Results 31 to 40 of about 18,196 (278)

Field Study on the Application of Frost-suppression Air-Source Heat Pump Units

Zhileng xuebao, 2022
Frosting (especially severe frosting) in air-source heat pump (ASHP) units leads to a substantial decrease in operating performance. The development of frost-suppression ASHPs (FSASHPs) is key to ensuring their efficient application and healthy ...
梁士民, 王伟, 孙育英, 林瑶, 王世权   +4 more
doaj  

We Mean Green Environmental Science Club [PDF]

, 2020
Lesson Plans for an Environmental Science Club. This club seeks to promote environmental awareness to elementary students through hands-on activities, videos, and ...
Heyen, Maria E, Prehn, Lauren
core   +1 more source

Sequence determinants of RNA G‐quadruplex unfolding by Arg‐rich regions

FEBS Letters, EarlyView.
We show that Arg‐rich peptides selectively unfold RNA G‐quadruplexes, but not RNA stem‐loops or DNA/RNA duplexes. This length‐dependent activity is inhibited by acidic residues and is conserved among SR and SR‐related proteins (SRSF1, SRSF3, SRSF9, U1‐70K, and U2AF1).
Naiduwadura Ivon Upekala De Silva, Puspa Kunwar, Md Ibnul Rifat Rahman, Joanna Koryo Kwao, Nathan Lehman, Zihan Zhang, Trenton Paul, Claire Cheng, Nicholas Truex, Hui‐Ting Lee, Jun Zhang   +10 more
wiley   +1 more source

Performance Improvement of Microchannel Heat Exchangers with Modified Louver Fins under Frosting Conditions

Applied Sciences, 2023
Microchannel heat exchangers (MCHX) are increasingly being used in refrigeration and heat pumps due to their superior thermal-hydraulic properties. However, when the MCHX surface temperature drops below the freezing point, frost will accumulate on the ...
Tong Xiong, Guoqiang Liu, Gang Yan
doaj   +1 more source

Elastic light-scattering modulator: A concept [PDF]

, 1973
Simple structure can be used as electrically-controlled light valve, to scatter both transmitted and reflected beams. Its operation is based on physical phenomenon called frosting.
Mezrich, R. S., Vilkomerson, D. H. R.
core   +1 more source

Dissecting the Red Sequence--II. Star Formation Histories of Early-Type Galaxies Throughout the Fundamental Plane

, 2009
This analysis uses spectra of ~16,000 nearby SDSS quiescent galaxies to track variations in galaxy star formation histories along and perpendicular to the Fundamental Plane (FP). We sort galaxies by their FP properties (sigma, R_e, and I_e) and construct
Adelman-Mc Carthy, Adelman-McCarthy, Bernardi, Bernardi, Blanton, Blanton, Faber, Fisher, Forbes, Genevieve J. Graves, Graves, Graves, Graves, Jørgensen, Jørgensen, Kormendy, Nelan, Peng, Ricardo P. Schiavon, Robertson, S. M. Faber, Schiavon, Smith, Strauss, Sérsic, Thomas, Trager, Treu, Treu, van der Wel, van der Wel, Worthey, Worthey, Yan, York   +34 more
core   +1 more source

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

FEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li, Pedro A. Sánchez‐Murcia, Bernd Nidetzky   +2 more
wiley   +1 more source

Experimental study on the influence of base plate temperature and fin pitch on frosting characteristics of parallel cold plates

Case Studies in Thermal Engineering
Frosting on the surface of heat exchangers will significantly impact system performance. To alleviate adverse effects, it is important to analyze the frosting characteristics.
Jiadong Ji, Jinhui Zhao, Xuwang Ni, Yuling Pan, Yongmei Li   +4 more
doaj   +1 more source

Experimental Study on Frosting Characteristics of Three-row Finned Tube Heat Exchanger with Different Fin Pitch

Zhileng xuebao, 2021
The limitations of non-uniform frosting along the direction of air flow and large frost mass in the first row of the finned tube heat exchanger of an air-source heat pump under low ambient temperature may cause a short defrost interval, heating capacity ...
Xiao Hongxin, Chen Guansheng, Liu Liangde, Luo Chaohong, Liu Xiangyun, Li Jianguo   +5 more
doaj  

A Day in Her Boots [PDF]

, 2009
Spend a day with groundskeeper extraordinaire Carol Gallagher to learn some of the secrets behind what makes the Linfield campus so ...
Davis, Laura
core   +1 more source