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Search Results: 1 - 10 of 545125 matches for " Guillermo L. LOPERA M. "
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OBTENCIóN DE OLEORRESINA DE PIMENTóN (Capsicum annuum L.) EXTRACTION OF OLEORESIN FROM SWEET PEPPER (Capsicum annuum L.)
Jhon A CARDONA. R.,Guillermo L. LOPERA M.,Alejandra M. MONTOYA R.,Ana M. MONTOYA V.
Vitae , 2006,
Abstract: La oleorresina de pimentón (Capsicum annuum L.), la cual contiene fundamentalmente carotenoides, capsaicinoides y algunas vitaminas, tradicionalmente se usa en la industria alimentaria. ésta se obtiene mediante un proceso con las siguientes etapas: a) escaldado, b) troceado, c) secado, d) molienda, y e) extracción con solventes volátiles (hexano, acetona, acetato de etilo). Los pigmentos que se extraen se analizan mediante HPLC en fase reversa y se comparan con la oleorresina de paprika comercial importada por la empresa TECNAS . El rendimiento que se obtiene en el laboratorio está entre el 3 y 6%. Los resultados muestran la importancia del escaldado y del secado: el escaldado permite alcanzar una humedad del 13,56% en 320 min (sin escaldar en el mismo tiempo se llega al 21,01%) y el secado posibilita la extracción con solventes. Oleoresin from sweet pepper (Capsicum annuum L.), which contains mainly carotenoids, capsaicinoids and some vitamins, has been currently used in the food industry. and is obtained with the following procedure: a) scalding, b) chopping, c) drying, d) milling, and e) solvent extraction (hexane, acetone, ethyl acetate). Extracted pigments are analyzed using reverse phase HPLC and the results are compared with the oleoresin obtained from comercial paprika imported by TECNAS . The yield achieved in the laboratory is 3-6%. The results show that scalding and drying are important: the scalding allows to reach an humidity of 13.56% in 320 min (without scalding the humidity reached is 21.01%) and the drying allows extraction with solvents.
OBTENCIóN DE OLEORRESINA DE PIMENTóN (Capsicum annuum L.)
CARDONA. R.,Jhon A; LOPERA M.,Guillermo L.; MONTOYA R.,Alejandra M.; MONTOYA V.,Ana M.; PE?A A.,Juan D.; GIL M.,Manuela; BENAVIDES,Julie F.; R.,María; RíOS,Luis A.; RESTREPO V.,Gloria M.;
Vitae , 2006,
Abstract: oleoresin from sweet pepper (capsicum annuum l.), which contains mainly carotenoids, capsaicinoids and some vitamins, has been currently used in the food industry. and is obtained with the following procedure: a) scalding, b) chopping, c) drying, d) milling, and e) solvent extraction (hexane, acetone, ethyl acetate). extracted pigments are analyzed using reverse phase hplc and the results are compared with the oleoresin obtained from comercial paprika imported by tecnas?. the yield achieved in the laboratory is 3-6%. the results show that scalding and drying are important: the scalding allows to reach an humidity of 13.56% in 320 min (without scalding the humidity reached is 21.01%) and the drying allows extraction with solvents.
Frecuencia de tromboembolismo venoso en pacientes hospitalizados con cáncer. Factores de riesgo y eficacia de la tromboprofilaxis farmacológica
Conte L,Guillermo; Figueroa M,Gastón;
Revista médica de Chile , 2008, DOI: 10.4067/S0034-98872008001200004
Abstract: background: hospitalized patients with cancer have a high risk of venous thromboembolism (vte). aim: to study the frequency of vte and its risk factors in hospitalized patients with cancer. material and methods: retrospective analysis of clinical records of patients with cancer, hospitalized at a university hospital between 2002 and 2004. patients with the diagnosis of vte at admission or using anticoagulants, were excluded from the analysis. results: the medical records of 366 patients were reviewed. fifty three percent had a digestive cáncer, 19% lung cáncer, 10% breast cancer and 18% had a tumor of other origin. in 77%, the tumor was in an advanced stage. the most common admission diagnoses were pneumonía, vomiting and dehydration, gastrointestinal bleeding and urinary infection. in 125 patients (34%) pharmacological thrombo-prophylaxis was not used and 242 (66%) received regular or low molecular weight heparin. vte was detected in 11 patients (3%) and was significantly more common among patients not receiving thrombo prophylaxis compared to those receiving heparin (6.4% and 1.2%, respectively p =0.014). factors associated to vte were a history ofprevious vte with an odds ratio (or) of 12.9 (p <0.01), obesity with an or of 13.3 (p <0.01), recent chemotherapy with an or of 6.9 (p =0.01). the use of pharmacological thromboprophylaxis had an or of 0.24 (p =0.05). conclusions: three percent of patients in this series had vte during the hospitalization. pharmacological thrombo-prophylaxis significantly reduced the risk of vte.
