bluuebunny/crossref_metadata_2025 huggingface dataset:
THE MICROSTRUCTURE AND OPTICAL PROPERTIES OF THE NANOCOMPOSITE FILMS OF InP/SiO2
Authors: DING RUI-QIN  , WANG HAO  , W.F.LAU  , W.Y.CHEUNG  , S.P.WONG  , WANG NING-JUAN  , YU YING-MIN  ,   (1)广东省五邑大学薄膜与纳米材料研究所,江门529020; (2)南开大学光电子薄膜器件与技术研究所,天津300071; (3)香港中文大学电子工程系暨材料科技研究中心,新界,香港
Published: December 2020

InP/SiO2 composite thin films have been deposited on hot substrates of slice of silica glass and polished silicon by a radio frequency magnetron co-sputtering technique, and annealing under several conditions. Detailed analysis of the composition of the films by X-ray photoelectron spectroscopy and Rutherford backscattering spectroscopy shows that the InP and SiO2 exist in normal stoichiometry as a whole. X-ray diffraction patterns and Raman spectra of the films conform the presence of InP nanocrystals in the composite films. Very small amounts of extra indium and In2O3 have been removed and pure InP/SiO2 nanocomposite films have been obtained by annealing at high temperature (520℃) in over-pressure of phosphorous vapor. Blue shifts of optical absorption spectra and great enhancement of optical nonlinearity of the films at room temperature have been observed.
GLOBAL DEFORMATION GEOMETRY OFA SELF-GRAVITATIONAL ROTATIONAL BALL
Authors: QIANG WEN-CHAO  ,   西安建筑科技大学理学院,西安710055
Published: December 2020

In this paper deformation geometry of a self-gravitational rotational ball is studied globally. The formulas of Gaussian curvature, longitudinal and polar circumference are given. The effect of self-gravitational parameter and rotational parameter for global surface is analyzed. Finally, the upper limits of mass and angular velocity of a self-gravitational rotational ball are determined.
LONG-RANGE CORRELATIONS IN QUANTUM SPECTRA
Authors: SONG JIAN-JUN  , LI XI-GUO  ,   (1)兰州重离子加速器国家实验室原子核理论研究中心,兰州730000;中国科学院近代物理研究所,兰州730000; (2)中国科学院近代物理研究所,兰州730000
Published: December 2020

Starting From Berry-Tabor trace formula, Einstein-Brillouin-Keller (EBK) quantization condition is adopted to derive action quantization conditions of periodic orbits in two dimensional uncoupled oscillators. The correspondence relations between quantum levels and periodic orbits are found. They indicate that two levels' cotributions to recurrence function coherently interfere with each other if the two levels correspond to periodic orbits with identical topology. The peaks in recurrence spectra results from coherent interference among levels whose corresponding periodic orbits have identical topology. There are long-range correlations among these levels.
INCOHERENTLY COUPLED BRIGHT-DARK SCREENING-PHOTOVOLTAIC SOLITON PAIRS IN BIASED PHOTOVOLTAIC PHOTOREFRACTIVE CRYSTALS
Authors: HOU CHUN-FENG  , LI SHI-QUN  , LI BIN  , SUN XIU-DONG  ,   (1)哈尔滨工业大学应用物理系,哈尔滨150001; (2)清华大学物理系,北京100084
Published: December 2020

We investigate the incoherent coupling of two mutually incoherent optical beams with the same polarization and wavelength in biased photovoltaic photorefractive crystals, and predict that incoherently coupled bright-dark screening-photovoltaic soliton pairs can be established in biased photovoltaic photorefractive crystals.
NUMERICAL ANALYSIS OF SAWTOOTH OSCILLATION DURING ELECTRON CYCLOTRON HEATING PHASES
Authors: WANG SHI-QING  , JIN YA-QIU  ,   复旦大学波散射和遥感中心与电子工程系,上海200433
Published: December 2020

By employing two models, namely the reconnection model and the turbulence model, we present a transport code simulation of sawtooth discharges in T-10 Tokamak in the electron cyclotron heating phases, and the trigger conditions are also coupled into the transport code. In one discharge, ECRH was located nearly on-axis, and in another ECRH was located well off-axis. The comparison of numerical results and experiment data show that good prediction was obtained with the turbulence model. In contrast, due to some fundamental shortcoming of the reconnection model, no satisfactory fit could be obtained using the latter.
GEOMETRIC PROPERTIES OF CHARGED -(PA)4-(PPP)m-(PA)4-TRIBLOCK COPOLYMERS
Authors: LIU DE-SHENG  , WANG LU-XIA  , CHEN YAN-XUE  , HAN SHENG-HAO  , XIE SHI-JIE  , MEI LIANG-MO  ,   (1)山东大学物理与微电子学院,济南250100; (2)山东大学物理与微电子学院,济南250100;晶体材料国家重点实验室,济南250100
Published: December 2020

We present the results of the Austin-Model 1 (AM1) geometry optimizations aimed at determining the charged geometry properties of -(PA)4-(PPP)m-(PA)4- triblock copolymers that have the well-barrier-well structure. The distributions of the doped charges depend upon the density of doped charges and the length of the barrier.
STUDY ON STRESS INDEUCED LEAKAGE CURRENT TRANSIENT CHARACTERISTICS IN THIN GATE OXIDE
Authors: LIU HONG-XIA  , HAO YUE  ,   西安电子科技大学微电子研究所,西安710071
Published: December 2020

FN tunneling and hot hole (HH) stress induced leakage current (SILC) transient characteristics in thin gate oxide are investigated. Under both stress conditions, the stress induced leakage current obeys a power-law time dependence with different power factor. For HH SILC, the power factor significantly departs from -1. HH SILC is found to have a more pronounced transient effect. The results show that HH SILC can be attributed to positive oxide detrapping and annihilation of positive charge-assisted tunneling current. The latter can be diminished by substrate hot electron injection.
THE UV PHOTOCONDUCTIVITY OF n-TYPE GaN FILMSDEPOSITED BY MOCVD
Authors: ZHANG DE-HENG  , LIU YUN-YAN  , ZHANG DE-JUN  ,   山东大学物理系,济南250100
Published: December 2020

This paper studies the UV photoconductivity for non-doped and weakly Mg doped n-type GaN films deposited by MOCVD. It was observed that these n-type samples have notable UV photoresponse and the relaxation time of the photoresponse is relatively short.In the weak intensity range, the photoresponse decreases linearly with the light intensity and the relaxation time of the photoresponse becomes larger.
NUMERICAL SIMULATION STUDY OF LASER-DRIVEN SHOCKWAVE PROPAGATION IN PLANAR Al FOIL TARGETS
Authors: ZHANG JIE  , WANG WEI
Published: December 2020

The-numerical simulation study of an experimental result of laser-driven shock wave propagation in a planar aluminum foil target is performed using a one-dimensional radiation hydrodynamic code MULTI. The effect of spatial mesh size on numerical simulation resulits is found to be significant and optimum mesh size is obtained.-Series of simulations are performed using different sets of laser absorption coefficients and the most appropriate laser absorption coefficients value for two laser intensity values used in the experiment is obtained .The results suggest that shock velocities and peak shock pressures are in good agreement with the experimental results.
平面对称黑洞的统计熵
Authors: Zhao Ren  , Zhang Chun-Li  ,   雁北师范学院物理系,大同037000
Published: December 2020

