175 research outputs found
Creating Policy Space for Pastoralism in Kenya
This paper reflects on the work of the Ministry of State for Development of Northern Kenya and other Arid Lands between its formation in April 2008 and the elections of March 2013. The paper begins by summarising the historical, political and institutional contexts within which the Ministry was created, as well as the multiple narratives that have driven policy in Kenya’s drylands over time (section 1). It explains some of the policy choices the Ministry made in interpreting its mandate and shaping the policy agenda. The paper reflects on the response of different actors to the policy space opened up by the establishment of the Ministry, and looks at how it implemented its mandate and its day-to-day engagement with others. The authors discuss the institutional framework in more detail and the steps required to strengthen it further. The paper concludes with reflections and recommendations.DFI
Effect of ethylene on postharvest strawberry fruit tissue biochemistry
The effect of continuous ethylene supplementation (50 µL L-1) on cold-stored strawberry fruit physiology and biochemistry, including phytohormone (abscisic acid) metabolism was investigated. In comparison with control fruit which exhibited high sucrose and malic acid contents during storage, ethylene-treated fruits showed increased respiration, sucrose hydrolysis and concomitant reducing sugars accumulation. Ethylene supplementation did not have any effect on phenolic profile. ABA biosynthesis, in both flesh and achenes, was promoted by ethylene. The results herein suggest that controlling ethylene after harvest could suppress senescence and extend shelf-life
Enhancing the provision of livestock marketing information in Somaliland
The economy of Somaliland depends on livestock, which employs about 70% of the population and contributes approximately 60% of GDP and 85% of export earnings. The principal export markets are the Kingdom of Saudi Arabia, Yemen, Oman, Egypt and the United Arab Emirates. Exports to these markets have shown a steady growth in the last four years. Despite recent growth in export volumes, livestock trade takes place in an environment characterized by an underdeveloped legal framework, contract uncertainty and high information costs among other factors. Trade is guided by informal traditional institutions, customs and religious practices that serve as alternatives to formal contracting. The Livestock Marketing Information System (LMIS) was initiated in 2007 to address the constraint of high market information cost. The purpose of the LMIS is to provide timely current information to livestock producers, traders, government officials and other development partners. It collects and disseminates data from three livestock markets (Hargeisa, Burao and Tog Wajaale), the port of Berbera and crossborder market of Lowya Caddo. It is implemented by the Somaliland Chamber of Commerce, Industries and Agriculture, in collaboration with the Ministry of Livestock, Ministry of Commerce, Ministry of Finance, the municipalities of Hargeisa, Burao and Tog Wajaale, with the technical support of Terra Nuova and funding from Danish Government. Although several agricultural market information systems exist in developing countries, the validity, reliability and impact of information they generate vary and depend on a number of factors. Some of these include technology used, technical capability of personnel, protocol employed in data capturing, management and transmission among others. Despite the Somaliland LMIS being in operation for eight year, there has been no attempt to evaluate its validity and reliability. To redress this concern, this study provides an appraisal of the validity of the Somaliland LMIS as a decision making tool for stakeholders, identifies its strengths and weaknesses and offers recommendations for improvement. The validity of the system was assessed by focussing on three areas. First, by evaluating the proportion of total Somaliland livestock exports that are traded through the monitored markets. This enabled understand how the LMIS covers the target population. Second, by analysing the extent to which the trends in volumes of livestock traded in monitored markets is explained by shocks and opportunities in both local and international markets; and third by evaluating the type of trends that exist in livestock prices and the main drivers of these trends. Data used were obtained from the LMIS database, comprising weekly traded volumes, weekly price data for different grades of small ruminants, cattle and camels, and weekly export trader numbers for a period 2007–12. The study shows that the LMIS has provided valid data and information over time, noting that the data series exhibited direct and strong relations with shocks and opportunities that have occurred in local and international markets. The LMIS’s coverage has been high and consistent for small ruminants, although modest for cattle and camels. A vector autoregressive model applied to quantify the effects of seasonal and occasional factors on price revealed that whereas prices of small ruminants and camels have exhibited secular and upwards trends over time, those of cattle have remained the same. In addition, market structure, seasonal effects as well as shock events were found to only affect the prices of small ruminants. The report presents preliminary recommendations for public and private sectors, with some predicated on further study
Perkuatan Lereng Pada Menara Sutt Sta 19 +255 Jalan Tol Semarang – Solo Seksi Tinalun – Lemah Ireng
