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谷物干燥水分监测技术探析

农机使用与维修 2023年第4期 18-20页

作者：陈武东李喜陆苏东鹤马文军赵宇李蒙于占海黑龙江省农业机械工程科学研究院佳木斯分院黑龙江佳木斯154004

谷物干燥水分在线测量是保证谷物干燥效率的重要技术之一,可以根据谷物干燥水分变化及时进行参数调整。以影响谷物水分变化的主要因素为切入点,系统论述了谷物水分测量方式与主要内容,研究结果以其为设计出一种检测精度高、测量功能齐... 详细信息

谷物干燥水分在线测量是保证谷物干燥效率的重要技术之一,可以根据谷物干燥水分变化及时进行参数调整。以影响谷物水分变化的主要因素为切入点,系统论述了谷物水分测量方式与主要内容,研究结果以其为设计出一种检测精度高、测量功能齐全的谷物干燥在线水分检测系统提供参考依据。

关键词：谷物干燥水分变化测量方式影响因素

维普期刊数据库博看期刊

Sensitivity and nonlinearity of Eurasian winter temperature response to recent Arctic sea ice loss

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Acta Oceanologica Sinica 2017年第8期36卷 52-58页

作者： SUI Cuijuan ZHANG zhanhai yu Lejiang LI Yi SONG Mirong College of Physical and Environmental Oceanography Ocean University of ChinaQingdao 266100China National Marine Environmental Forecasting Center Beijing 100081China Polar Research Institute of China Shanghai 200129China Institute of Atmospheric Physics Chinese Academy of SciencesBeijing 100029China

The recent decline in the Arctic sea ice has coincided with more cold winters in Eurasia. It has been hypothesized that the Arctic sea ice loss is causing more mid-latitude cold extremes and cold winters, yet there is lack of consensus in modeling studies on the impact of Arctic sea ice loss. Here we conducted modeling experiments with Community Atmosphere Model Version 5 （CAM5） to investigate the sensitivity and linearity of Eurasian winter temperature response to the Atlantic sector and Pacific sector of the Arctic sea ice loss. Our experiments indicate that the Arctic sea ice reduction can significantly affect the atmospheric circulation by strengthening the Siberian High, exciting the stationary Rossby wave train, and weakening the polar jet stream, which in turn induce the cooling in Eurasia. The temperature decreases by more than I^C in response to the ice loss in the Atlantic sector and the cooling is less and more shifts southward in response to the ice loss in the Pacific sector. More interestingly, sea ice loss in the Atlantic and Pacific sectors together barely induces cold temperatures in Eurasia, suggesting the nonlinearity of the atmospheric response to the Arctic sea ice loss.

关键词： cold winter CAM5 sensitivity experiment jet stream

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苏里格气田河流相储层预测

重庆科技学院学报（自然科学版） 2018年第3期20卷 7-9,20页

作者：韩兴刚李娜李小锋于占海许珍萍罗建宁长庆油田分公司苏里格气田研究中心西安710018 低渗透油气田勘探开发国家工程实验室西安710018 北京师范大学地理科学学部资源学院北京100875

结合苏里格气田苏6区块测井及高精度三维地震资料,综合运用精细地震构造解释、地震属性和储层反演等技术手段,开展河流相储层预测研究。研究结果表明:振幅类属性对于苏6区块砂体比较敏感,如均方根振幅属性;复地震道属性对于该区河流相... 详细信息

结合苏里格气田苏6区块测井及高精度三维地震资料,综合运用精细地震构造解释、地震属性和储层反演等技术手段,开展河流相储层预测研究。研究结果表明:振幅类属性对于苏6区块砂体比较敏感,如均方根振幅属性;复地震道属性对于该区河流相预测较为敏感,如瞬时相位属性。地球物理反演结果表明,研究区盒八下段为砂体主要分布层段,有效砂体发育广泛,可作为有利储层。

关键词：储层预测苏里格气田多地震属性河流相储层反演

Investigation of Arctic air temperature extremes at north of 60°N in winter

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Acta Oceanologica Sinica 2017年第11期36卷 51-60页

作者： SUI Cuijuan ZHANG zhanhai yu Lejiang LI Yi SONG Mirong College of Physical and Environmental Oceanography Ocean University of China Qingdao 266100 China National Marine Environmental Forecasting Center State Oceanic Administration Beijing 100081 China Polar Research Institute of China Shanghai 200129 China Key Laboratory for Polar Science Polar Research Institute of China State Oceanic Administration Shanghai 200136 China Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100029 China

Air temperature is a key index reflecting climate change. Air temperature extremes are very important because they strongly influence the natural environment and societal activities. The Arctic air temperature extremes north of 60°N are investigated in the winter. Daily data from 238 stations at north of 60°N from the global summary of the day for the period 1979–2015 are used to study the trends of cold days, cold nights, warm days and warm nights during the wintertime. The results show a decreasing trend of cold days and nights（rate of –0.2 to –0.3 d/a） and an increasing trend of warm days and nights（rate of ＋0.2 to ＋0.3 d/a） in the Arctic. The mean temperature increases,which contributes to the increasing（decreasing） occurrence of warm（cold） days and nights. On the other hand,the variance at most stations decreased, leading to a reduced number of cold events. A positive AO（Arctic Oscillation） index leads to an increased（decreased） number of warm（cold） days and nights over northern Europe and western Russia and an increased（decreased） number of cold（warm） days and nights over the Bering Strait and Greenland. The lower extent of Arctic autumn sea ice leads to a decreased number of cold days and *** occurrences of abrupt changes are detected using the Mann-Kendall method for cold nights occurring in Canada in 1998 and for warm nights occurring in northwestern Eurasia in 1988. This abrupt change mainly resulted from the mean warming induced by south winds and an increased North Atlantic sea surface temperature.

