cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Mid-Infrared Optical Spin Injection and Coherent Control
Creators: name: Fettu, Gabriel
name: Sipe, John E.
name: Moutanabbir, Oussama
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The optical injection of charge and spin currents are investigated in Ge$_{1-x}$Sn$_{x}$ semiconductors as a function of Sn content. These emerging silicon-compatible materials enable the modulation of these processes across the entire mid-infrared range. Under the independent particle approximation, the one- and two-photon interband absorption processes are elucidated, and the evolution of the coherent control is discussed for three different polarization configurations. To evaluate the contribution of high-energy transitions, a full-zone 30-band k$\cdot$p is employed in the calculations. It was found that, besides the anticipated narrowing of the direct gap and the associated shift of the absorption to longer wavelengths, incorporating Sn in Ge also increases the one-photon degree of spin polarization (DSP) at the $E_1$ resonance. Moreover, as the Sn content increases, the magnitude of the response tensors near the band edge exhibits an exponential enhancement. This behavior can be attributed to the Sn incorporation-induced decrease in the carrier effective masses. This trend appears to hold also at the $E_1$ resonance for pure spin current injection, at least at low Sn compositions. The two-photon DSP at the band edge exceeds the value in Ge to reach 60 % at a Sn content above 14 %. These results demonstrate that Ge$_{1-x}$Sn$_{x}$ semiconductors can be exploited to achieve the quantum coherent manipulation in the molecular fingerprint region relevant to quantum sensing.
description: 8 pages, 9 figures, with a Supporting Material file
title: ÐÐ¸Ð·ÐµÐ»Ñ Ð¼Ð¾ÑÐ½Ð¾ÑÑÑÑ 1300 ÐºÐÑ Ð´Ð»Ñ ÑÑÐ´Ð½Ð° Ð½Ð° Ð¿Ð¾Ð´Ð²Ð¾Ð´Ð½ÑÑ ÐºÑÑÐ»ÑÑÑ
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¼Ð°Ð³Ð¸ÑÑÑÐ°
titleType: Subtitle
title: Diesel engine capacity of 1300 kW for the hydrofoil
Creators: name: Ð¡Ð°Ð¸Ð½Ð¾Ð²Ð°, ÐÐ¸Ð°Ð½Ð°
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2019
Subjects: Ð¡ÑÐ´Ð¾Ð²ÑÐµ Ð´Ð²Ð¸Ð³Ð°ÑÐµÐ»Ð¸ Ð´Ð¸Ð·ÐµÐ»Ñ
ÐÐ¾Ð´ÑÐ¸Ð¿Ð½Ð¸ÐºÐ¸ ÑÐºÐ¾Ð»ÑÐ¶ÐµÐ½Ð¸Ñ
ÑÐ°Ð±Ð¾ÑÐ¸Ð¹ Ð¿ÑÐ¾ÑÐµÑÑ
Ð´Ð¸Ð½Ð°Ð¼Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ°ÑÑÐµÑ
ÑÐ°ÑÑÐµÑ Ð¿ÑÐ¾ÑÐ½Ð¾ÑÑÐ¸

description: Ð Ð´Ð°Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÐµ Ð¿ÑÐµÐ´ÑÑÐ°Ð²Ð»ÐµÐ½Ð° Ð¸Ð½ÑÐ¾ÑÐ¼Ð°ÑÐ¸Ñ Ð¾ ÑÐµÐ»ÐµÑÐ¾Ð¾Ð±ÑÐ°Ð·Ð½Ð¾ÑÑÐ¸ ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ¸ Ð¸ ÑÐ»ÑÑÑÐµÐ½Ð¸Ð¸ ÑÐ°Ð±Ð¾ÑÑ Ð¿Ð¾Ð´ÑÐ¸Ð¿Ð½Ð¸ÐºÐ¾Ð² ÑÐºÐ¾Ð»ÑÐ¶ÐµÐ½Ð¸Ñ ÐºÐ¾Ð»ÐµÐ½ÑÐ°ÑÐ¾Ð³Ð¾ Ð²Ð°Ð»Ð° ÑÑÐ´Ð¾Ð²Ð¾Ð³Ð¾ Ð´Ð¸Ð·ÐµÐ»Ñ. Ð Ð¿ÑÐ¾ÑÐµÑÑÐµ Ð¿ÑÐ¾ÐµÐºÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ð¿ÑÐ¾Ð²ÐµÐ´ÐµÐ½Ñ ÑÐ°ÑÑÐµÑÑ ÑÐ°Ð±Ð¾ÑÐµÐ³Ð¾ Ð¸ Ð´Ð¸Ð½Ð°Ð¼Ð¸ÑÐµÑÐºÐ¾Ð³Ð¾ Ð¿ÑÐ¾ÑÐµÑÑÐ¾Ð² Ð´Ð²Ð¸Ð³Ð°ÑÐµÐ»Ñ, ÑÐ´ÐµÐ»Ð°Ð½Ñ Ð²ÑÐ²Ð¾Ð´Ñ Ð¾Ð± ÑÑÐ°Ð²Ð½Ð¾Ð²ÐµÑÐµÐ½Ð½Ð¾ÑÑÐ¸ Ð´Ð²Ð¸Ð³Ð°ÑÐµÐ»Ñ. ÐÐ¾Ð¼Ð¸Ð¼Ð¾ ÑÑÐ¾Ð³Ð¾, Ð±ÑÐ» Ð¿ÑÐ¾Ð²ÐµÐ´ÐµÐ½ ÑÐ°ÑÑÐµÑ Ð½Ð° Ð¿ÑÐ¾ÑÐ½Ð¾ÑÑÑ Ð´Ð²Ð¸Ð³Ð°ÑÐµÐ»Ñ. ÐÑÐ»Ð° Ð²ÑÐ¿Ð¾Ð»Ð½ÐµÐ½Ð° Ð·Ð°Ð´Ð°ÑÐ° Ð¿Ð¾ Ð¾Ð¿ÑÐ¸Ð¼Ð¸Ð·Ð°ÑÐ¸Ð¸ ÑÐ°Ð±Ð¾ÑÑ Ð¿Ð¾Ð´ÑÐ¸Ð¿Ð½Ð¸ÐºÐ¾Ð² ÑÐºÐ¾Ð»ÑÐ¶ÐµÐ½Ð¸Ñ ÐºÐ¾Ð»ÐµÐ½ÑÐ°ÑÐ¾Ð³Ð¾ Ð²Ð°Ð»Ð° ÑÑÐ´Ð¾Ð²Ð¾Ð³Ð¾ Ð´Ð¸Ð·ÐµÐ»ÑÐ½Ð¾Ð³Ð¾ Ð´Ð²Ð¸Ð³Ð°ÑÐµÐ»Ñ.
description: This paper provides information on the feasibility of the development and improvement of the bearings of the crankshaft of a ship diesel engine. In the design process, calculations of the working and dynamic processes of the engine were carried out, and conclusions were drawn about the balance of the engine. In addition, the calculation was carried out on the strength of the engine. The task was carried out to optimize the operation of the bearings of the crankshaft of a ship diesel engine.
