Latex Gloves Research Articles

Experimental study on recycling rubber to increase the impact resistance of cement mortar

The COVID-19 pandemic has led to a surge in medical waste generation, posing hazards to both the environment and global health. The impacts of the COVID-19 pandemic’s medical waste hazard may persist long after the pandemic itself subsides. Improper disposal of medical waste can contaminate environment, posing risks to ecosystems and public health. Discarded medical rubber gloves, for example, can become a source of infection, improper disposal of these gloves can escalate the spread of infectious diseases and increase the risk of transmission of the virus to the general public. This study proposes an innovative and sustainable method to reinforce cement mortar by adding recycled glove rubber as an additive to cement mortar to increase its resistance to impact loads. This study conducted uniaxial compression tests, separating hopkinson pressure bar (SHPB) experiments and SEM observations to evaluate the quasi-static compressive strength and dynamic stress of recycled rubber fiber mortar (RRFM) with varying recycled rubber fiber (RRF) contents (0, 1%, 2%, 3%). Strain curves, dynamic increase factor (DIF), energy absorption rules, failure modes, and microstructure of RRFM mixtures. The experimental results demonstrate that with the addition of RRF, the dynamic stress-strain curve flattens and the peak strain gradually increases. The RRFM sample shows stronger toughness. In comparison to regular cement mortar (NM), RRFM has a higher DIF and specific absorbed energy, a faster increase in dynamic compressive strength, and the ability to absorb more energy per unit volume. Under the same impact load, RRFM has fewer and smaller cracks than NM. Scanning electron microscopy (SEM) testing also observed that RRF formed a strong connection pattern with the cement mortar matrix.

Evaluating and optimizing NBR-modified bituminous mixes: a rheological and RSM-based study.

Bitumen shows visco-elastic behavior, exhibiting both elastic and viscous properties as predicted by dynamic response and phase angle. Modern asphalt bituminous pavements face issues such as early-stage fatigue cracks, rutting, and permanent deformations due to low-temperature cracking, high-temperature deformation, moisture susceptibility, and overloading. These pavement distresses result in the formation of potholes, alligator cracks, and various deformations, which accelerate the need for rehabilitation and maintenance. To address these concerns, this study focused on utilizing Nitrile Butadiene Rubber derived from surgical gloves as an additive in conventional asphalt pavements to assess its effect on stiffness. Nitrile Butadiene Rubber was added in intervals of 2%, 4%, 6%, and 8% to conventional bituminous pavement. The rheological properties, marshall properties, dynamic modulus, and phase angle were evaluated for varying percentages of Nitrile Butadiene Rubber at different temperature, and frequency. The dynamic response was determined using a simple performance tester at four different temperatures (4.4°C, 21.1°C, 37.8°C, and 54.4°C) and six different frequencies (0.1, 0.5, 1, 5, 10, and 25Hz). Response surface methodology was employed to establish a relationship between input and output variables and to optimize the amount of Nitrile Butadiene Rubber in the mix based on dynamic modulus and phase angle. The study concluded that adding up to 6% of Nitrile Butadiene Rubber improved Marshall stability, while higher percentages led to reduced stability. A similar trend was observed in the dynamic modulus, which peaked with the addition of 6% Nitrile Butadiene Rubber, regardless of frequency and temperature. The response surface methodology model indicated that coupling the percentage of Nitrile Butadiene Rubber with frequency increased the dynamic modulus at a constant temperature, with the highest value occurring at 4.4°C. However, the dynamic modulus decreased as the temperature rose for the same combinations of Nitrile Butadiene Rubber percentages and frequencies. Numerical optimization suggested that a maximum of 5.9% Nitrile Butadiene Rubber should be added to achieve the highest dynamic modulus and lowest phase angle.

The Use of Single-Use Medical Gloves in Doctors' Practices and Hospitals.

