Journal articles: 'Improved recovery'

1

Mitka, M. "Stroke Recovery Improved." JAMA: The Journal of the American Medical Association 287, no. 4 (January 23, 2002): 443—a—443. http://dx.doi.org/10.1001/jama.287.4.443-a.

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Mitka, Mike. "Stroke Recovery Improved." JAMA 287, no. 4 (January 23, 2002): 443. http://dx.doi.org/10.1001/jama.287.4.443-jqu10013-2-1.

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Durzan, Don J. "Improved Somatic Embryo Recovery." Nature Biotechnology 5, no. 6 (June 1987): 636–38. http://dx.doi.org/10.1038/nbt0687-636c.

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Winecki, Slawomir, Haskell J. Fought, Meghan Harley Yugulis, Darwin Argumedo, William W. Gibbs, Robert A. Stonebraker, Brian J. Sikorski, Martin V. Melnik, and Richard J. Davis. "Improved oil recovery sensor." Sensors and Actuators A: Physical 295 (August 2019): 308–16. http://dx.doi.org/10.1016/j.sna.2019.06.018.

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Yuan, DongBing, Bintai Xu, and Sheng Gao. "A Recovery Algorithm of Power Quality Big Data Based on Improved Differential Kriging." Journal of Nanoelectronics and Optoelectronics 16, no. 9 (September 1, 2021): 1444–49. http://dx.doi.org/10.1166/jno.2021.3099.

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The integrity of power quality big data directly affects the state sensing accuracy and operation safety of the power system. Therefore, the recovery algorithm of power quality big data based on improved differential Kolding is studied to improve the big data recovery effect. The trend turning point is used to divide the time series of power quality big data, and the characteristic matrix of time series is constructed. The recovery model of power quality big data is built according to the characteristic matrix. By improving the differential Kriging solution model, the estimated value of the data to be recovered is obtained and the big data recovery is completed. Experimental results show that the convergence speed is the fastest when the initial scaling factor is 0.3. The algorithm can effectively recover the big data of random missing and continuous missing. In different fault recovery scenarios, the signal-to-noise ratio (SNR) is high, the structure similarity value is high, the data recovery accuracy is accurate, and the integrity of the restored data is better.

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Pemmadi, Venkata Rao, JInal Patel, and Ashish Nagar. "Enhanced Oil Recovery." International Journal for Research in Applied Science and Engineering Technology 11, no. 2 (February 28, 2023): 834–41. http://dx.doi.org/10.22214/ijraset.2023.48875.

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Abstract: Enhanced oil recovery procedures, which are part of improved oil recovery, are used to recover the leftover oil include Steam injection, Polymer flooding, Gas injection and Water injection. Only a small percentage of the total hydrocarbons in the reservoir can be recovered using standard oil recovery technologies. Even if normal recovery procedures are implemented, almost 2 trillion barrels of conventional oil and 5 trillion barrels of heavy oil will remain in reservoirs around the world. Many factors, both economic and technological, influence the strategy chosen and the projected recovery. The study evaluates the EOR approaches that are currently in use in the field. The current EOR technologies are put into context, with the technical reasons for their failure highlighted. Recovering additional oil is difficult and expensive, and it has only been done successfully in a few cases under strict conditions. Despite this, EOR will continue to play a significant role in oil production due to rising energy demand and constrained supply. It is estimated that a significant amount of research is required to develop new technologies for recovering almost two-thirds of the oil that remains unrecoverable in the reservoir. New methods of enhanced oil recovery improves the efficiency of existing processes and reduce demand for new reserves in the longer term. This paper represents the new technologies evolved in the petroleum industry for Enhanced oil recovery.

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Guhl, Andrea C., Valentin-G. Greb, Bernhard Schulz, and Martin Bertau. "An Improved Evaluation Strategy for Ash Analysis Using Scanning Electron Microscope Automated Mineralogy." Minerals 10, no. 5 (May 25, 2020): 484. http://dx.doi.org/10.3390/min10050484.

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Sewage slush ashes are materials composed of polyphase particles. Ashes are fine-grained with many amorphous components, and analytical techniques such as X-ray diffractometry cannot recover all the properties. For sewage sludge ash, treatment often focuses on phosphate recovery. Automated mineralogy techniques were applied in order to study phosphate associations and their behavior towards chemical processes. This work shows the distribution of phosphate content in sewage sludge ash and identifies the main recovered phosphate phases in acid leaching. Data interpretation was focused on the target material, phosphate. The approach documents spectra labelling with respect to one target component, phosphorus. This is a tool for assessing sewage sludge ashes towards their phosphate recovery potential and highlights issues processing needs to address.

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Liu, S. M., S. R. Sykes, and P. R. Clingeleffer. "Improved in ovulo embryo culture for stenospermocarpic grapes (Vitis vinifera L.)." Australian Journal of Agricultural Research 54, no. 9 (2003): 869. http://dx.doi.org/10.1071/ar03053.

