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When subjected to swift heavy ion (SHI) irradiation, a lattice acquires sufficient energy to induce desirable flaws in the material. In this study, the physiochemical properties of Sn-doped V2O5 (SVO) synthesized by a sol–gel process were thoroughly examined following irradiation with Ni+11 ions at 150 MeV energy and fluence of 2.51 × 1011 ions/cm2. The successful doping of Sn in V2O5 was confirmed by an increase in tensile strain, as revealed by the x-ray diffraction (XRD) spectrum, and the presence of characteristic peaks of constituent elements detected in the energy-dispersive x-ray (EDX) spectrum. Atomic force microscopy (AFM) and field-emission scanning microscopy (FESEM) images revealed an increase in surface roughness and transformation to an amorphous state, respectively. The Tauc plot indicated an increase in the electronic bandgap post-irradiation. Fourier transform infrared (FTIR) spectroscopy analysis revealed a peak shift in the fingerprint region indicating a change in the vibrational energy of the involved molecular bonds. These findings highlight the potential of SHI irradiation for the tuning of material properties, paving the way for a wide range of functional applications of the material.

In recent years, forensic age estimation gained significance owing to the rising incidence of violence, motor vehicle accidents, and mass disasters. Human dentition is a key component in biological profiling, with factors such as genetics, sex, and population affinity influencing its development and eruption. Dentition development is currently recognized as one of the most effective methods for estimating chronological age in young individuals. The Demirjian method is widely used in pediatric dentistry. However, its accuracy varies across different populations and/or regions. This paper explores the applicability of the Demirjian method in estimating dental age in a select KwaZulu-Natal sample of South Africa. This retrospective cross-sectional study utilized 480 digital panoramic radiographs aged between 5.00 and 16.99 years (  = 480:240 South African Black and 240 South African Indian). Consecutive sampling was implemented, and radiographs were evenly distributed among the aforementioned population groups, including sexes and all age cohorts. Using the CareStream (CS) Imaging Software, each digital panoramic radiograph was assessed using the Demirjian method. This study found that the Demirjian method overestimates dental age for the selected South African sample. It is recommended that population-specific norms should be utilized when estimating dental age in the South African population groups to avoid over or underestimation of dental age. In addition, a combination of more than one dental age estimation method should be utilized to obtain more accurate results. To conclude, this study's findings enhance the existing literature and may prove valuable in forensic and medicolegal contexts.

The intracranial segment of the vertebral artery (VA) is the unique part of the artery where the two VAs join to form a single vascular channel, viz. the basilar artery. In addition to this typical description, anatomical variations have been described; the presence of anatomical variation has been associated with some pathological processes, neurological complications, and the risk of vascular diseases in the posterior circulatory territory. We evaluated the typical anatomical features and variations of the VA4 component of the VA in a South African population to provide useful data on the prevalence of variation and morphometry of the distal VA. The study is an observational, retrospective chart review of 554 consecutive South African patients (Black, Indian, and Caucasian) who had been examined with multidetector computed tomography angiography (MDCTA) from January 2009 to September 2019. We observed various anatomical variations in the VA4 segment of the VA. We report the incidence of VA hypoplasia, hypoplastic terminal VA, and atresia. Fenestration and duplicate posterior inferior cerebellar artery (PICA) origin were also observed. The left intracranial VA was significantly larger than the right. Our study shows that anatomical variation of the intracranial VA is common in the population studied, with a total prevalence of 36.5%. Understanding the patterns of anatomical variations of the VAs will contribute significantly to the interpretation of ischemic areas and diagnosis of various diseases in the posterior circulatory territory.

Photocatalytic materials with enhanced charge separation and sunlight-driven degradation of organic dye are crucial for advancement in wastewater treatment solutions. In the present investigation, three-phase nanocomposites V4O7/V2O5/Zn2V2O7, exhibiting excellent photocatalytic performance under natural sunlight, were synthesized using a microwave-assisted method and characterized through x-ray Diffraction (XRD), Field Emission Scanning Electron Microscopy (FESEM), UV-Visible Spectroscopy (UV–vis), and Photoluminescence (PL) techniques. XRD confirmed the phase composition of V4O7, V2O5, and Zn2V2O7, with no detectable impurity phases. Additionally, electron images showed that all the mixtures formed round clusters that were very porous and looked like tiny flowers with sharp edges. Interestingly, the bandgap of the composites exhibited a blue shift (from 2.03 eV to 1.9 eV) with increasing concentrations of Zn2V2O7. The prepared samples were evaluated as photocatalysts for the degradation of Methylene Blue (MB) dye under natural sunlight. Among the composites, the sample with composition (V4O7)0.65 (V2O5)0.20 (Zn2V2O7)0.15 demonstrated the highest degradation efficiency ( ∼ 95%), achieving complete degradation of MB dye after 45 minutes of natural solar irradiation, with a photodegradation rate constant of 0.06492 min−1. This nearly threefold increase in efficiency compared to V2O5 ( ∼ 28%) is primarily attributed to the enhanced charge separation efficiency within the composite structure.

