1,870 research outputs found
Graphene quantum dots with covalently bonded gold nanoparticles winning the battle against methicillin-resistant Staphylococcus aureus under blue light
No full textOver the last decades, bacterial resistance has become one of the emerging health threats. Particularly dangerous are bacterial strains resistant to various antibacterial drugs. Herein, we modified graphene quantum dots (GQDs) to produce efficient photo-induced antibacterial agents. GQDs were modified with (a) ethylene-diamine (EDA), (b) with EDA and gold nanoparticles (AuNPs), and (c) 3-amino-1,2,4-triazole (TA) using carbodiimide coupling. Photo-induced antibacterial activity of modified GQDs was tested against 8 bacterial strains. Treatment with modified GQDs and blue light (wavelength of 470 nm) resulted in remarkable antibacterial activity with minimal inhibitory concentrations (MIC) of 7.81 mu g mL(-1) for K. pneumoniae and S. aureus and 3.9 mu g mL(-1) against MRSA and E. faecalis. Planar organization of GQDs functionalized with AuNPs allowed direct access of molecular oxygen to AuNPs leading to more efficient O-1(2) production as well as the O-1(2) production from excited GQDs. Thus, GQDs functionalized with AuNPs showed outstanding efficiency in the battle against several bacterial strains, particularly those that lead to nosocomial infections
Mihkatu l-’anwar
No full textOriginal paper and leather covers, linen binding; Neskhi script, black ink; titles of chapters, certain quotations and marks in the text noted with red ink; text within a thin red frame; beginning of the text decorated with a triple frame, colours: golden, black and blue; unwan with the title on golden background with a floral ornament, colours: blue, golden, black, red, pink and violet; original foliation with Arabic ciphers in the upper left corner of the a page, black ink: 3-302; marginal notes, ink: black and red.Originalne korice od slepljenih listova hartije, potpuno prevucene koom. Platneni povez. Neshi. Tekst rukopisa pisan je crnim tuem. Naslovi poglavlja, pojedini navodi i oznake u tekstu zapisani su crvenim mastilom. Beleke na marginama crnim i crvenim mastilom. Tekst je uokviren tankim ramom crvene boje. Prva strana rukopisa posebno je uokvirena trostrukim ramom u zlatnoj, crnoj i plavoj boji. Unvan s naslovom dela na zlatnoj podlozi i sa stilizovanim ornamentom cvetnog motiva u plavoj, zlatnoj, crnoj, crvenoj, ruicastoj i ljubicastoj boji. Originalna numeracija listova u gornjem levom uglu strane "a".U uvodu u prevod dela Mikat al-Anvar, koji je objavilo Kraljevsko azijsko drutvo u Londonu 1924. Vilijam Henri Templ Gerdner veli sledece: "Mikat al-Anvar [Nia za svetla] je delo od izuzetnog znacaja u ogledu Gazalijevog unutarnjeg ivota i ezoterijske misli. Zapaanja koja o takvom ivotu i misli prua su izvanredno, moda jedinstveno, intimna. Ovo delo pocinje tamo gde se njegovo autobiografsko Al-Munkid min ad-dalal [Izbavitelj od greha] zaustavlja. Od samog pocetka, njegova ezoterija je pobudila znatielju i cak sumnju muslimanskih mislilaca i raspolaemo veoma zanimljivim aluzijama na to kod Ibn Tufajla i Ibn Ruda, proslavljenih filozofa na zapadu islamskog sveta, koji su uivali u popularnosti citav vek posle Gazalijeve smrti 1111. (505. A.H) - to je cinjenica koja, opet, povecava njen znacaj i nae zanimanje za nju."In his Introduction to the translation of Mishkat al-Anwar, published by Royal Asiatic Society, London, 1924, William Henry Temple Gairdner says: "The Mishkat al-Anwar [The Niche for Lights] is a work of extreme interest from the viewpoint of al-Ghazzali`sinner life and esoteric thought. The glimpses it gives of that life and thought are remarkably, perhaps uniquely, intimate. It begins where his autobiographical Al-Munqidh min ad-Dalâl[The Rescuer from theSins] leaves off. Its esotericism excited the curiosity and even the suspicion of Muslim thinkers from the first, and we have deeply interesting allusions to it in Ibn Tufail and Ibn Rushd, the celebrated philosophers of Western Islam, who flourished within the century after al-Ghazzali`sdeath in 1111 (A.H. 505) - a fact which, again, increases its importance and interest for us."Donated by Aram Calikjan, a dentist from Belgrade, January 1951.Rukopis je, januar 1951. godine, poklonio Aram Calikjan, zubar iz Beograda
