建立了一种在温和条件下,用可见光催化合成一系列3,4-二氢异喹啉-1(2H)-酮及其衍生物的方法。该方法在室温条件下,以2-烯丙基-N-甲氧基苯甲酰胺为模板底物,以碘化钾作为光催化剂,25 W 460 nm的蓝色LED灯照射下,合成一系列3,4-二氢异喹啉...建立了一种在温和条件下,用可见光催化合成一系列3,4-二氢异喹啉-1(2H)-酮及其衍生物的方法。该方法在室温条件下,以2-烯丙基-N-甲氧基苯甲酰胺为模板底物,以碘化钾作为光催化剂,25 W 460 nm的蓝色LED灯照射下,合成一系列3,4-二氢异喹啉-1(2H)-酮衍生物,最高产率可达到83%。该合成路径具有底物适用范围广、经济实用等特点,为3,4-二氢异喹啉-1(2H)-酮衍生物合成提供了一种经济简便的方法。展开更多
目的:探究规范化H2H(Hospital To Home)营养管理模式在鼾症患儿加速康复中的应用效果。方法:便利选取云南省某三级综合医院儿科住院手术的92例鼾症患儿为研究对象,随机将其分为对照组和研究组,各46例。对照组予以常规营养管理模式,研究...目的:探究规范化H2H(Hospital To Home)营养管理模式在鼾症患儿加速康复中的应用效果。方法:便利选取云南省某三级综合医院儿科住院手术的92例鼾症患儿为研究对象,随机将其分为对照组和研究组,各46例。对照组予以常规营养管理模式,研究组予以规范化H2H营养管理模式,对比两组患儿的营养状况及护理满意度。结果:研究组较对照组的营养状况好,护理满意度评分高(P<0.05)。结论:在鼾症患儿手术治疗后的加速康复护理中,运用规范化H2H营养管理模式,可使患儿获得个体化、针对性的营养护理指导,使得患儿的体格发育和营养状况得到较大的改善,有利于患儿的身心健康,同时可获得较好的护理满意度,值得进一步推广应用。展开更多
以2-溴乙酸、壳聚糖、2-硫代四氢咪唑啉酮为原料,合成了不同接枝率的壳聚糖g--N-羧甲基-2-硫代-4,5-2H咪唑啉酮(CTS-g-CSIDZ),并对其理化性质进行了考察。用配合滴定法测定了该聚合物对Cd2+、CrO42-、Fe3+、Cu2+、Pb2+等重金属离子的吸...以2-溴乙酸、壳聚糖、2-硫代四氢咪唑啉酮为原料,合成了不同接枝率的壳聚糖g--N-羧甲基-2-硫代-4,5-2H咪唑啉酮(CTS-g-CSIDZ),并对其理化性质进行了考察。用配合滴定法测定了该聚合物对Cd2+、CrO42-、Fe3+、Cu2+、Pb2+等重金属离子的吸附作用;进行了聚合物的悬菌定量实验,测定了接枝聚合物对一系列细菌的抑菌能力;采用失重法研究了合成的聚合物在1 mol/L HC l溶液中对N80钢片腐蚀的抑制作用。结果表明,部分接枝的CSIDZ比小分子化合物具有更高的对测试的多数金属离子吸附作用的热稳定性;接枝CSIDZ具有较强的抑菌效果,最小抑菌浓度为5.10 g/L;接枝CSIDZ比小分子缓蚀剂具有更高的热稳定性,在90℃时对N80钢片的缓蚀效率仍然可以达到71.1%,且用量仅为小分子化合物CSIDZ的1/2。展开更多
The reaction of vinyl radicals with oxygen was investigated by Time-Resolved Fourier Transform infrared emission spectroscopy. The radicals were produced by the pulsed laser photolysis of C2H3Br at 248 nm. Vibrational...The reaction of vinyl radicals with oxygen was investigated by Time-Resolved Fourier Transform infrared emission spectroscopy. The radicals were produced by the pulsed laser photolysis of C2H3Br at 248 nm. Vibrationally excited products of H2CO（v1）, HCO（v3）, CO2（v3, v）, CH3（v3）, C2H2（v3）, HO2（v1）, C2H2O2（v3+v11）, CO（v） formed in the C2H3+O2 reaction have been observed. Four elementary reaction channels have been verified.展开更多
The elementary reaction of C2H3＋ NO has been reported for the first time in this paper.C2H3 radical was produced by laser photolysis of vinyl bromide at 248 nm.Vibrationally excited reaction products H2CO,NCO and HCN...The elementary reaction of C2H3＋ NO has been reported for the first time in this paper.C2H3 radical was produced by laser photolysis of vinyl bromide at 248 nm.Vibrationally excited reaction products H2CO,NCO and HCN were observed.Two exothermic reaction channels leading to HCN＋ H2CO and CH3＋ NCO are identified.展开更多
A new zinc hydrogen phosphite C4H8N2H4·Zn（HPO3）2 was prepared by hydrothermal method in the presence of piperazine as a structure-directing agent and the crystal structure was determined by single-crystal X-ray...A new zinc hydrogen phosphite C4H8N2H4·Zn（HPO3）2 was prepared by hydrothermal method in the presence of piperazine as a structure-directing agent and the crystal structure was determined by single-crystal X-ray diffraction analysis and further characterized by X-ray powder diffraction, IR, ICP, elemental