Ⅰ. INTRODUCTION In the basic relations of spectral analysis, there exsits an empirical correlation between the intensity of the spectral line and the concentration of the substance analyzed:
The band conveyer driven by linear friction is a new device. It can reduce drivesize and conveyor belt tensity, and increase delivery capacity. It has feasibility and usability particularly in altering the original co...The band conveyer driven by linear friction is a new device. It can reduce drivesize and conveyor belt tensity, and increase delivery capacity. It has feasibility and usability particularly in altering the original conveyer and solving the problems of capacity insufficiency. The technology has brought certain difficulty for engineers, because it has certaindifficulty both in theory and in calculation. Therefore, Visual Basic 6.0 programming technology was used to develop a set of 'the design system of the band conveyer driven bylinear friction.' After being proved in the field, it can completely meet the demands of thedesign. This paper introduced its main theory or basis in design, so as to provide relatedtechnical support to this kind of project.展开更多
In order to determine the effectivenessof auriculotherapeutical treatment forbiliary gallstone,we have applied electric earacupuncture on the MA-Sc8 acupoints(Gallbladder-Pancreas Point 胆胰穴)oftwelve patients suffer...In order to determine the effectivenessof auriculotherapeutical treatment forbiliary gallstone,we have applied electric earacupuncture on the MA-Sc8 acupoints(Gallbladder-Pancreas Point 胆胰穴)oftwelve patients suffering from biliarygallstones.The acupuncture was appliedduring a surgical procedure that allowed展开更多
Objective:To explore the efficacy of Lianhua Qingwen Capsule(莲花清瘟胶囊)on upper respiratory tract infection,to understand the impact of Lianhua Qingwen Capsule(莲花清瘟胶囊)on the treatment outcome of upper respira...Objective:To explore the efficacy of Lianhua Qingwen Capsule(莲花清瘟胶囊)on upper respiratory tract infection,to understand the impact of Lianhua Qingwen Capsule(莲花清瘟胶囊)on the treatment outcome of upper respiratory tract infection,and provide reference for rational clinical drug use.Methods:The HIS database based on 18 large third-grade class-A hospitals was selected to match 1:1 for upper respiratory tract infection patients using and without Lianhua Qingwen Capsule(莲花清瘟胶囊)according to certain standards.The recombination of treatment outcome as"recovery"and"improvement"in the database was defined as effective treatment,"ineffectiveness","death"and"other"as ineffectivetreatment populations,and the effectiveness of treatment outcomes in the remerged 2 groups was compared by propensity score method.Results:After matching,454 cases were in both the patients treated by(experimental group)and without(control group)Lianhua Qingwen Capsule(莲花清瘟胶囊).Analysis was performed by three Logistic regression methods,all showing regression coefficients greater than 0 and statistically significant differences(P<0.05).Conclusion:Patients with upper respiratory tract infection treated by Lianhua Qingwen Capsule(莲花清瘟胶囊)are more effective than that without Lianhua Qingwen Capsule(莲花清瘟胶囊),it can improve the clinical efficacy of patients with upper respiratory tract infection。展开更多
The intensity distribution in Fresnel diffraction through a slit includes numerous small fluctuations referred to as ripples. These ripples make the modelling of the intensity distribution complicated. In this study, ...The intensity distribution in Fresnel diffraction through a slit includes numerous small fluctuations referred to as ripples. These ripples make the modelling of the intensity distribution complicated. In this study, we examine the characteristics of the Fresnel diffraction intensity distribution to deduce the rule for the peak position and then propose two types of quantum-mathematical models to obtain the distance between the edge and the peak point. The analysis and simulation indicate that the error in the models is below 0.50 μm. The models can also be used to detect the edges of a diffraction object, and we conduct several experiments to measure the slit width. The experimental results reveal that the repetition accuracy of the method can reach 0.23 μm.展开更多
The chelate compound formed by terbium with acetylacetone （AA） has been used as the basis for a sensitive, accurate spectrofluorimetric determination of microamounts of terbium. At pH 8—8.5, [AA]/[Tb3+]=300—400, t...The chelate compound formed by terbium with acetylacetone （AA） has been used as the basis for a sensitive, accurate spectrofluorimetric determination of microamounts of terbium. At pH 8—8.5, [AA]/[Tb3+]=300—400, the chelate compound of terbium with AA forms quickly. The composition of the complex is Tb3+: AA=2:3. The展开更多
In order to understand the mechanism of alcoholizing liqueur with laser, CH3OH and C2H5OH multiphoton ionization （MPI） mass spectrum experiments were performed, thus making some dynamical properties preliminarily cl...In order to understand the mechanism of alcoholizing liqueur with laser, CH3OH and C2H5OH multiphoton ionization （MPI） mass spectrum experiments were performed, thus making some dynamical properties preliminarily clear.展开更多
