scholarly journals CP3 Stars in Open Clusters

1993 ◽  
Vol 138 ◽  
pp. 639-643
Author(s):  
H. Schneider
Keyword(s):  
Rotational Velocity ◽  
Open Clusters ◽  
Age Dependence ◽  
Open Clusters And Associations ◽  
Peculiar Stars ◽  
The Mean ◽  
Mean Time ◽  
Larger Sample

AbstractAbt published in 1979 frequencies of peculiar stars in open clusters based on published classifications for 661 stars in 14 open clusters and associations. Among others he discussed an age dependence of the frequencies of CP3 stars and found them increasing with age. Furthermore, he suggested a possible age dependence of the rotational velocity of these stars.But the sample he used was rather small: he found eight CP3 stars in 5 open clusters. In the mean time the number of cluster CP3 stars was more than double. Therefore, the findings of Abt shall be examined on the basis of the larger sample.

scholarly journals The Occurrence of Peculiar Stars in Open Clusters

1978 ◽  
Vol 80 ◽  
pp. 155-156
Author(s):  
Helmut A. Abt ◽  
Hugo Levato
Keyword(s):  
Open Clusters ◽  
Orion Nebula ◽  
Open Clusters And Associations ◽  
System A ◽  
Peculiar Stars

We have classified on the MK system a total of 455 stars in 12 open clusters and associations. The classification is based on wide (1.2 mm) spectra of two reciprocal dispersions (39, 128 Å mm−1) obtained with the Kitt Peak 2.1 m and 90 cm reflectors, respectively. The higher dispersion is necessary to show the subtle peculiarities found in some stars. The clusters are the Orion Nebula cluster, Orion OB1 association, Lacerta OB1 association, IC 2602, IC 4665, Pleiades, M39, M34, NGC 2516, NGC 6633, NGC 6475, and Coma; two of these were done with Morgan.

scholarly journals Investigations of the Magnetic Fields of Chemically Peculiar Stars of Different Age

1986 ◽  
Vol 90 ◽  
pp. 29-32
Author(s):  
Yu.V. Glagolevskij ◽  
V.G. Klochkova ◽  
I.M. Kopylov
Keyword(s):  
Magnetic Fields ◽  
Open Clusters ◽  
Special Astrophysical Observatory ◽  
Open Clusters And Associations ◽  
Origin And Evolution ◽  
Chemically Peculiar ◽  
Peculiar Stars ◽  
Chemically Peculiar Stars ◽  
Stellar Magnetic Fields

The program of comprehensive investigations of stellar magnetism in the Special Astrophysical Observatory of the USSR AS includes the study of origin and evolution of the stellar magnetic fields in open clusters and associations of different age. In the papers by Borra (1981), Brown et al. (1981) and North and Cramer (1984) have been found some indications on the evolutionary decay of the fossil stellar fields.

scholarly journals Blood ordering and transfusion practice in routine operation theatres of BPKIHS: a pilot study

2012 ◽  
Vol 10 (2) ◽  
pp. 137-138
Author(s):  
R K Chaudhary ◽  
R K Singh ◽  
K Pokharel ◽  
B Bhattarai
Keyword(s):  
Blood Loss ◽  
Service System ◽  
Elective Surgery ◽  
Time Lag ◽  
Transfusion Practice ◽  
Time Interval ◽  
Hospital Resources ◽  
The Mean ◽  
Mean Time ◽  
Larger Sample

Background: The practice of blood ordering before surgery is usually excessive. Hazards of over ordering include burden to blood banking, outdating of blood, unnecessary wastage of hospital resources, mental and physical stress to patient party. A study on blood ordering practice provides important feedback for improvement of blood ordering service system and developing Maximum Surgical Blood Ordering Schedule (MSBOS). Objectives: To find out the ratio between cross-matched and transfused blood units (C:T ratio) in routine operation theatres (OT) of BP Koirala Institute of Health Sciences (BPKIHS) and the time lag between blood demand and arrival in the OTs. Methods: Data of 94 patients undergoing elective surgery with potential need for blood transfusion over the period of one month were collected and analyzed prospectively. The variables noted include age, gender, body weight, blood group, hemoglobin level, diagnosis, type of surgery, maximum allowable blood loss, actual blood loss; number of blood units cross-matched and actually transfused. Results: Altogether, 161 blood units were cross matched and only 24 of them were transfused making the C:T ratio of 6.7:1. Fourteen out of 24 units were transfused only in gynecological & obstetrical patients. The mean time interval between the demand and the arrival of blood units was 10 ± 7.6 minutes. Conclusion: The overall C:T ratio in the routine OT of BPKIHS is comparatively high. Further study with larger sample size is needed for recommending MSBOS.DOI: http://dx.doi.org/10.3126/hren.v10i2.6583 Health Renaissance 2012; Vol 10 (No.2); 137-138 

scholarly journals Spectral Morphology in Southern open Clusters and Associations at La Plata Observatory

