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  • 1
    Electronic Resource
    Electronic Resource
    Factors affecting dormancy and germination of seeds of Eichhornia crassipes (Mart.) Solms from the Nile (1976)
    Oxford, UK : Blackwell Publishing Ltd
    Weed research 16 (1976), S. 0 
    Details
    ISSN: 1365-3180
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: E. crassopes requires specific conditions for germination. The best laboratory germination was in clay soil, rich in organic matter, under less than 3 cm depth of water, in light. There are interactions with water depths, soil type, organic deposits, light and temperature.Storage conditions of seeds before germination affect the results. Wetting, drying and re-wetting gave quickest, and complete germination. After 2 years dry-storage, 78% of the seeds were still viable.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-3180.1976.tb00383.x
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  • 2
    Electronic Resource
    Electronic Resource
    Sexual reproduction of Eichhornia crassipes (Mart.) Solms in the Nile (1975)
    Oxford, UK : Blackwell Publishing Ltd
    Weed research 15 (1975), S. 0 
    Details
    ISSN: 1365-3180
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: In a study of some of the factors that are believed to affect fruit-setting in Eichhornia crassipes under Sudan conditions, the average number of flowers per inflorescence was twelve (range 4–26) while the average number of capsules per inflorescence was 1·5 (range 0–16). The problem of low fruit-setting was suggested to be basically due to the ecological factor of high temperature and low relative humidity.The flowers were preponderantly meso-stylic with the long and short-stylic ‘races’ absent or very rare.Recherches stir la biologic d'Eichhornia crassipes (Mart.) Solms dans le NilDans une étude sur quelques-uns des facteurs que l'on suppose actifs sur la mise à fruits de l’Eichhornia crassipes. dans les conditions du Soudan le nombre moyen de fleurs par inflorescence fut de 12 (s'étendent de 4 à 26), cependant que le nombre moyen de capsules par inflorescence fut de 1,5 (s'étendant de 0 à 16). Le probléme de la faible mise à fruit suggere qu'elle pourrait etre due a des facteurs écologiques: température élevée et faible humidity relative.Les fleurs étaient en majorité meso-stylées, les races à long style ou à style court étaient absentes ou tres rares. Generative Vermehrung von Eichhornia crassipes (Mart.) Solms. im NilIn einer Untersuchung über einige Faktoren, von denen angenommen wird, dass sie die Fruchtbildung von Eichhornia crassipes unter sudanesischen Bedingungen beeinflussen, war die durchschnittliche Anzahl von Blüten, 12 Blüten pro Inflorescenz (4–26), wáhrend die durchschnittliche Anzahl von Kapseln nur 1.5 Kapseln pro Inflorescenz war (0–16), Das Problem der geringen Fruchtausbildung wurde folgenden okologischen Faktoren zugeschrieben; hohe Temperatur und niedrige Luftfeuchtigkeit.Bei den Blüten wurden überwiegend Stempel miltlerer Länge gefunden, während die ‘Rassen’ kurzer und langer Stempel nicht oder nur sehr selten anzutreficn waren.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-3180.1975.tb01089.x
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  • 3
    Electronic Resource
    Electronic Resource
    A study of assimilation and translocation in Cuscuta hyalina Heyne ex Roth., Orobanche ramosa L. and Striga hermonthica Benth. (1976)
    Oxford, UK : Blackwell Publishing Ltd
    Weed research 16 (1976), S. 0 
    Details
    ISSN: 1365-3180
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Quantitative determinations of chlorophyll showed that Cuscuta hyalina and Striga hermonthica possess chlorophyll. No trace of chlorophyll was found in Orobanche ramosa. Autoradiographic evidence showed that both radiocarbon and radiophosphorous moved from host to parasite in alt three species. Photosynthesis occurs in S. hermonthica when the parasite is isolated from its host. The adventitious roots of S. hermonthica and O. ramosa appear to be functional in absorbing a proportion of the required inorganic substances and water. S. hermonthica is a hemiparasite, O. ramosa is a holoparasite but C. hyalina is best described as a partial parasite.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-3180.1976.tb00385.x
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  • 4
    Electronic Resource
    Electronic Resource
    Rheumatic Fever in Children: A 15-Year Experience in a Developing Country (2000)
    Springer
    Pediatric cardiology 21 (2000), S. 119-122 
    Details
    ISSN: 1432-1971
    Keywords: Key words: Rheumatic fever — Children — Developing country
