浙江省贝类养殖业可持续发展策略初探

指出了浙江省贝类养殖业存在的一些问题,并从改善养殖环境、防治贝类病害,提高贝类种质等几方面提出了相应的对策,为浙江省贝类养殖业的可持续发展提供了科学依据。     

缙云山常绿阔叶林次生演替序列群落物种多样性动态研究

采用物种丰富度Ｓ和物种多样性香农指数Ｈ、物种均匀度指数Ｊ以多样性－面积曲线研究缙云山常绿阔叶林次生演替序列物种多样性近十年的变化,结果表明,１０年后,群落各层物种多样性指数均有下降趋势,草本层下降最为明显;群落及乔、灌木层的多样性指数（Ｓ,Ｈ,Ｊ）在演替中后期阶段均呈下降趋势,而演替前期的马尾松和林龄较短的混交林Ⅰ却有上升趋势;群落各层多样性最小面积按马尾松林、混交林到常绿阔叶林顺序增长,两个混交     

鼻内窥镜,柯—陆手术联合进路治疗慢性鼻窦？…

探讨鼻内窥镜,柯－陆手术联合进路治疗伴有上颌窦病变的慢性鼻窦炎,鼻息肉的疗效。方法：对１０４例伴有上颌窦病变的慢性鼻窦炎患者行鼻内窥镜、柯－陆手术联合进路鼻窦手术,彻底清除病变。结果：术后随访６－１２个月,治愈８５例,好转１５例,无效４例,总有效率为９６．１％。     

"Protein-only" or "virino" in prion diseases?

60-year prion and scrapie research has led to a dilemma in understanding the unknown aetiology of the infectious neurodegenerative disorders with intriguing features. Current progress and dilemma in prion research are briefly but critically reviewed. Instead of providing a comprehensive coverage of the research history, attentions in this view are drawn toward both the major breakthrough in the advancement of protein-only hypothesis, and the puzzle why this hypothesis has not been fully accepted. In order to resolve the prion enigma in neuroscience, it is suggested that both technical and concept barriers remain to be crossed. Since prion research is a multi-interdisciplinary subject, this view is intended to both facilitate a better understanding of prion phenomenon by more scientists in natural science, and invite scientists outside the fields of molecular genetics and protein science for collaboration.     

"Protein-only" or "virino" in prion diseases?

60-year prion and scrapie research has led to a dilemma in understanding the unknown aetiology of the infectious neurodegenerative disorders with intriguing features. Current progress and dilemma in prion research are briefly but critically reviewed. Instead of providing a comprehensive coverage of the research history, attentions in this view are drawn toward both the major breakthrough in the advancement of protein-only hypothesis, and the puzzle why this hypothesis has not been fully accepted. In order to resolve the prion enigma in neuroscience, it is suggested that both technical and concept barriers remain to be crossed. Since prion research is a multi-interdisciplinary subject, this view is intended to both facilitate a better understanding of prion phenomenon by more scientists in natural science, and invite scientists outside the fields of molecular genetics and protein science for collaboration.     

新世纪的城市林业方向——生态风景林

城市林业是为城市服务的林业体系．如何改善城市环境发展城市林业,已成为现代城市建设管理的重要课题．从城市林业的兴起,城市林业的骨干林种和新方向,生态风景林的设计原理以及关于生态风景林的效益评估等几个方面讨论了新世纪的城市林业方向问题．     

缙云山常绿阔叶林风灾迹地物种多样性特征研究

次生裸地的恢复保护是目前世界范围内对生态环境的保护和改善的一个重要组成部分。作者用ＳｈａｎｎｉｏｎＷｉｅｎｅｒ指数（Ｈ‘）,Ｓｉｍｐｓｏｎ多样性指数（Ｄ）,均匀度指数（Ｊ）研究了缙云山风灾迹地恢复群落的物种多样性特征,为探索风灾迹地的恢复,保护提供基础数据。     

酸性胃食管反流性疾病豚鼠模型的建立

目的建立酸性胃食管反流性疾病(GERD)的豚鼠模型,用于研究胃食管反流性疾病并发的呼吸系统疾病。方法豚鼠持续灌酸或蒸馏水16天后,测其食管下段粘膜的pH值,计数支气管肺泡灌洗液(BALF)中的细胞总数及嗜酸性粒细胞计数,并研取食管、气管和肺组织标本进行病理学观察。结果模型组豚鼠食管下段粘膜的pH值明显降低,BALF的细胞总数和嗜酸性粒细胞(EOS)显著升高(P<0.01),病理变化主要表现为食管、气管和肺组织上皮增生,炎性细胞和嗜酸性粒细胞的浸润。结论胃内容物反流能造成豚鼠食管、气管粘膜和肺组织的损伤,可研究GERD并发的呼吸系统疾病和该病的病理生理情况,该制模方法成活率高、简单易操作。     

CT靶扫描在肾上腺疾病诊断中的价值

目的：评价CT薄层靶扫描在肾上腺疾病定位与定性诊断中的作用。方法：回顾性分析了55例病人56处经手术病理证实的肾上腺病变的CT影像资料,重点分析其形态、大小、密度及边缘情况。CT检查均为平扫与增强及薄层靶扫描。结果：肾上腺增生22例,CT表现主要为体积增大,其中髓质增生14例,肾上腺皮质增生8例,两者在形态及大小的CT表现无差别;肾上腺皮质增生中结节性增生4例,增强扫描后均为轻度强化;肾上腺皮质腺瘤14例,增强扫描后,轻度强化5例,中等强化7例,明显强化2例。34例肾上腺肿瘤性疾病的CT影像诊断符合率为77．14％。在定性诊断中,CT诊断与病理结果相一致有39例,误诊17例。结论：CT靶扫描在肾上腺疾病的定位及定性诊断中具有很高的价值。CT对大多数的肾上腺肿瘤性疾病诊断较为敏感;对于肾上腺髓质增生与皮质增生的鉴别,则没有明显的特异性;肾上腺皮质腺瘤可与皮质结节性增生鉴别。