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Sample records for norwood technique sindrome

  1. Nova técnica: operação de Norwood com perfusão regional cerebral e coronariana New technique: Norwood operation with regional cerebral and coronary perfusion

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    Gláucio Furlanetto

    2009-12-01

    Full Text Available OBJETIVO: Avaliar o resultado imediato da operação de Norwood modificado com nova técnica de perfusão regional cerebral (PRCeA anterógrada associado a perfusão regional coronariana (PRCoR retrógrada em substituição à parada circulatória total com hipotermia profunda em crianças portadoras da Síndrome da Hipoplasia do Coração Esquerdo (SHCE com aorta ascendente extremamente hipoplásica (AH. MÉTODOS: No período de dezembro de 2006 a fevereiro de 2008, a operação de Norwood modificado com tubo entre o ventrículo direito e as artérias pulmonares ou shunt tipo Sano foi realizada em oito crianças portadoras de SHCE e aorta ascendente com diâmetro inferior a 3 mm, (quatro do sexo masculino e quatro do sexo feminino com idade média de 9,2 dias (variando de 1 a 29 dias e peso médio de 3,3 kg (variando de 2,7 a 3,8 kg. Utilizada CEC e hipotermia a 25ºC com duas cânulas venosas e anastomose de um enxerto de politetrafluoretileno com a artéria inominada utilizado como linha arterial e para PRCeA. A PRCoR foi realizada por meio de um desvio na linha arterial e colocação de um cateter na aorta ascendente. Foram analisados o resultado cirúrgico imediato e a presença de alterações neurológicas nesse período. RESULTADOS: O resultado cirúrgico imediato revelou mortalidade de 25% e ausência de comprometimento neurológico ao exame clínico. CONCLUSÃO: A operação de Norwood modificado pode ser realizada com PRCeA e PRCoR em crianças com SHCE e AH com resultado cirúrgico imediato satisfatório e ausência de complicações neurológicas.OBJECTIVE: To assess the immediate result of the modified Norwood procedure with new technique of anterograde regional cerebral perfusion (ARCeP and retrograde regional coronary perfusion (RRCoP in substitution of profound hypothermia and circulatory arrest in children with hypoplastic left heart syndrome (HLHS with extremely hypoplastic ascending aorta (HA. METHODS: In the period of

  2. Syndrome of hypoplasic left ventricle, Description of a clinical case with survival after carrying out of Norwood technique

    International Nuclear Information System (INIS)

    Velasco B, Ana M; Lince V, Rafael; Zapata S, Jorge A and others

    2003-01-01

    A clinical case of a 72 hours newborn patient admitted to the pediatric intensive care unit for reduced cardiac output syndrome showing anuria, metabolic acidosis and respiratory distress, is reported. Mechanical ventilation, inotropic support and continuous prostaglandin e1 infusion were initiated. The echocardiogram showed hypoplasia of the left ventricle. The Norwood procedure stage i under extracorporeal circulation with deep hypothermia and circulatory arrest, was performed at the 6th day of life. During the early postoperative period, the patient developed hypoxaemia and pulmonary hypertension, which improved with controlled hyperventilation and vasodilatation therapy. Other complications were clinical sepsis and abstinence syndrome, which resolved with medical management. The patient was extubated on the sixth postoperative day. Subsequent echocardiograms showed tricuspid valve regurgitation, right ventricular dysfunction with dilation and an organized thrombus in the left atrium. These improved with diuretics, dopamine, milrinone and heparin. The patient was discharged after 32 days of the surgery without signs of congestive heart failure. This case is important, given the high mortality rate of this pathology. The Norwood procedure proved to be a palliative strategy versus the ortotopic cardiac transplant in newborns, because of the difficulty in finding donators at this age and the immunosuppressive therapy complications. This represents a great advance in the Colombian pediatric cardiology because until recent years these patients did not have any other surgical alternative

  3. The Norwood procedure: in favor of the RV-PA conduit.

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    Barron, David J

    2013-01-01

    Evolution of the Norwood procedure has culminated in there currently being three treatment strategies available for initial management: the 'classical' Norwood (utilizing a Blalock-Taussig shunt), the Norwood with right-ventricle to pulmonary artery (RV-PA) conduit, and the 'hybrid' Norwood procedure utilizing bilateral pulmonary artery banding and ductal stenting. Each variant has its potential advantages and disadvantages, and this paper looks to examine the evidence in favor of each strategy, with emphasis on the supportive data for the RV-PA conduit. The 'classical' procedure has the benefit of the greatest accumulated surgical experience and avoids any incision into the ventricle. However, the diastolic run-off of the Blalock-Taussig shunt can cause hemodynamic instability and unpredictable coronary steal phenomenon. The RV-PA conduit has the advantage of maintaining diastolic pressure with a more stable postoperative course, but at the cost of a ventriculotomy that may have detrimental long-term sequelae. The 'hybrid' procedure has the advantage of avoiding cardiopulmonary bypass, but does not always secure coronary blood flow and has a high inter-stage morbidity and reintervention rate. The evidence shows that each technique may have its place in future management, and that treatment algorithms could emerge that direct the choice of procedure for specific patient groups. Copyright © 2013 Elsevier Inc. All rights reserved.

  4. Prevalensi Sindrom Metabolik pada Pekerja Perusahaan

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    Zahtamal Zahtamal

    2014-12-01

    Full Text Available Sindrom metabolik adalah masalah kesehatan yang prevalensinya cenderung meningkat pada pekerja. Penelitian ini bertujuan memaparkan prevalensi kasus sindrom metabolik yang terjadi pada pekerja perusahaan. Penelitian ini dilakukan pada tahun 2014 pada dua perusahaan di Provinsi Riau dengan rancangan potong lintang. Sumber data adalah rekam medis pekerja yang melakukan medical check up periode Oktober 2013 hingga Februari 2014. Populasi adalah pekerja yang menderita sindrom metabolik sebanyak 131 orang. Sampel penelitian dipilih dengan cara total sampling yakni 131 orang. Instrumen adalah kuesioner, international physical activity questionnaire, tabel 24 hours food recall, dan tabel bantu pencatatan komponen sindrom metabolik. Pengelolaan data dilakukan secara kuantitatif menggunakan analisis univariat dan bivariat, dengan uji korelasi Spearman’s Rho dan kai kuadrat. Hasil penelitian mendapatkan prevalensi sindrom metabolik sebanyak 21,58%, dengan jenis kelamin terbanyak adalah laki-laki, kelompok usia terbanyak adalah > 50 tahun. Sebagian besar kasus sindrom metabolik memiliki tiga komponen, dengan komponen terbanyak adalah lingkar perut dan tekanan darah. Sebanyak 23,50% kasus memiliki riwayat keluarga obesitas dan diabetes melitus. Sebagian besar kategori aktivitas adalah sedang. Jenis asupan makanan dengan kategori tidak sesuai dengan diet adalah serat pangan dan lemak jenuh. Variabel lingkar perut berhubungan bermakna secara statistik dengan tekanan darah sistolik dan diastolik serta kadar kolesterol high density lipoprotein (p 50 years. Most cases of metabolic syndrome has three components, with the largest component is the abdominal circumference and blood pressure. A total of 23.50% of cases have a family history of obesity and diabetes mellitus. Most categories of activity is moderate. Most types of food intake in the category “out of dietary guidelines” are dietary fiber and saturated fat. Abdominal circumference variable has a

  5. Perbedaan Sindrom Metabolik Pada Wanita Vegetarian Tipe Vegan Dan Non Vegan

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    Setiyani, Diah Ari; Wirawanni, Yekti

    2012-01-01

    Latar Belakang: Sindrom metabolik adalah kumpulan kelainan metabolik yang dikaitkan dengan peningkatan risiko penyakit kardiovaskular. Diet vegetarian terutama vegan dapat berperan dalam penurunan risiko sindrom metabolik, tetapi masih didapatkan penelitian yang menyatakan bahwa vegan berisiko sindrom metabolik bahkan lebih tinggi daripada non vegan. Penelitian ini bertujuan untuk mengetahui perbedaan sindrom metabolik pada wanita vegetarian vegan dan non vegan. Metode: Penelitian ini dilakuk...

  6. Norwood with right ventricle-to-pulmonary artery conduit is more effective than Norwood with Blalock-Taussig shunt for hypoplastic left heart syndrome: mathematic modeling of hemodynamics.

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    Mroczek, Tomasz; Małota, Zbigniew; Wójcik, Elżbieta; Nawrat, Zbigniew; Skalski, Janusz

    2011-12-01

    The introduction of right ventricle to pulmonary artery (RV-PA) conduit in the Norwood procedure for hypoplastic left heart syndrome resulted in a higher survival rate in many centers. A higher diastolic aortic pressure and a higher mean coronary perfusion pressure were suggested as the hemodynamic advantage of this source of pulmonary blood flow. The main objective of this study was the comparison of two models of Norwood physiology with different types of pulmonary blood flow sources and their hemodynamics. Based on anatomic details obtained from echocardiographic assessment and angiographic studies, two three-dimensional computer models of post-Norwood physiology were developed. The finite-element method was applied for computational hemodynamic simulations. Norwood physiology with RV-PA 5-mm conduit and Blalock-Taussig shunt (BTS) 3.5-mm shunt were compared. Right ventricle work, wall stress, flow velocity, shear rate stress, energy loss and turbulence eddy dissipation were analyzed in both models. The total work of the right ventricle after Norwood procedure with the 5-mm RV-PA conduit was lower in comparison to the 3.5-mm BTS while establishing an identical systemic blood flow. The Qp/Qs ratio was higher in the BTS group. Hemodynamic performance after Norwood with the RV-PA conduit is more effective than after Norwood with BTS. Computer simulations of complicated hemodynamics after the Norwood procedure could be helpful in establishing optimal post-Norwood physiology. Copyright © 2011 European Association for Cardio-Thoracic Surgery. Published by Elsevier B.V. All rights reserved.

  7. ERITEMA NODOSO Y SINDROME FEBRIL PROLONGADO ASOCIADOS A HIPERPARATIROIDISMO SECUNDARIO

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    Enz P

    2005-06-01

    Full Text Available El hiperparatiroidismo secundario es uno de los principales disturbios causados por la insuficiencia renal crónica, y la paratohormona es considerada una de las toxinas del sindrome urémico. El sindrome febril prolongado secundario a hiperparatiroidismo primario ya ha sido descripto en la literatura, aunque no lo ha sido aun el inducido por hiperparatiroidismo secundario. En el presente reporte se presenta un caso de eritema nodoso y sindrome febril prolongado asociado a hiperparatiroidismo secundario y que resolvió luego de efectuada una paratiroidectomía subtotal.

  8. Current outcomes and risk factors for the Norwood procedure.

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    Stasik, Chad N; Gelehrter, S; Goldberg, Caren S; Bove, Edward L; Devaney, Eric J; Ohye, Richard G

    2006-02-01

    Tremendous strides have been made in the outcomes for hypoplastic left heart syndrome and other functional single-ventricle malformations over the past 25 years. This progress relates primarily to improvements in survival for patients undergoing the Norwood procedure. Previous reports on risk factors have been on smaller groups of patients or collected over relatively long periods of time, during which management has evolved. We analyzed our current results for the Norwood procedure with attention to risk factors for poor outcome. A single-institution review of all patients undergoing a Norwood procedure for a single-ventricle malformation from May 1, 2001, through April 30, 2003, was performed. Patient demographics, anatomy, clinical condition, associated anomalies, operative details, and outcomes were recorded. Of the 111 patients, there were 23 (21%) hospital deaths. Univariate analysis revealed noncardiac abnormalities (genetic or significant extracardiac diagnosis, P = .0018), gestational age (P = .03), diagnosis of unbalanced atrioventricular septal defect (P = .017), and weight of less than 2.5 kg (P = .0072) to be related to hospital death. On multivariate analysis, only weight of less than 2.5 kg and noncardiac abnormalities were found to be independent risk factors. Patients with either of these characteristics had a hospital survival of 52% (12/23), whereas those at standard risk had a survival of 86% (76/88). Although improvements in management might have lessened the effect of some of the traditionally reported risk factors related to variations in the cardiovascular anatomy, noncardiac abnormalities and low birth weight remain as a future challenge for the physician caring for the patient with single-ventricle physiology.

  9. Tata Laksana Non Imunosupresan Sindrom Nefrotik pada Anak

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    Sudung Oloan Pardede

    2017-08-01

    Full Text Available Sindrom nefrotik adalah keadaan klinis yang terdiri atas proteinuria masif, hipo­albuminemia (< 2,5 g/dL, edema, dan hiperkolesterolemia. Terapi utama sindrom nefrotik adalah imunosupresan terutama kortikosteroid. Pada sindrom nefrotik relaps sering atau dependen steroid, dan sindrom nefrotik resisten steroid, selain steroid diberikan juga imunosupresan lain seperti siklofosfamid, siklosporin, mikofenolat mofetil, takrolimus, atau pun levamisol. Selain pemberian imunosupresan diperlukan terapi suportif, yang meliputi terapi diitetik,  tata laksana edema, hipertensi, hipovolemia, trombosis, hiperlipidemia, dan infeksi. Tata laksana diitetik terdiri atas kalori yang adekuat, protein sesuai recommended daily allowance, lemak low saturated, dan rendah garam. Komposisi zat gizi yang dianjurkan terdiri atas 10-14% protein; 40-50% lemak poly- dan monounsaturated, 40-50% karbohidrat. Tata laksana  edema terdiri atas restriksi cairan, pemberian diuretik, dan infus albumin jika perlu. Infeksi yang sering terjadi pada sindrom nefrotik adalah selulitis peritonitis, dan pneumonia yang diterapi dengan antibiotik sefotaksim, seftriakson, ko-amoksiklav. Antihipertensi yang digunakan pada anak umumnya diuretik, angiotensin converting enzyme inhibitors, angiotensin receptor blockers, calcium channel blockers, (amblodipin, nifedipin, isradipin, alpha-symphatetic agents, beta blockers dan vasodilator. Aktivitas fisik tidak perlu dibatasi, dan pada edema ringan atau tidak berat tidak perlu dilarang pergi ke sekolah

  10. Hemodynamic Effects of Ventricular Assist Device Implantation on Norwood, Glenn, and Fontan Circulation: A Simulation Study.

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    Di Molfetta, Arianna; Amodeo, Antonio; Gagliardi, Maria G; Trivella, Maria G; Fresiello, Libera; Filippelli, Sergio; Toscano, Alessandra; Ferrari, Gianfranco

    2016-01-01

    The growing population of failing single-ventricle (SV) patients might benefit from ventricular assist device (VAD) support as a bridge to heart transplantation. However, the documented experience is limited to isolated case reports. Considering the complex and different physiopathology of Norwood, Glenn, and Fontan patients and the lack of established experience, the aim of this work is to realize and test a lumped parameter model of the cardiovascular system able to simulate SV hemodynamics and VAD implantation effects to support clinical decision. Hemodynamic and echocardiographic data of 30 SV patients (10 Norwood, 10 Glenn, and 10 Fontan) were retrospectively collected and used to simulate patients' baseline. Then, the effects of VAD implantation were simulated. Simulation results suggest that the implantation of VAD: (i) increases the cardiac output and the mean arterial systemic pressure in all the three palliation conditions (Norwood 77.2 and 19.7%, Glenn 38.6 and 32.2%, and Fontan 17.2 and 14.2%); (ii) decreases the SV external work (Norwood 55%, Glenn 35.6%, and Fontan 41%); (iii) decreases the pressure pulsatility index (Norwood 65.2%, Glenn 81.3%, and Fontan 64.8%); (iv) increases the pulmonary arterial pressure in particular in the Norwood circulation (Norwood 39.7%, Glenn 12.1% and Fontan 3%); and (v) decreases the atrial pressure (Norwood 2%, Glenn 10.6%, and Fontan 8.6%). Finally, the VAD work is lower in the Norwood circulation (30.4 mL·mm Hg) in comparison with Fontan (40.3 mL·mm Hg) and to Glenn (64.5 mL·mm Hg) circulations. The use of VAD in SV physiology could be helpful to bridge patients to heart transplantations by increasing the CO and unloading the SV with a decrement of the atrial pressure and the SV external work. The regulation of the pulmonary flow is challenging because the Pap is increased by the presence of VAD. The hemodynamic changes are different in the different SV palliation step. The use of numerical models

  11. HUBUNGAN ANTARA SINDROM MENOPAUSE DENGAN KUALITAS HIDUP PEREMPUAN MENOPAUSE DI PUSKESMAS SUKAHAJI KABUPATEN MAJALENGKA

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    Ruri Yuni Astari

    2015-01-01

    Full Text Available AbstractMenopause is a natural phase experienced by every woman, a reproduction process characterized by the end of the fertile period of a woman because the ovaries are no longer produce estrogen and progesterone, and may cause menopausal complaints which are referred to as menopausal syndrome. Problems or changes experienced by menopause women may lead to a crisis that will affect the quality of life. This study aims to analyze the correlation between menopausal syndrome and the quality of life. The study method was analytic observational with cross sectional design. The population were women who had experienced menopause for 1-2 years in Sukahaji Majalengka Primary Health Center area and met the study criteria such as were still have a husband, had no menstruation experience for 1-2 years and were able to read. Sampling technique was performed by total sampling, conducted in February until March 2013. Menopausal syndrome was measured by using MSQ (Menopause Symptom Questionnaire and quality of life was measured by using The World Health Organization Quality Of Life questionnaire (WHOQOL - BREF. Data was analyzed with univariate, bivariate and multivariate statistical analysis. The results presented strong negative correlation between physiological and psychological menopausal syndrome aspects in quality of life (r = -0.786, p = 0.000 and r = -0.706, p = 0.000, a negative correlation was simultaneouly strong in physiological and psychological aspects of menopausal syndrome and the quality of life of women (r = -0.772, p = 0.000, a significant correlation between income and education and quality of life (r = -0.313 p = 0.011 and r = -0.359 p = 0.003. Parity was not significantly associated with quality of life of menopause women. Conclusion: menopausal syndrome had impacts on the quality of life of menopause women. Social support, self-confidence and positive attitude towards the complaints of the menopause women to accept menopause as a gift

  12. The Optimal Timing of Stage-2-Palliation After the Norwood Operation.

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    Meza, James M; Hickey, Edward; McCrindle, Brian; Blackstone, Eugene; Anderson, Brett; Overman, David; Kirklin, James K; Karamlou, Tara; Caldarone, Christopher; Kim, Richard; DeCampli, William; Jacobs, Marshall; Guleserian, Kristine; Jacobs, Jeffrey P; Jaquiss, Robert

    2018-01-01

    The effect of the timing of stage-2-palliation (S2P) on survival through single ventricle palliation remains unknown. This study investigated the optimal timing of S2P that minimizes pre-S2P attrition and maximizes post-S2P survival. The Congenital Heart Surgeons' Society's critical left ventricular outflow tract obstruction cohort was used. Survival analysis was performed using multiphase parametric hazard analysis. Separate risk factors for death after the Norwood and after S2P were identified. Based on the multivariable models, infants were stratified as low, intermediate, or high risk. Cumulative 2-year, post-Norwood survival was predicted. Optimal timing was determined using conditional survival analysis and plotted as 2-year, post-Norwood survival versus age at S2P. A Norwood operation was performed in 534 neonates from 21 institutions. The S2P was performed in 71%, at a median age of 5.1 months (IQR: 4.3 to 6.0), and 22% died after Norwood. By 5 years after S2P, 10% of infants had died. For low- and intermediate-risk infants, performing S2P after age 3 months was associated with 89% ± 3% and 82% ± 3% 2-year survival, respectively. Undergoing an interval cardiac reoperation or moderate-severe right ventricular dysfunction before S2P were high-risk features. Among high-risk infants, 2-year survival was 63% ± 5%, and even lower when S2P was performed before age 6 months. Performing S2P after age 3 months may optimize survival of low- and intermediate-risk infants. High-risk infants are unlikely to complete three-stage palliation, and early S2P may increase their risk of mortality. We infer that early referral for cardiac transplantation may increase their chance of survival. Copyright © 2018 The Society of Thoracic Surgeons. Published by Elsevier Inc. All rights reserved.

  13. A operação de Norwood modificada para tratamento da síndrome de hipoplasia do coração esquerdo Modified Norwood procedure for hypoplastic left heart syndrome

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    Fernando A. Fantini

    2004-03-01

    hypoplastic left heart syndrome underwent the modified Norwood operation. Their ages ranged from two to nine days and their weight from 2.5 to 3.7 kg. The mean diameter of the ascending aorta was 6.2 mm. The surgical technique described by FRASER and MEE was employed using exclusively autologous tissue to achieve aortic arch reconstruction. RESULTS: The systemic-pulmonary shunt was perfomed with a 3.0 mm PTFE graft in three patients and with 3.5 mm graft in the other two. Deep hypothermic and circulatory arrest were used in all patients with CP bypass time ranging from 128 to 212 minutes (mean: 154 and circulatory arrest from 41-60 min (mean: 52. There were no intraoperative deaths and all patients underwent delayed sternal closure. There was one postoperative death (9th day caused by sepsis. There was one death two months after discharge cause by aspiration and pneumonia. One child underwent a 2-direcional Glenn and the other two are still waiting for the second stage. CONCLUSION: After this initial experience with this modified Norwood operation we think this is an excellent alternative to correct hypoplastic left heart syndrome in neonates.

  14. Si?ndrome de Burnout y estre?s laboral en profesores

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    Barreto E., Marilu? E.

    2013-01-01

    En la u?ltima de?cada la presencia del si?ndrome de Burnout ha ido en aumento muy considerablemente, como una consecuencia de trabajar intensamente hasta el li?mite de no tomar en cuenta las necesidades personales. Esta situacio?n se acompan?a de sentimientos de falta de ayuda, de impotencia, de actitudes negativas y de una posible pe?rdida de autoestima que sufre el trabajador, descrita como si?ndrome de Burnout (Caballero y Milla?n,1999). La prevalencia del si?ndrome de Burnout a nivel i...

  15. EFECTO DE LA ACUPUNTURA EN EL TRATAMIENTO DEL INSOMNIO EN EL SINDROME CLIMATERICO POSTMENOPAUSICO

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    GUTIERREZ LOPEZ, ALMA MARGARITA

    2010-01-01

    PALABRAS CLAVE: INSOMNIO, SINDROME CLIMATERICO, ACUPUNTURA. EL INSOMNIO, SEGUN EL MANUAL DIAGNOSTICO Y ESTADISTICO DE TRASTORNOS MENTALES, ES LA DIFICULTAD PARA INICIAR O MANTENER EL SUENO, O NO TENER UN SUENO REPARADOR DURANTE AL MENOS 1 MES. ES UN SINTOMA QUE SE PRESENTA ENTRE EL 20 Y 40 POR CIENTO DE LA POBLACION, AFECTANDO CON MAYOR FRECUENCIA A MUJERES Y ANCIANOS. ESTE PORCENTAJE ES MAYOR ENTRE LA POBLACION DE MUJERES CON SINDROME CLIMATERICO. EL SERVICIO DE CLIMATERIO DEL INSTITUT...

