Saito K.,Africa Rice Center |
Sokei Y.,Africa Rice Center |
Sokei Y.,Japan International Cooperation Agency JICA |
Wopereis M.C.S.,Africa Rice Center
Crop Science | Year: 2012
Rice yields have stagnated in West Africa at 1 to 2 Mg ha -1 because of unfavorable rice environments and poor management practices. Interspecific rice cultivars, the New Rice for Africa (NERICA), were developed by crossing Asian rice (Oryza sativa L.) and African rice (O. glaberrima Steud.) to improve upland and lowland rice productivity in resource-poor farmers' fields. This paper provides an overview of recent studies, performed by the Africa Rice Center and its partners, on evaluation of growth and yield performance of upland and lowland NERICA cultivars and modern Asian rice cultivars including the improved upland indica cultivars often termed aerobic rice. Upland NERICA cultivars were found to lack the expected combination of superior yield potential with weed suppressive ability (WSA) and adaptation to low soil fertility, instead sharing similarity in these characteristics with their O. sativa parent WAB56-104 but remaining inferior to their O. glaberrima parent CG 14 in terms of tillering ability and WSA. Some aerobic rice cultivars were identified for high yielding ability, strong WSA, and superior adaptation to low-fertility uplands and waterlimited lowlands. Some lowland NERICA cultivars outyielded improved lowland O. sativa checks and aerobic rice cultivars in favorable lowlands, whereas they did not perform well in water-limited lowlands. The implications of these findings for future challenges for genetic improvement in West Africa are discussed. © Crop Science Society of America.
Hagiwara A.,Japan International Cooperation Agency JICA |
Ueyama M.,Ryukoku University |
Ramlawi A.,Ministry of Health |
Sawada Y.,University of Tokyo
Journal of Public Health Policy | Year: 2013
Objective: This study examines the effect of the Maternal and Child Health (MCH) handbook - a home-based health record - on women's knowledge and behavior in the Jericho and Ramallah Governorates of Palestine. Methods: This study uses a repeated, cross-sectional data set in which pre- and post-intervention situations are incorporated on two groups: those exposed and those not exposed to the MCH handbook. We employed a difference-in-difference regression analysis utilizing a pre-tested knowledge, attitude, and practice survey of women at 24 MCH 'treatment' centers (N=260, 270, pre-/post-) in comparison with the women at 6 MCH centers (N=70, 70, pre-/post-) where the MCH handbook was not released. A trained facilitator conducted a series of focus group discussions with 42 women who were the clients of MCH services and 25 health providers, both from the intervention area, to confirm the results obtained from the quantitative study. Findings: Knowledge related to MCH such as the importance of exclusive breastfeeding and how to cope with the risks of rupture of membranes during pregnancy increased among MCH handbook users, especially among less-educated women. The MCH handbook may be an effective tool for communication with health providers and husbands, for both highly educated and less-educated women during their first pregnancy. Our results suggest that although less-educated women rarely read the handbook themselves at home, they became familiar with health information and options related to MCH through personalized guidance that was provided by health providers at health facilities utilizing MCH handbook. Conclusion: The MCH handbook may be an effective tool to improve (i) communication between the client and the health provider and (ii) women's knowledge- and health-seeking behaviors related to maternal, newborn, and child health. © 2013 Macmillan Publishers Ltd.
Nakamura H.,Japan International Cooperation Agency JICA |
Ikeda N.,University of Tokyo |
Stickley A.,University of Tokyo |
Stickley A.,London School of Hygiene and Tropical Medicine |
And 2 more authors.
PLoS ONE | Year: 2011
Background: Recent analyses have suggested an accelerated decline in child mortality in Ghana since 2000. This study examines the long-term child mortality trends in the country, relates them to changes in the key drivers of mortality decline, and assesses the feasibility of the country's MDG 4 attainment. Methodology: Data from five Demographic and Health Surveys (DHS) between 1988 and 2008 and the Maternal Health Survey 2007 were used to generate two-year estimates of under-five mortality rates back to 1967. Lowess regression fitted past and future trends towards 2015. A modified Poisson approach was applied on the person-period data created from the DHS 2003 and 2008 to examine determinants of under-five mortality and their contributions to the change in mortality. A policy-modelling system assessed the feasibility of the country's MDG 4 attainment. Findings: The under-five mortality rate has steadily declined over the past 40 years with acceleration since 2000, and is projected to reach between 45 and 69 per 1000 live births in 2015. Preceding birth interval (reference: 36+ months, relative risk [RR] increased as the interval shortened), bed net use (RR 0.71, 95% confidence interval [CI]: 0.52-0.95), maternal education (reference: secondary/higher, RR 1.71, 95% CI: 1.18-2.47 for primary), and maternal age at birth (reference: 17+ years, RR 2.13, 95% CI: 1.12-4.05) were primarily associated with under-five mortality. Increased bed-net use made a substantial contribution to the mortality decline. The scale-up of key interventions will allow the possibility of Ghana's MDG 4 attainment. Conclusions: National and global efforts for scaling up key child survival interventions in Ghana are paying off - these concerted efforts need to be sustained in order to achieve MDG 4. © 2011 Nakamura et al.
