Results 121 to 130 of about 3,187,628 (306)

Evidence for strategic egg production in a hermaphroditic cestode [PDF]

open access: yes, 1998
The cestode Schistocephalus solidus is a simultaneous hermaphrodite that grows in 2 intermediate hosts and reproduces rapidly within a few days in the gut of a bird. Reproduction takes place by self- or cross-fertilization.
Lukas Schärer,   +2 more
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Do outgrower schemes enhance technology adoption and productivity? Evidence from maize farmers in Northern Ghana

open access: yesAgribusiness, EarlyView.
Abstract Nucleus outgrower schemes are contractual arrangements where well‐resourced large‐scale farmers (nucleus farmers) are empowered by development support agencies to take charge of smallholder farmers, by providing them with market access and the necessary training on agronomic practices and farm inputs for production.
Dominic Tasila Konja, Awudu Abdulai
wiley   +1 more source

Perceptions of family functioning and self-concept in adolescent anorexia nervosa

open access: yes, 2006
Authors have highlighted the importance of the family for the development of positive self-concept and identity, not only in mental health research but also in various developmental and social psychology fields.
Halse, Christine   +3 more
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Can outsourcing pest and disease control help reduce pesticide expenditure? Evidence from rice farmers

open access: yesAgribusiness, EarlyView.
Abstract Outsourcing pest and disease control (PDC) has grown rapidly worldwide, especially in developing countries. Although numerous studies have investigated various advantages of outsourcing PDC, little is known about its impact on pesticide expenditure.
Pengcheng Wang   +2 more
wiley   +1 more source

Reproductive assurance through self-fertilization does not vary with population size in the alien invasive plant Datura stramonium

open access: yes, 2007
Autonomous self-fertilization is suggested to be associated with invasiveness in plants because it offers reproductive assurance when there is a shortage of suitable mates or pollinators.
van Kleunen, Mark   +6 more
core   +1 more source

Circularity, Sustainability, and the Quality of Coffee Sold via Vending Machines: What Do Italian Consumers Prefer?

open access: yesAgribusiness, EarlyView.
ABSTRACT Vending is an important sector in the daily lives of many people, and coffee is the most frequently consumed product in the European market. Like many other sectors, vending is responding to the challenge of sustainable development by taking various actions, such as offering increasingly ecologically sound coffee while maintaining/improving ...
Alberto Bertossi   +2 more
wiley   +1 more source

Opening doors? Professional self-concept of pre-service teachers in relation to the inclusion of students with disabilities

open access: yes, 2006
Current research indicates that a key to successful inclusive practices lies in teacher attitudes and preparation. It is proposed that effectively including students with disabilities in mainstream classrooms will be dependent on the focus and content of
Healey, Jean B., Marder, Kurt
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Quality of plant products grown with manure fertilization [PDF]

open access: yes, 1996
The meeting discussed results of food quality obtained by different long-term trials in Switzerland (DOC trial), Germany (Darmstadt) and Sweden (K trial etc.).

core  

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