摘要:
The invention relates to a device for the molecular integration or disintegration of solid, liquid and/or gaseous flowing, entrained and/or countercurrent components by means of cavitation in order to modify, build or disintegrate molecular compounds. The invention allows to obtain stable mixtures from immiscible or difficult-to-mix components or to separate such mixtures. The supercavitation molecular reactor allows to build up or disintegrate or modify, with low expenditure in terms of energy, even complex compounds that so far have not been accessible to modification and/or production or only by very extensive multiple processes and a large amount of technical complexity.
摘要:
A method for making a stable aqueous liquid formulation containing at least one enzyme having proteolytic activity is disclosed. The method involves precipitating the enzyme from an aqueous medium with a salt to form a dispersion of the enzyme. The dispersion has a density of 1.22 g/cm.sup.3 to 1.23 g/cm.sup.3 due to the use of the salt. This process yields a sedimentation-resistant stable enzyme dispersion.
摘要翻译:公开了一种制备含有至少一种具有蛋白水解活性的酶的稳定含水液体制剂的方法。 该方法包括用盐从水性介质中沉淀酶以形成酶的分散体。 分散体由于使用盐而具有1.22g / cm 3至1.23g / cm 3的密度。 该方法产生耐沉降稳定的酶分散体。
摘要:
There are presented compounds of the formula ##STR1## wherein R.sup.1 is one of the 3-substituents usable in cephalosporin chemistry, R.sup.2 is hydrogen, lower alkyl or COOR.sup.3 -lower alkyl, wherein R.sup.3 is hydrogen, a cation of a base or a readily hydrolyzable ester group, and X is sulphur, oxygen or one of the groups --SO-- and --SO.sub.2 --, and the readily hydrolyzable esters, readily hydrolyzable ethers and salts of these compounds and hydrates of the compounds of formula I or of their esters, ethers and salts, also presented are methods for the manufacture of these compounds as well as compounds used in their manufacture.
摘要:
There is presented cephalosporin derivatives which are the readily hydrolysable esters and ethers of compounds of the general formula ##STR1## wherein R represents furyl, thienyl or phenyl optionally substituted by halogen, hydroxy, lower alkoxy or lower alkyl, R.sub.1 represents lower alkyl or aminocarbonylmethyl and X represents a group of the formula ##STR2## in which one of the two symbols R.sub.2 and R.sub.3 represents hydrogen and the other represents lower alkyl and R.sub.4 represents lower alkyl,as well as salts of said esters and ethers and hydrates of said esters, ethers and salts.
摘要:
A process for the production of a composite membrane consisting of a porous supporting membrane and a thin separating membrane. The separating membrane is produced on the surface of a carrier film (consisting essentially of a soluble polymer). The carrier film coated with the separating membrane is placed with its separating membrane side on a porous supporting membrane such that the separating membrane is between the supporting membrane and the carrier film. The carrier film is then dissolved.
摘要:
An implantable prosthesis anchorage which contains a non-porous outer coating in the regions which is positioned in contact with bone. The non-porous outer coating consists of (i) at least one bioactive resorbable ceramic material which is a calcium phosphate and (ii) at least one polymer which is mechanically and chemically stable in the body. The ceramic material is in particulate form having particle diameters between 0.5 and 1 mm. The ceramic material particles is incorporated in the polymer in such a way that resorption of the ceramic material leads to a polymer structure with continuous pores filled with living bone tissue. Bioactivating bonding residues of the ceramic material are left on the inner surfaces of the filled pores which were created by the resorption of the ceramic material.
摘要:
There are presented compounds of the formula ##STR1## wherein R.sup.1 is one of the 3-substituents usable in cephalosporin chemistry, R.sup.2 is hydrogen, lower alkyl or COOR.sup.3 -lower alkyl, wherein R.sup.3 is hydrogen, a cation of a base or a readily hydrolyzable ester group, and X is sulphur, oxygen or one of the groups --SO-- and --SO.sub.2 --,and the readily hydrolyzable esters, readily hydrolyzable ethers and salts of these compounds and hydrates of the compounds of formula I or of their esters, ethers and salts, also presented are methods for the manufacture of these compounds as well as compounds used in their manufacture.
摘要:
There are presented compounds of the formula ##STR1## wherein R.sup.1 is one of the 3-substituents usable in cephalosporin chemistry, R.sup.2 is hydrogen, lower alkyl or COOR.sup.3 -lower alkyl, wherein R.sup.3 is hydrogen, a cation of a base or a readily hydrolyzable ester group, and X is sulphur, oxygen or one of the groups --SO-- and --SO.sub.2 --, and the readily hydrolyzable esters, readily hydrolyzable ethers and salts of these compounds and hydrates of the compounds of formula I or of their esters, ethers and salts, also presented are methods for the manufacture of these compounds as well as compounds used in their manufacture.
摘要:
An implantable drug depot for the treatment of diseases of the bone or bone marrow. The depot consisting of a matrix in which at least one active ingredient is incorporated and contains at least one adjuvant agent to control the kinetics of the drug release. The matrix material consists of resorbable sintered calcium phosphate composed of CaO and P.sub.2 O.sub.5 in a ratio between 5:1 and 2:1.
摘要:
For surface modification of natural or synthetic macromolecular substrates, organic compounds are used that have hydrophilic, hydrophobic, oleophobic, ionic and/or cross-linkable groups and that also have groups which are easily convertible to nitrene or carbene, e.g., azide or diazo groups. Such organic compounds are applied to the surface to be modified as a monolayer or oligolayer from a solution thereof and then are photochemically activated. Conditions which cause orientation of the molecule with the azide or diazo group toward the surface of the substrate are advantageous. The other cross-linkable groups may promote diagonal cross-linking of the applied layer.