Nuevos registros de insectos (Diptera y Siphonaptera), ectoparásitos de murciélagos (Vespertilionidae) del norte de Uruguay
Guillermo L. Claps,Enrique M. González
Mastozoolog?-a neotropical , 2004,
Abstract: Se dan nuevos registros de insectos ectoparásitos (Diptera: Nycteribiidae: Basiliaandersoni Peterson & Maa y B. plaumanni Scott y Siphonaptera: Ischnopsyllidae: Myodopsyllaisidori (Wyenbergh), para cuatro especies de murciélagos Vespertilionidae: Eptesicus furinalis(d Orbigny), Myotis albescens (Geoffroy), M. levis (Geoffroy) y M. riparius (Handley). Seamplía la distribución conocida de B. plaumanni y se da a conocer su asociación con E.furinalis en Uruguay. Se incrementa la nómina de hospedadores citados para B. andersoni.
Nuevos registros de Streblidae (Diptera) para la Argentina
Guillermo L. Claps,Rubén M. Barquez
Acta zoológica mexicana , 2000,
Abstract:
Frecuencia de tromboembolismo venoso en pacientes hospitalizados con cáncer. Factores de riesgo y eficacia de la tromboprofilaxis farmacológica Frequency of venous thromboembolism among hospitalized patients with cancer
Guillermo Conte L,Gastón Figueroa M
Revista médica de Chile , 2008,
Abstract: Background: Hospitalized patients with cancer have a high risk of venous thromboembolism (VTE). Aim: To study the frequency of VTE and its risk factors in hospitalized patients with cancer. Material and methods: Retrospective analysis of clinical records of patients with cancer, hospitalized at a university hospital between 2002 and 2004. Patients with the diagnosis of VTE at admission or using anticoagulants, were excluded from the analysis. Results: The medical records of 366 patients were reviewed. Fifty three percent had a digestive cáncer, 19% lung cáncer, 10% breast cancer and 18% had a tumor of other origin. In 77%, the tumor was in an advanced stage. The most common admission diagnoses were pneumonía, vomiting and dehydration, gastrointestinal bleeding and urinary infection. In 125 patients (34%) pharmacological thrombo-prophylaxis was not used and 242 (66%) received regular or low molecular weight heparin. VTE was detected in 11 patients (3%) and was significantly more common among patients not receiving thrombo prophylaxis compared to those receiving heparin (6.4% and 1.2%, respectively p =0.014). Factors associated to VTE were a history ofprevious VTE with an odds ratio (OR) of 12.9 (p <0.01), obesity with an OR of 13.3 (p <0.01), recent chemotherapy with an OR of 6.9 (p =0.01). The use of pharmacological thromboprophylaxis had an OR of 0.24 (p =0.05). Conclusions: Three percent of patients in this series had VTE during the hospitalization. Pharmacological thrombo-prophylaxis significantly reduced the risk of VTE.
Diferencias en la resonancia magnética funcional en pacientes con trastorno bipolar usando un paradigma de memoria de trabajo
López-Jaramillo,Carlos; Correa-Palacio,Andrés; Delgado,Jorge; Lopera-Vásquez,Juan; Rascovsky,Simón; Castrillón,Gabriel; Sanz,Alexander; Gil,Catalina; Ramírez,Guillermo; Loaiza,Sergio; Casta?o,Adelaida; Palacio,Carlos Alberto;
Revista Colombiana de Psiquiatría , 2010,
Abstract: background: previous studies with neuropsychological testing have shown deficits in working memory in patients with bipolar disorder (bd). it is not yet clear if there is correlation with functional activation in neuroimaging such as functional magnetic resonance imaging (fmri). objective: to describe a new paradigm of neurocognitive assessment to identify the possible differences in the characteristics of neurofunctional response in patients with bd using a working memory task. method: descriptive, correlational, cross sectional study. we evaluated 12 euthymic patients with bd-i (in treatment with lithium or valproate or without treatment at least 2 months prior to the study) and 4 participants with no psychiatric disorder. fmri was used to correlate their operative memory processes with the changes seen in the bold signal using a paradigm that combines the presentation of blocks and related events. results: control's brain activation was greater during response condition compared with bipolar patients. when comparing between patient groups there was no statistically significant difference (p>0.05). discussion: the paradigm we deployed is useful to study activation in brain areas involved in working memory processes. the results with bipolar patients need to be expanded with larger populations to compare other possible cognitive deficits and medication specific effects.
