Статті в журналах: "Durability recovery"

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Barbakadze, Khatuna, Witold Brostow, Nathalie Hnatchuk, Giorgi Lekishvili, Badri Arziani, Krzysztof Zagórski, and Nodar Lekishvili. "Antibiocorrosive Hybrid Materials with High Durability." Chemistry & Chemical Technology 15, no. 4 (November 25, 2021): 500–511. http://dx.doi.org/10.23939/chcht15.04.500.

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We have developed novel antibiocorrosive multifunctional hybrid materials based on functionalizedperfluoroalkylmethacrylate copolymerswith epoxy groups in main chainsand selected biologically active compounds.The hybrids are transparent, showgood adhesion to various surfaces (plastic, wood),high viscoelastic recovery in scratch testing,low wear rates and glass transitions above 323 K. No phase separation is seen in scanning electron micrography. Enhanced mechanical strength and good abrasion resistance are advantages for uses of our protective and antibiocorrosive coatings in various applications including protection of cultural heritage.

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Gupta, Shravan Kumar, Kamal Kanti Goswami, and Abhijit Majumdar. "Optimization of durability of Persian hand-knotted wool carpets by using desirability functions." Textile Research Journal 88, no. 1 (November 13, 2016): 89–98. http://dx.doi.org/10.1177/0040517516676056.

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Lower abrasion loss and compression, as well as higher compression recovery, are desirable for obtaining maximum carpet durability. Hand-made carpet manufacturers need to satisfy consumers on these diverse durability requirements. Therefore, it is necessary to optimize the carpet durability by considering several objectives simultaneously. In this investigation, carpet durability has been optimized by considering abrasion loss, compression and compression recovery simultaneously. The desirability function approach has been used to combine multiple objectives into a single objective. Knot density, pile height, number of plies in the pile yarn and pile yarn twist have been considered as the four independent variables. The optimum desirability of carpet durability was found to be 0.8. The validation sample also showed good agreement (error < 5%) with the optimized values of carpet durability attributes.

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Yefanov, S. A., A. V. Kotin, and V. Yu Fedchenko. "Recovery of spindle units by polymer composites." Traktory i sel hozmashiny 79, no. 10 (October 15, 2012): 50–52. http://dx.doi.org/10.17816/0321-4443-66020.

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Ko, Jun-Bok, Young-Hoon Lim, and Dong-Cheol Lee. "Analysis of Durability of Torsion Beam Axle Using Modal Stress Recovery Method." Transactions of the Korean Society of Mechanical Engineers A 34, no. 10 (October 1, 2010): 1339–44. http://dx.doi.org/10.3795/ksme-a.2010.34.10.1339.

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Pearson, M., and R. W. Anderson. "Reliability and durability from large heat recovery steam generators." Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy 213, no. 3 (May 1999): 151–68. http://dx.doi.org/10.1243/0957650991537518.

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Magalhaes, Arlino, Jose Maria Monteiro, and Angelo Brayner. "Main Memory Database Recovery." ACM Computing Surveys 54, no. 2 (April 2021): 1–36. http://dx.doi.org/10.1145/3442197.

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Many of today’s applications need massive real-time data processing. In-memory database systems have become a good alternative for these requirements. These systems maintain the primary copy of the database in the main memory to achieve high throughput rates and low latency. However, a database in RAM is more vulnerable to failures than in traditional disk-oriented databases because of the memory volatility. DBMSs implement recovery activities (logging, checkpoint, and restart) for recovery proposes. Although the recovery component looks similar in disk- and memory-oriented systems, these systems differ dramatically in the way they implement their architectural components, such as data storage, indexing, concurrency control, query processing, durability, and recovery. This survey aims to provide a thorough review of in-memory database recovery techniques. To achieve this goal, we reviewed the main concepts of database recovery and architectural choices to implement an in-memory database system. Only then, we present the techniques to recover in-memory databases and discuss the recovery strategies of a representative sample of modern in-memory databases.

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Ragni, Margaret V., Lynn M. Malec, and Janna M. Journeycake. "Durability of ITI Utilizing Rfviiifc." Blood 128, no. 22 (December 2, 2016): 3793. http://dx.doi.org/10.1182/blood.v128.22.3793.3793.

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Introduction: The eradication of inhibitors using immune tolerance induction (ITI) remains the mainstay of therapy in patients with severe hemophilia A who develop inhibitors. The long-acting recombinant factor VIII Fc fusion protein, rFVIIIFc (Eloctate™), which is safe and effective in the prevention and treatment of bleeding events, may promote tolerance to FVIII as shown in preclinical animal models and an inhibitor prone child, as Fc suppresses immunoregulatory Tcells to proteins to which Fc is attached. We therefore previously hypothesized rFVIIIFc would provide effective ITI, specifically shortening and simplifying ITI, and have previously described successful inhibitor eradication in three patients. Long-term follow-up data after successful ITI in patients with severe hemophilia remains limited. In the International Immune Tolerance Induction study, at 1-year follow-up, 6 of 66 subjects who had achieved tolerance demonstrated evidence of relapse at a median of 9.5 months. Of these 6 subjects, 1 had a measurable inhibitor titer and 5 had reduced FVIII recovery. We aim to provide follow-up data on our cohort of patients who had successful inhibitor eradication utilizing rFVIIIFc for ITI. Methods: Immune tolerance induction was initiated in three patients with severe hemophilia A and anti-VIII >5 B.U., in two as initial ITI (Pt. 1, 3), and one as salvage (Pt. 2) after failing to achieve ITI with standard rFVIII due to poor compliance. Follow-up was scheduled every 6-8 weeks, with planned determination of FVIII half-life once the anti-FVIII fell to <0.6 B.U. Tolerance was a priori defined as achieving anti-FVIII <0.6 B.U., FVIII recovery of at least 60%, and half-life (t½) >6 hours. Once a t½ >6 hours was documented, incremental reduction to rFVIIIFc occurred. Patients continued to be followed by their local HTC as per standard of care. Results: ITI was initiated with rFVIIIFc at a dose of 100-200 IU/kg rFVIIIFc every other day or three times weekly per MD discretion. The time to initial anti-FVIII <0.6 B.U. was 4-12 weeks. Patient 1 and 2 were able to achieve tolerance, with a FVIII recovery of at least 60%, and half-life (t½) >6 hours, at weeks 18 and 17, respectively, after initiation of ITI. Patient 3 has improved but is not yet fully tolerized, as evidenced by 57% recovery and a t½ of approximately 7 hours. Anti-VIII inhibitor titers remain negative at 15, 16 and 15 months, from the initiation of ITI in patients 1, 2, and 3 respectively. Patients 1 and 2 have been able to decrease their post ITI prophylaxis dosing regimen to 80 IU/kg and 65 IU/kg three times a week while maintaining a FVIII trough of >1%. No patients were maintained on bypassing prophylaxis during ITI and no patients have experienced hemarthroses or other major bleeding event since the initiation of ITI. Discussion: Immune tolerance induction was successful in three children with inhibitors using rFVIIIFc, including a child previously failing rFVIII ITI. The time to anti-FVIII=0 was 4-12 weeks, significantly shorter than with current rFVIII ITI. At a mean duration of follow up of 15.3 months, all patients achieved an anti-VIII inhibitor titer of 0 B.U. Repeat pharmacokinetics studies will be available at planned subsequent follow-up visit. To date, these data indicate that rFVIIIFc safely and effectively induced immune tolerance to FVIII in three children with inhibitors, and has provided durable and continuing immune tolerance to FVIII. Whether rFVIIIFc ITI will be successful and durable in a larger cohort of children with severe hemophilia A will require prospective studies. A prospective observational study of rFVIIIFc ITI pre- and post-ITI T cell responses in children with hemophilia and inhibitors, the Hemophilia Inhibitor Response to Eloctate (HIRE) Study, has begun recruitment. Disclosures Ragni: SPARK: Research Funding; Shire: Consultancy; Novo Nordisk: Research Funding; Genentech: Research Funding; CSL Behring: Research Funding; Biomarin: Consultancy; Biogen: Consultancy, Research Funding; Baxalta: Research Funding; Alnylam Pharmaceuticals: Consultancy, Research Funding; Tacere Benitec: Consultancy; Vascular Medicine Institute: Research Funding; OPKO: Research Funding. Malec:Vascular Medicine Institute: Research Funding; Biogen: Research Funding; Baxalta: Research Funding; Biogen: Consultancy. Journeycake:CSL: Consultancy; Biogen: Consultancy; Baxalta/Shire: Consultancy.

