cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Synthesis and characterisation of a calix[4]pyrrole functional polystyrene via ‘click chemistry’ and its use in the extraction of halide anion salts
Creators: name: Aydogan, Abdullah
Publisher: name: Taylor & Francis
Year: 2015
Subjects: subject: Biophysics
subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Inorganic Chemistry

description: A polystyrene with pendant calix[4]pyrroles was prepared via ‘click reaction’ strategy. First, a poly(styrene-co-chloromethylstyrene) with approximately 12% of chloro groups was prepared by conventional free radical polymerisation. The chloro groups were then converted to azido groups using NaN3 in N,N-dimethylformamide. An alkyne-functionalised calix[4]pyrrole was then coupled to the azido-functionalised polystyrene by click chemistry with high efficiency. The resulting polystyrene with pendant calix[4]pyrroles was used to extract fluoride and chloride anions (as their tetrabutylammonium salts) from their aqueous solutions to organic media.
Structural control in Cu(II) coordination polymers through the conformational flexibility of a 2,3-dipyridyl ketone oxime ligand
Creators: name: Argyle, Victoria J.
name: Roxburgh, Marina
name: Hanton, Lyall R.
Publisher: name: Taylor & Francis
Year: 2015
Subjects: Biological Sciences
Chemistry
Earth and Environmental Sciences
Cell Biology
Physics
Biochemistry
Biophysics

description: Four new compounds prepared from the ligand 2,3-dipyridyl ketone oxime (L23) with varying Cu(II) salts were synthesised and structurally characterised, {[Cu(L23)(L23-H)](ClO4)}∞ (1), {[Cu(L23)(L23-H)](BF4)¼(H2O)}∞ (2), [Cu3(L23-H)2(L23′)(NO3)2OH]2(NO3)2(C3H8O)6 (3) and [Cu(L23)Cl2]∞ (4). The effects of differing counterions, as well as the rotational conformational versatility of L23, were demonstrated by the differing polymeric structures that were observed. Complex 1 and 2 both existed as 1-D polymeric chains with L23 acting as a pseudo-tetradentate ligand through an oxime–oximato bridge. Complex 1 formed a helical arrangement while 2 formed a chiral chain with both 1 and 2 exhibiting similar chiral packing. Complex 3 formed an unusual inverse–9–metallacrown–3 complex, with one of the L23 ligands in a zwitterionic form. Complex 4 was present as a simple 1-D meso-helical chain.
Silver complexes of symmetrically 4,5-disubstituted 3,6-di(3,5-dimethyl-1H-pyrazol-1-yl)pyridazine
Creators: name: Bodman, Samantha E.
name: Fitchett, Christopher M.
Publisher: name: Taylor & Francis
Year: 2015
Subjects: subject: Plant Biology
subject: FOS: Biological sciences
subject: Mathematics
subject: FOS: Mathematics
subject: Information and Computing Sciences
subject: Biological Sciences
subject: Sociology
subject: FOS: Sociology
subject: Chemistry
subject: Pharmacology
subject: Molecular Biology
subject: Cell Biology
subject: Medicine
subject: Biochemistry
subject: Biophysics

description: The reaction of ligands based on 3,6-di(3,5-dimethyl-1H-pyrazol-1-yl)pyridazine having carbocyclic rings fused to the pyridazine ring; 1,4-bis(3,5-dimethylpyrazol-1-yl)-6,7-dihydro-5H-cyclopenta[d]pyridazine (L1), 1,4-bis(3,5-dimethylpyrazol-1-yl)-5,6,7,8-tetrahydrophthalazine (L2) and 7,10-bis(3,5-dimethyl-1H-pyrazol-1-yl)-8,9-diazafluoranthene (L3) with silver triflate gave complexes 1–3. Characterisation of these using single-crystal X-ray structure determination clearly showed that the steric bulk of the carbocycle stops the 3,5-dimethyl-1H-pyrazole from chelating metal atoms. Ligands L1 and L3 were tetrabridging (complexes 1 and 3), while L2 formed a one-dimensional zigzag polymer (complex 2).
PER UNO SVILUPPO RESILIENTE DEI TERRITORI INTERNI: UNO STRUMENTO OPERATIVO
Creators: name: Galderisi, Adriana
name: Bello, Giovanni
name: Limongi, Giada
Publisher: name: BDC. Bollettino Del Centro Calza Bini
Year: 2021

description: Il contributo delinea uno strumento operativo per comprendere le caratteristiche di resilienza delle aree interne: troppo spesso, infatti, le politiche di “ricentralizzazione” di tali territori assumono la resilienza quale “traguardo” da conseguire, in assenza di strumenti atti ad analizzare gli attuali livelli di resilienza e valutare, su tale base, l’efficacia delle politiche messe in campo. La costruzione della Matrice di Resilienza Territoriale fonda su un’interpretazione della resilienza come insieme delle caratteristiche che rendono un sistema territoriale in grado di resistere, adattarsi o trasformarsi a fronte sia degli stress cui esso è sottoposto sia dei potenziali shock che potrebbe subire a causa dei numerosi fattori di pericolosità che spesso interessano i territori interni in Italia. La Matrice viene testata su un’area interna delle Regione Campania: l’area del Matese nella Provincia di Caserta. Parole chiave: Aree interne, matrice di resilienza territoriale, indicatori di resilienza
description: BDC. Bollettino Del Centro Calza Bini, Vol 21 No 2 (2021): Inner and Marginalized Areas: Geographies and Alliances Towards New Cohesion Policies
title: Ð¢ÐµÐ¾ÑÐµÑÐ¸ÑÐµÑÐºÐ¸Ðµ Ð¾ÑÐ½Ð¾Ð²Ñ Ð¿ÑÐ¾Ð³ÑÐµÑÑÐ¸Ð²Ð½ÑÑ ÑÐµÑ Ð½Ð¾Ð»Ð¾Ð³Ð¸Ð¹
title: Ð»Ð°Ð±Ð¾ÑÐ°ÑÐ¾ÑÐ½ÑÐ¹ Ð¿ÑÐ°ÐºÑÐ¸ÐºÑÐ¼
titleType: Subtitle
Creators: name: ÐÐ¾ÑÐ¾ÑÐºÐ¸Ñ, ÐÐ¸ÑÐ°Ð¸Ð»
name: ÐÐµÐ´ÐºÐ¾, ÐÐ»Ð°Ð´Ð¸Ð¼Ð¸Ñ
name: ÐÐ¾Ð¿Ð¾Ð², ÐÐ»ÐµÐºÑÐ°Ð½Ð´Ñ
name: Ð¡ÑÐµÐ¿Ð°Ð½Ð¾Ð², ÐÐ²Ð³ÐµÐ½Ð¸Ð¹
Publisher: name: ÐÐ·Ð´-Ð²Ð¾ ÐÐ¾Ð»Ð¸ÑÐµÑÐ½. ÑÐ½-ÑÐ°
Year: 2013
Subjects: ÐÐ°ÑÐ¸Ð½Ð¾ÑÑÑÐ¾ÐµÐ½Ð¸Ðµ

