨

利用地表大地热流观测资料、岩石生热率及热导率数据研究了三江和四川盆地 6个地区的岩石层平均温度结构及强度分布。结果表明 ,整个三江地区岩石层温度较高 ,而四川盆地温度较低 ;在岩石层强度分布上 ,四川盆地为高强度区 ,而三江地区则为低强度区 ;整个三江地区构成了一条青藏高原物质东流的低强度通道 ;由于四川盆地高强度块体的阻挡 ,青藏高原向东的物质流在此转向近南向 ,沿三江地区流逸 ;不同岩石层块体的强度差异可能是控制高原物质流动态势的重要力学背景之一。     

河南西峡金红石矿矿石特征及品位的概率分布

文章详细阐述了矿石类型、结构构造、物质组成、金红石产出特征及钛的赋存状态并对大量样品分析结果进行了统计分析,查明统计总体包含三个成因总体,反映了金红石的两种物质来源,并主要经历了两次地质-地球化学作用过程。此外,还对矿石中金红石TiO_2与全钛的关系进行了研究,基本查明二者为直线型正相关,相关系数为0.74。     

时空推理模型的烟草长势图谱分析与监测

光谱曲线的差异是由多种因素所致的,不同地物光谱反射曲线是地物对电磁波反射或发射差异的集中体现。由此可根据不同地物对入射电磁波反射形成的不同光谱曲线来区分不同的地物类型。据此,我们将地物光谱的时空特性变化作为研究的重点,运用地学图谱理论,结合超图时空概念模型,对地学现象时空特征及其规律的概念性表达,并使用面向对象技术结合影响烟草长势的时空因子,构建了一个实用的时空推理模型,并应用于烟草的长势监测。     

油菜花海,开在北纬30度的安仁

<正>这是作为一个农业大县的骄傲,虽然这里还有烟草、食用菌以及油茶树等等,却独独为油菜花设立了一个节日,叫"油菜花节",每年的春分时分,为油菜花喝彩     

光度法测定烟草中的微量硼

用HNO3和HCl消解烟草样本,在pH为4.2的乙酸-乙酸钠介质中,微量硼与铍试剂Ⅲ形成紫红色络合物,方法灵敏度高,简便易掌握,方法检出限为0.04μg/ml,线性范围为0～0.4μg/ml完全能满足烟草中微量硼的测定要求.     

宝珠寺水电站坝基排水孔异常逸出物及其工程危害

在阐述宝珠寺水电站工程拦河坝坝址区地质及水文地质条件的基础上,对宝珠寺水电站坝基排水孔异常逸出物的分布及其化学成分和矿物成分进行了研究,对异常逸出物的工程危害进行了讨论.结果表明,在宝珠寺水电站坝基排水孔中,异常逸出物主要出现在河床坝段,其成分主要是地层岩石中的一些常见元素及常见的成岩矿物,异常逸出物对大坝工程的危害主要体现在其本身及其形成过程中从大坝基础中携带出了大量的物质.     

基于时空特征分析技术的烤烟GIS系统

本文分析了烤烟信息系统对烤烟种植、生产和销售的重要作用,构建系统的必要性和应用需求,并在.NET框架下,利用ArcEngine和ArcSDE,以C/S结构实现该系统。介绍了系统的结构和功能:包括地图服务、烤烟信息查询统计和烤烟地理信息时空分析和决策支持。同时,讨论了实现该系统的关键技术,包括时空数据库、时空序列的烤烟时空事件分析模型、Web服务等。时空数据包括业务数据和行政区数据两类,对于行政区,除了需要记录行政区的生命周期外,还需记录行政区变更事件,通过行政区变更事件表查询行政区撤消、合并等事件后的业务数据,进而实现时空分析。系统的实现对促进烤烟生产信息化有重积极意义。     

A study on the flora of woody plants of Shanxi and the relationship among the flora of Shanxi and some regions, China

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A study on the flora of woody plants of Shanxi and the relationship among the flora of Shanxi and some regions, China

