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Article ; Online: Alternate monolayers of CdSe nanocrystals and perylene tetracarboxylate: quantum dot hypersensitization for dye-sensitized solar cells.

Vercelli, B / Zotti, G / Berlin, A

ACS applied materials & interfaces

2012 Volume 4, Issue 6, Page(s) 3233–3238

Abstract: Mono- and multilayers from CdSe nanocrystal dispersion and perylene tetracarboxylate solution are reported for the first time. The layers were investigated by UV-visible spectroscopy, cyclic voltammetry, photoconductivity, and photoelectrochemical ... ...

Abstract	Mono- and multilayers from CdSe nanocrystal dispersion and perylene tetracarboxylate solution are reported for the first time. The layers were investigated by UV-visible spectroscopy, cyclic voltammetry, photoconductivity, and photoelectrochemical techniques. The n-type organic semiconductor gives enhanced photoconductivity to the CdSe-NC multilayer structure. The photoactive perylene monolayer acts also as hypersensitizer of CdSe-NC structures. The perylene-modified CdSe-NC monolayer on indium tin oxide (ITO) electrode in a three-electrode photoelectrochemical cell upon illumination in the presence of oxygen generates an intense steady photocurrent as high as 10-20 times that expected from the individual contributions of perylene and CdSe-NCs. The hypersensitization mechanism is discussed on the basis of the energy level diagram of the components.
MeSH term(s)	Cadmium Compounds/chemistry ; Coloring Agents/chemistry ; Electrodes ; Metal Nanoparticles/chemistry ; Perylene/chemistry ; Selenium Compounds/chemistry ; Solar Energy ; Tin Compounds/chemistry
Chemical Substances	Cadmium Compounds ; Coloring Agents ; Selenium Compounds ; Tin Compounds ; Perylene (5QD5427UN7) ; indium tin oxide (71243-84-0) ; cadmium selenide (A7F646JC5C)
Language	English
Publishing date	2012-06-27
Publishing country	United States
Document type	Journal Article
ISSN	1944-8252
ISSN (online)	1944-8252
DOI	10.1021/am300590a
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article: Multilayers of Carbodithioate and Sulfide-Linked CdSe Nanocrystals: Progressive Increase of Exciton Delocalization

Vercelli, B / Virgili, T / Pasini, M / Berlin, A / Zotti, G

Journal of physical chemistry. 2019 Aug. 20, v. 123, no. 37

2019

Abstract: Multilayers of sulfur-based anchoring group linkers and CdSe nanocrystals (NCs) were realized on indium-tin oxide substrate via layer-by-layer alternation. The materials were investigated by UV–vis and Fourier transform infrared spectroscopy, ... ...

Abstract	Multilayers of sulfur-based anchoring group linkers and CdSe nanocrystals (NCs) were realized on indium-tin oxide substrate via layer-by-layer alternation. The materials were investigated by UV–vis and Fourier transform infrared spectroscopy, photoluminescence, and photoconductivity. We found that the change of NC packing during multilayer build-up produces a progressive increase of exciton delocalization. In fact during multilayer deposition, the first excitonic peak of NCs shifts progressively toward longer wavelengths. We found a linear relation between the optical band gap shift (ΔEgₙ) and the inverse of the number of CdSe-NC layers (n) for n > 2, in particular, the decrease of its value for the infinite multilayer from one of the solution (2.10 eV) goes from 18 meV for the 1,2-ethylene-bis(dithiocarbamate) linker to 66 meV for sulfide dianions, corresponding to an apparent increase of the exciton radius of 0.20 and 0.85 nm, respectively.
Keywords	Fourier transform infrared spectroscopy ; cadmium ; indium tin oxide ; nanocrystals ; photoluminescence ; physical chemistry ; selenides ; ultraviolet-visible spectroscopy ; wavelengths
Language	English
Dates of publication	2019-0820
Size	p. 23159-23166.
Publishing place	American Chemical Society
Document type	Article
ISSN	1932-7455
DOI	10.1021/acs.jpcc.9b04276
Database	NAL-Catalogue (AGRICOLA)

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Book ; Online: The Simulated Sky

Zotti, Georg / Hoffmann, Susanne M / Wolf, Alexander / Chéreau, Fabien / Chéreau, Guillaume

Stellarium for Cultural Astronomy Research

2021

Abstract: For centuries, the rich nocturnal environment of the starry sky could be modelled only by analogue tools such as paper planispheres, atlases, globes and numerical tables. The immersive sky simulator of the twentieth century, the optomechanical ... ...