Ｂｙｕｓｉｎｇｔｈｅｍｅｔｈｏｄｏｆｑｕａｎｔｕｍｓｔａｔｉｓｔｉｃｓ,ｗｅｄｉｒｅｃｔｌｙｄｅｒｉｖｅｔｈｅｐａｒｔｉｔｉｏｎｆｕｎｃｔｉｏｎｏｆｔｈｅｂｏｓｏｎｉｃａｎｄｅｒｍｉｏｎｉｃｆｉｅｌｄｏｎｂｌａｃｋｐｌａｎｅａｎｄｏｂｔａｉｎｔｈｅｉｎｔｅｇｒａｌｅｘｐｒｅｓｓｉｏｎｏｆｔｈｅｂｌａｃｋｐｌａｎｅ’ｓｅｎｔｒｏｐｙ,ｗｈｉｃｈａｖｏｉｄｓｔｈｅｄｉｆｆｉｃｕｌｔｙｉｎｓｏｌｖｉｎｇｔｈｅｗａｖｅｅｑｕａｔｉｏｎｏｆｖａｒｉｏｕｓｐａｒｔｉｃｌｅｓ.Ｔｈｅｎｖｉａｔｈｅｉｍｐｒｏｖｅｄｂｒｉｃｋ -ｗａｌｌｍｅｔｈｏｄ,ｍｅｍｂｒａｎｅｍｏｄｅｌ,ｗｅｃａｌｃｕｌａｔｅｔｈｅｂｌａｃｋｐｌａｎｅ’ｓｅｎｔｒｏｐｙａｎｄｆｉｎｄｏｕｔｔｈａｔｉｆｗｅｌｅｔｔｈｅｉｎｔｅｇｒａｌｕｐｐｅｒａｎｄｌｏｗｅｒｌｉｍｉｔｓｂｏｔｈｔｅｎｄｔｏｔｈｅｈｏｒｉｚｏｎ ,ｔｈｅｅｎｔｒｏｐｙｏｆｔｈｅｂｌａｃｋｐｌａｎｅｉｓｐｒｏｐｏｒｔｉｏｎａｌｔｏｔｈｅａｒｅａｏｆｈｏｒｉｚｏｎ.Ｉｎｏｕｒｒｅｓｕｌｔ,ｔｈｅｓｔｒｉｐｐｅｄｔｅｒｍａｎｄｔｈｅｄｉｖｅｒｇｅｎｔｌｏｇａｒｉｔｈｍｉｃｔｅｒｍｉｎｔｈｅｏｒｉｇｉｎａｌｂｒｉｃｋ -ｗａｌｌｍｅｔｈｏｄｎｏｌｏｎｇｅｒｅｘｉｓｔ.Ｉｎｔｈｅｗｈｏｌｅｐｒｏｃｅｓｓ,ｗｅｄｏｎｏｔｔａｋｅａｎｙａｐｐｒｏｘｉｍａｔｉｏｎ .Ｗｅｏｆｆｅｒａｎｅｗｓｉｍｐｌｅａｎｄｄｉｒｅｃｔｗａｙｏｆｃａｌｃｕｌａｔｉｎｇｔｈｅｅｎｔｒｏｐｙｏｆｄｉｆｆｅｒｅｎｔｃｏｍｐｌｉｃａｔｅｄｂｌａｃｋｈｏｌｅｓ.
地面对激光雷达信号散射的统计研究
Authors: Guo Guan-Jun  , Shao Yun  ,   (1)中国科学院遥感应用研究所信息开放实验室,北京100101; (2)中国科学院遥感应用研究所信息开放实验室,北京100101;安徽蚌埠坦克学院物理教研室,蚌埠233013
Published: December 2020

Ｔｈｅｓｕｒｆａｃｅｒｏｕｇｈｎｅｓｓｄｅｐｅｎｄｅｎｃｅｏｆｔｈｅｏｐｔｉｃａｌｆｉｅｌｄａｔｕｏｃｏｒｒｅｌａｔｉｏｎｆｕｎｃｔｉｏｎａｎｄｔｈｅｉｎｔｅｎｓｉｔｙａｕｔｏｃｏｒｒｅｌａｔｉｏｎｆｕｎｃｔｉｏｎｏｆｔｈｅｓｐｅｃｋｌｅｐａｔｔｅｒｎ ,ｐｒｏｄｕｃｅｄｉｎｔｈｅｆａｒｆｉｅｌｄｕｎｄｅｒｔｈｅｉｌｌｕｍｉｎａｔｉｏｎｏｆａＧａｕｓｓｉａｎｂｅａｍ ,ｈａｓｂｅｅｎｔｈｅｏｒｅｔｉｃａｌｌｙｉｎｖｅｓｔｉｇａｔｅｄｗｉｔｈｔｈｅａｓｓｕｍｐｔｉｏｎｔｈａｔｔｈｅｉｒｒｅｇｕｌａｒｉｔｉｅｓｏｆｔｈｅｔａｒｇｅｔｓｕｒｆａｃｅｓａｒｅｌａｒｇｅｒｔｈａｎｔｈｅｌａｓｅｒｗａｖｅｌｅｎｇｔｈ.Ａｎａｌｙｔｉｃａｌｅｘｐｒｅｓｓｉｏｎｓｆｏｒｔｈｅｆｉｒｓｔ ａｎｄｓｅｃｏｎｄ ｏｒｄｅｒｍｏｍｅｎｔｓｏｆｔｈｅｉｎｔｅｎｓｉｔｙｈａｖｅｂｅｅｎｄｅｒｉｖｅｄ,ａｎｄｔｈｅｓｉｚｅｏｆｔｈｅｓｐｅｃｋｌｅｃｅｌｌｈａｓｂｅｅｎｃｏｍｐｕｔｅｄ.Ｔｈｅａｎａｌｙｓｉｓｉｎｄｉｃａｔｅｓｔｈａｔｔｈｅｍｅａｎｉｎｔｅｎｓｉｔｙｏｆｔｈｅｓｐｅｃｋｌｅｐａｔｔｅｒｎｓｉｓｃｌｏｓｅｌｙｒｅｌａｔｅｄｔｏｔｈｅｒａｔｉｏｏｆｔｈｅｌａｔｅｒａｌｃｏｒｒｅｌａｔｉｏｎｌｅｎｇｔｈｔｏｔｈｅｓｕｒｆａｃｅｒｏｏｔ ｍｅａｎ ｓｑｕａｒｅｈｅｉｇｈｔｏｆｔｈｅｓｕｒｆａｃｅ.Ｗｈｅｒｅａｓｔｈｅｓｉｚｅｏｆｔｈｅｓｐｅｃｋｌｅｃｅｌｌａｎｄｔｈｅｃｏｒｒｅｌａｔｉｏｎｄｅｇｒｅｅｏｆｔｈｅｓｐｅｃｋｌｅｉｎｔｅｎｓｉｔｉｅｓａｒｅｓｈｏｗｎｔｏｂｅｉｎｄｅｐｅｎｄｅｎｔｏｆｔｈｅｐａｒａｍｅｔｅｒｓｃｈａｒａｃｔｅｒｉｚｉｎｇｔｈｅｒｏｕｇｈｎｅｓｓｏｆａｓｕｒｆａｃｅ,ａｎｄｏｎｌｙｄｅｔｅｒｍｉｎｅｄｂｙｔｈｅｌａ ｓｅｒｂｅａｍｗａｉｓｔ.
铁磁形状记忆合金Ni52.2Mn23.8Ga24的马氏体相变及其物理表征
Authors: Gao Shu-Xia  , Wang Wen-Hong  , Liu Zhu-Hong  , Chen Jing-Lan  , Wu Guang-Heng  , Liang Ting  , Xu Hui-Bin  , ＣａｉＷｅｉ  , ＺｈｅｎｇＹｕ Ｆｅｎｇ  , Zhao Lian-Cheng  ,   (1)北京航空航天大学材料科学与工程系,北京100083; (2)哈尔滨工业大学材料科学与工程学院,哈尔滨150001; (3)中国科学院物理研究所磁学国家重点实验室,北京100080
Published: December 2020

ＷｅｈａｖｅｍｅａｓｕｒｅｄｔｈｅｔｒａｎｓｆｏｒｍａｔｉｏｎｔｅｍｐｅｒａｔｕｒｅｏｆＮｉ52 . 2 Ｍｎ2 3 . 8Ｇａ2 4ｓｉｎｇｌｅｃｒｙｓｔａｌｌｉｎｅｓａｍｐｌｅｂｙｖａｒｉｏｕｓｍｅｔｈｏｄｓ,ｓｕｃｈａｓＤＳＣ ,ｍａｇｎｅｔｉｚａｔｉｏｎ ,ａｃｍａｇｎｅｔｉｃｓｕｓｃｅｐｔｉｂｉｌｉｔｙ,ｄｃｒｅｓｉｓｔａｎｃｅ,ａｎｄｔｒａｎｓｆｏｒｍａｔｉｏｎｓｔｒａｉｎ .Ｃｏｍｐａｒｉｎｇｔｈｅｅｘｐｅｒｉｍｅｎｔａｌｒｅｓｕｌｔｓｂｅｔｗｅｅｎｅａｃｈｏｔｈｅｒ,ｗｅｆｏｕｎｄｔｈａｔ,ｄｕｅｔｏｔｈｅｄｉｆｆｅｒｅｎｔｐｈｙｓｉｃａｌｍｅｃｈａｎｉｓｍ ,ｖａｒｉｏｕｓｍｅａｓｕｒｉｎｇｍｅｔｈｏｄｓｗｉｌｌｇｉｖｅｄｉｆｆｅｒｅｎｔｍａｒ ｔｅｎｓｉｔｉｃｔｒａｎｓｆｏｒｍａｔｉｏｎｔｅｍｐｅｒａｔｕｒｅｓ.Ｂａｓｅｄｏｎｔｈｅｓｅｏｂｓｅｒｖａｔｉｏｎｓ,ｗｅｓｕｇｇｅｓｔａｍｕｌｔｉ ｓｔｅｐｌａｔｔｉｃｅｄｅｆｏｒｍａｔｉｏｎｆｏｒｔｈｅｔｒａｎｓｆｏｒｍａ ｔｉｏｎｏｆＮｉＭｎＧａ,ｗｈｉｃｈｉｓｓｉｍｉｌａｒｔｏｔｈｅＧ Ｔｒｅｌａｔｉｏｎ .ＴｈｅｗｈｏｌｅｐｒｏｃｅｓｓｏｆｔｒａｎｓｆｏｒｍａｔｉｏｎｃａｎｂｅｏｂｓｅｒｖｅｄｂｙＤＳＣａｎｄＲ Ｔｍｅａ ｓｕｒｅｍｅｎｔｓ ,ｗｈｉｌｅｔｈｅｍａｇｎｅｔｉｃｍｅａｓｕｒｅｍｅｎｔｓｉｓｏｎｌｙｓｅｎｓｉｔｉｖｅｔｏｔｈｅｆｏｒｍａｔｉｏｎｏｆｍａｒｔｅｎｓｉｔｉｃｌａｔｔｉｃｅｓ.Ｔｈｅｍｅａｓｕｒｅｍｅｎｔｏｎｔｒａｎｓ ｆｏｒｍａｔｉｏｎｓｔｒａｉｎｉｓｎｏｔｓｏｒｅｌｉａｂｌｅｆｏｒｔｈｅｔｒａｎｓｆｏｒｍａｔｉｏｎｔｅｍｐｅｒａｔｕｒｅａｓｔｈｅｏｔｈｅｒｍｅａｓｕｒｅｍｅｎｔｓ,ｂｕｔｉｔｒｅａｌｌｙｒｅｆｌｅｃｔｓｔｈｅｓｉｔｕａｔｉｏｎｏｆｔｈｅｓｕｂ ｓｔｒｕｃｔｕｒｅｓ,ｓｕｃｈａｓｔｗｉｎｂｏｕｎｄａｒｉｅｓ,ｖａｒｉａｎｔｓａｎｄｄｅｆｅｃｔｓｉｎｔｈｅｍａｔｅｒｉａl.
准Λ型四能级系统中的超窄谱线的研究
Authors: Zhang Xiang-Yang  , Li Yong-Fang  , Sun Jian-Feng  , Wang Yong-Chang  ,   (1)陕西师范大学物理学与信息技术学院,西安710062; (2)西安交通大学理学院,现代物理研究所,西安710049
Published: December 2020

ＷｅｐｒｅｓｅｎｔａｎｅｗＱｕａｓｉ Λ ｍｏｄｅｌ ｆｏｕｒ ｌｅｖｅｌｓｙｓｔｅｍｂａｓｅｄｏｎａｇｅｎｅｒａｌｔｈｒｅｅ ｌｅｖｅｌΛ ｍｏｄｅｌａｎｄｉｎｖｅｓｔｉｇａｔｅｔｈｅｒｅｓｏｎａｎｔｆｌｕｏｒｅｓｃｅｎｃｅｓｐｅｃｔｒｏｓｃｏｐｙｉｎｄｅｔａｉｌ.Ｔｈｅｒｅａｒｅｔｈｒｅｅｕｌｔｒａ ｎａｒｒｏｗｓｐｅｃｔｒａｌｌｉｎｅｓｉｎｔｈｅｓｐｏｎｔａｎｅｏｕｓｅｍｉｓｓｉｏｎｓｐｅｃｔｒａｆｒｏｍｕｐｐｅｒｌｅｖｅｌｔｏｌｏｗｅｒ ｌｙｉｎｇｌｅｖｅｌｓｏｆｔｈｅｔｗｏｅｍｉｓｓｉｏｎｃｈａｎｎｅｌｓ,ｗｈｉｃｈｏｃｃｕｒｏｖｅｒａｗｉｄｅｒａｎｇｅｏｆｔｈｅｐａｒａｍｅｔｅｒｓ.Ｔｈｅａｐｐｅａｒａｎｃｅｏｆｔｈｅｔｈｒｅｅｕｌｔｒａ ｎａｒｒｏｗｓｐｅｃｔｒａｌｌｉｎｅｓｉｓｃｌｏｓｅｌｙｒｅｌａｔｅｄｗｉｔｈＲａｂｉｆｒｅｑｕｅｎｃｙｏｆｔｈｅｔｗｏｃｏｈｅｒｅｎｃｅｄｒｉｖｉｎｇｆｉｅｌｄｓ;ａｎｄｔｈｅｌａｒｇｅｒｔｈｅＲａｂｉｆｒｅｑｕｅｎｃｙ ,ｔｈｅｎａｒｒｏｗｅｒｔｈｅｌｉｎｅｓ.Ｔｈｅｅｆｆｅｃｔｏｆｌｉｎｅｎａｒｒｏｗｉｎｇｄｏｅｓｎ’ｔｏｃｃｕｒｗｈｅｎｔｈｅｒｅｉｓｏｎｌｙａｃｏｈｅｒｅｎｃｅｄｒｉｖｉｎｇｆｉｅｌｄ .Ｗｈｉｌｅｔｈｅｉｎｃｏｈｅｒｅｎｔｔｒａｎｓｉｔｉｏｎａｎｄｔｈｅｃｏｌｌｉｓｉｏｎａｌｄｅｃａｙｂｅｔｗｅｅｎｔｈｅｅｎｅｒｇｙｌｅｖｅｌｓｄｅｓｔｒｏｙｔｈｅｆｅａｔｕｒｅｏｆｔｈｅｓｐｅｃｔｒａｌｎａｒｒｏｗｉｎｇｗｈｉｃｈｍａｙｂｅｃｏｎｓｉｄｅｒｅｄｔｏｂｅｔｈｅｒｅｓｕｌｔｏｆｔｈｅｍｕｌｔｉ ｃｈａｎｎｅｌｑｕａｎｔｕｍｉｎｔｅｒｆｅｒｅｎｃｅ.
Cross-talk between individual phenol-soluble modulins in Staphylococcus aureus biofilm enables rapid and efficient amyloid formation
Authors: Zaman Masihuz , Andreasen Maria
Published: December 2020

