畜禽废弃物集运车自动监控回报地理信息系统之开发   总被引：1，自引：0，他引：1  

施明伦  游保杉  许峻榕  陈继藩  林柏仁 《遥感学报》2006,10(4):608-614

本研究能藉由装置于畜禽废弃物集运车之重量感测系统（Weighing System，WS）及全球卫星定位系统（Global Positioning System，GPS），经由全球行动无线通讯系统（Global System for Mobile Communication，GSM）全天候将集运车上畜禽废弃物载重变化及其位置，实时传回监控中心之地理信息系统（Geographic Information System，Gis）与数据库服务器中，再利用网络地图服务器经因特网（Intemet）随时提供客户端上网浏览查询与监控集运车可能不当流用之行为。本系统着重以重量变化信息作为监控端参考的重要依据，再配合车辆定位信息以核对畜禽废弃物卸载地点与重量而掌控不当流用之明确证据。另考虑集运车司机可能利用下班时间进行违法行为，监控人员无法全天侯监控，本研究系统增加集运车于非上班时间发生异常状况时，以简讯（Short Message）及电子邮件（E-mail）型式传送至预设监控者手机或远程计算机内或在提供监控者于下班时间直接透过因特网浏览器监控之功能，以及藉由远程操控软件（Symantec PC Anywhere）透过远程计算机进入监控中心做不定时的查询监视。另外，本系统透过手持式输入设备，将清运司机所输入毙死畜禽数量信息传送到GSM／GPRS（General Packet Radio Service）模块，并发送回监控端，其监控人员可透过因特网浏览接口，了解集运车辆实时清运数量、重量与路线位置之关系，以确实达到集运车辆控管之目的。  相似文献   

In, Sn, Pb and Zn Contents and Their Relationships in Ore-forming Fluids from Some In-rich and In-poor Deposits in China   总被引：2，自引：0，他引：2       下载免费PDF全文

ZHANG Qian ZHU Xiaoqing HE Yuliang ZHU Zhaohui 《《地质学报》英文版》2007,81(3):450-462

All the indium-rich deposits with indium contents in ores more than 100×10- 6 seems to be of cassiterite-sulfide deposits or Sn-bearing Pb-Zn deposits, e.g., in the Dachang Sn deposit in Guangxi, the Dulong Sn-Zn deposit in Yunnan, and the Meng'entaolegai Ag-Pb-Zn deposit in Inner Mongolia, the indium contents in ores range from 98×10-6 to 236×10-6 and show a good positive correlation with contents of zinc and tin, and their correlation coefficients are 0.8781 and 0.7430, respectively. The indium contents from such Sn-poor deposits as the Fozichong Pb-Zn deposit in Guangxi and the Huanren Pb-Zn deposit in Liaoning are generally lower than 10×10-6, i.e., whether tin is present or not in a deposit implies the enrichment extent of indium in ores. Whether the In enrichment itself in the ore -forming fluids or the ore-forming conditions has actually caused the enrichment/depletion of indium in the deposits? After studying the fluid inclusions in quartz crystallized at the main stage of mineralization of several In-rich and In-poor deposits in China, this paper analyzed the contents and studied the variation trend of In, Sn, Pb and Zn in the ore-forming fluids. The results show that the contents of lead and zinc in the ore-forming fluids of In-rich and -poor deposits are at the same level, and the lead contents range from 22×10-6 to 81×10-6 and zinc from 164×10-6 to 309×10-6, while the contents of indium and tin in the ore-forming fluids of In-rich deposits are far higher than those of In-poor deposits, with a difference of 1-2 orders of magnitude. Indium and tin contents in ore-forming fluid of In-rich deposits are 1.9×10-6-4.1×10-6 and 7×100-6-55×10-6, and there is a very good positive correlation between the two elements, with a correlation coefficient of 0.9552. Indium and tin contents in ore-forming fluid of In-poor deposits are 0.03×10-6-0.09×10-6 and 0.4×10-6--2.0×10-6, respectively, and there is no apparent correlation between them. This indicates, on one hand, that In-rich ore-forming fluids are the material basis for the formation of In-rich deposits, and, on the other hand, tin probably played a very important role in the transport and enrichment of indium.  相似文献   

Analysis of nanomolar concentrations of phosphate in seawater with Liquid Waveguide after Mg （OH）2 coprecipitation     