description: Ð¡Ð¾Ð¾ÑÐ²ÐµÑÑÑÐ²ÑÐµÑ ÑÐ¾Ð´ÐµÑÐ¶Ð°Ð½Ð¸Ñ ÑÐ°Ð·Ð´ÐµÐ»Ð¾Ð² Ð´Ð¸ÑÑÐ¸Ð¿Ð»Ð¸Ð½Ñ âÐ¢ÐµÑÐ½Ð¾Ð»Ð¾Ð³Ð¸Ñ ÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¸Ð¾Ð½Ð½ÑÑ Ð¼Ð°ÑÐµÑÐ¸Ð°Ð»Ð¾Ð²â. ÐÑÐ¸Ð²ÐµÐ´ÐµÐ½Ñ Ð¼Ð°ÑÐµÑÐ¸Ð°Ð»Ñ, ÑÐ°ÑÐºÑÑÐ²Ð°ÑÑÐ¸Ðµ ÑÐ¾Ð´ÐµÑÐ¶Ð°Ð½Ð¸Ðµ Ð¸ Ð¼ÐµÑÐ¾Ð´Ð¸ÐºÑ Ð¿ÑÐ¾Ð²ÐµÐ´ÐµÐ½Ð¸Ñ Ð»Ð°Ð±Ð¾ÑÐ°ÑÐ¾ÑÐ½ÑÑ ÑÐ°Ð±Ð¾Ñ Ð¿Ð¾ ÐºÑÑÑÑ âÐ¢ÐµÐ¾ÑÐµÑÐ¸ÑÐµÑÐºÐ¸Ðµ Ð¾ÑÐ½Ð¾Ð²Ñ Ð¿ÑÐ¾Ð³ÑÐµÑÑÐ¸Ð²Ð½ÑÑ ÑÐµÑÐ½Ð¾Ð»Ð¾Ð³Ð¸Ð¹â. Ð Ð°ÑÑÐ¼Ð¾ÑÑÐµÐ½Ñ Ð¾ÑÐ½Ð¾Ð²Ð½ÑÐµ ÑÐ¸Ð·Ð¸ÐºÐ¾-ÑÐ¸Ð¼Ð¸ÑÐµÑÐºÐ¸Ðµ ÑÐ²Ð»ÐµÐ½Ð¸Ñ Ð¸ Ð·Ð°ÐºÐ¾Ð½Ð¾Ð¼ÐµÑÐ½Ð¾ÑÑÐ¸, Ð¸ÑÐ¿Ð¾Ð»ÑÐ·ÑÐµÐ¼ÑÐµ Ð¿ÑÐ¸ ÑÐµÐ°Ð»Ð¸Ð·Ð°ÑÐ¸Ð¸ Ð¿ÑÐ¾Ð³ÑÐµÑÑÐ¸Ð²Ð½ÑÑ ÑÐµÑÐ½Ð¾Ð»Ð¾Ð³Ð¸ÑÐµÑÐºÐ¸Ñ Ð¿ÑÐ¾ÑÐµÑÑÐ¾Ð² Ð² Ð¼Ð°ÑÐ¸Ð½Ð¾ÑÑÑÐ¾ÐµÐ½Ð¸Ð¸, ÑÐ¾Ð·Ð´Ð°ÑÑÐµÐ¼ ÑÐµÑÐ½Ð¾Ð»Ð¾Ð³Ð¸ÑÐµÑÐºÑÑ Ð±Ð°Ð·Ñ Ð±Ð¾Ð»ÑÑÐ¸Ð½ÑÑÐ²Ð° Ð¾ÑÑÐ°ÑÐ»ÐµÐ¹ Ð¿ÑÐ¾Ð¼ÑÑÐ»ÐµÐ½Ð½Ð¾ÑÑÐ¸. ÐÑÐµÐ´Ð½Ð°Ð·Ð½Ð°ÑÐµÐ½Ð¾ Ð´Ð»Ñ ÑÑÑÐ´ÐµÐ½ÑÐ¾Ð² Ð²ÑÑÑÐ¸Ñ ÑÑÐµÐ±Ð½ÑÑ Ð·Ð°Ð²ÐµÐ´ÐµÐ½Ð¸Ð¹, Ð¾Ð±ÑÑÐ°ÑÑÐ¸ÑÑÑ Ð¿Ð¾ Ð½Ð°Ð¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸ÑÐ¼ Ð¿Ð¾Ð´Ð³Ð¾ÑÐ¾Ð²ÐºÐ¸ Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ¾Ð² 080100 âÐ­ÐºÐ¾Ð½Ð¾Ð¼Ð¸ÐºÐ°â Ð¸ 080200 âÐÐµÐ½ÐµÐ´Ð¶Ð¼ÐµÐ½Ñâ, Ð¼Ð¾Ð¶ÐµÑ Ð±ÑÑÑ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¾ Ð¿ÑÐ¸ Ð¿Ð¾Ð´Ð³Ð¾ÑÐ¾Ð²ÐºÐµ Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ¾Ð² Ð¿Ð¾ Ð½Ð°Ð¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ñ 150000 âÐÐµÑÐ°Ð»Ð»ÑÑÐ³Ð¸Ñ, Ð¼Ð°ÑÐ¸Ð½Ð¾ÑÑÑÐ¾ÐµÐ½Ð¸Ðµ Ð¸ Ð¼ÐµÑÐ°Ð»Ð»Ð¾Ð¾Ð±ÑÐ°Ð±Ð¾ÑÐºÐ°â.
description: ÐÐµÑÐ°ÑÐ°ÐµÑÑÑ Ð¿Ð¾ ÑÐµÑÐµÐ½Ð¸Ñ ÑÐµÐ´Ð°ÐºÑÐ¸Ð¾Ð½Ð½Ð¾-Ð¸Ð·Ð´Ð°ÑÐµÐ»ÑÑÐºÐ¾Ð³Ð¾ ÑÐ¾Ð²ÐµÑÐ° Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¾Ð³Ð¾ Ð³Ð¾ÑÑÐ´Ð°ÑÑÑÐ²ÐµÐ½Ð½Ð¾Ð³Ð¾ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¾Ð³Ð¾ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑÐ°.
title: Paratexte_Les secrets de la cuisine d'amateur
Creators: name: AmateurS
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020

