Well-defined Edges Research Articles

Enhancing melt foam stability, form-filling process, and pore structure evolution of shaped aluminum foam

This study explores the stability of Al–Si–Ca–Mg-Sc melt foams and investigates the melt foam filling process and the dynamic evolution of pore structures in the fabrication of foam aluminum profiles using the melt transfer foaming technique. The results show that Al–Si–Ca–Mg-Sc melt foam maintains high porosity and a stable pore structure even after 30 min of foaming, without any signs of boundary rupture or destabilization. This stability is attributed to the increased viscosity from finely dispersed second-phase particles, which hinder the growth, coalescence, and drainage of the melt foam. Regarding melt foam filling, enhanced filling capability is achieved by elevating the foaming temperature, extending the foaming time, and increasing the TiH2 addition. The melt foam exhibits a smooth flow from the lower part of the mold to the corners, completing the filling process with well-defined edges in the profile. During lateral movement for filling, a gradual increase in porosity, a decrease in pore number, and a slow enlargement of pore size and standard deviation along the lateral (x-axis) are observed. This is due to the slower liquid phase flow compared to the gas phase, resulting in bubble coalescence. After filling is complete, this phenomenon improves, contributing to a slow and stable evolution of the pore structure.Under optimized conditions of 1.4 wt% TiH2 addition at 600°Cfor 9 min of foaming with Al–Si–Ca–Mg-Sc alloy melting, we successfully fabricated foam aluminum profiles with complete filling, a porosity of 81.5%, an average pore size of 2–3 mm, and a uniform pore structure.

Research on the Influence of Thermal Decomposition of Magnesium Chloride Hexahydrate on the Preparation of Magnesium Oxide and Hydrated Magnesium Hydroxide

Magnesium chloride hexahydrate is an important intermediate product in magnesite processing. In order to promote the efficient utilization of magnesite resources, based on the pyrolysis interval of magnesium chloride hexahydrate, the relationship between magnesium oxide with different physicochemical properties and the apparent properties of hydrated magnesium hydroxide was studied. The results show that the effect of temperature on magnesium oxide sintering is stronger than that of holding time. With the increase of calcination temperature and the extension of holding time of magnesium chloride hexahydrate, the calcined product magnesium oxide was sintered into large particle size with the characteristic particle size D<sub>50</sub> of 33.89 μm. The crystal was distorted, the chemical activity deteriorated, and the color development time was up to 407 s. When hexahydrate magnesium chloride was calcined at 480 °C with 2 h, it decomposed almost completely. The product, magnesium oxide, consisted of uniformly distributed small coral rod-like particles with strong chemical reactivity and a color development time of 115 s. The particles were small and evenly distributed, with a characteristic particle size D50 of 1.36 μm, and the highest specific surface area reached 7.292 m<sup>2</sup>/g. The hydrated magnesium hydroxide particles had well-defined edges and corners, with a characteristic particle size D50 of 1.59 μm and a uniform particle size distribution.

Exploring the nature of dark matter with the extreme galaxy AGC 114905

i ) morphology, remains somewhat uncertain. We present unmatched ultra-deep optical imaging of AGC 114905 reaching surface brightness limits $ r,lim 32$ mag/arcsec$^2$ ($3 10 arcsec times 10 arcsec) obtained with the 10.4 m Gran Telescopio Canarias. With the new imaging, we characterise the galaxy's optical morphology, surface brightness, colours, and stellar mass profiles in great detail. The stellar disc has a similar extent to the i disc, presents spiral arms-like features, and shows a well-defined edge. Stars and gas have a similar morphology, and crucially, we find an inclination of $31 in agreement with the previous determinations. We revisit the rotation curve decomposition of the galaxy, and we explore different mass models in the context of CDM, self-interacting dark matter (SIDM), fuzzy dark matter (FDM) or Modified Newtonian dynamics (MOND). We find that the last does not fit the circular speed of the galaxy, while CDM only does so with dark halo parameters rarely seen in cosmological simulations. Within the uncertainties, SIDM and FDM remain feasible candidates to explain the observed kinematics of AGC 114905.

