Protective Clothing Research Articles

Exploring Preventive Measures and Disease Dynamics of Hereditary Polymorphic Light Eruption in American Indian Children

Hereditary polymorphic light eruption (HPLE) is a condition related to polymorphic light eruption (PLE). Unlike PLE, HPLE is unique to American Indian populations demonstrating autosomal dominant inheritance pattern with incomplete penetrance. Affected individuals possess hypersensitivity to long UV radiation, which heightens the risk for skin damage. Onset is typically childhood and disease severity results in complications including psychosocial trauma, streptococcal pyoderma, and glomerulonephritis. HPLE can be difficult to diagnose due to its overlapping qualities with other conditions, underscoring the importance of accurate diagnosis and management. Preventive measures play critical roles in mitigating disease occurrence and complications. Literature analysis of five articles using PubMed and Google was conducted to understand HPLE among the Native American community, particularly children. Search terms included hereditary polymorphic light eruption, Native Americans, American Indians, polymorphic light eruption, actinic prurigo, UV toxicity, and photosensitivity. Literature delineated the disease process of HPLE and preventive measures. Studies revealed a higher incidence among children/adolescents who presented with rashes within two hours of sun exposure. Rash severity increased as seasons progressed to summertime. It is imperative that affected individuals utilize broad spectrum coverage sunscreen, covering UVA and UVB rays. Other measures proven to be effective include protective clothing, limiting time outdoors during peak sun hours, and using specially formulated lip balm. HPLE creates a unique challenge among American Indian populations necessitating increased awareness and educational strategies to minimize and avoid complications. Providing education on prevention and actively implementing measures can help decrease the complications of HPLE and increase quality of life.

Three-dimensional moisture transport fabric for enhanced moisture management in protective clothing

Effective moisture management within the microenvironment of protective clothing is crucial for maintaining garment performance and wearer comfort. The inherent properties of fabrics and the structural of protective garments often hinder the discharge of sweat to the external environment. Here, we present a novel 3D moisture transport fabric, engineered with gradient wetting properties along both the thickness and length dimensions. This fabric can transport moisture from the inner to the outer surface within approximately 5 s, achieving a maximum accumulative one-way transport capability of 1189.1 in the thickness direction. Additionally, by further directing moisture along the constructed wetting gradient on the fabric's outer surface, the moisture diffusion distance in the gradient direction was up to 2.6 times greater than in other directions. This approach will enhance moisture transport and management within protective clothing and can be further extended to the development of materials for oil-water separation, wound dressings, flexible microfluidics, and fuel cell membranes.

Ice vests extend physiological work time while wearing explosive ordnance disposal protective clothing in hot and humid conditions

BackgroundExplosive ordnance disposal (EOD) technicians may be required to work in hot, humid environments while wearing heavy protective clothing. We investigated the ability of an ice vest to attenuate physiological strain and subsequently extend work tolerance. MethodsEight male participants (24.3 ± 4.1 yr, 51.9 ± 4.6 mL kg−1 min−1) walked (4.5 km h−1) in simulated hot and humid conditions (35 °C; 50% relative humidity). Participants wore either an EOD suit (CON) or EOD and ice vest (IV). Heart rate, core and skin temperature were recorded continuously. ResultsParticipants walked longer in IV compared to CON (8.1 ± 7.4 min, p < .05). Over 90% of trials were terminated based on participants reaching 90% of their maximum heart rate. IV resulted in cooled skin (p < .001) and a physiologically negligible change in core temperature (p < .001). A condition by time interaction was identified for heart rate (p < .001), with a lower rate of rise in the IV condition. ConclusionsThe cardiovascular inefficiency that limited performance was attenuated in the IV condition. The ice vest facilitated heat loss from the periphery; thus, the observed reduction in heart rate may reflect the preservation of central blood volume. The results identify the efficiency of a simple, inexpensive ice vest to assist EOD technicians working in the heat.

Advances in Protective Clothing Research Meeting the Challenges in the Changing World

The world keeps changing, and the changes are becoming quicker with technological development [...]