description: Paratexte
description: ID_PARA_00671
Direct numerical simulations of microlayer formation during heterogeneous bubble nucleation
Creators: name: Saini, Mandeep
name: Chen, Xiang Bin
name: Zaleski, Stephane
name: Fuster, Daniel
Publisher: name: arXiv
Year: 2024
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: In this article, we present direct numerical simulation results for the expansion of spherical cap bubbles attached to a rigid wall due to a sudden drop in the ambient pressure. The critical pressure drop beyond which the bubble growth becomes unstable is found to match well with the predictions from classical theory of heterogeneous nucleation imposing a quasi-static bubble evolution. When the pressure drop is significantly higher than the critical value, a liquid microlayer appears between the bubble and the wall. In this regime, the interface outside the microlayer grows at an asymptotic velocity that can be predicted from the Rayleigh--Plesset equation, while the contact line evolves with another asymptotic velocity that scales with a visco-capillary velocity that obeys the Cox--Voinov law. In general, three distinctive regions can be distinguished: the region very close to the contact line where dynamics is governed by visco-capillary effects, an intermediate region controlled by inertio-viscous effects away from the contact line yet inside the viscous boundary layer, and the region outside the boundary layer dominated by inertial effects. The microlayer forms in a regime where the capillary effects are confined in a region much smaller than the viscous boundary layer thickness. In this regime, the global capillary number takes values much larger then the critical capillary number for bubble nucleation, and the microlayer height is controlled by viscous effects and not surface tension.
OLTRE LA “NON-COESIONE”. VERSO POLITICHE DI COESIONE TERRITORIALE AUTONOME, NON FRAGILI E COEVOLUTIVE
Creators: name: De Bonis, Luciano
Publisher: name: BDC. Bollettino Del Centro Calza Bini
Year: 2021

description: Il contributo propone una riflessione su alcune questioni ritenute fondamentali per l’evoluzione (e dell’evoluzione) delle politiche di coesione territoriale. La prima questione riguarda la natura “originaria” di tali politiche, in relazione alla loro somiglianza alle politiche di “riequilibrio territoriale” italiane della fine degli anni Sessanta, inizio anni settanta del novecento. La seconda questione si riferisce all’interpretazione dell’approccio place-based comunitario, in relazione alle possibilità di una sua reinterpretazione non mainstream. Una terza e ultima questione riguarda il dualismo specie umana/ambiente, che connota ancora fortemente le politiche di coesione territoriale multilivello, in relazione alla possibilità di interpretare viceversa il territorio come un neo-ecosistema coevolutivo. Parole chiave: aree interne, diverse marginalità, politiche di coesione
description: BDC. Bollettino Del Centro Calza Bini, Vol 21 No 2 (2021): Inner and Marginalized Areas: Geographies and Alliances Towards New Cohesion Policies
Antibacterial activity of cyclo(L-Pro-L-Tyr) and cyclo(D-Pro-L-Tyr) from Streptomyces sp. strain 22-4 against phytopathogenic bacteria
Creators: name: Pakorn Wattana-Amorn
name: Waranya Charoenwongsa
name: Williams, Christopher
name: Crump, Matthew P.
name: Busaya Apichaisataienchote
Publisher: name: Taylor & Francis
Year: 2015
Subjects: subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Plant Biology
subject: Computational Biology

description: Two bioactive cyclic dipeptides, cyclo(L-Pro-L-Tyr) and cyclo(D-Pro-L-Tyr), were isolated from the culture broth of Streptomyces sp. strain 22-4 and tested against three economically important plant pathogens, Xanthomonas axonopodis pv. citri, Ralstonia solanacearum and Clavibacter michiganensis. Both cyclic dipeptides were active against X. axonopodis pv. citri and R. Solanacearum with MIC of 31.25 μg/mL. No activity could be observed against C. michiganensis.
Anonyme, Grand coutumier de Normandie, 1er quart du 14e siècle
Creators: name: Anonyme
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2019

description: Source: Petit Palais, Musée des Beaux-arts de la Ville de Paris
description: Relation: vignette : https://www.nakala.fr/data/11280/e6b2f2be
description: http://parismuseescollections.paris.fr/fr/petit-palais/oeuvres/le-grand-coutumier-de-normandie
description: created: 1er quart du 14e siècle
SUI MARGINI: UNA MAPPATURA DI AREE INTERNE E DINTORNI
Creators: name: Esposito De Vita, Gabriella
name: Marchigiani, Elena
name: Perrone, Camilla
Publisher: name: BDC. Bollettino Del Centro Calza Bini
Year: 2021

description: L’articolo illustra i risultati di un percorso che le autrici stanno sviluppando, sia attraverso esperienze di ricerca presso le proprie istituzioni, sia con l’animazione del gruppo tecnico “Aree interne e dintorni” della Società Italiana degli Urbanisti (SIU). Partendo da un excursus critico di politiche internazionali e nazionali che, nel tempo, hanno cercato di affrontare (con esiti ancora limitati) i fenomeni di polarizzazione e il simmetrico processo di periferizzazione e depauperamento di vasti territori, si sta procedendo a una riflessione sulle modalità di mappatura di diverse forme di squilibrio e attivismo territoriale. In tale ottica, la restituzione dei risultati di un’indagine su esperienze di rigenerazione in diverse aree interne e periferiche del nostro Paese offre una prospettiva interpretativa “fuori baricentro”, da cui è possibile iniziare a ripensare gli approcci alla lettura delle dinamiche di marginalizzazione e i criteri per valutare gli effetti delle politiche volte a contrastarle. Parole chiave: aree interne, marginalizzazione, politiche di coesione
description: BDC. Bollettino Del Centro Calza Bini, Vol 21 No 2 (2021): Inner and Marginalized Areas: Geographies and Alliances Towards New Cohesion Policies
Introduzione. Uno sguardo “fuori baricentro” sulle aree interne
Creators: name: Esposito De Vita, Gabriella
name: Marchigiani, Elena
name: Perrone, Camilla
Publisher: name: BDC. Bollettino Del Centro Calza Bini
Year: 2021

