For humans, caves are dark, moist, and often dangerous places. However, also home to many animals that live strange lives: blind beetles eat bat poop appreciate it; tiny spiders spin webs catch insects, known as flying food; white salamanders swim in cave ponds without getting lost, at least not all the time. Most of these do have eyes—why would you need eyes when dark? Instead, they developed ...

Let $\Theta$ be the Wigner time reversal operator for spin half and let $\phi$ a Weyl spinor. Then, left-transforming $\phi$, construct $\zeta_\lambda \Theta \phi^\ast$ yields right-transforming If instead, is spinor, then $\zeta _\rho results in spinor ($\zeta_{\lambda,\rho}$ are phase factors). This allows us to introduce two sets of four-component spinors. Setting $\zeta_\lambda$ $\zeta_\rho...

Heart of Darkness, Joseph Conrad’s masterpiece, is one the most famous British novels 20th century. Marlow’s 
 journey to Africa can be taken as voyage growth, which was mainly embodied by his self-realization. By analyzing plot structure this paper probes into deep novel with growth a clue, helpful read theme novel.

Introduction: Photoperiod is, together with temperature and food availability, one of the main stimuli in regulation gametogenesis a wide variety species. Objective: To evaluate effect photoperiod on production mature gametes cultured Arbacia dufresnii. Methods: An experiment was carried out three varying light-dark regimes/treatments: constant light (24 h light), neutral (12 light, 12 darkness...

In the vertebrate retina, the light responses of post-receptor neurons depend on the ambient or background illumination. Using intracellular recording, we have found that a circadian clock regulates the light responses of dark-adapted fish cone horizontal cells. Goldfish were maintained on a 12-hr light/12-hr dark cycle. At different times of the day or night, retinas were superfused in darknes...

In Trichoderma reesei light is an important factor in the regulation of glycoside hydrolase gene expression. We therefore investigated the influence of different light intensities on cellulase activity and protein secretion. Differentially secreted proteins in light and darkness as identified by mass spectrometry included members of different glycoside hydrolase families, such as CBH1, Cel3A, C...

The long, slender cones of the teleost retina elongate at night and contract during the day. In the Midas cichlid, Cichlasoma citrinellum, this cone excursion is elicited both by changes in light conditions and by strong endogenous circadian rhythms. In a normal day/night cycle. C. citrinellum cones change length by 69 micron. We have found that in this species an endogenous circadian rhythm in...