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您的检索式：作者名="Jinrang Li"
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| 1 | Quick repositioning maneuver for horizontal semicircular canal benign paroxysmal positional vertigo显示文摘Objective:To investigate the efficacy of quick repositioning maneuver for horizontal semicircular canal benign paroxysmal positional vertigo(H-BPPV).Methods:Clinical data of 67 patients with H-BPPV who underwent quick repositioning maneuver in our hospital from July 2009 to November2014 were retrospectively analyzed.The maneuver involved rotating the patient in the axial plane for 180 from the involved side towards contralateral side as quickly as possible.Results:Complete symptom resolution was achieved in 61 patients(91.0%) at one week and in 64 patients(95.5%) at 3 months post-treatment.During the repositioning maneuver process,there were no obvious untoward responses except transient nausea with or without vomiting in a few patients.Conclusion:The results indicate that the quick repositioning maneuver is an easy and effective alternative treatment in the management of HBPPV. | Jinrang Li Pengfei Guo Shiyu Tian Keliang Li Hao Zhang | 2015 | Journal of Otology2015，10，3： | 6 |
| 2 | Age and metal source of orogenic gold deposits in Southeast Guizhou Province, China: Constraints from Re-Os and He-Ar isotopic evidence显示文摘The orogenic gold deposits in Southeast Guizhou are an important component of the Xuefeng polymetallic ore belt and have significant exploration potential, but geochronology research on these gold deposits is scarce. Therefore, the ore genetic models are poorly constrained and remain unclear. In the present study, two important deposits(Pingqiu and Jinjing) are investigated, including combined Re-Os dating and the He-Ar isotope study of auriferous arsenopyrites. It is found that the arsenopyrites from the Pingqiu gold deposit yielded an isochron age of 400 ± 24 Ma,with an initial ^(187)Os/^(188)Os ratio of 1.24 ± 0.57(MSWD = 0.96). An identical isochron age of 400 ± 11 Ma with an initial ^(187)Os/^(188)Os ratio of 1.55 ± 0.14(MSWD = 0.34) was obtained from the Jinjing deposit. These ages correspond to the regional Caledonian orogeny and are interpreted to represent the age of the main stage ore. Both initial ^(187)Os ratios suggest that the Os was derived from crustal rocks. Combined with previous rare earth element(REE), trace elements, Nd-Sr-S-Pb isotope studies on scheelite, inclusion fluids with other residues of gangue quartz, and sulfides from other gold deposits in the region, it is suggested that the ore metals from Pingqiu and Jinjing were sourced from the Xiajiang Group. The He and Ar isotopes of arsenopyrites are characterized by ~3 He/~4 He ratios ranging from 5.3 × 10^(-4) Ra to 2.5 × 10^(-2) Ra(Ra = 1.4 × 10^(-6), the ~3 He/~4 He ratio of air), 40 Ar=/~4 He ratios from 0.64 × 10^(-2) to 15.39×10^(-2), and ^(40)Ar/^(36)Ar ratios from 633.2 to 6582.0. Those noble gas isotopic compositions of fluid inclusions also support a crustal source origin,evidenced by the Os isotope. Meanwhile, recent noble gas studies suggest that the amount of in situ radiogenic ~4 He generated should not be ignored, even when Th and U are present at levels of only a few ppm in host minerals. | Jiasheng Wang Hanjie Wen Chao Li Jinrang Zhang Wei Ding | 2019 | Geoscience Frontiers2019，10，2： | 3 |
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