Sekiya N.,Japan International Cooperation Agency JICA |
Araki H.,Yamaguchi University |
Yano K.,Nagoya University
Plant and Soil | Year: 2011
When a plant encounters spatially heterogeneous soil moisture within its root system, usually drier surface and moister subsurface soils, water can move between these layers through the root system, a plant process known as hydraulic lift or redistribution. The water thus transferred is available not only for the plant itself but also for its neighbors. We examined application of this process as a possible biological irrigation tool. As 'donors', we used perennial forage plants with their shoots removed to minimize the effect of light-interception by them on the 'receiver' plants growing alongside them. In a horizontally split-root experiment, where an upper container was filled with sand and a lower one with water, superior donor species could maintain the upper sand in a fully hydrated condition for several weeks, increasing stomatal conductance in the receivers. The effects were also confirmed in a water-limited agricultural field, as significant differences were found in canopy temperature and yield in neighboring crop plants in the presence or absence of donor root systems. These results suggest that deep-rooting associate plants with their shoots removed function as an irrigation tool and improve crop production in water-scarce environments. © 2010 Springer Science+Business Media B.V.
Kurokawa K.,Japan International Cooperation Agency JICA
Studies in Regional Science | Year: 2011
The Japanese government announced commitment to African growth including support for the OVOP movement, which originated in Oita Prefecture, at TICAD (Tokyo International Conference on African Development) VI in 2008. At present, twelve African countries including Kenya, Tanzania and Malawi are expanding the OVOP movement. The Thai government introduced the OVOP movement and scaled it up to a One Tambon One Product (OTOP) movement, strongly guided by government initiative. In this paper, we examine the impacts of the movement in the Northeast provinces of Thailand. OTOP encourages cottage producers through integration of power from all related government agencies. The movement was started by government initiatives, but gradually brought the concept of "self reliance" to the village people. In addition, OTOP has provided an "OTOP five star logo" so products gain new markets. The authors conducted field surveys in Northeast Thailand to understand the effectiveness of the movement. This paper presents the survey results with the specific data and interview responses from the OTOP producers. Finally, we identified some important factors in the movement. Simple regression analysis revealed a strong correlation between OTOP income level, member's age, car ownership and strong leadership. However, no significant relationships between income and education level or motivation of participation were observed. These findings are indispensable as policy implications for the African OVOP movement.
Takano J.H.,Tokyo Dental College |
Takano J.H.,Japan International Cooperation Agency JICA |
Yakushiji T.,Tokyo Dental College |
Kamiyama I.,Tokyo Dental College |
And 4 more authors.
International Journal of Oral and Maxillofacial Surgery | Year: 2010
The aim of this study was to analyze and describe the intrapapillary capillary loops (IPCL), which are a feature of early oral neoplastic lesions, using a narrowband imaging (NBI) system. Forty-one patients (26 men, 15 women; mean age, 52.34 years; range, 23-83 years) presenting with non-neoplastic or neoplastic lesions, and normal cases, were examined using the prototype Evis Lucera Spectrum (Olympus Co.). The images were analyzed and an IPCL classification was devised. All normal cases (n = 10) had regularly distributed capillary loops of the same shape (type I). Non-neoplastic lesions (n = 8) had mild changes of the capillary loops (types II and III) and neoplastic lesions (n = 23) were irregularly distributed and had several loop shapes (types III and IV). The microvascular organization of non-neoplastic lesions was notably different from that of neoplastic lesions. A brownish area was found in five cases of early carcinoma. The narrowband imaging system is a potential approach for clinically analyzing microvascular organization and IPCL. It could be useful for diagnosing oral squamous cell carcinoma at an earlier stage and for determining the margin of resection. © 2010 International Association of Oral and Maxillofacial Surgeons.
