Results 181 to 190 of about 504,859 (272)

Balancing Efficiency and Emissions: A Study on Biodiesel‐Hydrogen Dual‐Fuel Engine Performance Under Varying Injection Timings

Engineering Reports, Volume 7, Issue 5, May 2025.
This study explores the impact of varying injection timings on a biodiesel‐hydrogen dual‐fuel CI engine. Results reveal that IT30 optimizes brake thermal efficiency (32.7%) and reduces CO and HC emissions while slightly increasing NOx. Findings suggest IT30 as the optimal configuration for balancing efficiency and emissions. ABSTRACT The growing demand
Vasanthkumar Periyathambi, Manikandan Ezhumalai, Mohan Govindasamy, Ratchagaraja Dhairiyasamy, Deekshant Varshney, Subhav Singh   +5 more
wiley   +1 more source

Biometry study of foveal isoplanatic patch variation for adaptive optics retinal imaging. [PDF]

Biomed Opt Express
Huang X, Hargrave A, Bentley J, Dubra A.
europepmc   +1 more source

3D Printing of Aluminum Alloys via Material Extrusion (MEX) Process: Challenges in Developing Acetone‐Soluble Binder Systems

Polymers for Advanced Technologies, Volume 36, Issue 5, May 2025.
ABSTRACT Metal material extrusion (MMEX) is a technique to produce a part, characterized by the sequential deposition of material in layers, which is subsequently followed by debinding and sintering to yield fully dense metallic components. The feedstocks, consisting of metal powder combined with a binder system, are essential in determining both the ...
Vahid Momeni, Margarete Hufnagl, Zahra Shahroodi, Georg Poehle, Joamin Gonzalez‐Gutierrez, Stephan Schuschnigg, Christian Kukla, Clemens Holzer   +7 more
wiley   +1 more source

Comparison of objective visual quality between SMILE and FS-LASIK in moderate-to-high myopia. [PDF]

Front Med (Lausanne)
Zou H, Wei X, Li L, Wei D, Mao H, Huang Y, Lu P, Li Z, Zhong D, Chen Q.   +9 more
europepmc   +1 more source

Establishing the Partial Load Limits for Main Shaft Response Prediction in Wind Turbine Hybrid Nacelle Testing

Wind Energy, Volume 28, Issue 5, May 2025.
ABSTRACT Hybrid nacelle testing is a novel testing method that utilizes partial load tests in combination with virtual models to extrapolate the response at full load of the nacelle device under test. Validation of the virtual model at partial loads plays a crucial role in this type of hybrid test approach.
Muhammad Omer Siddiqui, Amir R. Nejad, Jan Wenske   +2 more
wiley   +1 more source

Mechanism of sensor kinase CitA transmembrane signaling. [PDF]

Nat Commun
Zhang XC, Xue K, Salvi M, Schomburg B, Mehrens J, Giller K, Stopp M, Weisenburger S, Böning D, Sandoghdar V, Unden G, Becker S, Andreas LB, Griesinger C.   +13 more
europepmc   +1 more source

Premonitory Slip, Rupture Propagation, and Frictional Sliding on Laboratory Faults in Porous Sandstone: Effects of Loading Rate and Confining Pressure

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 5, May 2025.
Abstract To investigate spatiotemporal evolution of premonitory slip and foreshock activity, we conduct a series of displacement‐driven triaxial compression experiments on porous sandstone samples containing a saw‐cut fault under conditions of varying load point velocities (1–10 μm/s), confining pressures (35–75 MPa) and constant pore pressure (5 MPa).
Lei Wang, Georg Dresen
wiley   +1 more source

Technologies for Fabricating Large-Size Diffraction Gratings. [PDF]

Sensors (Basel)
Shao C, Li X.
europepmc   +1 more source

Equilibrium Silicon Isotope Fractionation in Eclogites and Granites Constrained by Single Crystal X‐Ray Diffraction and the Force Constants Approach

Geophysical Research Letters, Volume 52, Issue 8, 28 April 2025.
Abstract Using our recently developed X‐ray diffraction based force constants approach, we have determined the equilibrium Si isotope fractionation between omphacite/garnet, quartz/kyanite, and quartz/zircon at temperatures relevant to the petrogenesis. We find that Na strongly affects the Si isotope fractionation between omphacite and garnet.
Dongzhou Zhang, Jingui Xu, Przemyslaw K. Dera, Bin Chen, Ming Chen   +4 more
wiley   +1 more source

Exploring Wavefront Detection in Imaging Systems with Rectangular Apertures Using Phase Diversity. [PDF]

Sensors (Basel)
Li Y, Guo J, Liu R.
europepmc   +1 more source