4 research outputs found
Quantum mechanical which-way experiment with an internal degree of freedom
For a particle travelling through an interferometer, the trade-off between
the available which-way information and the interference visibility provides a
lucid manifestation of the quantum mechanical wave-particle duality. Here we
analyze this relation for a particle possessing an internal degree of freedom
such as spin. We quantify the trade-off with a general inequality that paints
an unexpectedly intricate picture of wave-particle duality when internal states
are involved. Strikingly, in some instances which-way information becomes
erased by introducing classical uncertainty in the internal degree of freedom.
Furthermore, even imperfect interference visibility measured for a suitable set
of spin preparations can be sufficient to infer absence of which-way
information. General results are illustrated with a proof-of-principle single
photon experiment.Comment: 8 pages, 3 figure
Children and adolescents with pulmonary arterial hypertension : baseline and follow-up data from the polish registry of pulmonary hypertension (BNP-PL)
We present the results from the pediatric arm of the Polish Registry of Pulmonary
Hypertension. We prospectively enrolled all pulmonary arterial hypertension (PAH) patients,
between the ages of 3 months and 18 years, who had been under the care of each PAH center
in Poland between 1 March 2018 and 30 September 2018. The mean prevalence of PAH was
11.6 per million, and the estimated incidence rate was 2.4 per million/year, but it was geographically
heterogeneous. Among 80 enrolled children (females, n = 40; 50%), 54 (67.5%) had PAH associated
with congenital heart disease (CHD-PAH), 25 (31.25%) had idiopathic PAH (IPAH), and 1 (1.25%)
had portopulmonary PAH. At the time of enrolment, 31% of the patients had significant impairment
of physical capacity (WHO-FC III). The most frequent comorbidities included shortage of growth
(n = 20; 25%), mental retardation (n = 32; 40%), hypothyroidism (n = 19; 23.8%) and Down syndrome
(n = 24; 30%). The majority of children were treated with PAH-specific medications, but only half of
them with double combination therapy, which improved after changing the reimbursement policy.
The underrepresentation of PAH classes other than IPAH and CHD-PAH, and the geographically
heterogeneous distribution of PAH prevalence, indicate the need for building awareness of PAH
among pediatricians, while a frequent coexistence of PAH with other comorbidities calls for a
multidisciplinary approach to the management of PAH children
2nd workshop on information technologies for logistics
The main purpose of the workshop is to provide a forum For researchers and practitioners to present and discuss current issues concerning use of ICT in logistic applications (hardware and software). There will be also an opportunity for hardware integrators, software developers and logistics companies to demonstrate their solutions, as well as achievements, in different logistic systems
2nd workshop on information technologies for logistics
The main purpose of the workshop is to provide a forum For researchers and practitioners to present and discuss current issues concerning use of ICT in logistic applications (hardware and software). There will be also an opportunity for hardware integrators, software developers and logistics companies to demonstrate their solutions, as well as achievements, in different logistic systems