scholarly journals Comparison of Satisfaction Levels between Conventional and Silicone-Adhesive Polyurethane Foam Materials in Patients with Skin Wounds

2021 ◽  
Vol 17 (3) ◽  
pp. 163-168
Author(s):  
Hyun Jeong Ha ◽  
Jun Young Yang ◽  
Chan Woo Kim ◽  
Seong Heum Jeong ◽  
Euna Hwang
Keyword(s):  
Assessment Process ◽  
Survey Study ◽  
Skin Wounds ◽  
Silicone Adhesive ◽  
Pu Foam ◽  
The Mean ◽  
Minor Injuries ◽  
Dressing Change ◽  
Dressing Materials ◽  
Pu Foams

Background: Polyurethane (PU) foam dressing materials have been widely used in commercial wound dressing applications. However, the repeated application of adhesive tapes to keep the foam dressings in place can result in minor injuries to the peri-wound skin. Silicone-adhesive PU foam dressing materials have been developed to prevent such injuries. In this study, the satisfaction levels between conventional and silicone-adhesive PU foams were assessed through a survey of patients and physicians.Methods: A survey study of 140 patients with skin wounds was conducted in a single institution between July 2019 and May 2020. The patients were first treated with either conventional PU foam or silicone-adhesive PU foam, after which they were asked to record their levels of pain, adhesiveness, waterproofness, and satisfaction. At the next visit, dressings of the other material were applied to their wounds, and the same assessment process was repeated at the next dressing change.Results: The silicone-adhesive PU foam dressings demonstrably reduced the levels of dressing-related trauma and pain, compared to that of patients treated with conventional PU foam dressings. The silicone-adhesive PU foam dressings were also associated with substantially higher scores of satisfaction and waterproofness. In comparison, the mean adhesiveness score was superior in the group treated with conventional PU foam dressings, compared to that of the group treated with silicone-adhesive PU foam dressings.Conclusion: Silicone-adhesive PU foam contributed to minimizing pain during dressing change and increasing patient’s comfort. As a result, patients preferred dressing with silicone-adhesive PU foam over conventional PU foam.

scholarly journals POS0733 REAL-LIFE PHYSICAL ACTIVITY IN SLE PATIENTS: ASSOCIATIONS WITH FATIGUE AND QUALITY OF SLEEP

2021 ◽  
Vol 80 (Suppl 1) ◽  
pp. 617.1-617
Author(s):  
H. Wohland ◽  
N. Leuchten ◽  
M. Aringer
Keyword(s):  
Physical Activity ◽  
Sleep Quality ◽  
Disease Activity ◽  
Lupus Erythematosus ◽  
Real Life ◽  
Survey Study ◽  
Cross Sectional Survey ◽  
Cross Sectional ◽  
Fatigue Score ◽  
The Mean

