The sequences defined in Example 3 and Example 4 do not serve our purpose for any λ = （λn）. Because this sequences are just the sequences x = （xk） = （k） and x = （xk） = （1） respectively and any term of thes...The sequences defined in Example 3 and Example 4 do not serve our purpose for any λ = （λn）. Because this sequences are just the sequences x = （xk） = （k） and x = （xk） = （1） respectively and any term of these sequences can not be 0. In this short not we give Example 3＊ and Example 4＊ to show that the inclusions given in Theorem 2.4 and Theorem 2.9 are strict for some λ = （λn） , α and β such that 0 α β ≤ 1.展开更多
The foundation of the ultrasonic non-destructive determination of stresses in near-the-surface layers of solids is presented. The method is based on the regularities of Rayleigh wave propagation in solids with initial...The foundation of the ultrasonic non-destructive determination of stresses in near-the-surface layers of solids is presented. The method is based on the regularities of Rayleigh wave propagation in solids with initial （residual） stresses. A description of the above mentioned method and examples of stress determination are presented. Examples are considered as applied to the residual stresses arising at electric welding and the operating stresses arising at loading.展开更多
Dielectric resonators are key components in many microwave and millimetre wave circuits and applications, including high-Q filters and frequency-determining elements for precision frequency synthesis. Multilayered and...Dielectric resonators are key components in many microwave and millimetre wave circuits and applications, including high-Q filters and frequency-determining elements for precision frequency synthesis. Multilayered and bulk low-loss single crystal and polycrystalline dielectric structures have become very important for designing these devices. Proper design requires careful electromagnetic characterisation of low-loss material properties. This includes exact simulation with precision numerical software and precise measurements of resonant modes. For example, we have developed the Whispering Gallery mode technique, which has now become the standard for characterizing low-loss structures. This paper will review some of the common characterisation techniques used in the microwave to millimetre wave frequency regime.展开更多
A normal ultrasonic transducer of 5 MHz is modified using different delay lines and wedges design （made from Perspex）. Such modification is for ameliorate the capability of the transducer to detect sub-surface flaws...A normal ultrasonic transducer of 5 MHz is modified using different delay lines and wedges design （made from Perspex）. Such modification is for ameliorate the capability of the transducer to detect sub-surface flaws. Some prepared Aluminum pieces were subjected to different crosshead speed （200 and 350 ram/rain）. The ultrasonic pulse echo method was used at room temperature. The measurements have been done before and after each tensile stress. Flaws were found at different distances from the specimen＇s surface. Results showed that such delay lines and wedges were suitable to detect sub-surface flaws that were initiated under the effect of stress. In addition, a crosshead speed increment caused more sub-surface flaws formation.展开更多
General COMMUNICATIONS IN THEORETICAL PHYSICS （CTP） is pubfished monthly by the Chinese Physical Society through the Institute of Theoretical Physics, the Chinese Academy of Sciences, and online by IOP Publishing Lt...General COMMUNICATIONS IN THEORETICAL PHYSICS （CTP） is pubfished monthly by the Chinese Physical Society through the Institute of Theoretical Physics, the Chinese Academy of Sciences, and online by IOP Publishing Ltd. Articles in this journal are abstracted/indexed in Science Citation Index （SCI）, Science Citation Index Expanded （also known as SciSearch）, ISI Alerting Services, and Current Contents/Physical, Chemical and Earth Sciences; Science Abstracts （SA）, Chemical Abstracts （CA）, Mathematical Review （MR）, and Russian Abstract Journal （PЖ）, etc. Contributions all over the world are most welcome.展开更多
Chinese Physics B （Chin. Phys. B）, formerly titled Chinese Physics, is an international comprehensive academic journal, aiming to publish original papers and rapid communications reflecting creative and innovative a...Chinese Physics B （Chin. Phys. B）, formerly titled Chinese Physics, is an international comprehensive academic journal, aiming to publish original papers and rapid communications reflecting creative and innovative achievements in physics, as well as review papers about journal is published monthly in English by the Chinese important accomplishments in frontier of physics. The Physical Society （CPS） and the IOP Publishing. Chin.展开更多
