Enhanced second-harmonic generation from gold complementary split-ring resonators with a dielectric coating.

We experimentally and theoretically investigate the influence of alumina coating on the second-harmonic generation (SHG) from split-ring resonator shaped air apertures engraved in a gold film, which are also termed as complementary split-ring resonators (CSRRs). By coating the CSRR arrays with alumina film of certain thickness, we precisely tune their electric diploe resonances (EDRs) to overlap the fundamental wavelength (FW) and realize the EDR enhanced SHG process. On this basis, by shortening the arm length of the CSRRs and then coating them with a certain thickness of the alumina film, we have achieved an SHG enhancement of nearly 1.

Sclerosing encapsulating peritonitis: three case reports and review of the literature.

Sclerosing encapsulating peritonitis (SEP) is a disease that is rarely encountered clinically. Preoperative diagnosis of SEP can be difficult. However, with imaging technology, such as computed tomography (CT), this condition can be diagnosed without surgery and pathological analysis.

GDF15 promotes epithelial-to-mesenchymal transition in colorectal [corrected].

Growth differentiation factor 15 (GDF15) is a divergent member of the transforming growth factor-β (TGF-β) superfamily that has been associated with colorectal cancers (CRC). However, the role of GDF15 in the progression of CRC remains unknown. We demonstrated that GDF15 expression was higher in fresh CRC tissues than in adjacent normal tissues.

Tunable Multiple-Step Plasmonic Bragg Reflectors with Graphene-Based Modulated Grating.

We propose a novel plasmonic Bragg reflector (PBR) based on graphene with multiple-step silicon structure. The monolayer graphene bears locally variable optical properties by modulation of electric fields, and the periodical change of effective refractive index on graphene can be obtained by external bias voltage in the mid-infrared region. Through patterning the PBR units into multiple-step structures, we can decrease the insertion loss and suppress the rippling in transmission spectra.

Interpreting the distinct and shared genetic characteristics between Epstein-Barr virus associated and non-associated gastric carcinoma.

Gastric carcinoma is one of the major causes of cancer mortality worldwide. There is a better prognosis for patients with Epstein-Barr virus (EBV)-associated gastric carcinoma (EBVaGC) compared with those with EBV negative gastric carcinoma (EBVnGC). It is partly due to the fact that EBV infection recruits lymphocytes infiltrating the tumor.

[A multicentre retrospective cohort study of patients with gastrointestinal stromal tumors in Shandong Province].

Objective: To investigate the clinicopathological features and prognosis of patients with gastrointestinal stromal tumor(GIST) after surgery in Shandong Province.

Methods: Clinicopathological data of GIST patients undergoing surgery from January 2001 to June 2013 in four university teaching hospitals in Shandong Province were reviewed. Pathology results were rechecked.