155 research outputs found
A study of topological vertexing for heavy quark tagging
We compare heavy quark tagging and anti-tagging efficiencies for vertex
detectors with different inner raddi using the topological vertex technique
developed at the SLC/SLD experiment. Charm tagging benefits by going to very
small inner radii.Comment: 5 pages 3 figures Latex, Presented at the 5th International Linear
Collider Workshop (LCWS2000
LCD ROOT Simulation and Analysis Tools
The North American Linear Collider Detector group has developed a simulation
program package based on the ROOT system. The package consists of Fast
simulation, the reconstruction of the Full simulated data, and physics analysis
utilities.Comment: 5 pages 2 figure Latex, Presented at the 5th International Linear
Collider Workshop (LCWS2000
Current Performance of the SLD VXD3
During 1996, the SLD collaboration completed construction and began operation
of a new charge-coupled device (CCD) vertex detector (VXD3). Since then, its
performance has been studied in detail and a new topological vertexing
technique has been developed. In this paper, we discuss the design of VXD3,
procedures for aligning it, and the tracking and vertexing improvements that
have led to its world-record performance.Comment: 17 pages latex including 10 figures, to appear in Proceedings
Vertex99 Worksho
イネ ニオケル コメヌカ タンパクシツ ノ プロテオミクス
Rice bran has wide potential usage as a source of valuable nutrients, though little is known about its protein composition. Here, we identified rice bran proteins by using proteomic analysis. After extraction of crude protein from the bran of Koshihikari brown rice grains, we separated proteins by 2-D PAGE and analyzed 41 protein spots. N-terminal amino acid sequences were determined for 23 spots, 21 proteins of known function and 2 could not be identified by BLAST searching. For the other 18 spots, the N-terminal amino acids could not be determined. Of these, 4 were identified by using LC-MS/MS. After in-solution digestion of bran samples from Koshihikari and TN-1, we looked for differences in the bran proteins between these cultivars. A total of 83 proteins were detected and classified into 10 categories: storage proteins, carbohydrate metabolic enzymes, proteins related to synthesis and proteolysis, embryo proteins, stress-related proteins, regulatory proteins, antioxidant proteins, redox-related proteins, lipid biosynthesis proteins, and energy-related proteins. In the identified proteins, antioxidant proteins and redox-related proteins, such as peroxiredoxin and glyoxalase, respectively, considered to be unique to bran among seed proteins. Such proteins may play important roles as antioxidants for protecting cells in the embryo and aleurone layer from the stress of desiccation
Modeling carbom dynamics in an arid forest ecosystem
金沢大学大学院自然科学研究科大阪大学筑波大学成蹊大学信州大学2005 International Symposium on Environmental Mornitoring in East Asia -Remote Sensing and Forests-,Hosted The EMEA Project, Kanazawa University 21st=Century COE Program -Environmental Monitoring and Predicition of Long- and Short- Term Dynamics of Pan-Japan Sea Area- ,予稿集, EMEA 2005 in Kanazawa, 国際学術研究公開シンポジウム『東アジアの環境モニタリング』-リモートセンシングと森林-,年月日:200511月28日~29日, 場所:KKRホテル金沢, 金沢大学自然科学研究科, 主催:金沢大学EMEAプロジェクト, 共催:金沢大学21世紀COEプログラム「環日本海域の環境変動と長期・短期変動予測
Vacuum phenomenon of sacroiliac joint
Study Design: A radiologic study of sacropelvic morphology and vacuum phenomenon of sacroiliac joint in subjects unrelated to low back pain.
Purpose: The aim of this study is to describe the relationship between sacropelvic morphology and vacuum phenomenon of the sacroiliac joint.
Overview of Literature: Lumbopelvic alignment and sacropelvic morphology are associated with the pathomechanisms of various spinal disorders. The vacuum phenomena of the sacroiliac joint (SJVP) are often observed in clinical practice, but the relationships between these phenomena and sacropelvic morphology have not been investigated. This study examined the prevalence of SJVP in computed tomography (CT) images and the relationship between sacropelvic morphology and SJVP.
Methods: We analyzed multiplanar CT images of 93 subjects (59 men, 34 women). Pelvic incidence (PI), pelvic tilt (PT), sacral slope (SS), and lumbar lordosis (LL) were measured using the three-dimensional reconstruction method. The prevalence of SJVP in multiplanar CT images were reviewed. Roland-Morris Disability Questionnaire (RDQ) scores and the modified Japanese Orthopedic Association (JOA) score, which focuses on subjective symptoms and restriction of activities of daily living, were also obtained from all the subjects.
Results: Thirty-six of the 93 subjects had SJVP (39%), with marked female predominance (91% women, 8.5% men). Men with SJVP had significantly lower PI than men without SJVP (35.1° vs. 46.3°, p<0.05). There was no correlation between SJVP and the modified JOA or RDQ scores.
Conclusions: These data suggest that differences in sacropelvic morphology can influence the biomechanical environment and contribute to SJVP in men. Presence of SJVP did not affect JOA or RDQ scores
Myelopathy due to C2 Spondylolysis
We report a case with compression myelopathy due to proliferative changes around the C2 pars defects without instability. A 69-year-old man presented with progressive clumsy hands and spastic gait. Plain radiographs showed bilateral spondylolysis (pars defects) at C2 and fusion between C2 and C3 spinous processes. Dynamic views revealed mobility through the pars defects, but there was no apparent instability. Computed tomography showed proliferative changes at the pars defects, which protruded into spinal canal. On magnetic resonance imaging, the spinal cord was compressed and intramedullary high signal change was found. A diagnosis of compression myelopathy due to proliferative changes around the C2 pars defects was made. We performed posterior decompression. Postoperatively, symptoms have been alleviated and images revealed sufficient decompression and no apparent instability. In patients with the cervical spondylolysis, myelopathy caused by instability or slippage have been periodically reported. The present case involving C2 spondylolysis is extremely rare
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