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Alege, Femi P., Gilbert J. Miito, Lisa W. DeVetter, Haiying Tao, and Pius M. Ndegwa. "Effects of Blending Dairy Manure Compost and Canola Meal on Pellet Quality and Nutrient Concentrations." Transactions of the ASABE 64, no. 2 (2021): 353–63. http://dx.doi.org/10.13031/trans.14057.

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HighlightsNutrient contents and unit density were positively correlated with canola meal blending ratio.Pellet durability, bulk density, and length were inversely correlated with canola meal blending ratio.Pellets produced from compost and 20% canola meal blend were 67% denser than the compost.Pelleting dairy manure and canola meal blends improved nutrient transport and storage.Abstract. The potential for adverse environmental impacts from excess manure nutrients generated in regions with large concentrations of animal production is enormous and real. The goal of this research was to investigate ways of alleviating such threats via pelleting and blending of excess dairy manure nutrients to enhance their value, utilization, transport, and storage. In this study, composted dairy manure was blended with canola meal in ratios ranging from 0% to 40% canola meal prior to pelleting. The pre-pelleting moisture content was set at 21% (wet basis) and an 8 mm diameter die was selected for pelleting, based on previous studies. The effect of canola blending ratio was evaluated against moisture content, unit and bulk densities, recovery, durability, and nutrient concentrations (total nitrogen and phosphate) of the resulting pellets. Results indicated positive correlations between the blending ratio and pellet recovery (r = 0.83), moisture content (r = 0.75), unit density (r = 0.74), total nitrogen (r = 0.99), and phosphate (r = 0.87). In contrast, inverse correlations were observed between the blending ratio and pellet durability (r = -0.93), bulk density (r = -0.99), and length (r = -0.76). No significant differences were observed between the blending ratio and all these parameters for blending ratios of 0% to 15%. However, data indicated significant differences between pellet durability and recovery at blending ratios above 20%. Overall, this study showed that blending dairy manure with up to 15% canola meal significantly (p < 001) improved the nutrient value, storage, and transport. Keywords: Blending, Dairy manure, Durability, Environmental pollution, Pelleting.

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Makhunton, Suphalak, Songkoon Chantachon, and Phanat Phothibat. "Integration of the Local Wisdom of Natural-Dyed Mud-Treated Silk in Thailand for Creative Economy." Advanced Materials Research 860-863 (December 2013): 2695–99. http://dx.doi.org/10.4028/www.scientific.net/amr.860-863.2695.

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The present research compared minerals contained in mud from different sites. These were analyzed by atomic absorption spectroscopy: AAS. It found the highest quantity is iron, zinc in second, lead in third, copper in fourth. The study results show that silk threads with and without mud treatment were not so different in color durability towards light, color durability towards scrubbing, and color durability towards washing. We also found that crease recovery capacity of mud-treated silk cloth was better than that of silk cloth without mud treatment. Hence, the mud treated silk is more suitable for the development of Thai garment.

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Kim, Hyunjin, Ji Eun Song, and Hye Rim Kim. "Comparative study on the physical entrapment of soy and mushroom proteins on the durability of bacterial cellulose bio‐leather." Cellulose 28, no. 5 (February 7, 2021): 3183–200. http://dx.doi.org/10.1007/s10570-021-03705-0.

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AbstractThis study aimed to develop eco-friendly bacterial cellulose (BC) bio-leather with improved durability using plant-based proteins, namely soy protein isolate (SPI) and mushroom protein (MP), which were physically entrapped inside the BC, respectively. The amounts of the plant-based proteins were determined by evaluating the tensile strength of BC bio-leather, and were found to be 20 wt% and 50 wt% of BC for SPI and MP, respectively. The enhanced properties of mechanical strength and durability of BC bio-leather were measured in terms of changes in water resistance, tensile strength, flexibility, crease recovery, and dimensional stability. The durability of BC was improved after the entrapment of proteins, and moreover, the durability of BC entrapped with plant-based proteins was further improved by the addition of glycerol. Especially, BC entrapped with MP and glycerol had better water resistance, tensile strength, flexibility, and crease recovery compared to cowhide leather. The chemical and physical structures of BC bio-leathers were studied using Fourier transform-infrared spectroscopy, X-ray diffraction, field-emission scanning electron microscopy, and energy dispersive X-ray spectroscopy analyses. From the results, it was confirmed that BC entrapped with MP and glycerol could be a suitable leather substitute.

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Ekaputri, J. J., M. S. Anam, Y. Luan, C. Fujiyama, N. Chijiwa, and D. H. E. Setiamarga. "Application of GGBFS and Bentonite to Auto-Healing Cracks of Cement Paste." Journal of Advanced Civil and Environmental Engineering 1, no. 1 (April 30, 2018): 38. http://dx.doi.org/10.30659/jacee.1.1.38-48.

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Cracks are caused by many factors. Shrinkage and external loading are the most common reason. It becomes a problem when the ingression of aggressive and harmful substance penetrates to the concrete gap. This problem reduces the durability of the structures. It is well known that self – healing of cracks significantly improves the durability of the concrete structure. This paper presents self-healing cracks of cement paste containing bentonite associated with ground granulated blast furnace slag. The self-healing properties were evaluated with four parameters: crack width on the surface, crack depth, tensile strength recovery, and flexural recovery. In combination with microscopic observation, a healing process over time is also performed. The results show that bentonite improves the healing properties, in terms of surface crack width and crack depth. On the other hand, GGBFS could also improve the healing process, in terms of crack depth, direst tensile recovery, and flexural stiffness recovery. Carbonation reaction is believed as the main mechanism, which contributes the self-healing process as well as the continuous hydration progress.

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Wang, Jun, Lizhong Shen, Yuhua Bi, Shaohua Liu, and Mingding Wan. "Power recovery of a variable nozzle turbocharged diesel engine at high altitude by response surface methodology and sequential quadratic programming." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 233, no. 4 (February 21, 2018): 810–23. http://dx.doi.org/10.1177/0954407017753913.

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Based on a review of the research methods about diesel engine performance recovery at high altitude and an experimental investigation, by optimizing variable nozzle turbocharger (VNT) and fuel supply system calibration parameters a novel method is proposed to enhance the performance of a turbocharged diesel engine at high altitude. At an altitude of 1920 m, four calibration parameters deeply affecting performance of the diesel engine were selected at the rated power condition, that is, injection quantity, injection timing, injection pressure, and VNT nozzle opening. In order to reduce thermal load of the diesel engine running in the plateau environment, reasonable coded levels of Design of Experiments (DoE) factors were chosen, and an experimental design matrix was selected based on the Box–Behnken design. The interaction effects of the four calibration parameters on engine performance were investigated using the response surface methodology. Power recovery optimization was carried out by means of sequential quadratic programming under a minimum smoke limit and durability constraints. The results show that this performance optimization method can effectively recover engine performance at high altitude. Moreover, it can, to an extent, alleviate the problems such as deterioration of fuel consumption and high thermal load induced by the rise in elevation. With optimized calibration parameters, the rated power of the diesel engine at an altitude of 1920 m proved to be recovered to that at sea level, and there was an increase of brake specific fuel consumption by less than 3% compared with that in the plain area, which met the performance and durability requirements for general turbocharged internal combustion engines at altitudes lower than 2000 m.

