Results 81 to 90 of about 14,643 (153)
Large Amplitude Photometric Variability of the Candidate Protoplanet TMR-1C
, 2010 In their HST/NICMOS observations, Terebey et al. 1998 detected a candidate protoplanet, TMR-1C, that lies at a separation of about 10" (~1000 AU) from the Class I protobinary TMR-1 (IRAS 04361+2547).
Allard +35 more
core +1 more source
Environmental Quality Management, Volume 34, Issue 4, Summer 2025.ABSTRACT This study navigates the complex intersection of fiscal policy, governance quality, and environmental sustainability within Sub‐Saharan Africa (SSA). Utilizing a dataset from 2005 to 2020 encompassing 33 SSA countries, the study employs the environmental load capacity factor (LCF) to assess environmental sustainability within the STIRPAT ...
Kingsley Ikechukwu Okere +3 more
wiley +1 more source
In Memoriam: My Teacher (75th Birthday Anniversary of R.S. Gabyashev)
Поволжская археология, 2016 This is an obituary notice on Rustem S. Gabyashev, a prominent archaeologist who made a substantial contribution to the studies of Stone Age and early Metal cultures in the Volga-Kama region.
Shipilov Anton V.
doaj
The Orbit of the Companion to HD 100453A: Binary-Driven Spiral Arms in a Protoplanetary Disk
, 2018 HD 100453AB is a 10+/-2 Myr old binary whose protoplanetary disk was recently revealed to host a global two-armed spiral structure. Given the relatively small projected separation of the binary (1.05", or ~108 au), gravitational perturbations by the ...
Apai, Daniel +11 more
core +1 more source
Can dead zones create structures like a transition disk?
, 2016 [Abridged] Regions of low ionisation where the activity of the magneto-rotational instability is suppressed, the so-called dead zones, have been suggested to explain gaps and asymmetries of transition disks.
Birnstiel, Til +3 more
core +1 more source
Medieval Pottery Ware with an Admixture of Crushed Shell from Nizhny Novgorod Volga Region
Поволжская археология, 2019 The paper features the results of a comparative technical, technological and morphological study of two groups of medieval pottery ceramics from Kurmysh-4 settlement - with a gruss or sand admixture, and an addition of crushed shell.
Gribov Nikolay N.
doaj +1 more source
Multi-wavelength observations of planet forming disks: Constraints on planet formation processes
, 2017 Our understanding of protoplanetary disks has greatly improved over the last decade due to a wealth of data from new facilities. Unbiased dust surveys with Spitzer leave us with good constraints on the dust dispersal timescale of small grains in the ...
Antonellini, Stefano +4 more
core
Characteristics of stone toll-kit of the Late Eneolithic in the Ik and Belaya interfluve
Поволжская археология, 2018 The author attempts to summarize the available series of stone artifacts obtained as a result of studies of Late Eneolithic settlements located on the Iksa-Bel interfluve. The study of stone inventory allows to reveal the local typological, technological,
Shipilov Anton V.
doaj +1 more source
Optimal Emission Policy under the Risk of Irreversible Pollution [PDF]
We consider an optimal consumption and pollution problem that has two important features. Environmental damages due to economic activities may be irreversible and the level at which the degradation becomes irreversible is unknown. Particular attention is
Alain Ayong Le Kama +2 more
core
Empirical Temperature Measurement in Protoplanetary Disks
, 2018 Accurate measurement of temperature in protoplanetary disks is critical to understanding many key features of disk evolution and planet formation, from disk chemistry and dynamics, to planetesimal formation.
Boehler, Yann +2 more
core +1 more source