bluuebunny/crossref_metadata_2025 huggingface dataset:
Electromechanical Properties of Modified BaTiO3 Ceramics
Authors: Chandra Kumar P. , Singh Janki N. , Kulkarni Ajit R. , Choudhary R.N.P. , Prasad Kamal
Published: October 2022

The microstructure, energy dispersive X-ray spectra, and field dependent polarization and electrostrictive strain characteristics of x(Ba0.7Ca0.3)TiO3–(1-x)Ba (Zr0.2Ti0.8)O3; x = 0, 0.5, and 1.0 synthesised using solid-state reaction process are discussed in this work. The X-ray diffraction process and scanning electron microscope were, respectively taken into use to examine the forming of single-phase compound and the surface morphology as well as elemental analyses of all of the samples. The grains sizes were found to lie between 3–12 μm and was largest for x = 0.5. The value of piezoelectric coefficient, converse piezoelectric effect (strain maximum to peak electric field), and electrostrictive coefficient were found to be the highest for x = 0.5 sample. Ba0.85Ca0.15Zr0.10Ti0.90O3 was shown to be a potential lead-free electrostriction material for industrial applications, particularly in positioning actuators, based on field-dependent polarisation and strain experiments at ambient temperature.
Improving the Oxidation Resistance of Polyphenylene Sulfide Fibers by Doping Copper Nanoparticles Loaded Halloysite Nanotubes
Authors: Qiu Tian , Wang Jin Ling , Xiang Heng Xue , Hu Ze Xu , Zhu Li Ping , Zhu Mei Fang
Published: October 2022

Polyphenylene sulfide (PPS) fiber is widely used in the fields of high-temperature filtration, protective clothing, electronics, automobile, and aircrafts sectors relying on its excellent heat and chemical resistance. However, PPS fiber is easily oxidized under high temperature, which vastly restricts its applications. In this study, using the copper nanoparticles loaded halloysite nanotubes (HNTs@Cu) as a nanofiller, we prepared a PPS composite fiber with improved oxidation resistance. The successful loading of copper nanoparticles into HNTs was demonstrated through TEM and elemental analysis. The crystallinity, orientation, thermal and mechanical properties of PPS nanocomposite fibers were investigated via DSC, XRD, WXRD, TGA and mechanical test. While the mechanical performance of the composite fibers was slightly decreased, the thermal stability was improved when comparing to the neat PPS fiber. The composite fiber with 1.0 wt.% loading of HNTs@Cu showed an over 100% retention rate of breaking strength after thermal oxidative aging, suggesting an improvement in oxidation resistance of PPS fiber. This work provides an effective and accessible method for improving the thermal stability and oxidation resistance of PPS fibers, which thereby helps to extend the applications of PPS fibers in high temperature environment.
W-Nb Co-Doped VO2 Films Realizing near Room-Temperature Transition and Satisfactory Thermochromic Performance for Smart Window
Authors: Jing Ming Han , Yang Jun Lin , Liu Yi , Zhao Zheng Jing , Wang Xiao Qian , Li Jing Bo , Jin Hai Bo
Published: October 2022

The W-Nb co-doped VO2 films are prepared through hydrothermal method. The effects of the Nb and W dopants are investigated respectively on the phase transition temperature (θc) and optical properties of VO2 by keeping the concentration of partner dopant at 1.0 at.%. The Nb doping induces a reduction of θc at a rate of ~ -13.0 °C per at.% Nb as Nb is less than ~1.5 at.%. For more than 1.5 at.% Nb, the θc shows a slight increase from ~23.0 °C. The W doping leads to a linear decrease of θc with a rate of ~ -17.2 °C per at.% W, more effective in reducing θc than the Nb dopant. However, the heavy W doping results in more serious deterioration of the solar energy modulation (ΔTsol) than the Nb doping. Therefore, taking use of the complementary advantages of W and Nb dopants, the 1.0 at.% W + 1.5 at.% Nb co-doped VO2 realizes the room-temperature transition at 23.0 °C with a satisfactory ΔTsol of ~9.6%, much better than the 1.5 at.% W + 1.0 at.% Nb co-doped which has a θc of ~22.1 °C and ΔTsol of ~5.3%. This work demonstrates the W-Nb co-doping is an effective doping formula in improving the performance of VO2 for smart window applications.
Tuning of Thermal and Electrical Properties of Polymer Dispersed Cholesteric Liquid Crystal
Authors: Mani Santosh , Mani Santhosh , Khosla Samriti , Sarawade Pradip
Published: October 2022

When a pure liquid crystal is dispersed into a suitable polymer to form micron-sized droplet, then it is called Polymer-dispersed liquid crystal (PDLC). In the present study, PDLC of different concentrations were prepared by dispersing a conducting polymer poly (3, 4–ethylenedioxy thiophene): poly (styrene sulfonate) into a cholestryl palmitate. The differential scanning calorimetry and fabry perot scattering studies were employed to study thermal and optical properties. It was found that the phase transition for PDLC occurs at a temperature different than those exhibited by pure liquid crystal. The behaviour of PDLC for parallel and perpendicular electric field has been investigated and the dielectric constant is determined. The value of dielectric constant and conductivity were found to increase with increasing concentration of polymer. The bistability and reflective properties of pure cholesteric liquid crystal can be minimized by dispersing polymer which makes material suitable for high contrast at large viewing angles.
Effect of the Combination of High Temperature and Fluid Fly Ash on the Compressive Strength of Concrete and its Dynamic Modulus of Elasticity
Authors: Merunka Milan , Ťažký Martin , Hela Rudolf
Published: October 2022