1979 ◽  
Vol 47 ◽  
pp. 99-100
Author(s):  
H. Levato ◽  
S. Malaroda
Keyword(s):  
Open Clusters ◽  
Spectral Classification ◽  
Open Clusters And Associations ◽  
La Plata ◽  
Peculiar Stars

AbstractOur purpose is to describe the program on spectral classification of members of open clusters and associations started in January 1977 at La Plata Observatory. The program is essentially a continuation of the Abt and Levato studies made from Kitt Peak so, many details of it have been already described in Dr. Abt’s paper in this volume. We have a list of 40 clusters and associations included in the program which consists in obtaining two sets of spectra in two dispersions, 39 Å/mm and 125 Vmm, both sets 1.2 wide. These spectra, as has already been mentioned, are very useful for deriving accurate MK types and for discovering peculiar stars.

scholarly journals EP.FRI.700 NCEPOD Acute Bowel Obstruction Report 2019:  A pilot study for review of quality of care provided to patients with acute bowel obstruction in a Surgical Emergency Unit

2021 ◽  
Vol 108 (Supplement_7) ◽  
Author(s):  
Abhishek Dey ◽  
Antons Rudzats ◽  
Jeffrey Gilmour
Keyword(s):  
Bowel Obstruction ◽  
Retrospective Case ◽  
X Ray ◽  
Surgical Emergencies ◽  
The Mean ◽  
Pathway Of Care ◽  
In Transit ◽  
Mean Time ◽  
Larger Sample

Abstract Aims Acute bowel obstruction is one of the commonest surgical emergencies posing various diagnostic and therapeutic challenges. A review of care titled ‘Delay in Transit’ by NCEPOD delineated inadequacies in the pathway of care for patients with acute bowel obstruction nationwide, highlighting areas of improvement. This audit aims to assess key elements of management pathway in our centre and compare it to national statistics.  Methods A retrospective case note analysis was conducted for 24 randomly selected patients, aged above 15 years, admitted with a clinical diagnosis of acute bowel obstruction between December, 2018-December, 2019. Results Summary of some of NCEPOD recommendations, national and local performance The mean time to diagnosis was 8.5±6.6 hours, which was delayed if abdominal X-ray preceded the CT. Poor consultant review times may reflect failure to capture on records. Conclusion The management pathway, although faring well in some criteria, has scope for further improvement. Plans for an audit with a larger sample size will be implemented along with an enhanced pathway.

scholarly journals Risk Assessment for Preterm Delivery using the Fetal Fibronectin Test Associated with the Measurement of Uterine Cervix Length in Symptomatic Pregnant Women

2018 ◽  
Vol 40 (09) ◽  
pp. 507-512
Author(s):  
Tadeu Pinheiro Filho ◽  
Vanessa Pessoa ◽  
Thaisa Lima ◽  
Marcela Castro ◽  
José Linhares
Keyword(s):  
Pregnant Women ◽  
Preterm Delivery ◽  
Uterine Cervix ◽  
Rapid Test ◽  
Maternity Hospital ◽  
Fetal Fibronectin ◽  
Delivery Date ◽  
The Mean ◽  
Mean Time ◽  
Larger Sample

