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88results about How to "Efficient dosing" patented technology

Aryl substituted 3,4-dihydroanthracene derivatives having retinoid antagonist or retinoid inverse agonist type biological activity

InactiveUS7166726B2Susceptibility to treatmentReduce adverse effectsSenses disorderNervous disorderArylSilylene
Disclosed herein are compounds of the formula
wherein R1 is independently H or alkyl of 1 to 6 carbons;
  • R2 is optional and is defined as lower alkyl of 1 to 6 carbons, F, Cl, Br, I, CF3, fluoro substituted alkyl of 1 to 6 carbons, OH, SH, alkoxy of 1 to 6 carbons, or alkylthio of 1 to 6 carbons;
  • n is an integer of between 0 and 2;
  • o is an integer between 0 and 3;
  • R3 is hydrogen, lower alkyl of 1 to 6 carbons, F, Cl, Br or I;
  • R4 is heteroaryl or (R5)p-heteroaryl where the heteroaryl group is 5-membered or 6-membered and has 1 to 3 heteroatoms selected from the group consisting of O, S, and N;
  • p is an integer having the values of 0–5;
  • R5 is F, Cl, Br, I, NO2, N(R8)2, N(R8)CORO8, N(R8)CON(R8)2, OH, OCOR8, OR8, CN, COOH, COOR8, C1-10 alkyl, fluoro substituted C1-10 alkyl, C2-10 alkenyl having 1 to 3 double bonds, C2-10 alkynyl having 1 to 3 triple bonds, or a (trialkyl)silyl or (trialkyl)silyloxy group where the alkyl groups independently have 1 to 6 carbons;
  • A is (CH2)q where q is 0–5, C3-6 branched alkyl, C3-6 cycloalkyl, C2-6 alkenyl having 1 or 2 double bonds, or C2-6 alkynyl having 1 or 2 triple bonds;
  • B is hydrogen, COOH or a pharmaceutically acceptable salt thereof, COORO8, CONR9R10, CH2OH, CH2OR11, CH2OCOR11, CHO, CH(OR12)2, CHOR13O, COR7, CR7(OR12)2, CR7OR13O, or Si(C1-6alkyl)3;
  • R7 is C1-5 alkyl, C3-5 cycloalkyl, or C2-5 alkenyl;
  • R8 is C1-10 alkyl, C1-10 (trimethylsilyl)alkyl, or C5-10 cycloalkyl;
  • R9 and R10 are independently hydrogen, C1-10 alkyl, C5-10 cycloalkyl, phenyl or R12-phenyl;
  • R11 is C1-6 alkyl, phenyl, or R12-phenyl;
  • R12 is C1-6 alkyl; and
  • R13 is divalent alkyl radical of 2–5 carbons.
Owner:ALLERGAN INC

Automatic and accurate pesticide feeding device and method for agricultural UAV (unmanned aerial vehicle)

The invention relates to the technical field of agriculture, in particular to a pesticide spraying device and method, and particularly discloses an automatic and accurate pesticide feeding device and method for an agricultural UAV. The automatic and accurate pesticide feeding device for the agricultural UAV is characterized in that a first lifting unit is mounted on a trolley; a pesticide conveying box is arranged on the trolley, connected with the UAV and used for feeding pesticide to the UAV; a second lifting unit is connected with the first lifting unit, and a weighing unit is arranged on the second lifting unit; and a controller is used for controlling ascending and descending of the first lifting unit and the second lifting unit, receiving a signal of the weighing unit and controlling the pesticide conveying box to feed the pesticide to the UAV. According to the automatic and accurate pesticide feeding device, the accurate controlling of UAV dosage is achieved, the maximum take-off load is not exceeded when the pesticide is fed to the UAV, or fast and accurate feeding is realized according to a dosage requirement of accurate pesticide application, and the work efficiency of the UAV is improved; and further, the device can perform mobile operation, so that the problem that the carrying is inconvenient when the pesticide is fed to the UAV is solved.
Owner:BEIJING RES CENT FOR INFORMATION TECH & AGRI

System and method for enhanced nitrogen removal of sewage through denitrification

The invention relates to a system and method for enhanced nitrogen removal of sewage through denitrification. The system for enhanced nitrogen removal of sewage through denitrification comprises an anaerobic pool, an anoxic pool, an aerobic pool and a secondary sedimentation pool which are in successive connection. The system further comprises a control system, wherein the control system is connected with an aeration system and a carbon source feeding system; the control system controls the aeration of an aerator so as to allow the DO concentration of the aerobic pool to be 0.5 to 2.9 mg / L andthe ammonia nitrogen concentration of an effluent to be 0.5 to 1.5 mg / L; the carbon source feeding system comprises a nitrate nitrogen on-line monitor and a carbon source feeding device; the nitratenitrogen on-line monitor feeds a nitrate nitrogen concentration back to the control system; and when the nitrate nitrogen concentration of the effluent of the aerobic pool is higher than the set valueof 10 mg / L, the control system controls the carbon source feeding device to feed 5 to 7 units of a carbon source per unit of nitrate into the anoxic pool. According to the invention, intermittent aeration of a sewage treatment plant is realized, so the effluent stably reaches the standard, and energy consumption in aeration is saved; meanwhile, highly-efficient nitrogen removal is realized through accurate chemical feeding in an anoxic area by using the carbon source feeding system according to the nitrate nitrogen concentration of the effluent, so energy consumption in aeration can be saved,and the DO concentration of a reflux liquid is reduced; and the carbon source is accurately added according to the nitrate nitrogen concentration, so highly-efficient denitrification is realized, andthe cost of the carbon source is saved.
Owner:KUNMING DIANCHI WATER TREATMENT CO LTD
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