Log in

Relevant bibliographies by topics / Phosphorus ratio / Journal articles

To see the other types of publications on this topic, follow the link: Phosphorus ratio.

Journal articles on the topic 'Phosphorus ratio'

Author: Grafiati

Published: 3 June 2025

Last updated: 1 August 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Phosphorus ratio.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Luo, Biwei, Pengfei Li, Yan Li, et al. "Optimization of medium–low-grade phosphorus rock carbothermal reduction process by response surface methodology." Green Processing and Synthesis 9, no. 1 (2020): 349–58. http://dx.doi.org/10.1515/gps-2020-0035.

Full text

Abstract:

AbstractPhosphorus extraction from phosphorus rock was conducted by carbothermal reduction with silica and coke. The effects of reaction temperature, reaction time, coke excess coefficient, molar ratio of silicon–calcium, and phosphorus rock particle size on the phosphorus reduction rate were investigated by the response surface methodology (RSM). The central composite design (CCD) with five factors and five levels was used to explore the effects of variables’ interactions on the phosphorus reduction rate. The results showed that there are significant interactions between reaction time and tem

APA, Harvard, Vancouver, ISO, and other styles

2

Shastak, Y., M. Witzig, and M. Rodehutscord. "Whole body phosphorus to tibia phosphorus ratio in broilers*." European Poultry Science 76, no. 4 (2012): 217–22. https://doi.org/10.1016/s0003-9098(25)00737-4.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Slović, Z. M., D. Bradarić, Karlo Raić, and J. Z. Slović. "Estimation of phosphorus distribution ratio at the end of blowing in BOF." Metallurgical and Materials Engineering 27, no. 4 (2021): 425–36. http://dx.doi.org/10.30544/646.

Full text

Abstract:

In integrated steel plants, the removal of phosphorous normally takes place during the primary basic oxygen furnace (BOF) steelmaking process. Phosphorous is usually introduced to the integrated steelmaking process through blast furnace additions, such as iron ore, coke, sinter, and fluxes. Among the others parameters such as optimizing the charging system, oxygen supply system, oxygen lance parameters of the converter, the flux quality in combination with temperature process control can improve the BOF efficiency of Dephosphorization. Phosphorus partition ratio (LP) is usually used to evaluat

APA, Harvard, Vancouver, ISO, and other styles

4

Bulgakov, N. G., and A. P. Levich. "The nitrogen: phosphorus ratio as a factor regulating phytoplankton community structure." Fundamental and Applied Limnology 146, no. 1 (1999): 3–22. http://dx.doi.org/10.1127/archiv-hydrobiol/146/1999/3.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Song, Yansong, Xiaojun Hu, and Kuochih Chou. "Effect of multiphase flux with BaO addition on phosphorus partition." Metallurgical Research & Technology 119, no. 6 (2022): 612. http://dx.doi.org/10.1051/metal/2022099.

Full text

Abstract:

It is important to clarify the effect of BaO in phosphorus partition of multiphase flux. In current work, the slag CaO-SiO2-FetO-P2O5 with different contents of BaO was cooled from 1873 K to 1673 K to investigate the effect of BaO on phosphorus partition of solid solution. The phosphorous partition between the solid solution phase and liquid phase was obtained. In order to further inspect the effect of BaO on phosphorus partition, the experiment of reaction between 2CaO · SiO2 (C2S)-FetO/Fe2O3-BaO slag and hot metal was carried out. Furthermore, the CaO-FetO slag was also studied to compare th

APA, Harvard, Vancouver, ISO, and other styles

6

Hidayat, Cecep, Budi Frasetya, and Ilman N. Syamsudin. "Adjustment of phosphorus concentration to increase growth and yield of cherry tomato using hydroponic drip system." Jurnal Agro 5, no. 2 (2018): 140–47. http://dx.doi.org/10.15575/3658.

Full text

Abstract:

The phosphorus element plays an essential role in plant growth both at the vegetative and generative phases, so its concentration modification in the nutrient solution is necessary to stimulate vegetative growth and crop yield. The research aimed to know the influence of different phosphorus concentrations on growth and yield of cherry tomato using a hydroponic drip irrigation system, conducted from February to June 2017 at Green House Research Station of Universitas Padjajaran Jatinangor using Completely Randomized Design with five treatments and five replications. The treatments were: phosph

APA, Harvard, Vancouver, ISO, and other styles

7

Tzaphlidou, Margaret, and Vladimir Zaichick. "Calcium, Phosphorus, Calcium-Phosphorus Ratio in Rib Bone of Healthy Humans." Biological Trace Element Research 93, no. 1-3 (2003): 63–74. http://dx.doi.org/10.1385/bter:93:1-3:63.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

McMillan, Chantal J., Dominique J. Griffon, Steven L. Marks, and Glenna E. Mauldin. "Dietary-Related Skeletal Changes in a Shetland Sheepdog Puppy." Journal of the American Animal Hospital Association 42, no. 1 (2006): 57–64. http://dx.doi.org/10.5326/0420057.

Full text

Abstract:

A commercially available, renal failure diet was used to manage suspected renal failure in a 10-week-old Shetland sheepdog puppy. Rickets subsequently developed, possibly from low phosphorous intake and an increased calcium to phosphorus ratio. Decreased dietary calcium in addition to decreased phosphorus may have played a role in decreasing bone mineral density. Lethargy, decreased long bone growth, angular limb deformity, and osteopenia occurred, but these signs resolved within 3 months with nutritional management.