Plasma Science and Technology （PST） journal assists in advancing plasma science and technology by reporting important, novel, helpful and thought-provoking progress in this strongly multidisciplinary and interdiscip...Plasma Science and Technology （PST） journal assists in advancing plasma science and technology by reporting important, novel, helpful and thought-provoking progress in this strongly multidisciplinary and interdisciplinary field, in a timely manner. This field encompasses foundational plasma phenomena; low-temperature plasmas; magnetically confined plasmas; inertially confined plasmas; astrophysics and space plasmas;展开更多
Plasma Science and Technology （PST） is a journal reporting novel experimental and theoretical results and progress of interdisciplinary and application sciences in the fields related to Plasma Physics. Specific inte...Plasma Science and Technology （PST） is a journal reporting novel experimental and theoretical results and progress of interdisciplinary and application sciences in the fields related to Plasma Physics. Specific interested areas include： basic plasma phenomena; magnetically confined plasma; inertially confined plasma; astrophysics and space plasma; low temperature plasma; plasma technology and fusion engineering.展开更多
Plasma Science and Technology （PST） is a journal reporting novel experimental and theoretical results and progress of interdisciplinary and application sciences in the fields related to Plasma Physics. Specific inte...Plasma Science and Technology （PST） is a journal reporting novel experimental and theoretical results and progress of interdisciplinary and application sciences in the fields related to Plasma Physics. Specific interested areas include： basic plasma phenomena; magnetically confined plasma; inertially confined plasma; astrophysics and space plasma; low temperature plasma; plasma technology and fusion engineering.展开更多
Plasma Science and Technology （PST） is a journal reporting novel experimental and theoretical results and progress of interdisciplinary and application sciences in the fields related to Plasma Physics. Specific inte...Plasma Science and Technology （PST） is a journal reporting novel experimental and theoretical results and progress of interdisciplinary and application sciences in the fields related to Plasma Physics. Specific interested areas include： basic plasma phenomena; magnetically confined plasma; inertially confined plasma; astrophysics and space plasma; low temperature plasma; plasma technology and fusion engineering.展开更多
Plasma Science and Technology （PST） is a journal reporting novel experimental and theoretical results and progress of interdisciplinary and application sciences in the fields related to Plasma Physics. Specific inte...Plasma Science and Technology （PST） is a journal reporting novel experimental and theoretical results and progress of interdisciplinary and application sciences in the fields related to Plasma Physics. Specific interested areas include： basic plasma phenomena; magnetically confined plasma; inertially confined plasma; astrophysics and space plasma; low temperature plasma; plasma technology and fusion engineering.展开更多
Plasma Science and Technology （PST） is a journal reporting novel experimental and theoretical results and progress of interdisciplinary and application sciences in the fields related to Plasma Physics. Specific inte...Plasma Science and Technology （PST） is a journal reporting novel experimental and theoretical results and progress of interdisciplinary and application sciences in the fields related to Plasma Physics. Specific interested areas include： basic plasma phenomena; magnetically confined plasma; inertially confined plasma; astrophysics and space plasma; low temperature plasma; plasma technology and fusion engineering.展开更多
Plasma Science and Technology （PST） is a journal reporting novel experimental and theoretical results and progress of interdisciplinary and application sciences in the fields related to Plasma Physics. Specific inte...Plasma Science and Technology （PST） is a journal reporting novel experimental and theoretical results and progress of interdisciplinary and application sciences in the fields related to Plasma Physics. Specific interested areas include： basic plasma phenomena; magnetically confined plasma; inertially confined plasma; astrophysics and space plasma; low temperature plasma; plasma technology and fusion engineering.展开更多
Plasma Science and Technology （PST） is a joumal reporting novel experimental and theoretical results and progress of interdisciplinary and application sciences in the fields related to Plasma Physics. Specific inter...Plasma Science and Technology （PST） is a joumal reporting novel experimental and theoretical results and progress of interdisciplinary and application sciences in the fields related to Plasma Physics. Specific interested areas include： basic plasma phenomena; magnetically confined plasma; inertially confined plasma; astrophysics and space plasma; low temperature plasma; plasma technology; fusion engineering and ion beam bioengineering.展开更多
