1,657 research outputs found
エイコサペンタエン酸と遊離脂肪酸誘導体生産のための油糧糸状菌の生化学的解析と遺伝子工学
京都大学新制・課程博士博士(農学)甲第23253号農博第2460号新制||農||1085(附属図書館)学位論文||R3||N5343京都大学大学院農学研究科応用生命科学専攻(主査)教授 小川 順, 教授 阪井 康能, 教授 栗原 達夫学位規則第4条第1項該当Doctor of Agricultural ScienceKyoto UniversityDFA
Maximum Overlap Molecular Orbitals in Square Pyramidal (CH)5+ Cation
Applying the maximum overlap criterion, the localized molecular
orbitals of square pyramidal (CH)/ cation have been determined.
The resulting multi-center bonding orbitals are examined
in detail. In addition, the basal C-C and all C-H bonds are compared
with those of the more familiar systems, e. g., cyclobutane
and cyclobutene
Note: A versatile mass spectrometer chamber for molecular beam and temperature programmed desorption experiments
A dual purpose mass spectrometer chamber capable of performing molecular beam scattering (MBS) and temperature programmed desorption (TPD) is detailed. Two simple features of this design allow it to perform these techniques. First, the diameter of entrance aperture to the mass spectrometer can be varied to maximize signal for TPD or to maximize angular resolution for MBS. Second, the mass spectrometer chamber can be radially translated so that it can be positioned close to the sample to maximize signal or far from the sample to maximize angular resolution. The performance of this system is described and compares well with systems designed for only one of these techniques
Maximum Overlap. Hybridization in PF5 and SF4
The method of Murrell as modified by Golebiewski has been
applied to determine the maximum overlap hybrid orbitals for PF5
and SF4• For the former system, three cases have been considered:
cr overlap integrals of the central atom valence and F 2p orbitals are
(i) taken as angular parts of P atomic orbitals projected in the bond
directions, (ii) evaluated using SCF atomic wave functions with
equidistant F ligands, and (iii) calculated using experimental bond
lengths. The resultant overall hybridizations are compared and
discussed. For SF4, only case (iii) has been carried out. In addition,
the wave function of the lone pair orbital is obtained with symmetry
consideration and orthonormality relationships among all the hy-
. brids. This appears to be an inexpensive way to determine the
form of the lone pair and to estimate its size
Creation and control of a two-dimensional electron liquid at the bare SrTiO3 surface
Many-body interactions in transition-metal oxides give rise to a wide range
of functional properties, such as high-temperature superconductivity, colossal
magnetoresistance, or multiferroicity. The seminal recent discovery of a
two-dimensional electron gas (2DEG) at the interface of the insulating oxides
LaAlO3 and SrTiO3 represents an important milestone towards exploiting such
properties in all-oxide devices. This conducting interface shows a number of
appealing properties, including a high electron mobility, superconductivity,
and large magnetoresistance and can be patterned on the few-nanometer length
scale. However, the microscopic origin of the interface 2DEG is poorly
understood. Here, we show that a similar 2DEG, with an electron density as
large as 8x10^13 cm^-2, can be formed at the bare SrTiO3 surface. Furthermore,
we find that the 2DEG density can be controlled through exposure of the surface
to intense ultraviolet (UV) light. Subsequent angle-resolved photoemission
spectroscopy (ARPES) measurements reveal an unusual coexistence of a light
quasiparticle mass and signatures of strong many-body interactions.Comment: 14 pages, 4 figures, supplementary information (see other files
Afectación de la propiedad privada frente a la declaración de patrimonio histórico en el sistema juridico colombiano
DerechoMaking this monograph grade , I ratify the importance of the concept of historical heritage
property . And we review the appointment , procedure and responsibility for it under the
meaning of the Act 163 of 1959 , created in his time in the rule of law and its amendment
before the promulgation of the Constitution of 1991 , which introduced the shift to the State
of law. We will make a critical analysis of the historical, that is just the tangible and
intangible assets accumulated over time , may be of artistic, historical , paleontological ,
archaeological or literature containing a representative value and specific.
The owners of these properties should receive benefits for the conservation of these
properties. But the reality shows that are being severely punished a legal duty not required
to bear.
Any action on the part of society and the state is facing and supported by legal rules. Which
contribute to the development and understanding of the nation , provided they are given
within the framework of absolute peace and harmony. Overall most authors of legal
philosophy , agree in stating that a state of law , proposed to strengthen and guarantee
services considered essential rights . To maintain the standard of living necessary to
participate as a member of society.
