Results 11 to 20 of about 9,636 (141)
全膝关节置换术后患膝皮温、C反应蛋白和红细胞沉降率变化规律及相关性分析
目的 分析无并发症全膝关节置换术患者术后患膝皮温、C反应蛋白(CRP)和红细胞沉降率(ESR)的变化规律及相关性,探讨其在术后感染和非感染炎症反应鉴别诊断中的意义。方法 选取2021年1月至2022年1月于河北大学附属医院行单侧全膝关节置换术的36名患者为研究对象,分别于术前1天、术后1天、4天、7天、10天、14天、1月、2月、3月、6月测量双膝皮温、CRP和ESR,比较双膝皮温变化,分析双膝皮温差、CRP、ESR的变化规律,采用Spearman和Pearson法分析CRP ...
薛金伟 +4 more
doaj
利用常规探测资料和逐日模式预报资料分析台州市夏季高温的时空分布特征及其短临预报方法,结果表明:(1)台州各地夏季高温日数呈现了 一定的年际、地域变化特征.年际变化南部小,中北部大;20世纪50年代以来,台州高温日先减少后增加,夏季高温日存在10~16 a的年际振荡周期,南部洪家、温岭2站90年代后期以来出现明显的2~5 a周期振荡;高温日数由西北向东南递减,极端高温分布总体上由内陆向沿海递减.(2)浙江省气象台数值预报系统平台提供的WRF、NCEP、T639、ECMWF和JAPAN5家模式 ...
WANGHuihui(汪卉卉) +1 more
doaj +1 more source
Advances in research on the mechanical responses of hot dry granites under varying cooling conditions in China [PDF]
Significance Enhanced geothermal systems (EGSs) serve as a key technique for exploiting hot dry rocks (HDRs) presently. During the construction and operation of EGSs, rocks of the HDR reservoirs will experience various cooling conditions, such as natural
Chong ZENG +6 more
core +1 more source
Thermal and mechanical properties of fracture-filled granite with different structural forms under high temperature and high pressure [PDF]
The reservoir of deep hot dry rock (HDR) geothermal energy is not intact rock mass, which includes a large number of fractures induced by geological tectonic movement. The tectonic fractures are subsequently filled by hydrothermal fluid.
Weitao YIN, Zijun FENG
core +1 more source
Anatomical study on the chalkiness formation of early indica rice(早籼垩白米形成的形态解剖学的研究)
以浙733(多垩白)和中优早5号(少垩白)两个品种为实验材料,利用人工气候箱控温手段,在植株开花后4天分别移入高(37℃)、中(30℃)、低温(24℃)的人工气候箱控温栽培.采用Spurr树脂半薄切片的方法对垩白部位的细胞结构和淀粉粒整体形态进行观察研究.实验结果表明,温度越高,腹背径向的细胞越扁,细胞数目越多,越易导致垩白的发生;不同温度处理下中优早5号的淀粉粒大多为多角形,但温度越高,淀粉粒排列越疏松,且大小不均一;低温处理下浙733的淀粉粒大多为多角形,排列较为紧密,但大小不均一,中 ...
JIANGWei-mei(姜维梅) +2 more
doaj +1 more source
将在40℃条件下培养5d和10d的铜绿微囊藻(Microcystis aeruginosa FACHB905)转接至新鲜培养基,以25℃培养条件下转接的相同细胞密度的培养物为对照,然后均置于相同的培养条件下恢复生长.研究了各培养物的生长、叶绿素a浓度、光系统Ⅱ的光化学效率(Fv/Fm)、净光合速率和呼吸速率的变化.结果表明,在40℃高温下分别培养5d和10d,铜绿微囊藻的比生长速率、Fv/Fm等指标均受到显著抑制 ...
李敦海, 秦红杰
core
通过试验,对新型螺纹锚固螺栓连接T形节点在高温后的拉伸性能进行了研究。此类螺栓直接锚固于带螺纹的螺栓孔内,无需螺帽,非常适合用于闭口截面钢构件的连接。试验采用全周期的加载方式,以考虑火灾高温和荷载大小对节点在火灾后受力性能的影响。对于节点板厚和螺栓直径等参数对节点受灾后受力性能的影响也进行了分析。螺栓孔厚度和螺栓直径共同决定了节点的破坏模式,且对节点的在火灾后的承载力有一定的影响。火灾温度和荷载大小影响了节点的破坏阶段,但是并不改变节点的破坏模式。对于火灾中未发生破坏的节点 ...
尤洋 +4 more
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Representation of obligate groundwater‐dwelling copepod diversity in European protected areas
Abstract Groundwaters sustain diverse surface ecosystems and are populated by metazoan species, mostly invertebrates, that provide fundamental ecological functions and are often of prominent conservation value due to narrow endemism and high phylogenetic rarity.
Francesco Cerasoli +7 more
wiley +1 more source
因生产中使用的灰蓝釉配方均采用锆系釉,具有高温粘度大,烧成温度高的特点;而坯料烧成温度低,产品烧成温度不能太高,造成灰蓝釉产品因烧成温度低而出现窑后流痕、缩釉,桔釉、表面不平整等现象,影响产品的外观。所以,需研制与坯料烧成温度匹配的低温电瓷灰蓝釉配方。
杨娟
doaj
ABSTRACT Bismuth anode materials are considered promising anode candidates for sodium–ion batteries (SIBs) due to their high theoretical capacity and appropriate working potential. Nevertheless, the significant volume expansion that occurs during the cycling process restricts its broader application in sodium–ion storage. Herein, Bi/Bi2O3 nanoparticles
Jiaju Lu +3 more
wiley +1 more source

