882 research outputs found
Dynamics Simulation of Remotely Operated Vehicle-Fiber Optic Micro Cable System
No full textLi Q, Xu H, Zhang Q, Wang X, Li ZG. Dynamics Simulation of Remotely Operated Vehicle-Fiber Optic Micro Cable System. Presented at the WCICA2008, Chongqing, China
The semiotics of printed instructions (graphic signa)
No full textThis thesis sets out to describe sign systems for communication
using Axiomatic Functionalism as its theoretical framework.
In doing so, the thesis also provides an important
test to the claim of Axiomatic Functionalism that by using
its premisses the semiotician (or linguist) has all the
necessary "tools" s/he needs for the analysis and description
(the one implies the other) of any semiotic system for
communication (including Language).
Using Axiomatic Functionalism the author attempts to
describe a number of graphic semiotic systems for communication.
He finds that for an adequate description of the
signa (a generic term which includes various types of signs
and symbols) in these systems further theoretical notions
and definitions are needed. Discussing these the author
concludes that for Axiomatic Functionalism to maintain its
claim of universal applicability to any sign system for communication
it needs to incorporate in its premisses the
notions and definitions proposed here.
The thesis begins by a brief general introduction to
semiotics. This is followed by a discussion of what constitutes
scientific theories in relation to semiotics (including
linguistics). The relevant aspects of Axiomatic
Functionalism are then discussed, after which certain
original theoretical notions are introduced. These include:
“mnemonic economy" (with its many manifestations including
"mnemonic/pictorial motivation"), the "general organising
principle" ("systemic principle"), "principle of coinage" (a
mechanism for generating signa), and "signum-family”.
Having established the necessary theoretical background, the
author proceeds to describe various graphic “signum-systems"
discussing their important features and establishing the
types of signum they consist of and, consequently, the types
of system they are, their complexity and the "plerology”
(grammar) of each system, where present. The systems discussed
include various systems used in books on plants; a
system used in a book on "lace knitting"; a system used in
working models; a system used in providing information about
paintings in the "Classics of World Art" series of books;
and a system used in the "Automobile Association" handbooks.
Further Axiomatic Functionalist theoretical notions,
directly relevant to the systems described thereafter, are
then introduced. This is followed by a description of three
systems: two computer "languages", the "Hexadecimal notation"
and the "binary code", and the "Library of Congress
classification system". A final brief "Epilogue" concludes
the thesis
Bioactivity-guided Isolation of Antiosteoporotic Compounds from Ligustrum lucidum
No full textThe fruits of Ligustrum lucidum (FLL) has long been used for the treatment of osteoporosis in China, but the antiosteoporotic compounds in FLL are still poorly understood. In this study, the alkaline phosphatase (ALP) activity-guided isolation of osteogenic components from FLL was carried out by using osteoblast-like UMR-106 cells. Eight compounds, namely tyrosol (1), tyrosyl acetate (2), hydroxytyrosol (3), salidroside (4), oleoside dimethyl ester (5), oleoside-7-ethyl-11-methyl ester (6), nuzhenide (7), and G13 (8), were isolated and identified. Further study showed that compounds 3, 4, 7, and 8 increased ALP activity in UMR-106 cells. Compounds 5, 6, and 7 promoted the proliferation of UMR-106 cells. The aqueous extract of FLL-activated ER/-mediated gene transcription, whereas the isolated compounds were inactive. All eight isolated compounds also exhibited antioxidative activity, with compounds 1, 2, and 3 being the most potent. These results indicate that the antiosteoporotic effect of FLL is derived from different compounds together with different mechanisms such as ER-dependent or independent pathways and antioxidative effects. Salidroside (4) and nuzhenide (7) warrant further investigation as new pharmaceutical tools for the prevention and treatment of osteoporosis
Identification and Pathogenicity Analysis of Huaxiibacter chinensis Qf-1 in Mink (Neogale vison)
No full textMink (Neogale vison) is a commercially farmed animal of global importance. However, disease outbreaks during farming not only cause significant economic losses but also substantially increase the risk of zoonotic infections. The identification and characterization of pathogenic bacteria remain a major bottleneck restricting the development of healthy and sustainable mink farming. In this study, an LB medium was used to isolate a pale-white, rod-shaped, Gram-negative bacterial strain, Qf-1, from minks with pneumonia. Based on morphological characteristics, biochemical properties, 16S rRNA gene sequencing, and average nucleotide identity (ANI) analysis, strain Qf-1 was identified as Huaxiibacter chinensis Qf-1. Under laboratory conditions, H. chinensis Qf-1 induced typical pneumonia symptoms in Kunming mice. Furthermore, whole-genome sequencing of H. chinensis Qf-1 revealed its genome to be 4.77 Mb and to contain a single chromosome and one plasmid. The main virulence genes of H. chinensis Qf-1 were primarily associated with flgB, flgC, flgG, aceA, hemL, tssC1, csgD, hofB, ppdD, hcpA, and vgrGA, functioning in motility, biofilm formation, colonization ability, and secretion systems. Our findings contribute to a better understanding of their pathogenic mechanisms, thereby laying a theoretical foundation for further investigation into the complex interactions between gut microbiota and the host
Kinetics fitting of Qf and Qb for apo and bound states for NCBD and TAD.
No full text<p>Kinetics fitting of Qf and Qb for apo and bound states for NCBD and TAD.</p
Hierarchical MnCo2O4 nanosheet arrays/carbon cloths as integrated anodes for lithium-ion batteries with improved performance
No full textThe effect of somatostatin treated SH-SY5Y cells on the digestion ability of the peptide substrate qf-Aβ(1–7)C or qf-Aβ(12–16)AAC present in the culture medium.
No full textThe effect of somatostatin treated SH-SY5Y cells on the digestion ability of the peptide substrate qf-Aβ(1–7)C or qf-Aβ(12–16)AAC present in the culture medium.</p
Phase Transition and Oxygen Ion Diffusion in (La_(1-x)Ln_x)_2Mo_2O_9 (Ln=Nd, Gd, x=0.05-0.25) Using Dielectric Relaxation Method
No full textDielectric relaxation method was employed to study the properties of oxygen ion diffusion and phase transition in the oxide-ion conductors (La_(1-x)Ln_x)_2Mo_2O_9 (Ln = Nd, Gd, x = 0.05-0.25). Two dielectric loss peaks were observed: peak Pd at about 600 K and peak Ph around 720 K. Peak Pd is a relaxational peak and associated with the short-range diffusion of oxygen ions, while peak Ph hardly changes its position and dramatically decreases in height with increasing frequency, exhibiting non-relaxational nature. With increasing Ln~(3+) concentration, the heights of peak Ph and Pd increase at first and then decrease after passing a maximum at 15% doping. It is suggested that peak Ph is related to the phase transition of a static disordered state to a dynamic disordered state in oxygen ions/vacancies distribution. It is found that the 15%Gd or 15%Nd doped La_2Mo_2O_9 samples exhibit the highest conductivity in accordance with the highest height of peak Pd at this doping content
Cathodoluminescence of Yellow and Blue Luminescence in Undoped Semi-insulating GaN and n-GaN
No full text- …
