对虾病毒病与化学需氧量相关关系研究

通过对虾池内主要环境因子与对虾病毒病相关关系的研究,发现虾池内化学需氧量（COD）太高是诱发对虾病毒病暴发流行的主要环境因子之一。利用多级S型净化池可以大幅度消除水体中的COD,有效预防对虾病毒病的暴发流行。     

虾池长竹蛏肥满度的研究

本文作者于1997年4月至1998年3月期间，对幸福洋垦区虾池生长的长竹蛏进行了周年肥满度测定研究.结果表明长竹蛏5～9月份较肥，肥满度在60％～80％之间，11月至翌年4月份较瘦，肥满度在55％～47％之间；根据肥满度的测定，长竹蛏的繁殖期为6～8月份.     

移植大叶藻提高池养对虾产量的研究

本实验首次用移植的方法在虾池内栽培大叶藻。结果表明,大叶藻可以净化虾池水质,改善虾池底质条件,丰富了饵料生物,促进了对虾的生长,提高了产量,每亩虾池的产量提高26.6％,纯利润提高190.5％。文章讨论了提高产量的原因。     

The Lago di Varano: Hydrologic Characteristics and Sediment Composition

Abstract. The Lago di Varano is situated on the north side of the Gargano National Park (southeast Italy) and covers a surface area of about 65 km². It communicates with the Adriatic Sea through two artificial canals (Foce Capoiale and Foce Varano) located at the two ends of a long and narrow coastal dune. This work presents preliminary results of four seasonal surveys (1999–2000) carried out to measure chemical and physical parameters of the water column (temperature, salinity, dissolved oxygen and pH) and to analyse a number of biogeochemical characteristics of surface sediments (organic matter, total phosphorus, total nitrogen and total Hg, As, Pb, Cd, Cr, Cu and Ni content). Water analysis indicated poor exchange between the coastal pond and the open sea, limited to autumn and winter. Surface sediments were rich in organic matter, whose distribution was influenced by chemical-physical and hydrodynamic variations in the water column. At the sediment level, the highest values of Cd were found in the central zone of the basin, while the highest Cr values were measured in the central and southeastern areas. With the exception of Cd and Pb, the metal content did not indicate anthropogenic pollution, in particular when compared with the Venice Lagoon and the Central Adriatic Sea.     

虾池纳潮期日本刺沙蚕幼虫数量及其沉降的研究

于1992年2月27日－5月30日在文登市高岛盐场养虾场，对日本刺沙蚕（卵、各期胚胎和幼虫）的纳潮数量和幼虫的沉降进行现场调查和实验研究。结果表明，对养虾生产有意义的纳潮期有3个。3月上旬的新月潮，持续12d，数量为（25－50）×103个／m3，主要组成是受精卵、各期胚胎和担轮幼虫。3月甲旬的满月潮持续7d，数量为（2－5）×103个／m3。4月上旬的新月潮持续8d，数量为（2－3．5）×103个／m3。纳潮量与潮汐关系密切，但与平均潮高无显著的相关。各潮期的纳潮数量比应是4：4：2。对16个纳潮虾池测试的平均沉降量为4492个／m2。据现场调查和实验研究，日本刺沙蚕幼虫的沉降期可划为暂时沉降（5－6刚节）和变态沉降（7—10刚节）。出现暂时沉降（4月15日以后），便可执行纳潮后的排水等虾池早期管理。纳潮的定量监测方法简单、快速和准确，可用来指导虾池的纳潮。     

高位池养殖凡纳滨对虾生长的研究

用高位池养殖凡纳滨对虾(Litopenaeus vannamei)进行生长研究。凡纳滨对虾养殖密度为135~165万尾/hm2,养殖海水盐度10.0~16.0,温度28.1~34.2℃,pH值7.6~8.8,DO5.0~6.0 mg/L。结果表明:凡纳滨对虾体长(L)与体重(W)的对应关系为:W=0.01 955L2.784;体长生长方程:Lt=13.82(1-е-0.012 01(t-0.699 4));体重生长方程:Wt=29.250 7×(1-е-0.012 01×(t-0.699 4))3;体长生长速率方程:dl/dt=13.823 1×0.012 01×е-0.01 20 1×(t-0.699 4);体重生长速率方程:dw/dt=3×29.250 7×0.012 01×е-0.012 01×(t-0.699 4)×(1-е-0.01201(t-0.699 4)2);高位池养殖凡纳滨对虾拐点年龄为91.36 d,拐点年龄前体长增长较快,拐点年龄后体长增长相对较慢,而拐点年龄前体重增长较慢,拐点年龄后体重增长较快。     

