加氯水体有机浓集物对团头鲂血液指标的影响   总被引：1，自引：0，他引：1  

吴伟  余晓丽 《广东海洋大学学报》1999,19(4):26-29

本文对团头鲂２项血液学指标（红细胞数ＲＢＣ和血红蛋白量Ｈｂ）的正常值进行了研究,同时检测了加氯水体中有机浓集物对这２项指标的影响。结果表明,团头鲂血液中ＲＢＣ和Ｈｂ的正常值受生长和水温等因素影响;在相同的试验条件下,加氯水体中的有机浓集物对团头鲂血液ＲＢＣ和Ｈｂ有抑制作用,抑制率分别为４．３％～２６．０％和５．０％～２２．５％,表明此类物质对鱼类正常的生长代谢有一定的危害。  相似文献   

总结防治经验 减轻虾病危害     

蒋国光 《海洋信息》1996,(3):10-12

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光臭氧技术在水产养殖中应用的初步探讨     

夏达英  肖继元 《海岸工程》1996,15(3):43-48

光激发的臭氧是使用波长低于１８０ｎｍ的光量子激发氧分子（Ｏ２）而产生的，与常规的地臭氧的区别是：光臭氧为呈碱性负离子状态的气流，它的氧化电势为２．６０Ｖ，不呈现氮氧化物，在水中的半衰期超过２ｈ，是极强的氧化剂，其杀菌消毒效果远高于常用消毒剂。它可以一次同时完成杀菌消毒、净化水质和增氧三大任务，而且不产生二次污染，是当前水产养殖中水质消毒净化的理想物质具有极其广泛的推广应用前景。  相似文献   

奈良与京都——日本海丝之路的前生今世     

沈婷婷 《海洋世界》2015,(2):10-15

海上丝绸之路,早在我国秦代已经出现。传说在公元前219~210年,秦始皇为求长生不老丹,曾派徐福率领童男、童女、船员、百工,数千人东渡日本,传播养蚕技术,日本人民后尊祀徐福为"蚕神"。也有记载说,公元前3世纪,江浙一带的吴地有兄弟二人,东渡黄海至日本,传授蚕织和缝制吴服的技艺。其后,内地人士或经由朝鲜,或从山东出发,三三两两地到日本定居,交往十分密切,并促进了日本蚕业的发展。  相似文献   

基于丹磺酰基团的高选择性的铜离子荧光离子探针     

王玉芬  高明姬 《吉林地质》2010,29(3):87-89

设计合成了含有丹磺酰基团的铜离子荧光探针a,该探针在水溶液中(含有1%的DMSO)对铜离子识别和检测具有较高的灵敏度和选择性。该识别是以丹磺酰基团的荧光发射的蓝移和微弱猝灭为响应信号,并且对其它碱金属和碱土金属离子(如K+、Na+、Mg2+、Ca2+等)以及过渡金属离子Cr3+、Mn2+、Fe3+、Co2+、Ni2+、Zn2+、Cd2+、和Ag+等都没有识别响应。  相似文献   

抑芽丹对烤烟芽、花的抑制作用试验初报   总被引：1，自引：0，他引：1  

王正富  颜可贵等 《贵州气象》1995,19(6):28-30

烤烟是叶用经济作物，栽培中需要控制生殖生长，促进营养生长，达到增加叶面积的目的，抑芽 能控制分生组织，促进叶片生长，经我局1995年引进试验，抑制株率可达100％，腋芽长度抑制效果为57.4％，叶面积增加1.7％，药品投入与投劳费用之比为1：1.37。  相似文献   

Influence factors of phosphorus variation regularity in sediment-water system   总被引：1，自引：0，他引：1  

Shaoyong LU Xiangcan JIN Jianning GUO 《中国地球化学学报》2006,25(B08):257-257

Knowledge of phosphorus （P） variation regularity of sediment-water system has important influence on water pollution. Thus P variation regularity of top-sediment affected by some factors such as type of sediment （sandy and silty）, background value of sediment, P concentration of overlaying water, inhibiter, disinfection, was investigated. The results stated that, （1） P in the sandy sediment occurred mainly in the form of insoluble P. Silty sediment with a low background level has higher dissoluble total phosphorus （DTP） content than silty sediment with a high background level. （2） Low-P primary liquid has low TP and DTP contents, TP in the overlying water was rich in DTP. While TP in overlying water of high P primary liquid was rich in insoluble total phosphorus （ITP）. Overlying water of adding inhibitor set has high TP, dominated by ITP. TP in overlying water of no inhibitor set was dominated by DTP. Adding inhibitor set has obviously high pH value and tallish DO concentration in overlying water than in no inhibitor set. Disinfection set has high Pcontent in overlying water, DTP content is high. DO and ORP in overlying water of non-disinfection set were obviously higher than in that disinfection set.  相似文献   

彭文运用甘露消毒丹治疗耳鼻喉科疾病验案3则          下载免费PDF全文

周祖炎  彭文 《应用海洋学学报》2024,40(3):96

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预防在夏季——现在要更警惕还是能放松些     

陈永杰  邹波 《发现．图形科普》2003,(5):11-11

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Impact of Suspended Particles and Enhancement Techniques on Ultraviolet Disinfection of a Secondary Effluent   总被引：1，自引：0，他引：1  

WANG Jianling WANG Lin WANG Baozhen ZHANG Jinsong ZOU Oixian 《中国海洋大学学报(英文版)》2006,5(4):381-386

The concentration of suspended solids in the secondary effluent often varies widely, leading to frequent adjustment of the UV dosage to meet the disinfection criterion. In addition, a desired disinfection rate is difficult to achieve sometimes. The authors studied the particle size distribution, contribution of particle-associated Fecal Coliform （F. C. ）, and their influences on UV disinfection. A combined disinfection process （chlorination with a subsequent UV disinfection） was tested to improve the disinfection effect. The results indicated that the content of suspended solids, especially that of large particles, has a strong impact on UV disinfection efficiency; D〉 10 μm particles associated F.C. are difficult to be disinfected and are the main part of the tailings of F.C. inactivation curves. Pre-chlorination could decrease the number of particles in the secondary effluent and transform the large particles into small ones, reducing the influence of particles on UV disinfection and enhancing the resistance ability of the combined process to particle loading.  相似文献