101
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Reinhardt F, Beckhoff B, Eba H, Kanngiesser B, Kolbe M, Mizusawa M, Müller M, Pollakowski B, Sakurai K, Ulm G. Evaluation of High-Resolution X-ray Absorption and Emission Spectroscopy for the Chemical Speciation of Binary Titanium Compounds. Anal Chem 2009; 81:1770-6. [DOI: 10.1021/ac8018069] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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102
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Jerab M, Sakurai K. Gas-deposition growth of ytterbium nanoparticles. Acta Crystallogr A 2008. [DOI: 10.1107/s010876730808210x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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103
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Mizusawa M, Sakurai K, Yasuhiko I. Micro and quick reflectometry with high-energy white synchrotron X-rays. Acta Crystallogr A 2008. [DOI: 10.1107/s0108767308082305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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104
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Sakurai K, Mizusawa M. Realtime imaging in X-ray fluorescence and X-ray diffraction. Acta Crystallogr A 2008. [DOI: 10.1107/s0108767308094142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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105
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Matsushita T, Arakawa E, Niwa Y, Inada Y, Ishii M, Sakurai K, Nomura M, Hirano K. Quick X-ray reflectometry in simultaneous multiwavelength dispersive mode. Acta Crystallogr A 2008. [DOI: 10.1107/s0108767308099522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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106
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Naumov P, Sakurai K, Tanaka M, Hara H. Observation of aminyl radical during photo-induced Orton rearrangement in single-crystalline state. Acta Crystallogr A 2008. [DOI: 10.1107/s010876730808639x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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107
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Sakurai K, Harada K, Shimada H, Hayashi T. Roles of heme-6-propionate side chain in monooxygenase cytochrome P450cam. Acta Crystallogr A 2008. [DOI: 10.1107/s010876730809082x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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108
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Tanaka A, Kodaira Y, Ishizaki K, Sakurai K. Influence of palatal surface shape of dentures on food perception. J Oral Rehabil 2008; 35:715-21. [PMID: 18713309 DOI: 10.1111/j.1365-2842.2008.01861.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The purpose of this study was to clarify the influence of the palatal surface shape of dentures on food perception. Eighteen healthy dentulous subjects (mean age, 24 years) were investigated. Four types of experimental plate were used: (i) a tailor-made plate, (ii) an average-model plate, (iii) a smooth plate, and (iv) a wrinkle plate. Test foods consisted of Bavarian cream cubes containing one to three mustard seeds and six raw carrot pieces of different shapes. Bavarian cream cubes with three seeds were used for analysis. Other foods were used as dummy foods. Subjects were required to wear experimental plates and press test foods placed on the anterior area of the tongue against the experimental plates. We measured time required to perceive number of spherical bodies, rate of correct answers, and level of perception with each type of experimental plate using a 100-mm visual analogue scale. The results showed a significant difference in response time between the average-model plate and the other experimental plates, with response time longest for the average-model plate. On the other hand, no significant differences in rate of correct answers regarding number of spherical bodies or level of perception were found among the experimental plates. When incisive papilla, palatine suture and palatal rugae based on the standard Japanese shape were replicated on the palatal surface of the plates, the time required for food perception during ingestion was prolonged in comparison to plates with other palatal surface shapes.
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109
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Kondo Y, Miyazaki K, Takayanagi K, Sakurai K. Surface treatment of PET fiber by EB-irradiation-induced graft polymerization and its effect on adhesion in natural rubber matrix. Eur Polym J 2008. [DOI: 10.1016/j.eurpolymj.2008.02.020] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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110
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Inoue K, Ochi H, Taketsuka M, Saito H, Sakurai K, Ichihashi N, Iwatsuki K, Kokubo S. Modeling of the Effect of Freezer Conditions on the Principal Constituent Parameters of Ice Cream by Using Response Surface Methodology. J Dairy Sci 2008; 91:1722-32. [DOI: 10.3168/jds.2007-0796] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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111
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Colombi P, Agnihotri DK, Asadchikov VE, Bontempi E, Bowen DK, Chang CH, Depero LE, Farnworth M, Fujimoto T, Gibaud A, Jergel M, Krumrey M, Lafford TA, Lamperti A, Ma T, Matyi RJ, Meduna M, Milita S, Sakurai K, Shabel'nikov L, Ulyanenkov A, Van der Lee A, Wiemer C. Reproducibility in X-ray reflectometry: results from the first world-wide round-robin experiment. J Appl Crystallogr 2008. [DOI: 10.1107/s0021889807051904] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
X-ray reflectometry (XRR) is a well established technique to evaluate quantitatively electron density, thickness and roughness of thin layers. In this paper, results of the first world-wide XRR round-robin experiment, involving 20 laboratories, are presented and discussed. The round-robin experiment was performed within the framework of the VAMAS Project `X-ray reflectivity measurements for evaluation of thin films and multilayers', the aim of which is to produce a `good practice' manual for XRR. The reproducibility of measurements obtained using different equipment has been investigated. The influence of the fitting of the experimental data was shown to be non-negligible compared with the experimental factors. The dynamic intensity range proves to be an important parameter for obtaining a good quality measurement. A simpler test sample which does not develop a surface oxide layer over time is now the subject of a follow-up study.
