Survival, Fecundity, and Population Growth of Melanoplus bilituratus (Wlk.) (Orthoptera: Acrididae) in Relation to Date of Hatching

1960 ◽  
Vol 92 (1) ◽  
pp. 1-10 ◽  
Author(s):  
R. Pickford

In Western Canada, Melanoplus bilituratus (Wlk.) may hatch from early May to mid-July, depending on seasonal conditions. Little information is available on the relationship of time of hatching to population growth except that grasshoppers emerging too early in the spring may be destroyed by adverse weather that often occurs at this time (Shotwell, 1941). Also, it has beenassumed that grasshoppers hatching late in the summer mature too late to contribute much to general population growth.

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Nurshad Ali ◽  
Abu Hasan Sumon ◽  
Khandaker Atkia Fariha ◽  
Md Asaduzzaman ◽  
Rahanuma Raihanu Kathak ◽  
...  

AbstractObesity is a global health concern because of its increasing trend both in developed and developing countries. A limited number of studies have evaluated the association of liver enzymes with both general and abdominal obesity in the general population; data for the Bangladeshi population are not available yet. This study aimed to assess the relationship of serum liver enzymes activity with both general and abdominal obesity in Bangladeshi adults. In total, 540 blood samples were obtained from the participants (388 males and 152 females) and analyzed for serum levels of ALT, AST, GGT, and ALP using standard methods. General obesity was defined as body mass index (BMI) ≥ 27.5 kg/m2 and abdominal obesity was defined as waist circumference (WC) ≥ 90 cm in males and ≥ 80 cm in females. The relationship between liver enzymes and obesity was evaluated by multivariate logistic regression models. Overall, 58% of participants in the general obesity group and 55% of the participants in the abdominal obesity group had at least one or more elevated levels of liver enzymes. The prevalence of elevated liver enzymes was significantly higher in the obesity group compared to the normal BMI and WC groups (p < 0.05 for all cases). The mean level of serum ALT, AST and GGT were significantly higher in the obesity group than the normal BMI group (p < 0.05). In the WC groups, mean AST and GGT were significantly higher in the obesity group compared to the normal group (p < 0.05). In regression analysis, serum levels of ALT showed an independent and significant association with general obesity, whereas, serum GGT showed a significant association with both general and abdominal obesity. In conclusion, a high prevalence of elevated liver enzymes was observed among participants included in the present study. Of the four enzymes, serum GGT was independently associated with both general and abdominal obesity. Further studies are required to understand the complex relationship between liver enzymes and obesity in the general population.


1999 ◽  
Vol 4 (1) ◽  
pp. 41-52
Author(s):  
M.S. Jillani

The debate over the relationship of population and development is now more than 200 years old, starting with the treatise on population by Malthus, in 1798. The increase in population, ever since, has remained a matter of concern for economists and development planners. The most recent high point of the issue was witnessed at Cairo in September, 1994. The conference which was attended by more than 10,000 persons from all over the world ended with an agreement on the issues involved in the growth of population and the economy. The outcome was a Plan of Action for the next twenty years, which would concentrate on Reproductive Health in order to obtain, “a state of complete physical, mental and social wellbeing, and not merely the absence of disease or infirmity in all matters relating to the reproductive system and its functions and process”. This can be a turn-around in global efforts for human health and welfare, if properly implemented.


Author(s):  
Sarah-Neel Smith

The Newcomers Group [YenilerGrubu] was formed in 1940 while its members were still students at the Istanbul Academy of Fine Arts under Leopold Levy (1840–1904), and was active through 1952. It is also known as the Harbor Group [LimanGrubu], in reference to the theme of the collective’s first exhibition, which featured scenes of waterfront life in Istanbul. Similar to art collective D Group (1933–1947), the Newcomers aimed to portray what they saw as uniquely Turkish social realities using formal strategies associated with Western modernity, including impressionist, fauvist, and cubist painting techniques. At the same time, the Newcomers claimed with greater urgency than the D Group that local artists were obligated to engage directly with Turkey’s general population. This preoccupation with the relationship of the artist in an elite social position to the larger national body was closely linked to ongoing debates both in state policy (reflected in the development of the Homeland Tours program from 1938–1943, and the Village Institutes from 1940–1954) and in the Turkish literary world. As a result, the Newcomers received ample press coverage and the support of major literary figures such as Hilmi Ziya Ülken (1901–1974) and Ahmet Hamdi Tanpınar (1901–1962), who also sought to develop national art forms rooted in Turkish popular experience.


1964 ◽  
Vol 110 (465) ◽  
pp. 244-254 ◽  
Author(s):  
G. Hopkinson

The genetic evidence concerning affective illness of later life is still conflicting and the relationship of such conditions to the manic-depressive psychosis unclear. Kallman (1955) believed that, genetically, involutional melancholia bore a closer relationship to schizophrenia than to the manic-depressive psychosis. An increased risk for schizophrenia amongst the relatives of such patients was not observed by Kay (1959) and Stenstedt (1952). Both these writers do however describe a lower loading for manic-depressive psychosis than would be found amongst the relations of manic-depressive patients, though a much higher incidence than in the general population. Both Stenstedt and Kay assumed that they were dealing with a heterogeneous group of patients containing both psychotic and neurotic depressions.


1984 ◽  
Vol 54 (2) ◽  
pp. 547-553 ◽  
Author(s):  
Paul N. Dixon ◽  
Donald A. Strano ◽  
Welborn Willingham

The relationship of locus of control to deciding on an abortion was investigated. Rotter's Scale was given to 118 women immediately prior to abortion, 2 wk., and 3 mo. following the abortion. Subjects' locus of control scores were compared across the three times, and the abortion group's pretest scores were compared with those of a nonpregnant control group. As hypothesized, the aborting group scored significantly more internal than the general population but no differences in locus of control were found across the three times. The length of delay in deciding to abort an unwanted pregnancy following confirmation was also assessed. Women seeking first-trimester abortions were divided into internal and external groups on the Rotter Locus of Control Scale and the lengths of delay were compared. The hypothesis that external scorers would delay the decision longer than internal ones was confirmed. The results confirm characteristics of the locus of control construct and add information about personality characteristics of women undergoing abortion.


Author(s):  
Jaroslav Dufek

The work deals with the evaluation of an achieved level of the basic characteristics of the demographic dynamic in the regions in 2005, dividing regions to homogenous groups always according to pairs of indicators having logical relationship between each other. As a pair characterizing population migration were selected a rate of marriages – divorces, marriages – births, births – mortalities, immigrations – emigrations, natural population growth – immigration population growth. According to a direction of the research intention a special attention was paid to South Moravia region and to Vysočina region. According to an expected reciprocal relationship of the rate of marriages – births the regression function was determined including a correlative index (I = 0,739*), confirming and quantifying the relationship.


1989 ◽  
Vol 25 (7) ◽  
pp. A84-A85 ◽  
Author(s):  
Gerald Nestadt ◽  
Alan J. Romanoski ◽  
C.Hendricks Brown ◽  
William W. Eaton ◽  
Marshall F. Folstein ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document