Innovation in prevention of poison oak contact dermatitis.

Poison oak-induced contact dermatitis poses a significant challenge due to its urushiol oil-induced allergic reactions. Conventional preventive measures like avoidance and post-exposure cleansing are often impractical, necessitating innovative strategies. This comprehensive review explores emerging technologies and formulations for preventing poison oak dermatitis. Literature search via PubMed and Covidence identified 13 relevant studies, with six discussing preventive measures. Barrier methods, including occlusive creams and protective clothing, showed promise in reducing dermatitis risk. Immunotherapy, although investigated, requires further development. Complete avoidance, while effective, is often impractical. The complexity of poison oak management underscores the need for ongoing research to develop more effective preventive measures. This review highlights the current landscape, identifies gaps in knowledge, and emphasizes the importance of continued research for improved prevention and management of poison oak-induced dermatitis.

Development and performance evaluation of medical radiation-reducing creams using eco-friendly radiation-shielding composites

To ensure the safety of medical personnel in healthcare organizations, radiation-shielding materials like protective clothing are used to protect against low-dose radiation, such as scattered rays. The extremities, particularly the hands, are the most exposed to radiation. New materials that can be directly coated onto the skin would be more cost-effective, efficient, and convenient than gloves. We developed protective creams using eco-friendly shielding materials, including barium sulfate, bismuth oxide, and ytterbium oxide, to avoid harmful effects of heavy metals like lead, and tested their skin-protective effects. Particularly, the radiation-shielding effect of ytterbium oxide was compared with that of the other materials. As shielding material dispersion and layer thickness greatly affect the efficacy of radiation-shielding creams, we assessed dispersion in terms of the weight percentage (wt%). The effective radiation energy was reduced by 20% with a 1.0-mm increase in cream thickness. Ytterbium oxide had a higher radiation-shielding rate than the other two materials. A 28% difference in protective effect was observed with varying wt%, and the 45 wt% cream at 63.4 keV radiation achieved a 61.3% reduction rate. Higher content led to a more stable incident energy-reducing effect. In conclusion, ytterbium oxide shows potential as a radiation-shielding material for creams.

Toward the design of highly waterproof‐breathable electrospun nanofiber membrane based on π–π interactions

AbstractWaterproof and breathable nanofiber membranes are highly desirable for protective textiles; however, the practical application of nanofiber membranes is limited by fluorine‐containing material addition or complicated post‐treatment. Herein, we reported unique fluorine‐free polyurethane (PU)/poly(styrene‐b‐s‐b‐styrene) (SBS) nanofiber membranes by a facile direct electrospinning. Owing to the addition of SBS, the hydrophobicity, waterproofness, and mechanical properties of PU nanofiber membranes were dramatically enhanced. Furthermore, the highly interconnective channels were constructed after the introduction of SBS into the PU nanofiber membrane, which resulted in enhanced breathability. The enhancement in the comprehensive performance of the PU/SBS composite nanofiber membrane might be attributed to the π–π interactions between SBS and PU. By adjusting the concentration of the PU/SBS, fluorine‐free PU/SBS nanofiber membranes were optimized systematically, exhibiting satisfactory waterproofness (hydrostatic pressure, 47.4 kPa), acceptable breathability (water vapor transition rate, 5.6 kg m−2 d−1), and outstanding mechanical properties (breaking strength, 5.7 MPa; breaking elongation, 387.9%). The PU/SBS‐14 nanofiber membrane is ideal for wearable textiles, especially for outdoor protective clothing, wound dressings, and medical gowns.

