Abstract: This invention relates to substituted cyclic carbonyls and derivatives thereof useful as retroviral protease inhibitors, to pharmaceutical compositions comprising such compounds, and to methods of using these compounds for treating viral infection. A representative compound of the invention is the compound of formula: ##STR1## wherein R.sup.22 and R.sup.23 are allyl.

Abstract: There are provided novel 1,4 Diamine 2,3 Dihydroxybutanes useful as antiviral agents, pharmaceutical compositions containing them and processes for preparing such compounds.

Abstract: There are provided novel 1,4 Diamine 2,3 Dihydroxybutanes useful as antiviral agents, pharmaceutical compositions containing them and processes for preparing such compounds.

Abstract: Solutions containing pesticide wastes from greenhouses, for example, are decontaminated in a system including a soil bed reactor. Waste water from the greenhouse goes to a sample tank from which samples are withdrawn for assay of toxicity. Water from the sample tank goes to a holding tank, or to a downstream subsystem if toxicity level is low. Water in the holding tank is aerated to promote degradation of toxic materials. Water from the holding tank is applied near the upper surface of a layer of soil in the soil bed reactor. Air from the sample tank and holding tank, and intermittently, air containing pesticides from the greenhouse, is also passed through the layer of soil in the soil bed reactor. Microbial action in the soil degrades toxic materials in both the gaseous and liquid streams. Water from the soil bed reactor may then be discharged to a pond populated by plant and animal species which promote further degradation of any remaining toxic materials before the water is discharged from the system.

Abstract: Solutions containing pesticide wastes from greenhouses, for example, are decontaminated in a system including a soil bed reactor. Waste water from the greenhouse goes to a sample tank from which samples are withdrawn for assay of toxicity. Water from the sample tank goes to a holding tank, or to a downstream subsystem if toxicity level is low. Water in the holding tank is aerated to promote degradation of toxic materials. Water from the holding tank is applied near the upper surface of a layer of soil in the soil bed reactor. Air from the sample tank and holding tank, and intermittently, air containing pesticides from the greenhouse, is also passed through the layer of soil in the soil bed reactor. Microbial action in the soil degrades toxic materials in both the gaseous and liquid streams. Water from the soil bed reactor may then be discharged to a pond populated by plant and animal species which promote further degradation of any remaining toxic materials before the water is discharged from the system.

Abstract: The invention is directed to a system which constitutes a see-through portion of an enclosure, such as a wall or window portion of a building, and is operative to collect heat from solar radiation and transfer it to a utilization location. In accordance with the invention there is provided a light-transmissive exterior wall member and a light-transmissive interior wall member spaced from the exterior wall member and substantially parallel thereto. At least one heat-absorbing member is mounted in the space between the exterior and interior wall members. Fluid means, preferably air, occupies the remaining space between the inner and outer wall members, the fluid means being operative to receive heat energy from the heat absorbing member. Means are provided for recirculating the fluid between the utilization location and the space between the inner and outer wall members.

Abstract: Shrimp hatched and brought through larval and post-larval stages are introduced into and held for growth to adulthood in a controlled-environment unit which includes plastic cover means positioned over an elongated waterway containing seawater, or the like, and algae in substantial amounts. The design of the unit and the technique of intermittently supplying seawater allows the control of light intensity and light spectral characteristics within the shrimp growing area and the control of seawater flow rate, temperature and dissolved oxygen content of the seawater in the waterway.

Abstract: This invention relates to substituted cyclic carbonyls and derivatives thereof useful as retroviral protease inhibitors, to pharmaceutical compositions comprising such compounds, and to methods of using these compounds for treating viral infection. A representative compound of the invention is the compound of formula: wherein R22 and R23 are allyl.