cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Gain and maintenance of the occipito-anterior fetal position through the prenatal use of a maternal exercise regime
Creators: name: Frazier, Charlene Anne
Publisher: name: University of Utah
Year: 2012

description: Occipitoposterior fetal positions in gravid women during labor and delivery have been recognized as more uncomfortable and more often associated with intrusive obstetrical interventions than the more common occipito-anterior labors and deliveries. The study attempted to determine whether a prenatal exercise regime consisting of maternal hands and knees posture and the external forces of pelvic rocking and stroking of the maternal flank over the fetal back could decrease occipitoposterior fetal positions at labor onset. It was postulated that the maternity experience would be safer and more satisfying if the nonintrusive exercise regime was associated with an increase in anterior fetal rotations. Such findings would then support the studies by C. M. Andrews (1975, 1977) which demonstrated 100?^ fetal anterior positions after a single 10-minute practice of the above exercise combination.  The following research questions were proposed:  1. What effect will a specific prenatal exercise regime have on the intrauterine fetal position found at labor onset?  2. After the above exercise regime, will more anterior fetal positions be observed at labor onset?  A sample of 42 gravid women between the ages of 17 and 39 years from Hill Air Force Base Prenatal Clinic were interviewed, examined, and taught the exercise regime between the 37th and 40th week of pregnancy. Each subject was instructed to practice the exercise for 10 minutes each day until the onset of labor. Examiners used Leopold's Maneuvers to determine fetal position at the prenatal contact and during the admission examination for labor. Data were computerized and analyzed through the use of frequencies, chi-squares, t tests, and one-way analysis of variance tests.  Among the gravid subjects who practiced good compliance to the exercise regime, 58.33% of the primiparas and 66.67% of the multiparas demonstrated fetal rotation consistent with the forces of the exercise regime (gravity, motion, and abdominal stroking) indicating that the exercise was associated with fetal rotation (research question 1). Engagement of the fetal head in the maternal pelvis did not hinder fetal rotation. Occipi to posterior fetal positions decreased from 25% prenatally to 12.5% at labor onset; occipito-anterior fetal positions increased from 31.25% prenatally to 34.4% at labor onset, which was indicative of a trend toward support of research question 2 but was not statistically significant.
Una dieta a base di asteroidi
Creators: Giuseppe Fiasconaro
Publisher: name: Media Inaf
Year: 2024

Né lattuga, né rucola e neanche pomodorini. Non alghe e nemmeno cibo liofilizzato. L'alimentazione degli astronauti impegnati nelle future missioni spaziali a lungo termine potrebbe essere a base di asteroidi. Secondo un nuovo studio condotto da un team di ricerca della Western University, la trasformazione batterica della materia organica di un asteroide come Bennu potrebbe fornire tanto cibo da sfamare i futuri esploratori dello spazio per moltissimi anni
Bianca Garilli: il ricordo del gruppo Cosmos
Creators: Redazione Media Inaf
Publisher: name: Media Inaf
Year: 2024

Dirigente di ricerca all’Inaf Iasf Milano, istituto del quale era stata direttrice fino al 2023, l’astrofisica Bianca Garilli ci ha prematuramente lasciati lo scorso 30 settembre. La ricordano oggi su Media Inaf colleghe e colleghi del gruppo Cosmos: Marco Scodeggio, Adriana Gargiulo, Chiara Mancini, Dario Bottini, Eleonora Villa, Giustina Vietri, Letizia Cassarà, Manuela Molina, Marco Fumana, Mari Polletta, Melita Carbone, Micol Rossati, Paolo Franzetti e Susanna Bisogni
Demonstration of long-range correlations via susceptibility measurements in a one-dimensional superconducting Josephson spin chain
Creators: name: Tennant, Daniel M.
name: Dai, Xi
name: Martinez, Antonio J.
name: Trappen, Robbyn
name: Melanson, Denis
name: Yurtalan, M A.
name: Tang, Yongchao
name: Bedkihal, Salil
name: Yang, Rui
name: Novikov, Sergei
name: Grover, Jeffery A.
name: Disseler, Steven M.
name: Basham, James I.
name: Das, Rabindra
name: Kim, David K.
name: Melville, Alexander J.
name: Niedzielski, Bethany M.
name: Weber, Steven J.
name: Yoder, Jonilyn L.
name: Kerman, Andrew J.
name: Mozgunov, Evgeny
name: Lidar, Daniel A.
name: Lupascu, Adrian
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Spin chains have long been considered an effective medium for long-range interactions, entanglement generation, and quantum state transfer. In this work, we explore the properties of a spin chain implemented with superconducting flux circuits, designed to act as a connectivity medium between two superconducting qubits. The susceptibility of the chain is probed and shown to support long-range, cross chain correlations. In addition, interactions between the two end qubits, mediated by the coupler chain, are demonstrated. This work has direct applicability in near term quantum annealing processors as a means of generating long-range, coherent coupling between qubits.
description: 25 pages, 14 figures
8-alkoxyadenosines modulate RNA interference efficacy and off-pathway protein binding
Creators: name: Ghanty, Uday
Publisher: name: University of Utah
Year: 2012
Subjects: 8-alkoxyadenosine, Caspase 2 gene silencing, off-pathway protein binding, off-target effect, RNAi, SiRNA

