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The effectiveness of triangular baffles in enhancing heat transfer within corrugated tubes is examined numerically in this study. Two key parameters influencing performance are examined: baffle placement (staggered and aligned) and their angles of attack (0°, 15°, 30°, and 45°). Heat transfer, friction, as well as performance metrics are comprehensively examined and compared for both configurations. The finite element method (FEM) implemented in CFD software COMSOL Multiphysics 6.1 is employed for simulations across a range of Reynolds numbers (100-400). Results reveal significant heat transfer improvements due to the proposed baffle configurations. Notably, aligned baffles with a 30° angle of attack achieve a 43.6% increase the heat transfer when compared to the baffle-free scenario. Staggered baffles with a 15° angle of attack demonstrate a superior 55.3% improvement compared to the baseline. A comprehensive evaluation of performance criteria identifies staggered baffles with a 30° angle of attack as the optimal configuration for maximizing heat transfer within corrugated tubes. [ABSTRACT FROM AUTHOR]

Background and Objective: The use of mechanical perforation as an alternative to radiofrequency wire in the treatment of pulmonary valve atresia with an intact ventricular septum, which is a ductdependent cyanotic congenital heart disease. We share our experience with this method, which is especially relevant for centers that do not have access to radiofrequency wires. Methods: This cross-sectional study was conducted between October 2011 and August 2022 on all infants referred to Shaheed Almehrab cardiac surgery and Catheterization Center in Babylon, Iraq whose severe cyanosis and patent ductus arteriosus (PDA) dependent pulmonary valve atresia with an intact ventricular septum were confirmed by transthoracic echocardiography. A chronic total occlusion (CTO) wiring procedure was used to create perforation through the atretic pulmonary valve with subsequent pulmonary valve balloon dilation, through an antegrade (n=18) or retrograde approach (n=10). Findings: A total number of 28 infants with 14 infants younger than one month and 14 infants older than one month of age were included. 15 cases (53%) were male. The mean oxygen saturation before the intervention was 44.48±7.43% which significantly improved to 88.35±7.71% (p<0.001). Tripartite ventricles were found in 56.5% of patients. Successful perforation with subsequent balloon valvuloplasty was achieved in 23 cases (82.1%) and death as a complication of perforation was reported in 5 cases. The antegrade operation was associated with higher survival than the retrograde (p=0.041). There were 21.5% of patients who required an additional procedure including a bidirectional cavopulmonary shunt (Glenn shunt) or Blalock-Taussig (BT) shunt to augment pulmonary blood flow. Tricuspid regurgitation improvement was confirmed in 87% of patients. Conclusion: In conclusion, transcatheter perforation of atretic pulmonary valves followed by balloon valvuloplasty is a feasible and effective treatment option for pulmonary atresia and intact ventricular septum. [ABSTRACT FROM AUTHOR]

Incorporating narrow band gap oxide semiconductors and metals into zinc oxide (ZnO) nanostructures broadens the range of light sensitivity to include visible wavelengths. In this study, the photocatalytic degradation of rhodamine B (RhB) dye was studied as a model for environmental pollution in aqueous media. This study describes the use of photodegradation catalysts, including gold (Au), ZnO, and Au–ZnO nanocomposites (prepared in ratios of 90:10 and 95:5) using the extract of Citrus medica leaves. X-ray diffraction (XRD) findings have shown that ZnO nanoparticles (NPs) have a hexagonal wurtzite structure. Field emission-scanning electron microscopy findings have depicted that ZnO NPs have diverse shapes, including spherical, quasi-spherical, hexagonal, and anisotropic, with some clumping. Au exhibits consistent spherical shapes and sizes with even distribution. Au–ZnO (90:10) shows quasi-spherical NPs with interconnected spherical Au, forming a porous and uneven surface. Au–ZnO (95:5) has spherical gold nanoparticles (Au NPs) dispersed on a textured ZnO surface, with some clustering and size variation as evident from the transmission electron microscopy, atomic force microscopy, and diffuse reflectance UV-visible spectroscopy analysis. The characterization results have demonstrated the uniform distribution of Au across the ZnO lattice. Additionally, the XRD patterns confirmed the hexagonal wurtzite structure of ZnO. Furthermore, energy-dispersive analysis of X-ray (EDX)-mapping verified the inclusion of zinc, oxygen, and Au in the hybrid Au–ZnO nanocomposites and their effective distribution. The topological analysis revealed a rough surface for the generated nanostructures. By comparing the results of various techniques, EDX analysis using atomic and weight ratios confirmed the presence of oxygen and Au in the nanocomposite. Additionally, the surface area analysis (BET) test has reported that the adsorption and desorption of nitrogen follow a Type III isotherm. The presence of an H3-type hysteresis loop further confirms the mesoporous nature of the composites, which reports the presence of wedge-shaped pores. The Au–ZnO (90:10) nanocomposite exhibits a higher surface roughness compared to other composites. In addition, this UV-visible diffuse reflectance spectroscopy has enumerated the band gaps of various nanomaterials using UV-visible spectroscopy. Moreover, the analysis has unveiled that combining ZnO with Au NPs (doping) improved the photocatalytic performance of ZnO. This improvement is attributed to the formation of additional energy levels within the ZnO band gap due to the presence of Au ions. Experimental investigation of the breakdown of RhB dye under visible light irradiation revealed superior photocatalytic activity for the Au–ZnO (90:10) nanocomposite compared to both Au–ZnO (95:5) and pure ZnO and Au counterparts. Multiple experiments confirmed the effective photodegradation and removal of RhB dye from the aqueous medium using the nanocatalyst under visible light irradiation. Under optimal conditions (1.0 g·L−1 photocatalyst, 10 ppm RhB, and pH 10), 99% photodegradation efficiency was reached within 50 min of irradiation. Investigation of reactive species revealed that the increased effectiveness of photodegradation in Au–ZnO (90:10) stems from the presence of photogenerated holes and hydroxyl radicals. The study also analyzed the reaction kinetics and order, and the reusability of the best photocatalyst Au–ZnO (90:10)) was confirmed through five consecutive cycles, demonstrating its sustained effectiveness in photodegradation. These findings highlight the potential of Au–ZnO (90:10) nanocomposite as a promising material for photocatalytic degradation of organic dyes.

