Journal of Chemical Health Risks (Islamic Azad University, Iran)
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Indoor Environmental Quality in Smart Libraries: Integrating Energy Management with User Comfort and Health
Get PDFSmart libraries represent a shift in building design, integrating energy management systems (EMS) with indoor environmental quality (IEQ) to enhance both sustainability and user comfort. This paper examines the integration of indoor environmental quality (IEQ), energy management, and user comfort in the design of smart libraries. With the growing emphasis on energy efficiency, smart libraries must balance energy consumption with the need to maintain a healthy and comfortable indoor environment for occupants. The research highlights the importance of optimizing thermal comfort, indoor air quality (IAQ), and ventilation systems to ensure user satisfaction and well-being. Emerging technologies such as advanced HVAC systems, smart energy management systems, and IoT-driven feedback mechanisms are explored as solutions for reducing energy consumption without compromising user comfort. By incorporating adaptive comfort models and real-time occupant feedback, smart libraries can enhance both energy performance and indoor environmental quality. This paper offers insights into the latest strategies and innovations in smart building design, emphasizing the critical role of IEQ in creating sustainable, energy-efficient libraries that support human health and comfort
Evaluation of Delivered Dose in Brain Radiosurgery using an Anthropomorphic Phantom: An End-to-End Dosimetric Assessment
Get PDFThis study evaluates the accuracy of delivered dose in brain radiosurgery using stereotactic techniques with a 6 Flattening Filter-Free (FFF) beam energy. An end-to-end quality assurance (QA) process was performed using an anthropomorphic phantom and nanoDots dosimeters. The workflow included Computed Tomography (Computed Tomography (CT)) simulation, treatment planning, and dose delivery using advanced medical imaging and radiation therapy systems. Dosimetric measurements were conducted to assess dose distribution, target coverage, and healthy tissue sparing.
Results demonstrated close agreement between the planned and delivered doses for three simulated lesions, with average delivered doses of 8.25 ±0.14 Gy, 8.33±0.16 Gy, and 8.30 ±0.15 Gy, and a maximum hotspot dose of 8.60 ±0.19 Gy. The accuracy of dose distribution was verified with a gamma index conformity of 99.5%. This study emphasizes the importance of end-to-end QA in stereotactic radiosurgery, especially in regions with tumor sizes under 1 cm, where careful dose planning is critical to minimizing the risks of complications such as necrosis and damage to surrounding healthy tissues
Social Change among Indians in Mauritius During the 19th and 20th Centuries
Get PDFIndians who went to Mauritius whether as slaves or indentured labour or as free citizens carried with them the cultural baggage of the times of their migration. The sheer large numbers of Indian migrants altered the demography of a tiny Mauritian island. The impressions of Indian culture were widespread. The Indian value system kept on guiding them through their stay in Mauritius which kept the Indian way of life intact in Mauritius. The global changes and intensification of global interaction compelled the Mauritian governments and people to adopt the changes for their development. Universal suffrage, education and standardized legal system were the major factors that provided an opportunity to migrants to demand for citizens’ rights in Mauritius. These forces were so strong that they impacted not only economy and polity but brought about a fundamental shift in the socio-cultural life of Indians in Mauritius. The present paper analysis the social change in Indians in Mauritius in the 19th and 20th Century. It attempts to understand social change in Mauritius during the 19th and 2oth centuries through the impact of modernization processes. Out of the several aspects of modernization processes, the impact of factors such as universal suffrage, standardized legal system and education have been dealt with in detail
Mangosteen Pericarp based Bionanohybrid Composites: A Comprehensive Review
Get PDFIntroduction: In recent times, the overall demand for sustainable materials in place of low-cost, high-strength materials has been triggered worldwide, prompted researchers to develop eco-friendly biocomposites endowed with biodegradability, renewability and non-toxicity. Mangosteen pericarp based Nano hybrid biocomposites (MPNHBC) have gained more research focus in recently due to their promising properties. The present review encompasses progresses in the synthesis, properties and applications of bio composites giving special emphasis to MPNHBCs. The increasing demand for sustainable and eco-friendly materials has led to a surge in research on natural fiber-based composites. Mangosteen pericarp, a readily available and renewable resource, has emerged as a promising candidate for the development of biodegradable composites. Rich in cellulose, hemicellulose, and lignin, mangosteen pericarp offers a unique combination of mechanical, thermal, and chemical properties. This review aims to provide a comprehensive overview of the current state of knowledge on mangosteen pericarp-based composites, including their preparation, characterization, and potential applications. By highlighting the opportunities and challenges associated with these composites, this review seeks to stimulate further research and development in this exciting field.
