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Transport properties (dc electrical resistivity, threshold electric field, and narrow-band noise) are reported for nanoribbon specimens of NbSe3 with thicknesses as low as 18 nm. As the sample thickness decreases, the resistive anomalies characteristic of the charge density wave (CDW) state are suppressed and the threshold fields for nonlinear CDW conduction apparently diverge. Narrow-band noise measurements allow determination of the concentration of carriers condensed in the CDW state n c, reflective of the CDW order parameter Δ. Although the CDW transition temperatures are relatively independent of sample thickness, in the lower CDW state Δ decreases dramatically with decreasing sample thickness.

Superconductivity in monolayer niobium diselenide (NbSe2) on bilayer graphene is studied by electrical transport. Monolayer NbSe2 is grown on bilayer graphene by molecular beam epitaxy and capped with a selenium film to avoid degradation in air. The selenium capped samples have TC = 1.9 K. In situ measurements down to 4 K in ultrahigh vacuum show that the effect of the selenium layer on the transport is negligible. The superconducting transition and upper critical fields in air exposed and selenium capped samples are compared. Schematic of monolayer NbSe2/bilayer graphene with selenium capping layer and electrical contacts.

Layered transition metal dichalcogenides are ideal systems for exploring the effects of dimensionality on correlated electronic phases such as charge density wave (CDW) order and superconductivity. In bulk NbSe 2 a CDW sets in at T CDW = 33 K and superconductivity sets in at T c = 7.2 K. Below T c these electronic states coexist but their microscopic formation mechanisms remain controversial. Here we present an electronic characterization study of a single two-dimensional (2D) layer of NbSe 2 by means of low-temperature scanning tunnelling microscopy/spectroscopy (STM/STS), angle-resolved photoemission spectroscopy (ARPES), and electrical transport measurements. We demonstrate that 3 × 3 CDW order in NbSe 2 remains intact in two dimensions. Superconductivity also still remains in the 2D limit, but its onset temperature is depressed to 1.9 K. Our STS measurements at 5 K reveal a CDW gap of= 4 meV at the Fermi energy, which is accessible by means of STS owing to the removal of bands crossing the Fermi level for a single layer. Our observations are consistent with the simplified (compared to bulk) electronic structure of single-layer NbSe 2, thus providing insight into CDW formation and superconductivity in this model strongly correlated system.

The purpose of this study was to investigate the relationship between self-estimated values and landing errors in the single leg hop for distance (SHD). Self-estimated values and hop distance were measured for 63 healthy adults. The participants were classified into two groups: those who were able to achieve a stable landing (group A), and those who were not (group B). In addition to the self-estimated values, knee flexion and extension muscle strength, age, height, and weight were included in the analysis as factors that may potentially affect postural stability during landing. Statistical analyses were performed using the Mann-Whitney U test, independent t-test, logistic regression analysis, and ROC analysis. The significance level was set at 5%. The results showed that the mean self-estimated value (standardized by height) was significantly higher for group B (102.8 ± 19.0) compared to the corresponding value for group A (74.4 ± 16.8). Of the potentially influential factors, the only one identified as a predictor of landing stability was the self-estimated value, with a cut-off value of 87.1%. If the SHD self-estimated value exceeds 87.1%, a landing error may occur. [ABSTRACT FROM AUTHOR]

The purpose of this study was to examine the relationship between the amount of change in medial longitudinal arch height of the foot (MLA) on static weight bearing and the amount of change in knee flexion angle during single-leg landing. The subjects were 22 healthy adults comprising 11 males and 11 females. In evaluation of the foot alignment, distance from the floor to the most prominent part of the navicular tuberosity was measured in the sitting and standing positions, and the difference in the distance between the two positions was defined as amount of change in MLA. In the kinematic analysis of landing, markers were attached to the bony landmarks in the lower limbs, single-leg landing from a 30-cm-high platform. And then, knee flexion angle was measured on the video image. The analysis of the obtained results showed a significant negative correlation between the amount of change in MLA and change in knee flexion angle during single-leg landing. Although there have been studies reporting the effect of MLA on knee valgus angle during landing, the results of this study suggest that MLA also relates to the amount of change in the knee flexion angle in landing. [ABSTRACT FROM AUTHOR]

Miyoko Arimoto1, Yutaka Komiyama2, Fumiko Okamae1, Akemi Ichibe1, Setsuko Teranishi1, Hirohiko Tokunaga1, Keiko Nakaya3, Michie Fujiwara3, Manabu Yamaoka4, Shuji Onishi4, Rie Miyamoto5, Naoto Nakamichi5, Shosaku Nomura51Blood Transfusion Unit, Kansai Medical University Takii Hospital, 2Department of Clinical Sciences and Laboratory Medicine, Kansai Medical University, 3Clinical Medical Technology Unit, Kansai Medical University Takii Hospital, 4Blood Transfusion Unit, Kansai Medical University Hirakata Hospital, 5First Department of Internal Medicine, Kansai Medical University, Moriguchi, JapanAbstract: Thrombotic thrombocytopenic purpura (TTP) is a multisystemic microvascular disorder that may be caused by an imbalance between unusually large von Willebrand factor multimers and the cleaving protease ADAMTS13. In acquired TTP, especially in secondary TTP with various underlying diseases, the diagnosis is difficult because there are many cases that do not exhibit severe deficiency of ADAMTS13 or raised levels of ADAMST13 inhibitors. It is well known that collagen disease, malignancy, and hematopoietic stem cell transplantation can be underlying conditions that induce TTP. However, TTP induced by acute pancreatitis, as experienced by our patient, has rarely been reported. Our patient completely recovered with treatments using steroids and plasma exchange (PE) only. In cases where patients develop acute pancreatitis with no apparent causes for hemolytic anemia and thrombocytopenia, the possibility of TTP should be considered. Treatments for TTP including PE should be evaluated as soon as a diagnosis is made.Keywords: thrombotic thrombocytopenic purpura, ADAMTS13, acute pancreatitis, plasma exchange