Factors involved in the movement of the center of mass in healthy women

妊娠中の体形変化は姿勢変化をもたらし、このためにおこる重心移動がマイナートラブルを起こす原因となることが考えられる。そこで、健康女性37人を対象に、重心動揺を起こす因子と考えられる体型要因に着目した基礎的研究を行い、以下の結果を得た。1）重心動揺測定項目の中で、重心動揺距離、包絡面積、重心動揺面積の項目は開眼時より閉眼時が有意に数値が大きく、X軸方向動揺平均、Y軸方向動揺平均の項目は、開眼時と閉眼時とで差がなかった。2）ロンベルグ姿勢での開眼及び閉眼重心動揺検査では、座高、下肢長に正の相関が、肥満度に負の相関があるこが示唆された。During the period of pregnancy, movement of the center of mass due to changes in the posture results from the changes in the body form, and this may cause minor troubles. In this study, we examined body form factors which may be involved in the movement of the center of mass in 37 healthy womem, and obtained the following results. 1) In the examination items of the movement of the center of mass, the moving distance of the center of mass, the envelope area and the area of moving of the center of mass were significantly larger when measured with the eyes open than when measured with the eyes closed, while there were no differences in the means of moving in the x-axis direction and in the y-axis direction whether the eyes were open or closed. 2) The moving examinations of the center of mass in the Romberg's posture with open or closed eyes suggested positive correlations with the sitting height and the length of the inferir limb and a negative correlation with the obesity level

Exploring molecular backgrounds of quality traits in rice by predictive models based on high-coverage metabolomics

<p>Abstract</p> <p>Background</p> <p>Increasing awareness of limitations to natural resources has set high expectations for plant science to deliver efficient crops with increased yields, improved stress tolerance, and tailored composition. Collections of representative varieties are a valuable resource for compiling broad breeding germplasms that can satisfy these diverse needs.</p> <p>Results</p> <p>Here we show that the untargeted high-coverage metabolomic characterization of such core collections is a powerful approach for studying the molecular backgrounds of quality traits and for constructing predictive metabolome-trait models. We profiled the metabolic composition of kernels from field-grown plants of the rice diversity research set using 4 complementary analytical platforms. We found that the metabolite profiles were correlated with both the overall population structure and fine-grained genetic diversity. Multivariate regression analysis showed that 10 of the 17 studied quality traits could be predicted from the metabolic composition independently of the population structure. Furthermore, the model of amylose ratio could be validated using external varieties grown in an independent experiment.</p> <p>Conclusions</p> <p>Our results demonstrate the utility of metabolomics for linking traits with quantitative molecular data. This opens up new opportunities for trait prediction and construction of tailored germplasms to support modern plant breeding.</p

Photoemission Angular Distribution Beyond the Single Wavevector Description of Photoelectron Final States

We develop a novel simulation procedure for angle-resolved photoemission spectroscopy (ARPES), where a photoelectron wave function is set to be an outgoing plane wave in a vacuum associated with the emitted photoelectron wave packet. ARPES measurements on the transition metal dichalcogenide $1T$-$\mathrm{Ti}\mathrm{S}_2$ are performed, and our simulations exhibit good agreement with experiments. Analysis of our calculated final state wave functions quantitatively visualizes that they include various waves due to the boundary condition and the uneven crystal potential. These results show that a more detailed investigation of the photoelectron final states is necessary to fully explain the photon-energy- and light-polarization-dependent ARPES spectra.Comment: 6+14 pages, 4+15 figure

Measurement and correlation for solubilities of alkali metal chlorides in water vapor at high temperature and pressure

金沢大学大学院自然科学研究科生産プロセスA flow type apparatus was designed and constructed to measure the solubilities of salts in water vapor at high temperature and pressure. The apparatus was equipped with an additional pure water line to prevent the clogging by precipitated solid salts at the outlet of an equilibrium cell. The solubilities of sodium chloride and potassium chloride in water vapor were measured at 623-673 K and 9.0-12.0 MPa. In order to verify the soundness of this method and the performance of the apparatus, the experimental results for the solubilities of sodium chloride at 673 K were compared with the literature data. The present data are in good agreement with the literature data. The solubilities of sodium chloride are similar to those of potassium chloride at the same temperatures and pressures. The isobaric solubilities decrease with increasing temperature at the experimental pressure range. The experimental results of solubilities were correlated by a solution model. The molar volumes and the energy parameters of salts were treated as adjustable parameters and were optimized with the present and literature data. The adjusted energy parameters for salts can be related to a linear function of the temperature. The correlated results show good agreement with the experimental data. © 2004 Elsevier B.V. All rights reserved

Broken Screw Rotational Symmetry in the Near-Surface Electronic Structure of ABAB-Stacked Crystals

We investigate the electronic structure of $2H$-$\mathrm{Nb}\mathrm{S}_2$ and $h$$\mathrm{BN}$ by angle-resolved photoemission spectroscopy (ARPES) and photoemission intensity calculations. Although in bulk form, these materials are expected to exhibit band degeneracy in the $k_z=\pi/c$ plane due to screw rotation and time-reversal symmetries, we observe gapped band dispersion near the surface. We extract from first-principles calculations the near-surface electronic structure probed by ARPES and find that the calculated photoemission spectra from the near-surface region reproduce the gapped ARPES spectra. Our results show that the near-surface electronic structure can be qualitatively different from the bulk one due to partially broken nonsymmorphic symmetries.Comment: 6+11 pages, 4+13 figure

PD-1 and LAG-3 inhibitory co-receptors act synergistically to prevent autoimmunity in mice

A new mouse model of spontaneous autoimmune disease reveals an important role for the inhibitory co-receptor LAG-3 in suppressing autoimmunity

Entrance surface dose measurements using a small OSL dosimeter with a computed tomography scanner having 320 rows of detectors

Entrance surface dose (ESD) measurements are important in X-ray computed tomography (CT) for examination, but in clinical settings it is difficult to measure ESDs because of a lack of suitable dosimeters. We focus on the capability of a small optically stimulated luminescence (OSL) dosimeter. The aim of this study is to propose a practical method for using an OSL dosimeter to measure the ESD when performing a CT examination. The small OSL dosimeter has an outer width of 10 mm; it is assumed that a partial dose may be measured because the slice thickness and helical pitch can be set to various values. To verify our method, we used a CT scanner having 320 rows of detectors and checked the consistencies of the ESDs measured using OSL dosimeters by comparing them with those measured using Gafchromic™ films. The films were calibrated using an ionization chamber on the basis of half-value layer estimation. On the other hand, the OSL dosimeter was appropriately calibrated using a practical calibration curve previously proposed by our group. The ESDs measured using the OSL dosimeters were in good agreement with the reference ESDs from the Gafchromic™ films. Using these data, we also estimated the uncertainty of ESDs measured with small OSL dosimeters. We concluded that a small OSL dosimeter can be considered suitable for measuring the ESD with an uncertainty of 30 % during CT examinations in which pitch factors below 1.000 are applied