Two new analytical formulae expressing explicitly the derivatives of Chebyshev polynomials of the third and fourth kinds of any degree and of any order in terms of Chebyshev polynomials of the third and fourth kinds t...Two new analytical formulae expressing explicitly the derivatives of Chebyshev polynomials of the third and fourth kinds of any degree and of any order in terms of Chebyshev polynomials of the third and fourth kinds themselves are proved. Two other explicit formulae which express the third and fourth kinds Chebyshev expansion coefficients of a general-order derivative of an infinitely differentiable function in terms of their original expansion coefficients are also given. Two new reduction formulae for summing some terminating hypergeometric functions of unit argument are deduced. As an application of how to use Chebyshev polynomials of the third and fourth kinds for solving high-order boundary value problems, two spectral Galerkin numerical solutions of a special linear twelfth-order boundary value problem are given.展开更多
In this paper, the relationships between the region of the two coexisting kinds of macro-defects and the reduction in area, as well as between the region and the relative residual thickness of the billet are studied f...In this paper, the relationships between the region of the two coexisting kinds of macro-defects and the reduction in area, as well as between the region and the relative residual thickness of the billet are studied for the cup-cup axisymmetric combined extrusion, on the basis of the analytical expression obtained by the upper-bound approach. The presented model and conclusions are confirmed by the experimental results in this paper.展开更多
Three kinds of 'films' i.e. cross-linked film, grainy film and transparent film, wereobtained in the process of plasma polymerization of Octamethylcyclotetrasioxane(D4) under dif-ferent conditions. From SEM ph...Three kinds of 'films' i.e. cross-linked film, grainy film and transparent film, wereobtained in the process of plasma polymerization of Octamethylcyclotetrasioxane(D4) under dif-ferent conditions. From SEM photos, we can see that the cross-linked film has a network form.From XPS spectra, we can see that the content of Si-C bond of the cross-linked film is lower thanthat of the transparent film, and this result agrees well with the test results of FTIR spectra. Thisproves that the c1eavage of the Si-C bond and C-H bond are the main cleavage in the formationof cross-linked film, whereas the cleavage of the Si-O is the main cleavage in the formation oftransparent film. In order to enhance the collision of the reactive particles and investigate theinfluence of magnetic field on the plasma polymerization, we introduced the magnetic field, as aresult, we got the grainy film.展开更多
To protect the ecological balance and the environment for our existence, China has organized the projects to Rescue Seven Kinds of Animals, the panda, ibis, Yangtze crocodile, Hainan deer, David’s deer, big nosed ant...To protect the ecological balance and the environment for our existence, China has organized the projects to Rescue Seven Kinds of Animals, the panda, ibis, Yangtze crocodile, Hainan deer, David’s deer, big nosed antelop, and wild horse which are in imminent danger. Panda protection project. From 1992 to the year 2000, 14 panda reserves will be established, covering 4,242 sq km, including 2,479 sq km for the habitation of pandas. The construction and management of the. 13 existing panda reserves will be improved, covering 5,380 sq kin. And 17 new reserve corridors will be set up and 32 stations will be built in展开更多
Eczema belongs to the category of "Namusu" disease in Mongolian medicine. It is a common skin disease caused by "Xiri Wusu" combined with "blood". This paper briefly describes the effect ...Eczema belongs to the category of "Namusu" disease in Mongolian medicine. It is a common skin disease caused by "Xiri Wusu" combined with "blood". This paper briefly describes the effect of Mongolian medicine five kinds of mannan herbal bath modified prescription in the treatment of this disease, which is convenient for clinical reference and provides new ideas for scientific researchers.展开更多
It is reported from NRCCRM (the National Research Center for CRMs) that, China has presently developed 1262 kinds of grade A reference materials and 1739 grade B reference materials, involving the fields of the steel,...It is reported from NRCCRM (the National Research Center for CRMs) that, China has presently developed 1262 kinds of grade A reference materials and 1739 grade B reference materials, involving the fields of the steel, the geology, the petroleum, the nuclear material, the environment, the food and the clinical inspection,and etc. The reference materials play an important role in controlling the production quality, maintaining the market order and promoting the scientific and technological advancement.展开更多
