Showing papers by "University of Jordan published in 1984"
TL;DR: The first-motion directions of four large shocks, including the largest, at both UNJ and HLW stations are in agreement with a strike-slip mechanism at a NE-trending fault in this area as discussed by the authors.
Abstract: Summary. In the period 1983 January 21 -April 20, more than 500 local earthquakes (ML≤ 4.85) occurred in the Gulf of Aqaba area between latitudes 29°00′and 29°25′and longitudes 34°30′and 34°45′. Most of the activity including the largest shocks was restricted to the area between latitudes 29°07′and 29° 15′and longitudes 34°33′and 34°42′where the NW Atiya regional dyke crosses the area and is horizontally displaced by NE strike-slip faults. The first-motion directions of four large shocks, including the largest, at both UNJ and HLW stations are in agreement with a strike-slip mechanism at a NE-trending fault in this area. The b value showed a temporal increase with time from 0.43 to 0.69. This, together with other geological and geophysical observations may indicate that subsurface magmatic activity has affected the stressed crustal rocks, thus triggering earthquake activity.
This swarm and historical information indicate that the Gulf of Aqaba-Dead Sea Jordan transform is characterized by both swarm and foreshock-aftershock types of seismic activity and therefore the relatively large proportion of non-seismic slip along the southern part of this transform may actually be higher if swarm-type activities are considered.
58 citations
TL;DR: Atomic absorption spectrophotometry was used to measure the levels of Mg, Fe and Cd in various tissues of the seagrasses Halophila ovalis (R. Brown) Hook.
45 citations
TL;DR: Three hundred and ninety patients who died following fire burns and scalds between 1973 and 1982 were subjected to autopsy examination at the departments of Forensic Medicine in the Ministry of Health and Jordan University Hospital.
37 citations
TL;DR: Five species of cestodes, except for D. caninum which was encountered in the ileum, were almost exclusively recovered from the duodenum and the jejunum and infection was significantly higher in males than in females.
Abstract: Five species of cestodes namelyEchinococcus granulosus, Taenia hydatigena, Taenia pisiformis, Taenia ovis andDipylidium caninum were recovered post mortem from 120 out of 173 stray dogs collected from the 5 governorates of Jordan during the period June 1979 to November 1980. Twenty-five of the examined dogs (14%) were found to be infected withE. granulosus, 79 (46%) withT. hydatigena, 14 (8%) withT. pisiformis and 5 (3%) withT. ovis. Dipylidium caninum was encountered in 33 (19%) of the examined dogs and infection with this parasite was significantly higher in males than in females. The parasites, except forD. caninum which was encountered in the ileum, were almost exclusively recovered from the duodenum and the jejunum. Single, double and triple infections with those cestodes were recorded.
35 citations
TL;DR: Kevlar 29 is an aromatic polyamide fiber spun from the polymer poly(p-phenylene terephthalamide) which has a paracrystalline structure with a lattice distortion parameter g = 5.9% and an a∗ constant = 0.51 as discussed by the authors.
Abstract: Kevlar 29 is an aromatic polyamide fiber spun from the polymer poly(p-phenylene terephthalamide). It has a paracrystalline structure with a lattice distortion parameter g = 5.9% and an a∗ constant = 0.51. The equatorial x-ray “crystallinity” is 68%; the microparacrystal (mPC) sizes are D 002 = 50 nm, D 110 = 4.4 nm, and D 200 = 3.6 nm. The mPCs are well oriented; the orientation parameter = 0.047. The small-angle x-ray diffraction pattern indicated that the fiber has nc chain folding. It has high tenacity (2.81 GNm−2), close to the tenacity of steel; high Young's modulus (63.9 GNm−2); small breaking strain (3.8%); and a very high melting point (600°C). Wide- and small-angle x-ray diffraction techniques, differential scanning calorimetry (DSC), and an Amsler tensile tester have been used to characterize the fiber and to assess the effect of annealing on its morphology and mechanical properties.
32 citations
TL;DR: Variation in the distribution pattern of the bacterial genera may be related partly to inhibiting substances such as flavones, phenolic acids and tannins, and partly to differences in the quantity and quality of soluble organic exudates released by the plants.
