cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Turbulent magnetic fields in the quiet Sun: implications of Hinode observations and small-scale dynamo simulations
Creators: name: Graham, Jonathan Pietarila
name: Danilovic, Sanja
name: Schuessler, Manfred
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Using turbulent MHD simulations (magnetic Reynolds numbers up to 8000) and Hinode observations, we study effects of turbulence on measuring the solar magnetic field outside active regions. Firstly, from synthetic Stokes V profiles for the FeI lines at 630.1 and 630.2 nm, we show that a peaked probability distribution function (PDF) for observationally-derived field estimates is consistent with a monotonic PDF for actual vertical field strengths. Hence, the prevalence of weak fields is greater than would be naively inferred from observations. Secondly, we employ the fractal self-similar geometry of the turbulent solar magnetic field to derive two estimates (numerical and observational) of the true mean vertical unsigned flux density. We also find observational evidence that the scales of magnetic structuring in the photosphere extend at least down to an order of magnitude smaller than 200 km: the self-similar power-law scaling in the signed measure from a Hinode magnetogram ranges (over two decades in length scales and including the granulation scale) down to the 200 km resolution limit. From the self-similar scaling, we determine a lower bound for the true quiet-Sun mean vertical unsigned flux density of ~50 G. This is consistent with our numerically-based estimates that 80% or more of the vertical unsigned flux should be invisible to Stokes-V observations at a resolution of 200 km owing to the cancellation of signal from opposite magnetic polarities. Our estimates significantly reduce the order-of-magnitude discrepancy between Zeeman- and Hanle-based estimates.
description: 26 pages, 9 figures
BANGLADESH FAMINE AT 1974 AND EFFECTS OF CHANGING PAPER MONEY FROM 1947
Creators: name: MD. ABDULLAH YUSUF IMAM
name: Mr. Prodip Kumar Biswas
Publisher: name: figshare
Year: 2020
Subjects: subject: Uncategorized
subject: 140206 Experimental Economics
subject: FOS: Economics and business

description: After thePartition of Bengal in 1947, inEast Bengal, which later became the Eastern Wing ofPakistan unionand was renamed toEast Pakistanin 1956 to 16thDecember 1971. During the 1960s the State Bank of Pakistan had been introducing a new series of bank notes that carried equal amounts of Urdu and Bengali text. The newly independent Bangladesh did not find an international community with a helping hand in its moments of trial. There was a famine and was estimated to have caused the deaths of about 10 million people. This research papers describes that famine by taking into account totally on the basis of market policy of Paper Money and Coins.
title: ÐÑÐµÐ½ÐºÐ° ÑÑÑÐµÐºÑÐ¸Ð²Ð½Ð¾ÑÑÐ¸ Ð¸Ð¼Ð¿Ð¾ÑÑÐ½Ð¾Ð¹ Ð´ÐµÑÑÐµÐ»ÑÐ½Ð¾ÑÑÐ¸ Ð¿ÑÐµÐ´Ð¿ÑÐ¸ÑÑÐ¸Ñ Ð¾Ð¿ÑÐ¾Ð²Ð¾Ð¹ ÑÐ¾ÑÐ³Ð¾Ð²Ð»Ð¸
title: Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÑÐºÐ°Ñ ÑÐ°Ð±Ð¾ÑÐ°
titleType: Subtitle
Creators: name: ÐÐ²Ð´Ð¾ÐºÐ¸Ð¼Ð¾Ð²Ð°, ÐÐ°ÑÐ¸Ñ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: 2017
Subjects: Ð¸Ð¼Ð¿Ð¾ÑÑÐ½Ð°Ñ Ð´ÐµÑÑÐµÐ»ÑÐ½Ð¾ÑÑÑ
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description: ÐÐ±ÑÐµÐºÑÐ¾Ð¼ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ ÑÐ²Ð»ÑÐµÑÑÑ ÐÐÐ Â«Ð¨Ð²ÐµÐ¹ÑÐ°ÑÑÐºÐ¸Ðµ ÑÐµÑÐ½Ð¾Ð»Ð¾Ð³Ð¸Ð¸ Ð¾ÐºÑÐ°ÑÐºÐ¸Â». Ð¦ÐµÐ»Ñ Ð´Ð°Ð½Ð½Ð¾Ð¹ Ð²ÑÐ¿ÑÑÐºÐ½Ð¾Ð¹ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÑ - ÑÐ¾Ð·Ð´Ð°Ð½Ð¸Ðµ ÐºÐ¾Ð¼Ð¿Ð»ÐµÐºÑÐ° Ð¼ÐµÑÐ¾Ð¿ÑÐ¸ÑÑÐ¸Ð¹ Ð¿Ð¾ Ð¿Ð¾Ð²ÑÑÐµÐ½Ð¸Ñ ÑÑÑÐµÐºÑÐ¸Ð²Ð½Ð¾ÑÑÐ¸ Ð¸Ð¼Ð¿Ð¾ÑÑÐ½Ð¾Ð¹ Ð´ÐµÑÑÐµÐ»ÑÐ½Ð¾ÑÑÐ¸ ÐÐÐ Â«Ð¨Ð²ÐµÐ¹ÑÐ°ÑÑÐºÐ¸Ðµ ÑÐµÑÐ½Ð¾Ð»Ð¾Ð³Ð¸Ð¸ Ð¾ÐºÑÐ°ÑÐºÐ¸Â». ÐÐ° Ð¾ÑÐ½Ð¾Ð²Ðµ Ð¿Ð¾Ð»ÑÑÐµÐ½Ð½ÑÑ Ð´Ð°Ð½Ð½ÑÑ, Ð¿ÑÐ¾Ð²ÐµÐ´ÐµÐ½Ñ PEST, SWOT Ð¸ ÐºÐ¾Ð½ÐºÑÑÐµÐ½ÑÐ½ÑÐ¹ Ð°Ð½Ð°Ð»Ð¸Ð·Ñ, Ð±Ð»Ð°Ð³Ð¾Ð´Ð°ÑÑ ÐºÐ¾ÑÐ¾ÑÑÐ¼ Ð¿Ð¾Ð»ÑÑÐµÐ½Ñ Ð¾ÑÐµÐ½ÐºÐ¸ Ð²Ð½ÐµÑÐ½ÐµÐ¹ ÑÑÐµÐ´Ñ ÐºÐ¾Ð¼Ð¿Ð°Ð½Ð¸Ð¸, Ð° ÑÐ°ÐºÐ¶Ðµ ÑÐ¸Ð»ÑÐ½ÑÐµ Ð¸ ÑÐ»Ð°Ð±ÑÐµ ÑÑÐ¾ÑÐ¾Ð½Ñ ÐºÐ¾Ð½ÐºÑÑÐµÐ½ÑÐ¾Ð². ÐÑÐ¾Ð²ÐµÐ´ÐµÐ½ ÐºÐ¾Ð¼Ð¿Ð»ÐµÐºÑÐ½ÑÐ¹ Ð°Ð½Ð°Ð»Ð¸Ð· ÑÐºÐ¾Ð½Ð¾Ð¼Ð¸ÑÐµÑÐºÐ¸Ñ Ð¿Ð¾ÐºÐ°Ð·Ð°ÑÐµÐ»ÐµÐ¹ ÐºÐ¾Ð¼Ð¿Ð°Ð½Ð¸Ð¸, ÐºÐ¾ÑÐ¾ÑÑÐ¹ Ð²ÑÑÐ²Ð¸Ð», ÑÑÐ¾ Ð¿ÑÐµÐ´Ð¿ÑÐ¸ÑÑÐ¸Ðµ ÑÐ°Ð±Ð¾ÑÐ°ÐµÑ ÑÑÑÐµÐºÑÐ¸Ð²Ð½Ð¾, Ð½Ð°ÑÐ°ÑÐ¸Ð²Ð°ÐµÑ Ð¾Ð±ÑÐµÐ¼Ñ ÑÐµÐ°Ð»Ð¸Ð·ÑÐµÐ¼Ð¾Ð¹ Ð¿ÑÐ¾Ð´ÑÐºÑÐ¸Ð¸ Ð·Ð° ÑÑÐµÑ Ð²Ð²ÐµÐ´ÐµÐ½Ð¸Ñ Ð½Ð° ÑÑÐ½Ð¾Ðº Ð½Ð¾Ð²ÑÑ Ð¿ÑÐ¾Ð´ÑÐºÑÐ¾Ð² Ð¸ Ð¿ÑÐ¸Ð²Ð»ÐµÑÐµÐ½Ð¸Ñ Ð½Ð¾Ð²ÑÑ ÐºÐ»Ð¸ÐµÐ½ÑÐ¾Ð². Ð ÑÐ°Ð±Ð¾ÑÐµ Ð´Ð°Ð½Ñ ÑÐµÐºÐ¾Ð¼ÐµÐ½Ð´Ð°ÑÐ¸Ð¸, ÐºÐ¾ÑÐ¾ÑÑÐµ Ð¿Ð¾Ð»Ð¾Ð¶Ð¸ÑÐµÐ»ÑÐ½Ð¾ Ð¿Ð¾Ð²Ð»Ð¸ÑÑÑ Ð½Ð° Ð¾Ð±ÑÐµÐ¼Ñ Ð·Ð°ÐºÐ°Ð·Ð¾Ð² Ð¸ Ð±ÑÐ´ÑÑ ÑÐ¿Ð¾ÑÐ¾Ð±ÑÑÐ²Ð¾Ð²Ð°ÑÑ Ð¿Ð¾Ð²ÑÑÐµÐ½Ð¸Ñ ÑÑÑÐµÐºÑÐ¸Ð²Ð½Ð¾ÑÑÐ¸ Ð¸Ð¼Ð¿Ð¾ÑÑÐ½Ð¾Ð¹ Ð´ÐµÑÑÐµÐ»ÑÐ½Ð¾ÑÑÐ¸ ÐÐÐ Â«Ð¨Ð²ÐµÐ¹ÑÐ°ÑÑÐºÐ¸Ðµ ÑÐµÑÐ½Ð¾Ð»Ð¾Ð³Ð¸Ð¸ Ð¾ÐºÑÐ°ÑÐºÐ¸Â».
Characterizing sensory integration mechanisms in open- and closed-loop models of human balance control
Creators: name: Missen, Kyle James
Publisher: name: University of British Columbia
Year: 2024

