Sound transmission loss of multi-layered infinite micro-perforated plates.

In this paper, the sound transmission loss (STL) of multi-layered infinite micro-perforated plates (MPPs) is studied. A prediction model for the STL of the multi-layered infinite MPPs is developed, where each MPP may or may not have a perforation, and the number of MPPs is arbitrary. When the frequency of interest is well below the critical frequency of the plate such that the effect of flexural vibration can be neglected compared to that of the inertia term, the mass is replaced by an equivalent complex mass.

Metastasis of renal cell carcinoma to the bladder.

Renal cell carcinoma is an uncommon source of bladder metastases. Here we report a case of renal cell carcinoma that metastasized to the bladder. A 73-year-old woman complained of gross hematuria.

Use of cystoscopic tattooing in laparoscopic partial cystectomy.

Purpose: During laparoscopic partial cystectomy (LPC), lesion identification is essential to help to determine the appropriate bladder incisions required to maintain adequate resection margins. The inability to use tactile senses makes it difficult for surgeons to locate lesions during laparoscopic surgery. Endoscopic India ink marking techniques are often used in laparoscopic gastroenterological surgery.

Skeletal muscle metastases from urothelial cell carcinoma.

Hematogenous metastasis to skeletal muscle from urothelial carcinoma is extremely rare and metastatic disease to skeletal muscle tends to be found in people with advanced-stage neoplasm. We report in this paper a case of left sartorius muscle metastasis from urothelial cell carcinoma. A left nephroureterectomy with bladder cuff excision was performed and revealed a high-grade papillary transitional cell carcinoma (TCC) of the pelvis.

Study on the factors related with intention of cancer screening among Korean residents: application of information-motivation-behavioral skills model.

This study investigated the relationship between intention of undergoing cancer screening and information, motivation, and behavioral skills using an information-motivation-behavioral skills model. The authors performed a telephone survey of a random sample of 2030 residents aged 30 to 69 years from 6 counties of Gangwon province, South Korea from July 15 to July 25, 2009. Questions about information, motivation, and behavioral skills were examined using a confirmatory factor analysis and relationships among factors were analyzed using a structure equation model.

Neovesical-urethral anastomotic stricture successfully treated by ureteral dilation balloon catheter.

Neovesical-urethral anastomotic stricture is a complication of orthotopic neobladder, with a reported incidence of 2.7% to 8.8%.

Haploidy influences Bak and Bcl-xL mRNA expression and increases incidence of apoptosis in porcine embryos.

The objective of this study was to determine developmental pattern, total cell number, apoptosis and apoptosis-related gene expression in haploid and diploid embryos following parthenogenetic activation. In vitro-matured porcine oocytes were activated by electrical pulses and cultured in the absence or presence of cytochalasin B for 3 h. Zygotes with two polar bodies (haploid) and one polar body (diploid) were carefully selected and were further cultured in NCSU 23 medium containing 0.

Pronucleus formation, DNA synthesis and metaphase entry in porcine oocytes following intracytoplasmic injection of murine spermatozoa.

The onset of pronucleus formation and DNA synthesis in porcine oocytes following the injection of porcine or murine sperm was determined in order to obtain insights into species-specific paternal factors that contribute to fertilisation. Similar frequencies of oocytes with female pronuclei were observed after injection with porcine sperm or with murine sperm. In contrast, male pronuclei formed 8-9 h following the injection of porcine sperm, and 6-8 h following the injection of murine sperm.

Chromatin and microtubule organisation in maturing and pre-activated porcine oocytes following intracytoplasmic sperm injection.

Chromatin and microtubule organisation was determined in maturing and activated porcine oocytes following intracytoplasmic sperm injection in order to obtain insights into the nature of sperm chromatin decondensation and microtubule nucleation activity. Sperm chromatin was slightly decondensed at 8 h following injection into germinal vesicle stage oocytes. Sperm-derived microtubules were not seen in these oocytes.

Male pronuclear formation and sperm mitochondria in porcine oocytes following intracytoplasmic injection of pig or mouse sperm.

In the present study we determined the chromatin organization and fate of introduced mitochondria in porcine embryos following intracytoplasmic injection of pig or mouse sperm cells. At 3, 6, 9 and 12 h following injection of pig or mouse spermatozoa or isolated sperm heads, the oocytes were fixed and stained with propidium iodide. Between 3 and 6 h following injection, both porcine and murine sperm chromatin developed into pronuclei.