Image
from article Pituitary gland disorders
Anatomy of the human pituitary gland, which is attached to the base of the brain. (Copyright © McGraw Hill)
Search Results
Search Results
Refine this search
Search result paging links
9,178 results
Image
from article Pituitary gland disorders
Infarction (obstruction of the blood supply) of the pituitary gland. This pituitary gland is almost entirely infarcted. Only a thin rim of viable cells remains (arrow). Pituitary infarcts can occur during pregnancy (Sheehan's disease) or as a result…
Image
from article Strychnos
Strychnos nux-vomica: close-up view of leaves and flowering branch. (Photo courtesy of Dinesh Valke)
Image
from article Space flight
Earthrise, with the surface of the Moon in the foreground, photographed by astronauts aboard the Apollo 8 mission in late 1968. Apollo 8 was the first crewed mission to the Moon. (Credit: NASA)
Image
from article Space flight
Soyuz, a third-generation Soviet spacecraft. 1 m = 3.3 ft.
Image
from article Space flight
Comparison of U.S. spacecraft and launch vehicle configurations through 1972. (Credit: NASA)
Image
from article Space flight
The Apollo 11 lunar module on the surface of the Moon in July 1969. (Credit: NASA)
Image
from article Space flight
Skylab in orbit around Earth. (Credit: NASA)
Image
from article Space flight
The space shuttle Discovery launching in July 2006. (Credit: NASA)
Image
from article Space flight
Shuttle Atlantis returning home to Kennedy Space Center after its final mission, July 21, 2011. (Credit: NASA)
Image
from article Space flight
The completed International Space Station in orbit around Earth. (Credit: NASA)
Image
from article Space flight
Artist's impression of the Space Launch System with the Orion spacecraft on top. (Credit: NASA)
Image
from article Wire drawing
Wire being drawn through a die.
Image
from article Wire drawing
Comparison of (a) ideal and (b) redundant deformation.
Image
from article Wire drawing
Variation of the work terms with die angle according to Eqs. (1), (3), (4), and (6), with ε = 0.3 and η = 0.08.
Image
from article Wire drawing
Dependence of the efficiency on die angle for several reductions. A friction coefficient of μ = 0.08 was assumed.
Image
from article Wire drawing
Comparison of the predictions of I.F. from Eq. (12) with experiments on copper.
Image
from article Wire drawing
Microstructure of a tungsten wire cold-drawn to an 87% reduction of area, viewed along the wire axis.
Image
from article Metal rolling
Rolling process. (a) Direction of friction forces in the roll gap. (b) Velocity distribution. (c) Normal pressure acting on the strip in the roll gap.
Image
from article Metal rolling
Basic types of roll arrangement. (a) Two-high. (b) Three-high. (c) Four-high. (d) Cluster. (e) Tandem rolling with three stands. (f) Planetary mill.
Image
from article Metal rolling
Development of the Mannesmann process for producing seamless tubing (a–c explained in text).