One hundred years after the founding of the Communist Party of China(CPC), a new historical chapter has opened and socialism with Chinese characteristics has entered a new era. Party school teachers must always mainta...One hundred years after the founding of the Communist Party of China(CPC), a new historical chapter has opened and socialism with Chinese characteristics has entered a new era. Party school teachers must always maintain the political essence of the revolutionary vanguard, with the construction of socialism with Chinese characteristics as the core, and must consciously strengthen the party spirit to achieve the partys goals. After the 19th CPC National Congress, General Secretary Xi Jinping put forward a series of major issues and guiding opinions on the construction of teachers in Party schools. He pointed out that Party schools shoulder the important mission of studying Marxism and training builders and successors to the cause of socialism with Chinese characteristics, and called for better and faster construction of Socialist Party schools with Chinese characteristics. General Secretary Xi Jinping believes that only by combining the fighting fortresses of grassroots Party schools with the vanguard and exemplary role of party members can party schools do a better job. This series of important exposition has pointed out the direction and goal for party school teachers. Practice has shown that if the party schools teaching staff is well built and the level of scientific research talents is improved, a good political ecology and good atmosphere will be formed, which will make the party school more cohesive and effective and give full play to its role as a "think tank". In order to improve the teachers scientific research level, we must enhance their awareness in five aspects.展开更多
Objective To evaluate and compare 3 kinds of cecocloln urinary reservoir. Methods Perm pouch, indiana pouch or detenial cecocolon reservoir has been performed for 37 patients. The outcome was evaluated by urodynamic a...Objective To evaluate and compare 3 kinds of cecocloln urinary reservoir. Methods Perm pouch, indiana pouch or detenial cecocolon reservoir has been performed for 37 patients. The outcome was evaluated by urodynamic and clinically. Results Good continence has been achieved in all patients with an appendiceal continence mechanism. The capacity and intrareservoir pressure of detenial cecocolon was significantly different from penn or indiana pouch 3 months postoperatively (P【0.01) whereas the difference became in no significant 12 months postoperativelly (P】0. 05). The intrareservoir pressure on contraction was lower with penn pouch. Conclusion The penn or modified indiana pouch is better and more ideal as a urinary reservoir whereas the detenial cecocolon pouch is technically simpler. 6 refs,1 tab.展开更多
To compare and evaluate 3 kinds of treatments of pediatric closed femoral shaft fractures.Methods Seventy-nine patients were divided into 3 groups and treated using hip spica casting after skeletal traction,unilateral...To compare and evaluate 3 kinds of treatments of pediatric closed femoral shaft fractures.Methods Seventy-nine patients were divided into 3 groups and treated using hip spica casting after skeletal traction,unilateral multifunctional fixation and plate fixation.The result were evaluated according to clinical function,time to union,complications,radiology examination and the economic cost.Results Both time to union and economic cost of the external fixation group were shorter than that of the skeletal traction group and plate fixation group.Conclusion The unilateral multi-functional external fixation is an ideal solution to pediatric close femoral shaft fractures.7 refs,3 tabs.展开更多
To investigate the impact of different kinds of nerve injuries of early-stage fracture healing.Methods Three groups of rats were included in the experiment among which group 1 was inflicted with femoral fracture and T...To investigate the impact of different kinds of nerve injuries of early-stage fracture healing.Methods Three groups of rats were included in the experiment among which group 1 was inflicted with femoral fracture and T10 spinal cord transsection (SCI),group 2 was inflicted with femoral and peripheral nerve resection (PNR),and group 3 with simple femoral fracture as control group.Two weeks after operation the femoral bones were collected for X-ray checking and 2 more weeks later X-ray checking was performed again followed by pathomorphologic exams.Results X-ray result showed no massive calluses in the bones in the 2nd week postoperatively,while in the 4th week,callus appeared with larger size in group 3 than that of group 1 and with smaller size than that of group 2.It was the same with the result of pathomorphologic examining.Cortical bone bridges between fracture point and osteiod were also found in group 2 and there were less normal blood vessels and worse bone remodeling than that of group 3.There were relatively immature calluses with more fibroblast-like cells and disordered bone structure in group 2.Group 3 showed normal healing process and callus structure.Conclusion Early-stage bone fracture healing can be influenced significantly by different kinds of nerve injuries.6 refs,6 figs.展开更多
