As mentioned in a previous paper (Viateau & Rapaport CITE), the orbit of asteroid (17) Thetis is strongly perturbed by two large minor planets, (4) Vesta and (11) Parthenope. These strong ...gravitational perturbations enabled us to determine both the mass of Vesta and the mass of Parthenope. We also independently derived the mass of Vesta from observations of (197) Arete. The weighted mean of the two results gives the value $(1.306\pm 0.016) 10^{-10}$ $M_{\odot}$ (solar mass) for the mass of Vesta, and its derived mean density is ($3.3\pm 0.5$) g/cm3. For (11) Parthenope, the values $(2.56\pm 0.07) 10^{-12}$ $M_{\odot}$ and $(2.3\pm 0.2) $ g/cm3 were obtained, respectively for its mass and its mean density.
In 1994-1996 the Sun and the Earth passed through the equatorial plane of Saturn and therefore through the orbital planes of its main satellites. During this period, phenomena involving seven of ...these satellites were observed. Light curves of eclipses by Saturn and of mutual eclipses and occultations were recorded by the observers of the international campaign PHESAT95 organized by the Institut de mécanique céleste, Paris, France. Herein, we report 66 observations of 43 mutual events from 16 sites. For each observation, information is given about the telescope, the receptor, the site and the observational conditions. This paper gathers together all these data and gives a first estimate of the precision providing accurate astrometric data useful for the development of dynamical models.
The Bordeaux and Valinhos CCD meridian circles Viateau, B.; Réquième, Y.; Le Campion, J. F. ...
Astronomy & astrophysics. Supplement series,
01/1999, Letnik:
134, Številka:
1
Journal Article
Recenzirano
Odprti dostop
A first CCD $512\times 512$ camera working in scan mode (declination field $14'$) was mounted in 1994 on the Bordeaux CCD meridian circle. After a testing period, this camera was installed on the ...Valinhos CCD meridian circle (near São Paulo, Brazil), as part of a collaboration between Bordeaux Observatory and the Instituto Astronomico e Geofisico of São Paulo. A second improved CCD $1024\times 1024$ camera, with a declination field of $28'$, was installed on the Bordeaux instrument in June 1996. The mean internal precision of a single observation is about $0.04''$ in both coordinates for $9\leq V\leq 14$. In the same magnitude range, magnitudes can also be obtained with an internal precision of about 0.05 mag. Both instruments can participate efficiently in extending the Hipparcos- Tycho frame, during the next decade. Among other duties, the Bordeaux CCD meridian circle is being used since January 1997 for completing the Méridien 2000 project. The characteristics of both instruments and some results obtained with them are presented in this paper.
During four years, systematic observations have been conducted in drift scan mode with the Bordeaux automated meridian circle in the declination band $+11\degr \leq \delta \leq +18\degr$. The ...resulting astrometric catalog includes about $2.3\times 10^6$ stars down to the magnitude limit $V_{\rm M}=16.3$. Nearly all stars (96% ) have been observed at least 6 times, the catalog being complete down to $V_{\rm M}=15.4$. The median internal standard error in position is ${\sim} 35$ mas in the magnitude range $11 < V_{\rm M} < 15$, which degrades to ${\sim} 50$ mas when the faintest stars are considered. M2000 also provides one band photometry with a median internal standard error of ${\sim} 0.04$ mag. Comparisons with the Hipparcos and bright part of Tycho-2 catalogs have enabled us to estimate external errors in position to be lower than 40 mas. In this zone and at epoch 1998, the faint part of Tycho-2 is found to have an accuracy of 116 mas in α instead of 82 mas deduced from the model-based standard errors given in the catalog.
A&A 376, 325 During four years, systematic observations have been conducted in drift scan
mode with the Bordeaux automated meridian circle in the declination band +11 ;
+18. The resulting astrometric ...catalog includes about 2 300 000 stars down to
the magnitude limit V_M=16.3. Nearly all stars (96%) have been observed at
least 6 times, the catalog being complete down to V_M=15.4. The median internal
standard error in position is about 35 mas in the V_M magnitude range 11 ;
15, which degrades to about 50 mas when the faintest stars are considered.
M2000 provides also one band photometry with a median internal standard error
of 0.04 mag. Comparisons with the Hipparcos and bright part of Tycho-2 catalogs
have enabled to estimate external errors in position to be lower than 40 mas.
In this zone and at epoch 1998, the faint part of Tycho-2 is found to have an
accuracy of 116 mas in alpha instead of 82 mas deduced from the model-based
standard errors given in the catalog.
Objectives To describe the use, complications and outcome of Finney or Jaboulay pyloroplasties for the treatment of benign gastric outlet lesions in dogs and cats. Materials and Methods The medical ...records of dogs and cats surgically treated with Finney or Jaboulay pyloroplasty for benign gastric outflow tract disease in three institutions between January 1, 2015 and August 31, 2023 were retrospectively reviewed. Results Eight dogs and five cats were diagnosed with benign obstructive or perforating gastric outlet lesions, including chronic hypertrophic pyloric gastropathy ( n = 4), perforating pyloro‐duodenal peptic ulcer (4), sub‐obstructive pyloro‐duodenal eosinophilic sclerosing fibroplasia (2) and antral or proximal duodenal obstructive mass (3). Nine cases were treated using hand‐sewn Finney pyloroplasty and four cases were treated using stapled Jaboulay pyloroplasty. No major complications were recorded. Cases were followed for a median of 16.1 11 to 29.6 months. At the last follow‐up, the outcome was excellent in all cases, with no clinical signs recorded and no medical treatment required. Clinical Significance This case series suggests that Finney and Jaboulay pyloroplasties were safe and effective procedures for the surgical treatment of benign obstructive or perforating gastric outlet lesions in dogs and cats.
