Results 51 to 60 of about 715,538 (308)

Research on ultraprecision turning and profile-error compensation technology for multi-axis linkage [PDF]

Nanotechnology and Precision Engineering
In an ultraprecision turning process for small-diameter optical aspheric workpieces, tool-profile errors induce mid-frequency errors in the workpiece profile, limiting further improvements in precision.
Xipeng Guo, Jiabin Yuan, Wei Shi, Shaohui Yin   +3 more
doaj   +1 more source

Targeting p38α in cancer: challenges, opportunities, and emerging strategies

Molecular Oncology, EarlyView.
p38α normally regulates cellular stress responses and homeostasis and suppresses malignant transformation. In cancer, however, p38α is co‐opted to drive context‐dependent proliferation and dissemination. p38α also supports key functions in cells of the tumor microenvironment, including fibroblasts, myeloid cells, and T lymphocytes.
Angel R. Nebreda
wiley   +1 more source

Beat‐less algorithm based on dual‐frequency compensation in railway traction applications

IET Power Electronics, 2021
The beat phenomenon can be a critical issue in railway traction applications. This paper proposes a dual‐frequency compensation (DFC) method for the beat‐less algorithm to shift the spectrum of the beat voltages to a higher‐frequency region.
Lailai Shen, Jie Chen, Yang Kuang, Ruichang Qiu, Dao Zhou, Chao Wu, Zhigang Liu   +6 more
doaj   +1 more source

Design of broad-band PMD compensation filters [PDF]

, 2002
We describe a new design approach for broad-band polarization-mode dispersion (PMD) compensation filters. An efficient algorithm for minimization of the maximum differential group delay within a given frequency band is ...
Eyal, A., Yariv, A.
core  

On Preparing Entangled Pairs of Polarization Qubits in the Frequency Non-Degenerate Regime

, 2010
The problems associated with practical implementation of the scheme proposed for preparation of arbitrary states of polarization ququarts based on biphotons are discussed. The influence of frequency dispersion effects are considered, and the necessity of
A. G. White, A. V. Burlakov, A. V. Burlakov, D. F. V. James, D. Kaszlikowski, D. V. Horoshko, E. V. Moreva, G. Brida, H. Bechmann-Pasquinucci, H. Bechmann-Pasquinucci, M. Bourennane, M. Genovese, M. Rubin, M. V. Chekhova, M. V. Fedorov, P. G. Kwiat, P. G. Kwiat, S. P. Kulik, S. S. Straupe, S.-Y. Baek, T. E. Kiess, W. K. Wootters, Y. H. Kim, Y. H. Kim, Y. H. Shih, Yu. I. Bogdanov, Yu. I. Bogdanov   +26 more
core   +1 more source

Genetic attenuation of ALDH1A1 increases metastatic potential and aggressiveness in colorectal cancer

Molecular Oncology, EarlyView.
Aldehyde dehydrogenase 1A1 (ALDH1A1) is a cancer stem cell marker in several malignancies. We established a novel epithelial cell line from rectal adenocarcinoma with unique overexpression of this enzyme. Genetic attenuation of ALDH1A1 led to increased invasive capacity and metastatic potential, the inhibition of proliferation activity, and ultimately ...
Martina Poturnajova, Zuzana Kozovska, Ondrej Pos, Kristina Pavlov, Sachin Gulati, Peter Makovicky, Kristina Jakic, Monika Burikova, Eva Sedlackova, Barbora Svitkova, Silvia Tyciakova, Vojtech Bystry, Nicolas Blavet, Boris Tichy, Matej Hrnciar, Jaroslav Budis, Miroslav Tomas, Peter Dubovan, Georgina Kolnikova, Veronika Repaska, Nikoleta Mojzesova, Eva Zomborska, Daniel Pindak, Michal Mego, Tomas Szemes, Miroslava Matuskova   +25 more
wiley   +1 more source

Contrasting Effects of Pressure Compensation on TEOAE and DPOAE in Children With Negative Middle Ear Pressure

Trends in Hearing, 2018
In children with normal cochlear acuity, middle ear fluid often abolishes otoacoustic emissions (OAEs), and negative middle ear pressure (NMEP) reduces them. No convincing evidence of beneficial pressure compensation on distortion product OAE (DPOAE) has
Snezana A. Filipović, Mark P. Haggard, Helen Spencer, Goran Trajković   +3 more
doaj   +1 more source

Efficient CFO Compensation Method in Uplink OFDMA for Mobile WiMax

Journal of ICT Research and Applications, 2016
Mobile WiMax uses Orthogonal Frequency Division Multiple Access (OFDMA) in uplink where synchronization is a complex task as each user presents a different carrier frequency offset (CFO).
Lakshmanan Muthukaruppan, Parthasharathi Mallick, Nithyanandan Lakshmanan, Sai Krishna Marepalli   +3 more
doaj   +1 more source

RIPK4 function interferes with melanoma cell adhesion and metastasis

Molecular Oncology, EarlyView.
RIPK4 promotes melanoma growth and spread. RIPK4 levels increase as skin lesions progress to melanoma. CRISPR/Cas9‐mediated deletion of RIPK4 causes melanoma cells to form less compact spheroids, reduces their migratory and invasive abilities and limits tumour growth and dissemination in mouse models.
Norbert Wronski, Sławomir Lasota, Ewelina Madej, Anna A. Brożyna, Małgorzata Szczygieł, Agnieszka Harazin‐Lechowska, Jan Czerbniak, Janusz Rys, Jaroslaw Czyz, Agnieszka Wolnicka‐Glubisz   +9 more
wiley   +1 more source

Day/night variations of myeloid and lymphoid cell subsets in the murine inguinal lymph node

FEBS Open Bio, EarlyView.
The circadian system is involved in the temporal regulation of the immune system. Our study reveals that two innate immune populations, NKT cells and neutrophils, predominate at the beginning of the day in healthy mice, highlighting how the time of day influences immune responses.
Paula M. Wagner, César G. Prucca, Lucia Boffelli, Virginia A. Piqueras, Silvia G. Correa, Mariana Maccioni, Mario E. Guido   +6 more
wiley   +1 more source