With the help of the method that combines the first kind of elliptic equation with the function transformation, some kinds of new composite solutions of a kind of coupled Schr?dinger equation are constructed. First, a...With the help of the method that combines the first kind of elliptic equation with the function transformation, some kinds of new composite solutions of a kind of coupled Schr?dinger equation are constructed. First, a kind of function transformation is presented, and then the problem of solving solutions of a kind of coupled Schr?dinger equation can be changed to the problem of solving solutions of the first kind of elliptic equation. Then, with the help of the conclusions of the B?cklund transformation and so on of the first kind of elliptic equation, the new infinite sequence composite solutions of a kind of coupled Schr?dinger equation are constructed. These solutions are consisting of two-soliton solutions and two-period solutions and so on.展开更多
According to the corresponding relations between general forces and general displacements, the balancing and geometrical equations of elasticity are multiplied by the corresponding virtual quantities, integrated with ...According to the corresponding relations between general forces and general displacements, the balancing and geometrical equations of elasticity are multiplied by the corresponding virtual quantities, integrated with volume and area, and then added algebraically. Proceeding to the next step, by substituting constitutive relation and considering that body force and surface force are both fellow forces, the generalized quasi-variational principles with the two kinds of variables of the first type are established in non-conservative systems. Through substituting another constitutive relation, using similar methods as above, the generalized quasi-variational principles with the two kinds of variables of the second type are established in non-conservative systems. By using the generalized quasi-complementary energy principles with the two kinds of variables of the first type, a method for solving two kinds of variables (internal force and deformation) is given for non-conservative systems of the typical fellow forces.展开更多
针对在厢式货车中的弱光环境下,对自动装箱系统的箱体识别精度低的问题,提出一种基于优化的Kindling the Darkness(KinD)网络与You Only Look Once 11(YOLO 11)目标检测的视觉识别方法。对KinD网络进行结构优化,引入双边滤波降噪和Sobe...针对在厢式货车中的弱光环境下,对自动装箱系统的箱体识别精度低的问题,提出一种基于优化的Kindling the Darkness(KinD)网络与You Only Look Once 11(YOLO 11)目标检测的视觉识别方法。对KinD网络进行结构优化,引入双边滤波降噪和Sobel边缘增强模块,实现图像亮度与细节的有效提升;通过YOLO 11算法检测瓦楞纸箱,进行三维定位与姿态估计。结果表明,优化的KinD网络经图像增强后,平均峰值信噪比达到15.04 dB,结构相似性指数为0.72,图像处理时间为0.338 s;YOLO 11算法对增强图像的目标检测匹配度达到完全匹配26.7%、高匹配42.7%,整体平均位置误差归一化值为0.0143。研究为物流行业的自动装卸工作提供技术支撑。展开更多
The factorization of the radial Schrodinger equation of n-dimensional (n≥2) hydrogen atoms and isotropic harmonic oscillators was investigated and four kinds of raising and lowering operators were derived.The relatio...The factorization of the radial Schrodinger equation of n-dimensional (n≥2) hydrogen atoms and isotropic harmonic oscillators was investigated and four kinds of raising and lowering operators were derived.The relation between n -dimensional (n≥2) and one-dimensional hydrogen atoms and harmonic oscillators was discussed.展开更多
Abstract Objective To investigate the effects of combined blockade by platelet activating factor (PAF) receptor antagonist BN 52021 in combination with opiate receptor antagonist naloxone on neurologica...Abstract Objective To investigate the effects of combined blockade by platelet activating factor (PAF) receptor antagonist BN 52021 in combination with opiate receptor antagonist naloxone on neurological function and neurological tissue damage after cervical cord injury. Methods Spinal cord contusion at C 6 segment was made with Allen method in cats, which were randomly divided into four groups: saline control group; BN 52021 group; naloxone group; and combined treatment group with BN 52021 and naloxone. Alteration of cervical cord blood flow, blood barrier permeability of the spinal cord, cervical cord tissue pathology and neurological functional scores were studied after experimental cervical cord injury. Results The animals treated with BN 52021 or naloxone had significantly better functional scores than saline controls 6 weeks after injury (P<0.05). Moreover, the combined treatment showed significantly better neurologic recovery than either naloxone or BN 52021 treated animals (P<0.05). The other indexes in combined treatment animals were also superior to those in naloxone or BN 52021 treated animals. Conclusions Combined blockade by two kinds of autolesion mediator receptor can more effectively inhibit secondary damage production and development after cervical cord injury and improve neurologic function.展开更多
I have many wonderful teachers.All of them are very kind,smart and patient.I am so lucky to have them as my teachers because they have helped me learn and grow in many ways.
