Relaxed regulation of Dermacentor variabilis (Say) in Nova Scotia

1982 ◽  
Vol 60 (10) ◽  
pp. 2529-2532 ◽  
Author(s):  
W. D. McEnroe
Keyword(s):  
Life Cycle ◽  
Nova Scotia ◽  
New England ◽  
Dermacentor Variabilis ◽  
Breeding Period ◽  
Development Cycle ◽  
Full Production ◽  
The One

The development cycle of Dermacentor variabilis (Say) in Nova Scotia allows the full production of diapause larvae from the spring adult breeding period. The overwinter stages, larvae and adults, cope with the harsh winter environment. The shift from the two cohort life cycle of D. variabilis in New England to the one cohort cycle in Nova Scotia removes the regulation involved in the passage from the spring adult cohort to the summer adult cohort.

Pollen evidence for the postglacial origins of Nova Scotia's forests

1987 ◽  
Vol 65 (6) ◽  
pp. 1163-1179 ◽  
Author(s):  
David G. Green
Keyword(s):  
Nova Scotia ◽  
New Brunswick ◽  
New England ◽  
Ice Sheets ◽  
Arrival Times ◽  
Local Environments ◽  
Pollen Diagrams ◽  
Propagule Dispersal ◽  
Coastal Shelf ◽  
Maritime Canada

Pollen diagrams from sites in southwest Nova Scotia and close to the New Brunswick – Nova Scotia border show that after retreat of the Wisconsin ice sheets, most tree taxa arrived in the extreme southwest of Nova Scotia earlier than anywhere else in the province. For most tree taxa, arrival times at sites in maritime Canada and in northeastern New England are consistent with very early dispersal of individuals along the coastal strip via the exposed coastal shelf and with their entering Nova Scotia from the southwest. These scattered pioneer populations acted as centres for major population expansions, which followed much later in some cases. Local environments, fire, and interspecies competition appear to have been more important than propagule dispersal rates as factors limiting the spread of most taxa.

The Contributions of Oscar Halecki to American Historical Scholarship

1976 ◽  
Vol 4 (2) ◽  
pp. 89-97
Author(s):  
Thaddeus V. Gromada
Keyword(s):  
World War Ii ◽  
Civil Rights ◽  
New England ◽  
The United States ◽  
Urban Centers ◽  
Oil Refineries ◽  
Middle Atlantic ◽  
Steel Mills ◽  
Social Opportunities ◽  
The One

Most of the one and one-half million Poles who immigrated to the United States before World War II were people of rural, Catholic, Slavic stock in search of greater economic and social opportunities. They settled in urban centers primarily in the middle Atlantic, mid-Western, and New England states where they formed communities (Polonias) around the steel mills, coal and iron mines, slaughter houses and meat packing plants, oil refineries, shoe and textile factories, granaries and milling plants. Their labor was an important element in the industrialization of America. They were among the millions of unknown persons from eastern and southern Europe, as Michael Novak put it, “who have strengthened family and neighborhood life in America, and from 1930's to the present have made possible the longest strides in the nation's history in economic matters and civil rights.” Very few scholars and intellectuals, however, could be found among these Polish immigrants. When Polish scholars, intellectuals, or artists emigrated from partitioned Poland, usually after unsuccessful revolutions, they settled in France or some other European country.

Observing microscopic phases of lichen life cycles on transparent substrata placed in situ

2005 ◽  
Vol 37 (5) ◽  
pp. 373-382 ◽  
Author(s):  
William B. SANDERS
Keyword(s):  
Life Cycle ◽  
Developmental Stages ◽  
Life Cycles ◽  
Potential Significance ◽  
Free Living ◽  
Lichen Community ◽  
One Year ◽  
The One ◽  
Observation Period

