EVs mainly carry the bioactive molecules of donor cells, such as proteins, DNA or RNA, and target nearby or remote cells to perform different biological functions, thus affecting the physiological and pathological processes of recipient cells. Cells can also discharge their waste by EVs. By ...
接下来回顾 几类函数空间的定义. 记 C0(R+,X):={f∈BUC(R+,X):limt→+∞f(t)=0},C0(R+,X):={f∈BUC(R+,X):limt→+∞f(t)=0}, 记SV(R+,X):={f∈BUC(R+,X):对于任意t∈R+,有S(t)f−f∈C0(R+,X)},SV(R+,X):={f∈BUC(R+,X):对于任意t∈R+,有S(t)f−...
Microstructure of silicon column templates and its mechanism of regulation in porous cover plate method; (b) controlled evolution of two-dimensional bubble array under the control of porous cover plates [74]; (c) preparation process of decompression method; (d) controlled evolution process of two-...
这主要是因为比热性质反映物质结构信息的温区一般较低(小于20 K); 而随着温度的升高, 根据杜隆珀替定律(Dulong-Petit law), 大部分固体单质的摩尔比热趋于一致; 因此, 国内外大部分有关比热性质研究工作集中在液氦至300 K温区开展. 图S1汇总了SciFinder数据库中收录的2015年以来有关低温比热(low temperature ...
(Color online) Research contents of MTL in aerial images 3.2.1 多任务共享机制 按照任务间是否共享网络以及参数, MTL主要分为硬参数共享(如图4(a))和软参数共享(如图4(b))两种机制. 硬参数共享中不同任务间共享部分网络结构, 而软参数共享则使用更为灵活的方式进行任务间的信息交互. 除此以外, 在有些多...
In the past, electrochemical sensors based on natural enzymes have been developed, but the drawbacks of natural enzymes such as complicated preparation, difficult purification, poor catalytic activity and stability, which limit their research and application. In recent years, numerous studies have found...
Schematic diagram of the ZBO storage technology2.2.3 储罐类型 存储液氢的容器一般称为液氢储罐, 由低温材料制成并且需要具有良好的绝热性能. 液氢储罐种类较多, 根据其使用场景不同, 可以分为固定式和移动式两类; 根据储罐所用绝热方式不同, 又可以分为普通堆积绝热储罐和真空绝热储罐两类[111]. 由于绝热方式...
Metal-air battery is an important direction in the field of electric vehicle technology development since it has high energy density, low cost, no pollution and can be recycled. Ionic liquid becomes a new kind of electrolytes in the field of metal-air battery since it has high thermal stabilit...
As the resolution of numerical prediction systems increases, the subgrid-scale orographic gravity wave drag (GWD) and low-level blocking parameterization become less suitable. To address this issue, WRFv4.3 has introduced two additional orographic drag suites: small-scale GWD and turbulent orographic ...
The results showed that changing the thermal properties of drilling fluid or reducing the thermal conductivity of the drill string could effectively lower the bottomhole circulating temperature in the Shunbei No.1 Area.顺北一区油气井垂深大、井筒温度高,部分井最高温度超过170 ℃,而国内现有测量仪器的...