Single-use medical gloves achieve their purpose only when properly used. Proper use also helps avoid undesired consequences such as excessive waste and CO2 emissions, as well as inadequate hand hygiene. In this selective review of the primary scientific literature, we summarize the current state of knowledge on the use of single-use medical gloves in the health-care sector. We also provide further information from national recommendations, guidelines, and regulatory provisions. Single-use medical gloves mainly serve to protect the health-care professional and are only rarely meant to promote patient safety. For reasons of occupational safety and self-protection, hand hygiene should be performed after single-use medical gloves are removed. A study on single-use medical gloves from open boxes revealed that 13% bore human pathogenic bacteria. It was found in a meta-analysis that wearing single-use medical gloves can lower the risk of nosocomial infection (incidence rate ratio, IRR: 0.77 [0.67; 0.89]. In a randomized controlled trial, adherence for putting on single-use medical gloves without prior hand disinfection was 87%. On the other hand, where hand disinfection was expected to be performed before putting on gloves, adherence was 41%. Proper use can lower the rate of occupational skin diseases and improve adherence to hand hygiene for the five moments in which it is recommended (before and after patient contact, before aseptic procedures, after contact with potentially infectious material, and after contact with the immediate patient environment). Limiting the use of single-use medical gloves to its proper indications promotes the safety of health-care professionals and patients and has beneficial ecological and economic effects as well.

A Review on Mechanical Fuzzy Logic Control Cutters for Latex Glove

A Review on Mechanical Fuzzy Logic Control Cutters for Latex Glove

Enhanced 2D Hand Pose Estimation for Gloved Medical Applications: A Preliminary Model.

(1) Background: As digital health technology evolves, the role of accurate medical-gloved hand tracking is becoming more important for the assessment and training of practitioners to reduce procedural errors in clinical settings. (2) Method: This study utilized computer vision for hand pose estimation to model skeletal hand movements during in situ aseptic drug compounding procedures. High-definition video cameras recorded hand movements while practitioners wore medical gloves of different colors. Hand poses were manually annotated, and machine learning models were developed and trained using the DeepLabCut interface via an 80/20 training/testing split. (3) Results: The developed model achieved an average root mean square error (RMSE) of 5.89 pixels across the training data set and 10.06 pixels across the test set. When excluding keypoints with a confidence value below 60%, the test set RMSE improved to 7.48 pixels, reflecting high accuracy in hand pose tracking. (4) Conclusions: The developed hand pose estimation model effectively tracks hand movements across both controlled and in situ drug compounding contexts, offering a first-of-its-kind medical glove hand tracking method. This model holds potential for enhancing clinical training and ensuring procedural safety, particularly in tasks requiring high precision such as drug compounding.

A Systematic Review of Occupational Health and Safety in Mining Sector in Pakistan

The mining sector in Pakistan is regarded as a hazardous occupation due to its dangerous nature and workingenvironment, which frequently results in deadly accidents. This study is aimed to conduct a systematic review of theexisting studies on occupational safety and health in the mining sector of Pakistan. For this systematic review, Web ofScience, PubMed, Science Direct, Science Hub, and Google Scholar were consulted to search data. Followingkeywords were used related to occupational health and safety in mining: occupational health and safety (OH&S),mining safety measures, mining health issues, and mining safety culture in Pakistan's mining industry. The result of themeta-analysis shows that OH&S is a major concern in the mining sector. Natural factors, including roof falls, gases anddust, and explosions, as well as human factors such as lack of training, ignorance of safety measures, lack ofknowledge, outdated mining methods, and neglect of safety equipment (helmets, goggles, safety gloves, and masks),have led to accidents and casualties. Demographic factors such as age and personal factors like work experience andduration of job are also major causes of mining accidents that lead to fatalities and injuries. The government,stakeholders, and miners themselves have not been able to take serious initiatives to ensure safety. This studyconcluded that mining conditions are hazardous throughout the country. Workers lives are in danger. Improvements insafety measures not only protect workers lives but also decrease mining accidents, and lead to increased production

FP6.2 - A survey of the estimated cost of consumables amongst UK medical students

