514 research outputs found
Investigation of the adsorption characteristics of natural organic matter from typical Chinese surface waters onto alumina using quartz crystal microbalance with dissipation
No full textData source: Supplementary data, http://www.sciencedirect.com.access.library.unisa.edu.au/science/article/pii/S0304389412001963#appd002Abstract not availableMingquan Yan, Dongsheng Wang, Jiankun Xie, Chunxia Liu, Jixia Cheng, Christopher W.K. Chow, John van Leeuwe
Contextual Scaffolding in Secondary Geography Education: A Lesson Study of the Instruction of “The Middle East”
Full text linkThe utilization of instructional scaffolding is a crucial element in the process of imparting novel knowledge or skills to students. This approach involves the teacher providing and modifying support for students in order to optimize their classroom participation and academic outcomes. The present study offers an examination of a seventh-grade geography lesson focused on the Middle East. The lesson employs contextual scaffolding, supported by visual aids, throughout various teaching processes such as lesson introduction, classroom inquiry, review, and summary
Hydrothermal Synthesis of Lanthanide Fluorides LnF<sub>3</sub> (Ln = La to Lu) Nano-/Microcrystals with Multiform Structures and Morphologies
No full textLanthanide fluoride LnF3 (Ln = La to Lu) nano-/microcrystals with multiform crystal structures (hexagonal and orthorhombic) and morphologies (separated elongated nanoparticles, aggregated nanoparticles, polyhedral microcrystals) were successfully synthesized by a facile, effective, and environmentally friendly hydrothermal method. X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy, transmission electron microscopy, high-resolution transmission electron microscopy, and photoluminescence spectra were used to characterize the samples. The experimental results indicated that the use of NaBF4 is indispensable for obtaining LnF3 crystal structures. Furthermore, the organic additive trisodium citrate (Cit3-) has an obvious impact on the morphologies of the products to some degree. The possible formation mechanisms for LnF3 nano-/microcrystals are presented in detail. Additionally, we systematically investigated the luminescence properties of the LnF3:Eu3+ (Ln = La, Gd, and Lu) samples and found an efficient energy transfer from Gd3+ to Eu3+ in GdF3:Eu3+
Three new species of <I>Septobasidium</I> (<I>Septobasidiaceae</I>) from Gaoligong Mountains in China
No full textVolume: 112Start Page: 143End Page: 15
Two new species of <I>Septobasidium</I> (<I>Septobasidiaceae</I>) from Gaoligong Mountains in China
No full textVolume: 116Start Page: 395End Page: 40
Two new species of <I>Septobasidium</I> (<I>Septobasidiaceae</I>) from China
No full textVolume: 109Start Page: 477End Page: 48
<I>Septobasidium maesae</I> sp. nov. (<I>Septobasidiaceae</I>) from China
No full textVolume: 109Start Page: 103End Page: 10
<I>Septobasidium annulatum</I> sp. nov. (<I>Septobasidiaceae</I>) and <I>S. kameii</I> new to China
No full textVolume: 110Start Page: 239End Page: 24
ChemInform Abstract: Phosphine‐Free Palladium(II)‐Catalyzed Arylation of Naphthalene and Benzene with Aryl Iodides.
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