91 research outputs found

    A Bibliometric Analysis on Recent Classification Techniques for Alzheimer’s Disease

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    Alzheimer\u27s disease (AD) has been studied extensively to better understand the complexities of this disease and to address the numerous unanswered questions about prognosis and diagnosis. To be able to determine and allocate the resources appropriate to the research area, a detailed understanding of the research topic is much needed. Along with the tremendous expansion in the scope of neurodegenerative disease treatment research, the diversity of technologies to help the research continues to expand. Many studies have investigated into how AD affects different brain structures as the disease progresses, using various image processing methods to derive a variety of brain structure steps. To detect AD, structural magnetic resonance imaging (sMRI) is utilized to detect delicate structural variations in the brain. MRI is preferred over other modalities for identifying the structural changes in the brain caused by neurodegenerative diseases and their significance for AD diagnosis and prognosis. Hippocampal atrophy is a significant biomarker for assessing and diagnosing AD. The statistical properties obtained by texture analysis on the MRI based on a biomarker can be used to identify and further evaluate subtle changes in neurodegeneration. To distinguish normal control subjects from AD patients, various Neural Network-based algorithms have been developed. Consequently, this analysis focuses on understanding the recent developments by using an enriched collection of papers available on Scopus, and thus assists in understanding and providing a guided perspective for assigning research resources. The analysis is focusing on various statistical data obtained from Scopus, such as source, document type, affiliations, and so on, to analyze and collate current trends, research activity, and the impact of several notable writers, institutes/organizations, and countries in the respective research domain

    Assessment of risk factors and its fetal outcome of preterm birth: in rural tertiary care hospital, Karad, Maharashtra

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    Background: Preterm birth is an alarming cause of complication in pregnancy that leads to an immenseburden for imitation of children to their householders and health care providers. The present study was tofind out the functional relationship of preterm birth (PTB) and its study parameters at the Krishna Hospitaland Medical Research Centre Karad, Maharashtra from 2016–17. In SPSS (20.0), IBM, INDIA, multipleregression method was used to analyze the results.Methods: This was cross-sectional study done at rural tertiary care hospital, Karad. The examination wasdone in the ob-gyn. ward and various details were collected in the form of the questionnaire at presentthat ward with support of oral discussion of that patient.Results: Age and many more demographic variables were significantly associated with its fetal outcome ofpreterm birth. Also, it seems that pregnancy-induced hypertension, placenta diameter; numbers of meals,delivery mode, and those reasons were effective measures of risk factors of assessment of preterm birth.Conclusions: All the variables analyzed in this study were the part of the determinants of PTB needsto check time to time during the period of pregnancy. Heath care providers still need to take efforts forpregnancy-induced hypertension, placenta diameter

    Bimetallic metal-organic frameworks for controlled catalytic graphitization of nanoporous carbons

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    Single metal-organic frameworks (MOFs), constructed from the coordination between one-fold metal ions and organic linkers, show limited functionalities when used as precursors for nanoporous carbon materials. Herein, we propose to merge the advantages of zinc and cobalt metals ions into one single MOF crystal (i.e., bimetallic MOFs). The organic linkers that coordinate with cobalt ions tend to yield graphitic carbons after carbonization, unlike those bridging with zinc ions, due to the controlled catalytic graphitization by the cobalt nanoparticles. In this work, we demonstrate a feasible method to achieve nanoporous carbon materials with tailored properties, including specific surface area, pore size distribution, degree of graphitization, and content of heteroatoms. The bimetallic-MOF-derived nanoporous carbon are systematically characterized, highlighting the importance of precisely controlling the properties of the carbon materials. This can be done by finely tuning the components in the bimetallic MOF precursors, and thus designing optimal carbon materials for specific applications

    Nanoarchitectured Graphene-Based Supercapacitors for Next-Generation Energy-Storage Applications

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    Tremendous development in the field of portable electronics and hybrid electric vehicles has led to urgent and increasing demand in the field of high‐energy storage devices. In recent years, many research efforts have been made for the development of more efficient energy‐storage devices such as supercapacitors, batteries, and fuel cells. In particular, supercapacitors have great potential to meet the demands of both high energy density and power density in many advanced technologies. For the last half decade, graphene has attracted intense research interest for electrical double‐layer capacitor (EDLC) applications. The unique electronic, thermal, mechanical, and chemical characteristics of graphene, along with the intrinsic benefits of a carbon material, make it a promising candidate for supercapacitor applications. This Review focuses on recent research developments in graphene‐based supercapacitors, including doped graphene, activated graphene, graphene/metal oxide composites, graphene/polymer composites, and graphene‐based asymmetric supercapacitors. The challenges and prospects of graphene‐based supercapacitors are also discussed