Sakisaka K.,Takemi Program in International Health |
Sakisaka K.,University of Tokyo |
Jimba M.,University of Tokyo |
Hanada K.,Japan International Cooperation Agency JICA
BMC International Health and Human Rights | Year: 2010
Background. In 2008, approximately 8.8 million children under 5 years of age died worldwide. Most of these deaths occurred in developing countries, but little is known about poor mothers' care-seeking behaviors for their children. We examined poor mothers' care-seeking behaviors in response to childhood illness, and identified factors affecting their choices. We also assessed mothers' perception of the medical services and their confidence in the health care available for their children. Methods. We carried out a community-based cross-sectional study with structured questionnaires. Participants were 756 mothers and their young children (0-23 months) in Nandaime municipality, Granada province, Nicaragua. We took the children's anthropometric measurements and we assessed the mothers according to their income. We divided them into 3 global absolute poverty categories (income: <1 USD/day, 1-2 USD/day, 2 USD/day), and 4 quintile. Results. When a child showed symptoms of illness, most mothers (75%) selected public health facilities as their first choice. More than half (58%) were satisfied with the medical services, but the poorest mothers expressed more dissatisfaction (p = 0.003), when we divided the participants into 4 quintiles groups according to their income. In the poorest group, the main reasons for dissatisfaction were cost (46.6%), and distance to the facilities (25.8%). Almost half (41.3%) of mothers lacked confidence in the health care offered to their child, while most of the wealthiest mothers (75.7%) did have confidence in it (p = 0.001). The poorest mothers showed greater interest in health education than the wealthiest (86.2% vs. 77.8%) (p = 0.015). We found that poor mothers (2 USD/day) changed their second choice for care in a positive direction. Factors affecting the change in second choice were the child having symptoms of respiratory disease (AOR, 2.51; 95% CI, 1.28-4.90, p = 0.007), visiting health post as the first choice (AOR, 2.11; 95% CI, 1.26-3.53, p = 0.005), and experiencing a child death in the past (AOR, 2.05; 95% CI, 1.15-3.68, p = 0.016). Child stunting, mother's level of education, and past participation in health education programs did not affect. Conclusions. Determination of the severity of a childhood disease is a difficult task for mothers. The national rural health system was functioning, yet the services were often limited. We should consider the feasibility of providing a more effective primary care system for the poor. To encourage mothers' care-seeking behaviors in poor settings, the referral system and the social safety net need to be strengthened. Poor mothers need further education about the danger signs of childhood illness. © 2010 Sakisaka et al; licensee BioMed Central Ltd.
Kato H.,Hokkaido University |
Watanabe J.,Japan International Cooperation Agency JICA |
Watanabe J.,The Japanese Red Cross College of Nursing |
Nieto I.M.,Hospital Central |
And 2 more authors.
Transactions of the Royal Society of Tropical Medicine and Hygiene | Year: 2011
A molecular epidemiological study was performed using FTA card materials directly sampled from lesions of patients with cutaneous leishmaniasis (CL) in the state of Lara, Venezuela, where causative agents have been identified as Leishmania (Viannia) braziliensis and L. (Leishmania) venezuelensis in previous studies. Of the 17 patients diagnosed with CL, Leishmania spp. were successfully identified in 16 patients based on analysis of the cytochrome b gene and rRNA internal transcribed spacer sequences. Consistent with previous findings, seven of the patients were infected with L. (V.) braziliensis. However, parasites from the other nine patients were genetically identified as L. (L.) mexicana, which differed from results of previous enzymatic and antigenic analyses. These results strongly suggest that L. (L.) venezuelensis is a variant of L. (L.) mexicana and that the classification of L. (L.) venezuelensis should be reconsidered. © 2011 Royal Society of Tropical Medicine and Hygiene.
Otsuka N.,North Japan Port Consultants |
Izumiyama K.,North Japan Port Consultants |
Furuichi M.,Japan International Cooperation Agency JICA
Proceedings of the International Conference on Port and Ocean Engineering under Arctic Conditions, POAC | Year: 2013
This paper presents the results of an investigation on the feasibility of shipping via the Northern Sea Route (NSR). Recent commercial voyage records in the NSR show that the shipping season starts in late June and continues through late November. Although sea ice concentration varies spatially and temporally, average ship speed transiting the route is relatively constant at about 10 knots through the season in recent year's voyages, except for the very beginning of the season. Shipping costs were evaluated for three types of cargoes of iron ore, LNG and frozen fish. Data from recent NSR shipping of these cargoes were included in the cost evaluation. Russian regulations were considered in calculating icebreaker escort fee. Shipping costs via conventional shipping route such as the Suez Canal route were also evaluated for comparison.
Kawanishi M.,Japan International Cooperation Agency JICA |
Anggarendra R.,JICA Project of Capacity Development for Climate Change Strategies in Indonesia |
Farid F.,JICA Project of Capacity Development for Climate Change Strategies in Indonesia
Journal of Agricultural Meteorology | Year: 2016
Using so-called KATAM, a crop calendar being promoted by the Indonesian government for agricultural risk management, as a case study, the present paper aims to identify factors that affect the extent of use among farmers of meteorological information. To this end, it employed structured interviews with farmers (n = 422) in three different regencies in Java. It also conducted follow-up surveys in two villages during the recent drought to understand how meteorological information was used at the farmer level. This study finds that the importance of meteorological information, as viewed by farmers relative to other factors that also influence farming decisions, differs by location. It is therefore important to understand the contexts of agricultural decision-making in order to exploit the potential benefits of meteorological information. While this study finds a decreasing significance of local knowledge of weather forecasts, it points to the importance of the role of extension workers to help farmers in understanding the implications of meteorological information on their agricultural production and livelihoods. This study also finds that education is the most significant factor for differentiating the use of KATAM, which indicates that the tool may have uneven effects, potentially exacerbating existing inequalities. © 2016, The Society of Agricultural Meteorology of Japan. All rights reserved.