How to cook with luscious lentils

(HealthDay)—Lentils are super nutritious legumes that sometimes take a backseat to beans because they're not always as readily available and aren't sold precooked in cans like many beans are.

Medical research

A new way of finding compounds that prevent aging

Researchers at Karolinska Institutet in Sweden have developed a new method for identifying compounds that prevent aging. The method is based on a new way of determining age in cultured human cells and is reported in a study ...


The skinny on beef

(HealthDay)—Beef often gets a bad rap, but is it really that bad for you?


Climate Change: Heat-induced heart attack risk on the rise

Heart attack, or myocardial infarction, is the number one cause of death worldwide. A study published in the European Heart Journal by scientists at Helmholtz Zentrum München and colleagues from a range of other Bavarian ...

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In physics and thermodynamics, heat is the process of energy transfer from one body or system to another due to a difference in temperature. In thermodynamics, the quantity TdS is used as a representative measure of the (inexact) heat differential δQ, which is the absolute temperature of an object multiplied by the differential quantity of a system's entropy measured at the boundary of the object.

A related term is thermal energy, loosely defined as the energy of a body that increases with its temperature. Heat is also loosely referred to as thermal energy, although many definitions require this thermal energy to actually be in the process of movement between one body and another to be technically called heat (otherwise, many sources prefer to continue to refer to the static quantity as "thermal energy"). Heat is also known as "Energy".

Energy transfer by heat can occur between objects by radiation, conduction and convection. Temperature is used as a measure of the internal energy or enthalpy, that is the level of elementary motion giving rise to heat transfer. Energy can only be transferred by heat between objects - or areas within an object - with different temperatures (as given by the zeroth law of thermodynamics). This transfer happens spontaneously only in the direction of the colder body (as per the second law of thermodynamics). The transfer of energy by heat from one object to another object with an equal or higher temperature can happen only with the aid of a heat pump, which does work.

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