As an essential initial step towards clean and sustainable energy, this research focuses on innovative materials and structural designs for maximizing solar energy conversion and harvesting. Modern solar thermal and photovoltaic system technologies and supplies are examined to show how alternative electricity has become less expensive and more sustainable. The primary focus is on complex ideas like multiple junctions and tandem solar cells, which increase the efficiency of single-junction systems. The review paper investigates innovative solar power storage solutions, involving battery technology and energy storage materials, to meet the increasing need for secure and easily available sources of clean energy. The research paper explores the technology and uses of flat plate collectors, tube collectors, and solar power plants and how those are used in residential and commercial solar thermal systems. Solar energy conversion efficiency and sustainability will improve with innovations in materials and architecture. Building-integrated photovoltaics (BIPV) is one of the easiest solar system architectures that can be integrated into any residential or commercial building. Quantum dot solar cells, photovoltaic (PV) solar energy frameworks, such as CIGS thin-film solar cells, and organic photovoltaics (OPVs). Organic photovoltaics are portable and lightweight but have a low energy conversion rate, whereas quantum dot solar cells have a high energy conversion rate but face fabrication challenges.

Nanocomposites materials of silver (Ag) with polyethene oxide, venal polyalcohol and polyvinyl pyrrolidone were synthesized by chemical reduction method using trisodium citrate (TSC) as a reduction agent. Silver based nanocomposites deposited as a film by dropcasting technique on (2x2 cm2) glass substrates. The effect of polymer matrix type on the optical properties (surface plasmon resonance, transmission and direct and indirect bandgap) were investigated. It was observed from the absorption spectra of the various synthesized materials that the type of polymer used in the preparation process significantly influences the location of the plasmonic absorption peak and the amount of the energy gap.

This review article explores the transformative influence of Internet of Things (IoT), Unmanned Aerial Vehicles (UAVs), and Deep Learning (DL) in modern agriculture, outlining their applications and impact on Smart Agriculture Systems (SAS). Examining various wireless communication technologies within IoT, including LoRa, Zigbee, and cellular networks like 5G, the study delineates their roles in enabling real-time monitoring and data transmission across expansive agricultural landscapes. Moving to UAVs, the review highlights their pivotal role in precision agriculture, elucidating how these aerial platforms equipped with diverse sensing technologies and cameras facilitate crop monitoring, disease detection, and targeted pesticide spraying. The integration of Deep Learning techniques, particularly Convolutional Neural Networks (CNNs), is discussed to emphasise their significance in disease detection, pest management, soil parameter estimation, and weed identification. The synthesis of these technologies reshapes traditional agricultural methodologies, empowering farmers with data-driven decision-making tools for optimized yield, sustainable practices, and efficient resource utilization. This comprehensive exploration aims to provide insights into the synergy of IoT, UAVs, and DL, laying the groundwork for the evolution of agricultural practices worldwide towards increased productivity and sustainability.

