It has been well known that the influxing meteoric water can hydrothermally lower oxygen and hydrogen isotopes of rocks and/or minerals during continental magmatic or metamorphic processes in certain appropriate cases. Its opposite, however, is not implicitly true and needs independent testing. In terms of a novel procedure recently proposed for dealing with thermodynamic re-equilibration of oxygen isotopes between constituent minerals and water from fossil hydrothermal systems, the initial oxygen isotopes of water ([Formula: see text]) are theoretically inverted from the early Cretaceous post-collisional granitoids and Triassic gneissic country rock across the Dabie orogen in central-eastern China.
View Article and Find Full Text PDFLin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi
January 2018
To explore the diagnosis,treatment,surgical approach and prognosis of parapharyngeal space tumors.The clinical data of 188 patients with parapharyngeal space tumor who were treated from January 2007 to December 2016 were analyzed retrospectively.All patients underwent imaging examination before operation.
View Article and Find Full Text PDFThe fruits of Psoralea corylifolia, known as Psoraleae Fructus (Buguzhi in Chinese), are traditionally used for the treatment of spermatorrhea, nephritis, asthma, pollakiuria, and various inflammatory diseases. Three previously undescribed isoflavone derivatives, 7-O-methylcorylifol A, 7-O-isoprenylcorylifol A, and 7-O-isoprenylneobavaisoflavone, have been isolated from the fruits of P. corylifolia, together with 9 known compounds.
View Article and Find Full Text PDFSince water is only composed of oxygen and hydrogen, δO and δH values are thus utilized to trace the origin of water(s) and quantify the water-rock interactions. While Triassic high pressure (HP) and ultrahigh pressure (UHP) metamorphic rocks across the Dabie-Sulu orogen in central-eastern China have been well documented, postcollisional magmatism driven hydrothermal systems are little known. Here we show that two sources of externally derived water interactions were revealed by oxygen isotopes for the gneissic country rocks intruded by the early Cretaceous postcollisional granitoids.
View Article and Find Full Text PDFTwo new sesquiterpenoids-13-hydroxycurzerenone () and 1-oxocurzerenone ()-have been isolated from the rhizomes of , together with 13 known compounds (-). The structures of two new compounds were determined through spectroscopic and MS analyses. Among the isolated compounds, 13-hydroxycurzerenone (), 1-oxocurzerenone (), curzerenone (), germacrone (), curcolone (), procurcumenol (), ermanin (), curcumin (), and a mixture of stigmast-4-en-3,6-dione () and stigmasta-4,22-dien-3,6-dione () exhibited inhibition (with inhibition % in the range of 21.
View Article and Find Full Text PDFZhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi
July 2012
Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi
June 2011
Objective: To explore the factors that influence the stability of evaluation results judged by a jury through a standard research on perceptual evaluation measurements of voice quality.
Methods: Voice samples from 300 patients with dysphonia and 100 control subjects with normal voice were recorded and assessed by a jury composed of 6 experienced listeners from different hospitals. The voice samples were discourse voices and ordered randomly 3 times, and the mean of 3 evaluations using visual analogue scale were the final results.
Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi
April 2011
Objective: To investigate the survival, growth and distribution of human amniotic epithelial cells (hAEC) after injected into injured rabbit vocal folds, in addition, to assess the ability of hAEC to affect the components of lamina propria extracellular matrix (ECM) and prevent vocal fold scarring.
Methods: hAEC were isolated from human amnion and marked by Lenti-EGFP. Fifteen New Zealand rabbits were used for this experiment.
Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi
February 2010
Objectives/hypothesis: Phonation threshold flow (PTF) may provide a tool to assess laryngeal function and could differentiate between normal and pathological voices. Both polyps and nodules contribute to an increased PTF by creating an incomplete glottal closure and increased vocal fold mass and thickness.
Study Design: Prospective study.
Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi
July 2008
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