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    Wyświetlanie 1-8 z 8
    Tytuł:
    Current research opportunities for image processing and computer vision
    Autorzy:
    Gupta, Abhishek
    Tematy:
    computer vision
    image processing
    imaging applications
    opportunities
    challenges
    application
    Pokaż więcej
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Powiązania:
    https://bibliotekanauki.pl/articles/305319.pdf  Link otwiera się w nowym oknie
    Opis:
    Image processing and computer vision is an important and essential area in today’s scenario. Several problems can be solved through computer vision techniques. There are a large number of challenges and opportunities which require skills in the field of computer vision to address them. Computer vision applications cover each band of the electromagnetic spectrum and there are numerous applications in every band. This article is targeted to the research students, scholars and researchers who are interested to solve the problems in the field of image processing and computer vision. It addresses the opportunities and current trends of computer vision applications in all emerging domains. The research needs are identified through available literature survey and classified in the corresponding domains. The possible exemplary images are collected from the different repositories available for research and shown in this paper. The opportunities mentioned in this paper are explained through the images so that a naive researcher can understand it well before proceeding to solve the corresponding problems. The databases mentioned in this article could be useful for researchers who are interested in further solving the problem. The motivation of the article is to expose the current opportunities in the field of image processing and computer vision along with corresponding repositories. Interested researchers who are working in the field can choose a problem through this article and can get the experimental images through the cited references for working further.
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Molecular Characterization of Two Myxosporean Species, Henneguya namae Haldar et al. 1983 and Myxobolus sophorae Jayasri, 1982 (Myxosporea: Myxobolidae)
    Autorzy:
    Garg, Anupma
    Chaudhary, Anshu
    Gupta, Abhishek
    Kumar, Abhinav
    Sharma, Bindu
    Singh, Hridaya Shanker
    Tematy:
    fish
    Henneguya
    India
    Myxobolus
    phylogeny
    18S rDNA
    Pokaż więcej
    Wydawca:
    Uniwersytet Jagielloński. Wydawnictwo Uniwersytetu Jagiellońskiego
    Powiązania:
    https://bibliotekanauki.pl/articles/52057885.pdf  Link otwiera się w nowym oknie
    Opis:
    In Indian freshwater fish myxosporean infections are among the most cosmopolitan parasites, they are relatively well studied morphologically but their phylogenetic relationships were unclear and the genetic data is limited only to a few species. The study aims to present molecular data for two myxosporean species, Henneguya namae Haldar et al. 1983 and Myxobolus sophorae Jayasri, 1982 collected from Indian freshwater fish, the elongate glass-perchlet Chanda nama (=Ambassis nama) and pool barb Puntius sophore, respectively. In the present study molecular data are provided for H. namae and M. sophorae using nested PCR. The obtained partial 18S rDNA gene sequences were analyzed using maximum likelihood (ML) and Bayesian inference (BI) methods. The 18S rDNA gene sequences of H. namae showed similarity with the sequences of H. chaudhuryi, Henneguya sp. RA-2015, H. voronini and H. setiuensis about 72.1 to 78% and M. sophorae with Myxobolus ticto was about 90% respectively. The aim of this paper was to identify H. namae and M. sophorae morphologically and using molecular methods.
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Using pyrrolizine-fused bipolar PAHs as a new strategy towards efficient red and NIR emissive dyes
    Autorzy:
    Lindner, Marcin
    Matulaitis, Tomas
    Zysman-Colman, Eli
    Gupta, Abhishek Kumar
    Bartkowski, Krzysztof
    Morawiak, Maja
    Wydawca:
    Royal Society of Chemistry
    Cytata wydawnicza:
    K. Bartkowski, A. K. Gupta, T. Matulaitis, M. Morawiak, E. Zysman-Colman and M. Lindner, Org. Chem. Front., 2024, https://doi.org/10.1039/D3QO01914D
    Opis:
    We report the synthesis and characterization of the first pyrrolizine-embedded PAH systems. The bipolar core, based on a naphthalimide and indole fusion, was successfully synthesized through a one-pot cascade of Suzuki/Boc deprotection/Buchwald-Hartwig transformations. A facile post-functionalization of the unoccupied β-position of the heterocycle with aromatic amines as a donor subunit led to obtaining a set of donor-acceptor architecture-based dyes. Effective narrowing of the HOMO-LUMO gap, along with its tuning by the change in donor strength together with stabilization of π conjugation within the pyrrolizine-NAI core, provided a route to near-infrared (NIR) emission not only in solution (~740 nm) but also in the solid-state (~700 nm).
