Abstract: A white, partially translucent, metallized film article which having a flexible, heat resistant, polymeric film material with opposite sides. The film material has deposited on a first side a metal coating which is spectrally reflective and partially light transmissive in the visible region of the spectrum, is capable of transmitting from about 1% to about 70% of incident visible light cast thereon; the second side having a white outermost surface, and has a visible light opacity of from about 0.5 to about 0.98.

Abstract: A white, partially translucent, metallized film article which having a flexible, heat resistant, polymeric film material with opposite sides. The film material has deposited on a first side a metal coating which is spectrally reflective and partially light transmissive in the visible region of the spectrum, is capable of transmitting from about 1% to about 70% of incident visible light cast thereon; the second side having a white outermost surface, and has a visible light opacity of from about 0.5 to about 0.98.

Abstract: An otherwise conventional Jamar dynamometer is provided with a force transducer. The analog output of the force transducer is sampled at regular intervals and converted to a sequence of digital values by a conventional analog-to-digital converter. The digital output of the converter is processed by a conventional computer in real time to produce an output that clearly indicates the maximum force exerted by the subject and whether or not the subject was sincerely attempting to exert a maximum force while the test was in process. Preferably the output comprises both a graphic display of the forces exerted by the subject over a predetermined interval of time and a statistical analysis of those forces. The output data includes calculated discriminator variables which indicate with a high statistical accuracy whether the subject was sincerely exerting a maximal force on the dynamometer when instructed to do so. In an exemplary embodiment, the computer is a MS.TM.

Abstract: A compound having the property of selectively binding sodium ions in the presence of potassium ions and having the formula: ##STR1## where X is ##STR2## and where any aromatic ring may be substituted and/or may form part of a fused aromatic ring system.At least one of the aromatic rings may be substituted by a spectroscopic reporter group, a group which permits the compound to enter and remain in a cell and/or an electron donating or withdrawing group.A method of determining cytoplasmic sodium concentration by using this compound as a probe is also described.

Abstract: A boom arm safety lock including a pivotally-mounted boom arm and a fluid cylinder assembly for pivoting the arm up and down. A lock bar is pivotally mounted adjacent the boom arm for upwardly supporting the boom arm in the event the fluid in the cylinder assembly is exhausted, and the boom arm will therefore remain in the raised position.

Abstract: An improved apparatus for processing sheared trees is provided, as well as the harvesting apparatus for uses therein. The harvester is of the type having a gripping means disposed adjacent the forward end of the apparatus and a shear and delimber longitudinally movable relative to the boom. The shear and delimber are initially positioned adjacent each other and during the first rearward delimbing stroke, the delimber moves rearward relative to the shear. At the end of the delimbing stroke, the shear is activated to sever a first bolt, then a greater pressure is applied to the delimber blades so that they are able to grip the remaining trunk for the return stroke, during which the delimber moves forward relative to the shear. Thus, at the end of the return stroke the delimber and shear have returned to their initial positions and the delimbed portion of the remaining trunk extends a sufficient distance forwardly of the shear to be clamped by the gripping means.