APA, Harvard, Vancouver, ISO, and other styles

9

An, Juan, Wen Qiang Yang, Xiao Li Yuan, and Wen Tang Xia. "Removal of Phosphorus from High-Phosphorus Iron Ores by Sodium Roasting." Advanced Materials Research 884-885 (January 2014): 228–32. http://dx.doi.org/10.4028/www.scientific.net/amr.884-885.228.

Full text

Abstract:

The phosphorus removal from high-phosphorus iron ores by sodium roasting was studied. The effects of ratio of NaOH to NaCO3, roasting temperature and reaction time on the dephosphorization ratio were investigated. The results showed that the dephosphorization ratio can reach 80.1% under the conditions of ratio of NaOH to NaCO3 5:6, roasting temperature 1100°C, and reaction time 120min. After sodium roasting, the content of phosphorus in iron ore sample complied completely with the requirements of steel production.

APA, Harvard, Vancouver, ISO, and other styles

10

Zhang, Guangyu, Wei Sun, Shaowei Li, Zhiming Zhong, and Gang Fu. "Spatio-temporal patterns of carbon, nitrogen and phosphorus in the aboveground parts of plants in alpine grasslands on the Qinghai-Xizang Plateau: Insights from a multi-faceted analysis." PLOS One 20, no. 6 (2025): e0325698. https://doi.org/10.1371/journal.pone.0325698.

Full text

Abstract:

Uncertainties in spatio-temporal patterns of nitrogen, phosphorus, especially carbon of the aboveground parts of plants limit our predictions of plant carbon sequestration capacity, nitrogen and phosphorus cycling. This study quantified the spatio-temporal patterns of carbon, nitrogen and phosphorus in the aboveground parts of plant communities in alpine grasslands of the Qinghai-Xizang Plateau in 2000–2022. The spatially averaged carbon content, nitrogen content, phosphorus content, carbon pool, nitrogen pool, phosphorus pool, carbon-nitrogen ratio, carbon-phosphorus ratio and nitrogen-phosph

APA, Harvard, Vancouver, ISO, and other styles

11

Liang, Haijun, Patrick Zhang, Zhen Jin, and David DePaoli. "Rare Earth and Phosphorus Leaching from a Flotation Tailings of Florida Phosphate Rock." Minerals 8, no. 9 (2018): 416. http://dx.doi.org/10.3390/min8090416.

Full text

Abstract:

Phosphorite, or phosphate rock, is the raw material of phosphoric acid production. It has also been regarded as the most important secondary rare earth element (REE) resource due to low contents of rare earth elements contained in the ore. In Florida, there is about 19 Mt of phosphate rock mined annually. After beneficiation, the phosphate rock concentrate is utilized to produce phosphoric acid via a wet-process in which sulfuric acid is used to digest phosphate. During these processes, REEs and some phosphorus get lost in the byproducts including phosphatic clay, flotation tailings, phosphogy

APA, Harvard, Vancouver, ISO, and other styles

12

Puziy, Alexander M., Olga I. Poddubnaya, Barbara Gawdzik, Magdalena Sobiesiak, and Myroslav Sprynskyy. "Structural Evolution of Polyimide-Derived Carbon during Phosphoric Acid Activation." C 8, no. 3 (2022): 47. http://dx.doi.org/10.3390/c8030047.

Full text

Abstract:

Carbon adsorbents were obtained by carbonization of polyimide polymer with and without the presence of phosphoric acid at temperatures in the range of 400–1000 °C. Carbons produced in the presence of phosphoric acid have been demonstrated to contain up to 13.2% phosphorus. The structure of phosphorus-containing compounds was investigated by XPS and 31P MAS NMR methods. Deconvolution of the P 2p peak with variable binding energy showed the presence of only phosphates/polyphosphates. However, a low value of the O/P ratio is an indirect indication of the possible presence of phosphonates. A 31P M

APA, Harvard, Vancouver, ISO, and other styles

13

Davis, D. Allen, Addison L. Lawrence, and Delbert M. Gatlin. "Response of Penaeus vannamei to Dietary Calcium, Phosphorus and Calcium: Phosphorus Ratio." Journal of the World Aquaculture Society 24, no. 4 (1993): 504–15. http://dx.doi.org/10.1111/j.1749-7345.1993.tb00581.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

14

Burstad, Kendal M., Alexandria Fons, and Kathleen M. Hill Gallant. "Phosphorus Content and Phosphorus-to-Protein Ratio Among Plant-Based Protein Products." Journal of the American Society of Nephrology 33, no. 11S (2022): 277. http://dx.doi.org/10.1681/asn.20223311s1277b.

Full text

APA, Harvard, Vancouver, ISO, and other styles

15

Benhua, Sun, Cui Quanhong, Guo Yun, et al. "Soil phosphorus and relationship to phosphorus balance under long-term fertilization." Plant, Soil and Environment 64, No. 5 (2018): 214–20. http://dx.doi.org/10.17221/709/2017-pse.