Over the past few years, the disciplines of E-Design and Virtual Design have experienced significant advancements, leading to transformative changes in our understanding, production, and engagement with digital environments. This abstract offers a look into our extensive investigation of this shift, as we delve into the various aspects that have influenced the virtual design field. Our study employs a comprehensive methodology that incorporates historical analysis, technological progress, and the diverse range of applications of E-Design and Virtual Design across different sectors. This study explores the historical trajectory of digital design, examining its evolution from first experimentation to its present level of advanced complexity. This paper examines the significant impact of technology on the creative process, specifically exploring the transformative influence of virtual reality (VR), augmented reality (AR), and immersive 3D modelling. This study investigates the influence of these technologies on architectural design, gaming, education, and healthcare, with a focus on the significant advancements that have arisen. Also,, we analyse the societal and cultural ramifications of virtual design, encompassing concerns related to accessibility, ethics, and sustainability. As we contemplate the future, we engage in speculation regarding the different trajectories that this continuously developing discipline may pursue. Our focus lies specifically on the convergence of virtual and physical areas, and the accompanying difficulties and opportunities that arise from this integration.

The use of sustainability is of utmost importance when it comes to tackling the environmental issues that our global community is currently confronting, ranging from climate change to the depletion of natural resources. The publication titled “Beyond Limits: Envisioning Sustainable Design and Production Ecosystems” delves into the imperative need for a paradigm shift in order to effectively address the aforementioned difficulties. This paradigm shift necessitates a break from conventional, sequential frameworks towards circular and regenerative systems, signifying a fundamental shift in our design and production methodologies. The concept of sustainable design and production ecosystems is intrinsically characterised by its complex nature. The dimensions encompassed by these practises are broad, encompassing the reimagining of design processes, the careful selection of materials, the optimisation of production procedures, the rethinking of supply chain management, and the consideration of end-of-life scenarios. Each of these characteristics plays a crucial role in establishing a comprehensive and enduring environment. The fundamental objective of this notion is to develop a state of peaceful coexistence between human activities and the ecosystems of the earth. In addition to the reduction of harm, it promotes active engagement in activities that contribute to the overall welfare of our environment. By exploring this paradigm-shifting perspective, we establish the foundation for a forthcoming era in which human pursuits harmoniously integrate with the ecological systems of the Earth, ensuring a sustainable and wealthy global community for future generations.

Novel nanocomposite structure has been made from physical mixing of polymer blend consist PMMA, PEO and PS filled with selenium nanoparticles. The nanocomposite had been deposited on glass slide by drop casting to form a thin film. This film was examined by required instrument like FESEM, XRD, EDS and UV-Vis to show the main physical properties of it. The XRD results were reflected the crystallinity nature of selenium NPs. SEM result shows the porosity nature of prepared film, where the pore size ranging from nano to micro size on all the surface of film. Also the indirect and direct bandgaps estimated and presented and equal to 3.77 and 4 eV. [ABSTRACT FROM AUTHOR]

This study presents the synthesis of a novel ovonic nanomaterial by the chemical route approach, involving the combination of three distinct materials: polyvinyl alcohol (PVA), iron oxide (Fe2O3), and selenium (Se) nanoparticles. The produced material underwent evaluation using various analytical techniques, including Xray diffraction (XRD), energy-dispersive Xray spectroscopy (EDS), scaning electron microscope (SEM), and UV-Visible spectrophotometer. The focus of the work revolved around a unique hybrid structure consisting of selenium nanoparticles that were embedded within a polyvinyl alcohol and iron(III) oxide. The examination of micro structure information yielded findings that support the notion that Se nanoparticles have an impact on the structural properties of PVA/Fe2O3. (XRD) and (EDS) examines provided confirmation of the formation of a novel composite structure. The produced composites had notable absorption peaks at a wavelength of 530 nm for PVA-Fe2O3-CdZnS. These composites exhibited a progressive transition towards absorption in higher wavelength areas. The composite material that has been suggested for potential utilization in forthcoming energy storage applications. [ABSTRACT FROM AUTHOR]

CdZnS thin films created via chemical bath deposition were examined to see how Cu doping affected their characteristics. Cu ions were added to the films in order to change their optical, structural, and morphological characteristics. These findings suggest that Cu doping can be used to modify the optical characteristics of CdZnS thin films. By using Xray diffraction (XRD) and the energy dispersive analysis of X-ray method (EDAX), we were able to investigate the compositional ratio as well as the structural features of the films. The field emission scanning electron microscopy (FESEM) technique was utilized in order to investigate the surface morphology of the produced films. The morphology of prepared films was fiber-like and in nanoscale. In addition, the UV-vis spectroscopy technique was utilized in order to characterize the optical properties of thin films. The prepared Cu-CdZnS film was found to have direct band gap equal to 2.64 eV and indirect gap equal to 2.4 eV. [ABSTRACT FROM AUTHOR]

This study examined the properties of polyvinyl alcohol (PVA) as a matrix composite, specifically focusing on the characterization techniques of UV-Visible spectroscopy, X-ray diffraction (XRD), and scanning electron microscopy (SEM) with energy dispersive spectroscopy (EDX). The investigation centered around a novel hybrid structure composed of CdZnS nanoparticles implanted within a composite matrix of PVA and Fe2O3. The analysis of microstructure data provided evidence of the influence of CdZnS nanoparticles on the structural characteristics of PVA–Fe2O3. The composites that were synthesized exhibited significant absorption peaks at wavelengths of 233 nm and 234 nm for PVA-Fe2O3 and PVA-Fe2O3-CdZnS, respectively. A progressive shift towards higher wavelength regions of absorption was found in these composites. The X-ray diffraction (XRD) analysis revealed an average crystalline grain size of 38.417 nm for Fe2O3 and 27.267 nm for PVA-Fe2O3-CdZnS. [ABSTRACT FROM AUTHOR]

In current work, Nanoparticles of cadmium zinc sulfide (CdZnS) and copper zinc sulfide (Cu:CdZnS) were synthesized through a capping-agent-free chemical co-precipitation method. This article focuses on the optical characteristics, elemental analysis, and surface morphology of CdZnS and Cu:CdZnS. this properties of prepared materials were investigated using a variety of techniques, including X-ray diffraction (XRD), scanning electron microscopy, energy dispersive X-ray, and ultraviolet-visible absorption. The results show both pure and doped CdZnS have cubic structure. The energy gap of CdZnS was equal to 3.14 eV and 3.4 eV for Cu doped CdZnS. According to the results the prepared nanoparticles are suitable for photdegradation applications. [ABSTRACT FROM AUTHOR]

Competing Interests: The authors declare no conflicts of interest.

The medical affidavit is critically significant for asylum seekers. Studies have shown that asylum seekers applying with a medical affidavit (versus without a medical affidavit) have double the success rate. There are many training resources for clinician-evaluators on the interviewing process, but little instruction exists on the affidavit writing process. Our objective was to identify the most common narrative elements in medical affidavits of successful (versus unsuccessful) asylum seekers to provide further writing guidance for clinician-evaluators. We hypothesized that these elements, when thoughtfully employed, help clinician-evaluators best represent their clients in the US immigration system. We focused on the most vulnerable applicants: those applying after the one-year deadline. Using grounded theory, we coded 23 affidavits filed after the one-year deadline for narrative elements. We identified seven narrative elements more common in medical affidavits of asylum seekers who filed after the one-year deadline and were successful: (1) Recommending specific clinical interventions; (2) Quoting elevated diction by the client; (3) Using headlines; including anecdotes that describe (4) The client forming human connections, (5) Archetypal female characters, (6) Love stories, or (7) Moments of realization., Competing Interests: Declaration of competing interest Authors report no competing interest., (Copyright © 2024 Elsevier Ltd and Faculty of Forensic and Legal Medicine. All rights reserved.)

The objective was to compare the dosimetry of Helical TomoTherapy (TOMO) and Gamma Knife (GK) treatment plans for tumor and normal brain in the treatment of single and multiple brain tumors. An anthropomorphic Rando Head phantom was used to compare the dosimetry of TOMO and GK. Eight brain tumors of various shapes, sizes and locations were used to generate 10 plans. The radiation dose was 20 Gy prescribed to the 100% isodose line for TOMO plans and to the 50% for the GK plans. Dose Volume Histograms for tumor and brain were compared. Equivalent Uniform Dose (gEUD), Tumor Control Probability (TCP) and Normal Tissue Complication Probability (NTCP) were performed and used for plan comparisons. Average minimum, mean, median and maximum tumor doses were 19.93, 27.83, 27.38, 39.60 Gy for GK and 20.17, 20.60, 20.59, 20.90 Gy for TOMO. Average gEUD values for tumor and normal brain were 25.0 and 7.2 Gy for GK and 20.7 and 8.1 Gy for TOMO. Conformity indices (CI) were similar for both modalities. Gradient indices (GI) were greater for TOMO. A combination plan was also generated using all eight tumors. TOMO was able to target all eight tumors simultaneously resulting in mean tumor and brain doses of 20.5 and 9.35 Gy, respectively. Due to the maximum limit of 50 beams per plan, GK was unable to provide a treatment plan for all eight tumors. GK provides an advantage for all tumor sizes with respect to tumor and normal brain dose. Clinical studies are needed to correlate these dosimetric findings with patient outcomes.