Showing 201 - 220 results of 327 for search '"quartz"', query time: 0.05s Refine Results
  1. 201

    Laser Ablation for Small Hepatocellular Carcinoma by Claudio Maurizio Pacella, Giampiero Francica, Giovanni Giuseppe Di Costanzo

    Published 2011-01-01
    “…Laser ablation (LA) represents one of currently available loco-ablative techniques: light is delivered via flexible quartz fibers of diameter from 300 to 600 μm inserted into tumor lesion through either fine needles (21g Chiba needles) or large-bore catheters. …”
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  2. 202

    Two-wavelength WDM multiplexers based on combined fiber structures by D. A. Ivanov, V. I. Nefedov

    Published 2021-08-01
    “…The most widely used are two-wavelength 1 × 2 WDM multiplexers/demultiplexers designed to separate and combine optical carriers with wavelengths of 1310 and 1550 nm, corresponding to the second and third transparency windows of quartz OF. It should be noted that multiplexers and demultiplexers are the same optical devices, which are spectrally selective splitters. …”
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  3. 203

    Study on the correlation between mobility and dispersion of different types of fibers in engineered cementitious composites (ECC) by Xiao Wang, Haowen Jing, Ruonan Deng, Bin Meng, Xiaolin Huo

    Published 2025-07-01
    “…In order to improve the crack resistance of traditional concrete, cement, silica fume, fly ash and quartz sand were used as the research objects. The dispersion of different types of fibers was characterized by Water washing method, Cross-sectional analysis method and Fluorescence analysis method. …”
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  4. 204

    Large-Scale Atmospheric Step-and-Repeat UV Nanoimprinting by Kentaro Ishibashi, Hiroshi Goto, Jun Mizuno, Shuichi Shoji

    Published 2012-01-01
    “…Nanostructures with widths and spacing patterns from 80 nm to 3 μm and 200 nm depth were formed using a quartz mold. Bubble defects were not observed, and residual layer uniformity was within 30 nm ±10%. …”
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  5. 205

    The Piesberg: A NW-German site of international importance for the Pennsylvanian (Late Carboniferous) by Angelika Leipner, Tobias Fischer, Patrick Chellouche

    Published 2021-06-01
    “…The high degree of maturity of the Piesberg strata, such as the presence of anthracitic coal, quartzite, and large quartz crystals, led to controversies over a possible underlying thermal anomaly. …”
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  6. 206

    Geological setting, geochemistry and mineralogy of lithium bearing pegmatites in South Western Mali, West Africa; a review by Elhadji Mory Traore, Akinade S. Olatunji, Mory Sidibe, Sory I. M Konate, N’Tcha Daniel Kouagou N’dah, George Lemewihbwen Ngiamte

    Published 2025-01-01
    “…They are characterized by minerals like potassic feldspar, spodumene, plagioclase, quartz, and white mica. Geochemical analysis reveals that the Bougouni pegmatites are silica-rich, resembling the Archean Tanco pegmatite, suggesting a more evolved magmatic history. …”
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  7. 207

    A Multicomponent Particle Model and Linear Fitting Calibration Method for Heterogeneous Rocks by Qifeng Guo, Ying Zhang, Xun Xi, Xu Wu, Meifeng Cai

    Published 2019-01-01
    “…., plagioclase, potash feldspar, quartz, and biotite) are built to simulate the behavior of the granite under compressive and tensile tests. …”
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  8. 208

    Investigation of Engineering Properties of Cement-Stabilized Calcareous Sand Foundation by Yuan Chai, Dai-Ping Jiang, Fu-Jiang Wang, Hai-Bo Lyu

    Published 2021-01-01
    “…It is found that: (1) the uniaxial compression strength of calcareous sand is higher than that of Guangzhou soft soil but lower than that of filter medium quartz sand; (2) the deformation of the calcareous sand under compression is mainly plastic, and the elastic deformation gradually increases with increasing cement content; (3) the apparent cohesion of calcareous sand increases, while internal friction angle decreases with increasing cement content; (4) cement-stabilized method can significantly improve the bearing capacity of calcareous sand foundation, especially for the saturated state. …”
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  9. 209

    Experimental Investigation on Microhydration and Micromechanical Properties of Cement-Sandy Soil Mixtures Reinforced with Cotton/linen-blended Fiber by Wei Ouyang, Nianjin Wang, Min Yang, Zeming Yu, Furong Zhang, Lingfeng Meng, Yahan Yang, Xiangfeng Lv

    Published 2022-01-01
    “…The results show that the peak unconfined compressive strength of the mixtures gradually increases with the quartz content of the matrix. The compressive strength of the matrix reaches a peak of 1.5938 MPa, an increase of 24.17%, when the cement and fiber contents were 3% and 1.5% (weight), respectively, with a fiber length of 9 mm. …”
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  10. 210

    MINERAL FORMS OF PHOSPHORUS IN OOIDAL IRON ORES OF THE MARSYATY DEPOSIT (NORTHERN URALS) by E.V. Belogub, K.A. Novoselov, A.I. Brusnitsyn, M.A. Rassomakhin, V.N. Bocharov

    Published 2024-12-01
    “…The maximum P2O5 content reaches 6.37 wt. % in a quartz sandstone interbed with ooids consisting of Fe3+ oxyhydroxides and is associated with authigenic fluorapatite. …”
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  11. 211

