Results 31 to 40 of about 47,819 (301)

The Bacillus subtilis TRAP protein can induce transcription termination in the leader region of the tryptophan biosynthetic (trp) operon independent of the trp attenuator RNA. [PDF]

PLoS ONE, 2014
In Bacillus subtilis, transcription of the tryptophan biosynthetic operon is regulated by an attenuation mechanism. When intracellular tryptophan levels are high, the TRAP protein binds to the 5' leader region of the nascent trp mRNA and induces ...
Natalie M McAdams, Paul Gollnick
doaj   +1 more source

Rotary antenna attenuator [PDF]

, 1969
Radio frequency attenuator, having negligible insertion loss at minimum attenuation, can be used for making precise antenna gain measurements.
Dickinson, R. M., Hardy, J. C.
core   +1 more source

Pulmonary Dysfunction Is Associated With Sleep Study Abnormalities in Children With Sickle Cell Disease: A Multicenter Study

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Introduction Pulmonary dysfunction and sleep abnormalities are common in children with sickle cell disease (SCD) and are associated with worse clinical outcomes. Whether spirometry abnormalities are associated with polysomnography (PSG) findings remains unclear.
Ammar Saadoon Alishlash, Anis Rabbani Nourani, A. K. M. Fazlur Rahman, Dima Ezmigna, Tarig Ali‐Dinar   +4 more
wiley   +1 more source

A Broadband Tunable Coaxial Attenuator Based on Graphene

IEEE Access, 2019
A dynamically tunable coaxial attenuator based on graphene is presented in this paper. The attenuator is achieved by inserting a graphene sandwich structure (GSS) inside the dielectric of coaxial line along the propagation direction of electromagnetic ...
Hui Chen, Zhen Guo Liu, Wei Bing Lu, An Qi Zhang, Hao Chen   +4 more
doaj   +1 more source

Amplitude-Phase Variation in a Graphene-Based Microstrip Line

Micromachines, 2022
A graphene-based transmission line with independent amplitude and phase variation capability is proposed. Variation of graphene’s tunable conductivity by an applied DC bias is exploited in designing an attenuator and a phase shifter.
Muhammad Yasir, Sergej Fatikow, Olaf C. Haenssler   +2 more
doaj   +1 more source

A compact rotary vane attenuator [PDF]

, 1969
Rotary vane attenuator, when used as a front end attenuator, introduces an insertion loss that is proportional to the angle of rotation.
Nixon, D. L., Otosh, T. Y., Stelzried, C. T.   +2 more
core   +1 more source

Ethnic Differences in the Association Between SOD2 rs4880 and Hepatotoxicity in Pediatric Acute Lymphoblastic Leukemia: A Report From the REDIAL Consortium

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Treatment‐associated hepatotoxicity (TAH) is a common complication of pediatric acute lymphoblastic leukemia (ALL) treatment, but genetic risk factors remain poorly understood. We evaluated the SOD2 rs4880 variant in 544 children with ALL at Texas Children's Hospital. After adjusting for demographic and clinical covariates, the rs4880 C allele
Emily J. Mason, John P. Woodhouse, Joanna S. Yi, M. Monica Gramatges, Olga A. Taylor, Veronica A. Morales, Shalini Dhamodharan, Marley Roberts, Karen R. Rabin, Philip J. Lupo, Michael E. Scheurer, Van Huynh, Steven D. Mittelman, Etan Orgel, Austin L. Brown   +14 more
wiley   +1 more source

Decline in AmpC β-lactamase-producing Escherichia coli in a Dutch teaching hospital (2013-2016). [PDF]

PLoS ONE, 2018
OBJECTIVE:The objective of this study is to determine the prevalence of rectal carriage of plasmid- and chromosome-encoded AmpC β-lactamase-producing Escherichia coli and Klebsiella spp.
Evert den Drijver, Jaco J Verweij, Carlo Verhulst, Stijn Oome, Joke Soer, Ina Willemsen, Eefje J A Schrauwen, Marjolein F Q Kluytmans-van den Bergh, Jan A J W Kluytmans   +8 more
doaj   +1 more source

Laser Calibration System for Time of Flight Scintillator Arrays

, 2020
A laser calibration system was developed for monitoring and calibrating time of flight (TOF) scintillating detector arrays. The system includes setups for both small- and large-scale scintillator arrays.
Beck, A., Beck, S. May-Tal, Cruz-Torres, R., Denniston, A., Hauenstein, F., Hen, O., Hrnjic, A., Korover, I., Kutz, T., Nambrath, A., Olivenboim, M., Piasetzky, E., Pybus, J. R., Schmidt, A., Segarra, E. P., Toledo, P., Weinstein, L. B.   +16 more
core   +1 more source

Assessing Cognitive Functioning in Children With Brain Tumors: Interaction of Neighborhood Social Determinants of Health and Neurological Risk

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background This study investigated how neighborhood‐level social determinants of health (SDOH), including redlining and neurological risk, interact to influence cognitive outcomes in children treated for brain tumors (CTBT). Methods A retrospective chart review of 161 CTBT aged 5–17 was conducted.
Alannah R. Srsich, Manali Zope, Peter M. Fantozzi, Cassie N. Kline, Iris Paltin, Matthew C. Hocking   +5 more
wiley   +1 more source