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In ovulo embryo rescue techniques have been used to recover new hybrids from seedless × seedless grape crosses. This study was conducted to increase efficiency by investigating effects of genotype, medium, and ovule removal age on ovule elongation, embryo recovery, growth, and plantlet formation. Ovules from self-pollinated berries of seedless varieties Sunmuscat, Merbein Seedless, and Marroo Seedless were cultured at 30, 43, 60, and 70 days after flowering (DAF) in a range of media, some of which were supplemented with gibberellic acid (GA3) and indole-3-acetic acid (IAA). The effect of activated charcoal (AC) in media on rescued embryos was also investigated. Ovules exhibited continuous growth in vivo and in vitro. The most vigorous growth was observed for ovules cultured at 30 and 43 DAF, but more embryos were recovered from ovules cultured at 60 and 70 DAF. Ovule growth and embryo production in vitro were improved in Bouquet and Davis (BD) and Nitsch and Nitsch (NN) media. Supplementation with GA3 increased embryo recovery rates. Highest embryo recovery rates were 18.1%, 9.6%, and 12.2% for Sunmuscat, Merbein Seedless, and Marroo Seedless, respectively, when ovules were excised and cultured at 60 or 70 DAF in either BD or NN media. In vitro embryo survival and plantlet formation were higher for torpedo-shaped embryos, and improved greatly in 6-benzyladenine (BA)-supplemented woody plant (WP) medium containing 0.3% AC. Embryo recovery was improved by excising and culturing ovules at 60 DAF in BD or NN media and then by transferring embryos to WP medium supplemented with BA and AC.

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Feng, Jia Mei, Yuan Cheng Yao, and Ming Wei Qin. "An Improved Timing Recovery Algorithm Design." Applied Mechanics and Materials 130-134 (October 2011): 2997–3000. http://dx.doi.org/10.4028/www.scientific.net/amm.130-134.2997.

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Timing-jitter is an important index of timing recovery algorithm. This paper describes impact-factors of timing-jitter in an AWGN channel and discovers that input noise have great influence on it, proposed an improved timing recovery method for adding a loop gain to reduce it. Simulations demonstrate that a timing recovery with loop gain can have performance superior to that of without it, and got the conclusion that add loop gain at the range of 0.1 to 0.3 both timing jitter and timing recovery points can reach minimum values. Better yet, when choose a loop gain at 0.1, timing jitter decrease from ±0.2 to ±0.08, and system’s error rates also have obverse decrease.

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Niemann, Henrik, Jakob Stoustrup, and Bahram Shafai. "Improved recovery in H ∞ /LTR design." IFAC Proceedings Volumes 29, no. 1 (June 1996): 1363–68. http://dx.doi.org/10.1016/s1474-6670(17)57856-8.

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van Santvoort, Joris, and Michael Golombok. "Improved recovery from fractured oil reservoirs." Journal of Petroleum Science and Engineering 167 (August 2018): 28–36. http://dx.doi.org/10.1016/j.petrol.2018.04.002.

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Langley, Gordon. "New developments in improved oil recovery." Marine and Petroleum Geology 13, no. 5 (August 1996): 599. http://dx.doi.org/10.1016/0264-8172(96)88339-5.

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Cao, Yang, Zupeng Zhang, Xiaofeng Peng, Huaijun Qin, and Wenqing Li. "Research of Phase Compensation Methods Based on the Median Reweighted Wirtinger Flow Algorithm." Photonics 9, no. 9 (August 30, 2022): 619. http://dx.doi.org/10.3390/photonics9090619.

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An improved non-convex optimized phase recovery algorithm is used to compensate for wavefront aberrations caused by atmospheric turbulence and pointing errors in the vortex beam. The algorithm is divided into two parts: initialization and iteration. To reduce the effect of outliers, truncation rules are formulated in the initialization phase using the robustness of the sample median to obtain an initial value that is close to the global optimum. The relationship between the results of adjacent iterations is used in the iterations to calculate new weight coefficients, which are applied to the gradient descent to ensure the accuracy of the recovery results. Simulation experiments are carried out for different channel environments and different modes, and the results show that the improved phase recovery algorithm can accurately compensate for distorted wave fronts. The improved algorithm recovers the best results at different turbulence intensities and under the influence of different pointing errors. The recovered Strehl ratio can reach 0.9 and the mode purity can reach 0.92. Single-mode and multi-mode simulations were carried out, and the results show that the improved algorithm is effective and robust.

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Wang, Biao, and She Xiang Ma. "Improvement of Gaussian Random Measurement Matrices in Compressed Sensing." Advanced Materials Research 301-303 (July 2011): 245–50. http://dx.doi.org/10.4028/www.scientific.net/amr.301-303.245.

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Compressed sensing seeks to recover a sparse or compressible signal from a small number of linear and non-adaptive measurements. Gaussian random matrix is a kind of fundamental measurement matrices, but its performance isn’t perfect because of more errors in recovery. This paper studies a new kind of matrix based on improving Gaussian random matrices. Measure sparse signals with improved matrices and recover original signals with orthogonal matching pursuit. Numerical experiments showed that the quality of recovered signal by improved measurement matrices is better than Gaussian random matrices.

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Qu, Quanbo, Baocang Wang, Yuan Ping, and Zhili Zhang. "Improved Cryptanalysis of a Fully Homomorphic Symmetric Encryption Scheme." Security and Communication Networks 2019 (June 2, 2019): 1–6. http://dx.doi.org/10.1155/2019/8319508.