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Quadrini, Fabrizio, Leandro Iorio, Denise Bellisario, and Loredana Santo. "Durability of Shape Memory Polymer Composite Laminates under Thermo-Mechanical Cycling." Journal of Composites Science 6, no. 3 (March 15, 2022): 91. http://dx.doi.org/10.3390/jcs6030091.

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Shape memory polymer composites (SMPCs) have been manufactured by press moulding of carbon fibre-reinforced (CFR) prepregs with SMP interlayers. SMPC laminates have been produced with different numbers of CFR plies (i.e., 2, 4, 6, and 8) and different thicknesses of the SMP interlayers (i.e., 100 and 300 µm) for a sum of eight combinations. Co-curing of the prepreg plies and the SMP interlayers has led to an optimal adhesion of structural and functional plies, which has been confirmed by following testing. Single thermo-mechanical cycles at increasing strains (i.e., 0.06%, 0.12%, and 0.18%) and multiple cycling have been performed to test SMPC laminate durability. Delamination and fibre cracking were not observed during testing, and laminates showed a reproducible SM behaviour after 10 consecutive thermo-mechanical cycles. SM properties have been extracted from tests in terms of residual and memory loads as well as shape fixity and shape recovery. These data may be used for comparison of the performances of the different laminates, and as a first base for designing SMPC structures. Thin laminates exhibit lower recovery loads but higher shape fixity than thick ones, but the shape recovery is very high for all the SMPCs, with an average of 98%.

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Acevedo Gomez, Yasna, Göran Lindbergh, and Carina Lagergren. "Performance Recovery after Contamination with Nitrogen Dioxide in a PEM Fuel Cell." Molecules 25, no. 5 (March 2, 2020): 1115. http://dx.doi.org/10.3390/molecules25051115.

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While the market for fuel cell vehicles is increasing, these vehicles will still coexist with combustion engine vehicles on the roads and will be exposed to an environment with significant amounts of contaminants that will decrease the durability of the fuel cell. To investigate different recovery methods, in this study, a PEM fuel cell was contaminated with 100 ppm of NO2 at the cathode side. The possibility to recover the cell performance was studied by using different airflow rates, different current densities, and by subjecting the cell to successive polarization curves. The results show that the successive polarization curves are the best choice for recovery; it took 35 min to reach full recovery of cell performance, compared to 4.5 h of recovery with pure air at 0.5 A cm−2 and 110 mL min−1. However, the performance recovery at a current density of 0.2 A cm−2 and air flow 275 mL min−1 was done in 66 min, which is also a possible alternative. Additionally, two operation techniques were suggested and compared during 7 h of operation: air recovery and air depletion. The air recovery technique was shown to be a better choice than the air depletion technique.

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Wang, Liming, Chihiro Urata, Tomoya Sato, Matt W. England, and Atsushi Hozumi. "Self-Healing Superhydrophobic Materials Showing Quick Damage Recovery and Long-Term Durability." Langmuir 33, no. 38 (September 7, 2017): 9972–78. http://dx.doi.org/10.1021/acs.langmuir.7b02343.

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Poon, Chi-Sun, Salman Azhar, Mike Anson, and Yuk-Lung Wong. "Strength and durability recovery of fire-damaged concrete after post-fire-curing." Cement and Concrete Research 31, no. 9 (September 2001): 1307–18. http://dx.doi.org/10.1016/s0008-8846(01)00582-8.

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Roche, William K., and Tom Gormley. "The durability of coordinated bargaining: Crisis, recovery and pay fixing in Ireland." Economic and Industrial Democracy 41, no. 2 (August 24, 2017): 481–505. http://dx.doi.org/10.1177/0143831x17718067.

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The international literature on the economic and fiscal crisis that heralded the Great Recession emphasizes the negative effects of ‘disorganized decentralization’ on unions’ capacities for pay coordination and ultimately on their effectiveness in representing their members. These effects are seen as particularly pronounced in countries on the ‘European periphery’ such as Ireland. The article challenges this view by showing how the collapse of social partnership and centralized bargaining in Ireland was soon followed in the private sector by a new form of coordinated decentralized pattern bargaining. Coordinated sectoral bargaining emerged and was sustained in the public service. The durability of pay coordination is attributed to the strategic postures of unions, combined with embedded features of industrial relations institutions. The comparative import of the Irish case arises less from ‘disorganized decentralization’ than from the resilience of coordination following one of the most severe economic and fiscal shocks experienced by any advanced economy.

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Dong, Hongjun, Gang Chen, Jingxue Sun, Chunmei Li, Chade Lv, and Yidong Hu. "Durability, inactivation and regeneration of silver tetratantalate in photocatalytic H2 evolution." Physical Chemistry Chemical Physics 17, no. 2 (2015): 795–99. http://dx.doi.org/10.1039/c4cp04273e.

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The prepared Ag₂Ta₄O₁₁ photocatalyst exhibits durable activity for H₂ production from water, which can achieve the dual recovery of the photocatalyst and activity.

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Park, Jaechan, Dong-Hun Kang, and Bo-Young Chun. "Superciliary keyhole surgery for unruptured posterior communicating artery aneurysms with oculomotor nerve palsy: maximizing symptomatic resolution and minimizing surgical invasiveness." Journal of Neurosurgery 115, no. 4 (October 2011): 700–706. http://dx.doi.org/10.3171/2011.5.jns102087.

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Object For oculomotor nerve palsy (ONP) induced by unruptured posterior communicating artery (PCoA) aneurysms, the authors performed surgical clipping via a superciliary keyhole approach as an optimal treatment modality with high efficiency and low invasiveness. In this study, they then evaluated the technical feasibility, safety, clinical outcomes, including recovery from ONP as well as cosmetic results, and durability of the procedure. Methods Thirteen patients presenting with complete (7 patients) or incomplete (6 patients) ONP underwent surgery via a superciliary approach. The operative video record was used to evaluate the technical feasibility, neurological examinations and CT were performed to analyze the safety of the treatment, and neuroophthalmological examinations and 3D CT angiography were undertaken to determine the effectiveness and durability of the treatment. Results In all cases, the aneurysms were successfully clipped using a 3.5-cm eyebrow incision and supraorbital minicraniotomy. The mean operative time was 108 ± 24 minutes. Twelve (92.3%) of the 13 patients showed complete resolution of the ONP. All 6 patients (100%) with incomplete ONP recovered completely within 1–2 months after surgery, whereas 6 (85.7%) of the 7 patients with complete ONP recovered completely within 1–6 months after surgery. Cosmetic results for the operative wounds were excellent without frontalis palsy. The durability of the treatment was ascertained based on 3D CT angiograms obtained 1 year after surgery. Conclusions Surgical clipping via a superciliary keyhole approach can be an optimal treatment modality for PCoA aneurysms inducing ONP because it is effective, safe, and durable.

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Schmidt, Wolfram, Christoph Brandt-Wunderlich, Anja Kurzhals, Klaus-Peter Schmitz, and Niels Grabow. "Method to determine particle release during long-term loading for assessment of coating durability of cardiovascular stents." Current Directions in Biomedical Engineering 7, no. 2 (October 1, 2021): 704–7. http://dx.doi.org/10.1515/cdbme-2021-2179.