The infective ability of the opportunistic pathogen Staphylococcus aureus, recognized as the most frequent cause of biofilm-associated infections, is associated with biofilm-mediated resistance to host immune response. Phenol-soluble modulins (PSM) comprise the structural scaffold of S. aureus biofilms through self-assembly into functional amyloids, but the role of individual PSMs during biofilm formation remains poorly understood and the molecular pathways of PSM self-assembly are yet to be identified. Here we demonstrate high degree of cooperation between individual PSMs during functional amyloid formation. PSMα3 initiates the aggregation, forming unstable aggregates capable of seeding other PSMs resulting in stable amyloid structures. Using chemical kinetics we dissect the molecular mechanism of aggregation of individual PSMs showing that PSMα1, PSMα3 and PSMβ1 display secondary nucleation whereas PSMβ2 aggregates through primary nucleation and elongation. Our findings suggest that various PSMs have evolved to ensure fast and efficient biofilm formation through cooperation between individual peptides.
La inacusatividad y la alternancia causativa. El caso de los clíticos marginales en el español rioplatense
Authors: Arias Juan José
Published: December 2020

El siguiente artículo pretende analizar la presencia del clítico marginal la en estructuras inacusativas del español rioplatense,  más específicamente con un subgrupo de los llamados verbos existenciales-presentacionales (Masullo 2014), los cuales comprenden distintos tipos de verbos de compleción gradual (Rappaport-Hovav 2015): verbos de cambio de estado de escala abierta o de múltiples puntos (e.g. adelgazarla, empeorarla, mejorarla), de escala cerrada o de dos puntos (e.g. morirla, pirarla, palmarla), como así también verbos de movimiento o cambio de ubicación (e.g. aparecerla, llegarla, volverla). Basada en los principios de la Morfología Distribuida (Halle & Marantz 1993, y trabajos posteriores), nos proponemos demostrar que la presencia de este clítico acusativo con verbos inacusativos se trata de un fenómeno productivo y composicional del español rioplatense. En concreto, postulamos que la es un clítico morfológico o post-sintáctico (Pujalte & Saab 2012), en tanto es un elemento con propiedades expletivas no presente en la sintaxis que se inserta en FF.  Argumentaremos a favor de que la es un alomorfo de Ø y que ambos exponentes compiten con el clítico anticausativo se para lexicalizar rasgos asociados al núcleo Voz. En líneas generales, los datos analizados de la variedad rioplatense ofrecen evidencia a favor de que la ausencia de se en las variantes anticausativas simples no debe equipararse con la ausencia de estructura, sino más bien con la presencia de un morfema nulo Ø en la posición de Voz.
Development and Effects of a Physical Activity Promotion Programs for Elderly Patients Hospitalized in Long-term Care Hospital
Authors: Ryu Se In , Kim Aekyung
Published: December 2020

Purpose: The purpose of this study was to develop a physical activity promotion program and identify it's effects on physical fitness, fall efficacy, vitality, happiness, and adaptation for older adults hospitalized in long-term care hospital.Methods: The research design was a quasi-experimental, nonequivalence control group design. Older adults in long-term care hospitals were assigned to the experimental (n=28) or control group (n=27). The experimental group received a 12-week program consisting of total of 60 sessions, 5 times a week for 20-40 minutes per day.Results: The homogeneity test for the participant physical performance showed no statistically significant differences between the two groups. There were a statistical significant differences between the two groups in muscular strength (Right t=13.81, p=.001, Left t=48.91, p=.001), muscle endurance (t=99.50, p=.001), cardiopulmonary endurance (t=50.12, p=.001), coordination (t=-7.94, p=.001), balance existed (t=-4.84, p=.001), flexibility (t=20.23, p=.001), fall efficacy (t=6.06, p=001), vitality (t=7.01, p=.001) and happiness (t=3.95, p=.001). There was no significant statistical difference between the experimental group and the control group for adaptation (t=0.74, p=.460).Conclusion: The results of this research supports the use of the physical activity promotion program developed in this research as a physical activity and happiness promoting program for older adults in long-term care hospital.
Breve análisis de la feminización de la pobreza en Chile
Authors: Baeza Leiva Mónica
Published: December 2020

Chile ha presentado una mejora en sus índices de pobreza en general como la mayoría de los países de América Latina y el Caribe. Sin embargo, los índices de pobreza femenina se han elevado, no obstante la implementación de políticas públicas de igualdad de género que se vienen aplicando desde los años 90. ¿Cuál es el motivo de la obtención de estos resultados? El concepto de interseccionalidad y la transversalización del enfoque de género en la pobreza femenina resultan fundamentales para entender estos resultados.
Algunas reflexiones para analizar la gubernamentalidad neoliberal y a quienes la impugnan
Authors: Collado Mazzeo Patricia
Published: December 2020

En este escrito nuestro objetivo es reflexionar acerca de las formas de ejercicio del poder que impone el neoliberalismo. Para ello seguimos algunas de las pistas que nos ofrece M. Foucault desde una perspectiva crítica, en función del análisis sobre las transformaciones acaecidas en el dominio de los cuerpos, el territorio y la población en Latinoamérica, en las últimas décadas. A esta nueva colonización expropiatoria (de las energías del cuerpo, los bienes comunes y la ciudadanía social), se le enfrentan, diversos modos de recusación o contraconductas que a su modo impugnan la gestión neoliberal, planteando un desafío central: el dilema entre sólo-la-vida, umbral último de sobrevivencia de la población y la vida digna de ser vivida, aquella que se funda en las necesidades de cada comunidad. La biopolítica neoliberal actualiza, para nosotros, la confrontación sobre ¿cómo vivir?, ¿con qué vivir?, ¿para quién o para qué vivir?
Las personas relacionadas en la Ley Nº 20.720. Consecuencias y comentarios críticos.
Authors: Alarcón Cañuta Miguel Angel
Published: December 2020

