Results 121 to 130 of about 1,234,082 (251)

Designing The Primary Nozzle Configuration of a Phase Change Ejector as an Expansion Device in the R134A Air-Water Heat Pump Cycle

open access: yesDiyala Journal of Engineering Sciences
The aim of this study is to develop a thermodynamic model for designing the primary nozzle (P-N) of a phase change ejector utilized in the Air - Water Heat Pump (AWHP) cycle.
Mohammed Ridha Jawad   +1 more
doaj   +1 more source

Photoacoustic Nanotagging for In Vivo Tracking and Optimization of Macrophage Immunotherapy in Solid Tumors

open access: yesAdvanced Materials, EarlyView.
Macrophage‐based immunotherapy for solid tumors is limited by poor tracking of cell localization and persistence. This study introduces nanotagged macrophages enabling near‐infrared photoacoustic imaging for real‐time monitoring. IFNγ‐conjugated tags enhance antitumor polarization without harming viability.
Seoyoon Song   +8 more
wiley   +1 more source

LASER FLUORESCENCE STUDY OF CYCLOOCTATRIENE IN A SUPERSONIC EXPANSION

open access: yes, 1984
Author Institution: Department of Chemistry, Wesleyan UniversitySpectroscopic investigations on cyclooctatriene in solution and in the condensed phase at reduced temperatures have shown no observable emission.
Heimbrook, Lou Ann, Kohler, Bryan E.
core   +1 more source

On the Characteristic Structure of the Adjoint Euler Equations and the Analytic Adjoint Solution of Supersonic Inviscid Flows

open access: yesAerospace
The characteristic structure of the two-dimensional adjoint Euler equations is examined. The behavior is similar to that of the original Euler equations, but with the information traveling in the opposite direction. The compatibility conditions obeyed by
Carlos Lozano, Jorge Ponsin
doaj   +1 more source

Spectral Selective and Low‐Noise Thin‐Film Organic Photodetectors Enabled by Electric‐Field Engineering

open access: yesAdvanced Materials, EarlyView.
Molecular doping redistributes the internal electric field in organic photodetectors, providing a new degree of freedom to spatially control carrier transport and collection. Simulations and experiments reveal distinct transport pathways for injected and photogenerated carriers, enabling low dark current under reverse bias and wavelength‐selective ...
Jingwei Yi   +15 more
wiley   +1 more source

Nonlinear asymptotic theory of supersonic centered expansion wave

open access: yes, 2010
本文主要目的是對平面凸角扇形膨脹 波之普朗特-梅耶二氏流中,超音速微小擾動之 理論重新加以分析和驗證。 利用Strained Coordinates方法,從普 朗特-梅耶二氏流邊界值問題中推導得知,超音 速一階微小擾動方程式是非線性的。超音速非 線性漸近理論所得之結果非常有趣且與普朗特 -梅耶流之確解相當接近。The essential point of view introduced here is to re-examine the Supersonic Small Perturbation ...
馮朝剛, Feng, Chao-Kang
core  

A Cu2S/NiOOH Heterojunction Enables Highly Selective Ammonia‐to‐Nitrite Electrooxidation at Industrially Relevant Current Densities

open access: yesAdvanced Materials, EarlyView.
Cu2S/NiOOH heterojunction enables efficient ammonia electrooxidation coupled with hydrogen evolution. Interfacial electronic modulation of Ni sites promotes selective NH3‐to‐NO2− electrooxidation at high current density. In a membrane electrode assembly, Cu2S/NiOOH maintains over 90% Faradaic efficiency of nitrite at 800 mA cm−2, highlighting its ...
Ke Wang   +13 more
wiley   +1 more source

Radiative Thermal Management for Extreme Environments: Mechanisms and Design Strategies

open access: yesAdvanced Materials, EarlyView.
In this review, we discuss the fundamental mechanisms of radiative cooling and solar heating, material and structural design strategies, hybrid approaches integrating additional heat transfer pathways, and durability‐oriented designs addressing environmental stresses.
Hyung Rae Kim   +5 more
wiley   +1 more source

Biohybrid Crawling Robot With Spiral‐Spring Backbone and Inclined Legs for Enhanced Locomotion

open access: yesAdvanced Materials, EarlyView.
We present a biohybrid crawling robot integrating a muscle ring with a flexible skeleton combining two complementary structural elements. The spiral‐spring backbone enables large‐amplitude bending without compromising axial stability, while outward‐inclined legs with unequal front–rear lengths effectively convert deformation into directional strides ...
Tomohiro Morita   +2 more
wiley   +1 more source

Phase‐Engineered MoS2 Quantum Monolayer Catalysts

open access: yesAdvanced Materials, EarlyView.
A new type of catalyst model—phase‐engineered MoS2 quantum‐monolayer catalyst (∼0.8 nm thick, < 6 nm in the lateral size; switchable freely among metallic 1T, semiconducting 2H, and a hybrid phase of metallic‐semiconducting 1T‐2H)—is reported. It can efficiently and stably drive photochemical H2, syngas and ammonia synthesis as a catalyst or co ...
Ruijie Yang   +12 more
wiley   +1 more source

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