Effects of High Phosphorus Concentration on Diffusion into Silicon

1968 ◽  
Vol 115 (1) ◽  
pp. 84 ◽  
Author(s):  
M. C. Duffy ◽  
F. Barson ◽  
J. M. Fairfield ◽  
G. H. Schwuttke
Keyword(s):  
Phosphorus Concentration ◽  
High Phosphorus

scholarly journals Development of Amorphous Nickel-Phosphorus Plating Film with High Phosphorus Concentration.

1991 ◽  
Vol 30 (6) ◽  
pp. 542-544
Author(s):  
M. Ishii ◽  
J. Tsuda ◽  
T. Tsuzuki ◽  
T. Oka ◽  
T. Kaimasu
Keyword(s):  
Phosphorus Concentration ◽  
High Phosphorus

scholarly journals Peritectic Transformation in Low Carbon Steels Containing High Phosphorus Concentration

2008 ◽  
Vol 48 (3) ◽  
pp. 334-339 ◽  
Author(s):  
Masayuki Kudoh ◽  
Kazuaki Igarashi ◽  
Kiyotaka Matsuura ◽  
Kenichi Ohsasa
Keyword(s):  
Carbon Steels ◽  
Phosphorus Concentration ◽  
Peritectic Transformation ◽  
Low Carbon ◽  
Low Carbon Steels ◽  
High Phosphorus

Recombination centers in aluminum‐doped silicon diffused in high phosphorus concentration

1977 ◽  
Vol 48 (6) ◽  
pp. 2576-2580 ◽  
Author(s):  
Raymond L. Marchand ◽  
Alan R. Stivers ◽  
C. T. Sah
Keyword(s):  
Phosphorus Concentration ◽  
High Phosphorus ◽  
Doped Silicon ◽  
Recombination Centers

An efficient technology of phosphorous removal from wastewater by the low-grade oolitic hematite with high phosphorous

2019 ◽  
Vol 116 (1) ◽  
pp. 116
Author(s):  
Xuejiao Zhou ◽  
Yongli Chen ◽  
Wentang Xia ◽  
Jianguo Yin ◽  
Xiaoli Yuan
Keyword(s):  
Phosphorus Removal ◽  
Ph Value ◽  
Acid Leaching ◽  
Isotherm Models ◽  
Phosphorus Concentration ◽  
Low Grade ◽  
Efficient Technology ◽  
Phosphorus Adsorption ◽  
Adsorbent Dosage ◽  
High Phosphorus

The present study aims to develop a new potentially low-cost and efficient approach to removing soluble inorganic phosphorus from acid leaching wastewater. This wastewater was of high acidity and high phosphorus content. Low-grade oolitic hematite with high phosphorus (LGOHWHP) was chosen as an economic adsorbent and was also used to adjust the acidity of the solution. The adsorption isotherms, adsorption thermodynamics, and effect of various parameters such as pH value, contact time, temperature and adsorbent dosage on the phosphorus removal from wastewater were investigated. The results showed that pH value and adsorbent dosage have a significant impact on the phosphorus removal. The phosphorus adsorption results fitted very well to Langmuir and Freundlich adsorption isotherm models, and the adsorption process was an endothermic process. At the optimum parameters pH 5.5, reaction temperature of 302 K with 20 g L−1 LGOHWHP, the phosphorus removal percentage of about 95% and the phosphorus concentration in the wastewater of about 0.27 mg L−1 are achieved after 60 min. The results indicate that the phosphorus concentration in wastewater after dephosphorization by the LGOHWHP completely meets the requirements of the national wastewater discharge standard in China. This research provides an efficient and environmentally friendly technology to remove phosphorus from wastewater.

High phosphorus concentration in Trifolium balansae and Medicago polymorpha seed increases in herbage and seed yields in the field

1989 ◽  
Vol 29 (6) ◽  
pp. 791 ◽  
Author(s):  
MDA Bolland ◽  
MJ Baker
Keyword(s):  
Western Australia ◽  
Field Experiments ◽  
Soil Types ◽  
Phosphorus Concentration ◽  
Medicago Polymorpha ◽  
High Phosphorus ◽  
P Concentration ◽  
Seed Yields

Seed of Trifolium balansae and Medicago polymorpha, of the same size (mean ± s.d., T. balansae 0.8 ± 0.01 mglseed, M. polymorpha 3.6 ± 0.05 mg/seed) but with increasing phosphorus (P) concentration in the seed (T. balansae 0.34 to 0.63% P, M. polymorpha 0.40 to 0.64% P), were sown in field experiments as singlestrain, dense, ungrazed swards on 2 different soil types (a sand and a lateritic gravel sand) in south-western Australia. Different amounts of superphosphate were drilled with the seed (5-40 kg P/ha for the sand, and 15-100 kg P/ha for the lateritic gravel sand). Increasing P concentration in seed increased yields of dried herbage measured at each harvest, and also increased seed yields (measured for M. polymorpha only). Increasing P concentration in the seed increased the effectiveness of superphosphate drilled with the seed, so that less fertiliser was required to produce the same yield as P concentration in the seed increased.

scholarly journals Impact of nutritional index on the association between phosphorus concentrations and mortality in haemodialysis patients: a cohort study from dialysis outcomes and practice pattern study in Japan

BMJ Open ◽  
2017 ◽  
Vol 7 (8) ◽  
pp. e016682 ◽  
Author(s):  
Shingo Fukuma ◽  
Tatsuyoshi Ikenoue ◽  
Tadao Akizawa ◽  
Shunichi Fukuhara
Keyword(s):  
Cohort Study ◽  
Harmful Effect ◽  
Practice Pattern ◽  
Phosphorus Concentration ◽  
High Phosphorus ◽  
Nutritional Index ◽  
Nutritional Risk Index ◽  
All Cause Mortality ◽  
Dialysis Outcomes ◽  
The Impact

ObjectivesWhile maintenance of both phosphorus concentration and nutritional status is a major concern in managing haemodialysis patients, the interaction between these parameters is not well understood. The aim of this study was to assess whether or not nutritional index influences the association between phosphorus concentration and all-cause mortality.DesignA cohort study.SettingThe Dialysis Outcomes and Practice Pattern Study, which included 99 representative dialysis facilities in Japan between 1997 and 2010.ParticipantsA total of 6230 adult haemodialysis patients who had spent at least 6 months on haemodialysis.Main predictorsSix categories based on time-averaged factors of the geriatric nutritional risk index (GNRI; the lowest two and highest tertiles) and phosphorus concentration (<3.5, 3.5 to <6 and ≥6 mg/dL).Primary outcome measureAll-cause mortality rate.AnalysisTime-dependent Cox regression adjusting for potential confounders.ResultsDuring the follow-up period (12 294 person-years), we noted 561 deaths (4.6 per 100 person-years), and both high phosphorus concentrations and low-middle GNRI were separately associated with all-cause mortality. The harmful effect of high phosphorus concentrations on all-cause mortality was stronger in patients with high GNRI than in those with low-middle GNRI. On the other hand, the harmful effect of low phosphorus concentrations was stronger in those with low-middle GNRI than in those with high GNRI. Relative excess risk due to interaction (RERI) between high phosphorus concentrations and low-middle GNRI was −0.57, indicating an antagonistic interaction. We also observed a significant statistical multiplicative interaction between phosphorus concentrations and GNRI (p=0.05 by likelihood ratio test).ConclusionsThe association between time-averaged serum phosphorus concentration and all-cause mortality differs across the nutritional index. Accordingly, nutritional index should be considered when the impact of phosphorus concentration on mortality in haemodialysis patients is evaluated.

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