Numerical results for the attenuation constant obtained by using the generalized telegraphist’s equations (GTEs) based electromagnetic analysis method and comparison with the HFSS (High Frequency ...Structure Simulator) results are reported. To calculate the attenuation constant with the GTEs method, not only the amplitudes of the voltage modes but also the amplitudes of the current modes must be found. In this paper, it is demonstrated that the relationships reported by other authors for the amplitudes of the current modes are not correct and new ones are proposed. To validate these relationships, the attenuation constants for homogeneous and different partially dielectric-filled rectangular waveguides are computed for the fundamental propagation mode by using the GTEs based analysis method and the results are compared with those obtained with HFSS. It is shown that using the revised relationships for the amplitudes of the current modes, the GTE method can be used to compute accurately the propagation and attenuation constant, but only for propagation modes in which the components of the electric field are not oriented perpendicular to the interface between different dielectrics. This limitation is not due to the proposed current mode relationships, but is due to the GTE method which cannot highlight the electric field discontinuities.
A module of the ATLAS electromagnetic barrel liquid argon calorimeter was exposed to the CERN electron test-beam at the H8 beam line upgraded for precision momentum measurement. The available ...energies of the electron beam ranged from 10 to 245
GeV. The electron beam impinged at one point corresponding to a pseudo-rapidity of
η
=
0.687
and an azimuthal angle of
φ
=
0.28
in the ATLAS coordinate system. A detailed study of several effects biasing the electron energy measurement allowed an energy reconstruction procedure to be developed that ensures a good linearity and a good resolution. Use is made of detailed Monte Carlo simulations based on GEANT4 which describe the longitudinal and transverse shower profiles as well as the energy distributions. For electron energies between 15 and 180
GeV the deviation of the measured incident electron energy over the beam energy is within 0.1%. The systematic uncertainty of the measurement is about 0.1% at low energies and negligible at high energies. The energy resolution is found to be about 10%
·
E
for the sampling term and about 0.2% for the local constant term.
A solitary primary hydatid cyst in the abdominal wall is an exceptional entity, even in countries where the Echinococcus infection has a high rate, being considered an endemic disease.
We report a ...case of a 70-year-old Caucasian man who presented to our clinic with a slow-growing painless parietal mass in the abdominal wall, right flank area. The diagnosis of cystic mass was established at the ultrasound exam. There were no findings that could describe a hydatic cyst. The punction at the surgical intervention revealed a "clear, stone liquid like"; due to the high risk of major injury of the abdominal wall, we performed partial resection of the outer cystic wall, proligerous membrane removal and drainage. The patient had an uneventful post-operative recovery. The histopathology confirmed the suspected diagnosis.
Hydatid cyst should be considered in the differential diagnosis of every abdominal intraparietal cystic mass, especially in regions where the disease is endemic. The best treatment is the total excision of the cyst preserving an intact wall (complete cystectomy). Otherwise, removing the proligerous membrane with partial pericyst's resection (partial pericystectomy) and drainage should be considered.
Cystic echinococcosis is parasitic disease due to the larval stage of the metacestode Echinococcus granulosus in the liver (80%), lungs, kidneys, spleen, myocardium etc. Humans are accidental ...intermediate hosts. Diagnosis is based on laboratory and imaging studies. Treatment is multimodal, surgical and medical. Risks for dangerous complications and relapses are quite common. Adequate follow-up is needed. Albendazole has a central role in the medical therapy of the disease.
recently, insulin-dependent diabetes mellitus, can be treated by pancreatic islet allotransplantation.
This retrospective study involves 137 patients from the Surgery Department of Colentina Clinical ...Hospital, Bucharest, in the July 2000 - July 2008 period, who underwent pancreatic resections, the number of patients who developed pancreatogenic diabetes and their selection for the pancreatic islet transplantation.
After pancreatectomy, 70 patients are diagnosed with diabetes, and 42 with prediabetic stages (IFG and IGT). 61 of these had average glycemic excursions (MAGE) over the normal, and 31 of the 70 patients diagnosed with diabetes, presented hypoglycemic episodes during treatment.
The present criteria of patient selection for pancreatic islets transplantation are limited and can be applied to a small number of patients.
The ability to tailor biologic therapy based on the status of tumor biomarkers and monoclonal antibodies has become very important in the last years. The role of tumor biomarkers in treating ...colorectal cancer, specifically the K-RAS gene, was identified. K-RAS had a higher interest after Lievre and colleagues reported at the 2008 American Society of Clinical Oncology (ASCO) meeting, their analysis of K-RAS mutations in tumors from patients who did not appear to benefit from cetuximab therapy, providing additional data involving K-RAS mutant tumors and their lack of response to cetuximab, as part of first-line therapy for metastatic colorectal cancer. Furthermore, other trials evaluated the K-RAS status and the first-line treatment of metastatic colorectal cancer, the treatment of refractory metastatic cancer and dual-antibody therapy in the first-line treatment of colorectal cancer. Patients with mutant K-RAS colorectal tumors have no benefit from cetuximab, no matter the type of chemotherapy regimen.
Most patients with colon cancer are surgically treated, with postoperative association of chemotherapy and possibly immunotherapy in advanced cases. Surgical treatment is chosen depending on the ...evolution stage, tumor topography and the existence of complications, colonic surgery being dictated by colonic vascularization. The radical character of the surgical intervention can be assured only in the early stages of the tumor. Colostomy is rarely necessary in patients with colon cancer. In the period of the last 5 years (2007-2011), 307 patients with colon cancer were operated in "Colentina" Surgical Clinic, radical intervention being possible only in 219 cases. 48 cases were emergency interventions for occlusion or perforation with peritonitis. Every time the mechanical preparation of the bowel was not possible, the intraoperative washout technique was used. Postoperative complications were met in 27 cases, being represented by bleeding (3 cases), peritoneal abscess (5 cases), anastomotic fistula (7 cases), abdominal wound infection (12 cases). In 5 cases the operation was done laparoscopically. Preoperative mortality was of 13 cases. Postoperative chemotherapy was done in the great majority of cases.
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