检索结果-南通市图书馆

Journal of Environmental Sciences 2021年第1期33卷 143-150页

作者： Jian Zhou Xiaoxia Han Boqiang Qin Guangwei Zhu Taihu Laboratory for Lake Ecosystem Research State Key Laboratory of Lake Science and EnuvironmentNanjing Institute of Geography and LimnologyChinese Academy of SciencesNanjing 210008China Laboratory and Analytical Testing Center Jiangsu Academy of Enuironmental Sciences Environmental Technology Co.LtdNanjing 210036China School of Geography and Ocean Science Nanjing UniversityNanjing 210023China

Phosphorus is a vital nutrient for algal growth,thus,a better understanding of phosphorus availability is essential to mitigate harmful algal blooms in *** waves are a ubiquitous characteristic of lake ***,its effects on the cycling of organic phosphorus and its usage by phytoplankton remain poorly elucidated in shallow eutrophic lakes.A mesocosm experiment was carried out to investigate the responses of alkaline phosphatase activity fractions to wind waves in large,shallow,eutrophic Lake *** showed that wind-driven waves induced the release of alkaline phosphatase and phosphorus from the sediment,and dramatically enhanced phytoplanktonic alkaline phosphatase ***,compared to the calm conditions,bacterial and dissolved alkaline phosphatase activity decreased in wind-wave ***,the gene copies of Microcystis phoX increased but bacterial phoX decreased under wind-wave *** ecological effects of these waves on phosphorus and phytoplankton likely accelerated the biogeochemical cycling of phosphorus and promoted phytoplankton production in Lake *** study provides an improved current understanding of phosphorus availability and the phosphorus strategies of plankton in shallow,eutrophic lakes.

关键词： Wind waves alkaline phosphatase activity Phosphorus Plankton phoX

维普期刊数据库

Effect of dissolved phosphorus on alkaline phosphatase activity in marine microalgae

在线全文

学校读者我要写书评

暂无评论

Acta Oceanologica Sinica 2000年第2期19卷 29-35页

作者： Huang Bangqin1,2 Huang Shiyu3 Weng Yan2 Hong Huasheng1,2 (1. Research Laboratory of SEDC on Marine Ecological Environment, Xiamen University, Xiamen 361005, China 2. Environmental Science Research Center, Xiamen University, Xiamen 361005, China 3. Fis Res. Lab. of SEDC on Mar. Eco. Env Xiamen University Xiamen 361005 China

alkaline phosphatase activity (APA) and dissolved phosphorus were monitored during the batch cultures of two bone microalgae. Results indicate that variation of APA was in the shape of 'S' curve. Different specs of dissolved phaphorus had different effects on APA. The concentrations of dis solved inorganic phosphorus (DIP) and and molecular dissolved organic phosphorus (SDOP) had a sig nificant effect on APA, while the concentration of large molecular dissolved organic phosphorus (LDOP) had a little effect on APA., and the increase of APA could accelerate the decomposing of LDOP in the medium. Results also show that algae species and abundance had why a little effect on APA.

关键词： alkaline phosphatase activity dissolved inorganic phosphorus small molecular dissolved or ganic phophorus large molecular dissolved organic phosphorus microalgae

维普期刊数据库

Osteogenic lithium-doped brushite cements for bone regeneration

在线全文

学校读者我要写书评

暂无评论

Bioactive Materials 2022年第10期7卷 403-417页

作者： K.Hurle F.R.Maia V.P.Ribeiro S.Pina J.M.Oliveira F.Goetz-Neunhoeffer R.L.Reis GeoZentrum Nordbayern MineralogyFriedrich-Alexander University Erlangen-Nürnberg(FAU)91054ErlangenGermany B’s Research Group I3Bs–Research Institute on BiomaterialsBiodegradables and BiomimeticsUniversity of MinhoHeadquarters of the European Institute of Excellence on Tissue Engineering and Regenerative MedicineAveParkParque de Ciˆencia e TecnologiaZona Industrial da Gandra4805-017BarcoGuimar˜aesPortugal ICVS/3B’s–PT Government Associate Laboratory BragaGuimar˜aesPortugal

