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198 results about "Human chorionic gonadotropin" patented technology

Human chorionic gonadotropin (hCG) is a hormone produced by the placenta after implantation. The presence of hCG is detected in some pregnancy tests (HCG pregnancy strip tests). Some cancerous tumors produce this hormone; therefore, elevated levels measured when the patient is not pregnant may lead to a cancer diagnosis and, if high enough, paraneoplastic syndromes, however, it is not known whether this production is a contributing cause, or an effect of carcinogenesis. The pituitary analog of hCG, known as luteinizing hormone (LH), is produced in the pituitary gland of males and females of all ages.

Breeding method of loach

The invention discloses a breeding method of the loach, which can be used for improving the spawning expediting rate and the fertilization rate of the loach and the livability of the loach seedlings. The breeding method of the load comprises the steps of: a. respectively breeding the male loach and the female loach a half month before spawning expediting; b. adding a biological odinagogue into forage one week before spawning expediting, wherein the biological odinagogue specifically comprises 15-20g of Chinese angelica, ligusticum wallichii, folium artemisiae argyi, andrographis paniculata, rehmanniae vaporata and compound vitamins respectively, and the adding quantity is that 5-10g of the biological odinagogue is added into each kilogram of the forage, and continuously feeding the forage which is added with the biological odinagogue for 7 days; and c. making sets according to the proportion that the ratio of the female loach to the male loach is 1:1.5, and injecting 100-150 international units of HCG (human chorionic gonadotropin) into each loach. The breeding method has the beneficial effects that the female loach and the male loach are synchronously estrous after the breeding method is used, so that the spawning expediting rate and the fertilization rate of the loach are greatly improved. After a preferable mode of the breeding method is adopted, the cost can be reduced when the seedlings are bred, and the bait with an enough quantity can be timely provided, so that the livability of the loach seedling is guaranteed, and the large-scale production is realized.
Owner:SICHUAN YINGJIE SCI & TECH DEV

Novel synthesis method for multilayer protection hyperstable water-soluble single fluorescent quantum dot and fluorescent microsphere

The invention relates to a novel synthesis method for a multilayer protection hyperstable water-soluble single fluorescent quantum dot and a fluorescent microsphere. The method comprises the following steps: transferring an oil-soluble fluorescent quantum dot to a water phase by using an amphoteric oligomer; then wrapping a water-soluble single fluorescent quantum dot and a fluorescent microsphere in silica; allowing the surfaces of the single fluorescent quantum dot and the fluorescent microsphere wrapped by silica to carry hydrophobic groups; and finally preparing the multilayer protection hyperstable water-soluble single fluorescent quantum dot and the fluorescent microsphere by using the amphoteric oligomer again. With the method, the fluorescent quantum dot can be protected from a destructive effect of an external environment (e.g., a strong acid, a strong alkali, a salt, etc.) to a greatest extent. The multilayer protection hyperstable water-soluble single fluorescent quantum dot and the fluorescent microsphere can be used in a microporous immunostrip biological detection system for detection of human chorionic gonadotropin (HCG), human immunodeficiency virus (HIV), hepatitis and clenbuterol--ractopamine(Rac) residual and the like in swine urine.
Owner:HENAN UNIVERSITY

Artificial propagation method for Taiwan mud fishes

The invention discloses an artificial propagation method for Taiwan mud fishes and belongs to the propagation technologies for fresh water mud fishes. The method includes the following steps that (1), parent mud fish fries are selected; (2), artificial spawning induction is performed; (3), artificial fertilization is performed; (4), hatching is performed. According to the technology, the method that human chorionic gonadotropin (HCG), hypophyses or luteotropin releasing hormone d-ala analogs and other spawning induction medicine are injected to the backs of the parent mud fishes is adopted, so that the spawning induction rate of the parent mud fishes is increased over 91.0%; according to the technology, the fertilization rate of the parent mud fishes is increased over 96.6% through artificial fertilization, and the hatching rate of the parent mud fishes is increased over 98.0% through still water hatching; the survival rate of the parent mud fishes after artificial propagation reaches 90.9%. Propagation is performed by the utilization of the method, so that the survival rate, the spawning induction rate, the fertilization rate and the hatching rate of the Taiwan mud fishes are much higher than the corresponding rates through natural propagation and traditional propagation method for the mud fishes, industrialized production of the Taiwan mud fishes can be achieved, the fries are provided for large-scale farming, and high economical benefits are obtained.
Owner:FOSHAN DUNHUANG AQUACULTURE

