A simple and fast route for the synthesis of metal-organic framework（MOF） particles was presented.Cu 3（BTC） 2（HKUST-1,BTC=1,3,5-benzenetricarboxylate）,one of the most well-known MOFs,was synthesized at room temp...A simple and fast route for the synthesis of metal-organic framework（MOF） particles was presented.Cu 3（BTC） 2（HKUST-1,BTC=1,3,5-benzenetricarboxylate）,one of the most well-known MOFs,was synthesized at room temperature via coordination modulation method.By adding different modulators（monocarboxylic acids） into the reaction system,the morphologies of HKUST-1 crystals were tuned from nano spheres to micro octahedrons at room temperature without any complex equipment.X-Ray diffractions and gas sorption measurements revealed highly crystalline particles with large Brunauer-Emmett-Teller（BET） surface areas（1116―1273 m^ 2 /g） and total pore volumes（0.62―0.73 cm^ 3 /g）.The significantly small particle sizes and high capacity of gas sorption are considered advantageous for envisaged application in practical industrial process.展开更多
Objective： To study the expressions of （CSC）, bladder transitional cell cancer metallothionein and the significances in cervical squamous cell cancer （BTC）, esophageal squamous cell cancer （ESC）, gastral tubula...Objective： To study the expressions of （CSC）, bladder transitional cell cancer metallothionein and the significances in cervical squamous cell cancer （BTC）, esophageal squamous cell cancer （ESC）, gastral tubular adenocarcinoma （GC） and large intestinal tubular adenocarcinoma （LIC）. Methods： lmmunohistochemical method was used to examine the expression rates of MT in five types of cancer tissue. Results： The expression rates of MT were 75.00% （24/32） in ESC, 52.27% （46/88） in GTC, 59.46% （44/74） in LIC, 64.86% （48/74） in BTC and 58.57% （41/70） in CSC respectively. The positive rates of MT expression were higher in low differentiation and deep muscular group than those in medium or high differentiation and superficial muscular invasion group （P〈0.05）. Conclusion： The expression of MT is related to differentiation degree and invasion degree.展开更多
基金Supported by the National Natural Science Foundation of China(Nos.21173034,20907006)
文摘A simple and fast route for the synthesis of metal-organic framework（MOF） particles was presented.Cu 3（BTC） 2（HKUST-1,BTC=1,3,5-benzenetricarboxylate）,one of the most well-known MOFs,was synthesized at room temperature via coordination modulation method.By adding different modulators（monocarboxylic acids） into the reaction system,the morphologies of HKUST-1 crystals were tuned from nano spheres to micro octahedrons at room temperature without any complex equipment.X-Ray diffractions and gas sorption measurements revealed highly crystalline particles with large Brunauer-Emmett-Teller（BET） surface areas（1116―1273 m^ 2 /g） and total pore volumes（0.62―0.73 cm^ 3 /g）.The significantly small particle sizes and high capacity of gas sorption are considered advantageous for envisaged application in practical industrial process.
文摘为了满足中俄东线天然气管道工程380×10~8 m^3/a超大输气量的要求,大口径、厚壁、高钢级钢管便成为了主要选择。为此,结合该管道工程用外径为1 422 mm的X80钢管材技术条件的研究制订过程,对国内外管线钢管技术标准进行了对比分析,同时对外径为1 422 mm X80钢管材技术条件中的化学成分和止裂韧性等关键技术指标及制订过程进行了分析探讨,并对外径为1 422 mm X80钢管的开发过程及产品性能进行了介绍。通过生产试制和产品检测,证明现有技术条件合理有效地解决了化学成分控制、断裂控制、产品焊接稳定性等技术问题,不仅满足了工程要求,而且也适应生产情况,可以保障中俄东线天然气管道的本质安全。该研究成果可为中俄东线建设外径为1 422 mm X80钢天然气管道提供技术支撑,同时对于其他天然气管道工程技术条件的制订也具有指导意义。
文摘Objective： To study the expressions of （CSC）, bladder transitional cell cancer metallothionein and the significances in cervical squamous cell cancer （BTC）, esophageal squamous cell cancer （ESC）, gastral tubular adenocarcinoma （GC） and large intestinal tubular adenocarcinoma （LIC）. Methods： lmmunohistochemical method was used to examine the expression rates of MT in five types of cancer tissue. Results： The expression rates of MT were 75.00% （24/32） in ESC, 52.27% （46/88） in GTC, 59.46% （44/74） in LIC, 64.86% （48/74） in BTC and 58.57% （41/70） in CSC respectively. The positive rates of MT expression were higher in low differentiation and deep muscular group than those in medium or high differentiation and superficial muscular invasion group （P〈0.05）. Conclusion： The expression of MT is related to differentiation degree and invasion degree.
