Abstract Given the problems existing in operation of supercritical 600MW boiler, such as spiral pipe water cooling wall outlet, superheater and reheater surface overtemperature easily, amount are too large under high load, low load is small to meet need cold heating, boiler combustion optimization adjustment carried out. Through pulverized coal fineness, air distribution characteristics, swingi...

background: establishment of viable pregnancy requires embryo implantation and placentation. ectopic pregnancy (ep) is a pregnancy complication which occurs when an embryo implants outside of the uterine cavity, most often in a fallopian tube. on the other hand, an important aspect of successful implantation is angiogenesis. vascular endothelial growth factor (vegf) is a potent angiogenic facto...

Light which enters a photomultiplier tube is detected and produces an output signal through the following processes. (1) Light passes through the input window. (2) Light excites the electrons in the photocathode so that photoelectrons are emitted into the vacuum (external photoelectric effect). (3) Photoelectrons are accelerated and focused by the focusing electrode onto the first dynode where ...

Background Establishment of viable pregnancy requires embryo implantation and placentation. Ectopic pregnancy (EP) is a pregnancy complication which occurs when an embryo implants outside of the uterine cavity, most often in a fallopian tube. On the other hand, an important aspect of successful implantation is angiogenesis. Vascular endothelial growth factor (VEGF) is a potent angiogenic factor...

We studied the possible effects on serum carbohydrate-deficient transferrin (CDT) determination by a CDTect (Pharmacia) method of serum isolation in four different types of blood-collection tubes, namely: (1) glass tubes (glass Vacutainer tubes with no additive); (2) S-Monovette Neutral tubes (plastic tubes with no additive); (3) S-Monovette Serum tubes (plastic tubes with kaolin-coated plastic...

Material properties and geometry are two important design parameters which their effects should be considered in a crashworthiness analysis. In this paper, the axial impact of metallic and hybrid energy absorbing thin-walled tubes with poly-gonal cross-section is simulated using LS-DYNA software. The combined effects of changing the geometry and material properties on the mass specific energ...