Studies on long-distance transports of Paralichthys olivaceus fries

本实验对 1 0个批次 ,总数为 1 90 47尾的不同规格和产地的牙鲆鱼苗长途运输效果进行了研究 .结果表明 ,规格为 9～ 1 2cm的鱼苗 ,在水温 6～ 1 2℃ ,运输时间为35～ 50h ,采用空运和低温活水车运输 ,运输死亡数为 6 6 4尾 ,死亡率为 3.39% ,低温活水车短途运输是可行的 ,尽管长途车运方式成本较低 ,但由于应激强度较大 ,对鱼苗的生产性能影响较为严重 ,驯养 1 0d累计死亡率最高达 1 8.1 7% ,这种模式不可取 .低温 ( 6℃ )、小规格 ( 9cm)的空运较适合牙鲆鱼苗长途运输 .此外 ,本文还就运输应激反应、预防措施和药物防治进行详细的讨论 .This experiment was conducted to study the long-distance transports of Paralichthys olivaceus fries with different sizes and producing place for ten batches and 19 047 fishes. The results showed that about 664 fries with body length of 9～12cm died during transport with 3.39% mortality rate under the temperature 6～12℃, 35～50h transport time by airplane and vehicle with flowing water. From these results, it concluded that short distance transport ation by vehicle with flowing water in low temperature was feasible. It is not suit for long-distance transport of P.olivaceas fries with vehicle, though it's cost maybe lower ,an influence of strong transportation stress on its productive performance was very obvious, with the highest cumulative mortality of P.olivaceus fries cultivated for 10 days arrived at 18.7%. And it's suit for long-distance transport of P.olivaceus fries under the condition of low temperature (6℃) and small sizes (9cm) by airplane. In addition, this paper also discussed on transportation stress,defend measure and medicament cure in detail

Studies on mix- cultivation of Paralichthys olivaceus and Cynoglosus sp. in southern Fujian

本试验采用来自山东乳山人工培育,平均体长为19.8cm的牙鲆鱼苗4566尾和漳埔海区野生,体长10￣13cm的舌鳎鱼苗1280尾,在水温10￣28,盐度27￣30,pH值7.8￣8.5的条件下,进行为期180d的池塘混养和人工驯养。结果表明,总成活率为69.2%,总产量1209kg,牙鲆冬季南移养殖及与舌鳎混养是可行的,且舌鳎海区野生苗人工驯养初获成功。此外,本文还就影响牙鲆和舌鳎养殖效果和经济效益的因素进行了讨论。This experiment was conducted to study the mix- cultivation of Paralichthys olivaceus,Cynoglosus sp. and the domestication of Cynoglosus sp. in southern Fujian.4 566 fries of P.olivaceus with the body length of 19.8 cm were got from hatchery farm in Rushan,Shandong,and 1 280 fries of Cynoglosus sp.with the body length of 10￣13 cm captured from the natural waters of Zhangpu,Fujian.This 180 days experiment was conducted under water temperature 10 ￣28 ,salinity 28 2,pH 7.8￣8.5 to determine effects of mix- cultured. The results showed that the total survival rate of the mis- cultivation was 69.2%,the production of them,1 209 kg.the cultivation of P.olivaceus and the mix- cultivation of it & Cynoglosus sp. in winter in southern Fujian were feasible,and that the domestication of Cynoglosus fries captured from the natural waters of Zhangpu was first a successful experiment.The paper discussed the affected factors of the economic benefit of P.olivaceus and Cynoglosus sp. in detail

Nutritional component analysis and quality evaluation of Sinonovacula rivularis from Changle sea area of Fujian