La incorporación de la institución de las personas relacionadas en la Ley Nº 20.720, coincidente con el principio de respeto de la par condicio creditorum, importa una novedad para nuestra legislación. Por otro lado, la importancia de las personas relacionadas en la permanencia de la empresa en vías o situación de insolvencia, liga esta institución con la refinanciación en todos aquellos casos en que sean personas relacionadas las que otorgan un salvavidas ante la situación de crisis. Desde el fundamento tenido en cuenta por el legislador a la hora de incorporar y regular los efectos de las «personas relacionadas», principalmente la subordinación de sus créditos, se efectúa un juicio crítico en torno a la conveniencia o no de la incorporación y de la regulación propiamente tal de esta figura, sus implicancias en el proceso concursal desde el punto de vista de la certeza jurídica de los acreedores personas relacionadas, y principalmente, sus consecuencias en materia de reestructuración y refinanciación de personas en situación de crisis o insolvencia.
Quantification of Piperine by TLC Densitometer Method and Forced Degradation Study in a Classical Ayurvedic Formulation-Trikatu Churna
Authors: Qadir Abdul , Ansari Shahid Husain , Ahmad Sayeed , Ahmad Adil , Taleuzzaman Mohamad
Published: December 2020

Developed a thin layer chromatography (TLC) method for the quantification of piperine in Trikatu Churna formulation it is a major and important ingredient in the formulation. TLC methods for the determination of piperine in the Trikatu churna along with its raw materials have been developed, as per the ICH guideline. The developed method has been validated, experimented with parameters like linearity, accuracy, the limit of detection, the limit of quantification, inter-day and intra-day assay precision, repeatability of measurement, and repeatability of a sample application. Performed a degradation study in different conditions. Prepared a calibration curve in the concentration range (100-800 ng/spot) with correlation coefficients r2 (0.997) with Rf value 0.46 ± 0.03. The Limit of detection (LOD) and Limit of quantification (LOQ) value has 100 ng and 329 ng, respectively. The maximum degradation found in the bench top (98%) follow with an acidic condition (86%), almost similar in the range of condition basic, oxidation and wet (75-77%), and a minimum in dry heat condition (49%). The freeze-thaw stability study, the accelerated stability study, the real-time stability study result of these conditions almost is the same range (92-99%).
Quality Analysis for Different Samples of Fats
Authors: Shehata E. E.
Published: December 2020

Fats and oils are essential in human nutrition, and an important component of many foods where they significantly contribute to product quality. The quality of different samples of fats from various companies in Saudi Arabia was determined based on its physicochemical properties such as melting point, moisture, acid value, free fatty acid, peroxide value and insoluble impurities. Four samples were selected randomly as goody, hanaa, fork & spoon and Mazola. The percentage of the moisture was found to be 0.167±0.0438, 0.1045±0.0021, 0.061±0.0141 and 0.101±0.0339%, respectively for goody, hanaa, fork & spoon and mazola. The acid values were found to be 0.1402, 0.148, 0.151 and 0.220 mg NaOH/g for goody, hanaa, fork & spoon, and mazola, respectively. The free fatty acid was found to be 0.0989, 0.105, 0.106 and 0.155% for goody, hanaa, fork & spoon and mazola, respectively. The peroxide values were found to be 4.25±0.0141, 3.245±0.0353, 1.145±0.1485 and 5.15±0.0707 m.eqO2/Kg for goody, hanaa, fork &spoon, and mazola, respectively. The percent of insoluble impurities was found to be 1.61, 0.71, 1.32 and 1.33% for goody, hanaa, fork & spoon and Mazola, respectively. The melting points were found to be 40±0, 35±0, 33.5±0.707 and 39±0°C for goody, hanaa, fork & spoon, and Mazola, respectively.
Development and Feasibility of a Very Low-cost, Home-made, Near Infrared lymphatic Imaging Device
Authors: Montoya P. T. Luis López , Valadez M. D. Luis Roberto García , López P. T. Yucari , Sandoval P. T. Joceline , Montoya P. T. Angel López , Alcaraz P. T. Itzel , Paz P. T. Claudia
Published: December 2020

Introduction: Near Infrared (NIR), lymphatic Imaging is an emergent imaging                    technique used to assess superficial lymphatic structures and its function. It uses a                      NIR light source and a special camera that detects the fluorescence of a non-radioactive             dye called indocyanine green (ICG), which is injected subdermally and its way through       lymphatic capillaries, making this device useful in the diagnosis and follow up of lymphatic diseases.

Objective: To show (NIR) step-by-step development of a feasible, user-friendly, and low-cost homemade Near Infrared (NIR) lymphatic imaging device.

Methods: Using worldwide available components such as a customized laser and a modified webcam, we assembled what is a functional plug and play NIR lymphatic imaging device and evaluated its function with a 25-year-old healthy woman.

Conclusion: It is feasible to build a functional, homemade, low-cost Near Infrared (NIR) lymphatic imaging device in a tenth of its value.
Multiple-Antibiotic Resistance and Presence of CTX-M Genes among Enterobacteriaceae Isolates from Different Sources in Iwo, Osun State, Nigeria
Authors: A. Adeleke, Olufeyikemi , A. Owoseni, Abimbola
Published: December 2020

Aims: Assessment of the antibiotic resistance pattern and detection of genes responsible for the β-lactam resistance in enterobacteria isolated from different sources was carried out in the course of the study.

Place and Duration of Study: Samples from different sources in Iwo, Osun State, Nigeria including Abattoir and Cow ranch. The study was done August 2015 to May 2016.

Methodology: Isolation was done on nutrient agar, xylose lysine deoxycholate (XLD) and identified using standard procedures. Antibiotic multidisc containing the following ceftazidime (30 µg), cefruroxime (30 µg), gentamicin (10 µg), ciprofloxacin (5 µg), ofloxacin (5 µg), augmentin (30 µg), nitrofurantoin (300 µg), and ampicillin ( ) were used to study the resistance patterns of the bacteria. Polymerase chain reaction (PCR) method was carried out to screen for CTX-M gene in beta-lactam resistant isolates and statistical analyses were carried out using the analysis of variance test (ANOVA) and the PAST (paleontology statistics) software analytical package where applicable.

Results: Fifty-two (52) entrobacteria consisting of nine genera (9) were isolated and identified, Serratia (13), Enterobacter (11), Klebsiella (6), E. coli (5), Proteus (5), Salmonella (3), Shigella (3), Citrobacter (3), and Yersinia (3). The highest resistance observed by the isolates was to ampicillin (80.7%) followed by augmentin (40%) and 33% resistance of the isolates to cefuroxime, while all the isolates were sensitive to ceftazidime, gentamicin, ofloxacin, ciprofloxacin and nitrofurantoin. Nineteen of the isolates were resistant to three or more of the tested antibiotics i.e. multiple resistance while five of the multidrug resistant isolates show the presence of CTX-M β-lactam resistance gene which seems to be responsible for their resistance to the β-lactam antibiotic tested.