Assessment and Modeling of Workplace Exposure to Solar Ultraviolet Radiation in Makurdi, Nigeria

Solar radiation though beneficial to life but the harmful effects of over exposure especially in Nigeria has been neglected and its measurement/prediction has received negligible attention in the literature. This study measured and modeled workplace exposure to solar ultraviolet radiation (SUVR) in Makurdi, Benue State, Nigeria. Digital broadband meter was used to measure solar power density in three site while polymer Polysolphone dosimeters were fitted on a human manikin and placed in the sun between 10:00 am- 4:00pm (6 hours) to quantify the amount of Solar UVR absorbed by three occupational workers (Traders, Fishermen and Staff/Students). Five dosimeters were deployed in each of the three sites for calibration to measure UV absorbance in J/m2 while seven in each site were used for body parts. UV/VIS-spectrophotometer was handily used to measure both post and pre-absorbance and the UV exposures were calculated. The UV index was also calculated. Result shows that, head top had the highest exposure values 7.19kJ/m2, 6.51kJ/m2 and 7.00kJ/m2, while the least values was under cloth cover 2.47kJ/m2, 2.08kJ/m2 and 2.20kJ/m2 for traders, fishermen and staff/students respectively. Similarly, the calculated cumulative exposures were 3289.36kJ/m2, 497.82kJ/m2 and 1515.60kJ/m2 at the market square, river bank and the campus respectively. These values were higher than international ICNIRP average value 30J/m2. UV index at market square was 9 (media graphic colour purple), while at river bank and BSU campus was 8 (media graphic colour reddish). High mean irradiant values with high UV index indicates high risk of harm from unprotected sun exposure. Therefore, use of sun protective clothing is recommended and reduce time in the sun especially between 1:00pm and 2:00pm to prevent over exposure that will lead to serious harmful effects especially at the market place.

Upper- vs. Whole-Body Cooling During Exercise with Thermal Protective Clothing in the Heat.

INTRODUCTION: Firefighters operating in hot environments face challenges from protective garments that restrict heat dissipation, resulting in increased core temperature, thermal discomfort, and performance decline. Cooling vests represent a viable solution. The study aim was to compare effectiveness of the same amount of cooling power to the upper body (UB) or whole body (WB) in alleviating thermoregulatory and physiological stress, enhancing cognitive function, and reducing ratings of thermal discomfort and exertion, during 60 min of exercise in a hot environment (40°C, 40% relative humidity) while wearing firefighter turnout gear.METHODS: Eight healthy individuals (27.5 ± 3 y) participated in three conditions with either no cooling (Control) or active cooling with a liquid perfused shirt (UB cooling), or with a liquid perfused shirt and pants (WB cooling). In each trial, subjects performed three sets of 15 min of stepping (20 steps ⋅ min-1) and 5 min of rest.RESULTS: Both cooling strategies were beneficial compared to having no cooling at all. Subjects could only complete two exercise bouts during Control, but they completed all three bouts with active cooling. WB cooling provided an advantage over UB cooling for core and skin temperature, and thermal comfort and sensation. The advantage in minimizing the increase in core temperature was only evident during the third exercise bout.DISCUSSION: Active cooling is advantageous under these conditions. WB cooling provided some benefits vs UB cooling during heavy intensity exercise; however, it is uncertain whether these benefits would be observed during light-to-moderate exercise, which more likely reflects an actual firefighting scenario.Mansouri F, Talebian Nia M, Villar R, Cornish SM, Giesbrecht GG. Upper- vs. whole-body cooling during exercise with thermal protective clothing in the heat. Aerosp Med Hum Perform. 2024; 95(9):659-666.

Attaining Sustainable development by using Treatment with Titanium Dioxide to produce protective Clothing fabrics for Workers in the field of Self-Cleaning Inks

Attaining Sustainable development by using Treatment with Titanium Dioxide to produce protective Clothing fabrics for Workers in the field of Self-Cleaning Inks

Thermal Protection Performance Evaluation Based on Structural Composition Changes of the Intermediate-Layer Fabric in Thermal Protective Clothing

This study is a follow-up to ‘Research on the Development of Fabrics for Industrial and Firefighting Protective Clothing and Comparison of Flame Retardant Performance,’ focusing on the thermal protection performance of clothing designed to protect the human body from high temperatures and heat in industrial settings and fire scenarios. In this study, additional thermal protection performance tests were conducted to provide a more comprehensive analysis. Aside from the flame-retardant performance evaluation conducted according to ISO 15025 on 12 base fabrics with different yarn compositions, the following thermal performance studies were carried out: radiant heat protection (ISO 9151), convective heat protection (ISO 6942), and combined radiant and convective heat protection (ISO 17492). The heat-transfer index of the intermediate layer, which plays a crucial role in the thermal protection performance of thermal clothing, was also assessed. The results indicated that although most of the 12 base fabrics offered a certain level of thermal protection, some of them melted and failed to provide adequate thermal protection.