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Homomorphic encryption is widely used in the scenarios of big data and cloud computing for supporting calculations on ciphertexts without leaking plaintexts. Recently, Li et al. designed a symmetric homomorphic encryption scheme for outsourced databases. Wang et al. proposed a successful key-recovery attack on the homomorphic encryption scheme but required the adversary to know some plaintext/ciphertext pairs. In this paper, we propose a new ciphertext-only attack on the symmetric fully homomorphic encryption scheme. Our attack improves the previous Wang et al.’s attack by eliminating the assumption of known plaintext/ciphertext pairs. We show that the secret key of the user can be recovered by running lattice reduction algorithms twice. Experiments show that the attack successfully and efficiently recovers the secret key of the randomly generated instances with an overwhelming probability.

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Cai, Lingfei, Xuan Shi, and Jingrong Zhu. "Quality Recovery or Low-End Recovery? Profitability and Environmental Impact of Durable Product Recovery." Sustainability 11, no. 6 (March 21, 2019): 1726. http://dx.doi.org/10.3390/su11061726.

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With the rising awareness of environmental responsibility in industrial production, a series of recovery strategies have been developed and play different roles in achieving sustainability. In this study, we examine when quality recovery, low-end recovery, and hybrid recovery result in a win-win outcome where both profitability and environmental performance can be improved for a durable product manufacturer. We develop a game-theoretic model to analyze the manufacturer’s payoffs under different recovery strategies. A secondary market where used products can be resold among consumers is also considered. We obtain the results by comparing the profitability and environmental impact under each recovery strategy. Hybrid recovery causes both synergy and a contradiction effect between quality and low-end recovery. It always improves the win-win outcome of low-end recovery and it can also improve the win-win outcome of quality recovery under a high recovery standard when the recovered value is not too high. The technology improvement only achieves environmental sustainability under sufficient stringent recovery standard, otherwise, it may backfire and deteriorate the environment. We offer insights for the policymaker to understand the role of the recovery standard in achieving the win-win outcome and the importance of setting a proper recovery standard in achieving environmental sustainability.

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Maurice, Ange A., Khang Ngoc Dinh, Nicolas M. Charpentier, Andrea Brambilla, and Jean-Christophe P. Gabriel. "Dismantling of Printed Circuit Boards Enabling Electronic Components Sorting and Their Subsequent Treatment Open Improved Elemental Sustainability Opportunities." Sustainability 13, no. 18 (September 16, 2021): 10357. http://dx.doi.org/10.3390/su131810357.

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This critical review focuses on advanced recycling strategies to enable or increase recovery of chemical elements present in waste printed circuit boards (WPCBs). Conventional recycling involves manual removal of high value electronic components (ECs), followed by raw crushing of WPCBs, to recover main elements (by weight or value). All other elements remain unrecovered and end up highly diluted in post-processing wastes or ashes. To retrieve these elements, it is necessary to enrich the waste streams, which requires a change of paradigm in WPCB treatment: the disassembly of WPCBs combined with the sorting of ECs. This allows ECs to be separated by composition and to drastically increase chemical element concentration, thus making their recovery economically viable. In this report, we critically review state-of-the-art processes that dismantle and sort ECs, including some unpublished foresight from our laboratory work, which could be implemented in a recycling plant. We then identify research, business opportunities and associated advanced retrieval methods for those elements that can therefore be recovered, such as refractory metals (Ta, Nb, W, Mo), gallium, or lanthanides, or those, such as the platinum group elements, that can be recovered in a more environmentally friendly way than pyrometallurgy. The recovery methods can be directly tuned and adapted to the corresponding stream.

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Scott, Troy M., Jerzy Lukasik, and Samuel R. Farrah. "Improved method for recovery of bacteriophage from large volumes of water using negatively charged microporous filters." Canadian Journal of Microbiology 48, no. 4 (April 1, 2002): 305–10. http://dx.doi.org/10.1139/w02-019.

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Current virus-recovery procedures using negatively charged microporous filters provide an inexpensive, reliable method for the recovery and detection of enteroviruses from water and wastewater; however, adjustment of the test samples to pH 3.5 to promote enterovirus adsorption results in significant inactivation of bacteriophage and an inability to simultaneously recover them from large volumes of water using this procedure. Procedures specifically designed for the detection of bacteriophage are currently in use but generally are only effective for small volumes of water. Positively charged filters can be used to recover both enteroviruses and bacteriophage from large volumes of water at neutral pH; however, the filters are expensive. The addition of manganese chloride to test solutions at pH 3.5 prior to filtration through negatively charged Filterite® filters allowed for sampling of larger volumes of water by reducing the inactivation of bacteriophage and increasing the recovery of PRD1, MS2, and naturally isolated bacteriophage by a factor of four or five when compared with recoveries from solutions without MnCl2. This method provides an inexpensive, reliable alternative to large-volume bacteriophage recovery procedures that use positively charged filters at neutral pH.Key words: bacteriophage, water, recovery, microporous filters.

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Ahmed, Mohd, Devinder Singh, Saeed AlQadhi, and Majed A. Alrefae. "Improvement of the Zienkiewicz–Zhu Error Recovery Technique Using a Patch Configuration." Applied Sciences 11, no. 17 (September 1, 2021): 8120. http://dx.doi.org/10.3390/app11178120.

