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| http://dx.doi.org/10.1136/oem.46.9.675 | DOI Listing |
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Numerical investigation of coal pillar damage mechanisms for various width-to-height ratios.
Sci Rep
January 2025
School of Mines, China University of Mining and Technology, No.1 Daxue Rd, Xuzhou, 221116, China.
Pillar stability has garnered significant attention owing to the effects of pillars on coal resource recovery rate, coal pillar stability, and coal bump risk. This study examined the roadway stability control principles of conventional and yield coal pillars. The conventional coal pillars were designed as load-bearing structures with a high load-bearing capacity to carry most of the abutment load, while yield coal pillars were designed as buffer structures for transferring rapidly increasing abutment loads to adjacent solid coal ribs by progressive deformation.
View Article and Find Full Text PDFAortic regurgitation in ankylosing spondylitis-an echocardiography follow-up study.
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January 2025
Department of Rheumatology and Inflammation Research, Institute of Medicine at Sahlgrenska Academy, University of Gothenburg, Göteborg, Sweden.
Objectives: To investigate the long-term course of aortic regurgitation (AR) and the width of the proximal ascending aorta (PAA) in patients with ankylosing spondylitis (AS).
Method: This is a follow-up cohort study of patients with AS examined with echocardiography at inclusion (2009 to 2011). Out of the initial 187, a subgroup of 52 patients (54% men, mean age 62 years) was selected for follow-up based on presence/absence of AR at baseline; 26 with AR (18 mild, 7 moderate, 1 severe) and 26 age/sex-matched without AR.
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Ohio University Heritage College of Osteopathic Medicine, Dublin, Ohio, U.S.A.
Pharyngitis is commonly caused by the gram positive bacteria, streptococcus. Given the potential morbid complications of untreated streptococcal pharyngitis, antibiotics are critical. One of the rarer complications is pulmonary-renal syndrome (PRS), defined as rapidly progressive glomerulonephritis and diffuse alveolar hemorrhage.
View Article and Find Full Text PDFPneumocystis Jirovecii Pneumonia in Two Immunosuppressed Non-HIV Infected Patients: A Clinical and Therapeutic Analysis.
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Department of Clinical Medicine, School of Medicine, Qinghai University, Xining, People's Republic of China.
Pneumocystis jirovecii pneumonia (PJP) is an opportunistic fungal infection that often occurs secondary to human immunodeficiency virus (HIV) infection. However, for non-HIV immunocompromised patients, such as those undergoing novel immunosuppressive treatments to manage malignancies, organ transplants, or connective tissue diseases, PJP is emerging as an increasing threat. The clinical manifestations of PJP in HIV-infected and non-HIV-infected patients differ significantly.
View Article and Find Full Text PDFSeronegative Autoimmune Encephalitis With Rapidly Progressive Parkinsonism.
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Geriatric Medicine, All India Institute of Medical Sciences, New Delhi, New Delhi, IND.
Seronegative autoimmune encephalitis is an infrequent entity in older patients, and its presentation as rapidly progressive parkinsonism is rarely seen in cases of autoimmune encephalitis. We present a case report of an older patient who presented with worsening Parkinson's-like symptoms over a month. We highlight the importance of considering autoimmune encephalitis as a potential cause of rapidly progressive parkinsonism and the importance of radiological findings when the entire autoimmune panel is negative in such patients.
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