摘要:
Disclosed are methods of positioning a magnetic drug carrier particle within the body of a subject comprising placing an article within the body of the subject or external to the body of a subject; inserting a magnetic drug carrier particle into the body of the subject, and applying an external magnetic field to the article, thereby causing the magnetic drug carrier particle to be attracted to the article. Also disclosed are articles, systems, and kits that can be used in the disclosed methods.
摘要:
A very low density polyethylene (VLDPE) film is disclosed. The film has a high average heat seal strength and physical strength. The VLDPE has a density within the range of about 0.880 to 0.914 g/cm3. The film has a seal initiation temperature lower than or equal to 95° C. and an average heat seal strength greater than or equal to 1.75 lb/in. The film has a machine-direction (MD) modulus greater than or equal to 12,000 psi. The film can be used as a monolayer film or as a layer of a multilayer film. It is suitable for heat sealable bags and many other applications.
摘要翻译:公开了一种非常低密度的聚乙烯(VLDPE)膜。 该膜具有高的平均热封强度和体力。 VLDPE的密度在约0.880-0.914g / cm 3的范围内。 该膜具有低于或等于95℃的密封起始温度和大于或等于1.75磅/英寸的平均热密封强度。 该膜具有大于或等于12,000psi的机器方向(MD)模量。 该膜可以用作单层膜或多层膜的层。 适用于热封袋和许多其他应用。
摘要:
A hydrogen storage material having improved hydrogen absorbtion and desorption kinetics is provided by adding graphite to a complex hydride such as a metal-doped alanate, i.e., NaAlH4. The incorporation of graphite into the complex hydride significantly enhances the rate of hydrogen absorbtion and desorption and lowers the desorption temperature needed to release stored hydrogen.
摘要:
The present invention provides a transgenic animal expressing the reporter gene, luciferase, driven by a promoter (e.g. the E2F1 promoter) that acts as a sensor of cell cycle. The luciferase substrate, luciferin, emits light when metabolized, and the light is transmitted through mammalian tissues. Therefore, the transgenic animal model of the present invention allows for monitoring of areas of major cell cycle activity, a characteristic of cancer cells, under adequate visualization conditions. These transgenic animals are useful as in vivo models for testing preventative measures for cancer as well as for testing novel therapeutic modalities.
摘要:
A boomer for generating acoustic signals in a marine seismic survey has a frame towed by a survey vessel. A coil is mounted to the frame and a conductive plate is adjacent to the coil. A capacitor is mounted to the frame, and control electronics system delivers an electric charge stored in the capacitor to the coil. The invention obviates the need for heavy conductive cables between the survey vessel and the boomer in conventional systems where the capacitors are carried by the vessel, while maintaining the desirable acoustic properties of the boomer.
摘要:
A system and particular components are disclosed to measure the reaction time of a user from a signal to start an athletic activity to the start of that activity and the completion time from the start to the finish of that activity. A remote control device responsive to manual input initiates a start signal and a signal to direct that activity toward one or more sensor pads to a user and to a data processor. One or more floor pads sense the presence of the user and signal the user's non-presence to the data processor. One or more sensor pads positioned spacedly distant from the floor pads sense manual contact by the user and signal that event to the data processor. The data processor determines the reaction time and the completion time of an activity from the times of the received signals, annunciates these times in visually cognizable form and stores the data. The sensor pads are compound in nature and provide structure that requires a particular type of contact or contact force above an adjustable predetermined threshold amount to signal completion time.
摘要:
An ethylene polymerization process is disclosed. Ethylene is polymerized in two slurry reaction zones with a C6-C10 alpha-olefin in the presence of a single-site catalyst capable of making a high molecular weight polyolefin. The process yields medium density and linear low density polyethylene having a bimodal molecular weight distribution and a melt index from about 0.10 to about 0.80. Films from the polyethylene have superior impact properties.
摘要:
Disclosed is a polyethylene composition. The composition comprises single-site multimodal resin A and single-site multimodal resin B, wherein resin A differs from resin B in molecular weight, in monomeric composition, in density, in long chain branch concentration or distribution, or in combinations thereof. Disclosed is also a method for making the polyethylene composition. The method comprises polymerizing, in the presence of two or more single-site catalysts, ethylene or its mixture with a C3-C10 α-olefin to form a first multimodal resin and continuing the polymerization in the presence of the same catalysts but in a different hydrogen concentration, in a different monomer composition, or at a different temperature to form a second multimodal resin.
摘要:
A method for making multilayer thin films is disclosed. The method of comprises orienting a thick multilayer film in the machine direction at a drawdown ratio effective to produce a multilayer thin film. The thick multilayer film has a thickness within the range of 1 mil to 5 mils and comprises at least one layer of a linear low density polyethylene (LLDPE) and at least one layer of a high density polyethylene (HDPE) or a medium density polyethylene (MDPE).
摘要:
A multilayer thin film is disclosed. The multilayer thin film has a thickness within the range of about 0.1 mil to about 1 mil and comprises at least one layer of a linear low density polyethylene (LLDPE) and at least one layer of a high density polyethylene (HDPE) or a medium density polyethylene (MDPE). The multilayer thin film has high tear strength and an excellent combination of other properties.