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This study presents a comprehensive review of enhanced oil recovery (EOR) methods tailored specifically for high permeable heavy oil/bitumen (HOB) reservoirs, encompassing reservoir properties, production techniques, and associated challenges. In contrast to existing literature, this research uses a novel approach by delving into the production history and methodologies employed in prominent HOB-producing countries.As a result, some comprehensive primary reservoir threshold criteria are created via coupling the presented information in various literatures. Also, the analysis reveals diverse global strategies for HOB production. Canada's majority of HOB reservoirs, with average gravity less than 11 API, employ surface mining and cold production with sand. Russia's higher gravity HOB reservoirs face challenges with combustion methods. Venezuela emphasizes multilateral horizontal wells and EOR methods like down-hole electrical heaters, surfactant injection and thermal methods. In the USA, a novel downhole steam generation method shows promise. Argentina focuses on Centenario formation production with steam injection and polymer/gel treatment after water flooding, while China utilizes cyclic steam stimulation (CSS), Fire flooding and integrated technologies after water flooding. Oman's Marmul field uses polymer and alkaline-surfactant-polymer flooding for water-cut reduction while Sudan employs infill horizontal wells, deeper re-completion, cement squeezing, partially perforating for the same purpose. As a final conclusion, surface mining is prevalent for low-depth bitumen reservoirs, whereas cold methods are preferred during the early stages of heavy oil production. Furthermore, among the EOR methods, CSS has the biggest share in oil production specially in Colombia (Middle Magdalena basin), Canada (Athabasca field) and China.These findings underscore the importance of tailoring extraction methods to the unique characteristics of each HOB reservoir for optimal production efficiency. By leveraging insights from global production histories and innovative techniques, substantial improvements in oil recovery and operational efficiency can be achieved, paving the way for sustainable utilization of this vital energy resource.

Copyright of Journal of Harbin Institute of Technology. Social Sciences Edition / Haerbin Gongye Daxue Xuebao. Shehui Kexue Ban is the property of Harbin Institute of Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Time series data sensed by underwater wireless sensor networks (UWSNs) play a crucial role in prediction and decision-making in marine applications. Unfortunately, equipment and environmental precision and interference problems in UWSNs may lead to a large amount of missing data in a specific time period. In this work, we propose a multi-head attention-based sequence-to-sequence model (MSSM) for reconstructing continuous missing data. It can reduce the negative impact of missing data due to the harsh underwater communication environment. MSSM has a dual encoder architecture that can process known data on both sides of missing values. Multi-head self-attention mechanism and bidirectional gate recurrent unit (Bi-GRU) can thoroughly learn the temporal patterns and the inter-sequence dependencies; moreover, soft thresholding can also reduce noise interference. Datasets are used to test the performance, and experimental results show that metrics are lower than other relevant alternatives, demonstrating that MSSM is an effective model with solid generalization ability. [ABSTRACT FROM AUTHOR]

Copyright of Cotton Textile Technology is the property of Cotton Textile Technology Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Spent lead–acid batteries have become the primary raw material for global lead production. In the current lead refining process, the tin oxidizes to slag, making its recovery problematic and expensive. This paper aims to present an innovative method for the fire refining of lead, which enables the retention of tin contained in lead from recycled lead–acid batteries. The proposed method uses aluminium scrap to remove impurities from the lead, virtually leaving all of the tin in it. The results of the conducted experiments indicate the high efficiency of the proposed method, which obtained a pure Pb-Sn alloy. This alloy is an ideal base material for the production of battery grids. This research was carried out on an industrial scale, which confirms the possibility of facile implementation of the method in almost every lead–acid battery recycling plant in the world. [ABSTRACT FROM AUTHOR]