Abstract	For centuries, the rich nocturnal environment of the starry sky could be modelled only by analogue tools such as paper planispheres, atlases, globes and numerical tables. The immersive sky simulator of the twentieth century, the optomechanical planetarium, provided new ways for representing and teaching about the sky, but the high construction and running costs meant that they have not become common. However, in recent decades, "desktop planetarium programs" running on personal computers have gained wide attention. Modern incarnations are immensely versatile tools, mostly targeted towards the community of amateur astronomers and for knowledge transfer in transdisciplinary research. Cultural astronomers also value the possibilities they give of simulating the skies of past times or other cultures. With this paper, we provide an extended presentation of the open-source project Stellarium, which in the last few years has been enriched with capabilities for cultural astronomy research not found in similar, commercial alternatives. Comment: https://journal.equinoxpub.com/JSA/issue/view/1762
Keywords	Astrophysics - Instrumentation and Methods for Astrophysics ; Computer Science - Graphics
Publishing date	2021-03-29
Publishing country	us
Document type	Book ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: [The FRASNET study: identification of clinical and social factors of renal failure in an elderly population].

Brioni, Elena / Magnaghi, Cristiano / Villa, Giulia / Giannetta, Noemi / Manara, Duilio F / Magni, Giulia / Delli ZOtti, Giulia / Fontana, Simone / Tunesi, Francesca / Zagato, Laura / Lanzani, Chiara / Manfredi, Angelo / Manunta, Paolo

Giornale italiano di nefrologia : organo ufficiale della Societa italiana di nefrologia

2022 Volume 39, Issue 3

Abstract: Background. ...

Abstract	Background.
MeSH term(s)	Aged ; Cross-Sectional Studies ; Frail Elderly ; Frailty/complications ; Humans ; Kidney Failure, Chronic/complications ; Renal Insufficiency, Chronic/complications ; Renal Insufficiency, Chronic/epidemiology ; Sarcopenia/complications ; Sarcopenia/epidemiology ; Social Factors
Language	Italian
Publishing date	2022-06-20
Publishing country	Italy
Document type	Journal Article ; Observational Study
ZDB-ID	1237110-5
ISSN	1724-5990 ; 0393-5590
ISSN (online)	1724-5990
ISSN	0393-5590
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Article ; Online: [Self-efficacy and self-management in patients in hemodialysis: a narrative review of multidisciplinary theories].

Brioni, Elena / Delli Zotti, Giulia / Apuzzo, Luigi / Magnaghi, Cristiano / Iodice, Maddalena / Burrai, Francesco / Manunta, Paolo / Vezzoli, Giuseppe / Manara, Duilio Fiorenzo / Villa, Giulia

Giornale italiano di nefrologia : organo ufficiale della Societa italiana di nefrologia

2021 Volume 38, Issue 3

Abstract: Hemodialysis is the most common treatment in patients with end-stage chronic kidney disease and the wide accessibility of this therapy has prolonged the patients' lifespan. However, it involves alterations in their emotional sphere and, often, a ... ...

Abstract	Hemodialysis is the most common treatment in patients with end-stage chronic kidney disease and the wide accessibility of this therapy has prolonged the patients' lifespan. However, it involves alterations in their emotional sphere and, often, a reduction in therapeutic compliance as the chronicity of kidney disease requires lifestyle changes difficult to maintain in the long term. The management of a chronic medical condition is in fact a complex process that necessarily requires multidisciplinary action. The concepts of "Self-efficacy" and "Self-management" fall within the Self-Determination Theory and are relevant in this context because they refer to the beliefs that everyone has about their abilities to control behavior and determine the success in adhering to prescribed therapies. Furthermore, the promotion of self-efficacy and self-management through an educational approach that makes use of so-called "eHealth" tools can help develop greater self-awareness in dialysis patient, a better control over their care choices and an increased adherence to therapeutic-dietary indications. This article aims at highlighting the importance of implementing an approach based on eHealth in the management of hemodialysis patients. It also wants to raise awareness of the related multidisciplinary theories to be applied in this clinical context to promote greater therapeutic adherence, and therefore a better quality of life and care.
MeSH term(s)	Humans ; Kidney Failure, Chronic/therapy ; Quality of Life ; Renal Dialysis ; Self Efficacy ; Self-Management
Language	Italian
Publishing date	2021-06-24
Publishing country	Italy
Document type	Journal Article ; Review
ZDB-ID	1237110-5
ISSN	1724-5990 ; 0393-5590
ISSN (online)	1724-5990
ISSN	0393-5590
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Article: Alternate Monolayers of CdSe Nanocrystals and Perylene Tetracarboxylate: Quantum Dot Hypersensitization for Dye-Sensitized Solar Cells

Vercelli, B / Berlin, A / Zotti, G

ACS Applied Materials & Interfaces. 2012 June 27, v. 4, no. 6

2012

Abstract: Mono- and multilayers from CdSe nanocrystal dispersion and perylene tetracarboxylate solution are reported for the first time. The layers were investigated by UV–visible spectroscopy, cyclic voltammetry, photoconductivity, and photoelectrochemical ... ...

