Survie oeufs–juvéniles et force des classes d'âge des grands brochets (Esox lucius) de la rivière aux Pins, près de Montréal, Québec

1993 ◽  
Vol 71 (2) ◽  
pp. 368-375 ◽  
Author(s):  
Gérard Massé ◽  
Pierre Dumont ◽  
Réjean Fortin
Keyword(s):  
Survival Rate ◽  
Water Level ◽  
Survival Rates ◽  
Northern Pike ◽  
Esox Lucius ◽  
Level Control ◽  
Potential Fecundity ◽  
Spawning Grounds ◽  
Factors Influencing ◽  
Natural Situation

Exhaustive counts of northern pike that use the Rivière aux Pins and of 0+ juvenile pike produced in this river, based on trap net and seine catches, coupled with potential fecundity estimates, allowed survival rates of pike eggs to migrant 0+ juveniles to be evaluated in a natural situation, in 1975, and in a controlled water level situation, in 1976. In 1975, 3393 juveniles aged 0+ were produced from 9 210 900 eggs potentially deposited by 404 females, yielding a 0.037% survival rate. In 1976, 34 062 juveniles aged 0+ were produced from 8 536 800 eggs potentially deposited by 310 females, yielding a 0.399% survival rate. The higher survival rate in 1976 could have resulted from the water level control and (or) from the higher spring waters in 1976. However, 1975 and 1976 both produced strong year classes, suggesting that potential fecundity and 0+ juvenile production on the spawning grounds are not the only factors influencing recruitment in this species.

Factors Influencing the Lifetime of Telecommunication and Information Technology Standards

2009 ◽  
pp. 1529-1551
Author(s):  
Knut Blind
Keyword(s):  
Information Technology ◽  
Survival Rate ◽  
Technological Change ◽  
Survival Time ◽  
Survival Rates ◽  
Second Step ◽  
International Level ◽  
Technology Standards ◽  
Factors Influencing ◽  
Country Specific

This article presents the results of an explorative study for the lifetimes and survival rates of formal standards in telecommunication and information technology. The analysis reveals that the survival rate depends on the dynamic development of technologies and on country-specific characteristics. In a second step, we tried to identify factors influencing the lifetimes of standards. In general, standards replacing an already existing document have an expected survival time compared to documents without a predecessor. Standards with a successor document have, as anticipated, a shorter expected lifetime. Finally, the increased speed of technological change reduces the lifetimes of standards. Based on these first insights, we derive the following recommendations. First, standardisation bodies should adapt their standard maintenance according to the specific requirements of technologies and the related markets, but should also harmonise their processes at the international level in order to avoid frictions for the development of technologies and markets.

Period of risk for recurrence in medulloblastoma

1978 ◽  
Vol 48 (2) ◽  
pp. 159-163 ◽  
Author(s):  
Donald O. Quest ◽  
Ronald Brisman ◽  
Joao L. Antunes ◽  
Edgar M. Housepian
Keyword(s):  
Survival Rate ◽  
Older Patients ◽  
Survival Rates ◽  
Cure Rate ◽  
Content Type ◽  
Congenital Tumor ◽  
Factors Influencing ◽  
Initial Surgery ◽  
Embryonic Origin

✓ Ninety-nine patients with medulloblastoma who received surgery and radiotherapy, and had a statistically sufficient follow-up period were analyzed for factors influencing survival and the relevance of the “period of risk for recurrence” hypothesis. This postulate states that the period of risk for recurrence of a congenital tumor is equal to the age at presentation of illness plus 9 months' gestational time. The assumption is made that a tumor of embryonic origin will become manifest after a period of time determined by its inherent rate of growth and that tumor cells surviving treatment will multiply and present with recurrence in an equal period of time. Ten of 43 patients survived the period of risk, a presumed cure rate of 23%. None of these patients has subsequently developed evidence of tumor recurrence. Older patients at initial surgery had a somewhat greater survival rate for the first 5 years after treatment (10 of 26 older patients (38%) versus 15 of 54 younger patients (28%)), but by 10 years there was no appreciable difference in survival rates between those over 16 years of age and those younger. The beneficial effect of total neuraxis megavoltage radiotherapy is indicated by the improved 5-year survival rate from 9 of 41 patients (22%) to 16 of 39 patients (41%) with the newer techniques.