Abstract Aims With increasing financial difficulties for the NHS, clinician’s awareness of the cost of consumable items utilised is vital. Despite this, clinician’s cost-awareness and exposure to health economics amongst students is limited. We hence undertook this survey to assess cost-awareness amongst medical students. Methods An online questionnaire was distributed to London medical students. Participants were asked their demographic data and to estimate the cost of 10 consumable items. Each item’s actual cost was compared with the average, median and interquartile range of the estimated price. An estimate was deemed ‘correct’ if it was within 20% of the actual price. Results Across all items 9.63% of estimates were ‘correct’. There was no correlation between medical school or academic year and accuracy of cost-estimation. The most accurately estimated item cost was the ‘10ml syringe’ (19.55%), the least was the ‘1 litre bag of intravenous normal saline’ (0.50%). The most overestimated item cost was the ‘vial of 1.2g intravenous co-amoxiclav’ (median estimate/actual cost = 9.43), the ‘pair of standard sterile surgical gloves’ was the only underestimated item cost (median estimate/actual cost = 0.97). Conclusions We found a poor understanding of the cost of consumables amongst medical students. Whilst a lack of year 6 students and the London geographic limited this study, we believe this is the first large-scale survey assessing the cost of consumables amongst UK students. By providing a benchmark of current knowledge, this survey could serve as a catalyst for the inclusion of health economics in medical school curricula, improving cost-awareness amongst students and doctors.

A Prospective Clinical Audit of Sterile Surgical Glove-Donning Practices Among Young Surgeons at a Tertiary Care Hospital in Sudan.

Background Adherence to aseptic protocols and proper sterilization is critical for optimal patient recovery post-surgery. The standard procedure for donning sterile surgical gloves helps manage infection risk and maintain surgical site cleanliness by following aseptic principles. This study evaluates adherence to these protocols among young surgeons at a tertiary care hospital in Sudan. Methods This prospective audit included 42 young residents and house officers at a tertiary care hospital in Sudan, following ethical clearance. Compliance with sterile surgical glove-donning practices was assessed using the World Health Organization (WHO) pre- and post-intervention criteria. Participants were observed in the operating room without prior notice. The intervention comprised a video presentation and a live demonstration. Results Pre-intervention adherence to standard criteria for donning sterile surgical gloves was 73.4% (n= 31). This rate increased significantly to 91.4% (n= 38) following the intervention and showed marked improvement. Conclusion The audit demonstrated a significant improvement in adherence to donning sterile surgical gloves practices after the intervention. Implementing WHO guidelines effectively enhances compliance, reduces infection risks, and increases awareness of aseptic practices.

1878P Efficacy of surgical gloves (SG) as compression therapy to prevent oxaliplatin-induced peripheral neuropathy (PN): The ELEGANT trial

1878P Efficacy of surgical gloves (SG) as compression therapy to prevent oxaliplatin-induced peripheral neuropathy (PN): The ELEGANT trial

Advantages of online supercritical fluid extraction and chromatography hyphenated to mass spectrometry to analyse plastic additives in laboratory gloves

Plastic additives are introduced in plastic material formulations, along with organic polymers, to offer different properties such as stability, plasticity or color. However, plastic additives may migrate from the plastic material to the content (in case of plastic containers) or to the material in contact with the plastic, like human skin. In the case of plastic medical devices, this migration is of particular interest, as plastic additives may be deleterious to health. In the present paper, we examined the interest of combining supercritical fluid extraction (SFE) to supercritical fluid chromatography (SFC) hyphenated to mass spectrometry (MS) in an online system to characterize plastic additives in laboratory gloves, taken as samples of medical devices. A set of target compounds comprising 18 plasticizers, 4 antioxidants and 2 lubricants was defined and their detectability with MS was examined, where it appeared that electrospray ionization (ESI) provided better detectability than atmospheric pressure chemical ionization (APCI). After examining possible stationary phases with the help of Derringer desirability function, an isocratic chromatographic method (CO2:methanol 95:5) was developed on Shim-pack UC Phenyl column. The extraction method was examined with a 3-level full factorial design of experiments to optimize the extraction temperature (40 °C) and pressure (200 bar). The online SFE-SFC-MS method was compared to offline methods where the samples were extracted with liquid solvents at atmospheric pressure or high pressure then analysed with SFC-MS. In all cases, offline methods showed significant contaminants (like the oleamide lubricant) issuing from laboratory plastic materials as nitrogen drying station, syringes and filters, while the online method allowed a complete elimination of laboratory contaminations. Furthermore, the online method saved time, solvents and laboratory consumables. It will also show that transferring a compressible fluid from a loading loop is favourable to high efficiency, as the resulting chromatographic peaks are much thinner than when transferring a liquid. Compared to injecting liquid heptane, the efficiency increase was 3.4-fold, while compared to injecting liquid methanol (a common practice in SFC), the efficiency increase was 13-fold. Finally, the additive composition of different laboratory gloves was compared.

