In the light of some assumptions that are very close to the practical working conditions,a very complicated polishing process of optical element can be simplified as a linear and shift invariant system that is relatd ...In the light of some assumptions that are very close to the practical working conditions,a very complicated polishing process of optical element can be simplified as a linear and shift invariant system that is relatd only to the speed,pres- sure and time of processing.In polishing,the removed material can be represented and entreated by the convolution of the removal function of polishing head and the dwell function.The properties of removal function are presented.The assumptions and methods given by the author have been shown to be correct and applicable by experiments using a ring lap to polish the optical surfac.展开更多
The present work examined the anisotropy magnitudes obtained from different elastic models of cubic metals(Cu,5383 Al alloy,FCC austenite steel and BCC steel)to explore the origin of strain anisotropy.The results show...The present work examined the anisotropy magnitudes obtained from different elastic models of cubic metals(Cu,5383 Al alloy,FCC austenite steel and BCC steel)to explore the origin of strain anisotropy.The results showed that stable intersections were observed from the modeled and experimental plots of the reciprocal elastic modulus(1/Ehkl)and orientation parameter(Γ).The effectiveness of quasi elasto-plastic model based method in correcting strain anisotropy was further verified in cold-worked specimens.For the important input parameters in dislocation model based diffraction line profile analysis methods,the average diffraction contrast factors(■)of dislocations were observed to depend on elastic constants.Interesting intersections were found from linear dependence of■onΓ.The conventional input■values indicated distinct dependencies on given elastic constants in diffraction line profile analysis.Accordingly,a refined approach was proposed by adopting the optimized intersections as input values,by which more reliable results could be obtained in practical applications.展开更多
We propose a locking-free nonconforming finite element method to solve for the displacement variation in the pure displacement boundary value problem of planar linear elasticity. The method proposed in this paper is r...We propose a locking-free nonconforming finite element method to solve for the displacement variation in the pure displacement boundary value problem of planar linear elasticity. The method proposed in this paper is robust and optimal, in the sense that the convergence estimate in the energy is independent of the Lame parameter λ.展开更多
Jasmonate （JA） regulates various plant defense and developmental processes. The F-box protein CORONATINE INSENSITIVE 1 （COIl） perceives JA signals to mediate diverse plant responses including male fertility, root ...Jasmonate （JA） regulates various plant defense and developmental processes. The F-box protein CORONATINE INSENSITIVE 1 （COIl） perceives JA signals to mediate diverse plant responses including male fertility, root growth, antho- cyanin accumulation, and defense against abiotic and biotic stresses. In this study, we carried out genetic, physiological and biochemical analysis on a series of coil mutant alleles, and found that different amino acid mutations in COIl distinctively af- fect JA-regulated male fertility in Arabidopsis. All the JA responses are disrupted by the COIl mutations W467＂ in coil-l, Q343＂ （coil-6）, G369E （coil-4）, G98D （coil-5）, G155E （coil-7）, D452A （coil-9） and L490A （coil-10）, though the coil-5 mutant （COIlG98D） contains adequate COIl protein （~60% of wild-type）. Interestingly, the low basal level of COIlE543K in the coil-8 mutant （-10% of wild-type COIl level） is sufficient for maintaining male fertility （-50% of wild-type fertility）; the coil-2 mutant with low level of COIlLz45F （-10% of wild-type） is male sterile under normal growth condition （22℃） but male fertile （~80% of wild-type fertility） at low temperature （16℃）; however, both coil-2 and coil-8 are defective in the other JA responses （root growth, anthocyanin accumulation, and plant response to the pathogen Pst DC3000 infection）.展开更多
In this paper, the author at first develops a method to study convergence of the cascadealgorithm in a Banach space without stable assumption on the initial (see Theorem 2.1), andthen applies the previous result on th...In this paper, the author at first develops a method to study convergence of the cascadealgorithm in a Banach space without stable assumption on the initial (see Theorem 2.1), andthen applies the previous result on the convergence to characterizing compactly supportedrefinable distributions in fractional Sobolev spaces and Holder continuous spaces (see Theorems3.1, 3.3, and 3.4). Finally the author applies the above characterization to choosing appropriateinitial to guarantee the convergence of the cascade algorithm (see Theorem 4.2).展开更多