Skin Metastases from Breast Cancer: Case Report

Breast cancer is the second most common cancer diagnosed in women. Skin metastases result from infiltration of the skin due to cell proliferation. The incidence of cutaneous metastases varies from 0.6-10.4%. We present a 52-year-old woman diagnosed with infiltrating ductal carcinoma triple-negative, who presented with a localized dermatosis that affects the chest with a erythematous plaque, nodular and ulcerated in appearance, with irregular and well-defined edges. Breast carcinoma can present metastases in skin, recognizing the diversity of clinical presentations in a timely manner, is the key to a timely diagnosis and reducing mortality.

Moiré-modulated band gap and van Hove singularities in twisted bilayer germanene

Twisting bilayers of two-dimensional topological insulators has the potential to create unique quantum states of matter. Here, we successfully synthesized a twisted bilayer of germanene on Ge2Pt(101) with a 21.8° twist angle, corresponding to a commensurate (√7×√7) structure. Using scanning tunneling microscopy and spectroscopy, we unraveled the structural and electronic properties of this configuration, revealing a moiré-modulated band gap and a well-defined edge state. This band gap opens at AB/BA stacked sites and closes at AA stacked sites, a phenomenon attributed to the electric field induced by the scanning tunneling microscopy tip. Our study further revealed two van Hove singularities at −0.8 eV and +1.04 eV, resulting in a Fermi velocity of (8 ± 1) × 105 m s−1. Our tight-binding results uncover a unique quantum state, where the topological properties could be regulated through an electric field, potentially triggering two topological phase transitions.

Hybrid nanogels and their roles in eliminating soot stains from historical paper manuscripts

Soot stain from diverse sources is the most common stain that stains historical paper documents found in libraries, museums, and storage facilities. It is believed to be one of the types of deterioration that arises from the contact between stains and paper sheets. Therefore, in the present work, the effectiveness of the synthesized hybrid nanogel consisting of carbopol and nanoparticles (NPs) of ZnO, TiO2, or Fe3O4, in low and high-viscosity forms, for eliminating soot stains from historical paper manuscripts was conducted. The prepared hybrid nanogels were characterized utilizing the TEM, AFM, XRD, DLS, and Zeta Potential techniques. Following preparation, the soot-stained paper samples were heated to 105 °C for 6 days, a process known as accelerated thermal aging. Surface morphology, mechanical properties and the color change of the paper samples were investigated. The prepared hybrid nanogel had a spherical shape with well-defined edges and uniform size, with an average particle diameter ranging from 30 to 35 nm. There was no significant NPs agglomeration seen, suggesting uniform dispersion in the carbopol matrix. Additionally, the prepared gels' crystal structure and phase purity were revealed by the XRD analysis results. Paper fibers were visible in some parts of the treated sample with TiO2/carbopol hybrid nanogel at high-viscosity before aging. Cleaning soot-stained paper samples using high-viscosity Fe3O4/carbopol hybrid nanogel is more successful than using low-viscosity nanogel. the sample treated with high-viscosity ZnONPs/carbopol hybrid nanogel produced the highest total color differences (ΔE) (26.17). The paper sample treated with high-viscosity ZnO/carbopol hybrid nanogel exhibited the maximum tensile strength (61.8 N/mm2) and elongation at break (1.174%). The evaluation of the paper samples both before and after the cleaning process revealed that, the treatment with high-viscosity ZnO/carbopol hybrid nanogel gave the best results in removing soot stains from stained paper samples.

Multiscale Structured Trimetal Oxide Heterojunctions for Urinary Metabolic Phenotype-Dependent Screening of Early and Small Hepatocellular Carcinoma.

