Humberto van der Zel,
President of DEXCEL International






Humberto van der Zel is agricultural engineer, MSc. from the agricultural University in Wageningen, The Netherlands with forty years of experience working in developing countries in international cooperation projects related to the management of renewable natural resources and integrated rural development as researcher, as trainer , as evaluator and formulator of projects,  as expert or as project manager, in the private sector as well as in the public sector including the United Nations.
The projects he was involved in with: irrigation, drainage,  water and soil conservation,  sustainable agriculture, reforestation, water and sanitation,  treatment and reutilization of waste water, rural engineering, adult literacy programs and bilingual education, environmental education, small industries and rural micro-credit systems, evaluation of natural resources at regional and national level, formulation and execution of rural development projects, strengthening local government, decentralization; always with great emphasis on participative planning of the beneficiaries of the projects.  The countries in which he worked include: Surinam, Spain, Iraq, India, The Netherlands, Egypt, Jamaica, Peru, Bolivia, Guatemala, El Salvador and Chile.  He is presently engaged in a project related to the Mesoamerican Biological Corridor in Honduras.

Currículo Vitae Humberto van der Zel

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Willem van Immerzeel,
Founding director of DEXCEL International
Managing director DEXCEL-Peru






Willem van Immerzeel is agricultural engineer, MSc from the agricultural University in Wageningen, The Netherlands with 27 years of experience working in developing countries. A considerable part of his experience concerns project management, as team leader in several projects, project design and evaluation.
Mr. Van Immerzeel is appreciated as expert in:
• Major water management infrastructure (irrigation, drainage and flood control), Operation and Maintenance, working in Bangladesh, in hydrologically complex water management systems.
• Large scale participative people’s capacity development system of extremely poor populations in severely degraded areas. He designed and implemented a capacity development system (Pachamama Raymi) based on farmer’s knowledge management.
• Design of innovative and successful projects, effectively eliminating extreme poverty, at low cost. For example, in Bangladesh, for the ADB, Mr. Van Immerzeel designed and implemented the “lease-maintenance agreement”, which provides the Bangladesh Water Development Board with free maintenance of (sea-facing) embankments, while extremely poor flood victims are settled and receive the right of use and permanent housing on and next to the embankment, which gives them (food) security.

Mr. Van Immerzeel designed and participates in quality certifications, which implies the definition of standards based on best practices and evaluations through objective comparisons to these standards.

Curriculum Vitae Willem van Immerzeel

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Sandra Parra Riquelme
Representante de DEXCEL-International en Chile






Sandra Parra Riquelme estudió Servicio Social en la Universidad de La Frontera de Temuco, Región de La Araucanía, Chile. Cuenta con dieciséis años de experiencia en materias relacionadas con desarrollo indígena, desarrollo local, participación ciudadana y género, desempeñándose principalmente como encargada de Área de Fortalecimiento Organizacional y Capacitación la Fundación Instituto Indígena, institución de apoyo al desarrollo rural de pequeños/as campesinos/as  indígenas de La Araucanía.

Por cuatro años ocupó el Cargo de Encargada del Componente de Fortalecimiento de Actores Sociales del Programa Araucanía Tierra Viva y Co-Directora Europea Subrogante, desarrollado en convenio entre el Gobierno de Chile y la Unión Europea en 14 comunas de la Región de La Araucanía.

Actualmente se encuentra desarrollando funciones como asesora técnica de la Mesa Regional de Mujeres Rurales y de la Red de Artesanas Textiles; Jefa de Proyecto para la asesoría técnica de la Mesa Territorial Nro. 6 de Coñaripe, Región de Los Lagos, financiado por el Programa Orígenes y monitora del Proyecto de "Capacitación, Adaptación y Difusión de la Metodología Aprender de Los Mejores" en la Comuna de Coyahique, financiado por el FOSIS y ejecutado por el IDER de la Universidad de La Frontera, Temuco, Chile.