Objectives: The objective of this review is to systematically summarize and critically evaluate the current state of knowledge on mangosteen pericarp-based composites, with a focus on their preparation, properties, and potential applications, in order to identify gaps, challenges, and future directions for research and development in this field.
Results: The results show that mangosteen pericarp-based composites exhibit promising physical and mechanical properties, thermal stability, and chemical resistance. Microstructural analysis reveals a unique composition and structure. These composites compare favourably to other natural fiber composites, with potential applications in packaging, biomedical devices, and construction materials. However, challenges remain, including scaling up production, improving standardization, and reducing costs. Addressing these challenges can help unlock the full potential of mangosteen pericarp-based composites.
Conclusions: Mangosteenpericarp-based composites have demonstrated tremendous potential as sustainable, biodegradable, and eco-friendly materials. The unique combination of mechanical, thermal, and chemical properties offered by mangosteen pericarp makes it an attractive candidate for various applications, including packaging, biomedical devices, and construction materials. While challenges related to scalability, standardization, and cost-effectiveness remain, ongoing research and development efforts are expected to address these limitations. As the world shifts towards a more circular and sustainable economy, mangosteen pericarp-based composites are poised to play a vital role in reducing our reliance on non-renewable resources and mitigating environmental impacts
A Comparative Evaluation of Different Impression Techniques for Single Tooth Implant Placement Using Different Impression Materials to Check the Accuracy of Master Cast for Passive Fit of Prosthesis: An In Vitro Study
Get PDFIntroduction: The field of modern dentistry has been transformed by the addition of implant prostheses to traditional treatment techniques, which is regarded as a turning point in the development of clinical practises in daily life. One of the pillars of appropriate prosthetic reconstruction continues to be adequate impression procedures. Therefore, this study was done to compare & evaluate two impression techniques, two different impression materials & two types of impression copings.
Methods: A dentulous resin master model with implant in right mandibular first molar was placed. Samples were obtained from both impression materials using two impression techniques and two types of impression copings. The samples were grouped into 8 groups with 13 samples in each group. 3 Points (A, B & C) & 2 Lines (B-marking & C-marking) were drawn on resin model & resultant casts & were used to assess the dimensional accuracy, after measuring with Travelling microscope and Digital Vernier Calliper.
Results: B marking in group C showed highest mean of 1.9769 ± 0.05, Group C showed highest mean of 36.2869 ± 0.01, C marking in group C showed highest mean of 4.9262 ± 0.02, C marking in group C showed highest mean of 41.0469 ± 0.05 interpreting better precision amongst other groups.
Conclusions: Statistically significant differences were not found in the accuracy of master casts using two impression techniques & effect of sandblasting was found statistically significant on external surface of impression copings using two impression techniques
Bio Efficiency of Medicinal Plant Extracts Against Rice Pest, Leptocorisa Oratorius as an Alternative to Chemical Pesticides.
Get PDFConventional chemical pesticides cause a lot of biotic and abiotic hazardous effects, and the need for an eco-friendly alternative is vital. Bioactive compounds from plant extracts are promising candidates to be established as potential insecticides. The current study investigates the insecticidal potential of five aqueous plant extracts, including Cassia fistula, Annona muricata, Atrocarpus heterophyllus, Coleus aromaticus and Clerodendron infatunatem against L.oratorius. Qualitative analysis of the aqueous plant extracts was also examined for its phytochemical constituents. Maximum mortality was caused by C. fistula (77.34%) at 15% and minimum mortality was observed in C. infatunatem (17.33%) at 3% concentration. Various phytochemicals of high bioactivity like phenols, tannins, flavonoids, saponins, terpenoids, alkaloids, quinones and fatty acids present in the plants under study have the potential to act as insecticides against the rice pest L.oratorius
The Role of Digital Dentistry in Implantology: Transforming Diagnosis, Planning, and Outcomes
Get PDFDigital dentistry has emerged as a pivotal innovation in modern implantology, enhancing the precision and predictability of diagnostic and therapeutic workflows. Technologies such as cone-beam computed tomography (CBCT) enable detailed three-dimensional visualization of anatomical structures, aiding in the accurate evaluation of bone quality, implant site selection, and surgical risk assessment. The integration of computer-aided design/computer-aided manufacturing (CAD/CAM) systems facilitates the fabrication of highly precise custom abutments, prosthetics, and surgical guides, thereby improving treatment accuracy and efficiency. Guided implant surgery, supported by these digital tools, allows for minimally invasive procedures, reducing surgical complications and optimizing clinical outcomes. Additionally, the advent of 3D printing has revolutionized implant prosthodontics by enabling rapid production of patient-specific components, significantly enhancing workflow efficiency. Artificial intelligence (AI) further augments implant planning through advanced predictive analytics and algorithm-based decision-making. While the implementation of these technologies presents challenges, including cost, technical complexity, and training requirements, the continuous evolution of digital tools in implant dentistry underscores their transformative potential. This review explores the scientific advancements and clinical implications of digital dentistry in implantology, highlighting its role in advancing precision-driven and patient-centred care
Orthokeratinised Odontogenic Cyst of the Jaw- Report of Two Cases and Review of Literature
Get PDFIntroduction-
Orthokeratinized Odontogenic Cyst (OOC) is a rare developmental cyst with distinct histopathological characteristics. Initially classified as a variant of odontogenic keratocyst (OKC), OOC was later recognized as a separate entity by WHO classification (2017) due to its unique features.
