对成人高等师范院校摄影教育现状的思考

摄影术产生150多年来，摄影以其独有的“决定性瞬间”的特点，迅速为人们所关注，从而得以迅速发展，伴随着摄影术的传入，中国有了摄影教育，但同开展得如火如荼的普通高校摄影教育相比，摄影在成人高等师范院校的发展目前尚处于初级阶段，本就这一现象进行了分析和阐述，希望借此唤起人们的重视，从而带动其健康稳定的发展。     

Selection of a Thermophilic Alkalitolerant Actinomycete and Conditions for CMCase Production

Five thermophilic strains that can degrade cellulose were isolated from the compost of a waste management in Guangzhou, China. Since one of them degraded cellulose effectively, it was chosen as the study strain. Based on its morphology, spores‘ susceptibility to heat, cell wall composition and other characteristics, the organism was classified as Thermomonospora fusca. Conditions for production of carboxy methyl cellulase (CMCase) were examined. The optimal temperature and pH value for enzyme production were 50℃ and 10.5, respectively. Cellulosic materials and easily metabolisable carbohydrates served as carbon sources for the growth of the strain. Only cotton, avicel,carboxy methyl cellulose (CMC) acted as potent inducers for the production of cellulases by this strain. Despite excellent growth on easily metabolisable carbohydrates, only constitutive levels of cellulases were produced. The optimal carbon and nitrogen sources for CMCase production were cotton and soybean respectively. The high thermostability, wide pH stability, and cheap nitrogen source show well potential use for composting treatment and commercial detergents.     

跨越12年与1086公里的爱

1956年的夏天,他在医院的走廊里第一次遇见了她,一身纯白衬着干净灵丽的乌黑短发,凝眸一笑直击心弦,从此再也无法忘却。外祖父与外祖母同属于中国人民解放军第八五医院在编军人,任职非临床科,外祖父从事放射影像专业,外祖母在药房工作,偶然的相遇让他们成为了一生的伴侣。军人的家庭生活延续部队的习惯,规范、严谨。一子一女生活在部队大院,倒也十分乖巧。生活虽不算富裕,但一家人过得还算宁静幸福。     

Segmental radiofrequency ablation of pulmonary vein ostia for patients with refractory paroxysmal atrial fibrillation using multi-slice spiral computed tomography guidance

INTRODUCTION Pulmonary veins(PV)may play an importantrole in both the initiation and maintenance of parox-ysmal atrial fibrillation(AF)(Fynn and Kalman,2004).Curative treatment of patients with paroxys-mal AF is possible by radiofrequency ablation,mak-ing segmental or linear lesions around the ostia ofPVs using a3-dimentional mapping system(Carto)(Pappone et al.,2000;2001;Oral et al.,2003).Multi-slice spiral computed tomography(MSCT)could generate a3-dimentional image of left atrium…     

Measurement of oil volume fraction and velocity distributions in vertical oil-in-water flows using ERT and a local probe

INTRODUCTION The need for metering multiphase flow in the petroleum industry has been evident for many years. Considerable research has been conducted into this field for developing a suitable flowmeter which can be used in industrial environments. Various tech- nologies have been employed, and among which the tomographic techniques are increasingly being used. Process tomography is an emerging measure- ment technology with applications in a broad range of industries. It is non-invasive a…     

原子物理部分试题类析

原子物理部分在高考试题中属于必考知识点,一般以选择题形式出现,主要是用来平衡试题难度和覆盖考纲的知识点．考查内容涉及α粒子散射实验、核式结构、能级、天然放射现象、原子核的人工转变、核能、爱因斯坦的质能方程、裂变、聚变等,题目以学科内综合、跨学科综合、或信息型综合的形式出现,但难度不大．复习这部分内容必须吃透课本．     

寰枢椎椎弓根影像学定位的临床应用研究

目的:利用影像学资料测量寰枢椎椎弓根的各种数据,为临床应用提供客观依据,提高寰枢椎椎弓根内固定手术置钉的1次成功率。方法:2001.10~2007.9月,对200份寰枢椎CR、DRX线片、MRI及64排CT片,通过图像储存传输系统(简称Pacs)分析,测量寰枢椎椎弓根安全进钉点及安全进钉角度。利用自制的寰枢椎定位导向器,依据所测的安全进钉点及安全进钉角度对48例患者应用192枚寰枢椎椎弓根行经椎弓根内固定手术。结果:通过对这200份影像学资料分析测量后认为寰椎椎弓根安全进钉点:左侧(19.93±1.32)mm,右侧(19.16±1.30)mm;寰椎椎弓根向内侧安全进钉角度:左侧(23.72±2.09)°,右侧(23.35±1.91)°;寰椎向头侧安全进钉角度(9.00±1.20)°。枢椎椎弓根安全进钉点:左侧(13.14±0.82)mm,右侧(13.85±0.79)mm;枢椎椎弓根向内侧安全进钉角度:左(24.52±1.26)°,右侧(20.42±1.42)°;枢椎向头侧安全进钉角度(25.00±3.00)°。48例病人平均随访10.6个月,按JOA评分标准,优31例,良14例,可2例,差1例,优良率93.75%。结论:利用对CR、DRX线片、MRI及64排CT片等影像学资料,测量寰枢椎椎弓根各种数据,设计简便、程序简化、个性化强,对寰枢椎椎弓根内固定手术的实际操作有良好的指导意义。     

乳腺内钙化在良恶性病变中X线诊断价值

目的:探讨乳腺内钙化在乳腺良恶性病变中线的X诊断价值。方法:经病理证实的,乳腺X线摄影确认的62例钙化病例,回顾性分析其钙化的形态、大小、密度、边缘、分布等特点。结果:62例乳腺钙化病例中,良性病变为43例,恶性病变19例。结论:乳腺内钙化的形态有助于乳腺良恶性病变的鉴别诊断。     

主位推进模式与TEFL写作教学

本文论述了主位推进的四种主要模式，从认知心理学的角度出发，对已有相当高的认知水平而英语表达能力相对低下的学生导入模式，是提高学生语篇写作能力的一种行之有效的方法。