As well as nutritional rewards, some plants also reward ectothermic pollinators with warmth. Bumble bees have some control over their temperature, but have been shown to forage at warmer flowers when given a choice, suggesting that there is some advantage to them of foraging at warm flowers (such as reducing the energy required to raise their body to flight temperature before leaving the flower...

Cobb male broilers (28 d of age) previously fed same starter diet were offered a single diet (control) and isoproteic choices between 2.950 and 3.250 kcal/g diets from 29 to 50 d. The control and dietary energy choices were fed to broilers housed in one of 2 ambient temperatures: 21 ± 1°C (normal temperature) and 30 ± 0.6°C (heat stress). Broilers housed at 21°C fed isoproteic choices varying i...

1. Six experiments, each involving two groups of six piglets, were designed to study the influence of environmental temperature on heat production, energy retention and protein and fat gain in early weaned piglets. Immediately after weaning, at a mean age of 25 d, the animals were raised in two open circuit respiratory chambers. Each chamber was equipped with a totally wired cage. The piglets w...

This paper seeks to gain a better understanding of the thermal behavior of Li-ion cells using a previously developed twodimensional, first principles-based thermal-electrochemical modeling approach. The model incorporates the reversible, irreversible, and ohmic heats in the matrix and solution phases, and the temperature dependence of the various transport, kinetic, and mass-transfer parameters...

Double skin façade (DSF) system is used in high-rise buildings increasingly in the hot summer and cold winter zone in China, due to its advantages in sound proof, aesthetic appearance and energy efficiency. This paper demonstrated a method of obtaining the thermal characteristics of the double skin façade system using computational fluid dynamics (CFD) techniques, and evaluated the energy perfo...

PURPOSE A multi-turn transmit surface coil design was presented to improve B1 efficiency when used with current source amplification. METHODS Three different coil designs driven by an on-coil current-mode class-D amplifier with current envelope feedback were tested on the benchtop and through imaging in a 1.5 T scanner. Case temperature of the power field-effect transistor at the amplifier ou...

Here, we report results obtained during our experiments to visualize how heat transforms globular protein, lysozyme into building block of β-amyloids. Light scattering experiments showed formation of lower order associated species around 50-70 °C followed by rapid cooperativity to β-amyloid fibrils. Interestingly, crystallization drops set at higher temperatures either led to aggregates or sphe...

In this issue of Cell, exploit a clever manipulation of the Hsp100 ring chaperone, ClpB, to gain some mechanistic and physiologic understanding of the action of this chaperone in mediating ATP-dependent disaggregation of protein aggregates that accumulate in the bacterial cytoplasm under severe heat shock conditions.

The dual-airflow window could be used to conserve energy and improve indoor air quality in buildings because it works like a heat exchanger and can introduce outdoor air into buildings. In order to optimize the window design, this investigation used the orthogonal method to evaluate the importance of these 13 design parameters of the dual airflow window in energy conservation: outdoor air suppl...