scholarly journals The sudden appearance of SARS-CoV-2

2022 ◽  
pp. 1-21
Author(s):  
Jorge Hidalgo ◽  
Gloria Rodríguez-Vega ◽  
Javier Pérez-Fernández
Keyword(s):  
Sudden Appearance

Biophysics of flagellar motility

1979 ◽  
Vol 12 (2) ◽  
pp. 103-180 ◽  
Author(s):  
Jacob J. Blum ◽  
Michael Hines
Keyword(s):  
Viscous Medium ◽  
Hydrodynamic Interactions ◽  
Eukaryotic Cells ◽  
Flagellar Motility ◽  
Muscle System ◽  
Structured Products ◽  
Filament System ◽  
Complex Organization ◽  
Propagating Waves ◽  
Sudden Appearance

One feature characterizing the transition from prokaryote to eukaryote is the ‘sudden’ appearance of centrioles and their highly structured products, the typical eukaryotic flagella and cilia. These mechanochemical systems appear as fully developed machines, containing some 200 diffierent proteins (Luck et al. 1978) arranged in a remarkably complex organization which has undergone little modification since the advent of the first eukaryotic cells. It is now well established (see, for example, Satir, 1974) that ciliary and flagellar motility is based on a sliding filament mechanism that superficially resembles the far more extensively studied sliding filament system of striated skeletal muscle.The flagellar system, however, appears to be much more complex than the muscle system, because it does not ‘merely’ shorten and generate force, but develops propagating waves and exerts its effects via hydrodynamic interactions with a viscous medium.

Sudden Appearance of Cardiac Arrhythmias After Dexamethasone

JAMA ◽  
1972 ◽  
Vol 221 (12) ◽  
pp. 1402 ◽  
Author(s):  
Gwendolyn B. Schmidt
Keyword(s):  
Cardiac Arrhythmias ◽  
Sudden Appearance

SUDDEN APPEARANCE OF SENILITY AFTER AN ACCIDENT

The Lancet ◽  
1938 ◽  
Vol 232 (5994) ◽  
pp. 135-136 ◽  
Author(s):  
A THOMSON
Keyword(s):  
Sudden Appearance

scholarly journals Achenbach's syndrome: a rare condition

JRSM Open ◽  
2021 ◽  
Vol 12 (9) ◽  
pp. 205427042110471
Author(s):  
Carlos I Higuera-Cetina ◽  
Lina M Montaña-Gómez ◽  
Yelson A Picón-Jaimes ◽  
Javier E Orozco-Chinome ◽  
Iván Lozada-Martínez ◽  
...  
Keyword(s):  
Emergency Services ◽  
Rare Condition ◽  
Limited Disease ◽  
Sudden Appearance

Achenbach's syndrome corresponds to a pathology characterized by the appearance of ecchymoses and bruises on the fingers of the hands and eventually on the feet. It is a benign and self-limited disease, which is accompanied by pain. It generates great concern because its sudden appearance leads women who are the most affected to consult the emergency services. At present, its pathophysiology is unknown and requires knowledge of the disease to diagnose it. It is a must for poorly trained professionals.

scholarly journals Messages, Texts, and Rhetorical Detachment in Contemporary Mahri Poetry

2021 ◽  
pp. 1403-14
Author(s):  
Samuel Liebhaber
Keyword(s):  
Arabic Language ◽  
Written Language ◽  
Structural Motif ◽  
Language Poetry ◽  
Sudden Appearance ◽  
Literary Composition ◽  
Hallmark Feature ◽  
Poetic Work

Despite its geographical and linguistic proximity to the Arabic language, the Mahri (or Mehri) language (ISO 639-3: gdq) of Eastern Yemen and Western Oman has remained a non-written language into the present era. While older generations of Mahri speakers never considered the prospect of a written idiom for their language, recent years have witnessed efforts to compose and circulate texts in the Mahri language. These circumstances have yielded a poetic praxis that traverses the domains of orality and literacy; they also enable us to identify lexical and syntactic characteristics that betoken where in the shifting terrain of oral and literary composition a poetic work occurs. I will examine the appearance of one such lexical and structural motif – the dispatched messenger – in a recently composed collection of Mahri language poetry, The Dīwān of Ḥājj Dākōn (2011). Embarking from the notion of textual autonomy developed by Chafe, Olson, and Tannen, I argue that the sudden appearance of the messenger motif in Ḥājj Dākōn’s poetic collection is a by-product of his adoption of a written practice. In this way, we can establish that a stance of rhetorical detachment is a hallmark feature of an emergent written practice, even at its earliest stages.

scholarly journals INVESTIGATION OF FLOW FIELD OVER POST FLOW MODEL WITH THE AID OF ePIV SYSTEM

2018 ◽  
Vol 18 (1) ◽  
pp. 31-40
Author(s):  
Ali S Abbas ◽  
Noor Y Abbas ◽  
Shahed A Kamel
Keyword(s):  
Flow Field ◽  
Velocity Vector ◽  
Flow Model ◽  
Low Cost ◽  
Adverse Pressure Gradient ◽  
High Tech ◽  
Educational Tool ◽  
Theoretical Interest ◽  
Compact Size ◽  
Sudden Appearance

Post flow model was used in the present study as an insert model for the interactiveflow study innovative device namely called ePIV. The separation of the flow and itssubsequent reattachment to a solid surface occurs in many systems, and is of practical aswell as of theoretical interest. Three different values for the upstream velocity were selectedin the present work within the range (14, 24, and 32 mm\s) and two set of figures wereobserved for every value of upstream velocity. First set for velocity vector plots and shadedcolor plot while the second is for picture frames captured for the purpose of ePIV systemsoftware. It was found that ePIV system can be used in diverse educational settings becauseof its effectiveness as an educational tool, high-tech appeal, compact size, low cost andsafety. Also, It was concluded that the sudden appearance for the post height result in avortex spot that lead to an adverse pressure gradient concentrate the majority of high bulkvelocity magnitude at the upper half of the post flow model height.

