CaCl_2对KAlSi_3O_8-CaSO_4-CaCO_3反应体系的影响研究     

石林  曾小平  罗汉金 《矿物岩石》2010,30(1)

通过CaCl2添加剂对KAlSi3O8-CaSO4-CaCO3体系研究反应温度和反应时间的影响研究,结果表明:随着CaCl2加入量的增多,体系的反应温度下降,反应时间缩短,当CaCl2的加入量为10%时,反应温度可降至1000℃,反应时间降至25min,此时KAlSi3O8的转化率仍可高达83.24%。研究CaCl2的加入对KAlSi3O8-CaSO4-CaCO3反应体系动力学过程的影响,得出反应体系符合金斯特林格动力学方程:FK(G)=1-2/3G-(1-G)2/3=KKt,反应受扩散过程控制,计算出当CaCl2的加入量为10%时,体系的表观活化能可从原来的128.921kJ/mol下降至58.320kJ/mol。  相似文献   

王保和运用芳香开痹法治疗胸痹经验          下载免费PDF全文

谷旭放  王保和 《应用海洋学学报》2022,38(2):46

介绍王保和教授运用芳香开痹法治疗胸痹的经验。王教授认为胸痹的发生主要责于胸阳不得宣通,心气失于舒展,阴邪趁机上犯,以致气血不畅,心脉不和。王教授临证确立芳香开痹的治疗大法,总结出芳香开痹基础方,并在此基础上予以活血、行气、温阳、养阴等临证化裁,临床效果颇佳。并附验案1则,以助佐证。  相似文献   

Study on extracting alumina from fly ash by compound additive activation method     

WANG Yongwang 《世界地质(英文版)》2014,17(3):182-188

According to the chemical and mineral composition characteristics of the fly ash, alumina can be extracted from fly ash through the calcining method by using sodium carbonate and calcium carbonate additives. The effects on leaching rate of alumina have been investigated. The results showed that the fly ash can be activated effectively and the leaching rate of alumina can be improved to more than 92% through this method. The best process parameters were the ratio of raw materials, i.e. the material weight ratio of fly ash, calcium carbonate and sodium carbonate was 1.0：1.2：0.9. The activating temperature was 850℃-900℃, activating time was 3 h. This process has a potential application prospect and improves the value of comprehensive utilization of fly ash.  相似文献   

方斑东风螺对饲料中铜的需要量     

《广东海洋大学学报》2014,(3)

以硫酸铜为铜源,在基础饲料中分别添加0、1、3、5、8、12和20 mg/kg的铜,配制出铜质量分数为1.2、2.1、3.9、6.2、9.0、13.4、20.5 mg/kg的7种实验饲料,投喂方斑东风螺(Babylonia areolata)8周,研究方斑东风螺对铜的需要量(养殖水体中铜质量浓度为2.91μg/L)。结果表明:饲料铜含量对方斑东风螺生长性能、饲料系数(FCR)和蛋白质效率(PER)影响无统计学意义(P0.05);螺软体部总超氧化物歧化酶(SOD)、铜锌超氧化物歧化酶(Cu-ZnSOD)、过氧化氢酶(CAT)和铜ATP转运酶(Cu-ATPase)活力随着饲料铜水平的增加而增加,分别在饲料铜水平为6.2、3.9、6.2和6.2 mg/kg达到最大值;饲料铜质量分数超过9.0 mg/kg时,螺软体部铜含量随着饲料铜水平的增加而增加,差异有统计学意义(P0.05),各组螺壳中铜含量差异无统计学意义(P0.05)。以总SOD、CAT和Cu-ZnSOD活力为指标,运用折线模型分析,得出方斑东风螺对铜的需要量分别为5.83、5.61和5.87 mg/kg。  相似文献   

松江鲈鱼人工配合饲料投喂实验研究     

宋向军  王忠全  周全利  周辉  杜荣斌  刘立明  杨秀兰 《海洋湖沼通报》2014,(1)

2013年4月29日至2013年11月21日全部采用人工配合饲料对松江鲈鱼仔、幼鱼进行了投喂研究,在水温18.2~22.6℃的室内循环水中,松江鲈鱼通过升索S1~S8苗种料投喂,体重由平均0.084g/尾增至23.55g/尾,体长由平均1.95cm增至12.45cm;最大个体体长14cm,体质量33.5g;最小体长8cm,体质量14.5g。研究表明:仔鱼开口摄食外源性营养时,应以投喂卤虫幼虫为主,逐步减少卤虫幼虫,增加S1人工饲料,直至养到2cm左右,全部采用人工配合饲料喂养松江鲈鱼达到成熟规格完全可行,其平均日增长量0.115g/尾,饲料系数平均为1.1,总特定生长率(SGR)为2.76%d~(-1)。期间定时测定养殖水体的温度、pH、盐度、DO、COD、氨氮、亚硝酸盐、硝酸盐等水质指标均在正常范围内。实验还表明,在盐度范围20.3~27.1的条件下松江鲈鱼可以养至成熟规格。  相似文献   

Layered farming for Marsupenaeus japonicus Bate     

李玉全  姜令绪  王仁杰 《中国海洋湖沼学报》2014,32(3):549-553

Marsupenaeusjaponicus Bate is one of the most valuable cultured shrimp species in China and outdoor earthen pond farming is the most common method of culturing this organism. The need to increase soil usage efficiency in aquaculture has been recognized and a great deal of research effort has been directed toward development of super-intensive farming systems. However, current research and development in this field is largely devoted to Litopenaeus vannamei Boone, while to M.japonicus Bate it has been neglected. In this study, a layered fanning system was designed and a 66-day study was conducted in M.japonicus Bate culture. The system comprised bracket and sand layers that divided a shrimp tank filled to a depth of 1.2 m into four water layers. Conventional tank culture （unlayered） was used as a control. The results show that survival rate, feed conversion efficiency and production of M.japonicus Bate in the layered farming system were 68%, 18%, and 0.59 kg/m^2, respectively, all of which are significantly higher than in the unlayered fanning system （P〈0.01）. These findings confirmed the possibility of using a layered system to culture M. japonicus Bate.  相似文献   

