Search results for "Envelope"

Green Roofs as Effective Tools for Improving the Indoor Comfort Levels of Buildings—An Application to a Case Study in Sicily

2020

In the line of pursuing better energy efficiency in human activities that would result in a more sustainable utilization of resources, the building sector plays a relevant role, being responsible for almost 40% of both energy consumption and the release of pollutant substances in the atmosphere. For this purpose, techniques aimed at improving the energy performances of buildings&rsquo

Reduction Of Pulmonary Inflammation Through HIV-1 Envelope Protein GP120 In A Humanized Mouse Model Of Allergic Asthma Depends On Regulatory T Cells

2011

The design of sum-of-cisoids rayleigh fading channel simulators assuming non-isotropic scattering conditions

2010

In this letter, we introduce the Riemann sum method (RSM) as an effective tool for the design of sum-of-cisoids (SOC) simulators for narrowband mobile Rayleigh fading channels under non-isotropic scattering conditions. We compare the performance of the RSM with that of the generalized method of equal areas (GMEA) and the Lp-norm method (LPNM), which were until now the only methods available for the design of SOC simulators for non-isotropic scattering channels. The obtained results indicate that the RSM is better suited than the GMEA and the LPNM to emulate the channel's autocorrelation function (ACF), whereas the latter two methods are more precise regarding the approximation of the envelo…

Hepatīta B kora antigēna veidoto vīrusveidīgo daļiņu modificēšana vakcīnu prototipa izstrādei

2017

DENV vakcīnu izveide balstās galvenokārt, izmantojot dzīvus novājinātus vīrusus. 2015. gadā tika reģistrēta pirmā tetravalenta novājināta denges vīrusa vakcīna. Kā drošāks vakcīnas veids ir subvienību vakcīnas. Daudzsološākais DENV antigēns subvienību vakcīnas izveidē ir apvalka proteīna III domēns. Lai palielinātu antigēna subvienības imunogenitāti, tiek izmantotas vīrusveidīgās daļiņas (VLP) kā svešu antigēnu nesēji. Tā kā VLP ir pašnereplicējošas, tās tiek uzskatītas par drošākiem kandidātiem vakcīnu izveidē, salīdzinot ar dzīviem novājinātiem vīrusiem. Maģistra darba mērķis bija iegūt 2. serotipa denges vīrusa apvalka III domēnu (DV2-III) prezentējošas mutantās HBc VLP. Pētījumā tika pā…

Characterization of the DNA-binding activity of the E1 and E2 proteins and the E1/E2 complex of human papillomavirus type 33.

1997

The E1 and E2 proteins of papillomaviruses are essential for the initiation of viral DNA replication. We have purified the E2 protein of human papillomavirus type 33 (HPV-33) by immunoaffinity chromatography. The purified E2 protein bound with high affinity to all four consensus binding sites of HPV-33 (Kd approximately equal to 2 x 10(-10)M). A putative E2 binding site differing at one position in the second stem of the palindrome was not bound by E2. The E1 protein of HPV-33 purified by affinity chromatography using glutathione S-transferase as tag displayed specific DNA-binding activity in footprint analyses protecting HPV-33 nucleotides 7896 to 7909/1 to 18 from DNasel digestion. Hypers…

From linear quaterthiophene to sulflower: A comparative theoretical study

2009

Abstract In this paper, we report a theoretical study of four types of thiophene-based oligomers showing the same number of C C double bonds and very different molecular structures. The comparative study has been performed on the basis of B3LYP/6-31G∗∗ calculations. The way the thiophene rings are linked together has a remarkable influence on the molecular and electronic properties. Linear quaterthiophene and heptathienoacene show similar aromatic structures but a loss of π-conjugation is detected for the latter due to the condensation of thiophene rings. A blue shift of the most intense electronic transition is predicted for fused heptathienoacene compared with non-fused quaterthiophene. C…

Polysaccharide‐containing Cell‐wall Polymers of Archaea

2002

Introduction Historical Outline Chemical Structure Glutaminylglycan Heteropolysaccharide Methanochondroitin Pseudomurein S-Layer Lipoglycan Occurrence Functions Biochemistry Biosynthesis Biological Activity Molecular Genetics Biodegradation Methanochondroitin Pseudomurein Production (Producers, World market, Applications, Patents) Outlook and Perspectives Acknowledgements Keywords: glutaminylglycan; heteropolysaccharide; methanochondroitin; pseudomurein; S-layer (glyco-)protein; Archaea; cell envelope; cell-wall polysaccharides

FT-IR spectroscopic investigation of bacterial cell envelopes from Zymomonas mobilis which have different surface hydrophobicities

2013

Abstract Changes in the cell envelope composition of bacteria Zymomonas mobilis 113S which resulted in varied cell surface hydrophobicity (CSH) were examined using FT-IR-spectroscopy and conventional methods of biochemical analysis. Significant differences in all analyses were detected between hydrophilic and hydrophobic compounds in the envelopes of Z. mobilis . A significant positive linear relationship ( P Z. mobilis and the ratio of absorbance band intensities assigned to the CH 2 and CH 3 vibrations from lipids as well as the asymmetric and symmetric stretching vibrations of these methylene and methyl groups. Differences were also seen between the ratio of band absorbances arising from…

Crystal structure and Hirshfeld surface analysis of (E)-3-(benzylideneamino)-5-phenylthiazolidin-2-iminium bromide

2020

The central thiazolidine ring of the title salt, C16H16N3S+center dot Br-, adopts an envelope conformation, with the C atom bearing the phenyl ring as the flap atom. In the crystal, the cations and anions are linked by N-H center dot center dot center dot Br hydrogen bonds, forming chains parallel to the b-axis direction. Hirshfeld surface analysis and two-dimensional fingerprint plots indicate that the most important contributions to the crystal packing are from H center dot center dot center dot H (46.4%), C center dot center dot center dot H/H center dot center dot center dot C (18.6%) and H center dot center dot center dot Br/Br center dot center dot center dot H (17.5%) interactions.

All-trans to 11-cis retinol isomerization in nuclear membrane fraction from bovine retinal pigment epithelium

1991

Abstract Isomerization of all-trans to 11-cis retinol has been studied in a membrane preparation from the nuclear fraction of bovine retinal pigment epithelium. When the nuclear membrane preparation deprived of endogenous retinoids is incubated with 4·5 μ m all-trans-retinol, the mean value calculated for the isomerase activity is 1·32 nmol 11-cis retinol formed hr−1 mg protein−1. Simultaneous formation of all-trans and 11-cis retinyl esters is also observed in the nuclear preparation. When assayed under the same experimental condition, RPE 150 000 g post-nuclear sediment shows about 70% of the isomerase activity found in the nuclear membrane fraction. Treatment of the nuclear membrane frac…