Enhancing phase-covariant channel performance with non-unitality
Creators: name: Siudzińska, Katarzyna
name: Studziński, Michał
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We analyze quantum communication properties of phase-covariant channels depending on their degree of non-unitality. In particular, we derive analytical formulas for minimal and maximal channel fidelity on pure states and maximal output purity. Next, we introduce a measure of non-unitality and show how to manipulate between unital and maximally non-unital maps by considering classical mixtures of quantum channels. Finally, we prove that maximal fidelity and maximal output purity increase with non-unitality and present several examples. Interestingly, non-unitality can also prolong quantum entanglement and lead to its rebirth.
X-ray impact on the protoplanetary disks around T Tauri stars
Creators: name: Aresu, G.
name: Kamp, I.
name: Meijerink, R.
name: Woitke, P.
name: Thi, W. -F.
name: Spaans, M.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Context: T Tauri stars have X-ray luminosities ranging from L_X = 10^28-10^32 erg/s. These luminosities are similar to UV luminosities (L_UV 10^30-10^31 erg/s) and therefore X-rays are expected to affect the physics and chemistry of the upper layers of their surrounding protoplanetary disks. Aim: The effects and importance of X-rays on the chemical and hydrostatic structure of protoplanetary disks are investigated, species tracing X-ray irradiation (for L_X >= 10^29 erg/s) are identified and predictions for [OI], [CII] and [NII] fine structure line fluxes are provided. Methods: We have implemented X-ray physics and chemistry into the chemo-physical disk code ProDiMo. We include Coulomb heating and H2 ionization as heating processes and primary and secondary ionization due to X-rays in the chemistry. Results: X-rays heat up the gas causing it to expand in the optically thin surface layers. Neutral molecular species are not much affected in their abundance and spatial distribution, but charged species such as N+, OH+, H2O+ and H3O+ show enhanced abundances in the disk surface. Conclusions: Coulomb heating by X-rays changes the vertical structure of the disk, yielding temperatures of ~ 8000 K out to distances of 50 AU. The chemical structure is altered by the high electron abundance in the gas in the disk surface, causing an efficient ion-molecule chemistry. The products of this, OH+, H2O+ and H3O+, are of great interest for observations of low-mass young stellar objects with the Herschel Space Observatory. [OI] (at 63 and 145 mic) and [CII] (at 158 mic) fine structure emission are only affected for L_X > 10^30 erg/s.
description: 6 pages, accepted for publication in Astronomy and Astrophysics (Interstellar and circumstellar matter section, date of acceptance is 24/11/2010)
First total synthesis of β-carboline alkaloid trigonostemine G and its derivatives
Creators: name: Szabó, Tímea
name: Dancsó, András
name: Volk, Balázs
name: Milen, Mátyás
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Molecular Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: 111714 Mental Health
subject: FOS: Health sciences

description: The β-carboline core is the base structure of several biologically active natural and unnatural compounds. Herein, we report the first total synthesis of trigonostemine G, which is a newly isolated natural β-carboline alkaloid from the twigs of Trigonostemon filipes. Synthesis of two structurally close derivatives of trigonostemine G is also reported. Key step of the syntheses involves a nucleophilic addition of 5-{[tert-butyl(dimethyl) silyl]oxy}-1H-indole to 1-formyl-β-carboline building blocks.
title: Ð Ð°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ° ÐºÐ»Ð¸ÐµÐ½ÑÑÐºÐ¾Ð³Ð¾ Ð¿ÑÐ¸Ð»Ð¾Ð¶ÐµÐ½Ð¸Ñ Ð´Ð»Ñ Ð¾Ð±Ð»Ð°ÑÐ½Ð¾Ð³Ð¾ ÑÐµÑÐ²Ð¸ÑÐ° OneDrive Ð½Ð° Ð¾ÑÐ½Ð¾Ð²Ðµ FUSE
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Developement of OneDrive client for Linux based on FUSE
Creators: name: ÐÐ¾Ð»Ð¸ÑÑÐº, ÐÐ½Ð´ÑÐµÐ¹