Background:Fatigue is among the top complaints of patients with systemic lupus erythematosus (SLE), but only in part associated with SLE disease activity. Physical activity can help to reduce fatigue and should therefore be recommended to SLE patients. Vice versa, fatigue may arguably lead to reduced physical activity.Objectives:To investigate the extent of physical activity and the perception of fatigue and sleep quality in patients with SLE.Methods:Starting in February 2019, SLE patients were invited to participate in a cross-sectional survey study of fatigue and physical exercise during their routine outpatient clinic visits. Participants filled out a ten-page paper questionnaire focused on physical activity. To evaluate fatigue, we primarily used a 10 cm visual analogue scale (0-100 mm, with 100 meaning most fatigued), but also the FACIT fatigue score (range 0-52). Sleep quality was estimated using grades from 1 (excellent) to 6 (extremely poor).Results:93 SLE patients took part in the study. All patients fulfilled the European League Against Rheumatism/ American College of Rheumatology (EULAR/ACR) 2019 classification criteria for SLE. 91% of the patients were female. Their mean (SD) age was 45.5 (14.3) years and their mean disease duration 12.1 (9.4) years. The mean BMI was 25.2 (5.6). Of all patients, 7.5% had a diagnosis of (secondary) fibromyalgia. The mean fatigue VAS was 32 (27) mm and the mean FACIT fatigue score 35.7 (10.3). As expected, fatigue by VAS and FACIT was correlated (Spearman r=-0.61, p<0.0001). The mean SLEDAI was 1 (1) with a range of 0 to 6. Median glucocorticoid doses were 2 mg prednisolone equivalent, with a range from 0 to 10 mg.Out of 66 patients in payed jobs, 64 (97%) reported details on their working space. One person (2%) worked in a predominanty standing position, 37 (58%) worked in essentially sedentary jobs and 26 (40%) were in positions where they were mildly physically active in part. The mean fatigue VAS was 31 (24) mm for patients with partly active jobs and 27 (30) mm for those in sedentary jobs. Sleep was graded 2.9 (0.9) by those with active and 3.1 (1.3) by those with sedentary jobs.Half of the patients (51%) reported more than one physical recreational activity. 44 (47%) were walking and for five persons (5%) this was the only form of activity. Cycling was reported by 19 patients (20%), 18 of whom also practiced other activities. For transport, 52 (56%) in part chose active modes, such as walking and cycling. Patients who reported any of the above activities showed a mean fatigue VAS of 28 (25) mm, compared to 36 (28) mm in the patient group without a reported activity. Sleep quality was very similar: 3.1 (1.2) and 3.2 (1.1) for more active and more passive patients, respectively.65 (70%) patients regularly practiced sports. Of these, 39 (60%) practiced one kind of sport, 15 (23%) two, 7 (11%) three, and 2 (3%) each four and five kinds of sports. Fatigue VAS of patients practicing sports was 27 (25) mm versus 43 (28) in those who did not (p=0.0075). Sleep quality was 2.9 (1.1) in the sports cohort and 3.5 (1.1) in the no-sports cohort (p=0.0244).Conclusion:A majority of SLE patients in remission or low to moderate disease activity regularly practiced sports, and those doing so reported lesser fatigue and better sleep quality. The absolute values on the fatigue VAS were in a moderate range that made fatigue as the main cause of not performing sports rather unlikely for most patients.Disclosure of Interests:Helena Wohland: None declared, Nicolai Leuchten Speakers bureau: AbbVie, Janssen, Novartis, Roche, UCB, Consultant of: AbbVie, Janssen, Novartis, Roche, Martin Aringer Speakers bureau: AbbVie, Astra Zeneca, BMS, Boehringer Ingelheim, Chugai, Gilead, GSK, HEXAL, Lilly, MSD, Novartis, Pfizer, Roche, Sanofi, UCB, Consultant of: AbbVie, Astra Zeneca, BMS, Boehringer Ingelheim, GSK, Lilly, MSD, Roche, Sanofi, UCB

Efficacy of PU foam materials for scientific investigation in footwear research

2016 ◽  
Vol 36 (3) ◽  
pp. 253-259 ◽  
Author(s):  
Selvaraj Mathivanan ◽  
Ranganathan Mohan ◽  
Bhabendra Nath Das
Keyword(s):  
Dynamic Condition ◽  
High Body Mass Index ◽  
Physical Characteristics ◽  
Foot And Ankle ◽  
Foam Material ◽  
Compression Set ◽  
Therapeutic Benefits ◽  
Pu Foam ◽  
Pu Foams ◽  
High Bmi