description: Despite the tremendous potential of short interfering RNA (siRNA) as a novel biopharmaceutical, its therapeutic utility has not been maximized mainly due to lack of proper in vivo delivery vehicle, off-target effects and several off-pathway protein interactions instigating immunostimulation. Judicious chemical modification of different parts of the siRNA was foreseen as a potential solution to the off-target gene silencing and the off-pathway protein binding. In this study, 8-alkoxyadenosines were explored as a nucleobase modification in the context of the siRNA-based RNA interference (RNAi). These nucleosides are unusual in that they have the potential to exist as an equilibrium mixture of the syn and anti conformers. When placed opposite to U in the complementary strand, 8- alkoxyadenosines can exist in normal anti conformation and form canonical Watson- Crick hydrogen bonding; interestingly, with G as the base-pairing partner, these unusual nucleosides can potentially flip into the syn conformation and form unorthodox Hoogsteen base-pairing. 8-Alkoxyadenosine phosphoramidites were synthesized and incorporated into the guide strand of caspase 2 siRNA at four different positions - two in the seed region, one at the cleavage junction and another nearer to the 3´-end of the guide strands. Thermal stabilities of the corresponding siRNA duplexes showed that U is still preferred over G as the base-pairing partner in the complementary strand. When compared to the unmodified iv positive control siRNAs, singly modified siRNAs have knocked down caspase 2 insert mRNA (generated from a recombinant plasmid) efficiently and with little or no loss of efficacy. Doubly modified siRNAs were found to be less effective and lose their efficacy at low nanomolar concentrations. Persistent placement of steric blockade in the minor groove affected the RNAi efficacy significantly; this observation supports the hypothesis and indicates the necessity of ‘switching' the bulky alkyloxy groups in the major groove, when modified siRNAs interact with the RISC assembly. SiRNAs modified at positions 6 and 10 of the guide strand were found to be effective against preventing interaction with the RNA-dependent protein kinase (PKR). In summary, 8-alkoxyadenosine-containing siRNAs prevented undesired off-pathway protein binding, without compromising the RNAi efficacy significantly.
In-Situ Sensing and Dynamics Predictions for Electrothermally-Actuated Soft Robot Limbs
Creators: name: Sabelhaus, Andrew P.
name: Mehta, Rohan K.
name: Wertz, Anthony T.
name: Majidi, Carmel
Publisher: name: arXiv
Year: 2021
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Untethered soft robots that locomote using electrothermally-responsive materials like shape memory alloy (SMA) face challenging design constraints for sensing actuator states. At the same time, modeling of actuator behaviors faces steep challenges, even with available sensor data, due to complex electrical-thermal-mechanical interactions and hysteresis. This article proposes a framework for in-situ sensing and dynamics modeling of actuator states, particularly temperature of SMA wires, which is used to predict robot motions. A planar soft limb is developed, actuated by a pair of SMA coils, that includes compact and robust sensors for temperature and angular deflection. Data from these sensors are used to train a neural network based on the long short-term memory (LSTM) architecture to model both unidirectional (single SMA) and bidirectional (both SMAs) motion. Predictions from the model demonstrate that data from the temperature sensor, combined with control inputs, allow for dynamics predictions over extraordinarily long open-loop timescales (10 minutes) with little drift. Prediction errors are on the order of the soft deflection sensor's accuracy. This architecture allows for compact designs of electrothermally-actuated soft robots that include sensing sufficient for motion predictions, helping to bring these robots into practical application.
description: 17 pages, 8 figures
The implementation of call bells and exit alarms on a psychiatric unit
Creators: name: Bardall, Morgan E.
Publisher: name: No Publisher Supplied
Year: 2020