description: Human standing balance is functionally organized as a closed-loop feedback system, which enhances system stability in response to perturbations and sensory deficits but complicates the identification of underlying mechanisms. Mechanistic models of balance control represent hypotheses about these mechanisms that require testing and validation. This thesis aimed to address uncertainties within the literature concerning sensory feedback mechanisms and their representation in mechanistic models of balance control. Studies 1 and 2 investigated the properties of a sensory torque feedback mechanism believed to reduce the effort required to stand and play a role in body alignment with gravity. Study 1 used an experimental and simulated forced lean paradigm to test behavioural predictions of this mechanism. In Study 2, multiple balance control models containing various physiological interpretations of slow dynamics were fit to body sway responses to long-duration support surface tilts. These studies provide experimental evidence for a torque feedback mechanism contributing to upright standing balance. Study 3 investigated the velocity dependence of the sensory reweighting mechanism. Support surface tilt sequences were designed with different amplitudes while keeping velocities identical (and vice versa). Estimates of the relative sensory contributions to balance control were obtained from experimental body sway responses to fit a sensory reweighting model. Sensory contributions to balance control varied as a function of tilt stimulus velocity rather than stimulus amplitude, suggesting that the mechanism underlying reweighting is based on velocity cues. Studies 4 and 5 investigated standing behaviour in an artificial open-loop system. Specifically, Study 4 examined whether a simple linear feedback model could account for standing behaviour observed when the body is artificially immobilized. Based on model predictions from Study 4, Study 5 investigated the effect of altered sensory feedback on standing behaviour during artificial immobilization. These studies indicate that behaviour in an artificial open-loop system cannot be fully explained by a simple linear feedback model. This thesis provides novel insights into the sensorimotor control mechanisms of the human balance system. These insights can contribute to advancements in developing and refining mechanistic balance control models and robotics, which will ultimately improve strategies for identifying and rehabilitating balance deficits.
title: ÐÐ½ÑÐ¾ÑÐ¼Ð°ÑÐ¸Ð¾Ð½Ð½Ð¾-Ð°Ð½Ð°Ð»Ð¸ÑÐ¸ÑÐµÑÐºÐ¾Ðµ ÑÐ¾Ð¿ÑÐ¾Ð²Ð¾Ð¶Ð´ÐµÐ½Ð¸Ðµ e-commerce (Ð½Ð° Ð¿ÑÐ¸Ð¼ÐµÑÐµ Ð°ÑÐºÑÐ¸Ð¾Ð½Ð° Ð¿Ð¾ ÑÐ°Ð·Ð¼ÐµÑÐµÐ½Ð¸Ñ Ð¼Ð°Ð³Ð°Ð·Ð¸Ð½Ð¾Ð² Ð½Ð° ÑÐ¾ÑÐ³Ð¾Ð²Ð¾Ð¹ Ð¿Ð»Ð¾ÑÐ°Ð´ÐºÐµ)
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
Creators: name: ÐÐµÑÐµÐ²ÐµÑÐ·ÐµÐ²Ð°, ÐÐ½Ð°ÑÑÐ°ÑÐ¸Ñ
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: 2018
Subjects: ÐÐ½ÑÐµÑÐ½ÐµÑ
ÑÐ»ÐµÐºÑÑÐ¾Ð½Ð½Ð°Ñ ÐºÐ¾Ð¼Ð¼ÐµÑÑÐ¸Ñ
ÑÐ¾ÑÐ³Ð¾Ð²Ð»Ñ

description: ÐÐ±ÑÐµÐºÑÐ¾Ð¼ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ ÑÐ²Ð»ÑÐµÑÑÑ ÐÐÐ Â«Ð¯Ð½Ð´ÐµÐºÑ ÐÐ°ÑÐºÐµÑ.ÐÐ°Ð±Â». Ð¦ÐµÐ»ÑÑ Ð²ÑÐ¿ÑÑÐºÐ½Ð¾Ð¹ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÑ ÑÐ²Ð»ÑÐµÑÑÑ ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ° Ð¸Ð½ÑÐ¾ÑÐ¼Ð°ÑÐ¸Ð¾Ð½Ð½Ð¾-Ð°Ð½Ð°Ð»Ð¸ÑÐ¸ÑÐµÑÐºÐ¾Ð³Ð¾ ÑÐ¾Ð¿ÑÐ¾Ð²Ð¾Ð¶Ð´ÐµÐ½Ð¸Ñ Ð¼ÐµÑÐ°Ð½Ð¸Ð·Ð¼Ð° ÑÐ°Ð·Ð¼ÐµÑÐµÐ½Ð¸Ñ ÑÐ¾ÑÐ³Ð¾Ð²ÑÑ Ð¿ÑÐµÐ´Ð»Ð¾Ð¶ÐµÐ½Ð¸Ð¹ Ð¼Ð°Ð³Ð°Ð·Ð¸Ð½Ð¾Ð² Ð½Ð° Ð¿Ð»Ð¾ÑÐ°Ð´ÐºÐµ Ð² Ð²Ð¸Ð´Ðµ Ð°ÑÐºÑÐ¸Ð¾Ð½Ð°. ÐÐ° Ð¾ÑÐ½Ð¾Ð²Ðµ Ð°Ð½Ð°Ð»Ð¸Ð·Ð° Ð´ÐµÑÑÐµÐ»ÑÐ½Ð¾ÑÑÐ¸ Ð¿Ð»Ð°ÑÑÐ¾ÑÐ¼Ñ Â«Ð¯Ð½Ð´ÐµÐºÑ.ÐÐ°ÑÐºÐµÑÂ» Ð±ÑÐ»Ð¸ Ð¾Ð¿ÑÐµÐ´ÐµÐ»ÐµÐ½Ñ Ð¾ÑÐ½Ð¾Ð²Ð½ÑÐµ Ð¿ÑÐ¾Ð±Ð»ÐµÐ¼Ñ, ÑÐµÑÐµÐ½Ð¸Ñ ÐºÐ¾ÑÐ¾ÑÑÑ Ð¿Ð¾ÑÐ²ÑÑÐµÐ½Ð° Ð¼Ð°Ð³Ð¸ÑÑÐµÑÑÐºÐ°Ñ Ð´Ð¸ÑÑÐµÑÑÐ°ÑÐ¸Ñ. ÐÐ¾ Ð¸ÑÐ¾Ð³Ð°Ð¼ Ð¸Ð·ÑÑÐµÐ½Ð¸Ñ Ð¿ÑÐ¸Ð¼ÐµÐ½ÐµÐ½Ð¸Ñ Ð¼ÐµÑÐ°Ð½Ð¸Ð·Ð¼Ð° Ð°ÑÐºÑÐ¸Ð¾Ð½Ð¾Ð² Ð² Ð¿Ð¾ÑÐ¾Ð¶Ð¸Ñ Ð¾Ð±Ð»Ð°ÑÑÑÑ, Ð° Ð¸Ð¼ÐµÐ½Ð½Ð¾ Ð½Ð° ÑÐµÐºÐ»Ð°Ð¼Ð½ÑÑ Ð¿Ð»Ð¾ÑÐ°Ð´ÐºÐ°Ñ, Ð±ÑÐ»Ð¸ Ð²ÑÐ±ÑÐ°Ð½Ñ Ð´Ð²Ðµ Ð¿Ð¾Ð´ÑÐ¾Ð´ÑÑÐ¸Ðµ Ð¼Ð¾Ð´ÐµÐ»Ð¸ Ð°ÑÐºÑÐ¸Ð¾Ð½Ð° â GSP (Ð¾Ð±Ð¾Ð±ÑÑÐ½Ð½ÑÐ¹ Ð°ÑÐºÑÐ¸Ð¾Ð½ Ð²ÑÐ¾ÑÐ¾Ð¹ ÑÐµÐ½Ñ) Ð¸ VCG-Ð°ÑÐºÑÐ¸Ð¾Ð½. Ð¡Ð¾Ð·Ð´Ð°Ð½Ð° Ð¸ Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ð½Ð¾ ÑÐµÐ°Ð»Ð¸Ð·Ð¾Ð²Ð°Ð½Ð° Ð¸Ð¼Ð¸ÑÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ Ð¼Ð¾Ð´ÐµÐ»Ñ, Ð¾ÑÑÐ°Ð¶Ð°ÑÑÐ°Ñ Ð¿Ð¾ÑÐ²Ð»ÐµÐ½Ð¸Ðµ Ð¸ ÑÐ°Ð½Ð¶Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ ÑÐ¾Ð²Ð°ÑÐ½ÑÑ Ð¿ÑÐµÐ´Ð»Ð¾Ð¶ÐµÐ½Ð¸Ð¹ Ð¿ÑÐ¸ Ð¾ÑÐºÑÑÑÐ¸Ð¸ ÑÐ°Ð¹ÑÐ° Ð¿Ð¾ÐºÑÐ¿Ð°ÑÐµÐ»ÐµÐ¼ Ð¸ Ð¾Ð¿Ð»Ð°ÑÑ Ð¿Ð¾ ÑÐµÐ»ÐµÐ²Ð¾Ð¼Ñ Ð´ÐµÐ¹ÑÑÐ²Ð¸Ñ (Ð² Ð´Ð°Ð½Ð½Ð¾Ð¼ ÑÐ»ÑÑÐ°Ðµ â Ð¿ÑÐ¸ Ð¿ÐµÑÐµÑÐ¾Ð´Ðµ Ð½Ð° ÑÐ°Ð¹Ñ Ð¼Ð°Ð³Ð°Ð·Ð¸Ð½Ð° Ð¿Ð¾ ÑÑÑÐ»ÐºÐµ). ÐÐ° Ð¾ÑÐ½Ð¾Ð²Ðµ Ð°Ð½Ð°Ð»Ð¸Ð·Ð° ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÐ¾Ð² Ð¸Ð¼Ð¸ÑÐ°ÑÐ¸Ð¾Ð½Ð½Ð¾Ð³Ð¾ Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ VCG-Ð°ÑÐºÑÐ¸Ð¾Ð½ Ð¿ÑÐ¸Ð·Ð½Ð°Ð½ Ð½Ð°Ð¸Ð±Ð¾Ð»ÐµÐµ Ð²ÑÐ³Ð¾Ð´Ð½ÑÐ¼ Ñ ÑÐ¾ÑÐºÐ¸ Ð·ÑÐµÐ½Ð¸Ñ Ð¿Ð»Ð°ÑÑÐ¾ÑÐ¼Ñ. ÐÑÐ³Ð¾Ð´Ð° Ð·Ð°ÐºÐ»ÑÑÐ°ÐµÑÑÑ Ð½Ðµ ÑÐ¾Ð»ÑÐºÐ¾ Ð² Ð¿Ð¾ÑÐµÐ½ÑÐ¸Ð°Ð»ÑÐ½Ð¾Ð¼ ÑÐ¾ÑÑÐµ Ð²ÑÑÑÑÐºÐ¸, Ð½Ð¾ Ð¸ Ð² ÑÐ¾Ð¼, ÑÑÐ¾ ÑÐ°ÐºÐ°Ñ Ð¼Ð¾Ð´ÐµÐ»Ñ ÑÐ²Ð»ÑÐµÑÑÑ Ð½Ð°Ð¸Ð±Ð¾Ð»ÐµÐµ Ð¿Ð¾Ð´ÑÐ¾Ð´ÑÑÐµÐ¹ Ð´Ð»Ñ Ð¼Ð½Ð¾Ð³Ð¾ÑÐ¾Ð²Ð°ÑÐ½Ð¾Ð³Ð¾ Ð°ÑÐºÑÐ¸Ð¾Ð½Ð° Ð¸ ÑÑÐ¸Ð¼ÑÐ»Ð¸ÑÑÐµÑ Ð¸Ð³ÑÐ¾ÐºÐ¾Ð² Ð¾ÑÑÐ°Ð¶Ð°ÑÑ ÑÐµÐ°Ð»ÑÐ½ÑÑ ÑÐµÐ½Ð½Ð¾ÑÑÑ Ð¾Ð±ÑÐµÐºÑÐ° Ð°ÑÐºÑÐ¸Ð¾Ð½Ð° Ð±ÐµÐ· Ð·Ð°Ð²ÑÑÐµÐ½Ð¸Ñ ÑÑÐ°Ð²Ð¾Ðº. Ð Ð°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½ Ð¿Ð»Ð°Ð½ Ð¿Ð¾ Ð¿ÐµÑÐµÑÐ¾Ð´Ñ Ðº Ð½Ð¾Ð²Ð¾Ð¹ Ð¼Ð¾Ð´ÐµÐ»Ð¸ Ð°ÑÐºÑÐ¸Ð¾Ð½Ð°, Ð¿ÑÐ¸Ð·Ð²Ð°Ð½Ð½ÑÐ¹ ÑÐµÑÐ¸ÑÑ Ð¾ÑÑÐ°Ð²ÑÐ¸ÐµÑÑ Ð¿Ð¾ÑÐ»Ðµ Ð²ÑÐ±Ð¾ÑÐ° Ð¼Ð¾Ð´ÐµÐ»Ð¸ Ð¿ÑÐ¾Ð±Ð»ÐµÐ¼Ñ.
title: Ð Ð°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ¸ ÑÐµÐºÐ»Ð°Ð¼Ð½Ð¾Ð¹ ÐºÐ°Ð¼Ð¿Ð°Ð½Ð¸Ð¸ Ð² ÑÐµÑÐ¸ ÐÐ½ÑÐµÑÐ½ÐµÑ (Ð½Ð° Ð¿ÑÐ¸Ð¼ÐµÑÐµ ÐÐÐ Â«ÐÐÐÐÐ¢Ð­ÐÐ¡-ÐÐ°ÑÐºÐ°Ð´Â»)
title: Ð¼Ð°Ð³Ð¸ÑÑÐµÑÑÐºÐ°Ñ Ð´Ð¸ÑÑÐµÑÑÐ°ÑÐ¸Ñ
titleType: Subtitle
Creators: name: ÐÐ¸ÑÐ¿Ð¸ÑÐµÐ²Ð°, ÐÐ°ÑÐ¸Ñ
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: 2016
Subjects: ÑÐµÐºÐ»Ð°Ð¼Ð½Ð°Ñ Ð´ÐµÑÑÐµÐ»ÑÐ½Ð¾ÑÑÑ
ÑÐµÐºÐ»Ð°Ð¼Ð½Ð°Ñ ÐºÐ°Ð¼Ð¿Ð°Ð½Ð¸Ñ Ð² ÐÐ½ÑÐµÑÐ½ÐµÑÐµ
ÐºÐ¾Ð½ÑÐµÐºÑÑÐ½Ð°Ñ ÑÐµÐºÐ»Ð°Ð¼Ð°
SMM