description: Il volume raccoglie i risultati in fieri di un percorso di ricerca e riflessione critica su “Aree interne e marginalizzate: geografie e alleanze per nuove Politiche di Coesione”, che si sta sviluppando a partire dal dibattito sugli esiti della Strategia Nazionale per le Aree Interne (SNAI), sia in ambito accademico che attraverso il confronto con players territoriali. Come in larga parte del contesto europeo, anche in Italia i processi di polarizzazione insediativa e le dinamiche di trasformazione intorno ad aree urbane centrali – dove si addensano innovazione tecnologica, hub infrastrutturali, attività terziarie e produttive e catalizzatori socio-culturali – si sono accompagnate al progressivo depauperamento e spopolamento di ampie porzioni del territorio e all’inasprirsi di disuguaglianze sociali, marginalizzazione sociale ed economica, squilibri ambientali. La geografia di tali diseguaglianze oggi si articola in molte e diverse situazioni spaziali e condizioni di perifericità, che variamente si estendono dai bordi di aree urbane e metropolitane, ai territori della dispersione, agli ambiti rurali e montani. Nella precedente stagione della programmazione europea e nazionale, la volontà di cercare di invertire questi processi ha orientato la Strategia Nazionale per le Aree Interne, intesa quale contraltare delle politiche per le città e le aree metropolitane. L’urgenza di mantenere tali istanze al centro delle politiche per la coesione territoriale (ampliandone altresì le ricadute spaziali) è stata riportata alla ribalta dai discorsi che hanno accompagnato l’emergenza connessa alla pandemia di Covid-19. In questi discorsi, l’appello a nuovi ritmi e stili di vita e alla riscoperta di borghi e villaggi sovente appare ancora privo di una solida base critica, attenta alle domande dei territori, alle loro diverse emergenze e crisi, in primis sociali, economiche, ambientali ma anche infrastrutturali e funzionali.
description: BDC. Bollettino Del Centro Calza Bini, Vol 21 No 2 (2021): Inner and Marginalized Areas: Geographies and Alliances Towards New Cohesion Policies
Editoriale
Creators: name: Fusco Girard, Luigi
Publisher: name: BDC. Bollettino Del Centro Calza Bini
Year: 2021

description: È questo un momento storico di straordinarie ed accelerate trasformazioni, oltre che di crescenti squilibri e conflitti. Lo sforzo è quello di interpretare lo status quo, creando/proponendo generalizzazioni: cercando di comprendere le relazioni di causa-effetto tra i fenomeni che leggiamo o riscontriamo, cercando di capire in anticipo quali possono essere sviluppi futuri dello status quo/realtà e soprattutto facendo opera di discernimento critico per ordinare/gerarchizzare ciò che è importante da ciò che è meno importante, da ciò che è assolutamente irrilevante. E quindi “compito” di un Centro di Ricerca diventa quello di proporre/elaborare possibili piste da offrire alla riflessione o da suggerire/seguire per realizzare possibili cambiamenti in una direzione complessivamente più desiderabile della città. La pandemia dovuta al Covid-19 sta evidenziando la limitata resilienza che caratterizza la struttura organizzativa complessiva della nostra società/città (a partire forse proprio da quella delle aree economicamente più ricche). Essa rende ancora più complessa la reazione alla sfida del cambiamento climatico. Ma nello stesso tempo, la pandemia ha fatto “riscoprire” l’importanza delle zone “interne” ed extraurbane (rispetto alle aree di concentrazione) nella ricerca di condizioni di maggiore salubrità e sicurezza.
description: BDC. Bollettino Del Centro Calza Bini, Vol 21 No 2 (2021): Inner and Marginalized Areas: Geographies and Alliances Towards New Cohesion Policies
Anion binding by fluorescent Fmoc-protected amino acids
Creators: name: Farrell, David P.
name: Sargent, Andrew L.
name: Allen, William E.
Publisher: name: Taylor & Francis
Year: 2016
Subjects: subject: Biophysics
subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Molecular Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences

description: Two non-natural amino acids with fluorescent urea side-chains were prepared from Fmoc-protected aspartic and glutamic acids. In acetonitrile solution, the emission of the Asp derivative is strongly quenched by HCO3−  or H2PO4−  (K ≥ 104 M− 1) but not by less-basic Cl−  or NO3− . Solutions containing excess bicarbonate ion appear peach-colored, with λabs at 394 and 495 nm ascribed to the anion complex and urea-deprotonated sensor, respectively. Corresponding fluorescence bands are observed at 475 and 579 nm. Dihydrogenphosphate is not sufficiently basic to remove H+ from the ground state of the fluorophore. However, deprotonation of the excited state occurs in the presence of>1 equiv of H2PO4−  (λem = 578 nm). According to 1H NMR in DMSO-d6, recognition of H2PO4−  occurs at the urea N–H groups and the amino acid backbone N–H. DFT techniques further predict that the backbone C = O group accepts an H-bond from the anion. The Glu derivative has lower affinity for anions; the additional CH2 group in its side-chain apparently sets the backbone N–H and C = O too far from the urea to contribute significantly to binding. To demonstrate suitability for standard Fmoc-based solid-phase peptide synthesis, the Asp derivative was incorporated into a 12-residue peptide.
ITC and NMR analysis of the encapsulation of fatty acids within a water-soluble cavitand and its dimeric capsule
Creators: name: Wang, Kaiya
name: Punidha Sokkalingam
name: Gibb, Bruce C.
Publisher: name: Taylor & Francis
Year: 2016
Subjects: subject: Biophysics
subject: Biochemistry
subject: Space Science
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Cancer

description: We report here NMR and Isothermal Titration Calorimetry studies of the binding of ionisable guests (carboxylate acids) to a deep-cavity cavitand. These studies reveal that the shortest guests favoured 1:1 complex formation, but the longer the alkyl chain the more the 2:1 host-guest capsule is favoured. For intermediate-sized guests, the equilibrium between these two states is controlled by pH; at low values the capsule containing the carboxylic acid guest is favoured, whereas as the pH is raised deprotonation of the guest favours the 1:1 complex. Interestingly, for one host–guest pair the energy required to decap the 2:1 capsular complex and form the 1:1 complex is sufficient to shift the pKa of the guest by ~3–4 orders of magnitude (4.1–5.4 kcal mol−1). The two largest guests examined form stable 2:1 capsules, with in both cases the guest adopting a relatively high energy J-shaped motif. Furthermore, these 2:1 complexes are sufficiently stable that at high pH guest deprotonation occurs without decapping of the capsule.
Badly behaving bipyridine: the surprising coordination behaviour of 5,5′-substituted-2,2′-bipyridine towards iron(II) and ruthenium(II) ions
Creators: name: Hasti Iranmanesh
name: Bhadbhade, Mohan
name: Haas, Nicholas De
name: Luis, Ena T.
name: Yan, Hong
name: Jiajia Yang
name: Beves, Jonathon E.
Publisher: name: Taylor & Francis
Year: 2015
Subjects: Chemistry
Biotechnology
Cell Biology
Biochemistry
Biophysics

