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PurposeHepatocellular carcinoma (HCC) patients with alpha-fetoprotein (AFP)-negative (

Purpose: To determine risk factors of postoperative urethral stricture (US) and vesical neck contracture (BNC) after transurethral resection of prostate (TURP) from perioperative parameters. Materials and Methods: 373 patients underwent TURP in a Chinese center for lower urinary tract symptoms suggestive of benign prostatic obstruction (LUTS/BPO), with their perioperative and follow-up clinical data being collected. Univariate analyses were used to determine variables which had correlation with the incidence of US and BNC before logistic regression being applied to find out independent risk factors. Results: The median follow-up was 29.3 months with the incidence of US and BNC being 7.8% and 5.4% respectively. Resection speed, reduction in hemoglobin (ΔHb) and hematocrit (ΔHCT) levels, incidence of urethral mucosa rupture, re-catheterization and continuous infection had significant correlation with US, while PSA level, storage score, total prostate volume (TPV), transitional zone volume (TZV), transitional zone index (TZI), resection time and resected gland weight had significant correlation with BNC. Lower resection speed (OR=0.48), urethral mucosa rupture (OR=2.44) and continuous infection (OR=1.49) as well as higher storage score (OR=2.51) and lower TPV (OR=0.15) were found to be the independent risk factors of US and BNC respectively. Conclusions: Lower resection speed, intraoperative urethral mucosa rupture and postoperative continuous infection were associated with a higher risk of US while severer storage phase symptom and smaller prostate size were associated with a higher risk of BNC after TURP.

Objective: Aging caused by a deficiency syndrome can be found in ancient and modern traditional Chinese medicine literature. Qi deficiency syndrome (QDS) is a vital factor in the aging process. This study aimed to establish a full-scale trial to evaluate the prevalence, symptom severity, frequency, and distribution of QDS in different age groups and varying health status to elucidate the role of qi deficiency in the aging process and deterioration of health. Methods: This cross-sectional study was conducted in four hospitals in China, and data from 1220 participants were included. The participants, aged between 20 and 79 years, completed questionnaires that recorded prevalence of QDS and severity or frequency of relevant symptoms, then were interviewed by investigators. We used frequency analysis and chi-squared tests to perform comparative analysis of prevalence in different age and health groups; we used a rank-sum tests for quantitative analysis of symptoms severity and frequency scores; we performed a regression analysis of correlation between syndrome occurrence and potential factors using non-conditional binary logistic stepwise regression of numerical variables. P

A sensitive Z-scan measurement system using a femtosecond Nd∶ YAG laser(800 nm) as the excited light and based on Labview is reported.Under the control of Labview,the digital oscilloscope TDS3012 and the micro-translation stage are used to measure the light intensity,and the Z-scan function is realized.By taking a 800 nm fs laser from a Nd∶ YAG fs amplifier as a detecting light,the two transmittance intensities of light is measured by passing it through a thin nonlinear sample with a digital oscilloscope.Then both the nonlinear refractive index and nonlinear absorption coefficient can be obtained.The nonlinear absorption coefficient of Rhodamine 6B at 800 nm was measured.The results produced a two-photon absorption cross-section of 6.8 GM(GM=10-50 cm4 s photon-1 molecule-1).The system is shown to be reliable by comparison of our measured results with the those obtained from other different measuring methods.

Deficiency of the organs is a vital pathophysiologic characteristic in the elderly. A core TCM aging theory is known as aging caused by spleen deficiency syndrome (SDS) that can be found in ancient and modern literature. The key objectives of this study were to establish a full-scale trial to evaluate the prevalence, symptom severity, frequency, and distribution of SDS in different age groups as related to health status (healthy, subhealthy, and chronic disease) to elucidate the role of spleen deficiency in the aging process and deterioration of health status. This cross-sectional observational study was conducted in 4 hospitals in China. 1390 participants aged 20–79 were interviewed by investigators who completed questionnaires recording prevalence, severity, and frequency of symptoms as well as other relevant information. The results revealed that prevalence and symptom characteristics of SDS showed regularities with increasing age and deteriorating health status. It supports the TCM concept that spleen deficiency is an important mechanism of aging, subhealth, and chronic diseases. Early recognition of the warning signs and symptoms of SDS may lead to intervention and even prevention strategies for subhealth and chronic diseases as well as promotion of healthy aging.

Longitudinally polarized subwavelength beams have found many applications such as particle acceleration, single molecule dipole detection, second harmonic generation imaging, longitudinally polarization confocal microscopy. We present a radially modulated Bessel-Gaussian beam model which produces longitudinally polarized beams with high purity after being focused by high numerical aperture objective. Based on the vector diffraction theory, the electric field intensity distribution, magnetic field intensity distribution and energy flux density near the focal plane are numerically simulated. The result shows that the full-width at half-maximum is as small as 0.4λ. The method does not require a physical annulus or annular phase filter and it features high energy efficiency, high resolution, thus improving application performances.