This paper deals with the effect of combining high temperature and fluidised fly ash, not only on the compressive strength of concrete but also on the determination of the dynamic modulus of concrete test bodies. The use of high-temperature fly ash in concrete mixes has become commonplace. However, the demand for this type of active admixture has increased to such an extent that it currently far exceeds supply, especially after selective non-catalytic nitrogen oxide reduction (SNCR) was introduced and the switch to low-temperature combustion units. This lack of supply makes it necessary to look for other alternative solutions to this situation. The partial replacement of high-temperature fly ash with fluidised bed fly ash appears to be a possible solution.
The Tourism-Led Development Strategy in Sri Lanka
Authors: Fernando Sriyantha
Published: October 2022

Sri Lanka has an ability become one of the best tourism countries (TCs) in Asia. However, it missed opportunities on a number of occasions due to inappropriate economic policies, continuous political violence, and wars. Since 1983 the Sri Lankan tourism sector was seriously affected by the nearly three decades of separatist war which ended in May 2009. Immediately after the end of war tourism in Sri Lanka bounced back and it now has become the engine of economic growth in post-war Sri Lanka. In this paper, a historical analysis has been undertaken to demonstrate how Sri Lanka miss matched their development strategies in terms of tourism, although the country had the potential to attract a record number of tourists. The post-war tourism boom has given Sri Lankans and the Sri Lankan tourism sector new hopes and optimism. This paper demonstrates that the Sri Lankan tourism sector has potential and opportunities to play a vital role in the post-war inclusive development strategy in terms of generating much needed foreign exchange, poverty alleviation via employment generation, accelerating economic growth and uplifting living standards of all Sri Lankans.
Investigation and Evaluation of a Multimodal Pilot Assistance System for Helicopter Operations
Authors:   German Aerospace Center (DLR), Martini Tanja ,   Airbus Helicopters, Schmidt Jürgen , Jones Michael , Mevenkamp Philipp , Peinecke Niklas
Published: October 2022

To maintain offshore wind farms, helicopters are often used for the transportation of maintenance personnel and equipment. Offshore missions present numerous challenges for pilots and crew, due to environmental factors (e.g. lack of visual cues over the sea surface) and weather conditions (e.g. fog and low clouds). In order to enhance safety and operational capability of helicopters, a pilot assistance system especially developed for offshore operations has been investigated within the project HeliPAS-OW. The multimodal pilot assistance system consisting of a head-up visual display system, sensor-based system for obstacle detection, specific offshore route planning and a navigation system have been tested. Results from an initial test campaign conducted using the research flight simulator, the Air Vehicle Simulator (AVES), are presented. This was accomplished as collaboration between the project partners from industry and research. The evaluation of the results focuses on the impact on workload and situational awareness, as well as the possibilities for optimizing the system. The results show that the pilot assistance can improve the situational awareness and reduce the workload in a degraded environment.
The Design of Pilot Cueing for the Degraded Visual Environment Mitigation (DVE-M) System for Rotorcraft
Authors:   US Army DEVCOM AvMC, Szoboszlay Zoltan , Godfroy-Cooper Martine , Miller Joel
Published: October 2022

The Degraded Visual Environment Mitigation (DVE-M) program was initiated to develop and evaluate numerous technologies that would enable rotorcraft to intentionally operate in poor visibility conditions. The goal was to provide recommendations to the Future Vertical Lift program and to various upgrade programs of the existing fleet of military rotorcraft. The DVE-M program was implemented by the U.S. Army Combat Capabilities Development Command Aviation and Missile Center (DEVCOM AvMC). Technologies developed and evaluated fell into one of three categories: 1) sensors and sensor fusion, 2) pilot cueing, 3) flight control and guidance. These technologies were integrated to work together to enable the pilot to operate in DVE. This paper focuses on the design of the cueing system only. It discusses reasons for the design choices and lessons learned. This paper also provides an overview of the flight demonstrations and simulations conducted for background.
Sustaining Performance and Vigilance during Extended Unmanned Aerial System Operations
Authors:   US Army Aeromedical Research Lab, Kelley Amanda , Hayes Amanda , Mackie Ryan
Published: October 2022

Current scheduling of unmanned aerial system (UAS) operators often allows for 8 hour shifts, where operators are typically exposed to low event rate tasks, thus leading to the occurrence of underload. While a long, rich history of vigilance research exists, few studies have examined the threshold at which performance decrements occur in UAS operators in operational settings and the utility of strategies to mitigate vigilance and performance decrements. This study evaluated the performance thresholds relative to time-on-task during a 4 hour simulated UAS mission. Additionally, this study evaluated the effectiveness of countermeasure strategies (secondary task and ambient lighting) on sustaining performance and vigilance during simulated UAS missions. Finally, the study demonstrated patterns of psychophysiological indicators of operator states (comparing high and low workload). Findings suggest that performance begins to decline after 15 minutes on task and plateaus by 45 minutes on task for both workload conditions. There was insufficient evidence to support any of the countermeasures, yet patterns in EEG are consistent with past findings regarding shifts in perceived workload.
Glyphosate, AMPA and glyphosate-based herbicide exposure leads to GFAP, PCNA and caspase-3 increased immunoreactive area on male offspring rat hypothalamus
Authors: Duque-Díaz Ewing , Hurtado Giraldo Hernán , Rocha-Muñoz Linda P. , Coveñas Rafael
Published: October 2022

