Results 91 to 100 of about 222,693 (299)

Sleep Alters the Velocity of Physiological Brain Pulsations in Humans

Advanced Science, EarlyView.
Sleep alters I/CSF oscillatory flow, driven by increased respiratory (29%) and vasomotor pulsation (21%) velocities, while cardiovascular pulsations decreased by (22%). Velocity is quantified using optical flow analysis of MREG data. Spectral power increases alongside these pulsations (spatial correlation, r = 0.35 and r = 0.39, respectively ...
Ahmed Elabasy, Heta Helakari, Tommi Väyrynen, Zalán Rajna, Niko Huotari, Lauri Raitamaa, Ville Isokoski, Matti Järvelä, Mika Kaakinen, Johanna Piispala, Mika Kallio, Vesa Korhonen, Tapio Seppänen, Vesa Kiviniemi   +13 more
wiley   +1 more source

Case study of natural convection topology optimization based on finite volume method

Case Studies in Thermal Engineering
Topology optimization is crucial for improving natural convection cooling devices. This study applies natural convection topology optimization to various engineering cases, including 2D, 3D, inclined, and inverted heat sink with various boundary ...
Honglei Liu, Shuzhe Guo, Ce Liu, Fei Du, Baotong Li, Jun Hong   +5 more
doaj   +1 more source

Experimental Studies of Natural Convection Heat Transfer of AlO/DI Water Nanoparticle Suspensions (Nanofluids)

Advances in Mechanical Engineering, 2010
The natural convection heat transfer characteristics of Al 2 O 3 / water nanofluids comprised of 47 nm, Al 2 O 3 and water, with volume fractions ranging from 0.5% through 6%, has been investigated through a set of experimental measurements.
Calvin H. Li, G. P. Peterson
doaj   +1 more source

Promoting Treg Polarization‐Mediated Anti‐Scar and Appendage Regeneration in Wound Healing

Advanced Science, EarlyView.
This study develops a PLGA@LA‐BMP4‐PG bilayer scaffold to address scar formation and appendage loss in skin repair. The piezoelectric PLA layer enhances cell migration via electric fields, while GelMA delivers LA promoting Tregs polarization and BMP4 inhibiting FBs differentiation.
Yiwen Yang, Mingjie Kuang, Jiacheng Shi, Ruiyan Li, Yuhan Zhang, Xinting Liu, Runtan Li, Yong Kang, Bin Yao, Shuquan Zhang, Xiaoyuan Ji   +10 more
wiley   +1 more source

Numerical Investigation of Turbulent Mixed Convection of Liquid Metal in Inclined Tube Based on Second-order Differential Heat Flux Model

Yuanzineng kexue jishu
Liquid metal reactors, widely used in advanced nuclear systems, utilize liquid metals with low Prandtl numbers as coolants. The flow of liquid metal within the fuel assembly often exists in a mixed convection regime.
GUO Yuefeng, SU Xingkang, WANG Guan, CHEN Qijian, GU Long
doaj   +1 more source

Control of convection by dfferent buoyancy forces [PDF]

, 2011
This paper was presented at the 3rd Micro and Nano Flows Conference (MNF2011), which was held at the Makedonia Palace Hotel, Thessaloniki in Greece.
3rd Micro and Nano Flows Conference (MNF2011), Dahley, N, Egbers, C, Futterer, B   +3 more
core  

A Biomarker‐Driven Ovary–Endometrium Organ‐on‐a‐Chip Mimicking 3D Multicellular Complexity and Menstrual Cyclicity for Predicting Reproductive Toxicity

Advanced Science, EarlyView.
We present a dual‐organ, biomarker‐integrated ovaryendometrium organ‐on‐a‐chip that recapitulates 3D tissue complexity, menstrual cycle dynamics, and hormonal crosstalk. This platform enables real‐time, cell‐typespecific fluorescent readouts of reproductive toxicity using ANGPTL4 and SERPINB2 as early‐response reporters.
Soo‐Rim Kim, Eun‐kyung Min, Choon‐Mi Lee, Chan Hum Park, Byung‐Chul Oh, YunJae Jung, In‐Sun Hong   +6 more
wiley   +1 more source

Using pin fins arrangements to improve melting heat and mass transfer in a cylindrical enclosure

Case Studies in Thermal Engineering
This study presents a numerical investigation of the melting behavior of RT35 phase change material (PCM) in latent heat thermal energy storage (LHTES) in the presence of pin fins.
Fathi Alimi, Abdul Amir H. Kadhum, Mohamed Bouzidi, Mohammed Hasan Ali, Hammadi Khmissi, Zehba Raizah, Faisal Alresheedi, Turki Alkathiri, D. Iranian   +8 more
doaj   +1 more source

Studies of heat source driven natural convection [PDF]

Natural convection energy transport in a horizontal layer of internally heated fluid with a zero heat flux lower boundary, and an isothermal upper boundary, has been studied.
Cassen, P., Kulacki, F. A., Nagle, M. E.
core   +1 more source

Thermally Induced Creep and Viscoelastic Behavior of Copper Micropillar Arrays

Advanced Science, EarlyView.
Copper micropillar arrays are fabricated by electrodeposition within through‐glass‐via, and their thermally induced time‐dependent deformation is quantified. Nanoindentation creep, EBSD, and TEM reveal a heat‐treatment‐driven transition between grain‐boundary‐mediated deformation and dislocation‐dominated creep, while Kelvin modeling captures ...
Miao Wang, Jihua Zhang, Libin Gao, Hongwei Chen, Wenbo Luo, Wenlei Li, Mingcheng Chen, Mengru Li, Dongbin Wang, Shuang Li, Ting Liu, Xingzhou Cai, Yong Li, Bin Peng, Wanli Zhang   +14 more
wiley   +1 more source