One-Electron State of a Partially Ionized High-Z Ion

An effective potential of an isolated partially ionized high-Z ion, calculated within the framework of the statistical models of atoms, is injected into the one-electron Schrödinger equation, in view of evaluating the electron density and comparing it with the results of statistical models. Starting from this initial value, a self-consistent electron density is obtained on the basis of the density functional theory, where quantum natures of electrons are fully taken into account

Excessive gingival display treated with two-piece segmental Le Fort I osteotomy : A Case Report

Background. The demand for orthognathic surgery has increased worldwide. Women with jaw deformity tend to have a worse quality of life than men owing to the deformity’s negative effects on body image, low self-esteem, lack of self-confidence, and dissatisfaction with life. Therefore, they wish for more reliable treatment options. Case Description. A woman aged 25 years and 9 months sought treatment for a convex profile and excessive gingival display caused by a skeletal Class II jaw-base relationship. Gingival exposure was up to 6.5 millimeters at full smile. She chose orthognathic surgery, and the authors performed a 2-piece segmental Le Fort I osteotomy and bilateral sagittal split ramus osteotomy. After active orthodontic treatment, the protrusive profile was improved, and an acceptable occlusion and an attractive smile were achieved. Practical Implications. It is hoped that 2-piece segmental Le Fort I osteotomy becomes a common treatment option for patients with protrusive profiles and excessive gingival displays

Le FortⅠガタ ホネキリジュツ ニオケル ポリ L ニュウサン ポリグリコールサン キョウジュウゴウタイ プレート ノ アンテイセイ

This paper verified the stability of poly-L-Lactic/polyglycolic acid bone fixation devices in Le Fort I osteotomy. The subjects of the study were 40 patients (33 females and 7 males) who underwent Le Fort I osteotomy with fixation by poly-L-Lactic/polyglycolic acid bone fixation devices (plates and screws). The subjects were divided into two groups according to their skeletal deformity pattern: skeletal Class II and Class III. Lateral cephalometric radiographs were measured and compared for the absolute magnitude of skeletal relapse from pretreatment to immediately postoperative to 6 months and 1 year after surgery. The X-axis applied the Sella-Nasion line, and the Y-axis passed through Sella perpendicular to the X-axis. The evaluation factors were A-point, Prosthion, and posterior nasal spine (PNS). In both groups, statistical analysis showed no significant differences in postoperative skeletal stability. In conclusion, poly-L-Lactic/polyglycolic acid bone fixation devices can provide postoperative stability for Le Fort I osteotomy

A photoinduced growth system of peptide nanofibres addressed by DNA hybridization

Spatiotemporal control of peptide nanofibre growth was achieved by photocleavage of a DNA-conjugated β-sheet forming peptide that is linked through a photoresponsive amino acid residue. Peptide nanofibres were selectively formed by photocleaving the conjugate on complementary DNA-immobilised glass substrate

Gravity sensing in plant and animal cells

Gravity determines shape of body tissue and affects the functions of life, both in plants and animals. The cellular response to gravity is an active process of mechanotransduction. Although plants and animals share some common mechanisms of gravity sensing in spite of their distant phylogenetic origin, each species has its own mechanism to sense and respond to gravity. In this review, we discuss current understanding regarding the mechanisms of cellular gravity sensing in plants and animals. Understanding gravisensing also contributes to life on Earth, e.g., understanding osteoporosis and muscle atrophy. Furthermore, in the current age of Mars exploration, understanding cellular responses to gravity will form the foundation of living in space