scholarly journals Biological Factors affecting Family Size

1949 ◽  
Vol 3 (1) ◽  
pp. 1-9
Author(s):  
F. A. E. Crew
Keyword(s):  
Family Size ◽  
Biological Factors ◽  
Factors Affecting

scholarly journals Survey on Public Psychological Intervention Demand and Influence Factors Analysis

2021 ◽  
Vol 18 (9) ◽  
pp. 4808
Author(s):  
Fang Su ◽  
Bingjie Fan ◽  
Nini Song ◽  
Xue Dong ◽  
Yanxia Wang ◽  
...  
Keyword(s):  
Risk Perception ◽  
Family Size ◽  
Psychological Intervention ◽  
Control Period ◽  
Influence Factors ◽  
Negative Influence ◽  
Internet Survey ◽  
Psychological Status ◽  
Factors Affecting ◽  
Epidemic Period

Major public health emergencies would have a negative influence on the psychology of the public, and an effective psychological intervention can help them to relieve some emotions, such as tension and panic. However, differences in individual environments affect people’s psychological intervention demands and intervention mode choices. Therefore, it is of great theoretical and practical value to analyze and identify the key factors affecting these demands and choices. Based on a nationwide sample of 24,188 respondents from the “Internet Survey of Residents’ Behavioral Changes and Psychological Conditions during the Epidemic,” the different characteristics of public psychological intervention demands and choices under different factors are explored in this paper. The results demonstrate that: (1) the psychological status of Chinese people was relatively stable during the epidemic period, and there were 1016 respondents who had subjective demands for a psychological intervention, (2) age, gender, occupation type, residence, family size, risk perception, psychological status, education level, and fixed expenditure all significantly affect public psychological intervention demands, and (3) risk perception, psychological status, age, gender, and family size will impact the choice of psychological intervention methods. The above results can provide a decision-making basis for the construction of a psychological intervention system in psychological crisis management during the post-epidemic prevention and control period, as well as reference and suggestions for handling psychological stress of similar sudden crisis events in the future.

Factors affecting desired family size in Bangladesh

1994 ◽  
Vol 26 (3) ◽  
pp. 369-375 ◽  
Author(s):  
M. Kabir ◽  
Ruhul Amin ◽  
Ashraf Uddin Ahmed ◽  
Jamir Chowdhury
Keyword(s):  
Regression Analysis ◽  
Family Size ◽  
Contraceptive Use ◽  
Policy Implications ◽  
Work Status ◽  
Factors Affecting ◽  
Rural Bangladesh ◽  
Contraceptive Prevalence ◽  
Using Data ◽  
Desired Family Size

SummaryFactors affecting desired family size in rural Bangladesh are examined using data from contraceptive prevalence surveys conducted between 1983 and 1991. The analysis suggests that mothers having two sons and one daughter are more inclined to perceive their family as complete than those having three sons and no daughter. Logistic regression analysis indicates that important determinants of desire for more children are age of woman, current contraceptive use status, work status, and family planning worker's visit. The policy implications of these findings are discussed.

Factors affecting desired family size among preliterate New Guinea mothers

1985 ◽  
Vol 23 (5) ◽  
pp. 413-420 ◽  
Author(s):  
Ronald E. Pust ◽  
Jeanne S. Newman ◽  
Janet Senf ◽  
Esther Stotik
Keyword(s):  
Family Size ◽  
New Guinea ◽  
Factors Affecting ◽  
Desired Family Size

scholarly journals FAKTOR-FAKTOR YANG MEMPENGARUHI TOKSISITAS BAHAN PENCEMAR TERHADAP ORGANISME PERAIRAN

OSEANA ◽  
2019 ◽  
Vol 42 (2) ◽  
pp. 12-22
Author(s):  
Triyoni Purbonegoro
Keyword(s):  
Environmental Factors ◽  
Physicochemical Properties ◽  
Aquatic Environment ◽  
Aquatic Ecosystems ◽  
Physiological Condition ◽  
Aquatic Organisms ◽  
Combined Effects ◽  
Biological Factors ◽  
Factors Affecting ◽  
Major Factors

FACTORS THAT AFFECTING THE TOXICITY OF POLLUTANTS TO AQUATIC ORGANISMS. There are a large number of pollutants in aquatic environment with various characteristics and factors that can modify and affect the toxicity of pollutants in this environment. The major factors affecting pollutant toxicity include physicochemical properties of pollutants, mode of exposure, time, environmental factors, and biological factors. Moreover, organisms in an aquatic ecosystem are seldom exposed to only single pollutant, and most cases the stress of pollution on aquatic ecosystems is related to the interaction and combined effects of many chemicals. The combined effects may be synergistic or antagonistic, depending on the pollutants and the physiological condition of the organism involved.