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The Zienkiewicz–Zhu (ZZ) super-convergent patch recovery technique based on a node neighborhood patch configuration is used most widely for recovery of the stress field of a finite element analysis. In this study, an improved ZZ recovery technique using element neighborhood patch configuration is proposed. The improved recovery procedure is based on recovery of the stress field in the least-squares sense over an element patch that consists of the union of the elements surrounding the element under consideration. The proposed patch configuration provides more sampling points and improves the performance of the standard ZZ recovery technique. The effectiveness and reliability of the improved ZZ recovery approach is demonstrated through plane elastic and plastic plate problems. The problem domain is discretized with triangular and quadrilateral elements of different sizes. A comparison of the quality of error estimation using the ZZ recovery of derivative field and recovery of the displacement field using similar element neighborhood patch configurations is also presented. The numerical results show that the ZZ recovery technique and the displacement recovery technique, using a modified patch configuration, yield better results, convergence rate, and effectivity as compared with the standard ZZ super-convergent patch recovery technique. It is concluded that the improved ZZ recovery technique-based adaptive finite element analysis is very effective for converging a predefined accuracy with a significantly smaller number of degrees of freedom, especially in an elastic problem. It is also concluded that the improved ZZ recovery technique captures the plastic deformation problem solution errors more reliably than the standard ZZ recovery technique.

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Li, Xiaoping, Hefeng Chen, Yanjun Liu, and Chin-Chen Chang. "Unordered Multisecret Sharing Based on Generalized Chinese Remainder Theorem." Security and Communication Networks 2020 (July 14, 2020): 1–8. http://dx.doi.org/10.1155/2020/6073721.

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Multisecret sharing schemes have been widely used in the area of information security, such as cloud storage, group authentication, and secure parallel communications. One of the issues for these schemes is to share and recover multisecret from their shareholders. However, the existing works consider the recovery of multisecret only when the correspondences between the secrets and their shares are definite. In this paper, we propose a multisecret sharing scheme to share and recover two secrets among the participants based on the generalized Chinese Remainder Theorem (GCRT), where the multisecret and their shares are unordered. To overcome the leakage of information, we propose an improved scheme including the improved sharing phase and the recovery phase. The improved scheme has not only a more secure performance but also a lower computation complexity. The conditions for recovery failure and success are also explored.

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Mansour, Hassan, Felix J. Herrmann, and Özgür Yılmaz. "Improved wavefield reconstruction from randomized sampling via weighted one-norm minimization." GEOPHYSICS 78, no. 5 (September 1, 2013): V193—V206. http://dx.doi.org/10.1190/geo2012-0383.1.

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Missing-trace interpolation aims to recover the gaps caused by physical obstacles or deliberate subsampling to control acquisition costs in otherwise regularly sampled seismic wavefields. Although transform-domain sparsity promotion has proven to be an effective tool to solve this recovery problem, current recovery techniques do not fully utilize a priori information derived from the locations of the transform-domain coefficients, especially when curvelet domain sparsity is exploited. We use recovery by weighted one-norm minimization, which exploits correlations between the locations of significant curvelet coefficients of different partitions, e.g., shot records, common-offset gathers, or frequency slices of the acquired data. We use these correlations to define a sequence of 2D curvelet-based recovery problems that exploit 3D continuity exhibited by seismic wavefields without relying on the highly redundant 3D curvelet transform. To test the performance of our weighted algorithm, we compared recoveries from different data sorting and partitioning scenarios for a seismic line from the Gulf of Suez. These tests demonstrated that our method is superior to standard [Formula: see text] minimization in terms of antialiasing capability, reconstruction quality and computational memory requirements.

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Reichert, Doreen, Louisa Adolph, Jan Philipp Köhler, Tobias Buschmann, Tom Luedde, Dieter Häussinger, and Claus Kordes. "Improved Recovery from Liver Fibrosis by Crenolanib." Cells 10, no. 4 (April 4, 2021): 804. http://dx.doi.org/10.3390/cells10040804.

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Chronic liver diseases are associated with excessive deposition of extracellular matrix proteins. This so-called fibrosis can progress to cirrhosis and impair vital functions of the liver. We examined whether the receptor tyrosine kinase (RTK) class III inhibitor Crenolanib affects the behavior of hepatic stellate cells (HSC) involved in fibrogenesis. Rats were treated with thioacetamide (TAA) for 18 weeks to trigger fibrosis. After TAA treatment, the animals received Crenolanib for two weeks, which significantly improved recovery from liver fibrosis. Because Crenolanib predominantly inhibits the RTK platelet-derived growth factor receptor-β, impaired HSC proliferation might be responsible for this beneficial effect. Interestingly, blocking of RTK signaling by Crenolanib not only hindered HSC proliferation but also triggered their specification into hepatic endoderm. Endodermal specification was mediated by p38 mitogen-activated kinase (p38 MAPK) and c-Jun-activated kinase (JNK) signaling; however, this process remained incomplete, and the HSC accumulated lipids. JNK activation was induced by stress response-associated inositol-requiring enzyme-1α (IRE1α) in response to Crenolanib treatment, whereas β-catenin-dependent WNT signaling was able to counteract this process. In conclusion, the Crenolanib-mediated inhibition of RTK impeded HSC proliferation and triggered stress responses, initiating developmental processes in HSC that might have contributed to improved recovery from liver fibrosis in TAA-treated rats.

