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In this study, we build on a foundation of previous biostratigraphic studies for the Scotian Basin, offshore eastern Canada, by conducting new quantitative multidisciplinary biostratigraphic studies of the Mesozoic sections in eight wells: Bonnet P-23, Chebucto K-90, Cohasset L-97, Glenelg J-48, Glooscap C-63, Mohican I-100, South Desbarres O-76, and South Griffin J-13. These wells were chosen to provide good spatial coverage, stratigraphic penetration, and correlation with the seismic grid. We have also evaluated pre-existing biostratigraphic data and undertaken the well-log sequence-stratigraphic interpretation of Upper Triassic to Cenozoic sediments in 16 additional wells using a consistent multidisciplinary event scheme derived from the new wells. Key to the dating of some horizons has been integration of the palynology and micropaleontology (disciplines mostly used previously on the Scotian Margin) with new nannofossil data. Simultaneously we have closely integrated the biostratigraphic results with lithofacies, well-log, and seismic interpretations. Using this integrated approach, we have identified nine regionally mappable sequence-stratigraphic events (unconformities and maximum flooding surfaces, or MFSs): the Intra-Oligocene Unconformity; the Ypresian Unconformity; the Turonian/Cenomanian Unconformity; the Late Albian Unconformity; the Aptian/Barremian Unconformity; the Intra-Hauterivian MFS; the Near-Base Cretaceous Unconformity; the Tithonian MFS; and the Top-Callovian MFS. Additional events of local extent were also recognized in some wells. Our study has led to significant revision of some previous lithostratigraphic picks. The Early Jurassic on the Scotian Margin remains poorly resolved and may be represented by an unconformity on much of the basin periphery. [ABSTRACT FROM AUTHOR]

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We offer a critique of Canada's approach to domestic food security with respect to international agreements, justiciability and case law, the breakdown of the public safety net, the institutionalisation of charitable approaches to food insecurity, and the need for 'joined-up' food and nutrition policies. We examined Canada's commitments to the right to food, as well as Canadian policies, case law and social trends, in order to assess Canada's performance with respect to the human right to food. We found that while Canada has been a leader in signing international human rights agreements, including those relating to the right to food, domestic action has lagged and food insecurity increased. We provide recommendations for policy changes that could deal with complex issues of state accountability, social safety nets and vulnerable populations, and joined-up policy frameworks that could help realise the right to adequate food in Canada and other developed nations. [ABSTRACT FROM AUTHOR]

Presents letters from readers of the periodical 'British Dental Journal.' Management of patients with transmissible spongiform encephalopathies; Usefulness of laser technology; Experiences of vocational dental practitioners at interviews for vocational training.

Although ectopic pregnancy diagnosed after elective termination of pregnancy is a very rare event, the incidence is increasing. The risk of mortality among women with ectopic pregnancy undergoing termination of pregnancy is 1.3 times higher than for women with ectopic pregnancy not undergoing a termination of pregnancy. Ovarian pregnancy is one of the rarest forms of ovarian pregnancy, sometimes difficult to diagnose as it can be confused with a tubal ectopic pregnancy or a haemorrhagic ovarian cyst. Early diagnosis of this rare entity is now possible owing to the developments in transvaginal ultrasound and availability of highly specific radioimmunoassay for the human chorionic gonadotrophin. Once the diagnosis has been made and surgical treatment planned, operative laparoscopy is a simple, safe and effective method of treating the majority of cases of ovarian ectopic pregnancy. We report two cases of ovarian ectopic pregnancy diagnosed following surgical termination of first trimester pregnancies and safely managed with operative laparoscopy. Our aim is to highlight the importance of proper ultrasonographic evaluation before termination of pregnancy and that ovarian ectopic pregnancy should be considered in the differential diagnosis of women presenting with abdominal pain after therapeutic termination of pregnancy. [ABSTRACT FROM AUTHOR]

Persistent ectopic pregnancy (PEP) following ipsilateral “salpingectomy” is a rare occurrence. This report describes this uncommon condition in a 26-year-old woman who presented with a sudden onset of right fossa iliac pain following an earlier salpingectomy. At laparoscopy, a persistent ipsilateral EP in the right fallopian tube stump was found. At the initial laparoscopy, an endoloop was used for salpingectomy, and a tubal stump of about 4 cm was left. This poses the questions: Are salpingectomies performed with endoloops true salpingectomies or partial salpingectomies? Do women managed with endoloops need to have human chorionic gonadotropin (hCG) follow-up, as do those with salpingostomy? [ABSTRACT FROM AUTHOR]

Ectopic pregnancy situated in a caesarean section scar is a rare but potentially life-threatening event. Because of its rarity there are no universal guidelines to manage this condition. We report a case of laparoscopic management of an ectopic pregnancy in a previous caesarean section scar. Laparoscopy enabled the successful treatment of an ectopic pregnancy, avoided unnecessary laparotomy and made it possible to preserve the patient’s reproductive capability. We discuss the management options and review the literature. [ABSTRACT FROM AUTHOR]

A 28-year old woman with one previous pregnancy termination presented with delayed menstrual periods for about 7 weeks, left-sided lower abdominal pain, mild vaginal bleeding and vomiting. A transvaginal scan revealed an intrauterine pregnancy of 6 weeks’ gestation with fetal heart activity and a suspected cervical ectopic pregnancy. She requested termination of the pregnancy. Suction evacuation of the cervical ectopic pregnancy followed by cervical dilatation and suction evacuation of the intrauterine pregnancy was performed with ultrasound scan guidance. Cervical haemostatic sutures were inserted prior to suction evacuation and estimated blood loss was 200 ml. Separate tissue specimens from the two pregnancy sites confirmed pregnancy tissue on histology. [ABSTRACT FROM AUTHOR]