We present an implementation of pure-time-delay generation in analog signals located in the kilo-Hertz frequency band. The controlled constant delays that are produced engage in a feedback system to investigate the dynamic response of microcantilevers. Delayed systems offer a vast richness of eigenvalues resulting in the possibility of excitations at frequencies other than that of the fundamental mode. Different cantilever actuation and delay generation approaches are investigated and compared, and detailed experimental observation of the dynamic response of the system is presented. Based on our results, an acoustic excitation is devised that may be used as an efficient sensor.
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http://dx.doi.org/10.1016/j.ultramic.2007.03.013 | DOI Listing |
Sci Rep
January 2025
Center of Excellence for Antimicrobial Resistance and Stewardship, Department of Microbiology, Faculty of Medicine, Chulalongkorn University, Bangkok, 10330, Thailand.
The pathogenic oomycete Pythium insidiosum causes a fatal infectious illness known as pythiosis, impacting humans and certain animals in numerous countries in the tropics and subtropics. Delayed diagnosis is a primary factor contributing to the heightened morbidity and mortality associated with the disease. Several new serodiagnostic methods have been developed to improve the identification of pythiosis.
View Article and Find Full Text PDFBMC Pediatr
January 2025
Geriatric Mental Health Research Center, Department of Psychiatry, School of Medicine, Iran University of Medical Sciences, Tehran, Iran.
Background: This case report describes a unique presentation of sphingosine-1-phosphate lyase insufficiency syndrome (SPLIS) caused by a rare SGPL1 variant, highlighting the diagnostic and management challenges associated with this condition.
Case Presentation: A 2-year-old Iranian female presented with steroid-resistant nephrotic syndrome (NS), primary adrenal insufficiency (AI), growth delay, seizures, and hyperpigmentation. Laboratory evaluation revealed hypoalbuminemia, significant proteinuria, hyperkalemia, and elevated adrenocorticotropic hormone (ACTH) levels.
BMC Surg
January 2025
Department of General, Visceral and Transplantation Surgery, LMU University Hospital Munich, LMU Munich, Munich, Germany.
Background: Pancreatic ductal adenocarcinoma (PDAC) typically occurs in an older patient population. Yet, early-onset pancreatic cancer (EOPC) has one of the fastest growing incidence rates. This study investigated the influence of age and tumor location on postoperative morbidity and mortality in a large, real-world dataset.
View Article and Find Full Text PDFAm J Ophthalmol
January 2025
Department of Ophthalmology, Boston Children's Hospital, Boston, Massachusetts; Harvard Medical School, Boston, Massachusetts. Electronic address:
Introduction: Botulinum toxin is an alternative to conventional strabismus surgery for treatment for acute, acquired, comitant esotropia (AACE). Previous studies suggest that the two treatment approaches may be equally effective for 6 months. The purpose of our study was to determine whether botulinum toxin remains as effective as strabismus surgery for 36 months after treatment.
View Article and Find Full Text PDFTravel Med Infect Dis
January 2025
General Directorate of Welfare, Regione Lombardia, Milano, Italy.
Introduction: Here we reported the virological, entomological and epidemiological characteristics of the large autochthonous outbreak of dengue (DENV) occurred in a small village of the Lombardy region (Northern Italy) during summer 2023.
Methods: After the diagnosis of the first autochthonous case on 18 August 2023, public health measures, including epidemiological investigation and vector control measures, were carried out. A serological screening for DENV antibodies detection was offered to the population.
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