Full text

Abstract:

Temporal changes in the concentrations of plant-available phosphorus (P) in soil (Olsen-P), total soil-P and P activation coefficient (the ratio of Olsen-P to residual-P (i.e. an approximation to total-P)) were measured in plots that received consistent inorganic nitrogen, phosphorus and potassium plus organic fertilizers annually. Maize and winter wheat crops were grown in rotation for 24 years. Olsen-P and P activation coefficient declined significantly in the earlier years (&lt; 12 years) for treatments that did not include any P fertilizer, and increased over the same period for the P-

APA, Harvard, Vancouver, ISO, and other styles

16

Zhou, Jin Dong, Xue Gong Bi, Zhi Cheng Huang, Zhi Jun Wen, Fu Yang, and Yan Jin. "Phosphorus Distribution Equilibrium between CaO-FeO*-SiO₂-P₂O₅(15%)-CaF₂(B₂O₃) Slag System and Carbon-Saturated Hot Metal at 1573K." Advanced Materials Research 402 (November 2011): 227–34. http://dx.doi.org/10.4028/www.scientific.net/amr.402.227.

Full text

Abstract:

In order to understand the equilibrium condition of phosphorus between slag and hot metal saturated with carbon in the high phosphorus hot metal dephosphorization process, the dephosphorization capacity of CaO-FeO*-SiO2-P2O5(15%) -CaF2(B2O3) slag system at 1573 K was studied, by applying the method that phosphorus distribution ratio between slag and solid iron was firstly measured and the one between slag and hot metal was then calculated. The results showed that phosphorus distribution ratio decreased with increase in basicity of CaO/(SiO2 +P2O5), a proper increase in SiO2 content is helpful

APA, Harvard, Vancouver, ISO, and other styles

17

Rath, Haramohan, BB Panda, AK Verma, AK Nayak, and J. Jena. "System based phosphorus management improved the productivity, profitability and nutrient uptake of rainfed rice (Oryza sativa L.) - greengram (Vigna radiata L.) cropping system." JUNE 59, no. 2 (2022): 205–10. http://dx.doi.org/10.35709/ory.2022.59.2.10.

Full text

Abstract:

The effect of system based phosphorus management on crop productivity, profitability and nutrient uptake of rainfed rice-greengram cropping system was studied under medium land situation at ICAR-NRRI, Cuttack, Odisha. The experiment was carried out in both kharif and rabi season of the years 2019-20 and 2020-21. The experiment was laid out in a split plot design with four nutrient management practices in rice viz. recommended dose of fertilizer (RDF), RDF + 25% additional phosphorus(P) through FYM, RDF + 25% additional phosphorus(P) through fertilizer and 75% of RDF (RDF75) in main plots and f

APA, Harvard, Vancouver, ISO, and other styles

18

Kang, Junjie, Suyalatu Xin, Huxiong Zhang, et al. "Investigating the association between calcium–phosphorus balance and osteoarthritis: Evidence from NHANES 2007–2016." Medicine 104, no. 29 (2025): e43301. https://doi.org/10.1097/md.0000000000043301.

Full text

Abstract:

The role of the calcium–phosphorus balance in influencing osteoarthritis (OA) risk is not fully understood. This study investigated the relationship between calcium–phosphorus metabolism and OA risk. Data from the National Health and Nutrition Examination Survey spanning 2007 to 2016 were used in this study. Participants aged ≥ 30 years with available serum calcium and phosphorus levels, self-reported OA status, and relevant covariates were included in the study. Multivariable logistic regression analysis was performed to assess the potential influence of calcium–phosphorus metabolism on the r

APA, Harvard, Vancouver, ISO, and other styles

19

Song, Yansong, Dayong Zhang, Yaoqiang Lv, Qiaomei Sun, and Hongkui Zhang. "Influence of BaO on dephosphorization behavior of multiphase flux." Metallurgical Research & Technology 121, no. 4 (2024): 413. http://dx.doi.org/10.1051/metal/2024052.

Full text

Abstract:

The dephosphorization behavior of multiphase steel slag in converter steelmaking process is very important for higher steel quality with ultra-low phosphorus content. In this paper, the multiphase steel slag with different BaO content reacted with hot metal at 1873 K temperature. The influence of the reaction on dephosphorization was investigated. The mineralogical phase was observed. The phosphorus partition between phosphorus enriched phase and liquid phase was discussed. The phosphorus partition ratio between steel slag and hot metal was obtained. The main mineralogical phases of steel slag

APA, Harvard, Vancouver, ISO, and other styles

20

Militaru, Bogdan A., Rodica Pode, Florica Manea, and Petrica A. Linul. "Simple and Combined Acidic Extraction of Phosphorus from Sewage Sludge Ash." Revista de Chimie 70, no. 1 (2019): 133–39. http://dx.doi.org/10.37358/rc.19.1.6867.

Full text

Abstract:

A comparative behavior of inorganic and organic acids as extraction agents for phosphorous extraction from sewage sludge ash provided by a municipal wastewater plant from Timis County, Romania, was studied in this work. The physical-chemical and morphological properties were determined by X-ray diffraction, FTIR spectroscopy and scanning electron microscopy. Batch simple extraction experiments with hydrochloric acid, sulfuric acid and citric acid were conducted on the sewage sludge ash for phosphorous extraction. The operating conditions for acidic extraction with each acid and combination of

APA, Harvard, Vancouver, ISO, and other styles

21

Xu, Guangyu, Jie Ren, Kai Cui, and Kun Guo. "Effect of operating conditions on phosphorus recovery from acidified plant oil wastewater by struvite crystallization." IOP Conference Series: Earth and Environmental Science 1135, no. 1 (2023): 012014. http://dx.doi.org/10.1088/1755-1315/1135/1/012014.