Glyphosate, aminomethylphosphonic acid (AMPA), and glyphosate-based herbicides altered the neuroendocrine axis, the content of brain neurotransmitters, and behavior in experimental animal models. Glyphosate alone, AMPA or Roundup® Active were administered to postpartum female rats, from P0 to P10, and their water consumption was measured daily. The immunoreactivity for glial fibrillary acidic protein (GFAP), proliferating cell nuclear antigen (PCNA) and caspase-3 was measured in the anterior, medial preoptic, periventricular, supraoptic and lateroanterior hypothalamic nuclei of P0-P10 male pups after exposure, via lactation, to these xenobiotics. Puppies exposed to glyphosate had a moderate level of GFAP with no overlapping astrocyte processes, but this overlapping was observed after Roundup® Active or AMPA exposure. After being exposed to Roundup® Active or AMPA, PCNA-positive cells with strong immunoreactivity were found in some hypothalamic nuclei. Cells containing caspase-3 were found in all hypothalamic nuclei studied, but the labeling was stronger after Roundup® Active or AMPA exposure. Xenobiotics significantly increased the immunoreactivity area for all of the markers studied in the majority of cases (p<0.05). AMPA or Roundup® Active treated animals had a greater area of PCNA immunoreactivity than control or glyphosate alone treated animals (p<0.05). The effects observed after xenobiotic exposure were not due to increased water intake. The increased immunoreactivity areas observed for the markers studied suggest that xenobiotics induced a neuro-inflammatory response, implying increased cell proliferation, glial activation, and induction of apoptotic pathways. The findings also show that glyphosate metabolites/adjuvants and/or surfactants present in glyphosate commercial formulations had a greater effect than glyphosate alone. In summary, glyphosate, AMPA, and glyphosate-based herbicides altered GFAP, caspase-3, and PCNA expression in the rat hypothalamus, altering the neuroendocrine axis.
The Outcome of Partial Pulpotomy in Traumatized Permanent Anterior Teeth – A Systematic Review and Meta-Analysis
Authors: Madhumita S , Chakravarthy Dhanavel , Vijayaraja S , Kumar Ajith S , Kavimalar DS
Published: October 2022

Background:

Partial pulpotomy is a procedural intervention that can maintain the vitality of pulp during the management of traumatized permanent teeth with pulpal involvement.

Aim:

To evaluate whether partial pulpotomy can be considered a reliable conservative treatment option for treating traumatized permanent anterior teeth with pulpal involvement.

Methodology:

A computerized systematic search was performed in PubMed, Science Direct, Cochrane, and LILACS databases from 1980 to May 2021. Five studies were included in the final analysis. Quality assessment, Meta-analysis, and Publication bias of the studies were evaluated. This systematic review was registered in PROSPERO (ID – CRD42021262031).

Result:

The comprehensive Meta-Analysis Software was used. The test of the heterogeneity was analysed using Cochran's Q statistics. The Q value was 7.186 (df = 6) with a P value of 0.3 and I2 as 16.5%. The studies were considered homogenous, and the fixed-effect model showed an overall point estimate of 0.89 with a 95% confidence interval (0.86–0.91). The Begg and Egger funnel plot indicated that there was no publication bias in the included studies.

Conclusion:

Evidence indicates that partial pulpotomy may be considered a reliable definitive treatment option in asymptomatic traumatized permanent anterior teeth with exposed pulp rather than total pulpotomy.
Laser Irradiation Prevents Root Caries
Authors: Lepri César P. , De Castro Denise T. , Geraldo-Martins Vinícius R. , Faraoni Juliana J. , Palma-Dibb Regina G.
Published: October 2022

Context:

A promising option for the prevention of dental caries is the use of laser irradiation.

Aims:

Evaluate the effects of Er:YAG, Nd:YAG, and CO2 laser irradiation, associated or not to 2% sodium fluoride (2% NaF), on root caries prevention.

Material and Methods:

One hundred and four human root dentin samples were divided in eight groups (n = 13). A 9-mm2-area on each dentin sample was delimited and treated as follows: G1: no treatment (control); G2: 2% NaF; G3: Er:YAG; G4: 2% NaF + Er:YAG; G5: Nd:YAG; G6: 2% NaF + Nd:YAG; G7: CO2; G8: 2% NaF + CO2. When used, the 2% NaF was applied before irradiation for 4 min. The samples were subjected to a 2-week cariogenic challenge, consisted of daily immersion in de-remineralizing solutions for 6 h and 18 h, respectively. Knoop hardness (KHN) were evaluated (10 g and 20 s) at different depths from the dentin surface. The samples (n = 3) were prepared for scanning electron microscopy (SEM). Microhardness data were analysed by one-way analysis of variance (ANOVA) and Fisher's test (α = 5%).

Results:

The Er:YAG laser group (KHN = 41.30) promoted an increase in acid resistance of the dentin (P < 0.05) when compared to all groups. There was no synergism between laser irradiation and 2% NaF application. Morphological changes were observed after irradiation with all lasers; carbonization and cracks were also observed, except when Er:YAG were used.

Conclusions:

Er:YAG laser irradiation can safely increase the acid resistance of the dentin surface of the root, since it promoted a significant increase in surface hardness. The application of 2% NaF did not result in a synergistic effect.
Antibacterial Efficacy of Manuka Honey, Ocimum Sanctum, Curcuma Longa and 0.2% Chlorhexidine Mouthwash on the Level of Streptococcus Mutans and Lactobacillus Acidophilus - A Randomized Controlled Trial
Authors: Jain Ankita , Singh Vikas , Lukram Anooj , Chatterjee Silpi , Khan Asim Mustafa , Dawar Geetanshu
Published: October 2022

Objective:

To assess the effects of Manuka honey, Ocimum sanctum, Curcuma longa, and 0.2% chlorhexidine mouthwash on Streptococcus mutans and Lactobacillus acidophilus levels.

