Family Transitions: Continuity and Change Over the Life Cycle

This paper utilizes a national panel study of two biologically linked generations to study political change and continuity between 1965 and 1973. Four basic processes and combinations thereof are posited: absolute continuity, generational effects, life-cycle effects, and period effects. Data at the aggregate level give strong support for each type of change and continuity progression, depending upon the substantive political orientation examined. There are also strong traces of hybrid effects, especially the combination of period and life-cycle processes acting to propel the younger generation at a faster clip than the older. Over the eight-year span the absolute cleavage between the generations tended to decline, the major exception occurring with respect to specific issues and partisanship. The anomaly of this strain toward convergence in the light of the generation gap controversy is discussed.

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Dynamics of Reciprocity and Networks of the Kyrgyz through Bishkek Toi Making

Central Asian Affairs ◽

10.1163/22142290-00402005 ◽

2017 ◽

Vol 4 (2) ◽

pp. 197-216 ◽

Cited By ~ 1

Author(s):

Cholpon Turdalieva ◽

Rene Provis

Keyword(s):

Life Cycle ◽

Social Solidarity ◽

Continuity And Change

Important life-cycle events in Kyrgyz society are marked by the staging of large, informal feasting celebrations, known collectively as toi. This article discusses continuity and change in the materiality and spirituality of toi making, specifically in urban Bishkek, the capital of Kyrgyzstan. Organized on a larger scale and with more expenses than elsewhere in the country, Bishkek toi demonstrate material and spiritual reciprocities that are crucial in the reproduction of social solidarity and exclusion, as well as poverty, prestige, and power in the post-socialist context.

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Ultrastructural analysis of “Sensory” surface nerve endings and “putative” neurotransmitter sites in Schistosoma mansoni Miracidia

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100156791 ◽

1989 ◽

Vol 47 ◽

pp. 962-963

Author(s):

Betty Ruth Jones ◽

Steve Chi-Tang Pan

Keyword(s):

Nervous System ◽

Life Cycle ◽

Schistosoma Mansoni ◽

Snail Host ◽

Complex Life Cycle ◽

Rational Approach ◽

Effective Control ◽

The Social ◽

Social And Economic Development ◽

Basic Biology

INTRODUCTION: Schistosomiasis has been described as “one of the most devastating diseases of mankind, second only to malaria in its deleterious effects on the social and economic development of populations in many warm areas of the world.” The disease is worldwide and is probably spreading faster and becoming more intense than the overall research efforts designed to provide the basis for countering it. Moreover, there are indications that the development of water resources and the demands for increasing cultivation and food in developing countries may prevent adequate control of the disease and thus the number of infections are increasing.Our knowledge of the basic biology of the parasites causing the disease is far from adequate. Such knowledge is essential if we are to develop a rational approach to the effective control of human schistosomiasis. The miracidium is the first infective stage in the complex life cycle of schistosomes. The future of the entire life cycle depends on the capacity and ability of this organism to locate and enter a suitable snail host for further development, Little is known about the nervous system of the miracidium of Schistosoma mansoni and of other trematodes. Studies indicate that miracidia contain a well developed and complex nervous system that may aid the larvae in locating and entering a susceptible snail host (Wilson, 1970; Brooker, 1972; Chernin, 1974; Pan, 1980; Mehlhorn, 1988; and Jones, 1987-1988).

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A freeze-fracture-etched study of the physarum polycephalum plasma membrane during early formation of the macroplasmodial stage

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100147570 ◽

1993 ◽

Vol 51 ◽

pp. 346-347

Author(s):

Randolph W. Taylor ◽

Henrie Treadwell

Keyword(s):

Plasma Membrane ◽

Life Cycle ◽

Growth Phase ◽

Filter Paper ◽

Physarum Polycephalum ◽

Freeze Fracture ◽

Petri Dish ◽

Wire Screen ◽

Wide Mouth ◽

Sterile Filter

The plasma membrane of the Slime Mold, Physarum polycephalum, process unique morphological distinctions at different stages of the life cycle. Investigations of the plasma membrane of P. polycephalum, particularly, the arrangements of the intramembranous particles has provided useful information concerning possible changes occurring in higher organisms. In this report Freeze-fracture-etched techniques were used to investigate 3 hours post-fusion of the macroplasmodia stage of the P. polycephalum plasma membrane.Microplasmodia of Physarum polycephalum (M3C), axenically maintained, were collected in mid-expotential growth phase by centrifugation. Aliquots of microplasmodia were spread in 3 cm circles with a wide mouth pipette onto sterile filter paper which was supported on a wire screen contained in a petri dish. The cells were starved for 2 hrs at 24°C. After starvation, the cells were feed semidefined medium supplemented with hemin and incubated at 24°C. Three hours after incubation, samples were collected randomly from the petri plates, placed in plancettes and frozen with a propane-nitrogen jet freezer.

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