scholarly journals Production scheme for diagnostic-therapeutic radioisotopes by accelerator neutrons

2021 ◽  
Vol 97 (6) ◽  
pp. 292-323
Author(s):  
Yasuki NAGAI
Keyword(s):  
Production Scheme

Integrated Subsurface to Surface Modeling to Assess Reservoir Uncertainty Quantification to A Carbonate Reservoir

2020 ◽  
Author(s):  
A. Chaterine
Keyword(s):  
Uncertainty Quantification ◽  
Gas Production ◽  
Carbonate Reservoir ◽  
Production Volume ◽  
Production Forecast ◽  
Uncertainty Range ◽  
Field Development ◽  
Production Forecasting ◽  
Production Scheme ◽  
Rock Compressibility

This study accommodates subsurface uncertainties analysis and quantifies the effects on surface production volume to propose the optimal future field development. The problem of well productivity is sometimes only viewed from the surface components themselves, where in fact the subsurface component often has a significant effect on these production figures. In order to track the relationship between surface and subsurface, a model that integrates both must be created. The methods covered integrated asset modeling, probability forecasting, uncertainty quantification, sensitivity analysis, and optimization forecast. Subsurface uncertainties examined were : reservoir closure, regional segmentation, fluid contact, and SCAL properties. As the Integrated Asset Modeling is successfully conducted and a matched model is obtained for the gas-producing carbonate reservoir, highlights of the method are the following: 1) Up to ± 75% uncertainty range of reservoir parameters yields various production forecasting scenario using BHP control with the best case obtained is 335 BSCF of gas production and 254.4 MSTB of oil production, 2) SCAL properties and pseudo-faults are the most sensitive subsurface uncertainty that gives major impact to the production scheme, 3) EOS modeling and rock compressibility modeling must be evaluated seriously as those contribute significantly to condensate production and the field’s revenue, and 4) a proposed optimum production scenario for future development of the field with 151.6 BSCF gas and 414.4 MSTB oil that yields a total NPV of 218.7 MMUSD. The approach and methods implemented has been proven to result in more accurate production forecast and reduce the project cost as the effect of uncertainty reduction.

Experimental and numerical studies on production scheme to improve energy efficiency of bitumen production through insitu oil-in-water (O/W) emulsion

Energy ◽  
2021 ◽  
pp. 122700
Author(s):  
Olalekan S. Alade ◽  
Mohamed Mahmoud ◽  
Dhafer Al Shehri ◽  
Esmail M.A. Mokheimer ◽  
Kyuro Sasaki ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Improve Energy Efficiency ◽  
Numerical Studies ◽  
Oil In Water ◽  
Production Scheme

A new olive oil production scheme with almost zero wastes

2020 ◽  
Author(s):  
Alexis G. Pantziaros ◽  
Xenofon A. Trachili ◽  
Andreas D. Zentelis ◽  
Varvara Sygouni ◽  
Christakis A. Paraskeva
Keyword(s):  
Olive Oil ◽  
Oil Production ◽  
Production Scheme

scholarly journals Bt cotton seed purity in Burkina Faso: status and lessons learnt

2020 ◽  
Vol 3 (1) ◽  
Author(s):  
Larbouga BOURGOU ◽  
Ester KARGOUGOU ◽  
Mahamadou SAWADOGO ◽  
Michel FOK
Keyword(s):  
Burkina Faso ◽  
Seed Production ◽  
Enzyme Linked Immunosorbent Assay ◽  
Minor Role ◽  
Bt Cotton ◽  
Cotton Production ◽  
Organic Cotton ◽  
Production Scheme ◽  
Cotton Seeds ◽  
Varietal Purity

Abstract Background Since the commercial release of Bt cotton in Burkina Faso in 2009, the issue of seed purity in producers’ fields has rarely been addressed in an unbiased and objective manner. The potential for contamination of conventional seed varieties with Bt traits and the consequent threat to the continuation of organic cotton production has been documented. However, studies are rare on the varietal purity of Bt cotton seeds, despite the implications for the effectiveness and sustainability of their use. This paper compensates for the lack of research on the varietal purity of cotton seeds in Burkina Faso by reporting the results of Enzyme linked immunosorbent assay tests collected in 2015 on samples of both conventional and Bt varieties from 646 fields. Results According to the conservative criteria used to declare the presence of a Bt gene in a given variety (more than 10% of seeds of conventional variety exhibit Bt traits, and at least 90% of seeds of Bt variety exhibit Bt traits), seed purity was very questionable for both types of variety. For the supposedly conventional variety, the Cry1Ac gene was observed in 63.6% of samples, the Cry2Ab gene was observed in 59.3% of samples, and both genes were detected in 52.2% of the seed samples. Only 29.3% of the seeds that were supposed to be of conventional type contained no Bt genes. Conversely, for the labeled Bt variety, the Cry1Ac gene was found in only 59.6% of samples, the Cry2Ab gene was found in 53.6% of the samples, and both genes were found in 40.4% of the samples. Finally, for the seeds that were supposed to contain both genes (Bollguard 2), both Cry1Ac and Cry2Ab genes were found in only 40.4% of the samples, only one of the genes was found in 32.4% of the samples, and 27.2% of the seeds in the samples contained neither. Two factors are responsible for the severe lack of seed purity. First, conventional varieties are being contaminated with Bt traits because of a failure to revise the seed production scheme in Burkina Faso to prevent cross-pollination. Second, the original Bt seeds provided to Burkina Faso lacked varietal purity. The organic sector plays a very minor role in the cotton sector of Burkina Faso (production of organic cotton totaled 453 t in 2018/2019, out of national cotton production of 183 000 t). Nevertheless, the lack of purity in conventional seed varieties is a threat to efforts to expand certified organic cotton production. The poor presence of Bt proteins in supposed Bt varieties undermines their effectiveness in controlling pests and increases the likelihood of the development of resistance among pest populations. Conclusion Our results show the extent of purity loss when inadequate attention is paid to the preservation of seed purity. Pure conventional seeds could vanish in Burkina Faso, while Bt seeds do not carry the combination of the expected Bt traits. Any country wishing to embark on the use of Bt cotton, or to resume its use, as in the case of Burkina Faso, must first adjust its national seed production scheme to ensure that procedures to preserve varietal purity are enforced. The preservation of varietal purity is necessary to enable the launch or the continuation of identity-cotton production. In addition, the preservation of varietal purity is necessary to ensure the sustainable effectiveness of Bt cotton. In order to ensure that procedures to preserve varietal purity are observed, seed purity must be tested regularly, and test results must be published.