analysis and TG analysis. This compound has one-dimensional anionic chains containing four-membered rings built from corner-sharing linked alternating ZnO4 tetrahedra and HPO3 pseudo pyramids. The zinc hydrogen phosphite chains are interacted with the templates of diprotonated piperazine by N—H…O hydrogen bond. Crystal data for C4H8N2H4·Zn（HPO3）2∶monoclinic, space group C2/c. a=1.774 8（2） nm, b=0.724 28（9） nm, c=0.880 87（11） nm, β= 105.345（3）°, V=1.091 9（2） nm 3, Z=4, Dc=1^907 Mg/m 3, R1=0.022 9, wR2=0.058 8.展开更多
文摘建立了一种在温和条件下,用可见光催化合成一系列3,4-二氢异喹啉-1(2H)-酮及其衍生物的方法。该方法在室温条件下,以2-烯丙基-N-甲氧基苯甲酰胺为模板底物,以碘化钾作为光催化剂,25 W 460 nm的蓝色LED灯照射下,合成一系列3,4-二氢异喹啉-1(2H)-酮衍生物,最高产率可达到83%。该合成路径具有底物适用范围广、经济实用等特点,为3,4-二氢异喹啉-1(2H)-酮衍生物合成提供了一种经济简便的方法。
文摘目的:探究规范化H2H(Hospital To Home)营养管理模式在鼾症患儿加速康复中的应用效果。方法:便利选取云南省某三级综合医院儿科住院手术的92例鼾症患儿为研究对象,随机将其分为对照组和研究组,各46例。对照组予以常规营养管理模式,研究组予以规范化H2H营养管理模式,对比两组患儿的营养状况及护理满意度。结果:研究组较对照组的营养状况好,护理满意度评分高(P<0.05)。结论:在鼾症患儿手术治疗后的加速康复护理中,运用规范化H2H营养管理模式,可使患儿获得个体化、针对性的营养护理指导,使得患儿的体格发育和营养状况得到较大的改善,有利于患儿的身心健康,同时可获得较好的护理满意度,值得进一步推广应用。
文摘以2-溴乙酸、壳聚糖、2-硫代四氢咪唑啉酮为原料,合成了不同接枝率的壳聚糖g--N-羧甲基-2-硫代-4,5-2H咪唑啉酮(CTS-g-CSIDZ),并对其理化性质进行了考察。用配合滴定法测定了该聚合物对Cd2+、CrO42-、Fe3+、Cu2+、Pb2+等重金属离子的吸附作用;进行了聚合物的悬菌定量实验,测定了接枝聚合物对一系列细菌的抑菌能力;采用失重法研究了合成的聚合物在1 mol/L HC l溶液中对N80钢片腐蚀的抑制作用。结果表明,部分接枝的CSIDZ比小分子化合物具有更高的对测试的多数金属离子吸附作用的热稳定性;接枝CSIDZ具有较强的抑菌效果,最小抑菌浓度为5.10 g/L;接枝CSIDZ比小分子缓蚀剂具有更高的热稳定性,在90℃时对N80钢片的缓蚀效率仍然可以达到71.1%,且用量仅为小分子化合物CSIDZ的1/2。
文摘The reaction of vinyl radicals with oxygen was investigated by Time-Resolved Fourier Transform infrared emission spectroscopy. The radicals were produced by the pulsed laser photolysis of C2H3Br at 248 nm. Vibrationally excited products of H2CO（v1）, HCO（v3）, CO2（v3, v）, CH3（v3）, C2H2（v3）, HO2（v1）, C2H2O2（v3+v11）, CO（v） formed in the C2H3+O2 reaction have been observed. Four elementary reaction channels have been verified.
文摘The elementary reaction of C2H3＋ NO has been reported for the first time in this paper.C2H3 radical was produced by laser photolysis of vinyl bromide at 248 nm.Vibrationally excited reaction products H2CO,NCO and HCN were observed.Two exothermic reaction channels leading to HCN＋ H2CO and CH3＋ NCO are identified.
文摘A new zinc hydrogen phosphite C4H8N2H4·Zn（HPO3）2 was prepared by hydrothermal method in the presence of piperazine as a structure-directing agent and the crystal structure was determined by single-crystal X-ray diffraction analysis and further characterized by X-ray powder diffraction, IR, ICP, elemental analysis and TG analysis. This compound has one-dimensional anionic chains containing four-membered rings built from corner-sharing linked alternating ZnO4 tetrahedra and HPO3 pseudo pyramids. The zinc hydrogen phosphite chains are interacted with the templates of diprotonated piperazine by N—H…O hydrogen bond. Crystal data for C4H8N2H4·Zn（HPO3）2∶monoclinic, space group C2/c. a=1.774 8（2） nm, b=0.724 28（9） nm, c=0.880 87（11） nm, β= 105.345（3）°, V=1.091 9（2） nm 3, Z=4, Dc=1^907 Mg/m 3, R1=0.022 9, wR2=0.058 8.
