摘要:
In the purification of an ammonium fluoride solution containing silicic acid by adding iron (III) ions and precipitating the iron (III) ions at a pH above 8.5 and a concentration of free ammonia in the solution of more than about 1% by weight, the silicic acid being carried with the iron (III) ion precipitate, the improvement which comprises adding the iron (III) ions to the ammonium fluoride solution at a temperature below about 30.degree. C. and, before removal of the precipitate, to the solution a salt of at least one of the alkali metals, alkaline earth metals, zinc, aluminum and lead in such quantity that the solution becomes saturated with such salt.
摘要:
The present invention encompasses compounds of general formula (1) wherein R1 to R3 are defined as in claim 1, which are suitable for the treatment of diseases characterized by excessive or abnormal cell proliferation, and the use thereof for preparing a medicament having the above-mentioned properties.
摘要:
The present invention encompasses compounds of general formula (1) wherein R1 to R3 and X are defined as in claim 1, which are suitable for the treatment of diseases characterized by excessive or abnormal cell proliferation, and the use thereof for preparing a medicament having the above-mentioned properties.
摘要:
The present invention encompasses compounds of general formula (1) wherein R1 to R3 and X are defined as in claim 1, which are suitable for the treatment of diseases characterised by excessive or abnormal cell proliferation, and the use thereof for preparing a medicament having the above-mentioned properties.
摘要:
In a method for determining a parameter in an automatic study and data management system, data is gathered in a knowledge database, and a parameter is determined based the data gathered in the knowledge database. The data is correlated to at least one of a configuration and implementation of a previous clinical study. The parameter is usable for configuring a future clinical study.
摘要:
A method is for verifying the feasibility of a medical study using acceptance criteria for patients. The method includes defining target criteria for the study. Based on the acceptance criteria, a patient collective including potential patients is selected from a database containing patient data of patients. The patient data of the patient collective are evaluated based on the target criteria. Finally, a measure for the feasibility of the study is established.
摘要:
A method is disclosed for performing a clinical study on a patient. The study-related or patient-related data is stored in a memory during the study. The memory is readable by a physician who is foreign to the study and is associated with the patient. An information system for a clinical study on a patient encompasses a memory for study-related or patient-related data, which is allocated to the patient, a data input device for storing data in the memory, and a data reading device for reading out the data from the memory. The data reading device is accessible to a physician who is foreign to the study and is associated with the patient.
摘要:
A device for additive-free, catalytically induced oxidation of solid carbon particles and decomposition of chemical compounds, comprising a converter chamber with compartments, in which porous structure catalyst carrier matrix profiles are mounted, so that a space between the internal diameter of catalyst profiles is connected to an inlet connection of the converter chamber, and a space around the external diameter of the catalyst profiles is connected to an outlet connection into the catalyst chamber. The profiles are mounted so that gas particles reach outlets only by passing through porous profiles. Advantageously, a third opening through which liquid, gaseous media, e.g., NO2, O3 or H2O or auxiliary means maybe in front of the porous structures. The porous structures are made of catalytically active material with catalytic action at temperatures below 400° C., preferably below 350° C. and especially below 300° C. The low-temperature below 250° C. by H2O is preferred.
摘要:
In an apparatus for treatment of a subject with acoustic waves, a spatial allocation, required for the treatment of the patient and a source of acoustic waves relative to each other is effected by a surgical work station using a three-dimensional navigation system on the basis of a number of images of a region to be treated, which are obtained independently of the treatment apparatus, in different coordinate systems, and are displayed on a display screen of the work station.
摘要:
The invention is directed to a therapy apparatus for treatment with focussed ultrasound, comprising a cooled ultrasound source (1) implemented as phased array and a preceding acoustic lens (6). The ultrasound source (1) also comprises a base plate (3) arranged between the lens (6) and the ultrasound source (1) on whose side facing away from the lens (6) the ultrasound transducer elements (2.sub.1 through 2.sub.6) of the phased array are attached, whereby the base plate (3) is composed of a material with good thermal conductivity, whereby an ultrasound-conductive coolant that adjoins that side of the base plate (3) facing toward the lens (6) is situated between the lens (6) and the ultrasound source (1), whereby the base plate (3), at least in the region of the ultrasound transducer elements (2.sub.1 through 2.sub.6), comprises a thickness that is equal to an odd-numbered multiple of a quarter of the wavelength of the ultrasound in the material of the base plate (3).