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Search Results: 1 - 10 of 349507 matches for " Josée K. Tshituta "
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Prognostic Signification of Admission Hyperglycemia among Acute Stroke Patients in Intensive Care Units in Kinshasa, the Democratic Republic of the Congo  [PDF]
Josée K. Tshituta, Fran?ois B. Lepira, Fran?ois P. Kajingulu, Jean Robert R. Makulo, Ernest K. Sumaili, Pierre Z. Akilimali, Aliocha N. Nkodila, Freddy M. Mbuyi, Angèle I. Masewu, Stéphane Mutombo, Eric B. Amisi, Jean Pierre M. Ilunga, Wilfrid B. Mbombo, Patrick M. Mukuna, Adolphe M. Kilembe
World Journal of Cardiovascular Diseases (WJCD) , 2019, DOI: 10.4236/wjcd.2019.99060
Abstract:
BACKGROUND AND AIM: Although admission hyperglycemia has been reported to be associated with unfavorable outcomes in acute stroke, little is known about this association in sub-Saharan Africa. Therefore, the aim of the present study was to assess the prognostic significance of admission hyperglycemia in the acute phase of stroke in Congolese patients. METHODS: In a multicenter prospective cohort study, consecutive patients with acute stroke were examined in 5 Emergency Rooms or Intensive Care Units of Kinshasa between July 15th, 2017 and March 15th, 2018. The severity of stroke was assessed at admission using the Glasgow Coma Scale. Stress hyperglycemia was defined as random blood glucose levels at admission > 140 mg/dL in patients without known type 2 diabetes mellitus (T2DM). The endpoint was 10-day all-cause in-hospital mortality. Survival (time-to-death) curves were built using the Kaplan Meier methods. Cox proportional analysis was used to identify predictors of 10-day all-cause in-hospital mortality. The predictive performance of blood glucose level
Incidence of Non-Immunological Defenses of Soil White Grubs on Parasitism Success of Mallophora ruficauda Larva (Diptera: Asilidae)
Marcela K. Castelo,José E. Crespo
Insects , 2012, DOI: 10.3390/insects3030692
Abstract: White grubs are larvae of Coleoptera of the family Scarabaeidae. They are known because of their intensive feeding habits on crop roots. Mallophora ruficauda (Diptera: Asilidae) is a dipteran parasitoid whose larva is a natural enemy for white grubs. This species is a solitary ectoparasitoid, where both female and larva realize different steps in the host location process. Female place its eggs in high grasslands and then, the larva finds and parasitizes the host in the ground. There are nine potential hosts in the area of action of this parasitoid; however a high preference for Cyclocephala signaticollis has been observed (87% of field parasitism). It is known that many insects have developed defensive and immunological mechanisms when attacked by a parasitoid, which can be behavioral, physiological, chemical or genetic. The objectives of this work were to investigate what kind of defense and non-immunological associated mechanisms the white grubs have against this parasitoid and to understand why M. ruficauda have such a high preference for masked chafer grubs or Cyclocephala species . In particular, for each white grub species, we asked: (1) If there is a differential behavioral reaction when a parasitoid attack is simulated; (2) If body attributes of white grubs species have influence on defense behavior, and particularly for the masked chafer C.?signaticollis; and (3) Why this species is the most selected by M. ruficauda. It was found that behavioral defenses of white grubs would explain the parasitism pattern of M.?ruficauda larvae and its preference for C. signaticollis.
Water treatment by multistage filtration system with natural coagulant from Moringa oleifera seeds
Franco, Monalisa;Silva, Gabriela K. e;Paterniani, José E. S.;
Engenharia Agrícola , 2012, DOI: 10.1590/S0100-69162012000500018
Abstract: this study presents an evaluation of a pilot multistage filtration system (msf) with different dosages, 131 mg l-1 and 106 mg l-1, of the natural coagulant extracted from moringa oleifera seeds in pre-filtration and slow filtration stages, respectively. the system was comprised by a dynamic pre-filter unit, two upflow filters in parallel and four slow filters in parallel, and in one of the four filters had the filter media altered. the performance of the system was evaluated by monitoring some water quality parameters such as: turbidity, apparent color and slow filter load loss. the stages that have received the coagulant solution had better treatment efficiency compared with the steps without it. however, the direct application of the coagulant solution in the slow filter caused rapid clogging of the non-woven blanket and shorter career length.
