35 results about "Balanus" patented technology

The invention discloses a method for culturing cyprids of balanus reticulates on a large scale, which comprises the following steps: after ovum of the balanus reticulates is bred into naupliar larva, putting the naupliar larva into a culture medium with bait for constant temperature culture in dark environment; performing intermittent lighting on the naupliar larva in the constant temperature culture process; and performing cold storage on the appeared cyprids. The method can overcome the defects of high death rate, small and unstable yield, quick settlement and metamorphosis processes, incapacity of storage and accumulation and the like in the breeding process of the cyprids, greatly improve the yield of the cyprids, effectively prolong the time of a drifting stage of the cyprids, promotethe settlement synchrony of the cyprids, and provide required experimental materials for screening marine fouling organism antifouling compositions and studying environmental toxicology, along with wide application prospect.

The invention relates to the field of anti-fouling agent, specifically a novel diterpene compound kalihinol which is acquired by extracting from South China Sea sponge Acanthella caveronosa and a use thereof. The diterpene compound kalihinol has a structure shown as the formula (I). The compound can remarkably restrain barnacle Balanus amphitrite larva adsorption, which indicates that the compound has remarkable fouling resistance activity through in vitro barnacle Balanus amphitrite larva adsorption resistance activity test. Therefore, the diterpene compound kalihinol can be used for preparing a novel anti-fouling agent. The invention provides a novel source for preparing an environment-friendly high-efficient anti-fouling agent.

The invention relates to a Scalarane type sesterterpene and a preparation method thereof, and an application of the Scalarane type sesterterpene as a marine antifouling agent. During preparation, 95% ethanol is adopted to extract Carteriospongia foliascens; the resulting extracting solution is concentrated, and then extracted with an organic solvent; the resulting extracted solution is concentrated, and then is subjected to normal and reversed phase silica gel column chromatography, Sephadex LH-20 gel column chromatography, and semi-preparative high-performance liquid chromatography; and the resulting eluent is concentrated to obtain a colorless crystal, wherein the crystal is a compound carteriofenone D. The Scalarane type sesterterpene prepared from the Carteriospongia foliascens in the present invention has strong antifouling (Balanus amphitrite) activity, can be used for development of the marine antifouling agent, and has broad application prospects.

Disclosed is a safety device for a disposable circumcision anastomat, comprising a safety block (5), a sleeve (6), a push block (4), a balanus cover (1) and an adjustment screw (7), wherein a top slot (6-1) is provided on the sleeve (6), a square slot (4-1) is provided on the push block (4), a short pipe is provided at the back of the balanus cover (1), a scale (1-1) is provided on the short pipe, internal threads are provided inside the short pipe, the balanus cover (1) is mounted in a needle cartridge sheath (2), the short pipe provided at the back of the balanus cover (1) is connected to the adjustment screw (7), the back end of the needle cartridge sheath (2) is connected to the front end of the sleeve (6), the push block (4) is mounted in the sleeve (6), the safety block (5) is mounted in the top slot (6-1) on the sleeve (6), and the safety block (5) is jammed and inserted in the square slot (4-1) on the push block (4) through the top slot (6-1) on the sleeve (6). The safety block (5) has a safety inserting block (5-1) and a handle (5-2) is provided at the upper part of the safety inserting block (5-1). The safety device has a reasonable design, a simple structure, is convenient to use, and can effectively prevent mistakenly firing when an operator is operating the device; and the device can be adjusted to the best firing state via the scale (1-1) at the rear end of the balanus cover (1) and then the operator may fire, thus reducing the requirements of the surgical experience of the operator and improving the success rate of the surgery.