194 research outputs found
‘Tenderstem’ Broccoli for Export Markets: an Analysis Study on the AgroFood Company
No full textDecision case, horticulture, agriculture economics, broccoli production, protected vegetable production, Agricultural Finance, Crop Production/Industries, Production Economics,
Wild Plant Habitat Characterization in the Last Two Decades in the Nile Delta Coastal Region of Egypt
No full textEnvironmental and land-use changes put severe pressure on wild plant habitats. The present study aims to assess the biodiversity of wild plant habitats and the associated spatiotemporal environmental changes in the coastal region of Dakahlia Governorate following an integrated approach of remote sensing, GIS, and samples analysis. Thirty-seven stands were spatially identified and studied to represent the different habitats of wild plants in the Deltaic Mediterranean coastline region. Physical and chemical characteristics of soil samples were examined, while TWINSPAN classification was used to identify plant communities. Two free Landsat images (TM and OLI) acquired in 1999 and 2019 were processed to assess changes via the production of land use and cover maps (LULC). Moreover, NDSI, NDMI, and NDSI indices were used to identify wild plant habitats. The floristic composition indicated the existence of 57 species, belonging to 51 genera of 20 families. The largest families were Asteraceae, Poaceae, and Chenopodiaceae. The classification of vegetation led to the identification of four groups. Canonical Correspondence Analysis (CCA) revealed that electrical conductivity, cations, organic carbon, porosity, chlorides, and bicarbonates are the most effective soil variables influencing vegetation. The results of the spectral analysis indicated an annual coverage of bare lands (3.56 km2), which is strongly related to the annual increase in vegetation (1.91 km2), water bodies (1.22 km2), and urban areas (0.43 km2). The expansion of urban and agricultural regions subsequently increased water bodies and caused occupancy of bare land, resulting in the development of wild plant habitats, which are mostly represented by the sparse vegetation class as evaluated by NDVI. The increase in mean moisture values (NDMI) from 0.03 in 1999 to 0.15 in 2019 might be explained by the increase in total areas of wild plant habitats throughout the study period (1999–2019). This may improve the adequacy of environments for wild habitats, causing natural plant proliferation
Nontraditional fishing port proposed at Edco city, Nile delta coast
No full textAbstractA nontraditional type of fishing port is proposed to be constructed at Edco city located on west side of the Nile Delta coast along the Mediterranean Sea. The fishermen of this city suffers from bone diseases as they use to push their boats manually to go in or out from the sea. The suggested port hasn’t any side effect on the coastal zone and it costs less than the traditional one. The field data collected by Coastal Research Institute (CoRI), research identity, has been analyzed and used as input of the two models. Shoreline survey was used to get the shoreline behavior along the study area and to calibrate the 1-D model. A two dimension model has been applied to get the wave distribution in the study area to study the wave behavior. The shoreline changes in the presence of the traditional port and the new one were conducted using one-dimensional numerical model. The study results showed that the proposed port has relatively low cost and has minimum coastal effect
Microbiota-Host Symbiosis In First-Onset Pediatric Inflammatory Bowel Disease
No full textIn recent years, the association between inflammatory bowel diseases (IBDs) and gut microbiota has been extensively studied in adults using post-treatment cohorts of patients. However, microbial composition and functional interplay between host genetics and microorganisms in newly diagnosed early IBD onset remain poorly defined. Using colonoscopic mucosal washes to collect mucosal-luminal microbiota from different intestinal locations, we studied the gut microbiome in a large number of children with either Crohn’s disease (CD) or ulcerative colitis (UC). Although no significant difference in the diversity was evident between the gut microbiota of IBD-affected and control children, the microbiome of IBD subjects is characterized by an increased abundance of potent hydrogen sulfide (H2S) producers and decreased abundance of beneficial butyrate producers. Microbiota and proteomic