A bstract The large volume scenario (LVS) for de Sitter compactifications of the type IIB string is, at least in principle, well protected from various unknown corrections. reason is that, by construction, Calabi-Yau exponentially large. However, as has recently been emphasised, practice most explicit models are rather on border parametric control. We identify and quantify parametrically what w...

_ The heavy quark-self-energy in nonrelativistic lattice QCD is calculated to O(cx,) in perturbation theory. An action which includes all spin-independent relativistic corrections to order v2, where v is the typical heavy quark velocity, and all @n-dependent corrections to order v4 is used. The standard Wilson action and . _ an improved multi-plaquette action are used for the gluons. Results fo...

The masses and dispersions of light hadrons are calculated in lattice QCD using an O(a) tadpole-improved gluon action and an O(a) tadpole-improved next-nearest-neighbor fermion action originally proposed by Hamber and Wu. Two lattices of constant volume with lattice spacings of approximately 0.40 fm and 0.24 fm are considered. The results reveal some scaling violations at the coarser lattice sp...

The heavy quark self-energy in nonrelativistic lattice QCD is calculated to O(αs) in perturbation theory. An action which includes all spin-independent relativistic corrections to order v, where v is the typical heavy quark velocity, and all spin-dependent corrections to order v is used. The standard Wilson action and an improved multiplaquette action are used for the gluons. Results for the ma...

Corticosteroids (CS) act synergistically with thyroid hormone (TH) to accelerate amphibian metamorphosis. Earlier studies showed that CS increase nuclear 3,5,3'-triiodothyronine (T(3)) binding capacity in tadpole tail, and 5' deiodinase activity in tadpole tissues, increasing the generation of T(3) from thyroxine (T(4)). In the present study we investigated CS synergy with TH by analyzing expre...

Abstract Resilience of ecosystems to the sudden decline large‐bodied species is dependent on characteristics surviving guild members. However, that response may also be mediated by local habitat conditions. Here, we examine mechanisms behind observed lack functional compensation in algal‐grazing insect grazers following tadpole a forested Panamanian stream. We examined: (1) shifts individual si...

Object recognition is a fundamental function of the auditory system, but the underlying mechanisms are not well understood. Acoustic communication in the Tettigoniid genus Neoconocephalus provides a useful system for studying these mechanisms. We examined the ascending interneuron pathway in three Neoconocephalus species with diverse calls and recognition mechanisms. This pathway processes spec...

We measured the critical thermal maxima (CTMax) of tadpoles of Buergeria japonica inhabiting streams and geothermal hot springs. The CTMax of all B. japonica tadpoles was over 41 C, indicating that the tadpoles are heat-tolerant. At Rushan, we monitored the temporal and spatial distribution of tadpoles over a 24-h period in a 220 cm X 70 cm-plot that is fed by a geothermal hot spring. The therm...

Ranaviruses have been associated with most of the reported larval anuran die-offs in the United States. It is hypothesized that anthropogenically induced stress may increase pathogen prevalence in amphibian populations by compromising immunity. Cattle use of wetlands may stress resident tadpole populations by reducing water quality. We isolated a Ranavirus from green frog Rana clamitans (n = 80...