Abstract	Mono- and multilayers from CdSe nanocrystal dispersion and perylene tetracarboxylate solution are reported for the first time. The layers were investigated by UV–visible spectroscopy, cyclic voltammetry, photoconductivity, and photoelectrochemical techniques. The n-type organic semiconductor gives enhanced photoconductivity to the CdSe-NC multilayer structure. The photoactive perylene monolayer acts also as hypersensitizer of CdSe-NC structures. The perylene-modified CdSe-NC monolayer on indium tin oxide (ITO) electrode in a three-electrode photoelectrochemical cell upon illumination in the presence of oxygen generates an intense steady photocurrent as high as 10–20 times that expected from the individual contributions of perylene and CdSe-NCs. The hypersensitization mechanism is discussed on the basis of the energy level diagram of the components.
Keywords	electrodes ; energy ; indium tin oxide ; lighting ; nanocrystals ; oxygen ; photovoltaic cells ; quantum dots ; semiconductors ; ultraviolet-visible spectroscopy
Language	English
Dates of publication	2012-0627
Size	p. 3233-3238.
Publishing place	American Chemical Society
Document type	Article
ISSN	1944-8252
DOI	10.1021%2Fam300590a
Database	NAL-Catalogue (AGRICOLA)

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Article: PD-L1 Overexpression in the Lungs of Subjects Who Died from COVID-19: Are We on the Way to Understanding the Immune System Exhaustion Induced by SARS-CoV-2?

Critical reviews in eukaryotic gene expression

2022 Volume 32, Issue 3, Page(s) 9–20

Abstract: Knowledge of the pathogenic mechanisms of severe acute respiratory syndrome-associated coronavirus 2 (SARS-CoV-2) is certainly a priority for the scientific community. Two main elements are involved in the biology of the most severe forms of coronavirus ... ...

Abstract	Knowledge of the pathogenic mechanisms of severe acute respiratory syndrome-associated coronavirus 2 (SARS-CoV-2) is certainly a priority for the scientific community. Two main elements are involved in the biology of the most severe forms of coronavirus disease 2019 (COVID-19): the direct cytopathic effect of the virus against the host tissues, and a dysfunction of the immune system, characterized by the exhaustion of T lymphocytes. The exhaustion of T cells in COVID-19 is poorly understand, but some data could suggest a possible role of PD-1/PD-L1 axis. The aim of this study was to evaluate the possible role of PD-L1 expression in the pulmonary tissue in subjects affected by COVID-19. The presence of SARS-CoV-2 in the pulmonary tissue, and its exact location, was indagated by in situ hybridization; the expression of PD-L1 and CD8 in the same tissue was indagated by immunohistochemistry. Overall, PD-L1 resulted diffusely expressed in 70% of the cases, and an intense expression was observed in 43.5% of cases. Diffuse and intense presence of SARS-CoV-2 by in situ hybridization significantly correlated with an intense PD-L1 expression, and with expression of PD-L1 by pneumocytes. PD-L1 is overexpressed in the pulmonary tissue of subjects died from COVID-19, and mainly in subjects with a high viral load. These data suggest a possible role of PD-L1 in the immune system exhaustion at the basis of the severe forms of the disease.
MeSH term(s)	B7-H1 Antigen/genetics ; B7-H1 Antigen/metabolism ; COVID-19 ; Humans ; Immune System ; Lung ; SARS-CoV-2
Chemical Substances	B7-H1 Antigen ; CD274 protein, human
Language	English
Publishing date	2022-06-13
Publishing country	United States
Document type	Journal Article
ZDB-ID	1071345-1
ISSN	1045-4403
ISSN	1045-4403
DOI	10.1615/CritRevEukaryotGeneExpr.2021040575
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Article ; Online: Variable levels of spike and ORF1ab RNA in post-mortem lung samples of SARS-CoV-2-positive subjects: comparison between ISH and RT-PCR.