Developing a standardized screening tool for the detection of early and small hepatocellular carcinoma (HCC) through urinary metabolic analysis poses a challenging yet intriguing research endeavor. In this study, a range of intricately interlaced 2D rough nanosheets featuring well-defined sharp edges is fabricated, with the aim of constructing diverse trimetal oxide heterojunctions exhibiting multiscale structures. By carefully engineering synergistic effects in composition and structure, including improved adsorption, diffusion, and other surface-driven processes, the optimized heterojunctions demonstrate a substantial enhancement in signal intensity compared to monometallic or bimetallic oxides, as well as fragmented trimetallic oxides. Additionally, optimal heterojunctions enable the extraction of high-quality urinary metabolic fingerprints using high-throughput mass spectrometry. Leveraging machine learning, discrimination of HCC patients from high-risk and healthy populations achieves impressive performance, with area under the curve values of 0.940 and 0.916 for receiver operating characteristic and precision-recall curves, respectively. Six crucial metabolites are identified, enabling accurate detection of early, small-tumor, alpha-fetoprotein-negative HCC (93.3%-97.3%). A comprehensive screening strategy tailored to clinical reality yields precision metrics (accuracy, precision, recall, and F1 score) exceeding 95.0%. This study advances the application of cutting-edge matrices-based metabolic phenotyping in practical clinical diagnostics.

Male’s Primary Breast Lymphoma: Rare Entity of Breast Malignancy, Wad Madani Teaching Hospital, Gezira State, Sudan, August 2023

<i>Background</i>: Primary breast lymphoma is a malignant lymphoma primarily involving breast in absence of previously detected lymphoma localizations. <i>Method</i>: A male of forty years old admitted to Department of Surgery; Wad Madani Teaching Hospital; Gezira State; Sudan; complaining of left breast lump for three months. Condition observed as a painful swelling in left breast, increasing gradually in size, associated with continuous high-grade fever, no rigors and relieved by analgesia, no nipple discharges. Had significant weight loss, anorexia, fatigability, back pain, dry cough with no hemoptysis, no history of headache, and no past or family history of similar condition. Examination: patient looks ill, pale, and not jaundiced. Breast examination: Left breast was larger than right one. Left breast: no nipple destruction, nipple was directed downward medially, no skin changes or dimpling, and no ulceration. There was a mass in left upper outer quadrant, measuring 6*7 cm, smooth surface, hard in consistency with well-defined edges, and attached to muscles but not to skin. No palpable axillary lymph nodes. Right breast was normal. Chest and abdominal examination were unremarkable. Investigations: Fine needle aspiration cytology showed poorly differentiated carcinoma. Incisional biopsy revealed: high grade Non-Hodgkins Lymphomas (Diffuse Large B Cell Lymphoma). He was referred to oncological department for neoadjuvant chemoradiotherapy. Conclusion and <i>Recommendation</i>: Primarily breast lymphoma is extremely rare among male, showing features mimicking breast carcinoma. Incisional biopsy was recommended for investigation of breast lump especially among males.

Structural and Morphological Analysis of Untapped Clay Deposits in Itu Local Government Area Akwa Ibom State, Nigeria and its Potentials as Raw Material for Petroleum Refining

This work describes scanning electron microscope and XRD characterization of untapped clay deposits in Itu Local Government Area Akwa Ibom State and its potentials as raw material for petroleum refining. The structure and morphology of the raw kaolin clay and metakaolin were analyzed using XRD and SEM. The XRD data indicates 48.0 % quartz, 30.0% kaolinite, 3.0 % chlorite, 16.0 % illite and 2.0% albite in the raw kaolin and 68.3 % quartz, 17.3 % orthoclase, 5.9 % muscovite, 1.8 % illite , 6.68 %, albite in the metakaolin from Ikot Uso Akpan and 16.2 % kaolinite, 67.0% quartz, 2.5 % muscovite, 5.5 % orthoclase, 1.4 % chlorite, and 7.0 % albite were revealed in Ekim Itam raw kaolin. 66.0 % quartz, 10.0 % muscovite, 15.0 % orthoclase, 5.0 % illite, 5.0 % albite were recorded in the metakaolin. The XRD results confirmed the presence of quartz and alumina mineral phases from both kaolin deposits. Calcination at 1000oC increased the crystalline structure of the metakaolin and did not significantly modify surface morphology of the kaolin indicating stability of kaolin structure, one the desired property of a good zeolite. The SEM results indicated heterogeneous size and spongy like porous shape. There was no significant change in the surface morphology of the heterogeneous size calcined kaolin compared with untreated kaolin. The SEM results of the metakaolin kaolin also indicated cubic crystalline structure with well-defined edges. With adequate modification the studied kaolin could be a promising raw material for synthesis of zeolite suitable for bio and fossil fuel processing.

