Results 51 to 60 of about 6,965,165 (306)

Single-cycle all-fiber frequency comb

open access: yesAPL Photonics, 2021
Single-cycle pulses with a deterministic carrier-envelope phase enable the study and control of light–matter interactions at the sub-cycle timescale, as well as the efficient generation of low-noise multi-octave frequency combs.
Sida Xing   +6 more
doaj   +1 more source

A 3-to-5 V Input, 80 Peak-to-Peak Voltage (Vpp) Output, 2.75% Total Harmonic Distortion Plus Noise (THD+N), 2.9 μF Load Piezoelectric Actuator Driver with Four-Switch Buck–Boost

open access: yesActuators, 2023
As human–computer interaction has become increasingly popular, haptic technology has become a research topic of great interest, since vibration perception, as a type of haptic feedback, can enhance user experience during an interaction. However, the high
Rui Ye   +3 more
doaj   +1 more source

Impact of Radiation Therapy on Physical and Psychosocial Health of Adolescents and Young Adults: A Joint Report From the Children's Oncology Group AYA and Radiation Oncology Committees

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Rates of cancer among adolescents and young adults (AYA), age 15–39 years, are increasing. Consequently, radiation oncologists are treating more AYAs who have diagnoses spanning both pediatric and adult practices. Compared to pediatric and older adult patients, AYAs face a unique set of challenges.
Hesham Elhalawani   +7 more
wiley   +1 more source

A Monolithic CMOS-MEMS SoC with 1.8 mm/s and 2 mK Resolution for Flow and Temperature Sensing via a Microcantilever Array

open access: yesMicrosystems & Nanoengineering
This paper presents a highly sensitive CMOS-MEMS system-on-chip (SoC) for multiparameter sensing, achieved through the monolithic integration of a capacitive microcantilever array with on-chip signal processing circuitry.
Feiyun Wang   +4 more
doaj   +1 more source

On Harvested Frequencies & On Powering Frequencies & On Unbound Frequencies

open access: yes
On Harvested Frequencies: The Tesla Resonant CollectorTesla did not invent free energy. He discovered that the Earth is already a power source. The planet is a spherical capacitor — ionosphere above, ground below, atmosphere as dielectric — continuously charged by 50 lightning strikes per second. The resonant frequency of this cavity is 7.83 Hz.
Godfrey, Mark Roy, Tesla, Nikola
openaire   +2 more sources

A New Frequency Transformer or Frequency Changer

open access: yesProceedings of the Institute of Radio Engineers, 1927
Alternating current having a frequency which is any fractional value of the frequency of a supplied current, can be obtained by means of a triode oscillator. The phenomenon seems to be due to the "attraction" of two nearly equal frequencies occurring in the triode circuit and to the non-linear characteristic of a triode.
openaire   +1 more source

Social Functioning Within the First Years After Pediatric Brain Tumor Diagnosis and the Relationship With Family Psychosocial Risk

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Survivors of pediatric brain tumors (PBTs) can experience long‐term social difficulties, impacting quality of life. Beyond medical and environmental factors, family psychosocial risk may play a role in social outcomes by shaping the caregiving environment and may provide intervention options.
Renske H. Houben   +4 more
wiley   +1 more source

A Wide Frequency Scanning Printed Bruce Array Antenna with Bowtie and Semi-Circular Elements

open access: yesSensors, 2020
A printed edge-fed counterpart of the wire Bruce array antenna, for frequency scanning applications, is presented in this paper. The unit-cell of the proposed antenna consists of bowtie and semi-circular elements to achieve wide bandwidth from below 22 ...
Zeeshan Ahmed   +2 more
doaj   +1 more source

Estimating stationary mass, frequency by frequency

open access: yesCoRR
Suppose we observe a trajectory of length $n$ from an exponentially $α$-mixing stochastic process over a finite but potentially large state space. We consider the problem of estimating the probability mass placed by the stationary distribution of any such process on elements that occur with a certain frequency in the observed sequence. We estimate this
Milind Nakul   +2 more
openaire   +4 more sources

Retrospective Analysis of Donor Lymphocyte Infusions in Pediatric Patients With Mixed Chimerism After Hematopoietic Stem Cell Transplantation

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Allogeneic hematopoietic stem cell transplantation (alloHSCT) is an essential therapy for several malignant and nonmalignant diseases, but relapse and graft loss remain the principal threats to its success. Routine monitoring of chimerism and minimal residual disease (MRD) enables early detection of imminent recurrence and guides ...
Carmen Junk   +10 more
wiley   +1 more source

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