Records of settlement of the M5 motorway over the Somerset Levels

1991 ◽  
Vol 7 (1) ◽  
pp. 627-635 ◽  
Author(s):  
D. Cook ◽  
G. Pereira
Keyword(s):  
Laboratory Tests ◽  
Data File ◽  
Operative Field ◽  
Alluvial Deposits ◽  
Low Level ◽  
Secondary Compression ◽  
Key Features ◽  
Statistical Relationships ◽  
Complex Deposition

AbstractAn account is given of the secondary consolidation characteristics of recent alluvial deposits under the line of the M5 motor-way where it crosses the Somerset levels. It uses a group of 161 long term settlement records between East Clevedon and St George which were maintained after contract completion in 1973 as the instrumentation installed during construction had .predicted continued settlement. The records were combined with a data file of soils information from the same area compiled by the first author in 1984. The key features of secondary consolidation are reviewed as a guide to the analysis of the records, which are examined for statistical relationships between the measured rates of secondary compression and the operative field variables namely, the embankment loading, the depth of consolidating material and its light preconsolidation. Because of the complex deposition sequence it was only found possible to follow trends. These showed that secondary consolidation was most sensitive to the loading relative to the preconsolidation, or thresh-hold pressure. They also gave some indication of decreasing overall rates of secondary strain with increasing thickness of deposit. Laboratory tests significantly underestimated the field rates of secondary consolidation in all cases. It was reckoned that persistent low level vibrations from heavy traffie contribute to the variations, affecting the shallower layers by a greater amount.

‘Sexual chemistry’ before the Pill: science, industry and chemical contraceptives, 1920–1960

2010 ◽  
Vol 44 (2) ◽  
pp. 245-274 ◽  
Author(s):  
ILANA LÖWY
Keyword(s):  
Pharmaceutical Industry ◽  
Laboratory Tests ◽  
Chemical Compounds ◽  
Non Profit ◽  
The Status ◽  
History Of ◽  
Marginal Status ◽  
Key Features ◽  
Pharmaceutical Laboratories

AbstractThe history of contraceptives met the history of drugs long before the invention of the contraceptive pill. In the first half of the twentieth century, numerous pharmaceutical laboratories, including major ones, manufactured and marketed chemical contraceptives: jellies, suppositories, creams, powders and foams applied locally to prevent conception. Efforts to put an end to the marginal status of these products and to transform them into ‘ethical’ drugs played an important role in the development of standardized laboratory tests of efficacy of contraceptive preparations; debates on the validity of such tests; evaluation of the long-term toxicity of chemical compounds; and the rise of collaborations between activists, non-profit organizations and the pharmaceutical industry. Chemical contraceptives were initially associated with quack medicine, shady commercial practices and doubtful morality. Striving to change the status of contraceptives and to promote safe and efficient products that reduced fertility in humans shaped some of the key features of the present-day production and regulation of pharmaceuticals.

41. Diffusion Badges as a Long-Term, Low-Level Method of Ambient Air Analysis

2005 ◽  
Author(s):  
K. Parker ◽  
S. Rose-Pehrsson ◽  
D. Kidwell
Keyword(s):  
Ambient Air ◽  
Air Analysis ◽  
Low Level ◽  
Level Method

Long-Term Unemployment in Poland in 2008-2012 - Tendencies, Structure and Selected Determinants

2013 ◽  
Vol 8 (4) ◽  
pp. 347-359
Author(s):  
Leszek Kucharski
Keyword(s):  
Secondary Education ◽  
Young People ◽  
Level Of Education ◽  
Low Level ◽  
Increased Risk

This study presents the structure and tendencies in long-term unemployment in Poland in the years 2008-2012. This study identifies the groups of people with an increased risk of long-term unemployment. The analyses produced the following conclusions. The groups with the highest risk of long-term unemployment include: singles, people aged of 55 and above and people with a low level of education. Young people with university and general secondary education faced the lowest risk of long-term unemployment. 

Case Evidence: Conflict Trajectories in Indonesia, Ivory Coast, and Syria

2018 ◽  
Author(s):  
Jaroslav Tir ◽  
Johannes Karreth
Keyword(s):  
Civil War ◽  
Ivory Coast ◽  
Armed Conflicts ◽  
East Timor ◽  
Intergovernmental Organizations ◽  
Crisis Resolution ◽  
Low Level ◽  
Qualitative Evidence ◽  
The Government

Two low-level armed conflicts, Indonesia’s East Timor and Ivory Coast’s post-2010 election crises, provide detailed qualitative evidence of highly structured intergovernmental organizations (IGOs) engaging in effective civil warpreventing activities in member-states. Highly structured IGOs threatened and sanctioned each of these states and offered (long-term) benefits conditional on successful crisis resolution. The governments were aware of and responded to these IGOs’ concerns, as did the rebels in these respective cases. The early stages of the conflict in Syria in 2011 provide a counterpoint. With Syria’s limited engagement in only few highly structured IGOs, the Syrian government ignored international calls for peace. And, without highly structured IGOs’ counterweight to curtail the government, the rebels saw little reason to stop their armed resistance. The result was a brutal and deadly civil war that continues today.

