952 research outputs found
Adaptive Signal Selection Control Based on Adaptive FF Control Scheme and Its Applications to Sound Selection Systems
Developing a smart tourism destination through social big data : multiple case studies from Wakayama Prefecture
A visual feedback system for micromanipulation with stereoscopic microscope
A stereoscopic microscope is widely used in a micromanipulation such as to operate genes and to inspect integration circuits. As in these tasks the micromanipulation is handled and makes too heavy burden to operators, it is desirable to perform the micromanipulation automatically. In this paper, we propose a visual feedback system for micromanipulation with stereoscopic microscope. This system takes less time to control the manipulator by reducing searching area to detect an object </p
Dry Small Pleural Dissemination of Adenocarcinoma of the Lung Preoperatively Detected by PET/CT: A Report of Two Cases
Dry pleural dissemination in non-small cell lung cancer, defined as solid pleural metastasis of lung
cancer without pleural eff usion, is a condition occurring in T4 lung cancer. Positron emission tomography (PET) has been reported to be useful for the diagnosis and staging of lung cancer. It has been reported that positive findings on PET scans of indeterminate pleural abnormalities at computed tomography (CT) are sensitive to malignancy. We encountered two cases of dry small pleural dissemination of adenocarcinoma of the lung preoperatively detected by PET/CT. A 75-year-old man and a 66-year-old man underwent CT scan, which demonstrated solitary tumor in the lung, an enlarged mediastinal lymph node, and a small pleural nodule less than 10 mm in size, all of which were positive findings on the fluorine 18 fluorodeoxyglucose (FDG) PET portion of an integrated PET/CT. Both patients underwent thoracoscopic biopsy of the dry pleural nodule revealing dissemination of
adenocarcinoma of the lung (T4). Whereas histological thoracoscopic diagnosis remains mandatory before planning treatment, our cases may suggest that PET/CT will be useful as a screening modality for dry pleural dissemination of lung cancer.</p
Education for Working Youths in Niigata Prefecture after the World War Ⅱ : Relationship between Equality of Educational Opportunity and Social Education
Diagnosis of Rejection in the Allografted Rat Lung: Using Monoclonal Antibodies to T Cell Subsets for Immunologic Monitoring
Early diagnosis of rejection and timely immunosuppression are absolutely important in clinical lung transplantation. We studied surface markers of peripheral blood lymphocytes (PBL), graft infiltrating lymphocytes (GIF) and bronchoalveolar lavage fluid (BALF) in a rat using flow cytometric monitoring to diagnose rejection. Left lung transplantation was performed on Brown Norway (BN) rats and Lewis (LEW) rats in the following groups; Group 1: LEW-LEW (isograft), Group 2: BN-LEW (allograft; no immunosuppression), Group 3: BN-LEW (allograft; treated with Cyclosporine A at a dose of 15 mg/kg/day i.m.). In each group, rats were killed 3, 5, 7 days postoperatively (n = 6 on each day). Monoclonal antibodies investigated in this study were W3/25 (anti-helper T lymphocyte), OX8 (anti-suppressor/cytotoxic T lymphocyte), and OX39 (anti-interleukin 2 receptor). Histological classification of rejection in Group 2 showed vascular phase at 3 days, alveolar phase at 5 days, and destructive phase at 7 days, respectively. No evidence of rejection was found in Group 1 or 3. In Group 2, W3/25 positive cell proportion in GIL and BALF significantly decreased as the rejection progressed, but OX8 positive and OX39 positive cell proportion increases were significantly greater than in Groups 1 and 3 as the rejection progressed. These results lead us to speculate that the studies of T cell subsets in GIL and BALF lymphocytes are useful for diagnosis of rejection in lung transplantation.</p
Rapid Formation of Saturn after Jupiter Completion
We have investigated Saturn's core formation at a radial pressure maximum in
a protoplanetary disk, which is created by gap opening by Jupiter. A core
formed via planetesimal accretion induces the fragmentation of surrounding
planetesimals, which generally inhibits further growth of the core by removal
of the resulting fragments due to radial drift caused by gas drag. However, the
emergence of the pressure maximum halts the drift of the fragments, while their
orbital eccentricities and inclinations are efficiently damped by gas drag. As
a result, the core of Saturn rapidly grows via accretion of the fragments near
the pressure maximum. We have found that in the minimum-mass solar nebula,
kilometer sized planetesimals can produce a core exceeding 10 Earth masses
within two million years. Since Jupiter may not have undergone significant type
II inward migration, it is likely that Jupiter's formation was completed when
the local disk mass has already decayed to a value comparable to or less than
Jovian mass. The expected rapid growth of Saturn's core on a timescale
comparable to or shorter than observationally inferred disk lifetime enables
Saturn to acquire the current amount of envelope gas before the disk gas is
completely depleted. The high heat energy release rate onto the core surface
due to the rapid accretion of the fragments delays onset of runaway gas
accretion until the core mass becomes somewhat larger than that of Jupiter,
which is consistent with the estimate based on interior modeling. Therefore,
the rapid formation of Saturn induced by gap opening of Jupiter can account for
the formation of multiple gas giants (Jupiter and Saturn) without significant
inward migration and larger core mass of Saturn than that of Jupiter.Comment: Accepted for publication in Ap
- …