Binary descriptors of image patches provide processing speed advantages and require less storage than methods that encode the patch appearance with a vector of real numbers. We provide evidence that, despite its simplicity, a stochastic hill climbing descriptor construction process defeats recently proposed alternatives on a standard discriminative power benchmark. The method is easy to impleme...

The reaction catalyzed by purified rat liver cytosol tyrosine aminotransferase (L-tyrosine + 2 oxoglutarate = p-hydroxyphenylpyruvate + L-glutamate, EC 2.6.1.5) has been analyzed with regard to product inhibition and combination with each of its rate-limiting substrates by the Hill equation. Glutamate is a linear competitive inhibitor with respect to tyrosine, a linear noncompetitive inhibitor ...

Intact mesophyll and bundle sheath chloroplasts wee isolated from the NADP-malic enzyme type C(4) plants maize, sorghum (monocots), and Flaveria trinervia (dicot) using enzymic digestion and mechanical isolation techniques. Bundle sheath chloroplasts of this C(4) subgroup tend to be agranal and were previously reported to be deficient in photosystem II activity. However, following injection of ...

We aimed to examine the effects of different energy intakes on a range of responses that are relevant to the safety of hill walkers. In a balanced design, 16 men completed a strenuous self-paced mountainous hill walk over 21 km, under either a low-energy (2.6 MJ; 616 kcal) intake (LEI) or high-energy (12.7 MJ; 3,019 kcal) intake (HEI) condition. During the hill walk, rectal temperatures were me...

Otto Warburg, the father o f cellular bioenergetics, seems to have been the first investigator to report on inhibition o f a plant biochemical reaction by a progenitor o f a selective herbicide. The year was 1920 and the compound was phenylurethane (ethyl N-phenylcarbamate or EPC). Warburg found that it strongly inhibited photosynthesis in Chlorella. EPC did not de­ velop into a commercial herb...

We review emerging strategies and progress toward modeling and simulation of 3D cell morphology and dynamics of a motile cell. We then describe our approach, based on phase field modeling, that is flexible enough to incorporate distinct substructures within a cell, how they physically interact, mobile and reacting chemical species, and chemical-mechanical transduction. We posit a modeling found...