Limited accuracy of transurethral and periurethral intrasphincteric injections of cellular suspension

2018 ◽  
Vol 17 (2) ◽  
pp. e1774
Author(s):  
B. Dybowski ◽  
A. Burdzińska ◽  
W. Zarychta-Wiśniewska ◽  
A. Kulesza ◽  
J. Filipiuk ◽  
...  
Keyword(s):  
Cellular Suspension ◽  
Limited Accuracy

Limited accuracy of transurethral and periurethral intrasphincteric injections of cellular suspension

2018 ◽  
Vol 37 (5) ◽  
pp. 1612-1622 ◽  
Author(s):  
Anna Burdzinska ◽  
Bartosz Dybowski ◽  
Weronika Zarychta-Wiśniewska ◽  
Agnieszka Kulesza ◽  
Jakub Hawryluk ◽  
...  
Keyword(s):  
Cellular Suspension ◽  
Limited Accuracy

Time and Latitude in South Africa

1972 ◽  
Vol 1 ◽  
pp. 27-38
Author(s):  
J. Hers
Keyword(s):  
South Africa ◽  
Cape Town ◽  
Astronomical Observations ◽  
Royal Observatory ◽  
The Republic ◽  
Astronomical Determination ◽  
Limited Accuracy ◽  
Better Than

In South Africa the modern outlook towards time may be said to have started in 1948. Both the two major observatories, The Royal Observatory in Cape Town and the Union Observatory (now known as the Republic Observatory) in Johannesburg had, of course, been involved in the astronomical determination of time almost from their inception, and the Johannesburg Observatory has been responsible for the official time of South Africa since 1908. However the pendulum clocks then in use could not be relied on to provide an accuracy better than about 1/10 second, which was of the same order as that of the astronomical observations. It is doubtful if much use was made of even this limited accuracy outside the two observatories, and although there may – occasionally have been a demand for more accurate time, it was certainly not voiced.

Emergency Physicians Performing Point-of-Care Lung Sonography to Diagnose Pneumonia: A Prospective Multicenter Study

2021 ◽  
pp. 875647932098324
Author(s):  
Mohammad Amin Zare ◽  
Mahtab Mizani ◽  
Azadeh Sameti ◽  
Alireza Bahmani ◽  
Marzieh Fathi
Keyword(s):  
Multicenter Study ◽  
Predictive Value ◽  
Point Of Care ◽  
Signs And Symptoms ◽  
Clinical Syndrome ◽  
Emergency Physicians ◽  
Prospective Multicenter Study ◽  
Lung Sonography ◽  
Ed Visits ◽  
Limited Accuracy

Objective: There has always been some issues in the accurate diagnosis of pneumonia, a common cause of emergency department (ED) visits and revisits, which is typically made based on the patient’s clinical syndrome. This is made more difficult due to the traditional chest radiography having limited accuracy. This prospective multicenter study was conducted to determine the diagnostic accuracy of a point-of-care lung sonography performed by emergency physicians for the diagnosis of pneumonia in an acute care setting. This was compared with chest computed tomography (CT), the diagnostic gold standard. Methods: ED patients who presented with signs and symptoms of pneumonia were eligible to enroll in the study. After enrollment, point-of-care lung sonography was performed on patients by emergency physicians who had passed a focused teaching course on lung sonographic findings of pneumonia. All enrolled patients were followed up. Patients who underwent a chest CT during their hospital admission course were finally included and analyzed. Results: Emergency physicians who performed a point-of-care lung sonography had a sensitivity of 100%, specificity of 75%, positive predictive value of 88.88%, negative predictive value of 100%, and an overall accuracy of 90% in the diagnosis of pneumonia. Conclusion: These emergency physicians could accurately diagnose pneumonia, with a point-of-care lung sonography, after completing a focused sonography course.

scholarly journals PS1-39: Diagnosis Codes for Cancer Metastasis on Medicare Claims Have Limited Accuracy and Completeness

