scholarly journals Morphology of various strains of the trypanosome causing disease in man in Nyasaland.—The mzimba strain

1913 ◽  
Vol 87 (592) ◽  
pp. 26-35 ◽  
Keyword(s):  
Central Africa ◽  
Medical Officer ◽  
Sleeping Sickness ◽  
Separate Species ◽  
North East ◽  
The North ◽  
Western Shore ◽  
Trade Route ◽  
Almost All ◽  
North And South

Up to the present time it has usually been considered that almost all the cases of Human trypanosome disease in man in Nyasaland have been confined to a small area. This, the so-called Sleeping-Sickness District, has been described in a former paper, but it may be repeated here that it is the part of the “fly-country” lying along the western shore of Lake Nyasa, between S. lat. 13° 20' and 13° 50', and extending some twenty miles inland. Through the centre of this area a road runs from Domira Bay on the Lake into North-East Rhodesia. This road, until lately, was a principal highway between the coast and Central Africa. Dr. Aylmer May, the Principal Medical Officer of North-East Rhodesia, who lately visited Kasu, informed the Commission that it was along this trade-route that all the North-East Rhodesian, cases of Human trypanosome disease have occurred. It is said that some 25,000 native porters passed along this road every year, and as they entered a Glossina palpalis area at the Congo end of their journey, it seemed at first natural to suspect that the disease was true Sleeping Sickness, and had spread from west to east along this trade-route. This suspicion was shown to be groundless by the discovery that the parasite causing the disease in North-East Rhodesia and Nyasaland is not Trypanosoma gambiense , but a distinct and separate species giving rise to a totally different disease. The question then arose as to whether this was an imported or indigenous disease. It has, therefore, been one of the objects of this Commission to determine whether the trypanosome causing Human trypanosome disease in Nyasaland is restricted to the game and “fly” of the Proclaimed Area, or if it extends to the north and south along the “fly-belt.” If it is found to extend over all the “fly-area” in Nyasaland, then the disease is probably native to the soil and not an importation from Tanganyika or the Congo. But it will be well at this point to lay down definitely the various opinions or theories at issue. These are three in number.

Potential Distribution of Fall Armyworm in Africa and Beyond, Considering Climate Change and Irrigation Patterns

2021 ◽  
Author(s):  
Bipana Paudel Timilsena ◽  
Saliou Niassy ◽  
Emily Kimathi ◽  
Elfatih. M. Abdel-Rahman ◽  
Irmgard Seidl-Adams ◽  
...  
Keyword(s):  
Central Africa ◽  
Fall Armyworm ◽  
Large Area ◽  
Western Africa ◽  
The North ◽  
Management Interventions ◽  
Population Establishment ◽  
Almost All ◽  
North And South ◽  
Irrigation Patterns

Abstract The fall armyworm, Spodoptera frugiperda (FAW), first invaded Africa in 2016 and has since become established in many areas across the continent where it poses a serious threat to food and nutrition security. We re-parameterized the existing CLIMEX model to assess the FAW global invasion threat, emphasizing the risk of transient and permanent population establishment in Africa under current and predicted future climates, considering irrigation patterns. FAW can establish itself in almost all countries in eastern and central Africa and a large part of western Africa under the current climate. Climatic barriers, such as heat and dry stresses, may limit the spread of FAW to North and South Africa. Future predictions suggest that FAW invasive range will retract from both northern and southern regions towards the equator. However, a large area in eastern and central Africa is predicted to have an optimal climate for FAW persistence. These areas will serve as FAW ‘hotspots’ from where it may migrate to the north and south during winter seasons and then pose an economic threat. Our projections can be used to identify countries at risk for permanent and transient FAW-population establishment and inform timely integrated pest management interventions under present and future climate in Africa.

scholarly journals Potential distribution of fall armyworm in Africa and beyond, considering climate change and irrigation patterns