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. Clinical data from 91 patients with rheumatic fever (RF), who were hospitalized at a tertiary hospital in Lebanon between 1980 and 1995, were reviewed retrospectively. Age on hospitalization was 11.1 ± 2.9 years (mean ± SD, range 3–17 years). Nineteen patients were 〈6 years of age. Manifestations included carditis (93%), arthritis (39%), Sydenham's chorea (2%), erythema marginatum (4%), subcutaneous nodules (1%), fever (62%), arthralgia (55%), and acute congestive heart failure (CHF) on initial presentation (44%). Pericardial effusion occurred in 11%. There was positive family history of RF in 14%. Mitral insufficiency and aortic insufficiency occurred in 67 and 35%, respectively. Both mitral and aortic valves were involved in 30% of cases. Tricuspid insufficiency developed in 3% and pulmonary insufficiency in 1%. Mitral stenosis developed in 19%. Twenty-eight patients underwent surgical intervention: mitral valve repair and commissurotomy in 9/91 (10%), mitral valve replacement in 18/91 (20%), and aortic valve replacement in 9/91 (10%). Overall mortality was 12%: 5 following surgical intervention (3 after mitral valve surgery and 2 after mitral and aortic valve surgery). All patients that died had CHF on initial presentation (p= 0.006). This study includes hospitalized patients with predominant rheumatic heart disease. Initial presentation with CHF is a risk factor for surgical intervention and mortality. A significant high surgical intervention rate is noted that is probably related to the nature of the selected group studied. This study emphasizes the significant morbidity and death in patients with RF and carditis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002469910017
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  • 5
    Electronic Resource
    Electronic Resource
    Transcaecal ileal diversion in the management of the ‘at risk’ distal colonic anastomosis (1993)
    Springer
    International journal of colorectal disease 8 (1993), S. 57-59 
    Details
    ISSN: 1432-1262
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé Une diversion iléale trans-cœcale a été utilisée en association avec une résection primaire suivie d'anastomose pour mettre au repos une anastomose colique distale élective chez 10 patients et permettre un lavage colique sur table avec une protection colique ultérieure chez 11 patients se présentant en urgence pour une occlusion colique distale. Une suppuration post-opératoire de la plaie survient chez 4 patients (19%) avec une déhiscence anastomotique chez 1 patient. Le séjour moyen hospitalier était de 14 jours (10–19). La diversion iléale transcœcale est simple à réaliser. Elle peut faciliter la résection primaire suivie d'anastomose à la fois en chirurgie élective et en chirurgie d'urgence sans accroître la morbilité, la mortalité ou la durée du séjour hospitalier.
    Notes: Abstract Transcaecal ileal diversion has been used in association with primary resection and anastomosis to defunction an elective distal colonic anastomosis in 10 patients and to allow on-table colonic lavage with subsequent colonic defunction in 11 patients presenting as an emergency with distal colonic obstruction. Post-operative wound sepsis occurred in four patients (19%) with a clinical anastomotic leak in one patient. The median hospital stay was 14 (10–19) days. Transcaecal ileal diversion is simple to perform. It may facilitate primary resection and anastomosis in both the elective and emergency situation without increasing morbidity, mortality or the hospital stay.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00299326
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  • 6
    Electronic Resource
    Electronic Resource
    Multielement NAA for the characterization of Saudi Arabian rocks (1987)
    Springer
    Journal of radioanalytical and nuclear chemistry 109 (1987), S. 201-211 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract The instrumental neutron activation analysis technique (INAA) was used in the qualitative and quantitative analysis of 48 geological samples from the Umm Al-Birak area in the Kingdom of Saudi Arabia. The samples were properly prepared together with their standards and simultaneously irradiated in a neutron flux of 2.4 ·1012 n·cm−2 s−1 in the reactor facilities of the National Tsing Hua University (THOR) in Taiwan. Gamma-spectra from the high resolution Ge(Li) detector were analyzed using the BRUTAl code. As a result of the analysis of the geological samples, 20 trace elements were identified qualitatively and quantitatively. These elements are: Co, Cr, Eu, Fe, Hf, K, La, Lu, Na, Rb, Sc, Sm, Ta, Tb, Th, U, Yb, Zn and Zr. The concentrations of these elements have been used in the investigations of the geochemistry of the Umm Al-Birak microgranite site using the BMDP computer code of the Ministry of Petroleum and Mineral Resources. This investigation showed that the high grade area is a differentiated rock that crystallized in a late stage of the Umm Al-Birak microgranite area.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02117536
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  • 7
    Electronic Resource
    Electronic Resource
    Ecological studies in the vegetation of the Sudan (1971)
    Springer
    Plant ecology 23 (1971), S. 177-198 
    Details
