Basic Study on Sediment Behavior in the Chiyoda Experimental Channel

Source: ICHE Conference Archive - https://mdi-de.baw.de/icheArchiv

Satellite-derived snow grain size over the Greenland Ice Sheet and its relationships with climate indices

The Tenth Symposium on Polar Science/Ordinary sessions: [OM] Polar Meteorology and Glaciology, Wed. 4 Dec. / 2F Auditorium, National Institute of Polar Researc

Study of human Wharton’s duct structure and its relationship with salivary flow

Of all major salivary glands, the human submandibular gland secretes the largest amount of saliva. Along with the sublingual duct, the main duct (Wharton’s duct) is known to open into the sublingual caruncula; however, reports regarding this common opening structure are scarce and details unclear. The structure of Wharton’s duct opening is quite different from that of parotid duct (Stensen’s duct) opening in its overall size and diameter despite what is commonly noted in text books. About 85% of sialolith occurrences in humans is in the submandibular gland and duct, which causes local pain during swallowing in most cases. The details of Wharton’s duct’s inner structure is relatively unknown, and further investigation is necessary to understand its special characteristics and clinical applications. In this study, we observed the inner structure of the ducts’ common opening area by scanning electron microscopy and confirmed a large number of blood vessels present in the connective tissue layer just under the epithelium. In addition, we confirmed the presence of smooth muscle in the same area using smooth muscle actin antibody. These structural findings suggest that Wharton’s duct itself is likely responsible for the regulation of salivary flow

X-ray fluorescence study of organic-inorganic polymer conversion into ceramics induced by ion irradiation

金沢大学理学部Changes to the local and electronic structures of phenyltriethoxysilane ~PTES! films when irradiated at room temperature with gold ion concentrations of 531014 to 2.531015 cm22 and with carbon ion concentrations of 531015 cm22 were studied using x-ray emission and photoelectron spectroscopies. The fluorescent ultrasoft silicon LII,III and carbon Ka x-ray emission spectra of unirradiated and irradiated PTES films were measured at the Advanced Light Source, and the Center for Advanced Microstructures and Devices. It is found that the PTES polymers that are exposed to ion doses higher than 531014 cm22 convert to Si:O:C ceramics. Annealing the irradiated PTES polymer films at 1000 °C segregates the carbon atoms into sp2-like clusters

Theoretical analysis of Auger electron spectra of 2nd periodic element containing substances,

金沢大学大学院自然科学研究科物質情報解

Valence XPS, IR, and C13 NMR spectral analysis of 6 polymers by quantum chemical calculations

Valence XPS (VXPS), IR, and C13 NMR spectra of 6 polymers (PE, PS, PMMA, PET, Nylon6, PVC) have been analyzed using the model oligomers from B3LYP/6-31+G(d,p) basis calculations in GAUSSIAN 09. We simulated VXPS of the polymers by the negative of the orbital energies of the ground electronic state at the geometry-optimization of the model oligomers. The simulated VXPS spectra by B3LYP/6-31+G(d,p) basis level were compared with simulated spectra by calculations of SAOP method of ADF program. Simulated IR, and C13 NMR spectra of polymers were obtained from the other SCF calculations of B3LYP/6-31+G(d,p) basis using atomic coordinates of the model molecules at the geometry optimization, in order to gain the vibrational frequencies and nuclear magnetic shielding tensors, respectively. We have clarified the electronic states of the polymers from the good accordance of simulated VXPS, IR, and C13 NMR spectra of polymer models molecules with the experimental ones of the polymers. © 2012 Elsevier B.V.

X-Ray Photoelectron Spectral Analysis for Carbon Allotropes,

金沢大学大学院自然科学研究科物質情報解