description: Purpose of Project: Fall prevention is a long-standing challenge in many areas of healthcare. While millions have been spent to develop techniques to reduce falls for patients on medical units. This is not the case in psychiatric units. There is a severe lack in implementable research-based techniques currently used to reduce falls in psychiatric units, especially at the bedside and in the bathroom. This project implemented research-based tools that are widely used in medical units to test their effectiveness in falls reduction in psychiatric units.Methodology: Exit alarms and call bells were provided to patients that were considered high risk according to the psychiatric specific Wilson Sims Fall Scale. The project examined if these tools are helpful to reduce falls. It documented the effects on perceived nursing workload and on improved communication of patient needs to staff. The project was conducted in four phases: Education, Deployment, Survey, and Data analysis. The number of and location of falls during the four months before and after implementation of the intervention were compared, as well as nominal data from the reasons for eligible patients not receiving the intervention. Nominal data from the survey was also analyzed. The study examined open ended log and survey data to identify any patterns in responses. Results: Results of falls date showed an overall reduction of falls, but statistical significance could not be established. Falls data showed a reduction of falls in the bedroom and bathroom. Nursing Survey revealed that nurses felt that call bells and exit alarms are helpful to communicate their patients’ needs, helped to prevent patients from falling, and that both exit alarms and call bells more effective in preventing falls than either one intervention individually. Nurse were evenly split on if they felt that using call bells and exit alarms had reduced work load.Implications for Practice: Call bells and exit alarms in patients who are high fall risk may be effective tools, Are accepted by nurses, and there is evidence to further study them.The unit had decided to continue their use, but further expanded testing is necessary to substantiate significant results of the falls reduction. After further testing, considerations will be made to spread their use throughout the hospital system. This has the potential to save money on costly falls and reductions in reimbursement, which should also be studied in the future. Further study is needed to provide significant results that support improvements in patient care and safety with fewer falls and potential cost savings for the hospital system.
Sterile Neutrino Searches with MicroBooNE: Electron Neutrino Disappearance
Creators: name: Denton, Peter B.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A sterile neutrino is a well motivated minimal new physics model that leaves an imprint in neutrino oscillations. Over the last two decades, a number of hints pointing to a sterile neutrino have emerged, many of which are pointing near $m_4\sim1$ eV. Here we show how MicroBooNE data can be used to search for electron neutrino disappearance using each of their four analysis channels. We find a hint for oscillations with the highest single channel significance of $2.4σ$ (using the Feldman-Cousins approach) coming from the Wire-Cell analysis and a simplified treatment of the experimental systematics. The preferred parameters are $\sin^2(2θ_{14})=0.35^{+0.19}_{-0.16}$ and $Δm^2_{41}=1.25^{+0.74}_{-0.39}$ eV$^2$. This region of parameter space is in good agreement with existing hints from source experiments, is at a similar frequency but higher mixing than indicated by reactor anti-neutrinos, and is at the edge of the region allowed by solar neutrino data. Existing unanalyzed data from MicroBooNE could increase the sensitivity to the $>3σ$ level.
description: 11 pages, 9 figures, 2 tables, maybe one sterile neutrino; comments welcome! v2: analysis significantly upgraded, conclusions similar
Whirling interlayer fields as a source of stable topological order in moiré CrI3
Creators: name: Ghader, Doried
name: Jabakhanji, Bilal
name: Stroppa, Alessandro
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: The moiré engineering of two-dimensional magnets opens unprecedented opportunities to design novel magnetic states with promises for spintronic device applications. The possibility of stabilizing skyrmions in these materials without chiral spin-orbit couplings or dipolar interactions is yet to be explored. Here, we investigate the formation and control of ground state topological spin textures (TSTs) in moiré CrI3 using stochastic Landau-Lifshitz-Gilbert simulations. We unveil the emergence of interlayer vortex and antivortex Heisenberg exchange fields, stabilizing spontaneous and field-assisted ground state TSTs with various topologies. The developed study accounts for the full bilayer spin dynamics, thermal fluctuations, and intrinsic spin-orbit couplings. By examining the effect of the Kitaev interaction and the next nearest-neighbor Dzyaloshinskii-Moriya interaction, we propose the latter as the unique spin-orbit coupling mechanism compatible with experiments on monolayer and twisted CrI3. Our findings contribute to the current knowledge about moiré skyrmionics and uncover the nature of spin-orbit coupling in CrI3.
Characterization of complex mixtures of isomeric oligonucleotides by electrospray ionization tendem mass spectrometry
Creators: name: Pomerantz, Steven C.
Publisher: name: University of Utah
Year: 2012
Subjects: Electron Ionization
Tetramethylethylenediamine

description: The research presented here explores the boundaries to which electrospray ionization mass spectrometry can be extended in the analysis of isomeric nucleic acids. Methods of analysis and guidelines for interpretation of the complex collision-induced dissociation mass spectra derived from unfractionated mixtures of isobaric oligonucleotides are first presented as a foundation for the subsequent work.  Methods and techniques were developed for the detection and sequence analysis of oligonucleotides containing pseudouridine, the most abundant of the modified nucleosides in nature, and the only one of more than 100 known modifications that does not present a mass shift from its underlying, unmodified precursor. These methods do not require any chemical derivatization, nor other specialized instrumentation.  Finally, a novel assay was developed that utilizes liquid chromatography and tandem mass spectrometry with two stages of dissociation to determine the presence of pseudouridylated oligonucleotides in complex mixtures. Nanospray tandem mass spectrometry of isolated fractions, in concert with a gene sequence, enabled the primary structure determination of pseudouridine in the context of large RNAs (?1500 nt).
Sardinia Radio Telescope e Seti, ecco i primi risultati
Creators: Ufficio stampa Inaf
Publisher: name: Media Inaf
Year: 2024

In occasione del Congresso internazionale di astronautica in corso a Milano fino al 18 ottobre, la collaborazione tra l’Istituto nazionale di astrofisica e il progetto Breakthrough Listen presenta i primi risultati scientifici ottenuti con le osservazioni dedicate al programma Seti effettuate con il Sardinia Radio Telescope dell’Inaf, in Sardegna
Biodegradable macromolecular contrast agents for magnetic resonance imaging
Creators: name: Mohs, Aaron Michael
Publisher: name: University of Utah
Year: 2012
Subjects: Imaging Enhancement

description: Magnetic resonance imaging (MRI) is a powerful tool for diagnostic imaging. Low molecular weight paramagnetic Gd(III) complexes are often used to enhance the depiction of disease morphology or functionality. Although safe, these complexes have poor pharmacokinetic performance limiting their application when selective enhancement of the blood pool is needed. Macromolecular Gd(III) complexes have demonstrated significantly higher contrast enhancement of the vasculature because their large size limits their clearance and diffusion from the blood pool into surrounding tissue. Macromolecular Gd(III) complexes have shown superior efficacy over clinically approved contrast agents in the noninvasive detection of a wide range of disease in preclinical studies. Unfortunately, the prolonged circulation of previously designed macromolecular Gd(III) complexes results in the metabolic release and subsequent tissue uptake of highly toxic Gd(III) ions. A promising alternative to this challenge is the development of biodegradable polydisulfide Gd(III) complexes. Initially, these polymers would circulate in the vasculature giving the efficacy of a macromolecular contrast agent, but over time would be gradually degraded via the thiol-disulfide exchange reaction yielding small Gd(III) complexes that can readily be cleared. Specifically, the work undertaken in this project was to modify the degradation of polydisulfide Gd(III) complexes by conjugating poly(ethylene glycol) (PEG) around the disulfide bond of poly(GdDTPA-co-L-cystine) (GDCP) yielding PEG-GDCP. PEG-GDCP was synthesized in a variety of molecular weights, PEG grafting degrees, and PEG sizes. In vitro, these agents showed degradation to a thiol, which was dependent on the type of PEG grafting. In vivo, PEG-GDCP showed excellent enhancement of the blood pool of mice compared to a clinical control, Gd(DTPA-BMA), including very small vasculature. One agent tested, PEG1000
L’anno dell’intelligenza artificiale
Creators: Redazione Media Inaf
Publisher: name: Media Inaf
Year: 2024