Conclusion: There are a number of organisms in the environment that have developed multiple resistances to several antibiotics and in view of this thwart treatment; of major concern are the Enterobacteriaceae family in which new resistance characteristics have been discovered leading to increasing resistance to standard available drug therapies.
The Impact of a Medical Education Research Faculty Development Program on Career Development, Through the Lens of Social Cognitive Career Theory
Authors: Jordan Jaime , Coates Wendy C. , Gottlieb Michael , Soares William E. , Shah Kaushal H. , Love Jeffrey N.
Published: December 2020

Objectives

The Medical Education Research Certificate at the Council of Residency Directors in Emergency Medicine (MERC at CORD), a specialized adaptation of the Association of American Medical Colleges MERC program, provides faculty development in education research in emergency medicine. However, its long‐term influence on career development remains unknown. Our study explored the impact of MERC at CORD on career development through the lens of social cognitive career (SCC) theory.

Methods

This was a prospective qualitative study using a constructivist/interpretivist paradigm to assess long‐term career development outcomes. A purposeful randomized stratified sampling strategy of MERC at CORD graduates (2011–2014) ensured diversity of representation (sex, region, number of research publications, and project group leadership). Subjects were invited by e‐mail to participate in semistructured phone interviews. Thematic analysis by two independent reviewers followed an iterative process until saturation was reached.

Results

Twelve graduates were interviewed. All engaged with MERC at CORD early in their careers with minimal previous education research experience. Currently, all hold medical education leadership positions. Graduates had a mean of 19.3 publications (range = 9–43). Themes explaining reasons for participating in MERC at CORD include: desire for education research skills, recommendation of mentors/colleagues, and accessibility. Themes citing the program’s value to career development include networking/collaboration, mentorship, informational framework to build upon, and the application of theoretical knowledge through experiential learning. MERC at CORD impacted career development aligning with the core domains of SCC theory including self‐efficacy, outcome expectations, and goals.

Conclusion

MERC at CORD enhanced the long‐term career development of participants by providing a core knowledge framework in a mentored, experiential learning environment. Participants identified themes aligned with SCC theory as influential in their long‐term career advancement in medical education including the development of education research skills, successful completion of education research, career acceleration, promotion, niche development, and formulation of professional goals.
The Characteristics of Disulfide‐Centered Hydrogen Bonds
Authors: Li Xiaolong , Lu Tao , Obenchain Daniel A. , Zhang Jiaqi , Herbers Sven , Grabow Jens‐Uwe , Feng Gang
Published: December 2020

The disulfide‐centered hydrogen bonds in the three different model systems of diethyl disulfide⋅⋅⋅H2O/H2CO/HCONH2 clusters were characterized by high‐resolution Fourier transform microwave spectroscopy and quantum chemical computations. The global minimum energy structures for each cluster are experimentally observed and are characterized by one of the three different S−S⋅⋅⋅H−C/N/O disulfide‐centered hydrogen bonds and two O⋅⋅⋅H−C hydrogen bonds. Non‐covalent interaction and natural bond orbital analyses further confirm the experimental observations. The symmetry‐adapted perturbation theory (SAPT) analysis reveals that electrostatic is dominant in diethyl disulfide⋅⋅⋅H2O/HCONH2 clusters being consistent with normal hydrogen bonds, whilst dispersion takes over in diethyl disulfide⋅⋅⋅H2CO cluster. Our study gives accurate structural parameters for the disulfide bond involved non‐covalent clusters providing important benchmarking data for the theoretical evaluation of more complex systems.
Zn‐Cu‐In‐S‐Se Quinary “Green” Alloyed Quantum‐Dot‐Sensitized Solar Cells with a Certified Efficiency of 14.4 %
Authors: Song Han , Lin Yu , Zhou Mengsi , Rao Huashang , Pan Zhenxiao , Zhong Xinhua
Published: December 2020

The photoelectronic properties of quantum dots (QDs) have a critical impact on the performance of quantum‐dot‐sensitized solar cells (QDSCs). Currently, I‐III‐VI group QDs have become the mainstream light‐harvesting materials in high‐performance QDSCs. However, it is still a great challenge to achieve satisfactory efficiency for light‐harvesting, charge extraction, and charge collection simultaneously in QDSCs. We design and prepare Zn0.4Cu0.7In1.0SxSe2−x (ZCISSe) quinary alloyed QDs by cation/anion co‐alloying strategy. The critical photoelectronic properties of target QDs, including band gap, conduction band energy level, and density of defect trap states, can be conveniently tailored. Experimental results demonstrate that the ZCISSe quinary alloyed QDs can achieve an ideal balance among light‐harvesting, photogenerated electron extraction, and charge‐collection efficiencies in QDSCs compared to its single anion or cation quaternary alloyed QD counterparts. Consequently, the quinary alloyed QDs boost the certified efficiency of QDSCs to 14.4 %, which is a new efficiency record for liquid‐junction QD solar cells.
Macrocyclic glycopeptide‐based chiral selectors for enantioseparation in sub/supercritical fluid chromatography
Authors: Folprechtová Denisa , Kalíková Květa
Published: December 2020

Increasing number of reported works dealing with macrocyclic glycopeptide‐based columns in sub/supercritical fluid chromatography (SFC) points to the growing interest in this area. With the development and production of sub 2 µm fully porous particles and superficially porous particles with bonded macrocyclic glycopeptides, significant improvements have been made in ultrafast high efficiency chiral SFC. This review article gives an overview of macrocyclic glycopeptide‐based chiral selectors that were used in theoretical studies and/or applications in SFC. The review covers the period from 1997 when macrocyclic glycopeptides were first used in SFC till the end of July 2020 according to Web of Science. This work can also be helpful to analysts searching for an appropriate method for the separation/determination of enantiomers of their interest.
Study of Tofacitinib in Refractory Dermatomyositis: An Open‐Label Pilot Study of Ten Patients
Authors: Paik Julie J. , Casciola‐Rosen Livia , Shin Joseph Yusup , Albayda Jemima , Tiniakou Eleni , Leung Doris G. , Gutierrez‐Alamillo Laura , Perin Jamie , Florea Liliana , Antonescu Corina , Leung Sherry G. , Purwin Grazyna , Koenig Andrew , Christopher‐Stine Lisa
Published: December 2020

Objective

This open‐label 12‐week study was conducted to evaluate the efficacy and safety of tofacitinib, a JAK inhibitor, in treatment‐refractory active dermatomyositis (DM).

Methods

Tofacitinib in extended‐release doses of 11 mg was administered daily to 10 subjects with DM. Prior to treatment, a complete washout of all steroid‐sparing agents was performed. The primary outcome measure was assessment of disease activity improvement based on the International Myositis Assessment and Clinical Studies group definition of improvement. Response rate was measured as the total improvement score according to the 2016 American College of Rheumatology (ACR)/European League Against Rheumatism (EULAR) myositis response criteria. Secondary outcome measures included Cutaneous Dermatomyositis Disease Area and Severity Index (CDASI) scores, chemokine levels, immunohistochemical analysis of STAT1 expression in the skin, RNA sequencing analysis, and safety.

Results

At 12 weeks, the primary outcome was met in all 10 subjects. Five (50%) of 10 subjects experienced moderate improvement in disease activity, and the other 50% experienced minimal improvement according to the 2016 ACR/EULAR myositis response criteria. The secondary outcome of the mean change in the CDASI activity score over 12 weeks was statistically significant (mean ± SD 28 ± 15.4 at baseline versus 9.5 ± 8.5 at 12 weeks) (P = 0.0005). Serum chemokine levels of CXCL9/CXCL10 showed a statistically significant change from baseline. A marked decrease in STAT1 signaling in association with suppression of interferon target gene expression was demonstrated in 3 of 9 skin biopsy samples from subjects with dermatomyositis. The mean ± SD level of creatine kinase in the 10 subjects at baseline was 82 ± 34.8 IU/liter, highlighting that disease activity was predominantly located in the skin.

