The electrocardiogram (ECG) is a representation of electrical activity on a graph that occurs within the myocardium. The horizontal axis measures time in seconds on an ECG strip. Several important intervals that are determined on ...
在均匀致密完整的围岩中，受到初始的垂直应力σv=10MPa和水平应力σh=15MPa。在该岩体中进行圆形硐室开挖，如下图所示，R0=5m。假设在开挖完成后围岩依然处于弹性状态，请问在硐顶岩壁处（θ=90°，R0=5m）的最大主应力为
According to the so-called "painting method", the bilayer is spontaneously formed by placing a drop of a lipid in a suitable solvent, e.g., decane, on the hole, using a brush. These BLMs provide a friendly environment to integral proteins, but incorporate an appreciable amount of ...
Once this location is determined, an active fixation lead is deployed, and lead parameters are checked in both unipolar and bipolar modes (Figure 4). Figure 4. ECG results after conduction system pacing. (A) Left bundle branch pacing (bipolar); (B) left bundle branch pacing (unipolar). ...
Sign up with one click: Facebook Twitter Google Share on Facebook Dictionary Thesaurus Medical Financial Idioms Encyclopedia AcronymDefinition LEADSLocal Enable Address Strobe LEADSLaw Enforcement Automated Data System(State of Ohio) LEADSLaw Enforcement Agencies Data System(State of Illinois) ...
什么是金属材料的“屈服”。答：金属材料试样承受的外力超过材料的弹性极限时，虽然应力不再增加，但是试样仍发生明显的塑性变形，这种现象称为屈服，即材料承受外力到一定程度时，其变形不再与外力成正比而产生明显塑性变形。产生屈服时的应力成为屈服极限。（ ）
PTHrP interacts with receptors on osteoblasts that results in an increase in RANKL and decrease in osteoprotegerin (OPG) secretion. As OPG is an inhibitor of RANKL, the increase in the RANKL-OPG ratio favors osteolytic lesions [42]. RANKL is secreted by breast cancer cells in response to ...
2. Di2st. iDnigsutiinsghuiinsghiBngaBndanCd VCeVrteircteicses The structural studies we have performed on the isomers of [CpCoC2B9H11] highlight an Timhpeosrttarnutctpuorianlt—stsuindcieesthwe iesohmaevres apreerdfoisrtmingeudisohnedthonelyisboymtehrespoofsit[iConpsCoofCt2hBe9{HBH11...
In an effort to both honor and build on this previous work that spans half a century, we introduce a related, but slightly different concept for our purposes: Polymodal media. It is defined as the multiple modalities with which a single media can be used. In agreement with the literature ...
1.2. Local Governments and Critical Infrastructure The local scale is particularly important for risk reduction because most human experiences and decisions related to DRR happen at the local level [4,14–25]. At this scale, human security and quality of life depend partly on how local ...