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Optical in Biological Definition

Brain

... lobes that are flanked by two large optical lobes on the left and right (Butler, 2000). ... the brain can be divided into four parts, the optical lobes, the protocerebrum, the deutocerebrum, and the tritocerebrum. The optical lobes are positioned behind each eye and process ...

Microscope

... the first to be invented—is the optical microscope . This is an optical instrument containing one or more lenses ... showTocToggle("show","hide") 1 Simple optical microscope 2 ...

Optical spectrum

... The optical spectrum ( light or visible spectrum ) is the ... human eye . There are no exact bounds to the optical spectrum; a typical human eye will respond to ... at ~555 nm , in the yellow region of the optical spectrum. Wavelengths visible to the eye are ...

Amino acid

... , hydrophilic ( polar ), and hydrophobic ( nonpolar ). Isomerism Except for glycine , where R = H, amino acids occur in two possible optical isomers , called D and L. L amino acids represent the vast majority of amino acids found in proteins . D amino acids are found in some proteins ...

Anton van Leeuwenhoek

... was born in a house at the corner of Lion's Gate in Delft. Van Leeuwenhoek translates as "from lion's corner". Van Leeuwenhoek ground over 500 optical lenses during his lifetime. His microscope was used and improved by Christiaan Huygens for his own investigations into microscopy. He was ...

Bacterium

... 1998;180:4765-4774. Fulltext / PMID 9733676 . External links Tree of Life Videos of bacteria swimming and tumbling, use of optical tweezers and other fine videos. Bacterial Nomenclature Up-To-Date from DSMZ ...

Biological tissue

... , or, in connection with disease, histopathology . The classical tools for studying the tissues are the wax block, the tissue stain, and the optical microscope , though developments in electron microscopy , immunofluorescence, and frozen sections have all added to the sum of knowledge in the last ...

Biophysics

... gel blotting, fluorescence labeling and in vivo staining are used so that experimental results are observable with an unaided eye or, at most, optical magnification . Using these techniques, biologists attempt to elucidate the complex systems of interactions that give rise to the processes that ...

Chromosome

... chromosomes are condensed and called metaphasic chromosomes. This is the only natural context in which individual chromosomes are visible with an optical microscope . Prokaryotes do not possess histones or nuclei. In its relaxed state, the DNA can be accessed for transcription , regulation, and ...

Diabetes mellitus

... hours or minutes. If left untreated this can result in diabetic coma and death. A blood glucose test strip for an older style (ie, optical color sensing) monitoring system Prolonged and elevated levels of glucose in the blood, which is left unchecked and untreated will, over time, ...

Diffusion

... diffusion of a solute across a selectively permeable membrane . Photon diffusion When photons travel through a material with a high optical depth and a very short mean free path , their behavior is dominated by scattering and the path of any given photon's path is effectively a ...

Bacterium

... 1998;180:4765-4774. Fulltext / PMID 9733676 . External links Tree of Life Videos of bacteria swimming and tumbling, use of optical tweezers and other fine videos. Bacterial Nomenclature Up-To-Date from DSMZ ...
Other Contents
(Date:10/17/2014)... critical and pertinent for practicing physicians and clinicians given ... The Journal, Disaster Medicine and Public Health Preparedness ... Public Health, to surround the public, medical professionals and ... , On October 17, the journal published ... was prepared by Dr. Eric Toner, internist and emergency ...
(Date:10/16/2014)... Mary,s Virginia Institute of Marine Science have received ... Agency to identify the streams and wetlands most ... to help local governments and citizens conserve these ... a dataset of tidal-marsh observations first gathered by ... historical baseline can today,s researchers accurately map the ...
(Date:10/16/2014)... women experienced improvements in vaginal atrophy, with no ... after 12 weeks of daily 10 milligram (mg) ... supplement previously shown to help relieve certain menopause ... reported in a poster at the North American ... "These data documented improved vaginal epithelium, without significant ...
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(Date:10/22/2014)... Oct. 21, 2014 (HealthDay News) -- The United ... arriving from Ebola-affected nations of West Africa land ... them for infection with the virus. In ... Johnson noted that 94 percent of air passengers ... at one of these five airports -- New ...
(Date:10/22/2014)... Grants Pass, OR (PRWEB) October 22, 2014 ... while Southern California’s fresh water supply runs dangerously low, ... climate change. Southern Oregon’s rivers, despite the lowest mountain ... fast even in late summer and early autumn.* That ... Urness, authors of the new book “Hiking Southern Oregon,” ...
(Date:10/22/2014)... Lintelus, Inc., an event software provider, ... Sales, will be speaking on the subject of “Event ... October 28, at the Holiday Inn in New York ... well as a Tech Demo at 12:45pm, to educate ... more engaging event experience. , The Annual Meetings Technology ...
(Date:10/22/2014)... TUESDAY, Oct. 21, 2014 (HealthDay News) -- Two sisters ... and heart damage. Ilina and Medha Krishen use ... for sounds of trouble in breathing patterns or heartbeats. ... School in Michigan, wanted to find a way to ... air pollutants. Using an electronic stethoscope, Ilina recorded one ...
(Date:10/22/2014)... HealthDay Reporter TUESDAY, Oct. 21, ... Ebola while working for NBC News in Liberia has ... isolation unit at Nebraska Medical Center in Omaha, where he had ... A blood test confirmed by the U.S. Centers for Disease ... to Providence, R.I., NBC News reported Tuesday night. ...
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