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Vanek's tumor of the small bowel in adults

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World Journal of Gastroenterology 2015年第16期21卷 4802-4808页

作者： bassam Abboud Department of General Surgery Hotel Dieu de France HospitalFaculty of MedicineSaint-Joseph University

Inflammatory fibroid polyps(IFPs), or Vanek's tumor, are one of the least common benign small bowel *** affects both sexes and all age groups, with a peak of incidence in the fifth and seventh *** can be found throughout the gastrointestinal tract but most commonly in the gastric antrum or *** underlying cause of IFPs is still *** study of IFP showed mutations in platelet derived growth factor alpha in some *** the time of diagnosis most IFPs have a diameter of 3 to 4 *** lesions have always been recorded as solitary *** depend on the location and the size of the lesion, including abdominal pain, vomiting, altered small bowel movements, gastrointestinal bleeding and loss of *** arising below the Treitz ligament can present with an acute abdomen, usually due to *** computed tomography is currently considered the most sensitive radiological method to show the polyp or to confirm *** inflammatory fibroid polyps can be removed by *** is rarely *** laparoscopy or laparotomy is frequently recommended as the best treatment for intussusceptions caused by *** operation should be performed as early as possible in order to prevent the intussusceptions from leading to ischemia, necrosis and subsequent perforation of the invaginated bowel *** report aims at reviewing the diagnosis, etiology, genetics, clinical presentation, endoscopy, radiology, and best treatment of IFP.

关键词： Small bowel Inflammatory fibroid polyps Abdominal pain Intussusception Computed tomographyscan Surgery

Using Remote Sensing Data to Delineate the Lineaments for Hydrothermal Mineral Prediction in Heqing Area, Northwest Yunnan Province, China

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Journal of China University of Geosciences 2007年第2期18卷 142-147页

作者： Mansour S Al-Mokredi 胡光道 bassam F Al bassam Faculty of Earth Resources China University of Geosciences

Lineament extraction and analysis is one of the routine work in mapping medium and large areas using remote sensing data, most of which are satellite images. Landsat Enhanced Thematic Mapper （ETM） of 945×1 232 pixels subscene acquired on 21 March 2000 covering the northwestern part of Yunnan Province has been digitally processed using ER Mapper software. This article aims to produce lineament density map that predicts favorable zones for hydrothermal mineral occurrences and quantify spatial associations between the known hydrothermal mineral deposits. In the process of lineament extraction a number of image processing techniques were applied. The extracted lineaments were imported into MapGIS software and a suitable grid of 100 m×100 m was chosen. The Kriging method was used to create the lineament density map of the area. The results show that remote sensing data could be useful to extract the lineaments in the area. These lineaments are closely correlated with the faults obtained through other geological investigation methods. On comparing with field data the lineament-density map identifies two important high prospective zones, where large-scale deposits are already existing. In addition the map highlights unrecognized target areas that require follow up investigation.

关键词： lineament extraction hydrothermal mineral prediction Kriging method Heqing area(China)

Treatment options of inflammatory appendiceal masses in adults

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World Journal of Gastroenterology 2013年第25期19卷 3942-3950页

作者： Jenny Tannoury bassam Abboud Department of General Surgery Hotel Dieu de France Hospital Faculty of Medicine SaintJoseph University

At present, the treatment of choice for uncomplicated acute appendicitis in adults continues to be surgical. The inflammation in acute appendicitis may sometimes be enclosed by the patient's own defense mechanisms, by the formation of an inflammatory phlegmon or a circumscribed abscess. The management of these patients is controversial. Immediate appendectomy may be technically demanding. The exploration often ends up in an ileocecal resection or a right-sided hemicolectomy. Recently, the conditions for conservative management of these patients have changed due to the development of computed tomography and ultrasound, which has improved the diagnosis of enclosed inflammation and made drainage of intra-abdominal abscesses easier. New efficient antibiotics have also given new opportunities for nonsurgical treatment of complicated appendicitis. The traditional management of these patients is nonsurgical treatment followed by interval appendectomy to prevent recurrence. The need for interval appendectomy after successful nonsurgical treatment has recently been questioned because the risk of recurrence is relatively small. After successful nonsurgical treatment of an appendiceal mass, the true diagnosis is uncertain in some cases and an underlying diagnosis of cancer or Crohn's disease may be delayed. This report aims at reviewing the treatment options of patients with enclosed appendiceal inflammation, with emphasis on the success rate of nonsurgical treatment, the need for drainage of abscesses, the risk of undetected serious disease, and the need for interval appendectomy to prevent recurrence.

