Zobrazeno 1 - 10
of 8 112
pro vyhledávání: '"Ir spectra"'
Publikováno v:
Discover Geoscience, Vol 2, Iss 1, Pp 1-16 (2024)
Abstract Serpentine minerals, either polymorphs or polytypes (mostly chrysotile, lizardite and antigorite), are hardly distinguished in ophiolitic serpentinites and serpentinized peridotite unless sophisticated mineralogical tools are applied. Among
Externí odkaz:
https://doaj.org/article/d0693a01f072447caf4351859f2ebbd5
Autor:
Stefan T. Bromley
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 11 (2024)
Silicate dust is found in a wide range of astrophysical environments. Nucleation and growth of silicate dust grains in circumstellar environments likely involves species with diameters ranging from
Externí odkaz:
https://doaj.org/article/44bf2bef7d914a308fc61e6709beb5b7
Publikováno v:
Compounds, Vol 4, Iss 2, Pp 338-350 (2024)
The reaction of ZrCl4 or HfCl4 with excess 2-methylpropanoic acid when boiling under reflux has been studied. The formation of polynuclear Zr and Hf complexes of the composition M2O(i-C3H7CO2)6 during prolonged reflux of the reaction mixtures was fou
Externí odkaz:
https://doaj.org/article/79392fdd24344ed2bcfef94ef19fef7a
Publikováno v:
Molecules, Vol 29, Iss 22, p 5472 (2024)
Monomers of N-hydroxypyridine-2(1H)-thione were isolated in low-temperature matrices of solid normal hydrogen (n-H2). The matrix-isolated compound was irradiated with UV-B (λ = 305 nm) or UV-A (λ > 360 nm) light. Upon such irradiation, the initial
Externí odkaz:
https://doaj.org/article/9e89ca54f1204b2287d070570411423c
Autor:
Sakr, Mahmoud A.S. a, ⁎, Abdelsalam, Hazem b, c, ⁎⁎, Teleb, Nahed H. b, d, Saad, Mohamed A. a, Abd-Elkader, Omar H. e, Liu, Yushen f, Zhang, Qinfang b, ⁎⁎⁎
Publikováno v:
In Journal of Molecular Graphics and Modelling May 2025 136
Autor:
Alisher A. Kenbay, Oleg Yu. Golikov, Doctoral Student, Junior Researcher, Al- Farabi Kazakh National University, Almaty, 050040, Kazakhstan, sc, Darkhan E. Yerezhep
Publikováno v:
Naučno-tehničeskij Vestnik Informacionnyh Tehnologij, Mehaniki i Optiki, Vol 23, Iss 4, Pp 696-702 (2023)
A specialized low-temperature measuring cell with a cryogenic capillary system for infrared spectral analysis of ethanol developed by the authors is presented. The use of the created low-temperature cell is possible for further studies of the low-t
Externí odkaz:
https://doaj.org/article/8b7b18123b254412a8e902647145fc81
Publikováno v:
Конденсированные среды и межфазные границы, Vol 26, Iss 1 (2024)
The aim of the work is to study the influence of the 3-D printing process with the Hercules Original printer by sequentially applying polymer layers using the FDM (Fused Deposition Modeling) method on the microstructural and hydrophilic properties of
Externí odkaz:
https://doaj.org/article/423c0a4511cf47f2945c612a8d1b9bb0
Autor:
Balen Dražen, Petrinec Zorica
Publikováno v:
Geološki Anali Balkanskoga Poluostrva, Vol 84, Iss 1, Pp 5-16 (2023)
Infrared spectra (IR) in the O-H stretching region were recorded for natural tourmalines from the magmatic and magmatic-hydrothermal systems of Moslavačka Gora (Croatia). Samples of disseminated tourmaline (schorl) representing magmatic products wer
Externí odkaz:
https://doaj.org/article/3932c8373d35454b807731f92adde9ad
Publikováno v:
Acta Crystallographica Section E: Crystallographic Communications, Vol 79, Iss 1, Pp 19-23 (2023)
Reaction of Ni(NCS)2 with 3-methylpyridine in water leads to the formation of crystals of the title compound, [Ni(NCS)2(C6H7N)4]. All of them are of poor quality and non-merohedrally twinned but a refinement using data in HKLF-5 format leads to a rea
Externí odkaz:
https://doaj.org/article/f03a44f6995f4181a8a58308effa03cc
Autor:
S. R. Shah, K. J. Umrigar
Publikováno v:
Journal of Natural Fibers, Vol 19, Iss 15, Pp 12068-12079 (2022)
Decorticated ramie fiber (Variety R-1449) was degummed using different systems, namely, individual alkali, mix alkali, enzyme, mix enzyme, and peracetic acid to the optimal level of residual gum content. Further, the optimal degummed samples of vario
Externí odkaz:
https://doaj.org/article/7f82b538001d47608c2174d39820aaaa