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Abstract Many catheters and vascular implants are coated to increase biocompatibility or to reduce friction during catheter based implantation. Several regulations require assessment of coating durability over the implant’s life time. An in vitro method for stent testing is presented to measure released particulate matter at defined inspection intervals. The method was validated using polystyrene microspheres with a size of 10, 25 and 50 μm to check for particle recovery (n=6). Two cleaning steps followed. Particle counting was performed by light obscuration method. The recovery rate was 103±5% (10μm), 94±4% (25 μm) and 78±12% (50 μm), respectively, meeting the requirements of FDA guidance documents (i.e. FDA 1545). Less than 3% of the particles were found in the cleaning solutions. The method using a fixed volume during stent loading can be adapted to all durability testers where tubes are used to fix the stents (radial pulsatile, bending, axial compression, torsion).

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Montazeri, Sh, Z. Ranjbar, and S. Rastegar. "The correlation between adhesion durability and viscoelastic creep-recovery behavior in epoxy coatings." Progress in Organic Coatings 111 (October 2017): 395–401. http://dx.doi.org/10.1016/j.porgcoat.2017.06.008.

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Kretinin, V., A. Teppoev, and V. Sokolova. "Modeling features of the technological process of forestry machines parts strengthening by the method of gas-thermal spraying." Journal of Physics: Conference Series 2131, no. 2 (December 1, 2021): 022034. http://dx.doi.org/10.1088/1742-6596/2131/2/022034.

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Abstract The efficiency of the working bodies of tillage forestry machines is determined by the sharpness of their soil-cutting elements. The purpose of the study is to substantiate the modes of the technological process of strengthening and recovery of cutting working forestry machines by the method of gas-flame spraying of wear-resistant coatings to increase their wear resistance and preserve the blade sharpness by implementing the self-sharpening effect, which allows increasing their life by 2-3 times. Technical and economic indicators of the gas-flame spraying process, as well as the scope of its application, depend on how well the technological modes of the spraying process are selected. The relevance of the topic is due to the need to increase the durability of tillage tools by strengthening their surfaces treatment. Such effective methods include the technology of recovery and strengthening of the working bodies of tillage machines using the technology of gas-flame spraying. In this regard, the issues of conducting research have become particularly relevant: to identify the relationships of technological parameters during the gas-flame application of wear-resistant coatings; to change the strength characteristics of the material of parts during their recovery, providing the necessary reliability and durability.

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Ramaswamy, Gita N., and Elizabeth P. Easter. "Durability and Aesthetic Properties of Kenaf/Cotton Blend Fabrics." Textile Research Journal 67, no. 11 (November 1997): 803–8. http://dx.doi.org/10.1177/004051759706701104.

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To evaluate the serviceability of a new textile product made of an unconventional fiber blend, it is important to determine if the fabric meets the specific standards required for the intended end-use. The value-added textile products of interest are fabrics made of 50/50 kenaf/cotton in the filling direction and 100% cotton in the warp direction, made in sateen, plain, twill, and oxford weaves. The control fabrics are of 100% cotton in only the plain and sateen weaves. The fabrics are characterized and compared based on ten of the most common fabric properties that affect their performance in everyday use: thread count, thickness, weight, breaking strength and elongation, dimensional stability, wrinkle recovery, abrasion resistance, tear strength, staining and stain release, and pilling resistance. Breaking strength of the experimental fabrics compares well with the control fabrics. Elongation at break is greater in the warp direction (19–35%) than in the filling direction (11–15%), but this difference is not significant. Wrinkle recovery for both fabrics is the same and improves over time. Shrinkage is identical in both fabrics. There is no significant difference in the stiffness of the two fabrics, possibly due to the carding step where kenaf fibers are carded to resemble cotton fibers. Abrasion and pilling resistance are good to excellent. Tear resistance is lower for the experimental fabrics compared with the controls, but it does pass the requirements for both upholstery and apparel fabrics. Kenaf/cotton blends perform the same or better than 100% cotton in their ability to release water-based stains, but the oil stain rates between 3 and 4, indicating a residual stain. Stain resistance can be improved by applying a soil-resistant finish. This study demonstrates that kenaf/cotton blend fabrics meet or exceed the performance requirements for both apparel ( i.e., outer wear items such as barn jackets, hunting vests, overalls, and caps) and upholstery fabrics. Additional advantages of the blend fabrics may be luster, interesting texture, and lightness.

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Sayegh, Mohamad-Ammar, Hammam Daraghma, Samir Mekid, and Salem Bashmal. "Review of Recent Bio-Inspired Design and Manufacturing of Whisker Tactile Sensors." Sensors 22, no. 7 (April 1, 2022): 2705. http://dx.doi.org/10.3390/s22072705.

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Whisker sensors are a class of tactile sensors that have recently attracted attention. Inspired by mammals’ whiskers known as mystacial vibrissae, they have displayed tremendous potential in a variety of applications e.g., robotics, underwater vehicles, minimally invasive surgeries, and leak detection. This paper provides a supplement to the recent tactile sensing techniques’ designs of whiskers that only sense at their base, as well as the materials employed, and manufacturing techniques. The article delves into the technical specifications of these sensors, such as the resolution, measurement range, sensitivity, durability, and recovery time, which determine their performance. The sensors’ sensitivity varies depending on the measured physical quantity; for example, the pressure sensors had an intermediate sensitivity of 58%/Pa and a response time of around 90 ms, whereas the force sensors that function based on piezoelectric effects exhibited good linearity in the measurements with a resolution of 3 µN and sensitivity of 0.1682 mV/µN. Some sensors were used to perform spatial mapping and the identification of the geometry and roughness of objects with a reported resolution of 25 nm. The durability and recovery time showed a wide range of values, with the maximum durability being 10,000 cycles and the shortest recovery time being 5 ms. Furthermore, the paper examines the fabrication of whiskers at the micro- and nanoscales, as well as their contributions to mechanical and thermal behavior. The commonly used manufacturing techniques of 3D printing, PDMS casting, and screen printing were used in addition to several micro and nanofabrication techniques such as photolithography, etching, and chemical vapor deposition. Lastly, the paper discusses the main potential applications of these sensors and potential research gaps in this field. In particular, the operation of whisker sensors under high temperatures or high pressure requires further investigation, as does the design of sensors to explore larger topologies.

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Craven, Ann-Maree S., Carmel M. Hawley, Stephen P. McDonald, Johan B. Rosman, Fiona G. Brown, and David W. Johnson. "Predictors of Renal Recovery in Australian and New Zealand end-Stage Renal Failure Patients Treated with Peritoneal Dialysis." Peritoneal Dialysis International: Journal of the International Society for Peritoneal Dialysis 27, no. 2 (March 2007): 184–91. http://dx.doi.org/10.1177/089686080702700216.

