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We have investigated the nature of violet-blue emission from (Ge, Er) codoped Si oxides (Ge+Er+SiO2) using photoluminescence (PL) and positron annihilation spectroscopy (PAS) measurements. The PL spectra and PAS analysis for a control Ge-doped SiO2 (Ge+SiO2) indicate that Ge-associated neutral oxygen vacancies (Ge-NOV) are likely responsible for the major emission in the violet-blue band. For Ge+Er+SiO2, both Ge-NOV and GeO color centers are believed to be responsible for the emission band. The addition of Er has a significant influence on the emission, which is discussed in terms of Er-concentration-related structural change in the Ge+Er+SiO2. [ABSTRACT FROM AUTHOR]

Measures the positron lifetime spectra and ionic conductivity for poly(ether urethane)-LiCIO[aub4] polymeric electrolyte as a function of temperature. Significance of ionic conductivity in polymeric systems; Existence of free-volume holes in polymers; Relationship between the ionic conductivity and the positron annhilation parameters through polymer structural properties.

The inhibin βB (INHBB) gene was studied as a candidate gene for the prolificacy of Jining Grey goats. According to the sequence of bovine INHBB gene, two pairs of primers were designed to detect single nucleotide polymorphism in exon 2 of INHBB gene in high-prolificacy (Jining Grey) band low-prolificacy (Inner Mongolia Cashmere and Angora) goats by polymerase chain reaction-single strand conformation polymorphism method. Only the amplified products of primer P2 showed polymorphism. Three genotypes (AA, AB and BB) were identified in Jining Grey and two (AB and BB) in Inner Mongolia Cashmere and Angora goats. Sequencing revealed one single nucleotide mutation (A→G) at base 782 of exon 2 of INHBB gene in BB genotype compared to genotype AA. In Jining Grey goats the frequencies of A and B alleles were 0.318 and 0.682 while of AA, AB and BB genotypes reached 0.068, 0.500 and 0.432, respectively. The Jining Grey goats remained in Hardy-Weinberg equilibrium (chi-square = 3.36, P = 0.1861). These of genotype AA delivered by 0.73 (P<0.05) or 0.84 (P<0.05) kids more than those with genotype AB or BB, while does of genotype AB-- by 0.11 (P>0.05) kids more than did does of genotype BB. [ABSTRACT FROM AUTHOR]

Objective: To investigate clinical features of mucosa-associated lymphoid tissue lymphoma(MALT) of the parotid gland. Method: Retrospective analysis was made in 10 patients who were dignosed as MALT of the parotid gland. Clinical symptoms, CT scanning and pathologic immunohistochemistry data, surgery procedure and prognosis were collected for analysis. Result: The main complain of patients was slow growing masses under the earlobes without pain. The lesion location was found at the superficial lobe of the parotid gland in 8 cases and deep lobe in 2 cases, respectively．CT scanning exhibited density isodense or hyperdense nodules, with occasional calcification and necrosis in these patients. Enhancement CT scanning exhibited lower or moderate enhancement, circumambient enhancement or delayed enhancement. Pathological examinations showed that the gland was heavily infiltrated by lymphoid cells and epimyoepithelial island were frequently observed. B-lymphocyte was found positive in these patients by histopathological examination. All patients underwent surgical treatment. According to the tumor sites, patient received the superficial parotidectomy or total parotidectomy. The postoperative follow-up period was 1 to 7 years. No tumor recurrence occurred in any patients during the follow-up time. Conclusion: The diagnosis of MALT lymphoma of the parotid gland should combined with clinical manifestation, imaging examination and pathology.symptoms,CT scanning and pathologic immunohistochemistry data. Surgery was the major treatment, combined with postoperative radiation and chemotherapy, the prognosis is good, However, long-term efficacy need further observation．., Competing Interests: The authors of this article and the planning committee members and staff have no relevant financial relationships with commercial interests to disclose., (Copyright© by the Editorial Department of Journal of Clinical Otorhinolaryngology Head and Neck Surgery.)

Recent experiments have shown that gecko adhesion underwater depends significantly on surface wettability. Theoretical models of a gecko seta adhering on different substrates are firstly established in order to disclose such an adhesion mechanism. The results show that the capillary force induced by nano-bubbles between gecko seta and the substrate is the mainly influencing factor. The capillary force exhibits an attractive feature between gecko setae and hydrophobic surfaces underwater. However, it is extremely weak or even repulsive on hydrophilic surfaces underwater. A self-similarly splitting model is further considered to simulate multiple gecko setae on substrates underwater. It is interesting to find that the total capillary force depends significantly on the number of nano-bubble bridges and wettability of substrates. The total force is attractive and increases monotonically with the increase of the splitting number on hydrophobic substrates underwater. However, it decreases drastically or even becomes repulsive on hydrophilic substrates underwater. The present result can not only give a reasonable explanation on the existing experimental observations but also be helpful for the design of novel biomimetic adhesives., (Copyright © 2014 Elsevier B.V. All rights reserved.)

The loading of dendritic cells (DCs) with whole tumor cell lysates may circumvent the facts that few tumor-specific antigens have been identified in human solid tumors. The present study was designed to investigate whether ovarian cancer cells lysate-pulsed DCs activate T cell responses against autologous ovarian tumors. Incubation of T cells with autologous tumor cell lysate-pulsed DCs stimulated proliferation of autologous T cells. T cells primed by autologous tumor cell lysate-pulsed DCs showed significant killing activity against autologous tumor cells, which could be blocked by anti-MHC-class-I and anti-CD8 mAb. By contrast, T cells primed by autologous unpulsed DCs alone or tumor lysates alone failed to exhibit significant killing activity. In addition, T cells primed by DCs pulsed with allogeneic tumor cell lysates or with autologous normal cell lysate or by these cell lysates alone did not induce the increase in the autologous tumor killing activity. As additional controls, T cells stimulated with autologous tumor lysate-pulsed DCs express no increase in the lysis of autologous monocytes, allogeneic ovarian tumor cells and other cell lines including K562, Daudi and Molt-4. Furthermore, T cells stimulated with autologous tumor lysate-pulsed DCs could produce the considerable amounts of cytokines such as GM-CSF, TNF-alpha and IFN-gamma. The data in the present study suggest that whole tumor cell lysates-pulsed DCs could activate T cell responses against autologous ovarian tumor cells, and that these pulsed DCs may be used as a new approach for the specific immunotherapy of ovarian cancer patients.