搜索结果: 1-15 共查到“理学 phosphate”相关记录59条 . 查询时间(0.079 秒)
Development and application of LC/HRPS for quantification of adenine nucleotides,creatine phosphate,and creatine in sturgeon spermatozoa
macroergic phosphates high resolution mass spectrometry extraction method validation sperm chondrostean fishes
2017/2/21
The objective of this study was to investigate the applicability of liquid chromatography coupled with high resolution product scan (LC/HRPS) mass spectrometry for simultaneous quantification of adeni...
Phosphate Vibrations Probe Local Electric Fields and Hydration in Biomolecules
Phosphates Water Phospholipids Spectrophotometry, Infrared Electricity Models, Molecular
2016/5/25
The role of electric fields in important biological processes such as binding and catalysis has been studied almost exclusively by computational methods. Experimental measurements of the local electri...
METABOLISM OF THE COVALENT PHOSPHATE IN GLYCOGEN
Glycogen phosphate Lafora disease laforin
2015/5/25
Glycogen is a highly branched polymer of glucose that functions to store glucose residues for future metabolic use. Skeletal muscle and liver comprise the largest glycogen reserves and play critical r...
Subcellular Characterization of Porcine Oocytes with Different Glucose-6-phosphate Dehydrogenase Activities
Brilliant Cresyl Blue Embryonic Development Subcellular Characteristics
2016/5/19
The in vitro maturation (IVM) efficiency of porcine embryos is still low because of poor oocyte quality. Although brilliant cresyl blue positive (BCB+) oocytes with low glucose-6-phosphate dehydrogena...
Thalassia testudinum phosphate uptake kinetics at low in situ concentrations using a 33 P radioisotope technique
Thalassia testudinum phosphate uptake situ concentrations
2014/4/23
A new 33
P-tracer technique was used to define low-level phosphate (Pi) uptake kinetics for a dominant tropical
seagrass, Thalassia testudinum. We established seagrass Pi uptake kinetics at hi...
High-spatial resolution U–Pb dating of phosphate minerals in Martian meteorite Allan Hills 84001
U–Pb dating phosphates NanoSIMS Martian meteorites ALH 84001
2017/4/11
Phosphate minerals, which are ubiquitous in terrestrial and extra-terrestrial rocks, are important carriers of trace elements,
including U and Th, which provide chronological information because of t...
Preparation of Calcium Phosphate with Oyster Shells
Calcium Phosphate Oyster Shells Calcium Carbonate Yield Powder Properties
2013/3/8
Oyster shells have received attention for use as a calcium resource. For this study, calcium phosphate was prepared from phosphoric acid and oyster shells. The influences of the concentration of phosp...
Enrichment of Phosphate on Ferrous Iron Phases during Bio-Reduction of Ferrihydrite
Phosphate Iron Reduction Ferrihydrite Ferrous Iron Vivianite
2013/3/7
The reduction of less stable ferric hydroxides and formation of ferrous phases is critical for the fate of phosphorus in anaerobic soils and sediments. The interaction between ferrous iron and phospha...
Different Phosphate Transport in the Duodenum and Jejunum of Chicken Response to Dietary Phosphate Adaptation
Chicken NaPi-IIb Small Intestine Duodenum Jejunum
2016/5/10
Intestinal phosphate (Pi) absorption across the apical membrane of small intestinal epithelial cells is mainly mediated by the type IIb Na-coupled phosphate co-transporter (NaPi-IIb), but its expressi...
The Synthesis and Characterization of Polyether-Modified Polysiloxane Phosphate
Polyether-Modified Polysiloxane Phosphate Surface Properties Synthesis
2011/12/20
In order to combine the properties of phosphate surfactants and silicone surfactants, the polyether-modified polysiloxane phosphate (PPSP) was prepared. Firstly, the intermediate was synthesized throu...
Synthesis of Amphoteric Phosphate Ester Surfactant by Polyphosphoric Acid and Its Application in Free-Chrome Collagen Fiber
Amphoteric Phosphate Ester Surfactant Free-Chrome Collagen Fiber Polyphosphoric Acid (PPA)
2011/12/15
In order to avoid using P2O5 as phosphorylation reagent in phosphorylation reaction, an amphoteric phosphate ester surfactant was synthesized by using polyphosphate acid as phosphorylation reagent. Th...
An efficient one-pot synthesis of dihydropyrimidinones catalyzed by zirconium hydrogen phosphate under solvent-free conditions
Biginelli reaction solvent-free zirconium hydrogen phosphate
2010/10/18
A simple, efficient, and practical procedure for the Biginelli reaction using zirconium hydrogen phosphate [Zr(H2PO4)2] as a novel solid acid catalyst is described under solvent-free conditions in hig...
Improved Solid-phase Spectrometry for the Microdetermination of Total and Dissolved Phosphate
Improved Solid-phase Spectrometry Microdetermination Phosphate
2010/9/17
Solid-phase spectrophotometry has been improved for the determination of the total and dissolved phosphate in water. The target phosphate-P at sub-μg dm−3 to μg dm−3 levels in a 20-cm3 wat...
Spectrophotometric Determination of Trace Phosphate Ions by Amplitude-Modulated Flow Analysis Coupled with Malachite Green Method
Spectrophotometric Determination Trace Phosphate Ions
2010/9/14
An amplitude-modulated flow analysis coupled with lock-in detection is proposed for the determination of trace phosphate. The flow rate FS of sample solution is varied in response to a periodic signal...
Leaching of Phosphate in Structured Soil–a Two Step Process
Leaching of Phosphate Structured Soil Two Step Process
2009/10/23
This paper summarizes a series of experiments on P-leaching in structured
clayey soil, mostly conducted on intact soil columns with diameter 0.5 m, and
length 0.5,0.73 or 1.0 m. Breakthrough curves ...