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Objectives The aim of this study was to investigate the factors affecting recovery and durability of dialysis-independent renal function following commencement of peritoneal dialysis (PD). Design Retrospective, observational cohort study of the Australian and New Zealand PD patient population. Setting Australia and New Zealand Dialysis and Transplant (ANZDATA) Registry. Participants The study reviewed all patients in Australia and New Zealand who commenced PD for treatment of end-stage renal failure between 15 May 1963 and 31 December 2004. Main Outcome Measures The primary outcomes examined were recovery of dialysis-independent renal function and time from PD commencement to recovery of renal function. A secondary outcome measure was time to renal death (patient death or recommencement of renal replacement therapy) following recovery of dialysis-independent renal function. Results 24663 patients commenced PD during the study period. Of these, 253 (1%) recovered dialysis-independent renal function. An increased likelihood of recovery was predicted by autoimmune renal disease, hemolytic-uremic syndrome, paraproteinemia, cortical necrosis, renovascular disease, and treatment in New Zealand. A reduced likelihood of recovery was associated with polycystic kidney disease and indigenous race. Analysis of a contemporary subset of 14743 patients in whom complete data were available for body mass index, smoking, and comorbidities yielded comparable results, except that increasing age was additionally associated with a decreased likelihood of recovery. Of the 253 patients who recovered renal function, 151 (60%) recommenced renal replacement therapy and 49 (19%) died within a median period of 226 days (interquartile range 110 – 581 days). The only significant predictors of continued renal survival after renal recovery were autoimmune renal disease and cortical necrosis. Conclusions Recovery of renal function in patients treated with PD is rare and determined mainly by renal disease type and race. In the majority of cases, recovery is short term. The apparently high rate of early patient death or return to dialysis after recovery of renal function on PD raises questions about the appropriateness of discontinuing PD therapy under such circumstances.

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Kim, Kyung-Hyun, Se-Hyun Jang, Chang-Kyu Choi, and Hee-Kyung Park. "Analysis of permeability and recovery rate for unclogging elastic surface filter and G-block for urban rainwater infrastructure regeneration." Water Practice and Technology 8, no. 3-4 (September 1, 2013): 527–35. http://dx.doi.org/10.2166/wpt.2013.056.

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To economically solve problems for rainwater renovation, stormwater treatment at the early stage is needed for the storage and reuse of safe rainwater. One of the alternatives changes the conventional rainwater drain into an unclogging elastic surface filter (UESF). UESF manufactured with the ethylene propohlene diene monomer (EPDM) has a merit of not only primary treatment of stormwater but also rapid restoration of its permeability by hammering after surface pollutions. Accordingly, in this study, the durability of pavement materials is evaluated by measuring the permeability of UESF and prefabricated prototype called G-block after the removal of surface pollutants. Also, the relationship between coefficient of restitution and recovery rate is estimated. The permeability is measured again after the removal of surface pollutants to calculate the recovery rate. As a result, the permeability of UESF and G-block is much greater than the general permeability standard of 0.01 cm/s. After hammering, the permeability is recovered and the recovery rates of UESF and G-block are 22.22 and 55.6%, respectively. Therefore, it proved that UESF and G-block could improve the permeability and recovery rate for the field application and renovate the conventional rainwater drain for rainwater recycling at urban sites.

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Baiamonte, Marilena, Claudio Colletti, Antonino Ragonesi, Cosimo Gerardi, and Nadka Tz Dintcheva. "Durability and Performance of Encapsulant Films for Bifacial Heterojunction Photovoltaic Modules." Polymers 14, no. 5 (March 6, 2022): 1052. http://dx.doi.org/10.3390/polym14051052.

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Energy recovery from renewable sources is a very attractive, and sometimes, challenging issue. To recover solar energy, the production of photovoltaic (PV) modules becomes a prosperous industrial certainty. An important material in PV modules production and correct functioning is the encapsulant material and it must have a good performance and durability. In this work, accurate characterizations of performance and durability, in terms of photo- and thermo-oxidation resistance, of encapsulants based on PolyEthylene Vinyl Acetate (EVA) and PolyOlefin Elastomer (POE), containing appropriate additives, before (pre-) and after (post-) lamination process have been carried out. To simulate industrial lamination processing conditions, both EVApre-lam and POEpre-lam sheets have been subjected to prolonged thermal treatment upon high pressure. To carry out an accurate characterization, differential scanning calorimetry, rheological and mechanical analysis, FTIR and UV-visible spectroscopy analyses have been performed on pre- and post-laminated EVA and POE. The durability, in terms of photo- and thermo-oxidation resistance, of pre-laminated and post-laminated EVA and POE sheets has been evaluated upon UVB exposure and prolonged thermal treatment, and the progress of degradation has been monitored by spectroscopy analysis. All obtained results agree that the lamination process has a beneficial effect on 3D-structuration of both EVA and POE sheets, and after lamination, the POE shows enhanced rigidity and appropriate ductility. Finally, although both EVA and POE can be considered good candidates as encapsulants for bifacial PV modules, it seems that the POE sheets show a better resistance to oxidation than the EVA sheets.

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Bekker, Peter C. F. "Control of Design for Durability and Recovery - Quality of Fired Clay Bricks and Tiles." Ceramics in Modern Technologies 3, no. 3 (October 7, 2021): 101–5. http://dx.doi.org/10.29272/cmt.2021.0018.

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Esquinas, A. R., J. I. Álvarez, J. R. Jiménez, J. M. Fernández, and J. de Brito. "Durability of self-compacting concrete made with recovery filler from hot-mix asphalt plants." Construction and Building Materials 161 (February 2018): 407–19. http://dx.doi.org/10.1016/j.conbuildmat.2017.11.142.

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Wu, Gu, Hou, Li, Ke, and Xiao. "Hybrid Nanocomposites of Cellulose/Carbon-Nanotubes/Polyurethane with Rapidly Water Sensitive Shape Memory Effect and Strain Sensing Performance." Polymers 11, no. 10 (September 27, 2019): 1586. http://dx.doi.org/10.3390/polym11101586.

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In this work, a fast water-responsive shape memory hybrid polymer based on thermoplastic polyurethane (TPU) was prepared by crosslinking with hydroxyethyl cotton cellulose nanofibers (CNF-C) and multi-walled carbon nanotubes (CNTs). The effect of CNTs content on the electrical conductivity of TPU/CNF-C/CNTs nanocomposite was investigated for the feasibility of being a strain sensor. In order to know its durability, the mechanical and water-responsive shape memory effects were studied comprehensively. The results indicated good mechanical properties and sensing performance for the TPU matrix fully crosslinked with CNF-C and CNTs. The water-induced shape fixity ratio (Rf) and shape recovery ratio (Rr) were 49.65% and 76.64%, respectively, indicating that the deformed composite was able to recover its original shape under a stimulus. The TPU/CNF-C/CNTs samples under their fixed and recovered shapes were tested to investigate their sensing properties, such as periodicity, frequency, and repeatability of the sensor spline under different loadings. Results indicated that the hybrid composite can sense large strains accurately for more than 103 times and water-induced shape recovery can to some extent maintain the sensing accuracy after material fatigue. With such good properties, we envisage that this kind of composite may play a significant role in developing new generations of water-responsive sensors or actuators.

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Asad, Asad, Masoud Rastgar, Hadi Nazaripoor, Mohtada Sadrzadeh, and Dan Sameoto. "Durability and Recoverability of Soft Lithographically Patterned Hydrogel Molds for the Formation of Phase Separation Membranes." Micromachines 11, no. 1 (January 19, 2020): 108. http://dx.doi.org/10.3390/mi11010108.

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Hydrogel-facilitated phase separation (HFPS) has recently been applied to make microstructured porous membranes by modified phase separation processes. In HFPS, a soft lithographically patterned hydrogel mold is used as a water content source that initiates the phase separation process in membrane fabrication. However, after each membrane casting, the hydrogel content changes due to the diffusion of organic solvent into the hydrogel from the original membrane solution. The absorption of solvent into the hydrogel mold limits the continuous use of the mold in repeated membrane casts. In this study, we investigated a simple treatment process for hydrogel mold recovery, consisting of warm and cold treatment steps to provide solvent extraction without changing the hydrogel mold integrity. The best recovery result was 96%, which was obtained by placing the hydrogel in a warm water bath (50 °C) for 10 min followed by immersing in a cold bath (23 °C) for 4 min and finally 4 min drying in air. This recovery was attributed to nearly complete solvent extraction without any deformation of the hydrogel structure. The reusability of hydrogel can assist in the development of a continuous membrane fabrication process using HFPS.

