972 research outputs found
Agricultural transformations, livelihoods and rural-city connections Policy implications for regional development:[Project no. 290732: RurbanAfrica - African Rural-City Connections, 2012-2016. - SP1-Cooperation, FP7-SSH-2011-2, Deliverable No. 1.4]
ΠΠΎΠ½'ΡΠ½ΠΊΡΡΡΠ½ΠΈΠΉ Π°Π½Π°Π»ΡΠ· ΡΠΎΠ·Π²ΠΈΡΠΊΡ ΡΠΈΠ½ΠΊΡ ΡΠ΅ΠΊΡΠ΅Π°ΡΡΠΉΠ½ΠΈΡ ΠΏΠΎΡΠ»ΡΠ³ ΠΠ ΠΡΠΈΠΌ
ΠΠ΅ΡΠΎΡ Π΄ΠΎΡΠ»ΡΠ΄ΠΆΠ΅Π½Π½Ρ Ρ ΠΊΠΎΠ½βΡΠ½ΠΊΡΡΡΠ½ΠΈΠΉ Π°Π½Π°Π»ΡΠ· ΡΠΎΠ·Π²ΠΈΡΠΊΡ ΡΠΈΠ½ΠΊΡ ΡΠ΅ΠΊΡΠ΅Π°ΡΡΠΉΠ½ΠΈΡ
ΠΏΠΎΡΠ»ΡΠ³ ΠΠ ΠΡΠΈΠΌ ΡΠ° ΠΏΠΎΡΡΠ²Π½ΡΠ»ΡΠ½Π° ΠΎΡΡΠ½ΠΊΠ° ΡΡΠ½ΠΊΡΡΠΎΠ½ΡΠ²Π°Π½Π½Ρ ΠΊΠΎΠ½ΠΊΡΡΠ΅Π½ΡΠΎΡΠΏΡΠΎΠΌΠΎΠΆΠ½ΠΈΡ
ΡΠ΅ΠΊΡΠ΅Π°ΡΡΠΉΠ½ΠΈΡ
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Towards improved local governance through strengthened local government: evaluation of the LOGO South Programme 2007-2010
Surgical intervention for hydrocephalus in infancy; etiology, age and treatment data in a Dutch cohort
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A passive Stokes flow rectifier for Newtonian fluids
Non-linear effects of the Navier-Stokes equations disappear under the Stokes
regime of Newtonian fluid flows disallowing the fluid flow rectification. Here
we show mathematically and experimentally that passive flow rectification of
Newtonian fluids is obtainable under the Stokes regime of both compressible and
incompressible flows by introducing nonlinearity into the otherwise linear
Stokes equations. Asymmetric flow resistances arise in shallow nozzle/diffuser
microchannels with deformable ceiling, in which the fluid flow is governed by a
non-linear coupled fluid-solid mechanics equation. Fluid flow rectification has
been demonstrated for low-Reynolds-number flows (Re ~ O(0.001)-O(1)) of common
Newtonian fluids such as air, water, and alcohol. This mechanism can pave the
way for regulating the low-Reynolds-number fluid flows with potential
applications in precise low-flow-rate micropumps, drug delivery systems, etc
Actigraphic multi-night home-recorded sleep estimates reveal three types of sleep misperception in Insomnia Disorder and good sleepers
Actigraphic multi-night home-recorded sleep estimates reveal three types of sleep misperception in Insomnia Disorder and good sleepers
High Production of LukMF' in Staphylococcus aureus Field Strains Is Associated with Clinical Bovine Mastitis
Staphylococcus aureus, a major cause of bovine mastitis, produces a wide range of immune-evasion molecules. The bi-component leukocidin LukMF' is a potent killer of bovine neutrophils in vitro. Since the role of LukMF' in development of bovine mastitis has not been studied in natural infections, we aimed to clarify whether presence of the lukM-lukF' genes and production levels of LukMF' are associated with clinical severity of the disease. Staphylococcus aureus was isolated from mastitis milk samples (38 clinical and 17 subclinical cases) from 33 different farms. The lukM-lukF' genes were present in 96% of the isolates. Remarkably, 22% of the lukM-lukF'-positive S. aureus isolates displayed a 10-fold higher in vitro LukMF' production than the average of the lower-producing ones. These high producing isolates were cultured significantly more frequently from clinical than subclinical mastitis cases. Also, the detection of LukM protein in milk samples was significantly associated with clinical mastitis and high production in vitro. The high producing LukMF' strains all belonged to the same genetic lineage, spa-type t543. Analysis of their global toxin gene regulators revealed a point mutation in the Repressor of toxins (rot) gene which results in a non-functional start codon, preventing translation of rot. This mutation was only identified in high LukMF' producing isolates and not in low LukMF' producing isolates. Since rot suppresses the expression of various toxins including leukocidins, this mutation is a possible explanation for increased LukMF' production. Identification of high LukMF' producing strains is of clinical relevance and can potentially be used as a prognostic marker for severity of mastitis
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