I have a good friend named Jeff.We are both in Grade Seven and have been close friends since the beginning of this term.Jeff is tall and always wears a warm smile on his face.He is really friendly and kind.We have man...I have a good friend named Jeff.We are both in Grade Seven and have been close friends since the beginning of this term.Jeff is tall and always wears a warm smile on his face.He is really friendly and kind.We have many things in common.展开更多
文摘Two new analytical formulae expressing explicitly the derivatives of Chebyshev polynomials of the third and fourth kinds of any degree and of any order in terms of Chebyshev polynomials of the third and fourth kinds themselves are proved. Two other explicit formulae which express the third and fourth kinds Chebyshev expansion coefficients of a general-order derivative of an infinitely differentiable function in terms of their original expansion coefficients are also given. Two new reduction formulae for summing some terminating hypergeometric functions of unit argument are deduced. As an application of how to use Chebyshev polynomials of the third and fourth kinds for solving high-order boundary value problems, two spectral Galerkin numerical solutions of a special linear twelfth-order boundary value problem are given.
文摘In this paper, the relationships between the region of the two coexisting kinds of macro-defects and the reduction in area, as well as between the region and the relative residual thickness of the billet are studied for the cup-cup axisymmetric combined extrusion, on the basis of the analytical expression obtained by the upper-bound approach. The presented model and conclusions are confirmed by the experimental results in this paper.
文摘Three kinds of 'films' i.e. cross-linked film, grainy film and transparent film, wereobtained in the process of plasma polymerization of Octamethylcyclotetrasioxane(D4) under dif-ferent conditions. From SEM photos, we can see that the cross-linked film has a network form.From XPS spectra, we can see that the content of Si-C bond of the cross-linked film is lower thanthat of the transparent film, and this result agrees well with the test results of FTIR spectra. Thisproves that the c1eavage of the Si-C bond and C-H bond are the main cleavage in the formationof cross-linked film, whereas the cleavage of the Si-O is the main cleavage in the formation oftransparent film. In order to enhance the collision of the reactive particles and investigate theinfluence of magnetic field on the plasma polymerization, we introduced the magnetic field, as aresult, we got the grainy film.
文摘To protect the ecological balance and the environment for our existence, China has organized the projects to Rescue Seven Kinds of Animals, the panda, ibis, Yangtze crocodile, Hainan deer, David’s deer, big nosed antelop, and wild horse which are in imminent danger. Panda protection project. From 1992 to the year 2000, 14 panda reserves will be established, covering 4,242 sq km, including 2,479 sq km for the habitation of pandas. The construction and management of the. 13 existing panda reserves will be improved, covering 5,380 sq kin. And 17 new reserve corridors will be set up and 32 stations will be built in
文摘Eczema belongs to the category of "Namusu" disease in Mongolian medicine. It is a common skin disease caused by "Xiri Wusu" combined with "blood". This paper briefly describes the effect of Mongolian medicine five kinds of mannan herbal bath modified prescription in the treatment of this disease, which is convenient for clinical reference and provides new ideas for scientific researchers.