The Final Task Slope Reinforcement on SUTT Tower at Sta 19 +255 on Tinalun –Lemah Ireng Section of Semarang – Solo Toll Road describe analysis slope stability in Semarang – Solo toll road project. Development toll road project make slopes at STA 19 +225 beside SUTT tower has a topography with high 61 meter and very step. High rainfall with clay stone layer position feared can make the slope the site vulnerable to landslides.Avalanche simulations to determine the condition of existing safety factor and areas of landslides in two ways: manual (Fellenius) and computer software (PLAXIS V 8.2). Modeling topographic slope in accordance with the existing field conditions soil type was determined by using data stratification boring and the value of existing SPT.Analysis of first treatment planned make terracing with tilt 60º and cutting on peak slopes. Then the slopes gave protection bored piles with a diameter of 0,6 meters. Retrofitting is made on the side of the SUTT tower and at the base of the slopes. The depth of the bored pile on the side of the tower 30 meters from base SUTT tower around SUTT tower like sheet pile. While the depth of bored pile on the base slopes 8 meters listed only in line side toll road. Figures obtained from alternative safe handling is calculated and compared the results with manual (Fellenius) and computer software (PLAXIS V 8.2). The numerical value of safe (safety factor) with PLAXIS before treatment 1,48. After treatment which is calculated of 1.62. Safe rate calculation results obtained from the calculation manual (Fellenius) is not much different from the calculations with computer software (PLAXIS V 8.2). In condition before treatment is 1,36. After given bored pile protection numerical value of safe (safety factor) increase to 1,54. Ratio increasing safety factor before and after treatment around 0,16. For Analysis estimated cost planning total cost need for make protection Slope Reinforcement on SUTT Tower at Sta 19 +255 on Tinalun –Lemah Ireng Section of Semarang – Solo Toll Road Rp 4.037.000.000,00 (Four Bilion Thirty Seven Milion Rupiah)
Thermal Transient Measurements of an Ultra-Low-Power MOX Sensor
This paper describes a system for the simultaneous dynamic control and thermal characterization of the heating of an Ultra Low Power (ULP) micromachined sensor. A Pulse Width Modulated (PWM) powering system has been realized using a microcontroller to characterize the thermal behavior of a device. Objectives of the research were to analyze the relation between the time period and duty cycle of the PWM signal and the operating temperature of such ULP micromachined systems, to observe the thermal time constants of the device during the heating phase and to measure the total thermal conductance. Constant target heater resistance experiments highlighted that an approximately constant heater temperature at regime can only be obtained if the time period of the heating signal is smaller than 50 s. Constant power experiments show quantitatively a thermal time constant that decreases during heating in a range from 2.3 ms to 2 ms as a function of an increasing temperature rise between the ambient and the operating temperature. Moreover, we calculated the total thermal conductance. Finally, repeatability of experimental results was assessed by guaranteeing the standard deviation of the controlled temperature which was within C in worst case conditions
Water and Beverage Consumption among a Nationally Representative Sample of Children and Adolescents in the United Arab Emirates.
There are limited studies examining water consumption among individuals in hot climates. We assessed the daily total water intake from plain water, other beverages, and food in a nationally representative sample of children and adolescents aged 6-18 years in the United Arab Emirates. Total water intake was compared against the recommendations of the Institute of Medicine and the European Food Safety Authority. Sociodemographic information, 24 h dietary recall, physical activity levels, and anthropometric data were collected from 527 participants. The mean ± SE of total water intake was 1778.4 ± 33.8 mL/day. Plain drinking water was the largest contributor to total water intake (51.6%), followed by food (27.3%). Sugar-sweetened beverages constituted 13.9% of water intake. The proportion of participants who met the Institute of Medicine recommendations ranged from 15% (males aged 14-18) to 25% (children aged 6-8). The proportion of participants who met the European Food Safety Authority recommendations ranged from 31% (females aged 14-18) to 36% (males aged 14-18). The water-to-energy ratio was 1.0-1.15 L/1000 kcal, meeting recommendations. The majority of participants failed to meet water intake recommendations, highlighting the need for targeted interventions to promote increased water consumption among children and adolescents
Antimicrobial resistance patterns and risk factors associated with salmonella spp. Isolates from poultry farms in the east coast of peninsular malaysia: A cross-sectional study
The burden of antimicrobial use in agricultural settings is one of the greatest challenges facing global health and food security in the modern era. Malaysian poultry operations are a relevant but understudied component of epidemiology of antimicrobial resistance. We aimed to identify the prevalence, resistance patterns, and risk factors associated with Salmonella isolates from poultry farms in three states of East Coast Peninsular Malaysia. Between 8 February 2019 and 23 February 2020, a total of 371 samples (cloacal swabs = 259; faecal = 84; Sewage = 14, Tap water = 14) was collected from poultry operations. Characteristics of the sampled farms and associated risk factors were obtained using semi-structured questionnaires. Presumptive Salmonella spp. isolates were identified based on colony morphology with subsequent biochemical and PCR confirmation. Susceptibility of isolates was tested against a panel of 12 antimicrobials using disk diffusion method. Our findings revealed that the proportion of Salmonella spp.