Mihkatu l-’anwar
No full textOriginal paper and leather covers, linen binding; Neskhi script, black ink; titles of chapters, certain quotations and marks in the text noted with red ink; text within a thin red frame; beginning of the text decorated with a triple frame, colours: golden, black and blue; unwan with the title on golden background with a floral ornament, colours: blue, golden, black, red, pink and violet; original foliation with Arabic ciphers in the upper left corner of the a page, black ink: 3-302; marginal notes, ink: black and red.Originalne korice od slepljenih listova hartije, potpuno prevucene koom. Platneni povez. Neshi. Tekst rukopisa pisan je crnim tuem. Naslovi poglavlja, pojedini navodi i oznake u tekstu zapisani su crvenim mastilom. Beleke na marginama crnim i crvenim mastilom. Tekst je uokviren tankim ramom crvene boje. Prva strana rukopisa posebno je uokvirena trostrukim ramom u zlatnoj, crnoj i plavoj boji. Unvan s naslovom dela na zlatnoj podlozi i sa stilizovanim ornamentom cvetnog motiva u plavoj, zlatnoj, crnoj, crvenoj, ruicastoj i ljubicastoj boji. Originalna numeracija listova u gornjem levom uglu strane "a".U uvodu u prevod dela Mikat al-Anvar, koji je objavilo Kraljevsko azijsko drutvo u Londonu 1924. Vilijam Henri Templ Gerdner veli sledece: "Mikat al-Anvar [Nia za svetla] je delo od izuzetnog znacaja u ogledu Gazalijevog unutarnjeg ivota i ezoterijske misli. Zapaanja koja o takvom ivotu i misli prua su izvanredno, moda jedinstveno, intimna. Ovo delo pocinje tamo gde se njegovo autobiografsko Al-Munkid min ad-dalal [Izbavitelj od greha] zaustavlja. Od samog pocetka, njegova ezoterija je pobudila znatielju i cak sumnju muslimanskih mislilaca i raspolaemo veoma zanimljivim aluzijama na to kod Ibn Tufajla i Ibn Ruda, proslavljenih filozofa na zapadu islamskog sveta, koji su uivali u popularnosti citav vek posle Gazalijeve smrti 1111. (505. A.H) - to je cinjenica koja, opet, povecava njen znacaj i nae zanimanje za nju."In his Introduction to the translation of Mishkat al-Anwar, published by Royal Asiatic Society, London, 1924, William Henry Temple Gairdner says: "The Mishkat al-Anwar [The Niche for Lights] is a work of extreme interest from the viewpoint of al-Ghazzali`sinner life and esoteric thought. The glimpses it gives of that life and thought are remarkably, perhaps uniquely, intimate. It begins where his autobiographical Al-Munqidh min ad-Dalâl[The Rescuer from theSins] leaves off. Its esotericism excited the curiosity and even the suspicion of Muslim thinkers from the first, and we have deeply interesting allusions to it in Ibn Tufail and Ibn Rushd, the celebrated philosophers of Western Islam, who flourished within the century after al-Ghazzali`sdeath in 1111 (A.H. 505) - a fact which, again, increases its importance and interest for us."Donated by Aram Calikjan, a dentist from Belgrade, January 1951.Rukopis je, januar 1951. godine, poklonio Aram Calikjan, zubar iz Beograda
Fully Automated Electrically Controlled Tunable Broadband Interferometric Dielectric Spectroscopy for Aqueous Solutions
No full textsponsorship: Manuscript received May 16, 2021; accepted June 22, 2021. This work was supported in part by KU Leuven Internal Funding (C2 project mu 2BIO) and in part by the Flemish Hercules. The work of Meng Zhang was supported by the Scholarship provided by the Chinese Scholarship Council. (Corresponding author: Xiue Bao.) (KU Leuven Internal Fund, Flemish Hercules, Chinese Scholarship Council)status: Publishe
Convex regions in the plane and their domes
No full textWe make a detailed study of the relation of a euclidean convex region to . The dome is the relative boundary, in the upper halfspace model of hyperbolic space, of the hyperbolic convex hull of the complement of . The first result is to prove that the nearest point retraction is 2-quasiconformal. The second is to establish precise estimates of the distortion of near
Dynamic Conflict-Free Colorings in the Plane
No full textWe study dynamic conflict-free colorings in the plane, where the goal is to maintain a conflict-free coloring (CF-coloring for short) under insertions and deletions.
