Sheet Dependence on Superconducting Gap in Oxygen-Deficient Iron-based Oxypnictide Superconductors NdFeAs0.85

Photoemission spectroscopy with low-energy tunable photons on oxygen-deficient iron-based oxypnictide superconductors NdFeAsO0.85 (Tc=52K) reveals a distinct photon-energy dependence of the electronic structure near the Fermi level (EF). A clear shift of the leading-edge can be observed in the superconducting states with 9.5 eV photons, while a clear Fermi cutoff with little leading-edge shift can be observed with 6.0 eV photons. The results are indicative of the superconducting gap opening not on the hole-like ones around Gamma (0,0) point but on the electron-like sheets around M(pi,pi) point.Comment: 8 pages, 3 figure

松本歯科大学病院における小児全身麻酔下集中歯科治療の検討 : 過去11年間の環境要因の変遷について

We investigated the actual child-rearing environment, considering factors such as hygiene training, among 177 children (102 boys, 75 girls) ranging from 1 year and 9 months to 7 years and 2 months in age who underwent intensive dental treatment under general anesthesia in the Department of Pediatric Dentistry, Matsumoto Dental University Hospital between January 1990 and December 2000. The following results were obtained. 1) The annual number of patients slightly increased between 1992 and 1994. Thereafter, the annual number of patients decreased slightly each year. 2) The mean age attreatmentwas 3 years and 7 months (44.5±12.9 months). 3) Concerning the regional distribution, more than 50% of the children came from Nagano Prefecture areas other than Shiojiri City, where our university is located. 4) With respect to feeding methods during infancy, most children were breast fed or mixed breast and bottle fed. Furthermore, any feeding irregularity was noted. 5) The mean interval from birth until the start of weaning was 7.5±4.1 months. The mean interval until completion of weaning was 16.0±6.3 months. 6) 95.5% of the children habitually brushed their teeth. The frequency of tooth brushing was "once a day" or "sometimes" in 69.5% of the children. 7) Overall, 46.9% of the children had received fluoride application

von Recklinghausen病の1例

今回,著者らは齲蝕を主訴としたvon Recklinghausen病の4歳6か月女児の歯科治療を経験したので報告する。1.頸部には広範囲にわたるカフェオレ斑がみられ後頸部が膨隆していた。2.頸椎脊柱管内には腫瘍が認められ,環軸椎亜脱臼により第2 ,3,4頸椎で後方凸の彎曲変形が認められた。3.患児のHellmanの咬合発育段階はIIA期に相当し,臼歯部では齲蝕による崩壊が著しく,前歯部で過蓋咬合を呈した。4.手根骨の化骨状態は骨核数が4個認められ,暦年齢とほぼ一致していた。5.側面頭部エックス線規格写真分析では異常はみられなかった。6.歯科治療に対し協力状態が悪く,頭位を安定にすることが不可能であるために,全身麻酔下で集中歯科治療を行った