molecular structure charge transport and photo response

... π-orbitals and π-bond Figure 1.2 Schematics of neutral polymer π-conjugated backbone and polaron structure Figure 1.3 Structure and one-electron energy level diagram of radical cations and ... several aspects of polymer physics and chargetransport physics in ordered polymer OSCs In this thesis, thermal excitation of the polymer and its effect on field-effect transport are studied In particular, ... provide good charge transport Therefore, the in-plane charge transport might be expected to be better When the πconjugated backbones become partially disordered, the delocalisation of charge carriers...

Ngày tải lên: 11/09/2015, 09:57

... dt ,N (1.3) where mi , γ i and qi are the mass, friction coefficient and charge of particle i, while FiR , Ei and FiS are the random stochastic force, electric field, and short range force, respectively, ... adsorption, charge, 14 Chapter Introduction hydrophobicity and chirality.1,5 Various factors such as eluent pH, type and concentration of organic and charged modifiers, ionic strength and temperature ... difference in adsorption, charge, hydrophobicity and chirality.1 Various factors such as eluent pH, type and concentration of organic and charged modifiers, ionic strength and temperature were identified...

Ngày tải lên: 14/09/2015, 08:24

... are: relaxed DNAH (L1), DNAH (L2), DNAD (L3 and L4), and a 1:1 mixture of DNAH and DNAD (L5) The open circular and relaxed ( ) states are indicated by oc and 0, respectively The most abundant topoisomer ... Recommendation of future research 109 References 113 v Summary In this thesis, the molecular transportation properties and the structure of supercoiled DNA is investigated To study dynamic properties of ... mixture of DNAH and DNAD (L3) and DNAD (L4) 28 FIG 2.7 Gel electrophoresis with mg/L chloroquine phosphate The lanes are: relaxed DNAH (L1), DNAH (L2), a 1:1 mixture of DNAH and DNAD (L3) and DNAD (L4)...

Ngày tải lên: 11/09/2015, 10:06

... three-dimensional structure of one tRNAspecies and to discuss the extent to which it explains and makesunderstandable various aspects of the chemistry and solution behavior of this and other tRNA ... interaction of Dand T¢;Cloops by augmenting stacking interaction Stabilizes T~C loop aStandard symbols used for referring to basesandto their atoms Rstands for a purineandYstands for a are pyrimidine ... three-stranded molecule consisting of one strand of poly(rA) and two strands of poly(rU) (165) pointed out that the second uracil residue could form H bonds with the amino group of adenine (N6) and...

Ngày tải lên: 13/03/2014, 19:38

... ‘open’ (standard conformation; PDB 1YC0) and ‘closed’ (nonstandard conformation; PDB 1YBW) HGFA forms are superimposed, with the two different 220-loop conformations shown in cyan and magenta, ... (standard) active site conformation The determined HGFA structures reveal three different conformational states of the active site region: a catalytically competent (standard) conformation, and ... of the catalytically competent structure are the ‘oxyanion hole’ formed by the amide nitrogens of Ser195 and Gly193, and substrate-binding subsites (S1, S2, S3, and S4), which interact with the...

Ngày tải lên: 15/03/2014, 11:20

... prominent bands employing the Weber and Osborn protocol In this study on D magna Hb subunits, three bands were found using the Laemmli protocol and only a single band with the Weber and Osborn ... separation of D magna Hb subunits into three different bands (Fig 4A) with molecular masses of 40.0, 38.1 and 35.1 kDa (pale D magna) and 40.0, 36.9 and 35.1 kDa (red D magna) As such separations may ... posttranslational and postfolding event, which affects the structure of a protein by determining the secondary, tertiary and quaternary structure (aggregation, multimerization) and occurs only...

Ngày tải lên: 16/03/2014, 13:20

... interaction between S and C depends on the magnitude and relative orientation of the local fields of S and C and the dielectric properties and distances through the conducting medium All uncharged dipole ... other hand, the field effect of the negatively charged groups (SO3- and O-) and the H-bond of the second OH with the =N will raise the second pKa2 and overcome the resonance contribution and the ... uncharged in strongly acidic solutions and negatively charged in sufficiently alkaline solutions The basic groups are positively charged (protonated) in a strongly acidic solution and are uncharged...

Ngày tải lên: 22/03/2014, 14:20

... Hemoglobin and Myoglobin and Their Reactions with Ligands Elsevier, North-Holland Publishing, Amsterdam, the Netherlands Dickerson, R.E & Geis, I (1983) Hemoglobin: Structure, Function, Evolution and ... in the crystal structure of Pe metHbH2O [16] and as conrmed herein by solution 1H NMR of Pe metMbCN Proximal and distal residues are shown as rectangles and circles, respectively, and arrows connecting ... ligand to participate in H-bonding to the ligated cyanide The van der Waals surfaces for the Tyr32(B10) Og and the 10 tilted cyanide ligand are shown in Fig and establish that the Tyr Og and...

Ngày tải lên: 23/03/2014, 17:22

... Neurovirulence and Neurosusceptibility: Clues to Understanding Flavivirus- and Dengue-Induced Encephalitis 219 Myriam Lucia Velandia and Jaime E Castellanos Chapter 12 Vaccines and Antiviral Drugs ... York and London 141-170 24 Viral Genomes – Molecular Structure, Diversity, Gene Expression Mechanisms and Host-Virus Interactions Friesen, P.D., and M.S Nissen (1990) Gene organization and transcription ... of TN-368 and Ld652Y, derived from ovarian tissues (Burand and Lu 1997, Lu and Burand 2001, Raina and Lupiani 2006) 1.1 Infection cycles and gene expression Only very limited data on the infection...

