scholarly journals Continental Transmission of Emerging COVID-19 on the 38o North Latitude

2021 ◽  
Author(s):  
Mei-Sheng Ku ◽  
Li-Min Huang ◽  
Sherry Yueh-Hsia Chiu ◽  
Wei-Chun Wang ◽  
Ya-Chung Jeng ◽  
...  
Keyword(s):  
North Latitude

THE POPLAR-AND-WILLOW BORER, STERNOCHETUS (= CRYPTORHYNCHUS) LAPATHI (COLEOPTERA: CURCULIONIDAE), IN BRITISH COLUMBIA

1967 ◽  
Vol 99 (4) ◽  
pp. 411-418 ◽  
Author(s):  
John W. E. Harris ◽  
Harry C. Coppel
Keyword(s):  
British Columbia ◽  
Life Cycle ◽  
Larval Mortality ◽  
Vancouver Island ◽  
Water Emulsion ◽  
Early Instar ◽  
Preferred Hosts ◽  
North Latitude

AbstractA study was made of the poplar-and-willow borer, Sternochetus (= Cryptorhynchus) lapathi (L.) (Coleoptera: Curculionidae), in British Columbia between 1959 and 1964. The borer occurred principally south of 52 degrees north latitude. Willows were the preferred hosts. Ornamentals, hybrids in commercial plantings, and natural growing trees were attacked. The life cycle of the insect on southern Vancouver Island lasted up to 3 years; overwintering took place in early instar and adult stages. Eggs were laid in the bark; larvae mined first in the bark and then in the wood, where pupation took place. Few parasites and predators were found. DDT, dieldrin, and BHC killed adults; lindane (0.5% water emulsion), applied in the spring, caused larval mortality up to 96%.

scholarly journals PERFORMANCE OP SAND-FILLED TUBE SHORE PROTECTION TUKTOYAKTUK, NORTH WEST TERRITORIES, CANADA

1982 ◽  
Vol 1 (18) ◽  
pp. 114
Author(s):  
V.K. Shah
Keyword(s):  
Large Majority ◽  
Natural Stone ◽  
Alternative Form ◽  
Shore Protection ◽  
Experimental Basis ◽  
North West ◽  
Western Arctic ◽  
Arctic Coast ◽  
North West Territories ◽  
North Latitude

Seawalls, revetments and groynes designed to protect shorelines require normally timber, natural stone or concrete for their construction. In Tuktoyaktuk, none of these materials is available and to avoid excessive costs, an alternative form of construction, using long sausage shaped tubes filled with sand, was devised on an experimental basis. Tuktoyaktuk is situated on the eastern side of Kugmallit Bay in the Western Arctic at north latitude of 69 deg. 27' and west longitude of 133 deg. 02'. It is approximately 90 miles north of Inuvik and 1450 miles northwest of Edmonton (figure 1). The area is mainly comprised of a long, narrow, boot-shaped peninsula oriented in approximately north-south direction, a complex lagoon, which has been developed as a harbour, east of the peninsula and an island straddling the mouth of the lagoon (figure 2). Certain dwellings exist at the southern and southeasterly shores of Tuktoyaktuk Harbour. A large majority of the inhabitants reside in settlements developed on the peninsula and the southern area linking the peninsula with the mainland. Tuktoyaktuk is used as a transfer point linking the Mackenzie River barge transport with coastwide shipping serving the western arctic seaboard and inland settlements and bases. As a result of this the TCJK settlement has grown to be the largest of the western arctic coast settlements.

scholarly journals First record of Schulmanela petruschewskii Shulman, 1948 (Nematoda: Capillariidae) from cultured Rainbow trout (Oncorhynchus mykiss) in Turkey

2010 ◽  
Vol 47 (4) ◽  
pp. 273-275
Author(s):  
Z. Pekmezci ◽  
S. Umur
Keyword(s):  
Rainbow Trout ◽  
Oncorhynchus Mykiss ◽  
New Record ◽  
Parasite Species ◽  
Liver Parenchyma ◽  
First Record ◽  
Parasite Fauna ◽  
Rainbow Trout Oncorhynchus Mykiss ◽  
First Time ◽  
North Latitude

AbstractThe nematode Schulmanela petruschewskii (Shulman, 1948) was identified during the parasitological examination on the liver parenchyma in one specimens of a cultured rainbow trout (Oncorhynchus mykiss) which reared in Derbent Dam Lake in Samsun, Turkey (41°25′6′’ North latitude, 35°49′52′’ East longitude) in August 2008. This parasite species was not previously reported from Turkey. With the present study we report S. petruschewskii for the first time in Turkey. This specimen which is a parasite of cultured rainbow trout (Oncorhynchus mykiss) is a new record for the Turkish parasite fauna. Original measurements and figures are presented.