Conclusion

This is the first prospective, open‐label clinical trial of tofacitinib in DM that demonstrates strong clinical efficacy of a pan‐JAK inhibitor, as measured by validated myositis response criteria. Future randomized controlled trials using JAK inhibitors should be considered for treating DM.
Nowcasting the COVID‐19 pandemic in Bavaria
Authors: Günther Felix , Bender Andreas , Katz Katharina , Küchenhoff Helmut , Höhle Michael
Published: December 2020

To assess the current dynamics of an epidemic, it is central to collect information on the daily number of newly diseased cases. This is especially important in real‐time surveillance, where the aim is to gain situational awareness, for example, if cases are currently increasing or decreasing. Reporting delays between disease onset and case reporting hamper our ability to understand the dynamics of an epidemic close to now when looking at the number of daily reported cases only. Nowcasting can be used to adjust daily case counts for occurred‐but‐not‐yet‐reported events. Here, we present a novel application of nowcasting to data on the current COVID‐19 pandemic in Bavaria. It is based on a hierarchical Bayesian model that considers changes in the reporting delay distribution over time and associated with the weekday of reporting. Furthermore, we present a way to estimate the effective time‐varying case reproduction number based on predictions of the nowcast. The approaches are based on previously published work, that we considerably extended and adapted to the current task of nowcasting COVID‐19 cases. We provide methodological details of the developed approach, illustrate results based on data of the current pandemic, and evaluate the model based on synthetic and retrospective data on COVID‐19 in Bavaria. Results of our nowcasting are reported to the Bavarian health authority and published on a webpage on a daily basis (https://corona.stat.uni-muenchen.de/). Code and synthetic data for the analysis are available from https://github.com/FelixGuenther/nc_covid19_bavaria and can be used for adaption of our approach to different data.
Bone Regeneration of Maxillary Molar Proximal Class 2 Furcation Defects Treated With Microscope‐Assisted Papilla Preservation Technique and DFDBA: A Case Series
Authors: Do Jonathan H.
Published: December 2020

Introduction

Periodontal regeneration of maxillary molar proximal furcation defects are challenging due to limited access. While combination therapy of open flap debridement with barrier membrane, bone graft, and biologics are reported to be more successful than monotherapeutic approaches, combination therapy can be complicated and costly.

Case Presentation

A total of four teeth in three patients are presented to demonstrate radiographic bone regeneration of deep Class 2 maxillary molar proximal furcation defects (MMPFD) treated with microscope‐assisted papilla preservation technique (PPT) and demineralized freeze‐dried bone allograft (DFDBA).

Conclusion(s)

Radiographic bone regeneration of deep Class 2 MMPFD is possible with microscope‐assisted PPT and DFDBA. Furthermore, treatment outcomes appear to be superior to those from previous clinical trials of Class 2 MMPFD treatment.
Toward a head movement‐based system for multilayer digital content exploration
Authors: Bruno Alessandro , Moore Morgan , Zhang Jinglu , Lancette Stéphane , Ward Ville P. , Chang Jian
Published: December 2020

In this article, we propose a novel technique based on Head Movement tracking to explore multilayer digital content. We extend an existing method by Kazemi et al. dealing with the extraction of facial landmarks to define the “head‐gaze” of the user. We use the “head‐gaze” to calculate the users' on‐screen coordinates. Hovering the cursor over an interactive area for a given time threshold allows users to explore the next layer contents. Our experimental sessions allowed us to measure the technique's level of control and usability. Our results were promising, and users were able to interact with considerably small regions. Furthermore, our lightweight method can be used with a low‐cost camera or webcam and a wide range of screen sizes and distances.
A New Synthetic Strategy Leading to Homochiral Macrocycles Derived from 2,6‐Diformylpyridine and (1S,2S)‐trans‐1,2‐Diaminocyclopentane
Authors: Gregoliński Janusz , Ślepokura Katarzyna , Bil Andrzej , Lisowski Jerzy
Published: December 2020

The condensation of enantiopure trans‐1,2‐diaminocyclopentane (DACP) with 2,6‐diformylpyridine (DFP) followed by reduction results in a mixture of 2+2, 3+3, 4+4, and 5+5 macrocyclic amines. The replacement of DACP in this condensation with the 2+1 diamine containing two DACP and one DFP moieties afforded the 4+4 macrocycle as the main product together with a giant 6+6 macrocycle. Conversely, a similar reaction of DACP with the 1+2 dialdehyde, comprising of one DACP and two DFP units, results in the 2+2 macrocycle, whereas the condensation of both 2+1 diamine and 1+2 dialdehyde precursors delivers selectively the 3+3 macrocycle. The formation of larger macrocycles in the condensation of the 2+1 primary diamine with DFP and lack of such preference in the reaction of DACP with the 1+2 dialdehyde was supported by theoretical calculations. The crystal structures of the protonated 2+2, 3+3, 4+4 and 6+6 macrocyclic amines indicate binding of chloride or sulfate anions within the macrocycles.
Homotopic reduction in laser‐evoked potential amplitude and laser‐pain rating by abdominal acupuncture
Authors: Valeriani Massimiliano , Liguori Stefano , Vollono Catello , Testani Elisa , Bangrazi Sergio , Petti Filomena , Liguori Aldo , Germanotta Marco , Padua Luca , Pazzaglia Costanza
Published: December 2020

Background

The neural mechanism underlying the analgesic effect of acupuncture is largely unknown. We aimed at investigating the effect of abdominal acupuncture (AA) on the laser‐evoked potential (LEP) amplitude and laser‐pain rating to stimulation of body parts either homotopic or heterotopic to the treated acupoint.

Methods

Laser‐evoked potentials were recorded from 13 healthy subjects to stimulation of the right wrist (RW), left wrist (LW) and right foot (RF). LEPs were obtained before, during and after the AA stimulation of an abdominal area corresponding to the representation of the RW. Subjective laser‐pain rating was collected after each LEP recording.

Results

The amplitude of the N2/P2 LEP component was significantly reduced during AA and 15 min after needle removal to both RW (F = 4.14, p = .02) and LW (F = 5.48, p = .008) stimulation, while the N2/P2 amplitude to RF stimulation (F = 0.94, p = .4) remained unchanged. Laser‐pain rating was reduced during AA and 15 min after needle removal only to RW stimulation (F = 5.67, p = .007).

Conclusion

Our findings showing an AA effect on LEP components to both the ipsilateral and contralateral region homotopic to the treated area, without any LEP change to stimulation of a heterotopic region, suggest that the AA analgesia is mediated by a segmental spinal mechanism.