This study presents a comprehensive review of enhanced oil recovery (EOR) methods tailored specifically for high permeable heavy oil/bitumen (HOB) reservoirs, encompassing reservoir properties, production techniques, and associated challenges. In contrast to existing literature, this research uses a novel approach by delving into the production history and methodologies employed in prominent HOB-producing countries. As a result, some comprehensive primary reservoir threshold criteria are created via coupling the presented information in various literatures. Also, the analysis reveals diverse global strategies for HOB production. Canada's majority of HOB reservoirs, with average gravity less than 11 API, employ surface mining and cold production with sand. Russia's higher gravity HOB reservoirs face challenges with combustion methods. Venezuela emphasizes multilateral horizontal wells and EOR methods like down-hole electrical heaters, surfactant injection and thermal methods. In the USA, a novel downhole steam generation method shows promise. Argentina focuses on Centenario formation production with steam injection and polymer/gel treatment after water flooding, while China utilizes cyclic steam stimulation (CSS), Fire flooding and integrated technologies after water flooding. Oman's Marmul field uses polymer and alkaline-surfactant-polymer flooding for water-cut reduction while Sudan employs infill horizontal wells, deeper re-completion, cement squeezing, partially perforating for the same purpose. As a final conclusion, surface mining is prevalent for low-depth bitumen reservoirs, whereas cold methods are preferred during the early stages of heavy oil production. Furthermore, among the EOR methods, CSS has the biggest share in oil production specially in Colombia (Middle Magdalena basin), Canada (Athabasca field) and China. These findings underscore the importance of tailoring extraction methods to the unique characteristics of each HOB reservoir for optimal production efficiency. By leveraging insights from global production histories and innovative techniques, substantial improvements in oil recovery and operational efficiency can be achieved, paving the way for sustainable utilization of this vital energy resource., Competing Interests: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (© 2024 Published by Elsevier Ltd.)

Spent lead–acid batteries have become the primary raw material for global lead production. In the current lead refining process, the tin oxidizes to slag, making its recovery problematic and expensive. This paper aims to present an innovative method for the fire refining of lead, which enables the retention of tin contained in lead from recycled lead–acid batteries. The proposed method uses aluminium scrap to remove impurities from the lead, virtually leaving all of the tin in it. The results of the conducted experiments indicate the high efficiency of the proposed method, which obtained a pure Pb-Sn alloy. This alloy is an ideal base material for the production of battery grids. This research was carried out on an industrial scale, which confirms the possibility of facile implementation of the method in almost every lead–acid battery recycling plant in the world.

PURPOSE The purpose of this study was to induce sufficient fatigue through the Jiu-Jitsu game imitation exhaustion treatment that reflects the characteristics of Jiu-Jitsu competition, and then fatigue-related indicators according to the self-healing treatment method performed during the break between each treatment and to examine the effect on Jiu-Jitsu exercise performance. METHODS Eight Jiu-Jitsu athletes (28.3±3.62 years, 24.6±2.5 kg/m2, 14.6±4.6% fat) participated in the study, and their exercise performance, RPE, lactate, CK, and CRP were measured after inducing exhaustion using the Jiu-Jitsu Fight Gone Bad (JFGB; 4 rounds×6 minutes JFGB, 12 minutes of recovery between rounds) test. These variables analyzed using two-way ANOVA with bonferroni’s correction. RESULTS All the exercise performance, lactate level, and RPE showed only the difference over time according to JFGB treatment, and there was no significant difference according to recovery methods (passive recovery; PR, active recovery; AR, cryotherapy; CTR, oxygen inhalation; OIR). On the other hand, in the case of CRP, there was no significant difference in interaction effect, group, and time main effects. CK showed a significant difference only before and after JFGB treatment, but similarly, there was no difference according to recovery methods. CONCLUSIONS Regardless of the recovery method, all variables showed a significant difference only over time according to the JFGB test, and the AR, CTR, and OIR methods were similar to the PR. However, it was observed that in the case of CK, immediately after the JFGB test, it increased significantly regardless of recovery measures.