Abstract People across the world are primarily concerned with the importance of inserts in footwear in terms of their effectiveness to accomplish therapeutic benefits. Body weight has been implicated as a factor in plantar heel pain, and foot orthoses are commonly used in its conservative treatment and are helpful in reducing symptoms of strain in the fascia during standing and ambulation. It is necessary to investigate the effectiveness of footwear inserts and their impact especially for people with high body mass index (BMI). Hence, research on polyurethane (PU) foams is warranted to identify an ideal material that provides comfort for high-BMI individuals. This article presents details on the physical characteristics of PU foam and its efficacy on functional performances as footwear inserts. PU foam materials have been assessed on various physical characteristics such as density, hardness, compression set followed by resilience, and cushioning behaviors. Of the four densities evaluated, D120 has the highest resilience on static and dynamic conditions. The cushion energy behaviors with respect to walking/running on static and dynamic condition were superior, as they possess better cushioning performance on footwear applications. Hence, the D120 PU foam material is concluded to be the best material for footwear insert for alleviating foot and ankle pain-related problems and for providing therapeutic benefits to high-BMI individuals.

scholarly journals Vocabulary Learning Strategies Employed by Gamers In The “Simulation Video Game”

2018 ◽  
Vol 2 (1) ◽  
pp. 22
Author(s):  
Moh. Hasbullah Isnaini ◽  
Resda Cintami Laksana
Keyword(s):  
Learning Strategies ◽  
Language Learners ◽  
Video Game ◽  
Vocabulary Learning ◽  
Cognitive Strategy ◽  
Survey Study ◽  
Vocabulary Strategies ◽  
Vocabulary Learning Strategies ◽  
The Social ◽  
The Mean

<p class="abstract"><span lang="EN-AU">This study aims at investigating the phenomena of vocabulary strategies used by gamers of the Harvest Moon game. A survey study was conducted to see the most and the least frequent strategies used by the gamers while playing the game. To gain the data, the researcher distributed a questionnare which is adapted from the Schmitt’s taxonomy of VLS namely determination, social (discovery), social (consolidation), cognitive, memory, and metacognitive strategies. The result of the present study shows that the most frequent strategy used is cognitive strategy, the mean is 2.28 which indicates that most of the gamers use this strategy to improve their vocabulary learning. Meanwhile, the least strategy used is the social startegy since the mean score is 1.07 which suggests that the gamers do not really seek help from friends when they have problems with vocabulary. Taking the result of the study into the learning of vocabulary, it is suggested that teachers provide language learners with the cognitive strategy to accomodate their vocabulary learning, so that they can enhance their vocabulary.</span></p>

SPORT WORKOUT AND PARTICIPATION ASSOCIATED MENSTRUAL PROBLEMS AMONG ADOLESCENT ATHLETES OF ALIGARH

2019 ◽  
Vol 2 ◽  
pp. 12-22
Author(s):  
Dr. Abdul Roof Rather ◽  
Nazia Khan ◽  
Abdul Kaisar
Keyword(s):  
Medical Practitioner ◽  
Sports Participation ◽  
Study Data ◽  
Survey Study ◽  
Adolescent Athletes ◽  
Menstrual Cycles ◽  
The Social ◽  
The Mean ◽  
Age Of Menarche ◽  
Structured Questionnaire

Background: Menstruation and related problems are issues of great importance for adolescent athletes. The concern becomes more crucial when it comes to the sports participation of athletes. The social and cultural setup in India leaves very less space for adolescent athletes to talk freely about menstruation. This raises a great concern regarding menstruation from health perspective. Objectives: To study sport workout and participation associated menstrual problems among adolescent athletes. Materials and Methods: A questionnaire based survey study was carried out during open sports meet 2017 in Aligarh, India. A sample of 158 girl athletes participated in this study. Data was collected using a 23-item semi structured questionnaire. Data collection lasted for two weeks and analysis was done using descriptive statistics, percentages and proportions. Results: Showed that the mean age of menarche was 13.5 years. 37.19% had irregular menstrual cycle. 73.23% (20.11% severe and 53.12% mild) athletes had abdominal pain and cramping during menstruation. While, mere, 7.98% athletes seek any medical practitioner or OB-GYN about their menstruation problems. 56.97% athletes think that sports training and participation effect their menstrual periods. 49.78% reported that diet provided to them was not well balanced and 59.09% reported that imbalanced diet had caused many problems like that of irregular menstrual periods, dizziness, sleeping difficulties, mood swings, constipation and feelings of depression to them. Conclusion: The knowledge of the participants of this study about the menstruation and related problems was very weak and did not know the safe maintenance procedures. They also have the ill faith that sports participation hampers the menstrual periods. Besides this the significant weight loss could be due to training load and dietary imbalances. This seems to have had played major role in the irregularity of the menstrual cycles.

