There are three mechanisms to transfer information in HTTP: RFC1867,PUT and WebDAV, among which a new type of information is introduced in RFC1867 that is File and the object of ADO Stream.

Based on the analysis of IR, 1H NMR, 13 C NMR, MS and spectral analysis of their derivatives, they were identified as a new type of annonaceous acetogenins——seco bistetrahydrofuran annonaceous acetogenins.

New type Paley-Wiener theorems for the modified multidimensional Mellin transform

New type Paley-Wiener theorems for the modified multidimensional Mellin and inverse Mellin transforms are established.

Based on the combination of fractional calculus with fractal functions, a new type of functions is introduced; the definition, graph, property and dimension of this function are discussed.

A set game, in which the worth of a coalition is expressed by a set instead of a real number, is a new type of cooperative game.

The conic model method is a new type of method with more information available at each iteration than standard quadratic-based methods.

Although James and Coolidge (1933) solved the molecular hydrogen problem in almost complete agreement with experiment by using a 13-term 2-electron eigenfunction, his method can hardly be applied to more complex molecules. For this and other reasons (Coulson, 1938), it is still desirable to obtain a good one-electron eigenfunction, i.e., molecular orbital, for the hydrogen molecule. The best molecular orbital treatment available in the literature was given by Coulson (1938), who used a trial eigenfunction in...

Although James and Coolidge (1933) solved the molecular hydrogen problem in almost complete agreement with experiment by using a 13-term 2-electron eigenfunction, his method can hardly be applied to more complex molecules. For this and other reasons (Coulson, 1938), it is still desirable to obtain a good one-electron eigenfunction, i.e., molecular orbital, for the hydrogen molecule. The best molecular orbital treatment available in the literature was given by Coulson (1938), who used a trial eigenfunction in elliptical coordinates involving 5 parameters and obtained 3.603 eV for the binding energy of H_2, which is to be compared with the ex- perimental value of 4.72 eV. In the present investigation we have proposed a new type of trial eigenfunction for the molecular orbital: (1) with p = centers a, b, g, c, d,…… i = electron 1 or 2 (2) where the p's are centers along the bond axis a-b (Fig. 1). In this simple problem both the Fock and Hartree methods yield the same result. The molecular orbital ψ must satisfy the following integral equation: (3) where ε is the energy of the molecular orbital, F is the Fock operator which is equal to H+G(1), while H is the one-electron Hamiltonian operator: H = -1/2▽~2-1/r_a-1/r_b (4) and G(1) is the interaction potential (5) Substituting (1) into (3), we obtain the linear combination coefficients c_p, which must satisfy the following secular equation: (6) where is the solution of the secular determinant and The F_(pq)'s are not at first known, but depend upon the c_p's. A method of successive approximation must therefore be adopted. A set of c_p values may be assumed, the F_(pq)'s calculated, the secular determinant (7) solved, and a new set of c_p values found. This process is repeated until a "self-consistent" set of c_p values is obtained. The above procedure was first proposed by Roothaan (1951), not for H_2 but for more complex molecules. It was called by him the "LCAO SCF (linear combination of atomic orbitals self-consistent field) method". The new feature of the present investigation is that we not only use LCAO but also LCNAO (linear combination of non-atomic orbitals, such as x_g, x_c, x_d, …). The order of secular determinant (7) may be reduced to half if we replace the eigen- functions x_a, x_b .... by their symmetrical and anti-symmetrical linear combinations x_a + x_b and x_a-x_b. Numerical calculations have been carried out both for the three- and the two-centered molecular orbitals. The three-centered molecular orbital is (10) (11) where S_(ab) and S(ag) are the overlapping integrals between x_a and x_b, and between x_a and x_g respectively. The parameters a and g have 'been obtained to give minimum energy by the method described above. They are a=l.190, g=0.22, and the binding energy is 3.598 eV, which is almost as good as that obtained by Coulson (3.603 eV) using a trial function of 5 parameters. The two-centered molecular orbital is (12) (13) which gives a maximum binding energy of 3.630 eV for a=1.190 and R~(ac)=R(bd)=0.105 (Fig. 1). This result is 'better than Coulson's. If we allow different values for the ex-ponent α in x_a and x_g in equation (11), or if we use a four-centered molecular orbital, such as ψ=a(x_a + x_b) + b(x_c + x_d) with four parameters, namely α_a=α_b, α_c=α_d, R_(ac)=R_(bd) and the ratio b/a, it is possible to obtain a still better result. Extension of the present method to the treatment of more complex molecules is now under investigation.

A new type all-glass osmometer of very simple construction using asintered glass cylinder as rigid support for de-nitrated collodion membrane isdescribed. The solvent is put inside the osmotic cell and the solution outside.Not more than 10 ml of solution is needed for a determination, while theamount of solvent used is extremely small. No special technique is requiredfor the manipulation of the osmometer. It is especially suited for theosmometric studies with mixed solvents, for very viscous solutions...

A new type all-glass osmometer of very simple construction using asintered glass cylinder as rigid support for de-nitrated collodion membrane isdescribed. The solvent is put inside the osmotic cell and the solution outside.Not more than 10 ml of solution is needed for a determination, while theamount of solvent used is extremely small. No special technique is requiredfor the manipulation of the osmometer. It is especially suited for theosmometric studies with mixed solvents, for very viscous solutions and formeasurements at several temperatures. A polymethylmethacrylate fraction (M_n=6.3×10~5) was dissolved invarious mixtures of toluene-ethanol for osmometric and viscometric studies.Osmotic pressure data show that the value of A_2 goes through a maximum atthe volume fraction of ethanol γ= 0.17, and γ(A_2= 0) = 0.67 estimated fromthe initial slopes of the л/C vs C plots which are appreciably curved. The values of intrinsic viscosity also show a maximum at γ= 0.17, and inthe whole range of the mixed solvents the values of [η] and A_2 are symbatic.The solution viscosity shows slight shear rate dependence, and the deviationfrom Newtonian flow is greatest arround γ= 0.17 and becomes very smallnear the precipitation point, which occurs at γ(c= 1.10~(-3)g/cm~3)= 0.68_2. The experimental results indicate that the polymer coil is most expandedat γ= 0.17, where A_2 and [η] values are at their maximum and the solutionviscosity shows greatest shear rate dependence. This seems reasonable as thecohesion energy density of polymethylmethacrylate (12.2) lies between those oftoluene (8.94) and ethanol (12.80).

In recent years, Prestressed Concrete long piles are universally adopted. Last year such kind of pile with length up to 27~M have been produced in this country. Now in order to meet the requirements of Shanghai Harlour works and Yangtze River Bridges, we work out a new type of prestressed concrete hollow pile of 36~M long, with a cross-section, of 55 cm square (inner diameter 40 cm.) By using temporary prestressing fittings on pick points with automatic adjustment for prestress, the pile is suitable for...

In recent years, Prestressed Concrete long piles are universally adopted. Last year such kind of pile with length up to 27~M have been produced in this country. Now in order to meet the requirements of Shanghai Harlour works and Yangtze River Bridges, we work out a new type of prestressed concrete hollow pile of 36~M long, with a cross-section, of 55 cm square (inner diameter 40 cm.) By using temporary prestressing fittings on pick points with automatic adjustment for prestress, the pile is suitable for two points pick, which gives great facilities to handling and transpotation. Besides, 18% of steel saving can still be made. This paper only presents the principle and calculations. The testing results will be given later.