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Richard M. Eakin
Richard Marshall Eakin ( ; May 5, 1910 – November 25, 1999), was an American zoologist and professor at the University of California, Berkeley. He was widely known for portraying prominent historical scientists during some of his lectures; dressing in costume and speaking in character to entertain and inform his students. A 1953 Guggenheim fellow, he wrote several books and more than 200 scientific papers. His research focused on eyes and vision in animals, especially the parietal eye or "third eye" of vertebrates, as well as animal embryology. He served as chairman of the UC Berkeley Department of Zoology for over 10 years, was elected president of the Western Society of Naturalists and American Society of Zoologists, and was a fellow of the California Academy of Sciences. Eakin was born in Florence, Colorado, and grew up in Tulsa, Oklahoma. He initially studied at the University of Tulsa, planning a career in the clergy, before switching to zoology, earning a bachelor's degree ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gregor Mendel
Gregor Johann Mendel, OSA (; cs, Řehoř Jan Mendel; 20 July 1822 – 6 January 1884) was a biologist, meteorologist, mathematician, Augustinian friar and abbot of St. Thomas' Abbey in Brünn (''Brno''), Margraviate of Moravia. Mendel was born in a German-speaking family in the Silesian part of the Austrian Empire (today's Czech Republic) and gained posthumous recognition as the founder of the modern science of genetics. Though farmers had known for millennia that crossbreeding of animals and plants could favor certain desirable traits, Mendel's pea plant experiments conducted between 1856 and 1863 established many of the rules of heredity, now referred to as the laws of Mendelian inheritance. Mendel worked with seven characteristics of pea plants: plant height, pod shape and color, seed shape and color, and flower position and color. Taking seed color as an example, Mendel showed that when a true-breeding yellow pea and a true-breeding green pea were cross-bred their ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Tulsa
The University of Tulsa (TU) is a private research university in Tulsa, Oklahoma. It has a historic affiliation with the Presbyterian Church and the campus architectural style is predominantly Collegiate Gothic. The school traces its origin to the Presbyterian School for Girls, which was established in 1882 in Muskogee, Oklahoma, then a town in Indian Territory, and which evolved into an institution of higher education named Henry Kendall College by 1894. The college moved to Tulsa, another town in the Creek Nation during 1904, before the state of Oklahoma was created. In 1920, Kendall College was renamed the University of Tulsa. The University of Tulsa is Carnegie Classification of Institutions of Higher Education, classified"> University of Tulsa. "History & Traditions." Undated. T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pineal Gland
The pineal gland, conarium, or epiphysis cerebri, is a small endocrine gland in the brain of most vertebrates. The pineal gland produces melatonin, a serotonin-derived hormone which modulates sleep patterns in both circadian and seasonal cycles. The shape of the gland resembles a pine cone, which gives it its name. The pineal gland is located in the epithalamus, near the center of the brain, between the two hemispheres, tucked in a groove where the two halves of the thalamus join. The pineal gland is one of the neuroendocrine secretory circumventricular organs in which capillaries are mostly permeable to solutes in the blood. Nearly all vertebrate species possess a pineal gland. The most important exception is a primitive vertebrate, the hagfish. Even in the hagfish, however, there may be a "pineal equivalent" structure in the dorsal diencephalon. The lancelet '' Branchiostoma lanceolatum'', an early chordate which is a close relative to vertebrates, also lacks a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Photoreceptor Cell
A photoreceptor cell is a specialized type of neuroepithelial cell found in the retina that is capable of visual phototransduction. The great biological importance of photoreceptors is that they convert light (visible electromagnetic radiation) into signals that can stimulate biological processes. To be more specific, photoreceptor proteins in the cell absorb photons, triggering a change in the cell's membrane potential. There are currently three known types of photoreceptor cells in mammalian eyes: rods, cones, and intrinsically photosensitive retinal ganglion cells. The two classic photoreceptor cells are rods and cones, each contributing information used by the visual system to form an image of the environment, sight. Rods primarily mediate scotopic vision (dim conditions) whereas cones primarily mediate to photopic vision (bright conditions), but the processes in each that supports phototransduction is similar. A third class of mammalian photoreceptor cell was disc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Head Of Rana Temporaria Showing The Unpaired Pineal Eye
A head is the part of an organism which usually includes the ears, brain, forehead, cheeks, chin, eyes, nose, and mouth, each of which aid in various sensory functions such as sight, hearing, smell, and taste. Some very simple animals may not have a head, but many bilaterally symmetric forms do, regardless of size. Heads develop in animals by an evolutionary trend known as cephalization. In bilaterally symmetrical animals, nervous tissue concentrate at the anterior region, forming structures responsible for information processing. Through biological evolution, sense organs and feeding structures also concentrate into the anterior region; these collectively form the head. Human head The human head is an anatomical unit that consists of the skull, hyoid bone and cervical vertebrae. The term "skull" collectively denotes the mandible (lower jaw bone) and the cranium (upper portion of the skull that houses the brain). Sculptures of human heads are generally based on a skel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sagehen Creek Field Station
Sagehen Creek Field Station is a research and teaching facility of the University of California at Berkeley's Office of the Vice Chancellor for Research, the Berkeley Natural History Museums & the University of California Natural Reserve System. Sagehen is also a member of the Organization of Biological Field Stations. The Station was established in 1951 with the signing of a long-term special use permit with the USDA Forest Service; today, this relationship includes the Tahoe National Forest which manages the land, & the Pacific Southwest Research Station, which created the Sagehen Experimental Forest on 28 Nov. 2005. Sagehen serves as the hub of a much broader network of research areas known as the Central Sierra Field Research Stations. CSFRS consists of: * Sagehen Creek Field Station * Central Sierra Snow Laboratory * Onion Creek Experimental Watershed * Chickering American Reserve * North Fork Association Lands North is one of the four compass points or cardinal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bodega Marine Reserve