Growth, catalysis, and faceting of α-Ga2O3 and α-(InxGa1−x)2O3 on m-plane α-Al2O3 by molecular beam epitaxy

The growth of α-Ga2O3 and α-(InxGa1−x)2O3 on m-plane α-Al2O3(101̄0) by molecular beam epitaxy (MBE) and metal-oxide-catalyzed epitaxy (MOCATAXY) is investigated. By systematically exploring the parameter space accessed by MBE and MOCATAXY, phase-pure α-Ga2O3(101̄0) and α-(InxGa1−x)2O3(101̄0) thin films are realized. The presence of In on the α-Ga2O3 growth surface remarkably expands its growth window far into the metal-rich flux regime and to higher growth temperatures. With increasing O-to-Ga flux ratio (RO), In incorporates into α-(InxGa1−x)2O3 up to x ≤ 0.08. Upon a critical thickness, β-(InxGa1−x)2O3 nucleates and, subsequently, heteroepitaxially grows on top of α-(InxGa1−x)2O3 facets. Metal-rich MOCATAXY growth conditions, where α-Ga2O3 would not conventionally stabilize, lead to single-crystalline α-Ga2O3 with negligible In incorporation and improved surface morphology. Higher TTC further results in single-crystalline α-Ga2O3 with well-defined terraces and step edges at their surfaces. For RO ≤ 0.53, In acts as a surfactant on the α-Ga2O3 growth surface by favoring step edges, while for RO ≥ 0.8, In incorporates and leads to a-plane α-(InxGa1−x)2O3 faceting and the subsequent (2̄01) β-(InxGa1−x)2O3 growth on top. Thin film analysis by scanning transmission electron microscopy reveals highly crystalline α-Ga2O3 layers and interfaces. We provide a phase diagram to guide the MBE and MOCATAXY growth of single-crystalline α-Ga2O3 on α-Al2O3(101̄0).

Neurocysticercosis with Classic Ring Enhancing Lesions in a Patient with AIDS: Case Report, Diagnostic Approach and Literature Review

Introduction: Human immunodeficiency virus (HIV) is a neurotrophic, neuroinvasive, and neurovirulent pathogen, which can cause direct infection of the central nervous system (CNS) but also predisposes to a variety of other neuroinfections through impaired T-cell mediated immunity. Among the imaging findings in HIV patient with CNS infection, the presence of ring-enhancing intracranial lesions are considered not rare but quite puzzling diagnostic dilemma. The differential diagnosis for theses lesions commonly includes metastasis, abscess, glioblastoma, infarct, contusion, demyelinating disease, radiation necrosis, resolving hematoma or infections. Many features need to be considered altogether to help narrow the differential. Case description: Male, 32 years old, with history of chronic smoking, pets: one cat dewormed and vaccinated, and positive diagnosis of HIV infection with a CD4 T lymphocyte count of 24 cells/mm3, without antiretroviral treatment. His main symptom was headache, associated with fever, nausea, and vomiting. Therefore, he was hospitalized for his diagnostic approach. Complete laboratory work was done, head CT, lumbar puncture, and MRI, finding rounded intra-axial lesions with well-defined and hyperintense edges in the parietal and occipital region with annular enhancement after the administration of contrast. After symptomatic treatment and anthelmintic therapy, a follow-up imaging study evidenced involution of these lesions. The patient met diagnostic criteria for definitive diagnosis of neurocysticercosis. Conclusion: Even though, Neurocysticercosis is not a rare disease, our group decided to publish this case report because its asocciation with an HIV positive patient, in which has not been yet linked to, in behalf of the lack of evidence and studies, considering the ethical issue of performing rutinary head CT scans in asymptomatic individuals.