Full text

Abstract:

Abstract Struvite crystallization is an effective method for recovery of nitrogen and phosphorus from wastewater, and the operating parameters are crucial to the efficient phosphorus removal and struvite crystallization. In this study, the effects of pH, N-P ratio and Mg-P ratio on the phosphorus recovery from acidified plant oil wastewater were investigated. The results showed that the optimal operating conditions were pH 10, N-P ratio 1.1:1, and Mg-P ratio 1:1. Under the optimized operational conditions, 88.1% of the total phosphorus was removed from the wastewater. The XRD and SEM-EDS resul

APA, Harvard, Vancouver, ISO, and other styles

22

Jasani, Rachana, Rajesh Kumar, and Paras Dedhia. "Novel Approaches for Dietary Phosphorus Management in Chronic Kidney Disease." Indian Journal of Nutrition and Dietetics 57, no. 1 (2020): 108. http://dx.doi.org/10.21048/ijnd.2020.57.1.23775.

Full text

Abstract:

<p>Conventional approaches to alleviating hyperphosphatemia in patients with Chronic Kidney Disease (CKD) include dietary phosphorus restriction and use of phosphate binders. These approaches are, however not enough to control hyperphosphatemia and hence the need for novel nutritional approaches arises. Dietary phosphorus, protein and phytate values of some common food ingredients were obtained. Phosphates to protein ratio and net phosphorus absorption from the gut were reported on the basis of the phytate content of these ingredients. Among some common Indian food ingredients, phosphate

APA, Harvard, Vancouver, ISO, and other styles

23

Fujimoto, N., T. Mizuochi, and Y. Togami. "Phosphorus Fixation in the Sludge Treatment System of a Biological Phosphorus Removal Process." Water Science and Technology 23, no. 4-6 (1991): 635–40. http://dx.doi.org/10.2166/wst.1991.0513.

Full text

Abstract:

One of the major problems connected with the biological phosphorus removal process is that the phosphorus absorbed by the activated sludge may be released if the sludge is handled incorrectly, and this makes it difficult to treated sewage efficiently. Therefore, phosphorus in the return water from the sludge treatment process must be carefully controlled and reduced. Lime and ferric chloride were added to fix phosphorus in the digestion tank. Phosphorus fixation improved with the addition of lime. The digestion ratio reached a maximum at about 0.8 mol/mol to total phosphorus (T-P) with lime ad

APA, Harvard, Vancouver, ISO, and other styles

24

Wang, Xiaojiao, Hailiang Li, Guopeng Liang, et al. "Phosphorus Fertilization Reduces Soil Microbial Necromass Carbon Content in Tillage Layer of Dry Farmland on Loess Plateau." Agriculture 15, no. 5 (2025): 485. https://doi.org/10.3390/agriculture15050485.

Full text

Abstract:

This study examines how nitrogen and phosphorus fertilization influence soil microbial necromass carbon (MNC) content of farmland on the Loess Plateau, central Gansu. Based on an extensive (6 years) experiment, a control (CK, no fertilization) and three treatment groups employing different fertilization methods, namely, nitrogen fertilization (N, 115 kg·ha−1), phosphorus fertilization (P, 115 kg·ha−1), and combined fertilization of nitrogen and phosphorus (NP, 115 kg·ha−1 each), were set up in this research. The results show that, in the tillage soil layer (within a depth range of 0–20 cm), th

APA, Harvard, Vancouver, ISO, and other styles

25

Pelegano, James F., Jonelle C. Rowe, Dennis E. Carey, et al. "Effect of Calcium/Phosphorus Ratio on Mineral Retention in Parenterally Fed Premature Infants." Journal of Pediatric Gastroenterology and Nutrition 12, no. 3 (1991): 351–55. http://dx.doi.org/10.1002/j.1536-4801.1991.tb10249.x.

Full text

Abstract:

SummaryWe hypothesized that retention of parenterally delivered calcium (Ca) and phosphorus (P) is affected by the ratio of the delivered minerals and that a 1.7:1 ratio would be optimal since this is the ratio of retention of these minerals by the fetus. Forty‐one very low birth weight (VLBW) infants were randomly assigned to one of three total parenteral nutrition (TPN) solutions that were different only in their Ca:P ratios: 2:1 (76 mg/kg/day Ca and 38 mg/kg/day of P), 1.7:1 (76 mg/kg/day Ca and 45 mg/kg/day P), and 1.3:1 (58 mg/kg/day of Ca and 45 mg/ kg/day of P). Serum levels of calcium,

APA, Harvard, Vancouver, ISO, and other styles

26

Ondřej, Sedlář, Balík Jiří, Kulhánek Martin, Černý Jindřich, and Kos Milan. "Mehlich 3 extractant used for the evaluation of wheat-available phosphorus and zinc in calcareous soils." Plant, Soil and Environment 64, No. 2 (2018): 53–57. http://dx.doi.org/10.17221/691/2017-pse.