I premi Nobel per la fisica e per la chimica assegnati nel 2024 hanno una matrice comune: l’intelligenza artificiale. E premiano anche la capacità – molto umana – di collegare discipline sostanzialmente diverse. Vi proponiamo una riflessione degli astrofisici dell’Inaf di Arcetri Francesco Belfiore e Germano Sacco sul riconoscimento più atteso dell’anno
КАЧЕСТВО ПЫЛЬЦЫ СОСНЫ ОБЫКНОВЕННОЙ В ЗОНЕ ДЕЙСТВИЯ ДЫМОВЫХ ВЫБРОСОВ АО «КАРАБАШМЕДЬ». QUALITY OF SCOTS PINE POLLEN IN THE ZONE OF SMOKE EMISSIONS OF AO «KARABASHMED»
Creators: name: Георгиевна, Махнева Светлана
name: Мохначев Павел Евгеньевич
Publisher: name: Zenodo
Year: 2020
Subjects: Scots pine, reproduction, pollen, pollen fertility, pollen tube, Karabash, industrial pollution.

description: Проведено исследование качества пыльцы сосны обыкновенной в зонах многолетнего воздействия дымовых выбросов АО «Карабашмедь". Результаты работы свидетельствуют о высокой чувствительности мужской генеративной системы сосны обыкновенной даже к слабому уровню техногенного загрязнения выбросами медеплавильного производства. Лучшими диагностическими возможностями для оценки состояния мужской генеративной системы характеризуются показатели прорастания пыльцы и длины пыльцевых трубок. Объективная оценка репродуктивных возможностей вида в условиях многолетнего продолжающегося техногенного загрязнения среды требует учета также качественных и количественных параметров древостоя, условий почвенного питания, а также возможность элиминации из насаждения аномальных и неадаптивных форм сосны.
Brief an [Johann III Bernoulli]
Creators: name: Lalande, Joseph Jérôme Le Français de
Publisher: name: [s.n.]
Year: 1779

description: von [Joseph Jérôme Le François] Dela Lande
description: Öffentliche Bibliothek der Universität Basel
description: Französisch
description: Teilabdr.: Bernoulli: Lettres sur différens sujets, 3 1779, 144
Activation of the apoptotic pathway in response to chemotherapy in childhood leukemia
Creators: name: Liu, Tong
Publisher: name: University of Utah
Year: 2012
Subjects: Drug Therapy

description: Acute lymphoblastic leukemia (ALL) is the most common pediatric malignancy. Although patients with ALL have benefited greatly from dramatic advances in chemotherapy, a substantial number of patients eventually fail to respond to treatment, and their prognosis is poor.  Cytotoxic chemotherapeutic agents kill leukemic cells by inducing apoptosis. The process of apoptosis is regulated by the relative levels of pro- and anti-apoptotic proteins. However, changes in levels of pro- and anti-apoptotic proteins in human leukemia samples in response to therapy remain largely unknown. In childhood leukemia the apoptosis of blast cells in peripheral blood before and during treatment is of great interest. In this study, leukemic blast cells were collected from 16 children newly diagnosed with leukemia and from 3 patients who relapsed. Blasts were harvested from the peripheral blood at 0, 1, 6, 24, and 48 hours following the onset of chemotherapy. Both pro- and anti-apoptotic proteins including p53, p21, MDM-2, BCL-2, BCL-Xl, BCL-Xs, and BAX were analyzed by Western Blot.   An ex vivo culture system was developed to assess baseline apoptosis and increased apoptosis associated with treatment.  Results demonstrated variability in apoptosis among circulating blasts at diagnosis and after 24 hours of chemotherapy. Using the ex vivo culture system, apoptotic patterns could be divided into low and high response groups based on whether a 30% increase in apoptosis was observed in response to chemptherapy. Relapsed cases failed to show an increase in apoptosis with treatment. Among 14 patients who received drugs that induce apoptosis via a p53-dependent pathway, 7 patients showed an increase in p53 protein levels. There was a correlation between apoptosis ex vivo culture and p53 levels in most cases. The early apoptosis following chemotherapy in culture correlated with changes in p53 protein expression.  Diverse patterns of changes in BCL-2 family protein expression occurred in response to treatment. Although all but two patients showed a significant decrease in circulating tumor cells by 24 hours of therapy, the most profound changes in protein expression were observed between 24 and 48 hours. This suggests that the levels of BCL-2 family proteins examined here may not be involved in the early apoptotic response following chemotherapy.  This study revealed profiles of kinetic changes of cellular pro- and anti-apoptotic proteins in leukemic cells in response to chemotherapy. Apoptotic response to anticancer drugs is important in determining drug sensitivity and resistance. These results will lead to a better understanding of the apoptotic mechanism of drug resistance to chemotherapy in leukemia.
Le prove di una esoluna vulcanica su Wasp-49 b
Creators: Maura Sandri
Publisher: name: Media Inaf
Year: 2024

