摘要:
A controlled release dosage form for sertraline has a core comprising a sertraline-containing composition and a water-swellable composition wherein the water-swellable composition is in a separate region within the core. A coating around the core is water-permeable, water-insoluble, and has at least one delivery port therethrough. In one embodiment, the dosage form releases sertraline to the use environment at an average rate of 6 to 10 wt % per hour from the second to the twenth hour after introduction to a use environment and less than about 25 wt % for the first two hours and at least 70 wt % by the twelfth hour, where the percentages correspond to the mass of drug released from the tablet divided by the total mass of drug originally present in the tablet. In another embodiment, the dosage form releases less than about 25 wt % of sertraline to the use environment by the second hour after introduction of the dosage form to the use environment, and delivers at least 25 wt % from the eighth to the twenty-fourth hour.
摘要:
Certain squaric acid derivatives are useful for the thermochemical generation of acid. The squaric acid derivatives may be used in imaging media in conjunction with acid-sensitive materials which undergo a color change when contacted by the acid generated from the squaric acid derivatives. Preferably, the acid-sensitive materials undergo an irreversible color change, so that the image can be fixed by neutralizing all the acid generated with excess base, thereby preventing further color change in the image during long term storage.
摘要:
An image-receiving element for use in photographic and photothermographic diffusion transfer film units of the type wherein the image-receiving element is designed to be removed or "peeled-apart" from a photosensitive element following exposure and processing. The present image-receiving element comprises in sequence, a support, an image-receiving layer, and an overcoat layer. The overcoat layer comprises a major amount by dry weight of water-insoluble particles and a minor amount by dry weight of a water-insoluble polymeric latex binder material. The water-insoluble particles may comprise inorganic particles such as colloidal silica, and/or organic particles such as water-insoluble polymeric latex particles.
摘要:
There is described a multicolor diffusion transfer film unit having a plurality of different color image components, each of which includes a color-sensitive silver halide emulsion in association with a corresponding image dye-providing material and a first silver halide developer which takes part in photographic development to provide an imagewise pattern of diffusible image dye-forming material as a function of photoexposure. At least one of said color image components includes a second silver halide developer, or a precursor thereof, which is capable of developing silver halide indiscriminately and which is made available after photographic development in the color image component in which it is located is substantially completed.
摘要:
Certain squaric acid derivatives are useful for the thermochemical generation of acid. The squaric acid derivatives may be used in imaging media in conjunction with acid-sensitive materials which undergo a color change when contacted by the acid generated from the squaric acid derivatives. Preferably, the acid-sensitive materials undergo an irreversible color change, so that the image can be fixed by neutralizing all the acid generated with excess base, thereby preventing further color change in the image during long term storage.
摘要:
An image-receiving element for use in photographic diffusion transfer film units of the type Wherein the image-receiving element, which includes an image-receiving layer, is designed to be removed, or "peeled-apart", from a photosensitive element after exposure and development have been carried out. The image-receiving element includes an overcoat layer which overlies the image-receiving layer for reducing the time period for which the image-receiving element remains tacky after the element has been separated from the photosensitive element and for improving the handling and/or storage of the resulting photograph under high humidity conditions. The overcoat layer comprises colloidal silica particles and binder material.
摘要:
Certain squaric acid derivatives are useful for the thermochemical generation of acid. The squaric acid derivatives may be used in imaging media in conjunction with acid-sensitive materials which undergo a color change when contacted by the acid generated from the squaric acid derivatives. Preferably, the acid-sensitive materials undergo an irreversible color change, so that the image can be fixed by neutralizing all the acid generated with excess base, thereby preventing further color change in the image during long term storage.
摘要:
An imaging medium comprises a layer, depolymerizable by exposure to actinic radiation and undergoing a reduction in cohesivity upon at least partial depolymerization, disposed adjacent a layer of an imaging material, which has a cohesive strength greater than the cohesive strength of the depolymerizable layer after depolymerization. This medium is imagewise exposed to radiation, thereby causing at least partial depolymerization of the polymer in the exposed areas, so rendering these exposed areas lower in cohesivity than the unexposed areas. The exposed areas of the imaging material are then removed from the depolymerizable layer.
摘要:
The present invention is directed to controlled-release (CR) oral pharmaceutical dosage forms of 5,8,14-triazatetracyclo[10.3.1.02,11.04,9]-hexadeca-2(11),3,5,7,9-pentaene, 1, and pharmaceutically acceptable salts thereof, and methods of using them to reduce nicotine addiction or aiding in the cessation or lessening of tobacco use while reducing nausea as an adverse effect. The present invention also relates to an immediate-release (IR) low dosage composition having a stable formulation with uniform drug distribution and potency.
摘要:
Pharmaceutical kits are provided that reduce or prevent oxidative degradation of oxygen-sensitive pharmaceutically active ingredients in solid unit dosage forms that are supplied in oxygen permeable containers. Stabilization of the active ingredient is accomplished by incorporating an oxygen absorber into a sealed oxygen permeable container.