Ngày tải lên: 31/03/2014, 19:20

... lignin structure and monomeric composition have indeed been found and confirmed between plant species (Logan and Thomas, 1985), between plant organs and tissues grown either in vitro or in vivo and ... detail, heterogeneity in lignin formation and molecular structure, has been demonstrated in the case of gymnosperms (Terashima and Fukushima, 1988) and in the case of angiosperms (Higuchi, 19135; ... monocotyledons (grasses and bamboos) and Salicaceae (poplars) Ester bonds of phenolic acids to C and Cy-hydroxyls of a monomeric propane chains (Fig 1C5to Molecular associations and cell wall lignification...

Ngày tải lên: 09/08/2014, 03:24

... glucose transport and glucose transporter-1 expression by IL-1β in normal and osteoarthritis chondrocytes (a) 2-Deoxy-D-glucose ( 2and osteoarthritis chondrocytes DG) transport into normal (n = 4) and ... Figure Basal glucose transport and glucose transporter-1 protein in normal and osteoarthritis chondrocytes (a) 2-Deoxy-D-glucose (2-DG) transport into chondrocytes normal (n = 6) and osteoarthritis ... study was therefore to determine and compare the ability of normal and OA chondrocytes to modulate the GLUT-1 content and glucose transport in response to high and low extracellular glucose concentrations,...

Ngày tải lên: 09/08/2014, 14:21

... field-effect transistor (OFET) and photovoltaic (PV) device applications This thesis seeks to understand several factors that influence nature of the charge carriers and their transport in these thiophene-based ... absorption fine structure spectroscopy (NEXFAS), UV-Vis spectroscopy and charge- modulated spectroscopy in both infrared and optical spectral regions, and detailed variable temperature and variable ... valence band while the empty *-orbitals form the conduction band The presence of a small but non-zero energy gap between the highest occupied molecular orbital (HOMO) and the lowest unoccupied molecular...

Ngày tải lên: 10/09/2015, 08:34

... to pursue PhD and offering me the scholarship And last but not least, this dissertation is dedicated to my family My parents are always standing with me and giving me endless love and encouragement ... wife is always showing her patience and thoughtfulness to my work, and sharing the joy and happiness with me I feel fortunate and happy I am your son/husband Yours, Li Chunwei March, 2009, in ... identify novel x gene markers and molecular pathways which underlie the NP pathogenesis and its response to GC treatment Two sets of NP biopsies, i.e., before the initiation and after oral GC treatment,...

Ngày tải lên: 10/09/2015, 15:49

... 3.3 Results and Discussion 72 3.3.1 The ab initio Molecular Structure and Energies of Glycolaldehyde 72 3.3.2 Intramolecular Interaction 74 3.3.3 Calculated Harmonic Frequencies and Rotation ... molecular Hamiltonian This is to determine the electronic structure of the molecule 1.3.1 Molecular Structure and Energy Studies on molecular structure are very basic, yet very important in computational ... categories: molecular mechanics and quantum mechanics 1.2 Molecular Mechanics (MM) Molecular mechanics is formulated based on the laws of classical (Newtonian) physics In many cases, large molecular...

Ngày tải lên: 14/09/2015, 13:07

... acceptor: phosphate buffer, initial pH 6.45 Fig 5.11 Coupled counter transport of electron and anion, and co -transport of electron and proton through PANI membrane Fig 5.12 Inverse maximal transmembrane ... increased and the charge neutrality of the polymer matrix in the doping process is maintained by the insertion of counterions Polarons and bipolarons are charge carriers generated upon doping or photo- excitation ... al., 1994) Upon ‘secondary doping’ effects, the molecular - 16 - conformation of PANI changes from a compact coil structure to an expanded structure, and acts to reduce π -conjugation defects in...

Ngày tải lên: 15/09/2015, 17:10

... standstill agreement Jensen and Meckling (1976) and Shleifer and Vishny (1986b) predict a positive correlation between INBLOCKB and the announcement effect Morck, Shleifer and Vishny (1988b) and ... evidence of Holdemess and Sheehan (1988), Mikkelson and Ruback (1985) and Barclay and Holdemess (1991) When McConnell and Servaes combine block ownership with ownership by officers and directors, the ... Hypothesis Jensen and Meckling (1976) and Leland and Pyle (1977) develop theory to show how insider ownership can affect the value of a firm Brickley, Lease and Smith (1988), Morck, Shleifer and Vishny...

Ngày tải lên: 30/09/2015, 16:58

Ngày tải lên: 25/10/2012, 10:02

... the efficacy of Valsalva maneuver on needle projection pain and hemodynamic responses during spinal puncture Methods and Materials This randomized clinical trial was performed in Dr.Shariati Hospital ... mild pain, 2= moderate pain and 3= severe pain, and visual analog scale of 0–10, where 0=no pain and 10= worst imaginable pain Agrawal et al used both, 4-point scale and VAS, in which the first ... had moderate and severe pain in valsalva group, where 24 (80%) in ball group and 21 (70%) in control group had moderate and sever pain Since Valsalva maneuver may induce Bradycardia and hypotension...

Ngày tải lên: 25/10/2012, 11:15

... Approximately similar mean and dispersion statistics have been observed by Pliner and Hobden (1992) in Canadian students; by Frank et al (1997) in US students; and by Frank and Hursti (1999) in a ... ®nding that was similar to US and Swedish populations (Frank & Hursti, 1999) Education is likely to enhance the access and exposures to various stimuli, events and issues, and thereby it can perhaps ... observations from DenÈ È È mark, Finland, Norway, and Sweden In H L Meiselman, Dimensions of the meal The science, culture, business, and art of eating (pp 191±201) Maryland: Aspen Raudenbush, B., &...

Ngày tải lên: 03/04/2013, 21:06