Full text

Abstract:

Relation between wheat (Triticum aestivum) nutritional status determined at the beginning of stem elongation and during anthesis, respectively, and available content of phosphorus (P-M3) and zinc (Zn-M3) determined by the Mehlich 3 extractant was studied. Both one-year pot experiment with spring wheat and two-year on-farm trials with winter wheat were run on various calcareous soils (pH values of 7.18–7.94, median 7.80, P-M3 1–289 ppm, median 54, and Zn-M3 2–14 ppm, median 4), in the Czech Republic (Central Europe). Phosphorus nutrition index (ratio of phosphorus concentration in shoot biomass

APA, Harvard, Vancouver, ISO, and other styles

27

Li, Heng, Sandip Barui, Sankha Mukherjee, and Kinnor Chattopadhyay. "Least Squares Twin Support Vector Machines to Classify End-Point Phosphorus Content in BOF Steelmaking." Metals 12, no. 2 (2022): 268. http://dx.doi.org/10.3390/met12020268.

Full text

Abstract:

End-point phosphorus content in steel in a basic oxygen furnace (BOF) acts as an indicator of the quality of manufactured steel. An undesirable amount of phosphorus is removed from the steel by the process of dephosphorization. The degree of phosphorus removal is captured numerically by the ‘partition ratio’, given by the ratio of %wt phosphorus in slag and %wt phosphorus in steel. Due to the presence of multitudes of process variables, often, it is challenging to predict the partition ratio based on operating conditions. Herein, a robust data-driven classification technique of least squares t

APA, Harvard, Vancouver, ISO, and other styles

28

Deng, Tao, Bokai Xia, Yuanhuan Liao, and Chengliang Zhang. "Optimization of Filling Material Ratio in Yellow Phosphorus Slag Mine." Materials 17, no. 22 (2024): 5521. http://dx.doi.org/10.3390/ma17225521.

Full text

Abstract:

Yellow phosphorus slag has been considered as a potential cement substitute for mine filling material due to its cementing activity; however, its slow setting and low early strength have limited broader use. This study investigates the grading, compactness, and strength of yellow phosphorus slag combined with tailing sand. Using yellow phosphorus slag as an aggregate, cement as a binder, and mixing tailing sand in different ratios, this study evaluates its feasibility as a coarse aggregate in mine backfill. The key findings are as follows. (1) The grading index of tailing sand was 0.5, alignin

APA, Harvard, Vancouver, ISO, and other styles

29

Sang, Eun Lee, Soo Kim Kwang, Hwan Ahn Jae, and Whoe Kim Chang. "Comparison of phosphorus removal characteristics between various biological nutrient removal processes." Water Science and Technology 36, no. 12 (1997): 61–68. http://dx.doi.org/10.2166/wst.1997.0431.

Full text

Abstract:

Bench scale experiments were carried out with four biological nutrient removal(BNR) units, A/O, A2/O, Phostrip and P/L units, to investigate the behavior of phosphorus in the system and to compare the characteristics of phosphorus removal in four experimental BNR units. The influent COD/T-P ratio was varied from 22 to 64 by changing COD concentration while maintaining phosphorus concentration constant. In general sidestream BNR units such as Phostrip and P/L units outperformed mainstream BNR units such as A/O and A2/O units in terms of phosphorus removal. While phosphorus release and uptake in

APA, Harvard, Vancouver, ISO, and other styles

30

Xiang, Xiao Yan, Wen Tang Xia, Xiao Li Yuan, Jian Guo Yin, and Juan An. "Removal of Phosphorus from High Phosphorus Iron Ores in Wushan Mountain by Crosscurrent Acid Leaching." Solid State Phenomena 279 (August 2018): 222–29. http://dx.doi.org/10.4028/www.scientific.net/ssp.279.222.

Full text

Abstract:

In the process of resource utilization of high phosphorus iron ores, phosphorus should be removed first. Compared to other dephosphorization methods, selective leaching with acid has special advantages such as high dephosphorization ratio, low iron loss and so on. However, a large amount of acidic wastewater containing phosphorus was produced after acid leaching. Therefore, the rational use of acidic wastewater and decrease of acid consumption is crucial to remove phosphorus by acid leaching. In this paper, the thermodynamics of the acid leaching was studied according to the existence form of

APA, Harvard, Vancouver, ISO, and other styles

31

Wu, Bin, Zhen Yao Xia, Lin Lin Zhang, et al. "A Suggested Fractionation of Inorganic Phosphorus at Various Types of Slope Soil Under Different Restoration Modes." Advanced Materials Research 726-731 (August 2013): 3799–802. http://dx.doi.org/10.4028/www.scientific.net/amr.726-731.3799.

Full text

Abstract:

This paper selected various types of slope soil under different restoration modes of Xiangjiaba hydropower construction to study the fractionation of inorganic phosphorus. The results showed that the content of inorganic phosphorus was lower.In seven different types of slop soil,the content of total inorganic phosphorus was between 254.43 mg·kg-1 and 992.98 mg·kg-1,and accounted for between 22.60% and 47.12%.The content of soil total inorganic phosphorus and the raito of Water-soluble phosphorus,Al-P to total phosphorus increased as the content of soil total P increase,but the ratio of soil O-

APA, Harvard, Vancouver, ISO, and other styles

32

Zhou, Zhen, Wei Min Qiao, Rezihan Muhemaiti, Zhen Li, Ling Yan Jiang, and Hai Juan Wei. "Effects of Primary Settling Tank on Denitrifying Phosphorus Removal in a Full-Scale AAO Process." Advanced Materials Research 860-863 (December 2013): 506–9. http://dx.doi.org/10.4028/www.scientific.net/amr.860-863.506.