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Hardikar, Anandwardhan A., Makarand V. Risbud, Claude Remacle, Brigitte Reusens, Joseph J. Hoet, and Ramesh R. Bhonde. "Islet Cryopreservation: Improved Recovery following Taurine Pretreatment." Cell Transplantation 10, no. 3 (April 2001): 247–53. http://dx.doi.org/10.3727/000000001783986756.

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Simple and efficient freezing methods with maximal postthawing recovery form the basis of ideal cryopreservation. Taurine (2-amino ethanesulfonic acid), an end-product of sulphur amino acid metabolism, is one of the most abundant free amino acids in the body. The membrane stabilizing, free radical scavenging, and osmoregulatory roles of taurine have been well documented. We studied the effect of physiological and supra-physiological concentrations (0.3 and 3.0 mM) of taurine on islet cryopreservation. Islet viability on cryopreservation was significantly improved in both the taurine-treated groups (91.9 ± 2.3% in 0.3 mM and 94.6 ± 1.58% in 3.0 mM group, p < 0.05) compared with the controls (85.7 ± 3.4%). Loss of peripheral islet cells was highly reduced in the taurine group, as examined under phase contrast and quantified by islet morphometric analysis (p < 0.05) using a digital image analysis system. Taurine-treated islets showed significant reduction in lipid peroxidation (0.905 and 0.848 nM MDA/μg protein for 0.3 and 3.0 mM taurine, respectively, p < 0.05) compared with control (1.307 nM MDA/μg protein) islets. In all, 500 islet equivalents (IE) of treated or control group islets were transplanted to BALB/c mice rendered diabetic with STZ. All animals showed a normal glucose clearance following a glucose load. Graft functionality was confirmed by normoglycemia (fasting plasma glucose: fpg < 150 mg/dl) after transplantation and reappearing hyperglycemia (fpg > 200 mg/dl) following removal of the graft. Suboptimal islet transplantation using 250 IE suggests that the grafted islet mass was inadequate for diabetes reversal. In addition, no significant differences were observed in the islet insulin content between the three groups following cryopreservation of the islets at −196°C. Our studies indicate that taurine pretreatment and its continued presence during islet cryopreservation improves the postthawing viable recovery of islets.

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Denney, Dennis. "Development of Improved-Hydrocarbon- Recovery-Screening Methods." Journal of Petroleum Technology 63, no. 01 (January 1, 2011): 43–44. http://dx.doi.org/10.2118/0111-0043-jpt.

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Morrow, Norman, and Jill Buckley. "Improved Oil Recovery by Low-Salinity Waterflooding." Journal of Petroleum Technology 63, no. 05 (May 1, 2011): 106–12. http://dx.doi.org/10.2118/129421-jpt.

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&NA;. "Recovery from arthroscopy not improved by diclofenac." Inpharma Weekly &NA;, no. 903 (September 1993): 16. http://dx.doi.org/10.2165/00128413-199309030-00035.

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Schwiebert, L., and R. Chintalapati. "Improved fault recovery for core based trees." Computer Communications 23, no. 9 (April 2000): 816–24. http://dx.doi.org/10.1016/s0140-3664(00)00159-6.

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Brown, Ralf D. "Improved recovery and reconstruction of DEFLATEd files." Digital Investigation 10 (August 2013): S21—S29. http://dx.doi.org/10.1016/j.diin.2013.06.003.

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Younggyun Kim and Jaekyun Moon. "Phase error compensation for improved timing recovery." IEEE Transactions on Magnetics 36, no. 5 (2000): 2190–92. http://dx.doi.org/10.1109/20.908353.

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Yang, Yung-Hun, Christopher Brigham, Laura Willis, ChoKyun Rha, and Anthony Sinskey. "Improved detergent-based recovery of polyhydroxyalkanoates (PHAs)." Biotechnology Letters 33, no. 5 (January 5, 2011): 937–42. http://dx.doi.org/10.1007/s10529-010-0513-4.

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Stephen, D. B., and G. P. Steven. "Improved stress recovery for elements at boundaries." Structural Engineering and Mechanics 5, no. 2 (March 25, 1997): 127–35. http://dx.doi.org/10.12989/sem.1997.5.2.127.

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Liu, F., and K. T. Lau. "Improved structure for efficient charge recovery logic." Electronics Letters 34, no. 18 (1998): 1731. http://dx.doi.org/10.1049/el:19981210.

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Cimolai, Mauro P., S. C. Solanki, and Neil Edmunds. "Passive Reservoir Heating for Improved Bitumen Recovery." Journal of Canadian Petroleum Technology 49, no. 11 (November 1, 2010): 30–42. http://dx.doi.org/10.2118/139772-pa.

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DeBons, F. E., and L. E. Whittington. "Improved oil recovery surfactants based on lignin." Journal of Petroleum Science and Engineering 7, no. 1-2 (April 1992): 131–38. http://dx.doi.org/10.1016/0920-4105(92)90014-r.

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Neethling, S. J., D. Mesa, and P. R. Brito-Parada. "An improved model for predicting froth recovery." Minerals Engineering 205 (January 2024): 108479. http://dx.doi.org/10.1016/j.mineng.2023.108479.

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Obeng, Abraham Kusi, Duangporn Premjet, and Siripong Premjet. "Improved glucose recovery from durian peel by alkaline-catalyzed steam pretreatment." PeerJ 9 (August 18, 2021): e12026. http://dx.doi.org/10.7717/peerj.12026.

