摘要:
The invention concerns a stereo surgical microscope with incident microscope illumination that is generated by an illumination device (12), integrated into the microscope structure (11), having at least one light-emitting diode (1) and an illuminating optical system (10) and preferably having an integrated power source (16).
摘要:
The invention concerns an illumination device having a stop (8) for a surgical microscope, whose stop (8) is capable of covering a partial light flux of the illumination system, the coverage not being accomplished completely as a result of the particular configuration of the stop.
摘要:
A process is disclosed for preparing an organic acid and/or its salts from a solution obtained through fermentation. In this process, a pure carbohydrate-containing raw material is used. The acid-containing solution prepared by means of fermentation is supplied to a cell separation, and the acid-containing permeate is supplied to a protein precipitation, where it is mixed with a silicon-containing precipitant at temperatures between 2.degree. and 70.degree. C. The solution thus obtained is supplied to a protein separation, and the acid-containing permeate is concentrated and then supplied to a single- or multi-stage crystallization or a granulation.
摘要:
The invention is directed to a stereomicroscope having a main objective of variable focal intercept. An optical element is provided in each of the two stereoscopic component beam paths to provide a parallel displacement of the particular beam path. A coupling between each displacement of the two stereoscopic beam paths and the actual adjustment of the focal intercept of the main objective is also provided in such a manner that a preselectable constant stereo angle results even when there is a variation of the focal intercept of the main objective. In this way, a physiologically constant viewing impression results for the viewer.
摘要:
An illuminating device for an operation microscope having a light source including a light guide with a light-exit surface centered on an illumination optical axis. An optical system is arranged on this axis between the light-exit surface and the main objective of the operation microscope, and the optical system comprises a converging lens, an aspheric lens and a variable-aperture diaphragm. This optical system is displaceable in the direction of its axis, and this displacement is coordinated with aperture setting of the diaphragm. The light-exit surface of the light guide is so positioned with respect to the optical system and with respect to the main objective as to illuminate the operation field with requisite size and light-distribution.
摘要:
Spherical biocatalyst particles having increased abrasion resistance are obtained containing a biologically active material such as a microorganism, TiO.sub.2 particles having a size of 0.1 to 1 micrometer and an ionotropic biopolymer such as alginate, pectin, carrageenan or chitosan. The biocatalyst is prepared by forming a homogeneous degassed aqueous dispersion containing the biopolymer, 0.1 to 20% by weight of the biologically active material and 7 to 35% by weight of the TiO.sub.2 particles, and dropping droplets of the dispersion from a nozzle into a precipitation both containing polyvalent cations to precipitate the biopolymer and form spherical biocatalyst particles of 0.05 to 5 mm in diameter. The droplets may pass through a gas space containing an inert gas, air or reactive vapors such as acetaldehyde before reaching the precipitation bath. The TiO.sub.2 particles may be surface-impregnated with Al.sub.2 O.sub.3 and/or aluminum oxide hydrate.
摘要翻译:获得了具有增加的耐磨性的球形生物催化剂颗粒,其含有生物活性物质如微生物,尺寸为0.1至1微米的TiO 2颗粒和离子型生物聚合物如藻酸盐,果胶,角叉菜聚糖或壳聚糖。 生物催化剂通过形成含有生物聚合物的均匀脱气的水性分散体,0.1-20重量%的生物活性物质和7-35重量%的TiO 2颗粒,并将分散体从喷嘴滴落到沉淀物中 两者都含有多价阳离子以沉淀生物聚合物并形成直径为0.05至5mm的球形生物催化剂颗粒。 在达到沉淀池之前,液滴可以通过含有惰性气体,空气或反应性蒸汽(如乙醛)的气体空间。 TiO 2颗粒可以用Al 2 O 3和/或氧化铝水合物进行表面浸渍。
摘要:
In an operation microscope, an illumination beam or ray is projected from a lateral position toward the main optical axis or observation axis, to intersect the observation axis at a point below the main objective of the microscope. At this point of intersection, a beam splitter element (plate or cube) reflects the illumination beam downwardly along the observation axis, toward the object or specimen being examined, while allowing the observation rays to pass along the observation axis. This allows the object to be examined under truly coaxial illumination, which is especially useful for certain types of examination or operation upon the eye. The beam splitter and other parts may be mounted in a housing which may be swung aside when coaxial illumination is not wanted. In a disclosed variation, provision is made for combined coaxial and oblique illumination of the object.
摘要:
The moist ores are dried in direct contact with hot dry tail gas from a contact process plant for producing sulfuric acid. The dried ores are roasted, the SO.sub.2 -containing gases produced by the roasting are processed in the contact process plant to produce sulfuric acid, and the tail gases from the contact process plant are heated up with surplus heat from the contact process plant. These heated tail gases are used to dry the moist ores.
摘要:
The present invention relates to an Osteospermum and Dimorphoteca plant, seed, variety, and hybrid. Another aspect of the present invention relates to an Osteospermum and Dimorphoteca plant having a mutant allele designated KLEDF which results in an altered flower phenotype. The invention also relates to crossing Osteospermum and Dimorphoteca plants containing the KLEDF mutant allele with other Osteospermum and Dimorphoteca plants lacking the KLEDF mutant allele to produce intergeneric and interspecific hybrids. This invention further relates to specific lines of Osteospermum varieties exhibiting the altered-flowering phenotype. Furthermore, the invention relates to pollen, seed, and sexual, as well as asexual progeny of such plants with altered flowers. In addition, the invention relates to methods for propagating said plants and to uses of said plants.
摘要:
An apparatus for stabilizing liquid includes first and second filters, intermediate storage that stores a regenerable stabilizing agent, an inlet line supplying unstabilized liquid and connected to both filters and to the intermediate storage, and a switchable interconnection configured for, immediately after regeneration and cleaning of the first or second filter, selectively causing the one of the first filter unit and the second filter unit to be upstream of an other of the first filter unit and the second filter unit. The first filter unit and the second filter unit are configured to run in different operational phases that are offset in time from one another.