scholarly journals Recovery of Flexible Polyurethane Foam Waste for Efficient Reuse in Industrial Formulations

Polymers ◽  
2020 ◽  
Vol 12 (7) ◽  
pp. 1533 ◽  
Author(s):  
Gabriel Kiss ◽  
Gerlinde Rusu ◽  
Francisc Peter ◽  
Ionuț Tănase ◽  
Geza Bandur
Keyword(s):  
Polyurethane Foam ◽  
Atmospheric Pressure ◽  
Air Permeability ◽  
Hydroxyl Number ◽  
Pu Foam ◽  
Flexible Polyurethane Foam ◽  
Flexible Polyurethane ◽  
The Relationship ◽  
Pu Foams ◽  
Glycolysis Process

Ester polyurethane (PU) foam waste was reacted at atmospheric pressure in an autoclave and using microwaves with diethylene glycol (DEG) at different PU/DEG ratios in the presence of diethanolamine as a catalyst to find the glycolysis conditions that allow for the improved recovery of the PU foam waste and enable the recycling of the whole glycolysis product in foam formulations suitable for industrial application. The recycled polyol was characterized by dynamic viscosity, hydroxyl number, water content, and density, while thermal stability was assessed using thermogravimetric analysis. In the PU foam formulation, 1% and 5% of the glycolyzed material was reused. The relationship between the reuse level of the recycled polyol and the physical properties of the foam was thoroughly investigated. It was observed that both hardness and air flow decreased with increasing recycled polyol content, particularly for the polyester type foam, while tensile strength and compression strength increased. Depending on the amount of recycled polyol and catalyst used, polyether-based foams could be obtained with a low air permeability, needed in special applications as sealed foams, or with higher air permeability desirable for comfort PU foams. The results open the way for further optimization studies of industrial polyurethane foam formulations using a glycolysis process without any separation stage.

Compression Test and Energy Absorption of Polyurethane/Multi Walled Carbon Nanotubes Foam Composites

2015 ◽  
Vol 819 ◽  
pp. 246-250 ◽  
Author(s):  
A.A. Sinar ◽  
Zainuddin Firuz ◽  
M.A. Nur Azni ◽  
A.Z. Nur Hidayah ◽  
Md Akil Hazizan ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Compressive Strength ◽  
Energy Absorption ◽  
Palm Oil ◽  
Strength Properties ◽  
Pu Foam ◽  
Methylene Diphenyl Diisocyanate ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes ◽  
Pu Foams

This paper describes the effect of multi walled carbon nanotubes (MWCNTs) on the properties, especially the strength properties of rigid polyurethane (PU) foams produced from palm oil based polyol (POP) and methylene diphenyl diisocyanate (MDI). The foam composites in the ratio of 1:1.1 (wt. %) mixed at speed 2000 rpm. The addition of MWCNTs into PU foam are varies from 0 wt. % to 3 wt. %. The properties evaluated were compressive strength, density and energy absorption. Compressive strength of PU foam composites with 0.5% of MWCNTs showed the highest value 1.162 MPa of compressive strength compared to other foam composites. It was proved by modeling displacement nodal magnitude using NX Software (version 8.5). The density was increased 15.69 % with addition of 0.5 % MWCNTs into the PU foam. Increasing the amount of MWCNTs in PU foam was found to improve the energy absorption from 22.89 J for pure PU to 24.53 J for foam composites with 3 % MWCNTs.