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Forming Planetesimals in Solar and Extrasolar Nebulae
Creators: name: Chiang, E.
name: Youdin, A.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Planets are built from planetesimals: solids larger than a kilometer which grow by colliding pairwise. Planetesimals themselves are unlikely to form by two-body collisions; sub-km objects have gravitational fields individually too weak, and electrostatic attraction is too feeble for growth beyond a few cm. We review the possibility that planetesimals form when self-gravity brings together vast ensembles of small particles. Even when self-gravity is weak, aerodynamic processes can accumulate solids relative to gas, paving the way for gravitational collapse. Particles pile up as they drift radially inward. Gas turbulence stirs particles, but can also seed collapse by clumping them. While the feedback of solids on gas triggers vertical shear instabilities that obstruct self-gravity, this same feedback triggers streaming instabilities that strongly concentrate particles. Numerical simulations find that solids 10-100 cm in size gravitationally collapse in turbulent disks. We outline areas for progress, including the possibility that still smaller objects self-gravitate.
description: To appear in Annual Reviews. This review is intended to be both current and pedagogical. Incorporates suggestions from the community; further comments welcome. v2: Single-spaced
Promoting Democratic and Intercultural Competences in the Primary School Context: The experience of “Children’s Voices for a new Human Space”
Creators: name: Ingoglia, Sonia
name: Barrett, Martyn
name: Iannello, Nicolò Maria
name: Inguglia, Cristiano
name: Liga, Francesca
name: Lo Cricchio, Maria Grazia
name: Tenenbaum, Harriet
name: Wiium, Nora
name: Lo Coco, Alida
Publisher: name: Journal of Clinical & Developmental Psychology
Year: 2021

description: The promotion of citizen’s democratic and intercultural competence is one of the main actions that European societies may take against some of the most significant challenges they are facing nowadays. The paper is aimed at briefly describing the Council of Europe’s Reference Framework of Competences for Democratic Culture, some actions that can be taken to promote democratic and intercultural competences and a case of implementation of this framework in the context of primary school, that is the Erasmus+ Project “Children’s Voices for a new Human Space” (CVS). The paper also aims at illustrating the intellectual outputs produced by CVS project consisting in a training course for teachers, a curriculum for children, an app assisting trainers and teachers during the implementation of the training and the curriculum, and a scientific study aimed at investigating the efficacy of the educational processes in which teachers and children have been involved. Keywords: Democratic Competence; Intercultural Competence; Reference Framework of Competences for Democratic Culture; Teacher Training; Curriculum
description: Journal of Clinical & Developmental Psychology, Online First Articles
Entanglement Properties and Phase Diagram of the Two-Orbital Atomic Hubbard Model
Creators: name: Avella, A.
name: Mancini, F.
name: Scelza, G.
name: Chaturvedi, S.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study the two-orbital Hubbard model in the limit of vanishing kinetic energy. The phase diagram in the $V-J$ plane, with $V$ and $J$ denoting the interorbital hybridization and exchange coupling respectively, at half filling is obtained. A singlet(dimer)-triplet transition is found for a critical value of the ratio $V/J.$ The entropy of formation, both in the mode and in the particle picture, presents a jump as the same critical line in conformity with the suggested relation between criticality and entanglement.
description: 5 pages, 1 figure
Paradiacheopsis fimbriata  Hertel ex Nann.-Bremek
Creators: name: Kluša, Julita
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Protozoa
Mycetozoa
Myxomycetes
Stemonitidales
Stemonitidaceae
Paradiacheopsis
Paradiacheopsis fimbriata

description: ^ Paradiacheopsis fimbriata (G. Lister & Cran) Hertel ex Nann.-Bremek.,
skropstainā rūķīte
- leg. G. Adamonytė, 2005, det. G. Adamonytė, 2006.
description: Published as part of Kluša, Julita, 2023, Complete Checklist Of Myxomycetes In Latvia, pp. 127-151 in Acta Biologica Universitatis Daugavpiliensis 23 (2) on pages 127-151, DOI: 10.59893/abud.23(2).002, http://zenodo.org/record/12650118
title: Ð¢ÐµÑ Ð½Ð¾Ð»Ð¾Ð³Ð¸Ð¸ Ð¿ÑÐ¾Ð´Ð²Ð¸Ð¶ÐµÐ½Ð¸Ñ Ð±ÑÐµÐ½Ð´Ð° Ð¾ÑÐ³Ð°Ð½Ð¸Ð·Ð°ÑÐ¸Ð¸ Ð² ÐºÐ¾Ð¼Ð¼ÐµÑÑÐµÑÐºÐ¾Ð¹ ÑÑÐµÑÐµ (Ð½Ð° Ð¿ÑÐ¸Ð¼ÐµÑÐµ ÐºÐ¾Ð¼Ð¿Ð°Ð½Ð¸Ð¸ Â«ÐÐ¾ÑÑÑÐ¿Ð½ÑÐ¹ Ð ÐµÐ¼Ð¾Ð½ÑÂ»)
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
Creators: name: ÐÑÑÐ³Ð¸Ð½, ÐÐ¼Ð¸ÑÑÐ¸Ð¹
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: 2018
Subjects: ÑÑÑÐ½-ÑÐ¸ÑÐµÐ¹Ð»
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description: Ð Ð´Ð°Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÐµ Ð¿ÑÐ¾Ð²Ð¾Ð´Ð¸ÑÑÑ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ðµ Ð¿Ð¾ÑÑÐµÐ±Ð¸ÑÐµÐ»ÑÑÐºÐ¸Ñ Ð¿ÑÐµÐ´Ð¿Ð¾ÑÑÐµÐ½Ð¸Ð¹ Ð´Ð»Ñ Ð¾Ð¿ÑÐµÐ´ÐµÐ»ÐµÐ½Ð¸Ñ Ð½Ð°Ð¸Ð±Ð¾Ð»ÐµÐµ Ð·Ð½Ð°ÑÐ¸Ð¼ÑÑ ÑÐ»ÐµÐ¼ÐµÐ½ÑÐ¾Ð² ÑÐ¸ÑÐ¼ÐµÐ½Ð½Ð¾Ð³Ð¾ ÑÑÐ¸Ð»Ñ Ð±ÑÐµÐ½Ð´Ð° Ð² ÑÑÐµÑÐµ ÑÑÑÐ½-ÑÐ¸ÑÐµÐ¹Ð»Ð° Ð¸ Ð²ÑÑÐ²Ð»ÐµÐ½Ð¸Ñ Ð°ÑÑÐ¾ÑÐ¸Ð°ÑÐ¸Ð²Ð½Ð¾Ð³Ð¾ ÑÑÐ´Ð° Ð´Ð»Ñ ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ¸ Ð±ÑÐµÐ½Ð´Ð±ÑÐºÐ¾Ð² ÑÐ°Ð¼Ð¾Ð¹ ÐºÐ¾Ð¼Ð¿Ð°Ð½Ð¸Ð¸ Â«ÐÐ¾Ð´ÑÐµÐ· ÐÐ¸Ð·Ð°Ð¹Ð½Â», Ð° ÑÐ°ÐºÐ¶Ðµ Ð¿ÑÐ¾Ð´Ð²Ð¸Ð³Ð°ÐµÐ¼Ð¾Ð¼Ñ ÐµÑ Ð¿ÑÐ¾ÐµÐºÑÑ. Ð Ð°ÑÑÐ¼Ð°ÑÑÐ¸Ð²Ð°ÑÑÑÑ ÑÐ¾ÑÑÐ¸Ð¹ÑÐºÐ¸Ð¹ Ð¸ Ð·Ð°ÑÑÐ±ÐµÐ¶Ð½ÑÐ¹ Ð¿Ð¾Ð´ÑÐ¾Ð´Ñ Ðº ÑÐ¾ÑÑÐ°Ð²Ñ Ð±ÑÐµÐ½Ð´Ð±ÑÐºÐ°. Ð ÑÐ°Ð±Ð¾ÑÐµ ÑÐ°ÐºÐ¶Ðµ Ð´Ð°Ð½Ñ ÑÐµÐºÐ¾Ð¼ÐµÐ½Ð´Ð°ÑÐ¸Ð¸ Ð¸ Ð¿ÑÐµÐ´Ð»Ð¾Ð¶ÐµÐ½Ð¸Ñ ÐÐÐ Â«ÐÐ¾Ð´ÑÐµÐ· ÐÐ¸Ð·Ð°Ð¹Ð½Â» Ð¿Ð¾ Ð²Ð¾Ð·Ð¼Ð¾Ð¶Ð½Ð¾Ð¼Ñ Ð¿ÑÐ°ÐºÑÐ¸ÑÐµÑÐºÐ¾Ð¼Ñ Ð¿ÑÐ¸Ð¼ÐµÐ½ÐµÐ½Ð¸Ñ Ð±ÑÐµÐ½Ð´Ð±ÑÐºÐ¾Ð².
Probing Smearing Effect by Point-Like Graviton in Plane-Wave Matrix Model
Creators: name: Lee, Bum-Hoon
name: Nam, Siyoung
name: Shin, Hyeonjoon
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate the interaction between flat membrane and point-like graviton in the plane-wave matrix model. The one-loop effective potential in the large distance limit is computed and is shown to be of r^{-3} type where r is the distance between two objects. This type of interaction has been interpreted as the one incorporating the smearing effect due to the configuration of flat membrane in plane-wave background. Our result supports this interpretation and provides one more evidence about it.
description: 22 pages, LaTeX2e
title: ÐÑÐ³Ð°Ð½Ð¸Ð·Ð°ÑÐ¸Ñ Ð¿ÑÐ¾Ð¸Ð·Ð²Ð¾Ð´ÑÑÐ²ÐµÐ½Ð½Ð¾-Ñ Ð¾Ð·ÑÐ¹ÑÑÐ²ÐµÐ½Ð½Ð¾Ð¹ Ð´ÐµÑÑÐµÐ»ÑÐ½Ð¾ÑÑÐ¸ ÐºÑÐ»Ð¸Ð½Ð°ÑÐ½Ð¾Ð³Ð¾ ÑÐµÑ Ð° Ð¼Ð¾ÑÐ½Ð¾ÑÑÑÑ 6 Ñ Ð² ÑÑÑÐºÐ¸ Ð´Ð»Ñ ÑÐ½Ð°Ð±Ð¶ÐµÐ½Ð¸Ñ Ð¿ÑÐµÐ´Ð¿ÑÐ¸ÑÑÐ¸Ð¹ Ð±ÑÑÑÑÐ¾Ð³Ð¾ Ð¿Ð¸ÑÐ°Ð½Ð¸Ñ Ð² Ð³. Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³
title: Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÑÐºÐ°Ñ ÑÐ°Ð±Ð¾ÑÐ°
titleType: Subtitle
Creators: name: ÐÐ¾Ð»ÑÐ±ÐµÐ², ÐÐ¼Ð¸ÑÑÐ¸Ð¹
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: 2017
Subjects: ÐºÑÐ»Ð¸Ð½Ð°ÑÐ½ÑÐ¹ ÑÐµÑ
Ð±ÑÑÑÑÐ¾Ðµ Ð¿Ð¸ÑÐ°Ð½Ð¸Ðµ
Ð¿ÑÐ¾Ð¸Ð·Ð²Ð¾Ð´ÑÑÐ²ÐµÐ½Ð½Ð°Ñ Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ð°
Ð¿ÑÐ¾Ð¸Ð·Ð²Ð¾Ð´ÑÑÐ²ÐµÐ½Ð½Ð¾-Ñ Ð¾Ð·ÑÐ¹ÑÑÐ²ÐµÐ½Ð½Ð°Ñ Ð´ÐµÑÑÐµÐ»ÑÐ½Ð¾ÑÑÑ

