This specification discloses a molten steel level determining device in which the electrode senses the interface between the molten steel and the slag on the molten steel at a predetermined level within the deeming ladle whereby the amount of steel remaining in the ladle may be more accurately determined than by prior art methods. With the aid of this information, the standard pourdown practice is modified to ensure that unrollable ingot butts are not poured. The level indicator may also be used...

An apparatus for measuring liquid level in a container, the apparatus having a flexible measurement scale attached at one end to a weight for retainment at the bottom of the container and at the opposite end to a receiver at the top of the container. A float moves along the flexible scale, and has a configuration and density designed to place a portion of the float below the level of the liquid to be measured and a portion above the liquid level. The portion above the liquid level contains trans...

A stand off for masonry or carpentry levels is disclosed which includes a substantially U-shaped portion having a clear-drilled boring through which a spring-tensioned cylindrical body extends having fastened at one end a disc-shaped end section enclosed within the U-shaped portion and at its opposite end, a disc-shaped pad for touching engagement with objects whose level is to be measured.

Methods for obtaining beneficial stable levels of circulating histamine are disclosed for use in methods for enhancing natural killer cell cytotoxicity. In such methods, a beneficial level of circulating histamine is attained and an agent whose ability to enhance natural killer cell cytotoxicity is augmented by histamine is administered. Alternatively, stable beneficial levels of circulating histamine can be attained in subjects receiving chemotherapy or antiviral treatment. The invention may al...

A method of stabilizing the initial friction level of a brake friction material. The method comprises coating the friction material with a coating which is insoluble in water and which comprises a binder selected from alkali metal silicates and metal alkoxides. The coating may also comprise particulate friction-enhancing material.

An extension set for a spirit level having an elongated leveling face for setting on a surface and defining a nominal working length, an opposite face to the leveling face, a pair of opposite major side surfaces, and a pair of opposite end sections, the extension set including a pair of discrete elongated U-shaped profile spirit level extenders for lengthwise accommodating an end section of the spirit level with its leveling face facing towards the surface and its opposite face facing away there...

A rack for displaying a number of magnetic measuring/gauging devices held in a releasable manner. The rack has a rigid, vertically planar, magnetically-attractable holder, a rigid, horizontal tray secured to the lower edge of the holder and configured to engage one of the ends of each device, and an attachment member secured to the rear edge of the holder for mounting the rack to a display structure. Preferably, the measuring/gauging devices are torpedo levels. A label-plate can be attached to t...

The present invention relates to a method of obtaining altered plasmid contents in bacteria, bearing mutation in at least one of the chromosomal genes, nusG, rho, and dnaC, and the bacterial strains thereof, having the mutated chromosomal genes, individually or in various possible combinations, capable of altering the level of plasmids.

A liquid level sensor comprises a plurality of electrodes arranged in a defined relationship with respect to a container filling trajectory, a signal generator coupled to one or more of the plurality of electrodes, a signal receiver coupled to one or more of the plurality of electrodes, and a sensing circuit coupled to at least one of the signal generator and signal receiver. The sensing circuit is configured to produce an output indicative of electrical resistance between at least one pair of t...

According to the invention, a single device permits the relative soil rigidity values of a section of soil to be determined in a rapid measuring method and in addition, absolute soil rigidity values to be determined in a slightly slower method. If the device is calibrated with the aid of the measured absolute values, a rapid absolute measurement can also take place. The device can also be used for soil compaction.