ソウセツ ショウニ BIPHENOTYPIC LEUKEMIA ノ ブンルイ ノ ココロミ

Seven hundred and forty-five newly diagnosed patients with acute leukemias between 1978 and 1990 were classified on the basis of immunological phenotype. The incidence of subclassification of acute leukemias in this study was as follows: 522 patients with ALL (70%), 139 patiens with ANLL (18%), 29 patients with biphenotypic leukemia, 8 patients with Ph1-positive acute leukemia, and 46 patients with infantile leukemia. ALLs were classified into common ALL (77%), T-ALL (15%), B-ALL (4%), and unclassified ALL (3%). Biphenotypic leukemias were categorized into 4 groups as follows; 1) common ALL with positive myelomonocytic antigen(s) (N=11), 2) unclassified ALL with positive myelomonocytic antigen(s) (N=5), 3) ANLL with positive B-lymphoid antigen(s) (N=4) and 4) acute leukemia with positive T-lymphoid and myeloid antigen(s). Among these 4 groups of biphenotypic leukemia, groups 2 and 4 disclosed a poor prognosis as was reported in infantile leukemia and Ph1-positive acute leukemia. Many questions regarding the biological and clinical aspects of biphenotypic leukemias stiil remain to be solved, but the precise and detailed sutailed subclassifications of acute leukemias will establish an appropriete strategy of therapy.journal articl

Observation of B0→D*-(5π)+, B+→D*-(4π)++ and B+→D̅*0 (5π)+

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サブバンド信号処理に基づくアダプティブアレーアンテナの開発

時空間信号処理を行うアダプティブアレーは、将来の高速移動体通信システムにおいて有効なマルチパス対策となるものと期待される反面、適応的に制御される重み係数の数が非常に多くなることから、ハードウェアへの実装にあたってその膨大な計算負荷が問題となる。このため、計算量の削減が実用化への鍵となっているということができる。本論文では、計算量の大幅な削減が可能なサブバンド信号処理を行うアダプティブアレーを、市販のDSP(Digital Signal Processor)を用いてハードウェアに実装した。そこでまず、必要な信号処理の各部に必要なDSPの数を示すことにより、ハードウェア規模を明らかにした。次に、電波暗室内において２波の簡単なマルチパス環境を構成し、その下で基本性能の実証実験を行って、理論値とほぼ一致する性能が得られることを確認した。journal articl

On the technical properties of the Carovigno stone from Apulia (Italy): physical characterization and decay effects by means of experimental ageing tests

Apulia (southern Italy) is typified by widespread outcrops of rocks exploited in the last centuries in historical architectures and religious constructions, as building and decorative stone. Today, as in the past, these stones represent an important source for region economy and prestige, due to their uses for modern works, restoration of local medieval churches and also exporting abroad. Among these, a noteworthy and still poorly known material is the Carovigno stone. In this paper, firstly an overall view on the, mineralogical and petrophysical features of the stone was reached through a multianalytical approach based on several investigation procedures and techniques, including ultrasonic test, X-ray diffractometry, scanning electron microscopy, optical microscopy, mercury intrusion porosimetry. In order to simulate decay phenomena, the Carovigno stone samples were processed to three different ageing tests: cycles of thermal treatments at different high temperatures, cycles of heatingâcooling and cycles of exposure to decahydrate sodium sulphate and sodium chloride saline solutions. During and after each ageing processes, mineralogical transformations and petrophysical changes were evaluated. Results suggested that the Carovigno stone is a fine-grained calcarenite, pure or nearly pure, characterized by high porosity and, consequently, very notable thermal stress resistance. Conversely, the type and amount of porosity causes stone predisposition to salt crystallization decay