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Durian (Durio zibethinus Murr.) peel, as agricultural waste, is a potential under-utilized lignocellulosic biomass that is sufficiently available in Thailand. In this study, durian peel from monthong (D. zibethinus Murr. cv. Monthong) and chanee (D.zibethinus Murr. cv. Chanee) were subjected to pretreatment with sodium hydroxide (NaOH) under autoclaving conditions to improve glucose recovery. The effect of NaOH concentration (1%, 2%, 3%, and 4%) and autoclave temperature (110 °C, 120 °C, and 130 °C) was investigated based on the amount of glucose recovered. The optimal NaOH concentration and autoclave temperature were determined to be 2% and 110 °C, respectively, under which maximum glucose (36% and 35% in monthong and chanee peels, respectively) was recovered. Glucose recovery was improved by about 6-fold at the optimal pretreatment condition for both pretreated monthong and chanee when compared to the untreated durian peels. Scanning electron microscopy (SEM) showed great changes to the surface morphology of pretreated durian peel from the two cultivars. X-ray diffraction (XRD) analysis also revealed a rise in cellulose crystallinity index (CrIs) after pretreatment. A combination of mild NaOH concentration and autoclaving is a very effective pretreatment technique for maximum glucose recovery from durian peel.

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de Melo, Maria, and Elizabete Lucas. "Characterization and selection of polymer for use in future research on improved oil recovery." Chemistry & Chemical Technology 2, no. 4 (December 15, 2008): 295–303. http://dx.doi.org/10.23939/chcht02.04.295.

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Polymer flooding has been applied for petroleum recovery and the main results of this method are the effective increasing in oil production and the reduction of water circulation The objective of this work is to present a methodology for pre-selecting a polymer to be used in future research on enhanced oil recovery (EOR) by injecting polymer solution. A reservoir was selected and characterized. Seven samples of commercial partially hydrolyzed polyacrylamide (PHPA) were also selected and characterized. Polymer solutions were prepared and characterized in terms of filterability, viscosity, stability (under reservoir conditions) and mechanical degradation. Polymer-reservoir interaction was also investigated. The results showed that it is very useful to establish a methodology to pre-select the more suitable polymer for fluid injection operations in oil field. Besides, for the conditions used in this study, the best polymer presents hydrolysis degree of 30%, molar mass of 5106 and intrinsic viscosity of 10 ml/g.

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Greenwood, Melody H., and W. L. Hooper. "The use of alkalinity and incubation at 9 °C for improved recovery ofYersiniaspp. from faeces." Epidemiology and Infection 101, no. 1 (August 1988): 53–58. http://dx.doi.org/10.1017/s0950268800029216.

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SUMMARYRecovery ofYersinia enterocoliticaand related strains from faecal samples enriched in 1% buffered peptone water (pH 7·2) and incubated at 4 °C for 17–21 days was compared with recovery from 1% peptone water buffered to pH 8·0 and incubation over the temperature range 4–26°C. Best recovery was obtained by use of the alkaline medium incubated at 9°C. Greatest recovery was obtained after incubation for 10–14 days, but most strains (> 75%) were recovered after 1 week.

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Stys, P. K., B. R. Ransom, and S. G. Waxman. "Tertiary and quaternary local anesthetics protect CNS white matter from anoxic injury at concentrations that do not block excitability." Journal of Neurophysiology 67, no. 1 (January 1, 1992): 236–40. http://dx.doi.org/10.1152/jn.1992.67.1.236.

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1. Anoxic injury in CNS white matter was studied using the in vitro rat optic nerve preparation. Optic nerves were subjected to 60 min of anoxia, and functional recovery was assessed using the area under the compound action potential (CAP). In normal cerebrospinal fluid, CAP area recovered to 33.5 +/- 9.3% (SD) of control. 2. Lidocaine and procaine (0.1 or 1.0 mM), applied beginning 1 h before anoxia, significantly improved postanoxic recovery of CAP area. However, both agents also depressed the preanoxic CAP. Procaine generally allowed greater recovery with less depression compared with lidocaine. 3. The quaternary derivatives QX-314 (0.1-1.0 mM) and QX-222 (0.3-3.0 mM) resulted in more complete recovery of the CAP area from anoxia, with less depression of preanoxic excitability, compared with the tertiary compounds. At 0.3 mM, QX-314 reduced the preanoxic CAP very little (to 94.4 +/- 14% of control CAP area), yet allowed the postanoxic CAP area to recover to 99.6 +/- 19%. 4. We conclude that quaternary local anesthetics are more effective at protecting CNS white matter tracts from anoxia than tertiary compounds and that these agents can result in markedly improved recovery even at concentrations that do not block conduction. Moreover, given the relative specificity of QX-314 for noninactivating Na+ channels, we hypothesize that this channel subtype plays an important role in mediating anoxic injury in central myelinated axons.

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Mourits, B. M. P., M. Z. Meulekamp, P. van der Wurff, and C. Lucas. "Identifying prognostic factors to determine the level of recovery in servicemembers with chronic low back pain: A prospective cohort study." Journal of Back and Musculoskeletal Rehabilitation 34, no. 4 (July 13, 2021): 697–705. http://dx.doi.org/10.3233/bmr-200123.

