体视全息照相的简化设计

设计一简单的线阵透镜照相机，和彩虹全息术相结合进行自然场景的立体记录与显示。较详细地分析了它的原理并给出了实验结果。     

结构生色彩虹丝蠕变性能研究

结构生色彩虹膜是用物理方法设计成的一种新型绿色材料，其产品彩虹丝广泛应用于纺织领域。研究彩虹丝蠕变性能，对纺织加工及应用具有一定的指导意义。本文应用拉伸法对彩虹丝的蠕变性能进行测定。     

彩虹全息综合狭缝的理论分析

本文对一步无狭缝彩虹全息中平移物体和透镜形成的综合狭缝的位置和宽度进行了比较全面的理论分析,并提出了获得综合狭缝的一种新方法。     

二维编码片的一步彩虹全息术

本文提出了二维编码透明片的一步彩虹全息的记录方法，并给出了有关实验结果。     

Distribution and Abundance of Larval Fish in the Nearshore Waters of Western Lake Huron

Ichthyoplankton was collected at 17 nearshore (bottom depth ≥5 m but ≤10 m) sites in western Lake Huron during 1973–75 with a 0.5-m net of 351-micron mesh towed at 99 m/min. Larvae of rainbow smelt (Osmerus mordax) dominated late spring and early summer catches and larvae of alewives (Alosa pseudoharengus) the midsummer catches. Larval yellow perch (Perca flavescens) were caught in early summer but were rarely the dominant species. The time of spawning and hatching, and thus occurrence of larvae, differed between areas but was less variable for alewives than for yellow perch. The appearance of larvae in Saginaw Bay was followed successively by their appearance in southern, central, and northern Lake Huron. Rainbow smelt were most abundant in northern Lake Huron and yellow perch and alewives in inner Saginaw Bay. Densities of either rainbow smelt or alewives occasionally exceeded 1/m³, whereas those of yellow perch never exceeded 0.1/m³. Abundance of alewives was usually highest 1 to 3 m beneath the surface and that of rainbow smelt 2 to at least 6 m beneath the surface. Important nursery areas of rainbow smelt were in bays and off irregular coastlines and those of yellow perch were in bays. All nearshore waters seemed equally important as nursery areas of alewives.     

Biological half-lives of eight polycyclic aromatic hydrocarbons (PAHs) in rainbow trout (Salmo gairdneri)

Adult rainbow trout were exposed to a single oral dose containing a mixture of eight PAHs, and fish were sampled at intervals between 5–48 days after exposure. Regression analyses on whole fish indicate levels declined significantly in four of the compounds monitored. Their biological half-lives were estimated as 9 days for phenanthrene, 7 days for fluorene and anthracene and 6 days for fluoranthene. No reliable estimates could be derived for benzo[a]pyrene, benz[a]anthracene, chrysene or pyrene because of low or nondetectable concentrations at the first sample interval although it could be suggested that their half-lives would be less than several days. The data also suggested that these PAHs are poorly absorbed by trout.     

Protective effect of dietary tomatine against dibenzo[a,l]pyrene (DBP)-induced liver and stomach tumors in rainbow trout

The potential anti-carcinogenic effects of tomatine, a mixture of commercial tomato glycoalkaloids alpha-tomatine and dehydrotomatine (10:1), were examined in the rainbow trout chemoprevention model. Prior to the chemoprevention study, a preliminary toxicity study revealed that tomatine in the diet fed daily at doses from 100 to 2000 parts per million (ppm) for 4 weeks was not toxic to trout. For the tumor study, replicate groups of 105 trout were fed diets containing dibenzo[a,l]pyrene (DBP) alone (224 ppm), (N = 3), DBP plus tomatine at 2000 ppm (N = 2), tomatine alone (N = 2), or control diet (N = 2) for 4 weeks. The fish were then returned to control diet for 8 months and necropsied for histopathology. Dietary tomatine was found to reduce DBP-initiated liver tumor incidence from 37.0 to 19.0% and stomach tumor incidence from 46.4 to 29.4%. Tomatine also reduced stomach tumor multiplicity. The tomatine-containing diets did not induce mortality, change in fish weights, or liver weights. No adverse pathological effects in the tissues of the fish on the tomatine diets were observed. Dose-response and chemopreventive mechanisms for tomatine protection remain to be examined. This is the first report on the anticarcinogenic effects of tomatine in vivo.     

Influence of cover on mean column hydraulic characteristics in small pool riffle morphology streams

The field of ecohydraulics tries to link biological‐ and physical‐based processes in order to describe better the distribution of plants and animals in rivers. We tested the hypothesis that the influence of cover in pools and riffles would not be detectable using average velocity, turbulent kinetic energy and turbulent intensity, and compared these measurements to locations distant from cover. We measured water velocity fluctuations using an acoustic Doppler velocimeter. We found that turbulent intensity in the downstream direction (u′) and the transverse or cross‐stream direction (v′) were the most useful in detecting the presence of cover in pools and riffles. Differences were apparent between locations near cover in pools and riffles. Turbulent kinetic energy (k) and vertical turbulent intensity (w′) detected cover in pools but not in riffles. Average downstream velocity ( ) detected cover in riffles but not in pools. Average cross‐stream ( ) and vertical ( ) velocities did not detect any differences at all. We rejected the null hypothesis and concluded that turbulence caused by habitat features such as large rocks, wood or other channel complexities results in a statistically meaningful difference in flow characteristics in locations near cover. This finding was tempered by the fact that knowledge about how fish respond to turbulence is limited in comparison to our understanding of average velocity values. Despite the potential benefits to habitat modelling of incorporating turbulence‐based metrics, application of these findings will be challenging because turbulence modelling is difficult and current models may not be appropriate for application to rivers. Copyright © 2007 John Wiley & Sons, Ltd.     

The Future is Curved

The internationally renowned Danish-Icelandic artist Olafur Eliasson is well known for his large-scale installations that foreground the importance of embodied space by using elemental materials such as light, water and air temperature to create immersive experiences for viewers. This was most conspicuously showcased at Tate Modern in London by The Weather Project (2003), which placed a glowing sun in the Turbine Hall to dramatic effect. Here, two of Eliasson's projects are featured - Your rainbow panorama and Movement microscope - that continue the artist's investigations into ‘unlearning space’ by exploring how space is perceived and created through the presence and movement of the human body.