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Accurate Electronic, Transport, and Bulk Properties of Zinc Blende Gallium Arsenide (Zb-GaAs)

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Journal of Modern Physics 2017年第4期8卷 531-546页

作者： yacouba issa diakite Sibiri D. Traore Yuriy Malozovsky Bethuel Khamala Lashounda Franklin Diola Bagayoko Departement of Studies and Research (DSR) in Physics College of Science and Technology (CST) University of Science Techniques and Technologies of Bamako (USTTB) Bamako Mali Department of Mathematics Physics and Science and Mathematics Education (MP-SMED) Southern University and A & M College in Baton Rouge (SUBR) Baton Rouge LA USA Department of Computational Sciences University of Texas at El Paso (UTEP) El Paso TX USA

We report accurate, calculated electronic, transport, and bulk properties of zinc blende gallium arsenide (GaAs). Our ab-initio, non-relativistic, self-con-sistent calculations employed a local density approximation (LDA) potential and the linear combination of atomic orbital (LCAO) formalism. We strictly followed the Bagayoko, Zhao, and William (BZW) method, as enhanced by Ekuma and Franklin (BZW-EF). Our calculated, direct band gap of 1.429 eV, at an experimental lattice constant of 5.65325 Å, is in excellent agreement with the experimental values. The calculated, total density of states data reproduced several experimentally determined peaks. We have predicted an equilibrium lattice constant, a bulk modulus, and a low temperature band gap of 5.632 Å, 75.49 GPa, and 1.520 eV, respectively. The latter two are in excellent agreement with corresponding, experimental values of 75.5 GPa (74.7 GPa) and 1.519 eV, respectively. This work underscores the capability of the local density approximation (LDA) to describe and to predict accurately properties of semiconductors, provided the calculations adhere to the conditions of validity of DFT.

关键词： Density Functional Theory BZW-EF Method Electronic Properties Band Gap Predictions Gallium Arsenide

Urgent Surgical Management of Acute Lower Gastrointestinal Bleeding with Intraoperative Colonoscopy: A Case Report

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Surgical Science 2018年第9期9卷 300-305页

作者： Traore Amadou Konate Madiassa Diarra Abdoulaye Keita Soumaila Kone Tani Karembe Boubacar Amadou issa Sidibe Boubacar Bah Amadou Maiga Amadou diakite Ibrahim Dembele Bakary Tientigui Traore Alhassane Togo Adegne Kante Lassana Samake Moussa Mangane Moustaphaissa Diop Thierno Madane diakite Adama Diallo Gangaly Gabriel Toure University Hospital Bamako Mali

Lower gastrointestinal bleeding (LGIB) is defined as bleeding from a source distal to the Ligament of Treitz. The primary step is to identify severe hemorrhages that may be life-threatening for patients (10% of cases of LGIB). The management depends on the severity of the bleeding, the diagnostic and therapeutic means of the patient’s reception center. Patient with acute LGIB, in case of negativity of endoscopic and radiological examinations, can be a surgical indication with possibility of intraoperative colonoscopy. We report a case of urgent surgical management with intraoperative colonoscopy in a patient with severe acute LGIB.

关键词： Lower Gastrointestinal Bleeding Surgery Gabriel Toure

Liver Abscesses: What Diagnostics and Therapeutics in the Kati Reference Health Center (Mali)?

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Surgical Science 2018年第9期9卷 344-350页

作者： Abdoulaye Diarra Koniba Keita Amadou Traore Assitan Koné Madiassa Konate Idrissa Tounkara Mamadou A. Keita issa Traore Modibo Togola Fadima K. Tall Daouda Diallo Moustaph issa Magane Deborah Sanra Sanogo Aboubacar Koné Ibrahim diakite Alhassane Traore Adégné Togo General Surgery Department Kati Mali Anesthesia Service and Resuscitation Department Kati Mali Gastroenterology Department Kati Mali

