Results 1 to 10 of about 2,782 (82)

Effect of Phosphorylation on Calcium-Binding Ability of Silkworm Pupa Polypeptide(磷酸化处理对蚕蛹多肽结合钙能力的影响) [PDF]

open access: yesShipin kexue jishu xuebao, 2021
To study the improvement of phosphorylation on calcium-binding ability of polypeptide, silkworm pupa polypeptide was phosphorylated by different kinds of phosphorylation reagents with diverse additive volume, then reacted with CaCl2 to prepare calcium ...
WANG Siyuan(王思远)   +5 more
doaj   +1 more source

Effects of different phosphate fertilizers on the availability and bioaccumulation of cadmium in the tea garden soil(磷肥对茶园土壤中镉有效性及其生物累积的影响)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2015
通过温室盆栽试验,研究了在不同培养期内(1,2和4个月),不同磷肥(过磷酸钙、磷酸二氢钾、钙镁磷肥)及施磷量(P2O5 0.2,0.5 g • kg-1)对镉污染茶园土壤pH值、土壤有效态镉含量及茶树镉吸收累积量的影响.结果表明:钙镁磷肥的施加可有效提高茶园土壤的pH值,过磷酸钙和磷酸二氢钾对pH值的提高则不明显;过磷酸钙和钙镁磷肥均提高了 土壤有效态镉含量,且施磷量不同影响规律亦不同,而磷酸二氢钾对土壤有效态镉含量的影响不显著;茶树累积镉含量为根>茎>叶,根系对镉的富集能力极强 ...
LUYYamin(吕亚敏)   +3 more
doaj   +1 more source

聚合物磷酸钙分散剂述评

open access: yesGongye shui chuli, 2006
如何在冷却水中控制磷酸钙垢已变得更为重要。在过去的三十年间人们已经开发了许许多多能控制和分散磷酸钙垢的均聚物、二元和三元共聚物;研究了聚合物磷酸钙分散剂的结构/性能关系;并探讨了悬浮物及金属离子对它们用于磷系配方时的影响。简略回顾了聚合物磷酸钙分散剂的开发过程,报道了磷酸钙分散剂目前的性能与水平,并探讨了它的发展趋势。
鲍其鼐
doaj   +2 more sources

聚天冬氨酸共聚物阻磷酸钙垢性能研究

open access: yesGongye shui chuli, 2016
以天冬氨酸(ASP)、2-氨基乙磺酸(AESA)、氢氧化钠等为原料制备了一种无磷环保型阻垢剂聚天冬氨酸共聚物(PASP-AESA-ASP),采取静态阻垢法考察了其阻磷酸钙垢性能,用扫描电子显微镜观察了加入聚天冬氨酸共聚物后形成的磷酸钙形貌。实验结果表明,聚天冬氨酸共聚物阻磷酸钙垢的性能明显高于聚天冬氨酸,在加药量为6 mg/L时,比聚天冬氨酸的阻垢率提高了86%;对不同磷酸钙离子浓度的阻垢率也均有很好的效果,在加药量为14 mg/L时,聚天冬氨酸共聚物的阻垢率均达到了91%以上,当PO43-为10 mg/
高玉华   +4 more
doaj   +2 more sources

Pinus armandii ectomycorrhizas mobilize aluminium‐bound phosphorus via carboxylates along a subtropical altitudinal gradient

open access: yesJournal of Ecology, Volume 114, Issue 8, August 2026.
Ectomycorrhizal roots of Pinus armandii release more carboxylates than non‐mycorrhizal root segments, mobilizing Al‐bound inorganic P. Under the lowest available P conditions, they also secrete more phosphatase, promoting the mineralization of Al‐bound organic P.
Jun Zhou   +7 more
wiley   +1 more source

污水磷回收中磷酸盐沉淀法的影响因素及应用

open access: yesGongye shui chuli, 2006
磷是一种不可再生、十分有限的资源,它的回收再利用已成为水处理工业关注的焦点。污水中的磷可以以磷酸盐沉淀的形式回收,其中以鸟粪石和磷酸钙的形式从污水中回收磷被认为是最具有前景的磷回收途径。作者对生成鸟粪石和磷酸钙的主要影响因素及鸟粪石和磷酸钙沉淀法在污水磷回收中的应用作了全面的概述,并对存在的问题作了简要分析。
陈瑶   +4 more
doaj   +2 more sources

Elevation, soil pH and calcium availability shape regional and local scale spatial patterns of PhoD gene abundance in tropical and subtropical forests

open access: yesFunctional Ecology, Volume 40, Issue 4, Page 983-1000, April 2026.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Organic phosphorus mineralization is a critical process in the phosphorus cycle, governing phosphorus bioavailability for plants. The PhoD gene, which encodes the key enzyme alkaline phosphatase, serves as a valuable biomarker for this process.
Sandhya Mishra   +3 more
wiley   +1 more source

Changing plant phosphorus acquisition strategies in relation to altered soil phosphorus fractions after wetland drainage

open access: yesFunctional Ecology, Volume 38, Issue 11, Page 2433-2446, November 2024.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Plant phosphorus (P) acquisition strategy is considered to be an intrinsic driver behind plant succession. However, variations in plant P acquisition strategies in connection to soil P fraction changes after wetland drainage remain unclear.
Zhenhui Jiang   +6 more
wiley   +1 more source

改性胶原蛋白阻垢剂的制备及阻磷酸钙垢性能

open access: yesGongye shui chuli, 2013
对铬鞣废弃革屑水解提取的蛋白进行羧基化改性,可制得一种蛋白基的新型阻垢剂。使用该阻垢剂对模拟碱性水进行阻磷酸钙垢实验,考察了阻垢剂结构、用量对阻磷酸钙垢率的影响。实验结果表明,这类改性胶原蛋白阻垢剂具有优异的阻磷酸钙垢的性能,SEM分析显示,在磷酸钙垢形成过程中,分散作用以及对晶格的畸变效应是阻垢的主要机制。
强西怀   +4 more
doaj   +2 more sources

聚羧酸系无磷阻垢剂阻磷酸钙垢的对比研究

open access: yesGongye shui chuli, 2015
羧酸系阻垢剂具有对水环境无磷污染优势。通过实验对新型聚醚型羧酸系共聚物马来酸酐-烯丙氧基聚乙烯氧基羧酸钠(MA-APEC)、丙烯酸-烯丙氧基聚乙烯氧基羧酸钠(AA-APEC)及羧酸系聚合物水解聚马来酸酐、聚丙烯酸、丙烯酸/丙烯酸羟丙酯的阻磷酸钙垢能力进行了对比研究。实验结果显示, 5种阻垢剂均可使磷酸钙晶体形貌发生改变, 但拥有强亲水性聚乙烯氧基链段的聚合物MA-APEC和AA-APEC具有更优异的阻磷酸钙垢能力。
符嫦娥   +5 more
doaj   +2 more sources

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