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Search Results: 1 - 10 of 343672 matches for " Gisella S. Cruz-Garcia "
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Ethnobotanical investigation of 'wild' food plants used by rice farmers in Kalasin, Northeast Thailand
Gisella S Cruz-Garcia, Lisa L Price
Journal of Ethnobiology and Ethnomedicine , 2011, DOI: 10.1186/1746-4269-7-33
Abstract: Data was collected using focus groups and key informant interviews with women locally recognized as knowledgeable about contemporarily gathered plants. Plant species were identified by local taxonomists.A total of 87 wild food plants, belonging to 47 families were reported, mainly trees, herbs (terrestrial and aquatic) and climbers. Rice fields constitute the most important growth location where 70% of the plants are found, followed by secondary woody areas and home gardens. The majority of species (80%) can be found in multiple growth locations, which is partly explained by villagers moving selected species from one place to another and engaging in different degrees of management. Wild food plants have multiple edible parts varying from reproductive structures to vegetative organs. More than two thirds of species are reported as having diverse additional uses and more than half of them are also regarded as medicine.This study shows the remarkable importance of anthropogenic areas in providing wild food plants. This is reflected in the great diversity of species found, contributing to the food and nutritional security of rice farmers in Northeast Thailand.The collection and consumption of 'wild' plant foods from agricultural and non-agricultural ecosystems has been documented in multiple cultural contexts, illustrating their use and importance among farming households throughout the world [1-3]. The evidence to date suggests that gathering by farmers occurs in various environments, ranging from intensively farmed areas, to more subsistence oriented horticultural systems, and finally in more pristine areas such as forests. This is certainly the case of rice farmers in Asia [4]. For example, Ogle et al. [5,6] found that in the Mekong Delta of Vietnam 90% of women eat wild vegetables, uncovering a total of 94 species. Kosaka [7], in his research on flora from the paddy rice fields in Savannakhet, Laos, recorded 11 edible species from a total of 19 herbaceous useful pla
Weeds as important vegetables for farmers
Gisella S. Cruz-Garcia,Lisa L. Price
Acta Societatis Botanicorum Poloniae , 2012, DOI: 10.5586/asbp.2012.047
Abstract: The objective of this study was to investigate the multiple uses and cognitive importance of edible weeds in Northeast Thailand. Research methods included focus group discussions and freelistings. A total of 43 weeds consumed as vegetable were reported, including economic, naturalized, agricultural and environmental weeds. The weedy vegetables varied considerably on edible parts, presenting both reproductive (flowers, fruits and seeds) and vegetative organs (shoots, leaves, flower stalks, stems or the whole aerial part). The results of this study show that weedy vegetables are an important resource for rice farmers in this region, not only as a food but also because of the multiple additional uses they have, especially as medicine. The fact that the highest Cognitive Salience Index (CSI) scores of all wild vegetables freelisted corresponded to weeds, reinforces the assertion that weeds are culturally cognitively important for local farmers as a vegetable source. This is a key finding, given that these species are targets of common pesticides used in this region.
The mother – child nexus. Knowledge and valuation of wild food plants in Wayanad, Western Ghats, India
Gisella Cruz García
Journal of Ethnobiology and Ethnomedicine , 2006, DOI: 10.1186/1746-4269-2-39
Abstract: Results ratify that women are the knowledge holders and are the primary means of knowledge transmission to their children. Nevertheless, fewer children are collecting wild food plants with mothers and learning about them, apparently because of children's lack of time. On the other hand, older people acknowledge that a "change in taste" is occurring among younger generations. In general, there is a simultaneous transmission from mothers to children of contrasting values pertaining to wild food plants: that they are 'good food' but also that they are symbols of low status and poverty, leading to feelings of shame and inferiority.Finally, the study concludes that the educational programme, through a "learning by doing" approach counteracts social stigma and encourages learning among children of all ages and socio-cultural groups, particularly stimulating non-tribal children to learn from tribals.Wayanad District, in the Western Ghats of India, is an area with great biological diversity where the tribal groups and other poor non-tribal peoples greatly depend on wild food resources for their subsistence – particularly on wild food plants (hereafter referred to as WFPs). WFPs are also renowned as famine foods in periods of food stress or shortage. WFPs, which are also important to cultural identity, provide essential sources of nutrients and vitamin A, as well as much seasonal dietary variety [1-3].Nevertheless, it was reported in a recent unpublished study called 'Gender dimensions of wild food management in Wayanad, Kerala' (Narayanan MKR, Swapna MP and Kumar NA, 2004) made by the Community Agrobiodiversity Centre (hereafter referred to as CAbC) of the M.S. Swaminathan Research Foundation, that there is a decrease in both knowledge and consumption of WFPs mainly due to eroding availability of these plant resources and changing values around WFP consumption, which is increasingly seen as a symbol of poverty and 'tribalness'. The problem of erosion of cultural values and
(2+1)-Dimensional Black Hole with Coulomb-like Field
M. Cataldo,N. Cruz,S. del Campo,A. Garcia
Physics , 2000, DOI: 10.1016/S0370-2693(00)00609-2
Abstract: A (2+1)-static black hole solution with a nonlinear electric field is derived. The source to the Einstein equations is a nonlinear electrodynamics, satisfying the weak energy conditions, and it is such that the energy momentum tensor is traceless. The obtained solution is singular at the origin of coordinates. The derived electric field E(r) is given by $E(r)=q/r^2$, thus it has the Coulomb form of a point charge in the Minkowski spacetime. This solution describes charged (anti)--de Sitter spaces. An interesting asymptotically flat solution arises for $\Lambda=0$.