Material and Methods:

A randomized controlled trial will be conducted on dental students of Teerthanker Mahaveer Dental College and Research Centre, Moradabad. The study participants will be divided into four groups. Each group will have a total of 20 individuals. By using a lottery system, Group A (Manuka honey mouthrinse), Group B (Ocimum sanctum mouthrinse), Group C (Curcuma longa mouthrinse), and Group D (0.2% chlorhexidine mouthrinse) will be chosen. To match the circadian cycle, saliva will be collected at baseline and again after 2 weeks between 10 and 10.30 a.m. The sterile container will subsequently be delivered to the microbiological laboratory and processed as soon as possible to measure Streptococcus mutans and Lactobacillus acidophilus count. For 2 weeks, participants were told to use 10 mL of mouthrinse twice daily.

Results:

The mean oral hygiene index-simplified (OHI-S) score of all the four groups showed reduction in their scores from baseline to after the study period. For both S. mutans and L. acidophilus, there was a substantial Percentage Reduction (PR) between the prerinse and postrinse samples in all four groups.

Discussion:

Because quantitative actions play a crucial part in the caries disease process, the changes in microbial activity before and after administration of experimental mouthwashes were examined.

Conclusion:

Essential oil aqueous extracts were as efficient antibacterial mouthwashes as chlorhexidine and iodine mouthwashes.
Knowledge, Attitude and Practices Among Sanitation Workers Regarding SARS-CoV-2 Prevention – A Cross-Sectional Study
Authors: Kumar Jadhav S. , Manjunath BC , Sabbarwal Bhavna , Chauhan Neha , Yadav Vipul , Kumar Adarsh
Published: October 2022

Aim:

To evaluate knowledge, attitude and practices among sanitation workers regarding SARS-CoV-2 prevention during hospital waste management.

Materials and Methods:

A cross-sectional study was conducted among 426 sanitation workers using an interviewer-administered questionnaire to assess the knowledge, attitude and practices of the study participants. The unpaired t-test and Spearman's correlation were used to find the mean difference and correlation among different study variables. Statistical significance was set at 5% (confidence interval 95%).

Results:

The mean knowledge score of the participants was found to be 7.15 ± 2.02. About 93.7% of the participants had good knowledge about COVID-19. About 64.3% of the participants strongly agreed that COVID-19 is a life-threatening disease. Regarding practices, a majority reported (69.7%) that they washed hands frequently using water and soap. A significant positive correlation was found between knowledge, attitude, practices and education, indicating a favourable work environment in hospital settings.

Conclusion:

More than half of the sanitation workers and housekeeping staff had adequate knowledge of COVID-19, and their attitudes were found to be favourable. They also had satisfactory practices, which may be a result of the prompt training and sensitization of sanitation workers by the authorities.

Clinical Relevance:

Sanitation workers come under the essential services category and their knowledge, attitude and practices needed to be assessed and updated in the concerned area for their protection and better management of biomedical waste, especially in the current pandemic situation.
Comparative Effect of 1.2% Atorvastatin Gel and 1.2% Rosuvastatin as a Local Drug Delivery in Treatment of Intra-Bony Defects in Chronic Periodontitis
Authors: Soni Ashish , Raj Swati , Kashyap Laxmikant , Upadhyay Amit , Agrahari Vikas Chandra , Sharma Anil
Published: October 2022

Background:

The present study was aimed to evaluate the efficacy of 1.2% Atorvastatin (ATV) with 1.2% Rosuvastatin (RSV) as local drug delivery for treatment of Chronic Periodontitis (CP).

Materials and Methods:

Forty patients were equally divided into two groups. Group A underwent scaling and root debridement and 1.2% ATV gel (1.2 mg/0.1 mL) was placed, whereas group B received scaling and root debridement and RSV (1.2 mg/0.1 ml) was placed.

Results:

The results showed that both the groups had improvement in all the recorded parameters, and the results obtained were statistically significant. When comparison was made between the groups, no significant difference was obtained between atorvastatin and rosuvastatin at baseline in all recorded parameters. However, after 6 months significant improvement was recorded in CAL (Clinical attachment level) and PD (Probing depth). The plaque index (PI) and gingival index (GI) score however showed improvement, but it did not attain the level of significance.

Conclusion:

The present study showed improvement in clinical parameters with the use of ATV and RSV gel when used in combination with scaling and root planing (SRP) in CP patients. Patients with RSV gel showed up significantly better than the ones in which ATV gel was placed.
Relationship between Sense of Coherence, OHRQoL, and Dental Caries among Nursing Students in South India
Authors: Haricharan Praveen Bhoopathi , Almudarris Ban , Azim Sabrin Ali , Albanna Farah Saed , Elkareimi Yaser , Kuduruthullah Syed
Published: October 2022

Background:

Dental caries is one of the most common dental diseases that affect all population and is associated with the avoidance of care. Research has reported that sense of coherence (SOC) is related to many aspects of health including oral health. SOC determines the quality of health and might have a direct association with the development of subjective assessments of oral health.

Objectives:

To find the association between SOC, Oral Health-Related Quality of Life (OHRQoL) and caries status among nursing college students in southern state of India.

Design:

Cross-sectional design using questionnaire and assessment of caries status.

Participants:

Nursing students from south India.

Methods:

Convenience sampling method was followed and students who were present on the day of the study and consented to participate were included in the study. The total study sample consisted of 494 nursing students. SOC and OHRQoL were measured by a self-administered questionnaire; caries status was assessed using Decayed, Missing and Filled Tooth (DMFT) index.

Results:

Association between SOC and Oral Health Impact Profile (OHIP) and caries status and OHIP was found to be statistically significant. Correlation between dental caries and OHIP was found to be statistically significant, with R-value –0.251 shows that OHIP is negatively correlated with caries status.

