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31.
Davide Moi Maria Chiara Cabua Viktoria Velichko Andrea Cocco Annalisa Chiappone Rita Mocci Stefania Porcu Monica Piras Stefano Bianco Fabio Pesciaioli Francesco Secci 《Molecules (Basel, Switzerland)》2022,27(22)
The straightforward, continuous-flow synthesis of cyclopropyl carbaldehydes and ketones has been developed starting from 2-hydroxycyclobutanones and aryl thiols. This acid-catalyzed mediated procedure allows access to the multigram and easily scalable synthesis of cyclopropyl adducts under mild conditions, using reusable Amberlyst-35 as a catalyst. The resins, suitably ground and used for filling steel columns, have been characterized via TGA, ATR, SEM and BET analyses to describe the physical–chemical properties of the packed bed and the continuous-flow system in detail. To highlight the synthetic versatility of the arylthiocyclopropyl carbonyl compounds, a series of selective oxidation reactions have been performed to access sulfoxide and sulfone carbaldehyde cyclopropanes, oxiranes and carboxylic acid derivatives. 相似文献
32.
Davide Moi Serena Vittorio Andrea Angeli Gianfranco Balboni Claudiu T. Supuran Valentina Onnis 《Molecules (Basel, Switzerland)》2023,28(1)
A small series of hydrazonobenzenesulfonamides was designed, synthesized and studied for their human carbonic anhydrase (hCA) inhibitory activity. The synthesized compounds were evaluated against hCA I, II, IX and XII isoforms using acetazolamide (AAZ) as the standard inhibitor. Various hydrazonosulfonamide derivatives showed inhibitory activity at low nanomolar levels with selectivity against the cytosolic hCA II isoform, as well as the transmembrane, tumor-associated enzymes hCA IX and XII. The most potent and selective hydrazones 8, 9, 10, 11, 19 and 24 were docked into isoforms I, II, IX and XII to better understand their activity and selectivity for the different CA isoforms. 相似文献
33.
Gaurangi Gogoi Ching Thian Moi Anindya Sundar Patra Devipriya Gogoi Peela Nageswara Rao Mohammad Qureshi 《化学:亚洲杂志》2019,14(24):4607-4615
One of the major limiting factors for efficient photoelectrochemical water oxidation is the fast recombination kinetics of photogenerated charge carriers. Herein, we propose a model system that utilizes ZnIn2S4 and hierarchical VS2 microflowers for efficient charge separation through a Z‐scheme pathway, without the need for an electron mediator. An impressive 18‐fold increase in photocurrent was observed for ZnIn2S4–VS2 compared to ZnIn2S4 alone. The charge‐transfer dynamics in the composite were found to follow a Z‐scheme pathway, which resulted in decreased charge recombination and greater accumulation of the surface charge. Furthermore, slow kinetics of the surface reaction in the ZnIn2S4–VS2 composite correlated to an increased surface‐charge capacitance. This feature of the composite material facilitated partial storage of the photogenerated charge carriers (e?/h+) under illumination and dark‐current conditions, thus storing and utilizing solar energy more efficiently. 相似文献
34.
S.N. Atutov V. Biancalana R. Calabrese T. Clauser R. Grimm V. Guidi G. Lamanna I. Lauer P. Lenisa V. Luger E. Mariotti L. Moi U. Schramm V. Stagno M. Stößel L. Tecchio V. Variale 《Hyperfine Interactions》1998,115(1-4):47-52
“White-light” cooling of an ion beam confined in a storage ring has been demonstrated at Test Storage Ring in Heidelberg.
Measurements aimed at comparing “white-light” with single-mode laser cooling show that “white-light” cooling gives lower temperatures
at higher ion densities both in a coasting and in a bunched beam.
This revised version was published online in July 2006 with corrections to the Cover Date. 相似文献
35.
Davide Moi Alessandro Deplano Andrea Angeli Gianfranco Balboni Claudiu T. Supuran Valentina Onnis 《Molecules (Basel, Switzerland)》2022,27(17)
Here we report a small library of hydrazinocarbonyl-ureido and thioureido benzenesulfonamide derivatives, designed and synthesized as potent and selective human carbonic anhydrase inhibitors (hCAIs). The synthesized compounds were evaluated against isoforms hCA I, II, IX and XII using acetazolamide (AAZ) as standard inhibitor. Several urea and thiourea derivatives showed inhibitory activity at low nanomolar levels with selectivity against the cytosolic hCA II isoform, as well as the transmembrane, tumor-associated enzymes hCA IX and XII. The thiourea derivatives showed enhanced potency as compared to urea analogues. Additionally, eight compounds 5g, 5m, 5o, 5q, 6l, 6j, 6o and 6u were selected for docking analysis on isoform I, II, IX, XII to illustrate the potential interaction with the enzyme to better understand the activity against the different isoforms. 相似文献
36.
