摘要:
A method for treating synthetic pulp particles, which includes treating a slurry of synthetic pulp particles having a Schopper-Riegler freeness of more than 30.degree.SR by a concentration provided with a rotary filter bed to lower the freeness not more than 30.degree.SR, water-washing the synthetic pulp particles in the state where the freeness is not more than 30.degree.SR, and dispersing the synthetic pulp particles in water to restore the freeness to more than 30.degree.SR.
摘要:
To provide an electronic dictionary that stylizes the display based on data pertaining to the number of times and frequency with which a search is performed, thereby making it easy to use, and to provide an electronic dictionary that can be used by a plurality of users. The device comprises a keyboard 1a and a mouse 1b, a dictionary memory 6 for storing text electronically, mark files 7-1, . . . , 7-n which store attribute data relating to text that has been searched for one or more times in the dictionary memory 6, a display component 5 for displaying text that has been searched for, and a CPU 3 for displaying searched for text in the display area 5 while changing the color based on the attribute data from the mark file 7 and for searching the dictionary memory 6 upon receiving an output signal from the input method 1a or 1b.
摘要:
An apparatus for cell culture by perfusion comprising a cell culture tank for suspension culture, said cell culture tank having a suspension cell culture zone, a cell settling zone, an opening for discharging a spent culture medium from the settling zone and an opening for supplying a culture medium to the suspension culture zone, the suspension culture zone and the setting zone being separated by a partition therebetween in a manner to communicate with each other in the lower portion of the settling zone, and the settling zone being formed between the side wall of the cell culture tank and the partition. Another type of apparatus for cell culture having a unit in which main culturing and settling are carried out in a cell settling zone, and a multiunit cell culture apparatus having at least two culturing units which are stacked longitudinally are also described. A method for culturing cells by perfusion in the culture apparatus which comprises withdrawing a substantially cell-free culture medium from the settling zone and introducing a fresh culture medium into the suspension culture zone.
摘要:
A highly pure borate complex of a trialkylborane with an alkylated or arylated alkali metal is obtained by reacting an aryl magnesium halide with a boron trihalide to produce a triarylborane product. The triarylborane product is then subjected to thorough removal of magnesium salts produced as by-products and removal of unreacted aryl magnesium halide. A solution of alkylated or arylated alkali metal in a hydrocarbon solvent, a straight chain ether solvent or a mixed solvent thereof is then added dropwise to the solution of triarylborane product in a hydrocarbon solvent, straight chain ether solvent or mixed solvent thereof, while keeping the temperature range from -80.degree. to 25.degree. C.
摘要:
Disclosed is a production method, wherein, with pentafluorobenzene represented by C.sub.6 HF.sub.5, 0.5 to 1.5 equivalents of organometallic compound represented by a general formulaR.sub.2-n MgXn(wherein n denotes a real number of 0 or 1, X denotes a halogen atom, R denotes a hydrocarbon group with carbon atoms of 1 to 10, and said hydrocarbon group may contain functional groups unaffecting the reaction) are mixed within a temperature range from -40.degree. to 250.degree. C. in an ether type solvent or a mixed nonaqueous solvent of ether type solvent with hydrocarbon type solvent and reacted at 25.degree. C. or higher to obtain pentafluorophenylmagnesium derivatives represented by a following general formula(C.sub.6 F.sub.5).sub.2-n MgXn(wherein n denotes a real number of 0 or 1 and X denotes a halogen atom).
摘要翻译:公开了一种制备方法,其中使用由C 6 H F 5表示的五氟苯,0.5-1.5当量的由通式R2-nMgXn表示的有机金属化合物(其中n表示实数0或1,X表示卤素原子,R表示 碳原子数为1〜10的烃基,所述烃基可以含有不受反应的官能团)在-40〜250℃的温度范围内在醚型溶剂或醚型混合非水溶剂中混合 溶剂与烃型溶剂反应,并在25℃或更高温度下反应,得到由以下通式(C6F5)2-nMgXn表示的五氟苯基镁衍生物(其中n表示0或1的实数,X表示卤素原子)。
摘要:
The present invention relates to novel vitamin D.sub.3 derivatives which have a carboxyl group or its ester group at the 22-position, processes for the preparation thereof, and antigens, which comprise said vitamin D.sub.3 derivative and an immunogenic carrier material, to be used for the preparation of antibodies for enzymeimmunoassay or radioimmunoassay and antibodies obtained therefrom.The determination of such activated vitamin D.sub.3 compounds as 25-hydroxy vitamin D.sub.3, 24, 25-dihydroxy vitamin D.sub.3, etc. can be made satisfactorily according to the present invention.