Image
from article Trace fossils
Domichnial dwelling burrow with pelleted wall, probably created by a burrowing crustacean. Ophiomorpha, Cretaceous, North Dakota. (From W. Häntzschel, in C. Teichert, ed., Treatise on Invertebrate Paleontology, pt. W, revised, University of Kansas…
Image
from article Trace fossils
Highly branched, fodinichnial mining burrow, possibly produced by a deposit-feeding crustacean or worm. (a) Chondrites, Tertiary, Austria. (b) Chondrites, Tertiary, Spain. (From W. Häntzschel, in C. Teichert, ed., Treatise on Invertebrate…
Image
from article Trace fossils
Agrichnial farming trace of an unknown organism, composed of a hexagonal, meshlike network of tunnels. Paleodictyon, Tertiary, Poland. (Photograph by W. Häntzschel)
Image
from article Trace fossils
Agrichnial farming traces of unknown organisms, including a double-spiral tunnel (Spirorhaphe) and a meshlike network of tunnels (Paleodictyon). Tertiary, Austria. (Photograph by W. Häntzschel)
Image
from article Trace fossils
Loosely meandering, agrichnial farming trace of an unknown organism. Cosmorhaphe, Tertiary, Poland. (From W. Häntzschel, in C. Teichert, ed., Treatise on Invertebrate Paleontology, pt. W, revised, University of Kansas Press, 1975)
Image
from article Trace fossils
Praedichnial boring drilled in a bivalve shell by a carnivorous gastropod. Oichnus, Recent, Texas. (Photograph by A. A. Ekdale)
Image
from article Trace fossils
Tightly meandering, pascichnial grazing trail, created by an unknown worm. Helminthoida, Tertiary, Austria. (From W. Häntzschel, in C. Teichert, ed., Treatise on Invertebrate Paleontology, pt. W, revised, University of Kansas Press, 1975)
Image
from article Trace fossils
Repichnial trail of an arthropod, possibly a trilobite. Cruziana, Cambrian, Alberta. (Photograph by J. P. A. Magwood)
Image
from article Trace fossils
Unnamed escape structure (fugichnial trace) in sandstone. Cretaceous, Utah. (Photograph by A. A. Ekdale)
Image
from article Trace fossils
Cubichnial resting trace of an ophiuroid brittle star. Asteriacites, Jurassic, Germany. (Photograph by W. Häntzschel)
Image
from article Trace fossils
Complex, composite ichnofabric created by numerous successive phases of burrowing in a fine-grained pelagic carbonate deposit, which has been weakly cemented to become chalk. Upper Cretaceous, Denmark. (Photograph by A. A. Ekdale and R. G. Bromley)
Image
from article Surveillance radar
Image
from article Guided missile
A U.S. Navy ship fires a Tomahawk cruise missile at a target in Libya as part of Operation Odyssey Dawn in 2011. (Credit: MC3 Jonathan Sunderman/US Navy/DoD)
Image
from article Guided missile
A V-2 rocket constructed by the U.S. military lifts off in this historical photo. Production and development of V-2 rockets continued in the United States after the defection of German aerospace engineers during World War II. (Credit: U.S. Army)
Image
from article Neandertals
Neandertal cranium excavated from Forbes' Quarry, Gibraltar. Note the pronounced brow ridges, large braincase, and receding forehead. (Credit: Clive Finlayson/Gibraltar Museum)
Image
from article Neandertals
Gorham's Cave, Gibraltar, is the last known site of Neandertal occupation, being dated possibly to 30,000 years ago. (Credit: Clive Finlayson/Gibraltar Museum)
Image
from article Neandertals
Reconstructed skull of a Neandertal from the cave at La Chapelle-aux-Saints, France. (Credit: Illustration adapted from an original drawing by M. F. Ashley Montagu)
Image
from article Atomic bomb
The mushroom cloud over Nagasaki, Japan, after an atomic bomb was dropped by U.S. aircraft on August 9, 1945. (Credit: Everett Historical/Shutterstock)
Image
from article Atomic bomb
Conceptual diagrams illustrating the main features of (a) implosion type and (b) gun-barrel type of fission weapons. (Credit: A. DeVolpi)
Image
from article Gain
Gain by an amplifier or other system.
Image
from article Gain
Bode diagrams. (a) Gain plot. (b) Phase plot.
Image
from article Robotics
A dexterous humanoid robot (robonaut) built at the NASA Johnson Space Center in Houston, Texas, USA to work alongside humans in space. (Credit: NASA)
Image
from article Robotics
A model for the selective compliance assembly robot arm (SCARA). It has 3 links. Horizontal links move sideways and the third (vertical) link moves up and down. It shown here with a drill, a chuck, and drill bit. (Credit: Richard Pasala)
Image
from article Robotics
The right hand of a NASA robot grasping a hook. The robot's hands closely mimics the human hand in order to use tools and handholds designed for astronauts. (Source: NASA)
Image
from article Robotics
Six-legged walking robot. (Odetics)
Image
from article Optical flat
Optical flat being used to determine flatness of seal ring. Interference bands on the seal ring face show lines of constant depth. (Van Keuren Co.)