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112
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Nakata B, Yamada N, Amano R, Tendo M, Inoue M, Sakurai K, Hirakawa K. Comparison of clinicopathological characteristics of curatively resected pancreatic head and body/tail ductal cancers. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2007; 26:459-466. [PMID: 18365539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Few studies exist comparing the clinicopathological features between resectable pancreatic head (Ph) and body/tail ductal cancer (Pbt). Eighty consecutive patients with resectable tumors (Ph-56, Pbt-24) were analyzed. Tumor size was the only significant difference in clinicopathological factors between Ph and Pbt (Ph<Pbt). Although the MSTs between Ph and Pbt were not significant different, the 1-year survival rate of Ph was significantly greater than that of Pbt (67.9% versus 41.7%; p = 0.028). There were no significantly differences of recurrent rates between Ph and Pbt for individual recurrent sites. In Ph, highly metastasized LN stations were No.13 (on the posterior aspect of the head of the pancreas) at 48.2%, No.17 (on the anterior surface of the head of the pancreas) at 21.4%, No.12 (in the hepatoduodenal ligament) at 10.7%, and No.14 (along the superior mesenteric artery) at 8.9%. In Pbt, No.11 LN station (along the splenic artery) was frequently metastasized (41.7%). Although the metastasized LN stations were different between Ph and Pbt by anatomical reason, biological malignant behaviors such as the LN metastasis rate, the overall survival, and the recurrent pattern were similar.
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113
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Li C, Kimura H, Saito T, Sakurai K, Wei B, Ichikawa M, Taniguchi Y. Study of color-conversion-materials in chromatic-stability white organic light-emitting diodes. OPTICS EXPRESS 2007; 15:14422-14430. [PMID: 19550721 DOI: 10.1364/oe.15.014422] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
We have fabricated high efficiency white organic light-emitting diodes (WOLEDs) with red-dye doped hole injection layer (HIL) and blue emissive layer. We investigated the carrier transport and photoluminescence efficiency in the device of single-layer HIL with different red dye species, bis(4-diphneylamino-phenyl)-perylene-3-yl-amine, 4-(dicyanomethylene)-2-t-butyl-6-(1,1,7,7-tetramethyljulolidyl-9enyl)-4Hpyran and a dopant material of fused aromatic ring (P1) provided by Idemitsu Kosan in 4,4',4"-tris[2-naphthyl(phenyl)amino]triphenylamine with a varied concentration. It was found that 25-% wt P1 in HIL has better electro-optical characteristics. Furthermore, we have fabricated three WOLEDs of chromatic-stability with different thickness of HIL layer. High chromatic-stability CCM-WOLEDs have been achieved, which can be applied for lightening and backlight for flat panel display.
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114
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Yanagisawa K, Takagi I, Sakurai K. Influence of tongue pressure and width on tongue indentation formation. J Oral Rehabil 2007; 34:827-34. [PMID: 17919249 DOI: 10.1111/j.1365-2842.2007.01734.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
The purpose of this study was to clarify which physiological and anatomical factors were involved in the formation of tongue indentations, which are believed to be a clinical sign of clenching. Twenty-four dentulous subjects were investigated. They were divided into two groups, depending on the presence or absence of tongue indentations: (i) a tongue indentation group and (ii) a no tongue indentation group. Intraoral appliances containing a small pressure sensor were placed at the lingual surfaces of the upper and lower right first molars. Lingual pressure on the lingual surfaces of the upper and lower right first molars was then recorded under different conditions. The tasks selected as physiological factors to be recorded were: (i) silent reading at rest for 10 min, (ii) maximum voluntary clenching (MVC) for 5 s, (iii) 10% of MVC for 1 min and (iv) swallowing. The results for all tasks were compared between groups. Tongue width and dental arch width were also measured as anatomical factors. No significant differences were found between groups during silent reading at rest, clenching, swallowing, or in tongue pressure integration during silent reading at rest. However, a significant difference was found in terms of tongue width (P < 0.05). These results indicate that neither volume of lingual pressure exerted on the lingual surface of the teeth during rest, clenching, nor swallowing are related to the formation of tongue indentations. The results do suggest; however, that tongue width at rest plays an important role in the formation of tongue indentations.