27 citations
TL;DR: The properties and relative distribution of palygorski te in the clay fractions of the Jurassic, Cretaceous, Tertiary, and Quaternary rocks exposed on the eastern side of the Jordan Valley were investigated by x-ray diffraction, electron microscopy and total chemical analysis.
Abstract: The properties and relative distribution of palygorski te in the clay fractions of the Jurassic, Cretaceous, Tertiary, and Quaternary rocks exposed on the eastern side of the Jordan Valley were investigated by x-ray diffraction, electron microscopy and total chemical analysis. Palygorskite was observed only in the upper Cretaceous and Tertiary limestones. The fine clay ( The lacustrine sediments (Lisan Marl) within the Jordan Valley and the all uvial-colluvial soils associated with these sediments also contained appreciable amounts of palygorskite. The palygorskite in these soils appears to be mainly inherited from the exposed limestones and the lacustrine sediments. The soils in the southern part of the Jordan Valley contained higher amounts of palygorskite as well as soluble salts and gypsum relative to those in the northern part. In general, palygorskite contents were observed to be higher in the topsoil than the subsoil. This may indicate the formation of some pedogenic palygorskite in addition to that portion inherited from parent material.
24 citations
TL;DR: As CF was only recently recognized in Jordan, it is believed that the prevalence of CF among Jordanian children is underestimated and further prospective study to evaluate its prevalence and impact on child health in Jordan is urgently needed.
Abstract: SUMMARYCystic fibrosis (CF) was diagnosed in 12 children from a total of 15,314 children admitted to the Paediatric Department at Jordan University Hospital (JUH) over the period 1976–1980. A diagnosis of meconium ileus was made in five children. The remaining seven affected children were diagnosed clinically on the basis of recurrent chest problems, failure to thrive, positive family history and a high level of sweat chloride, range 72–115 mEq/1 (mean 97.6 mEq/1). Five children died (41.7%); three of the group with meconium ileus died during the post-operative period and two of the other group died soon after the diagnosis was made. The cause of such a high mortality rate is multifactorial. As CF was only recently recognized in Jordan, it is believed that the prevalence of CF among Jordanian children is underestimated. CF is still a very serious illness that demands early diagnosis and an intensive programme of continuing care. Therefore, further prospective study to evaluate its prevalence and impact on...
19 citations
TL;DR: The results of a three year prospective study of inherited bleeding syndromes in Jordan are presented, finding that Glanzmann's thrombasthenia is very common and a significant number of bleeders had fatal hemorrhage.
Abstract: The results of a three year prospective study of inherited bleeding syndromes in Jordan is presented. There were 112 patients from 64 families. Of these there were 42 patients with hemophilia A, 23 with Glanzmann's thrombasthenia, 22 with von Willebrand's disease, 11 with Christmas disease, 6 with hypofibrinogenemia, 3 with afibrinogenemia, 2 with factor XIII deficiency, 2 with storage pool disease and 1 with factor XI deficiency. The pattern of inherited bleeding syndromes in Jordan is different from that seen in Europe and U.S.A. in that Glanzmann's thrombasthenia is very common. High proportion of hemophiliacs were severe. Arthropathy was common. A significant number of bleeders had fatal hemorrhage. In a high proportion of patients, no family history of bleeding was found.
19 citations
TL;DR: The isotopic composition of the present precipitation as well as the groundwaters of Jordan is found to lie between the eastern Mediterranean and the meteoric water lines as discussed by the authors, where the isotopic compositions of precipitation and groundwater from north and central Jordan plot between both lines, those of southern Jordan cluster closer to the meteoritic water line.
18 citations
TL;DR: During the 8-year period from 1973 through 1980 there were 221 firearm deaths autopsied and investigated by both departments of Forensic Medicine in Amman, Jordan, with a sharp increase in the incidence of homicides and accidents over the years.
