Upon extended aging at room temperature, ethylene/methacrylic acid (E/MAA) ionomers develop an endotherm near 50 °C in their differential scanning calorimetry traces. The origin of this low-temperature endotherm has been the subject of considerable debate, in part because direct structural probes have been little applied to its study. Here, we use in situ small-angle X-ray scattering and wide-angle X-ray diffraction to show that this endotherm reflects the melting of thin polyethylene crystals, which gradually develop following primary crystallization. These secondary crystals form within the amorphous layers separating primary crystals. When the framework of primary crystals is oriented by crystallization during flow, the secondary crystals follow this orientation, indicating that the secondary crystals are not isometric fringed micelles but instead have a substantial lateral extent.
yes
endotherm' endotherm'
Endotherm
An endotherm is an animal that maintains its body temperature by producing heat from energy from food. Ectotherms get their heat only from the environment. The honey badger is a mammal, and, like all mammals, is an endotherm.
Yes a rat is an endotherm, most homeothermic animals are endothermic which means they maintain a warm body temperature by means of internal (metabolic) heat production.
Ectothermic means its cold bloodedendothermic means that its warm bloodedOne trait that distinguishes the major groups of vertebrates from one another is the way in which they control their body temperature. Most fish, amphibians, and reptiles have body temperatures that are close to the temperature of their environment.2 Fish, amphibians, and reptiles are ectotherms. An ectotherm is an animal whose body does not produce much internal heat. Its body temperature changes depending on the temperature of the environment. For example, when a turtle is lying in the sun on a riverbank, it has a higher body temperature than when it is swimming in a cool river. Ectotherms are sometimes called "cold-blooded," but that is misleading. The blood of ectotherms is often quite warm.3 In contrast to the turtle, a beaver would have the same body temperature whether it was in cool water or on warm land. The beaver is an endotherm. An endotherm is an animal whose body controls and regulates its temperature by controlling the internal heat it produces. An endotherm's body temperature usually does not change much, even when the temperature of its environment changes. Mammals and birds are endotherms. They have a stable body temperature that is typically much warmer than their environment. Endotherms are often called "warm-blooded" animals.
The Temperature Control Module is located at the center of the instrument panel......
they are endotherm
Endotherm
endotherm
Down feathers provide a an insulating layer next to the skin of adult birds and cover the bodies of young birds. Endotherm maintain a constant body temperature.
both endothermic and ectothermic animals must regulate their body temperature