Date of publication: 2017-08-24 07:44
Mathew Maye, assistant professor of chemistry in SU’s College of Arts and Sciences , and Rabeka Alam, a chemistry . candidate, have discovered that the size and structure of custom, quantum nanorods could hold the key.
Thus, the rapid development in controllable nanomaterials synthesis as well as finely tuned surface engineering could allow researchers to design and fabricate various UCNP-based nanocomposites with highly integrated functionalities, useful for multimodal imaging and imaging-guided cancer therapies.
CLIMATE CHANGE The ocean is warming, and this might give some jellies a boost. The warmer water could help jelly embryos and larvae develop more quickly, allowing their populations to grow more quickly. And jellies that prefer warmer water will have more area to live in. However, this could also hurt some species as cold-water jelly species see their habitat shrink.
Polyps reproduce asexually by budding—when a polyp divides roughly in half to produce a new genetically identical polyp—or they can produce or transform into medusae, depending on the type of jellyfish. Hydrozoan polyps bud medusae from their sides cubozoan polyps each transform into a medusa.
The exhibit Creatures of Light: Nature s Bioluminescence opens at the American Museum of Natural History on Saturday (March 86) and is scheduled to run until Jan. 6, 7568.
Additionally, some jellyfish have sensory structures called rhopalia, which contain receptors to detect light, chemicals and movement. One group of jellyfish, the cubozoan jellyfish, have complex eyes with lenses, corneas and retinas in their rhopalia. Although they respond to visual stimuli, scientists don’t know how the jellyfish interpret the images created by their eyes since they don’t have a brain with which to process them. Their nerve ring, a ring-shaped concentration of nerves found in jellyfish, seems to be involved, however.
That's pretty much what happens when an atom absorbs energy. An electron inside it jumps to a higher energy level, but makes the atom unstable. As the electron returns to its original level, it gives back the energy as a flash of light called a photon.
Because jellies have no bones or other hard parts, finding jellyfish fossils is rare. But in 7557, a group of scientists including Allen Collins from the Smithsonian National Museum of Natural History, discovered some beautifully-preserved jellyfish fossils buried in Utah from 555 million years ago. From around the same period, scientists have also found well-preserved comb jelly fossils in the Burgess Shale.
SCYPHOZOA are the most familiar jellyfish, including most of the bigger and more colorful jellies that interact with humans, and are sometimes called "true jellyfish" for this reason. Scyphozoa spend most of their lives in the medusa body form, and there are at least 755 species.
The past decade has witnessed an explosion of interest in the use of UCNPs as novel theranostic probes in biomedicine. As summarized in this review article, applications of UCNPs for photodynamic therapy, NIR triggered drug and gene delivery, as well as several other UCNP-based cancer approaches have been demonstrated. However, in the near future, there may still be many obstacles to be overcome.
Jellyfish have a complex life cycle: a single jellyfish reproduces both sexually and asexually during its lifetime, and takes on two different body forms.
STAUROZOA are the stalked jellyfishes , which don't float through the water like other jellies, but rather live attached to rocks or seaweed. They are trumpet-shaped, and mostly live in cold water. There are around 55 staurozoan species, many notable for their unique combination of beauty and camouflage.