Stickiness of 7 types of iodinated contrast media used during interventional radiology and interventional cardiology procedures

IntroductionDuring Interventional Cardiology (IC) and Interventional Radiology (IR) procedures operators’ gloves, guide wires and catheters may stick together due to the inherent stickiness of Iodine Containing Contrast Media (ICCM). This may result in displacement of materials, compromising technical success. In this study we compare the stickiness of seven frequently used types of ICCM. Material and methodsXenetix 300, Hexabrix 320 (Guerbet, Villepinte, France), Ultravist 300 (Bayer, Leverkusen, Germany), Visipaque 270, Omnipaque 300, Visipaque 320 (GE, Wauwatosa, WI) and Iomeron300 (Bracco, Milano, Italy) are compared using a probe-tack test. Pieces of surgical gloves are put together with 0.1 ml of of ICCM in between, and subsequently pulled apart under computer control. Stickiness is measured as the work needed to separate the probes. ResultsFrom least to most sticky results were: Hexabrix 320 (mean Work (mJ); range: 0.70; 0.16–1.23), Visipaque 270 (1.18; 0.47–1.89), Visipaque 320 (1.70; 0.59–2.81), Iomeron 300 (3.01; 1.82–4.20), Xenetix 300 (5.83; 3.96–7.69), Ultravist 300 (5.83; 2.83–8.84), Omnipaque 300 (8.14; 6.95–9.33). The four least sticky ICCM differ statistically significantly (p = 0.000–0.004) from the remaining. In this research Omnipaque 300, Ultravist 300 and Xenetix 300 are the stickiest and may hence pose the greatest practical problems during procedures; in contrast, Hexabrix 320, Visipaque 270 and Visipaque 320 are the least sticky in this research and may therefore aid in constraining complications caused by stickiness. ConclusionA significant and reproducible difference in stickiness exists between commercially available ICCM, Hexabrix 320, Visipaque 270, Visipaque 320 and Iomeron 300, being least sticky.

Synergistic state governance of labour standards in global value chains: Forced labour in the Malaysia–Nepal–UK medical gloves supply chain

Drawing on research into medical gloves global value chains (GVCs), this article examines the interacting roles that states differently positioned in GVCs have played in preventing and eliminating forced labour. Our case study, based on a worker survey and semi-structured interviews across GVC actors, focuses on forced labour in the Malaysian medical gloves sector during the COVID-19 pandemic, linking production in Malaysia, end markets in the UK (primarily through procurement for the National Health Service) and migrant-sending countries, especially Nepal. We analyze the intermeshing effects of the different roles of states, operating at either the horizontal or vertical level of GVC governance, in terms of contributing to issues of forced labour. We identify three state roles in the Malaysia–UK medical gloves chain: producer state (Malaysia), migrant-sending state (Nepal) and regulator-buyer state (UK). We also identify some of the most persistent barriers to resolving forced labour in the value chain. Our research illustrates that Malaysia’s complex regulatory, political and institutional dynamics most directly influence forced labour in gloves production, but Nepal’s migration policies and the UK’s healthcare procurement practices also create forced labour risk in Malaysia. Advancing Gereffi and Lee’s (2016: 25) notion of “synergistc governance” and Jessop’s (2016) strategic-relational approach (SRA) to the state, we thus argue that the creation of sustained and positive regulatory synergies among states differently positioned in GVCs is necessary for the prevention and elimination of forced labour.