Factors Influencing the Lifetime of Telecommunication and Information Technology Standards

2008 ◽  
pp. 383-404 ◽  
Author(s):  
Knut Blind
Keyword(s):  
Information Technology ◽  
Survival Rate ◽  
Technological Change ◽  
Survival Time ◽  
Survival Rates ◽  
Second Step ◽  
International Level ◽  
Technology Standards ◽  
Factors Influencing ◽  
Country Specific

This article presents the results of an explorative study for the lifetimes and survival rates of formal standards in telecommunication and information technology. The analysis reveals that the survival rate depends on the dynamic development of technologies and on country-specific characteristics. In a second step, we tried to identify factors influencing the lifetimes of standards. In general, standards replacing an already existing document have an expected survival time compared to documents without a predecessor. Standards with a successor document have, as anticipated, a shorter expected lifetime. Finally, the increased speed of technological change reduces the lifetimes of standards. Based on these first insights, we derive the following recommendations. First, standardisation bodies should adapt their standard maintenance according to the specific requirements of technologies and the related markets, but should also harmonise their processes at the international level in order to avoid frictions for the development of technologies and markets.

Reproduction et force des classes d'âge du Grand Brochet (Esox lucius L.) dans le Haut-Richelieu et la baie Missisquoi

1982 ◽  
Vol 60 (2) ◽  
pp. 227-240 ◽  
Author(s):  
Réjean Fortin ◽  
Pierre Dumont ◽  
Henri Fournier ◽  
Claude Cadieux ◽  
Diane Villeneuve
Keyword(s):  
Water Temperature ◽  
Northern Pike ◽  
Esox Lucius ◽  
Water Levels ◽  
Spawning Grounds ◽  
Egg Incubation ◽  
Egg Deposition ◽  
Air Temperatures ◽  
Incubation Periods ◽  
Class Strength

Captures of northern pike on the spawning grounds and measures of egg deposition showed that from 1975 to 1978 spawning occurred in April, after the onset of spring high waters and the warming of the water above 5–6 °C. Maximal egg deposition occurs on abandoned meadows, pastures, and shrub–grass areas, in water 60 cm or less. In the Bleury Stream area, these substrates lie mostly between elevations 30 and 30,5 m. Water temperature influences the length of the spawning and incubation periods. Spawning, egg incubation, and growth of the young to a mean length of 20 mm require approximately 40 days. From 1970 to 1977, two strong year classes (1973 and 1976) were produced; they were both followed by a weak year class. Air temperatures in June, summer water levels (June–September), and also the strength of the preceding year class, had a determining effect on year class strength.

Pirarubicin (THP) therapy for elderly aggressive non-Hodgkin’s lymphoma— T-COP vs reduced CHOP, and reduced T-COP in the patients with poor physical status

2006 ◽  
Vol 24 (18_suppl) ◽  
pp. 17571-17571
Author(s):  
M. Mori ◽  
M. Oota ◽  
H. Taguchi ◽  
T. Ohno ◽  
M. Tanimoto ◽  
...  
Keyword(s):  
Survival Rate ◽  
Elderly Patients ◽  
Survival Rates ◽  
Treatment Method ◽  
Optimum Dose ◽  
Physical Status ◽  
Reduced Dose ◽  
Factors Influencing ◽  
D 74 ◽  
F 33

17571 Background: We have previously reported that T-COP using pirarubicin (THP) is useful in treatment of NHL in elderly patients. In the present study on elderly aggressive NHL, the usefulness and safety were compared between THP and ADM using the optimum dose of THP (ML1). In patients with poor physical status, reduced dose T-COP was conducted (ML2). Methods: ML1 protocol: PS 0–3 and Alb ≥ 3.0 g/dl Patients in their 70s were assigned randomly to either T-COP (A group) or CHOP (B group) receiving THP (A) or ADM (B) 40 mg/m2,CPA 650 mg/m2, VCR 1 mg/m2dayl, P 40 mg/m2dayl -5. Patients in their 80s were assigned randomly to either T-COP (C) or CHOP (D) receiving THP (C) or ADM (D) 30, CPA 400, VCR 1, P 30. ML2 protocol: PS 4 or Alb < 3.0 g/dl. Patients in their 70s (E group) received THP 26, CPA 430, VCR 1, P 40. Patients in their 80s (F group) received THP 20, CPA 260, VCR 1, P 30. Each group underwent 3 courses every 3 weeks. CR (CR+CRu) patients underwent 6 courses or more. Results: Analyzed as competent cases were 173 out of 207 patients who were registered between Aug 99 and Dec 03. The CR rates were A: 83% (39/47), B: 74% (37/50), C: 67% (14/21), D: 74% (14/19), E: 58% (7/12), F: 33% 2/6, and 78% in T-COP (A + C) and 74% in CHOP (B + D). The 5-year survival rates were A: 50%, B: 35% (p < 0.05) and C: 26% D: 55% (p < 0.05.), demonstrating that T-COP in their 70s and CHOP in their 80s were significantly higher. The 5-year survival rate in ML1 was 41%. In multivariate analysis, factors influencing the survival (p < 0.01) in ML1 were age, the primary effect and treatment method. There were no significant differences in PS, CS, LDH and lesions outside nodes. Conclusions: Patients aged 70 years or older had the CR rate at 75.9% and a 5-year survival rate at 41%, demonstrating satisfactory outcomes. The results suggested that in 70s, THP 40 mg/m2 was more effective than ADM 40 mg/m2. In their 80s, ADM30 mg/m2 was more effective than THP30 mg/m2. ML2 was feasible in elderly patients with poor physical status. No significant financial relationships to disclose.