Full text

Abstract:

Effects of primary settling tank (PST) on phosphorus removal and the ratio of denitrifying phosphorus removing bacteria (DPB) to phosphorus accumulating organisms (PAOs) in a full-scale anaerobic/anoxic/aerobic (AAO) process were investigated by field survey and batch test. The AAO process without PST showed higher phosphorus removal efficiency than that with PST. In the anoxic tank, the phenomenon of anoxic phosphorus uptake and anaerobic phosphorus release were observed in the AAO process without and with PST, respectively. The DBP/PAOs ratio was 46% and 39% in the AAO process with and witho

APA, Harvard, Vancouver, ISO, and other styles

33

Lu, Xudan, Fangru Nan, Jia Feng, et al. "Effects of Different Environmental Factors on the Growth and Bioactive Substance Accumulation of Porphyridium purpureum." International Journal of Environmental Research and Public Health 17, no. 7 (2020): 2221. http://dx.doi.org/10.3390/ijerph17072221.

Full text

Abstract:

Genus Porphyridium is a primitive single-celled red algae widely distributed in seawater, freshwater, and moist soil. It can synthesize bioactive substances such as phycoerythrin, extracellular polysaccharides and polyunsaturated fatty acids during the growth process. In this paper, the culture and bioactive substance yield of Porphyridium purpureum were studied by setting salinity, nitrogen-to-phosphorus ratio, and pH at different gradient levels. The results showed that the optimal conditions for the growth of P. purpureum were salinity 34 ppt, nitrogen-to-phosphorus ratio 169:1, and pH 8; t

APA, Harvard, Vancouver, ISO, and other styles

34

Korelskaya, L., L. Sosnina, and S. Kolomiets. "Live weight as an indicator of morphobiochemical blood composition of heifers under intensive breeding technology." Genetics and breeding of animals, no. 3 (December 12, 2022): 49–54. http://dx.doi.org/10.31043/2410-2733-2022-3-49-54.

Full text

Abstract:

Purpose: within the framework of the research work, studies were carried out on the biochemical composition of the blood serum of highly productive cows, different periods of lactation and during the dry period, with tethered and loose housing.Materials and methods. The object of the study were cows of black-and-white Holsteinized breed with a productivity of more than 8500 kg on the farm. Blood sampling for biotesting was taken from 108 cows before morning feeding. Animals of the experimental groups were formed according to different periods of lactation and during the dry period with differe

APA, Harvard, Vancouver, ISO, and other styles

35

Xi, Zhicheng, Wenhan Wang, Qian Ping, et al. "Anaerobic Digestion of Phosphorus-Rich Sludge and Digested Sludge: Influence of Mixing Ratio and Acetic Acid." Separations 10, no. 10 (2023): 539. http://dx.doi.org/10.3390/separations10100539.

Full text

Abstract:

Phosphorus is a critical influencial factor in the anaerobic digestion of phosphorus-rich sludge (PRS). The anaerobic digestion of PRS and digested sludge (DS) mixed according to different proportions was studied. The result showed that the phosphorus release rate of the mixed sludge increased with the increase in DS proportion until the DS proportion was over 50%. When the mixing ratio of PRS to DS was 3:1, the specific phosphorus release rate (SPRR) was increased by 20% and the methane production was raised to 7.39 mL/g VSS. A further experiment on the concentration of the added acetic acid

APA, Harvard, Vancouver, ISO, and other styles

36

Li, Jizhen, Jilong Liu, Lingling Zhang, et al. "Variation Characteristics and Expression State of Nitrogen and Phosphorus Metering Ratio of Rice in Black Soil under Film Mulching and Irrigation Methods." Agronomy 13, no. 10 (2023): 2479. http://dx.doi.org/10.3390/agronomy13102479.

Full text

Abstract:

In order to investigate the effects of film mulching and water-saving methods on soil inorganic nitrogen, nitrogen content of rice organs, nitrogen-phosphorus metering ratio, and nutrient limitation during rice yield formation, two water-saving irrigation methods and black biodegradable film mulching were adopted. The effects of water-saving film mulching on NH4+-N and NO3−-N in 0 to 60 cm soil, nitrogen accumulation and ratio, and nitrogen-phosphorus metering ratio in rice organs were analyzed. The nitrogen-phosphorus-limiting state of rice growth under water-saving film mulching was determin

APA, Harvard, Vancouver, ISO, and other styles

37

Salviano, L. M. C., and D. M. S. S. Vitti. "Effects of different calcium to phosphorus ratios on phosphorus absorption by sheep in Brazil." Proceedings of the British Society of Animal Science 1996 (March 1996): 244. http://dx.doi.org/10.1017/s1752756200594368.

Full text

Abstract:

Phosphorus deficiencies in tropical pastures, as well as the effects of this mineral deficiencies in ruminant performance are well-known. There is still some controversy on the metabolism, as the influence of Ca:P ratio on P absorption, even though, TCORN (1991) has indicate to be unnecessary and even misleading to establish limits for Ca:P ratio, once that individual mineral requirements have been met. The aim of this experiment was to evaluate the influence of different Ca:P ratio, in diet, on P absorption in sheep commonly raised in Brazil.

APA, Harvard, Vancouver, ISO, and other styles

38

Salviano, L. M. C., and D. M. S. S. Vitti. "Effects of different calcium to phosphorus ratios on phosphorus absorption by sheep in Brazil." Proceedings of the British Society of Animal Science 1996 (March 1996): 244. http://dx.doi.org/10.1017/s0308229600032074.

