Research on E&P efficiency metrics to support SKK Migas mission utilizing CRISP-DM methodology

Root morphology and architecture are believed to be important for plant phosphorus (P) efficiency, but their genetic information is relatively scarce. In the present study, a field and a specially designed minirhizotron experiments were conducted using two soybean (Glycine max L. Merr.) genotypes and their 88 recombinant inbred lines (RILs) to elucidate the genetic variability for root morph-architecture traits and root growth dynamics as related to P efficiency in soybean. The results indicated that the root morph-architecture traits were continually segregated in the RILs with a normal distribution, indicating which are possibly controlled by quantitative trait loci. Significantly positive correlations were found between root and P traits, suggesting feasibility of screening P efficient genotype through simple selection of root traits in field. Most root morph-architecture traits were closely correlated, showing a coordinating contribution to P efficiency. Furthermore, root morphological traits always had higher heritability than architecture traits, thus, could serve as more reliable index in field selection. The dynamic parameters of root growth from the minirhizotron experiment showed that the P efficient genotype established longer and larger root system with preferring distribution in surface layer and also kept more active roots, therefore, had a better growth performance in field, than the P-inefficient genotype. Taken together, this is the first report on in situ root growth dynamics and its relation to P efficiency using minirhizotron systems in crops. Our findings help to better understand the relationships between P efficiency and root traits and, thus, facilitate development of P efficient genotypes in crops.

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Optimizing Casing Cut and Pull Operations Efficiency Using Ultrasonic Logging Data

10.2118/205431-ms ◽

2021 ◽

Author(s):

Tonje Winther ◽

Guillermo Andres Obando Palacio ◽

Amit Govil

Keyword(s):

Data Interpretation ◽

Economic Life ◽

P Efficiency ◽

Sonic Log ◽

The Status ◽

Exploration Drilling ◽

Well Abandonment ◽

The Cost ◽

New Generation

Abstract Thousands of wells will enter the plug and abandonment (P&A) phase across the Norwegian Continental Shelf (NCS), either for permanent well abandonment or section abandonment with subsequent sidetracks. In the medium and long term, more wells will be added to follow the same path as exploration, drilling, and production continues. The cost of abandonment operations demands improvement of how P&A operations are performed. A critical, and often time-consuming operation, of well or section abandonment is to cut and pull (C&P) some of the casing strings. Uncertainties about the status of the annular contents and the material within it, such as settled solids, contaminated cement, or well geometry might pose restraints that could hinder the C&P efficiency. The uncertainties may cause operations to deviate from the plan, increasing the time and the costs required. New-generation ultrasonic tools, in combination with sonic tools, provide information about the annulus material with a detailed map of the axial and azimuthal variations of the annulus contents. The geometric position of the inner pipe can be determined relative to the outer casing or borehole using advanced measurements. Logging with ultrasonic and sonic tools is a noninvasive method that can increase the efficiency of C&P operations. In this paper we discuss three case studies of wells ranging from 2 to 40 years old. Some of the wells have reached the end of their economic life and are now ready for permanent plug and abandonment (PP&A) or slot recovery. Each case is unique with different casing sizes being retrieved, along with varied annulus contents observed from ultrasonic and sonic log data. The innovative use of the data interpretation with advanced workflows decreased uncertainties about the annulus contents and enabled following an informed C&P strategy. In all three cases, the casing sections were retrieved without difficulties from the recommended depths of the analysis. Casing milling was performed in intervals where C&P was not supported by the data analysis.

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Relations among Growth, Nodulation, P Efficiency and Proton Efflux for Annual Legumes

Asian Journal of Plant Sciences ◽

10.3923/ajps.2009.335.343 ◽

2009 ◽

Vol 8 (5) ◽

pp. 335-343

Author(s):

K. Sungthongw ◽

R. Poss ◽

J.J. Drevon

Keyword(s):

P Efficiency ◽

Proton Efflux ◽

Annual Legumes

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Phosphorus restriction influences P efficiency and ornamental quality of poinsettia and chrysanthemum

Scientia Horticulturae ◽

10.1016/j.scienta.2020.109316 ◽

2020 ◽

Vol 267 ◽

pp. 109316

Author(s):

Siri Caspersen ◽

Karl-Johan Bergstrand

Keyword(s):

P Efficiency

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Ileal Transcriptome Profiles of Japanese Quail Divergent in Phosphorus Utilization

International Journal of Molecular Sciences ◽

10.3390/ijms21082762 ◽

2020 ◽

Vol 21 (8) ◽

pp. 2762 ◽

Cited By ~ 2

Author(s):

Michael Oster ◽

Henry Reyer ◽

Nares Trakooljul ◽

Frank M. Weber ◽

Lu Xi ◽

...

Keyword(s):

Japanese Quail ◽

Molecular Mechanisms ◽

Expression Patterns ◽

Animal Husbandry ◽

Coturnix Japonica ◽

P Efficiency ◽

Mitochondrial Energy Metabolism ◽

False Discovery ◽

P Utilization ◽

Total P

Phosphorus (P) is an essential component for all living beings. Low P diets prompt phenotypic and molecular adaptations to maintain P homeostasis and increase P utilization (PU). Knowledge of the molecular mechanisms of PU is needed to enable targeted approaches to improve PU efficiency and thus lower P excretion in animal husbandry. In a previous population study, Japanese quail were subjected to a low P diet lacking mineral P and exogenous phytase. Individual PU was determined based on total P intake and excretion. A subset of 20 extreme siblings discordant for PU was selected to retrieve gene expression patterns of ileum (n = 10 per PU group). Sequencing reads have been successfully mapped to the current Coturnix japonica reference genome with an average mapping rate of 86%. In total, 640 genes were found to be differentially abundant between the low and high PU groups (false discovery rate ≤ 0.05). Transcriptional patterns suggest a link between improved PU and mitochondrial energy metabolism, accelerated cell proliferation of enterocytes, and gut integrity. In assessing indicators of the efficient use of macro- and micronutrients, further research on turnover and proliferation rates of intestinal cells could provide an approach to improve P efficiency in poultry species.