  16. Stent Placement in a Neonate with Sano Modification of the Norwood using Semi-Elective Extracorporeal Membrane Oxygenation

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    Mustafa Gulgun

    Full Text Available Abstract Extracorporeal membrane oxygenation (ECMO is a well-established tool of cardiopulmonary circulatory support for cardiopulmonary failure in children and adults. It has been used as a supportive strategy during interventional procedures in neonates with congenital heart disease. Herein, we describe a neonate with hypoplastic left heart syndrome who underwent stenting of the Sano shunt and left pulmonary artery after Norwood Sano operation using intra-procedural ECMO support. The use of ECMO as a bridge to recovery might be a feasible and reasonably safe adjunctive approach in the treatment of complications in selective case of neonates having undergone the Norwood Sano procedure.

  17. NorWood: a gene expression resource for evo-devo studies of conifer wood development.

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    Jokipii-Lukkari, Soile; Sundell, David; Nilsson, Ove; Hvidsten, Torgeir R; Street, Nathaniel R; Tuominen, Hannele

    2017-10-01

    The secondary xylem of conifers is composed mainly of tracheids that differ anatomically and chemically from angiosperm xylem cells. There is currently no high-spatial-resolution data available profiling gene expression during wood formation for any coniferous species, which limits insight into tracheid development. RNA-sequencing data from replicated, high-spatial-resolution section series throughout the cambial and woody tissues of Picea abies were used to generate the NorWood.conGenIE.org web resource, which facilitates exploration of the associated gene expression profiles and co-expression networks. Integration within PlantGenIE.org enabled a comparative regulomics analysis, revealing divergent co-expression networks between P. abies and the two angiosperm species Arabidopsis thaliana and Populus tremula for the secondary cell wall (SCW) master regulator NAC Class IIB transcription factors. The SCW cellulose synthase genes (CesAs) were located in the neighbourhoods of the NAC factors in A. thaliana and P. tremula, but not in P. abies. The NorWood co-expression network enabled identification of potential SCW CesA regulators in P. abies. The NorWood web resource represents a powerful community tool for generating evo-devo insights into the divergence of wood formation between angiosperms and gymnosperms and for advancing understanding of the regulation of wood development in P. abies. © 2017 The Authors. New Phytologist © 2017 New Phytologist Trust.

  18. The influence of systemic hemodynamics and oxygen transport on cerebral oxygen saturation in neonates after the Norwood procedure.

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    Li, Jia; Zhang, Gencheng; Holtby, Helen; Guerguerian, Anne-Marie; Cai, Sally; Humpl, Tilman; Caldarone, Christopher A; Redington, Andrew N; Van Arsdell, Glen S

    2008-01-01

    Ischemic brain injury is an important morbidity in neonates after the Norwood procedure. Its relationship to systemic hemodynamic oxygen transport is poorly understood. Sixteen neonates undergoing the Norwood procedure were studied. Continuous cerebral oxygen saturation was measured by near-infrared spectroscopy. Continuous oxygen consumption was measured by respiratory mass spectrometry. Pulmonary and systemic blood flow, systemic vascular resistance, oxygen delivery, and oxygen extraction ratio were derived with measurements of arterial, and superior vena cava and pulmonary venous gases and pressures at 2- to 4-hour intervals during the first 72 hours in the intensive care unit. Mean cerebral oxygen saturation was 66% +/- 12% before the operation, reduced to 51% +/- 13% on arrival in the intensive care unit, and remained low during the first 8 hours; it increased to 56% +/- 9% at 72 hours, still significantly lower than the preoperative level (P blood flow and oxygen delivery (P blood flow (P = .001) and hemoglobin (P = .02) and negatively correlated with systemic vascular resistance (P = .003). It was not correlated with oxygen consumption (P > .05). Cerebral oxygen saturation decreased significantly in neonates during the early postoperative period after the Norwood procedure and was significantly influenced by systemic hemodynamic and metabolic events. As such, hemodynamic interventions to modify systemic oxygen transport may provide further opportunities to reduce the risk of cerebral ischemia and improve neurodevelopmental outcomes.

  19. Tata Laksana Kasus Perempuan dengan Pure Gonadal Dysgenesis 46, XY (Sindrom Swyer)

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    Kanadi Sumapradja; Mila Maidarti; Achmad K. Harzif; Budi Wiweko; Gita Pratama; Muharam Natadisastra; Andon Hestiantoro

    2016-01-01

    Disorders of sex development (DSD) adalah kelainan medis yang dikaitkan dengan ketidakcocokan antara kromosom, gonad dan fenotip. Sindrom Swyer adalah kelainan berupa disgenesis gonad 46,XY dan diikuti dengan tidak terjadinya pelepasan anti-mullerian hormone (AMH) dari gonad yang mengalami disgenesis sehingga mengakibatkan berkembangnya duktus muller menjadi uterus. Keadaan tersebut mengakibatkan pasien mengeluh amenorea primer dan organ seks sekunder tidak berkembang. Orientasi gender umumn...

  20. Factores de riesgo para sindrome metabólico en pacientes con higado graso.

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    Uzcátegui, Lilia; Ángel, José Gregorio; Martínez, Dasyl; Gómez Pérez, Roald; Arata de Bellabarba, Gabriela

    2008-01-01

    Editorial. Periodismo, mal periodismo, mal de Chagas y ciencias de la salud. Editorial. Journalism, poor journalim, Chagas disease and health sciences. Salinas, Pedro José Cistoadenoma seroso de ovario y embarazo. Reporte de caso. Ovarian serous cystoadenoma and pregnancy. Case report Terán, Penélope; Uribarri, Carolina; Castillo, Sonia y Salinas, Roberto. Factores de riesgo para sindrome metabólico en pacientes con higado graso. Risk factors of the metabolic syndrome i...

  1. Hubungan Resistensi Insulin dengan Gambaran Klinis Sindrom Ovarium Polikistik

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    Meliza Wahyuni

    2015-09-01

    Full Text Available Abstrak Sindrom Ovarium Polikistik (SOPK merupakan kelainan endokrin dan metabolik pada wanita usia reproduksi. SOPK merupakan kumpulan gejala dari amenore, oligomenore, infertilitas, obesitas, hirsutisme, acne, alopesia, dan akantosis nigrikan. Resistensi insulin diyakini sebagai salah satu penyebab tersering dari SOPK melalui berbagai mekanisme. Tujuan penelitian ini adalah untuk mengetahui hubungan resistensi insulindengan gambaran klinis SOPK. Penelitian ini dilakukan pada pasien SOPK dengan menggunakan studi cross sectional dengan pendekatan retrospektif, yaitu mengumpulkan kejadian masa lalu dari tahun 2009 - 2011, jumlah sampel 105 orang. Analisis statistik yang digunakan adalah uji chi-square. Hasil penelitian didapatkan 33,3% penderita SOPK mengalami resistensi insulin. Berdasarkan gambaran klinis 35,23% amenore, 64,77% oligomenore, 72,04% infertilitas, 50,5% obesitas, 0,95% hirsutisme, acne 20%, alopesia dan akantosis nigrikan0%. Dari 33,3% SOPK dengan resistensi insulin 40% amenore, 60% oligomenore, 71,9% infertilitas, 77,14% obesitas, dan 0% hirsutisme. Berdasarkan hasil uji statistik ditemukan hubungan bermakna antara resistensi insulin dengan obesitas (p<0,05 dan tidak ditemukan hubungan bermakna antara resistensi insulin dengan infertilitas, hirsutisme, dan acne (p>0,05.Kata Kunci: SOPK, resistensi insulin, gambaran klinisAbstract Polycystic Ovary Syndrome (PCOS is an endocrine and metabolic disorders that is common in reproductive-aged women. PCOS is a group of symptoms, such as amenorrhea, oligomenorrhea, infertility, obesity, hirsutism, acne, alopecia, and achanthosis nigricans. Insulin resistance is believed to be one of the most common causes of PCOS through a various mechanisms. The objective of this study was to find out the relationship between insulin resistance and clinical manifestation of PCOS. This research was done in patients with PCOS using cross sectional study with retrospective approach. Data was collected from

  2. Radiographic and tomographic aspects of meningeal hemangiosarcoma in a German Shepherd dog with clinical signs of cauda equina sindrome

    International Nuclear Information System (INIS)

    Pinto, A.C.B. de C.F.; Ferrigno, C.R.A.; Matera, J.M.; Torres, L.N.; Sinhorini, I.L.; Cortopassi, S.R.G.; Hage, M.C.F.N.S.

    2007-01-01

    Hemangiosarcoma is a highly malignant neoplasia derived from the endothelial cell line and, therefore, can arise in any tissue with blood vessels. A case of a rare meningeal site of hemangiosarcoma in an eight-year old German Shepherd dog with clinical signs of cauda equina sindrome is described. The diagnosis was made based on clinical, radiographic, tomographic and histopathological findings [pt

  3. La sindrome da vibrazioni mano-braccio : studi epidemiologici e clinici della funzione vascolare e neurosensitiva in coorti di lavoratori esposti a vibrazioni segmentali

    OpenAIRE

    Ronchese, Federico

    2013-01-01

    Premesse: un’elevata esposizione a vibrazioni trasmesse al sistema mano-braccio (hand-transmitted vibration, HTV) è correlata con l’insorgenza di disturbi neurologici, vascolari periferici e osteoarticolari a carico degli arti superiori. Il termine “sindrome da vibrazione mano-braccio” (hand-arm vibration syndrome, HAVS) viene comunemente utilizzato per designare unitariamente il complesso di tali lesioni. La componente vascolare di tale sindrome è rappresentata da una forma secondaria di fen...

  4. Serial changes in anatomy and ventricular function on dual-source cardiac computed tomography after the Norwood procedure for hypoplastic left heart syndrome

    Energy Technology Data Exchange (ETDEWEB)

    Goo, Hyun Woo [University of Ulsan College of Medicine, Asan Medical Center, Department of Radiology and Research Institute of Radiology, Seoul (Korea, Republic of)

    2017-12-15

    Accurate evaluation of anatomy and ventricular function after the Norwood procedure in hypoplastic left heart syndrome is important for treatment planning and prognostication, but echocardiography and cardiac MRI have limitations. To assess serial changes in anatomy and ventricular function on dual-source cardiac CT after the Norwood procedure for hypoplastic left heart syndrome. In 14 consecutive patients with hypoplastic left heart syndrome, end-systolic and end-diastolic phase cardiac dual-source CT was performed before and early (average: 1 month) after the Norwood procedure, and repeated late (median: 4.5 months) after the Norwood procedure in six patients. Ventricular functional parameters and indexed morphological measurements including pulmonary artery size, right ventricular free wall thickness, and ascending aorta size on cardiac CT were compared between different time points. Moreover, morphological features including ventricular septal defect, endocardial fibroelastosis and coronary ventricular communication were evaluated on cardiac CT. Right ventricular function and volumes remained unchanged (indexed end-systolic and end-diastolic volumes: 38.9±14.0 vs. 41.1±21.5 ml/m{sup 2}, P=0.7 and 99.5±30.5 vs. 105.1±33.0 ml/m{sup 2}, P=0.6; ejection fraction: 60.1±7.3 vs. 63.8±7.0%, P=0.1, and indexed stroke volume: 60.7±18.0 vs. 64.0±15.6 ml/m{sup 2}, P=0.5) early after the Norwood procedure, but function was decreased (ejection fraction: 64.2±2.6 vs. 58.1±7.1%, P=0.01) and volume was increased (indexed end-systolic and end-diastolic volumes: 39.2±14.9 vs. 68.9±20.6 ml/m{sup 2}, P<0.003 and 107.8±36.5 vs. 162.9±36.2 ml/m{sup 2}, P<0.006, and indexed stroke volume: 68.6±21.7 vs. 94.0±21.3 ml/m{sup 2}, P=0.02) later. Branch pulmonary artery size showed a gradual decrease without asymmetry after the Norwood procedure. Right and left pulmonary artery stenoses were identified in 21.4% (3/14) of the patients. Indexed right ventricular free wall

  5. Tata Laksana Kasus Perempuan dengan Pure Gonadal Dysgenesis 46, XY (Sindrom Swyer

    Directory of Open Access Journals (Sweden)

    Kanadi Sumapradja

    2016-06-01

    Full Text Available Disorders of sex development (DSD adalah kelainan medis yang dikaitkan dengan ketidakcocokan antara kromosom, gonad dan fenotip. Sindrom Swyer adalah kelainan berupa disgenesis gonad 46,XY dan diikuti dengan tidak terjadinya pelepasan anti-mullerian hormone (AMH dari gonad yang mengalami disgenesis sehingga mengakibatkan berkembangnya duktus muller menjadi uterus. Keadaan tersebut mengakibatkan pasien mengeluh amenorea primer dan organ seks sekunder tidak berkembang. Orientasi gender umumnya adalah sebagai perempuan, karena kurangnya paparan hormon androgen terhadap otak. Tatalaksana kasus Disorders of sex development (DSD sangat mementingkan pasien (patient-centered sehingga tatalaksana medikamentosa maupun pembedahan harus berdasarkan pemahaman pasien terhadap orientasi gendernya. Pada makalah ini dilaporkan kasus sindrom swyer pada seorang perempuan usia 29 tahun dengan keluhan amenorea primer. Hasil analisis kromosom 46,XY (20 metafase dengan hormon follicle stimulating hormone (FSH 31.5miu/ml, luteinizing hormone (LH 10.8miu/ml, estradiol (E2 <5pg/ml, testosteron total (T <0.0025ng/ml. Tatalaksana medikamentosa adalah memberikan terapi hormon estrogen untuk membantu proses feminisasi. Karena risiko tinggi terjadinya tumor pada kasus disgenesis gonad intra-abdomen dengan kromosom Y, maka direncanakan tindakan gonadektomi. Kata kunci: Tatalaksana, Sindrom Swyer, pure gonadal dysgenesis Case Management of Pure Gonadal Dysgenesis 46, XY (Sindrom Swyer Abstract Disorders of sex development (DSD are medical conditions in which the development of chromosomal, gonadal or anatomic sex varies from normal and may be incongruent with each other. Swyer syndrome is a condition caused by pure gonadal dysgenesis 46,XY, which followed by inadequate anti-mullerian (AMH production results in maintenance and further development of mullerian duct into uterus. Therefore, many patients who suffer from this condition initially come with chief complaint of primary

  6. Hypoplastic Left Heart Syndrome is not Associated with Worse Clinical or Neurodevelopmental Outcomes Than Other Cardiac Pathologies After the Norwood-Sano Operation.

    Science.gov (United States)

    Martin, Billie-Jean; De Villiers Jonker, I; Joffe, Ari R; Bond, Gwen Y; Acton, Bryan V; Ross, David B; Robertson, Charlene M T; Rebeyka, Ivan M; Atallah, Joseph

    2017-06-01

    There is evidence to suggest that patients undergoing a Norwood for non-HLHS anatomy may have lower mortality than classic HLHS, but differences in neurodevelopmental outcome have not been assessed. Our objective was to compare survival and neurodevelopmental outcome during the same surgical era in a large, well-described cohort. All subjects who underwent a Norwood-Sano operation between 2005 and 2014 were included. Follow-up clinical, neurological, and developmental data were obtained from the Western Canadian Complex Pediatric Therapies Follow-up Program database. Developmental outcomes were assessed at 2 years of age using the Bayley Scales of Infant and Toddler Development (Bayley-III). Survival was assessed using Kaplan-Meier analysis. Baseline characteristics, survival, and neurodevelopmental outcomes were compared between those with HLHS and those with non-HLHS anatomy (non-HLHS). The study comprised 126 infants (75 male), 87 of whom had HLHS. Five-year survival was the same for subjects with HLHS and those with non-HLHS (HLHS 71.8%, non-HLHS 76.9%; p = 0.592). Ninety-three patients underwent neurodevelopmental assessment including Bayley-III scores. The overall mean cognitive composite score was 91.5 (SD 14.6), language score was 86.6 (SD 16.7) and overall mean motor composite score was 85.8 (SD 14.5); being lower than the American normative population mean score of 100 (SD 15) for each (p-value for each comparison,  0.05). In the generalized linear models, dominant right ventricle anatomy (present in 117 (93%) of patients) was predictive of lower language and motor scores. Comparative analysis of the HLHS and non-HLHS groups undergoing single ventricle palliation including a Norwood-Sano, during the same era, showed comparable 2-year survival and neurodevelopmental outcomes.

  7. Right ventricular to pulmonary artery conduit instead of modified Blalock-Taussig shunt improves postoperative hemodynamics in newborns after the Norwood operation.

    Science.gov (United States)

    Mair, Rudolf; Tulzer, Gerald; Sames, Eva; Gitter, Roland; Lechner, Evelyn; Steiner, Jürgen; Hofer, Anna; Geiselseder, Gertraud; Gross, Christoph

    2003-11-01

    Perioperative mortality, prolonged postoperative recovery after the Norwood procedure, and mortality between stage I and stage II might be related to shunt physiology. A right ventricular to pulmonary artery conduit offers a banded physiology in contrast to a Blalock-Taussig shunt. The purpose of this study was to assess the hemodynamic differences and their consequences in the postoperative course between Norwood patients with a Blalock-Taussig shunt and those with a right ventricular to pulmonary artery conduit. From October 1999 until May 2002, 32 unselected consecutive patients underwent a Norwood procedure at the General Hospital Linz. The first 18 patients received a Blalock-Taussig shunt. In the remaining 14 patients we performed a right ventricular to pulmonary artery conduit. Both groups were compared. The diastolic blood pressure was significantly higher in the right ventricular to pulmonary artery conduit group (P <.001). Despite a higher FIO(2), PO(2) levels tended to be lower in the first 5 postoperative days. At the age of 3 months, catheterization laboratory data showed a lower Qp/Qs ratio in the same group (0.86 [0.78; 1] versus 1.55 [1.15; 1.6]; P =.005) and a higher dp/dt (955 [773; 1110] vs 776 [615; 907]; P =.018). (Descriptive data reflect medians and quartiles [in brackets].) Hospital survival was 72% in the Blalock-Taussig shunt group versus 93% in the right ventricular to pulmonary artery conduit group. Mortality between stage I and stage II was 23% in the Blalock-Taussig shunt group versus 0% in the right ventricular to pulmonary artery conduit group. A higher diastolic blood pressure and a lower Qp/Qs ratio were associated with a more stable and efficient circulation in patients with a right ventricular to pulmonary artery conduit. More intensive ventilatory support was necessary during the first postoperative days. We did not note any adverse effects of the ventriculotomy on ventricular performance.

  8. Sindrome de apnea obstructiva del sueño y alteración en la tolerancia a la glucosa

    OpenAIRE

    Verner, Codoceo R.

    2013-01-01

    La disminución del riesgo cardiovascular sigue siendo uno de los objetivos principales de la Salud Pública. Contribuyen a él patologías como la Diabetes Mellitus, Obesidad e Hipertensión Arterial, todas las cuales no han logrado ser detenidas en su creciente prevalencia. Existen factores hasta ahora no considerados en forma integral al tratamiento de esta triada, como el Sindrome de Apnea Obstructiva del Sueño, que se sabe está asociado a éstas, plantea la idea de un tratamiento sinérgico com...

  9. MR imaging in the diagnosis of the os trigonum syndrome; Il ruolo della Risonanza Magnetica nella diagnosi della sindrome dell'os trigonum

    Energy Technology Data Exchange (ETDEWEB)

    Tamburrini, O.; Porpiglia, H.; Barresi, D.; Bertucci, B.; Console, D. [Catanzaro Univ. Magna Grecia, Catanzaro (Italy). Radiologia, Dipt. di Medicina Sperimentale e Clinica

    1999-12-01

    In this paper is investigated the yield of Magnetic Resonance Imaging (MRI) in hind foot conditions, particularly the os trigonum syndrome, which are very difficult to diagnose clinically. 7 consecutive patients were examined. They were complaining of hind foot pain for more than 4 months (male:female=1:6; age range 16-22 years, average 18.6). Three patients practiced competitive sports and 4 ballet. It was performed conventional radiography (orthogonal projections) and then MRI with a 0.5 T superconductive unit with surface coils; MR images were acquired with T1-weighted spin-echo (SE), T2-weighted gradient-echo (GRE), and fast inversion recovery (FIR) fat-suppressed sequences with 4 mm thickness and 0 mm gap. In 2 cases the os trigonum had irregular margins with subchondral sclerosis and widened synchondrosis. In 3 patients it was found flessor hallucis longus tenosynovitis, likely caused by tendon compression and displacement within its sheath; there were neither os trigonum marrow edema nor synchondrosis widening. One patient had os trigonum hypertrophy, mild synchondrosis widening and marrow edema, in the os trigonum and the posterior aspect of talus. One patient had the os trigonum, but no signs referable to the os trigonum syndrome. In the posterior impingement syndrome, the objective is to show inflammatory changes in the posterior capsule of the ankle joint, adjacent ligaments, tendons and chondrosynovial surface. MR provides important information on soft tissues involvement, synovial reaction, chondral and subchondral bone injuries and the association of flexor hallucis longus synovitis, if present. MRI also yields detailed information for correct therapeutic approach. In conclusion, MRI appears to be the technique of choice, after conventional radiography, thanks to its non invasiveness, multi planarity, and high spatial and contrast resolution. [Italian] Scopo di questo lavoro e' quello di sottolineare il determinante contributo informativo della

  10. Sindrome de apnea obstructiva del sueño y alteración en la tolerancia a la glucosa

    Directory of Open Access Journals (Sweden)

    Codoceo R. Verner, Dr.

    2013-05-01

    Full Text Available La disminución del riesgo cardiovascular sigue siendo uno de los objetivos principales de la Salud Pública. Contribuyen a él patologías como la Diabetes Mellitus, Obesidad e Hipertensión Arterial, todas las cuales no han logrado ser detenidas en su creciente prevalencia. Existen factores hasta ahora no considerados en forma integral al tratamiento de esta triada, como el Sindrome de Apnea Obstructiva del Sueño, que se sabe está asociado a éstas, plantea la idea de un tratamiento sinérgico como alternativa para lograr las metas terapéuticas. Sin embargo las expectativas creadas no concuerdan con los resultados comunicados, demostrándose que faltan aún estudios que realizar. Se mencionan diversos estudios epidemiológicos y se resumen los fundamentos biológicos que explican la asociación SAOS - DM.

  11. Sindrom Koroner Akut dengan Komplikasi Udem Paru Akut dan Henti Jantung

    Directory of Open Access Journals (Sweden)

    Eka Fithra Elfi

    2015-05-01

    Full Text Available Abstrak Salah satu manifestasi sindrom koroner akut yang banyak terjadi adalah non ST elevation segment ofmyocardial infarction (NSTEMI. NSTEMI dapat menimbulkan berbagai komplikasi seperti udem paru akut, hentijantung, bahkan kematian. Dilaporkan seorang pasien wanita 53 tahun dengan diagnosis NSTEMI. Pasien mengalamihenti jantung dan udem paru akut yang merupakan gagal jantung akut. Henti jantung pada pasien ini diawali  oleharitmia maligna yang disebabkan oleh kurangnya asupan oksigen pada otot jantung. Pasien memerlukanpenatalaksanaan multidisiplin dan intensif. Pada pasien diberikan dukungan ventilasi mekanik dengan tekanan positifyaitu CPAP untuk mengurangi mortalitas edema paru. Selain itu diperlukan pemantauan ketat hemodinamik danasupan nutrisi pada pasien. Selain masalah jantung dan paru, pada pasien juga terjadi penurunan kesadaran setalahhenti jantung. Gangguan pada sistem saraf pusat merupakan penyebab kematian yang cukup tinggi pada pasien yangselamat dari henti jantung dan resusitasi. Berdasarkan hal itu, perlu dilakukan resusitasi kardioserebral pada pasiendengan henti jantung. Perbedaan utama dengan resusitasi jantung paru adalah pentingnya manajemen j alan nafasyang lebih lengkap dengan ventilasi mekanik.Kata kunci: NSTEMI, henti jantung, udem paru akut Abstract One manifestation of acute coronary syndrome is the case is non-ST segment elevation of myocardial infarction(NSTEMI. NSTEMI may cause various complications: an acute pulmonary edema, cardiac arres, and even death.Reported a 53 years old female patient with a diagnosis of NSTEMI. The patient had a cardiac arrest and acutepulmonary edema is acute heart failure. Cardiac arrest in this patient initiated by malignant arrhythmias caused by lackof oxygen to the heart muscle. Patients require multidisciplinary and intensive management. In patients receivedmechanical ventilatory support with positive pressure that CPAP to reduce the mortality of pulmonary edema. Alsorequired

  12. Right-ventricular global longitudinal strain may predict neo-aortic arch obstruction after Norwood/Sano procedure in children with hypoplastic left heart syndrome.