Abstract: During the 8-year period from 1973 through 1980 there were 221 firearm deaths autopsied and investigated by both departments of Forensic Medicine in Amman, Jordan. Although restrictions for legal possession of firearms are minimal, more illegal arms are possessed. Fifty-one per cent of such deaths were homicides, 31 per cent accidents and 18 per cent suicides, with a sharp increase in the incidence of homicides and accidents over the years. Firearms rank as the fourth cause of death of all cases of unnatural death, and homicidal firearm deaths constitute 29 per cent of all homicides in general.All assailants and 80 per cent of the victims were males. Females were most commonly the victims of homicide. Police and armed forces comprise 20 per cent of the subjects studied and most of the fatalities involved children and young adults.
TL;DR: In this article, the authors recast the dimer problem in three complementary forms which are based on the conventional eigenvalua equation in both its Schrodinger and Lippmann-Schwinger versions; the quantum parameter; and the concept of an eigenmass below which no binding occurs for a specific interatomic potential.
Abstract: Some aspects of dimers and trimers are explored in a unified manner for various helium species. These include3He,4He and6He as well as combinations thereof. The subtle interplay among the central factors involved is delineated carefully. In particular, the dimer problem has been recast in three complementary forms which are based on: (1) the conventional eigenvalua equation in both its Schrodinger and Lippmann-Schwinger versions; (2) the quantum parameter; and (3) the concept of an eigenmass below which no binding occurs for a specific interatomic potential. This framework turns out to be adaptable, in its gross features, to two-dimensional systems and to the liquid phase as well. General implications ofn-merization in several helium liquids, comprising thin films, are examined briefly.
TL;DR: Although no genotype × treatment interaction was detected for any of the traits studied, grain yields of the local cultivars which are adapted to dryland conditions were affected more than other genotypes by awns' removal.
TL;DR: In this paper, the authors propose a "modele planifie" dans les departements d'anglais des universites arabes, which is a planification linguistique based on the sociolingvistika pozicio de la fremda lingvo.
Abstract: SOMMAIREVers un "modele planifie" dans les departements d'anglais des universites arabesSi l'on considere la planification de l'enseignement des langues etrangeres, principalement de l'anglais, dans les departements concernes des pays arabes, l'on constate que les problemes rencontres par ces departements sont fondamentalement symptomatiques de l'echec de la politique sur laquelle repose les programmes. En effet, il ne s'agit pas seulement d'un echec dans leur realisation.La formulation de cette politique ignore ou neglige entre autres deux elements importants: (1) la position socio-linguistique de la langue etrangere, l'anglais, qui definit sa place dans le systeme educatif ainsi que le niveau planifie (suppose) des connaissances linguistiques des etudiants a leur entree dans ces departements, position qui definit egalement le statut de l'anglais vis-a-vis de la langue nationale a tous les niveaux de l'enseignement et dans chaque domain ou il est employe; et (2) la relation entre, d'une part, les buts et les programmes de ces departements et, d'autre part, les besoins de la communaute, avec les enseignements a en tirer pour les groupes charges de participer a l'elaboration de ces buts.Dans cet article, l'auteur conclut que les efforts actuels pour resoudre ces difficultes resteront infructueux tant qu'on n'aura pas correctement identifie les raisons des problemes; "... une formulation inadequate des problemes engendre inevitablement des solutions inadequates" (Dery 1982: 23). Indirectement, il est favorable a un modele de planification, c'est-a-dire a une solution anticipee des problemes, plutot qu'a un modele de solutions occasionnelles (Faludi 1973). Il termine en proposant, pour les departements d'anglais des pays arabes, un modele base sur les parametres de la formulation d'une planification linguistique.RESUMOLa jako) pri angla lingvo ce arabaj universitatoj: Ek al "plana modelo "Se oni pritaksas la fremdlingvan (anglalingvan) planadon de la fakoj pri la angla lingvo en la araba landaro, surbaze de la problemaro, kiun frontas tiuj fakoj, percepteblas, ke tiuj problemoj estas esence simptomoj de la malsukceso de la politiko, el kiu ties planoj fontas; ne nur malsukceso de la realigo de tiuj planoj.En la formuligo de la politiko de la fakoj pri angla lingvo, oni ignoris au neglektis gravajn elementojn, karakterizantajn la politikon. Inter tiuj elementoj estas: (1) la sociolingvistika pozicio de la fremda lingvo (la angla), kiu difinas kaj la lokon de la angla en la lernejaro kaj la planita (atendita) nivelo de lingvoposedo de eblaj enirantaj studentoj de la fako, kaj kiu ankau difinas la statuson de la angla kompare kun la nacia lingvo je ciu etapo de la edukado kaj en ciu sfero de sia uzo; kaj (2) la rilato inter, unuflanke, la celoj, programoj kaj instruplanoj de la fako, kaj la bezonoj de la komu-numo, aliflanke, kun la necesaj konkludoj ce la grupoj, kiuj devus partopreni en la starigo de celoj.La referajo argumentas, ke nunaj klopodoj solvi la problemojn, ne efikus, car oni ne guste identigis la radikojn de la problemoj; "... neadekvata formuligo de problemoj kreas (daǔre) neadekvatajn solvojn" (Dery 1982: 23). La artikolo nedirekte favoras la planan modeion, t.e., anticipan kaj antaubezonan solvon de problemoj, supere al la problemsolva modelo de iniciatita planado (Faludi 1973). La referajo finigas per modelo de la fakoj pri la angla lingvo en la araba landaro surbaze de la parametroj de la formuligo de la politiko ce la lingvoplanado.
