Comparison of the ATR-FITR spectra of nature and artificial leather shows that their feature peak positions do not overlap,By analysing their spectra and their corresponding second derivative infrared spectra we can d...Comparison of the ATR-FITR spectra of nature and artificial leather shows that their feature peak positions do not overlap,By analysing their spectra and their corresponding second derivative infrared spectra we can discriminate them easily.Analysis and discrimination of leather products by ATR-FTIR is an accurate,sensitive,quick method.展开更多
The hydrophobically associating copolymers,poly(BS/AM/DMDAAC)(PBAD) were synthesized from acrylamide (AM),butyl styrene (BS) and dimethyldiallyammonium chloride (DMDAAC) by the micellar free radical copolymerization t...The hydrophobically associating copolymers,poly(BS/AM/DMDAAC)(PBAD) were synthesized from acrylamide (AM),butyl styrene (BS) and dimethyldiallyammonium chloride (DMDAAC) by the micellar free radical copolymerization technique.The copolymers were characterized with UV and FT-IR.The atomic force microscope(AFM) measurement showed that aggregates had been formed in the aqueous solution of 0.005 g.dl -1 PBAD, and with the increase of PBAD concentration, the number and size of aggregates increased due to the intermolecular hydrophobic association of butylphenyl groups.The optimum flocculant concentration of PBAD was 0.005 g·dl -1 in the aqueous solution of 3% diatomite and the transmittance was 96.5%.The NaCl concentration obviously influenced the bridging and adsorption behavior of the copolymer for celite suspensions, and calcium and aluminium ions strengthened the flocculation effect of the polymer.展开更多
目的:STAT(signal transducer and activators of transcription)是一种重要的细胞质转录因子,在恶性肿瘤的发生、增殖和凋亡中发挥着重要作用。本研究旨在探讨STAT3单核苷酸多态性(single nucleotide polymorphisms,SNP)与胃癌生物学...目的:STAT(signal transducer and activators of transcription)是一种重要的细胞质转录因子,在恶性肿瘤的发生、增殖和凋亡中发挥着重要作用。本研究旨在探讨STAT3单核苷酸多态性(single nucleotide polymorphisms,SNP)与胃癌生物学行为的关系。方法:运用SYBR GREEN PCR熔解曲线法检测93例胃癌患者的STAT3SNP。结果:随机抽取18例胃癌患者以基因测序检测STAT3SNP,结果与SYBR GREEN PCR熔解曲线法完全相同。含有G等位基因的CG+GG基因型相对于CC基因型,脉管侵犯以及神经侵犯差异性显著(P<0.001)。结论:SYBR GREEN PCR熔解曲线法可以作为检测STAT3SNP方法之一。STAT3SNP与胃癌的某些生物学行为相关,该位点为G等位基因提示肿瘤脉管侵犯、神经侵犯高风险。展开更多
The acrylic resin round particles with good luminous properties was synthesized with methyl methacrylate and ethyl acrylate monomers and luminous substance as row material.The influence of every reaction condition on ...The acrylic resin round particles with good luminous properties was synthesized with methyl methacrylate and ethyl acrylate monomers and luminous substance as row material.The influence of every reaction condition on the properties of round particles was discussed.展开更多
文摘Comparison of the ATR-FITR spectra of nature and artificial leather shows that their feature peak positions do not overlap,By analysing their spectra and their corresponding second derivative infrared spectra we can discriminate them easily.Analysis and discrimination of leather products by ATR-FTIR is an accurate,sensitive,quick method.
文摘The hydrophobically associating copolymers,poly(BS/AM/DMDAAC)(PBAD) were synthesized from acrylamide (AM),butyl styrene (BS) and dimethyldiallyammonium chloride (DMDAAC) by the micellar free radical copolymerization technique.The copolymers were characterized with UV and FT-IR.The atomic force microscope(AFM) measurement showed that aggregates had been formed in the aqueous solution of 0.005 g.dl -1 PBAD, and with the increase of PBAD concentration, the number and size of aggregates increased due to the intermolecular hydrophobic association of butylphenyl groups.The optimum flocculant concentration of PBAD was 0.005 g·dl -1 in the aqueous solution of 3% diatomite and the transmittance was 96.5%.The NaCl concentration obviously influenced the bridging and adsorption behavior of the copolymer for celite suspensions, and calcium and aluminium ions strengthened the flocculation effect of the polymer.
文摘目的:STAT(signal transducer and activators of transcription)是一种重要的细胞质转录因子,在恶性肿瘤的发生、增殖和凋亡中发挥着重要作用。本研究旨在探讨STAT3单核苷酸多态性(single nucleotide polymorphisms,SNP)与胃癌生物学行为的关系。方法:运用SYBR GREEN PCR熔解曲线法检测93例胃癌患者的STAT3SNP。结果:随机抽取18例胃癌患者以基因测序检测STAT3SNP,结果与SYBR GREEN PCR熔解曲线法完全相同。含有G等位基因的CG+GG基因型相对于CC基因型,脉管侵犯以及神经侵犯差异性显著(P<0.001)。结论:SYBR GREEN PCR熔解曲线法可以作为检测STAT3SNP方法之一。STAT3SNP与胃癌的某些生物学行为相关,该位点为G等位基因提示肿瘤脉管侵犯、神经侵犯高风险。
文摘The acrylic resin round particles with good luminous properties was synthesized with methyl methacrylate and ethyl acrylate monomers and luminous substance as row material.The influence of every reaction condition on the properties of round particles was discussed.