description: ÐÑÐ¿Ð¾Ð»Ð½ÐµÐ½Ð¾ Ð¼Ð°ÑÐºÐµÑÐ¸Ð½Ð³Ð¾Ð²Ð¾Ðµ Ð¾Ð±Ð¾ÑÐ½Ð¾Ð²Ð°Ð½Ð¸Ðµ Ð½ÐµÐ¾Ð±ÑÐ¾Ð´Ð¸Ð¼Ð¾ÑÑÐ¸ Ð¿ÑÐ¾ÐµÐºÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ ÐºÑÐ»Ð¸Ð½Ð°ÑÐ½Ð¾Ð³Ð¾ ÑÐµÑÐ° Ð´Ð»Ñ ÑÐ½Ð°Ð±Ð¶ÐµÐ½Ð¸Ñ Ð¿ÑÐµÐ´Ð¿ÑÐ¸ÑÑÐ¸Ð¹ Ð±ÑÑÑÑÐ¾Ð³Ð¾ Ð¿Ð¸ÑÐ°Ð½Ð¸Ñ, Ð¿ÑÐ¾Ð¸Ð·Ð²ÐµÐ´ÐµÐ½Ñ ÑÐµÑÐ½Ð¾Ð»Ð¾Ð³Ð¸ÑÐµÑÐºÐ¸Ðµ ÑÐ°ÑÑÐµÑÑ Ð¾Ð±Ð¾ÑÑÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ, Ð¾Ð¿ÑÐµÐ´ÐµÐ»ÐµÐ½Ð° Ð¾ÑÐ³Ð°Ð½Ð¸Ð·Ð°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÑÑÑÐºÑÑÑÐ° Ð¿ÑÐµÐ´Ð¿ÑÐ¸ÑÑÐ¸Ñ. Ð Ð°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½Ñ Ð¼ÐµÑÐ¾Ð¿ÑÐ¸ÑÑÐ¸Ñ Ð¿Ð¾ Ð¾Ð±ÐµÑÐ¿ÐµÑÐµÐ½Ð¸Ñ Ð±ÐµÐ·Ð¾Ð¿Ð°ÑÐ½Ð¾ÑÑÐ¸ Ð´ÐµÑÑÐµÐ»ÑÐ½Ð¾ÑÑÐ¸ Ð¿ÑÐ¾ÐµÐºÑÐ¸ÑÑÐµÐ¼Ð¾Ð³Ð¾ Ð¿ÑÐµÐ´Ð¿ÑÐ¸ÑÑÐ¸Ñ, ÐµÐ³Ð¾ Ð¿Ð»Ð°Ð½Ð¸ÑÐ¾Ð²Ð¾ÑÐ½Ð¾Ðµ ÑÐµÑÐµÐ½Ð¸Ðµ Ð¸ Ð¾Ð¿ÑÐµÐ´ÐµÐ»ÐµÐ½Ñ Ð¾ÑÐ½Ð¾Ð²Ð½ÑÐµ ÑÐºÐ¾Ð½Ð¾Ð¼Ð¸ÑÐµÑÐºÐ¸Ðµ Ð¿Ð¾ÐºÐ°Ð·Ð°ÑÐµÐ»Ð¸.
On the Consistency of Perturbativity and Gauge Coupling Unification
Creators: name: Kopp, Joachim
name: Lindner, Manfred
name: Niro, Viviana
name: Underwood, Thomas E. J.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate constraints that the requirements of perturbativity and gauge coupling unification impose on extensions of the Standard Model and of the MSSM. In particular, we discuss the renormalization group running in several SUSY left-right symmetric and Pati-Salam models and show how the various scales appearing in these models have to be chosen in order to achieve unification. We find that unification in the considered models occurs typically at scales below M^{min}_{B violation} = 10^16 GeV, implying potential conflicts with the non-observation of proton decay. We emphasize that extending the particle content of a model in order to push the GUT scale higher or to achieve unification in the first place will very often lead to non-perturbative evolution. We generalize this observation to arbitrary extensions of the Standard Model and of the MSSM and show that the requirement of perturbativity up to M^{min}_{B violation}, if considered a valid guideline for model building, severely limits the particle content of any such model, especially in the supersymmetric case. However, we also discuss several mechanisms to circumvent perturbativity and proton decay issues, for example in certain classes of extra dimensional models.
description: LaTeX, 20 pages, 8 figures, 1 table
title: Ð Ð°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ° Ð¼ÐµÑ Ð°Ð½Ð¸Ð·Ð¼Ð° Ð¿Ð¾Ð²ÑÑÐµÐ½Ð¸Ñ ÑÐºÐ¾Ð½Ð¾Ð¼Ð¸ÑÐµÑÐºÐ¾Ð³Ð¾ ÑÐ¾ÑÑÐ° ÑÐµÐ³Ð¸Ð¾Ð½Ð° Ð² ÑÑÐ»Ð¾Ð²Ð¸ÑÑ ÑÐ¾Ð²ÑÐµÐ¼ÐµÐ½Ð½Ð¾Ð³Ð¾ ÑÐ°Ð·Ð²Ð¸ÑÐ¸Ñ Ð¼Ð¸ÑÐ¾Ð²Ð¾Ð¹ ÑÐºÐ¾Ð½Ð¾Ð¼Ð¸ÐºÐ¸ (Ð½Ð° Ð¿ÑÐ¸Ð¼ÐµÑÐµ Ð§ÑÐºÐ¾ÑÑÐºÐ¾Ð³Ð¾ Ð°Ð²ÑÐ¾Ð½Ð¾Ð¼Ð½Ð¾Ð³Ð¾ Ð¾ÐºÑÑÐ³Ð°)
title: Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÑÐºÐ°Ñ ÑÐ°Ð±Ð¾ÑÐ°
titleType: Subtitle
Creators: name: Ð Ð°ÑÐ¼Ð°Ð½Ð¾Ð²Ð°, ÐÐ°ÑÐ¸ÐµÐ»ÐµÐ½Ð°
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: 2017
Subjects: Ð§ÑÐºÐ¾ÑÑÐºÐ¸Ð¹ Ð°Ð²ÑÐ¾Ð½Ð¾Ð¼Ð½ÑÐ¹ Ð¾ÐºÑÑÐ³
ÑÐºÐ¾Ð½Ð¾Ð¼Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ¾ÑÑ
adl-Ð¼Ð¾Ð´ÐµÐ»Ñ
ÑÐºÐ¾Ð½Ð¾Ð¼Ð¸ÐºÐ° ÑÐµÐ³Ð¸Ð¾Ð½Ð°

