| Gamma_FAQ In video, computer graphics and image processing, gamma represents a numerical parameter that describes the nonlinearity of intensity reproduction. |
| Archi_Light An online magazine promoting the concept of lighting in urban and architectural contexts. |
| Denver_X-ray_Conference Provides a unique mixture of sessions on training, education, and applications and papers containing details about state-of-the-art techniques and future developments in X-ray analysis. |
| Symmation Accurate 3D medical/molecular/scientific animations and illustrations. |
| Amphibian_Malformations Tracks developments in the malformation and decline of amphibian populations in North America. |
| Northeast_Amphibian_Research_and_Monitoring_Initiative NEARMI aims to determine the proportion of surveyed areas that are occupied by various species of amphibians and to estimate amphibian population sizes and trends. |
| Toxinology Dr. Bryan Grieg Fry describes his research on, and experiences with, venomous snakes and lizards. |
| TORSCHE_Scheduling_Toolbox_for_Matlab It performs various off-line and on-line scheduling. |
| ChemSpider_-_Database_of_Chemical_Structures_and_Property_Predictions ChemSpider is a free chemistry search engine which aggregates and indexes chemical structures and their associated information into a single searchable repository. |
| Derwent_World_Patents_Index Comprehensive database of value-added patent documents. 1.5 million patent documents from 41 patent-issuing authorities are added into the database each year. |
| JAICI JAICI is a not-for-profit scientific information service organization featuring, in particular, chemical expertise. |
| Wiley\'s_Scientific,_Technical_and_Medicinal_Databases Databases covering spectroscopy (SpecInfo - NMR, MS, IR), compound chemistry (Organic Reactions, Organic Syntheses, EROS), materials properties, fundamental life sciences, and medicine. |
| Beak Article describing the anatomy of this distinctive feature of birds which, in addition to eating, can be used for grooming, manipulating objects, killing prey, probing for food, courtship, and feeding |
| Bird_Milk Article describing how the young of some birds are fed on special secretions from their parents. |
| Birdcall_synthesis Article describing how birds use their syrinx, throat and beak to make a wide range of tones without the sophisticated muscle structure possessed by humans. |
| Creches Article describing how some birds adopt the strategy of grouping their young, leaving them with a guardian while both parents go off to forage. |
| Incubation__Heating_the_Egg Most birds create the required temperature by sitting on their eggs but some transfer heat through their webbed feet, and the megapodes of Australia bury them in a mound of decaying vegetation. |
| The_Normal_Moulting_Process_in_Birds Talk given by Avian Vet A. K. Jones to a conference of the Association of Avian Veterinarians in August 1998. |
| Parental_Care The young of passerines when first hatched are naked, blind, and helpless and require much care which involves feeding, training and protection from predators. |
| Polygyny Most birds are monogamous, but in some species the occurrence of polygyny, where one male mates with more than one female, is related to high-quality territories with an abundance of resources. |
| Sexual_Selection Female birds of some species tend to choose as mates those males holding the most desirable territories, but there is little evidence that females preferentially select males with different degrees of |
| The_Structure_of_Avian_Skin_and_Feathers Technical article describing a bird's skin and associated structures, its feathers, beak, claws and spurs. |
| Teachers\'_Domain__Bird_Beak_Gallery Provides an essay on beaks, and photographs of birds heads and beaks. |
| Territoriality Article describing how birds try to exclude others of the same species from their home range. |
| Urban_Birds Article discussing how birds have adapted to urban foraging amid the artificial concrete and steel ecosystems of cities. |
| Vocal_Copying Article describing how birds learn their songs from adult tutors and may incorporate sounds from other species into their repertoire. |
| Vocal_Dialects Article describing how the songs of many avian species show geographic variation. |
| Vocal_Functions Songs identify the species of the singing bird. The territorial song of males serves the dual purpose of territorial proclamation directed at other males and of mate attraction directed toward females |
| Free_Thinkers_Blog Regular articles on scientific evidence against superstition. |
| sci_skeptic_FAQ Frequently asked questions about the sci.skeptic newsgroup. |
| Quaoar Frequently asked questions. |
| Covers,_Sumsets_and_Zero-sums A unified approach to covering systems, restricted sumsets and zero-sum problems by Zhi-Wei Sun. |
| Klein_Polyhedra Examples and algorithms for computing Klein polyhedra, also known as Arnold sails or veils (voiles), by Keith Briggs. |
| A_Mechanical_Proof_of_Quadratic_Reciprocity A paper by David M. Russinoff describing the use of the Boyer-Moore theorem prover in mechanically generating a proof of the Law of Quadratic Reciprocity. PS/PDF. |
| Anatomical_Terms_of_Location Article from Wikipedia describing the complex terminology necessary to be used when describing the anatomy of animals in order to avoid confusion. |
| Bone Article from Wikipedia describing the characteristics, functions and types of bone and how bone is formed. |
| Skulls__Structure_and_Function Though primarily designed to protect the brain, the architecture of an animal’s skull can help scientists to deduce many of its dietary and social patterns. |
| Structure_and_Function_of_Cartilage Technical notes on the composition, structure, function and aging of cartilage. [PDF] |
| The_Vertebrate__Glossary Provides a comprehensive list of definitions of the technical terms likely to be met when studying the vertrebates. |
| Flowgen_Bioscience_Ltd Distributor of materials and equipment for genomic and proteomic laboratory analysis. Page includes list of products and applications. |
Atomic Number:
54
Atomic Radius:
218 pm
Atomic Symbol:
Xe
Melting Point:
-111.79 ºC
Atomic Weight:
131.30
Boiling Point:
-108.12 ºC
Electron Configuration:
[Kr]5s24d105p6
Oxidation States:
--
Sources: CRC Handbook of Chemistry and
Physics and the American Chemical Society.
Last Updated: 12/15/2003,©
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