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Management of a Complex Portfolio of Assets with Stochastic Drifts and Volatilities

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Open Journal of Statistics 2022年第6期12卷 827-838页

作者： Wendkouni Yaméogo korotimi Ouédraogo Diakarya Barro LANIBIO Université Joseph KI-ZERBO Ouagadougou Burkina Faso Université Thomas SANKARA Ouagadougou Burkina Faso

In financial analysis risk quantification is essential for efficient portfolio management in a stochastic framework. In this paper we study the value at risk, the expected shortfall, marginal expected shortfall and value at risk, incremental value at risk and expected shortfall, the marginal and discrete marginal contributions of a portfolio. Each asset in the portfolio is characterized by a trend, a volatility and a price following a three-dimensional diffusion process. The interest rate of each asset evolves according to the Hull and White model. Furthermore, we propose the optimization of this portfolio according to the value at risk model.

关键词： Value at Risk Expected Shortfall Stochastic Process Interest Rate

Fermentation Effect on the Nutrient and Antinutrient Composition of <i>Senegalia macrostachya</i>and <i>Parkia biglobosa</i>Seeds: A Comparative Study

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Food and Nutrition Sciences 2020年第7期11卷 726-740页

作者： Aimée W. D. B. Guissou Charles Parkouda Coulibaly K. Anaïs Traoré korotimi Edwige Bahanla Oboulbiga Aly Savadogo Département Technologie Alimentaire (DTA) Institut de Recherche en Sciences Appliquées et Technologies (IRSAT) Centre National de la Recherche Scientifique et Technologique (CNRST) Ouagadougou Burkina Faso Laboratoire de Biochimie et d’Immunologie Appliquée Département de Biochimie-Microbiologie Université Joseph Ki-Zerbo Ouagadougou Burkina Faso

This study aimed to evaluate the effect of the fermentation on the nutrient and antinutrient composition of Senegalia macrostachya and Parkia biglobosa seeds. For condiments production, the raw seeds were cleaned, cooked, drained, washed, cooked, drained and fermented. Results show that the pH increased (from 6.09 to 7.76 and from 6.99 to 7.92) from the onset of the fermentation till 48 h during fermentation of <

关键词： Senegalia macrostachya Parkia biglobosa Fermentation Nutrients Phytates

Small Bowel Obstruction Induced by Phytobezoar: A Case Report in Innocent Abdomen and Literature Review

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Surgical Science 2021年第6期12卷 187-195页

作者： Bréhima Traoré Djibril Traoré Modibo Coulibaly Oumar Guindo Abdoulaye Traoré Fodé Mory Keita Kiffery Ibrahim Keita korotimi Mallé Pierre Coulibaly Aly Boubacar Diallo Dramane Cissé Dramane Samaké Pierre A. Togo Department of General Surgery H&ocirc pital Sominé DOLO de Mopti Mopti Mali Department of Biomedical Laboratory H&ocirc pital Sominé DOLO de Mopti Mopti Mali Department of Public Health H&ocirc pital Sominé DOLO de Mopti Mopti Mali Department of Anesthesia and Resuscitation H&ocirc pital Sominé DOLO de Mopti Mopti Mali Department of Surgery Polyclique des Armées de Kati Koulikoro Mali Department of Gynecology and Obstetrics H&ocirc pital Sominé DOLO de Mopti Mopti Mali Department of General Surgery H&ocirc pital Régional de Sikasso Sikasso Mali Department of Medicine H&ocirc pital Sominé DOLO de Mopti Mopti Mali Faculty of Medicine and Odonto Stomatology University of Sciences Technics and Technologies de Bamako Bamako Mali

Introduction: Small bowel obstruction (SBO) is defined as a complete and persistent cessation of the transit of materials and gases. It occurs in a segment of the digestive tract located between the pylorus and the colorectal junction. Herein, we report a case of small bowel obstruction (SBO) following excessive consumption of wild grapes with no previous abdomen medical or surgical history. Presentation of case: A 65-year-old male farmer presented with cessation of materials and gas associated with vomiting of food and then bilious. The abdomen was bloated and painful on palpation with a moving, painful mass in the left iliac fossa. The hypothesis of acute occlusion of the colon was retained and confirmed on the X-Ray which showed a dilation of small bowel with air-fluid levels. The diagnostic of acute SBO was retained. We performed urgently a median laparotomy. We found the dilation of the loops from the jejunum to the sigmoid colon with a compact mass at the sigmoid colon of 15 cm in length and 6 cm in diameter. We proceeded to crush the mass that was made up with wild grape seed fecal, and push it back to the rectum. The phytobezoar made up with wild grape seeds was extracted through the anus with the fingers after anal dilation. After extraction of the bezoar, the patient’s complaints completely subsided. Discussion: SBO is a frequent emergency surgical pathology. SBO induced by phytobezoar often occurs in patients with abdomen surgery history. However, it is particularly rare in virgin abdomen. Conclusion: This case report aims to raise awareness of phytobezoar as a cause of SBO in elderly even though without abdomen surgery history.

