摘要:
To determine the uniformity of an optical component, a light beam is directed to impinge on a surface of an optical component at each of multiple points. A characteristic of the light beam impinging on the optical component surface at each of the multiple points is modified so as to have multiple different values. Light from the impinging light beam that passes through the optical component at each of the multiple points, with the light beam characteristic at each of the multiple different values, is detected. The non-uniformity of the optical component is determined based on the detected passing light.
摘要:
1,4,7,10-Tetrazacyclododecanes carrying a side chain terminating in a group capable of reacting with an antibody, and their complexes with a di- or tripositive metal having a coordination number of 6 or more can be used to prepare imaging agents. Typical metals are indium, copper, lead, bismuth, yttrium, terbium, gadolinium, and scandium. The compounds can be reacted with a monoclonal or polyclonal antibody or antibody fragment to target the metal to a specific type of tissue.
摘要:
A programmable gate array is disclosed for implementing asynchronous logic. In one embodiment, the array includes a set of cells, at least one of which includes a threshold gate having a plurality of inputs, an output, and a threshold value. Signals may assume an ASSERTED state having a logic meaning and a NULL state that has no logic meaning. The gate output switches to NULL when all inputs are NULL, and switches to the ASSERTED state when the number of ASSERTED inputs exceeds the threshold value. In the preferred embodiment, the gate exhibits hysteresis such that the output remains ASSERTED while the number of ASSERTED inputs remains greater than zero, less than the threshold value. In an alternate embodiment, an array of simplified threshold elements is used to form more complex threshold gates.
摘要:
A flashlight includes a rechargeable battery and is loaded from the front. The contacts are on an intermediate portion between the barrel extended and made with contacts of a recharging device. There is a helical spring member between the switching device above the barrel and the top of the battery and a helical spring member on the base of the barrel at the bottom of the battery. An enlarged head is located above the barrel and there is the intermediate portion between the head and the barrel. The intermediate portion receives the switching device.
摘要:
##STR1## Conjugate compounds are described comprising a compound of formula (1), wherein A is a group --Alk 3 -- or --Alk 3 N(R 4 )Alk 1 --, Alk 2 , Alk 3 and Alk 4 which may be the same or different is each a C 1-4 alkylene chain optionally substituted by one or more C 1-6 alkyl groups; and R 1 , R 2 , R 3 and R 4 , which may be the same or different, is each a hydrogen atom or a group--AlkR 5 where Alk is an optionally substituted straight or branched C 1-6 alkyl group and R 5 is a hydrogen atom or a --CO 2 H, --CONR 6 R 7 (where R 6 and R 7 , which may be the same or different is each a hydrogen atom or an alkyl group) or --P(X 1 )(X 2 R 8 )L group where X 1 and X 2 is each an oxygen or sulphur atom. R 8 is a hydrogen atom or an alkyl group and L is an aliphatic, aromatic, or heteroaromatic group or a linker group with the proviso that at least one of R 1 , R 2 , R 3 and R 4 is a group AlkP(X 1 )(X 2 R 8 )L where L is a linker group; and a metal complexes and/or salts thereof, coupled to a protein, peptide or carbohydrate. The conjugates are useful for imaging and in the treatment of abnormal cell disorders, such as in the treatment of tumours.
摘要:
##STR1## Metal complex of tetra-aza macrocycles of formula (1) wherein Alk 1 , Alk 2 , Alk 3 and Alk 4 , which may be the same or different, is each a C 1-4 alkylene chain optionally substituted by one or more optionally substituted C 1-6 alkyl groups; and R 1 , R 2 , R 3 and R 4 which may be the same or different is each a hydrogen atom or a group AlkR 5 where Alk is an optionally substituted straight or branched C 1-6 alkyl group and R 5 is a hydrogen atom or a --CO 2 H,--CONR 6 R 7 [where R 6 and R 7 , which may be the same or different, is each a hydrogen atom or a C 1-6 alkyl group] or --P(X 1 )(X 2 R 8 )R 9 group where X 1 and X 2 , which may be the same or different is each an oxygen or sulphur atom, R 8 is a hydrogen atom or an alkyl group and R 9 is an aliphatic, aromatic or heteroaromatic group, with the proviso that at least two of R 1 , R 2 , R 3 and R 4 is a group -AlkP(X 1 )(X 2 R 8 )R 9 or one or R 1 , R 2 , R 3 and R 4 is a group -AlkP(X 1 )(X 2 R 8 )R 9 and at least one of the remaining groups R 1 , R 2 , R 3 and R 4 is a group -AlkCO 2 H or -AlkCONR 6 R 7 , or a salt thereof, for use as contrast agents in nuclear magnetic resonance imaging are described.
