Maternal hydronephrosis in normal pregnancy in Bayelsa state, South-South Nigeria

Background: Hydronephrosis is a common finding in normal pregnancy. It is the dilatation of the renal calyces and pelvis by urine, as a result of obstruction of the outflow of urine distal to the renal pelvis. It is usually physiological. The objective of this study was to determine the prevalence of maternal hydronephrosis, and correlate it with age, parity and gestational age in normal pregnancy in Bayelsa State, Nigeria.Methods: This prospective study was conducted at the obstetrics and gynaecology, and radiology departments of the two tertiary hospitals in Bayelsa State, Nigeria, over a six-month period. Sonographic measurements of pelvicalyceal diameters of 400 consecutive normal pregnant women were done, after written informed consent. Data were entered into a pre-designed proforma, and analysed using Statistical Product and Service Solutions (SPSS) version 25.0. Results were presented in frequencies and percentages for categorical variables; mean and standard deviation for continuous variables; Student’s t-test to compare sample means; and Chi-square for associations.Results: Four hundred pregnant women were scanned. Pelvicalyceal dilatation was present in 144 (36%) women; it affected one kidney in 108 (27%) women; while in 36 (9%) women, the two kidneys were affected. Renal calculi were present in 16 (4%) women. The right kidney was affected in 12 (3%) women and the left kidney in 4 (1%) women.Conclusions: The prevalence of hydronephrosis in this study is lower than that from many centres. Pelvicalyceal dilatation was more on the right, and the degree of dilatation increased with increasing gestational age

Economic evaluation of smoking cessation in Ontario's regional cancer programs.

Quitting smoking after a diagnosis of cancer results in greater response to treatment and decreased risk of disease recurrence and second primary cancers. The objective of this study was to evaluate the potential cost-effectiveness of two smoking cessation approaches: the current basic smoking cessation program consisting of screening for tobacco use, advice, and referral; and a best practice smoking cessation program that includes the current basic program with the addition of pharmacological therapy, counseling, and follow-up. A Markov model was constructed that followed 65-year-old smokers with cancer over a lifetime horizon. Transition probabilities and mortality estimates were obtained from the published literature. Costs were obtained from standard costing sources in Ontario and reports. Probabilistic and deterministic sensitivity analyses were conducted to address parameter uncertainties. For smokers with cancer, the best practice smoking cessation program was more effective and more costly than the basic smoking cessation program. The incremental cost-effectiveness ratio of the best practice smoking cessation program compared to the basic smoking cessation program was $3367 per QALY gained and$5050 per LY gained for males, and $2050 per QALY gained and$4100 per LY gained for females. Results were most sensitive to the hazard ratio of mortality for former and current smokers, the probability of quitting smoking through participation in the program and smoking-attributable costs. The study results suggested that a best practice smoking cessation program could be a cost-effective option. These findings can support and guide implementation of smoking cessation programs

Robust free-breathing SASHA T1 mapping with high-contrast image registration

Comparison of free-breathing SASHA-VFA images with navigator gating, normal image registration, and high-contrast image registration. (GIF 4289 kb

Tracking antenna arrays for near-millimeter waves

A two-dimensional monolithic array has been developed that gives the elevation and azimuth of point source targets. The array is an arrangement of rows and columns of antennas and bismuth bolometer detectors on a fused quartz substrate. Energy is focused onto the array through a lens placed on the back side of the substrate. At 1.38 mm with a 50 mm diameter objective lens, the array has demonstrated a positioning accuracy of 26 arcmin. In a differential mode this precision improves to 9 arcsec, limited by the mechanics of the rotating stage. This tracking could be automated to a fast two-step procedure where a source is first located to the nearest row and column, and then precisely located by scanning. With signal processing the array should be able to track multiple sources

Understanding farmers’ indicators in climate-smart agriculture prioritization in the Southern Agricultural Growth Corridor of Tanzania (SAGCOT).

