Shanghai high-repetition-rate XFEL and extreme light facility (SHINE), the first hard XFEL based on a superconducting accelerated structure in China, is now under development at the Shanghai Institute of Applied Physi...Shanghai high-repetition-rate XFEL and extreme light facility (SHINE), the first hard XFEL based on a superconducting accelerated structure in China, is now under development at the Shanghai Institute of Applied Physics, Chinese Academy of Sciences. In this paper, power losses caused by trapped longitudinal high-order modes (HOM), steady-state loss, and transient loss generated by untrapped HOMs in the 1.3-GHz SHINE cryomodule are investigated and calculated. The heat load generated by resistive wall wakefields is considered as well. Results are presented for power losses of every element in the 1.3-GHz cryomodule, caused by HOM excitation in the acceleration RF system of the continuouswave linac of SHINE.展开更多
The superconducting spoke cavity has been proposed to accelerate the proton in the low energy section of high power proton linac for an Accelerator Driven Sub-critical System （ADS）. Considering that the High Order M...The superconducting spoke cavity has been proposed to accelerate the proton in the low energy section of high power proton linac for an Accelerator Driven Sub-critical System （ADS）. Considering that the High Order Modes （HOMs） in the superconducting cavity have far reaching influence on power dissipation and beam stability, the analysis of HOMs of the spoke cavity is needed. In this paper, we put emphasis on the analysis of HOMs of the spoke cavity and the HOMs coupler design.展开更多
In this paper,we discuss the structure of intuitionistic fuzzy(IF)homomorphisms,exact sequences and some other concepts in category of IF modules.We study on IF exact sequences and IF Hom functors in IFR-Mod and obtai...In this paper,we discuss the structure of intuitionistic fuzzy(IF)homomorphisms,exact sequences and some other concepts in category of IF modules.We study on IF exact sequences and IF Hom functors in IFR-Mod and obtain some results about them.If R is a commutative ring and 0→A~f→B~g→C is an exact sequence in IFR-Mod,where f is IF split homomorphism,then we show that Hom_(IF-R)(D,-)preserves the sequence for every D∈IFR-Mod.Also IF projective modules will be introduced and investigated in this paper.Finally we define product and coproduct of IF modules and show that if M is an R-module,A=(μ_(A),ν_(A))≤_(IF)M and e_(i)∈E(R)for any i∈I,then Hom(Пi2I 0IF Rei;A)=Πi2I Hom(0IF Rei;A).展开更多
[Objective] The aim was to establish more specific, sensitive, accurate and practical method to detect purity of Thai Hom Mali rice. [Method] RAPD method cooperated with two primers of KDML105 and RD15 was established...[Objective] The aim was to establish more specific, sensitive, accurate and practical method to detect purity of Thai Hom Mali rice. [Method] RAPD method cooperated with two primers of KDML105 and RD15 was established by feeling for the extraction methods of DNA, optimizing concentrations of the factors influencing the results of RAPD such as template DNA, Mg2＋, random primer, dNTPs and Taq polymerase, and screening the random primers. [Result] The optimum RAPD reaction system was 25.0 μl in total volume, containing 4.0-32.0 ng/μl of template DNA, 200.0 μg/L random primer, 2.0 mmol/L Mg2＋, 200.0 μmol/L dNTPs and 1.0 U of Taq enzyme. Then, the Thai Hom Mali rice and non-Thai Hom Mali rice can be distinguished according to the presence or absence of two DNA markers. [Conclusion] The RAPD technology can effectively cover the shortages of identifications by sense and boiling in water; in addition, it is simple, sensitive and low-cost, suitable to be used in routine tests.展开更多
基金supported by the Frontier Research of Large Science Installation(2016YFA0401902)the Youth Innovation Promotion Association CAS(No.2018300)
文摘Shanghai high-repetition-rate XFEL and extreme light facility (SHINE), the first hard XFEL based on a superconducting accelerated structure in China, is now under development at the Shanghai Institute of Applied Physics, Chinese Academy of Sciences. In this paper, power losses caused by trapped longitudinal high-order modes (HOM), steady-state loss, and transient loss generated by untrapped HOMs in the 1.3-GHz SHINE cryomodule are investigated and calculated. The heat load generated by resistive wall wakefields is considered as well. Results are presented for power losses of every element in the 1.3-GHz cryomodule, caused by HOM excitation in the acceleration RF system of the continuouswave linac of SHINE.
文摘The superconducting spoke cavity has been proposed to accelerate the proton in the low energy section of high power proton linac for an Accelerator Driven Sub-critical System （ADS）. Considering that the High Order Modes （HOMs） in the superconducting cavity have far reaching influence on power dissipation and beam stability, the analysis of HOMs of the spoke cavity is needed. In this paper, we put emphasis on the analysis of HOMs of the spoke cavity and the HOMs coupler design.
文摘In this paper,we discuss the structure of intuitionistic fuzzy(IF)homomorphisms,exact sequences and some other concepts in category of IF modules.We study on IF exact sequences and IF Hom functors in IFR-Mod and obtain some results about them.If R is a commutative ring and 0→A~f→B~g→C is an exact sequence in IFR-Mod,where f is IF split homomorphism,then we show that Hom_(IF-R)(D,-)preserves the sequence for every D∈IFR-Mod.Also IF projective modules will be introduced and investigated in this paper.Finally we define product and coproduct of IF modules and show that if M is an R-module,A=(μ_(A),ν_(A))≤_(IF)M and e_(i)∈E(R)for any i∈I,then Hom(Пi2I 0IF Rei;A)=Πi2I Hom(0IF Rei;A).
文摘[Objective] The aim was to establish more specific, sensitive, accurate and practical method to detect purity of Thai Hom Mali rice. [Method] RAPD method cooperated with two primers of KDML105 and RD15 was established by feeling for the extraction methods of DNA, optimizing concentrations of the factors influencing the results of RAPD such as template DNA, Mg2＋, random primer, dNTPs and Taq polymerase, and screening the random primers. [Result] The optimum RAPD reaction system was 25.0 μl in total volume, containing 4.0-32.0 ng/μl of template DNA, 200.0 μg/L random primer, 2.0 mmol/L Mg2＋, 200.0 μmol/L dNTPs and 1.0 U of Taq enzyme. Then, the Thai Hom Mali rice and non-Thai Hom Mali rice can be distinguished according to the presence or absence of two DNA markers. [Conclusion] The RAPD technology can effectively cover the shortages of identifications by sense and boiling in water; in addition, it is simple, sensitive and low-cost, suitable to be used in routine tests.
