Materials Literature
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A series of polyurethane (PU)/potassium tita- nate whiskers (PTW) composites modified by a high molecular weight hydroxyl-terminated polydimethylsilox- ane (HTPDMS) were prepared. The PTW is modified by 2,4-diisocyanatotoluene (2,4-TDI). The effect of the PTW content on the mechanical and tribological properties of th…
We study suspensions of colloidal spheres with a constant zeta-potential within Poisson–Boltzmann theory, quantifying the discharging of the spheres with increasing colloid density and decreasing salt concentration. We use the calculated renormalized charge of the colloids to determine their pairwise effective screene…
Biomass utilization through direct- or co-combustion with coal, based on coal, hydrogen and oxygen compounds chemical energy conversion into heat in boilers, is simultaneously the cheapest and - according to experts - economically least effective solution. In case of heat and electricity production in cogeneration pro…
In order to investigate the progressive failure process of brittle rock,the mechanical properties of red sandstone from south area of Shandong province are studied by the RMT-150C rock mechanical experimental system.The stress-strain curves of samples under different strain rates are recorded.The deformation and progr…
Applications and development of Carbon Fiber Composites(CFRPs) are overviewed in this paper.Firstly,the classification and mechanical properties of carbon fibers are described,and the characteristics of CFRPs are discussed.Then,the applications of CFRPs to cosmonautic fields at home and abroad are introduced,especiall…
Durability is one of the challenges for the commercialization of fuel cell vehicles. The mechanisms and solutions for fuel cell degradation are elucidated from the material and system point of view. In the aspect of fuel cell system, typical operating processes are analyzed, such as driving cycles, start-stop, low loa…
Carbon molecular sieve (CMS) membranes have been studied for more than 20 years as promising and energy-efficient membranes for gas separation. Due to their high permeability and selectivity, as well as their high thermal and chemical stability under adverse and harsh conditions, CMS membranes are becoming increasingl…
During the past few years, tissue-engineered skin constructs has offered great promise in the treatment of deep burns and various skin-related disorders. The overall impact of bioengineered skin research, as a multidisciplinary field, has also enhanced our understanding of the structure-function relations and the phys…
We propose a deterministic solver for the time-dependent multi-subband Boltzmann transport equation (MSBTE) for the two dimensional (2D) electron gas in double gate metal oxide semiconductor field effect transistors (MOSFETs) with flared out source/drain contacts. A realistic model with six-valleys of the conduction b…
社会資本の維持管理や温室効果ガス排出抑制が課題となる中，地盤改良技術についても，既設構造物の補修や補強に適用可能で，温室効果ガスの排出が少ない技術が求められる。微生物代謝で発生する二酸化炭素と土の間隙中のカルシウム源から炭酸カルシウムを析出させて土を固化する炭酸カルシウム法は，既設構造物直下の地盤に適用しやすく，改良材製造時の二酸化炭素排出が少ない技術として期待される。本研究では，炭酸カルシウム法により豊浦砂を固化し，三軸圧縮試験および動的遠心模型実験を行った。三軸圧縮試験では，固化した供試体の強度向上が確認された。動的遠心模型実験では，加振中の模型地盤の間隙水圧，応答加速度の変化や，残留変形などから，液状化対策としての有効性が確…
The JET ITER-like wall project (ILW) replaces the first wall carbon fibre composite tiles with beryllium and tungsten tiles which should have improved fuel retention characteristics but are less thermally robust. An enhanced protection system using new control and diagnostic systems has been designed which can modify…
The initial stage of the defect formation in the C20 and C36 fullerenes has been investigated by the ab initio method and in terms of tight-binding models. A comparison with the Stone-Wales transformation in the C60 fullerene has revealed the presence of two independent stages in this process, the first of which is an…
A basic process to fabricate Ru/rutile-Co-doped TiO 2 /Ru capacitors for 20 nm-technology generation of DRAMs and beyond was developed. The aim of this study is that the basic process provides foresights into EOT and leakage-current density requirements. We chose rutile-TiO 2 for the insulators to meet the requirement…
A novel, catalyst-free strategy for the direct synthesis of vertically aligned silicon nanowire-carbon nanotube (SiNW-CNT) heterojunction arrays is presented. Such a heterojunction with the junction area in the nanoscale displays enhanced field emission characteristics at low turn-on field, with a nearly three times i…
We report on the phase behavior and self-assembly phenomena of (polystyrene)n(poly(2-vinylpyridine)-b-poly(acrylic acid))n, PSn(P2VP-b-PAA)n, heteroarm star block terpolymers, in DMF/water solvent mixture. The stars were prepared using a one-pot, four-step anionic polymerization method following the “in–out” approach.…
Chemically identical tetrapyrrole cofactors such as hemes and chlorophylls participate in functionally diverse biological roles. An analysis of the available protein structural data for the bacteriochlorophylls in the photosynthetic reaction center gives statistically reliable evidence of the hypothesis that the prote…
This paper reports the synthesis and characterization of a novel series of chain-like compounds where oxo-centered triruthenium cluster moieties are bridged by 4,4'-bipyridine (4,4'-bpy) spacers. A reaction of solvent-coordinated triruthenium "monomer" precursor [Ru(3)O(CH(3)CO(2))(6)(CO)(CH(3)OH)(2)] with a 0.1 equim…
A novel metallization of non-conductive epoxy substrate with Cu-Sn "speculum alloy," or "white bronze," was performed through successive electrochemical processes: ( i ) conventional electroless deposition of pure Cu layer and ( ii ) subsequent electrochemical alloying of the resulting pure Cu layer with Sn using an i…
A three-dimensional network PAMAM-Au nanocomposite (3D-PAMAM-Au NC) was prepared by using the first generation polyamidoamine dendrimer (G1 PAMAM) as the dispersant agent. The resultant 3D-PAMAM-Au NC was successfully used as an immobilization matrix for the construction of a reagentless mediator-free horseradish pero…
A series of metallo-macrocyclic based coordination polymers has been prepared from flexible amide ligands N-6-[(3-pyridylmethylamino)carbonyl]-pyridine-2-carboxylic acid (L1-CH(3)) and N-6-[(4-pyridylmethylamino)carbonyl]-pyridine-2-carboxylic acid (L2-CH(3)). In all but one case, self-assembled dinuclear metallo-macr…