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2022
Subjects: onedrive
Ð¾Ð±Ð»Ð°ÑÐ½Ð¾Ðµ Ñ ÑÐ°Ð½Ð¸Ð»Ð¸ÑÐµ
linux
fuse
python
cloud storage

description: Ð¢ÐµÐ¼Ð° Ð²ÑÐ¿ÑÑÐºÐ½Ð¾Ð¹ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÑ: Â«Ð Ð°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ° ÐºÐ»Ð¸ÐµÐ½ÑÑÐºÐ¾Ð³Ð¾ Ð¿ÑÐ¸Ð»Ð¾Ð¶ÐµÐ½Ð¸Ñ Ð´Ð»Ñ Ð¾Ð±Ð»Ð°ÑÐ½Ð¾Ð³Ð¾ ÑÐµÑÐ²Ð¸ÑÐ° OneDrive Ð½Ð° Ð¾ÑÐ½Ð¾Ð²Ðµ FUSEÂ». ÐÐ°Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¿Ð¾ÑÐ²ÑÑÐµÐ½Ð° ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐºÐµ ÐºÐ»Ð¸ÐµÐ½ÑÑÐºÐ¾Ð³Ð¾ Ð¿ÑÐ¸Ð»Ð¾Ð¶ÐµÐ½Ð¸Ñ Ð´Ð»Ñ Ð¾Ð±Ð»Ð°ÑÐ½Ð¾Ð³Ð¾ ÑÐµÑÐ²Ð¸ÑÐ° Microsoft OneDrive Ð´Ð»Ñ Ð¾Ð¿ÐµÑÐ°ÑÐ¸Ð¾Ð½Ð½Ð¾Ð¹ ÑÐ¸ÑÑÐµÐ¼Ñ Linux. Ð ÑÐ°Ð¼ÐºÐ°Ñ ÑÐ°Ð±Ð¾ÑÑ Ð±ÑÐ» Ð¿ÑÐ¾Ð²ÐµÐ´ÑÐ½ Ð°Ð½Ð°Ð»Ð¸Ð· ÑÑÑÐµÑÑÐ²ÑÑÑÐ¸Ñ ÑÐµÑÐµÐ½Ð¸Ð¹. ÐÐ° Ð¾ÑÐ½Ð¾Ð²Ðµ Ð¿ÑÐ¾Ð²ÐµÐ´ÑÐ½Ð½Ð¾Ð³Ð¾ Ð°Ð½Ð°Ð»Ð¸Ð·Ð° Ð±ÑÐ»Ð¸ ÑÑÐ¾ÑÐ¼ÑÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ñ ÑÑÐµÐ±Ð¾Ð²Ð°Ð½Ð¸Ñ Ðº ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐºÐµ Ð¿ÑÐ¾ÐµÐºÑÐ°. Ð Ð°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½Ð½Ð¾Ðµ Ð¿ÑÐ¸Ð»Ð¾Ð¶ÐµÐ½Ð¸Ðµ ÑÐ°Ð·Ð´ÐµÐ»ÐµÐ½Ð¾ Ð½Ð° ÑÑÐ¸ Ð¾ÑÐ½Ð¾Ð²Ð½ÑÑ ÐºÐ¾Ð¼Ð¿Ð¾Ð½ÐµÐ½ÑÐ°: ÐÐ¸Ð±Ð»Ð¸Ð¾ÑÐµÐºÐ° Â«onedriverÂ», Ð°Ð±ÑÑÑÐ°Ð³Ð¸ÑÑÑÑÐ°Ñ ÑÐ°Ð±Ð¾ÑÑ Ñ REST Ð¸Ð½ÑÐµÑÑÐµÐ¹ÑÐ¾Ð¼ GaphAPI, ÑÐµÑÐµÐ· ÐºÐ¾ÑÐ¾ÑÑÐ¹ Ð²ÐµÐ´ÑÑÑÑ ÑÐ°Ð±Ð¾ÑÐ° Ñ ÑÐµÑÐ²Ð¸ÑÐ¾Ð¼ OneDrive;Ð¤Ð¾Ð½Ð¾Ð²ÑÐ¹ ÑÐµÑÐ²Ð¸Ñ Â«onedrivedÂ», ÐºÐ¾ÑÐ¾ÑÑÐ¹ ÑÐ¿ÑÐ°Ð²Ð»ÑÐµÑ FUSE Ð¼Ð¾Ð´ÑÐ»ÑÐ¼Ð¸ ÑÐ°Ð¹Ð»Ð¾Ð²Ð¾Ð¹ ÑÐ¸ÑÑÐµÐ¼Ñ Ð¸ Ð¿ÑÐµÐ´Ð¾ÑÑÐ°Ð²Ð»ÑÐµÑ Ð¸Ð½ÑÐµÑÑÐµÐ¹Ñ Ð²Ð·Ð°Ð¸Ð¼Ð¾Ð´ÐµÐ¹ÑÑÐ²Ð¸Ñ ÑÐµÑÐµÐ· D-Bus;ÐÐ¾Ð½ÑÐ¾Ð»ÑÐ½Ð¾Ðµ Ð¿ÑÐ¸Ð»Ð¾Ð¶ÐµÐ½Ð¸Ðµ Â«onedrivectlÂ», ÐºÐ¾ÑÐ¾ÑÐ¾Ðµ ÑÐ²Ð»ÑÐµÑÑÑ Ð¿ÑÐ¾ÑÑÑÐ¼ Ð¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°ÑÐµÐ»ÑÑÐºÐ¸Ð¼ Ð¸Ð½ÑÐµÑÑÐµÐ¹ÑÐ¾Ð¼ Ð´Ð»Ñ ÑÐ¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ñ ÑÐ¾Ð½Ð¾Ð²ÑÐ¼ ÑÐµÑÐ²Ð¸ÑÐ¾Ð¼.
description: The subject of the graduate qualification work is Â«Developement of OneDrive client for Linux based on FUSEÂ». This work describes the developemen of client application for cloud storage service OneDrive for Linux operating system. As part of the work, the existing solutions on the market were analyzed. Based on the result of the analysis project requirements were formulated. The project is divided in three parts: Library Â«onedriverÂ» that abstracts away Graph API, which is a REST API and through which the app operates with OneDrive services; Daemon Â«onedrivedÂ», which manages FUSE mounts and provides a D-Bus interface;Terminal application Â«onedrivectlÂ», which provides simple user interface for communication with the daemon.
Chemical composition of essential oils from the underground parts of Glycyrrhiza echinata L. accessions growing wild in Northern Iran
Creators: name: Firoznejhad, Mohammad
name: Abdollah Ghasemi Pirbalouti
name: Abdoosi, Vahid
name: Aliahmadi, Atousa
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biochemistry
subject: Genetics
subject: FOS: Biological 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: Ecology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified

description: Glycyrrhiza echinata L. is a perennial plant of considerable commercial importance in medicine, pharmaceuticals, cosmetics, and tobacco industries and the production of food additives as flavoring and sweetening agent. This study, variation on composition and yield of essential oil from the underground parts of five accessions of G. echinata growing wild in northern Iran was investigated. Results showed high variability for the main constituents of essential oil among accessions of G. echinata. The presence of α-pinene and myrcene in two accessions suggests that these volatiles could serve as chemotaxonomic markers and also might be considered as potentially relevant for taste. The presence of β-caryophyllene and α- caryophyllene in three accessions could be strong potential for being used in medical applications (anticancer and analgesic properties). Generally, the essential oils from G. echinata and other species could be very competitive targets for phytochemical and food studies.
