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C48H68Cl4N8O8Ni4, tetragonal, I41/a (no. 88), a = 16.9137(5) Å, c = 19.5028(13) Å, V = 5579.2(5) Å3, Z = 4, Rgt (F) = 0.0391, wRref (F 2) = 0.1221, T = 293 K.

C18H15N7O4Zn, triclinic, P 1‾ $\overline{1}$ (no. 2), a = 9.1100(8) Å, b = 10.6451(7) Å, c = 12.0479(8) Å, α = 95.238(5)∘, β = 112.154(7)∘, γ = 112.971(7)∘, V = 956.56(13) Å3, Z = 2, R gt(F) = 0.0264, wR ref(F 2) = 0.0731, T = 298 K.

Cancer prevention and treatment are currently the focus of most research. Dose verification is an important step for reducing the improper dose deposition during radiotherapy. To mend the traditional gel dosimeters for 3D dose verification, a novel rare-earth nanoparticle-based composite gel was prepared, which has good radioluminescence property and reusability. It is a promising phantom material for the new 3D gel dosimeter. TEM, DLS, FT-IR, TGA, and spectrofluorometer were used to determine the chemical structure, micromorphology, and optical performance. Compared to the traditional gel dosimeters, the composite gel has a good linear relationship between the light intensity excited by X-ray and the tube current. Furthermore, it may measure the dose distribution immediately in situ, which reduces errors and saves time. This work provides a new idea for the research of 3D gel dosimeters and promotes the safe and effective use of radiotherapy.

C48H68Cl4N8O8Ni4, tetragonal, I41/a (no. 88), a = 16.9137(5) Å, c = 19.5028(13) Å, V = 5579.2(5) Å3, Z = 4, Rgt(F) = 0.0391, wRref(F2) = 0.1221, T = 293 K. [ABSTRACT FROM AUTHOR]

C48H68Cl4N8O8Ni4, tetragonal, I41/a (no. 88), a = 16.9137(5) Å, c = 19.5028(13) Å, V = 5579.2(5) Å3, Z = 4, Rgt(F) = 0.0391, wRref(F2) = 0.1221, T = 293 K. [ABSTRACT FROM AUTHOR]

C18H15N7O4Zn, triclinic, P 1 ‾ (no. 2), a = 9.1100(8) Å, b = 10.6451(7) Å, c = 12.0479(8) Å, α = 95.238(5)∘, β = 112.154(7)∘, γ = 112.971(7)∘, V = 956.56(13) Å3, Z = 2, Rgt(F) = 0.0264, wRref(F2) = 0.0731, T = 298 K. [ABSTRACT FROM AUTHOR]

New ferritic P92 steel is widely used in modern power plants due to its good combination of mechanical and physical properties. However, cracks are often formed in the welded sections during the fabrication or service. In order to ensure the structure integrity, the effects of residual stresses need to be considered. The objective of this paper is to investigate the influence of arc travelling speed and welding sequences on the residual stresses distribution in the welded sections of P92 pipes by finite element method (FEM). Results show that arc travelling speed and welding sequences have great effects on residual stresses distribution. With the arc travelling speed increasing, the residual stresses increase. Meanwhile, welding sequences of case B present smaller residual stresses and more symmetrical distribution of residual stresses at the weld centre line. Therefore, using slower arc travelling speed and case B welding sequences can be useful to decrease the residual stresses, which provides a reference for optimizing the welding technology and improving the fabrication process of new ferritic P92 welded pipes with small diameter and thick wall.

C23H14Cl4N6O4, triclinic, P1̄ (no. 2), a = 9.044(2) Å, b = 11.340(2) Å, c = 11.812(3) Å, α = 95.470(17)°, β = 105.46(2)°, γ = 90.084(18)°, V = 1161.8(5) Å3, Z = 2, Rgt(F) = 0.0914, wRref(F2) = 0.2547, T = 296 K. [ABSTRACT FROM AUTHOR]