摘要:
A method of manufacturing a remediation material uses a biogenic material as a substrate and involves preparing the surface of the substrate to enable a chemical reaction, and performing template-driven surface derivatization on the substrate to provide a net positive charge on the substrate. The remediation material may be placed into contact with surface water, ground water, soil, or sediment by at least one of a permeable reactive barrier, direct well injection, or direct introduction of the remediation material into soil or sediment, to remove contaminants from the surface water, ground water, soil, or sediment.
摘要:
A bit holder comprises a body defining at least one cavity. The cavity includes a first pathway for receiving a bit and a second pathway for holding a bit. The first and second pathways intersect to define an open area between the first pathway and the second pathway such that a bit can be rotated between the first pathway and to a locked position in second pathway. The first pathway is disposed at an angle relative to the second pathway. The bit is retained by an interference fit with the body. The holder may be releasably retained in a case using mating structures on the case and holder. In a method for retaining a bit in a holder, the bit is inserted into the holder along the first pathway. The bit is rotated through the open area to position the bit in the second pathway where it is held.
摘要:
A bit holder comprises a body defining at least one cavity. The cavity includes a first pathway for receiving a bit and a second pathway for holding a bit. The first and second pathways intersect to define an open area between the first pathway and the second pathway such that a bit can be rotated between the first pathway and to a locked position in second pathway. The first pathway is disposed at an angle relative to the second pathway. The bit is retained by an interference fit with the body. The holder may be releasably retained in a case using mating structures on the case and holder. In a method for retaining a bit in a holder, the bit is inserted into the holder along the first pathway. The bit is rotated through the open area to position the bit in the second pathway where it is held.
摘要:
A method providing a self-dispensing additive for buffering a projectile trapping medium and passivating spent projectiles trapped therein. The additive is a buffering compound formed as blocks of low-density foamed-concrete that self-dispenses the additive when contacted by the fired projectiles. The blocks contain dry components that may include one or more of low-solubility phosphate compounds, low-solubility aluminum compounds, iron compounds, sulfate compounds, and calcium carbonate mixed with a cementing material, water, and an aqueous-based foam in substantially stoichiometric amounts. The aqueous-based foam is added in a quantity sufficient to adjust the density of the block to neutral buoyancy in the projectile-trapping medium. The additive chemically stabilizes the medium while also passivating projectiles, in particular heavy-metal projectiles, trapped in the medium.
摘要:
A backstop for decelerating and trapping projectiles generally includes a support structure having an inclined surface and a projectile trapping medium disposed on the inclined surface. The projectile trapping medium may be either a resilient granular ballistic medium or a combination of a ballistic medium with a hydrated super absorbent polymer (SAP) gel. Preferably, the support structure is made of a shock absorbing, foamed, fiber-reinforced concrete, such as SACON®. In embodiments, the support structure also includes an enclosure. Additives may also be mixed into the projectile trapping medium to control alkalinity and prevent leaching of heavy metals.
摘要:
A dryer for a smoking device includes a heating element adapted to fit within a cigarette receiving portion of the smoking device, the heating element projecting from a base portion of the dryer. The base portion of the dryer has an interface surface on which the smoking device rests when the heating element is positioned within the cigarette receiving portion of the smoking device. At least one air passageway is provided in the base portion of the dryer to communicate between the cigarette receiving portion and surrounding ambient air when the smoking device rests on the interface surface.
摘要:
The present invention provides a fluorescent silica-based nanoparticle that allows for precise detection, characterization, monitoring and treatment of a disease such as cancer The nanoparticle has a fluorescent compound positioned within the nanoparticle, and has greater brightness and fluorescent quantum yield than the free fluorescent compound To facilitate efficient urinary excretion of the nanoparticle, it may be coated with an organic polymer, such as polyethylene glycol) (PEG) The small size of the nanoparticle, the silica base and the organic polymer coating minimizes the toxicity of the nanoparticle when administered in vivo The nanoparticle may further be conjugated to a ligand capable of binding to a cellular component associated with the specific cell type, such as a tumor marker A therapeutic agent may be attached to the nanoparticle Radionuclides/radiometals or paramagnetic ions may be conjugated to the nanoparticle to permit the nanoparticle to be detectable by various imaging techniques.
摘要:
A method of manufacturing a remediation material is disclosed. The method includes providing a biogentic material as a substrate, preparing the surface of the substrate for a chemical reaction, and performing template-driven surface derivitization on the surface of the substrate to provide a net positive charge on the surface of the substrate. The remediation material may be placed into contact with surface water, ground water, soil, or sediment by at least one of a permeable reactive barrier, direct well injection, or direct introduction of the remediation material into soil or sediment, to remove contaminants from the surface water, ground water, soil, or sediment.
摘要:
A tobacco mass is heated to a temperature of about 150° to about 220° C. to release flavorful tobacco volatiles, which are entrained in air passing through the tobacco mass, and condensed to form an inhalable aerosol. The tobacco mass may have a rotationally symmetric shape, with at least part of its surface in heat transfer relationship with a heater. The heater may be an external shell, an internal rod, or a plate. A shell can enclose the heater and tobacco mass and define a preheating chamber for inflowing air. A mouthpiece, with or without a filter, may be arranged in fluid communication with the tobacco mass to direct the aerosol from the heating system.
摘要:
A wrench has a socket defined by a plurality of flat faces and a handle. A first threading tool is provided having a shape and dimension to fit into the socket. An adapter that retains a second threading tool includes a connector having the same shape and the dimension as the first threading tool that fits into the socket. A retaining member is rotatably mounted to the body for movement between a first position and a second position for locking the adapter and the die in the socket. The retaining member has a second plurality of flat faces defining an opening where the second plurality of faces are coextensive with the faces of the socket when the retaining member is in the first position and are offset from the faces of the socket when the retaining member is in the second position.