Estimated performance of the TRIUMF ultracold neutron source and electric dipole moment apparatus
Creators: name: Sidhu, Steve
name: Schreyer, Wolfgang
name: Vanbergen, Sean
name: Kawasaki, Shinsuke
name: Matsumiya, Ryohei
name: Okamura, Takahiro
name: Picker, Ruediger
Publisher: name: arXiv
Year: 2022
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Searches for the permanent electric dipole moment of the neutron (nEDM) provide strong constraints on theories beyond the Standard Model of particle physics. The TUCAN collaboration is constructing a source for ultracold neutrons (UCN) and an apparatus to search for the nEDM at TRIUMF, Vancouver, Canada. In this work, we estimate that the spallation-driven UCN source based on a superfluid helium converter will provide $(1.38\pm0.02) \times 10^7$ polarized UCN at a density of $217\pm3$~UCN/cm$^3$ to a room-temperature EDM experiment per fill. With $(1.51\pm0.02) \times 10^6$ neutrons detected after the Ramsey cycle, the statistical sensitivity for an nEDM search per storage cycle will be $(1.94\pm0.06) \times 10^{-25}\,e$cm (1$σ$). The goal sensitivity of $10^{-27}\,e$cm (1$σ$) can be reached within $280\pm16$ measurement days.
description: Proceedings submitted to EPJ Web of Conferences for the Symposium on Symmetries in Subatomic Physics (SSP2022)
Ultraslow settling kinetics of frictional cohesive powders
Creators: name: Nan, Kai
name: Hoy, Robert S.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Using discrete element method simulations, we show that the settling of frictional cohesive grains under ramped-pressure compression exhibits strong history dependence and slow dynamics that are not present for grains that lack either cohesion or friction. Systems prepared by beginning with a dilute state and then ramping the pressure to a small positive value $P_{\rm final}$ over a time $τ_{\rm ramp}$ settle at packing fractions given by an inverse-logarithmic rate law, $ϕ_{\rm settled}(τ_{\rm ramp}) = ϕ_{\rm settled}(\infty) + A/[1 + B\ln(1 + τ_{\rm ramp}/τ_{\rm slow})]$. This law is analogous to the one obtained from classical tapping experiments on noncohesive grains, but crucially different in that $τ_{\rm slow}$ is set by the slow dynamics of structural void stabilization rather than the faster dynamics of bulk densification. We formulate a kinetic free-void-volume theory that predicts this $ϕ_{\rm settled}(τ_{\rm ramp})$, with $ϕ_{\rm settled}(\infty) = ϕ_{\rm ALP}$ and $A = ϕ_{\rm settled}(0) - ϕ_{\rm ALP}$, where $ϕ_{\rm ALP} \equiv .135$ is the ``adhesive loose packing'' fraction found by Liu \textit{et al.} [W.\ Liu, Y.\ Jin, S. Chen, H.\ A.\ Makse and S.\ Li, \textit{Soft Matt.} \textbf{13}, 421 (2017)].
description: Supplemental Material available upon request
Interference of surface plasmon polaritons from a "point" source
Creators: name: Ren, Xifeng
name: Liu, Aiping
name: Zou, Changling
name: Wang, Lulu
name: Cai, Yongjing
name: Sun, Fangwen
name: Guo, Guangcan
name: Guo, Guoping
Publisher: name: arXiv
Year: 2011
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The interference patterns of the surface plasmon polaritons(SPPs) on the metal surface from a "point" source are observed. These interference patterns come from the forward SPPs and the reflected one from the obstacles, such as straightedge,corner, and ring groove structure. Innovation to the previous works, a "point" SPPs source with diameter of 100 nm is generated at the freely chosen positions on Au/air interface using near field excitation method. Such a "point" source provides good enough coherence to generate obvious interference phenomenon. The constructive and destructive interference patterns of the SPPs agree well with the numerical caculation. This "point" SPPs source may be useful in the investigation of plasmonics for its high coherence, deterministic position and minimum requirement for the initial light source.
description: 11 pages,4 figures
title: ÐÑÐ¾ÐµÐºÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ Ð¸ ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ° Ð¿ÑÐ¸Ð»Ð¾Ð¶ÐµÐ½Ð¸Ñ-Ð°Ð³ÑÐµÐ³Ð°ÑÐ¾ÑÐ° Ð´Ð»Ñ Ð¿Ð¾Ð¸ÑÐºÐ° ÑÐºÐ¸Ð´Ð¾Ðº Ð½Ð° ÑÐ°Ð·Ð»Ð¸ÑÐ½ÑÐµ ÑÐ¾Ð²Ð°ÑÑ Ð¸ ÑÑÐ»ÑÐ³Ð¸
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Design and development of the application-aggregator for finding discounts on various goods and services
Creators: name: ÐÐ°Ð½ÐµÐµÐ², ÐÐµÐ¾Ð½Ð¸Ð´
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2020
Subjects: Ð¿ÑÐ¸Ð»Ð¾Ð¶ÐµÐ½Ð¸Ðµ
Ð°Ð³ÑÐµÐ³Ð°ÑÐ¾Ñ
ÑÐºÐ¸Ð´ÐºÐ¸
ios
android
application
aggregator
discounts

description: ÐÐ°Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¿Ð¾ÑÐ²ÑÑÐµÐ½Ð° Ð¿ÑÐ¾ÐµÐºÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ð¸ ÑÐµÐ°Ð»Ð¸Ð·Ð°ÑÐ¸Ð¸ Ð¼Ð¾Ð±Ð¸Ð»ÑÐ½Ð¾Ð³Ð¾ Ð¿ÑÐ¸Ð»Ð¾Ð¶ÐµÐ½Ð¸Ñ Ð´Ð»Ñ Ð°Ð³ÑÐµÐ³Ð°ÑÐ¸Ð¸ ÑÐºÐ¸Ð´Ð¾Ðº Ð½Ð° ÑÐ°Ð·Ð»Ð¸ÑÐ½ÑÐµ ÑÐ¾Ð²Ð°ÑÑ Ð¸ ÑÑÐ»ÑÐ³Ð¸. Ð Ð¿ÐµÑÐ²Ð¾Ð¹ Ð³Ð»Ð°Ð²Ðµ Ð¸ÑÑÐ»ÐµÐ´ÑÐµÑÑÑ Ð°ÐºÑÑÐ°Ð»ÑÐ½Ð¾ÑÑÑ Ð¿ÑÐ¸Ð»Ð¾Ð¶ÐµÐ½Ð¸Ð¹ Ð´Ð°Ð½Ð½Ð¾Ð³Ð¾ ÑÐ¸Ð¿Ð° Ð² ÑÐºÐ°Ð·Ð°Ð½Ð½Ð¾Ð¹ ÑÑÐµÑÐµ.ÐÑÐ¾Ð¸Ð·Ð²Ð¾Ð´Ð¸ÑÑÑ Ð¾Ð±Ð·Ð¾Ñ Ð°Ð½Ð°Ð»Ð¾Ð³Ð¾Ð² Ð¿ÑÐ¸Ð»Ð¾Ð¶ÐµÐ½Ð¸Ñ Ð¸ ÑÐ¾ÑÐ¼Ð¸ÑÑÐµÑÑÑ ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¾Ðµ Ð·Ð°Ð´Ð°Ð½Ð¸Ðµ. ÐÐ¾ Ð²ÑÐ¾ÑÐ¾Ð¹ Ð³Ð»Ð°Ð²Ðµ Ð¾Ð¿Ð¸ÑÐ°Ð½ Ð¿ÑÐ¾ÑÐµÑÑ ÑÑÐ°Ð²Ð½ÐµÐ½Ð¸Ñ Ð¸ Ð²ÑÐ±Ð¾ÑÐ° Ð°Ð²ÑÐ¾ÑÐ¾Ð¼ Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ð½Ð¾Ð¹ Ð¿Ð»Ð°ÑÑÐ¾ÑÐ¼Ñ Ð¸ ÑÐ·ÑÐºÐ¾Ð² Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ð´Ð»Ñ ÑÐµÐ°Ð»Ð¸Ð·Ð°ÑÐ¸Ð¸ Ð¿ÑÐ¾Ð´ÑÐºÑÐ°. Ð ÑÑÐµÑÑÐµÐ¹ Ð³Ð»Ð°Ð²Ðµ ÑÐµÑÑ Ð¿Ð¾Ð¹Ð´ÐµÑ Ð¾ Ð¿ÑÐ¾ÐµÐºÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ð¸ Ð¿ÑÐ¸Ð»Ð¾Ð¶ÐµÐ½Ð¸Ñ. Ð§ÐµÑÐ²ÐµÑÑÐ°Ñ Ð³Ð»Ð°Ð²Ð° Ð¿Ð¾ÑÐ²ÑÑÐµÐ½Ð° Ð¾Ð¿Ð¸ÑÐ°Ð½Ð¸Ñ Ð¿ÑÐ¾ÑÐµÑÑÐ° ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ¸ Ð¿ÑÐ¸Ð»Ð¾Ð¶ÐµÐ½Ð¸Ñ. Ð Ð¿ÑÑÐ¾Ð¹ Ð³Ð»Ð°Ð²Ðµ Ð¿ÑÐ¸Ð²Ð¾Ð´Ð¸ÑÑÑ Ð¿ÑÐ¾ÑÐµÑÑ ÑÐµÑÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ð¿ÑÐ¾Ð´ÑÐºÑÐ° Ð¸ ÐµÐ³Ð¾ Ð²Ð½ÐµÐ´ÑÐµÐ½Ð¸Ñ.
