科创中国

结合某地铁保护区隧道结构变形安全监测实例,论述了自动化远程监测系统在地铁保护区隧道结构变形监测中的应用,通过该系统实现了运营期隧道结构多指标变形信息获取的全天候、实时化、自动化,并结合人工监测数据进行了对比分析.结果表明,该自动化远程监测系统所获数据具有较高的精度,能够满足地铁保护区监测多指标自动化监测需求,具有良好的应用前景和推广价值.

6月16日,斯巴鲁汽车(中国)有限公司与国家林业局下属中国野生动物保护协会联合举办的"2012年斯巴鲁生态环保之旅"圆满结束.在本次活动中,由斯巴鲁汽车(中国)有限公司工作人员、国家林业局野生动物保护协会工作人员、多家媒体人员以及斯巴鲁车主组成的考察团完成了对江苏大丰麋鹿国家级自然保护区的探访.

Recursion?by?herbivores?is?the?repeated?use?of?the?same?site?or?plants.?Recursion?by?wild?animals?is?rarely?investigated?but?may?be?ubiquitous.?Optimal?foraging?theory?predicts?site?recursion?as?a?function?of?the?quality?of?the?site,?extent?of?its?last?use,?and?time?since?its?last?use?because?these?influence?site?resource?status?and?recovery.?We?used?GPS?collars,?behaviour?and?site?sampling?to?investigate?recursion?to?foraging?sites?for?two?elephant?Elephas?maximus?borneensis?herds?in?the?Lower?Kinabatangan?Wildlife?Sanctuary,?Borneo,?over?a?12?month?period.?Recursion?occurred?to?48?out?of?87?foraging?sites?and?was?most?common?within?48?hours?or?between?151-250?days,?indicating?two?different?types?ofrecursion.?Recursion?was?more?likely?to?occur?if?the?site?had?previously?been?occupied?for?longer.?Moreover,?the?time?spent?at?a?site?at?recursion?was?the?same?as?the?time?spent?at?the?site?on?the?first?occasion.?The?number?of?days?that?had?passed?between?the?first?visit?and?recursion?was?also?positively?correlated?with?how?much?time?was?spent?at?the?site?at?recursion.?Habitat?type?also?influenced?the?intensity?of?site-use,?with?more?time?spent?at?recursion?within?riverine/open?grass?areas?along?forest?margins?compared?to?other?habitat?types.?Recursion?is?a?common?behaviour?used?by?the?elephants?and?its?pattern?suggests?it?may?be?a?foraging?strategy?for?revisiting?areas?of?greater?value.?The?qualities?of?recursion?sites?might?usefully?be?incorporated?into?landscape?management?strategies?for?elephant?conservation?in?the?area?[Current?Zoology?60?(4):?551-559,?2014].

阿尔金山国家级自然保护区是中国四大无人区之一,保留了最完整、原始的高原生态类型,有雪山沙漠的纯净美景和许多珍稀野生动物,具有很高的科学考察和探险旅游价值.今年"五一"期间,原本计划尝试徒步穿越这片无人区的"中国徒步第-人'雷殿生,却机缘巧合地成就了一段自驾之旅.

Migrating landbirds are known to follow coast lines and concentrate on peninsulas prior to crossing water bodies, es- pecially during daylight but also at night, creating enhanced potential collision hazards with man-made objects. Knowing where these avian migration "hot-spots" occur in time and space is vital to improve flight safety and inform the spatial planning process (e.g. environmental assessments for offshore windfarms). We developed a simple spatial model to identify avian migration hot- spots in coastal areas based on prevailing migration orientation and coastline features known, from visual and radar observations, to concentrate migrating landbirds around land masses. Regional scale model validation was achieved by combining nocturnal passerine movement data gathered from two tier radar coverage (long-range dual-polarization Doppler weather radar and short- range marine surveillance radar) and standardised bird ringing. Applied on a national scale, the model correctly identified the ten most important Danish coastal hot-spots for spring migrants and predicted the relative numbers of birds that concentrated at each site. These bird numbers corresponded well with historical observational data. Here, we provide a potential framework for the es- tablishment of the first three-dimensional avian airspace sanctuaries, which could contribute to more effective conservation of long-distance migratory birds [Current Zoology 60 (5): 680-691, 2014].

通过四川栗子坪自然保护区熊猫监测站项目的建筑材料以及系统的选择,基础、外围护和屋顶等组件构造设计以及现场施工组织,讨论了一种尊重建造约束的设计方式,从中获得设计启发的可能,以及集成设计方法对建成物建构品质的影响.

采用混合溶剂提取、N,O-双(三甲硅醚)-三氟乙酰胺(BSTFA)衍生化预处理和 GC/MS 分析技术,对四川攀枝花苏铁国家自然保护区PM2.5中的大气二次有机气溶胶进行了定量检测,探讨了研究区域内气溶胶中异戊二烯、α-/β-蒎烯光氧化产物、β-石竹酸及小分子羧酸和的浓度水平与变化规律,并讨论了有机物占有机碳(OC)的比值。结果表明,24 h PM2.5中,异戊二烯光氧化产物、α-/β-蒎烯光氧化产物和β-石竹酸的平均浓度分别为51.2、16.1和1.7 ng/m3;苹果酸和2-羟基戊二酸的平均浓度分别为12.4 ng/m3和4.9 ng/m3。OC和元素碳(EC)的平均浓度分别为20.3μg/m3和5.9μg/m3。异戊二烯氧化产物、α-/β-蒎烯氧化产物及β-石竹烯氧化产物对OC的贡献率分别为1.63%、0.34%和0.36%。

非物质文化遗产已纳入中小学课程.学生了解了京剧脸谱知识,对同仁堂的药、全聚德的烤鸭也不再陌生,但对其中蕴含的非物质文化的内涵和魅力,以及其中的科学技术知识、新科技的运用缺乏认识.前门外大栅栏是北京老字号高密度聚集区,也是北京25片历史文化保护区之一.以这些老字号为载体和窗口,让学生用自己的眼睛、耳朵、

介绍西安地铁2号线车辆停放制动施加/缓解时的机械动作及控制原理,通过分析停放制动缸的内部结构,阐述2号线车辆停放制动的特点及施加/缓解的必要条件.最后对2号线车辆在联调时2次发生带停放制动走车的事故进行深层次分析,并对所存在问题制定出的几种整改方案进行探讨.

2012年7月18日,北京地铁隆重举行7号线工程电动客车及牵引系统采购项目签约仪式.株洲南车时代电气股份有限公司与北京地铁7号线业主正式签约,也正式宣告株洲时代电气的自主牵引系统在一线地铁城市中心城区新建线路上实现了首单突破.这对株洲时代电气在城市轨道交通市场的深入推进具有重