Low computational cost method to calculate the hosting capacity in radial low voltage networks

This study presents a low computational cost method to compute the hosting capacity of each user in a radial single phase power network. It is assumed every user install generation. The method is based on two key points, one is the Thevenin equivalent for the installation of each user and for the whole system, the other is the representation of the operation region through the contour of the regions for the Thevenin circuits parameters. The method calculates the range of power injection allowed for each user in order to comply with the network and devices constraints. This range can be included in optimization problems to define the feasible operation region avoiding the explicit inclusion of the power flow equations. The method is illustrated on a simple case study with three users.Ministerior de Economía y Competitividad. Proyecto ENE2016-80638-R Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech

Producción científica internacional en cirugía digestiva laparoscópica

Objetivo: obtener datos sobre la investigación en cirugía digestiva laparoscópica, en los años 1991 a 1996. Material y métodos: usamos Medline y Science Citation Index para obtener los datos generales de producción; para los datos específicos (contenidos, etc.) utilizamos muestras aleatorias con nivel de confianza del 99%. Resultados: hay 4.825 publicaciones de cirugía digestiva laparoscópica y 4.085 de otras especialidades; son artículos el 85%, editoriales y cartas el 15%. Los hospitales universitarios publican un 40%. Los países productores son EE.UU. (45%), Francia (8,2%), Reino Unido (7,9%) y Alemania (7,5%). Los pa- íses editores son EE.UU. (41%), Alemania (15,3%), Reino Unido (9,7%) y Francia (6,7%). La mayor influencia la logra el N e w England Journal of Medicine, consiguiendo un factor de impacto total de 589; British Journal of Surgery 436, A r c h i v e s of Surgery 343, American Journal of Surgery 336 y A n n a l s of Surgery 302; el impacto medio relativo es de 1.886. Metodológicamente hay 756 estudios retrospectivos, 275 prospectivos y 43 ensayos clínicos aleatorizados; el resto no son series. Los contenidos mayoritarios son sobre técnicas e instrumental e indicaciones y reflexiones en general. La región anatómica más investigada es la vesícula biliar, seguida de las vías biliares y colon. Las diferencias tienen “z” > 1,645, es decir, p <0,05, por lo que son estadísticamente significativas. Conclusiones: la mayor producción y edición la realiza EE.UU. y la mayor influencia la consigue el New England. Son escasos los estudios metodológicamente importantes, siendo los ensayos clínicos aleatorizados sólo un 1%

Small bowel obstruction due to laparoscopic barbed sutures: An unknown complication?

Background: In recent years there has been an increasing uptake in the use of barbed sutures, particularly in minimally invasive and laparoscopic procedures where they may reduce operating time and improve surgical efficiency. However, little is known about the adverse events associated with these new materials and concerns have arisen regarding their safety in certain procedures. Methods: We performed a search of electronic databases (PubMed, EMBASE, and Cochrane Database). We reveal up to 15 cases of small bowel obstruction (SBO) complicating laparoscopic pelvic surgery that have been reported to date adding two cases of SBO in our own practice following the use of barbed sutures in laparoscopic operations, both requiring surgical re-intervention in the early post-operative period. Results: Fifteen similar cases of small bowel obstruction were identified, all of which occurred in patients undergoing surgery below the transverse colon. Surgical re-intervention was required in all cases although 60% of these were performed laparoscopically. Conclusions: These cases highlight that although barbed sutures provide an attractive means to allow easier and faster laparoscopic suturing, they should be used carefully in inframesocolic surgery and the suture end cut and buried to avoid inadvertent attachment to the small bowel or its mesentery. Barbed suture entanglement should be considered as an uncommon yet potentially serious differential cause for SBO presenting in the early period after laparoscopic surgery where a barbed suture has been used

Heterogeneous Photocatalytic Degradation of Ibuprofen Over TiO2–Ag Supported on Activated Carbon from Waste Tire Rubber

In recent years it has been discovered that some common use medicines, such as ibuprofen and other nonsteroidal anti-inflammatory drugs, are found in water sources in concentrations that have the potential to affect aquatic organisms. On the other hand, waste used tires are a massive problem for the environment due to the leaching of toxic compounds to soils and water. Also, the exposition to environmental conditions can make them sources of vectors like mosquitoes. In this work, three activated carbon (AC) catalysts derived from waste tire rubber, titanium dioxide and silver were synthesized using the sol–gel method. Morphological characterizations such as SEM and TEM were performed in which, the agglomeration of titanium particles and silver crystals on the surface of the AC is evident. In the XRD analysis, the presence of elemental silver nanoparticles was detected. In the diffuse reflectance spectroscopy analysis, the decrease in the titanium band gap, as well as activity in the visible spectrum, was observed. The photocatalytic tests were performed at pH 3 and 7 in the presence of UV/Vis radiation. These tests show that there are differences between the catalyst in both, UV and visible regions. Adsorption is a major phenomenon for the removal of ibuprofen, followed by photolytic decomposition. In visible spectra, the catalysts show a good performance for the removal of ibuprofen

Laparoscopic vs. Open Approach in Emergent Inguinal Hernia: Our Experience and Review of Literature