After Weller discovered exciplex, he proposed that electron transfer occurs during the formation of exciplex. This means that in the excited state, electron is transferred from the highest occupied orbital, of the ele...After Weller discovered exciplex, he proposed that electron transfer occurs during the formation of exciplex. This means that in the excited state, electron is transferred from the highest occupied orbital, of the electron donor to the lowest vacant-orbital of the electron acceptor. In the summing-up of the conditions which are necessary for exciplex formation, he indicated that in the complex an electron was展开更多
Rice is one kind of thermophilic plant, in which Oryza sativa var.japanica is more resistant to chilling temperature than O. sativa var. indica. As we reported before, the oxidase of mitochondrion from japanica has lo...Rice is one kind of thermophilic plant, in which Oryza sativa var.japanica is more resistant to chilling temperature than O. sativa var. indica. As we reported before, the oxidase of mitochondrion from japanica has lower break point temperature of activation energy than indica. In addition, the membrane lipids of dry展开更多
I. INTRODUCTION The photopolymerization of methyl methacrylate sensitized with N, N-dimethylani-line(DMA) was described by Yokota et al. in 1972. Although they proposed a mechanism through the formation of exciplex fr...I. INTRODUCTION The photopolymerization of methyl methacrylate sensitized with N, N-dimethylani-line(DMA) was described by Yokota et al. in 1972. Although they proposed a mechanism through the formation of exciplex from the excited monomer and amine and its decomposition to generate the initiating radical, the formation of exciplex, however,展开更多
The Mssbauer spectra of K4[Fe（CN）6]·3H2O in external magnetic field at room temperature have been obtained using a single line source of 'Co/Pd. The experiment was carried out with an absorber of K4[Fe（CN...The Mssbauer spectra of K4[Fe（CN）6]·3H2O in external magnetic field at room temperature have been obtained using a single line source of 'Co/Pd. The experiment was carried out with an absorber of K4[Fe（CN）6]·3H2O （A. R. grade） in external magnetic field and the γ-ray展开更多
Ruthenium belongs to the group of transition metals and shows one of the largest ranges of valence states. Its chemical behaviour is very complicated. In nitric acid media ruthenium mainly presents as a stable species...Ruthenium belongs to the group of transition metals and shows one of the largest ranges of valence states. Its chemical behaviour is very complicated. In nitric acid media ruthenium mainly presents as a stable species of nitrosyl-ruthenium ion, RuNO2+,which can form a large number of complexes with many ligands, such as NO3-, NO2-,OH- and H2O,but most of these complexes are aquo-trinite complexes, namely RuNo-展开更多
The study on the radiation damage of organism is one of important subjects in btoscience. To erplain the complex damage mechanism on a molecular level, it is reasonable approach to investigate first the simple molecul...The study on the radiation damage of organism is one of important subjects in btoscience. To erplain the complex damage mechanism on a molecular level, it is reasonable approach to investigate first the simple molecule, e.g. amino acids. The damage of amino acids by high energy radia-展开更多
The internal state distribution of the product molecule produced in Ba（1S）+CCl4 and Ba（1S, 3D）+CCl4 reaction has been investigated under the single collision condition, using the techniques of laser-induced fluore...The internal state distribution of the product molecule produced in Ba（1S）+CCl4 and Ba（1S, 3D）+CCl4 reaction has been investigated under the single collision condition, using the techniques of laser-induced fluorescence and chemiluminescence. The BaCl (C2∏1/2-X2∑+)展开更多
The scaled boundary finite element method （SBFEM） is a novel semi-analytical technique that combines the advantages of the finite element method and the boundary element method with unique properties of its own. Thi...The scaled boundary finite element method （SBFEM） is a novel semi-analytical technique that combines the advantages of the finite element method and the boundary element method with unique properties of its own. This method has proven very efficient and accurate for determining the stress intensity factors （SIFs） for mode I and mode II two-dimensional crack problems. One main reason is that the SBFEM has a unique capacity of analytically representing the stress singularities at the crack tip. In this paper the SBFEM is developed for mode III （out of plane deformation） two-dimensional fracture anMysis. In addition, cubic B-spline functions are employed in this paper for constructing the shape functions in the circumferential direction so that higher continuity between elements is obtained. Numerical examples are presented at the end to demonstrate the simplicity and accuracy of the present approach for mode Ⅲ two-dimensional fracture analysis.展开更多