2013 ◽  
Vol 11 (3) ◽  
pp. 131-131 ◽  
Author(s):  
N. Chawla ◽  
K. R. Yabroff ◽  
A. Mariotto ◽  
T. McNeel ◽  
D. Schrag ◽  
...  
Keyword(s):  
Cancer Metastasis ◽  
Medicare Claims ◽  
Diagnosis Codes ◽  
Limited Accuracy

A Comprehensive Review of Recent Advances in the Estimation of Natural Gas Compressibility Factor

2021 ◽  
Author(s):  
Oluwasegun Cornelious Omobolanle ◽  
Oluwatoyin Olakunle Akinsete
Keyword(s):  
Artificial Intelligence ◽  
Equation Of State ◽  
Compressibility Factor ◽  
Operating Conditions ◽  
Measurement Equation ◽  
Comprehensive Review ◽  
Holistic Understanding ◽  
Deviation Factor ◽  
Gas Compressibility ◽  
Limited Accuracy

Abstract Accurate prediction of gas compressibility factor is essential for the evaluation of gas reserves, custody transfer and design of surface equipment. Gas compressibility factor (Z) also known as gas deviation factor can be evaluated by experimental measurement, equation of state and empirical correlation. However, these methods have been known to be expensive, complex and of limited accuracy owing to the varying operating conditions and the presence of non-hydrocarbon components in the gas stream. Recently, newer correlations with extensive application over wider range of operating conditions and crude mixtures have been developed. Also, artificial intelligence is now being deployed in the evaluation of gas compressibility factor. There is therefore a need for a holistic understanding of gas compressibility factor vis-a-vis the cause-effect relations of deviation. This paper presents a critical review of current understanding and recent efforts in the estimation of gas deviation factor.

scholarly journals Gaia DR2 proper motions of dwarf galaxies within 420 kpc

2018 ◽  
Vol 619 ◽  
pp. A103 ◽  
Author(s):  
T. K. Fritz ◽  
G. Battaglia ◽  
M. S. Pawlowski ◽  
N. Kallivayalil ◽  
R. van der Marel ◽  
...  
Keyword(s):  
Milky Way ◽  
Dwarf Galaxies ◽  
High Mass ◽  
Proper Motions ◽  
Proper Understanding ◽  
Satellite Problem ◽  
Cosmological Context ◽  
Good Consistency ◽  
Gaia Dr2 ◽  
Limited Accuracy

A proper understanding of the Milky Way (MW) dwarf galaxies in a cosmological context requires knowledge of their 3D velocities and orbits. However, proper motion (PM) measurements have generally been of limited accuracy and are available only for more massive dwarfs. We therefore present a new study of the kinematics of the MW dwarf galaxies. We use the Gaia DR2 for those dwarfs that have been spectroscopically observed in the literature. We derive systemic PMs for 39 galaxies and galaxy candidates out to 420 kpc, and generally find good consistency for the subset with measurements available from other studies. We derive the implied Galactocentric velocities, and calculate orbits in canonical MW halo potentials of low (0.8 × 1012 M⊙) and high mass (1.6 × 1012 M⊙). Comparison of the distributions of orbital apocenters and 3D velocities to the halo virial radius and escape velocity, respectively, suggests that the satellite kinematics are best explained in the high-mass halo. Tuc III, Crater II, and additional candidates have orbital pericenters small enough to imply significant tidal influences. Relevant to the missing satellite problem, the fact that fewer galaxies are observed to be near apocenter than near pericenter implies that there must be a population of distant dwarf galaxies yet to be discovered. Of the 39 dwarfs: 12 have orbital poles that do not align with the MW plane of satellites (given reasonable assumptions about its intrinsic thickness); 10 have insufficient PM accuracy to establish whether they align; and 17 satellites align, of which 11 are co-orbiting and (somewhat surprisingly, in view of prior knowledge) 6 are counter-orbiting. Group infall might have contributed to this, but no definitive association is found for the members of the Crater-Leo group.

scholarly journals Visual word recognition: evidence for a serial bottleneck in lexical access

2019 ◽  
Author(s):  
Alex L. White ◽  
Geoffrey M. Boynton ◽  
John Palmer
Keyword(s):  
Lexical Access ◽  
Visual Processing ◽  
Semantic Processing ◽  
The Other ◽  
Focused Attention ◽  
Capacity Limits ◽  
Semantic Categorization ◽  
Serial Processing ◽  
Trial Stimulus ◽  
Limited Accuracy

