Search results for "hell"
showing 10 items of 1035 documents
Self-assembly of semiflexible polymers confined to thin spherical shells
2018
Confinement effects are critical for stiff macromolecules in biological cells, vesicles, and other systems in soft matter. For these molecules, the competition between the packing entropy and the enthalpic cost of bending is further shaped by strong confinement effects. Through coarse-grained molecular dynamics simulations, we explore the self-assembly of semiflexible polymers confined in thin spherical shells for various chain lengths, chain stiffnesses, and shell thicknesses. Here, we focus on the case where the contour and persistence length of the polymers are comparable to the radius of the confining cavity. The range of ordered structures is analyzed using several order parameters to …
Local structure and dynamics of wurtzite‐type ZnO from simulation‐based EXAFS analysis
2014
Conventional methods of EXAFS data analysis are often limited to the nearest coordination shells of the absorbing atom due to the difficulties in accurate accounting for the so-called multiple-scattering effects. Besides, it is often difficult to resolve the non-equivalent groups of atoms in a single coordination shell due to strong correlation between structural parameters. In this study we overcome these problems by applying two different simulation-based methods, i.e., classical molecular dynamics (MD) and reverse Monte with evolutionary algorithm (EA), to the analysis of the Zn K-edge EXAFS data for wurtzite-type bulk ZnO. The RMC/EA-EXAFS method allowed us to separate the contributions…
Quantum and carbon dots conjugated molecularly imprinted polymers as advanced nanomaterials for selective recognition of analytes in environmental, f…
2021
Abstract Samples with complex matrix analyzed during explanation of pathogenesis of various diseases and food or environmental monitoring request advanced analytical and instrumental devices. Among the materials used for described purposes, quantum (QDs) or carbon dots (CDs) layered by molecularly imprinted polymer (MIP) shells have gained widespread attention. Unique optical and physicochemical properties of QDs/CDs together with high MIPs selectivity make the QD/CD-MIP conjugates capable of adsorbing specific target molecules – such a binding event is then transduced as the optical signal of the response by the QDs/CDs. This review includes brief introduction on principles of imprinting p…
Bivalve mollusks shells valorisation and recycling: market potentiality and novel building products
2023
Construction is a fundamental driver of the world economy, recognized as a sector that generates a great contribution to the social and economic development. At the same time, it shows an enormous environmental impact through an unstoppable consumption of non-renewable resources, a high energy consumption, and an associated atmospheric emission of pollutant. Consequently, the research and development of novel and green production processes and sustainable building materials is of paramount importance. The sustainability of materials and production processes could be improved by enhancing and reusing wastes from various industrial sectors. In this paper, the fishery sector will be analysed, …
A pragmatic study of nonsense, from Lewis Carroll to the Monty Python
2010
This dissertation consists in a study of verbal exchanges in nonsense literature, from the last quarter of the nineteenth century and one of the two fathers of the genre, Lewis Carroll, to the last quarter of the twentieth century and his glorious heirs, the Monty Python. The corpus is taken from the whole of English-speaking nonsense literature, be it English (Lewis Carroll, the Monty Python, N.F. Simpson), Canadian (Stephen Leacock), or American (Robert Benchley, Donald Ogden Stewart, Joseph Heller and the Marx Brothers). As the title indicates, the study of verbal exchanges will rely on pragmatic analysis, pragmatics being the study of how language works as a practice, in social context.…
Purity rules in Pentecostal Uganda. Towards an analysis of relational rulework
2022
Rules concerning romantic relationships and sex—what we term ‘purity rules’—are central to Pentecostalism in Uganda. In public church arenas, the born-again variant of the rules laid down during Uganda’s ‘ABC’ response to HIV/AIDS — ‘abstain till marriage and be faithful once you marry’—are presented as clear and non-negotiable. Yet in church members’ lives, and in their conversations with each other or in small church groups, space is often created for interpretation and deliberation about the officially strict rules. In this article, we use ethnographic material from fieldwork in urban Pentecostal churches in Uganda to describe how rules work on people, and people work on rules. We descr…
One-piece micropumps from liquid crystalline core-shell particles
2012
Responsive polymers are low-cost, light weight and flexible, and thus an attractive class of materials for the integration into micromechanical and lab-on-chip systems. Triggered by external stimuli, liquid crystalline elastomers are able to perform mechanical motion and can be utilized as microactuators. Here we present the fabrication of one-piece micropumps from liquid crystalline core-shell elastomer particles via a microfluidic double-emulsion process, the continuous nature of which enables a low-cost and rapid production. The liquid crystalline elastomer shell contains a liquid core, which is reversibly pumped into and out of the particle by actuation of the liquid crystalline shell i…
Factors affecting physiology of mycelial growth and mushrooms aroma production in solid state fermentation
1997
L'effet de différentes sources d'azote et du rapport C/N sur la croissance mycélienne et sur l'intensité aromatique dégagée par trois espèces du genre #Morchella$ et d'une espèce du genre #Pleurotus$ a été étudié sur agar puis sur support solide. Les résultats ont été à la base du choix du nitrate de sodium comme source d'azote, du rapport C/N de 10 ainsi que du mycélium de #M. esculenta$ come source potentielle pour la production de l'arôme de morille. L'identification des molécules contribuant à l'arôme réalisée par CPG-SM a révélé de larges différences entre #M. esculenta$ et #P. cornucopiae$. Dans la mesure où l'arôme produit par le mycélium rappelle celui du carpophore, ce résultat con…
Persistent and recurrent achalasia after Heller myotomy: analysis of different patterns and long-term results of reoperation.
2007
Hypothesis Two groups of patients with inadequate therapeutic success after surgical treatment for achalasia can be identified, patients with type 1 recurrence (early recurrence after technical failure of myotomy or a scarring process requiring remyotomy) and patients with type 2 recurrence (late recurrence with irreversible progression of the disease and development of megaesophagus requiring esophagectomy). Design Prospective study. Setting University-based tertiary care center. Patients One hundred sixty-three patients undergoing surgery for achalasia during 20.3 years. Interventions Conventional remyotomy for type 1 recurrence (group 1) and esophagectomy (transhiatal or transthoracic) f…
Effects of pneumatic dilation and myotomy on esophageal function and morphology in patients with achalasia.
2005
Only two treatment modalities–pneumatic dilation and Heller myotomy–promise long-term relief from dysphagia and regurgitation in patients with achalasia. The objective of this study was to determine whether both options differ in their effects on esophageal function, morphology, and improvement in symptoms. Eighty-nine patients diagnosed with achalasia between January 1980 and December 2002 at a single center were enrolled in this study. Sixty-four patients underwent pneumatic dilation and 25 Heller myotomy in combination with an anterior semifundoplication (Dor procedure). Clinical evaluation (Eckardt-Score), esophageal manometry, and barium swallow were performed before and within 6 mont…