2022 ◽  
Vol 12 (1) ◽  
Author(s):  
Bipana Paudel Timilsena ◽  
Saliou Niassy ◽  
Emily Kimathi ◽  
Elfatih M. Abdel-Rahman ◽  
Irmgard Seidl-Adams ◽  
...  
Keyword(s):  
Central Africa ◽  
Fall Armyworm ◽  
Large Area ◽  
Western Africa ◽  
The North ◽  
Management Interventions ◽  
Population Establishment ◽  
Almost All ◽  
North And South ◽  
Irrigation Patterns

AbstractThe fall armyworm, Spodoptera frugiperda (FAW), first invaded Africa in 2016 and has since become established in many areas across the continent where it poses a serious threat to food and nutrition security. We re-parameterized the existing CLIMEX model to assess the FAW global invasion threat, emphasizing the risk of transient and permanent population establishment in Africa under current and projected future climates, considering irrigation patterns. FAW can establish itself in almost all countries in eastern and central Africa and a large part of western Africa under the current climate. Climatic barriers, such as heat and dry stresses, may limit the spread of FAW to North and South Africa. Future projections suggest that FAW invasive range will retract from both northern and southern regions towards the equator. However, a large area in eastern and central Africa is projected to have an optimal climate for FAW persistence. These areas will serve as FAW ‘hotspots’ from where it may migrate to the north and south during favorable seasons and then pose an economic threat. Our projections can be used to identify countries at risk for permanent and transient FAW-population establishment and inform timely integrated pest management interventions under present and future climate in Africa.

scholarly journals I.—Antiquarian Researches in Illyricum, III, and IV

Archaeologia ◽  
1885 ◽  
Vol 49 (01) ◽  
pp. 1-168 ◽  
Author(s):  
Arthur John Evans
Keyword(s):  
Middle Ages ◽  
Administrative District ◽  
North East ◽  
The North ◽  
East Region ◽  
Parallel Lines ◽  
North And South ◽  
Uncertain Boundary ◽  
The Middle Ages

Hitherto we have been concerned with the Dalmatian coast-cities and the great parallel lines of road that traversed the length of the Province from the borders of Pannonia and Italy to those of Epirus. From Salonæ there were, in addition to these highways to the North and South, at least two main-lines of Roman Way that traversed the interior ranges of the Dinaric Alps and led to the Mœsian and Dardanian borders that lay to the East and South-East. Milliary columns have been found at Salonæ, one recording the completion by Tiberius' Legate Dolabella of a line of road leading from the Colony of Salonæ to a mountain stronghold of the Ditiones—an Illyrian clan probably inhabiting what is now the North-East region of Bosnia; another, also of Tiberius' time, referring to the construction of a line, 156 miles in extent, from Salonæ to aCastellumof the Dæsitiates, an Illyrian clan belonging to theConventusor administrative district of Narona, and whose stronghold, according to the mileage given, must be sought somewhere on the Upper Drina, towards the Moesian and Dalmatian confines. This latter line may very well be that represented in theTabula Peutingerianaas leading from Salonæ to Argentaria, a name which seems to connect itself with the silver-bearing ranges lying on the uncertain boundary of the ancient Dalmatia and Dardania, and which, from its mineral riches, was still known in the Middle Ages asMonte Argentaro.

Information about Antimalarial Chemoprophylaxis in Hospitalised Patients — Is it Adequate?

1997 ◽  
Vol 42 (1) ◽  
pp. 13-15 ◽  
Author(s):  
D. Nathwani ◽  
J Spiteri
Keyword(s):  
Public Health ◽  
Plasmodium Falciparum ◽  
East Coast ◽  
Central Africa ◽  
Public Health Problem ◽  
Oil Boom ◽  
North East ◽  
The North ◽  
Hospitalised Patients ◽  
The Uk

