Model Seleksi Premi Asuransi Jiwa Dwiguna untuk Kasus Multiple Decrement

This article discusses a select survival model for the case of multiple decrements in evaluating endowment life insurance premium for person currently aged ( + ) years, who is selected at age with ℎ years selection period. The case of multiple decrements in this case is limited to two cases. The calculation of the annual premium is done by prior evaluating of the single premium, and the present value of annuity depends on theconstant force assumption

Phosphorus-Containing Poly(ethylene terephthalate): Solid-State Polymerization and Its Sequential Distribution

A series of phosphorus-containing copolyester prepolymers were first sythesized from dimethyl terephthalate (DMT), ethylene glycol (EG), and 2-carboxyethyl (phenyl)­phosphinic acid (CEPPA) by molten transesterification and polycondensation, and then solid-state polymerization (SSP) was conducted for different reaction times (<i>t</i>_SSP) so as to prepare higher molecular weight copolymers. The intrinsic viscosity was increased with the increase of <i>t</i>_ssp, but decreased with the increase of CEPPA content. The sequence distribution of resultant copolyesters was analyzed by ¹H NMR. It was found that the randomness of copolyesters was decreased after SSP, and the transesterification occurred mainly at the ester bonds formed by CEPPA and EG, resulting in the chain growth. DSC results showed that SSP treatment was favorable to enhance the crystallization ability of the obtained copolyesters

Thermal Transition Behavior, Thermal Stability, and Flame Retardancy of Low-Melting-Temperature Copolyester: Comonomer Effect

Phosphorus-containing poly­(ethylene terephthalate-<i>co</i>-diethylene terephthalate) (PEDT) with a low melting temperature was synthesized through esterification and copolycondensation of terephthalic acid, ethylene glycol, diethylene glycol (DEG), and 3-(hydroxyphenylphosphinyl)­propionic acid (HPPPA). DSC results showed that PEDTs still were crystallizable and that the lowest melting temperature of the PEDTs was reduced to 118.0 °C although the chain regularity was destroyed by the incorporation of comonomers. It was found that the addition of HPPPA can improve the thermal oxidative stability of copolyesters. The results of the limiting oxygen index (LOI) test, the UL-94 vertical test, and the cone calorimeter test indicated that HPPPA endowed PEDT with good flame-retardant properties. The LOI values of the PEDTs were increased to 30.5–34.8, the UL-94 ratings of vertical burning were improved to V-0, and both the peak heat release rate (pHRR) and the total heat release (THR) obviously decreased

Forest plots comparing rates of toxic effects for the CCRT group and RT alone group.

<p>(A) Rate of acute toxic effects. (B) Rate of late toxic effects.</p

Forest plots comparing rates of (A) persistence and recurrence, and (B) distant metastasis, between the CCRT group and RT alone group.

<p>Forest plots comparing rates of (A) persistence and recurrence, and (B) distant metastasis, between the CCRT group and RT alone group.</p

Funnel plot indicating no evidence of heterogeneity between trials for distant metastasis rate.

<p>RR values included in the meta-analysis are indicated on the abscissa axis, and the SE (Log OR) values are indicated on the ordinate axis. The impact of publication bias was assessed by observing the symmetry.</p