Soy Protein Based Biodegradable Flexible Polyurethane Foam

2010 ◽  
Vol 152-153 ◽  
pp. 1862-1865 ◽  
Author(s):  
Guang Heng Wang ◽  
An Ning Zhou
Keyword(s):  
Soy Protein ◽  
Soy Protein Isolate ◽  
Protein Isolate ◽  
Compression Set ◽  
Pu Foam ◽  
Isocyanate Index ◽  
Biodegradable Polyurethane ◽  
Flexible Polyurethane ◽  
Pu Foams ◽  
Flexible Pu Foam

Soy protein based biodegradable polyurethane (PU) foams were prepared by incorporating soy protein isolate (SPI) into flexible PU foam. The effects SPI content and isocyanate index on the density, resilience, compression set, and biodegradability of the soy protein based PU foams were investigated. The results showed that, soy protein enhanced the compression set, resilience, and biodegradability of PU foams, but increased the density. Furthermore, soy protein can increase open cell proportion in the soy protein based flexible PU foams, and then regulate their properties. The density and compression set value of the soy protein based PU foams decreased with increase in isocyanate index, while the resilience increased. The biodegradability of soy protein based flexible PU foam makes it a prospective material for disposable usage.

scholarly journals Rigid Polyurethane Foam Thermal Insulation Protected with Mineral Intumescent Mat

2014 ◽  
Vol 14 (4) ◽  
pp. 259-269 ◽  
Author(s):  
Mikelis Kirpluks ◽  
Ugis Cabulis ◽  
Viesturs Zeltins ◽  
Laura Stiebra ◽  
Andris Avots
Keyword(s):  
Thermal Conductivity ◽  
Thermal Insulation ◽  
Flame Retardants ◽  
Health Hazard ◽  
Expandable Graphite ◽  
Main Concern ◽  
Insulation Material ◽  
Pu Foam ◽  
Fibre Products ◽  
Pu Foams

Abstract One of the biggest disadvantages of rigid polyurethane (PU) foams is its low thermal resistance, high flammability and high smoke production. Greatest advantage of this thermal insulation material is its low thermal conductivity (λ), which at 18-28 mW/(m•K) is superior to other materials. To lower the flammability of PU foams, different flame retardants (FR) are used. Usually, industrially viable are halogenated liquid FRs but recent trends in EU regulations show that they are not desirable any more. Main concern is toxicity of smoke and health hazard form volatiles in PU foam materials. Development of intumescent passive fire protection for foam materials would answer problems with flammability without using halogenated FRs. It is possible to add expandable graphite (EG) into PU foam structure but this increases the thermal conductivity greatly. Thus, the main advantage of PU foam is lost. To decrease the flammability of PU foams, three different contents 3%; 9% and 15% of EG were added to PU foam formulation. Sample with 15% of EG increased λ of PU foam from 24.0 to 30.0 mW/(m•K). This paper describes the study where PU foam developed from renewable resources is protected with thermally expandable intumescent mat from Technical Fibre Products Ltd. (TFP) as an alternative to EG added into PU material. TFP produces range of mineral fibre mats with EG that produce passive fire barrier. Two type mats were used to develop sandwich-type PU foams. Also, synergy effect of non-halogenated FR, dimethyl propyl phosphate and EG was studied. Flammability of developed materials was assessed using Cone Calorimeter equipment. Density, thermal conductivity, compression strength and modulus of elasticity were tested for developed PU foams. PU foam morphology was assessed from scanning electron microscopy images.

scholarly journals Study on Knowledge and Practices of Ayurvedic Preventive Measures for Respiratory Tract Infections

2021 ◽  
pp. 29-37
Author(s):  
B. L. Edirisinghe ◽  
W. M. S. S. K. Kulathunga
Keyword(s):  
Respiratory Tract ◽  
Respiratory Tract Infections ◽  
Preventive Measures ◽  
Good Practice ◽  
World Health ◽  
Survey Study ◽  
Chronic Obstructive ◽  
Cross Sectional ◽  
The Mean ◽  
Tract Infections