Synthesis of Quantum-Confined Borophene Nanoribbons.

Borophene nanoribbons (BNRs) are one-dimensional strips of atomically thin boron expected to exhibit quantum-confined electronic properties that are not present in extended two-dimensional borophene. While the parent material borophene has been experimentally shown to possess anisotropic metallicity and diverse polymorphic structures, the atomically precise synthesis of nanometer-wide BNRs has not yet been achieved. Here, we demonstrate the synthesis of multiple BNR polymorphs with well-defined edge configurations within the nanometer-scale terraces of vicinal Ag(977). Through atomic-scale imaging, spectroscopy, and first-principles calculations, the synthesized BNR polymorphs are characterized and found to possess distinct edge structures and electronic properties. For single-phase BNRs, v1/6-BNRs and v1/5-BNRs adopt reconstructed armchair edges and sawtooth edges, respectively. In addition, the electronic properties of single-phase v1/6-BNRs and v1/5-BNRs are dominated by Friedel oscillations and striped moiré patterns, respectively. On the other hand, mixed-phase BNRs possess quantum-confined states with increasing nodes in the electronic density of states at elevated biases. Overall, the high degree of polymorphism and diverse edge topologies in borophene nanoribbons provide a rich quantum platform for studying one-dimensional electronic states.

Ultrafast self-powered phototransistor based on Te-WSe2 van der Waals heterojunction

Band engineering through the integration of van der Waals heterostructures composed of 2D materials offers a promising approach to achieving high-performance optoelectronic devices. This strategy allows for the fabrication of ultrathin and uniform PN junctions with well-defined band edges, enabling efficient charge transfer and separation. In this study, we have developed a self-powered and highly sensitive photodetector using a van der Waals heterostructure composed of WSe2 and Te. The Te layer was employed as the channel material for the phototransistor, while the out-of-plane Te/WSe2 PN junction served as the charge transfer layer. The vertical built-in electric field present in the PN junction facilitated the separation of photogenerated carriers. The proposed phototransistor demonstrated exceptional self-powered performance characteristics, including a photoresponsivity of 33.08 mA/W, a specific detectivity of 1.57 × 106 Jones, and a fast response time of 2 μs. These results highlight the effectiveness of the van der Waals heterostructure design in achieving high sensitivity and efficient carrier separation in photodetection applications.

Inkjet Printing-Manufactured Boron-Doped Diamond Chip Electrodes for Electrochemical Sensing Purposes.

Fabrication of patterned boron-doped diamond (BDD) in an inexpensive and straightforward way is required for a variety of practical applications, including the development of BDD-based electrochemical sensors. This work describes a simplified and novel bottom-up fabrication approach for BDD-based three-electrode sensor chips utilizing direct inkjet printing of diamond nanoparticles on silicon-based substrates. The whole seeding process, accomplished by a commercial research inkjet printer with piezo-driven drop-on-demand printheads, was systematically examined. Optimized and continuous inkjet-printed features were obtained with glycerol-based diamond ink (0.4% vol/wt), silicon substrates pretreated by exposure to oxygen plasma and subsequently to air, and applying a dot density of 750 drops (volume 9 pL) per inch. Next, the dried micropatterned substrate was subjected to a chemical vapor deposition step to grow uniform thin-film BDD, which satisfied the function of both working and counter electrodes. Silver was inkjet-printed to complete the sensor chip with a reference electrode. Scanning electron micrographs showed a closed BDD layer with a typical polycrystalline structure and sharp and well-defined edges. Very good homogeneity in diamond layer composition and a high boron content (∼2 × 1021 atoms cm-3) was confirmed by Raman spectroscopy. Important electrochemical characteristics, including the width of the potential window (2.5 V) and double-layer capacitance (27 μF cm-2), were evaluated by cyclic voltammetry. Fast electron transfer kinetics was recognized for the [Ru(NH3)6]3+/2+ redox marker due to the high doping level, while somewhat hindered kinetics was observed for the surface-sensitive [Fe(CN)6]3-/4- probe. Furthermore, the ability to electrochemically detect organic compounds of different structural motifs, such as glucose, ascorbic acid, uric acid, tyrosine, and dopamine, was successfully verified and compared with commercially available screen-printed BDD electrodes. The newly developed chip-based manufacture method enables the rapid prototyping of different small-scale electrode designs and BDD microstructures, which can lead to enhanced sensor performance with capability of repeated use.

