Efficient terahertz transmission modulation in plasmonic metallic slits by a graphene ribbon array.

Extraordinary optical transmission is the widely known phenomenon of enhanced transmission of waves through subwavelength periodic metallic apertures. Here, we propose efficient terahertz transmission modulation in subwavelength metallic slits by a graphene plasmonic ribbon array. The extraordinary optical transmission through the subwavelength metallic slits can be tuned by coupling with the plasmonic resonance of graphene ribbon array, resulting in a deep transmittance depression. Numerical simulations show that maximal transmission modulation depth of 98.99% can be obtained at 1.03 THz via this mechanism.

Molecular cloning and expression vector construction of bovine TRIM28.

The bovine TRIM28 gene was amplified from ovary tissue by using RT-PCR. The TRIM28 gene was inserted into the eukaryotic expression vector pIRES2-EGFP and transfected into bovine fetal fibroblasts by using Lipofectamine 3000. TRIM28 mRNA and protein were detected by fluorescence microscope and western blotting. The results showed that the full length of TRIM28 was cloned and pIRES2-EGFP-TRIM28 was constructed successfully. EGFP expression was observed, and the pIRES2-EGFP-TRIM28 transfected group expressed more TRIM28 protein than that by the pIRES2-EGFP group. The TIMR28 gene has been successfully transferred into bovine fetal fibroblasts.

[Pelvic autonomic nerve preservation in rectal cancer: anatomical concept and clinical significance].

Colorectal cancer is one of the most common cancers in the world, and surgery is the mainstage treatment. Urogenital and sexual dysfunction after radical resection of rectal cancer has become an important problem for patients, which seriously affects the quality of life. Some patients give up radical surgery for rectal cancer because of the concerns about sexual and urinary dysfunction. The cause of this problem is intraoperative of injury pelvic autonomic nerve. The preservation of the hypogastric nerve during the surgery is important for the male ejaculation. Pelvic splanchnic nerves are mainly responsible for the male erection. The anatomical origin, distribution, and urogenital function of these two nerves are detailed described in this article. At the same time, this article introduces the classification, key points of the operation and the evaluation of autonomic nerve preservation surgery. With the rapid development of minimally invasive surgery, performing radical surgery for rectal cancer is important, we also need to fully understand the anatomical concept of pelvic autonomic nerves, and apply modern minimally invasive surgical techniques to preserve the patient's pelvic autonomic nerves as well. It is an compulsory course and an important manifestation for the standardization of rectal cancer surgery.

Determination of solubilities and n-octanol/water partition coefficients and QSPR study for substituted phenols.

A shake-flask method was employed to determine the water solubility (-lgS (w)) and n-octanol/water partition coefficient (lgK (ow)) of 20 substituted phenols at 298.15 K. And optimized calculation was carried out at B3LYP/6-311G** level with DFT method. Afterwards the obtained parameters were taken as theoretical descriptors to establish the QSPR models for predicting -lgS (w) and lgK (ow), in which the conventional correlation coefficients (R (2)) are 0.9800 and 0.9941, respectively. The two models were further validated by variance inflation factors (VIF) and t-test. Upon comparison, the stability and predictive power are more advantageous than those based on AM1 molecular orbital method and molecular connectivity method.