90 Result(s)
within
Qi** Zhai
Earth Sciences, general
Science, Humanities and Social Sciences, multidisciplinary
-
Article
Late Mesoarchean crust growth event: evidence from the ca. 2.8 Ga granodioritic gneisses of the **aoqinling area, southern North China Craton
Recently, more attention has been paid to Precambrian magma events and crustal growth of the North China Craton (NCC), accompanying with controversy in activity stages and dynamic mechanism. In this study, we ...
-
Article
Scalable production of self-supported WS2/CNFs by electrospinning as the anode for high-performance lithium-ion batteries
WS2/carbon nanofibers (WS2/CNFs) are obtained by a simple electrospinning method in which few-/single-layer WS2 is uniformly embedded in carbon fibers. When used as the active anode material for Li-ion cells, th...
-
Article
Cytocompatible 3D chitosan/hydroxyapatite composites endowed with antibacterial properties: toward a self-sterilized bone tissue engineering scaffold
Bone tissue scaffolds based on bioactive polymer–hydroxyapatite composites have caused infections that seriously limit their extended application. In this study, we proposed a practical ion substitution meth...
-
Article
Numerical analysis of the two-phase pressure drop and liquid distribution in single-screw expander prototype
In this paper, the numerical simulations have been carried out to evaluate the two-phase pressure drop and liquid distribution in screw channel. The numerical models are validated against the present experimen...
-
Article
Low melting point nanocrystalline Sn–Ag solder synthesized by a refined chemical reduction method
The commercial market of Sn–Pb solder is gradually decreasing due to its toxicity, calling for Pb-free substitute materials. Sn–Ag alloy is a potential candidate in terms of good mechanical property. The major...
-
Article
Dynamics of a qubit—TLS system under resonant microwave driving
We demonstrate the effect of different coupling strengths between a microscopic two-level system (TLS) and a microwave field on the dynamics of a qubit—TLS system when the bipartite system is subject to resona...
-
Article
Undercooling evolution of pure Sn droplets in various atmospheres based on fast scanning calorimetry
Undercooling of Sn droplets in different atmospheres was studied by fast scanning calorimetry (FSC) at cooling rate of 1,000 K/s. It is found that the undercooling decreased with increasing partial pressure of...
-
Article
Numerical modeling and simulation of temperature distribution uncertainty subject to ferromagnetic thermoseeds hyperthermia
In the process of ferromagnetic thermoseeds mediated magnetic induction hyperthermia, the temperature distribution in the tumor region is a key factor to determine the therapy effect. During the preoperative t...
-
Article
Discovery of marine fossils in the upper part of the Permian Linxi Formation in Lo**ian, **ngmeng area, China
Two important geological issues have a long history of debate in the **ngmeng area. The first concerns the final closure of the North China plate, Siberia plate and several intermediate massifs in the area, an...
-
Article
Open AccessDevelopment of a new method for analyzing free aluminum ions (Al3+) in seafood using HPLC-ICP-MS
This paper presents a novel method for simultaneous online examination of free aluminum ions (Al3+) in seafood, using solid-phase extraction and high-performance liquid chromatography online with inductively coup...
-
Article
Open AccessCharacterization and cloning of a brittle culm mutant (bc88) in rice (Oryza sativa L.)
This study characterizes a brittle culm (bc88) mutant of rice (Oryza sativa L.) obtained by ethylene methylsulfonate (EMS)-in-duced mutagenesis of Wuyun**g 7. The bc88 mutant exhibits a diversity of pleiotropic ...
-
Article
Open AccessThe radiolytic behavior and mechanism of calixarene crown ether under γ-irradiation
Bis(2-propyloxy)calix[4]crown-6 (BPC6) is an effective separation agent for cesium removing from spent nuclear fuel. The study on radiolytic behavior of BPC6 itself under γ-irradiation was required for evaluating...
-
Article
Open AccessThermodynamic properties and microstructural characteristics of binary Ag-Sn alloys
The liquidus and solidus temperatures and enthalpy of fusion for Ag-Sn alloys are systematically measured within the whole composition range by differential scanning calorimetry (DSC). The measured enthalpy of...
-
Article
Open AccessDistribution, fluxes and decadal changes of nutrients in the Jiulong River Estuary, Southwest Taiwan Strait
The Jiulong River Estuary (JRE) is a typical subtropical macro-tide estuary on the southwest coast of the Taiwan Strait (TWS), which has been greatly impacted by human activities over the past 30 years. To und...
-
Article
Open AccessHe-Ar isotope geochemistry of the Yaoling-Meiziwo tungsten deposit, North Guangdong Province: Constraints on Yanshanian crust-mantle interaction and metallogenesis in SE China
Isotopic abundances and ratios of He and Ar found in inclusion fluids in pyrites formed in the Yaoling-Meiziwo tungsten mineralization epoch show that the concentration of 4He varies widely, from 1.54×10−7 cm3 ST...
-
Article
Open AccessCoastal acidification in summer bottom oxygen-depleted waters in northwestern-northern Bohai Sea from June to August in 2011
Dissolved oxygen (DO) and pH in the central part of the Bohai Sea were surveyed in late June and late August, 2011. During the June cruise, the bottom DO was in the range of 215–290 μmol-O2 kg−1 (i.e. 85%–115% of...
-
Article
Open AccessAge of the Miyun dyke swarm: Constraints on the maximum depositional age of the Changcheng System
A group of NE-trending (∼30°) mafic dykes, termed Miyun swarm herein, are distributed around the Miyun Reservoir, northern China, and have individual widths of over 40 m, and lengths of up to 8000 m. Baddeleyi...
-
Article
Open AccessDeformation induced structural evolution in bulk metallic glasses
The structural behavior of binary Cu50Zr50 and ternary Cu50Zr45Ti5 bulk metallic glasses (BMGs) under applied stress was investigated by means of in-situ high energy X-ray synchrotron diffraction. The components ...
-
Article
Open AccessDynamic solidification of Sn-38.1% Pb eutectic alloy within ultrasonic field
The dynamic solidification of Sn-38.1% Pb eutectic alloy within an ultrasonic field is investigated at a frequency of 35 kHz. As the sample height H is reduced, the effect of ultrasound on macrosegregation become...
-
Article
Size-dependent undercooling of pure Sn by single particle DSC measurements
The size-dependent solidification undercooling was investigated for single micro-sized particles of pure Sn employing differential scanning calorimeter (DSC). The particles were obtained from a solvent-encapsu...