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Cho, Hang Sung, Hye Jun Yoon, Bum Hoon Lee, Jang Chang Woo, Hyeong Yeol Choi, Euijin Shim, and Ji Ho Youk. "Evaluation of Touch and Durability of Cotton Knit Fabrics Treated with Reactive Urethane-Silicone Softener." Polymers 14, no. 9 (May 3, 2022): 1873. http://dx.doi.org/10.3390/polym14091873.

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A new reactive urethane–silicone softener was developed to provide a soft touch to cotton knit fabrics with improved durability to washing and dimensional stability. The reactive urethane–silicone softener consisted of an amino silicone softener and a blocked isocyanate, which can crosslink and react with cellulose surfaces. The activated isocyanate from the blocked isocyanate reacted with the amino silicone softener by heat treatment at 150 °C for 30 min. The mechanical properties of the cotton knit fabrics treated with the urethane–silicone softener were evaluated using a Kawabata Evaluation System-Fabrics (KES-FB) system. The cotton knit fabrics treated with the urethane–silicone softener showed excellent elasticity, flexibility and shear recovery as well as excellent recovery against bending deformation, and soft and smooth surface characteristics with a small coefficient of friction that were maintained even after washing 20 times.

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Anglani, Giovanni, Jean-Marc Tulliani, and Paola Antonaci. "Behaviour of Pre-Cracked Self-Healing Cementitious Materials under Static and Cyclic Loading." Materials 13, no. 5 (March 5, 2020): 1149. http://dx.doi.org/10.3390/ma13051149.

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Capsule-based self-healing is increasingly being targeted as an effective way to improve the durability and sustainability of concrete infrastructures through the extension of their service life. Assessing the mechanical and durability behaviour of self-healing materials after damage and subsequent autonomous repair is essential to validate their possible use in real structures. In this study, self-healing mortars containing cementitious tubular capsules with a polyurethanic repairing agent were experimentally investigated. Their mechanical behaviour under both static and cyclic loading was analysed as a function of some factors related to the capsules themselves (production method, waterproof coating configuration, volume of repairing agent stored) or to the specimens (number, size and distribution of the capsules in the specimen). Their mechanical performances were quantified in terms of recovery of load-bearing capacity under static conditions and number of cycles to failure as a function of the peak force under cyclic conditions. Positive results were achieved, with a maximum load recovery index up to more than 40% and number of cycles to failure exceeding 10,000 in most cases, with peak force applied during cyclic loading at least corresponding to 70% of the estimated load-bearing capacity of the healed samples.

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Jia, Yongsheng, Enze Li, Zhiping Du, Jianfeng Li, and Fangqin Cheng. "Recovery of Bisphenol A by pH-Triggered Magnetic Nanoparticles." Nano 14, no. 05 (May 2019): 1950065. http://dx.doi.org/10.1142/s1793292019500656.

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Bisphenol A is not only one of the frequent contaminants of industrial wastewater, but also one of the main ingredients in polycarbonate and epoxy resins. This study synthesizes a pH-triggered Fe3O4@mSiO2@DPDES adsorbent for recycling Bisphenol A through adsorption–desorption process. Due to the strong [Formula: see text]–[Formula: see text] interaction between the phenyl groups in diphenyldiethoxysilane modified magnetic nanoparticles (MNPs) and Bisphenol A, absorbance reached 120.17[Formula: see text]mg/g at pH 7, allowing the bisphenol A adsorbed to Fe3O4@mSiO2@DPDES to be trivially separated from aqueous solutions with a magnet. Desorption of the adsorbed bisphenol A in aqueous solution occurred at pH 2, allowing an impressive 95% recovery rate. The durability of the Fe3O4@mSiO2@DPDES adsorbent was tested by repeated separation of bisphenol A from an aqueous solution, with the recovery efficiency remaining greater than 85% after five cycles.

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Ekdharmasuit, Panuwat. "Understanding the performance degradation and recovery of passive direct ethanol fuel cell." E3S Web of Conferences 355 (2022): 01007. http://dx.doi.org/10.1051/e3sconf/202235501007.

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In developing a fuel cell, one of the major issues that obstruct the commercialization of fuel cells is cell degradation. Meanwhile, the recovery process is an important factor to upgrade the performance and durability of fuel cell system. In this work, a passive direct ethanol fuel cell (DEFC) recovered from the unused aged cell was investigated. The hydrogen evolution method was applied for recovering the cell performance. Electrochemical tools including cell polarization, anode polarization, electrochemical impedance spectroscopy (EIS), ethanol crossover measurement, and chronoamperometry were conducted to examine the activation phenomenon. The polarization curve of the fresh membrane electrode assembly (MEA) was obviously superior to the aged one. The maximum power density was decreased from 1.10 to 0.06 mW·cm-2 reaching an approximate 95% decrement after keeping the cell for 1 year. The polarization curve of the MEA after conducting hydrogen evolution was better than that before. The maximum power density was enhanced from 0.06 to 0.07 mW·cm-2 presenting an approximate 16.67% increment after recovering the cell. The MEA after the recovery process could reduce ohmic resistance by 67.40% indicating the enhancement of ionic and electronic conductivity and could improve kinetic reaction at the electrode. In conclusion, the recovery process would be helpful for the unused aged cell to improve the performance shortly.

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Li, Yang, Jiaqi Chai, Ruijun Wang, Yu Zhou, and Xiaogen Tong. "A Review of the Durability-Related Features of Waste Tyre Rubber as a Partial Substitute for Natural Aggregate in Concrete." Buildings 12, no. 11 (November 14, 2022): 1975. http://dx.doi.org/10.3390/buildings12111975.

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As the number of discarded tyres continues to increase, causing serious environmental problems, the need of recycling the waste tyre rubber become extremely urgent in worldwide. Today, there is an increasing focus on recyclable materials. The reuse of waste tyre rubber in concrete contributes to sustainable development. In the past 10 years, numerous experiments on the recovery of rubber from waste tyres to produce concrete products have been conducted. In this review, we conclude the major achievement of rubberized concrete (RC) durability, discuss and analyse the influence of rubber replacement rates, replacement patterns, particle size and treatment methods. Results show that an increase in rubber content can improve the chloride penetration resistance, acid and sulphate attack resistance, freeze–thaw resistance, and alkali–silica reaction damage resistance of concrete, and the content of 5–20% has a significant improvement effect. Rubber replacing fine aggregate is the best scheme for durability, followed by cement and coarse aggregate. In addition, the recommended rubber particle size is 0–3 mm. However, the rubber particle has adverse effects on abrasion resistance, impermeability, water absorption resistance and carbonation resistance. The pre-treatment of rubber or the addition of supplementary cementitious materials are effective and viable ways of improving the durability of RC. Further research is needed on the long-term durability of RC, as well as on ductility, energy absorption, and thermal and corrosion resistance.

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TAMURA, Masaki, Yoshinori KITSUTAKA, Kenji ARAI, and Koichi MATSUZAWA. "A STUDY ON THE TOUGHNESS RECOVERY AND DURABILITY RETENTION OF CRACKS REPAIRED VARIOUS CONCRETE SPECIMENS." Journal of Structural and Construction Engineering (Transactions of AIJ) 70, no. 591 (2005): 19–24. http://dx.doi.org/10.3130/aijs.70.19_1.

