94 research outputs found
Semi-automatic staging area for high-quality structured data extraction from scientific literature
In this study, we propose a staging area for ingesting new superconductors'
experimental data in SuperCon that is machine-collected from scientific
articles. Our objective is to enhance the efficiency of updating SuperCon while
maintaining or enhancing the data quality. We present a semi-automatic staging
area driven by a workflow combining automatic and manual processes on the
extracted database. An anomaly detection automatic process aims to pre-screen
the collected data. Users can then manually correct any errors through a user
interface tailored to simplify the data verification on the original PDF
documents. Additionally, when a record is corrected, its raw data is collected
and utilised to improve machine learning models as training data. Evaluation
experiments demonstrate that our staging area significantly improves curation
quality. We compare the interface with the traditional manual approach of
reading PDF documents and recording information in an Excel document. Using the
interface boosts the precision and recall by 6% and 50%, respectively to an
average increase of 40% in F1-score.Comment: 5 tables, 9 figures, 31 page
Bilayer Indium Tin Oxide Electrodes for Deformation-Free Ultrathin Flexible Perovskite Solar Cells
The superior electrical conductivity and optical transparency of indium tin oxide (ITO) make it an ideal electrode material for use in optoelectronic devices such as solar cells. When ITO electrodes are fabricated on very thin plastic substrates, however, the internal stress of the ITO layer causes the substrate to deform, severely limiting the device's performance. Herein, it is shown that ITO bilayers composed of an amorphous base layer and a crystalline overlayer lead to deformation-free ITO electrodes. It is shown that an optimized bilayer structure is achieved when the internal stresses of the amorphous and crystalline layers approximately cancel. With this approach, mixed composition metal halide perovskite solar cells with ITO electrodes are successfully fabricated on 4 μm polyethylene naphthalate films. A power conversion efficiency (PCE) of 18.2% is obtained for the reference cell design, corresponding to a power-to-weight ratio of 24 W g−1 before encapsulation. The devices retain 95% of the original PCE after 1000 bend cycles, while under simulated indoor lighting (white LED, 200 lux, 5000 K) the PCE reaches 28.3%. A 3-cell module with a designated area of 2.3 cm² is realized with a power output of 28.1 mW and an open-circuit voltage of 3.17 V
ニジゲン コウデンシ ブンコウ ト デンキ デンドウド ソクテイ ニヨル Biケイ コウオン チョウデンドウタイ ノ ゲンシ デンシ コウゾウ
博士(Doctor)理学(Science)奈良先端科学技術大学院大学博第773号甲第773号博士(理学)奈良先端科学技術大学院大
Suppression of fibrogenic gene expression and liver fibrosis using a synthetic prostacyclin agonist
Chronic injury and inflammation in the liver are associated with the development of liver fibrosis. Expressions of transforming growth factor-β1 (TGF-β1) and hepatocyte growth factor (HGF) participate in the development and suppression, respectively, of liver fibrosis. Here, we investigated the effect of ONO-1301, a synthetic prostaglandin I2/IP receptor agonist, on liver fibrosis and on changes in the hepatic expressions of genes that regulate the progression of fibrosis in mice. Liver fibrosis was caused by the repetitive administration of CCl4 for 12 weeks, with ONO-1301 being administered during the last 4 weeks. The expressions of fibrogenic genes: TGF-β1, connective tissue growth factor, α-smooth muscle actin, type-I collagen, and type-III collagen were upregulated by chronic liver injury, which was associated with the expansion of myofibroblasts and the development of liver fibrosis. Treatment with ONO-1301 increased hepatic HGF mRNA expression, but decreased the expressions of TGF-β1, connective tissue growth factor, α-smooth muscle actin, and type-I and type-III collagen, which was associated with the suppression of myofibroblast expansion and liver fibrosis. Neutralizing antibody for HGF significantly attenuated the suppressive action of ONO-1301 on liver fibrosis and fibrogenic gene expressions. The therapeutic action of ONO-1301 on liver fibrosis may have occurred partly through HGF-mediated pathways
Baseline factors predicting the need for corneal crosslinking in patients with keratoconus.
INTRODUCTION:The primary purpose of crosslinking is to halt the progression of ectasia. We retrospectively assessed the condition of keratoconus patients who were followed-up at least twice after the initial examination to evaluate keratoconus progression, to identify definitive factors to predict a later need for corneal crosslinking (CXL). METHODS:The medical charts of 158 eyes of 158 keratoconus patients (112 males and 46 females; mean age, 27.8 ± 11.7 years), who were followed up at the Department of Ophthalmology, Keio University School of Medicine at least twice after the initial examination to evaluate keratoconus progression were retrospectively reviewed. Best-spectacle corrected visual acuity, intraocular pressure, steepest corneal axis on the anterior float (Ks), thinnest corneal thickness according to Pentacam® HR, and corneal endothelial cell density were assessed. Gender, age, onset age of keratoconus, history of atopic dermatitis, and Pentacam® indices were also recorded. CXL was performed when the eye showed significant keratoconus progression, an increase in the steepest keratometric value, or an increase in the spherical equivalent or cylinder power of the manifest refraction by more than 1.0 D versus the respective values 2 years prior. Predictor variables and the requirement for CXL were analyzed using logistic regression. RESULTS:Fifty-eight eyes required CXL treatment. The best predictor of the requirement for CXL was patient age, followed by the Pentacam® Rmin (the minimum sagittal curvature evaluated by Pentacam®) value. The incidence of CXL was 86.4% in the 5.73 mm underwent treatment. CONCLUSIONS:An age of < 20 years and an Rmin value of ≤ 5.73 mm predicted keratoconus progression and the requirement for CXL treatment in the near future
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