Distribution and Endocrine Morphology of Polypeptide YY (PYY) Containing Cells in the Human Gut

Using human materials, the distribution of PYY containing cells was determined by immunocytochemical methods and discussion was made on their morphological endocrinology. PYY cells were fairly numerous in the lower gastrointestinal tract of man, particularly in the colon and rectum. The cells were also present in the pancreas and duodenum but quite rarely. PYY cells were not observed at all in the lower part of the esophagus, stomach and gall bladder. Their peculiar and characteristic shapes as well as distribution suggest that PYY may have some action (probably specific) on the function of the distal gastrointestinal tract

Scanning tunneling microscopy of Dy@C82 and Dy@C60 adsorbed on Si(111)-(7x7) surfaces

Dy@C-82 and Dy@C-60 adsorbed on Si(111)-(7x7) surface are investigated by scanning tunneling microscopy (STM) at 295 K. The Dy@C-82 molecules in the first layer are adsorbed on the Si(111)-(7x7) surface without formation of islands and nucleation, and the internal structure of the Dy@C-82 molecule is first observed on the surface at 295 K. The average heights of the Dy@C-82 molecules in the first and second layers are estimated to be 7.2 and 10.8 A, respectively, by STM. These results suggest strong interactions between the Si atoms and the Dy@C-82 molecules in the first layer. The STM image reveals that the Dy@C-60 molecule is nearly spherical, showing that the metal endohedral C-60 possesses a cage-form structure. </p

Fabrication and characterization of field-effect transistor device with C_2v isomer of Pr@C₈₂

A field-effect transistor (FET) device was fabricated with thin films of C2v isomer of Pr@C82. This device apparently showed n-channel normally-on type FET properties, where non-zero current was observed at gate-source voltage of 0 VGS, of 0V. Normally off FET properties were observed by subtraction of the non-zero current from the drain current.Thus the normally on properties are ascribed to the high bulk current caused by the small energy gap ≈0.3 eV. The field-effect mobility for this FET was 1.5 x 10-4 cm2 V-1 s-1 at 320 K, being comparable to those of other endohedral metallofullerene FET devices.</p

Video mosaicing for curved documents by structure from motion

SIGGRAPH '06 : The 33rd International Conference and Exhibition on Computer Graphics and Interactive Techniques , Jul 30-Aug 3, 2006 , Boston, MA, US

A Programming Language for Processor Based Embedded Systems

Since embedded software is becoming more and more complex, software reuse is an important issue in processorbased embedded system design. However, many embedded programs can not be reused on various kinds of architectures because the correctness of programs strongly depends on both compilers and processor architectures. In order to overcome the limited reusability, we have proposed an embeddedprogramming language, called Valen-C. In ValenC, programmers can explicitly specify the required bit length of each variable in programs. Valen-C enables programs to be independent of processor architectures and can expand the opportunity of reusing the programs. In this paper, the effectiveness of Valen-C is discussed by clarifying the difference of it from existing languages, and the syntax and semantics of Valen-C are described. The structure of the Valen-C retargetable compiler which we have developed and how to preserve the correctness of programs are also described. 1. Introduction In embed..

High-resolution Video Mosaicing for Documents and Photos by Estimating Camera Motion

Recently, document and photograph digitization from a paper is very important for digital archiving and personal data transmission through the internet. To realize easy and high quality digitization of documents and photographs, we propose a novel digitization method that uses a movie captured by a hand-held camera. In our method, first, 6-DOF(Degree Of Freedom) position and posture parameters of the mobile camera are estimated in each frame by tracking image features automatically. Next, re-appearing feature points in the image sequence are detected and stitched for minimizing accumulated estimation errors. Finally, all the images are merged as a high-resolution mosaic image using the optimized parameters. Experiments have successfully demonstrated the feasibility of the proposed method. Our prototype system can acquire initial estimates of extrinsic camera parameters in real-time with capturing images