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Effect of elevated CO2 and temperature on phosphorus efficiency of wheat grown in an Inceptisol of subtropical India

Plant Soil and Environment ◽

10.17221/749/2011-pse ◽

2012 ◽

Vol 58 (No. 5) ◽

pp. 230-235 ◽

Cited By ~ 10

Author(s):

Manoj-Kumar ◽

A. Swarup ◽

A.K. Patra ◽

J.U. Chandrakala ◽

K.M. Manjaiah

Keyword(s):

Grain Yield ◽

Dry Weight ◽

P Uptake ◽

Utilization Efficiency ◽

Phosphorus Efficiency ◽

Total Biomass ◽

P Efficiency ◽

Plant Parts ◽

P Fertilizer ◽

P Utilization

In a phytotron experiment, wheat was grown under two levels of atmospheric CO2 [ambient (385 ppm) vs. elevated (650 ppm)], two levels of temperature (ambient vs. ambient +3°C) superimposed with three levels of phosphorus (P) fertilization: 0, 100, and 200% of recommended dose. Various measures of P acquisition and utilization efficiency were estimated at crop maturity. In general, dry matter yields of all plant parts increased under elevated CO2 (EC) and decreased under elevated temperature (ET); however, under concurrently elevated CO2 and temperature (ECT), root (+36%) and leaf (+14.7%) dry weight increased while stem (–12.3%) and grain yield (–17.3%) decreased, leading to a non-significant effect on total biomass yield. Similarly, total P uptake increased under EC and decreased under ET, with an overall increase of 17.4% under ECT, signifying higher P requirements by plants grown thereunder. Although recovery efficiency of applied P fertilizer increased by 27%, any possible benefit of this increase was negated by the reduced physiological P efficiency (PPE) and P utilization efficiency (PUtE) under ECT. Overall, there was ~17% decline in P use efficiency (PUE) (i.e. grain yield/applied P) of wheat under ECT.

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Effect of altering the non-structural: structural carbohydrate ratio in a pasture diet on milk production and ruminal metabolites in cows in early and late lactation

Animal Science ◽

10.1017/s1357729800015988 ◽

1997 ◽

Vol 64 (3) ◽

pp. 393-402 ◽

Cited By ~ 29

Author(s):

V. R. Carruthers ◽

P. G. Neil ◽

D. E. Dalley

Keyword(s):

Protein Synthesis ◽

Milk Production ◽

Milk Yield ◽

Latin Square ◽

Carbohydrate Intake ◽

Microbial Protein ◽

P Efficiency ◽

Total Carbohydrate ◽

Microbial Protein Synthesis ◽

Digestible Organic Matter

AbstractThe effect on digestibility, ruminal metabolites, microbial protein synthesis and milk production of manipulating the non-structural (NSC): structural (SO carbohydrate ratio in a predominantly pasture diet was investigated in cows in early (trial 1) and late (trial 2) lactation. Twenty-four cows in trial 1 and 15 cows in trial 2 were offered pasture only (P), 0·85 P plus 0·15 NSC/protein mixture (PR), and P plus an additional 0·1 (trial 1) or 0·15 (trial 2) NSC (PE) in a Latin-square arrangement. All diets were isonitrogenous and P and PR were isoenergetic. PE but not PR increased microbial protein synthesis and decreased ruminal ammonia and milk urea levels, compared with P. Efficiency of microbial synthesis (g N per kg digestible organic matter intake) was not altered by treatment. Treatments had minor effects on ruminal pH and no effect on volatile fatty acid concentrations. PE and PR did not affect milk yield or protein yield and decreased fat yield compared with P in trial 1. Milk yield was increased on PE and PR compared with P and was greater on PE than PR, in trial 2. Yields of fat and protein were higher on PE than on P and yield of protein was higher on PR than on P. The results suggest that increasing the ratio of NSC: protein by increasing total carbohydrate intake was more effective in improving nitrogen utilization in the rumen than was increasing the NSC: SC ratio without increasing carbohydrate intake.

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Effect of organic ligand-decorated ZnO nanoparticles as a cathode buffer layer on electricity conversion efficiency of an inverted solar cell

RSC Advances ◽

10.1039/c7ra11902j ◽

2018 ◽

Vol 8 (3) ◽

pp. 1418-1426 ◽

Cited By ~ 9

Author(s):

Alireza Samavati ◽

Zahra Samavati ◽

A. F. Ismail ◽

M. H. D. Othman ◽

Mukhlis A. Rahman ◽

...

Keyword(s):

Energy Source ◽

Renewable Energy Source ◽

Solar Cell ◽

Fossil Fuels ◽

Organic Ligand ◽

Efficiency Improvement ◽

P Efficiency ◽

Cathode Buffer Layer ◽

Inverted Solar Cell ◽

Significant Attention

Efficiency improvement of the industrial scale solar cells to capture sunlight as an important renewable energy source is attracting significant attention to prevent the consumption of a finite supply of unsustainable fossil fuels.

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