the aims of this study were to investigate the effect of photoperiod and light intensity on egg production and hatching rate in acartia clausi in laboratory conditions. this zooplankton was collected from caspian coastal waters of mazandaran province by the use of a 100µ net. all tests were performed in five light treatments (photoperiod) namely 24:00, 18:06, 12:12, 06:18, 00:24 (light / dark),...

objective: scientificstudies have shown that vitis vinifera (v. vinifera) contains flavonoids and stillbenoids. flavonoids are well known to possess anxiolytic activities. in view of the idea that flavonoids present in v. vinifera could be useful in anxiety, we evaluated anxiolytic-like activity of v. vinifera juice (vvj). materials and methods: light/dark box and the open field test were used ...

automobile light weight structural composites are subjected to the various loadings in their service lives. honeycombs are increasingly used as core structures in automobile light weight structures as energy absorbers. in this paper the energy absorption of honeycomb panels under impact of cylindrical projectile is numerically and experimentally studied. the effect of the core materials and cro...

Figure 1 shows an example of a light field camera with a pinhole mask in front of the sensor. If we look at the sensor in 1D and assume an total x-resolution of 900 pixels and a Θ resolution of 9, the local x resolution is 100. The disadvantages are therefore a loss in resolution and a loss of light, as most of the light gets blocked by the mask. Therefore, while this model is very clean on a t...

I once believed that there are several naturally occurring isotopes of gold. When asked, “Are there several naturally occurring isotopes of gold?” either I would simply say, “Yes,” or, if I was in the mood to be more explicit, I would say, “There are several naturally occurring isotopes of gold.” But four years ago, while browsing through the Encyclopedia Britannica article titled “Gold”, I rea...