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OBJECTIVE: The main objective of this study was to identify general and military-related factors that are associated with the level of recovery in Dutch service members with chronic low back pain (CLBP) who followed a rehabilitation program. MATERIAL AND METHOD: One hundred five consecutive service members with CLBP were included in this study. The level of disability, was used to distinguish a recovered and non-recovered group. Level of pain and self-perceived recovery were used as secondary outcome measurements. Differences were evaluated within and between the groups using the Student’s t-test Bivariate logistic regression analyses were used for identifying the prognostic factors related to various outcomes of recovery RESULTS: After following the rehabilitation program, 64.8% of the service members recovered from CLBP. The recovered group, demonstrated significant effect sizes in disability and in pain The non-recovered group showed on disability a non-significant effect and in pain a significant effect. The self-perceived recovery in the recovered group was “much improved” and the non-recovered group “slightly improved”. The results of the bivariate regression analyses showed no significant independent prognostic factors related to recovery. CONCLUSIONS: In this study, no significant independent prognostic factors could be identified that were associated to the various outcomes of recovery in service members with CLBP who followed a rehabilitation program.

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Merchan-Arenas, Diego R., and Cindy Carolina Villabona-Delgado. "Chemical-Enhanced Oil Recovery Using N,N-Dimethylcyclohexylamine on a Colombian Crude Oil." International Journal of Chemical Engineering 2019 (May 2, 2019): 1–10. http://dx.doi.org/10.1155/2019/5241419.

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Oil recovery was improved using the tertiary amine, N,N-dimethylcyclohexylamine (DMCHA), a powerful and promissory switchable solvent, in simulated conditions similar to the Colombian crude oil reserves. Firstly, the Colombian crude oil (CCO) and the soil were characterized completely. Afterwards, an aged crude-rock system was obtained to use DMCHA that gave an oil crude extraction of 80% in our preliminary studies. Thus, a sand-pack column (soil-kaolin, 95 : 5) frame saturated with CCO was used to simulate the conditions, in which DMCHA could recover the oil. After the secondary recovery process, 15.4–33.8% of original oil in place (OOIP) is obtained. Following the injection of DMCHA, the recovery yield rose to 87–97% of OOIP. Finally, 54–60% of DMCHA was recovered and reinjected without affecting its potential in the simulated conditions.

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Bourne, N. K., and G. T. Gray. "Computational design of recovery experiments for ductile metals." Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 461, no. 2062 (August 31, 2005): 3297–312. http://dx.doi.org/10.1098/rspa.2005.1501.

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Previous work on the shock loading of metals, has shown that one-dimensional strain histories may be only be approximated in a loaded sample if it is to be recovered at late times to examine microstructure. This proceeds through the use of a system of partial momentum traps and soft, shock-recovery techniques. However, limitations in the degree of uniaxial loading, and on the trapping of tensile pulses, have led to redesign of the target. In the current paper the technique is first assessed, and then modifications are explored to further refine it. Additionally it is illustrated how it may be applied to successfully recover targets of lower innate fracture toughness than has been previously documented. In the first part of the paper, the authors review work undergone to shock recover metals, and highlight associated constraints. In the latter part of the paper, a series of hydrocode simulations is presented to illustrate the design of an improved shock recovery technique that has now been adopted.

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Yang, Qining. "Design and Thermodynamic Analysis of Waste Heat Recovery System of Sludge Hydrothermal Carbonization." Highlights in Science, Engineering and Technology 73 (November 29, 2023): 580–85. http://dx.doi.org/10.54097/hset.v73i.14681.

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This paper proposes a new type of sludge hydrothermal carbonization waste heat recovery system, which transfers the heat in the sludge hydrothermal carbonization to the combustion air of the boiler through total heat exchange to achieve waste heat recovery. The waste heat recovery system makes full use of the heat in the steam and improves the calorific value of the sludge entering the incinerator. With the increase of combustible matter content in sludge, the exergy efficiency of waste heat recovery system increases. Due to the improved steam quality and the use of small turbines to do work, the operating economy is improved.

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Fraser, MS, Ryan S., Tim Frazier, PhD, Tim Manning, MS, and Erik Wood, MS. "Disaster recovery funding: Enhanced understanding for improved outcomes." Journal of Emergency Management 20, no. 8 (July 25, 2022): 23–37. http://dx.doi.org/10.5055/jem.0679.

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The complexities of post-disaster recovery funding present significant challenges to state and local communities, particularly with the increase in frequency and intensity of disasters triggered by climate change. This paper explores the disaster recovery funding process for which there is limited existing research. A concurrent triangulation method was utilized as the strategy of inquiry. This mixed methods approach consisted of a content review of the related literature, an analysis of the New Jersey (NJ) Transit damage from Hurricane Sandy, a case study examining NJ Transit’s unmet recovery need, and semistructured interviews with related officials. Findings suggest that improved interagency communication is required to better understand funding limitations and develop formal procedures for recovery. Despite progress, extensive gaps in disaster recovery funding remain. The analysis resulted in three key post-disaster recovery coordination findings: (1) there remains a lack of compatibility among the different federal grant programs; (2) there is an identified need for a single point of coordination to enhance the communication process; (3) a solution to recovery funding should include insurance and the private sector. Enhanced coordination mechanisms will result in improved outcomes for jurisdictions recovering from the overwhelming and cascading effects of disasters. These findings have both national and international implications.