scholarly journals Middle and late Badenian palaeoenvironments in the northern Vienna Basin and their potential link to the Badenian Salinity Crisis

2018 ◽  
Vol 69 (2) ◽  
pp. 149-168 ◽  
Author(s):  
Mathias Harzhauser ◽  
Patrick Grunert ◽  
Oleg Mandic ◽  
Petra Lukeneder ◽  
Ángela García Gallardo ◽  
...  
Keyword(s):  
Fish Assemblages ◽  
Depositional Environments ◽  
Hydrocarbon Exploration ◽  
Vienna Basin ◽  
Seismic Surveys ◽  
Marine Mollusc ◽  
Potential Link ◽  
Glass Sponges ◽  
Sudden Appearance ◽  
Climate Transition

AbstractHydrocarbon exploration in the Bernhardsthal and Bernhardsthal-Sued oil fields documents an up to 2000 m thick succession of middle and upper Badenian deposits in this part of the northern Vienna Basin (Austria). Based on palaeontological analyses of core-samples, well-log data and seismic surveys we propose an integrated stratigraphy and describe the depositional environments. As the middle/late Badenian boundary is correlated with the Langhian/Serravallian boundary, the cores capture the crucial phase of the Middle Miocene Climate Transition. The middle Badenian starts with a major transgression leading to outer neritic to upper bathyal conditions in the northern Vienna Basin, indicated byBathysiphon-assemblages and glass-sponges. A strong palaeo-relief and rapid synsedimentary subsidence accentuated sedimentation during this phase. The middle/late Badenian boundary coincides with a major drop of relative sea level by about 200 m, resulting in a rapid shift from deeper marine depositional environments to coastal and freshwater swamps. In coeval marine settings, a more than 100 m thick unit of anhydrite-bearing clay formed. This is the first evidence of evaporite precipitation during the Badenian Salinity Crisis in the Vienna Basin. Shallow lagoonal environments with diverse and fully marine mollusc and fish assemblages were established during the subsequent late Badenian re-flooding. In composition, the mollusc fauna differs considerably from older ones and is characterized by the sudden appearance of species with eastern Paratethyan affinities.

DNA-based quantification of Fusarium oxysporum f. sp. vasinfectum in environmental soils to describe spatial variation in inoculum density

Plant Disease ◽  
2022 ◽  
Author(s):  
Roy Davis ◽  
Thomas Isakeit ◽  
Thomas Chappell
Keyword(s):  
United States ◽  
Fusarium Oxysporum ◽  
Spatial Scales ◽  
The United States ◽  
Inoculum Density ◽  
Root Knot Nematode ◽  
West Texas ◽  
Sudden Appearance ◽  
Digital Polymerase Chain Reaction ◽  
Race 4

Fusarium wilt of cotton, caused by the soilborne fungal pathogen Fusarium oxysporum f. sp. vasinfectum (FOV), occurs in regions of the United States where cotton (Gossypium spp.) is grown. Race 4 of this pathogen (FOV4) is especially aggressive and does not require the co-occurrence of the root knot nematode (Meloidogyne incognita) to infect cotton. Its sudden appearance in far-west Texas in 2016 after many years of being restricted to California is of great concern, as is the threat of its continued spread through the cotton-producing regions of the United States. The aim of this research was to analyze the spatial variability of FOV4 inoculum density in the location where FOV4 is locally emerging, using quantitative and droplet digital polymerase chain reaction (qPCR and ddPCR) methods. Soil samples collected from a field with known FOV4 incidence in Fabens, Texas were analyzed. Appreciable variation in inoculum density was found to occur at spatial scales smaller than the size of plots involved in cultivar trial research, and was spatially autocorrelated (Moran’s I, Z = 17.73, p < 0.0001). These findings indicate that for cultivar trials, accounting for the spatial distribution of inoculum either by directly quantifying it or through the use of densely-distributed “calibration checks” is important to the interpretation of results.

The Relationship Between Head Circumference and the Development of Communicating Hydrocephalus in Infants Following Intraventricular Hemorrhage

PEDIATRICS ◽  
1975 ◽  
Vol 56 (1) ◽  
pp. 74-77 ◽  
Author(s):  
Rowena Korobkin
Keyword(s):  
Clinical Sign ◽  
Premature Infants ◽  
Gestational Age ◽  
Head Circumference ◽  
Intraventricular Hemorrhage ◽  
Clinical Status ◽  
Clinical Deterioration ◽  
Communicating Hydrocephalus ◽  
Sudden Appearance ◽  
The Relationship

Rapidly enlarging head circumference is a standard clinical sign of progressive hydrocephalus in an infant. Six neonates 29 to 36 weeks gestational age, with intraventricular hemorrhage, confirmed by ventricular tap, had head circumferences measured at intervals from birth. The sudden appearance of rapidly expanding head size, not associated with changing clinical status, occurred 9 to 20 days after the estimated time of hemorrhage in all of the infants. Air ventriculography within three days of abnormal acceleration of head circumference growth demonstrated moderately to severely dilated ventricles. The ventricles were probably enlarging slowing from the time of hemorrhage because there was no associated clinical deterioration in the infants coincident with the rapid increase in head circumference. After intraventncular hemorrhage, enlarging head circumference appears to be an insensitive sign of hydrocephalus in premature infants.

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