Critical method evaluation refutes the Ar 2p signal of implanted Ar for referencing X-ray photoelectron spectra

Correct binding energy (BE) spectra referencing of insulating samples remains the major challenge in modern XPS analyses. Ar 2p signal of implanted Ar is sometimes used for this purpose. The method relies upon the assumption that chemically inert species such as noble gas atoms would be ideally suited as other factors affecting core level peak positions (such as chemical bonding) can be excluded. Here, we present a systematic study on the Ar 2p referencing method applied to a wide range of thin film sample materials of metals, nitrides, carbides, and borides. All specimens exhibit a well-defined Fermi edge, which serves as an independent internal reference for Ar 2p spectra of in-situ implanted Ar. Ar 2p3/2 binding energy is shown to vary by as much as 5.1 eV between samples. This is more than typical chemical shifts of interest, which obviously disqualifies Ar 2p referencing. The BE of the Ar 2p peaks shows a strong correlation to the number of valence electrons available for screening, implying that the polarization energy has a major role for the observed large spread of Ar 2p3/2 BE values. In several cases of single-phase films, an additional Ar 2p doublet is observed with the Ar 2p3/2 BE referenced to the vacuum level higher than the gas phase value of 248.6 eV, which is tentatively assigned to the formation of Ar-N and Ar-C complexes stabilized by Van der Waals forces. Ar implantation into two-phase samples, exemplified here by phase-segregated NiCrC/a-C:H and nanocomposite c-TiN/SiNx thin films, leads to complex Ar 2p spectra, which further demonstrates unreliability of the referencing method. The firm conclusion of the study is that the Ar 2p3/2 peak from implanted Ar is not a remedy for the charge referencing problem.

Theory of glide symmetry protected helical edge states in a WTe2 monolayer

Helical edge states in quantum spin Hall (QSH) materials are central building blocks of topological matter design and engineering. Despite their principal topological protection against elastic backscattering, the level of operational stability depends on manifold parameters such as the band gap of the given semiconductor system in the 'inverted' regime, temperature, disorder, and crystal orientation. We theoretically investigate electronic and transport properties of QSH edge states in large gap 1-T' WTe$_{2}$ monolayers. We explore the impact of edge termination, disorder, temperature, and interactions on experimentally addressable edge state observables, such as local density of states and conductance. We show that conductance quantization can remain surprisingly robust even for heavily disordered samples because of an anomalously small edge state decay length and additional protection related to the large direct gap allowed by glide symmetry. From the simulation of temperature-dependent resistance, we find that moderate disorder enhances the stability of conductance by localizing bulk states. We evaluate the edge state velocity and Luttinger liquid parameter as functions of the chemical potential, finding prospects for physics beyond linear helical Luttinger liquids in samples with ultra-clean and well-defined edges.