The objectives were to determine the frequency of hepatic abscess, and to describe the clinical and para-clinical aspects and the therapeutic modalities. Method and material: This is a prospective study covering 24 months (January 2016-December 2017). Results: This was a prospective study of 30 cases of liver abscess, ranging from January 2016 to December 2017, a period of 12 months. Inclusion criteria: What were included in this study were all patients hospitalized and treated for liver abscess. Criteria for non-inclusion: Abscess cases have not been treated in the service. The sex ratio was 2.3 and the average age was 35 years old. The main clinical signs were: fever (56.7%), hepatitis (73.3%) and hepatomegaly (26.7%). Hepatic collections objected to abdominal ultrasonography were localized in the right lobe in 70%. Surgical treatment was performed in 10% of cases. Medical treatment alone was performed in the majority of cases (56.7%);eclocated puncture was required in 10 cases (33.3%). The follow-up was simple in all our patients and we did not register deaths;the average duration of treatment was 5 days. Conclusion: Topical pathology in surgical practice in our country, liver abscess is common in our department;medical treatment is curative in the absence of complications.

关键词： Abscess Liver Mali

Abdominoperineal Resection in Rectal Cancer in General Surgery Department at Gabriel Toure University Hospital

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Surgical Science 2019年第1期10卷 16-23页

作者： Amadou Traore Abdoulaye Diarra Madiassa Konate Souleymane Thiam Soumaila Keita Tani Kone Boubacar Karembe Assitan Kone Boubacar Sidibe Amadou Bah Amadou Maiga Ibrahim diakite Bakary Tientigui Dembele Alhassane Traore Adegne Togo Lassana Kante Moussa Samake Moustapha issa Mangane Thierno Madane Diop Mamadou Salia Diarra Adama diakite Gangaly Diallo Gabriel Toure University Hospital BamakoMali

The objectives: Were to determine the hospital frequency of abdominoperineal resection (APR);to determine mortality and morbidity rates and to assess oncologic outcomes. Method and patients: We performed a retrospective study between 2008 and 2013 in general surgery department at Gabriel Toure University Hospital (UH) which included all patients admitted for rectal cancer confirmed by pathological examination, and having undergone an APR. Results: We have collected 17 cases which accounted for 65.38% of curative resections of rectal cancer. The sex-ratio was 0.89 and the averageage was 49.53 years. The average tumor distance from the anal verge was 4.59 ± 1.7 cm. All patients had adenocarcinoma of the rectum. The histopathologic grade was well in 7 cases, moderate and poor in 5 cases each. According to the pathologic TNM classification, 13 patients were classified T4, 14 patients N+. APR was associated with hysterectomy and partial colpectomy in 4 cases. The average duration of interventions was 202.06 ± 25.68 minutes. The average duration of hospitalization was 18.24 ± 04.89 days. The postoperative mortality and morbidity rates were 5.88% and 29.42%, respectively. Local recurrence was observed in 6 patients and liver metastasis in 2 patients. The overall survival rate was 37.5% at 2 years and 18.75% at 5 years. Conclusion: APR still occupies an important place in our practice. Our results could be improved by the recent introduction of neoadjuvant radio chemotherapy in Mali.

关键词： Abdominoperineal Cancer Mali Rectum Resection Surgery

Torsion of Ovarian Tumor in the Elderly: About a Case

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Surgical Science 2020年第4期11卷 69-73页

作者： Amadou Bah Ibrahima diakite Amadou Maiga Boubacar Yoro Sidibe Madiassa Konaté Zakari Saye Boureima Kelly Tany Koné Siaka Konate Arouna A. Doumbia Bathio Traore Boubacar Karembe Mohamed Lamine diakite Amadou A. Traoré Abdoulaye Diarra Moustapha issa Mangane Abdoul Hamidou Almeimoune Bakary T. Dembélé Alhassane Traoré Lassana Kanté Adégné Pierre Togo General Surgery Department University Hospital of Gabriel Touré Bamako Mali Anesthesia and Reanimation Department University Hospital of Gabriel Touré Bamako Mali

We report a case of torsion of an ovarian tumor in a 68-year-old woman with no medical and surgical history. The diagnosis was made in front of an intermittently painful pelvic mass. The treatment consisted of a left annexectomy;the anatomopathological examination revealed a fibro-inflammatory and hemorrhagic cyst. Postoperative results were simple with a 12-month follow-up.