Respiratory diseases have become world health burden. It has been estimated that 65 million people have moderate severe chronic obstructive pulmonary diseases from which about 3 million die each year. Objective of this survey study was to assess knowledge and practice of Intern medical officers on Ayurvedic preventive measures for managing respiratory tract infectious diseases. A cross sectional descriptive study was carried out among the Intern Medical Officers during their training program. 85 respondents out of 150 were assessed for their knowledge and practices on Ayurvedic preventive measures for Respiratory tract infections by using pre-structured questionnaire. Among the sampled students, most of them were female 92.9% (79) and unmarried 51.8% (44). The mean age and the standard deviation of the respondents were 28.25 + 0.815 years. There were 41(48.2%) Intern medical students with good knowledge, 42(49.4%) were with satisfactory knowledge and 2.4% of the study group was having the little knowledge. Most of the respondents 56(65.9%) were doing good practice on preventing RTI and 29 (34.1%) respondents were doing bad practice. Overall the respondents have good practice on prevention of RTI with the mean score of 19.9 + 2.589.

scholarly journals Artificial Intelligence and Its Effect on Dermatologists’ Accuracy in Dermoscopic Melanoma Image Classification: Web-Based Survey Study (Preprint)

2020 ◽  
Author(s):  
Roman C Maron ◽  
Jochen S Utikal ◽  
Achim Hekler ◽  
Axel Hauschild ◽  
Elke Sattler ◽  
...  
Keyword(s):  
Artificial Intelligence ◽  
Personal Experience ◽  
Real Life ◽  
Survey Study ◽  
Final Decision ◽  
Web Based ◽  
Additional Information ◽  
Control Step ◽  
Average Confidence ◽  
The Mean

BACKGROUND Early detection of melanoma can be lifesaving but this remains a challenge. Recent diagnostic studies have revealed the superiority of artificial intelligence (AI) in classifying dermoscopic images of melanoma and nevi, concluding that these algorithms should assist a dermatologist’s diagnoses. OBJECTIVE The aim of this study was to investigate whether AI support improves the accuracy and overall diagnostic performance of dermatologists in the dichotomous image–based discrimination between melanoma and nevus. METHODS Twelve board-certified dermatologists were presented disjoint sets of 100 unique dermoscopic images of melanomas and nevi (total of 1200 unique images), and they had to classify the images based on personal experience alone (part I) and with the support of a trained convolutional neural network (CNN, part II). Additionally, dermatologists were asked to rate their confidence in their final decision for each image. RESULTS While the mean specificity of the dermatologists based on personal experience alone remained almost unchanged (70.6% vs 72.4%; <i>P</i>=.54) with AI support, the mean sensitivity and mean accuracy increased significantly (59.4% vs 74.6%; <i>P</i>=.003 and 65.0% vs 73.6%; <i>P</i>=.002, respectively) with AI support. Out of the 10% (10/94; 95% CI 8.4%-11.8%) of cases where dermatologists were correct and AI was incorrect, dermatologists on average changed to the incorrect answer for 39% (4/10; 95% CI 23.2%-55.6%) of cases. When dermatologists were incorrect and AI was correct (25/94, 27%; 95% CI 24.0%-30.1%), dermatologists changed their answers to the correct answer for 46% (11/25; 95% CI 33.1%-58.4%) of cases. Additionally, the dermatologists’ average confidence in their decisions increased when the CNN confirmed their decision and decreased when the CNN disagreed, even when the dermatologists were correct. Reported values are based on the mean of all participants. Whenever absolute values are shown, the denominator and numerator are approximations as every dermatologist ended up rating a varying number of images due to a quality control step. CONCLUSIONS The findings of our study show that AI support can improve the overall accuracy of the dermatologists in the dichotomous image–based discrimination between melanoma and nevus. This supports the argument for AI-based tools to aid clinicians in skin lesion classification and provides a rationale for studies of such classifiers in real-life settings, wherein clinicians can integrate additional information such as patient age and medical history into their decisions.

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