关键词： Appendicitis Phlegmon Abscess Computed tomography Antibiotics Percutaneous drainage Surgery

Occult sporadic insulinoma: Localization and surgical strategy

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World Journal of Gastroenterology 2008年第5期14卷 657-665页

作者： bassam Abboud Joe Boujaoude Department of General Surgery Hotel Dieu de France Hospital Faculty of Medicine Saint-Joseph University Beirut 166830 Lebanon Department of Gastroenterology Hotel Dieu de France Hospital Faculty of Medicine Saint-Joseph University Beirut 166830 Lebanon

Insulinomas continue to pose a diagnostic challenge to physicians, surgeons and radiologists alike. Most are intrapancreatic, benign and solitary. Biochemical diagnosis is obtained and imaging techniques to localize lesions continue to evolve. Surgical resection is the treatment of choice. Despite all efforts, an occult insulinoma (occult insulinoma refers to a biochemically proven tumor with indeterminate anatomical site before operation) may still be encountered. New localization preoperative techniques decreases occult cases and the knowledge of the site of the mass before surgery allows to determine whether enucleation of the tumor or pancreatic resection is likely to be required and whether the tumor is amenable to removal via a laparoscopic approach. In absence of preoperative localization and intraoperative detection of an insulinoma, blind pancreatic resection is not recommended.

关键词： Insulinoma Occult CT scan Endoscopic ultrasonography Surgery Laparoscopy

Improved Geological Interpretation Using Landsat TM Data in Lancang-Jinghong Area, Yunnan Province, China

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Journal of China University of Geosciences 2003年第1期14卷 52-58页

作者： bassam F Al bassam Faculty of Earth Resources China Universityof Geosciences

Landsat TM digital spectral data of Lancang Jinghong area (Yunnan P ro vince) has been used for the purpose of geological interpretation. To meet this object, different image processing techniques including selected band color comp osites, principal component analysis and IHS decorrelation stretching are used t o improve the discrimination of different lithological and structural features i n the *** was found that IHS decorrelation stretching images obtained from t he transformation of false color composite 741 (in red, green and blue) prov ided the best results based on the original *** combining the characteristic s of images produced by different approaches and other canonically transformed i mages with available geological data and surface observations, the geological in terpretation could be done with satisfactory degree of accuracy.

关键词： Landsat TM color composite images principal component analysis (PCA) IHS decorrelation stretching Lancang Jinghong China.

Structural and electrical investigation of BLT films deposited at different times using electron beam evaporation technique

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Optoelectronics Letters 2023年第6期19卷 347-352页

作者： bassam Abdallah Fareza Nasrallah Asmahan Obied Department of Physics Atomic Energy CommissionP.O.Box 6091DamascusSyria

Thin films Bi_(4)Ti_(3)O_(12)(BLT) were deposited using electron beam evaporation on silicon substrate at several times,also on AlN/Si and SiO_(2)/Si *** films morphology and thickness were measured via scanning electron microscopy(SEM).The crystallography was studied using X-ray diffraction(XRD) technique for films which have a(0010) preferred orientation in all substrate *** capacitance values were contingent on frequency value in C-V *** ferroelectric characterization was investigated for BLT film deposited on isolator layer(SiO_(2) or AlN) for Al/Bi_(4)Ti_(3)O_(12)/SiO_(2)/Si *** effect value varied from 1 V to 3 V depending on the thin films isolator on substrate.

关键词： beam films ferroelectric

GIS Predictive Model for Producing Hydrothermal Gold Potential Map Using Weights of Evidence Approach in Gengma Region, Sanjiang District, China

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Journal of China University of Geosciences 2003年第3期14卷 283-292页

作者： bassam F Al bassam Faculty of Earth Resources

Gengma region, Sanjiang district is known to have some large-scale gold deposits. GIS predictive model for hydrothermal gold potential was carried out in this region using weights of evidence modeling technique. Datasets used include large-scale hydrothermal gold deposit records, geological, geophysical and remote sensing imagery. Based on the geological and mineral characteristics of areas with known gold occurrences in Sanjiang, several geological features were thought to be indicative of areas with potential for the occurrence of hydrothermal gold deposits. Indicative features were extracted from geoexploration datasets for use as input in the predictive model. The features include host rock lithology, geologic structures, wallrock alteration and associated (volcanic-plutonic) igneous rocks. To determine which of the indicative geological features are important spatial predictors of area with potential for gold deposits, spatial analysis was done through the modeling method. The input maps were buffered and the optimum distance of spatial association for each geological feature was determined by calculating the contrast and studentized contrast. Five feature maps were converted to binary predictor patterns and used as evidential layers for predictive modeling. The binary patterns were integrated in two combinations, each of which consists of four patterns in order to avoid over prediction due to the effect of duplicate features in the two structural evidences. The two produced potential maps define almost similar favorable zones. Areas of intersections between these zones in the two potential maps placed the highest predictive favorable zones in the region.