Virchows Archiv : an international journal of pathology

2022 Volume 480, Issue 3, Page(s) 597–607

Abstract: Post-mortem examination plays a pivotal role in understanding the pathobiology of the SARS-CoV-2; thus, the optimization of virus detection on the post-mortem formalin-fixed paraffin-embedded (FFPE) tissue is needed. Different techniques are available ... ...

Abstract	Post-mortem examination plays a pivotal role in understanding the pathobiology of the SARS-CoV-2; thus, the optimization of virus detection on the post-mortem formalin-fixed paraffin-embedded (FFPE) tissue is needed. Different techniques are available for the identification of the SARS-CoV-2, including reverse transcription polymerase chain reaction (RT-PCR), immunohistochemistry (IHC), in situ hybridization (ISH), and electron microscopy. The main goal of this study is to compare ISH versus RT-PCR to detect SARS-CoV-2 on post-mortem lung samples of positive deceased subjects. A total of 27 samples were analyzed by RT-PCR targeting different viral RNA sequences of SARS-CoV-2, including envelope (E), nucleocapsid (N), spike (S), and open reading frame (ORF1ab) genes and ISH targeting S and Orf1ab. All 27 cases showed the N gene amplification, 22 out of 27 the E gene amplification, 26 out of 27 the S gene amplification, and only 6 the ORF1ab gene amplification. The S ISH was positive only in 12 out of 26 cases positive by RT-PCR. The S ISH positive cases with strong and diffuse staining showed a correlation with low values of the number of the amplification cycles by S RT-PCR suggesting that ISH is a sensitive assay mainly in cases carrying high levels of S RNA. In conclusion, our findings demonstrated that ISH assay has lower sensitivity to detect SARS-CoV-2 in FFPE compared to RT-PCR; however, it is able to localize the virus in the cellular context since it preserves the morphology.
MeSH term(s)	COVID-19/diagnosis ; Humans ; In Situ Hybridization/methods ; Lung ; RNA, Viral/genetics ; Reverse Transcriptase Polymerase Chain Reaction/methods ; SARS-CoV-2/genetics ; Sensitivity and Specificity
Chemical Substances	RNA, Viral
Language	English
Publishing date	2022-02-01
Publishing country	Germany
Document type	Journal Article
ZDB-ID	1184867-4
ISSN	1432-2307 ; 0945-6317
ISSN (online)	1432-2307
ISSN	0945-6317
DOI	10.1007/s00428-021-03262-8
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Article ; Online: Origins Space Telescope: predictions for far-IR spectroscopic surveys.

Bonato, Matteo / De Zotti, Gianfranco / Leisawitz, David / Negrello, Mattia / Massardi, Marcella / Baronchelli, Ivano / Cai, Zhen-Yi / Bradford, Charles M / Pope, Alexandra / Murphy, Eric J / Armus, Lee / Cooray, Asantha

Publications of the Astronomical Society of Australia : PASA

2019 Volume 36

Abstract: We illustrate the extraordinary potential of the (far-IR) Origins Survey Spectrometer (OSS) on board the Origins Space Telescope (OST) to address a variety of open issues on the co-evolution of galaxies and AGNs. We present predictions for blind surveys, ...

Abstract	We illustrate the extraordinary potential of the (far-IR) Origins Survey Spectrometer (OSS) on board the Origins Space Telescope (OST) to address a variety of open issues on the co-evolution of galaxies and AGNs. We present predictions for blind surveys, each of 1000 h, with different mapped areas (a shallow survey covering an area of 10 deg
Language	English
Publishing date	2019-04-24
Publishing country	Australia
Document type	Journal Article
ZDB-ID	2079225-6
ISSN	1448-6083 ; 1323-3580
ISSN (online)	1448-6083
ISSN	1323-3580
DOI	10.1017/pasa.2019.8
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Article: Protrombinemia e coagulazione del sangue nella valutazione del rischio operatorio.

ZACCARINI, C / ZOTTI, G C

Acta anaesthesiologica

2003 Volume 3, Issue 2, Page(s) 109–128

Title translation	Prothrombinemia and blood coagulation in the evaluation of surgical risks.
MeSH term(s)	Blood Coagulation ; Hemostatics ; Prothrombin ; Risk
Chemical Substances	Hemostatics ; Prothrombin (9001-26-7)
Language	Undetermined
Publishing date	2003-09-16
Publishing country	Italy
Document type	Journal Article
ZDB-ID	415678-x
ISSN	0001-5156
ISSN	0001-5156
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