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One-dimensional Ca2RE8(SiO4)6O2: Pb2+, Dy3+ (RE = Y, Gd) nanobelts and microfibers were fabricated by a simple and cost-effective electrospinning method. X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), thermogravimetric and differential scanning calorimetry (TG-DSC), scanning electron microscopy (SEM), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), photoluminescence (PL) and low voltage cathodoluminescence (CL) were used to characterize the resulting samples. SEM and TEM results indicated that the width and the thickness of Ca2Gd8 (SiO4)6O2: Pb2+, Dy3+ nanobelts annealed at 1000degC for 4 h were 220-250 and 90-100 nm, respectively. The diameter of the Ca2Gd8(SiO4)6O2: Pb2+, Dy3+ microfibers annealed at 1000degC for 4 h was 140-190 nm. When the samples were excited by ultraviolet (254 nm), the Pb2+ can sensitize the Gd3+ sublattice, and the energy can be efficiently transferred from Pb2+ to Dy3+ in Ca2Gd8(SiO4)6O2. Under low-voltage electron beams (4-6 kV) excitation, the Ca2RE8(SiO4)6O2: Pb2+, Dy3+ (RE = Y, Gd) samples showed strong white emission. The PL and CL intensities of Ca2Gd8(SiO4)6O2: Pb2+, Dy3+ microfibers were higher than those of Ca2Gd8(SiO4)6O2: Pb2+, Dy3+ nanobelts. The CIE chromaticity coordinates of Ca2Y8(SiO4)6O2: Pb2+, Dy3+ microfibers were x = 0.323, y = 0.333, very close to the ideal white region.

Abstract Based on the identification and enhancive processing of information about strata, structure, magmatite, and alteration in ore‐concentrated area in the eastern Tianshan, an exploration mode of remote sensing geology is established. The mode covers basic images composed of TM (7, 4, 1), Munsell space transformation for recognizing rock type, directional matched filtering for enhancing structures, multi‐layer separating and extracting weak alteration information. It will provide a rapid and effective method for geological mapping and metallogenic prediction in this region.

Abstract Based on specific well‐exposed rocks useful for high‐quality remote sensing interpretation in the gold‐prospecting area in the eastern Tianshan, this paper gives a detailed description of a remote sensing model for metallogenic prediction. The model reveals that multi‐spectral remote sensing data are integrated with high‐resolution remote sensing data, and enhanced extraction and visual description of weak remote sensing information are used for prospecting. This model has tested in the given gold deposit, and used successfully in Au‐Cu prospecting in the Kalatage area.

Abstract Based on the information of geology, geochemistry, geophysics and remote sensing, the GIS of multi‐source information is used to evaluate Cu, W and Au mineral resources in Northern Qilian, China. As the GIS evaluation system works out in the thinking of geological prospecting, its functions include file management, graph edition, database maintenance, information inquiry and comprehensive spatial analysis as well as prospecting target prognosis. Accordingly, the GIS evaluation system can be used directly and conveniently for inquiry and analysis of visual graphs or images.

Wuming is situated in the southern section of the Guangxi Zhuang Autonomous Region. It is an advanced xian in the movement to learn from Dazhai in agriculture. In 1976 it had a population of nearly 500,000, out of which 460,000 were peasants, and a cultivated area of approximately 850,000 mou.