The utility of plastic cover slips as a substratum for in situ study of lichen developmental stages is further explored in a neotropical foliicolous lichen community and in a European temperate corticolous community. Twenty-one months after placement in the tropical forest, the cover slips bore foliicolous lichen thalli with several species producing characteristic ascocarps and ascospores, indicating the suitability of the substratum for completion of the life cycle of these lichens. On cover slips placed within the temperate corticolous community, lichen propagules anchored to the substratum with relatively short attachment hyphae but did not develop further within the one year observation period. Intimately intermixed microbial communities of short-celled, mainly pigmented fungi and chlorophyte algae developed upon the transparent substratum. Among the algae, Trebouxia cells, often in groups showing cell division and without associated lichenizing hyphae, were commonly observed. The potential significance of the free-living populations in the life cycle of Trebouxia and in those of Trebouxia-associated lichen fungi is discussed.

THE DECADENCE OF THE AMERICAN FAMILY AS VIEWED IN 1884

PEDIATRICS ◽  
1977 ◽  
Vol 59 (1) ◽  
pp. 91-91
Author(s):  
T. E. C.
Keyword(s):  
New England ◽  
European Country ◽  
Family Life ◽  
American Family ◽  
Domestic Life ◽  
Additional Element ◽  
Mutual Help ◽  
Progressive Deterioration ◽  
The Family ◽  
The One

Almost a century ago editorials such as the one below expressed the fear that the American family was in serious trouble. We do not like to be doleful, but it is impossible to ignore some of the facts that have been presented with the last year or two [1882] by Dr. Goodell, Dr. Nathan Allen, and others. These facts relate to...the decadence of family life among Americans. Dr. Allen, who has been studying this subject for many years, presents the case very directly in an article entitled "The New England Family" (The New Englander). It is asserted that the objects of the institution of the family are three: the propagation of children, the preservation of chastity, mutual help and company. In each of these respects the American family, especially the New England family, shows a marked and progressive deterioration, since one hundred years ago. As regards the propagation of children, it is shown that the average native New England family is very much less productive than formerly.... The birthrate in New England families has been steadily declining until now it is lower than that of any European country except France. One additional element in this, no doubt, is the habit of delaying marriages-a habit made almost necessary by the more expensive style of living which is demanded, and by what some consider the selfishness of young men who prefer not to sacrifice their liberty to the responsibility and expense of domestic life. Another indication of family deterioration is the increase of divorces.

scholarly journals The Search forIxodes damminiandBorrelia burgdorferiin Nova Scotia

1992 ◽  
Vol 3 (5) ◽  
pp. 224-230 ◽  
Author(s):  
Colin R Bell ◽  
Harold B Specht ◽  
B Ann Coombs
Keyword(s):  
Nova Scotia ◽  
Indirect Fluorescent Antibody Test ◽  
Fluorescent Antibody ◽  
Antibody Test ◽  
Dermacentor Variabilis ◽  
Small Sample ◽  
Enzyme Linked Immunosorbent Assay ◽  
Indirect Fluorescent Antibody ◽  
Migrating Birds ◽  
Sera Samples

Twenty-fourIxodes damminiticks (23 adults and one nymph) have been recovered in Nova Scotia since 1984. There has not been a systematic search for larvae and none has been identified. The recovery of the nymph from a road-killed yellow throat bird,Geothypis trichas,in late May 1990 supports the contention that migrating birds are bringing deer ticks into the province every spring. In March and April 1991, four adult deer ticks were identified, suggesting that these ticks had overwintered. These deer tick specimens indicate that it is possible thatI damminiis becoming established in Nova Scotia, if it is not already established. There has been no evidence for the existence ofBorrelia burgdorferiin the province. The spirochete was not cultured from 650Dermacentor variabilisticks, nor were antibodies detected in a small sample of feral rodents using an indirect fluorescent antibody test. A survey of 137 dog sera samples, analyzed by enzyme-linked immunosorbent assay, also proved negative. There has been no confirmed indigenous case of Lyme disease in Nova Scotia to date.

scholarly journals MUTATIONS INCREASING ASEXUAL PLASMODIUM FORMATION IN PHYSARUM POLYCEPHALUM

