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Lumonics Inc frequency-doubled ruby laser
Frequency Doubled Ruby Laser, supplied by Lumonics Inc, used in various techniques. Bioz Stars score: 90/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
https://www.bioz.com/product/frequency-doubled+ruby+laser/frequency+doubled+ruby+laser+model+qsr2/pmc01665608-88-8-12
Average 90 stars, based on 1 article reviews
frequency-doubled ruby laser - by Bioz Stars, 2026-11
90/100 stars

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Article Title: Stretch of Contracting Cardiac Muscle Abruptly Decreases the Rate of Phosphate Release at High and Low Calcium
Article Snippet: A pulse from a 347-nm frequency-doubled ruby laser (30-ns light pulses, 80–120 mJ; QSR 2, Lumonics, Rugby, UK) was focused on the muscle to an ellipse, ∼0.5 × 3 mm at the trabecula.

Article Title: Regulation of contraction kinetics in skinned skeletal muscle fibers by calcium and troponin C.
Article Snippet: The influences of [Ca] and Ca dissociation rate from troponin C (TnC) on the kinetics of contraction (kCa) activated by photolysis of a caged Ca compound in skinned fast-twitch psoas and slow-twitch soleus fibers from rabbits were investigated at 15 C. Increasing the amount of Ca released increased the amount of force in psoas and soleus fibers and increased kCa in a curvilinear manner in psoas fibers 5-fold but did not alter kCa in soleus fibers.. Reconstituting psoas fibers with mutants of TnC that in solution exhibited increased Ca affinity and 2to 5-fold decreased Ca dissociation rate (M82Q TnC) or decreased Ca affinity and 2-fold increased Ca dissociation rate (NHdel TnC) did not affect maximal kCa.. Thus the influence of [Ca ] on kCa is fiber type dependent and the maximum kCa in psoas fibers is dominated by kinetics of cross-bridge cycling over kinetics of Ca 2+ exchange with TnC.

Article Title: The ATP hydrolysis and phosphate release steps control the time course of force development in rabbit skeletal muscle
Article Snippet: The 8 mm diameter beam from a frequency-doubled ruby laser (347 nm: Lumonics QSR2/6) was focused down with a cylindrical lens (UL2: focal length 200 mm) in the vertical direction to a height of about 1 mm at the fibre and masked off in the horizontal direction so that the fibre plus about 200 μm of the aluminium T-clip holding each end of the fibre was illuminated.

Article Title: Laser photolysis of caged compounds at 405 nm: photochemical advantages, localisation, phototoxicity and methods for calibration.
Article Snippet: Rapid, localised photolytic release of neurotransmitters from caged precursors at synaptic regions in the extracellular space is greatly hampered at irradiation wavelengths in the near-UV, close to the wavelength of maximum absorption of the caged precursor, because of inner-filtering by strong absorption of light in the cage solution between the objective and cell.. For this reason two-photon excitation is commonly used for photolysis, particularly at multiple points distributed over large fields; or, with near-UV, if combined with local perfusion of the cage.. These methods each have problems: the small cross-sections of common cages with two-photon excitation require high cage concentrations and light intensities near the phototoxic limit, while local perfusion gives non-uniform cage concentrations over the field of view.

Article Title: Stretch of Contracting Cardiac Muscle Abruptly Decreases the Rate of Phosphate Release at High and Low Calcium
Article Snippet: A pulse from a 347-nm frequency-doubled ruby laser (30-ns light pulses, 80–120 mJ; QSR 2, Lumonics, Rugby, UK) was focused on themuscle to an ellipse, 0.5 3mm at the trabecula.

Article Title: Laser flash photolysis of diazo-2, a caged calcium chelator: The relationship between the extent and rate of smooth muscle relaxation
Article Snippet: Laser flash photolysis of diazo-2, a caged calcium chelator: The relationship between the extent and rate of smooth muscle relaxation R. Pelc, N. Ishii, and C. C. Ashley Citation: Journal of Laser Applications 21, 32 (2009); doi: 10.2351/1.3071377 View online: http://dx.doi.org/10.2351/1.3071377 View Table of Contents: http://scitation.aip.org/content/lia/journal/jla/21/1?ver=pdfcov Published by the Laser Institute of America Articles you may be interested in Effect of loading rates on cellular force measurements by polymer micropillar based transducers Appl.. Phys.. Lett.



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