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Nuñez Dorantes, Juan Carlos, ALBINO MARTINEZ SIBAJA, JOSE PASTOR RODRIGUEZ JARQUIN, and JESUS AGUAYO ALQUICIRA. "COMPARISON OF ENERGY RECOVERY IN THE REGENERATIVE BRAKING SYSTEM IN AN ELECTRIC VEHICLE USING MOSFET'S AND THE IRAMY INVERTER MODULE." DYNA 97, no. 6 (November 1, 2022): 625–30. http://dx.doi.org/10.6036/10668.

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Currently there is an increase in the demand for electric vehicles that require greater autonomy for driving. The use of suitable devices for energy recovery is crucial to guarantee the autonomy of electric vehicles (EV). In this paper, regenerative braking is used as an energy recovery strategy in an electric vehicle that uses a BLDC motor and a three-phase inverter for control it. The comparison of the inverter was made using SIHP22N60AE-BE3 MOSFET's and the IRAMY20UP60B module that uses IGBT's (with similar characteristics) The experimental results confirm that the module IRAMY recovers slightly more energy than MOSFET's. Therefore, it is determined that using the IRAMY module improves the amount of energy recovered after a braking situation for a braking cycle of 1s, with a duty cycle of 40%, a braking torque of 30Nm and 78RPM, and, although, the amount of energy recovered is not significant between these devices, for braking situations with higher torque, and in longer periods of braking, the autonomy of the EV is improved. For this work, the tests performed on the EV were done with no mechanical load.

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H, Ouadi. "Applications of Underbalanced Fishbone Drilling for Improved Recovery and Reduced Carbon Footprint in Unconventional Plays." Petroleum & Petrochemical Engineering Journal 7, no. 1 (January 11, 2023): 1–22. http://dx.doi.org/10.23880/ppej-16000331.

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Fishbone Drilling (FbD) consists of drilling several micro-holes in different directions from the main vertical or deviated wellbore. Similar to multilateral micro-hole drilling, FbD may be used to enhance hydrocarbon production in naturally fractured formations or in refracturing operations by interconnecting the existing natural fractures. When combined with underbalanced drilling using a coiled tubing rig, FbD enhances the production further by easing the natural flow of the hydrocarbon from the reservoir to the wellbore. The design aspects of the Fishbones include determining the number, length, distance between the branches, and the angle of sidetracking of the branches from the main borehole. In addition, the design of efficient drill string components to suit the FbD conditions are another important design aspect in FbD technology development. Examples of this include a high-performance small, diameter downhole motor and the use of High Voltage Pulsed Discharge (HVPD) plasma shock waves at different pulse frequencies and wave pressures to impose shear forces on the formation to break it more easily. This paper will present a comprehensive review of the FbD technology, including some of its current applications and design aspects. The possibility of using FbD in conjunction with hydraulic fracturing to boost production by creating a network of connected fractures will be discussed, and some of its technical and economic benefits and challenges will be compared

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Morgan, Ashley G., and Mechthild Prinz. "Development of Improved DNA Collection and Extraction Methods for Handled Documents." Genes 14, no. 3 (March 21, 2023): 761. http://dx.doi.org/10.3390/genes14030761.

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Handwritten documents may contain probative DNA, but most crime laboratories do not process this evidence. DNA recovery should not impair other evidence processing such as latent prints or indented writing. In this study, single fingermarks on paper were sampled with flocked swabs, cutting, and dry vacuuming. In addition, two extraction methods were compared for the sample type. DNA yields were low across all methods; however, this work confirms the ability to recover DNA from paper and the usefulness of the vacuum sampling method combined with the Chelex-Tween method. Stability of touch DNA deposits were compared over an 11-month period to better understand degradation that may occur over time. No significant difference in DNA recovery was observed, suggesting DNA deposits on paper are stable over an 11-month span.

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Denney, Dennis. "Improved-Recovery Processes and Effective Reservoir Management Maximize Oil Recovery at Salt Creek." Journal of Petroleum Technology 55, no. 12 (December 1, 2003): 42–58. http://dx.doi.org/10.2118/1203-0042-jpt.

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Dardis, Kevin A. "The Design and Operation of Heavy Medium Recovery Circuits for Improved Medium Recovery." Coal Preparation 7, no. 3-4 (January 1989): 119–57. http://dx.doi.org/10.1080/15455838909407962.

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Sandoval Martinez, Maria Isabel, and Samuel Fernando Muñoz Navarro. "Laboratory study of cyclic liquid solvent injection process for heavy oil recovery through computed tomography." DYNA 86, no. 210 (July 1, 2019): 81–90. http://dx.doi.org/10.15446/dyna.v86n210.74983.

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The cyclic solvents injection has been considered for years as an improved non-thermal enhanced oil recovery method for the recovery of heavy oil, which includes three stages: injection, soaking, and production. This paper describes a laboratory study with Computed Tomography and Nuclear Magnetic Resonance of a cyclic solvent injection process in a porous medium, using naphtha as a liquid diluent to recover a Colombian heavy oil in a porous medium at 84 °C. The core was scanned during the soaking time to determine the expansion behavior of the mixing zone by analyzing the density profiles obtained after each scan. It was also scanned after the production stage to observe the distribution of saturation in the porous medium after each cycle. Finally, the fluids recovered from porous medium were taken to a nuclear magnetic resonance equipment to determine the recovery factor.

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Journal articles on the topic 'Improved recovery'

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