微信小程序赋予图书馆内部办公自动化的新可能性及实践重点——以厦门大学为例

在对微信小程序\"核心能力\"分析的基础上,以现实需求为导向,立体对比了三种主要技术路线,阐述了微信小程序在助推图书馆内部办公从\"自动化\"向\"移动化\"全面演进中的无限潜力。通过厦门大学具体实践中的几个应用场景,真实展现小程序在内部管理效率提升方面的优势,不仅是抛砖引玉,更是为了探讨实践中的开发思路和技术难点

注浆成型-常温常压干燥制备隔热块体材料

以二氧化硅气凝胶为基体,二氧化钛为红外遮光剂,E玻纤为骨架制备出有一定压缩强度的隔热块体材料;分别测样品的压缩强度R、热导率λ和常温(25℃)体积电阻率ρ。结果表明:pH=8~9时,含水料浆的分散情况较好;经过730℃处理0.5h的样品,与美国材料与试验协会的标准ASTM C533—85比较,R值0.41MPa符合,密度D=151kg.m-3较低;样品在常温和480℃时,常压下的热导率λn分别为0.036W.m-1.K-1和0.061W.m-1.K-1,低于或远低于一般隔热材料。同时系统研究了以水泥熟料为黏结剂、采用注浆成型-常温常压干燥制备隔热块体材料,原料和样品都无毒,制备工艺简单,成本低,容易实现产业化

Multiple Background Model-Based Moving Target Detection on Sea Surface

提出一种在反射光较强的条件下基于多背景模型的海面运动目标检测方法.使用基于统计模型的变化检测方法将被监控场景区分为海浪波动显著的背景区域和海浪波动不显著的背景区域;对这两种区域中的像素点分别以Weibull分布模型和Gauss分布模型建立背景模型;使用建立的背景模型检测海面的运动目标.实验结果表明,在海面反射光较强且波浪波动较大的情况下,用该方法可以比较准确地检测到海面的运动目标. A new method based on multiple background model for moving target detection on the sea surface is proposed. It can detect the moving target on the sea surface when there is heavy sea clutter and the reflected light is strong. The monitored area is first partitioned into two regions using the statistical model-based change detection method, where the sea clutter in one region is heavier than the other. Then Weibull distribution is used to create the background model for pixels in the region having heavier sea clutter and Gaussian distribution is used for the other region. Finally the background model is used to detect moving target on the sea surface. Experimental results show that the proposed method can detect moving target effectively even when the sea clutter is heavy and the reflected light is strong.国家自然科学基金资助项目(60175008);; 国家创新研究群体项目(60024301

Ships Tracking Based on Active Contour Model

将主动轮廓线模型用于海面运动船只的跟踪,提出了一种自动选择主动轮廓线初始控制点的方法,增强了主动轮廓线模型的实用性,并将基于主动轮廓线模型的跟踪方法用于多个海面运动目标的跟踪。实验结果表明,提出的初始主动轮廓线自动选取方法可以准确地选择目标的轮廓线的特征点;基于主动轮廓线模型的跟踪方法可以比较准确地跟踪运动船只的主要轮廓特征。This paper proposes a method based on active contour model to track the moving object on the sea surface,and a method for selecting the initial control points of the active contour automatically.And it uses the tracking method to track multi-ships moving on the sea surface.Experimental results show that the tracking method based on active contour model can track the ships’ contour effectively,and the method for selecting the initial points is excellent.国家创新研究群体基金资助项目(60024301);; 国家自然科学基金资助项目(60175008

社团文化视角下的图书馆文化建设探究——以厦门大学图书馆为例

社团文化是校园文化建设的重要部分,图书馆是校园文化建设的中心地带。为了推动社团文化、图书馆文化乃至校园文化的整体发展,本文从社团文化视角下对图书馆文化建设展开研究,阐述了社团文化及图书馆文化的基本内涵,提出了将社团文化融入图书馆文化建设的重要意义和基本思路,并介绍了厦门大学图书馆的实践经验