    Science.gov (United States)

    Raucci, Frank J; Seckeler, Michael D; Saunders, Christine; Gangemi, James J; Peeler, Benjamin B; Jayakumar, K Anitha

    2013-01-01

    Neo-aortic arch obstruction (NAAO) is a common complication following the Norwood/Sano procedure (NP) for hypoplastic left heart syndrome (HLHS) and is associated with increased morbidity and mortality. However, there is currently no objective method for predicting which patients will develop NAAO. This study was designed to test the hypothesis that hemodynamic changes from development of NAAO after NP in patients with HLHS will lead to changes in myocardial dynamics that could be detected before clinical symptoms develop with strain analysis using velocity vector imaging. Patients with HLHS who had at least one cardiac catheterization after NP were identified retrospectively. Strain analysis was performed on all echocardiograms preceding the first catheterization and any subsequent catheterization performed for intervention on NAAO. Twelve patients developed NAAO and 30 patients never developed NAAO. Right ventricular strain was worse in the group that developed NAAO (-6.2 vs. -8.6 %, p = 0.040) at a median of 59 days prior to diagnosis of NAAO. Those patients that developed NAAO following NP were significantly younger at the time of first catheterization than those that did not develop NAAO (92 ± 50 vs. 140 ± 36 days, p = 0.001). This study demonstrates that right ventricular GLS is abnormal in HLHS patients following NP and worsening right ventricular strain may be predictive of the future development of NAAO.

  13. Pancreatite esclero-gomosa simulando sindrome cancerosa da cabeça do pâncreas

    Directory of Open Access Journals (Sweden)

    A. Penna de Azevedo

    1944-06-01

    Full Text Available Em um homem de 49 anos de idade, observou-se um sindrome de tumor da cabeça do pâncreas. Realizada a intervenççao cirúrgica foi verificada a presença de uma formaão dura de aspecto fibroso, medindo 9 x 7,5 x 6,5 cm. O exame microscópico mostrou tratar-se de uma pancreatite indurativa associada à presença de gomas miliares, infiltração de eosinófilos e lesões produtivas dos vasos sanguíneos, correspondendo ao aspecto dos processo esclerogomosos sifilíticos do pâncreas.A tumor of the head of the pancreas is reported ina a male, 49 years old, which corresponded to a nodule of fibrous tissue measuring 9 x 7,5 x 6,5 cm. Microscopically, a chronic interstitial pancreatitis associated to miliary gummata, eosinophilic infiltration and proliferation of blood vessels was found and the diagnosis of siphilitic pancreatitis was done.

  14. Sindrome de Lennox-Gastaut com inicio tardio: I - frequencia de casos com inicio anterior e ulterior aos 6 anos de idade, fatores etiologicos e nivel intelectual

    Directory of Open Access Journals (Sweden)

    Amilton Antunes Barreira

    1980-12-01

    Full Text Available De um grupo de 66 pacientes com sindrome de Lennox Gastaut, 15 apresentaram as primeiras manifestações clinicas após os 6 anos de idade. Desses, 12 foram acompanhados durante o período médio de 2 anos e 6 meses, com avaliações neurológicas a intervalos de cerca de 2 meses. A revisão das publicações pertinentes permitiu estabelecer que em 20% das casuisticas apreciadas a sindrome de Lennox-Gastaut se inicia após o 6° ano de vida. As avaliações clinicas permitiram verificar que nosos pacientes apresentaram incidência de lesões neurológicas graves precedendo a instalação da síndrome por vários anos. As avaliações psicométricas evidenciaram intenso comprometimento do nível intelectual em contraste com os dados da literatura sobre a síndrome de Lennox-Gastaut de início tardio.

  15. Hybrid palliation for critical systemic outflow obstruction: neither rapid stage 1 Norwood nor comprehensive stage 2 mitigate consequences of early risk factors.

    Science.gov (United States)

    Davies, Ryan R; Radtke, Wolfgang; Bhat, Majeed A; Baffa, Jeanne M; Woodford, Edward; Pizarro, Christian

    2015-01-01

    Hybrid palliation with branch pulmonary artery banding (bPAB) has become increasingly common in the early management of patients with critical left ventricular outflow obstruction. Optimal subsequent surgical palliation remains undefined. We retrospectively reviewed patients undergoing initial bPAB for single ventricle physiology with systemic outflow obstruction (2001-2013, n = 37). Patients were stratified by subsequent surgical palliation: stage 1 Norwood (St1N, n = 14), comprehensive stage 2 (CompSt2, n = 11), and none (n = 12). bPAB was performed at a median of 4 days and 2.7-kg, post-bPAB mortality was increased in patients with aortic atresia (odds ratio [OR] = 3.8, 95% confidence interval [CI] = 0.9-15.8) or birth weight <2 kg (OR = 13.8, 95% CI = 1.4-136.4). Palliation strategy did not affect transplant-free survival through second-stage palliation (St1N: 71.4%, CompSt2: 72.7%, P = .9). Among CompSt2 patients, there was a trend toward poorer survival with aortic atresia (0% vs 80%, P = .09); birth weight <2.5 kg was associated with decreased survival (0% vs 89.0%, P = .01). A trend toward lower survival with low birth weight was evident among St1N patients (<2 kg, OR = 0.1, 95% CI = 0.01-1.9, P = .09). CompSt2 mortality occurred on postoperative days 0 and 1. Mortality following St1N occurred at a median of 38.5 days (range = 23.5-104.5). Among survivors of stage 2 palliation, Fontan completion was performed in the same number of patients in each group (St1N: 6/8, 75%, CompSt2: 6/8, 75%). Both St1N and CompSt2 are viable options for subsequent palliation following initial hybrid procedure. Transplant-free survival and eventual Fontan candidacy are similar between groups. Delaying surgical palliation with the CompSt2 did not mitigate the impact of early risk factors such as low birth weight and aortic atresia. Copyright © 2015 The American Association for Thoracic Surgery. Published by Elsevier Inc. All rights reserved.

  16. Os trigonum tarsi syndrome. Magnetic Resonance features; Sindrome dell'os trigonum tarsi. Ruolo della Risonanza Magnetica

    Energy Technology Data Exchange (ETDEWEB)

    Iovane, A.; Finazzo, M.; Carcione, A.; De Maria, M; Lagalla, R. [Palermo Policlinico Univ. P. Giaccone, Palermo (Italy). Ist. di Radiologia; Midiri, M. [Bari Policlinico Univ., Bari (Italy). Ist. di Radiologia

    2000-02-01

    aspect of the tibia, or hypo mobility to pseudoarthrosis. Forced plantar flexion acquisitions are particularly useful in this condition because can demonstrate the mechanism of injury. [Italian] L'os trigonum tarsi e' un osso accessorio del piede localizzato in sede posterolaterale rispetto al tubercolo esterno dell'astragalo e di solito non da' alcuna sintomatologia. In particolari condizioni, che comportano sollecitazioni o microtraumi ripetuti nel tempo a livello del retropiede puo' essere responsabile di talalgia posteriore realizzando la cosidetta sindrome dell'os trigonum tarsi. Il dolore e' localizzato nella sede preachillea. La diagnosi tuttavia risulta particolarmente complessa i quanto numerose altre forme patologiche si manifestano con la medesima sintomatologia clinica. Con la radiologia tradizionale e' possibile dimostrare la presenza dell'os trigonum e le sue eventuali alterazioni morfo-strutturali. La RM (Risonanza Magnetica) di contro consente non solo di identificare le alterazioni strutturali dell'osso ma anche di riconoscere le lesioni associate dei tessuti molli. Sono stati studiati con RM nove pazienti affetti da sindrome dell'os trigonum tarsi. I pazienti sono stati esaminati nella posizione supina con il piede in posizione indifferente e successivamente bloccato nella flessione plantare. Lo studio e' stato condotto con magnete superconduttivo da 0,5 T impiegando una bobina dedicata per le estremita'. Sono state utilizzate sequenze spin-echo T1, gradient-echo T2* e fast inversion recovery secondo piani di scansione assiali e saggitali. In tutti i pazienti esaminati sono state valutate: sede e morfologia dell'os trigonum; caratteristiche dell'intensita' del segnale delle strutture ossee, cartilaginee e dei tessuti adiacenti; presenza di eventuali lesioni tendinee associate. Non sono state osservate anomalie di sede ne' di forma dell'os trigonum. L

  17. Afferent loop syndrome - a case report; Sindrome da alca aferente - relato de um caso

    Energy Technology Data Exchange (ETDEWEB)

    Borges, Ana Karina Nascimento; Pinheiro, Marco Antonio Lopes; Galvao, Cristine Norwig [Fundacao Pio XII - Hospital do Cancer de Barretos, SP (Brazil)

    2000-02-01

    The afferent loop syndrome occurs in patients with previous gastric surgery for tumor, when there is anastomotic edema, use of inappropriate reconstruction technique for gastro jejunostomy or recurrent gastric cancer. Complaints such jaundice, intermittent abdominal distension associated with pain, and vomiting should be investigated in order to rule out this syndrome. (author)

  18. Aktivitas Olahraga dengan Kejadian Sindrom Premenstruasi pada Anggota Perempuan UKM INKAI UNS

    Directory of Open Access Journals (Sweden)

    Arantika Meidya Pratiwi

    2016-03-01

    Full Text Available The purpose of this study is to determine the relationship between sport activies with premenstrual syndrome. Observational research methods using analytic techniques with cross sectional approach. This research was conducted at UKM (Unit of Student Activity INKAI (Institute Karate Indonesia UNS, on June 2012. The 36 sample of population from 40 of woman member was taken by simple random sampling. Analysis test with alpha= 0,05 obtained of Spearman rank correlation value at -0,821 that indicated strengthen correlation in negative direction. The signifi cance value are 0,000 smaller than 0,05 that indicated Ho was rejected and Ha was accepted. The conclusion are any negative relationship between sports activities with the premenstrual syndrome, if the value of sports activity was higher the value of premenstrual syndrome was lower.

  19. Hubungan Kadar Glukosa Darah Saat Masuk Rumah Sakit Dengan Lama Hari Rawat Pasien Sindrom Koroner Akut (SKA Di RSUP Dr. M. Djamil Padang

    Directory of Open Access Journals (Sweden)

    Rosi Oktarina

    2013-05-01

    Full Text Available AbstrakHiperglikemia masih menjadi topik penelitian yang sering dihubungkan dengan kejadian sindrom koroner akut (SKA di dunia, terutama hiperglikemia saat masuk rumah sakit. Hal ini didasari oleh beberapa pengaruh kadar glukosa darah yang tinggi terhadap sistem kardiovaskuler seperti gangguan fungsi ventrikel kiri, stroke volume yang menurun, regurgitasi katup mitral berulang, gangguan pada waktu pengisian diastolik hingga risiko tinggi untuk arritmia, serta hubungannya dengan peningkatan risiko trombosis. Sehingga semakin memperjelas pengaruh hiperglikemia yang tidak hanya dapat meningkatkan risiko terjadinya SKA, melainkan juga dapat memperburuk kondisi pasien SKA sendiri. Penelitian ini bertujuan mengidentifikasi hubungan kadar glukosa darah sewaktu dengan lama hari rawat pasien Sindrom Koroner Akut (SKA. Jenis penelitian yang digunakan adalah penelitian analitik dengan menggunakan desain penelitian Cross Sectional Study. Penelitian ini menggunakan data sekunder yang diambil di Instalasi Rekam Medik (Medical Record, yakni data rekam medik pasien yang didiagnosis sebagai Sindrom Koroner Akut (SKA yang dirawat inap di Rumah Sakit Umum Pusat DR. M. Djamil Padang Periode Januari–Desember 2011. Ditemukan sebagian besar pasien SKA masuk rumah sakit dengan kadar Glukosa Darah Sewaktu (GDS sebesar ≥ 200 mg/dl (40% dan lama hari rawat sebesar ≥ 7 hari (52%. Dari hasil analisa bivariat dengan menggunakan uji korelasi Spearman ditemukan adanya hubungan searah antara kadar glukosa darah saat masuk rumah sakit dengan lama hari rawat pasien SKA dengan kekuatan hubungan yang sedang, r = +0,492, p = 0, 000 (p<0,05. Pemantauan terhadap kadar GDS yang diperiksa saat pasien masuk rumah sakit perlu dilakukan dan untuk penelitian yang akan datang diharapkan dapat diteliti lebih lanjut faktor-faktor lain yang mempengaruhi lama hari rawat pasien SKA.Kata kunci: Kadar glukosa darah saat masuk RS, lama hari rawatAbstractHyperglicemia is still become a research

  20. L' influenza nella regione Lazio dal 1999 al 2003: casi di sindrome influenzale, ricoveri ospedalieri per malattie respiratorie e coperture vaccinali

    Directory of Open Access Journals (Sweden)

    A. Pasquarella

    2003-05-01

    Full Text Available

    Obiettivi: 1 Descrivere l’andamento dei ricoveri ospedalieri per patologie respiratorie acute e croniche concomitanti alle epidemie stagionali da virus influenzale dal 1999 al 2003, in relazione con la segnalazione dei casi di sindrome influenzale (ILI da parte dei medici sentinella. 2 Misurare l’eccesso dell’ospedalizzazione influenza-correlata nelle diverse fasce di età rispetto ai periodi non epidemici. 3 Analizzare le modificazioni del ricorso al ricovero ospedaliero in relazione al tasso di copertura della vaccinazione antinfluenzale nella popolazione anziana, su scala regionale e nelle diverse ASL.

    Metodi: sono stati estratti dal Sistema Informativo
    Ospedaliero i ricoveri per patologie respiratorie
    influenza-correlate (codici ICD9-CM: 480-487; 460-
    466; 490-496 relativi agli anni 1999-2003.
    L’incidenza di ILI è stata stimata sulla base delle
    segnalazioni dei medici sentinella afferenti alla
    rete FLU-ISS dell’Istituto Superiore di Sanità.

    Per il calcolo dei tassi di copertura è stato utilizzato l’archivio
    nominativo dei soggetti vaccinati contro l’influenza,
    attivo nella regione Lazio dal 1999. Nel periodo considerato sono stati messi in relazione i tassi di ospedalizzazione età-specifici, le incidenze di ILI e le coperture vaccinali. L’eccesso di ospedalizzazione è stato misurato confrontando i tassi relativi ai periodi epidemici e non epidemici.

    Risultati: i tassi di ospedalizzazione per malattie respiratorie sono risultati costantemente superiori nei periodi di maggiore circolazione virale, in particolare negli ultrasessantaquattrenni. Con il progressivo aumento del tasso di copertura vaccinale regionale (da circa il 25% della stagione 1999-2000 a oltre il 60% della stagione 2002-2003 non si è registrata una corrispondente diminuzione dei ricoveri ospedalieri per patologie influenza-correlate.
    L

  1. SINDROME DE APNEAS/HIPOPNEAS DURANTE EL SUEÑO EN EDAD PEDIÁTRICA

    Directory of Open Access Journals (Sweden)

    Navazo Eguía A

    2006-08-01

    Full Text Available SUMMARY:Sleep disordered breathing (SDB is a common condition in children. Sleep Apnea/Hypopnea syndrome (SAHS in children is a frequent sleep disorder, with a prevalence estimated to be 1 - 3% of all children. The most frequent cause of SAHS in children is the adenotonsillar hypertrophy. SAHS in children can result in severe complications if left untreated such as impaired physical growth, delayed development, poor school performance and in severe cases, hypertension and cor pulmonale, nevertheless, yet it is an under recognized condition. The gold standard diagnostic technique is the nocturnal polysomnography (PSG, guidelines for performing laboratory-based polysomnography in children have been established, the sleep laboratory should be a nonthreatening environment and personnel with pediatric training should record, score and interpret the study. The diagnostic criteria for SAHS in adults is not useful for diagnosis of SAHS in children. Adenotonsillectomy is the most common treatment for children with SAHS.RESUMEN:Los trastornos respiratorios del sueño en los niños, en particular el Síndrome de Apneas/Hipopneas durante el sueño (SAHS, es una patología frecuente, que afecta entre el 1 - 3% de la población infantil, siendo su causa más frecuente la hipertrofia adenoamigdalar. Es una enfermedad infradiagnosticada y que conlleva importantes complicaciones como son alteraciones del crecimiento, alteraciones cognitivas e incluso en casos severos Cor Pulmonale. La polisomnografía nocturna (PSG, es la técnica diagnóstica de elección para el diagnóstico del SAHS en los niños, pero en la población infantil es necesario tener en cuenta una serie de consideraciones, como son la edad de la población que se estudia, entorno adecuado y la necesidad de técnicos entrenados en el cuidado de los niños. Los criterios diagnósticos del SAHS para adultos no son útiles en los niños. El tratamiento de elección en los niños con SAHS es la

  2. VALIDASI PEMERIKSAAN INFEKSI MENULAR SEKSUAL SECARA PENDEKATAN SINDROM PADA KELOMPOK WANITA BERPERILAKU RISIKO TINGGI

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    Endang R. Sedyaningsih Mamahit

    2012-09-01

    Full Text Available Accurate and adequate treatment of STIs is a critical component of STI-control activities to reduce transmission and sequelaes. On the other hand, chronic shortage in skilled staff and laboratory equipment in many countries necessitate the use of clinical skills more in order to diagnose and differentiate STIs. For these places, the WHO has recommended and produced a protocol of it syndromic approach management of STIs in place of treatment by -etiology. Since 1997 the Indonesia Ministry of Health has been conducting national training on this method. However, the syndromic approach for vaginal discharge is known to be problematic since differentiation among cervicitis, vaginitis, and even normal condition is difficult. The main objective of this study is to determine the sensitivity, specificity and positive predictive value of the syndromic approach management of women with signs and/or symptoms of abnormal vaginal discharge. The sample population were women with high risk sexual behaviors in East Java and North Sulawesi provinces. The laboratory tests using DNA hybridization probe technique (the PACE 2 test, Gen-Probe, San Diego, Calif. for Neisseria gonorrhoeae and Chlamydia trachomatis were used as gold standard. In addition, we also compared the clinical approach widely used by clinicians (mainly at hospitals with laboratory results. A total of 439 participants was recruited purposively (230 from E. Java and 209 from N.Sulawesi. In E.Java, the sensitivity, specificity, and predictive value of the syndromic management for vaginal discharge are 31%, 83%, and 59%, respectively, and in N.Sulawesi 49%, 56%, and 40%,respectively. The clinical approach did not show better results. In E.Java the sensitivity, specificity, and positive predictive value are 13%, 89%, and 50%, res­pectively, while in N.Sulawesi they are 42%, 61%, and 39%, respectively. As a conclusion, the current form of syndromic management has little use for STI screening among

  3. SINDROME KID: ABORDAJE INTERDISCIPLINARIO

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    Carla De Negri

    Full Text Available Se presenta el caso clínico, de una niña de 2 años de edad, nacida en el Centro Hospitalario Pereira Rossell, portadora del Síndrome KID. Se trata de una displasia congénita ectodérmica caracterizada por la asociación de queratitis, ictiosis y sordera. Es producida por un desorden autosómico dominante, esporádico. Algunos autores lo refieren asociado a la presencia de alteraciones estructurales de órganos dentarios, del tipo hipoplasia e hipomineralización del esmalte y también a gingivitis y candidiasis a nivel de la mucosa bucal. La intervención oportuna del odontopediatra, integrando el equipo de salud, brinda un aporte importante, en la búsqueda de estrategias terapéuticas adecuadas al paciente y al contexto asistencial. El abordaje de tratamiento en pacientes portadores del Síndrome KID debe ser multidisciplinario, requiriendo en niños, la integración de un equipo de salud con pediatra, dermatólogo, oftalmólogo, otorrinolaringólogo y odontopediatra

  4. Sindrom diabeticheskoy stopy

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    Mikhail Borisovich Antsiferov

    2001-06-01

    Full Text Available Поражения нижних конечностей у больных сахарным диабетом (СД касаются врачей различных специальностей. Это связано с тем, что нарушение углеводного обмена приводит к изменениям периферического кровотока, иннервации, развитию трофических язв, а в ряде случаев к необходимости ампутации конечности. Хроническая гипергликемия утяжеляет течение и усложняет лечение язвенных дефектов другого генеза (посттромбофлебитический синдром, липоидный некробиоз, экзема и др.. Все это определяет необходимость точной диагностики, дифференциации и выбора адекватного лечения в каждом случае развития трофического нарушения кожи нижних конечностей. Синдром диабетической стопы объединяет патологические изменения периферической нервной системы, артериального и микроциркуляторного русла, костно-суставного аппарата, которые представляют непосредственную угрозу развития язвеннонекротических процессов и гангрены стопы. Несмотря на достаточный объем информации по патогенезу, диагностике, методам лечения и профилактики осложнений СД, данные по частоте и исходу поражений нижних конечностей по-прежнему остаются неутешительными. Настоящий обзор освещает современное представление о патогенезе, способах лечения и профилактике развития синдрома диабетической стопы.

  5. A Sindrome de Burnout(SB em docentes do ensino superior de instituições privadas de Santarém, PA

    Directory of Open Access Journals (Sweden)

    Loreni Bruch Dutra

    2016-11-01

    Full Text Available A Sindrome de Burnout implica em diversas consequências sociais e afeta negativamente a qualidade de vida do docente e do trabalho desenvolvido. Compreende as seguintes dimensões: Ilusão pelo trabalho, Desgaste psíquico, Indolência e Culpa. O objetivo deste artigo foi estudar a Síndrome de Burnout (SB em docentes das instituições privadas de ensino superior de Santarém-PA e sua relação com características demográficas, laborais e estilo de vida. Foi realizado estudo transversal com 311 docentes das áreas da saúde, exatas e humanas. Utilizou-se o instrumento autoaplicável, Cuestionario para la Evaluación del Síndrome de Quemarse por el Trabajo-CESQT, e regressão linear múltipla para o estudo de cada uma das quatro dimensões da SB. Os resultados mostraram que tempo de docência e tempo de docência na instituição; qualidade da relação com chefias, colegas e alunos; presença de recursos necessários para o trabalho; desejo de mudar de profissão e percepção de saúde foram algumas das características que estiveram relacionados com as dimensões da SB. Portanto, necessita-se de investimentos em políticas institucionais que visem a melhoria da qualidade de vida do docente nas suas funções laborais e investimentos nas condições de trabalho.