During the load operation of a high-voltage direct-current (HVDC) cable, the compound insulation between the cable insulation and accessory insulation is subjected to direct-current stress and temperature gradient (TG) field, which easily results in the accumulation of space charge and interface charge. In this study, a laminate composed of cross-linked polyethylene (XLPE) and silicon rubber (SR) is selected as the test sample. The signals characterizing the space charge profile in bi-layer dielectrics under different TGs are measured by the pulsed electroacoustic (PEA) method. First, the effects of the TG on the acoustic velocities and the attenuation and dispersion characteristics in the bi-layer dielectrics are systematically discussed. It is indicated that the increase in the TG exacerbates the attenuation and dispersion characteristics in the dielectric near the low-temperature side but lessens that in the dielectric near the high-temperature side. In addition, the effect of the TG on the attenuation is more obvious than that on the dispersion. Then, based on the mechanism of the generation and propagation of pressure waves in bi-layer dielectrics using the PEA method, a recovery method for the space charge waveforms in bi-layer dielectrics under TG is proposed, in which the transfer function is improved by combining the acoustic velocity gradient and the effects of the TG on the attenuation and dispersion characteristics. Moreover, the voltage-charge calibration coefficients in bi-layer dielectrics under TG are improved. Via the proposed method, the distortions of the measured waveforms can be recovered effectively. [ABSTRACT FROM AUTHOR]

In this study, two epididymal spermatozoa recovery methods in relation to sperm number, motility, viability and acrosome reaction were examined. Seven bulls were castrated and 7 testicles with epididymides were transferred to the laboratoy. Epididymis in each bull was randomly used for flushing and mincing methods with semen extender (Optixcell, IMV, France). The recovered spermatozoa with adjusted sperm concentration to 40 × 106 cells/mL was diluted with optixcell and cryopreserved. In experiment 1, the difference in the total number of spermatozoa using flushing and mincing methods was insignificant (2570.0 and 2505.2 × 106 cells/mL, respectively). For experiment 2, the percentage of motile spermatozoa and motility parameters between flushing and mincing methods were studied through the use of sperm class analyzer after frozen-thawing. The percentage of total motile sperm between flushing and mincing methods was almost the same with 89.5±12.8 and 91.4±7.9%, respectively. The same is the case with experiment 3 wherein the viability and acrosomal integrity of frozen-thawed epididymal spermatozoa by flushing and mincing was insignificantly different. The results from the study showed that both flushing and mincing methods can be used for epididymal spermatozoa recovery in bull.

The synchronised phasor measurement units (PMUs), serving as 'GridEye', provide data that improve the observability and controllability of the power grid due to its high accuracy and high‐upload rate. However, missing or abnormal data may seriously affect its applications. This study proposes a method to recover the missing or abnormal amplitude data in PMU measurements (i.e. the active power, reactive power, positive sequence current, and voltage amplitude), based on the historical PMU data obtained from both ends of the line, which is independent of the transmission line parameters and the phase angle that may be influenced by synchronisation. First, the issues in the quality of measured PMU data are analysed, and the motivation of the proposed method is stated. Then, a method to screen out the bad data from the historical data is proposed based on the density‐based spatial clustering of applications with noise. Furthermore, the model of data recovery is established, and the recovery method, which recovers the voltage amplitude, active power, reactive power, and current amplitude in sequence, using historical amplitude data to calculate related recovery coefficients is proposed. Finally, the effectiveness and practicability of the proposed method are verified by examples of simulation and measured data. [ABSTRACT FROM AUTHOR]

