Results 81 to 90 of about 2,314,111 (354)

Underwater Wireless Sensor Networks: Estimation of Acoustic Channel in Shallow Water

open access: yesApplied Sciences, 2020
Underwater sensor networks (UWSN) include a large number of devices and sensors which are positioned in a specific area to carry out monitoring in cooperation with each other as well as data collection. In this paper it has been studied and simulated the
Elma Zanaj   +4 more
doaj   +1 more source

How stable is the photon? [PDF]

open access: yes, 2013
Yes, the photon. While a nonzero photon mass has been under experimental and theoretical study for years, the possible implication of a finite photon lifetime lacks discussion.
Heeck, Julian
core   +2 more sources

One size does not fit all: An in vitro evaluation of the effects of bezafibrate and medroxyprogesterone acetate on human SH‐SY5Y and U‐87 MG cancer cells

open access: yesFEBS Open Bio, EarlyView.
Drugs previously repurposed to target blood cancers reduced neuroblastoma and glioblastoma cell growth and viability. However, their levels of anticancer activity were different and their clinical application may be problematic due to side effects at effective doses.
Abhishek Kharawatkar   +4 more
wiley   +1 more source

Lifetime Reproductive Effort

open access: yesThe American Naturalist, 2007
In a 1966 American Naturalist article, G. C. Williams initiated the study of reproductive effort (RE) with the prediction that longer-lived organisms ought to expend less in reproduction per unit of time. We can multiply RE, often measured in fractions of adult body mass committed to reproduction per unit time, by the average adult life span to get ...
Eric L, Charnov   +2 more
openaire   +3 more sources

Deriving Median Disk Lifetimes from Disk Lifetime Distributions

open access: yesResearch Notes of the AAS, 2022
Abstract Observations show that individual protoplanetary disk lifetimes vary from <1 Myr to ≫20 Myr. The disk lifetime distribution is currently unknown. For the example of a Gaussian distribution of the disk lifetime, I suggest a simple method for deducing such a disk lifetimes distribution.
openaire   +2 more sources

Aging Is a Key Driver for Adult Acute Myeloid Leukemia

open access: yesAging and Cancer, EarlyView.
Acute myeloid leukemia (AML) is a classical age‐related hematologic malignancy, and a key driver of AML is aging, which profoundly regulates intrinsic factors such as genomic instability, epigenetic reprogramming, and metabolic dysregulation, and alters bone marrow microenvironment.
Rong Yin, Haojian Zhang
wiley   +1 more source

Down and upconversion photoluminescence of ZrO2:Er3+ phosphor irradiated with 120 MeV gold ions

open access: yesMaterials Research Express, 2020
Down conversion and upconversion photoluminescence of pristine and gold ion irradiated ZrO _2 :Er ^3+ phosphor synthesized by solution combustion are reported.
H S Lokesha   +3 more
doaj   +1 more source

Mutant NPM1 in Acute Myeloid Leukemia Initiation and Maintenance

open access: yesAging and Cancer, EarlyView.
NPM1 mutations drive acute myeloid leukemia by acting as neomorphic transcriptional regulators that cooperate with Menin–MLL and XPO1 to sustain HOX/MEIS1 expression and block differentiation. Targeting these mutant‐specific transcriptional dependencies provides a rational therapeutic strategy for NPM1‐mutated AML.
Yanan Jiang   +3 more
wiley   +1 more source

Model Predictive Based Direct Power Control Method Using Switching State Preference for Independent Phase Loss Decrease of Three-Phase Pulsewidth Modulation (PWM) Rectifiers

open access: yesIEEE Access
Nowadays, active rectifiers are increasingly used, particularly in grid-connected applications. The high efficiency and reliability of active rectifiers become crucial for increasing the system performance.
Minh Hoang Nguyen   +2 more
doaj   +1 more source

Quantifying the Effect of Catalysts on the Lifetime of Transformer Oil

open access: yesApplied Sciences, 2020
The effect of catalysts in the form of a transformer copper winding with Kraft paper insulation on the lifetime of transformer oil was studied via ultraviolet-visible (UV-Vis) spectroscopy and Fourier transform infrared (FT-IR) spectroscopy.
Radek Polanský   +4 more
doaj   +1 more source

Home - About - Disclaimer - Privacy