测试分析了福建长乐海域近江蛏(SInOnOVACulA rIVulArIS)新鲜软体部的营养成分,并与部分经济蛏类进行比较.结果表明,近江蛏软体部的出肉率为48.1%±6.0%,软体部中的水分、蛋白质、脂肪和灰分质量分数分别为84.9%、9.4%、1.6%、1.4%.近江蛏软体部中含有人体所需的17种氨基酸(除色氨酸未测外),氨基酸含量为74.0 Mg/g,必需氨基酸(C EAA)占氨基酸总量(C TAA)的37.2%,鲜味氨基酸(C fAA)占氨基酸总量(C TAA)的49.6%,17种氨基酸中谷氨酸(glu)含量最高.根据AAS和CS评价,第一限制性氨基酸为苯丙氨酸(PHE).赖氨酸(lyS)的AAS评分最高,超过fAO/WHO模式和鸡蛋蛋白质.软体部的必需氨基酸指数(I EAA)为100.06,必需氨基酸(EAA)与非必需氨基酸(nEAA)的比值(C EAA/C nEAA)为59.1%,必需氨基酸(EAA)与氨基酸总量(C TAA)的比值(C EAA/C TAA)为37.2%,构成比例均接近fAO/WHO提出的优质蛋白质标准.近江蛏软体部和足部的多不饱和脂肪酸(PufA)含量高于饱和脂肪酸(SfA)的含量,多不饱和脂肪酸(PufA)中又以高度不饱和脂肪酸(HufA)的组成为主,并且n-3PufA的含量明显高于n-6 PufA的含量;dHA和EPA含量丰富,软体部的EPA与dHA质量分数分别为4.4%、3.0%,EPA含量高于dHA的含量,两者之和分别占多不饱和脂肪酸(PufA)的80.4%、81.1%.近江蛏足部的PufA含量、C n-3/C n-6比值以及C EPA+C dHA之和均高于软体部.近江蛏软体部中含有丰富的矿物质元素,尤其是zn、SE含量十分丰富.表明近江蛏肌肉具有较高的营养价值.建议对近江蛏等底栖性贝类在食用前进行蓄养净化,并对其进行消费安全和人体健康风险评价.The nutritional composition in the muscle of Sinonovacula rivularis was analyzed and compared with that of some high quality razor clams.The results showed that the contents of flesh,water,crude protein,fat and crude ash in the clam were 48.1% ± 6.0%,84.9%,9.4%,1.6%,and 1.4%,respectively.Seventeen amino acids which the human body needs( except tryptophan which had not been tested) are found in its edible part.The content of amino acids in the fresh edible part is 74.0 mg / g,C EAA is 37.2% of the total content of amino acids while C FAA is 49.6% of the total.The content of glutamic acid is the highest among seventeen amino acids.According to the evaluation of AAS and CS,the first limited amino acid is phenylalanine.The AAS of lysine is highest rated, which is better than the module of the FAO / WHO and the standard of egg protein.The index of essential amino acids( I EAA) is 100.06 in the soft part.The ratio between the EAA and non-essential amino acids( NEAA) is 59.1%.The ratio between C EAA and the total content of C TAA is 37.2%.The percentages of the structure are close to the standard of the top-quality protein proposed by FAO / WHO.The PUFA content of the unsaturated fatty acid( UFA) of edible part and the foot part of the clam is higher than that of SFA.The structure of PUFA is main part of the HUFA( highly unsaturated fatty acids) and the content of n-3PUFA is obviously higher than that of n-6PUFA.The contents of DHA and EPA are rich.The mass fraction of EPA and DHA in the edible part is 4.4% and 3.0% respectively.The content of EPA is higher than that of DHA.The total contents of two account for 80.4% and 81.1%,respectively,of the PFA.The PUFA content of the clam foot,the ratio between n-3 and n-6,and the sum of EPA and DHA are all higher than those of edible part.The edible part of the clam is full of mineral elements,especially for the high contents of Zn and Se,which indicate that the meat is of highly nutritional.However, when taken filter-feeding bivalves as food,such as the clams,S.rivularis,sanitation and consumer health risk valuation are suggested.福建省发展和改革委员会农业“五新”推广资助项目(闽发改农业2010-452

Distribution of total organic carbon contents and influencing factors in Taiwan Strait and adjacent waters in summer

依据2006年7~8月对台湾海峡及邻近海域环境调查资料,分析了总有机碳(TOC)含量的空间分布特征,并讨论影响其分布的主要因素.结果表明,2006年夏季台湾海峡及邻近海域的TOC含量范围为0.54~3.68 Mg/dM3,平均值为1.20 Mg/dM3.TOC含量平面分布呈现由近岸向离岸逐渐降低、由北向南先降后升的趋势.在垂直方向上,随深度的增加TOC含量均值由1.35 Mg/dM3降至1.07 Mg/dM3,至底层时略有升高,为1.10 Mg/dM3.TOC含量高值区主要出现在盐度32以内的区域,这表明径流输入是导致近岸TOC含量较高的主要因素,一方面通过直接输入,另一方面通过浮游植物繁殖间接增加,从而形成近岸TOC含量高值区.叶绿素A含量与TOC含量呈较弱的正相关,表明浮游植物活动对TOC的增加有一定贡献,海流运动以及浮游动物对叶绿素A的摄取可能是导致叶绿素A与TOC含量呈较弱正相关的主要因素.而在东山-南澳附近局部海域,上升流是影响TOC含量分布的主要因素.Based on the survey in Taiwan Strait and adjacent waters in July and August 2006,the spatial distribution of total organic carbon(TOC) is analyzed and factors influencing the distribution pattern are also discussed.The results showed that in Taiwan Strait and adjacent waters in summer of 2006,the TOC content was 0.54--3.68 mg/dm3 and its average concentration was 1.20 mg/dm3.The content of TOC decreased from nearshore to offshore while it first decreased from north to south and then increased.It also decreased with depth from 1.35 mg/dm3 to 1.07 mg/dm3 but slightly raised to 1.10 mg/dm3 at the bottom water layer.In the nearshore zone of salinity higher than 32,TOC concentration was high due to directly runoff input and indirectly the growth of phytoplankton.The chlorophyll a concentration was low correlated positively with that of TOC because of current movement,phytoplankton growth and zooplankton uptake.However,upwelling was the main controlling factor in sea waters along the coast of Dongshan and Nan'ao.国家海洋局第三海洋研究所基本科研业务费专项资金资助项目(海三科2009025;海三科2009007);福建908专项资助项目(FJ908-04-07;FJ-01-01-HS);国家908专项资助项目(908-ZC-I-03

