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Effect of Eucalyptus Oil Added Surfactants on the Rheology of Mucus Gel Simulants
Eucalyptus oil is a commonly used remedy for common colds. For a substance to be effective therapy in obstructive airway diseases, it must reduce the viscosity of respiratory mucus. The present study evaluates the effectiveness of eucalytpus oil added phospholipid mixtures as possible substitute therapies in diseases…
A New Method of Evaluating Spherical Fabric Deformation
In this paper, I present a study of the spherical elongation of fabrics under cyclic stresses on those parts of a garment that are most exposed to stress, the elbow and the knee. For this purpose, I have developed a new modified apparatus and a new method for testing the spherical deformation of fabric. In addition, I…
Magnetic Properties of Ordered and Disordered Spinel‐Phase Ferrimagnets
In spinel‐phase ferrimagnets, disorder in the cation distribution between octahedral and tetrahedral sites can influence such fundamental magnetic properties as saturation magnetization, exchange coupling, and ferrimagnetic ordering temperatures. Given the sensitivity of magnetic properties to structure, it has been s…
From cellulose to cell
The cell wall is often pictured as a more-or-less random feltwork of cellulose microfibrils in association with other polysaccharide and protein complexes. There is evidence from morphology, morphogenesis and mechanics that the structures in the cell wall are far more regular and that their interactions are driven by…
Magnetic impurity effects in metallic carbon nanotubes: local non-Fermi liquid theory
Magnetic impurity effects on metallic carbon nanotubes are studied theoretically. The resolvent method for the multi channel Kondo effect is applied to the band structure of the kp perturbation hamiltonian in the limit of the infinite onsite repulsion at the impurity site. We discuss the local non-Fermi liquid behavio…
Photoluminescence study of V-groove quantum wires: The influence of disorder on the optical spectra and the carrier thermalization
We report on time-resolved and steady-state photoluminescence studies of GaAs/AlGaAs V-groove quantum wire structures. Steady-state photoluminescence experiments are performed in the temperature range from 8K to 200K. We evaluate the relation between photoluminescence excitation and absorption and determine experiment…
Phase transition properties of a finite ferroelectric superlattice from the transverse Ising model
We consider a finite ferroelectric superlattice in which the elementary unit cell is made up of l atomic layers of type A and n atomic layers of type B. Based on the transverse Ising model we examine the phase transition properties of the ferroelectric superlattice. Using the transfer matrix method we derive the equat…
Effects of Nb and Zr Alloying Additions on the Activation Behavior of Ti in Hydrochloric Acid
The activation behaviors of air‐passivated commercially pure Ti, Ti‐50 wt % Zr, and Ti‐45 wt % Nb were investigated in hydrochloric acid (HCl) ranging from 0.1 to 10 M, and temperatures ranging from 13 to 52°C. In situ electrochemical impedance spectroscopy and X‐ray adsorption studies in 5 M HCl confirmed: ( i ) oxid…
Acid hydrolysis of bacterial cellulose reveals different modes of synergistic action between cellobiohydrolase I and endoglucanase I
Intact and partially acid hydrolyzed cellulose from Acetobacter xylinum were used as model substrates for cellulose hydrolysis by 1,4-beta-D-glucan-cellobiohydrolase I (CBH I) and 1,4-beta-D-endoglucanase I (EG I) from Trichoderma reesei. A high synergy between CBH I and EG I in simultaneous action was observed with i…
Determination of the Structure of Polyelectrolyte Brushes
We have prepared polyelectrolyte brushes on silicon blocks in two steps: first, we graft polystyrene (PS) chains terminated by a trichlorosilane group, and then, we convert the grafted PS to poly(styrenesulfonate, sodium salt) by using a soft sulfonation reaction. The grafted layers are fully characterized by ellipsom…
Electrical and environmental aging of silicone rubber used in outdoor insulation
This is a laboratory study on the aging of SIR and hydrophobicity recovery. UV radiation, corona discharges, acid rain, dry-band arcing are employed as sources of the aging. Chemical and morphological analysis is used to detect the surface chemical and structural changes derived from these stresses. The nature of high…
Life cycle studies on hemp fibre reinforced components and ABS for automotive parts
With the increasing importance of environmental interactions, several innovations of the environmental performance are introduced in automotive industry. One aspect of innovation is an environmental material selection including renewable raw materials. Products of renewable raw materials are generally regarded as envi…
Development of composite insulators in China
The development of composite insulators in China dates back to the early 1970's. In the 1990's they have become widely used in China. At present, up to 600000 composite insulators are operating on 35 to 500 kV ac overhead transmission lines. They are to be introduced into the 500 KV HVDC transmission schemes. In China…
Variational approach for the Holstein molecular-crystal model
A variational technique is developed to investigate the polaronic features of the Holstein molecular-crystal model. It is based on a linear superposition of Bloch states that describe large and small polaron wave functions. It is shown that this method provides a very good description of the regime characterized by in…
Eutectic colony formation: A stability analysis
Experiments have widely shown that a steady-state lamellar eutectic solidification front is destabilized on a scale much larger than the lamellar spacing by the rejection of a dilute ternary impurity and forms two-phase cells commonly referred to as "eutectic colonies." We extend the stability analysis of Datye and La…
Derivatized Mesoporous Silicon with Dramatically Improved Stability in Simulated Human Blood Plasma
The stability of derivatized mesoporous silicon in a physiological environment is investigated and potential applications are discussed. It is shown that, while the surface of hydride-terminated mesoporous silicon corrodes very rapidly upon exposure to simulated body fluid (see Figure), the dodecenyl-terminated materi…
Coordination Compounds of Monoborane−Lewis Base Adducts: Syntheses and Structures of [M(CO)5(η1-BH3·L)] (M = Cr, Mo, W; L = NMe3, PMe3, PPh3)
Photolysis of [M(CO) 6 ] (M = Cr, W) in the presence of BH 3 ·L (L = NMe 3, PMe 3, PPh 3 ) gave isolable borane complexes [M(CO) 5 (η 1 -BH 3 ·L)] ( 1a, M = Cr, L = PMe 3; 1b, M = Cr, L = PPh 3; 1c, M = Cr, L = NMe 3; 2a, M = W, L = PMe 3; 2b, M = W, L = PPh 3; 2c, M = W, L = NMe 3 ). In products 1 and 2, the monobora…
Computer simulation of random packing of unequal particles
A Monte Carlo simulation model for the random packing of unequal spherical particles is presented in this paper. With this model, the particle radii obeying a given distribution are generated and randomly placed within a cubic packing domain with high packing density and many overlaps. Then a relaxation iteration is a…
Control of Y 2 O 3:Eu Spherical Particle Phosphor Size, Assembly Properties, and Performance for FED and HDTV
Control of Y 2 O 3:Eu Spherical Particle Phosphor Size, Assembly Properties, and Performance for FED and HDTV, Jing, X., Ireland, T., Gibbons, C., Barber, D. J., Silver, J., Vecht, A., Fern, G., Trowga, P., Morton, D. C.