  6. Ogilvie's syndrome (acute colonic pseudo-obstruction): review of the literature and report of 6 additional cases; Sindrome di Ogilvie (pseudo-ostruzione della letteratura acuta del colon): revisione della letteratura e descrizione di 6 nuovi casi

    Energy Technology Data Exchange (ETDEWEB)

    Grassi, Roberto; Cappabianca, Salvatore; Porto, Annamaria; Montemarano, Emilio; De Rosa, Roberto [Napoli Univ., Napoli (Italy). Dipartimento medico-chirurgico di internistica clinica e sperimentale, Sezione scientifica di radiodiagnostica, radioterapia e medicina nucleare; Sacco, Maurizio; Quantarelli, Mario [Ospedale San Gennaro, Napoli (Italy). Servisio di radiodiagnostica; Di Mizio, Roberto [Ospedale S. Massimo, Penne (Italy). Servizio di radiologia

    2005-04-01

    Purpose: Ogilvie's syndrome is defined as an acute pseudo-obstruction of the colon, characterized by the signs, symptoms and radiological pattern of a large-bowel obstruction, but without a detectable organic cause. The aetiology of Ogilvie's syndrome appears to be multifactorial, with a series of possibly interacting pathogenic noxae all resulting in colon inactivity. Our study reports on six cases of Ogilvie's syndrome diagnosed and treated between 1997 and 2002. Materials and methods: From October 1997 to September 2002 we studied six patients affected by pseudo-obstruction of the colon. The pseudo-obstruction was recurrent in two cases. Acute dilatation of the colon without radiologically-detectable organic obstruction was the inclusion criterion for the study. Results: Plain abdominal radiography revealed colon dilatation that extended to the splenic flexure in three patients, to the hepatic flexure in two patients, and confined to the transverse colon in one patient. None of the patients showed air-fluid levels of the small intestine. Conclusion: The most relevant clinical finding in Ogilvie's syndrome is abdominal distension, which arises suddenly, has a progressive course and reaches massive levels. The first-line diagnostic investigation is plain abdominal radiography which shows extreme colon dilatation without air-fluid levels of the small intestine. In three of our patients, conservative therapy alone was able to restore normal conditions within five days; two patients required decompressive colonoscopy, and one patient died from cardio-circulatory arrest after 48 hours. [Italian] Scopo: La sindrome di Ogilvie � definita come una pseudo-ostruzione acuta del colon, con i segni, i sintomi e l'aspetto radiologico di un'occlusione del grosso intestino senza una causa organica riconoscibile. L'eziologia della sindrome di Ogilvie appare multifattoriale, come se l'inerzia del colon fosse la via finale comune verso la

  7. Auto immunity in the Ovarian Resistance Syndrome: research and methodology development; Autoinmunidad en el Sindrome de Resistencia Ovarica: investigacion y desarrollo de metodologia

    Energy Technology Data Exchange (ETDEWEB)

    Oliver, P; Balter, H; Robles, A

    1998-07-01

    The project evaluates, it selects it develops, it optimizes and been worth, analytic methods for the detection and quantification of antibodies antireceptor of FSH, decisive of precocious ovarian flaw for insensibility gonadal: Syndrome of Ovarian Resistance (SRO). The study method involves the competitive inhibition of the union marked FSH with Iodine-125 of membrane receiver. The investigations include the following components of the analysis system: to) membrane Receivers, b) Radiotracers, c) negative and positive control Serums, d) Buffers. The constants of likeness and numbers of receivers are evaluated in the material biological employee by means of graphics of Scatchard. Ace for the control of quality, the study of the maximum capacity of union was selected of the ligature to the receiver, like one of the parameters that bigger information toasts on the performance of the same one. The clinical validation was made by means of the use of isolated immuno-globulines starting from the serum of healthy donors considered as negative power stations and of women with SRO confirmed by studies made in the exterior considered as central positive. All this, provides the development of a sensitive and specific reliable qualitative method for the determination of antibodies antireceptor of FSH of immediate application in the area of the human health in our means. [Spanish] El proyecto evalua, selecciona, desarrolla, optimiza y valida, metodos analiticos para la deteccion y cuantificacion de anticuerpos antireceptor de FSH, determinantes de falla ovarica precoz por insensibilidad gonadal: Sindrome de Resistencia Ovarica (SRO). El metodo de estudio involucra la inhibicion competitiva de la union hFSH marcada con Iodo-125 de receptor de membrana. Las investigaciones incluyen los siguientes componentes del sistema de analisis: a) Receptores de membrana, b) Radiotrazadores, c) Sueros de control negativos y positivos, d) Buffers. Se evaluan las constantes de afinidad y numeros

  8. Down Syndrome = Sindrome de Down.

    Science.gov (United States)

    Pueschel, S. M.; Glasgow, R. E.

    Presented both in English and Spanish, the brochure is primarily concerned with biological and developmental characteristics of the person with Down's syndrome. An emphasis is on the valuable humanizing influence these individuals have on society. Brief sections in the document discuss the delayed developmental aspects of Down's syndrome; the…

  9. Anterior cruciate ligament reconstruction using autologous hamstring single-bundle Rigidfix technique compared with single-bundle Transfix technique

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    Mousavi Hamid

    2012-01-01

    Full Text Available Background: Initial fixation strength is critical for the early post-operative rehabilitation of patients with anterior cruciate ligament (ACL reconstructions. However, even the best femoral fixation devices remain controversial. We compared the results of 2 of the femoral fixation techniques,Rigidfix and Transfix. Materials and Methods: A total of 30 patients with unilateral ACL deficiency were randomly assigned to 1 of 2 groups. In Group A an anatomic single-bundle ACL reconstruction was performed using Rigidfix technique(Mitek, Norwood,MA, Group B were treated by a single bundle using Transfix technique(Arthrex, Naples, FL, USA. For tibial fixation, a bioabsorbable Intrafix interference screw was used for all the groups and the graft was fashioned from the semitendinosus and gracilis tendons in all patients. The patients were subjected to a clinical evaluation, with assessment of the anterior drawer, Lachman′s and the pivot-shift tests. They also completed the International Knee Documentation Committee (IKDC score. Results: At a mean of 14 months (12-17 followup there were no significant differences concerning time between injury and range of movement between the 2 groups. However, the Rigidfix group showed significantly better results for the subjective assessment of knee function ( P = 0.002. The Lachman, anterior drawer, and pivot-shift tests also showed no significant difference between the 2 groups. The IKDC scale showed no significant difference among the groups ( P < 0.001.There was no difference regarding duration of operation and cost of the operation between the 2 groups.On clinical evaluation there was no significant difference between the 2 groups. However, regardless of the technique, all knees were improved by ACL reconstruction compared with their preoperative status. Conclusion: Both techniques can be used for reconstruction of ACL. Other factors, such as psychic profile of the patients should be considered for surgery

  10. Diagnostic imaging in Bouveret's syndrome. A report of two cases; Diagnostico por imagen del sindrome de Bouveret. A proposito de dos casos

    Energy Technology Data Exchange (ETDEWEB)

    Aguirre, I.; Echevarria, J. J.; Vidales, L.; Abaitua, J. M. [Hospital del Galdacano. Vizacaya (Spain)

    2001-07-01

    Bouveret's syndrome is an uncommon disorder that consists of localized obstruction of the pyloroduodenal region caused by the passage of a gallstone through a cholecystoenteric fistula. It is most common in elderly women with a previous history of cholelithiasis. As the clinical signs are nonspecific, radiological studies are of great importance in the attempt to reach an early diagnosis, thus improving the prognosis. We present two patients with a history of cholelithiasis in whom Bouveret's syndrome was diagnosed preoperatively by different imaging techniques. (Author) 8 refs.

  11. Syndrome of low T{sub 3} in patients with thyroid illness; Sindrome de T{sub 3} baja en pacientes con enfermedad de tiroides

    Energy Technology Data Exchange (ETDEWEB)

    Badillo A, V.; Castaneda L, R.; Carrera D, A.A. [Laboratorio de Radioinmunoanalisis, UAZ, 98000 Zacatecas (Mexico)]: vbadillocren@hotmail.com

    2008-07-01

    The euthyroid sick syndrome or non-thyroid systemic illness, described by first time in 1974, is a syndrome characterized by alterations of laboratory of the thyroid tests, being values, normal serics of TSH, together with low thyroxine concentrations (T{sub 4}) and triiodothyronine (T{sub 3}) totals. The more common alteration it is the fall of the concentrations of peripheral T{sub 3} caused by the decrease of the activity 5'-deiodinase and to the deficit of the capacity of fixation of the transporter proteins. In the professional practice it should differ if the changes evidenced in the thyroid hormonal levels are induced by overthrow of the thyroid function or by non-thyroid systemic illnesses. The quantification in the laboratory it makes by means of analytical techniques appropriate and sensitive as the radioimmunoanalysis (RIA) or the immunoradiometric analysis (IRMA). These nuclear analytical techniques are based on the biochemical reaction of the antigen with the antibody where in the radioimmunoanalysis (RIA), an antigen without marking well-known as 'cold' it competes with a labelled antigen with a radioisotope I-125, well-known as 'hot', by the places of union of the antibody, and in the technique of immunoradiometric analysis (IRMA), an antibody without marked is saturated with the 'cold' antigen and the biochemical reaction is completed uniting a 'hot' antibody marked with a radioisotope I-125 this reaction is also known as 'Sandwich', in both techniques the count of the radioactivity will be in function of the concentration of the antigen without marking or 'cold'. This work was carried out in the Laboratory of Radioimmunoanalysis of the Academic Unit of Nuclear studies of the Autonomous University of Zacatecas. They were studied at 813 ambulatory patients that go to be carried out exams like part of a health control, the results that were obtained are the following 103 patients with

  12. ACTUACIÓN DOMICILIARIA EN EL SINDROME DE APNEAS/HIPOPNEAS DURANTE EL SUEÑO (SAHS: DIAGNÓSTICO Y TRATAMIENTO

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    Coma del Corral MJ

    2006-02-01

    ajuste de tratamiento domiciliario, por lo cual, cada unidad de sueño debe establecer su propia estrategia diagnóstico-terapeútica que resulte más costo-efectivaSUMMARYThe recent studies relate the Sleep Apnea/Hipopnea Syndrome (SAHS with cardiovascular morbidity and mortality, and today, we know it is an underdiagnosed disease. This underdiagnostic implies unhealthy and it increases of health care utilization because the patients with SAHS neither diagnostic nor treatment, they are increase health care utilization and they are more absentees work, whereas the Continuous Positive Airway Pressure (CPAP treatment significantly reduces health care utilization. So, we must diagnose and we must treat the patients with SAHS.The nocturnal polysomnography (PSG is still the diagnosis technique considered as "Gold Standard", although in the future, the diagnosis of SAHS will be to do it with simplifies systems with highly sensitivity and with highly specificity. The Respiratory Polygraphy (RP is a useful option for diagnosis of SAHS and the Respiratory Polygraphy and the auto-CPAP system could be makes at home. In this moment, when we find a patient with highly probability to have SAHS, we could make a Respiratory Polygraphy at home for diagnosis of SAHS and then, we could make auto-CPAP for titration the optimum level of CPAP pressure.With this approach, we will reduce the underdiagnostic and the waiting list, and then saving resources. The place of diagnosis will be at home and then the telematic development will aid to modify the diagnostic approach.This approach's success for diagnose of SAHS will be determinate for the patients´s suitable selection, so every sleep unit must set up its diagnostic-treatment approach that results more cost-effective

  13. Experimental techniques; Techniques experimentales

    Energy Technology Data Exchange (ETDEWEB)

    Roussel-Chomaz, P. [GANIL CNRS/IN2P3, CEA/DSM, 14 - Caen (France)

    2007-07-01

    This lecture presents the experimental techniques, developed in the last 10 or 15 years, in order to perform a new class of experiments with exotic nuclei, where the reactions induced by these nuclei allow to get information on their structure. A brief review of the secondary beams production methods will be given, with some examples of facilities in operation or under project. The important developments performed recently on cryogenic targets will be presented. The different detection systems will be reviewed, both the beam detectors before the targets, and the many kind of detectors necessary to detect all outgoing particles after the reaction: magnetic spectrometer for the heavy fragment, detection systems for the target recoil nucleus, {gamma} detectors. Finally, several typical examples of experiments will be detailed, in order to illustrate the use of each detector either alone, or in coincidence with others. (author)

  14. Consequências da síndrome da tensão pré-menstrual na vida da mulher Consequencias de la sindrome de la tension pre-menstrual en la vida de la mujer The consequences of the syndrome of the pre-menstrual tension in the woman's life

    Directory of Open Access Journals (Sweden)

    Clarice H. Muramatsu

    2001-09-01

    Full Text Available Este estudo tem como objetivo identificar as possíveis conseqüências da Síndrome da Tensão Pré-Menstrual na vida da mulher. Através do questionário, identificamos distúrbios relacionados a alterações físicas, emocionais e, como consequências às alterações nos relacionamentos envolvendo filho, marido/ namorado e familiar, assim como no ambiente de trabalho.Este estudio tuvo como objetivo identificar las posibles consequencias de la sindrome de la tensión pre-menstrual en la vida de la mujer. Atraves de un questionário, identificamos disturbios relacionados con alteraciones físicas y emocionales que por vez danãn los relacionamentos envolviendo hijo, marido, enamorado y familiares, asi como en el ambiente de trabajo.This study has as objective to identify the possible consequences of the Syndrome of the Pré-menstrual Tension in the woman's life. Through the questionnaire, we identified disturb related to physical and emotional discomfort and as consequences the alterations in the relationships involving son, husband / boyfriend and family, as well as in the work atmosphere.

  15. Sindrome de regresión caudal

    OpenAIRE

    Maldonado, A.; Pastor, A.; Sorni, A.; Pastor Durán, Xavier; Palomeque,A.

    1995-01-01

    El síndrome de regresión caudal o de agenesia sacra se caracteriza por un déficit funcional de los esfínteres y de la muscultatura de los miembros inferiores. Se suele asociar con otras malformaciones, como son las esqueléticas, genitourinarias y del tracto intestinal. La diabetes mellitus materna es uno de los factores predisponentes más destacados. Aquí se presenta un caso de síndrome de regresión caudal con insufiencia renal secundaria a la uropatía malformativa asociada. Se comentan los d...

  16. Graves Disease And Down Sindrome : Clinical Case

    Directory of Open Access Journals (Sweden)

    Scrinic Olesea

    2015-08-01

    Full Text Available Introduction: Pacients with Down’s syndrome present an increase revalence of autoimune endocrine disorders. We communicate the case of 14 years and 6 months old pacient known with Down syndrome admitted in Endocrinology department with suspicion of hyperthyroidism, the diagnosis being confirmed by hormonal dosage. The particularity of the case consists in: symptomatology onset during puberty, clinical evolution with mild symptoms, without ocular involvement, morphological and functional remission obtained relatively soon after the initiation of antithyroid therapy, lack of posttherapy side effects, favorabile evolution under the “block and replace” therapy

  17. Sindrome disfágica Dysphagic syndrome

    Directory of Open Access Journals (Sweden)

    Ronaldo Mafia Cuenca

    2007-06-01

    Full Text Available INTRODUÇÃO: A disfagia é o principal sintoma das doenças do esôfago e é representada pela dificuldade em deglutir o alimento ingerido no trajeto da orofaringe até o estômago. Ela é queixa comum na prática clínica diária envolvendo várias especialidades na sua investigação. MÉTODOS: Foi realizada revisão atualizada da literatura internacional através do Pubmed (www.pubmed.com e nacional (www.lilacs.br utilizando-se as seguintes palavras-chave: disfagia e transtornos da deglutição. A extensão do tema foi limitado aos seguintes enfoques: etiologia, diagnóstico e exames complementares mais aplicáveis à exploração propedêutica. CONCLUSÃO: Embora a literatura apresente bom entendimento do processo disfágico, no diagnóstico preciso de sua causa há freqüentemente necessidade de múltiplos exames complementares que associados fazem melhor entender o que acomete o paciente e orientará mais adequadamente a conduta a ser tomadaBACKGROUND: Dysphagia is the main symptom of diseases of the esophagus, being manifested by deglutition difficulties, which reaches the oropharynx and stomach pathway. Is a common daily complaint in the clinical practice, involving numerous specialties regarding its investigation. METHODS: An international literature review was made using Pubmed (www.pubmed.com and a national utilizing (www.lilacs.br the following keywords: dysphagia and deglutition disorders. The extension of the subject was limited to the following areas: etiology, diagnosis and complementary exams which were aplicable to exploratory propedeutics. CONCLUSION: Eventhough the literature presents a good understanding of the dysphagic process, the need for multiple complementary exams is frequent during diagnosis, developing a better understanding of what the patient has, adequately orienting which conduct should be taken.

  18. EL SINDROME VESTIBULAR EN EL ADULTO MAYOR

    Directory of Open Access Journals (Sweden)

    Dr. Hamlet Suárez

    2016-11-01

    Full Text Available El vértigo, la inestabilidad y las caídas tienen una incidencia relevante en el adulto mayor, disminuye su calidad de vida y puede ser causa de muerte en esta población. Este artículo describe las presentaciones clínicas y el abordaje de la evaluación de la patología vestibular en este grupo de edad, utilizando diferentes instrumentos para el diagnóstico así como también las reglas generales del tratamiento.

  19. SINDROME DE COLAPSO DE MORDIDA POSTERIOR

    Directory of Open Access Journals (Sweden)

    Paula Alejandra Baldión

    2012-07-01

    El objetivo del artículo es describir la manera como evoluciona la enfermedad, la evaluación multidisciplinaria para obtener un diagnóstico preciso y la secuencia de tratamiento integral, revisando los conceptos para un mejor entendimiento del tratamiento periodontal y restaurativo que requieren los pacientes con síndrome de colapso de mordida posterior; caracterizado por procesos patológicos como enfermedad periodontal, caries dental con subsecuente alteración de la integridad del arco dentario que genera perdida de soporte posterior conllevando a un trauma oclusal secundario y disminución de la dimensión vertical oclusal. El control del proceso inflamatorio y la estabilización periodontal son puntos de partida indispensables en el tratamiento integral del paciente. La migración patológica de los dientes y las alteraciones del plano oclusal pueden exigir la corrección ortodóntica de los arcos y en algunos casos el concurso de cirugía oral para la nivelación del plano oclusal. La secuencia organizada del tratamiento por fases permite la restauración predecible de los pacientes con este síndrome, tomando en cuenta las diferentes alternativas protésicas tanto removibles como fijas con o sin implantes de oseointegración, para el éxito integral a largo plazo.

  20. Churg Strauss syndrome; Sindrome de Churg Strauss

    Energy Technology Data Exchange (ETDEWEB)

    Lopez Rengifo, Diana Milena; Contreras Zuniga, Eduardo; Osio, Luis Fernando

    2007-07-01

    The Churg-Strauss syndrome, also called allergic granulomatosis and angiitis, is a multisystem disorder characterized by allergic rhinitis, asthma, and prominent peripheral blood eosinophilia. The most common organ involved is the lung, followed by the skin. The Churg-Strauss syndrome, however, can affect any organ system, including the cardiovascular, gastrointestinal, renal, and central nervous systems.

  1. SINDROME DE COLAPSO DE MORDIDA POSTERIOR

    Directory of Open Access Journals (Sweden)

    Paula Alejandra Baldión

    2012-12-01

    Full Text Available El Síndrome de Colapso de Mordida posterior es una patología oclusal que se presenta como consecuencia de problemas dentales, periodontales y oclusales, que exige la correcta evaluación de los signos y síntomas que lo caracterizan.  El objetivo del artículo es describir la manera como evoluciona la enfermedad, la evaluación multidisciplinaria para obtener un diagnóstico preciso y la secuencia de tratamiento integral, revisando los conceptos para un mejor entendimiento del tratamiento periodontal y restaurativo que requieren los pacientes con síndrome de colapso de mordida posterior; caracterizado por procesos patológicos como enfermedad periodontal, caries dental con subsecuente alteración de la integridad del arco dentario que genera perdida de soporte posterior conllevando a un trauma oclusal secundario y disminución de la dimensión vertical oclusal. El control del proceso inflamatorio y la estabilización periodontal son puntos de partida indispensables en el tratamiento integral del paciente. La migración patológica de los dientes y las alteraciones del plano oclusal pueden exigir la corrección ortodóntica de los arcos y en algunos casos el concurso de cirugía oral para la nivelación del plano oclusal. La secuencia organizada del tratamiento por fases permite la restauración predecible de los pacientes con este síndrome, tomando en cuenta las diferentes alternativas protésicas tanto removibles como fijas con o sin implantes de oseointegración, para el éxito integral a largo plazo.

  2. Abordagem neurologica na sindrome do X fragil

    OpenAIRE

    Marilisa Mantovani Guerreiro

    1993-01-01

    Resumo: Com o propósito de realizar a abordagem neurológica na Síndrome do X Frágil (SXF), estudaram-se 11 pacientes com este diagnóstico citogenético. A idade variou de 8 a 19 anos. Nove pacientes eram do sexo masculino e dois do feminino. Todos os indivíduos apresentaram pavilhões auriculares grandes e faces alongadas. Observou-se fronte proeminente em 63% dos casos e macrorquidia em 33% dentre aqueles do sexo masculino. Atraso na aquisição da fala, fala repetitiva, perseverativa, impulsiva...

  3. Sindromes Dolorosos Regionales, Columna, Hombro y Rodilla

    Directory of Open Access Journals (Sweden)

    Wolff C. Verónica, Dra.

    2012-07-01

    En la rodilla, los trastornos periarticulares incluyen bursitis y tendinitis de distintas estructuras, y hay que considerar la osteonecrosis dentro del diagnóstico diferencial del dolor de rodilla del adulto mayor.

  4. Dismantling techniques

    International Nuclear Information System (INIS)

    Wiese, E.

    1998-01-01

    Most of the dismantling techniques used in a Decontamination and Dismantlement (D and D) project are taken from conventional demolition practices. Some modifications to the techniques are made to limit exposure to the workers or to lessen the spread of contamination to the work area. When working on a D and D project, it is best to keep the dismantling techniques and tools as simple as possible. The workers will be more efficient and safer using techniques that are familiar to them. Prior experience with the technique or use of mock-ups is the best way to keep workers safe and to keep the project on schedule

  5. Dismantling techniques

    Energy Technology Data Exchange (ETDEWEB)

    Wiese, E.

    1998-03-13

    Most of the dismantling techniques used in a Decontamination and Dismantlement (D and D) project are taken from conventional demolition practices. Some modifications to the techniques are made to limit exposure to the workers or to lessen the spread of contamination to the work area. When working on a D and D project, it is best to keep the dismantling techniques and tools as simple as possible. The workers will be more efficient and safer using techniques that are familiar to them. Prior experience with the technique or use of mock-ups is the best way to keep workers safe and to keep the project on schedule.

  6. Translation Techniques

    OpenAIRE

    Marcia Pinheiro

    2015-01-01

    In this paper, we discuss three translation techniques: literal, cultural, and artistic. Literal translation is a well-known technique, which means that it is quite easy to find sources on the topic. Cultural and artistic translation may be new terms. Whilst cultural translation focuses on matching contexts, artistic translation focuses on matching reactions. Because literal translation matches only words, it is not hard to find situations in which we should not use this technique.  Because a...

  7. Diagnostic techniques

    International Nuclear Information System (INIS)

    Berquist, T.H.; Bender, C.E.; James, E.M.; Brown, M.L.; McLeod, R.A.; Broderick, D.F.; Welch, T.J.