Modelling detention basins measured from high‐resolution light detection and ranging data

The construction of stormwater detention basins is a best management practice to effectively control floods, to provide additional surface storage for excess floodwater and to compensate for the adverse effects of urban development. Traditional field‐based levelling survey methods are very time consuming and subject to human‐induced arbitrariness and error. This article presents an approach to modelling detention basins measured from light detection and ranging remote sensing data. A case study is illustrated by using the White Oak Bayou watershed of Harris County, Texas. The storage–stage curve obtained from the volumetric analysis is used in a modified detention basins routing model, which was developed by adding the weir structure control to the traditional hydrologic reservoir routing equations. The model simulation showed that the peak flow of the synthetic 100‐year reoccurrence event was effectively reduced and delayed by the detention basins. The comparison with the simulation results from the traditional reservoir routing model suggested that previous studies using the reservoir routing model were likely to underestimate the flood reduction effect of detention basins. The sensitivity analysis of the parameters showed that the detention basin design and evaluation should pay more attention on the weir height and river channel's roughness. Copyright © 2011 John Wiley & Sons, Ltd.     

不同养殖模式对鲫鱼(Carassius auratus)营养品质及特征风味的影响研究

为研究池塘内循环流水养殖与传统池塘养殖模式条件下鲫鱼的营养品质及特征风味, 对鲫鱼形体、基础营养成分、蒸煮损失和持水力、肌肉蛋白质消化率、氨基酸、脂肪酸和挥发性化合物含量等指标进行分析评价。结果表明: 跑道组和池塘组鲫鱼的形体指标和基础营养成分具有较大差异, 其中跑道组具有高蛋白低脂肪的特点。同时两种养殖模式下鲫鱼的蒸煮损失和持水力相接近。跑道组鲫鱼蛋白质消化率显著高于池塘组鲫鱼(P<0.05)。游离氨基酸分析结果表明跑道组鲫鱼中鲜味氨基酸(天冬氨酸和谷氨酸)和甜味氨基酸(谷氨酸和丙氨酸等)含量均显著高于池塘组(P<0.05), 因此跑道组鲫鱼可能具有更佳的风味。此外两种养殖模式下鲫鱼肌肉氨基酸组成无显著差异(P<0.05), 然而跑道组鲫鱼不饱和脂肪酸含量(4.803 8 g/100 g)高于池塘组(1.411 1 g/100 g)。基于GC-IMS结果可知, 两种养殖模式下鲫鱼的挥发性化合物具有显著差异。通过层次聚类热图分析从57种挥发性化合物中筛选出了33种特性差异标记物用以区分不同养殖模式下的鲫鱼。研究结果表明, 池塘内循环流水跑道养殖在一定程度上对鲫鱼营养品质和特征风味有所改善, 可以通过GC-IMS技术进行有效快速鉴别, 同时阐明了风味感官差异的物质基础, 为淡水鱼养殖模式选择和产品定位提供理论基础。     

Welcome to Woodside: Inverbrackie Alternative Place of Detention and performances of belonging in Woodside,South Australia,and Australia

Alternative Places of Detention (APODs) are a new way of detaining asylum seekers in Australia. The establishment of APODs creates a new formal structure of belonging in Australia which challenges everyday practices of belonging and senses of belonging at the local and national scale. This paper examines practices of belonging which emerged following the establishment of the Inverbrackie APOD in Woodside, South Australia. Using a critical discourse analysis approach, informed by the insights of theories of performativity, this research explores the competing stories of two broadly defined groups (opponents and supporters of Inverbrackie) engaged in a dialogue about asylum seekers, refugees, immigration detention and belonging. While opposition to the APOD was vocal and frequent in the lead-up to the establishment of the detention centre, once the Inverbrackie APOD became operational opponents’ voices began to fade. On the other hand, supporters continued to say things—and more importantly continued to do things—to nurture belonging for asylum seekers in Inverbrackie, Woodside, and Australia.