Results 71 to 80 of about 8,457 (259)

Rose quartz

, 1988
Caption: "Mine Site - Rose Quartz. Black Hills NF, Custer District. R-02, 08-88.
Grove, Keith L.
core  

Unravelling the Secret of Sulfur Confinement and High Sulfur Utilization in Hybrid Sulfur‐Carbons

Advanced Materials, EarlyView.
Thermal condensation of inverse vulcanized sulfur‐carbon hybrids enables a bottom‐up sulfur confinement strategy, in which a protective carbon phase is progressively constructed around sulfur species. The resulting carbon nanodomains covalently tether sulfur chains and stabilize radical intermediates. This integrated architecture effectively suppresses
Tim Horner, Enis Oğuzhan Eren, Elif Begüm Yılmaz, Jiyong Kim, Ernesto Scoppola, Alexandros Vasileiadis, Nadezda V. Tarakina, Markus Antonietti, Paolo Giusto, Evgeny Senokos   +9 more
wiley   +1 more source

Transport of Fe‐Based Nanoparticles in Porous Media Facilitated by Xanthan Gum: Non‐Monotonic Relation Between Transport Efficiency and Flow Velocity

Water Resources Research
The transport of Fe‐based nanoparticles (Fe‐NPs) in porous media is of vital importance for application of Fe‐NPs in groundwater remediation, yet their low mobility remains an open question.
Guansheng Liu, Lili Huo, Yongming Wu, Zhibing Yang, Jiacheng Xia, Hua Zhong   +5 more
doaj   +1 more source

Aroma Sensing of Roses Using an odor sensor of Quartz Crystal Resonators

Journal of Japan Association on Odor Environment, 2005
野外に咲く20種類のバラの香りを，応答特性が異なる6つの水晶振動子型においセンサアレイにより測定した．花弁部分に捕集袋を被せることにより気体のまま捕集した香りを，純空気に対する応答パターンを基準とした変化量として測定した．濃度によらず芳香の種類で区別するための特徴量を定義し，この特徴量を主成分分析法とk－平均クラスタリング法で分析した結果，品種との関連からバラの香りを複数個に分類できる可能性を示した．また，バラの香りを大気と揮発物質の混合体（におい成分）として考えると，バラの香りの分類には，水晶振動子上の吸着膜の化学的な応答特性が反映されている可能性を示した．
TAKANO, Mitsuo, SASAKI, Katsunori, MUTO, Takeru, SUGIMOTO, Iwao, MITACHI, Seiko   +4 more
openaire   +2 more sources

Ion‐Reconfigurable “N”‐Shaped Antiambipolar Behavior in Organic Electrochemical Transistors

Advanced Materials, EarlyView.
A unique N‐shaped negative differential transconductance (NDT) characteristics is demonstrated in single‐polymer organic electrochemical transistors through a sequential doping–redox–doping process driven by iodide ions. This redox‐driven mechanism enables low‐voltage, ion‐controlled reconfigurability and tunable current modulation, allowing seamless ...
Debdatta Panigrahi, Daniele Zucchelli, Zeinab Hamid, Christina Kousseff, Arup Sarkar, Aristea Pavlou, Zhitian Ling, Somayeh Kashani, Iain McCulloch, Paul W. M. Blom, Fabrizio Torricelli, Paschalis Gkoupidenis   +11 more
wiley   +1 more source

Ultrafast Vertical Organic Electrochemical Transistors With Ion‐Permeable Conductive Polymer Top Electrodes

Advanced Materials, EarlyView.
Vertical organic electrochemical transistors (vOECTs) are limited in speed by ion‐impermeable metal electrodes that slow ion injection. Using ion‐permeable PBFDO top electrodes allows direct vertical ion injection into BBL channels, achieving high current densities (>400 A cm−2), large on/off ratios (>106), and ultrafast switching in 28 µs. This sets a
Han‐Yan Wu, Yingxue An, Luigi Fabiano, Qifan Li, Qingqing Wang, Feng Zhang, Wenlong Jin, Miao Xiong, Junpeng Ji, Ugo Bruno, Grzegorz Greczynski, Grazia Maria Lucia Messina, Xianjie Liu, Chi‐Yuan Yang, Simone Fabiano   +14 more
wiley   +1 more source

Rose quartz processing

, 1988
Caption: "Mine Site - Gem Quality Rose Quartz and Garden Quality Quartz. Black Hills NF, Custer District. R-02, 08-88.
Grove, Keith L.
core  

Origin of hematite carrying a Late Paleozoic remagnetization in a quartz sandstone bed from the Silurian Rose Hill Formation, Virginia, USA

, 1994
Paleomagnetic and petrographic studies of a quartz sandstone bed from the Silurian Rose Hill Formation of the Central Appalachians show that hematite carrying a Late Paleozoic remagnetization is authigenic. Comparison of paleopole positions from the Rose
McCabe, Chad, Schedl, Andrew, Lu, Gang, Henry, Darrell J.   +3 more
core   +1 more source

Positively Charged Polymer‐Brush MOFs for Large‐Area, Pressure‐Resistant Gas Separation Membranes

Advanced Materials, EarlyView.
A universal POPA strategy enables positively charged polymer‐brush MOFs with self‐adaptive interfacial interlocking to resist aggregation under fast processing. This design ensures seamless dispersion within large‐area selective layers, achieving 1 m‐wide roll‐to‐roll fabrication of pressure‐resistant MMCMs with tunable CO2 separation performance ...
Yi Yang, Ye Yuan, Yuxiu Sun, Fei Shi, Chenyang Song, Weifan Wang, Qinghua Li, Menglong Sheng, Zhihua Qiao, Jingwei Hou, Anthony K. Cheetham, Zhi Wang   +11 more
wiley   +1 more source

Rose quartz mine

, 1988
Caption: "Mine Site - Rose Quartz, USFS Inspector. Black Hills NF, Custer District. R-02, 08-88. 3969KR.
Grove, Keith L.
core