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BACKGROUND: Barrier films or dressings were reported to be effective in preventing radiation dermatitis (RD) in breast cancer patients, but their comparative efficacy is unknown. METHODS: A systematic literature search was performed on Embase, MEDLINE and Cochrane CENTRAL Registry of Clinical Trials from inception to October 20, 2023. Randomised controlled trials (RCTs) comparing barrier films or dressings to the standard of care (SOC) or other interventions were included. We estimated summary odds ratios and mean differences using network meta-analysis with random effects. This study was registered with PROSPERO (ID: CRD42023475021). RESULTS: Fourteen RCTs met inclusion criteria. Six interventions were analysed: 3M™ Moisturizing Double Barrier Cream (MDBC), 3M™ No Sting Barrier Film (BF), Hydrofilm® (HF), Mepitel® Film (MF), Silver Leaf Nylon Dressing and StrataXRT®. HF, MF and StrataXRT® reduced the incidence of moist desquamation compared to SOC (HF: OR = 0.08; p = 0.02; MF: OR = 0.31 p < 0.01; StrataXRT®: OR = 0.22, p = 0.04). The ranking of agents from most to least effective in preventing moist desquamation according to P-scores was HF (92.5%), MF (78.5%), StrataXRT® (70.1%), BF (46.4%), Silver Leaf Nylon Dressing (24.9%), MDBC (22.9%) and SOC (14.7%). Only four RCTs on HF and MF included patient-reported outcome (PRO) assessments that allowed pooling for analysis. HF and MF were more effective in reducing pain, itchiness and burning sensation compared to SOC (p < 0.01 for all symptoms). CONCLUSION: HF and MF were effective in preventing RD in breast cancer. Future RCTs should compare these interventions to effective cream preparations, such as topical corticosteroids.

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Gelatin (GL) and carboxymethyl cellulose (CMC) are common natural components for edible films, but their water barrier performance are finite as hydrophilic polymers. In this study, a GL/CMC water barrier film was prepared, characterized and applied. The microstructure results showed that complex coacervation at pH 2.0 and cross-linking effect of sodium benzoate resulted in strong interaction forces and dense structure of this film. Compared with pure GL or CMC film, this novel composite film decreased water vapor permeability by approximately 90%, and possessed applicable water solubility (51.5%) and stronger barrier to oxygen and UV light. Acidic environment and sodium benzoate endowed antibacterial activity. Furthermore, the water barrier coating film decreased water loss by 47.8% and improved overall quality of fresh strawberries stored at 25 °C for 6 d. Therefore, the novel water barrier film based on complex coacervation and cross-linking is promising to control the postharvest quality of perishable berries.

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Storage stability of pepper (Capsicum annuum L.) powder packaged using 2 different film pouches of Ny/PE and PET/Al/PE inserted with moisture absorbent and oxygen scavenger was investigated during storage at 25 °C for 5 months and at 40 °C for 14 days. The moisture content of red pepper powder did not change significantly in PET/Al/PE packaging but decreased significantly in Ny/PE packaging after the abuse of storage temperature. The color of red pepper powder was quite stable in all packaging treatments. Other quality characteristics of all packaged pepper powder, including microbial cell count, capsaicinoids, ascorbic acid, and free sugar content, were also maintained near their initial levels with no appreciable changes during storage. Red pepper powder with a moisture content of 13-14% and packaged with a film with high gas-barrier properties can be stored for more than 5 months even if there is an unexpected temperature abuse during storage.

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PURPOSE: Radiation dermatitis (RD) is the most common side effect of adjuvant whole-breast or chest wall irradiation, majorly impacting quality of life in numerous patients. The use of barrier films (polyurethane dressings such as Hydrofilm® and Mepitel® film remaining on the skin for the duration of the radiation treatment) has been investigated as a prophylactic measure in several prospective trials. Here, we critically appraise the available evidence behind preventive barrier film application in the context of breast cancer treatment. METHODS: International literature was reviewed and high-quality randomised controlled trials (RCTs) were included in this meta-analysis. RESULTS: The results of 5 RCTs (663 patients; >90% Caucasian) were analysed. Overall, barrier films lead to improved clinician- and patient-reported outcomes: fewer grade ≥2 RD (11% vs. 42%; OR = 0.16; p < 0.001) and moist desquamation (2% vs. 16%; OR = 0.12; p = 0.006), as well as less patient-reported pain (standardised mean difference [SMD] -0.51; p < 0.001), itching (SMD -0.52; p = 0.001), burning (SMD -0.41; p = 0.011), and limitations in daily activities (SMD -0.20; p = 0.007). Furthermore, barrier films have a high acceptance rate among patients, as well as a favourable cost-benefit ratio. Possible side effects due to its application are mild and mostly self-limiting. Overall, there was a lack of information on the radiation treatment techniques used. CONCLUSION: The evidence presented in this meta-analysis suggests that barrier films are an excellent tool in the prevention of RD among Caucasian patients receiving whole-breast or chest wall irradiation. Its use should therefore be considered routinely in these patients.