Slender chiral filaments are ubiquitous in both artificial and biological materials.Due to their chiral microstructures,chiral filaments usually exhibit favorable properties such as superior elasticity and unusual str...Slender chiral filaments are ubiquitous in both artificial and biological materials.Due to their chiral microstructures,chiral filaments usually exhibit favorable properties such as superior elasticity and unusual stretch-twist coupling deformation.However,how these chiral microstructures affect the elastic behavior of filaments remains unclear.In this paper,a refined Cosserat rod model with misfit or mismatching of chirality induced by inhomogeneous arrangement of chiral microstructures incorporated is developed.Using the refined rod model,the force-displacement relationships and variation of structural chirality during the tensile processes of two typical helical structures,i.e.,single-strand helix and double-strand helix,are investigated.The results show that the misfit of chirality can lead to a bend-twist deformation with a high coupling degree,which makes the rod much“soft”when stretched.The chiral filaments undergo an unusual twist when stretched,corresponding to an obviously nonlinear variation of structural chirality.The work suggests that the misfit of chirality can be used to tune the elastic behavior of chiral filaments,which is helpful in guiding the design of flexible actuators and soft devices.展开更多
Objective： To compare the difference of infrared radiation temperature on body surface of points between healthy people and patients with hyperplasia of mammary glands. Method： The thermaCATMT P30 infrared thermal i...Objective： To compare the difference of infrared radiation temperature on body surface of points between healthy people and patients with hyperplasia of mammary glands. Method： The thermaCATMT P30 infrared thermal imaging system was selected to measure the infrared radiation temperature on body surface of eight points in four meridians in 74 patients with hyperplasia of mammary glands and 63 healthy people. Results： The infrared radiation temperatures on body surface of right Youmen （KI 21） in cases with hyperplasia of mammary glands were significantly higher than the healthy people （P=-0.009）, and the infrared radiation temperatures on left Youmen （KI 21） and other points had no significant difference with healthy people （P〉0.05）. Conclusion： The infrared radiation temperatures on body surface of right Youmen （KI 21） have significant differences with healthy people. This might occur because of the pathogenesis of hyperplasia of mammary glands and of the specificity of the point Youmen （KI 21）.展开更多
In this paper,a system of elliptic equations is investigated,which involves multiple critical Sobolev exponents and symmetric multi-polar potentials.By variational methods and analytic techniques,the relevant best con...In this paper,a system of elliptic equations is investigated,which involves multiple critical Sobolev exponents and symmetric multi-polar potentials.By variational methods and analytic techniques,the relevant best constants are studied and the existence of(Zk×SO(N.2))2-invariant solutions to the system is established.展开更多
文摘In the light of some assumptions that are very close to the practical working conditions,a very complicated polishing process of optical element can be simplified as a linear and shift invariant system that is relatd only to the speed,pres- sure and time of processing.In polishing,the removed material can be represented and entreated by the convolution of the removal function of polishing head and the dwell function.The properties of removal function are presented.The assumptions and methods given by the author have been shown to be correct and applicable by experiments using a ring lap to polish the optical surfac.
基金Project(51904099)supported by the National Natural Science Foundation of ChinaProject(531118010353)supported by the Fundamental Research Funds for the Central Universities,China。
文摘The present work examined the anisotropy magnitudes obtained from different elastic models of cubic metals(Cu,5383 Al alloy,FCC austenite steel and BCC steel)to explore the origin of strain anisotropy.The results showed that stable intersections were observed from the modeled and experimental plots of the reciprocal elastic modulus(1/Ehkl)and orientation parameter(Γ).The effectiveness of quasi elasto-plastic model based method in correcting strain anisotropy was further verified in cold-worked specimens.For the important input parameters in dislocation model based diffraction line profile analysis methods,the average diffraction contrast factors(■)of dislocations were observed to depend on elastic constants.Interesting intersections were found from linear dependence of■onΓ.The conventional input■values indicated distinct dependencies on given elastic constants in diffraction line profile analysis.Accordingly,a refined approach was proposed by adopting the optimized intersections as input values,by which more reliable results could be obtained in practical applications.
基金Supported by the NSF of the Education Henan(200510078005)
文摘We propose a locking-free nonconforming finite element method to solve for the displacement variation in the pure displacement boundary value problem of planar linear elasticity. The method proposed in this paper is robust and optimal, in the sense that the convergence estimate in the energy is independent of the Lame parameter λ.
