Results 11 to 20 of about 1,065 (135)

A low‐complexity transmit combining method for downlink of massive multiuser multiple input multiple output systems

open access: yesElectronics Letters, Volume 59, Issue 10, May 2023., 2023
In this paper, a low‐complexity transmit combining scheme for the massive MU‐MIMO systems with time division duplex si proposed, devised in a similar manner as the well‐known Tomlinson‐Harashima precoding (THP) scheme. In order to suppress multiuser interference with a lower computational complexity we here employ the Gram‐Schmidt orthogonalization ...
Rade P. Dabetic, Goran B. Markovic
wiley   +1 more source

Attenuation of Piwil2 induced by hypoxic postconditioning prevents cerebral ischemic injury by inhibiting CREB2 promoter methylation

open access: yesBrain Pathology, Volume 33, Issue 1, January 2023., 2023
Schematic depicting mechanism by which HPC protects neurons against tGCI in CA1 through Piwil2‐mediated epigenetics. Abstract Epigenetic modification contributes to the pathogenesis of cerebral ischemia. Piwil2 belongs to the PIWI proteins subfamily and has a key role in the regulation of gene transcription through epigenetics.
Lixuan Zhan   +8 more
wiley   +1 more source

Upper Troposphere Smoke Injection From Large Areal Fires

open access: yesJournal of Geophysical Research: Atmospheres, Volume 126, Issue 23, 16 December 2021., 2021
Abstract Large areal fires, such as those ignited following a nuclear detonation, can inject smoke into the upper troposphere and lower stratosphere. Detailed fire simulations allow for assessment of how local weather interacts with these fires and affects smoke lofting.
Stephanie Redfern   +5 more
wiley   +1 more source

Vision Mātauranga research directions: opportunities for iwi and hapū management plans

open access: yesKōtuitui: New Zealand Journal of Social Sciences Online, Volume 16, Issue 2, Page 371-383, November 2021., 2021
ABSTRACT The Ministry of Business, Innovation and Employment (MBIE) Vision Mātauranga policy has created a clear message for researchers in Aotearoa/New Zealand – that research conducted in Aotearoa New Zealand should recognise and support the ‘unlocking of the innovative potential of Māori for the benefit of all New Zealand’ and be designed with a ...
Lucy H. Kaiser, Wendy S. A. Saunders
wiley   +1 more source

The obstetrical dilemma hypothesis: there's life in the old dog yet

open access: yesBiological Reviews, Volume 96, Issue 5, Page 2031-2057, October 2021., 2021
ABSTRACT The term ‘obstetrical dilemma’ was coined by Washburn in 1960 to describe the trade‐off between selection for a larger birth canal, permitting successful passage of a big‐brained human neonate, and the smaller pelvic dimensions required for bipedal locomotion. His suggested solution to these antagonistic pressures was to give birth prematurely,
Martin Haeusler   +5 more
wiley   +1 more source

Genetic variations in key microRNA processing genes and risk of head and neck cancer: a case-control study in Chinese population. [PDF]

open access: yesPLoS ONE, 2012
MicroRNAs (miRNAs) have been reported to play a key role in oncogenesis. Genetic variations in miRNA processing genes and miRNA binding sites may affect the biogenesis of miRNA and the miRNA-mRNA interactions, hence promoting tumorigenesis.
Hongxia Ma   +8 more
doaj   +1 more source

Are fathers a good substitute for mothers? Paternal care and growth rates in Shodagor children

open access: yesDevelopmental Psychobiology, Volume 63, Issue 6, September 2021., 2021
Abstract Biparental care is a hallmark of human social organization, though paternal investment varies between and within societies. The facultative nature of paternal care in humans suggests males should invest when their care improves child survival and/or quality, though testing this prediction can be challenging because of the difficulties of ...
K. E. Starkweather   +5 more
wiley   +1 more source

Elevated P‐Element‐Induced Wimpy‐Testis‐Like Protein 1 Expression Predicts Unfavorable Prognosis for Patients with Various Cancers

open access: yesJournal of Oncology, Volume 2021, Issue 1, 2021., 2021
Increasing evidence has shown that overexpression of P‐element‐induced wimpy‐testis (PIWI)‐like protein 1 (PIWIL1) was associated with unfavorable prognosis of patients with various types of cancers. Herein, we conducted this meta‐analysis to identify the clinicopathological and prognostic value of the PIWIL1 expression in cancers.
Kehua Jiang   +7 more
wiley   +1 more source

PIWI expression and function in cancer

open access: yesFrontiers in Genetics, 2012
PIWI proteins, a subclade of the Argonaute family proteins, are expressed predominantly in the germline and bind to PIWI-interacting RNAs (piRNAs), which are 25-31 nucleotides in length. The PIWI/piRNA pathway plays critical roles in germline development
Ryusuke eSuzuki   +2 more
doaj   +1 more source

HIWI is associated with prognosis in patients with hepatocellular carcinoma after curative resection [PDF]

open access: yesCancer, 2011
AbstractBACKGROUND:PIWI protein family was found to play an important role in stem cell self‐renewal. Overexpression of HIWI, the human homolog of PIWI family proteins, was found in several solid tumors, although the role of HIWI in hepatocellular carcinoma (HCC) and its prognostic value remain unclear.METHODS:HIWI expression was measured in stepwise ...
Yi-Ming, Zhao   +10 more
openaire   +2 more sources

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