36 research outputs found
Iron deficiency anemia as a risk factor for simple febrile seizures
To determine the association of iron deficiency anemia with simple febrile seizures in children presenting in a tertiary care hospital
Spectrum of acute flaccid paralysis in children
Acute flaccid paralysis (AFP) is a clinical syndrome characterized by rapid onset of weakness in a child aged less than 15 years due to any cause when polio is suspected(1). Exact cause of AFP with its incidence is needed for proper management
Spectrum of gullian barre syndrome in children
GBS is a post-infectious poly-neuropathy involving mainly motor but sometimes also sensory and autonomic nerves. This is an epidemiological report on seasonal & monthly distribution of GBS & differences in GBS incidence between male & female in Punjab, Pakistan. Objective: To determine the seasonal variation, age and gender differentiation in children with GBS along with EMG/NCS findings. Study Design: Retrospective, observational,cross sectional study. Place and duration of study: Department of Neurology, Childrens Hospital & The Institute of Child Health, Lahore from January 2014 to December 2014. METHODS: We extracted data from multi centers retrospectively in a 1 year period (January 2014- December 2014). In order to compare the frequency of GBS in different months & seasons we used the chi-square test. RESULTS: There was male predominance with 52.11% (n=37). Highest number of cases (70.4%) were found in age group (11-18 Years) (n=50). Seasonal (P=0.01) and monthly (P=0.02) variation among GBS was observed throughout the year with more prevalence in summer (49.29%) followed by spring (25.35%). Regional date of Punjab revealed highest number of cases 36.6% (n=26) in South Punjab followed by west Punjab 28.16% (n=20) CONCLUSION: Our study shows that there is significant monthly and seasonal variation in the admission rate of patients with GBS in Punjab
Child with Developmental Delay and Pathological Myopia: Poretti–Boltshauser Syndrome
Poretti–Boltshauser syndrome is rare genetic disorder of brain malformation with ocular findings due to mutation in LAMA1 gene. We report a case of five years old girl who presented with high myopia, delayed language and motor development with otherwise normal neurological examination. Brain imaging findings were consistent of Poretti–Boltshauser syndrome with cerebellar dysplasia and cyst (CDC). However, cerebellar ataxia and retinopathy were not found in our index case
Textile‐based triboelectric nanogenerators integrated with 2D materials
The human body continuously generates ambient mechanical energy through diverse movements, such as walking and cycling, which can be harvested via various renewable energy harvesting mechanisms. Triboelectric Nanogenerator (TENG) stands out as one of the most promising emerging renewable energy harvesting technologies for wearable applications due to its ability to harness various forms of mechanical energies, including vibrations, pressure, and rotations, and convert them into electricity. However, their application is limited due to challenges in achieving performance, flexibility, low power consumption, and durability. Here, we present a robust and high‐performance self‐powered system integrated into cotton fabric by incorporating a textile‐based triboelectric nanogenerator (T‐TENG) based on 2D materials, addressing both energy harvesting and storage. The proposed system extracts significant ambient mechanical energy from human body movements and stores it in a textile supercapacitor (T‐Supercap). The integration of 2D materials (graphene and MoS2) in fabrication enhances the performance of T‐TENG significantly, as demonstrated by a record‐high open‐circuit voltage of 1068 V and a power density of 14.64 W/m2 under a force of 22 N. The developed T‐TENG in this study effectively powers 200+ LEDs and a miniature watch while also charging the T‐Supercap with 4‐5 N force for efficient miniature electronics operation. Integrated as a step counter within a sock, the T‐TENG serves as a self‐powered step counter sensor. This work establishes a promising platform for wearable electronic textiles, contributing significantly to the advancement of sustainable and autonomous self‐powered wearable technologies. imag
2D material-based wearable energy harvesting textiles: A review
Wearable electronic textiles (e-textiles) have emerged as a transformative technology revolutionizing healthcare monitoring and communication by seamlessly integrating with the human body. However, their practical application has been limited by the lack of compatible and sustainable power sources. Various energy sources, including solar, thermal, mechanical, and wind, have been explored for harvesting, leading to diverse energy harvesting technologies, such as photovoltaic, thermoelectric, piezoelectric, and triboelectric systems. Notably, 2D materials have gained significant attention as attractive candidates for energy harvesting and storage in e-textiles due to their unique properties, such as high surface-to-volume ratio, mechanical strength, and electrical conductivity. Textile-based energy harvesters employing 2D materials offer promising solutions for powering next-generation smart and wearable devices integrated into clothing. This comprehensive review explores the utilization of 2D materials in textile-based energy harvesters, covering their preparation, fabrication, and characterization strategies. Recent advancements are highlighted, focusing on the integration of 2D materials and their practical implementations, shedding light on the performance and effectiveness of 2D-material-based energy harvesters in e-textiles, and highlighting their potential as a sustainable alternative to conventional power supplies in wearable technologies