Significance

Although abdominal acupuncture has demonstrated to be effective in the reduction in laser‐evoked potential (LEP) amplitude and laser‐pain rating, the exact mechanism of this analgesic effect is not known. In the current study, we found that treatment of an area in the “turtle representation” of the body led to a topographical pattern of LEP amplitude inhibition that can be mediated by a segmental spinal mechanism.
Construction of N, S‐co‐doped graphene/polyaniline composite as free‐standing electrode material
Authors: Du Xiangxiang , Shi Xuejun , Li Yanling , Cao Kesheng
Published: December 2020

Herein, N, S‐co‐doped graphene hydrogel (N/SGH) was first prepared by one‐pot feasible hydrothermal approach using thiourea as a dopant for both N and S sources. And then, polyaniline (PANI) was grown on the surface of N, S‐co‐doped graphene hydrogel via simple adsorption of aniline monomer and in situ polymerization process. The N, S‐co‐doped graphene/polyaniline (N/SGH/PANI) composite hydrogel was fabricated as a free‐standing and binder‐free electrode material. Due to the co‐doped synergistic effect, the N/SGH electrode exhibited enhanced electrochemical performances. The N/SGH electrode displays a specific capacitance of 130.4 F/g at 0.5 A/g. Compared with pure graphene hydrogel (GH), the specific capacitance of N/SGH and N‐doped graphene (NGH) electrodes at 0.5 A/g increased by 53% and 20%, respectively. PANI pseudocapacitor material was introduced to further improve its capacitive performance. The resultant N/SGH/PANI composite electrode could achieve a max specific capacitance of 236.5 F/g at 0.5 A/g. In addition, N/SGH/PANI composite electrode showed stable cycle performance with the capacity retention of 95.1% after 1000 cycles performed at 10 A/g. Those provide a fabrication strategy for the design of high‐performance supercapacitors electrode materials.
A formal adversarial perspective: Secure and efficient electronic health records collection scheme for multi‐records datasets
Authors: Kanwal Tehsin , Anjum Adeel , Khan Abid , Asheralieva Alia , Jeon Gwanggil
Published: December 2020

The collection of private health data without compromising privacy is an imperative aspect of privacy‐aware data collection mechanisms. Privacy‐preserved data collection is achieved by anonymizing private data before its transmission from data holders to data collectors. Though there exist ample literature on private data collection for 1:1 (single record of a data holder) datasets, collecting multi‐records (multiple records of a data holder) datasets (referred to as 1:M datasets) has not received due attention from the research community. Therefore, the current studies experience serious privacy breaches in 1:M dataset thereby limiting their application in secure healthcare applications and systems. In this work, we have formally classified main privacy disclosures on these data collection mechanisms and proposed an improved privacy scheme, namely, horizontal sliced permuted permutation (H‐SPP) for 1:M datasets. It uses the composite slicing and anatomy‐based approach to protect against the privacy violations like identity, attribute, and membership disclosures. Moreover, we perform formal modeling of the proposed scheme using high‐level Petri nets (HLPN) and show that it effectively prevents the identified external and internal privacy attacks. Experimental results show that H‐SPP provides robust privacy for health data with high performance.
Instanton calculations of tunneling splittings in chiral molecules
Authors: Sahu Nityananda , Richardson Jeremy O. , Berger Robert
Published: December 2020

We report the ground state tunneling splittings (ΔE±) of a number of axially chiral molecules using the ring‐polymer instanton (RPI) method (J. Chem. Phys., 2011, 134, 054109). The list includes isotopomers of hydrogen dichalcogenides H2X2 (X = O, S, Se, Te, and Po), hydrogen thioperoxide HSOH and dichlorodisulfane S2Cl2. Ab initio electronic‐structure calculations have been performed on the level of second‐order Møller–Plesset perturbation (MP2) theory either with split‐valance basis sets or augmented correlation‐consistent basis sets on H, O, S, and Cl atoms. Energy‐consistent pseudopotential and corresponding triple zeta basis sets of the Stuttgart group are used on Se, Te, and Po atoms. The results are further improved using single point calculations performed at the coupled cluster level with iterative singles and doubles and perturbative triples amplitudes. When available for comparison, our computed values of ΔE± are found to lie within the same order of magnitude as values reported in the literature, although RPI also provides predictions for H2Po2 and S2Cl2, which have not previously been directly calculated. Since RPI is a single‐shot method which does not require detailed prior knowledge of the optimal tunneling path, it offers an effective way for estimating the tunneling dynamics of more complex chiral molecules, and especially those with small tunneling splittings.
Retracted: Extracellular vesicle‐encapsulated microRNA‐425‐derived from drug‐resistant cells promotes non‐small–cell lung cancer progression through DAPK1‐medicated PI3K/AKT pathway
Authors: Guo Zhihua , Ye Huangyang , Zheng Xiaobin , Yin Weiqiang , He Jianxing
Published: December 2020

Investigations in the area of tumor‐derived extracellular vesicles (EVs) open a new horizon in developing cancer biology and its potential as cancer biomarkers. Following this prospect, we aimed to identify that the role of successfully isolated EVs from drug‐resistance cells in the progression of non‐small–cell lung cancer (NSCLC). P‐EVs and R‐EVs secreted by A549 cells and drug‐resistant A549‐R cells respectively were extracted and characterized. The targeting relationship between miR‐425 and MED1 was verified. Cell proliferation, invasion, migration and apoptosis after treatment of P‐EVs, R‐EVs, miR‐425 inhibitor, miR‐425 mimic, pcDNA‐MED1, or phosphatidylinositol‐3‐kinase (PI3K)/AKT inhibitor LY294002 were detected. Furthermore, xenograft tumor in nude mice was established for further confirming our in vitro findings. P‐EVs and R‐EVs were successfully extracted and could be internalized by A549 cells. A549‐R cells and R‐EVs showed higher miR‐425 expression compared with A549 cells and P‐EVs, respectively. miR‐425 delivered by R‐EVs could promote the proliferation, migration, and invasion, while inhibit apoptosis of NSCLC cells. MED1 was the target gene of miR‐425. EVs‐encapsulated miR‐425‐derived from A549‐R cells could promote the progression of NSCLC in vivo through regulating DAPK1‐medicated PI3K/AKT pathway. Moreover, miR‐425 delivered by R‐EVs promoted tumorigenesis in vivo. Taken together, the result suggested that EVs‐delivered miR‐425‐derived from A549‐R cells promoted the progression of NSCLC through regulating DAPK1‐medicated PI3K/AKT signaling pathway.
Histomorphological investigations on the lips of Rahmani sheep (Ovis aries): A scanning electron and light microscopic study
Authors: Madkour Fatma A. , Mohammed Elsayed S. I.
Published: December 2020

This study was conducted to provide comprehensive information on the anatomical and histological features of the upper (UL) and lower (LL) lips of Rahmani sheep by gross examination, morphometric analysis in addition to Light and scanning electron microscope (SEM). Samples from normal healthy adult male sheep heads were collected directly after slaughtering. UL and LL were dissected, and specimens were collected for both light and SEM. The UL was longer approximately by one‐fold and thicker by one‐fold at the median and the oral angle areas, and by one‐ and half‐folds at the paramedian area than the LL. The free border of both lips was characterized rostrally by the presence of labial projections. By SEM the edges of the inner aspect of the lips and of the philtrum were distinguished by labial projections. These projections which surrounding the philtrum subdivided into polygonal areas with numerous keratinized scales especially at the apical parts which increased dorsally toward the nostril. Most of the openings of the upper labial salivary glands were volcanic crater‐shaped while that of the lower labial salivary glands were various shapes; round folded margin, rosette and whirlpool shaped. Histologically, the shape of the projection or papillae differs at the median and paramedian areas of the UL than the LL. However, there was no differences near the oral angle area. In conclusion, the shape, size and amount of keratinization of the papillae may offer efficiency to the lips during feeding process.