Siting, design and operational controls for snow disposal sites

2003 ◽  
Vol 48 (9) ◽  
pp. 81-92
Author(s):  
S.R. Wheaton ◽  
W.J. Rice
Keyword(s):  
Traffic Safety ◽  
Disposal Site ◽  
Urban Streets ◽  
Order Of Magnitude ◽  
Site Design ◽  
Spring Temperatures ◽  
Operational Criteria ◽  
North Latitude

The Municipality of Anchorage (MOA), at 61° north latitude, ploughs and hauls snow from urban streets throughout the winter, incorporating grit and chloride applied to street surfaces for traffic safety. Hauled snow is stored at snow disposal facilities, where it melts at ambient spring temperatures. MOA studies performed from 1998 through 2001 show that disposal site melt processes can be manipulated, through site design and operation practices, to control chloride and turbidity in meltwater. An experimental passive “V-swale” pad configuration tested by MOA investigators reduced site meltwater turbidity by an order of magnitude (to about 50 NTU from the 500 NTU typical of more conventional planar pad geometry). The MOA has developed new siting, design and operational criteria for snow disposal facilities to conform to the tested V-swale pad configuration.

scholarly journals Five salmon dinners per week were not sufficient to prevent the reduction in serum vitamin D in autumn at 60° north latitude: a randomised trial

2019 ◽  
Vol 123 (4) ◽  
pp. 419-427 ◽  
Author(s):  
Marianne Bratlie ◽  
Ingrid V. Hagen ◽  
Anita Helland ◽  
Øivind Midttun ◽  
Arve Ulvik ◽  
...  
Keyword(s):  
Vitamin D ◽  
Fish Intake ◽  
Control Group ◽  
Serum Concentrations ◽  
Hydroxyvitamin D ◽  
Western Norway ◽  
Increased Risk ◽  
25 Hydroxyvitamin D ◽  
High Fish ◽  
North Latitude

AbstractLow serum concentrations of several vitamins have been linked to increased risk of diseases including insulin resistance and type 2 diabetes (T2D). Fish is a good source of several vitamins, and the prevalence of T2D is low in populations with high fish intake. The aim of the present study was to investigate the effects of high fish intake on vitamins in serum from adults in autumn in South-Western Norway at 60° north latitude. In this randomised clinical trial, sixty-three healthy participants with overweight/obesity consumed 750 g/week of either cod (n 22) or salmon (n 22) as five weekly dinners or were instructed to continue their normal eating habits but avoid fish intake (Control group, n 19) for 8 weeks. The estimated vitamin D intake was significantly increased in the Salmon group when compared with the Cod group (P = 6·3 × 10−4) and with the Control group (P = 3·5 × 10−6), with no differences between groups for estimated intake of vitamins A, B1, B2, B3, B6, B9, C and E. Serum 25-hydroxyvitamin D3 concentration was decreased in all groups after 8 weeks; however, the reduction in the Salmon group was significantly smaller compared with the Cod group (P = 0·013) and the Control group (P = 0·0060). Cod and salmon intake did not affect serum concentrations of the other measured vitamins. The findings suggest that 750 g/week of salmon was not sufficient to prevent a decrease in serum 25-hydroxyvitamin D3 in autumn in South-Western Norway in adults with overweight/obesity.

scholarly journals Temporal (1948–2012) and Dynamic Evolution of the Wouri Estuary Coastline within the Gulf of Guinea

2019 ◽  
Vol 7 (10) ◽  
pp. 343 ◽  
Author(s):  
Fotsi ◽  
Pouvreau ◽  
Brenon ◽  
Onguene ◽  
Etame
Keyword(s):  
Morphological Evolution ◽  
Atlantic Coast ◽  
Anthropogenic Pressure ◽  
Gulf Of Guinea ◽  
Time Intervals ◽  
Surveillance Activity ◽  
Sediment Loss ◽  
Downstream Section ◽  
Analysis System ◽  
North Latitude

The Wouri estuary is located in the Gulf of Guinea on the Atlantic coast of Cameroon’s coastline plain (3°49′ and 4°04′ north latitude and 9°20′ to 9°40′ east longitude), and is strongly influenced by coastal dynamics that have remained unquantified over a long period of time. This study analyzed the historical evolution of the Wouri estuarine coastline between 1948 and 2012. Variations in the estuarine evolution of the Wouri were studied from (i) minute topographic extracts from 1948, (ii) 1996–1999 nautical charts, and (iii) 2012 spatial map vectors. The net temporal spatial variation rates were calculated using the statistical methods of the Digital Shoreline Analysis System (DSAS). These change rates were also calculated over two time intervals (1948–1996 and 1996–2012) and over a 64-year period (1948–2012). The study reveals highly disparate results. Indeed, kinematics show that the Wouri estuary was dominated by erosion in its downstream section, with 262.83 ha for –3.2 m/year and 110.56 ha for –5.8 m/year between 1948–1996 and 1996–2012 respectively, and by accretion on the other hand in its upstream section, with 239.17 ha for 4.3 m/year in zone 5 between 1948–1996 and 150.82 ha for 12.6 m/year in zone 4 between 1996–2012. Thus, over the 64-year period (1948–2012), we have a dominance of variation by erosion downstream and conversely by accretion upstream, marked by the presence of amplifying factors (anthropogenic pressure and climate change) of the rate of variation of morphological evolution at the beginning of the 21st century, as compared to the middle-20th century. The observed development of sediment loss and accumulation, both influences and will influence, the sediment regime along the Wouri estuarine coastline. There is a need to develop a systematic sub-regional coastal surveillance activity to effectively manage Cameroon’s coastline system.