关键词： extreme temperature events trend analysis abrupt change analysis composite analysis

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玉米种子脱粒清选装置的研究

农机使用与维修 2023年第7期 19-22页

作者：田新庆于占海马文军任嘉宇侯艳芳黑龙江省农业机械工程科学研究院佳木斯分院黑龙江佳木斯154004

种子清选装置作为谷物脱粒机的重要工作部件,其种子清选性能直接影响整机工作效率及后续谷物存储、运输、销售及播种作业环节。以玉米种子清选为研究对象,基于国内外种子清选装置的发展现状,设计一种气流清选装置,利用Design-Expert数... 详细信息

种子清选装置作为谷物脱粒机的重要工作部件,其种子清选性能直接影响整机工作效率及后续谷物存储、运输、销售及播种作业环节。以玉米种子清选为研究对象,基于国内外种子清选装置的发展现状,设计一种气流清选装置,利用Design-Expert数据分析软件建立影响因素与评价指标间的回归模型,选取曲柄半径、曲柄转速和风机转速为试验因素,以玉米种子清选损失率为评价指标开展正交试验,明确最优工作参数。研究结果表明,玉米种子脱粒机最佳工作参数组合为:曲柄半径为10 mm,曲柄转速为300 r/min,风机转速为2000 r/min。

关键词：玉米种子脱粒机清选装置正交试验

维普期刊数据库博看期刊

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种植体周囊肿的系统性文献综述

中国口腔种植学杂志 2022年第3期27卷 181-187页

作者：龚佳明赵瑞敏王佳戴志明余占海殷丽华兰州大学口腔医学院(口腔医院)口腔种植科 730000 解放军联勤保障部队第940医院兰州730050

Kochaji在2017年介绍两例在种植体植入后因手术创伤、感染因素造成种植体周发生囊肿的病例,并将其命名为种植体周囊肿(peri-implant cyst)。由于种植体周囊肿罕见且造成种植体周支持骨丧失,临床上常与种植体周炎(peri-implantitis)、逆... 详细信息

Kochaji在2017年介绍两例在种植体植入后因手术创伤、感染因素造成种植体周发生囊肿的病例,并将其命名为种植体周囊肿(peri-implant cyst)。由于种植体周囊肿罕见且造成种植体周支持骨丧失,临床上常与种植体周炎(peri-implantitis)、逆行性种植体周炎(retrograde peri-implantitis)相混淆。因此,本文通过系统回顾种植体周囊肿的文献,就其临床表现、鉴别诊断及治疗方式等做一综述。

关键词：囊肿种植体周病牙种植体种植体周炎逆行性种植体周炎

Implementation and application of a nested numerical storm surge forecast model in the East China Sea

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Acta Oceanologica Sinica 2002年第1期21卷 19-31页

作者： yu Fujiang(于福江) Zhang zhanhai(张占海) National Marine Environment Forecasting Center Beijing 100081 China National Marine Environment Forecasting Center Beijing 100081 China

A nested numerical storm surge forecast model for the East China Sea is developed. Aone-way relaxing nest method is used to exchange the information between coarse grid and fine grid. In the inner boundary of the fine grid model a transition area is set up to relax the forecast variables. This ensures that the forecast variables of the coarse model may transit to those of fine grid gradually, which enhances the model stability. By using this model, a number of hindcasts and forecast are performed for six severe storm surges caused by tropical cyclones in the East China Sea. The results show good agreement with the observations.

关键词： Storm surge numerical forecast

高炉灰中SiO_2、CaO、MgO含量的测定

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价值工程 2010年第7期29卷 132-132页

作者：于战海河北钢铁集团宣钢公司炼铁厂技能科宣化075100

本文简要介绍高炉灰中Si02,CaO,MgO的测定,此方法其准确性、重现性、稳定性均可满足日常分析的需求。

关键词：灼烧指示剂溶液测定

实验性大鼠RAU形成及血清EGF表达水平研究

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亚太传统医药 2010年第8期6卷 6-8页

作者：祁晶刘燕薄磊陈光张轩张菊梅余占海兰州大学口腔医学院甘肃兰州730000

目的:利用实验性大鼠口腔黏膜组织匀浆+弗氏佐剂注射法,建立RAU动物模型,研究其血清EGF表达的变化。方法:提取大鼠的口腔黏膜组织匀浆+弗氏佐剂,制成抗原免疫大鼠,并做组织病理学检测和血清EGF含量ELASA法检测。结果:用此免疫方法造模... 详细信息

目的:利用实验性大鼠口腔黏膜组织匀浆+弗氏佐剂注射法,建立RAU动物模型,研究其血清EGF表达的变化。方法:提取大鼠的口腔黏膜组织匀浆+弗氏佐剂,制成抗原免疫大鼠,并做组织病理学检测和血清EGF含量ELASA法检测。结果:用此免疫方法造模的大鼠都发生了RAU,造模过程中相应血清EGF也发生变化。结论:利用大鼠口腔黏膜组织均浆作为抗原,可引起大鼠RAU的发生。大鼠造模后血清EGF表达显著减少。

关键词： RAU 动物模型 EGF