搜索结果: 61-75 共查到“理学 pH”相关记录291条 . 查询时间(0.078 秒)
Study of the combined effect of temperature, pH and water activity on the radial growth rate of the white-rot basidiomycete Physisporinus vitreus by using a hyphal growth model
filamentous fungus, fungal colony, mycelia modelling, wood decay fungus
2011/9/5
The present work investigates environmental effects on the growth of fungal colonies of P. vitreus by using a lattice-free discrete modelling approach called FGM (Fuhr & Schubert,2010, arXiv:1101.1747...
保卫细胞壁的特性对气孔运动有重要的影响. 以前的研究多集中于保卫细胞壁的解剖结构, 对气孔运动中保卫细胞壁物理性质的改变了解很少. 本研究以蚕豆叶片表皮条为材料,运用细胞压力探针技术, 对气孔运动中不同pH下的保卫细胞壁弹性模量(ε)进行了测量. 研究发现, 当pH 从8.60 降至6.50 时, 保卫细胞壁的弹性模量从7.098 Pa 降至5.690 Pa. 气孔运动中, 较低的保卫细胞壁弹性模...
Biosorption of Ag(I)-Spirulina platensis for different pH were investigated using dialysis and Atomic-absorbtion analysis. It was shown, that the biosorption constant for Ag(I) Spirulina platensis com...
Effects of pH, ionic strength, temperature, and humic acid on Eu(III) sorption onto iron oxides
Iron oxides Eu(III) Sorption HA Temperature
2011/11/10
Effects of pH, Eu(III) concentration, ionic strength, temperature and humic acid (HA) on Eu(III) sorption to iron oxides were investigated in detail. The sorption of Eu(III) to iron oxides was signifi...
Sorption of uranium(VI) on Na-attapulgite as a function of contact time, solid content, pH, ionic strength, temperature and humic acid
Attapulgite U(VI) Sorption pH Ionic strength Temperature
2011/11/10
Sorption of U(VI) from aqueous solution to Na-attapulgite was investigated at different experimental chemistry conditions by using batch technique. The attapulgite sample was characterized by FTIR and...
pH值对水热合成纳米钒酸铟的影响及表征
纳米InVO4 水热法 pH值的影响
2012/11/23
探讨了pH值对水热法合成纳米InVO4的影响.以InCl3、NH4VO3为原料于150 ℃下反应4 h，水热合成纳米InVO4，以NH3·H2O和盐酸调节反应体系的pH值，以XRD,FTIR为表征手段对产物进行表征，考察了反应体系pH值分别为6.0，7.0，8.0时对产物生成的影响.结果表明：pH值对纳米InVO4的生成具有影响，在pH值为7.0时，可制得纯度较高的正交相纳米InVO4，而pH为6...
pH区带精制逆流色谱法制备青风藤碱
广西地不容 青风藤碱 pH区带精制逆流色谱法
2012/3/21
采用pH区带精制逆流色谱法从广西地不容中制备青风藤碱，溶剂系统为石油醚乙酸乙酯甲醇水（3:7:1:9,V/V），上相加10 mmol/L三乙胺为固定相，下相加10 mmol/L盐酸为流动相。一次进样1.0 g，可得纯度为99.5%的青风藤碱600 mg，所得产物经ESI-MS，1H NMR和13C NMR进行结构鉴定。本方法效率高，制品纯度高，适合青风藤碱的大量制备。
环境pH值条件的变化是影响土壤胶体运移的重要因素之一.本文选取土壤体系中常见的两种不同结构类型的粘土矿物胶体高岭石和蒙脱石作为主要实验材料,通过室内模拟实验和数学模型分析的手段,分别研究了不同pH值条件下,两种无机胶体在多孔介质中的迁移规律.结果表明:高岭石胶体受溶液的pH条件影响强烈,随着pH的变化,ξ电位及颗粒粒径大小发生明显变化,不同的pH条件下的穿透曲线差异明显.在酸性条件下,高岭石胶体回...
Sorption study of radionickel on attapulgite as a function of pH, ionic strength and temperature
Attapulgite Radionickel pH Temperature Thermodynamic data
2011/11/10
Sorption of radionickel on attapulgite is studied as a function of contact time, ionic strength, pH and temperature. The results indicate that the sorption of Ni(II) on attapulgite is strongly ionic s...
A pH-Sensitive Composite Hydrogel Based on Sodium Alginate and Medical Stone:Synthesis, Swelling, and Heavy Metal Ions Adsorption Properties
composite hydrogel sodium alginate medical stone swelling adsorption pH-sensitivity
2011/12/14
New pH-sensitive composite hydrogels were synthesized by free-radical graft copolymerization among sodium alginate (NaAlg), sodium acrylate (NaA), and medical stone (MS). Fourier transform infrared sp...
Iron dissolution kinetics of mineral dust at low pH during simulated atmospheric processing
mineral dust low pH simulated atmospheric processing
2011/2/25
We investigated the iron (Fe) dissolution kinetics of African (Tibesti) and Asian (Beijing) dust samples at acidic pH with the aim of reproducing the low pH conditions in atmospheric aerosols. The Bei...
不同NFC/NDF比对奶山羊瘤胃微生物及瘤胃pH变化的影响
NFC/NDF比 亚急性瘤胃酸中毒 瘤胃微生物 瘤胃pH
2011/8/16
本试验研究了在不同非纤维性碳水化合物/中性洗涤纤维（NFC/NDF）比饲粮条件下诱发奶山羊亚急性瘤胃酸中毒（subacute ruminal acidosis，SARA）过程中瘤胃微生物区系和瘤胃pH的变化。选用6只安装了永久性瘤胃瘘管的泌乳期关中奶山羊为试验动物，采用自身对照试验法，共分4期进行，每期10 d，依次饲喂NFC/NDF比为102(Ⅰ期)、124(Ⅱ期)、163(Ⅲ期)、25...
A pH-, salt- and solvent-responsive carboxymethylcellulose-g-poly(sodium acrylate)/medical stone superabsorbent composite with enhanced swelling and responsive properties
polymer composites carboxymethylcellulose medical stone superabsorbent smart-responsive swelling
2011/12/13
Free-radical graft copolymerization among sodium carboxymethylcellulose (CMC), partially neutralized acrylic acid (NaA), medical stone (MS) and crosslinker N,N!-methylene-bis-acrylamide (MBA) was perf...
A pH-, salt- and solvent-responsive carboxymethylcellulose-g-poly(sodium acrylate)/medical stone superabsorbent composite with enhanced swelling and responsive properties
polymer composites carboxymethylcellulose medical stone superabsorbent smart-responsive swelling
2011/12/14
Free-radical graft copolymerization among sodium carboxymethylcellulose (CMC), partially neutralized acrylic acid (NaA), medical stone (MS) and crosslinker N,N!-methylene-bis-acrylamide (MBA) was perf...
Towards Biochemical Filter with Sigmoidal Response to pH Changes: Buffered Biocatalytic Signal Transduction
Towards Biochemical Sigmoidal Response Buffered Biocatalytic Signal Transduction
2010/11/22
We realize a biochemical filtering process based on the introduction of a small quantity
of a buffer in a biocatalytic signal-transduction logic system based on the function of an
enzyme, esterase. ...