Evaluation of Wearability of Army CBRN Protective Clothing with Different Materials for Inner Layers: Comparisons between Activated Carbon Beads and Activated Carbon Fibers

Evaluation of Wearability of Army CBRN Protective Clothing with Different Materials for Inner Layers: Comparisons between Activated Carbon Beads and Activated Carbon Fibers

PBAT/PLA-Based Electrospun Nanofibrous Protective Clothes with Superhydrophobicity, Permeability, and Thermal Insulation Characteristics for Individuals with Disabilities.

This study presents the development of multifunctional protective clothing for disabled individuals using PBAT/PLA biopolymeric-based electrospun nanofibrous membranes. The fabric consists of a superhydrophobic electrospun nanofibrous cloth reinforced with silica nanoparticles. The resulting nanofiber membranes were characterized using FE-SEM, a CA goniometer, breathability and hydrostatic pressure resistance tests, UV-vis spectroscopy, thermal infrared photography, tensile tests, and nanoindentation. The results demonstrated the integration of superhydrophobicity, breathability, and mechanical improvements in the protective clothing. The nanofibrous porous structure of the fabric allowed breathability, while the silica nanoparticles acted as an effective infrared reflector to keep the wearer cool on hot days. The fabric's multifunctional properties make it suitable for various products, such as outdoor clothing and accessories for individuals with disabilities. This study highlights the importance of selecting appropriate textiles for protective clothing and the challenges faced by disabled individuals in terms of mobility, eating, and dressing. The innovative and purposeful design of this multifunctional protective clothing aimed to enrich the lives of individuals with disabilities.

Mental Health Effects of COVID-19 Among Health Care Providers: A Case Study of Kalulushi General Hospital in Kalulushi District, Zambia

Coronavirus disease 2019 is an infectious disease which was first identified in Wuhan a City in the Peoples Republic of China in December 2019. The aim of this study was to establish the mental health effects of COVID 19 on the frontline health care providers at Kalulushi General Hospital in Kalulushi district of Zambia. A descriptive cross-sectional study was employed to assess the mental health effects of COVID 19 on the frontline health care providers at Kalulushi General Hospital in Zambia. The study used simple random sampling technique to select 122 respondents to participate in the study. Data was collected from study participants using structured questionnaire. The collected data was analyzed using SPSS version 25 and MS excel and was presented using tables, bar charts and pie charts. Multivariate logistic regression analysis was used to examine the relationships between socio-demographic characteristics and mental health effects of COVID-19 parameters. The ethical approval was gotten from Lusaka Apex Medical University Biomedical Research Ethics Committee, Kalulushi General Hospital and Kalulushi District Health Office respectively. The study revealed that, most of the respondents (31%) were afraid of contracting COVID-19, while 27% of study participants claimed that COVID 19 was a propaganda and that no one knew when it would end. The study also found that, a small proportion of study participants reported a decline in work morale (17%), likely associated with witnessing numerous deaths (19%) and the added stress of inadequate personal protective equipment (PPE) experienced by 15%. The study further demonstrated that 58% of the respondents accepted that working in a COVID-19 environment affected their mental health while 42% of the respondents did not accept that working in the COVID-19 environment did affect mental health of frontline healthcare providers. The study further revealed that, most of the respondents were using handwashing or sanitizers, facemasks and protective clothing (27%) to cope with COVID-19 pandemic. The study also showed that, a few respondents were practicing social distancing (22%), and having healthy diet (19%) in order to cope with COVID-19. Marital status and religion were found to have significant association with copying strategies of frontline healthcare providers against COVID-19 pandemic at Kalulushi General Hospital in Kalulushi District of Zambia (P &amp;lt; 0.05). WHO, CDC, and Zambian Ministry of Health should prioritize implementing Critical Incident Stress Management protocols, develop culturally sensitive mobile applications to offer self-guided interventions, and promote healthy coping mechanisms among frontline healthcare providers.