Water Level Control of Small-scale Hydroelectric Power Plant

2002 ◽  
Vol 122 (6) ◽  
pp. 989-994
Author(s):  
Shinichiro Endo ◽  
Masami Konishi ◽  
Hirosuke Imabayashi ◽  
Hayami Sugiyama
Keyword(s):  
Power Plant ◽  
Water Level ◽  
Hydroelectric Power Plant ◽  
Small Scale ◽  
Hydroelectric Power ◽  
Level Control

Study on Prediction Model of Karstic Large Spring Water Level Dynamic Coupling Multiple Factors in Jinan

2015 ◽  
Vol 8 (1) ◽  
pp. 309-317 ◽  
Author(s):  
Xing Liting ◽  
Zhou Juan ◽  
Zhang Fengjuan ◽  
Wang Song ◽  
Dou Tongwen ◽  
...  
Keyword(s):  
Prediction Model ◽  
Water Level ◽  
Spring Water ◽  
Anthropogenic Factors ◽  
Karst Water ◽  
Multiple Factors ◽  
Factors Influencing ◽  
Heterogeneous Features ◽  
Dry Seasons ◽  
Natural Decay

In karst regions, due to the heterogeneous features of karst medium, the characteristics of the groundwater flow turn to be of high complexity. Researchers have been seeking proper forecasting methods for karst water dynamic for many years. This paper, taking the spring in Jinan as an example, using regression analysis, analyzed the factors influencing spring water dynamic, and quantitatively evaluated the influencing coefficients of spring water level concerning rainfall, exploitation and recharge as well as the natural decay coefficient of spring water in dry seasons. The prediction model coupling multiple factors was built by investigating natural and anthropogenic factors influencing groundwater level, which could be used for forecasting dynamic of spring water in Jinan. The calculated value of model was highly coincided with the observed value. In consideration of the characteristics of uneven precipitation in Jinan, the suitable zones and volume of artificial recharge were investigated finally, which could help to sustain the spewing of Jinan springs significantly.

Incidence of Uterine Torsion and Related Factors in Buffaloes of Amul Milk Shed Area

2019 ◽  
Vol 15 (01) ◽  
pp. 17-20
Author(s):  
Chintan S Pateliya1 ◽  
J A Patel ◽  
A J Dhami ◽  
S B Patel ◽  
H L Makwana
Keyword(s):  
Retrospective Study ◽  
Survival Rate ◽  
Caesarean Section ◽  
Post Treatment ◽  
Full Term ◽  
Related Factors ◽  
Factors Influencing ◽  
Uterine Torsion

A study was carried out to find out the retrospective incidence of uterine torsion in buffaloes among obstetrical cases in Amul milk shed area and factors influencing it. Data on 1,13,772 obstetrical cases attended from January 2017 to June 2018 by Amul Veterinarians were collected. Moreover, 50 buffaloes suffering from uterine torsion were taken up during July-December, 2018 to know the side, site, degree of uterine torsion, parity as well as sex and viability of the calf and the dam after detorsion/Caesarean section in the same area. In the retrospective study, a total of 2000 cases of uterine torsion were recorded among total 1,13,772 bovine obstetrical cases, which encompassed 1.76%. Of the 2000 cases, 92.20 (1844) percent torsions were found in buffaloes only. Among 57,111 obstetrical cases attended in buffaloes, the incidence of uterine torsion was 3.23%. Moreover, the region/center-wise incidence of torsion cases varied from 1.30–19.36%. The highest incidence of uterine torsion was found in Anand region (19.36 %) followed by Kathlal (11.23 %) and Mahemdabad (10.14 %) regions, while the lowest incidence was in Virpur (2.06%), Petlad (1.46%) and Piplata (1.30%). It was concluded that buffaloes mostly experience right side (100%), post-cervical (82%) uterine torsion of 270–360° (66%), at full term of gestation (70%)with lower survivability of the calves (30%), however, the survival rate of the dams post-treatment was 90%.

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