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Lin, Xueqi, Bing Wang, Chenmin Zhao, Walter Nsengiyumva, Shuncong Zhong, Hui Chen, and Dianzi Liu. "Durability of Viscoelastic Fibre Prestressing in a Polymeric Composite." Polymers 15, no. 4 (February 6, 2023): 811. http://dx.doi.org/10.3390/polym15040811.

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Viscoelastic fibre prestressing (VFP) is a promising technique to counterbalance the potential thermal residual stress within a polymeric composite, offering superior mechanical benefits for structural engineering applications. It has been demonstrated that the time required for a desirable creep strain can be significantly reduced by implementing higher creep stress, while its long-term stability is still unknown. Here, we developed the prestress equivalence principle and investigated the durability of viscoelastic fibre prestressing within a composite in order to further enrich the prestress mechanisms. The effectiveness of the prestress equivalence principle was refined through Charpy impact testing of prestressed samples with various pre-strain levels. The durability was investigated by subjecting samples to both natural aging (up to 0.5 years) and accelerated aging (by using the time-temperature superposition principle). It is found that the prestress equivalence principle offers flexibility for viscoelastically prestressed polymeric matrix composite (VPPMC) technology; the impact benefits offered by VFP are still active after being accelerated aged to an equivalent of 20,000 years at 20 °C, inferring long-term reliability of VFP-generated fibre recovery within a polymeric composite. These findings demonstrated that both materials and energy consumption could be conserved for advanced composites. Therefore, they promote further steps of VPPMC technology toward potential industrial applications, especially for impact protection.

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Husnain, T., B. Mi, and R. Riffat. "Fouling and long-term durability of an integrated forward osmosis and membrane distillation system." Water Science and Technology 72, no. 11 (August 10, 2015): 2000–2005. http://dx.doi.org/10.2166/wst.2015.415.

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An integrated forward osmosis (FO) and membrane distillation (MD) system has great potential for sustainable wastewater reuse. However, the fouling and long-term durability of the system remains largely unknown. This study investigates the fouling behaviour and efficiency of cleaning procedures of FO and MD membranes used for treating domestic wastewater. Results showed that a significant decline in flux of both FO and MD membranes were observed during treatment of wastewater with organic foulants. However, shear force generated by the increased cross-flow physically removed the loosely attached foulants from the FO membrane surface and resulted in 86–88% recovery of flux by cleaning with tap water. For the MD membrane, almost no flux recovery was achieved due to adsorption of organic foulants on the hydrophobic membrane surface, thus indicating significant irreversible fouling/wetting, which may not be effectively cleaned even with chemical reagents. Long-term (10 d) tests showed consistent performance of the FO membrane by rejecting the contaminants. However, organic foulants reduced the hydrophobicity of the MD membrane, caused wetting problems and allowed contaminants to pass through. The results demonstrate that combination of the FO and MD processes can effectively reduce irreversible membrane fouling and solve the wetting problem of the MD membrane.

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Dudnikov, Anatoly, Igor Dudnikov, Oleksandr Gorbenko, and Anton Kelemesh. "INFLUENCE OF STRENGTHENING OF PARTS ON THE RELIABILITY OF MACHINES." Vibrations in engineering and technology, no. 3(94) (October 26, 2019): 17–22. http://dx.doi.org/10.37128/2306-8744-2019-3-3.

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The paper considers the issues of increasing the reliability of agricultural machinery through the use of reinforcing processing of recovered machine parts by plastic deformation, which provides an increase in the quality of their surface layer during recovery. The operational stability of the piston fingers and the upper heads of the connecting rods restored by vibration reinforcement on the engines working in the mechanized agricultural complex was carried out: tractor - agricultural machine - car. Studies have shown that the amount of wear of piston fingers restored by the vibration deformation method is 1.23 times smaller than the traditional method of recovery, which confirms the effectiveness of vibration technology. Technological processes of restoration of discs of diggers of beet harvesters, discs of coulters of grain planers, plow blades with use of vibrating vibrations of the processing tool are developed and put into production. The results of these developments showed an increase of 1.21 times the time of beet harvester harvesting with the diggers' wheels with the vibration-strengthened method; an increase in technical use factor of 1.07 times, compared to new 65G steel wheels. To improve the reliability of the PLN-5-35, PLN-3-35 plows, the technology of restoration of working bodies - blades is developed and introduced into production, which provides for increase of their durability and durability. The coefficient of technical use of the plow units with the blades restored by the developed technology is 1.01 times higher than that of the plow units with the new blades made of 65G steel. The wear rate of the toe, width and thickness of the blade are 1.51 respectively; 1.22 and 1.27 times less than the new 65G steel blades. The results of the study of vibrating reinforcing processing of working bodies of agricultural machinery help to increase their resource, which provides increased reliability of machines.

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TAKEUCHI, Masayuki, Takayuki NAGAI, Tsutomu KOIZUMI, Seiichiro TAKEDA, and Atsushi AOSHIMA. "Long-term Durability Test of Acid Recovery Evaporators Made of Ti-5%Ta Alloy and Zirconium." Journal of the Atomic Energy Society of Japan / Atomic Energy Society of Japan 42, no. 12 (2000): 1315–24. http://dx.doi.org/10.3327/jaesj.42.1315.

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Ahuja, Sunil K., Hemant Kulkarni, Gabriel Catano, Brian K. Agan, Jose F. Camargo, Weijing He, Robert J. O'Connell, et al. "CCL3L1-CCR5 genotype influences durability of immune recovery during antiretroviral therapy of HIV-1–infected individuals." Nature Medicine 14, no. 4 (March 30, 2008): 413–20. http://dx.doi.org/10.1038/nm1741.

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Calì, Michele, Bekkay Hajji, Gioele Nitto, and Alberto Acri. "The Design Value for Recycling End-of-Life Photovoltaic Panels." Applied Sciences 12, no. 18 (September 9, 2022): 9092. http://dx.doi.org/10.3390/app12189092.

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The production of electric energy has been increasingly deriving from renewable sources, and it is projected that this trend will continue over the next years. Among these sources, the use of solar energy is supposed to be considered the main future solution to global climate change and fossil fuel emissions. Since current photovoltaic (PV) panels are estimated to have an average life of 25–30 years, their disposal is very important for the recovery of materials already used and for introducing them again into other processing cycles. Innovative solutions are therefore needed to minimize the emissions of pollutants derived from the recycling of photovoltaic panels that no longer work. In this research, an analysis of data related to durability, recyclability rates, different possible design layouts and materials used in the design and manufacture of PV panels was conducted. Through a Design for Recycling (DfR) and a Design for Durability (DfD), the authors identified the optimal materials, the best geometries and geometric proportions as well as the most convenient geometric and dimensional tolerances in the couplings between the layers and the components that comprise the panel to attain the most current, efficient and effective solutions for recycling end-of-life (EoL) PV panels and for longer durability.

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Acosta, Joie D., Lane Burgette, Anita Chandra, David P. Eisenman, Ingrid Gonzalez, Danielle Varda, and Lea Xenakis. "How Community and Public Health Partnerships Contribute to Disaster Recovery and Resilience." Disaster Medicine and Public Health Preparedness 12, no. 5 (February 1, 2018): 635–43. http://dx.doi.org/10.1017/dmp.2017.130.

