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 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:
According to the invention, there can be provided a non-aqueous electrolyte secondary cell whose capacity is hardly decreased even stored at high temperatures in a charged state.The non-aqueous electrolyte secondary cell uses an insulation adhesive tape composed of a base material and a glue material. And in an absorbance spectra of the glue material measured using an infrared spectrophotometer so that the maximum peak intensity is 5 to 20% in transmittance, when peak intensities for C—H stretching vibration of 3040 to 2835 cm−1 and C═O stretching vibration of 1870 to 1560 cm−1 are respectively defined as I(C—H) and I(C═O), a peak intensity ratio represented by I(C═O)/I(C—H) is 0.01 or less.
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 lithium batteries, in which a thin film of active material capable of storage and release of lithium, such as a microcrystalline or amorphous silicon thin film, is provided, through an interlayer, on a current collector, the electrode being characterized in that the interlayer comprises a material alloyable with the thin film of active material.
摘要:
A rechargeable lithium battery including a negative electrode made by depositing a noncrystalline thin film composed entirely or mainly of silicon on a current collector, a positive electrode and a nonaqueous electrolyte, characterized in that said nonaqueous electrolyte contains carbon dioxide dissolved therein.
摘要:
A magnetostrictive device for a torque sensor which has a high sensor sensitivity whether the excitation frequency is in a high frequency range or in a low frequency range and can withstand excess load torques well, and also a method of easily manufacturing the device. In manufacturing the magnetostrictive device 1 for a torque sensor, which has a magnetic anisotropic portion 15 formed on the surface of a shaft body 10 thereof, the method of forming the magnetic anisotropic portion 15 comprises the steps of: forming spiral grooves in the surface of the shaft body 10 to form a plurality of troughs 16 and ridges 17 alternately; and directly applying a compressive stress only to the ridges 17 to cause deformations accompanied by plastic flow and to provide an almost planar plateau portion 171 at a crest portion of each of the ridges 17.