Simultaneous Determination of Bisphenol A,Octylpheonl and Nonylphenol by High Performance Liquid Chromatography in Environmental Water

建立了高效液相色谱-荧光检测法同时测定环境水体中双酚A(bPA)、辛基酚(dP)和壬基酚(nP)的方法。比较了液液萃取(llE)和固相萃取(SPE)两种前处理方法,并设计了供复杂样品使用的净化柱。水样经萃取后,用轻柔氮气吹干,甲醇溶解,采用PHEnOMEnEX lunA C18色谱柱,以乙腈-水为流动相进行梯度洗脱,在激发波长275nM、发射波长300nM下进行荧光检测。结果表明,bPA、nP、OP的仪器检出限(S/n=3)分别为1μg/l、2μg/l和1μg/l。SPE法操作简单快捷,虽然nP、OP的回收率低于llE法,但仍能满足对环境样品的测定要求。净化柱净化效果较好,能够进一步去除基质干扰,满足特别复杂水样的前处理。方法基于不同样品处理的浓缩倍数不同,三种物质的检出限在0.001~0.004μg/l之间。环境水样中bPA、nP和OP的加标回收率分别为86.2%~104%、61.6%~109%和81.5%~100%,相对标准偏差(rSd)分别为2.9%~6.4%、2.4%~5.6%和2.7%~6.9%。Methods for the simultaneous determination of bisphenol A(BPA),octylphenol(OP) and nonylphenol(NP) in environmental water have been developed by high performance liquid chromatography(HPLC) with a fluorescence detector.Effect of two pretreatment methods including liquid-liquid extraction technique with dichloromethane and solid phase extraction technique with C18 were compared and a specially designed glass cleanup column would be used for samples with complex matrix.The extracts of the water samples were evaporated with a stream of nitrogen and the residues were dissolved in methanol.For the HPLC determination,a Phenomenex Luna C18 column(150×2.0 mm i.d.,5 μm) was employed and the mixture of acetonitrile-water was used as the mobile phase with a flow rate of 0.4 mL/min under fluorescence detection with excitation and emission wavelengths of 275 nm and 300 nm,respectively.The results showed that the instrument detection limits(S/N=3) of BPA,NP and OP were 1 μg/L,2 μg/L,1 μg/L,respectively.Although the recoveries of the targets obtained by SPE were lower than those by LLE,the former had the advantages of simple and fast operation and still met the requirements of the determination.The clean column showed a better purification effect on further removing the interference of impurities to meet sample processing.Due to the different enrichment factors of two sample pretreatment methods,the method detection limits of three targets were in the range of 0.001-0.004 μg/L.Recoveries of sea water samples were 86.2%-104% for BPA,61.6%-109% for NP,and 81.5%-100% for OP,with the RSDs of 2.9%-6.4%,2.4%-5.6% and 2.7%-6.9%,respectively.海洋公益性行业科研专项经费(No.201105022); 国际极地年中国行动计划项目支持; 国家海洋局第三海洋研究所基本科研业务资助项目(海三科2009025

Determination of the number of ψ(3686) events taken at BESIII

The number of ψ(3686) events collected by the BESIII detector during the 2021 run period is determined to be (2259.3±11.1)×106 by counting inclusive ψ(3686) hadronic events. The uncertainty is systematic and the statistical uncertainty is negligible. Meanwhile, the numbers of ψ(3686) events collected during the 2009 and 2012 run periods are updated to be (107.7±0.6)×106 and (345.4±2.6)×106, respectively. Both numbers are consistent with the previous measurements within one standard deviation. The total number of ψ(3686) events in the three data samples is (2712.4±14.3)×10^