There are 463 species of woody plant, belonging to 166 genera and 70 families in Shanxi, North China. The floristic composition types of genera and species are abundant, in which the compositions distributed in temperate zones (including North Temperate, Old World Temperate and Temperate Asia), having 62 genera, are dominant and account for 38.27% in total genera (except for Cosmopolitan), and they are major constructive or dominant species of vegetation in Shanxi. The floristic compositions of woody plants of Shanxi, Hebei, Beijing, Shandong, Henan, Jiangxi and Inner Mongolia were studied comparatively by using diversity index, principal component analysis (PCA) and group-average clustering, respectively. The floristic composition of Shanxi was considerably similar to that of Hebei, Beijing and Shandong because they shared a lot of genera, specially genera distributed in temperate regions, such as Rosa, Quercus, Populus, Salix, Acer, Ulmus, Pinus etc. and their eco-environment were considerably similar. However, the flora of Shanxi was comparatively different from that of Henan, Jiangxi and Inner Mongolia by reason that there were distinct differences among their eco-geographic conditions, floristic compositions and constructive or dominant species of dominant vegetation types. Supported by Shanxi Returned Oversea Scholar Foundation, China     

莺歌海盆地泥底辟带高温热事件与储层成岩作用

为了探讨莺歌海盆地泥底辟带的高温热事件与储层成岩作用的关系,以泥底辟带的形成、演化特征为切入点,通过薄片、探针、流体组分及包裹体等资料寻找泥底辟带与底辟事件相关热流体活动存在的依据,总结分析了其形成期次,研究了与热流体活动有关的主要成岩作用。研究结果表明,泥底辟带储层中存在高温矿物组合,地层水中的钙、镁离子质量浓度和天然气中的二氧化碳体积分数均高于非泥底辟带;包裹体测试古地温高于现今温度,古地温的分布及其中的流体成分显示热液活动具有期次性;泥底辟带较非泥底辟带,地层水中二氧化碳溶蚀长石、碳酸盐等物质生成的K+、Ca2+和HCO-₃质量浓度高;长石溶孔、粒间溶孔和铸模孔等次生孔隙发育,占总孔隙比例较高,溶蚀作用较强;泥底辟带储层中的碳酸盐岩胶结物体积分数高,胶结作用相对发育;泥底辟带主要存在3期热流体活动,与之有关的影响储层质量的成岩作用主要有溶蚀作用和胶结作用。      

Particle size distributions and organic-inorganic compositions of suspended particulate matters around the Bohai Strait

Laser in situ scattering and transmissometry(LISST) significantly improves our ability to assess particle size distribu-tion(PSD) in seawater, while wide-ranging measurements of the organic-inorganic compositions of suspended particulate matters(SPM) are still difficult by using traditional methods such as microscopy. In this study, PSD properties and SPM compositions around the Bohai Strait(China) were investigated based on the measurements by LISST in combination with hydro-biological parameters collected from a field survey in summer 2014. Four typical PSD shapes were found in the region, namely right-peak, left-peak, dou-ble-peak and negative-skew shapes. The double-peak and negative-skew shapes may interconvert into each other along with strong hydrodynamic variation. In the upper layer of the Bohai Sea, organic particles were in the majority, with inorganic particles rarely observed. In the bottom layer, SPM were the mixture of organic and inorganic matters. LISST provided valuable baseline information on size-resolved organic-inorganic compositions of SPM: the size of organic particles mainly ranged from 4 to 20 μm and 40 to 100 μm, while most SPM ranging from 20 to 40 μm were composed of inorganic sediment.     

Remote Sensing Monitoring of Tobacco Field Based on Phenological Characteristics and Time Series Image ——A Case Study of Chengjiang County, Yunnan Province, China

Using three-phase remote sensing images of China-Brazil Earth Resources Satellite 02B (CBERS02B) and Landsat-5 TM, tobacco field was extracted by the analysis of time series image based on the different phenological characteristics between tobacco and other crops. The spectral characteristics of tobacco and corn in luxuriant growth stage are very similar, which makes them difficult to be distinguished using a single-phase remote sensing image. Field film after tobacco seedlings transplanting can be used as significant sign to identify tobacco. Remote sensing interpretation map based on the fusion image of TM and CBERS02B's High-Resolution (HR) camera image was used as standard reference material to evaluate the classification accuracy of Spectral Angle Mapper (SAM) and Maximum Likelihood Classifier (MLC) for time series image based on full samples test method. SAM has higher classification accuracy and stability than MLC in dealing with time series image. The accuracy and Kappa of tobacco coverage extracted by SAM are 83.4% and 0.692 respectively, which can achieve the accuracy required by tobacco coverage measurement in a large area.     

湛江沿海大黄鱼种群的研究

徐闻和硇州两海区所产的大黄鱼,过去一直认为是同一种群—粤西种群。通过生物学测定,发现在体长组成、年龄组成、体重组成和年渔获量方面,两者有显著的差异,应分为徐闻种群和硇州种群。