Synergistic effects of chitosan and gamma irradiation on enhanced fungal growth inhibition and biodegradability of natural rubber latex film

Developing novel formulations and processes to improve the fungal growth inhibition and biodegradability of NR products has become a major challenge for the scientific community, given the health risks associated with fungi in natural rubber (NR) products and the environmental concerns regarding NR waste. Consequently, this study comprehensively investigated the synergistic effects of chitosan and gamma irradiation on enhancing fungal growth inhibition and biodegradability in natural rubber latex (NRL) films. The research involved incorporating varying chitosan contents (0, 3, 6, or 9 phr) into NRL composites and exposing them to different gamma doses (0, 5, 10, or 15 kGy). The results showed that increasing the chitosan content and the gamma dose improved the ability of the NRL samples to inhibit fungal growth on their surfaces. This was evidenced by the absence of fungal colonies after 7 days of incubation on potato dextrose agar (PDA) plates for NRL samples irradiated at 5–15 kGy with 9 phr of chitosan. This determination was based on isolating fungi from the film surfaces, followed by serial dilution and a viable plate count. The biodegradability tests also revealed that the NRL films irradiated at 15 kGy with 9 phr of chitosan had the highest weight loss, reaching as high as 10.42 ± 0.62 % after soil burial for 8 weeks. However, the results indicated that gamma irradiation on the pristine NRL and chitosan/NRL films did not substantially alter the thermal stabilities, density, morphology, and functional groups of the samples. Lastly, by comparing the tensile properties of all the NRL films to the ASTM D3578-01a standard for examination gloves, the optimum conditions for the NRL films were 5 kGy of gamma irradiation with 9 phr of chitosan. This combination resulted in gloves with sufficient tensile strength and complete fungal growth inhibition.

Design and Additive Manufacturing of Medical Face Shield for Healthcare Workers Battling Coronavirus (COVID-19).

During the coronavirus disease-19 pandemic, the demand for specific medical equipment such as personal protective equipment has rapidly exceeded the available supply around the world. Specifically, simple medical equipment such as medical gloves, aprons, goggles, surgery masks, and medical face shields have become highly in demand in the health-care sector in the face of this rapidly developing pandemic. This difficult period strengthens the social solidarity to an extent parallel to the escalation of this pandemic. Education and government institutions, commercial and noncommercial organizations and individual homemakers have produced specific medical equipment by means of additive manufacturing (AM) technology, which is the fastest way to create a product, providing their support for urgent demands within the health-care services. Medical face shields have become a popular item to produce, and many design variations and prototypes have been forthcoming. Although AM technology can be used to produce several types of noncommercial equipment, this rapid manufacturing approach is limited by its longer production time as compared to conventional serial/mass production and the high demand. However, most of the individual designer/maker-based face shields are designed with little appreciation of clinical needs and nonergonomic. They also lack of professional product design and are not designed according to AM (Design for AM [DfAM]) principles. Consequently, the production time of up to 4 – 5 h for some products of these designs is needed. Therefore, a lighter, more ergonomic, single frame medical face shield without extra components to assemble would be useful, especially for individual designers/makers and noncommercial producers to increase productivity in a shorter timeframe. In this study, a medical face shield that is competitively lighter, relatively more ergonomic, easy to use, and can be assembled without extra components (such as elastic bands, softening materials, and clips) was designed. The face shield was produced by AM with a relatively shorter production time. Subsequently, finite element analysis-based structural design verification was performed, and a three-dimensional (3D) prototype was produced by an original equipment manufacturer 3D printer (Fused Deposition Modeling). This study demonstrated that an original face shield design with <10 g material usage per single frame was produced in under 45 min of fabrication time. This research also provides a useful product DfAM of simple medical equipment such as face shields through advanced engineering design, simulation, and AM applications as an essential approach to battling coronavirus-like viral pandemics.

Enhancing Cadaver Labs for Endoscopic Spine Surgery: The Glove as the “Lesion”

We describe a novel yet simple training exercise for residents who are being introduced to endoscopic spine surgery. Prior to residents training on the endoscopic interlaminar approach, the course faculty performed an endoscopic transforaminal approach and inserted a small piece of a surgical glove into the ventral epidural space of a cadaveric torso. The transforaminal approach did not alter the anatomy of the interlaminar approach so the residents were able to practice as if it were a de novo situation. Placing the small "lesion" provided an exercise to confirm the residents were able to safely access the area and provided practice for them to carefully grasp the "lesion" and remove it. Prior to resident training on the endoscopic transforaminal approach, the course faculty utilized an interlaminar approach to place the "lesion". A questionnaire with a five-point Likert scale of agreement was completed by the residents to assess their experience with the training exercise. Five residents attended the cadaver lab, and 100% strongly agreed that the cadaver lab provided a realistic representation of the procedure demonstrated, the "lesion" removal added to their educational experience, and they were overall satisfied with the educational session. One of the lessons learned with this exercise that we will consider in future courses would be to place a radiodense "lesion" that could be visualized on fluoroscopy, and serve as a radiologic target to find. This can help guide the trainee in knowing where to search if the "lesion" is more difficult to find.

