نتایج جستجو برای: lanthanum based perovskites

تعداد نتایج: 2941049  

2008
Elizabeth Lindley James Tattersall Mark Wright

Correction of metabolic acidosis after conversion from sevelamer hydrochloride to lanthanum carbonate Sir, We recently introduced lanthanum carbonate as an alternative phosphate binder to sevelamer hydrochloride in patients with elevated serum calcium. Lanthanum carbonate has a higher affinity for phosphate than sevelamer HCl, so fewer lanthanum carbonate tablets are required to achieve the sam...

Journal: :Chemistry of Materials 2021

Low-dimensional hybrid perovskites have emerged as promising materials for optoelectronic applications. Although these already demonstrated enhanced stability compared to their three-dimensional perovskite analogues, functionality has been limited by the insulating character of organic moieties that primarily play a structure-directing role. This is particularly case layered (2D) based on forma...

Journal: :Research, Society and Development 2022

Fuel cells are one of the most efficient and effective solutions to environmental problems high energy demand. They devices which change chemical into electrochemical energy, allowing much higher efficiency than conventional thermomechanical conversion methods. Lanthanum Strontium Cobalt Ferrite (LSCF) perovskites have been widely studied for application as cathodes in solid oxide fuel (SOFC) d...

2015
Pradeep Sharma Rajni Bais Mukesh Tiwari

Optimum conditions for the determination of lanthanum at sub μg level have been developed employing differential pulse polarography. A detection limit of 0.5μg/ml has been achieved. The method successfully been applied for analysis of lanthanum in industrial wastes.

Journal: :Histology and histopathology 1991
Y P Chau C L Chien K S Lu

The permeability of blood capillaries associated with small granule-containing (SGC) cells in rat superior cervical ganglia was investigated at ultrastructural level by employing ionic lanthanum as an electron dense tracer. In rat superior cervical ganglia, the majority of blood capillaries were nonfenestrated. Both fenestrated and nonfenestrated capillaries were observed in the area associated...

Journal: :The Journal of Cell Biology 1972
Terry E. Machen David Erlij F. B. P. Wooding

Ionic lanthanum has been used to study transepithelial ion permeation in in vitro rabbit gallbladder and intestine (ileum) by adding 1 mM La(3+) to only the mucosal bathing solution. Transepithelial fluid transport electrical potential differences (p.d.), and resistances were measured. During La(3+) treatment the gallbladder's rate of active solute-coupled fluid transport remained constant, the...

2014
Pablo Ureña-Torres Dominique Prié Karim Keddad Peter Preston Paul Wilde Hong Wan J Brian Copley

BACKGROUND High levels of circulating fibroblast growth factor 23 (FGF23) are associated with chronic kidney disease (CKD) progression and high mortality. In the Phosphate Reduction Evaluation of FGF23 in Early CKD Treatment (PREFECT) study, we assessed the effect of reducing intestinal phosphate absorption using lanthanum carbonate on FGF23 levels in normophosphatemic patients with CKD stage 3...

Ali Roozbahani M.R Tagebakhsh Mohsen Morravati Syed w. Husain Vahid kiarostami

Phosalone, malathion and diazinon were analyzed in corn oil using solid phase extraction (SPE)with lanthanum silicate as a new solid sorbent followed by gas chromatography with nitrogenphosphorus detection (GC-NPD). The efficiency of different eluents (methanol, dichloromethane,ethyl acetate, dichloromethane — ethyl acetate (1:1) and ethyl acetate — methanol (1:1)) werecompared for elution of o...

Journal: :Nephron. Clinical practice 2012
João M Frazão Teresa Adragão

Phosphate-binder therapy for hyperphosphataemia is key to the treatment of patients with chronic kidney disease (CKD)-mineral and bone disorder (MBD). Calcium-free phosphate binders are increasingly favoured since calcium-based agents potentially cause harmful calcium overload and vascular calcification that confound the benefits of reducing serum phosphorus. Several calcium-free phosphate bind...

Journal: :Journal of cellular biochemistry 2012
Wen-Hua Zhao Bao-Di Gou Tian-Lan Zhang Kui Wang

Vascular calcification (VC) is frequent prevalence in patients with chronic kidney disease (CKD) and atherosclerosis. Lanthanum carbonate is used as an orally administered phosphate-binding agent to reduce the gastrointestinal absorption of phosphate and ameliorate VC in advanced CKD. In this study, we used bovine vascular smooth muscle cells as a model VC in vitro and studied the effects of la...

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