Abstract: The present disclosure relates to an apparatus and methods for measuring, monitoring, and/or controlling the chemical concentration of one or more active ingredients in a solution for treating plants and plant crops, such as fruits and vegetables.

Abstract: A cover for an electronic device comprises a back sheet portion comprising a first section and a second section and a front sheet portion comprising a first section and a second section. The second end of the front sheet portion is connected to the second section of the back sheet portion, and the first end of the front sheet portion is connected to the first section of the back sheet portion at a distance of the first end of the back sheet portion, the cover having an end section. The cover is foldable between a cover position and a support position. In the cover position, the back sheet portion and the front sheet portion are substantially planar and resting against each other. In the support position, at least a part of the end section rests against at least a part of the first section of the front sheet portion.

Abstract: A cover for an electronic device comprises a back sheet portion comprising a first section and a second section and a front sheet portion comprising a first section and a second section. The second end of the front sheet portion is connected to the second section of the back sheet portion, and the first end of the front sheet portion is connected to the first section of the back sheet portion at a distance of the first end of the back sheet portion, the cover having an end section. The cover is foldable between a cover position and a support position. In the cover position, the back sheet portion and the front sheet portion are substantially planar and resting against each other. In the support position, at least a part of the end section rests against at least a part of the first section of the front sheet portion.

Abstract: Azaanthracene-triones of the formula: ##STR1## (in which: R.sup.1, R.sup.2, R.sup.4 and R.sup.5 are the same or are different and each is a hydrogen atom or a lower alkyl group;R.sup.3 is a hydrogen atom, a lower alkyl group, a phenyl group or an amino-substituted phenyl group; andX is a --CH--, .dbd.N-- or --NH--, whereby the ring containing the group X is a benzene, pyridine or dihydropyridene ring)have antitumoral activity.

Abstract: One or more rigid sealing segments are attached to pipe end sections and the assembly lined to form a fluid-resistant joint. A segment surface forms the primary sealing interface of lined pipe sections without the need for a conventional removable liner edge seal. The lining process and configuration sealably bonds the liner to the fluid-resistant sealing segment and to the non-fluid-resistant pipe. The manner of bonding both avoids (or limits) liner stress and covers the non-fluid-resistant material of the pipe. In an alternative embodiment, the sealing segments are engaged at mating threaded surfaces, the mated threads providing a single primary sealing and engagement interface. Redundant liner end sealing may also be accomplished by a sandwiched deformable material if added reliability of sealing harsh fluids is desired. In another embodiment, portions of the rigid sealing segments are slidably mounted relative to each other and the primary seal interface is temperature actuated.

Abstract: One or more rigid sealing segments are attached to pipe end sections and the assembly lined to form a fluid-resistant joint. A segment surface forms the primary sealing interface of lined pipe sections without the need for a conventional removable liner edge seal. The lining process and configuration sealably bonds the liner to the fluid-resistant sealing segment and to the non-fluid-resistant pipe. The manner of bonding both avoids (or limits) liner stress and covers the non-fluid-resistant material of the pipe. In an alternative embodiment, the sealing segments are engaged at mating threaded surfaces, the mated threads providing a single primary sealing and engagement interface. Redundant liner end sealing may also be accomplished by a sandwiched deformable material if added reliability of sealing harsh fluids is desired. In another embodiment, portions of the rigid sealing segments are slidably mounted relative to each other and the primary seal interface is temperature actuated.

Abstract: One or more rigid sealing segments are attached to pipe end sections and the assembly lined to form a fluid-resistant joint. A segment surface forms the primary sealing interface of lined pipe sections without the need for a conventional removable liner edge seal. The lining process and configuration sealably bonds the liner to the fluid-resistant sealing segment and to the non-fluid-resistant pipe. The manner of bonding both avoids (or limits) liner stress and covers the non-fluid-resistant material of the pipe. In an alternative embodiment, the sealing segments are engaged at mating threaded surfaces, the mated threads providing a single primary sealing and engagement interface. Redundant liner end sealing may also be accomplished by a sandwiched deformable material if added reliability of sealing harsh fluids is desired. In another embodiment, portions of the rigid sealing segments are slidably mounted relative to each other and the primary seal interface is temperature actuated.

Abstract: A process for regenerating media filters used to filter geothermal brine, especially flashed and clarified, silica-rich brine, comprises flowing steam through the filter in a backflush direction at a rate and for a time duration agitating the filter media and filtered-out material. The process includes, preferably after the steam flow is stopped, flowing brine, for example, filtered brine, through the filter in the backwash direction to flush out the material loosened and broken up by the steam scour and restratify the media bed components, and may include partially draining the filters prior to the steam scour. Preferably, the steam used for the steam scour is low pressure steam obtained from low pressure flashing of the brine being filtered. Steam flow rates are preferably between about 2 and about 10 SCFM per square foot of filter cross-sectional area in the region of the filter media; steam flow rate is preferably about 5 minutes after any steam quenching has ceased.