    National Centre for Research and Development, Poland, (LIDER/21/0077/L-11/19/NCBR/2020); Polish Ministry of Education and Science to outstanding young scientists (2/DSP/2021); Leverhulme Trust (RPG-2022-032); Engineering and Physical Sciences Researh Council (EP/R035164/1, EP/W007517)
    Dostawca treści:
    Repozytorium Centrum Otwartej Nauki
    Artykuł
    Tytuł:
    Triple thyroglossal duct cysts in an adult: a rare case report and review of literature
    Autorzy:
    Bhardwaj, Abhishek
    Gupta, Kartikesh
    Malhotra, Manu
    Priya, Madhu
    Verma, Mamta
    Tematy:
    complication
    diagnosis,
    duct
    recurrence
    thyroglossal cyst
    treatment
    Pokaż więcej
    Wydawca:
    Uniwersytet Rzeszowski. Wydawnictwo Uniwersytetu Rzeszowskiego
    Powiązania:
    https://bibliotekanauki.pl/articles/2037685.pdf  Link otwiera się w nowym oknie
    Opis:
    Introduction. Thyroglossal duct cyst (TDC) is the most common cause of congenital neck mass. These can present anywhere from foramen caecum to mediastinum. Usually presents as a solitary cyst, the double thyroglossal cyst is very rare and a triple thyroglossal cyst has never been reported. Aim. Herein, we report an atypical case of triple thyroglossal cyst, at levels of hyoid, thyrohyoid membrane and thyroid isthmus managed surgically without any complication. Description of the case. We are presenting case of a 48-year-old female who presented to us with the complaint of anterior neck swelling since birth. On work up it was diagnosed as a case of the thyroglossal duct cyst and was intraoperatively found to have 3 distinct cystic swellings connected to a common stalk lying beneath the hyoid. It was successfully treated by modified Sistrunk’s procedure. There was no evidence of recurrence on follow up for 6 months. Considering atypical presentations, there are 9 cases reported with the double thyroglossal duct cyst, TDC within the thyroid gland and sublingual TDC. Such presentations make the diagnosis more challenging, leading to improper treatment. Conclusion. We are presenting this case as there is no case reported in English literature with a triple thyroglossal duct cyst. An awareness that thyroglossal cyst can present as multiple cysts is important for clinician in order to perform correct surgical management and to avoid the most feared complication of recurrence.
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    External validation of the Brain Tumour Reporting and Data System (BT-RADS) in the multidisciplinary management of post-treatment gliomas
    Autorzy:
    Trivedi, Kamaxi Hitendrakumar
    Bhole, Pallavi
    Thakur, Meenakshi
    Guha, Amrita
    Gupta, Tejpal
    Mahajan, Abhishek
    Opis:
    Purpose: To independently and externally validate the Brain Tumour Reporting and Data System (BT-RADS) for post-treatment gliomas and assess interobserver variability. Material and methods: In this retrospective observational study, consecutive MRIs of 100 post-treatment glioma patients were reviewed by two independent radiologists (RD1 and RD2) and assigned a BT-RADS score. Inter-observer agreement statistics were determined by kappa statistics. The BT-RADS-linked management recommendations per score were compared with the multidisciplinary meeting (MDM) decisions. Results: The overall agreement rate between RD1 and RD2 was 62.7% (k = 0.67). The agreement rate between RD1 and consensus was 83.3% (k = 0.85), while the agreement between RD2 and consensus was 69.3% (k = 0.79). Among the radiologists, agreement was highest for score 2 and lowest for score 3b. There was a 97.9% agreement between BT-RADS-linked management recommendations and MDM decisions. Conclusions: BT-RADS scoring led to improved consistency, and standardised language in the structured MRI reporting of post-treatment brain tumours. It demonstrated good overall agreement among the reporting radiologists at both extremes; however, variation rates increased in the middle part of the spectrum. The interpretation categories linked to management decisions showed a near-perfect match with MDM decisions.
    Dostawca treści:
    Repozytorium Uniwersytetu Jagiellońskiego
    Artykuł
    Tytuł:
    Obstructive sleep apnea risk for driving license applicants in India – A community based study
    Autorzy:
    Dubey, Abhishek
    Bajaj, Darshan K.
