Introduction The use of enzymes in the textile chemical processing is rapidly gaining global recognition because of their non- toxic and eco-friendly characteristics with the increasingly important requirements for textile manufacturers to reduce pollution in textile production. Enzymes sources, activity, specificity, reaction, mechanism and thermodynamics, function of textile processing with enzymes, major enzymatic applications in textile wet processing and promising areas of enzyme applications in textile processing are discussed. The aim is to provide the textile technologist with an understanding of enzymes and their use with textile materials [ 1 4 ].
Using this model, a study with primary endpoints of wear time and fluid handling capacity was conducted to compare two foam dressings: A cm2 artificial wound bed, created using a nonstick absorbent pad, was applied to the lower back of 24 healthy volunteers and the tip of a gauge catheter was inserted into the pad to administer AWF.
The pad and catheter were secured in place with paper tape and covered with the test dressings.
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This model and 1. Comparisons between dressing outcomes using this model and previously published in vitro results suggest the model may be valid and reliable. Studies to ascertain the ability of this model to predict clinical dressing performance and research to compare other wound outcomes that affect dressing change frequency and cost eg, healing are needed.
Potential Conflicts of Interest: Lutz is a former employee of 3M Health Care St. Paul, MN and received financial compensation for preparing this manuscript.
Walters are employed by 3M Health Care. Chronic wounds such A comparative study on the absorbency pressure ulcers, diabetic foot ulcers, and venous ulcers typically exhibit some degree of drainage.
At the same time, the wound should not become overly wet and cause periwound skin maceration. Thus, the authors conclude that dressings must have sufficient fluid handling capacity to reduce the risk of maceration and still provide a moist environment for healing, an important concept not to be overlooked.
In a retrospective study,4 participants with pressure, diabetic, or venous ulcers with varying amounts of exudate ranging from none to large in a variety of healthcare settings were less likely to be healed after 3 months of care if their wounds were not provided an appropriate exudate management dressing when compared to wounds receiving appropriate exudate management.
Fluid handling capacity also may affect the functional wear time of dressings. Extended wear time is important not only in minimizing disruption of healing wounds, but also in controlling the overall cost of wound treatment. Thus, the authors concluded that defining wound care costs solely on the cost of products used and not taking wear time or healing outcome into account is inaccurate and may lead to false assumptions of economy.
Several advanced adhesive dressing technologies, including hydrocolloid, transparent absorbent, and foam, have been developed over the past three decades to help meet the clinical need for moisture-retentive absorbent adhesive wound dressings with extended wear time.
However, information about the comparative effectiveness healing outcome of these dressings, as well as their performance wear timeremains limited. Chronic wound patients usually have complex comorbidities requiring multiple therapies; these patients are difficult to follow as they move through the healthcare system.
Rarely is a patient hospitalized for an extended period of time simply for a chronic wound. Clinical measurement of dressing wear time performance is extremely challenging due to the high degree of variability that exists among patients, wounds, clinical practice, and established care protocols.
Even for wounds with similar etiology, test condition variability make estimates of clinical wear time difficult to obtain. As a result, clinicians, product engineers, and regulatory bodies have sought methods of comparing the performance of absorbent adhesive dressings—ie, an in vivo test method that bridges the gap between purely in vitro and clinical study models.
One such test method has been proposed and tested with hydrocolloid and transparent absorbent dressings. Although this test is not intended to be a substitute for clinical trials, it can provide meaningful insight into potential wear times and fluid handling capacities of absorbent adhesive dressings.
The objective of this study was to assess the wear time and fluid handling capacity of two foam dressings: Literature Review Relatively little information has been published on the use of nonpatient models to evaluate absorbent wound dressing performance.
Inwhile studying the fluid handling properties of hydrocolloid dressings, Thomas and Loveless10 proposed using the sum of dressing absorbency and moisture vapor transmission rate MVTRas determined by the Paddington Cup method, for comparing total fluid handling capacity of dressings.
InSprung et al11 described a similar procedure and using an immersion test procedure further demonstrated that absorption characteristics of some wound dressings hydrogels and hydrocolloids can be influenced by the choice of fluid used in the test wound fluid, saline, or water.
The test utilizes a Paddington Cup apparatus that consists of an open and a closed chamber, each with an orifice area of 10 cm2. A sample of the test dressing is placed between the two chambers, which are clamped together with a moisture-tight seal.
The closed chamber contains a known quantity of a solution of sodium and calcium chloride that is isotonic to human serum.a comparative study between one bath dyeing method for polyester cotton (pc) blended fabric over conventional two bath dyeing method Comparative Study . Absorbencies of six different rodent beddings: commercially advertised absorbencies are potentially misleading.
and corncob, calculated both by volume and by mass. Absorbency per unit volume correlated positively with bedding density, while absorbency per unit mass correlated negatively. Comparative Study; MeSH Terms. Advertising . Absorbent Properties of Carboxymethylated Fiber, Hydroentangled Nonwoven and Regenerated Cellulose: A Comparative Study.
Michael Easson, Andres Villalpando, Brian D. Condon. with increased absorbency. These cellulose materials were tested . A comparative laboratory study. Dr Stephen Thomas Director Surgical Materials Testing Laboratory odour absorbing dressings are currently not included in the list of reimbursable dressings in the United Kingdom and are therefore not available on prescription.
the physical absorbency - a function of the presence of some form of . Absorbent Capacity Analysis: Drager Style Pre-pack Canisters and Fabius® anesthesia workstations.
This comparative study was performed on a Drager Apollo in a controlled environment under accelerated conditions. The table below is a summary of the results in liters of CO 2 Absorbency Test Results Summary - Drager Style Canister .
A Comparative study on Antimicrobial Finish using Pisidium Guajava leaf Extraction on Cotton, Organic Cotton and Bamboo Fabrics Uploaded by antonytechno .