scholarly journals Analysis of the effect deformations of individual components of gearbox on hers total lifetime

2018 ◽  
Vol 393 ◽  
pp. 012061
Author(s):  
S Gramblička ◽  
R Kohár ◽  
R Madaj ◽  
M Vrabec
Keyword(s):  
Total Lifetime

Total Lifetime Costs of Injuries

2006 ◽  
pp. 124-159 ◽  
Author(s):  
Eric A. Finkelstein ◽  
Phaedra S. Corso ◽  
Ted R. Miller
Keyword(s):  
Total Lifetime ◽  
Lifetime Costs

scholarly journals Echocardiographic abnormalities in non-moderate drinking of alcohol for prolonged duration

1970 ◽  
Vol 6 (1) ◽  
pp. 18-28
Author(s):  
MP Gautam ◽  
U Ghimire Gautam ◽  
S Dwivedi ◽  
S Rijal
Keyword(s):  
Ejection Fraction ◽  
Left Ventricular Mass ◽  
Left Ventricular Mass Index ◽  
Systolic Dysfunction ◽  
Left Ventricular ◽  
Left Ventricular Ejection ◽  
Moderate Drinking ◽  
Ventricular Mass Index ◽  
Total Lifetime ◽  
Ventricular Mass

Background: Alcohol drinking is cardio-protective; however its beneficial and harmful effects depend on the amount consumed. This work is designed to assess the impact of prolonged non-moderate drinking in left ventricular mass index and left ventricular ejection fraction and the correlation of their severity with total lifetime intake amount. Materials and methods: Fifty non-moderate drinkers (>25 g/day) for last 10 years and 50 non-drinker-volunteers were selected. Detail echocardiographic assessment was done and findings were compared and severity was correlated with lifetime amount. Results: Mean daily intake, duration and lifetime intake amount of alcohol were 64.1 g, 21.9 years and 501.9 Kg respectively. The mean ejection fraction and left ventricular mass index were 47.2% and 105.3 g/m2. There was significant difference when compared with controls. Eighty-two percent drinking subjects had abnormal echo, most common were regurgitations (52%), diastolic dysfunction (46%), raised ventricular mass (44%), systolic dysfunction (40%), and dilated left atrium and ventricle (38%). Thirty-four percent of subjects had echo features consistent with dilated cardiomyopathy. Palpitation and dyspnea in combination were the only symptoms associated with severity of echo changes. There was strong negative correlation of lifetime intake amount with ejection fraction (r = -0.91, p<0.001); however its relationship with ventricular mass index was not statistically significant (r = 0.23, p>0.05). Conclusions: Prolonged non-moderate drinking causes significant echocardiographic abnormalities mainly systolic dysfunction and increased left ventricular mass index. The total lifetime and daily amount of alcohol are well correlated with systolic dysfunction; however their relationships with the left ventricular mass index were non-conclusive. Key words: Alcohol; left ventricular mass; cardiomyopathy DOI: 10.3126/jcmsn.v6i1.3598 Journal of College of Medical Sciences-Nepal, 2010, Vol. 6, No. 1, 18-28

scholarly journals Lifetime alcohol consumption and breast cancer: a case–control study in Finland

2000 ◽  
Vol 3 (1) ◽  
pp. 11-18 ◽  
Author(s):  
Satu Männistö ◽  
Mikko Virtanen ◽  
Vesa Kataja ◽  
Matti Uusitupa ◽  
Pirjo Pietinen
Keyword(s):  
Breast Cancer ◽  
Alcohol Consumption ◽  
Postmenopausal Women ◽  
Case Control Study ◽  
Premenopausal Women ◽  
Case Control ◽  
Total Lifetime ◽  
Increased Risk ◽  
Control Study ◽  
Current Alcohol