description: This work is focused onthe design and implementation of a mobile application for aggregating discounts on various goods and services. The first chapter examines the relevance of this type of application in specified area. A review of the application analogues is made,and a technical task is being formed. The second chapter describes the process of comparison and selection by the author of a software platform and programming languages for product implementation. The third chapter will focus on application design. The fourth chapter describes the application development process. The fifth chapter describes the process of product testing and introduction.
Essays on the effectiveness of environmental and urban transportation policies
Creators: name: Chen, Cheng
Publisher: name: University of British Columbia
Year: 2019

description: This dissertation is a collection of three essays that study the efficiency of policies targeting environmental and urban transportation issues. The first essay investigates a government incentive that subsidizes the purchase of electric vehicles(EVs) and asks a question of whether subsidizing public charging facility would be more cost-effective. It estimates a discrete choice model of EVs which relies on both EV characteristics and individual demographic information, using micro-level data from the California Clean Vehicle Rebate Program. Results show: (1) EVs with smaller battery capacity are more reliant on the public charging network; (2) consumers with higher income are less price sensitive. Such results support subsidizing more to public charging facility and reducing the EV purchase subsidy to the more affluent consumers. The second essay builds on the literature of road congestion and addresses the importance of schedule delay cost occurred due to uncertain traffic time. We propose the notion of a "reliability standard" that commuters use to calculate their schedule time --- the buffer time added to a commute so as to ensure being at work on time most of the time. With this tool, we conduct an extensive simulation study to gain further insights into the role of commuter composition, time cost differences, and the degree of inflexibility on optimal road tolls. While the cost of commuting time reliability is economically important, we find that the difference between a full-information road toll and a limited-information road toll is smaller than one would expect. Our study points to how future stated preference studies can be designed to elicit more meaningful information that identifies commuter heterogeneity, and in turn will lead to better designs for mobility pricing. The third essay examines the relationship between firms' voluntary disclosure in environmental performance information and their level of institutional ownership. Empirical results indicate that US S&P 500 companies with higher institutional ownership ratio are less likely to disclose to the Carbon Disclosure Project. Moreover, disclosure behavior also leads to a lower ratio of institutional ownership. This negative relationship suggests adverse selection in the disclosure decision, hence such voluntary disclosure policy might be of limited value to the public.
DESI Survey Validation Spectra Reveal an Increasing Fraction of Recently Quenched Galaxies at $z\sim1$
Creators: name: Setton, David J.
name: Dey, Biprateep
name: Khullar, Gourav
name: Bezanson, Rachel
name: Newman, Jeffrey A.
name: Aguilar, Jessica N.
name: Ahlen, Steven
name: Andrews, Brett H.
name: Brooks, David
name: de la Macorra, Axel
name: Dey, Arjun
name: Eftekharzadeh, Sarah
name: Font-Ribera, Andreu
name: Gontcho, Satya Gontcho A
name: Kremin, Anthony
name: Juneau, Stephanie
name: Landriau, Martin
name: Meisner, Aaron
name: Miquel, Ramon
name: Moustakas, John
name: Pearl, Alan
name: Prada, Francisco
name: Tarle, Gregory
name: Siudek, Malgorzata
name: Weaver, Benjamin Alan
name: Zhou, Zhimin
name: Zou, Hu
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We utilize $\sim17000$ bright Luminous Red Galaxies (LRGs) from the novel Dark Energy Spectroscopic Instrument Survey Validation spectroscopic sample, leveraging its deep ($\sim2.5$ hour/galaxy exposure time) spectra to characterize the contribution of recently quenched galaxies to the massive galaxy population at $0.41$) of our sample of recently quenched galaxies represents the largest spectroscopic sample of post-starburst galaxies at that epoch. At $0.411.2$) LRGs by measuring the fraction of stellar mass each galaxy formed in the Gyr before observation, $f_\mathrm{1 Gyr}$. Although galaxies with $f_\mathrm{1 Gyr}>0.1$ are rare at $z\sim0.4$ ($\lesssim 0.5\%$ of the population), by $z\sim0.8$ they constitute $\sim3\%$ of massive galaxies. Relaxing this threshold, we find that galaxies with $f_\mathrm{1 Gyr}>5\%$ constitute $\sim10\%$ of the massive galaxy population at $z\sim0.8$. We also identify a small but significant sample of galaxies at $z=1.1-1.3$ that formed with $f_\mathrm{1 Gyr}>50\%$, implying that they may be analogues to high-redshift quiescent galaxies that formed on similar timescales. Future analysis of this unprecedented sample promises to illuminate the physical mechanisms that drive the quenching of massive galaxies after cosmic noon.
description: Re-uploaded after acceptance to the Astrophysical Journal Letters. 14 pages, 5 figures, comments welcome!