Concentration Enrichment of Fermentation Derived Acetic Acid: Transport Modeling of Forward Osmosis-Nanofiltration Integrated System

2019 ◽  
Vol 15 (1) ◽  
Author(s):  
Jayato Nayak ◽  
Parimal Pal ◽  
Zunipa Roy ◽  
Sankha Chakrabortty ◽  
Pinaki Dey ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Concentration Polarization ◽  
Transport Model ◽  
Acid Output ◽  
Forward Osmosis ◽  
Integrated System ◽  
High Concentration ◽  
Excellent Performance ◽  
Production Scheme ◽  
Internal Concentration

Abstract Forward Osmosis (FO)-Nanofiltration (NF) integration as the final product polishing step enables high concentration of acetic acid output through continuous dehydration of fermentation derived product. A mathematical transport model has been developed based on external and internal concentration polarization modulus of FO and extended Nernst–Plank equation for NF to capture the flux and rejection trends from those membranes. The modular designed production scheme ensured high flux (45 Lm−2 h−1), concentration (962 g L−1) and purity (>98 %) of acetic acid under non-neutralization condition. Excellent performance of the model is reflected in low relative error (<0.05), high Willmott d-index (>0.97) and high correlation coefficient (>0.98).

scholarly journals Simulating lightning NO production in CMAQv5.2: evolution of scientific updates

2019 ◽  
Vol 12 (7) ◽  
pp. 3071-3083 ◽  
Author(s):  
Daiwen Kang ◽  
Kenneth E. Pickering ◽  
Dale J. Allen ◽  
Kristen M. Foley ◽  
David C. Wong ◽  
...  
Keyword(s):  
Air Quality ◽  
No Production ◽  
Time And Space ◽  
Meteorological Model ◽  
Climate Conditions ◽  
Lightning Detection ◽  
Production Scheme ◽  
Log Linear ◽  
Climate Studies ◽  
Total Column

Abstract. This work describes the lightning nitric oxide (LNO) production schemes in the Community Multiscale Air Quality (CMAQ) model. We first document the existing LNO production scheme and vertical distribution algorithm. We then describe updates that were made to the scheme originally based on monthly National Lightning Detection Network (mNLDN) observations. The updated scheme uses hourly NLDN (hNLDN) observations. These NLDN-based schemes are good for retrospective model applications when historical lightning data are available. For applications when observed data are not available (i.e., air quality forecasts and climate studies that assume similar climate conditions), we have developed a scheme that is based on linear and log-linear parameters derived from regression of multiyear historical NLDN (pNLDN) observations and meteorological model simulations. Preliminary assessment for total column LNO production reveals that the mNLDN scheme overestimates LNO by over 40 % during summer months compared with the updated hNLDN scheme that reflects the observed lightning activity more faithfully in time and space. The pNLDN performance varies with year, but it generally produced LNO columns that are comparable to hNLDN and mNLDN, and in most cases it outperformed mNLDN. Thus, when no observed lightning data are available, pNLDN can provide reasonable estimates of LNO emissions over time and space for this important natural NO source that influences air quality regulations.

scholarly journals Economic efficiency calculation of production of functional product based on milk serum and medicinal plant extract at the food industry enterprise

2020 ◽  
Vol 176 ◽  
pp. 05021
Author(s):  
Alexsandr Prosekov ◽  
Tatiana Alabina ◽  
Evgeny Bryukhachev ◽  
Alexandra Zaushintsena
Keyword(s):  
Economic Efficiency ◽  
Food Industry ◽  
Raw Materials ◽  
Biologically Active ◽  
Market Prices ◽  
Milk Serum ◽  
Russian Economy ◽  
Operating Process ◽  
Functional Product ◽  
Production Scheme

Possibility of medicinal plants use in the production of functional products on the example of whey beverage based on rosewort liquid concentrate, which has immunomodulatory, antioxidant, antitumor, nootropic, antidepressant properties, having a multifunctional value in the application, is proved in the works of different authors. The paper offers process and technological production scheme of pasteurized whey beverage with apple juice and pulp enriched with biologically active substances of rosewort “Golden Reserve”. The economic efficiency of beverage introduction into production at the operating process line of food industry enterprise “MPA (Milk production association) “Skomoroshka“” LLC located in Kemerovo region (Kuzbass) is calculated for mid-term. Average market prices for raw materials and finished products are taken into account by the following indicators: expenses, cost, results, cash flow and others based on accounting and economic approaches taking into account non-stationarity of the Russian economy.

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