Biological factors affecting enflagellation of Naegleria fowleri

1982 ◽  
Vol 152 (2) ◽  
pp. 803-808
Author(s):  
T W Woodworth ◽  
D T John ◽  
S G Bradley
Keyword(s):  
Population Density ◽  
Stationary Phase ◽  
Culture Medium ◽  
Actinomycin D ◽  
Suitable Model ◽  
Naegleria Fowleri ◽  
Biological Factors ◽  
Factors Affecting ◽  
Nægleria Fowleri ◽  
Amoeboid Cells

Naegleria fowleri is a pathogenic amoeboflagellate that can be evoked to transform from amoebae to flagellates by subculture to nonnutrient buffer. More than half of the amoebae of strains KUL, nN68, and Lovell became enflagellated 300 min after subculture to amoeba-saline, whereas no amoebae of strains NF66, NF69, and HB4 did. N. fowleri nN68 enflagellated best when grown at 32 or 37 degrees C and subcultured to amoeba-saline at 37 or 42 degrees C. Amoebae from the stationary phase of growth enflagellated more readily than did actively growing amoebae. Incubation in expended culture medium from stationary-phase cultures enhanced the capability of growing amoebae to enflagellate after subculture to amoebasaline. Enflagellation was more extensive when the population density in amoebasaline did not exceed 2 x 10(5) amoebae per ml. Cycloheximide at 1 microgram/ml and actinomycin D at 25 micrograms/ml inhibited growth of N. fowleri nN68. Cycloheximide at 0.5 microgram/ml and actinomycin D at 25 micrograms/ml completely prevented enflagellation when added at time zero. Cycloheximide at 0.5 microgram/ml, added 120 to 300 min after initiation of enflagellation, prevented further differentiation and caused existing flagellates to revert to amoeboid cells. Similarly, actinomycin D at 25 micrograms/ml, added 90 to 300 min after initiation of enflagellation, retarded differentiation and caused flagellates to revert. Radiolabeled precursors were incorporated into macromolecules during differentiation in nonnutrient buffer. Enflagellation of N. fowleri is a suitable model for studying regulation of a eucaryotic protist.

scholarly journals Biological factors affecting long-term results of valvular heterografts

1969 ◽  
Vol 58 (4) ◽  
pp. 467-483 ◽  
Author(s):  
Alain Carpentier ◽  
Guy Lemaigre ◽  
Ladislas Robert ◽  
Sophie Carpentier ◽  
Charles Dubost ◽  
...  
Keyword(s):  
Long Term Results ◽  
Biological Factors ◽  
Factors Affecting

Chemical and biological factors affecting mutagen potency

1998 ◽  
Vol 400 (1-2) ◽  
pp. 479-492 ◽  
Author(s):  
Michael E. Colvin ◽  
Frederick T. Hatch ◽  
James S. Felton
Keyword(s):  
Biological Factors ◽  
Factors Affecting

Factors Affecting Parasitization of Spodoptera exigua (Lepidoptera: Noctuidae) and Sex Ratio of the Parasitoid Cotesia marginiventris (Hymenoptera: Braconidae)

2001 ◽  
Vol 36 (2) ◽  
pp. 188-198 ◽  
Author(s):  
P. Glynn Tillman
Keyword(s):  
Sex Ratio ◽  
Adult Female ◽  
Spodoptera Exigua ◽  
Beet Armyworm ◽  
Cotesia Marginiventris ◽  
Biological Factors ◽  
Female Progeny ◽  
Factors Affecting ◽  
Lepidoptera Noctuidae

Biological factors hypothesized to affect parasitization by Cotesia marginiventris (Cresson) (Hymenoptera: Braconidae), an endoparasitoid of larvae of the beet armyworm, Spodoptera exigua (Hübner) (Lepidoptera: Noctuidae), as well as its sex ratio, were examined in the laboratory. Highest parasitization occurred when (1) adult female parasitoids were closely associated with hosts, (2) adult female parasitoids were 1 day old, (3) a host:female parasitoid ratio of between 10:1 and 30:1 was maintained, (4) second-instar beet armyworms were used as hosts, and (5) adult female parasitoids were exposed to hosts for 24 h. Percentage of female progeny was higher when females were closely associated with second instars.

Sign in / Sign up

Export Citation Format

Share Document