Results 111 to 120 of about 44,118 (256)
The genetic population structure of riverine fishes is strongly shaped by the architecture of dendritic river networks, which can shift over both contemporary and geological timescales. Such river rearrangements are rarely incorporated into models of riverscape genetics, but they can have a profound effect on fish populations, especially when formerly ...
Thomas D. Morgan +8 more
wiley +1 more source
The authors document that wood restoration can rapidly and positively affect a number of geomorphic variables to improve habitat conditions for Pacific salmon. Abstract The loss of instream wood can create a legacy of channel incision that is detrimental to habitat formation.
Aaron Lee +6 more
wiley +1 more source
A helicopter handling-qualities study of the effects of engine response characteristics, height-control dynamics, and excess power on nap-of-the-Earth operations [PDF]
The helicopter configuration with an rpm-governed gas-turbine engine was examined. A wide range of engine response time, vehicle damping and sensitivity, and excess power levels was studied.
Corliss, L. D.
core +1 more source
Photographs before (left) and after (right) the May 2023 landslide in Mt Job, Mount Meager Volcanic Complex, British Columbia, Canada. The initial rock avalanche impacted the glacier, producing a 4.5‐km‐long debris flow that ran over it and down the valley.
Jaspreet Singh +2 more
wiley +1 more source
Fossil Hegemony and Capitalist Realism in Tropic of Orange
ABSTRACT This article examines Karen Tei Yamashita's Tropic of Orange (1997) through the lens of Mark Fisher's influential concept ‘capitalist realism’. Scholars of petrofiction have pointed to a political ambivalence in the representation of fossil fuels, where a better understanding of fossil capital can overwhelm as much as galvanize.
Claire Ravenscroft
wiley +1 more source
The market and the future of gas turbine engines for super heavy transport helicopters
The introductory part of the article provides brief information about the main activity of Element JSC – the development and production of electronic control systems for aircraft engines, in particular, the RDC-450M ECU family for turboshaft gas turbine ...
Vadym Nerubaskyi
doaj +1 more source
A practical approach to helicopter internal noise prediction [PDF]
A practical and well correlated procedure for predicting helicopter internal noise is presented. It accounts for the propagation of noise along multiple paths on an octave by octave basis.
Defelice, J. J., Levine, L. S.
core +1 more source
One‐step 3D printing combined with in‐situ self‐assembly of behenic acid creates hierarchical polypropylene surfaces with micro‐ and nanostructures. The resulting material exhibits superhydrophobicity with a contact angle of 163 (±2)°, self‐healing, and high scratch resistance, while reducing initial bacterial adhesion by 87%. ABSTRACT Superhydrophobic
Sebastian Schächtele +10 more
wiley +1 more source
Helicopter cabin noise: Methods of source and path identification and characterization [PDF]
Internal noise sources in a helicopter are considered. These include propulsion machinery, comprising engine and transmission, and turbulent boundary layer effects.
Murray, B. S., Wilby, J. F.
core +1 more source
Experimental implementation controlled SPWM inverter based harmony search algorithm [PDF]
An optimum PI controller using harmony search optimization algorithm (HS) is utilized in this research for the single-phase bipolar SPWM inverter. The aim of this algorithm is to avoid the conventional trial and error procedure which is usually applied ...
A. F. Yahaya, Jabbar +4 more
core