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115
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Zushi Y, Noguchi K, Hashitani S, Sakurai K, Takaoka K, Tanaka N, Kishimoto H, Urade M. 379 POSTER Relationship between expression of CXCR4 and histological type in adenoid cystic carcinoma of the head and neck. EJC Suppl 2007. [DOI: 10.1016/s1359-6349(07)70397-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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116
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Takahata O, Kunisawa T, Nagashima M, Mamiya K, Sakurai K, Fujita S, Fujimoto K, Iwasaki H. Effect of age on pulmonary gas exchange during laparoscopy in the Trendelenburg lithotomy position. Acta Anaesthesiol Scand 2007; 51:687-92. [PMID: 17465975 DOI: 10.1111/j.1399-6576.2007.01311.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND Physiological changes in respiratory mechanics caused by aging may lead to a deterioration in pulmonary gas exchange, an increase in the alveolar-arterial oxygen gradient [(A-a)D(O2)] and a difference between the arterial carbon dioxide (CO(2)) tension (P(a)(CO(2))) and expired end-tidal CO(2) tension (P(ET)(CO(2))) [P((a-ET))(CO(2))] during laparoscopy in the Trendelenburg lithotomy position (TLP). METHODS The subjects were 51 gynecologic patients. Pressure-controlled ventilation was used to maintain P(ET)(CO(2)), measured by the side stream method, within the range 4-4.67 kPa. During laparoscopy with CO(2) insufflation in TLP, the tidal volume was increased to keep P(ET)(CO(2)) within +/- 20% of the pre-insufflation value. The subjects were divided into three groups by age: young group (< 45 years); middle-aged group (45-64 years); and elderly group ( > or = 65 years). RESULTS Before pneumoperitoneum (PPN), significant differences were found between the young and elderly groups in the arterial oxygen tension (P(a)(O(2))), (A-a)D(O(2)), P(a)(CO(2)) and P((a-ET))(CO(2)). In all groups, the peak inspiratory pressure and P(a)(CO(2)) increased progressively during PPN in TLP. P((a-ET))(CO(2)) increased gradually after starting CO(2) insufflation in TLP only in the elderly group. CONCLUSIONS An increase in P((a-ET))(CO(2)) was seen during PPN in TLP in the elderly group. With CO(2) insufflation in TLP, the setting of mechanical ventilation based on the value of P(ET)(CO(2)) (measured by the side stream method) should be determined with caution in elderly patients.
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117
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Kim SG, Maekawa N, Matsuzaki A, Sakurai K, Yoshikawa T. Lepton flavor violation in a supersymmetric grand unified theory model with nonuniversal sfermion masses. Int J Clin Exp Med 2007. [DOI: 10.1103/physrevd.75.115008] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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118
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Abstract
The purpose of this study was to determine the viability of Tongue Coating Index, which is a new method for evaluating tongue-coating status. To determine the reliability and reproducibility of our new evaluation criteria (Score 0: Tongue coating not visible; Score 1: Tongue coating thin, papillae of tongue visible; Score 2: Tongue coating very thick, papillae of tongue not visible), 10 observers evaluated 20 photographs of tongues. Each tongue surface was divided into nine sections. Observers evaluated each section according to our new criteria and each score for tongue-coating status was recorded in the pertinent section of the Tongue Coating Record form. They repeated the same evaluation 2 weeks after the first evaluation. The relationship between the scores obtained and number of oral microorganisms was investigated in 50 edentulous patients. Tongue coating was collected from the tongue surface after evaluation of tongue-coating status. The total number of anaerobic bacteria and the number of Candida species were counted from the specimens collected. Interobserver agreement and intraobserver agreement were 0.66 and 0.80 by Cohen's kappa, respectively. No significant difference was observed in the number of Candida species among the three scores. The number of total anaerobic bacteria, however, was significantly different among the scores (P < 0.05). Therefore, we conclude that our method for evaluating tongue-coating status offers new criteria that are superior in reliability and reproducibility, and that also reflect the total number of anaerobic bacteria present on the dorsum of the tongue.
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119
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Shimbo S, Matsuda-Inoguchi N, Watanabe T, Sakurai K, Date C, Nishimura A, Nakatsuka H, Saito H, Arisawa K, Ikeda M. Dietary intake of tin in Japan, and the effects on intake of canned food and beverage consumption. ACTA ACUST UNITED AC 2007; 24:535-45. [PMID: 17487665 DOI: 10.1080/02652030601134517] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
The study reported herein was initiated to examine dietary tin intake (Sn-D) in Japan to elucidate the possible effects of consumption of canned food (including beverages) on Sn-D, and to compare the intake among regions and between the two sexes in reference to the current provisional tolerable weekly intake and intake in other countries. Urinary tin levels (Sn-U) were also studied. Duplicate diet samples (24 h) together with records of food intake were collected in 1999-2004 from 111 adult residents in four areas of Japan. After exclusion of incomplete samples, 95 valid samples were subjected to determination of tin by inductively coupled plasma mass spectrometry (ICP-MS) after acid digestion. Among the 95 cases, 37 women additionally provided urine samples. Distribution of Sn-D was markedly skewed. Median Sn-D was 5.6 microg day(-1) for total subjects, which was about one-tenth of the values previously reported for the Japanese population; the difference was most probably attributable to the difference in the methods of determination. Consumption of canned foods led to a substantial increase in Sn-D. Thus, the median Sn-D for canned food consumers of 35.7 microg day(-1), was eight-fold higher than the median Sn-D for non-consumers of 4.5 microg day(-1). Sn-U (as corrected for creatinine concentration) distributed log-normally with a geometric mean of 2.0 microg (g cr)(-1). No effect of canned food consumption was evident on Sn-U. When compared internationally, Sn-D for the Japanese population was substantially lower than Sn-D for populations in other industrialized countries.
