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The acoustic phonon transport in a four-channel quantum structure is investigated by use of the scattering matrix method. It is found that different acoustic phonon modes transport selectively into different channels, standing waves can be formed owning to acoustic phonons interfering with each other in the quantum structure, the transmission coefficients of acoustic phonon through different channels depend sensitively on the parameters of the structure, and the channels all exhibit the noninteger quantized thermal conductance at very low temperatures due to the splitting of the quantum structure. The structure may be used as a split device for acoustic phonon modes and controlling the acoustic phonon transport. [ABSTRACT FROM AUTHOR]

Objective: To identify different clinical and pathological features for adult and juvenile granulosa cell tumors., Methods: The clinical records of 42 patients with granulosa cell tumors of ovary, including pathological features, treatments and follow up results between April 2001 and September 2009 were reviewed., Results: 1) There were 38 newly diagnosed cases after 2001, and 4 cases were relapsed cases diagnosed before 2001. The 38 cases accounted for 3.13% of ovarian cancer cases treated in our hospital. 2) Twenty nine of the 38 cases (76.3%) were Adult Type, while the other 9 (23.7%) were Juvenile Type. The median onset age were 53 and 25 years old for the Adult Type and Juvenile Type, respectively, which shows significant difference (z = -2.990, P = 0.003). 3) The most common symptoms and signs were abdominal pain (44.7%), vaginal bleeding (42.1%), and abdominal mass (76.3%). The most common complications were endometrial hyperplasia (52.6%) and hysteromyoma (21.1%). 4) Stage I, II and III comprised 73.7%, 23.7% and 2.6% of the 38 cases, respectively. Ten patients ng the underwent conservative unilateral oophorectomy or ovarian enucleation. Twenty patients underwent total abdominal hysterectomy plus bilateral salpingo-oophorectomy. Eight patients underwent cytoreductive surgery. The 42 patients had been followed up for 7 to 175 months, with 14 patients lost of contact. No death was recorded. Inhibin, calretinin, and vimentin were demonstrated to be useful for the diagnosis of granulose cell tumors., Conclusion: With low incidence rate, ovarian granulosa cell tumor is a low-grade malignant and functional tumor. Most are unilateral diseases. Most Adult-type granulosa cell tumors occur in middle aged and elderly people, while most juvenile granulosa cell tumors occur in adolescents and children. Acute abdomen symptom may occur but ascites are less likely to occur in patients with granular cell tumors than those with epithelial ovarian cancers. Ovarian granulosa cell tumors are usually detected early, but easily relapse. Long-term follow-up is needed.

Objective: To disscuss different outcomes of ASC-UC and ASC-H, two subtypes of ASC, and the significance of HPV-DNA genotyping assays in these two subtypes., Methods: We reviewed and analyzed colposcopic and biopsy results of 1256 cases of ASC between Jan. 2005 to Dec. 2007, of which 580 cases have results of HPV-DNA genotyping assays., Results: In 1256 ASC cases, ASC-US and ASC-H cases account for 90.1% and 9.9% respectively, CIN2 and higher levels diagnosed via colposcopy and cervical biopsy are 8.5% and 24.2% respectively (P = 0.000). In ASC-US cases, the infection rate of HPV-DNA high risk types is 67.2%, there is statistic significance among different HPV-DNA results and biopsy pathology (P = 0.000). In ASC-H cases, the infection rate of HPV-DNA high risk types is 47.3%, there is no statistic significance among them (P = 0.054)., Conclusion: The clinical outcomes of ASC-US and ASC-H are different, we should distinguish and treat. HPV-DNA genotyping assay is available in ASC-US triage, but Colposcopy is proposed for all ASC-H patients.

Objective: To compare the clinical characteristics of transvaginal hysterectomy (TVH) and total laparoscopic hysterectomy (TLH)., Method: Clinical data about 301 cases who received TVH and TLH were collected and the hospital stay days, medical expenses, diagnoses, operation and recovery status were compared between TVH and TLH groups., Results: The ratio of cervical atypical hyperplasia (9.64%), multipara (96.45%) in TVH was higher than that in TLH (2.88%, 89.42%). The ratio of adenoma (29.44%), adnexal disease (4.55%), pelvic endometriosis (4.06%), history of cesarean section (7.11%) in TVH were lower than that in TLH (43.27%, 31.73%, 12.50%, 24.04%). The operation time (76 +/- 28) minutes, bleeding during operation (170 +/- 125) ml, additional operations (5.08%), pelvic adhesion (4.57%), loosening of pelvic adhesion (0.51%), the diameter of the largest myoma or adenoma (49 +/- 17) mm, expenses for operation and hospitalization (1073 +/- 203) yuan in TVH were lower than those in TLH, which were (139 +/- 52) minutes, (206 +/- 153) ml, 36.54%, 41.35%, 17.31%, (57 +/- 22) mm, (1526 +/- 676) yuan respectively. The differences were significant (all P < 0.05). There was no difference of the uterine weight, complication and length of hospitalization duration between the two kinds of operation., Conclusions: TVH is recommended in cases of few pelvic adhesion, or adnexal disease, cervical disease and of multipara. The uterine weight is not a decisive factor.

Objective: To investigate the expression of PDCD5 in tissues of normal cervix, CIN I-III, cervical cancer and explore the relationship between PDCD5 and cervical cancer., Methods: After we defined the most fitful condition, tissues from 18 cases of normal cervix, 19 of CIN I, 18 of CIN II, 20 of CIN III and 18 of cervical cancer were defined by indirect immunohistochemical technique. Positive expression rates and intensity of PDCD5 protein were investigated by observing under microscope and analyzing with computer imaging technique. The results were analyzed with one-way anova., Results: The results of immunohistochemical staining showed that the percentage of strong positive cells in normal cervical tissue and CIN I were significant higher than those of CIN II, CIN III and cervical cancer. On the whole of the condition of immunohistochemical staining, the expressions of PDCD5 were downregulated along the progression of cervical atypical epithelia, but that in CIN I was upregulated. The ODs of normal cervix,CIN I-III,cervical cancer were 0.322, 0.366, 0.287, 0.252, and 0.206 respectively. The intensity of each group showed obvious differences., Conclusion: We found that the expression of PDCD5 was upregulated in CIN I and downregulated in CIN II, CIN III and cervical cancer. It suggests that PDCD5 is an important apoptosis regulating factor in the occurrence of cervical cancer.