نتایج جستجو برای: ttm

تعداد نتایج: 733  

Journal: :Angewandte Chemie 2023

Luminescent radicals are gathering constant attention as a new class of luminescent material due to the ground and excited state doublet character. In their Research Article (e202302550), Ken Albrecht co-workers report carbazole dendronized tris(2,4,6-trichlorophenyl)-methyl (TTM) radical. Dendron modification increases photostability photoluminescence quantum yield up 63 % in cyclohexane. The ...

Journal: :Angewandte Chemie 2023

Luminescent radicals are gathering constant attention as a new class of luminescent materials due to the ground and excited state doublet character. In their Research Article (e202302550), Ken Albrecht co-workers report carbazole dendronized tris(2,4,6-trichlorophenyl)methyl (TTM) radical. Dendron modification increases photostability photoluminescence quantum yield up 63 % in cyclohexane. The ...

Journal: :Chinese Journal of Mechanical Engineering 2023

Abstract Large-scale solar sails can provide power to spacecraft for deep space exploration. A new type of telescopic tubular mast (TTM) driven by a bistable carbon fiber-reinforced polymer tube was designed in this study solve the problem contact between sail membrane and under light pressure. Compared with traditional TTM, it has small size, weight, high extension ratio, simple structure. The...

2009
Patrick E. Hopkins Pamela M. Norris

With the ever decreasing characteristic lengths of nanomaterials, nonequilibrium electron-phonon scattering can be affected by additional scattering processes at the interface of two materials. Electron-interface scattering would lead to another path of energy flow for the high-energy electrons other than electron-phonon coupling in a single material. Traditionally, electron-phonon coupling in ...

2010
MICHEAL N. DYER M. N. DYER

In this note we study a certain class of groups w for which the homotopy classification of (rr, m)-complexes is independent of the fc-invariant for small m. 1. Homotopy trees. A (tt, w)-complex is a finite, connected w-dimensional CW-complex such that ttx(X) = m and ttj(X) = 0 for 1 < i < m. The homotopy tree HT(tt, m) is a directed tree whose vertices are homotopv classes of (tt, w)-complexes....

Journal: :Journal of Physics D 2023

Abstract The microscopic mechanism of metal ablation induced by ultrashort laser pulse irradiation is investigated. A two-temperature model scheme combined with molecular dynamics (TTM-MD) developed to incorporate electronic entropy effects into the simulation while satisfying energy conservation law. Simulation TTM-MD reveals that near threshold causes high-energy atom/ion emission and sub-nan...

Journal: :Journal of neurosurgery 2009
Jian-Qiang Lu Moosa Khalil William Hu Garnette R Sutherland Arthur W Clark

Tumor-to-tumor metastasis (TTM) is a relatively rare but well-documented phenomenon. The authors report a unique case of esophageal carcinoma metastatic to an intracranial paraganglioma. A sellar and suprasellar tumor was found using MR imaging in an 81-year-old man who presented with a 3-week history of progressive headache and blurred vision. A subtotal excision of the tumor was achieved. His...

Journal: :Behaviour research and therapy 2006
Douglas W Woods Chad T Wetterneck Christopher A Flessner

This randomized trial compared a combined Acceptance and Commitment Therapy/Habit Reversal Training (ACT/HRT) to a waitlist control in the treatment of adults with trichotillomania (TTM). Twenty-five participants (12 treatment and 13 waitlist) completed the trial. Results demonstrated a significant reduction in hair pulling severity, impairment ratings, and hairs pulled, along with significant ...

Journal: :Social Networks 2000
Micha Mandel

When trying to understand the structure of a social network, the number of mutual dyads is often used to describe tendency toward mutuality (TTM). Only few works, however, deal with measures of TTM and only the work of Rao and Bandyopadhyay [Rao, A.R., Bandyopadhyay, S., 1987. Sankhya 49 Ser. A, pp. 141–188] compares between the different measures. This paper presents the different measures for...

2012
Mehran Mobrem

The Telescopic Tubular Mast (TTM) has been under development at Astro Aerospace – Northrop Grumman Aerospace Systems for a number of years and has found several applications including deployment of the Large Sunshield on the James Webb Space Telescope. The TTM is composed of a number of large diameter tubes that are deployed and retracted using a Storable Tubular Extendable Mechanism (STEM). In...

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