Results 51 to 60 of about 530,095 (289)

Instrumental Variables Regression with Weak Instruments [PDF]

Econometrica, 1997
Summary: This paper develops asymptotic distribution theory for single-equation instrumental variables regression when the partial correlations between the instruments and the endogenous variables are weak, here modeled as local to zero. Asymptotic representations are provided for various statistics, including two-stage least squares (TSLS) and limited
Douglas Staiger, James H. Stock
openaire   +2 more sources

Spatiotemporal and quantitative analyses of phosphoinositides – fluorescent probe—and mass spectrometry‐based approaches

FEBS Letters, EarlyView.
Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho, Shin Morioka, Junko Sasaki, Takehiko Sasaki   +3 more
wiley   +1 more source

An Instrument Concept for High‐Resolution Observations of the Solar Wind Electron Strahl Using Coded Aperture Imaging

Earth and Space Science
In this concept study, we explore coded aperture imaging as a high‐angular resolution imaging technique for suprathermal electron strahl observations in the solar wind.
Riley A. Reid, Robert Marshall
doaj   +1 more source

Mach–Zehnder Modulators for Microwave Polarization Measurement in Astronomy Applications

Sensors, 2023
This paper presents a study of the performances of different Mach–Zehnder modulation technologies with applications in microwave polarimeters based on a near-infrared (NIR) frequency up-conversion stage, allowing for optical correlation and signal ...
Francisco J. Casas, Guillermo Pascual-Cisneros   +1 more
doaj   +1 more source

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

FEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe, Tanmay Kumar Mohanty, Rashna Bhandari, Dorothea Fiedler   +3 more
wiley   +1 more source

Radicular Intracanal Splitting Forces and Cutting Efficiency of NiTi Rotary Versus Reciprocating Systems: A Comparative In Vitro Study

Cosmetics, 2023
This study aimed to compare the intracanal lateral force and cutting efficiency associated with two engine-driven nickel-titanium (NiTi) systems during root canal shaping.
Anas Al-Jadaa, Ranya F. Alsmadi, Wesal M. Salem, Aya A. Abdulridha, Kelvin I. Afrashtehfar   +4 more
doaj   +1 more source

The planar cell polarity protein Vangl2 interacts with the PDZ‐domains of Scribble but not with a unique PDZ‐like domain in Inturned

FEBS Letters, EarlyView.
Structural and biochemical characterisations show that the planar cell polarity (PCP) protein Inturned harbours a unique PDZ‐like domain that does not bind canonical PDZ‐binding motifs (PBMs) like that of another PCP protein Vangl2. In contrast, the apical‐basal polarity protein Scribble contains four PDZ domains that bind Vangl2, but one PDZ domain ...
Stephan Wilmes, Jan Brysch, Carmen Gelze, Lilli Meier, Daniel Kümmel   +4 more
wiley   +1 more source

Plywood Jig—A New Technique for Root Canal Curvature Measurement

Applied Sciences, 2021
The successful outcome of endodontic treatment is dependent on complete cleaning, shaping as well as three dimensional obturation of the root canal system.
Saleem D. Makandar, Mohammed Imran Khaiser, Sneha R. Mali, Mohmed Isaqali Karobari, Anand Marya, Pietro Messina, Giuseppe Alessandro Scardina   +6 more
doaj   +1 more source

Instruments and Maintenance

Monaldi Archives for Chest Disease, 2015
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Agli, L Lazzari, De Caprio, M T, Trisolini, R, Patelli, M   +3 more
openaire   +5 more sources

Applied instrumentation for civil engineering at the American University of Beirut [PDF]

, 2016
This article describes the development of a course on Applied Instrumentation for Civil Engineering students at the American University of Beirut. It is an elective course for civil and environmental engineering students and for electrical and computer ...
Elhajj, Imad H., Gurunian, Mihran, Rishani, Nadeen R.   +2 more
core   +1 more source