    Reservoir Characteristics of the Lower Silurian Longmaxi Shale in Zhaotong Region, Southern China by Chao Luo, Nanxin Yin, Hun Lin, Xuanbo Gao, Junlei Wang, Hanqing Zhu

    Published 2020-01-01
    “…According to core observation, X-ray diffraction analyses, and scanning electron microscopy (SEM) observations, the shale comprises primarily quartz, carbonate minerals, and clay minerals, with minor amounts of plagioclase, K-feldspar, and pyrite. …”
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  12. 212

    PM10 Source Identification: A Case of a Coastal City in Colombia by Leandro Gómez-Plata, Dayana Agudelo-Castañeda, Margarita Castillo, Elba C. Teixeira

    Published 2022-07-01
    “…Abstract This paper assesses the spatial variation of EC, OC, major, and trace elements in an industrialized coastal city, allowing identification and tracers of PM10 emission sources. 83 samples (24 h average) were collected on quartz filters during the dry season using high-volume samplers. …”
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  13. 213

    Mechanical and Microstructural Properties of Bamboo Fiber-Reinforced Concrete Containing a Blend of Waste Marble Powder and Waste Glass Powder by Dejene Mengesha Gelanew, Belachew Asteray Demiss

    Published 2023-01-01
    “…Moreover, scanning electron microscopy (SEM) showed a denser microstructure, whereas X-ray diffraction (XRD) illustrated portlandite, calcium aluminum silicate, quartz, and calcium silicate hydrate as common phases of the concrete structure. …”
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  14. 214

    Machining Path Optimization of Inductively Coupled Plasma Based on Surface Heat Transfer Model by Peiqi Jiao, Bin Fan, Qiang Xin, Xiang Wu, Hong Wang

    Published 2025-01-01
    “…Inductively coupled plasma (ICP), a non-contact optical processing method, has been widely used in the preparation of fused quartz. However, the thermal effect during processing inevitably affects the stability of the removal rate, reduces the processing accuracy, and restricts the further development of plasma processing. …”
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  15. 215

    Silica Induces Changes in Cytosolic Free Calcium, Cytosolic pH, and Plasma Membrane Potential in Bovine Alveolar Macrophages by Attila Tárnok, Thomas Schlüter, Ingeborg Berg, Günther Gercken

    Published 1997-01-01
    “…Short‐term incubation (10 min) of BAM with silica gel and quartz dust particles induced increases in the cytosolic free calcium concentration ([Ca2+]i), decreases in intracellular pH (pHi), and increases in plasma membrane potential (PMP). …”
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  16. 216

    Wintertime black carbon assessment in dhaka, Bangladesh: Integrated health risk analysis by A.K.M. Nayem, Shahid Uz Zaman, Farida Begum, Abdus Salam

    Published 2025-01-01
    “…Employing low-volume air samplers with Quartz filters and subsequent analysis with an Aethalometer (Soot scanner, OT21, USA), the study unveiled monthly average BC densities of 1.64 μg cm−2, concentrations of 4.99 μg m−3, and emissions of 0.038 μg J−1. …”
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  17. 217

    Contribution of Surface Treatment on Physical and Mechanical Properties of Recycled Concrete Aggregates by Brian Jacks Odero, Raphael N. Mutuku, Timothy Nyomboi, Zachary A. Gariy

    Published 2022-01-01
    “…XRD showed that calcite (CaCO₃), quartz, and portlandite phases were the majority in the untreated RCA. …”
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  18. 218

    Micro-Characterization of Indoor Deposited Particles Using FTIR, SEM-EDS, and XRD Techniques: A Case Study of a University Campus, Bangladesh by Mamun Mahmud, Kazi ABM Mohiuddin

    Published 2024-03-01
    “…The average crystallinity of studied atmospheric particles was found to be a minimum of 27.3% at RH and a maximum of 64.5% at NAB sites and the corresponding crystalline size was 11.10 nm and 42.92 nm respectively. Quartz mineral in the inorganic fraction of atmospheric particles was found predominantly in every sample which most likely originates from soil erosion, construction activities and vehicular emissions. …”
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  19. 219

    Wind Tunnel Tests of Wind-Induced Snow Distribution for Cubes with Holes by Xintong Jiang, Zhixiang Yin, Hanbo Cui

    Published 2019-01-01
    “…Therefore, a wind tunnel simulation was performed, in which quartz particles with an average particle size of 0.14 mm as snow particles were used, and cubes with dimensions of 100 mm × 100 mm × 100 mm each containing a hole with the size of 20 mm × 20 mm were employed as structures. …”
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  20. 220

    MINERALOGICAL AND GEOCHEMICAL FEATURES OF HEAVY CONCENTRATES FROM CREEKS OF THE NORTHWESTERN END OF THE OKHOTSK TERRANE (KHABAROVSK KRAI) by М.А. Pavlova, D.I. Smirnov, D.А. Guskov, S.V. Petrov, M.A. Rassomakhin, A.Yu. Nefyodova

    Published 2023-12-01
    “…Native gold grains in placers are yellow, small, mostly weak and medium-rounded, often with inclusions of quartz, feldspar, pyrite, iron oxides and hydroxides, and zircon. …”
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