基金supported by the National Natural Science Foundation of China(31230008 and 91017012)Ministry of Agriculture of China(2013ZX08011-006)
文摘Jasmonate （JA） regulates various plant defense and developmental processes. The F-box protein CORONATINE INSENSITIVE 1 （COIl） perceives JA signals to mediate diverse plant responses including male fertility, root growth, antho- cyanin accumulation, and defense against abiotic and biotic stresses. In this study, we carried out genetic, physiological and biochemical analysis on a series of coil mutant alleles, and found that different amino acid mutations in COIl distinctively af- fect JA-regulated male fertility in Arabidopsis. All the JA responses are disrupted by the COIl mutations W467＂ in coil-l, Q343＂ （coil-6）, G369E （coil-4）, G98D （coil-5）, G155E （coil-7）, D452A （coil-9） and L490A （coil-10）, though the coil-5 mutant （COIlG98D） contains adequate COIl protein （~60% of wild-type）. Interestingly, the low basal level of COIlE543K in the coil-8 mutant （-10% of wild-type COIl level） is sufficient for maintaining male fertility （-50% of wild-type fertility）; the coil-2 mutant with low level of COIlLz45F （-10% of wild-type） is male sterile under normal growth condition （22℃） but male fertile （~80% of wild-type fertility） at low temperature （16℃）; however, both coil-2 and coil-8 are defective in the other JA responses （root growth, anthocyanin accumulation, and plant response to the pathogen Pst DC3000 infection）.
文摘In this paper, the author at first develops a method to study convergence of the cascadealgorithm in a Banach space without stable assumption on the initial (see Theorem 2.1), andthen applies the previous result on the convergence to characterizing compactly supportedrefinable distributions in fractional Sobolev spaces and Holder continuous spaces (see Theorems3.1, 3.3, and 3.4). Finally the author applies the above characterization to choosing appropriateinitial to guarantee the convergence of the cascade algorithm (see Theorem 4.2).
基金the National Natural Science Foundation of China(Grant Nos.12020101001,12021002,11872273,and 11890680)Tianjin Research Program of Application Foundation and Advanced Technology(Grant No.19JCYBJC19300).
文摘Slender chiral filaments are ubiquitous in both artificial and biological materials.Due to their chiral microstructures,chiral filaments usually exhibit favorable properties such as superior elasticity and unusual stretch-twist coupling deformation.However,how these chiral microstructures affect the elastic behavior of filaments remains unclear.In this paper,a refined Cosserat rod model with misfit or mismatching of chirality induced by inhomogeneous arrangement of chiral microstructures incorporated is developed.Using the refined rod model,the force-displacement relationships and variation of structural chirality during the tensile processes of two typical helical structures,i.e.,single-strand helix and double-strand helix,are investigated.The results show that the misfit of chirality can lead to a bend-twist deformation with a high coupling degree,which makes the rod much“soft”when stretched.The chiral filaments undergo an unusual twist when stretched,corresponding to an obviously nonlinear variation of structural chirality.The work suggests that the misfit of chirality can be used to tune the elastic behavior of chiral filaments,which is helpful in guiding the design of flexible actuators and soft devices.
基金State 973 plan (2005CB523306)National Natural Science Foundation (30572306)+1 种基金Shanghai Municipal Education Commission Project (07CZ034)State Administration of Traditional Chinese Medicine and Shanghai Leading Academic Discipline Project (T0304,T0302)
文摘Objective： To compare the difference of infrared radiation temperature on body surface of points between healthy people and patients with hyperplasia of mammary glands. Method： The thermaCATMT P30 infrared thermal imaging system was selected to measure the infrared radiation temperature on body surface of eight points in four meridians in 74 patients with hyperplasia of mammary glands and 63 healthy people. Results： The infrared radiation temperatures on body surface of right Youmen （KI 21） in cases with hyperplasia of mammary glands were significantly higher than the healthy people （P=-0.009）, and the infrared radiation temperatures on left Youmen （KI 21） and other points had no significant difference with healthy people （P〉0.05）. Conclusion： The infrared radiation temperatures on body surface of right Youmen （KI 21） have significant differences with healthy people. This might occur because of the pathogenesis of hyperplasia of mammary glands and of the specificity of the point Youmen （KI 21）.
基金supported by the Science Foundation of State Ethnic Affairs Commission of the People’s Republic of China(Grant No.12ZNZ004)
文摘In this paper,a system of elliptic equations is investigated,which involves multiple critical Sobolev exponents and symmetric multi-polar potentials.By variational methods and analytic techniques,the relevant best constants are studied and the existence of(Zk×SO(N.2))2-invariant solutions to the system is established.
