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您的检索式:作者名="John Persing"
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| 1 | 全颅骨切开成形矫正早期矢状缝早闭头颅畸形显示文摘目的:探讨矢状缝早闭舟状头畸形的早期手术治疗方法。方法:患儿采取改良的俯卧位,通过头皮冠状切口显露从眉间至枕骨大孔后唇的整个颅盖,切开颅骨分离双侧额骨和双侧顶-枕部骨块。对额骨和枕骨进行放射状切开、塑形纠正前后部隆突畸形;切除部分额、顶骨块缩短头颅前后径;在颞、顶骨下部采用'木桶板'样截骨以及放射状切开、塑形两侧顶骨纠正头颅狭窄畸形。结果:手术后4例舟状头畸形明显改善,外形良好,无严重并发症。术后随访3~10月,头颅外形维持良好,畸形无复发。结论:包括双侧额、顶、枕、颞全颅骨切开重新塑形的手术方法能够有效地矫正婴幼儿矢状缝早闭舟状头畸形。 | 薄斌 John Persing | 2009 | 中国美容医学2009,18,1: | 2 |
| 2 | 颅缝早闭额眶后缩畸形的早期手术治疗显示文摘目的探讨颅缝早闭引起的额眶后缩畸形早期手术治疗的方法。方法本组共10例额眶后缩患者,年龄6-9个月。非综合征性颅缝早闭8例,其中额缝早闭2例、单侧冠状缝早闭3例、双侧冠状缝早闭3例;综合征性冠状缝早闭2例,分别为阿佩尔综合征(Apert syndrome)和克鲁宗综合征(Crouzon syndrome)各1例。采取双侧额顶部开颅,眶周“C”型截骨、前移以及额骨放射状骨切开塑形的方法纠正额眶后缩畸形。结果手术后额眶后缩畸形明显改善,外形良好,无严重并发症。8例术后随访3-11个月,颅面部外形维持良好,额眶后缩畸形无复发。结论额骨、眶周联合截骨塑形前移的方法能够有效地矫正颅缝早闭所致额眶后缩畸形。 | 薄斌 John Persing | 2009 | 中华口腔医学杂志2009,44,6: | 0 |
| 3 | QUASI STEADY-STATE HURRICANES REVISITED显示文摘We revisit the theoretical possibility of long-term, sustained tropical cyclone solutions using a state-of-the-art numerical model that incorporates the most recent observational guidance for subgrid scale parameters and airsea exchange coefficients of heat and momentum. Emphasis is placed on the realism of such solutions and the sources of cyclonic relative angular momentum(RAM) that are necessary to replenish that lost by friction at the surface. For simplicity, we confine our attention to strictly axisymmetric numerical experiments.We are able to replicate Hakim's long-term simulation of a quasi-steady state cyclone in a 1500 km radial domain. The structure of the wind field is found to be somewhat realistic compared to observations, but sustained by unrealistic processes. Artificial sources of cyclonic RAM are quantified and the lateral damping of the anticyclonic wind near the outer boundary is found to make the largest contribution to the source of cyclonic RAM. When the domain size is extended to 9,000 km radius and lateral damping is removed altogether, a quasi-steady vortex emerges, but the structure of this vortex has many unrealistic features. In this solution, the remaining upper-level Rayleigh damping contributes a major portion of the needed source of cyclonic RAM. In a simulation in which the upper-level damping is removed also, the solution is found to be neither quasi-steady nor realistic.These findings call into question the realism of long-term, sustained tropical cyclone simulations, which require a sufficiently large source of cyclonic RAM to facilitate the existence of a quasi-steady state. | JOHN PERSING MICHAEL T.MONTGOMERY ROGER K.SMITH JAMES C.MCWILLIAMS | 2019 | Tropical Cyclone Research and Review2019,8,1: | 0 |
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