1,074 research outputs found
Circulation design of museums: linking chinese classical garden art with museum space
Museum architecture has always been recieving considerable attention from
art and architecture commnunities due to its exclusive culture, history, and
artistry. The circulation design discussed in this paper and is an exploration
of architectural design methodology, based on the author's criticism of
contemporary museum architecture's spatial order chaos, illogical spatial
organization, and excessive attention on form.
This paper intends to intergate circulation, space togather with Classical Chinese
Garden art under the same stopic. The relevant theories of art, philosophy,
aesthetics, and psychology are applied as well, with a large number of design
cases from various countries being cited in hope to summarize the designoriented architectural design theory.
Space is both the main body of the architecture,and the carrier for people to live
in while nourishing the people. Therefore, the architectural space should not be
talked alone without caring the nature. In conclusion, this paper aims to provide
a new mindset for future museum design, hoping to achieve rational design
arrangement, considering the relationship between space, circulation and people
Electronic and Structural Properties of C Molecule
The extended SSH model and Bogoliubov-de Gennes(BdeG) formalism are applied
to investigate the electronic properties and stable lattice configurations of
C. We focus the problem on the molecule's unusual symmetry. The
electronic part of the Hamiltonian without Coulomb interaction is solved
analytically. We find that the gap between HOMO and LUMO is small due to the
long distance hopping between the 2nd and 5th layers. The charge densities of
HOMO and LUMO are mainly distributed in the two layers, that causes a large
splitting between the spin triplet and singlet excitons. The differences of
bond lengths, angles and charge densities among the molecule and polarons are
discussed.Comment: 15 pages, 4 figures, 4 Table
Alloying effect on the ideal tensile strength of ferromagnetic and paramagnetic bcc iron
Using \emph{ab initio} alloy theory formulated within the exact muffin-tin
orbitals theory in combination with the coherent potential approximation, we
investigate the ideal tensile strength (ITS) in the direction of bcc
ferro-/ferrimagnetic (FFM) and paramagnetic (PM) Fe ( Al, V,
Cr, Mn, Co, or Ni) random alloys. The ITS of ferromagnetic (FM) Fe is
calculated to be \,GPa, in agreement with available data, while the PM
phase turns out to posses a significantly lower value of GPa. Alloyed to
the FM matrix, we predict that V, Cr, and Co increase the ITS of Fe, while Al
and Ni decrease it. Manganese yields a weak non-monotonic alloying behavior. In
comparison to FM Fe, the alloying effect of Al and Co to PM Fe is reversed and
the relative magnitude of the ITS can be altered more strongly for any of the
solutes. All considered binaries are intrinsically brittle and fail by cleavage
of the planes under uniaxial tensile loading in both magnetic phases.
We show that the previously established ITS model based on structural energy
differences proves successful in the PM Fe-alloys but is of limited use in the
case of the FFM Fe-based alloys. The different performance is attributed to the
specific interplay between magnetism and volume change in response to uniaxial
tension. We establish a strong correlation between the compositional effect on
the ITS and the one on the shear elastic constant for the PM alloys and
briefly discuss the relation between hardenability and the ITS.Comment: 6 figure
Meandering river sandstone architecture characterization based on seisimic sedimentology in Kumkol South oilfields [RETRACTED ARTICLE]
1460-1471To improve the finely architecture characterization of meandering river sand body in wide well space oilfield, this study identified the meandering river sand body of Layer MI-1 of Kumkol South Oilfield in South Turgai Basin. Under the guidance of the sedimentary pattern of meandering channel sand body, this study establishes the log-seismic reservoir characterization method by applying reservoir characterization,seismic sedimentology and seismic forward simulation with well logging and seismic data. The different levels of meandering river sand body which include the composite meandering belts, single meandering belt, single point bar and single point bar inner are finely studied in Layer MI-1 of Kumkol South Oilfield. Based on the researches mentioned above, the recognition method and criteria of composite channel are studied. Specifically, the cosine phase seismic attribute can be used to recognize the lateral boundaries of composite channel when the thickness of composite channels >8 m. And the frequency division data can be used to recognize the vertical boundaries of composite channels when the thickness of composite channels >9 m. The recognition methods of the abandon channel and the mud stone between channels are also studied. Specifically, the sweet, waveform classification and the three-instantaneous information can improve the recognition of single channel boundary. Six boundaries are recognized in layer MI-1. Finally, the recognition method and criteria of lateral accretionary layers are studied. In the sedimentary and seismic data conditions of study area, the synthetic seismic information can improve the recognition of the lateral accretionary layers when the thickness of point bar >12 m and the thickness of lateral accretionary layers >1. 5 m