description: ÐÐ¾ Ð²Ð²ÐµÐ´ÐµÐ½Ð¸Ð¸ Ð¾Ð±Ð¾ÑÐ½Ð¾Ð²Ð°Ð½Ð° Ð°ÐºÑÑÐ°Ð»ÑÐ½Ð¾ÑÑÑ ÑÐµÐ¼Ñ, Ð¸Ð·Ð»Ð¾Ð¶ÐµÐ½Ñ ÑÐµÐ»Ñ, Ð·Ð°Ð´Ð°ÑÐ¸ Ð´Ð»Ñ Ð´Ð¾ÑÑÐ¸Ð¶ÐµÐ½Ð¸Ñ Ð´Ð°Ð½Ð½Ð¾Ð¹ ÑÐµÐ»Ð¸, Ð¿ÑÐµÐ´Ð¼ÐµÑ Ð¸ Ð¾Ð±ÑÐµÐºÑ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ. Ð Ð¿ÐµÑÐ²Ð¾Ð¹ Ð³Ð»Ð°Ð²Ðµ Ð¾Ð¿Ð¸ÑÐ°Ð½Ð¾ ÑÐµÐºÑÑÐµÐµ ÑÐºÐ¾Ð½Ð¾Ð¼Ð¸ÑÐµÑÐºÐ¾Ðµ ÑÐ¾ÑÑÐ¾ÑÐ½Ð¸Ñ Ð§ÑÐºÐ¾ÑÑÐºÐ¾Ð³Ð¾ Ð°Ð²ÑÐ¾Ð½Ð¾Ð¼Ð½Ð¾Ð³Ð¾ Ð¾ÐºÑÑÐ³Ð°, ÑÐ°ÐºÑÐ¾ÑÑ ÑÐºÐ¾Ð½Ð¾Ð¼Ð¸ÑÐµÑÐºÐ¾Ð³Ð¾ ÑÐ¾ÑÑÐ° Ð¸ Ð²Ð½ÐµÑÐ½ÐµÑÐºÐ¾Ð½Ð¾Ð¼Ð¸ÑÐµÑÐºÐ°Ñ Ð´ÐµÑÑÐµÐ»ÑÐ½Ð¾ÑÑÑ ÑÐµÐ³Ð¸Ð¾Ð½Ð°. ÐÐ¾ Ð²ÑÐ¾ÑÐ¾Ð¹ Ð³Ð»Ð°Ð²Ðµ ÑÑÐ¾ÑÐ¼ÑÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð° ÑÐµÐ»Ñ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ - ÑÐµÐ¾ÑÐµÑÐ¸ÑÐµÑÐºÐ°Ñ ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ° ÑÑÑÐµÑÑÐ²ÑÑÑÐ¸Ñ Ð¼ÐµÑÐ°Ð½Ð¸Ð·Ð¼Ð¾Ð² Ð¸ ÐºÐ¾Ð½ÑÐµÐ¿ÑÐ¸Ð¹ ÑÐµÐ³Ð¸Ð¾Ð½Ð°Ð»ÑÐ½Ð¾Ð³Ð¾ ÑÐºÐ¾Ð½Ð¾Ð¼Ð¸ÑÐµÑÐºÐ¾Ð³Ð¾ ÑÐ¾ÑÑÐ°, Ð°Ð½Ð°Ð»Ð¸Ð· ÑÑÑÐµÑÑÐ²ÑÑÑÐ¸Ñ Ð¼ÐµÑÐ°Ð½Ð¸Ð·Ð¼Ð¾Ð² ÑÐµÐ³Ð¸Ð¾Ð½Ð°Ð»ÑÐ½Ð¾Ð³Ð¾ ÑÐºÐ¾Ð½Ð¾Ð¼Ð¸ÑÐµÑÐºÐ¾Ð³Ð¾ ÑÐ¾ÑÑÐ°. ÐÐ·ÑÑÐµÐ½Ð¸Ðµ ÑÑÑÐµÑÑÐ²ÑÑÑÐ¸Ñ Ð¿Ð¾Ð´ÑÐ¾Ð´Ð¾Ð² Ðº ÑÐ¾Ð·Ð´Ð°Ð½Ð¸Ñ Ð±Ð»Ð°Ð³Ð¾Ð¿ÑÐ¸ÑÑÐ½ÑÑ ÑÑÐ»Ð¾Ð²Ð¸Ð¹ ÑÐºÐ¾Ð½Ð¾Ð¼Ð¸ÑÐµÑÐºÐ¾Ð³Ð¾ ÑÐ¾ÑÑÐ° Ð² Ð§ÑÐºÐ¾ÑÑÐºÐ¾Ð¼ Ð°Ð²ÑÐ¾Ð½Ð¾Ð¼Ð½Ð¾Ð¼ Ð¾ÐºÑÑÐ³Ðµ. ÐÐ½Ð°Ð»Ð¸Ð· Ð¼ÐµÐ¶Ð´ÑÐ½Ð°ÑÐ¾Ð´Ð½Ð¾Ð¹ Ð¿ÑÐ°ÐºÑÐ¸ÐºÐ¸ ÑÐµÐ³Ð¸Ð¾Ð½Ð°Ð»ÑÐ½Ð¾Ð³Ð¾ ÑÐºÐ¾Ð½Ð¾Ð¼Ð¸ÑÐµÑÐºÐ¾Ð³Ð¾ ÑÐ¾ÑÑÐ° Ð² Ð°ÑÐºÑÐ¸ÑÐµÑÐºÐ¸Ñ ÑÑÑÐ°Ð½Ð°Ñ. Ð ÑÑÐµÑÑÐµÐ¹ Ð³Ð»Ð°Ð²Ðµ Ð¿ÑÐ¾Ð²ÐµÐ´ÐµÐ½ Ð°Ð½Ð°Ð»Ð¸Ð· ÑÐ°ÐºÑÐ¾ÑÐ¾Ð² ÑÐºÐ¾Ð½Ð¾Ð¼Ð¸ÑÐµÑÐºÐ¾Ð³Ð¾ ÑÐ¾ÑÑÐ° ADL-Ð¼Ð¾Ð´ÐµÐ»Ð¸. Ð Ð·Ð°ÐºÐ»ÑÑÐµÐ½Ð¸Ð¸ Ð¸Ð·Ð»Ð¾Ð¶ÐµÐ½Ñ Ð¿Ð¾Ð»ÑÑÐµÐ½Ð½ÑÐµ ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÑ Ð¸ Ð²ÑÐ²Ð¾Ð´Ñ Ð¿Ð¾ Ð¿Ð¾ÑÑÐ°Ð²Ð»ÐµÐ½Ð½ÑÐ¼ Ð·Ð°Ð´Ð°ÑÐ°Ð¼.
Additional file 1 of Which is the best femoral implant in children with osteogenesis imperfecta? a retrospective cohort study of 783 procedures
Creators: name: Yang, Hongjiang
name: Li, Bo
name: Xing, Cong
name: Gao, Shijie
name: Zhu, Wenbiao
name: Xiong, Yang
name: Ren, Xiuzhi
name: Ning, Guangzhi
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Science Policy
subject: Computational Biology

description: Additional file 1: Supplementary Fig 1. AP femur radiographs of the plate and screws (a-c), the telescopic rod (d-f), the non-elongating rod (g-i) and the elastic nail (j-m). The preoperative radiographs (a, d, g, j) and postoperative radiographs (b, e, h, k) of the plate group, the telescopic nail group, the non-elongating rod group and the elastic nail group were shown respectively. Refracture happened in two ends of the plate (c), refracture happened in proximal femur (f), refracture happened in bony segment without supporting (i) and refracture owing to insufficient supporting (j) were the main complications for revision surgery in each group.
title: ÐÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ðµ Ð²Ð»Ð¸ÑÐ½Ð¸Ñ ÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¸Ð¸ ÑÑÐ°Ð½Ð·Ð¸ÑÑÐ¾ÑÐ½Ð¾Ð¹ III-N Ð³ÐµÑÐµÑÐ¾ÑÑÑÑÐºÑÑÑÑ Ð½Ð° ÑÐ²Ð¾Ð¹ÑÑÐ²Ð° Ð´Ð²ÑÐ¼ÐµÑÐ½Ð¾Ð³Ð¾ ÑÐ»ÐµÐºÑÑÐ¾Ð½Ð½Ð¾Ð³Ð¾ Ð³Ð°Ð·Ð°
title: Ð¼Ð°Ð³Ð¸ÑÑÐµÑÑÐºÐ°Ñ Ð´Ð¸ÑÑÐµÑÑÐ°ÑÐ¸Ñ
titleType: Subtitle
Creators: name: ÐÑÑÑÐ±Ð°ÑÐµÐ², ÐÐ¸ÐºÐ¾Ð»Ð°Ð¹
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: 2016
Subjects: ÐÐ¾Ð»ÑÐ¿ÑÐ¾Ð²Ð¾Ð´Ð½Ð¸ÐºÐ¸
ÐÐ¾Ð»ÑÐ¿ÑÐ¾Ð²Ð¾Ð´Ð½Ð¸ÐºÐ¾Ð²ÑÐµ ÑÑÑÑÐºÑÑÑÑ

description: Ð Ð´Ð°Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÐµ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð»Ð¾ÑÑ Ð²Ð»Ð¸ÑÐ½Ð¸Ñ ÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¸Ð¸ Ð´Ð²Ð¾Ð¹Ð½Ð¾Ð¹ ÑÑÐ°Ð½Ð·Ð¸ÑÑÐ¾ÑÐ½Ð¾Ð¹ Ð³ÐµÑÐµÑÐ¾ÑÑÑÑÐºÑÑÑÑ AlGaN/GaN/AlGaN Ð½Ð° ÑÐ»ÐµÐºÑÑÐ¾ÑÐ¸Ð·Ð¸ÑÐµÑÐºÐ¸Ðµ Ð¿Ð°ÑÐ°Ð¼ÐµÑÑÑ Ð´Ð²ÑÐ¼ÐµÑÐ½Ð¾Ð³Ð¾ ÑÐ»ÐµÐºÑÑÐ¾Ð½Ð½Ð¾Ð³Ð¾ Ð³Ð°Ð·Ð°. ÐÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¸Ðµ Ga Ð² ÐºÐ°ÑÐµÑÑÐ²Ðµ ÑÑÑÑÐ°ÐºÑÐ°Ð½ÑÐ° Ð¿ÑÐ¸ ÑÐ¾ÑÑÐµ Ð±ÑÑÐµÑÐ½Ð¾Ð³Ð¾ ÑÐ»Ð¾Ñ AlN Ð¿Ð¾Ð·Ð²Ð¾Ð»Ð¸Ð»Ð¾ Ð¿Ð¾Ð»ÑÑÐ¸ÑÑ Ð³ÐµÑÐµÑÐ¾ÑÑÑÑÐºÑÑÑÑ Ñ Ð¿Ð¾Ð´Ð²Ð¸Ð¶Ð½Ð¾ÑÑÑÑ 1800-1900 ÑÐ¼2/Ð.Ñ. ÐÑÐ¸ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¸Ðµ AlN Ð² ÐºÐ°ÑÐµÑÑÐ²Ðµ Ð±Ð°ÑÑÐµÑÐ½Ð¾Ð³Ð¾ ÑÐ»Ð¾Ñ Ð±ÑÐ»Ð¸ Ð¿Ð¾Ð»ÑÑÐµÐ½Ñ ÑÑÑÑÐºÑÑÑÑ Ñ Ð¿Ð¾Ð´Ð²Ð¸Ð¶Ð½Ð¾ÑÑÑÑ ÑÐ»ÐµÐºÑÑÐ¾Ð½Ð¾Ð² 1050 ÑÐ¼2/ÐâÑ Ð¸ ÐºÐ¾Ð½ÑÐµÐ½ÑÑÐ°ÑÐ¸ÐµÐ¹ 1.6 Ã 1013 ÑÐ¼-2 Ð¿ÑÐ¸ ÑÑÐ¾Ð¼ ÑÐ¾Ð»ÑÐ¸Ð½Ð° Ð±Ð°ÑÑÐµÑÐ½Ð¾Ð³Ð¾ ÑÐ»Ð¾Ñ ÑÐ¾ÑÑÐ°Ð²Ð¸Ð»Ð° 3 Ð½Ð¼. ÐÑÑÐ°ÑÐµÐ½Ð½ÑÐµ ÑÑÑÑÐºÑÑÑÑ Ñ Ð±Ð°ÑÑÐµÑÐ½ÑÐ¼ ÑÐ»Ð¾ÐµÐ¼ InAlN ÑÐ¾Ð»ÑÐ¸Ð½Ð¾Ð¹ 9Ð½Ð¼ Ð¿ÑÐ¸ Ð¿Ð¾ÑÐ¾ÐºÐµ Ð°Ð¼Ð¼Ð¸Ð°ÐºÐ° 1000 ÑÐ¼3/Ð¼Ð¸Ð½ Ð¸Ð¼ÐµÐ»Ð¸ Ð¿Ð¾Ð´Ð²Ð¸Ð¶Ð½Ð¾ÑÑÑ 1100-1200 ÑÐ¼2/ÐâÑ Ð¸ ÐºÐ¾Ð½ÑÐµÐ½ÑÑÐ°ÑÐ¸Ñ 2.0-2.2 Ã 1013 ÑÐ¼-2.
description: In this work the effect of design of double transistor heterostructure AlGaN/GaN/AlGaN on the electrical parameters of the two-dimensional electron gas was investigated. The use of Ga as surfactant with growth AlN buffer layer allowed to obtain heterostructures with a mobility 1800-1900 cm2/Vâs. Heterostructures with the barrier layer AlN with the electron mobility of 1050 cm2/Vâs and concentration of 1.6 Ã 1013 cm-2 were obtained, the thickness of the barrier layer was 3 nm. The grown structures with a barrier layer InAlN at the thickness of 9nm at ammonia flow 1000 cm3/min had a mobility of 1100-1200 cm2/Vâs and â concentration of 2.0-2.2 Ã 1013 cm-2.
title: Long-Term Colloidally Stable Aqueous Dispersions of ≤5 nm Spinel Ferrite Nanoparticles
Creators: name: Eckardt, Mirco
name: Thomä, Sabrina L. J.
name: Dulle, Martin
name: Hörner, Gerald
name: Weber, Birgit
name: Förster, Stephan
name: Zobel, Mirijam
Publisher: name: University of Bayreuth
Year: 2020
Subjects: subject: colloidal stability
subject: nanoparticles
subject: spinel phase
subject: SAXS
subject: ferrites
subject: 540

