A5073395806- Insect-Plant Interactions and Control
- Research on scale insects
- Insect behavior and control techniques
- Parasite Biology and Host Interactions
- Agricultural pest management studies
- Entomological Studies and Ecology
- biodegradable polymer synthesis and properties
- Hemiptera Insect Studies
- Insect and Arachnid Ecology and Behavior
- Lepidoptera: Biology and Taxonomy
- Insect Pest Control Strategies
- Plant and animal studies
- History and Developments in Astronomy
- Biological Control of Invasive Species
- Insect and Pesticide Research
- Forest Insect Ecology and Management
- Coleoptera Taxonomy and Distribution
- Insects and Parasite Interactions
- Insect Resistance and Genetics
- Orthoptera Research and Taxonomy
- Diptera species taxonomy and behavior
- Fossil Insects in Amber
- Synthesis and properties of polymers
- Entomopathogenic Microorganisms in Pest Control
- Mosquito-borne diseases and control
International Institute of Tropical Agriculture
2008-2024
Ab Medica (Italy)
2009-2012
International Institute of Tropical Agriculture
1988-2010
ETH Zurich
1997-2009
Bern University of Applied Sciences
2009
École Polytechnique Fédérale de Lausanne
1978-2007
University of Zurich
2004
Swiss Federal Institute of Aquatic Science and Technology
2002
Institute of Polymers
1983-2001
Pontificia Universidad Católica de Valparaíso
1999
With a growing world population and increasingly demanding consumers, the production of sufficient protein from livestock, poultry, fish represents serious challenge for future. Approximately 1,900 insect species are eaten worldwide, mainly in ...Read More
ADVERTISEMENT RETURN TO ISSUEPREVArticleCharacterization of heterogeneous polymer blends by two-dimensional proton spin diffusion spectroscopyP. Caravatti, P. Neuenschwander, and R. ErnstCite this: Macromolecules 1985, 18, 1, 119–122Publication Date (Print):January 1985Publication History Published online1 May 2002Published inissue 1 January 1985https://pubs.acs.org/doi/10.1021/ma00143a020https://doi.org/10.1021/ma00143a020research-articleACS PublicationsRequest reuse permissionsArticle...
Abstract While electrospinning provides an excellent preparation method for the manufacturing of polymer fibers with defined diameter, controlling overall porosity resulting fiber assemblies has remained elusive, particularly at higher porosities. In this study, use a low‐temperature collection device in air controlled humidity allowed simultaneous deposition and ice particles from condensing humidity. The were intimately embedded within served as pore template thus defining mesh after...
To evaluate the biocompatibility of a newly developed degradable class polyesterurethanes and their possible use as biomaterials, we investigated cell tissue interactions with these polymers using small number chemical base entities. The were prepared by chain extension diisocyanates PHB/HV-diol either PCL-diol or Diorez, another aliphatic polyester-diol. Regardless composition four tested used substrates, no morphological difference was observed in macrophages (macrophage line J774)...
Degrapol® and PLGA electrospun fiber fleeces were characterized with regard to diameter, alignment, mechanical properties as well scaffold porosity. The study showed that electrospinning parameters affect diameter alignment in an inverse relation: was increased flow rate, decrease working distance collector velocity, whereas the velocity but decreased rate. When or PLGA-polymers co-spun increasing ratios of a water-soluble polymer subsequently removed; fibrous scaffolds porosities obtained....
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCharcterization of polymer blends by selective proton spin-diffusion NMR measurementsP. Caravatti, P. Neuenschwander, and R. ErnstCite this: Macromolecules 1986, 19, 7, 1889–1895Publication Date (Print):July 1, 1986Publication History Published online1 May 2002Published inissue 1 July 1986https://pubs.acs.org/doi/10.1021/ma00161a018https://doi.org/10.1021/ma00161a018research-articleACS PublicationsRequest reuse permissionsArticle...