Association of CYP2C19 genotype with type 2 diabetes  [PDF]
Carlos Hoyo-Vadillo, Jaime Garcia-Mena, Adán Valladares, Caterina R. Venturelli, Niels Wacher-Rodarte, Jesús Kumate, Miguel Cruz
Health (Health) , 2010, DOI: 10.4236/health.2010.210174
Abstract: Background: CYP2C19 is a major isoform of cytochrome P450 that metabolizes a number of commonly prescribed drugs such as omeprazole, diazepam, tolbutamide and propranolol. Its expression is regulated by the constitutive androstane receptor (CAR), involved in glucocorticoids synthesis. Since a number of crossliniks have been described for CYPs and some hormones, an association of CYP2C19 with type 2 diabetes is likely. Methods: Two groups were studied, 352 diagnosed with type 2 diabetes patients and 342 healthy volunteers form Mexico City. Both groups were tested for CYP2C19*2 and *3 alleles. We carried out an allelic discrimination using TaqMan assay for *2, and used FRET sensor and anchor probes for *3. Results: Ninety one percent of the subjects had the wild type allele, 9% have the *2 allele; no subject presented the *3 allele. The CYP2C19*2 allele is associated with type 2 diabetes (p = 0.012). Admixmap program was used to correct the admixture of this population and get the correlation. This was further confirmed in a linear model with a 67% power and by the method of Strom and Wienker for association on subjects within the mean range of Amerindian ancestry only (60%). Conclusion: Type 2 diabetes patients have significatly more *2 allele than healthy volunteers, more evident for the patients with the homocygous genotype.
Pro- and Anti-Inflammatory Cytokines Release in Mice Injected with Crotalus durissus terrificus Venom
A. Hernández Cruz,S. Garcia-Jimenez,R. Zucatelli Mendon a,V. L. Petricevich
Mediators of Inflammation , 2008, DOI: 10.1155/2008/874962
Abstract: The effects of Crotalus durissus terrificus venom (Cdt) were analyzed with respect to the susceptibility and the inflammatory mediators in an experimental model of severe envenomation. BALB/c female mice injected intraperitoneally presented sensibility to Cdt, with changes in specific signs, blood biochemical and inflammatory mediators. The venom induced reduction of glucose and urea levels and an increment of creatinine levels in serum from mice. Significant differences were observed in the time-course of mediator levels in sera from mice injected with Cdt. The maximum levels of IL-6, NO, IL-5, TNF, IL-4 and IL-10 were observed 15 min, 30 min, 1, 2 and 4 hours post-injection, respectively. No difference was observed for levels of IFN-. Taken together, these data indicate that the envenomation by Cdt is regulated both pro- and anti-inflammatory cytokine responses at time-dependent manner. In serum from mice injected with Cdt at the two first hours revealed of pro-inflammatory dominance. However, with an increment of time an increase of anti-inflammatory cytokines was observed and the balance toward to anti-inflammatory dominance. In conclusion, the observation that Cdt affects the production of pro- and anti-inflammatory cytokines provides further evidence for the role played by Cdt in modulating pro/anti-inflammatory cytokine balance.