description: A new tetrapyridine ligand, 5,5′-(3-pyridyl)-2,2′-bipyridine (2) was prepared from 5,5′-dibromo-2,2′-bipyridine (1) via Pd(0)-mediated Suzuki coupling. The reaction was performed either directly upon the free ligand, or upon its Ru(II) complex. The structures of [Ru(1)3](PF6)2 and [Ru(2)3](PF6)2 were studied in solution by NMR, and in the solid state by single crystal X-ray diffraction. Solution NMR data suggests distorted structures, consistent with the observed slow reactivity of the ligands towards Ru(II) ions, and their reluctance to coordinate to Fe(II) ions. However, solid-state X-ray data indicated little distortion from ideal geometries, suggesting the effect may be more electronic than steric in nature.
ERS’s SNAP Distribution Schedule Database Allows for New Research on Program Impacts
Creators: name: Todd, Jessica E.
name: Gregory, Christian A.
name: Todd, Jessica E.
name: Gregory, Christian A.
Publisher: name: Unknown
Year: 2019
Subjects: subject: Consumer/Household Economics
subject: Food Consumption/Nutrition/Food Safety
subject: Food Security and Poverty
subject: Health Economics and Policy
subject: Supplemental Nutrition Assistance Program (SNAP)
subject: Electronic Benefit Transfer (EBT)
subject: low-income
subject: food assistance
subject: Food Acquisition and Purchase Survey (FoodAPS)

description: Supplemental Nutrition Assistance Program (SNAP) participants receive their benefits in a lump-sum on a single day each month. States are allowed to stagger delivery of benefits over the month, with a portion of SNAP recipients receiving benefits each distribution day. States are increasingly likely to distribute SNAP benefits over a longer span of days. A new ERS data product provides distribution schedules for each State and the District of Columbia for 1998-2018.
Contribution of aquaculture on livelihood development of fish farmer at Noakhali, Bangladesh
Creators: name: Al-Asif, Abdulla
Publisher: name: figshare
Year: 2022
Subjects: subject: 160512 Social Policy
subject: FOS: Political science
subject: 160805 Social Change
subject: FOS: Sociology
subject: 220319 Social Philosophy
subject: FOS: Philosophy, ethics and religion
subject: 80709 Social and Community Informatics
subject: FOS: Media and communications
subject: 160806 Social Theory
subject: 160703 Social Program Evaluation
subject: 160801 Applied Sociology, Program Evaluation and Social Impact Assessment

description: The present study was conducted to assess the contribution of aquaculture on livelihood status of fish farmer at Noakhali sadar upazila. This research work was carried out during the period of February 2013 to July 2013. A total of 50 fish farmers were interviewed with a well-structured questionnaire. The survey revealed that average pond size was 0.48 ha with 40% of the farmers having ponds of single ownership, 20% having ponds of multiple-ownership, 30% having ponds of single lease and 10% having ponds of multiple leases. Poly culture of Indian major carps and exotic carps has been practiced by most of the farmers. Fish fingerlings were stocked from April to June and average stocking density was 12,370 fingerlings/ha. The average fish production cost was Tk 69,870/ha/yr. Although the living condition of the rural fish farmers were poor, livelihood outcomes were found positive and 88% of the farmers have improved their socioeconomic conditions through fish farming. The gross income and net profit were Tk. 1, 06,400 and Tk. 1, 00,000/ha/yr respectively. The average monthly income was in range of BDT 15,000-25,000. Their basic need like food, cloth, house, education and medical facility had changed after fish farming. The households have broadly improved their food consumption, family education, standards of living, purchasing power, choice and economic ability through fish farming. The constraints for sustainable pond fish farming in the areas were lack of technical knowledge of the farmers, disease of fishes, multiple ownership of the pond, higher production cost (mainly seeds and feed), insufficient supply of fry and fingerlings, lack of money and credit facilities and inadequate extension services. It is therefore essential to provide the necessary training facilities with institutional and organizational supports, credit facilities and extension services for sustainable fish production and livelihoods of rural fish farmers.
Anion binding by fluorescent Fmoc-protected amino acids
Creators: name: Farrell, David P.
name: Sargent, Andrew L.
name: Allen, William E.
Publisher: name: Taylor & Francis
Year: 2015
Subjects: subject: Biophysics
subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Molecular Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences

description: Two non-natural amino acids with fluorescent urea side-chains were prepared from Fmoc-protected aspartic and glutamic acids. In acetonitrile solution, the emission of the Asp derivative is strongly quenched by HCO3−  or H2PO4−  (K ≥ 104 M− 1) but not by less-basic Cl−  or NO3− . Solutions containing excess bicarbonate ion appear peach-colored, with λabs at 394 and 495 nm ascribed to the anion complex and urea-deprotonated sensor, respectively. Corresponding fluorescence bands are observed at 475 and 579 nm. Dihydrogenphosphate is not sufficiently basic to remove H+ from the ground state of the fluorophore. However, deprotonation of the excited state occurs in the presence of>1 equiv of H2PO4−  (λem = 578 nm). According to 1H NMR in DMSO-d6, recognition of H2PO4−  occurs at the urea N–H groups and the amino acid backbone N–H. DFT techniques further predict that the backbone C = O group accepts an H-bond from the anion. The Glu derivative has lower affinity for anions; the additional CH2 group in its side-chain apparently sets the backbone N–H and C = O too far from the urea to contribute significantly to binding. To demonstrate suitability for standard Fmoc-based solid-phase peptide synthesis, the Asp derivative was incorporated into a 12-residue peptide.
ITC and NMR analysis of the encapsulation of fatty acids within a water-soluble cavitand and its dimeric capsule
Creators: name: Wang, Kaiya
name: Punidha Sokkalingam
name: Gibb, Bruce C.
Publisher: name: Taylor & Francis
Year: 2015
Subjects: subject: Biophysics
subject: Biochemistry
subject: Space Science
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Cancer

