Abstract: The present invention provides skin equivalents comprising human epidermal stem cells which are specifically labeled. The labeling is carried out with a marker capable of labeling slowly proliferating cells, e.g. iododeoxyuridine or PKH26. Particularly, the invention provides skin equivalents comprising labeled epidermal stem cells. The invention also provides corresponding uses and methods of using such cultures, e.g. in the fields of research and medical treatment of skin diseases.

Abstract: The use in the medical-surgical field of biomaterials based on hyaluronic acid derivatives, optionally in association with natural, synthetic or semisynthetic biopolymers, for suppressing the angiogenic process associated with tumor proliferation (in primary and secondary tumors) is disclosed.

Abstract: The invention relates to a polymer substrate for cultivating tissue cells. The substrate is provided in form of an oxygen-permeable flat membrane, preferably with ultra-filtration properties, and has an optimized amine content of at least 10 nmole amine function per cm2 membrane. The substrate can be used to treat burns and other tissue defects. The substrate can be rapidly populated with cells, in particular with keratinozytes, and supports reorientation of the cells after the populated membrane is transferred to a wound or a dermis equivalent. The substrate can also be later easily detached from the newly formed tissue structure.

Abstract: The use in the medical-surgical field of biomaterials based on hyaluronic acid derivatives, optionally in association with natural, synthetic or semisynthetic biopolymers, for suppressing the angiogenic process associated with tumour proliferation (in primary and secondary tumours) is disclosed.

Abstract: An apparatus for controlling the operation of a revolving door, in which an electric motor provides an assistance mode which supplies assistance so that the manual force applied by a person to a panel of the revolving door is reduced by a .DELTA.v, and thus the person using the door need only apply a slight additional force.

Abstract: An operating method for a revolving door in which the peripheral velocity of the panels of the revolving door consists of a booster component provided by a drive motor and a force which must be applied to at least one of the panels of the revolving door.

Abstract: An electromechanically operated door having a control and regulation system for the door, the door for being driven by an electric motor, the movement of the door being controlled by sensors. The control and regulation system is equipped with a microprocessor control. In addition to the normal path of data to the microprocessor control, a dual redundancy is achieved, in that there is a safety monitoring system which receives the same safety-related information as the microprocessor control. This safety monitoring system, for its part, is capable of detecting a fault, i.e. if the microprocessor control system has not shut off the door, the door is shut off by the safety monitoring system, which for its part reports any faults which occur in the system to a fault detection unit, and here again, by means of a redundant shutdown unit, brings the connected motor and thus the door to an immediate stop.

Abstract: A belt or chain tension producing apparatus comprises a tension head engageable with a chain, belt or the like of a chain or belt drive and a tension piston on which the tension head is carried. The tension piston is guided longitudinally slidable in a guide body which is simultaneously a mounting element and is acted on by at least one tension spring engaged with it which is supported at its other end on the base of the guide body. In order to provide a particularly compact structure and thus also a more universal structure, at least a part of one side of the tension piston projects laterally from the guide body and the tension head is mounted laterally on a mounting surface on that projecting part. A recess may be provided in the tension head to better mount it on the tension piston.