摘要:
16-membered macrolide compounds inhibit growth of various microbial species and have utility in the treatment of systemic or topical microbial infections, including methicillin-resistant strains (Formula I).
摘要:
Estimating impedance of energy storage devices includes generating input signals at various frequencies with a frequency step factor therebetween. An excitation time record (ETR) is generated to include a summation of the input signals and a deviation matrix of coefficients is generated relative to the excitation time record to determine cross-talk between the input signals. An energy storage device is stimulated with the ETR and simultaneously a response time record (RTR) is captured that is indicative of a response of the energy storage device to the ETR. The deviation matrix is applied to the RTR to determine an in-phase component and a quadrature component of an impedance of the energy storage device at each of the different frequencies with the cross-talk between the input signals substantially removed. This approach enables rapid impedance spectra measurements that can be completed within one period of the lowest frequency or less.
摘要:
Methods of rapidly measuring the impedance spectrum of an energy storage device in-situ over a limited number of logarithmically distributed frequencies are described. An energy storage device is excited with a known input signal, and the response is measured to ascertain the impedance spectrum. The excitation signal is a limited time duration sum-of-sines consisting of a select number of frequencies. In one embodiment, magnitude and phase of each of frequency of interest within the sum-of-sines is identified when the selected frequencies and sample rate are logarithmic integer steps greater than two. This technique requires a measurement with a duration of one period of the lowest frequency. In another embodiment, where the selected frequencies are distributed in octave steps, the impedance spectrum can be determined using a captured time record that is reduced to a half-period of the lowest frequency.
摘要:
An integrated bee monitoring system for monitoring bee colonies in a hive is described. The system has a central microprocessor, at least two input transducers and at least two output signals. Input transducers include sensors which report the status of the colonies including colony weight, temperature, and relative humidity. A bee counter can also be included in the system to indicate colony activity. A bee counter is disclosed which uses an amplifying, multiplexes hysteresis and debounce circuitry to enable rapid and accurate polling of a single passageway. Information collected can be retrieved by read-out or liquid crystal display. Alternatively, information can be retrieved by telephone line or wireless communications. The bee monitoring system also can remotely control peripheral devices such as feeders or chemical samplers.
摘要:
A Method of reducing the occurrence of brain cell damage or death caused by transient cerebral hypoxia/ischemia condition or a traumatic brain injury (TBI) event. The method typically comprises identifying a subject with a transient cerebral hypoxic and/or ischemic condition, or a TBI, and within 24 hours of onset of the condition, administering to the subject a continuous intravenous infusion dose of methamphetamine in an amount sufficient to reduce the occurrence of brain cell damage or death caused by the condition. Preferably, in addition to the continuous intravenous infusion dose, a bolus dose of methamphetamine is administered to the subject as soon as possible after onset of the condition or occurrence of the TBI event.
摘要:
The present invention is directed to a method of reducing the occurrence of neuronal cell damage, including death, caused by transient cerebral hypoxia and/or ischemia. The method comprises the steps of: diagnosing a subject having a transient cerebral hypoxic and/or ischemic condition; and within 16 hours after onset of the condition, administering to the subject a neuroprotective amount of a pharmaceutical agent. The pharmaceutical agent is preferably selected from the group consisting of: a central nervous system stimulant (CNSS), monoamine neurotransmitter, monoamine oxidase inhibitor (MAOI), tricyclic antidepressant (TCA), or a combination thereof. Preferred agents include amphetamines, methamphetamine, methylphenidate, methylenedioxymethamphetamine, or a combination thereof.
摘要:
A controlled nitric acid process employing oxygen and nitric acid as co-oxidants is used to oxidize organic compounds subject to nitric acid oxidation, to their corresponding carboxylic acids. Oxidation of some carbohydrates by this process can produce one or more of their corresponding acid forms. The process is carried out at moderate temperatures, typically in the range of 20°C to 45 °C in a closed reactor, with oxygen gas being introduced into the reaction chamber as needed in order to sustain the reaction. Computer controlled reactors allow for careful and reproducible control of reaction parameters. Nitric acid can be recovered by a distillation / evaporation process, or by diffusion dialysis, the aqueous solution made basic with inorganic hydroxide, and the residual inorganic nitrate removed using a filtration (nanofiltration) device. The method eliminates issues of thermal control of the oxidation, release of nitrogen into the atmosphere, and post-reaction difficulties in the removal of nitric acid and inorganic nitrates.
摘要:
Racemic mixtures and individual enantiomers of fluorine-18 or carbon-11 radiolabeled 2'-alkyl-6-nitroquipazine ligands are serotonin transporter (SERT) tracers for positron emission tomography (PET) imaging. The non-radioactive ligand forms possess therapeutic antidepressant in vitro and in vivo pharmacological binding profiles in rodent brain and cells expressing human serotonin transporter (hSERT). Twelve 2'-alkyl-6-nitroquipazine ligands potently bind in sub-nanomolar concentrations to the pre-synaptic SERT binding site where established antidepressant drugs bind and inhibit the re-uptake of the neurotransmitter serotonin (5-HT). In vivo tracer studies in rats as well as monkey PET scan trial have demonstrated the fluorine-18 and carbon-11 positron radionuclide labeled tracers perform as quantitative tracers of specific binding the SERT protein in live brain.
摘要:
The present invention provides an L-aspartate derivative compound represented by the following structure (I) wherein Ar represents an aromatic group; L represents a linking moiety; R represents hydrogen, alkyl, aryl, or heteroaryl; and ~~~ indicates that the stereochemistry at the 3-position can be R or S. The compounds of the invention are useful for selectively inhibiting EAAT3 and for enhancing synaptic transmission. Additionally, the inventive compounds can be used to treat a patient suffering from Alzheimers disease or a neuropathy or a neurodegenerative disease in which L-glutamate transporter activity is involved in the onset of the disease.