L'esistenza di una luna al di fuori del Sistema solare non è mai stata confermata, ma un nuovo studio condotto dalla Nasa potrebbe fornirne una prova indiretta. Si tratta di una nube di sodio che, secondo i risultati, è vicina ma leggermente sfasata rispetto all'esopianeta. Nube che sembra provenire da una sorgente che produce circa 100mila chilogrammi di sodio al secondo. Tutti i dettagli su ApJ Letters
Dynamical generation of chiral $W$ and Greenberger-Horne-Zeilinger states in laser-controlled Rydberg-atom trimers
Creators: name: Haase, Thorsten
name: Alber, Gernot
name: Stojanovic, Vladimir M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Motivated by the significantly improved scalability of optically-trapped neutral-atom systems, extensive efforts have been devoted in recent years to quantum-state engineering in Rydberg-atom ensembles. Here we investigate the problem of engineering generalized (``twisted'') $W$ states, as well as Greenberger-Horne-Zeilinger (GHZ) states, in the strongly-interacting regime of a neutral-atom system. We assume that each atom in the envisioned system initially resides in its ground state and is subject to several external laser pulses that are close to being resonant with the same internal atomic transition. In particular, in the special case of a three-atom system (Rydberg-atom trimer) we determine configurations of field alignments and atomic positions that enable the realization of chiral $W$ states -- a special type of twisted three-qubit $W$ states of interest for implementing noiseless-subsystem qubit encoding. Using chiral W states as an example we also address the problem of deterministically converting twisted $W$ states into their GHZ counterparts in the same three-atom system, thus significantly generalizing recent works that involve only ordinary $W$ states. We show that starting from twisted -- rather than ordinary -- $W$ states is equivalent to renormalizing downwards the relevant Rabi frequencies. While this leads to somewhat longer state-conversion times, we also demonstrate that those times are at least two orders of magnitude shorter than typical lifetimes of relevant Rydberg states.
description: final, published version
Tutti in gita all’Isola delle stelle
Creators: Redazione Media Inaf
Publisher: name: Media Inaf
Year: 2024

Il primo CodyTrip dell’anno scolastico sta per sbarcare alle Canarie. La meta è San Miguel de La Palma, sulla cui vetta si trova l’osservatorio Roque de Los Muchachos, uno dei migliori posti al mondo per l'osservazione del cielo, disseminato di cupole che ospitano tra i più potenti telescopi del pianeta. Tra questi, il Telescopio nazionale Galileo dell’Inaf, che i partecipanti visiteranno guidati da Gloria Andreuzzi e Alessandro Bogliolo
Brief an [Johann III Bernoulli]
Creators: name: Lalande, Joseph Jérôme Le Français de
Publisher: name: [s.n.]
Year: 1777

description: von [Joseph Jérôme Le François] Dela Lande
description: Öffentliche Bibliothek der Universität Basel
description: Französisch
description: Bl. 154: Quittung (1 Bl.)
Magnetic field effect in organic films and devices
Creators: name: Gautam, Bhoj Raj
Publisher: name: University of Utah
Year: 2013
Subjects: Electroluminescence
Hyperfine
Magneto-resistance
Photocurrent
Photoinduced absorption
Polaron pair

description: In this work, we focused on the magnetic field effect in organic films and devices, including organic light emitting diodes (OLEDs) and organic photovoltaic (OPV) cells. We measured magnetic field effect (MFE) such as magnetoconductance (MC) and magneto-electroluminescence (MEL) in OLEDs based on several π-conjugated polymers and small molecules for fields B<100 mT. We found that both MC(B) and MEL(B) responses in bipolar devices and MC(B) response in unipolar devices are composed of two B-regions: (i) an ‘ultra-small' region at |B| < 1-2 mT, and (ii) a monotonic response region at |B| >∼2mT. Magnetic field effect (MFE) measured on three isotopes of Poly (dioctyloxy) phenylenevinylene (DOO-PPV) showed that both regular and ultra-small effects are isotope dependent. This indicates that MFE response in OLED is mainly due to the hyperfine interaction (HFI). We also performed spectroscopy of the MFE including magneto-photoinduced absorption (MPA) and magneto-photoluminescence (MPL) at steady state conditions in several systems. This includes pristine Poly[2-methoxy-5-(2-ethylhexyl-oxy)-1,4-phenylene-vinylene] (MEH-PPV) films, MEH-PPV films subjected to prolonged illumination, and MEH-PPV/[6,6]-Phenyl C61 butyric acid methyl ester (PCBM) blend, as well as annealed and pristine C60 thin films. For comparison, we also measured MC and MEL in organic diodes based on the same materials. By directly comparing the MPA and MPL responses in films to MC and MEL in organic diodes based on the same active layers, we are able to relate the MFE in organic diodes to the spin densities of the excitations formed in the device, regardless of whether they are formed by photon absorption or carrier injection from the electrodes. We also studied magneto-photocurrent (MPC) and power conversion efficiency (PCE) of a 'standard' Poly (3-hexylthiophene)/PCBM device at various Galvinoxyl radical wt%. We found that the MPC reduction with Galvinoxyl wt% follows the same trend as that of the PCE enhancement. In addition, we also measured the MPC response of a series of OPV cells. We attribute the observed broad MPC to short-lived charge transfer complex species, where spin mixing is caused by the difference, Δg of the donor/acceptor g factors; whereas narrow MPC is due to HFI within long-lived polaron-pairs.
Oasi d’ordine nel caos del problema dei tre corpi
Creators: Marco Malaspina
Publisher: name: Media Inaf
Year: 2024