This study investigated the osteogenic performance of new brushite cements obtained from Li+-dopedβ-tricalcium phosphate as a promising strategy for bone ***(Li+)is a promising trace element to encourage the migration and proliferation of adipose-derived stem cells(hASCs)and the osteogenic differentiation-related gene expression,essential for ***-situ X-ray diffraction(XRD)and in-situ 1H nuclear magnetic resonance(1H NMR)measurements proved the precipitation of brushite,as main phase,and monetite,indicating that Li+favored the formation of monetite under certain ***+was detected in the remaining pore solution in significant amounts after the completion of *** calorimetry results showed an accelerating effect of Li+,especially for low concentration of the setting retarder(phytic acid).A decrease of initial and final setting times with increasing amount of Li+was detected and setting times could be well adjusted by varying the setting retarder *** cements presented compressive mechanical strength within the ranges reported for cancellous *** vitro assays using hASCs showed normal metabolic and proliferative *** immunodetection and gene expression profile of osteogenic-related markers highlight the incorporation of Li+for increasing the in vivo bone *** osteogenic potential of Li-doped brushite cements may be recommended for further research on bone defect repair strategies.

关键词： Lithium doping β-tricalcium phosphate Brushite cements alkaline phosphatase activity Collagen expression Osteogenic expression Bone regeneration

ALP　Induction　by　β－glycerophosphate　during　the　Nonmineralization　Phase　In　Vitro

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Huazhong University of Science and Technology(Medical Sciences) 1996年第1期16卷 20-24页

作者：陈璐璐 Department of Endocrinology Xiehe Hospital Tongji Medical University Wuhan

β-GP influences on rat osteoblast development at the early period of culture i.e , the non-mineralization phase, and changes with the different cell passages were investigated. alkaline phosphatase (ALP) was chosen as a main object. Northern blot analysis revealed up to two-fold increase in the steady statelevel of ALP mRNA after stimulation of rat osteoblast with 10 mM β-GP- Likewise, 10 mM β-GP induced a 10─30 % increase in ALP activity (Pactivity was totally inhibited by the protein synthesis inhibitor, cycloheximide (50 μM).β- GP stimulation was found to be without effect on cell proliferation measured as 3H-thymidine incorporation. It is concluded that β-GP has no effect on proliferation but induces an increase in both mRNA level and activity of ALP in the non-mineralization phase of cultures of fetal rat calvarial cells , which lasts for several passages but will disappear in older cultures.

关键词： fetal rat calvarial cells β-glycerophosphate alkaline phosphatase activity Mineralization

维普期刊数据库

在线全文

学校读者我要写书评

暂无评论

小儿手术后白细胞碱性磷酸酶活性的变化

中华小儿外科杂志 1981年第3期2卷 154-155页

作者：郑玉衡叶裕春丁其珍佘亚雄上海第二医学院附属新华医院小儿外科上海市儿科研究所

成人选择性手术后的白细胞碱性磷酸酶(简称LAP)活性变化,有较明确的变化(1),对了解术后病程,有一定的临床意义.目前,尚未见小儿手术后LAP活性变化的报导.本文应用细胞化学法,对经受各种外科手术的小儿病例,进行了LAP活性的观察,借以了解... 详细信息

成人选择性手术后的白细胞碱性磷酸酶(简称LAP)活性变化,有较明确的变化(1),对了解术后病程,有一定的临床意义.目前,尚未见小儿手术后LAP活性变化的报导.本文应用细胞化学法,对经受各种外科手术的小儿病例,进行了LAP活性的观察,借以了解LAP在小儿手术后变化和观察LAP活性在辅助诊断术后感染中的作用.

关键词：小儿手术后白细胞碱性磷酸酶活性 alkaline phosphatase activity 活性变化 LAP 外科手术术后感染术后变化临床意义辅助诊断选择性化学法成人病例病程