Case Report-
A 17-year-old male presented with painful swelling in the lower jaw, progressively increasing over 2-3 months. Clinical examination revealed bony hard growth in the posterior mandible, confirmed as OOC through imaging and histopathology. Surgical enucleation resulted in uneventful healing and no recurrence over 12 months.
A 29-year-old male reported pain and reduced mouth opening in the lower jaw. Clinical and radiographic evaluations showed unilocular homogenous radiolucensy with root resorption in 36 37 and impacted 38, confirmed as OOC histo-pathologically. Surgical enucleation led to successful recovery with no recurrence over 7 months.
Conclusion-
These cases illustrate rare occurrences of OOCs in the posterior mandible that were clinically diagnosed as OKC/ Dentigerous cyst
Advancements in Periodontal Regeneration: Modern Approaches
Get PDFPeriodontal regeneration represents a significant frontier in modern dentistry, aiming to restore the structure and function of tissues lost due to periodontitis. Recent advances in tissue engineering, biomaterials, and molecular biology have introduced novel strategies that go beyond conventional therapies. Innovations such as growth factor delivery, stem cell-based therapies, and the application of biomimetic scaffolds have demonstrated promising outcomes in both preclinical and clinical settings. Moreover, the integration of nanotechnology and gene therapy has opened new horizons for precision regenerative techniques. This review presents a comprehensive overview of modern approaches in periodontal regeneration, highlighting their biological rationale, clinical potential, and future directions. Challenges in translational research and personalized therapy are also discussed to offer insight into the evolving landscape of periodontal medicine.
DOI: https://doi.org/10.52783/jchr.v15.i2.775
Moving with the Mind: A Correlational Study of Psychological Flexibility and Physical Activity in a University Setting
Get PDFIntroduction: Psychological flexibility is a crucial component of mental health and well-being, enabling individuals to navigate life’s challenges while maintaining a sense of purpose and direction. Physical activity is widely acknowledged for its extensive benefits, including enhanced mood, cognitive function, and cardiovascular health. With the rising prevalence of mental health issues among university students, identifying interventions that support psychological flexibility is of growing importance. Exercise has been proposed as a potential factor influencing psychological adaptability, yet its specific relationship remains insufficiently explored. This study aims to bridge this gap by investigating the correlation between psychological flexibility and physical activity levels among undergraduate university students.
Objectives: The primary goal of this study was to examine whether increased physical activity is associated with higher psychological flexibility among undergraduate students.
Methods: Following ethical approval, data were collected from 175 undergraduate students aged 18-24 years. Participants voluntarily reported their physical activity levels and psychological flexibility through standardized assessment tools. Inclusion criteria required students to be currently enrolled in undergraduate programs and willing to participate, while those with medical conditions preventing physical activity or undergoing psychological treatment were excluded. The study analyzed the relationship between these two variables using appropriate statistical methods.
Results: Statistical analysis revealed a positive correlation (r = 0.66) between physical activity and psychological flexibility, suggesting that students who engaged in higher levels of physical activity exhibited greater psychological adaptability. This indicates that physical activity may play a significant role in enhancing mental resilience.
Conclusions: The findings highlight the potential benefits of physical activity in fostering psychological flexibility among university students. These results support the inclusion of structured exercise programs in university wellness initiatives to enhance mental health outcomes. Future research may explore causation and intervention strategies to maximize psychological benefits.