AbstractObjectiveTo study the association between lifetime alcohol consumption and the risk of breast cancer.Design and settingA case–control study carried out in eastern Finland. Information about alcohol consumption was obtained by two methods: a self-administered food frequency questionnaire (FFQ) including alcohol consumption during the previous 12 months, and a lifetime alcohol consumption questionnaire (AQ) which was administered by the study nurse.SubjectsThe study consisted of 301 breast cancer cases (25–75 years old) and 443 population controls.ResultsThe subjects reported higher current alcohol consumption in the AQ compared to the FFQ. According to the AQ, premenopausal cases consumed on average 28 g and controls 24 g alcohol week−1; in postmenopausal women the values were 15 and 14 g, respectively. About 30% of premenopausal and 60% of postmenopausal women were classified as non-drinkers. The correlation for current alcohol consumption between the FFQ and the AQ was 0.80 in premenopausal women but only 0.40 in postmenopausal women. Current alcohol consumption seemed to influence the reporting of total lifetime alcohol consumption. Current alcohol consumption was not associated with the risk of breast cancer either in premenopausal or postmenopausal women; neither were associations found between alcohol consumption at age of first use, use before the age of 30, or total lifetime alcohol consumption and the risk of breast cancer.ConclusionsOn average, one to three drinks per week did not increase the risk of breast cancer in this study. Consumption levels were, however, too low to exclude increased risk with high regular consumption. Further research is necessary on lifetime alcohol consumption.

Physiological cost of maternal care? Effect of pre- and post-hatching care on the clutch size in the earwig Anisolabis maritima

Behaviour ◽  
2014 ◽  
Vol 151 (4) ◽  
pp. 455-464 ◽  
Author(s):  
Seizi Suzuki
Keyword(s):  
Parental Care ◽  
Maternal Care ◽  
Lifetime Fecundity ◽  
Total Lifetime ◽  
Physiological Cost ◽  
Multiple Components ◽  
Trade Offs ◽  
First Clutch ◽  
The Cost ◽  
Time Point

There may be a trade-off between parental care and future reproductive success. Parental care usually consists of multiple components, and quantifying the cost of each component is necessary to assess the exact costs of parental care. In this study, I examined the trade-offs associated with maternal care in the earwig Anisolabis maritima (Dermaptera: Anisolabididae). I evaluated how many clutches A. maritima can produce and how the number and size of the clutch are affected by maternal care, distinguishing the cost of each component. The interval from the time point at which the mothers were removed from their eggs or young to produce the next clutch differed with treatment, and a significant interaction was observed between the effects of clutch order and presence of care on the size of the next clutch when the first clutch was removed immediately. However, longevity and total lifetime fecundity were not different in the presence or absence of care. This showed that females which were removed from a clutch produced the second or later clutches more rapidly although the clutch sizes were smaller. Because the total lifetime fecundity did not differ, irrespective of the presence or absence of care, it is possible that the costs of such care in A. maritima have a small effect.

scholarly journals The long-term effects of space weather on satellite operations

2010 ◽  
Vol 28 (6) ◽  
pp. 1361-1367 ◽  
Author(s):  
D. T. Welling
Keyword(s):  
Background Radiation ◽  
High Energy ◽  
High Energy Particle ◽  
Solar Cycles ◽  
Long Term Effects ◽  
Radiation Background ◽  
Particle Exposure ◽  
Total Lifetime ◽  
The Impact

Abstract. Integrated lifetime radiation damage may cause spacecraft to become more susceptible to operational anomalies by changing material characteristics of electronic components. This study demonstrates and quantifies the impact of these effects by examining the National Oceanic and Atmospheric Administration (NOAA) National Geophysical Data Center (NGDC) satellite anomaly database. Energetic particle data from the Geostationary Operational Environmental Satellites (GOES) is used to construct the total lifetime particle exposure a satellite has received at the epoch of an anomaly. These values are compared to the satellite's chronological age and the average exposure per year (calculated over two solar cycles.) The results show that many anomalies occur on satellites that have received a total lifetime high-energy particle exposure that is disproportionate to their age. In particular, 10.8% of all events occurred on satellites that received over two times more 20 to 40 MeV proton lifetime particle exposure than predicted using an average annual mean. This number inflates to 35.2% for 40 to 80 MeV protons and 33.7% for ≥2 MeV electrons. Overall, 73.5% of all anomalies occurred on a spacecraft that had experienced greater than two times the expected particle exposure for one of the eight particle populations used in this study. Simplistically, this means that the long term radiation background exposure matters, and that if the background radiation is elevated during the satellite's lifetime, the satellite is likely to experience more anomalies than satellites that have not been exposed to the elevated environment.

