Results 51 to 60 of about 393,222 (351)

Changes of Periphyton Abundance and Biomass Driven by Factors Specific to Flooding Inflow in a River Inlet Area in Erhai Lake, China

Frontiers in Environmental Science, 2021
Periphyton is an ecological essential in freshwater lakes and rivers. Its abundance and biomass are very dynamic in various habitats and subject to various factors, for example, nutrient and light.
Wenjing Ren, Wenjing Ren, Yiqian Yao, Yiqian Yao, Zhonghai Zhang, Zhonghai Zhang, Yu Cao, Changbo Yuan, Changbo Yuan, Hao Wang, Hao Wang, Qing Chuan Chou, Qing Chuan Chou, Leyi Ni, Xiaolin Zhang, Te Cao   +15 more
doaj   +1 more source

New insights into the dust formation of oxygen-rich AGB stars [PDF]

, 2013
We observed the AGB stars S Ori, GX Mon and R Cnc with the MIDI instrument at the VLTI. We compared the data to radiative transfer models of the dust shells, where the central stellar intensity profiles were described by dust-free dynamic model ...
Boboltz, D. A., Fossat, E., Karovicova, I., Ohnaka, K., Scholz, M., Wittkowski, M.   +5 more
core   +2 more sources

Interactions between Molten High‐Silicon Electrical Steels and Carbon‐Bonded MgO Refractories Based on Recyclates

Advanced Engineering Materials, EarlyView.
This study examines how several molten high‐silicon electrical steels interact with both conventional and recycled MgO–C refractories. For this, various immersion experiments are conducted. In addition to infiltration, a number of mechanisms are identified and explained that control the corrosion of the refractory material.
Lukas Neubert, Matheus Roberto Bellé, Anton Yehorov, Anhelina Mospan, Till M. J. Stadtmüller, Seetharaman Sridhar, Christos G. Aneziris, Olena Volkova   +7 more
wiley   +1 more source

Simultaneous spectrophotometric determination of phosphate and silicate by using partial least squares method [PDF]

شیمی کاربردی روز, 2009
A very sensitive, simple and selective spectrophotometric method for simultaneous determination of phosphate and silicate based on formation of phospho- and silicomolybdenum blue complexes in the presence of ascorbic acid is described.
Mehdi Nekoei, Majid Mohammadhossein, Hasan Bagheri   +2 more
doaj   +1 more source

Combustion Synthesis of Nanocrystalline Ba_1.3Ca_0.7SiO₄ Semiconductors Using Urea as an Energy Efficient Fuel

Inorganics, 2023
The τ-phase Ba1.3Ca0.7SiO4 alkaline earth silicate powders were synthesized using the solution combustion technique. For this purpose, metal nitrate–urea mixtures were used as an oxidant and a fuel.
Desta R. Golja, Francis B. Dejene, Megersa K. Hussen, Jung Yong Kim   +3 more
doaj   +1 more source

Mid-infrared interferometric variability of DG Tau: implications for the inner-disk structure [PDF]

, 2017
Context. DG Tau is a low-mass pre-main sequence star, whose strongly accreting protoplanetary disk exhibits a so-far enigmatic behavior: its mid-infrared thermal emission is strongly time-variable, even turning the 10 $\mu$m silicate feature from ...
Chen, L., Dullemond, C. P., Gabányi, K. É., Henning, Th., Jaffe, W., Juhász, A., Kóspál, Á., Menu, J., Mosoni, L., Moór, A., Ratzka, Th., Sipos, N., van Boekel, R., Varga, J., Ábrahám, P.   +14 more
core   +3 more sources

Analysis of the Direct Shear Test and Microstructure of the Lunar Soil Simulant Solidified by Sodium Silicate [PDF]

, 2022
Qinyong Ma, Hanyan Wang
openalex   +1 more source

Interaction between Molten Al‐Killed Mn–B Steel and Carbon‐Bonded MgO Refractories Based on Recyclates

Advanced Engineering Materials, EarlyView.
High‐temperature interactions between low‐sulfur Al‐killed Mn–B steel and MgO–C refractories (0 and 50 wt% recyclates) are studied via finger immersion tests (1600 °C). Surface‐active elements influence infiltration. MgO/CaS layer forms, along with spinel and calcium silicate.
Matheus Roberto Bellé, Lukas Neubert, Anton Yehorov, Till M. J. Stadtmüller, Christos G. Aneziris, Olena Volkova   +5 more
wiley   +1 more source

Silicion supplementation increases the in vitro regeneration of oil palm (Elaeis guineensis Jacq.) somatic embryos [PDF]

Ciência e Agrotecnologia
The use of silicates in plant tissue culture has resulted in positive effects regarding the morphological, anatomical and physiological characteristics of in vitro plants. However, biological responses to this mineral are dose and genotype dependent. The
Lavínia Barbosa Oliveira, Sérgio Yoshimitsu Motoike, Sebastião Martins Filho, Kacilda Naomi Kuki, Lucas Amaral de Melo, Diego Ismael Rocha   +5 more
doaj   +1 more source

A Tale of Three Galaxies: Anomalous Dust Properties in IRASF10398+1455, IRASF21013-0739 and SDSSJ0808+3948

, 2014
On a galactic scale the 9.7um silicate emission is usually only seen in type 1 active galactic nuclei (AGNs). They usually also display a flat emission continuum at ~5--8um and the absence of polycyclic aromatic hydrocarbon (PAH) emission bands.
Hao, Lei, Li, Aigen, Xie, Yanxia
core   +1 more source