IL-20及其受体在大鼠自身免疫性心肌炎不同阶段的表达

目的探讨IL-20及其受体在大鼠实验性自身免疫性心肌炎(EAM)急慢性期各阶段的表达。方法将提纯精制后的猪心室肌球蛋白加等体积含结核杆菌H37Ra株的完全弗氏佐剂充分混合,于Lewis大鼠双后足皮下注射制作大鼠EAM模型;将15只大鼠按随机数字表法分成3组,每组5只,分别于3、6、12周后处死取心肌组织进行检测。另取5只大鼠注射0.9%氯化钠注射液作为对照组。HE染色评估EAM急慢性期各时点心肌损伤程度;应用实时荧光定量RT-PCR检测IL-20及其受体链(IL-20R1/R2,IL-22R1)在各时点的mRNA表达;应用Western blotting法检测IL-20在各时点的蛋白表达。并以ELISA检测不同时点心肌组织匀浆IL-20蛋白含量[IL-20蛋白/总蛋白(pg/ng)]。结果 IL-20在EAM急性期3周时表达逐渐升高,6周时达峰值,12周时又逐渐减少。IL-20的组织蛋白水平与基因表达相一致。结论 IL-20可能参与大鼠EAM的疾病过程,并且可能在EAM的晚期炎症及慢性心肌纤维化的机制中起重要作用

Dynamics of nutrient and energy for fine roots of Casuarina equisetifolia plantations on coastal sandy soil

2005年1月到2005年11月对福建省惠安县赤湖林场不同林龄木麻黄人工林细根养分和能量的季节动态进行了观测,结果表明:(1)6种元素的含量在不同林龄木麻黄细根中都具有明显的季节变化。各林龄细根的N含量一般在冬夏季节较高,且死细根的N浓度高于相同林龄的活细根,除12林龄活细根P浓度在7月份有最大值外,其他各林龄活、死细根在一年中呈波动性下降,K含量在冬季较高,而在其他季节变化幅度不大,除5林龄活细根和18林龄死细根在3月份和7月份有两个峰值外,其他林龄细根Ca含量随季节变化较小,Mg含量随季节变化总体呈下降趋势,而在11月份上升;各林龄C则呈波浪形变化;(2)随着林龄的增大,细根N、P、Mg含量的变化模式相似,都呈先增加,后降低,再增加的趋势,K和Ca含量变化趋势相似,但变动幅度存在差别,C则呈波浪形变化;(3)随着季节的变化,灰分、干重热值和去灰分热值呈"V"形变动,一年中都存在两个峰值,分别在3月份和7月份或9月份;(4)灰分、干重热值和去灰分热值随林龄的增大表现为波浪形增加。由此可见,不同森林类型的细根养分和能量动态具有季节和林龄的特殊性,在进行整个地区森林生态系统物质循环和能量流动研究时,应考虑不同森林类型的特性。The seasonal dynamics of nutrient and energy of fine roots in C.equisetifolia plantations of different ages was studied at Chihu forestry farm of Hui'an county,Fujian province from January to November in 2005.We obtained the following results:(1)There was significant seasonal dynamics of six elements in the fine roots of different aged C.equisetifolia plantations.N concentration of dead fine roots was higher than that of living fine roots,and was relatively higher in summer and winter.P concentration of fine roots fluctuated with a decreasing trend except for the living fine roots of 12 year-old plantation.K concentration was higher in winter than in the other seasons.The highest Ca concentration in March and July was found in living fine roots of 5 year-old plantation and dead fine roots of 18 year-old plantation,while Ca concentration remained little change for other aged plantations.Mg concentration decreased from January to September and then increased in November.C content fluctuated with time.(2)The similar trend was found for N,P and Mg;and for K and Ca,respectively;C concentration fluctuated with plantation age.(3)The ash content,gross caloric values and ash free caloric values changed with "V" type,and were relatively high in March and July or September,respectively.(4)The ash content,gross caloric values and ash free caloric values tended to increase with the increasing plantation age.It was concluded that the nutrient and energy dynamics of fine roots varied with seasons and plantation ages.To discuss matter cycling and energy flow of forest ecosystems,we should pay attention to these characteristics of different stands.国家“十一五”科技支撑计划资助项目(2006BAB03A14-01);; 福建省科技重大资助项目(2006NZ001-2);; 国家林业局南方山地用材林培育重点实验室资助项目~

Production,decomposition and turnover of fine roots in Casuarina equisetifolia plantation