Health facilities readiness for standard precautions to infection prevention and control in Nepal: A secondary analysis of Nepal Health Facility Survey 2021.

Improvements in standard precaution related to infection prevention and control (IPC) at the national and local-level health facilities (HFs) are critical to ensuring patient's safety, preventing healthcare-associated infections (HAIs), mitigating Antimicrobial Resistance (AMR), protecting health workers, and improving trust in HFs. This study aimed to assess HF's readiness to implement standard precautions for IPC in Nepal. This study conducted a secondary analysis of the nationally-representative Nepal Health Facility Survey (NHFS) 2021 data and used the Service Availability and Readiness Assessment (SARA) Manual from the World Health Organization (WHO) to examine the HF's readiness to implement standard precautions for IPC. The readiness score for IPC was calculated for eight service delivery domains based on the availability of eight tracer items: guidelines for standard precautions, latex gloves, soap and running water or alcohol-based hand rub, single use of standard disposal or auto-disable syringes, disinfectant, safe final disposal of sharps, safe final disposal of infectious wastes, and appropriate storage of infectious waste. We used simple and multiple linear regression and quantile regression models to examine the association of HF's readiness with their characteristics. Results were presented as beta (β) coefficients and 95% confidence interval (95% CI). The overall readiness scores of all HFs, federal/provincial hospitals, local HFs, and private hospitals were 59.9±15.6, 67.1±14.4, 59.6±15.6, and 62.6±15.5, respectively. Across all eight health service delivery domains, the HFs' readiness for tuberculosis services was the lowest (57.8±20.0) and highest for delivery and newborn care services (67.1±15.6). The HFs performing quality assurance activities (β = 3.68; 95%CI: 1.84, 5.51), reviewing clients' opinions (β = 6.66; 95%CI: 2.54, 10.77), and HFs with a monthly meeting (β = 3.28; 95%CI: 1.08, 5.49) had higher readiness scores. The HFs from Bagmati, Gandaki, Lumbini, Karnali and Sudurpaschim had readiness scores higher by 7.80 (95%CI: 5.24, 10.36), 7.73 (95%CI: 4.83, 10.62), 4.76 (95%CI: 2.00, 7.52), 9.40 (95%CI: 6.11, 12.68), and 3.77 (95%CI: 0.81, 6.74) compared to Koshi. The readiness of HFs to implement standard precautions was higher in HFs with quality assurance activities, monthly HF meetings, and mechanisms for reviewing clients' opinions. Emphasizing quality assurance activities, implementing client feedback mechanisms, and promoting effective management practices in HFs with poor readiness can help to enhance IPC efforts.

THE USE OF PERSONAL PROTECTIVE EQUIPMENT BY PHARMACISTS AND RADIOGRAPHERS DURING THE COVID-19 PANDEMIC IN KENDAL DISTRICT

In order to control the transmission of covid-19 which entered Indonesia in early 2020, the government implemented health protocol regulations. Apart from health protocols, one of the steps that health workers can implement to control the transmission of covid-19 when providing services during the pandemic is to use personal protective equipment while working. This is the background for the author to study further in research that aims to determine the use of personal protective equipment used by pharmacists and radiographers during the covid-19 pandemic while in service in Kendal District. The research method used was descriptive qualitative by giving questionnaires electronically using google form to research respondents. The research results obtained include, the majority of respondents were female with a percentage of 62%, the health workers who participated as research respondents consisted of 38% pharmacists and 62% radiographers. The use of personal protective equipment used by pharmacists during the covid-19 pandemic includes masks and gloves which are adjusted to the risks of the work activities carried out. The use of personal protective equipment used by radiographers during the covid-19 pandemic includes wearing work clothes according to hospital regulations, surgical isolation gowns, N95 respirators, eye protection, medical gloves, closed shoes, face shields when carrying out medical interventions and tools additional personal protection according to the risks of the work activities carried out. So, it can be concluded that the personal protective equipment used by pharmacists and radiographers in Kendal District while on duty during the covid-19 pandemic has met the elements of compliance requirements in efforts to control the transmission of covid-19, such as the use of personal protective equipment based on indications for their use by considering the risk of exposure and possible transmission dynamics. By implementing appropriate personal protective equipment when working, it is hoped that pharmacists and radiographers in Kendal District can be protected from transmission of covid-19.