profiling revealed that the abundance of Atopobium parvulum, a potent H2S producer, was associated with increased CD severity and a concurrent reduction in the expression of the host H2S detoxification pathway. Gnotobiotic and conventionalized colitis-susceptible interleukin-10-deficient (Il-10-/-) mice showed that A. parvulum induces severe colitis, a phenotype requiring the presence of the gut microbiota. In addition, administration of bismuth, an H2S scavenger, prevented A. parvulum-induced colitis in Il-10-/- mice. Our findings have identified A. parvulum as a major mediator of inflammation severity. We also reveal an imbalance between the H2S production and detoxification in the gastrointestinal tract of pediatric IBD patients. Altogether, our findings provide new avenues for diagnostics as well as therapies to treat IBD
Microbiota-Host Symbiosis In First-Onset Pediatric Inflammatory Bowel Disease
No full textIn recent years, the association between inflammatory bowel diseases (IBDs) and gut microbiota has been extensively studied in adults using post-treatment cohorts of patients. However, microbial composition and functional interplay between host genetics and microorganisms in newly diagnosed early IBD onset remain poorly defined. Using colonoscopic mucosal washes to collect mucosal-luminal microbiota from different intestinal locations, we studied the gut microbiome in a large number of children with either Crohn’s disease (CD) or ulcerative colitis (UC). Although no significant difference in the diversity was evident between the gut microbiota of IBD-affected and control children, the microbiome of IBD subjects is characterized by an increased abundance of potent hydrogen sulfide (H2S) producers and decreased abundance of beneficial butyrate producers. Microbiota and proteomic profiling revealed that the abundance of Atopobium parvulum, a potent H2S producer, was associated with increased CD severity and a concurrent reduction in the expression of the host H2S detoxification pathway. Gnotobiotic and conventionalized colitis-susceptible interleukin-10-deficient (Il-10-/-) mice showed that A. parvulum induces severe colitis, a phenotype requiring the presence of the gut microbiota. In addition, administration of bismuth, an H2S scavenger, prevented A. parvulum-induced colitis in Il-10-/- mice. Our findings have identified A. parvulum as a major mediator of inflammation severity. We also reveal an imbalance between the H2S production and detoxification in the gastrointestinal tract of pediatric IBD patients. Altogether, our findings provide new avenues for diagnostics as well as therapies to treat IBD
Pre-stack seismic inversion for reservoir characterization in Pleistocene to Pliocene channels, Baltim gas field, Nile Delta, Egypt
No full textAbstract The Nile Delta, North Africa’s leading gas-producing region, was the focus of this study aimed at delineating gas-bearing sandstone reservoirs from the Pleistocene to Pliocene formations using a combination of pre-stack inversion and rock physics analysis. This research employed seismic inversion techniques, including full-angle stack seismic volumes, well logs, and 3-D with rock physics modeling to refine volumes of P-wave velocity (Vp), S-wave velocity (Vs), and density. Traditional seismic attributes, such as far amplitude, proved insufficient for confirming gas presence, highlighting partial angle stacks, integrated the need for advanced methods. Extended Elastic Impedance (EEI) analysis was used to predict fluids and identify lithology in clastic reservoir environments. The EEI approach facilitated the determination of optimal projection angles for key petrophysical properties such as porosity, shale volume, and water saturation. This method was applied to the middle Pliocene (Kafr El Sheikh Formation) and the Pleistocene (El Wastani Formation), revealing promising drilling sites. In the Kafr El Sheikh Formation, porosity ranged from 16 to 29%, shale volume from 21 to 40%, and hydrocarbon saturation from 25 to 90%. The study concludes that integrating pre-stack seismic inversion with EEI significantly enhances the likelihood of identifying gas-bearing sands while reducing exploration risks. The improved POS for the Pleistocene anomaly gas bearing sand (from 49 to 69%) and the middle Pliocene anomaly (from 46 to 66%) underscores the effectiveness of this approach in the Baltim Field, Offshore Nile Delta, and supports further drilling and development wells
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