    A rare case of calcaneal intraosseous schwannoma

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    A 42-year old female reported atraumatic painful swelling in her left ankle and heel since one month. X-ray showed an expansile lytic lesion with thinning of cortex at the anterior end of the left calcaneum. Curettage of the lesion was done and cavity packed with composite bone graft. Postoperative period was uneventful, and patient was ambulatory without aid. Histopathology report showed intraosseous schwannoma. Intraosseous schwannoma is a very rare tumor accounting for only 0.2% of all primary bone tumors. This is the second case of intraosseous schwannoma of calcaneum reported as per literature

    Cemented hemi-arthroplasty in proximal femoral fractures in elderly with severe osteoporosis: A case series

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    Context: Inter-trochanteric fractures in osteoporotic bones which are grossly comminuted are highly unstable and difficult to treat. Conservative treatment with traction and prolonged immobilization lands up with many complications and often fatality. Rate of failure with internal fixation with dynamic hip screw has been found to be high, especially in osteoporotic bones. Revision osteo-synthesis is technically demanding and leads to complications. Aim: To assess the efficacy of cemented hemiarthroplasty in the management of proximal femoral fractures in elderly patients with severe osteoporosis. Settings and Design: A Case series of 50 cases. Materials and Methods: We divided these fractures into three groups and accordingly the prosthesis was used. Group 1- intact calcar and lesser trochanter non-communited-AMP type of bipolar prosthesis, Group 2- fracture of calcar - Thompson′s type of bipolar prosthesis with calcar reconstruction, Group 3- group 2 + instability of postero-medial wall-modular type bipolar prosthesis with lesser trochanter and calcar reconstruction. Greater trochanter, calcar, and lesser trochanter were reconstructed with encirclage, tension band wiring, fashioned bone graft, or bone cement collar accordingly. Results: In our study of 50 cases with mean age 79.57 years, 20 cases were type 1, 19 type 2, and 11 type 3 fractures. The average Harris hip score was 79. Excellent to fair results were obtained at follow-up in 46 (92%) and in 4 (8%) results were poor. The mean Harris hip score was 83 (good) in Group- I, 79 (Fair) in Group- II, and 72 (Fair) in Group- III patients. Average hospital stay was 12.5 days. There were four cases of superficial operative site infection which were treated with short course of oral antibiotics. Four cases died of medical complications, earliest being 3 months, and latest being 18 months. No case of loosening of the prosthesis, break in the cement or sinking of prosthesis was seen

    Metal-Organic Framework-Derived Nanoporous Metal Oxides toward Supercapacitor Applications: Progress and Prospects

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    Transition metal oxides (TMOs) have attracted significant attention for energy storage applications such as supercapacitors due to their good electrical conductivity, high electrochemical response (by providing Faradaic reactions), low manufacturing costs, and easy processability. Despite exhibiting these attractive characteristics, the practical applications of TMOs for supercapacitors are still relatively limited. This is largely due to their continuous Faradaic reactions, which can lead to major changes or destruction of their structure as well phase changes (in some cases) during cycling, leading to the degradation in their capacitive performance over time. Hence, there is an immediate need to develop new synthesis methods, which will readily provide stable porous architectures, controlled phase, as well as useful control over dimensions (1-D, 2-D, and 3-D) of the metal oxides for improving their performance in supercapacitor applications. Since its discovery in late 1990s, metal-organic frameworks (MOFs) have influenced many fields of material science. In recent years, they have gained significant attention as precursors or templates for the derivation of porous metal oxide nanostructures and nanocomposites for next-generation supercapacitor applications. Even though these materials have widespread applications and have been widely studied in terms of their structural features and synthesis, it is still not clear how these materials will play an important role in the development of the supercapacitor field. In this review, we will summarize the recent developments in the field of MOF-derived porous metal oxide nanostructures and nanocomposites for supercapacitor applications. Furthermore, the current challenges along with the future trends and prospects in the application of these materials for supercapacitors will also be discussed

    Sprayed CdO thin films for liquefied petroleum gas (LPG) detection

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    Nanocrystalline cadmium oxide (CdO) thin films were deposited onto glass substrates by a chemical spray pyrolysis method using an aqueous solution of cadmium acetate. These films were characterized for their structural and morphological properties by means of X-ray diffraction (XRD), scanning electron microscopy (SEM) and atomic force microscopy (AFM). The CdO films are oriented along (1 1 1) plane with the cubic crystal structure. These films were utilized in liquefied petroleum gas (LPG) sensors. The dependence of the LPG response on the operating temperature, LPG concentration and CdO film thickness was investigated. The CdO film showed selectivity for LPG over N2 compared to CO2(SLPG / SN2 = 11.3 and SLPG / SC O2 = 1.88) . The maximum LPG response of 34.11% for the film of thickness 0.97 μm at gas concentration of 0.16 vol.% at 698 K was achieved. Additionally, the stability of films has been studied
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