    1989-01-01

    Proper application of imaging procedures is essential to obtain needed information for diagnosis and therapy planning in patients with suspected foot and/or ankle pathology. This paper provides basic background data for the numerous imaging techniques

  8. Sindromes endocrinos autoinmunes: cuándo sospechar y estudiar un sindrome poliglandular (SPG)

    OpenAIRE

    B. María Carolina Letelier, Dra.

    2013-01-01

    Los síndromes poliglandulares autoinmunes comprenden un amplio espectro de trastornos endocrinos. Estos síndromes incluyen trastornos monogénicos como el síndrome poliglandular tipo 1 (tipo juvenil) y trastornos genéticos complejos como el síndrome poliglandular tipo 2 (tipo adulto). Estos trastornos se basan en la presencia de infiltración linfocitaria de la glándula afectada, anticuerpos órgano-específico en sangre, defectos en la inmunidad celular y asociación con los genes de los antígeno...

  9. Decomposition techniques

    Science.gov (United States)

    Chao, T.T.; Sanzolone, R.F.

    1992-01-01

    Sample decomposition is a fundamental and integral step in the procedure of geochemical analysis. It is often the limiting factor to sample throughput, especially with the recent application of the fast and modern multi-element measurement instrumentation. The complexity of geological materials makes it necessary to choose the sample decomposition technique that is compatible with the specific objective of the analysis. When selecting a decomposition technique, consideration should be given to the chemical and mineralogical characteristics of the sample, elements to be determined, precision and accuracy requirements, sample throughput, technical capability of personnel, and time constraints. This paper addresses these concerns and discusses the attributes and limitations of many techniques of sample decomposition along with examples of their application to geochemical analysis. The chemical properties of reagents as to their function as decomposition agents are also reviewed. The section on acid dissolution techniques addresses the various inorganic acids that are used individually or in combination in both open and closed systems. Fluxes used in sample fusion are discussed. The promising microwave-oven technology and the emerging field of automation are also examined. A section on applications highlights the use of decomposition techniques for the determination of Au, platinum group elements (PGEs), Hg, U, hydride-forming elements, rare earth elements (REEs), and multi-elements in geological materials. Partial dissolution techniques used for geochemical exploration which have been treated in detail elsewhere are not discussed here; nor are fire-assaying for noble metals and decomposition techniques for X-ray fluorescence or nuclear methods be discussed. ?? 1992.

  10. Neutron techniques

    International Nuclear Information System (INIS)

    Charlton, J.S.

    1986-01-01

    The way in which neutrons interact with matter such as slowing-down, diffusion, neutron absorption and moderation are described. The use of neutron techniques in industry, in moisture gages, level and interface measurements, the detection of blockages, boron analysis in ore feedstock and industrial radiography are discussed. (author)

  11. Freqüência da mutação gene da síndrome do estresse suíno e sua associação com características reprodutivas em marrãs híbridas Frequency of the porcine stress sindrome gene mutation and its association with reproductive traits in crossbred gilts

    Directory of Open Access Journals (Sweden)

    Simone Eliza Facioni Guimarães

    1999-01-01

    Full Text Available O objetivo deste trabalho foi determinar a freqüência do gene causador da síndrome do estresse em suíno (PSS e sua associação com características reprodutivas em marrãs híbridas. Setenta e duas marrãs híbridas Landrace x Large White, provenientes de granjas comerciais localizadas na região de Ponte Nova - Minas Gerais, foram analisadas para a presença da mutação PSS. No diagnóstico da mutação feito por reação em cadeia da polimerase - polimorfismo de comprimento de fragmentos de restrição (PCR-RFLP, o fragmento de 659pb do gene ryr-1 foi amplificado e, nos mutantes a substituição de citosina por timina, que acarreta mudança de aminoácidos da proteína madura de arginina para cisteína nos animais afetados, foi identificado. Dados relativos ao número de leitões nascidos vivos, leitões nascidos com baixa viabilidade e leitões natimortos por leitegada, peso médio dos leitões ao nascer e repetições de cio foram analisados. Do total de marrãs analisadas, foram encontradas 13,88% de marrãs heterozigotas e nenhuma homozigota recessiva. Não houve efeito dos genótipos sobre as características analisadas.The objective of this work was to determine the frequency of the porcine stress sindrome (PSS gene mutation and its association with reproductive traits in crossbred gilts. Seventy two crossbred Landrace x Large White females from commercial farms of Ponte Nova region location - Minas Gerais State, were analyzed for the PSS mutation. The mutation diagnose was made by polimerase chain reaction - restriction fragment length polimorphism, where the 659pb fragment from the ryr-1 gene was amplifyied, and in the mutants the substitution of cytosine by thimine, that leads to the change in the mature protein amino acids from arginine to cysteine in the affected animals, was identified. Data relative to the number of piglets born alive, born alive with low viability and dead piglets per litter, average piglets born weight and

  12. Astrophysical techniques

    CERN Document Server

    Kitchin, CR

    2013-01-01

    DetectorsOptical DetectionRadio and Microwave DetectionX-Ray and Gamma-Ray DetectionCosmic Ray DetectorsNeutrino DetectorsGravitational Radiation Dark Matter and Dark Energy Detection ImagingThe Inverse ProblemPhotographyElectronic ImagingScanningInterferometrySpeckle InterferometryOccultationsRadarElectronic ImagesPhotometryPhotometryPhotometersSpectroscopySpectroscopy SpectroscopesOther TechniquesAstrometryPolarimetrySolar StudiesMagnetometryComputers and The Internet.

  13. Presentation Technique

    International Nuclear Information System (INIS)

    Froejmark, M.

    1992-10-01

    The report presents a wide, easily understandable description of presentation technique and man-machine communication. General fundamentals for the man-machine interface are illustrated, and the factors that affect the interface are described. A model is presented for describing the operators work situation, based on three different levels in the operators behaviour. The operator reacts routinely in the face of simple, known problems, and reacts in accordance with predetermined plans in the face of more complex, recognizable problems. Deep fundamental knowledge is necessary for truly complex questions. Today's technical status and future development have been studied. In the future, the operator interface will be based on standard software. Functions such as zooming, integration of video pictures, and sound reproduction will become common. Video walls may be expected to come into use in situations in which several persons simultaneously need access to the same information. A summary of the fundamental rules for the design of good picture ergonomics and design requirements for control rooms are included in the report. In conclusion, the report describes a presentation technique within the Distribution Automation and Demand Side Management area and analyses the know-how requirements within Vattenfall. If different systems are integrated, such as geographical information systems and operation monitoring systems, strict demands are made on the expertise of the users for achieving a user-friendly technique which is matched to the needs of the human being. (3 figs.)

  14. Astrophysical techniques

    Energy Technology Data Exchange (ETDEWEB)

    Kitchin, C R

    1984-01-01

    The subject is covered in chapters, entitled: detectors (optical and infrared detection; radio and microwave detection; X-ray and gamma-ray detection; cosmic ray detectors; neutrino detectors; gravitational radiation); imaging (photography; electronic imaging; scanning; interferometry; speckle interferometry; occultations; radar); photometry and photometers; spectroscopy and spectroscopes; other techniques (astrometry; polarimetry; solar studies; magnetometry). Appendices: magnitudes and spectral types of bright stars; north polar sequence; standard stars for the UBV photometric system; standard stars for the UVBY photometric system; standard stars for MK spectral types; standard stars for polarimetry; Julian date; catalogues; answers to the exercises.

  15. Llizarov technique

    International Nuclear Information System (INIS)

    Shankman, S.; Rosenberg, Z.S.; Frankel, V.; Golyakhovsky, V.

    1990-01-01

    This paper illustrates the radiographic manifestations of the Ilizarov distraction technique for the correction of short and deformed limbs. The radiographs of 130 patients who underwent Ilizarov distraction at 160 sites since December 1986 were reviewed retrospectively. Reasons for correction included fracture nonunion and malunion idiopathic leg length discrepancy, achondroplasia, and neurofibromatosis with tibial pseudarthrosis. Ninety patients were adults, and 40 were children. In order to assess cortical bone development during the fixation phase, CT of the regenerate bone was performed in 17 patients. Conventional tomograms were obtained in 20 patients for the evaluation of delayed or hypoplastic union at the distraction site

  16. Experimental Techniques

    International Nuclear Information System (INIS)

    Fournier, D.; Serin, L.

    1995-01-01

    Experimental techniques to be used in the new generation of high energy physics are presented. The emphasis is put on the new ATLAS and CMS detectors for the CERN LHC. For the most important elements of these detectors, a description of the underlying physics processes is given, sometimes with reference to comparable detectors used in the past. Some comparative global performances of the two detectors are also given, with reference to benchmark physics processes (detection of the Higgs boson in various mass regions, etc). (author)

  17. Industrial technique

    International Nuclear Information System (INIS)

    Robertson, D.H.

    1975-01-01

    Techniques for selectively extracting and storing only krypton and xenon in the waste gases that are released from a pressurized water nuclear power reactor are described. The illustrative fluorocarbon absorption system has three separation stages: an initial gas-fluorocarbon absorber, a flash chamber and fractionator for segregating all of the absorbed gases from the loaded absorber stage fluorocarbon (save for the krypton and xenon), and a stripper that receives the partially loaded fluorocarbon liquid directly from the fractionator in order to separate only the krypton and xenon. A molecular sieve filter dries the input process gas, a cartridge type solvent filter is used to remove radiation degradation products from the loaded liquid that flows from the absorber, a cold trap gas drier is provided to remove residual solvent vapor from the separated krypton and xenon, and radiation detectors automatically activate valves to establish safe conditions in the event of an accident or plant failure. (U.S.)

  18. Experimental techniques

    International Nuclear Information System (INIS)

    Roussel-Chomaz, P.

    2007-01-01

    This lecture presents the experimental techniques, developed in the last 10 or 15 years, in order to perform a new class of experiments with exotic nuclei, where the reactions induced by these nuclei allow to get information on their structure. A brief review of the secondary beams production methods will be given, with some examples of facilities in operation or under project. The important developments performed recently on cryogenic targets will be presented. The different detection systems will be reviewed, both the beam detectors before the targets, and the many kind of detectors necessary to detect all outgoing particles after the reaction: magnetic spectrometer for the heavy fragment, detection systems for the target recoil nucleus, γ detectors. Finally, several typical examples of experiments will be detailed, in order to illustrate the use of each detector either alone, or in coincidence with others. (author)

  19. Combinatorial techniques

    CERN Document Server

    Sane, Sharad S

    2013-01-01

    This is a basic text on combinatorics that deals with all the three aspects of the discipline: tricks, techniques and theory, and attempts to blend them. The book has several distinctive features. Probability and random variables with their interconnections to permutations are discussed. The theme of parity has been specially included and it covers applications ranging from solving the Nim game to the quadratic reciprocity law. Chapters related to geometry include triangulations and Sperner's theorem, classification of regular polytopes, tilings and an introduction to the Eulcidean Ramsey theory. Material on group actions covers Sylow theory, automorphism groups and a classification of finite subgroups of orthogonal groups. All chapters have a large number of exercises with varying degrees of difficulty, ranging from material suitable for Mathematical Olympiads to research.

  20. Industrial technique

    International Nuclear Information System (INIS)

    Jabsen, F.S.

    1975-01-01

    An illustrative embodiment of the invention discloses a technique for disassembling a nuclear reactor fuel element without destroying the individual fuel pins and other structural components from which the element is assembled. A traveling bridge and trolley that span a water-filled spent fuel storage pool support a strongback. The strongback is under water and provides a working surface on which the spent fuel element is placed for inspection and for the manipulation that is associated with disassembly and assembly. To remove, in a non-destructive manner, the grids that hold the fuel pins in the proper relative positions within the element, bars are inserted through apertures in the grids with the aid of special tools. These bars are rotated to flex the adjacent grid walls and, in this way relax the physical engagement between protruding portions of the grid walls and the associated fuel pins. With the grid structure so flexed to relax the physical grip on the individual fuel pins, these pins can be withdrawn for inspection or replacement as necessary without imposing a need to destroy fuel element components. (U.S.)

  1. Techniques de combustion Combustin Techniques

    Directory of Open Access Journals (Sweden)

    Perthuis E.

    2006-11-01

    Full Text Available L'efficacité d'un processus de chauffage par flamme est étroitement liée à la maîtrise des techniques de combustion. Le brûleur, organe essentiel de l'équipement de chauffe, doit d'une part assurer une combustion complète pour utiliser au mieux l'énergie potentielle du combustible et, d'autre part, provoquer dans le foyer les conditions aérodynamiques les plus propices oux transferts de chaleur. En s'appuyant sur les études expérimentales effectuées à la Fondation de Recherches Internationales sur les Flammes (FRIF, au Groupe d'Étude des Flammes de Gaz Naturel (GEFGN et à l'Institut Français du Pétrole (IFP et sur des réalisations industrielles, on présente les propriétés essentielles des flammes de diffusion aux combustibles liquides et gazeux obtenues avec ou sans mise en rotation des fluides, et leurs répercussions sur les transferts thermiques. La recherche des températures de combustion élevées conduit à envisager la marche à excès d'air réduit, le réchauffage de l'air ou son enrichissement à l'oxygène. Par quelques exemples, on évoque l'influence de ces paramètres d'exploitation sur l'économie possible en combustible. The efficiency of a flame heating process is closely linked ta the mastery of, combustion techniques. The burner, an essential element in any heating equipment, must provide complete combustion sa as to make optimum use of the potential energy in the fuel while, at the same time, creating the most suitable conditions for heat transfers in the combustion chamber. On the basis of experimental research performed by FRIF, GEFGN and IFP and of industrial achievements, this article describesthe essential properties of diffusion flames fed by liquid and gaseous fuels and produced with or without fluid swirling, and the effects of such flames on heat transfers. The search for high combustion temperatures means that consideration must be given to operating with reduced excess air, heating the air or

  2. Rendu-Osler-Weber syndrome: what radiologists should know. Literature review and three cases report; Sindrome de Rendu-Osler-Weber: o que o radiologista precisa saber: revisao da literatura e apresentacao de tres casos

    Energy Technology Data Exchange (ETDEWEB)

    Agnollitto, Paulo Moraes; Barreto, Andre Rodrigues Facanha; Barbieri, Raul Fernando Pinsetta; Junior, Jorge Elias; Muglia, Valdair Francisco, E-mail: agno53@gmail.com [Universidade de Sao Paulo (HC/FMRP/USP), Ribeirao Preto, SP (Brazil). Fac. de Medicina. Hospital das Clinicas

    2013-05-15

    Rendu-Osler-Weber syndrome or hereditary hemorrhagic telangiectasia is an autosomal dominant vascular disease involving multiple systems whose main pathological change is the presence of abnormal arteriovenous communications. Most common symptoms include skin and mucosal telangiectasias, epistaxis, gastrointestinal, pulmonary and intracerebral bleeding. The key imaging finding is the presence of visceral arteriovenous malformations. The diagnosis is based on clinical criteria and can be confirmed by molecular biology techniques. Treatment includes measures for management of epistaxis, as well as surgical excision, radiotherapy and embolization of arteriovenous malformations, with emphasis on endovascular treatment. The present pictorial essay includes a report of three typical cases of this entity and a literature review. (author)

  3. Sindrome de Vogt-Koyanagi-Harada: relato de um caso

    Directory of Open Access Journals (Sweden)

    José Geraldo Camargo Lima

    1978-03-01

    Full Text Available É relatado um caso de síndrome de Vogt-Koyanagi-Harada que se iniciou por um quadro oftálmico inicialmente unilateral e, depois, bilateral. Um mês após o início da doença manifestou-se um quadro psiquiátrico tipo mania com fugas de idéias, euforia e diminuição do senso crítico. As alterações encontradas nos eletrencefalogramas e exames de líquido cefalorraqueano são analisadas. O caso foi seguido durante três anos e meio e apesar de ter sido submetido a corticoterapia teve má evolução do ponto de vista oftalmológico. Do ponto de vista psiquiátrico evoluiu bem. não restando sequela alguma.

  4. Sindrome de Vogt-Koyanagi-Harada: relato de dois casos

    Directory of Open Access Journals (Sweden)

    Paulo E. Marchiori

    1981-12-01

    Full Text Available Os autores relatam a síndrome de Vogt-Koyanagi-Harada em duas mulheres adultas e de cor parda. São discutidos os aspectos clínicos, epidemiológicos, heredofamiliares e imunológicos.

  5. Zollinger-Ellison syndrome; Sindrome de Zollinger-Ellison

    Energy Technology Data Exchange (ETDEWEB)

    Muraro, Cirilo Luiz de Pardo Meo; Cunha, Hercio Azevedo de Vasconcelos; Freitas Junior, Carlos Eduardo de [Pontificia Univ. Catolica de Campinas, SP (Brazil). Faculdade de Ciencias Medicas. Hospital e Maternidade Celso Pierro

    2000-12-01

    The authors report a 49 years old, female patient who have been operated on several times (antrectomy with Billroth II reconstruction, partial gastrectomy with troncular vagotomy and total gastrectomy) in the last 5 years for recurrent ulcer disease. Three months ago, an abdomen ultra sound was done showing multiples images that suggested liver metastasis, which was confirmed by CT and MR. Two months ago, one new abdomen CT specifically to pancreas was done showing an expansive process in pancreas. Serial gastrine was 1532 pg/ml at the time (reference - until 115) and among clinical history and images exams Zollinger-Ellison Syndrome was suggested, a rare disease case. (author)

  6. Noonan syndrome and chylothorax; Sindrome de Noonan y quilotorax

    Energy Technology Data Exchange (ETDEWEB)

    Martinez-Leon, M. I.; Ceres-Ruiz, L.; Solbes-Vila, R.; Valls-Moreno, E. [Hospital Infantil del C.H.U. Carlos Haya. Malaga (Spain)

    2001-07-01

    Chylothorax during childhood usually develops as a result of posto-perative complications following cardiothoracic surgery. It is rarely due to the malformations of the lymphatic system associated with dysmorphic syndrome. We report two cases of Noonan syndrome involving neonatal development of chylothorax. In children with the Noonan phenotype who develop pleural effusion during the neonatal period in the absence of obstetric trauma, it is advisable to rule out the presence of congenital lymphatic malformation and study the pleural effusion, initially introducing conservative treatment with dietary therapy. Chest radiography, ultrasound and computed tomography reveal the presence of the pleural effusion and parenchymal pattern compatible with chloroethoxy and lymphangiectasis. (Author) 15 refs.

  7. EPR - spektroskopiya pri ozhirenii i metabolicheskom sindrome u zhenshchin

    Directory of Open Access Journals (Sweden)

    A G Maksina

    2001-03-01

    Full Text Available Цель. Исследовать изменения в структуре мембран эритроцитов крови при ожирении в сочетании с другими нарушениями, характерными для метаболического синдрома. Материалы и методы. Обследованы 42 пациентки в возрасте от 23 до 50 лет с избыточной массой тела и ожирением и контрольная группа (12 женщин с применением метода спинового зонда. Результаты. У пациенток и избытком массы тела и ожирением показатель мембранной упорядоченности фосфолипидов был выше, чем в контроле. . Изменение параметра S в цельной крови и сыворотке более выражено по сравнению с таковым в эритроцитах. При ожирении с сопутствующей артериальной гипертензией параметр упорядоченности достоверно выше (р

  8. LA SINDROME OSSESSIVA SPAZIO-TEMPORALE DEGLI ITALIANI

    African Journals Online (AJOL)

    User

    “Spazio e tempo sono maledizioni che gravano sulla terra”. La citazione è tratta dall'opera Trunkene Flut del 1949, tradotta in italiano con il titolo Flutto ebbro (a cura di A.M. Carpi, Guanda, Parma, 1989). Il pessimismo è una delle caratteristiche principali di Gottfried Benn (1886-1956), medico di professione, autore anche ...

  9. SINDROME DE BURNOUT E SUAS CONSEQUENCIAS NOS PROFISSIONAIS DE ENFERMAGEM

    Directory of Open Access Journals (Sweden)

    Clecilene Gomes CARVALHO

    2011-01-01

    Full Text Available Burnout is an English word that refers to something that crashed from exhaustion. It is a problem that affects service professionals, particularly those facing care activities with others, in which the provision of care or service often occurs in situations of emotional changes. The syndrome takes a multidimensional concept, whosemanifestation is characterized by emotional exhaustion, reduced personal accomplishment and depersonalization of the other. Taking into consideration that nurses, technicians and nursing assistants, are a great group with a predisposition to develop the syndrome because they are health professionals who spend more time in contact with the patient and their family members within the work environment emotional situations of constant change, we performed abibliographic review in order to gather information on key risk factors that favor the onset of the Burnout syndrome and its consequences for the individual, organization and society. This work will serve as a subsidy for reflection and discussion, both the professionals involved, as future managers and professionals.

  10. Aplicacion de la ozonoterapia en el sindrome cocleovestibular

    OpenAIRE

    Alejandro del Cerro; Silvia Menéndez; Tania Alvarez

    2010-01-01

    Se les llama síndromes cócleo-vestibulares a un grupo de afecciones caracterizadas por alteraciones de la audición y del equilibrio. Son motivos frecuentes de consulta médica y de elevado ausentismo laboral. El vértigo es el síntoma principal, aunque la hipoacusia, los acúfenos, el dolor y la sensación de humedad pueden estar presentes. Esta afección tiene una importante prevalencia y representa un alto costo económico, debido a la gama de medicamentos utilizados y prolongados tratamientos qu...

  11. [Polycystic ovary sindrome: impact on reproductive and material fetal health].

    Science.gov (United States)

    Fux Otta, Carolina; Iraci, Gabriel Santino; Szafryk de Mereshian, Paula; Fiol de Cuneo, Marta

    2016-01-01

    Polycystic ovary syndrome (PCOS) is characterized by hyperandrogenism (H), oligo-anovulation (O) and / or polycystic ovaries (P). There is currently little information on perinatal complications. to investigate obstetric and neonatal characteristics of women with PCOS in our population. we studied 87 pregnant women with PCOS (categorized in four phenotypes according Rotterdam Consensus: A (H + O + P) n = 53; B (H + O) n = 9; C (H + P) n = 16 and D (O + P) n = 9) and 96 without PCOS (control). We analyzed clinical and biochemical features (age, anthropometry hirsutism, acanthosis nigricans, OGTT, insulin, lipid profile, androgen and gonadotropins) during preconception, (weight gain, blood pressure, OGTT) through gestation and occurrence of perinatal complications. we found no differences in age (29.4 ± 4 and 28.7 ± 5 years) and body mass index (28.2 ± 6 and 27.8 ± 6 kg / m2) in both groups; while patients with PCOS had higher waist circumference, blood pressure and acanthosis nigricans versus control. Despite similar weight gain, patients with PCOS had higher percentage of perinatal complications. In the A phenotype RR for perinatal adverse outcomes was 2.37 (95%CI: 1.67-3.36, p <0.001). The HOMA-IR index preconception and fasting glucose during pregnancy were the predictors for these complications (p=0.01). patients with PCOS have a higher risk for complications during pregnancy and newborns more frequently have low weight or macrosomy. A careful history can recognize patients with higher perinatal risk to develop complications.