Plasma Science and Technology （PST） is a journal reporting novel experimental and theoretical results and progress of interdisciplinary and application sciences in the fields related to Plasma Physics. Specific inte...Plasma Science and Technology （PST） is a journal reporting novel experimental and theoretical results and progress of interdisciplinary and application sciences in the fields related to Plasma Physics. Specific interested areas include： basic plasma phenomena; magnetically confined plasma; inertially confined plasma; astrophysics and space plasma; low temperature plasma; plasma technology; fusion engineering and ion beam bioengineering.展开更多
Plasma Science and Technology （PST） journal assists in advancing plasma science and technology by reporting important, novel, helpful and thought-provoking progress in this strongly multidisciplinary and interdiscip...Plasma Science and Technology （PST） journal assists in advancing plasma science and technology by reporting important, novel, helpful and thought-provoking progress in this strongly multidisciplinary and interdisciplinary field, in a timely manner. This field encompasses foundational plasma phenomena; low-temperature plasmas; magnetically confined plasmas; inertially confined plasmas; astrophysics and space plasmas; and interdisciplinary science of these; and the engineering and technology development and application from them.展开更多
Plasma Science and Technology （PST） journal assists in advancing plasma science and technology by reporting important, novel, helpful and thought-provoking progress in this strongly multidisciplinary and interdiscip...Plasma Science and Technology （PST） journal assists in advancing plasma science and technology by reporting important, novel, helpful and thought-provoking progress in this strongly multidisciplinary and interdisciplinary field, in a timely manner. This field encompasses foundational plasma phenomena; low-temperature plasmas; magnetically confined plasmas; inertially confined plasmas; astrophysics and space plasmas; and interdisciplinary science of these; and the engineering and technology development and application from them.展开更多
文摘The sequences defined in Example 3 and Example 4 do not serve our purpose for any λ = （λn）. Because this sequences are just the sequences x = （xk） = （k） and x = （xk） = （1） respectively and any term of these sequences can not be 0. In this short not we give Example 3＊ and Example 4＊ to show that the inclusions given in Theorem 2.4 and Theorem 2.9 are strict for some λ = （λn） , α and β such that 0 α β ≤ 1.
文摘The foundation of the ultrasonic non-destructive determination of stresses in near-the-surface layers of solids is presented. The method is based on the regularities of Rayleigh wave propagation in solids with initial （residual） stresses. A description of the above mentioned method and examples of stress determination are presented. Examples are considered as applied to the residual stresses arising at electric welding and the operating stresses arising at loading.
文摘Dielectric resonators are key components in many microwave and millimetre wave circuits and applications, including high-Q filters and frequency-determining elements for precision frequency synthesis. Multilayered and bulk low-loss single crystal and polycrystalline dielectric structures have become very important for designing these devices. Proper design requires careful electromagnetic characterisation of low-loss material properties. This includes exact simulation with precision numerical software and precise measurements of resonant modes. For example, we have developed the Whispering Gallery mode technique, which has now become the standard for characterizing low-loss structures. This paper will review some of the common characterisation techniques used in the microwave to millimetre wave frequency regime.
文摘A normal ultrasonic transducer of 5 MHz is modified using different delay lines and wedges design （made from Perspex）. Such modification is for ameliorate the capability of the transducer to detect sub-surface flaws. Some prepared Aluminum pieces were subjected to different crosshead speed （200 and 350 ram/rain）. The ultrasonic pulse echo method was used at room temperature. The measurements have been done before and after each tensile stress. Flaws were found at different distances from the specimen＇s surface. Results showed that such delay lines and wedges were suitable to detect sub-surface flaws that were initiated under the effect of stress. In addition, a crosshead speed increment caused more sub-surface flaws formation.
文摘General COMMUNICATIONS IN THEORETICAL PHYSICS （CTP） is pubfished monthly by the Chinese Physical Society through the Institute of Theoretical Physics, the Chinese Academy of Sciences, and online by IOP Publishing Ltd. Articles in this journal are abstracted/indexed in Science Citation Index （SCI）, Science Citation Index Expanded （also known as SciSearch）, ISI Alerting Services, and Current Contents/Physical, Chemical and Earth Sciences; Science Abstracts （SA）, Chemical Abstracts （CA）, Mathematical Review （MR）, and Russian Abstract Journal （PЖ）, etc. Contributions all over the world are most welcome.