Tensile strain-induced softening of iron at high temperature
In weakly ferromagnetic materials, already small changes in the atomic
configuration triggered by temperature or chemistry can alter the magnetic
interactions responsible for the non-random atomic-spin orientation. Different
magnetic states, in turn, can give rise to substantially different macroscopic
properties. A classical example is iron, which exhibits a great variety of
properties as one gradually removes the magnetic long-range order by raising
the temperature towards and beyond its Curie point of
\,K. Using first-principles theory, here we demonstrate
that uniaxial tensile strain can also destabilize the magnetic order in iron
and eventually lead to a ferromagnetic to paramagnetic transition at
temperatures far below . In consequence, the intrinsic
strength of the ideal single-crystal body-centered cubic iron dramatically
weakens above a critical temperature of \,K. The discovered
strain-induced magneto-mechanical softening provides a plausible atomic-level
mechanism behind the observed drop of the measured strength of Fe whiskers
around \,K. Alloying additions which have the capability to partially
restore the magnetic order in the strained Fe lattice, push the critical
temperature for the strength-softening scenario towards the magnetic transition
temperature of the undeformed lattice. This can result in a surprisingly large
alloying-driven strengthening effect at high temperature as illustrated here in
the case of Fe-Co alloy.Comment: 3 figure
Assessing the new product development process for the industrial decarbonization of sustainable economies
This study aims to find out the significant stages of new product development process for the industrial decarbonization of sustainable economies by using interval type-2 (IT2) fuzzy decision-making trial and evaluation laboratory (DEMATEL). The findings demonstrate that commercialization is the most significant process of new product generation process of industrial decarbonization. Moreover, it is also concluded that with respect to the sub-criteria, cost analysis, and performance evaluation have the highest weights. An effective cost analysis is required in the new product development process. The costs of the product development process can in some cases be much higher than anticipated. This situation eliminates the effectiveness of the newly developed product. In this context, companies need to make the necessary plans for the costs of these new products correctly. On the other hand, it is important to follow the costs in detail during the process. Otherwise, the product that does not provide a cost advantage will not be preferred by industrial companies. This will cause the actions to be taken to reduce carbon emissions to fail.Key Scientific Research Project of Colleges and Universities in Henan Province "Research on the key role of Investment in the Optimization and upgrading of Industrial structure in Henan Province"Soft Science Research Plan Project of Henan Provinc
Ubiquitous conservative interaction patterns between post-spliced introns and their mRNAs revealed by genome-wide interspecies comparison
Introns, as important vectors of biological functions, can influence many stages of mRNA metabolism. However, in recent research, post-spliced introns are rarely considered. In this study, the optimal matched regions between introns and their mRNAs in nine model organism genomes were investigated with improved Smith–Waterman local alignment software. Our results showed that the distributions of mRNA optimal matched frequencies were highly consistent or universal. There are optimal matched frequency peaks in the UTR regions, which are obvious, especially in the 3′-UTR. The matched frequencies are relatively low in the CDS regions of the mRNA. The distributions of the optimal matched frequencies around the functional sites are also remarkably changed. The centers of the GC content distributions for different sequences are different. The matched rate distributions are highly consistent and are located mainly between 60% and 80%. The most probable value of the optimal matched segments is about 20 bp for lower eukaryotes and 30 bp for higher eukaryotes. These results show that there are abundant functional units in the introns, and these functional units are correlated structurally with all kinds of sequences of mRNA. The interaction between the post-spliced introns and their corresponding mRNAs may play a key role in gene expression
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