Benchmarking the Processing of Aircraft Tracks with Triples Mode and Self-Scheduling
Creators: name: Weinert, Andrew
name: Brittain, Marc
name: Underhill, Ngaire
name: Serres, Christine
Publisher: name: Zenodo
Year: 2021

description: Presentation associated with the paper, "Benchmarking the Processing of Aircraft Tracks with Triples Mode and Self-Scheduling," presented at the 2021 IEEE High Performance Extreme Computing (HPEC) conference. Abstract As unmanned aircraft systems (UASs) continue to integrate into the U.S. National Airspace System (NAS), there is a need to quantify the risk of airborne collisions between unmanned and manned aircraft to support regulation and standards development. Developing and certifying collision avoidance systems often rely on the extensive use of Monte Carlo collision risk analysis simulations using probabilistic models of aircraft flight. To train these models, high performance computing resources are required. We've prototyped a high performance computing workflow designed and deployed on the Lincoln Laboratory Supercomputing Center to process billions of observations of aircraft. However, the prototype has various computational and storage bottlenecks that limited rapid or more comprehensive analyses and models. In response, we’ve developed a novel workflow to take advantage of various job launch and task distribution technologies to improve performance. The workflow was benchmarked using two datasets of observations of aircraft, including a new dataset focused on the environment around aerodromes. Optimizing how the workflow was parallelized drastically reduced the execution time from weeks to days.
Crotoliganfuran, a new clerodane-type furano-diterpenoid from Croton oligandrus Pierre ex Hutch
Creators: name: Fongang Fotsing Yannick Stephane
name: Amadou Dawe
name: Awantu Angelbert Fusi
name: Bankeu Kezetas Jean Jules
name: Kagho Kenou Donald Ulrich
name: Mehreen Lateef
name: Lenta Ndjakou Bruno
name: Ali, Muhammad Shaiq
name: Ngouela, Silvère Augustin
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Biotechnology
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: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Inorganic Chemistry
subject: Hematology
subject: Plant Biology
subject: 60506 Virology

description: The phytochemical investigation of the methanol extract of the bark of Croton oligandrus Pierre ex Hutch yielded a new clerodane-type diterpenoid crotoliganfuran (1) along with ten other compounds including 12-epicrotocorylifuran (2), lupeol (3), syringic acid (4), aleuritolic acid acetate (5), aleuritolic acid (6), scopoletin (7), geddic acid (8), β-sitosterol (9), vanilic acid (10) and stigmastane-3,6-dione (11). Their structures were established by spectroscopic means. The extract and all the isolates were screened for their inhibitory properties against butyrylcholinesterase and urease enzymes, respectively. The extract and compounds 1, 4 and 7 displayed the most potent urease inhibitory properties with IC50 values, 22.2, 26.7 and 28.5 µM, respectively. Compound 9 was the most active of all the tested compounds against butyrylcholinesterase enzyme with an IC50 value of 36.3 µM.
A new dimeric protoberberine alkaloid and other compounds from the tubers of Tinospora dentata
Creators: name: Sio-Hong Lam
name: Shu-Duan Jian
name: Tsong-Long Hwang
name: Po-Jen Chen
name: Hsin-Yi Hung
name: Ping-Chung Kuo
name: Tian-Shung Wu
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biochemistry
subject: Cell Biology
subject: Pharmacology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified

description: A new dimeric quaternary protoberberine alkaloid, bispalmatrubine (1), and thirteen known compounds (2-14) were purified from the tubers of Tinospora dentata. Their structures were determined by spectroscopic and spectrometric analytical methods. Among the isolates, eight compounds were examined for their in vitro anti-inflammatory potential and several tested alkaloids displayed moderate inhibitory effects of N-formyl-methionyl-leucyl-phenylalanine/cytochalasin B (fMLP/CB)-induced superoxide anion generation and elastase release.
Julichrome derivatives and gliotoxin from a soil derived Streptomyces sp.
Creators: name: Shen, Tong
name: Le-Mei Li
name: Xu, Ze-Yu
name: Wang, Yong-Dong
name: Xie, Wei-Dong
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biochemistry
subject: Cell Biology
subject: Pharmacology
subject: Biotechnology
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: Cancer

description: Six julichrome derivatives including a new monomeric julichrome named as julichrome Q10 (1), and previous reported julichrome Q6 (2), julichrome Q6.6 (4), julichrome Q3.5 (5), julichrome Q5.6 (6), julichrome Q2.3 (7), along with a diketopiperazine gliotoxin (3) were isolated from a soil derived strain Streptomyces sp. The structures of these compounds were identified by HR-ESI-MS, UV, IR and NMR methods. The isolated compounds were tested for their in vitro cytotoxicity against human hepatocarcinoma HepG-2 and SMMC-7721 cell lines, human breast cancer MCF-7 and MDA-MB-231 cell lines, and human normal heptical LO2 cell line. Gliotoxin (3) showed the most cytotoxic activity against the tested tumor cell lines, with IC50 values ranging from 0.11 to 1.45 μM. Julichrome Q6.6 (4) displayed selective cytotoxic activity against SMMC-7721, MCF-7 and MDA-MB-231 cell lines.
Orthogonal Matching Pursuit: A Brownian Motion Analysis
Creators: name: Fletcher, Alyson K.
name: Rangan, Sundeep
Publisher: name: arXiv
Year: 2011
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: A well-known analysis of Tropp and Gilbert shows that orthogonal matching pursuit (OMP) can recover a k-sparse n-dimensional real vector from 4 k log(n) noise-free linear measurements obtained through a random Gaussian measurement matrix with a probability that approaches one as n approaches infinity. This work strengthens this result by showing that a lower number of measurements, 2 k log(n - k), is in fact sufficient for asymptotic recovery. More generally, when the sparsity level satisfies kmin <= k <= kmax but is unknown, 2 kmax log(n - kmin) measurements is sufficient. Furthermore, this number of measurements is also sufficient for detection of the sparsity pattern (support) of the vector with measurement errors provided the signal-to-noise ratio (SNR) scales to infinity. The scaling 2 k log(n - k) exactly matches the number of measurements required by the more complex lasso method for signal recovery with a similar SNR scaling.