description: Applications in biomedicine and ferrofluids, for instance, require long-term colloidally stable, concentrated aqueous dispersions of magnetic, biocompatible nanoparticles. Iron oxide and related spinel ferrite nanoparticles stabilized with organic molecules allow fine-tuning of magnetic properties via cation substitution and water-dispersibility. Here, we synthesize <5 nm iron oxide and spinel ferrite
Tailoring the carrier mobility of semiconducting nanowires by remote dielectrics
Creators: name: Konar, Aniruddha
name: Jena, Debdeep
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The dielectric environment of thin semiconductor nanowires can affect the charge transport properties inside the wire. In this work, it is shown that Coulomb impurity scattering inside thin nanowires can be damped strongly by coating the wire with a high-k dielectric. This will lead to an increase in the mobility of free charges inside the wire.
description: 4 pages, 3 figures
title: Supply chain management of biofuel production from waste in St. Petersburg city, Russia-Waste processing models
title: master's thesis
titleType: Subtitle
Creators: name: Arsalan Asadpoori
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: 2017
Subjects: ÐÑ ÑÐ°Ð½Ð° Ð¾ÐºÑÑÐ¶Ð°ÑÑÐµÐ¹ ÑÑÐµÐ´Ñ Ð² Ð Ð¾ÑÑÐ¸Ð¸
ÐÑÑ Ð¾Ð´Ñ
Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³, Ð³Ð¾ÑÐ¾Ð´
environmental protection regulations
waste management system
waste pollution
public awareness

description: St. Petersburg city, as the second largest city in Russia and one of the most beautiful cities in Europe, is gradually entering into a critical environmental problem as many other mega cities in other countries. Dealing with huge volumes of municipal waste every day and relying only on relatively old management system ring the bells of danger for decision makers and authorities in this city. Although environmental protection regulations are updating day by day and new revisions are promising, no big achievement has been reported in amending the waste management system. Hence, it seems essential to evaluate the system, extract the practical data, focus on the improving opportunities and design a new substituting model to overcome the problem. In this thesis, the importance of waste pollutions are introduced and a general comparison is provided to show the developments in the neighboring countries e.g. Finland and Estonia. These two countries have been chosen as firstly, they are going forward strictly along with the European waste management regulations and secondly, they have both soil and water borders with Russia, especially in the vicinity of St. Petersburg.
Understanding, evaluating, and justifying sample size : a systematic review and meta-meta-analysis
Creators: name: Lemmons, Malina C.
Publisher: name: University of British Columbia
Year: 2024

description: The pursuit of explicitly justifying a study’s sample size began in hopes of mitigating p-hacking and false positive rates across psychology through having researchers be more thoughtful about the research process. However, there is still the question about how to properly justify a sample size for a study. A review of five years of sample size justifications in Psychological Science demonstrates that researchers use many different methods to justify a sample’s size. For example, some common justifications are heuristics, resource constraints, and priori power analysis. While there are many ways to justify a study’s sample size, much uncertainty still surrounds the merit and validity of the different types of sample size justifications. To give researchers and readers a better benchmark to justify and evaluate sample size, I propose using the distribution of effect sizes in a specific discipline to find the average statistical power, known as generalized average power. Starting with the distribution of effect sizes in social psychology, I use robust Bayesian model averaging across 71 meta-analyses to simulate the distribution of population effect sizes in social psychology. I then use the distribution to determine the sample size needed to maintain an average power of 80% across the field. This provides an evidence-based heuristic for researchers, readers, reviewers, and editors to effectively evaluate — and justify — sample sizes.
Individual project on theme " Ambystoma mexicanum"  (MOOC: CompTech in biology)
Creators: name: Polyakova Anna
Publisher: name: Zenodo
Year: 2025

description: Данный кейс является результатом реализации индивидуального проекта Поляковой Анны по теме  "Ambystoma mexicanum" в рамках онлайн курса "Компьютерные технологии в биологии" (автор – А.В. Ваганов) (https://stepik.org/course/60859/promo)
description: Ambystoma mexicanum
FOREIGN EXPERIENCES IN THE FORMATION OF INFORMATION AND MEDIA CULTURE IN YOUNG PEOPLE
Creators: name: Rakhimova, Shakhnoza
Publisher: name: Zenodo
Year: 2025

description: Nowadays, the development of information technology is determined by its increasing impact on the life and activities of individuals, society, and the state. The information field, that is, an information complex, a system consisting of information and information gathering and distribution tools, is undoubtedly an important network that manages and directs social relations. In the context of changes in the methods of working with information and the expansion of the fields of application of new information technologies, the influence of information and psychological threats on the individual's mind is increasing.
title: ÐÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ðµ Ð²Ð»Ð¸ÑÐ½Ð¸Ñ Ð¿Ð¾Ð´Ð²Ð¾Ð´ÑÑÐ¸Ñ ÑÐ»ÐµÐ¼ÐµÐ½ÑÐ¾Ð² Ð½Ð° Ð³Ð¸Ð´ÑÐ°Ð²Ð»Ð¸ÑÐµÑÐºÑÑ ÑÑÑÐµÐºÑÐ¸Ð²Ð½Ð¾ÑÑÑ Ð¿ÑÐ¾Ð¼ÐµÐ¶ÑÑÐ¾ÑÐ½Ð¾Ð¹ ÑÑÑÐ¿ÐµÐ½Ð¸ Ð² Ð¼Ð½Ð¾Ð³Ð¾ÑÑÑÐ¿ÐµÐ½ÑÐ°ÑÑÑ ÑÐµÐ½ÑÑÐ¾Ð±ÐµÐ¶Ð½ÑÑ Ð½Ð°ÑÐ¾ÑÐ°Ñ ÑÐ¸Ð¿Ð° BB3
title: Research of influence of the inlet elements design on a hydraulic efficiency of an intermediate stage in the BB3-type multi-stage centrifugal pumps
Creators: name: ÐÐ°Ð´ÑÐ¾ÑÐ¸Ð¹, ÐÐ½Ð´ÑÐµÐ¹
name: Ð¢Ð²ÐµÑÐ´Ð¾ÑÐ»ÐµÐ±, ÐÐ³Ð¾ÑÑ
name: "ÐÐ¸Ð´ÑÐ°Ð²Ð»Ð¸ÑÐµÑÐºÐ¸Ðµ Ð¼Ð°ÑÐ¸Ð½Ñ, Ð³Ð¸Ð´ÑÐ¾Ð¿ÑÐ¸Ð²Ð¾Ð´Ñ Ð¸ Ð³Ð¸Ð´ÑÐ¾Ð¿Ð½ÐµÐ²Ð¼Ð¾Ð°Ð²ÑÐ¾Ð¼Ð°ÑÐ¸ÐºÐ°. Ð¡Ð¾Ð²ÑÐµÐ¼ÐµÐ½Ð½Ð¾Ðµ ÑÐ¾ÑÑÐ¾ÑÐ½Ð¸Ðµ Ð¸ Ð¿ÐµÑÑÐ¿ÐµÐºÑÐ¸Ð²Ñ ÑÐ°Ð·Ð²Ð¸ÑÐ¸Ñ", Ð¼ÐµÐ¶Ð´ÑÐ½Ð°ÑÐ¾Ð´Ð½Ð°Ñ Ð½Ð°ÑÑÐ½Ð¾-ÑÐµÑ Ð½Ð¸ÑÐµÑÐºÐ°Ñ ÐºÐ¾Ð½ÑÐµÑÐµÐ½ÑÐ¸Ñ (2020; Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³)
Publisher: name: ÐÐÐÐÐ¢ÐÐ¥-ÐÐ ÐÐ¡Ð¡
Year: 2020
Subjects: ÐÐ°ÑÐ¾ÑÑ ÑÐµÐ½ÑÑÐ¾Ð±ÐµÐ¶Ð½ÑÐµ

