944 research outputs found

    \u3ci\u3eIn re Mahurkar\u3c/i\u3e: The Federal Circuit\u27s Misapplied Focus on Commercialization in On Sale Bar Analysis

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    In In re Mahurkar Double Lumen Hemodialysis Catheter Patent Litigation, the Federal Circuit held that a sham sale of an invention did not implicate the statutory on sale bar, which makes unpatentable any invention placed on sale more than one year prior to the filing of a patent application. This Note analyzes the Mahurkar decision\u27s focus on the lack of commercialization of the invention in finding that a valid U.C.C. sale of an invention already reduced to practice does not implicate the on sale bar. It argues that under traditional on sale bar standards, a commercialization analysis is only necessary for the purposes of determining the degree of development of the invention and whether the sale was for experimentation purposes. It concludes by highlighting the inconsistency the Federal Circuit has created with this newly-developed emphasis on commercialization, necessitating a clarification of the policies and guidelines for proper application of the on sale bar

    Structure and magnetism in nanocrystalline Ca(La)B6_6 films

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    Nanocrystalline films of La-doped CaB6_6 have been fabricated by using a rf-magnetron sputtering. Lattice expansion of up to 6% with respect to the bulk value was observed along the direction perpendicular to the film plane, which arises from the trapping of Ar gas into the film. Large ferromagnetic moment of 3 ~ 4 Bohr magneton per La has been observed in some La-doped films only when the lattice expansion rate is larger than 2.5%.Comment: 2 pages, 2 figures, to appear in J. Magn. Magn. Mate

    Kondo effect in CeXc_{c} (Xc_{c}=S, Se, Te) studied by electrical resistivity under high pressure

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    We have measured the electrical resistivity of cerium monochalcogenices, CeS, CeSe, and CeTe, under high pressures up to 8 GPa. Pressure dependences of the antiferromagnetic ordering temperature TNT_{N}, crystal field splitting, and the lnT\ln T anomaly of the Kondo effect have been studied to cover the whole region from the magnetic ordering regime at low pressure to the Fermi liquid regime at high pressure. TNT_{N} initially increases with increasing pressure, and starts to decrease at high pressure as expected from the Doniach's diagram. Simultaneously, the lnT\ln T behavior in the resistivity is enhanced, indicating the enhancement of the Kondo effect by pressure. It is also characteristic in CeXc_{c} that the crystal field splitting rapidly decreases at a common rate of 12.2-12.2 K/GPa. This leads to the increase in the degeneracy of the ff state and further enhancement of the Kondo effect. It is shown that the pressure dependent degeneracy of the ff state is a key factor to understand the pressure dependence of TNT_{N}, Kondo effect, magnetoresistance, and the peak structure in the temperature dependence of resistivity.Comment: 9 pages, 5 figures, accepted for publication in J. Phys. Soc. Jp

    Novel phase transition and the pressure effect in YbFe2Al10-type CeT2Al10 (T=Fe, Ru, Os)

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    We have succeeded in growing single crystals of orthorhombic CeT2Al10 (T=Fe, Ru, Os) by Al self-flux method for the first time, and measured the electrical resistivity at pressures up to 8 GPa, the magnetic susceptibility and specific heat at ambient pressure. These results indicate that CeT2Al10 belongs to the heavy fermion compounds. CeRu2Al10 and CeOs2Al10 show a similar phase transition at T0 = 27.3 and 28.7 K, respectively. The temperature dependences in the ordered phases are well described by the thermally activated form, suggesting that partial gap opens over the Fermi surfaces below T0. When pressure is applied to CeRu2Al10, T0 disappears suddenly between 3 and 4 GPa, and CeRu2Al10 turns into a Kondo insulator, followed by a metal. The similarity of CeT2Al10 under respective pressures suggests a scaling relation by some parameter controlling the unusual physics in these compounds.Comment: 9 pages, 5 figure

    Development of a High-performance Optical System and Fluorescent Converters for High-resolution Neutron Imaging

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    AbstractTwo novel devices for use in neutron imaging technique are introduced. The first one is a high-performance optical lens for video camera systems. The lens system has a magnification of 1:1 and an F value of 3. The optical resolution is less than 5 μm. The second device is a high-resolution fluorescent plate that converts neutrons into visible light. The fluorescent converter material consists of a mixture of 6LiF and ZnS(Ag) fine powder, and the thickness of the converter is material is as little as 15 μm. The surface of the plate is coated with a 1 μm-thick gadolinium oxide layer. This layer is optically transparent and acts as an electron emitter for neutron detection. Our preliminary results show that the developed optical lens and fluorescent converter plates are very promising for high-resolution neutron imaging

    Ionization Source of a Minor-axis Cloud in the Outer Halo of M82

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    The M82 `cap' is a gas cloud at a projected radius of 11.6 kpc along the minor axis of this well known superwind source. The cap has been detected in optical line emission and X-ray emission and therefore provides an important probe of the wind energetics. In order to investigate the ionization source of the cap, we observed it with the Kyoto3DII Fabry-Perot instrument mounted on the Subaru Telescope. Deep continuum, Ha, [NII]6583/Ha, and [SII]6716,6731/Ha maps were obtained with sub-arcsecond resolution. The superior spatial resolution compared to earlier studies reveals a number of bright Ha emitting clouds within the cap. The emission line widths (< 100 km s^-1 FWHM) and line ratios in the newly identified knots are most reasonably explained by slow to moderate shocks velocities (v_shock = 40--80 km s^-1) driven by a fast wind into dense clouds. The momentum input from the M82 nuclear starburst region is enough to produce the observed shock. Consequently, earlier claims of photoionization by the central starburst are ruled out because they cannot explain the observed fluxes of the densest knots unless the UV escape fraction is very high (f_esc > 60%), i.e., an order of magnitude higher than observed in dwarf galaxies to date. Using these results, we discuss the evolutionary history of the M82 superwind. Future UV/X-ray surveys are expected to confirm that the temperature of the gas is consistent with our moderate shock model.Comment: 7 pages, 5 figures, 2 tables; Accepted for publication in Ap

    Autoimmune Pancreatitis Accompanied by Cholecystitis, Periaortitis and Pseudotumors of the Liver

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    A variety of extrapancreatic lesions have been associated with autoimmune pancreatitis (AIP), and these lesions can be difficult to diagnose. We report a patient referred to Shizuoka Cancer Center with the diagnosis of a possible biliary carcinoma with liver metastasis who was shown to have AIP accompanied by pseudotumors of liver. Clinical imaging revealed diffuse enlargement of the head of the pancreas with irregular narrowing of the main pancreatic duct and inferior common bile duct, multiple liver masses, mediastinal lymphadenopathy, and thickening of the wall of the gallbladder and abdominal aorta. Cytology and biopsy from the pancreaticobiliary tract was negative for malignancy. Serum carcinoembryonic antigen (CEA) and carbohydrate antigen (CA19-9) levels were in the normal range, but soluble interleukin 2 receptor (sIL2R), IgG4 and antinuclear antibody were abnormally high (sIL2R: 2,550 U/ml; IgG4: 764 mg/dl). Corticosteroid therapy was effective and these abnormal findings all improved. This case demonstrates the clinical importance of AIP accompanied by other systemic disorders in the differential diagnosis of patients with a pancreatic mass lesion
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