Controlling and visualizing fracture of 2D crystals by wrinkling

Shaping two-dimensional (2D) crystals with well-defined edges along specific directions remains technically challenging due to the intrinsic lattice discreteness and anisotropy in their fracture toughness. The patterns of crystal cleavage are determined by the fracture resistance and loading conditions, and usually display kinking features. We show that the fracture of single-crystalline 2D films (MoS2, MoTe2, graphene) can be controlled by mechanically-induced wrinkles, and the distortion of their profiles can visualize the distorted local strain state near the crack tip. In thin samples with stretch-induced wrinkles, the elastic driving force with effective anisotropy steers crack propagation, resulting in straight edges following the corrugation profile. In contrast, thick samples remain flat under stretch for their elevated bending resistance, and the cracks advance with sawtooth patterns following the zigzag motif. The experimental findings are explained by wrinkling-induced elastic anisotropy, which dominates over fracture anisotropy. The control of fracture in 2D crystals can be applied to fabricate micro- and nanostructures for their applications in electromechanical and optoelectronic devices.

Ayurvedic Management of Vicharchika (Lichen Simplex Chronicus) - A Case Report

ABSTRACT Lichen simplex chronicus (LSC) consists of lichenified scaly plaque due to chronic scratching. The available conventional treatments are various topical antipruritic agents and corticosteroids, which are associated with high rates of treatment failure and complications because trans-epidermal drug absorption is limited. LSC manifests as a significant challenge to a physician due to persistent itching and therapeutic resistance. In Ayurveda, this condition has a close resemblance to Vicharchika. Vicharchika is a type of Kshudra kustha with dominancy of Kapha dosha characterized by redness, itching, pain, cracks, and dryness. In this case report, a 48 year old female reported complaints of multiple black-colored patches on the dorsum surface of bilateral feet with severe itching for 6 years. Local examination revealed lichenified hyperpigmented plaques with erythematous bases and well-defined edges covered by white scales with central excoriation. Plaques were found bilaterally over the dorsum of feet and malleolus. Based on symptoms and signs, the case of LSC was diagnosed. This case was managed effectively with Ayurvedic internal medications such as Arogyavardhini Vati, Kaishore Guggulu, Nishaamlaki Vati, Triphala churna, Khadirarishta, and local application of Brihat Marichyadi oil and Sudha Gandhak. The outcome assessment was based on improvement in the size of skin patches, hyperpigmentation, thickening, and itching. Complete improvement has been observed in symptoms after 4 months of regular treatment. No adverse effect pertaining to the prescribed drug was reported during the study period. Ayurvedic medicines offer a good approach to managing LSC.

Minimally Invasive Transvaginal Resection of a Rectovaginal Septal Leiomyoma

A 28-year-old patient was admitted to our hospital with a rectovaginal septum mass that was an incidental finding by physical examination. The patient was asymptomatic. Magnetic resonance imaging (MRI) was performed to assess the relationship between the tumor and the surrounding tissues. MRI revealed a solid mass with distinct borders in the rectovaginal septum measuring 4.4 cm × 3.8 cm × 4.9 cm(Figure 1). Tumor markers were negative. On physical examination, the mass had well-defined edges and was not tender on palpation.

Mixed ferro to diamagnetic transition in Hf doped CaSnO3 perovskite system

In the present study, hafnium (Hf4+) is doped with CaSnO3 (CSO) perovskite synthesized by facile co-precipitation method and their structural, vibrational, morphological and room temperature magnetization properties are investigated. X-ray diffraction analysis using Rietveld refinement method reveal orthorhombic perovskite structure with a reduction in crystallite size from 34 nm to 30 nm in Hf doped CSO. The metal oxide vibrations below 1000 cm−1 indicate the presence of Sn–O bonds and variation in the force constant values supports the incorporation of Hf4+ ions. Raman active modes and order-disorder parameters are probed by Raman scattering studies. Mixed cubes with well-defined edges are seen in FE-SEM images. Pristine CSO exhibits a co-existence of ferromagnetic and diamagnetic nature whereas Hf4+ doping leads to S-type diamagnetic behaviour.