24 research outputs found
Clinical courses and outcomes of five patients with primary lung cancer surgically treated while affected by Severe acute respiratory syndrome coronavirus 2
Long-term results after surgical treatment of the dominant lung adenocarcinoma associated with ground-glass opacities
Cold Jupiters and improved masses in 38 Kepler and K2 small planet systems from 3661 HARPS-N radial velocities. No excess of cold Jupiters in small planet systems
The exoplanet population characterized by relatively short orbital periods
( d) around solar-type stars is dominated by super-Earths and
sub-Neptunes. However, these planets are missing in our Solar System and the
reason behind this absence is still unknown. Two theoretical scenarios invoke
the role of Jupiter as the possible culprit: Jupiter may have acted as a
dynamical barrier to the inward migration of sub-Neptunes from beyond the water
iceline; alternatively, Jupiter may have reduced considerably the inward flux
of material (pebbles) required to form super-Earths inside that iceline. Both
scenarios predict an anti-correlation between the presence of small planets
(SPs) and that of cold Jupiters (CJs) in exoplanetary systems. To test that
prediction, we homogeneously analyzed the radial-velocity (RV) measurements of
38 Kepler and K2 transiting SP systems gathered over almost 10 years with the
HARPS-N spectrograph, as well as publicly available RVs collected with other
facilities. We detected five CJs in three systems, two in Kepler-68, two in
Kepler-454, and a very eccentric one in K2-312. We derived an occurrence rate
of for CJs with and 1-10 AU, which is
lower but still compatible at with that measured from RV surveys
for solar-type stars, regardless of the presence or absence of SPs. The sample
is not large enough to draw a firm conclusion about the predicted
anti-correlation between SPs and CJs; nevertheless, we found no evidence of
previous claims of an excess of CJs in SP systems. As an important by-product
of our analyses, we homogeneously determined the masses of 64 Kepler and K2
small planets, reaching a precision better than 5, 7.5 and 10 for 25,
13 and 8 planets, respectively. Finally, we release the 3661 HARPS-N radial
velocities used in this work to the scientific community. [Abridged]Comment: 21 pages, 10 figures, 10 tables, published in Astronomy and
Astrophysics. The updated version of the article takes into account the A&A
language editing and guidelines. Tables 1, A.1 and full Table 2 are available
at the CDS via anonymous ftp to cdsarc.cds.unistra.fr (130.79.128.5) or via
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/677/A3
Cold Jupiters and improved masses in 38 Kepler and K2 small-planet systems from 3661 high-precision HARPS-N radial velocities. No excess of cold Jupiters in small-planet systems
The exoplanet population characterized by relatively short orbital periods
( d) around solar-type stars is dominated by super-Earths and
sub-Neptunes. However, these planets are missing in our Solar System and the
reason behind this absence is still unknown. Two theoretical scenarios invoke
the role of Jupiter as the possible culprit: Jupiter may have acted as a
dynamical barrier to the inward migration of sub-Neptunes from beyond the water
iceline; alternatively, Jupiter may have reduced considerably the inward flux
of material (pebbles) required to form super-Earths inside that iceline. Both
scenarios predict an anti-correlation between the presence of small planets
(SPs) and that of cold Jupiters (CJs) in exoplanetary systems. To test that
prediction, we homogeneously analyzed the radial-velocity (RV) measurements of
38 Kepler and K2 transiting SP systems gathered over almost 10 years with the
HARPS-N spectrograph, as well as publicly available RVs collected with other
facilities. We detected five CJs in three systems, two in Kepler-68, two in
Kepler-454, and a very eccentric one in K2-312. We derived an occurrence rate
of for CJs with and 1-10 AU, which is
lower but still compatible at with that measured from RV surveys
for solar-type stars, regardless of the presence or absence of SPs. The sample
is not large enough to draw a firm conclusion about the predicted
anti-correlation between SPs and CJs; nevertheless, we found no evidence of
previous claims of an excess of CJs in SP systems. As an important by-product
of our analyses, we homogeneously determined the masses of 64 Kepler and K2
small planets, reaching a precision better than 5, 7.5 and 10 for 25,
13 and 8 planets, respectively. Finally, we release the 3661 HARPS-N radial
velocities used in this work to the scientific community. [Abridged]Comment: 21 pages, 10 figures, 10 tables, published in Astronomy and
Astrophysics. The updated version of the article takes into account the A&A
language editing and guidelines. Tables 1, A.1 and full Table 2 are available
at the CDS via anonymous ftp to cdsarc.cds.unistra.fr (130.79.128.5) or via
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/677/A3
Thymomectomy plus total thymectomy versus simple thymomectomy for early-stage thymoma without myasthenia gravis: A European Society of Thoracic Surgeons Thymic Working Group Study
OBJECTIVES: Resection of thymic tumours including the removal of both the tumour and the thymus gland (thymothymectomy; TT) is the procedure of choice and is recommended in most relevant articles in the literature. Nevertheless, in recent years, some authors have suggested that resection of the tumour (simple thymomectomy; ST) may suffice from an oncological standpoint in patients with early-stage thymoma who do not have myasthenia gravis (MG) (non-MG). The goal of our study was to compare the short-and long-term outcomes of ST versus TT in non-MG early-stage thymomas using the European Society of Thoracic Surgeons thymic database. METHODS: A total of 498 non-MG patients with pathological stage I thymoma were included in the study. TT was performed in 466 (93.6%) of 498 patients who had surgery with curative intent; ST was done in 32 (6.4%). The completeness of resection, the rate of complications, the 30-day mortality, the overall recurrence and the freedom from recurrence were compared. We performed crude and propensity score-adjusted comparisons by surgical approach (ST vs TT). RESULTS: TT showed the same rate of postoperative complications, 30-day mortality and postoperative length of stay as ST. The 5-year overall survival rate was 89% in the TT group and 55% in the ST group. The 5-year freedom from recurrence was 96% in the TT group and 79% in the ST group. CONCLUSION: Patients with early-stage thymoma without MG who have a TT show significantly better freedom from recurrence than those who have an ST, without an increase in postoperative morbidity rate
Risk factors and cancer recurrence associated with postoperative complications after thoracoscopic lobectomy for clinical stage I non‐small cell lung cancer
Ricognizione dell'attività svolta dall'Autorità per l'energia elettrica e il gas nell'anno 2006 e nei primi quattro mesi del 2007 con riferimento agli ambiti della Direzione Mercati
Descrizione dell'attività svolta dall'Autorità per l'energia elettrica e il gas nell'anno 2006 e nei primi quattro mesi del 2007 con riferimento agli ambiti di competenza della Direzione Mercat