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Related Concept Videos

Lampbrush Chromosomes01:51

Lampbrush Chromosomes

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In 1882, Flemming observed lampbrush chromosomes (LBC) in salamander eggs. Later in 1892, Rückert observed LBCs in shark egg cells and coined the term "lampbrush chromosomes" because they looked like brushes used to clean kerosene lamps.
LBCs are made up of two pairs of conjugating homologous chromatids. Each chromatid consists of alternatively positioned regions of condensed-inactive chromatin and loosely placed-active side loops, which can be contracted and extended. The loops...
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Focusing of Light in the Eye01:16

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Light rays enter the eye through the cornea, a transparent dome-shaped tissue that is the eye's outermost layer. The cornea bends or refracts, light rays traveling to the pupil. The shape of the cornea determines how much of the light is bent and whether the image will be focused correctly on the retina at the back of the eye. Once the light has passed through both refraction layers, it converges into a single focal point onto a small area. This is where photoreceptors start transforming...
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In order to produce glucose, plants need to capture sufficient light energy. Many modern plants have evolved leaves specialized for light acquisition. Leaves can be only millimeters in width or tens of meters wide, depending on the environment. Due to competition for sunlight, evolution has driven the evolution of increasingly larger leaves and taller plants, to avoid shading by their neighbors with contaminant elaboration of root architecture and mechanisms to transport water and nutrients.
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Photoluminescence offers a wide range of applications due to its inherent sensitivity and selectivity. This technique allows for both direct and indirect analyses of the analyte. Direct quantitative analysis is possible when the analyte exhibits a favorable quantum yield for fluorescence or phosphorescence. However, an indirect analysis may be feasible if the analyte is not fluorescent or phosphorescent, or if the quantum yield is unfavorable. Indirect methods include reacting the analyte with...
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The energy required to carry out photosynthesis is light— typically electromagnetic radiation from the sun. The range of all possible wavelengths is known as the electromagnetic spectrum.
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Using the Horseshoe Crab, Limulus Polyphemus, in Vision Research
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Visiting the Lady with the Lamp.

Tim Harrison

    Nursing Standard (Royal College of Nursing (Great Britain) : 1987)
    |May 21, 2016
    PubMed
    Summary

    Explore the Florence Nightingale Museum through two distinct experiences. One offers a visitor-friendly display at London's St Thomas' Hospital, while the other provides historical context in Turkey.

    Area of Science:

    • Medical History
    • Museum Studies

    Background:

    • Florence Nightingale's legacy is significant in nursing and healthcare reform.
    • Access to historical artifacts and context is crucial for understanding her impact.

    Observation:

    • Two primary locations offer engagement with the Florence Nightingale museum experience.
    • London's St Thomas' Hospital presents a visually appealing, accessible display.
    • A separate location in Turkey is required for deeper historical context.

    Findings:

    • Visitor experience is bifurcated, with aesthetic appeal in London and contextual depth in Turkey.
    • Geographical separation limits comprehensive understanding in a single visit.

    Implications:

    • Museum curation and accessibility can be enhanced by considering geographical distribution of related sites.

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  • Future exhibits could explore innovative ways to bridge geographical divides for a holistic visitor experience.