Image
from article Optical flat
Measurement of height of sphere determined by means of gage blocks and optical flat. 1″ = 25.4 mm.
Image
from article Composite material
NASA technicians inspecting the keel section of a PRSEUS (Pultruded Rod Stitched Efficient Unitized Structure). This is a new way for aircraft sections to be built by sewing together layers and rods of composite material. (Credit: NASA…
Image
from article Composite material
Specific properties of various materials.
Image
from article Composite material
Tensile strength, modulus, and elasticity of various fiber materials. UHMWPE = ultrahigh-molecular-weight polyethylene; SiC = silicon carbide.
Image
from article Composite material
Typical autoclave layup.
Image
from article Composite material
Typical layups for (a) resin transfer molding (RTM) and (b) vacuum infusion (VI).
Image
from article Folic acid
Chemical structure of folic acid (C19H19N7O6). (Copyright © McGraw Hill)
Image
from article Digenea
Diagrams of various adult types of digenean trematodes. (After R. M. Cable, An Illustrated Laboratory Manual of Parasitology, Burgess, Minneapolis, 1940)
Image
from article Digenea
Digenean trematode life cycle. (After R. M. Cable, An Illustrated Laboratory Manual of Parasitology, Burgess, Minneapolis, 1940)
Image
from article Uninterruptible power supply
Block diagram of a line-preferred UPS (off-line technology).
Image
from article Uninterruptible power supply
Block diagram of an on-line UPS with bypass switch.
Image
from article Uninterruptible power supply
Block diagram of the flywheel rotary UPS topology.
Image
from article Uninterruptible power supply
Block diagram of diesel rotary UPS topology.
Image
from article Uninterruptible power supply
Block diagram of the online distributed configuration.
Image
from article Uninterruptible power supply
Block diagram of line-interactive distributed application.
Image
from article Uninterruptible power supply
Block diagram of the centralized approach.
Image
from article Ohmmeter
Electronic digital ohmmeter. (Tinsley)
Image
from article Ohmmeter
Diagram of ohmmeter, showing operating principles. C1, C2 = current terminals; P1, P2 = potential terminals.
Image
from article Ohmmeter
Special measuring probes (Kelvin clips), consisting of a set of leads with combined current probes (C1, C2) and potential probes (P1, P2).
Image
from article Mixing
Typical impeller-type liquid mixer. (After V. W. Uhl and J. B. Gray, Mixing: Theory and Practice, vol. 2, Academic Press, 1967)
Image
from article Mixing
Effect of impeller size and speed on flow and turbulence (shear) at constant power.
Image
from article Mixing
Common impellers. (a) Marine-type mixing propeller. (b) Axial-flow (pitched-blade) turbine. (c) Flat-blade (Rushton) turbine. (After R. H. Perry and C. H. Chilton, eds., Chemical Engineers' Handbook, 5th ed., McGraw-Hill, 1973)
Image
from article Mixing
Swirling flow pattern for impeller of any shape, without baffles. (a) Side view. (b) Bottom view.
Image
from article Mixing
Flow patterns with baffles. (a) Flow pattern for propeller with baffles at tank wall. (b) Flow pattern for turbine with baffles at tank wall.
Image
from article Mixing
Flow pattern for top-entering, off-center propeller without baffles: (a) front, (b) top, and (c) side views.
Image
from article Mixing
Side-entering propeller mixer position. With proper propeller position, no vortex will result.
Image
from article Mixing
Ribbon turbine with double spiral, for high-viscosity liquids.
Image
from article Mixing
Coexistence of (a) chaotic and (b) nonchaotic mixing in a duct-type flow.
Image
from article Mixing
Unmixing of particles of two different sizes in a rotating tumbler operating in a time periodic mode.
Image
from article Ctenothrissiformes
A Cretaceous ctenothrissiform fossil, Ctenothrissa sp. (order Ctenothrissiformes), on a limestone matrix found in Lebanon. Size: 90 mm (3.5 in.). (Photo courtesy of The Virtual Fossil Museum)
Image
from article Electric power generation
Coal-fired electric power plant. (Credit: mrclark321/Getty Images)
Image
from article Electric power generation
Steam power plant flow diagram.
