نتایج جستجو برای: pnc
تعداد نتایج: 730 فیلتر نتایج به سال:
The complete phononic band gap (PnBG) of a phononic crystal (PnC) slab is used to efficiently and simultaneously confine both flexural and extensional (longitudinal) elastic vibrations in a resonator. The PnC structure is fabricated by etching a hexagonal (honeycomb) array of air holes in a silicon (Si) slab. Flexural and extensional acoustic modes in the structure are directly excited by a pie...
The adverse health impact of particles and ultrafine (UFP) is proven, highlighting the need measuring particle number concentration (PNC) dominated by UFP. So far, PNC had never been measured in Strasbourg urban area (France). present study on size distribution measurements an UFP-3031 analyzer was conducted during winter 2019 a background roadside multi-instrumented sites (Black Carbon, chemic...
Francium is an excellent system to study the nuclear weak force due to its large nucleus and relatively simple atomic structure. The FrPNC experiment has a facility to produce cold trapped atomic francium samples for parity non-conservation studies. We are preparing to measure both the nuclear spin independent and dependent parts of the weak interaction in francium. The first one gives informat...
We estimate the effect of tensor parity nonconserving (PNC) interaction in 181TaO+ molecular cation. It can be used to probe unknown quadrupole distribution neutrons inside Ta nucleus. To this end, we evaluate constant which characterizes using relativistic Fock space coupled cluster theory for electronic structure modelling. The 3Δ1 state TaO+ cation measure PNC is found ground one agreement w...
Estimating plant nitrogen concentration (PNC) has been conducted using vegetation indices (VIs) from UAV-based imagery, but color features have rarely considered as additional variables. In this study, the VIs and moments (color feature) were calculated RGB images, then partial least square regression (PLSR) random forest (RF) models established to estimate PNC through fusing moments. The resul...
BACKGROUND The use of maternal health care is limited in India despite several programmatic efforts for its improvement since the late 1980's. The use of maternal health care is typically patterned on socioeconomic and cultural contours. However, there is no clear perspective about how socioeconomic differences over time have contributed towards the use of maternal health care in India. METHO...
BACKGROUND There are increasing efforts to monitor progress in maternal and neonatal care, with household surveys the main mode of data collection. Postnatal care (PNC) is considered a priority indicator yet few countries report on it, and the need to improve the construct validity associated with PNC questions is recognized. OBJECTIVES To determine women's knowledge of what happens to the ba...
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