Influence of dietary n-3 LC-PUFA on growth,nutritional composition and immune function in marine fish Sebastiscus marmoratus     

彭士明  岳彦峰  高权新  施兆鸿  尹飞  王建钢 《中国海洋湖沼学报》2014,32(5):1000-1008

A 60-day feeding experiment was conducted to investigate the influence of dietary omega-3 long-chain polyunsaturated fatty acids(n-3 LC-PUFA) on growth, nutritional composition and immune function of marine fish Sebastiscus marmoratus. Five diets containing 3.6, 10.2, 18.2, 26.5, or 37.0 g/kg n-3 LC-PUFA were prepared. The results reveal significant influences of dietary n-3 LC-PUFA on the final weight, weight gain, specific growth rate, feed conversion ratio, and condition factor. As dietary n-3 LCPUFA increased, weight gain and specific growth rate increased and were significantly higher in groups fed 18.2, 26.5 and 37.0 g/kg than in groups fed 3.6 and 10.2 g/kg( P 0.05); there was no significant difference between groups fed 18.2, 26.5, or 37.0 g/kg( P 0.05). With increasing dietary n-3 LC-PUFA, eicosapentaenoic acid and docosahexenoic acid content in muscle and liver increased significantly, immunoglobulin class M content gradually increased from 9.1 to 14.8 μg/L, and lysozyme activity content increased from 1355 to 2268 U/mL. Broken line model analysis according to weight gain indicated that a dietary n-3 LC-PUFA level of 18.2 g/kg is essential for normal growth at a fat level of 125 g/kg. Therefore, appropriate dietary n-3 LC-PUFA not only promote growth and improve the n-3 LC-PUFA content, but also enhance immune function in S. marmoratus.  相似文献   

饲料添加不同脂肪及蛋白质水平对日本沼虾(Macrobrachium nipponensis)生长性能、体成分及消化酶活力的影响     

斯烈钢  邹李昶  申屠基康  朱卫东 《海洋与湖沼》2014,45(2):400-408

本实验以64d为限,设A1(34%),A2(38%),A3(42%)三个蛋白梯度水平和B1(5%),B2(8%),B3(11%)三个脂肪梯度水平,采用正交试验方法研究了饲料中不同脂肪及蛋白质水平对日本沼虾(Macrobrachium nipponensis)[平均体重(0.69±0.23)g]生长性能、体成分和消化酶活力的影响。结果表明,脂肪和蛋白质水平对日本沼虾成活率影响不显著(P0.05),脂肪水平对32d相对增重率和特定生长率影响显著(P0.05)。B3组的特定生长率和相对增重率均显著低于B1和B2组(P0.05)。全虾和肌肉的脂肪含量显著地受饲料脂肪水平的影响(P0.05)。饲料中蛋白质水平对全虾的干物质、蛋白质和灰分含量,以及肌肉中脂肪、蛋白质含量影响显著(P0.05)。饲料脂肪水平对肝胰脏中脂肪酶活力影响显著(P0.05),蛋白水平对肝胰脏中脂肪酶、蛋白酶和淀粉酶活力影响不显著(P0.05)。本文认为日本沼虾饲料脂肪水平应以5%—8%较为合适,蛋白质水平应在38%左右较为合适。  相似文献   

不同蛋白源饲料对褐点石斑鱼幼鱼血细胞发生的影响     

王赛  陈刚  张健东  纪多亮  吴灶和  周晖 《广东海洋大学学报》2011,(6):9-19

以全鱼粉作为唯一蛋白源(D1),用豆粕替代10%、20%鱼粉(D2、D3),玉米蛋白粉替代10%鱼粉(D4),啤酒酵母替代10%鱼粉(D5),配制5组等氮等能饲料,每种饲料设置3个实验组,进行56 d的养殖实验。通过血液和组织涂(印)片、细胞染色和显微观察,研究人工培育的褐点石斑鱼幼鱼外周血液白细胞的分类组成,头肾、脾脏、体肾和肝脏等4种组织中各类血细胞的发生情况,以及不同蛋白源饲料对褐点石斑鱼血细胞发生的影响。结果表明:褐点石斑鱼外周血液中的白细胞由淋巴细胞(53.30%±4.66%)、血栓细胞(35.69%±3.85%)、嗜中性粒细胞(10.34%±3.14%)、单核细胞(0.28%±0.36%)、浆细胞(0.24%±0.34%)和嗜酸性粒细胞(0.15%±0.27%)组成;组织印迹片中,未成熟的红细胞、淋巴细胞和粒细胞主要在头肾印迹片中出现,未成熟的单核细胞主要在头肾和脾脏印迹片中出现,血栓细胞在肝脏印迹片中数量最多,推断褐点石斑鱼幼鱼主要的造血组织是头肾,其次是脾脏;在4种组织中均观察到浆细胞,在体肾印迹片中观察到嗜碱性粒细胞,在肝脏印迹片中观察到巨噬细胞,在头肾印迹片中还观察到巨大原红细胞。显微观察和数据统计分析的结果都表明,投喂5种蛋白源不同的配合饲料,未对褐点石斑鱼4种组织中血细胞的发生情况造成显著影响。  相似文献   

海洋药用天然产物研究的进展     

方金瑞  黄维真 《海洋通报》1991,10(5):99-102

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