S. Gozzini E. Mariotti C. Gabbanini A. Lucchesini C. Marinelli L. Moi 《Applied physics. B, Lasers and optics》1992,54(5):428-433
The performances of white light cooling are shortly reviewed and discussed. The velocity distributions modified by the cooling laser are calculated under different boundary conditions and a new experimental approach, which permits to obtain a sharp edge laser bandwidth, is taken into consideration. Finally, the preliminary experimental results on a sodium beam cooled by a lamp laser are reported. 相似文献
37.
We report on the collisional processes that occur in alkali metal vapours upon illumination with a laser tuned to the first principal atomic transition, observed in experiments performed under various conditions. Several proposed mechanisms for the population of higher atomic and molecular levels are presented and discussed. 相似文献
38.
Burchianti A Bogi A Marinelli C Maibohm C Mariotti E Moi L 《Physical review letters》2006,97(15):157404
We observe reversible light assisted formation and evaporation of rubidium clusters embedded in nanoporous silica. Metallic nanoparticles are cyclically produced and evaporated by weak blue-green and near-infrared light, respectively. The atoms photodetached from the huge surface of the silica matrix build up clusters, whereas cluster evaporation is increased by induced surface plasmon excitation. Frequency tuning of light activates either one process or the other and the related changes of glass transparency become visible to the naked eye. We demonstrate that the porous silica, loaded with rubidium, shows memory of illumination sequences behaving as a rereadable and rewritable optical medium. These processes take place as a consequence of the strong confinement of atoms and particles at the nanoscale. 相似文献
39.
Ming-Feng Hou Fu Ou-Yang Chung-Liang Li Fang-Ming Chen Chieh-Han Chuang Jung-Yu Kan Cheng-Che Wu Shen-Liang Shih Jun-Ping Shiau Li-Chun Kao Chieh-Ni Kao Yi-Chen Lee Sin-Hua Moi Yao-Tsung Yeh Chien-Ju Cheng Chih-Po Chiang 《Experimental & molecular medicine》2021,53(10):1636
In Western countries, breast cancer tends to occur in older postmenopausal women. However, in Asian countries, the proportion of younger premenopausal breast cancer patients is increasing. Increasing evidence suggests that the gut microbiota plays a critical role in breast cancer. However, studies on the gut microbiota in the context of breast cancer have mainly focused on postmenopausal breast cancer. Little is known about the gut microbiota in the context of premenopausal breast cancer. This study aimed to comprehensively explore the gut microbial profiles, diagnostic value, and functional pathways in premenopausal breast cancer patients. Here, we analyzed 267 breast cancer patients with different menopausal statuses and age-matched female controls. The α-diversity was significantly reduced in premenopausal breast cancer patients, and the β-diversity differed significantly between breast cancer patients and controls. By performing multiple analyses and classification, 14 microbial markers were identified in the different menopausal statuses of breast cancer. Bacteroides fragilis was specifically found in young women of premenopausal statuses and Klebsiella pneumoniae in older women of postmenopausal statuses. In addition, menopausal-specific microbial markers could exhibit excellent discriminatory ability in distinguishing breast cancer patients from controls. Finally, the functional pathways differed between breast cancer patients and controls. Our findings provide the first evidence that the gut microbiota in premenopausal breast cancer patients differs from that in postmenopausal breast cancer patients and shed light on menopausal-specific microbial markers for diagnosis and investigation, ultimately providing a noninvasive approach for breast cancer detection and a novel strategy for preventing premenopausal breast cancer.Subject terms: Bacterial genetics, Breast cancer 相似文献
40.
A. Lucchesini L. Dell'Amico I. Longo C. Gabbanini S. Gozzini L. Moi 《Il Nuovo Cimento D》1991,13(5):677-685
Summary Diode laser spectroscopy of water vapour has been performed in the near IR and the pressure broadening coefficients in nitrogen
and in air have been measured for one rotovibrational line. Detection of water vapour in the atmosphere has been obtained
and an evaluation of the sensitivity of our apparatus is reported. Discussion for further improvements is made. 相似文献