论文部分内容阅读
不同螺旋角螺旋折流板换热器壳程传热性能
【出 处】
：
石油化工设备
【发表日期】
：
2007年z1期
其他文献
Sedimentary architecture models of deepwater turbidite channel systems in the Niger Delta continenta
This paper studied an architecture model of turbidite channel systems based on the shallow- layer high resolution 3D seismic information in the deepwater area i
A better understanding of the controls on reservoir quality has become essential in the petroleum exploration in recent years.Determining the original compositi
Coals developed in the Oligocene Yacheng and Lingshui formations in the Qiongdongnan Basin have high organic matter abundance,and the dark mudstones in the two
Methane in soil gas and its transfer to the atmosphere in the Yakela condensed gas field in the Tari
In this study,by analyzing CH4 concentration and δ13CCH4 in soil-gas profiles,the potentials of CH4 gas transfer from ground to atmosphere were studied at four
本文报道了1例老年男性患者，咳嗽、气短半年就诊。血MPO-ANCA阳性。胸部CT显示双下肺以及胸膜下为主的网格影、蜂窝肺；外科肺活检病理符合UIP，伴较多淋巴细胞浸润及淋巴滤泡形成，考虑继发性。3年后出现肾功能损害，肾脏穿刺活检提示坏死性小血管炎肾损伤，诊断为显微镜下多血管炎。肺部病变考虑显微镜下多血管炎继发间质性肺炎。
期刊
Optimization of the seismic processing phase-shift plus finite-difference migration operator based o
Although the phase-shift seismic processing method has characteristics of high accuracy,good stability,high efficiency,and high-dip imaging,it is not able to ad
髋关节发育异常(developmental dysplasia of the hip,DDH)是儿童期最常见的骨骼肌肉系统疾病.其特点是在患儿出生时,股骨头与髋臼失去正常的对位关系,多数表现为股骨头部分脱出髋臼,少数股骨头全部脱出髋臼;病变常累及髋臼、股骨头、关节囊和髋关节周围的韧带和肌肉.由于早期临床表现不明显,特别是在新生儿期,容易漏诊而延误治疗.大量研究表明头臼同心是髋关节发育的先决条件.婴
Seismic processing characterizing thickness and borders of thin inter-beds has gradually evolved from post-stack migration to pre-stack migration,and the latter