Grazie a milioni di simulazioni, il trentacinquenne Alessandro Alberto Trani, astrofisico teorico italiano oggi in Danimarca, è riuscito a individuare intervalli di regolarità nella caoticità che caratterizza il celebre problema dei tre corpi. Il risultato è stato pubblicato su Astronomy & Astrophysics
Master integrals for mixed QCD-QED corrections to charged-current Drell-Yan production of a massive charged lepton
Creators: name: Long, Ming-Ming
name: Zhang, Ren-You
name: Ma, Wen-Gan
name: Jiang, Yi
name: Han, Liang
name: Li, Zhe
name: Wang, Shuai-Shuai
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The master integrals for the mixed QCD-QED two-loop virtual corrections to the charged-current Drell-Yan process $q\bar{q}^{\prime} \rightarrow \ell ν$ are computed analytically by using the differential equation method. A suitable choice of master integrals makes it successful to cast the differential equation system into the canonical form. We keep the dependence on charged lepton mass in the building of differential equations and then expand the system against the ratio of small charged lepton mass to large $W$-boson mass. In such a way the final results will contain large logarithms of the form $\log(m_{\ell}^2/m_W^2)$. Finally, all the canonical master integrals are given as Taylor series around $d = 4$ spacetime dimensions up to order four, with coefficients expressed in terms of Goncharov polylogarithms up to weight four.
description: 34 pages, 6 figures
Brief an [Johann III] Bernoulli
Creators: name: Lalande, Joseph Jérôme Le Français de
Publisher: name: [s.n.]
Year: 1783

description: von [Joseph Jérôme Le François de] La Lande
description: Mit Oblate
description: Öffentliche Bibliothek der Universität Basel
description: Französisch
description: Druck t[eil]w., dt. Übers.: Astronomisches Jahrbuch für das Jahr ... - Berlin : Lange. - für 1786, 221
description: Druck t[eil]w., dt. Übers.: Astronomisches Jahrbuch für das Jahr ... - Berlin : Lange. - für 1787, [S.] 250
description: Teilabdr.: N[ouveaux] mém[oires de l']Acad[émie Royale des Sciences et des Belles-Lettres]. - Berlin : Decker. - 1784, H., 39-41
Sotto i cieli lontani
Creators: Maura Sandri
Publisher: name: Media Inaf
Year: 2024

Il nuovo saggio della collana “Scienza e Filosofia” di Mondadori, a opera di Graziano Chiaro dell’Inaf, offre una panoramica completa e attuale delle ricerche nel campo del Seti, esplorando sia gli aspetti teorici che le metodologie utilizzate per cercare segni di vita intelligente oltre il nostro pianeta. Con la prefazione di Patrizia Caraveo
A stress relief app to improve stressors in nursing students starting clinical rotations
Creators: name: Borova, Vjollca
Publisher: name: No Publisher Supplied
Year: 2020

description: Purpose of ProjectThe objective of this project was to distribute an educational intervention (i.e., a stress relief app) to students in their first semester of completing clinical rotations at a University in Newark, New Jersey. The anticipation was that the educational intervention would allow students to decrease their stress levels throughout their first semester in their clinical rotation, and it would eventually lead to change in their stress-relieving behaviors. MethodologyThe design of this project consisted of a pre- and post-test design to measure stress in nursing students before and after implementing the stress relief app. The pretest was administered before implementation of the stress relief app and the posttest was administered after the students had used the app. A student evaluation questionnaire was also distributed to the students.ResultsThe mean stress score was 34.2 prior to the intervention and fell to 28.1 in the post-intervention assessment. Results of the Wilcoxon test indicated a statistically significant decrease in the stress levels before and after the implementation of the Breethe stress relief app (Z = -2.345, p = .019).Implications for PracticeThere are many implications this DNP project can have on clinical practice, as well as educational practice. This project can be expanded on in a variety of different professions and student majors. It can be tested using a larger study group, one that does not only focus on nursing students in the DNP track.
Così Marte diventò invivibile
Creators: Giuseppe Fiasconaro
Publisher: name: Media Inaf
Year: 2024

Come ha fatto Marte a perdere le sue caratteristiche di abitabilità? Grazie alle indagini isotopiche condotte sul pianeta dal Sample Analysis at Mars a bordo del rover della Nasa Curiosity, un team di ricercatori del Goddard Space Flight Center ha trovato una possibile risposta. Tutti i dettagli nei Proceedings of the National Academy of Sciences
Role stress among nurses prepared at the Master's level in a clinical specialty who have job related administrative and management responsibilities
Creators: name: Madsen, Vanessa Brown
Publisher: name: University of Utah
Year: 2012
Subjects: Manpower
Nurses' Instruction

