21 Result(s)

Article

A case of Wernicke encephalopathy arising in the early stage after the start of hemodialysis

Wernicke encephalopathy (WE) resulting from vitamin B1 (VB1) deficiency is commonly regarded as being associated with a high alcohol intake; however, recently many non-alcohol-related cases have been reported....

Nayuta Seto, Mayumi Ishida, Tatsuya Hamano, Hideki Onishi… in CEN Case Reports (2022)

Article

Macular vessel density in untreated normal tension glaucoma with a hemifield defect

To investigate macular vessel density (MVD) and structural alterations in untreated normal tension glaucoma (NTG) with a hemifield defect (HFD) and to compare these with the findings in healthy eyes.

Nozomu Uchida, Kyoko Ishida, Ayako Anraku… in Japanese Journal of Ophthalmology (2019)

Article

Fabrication of c-axis oriented polycrystalline ZnO by using a rotating magnetic field and following sintering

We succeeded in fabricating c-axis (00l) oriented ZnO ceramics by using a rotating magnetic field and a subsequent sintering treatment. The degree of orientation in the green compact was about 0.5 along (00l) on ...

Satoshi Tanaka, Atsushi Makiya, Zenji Kato, Nozomu Uchida… in Journal of Materials Research (2006)

Article

Characterization of processing pores and their relevance to the strength in alumina ceramics

Characterization of bulk defects was successfully accomplished in alumina with a transmission optical microscope. The characterization technique used is based on the fact that many ceramics are essentially tra...

Yao Zhang, Mineyuki Inoue, Nozomu Uchida, Keizo Uematsu in Journal of Materials Research (1999)

Article

Binder surface segregation during spray drying of ceramic slurry

Spray-dried granules were observed by a laser microscopy with the immersion liquid technique. The binder distribution in the granules was analyzed from light intensity profiles of the images. The results showe...

Yao Zhang, **ao**a Tang, Nozomu Uchida, Keizo Uematsu in Journal of Materials Research (1998)

Chapter

Effect of Packing Structure of Powder Particles in A Ceramic Green Body on Microstructure Development During Densification

Properties of virtually all ceramics are severely degraded by the presence of defects, which develop from powder packing irregularities in green bodies during the densification process.^1–3 To produce good ceramic...

Keizo Uematsu, Nozomu Uchida in Ceramic Microstructures (1998)

Article

Change of internal/pore structure in alumina green body during initial sintering

A novel characterization method was applied to study the morphological changes of large pores in a ceramic green body during the early stage of densification at 1100°C for 1–64 h. Large processing pores were p...

**-Young Kim, Masayori Miyashita, Nozomu Uchida… in Journal of Materials Science (1992)

Article

Filter cake forming and hot isostatic pressing for TZP-dispersed hydroxyapatite composite

The combination of a filter cake forming process and hot isostatic pressing was applied to prepare hydroxyapatite composites containing dispersed tetragonal zirconia polycrystal (TZP) with high strength and to...

Masaki Takagi, Masahiro Mochida… in Journal of Materials Science: Materials in… (1992)

Chapter and Conference Paper

Direct Observation on the Pore Elimination During Hip

Changes of pore size and shape during encapsulation HIP was examined directly with the novel liquid immersion technique, which can reveal great details of micro-structure and characterize flaw-forming defects ...

**-Young Kim, Nozomu Uchida, Zenji Kato… in Hot Isostatic Pressing— Theory and Applica… (1992)

Chapter and Conference Paper

Effect of Processing on the Micro-Structure and Properties of Hot Isostatically Pressed Alumina Added with Rare-Earth Elements

To control the formation of defects and development of uniform microstructure in powder compact during hot isostatic pressing, the effects of solvent and drying method were examined. Freeze dried powder mixtur...

Masayasu Komuro, Nozomu Uchida, Zenji Kato… in Hot Isostatic Pressing— Theory and Applica… (1992)

Article

Effect of Applied Pressure of Hip on the Removal of Processing Void in Alumina Ceramics and the Resultant Improvement of Mechanical Property

Alumina ceramics prepared at various processing conditions were subjected to hot isostatic pressing (HIP) to remove processing-originated voids. Transmission optical microscope was used for characterizing void...

Masayori Miyashita, **-Young Kim, Nozomu Uchida… in MRS Online Proceedings Library (1991)

Article

Direct Evidence on the Elimination of Pore by the Applied Pressure in Hot Isostatic Pressing of Alumina

Removal of natural pore during capsule hot isostatic pressing (HIP) and normal sintering were examined directly with the novel liquid immersion technique, which can reveal details of micro-structure and charac...

Seiki Fukai, Nozomu Uchida, Zenji Kato, Keizo Uematsu in MRS Online Proceedings Library (1991)

Article

Direct observation of internal structure in spray-dried yttria-doped zirconia granule

Spray-dried yttria-doped zirconia granules were made transparent by immersion in a liquid and the internal structure was characterized using an optical microscope. This unique technique was found to be applica...

**-Young Kim, Masahiro Inoue, Zenji Kato, Nozomu Uchida… in Journal of Materials Science (1991)

Article

Hydrogen post-etching effect on CVD diamond film

Nozomu Uchida, Tsutomu Kurita, Keizo Uematsu… in Journal of Materials Science Letters (1990)

Article

Thermochemical etching effect on CVD diamond film in an oxygen atmosphere

Nozomu Uchida, Tsutomu Kurita, Keizo Uematsu… in Journal of Materials Science Letters (1990)

Chapter

Development of Direct Observation Method for Internal Structure in Silicon Nitride Granule and Green Body

Silicon nitride granule and green body were made transparent by immersion liquid which have a refractive index close to that of silicon nitride. Their internal structures were examined directly by means of opt...

Masahiro Inoue, **-Young Kim, Zenji Kato… in Transactions of the Materials Research Soc… (1990)

Article

Orientation of ZnO grains by pyroelectric charge-electrical field interaction

Keizo Uematsu, Haruo Morohashi, Tadahiko Morimoto… in Journal of Materials Science Letters (1989)