Artificial eel propagation method

InactiveCN102511424ALower dose of steroid injectionsOptimize the selection processClimate change adaptationPisciculture and aquariaAnimal sciencePituitary gland
The invention relates to an artificial eel propagation method, which includes: a, ripening parent fishes, breeding catadromous parent reels for seven days, gradually increasing salinity of water, and subjecting the parent eels to back intramuscular injection of ripening agent-carp pituitary gland homogenate and HCG (human chorionic gonadotropin); b, performing induced spawning of the parent eels, subjecting female eels to injection of oxytocin 17 alpha-hydroxyl progesterone and HCG, subjecting sperm-producing male eels to injection of mixture of CPE (carp pituitary extract) with HCG, collecting naturally spawned fertilized eggs on the next day, and subjecting the female eels laying no eggs to semi-dry artificial insemination; and c, hatching the fertilized eggs, immediately transferring the fertilized eggs to a special-made hatching barrel for hatching, and slightly aerating, changing half of water every four hours until fry are hatched successfully. The artificial eel propagation method has the advantages that anesthetic loss and operational injury can be prevented, injection dosage of hormones is reduced, a great amount of eels can mate and lay eggs naturally under artificial induced spawning, artificial insemination can be complete securely in a planned way, level of high-quality fertilized eggs and alevin of eels artificially propagated is increased.
Owner:SHANGHAI OCEAN UNIV

Artificial propagation method of esox reichertii

InactiveCN103222436AShorten spawn timeMature syncClimate change adaptationPisciculture and aquariaBroodstockEsox
The invention discloses an artificial propagation method of esox reichertii, belongs to the cultivation filed of the esox reichertii, and is mainly used for solving the technical problems that the existing natural egg-laying process of the wild esox reichertii is unfocused in egg-laying time, long in egg-laying period, non-synchronous in maturity of male and female parent fishes and low in hatching rate. The artificial propagation method of the esox reichertii comprises the following steps of: sorting parents; and carrying out artificial impregnation after injecting the medicine twice by S-GnRH (gonadotropin releasing hormone)-A, HCG (Human Chorionic Gonadotropin) or DOM (Dimethoxy Mephentermine) in April, so that the artificial propagation of esox reichertii is completed. The artificial propagation method of the esox reichertii disclosed by the invention can be used for enabling the maturity of male and female parent fishes to be synchronous, enabling the egg-laying time to be focused and shortening the egg-laying period by 15-20 days, and also has a fertility rate of 85%-90% and a hatching rate of 60%-70%. The parent fishes are propagated artificially, the propagation success rate of male fishes is 97% and the propagation success rate of the female fishes is 70%-85%.
Owner:HEILONGJIANG RIVER FISHERY RES INST CHINESE ACADEMY OF FISHERIES SCI

Female ovulation and pregnancy detection method

The invention relates to a method for detecting female ovulation and pregnancy, and discloses a female ovulation and pregnancy detection method. The detection method comprises the following steps: by virtue of a detection unit (10), detecting a temperature value of urine which is just discharged out of a woman, a change value of female body temperature in an ovulatory period as well a luteinizing hormone concentration value and a human chorionic gonadotropin concentration value in urine which is discharged in the ovulatory period every day; collecting a picture of a piece of pregnancy test paper by virtue of the detection unit (10), conducting color recognition on the picture, and finally, calculating a chromatic value of the color; saving the urine temperature value, the body temperature value within the ovulatory period, the chromatic value on the pregnancy test paper, the luteinizing hormone concentration value and the human chorionic gonadotropin concentration value in a first memory; transmitting the saved data to a processor by virtue of the first memory, and comparing the new data with historical data so as to determine an ovulation time and a pregnancy situation. With the implementation of the detection method disclosed by the invention, the ovulatory period can be precisely detected, so that people can prepare for pregnancy conveniently; and meanwhile, the pregnancy situation of the woman can be accurately judged as well.
Owner:杭州恒奥科技有限公司
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