文摘It is reported from NRCCRM (the National Research Center for CRMs) that, China has presently developed 1262 kinds of grade A reference materials and 1739 grade B reference materials, involving the fields of the steel, the geology, the petroleum, the nuclear material, the environment, the food and the clinical inspection,and etc. The reference materials play an important role in controlling the production quality, maintaining the market order and promoting the scientific and technological advancement.
文摘One hundred years after the founding of the Communist Party of China(CPC), a new historical chapter has opened and socialism with Chinese characteristics has entered a new era. Party school teachers must always maintain the political essence of the revolutionary vanguard, with the construction of socialism with Chinese characteristics as the core, and must consciously strengthen the party spirit to achieve the partys goals. After the 19th CPC National Congress, General Secretary Xi Jinping put forward a series of major issues and guiding opinions on the construction of teachers in Party schools. He pointed out that Party schools shoulder the important mission of studying Marxism and training builders and successors to the cause of socialism with Chinese characteristics, and called for better and faster construction of Socialist Party schools with Chinese characteristics. General Secretary Xi Jinping believes that only by combining the fighting fortresses of grassroots Party schools with the vanguard and exemplary role of party members can party schools do a better job. This series of important exposition has pointed out the direction and goal for party school teachers. Practice has shown that if the party schools teaching staff is well built and the level of scientific research talents is improved, a good political ecology and good atmosphere will be formed, which will make the party school more cohesive and effective and give full play to its role as a "think tank". In order to improve the teachers scientific research level, we must enhance their awareness in five aspects.
文摘Objective To evaluate and compare 3 kinds of cecocloln urinary reservoir. Methods Perm pouch, indiana pouch or detenial cecocolon reservoir has been performed for 37 patients. The outcome was evaluated by urodynamic and clinically. Results Good continence has been achieved in all patients with an appendiceal continence mechanism. The capacity and intrareservoir pressure of detenial cecocolon was significantly different from penn or indiana pouch 3 months postoperatively (P【0.01) whereas the difference became in no significant 12 months postoperativelly (P】0. 05). The intrareservoir pressure on contraction was lower with penn pouch. Conclusion The penn or modified indiana pouch is better and more ideal as a urinary reservoir whereas the detenial cecocolon pouch is technically simpler. 6 refs,1 tab.
文摘To compare and evaluate 3 kinds of treatments of pediatric closed femoral shaft fractures.Methods Seventy-nine patients were divided into 3 groups and treated using hip spica casting after skeletal traction,unilateral multifunctional fixation and plate fixation.The result were evaluated according to clinical function,time to union,complications,radiology examination and the economic cost.Results Both time to union and economic cost of the external fixation group were shorter than that of the skeletal traction group and plate fixation group.Conclusion The unilateral multi-functional external fixation is an ideal solution to pediatric close femoral shaft fractures.7 refs,3 tabs.
文摘To investigate the impact of different kinds of nerve injuries of early-stage fracture healing.Methods Three groups of rats were included in the experiment among which group 1 was inflicted with femoral fracture and T10 spinal cord transsection (SCI),group 2 was inflicted with femoral and peripheral nerve resection (PNR),and group 3 with simple femoral fracture as control group.Two weeks after operation the femoral bones were collected for X-ray checking and 2 more weeks later X-ray checking was performed again followed by pathomorphologic exams.Results X-ray result showed no massive calluses in the bones in the 2nd week postoperatively,while in the 4th week,callus appeared with larger size in group 3 than that of group 1 and with smaller size than that of group 2.It was the same with the result of pathomorphologic examining.Cortical bone bridges between fracture point and osteiod were also found in group 2 and there were less normal blood vessels and worse bone remodeling than that of group 3.There were relatively immature calluses with more fibroblast-like cells and disordered bone structure in group 2.Group 3 showed normal healing process and callus structure.Conclusion Early-stage bone fracture healing can be influenced significantly by different kinds of nerve injuries.6 refs,6 figs.
基金supported by the Natural Natural Science Foundation of China(Grant No.11361040)the Science Research Foundation of Institution of Higher Education of Inner Mongolia Autonomous Region,China(Grant No.NJZY12031)the Natural Science Foundation of Inner Mongolia Autonomous Region,China(Grant No.2015MS0128).