TL;DR: The dynamics of Arab leadership patterns can be abstracted by the prophetic-caliphas model as discussed by the authors, which includes personalism, individualism, lack of institutionalism, and the importance of the "great man".
Abstract: The dynamics of Arab leadership patterns can be abstracted by the prophetic-caliphas model'. Major elements of the model include personalism, individualism, lack of institutionalism, and the importance of the "great man." As an illustration, the leadership style of the late President Nasser is that of the "great man" while that of the ideologically oriented Ba'th party is that of the search for a "great man". Indeed, the "great man" is a more important binding force in Arab society than either ideology or institutions.
TL;DR: In this paper, the concentration of 59Fe in plants was determined using a Ge−Li detector, and the total Fe (indigenous + 59Fe) by atomic absorption spectrophotometry, while the indigenous Fe was calculated by difference.
Abstract: Chelated Fe fertilizer (FeEDDHA) was irradiated and applied . at five rates to three soils classified as Lake Charles clay (C), Zapata clay loam (CL), and Edna sandy loam (SL). Sorghum (Sorghum bicolor L. Moench) plants were grown in a greenhouse. Plant 59Fe concentration, uptake, fertilizer efficiency and magnitude of Fe fertilizer fixation were studied independently from indigenous Fe. The clay and sandy loam soils had exhibited occasional Fe deficiency problems, whereas, the clay loam soil caused extremely severe Fe chlorosis. In this clay loam soil, correction of Fe chlorosis with FeEDDHA was nil. The concentration of 59Fe in plants was determined using a Ge‐Li detector, and the total Fe (indigenous + 59Fe) by atomic absorption spectrophotometry, while the indigenous Fe was calculated by difference. The 59Fe concentration and uptake in the plants increased with applied rates regardless of soil type. Second crop plants had less 59Fe than the first crop at all Fe levels. Sorghum plants absorbed...
TL;DR: In this paper, the method of extracting the Bose-Einstein condensate fraction in He II within the Frohlich decomposition scheme is reconsidered and a new simple formula for determining this fraction is derived.
TL;DR: In this paper, a formal derivation of the force constants in pure transition metals and in transition-metal-based interstitial alloys is derived from a tight-binding description of the electronic structure of the system.
Abstract: A formal derivation of the force constants in pure transition metals and in transition-metal-based interstitial alloys is derived from a tight-binding description of the electronic structure of the system. This model takes into account all contributions to the energy and the self-consistent renormalization due to the energy variation on the impurity site. Charge transfer effects, i.e. electronic rearrangement around the displaced atoms, appear only up to first order in the displacement. The model is applied to pure palladium and α-PdH, and the difficulties involved in a numerical estimation are briefly outlined.
TL;DR: Camel (Camelus dromedarius) pepsins were precipitated from the extract of the fundic gastric mucosa by ammonium sulfate between 35 and 80% saturation and produced two isoenzymes, I and II, which were further purified to homogeneity on sephadex G-100.
