Results 71 to 80 of about 593,834 (310)

Low phase noise microwave frequency synthesizer for cold atom clock

AIP Advances, 2019
We present a low phase noise microwave frequency synthesizer for the integrating sphere cold atom clock. The synthesizer is based on an ultralow-phase-noise oven-controlled crystal oscillator and employs a phase-locking technique.
Mingyuan Yu, Yaning Wang, Jinyin Wan, Xin Wang, Xinchuan Ouyang, Ling Xiao, Tang Li, Huadong Cheng, Liang Liu   +8 more
doaj   +1 more source

Evaluation of annoyance from low frequency noise under laboratory conditions

Noise and Health, 2010
The aim of the study was to investigate the annoyance of low frequency noise (LFN) at levels normally prevailing at workplaces in control rooms and office-like areas. Two different laboratory experiments were carried out. The first experiment included 55
Malgorzata Pawlaczyk-Luszczynska, Adam Dudarewicz, Wieslaw Szymczak, Mariola Sliwinska-Kowalska   +3 more
doaj   +1 more source

Factors influencing low-frequency noise reduction in typical Chinese dwelling layouts

Journal of Low Frequency Noise, Vibration and Active Control, 2021
Existing approaches to reducing the low-frequency noise exposure of dwellings are not always sufficient. This study investigated the significance of dwelling layout design for low-frequency noise control.
Yang Song, Jian Kang
doaj   +1 more source

Low Frequency Noise and phantom sounds

Noise Notes, 2009
Suffering from more or less continuous and more or less steady low pitched sounds at home can be a serious threat to well-being. Often the sound source is not obvious or cannot be found. In many cases there is no clear evidence from the analysis of the ambient sound what the disturbing sound could be.
openaire   +1 more source

Hyperosmotic stress‐induced redistribution of pre‐mRNA cleavage factor I subunits is associated with shifts in alternative polyadenylation

FEBS Open Bio, EarlyView.
Hyperosmotic stress triggers the relocation of the CFIm complex from the nucleus to the cytoplasm. This shift creates a nuclear ‘stoichiometric bottleneck’, limiting CFIm availability for mRNA processing. Consequently, specific mRNAs like NUDT21 and DICER1 undergo targeted 3′UTR shortening, demonstrating how spatial protein dynamics drive rapid ...
Hitomi Soumiya, Masatake Osawa, Hidefumi Fukumitsu   +2 more
wiley   +1 more source

Noise Annoyance and Perception by Low-Frequency Noise in Students

Archives of Occupational Health, 2019
Background: Low-frequency noise as a detrimental occupational and environmental factor which can cause noise annoyance. In addition to noise, factors such as sensitivity and awareness of adverse health effects of noise seem to play an important role in ...
Siavash Etemadinezhad, Milad Abbasi, Ahmad Alizade Larimi, Jamshid Yazdani Charati, Roghay’eh Jaffari Talaar poshti   +4 more
doaj  

Low frequency cultural noise [PDF]

Geophysical Research Letters, 2009
Abnormal cultural seismic noise is observed in the frequency range of 0.01–0.05 Hz. Cultural noise generated by human activities is generally observed in frequencies above 1 Hz, and is greater in the daytime than at night. The low‐frequency noise presented in this paper exhibits a characteristic amplitude variation and can be easily identified from ...
Dong‐Hoon Sheen, Jin Soo Shin, Tae‐Seob Kang, Chang‐Eob Baag   +3 more
openaire   +1 more source

Brainstem and Cerebellar Volume Loss and Associated Clinical Features in Progressive Supranuclear Palsy

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Introduction Progressive Supranuclear Palsy (PSP) is a neurodegenerative ‘tauopathy’ with predominating pathology in the basal ganglia and midbrain. Caudal tau spread frequently implicates the cerebellum; however, the pattern of atrophy remains equivocal.
Chloe Spiegel, Timothy P. Siejka, Cassandra Marotta, Josh J. Y. Lee, Kelly Bertram, Terence J. O'Brien, Meng Law, Lucy Vivash, Ian H. Harding   +8 more
wiley   +1 more source

Low frequency noise in advanced Si bulk and SOI MOSFETs

Journal of Telecommunications and Information Technology, 2005
A review of recent results concerning the low frequency noise in modern CMOS devices is given. The approaches such as the carrier number and the Hooge mobility fluctuations used for the analysis of the noise sources are presented and illustrated through
Jalal Jomaah, Francis Balestra, Gérard Ghibaudo   +2 more
doaj   +1 more source

Value of MRI Outcomes for Preventive and Early‐Stage Trials in Spinocerebellar Ataxias 1 and 3

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To examine the value of MRI outcomes as endpoints for preventive and early‐stage trials of two polyglutamine spinocerebellar ataxias (SCAs). Methods A cohort of 100 participants (23 SCA1, 63 SCA3, median Scale for the Assessment and Rating of Ataxia (SARA) score = 5, 42% preataxic, and 14 gene‐negative controls) was scanned at 3T up ...
Thiago J. R. Rezende, Emilien Petit, Young Woo Park, Sophie Tezenas du Montcel, James M. Joers, Jonathan M. DuBois, H. Moore Arnold, Michal Povazan, Ipek Özdemir, Guita Banan, Romain Valabregue, Philipp Ehses, Jennifer Faber, Chiadi U. Onyike, Peter B. Barker, Jeremy D. Schmahmann, Eva‐Maria Ratai, Sub H. Subramony, Thomas H. Mareci, Khalaf O. Bushara, Henry Paulson, Thomas Klockgether, Alexandra Durr, Tetsuo Ashizawa, Christophe Lenglet, Gülin Öz, READISCA Investigators   +26 more
wiley   +1 more source