description: Ð Ð´Ð°Ð½Ð½Ð¾Ð¹ ÑÑÐ°ÑÑÐµ Ð¿ÑÐ¸Ð²ÐµÐ´ÐµÐ½Ñ ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÑ ÑÐ°ÑÑÑÑÐ½ÑÑ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ð¹ ÑÐ°Ð·Ð»Ð¸ÑÐ½ÑÑ Ð²Ð°ÑÐ¸Ð°Ð½ÑÐ¾Ð² Ð¿Ð¾Ð´Ð²Ð¾Ð´ÑÑÐ¸Ñ ÑÐ»ÐµÐ¼ÐµÐ½ÑÐ¾Ð² Ð² Ð¿ÑÐ¾Ð¼ÐµÐ¶ÑÑÐ¾ÑÐ½Ð¾Ð¹ ÑÑÑÐ¿ÐµÐ½Ð¸ Ð² Ð½Ð°ÑÐ¾ÑÐ°Ñ ÑÐ¸Ð¿Ð° ÐÐ3, Ð¿ÑÐµÐ´Ð½Ð°Ð·Ð½Ð°ÑÐµÐ½Ð½ÑÑ Ð´Ð»Ñ ÑÑÐ°Ð½ÑÐ¿Ð¾ÑÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ð½ÐµÑÑÐ¸ Ð¸ Ð´Ñ. Ð¶Ð¸Ð´ÐºÐ¾ÑÑÐµÐ¹. ÐÑÐ¿Ð¾Ð»Ð½ÐµÐ½Ð¾ ÑÑÐ°Ð²Ð½ÐµÐ½Ð¸Ðµ Ð¿Ð¾ÑÐµÑÑ Ð² ÑÐ»ÐµÐ¼ÐµÐ½ÑÐ°Ñ Ð¿ÑÐ¾ÑÐ¾ÑÐ½Ð¾Ð¹ ÑÐ°ÑÑÐ¸ Ñ ÑÑÐµÐ¼Ñ ÑÐ°Ð·Ð»Ð¸ÑÐ½ÑÐ¼Ð¸ Ð²Ð°ÑÐ¸Ð°Ð½ÑÐ°Ð¼Ð¸ Ð¿Ð¾Ð´Ð²Ð¾Ð´ÑÑÐ¸Ñ Ð»Ð¾Ð¿Ð°ÑÐ¾Ðº Ð² Ð¾Ð±ÑÐ°ÑÐ½ÑÑ ÐºÐ°Ð½Ð°Ð»Ð°Ñ Ð¿ÑÐ¾Ð¼ÑÑÑÐ¿ÐµÐ½Ð¸.
description: This article presents results of computational studies for different variants of inlet design in an intermediate stage of a BB3 type multi-stage pump ntended for transportation of crude oil and other similar liquids. Hydraulic losses in the flow part elements are compared for three different variants of the inlet vanes in the return channels of an intermediate stage.
On the Kennicutt-Schmidt relation of low-metallicity high-redshift galaxies
Creators: name: Gnedin, Nickolay Y.
name: Kravtsov, Andrey V.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present results of self-consistent, high-resolution cosmological simulations of galaxy formation at z~3. The simulations employ recently developed recipe for star formation based on the local abundance of molecular hydrogen, which is tracked self-consistently during the course of simulation. The phenomenological H2 formation model accounts for the effects of dissociating UV radiation of stars in each galaxy, as well as self-shielding and shielding of H2 by dust, and therefore allows us to explore effects of lower metallicities and higher UV fluxes prevalent in high redshift galaxies on their star formation. We compare stellar masses, metallicities, and star formation rates of the simulated galaxies to available observations of the Lyman Break Galaxies (LBGs) and find a reasonable agreement. We find that the Kennicutt-Schmidt (KS) relation exhibited by our simulated galaxies at z~3 is substantially steeper and has a lower amplitude than the z=0 relation at Sigma_gas < 100 Msun/pc^2. The predicted relation, however, is consistent with existing observational constraints for the z~3 Damped Lyman $α$ (DLA) and LBGs. Our tests show that the main reason for the difference from the local KS relation is lower metallicity of the ISM in high redshift galaxies. We discuss several implications of the metallicity-dependence of the KS relation for galaxy evolution and interpretation of observations.
description: Submitted to ApJ
O-operators on associative algebras and dendriform algebras
Creators: name: Bai, Chengming
name: Guo, Li
name: Ni, Xiang
Publisher: name: arXiv
Year: 2010
Subjects: subject: Rings and Algebras (math.RA)
subject: Category Theory (math.CT)
subject: Operator Algebras (math.OA)
subject: FOS: Mathematics
subject: 17A30, 17A42, 18D50

description: An O-operator is a relative version of a Rota-Baxter operator and, in the Lie algebra context, is originated from the operator form of the classical Yang-Baxter equation. We generalize the well-known construction of dendriform dialgebras and trialgebras from Rota-Baxter algebras to a construction from O-operators. We then show that this construction from O-operators gives all dendriform dialgebras and trialgebras. Furthermore there are bijections between certain equivalence classes of invertible O-operators and certain equivalence classes of dendriform dialgebras and trialgebras.
description: 13 pages
title: Ð¤Ð»ÑÐºÑÑÐ°ÑÐ¸Ð¸ Ð°Ð¼Ð¿Ð»Ð¸ÑÑÐ´Ñ Ð¸ ÑÐ°ÑÑÐ¾ÑÑ Ð² Ð´Ð¸Ð¾Ð´Ð½ÑÑ Ð³ÐµÐ½ÐµÑÐ°ÑÐ¾ÑÐ°Ñ Ð¡ÐÐ§
title: ÑÑÐµÐ±Ð½Ð¾Ðµ Ð¿Ð¾ÑÐ¾Ð±Ð¸Ðµ
titleType: Subtitle
Creators: name: ÐÐµÑÐµÑÑÐºÐ¾Ð², ÐÐ»ÐµÐºÑÐ°Ð½Ð´Ñ
name: Ð¡ÐºÐ°Ð±Ð¾Ð²ÑÐºÐ¸Ð¹, ÐÐ¸ÑÐ°Ð¸Ð»
Publisher: name: ÐÐ·Ð´-Ð²Ð¾ Ð¡ÐÐ±ÐÐ¢Ð£
Year: 2001
Subjects: ÐÐµÐ½ÐµÑÐ°ÑÐ¾ÑÑ ÑÐ²ÐµÑÑ Ð²ÑÑÐ¾ÐºÐ¸Ñ ÑÐ°ÑÑÐ¾Ñ Ð¿Ð¾Ð»ÑÐ¿ÑÐ¾Ð²Ð¾Ð´Ð½Ð¸ÐºÐ¾Ð²ÑÐµ

description: ÐÑÐµÐ´Ð½Ð°Ð·Ð½Ð°ÑÐµÐ½Ð¾ Ð´Ð»Ñ ÑÑÑÐ´ÐµÐ½ÑÐ¾Ð² ÑÐ°Ð´Ð¸Ð¾ÑÐ¸Ð·Ð¸ÑÐµÑÐºÐ¾Ð³Ð¾ ÑÐ°ÐºÑÐ»ÑÑÐµÑÐ° Ð¸ ÐÐ½ÑÑÐ¸ÑÑÑÐ° Ð¸Ð½ÑÐµÐ»Ð»ÐµÐºÑÑÐ°Ð»ÑÐ½ÑÑ ÑÐ¸ÑÑÐµÐ¼ Ð¸ ÑÐµÑÐ½Ð¾Ð»Ð¾Ð³Ð¸Ð¹, Ð¾Ð±ÑÑÐ°ÑÑÐ¸ÑÑÑ Ð¿Ð¾ Ð½Ð°Ð¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸ÑÐ¼ 552500 "Ð Ð°Ð´Ð¸Ð¾ÑÐµÑÐ½Ð¸ÐºÐ°" (Ð¼Ð°Ð³Ð¸ÑÑÐµÑÑÐºÐ°Ñ Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ð° 552502) Ð¸ 654200 (Ð¿Ð¾Ð´Ð³Ð¾ÑÐ¾Ð²ÐºÐ° ÑÐ¿ÐµÑÐ¸Ð°Ð»Ð¸ÑÑÐ¾Ð²) Ð¿Ð¾ ÑÐ¿ÐµÑÐ¸Ð°Ð»ÑÐ½Ð¾ÑÑÑÐ¼ 200700 "Ð Ð°Ð´Ð¸Ð¾ÑÐµÑÐ½Ð¸ÐºÐ°" Ð¸ 071500 "Ð Ð°Ð´Ð¸Ð¾ÑÐ¸Ð·Ð¸ÐºÐ°", Ð¸Ð·ÑÑÐ°ÑÑÐ¸Ñ Ð´Ð¸ÑÑÐ¸Ð¿Ð»Ð¸Ð½Ñ "Ð¤Ð»ÑÐºÑÑÐ°ÑÐ¸Ð¾Ð½Ð½ÑÐµ Ð¿ÑÐ¾ÑÐµÑÑÑ Ð² ÑÐ»ÐµÐºÑÑÐ¾Ð½Ð½ÑÑ Ð¸ Ð¿Ð¾Ð»ÑÐ¿ÑÐ¾Ð²Ð¾Ð´Ð½Ð¸ÐºÐ¾Ð²ÑÑ Ð¿ÑÐ¸Ð±Ð¾ÑÐ°Ñ". ÐÐ¾ÑÐ¾Ð±Ð¸Ðµ ÑÐ¾Ð´ÐµÑÐ¶Ð¸Ñ Ð¾Ð¿Ð¸ÑÐ°Ð½Ð¸Ðµ Ð»Ð°Ð±Ð¾ÑÐ°ÑÐ¾ÑÐ½Ð¾Ð¹ ÑÑÑÐ°Ð½Ð¾Ð²ÐºÐ¸ Ð¸ Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ñ ÑÑÐµÐ±Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÑ "Ð§Ð°ÑÑÐ¾ÑÐ½ÑÐ¹ ÑÑÐ¼ Ð³ÐµÐ½ÐµÑÐ°ÑÐ¾ÑÐ° Ð½Ð° Ð´Ð¸Ð¾Ð´Ðµ ÐÐ°Ð½Ð½Ð°", Ð° ÑÐ°ÐºÐ¶Ðµ ÑÐµÐ¾ÑÐµÑÐ¸ÑÐµÑÐºÑÑ ÑÐ°ÑÑÑ, Ð² ÐºÐ¾ÑÐ¾ÑÐ¾Ð¹ Ð¸Ð· ÑÐµÑÐµÐ½Ð¸Ñ ÑÐºÐ¾ÑÐ¾ÑÐµÐ½Ð½ÑÑ ÑÑÐ°Ð²Ð½ÐµÐ½Ð¸Ð¹ Ð¿Ð¾Ð»ÑÑÐµÐ½Ñ Ð²ÑÑÐ°Ð¶ÐµÐ½Ð¸Ñ Ð´Ð»Ñ ÑÐ»ÑÐºÑÑÐ°ÑÐ¸Ð¸ Ð°Ð¼Ð¿Ð»Ð¸ÑÑÐ´Ñ Ð¸ ÑÐ°ÑÑÐ¾ÑÑ Ð´Ð¸Ð¾Ð´Ð½Ð¾Ð³Ð¾ Ð¡ÐÐ§-Ð³ÐµÐ½ÐµÑÐ°ÑÐ¾ÑÐ°, Ð¸Ð¼ÐµÑÑÐ¸Ñ Ð°Ð´Ð´Ð¸ÑÐ¸Ð²Ð½Ð¾Ðµ Ð¸ Ð¼Ð¾Ð´ÑÐ»ÑÑÐ¸Ð¾Ð½Ð½Ð¾Ðµ Ð¿ÑÐ¾Ð¸ÑÑÐ¾Ð¶Ð´ÐµÐ½Ð¸Ðµ; Ð¾Ð¿Ð¸ÑÐ°Ð½Ñ Ð¼ÐµÑÐ¾Ð´Ñ Ð¸Ð·Ð¼ÐµÑÐµÐ½Ð¸Ñ ÑÐ»ÑÐºÑÑÐ°ÑÐ¸Ð¸ ÑÐ°ÑÑÐ¾ÑÑ.
description: ÐÐµÑÐ°ÑÐ°ÐµÑÑÑ Ð¿Ð¾ ÑÐµÑÐµÐ½Ð¸Ñ ÑÐµÐ´Ð°ÐºÑÐ¸Ð¾Ð½Ð½Ð¾-Ð¸Ð·Ð´Ð°ÑÐµÐ»ÑÑÐºÐ¾Ð³Ð¾ ÑÐ¾Ð²ÐµÑÐ° Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¾Ð³Ð¾ Ð³Ð¾ÑÑÐ´Ð°ÑÑÑÐ²ÐµÐ½Ð½Ð¾Ð³Ð¾ ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¾Ð³Ð¾ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑÐ°.
Classical spin systems and the quantum stabilizer formalism: general mappings and applications
Creators: name: Hübener, R.
name: Nest, M. Van den
name: Dür, W.
name: Briegel, H. J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present general mappings between classical spin systems and quantum physics. More precisely, we show how to express partition functions and correlation functions of arbitrary classical spin models as inner products between quantum stabilizer states and product states, thereby generalizing mappings for some specific models established in [Phys. Rev. Lett. 98, 117207 (2007)]. For Ising- and Potts-type models with and without external magnetic field, we show how the entanglement features of the corresponding stabilizer states are related to the interaction pattern of the classical model, while the choice of product states encodes the details of interaction. These mappings establish a link between the fields of classical statistical mechanics and quantum information theory, which we utilize to transfer techniques and methods developed in one field to gain insight into the other. For example, we use quantum information techniques to recover well known duality relations and local symmetries of classical models in a simple way, and provide new classical simulation methods to simulate certain types of classical spin models. We show that in this way all inhomogeneous models of q-dimensional spins with pairwise interaction pattern specified by a graph of bounded tree-width can be simulated efficiently. Finally, we show relations between classical spin models and measurement-based quantum computation.
description: 24 pages, 5 figures, minor corrections, version as accepted in JMP
title: ÐÐ¿ÑÐ¸Ð¼Ð¸Ð·Ð°ÑÐ¸Ñ ÑÐ¾Ð²Ð¼ÐµÑÑÐ½Ð¾Ð¹ ÐºÐ¾Ð¼Ð¿Ð¸Ð»ÑÑÐ¸Ð¸ Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼ Ð½Ð° ÑÐ·ÑÐºÐ°Ñ Java Ð¸ Kotlin
title: Ð¼Ð°Ð³Ð¸ÑÑÐµÑÑÐºÐ°Ñ Ð´Ð¸ÑÑÐµÑÑÐ°ÑÐ¸Ñ
titleType: Subtitle
Creators: name: ÐÐ°ÑÐ°ÑÑÐ½ÑÐºÐ¸Ð¹, ÐÐ»ÐµÐºÑÐ°Ð½Ð´Ñ
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: 2017
Subjects: Java, ÑÐ·ÑÐº Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ
ÐÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ ÑÐ·ÑÐºÐ¸
Kotlin
ÑÐ¾Ð²Ð¼ÐµÑÑÐ½Ð°Ñ ÐºÐ¾Ð¼Ð¿Ð¸Ð»ÑÑÐ¸Ñ
Ð°Ð±ÑÑÑÐ°ÐºÑÐ½Ð¾Ðµ ÑÐ¸Ð½ÑÐ°ÐºÑÐ¸ÑÐµÑÐºÐ¾Ðµ Ð´ÐµÑÐµÐ²Ð¾

