Now showing items 21-30 of 37
Modified logarithmic law for velocity distribution subjected to upward seepage
A modified logarithmic law is derived to describe the velocity distribution in open-channel flow with an upward seepage. The derived function agrees well with the experimental measurements conducted in a laboratory flume. ...
Pickup probability for sediment entrainment
The study presents a theoretical derivation of a new pick-up probability formulation for sediment transport. Sand particles are assumed to be subjected to a hydraulically rough flow. The ...
Permeability of three-dimensional random fiber webs
We report the results of essentially ab initio simulations of creeping flow through large three-dimensional random fiber webs that closely resemble fibrous sheets such as paper and nonwoven fabrics. The computational scheme ...
Turbulent open-channel flow with upward seepage
Measurements of turbulent open-channel flow subjected to an upward bed seepage were performed in a laboratory flume using a two-dimensional Acoustic Doppler Velocimeter and a minipropeller. The experimental results show ...
Almost perfect sequences with θ=2
Almost perfect sequences with θ=2 are studied in this paper. Recently Arasu, Ma and Voss  studied such sequences and they could only obtain sequences having periods 8, 12 and 28. In this paper, we prove that no other ...
Theoretical studies on force titration of amino-group-terminated self-assembled monolayers
The structures of (3-aminopropyl)triethoxysilane (APTES), 4-aminothiophenol (4-ATP) and 4-mercaptopyridine (4-MP) self-assembled monolayers (SAMs) are studied by quantum mechanics in order to explain the force ...
Charting multilingualism : language censuses and language surveys in Hong Kong
(Hong Kong University Press, 1998)
The chapter reviews census and language survey data to present a comprehensive, longitudinal survey of the complex pattern of multilingualism and language diversity in Hong Kong over the twentieth century.
The essential work of fracture and JR curves for the double cantilever beam specimen : an examination of elastoplastic crack propagation
The propagation of a crack in a double-cantilever beam (DCB) geometry where there is extensive remote plastic flow both preceding and accompanying fracture is analysed. Experiments show that there is an appreciable path ...
Force titration of amino group-terminated self-assembled monolayers using chemical force microscopy
Chemical force microscopy (CFM) was used to measure the adhesion force between an Au-coated Si3N4 tip functionalized with OH groups and a silicon substrate functionalized with NH2 groups. The curve of the adhesion force ...
Force titration of amino group-terminated self-assembled monolayers of 4-aminothiophenol on gold using chemical force microscopy
Chemical force microscopy (CFM) was used to measure the adhesion force between NH2-terminated probe tip and gold substrate modified with self-assembled monolayers (SAMs) of 4-aminothiophenol (4-ATP). The curve of adhesion ...