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120
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Wade NJ, Sakurai K, Gyoba J. Whither Wundt? Perception 2007; 36:163-6. [PMID: 17402661 DOI: 10.1068/p3602ed] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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121
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Li C, Ichikawa M, Wei B, Taniguchi Y, Kimura H, Kawaguchi K, Sakurai K. A highly color-stability white organic light-emitting diode by color conversion within hole injection layer. OPTICS EXPRESS 2007; 15:608-615. [PMID: 19532282 DOI: 10.1364/oe.15.000608] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
We demonstrated a novel-structure white organic light-emitting devices (WOLEDs) composed of a greenish blue fluorescent emitting layer and a red fluorescent dye-doped hole injection layer. The spectra of WOLEDs show no change at a wide range current density operation and long-term continuous operation. We concluded that carriers recombined inside the emitting layer in the WOLEDs to produce a greenish blue electroluminescence (EL), and a part of the EL was absorbed by the red fluorescent guest doped hole injection layer and converted into red photoluminescence (PL); the whole white emission from the device was a mixture of the greenish blue EL and red PL.
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122
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Takahashi T, Yuasa S, Tsuji M, Sakurai K. Supermolecular structure of a new, wholly aromatic thermoplastic polyimide. J MACROMOL SCI B 2006. [DOI: 10.1080/00222349408248079] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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123
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Takahashi T, Suzuki K, Aoki T, Sakurai K. Banded structure of gel-drawn poly(vinyl alcohol) fibers. J MACROMOL SCI B 2006. [DOI: 10.1080/00222349108245787] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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124
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Ogino J, Sakurai K, Yoshiwara K, Suzuki Y, Ishizuka N, Seki N, Suzuki Y, Koseki H, Shirasawa T, Hashimoto N, Yagui K, Saito Y. Insulin resistance and increased pancreatic beta-cell proliferation in mice expressing a mutant insulin receptor (P1195L). J Endocrinol 2006; 190:739-47. [PMID: 17003275 DOI: 10.1677/joe.1.06849] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Several mutations of the tyrosine kinase domain of insulin receptor (IR) have been clinically reported to lead insulin resistance and insulin hypersecretion in humans. However, it has not been completely clarified how insulin resistance and pancreatic beta-cell function affect each other under the expression of mutant IR. We investigated the response of pancreatic beta-cells in mice carrying a mutation (P1195L) in the tyrosine kinase domain of IR beta-subunit. Homozygous (Ir(P1195L/P1195L)) mice showed severe ketoacidosis and died within 2 days after birth, and heterozygous (Ir(P1195L/wt)) mice showed normal levels of plasma glucose, but high levels of plasma insulin in the fasted state and after glucose loading, and a reduced response of plasma glucose lowering effect to exogenously administered insulin compared with wild type (Ir(wt/wt)) mice. There were no differences in the insulin receptor substrate (IRS)-2 expression and its phosphorylation levels in the liver between Ir(P1195L/wt) and Ir(wt/wt) mice, both before and after insulin injection. This result may indicate that IRS-2 signaling is not changed in Ir(P1195L/wt) mice. The beta-cell mass increased due to the increased numbers of beta-cells in Ir(P1195L/wt) mice. More proliferative beta-cells were observed in Ir(P1195L/wt) mice, but the number of apoptotic beta-cells was almost the same as that in Ir(wt/wt) mice, even after streptozotocin treatment. These data suggest that, in Ir(P1195L/wt) mice, normal levels of plasma glucose were maintained due to high levels of plasma insulin resulting from increased numbers of beta-cells, which in turn was due to increased beta-cell proliferation rather than decreased beta-cell apoptosis.
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125
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Sakurai K, Tanaka H, Ogawa N, Takahashi T. Shape-memorizable styrene-butadiene block copolymer. I. Thermal and mechanical behaviors and structural change with deformation. J MACROMOL SCI B 2006. [DOI: 10.1080/00222349708212397] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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