Full text

Abstract:

Phosphorus deficiencies in tropical pastures, as well as the effects of this mineral deficiencies in ruminant performance are well-known. There is still some controversy on the metabolism, as the influence of Ca:P ratio on P absorption, even though, TCORN (1991) has indicate to be unnecessary and even misleading to establish limits for Ca:P ratio, once that individual mineral requirements have been met. The aim of this experiment was to evaluate the influence of different Ca:P ratio, in diet, on P absorption in sheep commonly raised in Brazil.

APA, Harvard, Vancouver, ISO, and other styles

39

Li, Xin, Xiao-Hong Zhu, and Wei Chen. "A Quantitative Comparison of 31P Magnetic Resonance Spectroscopy RF Coil Sensitivity and SNR between 7T and 10.5T Human MRI Scanners Using a Loop-Dipole 31P-1H Probe." Sensors 24, no. 17 (2024): 5793. http://dx.doi.org/10.3390/s24175793.

Full text

Abstract:

In vivo phosphorus-31 (31P) magnetic resonance spectroscopy (MRS) imaging (MRSI) is an important non-invasive imaging tool for studying cerebral energy metabolism, intracellular nicotinamide adenine dinucleotide (NAD) and redox ratio, and mitochondrial function. However, it is challenging to achieve high signal-to-noise ratio (SNR) 31P MRS/MRSI results owing to low phosphorus metabolites concentration and low phosphorous gyromagnetic ratio (γ). Many works have demonstrated that ultrahigh field (UHF) could significantly improve the 31P-MRS SNR. However, there is a lack of studies of the 31P MRS

APA, Harvard, Vancouver, ISO, and other styles

40

Zhang, Yi, Zhong Tao, Lei Wu, Zhiqi Zhang, and Zhiman Zhao. "Strength Prediction of Ball-Milling-Modified Phosphorus Building Gypsum Based on NSGM (1,4) Model." Materials 15, no. 22 (2022): 7988. http://dx.doi.org/10.3390/ma15227988.

Full text

Abstract:

Phosphogypsum is an industrial byproduct from the wet preparation of phosphoric acid. Phosphorus building gypsum can be obtained from phosphogypsum after high-thermal dehydration. This study aimed to analyze the influence of ball milling with different parameters on the strength of phosphorus building gypsum. In this paper, the absolute dry flexural strength and the absolute dry compressive strength of phosphorus building gypsum were compared under different mass ratios of material to ball, ball-milling speed, and ball-milling time, and the NSGM (1,4) model was applied to model and predict the

APA, Harvard, Vancouver, ISO, and other styles

41

Ling, Min-Pei, Jun-Da Huang, Huai-An Hsiao, Yu-Wei Chang, and Yi-Ting Kao. "Risk Assessment of the Dietary Phosphate Exposure in Taiwan Population Using a Total Diet Study." Foods 9, no. 11 (2020): 1574. http://dx.doi.org/10.3390/foods9111574.

Full text

Abstract:

Phosphorus and calcium are essential nutrients for the human body. However, excessive intake of phosphates and a low calcium:phosphorus ratio can lead to disorders in calcium-phosphorus metabolism, kidney disease, or osteoporosis. In this study, a total diet study (TDS) was used. The total phosphorus concentrations of foods were combined with the average dietary consumption to calculate the estimated daily intake, which was compared with the maximum tolerable daily intake (MTDI) to assess the resulting health risk of total phosphorus exposure. The calcium concentration in food and total calciu

APA, Harvard, Vancouver, ISO, and other styles

42

Valizadeh, G. R., Z. Rengel, and A. W. Rate. "Role of phosphorus fertiliser banding and the ratio of nitrate to ammonium on the uptake of phosphorus and wheat growth: a glasshouse study." Australian Journal of Experimental Agriculture 42, no. 8 (2002): 1095. http://dx.doi.org/10.1071/ea01088.

Full text

Abstract:

While it is known that nitrogen fertilisers improve phosphorus uptake depending on soil type and pH, the role in phosphorus uptake of the ratio of nitrate to ammonium in nitrogen fertiliser banded with phosphorus fertiliser is unclear. The present glasshouse study investigated the wheat growth response to different rates of application and banding depths (5 and 15 cm) of nitrogen and phosphorus, and mixing of phosphorus fertiliser with soil. The effect of 2 forms of nitrogen (ammonium and nitrate) banded with phosphorus fertiliser was also studied.Both banding depths increased phosphorus uptak

APA, Harvard, Vancouver, ISO, and other styles

43

Wang, Yudan, Facai Wu, Xingqiang Liu, et al. "High on/off ratio black phosphorus based memristor with ultra-thin phosphorus oxide layer." Applied Physics Letters 115, no. 19 (2019): 193503. http://dx.doi.org/10.1063/1.5115531.

Full text

APA, Harvard, Vancouver, ISO, and other styles

44

Jang, Yeoju, Jinhong Jung, Kwangho Ahn, Hyunman Lim, and Weonjae Kim. "Applicability of Al/P (Aluminium/Phosphorus) Ratio in SeDAF Process for Enhanced Phosphorus Removal." Journal of Korean Society of Environmental Engineers 42, no. 11 (2020): 539–47. http://dx.doi.org/10.4491/ksee.2020.42.11.539.