We couldn´t finish this book without touching the issue of social and economic obligation
of the State to legally declared historical heritages.Al realizar esta monografía de grado, ratifico la importancia del concepto sobre
patrimonio histórico de bienes inmuebles. Y se revisa la designación, procedimiento y
responsabilidad de la misma bajo el sentido de la Ley 163 de 1959, Creada en su momento
en el Estado de derecho y su modificación ante la expedición de la Constitución de 1991,
que introdujo el viraje hacia el Estado social de derecho. Realizaremos un análisis crítico
del patrimonio histórico, que no es más que los bienes materiales e inmateriales
acumulados en el tiempo, pueden ser de tipo artístico, histórico, paleontológico,
arqueológico o bibliográfico que contengan un valor representativo y específico.
Los dueños de dichos inmuebles deberían recibir beneficios por la conservación de estas
propiedades. Pero la realidad refleja que están siendo duramente castigados con un deber
jurídico que no tienen la obligación de soportar.
Toda acción de parte de la sociedad y del Estado, está sometida y sustentada por
normas jurídicas. Las cuales contribuyen para el desarrollo y conocimiento de la nación,
siempre y cuando se dé dentro del marco de absoluta paz y armonía. En términos generales
la mayoría de autores de la filosofía del derecho, concuerdan en afirmar en que un Estado
social de derecho, propone fortalecer servicios y garantizar derechos considerados
esenciales. Para mantener el nivel de vida necesario para participar como miembro de la
sociedad.
No se podría terminar la presente obra sin tocar el tema de la obligación social y
económica del Estado frente a los patrimonios históricos legalmente declarados
Quasiparticle dynamics and spin-orbital texture of the SrTiO3 two-dimensional electron gas
Two-dimensional electron gases (2DEGs) in SrTiO have become model systems
for engineering emergent behaviour in complex transition metal oxides.
Understanding the collective interactions that enable this, however, has thus
far proved elusive. Here we demonstrate that angle-resolved photoemission can
directly image the quasiparticle dynamics of the -electron subband ladder of
this complex-oxide 2DEG. Combined with realistic tight-binding supercell
calculations, we uncover how quantum confinement and inversion symmetry
breaking collectively tune the delicate interplay of charge, spin, orbital, and
lattice degrees of freedom in this system. We reveal how they lead to
pronounced orbital ordering, mediate an orbitally-enhanced Rashba splitting
with complex subband-dependent spin-orbital textures and markedly change the
character of electron-phonon coupling, co-operatively shaping the low-energy
electronic structure of the 2DEG. Our results allow for a unified understanding
of spectroscopic and transport measurements across different classes of
SrTiO-based 2DEGs, and yield new microscopic insights on their functional
properties.Comment: 10 pages including supplementary information, 4+4 figure
Conjugated Linoleic Acid Supplementation Does Not Reduce Visceral Adipose Tissue in Middle-Aged Men Engaged in a Resistance-Training Program
Conjugated linoleic acid (CLA) supplementation has shown convincing effects at reducing body fat in animals; yet human study results have been somewhat inconclusive. The purpose of this study is to determine whether four weeks of CLA supplementation, the approximate length of a commercial package, can result in a positive change in visceral adipose tissue in resistance-trained middle-aged men. Thirty overweight and moderately obese, but otherwise healthy male subjects (aged 35 to 55 years) currently involved in resistance training, were randomly assigned into CLA and placebo groups in a double-blind, placebo controlled approach. The study lasted for 12 weeks and consisted of three four-week periods. During the first four weeks (run-in period) each subject received placebo (4 g safflower oil). Throughout the next four weeks (supplementation period), the placebo group continued receiving placebo, while the CLA group received 3.2 g/d of CLA. During the final four weeks (run-out period) all subjects received the placebo. Computed tomography (CT) scans were used to measure visceral adipose tissue (VAT) at weeks 4, 8 and 12. No significant reduction in VAT cross-sectional area was determined in the CLA group during the study. On the contrary, a significant reduction in cross-sectional area of VAT of 23.12 cm2 during the supplementation period was measured in the placebo group, which was abated during the run-out period. Our results suggest that CLA supplementation of 3.2 g/d for four weeks does not promote decreases in VAT in middle-aged men currently participating in a resistance-training program
- …