description: Master's of Science prepared clinical specialists are being utilized increasingly in today's health care system no only by clinical experts but as nurse administrators and managers.  Thus, difficulty arises when nurses are educated in graduate programs solely as clinicians, but are employed in positions that have an administrative component to them or are totally administrative.  Role stress (i.e., role conflict, role ambiguity, and role overload) often arises from the immense amount of managerial responsibilities these clinical specialists are required to carry out without prior education or experience in administration and management theory.  There are many variables contributing to role stress in master's prepared clinical specialists.  This study specifically examined these nurses' job related responsibilities, their educational preparation, and their perceived role stress.  Ten master's prepared clinical specialist from five acute care hospitals participated in the study by completing a demographic data sheet, a Stress Diagnostic Survey, and a twelve question personal interview.  Qualitative data were generated through the interviews to answer the four research questions.  The scores obtained from the Stress Diagnostic Survey were used in conjunction with the interviewees' responses to the interview questions to aid in understanding the role stress the nurses experienced.  Data analysis revealed that the clinical specialist do experience role stress in their current jobs due to lack of educational preparation in administration and management.  Formal orientation within their work organization and socialization of their roles also played an important factor in the degree to which they perceive role stress.  Implications for nursing programs that prepare clinical specialists are considered, as well as protocols for future studies.
Brief an [Johann III Bernoulli]
Creators: name: Lalande, Joseph Jérôme Le Français de
Publisher: name: [s.n.]
Year: 1784

description: von [Joseph Jérôme Le François de] La Lande
description: Text am Ende autograph
description: Öffentliche Bibliothek der Universität Basel
description: Französisch
description: Teilabdr.: N[ouveaux] mém[oires de l']Acad[émie Royale des Sciences et des Belles-Lettres]. - Berlin : Decker. - 1784, H., 33-34
Benchmarking exchange-correlation potentials with the mstar60 dataset: Importance of the nonlocal exchange potential for effective mass calculations in semiconductors
Creators: name: Laurien, Magdalena
name: Rubel, Oleg
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: The accuracy of effective masses predicted by density functional theory depends on the exchange-correlation functional employed, with nonlocal hybrid functionals giving more accurate results than semilocal functionals. In this article, we benchmark the performance of the Perdew-Burke-Ernzerhof (PBE), Tran-Blaha modified Becke-Johnson (TB-mBJ), and the hybrid Heyd-Scuseria-Ernzerhof (HSE06) exchange-correlation functionals and potentials for the calculation of effective masses with perturbation theory. We introduce the mstar60 dataset, which contains 60 effective masses derived from 18 semiconductors. The ratio between experimental and calculated effective masses is $1.70 \pm 0.20$ for PBE, $0.76 \pm 0.04$ for TB-mBJ, $0.99 \pm 0.04$ for HSE06. We reveal that the nonlocal exchange in HSE06 enlarges the optical transition matrix elements leading to the superior accuracy of the hybrid functional in the calculation of effective masses. The omission of nonlocal exchange in the transition operator for HSE leads to serious errors. For the semilocal PBE functional, the errors in the bandgap and the optical transition matrix elements partially cancel out in the calculation of effective masses. The TB-mBJ functional yields PBE-like matrix elements paired with realistic bandgaps leading to a consistent overestimation of effective masses. However, if only limited computational resources are available, experimental masses can be estimated by multiplying TB-mBJ masses with the factor of 0.76. We then compare effective masses of transition metal dichalcogenide bulk and monolayer materials: we show that changes in the matrix elements are important in understanding the layer-dependent effective mass renormalization.
description: 32 pages, 3 figures, 2 tables
Olimpiadi di astronomia: un bronzo a Katmandu
Creators: Giulia Iafrate
Publisher: name: Media Inaf
Year: 2024

Si sono concluse oggi a Katmandu, in Nepal, le Olimpiadi internazionali di astronomia e astrofisica. Erano presenti 79 partecipanti da 19 nazioni. Cinque gli “atleti” della squadra azzurra, alla sua prima partecipazione a queste olimpiadi in particolare. Ci racconta com’è andata la team leader Giulia Iafrate, dell’Inaf di Trieste, che ha accompagnato i ragazzi per tutti i nove giorni della manifestazione
Cross-national comparison of policies and attitudes toward the disabled: the effects of deinstitutionalization
Creators: name: Dimond, Elizabeth Susanne
Publisher: name: University of Utah
Year: 2012
Subjects: People with disabilities
Disabling environments

description: Policy changes influence public opinion and the lives of those impacted by new  programs and requirements they create. Deinstitutionalization has been an important part  of American disability policy and the subject of much debate and discussion. The  Americans with Disabilities Act (ADA) stands as one of the most significant benchmarks  in the evolution of the disability rights movement. This paper seeks to understand how  policies like the ADA have influenced public attitudes locally and internationally. There  has been a worldwide shift in the theory driving disability policy. The shift has gone from  a medical model with a focus on cures, treatments and rehabilitation to a civil rights  model with a focus on "disabling environments," discrimination and social stigma.  Attitude surveys from the United States (US) and the European Union (EU) are  used to establish the differences in attitudes across the nations of interest and a policy  analysis follows seeking to understand how policies are effecting attitudes. The study  also considers how the implementation of a civil rights model of disability policy affects  public attitudes. There are significant differences in public opinion across the nations  included in the study. Attitudes toward people with disabilities also vary by gender, age  and contact with people with disabilities. The key difference between the US policy and  the EU policy is the rate of change. The US policy changes were rapid and can be  classified as reactionary while the EU policy changes were implemented in pieces with  benchmarks and transition requirements.
Forme di vita in rocce vecchie due miliardi di anni
Creators: Chiara Badia
Publisher: name: Media Inaf
Year: 2024

