1. A method of determining that radiation is incident upon a radiation sensitive sensor comprising a scintillator that converts x-ray radiation to visible light radiation and a plurality of pixels sensitive to the visible light radiation, said method comprising the steps of
monitoring an amount of current drawn by the plurality of pixels;
generating a signal indicating a presence of incident radiation when the visible light radiation causes the amount of current drawn by the plurality of pixels to exceed a predetermined amount.
2. The method according to claim 1, wherein the amount of current drawn by the plurality of pixels is measured using a resistor.
3. The method according to claim 2, wherein the signal indicating the presence of incident radiation is generated by a comparator.
4. The method according to claim 3, wherein the comparator compares a voltage proportional to the amount of current drawn by the plurality of pixels with a fixed reference voltage.
5. The method according to claim 4, wherein the comparator generates a signal indicating the presence of incident radiation when the voltage proportional to the amount of current drawn by the plurality of pixels exceeds the fixed reference voltage.
6. The method according to claim 1, wherein said sensor is an intraoral sensor adapted to capture x-ray images inside of a patient’s mouth.
7. The method according to claim 1, wherein said plurality of pixels comprises a CMOS active pixel sensor array.
8. A radiation sensitive sensor, comprising
a scintillator that converts x-ray radiation to visible light radiation;
a plurality of pixels sensitive to the visible light radiation;
an event detection circuit that determines that radiation is incident upon said sensor when the visible light radiation causes an amount of electrical current drawn by said plurality of pixels to exceed a predetermined amount.
9. A sensor according to claim 8, wherein said event detection circuit includes:
a resistor that senses an amount of current drawn by said plurality of pixels;
a voltage divider that generates a reference voltage; and
a comparator that generates a triggering signal when the voltage across said resistor exceeds the reference voltage.
10. A sensor according to claim 8, wherein said sensor is an intraoral sensor adapted to capture x-ray images inside of a patient’s mouth.
11. A sensor according to claim 8, wherein said plurality of pixels comprises a CMOS active pixel sensor array.
12. A radiation sensitive sensor comprising:
means for converting x-ray radiation to visible light radiation;
means for generating an amount of electrical charge corresponding to an intensity of radiation incident on said sensor;
means for determining that radiation is incident on said generating means when the visible light radiation causes an amount of electrical current drawn by said charge generating means to exceed a predetermined amount.
13. A radiation sensor according to claim 12, wherein said determining means includes:
means for generating a reference voltage; and
means for generating a voltage proportional to the amount of electrical current drawn by said charge generating means.
14. A radiation sensor according to claim 12, wherein said determining means includes:
means for determining that radiation is incident on said charge generating means when the voltage proportional to the amount of current drawn by said charge generating means exceeds the reference voltage.
15. A radiation sensor according to claim 12, wherein said sensor is an intraoral sensor adapted to capture x-ray images inside of a patient’s mouth.
16. A radiation sensor according to claim 12, wherein said charge generating means comprises a CMOS active pixel sensor array.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A method of inhibiting an ethylene response in plants or plant parts comprising the step of contacting said plants or plant parts with at least one composition comprising at least one double bond adducted cyclopropene compound,
wherein said double bond adducted cyclopropene compound has the formula of
wherein:
a) each R1, R2, R3 and R4 is independently selected from the group consisting of H and a chemical group of the formula:
-(L)n-Z
wherein:
i) n is an integer from 1 to 12;
ii) each L is independently selected from the group consisting of D1, D2, E, and J, wherein:
D1 is of the formula:
D2 is of the formula:
E is of the formula:
J is of the formula:
wherein:
\u2003A) each X and Y is independently a chemical group of the formula:
-(L)m-Z;
\u2003and
\u2003B) m is an integer from 0 to 8; and
\u2003C) no more than two D2 or E groups are adjacent to each other and no J groups are adjacent to each other;
iii) each Z is independently selected from the group consisting of hydrogen, halo, cyano, nitro, nitroso, azido, chlorate, bromate, iodate, isocyanato, isocyanido, isothiocyanato, pentafluorothio, and a chemical group G, wherein G is a 4 to 14 membered ring system; and
iv) the total number of heteroatoms in -(L)n-Z is from 0 to 6; and
b) the total number of non-hydrogen atoms in said compound is 50 or less, with the proviso that each said double bond adducted cyclopropene compound that has said structure 3 has R2 that is hydrogen.
2. The method of claim 1, wherein said compound inhibits an ethylene response in at least one of said plants or plant parts.
3. The method of claim 2, wherein said ethylene response is one or more response selected from the group consisting of: ripening or senescence of flowers, fruits, or vegetables; abscission of foliage, flowers, or fruit; shortening of life of ornamental plants, cut flowers, shrubbery, seeds, or dormant seedlings; inhibition of growth; stimulation of growth; auxin activity; inhibition of terminal growth; control of apical dominance; increase in branching; increase in tillering; changing the morphology of plants; modifying the susceptibility to plant pathogens; changing bio-chemical compositions; abortion or inhibition of flowering or seed development; lodging effects; stimulation of seed germination; breaking of dormancy; hormone effects; and epinasty effects.
4. The method of claim 1, wherein said double bond adducted cyclopropene compound comprises one or more compound having said structure 1.
5. The method of claim 1, wherein said double bond adducted cyclopropene compound comprises one or more compound having said structure 2.
6. The method of claim 1, wherein said double bond adducted cyclopropene compound comprises one or more compound having said structure 3.
7. The method of claim 1, wherein every said R2 is a hydrogen.
8. The method of claim 1, wherein said plants or plant parts comprise harvested fruits and vegetables.
9. The method of claim 1, wherein said double bond adducted cyclopropene compound is encapsulated in a molecular encapsulating agent.
10. The method of claim 1, wherein said treating is performed by contacting said double bond adducted cyclopropene compound in gaseous form to said plants or plant parts.