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PURPOSE: This systematic review and meta-analysis aimed to evaluate the efficacy of barrier films and dressings in preventing acute radiation dermatitis (RD). METHODS: OVID Medline, Embase, and Cochrane databases were searched from 1946 to September 2020 to identify randomized controlled trials on the use of barrier films or dressings to prevent RD. For comparable outcomes between studies, pooled effect sizes and 95% confidence intervals (CI) were calculated using the random effects analysis in RevMan 5.4. RESULTS: Fourteen and 11 studies were included in the qualitative and quantitative analyses, respectively. Five types of barrier films used for RD were identified: Hydrofilm, StrataXRT®, Mepitel® Film, 3 M™ Cavilon™ No-Sting Barrier Film, and silver leaf nylon dressing. Hydrofilm and Mepitel Film significantly reduced the development of RD grade ≥ 2 in breast and head and neck cancer patients (RR 0.32, 95%CI 0.19, 0.56, p < 0.0001; RR 0.21, 95%CI 0.05, 0.89, p = 0.03, resp.). Moreover, Hydrofilm had a beneficial effect on patient-reported outcomes (PROs) (SMD -0.75, 95%CI -1.2, -0.29, p = 0.001). The meta-analyses on the other barrier films did not show any significant effect. CONCLUSION: This review and meta-analysis demonstrated that Hydrofilm and Mepitel Film could effectively reduce RD severity and improve PROs. The evidence is generally weak for all the studies on barrier films and dressings due to a limited study number, high risk of bias, small sample sizes, and minimal comparable outcome measures. It's potential has been proven, but future research in this field is recommended to confirm the efficacy of these products and assess real-world feasibility.

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Pesticides are essentially toxic to living things and are used openly, so it is necessary to monitor them to prevent their adverse effects. We have studied farmers'exposure to pesticides during soil fumigation operations with chloropicrin, and have noted a danger to the farmers in the form of dyspnea. We examined accidents/symptoms of residents from chloropicrin reported by the Ministry of Agriculture, Forestry, and Fishery from 2010 to 2019. Eighty percent of the cause of these manifestations was the failure to cover fumigated soil with plastic film. Symptoms shown by residents included eye pain (91%), sore throat (35%), and headache (14%). The most common film used for covering fumigated soil in Japan is polyethylene. The agricultural technology centers in Japan have studied the use of gas barrier films, and found it possible to decrease the amount of chloropicrin used to 1/3, and leakage into the atmosphere to less than 1/10. This technology has become popular in the production of sweet potatoes in Tokushima Prefecture. Soil disinfection by solar heat has also been studied in Japan. These studies have shown positive advancements in the fertilization of soil and in the control of microbes. Chloropicrin has caused occupational exposure to farmers and environmental exposure to local residents. It is advisable that the technologies mentioned above become common practice.

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Skin excoriation is a common complication of enteral tube feeding; however, universal guidelines for treatment do not exist. A quality improvement pilot study to inform the development of a local clinical care pathway was conducted. The enteral nutrition team identified products and assessed patient preference, ease of use, availability, and clinical outcomes for inclusion. This pathway includes gentle site cleansing followed by skin protectant application. For mild skin excoriation (<5 mm), acrylate terpolymer barrier film (3M Cavilon No Sting Barrier Film) was applied once every seven days. Moderate skin excoriation (5-20 mm) received acrylate terpolymer barrier film twice a day for seven days. Severe skin excoriation (>20 mm) received advanced elastomeric skin protectant (3M Cavilon Advanced Skin Protectant) applied once every 3-4 days for 2-4 weeks. Ten patients were included, three were selected for discussion. Adoption of this local clinical care pathway resulted in skin healing and improved patient comfort.