description: 11 pages, 2 figures
Revealing the spectral state transition of the Clocked Burster, GS 1826-238 with NuSTAR StrayCats
Creators: name: Yun, S. B.
name: Grefenstette, B. W.
name: Ludlam, R. M.
name: Brumback, M. C.
name: Buisson, D. J. K.
name: Mastroserio, G.
name: Pike, S. N.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present the long term analysis of GS 1826-238, a neutron star X-ray binary known as the "Clocked Burster", using data from NuSTAR StrayCats. StrayCats, a catalogue of NuSTAR stray light data, contains data from bright, off-axis X-ray sources that have not been focused by the NuSTAR optics. We obtained stray light observations of the source from 2014-2021, reduced and analyzed the data using nustar-gen-utils Python tools, demonstrating the transition of source from the "island" atoll state to a "banana" branch. We also present the lightcurve analysis of Type I X-Ray bursts from the Clocked Burster and show that the bursts from the banana/soft state are systematically shorter in durations than those from the island/hard state and have a higher burst fluence. From our analysis, we note an increase in mass accretion rate of the source, and a decrease in burst frequency with the transition.
Between metaphors, a documentary : reimagining war and violence in Colombia through picturebooks
Creators: name: De La Vega, Valeria
Publisher: name: University of British Columbia
Year: 2019

description: Colombian children have grown up in a country where there has been a constant internal conflict for more than five decades. Part of this conflict came to an end in 2016 with a signed peace agreement between the FARC-AP (Revolutionary Armed Forces of Colombia – Peoples Army) and the Colombian government. In the present, the country is going through a post-conflict phase and trying to negotiate peace with other armed groups that are still active. This reality makes children from both rural and urban areas aware of the conflict, and either they or their family members have been directly or indirectly affected by it. Picturebooks are one way that youth and their families can have conversations on the challenges of war and the consequences that come from it, provided that these texts are carefully crafted. This thesis investigates picturebooks in Colombia that depict types of violence brought about by internal conflict. Limited academic research has interrogated the role of picturebooks in this specific region and addressing this conflict. Knowledge of this area is critically important to understand the possible benefits and difficulties that such books bring to Colombian children and beyond. With this in mind—by analysing the six interviews that form the basis of a documentary film entitled Entre metáforas: re-imaginando la guerra y violencia en Colombia a partir del libro album (Between Metaphors: reimagining war and violence in Colombia through picturebooks)—I sought to answer: how are picturebooks that focus on the violence in Colombia published? How are these picturebooks received by their readers, based on the experiences of the booksellers, authors and illustrators? Finally, what are the perspectives of Colombian children’s book specialists on this subject? This thesis is both a qualitative analysis of the process of creating picturebooks about the Colombian experience from the perspective of authors, illustrators, and editors, as well as an act of research creation, as the documentary film provides an alternate entry to this knowledge for diverse stakeholders, including educators, creative professionals, and scholars of children’s literature.
The first spectroscopic verification of an extragalactic classical chemically peculiar star
Creators: name: Paunzen, E.
name: Netopil, M.
name: Bord, D. J.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present the first spectroscopic verification of a bona fide chemically peculiar (CP) star in the Large Magellanic Cloud. CP stars reside on the upper main sequence and are characterized by strong global stellar magnetic fields with a predominant dipole component oriented at random with respect to the stellar rotation axis and displaced from the star's centre. Overabundances with respect to the Sun for heavy elements such as silicon, chromium, strontium and europium are also a common phenomenon. These objects are excellent astrophysical laboratories by which to investigate many of the processes connected with star formation and evolution. Several studies comparing the incidence of CP stars in the Large Magellanic Cloud with that of the Milky Way have been published. These investigations are based on the photometric detection of CP stars via the Delta a system which has been tested and calibrated for objects in the Milky Way. From our spectroscopic observations made at Las Campanas Observatory, we are able to confirm one classical B8 Si star among the photometric sample, as well as one early B-type emission-line star which was also initially detected by its significantly deviating Delta a value. We conclude that classical extragalactic CP stars do exist and that the photometric Delta a system is able to detect them in an efficient way.
description: 4 pages, 2 figures, accepted by MNRAS
Naphto-Γ-pyrones from the marine-derived fungus Aspergillus foetidus
Creators: name: Antonov, Alexander S.
name: Leshchenko, Elena V.
name: Zhuravleva, Olesya I.
name: Dyshlovoy, Sergey A.
name: Amsberg, Gunhild Von
name: Popov, Roman S.
name: Denisenko, Vladimir A.
name: Kirichuk, Natalya N.
name: Afiyatullov, Shamil Sh.
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Pharmacology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Cancer

description: Nine naphto-γ-pyrones rubrofusarine B (1), TMC 256 A1 (2), fansecinones A (3) and B (4), aurasperones A (5), B (6) and F (7), dianhydro-aurasperone C (8) and asperpyrone B (9) were isolated from the marine-derived fungus Aspergillus foetidus KMM 4694. Their structures were established based on spectroscopic methods. The effect of the substances on viability and colony formation of human drug-resistant prostate cancer 22Rv1 cell was evaluated.
Probing Minimal Grand Unification through Gravitational Waves, Proton Decay, and Fermion Masses
Creators: name: Saad, Shaikh
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Motivated by the direct discovery of gravitational waves (GWs) from black holes and neutron stars, there is a growing interest in investigating GWs from other sources. Among them, GWs from cosmic strings are particularly fascinating since they naturally appear in a large class of grand unified theories (GUTs). Remarkably, a series of pulsar-timing arrays (PTAs) might have already observed GWs in the nHz regime, hinting towards forming a cosmic string network in the early universe, which could originate from phase transition associated with the seesaw scale emerging from GUT. In this work, we show that if these observations from PTAs are confirmed, GWs from cosmic strings, when combined with fermion masses, gauge coupling unification, and proton decay constraints, the parameter space of the minimal SO(10) GUT becomes exceedingly restrictive. The proposed minimal model is highly predictive and will be fully tested in a number of upcoming gravitational wave observatories.
description: 31 pages + references. Comments are welcome. Version accepted in JHEP (to appear)
Dynamic coupling between the LID and NMP domain motions in the catalytic conversion of ATP and AMP to ADP by adenylate kinase
Creators: name: Jana, Biman
name: Adkar, Bharat V.