Open-circuit chambers have been widely applied to gas exchange measurement for indirect calorimetry and greenhouse gas emission. The reliability of these systems is crucial and is commonly evaluated through recovery tests. These tests simulate gas exchanges of animals through the injection or consumption of known quantities of gases, while monitoring the gas flux with the measurement system, and then comparing the difference between the known mass and the measured mass to assess the system integrity. Although the recovery test approach is widely accepted, the method of how to choose recovery tests has rarely been documented, and no single source has been found that summarizes a complete process for evaluating a system and correcting post-evaluation systematic errors. In this study, three recovery methods were applied: (1) the alcohol combustion method (ACM) burns a known amount of pure ethanol to simulate both consumption (O2) and production (CO2); (2) the gravimetric gas injection method (GRAV) directly measures the weight change of a compressed CO2 gas cylinder during the injection process; and (3) the constant gas injection method (CGIM) steadily injects sulfur hexafluoride (SF6) gas into the chamber. An experiment was conducted that included eight repeated trials for each of the three methods in six identical chambers (144 total tests) of the Ruminant Emission Measurement System (REMS) at the Beef Cattle and Sheep Field Laboratory at the University of Illinois in Urbana-Champaign. The recovery percentages of the respiratory quotient for the six ACM chambers varied from 72.58% to 77.76%, indicating that measurement and calculation errors occurred in the system. The CGIM and GRAV methods were used for identifying the errors from ventilation measurement and calculation of exhaust airflow rate. Correction factors were generated from the results and proved effective, as recovery percentages were improved to an acceptable level (100%.5%) for all chambers. This approach can be applied to other studies and other systems to assist in selecting appropriate integrity tests and applying correction methods. [ABSTRACT FROM AUTHOR]

The recovery of good quality oocytes is essential for the success of various reproductive biotechniques. The aim of this study was to determine the effect of two techniques on the recovery of good quality oocytes in queens and bitches at different reproductive stages. A total of 43 pairs of ovaries of queens and 35 of bitches after elective ovariosalpingohisterectomy were performed. The estrous cycle phase was classified as inactive, follicular or luteal. The ovaries of the follicular phase were allocated into three groups: PUN) puncture of the follicles with a needle; PUN + SLI) slicing of the same ovary already punctured; and SLI) slicing of the second ovary. The ovaries of luteal and inactive females were submitted to SLI. A total of 974 oocytes (~23/animal) were obtained in feline females and 940 (~27/animal) in canines females. The SLI technique recovered superior number (P<0.05) of oocytes. There was no difference (P>0.05) between the collection techniques in the quality of recovered structures. The number of oocytes recovered in each phase was similar (P>0.05). However, the inactive phase was higher than luteal (P<0.05) and similar to the follicular phase in the quantity of good-quality oocytes in queens and there was no difference in bitches. In conclusion, it is preferable to perform the slicing technique to recover more oocytes in both species. Moreover, in queens it is possible to obtain good quality oocytes in the inactive phase and in bitches the estrous cycle phase does not influence the quality. [ABSTRACT FROM AUTHOR]

Abstract Growing demand for fresh, unprocessed food favours the emergence of Cryptosporidium infections in humans. Mainly it is food of plant origin or unpasteurized milk which have been involved in food-borne outbreaks of cryptosporidiosis. So far consumption of shellfish contaminated with Cryptosporidium were not associated with human infections although such as possibility exists. In this study an attempt was undertaken to evaluate the analytical performance of three commonly used methods for recovery of Cryptosporidium oocysts from shellfish: i) pepsin digestion of shellfish in conjunction with immunomagnetic separation (IMS) of oocysts (method A), ii) pepsin-HCl treatment of shellfish homogenate without IMS (method B), and iii) a strainer method with direct oocyst extraction and separation from shellfish tissue using IMS (method C). Each method's performance was assessed according to the ISO standard requirements by testing shellfish homogenates seeded with different numbers of C. parvum oocysts. Two groups of parameters were compared, encompassing precision (coefficient of variation (CV)) and accuracy of measurements. These were described by linear regression models allowing calculation of the methods' limits of detection (LOD) and quantification (LOQ). In addition, oocyst recovery efficiencies from shellfish were calculated for each method. All three compared methods allowed for at least 66% recovery of Cryptosporidium oocysts from the tested samples. The best recovery (83.3–100%) in the whole range of tested suspensions was obtained for method C. The accuracy of method B was better (linearity of r2 = 0.9996 in the full measurement range) than that of method A (r2 = 0.968). Method C showed the best accuracy (r2 = 1) and precision (CV 0.2–14.1). Compared to other methods it was also characterised by the best LOD and LOQ, attaining ≅4 and ≅12 oocysts per 3 g of tested shellfish sample respectively. Despite a lack of the ability of method A to give the proportional results in oocysts recovery (non-linearity of the method) compared to the reference values, it achieved the highest LOD and LOQ values among the tested methods. As demonstrated here, the most efficient method for extraction of Cryptosporidium oocysts from shellfish tissues was method C employing sample homogenisation and separation of oocysts from tissue debris using IMS. Used alone this method does not in fact allow for identification of Cryptosporidium species but delivers quantitative results concerning the level of food contamination by parasites. Highlights • Cryptosporidium recovery methods have proven their usefulness in food diagnostics. • Method employing sample homogenisation and IMS showed the best analytical performance. • Compared methods were characterised by different parameters of precision and accuracy. [ABSTRACT FROM AUTHOR]