description: We report here NMR and Isothermal Titration Calorimetry studies of the binding of ionisable guests (carboxylate acids) to a deep-cavity cavitand. These studies reveal that the shortest guests favoured 1:1 complex formation, but the longer the alkyl chain the more the 2:1 host-guest capsule is favoured. For intermediate-sized guests, the equilibrium between these two states is controlled by pH; at low values the capsule containing the carboxylic acid guest is favoured, whereas as the pH is raised deprotonation of the guest favours the 1:1 complex. Interestingly, for one host–guest pair the energy required to decap the 2:1 capsular complex and form the 1:1 complex is sufficient to shift the pKa of the guest by ~3–4 orders of magnitude (4.1–5.4 kcal mol−1). The two largest guests examined form stable 2:1 capsules, with in both cases the guest adopting a relatively high energy J-shaped motif. Furthermore, these 2:1 complexes are sufficiently stable that at high pH guest deprotonation occurs without decapping of the capsule.
Anion binding by fluorescent Fmoc-protected amino acids
Creators: name: Farrell, David P.
name: Sargent, Andrew L.
name: Allen, William E.
Publisher: name: Taylor & Francis
Year: 2015
Subjects: Biological Sciences
Chemistry
Biotechnology
Molecular Biology
Physics
Biochemistry
Biophysics

description: Two non-natural amino acids with fluorescent urea side-chains were prepared from Fmoc-protected aspartic and glutamic acids. In acetonitrile solution, the emission of the Asp derivative is strongly quenched by HCO3−  or H2PO4−  (K ≥ 104 M− 1) but not by less-basic Cl−  or NO3− . Solutions containing excess bicarbonate ion appear peach-colored, with λabs at 394 and 495 nm ascribed to the anion complex and urea-deprotonated sensor, respectively. Corresponding fluorescence bands are observed at 475 and 579 nm. Dihydrogenphosphate is not sufficiently basic to remove H+ from the ground state of the fluorophore. However, deprotonation of the excited state occurs in the presence of>1 equiv of H2PO4−  (λem = 578 nm). According to 1H NMR in DMSO-d6, recognition of H2PO4−  occurs at the urea N–H groups and the amino acid backbone N–H. DFT techniques further predict that the backbone C = O group accepts an H-bond from the anion. The Glu derivative has lower affinity for anions; the additional CH2 group in its side-chain apparently sets the backbone N–H and C = O too far from the urea to contribute significantly to binding. To demonstrate suitability for standard Fmoc-based solid-phase peptide synthesis, the Asp derivative was incorporated into a 12-residue peptide.
Coexistence of interacting charge density waves in a layered semiconductor
Creators: name: Lv, B. Q.
name: Zong, Alfred
name: Wu, Dong
name: Nie, Zhengwei
name: Su, Yifan
name: Choi, Dongsung
name: Ilyas, Batyr
name: Fichera, Bryan T.
name: Li, Jiarui
name: Baldini, Edoardo
name: Mogi, Masataka
name: Huang, Y. -B.
name: Po, Hoi Chun
name: Meng, Sheng
name: Wang, Yao
name: Wang, N. L.
name: Gedik, Nuh
Publisher: name: arXiv
Year: 2024
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Coexisting orders are key features of strongly correlated materials and underlie many intriguing phenomena from unconventional superconductivity to topological orders. Here, we report the coexistence of two interacting charge-density-wave (CDW) orders in EuTe4, a layered crystal that has drawn considerable attention owing to its anomalous thermal hysteresis and a semiconducting CDW state despite the absence of perfect FS nesting. By accessing unoccupied conduction bands with time- and angle-resolved photoemission measurements, we find that mono- and bi-layers of Te in the unit cell host different CDWs that are associated with distinct energy gaps. The two gaps display dichotomous evolutions following photoexcitation, where the larger bilayer CDW gap exhibits less renormalization and faster recovery. Surprisingly, the CDW in the Te monolayer displays an additional momentum-dependent gap renormalization that cannot be captured by density-functional theory calculations. This phenomenon is attributed to interlayer interactions between the two CDW orders, which account for the semiconducting nature of the equilibrium state. Our findings not only offer microscopic insights into the correlated ground state of EuTe4 but also provide a general non-equilibrium approach to understand coexisting, layer-dependent orders in a complex system.
description: To appear in PRL
Dimetallic functionalities in liposome bilayers
Creators: name: S. Svane
name: J. Kuntsche
name: F. Steiniger
name: A. Eich
name: L. Duelund
name: V. McKee
name: C.J. McKenzie
Publisher: name: Taylor & Francis
Year: 2015
Subjects: subject: Biological Sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: Chemistry
subject: Earth and Environmental Sciences
subject: Biotechnology
subject: Cell Biology
subject: Physics
subject: Biochemistry
subject: Biophysics

description: A dicopper(II) complex can be covalently linked to palmitate/palmitoyl-oleoyl-phosphatidylcholine (PA/POPC) liposomes using the following one-pot strategy: preformed [Cu2(bpbp)(PA)](ClO4)2 (bpbp−  = 2,6-bis((N,N′-bis(2-picolyl)amino)methyl)-4-tertbutylphenolato) was incorporated into POPC liposomes with a loading of up to 10 mol%. Despite its shape and charge, the decoration of PA/POPC liposomes with {Cu2(bpbp)}3+ did not disrupt the liposome structure; however, the mean liposome diameter increased from about 130 nm (0 mol% dicopper complex) to about 150 nm (10 mol% dicopper complex). Single-crystal X-ray structures furnish ‘snapshots’ of the pH-dependent solution state derivatives of {Cu2(bpbp)}3+, and model the structure of the [Cu2(bpbp)(PA)]2+ head group at the surface of the liposomes. An impressive plasticity in the intramolecular non-bonded Cu….Cu distance for these ions, ranging from 3 to 4 Å, in [Cu2(bpbp)OH]2+, [Cu2(bpbp)(OAc)(H2O)]2+ and [Cu2(bpbp)(H2O)2]3+ allows for their utility as labile reagents in water. Remarkably, the flexible dicopper site is selective for a single carboxylate ligand, so that [Cu2(bpbp)(PA)]2+ is favoured even in the presence of other chemically similar oxoanions, such as CO32 − , HCO3− , NO3− , ClO4− , ReO4−  and CF3SO3− .
Culture and management techniques of Vietnamese Koi
Creators: name: Al-Asif, Abdulla
Publisher: name: figshare
Year: 2022
Subjects: subject: 70401 Aquaculture
subject: FOS: Agriculture, forestry and fisheries
subject: 70402 Aquatic Ecosystem Studies and Stock Assessment
subject: 70299 Animal Production not elsewhere classified
subject: FOS: Animal and dairy science
subject: 60803 Animal Developmental and Reproductive Biology
subject: FOS: Biological sciences
subject: 70201 Animal Breeding
subject: 70403 Fisheries Management
subject: 70499 Fisheries Sciences not elsewhere classified