    ISSN: 1573-5052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The hydro-ecological relationships (interaction of rainfall, topography and soil type) and the effect of the biotic factor (grazing and human interference) on the distribution, establishment and dynamics of the communities characterizing the vegetation of Khartoum Province, Sudan are outlined. In this arid region the type, density and performance of the plants depend on the water resources of the habitat and an intimate relationship exists between landform and plant growth. The small local differences in ground level control the direction of water, thus increasing the water and the soil of one area at the expense of another. The “favoured areas” show dense growth, vegetation follows and marks the water-leading and water-collecting channels. Thus the distribution of the community types in this locality seems to be a function of the interaction of soil type, topography and moisture content. Grazing, in addition to reducing the vegetative material, changes the species composition of the plant communities and induces, in some plants, the production of a certain growth form.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02326661
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  • 8
    Electronic Resource
    Electronic Resource
    Ecological studies in the vegetation of the Sudan (1971)
    Springer
    Plant ecology 23 (1971), S. 153-176 
    Details
    ISSN: 1573-5052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The general features of the vegetation of Khartoum Province, Sudan, are described with a brief account of the geology, geomorphology, soils and climate of the area. The study gives the detailed description of the thirteen community types which are recognized as the principal units of the vegetation of the Province. For each community type the analytic, synthetic and habitat characters are given. Sociological ranges of the species, features which characterize each community type, the floristic similarities and differences between the community types are discussed. Vegetational forms are also recognized and classified. The vegetation of this arid region reflects an interesting picture of a floristically poor vegetation divisible into a surprisingly small number of plant communities recognized in the field in terms of the vegetation and habitat.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02350620
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    Paper (German National Licenses)
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  • 9
    Electronic Resource
    Electronic Resource
    Ecological studies in the vegetation of the Sudan (1971)
    Springer
    Plant ecology 23 (1971), S. 177-198 
    Details
    ISSN: 1573-5052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The hydro-ecological relationships (interaction of rainfall, topography and soil type) and the effect of the biotic factor (grazing and human interference) on the distribution, establishment and dynamics of the communities characterizing the vegetation of Khartoum Province, Sudan are outlined. In this arid region the type, density and performance of the plants depend on the water resources of the habitat and an intimate relationship exists between landform and plant growth. The small local differences in ground level control the direction of water, thus increasing the water and the soil of one area at the expense of another. The “favoured areas” show dense growth, vegetation follows and marks the water-leading and water-collecting channels. Thus the distribution of the community types in this locality seems to be a function of the interaction of soil type, topography and moisture content. Grazing, in addition to reducing the vegetative material, changes the species composition of the plant communities and induces, in some plants, the production of a certain growth form.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02350621
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    Paper (German National Licenses)
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  • 10
    Electronic Resource
    Electronic Resource
    Ecological studies in the vegetation of the Sudan (1971)
    Springer
    Plant ecology 23 (1971), S. 153-176 
    Details
    ISSN: 1573-5052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The general features of the vegetation of Khartoum Province, Sudan, are described with a brief account of the geology, geomorphology, soils and climate of the area. The study gives the detailed description of the thirteen community types which are recognized as the principal units of the vegetation of the Province. For each community type the analytic, synthetic and habitat characters are given. Sociological ranges of the species, features which characterize each community type, the floristic similarities and differences between the community types are discussed. Vegetational forms are also recognized and classified. The vegetation of this arid region reflects an interesting picture of a floristically poor vegetation divisible into a surprisingly small number of plant communities recognized in the field in terms of the vegetation and habitat.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02326660
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    Paper (German National Licenses)
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