Dogs (n = 15) that were presented to a single veterinary teaching hospital with elbow dysplasia-associated lameness between September 2021 and May 2022, and were determined to require arthroscopy ...based on imaging results, were prospectively recruited into the study. The median duration of lameness was 4 (min 1, max 24) months.
Various breeds were represented with a median body weight of 31.6 (min 15, max 46.4) kg and median age at presentation of 14 (min 8, max 83) months. Results of imaging modalities (CT) were consistent with medial coronoid disease with fissured or fragmented medial coronoid process in all dogs.
Feasibility of the needle arthroscopy (NA) procedure was firstly assessed in a preliminary cadaveric study in forelimbs (n = 10) collected from 10 adult dogs euthanised for reasons unrelated to the study. Elbow exploration was performed through a medial approach beginning with NA (1.9 mm 0° angle scope) followed by standard arthroscopy (SA; 2.4 mm 30° angle scope). The quality and extent of visualisation (scored through the number of anatomical structures visualised) were recorded and statistically compared. As the cadaver study indicated that NA allowed safe inspection of all structures in medial/caudal compartments, this procedure was then used in the dogs requiring treatment. In the clinical setting, elbow exploration was successful in all dogs and the treatment (removal of osteochondral fragments) was performed without requiring conversion into SA. One month after surgery, all dogs had an improvement in their lameness score (0-5) and 12/15 dogs were no longer lame. There was a reduction in Canine Orthopaedic Index scores measured a median of 99 (min 47, max 180) days after surgery (24 (IQR 19.5-31.5)) compared to the pre-operative period (49 (IQR 46.5-57); p < 0.001).
Needle arthroscopy-assisted removal of osteochondral fragments was performed in all dogs with satisfactory short-term clinical outcome. NA is a feasible technique for diagnosis and lesion assessment in dogs with a fissured or fragmented coronoid process. Larger clinical studies with longer follow-up are necessary to validate the NanoScope operative arthroscopy system as an alternative strategy to SA for video-assisted treatment of medial coronoid disease.
Medical records were reviewed for cats that underwent surgical treatment of traumatic ureteral rupture (TUR) using urinary diversion procedures between 2012 and 2019.
Five cats had presented with ...injuries associated with road traffic accidents. These included three cats with abdominal hernias that required surgical management. At a median of 15 days after the accident, cats represented with lethargy, the presence of an abdominal mass or with lower urinary tract symptoms and in all cats contrast diagnostic imaging showed proximal unilateral TUR with associated para-ureteral urinoma. Four cats received subcutaneous ureteral bypass (SUB) device placement and one had ureteral anastomosis over a stent. Unilateral cyst-like retroperitoneal fluid consistent with para-ureteral urinoma was observed in all cats and a diffuse retroperitoneal haematoma was noticed in four cats. No immediate major complications occurred, and all cats had post-operative serum creatinine concentration within the reference interval. The cat that had received a ureteral stent subsequently required placement of a SUB following stent encrustation 15 months after surgery. Median follow-up time was 34 (min 28, max 58) months and renal function was normal in all cats at the last follow-up.
Urinary diversion procedures provided long-term stable renal function following proximal TUR in these five cats. Delayed, subtle non-specific clinical signs subsequent to high-energy blunt trauma causing abdominal hernia and associated diffuse retroperitoneal haematoma, should raise suspicion of TUR.
AFAST: Abdominal focused assessment with sonography for trauma; SUB: Subcutaneous ureteral bypass; TUR: Traumatic ureteral rupture
During four years, systematic observations have been conducted in drift scan mode with the Bordeaux automated meridian circle in the declination band +11 ; +18. The resulting astrometric catalog ...includes about 2 300 000 stars down to the magnitude limit V_M=16.3. Nearly all stars (96%) have been observed at least 6 times, the catalog being complete down to V_M=15.4. The median internal standard error in position is about 35 mas in the V_M magnitude range 11 ; 15, which degrades to about 50 mas when the faintest stars are considered. M2000 provides also one band photometry with a median internal standard error of 0.04 mag. Comparisons with the Hipparcos and bright part of Tycho-2 catalogs have enabled to estimate external errors in position to be lower than 40 mas. In this zone and at epoch 1998, the faint part of Tycho-2 is found to have an accuracy of 116 mas in alpha instead of 82 mas deduced from the model-based standard errors given in the catalog.
This study evaluated success rates of surgical treatment of head and neck abscesses and draining tracts for suspected migrating vegetal foreign body and oropharyngeal penetrating injuries, and ...compared the outcomes according to whether a vegetal foreign body was identified in preoperative computed tomography (CT) examination.
This retrospective study involved 39 dogs that underwent CT and subsequent surgical exploration of abscesses and/or draining tracts in the head and neck, in a single institution between 2010 and 2021. Recorded data included signalment, history, physical examination, CT and surgical findings. The postoperative follow-up period was at least 8 months. Cases were classified according to whether a foreign body was identified on CT or was only suspected because of the presence of cavities and/or draining tracts on CT.
A vegetal foreign body was identified on CT in 11 of 39 cases and later confirmed at surgery in 10 cases. In 28 of 39 cases, a vegetal foreign body was not identified on CT, but in seven of these 28 cases it was found at surgery. Resolution of clinical signs was achieved in 11 of 11 cases when a vegetal foreign body was identified on CT and in 26 of 28 cases without a foreign body identified on CT. Two cases of recurrence were observed in animals in which no foreign body was detected.
In this population of dogs undergoing surgery after preoperative CT scan, we observed resolution of clinical signs after a single surgical procedure in 95% of the cases. All animals in which a foreign body was identified were cured.
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