关键词： Tumor Ovary Cyst Surgery

Appendicular Abscess in the Service of General Surgery at the Teaching Hospital Gabriel Toure, Bamako, Mali

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Surgical Science 2018年第8期9卷 281-285页

作者： Madiassa Konate Traore Amadou Coulibaly Yacaria Dembele Bakary Tiéntigui Karembe Boubacar Keita Soumaila Amadou issa Mangane Moustaphissa Diop Thierno Madani Almeimoune Abdoul Hamidou Togo Adégné Pierre Kante Lassana Traore Alhassane Maiga Amadou Bah Amadou Sidibe Boubacaryoro Diamoutene Kolo Tolo Maimouna Samake Moussa Mounimezié Diarra diakite Ibrahim Diallo Gangaly FMOS Bamako Mali

Objectives: To determine hospital frequency and to write the diagnostic and therapeutic aspects of appendicular abscess in adults in the General Surgery Department of teaching Hospital Gabriel Touré from 2005 to 2017. Material and Methods: This was a retrospective study conducted from January 1, 2005 to December 31, 2017 in the General Surgery De-partment of Gabriel Touré University Hospital in all patients with appen-dicular abscess. Results: In 13 years, 1420 cases of acute appendicitis have been reported, including 105 cases of appendicular abscess (7.4%). Mean age of the patients was 32 years with extremes of 16 years and 70 years. Abdominal pain and fever were present in all patients. Pain sat in the right iliac fossa in 73.3% and was epigastric in 11.4%. In almost all cases abdominal defense was present (97.1%). There was generalized abdominal contracture in 2.8% of cases. Average duration of evolution was 27 days with extremes of 1 day and 60 days. Ultrasonography was performed in 42.6% of cases and found peri-appendicular effusion in 29 cases (27.6%). 90 incisions were made by incision of Mac Burney, 8 by median umbilical, 7 by midline above and below umbilical. The amount of fluid aspirated was greater than 100 cc in 47 patients. We performed an appendectomy with appendicular stump burying followed by washing plus drainage of the abdominal cavity in 65 patients. Morbidity rate was 14.3%. No deaths were recorded. Average duration of hospitalization was 6.5 days with extremes of 2 days and 26 days.

关键词： Appendicular Abscess Adult Appendectomy Mali

Duodenal Duplication of Unusual Discovery:Case Report Chambery Hospital French

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Surgical Science 2018年第7期9卷 222-226页

作者： Konate Madiassa Traore Amadou Dembele Bakary Tientigui Karembe Boubacar Amadou issa Mangane Moustaphissa Diop Thierno Madani Togo Adegnepierre Kante Lassana Traore Alhassane Bah Amadou Sidibe Boubacaryoro Diamoutene Kolo Samake Moussa Mounimezie Diarra diakite Ibrahim Coulibaly Yacaria Keita Soumaila Legros Jean Remy Mattia Stella Demane Sofia Al Naasan Irchid Diallo Gangaly Faculty of Medicine and Odonto-Stomatology BamakoMali

We report the case of a 33-year-old man having presented the episodes of abdominal pains since a few months in 2014. He was handled by the anal-gesic and the anti spasmodic by his regular doctor. Symptoms in started up again with renewed vigor in February, 2015. The physical examination was normal. The complementary examinations must be known by the ultrasound the scanner and the magnetic resonance imaging which were in favour of a mass under person suffering from a liver complaint the normal blood balance assessment. The patient was exclusively operated by the way of coelioscopy and the anatomopathology examination of the operating room ended has a duplication duodenal. The operating consequences were simple until one year.

关键词： Duplication Duodenal Hospital Chambéry French