关键词： geographic information system weights of evidence mineral resource prediction Sanjiang district

Nuclear design of an integrated small modular reactor based on the APR-1400 for RO desalination purposes

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Nuclear Science and Techniques 2022年第8期33卷 1-15页

作者： Reem Rashed Alnuaimi bassam Khuwaileh Muhammad Zubair Donny Hartanto Department of Mechanical and Nuclear Engineering University of SharjahP.O.BOX 27272SharjahUAE Oak Ridge National Laboratory 1 Bethel Valley RoadOak RidgeTN 37830USA

The United Arab Emirates lacks conventional water resources and relies primarily on desalination plants powered by fossil fuels to produce fresh *** desalination is a proven technology,cost-competitive,and sustainable option capable of integrating the existing largescale desalination plants to produce both freshwater and ***,Small Modular Reactors(SMRs)are promising designs with advanced simplified configurations and inherent safety *** this study,an Integrated Desalination SMR that produces thermal energy compatible with the capacity of a fossil fuel-powered desalination plant in the UAE was ***,the APR-1400 reactor core was used to investigate two 150 MWthconceptual SMR core designs,core A and core B,based on two-dimensional parameters,radius,and ***,the CASMO-4 lattice code was used to generate homogenized few-group constants for optimized fuel assembly loading ***,to find the best core configuration,SIMULATE-3 was used to calculate the core key physics parameters such as power distribution,reactivity coefficients,and critical boron *** addition,different reflector materials were investigated to compensate for the expected high leakage of the small-sized SMR *** pan shape core B model(142.6132 cm diameter,100 cm height,and radially reflected by Stainless Steel)was selected as the best core configuration based on its calculated physics *** B met the design and safety criteria and indicated low total neutron leakage of 11.60%and flat power distribution with 1.50 power peaking *** to core A,it has a more negative MTC value of-6.93 pcm/°F with lower *** a 2-batch scheme,the fuel is discharged at 42.25 GWd/MTU burnup after a long cycle length of 1.58 *** core B model offers the highest specific power of 36.56 kW/kgU while utilizing the smallest heavy metal mass compared with the SMART and NuScale models.

关键词： Nuclear desalination Small modular reactor(SMR) APR-1400 CASMO-4 SIMULATE-3 Two-step method Homogenized cross sections Optimization

Acute mesenteric ischemia after cardio-pulmonary bypass surgery

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World Journal of Gastroenterology 2008年第35期14卷 5361-5370页

作者： bassam Abboud Ronald Daher Joe Boujaoude Department of General Surgery Hotel Dieu de France HospitalFaculty of MedicineSaint-Joseph UniversityBeirut 16-6830Lebanon Department of Gastroenterology Hotel Dieu de France HospitalFaculty of MedicineSaint-Joseph UniversityBeirut 16-6830Lebanon

Acute mesenteric ischemia (AMI) is a highly-lethal surgical emergency. Several pathophysiologic events (arterial obstruction, venous thrombosis and diffuse vasospasm) lead to a sudden decrease in mesenteric blood flow. Ischemia/reperfusion syndrome of the intestine is responsible for systemic abnormalities, leading to multi-organ failure and death. Early diagnosis is difficult because the clinical presentation is subtle, and the biological and radiological diagnostic tools lack sensitivity and specificity. Therapeutic options vary from conservative resuscitation, medical treatment, endovascular techniques and surgical resection and revascularization. A high index of suspicion is required for diagnosis, and prompt treatment is the only hope of reducing the mortality rate. Studies are in progress to provide more accurate diagnostic tools for early diagnosis. AMI can complicate the post-operative course of patients following cardio-pulmonary bypass (CPB). Several factors contribute to the systemic hypo-perfusion state, which is the most frequent pathophysiologic event. In this particular setting, the clinical presentation of AMI can be misleading, while the laboratory and radiological diagnostic tests often produce inconclusive results. The management strategies are controversial, but early treatment is critical for saving lives. Based on the experience of our team, we consider prompt exploratory laparotomy, irrespective of the results of the diagnostic tests, isthe only way to provide objective assessment and adequate treatment, leading to dramatic reduction in the mortality rate.

关键词： Acute mesenteric ischemia Non-occlusive Cardio-pulmonary bypass Laparotomy Prognosis Mortality