关键词： Small Bowel Obstruction Phytobezoars Innocent Abdomen

Small Bowel Obstruction: Epidemiological, Clinical and Therapeutic Aspects in the General Surgery Department of Hôpital SominéDOLO de Mopti

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Surgical Science 2021年第6期12卷 196-203页

作者： Bréhima Traoré Modibo Coulibaly Djibril Traoré Oumar Guindo Fodé Mory Keita Nouhoum Samassekou Abdoulaye Traoré Souleymane Sanogo korotimi Mallé Kiffery Ibrahim Keita Pierre Coulibaly Aly Boubacar Diallo Dramane Cissé Dramane Samaké Lassana Kanté Department of General Surgery H&ocirc pital Sominé DOLO de Mopti Mopti Mali Department of Biomedical Laboratory H&ocirc pital Sominé DOLO de Mopti Mopti Mali Department of Public Health H&ocirc pital Sominé DOLO de Mopti Mopti Mali Department of Surgery Polyclinique des armées Kati Mali Department of Anesthesia-Resuscitation H&ocirc pital Sominé DOLO de Mopti Mopti Mali Department of Medical Imagery CHU Luxembourg Bamako Mali Department of Gynecology-Obstetrics H&ocirc pital Sominé DOLO de Mopti Mopti Mali Department of Surgery H&ocirc pital de Sikasso Sikasso Mali Department of Medicine H&ocirc pital Sominé DOLO de Mopti Mopti Mali Department of General Surgery of CHU du Point-G Bamako Mali

Small bowel obstruction (SBO) is defined as a complete and persistent cessation of the transit of materials and gases. It occurs in a segment of the digestive tract located between the pylorus and the colorectal junction. We report an observational study which aims to describe the epidemiological, clinical and therapeutic aspects of small bowel obstruction. This study was carried out in the General Surgery Department of Hôpital Sominé DOLO de Mopti from October 1, 2016 to October 1, 2018. A total of 114 patients were recorded for whom the diagnosis was related to an occlusion. The median age was 37 years with extremes ranging from 6 months to 90 years. Male sex was predominant with a sex-ratio of 1.8. The frequency of small bowel occlusions over all occlusions was 74.03%. The most encountered clinical signs were as followed: abdominal pain (100%), vomiting (88.6%), cessation of materials and gas (79.9%) and meteorism (62.3%). All patients underwent medical imaging, the most common of which was an abdomen without preparation X-ray (AWP). On the etiological level, the main causes found postoperatively were: flanges and adhesion (55.2%), strangulated hernias (28.0%), acute intussusception (6.1%), small bowel volvulus (3.5%) and small bowel tumor (1.6%). Releasing the bridles was the most common surgery process (28.0%). The morbidity of the immediate follow-up was (13.1%) and the mortality was (7.0%). This high mortality is due to ignorance of the signs of seriousness and the socio-cultural barrier (decision of the patriarch to agree to a surgical intervention), the late use of hospital facility and the limited financial capability of the patients.

关键词： Occlusions of the Small Intestine Etiology Surgical Treatment Hôpital Sominé DOLO de Mopti

Abdominal Trauma Management: About 62 Cases at the Department of General Surgery of Hôpital SominéDOLO de Mopti, Mali

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Surgical Science 2021年第6期12卷 204-210页

作者： Djibril Traoré Bréhima Traoré Fodé Mory Keita Dramane Cissé Modibo Coulibaly Mory Koné Abdoul Karim Djimdé Kiffery Ibrahim korotimi Mallé Abdoulaye Traoré Oumar Guindo Mathias Diassana Pierre M. Coulibaly Bakary T. Dembélé Pierre A. Togo Department of General Surgery H&ocirc pital Sominé DOLO de Mopti Mopti Mali Department of Surgery Polyclinique des armées Kati Mali Department of Biomedical Laboratory H&ocirc pital Sominé DOLO de Mopti Mopti Mali Department of Anesthesia and Resuscitation H&ocirc pital Sominé DOLO de Mopti Mopti Mali Department of Public Health H&ocirc pital Sominé DOLO de Mopti Mopti Mali Department of Gynecology and Obstetrics H&ocirc pital Sominé DOLO de Mopti Mopti Mali Department of General Surgery CHU Gabriel Touré Bamako Mali

We undertook a prospective and descriptive observational study on abdominal trauma from February 1, 2016 to August 31, 2017. The aim of this work was to identify the typology and management of abdominal trauma cases in our surgery department. Overall, abdominal trauma represented 3.54% (62/1751) of all surgeries during the study period. Among the 62 cases, men accounted for 59 and women for 3. The sex ratio was 19.67. The mean age was 24 ± 15 years. Road accidents were the most represented with 43.5% of cases. The couple of signs, hypovolemic shock and abdominal pain and decrease on blood pressure were the prominent clinical symptoms with 100.0%, and 50.0% of cases, respectively. Abdominal ultrasound and abdominal x-ray without contrast were performed in 67.0% and 18.0% of cases, respectively. Abdominal trauma was divided into two entities: contusion 68% and wounds 32%. Medical treatment was sufficient in 23.00% of cases. Laparotomy as a surgical approach was performed in 77.0% of cases. Local hemostasis plus drainage (27.08%), splenectomy (25.00%), suture (14.58%), hemostasis by tamponade (8.33%) and colostomy (2.08%) were undertaken as surgical procedures when it came to deal with contusions. Debridement of wounds plus suture and hemostasis by tamponade was performed in 18.73% and 4.16 cases, respectively. The most observed lesions were those of the spleen with 27.42% and those of the small bowel with 24.19%. The postoperative follow-up was straightforward in 83.33% of cases. The overall mortality was 4.17%.

关键词： Trauma-Abdomen-Emergency-Hôpital Sominé DOLO de Mopti