description: Kotlin - ÑÐ¾Ð²ÑÐµÐ¼ÐµÐ½Ð½ÑÐ¹ ÑÑÐ°ÑÐ¸ÑÐµÑÐºÐ¸ ÑÐ¸Ð¿Ð¸Ð·Ð¸ÑÐ¾Ð²Ð°Ð½Ð½ÑÐ¹ Ð¼ÑÐ»ÑÑÐ¸Ð¿Ð°ÑÐ°Ð´Ð¸Ð³Ð¼Ð°Ð»ÑÐ½ÑÐ¹ ÑÐ·ÑÐº Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ. ÐÐ´Ð½Ð¸Ð¼ Ð¸Ð· Ð³Ð»Ð°Ð²Ð½ÑÑ Ð´Ð¾ÑÑÐ¾Ð¸Ð½ÑÑÐ² Kotlin ÑÐ²Ð»ÑÐµÑÑÑ Ð¸Ð½ÑÐµÑÐ¾Ð¿ÐµÑÐ°Ð±ÐµÐ»ÑÐ½Ð¾ÑÑÑ Ñ Java. ÐÐ¾ÑÑÐ¾Ð¼Ñ Ð·Ð°Ð´Ð°ÑÐ° ÑÑÑÐµÐºÑÐ¸Ð²Ð½Ð¾Ð¹ ÑÐ¾Ð²Ð¼ÐµÑÑÐ½Ð¾Ð¹ ÐºÐ¾Ð¼Ð¿Ð¸Ð»ÑÑÐ¸Ð¸ Kotlin Ð¸ Java ÑÐ²Ð»ÑÐµÑÑÑ ÐºÑÐ°Ð¹Ð½Ðµ Ð²Ð°Ð¶Ð½Ð¾Ð¹ Ð¸ Ð°ÐºÑÑÐ°Ð»ÑÐ½Ð¾Ð¹. Ð ÑÐ°Ð±Ð¾ÑÐµ Ð²ÑÑÐ²Ð»ÐµÐ½Ñ Ð½ÐµÐ´Ð¾ÑÑÐ°ÑÐºÐ¸ ÑÑÑÐµÑÑÐ²ÑÑÑÐµÐ³Ð¾ Ð¼ÐµÑÐ°Ð½Ð¸Ð·Ð¼Ð° ÑÐ¾Ð²Ð¼ÐµÑÑÐ½Ð¾Ð¹ ÐºÐ¾Ð¼Ð¿Ð¸Ð»ÑÑÐ¸Ð¸, Ð° ÑÐ°ÐºÐ¶Ðµ ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½ ÐºÐ¾Ð¼Ð¿Ð¾Ð½ÐµÐ½Ñ ÐºÐ¾Ð¼Ð¿Ð¸Ð»ÑÑÐ¾ÑÐ° Kotlin, Ð¾ÑÑÑÐµÑÑÐ²Ð»ÑÑÑÐ¸Ð¹ Ð²Ð·Ð°Ð¸Ð¼Ð¾Ð´ÐµÐ¹ÑÑÐ²Ð¸Ðµ Ñ Ð±Ð¸Ð½Ð°ÑÐ½ÑÐ¼Ð¸ Ð¸ Java ÑÐ»ÐµÐ¼ÐµÐ½ÑÐ°Ð¼Ð¸ Ð½Ð° Ð¾ÑÐ½Ð¾Ð²Ðµ ÑÐ¸Ð¼Ð²Ð¾Ð»Ð¾Ð² Ð¸ Ð°Ð±ÑÑÑÐ°ÐºÑÐ½ÑÑ ÑÐ¸Ð½ÑÐ°ÐºÑÐ¸ÑÐµÑÐºÐ¸Ñ Ð´ÐµÑÐµÐ²ÑÐµÐ² ÐºÐ¾Ð¼Ð¿Ð¸Ð»ÑÑÐ¾ÑÐ° Java. ÐÐ¾Ð¼Ð¿Ð¾Ð½ÐµÐ½Ñ Ð¿ÑÐ¾ÑÐµÑÑÐ¸ÑÐ¾Ð²Ð°Ð½ Ð½Ð° Ð¸Ð¼ÐµÑÑÐµÐ¹ÑÑ Ð±Ð°Ð·Ðµ Ð¿ÑÐ¾ÐµÐºÑÐ¾Ð². ÐÐ¾Ð»ÑÑÐµÐ½Ñ ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÑ, Ð´Ð¾ÐºÐ°Ð·ÑÐ²Ð°ÑÑÐ¸Ðµ ÑÑÑÐµÐºÑÐ¸Ð²Ð½Ð¾ÑÑÑ ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½Ð½Ð¾Ð³Ð¾ ÐºÐ¾Ð¼Ð¿Ð¾Ð½ÐµÐ½ÑÐ°.
Nature of a topological quantum phase transition in a chiral spin liquid model
Creators: name: Chung, Suk Bum
name: Yao, Hong
name: Hughes, Taylor L.
name: Kim, Eun-Ah
Publisher: name: arXiv
Year: 2009
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study the finite temperature nature of a quantum phase transition between an Abelian and a non-Abelian topological phase in an exactly solvable model of a chiral spin liquid. By virtue of the exact solvability, this model can serve as a testbed for developing better measures for describing topological quantum phase transitions. We characterize this phase transition in terms of the global flux and entanglement entropy, and discuss to what extent the existence of a topologically ordered ground state with non-Abelian excitations is revealed at finite temperature.
description: 5 pages, 5 figures
title: Atomic insight into hydration shells around facetted nanoparticles
Creators: name: Thomä, Sabrina
name: Krauß, Sebastian W.
name: Eckardt, Mirco
name: Chater, Phil
name: Zobel, Mirijam
Publisher: name: University of Bayreuth
Year: 2019
Subjects: subject: 530
subject: 540

description: Nanoparticles in solution interact with their surroundings via hydration shells. Although the structure of these shells is used to explain nanoscopic properties, experimental structural insight is still missing. Here we show how to access the hydration shell structures around colloidal nanoparticles in scattering experiments. For this, we synthesize variably functionalized magnetic iron oxide nanoparticle dispersions. Irrespective of the capping agent, we identify three distinct interatomic distances within 2.5 Å from the particle surface which belong to dissociatively and molecularly adsorbed water molecules, based on theoretical predictions. A weaker restructured hydration shell extends up to 15 Å. Our results show that the crystal structure dictates the hydration shell structure. Surprisingly, facets of 7 and 15 nm particles behave like planar surfaces. These findings bridge the large gap between spectroscopic studies on hydrogen bond networks and theoretical advances in solvation science.
title: Quantifying rock weakening due to decreasing calcite mineral content by numerical simulations
Creators: name: Wetzel, Maria
name: Kempka, Thomas
name: Kühn, Michael
Publisher: name: Universität Potsdam
Year: 2021
Subjects: subject: 600 Technik, Technologie

description: The quantification of changes in geomechanical properties due to chemical reactions is of paramount importance for geological subsurface utilisation, since mineral dissolution generally reduces rock stiffness. In the present study, the effective elastic moduli of two digital rock samples, the Fontainebleau and Bentheim sandstones, are numerically determined based on micro-CT images. Reduction in rock stiffness due to the dissolution of 10% calcite cement by volume out of the pore network is quantified for three synthetic spatial calcite distributions (coating, partial filling and random) using representative sub-cubes derived from the digital rock samples. Due to the reduced calcite content, bulk and shear moduli decrease by 34% and 38% in maximum, respectively. Total porosity is clearly the dominant parameter, while spatial calcite distribution has a minor impact, except for a randomly chosen cement distribution within the pore network. Moreover, applying an initial stiffness reduced by 47% for the calcite cement results only in a slightly weaker mechanical behaviour. Using the quantitative approach introduced here substantially improves the accuracy of predictions in elastic rock properties compared to general analytical methods, and further enables quantification of uncertainties related to spatial variations in porosity and mineral distribution.
description: Postprints der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe; 1092