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Objetivos: Valorar la efectividad de las películas de barrera no irritante (PBNI) y la pomada de óxido de zinc (ZnO) en la prevención y tratamiento de lesiones asociadas a la incontinencia (DAI).Metodología:Revisión exploratoria en las principales bases de datos bibliográficas (PubMed, CINAHL, LILACS, CUIDEN y Embase). Estudios de investigación acerca de las PBNI y las pomadas de ZnO desde 2010 hasta febrero de 2021, sin límite de idiomas. Criterios de inclusión: revisiones sistemáticas, artículos originales de cualquier tipo y tesis doctorales que relacionen la crema de ZnO o la PBNI con la prevención o tratamiento de la incontinencia urinaria o mixta, así como estudios que evalúen su rentabilidad o efectos secundarios.Resultados:Se han analizado 12 estudios: 5 ensayos clínicos aleatorios, 6 revisiones sistemáticas y 1 estudio descriptivo. No se ha hallado superioridad de eficacia de la PBNI frente a la pomada de ZnO, aunque aún se precisan más estudios para un posicionamiento, sí parece que la evidencia hasta el momento respalda una superior rentabilidad de la PBNI por coste por proceso.Conclusiones:Se precisaría de una herramienta estandarizada y validada de evaluación de la piel de la DAI. Se requieren más ensayos clínicos con un tamaño muestral más grande para poder comparar los diferentes productos y presentaciones con un diseño adecuado para poder realizar un metaanálisis después, y objetivos de estudio tanto de prevención como de tratamiento. (A)

Objectives: To assess the primary and secondary studies generated from 2010 to the present on the effectiveness of non-irritant barrier films (NIBF) and zinc oxide ointment (ZnO) in the prevention and treatment of incontinence-associated injuries (IAD).Methods:Scoping review in the main bibliographic databases (PubMed, CINAHL, LILACS, CUIDEN and Embase). Research studies on LIPNPs and ZnO ointments from 2010 to February 2021, with no language limit. Inclusion criteria: systematic reviews, original articles of any type and doctoral theses linking ZnO cream or PBNI to the prevention or treatment of urinary or mixed incontinence, as well as studies evaluating their cost-effectiveness or side effects.Results:Twelve studies were analyzed: 5 randomized clinical trials, 6 systematic reviews and 1 descriptive study. No superiority of efficacy of PBNI over ZnO ointment was found, more studies are still needed for a position but it does appear that the evidence so far supports a superior cost-effectiveness of PBNI on a cost per process basis.Conclusions:A standardized and validated IAP skin assessment tool would be required. More clinical trials with a larger sample size are needed to compare the different products and presentations with an adequate design to be able to perform a meta-analysis afterwards, and study objectives for both prevention and treatment.(AU)

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BACKGROUND: COVID-19 is rapidly transmitted and has aroused enormous concern globally. This study aimed to investigate the effect of hydrocolloid dressing combined with 3M Cavilon No-Sting Barrier Film on the prevention of facial pressure injury in medical staff tasked with preventing and controlling COVID-19. METHODS: This was a self-controlled study. Medical staff who treated patients with COVID-19 infection in isolation wards from 6 January to 2 February, 2020, were selected to participate. Phase I was defined as the first 2 weeks of medical personnel entering the isolation ward, with phase II being the following 2 weeks. In phase I, medical workers only used hydrocolloid dressing on their faces, and in phase II, they used both hydrocolloid dressing and 3M Cavilon No-Sting Barrier Film. RESULTS: A total of 116 medical workers were selected as research subjects. The average facial local temperature in phase I was higher than that in phase II from the baseline (day 1) to the end of the study (day 14); however, there was no statistically significant difference (P>0.05). The incidence of facial pressure injury in phase II was lower than that in phase I (P<0.05); the facial skin comfort level among medical staff in phase II was higher than that in phase I (P<0.05). CONCLUSIONS: Hydrocolloid dressing combined with 3M Cavilon No-Sting Barrier Film for facial skin care can effectively reduce the incidence of facial pressure injury and can improve skin comfort level while ensuring isolation and a protective effect.