在福建省惠安县赤湖林场用根钻法和分解袋法对18年生木麻黄人工林细根生物量、分解及周转进行了研究。结果表明,18年生木麻黄活细根生物量平均为6.693 t.hm-2,死细根平均为2.292 t.hm-2,细根生物量具有明显的季节动态,活细根和死细根生物量年变化均为双峰型,活细根生物量峰值出现在1月和7月,死细根出现在3月和7月。用试验期间不同时间数据拟合得到木麻黄细根分解回归方程:x/x0=1.06e-0.0014t。应用模拟方程计算出木麻黄分解1年的干重损失率理论值(35.96%)与实测值(38.19%)较为接近。木麻黄细根半分解时间为537 d,95%分解时间为2 181 d。结合木麻黄人工林在不同季节的细根生物现存量,18年林龄木麻黄细根年死亡量分别为1.825 t.hm-2,年生长量为3.173 t.hm-2,年周转0.474次。The sequential root coring and litter bag technique were used to study fine root biomass,decomposition and turnover in an 18-year-old Casuarina equisetifolia plantation,from Chihu Forestry Farm of Hui'an County.Results show that the average live fine root biomass is 6.693 t·hm-2 and that of dead fine root is 2.292 t·hm-2.Annual dynamic curves of both live and dead fine roots have double apices.Curve peaks of live fine root biomass occur in Jan.and July,while that for dead fine root occur in March and July.The regression equation,based on dry matter decomposition data gained during different experimental periods is:x/x0=1.06e-0.0014t.Theoretic annual dry-weight loss rate of 35.96% calculated from the equation is close to the metrical value of 38.19%.It takes 537 days and 2 181 days to respectively decompose 50% and 95% of the fine roots.Annual mortality of fine roots in the 18-year-old plantation is 1.825 t·hm-2 and annual productivity is 3.173 t·hm-2,with an annual turnover rate of 0.474.国家“十一五”科技支撑计划项目(2006BAB03A14-01);; 福建省科技重大项目(2006NZ0001-2);; 国家林业局南方山地用材林培育重点实验室项目资

Fine Root Biomass and Dynamics of Casuarina equisetifolia Plantations on Coastal Sandy Soil

2005年1月到11月对福建省惠安县赤湖林场不同林龄木麻黄人工林细根的生物量及其动态特征进行了研究.结果表明,24a生木麻黄林细根生物量分别占其地下部分生物量和林分总生物量的53.1%和3.8%;活细根的生物量随林龄的增大而逐渐增加,至30a林龄时达到最大值12.373thm-2,而后逐渐下降,死细根的生物量则呈现一直增大的趋势,木麻黄人工林细根的生物量与林分地上部分的生长具有显著的相关关系;细根生物量具有明显的季节动态,各林龄无论活细根还是死细根都表现为双峰型,3a生和18a生的活细根出现在1月和7月,而12a生出现在3月和7月,对于死细根,12a生和18a生的两个峰值出现在3月和7月,5a生则出现在7月和11月.各林龄木麻黄防护林活、死细根密度垂直分布呈单峰型,最大值出现在表层的0~10cm土层中,后随土层厚度增加逐渐减少,其中5a林龄细根生物量随土层深度增加而减少表现最为明显.在0~10cm土层中的活、死细根生物量分别占全部活细根生物量的51.9%和死细根生物量的53.3%,活细根生物量的84.6%和死细根生物量的82.8%分布在0~30cm的土层中.以后随着林龄的增加,表层土壤中细根生物量的比重降低而深层的比重增加.图3表2参31Fine root biomass and its dynamic characteristics of different aged Casuarina equisetifolia plantations on coastal sandy soil were studied in the Chifu Forestry Farm of Huian County, Fujian. The results showed that the fine roots of 24-year-old plantation accounted for 53.1% of the total underground biomass and 3.8% of the total amount of plantation, respectively; the standing crop of living fine roots increased as the forest aging until its maximum reached 12.373 t hm-2 at 30-year-old, then decreased gradually, while the biomass of dead fine roots increased all along as the forest aging. The fine roots biomass had remarkable correlation with the growth of the above-ground. The fine roots biomass was found with remarkable seasonal dynamics that the standing crop of living and dead fine roots of different aged plantations both were shown with double peaks, while the maximum occurred in different seasons for different aged plantations. The maximum of living fine roots of 5-and 18-year-old plantations occurred separately in January and July, while those of 12-year in March and July. As to the dead fine roots, those of 12-and 18-year occurred in March and July, and 5-year in July and November. The vertical distribution of living and dead fine roots at soil depth was shown with single peak for C. equisetifolia plantations, being concentrated at 0~10 cm, and then decreased with depth gradually. This trend was obvious for 5-year-old plantation. The biomasses of living and dead fine roots at 0~10 cm accounted for 51.9% and 53.3% of the totals, respectively. The 84.6% of living and 82.8% of dead fine roots concentrated at the depth of 0~30 cm. The proportion of fine roots decreased in topsoil and increased in deep soil along with aging of the forest. Fig 3, Tab 2, Ref 31国家“十五”科技攻关项目(No.2004BA516A15-13);; 国家林业局南方山地用材林培育重点实验室资助项目~

