نتایج جستجو برای: phosphorus p2o5

تعداد نتایج: 42486  

Journal: :International Journal of Enviornment and Climate Change 2023

The present study in pot experiments was conducted on “Influence of phosphorus and sulphur application sesame yield high P soils Telangana”. experiment two different levels status with 67.29 kg P2O5 ha-1 soil 1 (S1) 83.46 2 (S2). treatments were taken factorial completely randomized design combination five (P0-0, P25- 5, P50-10,P75-15 P100-20 soil) four (S0-0,S1-10,S2-20 S3-30 soil). A signific...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده فنی 1392

در این پژوهش، سنتز نانوبیوالیاف شیشه¬ای مزومتخلخل در دو سیستم sio2-cao-p2o5-tio2 و sio2-cao-p2o5 به روش الکتروریسی هم¬محور مورد بررسی قرار گرفت و پارامترهای غلظت و ولتاژ اعمالی در فرآیند الکتروریسی بهینه شد. سطح ویژه و حجم حفرات نانوبیوالیاف در دو سیستم sio2-cao-p2o5 و sio2-cao-p2o5-tio2، پس از عملیات حرارتی اندازه¬گیری شد. در مرحله بعد جهت بررسی رسانش دارو، از داروی مدل ایبوپروفن استفاده و این...

2016
Sergio E. Ruiz Hernandez Richard I. Ainsworth Nora H. de Leeuw

Article history: Received 2 February 2016 Received in revised form 24 May 2016 Accepted 5 June 2016 Available online 11 June 2016 Classical molecular dynamics (MD) simulations were used to study the structural changes in the surfaces of biocompatible phosphate glasseswith compositions (P2O5)0.45(CaO)x(Na2O)0.55−x (x=30, 35, 40) to evaluate their effect on the solubility of the material. Direct ...

2010
BOHDAN V. PADLYAK

The X-band EPR spectra of the UV -, X -, and γ irradiated glasses of the SiO2-Na2O-CaO-P2O5 (Bioglass) and CaO-Ga2O3-GeO2 systems with different chemical compositions have been investigated at temperatures 77 and 300 K. It was shown that the efficiency of generation of the electron and hole centers in glasses of both systems strongly depends on their basic composition and is almost independent ...

Journal: : 2023

Human economic activity leads to removal of nutrients from the soil along with crop. Nutrients losses also occur because natural processes (erosion, leaching, etc.). It is necessary replenish missing use humate-containing organomineral fertilizers preserve fertility and increase productivity. The purpose this work study iron (III) phosphates interaction potassium humate obtain fertilizers. Meth...

2008
Antonio P. Mallarino

Increasing fertilizer prices and awareness of potential impacts of excessive or badly applied nutrients on water quality has renewed interest in fertilizer management strategies that reduce nutrient inputs or improve efficacy. Fertilizer recommendations for phosphorus (P) and potassium (K) in Iowa and most states of the Corn Belt are based on soil testing and maintenance of desirable soil-test ...

2016
R. Teodosieva

The bio-solubilization of Jordan phosphorite by the phosphate-solubilizing fungus Aspergillus niger has been investigated. The effect of the phosphate concentration in the liquid medium, the duration of biodecomposition, titratable acidity and the effect of preliminary mechanical activation on the process of dissolution have been studied. The investigations indicate that almost complete extract...

2015
Shahram Shariati Armin Salsani Kota Hanumantha Rao

Three quarters of the world’s phosphate deposits are of sedimentary origin and 75%–80% of those include carbonate gangue. In this study, carbonate sedimentary phosphate deposits of the Lar Mountains of southwest Iran are studied. These deposits consist mainly of calcite, fluorapatite, quartz, kaolinite and illite, with an average P2O5 grade of 9%–10% (low-grade). Various pre-processing and proc...

B. Eftekhari Yekta, G. Maghouli,

Commercial dental lithium disilicate based glass-ceramics containing various amounts of P2O5 were synthesized. Regarding the crystallization behavior and physico-chemical properties of the glasses, the optimum percent of P2O5 was determined.as 8 %wt. Crystallization behavior of the glasses was investigated by X-ray diffraction (XRD) and differential thermal analysis (DTA). The micro-hardness a...

Journal: :Journal of plant and environment 2022

Phosphorus (P) and Sulphur (S) are the most important plant nutrients which play significant roles in enhancing early growth development increasing fodder yield of maize. This field study was planned to evaluate P-S interaction effects on maize growth, nutrient (P S) uptake. The soil used for clay loam, medium-alkaline (pH: 7.9), non-saline (EC: 0.85 dS m-1), strongly calcareous (CaCO3: 24 %), ...

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