Genetics ◽  
1977 ◽  
Vol 87 (3) ◽  
pp. 401-420
Author(s):  
Paul N Adler ◽  
Charles E Holt
Keyword(s):  
Life Cycle ◽  
Mating Type ◽  
Physarum Polycephalum ◽  
The Other ◽  
Type Allele ◽  
Cold Sensitive ◽  
The One

ABSTRACT Rare plasmodia formed in clones of heterothallic amoebae were analyzed in a search for mutations affecting plasmodium formation. The results show that the proportion of mutants varies with both temperature (18°, 26° or 30°) and mating-type allele (mt1, mt2, mt3, mt4). At one extreme, only one of 33 plasmoida formed by mt2 amoebae at 18° is mutant. At the other extreme, three of three plasmodia formed by mt1 amoebae at 30° are mutant. The mutant plasmodia fall into two groups, the GAD (greater asexual differentiation) mutants and the ALC (amoebaless life cycle) mutants. The spores of GAD mutants give rise to amoebae that differentiate into plasmodia asexually at much higher frequencies than normal heterothallic amoebae. Seven of eight gad mutations analyzed genetically are linked to mt and one (gad-12) is not. The gad-12 mutation is expressed in strains with different alleles of mt. The frequency of asexual plasmodium formation is heat sensitive in some (e.g., mt3 gad-11), heat-insensitive in two (mt2 gad-8 and mt2 gad-9) and cold-sensitive in one (mt1 gad-12) of twelve GAD mutants analyzed phenotypically. The spores of ALC mutants give rise to plasmodia directly, thereby circumventing the amoebal phase of the life cycle. Spores from five of the seven ALC mutants give rise to occasional amoebae, as well as plasmodia. The amoebae from one of the mutants carry a mutation (alc-1) that is unlinked to mt and is responsible for the ALC phenotype in this mutant. Like gad-12, alc-1 is expressed with different mt alleles. Preliminary observations with amoebae from the other four ALC mutants suggest that two are similar to the one containing alc-1; one gives rise to revertant amoebae, and one gives rise to amoebae carrying an alc mutation and a suppressor of the mutation.

scholarly journals DevOPS Now and Then

2020 ◽  
Author(s):  
Raju Singh
Keyword(s):  
Life Cycle ◽  
Software Development ◽  
Continuous Improvement ◽  
Building Blocks ◽  
Extended Version ◽  
Agile Method ◽  
Development Cycle ◽  
Development Life Cycle ◽  
Continuous Delivery ◽  
Software Development Life Cycle

DevOps is an emerging practice to be followed in the Software Development life cycle. The name DevOps indicates that it’s an integration of the Development and Operation team. It is followed to integrate the various stages of the development cycle. DevOps is an extended version of the existing Agile method. DevOps aims at continuous integration, Continuous Delivery, Continuous Improvement, faster feedback and security. This paper reviews the building blocks of DevOps, challenges in adopting DevOps, Models to improve DevOps practices and Future works on DevOps

scholarly journals To transport waste or transport recycling plant: Insights from life-cycle analysis

2017 ◽  
Vol 105 (5-6) ◽  
pp. 516
Author(s):  
Guilhem Grimaud ◽  
Bertrand Laratte ◽  
Nicolas Perry
Keyword(s):  
Life Cycle ◽  
Life Cycle Analysis ◽  
Treatment Cost ◽  
Point Of View ◽  
Environmental Benefits ◽  
The Other ◽  
Economic Balance ◽  
The One ◽  
Waste Deposit ◽  
Centralized System

The purpose of this study is to determine the environmental and economic balance between a collection of waste requiring the transport to a centralized recycling plant versus the displacement of a recycling plant near the waste production’s location. Two systems are compared in the study with economic and environmental Life cycle analysis (LCC and LCA) tools. The first one considers a centralized recycling plant that gathers batch of cables from different locations in Europe. The second scenario considers a transportable recycling plant, the Cablebox (designed by MTB Manufacturing), which is regularly carried to be close to the waste deposit to recycle waste cables. On the one hand, the study demonstrates huge environmental benefits for transportable recycling plants in comparison with the centralized system. The overall environmental impact is halved on the climate change indicator. On the other hand, the results show the economic advantages of such solution. The treatment cost per ton of recycling is reduced by 5 to 8%. Transportable recycling solutions seem to be a good answer to solve End-of-Life logistic issues, both from an economic and an environmental point of view.