Objective To analyze the use of the measurement of uterine cervix length (MUCL) and the fetal fibronectin (fFN) rapid test as predictors of preterm delivery (PTD) in symptomatic pregnant women assisted at the Santa Casa de Misericórdia de Sobral Maternity Hospital. Methods This was a prospective and analytic study involving 53 parturients assisted between September of 2015 and July of 2016; the participants were between 24 and 34 weeks of gestational age (GA) and presented complaints related to preterm labor (PTL) prodromes. Vaginal secretion was collected for fFN testing, and the MUCL was obtained via transvaginal ultrasonography. Results A total of 58.49% of the subjects showed MUCL < 25 mm, and 41.51% were positive in the fFN rapid test. A total of 48 patients were followed-up until their delivery date, and 54.17% resulted in PTL. The relative risk (RR) for PTD in patients with MUCL < 25 mm was 1.83 (p = 0.09, 0.99–3.36, 95% confidence interval [CI]), with a mean time before delivery of 2.98 weeks. Based on fFN positive results, the RR was 3.50 (p = 0.002, 1.39–8.79, 95%CI) and the mean time until delivery was 1.94 weeks. The RR was 2.70 (p = 0.002, 1.08–6.72, 95%CI) when both tests were used. The RR of PTD within 48 hours, and 7 and 14 days were, respectively, 1.30 (p = 0.11, 95% CI 1.02–1.67), 1.43 (p = 0.12, 95% CI % 0.99–2.06), and 2.03 (p = 0.008, 95% CI 1.26–3.27), when based on the MUCL, and 1.75 (p = 0.0006, 95% CI 1.20–2.53), 2.88 (p = 0.0001, 95% CI, 1.57–5.31), and 3.57 (p = 0.0002, 95% CI 1.63–7.81) when based on positive fFN results. The RR at 48 hours and 7 and 14 days considering both tests was 1.74 (p = 0.0001, 95% CI 1.14–2.64), 2.22 (p = 0.0001, 95% CI 1.22–4.04), and 2.76 (p = 0.0002, 95% CI 1.27–5.96), respectively. Conclusion In symptomatic pregnant women, we concluded that the MUCL < 25 mm associated with positive fFN rapid test indicate increased the risk for PTD. Further studies with larger sample sizes could contribute in supporting the results presented in the current study.

Predicting Daily Maintenance Dose of Fluindione, an Oral Anticoagulant Drug

1996 ◽  
Vol 75 (05) ◽  
pp. 731-733 ◽  
Author(s):  
V Cazaux ◽  
B Gauthier ◽  
A Elias ◽  
D Lefebvre ◽  
J Tredez ◽  
...  
Keyword(s):  
Effective Dose ◽  
Maintenance Dose ◽  
Successive Approximations ◽  
Hemorrhagic Complication ◽  
Simple Method ◽  
Individual Variations ◽  
Anticoagulant Drug ◽  
The Mean ◽  
Mean Time ◽  
Daily Maintenance Dose

SummaryDue to large inter-individual variations, the dose of vitamin K antagonist required to target the desired hypocoagulability is hardly predictible for a given patient, and the time needed to reach therapeutic equilibrium may be excessively long. This work reports on a simple method for predicting the daily maintenance dose of fluindione after the third intake. In a first step, 37 patients were delivered 20 mg of fluindione once a day, at 6 p.m. for 3 consecutive days. On the morning of the 4th day an INR was performed. During the following days the dose was adjusted to target an INR between 2 and 3. There was a good correlation (r = 0.83, p<0.001) between the INR performed on the morning of day 4 and the daily maintenance dose determined later by successive approximations. This allowed us to write a decisional algorithm to predict the effective maintenance dose of fluindione from the INR performed on day 4. The usefulness and the safety of this approach was tested in a second prospective study on 46 patients receiving fluindione according to the same initial scheme. The predicted dose was compared to the effective dose soon after having reached the equilibrium, then 30 and 90 days after. To within 5 mg (one quarter of a tablet), the predicted dose was the effective dose in 98%, 86% and 81% of the patients at the 3 times respectively. The mean time needed to reach the therapeutic equilibrium was reduced from 13 days in the first study to 6 days in the second study. No hemorrhagic complication occurred. Thus the strategy formerly developed to predict the daily maintenance dose of warfarin from the prothrombin time ratio or the thrombotest performed 3 days after starting the treatment may also be applied to fluindione and the INR measurement.

Retrospective analysis of mortality within 30 days of systemic anticancer therapy and comparison with a previous audit at an Australian Regional Cancer Centre

2021 ◽  
pp. 107815522110160
Author(s):  
Bernadatte Zimbwa ◽  
Peter J Gilbar ◽  
Mark R Davis ◽  
Srinivas Kondalsamy-Chennakesavan
Keyword(s):  
Checkpoint Inhibitors ◽  
Anticancer Therapy ◽  
Mortality Rates ◽  
Feedback Process ◽  
Time To Death ◽  
Cancer Centre ◽  
Haematology Patients ◽  
The Mean ◽  
Regional Cancer Centre ◽  
Mean Time