Conclusion:

SOC as a psychosocial resource is capable of facilitating the motivation for positive oral health behaviours. These resources along with socio-economic and demographic factors can create an environment that is partially responsible for the individuals' cognitive and physical functions that can express themselves as the individuals' well-being and positive health behaviours.
Novel Management of Internal Root Resorption with Vertical Root Fracture using Mineral Trioxide Aggregate - A Case Report
Authors: Karumaran Chellaswamy Savarimalai , Ramachandran Anil Kumar , Chandrasekaran Nirmala , Manuel Corrine Esther , Kattula Deepthi
Published: October 2022

Introduction:

This case report presents the diagnosis and management of extensive internal root resorption (IRR) in a 17-year-old male patient, with a 9-year-old history of trauma.

Method:

The affected tooth 21 was associated with vertical root fracture (VRF) and incomplete apex closure with a substantial loss of tooth structure, including dentin and cementum. Encouraged by a healthy periodontal condition, the choice was made to use mineral trioxide aggregate (MTA) to reconstruct and reinforce the resorptive defect and the fractured segment. A composite veneer was placed to enhance the aesthetics.

Result:

A follow-up of the patient after 2 years revealed healing with a resolution of the lesion.

Conclusion:

This case report highlights the use of MTA as a lone-standing filling material for the treatment of IRR with VRF in a non-vital immature tooth.
Perceptions and Challenges of a First-Year Dental Student – A Cross-Sectional Study
Authors: Shinh Manhar Kaur , Kshirsagar Rajesh , Narang Ridhi , Kulkarni Praveena Venkatesh , Singh Amanish , Kaur Harjupinder
Published: October 2022

Introduction:

Undergraduate dental training is demanding and rigorous, unaware students face a lot of challenges after entering the course. Thus, the study aims to find out from a dental sophomore the challenges they face during the first year of dental school.

Methodology:

An e-questionnaire study was conducted on 932 second-year Bachelor of Dental Surgery students of India. The questions help us gauge problems and hurdles faced by a dental sophomore like information related to difficulty levels, laborious nature and so on. Chi-square test is to find out relativity and association between the variables.

Results:

Pre-clinical prosthodontics was found the most laborious and a gender-wise significant difference (P < 0.01) was noted amongst females (437, 71.06%) and males (157, 49.53%).

Conclusion:

This study highlighted that students are usually unaware about the course, the type of content reading, learning, laborious nature of practical work and so on.
Assessment of Clinical Depression in Abdominally Obese Subjects with Periodontal Disease
Authors: Acharya Sheetal , Satpathy Anurag , Beura Rajdeep , Datta Pratiti , Das Utkalika , Mahapatra Pranab
Published: October 2022

Background:

Depression is a commonly prevailing condition that goes undetected in clinical settings. Both abdominal obesity and periodontal disease have a bearing on mental health and have an impact on the quality of life.

Objective:

To assess the level of clinical depression in abdominally obese subjects with periodontal disease.

Methods:

Two hundred and ten subjects with a mean age of 37.45 ± 9.59 years (males = 117; females = 93) were grouped as per their abdominal obesity and periodontal status and assessed for their clinical depression levels (mental health) using the Centre for Epidemiologic Studies-Depression Scale (CES-D). Collected data were analysed.

Results:

The clinical depression score significantly varied in subjects with different periodontal status in both non-obese (F(2,102) = 113.66,P< 0.0001) and abdominally obese subjects (F(2,102) = 132.04,P< 0.001). Significantly higher depression score was demonstrated in healthy (P< 0.001), gingivitis (P< 0.001), and periodontitis (P< 0.001) groups in abdominally obese subjects.

Conclusion:

Clinical depression is significantly associated with abdominal obesity and periodontal disease in subjects with abdominal obesity and severe periodontal disease demonstrating higher depression scores.
Efficacy of Topical Tulsi (Ocimum sanctum) Paste for the Management of Oral Submucous Fibrosis – A Clinical Study
Authors: Biswas Deepti , Naik Zameera , Kumar Lokesh S , Patil Namratha , Bagewadi Anjana
Published: October 2022

Context:

Oral submucous fibrosis (OSMF) is a chronic insidious oral potentially malignant disorder characterized by increased collagen deposition and reduced collagen degradation causing burning sensation and difficulty in mouth opening.

Aim:

To assess the efficacy of topical Tulsi (Ocimum sanctum) paste for the management of OSMF.

Settings and Design:

Institution-based clinical trial.

Materials and Methods:

The study included a total of 60 OSMF patients categorized into three Groups A, B and C (20 in each) depending on the severity according to Lai DR et al. classification. The patients were advised for topical Tulsi paste application and were evaluated for the reduction in the burning sensation and improvement in mouth opening every month for 3 subsequent months using the numeric pain rating scale (NRS) and a Vernier calliper, respectively.

Statistical Analysis:

The baseline and 3-month recordings were subjected to inter- and intra-group statistical analysis using Kruskal–Wallis analysis of variance (ANOVA), Mann–Whitney U, one-way ANOVA, Tukey's multiple post-hoc and Wilcoxon matched-pairs tests.

Results:

There was a reduction in the burning sensation and improvement in the mouth opening in all three groups. The reduction in the burning sensation was statistically significant among all the groups (P < 0.05) and the NRS scores after 3 months among the three groups were not statistically significant (P > 0.05). There was a statistically significant difference (P < 0.05) in the improvement of mouth opening between Group A and B; A and C; but not between B and C.