Ho3+ with various concentrations and Tm3+ with molar concentration of 1.28% are co-doped in Li YF4(YLF) single crystals. The luminescent properties of the crystals are investigated through emission spectra, emission c...Ho3+ with various concentrations and Tm3+ with molar concentration of 1.28% are co-doped in Li YF4(YLF) single crystals. The luminescent properties of the crystals are investigated through emission spectra, emission cross section and decay curves under the excitation of 808 nm. The energy transfer from Tm3+ to Ho3+ and the optimum fluorescence emission of Ho3+ around 2.05 μm are investigated. The emission intensity at 2.05 μm keeps increasing with the molar concentration of Ho3+ improved from 0.50% to 1.51% when the molar concentration of Tm3+ is kept at 1.28%. Moreover, for the co-doped crystals in which the molar concentrations of Tm3+ and Ho3+ are 1.28% and 1.51%, respectively, the maximum emission cross section reaches 0.760×10–20 cm2 and the maximum fluorescence lifetime is 21.98 ms. All the parameters suggest that these materials have more advantages in the future 2.0 μm laser applications.展开更多
From analyses of observation data it is found that stratification is usually unstable in the moist adiabatic process when cumulus develops vigorously. This shows that water vapour is an important factor for the develo...From analyses of observation data it is found that stratification is usually unstable in the moist adiabatic process when cumulus develops vigorously. This shows that water vapour is an important factor for the development of cumulus. Therefore, it can be seen that the condensation of water vapour in cumulus is not only the result of develop-展开更多
文摘Ⅰ. INTRODUCTION In the basic relations of spectral analysis, there exsits an empirical correlation between the intensity of the spectral line and the concentration of the substance analyzed:
基金Supported by the Beijing Important Constructive Subject of Processing and Storage of Agriculture Products ( PXM2009-014207-078172 )
文摘The band conveyer driven by linear friction is a new device. It can reduce drivesize and conveyor belt tensity, and increase delivery capacity. It has feasibility and usability particularly in altering the original conveyer and solving the problems of capacity insufficiency. The technology has brought certain difficulty for engineers, because it has certaindifficulty both in theory and in calculation. Therefore, Visual Basic 6.0 programming technology was used to develop a set of 'the design system of the band conveyer driven bylinear friction.' After being proved in the field, it can completely meet the demands of thedesign. This paper introduced its main theory or basis in design, so as to provide relatedtechnical support to this kind of project.
文摘In order to determine the effectivenessof auriculotherapeutical treatment forbiliary gallstone,we have applied electric earacupuncture on the MA-Sc8 acupoints(Gallbladder-Pancreas Point 胆胰穴)oftwelve patients suffering from biliarygallstones.The acupuncture was appliedduring a surgical procedure that allowed
基金China Academy of Chinese Medical Sciences Project approval:Science and technology innovation project of China Academy of Chinese Medical Sciences(ci2021a00702)approval:National key R&D plan"demonstration study on evidence-based evaluation and effect mechanism of ten large varieties of Chinese patent medicines and classic famous prescriptions in the treatment of major diseases after listing(2018yfc1707400)。
文摘Objective:To explore the efficacy of Lianhua Qingwen Capsule(莲花清瘟胶囊)on upper respiratory tract infection,to understand the impact of Lianhua Qingwen Capsule(莲花清瘟胶囊)on the treatment outcome of upper respiratory tract infection,and provide reference for rational clinical drug use.Methods:The HIS database based on 18 large third-grade class-A hospitals was selected to match 1:1 for upper respiratory tract infection patients using and without Lianhua Qingwen Capsule(莲花清瘟胶囊)according to certain standards.The recombination of treatment outcome as"recovery"and"improvement"in the database was defined as effective treatment,"ineffectiveness","death"and"other"as ineffectivetreatment populations,and the effectiveness of treatment outcomes in the remerged 2 groups was compared by propensity score method.Results:After matching,454 cases were in both the patients treated by(experimental group)and without(control group)Lianhua Qingwen Capsule(莲花清瘟胶囊).Analysis was performed by three Logistic regression methods,all showing regression coefficients greater than 0 and statistically significant differences(P<0.05).Conclusion:Patients with upper respiratory tract infection treated by Lianhua Qingwen Capsule(莲花清瘟胶囊)are more effective than that without Lianhua Qingwen Capsule(莲花清瘟胶囊),it can improve the clinical efficacy of patients with upper respiratory tract infection。
基金Project supported by the National Natural Science Foundation of China(Grant No.61475018)
文摘The intensity distribution in Fresnel diffraction through a slit includes numerous small fluctuations referred to as ripples. These ripples make the modelling of the intensity distribution complicated. In this study, we examine the characteristics of the Fresnel diffraction intensity distribution to deduce the rule for the peak position and then propose two types of quantum-mathematical models to obtain the distance between the edge and the peak point. The analysis and simulation indicate that the error in the models is below 0.50 μm. The models can also be used to detect the edges of a diffraction object, and we conduct several experiments to measure the slit width. The experimental results reveal that the repetition accuracy of the method can reach 0.23 μm.