Un gruppo guidato dall’Università di Tokyo ha scoperto microbi che vivono all'interno di una frattura sigillata di una roccia risalente a due miliardi di anni fa. Un record nel campo della biologia microbica: quello precedente era di 100 milioni di anni. E nuove prospettive per comprendere l'evoluzione della vita sulla Terra, aprendo la strada a future ricerche di vita extraterrestre, in particolare su Marte
Brief an [Johann III] Bernoulli
Creators: name: Lalande, Joseph Jérôme Le Français de
Publisher: name: [s.n.]
Year: 1779

description: von [Joseph Jérôme Le François de La Lande]
description: Die Unterschrift ist abgeschnitten
description: Mit Oblate
description: Öffentliche Bibliothek der Universität Basel
description: Französisch
description: Teilabdr., dt. Übers.: Astronomisches Jahrbuch oder Ephemeriden für das Jahr ... - Berlin : Lange. - f. 1782, II, 132
Brief an [Johann III] Bernoulli
Creators: name: Lalande, Joseph Jérôme Le Français de
Publisher: name: [s.n.]
Year: 1782

description: von [Joseph Jérôme Le François de] La Lande
description: Mit Oblate
description: Öffentliche Bibliothek der Universität Basel
description: Französisch
description: Teilabdruck, dt. Übers.: Astronomisches Jahrbuch für das Jahr ... - Berlin : Lange. - für 1785,227
description: Teilabdr.: N[ouveaux] mém[oires de l']Acad[émie Royale des Sciences et Belles-Lettres]. - Berlin. - 1782, H., 38-39
Una Rosetta per il compleanno di NoirLab
Creators: Rossella Spiga
Publisher: name: Media Inaf
Year: 2024

Per celebrare il quinto anniversario del NoirLab è stata pubblicata un'immagine della Nebulosa Rosetta da 570 milioni di pixel realizzata dalla Dark Energy Camera (DeCam) installata al telescopio da 4 metri Víctor M. Blanco nell'Osservatorio di Cerro Tololo in Cile. La spettacolare immagine multicolor mostra dettagli mai visti della Nebulosa Rosetta, lontana cinquemila anni luce da noi
Compliance among adolescents with asthma: instrument development
Creators: name: Skaar-Chandler, Carrie
Publisher: name: University of Utah
Year: 2012
Subjects: Patient Compliance
Questionnaires

description: This thesis is a pretest of Adolescent Compliance Questionnaire (ACQ), an instrument that was developed in Finland to measure factors related to patient compliance among adolescent who have diabetes.  This purpose was to test ACQ among American adolescents who have asthma to determine if the instrument would be useable among this group.  ACQ was translated to English and formatted to match issues pertinent to asthma self-care.  Twelve adolescents completed the questionnaire then answered interview questions regarding its contents.  ACQ was thorough in assessing self-care issues pertinent to adolescent with asthma; however, not all of the self-care items were applicable for every participant.  In addition, ACQ was brief and easily understood by the adolescents who participated.  Additional testing of ACQ will be necessary to determine statistical significance of items contained in the instrument and ACQs value in measuring compliance among American adolescent with asthma.
Seti e Inaf s’incontrano a Cagliari
Creators: Paolo Soletta
Publisher: name: Media Inaf
Year: 2024

Giovedì 10 e venerdì 11 ottobre in Sardegna si parla di civiltà aliene: Cagliari ospiterà il Seti Inaf-Italy Workshop 2024, ovvero gli stati generali della ricerca di vita extraterrestre a trazione italiana grazie alla partecipazione dei radiotelescopi dell’Inaf al programma Seti. Prenderanno parte all’evento i più alti vertici dell’Inaf e dei principali istituti mondiali che si occupano di ricerca d’intelligenza extraterrestre
A 3D Numerical Investigation into the Effect of Rounded Corner Radii on the Wind Loading of a Square Cylinder Subjected to Supercritical Flow
Creators: name: Vishwanath, Nivedan
name: Saravanakumar, Aditya Karthik
name: Dwivedi, Kush
name: Murthy, K. Ram Chandra
name: Gurugubelli, P. S.
name: Sabareesh, G. R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Tall buildings are often subjected to steady and unsteady forces due to external wind flows. Measurement and mitigation of these forces becomes critical to structural design in engineering applications. Over the last few decades, many approaches such as modification of the external geometry of structures have been investigated to mitigate wind-induced load. One such proven geometric modification involved rounding of sharp corners. In this work, we systematically analyze the effects of rounded corner radii on the flow-induced loading for a square cylinder. We perform 3-Dimensional (3D) simulations at a high Reynolds number of $Re = 1\times 10^5$ which is more likely to be encountered in practical applications. An Improved Delayed Detached Eddy Simulation (IDDES) formulation is used with the $k-ω$ Shear Stress Transport (SST) model for near-wall modelling. IDDES is capable of capturing flow accurately at high Reynolds numbers and prevents grid induced separation near the boundary layer. The effects of these corner modifications are analyzed in terms of the resulting mean and fluctuating components of the lift and drag forces compared to a sharp corner case. Plots of the angular distribution of the mean and fluctuating pressure coefficient along the square cylinder's surface illustrate the effects of corner modifications on the different parts of the cylinder. The windward corner's separation angle was observed to decrease with an increase in radius, resulting in a narrower and longer recirculation region. Furthermore, with an increase in radius, a reduction in the fluctuating lift, mean drag, and fluctuating drag coefficients has been observed.
Prima mappa globale della corona solare
Creators: Giuseppe Fiasconaro
Publisher: name: Media Inaf
Year: 2024

Utilizzando il coronografo Upgraded Coronal Multi-channel Polarimeter, un team di scienziati guidati dal National Center for Atmospheric Research (Usa) ha prodotto la prima mappa globale del campo magnetico della corona solare, la parte più esterna dell’atmosfera del Sole. Lo studio, pubblicato su Science, apre una nuova era nell'osservazione della nostra stella