Conclusion:

Tulsi paste showed a significant reduction in the burning sensation and improvement of the mouth opening thereby proving to be a safe and promising medicament for OSMF.
Comparison of p63 immunohistochemistry and shear wave elastography in the diagnosis of indeterminate breast lesions
Authors: Sridhar Ranjith Kumar , Chandru R , Pavithra V , Raj D Rajiv , Dev Bhawna , Sundaram Sandhya , Ramya R
Published: October 2022

Purpose:

To evaluate the accuracy of breast shear wave elastography (SWE) and p63 immunohistochemistry (IHC) in the diagnosis of indeterminate breast lesions.

Methods:

Based on detailed clinical examination and a combination of X-ray mammography/B-mode ultrasound with SWE, a total of 40 patients with breast lumps (BI-RADS 4) were included. Patients with previous diagnosis of breast cancer and a previous history of surgery, chemotherapy, or radiotherapy in the same breast as the present lesion were excluded. Core needle biopsy of the breast lesion was performed, and p63 IHC staining was performed. A final histopathological report of the definitive procedure was considered as the gold standard. The sensitivity, specificity, positive (PPV) and negative predictive values (NPV), and accuracy were calculated for each modality.

Results:

The mean age of the patients included in the study was 50.85 ± 13.53 years. Of the 40 patients recruited, 23 were clinically malignant and 17 were benign. The sensitivity, specificity, PPV, NPV, and accuracy of SWE were 91.3%, 94.1%, 95.5%, 88.9%, and 92.5% and those of p63 IHC were 95.7%, 100%, 100%, 94.4%, and 97.5%, respectively. Overall, the parametric values were higher for p63 IHC as compared to clinical examination and elastography. The area under the ROC curve (AUC) for p63 IHC (.978) was higher than those for SWE (.927) and clinical examination (.898).

Conclusion:

SWE and p63 IHC are highly reliable novel modalities that demonstrate enhanced diagnostic accuracy of indeterminate breast lesions aiding in the early initiation of appropriate treatment and reducing the number of women subjected to biopsy or short-term follow-up for benign-appearing solid breast lesions.
Short-Term Electrocardiographic and Echocardiographic Effects of Levothyroxine Replacement in Adults with Newly Diagnosed Hypothyroidism
Authors: Vikram Shekhawat , Mohanty Soumitra , Behera Vineet , Ananthakrishnan Ramamoorthy , Karanth Jnanaprakash B. , Mahadev Nagargoje
Published: October 2022

Background and Aims:

Thyroid hormones play a key role in modulating the cardiac function and structure. Expectedly, thyroid hormone deficiency in primary hypothyroidism has a profound and clinically relevant effect on the cardiac structure and function manifesting in characteristic electrocardiographic and echocardiographic (ECHO) abnormalities. The aim is to evaluate the effects of levothyroxine replacement therapy on the electrocardiographic (ECG) and ECHO changes in patients with primary hypothyroidism by assessing the changes in ECG and ECHO before and after 6 weeks of optimal levothyroxine (LT4) treatment in adults with newly diagnosed primary hypothyroidism.

Methodology:

Prospective, observational study conducted in the department of medicine in an armed forces tertiary care teaching hospital from October 2018 to April 2021. We studied newly diagnosed adults with primary hypothyroidism who were treated with optimal LT4 replacement. Descriptive statistics along with Student’s t-test and Chi-square test were used to determine the statistical significance.

Results:

In 152 participants, the mean age was 41.0 ± 13.2 years and 79% were female. After 6 weeks of LT4 treatment, the proportion of participants with abnormal ECG findings reduced significantly (from 77% to 14.5%, P < 0.0001) with a significant reduction in those having sinus bradycardia (P < 0.0001) and low-voltage complexes (P < 0.0001). On ECHO, there was a significant improvement in left ventricular ejection fraction (P < 0.001), fractional shortening (P < 0.001), and a significant reduction in myocardial thickness parameters. The systolic and diastolic function improved significantly after 6 weeks of treatment. The proportion of patients without pericardial effusion increased from 34.9% to 79.6%.

Conclusion:

Replacement therapy with LT4 in newly diagnosed primary hypothyroid patients substantially improves cardiac structure, systolic and diastolic function and has a positive impact on underlying pericardial effusion. A large, prospective, trial is necessary to determine the long-term effects after thyroid hormone replacement.
Multidisciplinary Investigations of Sustained Malaria Transmission in the Greater Mekong Subregion
Authors: Cui Liwang , Sattabongkot Jetsumon , Aung Pyae Linn , Brashear Awtum , Cao Yaming , Kaewkungwal Jaranit , Khamsiriwatchara Amnat , Kyaw Myat Phone , Lawpoolsri Saranath , Menezes Lynette , Miao Jun , Nguitragool Wang , Parker Daniel , Phuanukoonnon Suparat , Roobsoong Wanlapa , Siddiqui Faiza , Soe Myat Thu , Sriwichai Patchara , Yang Zhaoqing , Zhao Yan , Zhong Daibin
Published: October 2022

