Abstract: A method of identifying NPK-deficiency includes measuring intensities of light reflected from a cannabis plant to produce intensities at a set of spectral bands, wherein the cannabis plant is one variety of a plurality of varieties of cannabis. The intensities are applied to a classifier so that the classifier provides one of an indication that the cannabis plant is NPK-deficient or an indication that the cannabis plant is NPK-sufficient, wherein the classifier has been trained using plants that include each of the plurality of varieties of cannabis.

Abstract: A system having a rail configured to be supported by a structure such that the rail is fixed to a position along one side of a bed of plants and a moveable sensor platform, configured to be supported exclusively by the rail and to move along the rail wherein the sensor platform comprises at least one sensor.

Abstract: A sensing system includes at least one sensor and a movement subsystem configured to move the at least one sensor between a plant and a light source.

Abstract: A sensing system includes at least one sensor and a movement subsystem configured to move the at least one sensor between a plant and a light source.

Abstract: A Darrieus-type vertical axis wind turbine is disclosed. The turbine includes an erection hinge between the support structure and support structure anchor which permits assembly of the rotor shaft and blades and gear box and electric generator very close to ground level. Using the three rotor shaft upper bearing guy cables to hold and pivot erect all non-anchor turbine components from a horizontal to a vertical operating position around the support anchor hinge. Support structure adjustable leveling and support bolts used to minimize erection hinge stress during turbine operation. Erection hinge offset beams to minimize crushing scissors action between the support structure and support structure anchor during pivot erection. Horizontal assembly and ground winch erection pivoting replaces the need for an expensive tall crane, with a rolling gantry and chain gear hoist.

Abstract: A Darrieus-type vertical axis wind turbine is disclosed which includes a vertically extending hollow rotor shaft mounted on a support structure with two, three, or four rotor blades of troposkein configuration on the rotor shaft for rotating the shaft in response to wind energy and thereby drive a generator to produce electrical power. The turbine includes an erection hinge and gin pole which permits the turbine to be cable hoisted using a simple winch mounted at or near ground level. The erection hinge and pole also permits the turbine to be completely assembled near ground level. The turbine includes two sets of guy cables. The upper set holds the upper bearing assembly and the upper rotor shaft portion in a fixed vertical position. The lower cable set holds the lower rotor shaft portion and the support structure also in a fixed vertical position. A flexible coupling is used to connect the low speed shaft of the generator speed reducer to the rotor shaft.

Abstract: Apparatus for folding, sealing and aligning seriatim a supply of documents into envelopes, each of the documents containing a water-activated adhesive on a portion thereof. The apparatus includes: a hopper for storing a supply of the documents; a device for applying moisture to a portion of the documents; a pair of folding rollers for imparting a fold to the documents; a buckle chute for stopping the forward progress of the documents and causing the documents to enter the nip of the folding rollers; a pair of ironing rollers located downstream of the folding rollers for maximizing adhesive contact of the documents and forming the envelopes; a conveying device located downstream of the ironing rollers for holding the envelopes together during transport prior to their release for further processing; and a downwardly billowing, flexible membrane situated above the conveying device.

Abstract: A nursing bottle holder allows an infant to rest on his side while nursing from a bottle. The bottle holder includes an inclined front wall. The front wall is supported at an inclination relative to the level surface to support the infant on his side. A flexible stem with a bottle retainer on its end allows a bottle to be positioned for holding the bottle while the infant drinks. The front wall is part of a compartment used to hold infant accessories.