Laimin ZHU Yihua CAI 《中国地球化学学报》2006,25(B08):195-196

Phosphorous is an essential nutrient used by plants and animals for growth and energy transport. Phosphate cycling studies are important in understanding biological processes, and phosphate analyses are a standard part of the biogeochemists＇ toolbox. However, these standard techniques fail to be applied to low concentration environments due to a lack of sensitivity. Such low concentration environments include the central gyres such as the North Pacific and North Atlantic subtropical gyres and northeastern Mediterranean gyres where phosphate concentrations average less than 50 nM. In this study, a method was developed to analyze DIP using Liquid Waveguide after Mg （OH）2 coprecipitation. This method uses magnesium （Mg） in seawater sample as a carrier to coprecipitate phosphate. This method has a very low reagent blank because only sodium （Na） hydroxide and 1% HCl are used and these reagents can be easily purified. The simplicity of this method also minimizes the potential for phosphate contamination during sample handling. The aim of this study is to develop a technique for analysis of phosphate in seawater, which is simple, accurate and precise. We used Liquid Waveguide to guarantee accuracy and detect phosphate at levels comparable to the lowest seen in seawater.  相似文献   

氢氟酸挥发重量法测定石英岩中二氧化硅的准确度   总被引：1，自引：0，他引：1  

王晓荃  曹中烈 《地质实验室》1996,12(2):91-91

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有关“盐度”单位的正确使用     

刘雅琴蒋函  苏亚志 《吉林大学学报(地球科学版)》2005,35(4):455-455

“盐度”一词在矿床地质、水文地质的科技论文中经常出现。在编辑的过程中发现作者对“盐度”单位的使用不太统一，与国家标准也不相符。在教科书中，盐度的单位一般书写成wt％NaCl形式，很多期刊中也这样表达。这种表达方法显然不够规范，因为“重量百分比”（wt％）早已被废弃，已被质量分数取代。许多期刊也力求对盐度单位书写规范化、标准化。但是目前，对盐度单位的书写仍是五花八门，主要归纳如下。  相似文献   

Labrador地槽中部地区退变质期间铜再活化的流体包裹体证据     

Hayn.  FM 沈建忠 《国外矿床地质》1991,(3):15-32

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半工业工艺样品重量的最佳化     

邱郁 《国土资源信息化》1989,(16):16-18

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四苯硼化铷重量法测定铷   总被引：5，自引：2，他引：3       下载免费PDF全文

郑大中  郑若锋 《盐湖研究》2000,8(3):1-5

研究了用四苯硼化钠在水溶液中沉淀铷的影响因素 ,如沉淀剂用量、溶液体积、p H值、温度和不同含量的锂、钠氯化物以及硫酸盐。提出了重量法测定铷的条件和步骤。本法可适用于铷盐混合溶剂体系中溶度的研究。  相似文献   

气候变化背景下麦田沟金针虫爆发性发生为害          下载免费PDF全文

任三学  赵花荣  齐月  田晓丽  杨超  胡丽丽 《应用气象学报》2020,31(5):620-630

近年华北地区大面积推行保护性耕作措施和作物秸秆粉碎还田,冬小麦与夏玉米一年两熟连续轮作种植,为沟金针虫创造了有利的取食和栖息环境。地处华北北部的中国气象局固城农业气象野外科学试验基地2018—2019年秋季、冬季、春季气温出现了冷暖交替,尤其最低气温显著偏高,诱发麦田沟金针虫爆发性发生为害。据春季麦田挖土调查,虫口密度最高达144头·m-2,虫口重量最重达18.764 g·m-2。58个调查点达防治指标5头·m-2占98.27%。拔节-收获期调查虫口密度孕穗期最高,拔节期次之,收获期最低。冬小麦与夏玉米禾本科作物连作种植田间虫口密度达35.3~40.4头·m-2,显著高于前茬大豆、玉米、冬小麦休闲地,且花生地、春玉米地比大豆地虫口密度高5倍多,虫口重量高10倍以上。成熟期虫害麦田测产,籽粒减产36.8%;虫口密度增加10头·m-2,籽粒减产率增加4.824%;虫口重量增加1 g·m-2,籽粒减产率增加3.871%;植株虫害率增加10%,籽粒减产率增加11.587%。  相似文献   

Non-uniform sediment incipient velocity   总被引：5，自引：3，他引：2  

Haitao XU  Jinyou LU  and Xiaobin LIU Master  Yangtze River Scientific Research Insitute  Wuhan  China. Prof.  Yangtze River Scientific Research Insitute  Wuhan  China 《国际泥沙研究》2008,23(1):69-75

Based on the mechanism of non-uniform sediment incipient motion, the dragging force and uplift force coefficient expressions are put forward for the non-uniform bed material exposure and close alignment state. The incipient velocity formula of the non-uniform sediment is then established. It is shown that the formula structure is reasonable, and fine particles of the non-uniform sediment are more difficult to set into motion than the same sized uniform particles, whereas coarser particles are easier to set into motion than their uniform equivalents. The validity of the formula is verified by field and experiment data.  相似文献