文摘The chelate compound formed by terbium with acetylacetone （AA） has been used as the basis for a sensitive, accurate spectrofluorimetric determination of microamounts of terbium. At pH 8—8.5, [AA]/[Tb3+]=300—400, the chelate compound of terbium with AA forms quickly. The composition of the complex is Tb3+: AA=2:3. The
文摘In order to understand the mechanism of alcoholizing liqueur with laser, CH3OH and C2H5OH multiphoton ionization （MPI） mass spectrum experiments were performed, thus making some dynamical properties preliminarily clear.
文摘After Weller discovered exciplex, he proposed that electron transfer occurs during the formation of exciplex. This means that in the excited state, electron is transferred from the highest occupied orbital, of the electron donor to the lowest vacant-orbital of the electron acceptor. In the summing-up of the conditions which are necessary for exciplex formation, he indicated that in the complex an electron was
文摘Rice is one kind of thermophilic plant, in which Oryza sativa var.japanica is more resistant to chilling temperature than O. sativa var. indica. As we reported before, the oxidase of mitochondrion from japanica has lower break point temperature of activation energy than indica. In addition, the membrane lipids of dry
文摘I. INTRODUCTION The photopolymerization of methyl methacrylate sensitized with N, N-dimethylani-line(DMA) was described by Yokota et al. in 1972. Although they proposed a mechanism through the formation of exciplex from the excited monomer and amine and its decomposition to generate the initiating radical, the formation of exciplex, however,
文摘The Mssbauer spectra of K4[Fe（CN）6]·3H2O in external magnetic field at room temperature have been obtained using a single line source of 'Co/Pd. The experiment was carried out with an absorber of K4[Fe（CN）6]·3H2O （A. R. grade） in external magnetic field and the γ-ray
文摘Ruthenium belongs to the group of transition metals and shows one of the largest ranges of valence states. Its chemical behaviour is very complicated. In nitric acid media ruthenium mainly presents as a stable species of nitrosyl-ruthenium ion, RuNO2+,which can form a large number of complexes with many ligands, such as NO3-, NO2-,OH- and H2O,but most of these complexes are aquo-trinite complexes, namely RuNo-
文摘The study on the radiation damage of organism is one of important subjects in btoscience. To erplain the complex damage mechanism on a molecular level, it is reasonable approach to investigate first the simple molecule, e.g. amino acids. The damage of amino acids by high energy radia-
文摘The internal state distribution of the product molecule produced in Ba（1S）+CCl4 and Ba（1S, 3D）+CCl4 reaction has been investigated under the single collision condition, using the techniques of laser-induced fluorescence and chemiluminescence. The BaCl (C2∏1/2-X2∑+)
基金supported by the National Natural Science Foundation of China(No.11002054)
文摘The scaled boundary finite element method （SBFEM） is a novel semi-analytical technique that combines the advantages of the finite element method and the boundary element method with unique properties of its own. This method has proven very efficient and accurate for determining the stress intensity factors （SIFs） for mode I and mode II two-dimensional crack problems. One main reason is that the SBFEM has a unique capacity of analytically representing the stress singularities at the crack tip. In this paper the SBFEM is developed for mode III （out of plane deformation） two-dimensional fracture anMysis. In addition, cubic B-spline functions are employed in this paper for constructing the shape functions in the circumferential direction so that higher continuity between elements is obtained. Numerical examples are presented at the end to demonstrate the simplicity and accuracy of the present approach for mode Ⅲ two-dimensional fracture analysis.
基金supported by the National Natural Science Foundation of China(Nos.51472125 and 51272109)the Natural Science Foundation of Ningbo City(No.201401A6105016)K.C.Wong Magna Fund in Ningbo University
文摘Ho3+ with various concentrations and Tm3+ with molar concentration of 1.28% are co-doped in Li YF4(YLF) single crystals. The luminescent properties of the crystals are investigated through emission spectra, emission cross section and decay curves under the excitation of 808 nm. The energy transfer from Tm3+ to Ho3+ and the optimum fluorescence emission of Ho3+ around 2.05 μm are investigated. The emission intensity at 2.05 μm keeps increasing with the molar concentration of Ho3+ improved from 0.50% to 1.51% when the molar concentration of Tm3+ is kept at 1.28%. Moreover, for the co-doped crystals in which the molar concentrations of Tm3+ and Ho3+ are 1.28% and 1.51%, respectively, the maximum emission cross section reaches 0.760×10–20 cm2 and the maximum fluorescence lifetime is 21.98 ms. All the parameters suggest that these materials have more advantages in the future 2.0 μm laser applications.
文摘From analyses of observation data it is found that stratification is usually unstable in the moist adiabatic process when cumulus develops vigorously. This shows that water vapour is an important factor for the development of cumulus. Therefore, it can be seen that the condensation of water vapour in cumulus is not only the result of develop-