Malaria remains a huge public health problem worldwide, with over 100 million new cases annually, causing one to two million deaths.1 This global problem spills over into the UK, with around 2000 cases of reported annually.2 The proportion of infections due to Plasmodium falciparum (PF) continues to increase and worse still accounts for five to 12 deaths per year. In 1992, Nathwani et al reported the 10 year experience of malaria cases admitted to the Regional Infection Unit, in Aberdeen, Scotland-the “Oil Capital”.3 This study was of interest in that 46% of those British residents who acquired infection had travelled to West or Central Africa on oil related business. The Oil boom of the 1980‘ s appeared to very much centred around Aberdeen and the neighbouring hinterland but did not appear to extend to Dundee which was only 60 miles further down the North-East coast. We, therefore, carried out a retrospective study of patients with malaria admitted to the Regional Infectious Diseases Unit in Dundee over a fifteen year period between 1980 and 1994.

scholarly journals The Flare and Warp of the Young Stellar Disk Traced with LAMOST DR5 OB-type Stars

2021 ◽  
Vol 922 (1) ◽  
pp. 80
Author(s):  
Yang Yu ◽  
Hai-Feng Wang ◽  
Wen-Yuan Cui ◽  
Lin-Lin Li ◽  
Chao Liu ◽  
...  
Keyword(s):  
Galactic Plane ◽  
Scale Height ◽  
Stellar Disk ◽  
Spatial Density ◽  
Galactocentric Distance ◽  
Secular Evolution ◽  
The North ◽  
Red Giant ◽  
Almost All ◽  
North And South

Abstract We present an analysis of the spatial density structure for the outer disk from 8–14 kpc with the LAMOST DR5 13,534 OB-type stars and observe similar flaring on the north and south sides of the disk, implying that the flaring structure is symmetrical about the Galactic plane, for which the scale height at different Galactocentric distances is from 0.14 to 0.5 kpc. By using the average slope to characterize the flaring strength, we find that the thickness of the OB stellar disk is similar but that flaring is slightly stronger compared to the thin disk as traced by red giant branch stars, possibly implying that secular evolution is not the main contributor to the flaring but rather perturbation scenarios such as interactions with passing dwarf galaxies could be possible. When comparing the scale height of the OB stellar disk on the north and south sides with the gas disk, the former one is slightly thicker than the latter one by ≈33 and 9 pc, meaning that one could tentatively use young OB-type stars to trace the gas properties. Meanwhile, we determine that the radial scale length of the young OB stellar disk is 1.17 ± 0.05 kpc, which is shorter than that of the gas disk, confirming that the gas disk is more extended than the stellar disk. What is more, by considering the midplane displacements (Z 0) in our density model we find that almost all values of Z 0 are within 100 pc, with an increasing trend as Galactocentric distance increases.

scholarly journals Geographical distribution, habitats and modern state of Carlina cirsioides (Asteraceae) populations

2021 ◽  
Vol 29 (1) ◽  
pp. 17-27
Author(s):  
V. I. Melnyk ◽  
I. O. Kovalchuk ◽  
L. I. Dovhopola ◽  
Y. P. Shapran
Keyword(s):  
Central Europe ◽  
Floristic Composition ◽  
Systematic Position ◽  
Modern State ◽  
Separate Species ◽  
North East ◽  
The North ◽  
Herbaceous Communities ◽  
Steppe Communities ◽  
Relic Species

The study of the current state and habitats of rare and threatened species of plants is a relevant task of ecological research. The paper presents the results of the study of systematic position, habitats and modern state of populations of a rare species included in the Red DataBook of Ukraine Carlina cirsioides Klokov (=C. acaulis L.). Carlina cirsioides is well-known to European phytosozologists as an endemic and relic species of the Flora of Ukraine. At the same time, the species independence of this taxon is not recognized by the authors of monographs on the Carlina genus and by the authors of “Flora Europaea”. Comparative morphological, chorological and ecological-coenotic analyses do not give sufficient reasons to consider C. cirsioides described by Klokov as a separate species, endemic and relic species of the Flora of Ukraine. According to the morphological traits, the specimens from the lowland part of Ukraine belong to the C. acaulis caulescens subspecies, which is distributed mostly in the lowlaand regions of Europe. Ecological-coenotic conditions of habitats of C. acaulis in the plains of Ukraine are different from those in the mountain regions and are close to the plains habitats of this species in Central Europe. Steppe communities of class Festuco-Brometea, of which C. acaulis is component in the plains part of Ukraine, are close to xerothermic herbaceous communities of Central Europe; forest communities of Erico-Pinetea with C. cirsioides in Ukrainian Polissia and the North-East Poland are very сlose by floristic composition. The removal of separate species status of the plains populations of C. acaulis near the eastern border of the range does not at all downplay its sozological significance. Taking into account the low number of C. acaulis in the Volhynian-Podolian Upland and in the Polesian Lowland, all localities of this species in the lowland part of the range in Ukraine must be taken under protection in situ.

