Results 11 to 20 of about 11,708 (158)

Ultrahigh‐Strength Soft‐Magnetic NiFeCoAl Multi‐Principal Element Alloys Enabled by Multiscale Heterostructure Design

open access: yesRare Metals, Volume 45, Issue 4, April 2026.
ABSTRACT Soft‐magnetic materials (SMMs) are indispensable for electrification and sustainable energy systems, yet their inherent mechanical fragility fundamentally limits applications under severe mechanical stresses. Enhancing the yield strength of SMMs is essential to prevent the degradation in magnetic performance and failure from plastic ...
Nairan Wang   +6 more
wiley   +1 more source

ナスカ ダイチ ノ チケイ ブンルイズ ト チジョウエ [PDF]

open access: yes, 2007
ナスカ地上絵の考古学調査にかかわる地形分類図を試作した。目的にあわせて,3種類の縮尺精度の地形分類を例示できる。人工衛星QuickBird画像を画像処理して地形分類の指標とすることが,本章で述べる研究の中心であり,さらにこれらをナスカの地上絵の調査にどのように関連させることができるか,すなわち微地形分類によって分析できる地表面の変化速さ(安定度・不安定度)と地上絵との関係であり,地上絵の作成当時に土地条件が考慮されたのか否か,地上絵の損傷と土地条件(微地形) との関係 ...
阿子島 功
core   +1 more source

Leakage Current Dominated Piezocatalysis by Na(AlSi2O6)H2O Nanobelts: Highly Efficient U(VI) Solidification and N2 Conversion

open access: yesRare Metals, Volume 45, Issue 4, April 2026.
ABSTRACT Piezocatalysis has garnered unprecedented research enthusiasm for applications in energy and environmental fields, as it can harvest the tiny vibration energy from the natural environment and convert it into electrical energy to drive catalytic reactions.
Feixue Gao   +9 more
wiley   +1 more source

Comparative Evaluation of Chemical and Physical Expansive Agents in Cemented Paste Backfill: Expansion Behavior, Mechanical Response, and Microstructural Mechanisms

open access: yesRare Metals, Volume 45, Issue 4, April 2026.
ABSTRACT This study presents an assessment of four representative expansive additives—calcium sulphoaluminate–calcium oxide, magnesium oxide, sodium lauryl sulfate, and sodium abietate—and their effects on the expansion behavior, mechanical development, and microstructural characteristics of cemented paste backfill (CPB).
Lijie Guo   +5 more
wiley   +1 more source

Using miniaturized laboratory equipment and DNA barcoding to improve conservation genetics training and identify illegally traded species

open access: yesConservation Biology, Volume 40, Issue 2, April 2026.
Abstract Illegal wildlife trade (IWT) is one of the largest global illegal activities, and it negatively affects biodiversity and sustainable development worldwide. DNA barcoding coupled with high‐throughput sequencing (i.e., metabarcoding) is useful in identifying taxa affected by IWT and has been used routinely for decades.
Maria Joana Ferreira da Silva   +9 more
wiley   +1 more source

Some Geomorphic Studies of East Ongul Island; Landform Classification and Morphometry

open access: yesAntarctic Record, 1961
目的と方法 種々の制約の多い南極地域の地学部門現地調査に側面から協力するために,第1次観測隊の撮影した1万分の1空中写真とそれから図化した5千分の1地形図を基にして,東オングル島の予察的地形分類図の作成と2,3の図上計測を行なった.地形分類は斜面の傾斜(4階級に区分)と表面物質の性状(細粒,粗粒,薄く点在,岩盤露出の4種)を規準に,これら2要素の組合せによって分類単位を設定し,2,3の微地形記号とともに類別図示した.計測は島内に無作為に配布した200地点(Fig.
Seiichi HATANO
doaj   +1 more source

Origin and formation process of the ground ice in Northeastern Siberia using stable isotopes of water [PDF]

open access: yes, 2016
第4回極域科学シンポジウム横断セッション:[IA] 「急変する北極気候システム及びその全球的な影響の総合的解明」―GRENE北極気候変動研究事業研究成果報告2013―11月12日(火) 国立極地研究所 ...
I ブラギン   +6 more
core   +1 more source

Life Stage‐Specific Genetic Diversity and Landscape Characteristics Collectively Influence Genetic Recovery in Pometia pinnata Population 生活史阶段特异的遗传多样性与景观特征对番龙眼种群遗传恢复的协同影响

open access: yesIntegrative Conservation, Volume 5, Issue 1, Page 137-149, March 2026.
Pometia pinnata demonstrated life‐stage‐specific genetic responses to landscape features, with asymmetric gene flow patterns and population recovery following historical bottlenecks, revealing complex topographic and demographic influences on forest genetic structure.
Madhuparna Chatterjee   +5 more
wiley   +1 more source

ヤマガタシ マミガサキガワ センジョウチ センタンブ ノ イド イコウ ト チカ スイイ フクゲン [PDF]

open access: yes, 2004
Keywords : Fan, Ground water, Archeological excavation, Well, Yamagata キーワード:扇状地, 地下水, 考古学的発掘, 井戸, 山形 Summary : More than 200 wells were excavated in the archaeological survey area of about 60,000m~2 in the Futaba-cho Site, Yamagata city.
斎藤 仁, 阿子島 功
core   +1 more source

Fabrication‐Driven Oxidation Pathways in Y/Hf‐Modified High‐Entropy Alloys: From Elemental Segregation to Oxide Homogeneity

open access: yesRare Metals, Volume 45, Issue 2, February 2026.
ABSTRACT This study elucidates the oxidation mechanisms governing Y/Hf‐doped AlCoCrFeNiTi high‐entropy alloys (HEAs) and reveals the pivotal role of fabrication processes in dictating high‐temperature oxidation behavior. We demonstrate that casting and spark plasma sintering (SPS) promote Y/Hf segregation, resulting in heterogeneous oxide formation and
Huaqing Yi   +5 more
wiley   +1 more source

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