Results 61 to 70 of about 2,302,476 (295)

Ceramics based on reactional connected silicon nitride used for foundry crucibles

open access: yesЛитьë и металлургия, 2000
Is elaborated а composite material based on reactional connected silicon nitride for refractory crucibles.
S. Usherenko   +3 more
doaj  

Logic circuit detects both present and missing negative pulses in superimposed wave trains [PDF]

open access: yes, 1967
Pulse divide and determination network provides a logical determination of pulse presence within a data train. The network uses digital logic circuitry to divide positive and negative pulses, to shape the separated pulses, and to determine, by means of ...
Rice, R. E.
core   +1 more source

Cell‐cycle‐specific lesion evolution rather than inhibition of double‐strand‐break repair underpins cisplatin radiosensitization

open access: yesMolecular Oncology, EarlyView.
We analyze cisplatin–DNA adducts (CDAs) and double‐strand breaks (DSBs) in a cell‐cycle‐dependent manner. We find that CDAs form similarly across all cell cycle phases. DSBs arise only in S‐phase. CDAs might not directly impair DSB repair, but S‐phase DSB lesions evolve in the presence of CDAs and disrupt repair in G2, also causing radiosensitization ...
Ye Qiu   +10 more
wiley   +1 more source

Pulsed quantum optomechanics [PDF]

open access: yesProceedings of the National Academy of Sciences, 2011
Studying mechanical resonators via radiation pressure offers a rich avenue for the exploration of quantum mechanical behavior in a macroscopic regime. However, quantum state preparation and especially quantum state reconstruction of mechanical oscillators remains a significant challenge.
Vanner, M. R.   +7 more
openaire   +6 more sources

Speech analyzer [PDF]

open access: yes, 1977
A speech signal is analyzed by applying the signal to formant filters which derive first, second and third signals respectively representing the frequency of the speech waveform in the first, second and third formants.
Lokerson, D. C.
core   +1 more source

Carrier-envelope phase dependence in single-cycle laser pulse propagation with the inclusion of counter-rotating terms

open access: yes, 2012
We focus on the propagation properties of a single-cycle laser pulse through a two-level medium by numerically solving the full-wave Maxwell-Bloch equations.
Cui N   +5 more
core   +1 more source

Targeting TNBC: core–shell polycationic polyurea dendrimers with inherent anticancer activity

open access: yesFEBS Open Bio, EarlyView.
Core–shell polycationic PURE dendrimers were tested in TNBC‐derived tumor models. Both formulations selectively targeted TNBC and effectively reduced tumor volume. PUREG4‐OEI48 suppressed tumor growth without detectable toxicity, whereas PUREG4‐OCEI24, despite showing efficacy, induced hepatic toxicity.
Adriana Cruz   +9 more
wiley   +1 more source

Probing ultrafast ππ*/nπ* internal conversion in organic chromophores via K-edge resonant absorption

open access: yesNature Communications, 2017
Many photo-induced processes such as photosynthesis occur in organic molecules, but their femtosecond excited-state dynamics are difficult to track. Here, the authors exploit the element and site selectivity of soft X-ray absorption to sensitively follow
T. J. A. Wolf   +23 more
doaj   +1 more source

Reaching the highest shelf: A review of organic production, nutritional quality, and shelf life of kale (Brassica oleracea var. acephala)

open access: yesPlants, People, Planet, 2021
Societal Impact Statement Since its inception in the early 20th century, organic agriculture has grown increasingly popular due to its focus on a holistic, environmentally friendly approach to crop production.
Tony Reda   +5 more
doaj   +1 more source

Stringlike Pulse Quantification Study by Pulse Wave in 3D Pulse Mapping [PDF]

open access: yesThe Journal of Alternative and Complementary Medicine, 2012
A stringlike pulse is highly related to hypertension, and many classification approaches have been proposed in which the differentiation pulse wave (dPW) can effectively classify the stringlike pulse indicating hypertension. Unfortunately, the dPW method cannot distinguish the spring stringlike pulse from the stringlike pulse so labeled by physicians ...
Ching-Hsing, Luo   +6 more
openaire   +2 more sources

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