water delivery
Recently Published Documents


TOTAL DOCUMENTS

342
(FIVE YEARS 86)

H-INDEX

27
(FIVE YEARS 5)

2022 ◽  
Author(s):  
Albachew Shumye ◽  
Tesfa Worku Meshesha

Abstract Background: Irrigation scheme performance assessment is vital to evaluate the impacts of irrigation practices, to identify performance gaps and to improve system performances. However, irrigation performance assessment has not been carried out for Yelen irrigation scheme since its operation. Therefore, this study has been done with the purpose of identifying and understanding the current level of irrigation performance of Yelen irrigation scheme. The indicators of adequacy, efficiency, dependability, deficiency and equity were used to determine hydraulic performance. Primary data were collected through flow measurement using current meter and Parshall flume, transect walk, household surveys and group discussions, whereas Secondary data were collected from different sources. CROPWAT 8.0 model, SPSS, Microsoft excels and GIS software was used to analyze the data. Water delivery indicators were evaluated from the amounts of water which was actually applied and which should have been applied.Results: According to the results of the study, the value of adequacy, dependability, efficiency, deficiency and equity were found to be 0.84, 0.26, 0.93, 0.17and 0.34 respectively. Generally, the performance of the irrigation system is poor. It mainly resulted due to water scarcity, illegal water abstraction, sedimentation of canals and inadequate operation and maintenance provisions.Concussions: Therefore, adequate maintenance and suitable management approaches are required to improve the irrigation system performance. Under the water scarce situations, improving the performance of water delivery systems can offer an opportunity to realize field level water savings.


2022 ◽  
Vol 13 (1) ◽  
pp. 1-6
Author(s):  
Vargas Hernández Victor Manuel ◽  
Luján-Irastorza Jesús Estuardo ◽  
Durand-Montaño Carlos ◽  
Hernández-Ramos Roberto ◽  
Ávila-Pérez Felipe de Jesús ◽  
...  

Background: Labor is a physiological process during which the fetus, the membranes, the umbilical cord and the placenta are expelled from the uterus and water delivery has become popular, although its prevalence is unknown, it is supported by healthy women with full-term pregnancies, without complications; although there is insufficient evidence to support or discourage it. Objective: To identify obstetric and neonatal outcomes and complications in women who delivered in water and to compare them with traditional deliveries. Material and methods: It is a retrospective, observational and cross-sectional study, where 2486 women were included from a database of 4223 women assisted from 2004 to 2020 in private hospitals; Of the 2486 patients included, 1025 had a water delivery and 1461 had a conventional delivery, discarding 1737 women who underwent caesarean section from the study. The information obtained from the patients, their data obtained for this study were kept in the anonymity of the patients, where they were analyzed: non-parametric data reported in percentages using Chi square; Parametric, perinatal and neonatal data are reported as mean plus standard deviation (±SD) and analyzed using Student's T, using the SPSS version 25 statistical package. Results: A total of 2486 women were included in this study, the birth in 1025 was water delivery (24%) and 1461 was conventional delivery (35%), 1737 caesarean section (41%) were excluded from the study, no difference was observed maternal age; unlike weight, height, body mass index; they were higher in women with water birth compared to conventional. No difference was demonstrated between nulliparous (45.99%) and multiparous (53.86%) when comparing both birth in water and conventional; only increase in previous caesarean sections (9.36 vs 6.5%, p=0.008) and decrease in previous abortions (16.19 vs 20.94%, p=0.002) in water delivery with the conventional one; complications were not different: administration of oxytocin (3.2 vs 3.1) or postpartum hemorrhage (0.29 vs 0.13) in both deliveries; no differences in first degree perineal tears (21.4 vs 18.5%). Conclusion: Water birth reduces stress, pain sensation, second and third degree perineal lacerations and contributes to better newborn outcomes; the selection and inclusion of patients with low-risk pregnancies allows better perinatal results than conventional delivery; but, further studies are required to use it routinely.


