171 research outputs found
Availability and Feasibility of Water Desalination as Non-conventional Resource for Agricultural Irrigation in the MENA Region: A review
This is the final version. Available on open access from MDPI via the DOI in this recordMany countries in the MENA region (Middle East and North Africa) are facing water scarcity, which poses a great challenge to agricultural production. Furthermore, water scarcity is projected to increase due to climate change, particularly in arid and semi-arid regions. The integration of solar power and water desalination systems in greenhouses to overcome water shortages is one of the preferred technologies in crop-growing areas. Crop growth control is done through sufficient management of environmental climatic variables as well as the quantity and quality of water and applied fertilisers with irrigation. Numerous crops such as cucumbers, tomatoes, peppers, lettuces, strawberries, flowers, and herbs can be grown under greenhouse conditions using desalinated water. This paper displays the state of the art in (i) solar-driven saltwater desalination to irrigate crops, (ii) the feasibility of water desalination for agriculture in the MENA region, (iii) the economics and environmental impacts of the desalination process, (iv) the quality of desalinated water compared with other non-conventional water resources and (v) recommendations for the future in the MENA region.Science, Technology, and Innovation Funding Authority (STIFA) of EgyptBritish Counci
Estimation of supply and demand functions of the major food security crops in the Sudan (1974- 2004)
This study aimed at estimating the supply and demand functions and measuring the food consumption gaps of the main food crops, namely sorghum, wheat and millet. Descriptive statistics and backward regret-ssion analysis were used as tools of analysis. Results showed that the quantity of food crops produced was far below the real needs for local consumption. Moreover, self-sufficiency ratio has declined from 100 % in 1981/1982 to 72.6% in 2000 /2001, indicating positive trend in the food consumption gap. Regarding sorghum crop, results showed that the most important factor affecting the supply of sorghum was the lagged producer price whereas the most important factors affecting demand for sorghum were consumer price of sorghum and per capita income. Results showed that the most important factors affecting the supply of wheat were the producer price of sorghum and the producer price of cotton whereas the most important factor affecting demand for wheat was the consumer price of sorghum. The millet crop was affected by the lagged producer price and consumer price of millet supply and demand functions, respectively. The results of this study indicated that, in a national sense, Sudan is food insecure during the period 1980/81-2004/2005. The shift in consumption habits towards wheat is highly responsible for the food insecurity.
 
Corrigendum to āChemical constituents and protective effect of Ficus ingens (Miq.) Miq. on carbon tetrachloride-induced acute liver damage in male Wistar albino ratsā [Journal of Saudi Chemical Society 17/1 (2013) 125ā133]
The Efficacy of Na-Butyrate Encapsulated in Palm Fat on Experimentally Induced Necrotic Enteritis and Enumeration of intestinal resident Clostridium perfringens in Broiler Chickens
Abstract: Experimental induction of necrotic enteritis (NE) successfully achieved by daily oral inoculation o
European clinical guidelines for Tourette syndrome and other tic disorders. Part II: pharmacological treatment
To develop a European guideline on pharmacologic treatment of Tourette syndrome (TS) the available literature was thoroughly screened and extensively discussed by a working group of the European Society for the Study of Tourette syndrome (ESSTS). Although there are many more studies on pharmacotherapy of TS than on behavioral treatment options, only a limited number of studies meets rigorous quality criteria. Therefore, we have devised a two-stage approach. First, we present the highest level of evidence by reporting the findings of existing Cochrane reviews in this field. Subsequently, we provide the first comprehensive overview of all reports on pharmacological treatment options for TS through a MEDLINE, PubMed, and EMBASE search for all studies that document the effect of pharmacological treatment of TS and other tic disorders between 1970 and November 2010. We present a summary of the current consensus on pharmacological treatment options for TS in Europe to guide the clinician in daily practice. This summary is, however, rather a status quo of a clinically helpful but merely low evidence guideline, mainly driven by expert experience and opinion, since rigorous experimental studies are scarce
An endogenous nanomineral chaperones luminal antigen and peptidoglycan to intestinal immune cells.
In humans and other mammals it is known that calcium and phosphate ions are secreted from the distal small intestine into the lumen. However, why this secretion occurs is unclear. Here, we show that the process leads to the formation of amorphous magnesium-substituted calcium phosphate nanoparticles that trap soluble macromolecules, such as bacterial peptidoglycan and orally fed protein antigens, in the lumen and transport them to immune cells of the intestinal tissue. The macromolecule-containing nanoparticles utilize epithelial M cells to enter Peyer's patches, small areas of the intestine concentrated with particle-scavenging immune cells. In wild-type mice, intestinal immune cells containing these naturally formed nanoparticles expressed the immune tolerance-associated molecule 'programmed death-ligand 1', whereas in NOD1/2 double knockout mice, which cannot recognize peptidoglycan, programmed death-ligand 1 was undetected. Our results explain a role for constitutively formed calcium phosphate nanoparticles in the gut lumen and show how this helps to shape intestinal immune homeostasis
Forward-planning intensity-modulated radiotherapy technique for prostate cancer
In this study, we present an intensity-modulated radiotherapy technique based on forward planning dose calculations to provide a concave dose distribution to the prostate and seminal vesicles by means of modified dynamic arc therapy (M-DAT). Dynamic arcs (350 degrees) conforming to the beamās eye view of the prostate and seminal vesicles while shielding the rectum, combined with two lateral oblique conformal fields (15 degrees with respect to laterals) fitting the prostate only, were applied to deliver doses of 78 Gy and 61.23 Gy in 39 fractions to the prostate and seminal vesicles respectively. Dynamic wedges (45 degrees of thick end, anteriorly oriented) were used with conformal beams to adjust the dose homogeneity to the prostate, although in some cases, hard wedges (30 degrees of thick part, inferiorly oriented) were used with arcs to adjust the dose coverage to the seminal vesicles. The M-DAT was applied to 10 patients in supine and 10 patients in prone positioning to determine the proper patient positioning for optimum protection of the rectum. The M-DAT was compared with the simplified intensity-modulated arc therapy (SIMAT) technique, composed of three phases of bilateral dynami
MAKING TRAFFIC SIGNS FROM REMNANTS OF LOCAL FACTORIES
The waste of environment are in cresing and varienting ,it depends on the humenty uses and factory waste. We make some expermentel to use these waste and make it be mone useful to our society .we study and checkes the standerds pieces to get its pnopenties therefore we mixtures the matio of cenamics factors waste as 60%while cement 5% kaolien day 10% and al_najaf sand contents of feldspar as 25% to give more powerful to structure of factor and ne_use them to making . Traffic Signs
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