Feasibility of using renewable energy to supply data centers in 60°north latitude

2018 ◽  
Vol 17 ◽  
pp. 96-106 ◽  
Author(s):  
Enida Sheme ◽  
Simon Holmbacka ◽  
Sébastien Lafond ◽  
Dražen Lučanin ◽  
Neki Frashëri
Keyword(s):  
Renewable Energy ◽  
Data Centers ◽  
North Latitude

Study on China’s Debris Flow Distribution and Occurrence Trend

2012 ◽  
Vol 204-208 ◽  
pp. 3345-3350
Author(s):  
Na He ◽  
N.Sh Chen
Keyword(s):  
Debris Flow ◽  
Flow Distribution ◽  
Material Structure ◽  
Monsoon Circulation ◽  
Subtropical Climate ◽  
Clastic Sediment ◽  
Disaster Data ◽  
Before And After ◽  
Debris Flow Disaster ◽  
North Latitude

Debris flow disaster occurred frequently, at the same time it covered a wide area in China. Through statistics analyzing debris flow disaster data from 1914 to 1999, obtain that debris flow hazards mainly distributed in the east longitude 100-110°, 25-30°north latitude and 30-35°north latitude in China. This region is mainly affected by subtropical climate and central Asia humid tropical monsoon climate, such climate have little rainfall in winter but intense rainfall in summer, due to the complex topography and different monsoon circulation, the frequency of debris flow occurrence in this area is much higher than other areas. After the earthquake in May 12, 2008, the slope material structure are destroyed which in turn provide adequate loose clastic-sediment for debris flow to initiate, several years later the loose clastic-sediment may reconsolidate again and reach new balance. Compare the frequency and scale of debris flow before and after the earthquake, know that after earthquake the frequency and scale of debris flow are much serious than the events occurred before earthquake, then gradually tend to stable. Based on these phenomena could predict the scale and trend in the future, at the same time it could provide reference for debris flow prevention and reduction, and then reduce the loss that caused by debris flow hazards.

Compatibility Evaluation of BZ25-1 Crude Oils in Bohai Bay, China

2007 ◽  
Author(s):  
Jiaqiang Jing ◽  
Hongbin Niu ◽  
Lingbin Pan ◽  
Xiaoqin Xiong ◽  
Liwen Tan
Keyword(s):  
Crude Oil ◽  
Flow Behavior ◽  
Single Point ◽  
Production Optimization ◽  
Crude Oils ◽  
Bohai Bay ◽  
Major Objective ◽  
Offshore Production ◽  
Oil Mixtures ◽  
North Latitude

BZ25-1 oilfield is located in the southeast of Bohai bay which geographically lies between 119°00′ to 119°15′ east longitude and 38°10′ to 38°20′ north latitude. It has two oil blocks, including Shahejie (SHJ) waxy oil and Minghuazhen (MHZ) heavy oil, with six wellhead platforms WHPA∼WHPF and six submarine pipelines. Therein, the WHPC-WHPB and WHPB-SPM (Single Point Mooring) pipelines transport the mixture of the two produced crude oils. However, the mixing of the two oils will certainly bring out a change in their components and properties, which directly affects the safe operation of the submarine pipelines and offshore production facilities. Therefore, this paper compounds three kinds of MHZ/SHJ mixed oils with blending ratios of 1:1, 3:1 and 9:1, mainly studies how the components, rheological and thermophysical properties of the oil mixtures change with the blending ratio. The major objective of this study is to evaluate the compatibility of the two crude oils and provide a theoretical basis for the production optimization and risk elusion of the oilfield. The results of the study show that the components and properties of SHJ crude oil are quite different from those of MHZ oil, the flow behavior of SHJ oil is more sensitive to temperature. As MHZ oil in the compounds increases, the contents of asphaltene, resin, sulfur and carbon residue will increase except wax contents, their viscosities, densities and flash points will also increase, but their pour points, yield stresses, calorific values and other major thermophysical parameters will decrease. A blending ratio of 2∼7:1 for MHZ to SHJ crude oil can be concluded to make the properties of the compounds meet the safe and economic requirements of the subsea pipeline and offshore facility operations and ensure the compatibility of the mixed oils. In actuality, the field operations have confirmed that the recommended blending ratio is reasonable and practicable.

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