Macroinfauna of Northern New England marine sand. IV. Infaunal ecology of Amphiporeia virginiana Shoemaker, 1933 (Crustacea: Amphipoda)

1979 ◽  
Vol 57 (8) ◽  
pp. 1511-1519 ◽  
Author(s):  
Richard P. Hager ◽  
Robert A. Croker
Keyword(s):  
South Carolina ◽  
New England ◽  
Late Summer ◽  
Fine Sand ◽  
High Energy ◽  
Breeding Period ◽  
Population Fluctuations ◽  
Marine Sand ◽  
Annual Population ◽  
Early Fall

Amphiporeia virginiana occurs from Nova Scotia to South Carolina where it is a dominant inhabitant of high energy sand beaches. Maximum abundance occurs on the lower foreshore in fine sand particularly during summer months. Within-habitat segregation of sexes occurs, with females more abundant at higher beach levels; ovigerous females are confined to higher levels only. Annual population fluctuations of up to 14-fold on a geometric basis are related to life history events and sedimentary changes. Breeding occurs during most of the year with peak recruitment during June and late summer to early fall, yielding summer and overwintering generations. Precopulating animals are commonly seen swimming, with two males per female occasionally evident. Females produce a mean of 6–11 eggs during the year and have one brood per breeding period. The species is a detritivore and generally inhabits the upper 2.5 cm of sand. It is most tolerant of salinities in the range of 25–35‰; mortality increases rapidly in salinities less than 20‰, and in sediments containing less than 11% water by weight exposed to temperatures simulating hot summer days.

Native Americans, Conversion, and Christian Practice in Colonial New England, 1640—1730

2009 ◽  
Vol 102 (1) ◽  
pp. 101-124 ◽  
Author(s):  
Linford D. Fisher
Keyword(s):  
Native Americans ◽  
New England ◽  
Massachusetts Bay ◽  
Native Culture ◽  
Massachusetts Bay Colony ◽  
Colonial New England ◽  
The One ◽  
Christian Practices ◽  
Gospel Message ◽  
Over Time

Fortunately, the two travelers arrived before sunset. Earlier in the day, on 5 May 1674, John Eliot and Daniel Gookin had set out from Boston for Wamesit, the northernmost of the fourteen Indian “praying towns” within the Massachusetts Bay Colony, and the one most subjected to retaliatory attacks from raiding bands of Mohawks in the previous few years. Upon safe arrival, the Englishmen greeted their Pennacook friends and gathered as many as they could at the wigwam of Wannalancet, the head sachem of Wamesit, where Eliot, the aging missionary to the Indians, proceeded to talk about the meaning of the parable of the marriage of the king's son in Matthew 22:1—4. Wannalancet, according to Gookin, was a “sober and grave person, and of years, between fifty and sixty”; he had from the beginning been “loving and friendly to the English,” and in return they had tried to encourage him to embrace Christianity. Although the English missionaries would have desired him to readily accept the gospel message they preached, Wannalancet voluntarily incorporated Christian practices slowly, over time, without necessarily repudiating his native culture and traditional religious practices.1 For four years Wannalancet “had been willing to hear the word of God preached”; when Eliot or other missionaries made their periodic visits to Wamesit, Wannalancet made sure he was there. Over time, Wannalancet adopted the English practices of keeping the Sabbath, learning to go to any available meeting or instruction, fellowshipping, and refraining from various activities proscribed by the town's praying leaders. Despite all that, however, the English missionaries still complained that he “hath stood off” since he had “not yielded up himself personally.”2

Sign in / Sign up

Export Citation Format

Share Document