Anthropometric Fit Test Methods: Three Case Studies

There is not a universally accepted fit test procedure because test protocols need to be customized for specific products or research questions. A fit test protocol can vary significantly based on the product tested, but often includes these steps: define fit criteria, select anthropometric dimensions of interest, perform testing, collect quantitative and qualitative feedback, identify design recommendations, and develop or refine a sizing chart. To illustrate general approaches to human fit testing, case studies of fit tests are described for three different product types: a multi-layered protective clothing ensemble, a therapeutic airway clearance vest, and a patient transfer sling.

Psychosocial Determinants of Lyme Disease Preventive Behavior Among Outdoor Recreationists

The incidence of Lyme disease (LD) has grown over time despite extensive awareness campaigns of disease risk. While previous research has explored public knowledge, perceptions, and attitudes toward tick-borne diseases, there is minimal research in understanding preventive behavior among individuals frequently engaging in outdoor recreation. This study addresses this gap by investigating the perceptions of LD preventive behavior, focusing on psychosocial factors influencing behavior. Utilizing an integrative framework incorporating the Health Belief Model and Social Cognitive Theory, we examined outdoor recreationist performance of three key preventive behaviors: tick checks, tick repellent use, and protective clothing. Data were collected through intercept surveys at Bradbury Mountain State Park (Maine, US). Findings indicate that tick-related knowledge and experience have a limited impact on preventive behavior, while efficacy beliefs and perceived benefits significantly influence behavior. In this paper we discuss the implications of these factors to both theory and practice in LD prevention studies.

Performance analysis of fire protective clothing: a review

Firefighters in such serious environments (i.e., hazardous flames and radiant heat, high air temperatures, hot chemicals and liquids) must wear fire protective clothing during fire extinguishing and rescue operations. Many studies in the field of fire protective clothing have been conducted to evaluate the protective, mechanical and comfort performance of fire protective clothing. A comprehensive review of the literature has been undertaken to provide a better understanding of single-layer and multilayer fire protective clothing with protective, mechanical and comfort performance. Factors affecting the durability of protective clothing in the light of their expected retirement age and a number of significant standards for laboratory and manikin testing are discussed. The comfort of wearing clothing is another aspect that needs special consideration when designing a multilayered fire protective suit. A number of emerging technologies have been outlined to address the various challenges of the present day.

Thermoregulatory demands of épée fencing during competition

ABSTRACT The International Olympic Committee recently introduced a consensus statement on recommendations for outdoor sports in the heat. However, indoor sports such as fencing whereby athletes are required to wear full body protective clothing when competing have received no recommendations. Such scenarios could cause high thermoregulatory demands particularly as competition progresses into latter rounds (direct elimination; DE). Therefore, the aim of this study was to determine the thermoregulatory responses of épée fencing across different phases of competition (Poule and DE). Seven well-trained fencers competed in a simulated competition comprising of seven Poule and seven DE fights. Gastrointestinal temperature (Tgast), skin temperature (Tskin), mask temperature (Tmask), heart rate (HR), thermal sensation, differentiated ratings of perceived exertion (RPE), and movement characteristics were collected for all fights. There was a moderate thermoregulatory demand during Poule rounds shown by post-fight Tgast (38.1 ± 0.4°C), Tskin (34.4 ± 0.7°C), and thermal sensation ratings (6 ± 1). A greater thermoregulatory and perceptual demand observed during DE rounds evidenced by Tgast (38.7 ± 0.3°C post fight), Tskin (35.1 ± 0.7°C), thermal sensation (7 ± 1), increases in Tmask across DE rounds (~1.1°C), and RPE (~15). Furthermore, a significant (p < 0.05) reduction in distance covered from DE 1 to DE 7 suggests a thermoregulatory based impact on performance. This is the first study demonstrating the thermoregulatory demands of épée fencing, highlighting the need to develop heat exertion guidelines within fencing.