Reading is a demanding task, constrained by inherent processing capacity limits. Do those capacity limits allow for multiple words to be recognized in parallel? In a recent study, we measured semantic categorization accuracy for nouns presented in pairs. The words were replaced by post-masks after an interval that was set to each subject’s threshold, such that with focused attention they could categorize one word with ~80% accuracy. When subjects tried to divide attention between both words, their accuracy was so impaired that it supported a serial processing model: on each trial, subjects could categorize one word but had to guess about the other (White, Palmer & Boynton, 2018). In the experiments reported here, we investigated how our previous result generalizes across two tasks that require lexical access but vary in the depth of semantic processing (semantic categorization and lexical decision), and across different masking stimuli, word lengths, lexical frequencies and visual field positions. In all cases, the serial processing model was supported by two effects: (1) a sufficiently large accuracy deficit with divided compared to focused attention; and (2) a trial-by-trial stimulus processing tradeoff, meaning that the response to one word was more likely to be correct if the response to the other was incorrect. However, when the task was to detect colored letters, neither of those effects occurred, even though the post-masks limited accuracy in the same way. Altogether, the results are consistent with the hypothesis that visual processing of words is parallel but lexical access is serial.

scholarly journals Evaluation of preserving the viability of sheep's teeth PDL cells according to the different times and storage medias

2019 ◽  
Author(s):  
Alireza Navabazam ◽  
Sina Ghanean ◽  
Mohammad Hosein Amirzade Iranaq ◽  
Hosein Ghasempoor
Keyword(s):  
Incubation Time ◽  
Positive Control ◽  
Negative Control ◽  
Control Group ◽  
Trypan Blue Exclusion ◽  
Traumatic Injuries ◽  
Storage Media ◽  
Pdl Cells ◽  
Cellular Suspension ◽  
And Storage

Introdution: Vitality of periodontal ligament (PDL) cells is very critical for replantation of complete avulsion teeth due to traumatic injuries. This is important for transferring an avulsed tooth to clinic for replantation that which Medias used for storage.This study aimed to compare the vitality of PDL cells of sheep teeth cultured in different storage medias including α-Minimum Essential Medium (αMEM), Dulbecco’s Modified Eagle’s Medium (DMEM), Hank’s Balanced Salt Solution (HBSS), and mint extract Methods: In this lab trial study, PDL cells were obtained from 124 healthy anterior and posterior sheep teeth and cultured in αMEM, DMEM, HBSS, and mint extract for periods of  2, 6, 24, 48, 72, or 96 hours (24 groups). For each solution, positive control group were PDL cells without incubation in any storage media. For each group, there was a negative control considered cells growing in dry plate with no medium. After exposure of PDL cells to scheduled solution for scheduled incubation time, centrifuge was performed for 10 minutes at rate of 2000G. Then cell percipitates were added into the solution of collagenase (3mgr/ml) and Dispase (4mgr/ml to cell precipitates, which were incubated at 37° C for 60 minutes. After washing cellular suspension in PBS, vitality of the cells was assessed by Trypan blue exclusion, on a neobar slide by magnification of 200X. The data were analyzed statistically using 2-way ANOVA test by SPSS version 15. Results: Statistically significant differences in efficacy of different medias were obtained at least between two media (P=0.0001). PDL cells cultured in αMEM and mint extract showed 90% and 52.22% vitality representing, respectively, the best and the weakest storage media. Conclusion: αMEM can be a suitable transport medium up to 96 hours to preserve the vitality of the PDL cells of avulsed teeth. There is a reverse correlation between the viability of PDL cells and incubation time, increasing the time decreases the viability.

Limited accuracy of vaginal probe ultrasound in measuring residual urine volumes

1993 ◽  
Vol 4 (3) ◽  
pp. 138-140 ◽  
Author(s):  
K. R. Baker ◽  
H. P. Drutz ◽  
M. -C. Lemieux
Keyword(s):  
Residual Urine ◽  
Vaginal Probe ◽  
Limited Accuracy
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