    Mishra, Apurva
    Singh, Balendra P.
    Gupta, Vinay
    Kant, Surya
    Dixit, Swati
    Tematy:
    obstructive sleep apnea
    drivers
    sleepiness
    road traffic accidents
    STOP-Bang
    high blood pressure
    Pokaż więcej
    Wydawca:
    Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
    Powiązania:
    https://bibliotekanauki.pl/articles/2161795.pdf  Link otwiera się w nowym oknie
    Opis:
    Objectives: To determine the risk of obstructive sleep apnea (OSA) for male permanent driving license (DL) applicants of Lucknow, India. Material and Methods: In this cross-sectional community based, study body mass index, waist–hip ratio, blood pressure of each subject were determined as an anthropometric parameter along with the history of habit of smoking, tobacco chewing, alcohol consumption. STOP-Bang (Snoring, Tired or sleepy, Observed apnea, high blood Pressure, Body mass index, Age, Neck, Gender) Questionnaire – a scoring risk assessment tool – was applied for assessment of OSA risk (high OSA risk defined by score ≥ 3) for 542 male DL recipients at 2 Regional Transport Office (RTO) centers in Lucknow, India. The statistical software SPSS 17.0 was applied to the testing. Results: In total 23% (N = 125) of participants were found with the risk of OSA. High blood pressure (≥ 140/90 mm Hg) was found for the maximum number of participants (40.5%) followed by neck circumference > 40 cm (17.1%), age (> 50 years old) (15.3%), snoring (12.3%) and tired/sleepy (10.5%). Mean values of age, anthropometric measurements and blood pressure were observed significantly higher (p < 0.001) for participants with the OSA risk. In this population the risk of OSA risk (STOP-Bang score ≥ 3) was observed for 6.7% of young (< 35 years old), 34% of middle (35–45 years old) and 73% of elder age adults (> 45 years old). Conclusions: In view of findings of this study a high number of male driving license applicants were observed with the risk of OSA. Therefore efforts should be made to develop a national screening guideline/protocol for the OSA risk assessment for driving license applicants in India. This may reduce the possibility of road traffic accidents due to the OSA-associated fatigue and drowsiness behind the wheels. Int J Occup Med Environ Health 2018;31(1):25–36
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    High-grade gliomas associated with neurofibromatosis type 1 : analysis of imaging features and literature review
    Autorzy:
    Nair, Swetha M
    Jain, Ayushi
    Moiyadi, Aliasgar
    Sridhar, Epari
    Chopade, Pradnya
    Chinnaswamy, Girish
    Shetty, Prakash
    Singh, Vikas
    Chatterjee, Abhishek
    Dasgupta, Archya
    Choudhari, Amitkumar
    Prasad, Maya
    Gupta, Tejpal
    Sahu, Arpita
    Vijan, Antariksh
    Goda, Jayant Sastri
    Opis:
    Introduction: Neurofibromatosis type 1 (NF-1) is an autosomal dominant genetic disorder notably linked to the development of central nervous system neoplasms – predominantly low-grade glial tumours like pilocytic astrocytoma. Highgrade glial neoplasms (HGG) are rarer and more prevalent in adults, with very few comprehensive studies on imaging features of the same. This study aims to investigate the imaging characteristics of HGG in patients with NF-1, to identify alarming imaging features that potentially indicate higher-grade tumours. Material and methods: Conducting a retrospective analysis, we examined histologically confirmed cases of HGG within clinically diagnosed NF-1 patients over 8 years. Our analysis scrutinised various imaging parameters, and histopathological and molecular data. Results: Eight cases of NF-1-associated HGG were identified. Predominant features included large tumour size (> 5 cm) in most (77.8%), intra-tumoral necrosis (77.8%), and moderate to marked perilesional oedema (55.55%). Notably, more than half were centred in midline structures. Molecular analysis highlighted diverse statuses of ATRX, IDH1R132H, and P53. Conclusions: This retrospective analysis of the largest single-centre dataset on imaging of HGG in NF-1 patients reported in the literature underscores that it may be more common than previously surmised. The need to look for alarming imaging indicators and raise suspicion in atypical locations like midline structures is essential for early detection and appropriate treatment.
    Dostawca treści:
    Repozytorium Uniwersytetu Jagiellońskiego
    Artykuł
      Wyświetlanie 1-8 z 8

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