Results 101 to 110 of about 7,266 (305)

Migraine ? a suitable case for treatment? [PDF]

open access: yesNeuropsychiatric Disease and Treatment, 2006
Headache disorders are common, with a lifetime prevalence of over 90% in all populations where they have been measured. So common, in fact, that a Global Campaign to Reduce the Burden of Headache was launched in 2004 to educate health care providers, the general public, and national governments to recognize that headache disorders are not trivial, that
openaire   +2 more sources

Microbiome−host proteostasis crosstalk—An emerging perspective on mechanisms and interventions toward healthy longevity

open access: yesFEBS Letters, EarlyView.
Proteostasis and the gut microbiota play a key role in shaping host physiology. Microbiota‐derived metabolites, vitamins, and RNA modulate host proteostasis. Findings from model systems, including C. elegans, indicate microbes can either stabilize or disrupt host proteostasis.
Abhishek Anil Dubey, Maria Ermolaeva
wiley   +1 more source

Some Experimental Studies on Airjet and Solid Body Vortex Generators [PDF]

open access: yes, 2002
generators (VGs) in an induction type wind tunnel. While the former comprised a convergent nozzle having an area ratio of 4, the later ones included vane and wedge type devices.
Shobhavathy, MT, Nagpurwala, QH
core  

Structural insights and therapeutic targets in Acinetobacter baumannii capsule biosynthesis

open access: yesFEBS Letters, EarlyView.
Hypervirulent KL49 A. baumannii's capsular polysaccharide contains the nonulosonic acid 8‐epi‐Leg5,7Ac2, synthesized by epimerization via ElaA, ElaB, and ElaC. Crystal structures of ElaA, ElaB, and ElaC reveal their role in CMP‐Leg5,7Ac2 synthesis and regioselective C8 epimerization.
Woo Cheol Lee   +7 more
wiley   +1 more source

Effect of casing treatment on performance of a two-stage high-pressure-ratio fan

open access: yes, 1979
A two-stage fan, previously tested with a solid casing, was tested with a casing with circumferential grooves over the tips of both rotors (casing treatment). Tests were conducted at 80 and 100 percent of design speed with uniform flow.
Urasek, D. C.
core  

A Novel Approach to Evaluate the Benefits of Casing Treatment in Axial Compressors

open access: yesInternational Journal of Rotating Machinery, 2012
Passive control devices based on casing treatments have already shown their capability to improve the flow stability in axial compressors. However, their optimization remains complex due to a partial understanding of the related physical mechanisms.
Guillaume Legras   +4 more
doaj   +1 more source

Three phosphatase families form a community: The phosphohydrolases that act upon inositol pyrophosphates

open access: yesFEBS Letters, EarlyView.
Inositol pyrophosphates are energy‐rich signaling molecules that perform critical functions in cells. Three different families of phosphatases hydrolyze the β phosphate of the inositol pyrophosphate molecules: two have narrow specificities and one is promiscuous.
Ronda J. Rolfes
wiley   +1 more source

Application of recess vaned casing treatment to axial flow compressors

open access: yes, 1987
In axial flow compressors and fans, the stable working range is restricted by the so called stall line where operation may become unstable and simultaneously a short fall in compressor performance appears.
Azimian, A. R.
core  

Impact of Impeller Casing Treatment on the Acoustics of a Small High Speed Centrifugal Compressor

open access: yes, 2018
Ported shroud casing treatment is widely used to delay the onset of surge and thereby enhancing the aerodynamic stability of a centrifugal compressor by recirculating the low momentum fluid in the blade passage. Performance losses associated with the use
Jorge García-Tíscar   +9 more
core   +1 more source

DIAGNOSTICS OF PRE-SURGE CONDITION OF THE AXIAL COMPRESSOR WITH THE ANNULAR GROOVES CASING TREATMENT

open access: yesАвіаційно-космічна техніка та технологія, 2018
Ensuring the gas-dynamic stability of gas turbine engine, still remains one of the actual problem of modern aircraft engine building. To date, a significant number of studies have been conducted.
Иван Иванович Редин   +1 more
doaj   +1 more source

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