EFFECT OF THE SINGED LOCUS ON THE EGG PRODUCTION CURVE OF DROSOPHILA MELANOGASTER

1981 ◽  
Vol 23 (2) ◽  
pp. 327-336 ◽  
Author(s):  
Gonzalo Alvarez ◽  
Antonio Fontdevila
Keyword(s):  
Experimental Data ◽  
Drosophila Melanogaster ◽  
Theoretical Model ◽  
Egg Production ◽  
Egg Laying ◽  
Wild Type ◽  
Clear Effect ◽  
Total Lifetime ◽  
Female Genotype ◽  
Production Curve

Egg production curves of virgin and mated females of several genotypes at the singed locus of Drosophila melanogaster have been studied. Fitz-Earle's theoretical model (1971) for characterizing daily egg production has been used. In general, the model gave good fit to the experimental data. A clear effect of the female genotype is detected on the following parameters and derivations of the model: α, rate of decrease in egg production; tq, day of cessation of egg-laying, N(tmax), maximum egg production; and T(to,tq), total lifetime egg production. Homozygous snqr females present higher values of α and lower values of tq, N(tmax), and T(to,tq) than heterozygous and wild-type homozygous females. Egg-to-larva viability along female lifetime related with the different physiological stages of the egg-laying curve (increasing, maximum, and decreasing parts) has been also studied. Homozygous snqr females show low viability and decreasing with age compared to wild-type females. In some cases, different physiological stages of the egg production curve show characteristic egg-to-larva viability values.

scholarly journals Parameters characterizing the charge state of dielectrics

2017 ◽  
Vol 35 (3) ◽  
pp. 601-605 ◽  
Author(s):  
Bożena Łowkis
Keyword(s):  
Free Surface ◽  
Electric Field ◽  
Charge State ◽  
Free Volume ◽  
Infinite Number ◽  
Polarization State ◽  
Surface Charges ◽  
Volume Conductivity ◽  
Total Lifetime ◽  
Relaxation Decay

AbstractThis paper presents three physical sources of the electric field in dielectrics: excess free volume charges with the distribution qv(x,y,z), free surface charges with the distribution qs(x,y,z) and frozen polarization state in the dielectric. They have a deciding influence on the parameters of the electret, in particular they determine the total lifetime of the electret and technical components made of it. The indeterminacy related to the mutual proportions of the spatial and surface charges was discussed: one can find an infinite number of distributions of surface qse(x,y,z) and spatial qve(x,y,z) charges leading to the same distribution of the electric field E(x,y,z). A general case of electret was considered, where a coexistence of relaxation decay of frozen polarization and Maxwellian relaxation dependent on volume conductivity of the dielectric is assumed. An attempt to interpret the charge lifetime in real electrets was made.

scholarly journals Heavy quark expansion for heavy hadron lifetimes: completing the $$ 1/{m}_b^3 $$ corrections

2020 ◽  
Vol 2020 (8) ◽  
Author(s):  
Th. Mannel ◽  
D. Moreno ◽  
A. A. Pivovarov
Keyword(s):  
Heavy Quark ◽  
Spin Orbit ◽  
Leading Order ◽  
Total Lifetime ◽  
Heavy Hadron

Abstract We complete the calculation of the contributions from the dimension six operators in the heavy quark expansion for the total lifetime of heavy hadrons. We give the leading order expressions for the Wilson coefficients of the Darwin term ρD and the spin-orbit term ρLS.

A comparative analysis of population characteristics of the competing progeny (within UK) of UK elite eventing sires and all competing event horses within the UK

2004 ◽  
Vol 32 ◽  
pp. 191-193 ◽  
Author(s):  
T C Whitaker ◽  
J Hill
Keyword(s):  
Comparative Analysis ◽  
Data Transformation ◽  
Descriptive Statistics ◽  
Population Characteristics ◽  
Horse Population ◽  
Data Set ◽  
Total Lifetime ◽  
Breed Improvement ◽  
The Uk ◽  
Show Jumping

A greater understanding of the population characteristics of sport horse populations is required to enable potential breed improvement programmes to be formulated correctly and be effective in their outcomes. To date limited research has been conducted into the UK sport horse population.A selected group of progeny (n=339) sired by elite eventing stallions was examined. In the context of this study elite sires were defined as those that were ranked 1-10 by total lifetime points won by competing progeny up to the end of 2000 (British Horse Database, 2000). Comparative analysis was undertaken between the selected group and all competing eventing horses in 2000 (n=9387) (British Horse Database, 2000). Data collected for both groups included, total lifetime points won at eventing and dressage and total lifetime money won at show jumping. Basic descriptive statistics were produced for each data set (Table 1). Product moment correlations were performed for all discipline areas (Table 2). Data transformation was applied using LOG+1(Hassenstein, Roehe, and Kalm, 1996).

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