The extended homoclinic test function method is a kind of classic, efficient and well-developed method to solve nonlinear evolution equations. In this paper, with the help of this approach, we obtain new exact solutio...The extended homoclinic test function method is a kind of classic, efficient and well-developed method to solve nonlinear evolution equations. In this paper, with the help of this approach, we obtain new exact solutions （including kinky periodic solitary-wave solutions, periodic soliton solutions, and cross kink-wave solutions） for the new （2＋1）-dimensional KdV equation. These results enrich the variety of the dynamics of higher-dimensionai nonlinear wave field.展开更多
This paper describes a new design for the test light source of an L/U-band extended optical fiber line testing system and the side-band suppresser ratio of the test light should be more than 70 dB.
Objective:To explore the characteristics of audiology examination of Noise-Induced Hidden Hearing Loss(NIHHL),and then explore its valuable diagnostic methods.Methods:A total of 80 young men aged between 19 and 35 wer...Objective:To explore the characteristics of audiology examination of Noise-Induced Hidden Hearing Loss(NIHHL),and then explore its valuable diagnostic methods.Methods:A total of 80 young men aged between 19 and 35 were selected.They were classified into the experimental group with noise exposure history and the control group without noise exposure history,with 40 men in each group.We carried out extended high-frequency audiometry test for good ears;conducted speech in noise measurement and distortion product emission for good ears;DPOAE test,compare and analyze the results of each test.Results:The extended high frequency hearing threshold test results showed that the hearing threshold of the experimental group was larger than that of the control group at the frequency above 8 kHz,with significant statistical difference(p<.01).The results of speech audiometry under noise showed that the signal-to-noise ratio loss in the experimental group was greater than that in the control group,with a significant statistical difference(p<.01).The results of otoacoustic emission showed that the signal-to-noise ratio of the experimental group was lower than that of the control group at the frequency of 6 kHz and above,with a statistically significant difference(p<.01).There is a correlation between pure tone audiometry and DPOAE test results at high frequencies(6 kHz:p<.0001,r=-.478;8 kHz:p<.0001,r=-.491);There was a correlation between speech audiometry and DPOAE test results under noise(p=.031,r=-.299).Conclusions:Compared with the control group,the extended high frequency pure tone hearing threshold increased or could not be elicited in the experimental group,speech recognition ability decreased significantly under noise,DPOAE was normally elicited but signal-to-noise ratio decreased,and there was a certain correlation between them.The above three audiological examination methods have a certain reference value for early recognition of hidden hearing loss.展开更多
To investigate the epidemiological status of extended spectrum β lactamase (ESBL) producing Escherichia coli (E. coli) and Klebsiella pneumoniae (K. pneumoniae) and the drug resistance profiles of such organisms ...To investigate the epidemiological status of extended spectrum β lactamase (ESBL) producing Escherichia coli (E. coli) and Klebsiella pneumoniae (K. pneumoniae) and the drug resistance profiles of such organisms Methods A total of 282 clinical isolates of E coli and 180 of K pneumoniae were collected from different districts of Zhejiang Province Inhibitor potentiated broth dilution tests were performed for detecting extended spectrum β lactamases Etests were performed to detect the drug resistance of these strains against nine commonly used antibiotics Results The prevalence of extended spectrum β lactamases in E coli and K pneumoniae was 34 0% and 38 3%, respectively The average prevalence of extended spectrum β lactamases in E coli and K pneumoniae was 35 7% The resistance prevalence of extended spectrum β lactamase producing strains to ceftazidime and cefotaxime was 40% and 26% respectively, so were those to cefepime, cefoxitin, piperacillin tazobactam, cefoperazone sulbactam, amikacin and ciprofloxacin All these strains were sensitive to imipenem Conclusion The results in this study showed that the prevalence of extended spectrum β lactamases was high, while extended spectrum β lactamase producing strains were resistant to most antimicrobial agents except imipenem展开更多
Painleve integrability has been tested for （2＋1）D Boussinesq equation with disturbance term using the standard WTC approach after introducing the Kruskai＇s simplification. New breather solitary solutions depending...Painleve integrability has been tested for （2＋1）D Boussinesq equation with disturbance term using the standard WTC approach after introducing the Kruskai＇s simplification. New breather solitary solutions depending on constant equilibrium solution are obtained by using Extended Homoclinic Test Method. Moreover, the spatiotemporal feature of breather solitary wave is exhibited.展开更多
In this paper,by using bilinear form and extended homoclinic test approach,we obtain new breather-type periodic soliton solutions of the (1+1)-dimensional Sinh-Poisson equation.These results demonstrate that the nonli...In this paper,by using bilinear form and extended homoclinic test approach,we obtain new breather-type periodic soliton solutions of the (1+1)-dimensional Sinh-Poisson equation.These results demonstrate that the nonlinear evolution equation has rich dynamical behavior even if it is (1+1)-dimensional.展开更多
In this paper,the idea of a combination of variable separation approach and the extended homoclinic test approach is proposed to seek non-travelling wave solutions of Calogero equation.The equation is reduced to some(...In this paper,the idea of a combination of variable separation approach and the extended homoclinic test approach is proposed to seek non-travelling wave solutions of Calogero equation.The equation is reduced to some(1+1)-dimensional nonlinear equations by applying the variable separation approach and solves reduced equations with the extended homoclinic test technique.Based on this idea and with the aid of symbolic computation,some new explicit solutions can be obtained.展开更多
基金Supported by the Natural Science Foundation of China under Grant Nos.10361007,10661002Yunnan Natural Science Foundation under Grant No.2006A0082M
文摘The extended homoclinic test function method is a kind of classic, efficient and well-developed method to solve nonlinear evolution equations. In this paper, with the help of this approach, we obtain new exact solutions （including kinky periodic solitary-wave solutions, periodic soliton solutions, and cross kink-wave solutions） for the new （2＋1）-dimensional KdV equation. These results enrich the variety of the dynamics of higher-dimensionai nonlinear wave field.