Bodega Marine Reserve is a nature reserve and marine reserve on the coast of northern California, located in the vicinity of the Bodega Marine Laboratory on Bodega Head. It is a unit of the University of California Natural Reserve System, administered by the University of California, Davis. Features The reserve is adjacent to Bodega Bay and the open Pacific Ocean, on a peninsula in rural western Sonoma County, California, Sonoma County. Natural hazards of the area include high cliffs, sleeper waves, white sharks, Toxicodendron diversilobum, poison oak, Lyme disease, hantavirus, skunks, and Cougar, mountain lions. See also *California coastal prairie *Northern coastal scrub *California coastal sage and chaparral ecoregion References External links * Marine reserves of the United States Protected areas of Sonoma County, California University of California, Davis University of California Natural Reserve System Bodega Bay {{SonomaCountyCA-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of California, Berkeley College Of Letters And Science
The College of Letters and Science (L&S) is the largest of the 14 colleges at the University of California, Berkeley and encompasses the liberal arts. The college was established in its present state in 1915 with the merger of the College of Letters, the College of Social Science, and the College of Natural Science. As of the 2022-23 academic year, there were about 23,601 undergraduates and 2,417 graduate students enrolled in the college. The College of Letters and Science awards only Bachelor of Arts degrees at the undergraduate level, in contrast to the other schools and colleges of UC Berkeley which award only Bachelor of Science degrees at the undergraduate level. Faculty and students L&S is organized into five divisions: Arts and Humanities, Biological Sciences, Mathematical and Physical Sciences, Social Sciences, and the Undergraduate Division. Of the graduate divisions, Social Sciences is the most popular, followed by Mathematical and Physical Sciences, Arts and H ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Forestry
Forestry is the science and craft of creating, managing, planting, using, conserving and repairing forests, woodlands, and associated resources for human and environmental benefits. Forestry is practiced in plantations and natural stands. The science of forestry has elements that belong to the biological, physical, social, political and managerial sciences. Forest management play essential role of creation and modification of habitats and affect ecosystem services provisioning. Modern forestry generally embraces a broad range of concerns, in what is known as multiple-use management, including: the provision of timber, fuel wood, wildlife habitat, natural water quality management, recreation, landscape and community protection, employment, aesthetically appealing landscapes, biodiversity management, watershed management, erosion control, and preserving forests as "sinks" for atmospheric carbon dioxide. Forest ecosystems have come to be seen as the most important comp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Walter Mulford
Walter Mulford (September 16, 1877 – September 7, 1955) was an American forester for the state of Connecticut, and a professor. He was the first state forester in the United States. Biography He was born on September 16, 1877, in Millville, New Jersey. He was professor at the University of Michigan (1905–1911), and Cornell University (1911–1914), the latter at which he helped re-establish and lead a department of forestry. In 1914 he came to the University of California, Berkeley, where he served until his retirement in 1947, filling successively the roles of chief of Division of Forestry, chairman of the Department of Forestry, and first dean of the School of Forestry. He served as president of the Society of American Foresters in 1924, of which he was elected fellow in 1939. The University of Michigan bestowed on him an honorary Doctor of Science degree in 1938. He died on September 7, 1955, at a sanitarium in St. Helena, California at the age of 78. Legacy Mulford Hall, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ichthyology
Ichthyology is the branch of zoology devoted to the study of fish, including bony fish ( Osteichthyes), cartilaginous fish (Chondrichthyes), and jawless fish ( Agnatha). According to FishBase, 33,400 species of fish had been described as of October 2016, with approximately 250 new species described each year. Etymology The word is derived from the Greek words ἰχθύς, ''ikhthus'', meaning "fish"; and λογία, ''logia'', meaning "to study". History The study of fish dates from the Upper Paleolithic Revolution (with the advent of "high culture"). The science of ichthyology was developed in several interconnecting epochs, each with various significant advancements. The study of fish receives its origins from humans' desire to feed, clothe, and equip themselves with useful implements. According to Michael Barton, a prominent ichthyologist and professor at Centre College, "the earliest ichthyologists were '' hunters and gatherers'' who had learned how to obtain the most ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Berkeley, California
Berkeley ( ) is a city on the eastern shore of San Francisco Bay in northern Alameda County, California, United States. It is named after the 18th-century Irish bishop and philosopher George Berkeley. It borders the cities of Oakland and Emeryville to the south and the city of Albany and the unincorporated community of Kensington to the north. Its eastern border with Contra Costa County generally follows the ridge of the Berkeley Hills. The 2020 census recorded a population of 124,321. Berkeley is home to the oldest campus in the University of California System, the University of California, Berkeley, and the Lawrence Berkeley National Laboratory, which is managed and operated by the university. It also has the Graduate Theological Union, one of the largest religious studies institutions in the world. Berkeley is considered one of the most socially progressive cities in the United States. History Indigenous history The site of today's City of Berkeley was the territory ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