At present, ScanDisk is used to recover the data lost in network communication. But this method is limited in scope, and once the lost data is covered, it's difficult or impossible to recover it, which results in low recovery degree. Accordingly, a recovery method for lost data in network communication based on RAID6 is proposed. Firstly, according to the mechanism of data loss in network communication, the missing data is divided into three categories: random loss, completely random loss and nonrandom loss, and then according to the results of classification, the recovery problem of the data loss in network communication is converted into the problem of matrix completion, finally, a low-rank decomposition model is proposed, according to the low rank characteristics of the matrix, the lost data in the matrix is recovered, thus the recovery of the lost data in network communication is finished. Experimental results show that the proposed method can easily recover the lost data in network communication with a simple operation, low computing complexity and strong applicability, and can be used as a universal recovery method for data lost in network communication. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Food Safety & Quality is the property of Journal of Food Safety & Quality Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The recovery of Mycobacterium avium subspecies paratuberculosis (Map) from the environment can be a laborious process – owing to Map being fastidious, its low number, and also high numbers of other microbial populations in such settings. Protocols i.e. filtration, decontamination and modified elution were devised to recover Map from spiked water sediments. Three culture media: Herrold's Egg Yolk Media (HEYM), Middlebrook 7H10 (M-7H10) and Bactec 12B were then employed to grow the organism following its elution. In the sterile sediment samples the recovery of Map was significant between the time of exposure for each of HEYM and M-7H10, and insignificant between both media (P < 0.05). However, in the non-sterile sediment samples, the HEYM grew other background microflora including moulds at all the times of exposure whilst 4 h followed by M-7H10 culture yielded Map colonies without any background microflora. Using sterile samples only for the Bactec 12B, the recovery of Map decreased as time of exposure increased. Based on these findings, M-7H10 should be considered for the recovery of Map from the natural environment including water sediments where the recovery of diverse microbial species remains a challenge. Significance of the study Map is a robust pathogen that abides in the environment. In water treatment operations, Map associates with floccules and other particulate matter including sediments. It is also a fastidious organism, and its detection and recovery from the water environment is a laborious process and can be misleading within the abundance of other mycobacterial species owing to their close resemblance in phylogenetic traits. In the absence of a reliable recovery method, Map continues to pose public health risks through biofilm in household water tanks, hence the need for the development of a reliable recovery protocol to monitor the presence of Map in water systems in order to curtail its public health risks. [ABSTRACT FROM AUTHOR]

In this paper, a new onboard energy storage system (ESS) is designed. In addition, the experiment system is developed for the energy recovery of the metro vehicle braking. The proposed ESS is not connected to the DC bus, but to the brake chopper in the inverter. The ESS has a simple structure and high reliability due to its independence from the metro vehicle traction system, and it does not feedback the energy to the traction system. The mathematical model of traction dynamics was studied. A scaled experiment system is developed to simulate metro vehicle traction conditions and to test the characteristics of the ESS. The whole experiment system is modeled and simulated in the Matlab/Simulink software. The experiment results show that the highest recovery efficiency of the system is 84.6%. Both the simulation and the experiment results confirm the validity and the feasibility of the proposed ESS. [ABSTRACT FROM AUTHOR]