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Hypocotyl growth in Cucumis sativus L. cv Ridge Greenline is inhibited by increasing blue light (B) fluence rate in a near log linear fashion once a low fluence threshold is exceeded. Deviation from log linearity at the highest fluence rate used here is due to light perceived by the cotyledons and this effect is assigned to phytochrome. This response can be(More)
The action of prolonged far-red on seed germination was studied in Lactuca sativa L. var. Grand Rapids. Exposure of imbibed seeds to 6 hours far-red before the application of gibberellic acid (GA(3)) and thiourea completely prevented germination. Using GA(3), this far-red was effective after the sixth hour of imbibition. At 6, 12, and 18 hours of imbibition(More)
A comparison is made of the quantitative detection of a labeled antibody by surface-enhanced resonance Raman scattering (SERRS) and by fluorescence using the same instrument with the same laser excitation source. The area under the curve for the fluorescence band is greater than for any single peak in the SERRS spectrum, but the broad fluorescence band is(More)
BACKGROUND Cannabis has an adverse effect on the ability to drive safely, therefore a rapid disposable test for Δ(9)-tetrahydrocannabinol (Δ(9)-THC), the psychoactive component of cannabis, is highly desirable for roadside testing. RESULTS A screen printed carbon electrode is used for the N-(4-amino-3-methoxyphenyl)-methanesulfonamide mediated detection(More)
The effects of the calculated photostationary state of phytochrome (phi(c)) and the photon fluence rate on the elongation growth of the hypocotyl of light-grown seedlings of Cucumis sativus L. are examined. Two threshold responses to phi(c) are found at values of 0.06 and 0.43. At phi(c) = 0.06, there is no response at any fluence rate. In the phi(c) range(More)
BACKGROUND Methamphetamine has an adverse effect on the ability to drive safely. Police need to quickly screen potentially impaired drivers therefore a rapid disposable test for methamphetamine is highly desirable. This is the first proof-of-concept report of a disposable electrochemical test for methamphetamine in undiluted saliva. RESULTS A screen(More)
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