Permeable Self-Association of Metal-Organic Framework 808/Ag-Based Fiber Membrane for Broad-Spectrum and Highly Efficient Degradation of Biological and Chemical War Agents.

The threat posed by biological and chemical warfare agents (BCWA) to national security, the environment, and personal health underscores the need for innovative chemical protective clothing. To address the limitations of conventional activated carbon materials, which are prone to falling off and adsorption saturation, an efficient self-association approach was introduced. In this study, we proposed the immobilization of metal-organic framework (MOF) 808 and Ag nanoparticles onto a polypropylene (PP) fiber membrane using a rapid self-association method facilitated by chitosan (CS). The MOF 808/Ag-based (PP-CS/808-Ag) fiber membrane demonstrated exceptional degradation efficiency, achieving a remarkable rate of t1/2 within 2 h for the mustard simulant 2-chloroethyl ethyl sulfide (2-CEES) and a rate of t1/2 = 4.12 min for the G-series simulant dimethyl 4-nitrophenylphosphate (DMNP). A theoretical computational model was developed to determine the overall reaction mechanism, and it was verified that MOF 808 and Ag nanoparticles were mainly involved in the hydrolysis process against 2-CEES and DMNP. The PP-CS/808-Ag composite fiber film was prepared as the core layer, and the fracture strength, bending resistance, and moisture permeability were better than those specified by many countries for biochemical protective clothing, showing that it has a broad application prospect in developing a generation of broad-spectrum bioprotective clothing.

Penetration Thresholds of Porcine Limbs for Low Sectional Density Projectiles in High-Rate Impact.

With similar prevalence to injuries from fires, stings, and natural disasters, soft tissue injuries may occur from fireworks, industrial accidents, or other explosives. Surgeons are less familiar with treating high-velocity penetration from small debris, which may increase the chance of infection and subsequent fatality. Penetration risk curves have been developed to predict V50, the velocity with 50% probability of penetration, for various sized projectiles. However, there has been limited research using nonmetallic materials to achieve lower density projectiles less than 1 g cm-2, such as sand or rocks. To emulate the size and density of these energized particles, 14 ball bearings of stainless steel, silicon nitride, or Delrin acetal plastic ranging from 1.59 mm (1/16") to 9.53 mm (3/8") with sectional densities between 0.3 g cm-2 and 5 g cm-2 were launched toward porcine legs at a range of velocities to determine the penetration thresholds. High-speed videography was captured laterally at 40 kHz and impact velocity was captured using a physics-based tracking software. A generalized linear model with repeated measures and a logit link function was used to predict probability of penetration for each projectile. A total of 600 impacts were conducted to achieve at least 15 penetrating impacts for each projectile over a range of velocities. Higher impact velocities were required to penetrate the skin as sectional density of the projectile decreased, and the relationship between velocity and sectional density exhibited an exponential relationship (V50, $ = 184.6*S{D^{ - 0.385}}$, R2 = 0.95) with substantial change for nonlinearity in sectional densities ranging from 0.3 g cm-2 to 1 g cm-2. Compared to previous studies, the empirical relationship was consistent in the linear region (2-5 g cm-2), and novel experimentation filled in the gaps for sectional densities less than 1 g cm-2, which expressed more nonlinearity than previously estimated. For low-density projectiles with diameters of 1.59 (1/16") or 3.18 (1/8"), 32 impacts were lodged into the epidermis but did not penetrate through the dermis; however, penetration was defined as displacement into or through the dermis. These experimental results may be used to develop and validate finite element simulations of low-density projectile impacts to address complex, multivariate loading conditions for the development of protective clothing to reduce wounding and subsequent infection rates.