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Hemicellulose with good biodegradability and low oxygen permeability shows great potential in food packaging. However, its strong hydrophilicity leads to its poor moisture resistance, which hinders its wider application. In this paper, a near-hydrophobic hemicellulose was obtained by using single-step synthesis from poplar powder via etherification modification with epoxy chloropropane. This proposed approach has the advantage of avoiding the destruction of hemicellulose structure by secondary alkali-hydrolysis, which was what usually occurred in traditional etherification procedures. The feasibility of using epoxy chloropropane as an alkylation reagent to etherify hemicellulose was confirmed, and the reaction mechanism was elucidated. Contact angle test, thermogravimetric analysis, oxygen transmittance test, and infrared spectrum analysis showed that the barrier property and thermal stability of etherified hemicellulose films have been significantly improved. At an epoxy chloropropane/wood powder ratio (volume/weight) of 2/3 (mL/g), the epoxy hemicellulose films contained the most epoxy groups and displayed the best performance, i.e., tensile strength of 14.6 MPa, surface contact angle of 71.7° and oxygen transmission coefficient of 1.9 (cm3·µm)/(m2·d·kPa), showing great promise as barrier film in food-packaging.

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Herein, we report on a transparent, water-stable, high oxygen barrier packaging film made from a combination of cellulose nanofiber (CNF) and a fluoropolymer (FP) coating. Nanofibrillation of the hardwood kraft pulp was carried out using succinic anhydride pretreatment and aqueous counter collision (ACC) technique to obtain ultrafine (5-7 nm) succinylated cellulose nanofibers (SCNF), which was readily fabricated into a thin coating (on PET film) as well as a self-standing film. Introducing the FP topcoat on SCNF enabled a synergistic enhancement of both oxygen barrier performance and stability against water-swelling.

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Graphene oxide(GO)/polylactic acid (PLA) nanocomposite, prepared using a solvent-free melt mixing processing, is investigated as a potential oxygen barrier packaging film in this work. In order to disperse GO homogeneously in PLA matrix, hydrophobic silane coupling agent, i.e., γ-(2,3-epoxypropoxy)propyltrimethoxysilane (KH560), is used to modify the graphene oxide sheets. The modified GO is able to be well bonded to the PLA due to the formation of covalent bonds between the epoxy groups of KH560 and the carboxyl and hydroxyl terminal groups of PLA. Furthermore, the thermal stability of GO is enhanced due to the long alkyl side chain of KH560, which could also increase the crystallinity of PLA. As a result, the crystallinity of PLA is significantly improved because of the linear KH560 chains, which can act as nucleating agents to improve the crystallization. The KH560-GO helps to reduce the O2 permeability of KH560-GO/PLA composite films via a dual-action mechanism: (1) providing physical barrier due to their native barrier properties, and (2) by resulting in higher degree of crystallinity. The as-prepared KH560-GO0.75/PLA is able to exhibit ca. 33% and ca. 13% decrease in the PO2 than the neat PLA and GO0.75/PLA film, respectively. Finally, the mechanical properties and impact fractured surfaces indicate that the increase in the tensile strength and elongation at break value of KH560-GO/PLA are due to the strong interfacial adhesion and the strong bonding between the epoxy group of KH560-GO and hydroxyl and carboxyl acid terminal groups of PLA matrix.

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Organic electronic devices such as organic light-emitting diodes (OLEDs), quantum dot LEDs, and organic photovoltaics are promising technologies for future electronics. However, achieving long-term stability of organic-based optoelectronic devices has been regarded as a crucial problem to be solved. In this work, a simple and reproducible fabrication method for ultralow water permeation barrier films having a triple-layered (triad) hydrogenated silicon nitride (a-SiNx:H)/nanosilicon oxynitride (n-SiOxNy)/hybrid silicon oxide (h-SiOx) multistructure is presented. Two triad (a-SiNx:H/n-SiOxNy/h-SiOx)n=2 multistructure barrier films are deposited on both sides of a poly(ethylene terephthalate) substrate using a combination of low-pressure plasma-enhanced chemical vapor deposition and dip coating. The deposited films show a high average transmittance (400-700 nm) of 84% and an ultralow water vapor transmission rate of 2 × 10-6 g/m2/day. In the electroluminescence characteristics of OLEDs encapsulated with two triad barrier films, the operational lifetime (T50) of OLEDs is 1584 h, which is almost similar to that (1416 h) of OLEDs encapsulated with a glass lid.