  12. SINDROME DE SILVER-RUSSELL, REPORTE DE UN CASO

    Directory of Open Access Journals (Sweden)

    Ángela Liliana Grandas Ramírez

    2012-07-01

    Full Text Available El síndrome Silver-Russell es un desorden genético (hipometilación en la región centro 1 (ICR1 del  IGF2 /H19  locus 11p15 y clínicamente heterogéneo, caracterizado por retardo del crecimiento intrauterino, baja talla y peso, y perímetro cefálico normal. Su tratamiento se basa en la  hormona del crecimiento. Se presenta el caso de una niña de 5 años que ingresa al servicio de Estomatología Pediátrica de la Fundación HOMI Hospital de la Misericordia de Bogotá, con antecedente de retardo del crecimiento intrauterino, manejada con dieta rica en carbohidratos y uso de biberón hasta los 2 y medio años, Al examen talla 88 cm y peso 9 Kg,  cara forma triangular, frente prominente, micrognatismo mandibular, apiñamiento dental y caries de la infancia temprana. Se diagnostica con retardo de la edad ósea, dental y morfológica. El tratamiento programa individual riesgo de caries y proveer una alta calidad de salud oral.

  13. Sindrom metaboličke inzulinske rezistencije i metabolizam ugljikohidrata

    OpenAIRE

    Metelko, Željko; Crkvenčić, Neva

    2004-01-01

    Stanje metaboličke inzulinske rezistencije jest nemogućnost ostvarenja biološkog učinka inzulina u koncentracijama koje su učinkovite u zdravih osoba. Utjecaj se primjećuje na metabolizmu glukoze, metabolizmu lipida, funkciji krvnih žila i trombocita te regulaciji autonomnoga živčanog sustava. Fizička neaktivnost, nepravilna prehrana i sedentarni način života značajno pridonose razvoju pretilosti, metaboličke inzulinske rezistencije i tipa 2 šećerne bolesti. Metaboličk...

  14. Ejercicio, Obesidad y Sindrome Metabólico

    Directory of Open Access Journals (Sweden)

    A. Carlos Jorquera, Nut. Msc

    2012-05-01

    Full Text Available Los bajos niveles de actividad física y/o ejercicio, junto a los malos hábitos alimentarios presentes a nivel nacional e internacional, han traído consigo una serie de complicaciones y/o morbilidades que han provocado un importante aumento de las tasas de mortalidad por enfermedades adquiridas, muchas de ellas ligadas a esta malnutrición por exceso y sedentarismo, descritos en encuestas nacionales e internacionales. La falta de movimiento es extrema en la población chilena y mundial, cada día la industria desarrolla elementos que buscan disminuir la ejecución de ejercicio físico, lo que se refleja de cierta manera en las encuestas ejecutadas, donde las tasas de inactividad física son elevadísimas, tanto en adultos como en niños, ya sean estos hombres o mujeres. Esto, sumado a los elevados niveles de obesidad, hace que enfoquemos nuestra atención al desarrollo de un tratamiento que combata estos dos factores de riesgo de manera paralela, pues en la ecuación de Balance Energético un 50% de ella corresponde a la ingesta y un 50% al gasto de energía. Los elevados niveles de sobrepeso y obesidad de nuestra realidad chilena (60% de la población, son la evidencia de un balance energético positivo provocado por una mayor ingesta de alimentos y un menor gasto en actividad física lo que ha llevado a que aumente progresivamente el Síndrome Metabólico y las ECNT en nuestra población.

  15. Churg-Strauss syndrome; Sindrome de Churg Strauss

    Energy Technology Data Exchange (ETDEWEB)

    Ayala, Jose Javier; Velasquez, Juan Carlos

    2005-07-01

    Churg-Strauss Syndrome was described in 1951 and it is characterized by asthma, fever, hypereosinophilia and vasculitis. In 1990, following the discussion of several proposals for its classification, the American College of Rheumatology established its diagnostic criteria. A 55 year-old female patient was seen recently at the Military Hospital in Bogota, Colombia, with leucocytoclastic vasculitis, wheezing, pulmonary infiltrates and hypereosinophilia, who met all the criteria to be classified as a Churg-Strauss patient.

  16. Syndrome of Churg Strauss; Sindrome de Churg Strauss

    Energy Technology Data Exchange (ETDEWEB)

    Sanchez Morales, Edgar Alberto; Saavedra Rodriguez, Alfredo; Henao Riveros, Sandra

    2002-09-01

    The Churg-Strauss syndrome denominated allergic granulomatosis and angeitis is characterized by a systemic vasculitis of small glasses, extravascular granulomas and hypereosinophilia. Initially described by Jacob Churg and Lotte Strauss, two pathologists who in 1951 they published the description of 13 patient postmortem with tisular infiltration for eosinophils, necrotizant vasculitis and extravascular granulomas. The paper includes nomenclature, classification approaches, pathogenesis, pathology, and clinical aspects and diagnostic.

  17. SINDROMES HEREDITARIOS QUE PREDISPONEN AL DESARROLLO DEL CANCER COLORRECTAL

    Directory of Open Access Journals (Sweden)

    Dr. Benedito Mauro Rossi

    2017-07-01

    En ambos síndromes, el estudio genético de los pacientes permite en altos porcentajes identificar las mutaciones causantes. En base a estos resultados, se pueden identificar los familiares portadores de mutaciones, y ofrecerles los esquemas de vigilancia y eventuales tratamientos profilácticos correspondientes a su enfermedad. Para el manejo integral de estas familias es esencial contar con un equipo multidisciplinario, para poder ofrecer consejería genética, estudio genético, educación a las familias y tratamiento respectivo en forma adecuada.

  18. SINDROME DE SILVER-RUSSELL, REPORTE DE UN CASO

    Directory of Open Access Journals (Sweden)

    Ángela Liliana Grandas Ramírez

    2012-12-01

    Full Text Available El síndrome Silver-Russell es un desorden genético (hipometilación en la región centro 1 (ICR1 del  IGF2 /H19  locus 11p15 y clínicamente heterogéneo, caracterizado por retardo del crecimiento intrauterino, baja talla y peso, y perímetro cefálico normal. Su tratamiento se basa en la  hormona del crecimiento. Se presenta el caso de una niña de 5 años que ingresa al servicio de Estomatología Pediátrica de la Fundación HOMI Hospital de la Misericordia de Bogotá, con antecedente de retardo del crecimiento intrauterino, manejada con dieta rica en carbohidratos y uso de biberón hasta los 2 y medio años, Al examen talla 88 cm y peso 9 Kg,  cara forma triangular, frente prominente, micrognatismo mandibular, apiñamiento dental y caries de la infancia temprana. Se diagnostica con retardo de la edad ósea, dental y morfológica. El tratamiento programa individual riesgo de caries y proveer una alta calidad de salud oral.

  19. Cogeneration techniques; Les techniques de cogeneration

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-10-01

    This dossier about cogeneration techniques comprises 12 parts dealing successively with: the advantages of cogeneration (examples of installations, electrical and thermal efficiency); the combustion turbine (principle, performances, types); the alternative internal combustion engines (principle, types, rotation speed, comparative performances); the different configurations of cogeneration installations based on alternative engines and based on steam turbines (coal, heavy fuel and natural gas-fueled turbines); the environmental constraints of combustion turbines (pollutants, techniques of reduction of pollutant emissions); the environmental constraints of alternative internal combustion engines (gas and diesel engines); cogeneration and energy saving; the techniques of reduction of pollutant emissions (pollutants, unburnt hydrocarbons, primary and secondary (catalytic) techniques, post-combustion); the most-advanced configurations of cogeneration installations for enhanced performances (counter-pressure turbines, massive steam injection cycles, turbo-chargers); comparison between the performances of the different cogeneration techniques; the tri-generation technique (compression and absorption cycles). (J.S.)

  20. Initial shunt type at the Norwood operation impacts myocardial function in hypoplastic left heart syndrome.

    Science.gov (United States)

    Ruotsalainen, Hanna K; Pihkala, Jaana; Salminen, Jukka; Hornberger, Lisa K; Sairanen, Heikki; Ojala, Tiina

    2017-08-01

    We investigated the impact of initial shunt type, a Blalock-Taussig (BT) shunt versus a right ventricle to pulmonary artery conduit (RV-PA) on myocardial function at different stages of surgical palliation in patients with hypoplastic left heart syndrome (HLHS). A population-based cohort of 63 Finnish children with HLHS (BT n  = 23, RV-PA n  = 40) born between 2003 and 2010 were studied retrospectively by echocardiography prior to Stages 1, 2 and 3 palliation and 0.5-3 years after Stage 3. For comparison of systolic myocardial function, we evaluated the RV fractional area change (FAC), strain, strain rate and mechanical synchrony from the apical 4-chamber view by velocity vector imaging. There were no intergroup differences in demographics during the study period. At baseline, no intergroup differences were detected in RV systolic myocardial function. Before Stage 2, RV FAC was higher ( P  = 0.03) in the RV-PA conduit group. At Stage 3, an increase in all systolic myocardial functional parameters was observed in the BT shunt group. After Stage 3, the BT shunt group had better RV systolic function. In multiple regression analysis, the shunt type and the stage of palliation had an impact on myocardial function. Although patients with HLHS initially palliated with a BT shunt demonstrate lower RV FAC after Stage I, RV FAC improves after Stage 2 with better systolic performance after Stage 3 compared with those initially palliated with an RV-PA conduit. © The Author 2017. Published by Oxford University Press on behalf of the European Association for Cardio-Thoracic Surgery. All rights reserved.

  1. Surface science techniques

    CERN Document Server

    Bracco, Gianangelo

    2013-01-01

    The book describes the experimental techniques employed to study surfaces and interfaces. The emphasis is on the experimental method. Therefore all chapters start with an introduction of the scientific problem, the theory necessary to understand how the technique works and how to understand the results. Descriptions of real experimental setups, experimental results at different systems are given to show both the strength and the limits of the technique. In a final part the new developments and possible extensions of the techniques are presented. The included techniques provide microscopic as well as macroscopic information. They cover most of the techniques used in surface science.

  2. Training techniques for industry

    International Nuclear Information System (INIS)

    Jones, D.W.

    1978-01-01

    The advantages and disadvantages of commonly used training techniques in relation to cost-effective, prevention-oriented Quality Assurance are examined. Important questions are whether training techniques teach cost effectiveness and whether the techniques are, themselves, cost effective. To answer these questions, criteria for evaluating teaching techniques for cost effectiveness were developd, and then commonly used techniques are evaluated in terms of specific training program objectives. Motivation of personnel is also considered important to the success of a training program, and methods are outlined by which recognition of the academic quality of industrial training can be used as a motivational technique

  3. Airway Clearance Techniques (ACTs)

    Medline Plus

    Full Text Available ... to loosen mucus from airway walls. See how different airway clearance techniques work to help you clear the thick, sticky mucus ... Offer their tips for fitting ACTs into daily life Airway Clearance Techniques | Webcast ... Facebook Twitter ...

  4. Nuclear techniques in industry

    International Nuclear Information System (INIS)

    Hammad, F.H.

    1994-01-01

    Nuclear techniques are utilized in almost every industry. The discussion in this paper includes discussions on tracer methods and uses nucleonic control systems technology; non-destructive testing techniques and radiation technology. 1 fig., 2 tabs

  5. Airway Clearance Techniques (ACTs)

    Medline Plus

    Full Text Available ... decisions about your health care. CF Genetics: The Basics CF Mutations Video Series Find Out More About ... of Breathing Technique Airway Clearance Techniques Autogenic Drainage Basics of Lung Care Chest Physical Therapy Coughing and ...

  6. Airway Clearance Techniques (ACTs)

    Medline Plus

    Full Text Available ... Active Cycle of Breathing Technique Airway Clearance Techniques Autogenic Drainage Basics of Lung Care Chest Physical Therapy ... clearance. Facebook Twitter Email More Related Content Medications Autogenic Drainage Positive Expiratory Pressure High-Frequency Chest Wall ...

  7. Airway Clearance Techniques (ACTs)

    Medline Plus

    Full Text Available ... a range of treatment options. Airway Clearance Active Cycle of Breathing Technique Airway Clearance Techniques Autogenic Drainage ... LEGACY GIFT Sponsor a Participant CF Climb CF Cycle for Life Great Strides Xtreme Hike Participate In ...

  8. Airway Clearance Techniques (ACTs)

    Medline Plus

    Full Text Available ... many challenges, including medical, social, and financial. By learning more about how you can manage your disease every day, you can ultimately help find a ... Cycle of Breathing Technique Airway Clearance Techniques Autogenic ...

  9. Airway Clearance Techniques (ACTs)

    Medline Plus

    Full Text Available ... Cycle of Breathing Technique Airway Clearance Techniques Autogenic Drainage Basics of Lung Care Chest Physical Therapy Coughing ... Facebook Twitter Email More Related Content Medications Autogenic Drainage Positive Expiratory Pressure High-Frequency Chest Wall Oscillation ( ...

  10. Radiation scattering techniques

    International Nuclear Information System (INIS)

    Edmonds, E.A.

    1986-01-01

    Radiation backscattering techniques are useful when access to an item to be inspected is restricted to one side. These techniques are very sensitive to geometrical effects. Scattering processes and their application to the determination of voids, thickness measuring, well-logging and the use of x-ray fluorescence techniques are discussed. (U.K.)

  11. Point of Technique

    African Journals Online (AJOL)

    .

    Minimally invasive techniques are becoming popular choice for the recent times. These techniques are lowering the cost and giving the best cosmetic results. For cardiovascular surgery these techniques are much more newer and much more unknown. Open lumbar sympathectomy for certain indications is a very well ...

  12. Nuclear techniques in hydrology

    International Nuclear Information System (INIS)

    Moser, H.

    1976-01-01

    The nuclear techniques used in hydrology are usually tracer techniques based on the use of nuclides either intentionally introduced into, or naturally present in the water. The low concentrations of these nuclides, which must be detected in groundwater and surface water, require special measurement techniques for the concentrations of radioactive or of stable nuclides. The nuclear techniques can be used most fruitfully in conjunction with conventional methods for the solution of problems in the areas of hydrology, hydrogeology and glacier hydrology. Nuclear techniques are used in practice in the areas of prospecting for water, environment protection and engineering hydrogeology. (orig.) [de

  13. Specific radiography technique

    International Nuclear Information System (INIS)

    Abdul Nassir Ibrahim; Azali Muhammad; Ab. Razak Hamzah; Abd. Aziz Mohamed; Mohamad Pauzi Ismail

    2008-01-01

    Beside radiography testing using x-ray machine and gamma source, there are several technique that developed specifically to complete the testing that cannot be done with the two earlier. This technique was specific based on several factor, for the example, the advantages of neutron and electron using to show the image was unique compare to x-ray and gamma. Besides that, these special radiography techniques maybe differ in how to detect the radiation get through the object. These technique can used to inspect thin or specimen that contained radioactive material. There are several technique will discussed in this chapter such as neutron radiography, electron radiography, fluoroscopy and also autoradiography.

  14. Low current beam techniques

    Energy Technology Data Exchange (ETDEWEB)

    Saint, A; Laird, J S; Bardos, R A; Legge, G J.F. [Melbourne Univ., Parkville, VIC (Australia). School of Physics; Nishijima, T; Sekiguchi, H [Electrotechnical Laboratory, Tsukuba (Japan).

    1994-12-31

    Since the development of Scanning Transmission Microscopy (STIM) imaging in 1983 many low current beam techniques have been developed for the scanning (ion) microprobe. These include STIM tomography, Ion Beam Induced Current, Ion Beam Micromachining and Microlithography and Ionoluminense. Most of these techniques utilise beam currents of 10{sup -15} A down to single ions controlled by beam switching techniques This paper will discuss some of the low beam current techniques mentioned above, and indicate, some of their recent applications at MARC. A new STIM technique will be introduced that can be used to obtain Z-contrast with STIM resolution. 4 refs., 3 figs.

  15. Low current beam techniques

    Energy Technology Data Exchange (ETDEWEB)

    Saint, A.; Laird, J.S.; Bardos, R.A.; Legge, G.J.F. [Melbourne Univ., Parkville, VIC (Australia). School of Physics; Nishijima, T.; Sekiguchi, H. [Electrotechnical Laboratory, Tsukuba (Japan).

    1993-12-31

    Since the development of Scanning Transmission Microscopy (STIM) imaging in 1983 many low current beam techniques have been developed for the scanning (ion) microprobe. These include STIM tomography, Ion Beam Induced Current, Ion Beam Micromachining and Microlithography and Ionoluminense. Most of these techniques utilise beam currents of 10{sup -15} A down to single ions controlled by beam switching techniques This paper will discuss some of the low beam current techniques mentioned above, and indicate, some of their recent applications at MARC. A new STIM technique will be introduced that can be used to obtain Z-contrast with STIM resolution. 4 refs., 3 figs.

  16. Pulse holographic measurement techniques

    International Nuclear Information System (INIS)

    Kim, Cheol Jung; Baik, Seong Hoon; Hong, Seok Kyung; Kim, Jeong Moog; Kim, Duk Hyun

    1992-01-01

    With the development of laser, remote inspection techniques using laser have been growing on. The inspection and measurement techniques by pulse holography are well-established technique for precise measurement, and widely used in various fields of industry now. In nuclear industry, this technology is practically used because holographic inspection is remote, noncontact, and precise measurement technique. In relation to remote inspection technology in nuclear industry, state-of-the art of pulse HNDT (Holographic non-destructive testing) and holographic measurement techniques are examined. First of all, the fundamental principles as well as practical problems for applications are briefly described. The fields of pulse holography have been divided into the HNDT, flow visualization and distribution study, and other application techniques. Additionally holographic particle study, bubble chamber holography, and applications to other visualization techniques are described. Lastly, the current status for the researches and applications of pulse holography to nuclear industry which are carried out actively in Europe and USA, is described. (Author)

  17. Quality Attribute Techniques Framework

    Science.gov (United States)

    Chiam, Yin Kia; Zhu, Liming; Staples, Mark

    The quality of software is achieved during its development. Development teams use various techniques to investigate, evaluate and control potential quality problems in their systems. These “Quality Attribute Techniques” target specific product qualities such as safety or security. This paper proposes a framework to capture important characteristics of these techniques. The framework is intended to support process tailoring, by facilitating the selection of techniques for inclusion into process models that target specific product qualities. We use risk management as a theory to accommodate techniques for many product qualities and lifecycle phases. Safety techniques have motivated the framework, and safety and performance techniques have been used to evaluate the framework. The evaluation demonstrates the ability of quality risk management to cover the development lifecycle and to accommodate two different product qualities. We identify advantages and limitations of the framework, and discuss future research on the framework.

  18. Tracer techniques in microelectronics

    International Nuclear Information System (INIS)

    Flachowsky, J.; Freyer, K.

    1981-01-01

    Tracer technique and neutron activation analysis are capable of measuring impurities in semiconductor material or on the semiconductor surface in a very low concentration range. The methods, combined with autoradiography, are also suitable to determine dopant distributions in silicon. However, both techniques suffer from certain inherent experimental difficulties and/or limitations which are discussed. Methods of tracer technique practicable in the semiconductor field are described. (author)

  19. Materials characterization techniques

    National Research Council Canada - National Science Library

    Zhang, Sam; Li, L; Kumar, Ashok

    2009-01-01

    "With an emphasis on practical applications and real-world case studies, Materials Characterization Techniques presents the principles of widely used advanced surface and structural characterization...

  20. Persian fencing techniques

    Directory of Open Access Journals (Sweden)

    Manouchehr Moshtagh Khorasani

    2012-07-01

    Full Text Available There are numerous manuscripts, poems and stories that describe, specifically and in detail, the different techniques used in Persian swordsmanship. The present article explains the origins and the techniques of Persian swordsmanship. The article also describes the traditional code of conduct for Persian warriors. Additionally, it describes an array of techniques that were deployed in actual combat in Iran’s history. Some of these techniques are represented via the miniatures that are reproduced herein. This is the first article on Persian swordsmanship published in any periodical.

  1. Uranium exploration techniques

    International Nuclear Information System (INIS)

    Nichols, C.E.

    1984-01-01

    The subject is discussed under the headings: introduction (genetic description of some uranium deposits; typical concentrations of uranium in the natural environment); sedimentary host rocks (sandstones; tabular deposits; roll-front deposits; black shales); metamorphic host rocks (exploration techniques); geologic techniques (alteration features in sandstones; favourable features in metamorphic rocks); geophysical techniques (radiometric surveys; surface vehicle methods; airborne methods; input surveys); geochemical techniques (hydrogeochemistry; petrogeochemistry; stream sediment geochemistry; pedogeochemistry; emanometry; biogeochemistry); geochemical model for roll-front deposits; geologic model for vein-like deposits. (U.K.)

  2. Principles of fluorescence techniques

    CERN Document Server

    2016-01-01

    Fluorescence techniques are being used and applied increasingly in academics and industry. The Principles of Fluorescence Techniques course will outline the basic concepts of fluorescence techniques and the successful utilization of the currently available commercial instrumentation. The course is designed for students who utilize fluorescence techniques and instrumentation and for researchers and industrial scientists who wish to deepen their knowledge of fluorescence applications. Key scientists in the field will deliver theoretical lectures. The lectures will be complemented by the direct utilization of steady-state and lifetime fluorescence instrumentation and confocal microscopy for FLIM and FRET applications provided by leading companies.

  3. Laser induced pyrolysis techniques

    International Nuclear Information System (INIS)

    Vanderborgh, N.E.

    1976-01-01

    The application of laser pyrolysis techniques to the problems of chemical analysis is discussed. The processes occurring during laser pyrolysis are first briefly reviewed. The problems encountered in laser pyrolysis gas chromatography are discussed using the analysis of phenanthrene and binary hydrocarbons. The application of this technique to the characterization of naturally occurring carbonaceous material such as oil shales and coal is illustrated

  4. A Technique: Exposure Therapy

    Directory of Open Access Journals (Sweden)

    Serkan AKKOYUNLU

    2013-08-01

    Conclusion: Exposure with response prevention is a basic and effective technique. Every cognitive behavior therapist must be able to implement this technique and be cognizant of pearls of this procedure. (Journal of Cognitive Behavioral Psychotherapy and Research 2013, 2: 121-128 [JCBPR 2013; 2(2.000: 121-128

  5. Analytical system availability techniques

    NARCIS (Netherlands)

    Brouwers, J.J.H.; Verbeek, P.H.J.; Thomson, W.R.

    1987-01-01

    Analytical techniques are presented to assess the probability distributions and related statistical parameters of loss of production from equipment networks subject to random failures and repairs. The techniques are based on a theoretical model for system availability, which was further developed

  6. Glycoprotein and proteoglycan techniques

    International Nuclear Information System (INIS)

    Beeley, J.G.

    1985-01-01

    The aim of this book is to describe techniques which can be used to answer some of the basic questions about glycosylated proteins. Methods are discussed for isolation, compositional analysis, and for determination of the primary structure of carbohydrate units and the nature of protein-carbohydrate linkages of glycoproteins and proteoglycans. High resolution NMR is considered, as well as radioactive labelling techniques. (Auth.)

  7. Lymphography - an outdated technique

    International Nuclear Information System (INIS)

    Peters, P.E.

    1982-01-01

    The indications for lymphography have changed with the availability of non-invasive techniques like ultrasonic techniques and computerized tomography. This review discusses: Recent results of lymphography in histologically verified patient collectives with lymphatic systemic diseases and lymphatic metastizing tumors. The present role of lymphography is derived from this status report as well as the future perspectives. (orig.) [de

  8. Techniques of radiation dosimetry

    International Nuclear Information System (INIS)

    Mahesk, K.

    1985-01-01

    A text and reference with an interdisciplinary approach to physics, atomic energy, radiochemistry, and radiobiology. Chapters examine basic principles, experimental techniques, the methodology of dose experiments, and applications. Treats 14 different dosimetric techniques, including ionization chamber, thermoluminescence, and lyoluminescence. Considers the conceptual aspects and characteristic features of radiation

  9. Contamination Control Techniques

    Energy Technology Data Exchange (ETDEWEB)

    EBY, J.L.