Full text

Abstract:

Objectives : To prevent eutrophication and algal blooms, Ministry of Environment in Korea has reinforced the effluent standards of wastewater treatment facilities. In the last 20 years, various advanced wastewater treatment processes have been introduced nationwide. The sedimentation･dissolved air flotation (SeDAF) process has been developed for efficient enhanced phosphorus removal in the previous researches. In the study, several factors were reviewed to examine the operation characteristics of the SeDAF process. In particular, the applicability of aluminium/phosphorus (Al/P) and aluminium/t

APA, Harvard, Vancouver, ISO, and other styles

45

Wu, Qi, Shubo Zhang, Yue Zhao, et al. "Effects of initial carbon-phosphorus ratio on phosphatase, and phosphorus availability in sludge composting." Bioresource Technology 382 (August 2023): 129192. http://dx.doi.org/10.1016/j.biortech.2023.129192.

Full text

APA, Harvard, Vancouver, ISO, and other styles

46

Wang, Jiabin, Xiaoyu Wang, Liping Qiu, Tianhang Li, and Cong Yu. "Study on Key Factors of Adsorption of Phosphorus by Steel Slag Filter Based on Response Surface Method." E3S Web of Conferences 53 (2018): 03050. http://dx.doi.org/10.1051/e3sconf/20185303050.

Full text

Abstract:

Excessive phosphorus emission is one of the important reasons for the eutrophication of water. At the same time, phosphorus is a significant mineral resource. In this paper, the response surface method is used to study the key influencing factors of phosphorus removal by steel slag filter and its action. Four factors affecting the dosage, initial pH, reaction time and calcium-phosphorus molar ratio were selected. The phosphorus removal was used as the response value. The interaction between various factors was established by Box-Behnken response surface analysis. The optimal conditions were de

APA, Harvard, Vancouver, ISO, and other styles

47

Bocaniov, Serghei Anatolii, Donald Scavia, and Philippe Van Cappellen. "A mass-balance approach for predicting lake phosphorus concentrations as a function of external phosphorus loading: Application to the Lake St. Clair – Lake Erie System (Canada – USA)." Aquatic Ecosystem Health & Management 26, no. 4 (2023): 20–30. http://dx.doi.org/10.14321/aehm.026.04.20.

Full text

Abstract:

Abstract A mass balance model is presented that links the total phosphorus concentration in lakes to the water residence time, Rw (lake volume divided by the annual water inflow) and the total phosphorus residence time, Rp (average standing stock of lake total phosphorous divided by the external annual total phosphorus input). Following a change in the external load, the lake total phosphorus concentration asymptotically approaches a new value that depends on the Rp:Rw ratio, with the rate of approach controlled by Rp. We applied this approach to a recent reanalysis of the water and total phos

APA, Harvard, Vancouver, ISO, and other styles

48

Bergner, Jennifer B., Andrew M. Burkhardt, Karin I. Öberg, Thomas S. Rice, and Edwin A. Bergin. "First Images of Phosphorus Molecules toward a Protosolar Analog." Astrophysical Journal 927, no. 1 (2022): 7. http://dx.doi.org/10.3847/1538-4357/ac47a2.

Full text

Abstract:

Abstract The chemistry of phosphorus in star- and planet-forming regions is poorly understood, despite the central role of phosphorus in terrestrial biochemistry. We present Atacama Large Millimeter/submillimeter Array band 3 and 4 observations of PO and PN toward the Class I protostar B1-a, representing the first spatially resolved observations of phosphorus carriers toward a solar-type star-forming region. The phosphorus molecules emit from two distinct clumps, which coincide with regions where the protostellar outflow (traced by SiO) interacts with a filament of dense gas (traced by CCS). T

APA, Harvard, Vancouver, ISO, and other styles

49

Tasca, Andrea Luca, Gemma Mannarino, Riccardo Gori, Sandra Vitolo, and Monica Puccini. "Phosphorus recovery from sewage sludge hydrochar: process optimization by response surface methodology." Water Science and Technology 82, no. 11 (2020): 2331–43. http://dx.doi.org/10.2166/wst.2020.485.

Full text

Abstract:

Abstract Hydrothermal carbonization can play an innovative role in sewage sludge (SS) treatment and valorization, as well as in phosphorus recovery. In this study, leaching tests using nitric acid were performed on hydrochar from SS and the influence of pH (1–3.5), leaching time (30–240 min), and solid/liquid (S/L) ratio (5–20 wt%) was analyzed and optimized according to the Design of Experiments method, under the Response Surface Methodology approach. The highest phosphorus extraction yield (59.57%) was achieved at the lowest pH and the lowest S/L ratio, while an increase in temperature from

APA, Harvard, Vancouver, ISO, and other styles

50

Zhou, Jin Dong, Xue Gong Bi, and Fu Yang. "Laboratory Investigation of the High Phosphorus Hot Metal Dephosphorization Pretreatment Using Multi Phase Flux." Advanced Materials Research 785-786 (September 2013): 31–37. http://dx.doi.org/10.4028/www.scientific.net/amr.785-786.31.

Full text

Abstract:

The difficult problems in dephosphorization pretreatment of the high phosphorous hot metal are extremely high flux consumption and very large temperature drop. Dephosphorization with multi phase flux would be helpful to solve these difficulties. In this paper, 2CaO·SiO2 was used as the solid phase and the effect of slag composition and solid/slag mass ratio on dephosphorization efficiency of the high phosphorus hot metal was investigated in the laboratory. Dephosphorization capacity of nine multi phase fluxes was determined by means of equilibrium experiment and it is revealed that dephosphori

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!