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Tension blisters from adhesive dressings may lead to pain and delayed surgical wound healing for surgical patients and cause an institutional cost burden. Commercial skin barrier film products may reduce dressing-related postoperative skin blistering in surgical patients. Project investigators at an orthopedic specialty hospital randomized 185 surgical spine patients to receive either a standard wound dressing (ie, control group) or a dressing with the addition of a skin barrier film applied beneath it (eg, treatment group). During the first postoperative dressing change, the participants' skin was assessed for redness, soreness, blistering, or tearing. Approximately 15% of participants in the treatment group and 15% of participants in the control group developed a postoperative skin injury (P = .98). Multivariable analyses did not indicate the skin barrier film provided a protective effect. Additionally, there was no association between patient-specific characteristics and skin blisters among the participants. These results do not support the use of a skin barrier film in surgical spine patients.

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Integrating a dissolvable membrane into a sensor allows the control of sample flow, location and duration in critical areas. These time-barrier films stop the flow of samples until the membrane has dissolved, thus, for example, allowing increased exposure time between immunoreagents for the formation of greater numbers of immuno-complexes, ensuring higher sensitivity, reactivity, and helping to reduce false-positive signals. In this study, dissolvable polyvinyl alcohol (PVA) films are used in a 3D-printed sensor holder, which enables film integration without the use of glue. PVA is a synthetic hydrophilic linear polymer, its solubility is dependent on its molecular weight and degree of hydrolysis. Three types of PVAs films were tested herein: (1) PVA 1-Mw: 30⁻70 K, 87⁻90% hydrolyzed; (2) PVA 2-Mw: 31⁻50 K, 98⁻99% hydrolyzed and (3) PVA 3-Mw: 89⁻98 K, >99% hydrolyzed. The films were exposed to water in (1) the novel 3D-printed holder and (2) directly immersed into a water droplet. After comparing the time taken to dissolve PVA 1⁻3 films, PVA 1 films of 5⁻20% (w/v) are found to be most suitable as time barrier films, due to their optimal dissolution times and physical properties for integration into the customized 3D-printed holder.

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Developing high-performance oxygen barrier films using biomass-based materials is crucial for the development of green and sustainable society. Herein, we develop a strategy to synthesize polyacrylic acid-grafted-acryloyl/hemicellulose composites (PAA-g-AH) as film materials with excellent oxygen barrier property. The as-synthesized films were extensively characterized by Fourier transform infrared (FT-IR), scanning electron microscopy (SEM), gel permeation chromatography (GPC), 1H nuclear magnetic resonance (1H NMR), mechanical test, light transmittance and oxygen transmission rate (OTR) measurement. All these testing results showed that the optimum film exhibit great oxygen barrier property with a low OTR value of 0.25 ± 0.01 cm3* µm/(m2*d*kPa), which was much lower than that of pure PAA film. Moreover, the hybrid films possess well mechanical strength, light transmittance and recycle usage properties. Experimental results indicated that the as-synthesized films have great potential applications in several fields as packaging materials, such as drug, food and electronic products.

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Graphene has recently attracted particular interest as a flexible barrier film preventing permeation of gases and moistures. However, it has been proved to be exceptionally challenging to develop large-scale graphene films with little oxygen and moisture permeation suitable for industrial uses, mainly due to the presence of nanometer-sized defects of obscure origins. Here, the origins of water permeable routes on graphene-coated Cu foils are investigated by observing the micrometer-sized rusts in the underlying Cu substrates, and a site-selective passivation method of the nanometer-sized routes is devised. It is revealed that nanometer-sized holes or cracks are primarily concentrated on graphene wrinkles rather than on other structural imperfections, resulting in severe degradation of its water impermeability. They are found to be predominantly induced by the delamination of graphene bound to Cu as a release of thermal stress during the cooling stage after graphene growth, especially at the intersection of the Cu step edges and wrinkles owing to their higher adhesion energy. Furthermore, the investigated routes are site-selectively passivated by an electron-beam-induced amorphous carbon layer, thus a substantial improvement in water impermeability is achieved. This approach is likely to be extended for offering novel barrier properties in flexible films based on graphene and on other atomic crystals.