2021 ◽  
Author(s):  
Sean N. Raymond ◽  
Andre Izidoro ◽  
Emeline Bolmont ◽  
Caroline Dorn ◽  
Franck Selsis ◽  
...  
Keyword(s):  

2021 ◽  
Author(s):  
Alice Servonnet ◽  
Pierre-Paul Rompré ◽  
Anne-Noël Samaha

Reward-associated conditioned stimuli (CS) can acquire predictive value, evoking conditioned approach behaviors that prepare animals to engage with forthcoming rewards. Such CS can also acquire conditioned reinforcing value, becoming attractive and pursued. Through their predictive and conditioned reinforcing properties, CS can promote adaptive (e.g., locating food) but also maladaptive responses (e.g., drug use). Basolateral amygdala neurons projecting to the nucleus accumbens core (BLA→NAc core neurons) mediate the response to appetitive CS, but the extent to which this involves effects on the predictive and/or conditioned reinforcing properties of CS is unclear. Thus, we examined the effects of optogenetic stimulation of BLA→NAc core neurons on conditioned approach behavior and on the instrumental pursuit of a CS, the latter a measure of conditioned reinforcement. Water-restricted, adult male rats learned that a light-tone compound cue (CS) predicts water delivery. Pairing optogenetic stimulation of BLA→NAc core neurons with CS presentation potentiated conditioned approach behavior, and did so even under extinction conditions, when water was omitted. This suggests that BLA→NAc core neurons promote cue-induced expectation of rewards. Rats also received instrumental conditioning sessions during which they could lever press for CS presentations, without water delivery. Optogenetic stimulation of BLA→NAc core neurons either during these instrumental test sessions or during prior CS-water conditioning did not influence lever responding for the CS. This suggests that BLA→NAc core neurons do not influence the conditioned reinforcing effects of CS. We conclude that BLA→NAc core neurons promote cue-induced control over behavior by increasing cue-triggered anticipation of rewards, without influencing cue 'wanting'.


Author(s):  
Mohamed Farig ◽  
Katsuyuki Shimizu ◽  
Gamal El-Kassar ◽  
Waleed H. Abou El Hassan ◽  
Haruyuki Fujimaki ◽  
...  

AbstractIn the North Nile Delta of Egypt, the impacts of overplanting paddy rice on water delivery performance have not been discussed quantitatively. Further, the amount of water that could have been saved if farmers would follow the planned area is unknown. In this study, water delivery performance was assessed by comparison of actual paddy rice planting and the government’s planned conditions. For both conditions, performance indicators relating to adequacy, equity, and dependability were analyzed across six locations in conjunction with the branch canal water level in 2013 and 2014. Based on the difference between the actual water supply and planned water demand, the amount of water that could have been saved for downstream uses was calculated. The average adequacy for the investigation period was good at one location, fair at 2 locations, and poor at 3 locations in both years. Further, adequacy under both actual and planned conditions was poor in late July at all locations. The planned adequacy and dependability downstream and equity among locations improved compared to the actual condition in both years. Under the condition that paddy rice area is the upper limit planned by the government, about 12.3% and 9.6% of water could be potentially saved in each year. The difference between actual and planned water delivery performance is caused by the branch canal’s low water level. Control of overplanting paddy rice and coordination of water distribution among water user associations would improve stable water level in the canal and, eventually, water delivery performance.


Geoforum ◽  
2021 ◽  
Vol 125 ◽  
pp. 96-106
Author(s):  
Sara Beth Keough ◽  
Hadiara Yayé Saidou
Keyword(s):  

2021 ◽  
Vol 9 (2) ◽  
pp. 106-119
Author(s):  
James Anaba Akolgo

This study evaluates the Estimating the Productivity and Profitability of Rice and Pepper on the Project fields of the Irrigation Company Upper Region (ICOUR) in Ghana. Gross margin analysis was employed to estimate farm level profits at the two sites. Then, paired t-test (mean-comparison test) was applied to compare the productivity and profitability of rice and pepper farms at the two irrigation sites. Farm level data was collected from 113 (ie. 77 from Tono and 36 from Vea) crop farmers for the study. The finding shows that 0.53ha rice field and 0.34ha pepper field would yield averagely 1.6tons and 1.4tons of paddy rice and fresh pepper, respectively. This gives gross margins (profits) of Ghȼ1,041.06 and Ghȼ10,316.75 per hectare from the rice and pepper fields, respectively. The average productivity from the rice and pepper fields were 3.088Mt ha-1 and 4.286Mt ha-1, respectively. The study concludes that it is more productive and profitable to produce rice and pepper at Tono as compared to the Vea irrigation site. The gross margin was, however, higher on pepper fields as compared to the rice fields at both irrigation sites. The study recommends that crop farmers in the study areas should invest more on the production of pepper at both irrigation areas. Also, there is the need for the farmers to adopt yield-boosting practices such as the use of improved seeds, adopt good soil fertility management practices, efficient irrigation water delivery system and mechanisation services for optimum yields and higher income.


Sign in / Sign up

Export Citation Format

Share Document