Purpose To retrospectively determine the rate of death occurring within 14 and 30 days of systemic anticancer therapy (SACT), compare this against a previous audit and benchmark results against other cancer centres. Secondly, to determine if the introduction of immune checkpoint inhibitors (ICI), not available at the time of the initial audit, impacted mortality rates. Method All adult solid tumour and haematology patients receiving SACT at an Australian Regional Cancer Centre (RCC) between January 2016 and July 2020 were included. Results Over a 55-month period, 1709 patients received SACT. Patients dying within 14 and 30 days of SACT were 3.3% and 7.0% respectively and is slightly higher than our previous study which was 1.89% and 5.6%. Mean time to death was 15.5 days. Males accounted for 63.9% of patients and the mean age was 66.8 years. 46.2% of the 119 patients dying in the 30 days post SACT started a new line of treatment during that time. Of 98 patients receiving ICI, 22.5% died within 30 days of commencement. Disease progression was the most common cause of death (79%). The most common place of death was the RCC (38.7%). Conclusion The rate of death observed in our re-audit compares favourably with our previous audit and is still at the lower end of that seen in published studies in Australia and internationally. Cases of patients dying within 30 days of SACT should be regularly reviewed to maintain awareness of this benchmark of quality assurance and provide a feedback process for clinicians.

Vitamin D Level Stability in Dystrophinopathy Patients on Vitamin D Supplementation

2021 ◽  
pp. 1-7
Author(s):  
Naomi Vather-Wu ◽  
Matthew D. Krasowski ◽  
Katherine D. Mathews ◽  
Amal Shibli-Rahhal
Keyword(s):  
Vitamin D ◽  
Retrospective Cohort ◽  
Vitamin D Supplementation ◽  
Hydroxyvitamin D ◽  
Frequent Monitoring ◽  
25 Hydroxyvitamin D ◽  
The Mean ◽  
Stable Maintenance ◽  
Mean Time

Background: Expert guidelines recommend annual monitoring of 25-hydroxyvitamin D (25-OHD) and maintaining 25-OHD ≥30 ng/ml in patients with dystrophinopathies. Objective: We hypothesized that 25-OHD remains stable and requires less frequent monitoring in patients taking stable maintenance doses of vitamin D. Methods: We performed a retrospective cohort study, using the electronic health record to identify 26 patients with dystrophinopathies with a baseline 25-OHD ≥30 ng/mL and at least one additional 25-OHD measurement. These patients had received a stable dose of vitamin D for ≥3 months prior to their baseline 25-OHD measurement and throughout follow-up. The main outcome measured was the mean duration time the subjects spent with a 25-OHD ≥30 ng/mL. Results: Only 19% of patients dropped their 25-OHD to <  30 ng/ml, with a mean time to drop of 33 months and a median nadir 25-OHD of 28 ng/mL. Conclusions: These results suggest that measurement of 25-OHD every 2–2.5 years may be sufficient in patients with a baseline 25-OHD ≥30 ng/mL and who are on a stable maintenance dose of vitamin D. Other patients may require more frequent assessments.

scholarly journals Surveillance System in Smart Cities: A Dependability Evaluation Based on Stochastic Models

Electronics ◽  
2021 ◽  
Vol 10 (8) ◽  
pp. 876
Author(s):  
Igor Gonçalves ◽  
Laécio Rodrigues ◽  
Francisco Airton Silva ◽  
Tuan Anh Nguyen ◽  
Dugki Min ◽  
...  
Keyword(s):  
Surveillance System ◽  
Smart Cities ◽  
Heterogeneous Data ◽  
Time To Failure ◽  
Video Streams ◽  
Dependability Evaluation ◽  
The Mean ◽  
Mean Time ◽  
The Internet Of Things

Surveillance monitoring systems are highly necessary, aiming to prevent many social problems in smart cities. The internet of things (IoT) nowadays offers a variety of technologies to capture and process massive and heterogeneous data. Due to the fact that (i) advanced analyses of video streams are performed on powerful recording devices; while (ii) surveillance monitoring services require high availability levels in the way that the service must remain connected, for example, to a connection network that offers higher speed than conventional connections; and that (iii) the trust-worthy dependability of a surveillance system depends on various factors, it is not easy to identify which components/devices in a system architecture have the most impact on the dependability for a specific surveillance system in smart cities. In this paper, we developed stochastic Petri net models for a surveillance monitoring system with regard to varying several parameters to obtain the highest dependability. Two main metrics of interest in the dependability of a surveillance system including reliability and availability were analyzed in a comprehensive manner. The analysis results show that the variation in the number of long-term evolution (LTE)-based stations contributes to a number of nines (#9s) increase in availability. The obtained results show that the variation of the mean time to failure (MTTF) of surveillance cameras exposes a high impact on the reliability of the system. The findings of this work have the potential of assisting system architects in planning more optimized systems in this field based on the proposed models.

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