description: The first time study approach about culture and management in Bangladesh was conducted to observe the induce breeding, nursing and rearing technique of Vietnam koi (Anabas testudineus) fish culture in fresh water farm in Mymensingh region, Bangladesh for a period of 120 days from May, 2013 to August, 2013. In this study, inducing agent PG was used to achieve fertilization and hatching success of climbing perch, Anabas testudineus. During induce breeding, male and female in a ratio of 1:1 were used. The females were given single injection of 6-8 mg PG/kg body weight and the males were given 2-3 mg PG/kg body weight and nursing and rearing of vietnam koi (Anabas testudineus) fish were carried out as monoculture in earthen ponds. In this study, two earthen ponds of 20 decimal with an average depth of 2.5 to 3 feet and two earthen ponds of 50 decimal with an average depth of 3 to 5 feet were used for nursing and rearing of Vietnam koi respectively. Nursing and rearing of Vietnam koi (Anabas testudinus) were carried out as monoculture in earthen ponds. The water temperature in the culture pond was ranged from 31.29±0.85 to 35.5±0.58 0 C during nursing and rearing. The value of Dissolve Oxygen (DO) and pH was ranged from 6.20±0.41 to 5.0±0.71 mg/l and 7.8±0.62 to 7.1±0.47 respectively. The average weight of the fingerlings during stocking was 0.8g in nursery stage and 20g in rearing stage. Fingerlings were stocked at 1750 fish /decimal in the rearing pond. Fry in the nursing ponds were fed with Hatchery feed (powder) at the rate of 40-50% of their total body weight. Fingerlings in the rearing ponds were fed with Koi Starter and Koi Grower feed at the rate of 15-20% of their total body weight. The final average weight (g) of Vietnam koi was (0.8±0.08)g in nursery stage & (200.0±0.82)g in rearing stage. The Feed Conversion Ratio (FCR) of total artificial feed was 1.63. The survival rate of Vietnam koi fish was 70% and the net production was 167kg/decimal. The total benefit was 5,48,455.00 BDT. Benefit-cost ratio of this study was 1.43. Therefore, it could be concluded that nursing and rearing of Vietnam koi (Anabas testudineus) by using artificial feed under a monoculture system in the earthen ponds is potentially and economically feasible.
Tadeusza Kowalskiego niepublikowany reportaż z podróży po Deli Orman (1929 r.)
Creators: name: Stachowski, Kamil
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 470499
subject: Linguistics not elsewhere classified

description: Niniejszy artykuł jest edycją reportażu Tadeusza Kowalskiego z jego podróży do północno-wschodniej Bułgarii w 1929 r. Większa część tekstu została przygotowana na czysto przez samego Kowalskiego, jak gdyby z zamiarem publika-cji, jednak praca pozostała niedokończona i, o ile mi wiadomo, niewydana. Reportaż zawiera wielką ilość szczegółów etnograficznych i językoznawczych, jednak ogólnie ma charakter bardziej literacki niż naukowy.The present paper is an edition of Tadeusz Kowalski’s report from his trip to north-eastern Bulgaria in 1929. Most of the text was prepared by Kowalski himself, as if with the intent of publication, but the work remained unfinished and, to the best of my knowledge, unpublished. The report contains a multitude of ethnographic and linguistic detail, though its overall character is more literary than scientific.
A benzothiazole-based receptor-immobilised silica nanoparticle as chemosensor for Hg2+
Creators: name: Lee, Jin Hyeok
name: Lee, Ji Ha
name: Kim, Sung Kuk
name: Jung, Jong Hwa
Publisher: name: Taylor & Francis
Year: 2015
Subjects: Science Policy
Biological Sciences
Astronomy, Astrophysics, Space Science
Chemistry
Earth and Environmental Sciences
Engineering

description: Fluorogenic benzothiazole-based receptor has been easily immobilised onto filter paper and silica nanoparticle by sol-gel reaction. The sensing ability of the benzothiazole-immobilised thin layer filter paper chromatography (TLC-1) was evaluated on the basis of fluorescent changes caused by metal ions that were dropped onto the TLC plate. The TLC-1 exhibited a high affinity and selectivity for Hg2+ over other competing metal ions. Therefore, the TLC-1 holds promise as a portable sensor for the detection of Hg2+ in aqueous solution. Furthermore, the adsorption capacity of a column packed with SiO2-1 was evaluated by the application of metal ions under various experimental conditions, such as pH, flow rate and concentration. The SiO2-1 column removed 98% of Hg2+ from drinking water containing 10 ppb of Hg2+. The adsorption capacity of the SiO2-1 column was not strongly affected by pH and flow rates.
Proximate composition of fish feed ingredients available in Shibpur Upazila, Narsingdi district, Bangladesh
Creators: name: Al-Asif, Abdulla
Publisher: name: figshare
Year: 2022
Subjects: subject: 70406 Post-Harvest Fisheries Technologies (incl. Transportation)
subject: FOS: Agriculture, forestry and fisheries
subject: 70403 Fisheries Management
subject: 70499 Fisheries Sciences not elsewhere classified

description: The present study was conducted to determine the proximate composition of fish feed ingredients locally available in Narsingdi Region. In this study protein, lipid, moisture, ash, carbohydrate concentrations was assessed in rice bran, maize bran, wheat bran, mustard oil cake, soybean meal, DORB, meat and bone meal, mixed of oyster, shrimp shell and crab shell. Proximate composition was determined on the homogenous basis. The quantity of protein in different fish feed ingredients ranged from (12.04±1.30-47.23±0.61)%. Maximum amount of protein content (47.23±0.61)% was recorded from the meat and bone meal and minimum amount (12.04±1.30)% was recorded from the maize bran. The concentration of lipid in different feed stuffs ranged from (2.5±0.37-18.5±1.1)%. The highest value (18.5±1.1)% of lipid content was found in soybean meal and the minimum (2.5±0.37)% was recorded in Crab shell. Moreover, the value of moisture and ash were recorded (5.00±0.88-13.28±1.46)% and (7.43±0.12-22.55±1.32)% in the locally found feed respectively. The highest value of moisture (13.28±1.46)% was recorded from crab shell and the lowest value of moisture (5.00±0.88)% was recorded from meat and bone meal. The highest amount of ash (22.55±1.32)% was also found in meat and bone meal and the lowest amount of ash (7.43±0.12)% was found in maize bran. And finally last the concentration of carbohydrate in different feed stuffs ranged from (15.67±0.5-66.77±1.13)%. Maximum amount of carbohydrate content (66.77±1.13)% was recorded from the maize bran and minimum amount of carbohydrate content (15.67±0.5)% was recorded from the soybean meal.
Lower rim amide (1,3) functionalised calix[4]arene amido-thiourea derivatives as dimetallic Zn(II) coordination complexes for anion recognition/sensing
Creators: name: Solis, Stefano De
name: Elisei, Fausto
name: Thorfinnur Gunnlaugsson
Publisher: name: Taylor & Francis
Year: 2015
Subjects: subject: Biological Sciences
subject: Ecology
subject: FOS: Biological sciences
subject: Chemistry
subject: Neuroscience
subject: Molecular Biology
subject: Engineering
subject: Biochemistry

