Results 31 to 40 of about 895,380 (269)

Development of polymer network of phenolic and epoxies resins mixed with linseed oil: pilot study [PDF]

, 2010
Epoxy resin was mixed with phenolic resins in different percentages by weight. Composite 40/60 means the proportion by weight of epoxy resin is 40 percent. It was found that only composites 50/50 and 40/60 could be cured in ambient conditions. Dynamic
Cardona, F., Ku, H., Munoz, J.-C., Rogers, D.   +3 more
core   +2 more sources

Dynamics of hydrogen-like atom bounded by maximal acceleration

, 2012
The existence of a maximal acceleration for massive objects was conjectured by Caianiello 30 years ago based on the Heisenberg uncertainty relations. Many consequences of this hypothesis have been studied, but until now, there has been no evidence that ...
Friedman, Yaakov, Resin, Emanuel
core   +1 more source

Research progress on the poisoning behavior of air electrodes and corresponding protection strategies for protonic ceramic cells

Energy Reviews
As next-generation intermediate-temperature electrochemical energy conversion devices, protonic ceramic cells (PCCs) face significant challenges in durability and commercialization due to air electrode poisoning under complex operating conditions.
Peng Qiu, Hao Lin, Zhiwei Peng, Huiying Qi, Baofeng Tu, Nanqi Li, Tianyu Zhu, Yanying Lu, Yanru Yang   +8 more
doaj   +1 more source

Synthesis of an aromatic N-heterocycle derived from biomass and its use as a polymer feedstock

Nature Communications, 2019
Aromatic N-heterocyclic compounds are important chemicals, but produced from petroleum. Here the authors show a pyridazine-based compound 6-(4-hydroxy-3-methoxyphenyl)pyridazin-3(2H)-one, used as polymer feedstocks, can be synthesized by a Friedel-Crafts
Yu Qi, Jinyan Wang, Yan Kou, Hongchang Pang, Shouhai Zhang, Nan Li, Cheng Liu, Zhihuan Weng, Xigao Jian   +8 more
doaj   +1 more source

Migration and transformation of the polybutadiene phase in ABS during Fused deposition Modeling: Controlling mechanical anisotropy

Materials & Design
Acrylonitrile-butadiene-styrene (ABS) is extensively utilized in Fused Deposition Modeling (FDM), yet the persistent mechanical anisotropy of printed parts remains a major obstacle. Moving beyond the conventional focus on processing parameters, this work
Bofan Shen, Jiang Liu, Fei Li, Wei Fan, Chunfu Sun, Zhenbiao Song, Ming Chen, Haotian Song, Xu He, Jian Kang, Ming Xiang, Shulai Lu   +11 more
doaj   +1 more source

Fluorescent UV-curable Polyurethane Acrylate Nanocomposite Coatings Strengthened with Carbon Quantum Dots: Preparation and Investigation of UV-blocking and Anti-Corrosive Properties [PDF]

شیمی کاربردی روز
Most polymers exposed to UV radiating from the sun deteriorate and lose their mechanical features. Polymer coatings are generally used for protection of metal surfaces against corrosive factors.
Abbas Madhi, Behzad Shirkavand Hadavand, Mohammad Hassan Madhi, Zahra Rahmani   +3 more
doaj   +1 more source

Effect of Compatibilizers on Impact Strength in Polycarbonate-Rich Blends With Acrylonitrile–Butadiene–Styrene

Advances in Polymer Technology
Polycarbonate (PC)/acrylonitrile–butadiene–styrene (ABS) blends with no compatibilizers have been manufactured commercially and widely used for many applications for many years.
Rujun Dai, Yansheng Zuo, Lu Xu, Songsong Li   +3 more
doaj   +1 more source

An Efficient RAN Slicing Strategy for a Heterogeneous Network With eMBB and V2X Services

IEEE Access, 2019
Emerging 5G wireless technology will support services and use cases with vastly heterogeneous requirements. Network slicing, which allows composing multiple dedicated logical networks with specific functionality running on top of a common infrastructure,
Haider D. Resin Albonda, Jordi Perez-Romero   +1 more
doaj   +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

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