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BACKGROUND: In the industrialized world, approximately 1-1.5% of the population has received treatments for skin lesions. In the 1990s, a polymeric barrier film called the No Sting Barrier Film (NSBF) was developed as an alternative to petrolatum-based ointments and zinc oxide formulas. To date, few studies have explored the effectiveness of NSBF in protecting skin integrity. AIMS: To map the methods, fields and outcomes used to produce evidence on NSBF effectiveness. METHODS: A scoping review was performed in 2015. A search strategy for identifying relevant studies was designed and performed. Systematic reviews, meta-analyses, randomized controlled trials, controlled clinical trials, and comparative studies for all types of interventions were included; research conducted in any clinical context was eligible for inclusion. Studies were selected by two reviewers; data extraction and analysis also was performed by two reviewers and disagreements were discussed. RESULTS: Six studies were included. NSBF's potential as a skin protector was investigated with respect to (a) chronic wounds (pressure ulcers or vascular leg ulcers); (b) urinary or fecal incontinence; and (c) post-mastectomy irradiation. The principal clinical outcomes investigated were, respectively: (a) wound healing, wound exudates and erythema control; (b) incidence of incontinence-associated dermatitis and skin reactions; and (c) intensity of pruritus and skin reactions. Pain and comfort were measured in all clinical applications. The main process outcomes investigated were: (a) ease of application, (b) application and removal time, and (c) costs. Zinc oxide and petroleum formulations were the most common comparison interventions in research on chronic ulcers and incontinence; sorbolene cream and topical corticosteroids were the most frequent comparisons in the context of post-mastectomy irradiation. LINKING EVIDENCE TO ACTION: NBSF may be used for peri-wound skin protection in patients with chronic wounds, with urinary or fecal incontinence and for women undergoing post-mastectomy irradiation. However, more robust experimental studies are needed in all clinical fields where NBSF is applied.

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The objective of this study was to evaluate 2 systems for covering corn silage in bunker silos. The first system consisted of a sheet of 45-µm-thick oxygen barrier film (OB, polyethylene + ethylene-vinyl alcohol) placed along the length of the sidewall before filling. After filling, the excess film was pulled over the wall on top of the silage, and a sheet of polyethylene was placed on top. The second system involved using a standard sheet (ST) of 180-µm-thick polyethylene film. Eight commercial bunker silos were divided into 2 parts lengthwise so that one-half of the silo was covered with OB and the other half with a ST system. During the filling, 3 net bags with chopped corn were buried in the central part (halfway between the top and bottom of the silo) of the bunkers (CCOR) in 3 sections 10 m apart. After filling, 18 net bags (9 per covering system) were buried 40 cm below the top surface of the 3 sections. These bags were placed at 3 distances from the bunker walls (0 to 50 cm, 51 to 100 cm, and 101 to 150 cm). During unloading, the bags were removed from the silos to determine the dry matter (DM) losses, fermentation end products, and nutritive value. The Milk2006 spreadsheet was used to estimate milk per tonne of DM. The model included the fixed effect of treatment (7 different locations in the bunker) and the random effect of the silo. Two contrasts were tested to compare silages in the top laterals (shoulders) with that in the CCOR (CCOR vs. OB and CCOR vs. ST). Three contrasts compared the corresponding distances of the silage covered by the 2 systems (OB50 vs. ST50, OB100 vs. ST100 and OB150 vs. ST150). Variables were analyzed with the PROC MIXED procedure of the SAS at the 5% level. The OB method produced well-fermented silages, which were similar to CCOR, whereas the OB system showed less lactic acid and greater pH and mold counts compared with CCOR. The ST method had 116.2 kg of milk/t less than the CCOR, as the OB system and the CCOR were similar (1,258.3 and 1,294.0 kg/t, respectively). Regarding the distances from the walls, the effects were more pronounced from 0 to 101 cm. The OB50 and OB100 silages had better quality and lower mold counts and DM losses than ST50 and ST100. The OB system reduced DM and nutrient losses at the shoulders in farm bunker corn silages compared with no sidewall plastic. The OB film should lap onto the crop for at least 200 cm so that 150 cm are covered outward from the wall.

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We enhanced the optical transmittance of a multilayer barrier film by inserting a refractive index grading layer (RIGL). The result indicates that the Fresnel reflection, induced by the difference of refractive indices between Si(x)N(y) and SiO2, is reduced by the RIGL. To eliminate the Fresnel reflection while maintaining high transmittance, the optimized design of grading structures with the RIGL was conducted using an optical simulator. With the RIGL, we achieved averaged transmittance in the visible wavelength region by 89.6%. It is found that the optimized grading structure inserting the multilayer barrier film has a higher optical transmittance (89.6%) in the visible region than that of a no grading sample (82.6%). Furthermore, luminance is enhanced by 14.5% (from 10,190 to 11,670 cd m(-2) at 30 mA cm(-2)) when the grading structure is applied to organic light-emitting diodes. Finally, the results offer new opportunities in development of multilayer barrier films, which assist industrialization of very cost-effective flexible organic electronic devices.