Two new diaryquioxaline derivatives, C21H10N2S3Br2（1） and C21H10Br2 N2OS2（2）,have been successfully synthesized. These two compounds have been determined by single-crystal X-ray diffraction analyses. Compound 1 cr...Two new diaryquioxaline derivatives, C21H10N2S3Br2（1） and C21H10Br2 N2OS2（2）,have been successfully synthesized. These two compounds have been determined by single-crystal X-ray diffraction analyses. Compound 1 crystallizes in monoclinic system, space group P21/n with a = 12.7896（3）, b = 6.0613（2）, c = 26.1153（7） ?, β = 94.1810（10）°, V = 2018.（97） ?3, Z = 4,C21H10N2S3Br2, Mr = 546.32, Dc = 1.797 g/cm3 and F（000） = 1072. The final R = 0.0343 and wR =0.785 for 3585 observed reflections with I > 2σ（I）. Compound 2 crystallizes in monoclinic system,space group P21/n with a = 7.8638（4）, b = 14.3447（7）, c = 17.8936（8） ?, β = 96.6980（10）°, V =2004.69（17） ?3, Z = 4, C21H10Br2 N2OS2, Mr = 530.25, Dc = 1.757 g/cm3 and F（000） = 1040. The final R = 0.0988 and wR = 0.1108 for 4613 observed reflections with I > 2σ（I）. By combination of diarylquinoxaline core and a 1,3-dithiole-2-thione unit, compound 1 is used as "turn on"chemosensors for Hg2+ by making use of the aggregation-induced emission（AIE） feature of diarylquinoxaline core and the specific reaction of 1,3-dithiole-2-thione with Hg2+.展开更多
目的探讨磁共振胆胰管成像(MRCP)测量急性胰腺炎(AP)胰胆管汇合夹角的临床价值。方法 选择10例AP(A组)患者、10例胰胆管疾病患者(B组)和10例健康体检者(C组),分别行MRCP检查。观察3组胰胆管汇合夹角、胰胆管汇合类型的所占比例,并对AP...目的探讨磁共振胆胰管成像(MRCP)测量急性胰腺炎(AP)胰胆管汇合夹角的临床价值。方法 选择10例AP(A组)患者、10例胰胆管疾病患者(B组)和10例健康体检者(C组),分别行MRCP检查。观察3组胰胆管汇合夹角、胰胆管汇合类型的所占比例,并对AP与胰胆管汇合夹角进行相关性分析。结果 A、B、C 3组胰胆管汇合夹角分别为(63.19±14.84)°、(60.29±16.32)°和(50.37±15.46)°。A、B 2组胰胆管汇合夹角大于C组,差异有统计学意义( P <0.05)。A组胰胆管汇合类型为Ⅴ型、B-P型所占比例均高于B组,胰胆管汇合类型为P-B型所占比例低于B组,差异有统计学意义( P <0.05);C组胰胆管汇合类型为Ⅴ型所占比例高于A、B 2组,胰胆管汇合类型为B-P型、P-B型所占比例均低于A、B 2组,差异有统计学意义( P <0.05)。相关性分析结果显示,AP与胰胆管汇合夹角呈正相关( r =8.401, P <0.05)。结论 MRCP显示的汇合类型和胰胆管汇合夹角是临床诊断AP的重要指标。展开更多
Poverty alleviation through tourism has become one of the most important strategies in the battle against poverty. Under the eco-economic environment which is increasingly attached great importance to, the development...Poverty alleviation through tourism has become one of the most important strategies in the battle against poverty. Under the eco-economic environment which is increasingly attached great importance to, the development path of poverty alleviation through tourism needs to be reconsidered. Based on the intrinsic relationship between eco-economy and poverty alleviation through tourism, the existing problems in the development process of poverty alleviation through tourism, and a development path of poverty alleviation through tourism is constructed in five aspects, namely, building an ecological anti-poverty and mutual aid system, innovating the development of tourism product, forming an ecological poverty alleviation mechanism, lifting the poor out of poverty with dignity, and building a good ecological governance.展开更多
基金supported by the National Natural Science Foundation of China(21372136)
文摘Two new diaryquioxaline derivatives, C21H10N2S3Br2（1） and C21H10Br2 N2OS2（2）,have been successfully synthesized. These two compounds have been determined by single-crystal X-ray diffraction analyses. Compound 1 crystallizes in monoclinic system, space group P21/n with a = 12.7896（3）, b = 6.0613（2）, c = 26.1153（7） ?, β = 94.1810（10）°, V = 2018.（97） ?3, Z = 4,C21H10N2S3Br2, Mr = 546.32, Dc = 1.797 g/cm3 and F（000） = 1072. The final R = 0.0343 and wR =0.785 for 3585 observed reflections with I > 2σ（I）. Compound 2 crystallizes in monoclinic system,space group P21/n with a = 7.8638（4）, b = 14.3447（7）, c = 17.8936（8） ?, β = 96.6980（10）°, V =2004.69（17） ?3, Z = 4, C21H10Br2 N2OS2, Mr = 530.25, Dc = 1.757 g/cm3 and F（000） = 1040. The final R = 0.0988 and wR = 0.1108 for 4613 observed reflections with I > 2σ（I）. By combination of diarylquinoxaline core and a 1,3-dithiole-2-thione unit, compound 1 is used as "turn on"chemosensors for Hg2+ by making use of the aggregation-induced emission（AIE） feature of diarylquinoxaline core and the specific reaction of 1,3-dithiole-2-thione with Hg2+.
文摘目的探讨磁共振胆胰管成像(MRCP)测量急性胰腺炎(AP)胰胆管汇合夹角的临床价值。方法 选择10例AP(A组)患者、10例胰胆管疾病患者(B组)和10例健康体检者(C组),分别行MRCP检查。观察3组胰胆管汇合夹角、胰胆管汇合类型的所占比例,并对AP与胰胆管汇合夹角进行相关性分析。结果 A、B、C 3组胰胆管汇合夹角分别为(63.19±14.84)°、(60.29±16.32)°和(50.37±15.46)°。A、B 2组胰胆管汇合夹角大于C组,差异有统计学意义( P <0.05)。A组胰胆管汇合类型为Ⅴ型、B-P型所占比例均高于B组,胰胆管汇合类型为P-B型所占比例低于B组,差异有统计学意义( P <0.05);C组胰胆管汇合类型为Ⅴ型所占比例高于A、B 2组,胰胆管汇合类型为B-P型、P-B型所占比例均低于A、B 2组,差异有统计学意义( P <0.05)。相关性分析结果显示,AP与胰胆管汇合夹角呈正相关( r =8.401, P <0.05)。结论 MRCP显示的汇合类型和胰胆管汇合夹角是临床诊断AP的重要指标。
文摘Poverty alleviation through tourism has become one of the most important strategies in the battle against poverty. Under the eco-economic environment which is increasingly attached great importance to, the development path of poverty alleviation through tourism needs to be reconsidered. Based on the intrinsic relationship between eco-economy and poverty alleviation through tourism, the existing problems in the development process of poverty alleviation through tourism, and a development path of poverty alleviation through tourism is constructed in five aspects, namely, building an ecological anti-poverty and mutual aid system, innovating the development of tourism product, forming an ecological poverty alleviation mechanism, lifting the poor out of poverty with dignity, and building a good ecological governance.
