摘要:
A dynamically configurable clamping device for applying a desired electrical current to a tissue membrane includes an input lead electrically connected to the tissue membrane to provide a sensed signal indicative of voltage across the membrane. An input circuit includes an analog-to-digital converter, and is responsive to the sensed signal and provides a digitized signal indicative of the sensed signal. A digital signal processor executes selected program instructions to operate in a selected one of (i) a voltage clamp mode, (ii) a current clamp mode or (iii) a dynamic clamp mode based upon the state of a mode selection signal indicative of the selected operating mode. The digital signal processor provides a digital current command signal indicative of the current to be applied to the tissue membrane. An output circuit receives the digital current command signal, and generates a current signal indicative thereof. An output lead receives and applies the current signal to the tissue membrane. Digital feedback control is advantageous over the traditional systems by providing programmability, capability for dynamic changes of clamping modes, hardware simplification, and integration of multi-channel clamping systems. The digital signal processor in the feedback loop provides programmability in the control algorithm.
摘要:
A device is disclosed for detecting a voltage potential from a tissue membrane. The device includes an input circuit, an output circuit and a digital signal processor. The input circuit receives a membrane voltage potential from an electrode. The output circuit receives an output command signal and provides a current output signal to the electrode. The digital signal processor is coupled to the input circuit and the output circuit. The digital signal processor provides the output command signal, and waits a delay period prior to receiving the membrane voltage signal from the input circuit.
摘要:
A bioactive glass composition comprising one or more glasses comprising Si02, P205 and a fluoride, the Si02 content being less than 40 mole %, the P205 content being at least 4 mole %, and the fluoride content being greater than 1 mole %. The bioactive glass or glass-ceramic can be used in a number of medical applications, including dental applications such as toothpaste.
摘要翻译:一种生物活性玻璃组合物,其包含一种或多种包含SiO 2,P 2 O 5和氟化物的玻璃,SiO 2含量小于40摩尔%,P205含量为至少4摩尔%,氟含量大于1摩尔%。 生物活性玻璃或玻璃陶瓷可用于许多医疗应用,包括牙科应用如牙膏。
摘要:
An enhanced system and method for handling, matching and executing a diverse group of limit-priced orders in an electronic options environment is disclosed. Most of the order types disclosed are automatically repriced and reposted as the NBBO changes to increase their execution opportunities. Market maker entitlements are integrated with the order processing, so that the market maker is guaranteed an allocation of the trade if the market maker is at the NBBO when an order priced at or better than the NBBO is received. Once posted to the order book, the displayed price of an order may be eligible for preferential execution in a market maker entitlement process, regardless of whether the displayed price is original or has been automatically repriced.
摘要:
An auto-injector for dispensing a predetermined dose of medicament is disclosed. The auto-injector includes a needle cover operative to engage an injection site. The needle cover is configured to move from a retracted position prior to a medicament dispensing operation to an extended locked position after the medicament dispensing operation. Any residual activation force remaining after the medicament dispensing operation is contained within the auto-injector and is not directed to the needle cover, thus attenuating, if not eliminating, any kickback effect.
摘要:
The present invention relates to the use of Ulocladium oudemansii as a biological control agent. Processes and compositions for the biological control of Botrytis species using Ulocladium oudemansii are also provided.
摘要:
The present invention provides a method of modifying a plant phenotype by transforming a plant to alter the level of expression of non-symbiotic plant hemoglobin in the plant, whereby the transformed plant exhibits, under normal oxygen conditions, a plant phenotype that is modified as compared to a non-transformed plant. Plants exhibiting modified phenotypes under normal oxygen conditions also are provided. Methods of modifying the response to a plant hormone in a plant also are provided.
摘要:
An automatic medicament injector having a compartment for a dry medicament component and a compartment for a wet medicament component. The two compartments are separated by a seal structure that converts from a sealing condition to a mixing condition when the device is activated. The seal structure includes a wiper that scrapes the interior walls in the dry component compartment to prevent the dry component from accumulating at the seal/glass interface. A tapered insert funnels the mixed medicament components to an attached needle assembly, but can be removed when the device is filled. A filter is provided between the medicament compartments and the needle assembly. A chamber between the filter and the needle allows for better flow through the filter. An actuation assembly drives the seal structure into the mixing condition and forces the mixed medicament through the needle and into the user.
摘要:
An automatic medicament injector having a compartment for a dry medicament component and a compartment for a wet medicament component. The two compartments are separated by a seal structure that converts from a sealing condition into a mixing condition when the device is activated. The seal structure includes a wiper that scrapes the interior walls in the dry component compartment to prevent the dry component from accumulating at the seal/glass interface. A tapered insert funnels the mixed medicament components to an attached needle assembly, but can be removed when the device is filled. A filter is provided between the medicament compartments and the needle assembly. A chamber between the filter and the needle allows for better flow through the filter. An actuation assembly drives the seal structure into the mixing condition and forces the mixed medicament through the needle and into the user.
摘要:
A reprice-to-block order and related market center and process are disclosed which automatically reprice a posted limit order to the price of a block trade executed at an inferior price on a market away from the market center that posted the limit order.