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61 条记录 (耗时 0.016 秒)

    Novel herbicidally active, nuclear-substituted phenoxy-phenoxyalkanecarboxylic acid derivatives and use thereof for controlling grass-like weeds
    15.
    发明授权
    Novel herbicidally active, nuclear-substituted phenoxy-phenoxyalkanecarboxylic acid derivatives and use thereof for controlling grass-like weeds 失效
    新型除草活性的核取代苯氧基 - 苯氧亚硬脂酸衍生物及其用于控制​​草类杂草的用途

    公开(公告)号：US4205978A

    公开(公告)日：1980-06-03

    申请号：US915491

    申请日：1978-06-14

    申请人： Otto Rohr ,  Georg Pissiotas ,  Beat Bohner

    发明人： Otto Rohr ,  Georg Pissiotas ,  Beat Bohner

    IPC分类号： C07C205/59 ,  C07C205/60 ,  A01N9/24 ,  C07C79/46

    CPC分类号： C07C205/60 ,  C07C205/59

    摘要： The invention is concerned with new herbicidally active 4-phenoxy-.alpha.-phenoxy-alkanecarboxylic acid derivatives, especially propionic acid esters of the type ##STR1## bearing in the first phenoxy radical a nitro group besides another substituent R.sub.1 which is preferably a halogen atom, the CF.sub.3 group is lower alkyl, alkoxy or alkoxycarbonyl group. The invention is further concerned with herbicidal compositions containing such new derivatives and with methods for the selective control of grass-like weeds in crops of dicotyledonous and monocotyledonous cultivated plants such as cereals.

    摘要翻译： 本发明涉及新的除草活性的4-苯氧基-α-苯氧基 - 链烷羧酸衍生物，特别是在第一个苯氧基中含有硝基的丙酸酯，除了另外的优选卤素原子的取代基R1外， CF 3基团是低级烷基，烷氧基或烷氧基羰基。 本发明还涉及含有这种新衍生物的除草组合物，以及用于选择性地控制双子叶植物和单子叶栽培植物如谷物的草类杂草的方法。

    Fuel element with burnable poison within the cladding
    19.
    发明授权
    Fuel element with burnable poison within the cladding 失效

    公开(公告)号：US3103476A

    公开(公告)日：1963-09-10

    申请号：US77765358

    申请日：1958-12-02

    IPC分类号： C07C201/12 ,  C07C205/26 ,  C07C205/37 ,  C07C205/59 ,  C07C205/60 ,  G21C3/06 ,  G21C7/04 ,  G21C7/22

    CPC分类号： G21C3/06 ,  G21C7/04 ,  G21C7/22 ,  Y02E30/39

    摘要： 913,655. Controlling reactors. BABCOCK & WILCOX CO. March 16, 1959 [March 14, 1958], No. 8969/59. Class 39 (4). A water moderated reactor is controlled by a combination of absorber rods, burnable poison in the fuel elements, and soluble poison in the moderator. Fig. 1 shows a P.W.R. 10 with rods 11 of B, Hf, stainless steel, or an alloy of cadmium, indium and silver. The moderatorcoolant circuit includes a pressurizer 12, a steam generator 14, and pumps 16. Boric acid solution may be added up to 21 gm./litre from a tank 202, and removed by an anion exchanger 226, or by an evaporator 230 after fission products have been removed in a cation exchanger 228. Each fuel element includes 500 p.p.m. of boron in its Zircaloy 2 sheath 94 or 200 p.p.m. mixed with the fuel; Eu may also be used. The sheaths contain fuel pins 98, comprising highly enriched UO 2 -ThO 2 pellets in stainless steel cladding, mounted in grids; the pins contain heat transfer fluid such as He, Pb, Na. The sheaths fit in support grids with sprung adapters, and their sides are recessed at 94B to leave cruciform spaces for the control rods 128. Fuel elements in the centre of the core contain 5.3% UO 2 , those outside 6.6% UO 2 , the balance being ThO 2 . The pressure vessel is of stainless steel-lined carbon steel surrounded by steel wool and a tank of water, and contains the core supported between grids and enclosed by three steel thermal shields. Specifications 775,151, 775,156, 913,653, 913,654 and U.S.A. Specifications 2,708,653, 2,735,811, 2,756,857 and 2,798,847 are referred to.