نتایج جستجو برای: liquid segments
تعداد نتایج: 281605 فیلتر نتایج به سال:
use of line segments slip surface for optimized design of piles in stabilization of the earth slopes
stabilization of earth slopes with various proposed methods is one of the important concerns of geotechnical engineering. in this practice, despite numerous developments, design conservativeness and high costs of stabilization are the issues yet to be addressed. this paper not only deals with pile location optimization but also studies the effects of the pile length by using line segments slip ...
background: purple coneflower (echinacea purpurea l.) is one of the most important medicinal plants. hairy root culture of echinace, represent a valuable alternative to field cultivation for the production of bioactive secondary metabolites. objective: the present study investigates the effects of kno3, cacl2 and mgso4 concentrations on growth and the biosynthesis of cichoric acid in echinacea ...
This paper takes a new look at the traditionally established divide between sounds and prosodies, viewing it as a useful heuristics in language descriptions that focus on the segmental make- up of words. It pleads for a new approach that bridges this reified compartmentalization of speech in a more global communicative perspective. Data are presented from a German perception experiment in the f...
We have performed a combined experimental and theoretical study of the thermodynamic properties of semifluorinated alkanes. In particular, the liquid density of perfluorohexylhexane (F6H6) and perfluorohexyloctane (F6H8) has been measured as a function of temperature from 273.15 to 353.15 K and at four temperatures as a function of pressure up to 600 bar. The results were interpreted using the ...
A long-standing area of interest in phonological theory has been the analysis of processes that exhibit action at a distance. Consider for example a nasal harmony process in Tshiluba (Bantu; Johnson 1972:75–76, Odden 1994:301), where the applicative suffix (among others) normally contains an l (1a), which is realized instead as n when attached to a stem that contains a nasal (1b). In Tshiluba a...
In a recent paper Yamada et al. [1] propose the novel concept of ”pinched flow fractionation” (PFF) for the continuous size separation and analysis of particles in microfabricated lab-on-a-chip devices. In their description of the basic principle they claim that especially the width of the pinched and broadened segments will affect the separation performance. In the following we comment on the ...
Substrate functionalization is of great importance in successfully manipulating flows and liquid interfaces in microdevices. Herein, we propose an alternative approach for spatial patterning of wettability in a microcapillary tube. The method combines a photolithography process with self-assembled monolayer formation. The modified microcapillaries show very sharp boundaries between the alternat...
Respimat soft mist inhaler (SMI) is an producing a with low velocity. The liquid drug solution emitted by the mechanical energy of compressed spring, so device propellant-free. This paper describes measurement particle fraction penetrating through model upper respiratory tract (mouth cavity, pharynx, larynx trachea). inside cartridge was marked fluorescein in order to evaluate regional depositi...
Abstract The application of reprocessable and reprogrammable soft actuators is limited by the synthetic strategies, 3D‐shaping capabilities, small deformations. In this work, melt‐processable supramolecular based on segmented copolymers containing thiourethane liquid crystal segments have been prepared via sequential thiol addition reactions in a one‐pot approach using commercially available bu...
Thermo-acoustic combustion instability is a problem that has been researched for decades as it is a precursor to sudden catastrophic failure. Meanwhile, the demand for rocket engines that are able to maintain stable combustion over a wider range of thrust levels is increasing. One injector design utilized in Russia and Asia that has demonstrated stable throttling ability is the liquid-liquid co...
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