name: Biswas, Rajib
name: Bagchi, Biman
Publisher: name: arXiv
Year: 2011
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: The catalytic conversion of ATP and AMP to ADP by adenylate kinase (ADK) involves large amplitude, ligand induced domain motions, involving the opening and the closing of LID and NMP domains, during the repeated catalytic cycle. We discover and analyze an interesting dynamical coupling between the motions of the two domains during the opening, using large scale atomistic molecular dynamics trajectory analysis, covariance analysis and multi-dimensional free energy calculations with explicit water. Initially, the LID domain must open by a certain amount before the NMP domain can begin to open. Dynamical correlation map shows interesting cross-peak between LID and NMP domain which suggests the presence of correlated motion between them. This is also reflected in our calculated two dimensional free energy surface contour diagram which has an interesting elliptic shape, revealing a strong correlation between the opening of the LID domain and that of the NMP domain. Our free energy surface of the LID domain motion is rugged due to interaction with water and the signature of ruggedness is evident in the observed RMSD variation and its fluctuation time correlation functions. We develop a correlated dynamical disorder type theoretical model to explain the observed dynamic coupling between the motions of the two domains in ADK. Our model correctly reproduces several features of the cross-correlation observed in simulations.
description: 34 pages, 9 figures
Microwave response of type-II superconductors at weak pinning
Creators: name: Pashinsky, B. V.
name: Feigel'man, M. V.
name: Andreev, A. V.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Theory of linear microwave response of thin films of type-II superconductors in the mixed state is developed taking into account random spatial fluctuations of the parameters of the system, such as the order parameter, diffusion coefficient, or film thickness. In the regime of collective pinning the microwave response of the system exhibits strong frequency dispersion, arising from nonequilibrium vortex core quasiparticles. The corresponding contribution to the ac conductivity is controlled by the inelastic relaxation time, and may exceed the usual Bardeen-Stephen conductivity. It is caused by the Debye-type inelastic relaxation. Debye mechanism of microwave losses may be responsible for strong effects of electromagnetic noise upon dc conductivity in the mixed state at low temperatures.
description: 5 pages
Volatile composition, antibacterial and antioxidant activities of artemisia tournefortiana Reichb. from Kashmir, India
Creators: name: Mahpara Qadir
name: Maurya, Antim Kumar
name: Vijai Kant Agnihotri
name: Wajaht A. Shah
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biochemistry
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Pharmacology
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: Ecology
subject: 69999 Biological Sciences not elsewhere classified

description: The importance of the present study is to find out the phytochemical profile of essential oil (EO) of Artemisia tournefortiana Reichb. and its biological evaluation. Nineteen volatile constituents were identified from EO representing 93.47% of total oil composition. Oxygenated monoterpenes (54.46%) were found to be dominant over other class of compounds. cis-spiroether (47.66%), Z-β-farnesene (22.83%), trans-nerolidol (3.89%) and camphor (3.80%) were found to be the major constituents. cis-spiroether is first time identified in this region. Antibacterial effects were observed against both gram-positive and gram-negative bacteria with maximum zone of inhibition (32 mm) against Staphylococcus aureus and minimum inhibitory concentration (MIC) of all tested strains were found in the range of 1.6–3.4 µg/mL. Hence the antimicrobial effect of this plant EO obtained from the natural source could be utilised in order to overcome the problem of microbial drug resistance. The EO showed moderate antioxidant effect through DPPH assay with IC50 value of 56.2 µg/mL. The significant antioxidant activity can be attributed to the presence of various conjugated secondary metabolites, phenolics and hydroxyl group bearing constituents present in the essential oil.
Exploring the Connection between Helioseismic Travel Time Anomalies and the Emergence of Large Active Regions during Solar Cycle 24
Creators: name: Stefan, John
name: Kosovichev, Alexander
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We investigate deviations in the mean phase travel time of acoustic waves preceding the emergence of 46 large active regions observed by the Helioseismic and Magnetic Imager (HMI). In our investigation, we consider two different procedures for obtaining the mean phase travel time, by minimizing the difference between cross-correlations and a reference, as well as the Gabor wavelet fitting procedure. We cross-correlate the time series of mean phase travel time deviations with the surface magnetic field and determine the peak correlation time lag. We also compute the perturbation index--the area integrated mean phase travel time deviations exceeding quiet sun thresholds--and compare the time of peak perturbation index with the correlation time lag. We find that the lag times derived from the difference minimization procedure precede the flux emergence for 36 of the 46 active regions, and that this lag time has a noticeable correlation with the maximum flux rate. However, only 28 of the active regions have peak perturbation index times in the range of 24 to 48 hours prior to the flux emergence. Additionally, we examine the relationship between properties of the emerged active regions and the strength of helioseismic signals prior to their emergence.
Bioactive benzoquinones content variability in red-berry and white-berry varieties of Ardisia crenata Sims. and assessment of cytotoxic activity
Creators: name: Podolak, Irma
name: Mynarski, Adam
name: Wróbel, Dagmara
name: Grabowska, Karolina
name: Galanty, Agnieszka
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biochemistry
subject: Physiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Developmental Biology
subject: Cancer
subject: Plant Biology

description: Ardisia crenata Sims (Myrsinaceae) occurs in two varieties differing in the fruit color, the red berries being common while the white ones are rare. The roots of red-berried A. crenata are a valued TCM product which contains bioactive benzoquinones such as embelin and rapanone. In this study we compared their profiles in different organs of the plant to provide an insight in the pattern of their accumulation within the two varieties. Moreover, cytotoxic activity against human melanoma and prostate cancer cells was evaluated. Quantitative HPLC revealed that the white-berried variety differs profoundly in the content of rapanone, with its total level of 606.5 mg/100 g d.w., as compared to 16.2 mg/100 g d.w. in A. crenata ‘red’. Embelin was less distributed and found in minor amounts in both varieties. This is the first report on rapanone content in various parts of Ardisia crenata and on benzoquinones in the white-berried variety.
Scalar and Pseudoscalar Correlators in Yang-Mills Theory
Creators: name: Vuorinen, Aleksi
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Correlation functions of the FF and F\tilde{F} operators in hot SU(3) Yang-Mills theory have recently been studied both on the lattice and in perturbation theory, and the results subsequently compared to the strong coupling limit of large-N_c N=4 Super Yang-Mills theory, available through the AdS/CFT correspondence. Here, we review the perturbative calculations, covering both Euclidean spatial correlators and the UV limit of spectral densities, and comment on the emerging physical picture as well as on possible extensions of the present studies.
description: 3 pages, 2 figures. To appear in the proceedings of The IX International Conference on Quark Confinement and the Hadron Spectrum, Madrid, Spain, 30 August - 3 September 2010