Moving Forward Moving Backward: Directional Sorting of Chemotactic Cells due to Size and Adhesion Differences
Jos K?fer,Paulien Hogeweg,Athanasius F. M Marée
PLOS Computational Biology , 2006, DOI: 10.1371/journal.pcbi.0020056
Abstract: Differential movement of individual cells within tissues is an important yet poorly understood process in biological development. Here we present a computational study of cell sorting caused by a combination of cell adhesion and chemotaxis, where we assume that all cells respond equally to the chemotactic signal. To capture in our model mesoscopic properties of biological cells, such as their size and deformability, we use the Cellular Potts Model, a multiscale, cell-based Monte Carlo model. We demonstrate a rich array of cell-sorting phenomena, which depend on a combination of mescoscopic cell properties and tissue level constraints. Under the conditions studied, cell sorting is a fast process, which scales linearly with tissue size. We demonstrate the occurrence of “absolute negative mobility”, which means that cells may move in the direction opposite to the applied force (here chemotaxis). Moreover, during the sorting, cells may even reverse the direction of motion. Another interesting phenomenon is “minority sorting”, where the direction of movement does not depend on cell type, but on the frequency of the cell type in the tissue. A special case is the cAMP-wave-driven chemotaxis of Dictyostelium cells, which generates pressure waves that guide the sorting. The mechanisms we describe can easily be overlooked in studies of differential cell movement, hence certain experimental observations may be misinterpreted.
Characterizations of the Extended Geometric, Harris, Negative Binomial and Gamma Distributions
E Sandhya,S Sherly,M K Jos,N Raju
Mathematics , 2005,
Abstract: Extended geometric distribution is defined and its mixture is characterized by the property of having completely monotone probability sequence. Also, convolution equations and probability generating functions are used to characterize extended geometric distributions. Further, some characterizations of Harris and negative binomial distributions based on probability generating functions are obtained. Relations between these distributions are derived and finally a gamma distribution is characterized in terms of its Laplace transform.
Analysis of the genetic polymorphism of Paracoccidioides brasiliensis and Paracoccidioides cerebriformis "Moore" by random amplified polymorphic DNA (RAPD) and 28S ribosomal DNA sequencing: Paracoccidioides cerebriformis revisited
Cavalcanti, Sarah Desirée Barbosa;Levi, José Eduardo;Dantas, Kátia Cristina;Martins, José Eduardo Costa;
Revista do Instituto de Medicina Tropical de S?o Paulo , 2005, DOI: 10.1590/S0036-46652005000300001
Abstract: our purpose was to compare the genetic polymorphism of six samples of p. brasiliensis (113, 339, bat, t1f1, t3b6, t5ln1), with four samples of p. cerebriformis (735, 741, 750, 361) from the mycological laboratory of the instituto de medicina tropical de s?o paulo, using random amplified polymorphic dna analysis (rapd). rapd profiles clearly segregated p. brasiliensis and p. cerebriformis isolates. however, the variation on band patterns among p. cerebriformis isolates was high. sequencing of the 28s rdna gene showed nucleotide conservancy among p. cerebriformis isolates, providing basis for taxonomical grouping, and disclosing high divergence to p. brasiliensis supporting that they are in fact two distinct species. moreover, dna sequence suggests that p. cerebriformis belongs in fact to the aspergillus genus.
