摘要:
Disclosed is a radio frequency (RF) power calorimeter having a load electrically coupled to a RF input, a variable low-frequency power source electrically coupled to the load and configured to apply low-frequency bias to the load. The RF power calorimeter includes a thermal medium thermally coupled to the load. Additionally, the RF power calorimeter includes an outlet temperature sensor thermally coupled to the thermal medium, the outlet temperature sensor being positioned to measure the temperature of the thermal medium due to heating by the load. The RF power calorimeter also has circuitry configured to use temperature measurements of the thermal medium in thermal contact with an RF load in combination with the low-frequency bias to measure average power of an RF source electrically coupled to the RF input. Also disclosed in a method of measuring RF power using the RF power calorimeter.
摘要:
Disclosed is a radio frequency (RF) power calorimeter having a load electrically coupled to a RF input, a variable low-frequency power source electrically coupled to the load and configured to apply low-frequency bias to the load. The RF power calorimeter includes a thermal medium thermally coupled to the load. Additionally, the RF power calorimeter includes an outlet temperature sensor thermally coupled to the thermal medium, the outlet temperature sensor being positioned to measure the temperature of the thermal medium due to heating by the load. The RF power calorimeter also has circuitry configured to use temperature measurements of the thermal medium in thermal contact with an RF load in combination with the low-frequency bias to measure average power of an RF source electrically coupled to the RF input. Also disclosed in a method of measuring RF power using the RF power calorimeter.
摘要:
Disclosed are RNA constructs which function to bind and/or inhibit a non-coding RNA (e.g., a miRNA). Such RNA constructs include an optionally weakened stem-loop structure stabilized by binding to a non-coding RNA. The non-coding RNA preferentially binds to the RNA construct as compared to a natural target (e.g., a mRNA). In certain embodiments, the RNA construct inhibits the function of the non-coding RNA. Such RNA constructs also have three-way junction joining regions 3′ and 5′ of the stem-loop structure.
摘要:
Disclosed herein are isotopically labeled calcofluor derivatives and uses of such to detect fungi, such as filamentous fungi, including Aspergillus species, such as by positron emission tomography (PET) scanning. In some examples, the disclosed compounds have a formula of wherein R1 is an amine, a hydroxyl group, a sulfide, a carboxylic acid, an amide, an alkyl, or aryl ; R2 is —NHC(O)—R3—L or —C(O)NH—R3—L, wherein R3 is an aryl or an aliphatic group (such as alkyl); each R4 independently may be selected from halogen, aliphatic (such as alkyl), aryl, amine, hydroxyl, haloalkyl, carboxylic acid, amide, aralkyl, cyano, ester, thiol, thioether, or alkoxy; each R5 independently may be selected from hydrogen, aralkyl, alkyl, or aryl, with any one of the aralkyl, alkyl, or aryl groups optionally being substituted with any one of the substituents provided for R4; each n independently is 1, 2, 3, 4, or 5; and L is 18F or a chelator capable of chelating a radiolabel (such as chelators for [18F]AlF, 64Cu, 68Ga), 1,4,7,10-tetraazacyclododecane-tetraacetic acid (DOTA) or 1,4,7-triazacyclononane-triacetic acid (NOTA).
摘要:
Disclosed is a radio frequency (RF) power calorimeter having a load electrically coupled to a RF input, a variable low-frequency power source electrically coupled to the load and configured to apply low-frequency bias to the load. The RF power calorimeter includes a thermal medium thermally coupled to the load. Additionally, the RF power calorimeter includes an outlet temperature sensor thermally coupled to the thermal medium, the outlet temperature sensor being positioned to measure the temperature of the thermal medium due to heating by the load. The RF power calorimeter also has circuitry configured to use temperature measurements of the thermal medium in thermal contact with an RF load in combination with the low-frequency bias to measure average power of an RF source electrically coupled to the RF input. Also disclosed in a method of measuring RF power using the RF power calorimeter.
摘要:
An improved method of altering a fluid-borne contaminant includes the steps of: providing a pump (21) having an inlet (22) and an outlet (23); connecting the pump inlet to a source (24) of contaminated fluid; operating the pump at a pressure ratio of at least 2.0 so as to sufficiently elevate the temperature of the fluid and contaminants passing through the pump, or, alternatively, operating the pump so that the outlet temperature of the fluid and contaminants passing therethrough is at least about 200null C.; and controlling the time during which the temperature of the fluid and contaminants are elevated; thereby to alter or convert substantially all of the contaminants passing through the pump.
摘要:
The invention relates to the development of chimeric OspA molecules for use in a new Lyme vaccine. More specifically, the chimeric OspA molecules comprise the proximal portion from one OspA serotype, together with the distal portion from another OspA serotype, while retaining antigenic properties of both of the parent polypeptides. The chimeric OspA molecules are delivered alone or in combination to provide protection against a variety of Borrelia genospecies. The invention also provides methods for administering the chimeric OspA molecules to a subject in the prevention and treatment of Lyme disease or borreliosis.
摘要:
Disclosed herein are isotopically labeled calcofluor derivatives and uses of such to detect fungi, such as filamentous fungi, including Aspergillus species, such as by positron emission tomography (PET) scanning. In some examples, the disclosed compounds have a formula of wherein R1 is an amine, a hydroxyl group, a sulfide, a carboxylic acid, an amide, an alkyl, or aryl; R2 is —NHC(O)—R3—L or —C(O)NH—R3—L, wherein R3 is an aryl or an aliphatic group (such as alkyl); each R4 independently may be selected from halogen, aliphatic (such as alkyl), aryl, amine, hydroxyl, haloalkyl, carboxylic acid, amide, aralkyl, cyano, ester, thiol, thioether, or alkoxy; each R5 independently may be selected from hydrogen, aralkyl, alkyl, or aryl, with any one of the aralkyl, alkyl, or aryl groups optionally being substituted with any one of the substituents provided for R4; each n independently is 1, 2, 3, 4, or 5; and L is 18F or a chelator capable of chelating a radiolabel (such as chelators for [18F]AlF, 64Cu, 68Ga),1,4,7,10-tetraazacyclododecane-tetraacetic acid (DOTA) or 1,4,7-triazacyclononane-triacetic acid (NOTA).
摘要:
Provided herein is a computerized image reconstruction apparatus and method that includes recording projection path information and energy loss information of a plurality of particles traversing an object being imaged and determining an estimated image of the object based on the projection path information and the energy loss information sampled into a projection format. The estimated image includes an active volume defined by an enclosure border. Cost function minimization uses an Adaptive-weighted Total Variation cost function, a Penalized Weighted Least-Squares cost function, or an Alpha-Divergence cost function to update the estimated image. An iterative updating algorithm corresponding to the cost function updates the estimated image and produces a final image based on the estimated image according to a predetermined threshold.
摘要:
A computer-implemented method for forecasting losses in a financial portfolio includes estimating parameters of an autoregressive-moving-average generalized-autoregressive-conditional-heteroscedastic (ARMA-GARCH) model for each individual asset in a financial portfolio by performing a parallel maximum likelihood estimation, estimating parameters of a copula dependence structure for standardized residuals of the ARMA-GARCH model, and estimating a Value-at-Risk (VaR) for the financial portfolio from the ARMA-GARCH model parameters and the copula dependence structure parameters.