摘要:
Purified terephthalic acid is prepared by subjecting an aqueous solution of crude terephthalic acid to hydrogenation to reduce impurities, crystallizing this solution to produce a slurry of purified terephthalic acid in an aqueous liquor, and carrying out an integrated separation and washing process. The integrated separation is performed by exchanging the acidic reaction medium with water to produce a water containing cake of terephthalic acid.
摘要:
The conjugation of antibodies to a macrocyclic conjugate compound wherein the conjugate compound has the structure (I), wherein R.sup.1 is --(CH.sub.2).sub.p --R.sup.6 --CH.sub.2).sub.q -- where p and q are the same or different and are 0, 1 or 2, and --R.sup.6 -- is --((CH.sub.2).sub.n --, where n is 0 or 1, --NH--, --O--, --S-- or (II), R.sup.1 optionally being alkyl substituted, provided that neither p nor q is 0 unless R.sup.6 is --CH.sub.2 --; R.sup.2 are --CH.sub.2 CH.sub.2 -- or --CH.sub.2 CH.sub.2 CH.sub.2 --, optionally alkyl, alkoxyalkyl or hydroxyalkyl substituted; R.sup.3 are the same or different and are --H, alkyl, hydroxyalkyl, alkoxyalkyl, carboxyalkyl, carboxyalkyl ester, phosphate, sulphonate or phosphonate; R.sup.4 is one of the compounds of formula (III) optionally alkyl substituted, wherein R.sup.7 is --H, alkyl, hydroxyalkyl, or alkoxyalkyl provided that when R.sup.4 is (III d), R.sup.3 is not carboxyalkyl, R.sup.5 is a linker, and Ab is an antibody. The conjugate compound provides for complexes of metals such as Tc, Co, Re, Cu, Au and Ag which are useful reagents for in vivo imaging and therapy.
摘要:
The present invention relates to increasing longevity of the nitrogen content of soil through improved liquid delivery formulations of nitrification inhibitors. The liquid formulation can also be comprised of nitrification inhibitors and optionally urease inhibitors that are blended solutions of each. The nitrification inhibitors are present in a mixture that comprises both a protic and an aprotic solvent system. The novel formulations are designed to be applied to fertilizers, especially urea and manure based fertilizers. The delivery formulations provide an environmentally sound and inherently safe solvating system that improves the storage stability of the urease inhibitors by utilizing liquid organic non-water containing solvents, maintains the nitrification inhibitors in solution to storage temperatures of at least 10° C., and provides improved application to fertilizer of nitrification inhibitors. These delivery formulations enable safe storage, transport and subsequent application or blending with urea-based or manure-based fertilizers that can be applied to soil in either a liquid or granular form to provide improved nitrogen retention in the soil for uptake for plant life.
摘要:
The present invention relates to increasing longevity of the nitrogen content of soil through improved liquid delivery formulations of nitrification inhibitors. The liquid formulation can also be comprised of nitrification inhibitors and optionally urease inhibitors that are blended solutions of each. The nitrification inhibitors are present in a mixture that comprises both a protic and an aprotic solvent system. The novel formulations are designed to be applied to fertilizers, especially urea and manure based fertilizers. The delivery formulations provide an environmentally sound and inherently safe solvating system that improves the storage stability of the urease inhibitors by utilizing liquid organic non-water containing solvents, maintains the nitrification inhibitors in solution to storage temperatures of at least 10° C., and provides improved application to fertilizer of nitrification inhibitors. These delivery formulations enable safe storage, transport and subsequent application or blending with urea-based or manure-based fertilizers that can be applied to soil in either a liquid or granular form to provide improved nitrogen retention in the soil for uptake for plant life.