In order to increase the uptake of climate-smart agriculture (CSA) technologies, it is important to understand the contexts in which farmers operate. Farmers use different indicators to decide whether or not to implement, what to implement, and where to implement specific technologies. Identifying and understanding such indicators can be helpful to efforts aiming to scale out adoption. The purpose of this study was to identify indicators that farmers use to prioritize agricultural innovations, in general, and CSA, in particular. Kilolo and Mbarali Districts lie in the Southern Agricultural Growth Corridor of Tanzania. Four participatory workshops, in the form of focus group discussions, were conducted in these two districts. In each district, a separate workshop was held with farmers from each agro-ecological zone (AEZ). Separate workshops were held with farmers and experts to explore differences between stakeholders and across the districts regarding perceptions of the status of soil fertility, prioritized practices, and ranking of indicators for prioritizing practices. Characterization of the AEZ, prioritization of practices, identification of indicators for prioritizing CSA, and selection of practices for demonstration as well as sites for the demonstration plots were done separately with men and women groups. Practices were prioritized using pairwise ranking, while indicators were scored on a rating scale from least important (1) to most important (5). Results showed that, both in Kilolo and Mbarali Districts, farmers perceive the status of soil fertility as poor. Up to 60 % of the workshop participants were not satisfied with the status of soil fertility in their farms. More than 80% of workshop participants in each of the four workshops reported that they practiced burning. The main reasons for burning were to save labour and time and to reduce crop–livestock conflict. The men’s group in the upland zone in Mbarali District ranked mulching, water harvesting, improved varieties, and crop rotation as the most important practices in respective order. In the lowlands, both men and women groups selected irrigation, chemical fertilizer, and crop rotation as most relevant practices. Awareness and use of the practices was low among participants in the two workshops. The most prioritized practices by the women’s group in the uplands, Kilolo District, were improved breeds and improved varieties. Intercropping was the least prioritized practice. The men’s group prioritized improved varieties and pesticides application, while irrigation and fertilizer application ranked lowest. In the lowlands, men’s and women’s groups prioritized irrigation, inorganic fertilizer and improved varieties as most important. Mulching and herbicides ranked as least prioritized. In addition, the men’s group from the lowland zone ranked pesticide application among the most important practices, while farmyard manure and zero grazing were ranked as least important. Important indicators that farmers identified to prioritize agricultural practices across the two districts included yield, income, cost, labour, availability of inputs, the status of soil fertility, and knowledge about the practices. Several practices were selected for the proposed CSA demonstration plots. The women’s group in the uplands zone in Mbarali prioritized improved crop varieties, water harvesting, mulching, and fertilizer application. The men’s group chose irrigation, herbicides, inorganic fertilizers, and seed selection. In the lowlands, improved crop varieties, inorganic fertilizer, farmyard manure, and mulching were selected by women. Men preferred seed preparation, right use of fertilizers (i.e., rate and type), integrated pest management, and improved storage. The selected important practices for demonstration in the uplands in Kilolo District were minimum tillage, soil testing, improved varieties, fertilizer application, and irrigation. Farmers in the lowlands chose production of clean seeds of different crops, such as tomatoes, beans, maize, and chillies. In addition, they were interested in learning about fertilizer application, pesticides application, and preparation and application of compost manure. The findings of this research have several implications for policy. First, there is need to increase awareness of farmers about CSA practices, particularly those that they prioritize. The finding that farmers perceive poor soil fertility but do not prioritize soil fertility management practices implies the need to promote adoption of such technologies. Thirdly, a bottom-up approach that involves working with farmers to prioritize agricultural practices suitable for their specific AEZ and preferred by either the men or women is important to inform investment of limited resources to increase food security and resilience to climate risks while minimizing trade-offs. The findings highlight indicators that influence farmers’ adoption of agricultural practices as well as constraints to implementation

Climate Smart Agriculture Rapid Appraisal (CSA-RA) report from the Southern Agricultural Growth Corridor of Tanzania (SAGCOT)

A Climate Smart Agriculture Rapid Appraisal (CSA-RA) was carried out by CIAT in collaboration with Sokoine University of Agriculture (SUA) for the Southern Agricultural Growth Corridor of Tanzania (SAGCOT) in September 2014. The CSA-RA aimed to assess within and between district variations in farming systems, agricultural management practices, challenges for current agricultural practices, and climate vulnerability, in order to inform targeting of climate smart agriculture (CSA). The CSA-RA used key-informant interviews, participatory workshops, transect walks, farmer interviews, as well as gender-disaggregated methods to gather information on important agriculture-related features and constraints faced by farmers. The CSA-RA from the SAGCOT was carried out in four districts: Bagamoyo, Kilosa, Kilolo and Mbarali

Workshop report: Playing out transformative adaptation in Usambara, Tanzania

This report documents the information collected during the participatory workshop hosted by The CGIAR Research Program on Climate Change, Agriculture and Food Security (CCAFS) in partnership with the Selian Agricultural Research Institute (SARI) and Lushoto District Office in the CCAFS site of Usambara Tanzania. This workshop was conducted as part of the CCAFS project “Playing out transformative adaptation in CCAFS benchmark sites in East-Africa: ‘When, where, how and with whom?’ which seeks to identify and understand, through integrated agricultural research, the adaptation process in the CCAFS benchmark site of Usambara, Tanzania. The workshop included farmers from various villages in the CCAFS site, who discussed agricultural practices and perceptions of climate change/variability. The workshop started off with an introduction/icebreaker, after which historical calendars, a discussion of crop suitability and baseline data and gender questions followed. Finally a vision for the future was made, in which the groups were asked to say what they would like to see in the future concerning climate change, food security and gender. The introduction/icebreaker and the general presentation of results were done in a large group but smaller groups were formed to do the historical calendars and to discuss crop suitability and baseline data as well as the gender questions. Most of the small groups were divided by gender, typically with two men’s groups and two women’s groups. In general it can be stated that the farmer is aware of a changing climate and the (negative) consequences this brings about. Furthermore there are differences in perspectives between men and women on the division of tasks and on the household decisionmaking process. Concerning the vision of the future, many farmers let us know that they would like to see more extended information and capacitation on climate change adaptation and mitigation strategies