Development of an experimental technique to determine the barrier performance of medical gloves when stretched.

Protective clothing standards, such as test methods published by ASTM International, play an integral role in ensuring the performance of personal protective equipment. The standard tests are not without limitations and are periodically reviewed and often updated. Some tests may not be reflective of in-use conditions. A new test cell was designed using sanitary fixtures to evaluate the effect of glove stretch on barrier performance using fluorescein solution as the challenge agent for enhanced visualization and fluorometer detection. Domed-shaped and flat screens were developed to permit and limit glove stretch within the test cell. The barrier performance of glove swatches was evaluated for both stretched and unstretched states. Latex, nitrile, and vinyl glove models of various thicknesses were evaluated. The tests were conducted following pressure and time parameters specified in ASTM F903, ASTM F1670, and ASTM F1671. Fluorescein solution movement, which may occur through penetration, was measured using a fluorometer. Glove stretch caused a reduction in glove thickness ranging from 16% to 40%. Overall, 21 sample failures were found (16.7%; n = 126) regardless of test condition. Nitrile gloves provided better barrier efficacy with the lowest failure rates (2.38%; 1 failure out of 42) compared to latex (19.4%; 7 failures out of 36) and vinyl gloves (27.1%; 13 failures out of 48). Differences in failure rates between stretched and unstretched gloves were insignificant; however, the latex material showed a 2.5 times increase in failures when stretched compared to unstretched. The new test apparatus was able to differentiate between the barrier performance of different glove materials. The use of a domed screen allowed the gloves to stretch, a condition that better represents the state of gloves when in use. Analysis of samples collected from the glove surface opposite to the exposure may provide a way to assess chemical permeation in addition to penetration.

Advances and Significances of Nanoparticles as Concrete Additives: A Comprehensive Review

Nanotechnology, a significant technological advancement in the current century, has brought about revolutionary changes in numerous fields by manipulating matter at the nanoscale. This review paper examines the various applications of nanoparticles in the concrete industry, emphasizing their potential to improve mechanical qualities, thermal performance and sustainability. This study investigates multiple synthesis strategies, such as grafting, sol–gel, chemical and biological procedures, which offer concrete engineers a diverse range of options to tailor the properties of nanoparticles. The utilization of this particular material results in notable enhancements in many mechanical properties of concrete, including its compressive and flexural strength, toughness, thermal conductivity and self-sensing capabilities. These improvements ultimately contribute to the overall enhancement of the concrete’s structural integrity and energy efficiency. Adding nanoparticles to concrete has also been shown to help it develop self-healing properties. This means that structures last longer and require less maintenance. Making building materials more resistant to chemical corrosion, wear and environmental forces is also a big step in making them last longer. The growing emphasis on sustainability within the building industry has generated heightened attention toward utilizing self-healing concrete, which frequently incorporates nanoparticles. To make the building industry more environmentally friendly, using less traditional cement and recycling personal safety equipment (PPE) like vinyl and latex gloves can help protect the environment. This review also highlights the significant problems in employing nanoparticles in concrete: obtaining equal dispersion, handling-costs and addressing environmental and health concerns. However, nanotechnology is advancing construction concrete research to improve mechanical properties and durability.

The level of work performance of employees at Top Gloves in A in Temouchen

This study aimed to identify the level of job performance and to reveal the differences in it according to the variable of professional experience. The study was conducted on a sample of employees of a medical glove manufacturing company in Ain Temouchent. The job performance questionnaire adopted in the study by Zeribi Ahlam (2017) was used and applied to a sample of 80 employees, following the descriptive approach. The study revealed a high level of job performance, and the absence of differences in the level of job performance according to the variable of work experience.