scholarly journals Les pêches de l’URSS dans l’Atlantique du Nord-Est et l’élargissement des zones de pêche exclusive

2005 ◽  
Vol 18 (1) ◽  
pp. 107-126
Author(s):  
François Carré
Keyword(s):  
Barents Sea ◽  
East Atlantic ◽  
North East ◽  
The North ◽  
The Barents Sea ◽  
Average Production ◽  
Capelin Mallotus Villosus ◽  
Access Rights ◽  
The Baltic ◽  
Almost All

After the last war, the USSR set it self to increase the development of its ocean fisheries from its two North-East Atlantic seaboards on the Barents Sea and the Baltic. With a modernized fleet and almost complete freedom on the seas, its catch increased six fold between 1950 and 1976, going from 0,4 to 2,5 million tons per year, and Soviet fishermen could be found roaming on all the seas bordering Europe. However, as from 1977, this expansion was fiercely curtailed when coastal nations, including the USSR, established the 200-mile exclusive economic zone (EEZ) or mere exclusive fishing zone (EFZ), each being alloted almost all of its living resource s. More fishing grounds were lost by the USSR than gained, to the point where production suddenly fell in 1977 and it had to turn to fish of lesser quality, often used for industrial purposes, such as the Capelin (Mallotus villosus) and the blue Whiting (Micromesistius poutassou) which today make up to 60 % of all its catch off Northern Europe. The Soviet authorities reacted with flexibility and diversity, namely by increased fishing in the national exclusive zone, particularly in the Barents Sea, through negotiations leading to access rights to foreign waters, particularly those of Norway and the Faeroe Islands, and through a policy whereby it could purchase unprocessed fish from some members of the EEC. Thus Russian factory ships came to the British coasts to process mackerel delivered to them at sea by English and Scottish fishermen. It is through such a strategy of diversification, various examples of which may be found around the world, that the Soviets have succeeded in regaining grounds lost in 1977 and in reaching an average production of 1,7 million tons from 1977 to 1983 in the North-East Atlantic, this being 3 to 4 % less than that of 1970-76, notwithstanding the few purchases of fish made directly at sea.

Evaluating the Transfer of Care from Psychiatric Hospitals to District-Based Services

1993 ◽  
Vol 162 (S19) ◽  
pp. 6-6 ◽  
Author(s):  
Julian Leff
Keyword(s):  
Inner City ◽  
Large Scale ◽  
Medical Officer ◽  
Psychiatric Hospitals ◽  
The United States ◽  
Regional Health ◽  
North East ◽  
The North ◽  
Steady Rate ◽  
Regional Medical

In July 1983 the Regional Medical Officer of the North East Thames Regional Health Authority (NETRHA) appeared on television to announce the closure of Claybury Hospital and much of Friern Hospital over a ten-year period.When NETRHA announced its decision, the policy to be pursued was innovative because it involved psychiatric hospitals serving inner-city populations, and because there was apparently no intention to achieve its aim by decanting patients into other psychiatric hospitals, as had been done with the closures of St Wulstan's and Banstead Hospitals. Although the run-down of psychiatric hospitals had been occurring at a steady rate in the United States and in England and Wales since the early 1950s, there had been few attempts to evaluate the policy, and none had been in any sense comprehensive (this supplement, paper 7). Clinicians and research workers in the field of social psychiatry were well aware of the need for large-scale evaluative studies, since protagonists and opponents of the policy of deinstitutionalisation were locked in a polemical argument which was pursued with increasing stridency through lack of reliable information.

