16) CELL ASHESION IS COMPROMISED IN N-CADHERIN MUTANT EMBRYOS. This image was taken using a confocal microscope (Zeiss510 META). This is a cross-section of an N-cadherin mutant embryo brain. It is labeled with b-catenin (cell surface marker, red), Sox3C (pan-neural marker, green) and DAPI (nucleus, blue). The entire dorsal region of the neuroephithelium is falling apart as cells loose adhesion with their neighbors. (WINNER-FIRST PLACE)
22) STRESS DISTRIBUTION IN PHOTOELASTIC MATERIAL UNDER COMPRESSIVE LOADING. Photoelasticity is one of the major experimental techniques for analyzing stress or strain distribution in the material subjected to load. When a loaded model is placed in the circular polariscope, the intensity of the light emerging from the analyzer in a dark field arrangement. Only isochromatics can be obtained using the circular polariscope arrangement. The principal stress difference is the function of the fringe order N and fringe constant. (WINNER SECOND PLACE)
19) AGING OF HUMAN DENTIN. The scanning electron micrograph (SEM) of fractured surfaces of dentin from tooth of a 20 year old male (left half) and 50 year old male (right half) describes the aging process in this tissue. Dentin is a hydrated biological composite made of lumens (open channels) surrounded by a highly calcified ring (peritubular dentin) embedded in a fibrous matrix of collagen (intertubular dentin). This structure of dentin changes with age and is characterized by the partial or complete occlusion (closure) of the lumens by mineral deposition (right half). (WINNER THIRD PLACE)
When the temperature is below freezing point and a source of water is available, frazil ice forms as an anchor for grand display to follow. When cold water flows from an overhang at subzero temperatures, icicles form and massive icicles 'glue' together to form a massive curtain of ice. Once the basic icefall forms, the details will be determined by the pathways of flowing water that will freeze and add mass to the icefall.
When the temperature is below freezing point and a source of water is
available, frazil ice forms as an anchor for grand display to follow.
When cold water flows from an overhang at subzero temperatures,
icicles form and massive icicles 'glue' together to form a massive
curtain of ice. Once the basic icefall forms, the details will be
determined by the pathways of flowing water that will freeze and add
mass to the icefall.
3) ILLUSTRATION-INSPIRED VISUALIZATION OF HURRICANE KATRINA. The image depicts the timestep of interest (timestep number 53) along with other timesteps 24 hours apart to provide context. The rendering of the timestep of interest in color uses the principles of preattentive processing to draw the viewer's attention.
4) ILLUSTRATION-INSPIRED VISUALIZATION OF HURRICANE KATRINA. The image depicts the combination of opacity-based techniques and speedlines to convey the motion of the hurricane. The hurricanes downward and rightward motion is apparent from the image. The thickness of the speedlines reduces as it approaches the current timestep. The image depicts the visualization of time steps 10, 35, 53 and 71 of the cloud water quantity. The growth in size of the hurricane along with the internal structure of the hurricane is visible. Acknowledgements: I would like to thank Dr. Penny Rheingans and Dr. Lynn Sparling for their feedback and Hai Zhang for the Hurricane data.
5) RED-TAILED HAWK. This immature Red-tailed Hawk can be identified by its yellow irises. Although still young, it is able to capture its prey as shown here with a squirrel in its talon. This spectacular photo was taken during the peak of the Cherry Blossom in Washington, D.C. (UMBC photo competition - Photo by Francis P. Sgambati.)
6) STARGAZER LILY. This color photograph of a stargazer lily (lilium orientalis) was taken on April 8, 2006 in Baltimore, Maryland by UMBC graduate student Erin E. Shinholt. Watching the plant from bud to blossom to death was impressive, the blossom displaying its dimension and beautiful color through its life cycle.
7) FOUR WORLDS OF EARTH. This digital color photograph was taken on June 18, 2006 from an airplane off the northern coast of Maui in Hawaii by UMBC graduate student Erin E. Shinholt. In one frame, the 'worlds' of the ocean, land, clouds, and sky can only be left to the imagination, each one embodying a depth of exploration which can never be fully accomplished in any lifetime.