In the course of malaria elimination in the Greater Mekong Subregion (GMS), malaria epidemiology has experienced drastic spatiotemporal changes with residual transmission concentrated along international borders and the rising predominance of Plasmodium vivax. The emergence of Plasmodium falciparum parasites resistant to artemisinin and partner drugs renders artemisinin-based combination therapies less effective while the potential spread of multidrug-resistant parasites elicits concern. Vector behavioral changes and insecticide resistance have reduced the effectiveness of core vector control measures. In recognition of these problems, the Southeast Asian International Center of Excellence for Malaria Research (ICEMR) has been conducting multidisciplinary research to determine how human migration, antimalarial drug resistance, vector behavior, and insecticide resistance sustain malaria transmission at international borders. These efforts allow us to comprehensively understand the ecology of border malaria transmission and develop population genomics tools to identify and track parasite introduction. In addition to employing in vivo, in vitro, and molecular approaches to monitor the emergence and spread of drug-resistant parasites, we also use genomic and genetic methods to reveal novel mechanisms of antimalarial drug resistance of parasites. We also use omics and population genetics approaches to study insecticide resistance in malaria vectors and identify changes in mosquito community structure, vectorial potential, and seasonal dynamics. Collectively, the scientific findings from the ICEMR research activities offer a systematic view of the factors sustaining residual malaria transmission and identify potential solutions to these problems to accelerate malaria elimination in the GMS.
Desafios contemporâneos para profissionais de publicidade
Authors: Schuch Lucas , Petermann Juliana
Published: October 2022

Este artigo tem o objetivo de sistematizar os desafios que profissionais de publicidade enfrentamem um campo que demanda atualizações constantes e segue em transformação. Partimos de umaanálise bibliográfica, a partir de autores e autoras do campo da publicidade, e nos valemos dascategorias propostas por Canavilhas (2015), que aponta os desafios para os profissionais dejornalismo. Procuramos investigar então tensionamentos a partir do seguinte questionamento:quais são os principais desafios contemporâneos que profissionais enfrentam no campo dapublicidade e quais são as soluções que o mercado vem encontrando para o enfrentamento destesobstáculos? Trazemos como indícios de resposta a esta problemática complexa, 16 desafioscontemporâneos na publicidade divididos em quatro categorias: desafios profissionais,tecnológicos, econômicos e sociais.
Perspectivas e desafios da Comunicação na cultura digital
Authors: Follain de Figueiredo Vera Lúcia , Freire Carauta Alexandre Augusto
Published: October 2022

A Alceu 47 integra-se às iniciativas do Departamento de Comunicação da PUC-Rio para, ao completar 70 anos, discutir os rumos, experimentações e desafios deste campo no contemporâneo hipermidiático. A edição conjuga estudos cujas distintas perspectivas teóricas ampliam e aprofundam o debate quanto à comunicação do futuro – no jornalismo, na publicidade, no audiovisual: seus caminhos narrativos; suas implicações socioculturais, políticas, econômicas em meio à cibercultura e à lógica do algorítmico; seus entrelaces com a memória coletiva e o tempo histórico; suas competências multidisciplinares, instadas a resguardar compromissos sociais, éticos, humanitários num ecossistema midiático híbrido, rizomático, hipertextual.
Alegorias do regime autoritário:
Authors: De Paula Eduardo Andre , Carlos Magno Maria Ignes , Abramovictz Felipe
Published: October 2022

Este artigo pretende refletir sobre a presença de conteúdos alegóricos, satíricos e metafóricos de natureza política, no cinema destinado ao público infantil realizado durante o regime militar brasileiro – especificamente, nos anos da Abertura Política (1974-1985). Parte-se do pressuposto de que o recurso alegórico, amplamente presente no cinema brasileiro, atuava como vetor de crítica ao regime, e também estava presente no cinema para crianças. A reflexão ocorre a partir de três filmes: Maneco, o Super Tio (1978), Os Saltimbancos Trapalhões (1981) e Os Paspalhões e o Pinóquio 2000 (1982).
ESTUDO DA PRODUÇÃO DE ARGAMASSAS DE REVESTIMENTO CONTENDO AREIA DE BRITAGEM
Authors: Tiecher F. , Marcon E.
Published: October 2022

As areias obtidas da britagem de rochas vêm sendo largamente consumidas em regiões onde a areia natural é escassa, contudo, devido às suas características, ainda há dificuldade de empregá-las em revestimentos de argamassa. O objetivo do presente estudo foi avaliar as características de argamassas de revestimento produzidas com areias de britagem. Nesta pesquisa foram avaliadas duas areias de britagem oriundas de rochas distintas, bem como uma areia natural (referência), as quais foram caracterizadas através de análise granulométrica, teor de finos, massas específica e unitária. As argamassas produzidas foram avaliadas tanto no estado fresco, quanto no endurecido, através de ensaios de espalhamento na mesa consistência, retenção de água, resistência à tração na flexão e à compressão, resistência de aderência, absorção de água. Os resultados obtidos mostraram que o teor de finos presente nas areias interferiu na consistência no estado fresco, mas não comprometeu a retenção de água das argamassas. No estado endurecido verificou-se que o agregado com maior teor de finos resultou em maiores resistências à compressão e à tração, devido ao refinamento dos poros. No entanto, a resistência de aderência à tração foi comprometida, devido ao aumento da retração da argamassa contendo mais finos.
MICROINTERVENÇÕES URBANAS COLABORATIVAS NO CONTEXTO DAS CIDADES CONTEMPORÂNEAS
Authors: Plaza Rizo Laura , Ramos Suzany Rangel , Ramos Larissa Leticia Andara , Oliveira Hyria Fraga
Published: October 2022

A cidade contemporânea, resultante de um processo de urbanização fragmentado e tendencioso, carrega consigo a problemática da carência de espaços públicos. Tendo em vista esse cenário, discute-se a importância da reconquista desses espaços através de práticas que buscam ressignificá-los. As transformações urbanas aqui individualizadas como "microintervenções urbanas colaborativas" surgem da necessidade de superar os desafios da cidade que não conseguem ser resolvidos pelo planejamento urbano tradicional. Dessa forma, busca-se apresentar um panorama das "microintervenções urbanas colaborativas" no contexto dos municípios de Vila Velha e Vitória - ES, através da identificação, caracterização e mapeamento dessas práticas. A pesquisa é desenvolvida em três etapas: Contextualização do tema; Identificação e mapeamento; e Analises. Ao apresentar a implantação das intervenções espera-se disseminar a importância e eficiência das práticas criativas para a transformação socioespacial, a fim de incentivar e fomentá-las no contexto urbano.
DIVERSIFICAÇÃO DO USO APLICADO À FUNÇÃO SOCIAL DOS ESTÁDIOS E ARENAS BRASILEIROS
Authors: Silva Luis Felipe de Oliveira , Carletto Consuelo
Published: October 2022