Frozen Rivers and Fault Lines

2013 ◽  
Author(s):  
Mike Searle
Keyword(s):  
Western Himalaya ◽  
Mountain Range ◽  
The Road ◽  
North East ◽  
The North ◽  
Golden Eagles ◽  
Trade Route ◽  
Winter Time ◽  
The Himalaya ◽  
North Western

After seven summer field seasons working in the north-western Himalaya in India, I had heard of a winter trade route that must rank as one of the most outlandish journeys in the Himalaya. The largely Buddhist Kingdoms of Ladakh and Zanskar are high, arid, mountainous lands to the north of the Greater Himalayan Range and in the rain shadow of the summer monsoon. Whereas the southern slopes of the Himalaya range from dense sub-tropical jungles and bamboo forests to rhododendron woods and magnificent alpine pastures carpeted in spring flowers, the barren icy lands to the north are the realm of the snow leopard, the yak, and the golden eagles and lammergeier vultures that soar overhead. The Zanskar Valley lies immediately north-east of the 6–7,000-metre-high peaks of the Himalayan crest and has about thirty permanent settlements, including about ten Buddhist monasteries. I had seen the Zanskar Ranges from the summit of White Sail in Kulu and later spent four summer seasons mapping the geology along the main trekking routes. In summer, trekking routes cross the Himalaya westwards to Kashmir, southwards to Himachal Pradesh, and northwards to Leh, the ancient capital of Ladakh. Winter snows close the Zanskar Valley from the outside world for up to six months a year when temperatures plummet to minus 38oC. Central Zanskar is a large blank on the map, virtually inaccessible, with steepsided jagged limestone mountains and deep canyons. The Zanskar River carves a fantastic gorge through this mountain range and for only a few weeks in the middle of winter the river freezes. The Chaddur, the walk along the frozen Zanskar River, takes about ten to twelve days from Zanskar to the Indus Valley and, in winter time, was the only way in or out before the road to Kargil was constructed. I mentioned this winter trek to Ben Stephenson during our summer fieldwork in Kishtwar and he stopped suddenly, turned around, and said ‘Mike we just have to do this trek!’ So the idea of a winter journey into Zanskar was born, and four of us set off from Oxford in January 1995.

scholarly journals Inventory and Distribution of Rock Glaciers in Northeastern Yakutia

Land ◽  
2020 ◽  
Vol 9 (10) ◽  
pp. 384
Author(s):  
Vasylii Lytkin
Keyword(s):  
Arid Regions ◽  
Remote Sensing Data ◽  
Field Studies ◽  
Optimal Conditions ◽  
North East ◽  
The North ◽  
Rock Glaciers ◽  
Detailed List ◽  
First Time ◽  
North And South

Rock glaciers are common forms of relief of the periglacial belt of many mountain structures in the world. They are potential sources of water in arid and semi-arid regions, and therefore their analysis is important in assessing water reserves. Mountain structures in the north-east of Yakutia have optimal conditions for the formation of rock glaciers, but they have not yet been studied in this regard. In this article, for the first time, we present a detailed list of rock glaciers in this region. Based on geoinformation mapping using remote sensing data and field studies within the Chersky, Verkhoyansk, Momsky and Suntar-Khayata ranges, 4503 rock glaciers with a total area of 224.6 km2 were discovered. They are located within absolute altitudes, from 503 to 2496 m. Their average minimum altitude was at 1456 m above sea level, and the maximum at 1527 m. Most of these formations are located on the sides of the trough valleys, and form extended sloping types of rock glaciers. An assessment of the exposure of the slopes where the rock glaciers are located showed that most of the rock glaciers are facing north and south.

Sign in / Sign up

Export Citation Format

Share Document