- First we consider CF-colorings of a set S of unit squares with respect to points. Our method maintains a CF-coloring that uses O(log n) colors at any time, where n is the current number of squares in S, at the cost of only O(log n) recolorings per insertion or deletion We generalize the method to rectangles whose sides have lengths in the range [1, c], where c is a fixed constant. Here the number of used colors becomes O(log^2 n). The method also extends to arbitrary rectangles whose coordinates come from a fixed universe of size N, yielding O(log^2 N log^2 n) colors. The number of recolorings for both methods stays in O(log n).
- We then present a general framework to maintain a CF-coloring under insertions for sets of objects that admit a unimax coloring with a small number of colors in the static case. As an application we show how to maintain a CF-coloring with O(log^3 n) colors for disks (or other objects with linear union complexity) with respect to points at the cost of O(log n) recolorings per insertion. We extend the framework to the fully-dynamic case when the static unimax coloring admits weak deletions. As an application we show how to maintain a CF-coloring with O(sqrt(n) log^2 n) colors for points with respect to rectangles, at the cost of O(log n) recolorings per insertion and O(1) recolorings per deletion.
These are the first results on fully-dynamic CF-colorings in the plane, and the first results for semi-dynamic CF-colorings for non-congruent objects
Neizrecivo veliko i male priče. Očuđeni mit u suvremenom hrvatskom romanu
No full textU članku se raspravlja o traumatskoj strukturi (post)modernosti, te se i »kraj velikih priča« i »narativni obrat«, kao dvije naizgled suprotne dijagnoze postmodernog stanja, tumače kroz psihoanalitičke pojmove nedokučivosti Realnog, povlačenja Simboličkog i prevlasti Imaginarnog. U suvremenoj se književnosti vide dva temeljna načina odnošenja prema neizrecivom: prvi je sakralizacija tišine integralnog svjedoka, a drugi fetišiziranje traume u žanrovskoj literaturi koja pripovijedajući o izmišljenim užasima besciljno kruži oko traumatskog srca zbilje. Zatim se, tragom talijanskog mitologa Furia Jesia, pokušava naći treći put, put koji ne odustaje ni od pogleda u traumu ni od pripovijedanja, već proizvodi novi oblik osviještenog i očuđenog, te politički odgovornog mita. Takav se pristup mitu i tragediji oprimjeruje romanom Elijahova stolica Igora Štiksa u kojem se odnos Europe prema opkoljenom Sarajevu prikazuje kroz mit o Edipu i kritiku europske dijalektike prosvjetiteljstva. Slijedom toga primjera, nova se uloga priče u suvremenoj prozi vidi kao osviještavanje mita i otvaranje mogućnosti za djelovanje
Crystal structure of a hypoallergenic isoform of the major birch pollen allergen Bet v 1 and its biological function
No full textHarmonic diffeomorphisms of noncompact surfaces and Teichmüller spaces
No full textLet g : M -> N be a quasiconformal harmonic diffeomorphism between noncompact Riemann surfaces M and N. In this paper we study the relation between the map g and the complex structures given on M and N. In the case when M and N are of finite analytic type we derive a precise estimate which relates the map g and the Teichmüller distance between complex structures given on M and N. As a corollary we derive a result that every two quasiconformally related finitely generated Kleinian groups are also related by a harmonic diffeomorphism. In addition, we study the question of whether every quasisymmetric selfmap of the unit circle has a quasiconformal harmonic extension to the unit disk. We give a partial answer to this problem. We show the existence of the harmonic quasiconformal extensions for a large class of quasisymmetric maps. In particular it is proved that all symmetric selfmaps of the unit circle have a unique quasiconformal harmonic extension to the unit disk
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