酸性尿酸アンモニウム結石を伴ったEncrusted cystitisの1例

88歳男, 間質性肺炎に対し他院で治療中血膿尿を認め紹介転院した.KUB・CT・膀胱鏡にて膀胱内面ほぼ3分の2に石灰化を認め病理所見にてbacterial colonyとそれに伴う炎症細胞の浸潤・石灰化を認めた.またその際の結石分析で酸性尿酸アンモニウム結石と診断されたWe present a case of encrusted cystitis with ammonium acid urate calculi. An 88-year-old man was referred to our hospital to determine the cause of hematopyuria. He was a patient at another hospital for treatment of interstitial pneumonia with predonisolone. After admission to our hospital, kidney, ureter, bladder X-ray, computed togography and cystoscopy revealed calcification of about two-thirds of the mucosa of the bladder, and biopsy of the bladder revealed bacterial colonies with inflammation and calcification. Calculographic analysis revealed ammonium acid urate calculi. After treatment with antibiotics and irrigation with solita T1, an acidic solution of pH 3.5-6.5, inflammation and calcification were significantly reduced

1,4-Bis[(2,6-dimethoxy­phen­yl)ethyn­yl]benzene

The title compound, C26H22O4, is a derivative of 1,4-bis­(phenyl­ethyn­yl)benzene substituted by four meth­oxy groups at the terminal benzene rings. The asymmetric unit consists of two half-molecules; one centrosymmetric molecule is planar but the other is non-planar, with dihedral angles of 67.7 (1)° between the central benzene ring and the terminal benzene rings. In the crystal structure, mol­ecules form a zigzag mol­ecular network due to π–π [the inter­planar and centroid–centroid distances between the benzene rings are 3.50 (1) and 3.57 (1) Å, respectively] and C—H⋯π inter­actions (2.75 Å). Introduction of the four meth­oxy groups results in the supra­molecular architecture

下顎犬歯236歯の根管形態についての検討

To achieve the effect of mechanical preparation of root canals, transparent specimens of extracted 236 mandibular canines were investigated for canal configuration, thickness and curvature of the root canal, condition of any accessory canals, and location of the apical foramen. Fewer than 25% of the specimens showed accessory canals that were impossible to clean mechanically. The majority of the lateral branches were 0.15mm<and≦0.20mm. Although apical foramina located away from the apex were observed in 18% of the mandibular canines. All apical foramina were located within 0.5mm of the apex. Data on the thickness of the root and main canal in the apical portion and curvature of the root canal suggest that for adequate apical preparation, a #60 file must be able to reach the apical constriction

Control of Rabi-splitting energies of exciton polaritons in CuI microcavities

We have investigated the active-layer-thickness dependence of exciton-photon interactions in CuI microcavities. The active layer thickness was changed from λ/2 to 2λ, where λ corresponds to an effective resonant wavelength of the lowest-lying exciton. In the CuI active layer, thermal strain removes the degeneracy of the heavy-hole (HH) and light-hole (LH) excitons at the Γ point. Angle-resolved reflectance spectra measured at 10 K demonstrate the strong coupling between the HH and LH excitons and cavity photon, resulting in the formation of three cavity-polariton branches: the lower, middle, and upper polariton branches. The energies of the three cavity-polariton modes as a function of incidence angle are reasonably explained using a phenomenological Hamiltonian to describe the exciton-photon strong coupling. It is found that the interaction energies of the cavity-polariton modes, the so-called vacuum Rabi-splitting energies, are systematically controlled from 29 (50) to 48 (84) meV for the LH (HH) exciton by changing the active layer thickness from λ/2 to 2λ. The active-layer-thickness dependence of the Rabi-splitting energies is semi-quantitatively explained by a simple model

Photon-field-shape effects on Rabi splitting energies in CuCl microcavities

We have investigated the photon-field-shape effects on Rabi splitting energies in CuCl microcavities with HfO2/SiO2 distributed Bragg reflectors (DBRs). The CuCl active layer was prepared by vacuum deposition, while HfO2 and SiO2 layers were prepared by rf magnetron sputtering. The photon-field shape was tuned to a node-type or an antinode-type by changing the order of the refractive indices in the DBR. In order to control of the Rabi splitting energies, the active-layer thickness was changed from λ/12 to 9λ/20. In angle-resolved reflectance spectra at 10 K, three cavity polaritons resulting from the strong coupling between the Z3 and Z1,2 excitons and cavity photon were clearly detected. We estimated the energies of the exciton-photon interaction, the so-called vacuum Rabi splitting energies, from the analysis of the cavity polariton dispersions using a phenomenological Hamiltonian for the strong exciton-photon coupling. The active-layer-thickness dependence of the Rabi splitting energies are explained by a semi-quantitative analysis taking account of the overlap between the exciton and photon-field wave functions. We have demonstrated that the photon-field shape drastically affects the active-layer-thickness dependence of the Rabi splitting energies