摘要:
The present invention provides a simple method for producing a dumbbell-shaped DNA.A method for producing a dumbbell-shaped DNA, wherein each of sense and antisense strands is connected at both the 5′ and 3′ ends of a linear-shaped double stranded DNA by a single stranded DNA of loop structure, comprising the steps of; 1) amplifying a target DNA in a template DNA by PCR using sense and antisense primers, wherein each of the sense and antisense primers contains the following sequence (a) at the 5′ end and also contains the following sequences (b), (c), and (d) in order from the 5′ end to the 3′ end, (a) a part of a sense sequence of a nickase recognition sequence, comprising the sequence of a region between the site where a nick is introduced by the action of a nickase and the 3′ end, (b) a sequence capable of forming a loop structure from a single strand, (c) the entire antisense sequence of the nickase recognition sequence (a), (d) a sequence complementary to all or part of the sequence of the target DNA; 2) treating the amplified DNA product of step 1) with a nickase of (a); 3) heating and then annealing the nickase treated amplified DNA product of step 2); and 4) treating the heated and annealed amplified DNA product of step 3) with DNA ligase, wherein the sense and antisense primers used in step 1) are phosphorylated at the 5′ end, or the amplified DNA product is phosphorylated at the 5′ end after step 1) but before step 4).
摘要:
The present invention provides a stator coiled in a spiral, capable of mechanically inserting a wound coil in the slot of a stator core. In a stator in which coils are overlapped in a spiral when viewed from the end surface of the stator core after each of one sides of a plurality of coils wound in advance is inserted in the slot of the stator core and each of the other sides of the plurality of coils is inserted in a different slot, by repeating the inserting operation twice or more, the loop of the coils overlapped in a spiral are piled in two layers or more in the radius direction of the stator core and the total coil sectional area inserted in the slots of the stator core is larger than a prescribed value based on the inside radius of the stator core.
摘要:
An electrode for a lithium battery having a thin film composed of active material capable of lithium storage and release, e.g., a microcrystalline or amorphous silicon thin film, provided on a current collector, the electrode being characterized in that a constituent of the current collector is diffused into the thin film.
摘要:
The present invention provides a simple method for producing a dumbbell-shaped DNA.A method for producing a dumbbell-shaped DNA, wherein each of sense and antisense strands is connected at both the 5′ and 3′ ends of a linear-shaped double stranded DNA by a single stranded DNA of loop structure, comprising the steps of; 1) amplifying a target DNA in a template DNA by PCR using sense and antisense primers, wherein each of the sense and antisense primers contains the following sequence (a) at the 5′ end and also contains the following sequences (b), (c), and (d) in order from the 5′ end to the 3′ end, (a) a part of a sense sequence of a nickase recognition sequence, comprising the sequence of a region between the site where a nick is introduced by the action of a nickase and the 3′ end, (b) a sequence capable of forming a loop structure from a single strand, (c) the entire antisense sequence of the nickase recognition sequence (a), (d) a sequence complementary to all or part of the sequence of the target DNA; 2) treating the amplified DNA product of step 1) with a nickase of (a); 3) heating and then annealing the nickase treated amplified DNA product of step 2); and 4) treating the heated and annealed amplified DNA product of step 3) with DNA ligase, wherein the sense and antisense primers used in step 1) are phosphorylated at the 5′ end, or the amplified DNA product is phosphorylated at the 5′ end after step 1) but before step 4).
摘要:
Provided are a winding method and a winding apparatus in which it makes possible to expedite the winding cycle with a relatively simple construction.In a winding method in which a plurality of conductor wires are arranged in parallel and wound around a reel to form a coil, which is dropped into a coil receiving jig, the plurality of conductor wires are temporarily wound around a bobbin, and the bobbin is attached to a flyer of a winding apparatus. The flyer is rotated to wind the plurality of conductor wires around the reel while drawing them out of the bobbin.
摘要:
An automatic machine and method of winding of armatures having maximum coil density because the winding nozzle does not enter into the slots between the pole teeth and the wire is restrained at at least one the ends of the core portion of the armature to facilitate winding.
摘要:
Armature structures and methods that provide very dense coil windings and afford very rapid winding methods at a relatively low cost. In addition the likelihood of damaging the already wound wires by contact with the winding nozzle is substantially eliminated. This is achieved by moving the winding needle in varying distances and directions away from the pole teeth to induce varying degrees of slack in the wire during the winding and when the needle is not in the slot between the pole teeth.
摘要:
A sweep termination generating circuit adopts an octagon boundary for sweep termination which is set by combining a plurality of comparators so as to be circumscribed about the display screen of a circular CRT. When the sweep position is deviated from the center of the display screen for the purpose of displaying a radar image by PPI sweep, the circuit allows the comparators to detect that a scanning signal for scanning an electron beam from the off-center sweep position has reached the boundary for sweep termination and thereby generates a sweep termination signal.
摘要:
A fluid compressor comprises a cylinder block, a driving shaft rotatably mounted in the cylinder block by means of thrust bearings and radial bearings, an inclined disk rigidly secured to the driving shaft, pistons slidably disposed in cylinder bores formed in the cylinder block, and shoes for operably connecting the inclined disk to the pistons, which are reciprocally moved in the cylinder bores when the inclined disk is rotated to pressurize gaseous fluid for cooling. In order to accommodate the inclined disk, the cylinder block has a housing, which is provided with recesses or grooves on the opposite axial end surfaces to catch the lubrication oil flowing along the inner wall of the housing. Oil ports or passages are also provided for introducing the oil from the recesses or grooves to the radial bearings. Sliding bearings may be used as the radial bearings. Such a sliding bearing may be provided with an oil guide groove or ball indents on the inner peripheral wall thereof.
摘要:
A composite material of a ferrous cladding material and an aluminum cast matrix which composite material exhibits excellent performance and a method for producing the same which can be carried out quite easily. The composite material comprises a ferrous cladding material, powder particles bonded to the ferrous cladding material, seizing portions defined by the powder particles, and a cast matrix of aluminum or its alloy held by the seizing portions. The method comprises the steps of spreading powder particles over a ferrous cladding material, bonding the powder particles to the ferrous cladding material by sintering, and casting aluminum or its alloy over the sintered surface. Further, a metallic layer can be formed between the bonded powder particles and the cast aluminum, by plating.