The invention relates to the field of mechanical engineering and materials. More specifically, the invention relates to a self-adjusting system of crossing rails having multiple characteristics which extend the useful life of the crossing system by at least a factor of four, while offering a safety support by providing redundancy to the line system. In this way, human passengers can move from place to place easily and safely with a minimum of noise and vibrations. In addition, the proprietor of the system can benefit from lower maintenance costs and less exposure to financial risk. Moreover, the system can be installed at a multitude of diverse natural sites without altering or damaging the environment. Moreover, the same components can be used to produce other configuration options which increase the possibility of creating a system having characteristics enabling same to cover a multitude of inclinations. According to the invention, the various components are combined in order to obtain (i) maximum conservation of energy, said configuration combining a smooth rail (Fig. 1) and the self-balancing system (Fig. 3), or (ii) maximum braking, said configuration combining the skeleton rail (Fig. 2) and the high-braking safety system (Fig. 4).

A protective cover for protection of agricultural products comprises a fibrous nonwoven fabric exhibiting sufficient vapour permeability to permit transmission of gases through the cover while retarding passage of dust and insects. The protective cover is provided in a tubular configuration sized to permit the cover to be positioned generally about associated agricultural products, with the cover being particularly suited for use on products prior to harvest, such as bananas. The cover may be formed from fibrous and/or filamentary elements, and may be formed from fibrous material selected from the group consisting of thermoplastic polymers, thermoset polymers, natural fibers, and combinations thereof. The nonwoven fabric may be formed with protection-enhancing agents such as insecticidal, fungicidal, algaecidal, decay-inhibiting, and UV-protective agents. The nonwoven fabric may be pigmented as desired.

The present invention is directed to a pharmaceutically acceptable taste masking liquid excipient base for administration of a relatively large amount of unpleasant tasting medicines. More particularly, the enhanced sweetness and taste masking effect are produced by the addition of sucralose to the excipient base with maintenance of a pH from about 2 to about 5. The invention is further directed to medicinal compositions comprising such a liquid excipient base and unpleasant tasting medicines. Still further, the invention is directed to a method for taste masking unpleasant tasting medicines through their incorporation into the claimed liquid excipient bases.

Systems and techniques are described for providing lighting. In general, in one implementation, the lighting includes an incandescent and a substantially monochromatic light emitting diode light source. When energized, both of the light sources emit a peak wavelength of light that is visible to human beings. The monochromatic light source can emit a wavelength of light that is not visible to a specified animal species.