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Portland, OR, United States

A Salinity Gradient Solar Pond (SGSP) has saturated salt water in the bottom zone of the pond and nearly fresh water at the top zone, with a gradient zone between the top and bottom. Due to this salinity stratification the upward diffusion of salt is a natural consequence in SGSPs. Controlling the salinity gradient in SGSP systems is vital to their reliable operation. The method for controlling the salinity gradient disclosed in this application, coined the Pond Rolling Method by the authors, rapidly drains the ponds non-gradient zones, refurbishes the gradient, and restores the non-gradient zones of the SGSP system, in a manner that minimizes land use, water and heat loss. The salt in the pond is allowed to diffuse upward over time and, on condition as needed to restore the gradient, the Pond Rolling Method is used to completely rebuild the gradient and the SGSP zones.


A Salinity Gradient Solar Pond has saturated salt water in the bottom of the pond and nearly fresh water at the top, with a gradient zone between the top and bottom. Due to this salinity stratification the upward diffusion of salt is a natural consequence in SGSPs. This upward diffusion of salt has been found to range 60-80 gr/m


Patent
The Good | Date: 2015-08-17

A torsion bar includes a housing and at least one inner core. The housing has a receiving space, two opposite fixing grooves defined a sidewall of the housing and communicating with the receiving space, and a plurality of strips positioned at outer surface thereof. The inner core is received in the receiving space, and comprises two opposite fixing elements corresponding to the fixing grooves. Each of the fixing elements including a plurality of first protruding portions located at a side end thereof to facilitate that user disengages the inner core from the housing, and a plurality of second protruding portions located at a surface thereof adjacent to the side end to prevent the inner core from disengaging accidently from the housing. A cross-section of the receiving space is similar to a cross-section of the inner core.


Dental devices and systems and methods for making dental devices are described herein. In some embodiments, denture base material may be adapted to fit a model of a patients mouth, and a pre-set arch of denture teeth may be adjusted the model. The pre-set arch may be impressed into the denture base material to create a channel. In some embodiments, the cure may be a partial cure and/or a releasing agent may be used such that the pre-set arch may be removed, if needed for further adjustments, after assessing the fit of the denture device. If the fit is correct, another cure may be performed to finish the denture device. If the fit is incorrect, a new bite registration and/or adjustments to the denture base material and/or pre-set arch of denture teeth may be made.


A monolithic interlocking tile, manufacturing method, and covering are disclosed. A closed-cell foam material is injected into a mold to form a monolithic structure having a first surface, a second surface offset and opposite the first surface, the first surface including a first lip located at two adjacent sides of the structure with a plurality of shaped protrusions, and the second surface including a second lip located at two other adjacent sides of the structure and forming a plurality of shaped apertures matching in number and shape with the plurality of protrusions; and a recess formed in the second lip and forming a hole for receiving a fastener to secure the monolithic structure to a supporting structure. Multiple monolithic interlocking tiles are interlocked together to form the covering for a floor, wall, ceiling, or roof.

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