文摘With the help of the method that combines the first kind of elliptic equation with the function transformation, some kinds of new composite solutions of a kind of coupled Schr?dinger equation are constructed. First, a kind of function transformation is presented, and then the problem of solving solutions of a kind of coupled Schr?dinger equation can be changed to the problem of solving solutions of the first kind of elliptic equation. Then, with the help of the conclusions of the B?cklund transformation and so on of the first kind of elliptic equation, the new infinite sequence composite solutions of a kind of coupled Schr?dinger equation are constructed. These solutions are consisting of two-soliton solutions and two-period solutions and so on.
基金partly financially supported by the National Natural Science Foundation of China(Grant No.10272034)the Natural Science Foundation of Harbin(Grant No.HEUF04003).
文摘According to the corresponding relations between general forces and general displacements, the balancing and geometrical equations of elasticity are multiplied by the corresponding virtual quantities, integrated with volume and area, and then added algebraically. Proceeding to the next step, by substituting constitutive relation and considering that body force and surface force are both fellow forces, the generalized quasi-variational principles with the two kinds of variables of the first type are established in non-conservative systems. Through substituting another constitutive relation, using similar methods as above, the generalized quasi-variational principles with the two kinds of variables of the second type are established in non-conservative systems. By using the generalized quasi-complementary energy principles with the two kinds of variables of the first type, a method for solving two kinds of variables (internal force and deformation) is given for non-conservative systems of the typical fellow forces.
文摘针对在厢式货车中的弱光环境下,对自动装箱系统的箱体识别精度低的问题,提出一种基于优化的Kindling the Darkness(KinD)网络与You Only Look Once 11(YOLO 11)目标检测的视觉识别方法。对KinD网络进行结构优化,引入双边滤波降噪和Sobel边缘增强模块,实现图像亮度与细节的有效提升;通过YOLO 11算法检测瓦楞纸箱,进行三维定位与姿态估计。结果表明,优化的KinD网络经图像增强后,平均峰值信噪比达到15.04 dB,结构相似性指数为0.72,图像处理时间为0.338 s;YOLO 11算法对增强图像的目标检测匹配度达到完全匹配26.7%、高匹配42.7%,整体平均位置误差归一化值为0.0143。研究为物流行业的自动装卸工作提供技术支撑。
文摘The factorization of the radial Schrodinger equation of n-dimensional (n≥2) hydrogen atoms and isotropic harmonic oscillators was investigated and four kinds of raising and lowering operators were derived.The relation between n -dimensional (n≥2) and one-dimensional hydrogen atoms and harmonic oscillators was discussed.
文摘Abstract Objective To investigate the effects of combined blockade by platelet activating factor (PAF) receptor antagonist BN 52021 in combination with opiate receptor antagonist naloxone on neurological function and neurological tissue damage after cervical cord injury. Methods Spinal cord contusion at C 6 segment was made with Allen method in cats, which were randomly divided into four groups: saline control group; BN 52021 group; naloxone group; and combined treatment group with BN 52021 and naloxone. Alteration of cervical cord blood flow, blood barrier permeability of the spinal cord, cervical cord tissue pathology and neurological functional scores were studied after experimental cervical cord injury. Results The animals treated with BN 52021 or naloxone had significantly better functional scores than saline controls 6 weeks after injury (P<0.05). Moreover, the combined treatment showed significantly better neurologic recovery than either naloxone or BN 52021 treated animals (P<0.05). The other indexes in combined treatment animals were also superior to those in naloxone or BN 52021 treated animals. Conclusions Combined blockade by two kinds of autolesion mediator receptor can more effectively inhibit secondary damage production and development after cervical cord injury and improve neurologic function.
文摘I have many wonderful teachers.All of them are very kind,smart and patient.I am so lucky to have them as my teachers because they have helped me learn and grow in many ways.
文摘I have a good friend named Jeff.We are both in Grade Seven and have been close friends since the beginning of this term.Jeff is tall and always wears a warm smile on his face.He is really friendly and kind.We have many things in common.