description: The synthesis of two amido-thiourea based receptors/sensors 1 and 2, formed by functionalisation of the lower rim of a calix[4]arene, and the photophysical analysis of these with Zn(II) and various anions is described. The two structures, differing by the substituent on the thiourea moiety, were found to bind Zn(II) effectively in ethanol (EtOH); the recognition giving rise to significant changes in the UV-vis absorption spectra, which was red-shifted for both chemosensors. The changes in the absorption spectra were further analysed using nonlinear regression analysis programme (using the global analysis software ReactLab™ Equilibria), which revealed high binding constants for both systems. The resulting dimetallic complexes (1,2)–Zn2 were (pre-formed and) then used to coordinate anionic species such as AcO− , H2PO4−  and Br−  through electrostatic interactions, showing high affinity towards these anions. In all cases, nonlinear regression analysis showed both 1:1 or 1:2 sensor:anion depending on the anion used. Although the 2-Zn2 complex showed high affinity for acetate, phosphate and bromide, the 1-Zn2 complex showed selectivity towards the recognition of phosphate in EtOH.
ITC and NMR analysis of the encapsulation of fatty acids within a water-soluble cavitand and its dimeric capsule
Creators: name: Wang, Kaiya
name: Punidha Sokkalingam
name: Gibb, Bruce C.
Publisher: name: Taylor & Francis
Year: 2015
Subjects: Cancer
Chemistry
Biochemistry
Biophysics

description: We report here NMR and Isothermal Titration Calorimetry studies of the binding of ionisable guests (carboxylate acids) to a deep-cavity cavitand. These studies reveal that the shortest guests favoured 1:1 complex formation, but the longer the alkyl chain the more the 2:1 host-guest capsule is favoured. For intermediate-sized guests, the equilibrium between these two states is controlled by pH; at low values the capsule containing the carboxylic acid guest is favoured, whereas as the pH is raised deprotonation of the guest favours the 1:1 complex. Interestingly, for one host–guest pair the energy required to decap the 2:1 capsular complex and form the 1:1 complex is sufficient to shift the pKa of the guest by ~3–4 orders of magnitude (4.1–5.4 kcal mol−1). The two largest guests examined form stable 2:1 capsules, with in both cases the guest adopting a relatively high energy J-shaped motif. Furthermore, these 2:1 complexes are sufficiently stable that at high pH guest deprotonation occurs without decapping of the capsule.
Availability of fish species in fish markets and fish marketing in Noakhali district, Bangladesh
Creators: name: Al-Asif, Abdulla
Publisher: name: figshare
Year: 2022
Subjects: subject: 60203 Ecological Physiology
subject: FOS: Biological sciences
subject: 60411 Population, Ecological and Evolutionary Genetics
subject: 50199 Ecological Applications not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 50101 Ecological Impacts of Climate Change
subject: 60202 Community Ecology (excl. Invasive Species Ecology)
subject: 60205 Marine and Estuarine Ecology (incl. Marine Ichthyology)
subject: 60204 Freshwater Ecology
subject: Ecology
subject: 60299 Ecology not elsewhere classified
subject: 50103 Invasive Species Ecology
subject: 60302 Biogeography and Phylogeography

description: The present study was conducted to know the fish markets and marketing practices in Noakhali district for a period of 5 months; November 2014 to March, 2015. Five types of marketing channels were found in this study and most were similar in nature as marketing places were in same town and not far apart. The average cost by a retailer to trade fish was estimated at Tk. 171.6 /day. This cost included rent of trading spot, ice and local transportation. The average income of retailers in three markets was estimated at Tk. 640/day/retailer. It was found that 21% of fish supplied in the markets were carps (Indian and Exotic), 17.3% marine fish, 15.7% hilsa, 12.7% catfish, 11.3% small fish, 11% Tilapia and pungus, 7% others mix species and 4% prawn. It was reported that availability fish species in three different markets round the year ranged from 55 to 72. However, during the study period, a total of 39 fish species under 24 families were found in three markets. It was found that marine fish comprises average 33% and freshwater fish comprises average 67% in the three markets. The price of fish depends on market structure, species quality, size, weight and season. The price of galda and bagda were varied from 580±10 to 560±8 Tk. /kg, and 370±10 to 350±5 Tk. /kg respectively. The price of catla, tilapia, ilish, Thai pangus and silver carp were varied from 390±10 to 360±8 Tk. /kg, 165±5 to 150±8 Tk. /kg, 900±10 to 860±5 Tk. /kg, 140±10 to 125±5 Tk. /kg, and 160±8 to 155±5 Tk./kg, respectively. In Noakhali, around 50-180 retailers were involved in each market. It was found that the daily supply of fish in Municipal market, Datter hat and Sonapur was about 12-13, 7-8 and 2.5-3ton, respectively. Inadequate infrastructure, transportation, shortage of ice in peak season, hygienic condition and packaging facilities were cited as main constraints. It was found that 80% of the fish retailers have improved their livelihood status through fish trading to a certain degree.
Pb, Sr and Ba calix[6]arene hexacarboxylic acid octahedral complexation: a dramatic effect of dealkylation
Creators: name: Birendra Babu Adhikari
name: Schramm, Michael P.
name: Cuong-Alexander To
name: Iwasawa, Tetsuo
Publisher: name: Taylor & Francis
Year: 2015
Subjects: subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Biological Sciences
subject: Chemistry
subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Biochemistry
subject: Biophysics

description: Calix[6]arene hexacarboxylic acid binds instantly and with low symmetry to Pb, Sr and Ba. Later a highly symmetric up-down alternating conformation emerges. The solution structures are identical to their p-tert-butylcalix[6]arene hexacarboxylic acid counterparts. With either receptor, an octahedral cage is formed around the metal. The transformation from low to high symmetry however proceeds at significantly faster rates for the de-t-butylated host.