A solar air collector (SAC) is a main device of solar-thermal system, which can absorb radiation and transfer the absorbed thermal energy to air. This paper presents systematic review three basic types SAC, namely, flat-plate SAC (FPSAC), evacuated tube (EVTSAC), concentrated SAC. High efficiency, low heat loss simple structure have always been goals SACs development research. Enhancement metho...

We report a case of large vestibular aqueduct syndrome with a markedly dilated endolymphatic sac bilaterally. The density and signal intensity of the extraosseous portion of the sac were higher than those of cerebrospinal fluid on CT and MR studies. The findings may represent protein-rich and hyperosmolar fluid within the endolymphatic sac.

Cement stabilization improves physical and mechanical properties of geotechnical materials. However, numerous combinations materials cement hinder to establish a pattern behavior cement-stabilized Thus, this study aims evaluate the soil-aggregate-cement mixtures (SAC) using high early-strength (HE), contribute dosage aspects ascertain their recommendation as base and/or subbase layers in heavy ...

The spindle assembly checkpoint (SAC) restrains anaphase progression to ensure all chromosomes attach properly to the spindle. Although SAC timing has been extensively investigated in mitosis, its mechanism of regulation in interphase is unclear. We report that PTEN functions as a crucial activator of SAC timing and protects chromosome segregation under both spindle poison treated and untreated...

Intracranial germ cell tumours are rare. The incidence of primary intracranial yolk sac tumour is even more uncommon, with only two reported cases being associated with Down's syndrome in the English literature. This report details the findings of yolk sac tumour in the pineal region affecting a 22 year old Chinese man with Down's syndrome. Histology revealed yolk sac tumour with only a solid p...

The von Hippel-Lindau (VHL) disease is caused by VHL germ line mutation. Inactivation of the wild-type copy of the VHL gene leads to up-regulation of hypoxic response and tumor formation within central nervous system (CNS), kidneys, pancreas, adrenal glands, epididymis, broad ligament, and the endolymphatic sac/petrous bone. Endolymphatic sac tumors (ELST) have been proposed to be derived from ...

When vermiform appendix is found in the inguinal hernial sac, the condition is called Amyand's hernia (AH). Appendix in hernial sac can be normal, inflamed or perforated. It can present as complicated hernia or acute scrotum. We present a case of Amyand's hernia in a 25-day-old male who presented with an obstructed hernia having perforated appendix in the hernial sac.