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Systems and methods for providing an LGD with a collimated backlight and a non-Lambertian diffuser are described. An LCD system includes: an illumination source for producing light; a collimating waveguide optically connected to the illumination source, the collimating waveguide including a top surface, an incident end and a plurality of substantially parallel optical elements for redirecting light from the incident end to, and through, the top surface by total internal reflection (TR), each of the plurality of substantially parallel optical elements including a first facet that is nonparallel to the top surface and a mirrored second facet that is nonparallel to the top surface; a reflector optically connected to the light source and optically connected to the collimating waveguide, the reflector (1) at least partially surrounding the illumination source, and (2) reflecting light from said illumination source to said incident end by direct reflection; a liquid crystal display optically connected to the collimating waveguide; and a non-Lambertian diffuser optically connected to the liquid crystal display for directing light from said liquid crystal display. The light from the reflector is directly incident upon the incident end. The systems and methods provide advantages in that the light from the LCD is bright and homogenous.

In certain aspects, the present invention provides compositions and methods for promoting bone growth and increasing bone density.

Systems and methods for providing an LCD backlight are described. An LCD backlight system includes: a beam bending and viewing film including a first side including a surface diffuser and a second side including a plurality of substantially parallel optical elements, each of the plurality of substantially parallel optical elements including a first facet that includes a refractive surface and a second facet that includes a total internal reflection surface. The systems and methods provide advantages in that light from the LCD backlight is bright and homogenous.

In certain aspects, the present invention provides compositions and methods for increasing red blood cell and / or hemoglobin levels in vertebrates, including rodents and primates, and particularly in humans.

In certain aspects, the present invention provides compositions and methods for decreasing FSH levels in a patient. The patient may, for example, be diagnosed with an FSH-related disorder or desire to delay or inhibit germ cell maturation.

In certain aspects, the present invention provides compositions and methods for increasing red blood cell and / or hemoglobin levels in vertebrates, including rodents and primates, and particularly in humans.

In certain aspects, the present invention provides methods for dosing a patient with an ActRIIb antagonist and methods for managing patients treated with an ActRIIb anatagonist. In certain aspects, the methods involve measuring one or more hematologic parameters in a patient.

A method for the treatment of fly ash to remove carbon and other matter. The resulting treated fly ash has a fine particle size and low carbon content and is useful in cementitious compositions. Other useful by-products, such as commerial grade cenopheres, can also be recovered.