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AbstractObjectiveTo summarize ways that networks of community-based organizations (CBO), in partnership with public health departments, contribute to community recovery from disaster.MethodsThe study was conducted using an online survey administered one and 2 years after Hurricane Sandy to the partnership networks of 369 CBO and the New York Department of Health and Mental Hygiene. The survey assessed the structure and durability of networks, how they were influenced by storm damage, and whether more connected networks were associated with better recovery outcomes.ResultsDuring response and recovery, CBOs provide an array of critical public health services often outside their usual scope. New CBO partnerships were formed to support recovery, particularly in severely impacted areas. CBOs that were more connected to other CBOs and were part of a long-term recovery committee reported greater impacts on the community; however, a partnership with the local health department was not associated with recovery impacts.ConclusionCBO partners are flexible in their scope of services, and CBO partnerships often emerge in areas with the greatest storm damage, and subsequently the greatest community needs. National policies will advance if they account for the dynamic and emergent nature of these partnerships and their contributions, and clarify the role of government partners. (Disaster Med Public Health Preparedness. 2018;12:635–643)

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Abenu, Abigail, A. Ayodeji Elejuku, C. Obiora Onuzulike, and J. Light Bartholomew. "Recovery and Recycling of Municipal Solid Waste in Kaduna Metropolis." Journal of Science and Sustainable Development 8, no. 1 (March 18, 2022): 45–54. http://dx.doi.org/10.4314/jssd.v8i1.4.

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This study examined challenges faced during resource recovery and recycling; and highlights factors promoting the usage of recycled products in Kaduna State, Nigeria. Questionnaires were administered to 131 respondents made up of waste pickers, retailers of recyclables and recyclers. Of the three groups involved in the study, waste pickers were the most likely to seek change in livelihood while retailers of recyclables and recyclers largely wanted to continue in their work. The challenges in resource recovery for waste pickers were numerous but the greatest was social stigma. The major challenges for recyclers were the lack of capital and the high cost of acquiring tools and equipment. Positive attitudes to products made from recyclables, the durability of the products, and their cheap prices are factors that promote increased usage of products made from recyclables. To tackle some of the challenges experienced by waste pickers, inhabitants should separate their waste appropriately before disposal. Subsidized means of transportation, increased access to capital and acquisition of modern tools and equipment would further increase resource recovery and recycling.

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Li, Chuan Jun, Wan Wan Huang, Bin Han, Kai Li, and Shu Wen Liu. "Design of a New Type Intelligent Transformation Joint in Heavy Oil Thermal Recovery." Advanced Materials Research 1090 (February 2015): 238–44. http://dx.doi.org/10.4028/www.scientific.net/amr.1090.238.

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In order to improve the efficiency of the heavy oil thermal recovery in high temperature and high pressure conditions, a new transformation joint was designed based on the theory of fluid pressure difference. Through the automatic displacement of a one-way valve and a seal tongue under the action of pressure difference, it realized intelligent transformation between the production status and the well testing status. According to the oil recovery requirements about structure size, energy loss, high temperature sealing property and high temperature resistance, thermal expansion of material, designs about structure, key sizes, material model and sealing parts were carried out, and strength of key parts was verified theoretically. Fluent was used to simulate the internal flows of the structure, to analyze and verify the energy loss under the working status. The result shows that the product can meet the requirements of heavy oil exploitation, and its simple structure, high reliability and strong durability can greatly improve the efficiency of crude oil recovery.

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Madison, Mackenzie K., S. Keisin Wang, Justin R. King, Raghu L. Motaganahalli, and Alan P. Sawchuk. "Urgent Endovascular Repair of an Anterior Tibial Artery Aneurysm: Case Report and Literature Review." Vascular and Endovascular Surgery 54, no. 8 (August 13, 2020): 760–64. http://dx.doi.org/10.1177/1538574420945073.

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True aneurysms of the anterior tibial artery are rare with less than 20 published reports in the literature. We report an urgent endovascular repair of a true anterior tibial artery aneurysm in a patient with Ehlers-Danlos type IV, vascular type. This approach resulted in an uneventful recovery without the elevated risks associated with open vascular repair in the setting of connective tissue disorder. Continuous follow-up in the subsequent 4 years has demonstrated durability and efficacy of the original intervention.

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Nishida, Ryoichi, Toshiki Tago, Takashi Saitoh, Masahiro Seshimo, and Shin-ichi Nakao. "Development of CVD Silica Membranes Having High Hydrogen Permeance and Steam Durability and a Membrane Reactor for a Water Gas Shift Reaction." Membranes 9, no. 11 (October 30, 2019): 140. http://dx.doi.org/10.3390/membranes9110140.

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Water gas shift reaction of carbon monoxide (CO) with membrane reactors should be a promising method for hydrogen mass-production because of its high CO conversion, high hydrogen purity and low carbon dioxide emission. For developing such membrane reactors, we need hydrogen permselective membranes with high hydrogen permeance with order of 10−6 mol m−2 s−1 Pa−1 at 573 K and high steam durability. In this study, we have optimized the kind of substrates, precursors, vapor concentration, and chemical vapor deposition (CVD) time using the counter-diffusion CVD method for developing such membranes. The developed membrane prepared from hexamethyldisiloxane has a hydrogen permeance of 1.29 × 10−6 mol m−2 s−1 Pa−1 at 573 K and high steam durability. We also conducted water gas shift reactions with membrane reactors installed the developed silica membranes. The results indicated that reactions proceed efficiently with the conversion around 95–97%, hydrogen purity around 94%, and hydrogen recovery around 60% at space velocity (SV) 7000.

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49

Valastro, Salvatore, Emanuele Smecca, Salvatore Sanzaro, Filippo Giannazzo, Ioannis Deretzis, Antonino La Magna, Youhei Numata, et al. "Improved Electrical and Structural Stability in HTL-Free Perovskite Solar Cells by Vacuum Curing Treatment." Energies 13, no. 15 (August 1, 2020): 3953. http://dx.doi.org/10.3390/en13153953.

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Device engineering with proper material integration into perovskite solar cells (PSCs) would extend their durability provided a special care is spent to retain interface integrity during use. In this paper, we propose a method to preserve the perovskite (PSK) surface from solvent-mediated modification and damage that can occur during the deposition of a top contact and furtherly during operation. Our scheme used a hole transporting layer-free top-contact made of Carbon (mostly graphite) to the side of hole extraction. We demonstrated that the PSK/graphite interface benefits from applying a vacuum-curing step after contact deposition that allowed mitigating the loss in efficiency of the solar devices, as well as a full recovery of the electrical performances after device storage in dry nitrogen and dark conditions. The device durability compared to reference devices was tested over 90 days. Conductive atomic force microscopy (CAFM) disclosed an improved surface capability to hole exchange under the graphite contact after vacuum curing treatment.

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50

Malik, Umer Shahzad, Muhammad Bilal Khan Niazi, Zaib Jahan, Mazhar Iqbal Zafar, Dai-Viet N. Vo, and Farooq Sher. "Nano-structured dynamic Schiff base cues as robust self-healing polymers for biomedical and tissue engineering applications: a review." Environmental Chemistry Letters 20, no. 1 (October 31, 2021): 495–517. http://dx.doi.org/10.1007/s10311-021-01337-1.

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AbstractPolymer materials are vulnerable to damages, failures, and degradations, making them economically unreliable. Self-healing polymers, on the other hand, are multifunctional materials with superior properties of autonomic recovery from physical damages. These materials are suitable for biomedical and tissue engineering in terms of cost and durability. Schiff base linkages-based polymer materials are one of the robust techniques owing to their simple self-healing mechanism. These are dynamic reversible covalent bonds, easy to fabricate at mild conditions, and can self-reintegrate after network disruption at physiological conditions making them distinguished. Here we review self-healing polymer materials based on Schiff base bonds. We discuss the Schiff base bond formation between polymeric networks, which explains the self-healing phenomenon. These bonds have induced 100% recovery in optimal cases.

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