Results 61 to 70 of about 15,113 (249)
S‐Adenosylmethionine (SAM) hydrolases counter increased SAM epimerisation in thermophilic archaea
The FEBS Journal, EarlyView.S‐Adenosyl‐l‐methionine (SAM) is a vital enzyme cofactor. Epimerisation at the sulfonium centre of biologically active (SS,SCα)‐SAM is driven by heat, yielding biologically inactive (RS,SCα)‐SAM. Here, two novel archaeal SAM hydrolases from the thermophilic Sulfolobus acidocaldarius and the halophilic Haloferax volcanii are shown to cleave (RS,SCα)‐SAM.
Agnes Bartels +7 more
wiley +1 more source
Transonic wind-tunnel wall interference [PDF]
A method for analyzing wall interference is described which avoids the assumption of linear superposition of perturbations in extracting the wall induced velocity field.
Kemp, W. B., Jr.
core +1 more source
The FEBS Journal, EarlyView.Xylan, the second most abundant plant cell wall polysaccharide, is degraded by β‐xylanases and β‐xylosidases. Here, we present the 2.65 Å cryo‐EM structure of Enterobacter cloacae β‐xylosidase (EcXyl43, GH43) and the 2.4 Å X‐ray structure of its inactive F507A mutant.
Lorenzo Briganti +8 more
wiley +1 more source
Two-dimensional wind tunnel [PDF]
Information on the Japanese National Aerospace Laboratory two dimensional transonic wind tunnel, completed at the end of 1979 is presented. Its construction is discussed in detail, and the wind tunnel structure, operation, test results, and future plans ...
core +1 more source
Long‐term periodontal and peri‐implant tissue stability under supportive therapy
Periodontology 2000, EarlyView.Abstract Background Supportive periodontal and peri‐implant maintenance therapy is strongly associated with improved long‐term retention and stability of natural teeth and dental implants. Lack of regular professional follow‐up after initial therapy is a major risk factor for disease recurrence and tooth or implant loss.
Hom‐Lay Wang +5 more
wiley +1 more source
A numerical study of design and off-design operations of SHM1 airfoil
Frontiers in Aerospace EngineeringNatural laminar flow airfoils are essential technologies designed to reduce drag and significantly enhance aerodynamic performance. A notable example is the SHM1 airfoil, created to meet the requirements of the small-business jet by Honda R&D.
Aditi Sengupta, Abhijeet Guha
doaj +1 more source
The panel on propulsion aerodynamics [PDF]
Sources of discrepancies noted between propulsion aerodynamic characteristics as predicted from wind tunnel tests and as measured in flight are discussed.
Bowditch, D.
core +1 more source
Sedimentology, EarlyView.ABSTRACT The presence of microbial mats is often invoked to explain the good preservation of vertebrate tracks, because they can cover and biostabilize such structures. However, microbial influence on the sediment properties when the track is made and on the track characteristics has not been so thoroughly analysed.
Isabel Emma Quijada +4 more
wiley +1 more source
Experimental study of laminar separation phenomenon combining with numerical calculations
Vietnam Journal of Mechanics, 2011 The separation is much more sensitive for laminar flow than for turbulent flow. These remarks have been attested for both subsonic and supersonic flows.
Nguyen Manh Hung, Hoang Thi Bich Ngoc
doaj +1 more source
Wall interference assessment and corrections [PDF]
Wind tunnel wall interference assessment and correction (WIAC) concepts, applications, and typical results are discussed in terms of several nonlinear transonic codes and one panel method code developed for and being implemented at NASA-Langley ...
Garriz, J. A. +2 more
core +1 more source