-positive isolates across sample source were as following: cloacal swab (46.3%, 120/259); faecal (59.5%, 50/84); in tap water (14.3%, 2/14); and in sewage sample (35.7%, 5/14). Isolates from faecal (15.5%, 13/84), cloacal (1.2%, 3/259), and sewage (7.1%, 1/14) samples were significantly resistant to at least five classes of antimicrobials. Resistance to Sulfonamides class (52%, 92/177) was predominantly observed followed by tetracycline (39.5%, 70/177) and aminoglycosides (35.6%, 63/177). Multivariate regression analysis identified intensive management system (OR = 1.55, 95% CI = 1.00–2.40) as a leading driver of antimicrobial resistance (AMR) acquisition. A prevalence of resistance to common antimicrobials was recorded for sulfamethoxazole (33.9%), tetracycline (39.5%), and trimethoprim-sulphamethoxazole (37.9%). A close association between different risk factors and the prevalence of AMR of Salmonella strains sug-gests a concern over rising misuse of veterinary antimicrobials that may contribute to the emergence and evolution of multidrug-resistant pathogen isolates. One Health approach is recommended to achieve a positive health outcome for all species
The X-Gamma Imaging Spectrometer (XGIS) onboard THESEUS
A compact and modular X and gamma-ray imaging spectrometer (XGIS) has been
designed as one of the instruments foreseen on-board the THESEUS mission
proposed in response to the ESA M5 call. The experiment envisages the use of
CsI scintillator bars read out at both ends by single-cell 25 mm 2 Silicon
Drift Detectors. Events absorbed in the Silicon layer (lower energy X rays) and
events absorbed in the scintillator crystal (higher energy X rays and
Gamma-rays) are discriminated using the on-board electronics. A coded mask
provides imaging capabilities at low energies, thus allowing a compact and
sensitive instrument in a wide energy band (~2 keV up to ~20 MeV). The
instrument design, expected performance and the characterization performed on a
series of laboratory prototypes are discussed.Comment: To be published in the Proceedings of the THESEUS Workshop 2017
(http://www.isdc.unige.ch/theseus/workshop2017.html), Journal of the Italian
Astronomical Society (Mem.SAIt), Editors L. Amati, E. Bozzo, M. Della Valle,
D. Gotz, P. O'Brien. Details on the THESEUS mission concept can be found in
the white paper Amati et al. 2017 (arXiv:171004638) and Stratta et al. 2017
(arXiv:1712.08153
Impact of Skills for Change Program on metabolic control, diet and physical activity levels in adults with type 2 diabetes: A cluster randomized trial
Background: Type 2 diabetes mellitus is highly prevalent in the Arab Gulf countries. Despite this, limited culturally-adapted lifestyle intervention studies have been conducted in this region. Methods: In this culturally adapted 12-month cluster randomized trial, 382 patients with type 2 diabetes, aged 20–70 years were recruited from 6 public healthcare centers (3 interventions and 3 controls) in Al Ain, United Arab Emirates. The primary outcome of this study was a change in hemoglobin A1c (HbA1c). The secondary outcomes were Body Mass Index (BMI), low-density lipoprotein (LDL), high-density lipoprotein (HDL), triglycerides, total cholesterol, dietary intake, and physical activity levels. A diet and physical activity intervention, guided by the social cognitive theory, was delivered individually and in group format to the intervention group. The control group continued receiving only their usual diabetes management care. The data were collected at baseline and 1 year after participation. Results: The mean baseline HbA1c levels of the control and the intervention groups were 7.45 ± 0.11% and 7.81 ± 0.11%, respectively. At the end of the 12-month intervention, there was no significant difference in the changes of mean HbA1c between the intervention and the control groups. On the other hand, BMI and daily caloric intake were significantly decreased in the intervention compared to the control group by 1.18 kg/m2 (95% CI: -1.78 − -0.60) and 246 kcal (95% CI: -419.52 − -77.21), respectively, after controlling for age, gender, education, marital status, duration since diabetes diagnosis, diabetes treatment, treatment clinic, and baseline values. Sitting time during the week-end was significantly lower, difference 52.53 minutes (95% CI: 93.93 − -11.14). Conclusions: This community-based lifestyle intervention for patients with baseline HbA1c <8% did not result in a significant decrease of HbA1c but reduced caloric intake, body weight, and weekend inactivity after controlling for the covariates. Trial registration: This trial was registered on February 11, 2020 with Clinicaltrials.gov (NCT04264793)
Data-driven malaria prevalence prediction in large densely populated urban holoendemic sub-Saharan West Africa
Over 200 million malaria cases globally lead to half-million deaths annually. The development of malaria prevalence prediction systems to support malaria care pathways has been hindered by lack of data, a tendency towards universal "monolithic" models (one-size-fits-all-regions) and a focus on long lead time predictions. Current systems do not provide short-term local predictions at an accuracy suitable for deployment in clinical practice. Here we show a data-driven approach that reliably produces one-month-ahead prevalence prediction within a densely populated all-year-round malaria metropolis of over 3.5 million inhabitants situated in Nigeria which has one of the largest global burdens of P. falciparum malaria. We estimate one-month-ahead prevalence in a unique 22-years prospective regional dataset of > 9 × 10^{4} participants attending our healthcare services. Our system agrees with both magnitude and direction of the prediction on validation data achieving MAE ≤ 6 × 10^{-2}, MSE ≤ 7 × 10^{-3}, PCC (median 0.63, IQR 0.3) and with more than 80% of estimates within a (+ 0.1 to - 0.05) error-tolerance range which is clinically relevant for decision-support in our holoendemic setting. Our data-driven approach could facilitate healthcare systems to harness their own data to support local malaria care pathways
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