IntroductionThe most common type of vascular complication during cervical spine surgery is the vertebral artery (VA) injury. The presence of anatomical variation in the artery's morphology has been a significant factor for arterial injury during surgery. Therefore, physicians planning interventions in the craniospinal region need to be aware of the extents of variations. In addition to vascular injury, anatomical variations can predispose to some pathologies in the posterior circulation territory. To provide useful data to interventional radiologists, anatomists, and surgeons, we evaluated the anatomical features of the V1 and V2 segments of the VA in a South African population.Materials and methodsThe study is an observational, retrospective chart review of 554 consecutive South African patients (Black, Indian and White) who had undergone computed tomography angiography (CTA) from January 2009 to September 2019.ResultsThe VA exhibited morphological variation in its course. We report the incidence of variant origin of the left VA, all from the aortic arch. Variation in the level of entry into the transverse foramen ranged between C7 and C3. A left dominant pattern was observed; we also report on hypoplasia of the VA. In addition, we report incidence of VA tortuosity at V1, V2 to be 76.6% and 32.1%, respectively.ConclusionsThe baseline data established in this study regarding the diameter, variant origin, and level of entry into the transverse foramen will assist neurosurgeons and interventional radiologists in interpreting, diagnosing, and planning and executing various vascular procedures and treatment of pathology in the vicinity of the VA.

The Great Observatories All-Sky LIRG Survey (GOALS20) combines data from NASA’sSpitzer Space Telescope, Chandra X-Ray Observatory, Hubble Space Telescope(HST), andGalaxy Evolution Explorer(GALEX) observatories, together with ground-based data, into a comprehensive imaging and spectroscopic survey of over 200 low-redshift ( z < 0.088 z < 0.088 ), Luminous Infrared Galaxies (LIRGs). The LIRGs are a complete subset of theIRASRevised Bright Galaxy Sample (RBGS), which comprises 629 extragalactic objects with 60 μm flux densities above 5.24 Jy, and Galactic latitudes above five degrees. The LIRGs targeted in GOALS span the full range of nuclear spectral types defined via traditional optical line-ratio diagrams (type-1 and type-2 AGN, LINERs, and starbursts) as well as interaction stages (major mergers, minor mergers, and isolated galaxies). They provide an unbiased picture of the processes responsible for enhanced infrared emission in galaxies in the local Universe. As an example of the analytic power of the multiwavelength GOALS data set, we presentSpitzer, Chandra, HST,andGALEXimages and spectra for the interacting system VV 340 (IRAS F14547 + 2449 F 14547 + 2449 ). TheSpitzerMIPS imaging data indicates that between 80–95% of the total far-infrared emission (or about5 × 1011 L ⊙ 5 × 10 11     L ⊙ ) originates in VV 340 north. While theSpitzerIRAC colors of VV 340 north and south are consistent with star-forming galaxies, both theSpitzerIRS andChandraACIS data indicate the presence of an AGN in VV 340 north. The observed line fluxes, without correction for extinction, imply that the AGN accounts for less than 10%–20% of the observed infrared emission. The X-ray data are consistent with a heavily absorbed ( N H ≥1024 cm-2 N H ≥ 10 24     cm - 2 ) AGN. The GALEX far and near-UV fluxes imply a extremely large infrared “excess” (IRX) for the system (FIR/Ffuv ∼ 81 F IR / F fuv ∼ 81 ) which is well above the correlation seen in starburst galaxies. Most of this excess is driven by VV 340 N, which has an IR excess of nearly 400. The VV 340 system seems to be comprised of two very different galaxies: an infrared luminous edge-on galaxy (VV 340 north) that dominates the long-wavelength emission from the system, which hosts a buried AGN; and a face-on starburst (VV 340 south) that dominates the short-wavelength emission.