摘要:
A fault diagnosis device and a fault diagnosis method read a diagnostic trouble code from an Electronic Control Unit to the fault diagnosis device, and display a work guide screen for guiding work in accordance with the read diagnostic trouble code. The work guide screen includes an entire work flowchart consisting of a plurality of work items for identifying a fault occurrence location at which the fault event corresponding to the diagnostic trouble code is caused, and includes an entire work display area in which a work item selected among the plurality of work items is highlighted and a concrete work display area in which concrete work details about the highlighted work item are indicated.
摘要:
The invention relates to a production method, wherein, with 1 equivalent of pentafluorobenzene of the formula C.sub.6 HF.sub.5 M, 0.5 to 1.5 equivalents of an organometallic compound of the formula RM, wherein R is a hydrocarbon group of 1 to 10 carbon atoms and m is an alkali metal ion, are reacted at -120.degree. to 80.degree. C. in an ether type solvent, a hydrocarbon type solvent or a mixed solvent of the ether type solvent with the hydrocarbon type solvent to generate a pentafluorophenyl alkali metal salt of the formula C.sub.6 F.sub.5 M. Next, 1 equivalent of a boron compound of the formula BX.sub.3, where X is halogen, OR or NR'R" is reacted with 2.1 to 3.9 equivalents of a pentafluorophenyl alkali metal salt of the formula C.sub.6 F.sub.5 M within a temperature range from -120.degree. to 80.degree. C. to produce tris(pentafluorophenyl)borane of the formula (C.sub.6 F.sub.5).sub.3 B or a complex of tris(pentafluorophenyl)borane coordinated with the ether type solvent.
摘要翻译:本发明涉及一种制备方法,其中使用1当量的式C 6 H 5 F 5的五氟苯,0.5至1.5当量的式R M的有机金属化合物,其中R为1至10个碳原子的烃基,m为碱 金属离子在-120至80℃下在醚类溶剂,烃类溶剂或醚型溶剂与烃类溶剂的混合溶剂中反应,生成式C 6 F 5 M的五氟苯基碱金属盐。 接下来,将1当量的式BX3的硼化合物(其中X是卤素,OR或NR'R“)与2.1至3.9当量的式C 6 F 5 M的五氟苯基碱金属盐在-120℃的温度范围内反应 至80℃以制备式(C6F5)3B的三(五氟苯基)硼烷或与醚类溶剂配位的三(五氟苯基)硼烷的络合物。
摘要:
A method of culturing animal cells, which comprises (A) subjecting living animal cells to suspension culture in a culture tank, (B) withdrawing a portion of a suspension culture fluid containing the living animal cells from the culture tank, (C) supplying the withdrawn suspension culture fluid to a centrifugal separating device which is operated under specific conditions and separating the living animal cells from the suspension culture fluid, (D) withdrawing the separated living animal cells from the centrifugal separating device, and (E) recycling at least a portion of the withdrawn living animal cells to the culture tank for the step (A).
摘要:
This invention relates to novel 25-hydroxy-24-oxocholestane derivatives and a process for preparing them.The novel 25-hydroxy-24-oxocholestane derivatives of this invention can easily be converted to 24,25-dihydroxycholecalciferol or 1.alpha.,24,25-trihydroxycholecalciferol which is known as useful for medicine controlling the calcium metabolism of warm-blooded animals. Moreover, 25-hydroxy-24-oxocholestane derivatives can be converted to novel 25-hydroxy-24-oxocholecalciferol expressed by the following formula ##STR1## and novel 1.alpha.,25-dihydroxy-24-oxocholecalciferol of the formula ##STR2## which are useful for medicine. The new 25-hydroxy-24-oxocholestane derivatives in the present invention are very useful as the intermediates for the synthesis of a variety of active vitamin D.sub.3.