Literature Review of the Frequency of Reoperations after One Stage Transanal Endorectal Pull-Through Procedure for Hirschsprung’s Disease in Children  [PDF]
Carlos Lopera, Pernilla Stenstr?m, Magnus Anderberg, Einar Arnbj?rnsson
Surgical Science (SS) , 2012, DOI: 10.4236/ss.2012.36058
Abstract: Background: Transanal endorectal one-stage pull-through (TERPT) procedure in children with Hirschsprung’s disease (HD) has gained worldwide acceptance. However surgical success is often reported separately, while the necessity for true reoperation is difficult to establish. Aim: To evaluate the incidence of reoperations following TERPT procedure. The findings will be important in counseling and planning childcare for HD patients as well as providing a benchmark for single centers clinical results. Methods: A literature review of reported TERPT operations on children with HD between 1998 through 2011 was performed. Only planned TERPT operation reports were included. Information was collected with particular emphasis on reoperations and their reasons. Results: Out of 26 published articles 23 were included, reporting on 836 children, female/male ratio: 1/3.3, undergoing the TERPT procedure as the only operative intervention with described postoperative courses. The children comprised neonates, <4 weeks (38%), babies <1 year (35%), toddlers, 1 - 3 years (15%) and children >3 years of age (12%). The average follow up was 18.5 (6 - 38) months. The resected bowel length mean was 20.5 cm. Forty-one reoperations were reported (4.9%), including 24 laparotomies, 8 laparoscopies, 6 colostomies and ileostomies in 3 children. Only 2 re-do TERPT were reported (0.2%). Seven patients were considered TERPT failures (0.8%) with 5 requiring diverting colostomies and additional transabdominal pull-through operations. Two myectomies were performed (0.2%). One child with aganglionosis underwent a Duhamel pull through. Two (0.2%) had serious damage to the urinary tract also one child with a vas deferens lesion was reoperated. Two bowel obstructions required adhesiolysis. Eight anastomotic dehiscences (0.9%) required surgery after reparation. One prolapse of the pulled through colon was reported. Six patients (0.7%) suffered anastomotic leaks. Anastomotic strictures rate was 2.8%, all repaired with anal dilatation. Conclusion: The review supports the low incidence of reported reoperations for the TERPT procedure.
Bloqueo de ganglio estrellado
Restrepo-Garcés,C. E.; Gómez Bermudez,C. M.; Jaramillo Escobar,S.; Jazmín Ramírez,L.; Lopera,L. M.; Vargas,J. F.;
Revista de la Sociedad Espa?ola del Dolor , 2012,
Abstract: stellate ganglion block is a frequent interventional technique on the field of pain medicine. the indications included painful and non-painful pathologies. the original descriptions were based on anatomical landmarks, but the use of fluoroscopy or ultrasound as a guidance, should be the standard approach. in the present article there is a detailed description of the indications and the image guided techniques (fluoroscopy and ultrasound). the manuscript highlight the advantage of the ultrasound visualizing the visceral structures (esophagus), the vascular bed (inferior thyroid vessels, carotid artery) and finally on real time detect the dispersion of the injectate.
Conservation of Brycon orbignyanus natural populations and stocks for their reproductive, genetic, environmental sustainability: A model for species threatened with extinction
Lopera-Barrero,N. M;
Ciencia e investigación agraria , 2009, DOI: 10.4067/S0718-16202009000200004
Abstract: several ecological and climatic factors, especially those related to human activities, have been contributing to the disappearance of natural populations of piracanjuba (brycon orbignyanus). due to the importance of these fish to the ecosystems in which they are located and their qualities of fast growth and ability to adapt to controlled environments, producers have expressed increased interest in recent years in using this species, with particular aims of increasing production, and participation in conservation programs. in this study, strategies for the sustainable management of b. orbignyanus are idealized and discussed, with the goals of perfecting the reproductive, genetic, environmental and sanitary management of this species and suggestions for improving monitoring stocks maintained in captivity and natural populations. these strategies can be used as models for other migratory species threatened with extinction.
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