文摘Chinese Physics B （Chin. Phys. B）, formerly titled Chinese Physics, is an international comprehensive academic journal, aiming to publish original papers and rapid communications reflecting creative and innovative achievements in physics, as well as review papers about journal is published monthly in English by the Chinese important accomplishments in frontier of physics. The Physical Society （CPS） and the IOP Publishing. Chin.
文摘Plasma Science and Technology （PST） journal assists in advancing plasma science and technology by reporting important, novel, helpful and thought-provoking progress in this strongly multidisciplinary and interdisciplinary field, in a timely manner. This field encompasses foundational plasma phenomena; low-temperature plasmas; magnetically confined plasmas; inertially confined plasmas; astrophysics and space plasmas;
文摘Plasma Science and Technology （PST） is a journal reporting novel experimental and theoretical results and progress of interdisciplinary and application sciences in the fields related to Plasma Physics. Specific interested areas include： basic plasma phenomena; magnetically confined plasma; inertially confined plasma; astrophysics and space plasma; low temperature plasma; plasma technology and fusion engineering.
文摘Plasma Science and Technology （PST） is a journal reporting novel experimental and theoretical results and progress of interdisciplinary and application sciences in the fields related to Plasma Physics. Specific interested areas include： basic plasma phenomena; magnetically confined plasma; inertially confined plasma; astrophysics and space plasma; low temperature plasma; plasma technology and fusion engineering.
文摘Plasma Science and Technology （PST） is a journal reporting novel experimental and theoretical results and progress of interdisciplinary and application sciences in the fields related to Plasma Physics. Specific interested areas include： basic plasma phenomena; magnetically confined plasma; inertially confined plasma; astrophysics and space plasma; low temperature plasma; plasma technology and fusion engineering.
文摘Plasma Science and Technology （PST） is a journal reporting novel experimental and theoretical results and progress of interdisciplinary and application sciences in the fields related to Plasma Physics. Specific interested areas include： basic plasma phenomena; magnetically confined plasma; inertially confined plasma; astrophysics and space plasma; low temperature plasma; plasma technology and fusion engineering.
文摘Plasma Science and Technology （PST） is a journal reporting novel experimental and theoretical results and progress of interdisciplinary and application sciences in the fields related to Plasma Physics. Specific interested areas include： basic plasma phenomena; magnetically confined plasma; inertially confined plasma; astrophysics and space plasma; low temperature plasma; plasma technology and fusion engineering.
文摘Plasma Science and Technology （PST） is a journal reporting novel experimental and theoretical results and progress of interdisciplinary and application sciences in the fields related to Plasma Physics. Specific interested areas include： basic plasma phenomena; magnetically confined plasma; inertially confined plasma; astrophysics and space plasma; low temperature plasma; plasma technology and fusion engineering.
文摘Plasma Science and Technology （PST） is a joumal reporting novel experimental and theoretical results and progress of interdisciplinary and application sciences in the fields related to Plasma Physics. Specific interested areas include： basic plasma phenomena; magnetically confined plasma; inertially confined plasma; astrophysics and space plasma; low temperature plasma; plasma technology; fusion engineering and ion beam bioengineering.
文摘Plasma Science and Technology （PST） is a journal reporting novel experimental and theoretical results and progress of interdisciplinary and application sciences in the fields related to Plasma Physics. Specific interested areas include： basic plasma phenomena; magnetically confined plasma; inertially confined plasma; astrophysics and space plasma; low temperature plasma; plasma technology; fusion engineering and ion beam bioengineering.
文摘Plasma Science and Technology （PST） journal assists in advancing plasma science and technology by reporting important, novel, helpful and thought-provoking progress in this strongly multidisciplinary and interdisciplinary field, in a timely manner. This field encompasses foundational plasma phenomena; low-temperature plasmas; magnetically confined plasmas; inertially confined plasmas; astrophysics and space plasmas; and interdisciplinary science of these; and the engineering and technology development and application from them.
文摘Plasma Science and Technology （PST） journal assists in advancing plasma science and technology by reporting important, novel, helpful and thought-provoking progress in this strongly multidisciplinary and interdisciplinary field, in a timely manner. This field encompasses foundational plasma phenomena; low-temperature plasmas; magnetically confined plasmas; inertially confined plasmas; astrophysics and space plasmas; and interdisciplinary science of these; and the engineering and technology development and application from them.