Image
from article Electric power generation
Gas turbine plant flow diagram.
Image
from article Electric power generation
Cross section of a hydroelectric powerhouse. Arrangement is typical for an adjustable propeller-type reaction turbine. The intake and powerhouse are integral; waterways consist of intake, scroll case, and draft tube. Turbine and generator are set…
Image
from article Food science
Food scientist examining a tomato. (Credit: Adam Gault/Age Fotostock)
Image
from article Solution mining
Solution mining of a subsurface evaporite deposit. Mining is normally initiated at the bottom of the deposit and retreats vertically, leaving a mined-out cavity. Saturated brine is heavier (denser), and is recovered from the bottom of the cavity.…
Image
from article Solution mining
Forced-air ventilation of sulfide ore heaps during biooxidation.
Image
from article Solution mining
Sulfur production well in a Gulf Coast salt dome deposit. (a) Superheated water is pumped down the inner and outer casing strings. (b) Molten sulfur enters inner casing string. (c) Sulfur is jetted to the surface as a result of compressed air being…
Image
from article Assessing risks from nanomaterials
The size and scale of nanomaterials. The novel properties of materials with at least one dimension smaller than 100 nanometers can cause them to behave differently from their bulk counterparts. (Credit: National Nanotechnology Initiative)
Image
from article Assessing risks from nanomaterials
Comprehensive environmental assessment (CEA) structure.
Image
from article Animal testing
Mice are the most commonly used vertebrate species in animal testing and research. (Credit: Dolores Bonaparte)
Image
from article Animal testing
The use of animals in biomedical research remains essential, but the handling of these sentient beings must be done humanely to minimize and prevent animal harm. (Credit: U.S. Department of Agriculture)
Image
from article Common cold
Adenovirus structure. An adenovirus binds to the host cell via its fiber through the knob at the end of the fiber "spikes" on the capsid (protein coat) surface. (Credit: M. K. Cowan and H. Smith; copyright © McGraw Hill)
Image
from article Common cold
Human respiratory system. Common cold viruses enter through the nose, mouth, or eyes, infecting epithelial cells of the oropharynx. (Credit: M. K. Cowan and H. Smith; copyright © McGraw Hill)
Image
from article Common cold
Life cycle of a double-stranded DNA virus, such as an adenovirus. The virus attaches to specific receptors, after which it is taken up by the cell. Following entry into the cell, the viral capsid (protein coat) is digested, releasing DNA, which…
Image
from article Common cold
Electron micrograph (tinted green) of human coronavirus 229E particles. Coronaviruses are named for the corona, or halo, surrounding the capsid (protein coat). The crown-like corona results from the presence of viral spikes protruding from the viral…
Image
from article Computer-integrated manufacturing
Diagram of the architecture of manufacturing.
Image
from article Computer-integrated manufacturing
Organization of a production cell network for computer-integrated manufacturing. Ethernet, Arcnet, Wireless Application Protocol (WAP), and Canbus are international standards for communication.
Image
from article Anthrax
A color-enhanced scanning electron micrograph showing splenic tissue from a monkey with inhalation anthrax. Rod-shaped bacilli of Bacillus anthracis (yellow) and an erythrocyte (red) are shown. (Credit: Arthur Friedlander/National Institute of…
Image
from article Anthrax
Micrograph (stained with hematoxylin and eosin) showing submucosal hemorrhage in the small intestine of a person fatally affected by gastrointestinal anthrax. (Credit: Marshal Fox/Centers for Disease Control and Prevention)
Image
from article Tumor virus
Under certain conditions, human papillomaviruses are capable of causing cancer in humans. (Credit: Laboratory of Tumor Virus Biology, National Cancer Institute)
Image
from article Glass switch
OTS current-voltage characteristics.
Image
from article Glass switch
OMS current-voltage characteristics.
