نتایج جستجو برای: mass defect
تعداد نتایج: 568245 فیلتر نتایج به سال:
Liquid chromatography-high resolution mass spectrometry (LC-MS) has emerged as one of the most widely used platforms for untargeted metabolomics due to its unparalleled sensitivity and metabolite coverage. Despite its prevalence of use, the proportion of true metabolites identified in a given experiment compared to background contaminants and ionization-generated artefacts remains poorly unders...
The high temperature transport properties of langasite, La3Ga5SiO14, were investigated with special attention focused on their potential impact on the utilization of langasite as a mass sensitive resonant platform for high temperature sensor applications. The electrical properties of acceptor and donor doped langasite were examined at temperatures ranging from 700 to 1000C, and pO2 of 1 to 10at...
Remote and Conjugated Modeling of Heat–Mass Transfer and Defect Formation in Technological Processes
Two series of ethylene oxide (EO) surfactants, polyethylene glycols (PEGs from EO3 to EO33) and linear alkyl ethoxylates (LAEs C-9 to C-15 with EO3-EO28), were identified in hydraulic fracturing flowback and produced water using a new application of the Kendrick mass defect and liquid chromatography/quadrupole-time-of-flight mass spectrometry. The Kendrick mass defect differentiates the proton,...
Prenatal ultrasonography at 24 weeks disclosed a fetus with a large mass protruding from the occiput. The mass was an invasive, undifferentiated mesenchymal neoplasm of the scalp associated with a defect in the occipital bone (cranium bifidum). The tumor may have derived from neural crest at the site of rhombencephalic closure. The tumor itself would seem to be a sporadic event, but the cranium...
BACKGROUND The Currarino triad is a rare hereditary syndrome comprising anorectal malformation, sacral bony defect, and presacral mass. Most of the patients are diagnosed during infancy. CASE PRESENTATION A 44-year-old man was diagnosed with Currarino triad, with a huge presacral teratoma and meningocele. One-stage surgery via posterior approach was successful. CONCLUSIONS Treatment of the ...
Retinal dysplasia mimicking intraocular tumor: MR imaging findings with histopathologic correlation.
We report a 6-month-old boy who presented with unilateral leukocoria, retinal detachment, and a retrolental mass in a microphthalmic eye based on retinal dysplasia with concurrent optic nerve aplasia. Dysplastic retinal tissue, a rare congenital defect, may create a clinical and radiologic picture of an intraocular mass closely resembling tumor tissue. MR imaging findings with histopathologic c...
Background : Pentalogy of Cantrell is a very rare congenital anomaly which is diagnosed with severe thoracoabdominal defect, omphalocele, lower sternal defect, anterior diaphragmatic defect anterior pericardial defect and ectopia cordis.Pathogenesis is unknown, mesodermal developmental defects in 14-18 days after conception maybe responsible . Case Report: The case is newborn with omphalocele ...
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