Este artigo busca compreender as mudanças na relação entre a cidade, pessoas e os estádios e arenas esportivas, em suma aquelas que apresentam capacidade para utilização diversificada. A princípio buscou-se traçar correlações metodológicas através da análise comparativa dos dados, atribuindo a origem deste tipo de edificação à passionalidade do futebol pelo torcedor brasileiro. Na sequência observou-se os efeitos de causa-consequência sobre a construção, renovação ou readequação de diversos estádios construídos à época do regime ditatorial brasileiro durante o evento da Copa do Mundo de 2014, onde seguindo a tendência global de modalizar a maneira como o consumo se dá nestes lugares, evidenciou a vacância dos espaços e o possível desperdício de verba pública. Por fim, é analisada a relevância da flexibilidade deste tipo de construção, que fora essencial no ano de 2020 em todo o mundo servindo como hospitais de campanha para combate à pandemia do Coronavirus e o Covid-19, sendo necessários a reintegração destes estádios e arenas ao cotidiano político socioeconômico das cidades.
IMPACTO DA TIPOLOGIA QUE COMPÕE A PAISAGEM URBANA NAS EXPANSÕES DA CIDADE
Authors: Cenci João Henrique , Oliveira Wagner Mazetto
Published: October 2022

O trabalho expõe a paisagem urbana que vem sendo criada em várias cidades brasileiras através do Minha Casa Minha Vida, o principal programa habitacional nacional brasileiro desde 2009, com a construção de conjuntos dotados de centenas de unidades habitacionais idênticas. Trata das tipologias habitacionais e urbanas em conjunto com a inserção e articulação com a cidade e seu impacto na qualidade de vida urbana das populações atendidas pela política habitacional em debate. Como resultados esboça a importância do conceito de bem-estar urbano e sua conexão com as necessidades da população. Ressalta a importância da integração entre setores públicos em conjunto com a participação cidadã, buscando gerar conjuntos multifuncionais, integrativos e agradáveis. (Tipo de pesquisa: produto de disciplina – estágio: finalizada)
IMPACTO DO USO DE PAREDES SEMIENTERRADAS NO DESEMPENHO TERMOENERGETICO: ESTUDO DE CASO PARA A ZONA BIOCLIMÁTICA 7
Authors: Guarda Emeli Lalesca Aparecida da Guarda , Callejas Ivan Julio Apolonio Callejas , Durante Luciane Cleonice , Apolonio Raquel Moussalem , Domingos Renata Mansuelo Alves
Published: October 2022

Este trabalho tem por objetivo analisar o impacto da aplicação de paredes semienterradas no desempenho termoenergético de uma habitação de interesse social localizada em clima de Savana, implantada em zona bioclimática ZB7. A metodologia consiste em simulações no software EnergyPlus, utilizando o input GroundDomain: Basement, avaliação da carga térmica pelo método de balanço térmico e indicador de graus-hora de resfriamentos, para o qual estabeleceram-se os valores de 29 e 22°C, para resfriamento e para aquecimento, respectivamente, definidos a partir da faixa de conforto térmico adaptativo. Observa-se que a incorporação da estratégia proporciona reduções na carga térmica para os quartos de até 45% e nos graus-hora de resfriamento de cerca de 13.5%, em relação à habitação convencional. Evidencia-se, assim, que a adoção de massa térmica para resfriamento resulta em impactos positivos no desempenho termoenergético de habitações localizadas na zona bioclimática ZB7.
DESEMPENHO LUMINOSO DE SHED INTEGRADO A PRATELEIRA DE LUZ EM AMBIENTE DE CIRCULAÇÃO
Authors: Mapelli-basilio Y. R. , Barros M. C. de S. L. S. , Carneiro S. M. R. , Fraga V. C. , Laranja A. C.
Published: October 2022

Aberturas zenitais em climas tropicais úmidos contribuem na redução dos gastos com iluminação artificial, podendo, porém, acarretar ganhos excessivos na iluminação natural. Por outro lado, dispositivos sombreadores são boas estratégias para controle desta luminosidade. A pesquisa tem como objetivo analisar o desempenho de abertura zenital shed integrada à prateleira de luz em ambiente de circulação em Vitória-ES. A metodologia envolveu simulações com o software TropLux 8 e Dialux, nos céus padrões da CIE, Céu 3 (encoberto), Céu 7 (parcialmente nublado) e Céu 12 (claro). O ambiente simulado trata-se de circulação, com abertura zenital shed integrada à prateleira de luz nas orientações Norte, Sul, Leste e Oeste. As iluminâncias foram analisadas nos intervalos das UDIs (Useful Daylight Illuminances) e Autonomia de luz natural. Constatou-se que para todas as orientações e céus analisados o shed integrado ou não à prateleira de luz permite uma autonomia de luz natural de 100% nos horários entre 8h e 16h. Os resultados das UDIs mostram que a prateleira de luz só se faz relevante quando orientada para Norte nos Céus 7 e 12. As aberturas zenitais proporcionaram uma economia de energia com iluminação artificial podendo chegar à cerca de 350 kWh anual.