Voltage-gated ganglion cell membrane currents were studied under whole-cell patch clamp in isolation and in retinal slices. The cells were identified by (1) backfilling their axons with rhodamine and later identifying them by their fluorescence in the slice or the mix of isolated cells or (2) by filling them with Lucifer yellow during recording in retinal slices. Both methods yielded cells with...

We evaluated the impact of commercial moss harvest on the development of an understory epiphyte community in the Pacific Northwest by characterizing natural development stages using data from both a long-term regrowth study and demographic sampling. First, experimentally stripped 1 m long cylindrats on 46 shrub stems in the Oregon Coast Range were monitored for species composition and abundance...

BACKGROUND The planorbid freshwater snails of the two genera, Biomphalaria and Bulinus -have been vigorously studied due to the role they play as intermediate hosts of schistosomiasis. In Sudan specifically, most studies have focused on the chemical and ecological control of the two genera, but few studies have looked at their biological control. This study explored the coexistence of other spe...

Bulinus truncatus snail is the intermediate host of Schistosoma haematobium, which causes serious damage to urinary system infected patients. To control it in its rapid interruption and/or elimination disease transmission would be efficient. Copper chlorophyllin (Cu-chl) and magnesium (Mg-chl); two photosensitizers used several biological applications, were bio-assayed against B. snails.  Mg-ch...

Older adults often demonstrate higher levels of false recognition than do younger adults. However, in experiments using novel shapes without preexisting semantic representations, this age-related elevation in false recognition was found to be greatly attenuated. Two experiments tested a semantic categorization account of these findings, examining whether older adults show especially heightened ...

An infinite-U term is introduced into the Holstein-Primakoff-transformed magnon hamiltonian of quantum Heisenberg magnetic models of spin s. This term removes the unphysical spin wave states on every site and truncates automatically the expansion in powers of the magnon occupation operator. The resultant strong-coupling magnon hamiltonians are accurately equivalent to the original spin hamilton...

In this note we study the SYK model with one time point, recently considered by Saad, Shenker, Stanford, and Yao. Working in a collective field description, they derived remarkable identity: square of partition function fixed couplings is well approximated "wormhole" saddle plus "pair linked half-wormholes" saddle. It explains factorization decoupled systems. Here, derive an explicit formula fo...

The transmission in West Africa of Schisto&&a haematobium by Bulinus truncatus and B. globosus is well known (BROWN, 1980). On the contrary, B. senegalensis, widely distributed in the sub-desert and sahelian zone and associated principally with a temporary environment (BETTERTON et al., 1983), has been found naturally infected in Senegal and The Gambia only (VERCRUYSSE et al., 1985). In Niger, ...

BACKGROUND Schistosomiasis is classically described as a rural disease that occurs in areas with poor sanitary conditions. However, over recent decades, there has been an expansion of schistosomiasis foci towards urban areas faced with a rapid and disordered urbanization. In Bamako, Mali, the impact of environmental change on vector-borne diseases such as schistosomiasis is not well known. This...