8) BIOTURBATION OF ACTIVATED CARBON AND SEDIMENT BY L VARIEGATUS. Image shows sediment mixing by L. variegatus in a laboratory microcosm two days after placement of a uniform layer of activated carbon. The application of activated carbon is being investigated as a novel and low-cost in-situ remediation technology for contaminated sediments. This phenomena demonstrates that mechanical mixing of carbon and sediment by machine to enhance contaminant removal may not be necessary. Reference: This image have been accepted for publishing by Journal of environmental science and technology. Acknowledgements : Thank Dr. Ghosh who is assistant professor in department of civil and environmental engineering help take this photography.
9) REVISITING THE PAST. Science has had to revisit the past and learn from experiences. As a great source of renewal energy, Windmills enable a cleaner and healthier environment for the generations to follow.
10) ISOLATED ARTERIAL ELASTIN. High magnification scanning electron microscopy (SEM) was used to observe the elastin matrix from a human aortic specimen. The elastin was isolated by gently stirring the aorta in a solution of cyanogen bromide (CNBr) in 70% formic acid. Individual elastin fibers can be seen combining to form fenestrated sheets indicative of arterial elastin.
11) DESIGNER Vs ARITIST. Description: while the artist is trying to reflect some figures of reality through his drawings, the designer tries to predict the reality itself by mixing up Art and Science in one amazing shot.
12) CRACK IN HUMAN TOOTH ENAMEL. This image shows the crack in the human tooth enamel. Dental enamel is the hardest tissue of the human body and it is composed of aligned inorganic prisms. Each prism is surrounded by materials with high protein content. From the image, it was found that the crack in the human tooth enamel is propagated through the organic sheath. This image was taken from the SPM (Scanning Probe Microscope) method. Note: Image Size: 50µm x 50µm
13) CO-EXISTANCE. Technology has made great strides in the science of automotives, but little if any of its environmental implications are understood. Now is the time to look back and research future co-existence with nature.
14) FRINGE CONSTANTS OF PHOTOELASTIC MATERIAL. In this study a semicircular polycarbonate plate is subjected to diametrical compressive load P, and by using the theoretical analysis and experimental results (P/N), the material fringe constant is determined. The equation for the calculation of this fringe constant is given as a function of Load (P), number of fringes (N), and diameter of the circular section (D) . While performing the experiment the zero order fringes appear black while the higher order fringes are colored.
15) SINGLE CELL ANALYSIS OF THE ZEBRAFISH NEURAL TUBE. This image was taken using a confocal microscope (Zeiss510 META). The morphology of a single cell in the neuroepithelium was visualized by injecting membrane-targeted green-fluorescent-protein DNA. This results in a mosaic expression of this DNA so that only a few cells become labeled in green. The blue labeling is DAPI, visualizing the nucleus in the neural tube. -reference: Development. 2006 Oct;133(19):3895-905.
17) EYE CANCER CELLS: MORTAL COMBAT. Uveal melanoma is an eye cancer that rapidly moves to the liver resulting in high mortality. This image represents one step in our quest to understand these deadly cells. Image contains uveal melanoma cells stained by expression of green fluorescent protein and fluorescent labeled marker of the cell membrane. Cells were prepared by Uzoma Iheagwara.
18) C- of LIFE. This photo was taken during the birth of a male infant. During early labor, whenever the mother experienced a contraction, the fetal monitors revealed a corresponding unsafe drop in the infant’s heart rate. An emergency cesarean section was performed to prevent further distress to the infant. The baby weighted a healthy 8 lb 4 oz.
20) COLLAGEN BRIDGING IN HUMAN DENTIN. This scanning electron micrograph (SEM) of a crack in a piece of human dentin (one of the primary tissue of the tooth) from a 19 year old male shows the unique mechanism of crack bridging in hard tissues. The image shows evidence of collagen (~50 nm diameter) bridges that provide closure forces resulting in retardation of crack growth. The contribution of these micro and nano bridges to the overall strength of hard tissues (bone and dentin) and changes with age are growing areas of research.
21) EFFECTS OF ECSTASY. This image depicts results from positron emission tomography (PET) scans of brains in abstinent recreational 3,4-methylenedioxymethamphetamine (MDMA, "Ecstasy") users and non MDMA-using control subjects. MDMA users are shown to have global reductions in the density of brain serotonin transporters, as reflected by the binding of [11C]McN5652 and DASB to this structural component of serotonin axons. Similar reductions are seen in non-human primates with known MDMA-induced brain serotonin neurotoxicity