TL;DR: In this article, arylnitrile oxides with α-amino acid esters, other than those of glycine and analine, have been found to constitute a synthetic route to the hitherto unknown 1,2,4-oxadiazin-6-ones 7.
TL;DR: Immature teratoma is a malignant form of teratomas that contains immature structures resembling those of the embryo that occurs most frequently in young women but it is very rarely reported in association with pregnancy.
TL;DR: In this paper, the dipole force tensor P resulting from the presence of one impurity in transition metals is formally given in terms of the exponential falloff with distance of the crystal field and hopping integrals of the alloy.
Abstract: The dipole force tensor P resulting from the presence of one impurity in transition metals is formally given in terms of the exponential fall-off with distance of the crystal field and hopping integrals of the alloy. Whereas the term arising from the variation of the crystal field integrals is generally neglected in usual calculations, the aim of the present work is to include it. A sum rule deduced from charge conservation through atomic movement leads to a relation between the variation of the tight-binding crystal-field integrals and the hopping integrals.
TL;DR: The nitrification rate in the rhizosphere of Suaeda and Arthrocnemum plants growing in saline soils, as affected by microbial populations, temperature, pH, and organic matter, was examined in the field throughout the year.
Abstract: The nitrification rate in the rhizosphere of Suaeda and Arthrocnemum plants growing in saline soils, as affected by microbial populations, temperature, pH, and organic matter, was examined in the field throughout the year. The genera Nitrosomonas and Nitrobacter were most common in the rhizosphere soil. The bacterial counts in the rhizosphere of both plants fluctuated during the study period, reaching peak values during February–March and in August. The nitrate concentration in the rhizosphere soil could be related with the observed increase in the numbers of ammonium-oxidizers and nitrite-oxidizers in the latter part of the study period. The pH of the rhizosphere soils did not have any influence on the nitrification rate at the values measured. The rhizosphere organic content varied between 1.8 and 4% (w/w), showing the continuous availability of organic matter in the soil. The seasonal changes in bacterial populations in the rhizospheres of both plants was described as the result of the combination of several factors.
TL;DR: Blood samples of 2500 healthy volunteer donors attending the Jordan University Hospital Blood Bank were screened for HB S Ag by the R.I.A. and R.P.H. methods and revealed the presence of 111 HBP S Ag positive samples, with a higher positive rate among elderly donors from crowded poor areas with low income, education and hygiene.
TL;DR: In this article, the laser absorption spectra of the band system A 1 Σ u + - X 1 ǫ g + (v ′, v ″) of Na 2 in the range between 16835 and 16960 cm −1 are analyzed.
01 Dec 1984-Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms
TL;DR: In this article, the amount of deuterium in the samples is determined from the integrated yield of the D, p)3H reaction in relation to the 16O(d, p 0)17O or 16O (d,p 1 1) 17O reaction.
Abstract: By using the D(d, p)3H nuclear reaction combined with the Rutherford-backscattering method, the amount of D2O in relation to H2O in water from the Dead Sea is measured. The amount of deuterium in the samples is determined from the integrated yield of the D(d, p)3H reaction in relation to the 16O(d, p0)17O or 16O(d, p1)17O reaction. For the low deuteron energies used (E ⩽ 0.63 MeV), the differential cross section of the 16O(d, p0)17O reaction was determined experimentally. No significant change of deuterium concentration in Dead-Sea water down to a depth of 36 m could be detected.
TL;DR: Deformations elastiques et limites d'elasticite pour des membranes de PVC contenant diverses concentrations in Ba en fonction de la vitesse de la deformation and de la temperature as discussed by the authors.
Abstract: Deformations elastiques et limites d'elasticite pour des membranes de PVC contenant diverses concentrations en Ba en fonction de la vitesse de la deformation et de la temperature
TL;DR: A 13-year-old female patient with 11-β-hydroxylase deficiency who was found to have short fourth metatarsals and pulmonary stenosis is described, and the unusual association between these abnormalities and this rare form of congenital adrenal hyperplasia is presented.
Abstract: This report describes a 13-year-old female patient with 11-β-hydroxylase deficiency who was found to have short fourth metatarsals and pulmonary stenosis. The unusual association between these abnormalities and this rare form of congenital adrenal hyperplasia is presented.
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