The complex embryonic origin of the vertebrobasilar system may result in a wide range of anatomical variations. It has been hypothesized that the formation of fenestrations are likely to occur due to the failure of regression of the bridging arteries that connect the longitudinal neural arteries during embryogenesis. Fenestration of the vertebrobasilar system is a rare anatomical variation that involves a luminal division of the artery, that has a single origin into two separate and parallel channels which are rejoined distally. Fenestrations are important anatomical variants in patients undergoing endovascular and invasive intracranial interventions. Vascular fenestration has been associated with aneurysms, arteriovenous malformations, neuralgia, and vertebrobasilar ischaemia. We report on 3 cases of fenestration at the vertebrobasilar junction in 1 female and 2 male patients, respectively, using multidetector computed tomography angiography. The length of the fenestrated segment of the artery measured 4.41 mm, 3.90 mm, and 5.90 mm, respectively in the patients. Our report is clinically important as the presence of this anatomical variation may influence the management of cervical and intracranial pathologies. Increased awareness of the prevalence of anatomic variations contributes to the advancement of noninvasive imaging capabilities.

Background: As a dynamic stabiliser and flexor of the glenohumeral joint, the long head of the biceps brachii tendon (LHBBT) is further stabilised by the retinacular activities of the transverse humeral ligament (THL). Materials and methods: The LHBBT and THL which were obtained from a total of 40 cadaveric upper limb specimens (n = 80; females: 36, males: 44; right: 40, left: 40), were bilaterally dissected and subjected to morphometric evaluation. Results: The results are in millimetres. LHBBT length: 81.99 ± 21.28 right, 79.73 ± 17.27 left; 79.82 ± 19.66 male, 82.14 ± 19.03 female; LHBBT width: 4.28 ± 1.31 right, 4.67 ± 1.43 left; 4.35 ± 1.17 male, 4.63 ± 1.60 female; THL length: 20.91 ± 5.24 right, 21.19 ± 6.63 left; 21.52 ± 5.71 male, 20.48 ± 5.92 female; THL width: 16.65 ± 6.92 right, 16.63 ± 7.49 left; 16.83 ± 6.65 male, 16.40 ± 7.84 female. With larger LHBBT length observed on the right side and larger LHBBT width observed on the left side; both parameters appeared to be distinctly longer in female individuals. On the contrary, the THL length and width were evidently greater in male individuals, with larger lengths and widths present on the left and right sides respectively. Conclusions: These findings may contribute to South African literature and to clinical knowledge as these parameters are important in the successful outcomes of tenotomy, tenodesis and shoulder-related procedures.

The most stable oxide of the vanadium oxide family is V2O5. A lot of research effort is focused on it because it has a multitude of functional applications. Here we report on how the heat treatment (600°C, 5 h, air) affects the microstructure and hence, the band gap of V2O5. The V2O5 powders, initially obtained by simple thermal dissociation (500 °C, 3 h, air) of ammonium metavanadate, followed by heat treatment of pellets; were studied. The structural and optical studies performed using X-ray diffraction (XRD), FESEM and UV-Vis techniques, provide uniquely interesting results which indicate the possibility of band gap tuning by controlling the microstructure.

There is great variability in the branching patterns of the axillary artery (AA). Racial differences have been reported to play a role in this variability. The subscapular artery (SA) is the largest and most variable branch of the AA. It usually arises from the third part of the AA at the inferior border of the subscapularis muscle. Approximately 4 cm from its origin, the SA divides into the circumflex scapular and thoracodorsal arteries. Two types of the SA have been described, depending on the site of its origin from the AA in relation to the point where the AA passes between the lateral and medial roots of the median nerve. It is referred to as the superficial SA (SSA), when proximal, and the deep SA (DSA), when distal to this point, respectively. This study aimed to determine the site and distance of origin of the SA from the outer border of the first rib in the South African Black population. The study comprised bilateral gross anatomical dissections of 50 adult Black South African cadavers (n = 100 AAs). The site and distance of origin of each vessel from the outer border of the first rib were recorded. Additional branches and variations were also noted. The SSA and DSA were found in 52.8% and 47.2% of cases, respectively. In 16.8% of cases, the SA gave rise to the posterior circumflex humeral artery and the lateral thoracic artery in 33.7% cases. The SA was absent in 11% of the cases. The prevalence of the SSA reported in this study differs from values ranging between 1.7% and 16% reported in the literature. The high incidence of the SSA in this study may have clinical significance as a superficial course of the arteries make them vulnerable to injury during surgical procedures.