摘要:
Described is the use of the promoter region of the DefH9 gene of Anthirrhinum majus or of a promoter of a homologous gene displaying the same expression pattern and characteristics for the establishment of parthenocarpy or female sterility in plants, for increasing gynogenesis or for enhancing fruit setting and development. Also described are recombinant DNA molecules comprising a DefH9 promoter in combination with a DNA sequence which upon expression in plants leads to the above mentioned effects. Furthermore, described are plant cells and plants transformed with such recombinant DNA molecules.
摘要:
A method and apparatus for the production of napped surfaces that are textured lightly and irregularly. The surface of a substrate is coated with an adhesive and then covered with short textile fibers to form a layer of nap. After the adhesive hardens, the nap layer is subjected to mechanical deformation by permitting a plurality of balls made of a resilient material to bounce on the layer. The apparatus includes a panel of backing material support for the substrate, such as a panel of material which is to be treated and which already has a nap layer on its surface. Below the support is disposed a vibrator mechanism which causes the support together with the panel of material disposed thereon to vibrate. Above the support and the panel of material disposed thereon, there is a treatment chamber having lateral partitions and an impact ceiling. Within the treatment chamber there is a plurality of balls made of a resilient material.
摘要:
This invention relates to a process for preparing swellable cross-linked carboxyalkylcelluloses by reacting cellulose, a carboxyalkylating etherifying agent, and a cross-linking agent in an aqueous alkaline medium, comprising effecting alkalizing, etherifying, and cross-linking simultaneously in one reaction step using fibers, textile sheet materials containing these fibers, or sheet materials of other kinds, having a base of cellulose hydrate or of natural cellulose, by contacting said fibers or sheet materials with an ample quantity of an aqueous alkaline reaction mixture, removing part of the reaction mixture from the fibers or sheet materials contacted therewith, so that at least the quantity required for reaction is still present, and treating the fibers or sheet materials containing the remainder of the aqueous alkaline reaction mixture with heat energy. The invention also relates to equipment for performing the process.
摘要:
In a working method for a cleaning device (2) that moves back and forth in a swimming pool (1), control thereof is such that the cleaning device (2) moves from a starting position at a low speed in a forward direction V in a first pass in a first cleaning path (4) until it runs up to a pool wall (3), wherein the distance D1 traversed along the first cleaning path is measured or determined, the cleaning device (2) is then guided to a second cleaning path (5) deviating from or offset relative to the first cleaning path (4) in a second pass, initially at a low speed, whereupon the cleaning device then moves in a backward direction along the second cleaning path (5) at a high speed until the distance Dz traversed is smaller than the distance D1 traversed in the previous pass by an amount A, upon reaching distance Dz the cleaning device (2) continues to move along the second cleaning path (5) at low speed until it runs up to a swimming pool wall (3), wherein the distance D2 traversed along the second cleaning path is measured or determined, and the cleaning device (2) is controlled in the same manner in each subsequent pass as in the previous pass.
摘要:
Device for pickling (curing) pieces of meat in a continuous operation with a feeder which leads into the space of two injection needle cylinders which are driven about horizontal axes to pass on the material and stab with their injection needles into the passing-through pieces of meat and in the process inject pickling brine from a piping system provided in the interior of the injection needle cylinders.This device is improved in the respect that the required pickling brine can be injected quickly, and uniformly distributed as far as possible without losses. This is achieved by a special construction for controlling the inflow of the pickling brine from a hollow space between the hollow bodies of the needle cylinders and a stationary tube for feeding the pickling brine to the holes of the needles. The control is constructed so that only those needles which happen to penetrate into a piece of meat are connected to the hollow body which is filled with pickling brine under pressure.
摘要:
An adhesion assistant or binder composition for bonding polyolefin surfaces with metal surfaces comprising an aqueous dispersion of an ethylene/vinyl acetate copolymer from 0.5 to 5 parts by weight based on 100 parts of the copolymer of a cross-linking peroxide compound and from 1 to 10 parts by weight based on 100 parts of the copolymer of a low-molecular-weight 1,2-polybutadiene; as well as a process for producing composite bodies by heat and pressure utilizing the above adhesion assistant between polyolefin surfaces and metal surfaces.