151 research outputs found
Additional file 6: of Not all predicted CRISPR–Cas systems are equal: isolated cas genes and classes of CRISPR like elements
False-CRISPR elements found in Biswas’ collection. (DOCX 33 kb
Thermochromic Conductive Fibers with Modifiable Solar Absorption for Personal Thermal Management and Temperature Visualization
Thermal management textiles provide an energy-efficient
strategy
for personal thermal comfort by regulating heat flow between the human
body and the environment. However, textiles with a single heating
or cooling mode cannot realize temperature regulation under dynamic
weather. Furthermore, monocolor textiles do not satisfy aesthetic
requirements in a garment. Here, we develop a thermochromic (TC) conductive
fiber with a coaxial structure composed of a conductive core and thermochromic
shell. The TC conductive fiber-woven fabric has the ability of low-energy
dynamic thermal management by combining Joule heating and modulation
of solar absorption. Compared with commercial white fabrics, TC conductive
fabrics exhibit a maximum temperature drop of 2.5 K, while the temperature
of colored commercial fabrics is 7.5–16 K higher than that
of commercial white fabrics in the hot. In the cold, the combination
of Joule heating and the photothermal effect can provide desired thermal
comfort for humans. Meanwhile, heat obtained from solar absorption
brings the temperature of a fabric to a predetermined level, which
saves energy of 625 W/m2 compared to a conductive-fiber-based
textile. In addition, TC conductive fabrics with trichromatic evolution
provide a sensitive and instant temperature visualization capable
of identification of invisible and intense infrared radiation. These
results provide another path to expand potential applications of wearable,
flexible electronics
Mean proportion of total sensitivity to scalp, skull, and CSF as a function of source-detector separation.
<p>Errorbars represent standard errors across all nineteen locations in the International 10–20 System. Separate curves again represent pre-thresholding of the sensitivity (3-point Green's function) maps at 5, 4, 3 or 2 orders of magnitude (OM) reduction in sensitivity compared to peak.</p
Optical properties for scalp, skull, CSF, gray and white matter used for all Monte Carlo simulations.
<p>Optical properties for scalp, skull, CSF, gray and white matter used for all Monte Carlo simulations.</p
Photon sensitivity profile at a broad range of source-detector separations.
<p>Contours are drawn for each order of magnitude loss in sensitivity from peak and are truncated after 5 orders of magnitude.</p
Mean NIRS depth sensitivity in the brain plotted in two orthogonal ways, by SD separation.
<p>(A) The top two traces represent scalp (blue) and skull (green) sensitivity. Sensitivity to scalp and skull were equal at a SD separation of 25 mm. On average, 1% or more of the sensitivity profile was achieved for all of the most superficial 11.2 mm of the intracranial volume at SD separations of 25 mm or greater (circle). (B) Intracranial sensitivity in depth as a function of source-detector separation (excluding scalp and skull). At all separations, sensitivity decreases exponentially with depth (i.e., linear curves through ∼15 mm depth on this semilog plot).</p
Photon propagation through scattering tissue.
<p>(A) Representation of a single photon moving through tissue, from the source, to an arbitrary point inside the medium. Accumulation of photon weights during this process is the basis of a 2-point Green's function. (B) Example 2-point Green's function, with colors representing the intensity of light reaching any given point in the tissue (truncated after a 5 order-of-magnitude reduction in intensity from peak). (C) Representation of a single photon traveling from the source, to a point in the medium, and on to a detector; the basis of a 3-point sensitivity function. (D) Example 3-point sensitivity function generated from two MC simulations (one for the source, one for the detector) spaced 30 mm apart.</p
Fitted exponential decay coefficient, c, from the sensitivity function in Eqn. (6) as a function of SD separation.
<p>The asymptote at ∼40 mm separations means that further increasing the SD separation provides diminishing returns for NIRS sensitivity to brain function.</p
Estimated relative NIRS sensitivity (proportions) as a function of depth for a SD separation of 30 mm.
<p>Estimated relative NIRS sensitivity (proportions) as a function of depth for a SD separation of 30 mm.</p
Mean proportion of total sensitivity to the tissue types indicated as a function of source-detector separation.
<p>Errorbars represent standard errors across all nineteen locations in the International 10–20 System. Separate curves represent pre-thresholding of the sensitivity (3-point Green's function) maps at 5, 4, 3, or 2 orders of magnitude (OM) reduction in sensitivity compared to peak, representing progressively less optimal NIRS measurement systems. (A) Sensitivity to brain tissue = gray plus white matter. (B) Non-brain tissue = CSF plus skull plus scalp. (C) Gray matter only. (D) White matter only.</p
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