    2000-05-16

    Welcome to a workshop on contamination Control techniques. This work shop is designed for about two hours. Attendee participation is encouraged during the workshop. We will address different topics within contamination control techniques; present processes, products and equipment used here at Hanford and then open the floor to you, the attendees for your input on the topics.

  10. Contamination Control Techniques

    International Nuclear Information System (INIS)

    EBY, J.L.

    2000-01-01

    Welcome to a workshop on contamination Control techniques. This work shop is designed for about two hours. Attendee participation is encouraged during the workshop. We will address different topics within contamination control techniques; present processes, products and equipment used here at Hanford and then open the floor to you, the attendees for your input on the topics

  11. Relaxation techniques for stress

    Science.gov (United States)

    ... raise your heart rate. This is called the stress response. Relaxation techniques can help your body relax and lower your blood pressure ... also many other types of breathing techniques you can learn. In many cases, you do not need much ... including those that cause stress. Meditation has been practiced for thousands of years, ...

  12. Emerging optical nanoscopy techniques

    Directory of Open Access Journals (Sweden)

    Montgomery PC

    2015-09-01

    Full Text Available Paul C Montgomery, Audrey Leong-Hoi Laboratoire des Sciences de l'Ingénieur, de l'Informatique et de l'Imagerie (ICube, Unistra-CNRS, Strasbourg, France Abstract: To face the challenges of modern health care, new imaging techniques with subcellular resolution or detection over wide fields are required. Far field optical nanoscopy presents many new solutions, providing high resolution or detection at high speed. We present a new classification scheme to help appreciate the growing number of optical nanoscopy techniques. We underline an important distinction between superresolution techniques that provide improved resolving power and nanodetection techniques for characterizing unresolved nanostructures. Some of the emerging techniques within these two categories are highlighted with applications in biophysics and medicine. Recent techniques employing wider angle imaging by digital holography and scattering lens microscopy allow superresolution to be achieved for subcellular and even in vivo, imaging without labeling. Nanodetection techniques are divided into four subcategories using contrast, phase, deconvolution, and nanomarkers. Contrast enhancement is illustrated by means of a polarized light-based technique and with strobed phase-contrast microscopy to reveal nanostructures. Very high sensitivity phase measurement using interference microscopy is shown to provide nanometric surface roughness measurement or to reveal internal nanometric structures. Finally, the use of nanomarkers is illustrated with stochastic fluorescence microscopy for mapping intracellular structures. We also present some of the future perspectives of optical nanoscopy. Keywords: microscopy, imaging, superresolution, nanodetection, biophysics, medical imaging

  13. Disagreements around techniques

    International Nuclear Information System (INIS)

    Sachsse, H.

    The modern man lives in disagreement with its techniques. Technical progress is the foundation of its material and spiritual existence, but he does not like it. Specialization, difficult understanding of the technical procedures and the price that has to be paid for technical progress, have led to a deep-going enstrangement. Therefore the question: What kind of human function has our technique. It is understood as an extension and perfection of our bodily organs, in order to increase our ability to see and to hear enormously, and to intervene formatively in the existing reality. Technique is therefore an instrument of comprehensive self-realization of man. (orig./GL) [de

  14. Spectrometric techniques 3

    CERN Document Server

    Vanasse, George A

    2013-01-01

    Spectrometric Techniques, Volume III presents the applications of spectrometric techniques to atmospheric and space studies. This book reviews the spectral data processing and analysis techniques that are of broad applicability.Organized into five chapters, this volume begins with an overview of the instrumentation used for obtaining field data. This text then reviews the contribution that space-borne spectroscopy in the thermal IR has made to the understanding of the planets. Other chapters consider the instruments that have recorded the planetary emission spectra. This book discusses as well

  15. Spectrometric techniques 4

    CERN Document Server

    Vanasse, George A

    2013-01-01

    Spectrometric Techniques, Volume IV discusses three widely diversified areas of spectrometric techniques. The book focuses on three spectrometric methods. Chapter 1 discusses the phenomenology and applications of Coherent Anti-Stokes Raman Spectroscopy (CARS), the most commonly used optical technique that exploit the Raman effect. The second chapter is concerned with diffraction gratings and mountings for the Vacuum Ultraviolet Spectral Region. Chapter 3 accounts the uses of mass spectrometry, detectors, types of spectrometers, and ion sources. Physicists and chemists will find the book a go

  16. Separation techniques: Chromatography

    Science.gov (United States)

    Coskun, Ozlem

    2016-01-01

    Chromatography is an important biophysical technique that enables the separation, identification, and purification of the components of a mixture for qualitative and quantitative analysis. Proteins can be purified based on characteristics such as size and shape, total charge, hydrophobic groups present on the surface, and binding capacity with the stationary phase. Four separation techniques based on molecular characteristics and interaction type use mechanisms of ion exchange, surface adsorption, partition, and size exclusion. Other chromatography techniques are based on the stationary bed, including column, thin layer, and paper chromatography. Column chromatography is one of the most common methods of protein purification. PMID:28058406

  17. Spectrometric techniques 2

    CERN Document Server

    Vanasse, George A

    2013-01-01

    Spectrometric Techniques, Volume II provides information pertinent to vacuum ultraviolet techniques to complete the demonstration of the diversity of methods available to the spectroscopist interested in the ultraviolet visible and infrared spectral regions. This book discusses the specific aspects of the technique of Fourier transform spectroscopy.Organized into five chapters, this volume begins with an overview of the large number of systematic effects in the recording of an interferogram. This text then examines the design approach for a Fourier transform spectrometer with focus on optics.

  18. Advanced analytical techniques

    International Nuclear Information System (INIS)

    Mrochek, J.E.; Shumate, S.E.; Genung, R.K.; Bahner, C.T.; Lee, N.E.; Dinsmore, S.R.

    1976-01-01

    The development of several new analytical techniques for use in clinical diagnosis and biomedical research is reported. These include: high-resolution liquid chromatographic systems for the early detection of pathological molecular constituents in physiologic body fluids; gradient elution chromatography for the analysis of protein-bound carbohydrates in blood serum samples, with emphasis on changes in sera from breast cancer patients; electrophoretic separation techniques coupled with staining of specific proteins in cellular isoenzymes for the monitoring of genetic mutations and abnormal molecular constituents in blood samples; and the development of a centrifugal elution chromatographic technique for the assay of specific proteins and immunoglobulins in human blood serum samples

  19. Adaptive algebraic reconstruction technique

    International Nuclear Information System (INIS)

    Lu Wenkai; Yin Fangfang

    2004-01-01

    Algebraic reconstruction techniques (ART) are iterative procedures for reconstructing objects from their projections. It is proven that ART can be computationally efficient by carefully arranging the order in which the collected data are accessed during the reconstruction procedure and adaptively adjusting the relaxation parameters. In this paper, an adaptive algebraic reconstruction technique (AART), which adopts the same projection access scheme in multilevel scheme algebraic reconstruction technique (MLS-ART), is proposed. By introducing adaptive adjustment of the relaxation parameters during the reconstruction procedure, one-iteration AART can produce reconstructions with better quality, in comparison with one-iteration MLS-ART. Furthermore, AART outperforms MLS-ART with improved computational efficiency

  20. Approximation techniques for engineers

    CERN Document Server

    Komzsik, Louis

    2006-01-01

    Presenting numerous examples, algorithms, and industrial applications, Approximation Techniques for Engineers is your complete guide to the major techniques used in modern engineering practice. Whether you need approximations for discrete data of continuous functions, or you''re looking for approximate solutions to engineering problems, everything you need is nestled between the covers of this book. Now you can benefit from Louis Komzsik''s years of industrial experience to gain a working knowledge of a vast array of approximation techniques through this complete and self-contained resource.

  1. Airway Clearance Techniques (ACTs)

    Medline Plus

    Full Text Available ... specialized CF care and a range of treatment options. Airway Clearance Active Cycle of Breathing Technique Airway ... on their own. Share Facebook Twitter Email More options Print Share Facebook Twitter Email Print Permalink All ...

  2. Airway Clearance Techniques (ACTs)

    Medline Plus

    Full Text Available ... Techniques Autogenic Drainage Basics of Lung Care Chest Physical Therapy Coughing and Huffing High-Frequency Chest Wall ... Care Guidelines Newborn Screening Clinical Care Guidelines Sweat Test Clinical Care Guidelines Infection Prevention and Control Care ...

  3. Plant tissue culture techniques

    Directory of Open Access Journals (Sweden)

    Rolf Dieter Illg

    1991-01-01

    Full Text Available Plant cell and tissue culture in a simple fashion refers to techniques which utilize either single plant cells, groups of unorganized cells (callus or organized tissues or organs put in culture, under controlled sterile conditions.

  4. RFCM Techniques Chamber Facility

    Data.gov (United States)

    Federal Laboratory Consortium — FUNCTION: Provides the capability to develop radio-frequency countermeasure (RFCM) techniques in a controlled environment from 2.0 to 40.0 GHz. The configuration of...

  5. Airway Clearance Techniques (ACTs)

    Medline Plus

    Full Text Available ... Treatments and Therapies Airway Clearance Airway Clearance Techniques (ACTs) There are different ways to clear your airways. ... or caregiver. Older kids and adults can choose ACTs that they can do on their own. Share ...

  6. Airway Clearance Techniques (ACTs)

    Medline Plus

    Full Text Available ... a Family Parenting as an Adult With CF Treatments and Therapies People with cystic fibrosis are living ... to specialized CF care and a range of treatment options. Airway Clearance Active Cycle of Breathing Technique ...

  7. Airway Clearance Techniques (ACTs)

    Medline Plus

    Full Text Available ... a Family Parenting as an Adult With CF Treatments and Therapies People with cystic fibrosis are living longer and ... to specialized CF care and a range of treatment options. Airway Clearance Active Cycle of Breathing Technique ...

  8. Airway Clearance Techniques (ACTs)

    Medline Plus

    Full Text Available ... Make a Charitable Gift Our Corporate Supporters Workplace Engagement DONATE YOUR PROPERTY eCards for a Cure About ... airway walls. See how different airway clearance techniques work to help you clear the thick, sticky mucus ...

  9. Lightweight Cryptographic Techniques

    National Research Council Canada - National Science Library

    Yuen, Horace

    2004-01-01

    The objective of this project was to develop new cryptographic techniques, and to modify the important existing ones, for applications to encryption and authentication in energy-constrained sensors...

  10. Variational Monte Carlo Technique

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 19; Issue 8. Variational Monte Carlo Technique: Ground State Energies of Quantum Mechanical Systems. Sukanta Deb. General Article Volume 19 Issue 8 August 2014 pp 713-739 ...

  11. Alternative Assessment Techniques.

    Science.gov (United States)

    Lowenthal, Barbara

    1988-01-01

    Maintaining the precision necessary for administering norm referenced tests can be a problem for the special education teacher who is trained to assist the student. Criterion-referenced tests, observations, and interviews are presented as effective alternative assessment techniques. (JDD)

  12. Airway Clearance Techniques (ACTs)

    Medline Plus

    Full Text Available ... Techniques Autogenic Drainage Basics of Lung Care Chest Physical Therapy Coughing and Huffing High-Frequency Chest Wall ... Clinical Care Guidelines Chronic Medications to Maintain Lung Health Clinical Care Guidelines Lung Transplants Clinical Care Guidelines ...

  13. Healthy Cooking Techniques

    Science.gov (United States)

    Healthy Lifestyle Nutrition and healthy eating Healthy-cooking techniques capture the flavor and nutrients of food without extra fat or salt. By Mayo Clinic Staff Healthy cooking doesn't mean that ...

  14. Airway Clearance Techniques (ACTs)

    Medline Plus

    Full Text Available ... today. ANNUAL FUND Become a Corporate Supporter Cause Marketing Make a Charitable Gift Our Corporate Supporters Workplace ... Clearance Airway Clearance Techniques (ACTs) There are different ways to clear your airways. Most are easy to ...

  15. Airway Clearance Techniques (ACTs)

    Medline Plus

    Full Text Available ... ACTs involve coughing or huffing . Many of them use percussion (clapping) or vibration to loosen mucus from airway walls. See how different airway clearance techniques work to help you clear the thick, sticky mucus ...

  16. Airway Clearance Techniques (ACTs)

    Medline Plus

    Full Text Available ... Physical Therapy Coughing and Huffing High-Frequency Chest Wall Oscillation Positive Expiratory Pressure Clinical Trials Clinical Trials ... clapping) or vibration to loosen mucus from airway walls. See how different airway clearance techniques work to ...

  17. Airway Clearance Techniques (ACTs)

    Medline Plus

    Full Text Available ... D Structure Consortium CFTR Folding Consortium Epithelial Stem Cell Consortium Mucociliary Clearance Consortium SUCCESS WITH THERAPIES RESEARCH ... clapping) or vibration to loosen mucus from airway walls. See how different airway clearance techniques work to ...

  18. Materials characterization techniques

    National Research Council Canada - National Science Library

    Zhang, Sam; Li, L; Kumar, Ashok

    2009-01-01

    ... techniques for quality assurance, contamination control, and process improvement. The book reviews the most popular and powerful analysis and quality control tools, explaining the appropriate uses and related technical requirements...

  19. Radiochemical procedures and techniques

    International Nuclear Information System (INIS)

    Flynn, K.

    1975-04-01

    A summary is presented of the radiochemical procedures and techniques currently in use by the Chemistry Division Nuclear Chemistry Group at Argonne National Laboratory for the analysis of radioactive samples. (U.S.)

  20. Airway Clearance Techniques (ACTs)

    Science.gov (United States)

    ... infant or child manage their lung health, watch parents of children with CF and a respiratory therapist talk about the different techniques they use for airway ... Positive Expiratory Pressure High-Frequency Chest Wall Oscillation (the Vest) Follow ...

  1. Radon survey techniques

    International Nuclear Information System (INIS)

    Anon.

    1976-01-01

    The report reviews radon measurement surveys in soils and in water. Special applications, and advantages and limitations of the radon measurement techniques are considered. The working group also gives some directions for further research in this field

  2. Stargate: Energy Management Techniques

    OpenAIRE

    Vijay Raghunathan; Mani Srivastava; Trevor Pering; Roy Want

    2004-01-01

    This poster presents techniques for energy efficient operation of the Stargate wireless platform. In addition to conventional power management techniques such as dynamic voltage and scaling and processor shutdown, the Stargate features several mechanisms for energy efficient operation of the communication subsystem, such as support for hierarchical radios, Bluetooth based remote wakeup, mote based wakeup, etc. Finally, design optimizations including the use of power gating, and provision for ...

  3. Applying contemporary statistical techniques

    CERN Document Server

    Wilcox, Rand R

    2003-01-01

    Applying Contemporary Statistical Techniques explains why traditional statistical methods are often inadequate or outdated when applied to modern problems. Wilcox demonstrates how new and more powerful techniques address these problems far more effectively, making these modern robust methods understandable, practical, and easily accessible.* Assumes no previous training in statistics * Explains how and why modern statistical methods provide more accurate results than conventional methods* Covers the latest developments on multiple comparisons * Includes recent advanc

  4. Next generation initiation techniques

    Science.gov (United States)

    Warner, Tom; Derber, John; Zupanski, Milija; Cohn, Steve; Verlinde, Hans

    1993-01-01

    Four-dimensional data assimilation strategies can generally be classified as either current or next generation, depending upon whether they are used operationally or not. Current-generation data-assimilation techniques are those that are presently used routinely in operational-forecasting or research applications. They can be classified into the following categories: intermittent assimilation, Newtonian relaxation, and physical initialization. It should be noted that these techniques are the subject of continued research, and their improvement will parallel the development of next generation techniques described by the other speakers. Next generation assimilation techniques are those that are under development but are not yet used operationally. Most of these procedures are derived from control theory or variational methods and primarily represent continuous assimilation approaches, in which the data and model dynamics are 'fitted' to each other in an optimal way. Another 'next generation' category is the initialization of convective-scale models. Intermittent assimilation systems use an objective analysis to combine all observations within a time window that is centered on the analysis time. Continuous first-generation assimilation systems are usually based on the Newtonian-relaxation or 'nudging' techniques. Physical initialization procedures generally involve the use of standard or nonstandard data to force some physical process in the model during an assimilation period. Under the topic of next-generation assimilation techniques, variational approaches are currently being actively developed. Variational approaches seek to minimize a cost or penalty function which measures a model's fit to observations, background fields and other imposed constraints. Alternatively, the Kalman filter technique, which is also under investigation as a data assimilation procedure for numerical weather prediction, can yield acceptable initial conditions for mesoscale models. The

  5. Creation of aorto-pulmonary window with pulmonary artery band is not good palliation for hypoplastic left heart syndrome.

    Science.gov (United States)

    Hosein, Riad B M; Mehta, Chetan; Stickley, John; Mcguirk, Simon P; Jones, Timothy J; Brawn, William J; Barron, David J

    2007-11-01

    A small sub-group of patients with hypoplastic left heart syndrome (HLHS) have normal-sized ascending aorta and arch. An alternative to the Norwood I procedure in these patients is the creation of an aorto-pulmonary (AP) window with a distal pulmonary artery band (PAB). We reviewed our experience with this technique and compared outcomes to the Norwood procedure for HLHS. All patients treated for HLHS in a single institution between 1992 and 2005 were analysed. This identified 13 patients treated with AP window and PAB compared to 333 patients undergoing stage I Norwood procedure. An unrestrictive AP window was created and the main PA was banded. Patient records and echocardiograms were analysed. Median follow-up was 10 (IQR 0-655) days and 100% complete. There were seven early deaths (54%) in the AP window group and two conversions to Norwood circulation. This was a significantly worse outcome than for the Norwood procedure over the same period, which had an early mortality of 29% (p=0.03). Kaplan-Meier actuarial analysis demonstrated a continued survival benefit of the Norwood group at 6 months (p=0.0005). Deaths were due to either low cardiac output syndrome (n=4) or sudden unheralded arrest (n=3). This occurred despite aortic cross-clamp and circulatory arrest times being significantly lower in the AP window group compared to the Norwood group (35+/-27 vs 55+/-16 min, p<0.01 and 16+/-29 vs 55+/-20 min, p<0.01, respectively). No differences in arterial saturations or systolic blood pressure existed between the groups, but diastolic blood pressure was significantly lower in the AP window group at 27+/-10 mmHg compared to 42+/-8 mmHg in the Norwood group (p=0.01) with evidence of flow reversal in the descending aorta. Differences in diastolic blood pressure between groups were abolished after conversion to stage II. Despite favourable anatomy and shorter ischaemic times, the AP window/PAB technique has a poor outcome compared to the Norwood procedure for HLHS. Low

  6. Protaper--hybrid technique.

    Science.gov (United States)

    Simon, Stephane; Lumley, Philip; Tomson, Phillip; Pertot, Wilhelm-Joseph; Machtou, Pierre

    2008-03-01

    Crown down preparation is the most known and described technique since the introduction of Nickel Titanium (NiTi) rotary instruments in endodontics. This technique gives good results but has limitations, such as not addressing the initial anatomy of oval or dumb-bell shaped canals. The specific design of the Protaper instruments allows use of them with a different technique and, specifically, with a brushing motion in the body of the canal. The recent introduction of hand Protaper files has expanded the range of application of this system, especially in curved canals. The 'hybrid technique', using rotary and hand files, and the advantages of the combination of both instruments, are clearly described in this article. Used with this technique, the Protaper is a very safe system to use, and more controllable, for both inexperienced and experienced practitioners alike, than other systems. To understand the precautions needed with rotary files, and how to use them to preserve the anatomy of the canal and get a tapered shaping, even in severely curved canals.

  7. Handbook of laboratory techniques

    International Nuclear Information System (INIS)

    2002-01-01

    The Nuclear Regulatory Authority in Argentina have laboratories of support to regulations functions on radiological and nuclear safety, safeguards and physical protection, that have a surface of 2950 m 2 in the Ezeiza Atomic Center. The manual describes in seven chapters the different techniques developed and applied in the laboratories along four decades of existence. The chapter 1: Dedicated to the treatment of environmental samples, described the procedures associated with the different types of samples: deposits, waters, sediments, vegetables, milk, fish and diet. The chapter 2: Details 48 radiochemical techniques associated to the measurements of americium 241, carbon 16, strontium 90, iodine 129, plutonium, radium 226, radon, uranium, nickel and actinides. The chapter 3: Describes the measurements techniques of alpha and gamma spectrometry. The different techniques of biological and physical dosimetry are described in the chapters 5 and 6 respectively. The final chapter is dedicated the techniques of external and internal contamination. It s important to emphasize that this manual contains the standardized technologies that the Nuclear Regulatory Authority of Argentina submits regularly to international comparisons

  8. Telescopes and Techniques

    CERN Document Server

    Kitchin, C R

    2013-01-01

    Telescopes and Techniques has proved itself in its first two editions, having become probably one of the most widely used astronomy texts, both for amateur astronomers and astronomy and astrophysics undergraduates. Both earlier editions of the book were widely used for introductory practical astronomy courses in many universities. In this Third Edition the author guides the reader through the mathematics, physics and practical techniques needed to use today's telescopes (from the smaller models to the larger instruments installed in many colleges) and how to find objects in the sky. Most of the physics and engineering involved is described fully and requires little prior knowledge or experience. Both visual and electronic imaging techniques are covered, together with an introduction to how data (measurements) should be processed and analyzed. A simple introduction to radio telescopes is also included. Brief coverage of the more advanced topics of photometry and spectroscopy are included, but mainly to enable ...

  9. Radiation techniques for acromegaly

    Directory of Open Access Journals (Sweden)

    Minniti Giuseppe

    2011-12-01

    Full Text Available Abstract Radiotherapy (RT remains an effective treatment in patients with acromegaly refractory to medical and/or surgical interventions, with durable tumor control and biochemical remission; however, there are still concerns about delayed biochemical effect and potential late toxicity of radiation treatment, especially high rates of hypopituitarism. Stereotactic radiotherapy has been developed as a more accurate technique of irradiation with more precise tumour localization and consequently a reduction in the volume of normal tissue, particularly the brain, irradiated to high radiation doses. Radiation can be delivered in a single fraction by stereotactic radiosurgery (SRS or as fractionated stereotactic radiotherapy (FSRT in which smaller doses are delivered over 5-6 weeks in 25-30 treatments. A review of the recent literature suggests that pituitary irradiation is an effective treatment for acromegaly. Stereotactic techniques for GH-secreting pituitary tumors are discussed with the aim to define the efficacy and potential adverse effects of each of these techniques.