Smart and multifunctional fiber‐reinforced composites of 2D heterostructure‐based textiles
Smart and multifunctional fiber reinforced polymer (FRP) composites with energy storage, sensing, and heating capabilities have gained significant interest for automotive, civil, and aerospace applications. However, achieving smart and multifunctional capabilities in an FRP composite while maintaining desired mechanical properties remains challenging. Here, a novel approach for layer‐by‐layer (LBL) deposition of 2D material (graphene and molybdenum disulfide, MoS2)‐based heterostructure onto glass fiber fabric using a highly scalable manufacturing technique at a remarkable speed of ≈150 m min−1 is reported. This process enables the creation of smart textiles with integrated energy storage, sensing, and heating functionalities. This methodology combines gel‐based electrolyte with a vacuum resin infusion technique, resulting in an efficient and stable smart FRP composite with an areal capacitance of up to ≈182 µF cm−2 at 10 mV s−1. The composite exhibits exceptional cyclic stability, maintaining ≈90% capacitance after 1000 cycles. Moreover, the smart composite demonstrates joule heating, reaching from ∼24 to ∼27 °C within 120 s at 25 V.. Additionally, the smart composite displays strain sensitivity by altering electrical resistance with longitudinal strain, enabling structural health monitoring. These findings highlight the potential of smart composites for multifunctional applications and provide an important step toward realizing their actual real‐world applications
An Empirical Comparison of Consumer Innovation Adoption Models: Implications for Subsistence Marketplaces
So called “pro-poor” innovations may improve consumer wellbeing in subsistence marketplaces. However, there is little research that integrates the area with the vast literature on innovation adoption. Using a questionnaire where respondents were asked to provide their evaluations about a mobile banking innovation, this research fills this gap by providing empirical evidence of the applicability of existing innovation adoption models in subsistence marketplaces. The study was conducted in Bangladesh among a geographically dispersed sample. The data collected allowed an empirical comparison of models in a subsistence context. The research reveals the most useful models in this context to be the Value Based Adoption Model and the Consumer Acceptance of Technology model. In light of these findings and further examination of the model comparison results the research also shows that consumers in subsistence marketplaces are not just motivated by functionality and economic needs. If organizations cannot enhance the hedonic attributes of a pro-poor innovation, and reduce the internal/external constraints related to adoption of that pro-poor innovation, then adoption intention by consumers will be lower
Robust and High-Performance Textile-based Triboelectric Nanogenerators Integrated with 2D Materials for Sustainable Self-Powered Wearable Electronics
The human body continuously generates ambient mechanical energy through diverse movements, such as walking and cycling, which can be harvested via various renewable energy harvesting mechanisms. Triboelectric Nanogenerator (TENG) stands out as one of the most promising emerging renewable energy harvesting technologies for wearable applications due to its ability to harness various forms of mechanical energies, including vibrations, pressure, and rotations, and convert them into direct current (DC) electricity. However, their application is limited due to challenges in achieving performance, flexibility, low power consumption, and durability. Here, we present a robust and high-performance self-powered system integrated into cotton fabric by incorporating a textile-based triboelectric nanogenerator (T-TENG) based on 2D materials, addressing both energy harvesting and storage. The proposed system extracts significant ambient mechanical energy from human body movements and stores it in a textile supercapacitor (T-Supercap). The integration of 2D materials (graphene and MoS2) in fabrication enhances the performance of T-TENG significantly, as demonstrated by a record-high open-circuit voltage of 1068V and a power density of 14.64 W/m2 under a force of 22N. The developed T-TENG in this study effectively powers 200+ LEDs and a miniature watch while also charging the T-Supercap with 4-5N force for efficient miniature electronics operation. Integrated as a step counter within a sock, the T-TENG serves as a self-powered step counter sensor. This work establishes a promising platform for wearable electronic textiles, contributing significantly to the advancement of sustainable and autonomous self-powered wearable technologies
A 2 ½ years old boy with squint and speech loss
Tuberculosis of central nervous system is not uncommon in children of developing countries. Tuberculomaswere initially misdiagnosed due to lack of radiological expertise, un availability of CT scans and MRI. For early diagnosis and treatment, they should be kept in differential of space occupying lesions.We had a 2 ½ years old patient had fever, squint, aphasia and loss of motor milestones. On examination he was a malnourished child with right sided hypertonia and involvement of 9th and 10th cranial nerves with hepatospleenomegaly. His CRP was raised and CXRshowed B/L milliary shadowing which helped us to find out the primary focus leading to tuberculoma. His PCR test of blood was positive for Mycobacterium tuberculosis while CSF examination was normal. His work up led us to the diagnosis of a space occupying lesion i.etuberculoma, fungal infection of brain or metastasis. He was managed conservatively as he responded well to antituberculous therapy along with steroids. This concludes that early and prompt treatment of this deadliest disease is the key for favorable outcome