摘要:
A closure for a cooling container opening having a predefined opening diameter, particularly a cryotank (1). According to the invention, a closable extraction opening (9) for introducing items that are to be cooled into the cooling container (1) and/or for extracting cooled items from the cooling container (1) is arranged inside the closure. The diameter of the extraction opening (9) is smaller than the diameter of the cooling container opening.
摘要:
The invention relates to a sample collection method, in particular for obtaining early infection blood samples from freshly infected patients in the diagnostic interval of an antibody-based HIV test. The method comprises the following steps: first biological samples are drawn from a plurality of living beings (3-7) in a sample; said samples are subjected to analysis using a first diagnostic test for a specific substance of interest; the living beings (3-7) that have tested positive are excluded from the sample; at least the samples that have tested negative are preserved; after a specific waiting period, second biological samples are drawn from the living beings remaining in the sample (3-7); said samples are subjected to analysis using a second diagnostic test for the substance of interest; and finally the cryopreserved samples of those living beings (3-7), with first negative and then positive tests are selected. The invention also relates to a suitable sample collection device.
摘要:
The invention relates to a cryo-device which is used to freeze and defrost a sample (1), in particular during the cryo-conservation of a biological sample (1), comprising a coolable cooling chamber (3) and a sample container (10) which is arranged in the cooling chamber (3) and which is used to provisionally receive the sample (1) during freezing or defrosting thereof (1). According to the invention, the sample container (10) can be tempered separately from the cooling chamber (3). The invention also relates to an associated operational method.
摘要:
The invention relates to a sample holding device (100), particularly for cryopreserving at least one sample, which has a bundle (10) consisting of a multitude of tubular flexible sample compartments (11, 12, ) and a retaining device (20), to which the bundle (10) of sample compartments is connected. The retaining device (20) has a multitude of retaining frames (21, 22, ) that are arranged in a longitudinal direction of the bundle (10).
摘要:
A dielectric motor driven by electric fields comprises two or more dielectic rotors arranged in a central region surrounded by several electrodes. The rotors can be made of different dielectric materials and can be designed so that they are rotationally asymmetrical electrically. They are driven by continuously or discontinuously rotating electric fields. Depending on the geometry and electrical design, it is possible to obtain very varied rotational conditions which can be simply controlled by varying the frequency of the rotating fields. The motor is suitable for switching and driving purposes and can be used in the construction of microdosing devices, pumps and valves.
摘要:
Selon un procédé de manipulation de particules diélectriques de dimensions microscopiques, les particules sont exposées à un champ électrique. Selon des procédés connus, les particules sont exposées à des champs électriques inhomogènes et sont polarisées par ceux-ci. Les particules polarisées se déplacent dans la direction où l'intensité du champ est la plus élevée. Ces procédés ne permettent pas de renverser le sens de déplacement des particules. Les particules s'enrichissent au niveau de l'électrode, de sorte qu'elles ne peuvent pas être retenues dans un espace libre. Selon le procédé décrit, les particules sont exposées à un ou plusieurs champs de haute fréquence se déplaçant dans des directions prédéterminables, de sorte qu'une force est exercée sur les particules qui les met en un mouvement fortement asynchrone par rapport au champ. Un dispositif de mise en oeuvre de ce procédé permet de manipuler des particules avec beaucoup de souplesse. Des électrodes agencées en ligne ou en cercle permettent de déplacer les particules sur des voies linéaires dans toutes directions voulues ou à travers des microstructures ramifiées; elles peuvent être triées selon leurs propriétés diélectriques et retenues sans contact. L'invention trouve des applications sans le domaine de la biotechnologie et des techniques de microtransport, de focalisation et de triage moléculaires.
摘要:
A dielectric micromechanical element has a mobile part (2) (hereafter referred to as the rotor) which is an electrically homogeneous or inhomogeneous dielectric. Fields of application are microelectronics, micromechanics, etc. This part (2) is driven by one or more electric field vectors which are produced via electrode arrangements by means of switched voltages and/or by driving the electrodes (4a-h) with phase-shifted voltages. The electrodes (4a-h, 5a-h) are disposed in a linear or curved row on at least one side of the rotor (2) and/or in the interior of the rotor (2). One or more electrodes (4a-h, 5a-h) can be designed as common counter electrodes for one or more single electrodes.
摘要:
The invention relates to a cryogenic container being suitable for the storage and provision of frozen particles, comprising a thermally insulated container element having at least one accommodation chamber for frozen particles, and at least one outlet opening, a locking device, by means of which the at least one outlet opening can be closed, at least one opening element, which can be actuated in order to open the outlet opening, thus providing the frozen particles outside of the outlet opening, and an insulation element for the thermal insulation of the closing device. The invention further relates to a depot for providing frozen particles for a deposition device, a deposition device having a depot, and a method for providing frozen particles for a deposition.