摘要:
Herein is disclosed a method of generating ascorbic acid from yeast. In one embodiment, the yeast is a Zygosaccharomyces spp. or a Kluyveromyces spp. growing in a medium comprising an ascorbic acid precursor. In a second embodiment the yeast is a recombinant yeast growing in a medium comprising an ascorbic acid precursor. Preferably the recombinant yeast is transformed with a coding region encoding an enzyme selected from L-galactose dehydrogenase (LGDH), L-galactono-1,4-lactone dehydrogenase (AGD), D-arabinose dehydrogenase (ARA), D-arabinono-1,4-lactone oxidase (ALO) or L-gulono-1,4-lactone oxidase (RGLO). The ascorbic acid precursor is preferably D-glucose, L-galactose, L-galactono-1,4-lactone, or L-gulono-1,4-lactone. In another preferred embodiment the ascorbic acid is accumulated in the medium at levels greater than background. Preferably, the yield of the conversion of the precursor to ascorbic acid is preferably at least about 35%.
摘要:
The invention is directed to a motor-powered appliance 10 for personal use as, for example, an appliance for oral or dental hygiene, a shaver or the like, with a housing 12 for accommodating the drive means 20 as well as at least one rechargeable energy-storage cell 18. The housing 12 is composed of at least two housing sections 13, 14 sealingly connectible with each other. The appliance 10 has an associated case structure 22 incorporating in particular means 24 for charging the energy-storage cells 18, or in particular means 26 for the storage of attachments for the appliance 10. The case structure 22 includes two abutment means which, in forming an integral part of the case structure 22, provide a tool for severing the housing sections 13, 14.
摘要:
A scraper-chain conveyor channel section comprises a pair of side walls and a floor plate extending between the side walls and connecting the side walls together. Each of the side walls has upper, lower and intermediate inwardly-extending flanges. The floor plate is connected to the intermediate flanges of the two side walls. Each of the side walls is constituted by an upper profiled bar and a lower profiled bar, each of the profiled bars being a generally U-shaped rolled section. Each of the lower profiled bars has a bottom flange and a top flange parallel to the bottom flange. The top flange of each lower profiled bar forms a support surface for the associated upper profiled bar, and constitutes part of the intermediate flange of the associated side wall. Each of the side walls is provided with a connecting bar for laterally supporting the associated upper profiled bar. Each of the connecting bars is secured to the exterior of the associated lower profiled bar, and projects upwardly beyond the top flange of that lower profiled bar.
摘要:
An attachment for an oral hygiene device is disclosed. The attachment includes a housing; a shaft element movably arranged within the housing and arranged for being coupled to a drive shaft of a handle of the oral hygiene device; and a flexible sealing element attached to the shaft element. The flexible sealing element is arranged to seal a cavity within the attachment intended for accommodating at least a part of the drive shaft in an attached state.
摘要:
A device and a method for imaging an animal including an animal holding device for keeping the animal immobile and at a desired temperature during the scanning operation for imaging the animal in real-time in a non-destructive manner.
摘要:
An imaging device for imaging an anaesthetized animal such as a rodent (rats or mice or other animals), with the device having a split array coil capable of providing at least two channels for use in a restraining assembly with animal bed for magnetic resonance imaging (MRI) the animal in real-time in a non-destructive manner.
摘要:
A medical punch with a hollow shaft, a tool point that is positioned on the distal end of the shaft and includes a rigid cutting part and a cutting part that can slide with respect to the rigid cutting part, and with a handle positioned on the proximal end of the shaft, such that the displaceable cutting part and the handle are operatively connected with one another by a push/pull device that is displaceably mounted in the hollow shaft and an anti-tilt mechanism is positioned on the tool point to stabilize the cutting parts in their axially parallel alignment to one another. The rigid cutting part includes a sleeve-shaped proximal portion that encloses the displaceable cutting part and a distal punch portion configured as a single unit with the sleeve-shaped portion and that the rigid cutting part should be detachably connected with the hollow shaft by a coupling mechanism formed on the sleeve-shaped portion.
摘要:
A medical access device for creating an access to a body for minimally invasive intervention has a hollow body assembled from at least two parts having longitudinal extending edges. Each part has a distal body portion and at an angle to the latter a proximal body portion. A locking mechanism locks the assembled proximal hollow body portions. The locking mechanism has a hook projecting from an edge of a proximal body. A nose of the hook can enter from proximal to distal in a recess in an edge joining said edge having said hook.
摘要:
A medical instrument has a cannula, a seal disposed in the cannula. An expansion device serves for expanding the opening in the seal for guiding shafts of other instruments of greater diameter in a sealed manner through the expanded opening. The expansion device has an expansion cone with a plurality of slats mounted pivotably on an annular body at a first end thereof, a second end of the slats, being connected to the seal in an area of the opening. The slats can either be connected at its first ends to the annular body via spherical heads engaged into corresponding openings in the annular body or the slats are connected at their ends via film hinges to the annular body.