There is currently no consensus or homogeneous recommendation about the role of the laparoscopic approach in emergent inguinal hernia surgery. The aim of this manuscript is showing our experience and results of laparoscopic approach for emergent groin hernia repair comparing with open approach. A retrospective review of a prospectively maintained database between January 2011 and December 2021 of acute incarcerated groin hernia that were operated at Virgen del Rocio University Hospital. In this period, they were identified 463 patients with groin hernia that required an emergency repair. 454 patients underwent open surgery (group 1) and 36 patients underwent laparoscopic approach (TAPP procedure) (group 2). Median length stay was 1 day in lap group and 2 days in open approach. Reintervention was necessary in 20 cases (4.40%) from group 1 and one (2.27%) from group 2. In laparoscopic approach, no mortality was described but in open approach, 10 patients (2.20%) died. Globally, 58 cases (12.77%) from group 1 and six patients (16.66%) from group 2 presented any complication. Wound infection was higher in group of open repairs (5.94% vs. 2.77%). Non-surgical complications were higher in open approach (19 vs. 0). There is no statistical significance in any of these items. Laparoscopic approach is a safe, feasible and effective therapeutic option for the treatment of incarcerated groin hernia that require emergency surgery, but prospective and randomized comparative studies are needed to establish the best approach

HIV and HCV screening by non-infectious diseases physicians: can we improve testing and hidden infection rates?

BackgroundMissed opportunities for Human Immunodeficiency Virus (HIV) and Hepatitis C Virus (HCV) testing remain high. We aimed to ascertain the knowledge of screening guidelines and attitudes of non-infectious disease (ID) hospital physicians and assess the impact of a 1-h session on screening rates and diagnoses.MethodsThis interventional study consisted of a 1-h training session on HIV and HCV epidemiology and testing guidelines for non-ID physicians. Pre-and post-session questionnaires compared the knowledge of the guidelines and attitudes toward screening before and after the session. Rates of screening and diagnoses were compared in three 6 months periods: before, immediately after, and 24 months ±4 after the session.ResultsA total of 345 physicians from 31 departments participated in these sessions. Before the session, 19.9% (28% medical, 8% surgical) and 17.9% (30% medical, 2.7% surgical) were aware of HIV and HCV testing guidelines, respectively. The willingness to routinely test increased from 5.6 to 22%, whereas not ordering tests decreased from 34.1 to 2.4%. HIV screening rates significantly increased by 20% after the session (7.7 vs. 9.3 tests per 103 patients; p &lt; 0.001), and the effect persisted until the long-term period. The HIV diagnosis rate increased globally (3.6 vs. 5.2 HIV diagnoses per 105 patients; p = 0.157), mainly because of medical services (4.7 vs. 7.7 per 105 patients; p = 0.082). The HCV screening rate increased significantly immediately and in the long term only in medical services (15.7 and 13.6%, respectively). The new active HCV infection rates increased immediately and declined steeply thereafter.ConclusionA short session for non-ID physicians can improve HIV/HCV screening, increase diagnosis, and contribute to disease elimination

Prolonged survival of patients with angioimmunoblastic T-cell lymphoma after high-dose chemotherapy and autologous stem cell transplantation: the GELTAMO experience

Abstract OBJECTIVES: Angioimmunoblastic T-cell lymphoma (AIL) is a rare lymphoma with a poor prognosis and no standard treatment. Here, we report our experiences with 19 patients treated with high-dose chemotherapy and autologous stem cell transplantation (HDC/ASCT) within the GELTAMO co-operative group between 1992 and 2004. METHODS: The median age at transplantation was 46 yr. Fifteen patients underwent the procedure as front-line therapy and four patients as salvage therapy. Most patients received peripheral stem cells (90%) coupled with BEAM or BEAC as conditioning regimen (79%). RESULTS: A 79% of patients achieved complete response, 5% partial response and 16% failed the procedure. After a median follow-up of 25 months, eight patients died (seven of progressive disease and secondary neoplasia), while actuarial overall survival and progression-free survival at 3 yr was 60% and 55%. Prognostic factors associated with a poor outcome included bone marrow involvement, transplantation in refractory disease state, attributing more than one factor of the age-adjusted-International Prognostic Index, Pretransplant peripheral T-cell lymphoma (PTCL) Score or Prognostic Index for PTCL. CONCLUSIONS: More than half of the patients with AIL that display unfavourable prognostic factors at diagnosis or relapse would be expected to be alive and disease-free after 3 yr when treated with HDC/ASCT. Patients who are transplanted in a refractory disease state do not benefit from this procedure

Inteligencia artificial: herramienta idónea para la conciliación inteligente, un asunto de celeridad procesal

Se tiene como objetivo demostrar la necesidad de asegurar la concurrencia de la inteligencia artificial en el derecho, en los Mecanismos Alternativos de Solución de Conflictos y, en especial, en la conciliación. Además, se demuestra cómo confluyen para generar soluciones a la congestión judicial y maximizando la aplicación del principio de acceso a la justicia, como también la necesidad de transmutar e incorporar una herramienta indispensable que coadyuve al cumplimiento de los fines esenciales del Estado

Diseño, creación y difusión de Objetos de Aprendizaje para el desarrollo de la competencia informacional

Memoria ID-0277. Ayudas de la Universidad de Salamanca para la innovación docente, curso 2014-2015