Aterosclerosis de las carótidas: estudio patomorfológico y morfométrico utilizando el Sistema Aterométrico
Fernández-Britto Rodríguez,José E; Falcón Vilaú,Leonel; Castillo Herrera,José A; Guski,Hans; Affeld,K;
Revista Cubana de Investigaciones Biom??dicas , 1998,
Abstract: the right and left primordial carotid arteries and the 3 proximal cms of their internal and external bifurcations in 201 necropsies that met the requirementes to be considered a consecutive series were analyzed. age, sex, basic disease causing death and the direct cause of death were included in the analyses. for the pathomorphological and morphometric study, the arteries processed according to the international standards set by the world health organization (who). the arteries were qualitatively and quantitatively examined by applying the atherometric system (as), which is regarded by who as the best methodology to study and characterize the atherosclerotic lesion. to this end, 4 age groups were formed: under 40, 40 to 59, 60 to 79 and over 79 years. the most outstanding results were the following: the atherosclerosis increases with rising age in all types of lesions and for all as variables. the right carotid artery was the most affected in both male and female, the age at which fibrous plaques develop most was 40 to 50 years whereas the progression of the severe plaque was remarkably at 60 and over. over 80 years-old people showed less severe and fibrous plaques than 60-79 age group. this research work resulted in the hypothesis that vascular geometry of carotid arteries may be responsible for a higher impact on the right side.
Seletividade do oxyfluorfen para a cultura do pinh?o-manso
Gon?alves, K.S;S?o José, A.R;Velini, E.D;
Planta Daninha , 2009, DOI: 10.1590/S0100-83582009000500025
Abstract: an experiment was carried out to evaluate the selectivity of oxyfluorfen for physic nut culture. the experiment was arranged in a completely randomized design with five replications in a factorial 2 x 2 + 1, two herbicide doses (600 and 1,200 g ha-1 of active ingredient), two modes of application (on the plant and soil) and a control without herbicide application.. after transplanting the seedlings into plastic pots with 10 liters of soil, the treatments were applied using a bucket. when applied on the plants, oxyfluorfen was shown to be toxic in the doses tested, with more intense symptoms in the first days after treatment. after this period, the seedlings recovered strength and new shoots came out showing no symptoms of toxicity. these symptoms consisted of whitish spots on the leaves progressing to necrosis. in plants where the herbicide was applied in the soil, no visual symptoms of toxicity were observed. there was a reduction in fresh and dry weight of the leaves when 600 g ha-1 of the herbicide was applied on the plant or 1,200 g ha-1 was applied on the soil. however, leaf area and number of leaves did not differ significantly between the doses used and modes of application. of the four weeds sown (brachiaria decumbens, brachiaria plantaginea, sida rhombifolia and bidens pilosa) only bidens pilosa was not controlled by oxyfluorfen applied in pre-emergence.
Color polymorphism in Pachycoris torridus (Hemiptera: Scutelleridae) and its taxonomic implications Polimorfismo de color en Pachycoris torridus (Hemiptera: Scutelleridae) y sus implicaciones taxonómicas
GABRIELY K. SOUZA,TIAGO G. PIKART,HARLEY N. OLIVEIRA,JOSé E. SERRáO
Revista chilena de historia natural , 2012,
Abstract:
High temperature superconductivity in sulfur and selenium hydrides at high pressure
José A. Flores-Livas,Antonio Sanna,E. K. U. Gross
Physics , 2015,
Abstract: Due to its low atomic mass hydrogen is the most promising element to search for high-temperature phononic superconductors. However, metallic phases of hydrogen are only expected at extreme pressures (400 GPa or higher). The measurement of a record superconducting critical temperature of 190 K in a hydrogen-sulfur compound at 200 GPa of pressure[1], shows that metallization of hydrogen can be reached at significantly lower pressure by inserting it in the matrix of other elements. In this work we re-investigate the phase diagram and the superconducting properties of the H-S system by means of minima hopping method for structure prediction and Density Functional theory for superconductors. We also show that Se-H has a similar phase diagram as its sulfur counterpart as well as high superconducting critical temperature. We predict SeH3 to exceed 120 K superconductivity at 100 GPa. We show that both SeH3 and SH3, due to the critical temperature and peculiar electronic structure, present rather unusual superconducting properties.
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