An ecological study on zooplankton in the northern Beibu Gulf V: the effects of microzooplankton grazing on phytoplankton in summer

2011年8月份于北部湾北部海域5个观测站位获得的分层水样,分析了表层叶绿素A含量和表层微型浮游动物丰度以及类群组成;同时于现场采用稀释培养法研究了该海域浮游植物生长率(μ)和微型浮游动物的摄食率(g)。分析和测定结果表明:调查海区的微型浮游动物丰度400—1167个/l,类群组成以无壳纤毛虫为主;浮游植物的生长率为-1.50—1.13 d-1,微型浮游动物摄食率为0.33—1.08 d-1;推算微型浮游动物对浮游植物现存量以及初级生产力的摄食压力分别为28.1%—66.0%和-7.4%—438.4%。相对于中国其他海区,8月份北部湾北部海域微型浮游动物摄食速率处于中等水平。调查期间,广西沿海高生产力海区,浮游植物生长率大于微型浮游动物动物的摄食率,浮游植物生物量处于积累期;涠洲岛以南海域,浮游植物生产力较低,微型浮游动物摄食作用是控制浮游植物生长的重要因素。In August 2011,we quantified the impact of microzooplankton grazing on phytoplankton production in the surface waters of the northern Beibu Gulf,Vietnam.Shipboard dilution incubation experiments were carried out at five stations to calculate phytoplankton specific growth rates and the specific rates of grazing losses to microzooplankton.Dilution experiments using chlorophyll a( Chl a) as a tracer were used to estimate daily rates in two size fractions; image-analyzed microscopy provided quantitative estimates of microzooplankton standing stock( including ciliate and vertebrate larvae).PFW( particle-free water) was used to dilute seawater to five target dilutions of 0%,20%,40%,60%,and 80%.Microzooplankton grazing and phytoplankton growth rates were estimated by the linear regression of AGR( apparent growth rate) versus dilution factor.We estimated the grazing impact of microzooplankton on phytoplankton by calculating the percentage of phytoplankton standing stock and potential primary production ingested.Average total chlorophyll a concentration was( 0.67 ± 0.58) μg / L.Small-celled phytoplankton dominated this particular community.A notable characteristic of the phytoplankton community structure was that nano- and picoplankton made up a significant portion.Aloricate ciliates dominated the microzooplankton samples,in particular Strombidium,which accounted for 27.2% of total aloricate ciliate abundance.In addition,loricate ciliates and copepod nauplii were recorded.Microzooplankton densityvaried from 400 to 1167 ind / L.The horizontal distribution of microzooplankton was greater in nearshore than in offshore waters.Abundance did not differ significantly with chlorophyll a concentration in this study; however,there was a positive correlation between microzooplankton abundance and temperature.The phytoplankton growth rate( < 200 μm) ranged between-1.50 and 1.13 d-1,with the highest values being associated with nearshore waters.Meanwhile phytoplankton mortality due to microzooplankton grazing( 0.33—1.08 d-1) was highest at the same nearshore sites; however,growth rates were low at these sites.Consequently,microzooplankton consumed 28.1%—66.0% of chlorophyll a standing stocks and-8.1%—438.4% of the primary production per day.However,the grazing rate of microzooplankton on nanoplankton( 2— 20 μm) varied from 1.87 to 0.52 d-1,with an average of( 0.94±0.57) d-1.Given that the rates of grazing on phytoplankton of <200 μm were lower than those on nanoplankton,we conclude that microzooplankton prefer to graze on nanoplankton.There was a positive correlation between phytoplankton growth rate and grazing rate; in addition,significant differences between grazing rate and chlorophyll a were found.This suggests that microzooplankton grazing activity is the main factor regulating the community structure and restraining the growth of phytoplankton.During the investigation period, microzooplankton grazing effectively controlled the growth of phytoplankton,consuming 176.2% of primary production on average.When grazing rates are far greater than phytoplankton growth rates,energy is transferred from lower to higher trophic levels more effectively.In the surface waters of the northern Beibu Gulf,microzooplankton largely control the growth of phytoplankton by grazing offshore rather than in nearshore waters where primary production is high.The growth and grazing rates combined promote planktonic ecosystem stability in this area.These results indicate that grazing by microzooplankton is a key process controlling the growth of phytoplankton in this area.海湾公益项目(201005012