Abstract We describe the preparation of telechelic OH‐terminated poly[( R )‐3‐hydroxybutyric acid] (PHB) and poly{[( acid]‐ co ‐[( )‐3‐hydroxyvaleric acid]} (PHB/HV), on a semi‐preparative scale, by transesterification procedure from high‐molecular weight polymers. The oligomers have well‐defined reactive end groups are well suited for high‐molecular‐weight block copolymers chain extension.
The macrophage cell line J774, primary rat osteoblasts, and the osteoblast MC3T3-E1 were used to examine biocompatibility of a newly developed polyesterurethane foam possible use this structure as bone-repair materials. developed, biodegradable, highly porous (pore size 100–150 μm) DegraPol/btc® was found exhibit good compatibility; cell-to-substrate interactions induced neither cytotoxic effects nor activation macrophages. Osteoblasts macrophages exhibited normal morphology. No signs damage...
Since its accidental introduction into Africa, the cassava mealybug (CM) has spread to about 25 countries. The specific parasitoid Epidinocarsis lopezi , introduced from South America, area of origin, Nigeria in 1981, since been released more than 50 sites. By end 1986 it was established 16 countries and 750 000 km 2 . In southwestern Nigeria, CM populations declined after two initial releases, have remained low. During same period, indigenous predators mainly coccinellids, declined, as...
Skeletal myogenesis is a complex process, which known to be intimately depending on an optimal outside-in substrate-cell signaling. Current attempts reproduce skeletal muscle tissue in vitro using traditional scaffolds mainly suffer from poor directionality of the myofibers, resulting ineffective vectorial power generation. In this study, we aimed at investigating novel biodegradable microfibrous made DegraPol, block polyesterurethane previously demonstrated suitable for application....
Alfalfa fields in two climatically different regions were sampled for aphids and their natural enemies throughout 3 years (1957-1959). The under an integrated control program therefore received minimum amounts of insecticides. four imported parasites the spotted alfalfa aphid pea not yet important study area, so predators mainly responsible high degree naturally occurring biological control. By pooling data entire regions, it was possible to follow changes populations these mobile more...
Pest populations of the cassava mealybug Phenacoccus manihoti Mat.-Ferr.(Homoptera: Pseudococcidae) were reduced successfully by biological control agent Apoanagyrus (Epidinocarsis) lopezi De Santis (Hymenoptera: Encyrtidae) throughout most sub-Saharan Africa.The economics project evaluated based on data from field trials, socio-economic surveys, published results, and financial information provided International Institute Tropical Agriculture (IITA) national programmes.Costs benefits for P....
Abstract Pest populations of the cassava mealybug Phenacoccus manihoti Mat.‐Ferr. (Homoptera; Pseudococcidae) were reduced successfully by biological control agent Apoanagyrus (Epidinocarsis) lopezi De Santis (Hymenoptera: Encyrtidae) throughout most sub‐Saharan Africa. The economics project evaluated based on data from field trials, socio‐economic surveys, published results, and financial information provided International Institute Tropical Agriculture (IITA) national programmes. Costs...
A class of degradable, phase-segregated multiblock copolymers is presented. The new copoly(ester-urethane)s, termed DegraPolTM/btgc, consist crystallizable poly[(3-R-hydroxybutyrate)-co-(3-R-hydroxyvalerate)]-segments and amorphous segments from ε-caprolactone, diglycolide ethylene glycol. As junction unit an aliphatic diisocyanate, TMDI, applied. copoly(ester-urethane)s are thermoplastic elastomers (Tm = 120–136°C) processable without degradation. For medical applications, materials needed...
The industrially used flame synthesis of silica polymer fillers was extended to amorphous tricalcium phosphate (a-TCP) nanoparticles and resulted in a similar morphology as the traditionally fillers. Doping poly(lactide-co-glycolide) (PLGA) with such highly agglomerated a-TCP investigated for mechanical properties, increased vitro biodegradation formation hydroxyapatite layer on surface nanocomposite. PLGA films particle loadings ranging from 0 30 wt% were prepared by solvent casting....