The Geography of Insight

2018 ◽  
Author(s):  
Richard Foley
Keyword(s):  
Collective Knowledge ◽  
Key Features

This book, based on a philosopher’s experiences as dean over almost two decades, argues it is appropriate for the sciences and humanities to have different aims and for the values informing their inquiries also to be different. It maintains there are four core differences: (1) it is proper for the sciences but not the humanities to seek insights not limited to particular locations, times, or things; (2) the sciences but not the humanities value findings as independent as possible of the perspectives of the inquirers; (3) the sciences should be wholly descriptive while the humanities can also be concerned with prescriptive claims, which give expression to values; and (4) the sciences are organized to increase collective knowledge, whereas in the humanities individual insight is highly valued independently of its ability to generate consensus. Associated with these differences are secondary distinctions: different attitudes about an endpoint of inquiry; different notions of intellectual progress; different roles for expertise; different assumptions about simplicity and complexity; and different approaches to issues associated with consciousness. Taken together these distinctions constitute an intellectual geography of the humanities and sciences: a mapping of key features of their epistemology. In addition, the book discusses the role of universities in an era attached to sound bites and immediately useful results, and the importance of there being a healthy culture of research for both the sciences and humanities, one that treasures long-term intellectual achievements and whose presiding value is that with respect to many issues it ought not to be easy to have opinions.

scholarly journals Vodnyi: a Long-term, Low-level Radiation Exposure Field Site in Russia

2003 ◽  
Vol 38 (4) ◽  
pp. 332-343 ◽  
Author(s):  
Anatoly I. TASKAEV ◽  
Edward R. LANDA ◽  
Denis V. GURYEV ◽  
Natalia GOLOVKO BUTLER ◽  
Thomas F. KRAEMER
Keyword(s):  
Radiation Exposure ◽  
Field Site ◽  
Low Level ◽  
Exposure Field

Repeated Occupational Exposure to Low-level Blast in the Canadian Armed Forces: Effects on Hearing, Balance, and Ataxia

2021 ◽  
Author(s):  
Ann Nakashima ◽  
Oshin Vartanian ◽  
Shawn G Rhind ◽  
Kristen King ◽  
Catherine Tenn ◽  
...  
Keyword(s):  
Hearing Loss ◽  
Occupational Exposure ◽  
Armed Forces ◽  
Cross Sectional ◽  
Low Level ◽  
Additional Information ◽  
Adverse Health Effects ◽  
Blast Overpressure ◽  
Blast Exposure

ABSTRACT Introduction Recently, there has been increasing concern about the adverse health effects of long-term occupational exposure to low-level blast in military personnel. Occupational blast exposure occurs routinely in garrison through use of armaments and controlled blast detonations. In the current study, we focused on a population of breaching instructors and range staff. Breaching is a tactical technique that is used to gain entry into closed spaces, often through the use of explosives. Materials and Methods Initial measurements of blast overpressure collected during breaching courses found that up to 10% of the blasts for range staff and up to 32% of the blasts for instructors exceeded the recommended 3 psi exposure limit. Using a cross-sectional design, we used tests of balance, ataxia, and hearing to compare a sample of breachers (n = 19) to age-and sex-matched military controls (n = 19). Results There were no significant differences between the two groups on the balance and ataxia tests, although the average scores of both groups were lower than would be expected in a normative population. The prevalence of hearing loss was low in the breacher group (4 of 19), and hearing thresholds were not significantly different from the controls. However, the prevalence of self-reported tinnitus was significantly higher in the breacher group (12 of 19) compared with the controls (4 of 19), and all breachers who were identified as having hearing loss also reported tinnitus. Conclusions Our results suggest that basic tests of balance, ataxia, and hearing on their own were not sensitive to the effects of long-term occupational exposure to low-level blast. Some of the blast exposure levels exceeded limits, and there was a significant association of exposure with tinnitus. Future studies should supplement with additional information including exposure history and functional hearing assessments. These findings should be considered in the design of future acute and longitudinal studies of low-level blast exposure.

scholarly journals Classifying the Biological Status of Honeybee Workers Using Gas Sensors

Sensors ◽  
2020 ◽  
Vol 21 (1) ◽  
pp. 166
Author(s):  
Jakub T. Wilk ◽  
Beata Bąk ◽  
Piotr Artiemjew ◽  
Jerzy Wilde ◽  
Maciej Siuda
Keyword(s):  
Gas Sensors ◽  
Laboratory Tests ◽  
Test Chamber ◽  
Ambient Air ◽  
True Positive Rate ◽  
True Positive ◽  
Positive Rate ◽  
Parameters Of Accuracy ◽  
Selection Of

Honeybee workers have a specific smell depending on the age of workers and the biological status of the colony. Laboratory tests were carried out at the Department of Apiculture at UWM Olsztyn, using gas sensors installed in two twin prototype multi-sensor detectors. The study aimed to compare the responses of sensors to the odor of old worker bees (3–6 weeks old), young ones (0–1 days old), and those from long-term queenless colonies. From the experimental colonies, 10 samples of 100 workers were taken for each group and placed successively in the research chambers for the duration of the study. Old workers came from outer nest combs, young workers from hatching out brood in an incubator, and laying worker bees from long-term queenless colonies from brood combs (with laying worker bee’s eggs, humped brood, and drones). Each probe was measured for 10 min, and then immediately for another 10 min ambient air was given to regenerate sensors. The results were analyzed using 10 different classifiers. Research has shown that the devices can distinguish between the biological status of bees. The effectiveness of distinguishing between classes, determined by the parameters of accuracy balanced and true positive rate, of 0.763 and 0.742 in the case of the best euclidean.1nn classifier, may be satisfactory in the context of practical beekeeping. Depending on the environment accompanying the tested objects (a type of insert in the test chamber), the introduction of other classifiers as well as baseline correction methods may be considered, while the selection of the appropriate classifier for the task may be of great importance for the effectiveness of the classification.

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