Results 31 to 40 of about 599,835 (97)

Uncovering correlates of decline and critical refuges for a threatened terrestrial mammal

open access: yesConservation Biology, Volume 40, Issue 4, August 2026.
Abstract Globally, the geographic ranges of numerous species are contracting. Identifying spatiotemporal patterns of threat impact can illuminate why species decline in some parts of their range but persist in others. We developed a correlative approach to identify species’ response thresholds and locate ecological refuge areas associated with ...
Natalya M. Maitz   +5 more
wiley   +1 more source

鶏精子の凍結保存用希釈液について [PDF]

open access: yes, 1977
著者らはこれまでの実験で,グリセリンの最終濃度が7%になるよう調整した卵黄ブドウ糖希釈液を用いて鶏精液を4倍に希釈して凍結保存を実施してきたが,その受精率は50~60%の水準にとどまった。今回この従来の希釈液を対照区とし,新たにnon‐yolk5.7%ブドウ糖液を試験区としてそれぞれ4倍希釈で凍結保存を実施し,融解後の精子活力,奇形率および受精率について比較検討した結果,融解後の精子活力については両区間に明らかな有意差が認められた(P>0.01)が奇形率においては有意差は認あられなかった ...
Watanabe, Moriyuki   +2 more
core   +1 more source

Synergy of Strength and Plasticity in Extruded VZ91K Magnesium Alloy Achieved by Constructing Bimodal Grain Structure via Suppression of PSN‐DRX

open access: yesRare Metals, Volume 45, Issue 7, July 2026.
ABSTRACT Bimodal grain structure (BGS) demonstrates significant potential in synergistically optimizing the strength and plasticity of magnesium alloys. Acquiring the desired BGS consequently became a critical challenge. This study took the Mg‐9Gd‐1Zn‐0.5Zr (wt%, VZ91K) alloy as its subject. From the perspective of BGS formation mechanisms, it suggests
Shuai Yuan   +5 more
wiley   +1 more source

Structure–Property Relationship‐Guided Mechanisms for Electromagnetic Wave Absorption, Triboelectric Generation, and Negative Permittivity in Magnetic Metacomposites

open access: yesRare Metals, Volume 45, Issue 7, July 2026.
ABSTRACT The composition and structural characteristics of metacomposites are crucial for tuning their negative electromagnetic parameters; however, the lack of a clear structure–property relationship severely limits their application in dielectric and magnetic fields.
Chunyuan Deng   +9 more
wiley   +1 more source

Full‐Skin‐Coverage Photolithographic Intrinsically‐Stretchable Proximity Sensors Toward New‐Generation Scalable Skin‐Like Wearable Electronics

open access: yesRare Metals, Volume 45, Issue 7, July 2026.
ABSTRACT Skin‐like wearable electronics have emerged as a transformative technology for next‐generation human–computer interaction, offering unprecedented compatibility with the body's soft, curvilinear surfaces, and dynamic movements. However, the scarcity of intrinsically stretchable material components and the limited coverage of reported sensors ...
Mingxin Zhang   +6 more
wiley   +1 more source

Risk of minor congenital heart defect in infants conceived via assisted reproductive technology: cohort study from the Copenhagen Baby Heart Study

open access: yesUltrasound in Obstetrics &Gynecology, Volume 68, Issue 1, Page 59-67, July 2026.
ABSTRACT Objective Infertility affects up to 20% of couples in high‐income countries, which has led to an increased use of assisted reproductive technology (ART). While previous studies have linked ART to a higher risk of major congenital heart defects (CHD), less is known about the associated risk of minor CHD.
F. Kyhl‐Svart   +16 more
wiley   +1 more source

Tuning Y‐Mg Supports for Improved Ni‐Catalyzed NH3 Decomposition: Structural Modulation and Mechanistic Insights

open access: yesRare Metals, Volume 45, Issue 6, June 2026.
ABSTRACT Catalytic NH3 decomposition has garnered substantial attention for hydrogen transformation and storage. Ni‐based catalysts continue to suffer from limited thermal stability and suboptimal low‐temperature activity, largely attributed to an incomplete understanding of the structure‐activity relationships and reaction mechanisms governing their ...
Tao Wen   +8 more
wiley   +1 more source

Prospective comparison of diagnostic accuracy of ultrasound, PET/CT and DW‐MRI for preoperative assessment of pelvic lymph nodes in cervical cancer patients: results of the CANNES trial

open access: yesUltrasound in Obstetrics &Gynecology, Volume 67, Issue 6, Page 836-851, June 2026.
ABSTRACT Objective To determine whether ultrasound is non‐inferior to positron‐emission tomography/computed tomography (PET/CT) and diffusion‐weighted magnetic resonance imaging (DW‐MRI) in terms of overall diagnostic accuracy for the preoperative assessment of pelvic lymph‐node status in cervical cancer.
F. Frühauf   +14 more
wiley   +1 more source

Defect‐Regulated Electronic and Lattice Evolution in Na4VMn(PO4)3 Toward High‐Performance Sodium Storage

open access: yesRare Metals, Volume 45, Issue 5, May 2026.
ABSTRACT NASICON‐type Na4VMn(PO4)3 (NVMP) is a promising high‐capacity cathode for sodium‐ion batteries, yet its practical deployment is hindered by Mn3+‐driven lattice distortion, persistent oxygen vacancy defects, and sluggish Na+ transport, collectively resulting in accelerated performance degradation.
Deyi Zhang   +10 more
wiley   +1 more source

Pyrolysis‐Engineered Fe/Mn‐ZIF Catalysts: Balancing Activity, Selectivity, and Stability for the Oxygen Reduction Reaction

open access: yesRare Metals, Volume 45, Issue 4, April 2026.
ABSTRACT Metal oxide‐based catalysts for oxygen reduction reaction (ORR) have drawn great attention in recent years. However, it remains technically challenging for the precise regulation of the overall performance due to the trade‐off effect among the activity, selectivity, and stability of electrocatalysts. Herein, a balancing strategy to control the
Haoran Ma   +7 more
wiley   +1 more source

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