文摘This paper describes a new design for the test light source of an L/U-band extended optical fiber line testing system and the side-band suppresser ratio of the test light should be more than 70 dB.
基金supported by the Science and Technology Bureau of Baotou City(project number jkws202057).
文摘Objective:To explore the characteristics of audiology examination of Noise-Induced Hidden Hearing Loss(NIHHL),and then explore its valuable diagnostic methods.Methods:A total of 80 young men aged between 19 and 35 were selected.They were classified into the experimental group with noise exposure history and the control group without noise exposure history,with 40 men in each group.We carried out extended high-frequency audiometry test for good ears;conducted speech in noise measurement and distortion product emission for good ears;DPOAE test,compare and analyze the results of each test.Results:The extended high frequency hearing threshold test results showed that the hearing threshold of the experimental group was larger than that of the control group at the frequency above 8 kHz,with significant statistical difference(p<.01).The results of speech audiometry under noise showed that the signal-to-noise ratio loss in the experimental group was greater than that in the control group,with a significant statistical difference(p<.01).The results of otoacoustic emission showed that the signal-to-noise ratio of the experimental group was lower than that of the control group at the frequency of 6 kHz and above,with a statistically significant difference(p<.01).There is a correlation between pure tone audiometry and DPOAE test results at high frequencies(6 kHz:p<.0001,r=-.478;8 kHz:p<.0001,r=-.491);There was a correlation between speech audiometry and DPOAE test results under noise(p=.031,r=-.299).Conclusions:Compared with the control group,the extended high frequency pure tone hearing threshold increased or could not be elicited in the experimental group,speech recognition ability decreased significantly under noise,DPOAE was normally elicited but signal-to-noise ratio decreased,and there was a certain correlation between them.The above three audiological examination methods have a certain reference value for early recognition of hidden hearing loss.
文摘To investigate the epidemiological status of extended spectrum β lactamase (ESBL) producing Escherichia coli (E. coli) and Klebsiella pneumoniae (K. pneumoniae) and the drug resistance profiles of such organisms Methods A total of 282 clinical isolates of E coli and 180 of K pneumoniae were collected from different districts of Zhejiang Province Inhibitor potentiated broth dilution tests were performed for detecting extended spectrum β lactamases Etests were performed to detect the drug resistance of these strains against nine commonly used antibiotics Results The prevalence of extended spectrum β lactamases in E coli and K pneumoniae was 34 0% and 38 3%, respectively The average prevalence of extended spectrum β lactamases in E coli and K pneumoniae was 35 7% The resistance prevalence of extended spectrum β lactamase producing strains to ceftazidime and cefotaxime was 40% and 26% respectively, so were those to cefepime, cefoxitin, piperacillin tazobactam, cefoperazone sulbactam, amikacin and ciprofloxacin All these strains were sensitive to imipenem Conclusion The results in this study showed that the prevalence of extended spectrum β lactamases was high, while extended spectrum β lactamase producing strains were resistant to most antimicrobial agents except imipenem
基金Supported by National Natural Science Foundation of China under Grant Nos. 11061028, 11261049, Yunnan Natural Science Foundation under Grant Nos. 2010CD086 and 2011Y012 and Qujing Normal University Natural Science Foundation under Grant Nos. 2009ZD002 and 2012QN016
文摘Painleve integrability has been tested for （2＋1）D Boussinesq equation with disturbance term using the standard WTC approach after introducing the Kruskai＇s simplification. New breather solitary solutions depending on constant equilibrium solution are obtained by using Extended Homoclinic Test Method. Moreover, the spatiotemporal feature of breather solitary wave is exhibited.
基金Supported by the Natural Science Foundation of China under Grant No. 10971169Sichuan Educational Science Foundation under Grant No. 09zc008
文摘In this paper,by using bilinear form and extended homoclinic test approach,we obtain new breather-type periodic soliton solutions of the (1+1)-dimensional Sinh-Poisson equation.These results demonstrate that the nonlinear evolution equation has rich dynamical behavior even if it is (1+1)-dimensional.
文摘In this paper,the idea of a combination of variable separation approach and the extended homoclinic test approach is proposed to seek non-travelling wave solutions of Calogero equation.The equation is reduced to some(1+1)-dimensional nonlinear equations by applying the variable separation approach and solves reduced equations with the extended homoclinic test technique.Based on this idea and with the aid of symbolic computation,some new explicit solutions can be obtained.