Signal transduction in Plasmodium-Red Blood Cells interactions and in cytoadherence
Cruz, Laura N.;Wu, Yang;Craig, Alister G.;Garcia, Célia R.S.;
Anais da Academia Brasileira de Ciências , 2012, DOI: 10.1590/S0001-37652012005000036
Abstract: malaria is responsible for more than 1.5 million deaths each year, especially among children (snow et al. 2005). despite of the severity of malaria situation and great effort to the development of new drug targets (yuan et al. 2011) there is still a relative low investment toward antimalarial drugs. briefly there are targets classes of antimalarial drugs currently being tested including: kinases, proteases, ion channel of gpcr, nuclear receptor, among others (gamo et al. 2010). here we review malaria signal transduction pathways in red blood cells (rbc) as well as infected rbcs and endothelial cells interactions, namely cytoadherence. the last process is thought to play an important role in the pathogenesis of severe malaria. the molecules displayed on the surface of both infected erythrocytes (ie) and vascular endothelial cells (ec) exert themselves as important mediators in cytoadherence, in that they not only induce structural and metabolic changes on both sides, but also trigger multiple signal transduction processes, leading to alteration of gene expression, with the balance between positive and negative regulation determining endothelial pathology during a malaria infection.
Controle de plantas daninhas na cultura da soja (Glycine max (L.) Merrill) com herbicidas em pré-plantio incorporado
Victória Filho, R.;Garcia, I.;Cruz, L.S.P;
Anais da Escola Superior de Agricultura Luiz de Queiroz , 1981, DOI: 10.1590/S0071-12761981000200018
Abstract: the present research was carried out for studying the use of herbicides as pre-planting incorporation in soybean. the field research was conducted at "faculdade de ciências agrárias e veterinárias, campus de jaboticabal" on a oxisol containing 2,3% organic matter. the experimental design was the randomized complete blocks, with 12 treatments and 4 repetitions. each plot had 3 x 5.0 m and 0,60 m apart rows. the treatments with the rates in a.i./ha were as follows: dinitramine + metribuzin at 0.30 + 0.25; 0.50 + 0.25; 0.30 + 0.50; and 0.50 + 0.50; dinitramine + vernolate at 0.30 + 3.0 and 0.50 + 3.0; dinitramine at 0.30 and 0.50; metribuzin at 0.25 and 0.50; vernolate at 3.0; and, control. weed control effects in each treatment were evaluated by counting the surviving weeds, 40 and 80 days after planting the soybean. the effects of the treatments on the crop were evaluated by counting the stand and by visual evaluation of herbicida injuries. the most important weeds present in the area were: pennisetum setosum (l.) rich. pers.; acanthospernrum australe (loef.) o. kuntze; borreria sp. and sida sp. a good control of pennisetum setosum was obtained with dinitramine alone and dinitramine in mixture. borreria sp. was controled with dinitramine in mixture at the higher rate. sida sp. and acanthospermum australe were not controlled. the statistical analysis didn't show differences in the stand, only the treatment dinitramine + vernolate at 0.30 + 3.0 presenting significant differences.
Queimaduras oculares químicas: epidemiologia e terapêutica
Noia, Luciana da Cruz;Araújo, Ana Helena Garcia de;Moraes, Nilva S. Bueno de;
Arquivos Brasileiros de Oftalmologia , 2000, DOI: 10.1590/S0004-27492000000500008
Abstract: purpose: chemical injuries of the eye may produce exten-sive damage to the ocular surface, resulting in transient or per-manent visual impairment. purposes: to obtain data about epidemiology and inicial treatment aplied to patients who have suffered from ocular chemical burns and have arrived at a universitary hospital. methods: an ocular evaluation was performed 47 patients with ocular chemical burns in the ophthalmological emer-gency room of the hospital s?o paulo ? escola paulista de medicina / universidade federal de s?o paulo. results: most victims were young male adults and industrial accidents were quite frequent (46.8%). alkaline agents were more often involved (55.32%). the cornea was affected in 95.7% of the cases and grade i and ii of hughes' classification were the most seen. initial treatment of these patients was performed in 89.4% of the cases (ocular irrigation with physiological saline and debris removal) and 21 patients (44.68%) received topical medication. conclusions: several mistakes in the patients' initial approach were observed which may have influenced the prognosis of some patients.
Uso do resíduo de catalisador de processo de craqueamento catalítico fluído de hidrocarbonetos em refratários silicoaluminosos
Garcia, L. P.;Cruz, R. T. da;Bragan?a, S. R.;
Ceramica , 2009, DOI: 10.1590/S0366-69132009000200005
Abstract: this work aimed the development of methodology for the utilization of the residue of catalyst from of hydro-carbons catalytic cracking process in the production of alumina-silica refractory. this residue was used in substitution of part of conventional raw materials, with the consequent ambient and economic profit. it was selected some formulations based on the chemical and mineralogical compositions of refractory masses. they were fired in similar temperatures to the ones used for production of commercial refractories. the analysis of the technological properties of the formulations proposed, defined that the composition that contained 15% wt of catalyst waste got the best characteristics. the final product showed technical parameters similar to the ones of commercial refractory material.
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