  10. Radiation techniques for acromegaly

    International Nuclear Information System (INIS)

    Minniti, Giuseppe; Scaringi, Claudia; Enrici, Riccardo Maurizi

    2011-01-01

    Radiotherapy (RT) remains an effective treatment in patients with acromegaly refractory to medical and/or surgical interventions, with durable tumor control and biochemical remission; however, there are still concerns about delayed biochemical effect and potential late toxicity of radiation treatment, especially high rates of hypopituitarism. Stereotactic radiotherapy has been developed as a more accurate technique of irradiation with more precise tumour localization and consequently a reduction in the volume of normal tissue, particularly the brain, irradiated to high radiation doses. Radiation can be delivered in a single fraction by stereotactic radiosurgery (SRS) or as fractionated stereotactic radiotherapy (FSRT) in which smaller doses are delivered over 5-6 weeks in 25-30 treatments. A review of the recent literature suggests that pituitary irradiation is an effective treatment for acromegaly. Stereotactic techniques for GH-secreting pituitary tumors are discussed with the aim to define the efficacy and potential adverse effects of each of these techniques

  11. Novel food processing techniques

    Directory of Open Access Journals (Sweden)

    Vesna Lelas

    2006-12-01

    Full Text Available Recently, a lot of investigations have been focused on development of the novel mild food processing techniques with the aim to obtain the high quality food products. It is presumed also that they could substitute some of the traditional processes in the food industry. The investigations are primarily directed to usage of high hydrostatic pressure, ultrasound, tribomechanical micronization, microwaves, pulsed electrical fields. The results of the scientific researches refer to the fact that application of some of these processes in particular food industry can result in lots of benefits. A significant energy savings, shortening of process duration, mild thermal conditions, food products with better sensory characteristics and with higher nutritional values can be achieved. As some of these techniques act also on the molecular level changing the conformation, structure and electrical potential of organic as well as inorganic materials, the improvement of some functional properties of these components may occur. Common characteristics of all of these techniques are treatment at ambient or insignificant higher temperatures and short time of processing (1 to 10 minutes. High hydrostatic pressure applied to various foodstuffs can destroy some microorganisms, successfully modify molecule conformation and consequently improve functional properties of foods. At the same time it acts positively on the food products intend for freezing. Tribomechanical treatment causes micronization of various solid materials that results in nanoparticles and changes in structure and electrical potential of molecules. Therefore, the significant improvement of some rheological and functional properties of materials occurred. Ultrasound treatment proved to be potentially very successful technique of food processing. It can be used as a pretreatment to drying (decreases drying time and improves functional properties of food, as extraction process of various components

  12. Surface science techniques

    CERN Document Server

    Walls, JM

    2013-01-01

    This volume provides a comprehensive and up to the minute review of the techniques used to determine the nature and composition of surfaces. Originally published as a special issue of the Pergamon journal Vacuum, it comprises a carefully edited collection of chapters written by specialists in each of the techniques and includes coverage of the electron and ion spectroscopies, as well as the atom-imaging methods such as the atom probe field ion microscope and the scanning tunnelling microscope. Surface science is an important area of study since the outermost surface layers play a crucial role

  13. Millimicrosecond pulse techniques

    CERN Document Server

    Lewis, Ian A D

    1959-01-01

    Millimicrosecond Pulse Techniques, Second Edition focuses on millimicrosecond pulse techniques and the development of devices of large bandwidth, extending down to comparatively low frequencies (1 Mc/s). Emphasis is on basic circuit elements and pieces of equipment of universal application. Specific applications, mostly in the field of nuclear physics instrumentation, are considered. This book consists of eight chapters and opens with an introduction to some of the terminology employed by circuit engineers as well as theoretical concepts, including the laws of circuit analysis, Fourier analysi

  14. Single well techniques

    International Nuclear Information System (INIS)

    Drost, W.

    1983-01-01

    The single well technique method includes measurement of parameters of groundwater flow in saturated rock. For determination of filtration velocity the dilution of radioactive tracer is measured, for direction logging the collimeter is rotated in the probe linked with the compass. The limiting factor for measurement of high filtration velocities is the occurrence of turbulent flow. The single well technique is used in civil engineering projects, water works and subsurface drainage of liquid waste from disposal sites. The radioactive tracer method for logging the vertical fluid movement in bore-holes is broadly used in groundwater survey and exploitation. (author)

  15. Stochastic Feedforward Control Technique

    Science.gov (United States)

    Halyo, Nesim

    1990-01-01

    Class of commanded trajectories modeled as stochastic process. Advanced Transport Operating Systems (ATOPS) research and development program conducted by NASA Langley Research Center aimed at developing capabilities for increases in capacities of airports, safe and accurate flight in adverse weather conditions including shear, winds, avoidance of wake vortexes, and reduced consumption of fuel. Advances in techniques for design of modern controls and increased capabilities of digital flight computers coupled with accurate guidance information from Microwave Landing System (MLS). Stochastic feedforward control technique developed within context of ATOPS program.

  16. Advanced Techniques in Biophysics

    CERN Document Server

    Arrondo, José Luis R

    2006-01-01

    Technical advancements are basic elements in our life. In biophysical studies, new applications and improvements in well-established techniques are being implemented every day. This book deals with advancements produced not only from a technical point of view, but also from new approaches that are being taken in the study of biophysical samples, such as nanotechniques or single-cell measurements. This book constitutes a privileged observatory for reviewing novel applications of biophysical techniques that can help the reader enter an area where the technology is progressing quickly and where a comprehensive explanation is not always to be found.

  17. Modern recording techniques

    CERN Document Server

    Huber, David Miles

    2013-01-01

    As the most popular and authoritative guide to recording Modern Recording Techniques provides everything you need to master the tools and day to day practice of music recording and production. From room acoustics and running a session to mic placement and designing a studio Modern Recording Techniques will give you a really good grounding in the theory and industry practice. Expanded to include the latest digital audio technology the 7th edition now includes sections on podcasting, new surround sound formats and HD and audio.If you are just starting out or looking for a step up

  18. Orbital welding technique

    International Nuclear Information System (INIS)

    Hoeschen, W.

    2003-01-01

    The TIG (Tungsten-inert gas) orbital welding technique is applied in all areas of pipe welding. The process is mainly used for austenitic and ferritic materials but also for materials like aluminium, nickel, and titanium alloys are commonly welded according to this technique. Thin-walled as well as thick-walled pipes are welded economically. The application of orbital welding is of particular interest in the area of maintenance of thick-walled pipes that is described in this article. (orig.) [de

  19. Neutron techniques in Safeguards

    International Nuclear Information System (INIS)

    Zucker, M.S.

    1982-01-01

    An essential part of Safeguards is the ability to quantitatively and nondestructively assay those materials with special neutron-interactive properties involved in nuclear industrial or military technology. Neutron techniques have furnished most of the important ways of assaying such materials, which is no surprise since the neutronic properties are what characterizes them. The techniques employed rely on a wide selection of the many methods of neutron generation, detection, and data analysis that have been developed for neutron physics and nuclear science in general

  20. Radiographic constant exposure technique

    DEFF Research Database (Denmark)

    Domanus, Joseph Czeslaw

    1985-01-01

    The constant exposure technique has been applied to assess various industrial radiographic systems. Different X-ray films and radiographic papers of two producers were compared. Special attention was given to fast film and paper used with fluorometallic screens. Radiographic image quality...... was tested by the use of ISO wire IQI's and ASTM penetrameters used on Al and Fe test plates. Relative speed and reduction of kilovoltage obtained with the constant exposure technique were calculated. The advantages of fast radiographic systems are pointed out...

  1. Nonenhanced MR angiography techniques

    International Nuclear Information System (INIS)

    Lanzman, R.S.; Kroepil, P.; Blondin, D.; Schmitt, P.

    2011-01-01

    Especially in regard to the potential risks for the development of nephrogenic systemic fibrosis (NSF) following the administration of Gadolinium-based contrast material, nonenhanced MR angiography (MRA) methods are becoming ever more important. Besides well-established time-of-flight (TOF) and phase-contrast (PC) MRA, alternative imaging techniques based on balanced steady-state free precession (bSSFP) and turbo-spin-echo (TSE) sequences are increasingly used in combination with or without arterial spin labeling (ASL) strategies. This article provides an overview of the principles and clinical values of different nonenhanced MRA techniques. In addition, recent nonenhanced MRA developments are presented. (orig.)

  2. Craniospinal irradiation techniques

    Energy Technology Data Exchange (ETDEWEB)

    Scarlatescu, Ioana, E-mail: scarlatescuioana@gmail.com; Avram, Calin N. [Faculty of Physics, West University of Timisoara, Bd. V. Parvan 4, 300223 Timisoara (Romania); Virag, Vasile [County Hospital “Gavril Curteanu” - Oradea (Romania)

    2015-12-07

    In this paper we present one treatment plan for irradiation cases which involve a complex technique with multiple beams, using the 3D conformational technique. As the main purpose of radiotherapy is to administrate a precise dose into the tumor volume and protect as much as possible all the healthy tissues around it, for a case diagnosed with a primitive neuro ectoderm tumor, we have developed a new treatment plan, by controlling one of the two adjacent fields used at spinal field, in a way that avoids the fields superposition. Therefore, the risk of overdose is reduced by eliminating the field divergence.

  3. Differential doppler heterodyning technique

    DEFF Research Database (Denmark)

    Lading, Lars

    1971-01-01

    Measuring velocity without disturbing the moving object is possible by use of the laser doppler heterodyning technique. Theoretical considerations on the doppler shift show that the antenna property of the photodetector can solve an apparent conflict between two different ways of calculating...

  4. Art Appreciation and Technique.

    Science.gov (United States)

    Dean, Diane R.; Milam, Debora

    1985-01-01

    Presents examples of independent study units for gifted high school students in a resource room setting. Both art appreciation and technique are covered in activities concerned with media (basics of pencil, India ink, pastels, crayons, oil, acrylics, and watercolors), subject matter (landscapes, animals, the human figure), design and illustration…

  5. Effective Retail Sales Techniques.

    Science.gov (United States)

    Canei, Robert A.

    The manual is a 12-hour program for adults who are working or preparing to work as retail salespeople. It can also be used as a summarization manual for high school students. The manual consists of five sessions which take the individual from the human aspect of sales to the related sales technique. The sessions are entitled: employee and customer…

  6. Airway Clearance Techniques (ACTs)

    Medline Plus

    Full Text Available ... NACFC Carolyn and C Richard Mattingly Leadership in Mental Health Care Award Mary M. Kontos Award NACFC Reflections ... help your infant or child manage their lung health, watch parents of children with CF and a respiratory therapist talk about the different techniques they use for airway clearance. ... Instagram Email Find a Clinical Trial Help us blaze ...

  7. Special irradiation techniques

    International Nuclear Information System (INIS)

    Colomez, Gerard; Veyrat, J.F.

    1981-01-01

    Irradiation trials conducted on materials-testing reactors should provide a better understanding of the phenomena which characterize the working and evolution in time of electricity-generating nuclear reactors. The authors begin by outlining the objectives behind experimental irradiation (applied to the various nuclear chains) and then describe the special techniques deployed to achieve these objectives [fr

  8. A video authentication technique

    International Nuclear Information System (INIS)

    Johnson, C.S.

    1987-01-01

    Unattended video surveillance systems are particularly vulnerable to the substitution of false video images into the cable that connects the camera to the video recorder. New technology has made it practical to insert a solid state video memory into the video cable, freeze a video image from the camera, and hold this image as long as desired. Various techniques, such as line supervision and sync detection, have been used to detect video cable tampering. The video authentication technique described in this paper uses the actual video image from the camera as the basis for detecting any image substitution made during the transmission of the video image to the recorder. The technique, designed for unattended video systems, can be used for any video transmission system where a two-way digital data link can be established. The technique uses similar microprocessor circuitry at the video camera and at the video recorder to select sample points in the video image for comparison. The gray scale value of these points is compared at the recorder controller and if the values agree within limits, the image is authenticated. If a significantly different image was substituted, the comparison would fail at a number of points and the video image would not be authenticated. The video authentication system can run as a stand-alone system or at the request of another system

  9. Airway Clearance Techniques (ACTs)

    Medline Plus

    Full Text Available ... how you can help your infant or child manage their lung health, watch parents of children with CF and a respiratory therapist talk about the different techniques they use for airway clearance. Facebook Twitter Email More Related Content Medications Autogenic Drainage ...

  10. Simple Driving Techniques

    DEFF Research Database (Denmark)

    Rosendahl, Mads

    2002-01-01

    -like language. Our aim is to extract a simple notion of driving and show that even in this tamed form it has much of the power of more general notions of driving. Our driving technique may be used to simplify functional programs which use function composition and will often be able to remove intermediate data...

  11. Airway Clearance Techniques (ACTs)

    Medline Plus

    Full Text Available ... Team Your cystic fibrosis care team includes a group of CF health care professionals who partner with ... Awards and Grants Career Development Awards Research Awards Training Awards CF ... Clearance Airway Clearance Techniques (ACTs) There are different ways to clear your ...

  12. Fault isolation techniques

    Science.gov (United States)

    Dumas, A.

    1981-01-01

    Three major areas that are considered in the development of an overall maintenance scheme of computer equipment are described. The areas of concern related to fault isolation techniques are: the programmer (or user), company and its policies, and the manufacturer of the equipment.

  13. ELECTROSPRAY, TECHNIQUE AND APPLICATIONS

    NARCIS (Netherlands)

    BRUINS, AP

    Electrospray makes use of ions present in electrically charged droplets in an aerosol. The generation of an aerosol by electrospray has already been published by Zeleny in 1917. The feasibility of electrospray as an ionization technique was demonstrated by Fenn and coworkers, and by a group of

  14. Safeguards techniques and equipment

    International Nuclear Information System (INIS)

    1997-01-01

    The current booklet is intended to give a full and balanced description of the techniques and equipment used for both nuclear material accountancy and containment and surveillance measures, and for the new safeguards measure of environmental sampling. As new verification measures continue to be developed, the material in the booklet will be periodically reviewed and updated versions issued. (author)

  15. The attribute measurement technique

    International Nuclear Information System (INIS)

    MacArthur, Duncan W.; Langner, Diana; Smith, Morag; Thron, Jonathan; Razinkov, Sergey; Livke, Alexander

    2010-01-01

    Any verification measurement performed on potentially classified nuclear material must satisfy two seemingly contradictory constraints. First and foremost, no classified information can be released. At the same time, the monitoring party must have confidence in the veracity of the measurement. An information barrier (IB) is included in the measurement system to protect the potentially classified information while allowing sufficient information transfer to occur for the monitoring party to gain confidence that the material being measured is consistent with the host's declarations, concerning that material. The attribute measurement technique incorporates an IB and addresses both concerns by measuring several attributes of the nuclear material and displaying unclassified results through green (indicating that the material does possess the specified attribute) and red (indicating that the material does not possess the specified attribute) lights. The attribute measurement technique has been implemented in the AVNG, an attribute measuring system described in other presentations at this conference. In this presentation, we will discuss four techniques used in the AVNG: (1) the 1B, (2) the attribute measurement technique, (3) the use of open and secure modes to increase confidence in the displayed results, and (4) the joint design as a method for addressing both host and monitor needs.

  16. Microwave Breast Imaging Techniques

    DEFF Research Database (Denmark)

    Zhurbenko, Vitaliy; Rubæk, Tonny

    2010-01-01

    This paper outlines the applicability of microwave radiation for breast cancer detection. Microwave imaging systems are categorized based on their hardware architecture. The advantages and disadvantages of various imaging techniques are discussed. The fundamental tradeoffs are indicated between...... various requirements to be fulfilled in the design of an imaging system for breast cancer detection and some strategies to overcome these limitations....

  17. Tendon 'turnover lengthening' technique.

    Science.gov (United States)

    Cerovac, S; Miranda, B H

    2013-11-01

    Tendon defect reconstruction is amongst the most technically challenging areas in hand surgery. Tendon substance deficiency reconstruction techniques include lengthening, grafting, two-stage reconstruction and tendon transfers, however each is associated with unique challenges over and above direct repair. We describe a novel 'turnover lengthening' technique for hand tendons that has successfully been applied to the repair of several cases, including a case of attritional flexor and traumatic extensor tendon rupture in two presented patients where primary tenorrhaphy was not possible. In both cases a good post-operative outcome was achieved, as the patients were happy having returned back to normal activities of daily living such that they were discharged 12 weeks post-operatively. Our technique avoids the additional morbidity and complications associated with grafting, transfers and two stage reconstructions. It is quick, simple and reproducible for defects not exceeding 3-4 cm, provides a means of immediate one stage reconstruction, no secondary donor site morbidity and does not compromise salvage by tendon transfer and/or two-stage reconstruction in cases of failure. To our knowledge no such technique has been previously been described to reconstruct such hand tendon defects. Crown Copyright © 2013. Published by Elsevier Ltd. All rights reserved.

  18. Advanced techniques in immunoassay

    International Nuclear Information System (INIS)

    Toth, G.

    1982-01-01

    A brief overview of the development history of radioimmunoassay and related techniques with their theory and practice are given. A comparison of radioimmunoassay (RIA), enzyme immunoassay (EIA), spin immunoassay (SIA), sequential saturation analysis (SSA) etc., based on their main parameters, and their fields of application and recent trends are presented. (Sz.J.)

  19. Merchandising Techniques and Libraries.

    Science.gov (United States)

    Green, Sylvie A.

    1981-01-01

    Proposes that libraries employ modern booksellers' merchandising techniques to improve circulation of library materials. Using displays in various ways, the methods and reasons for weeding out books, replacing worn book jackets, and selecting new books are discussed. Suggestions for learning how to market and 11 references are provided. (RBF)

  20. Airway Clearance Techniques (ACTs)

    Medline Plus

    Full Text Available ... and Their Families When There's More Than One Person With CF in the Same School Daily Life ... Awards and Grants Career Development Awards Research Awards Training Awards CF ... Clearance Airway Clearance Techniques (ACTs) There are different ways to clear your ...

  1. Electronic waste recycling techniques

    CERN Document Server

    Bernardes, Andréa

    2015-01-01

    This book presents an overview of the characterization of electronic waste. In addition, processing techniques for the recovery of metals, polymers and ceramics are described. This book serves as a source of information and as an educational technical reference for practicing scientists and engineers, as well as for students.

  2. Comparison with Other Techniques

    Science.gov (United States)

    Sacco, Giovanni Maria; Ferré, Sébastien; Tzitzikas, Yannis

    This chapter compares dynamic taxonomies with the other main approaches to information access and discusses analogies and differences. The approaches analyzed range from traditional retrieval paradigms, such as queries on structured data, to the most recent approaches, including the current effort on the Semantic Web: queries on structured data, and OLAP data analysis techniques;

  3. Airway Clearance Techniques (ACTs)

    Medline Plus

    Full Text Available ... infant or child manage their lung health, watch parents of children with CF and a respiratory therapist talk about the different techniques they use for airway ... Positive Expiratory Pressure High-Frequency Chest Wall Oscillation (the Vest) Follow ...

  4. 8. Algorithm Design Techniques

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 2; Issue 8. Algorithms - Algorithm Design Techniques. R K Shyamasundar. Series Article Volume 2 ... Author Affiliations. R K Shyamasundar1. Computer Science Group, Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai 400 005, India ...

  5. Airway Clearance Techniques (ACTs)

    Medline Plus

    Full Text Available ... Offer their tips for fitting ACTs into daily life Airway Clearance Techniques | Webcast To learn more about how you can help your infant or child manage their lung health, watch parents of children with CF and a respiratory therapist ...

  6. RUN LENGTH SYNCHRONIZATION TECHNIQUES

    Science.gov (United States)

    An important aspect of digital communications is the problem of determining efficient methods for acquiring block synchronization . In this paper we...utilizes an N-digit sync sequence as prefix to the data blocks. The results of this study show that this technique is a practical method for acquiring block synchronization .

  7. Analysis and analytical techniques

    Energy Technology Data Exchange (ETDEWEB)

    Batuecas Rodriguez, T [Department of Chemistry and Isotopes, Junta de Energia Nuclear, Madrid (Spain)

    1967-01-01

    The technology associated with the use of organic coolants in nuclear reactors depends to a large extent on the determination and control of their physical and chemical properties, and particularly on the viability, speed, sensitivity, precision and accuracy (depending on the intended usage) of the methods employed in detection and analytical determination. This has led to the study and development of numerous techniques, some specially designed for the extreme conditions involved in working with the types of product in question and others adapted from existing techniques. In the specific case of polyphenyl and hydropolyphenyl mixtures, which have been the principal subjects of study to date and offer greatest promise, the analytical problems are broadly as follows: Composition of initial product or virgin coolant composition of macro components and amounts of organic and inorganic impurities; Coolant during and after operation. Determination of gases and organic compounds produced by pyrolysis and radiolysis (degradation and polymerization products); Control of systems for purifying and regenerating the coolant after use. Dissolved pressurization gases; Detection of intermediate products during decomposition; these are generally very unstable (free radicals); Degree of fouling and film formation. Tests to determine potential formation of films; Corrosion of structural elements and canning materials; Health and safety. Toxicity, inflammability and impurities that can be activated. Although some of the above problems are closely interrelated and entail similar techniques, they vary as to degree of difficulty. Another question is the difficulty of distinguishing clearly between techniques for determining physical and physico-chemical properties, on one hand, and analytical techniques on the other. Any classification is therefore somewhat arbitrary (for example, in the case of dosimetry and techniques for determining mean molecular weights or electrical conductivity

  8. Nuclear techniques in agriculture

    International Nuclear Information System (INIS)

    Bhagwat, S.G.

    2012-01-01

    Crops provide us food grains and many other products. Demand for food and other agricultural products is increasing. There is also need for improvement of quality of the agricultural produce. There are several technologies in use for achieving the goal of increasing the quantity and quality of agricultural produce. Nuclear techniques provide us with an option which has certain advantages. The characteristics of crop plants are determined by the genetic make up of the plant. Traditionally the genetic make up was modified using conventional breeding techniques such as cross breeding to improve crops for yield, disease resistance, stress tolerance, resistance to insect pests or to improve quality. New varieties of crops are produced which replace the earlier ones and thus the demands are met. The process of development of new varieties is long and time consuming. Nuclear technique called mutation breeding provides an efficient way of breeding new varieties or improving the older ones. This technique merely enhances the process of occurrence of mutations. In nature mutations occur at a rate of approximately one in a million, while when mutations are induced using radiations such as gamma rays the efficiency of inducing mutations is enhanced. Useful mutations are selected, the mutants are evaluated and developed as a new variety. In the Nuclear Agriculture and Biotechnology Division (NA and BTD) this technique has been used to develop mutants of many crop plants. The mutants can be used to develop a variety directly or by using it in further breeding programme. Using these approaches the NA and BTD has developed 40 new varieties of crops such as groundnut, mungbean, urid, pigeon pea, mustard, soybean, sunflower, cowpea, jute. These varieties are developed in collaboration with other agricultural institutions and are popular among the farming community. The method of mutation breeding can be applied to many other crops for improvement. There is increasing interest among

  9. Managerial Techniques in Educational Administration.

    Science.gov (United States)

    Lane, John J.

    1983-01-01

    Management techniques developed during the past 20 years assume the rational bureaucratic model. School administration requires contingent techniques. Quality Circle, Theory Z, and the McKenzie 7-Framework are discussed as techniques to increase school productivity. (MD)

  10. Signal integrity characterization techniques

    CERN Document Server

    Bogatin, Eric

    2009-01-01

    "Signal Integrity Characterization Techniques" addresses the gap between traditional digital and microwave curricula all while focusing on a practical and intuitive understanding of signal integrity effects within the data transmission channel. High-speed interconnects such as connectors, PCBs, cables, IC packages, and backplanes are critical elements of differential channels that must be designed using today's most powerful analysis and characterization tools.Both measurements and simulation must be done on the device under test, and both activities must yield data that correlates with each other. Most of this book focuses on real-world applications of signal integrity measurements - from backplane for design challenges to error correction techniques to jitter measurement technologies. The authors' approach wisely addresses some of these new high-speed technologies, and it also provides valuable insight into its future direction and will teach the reader valuable lessons on the industry.

  11. [Molecular techniques in mycology].

    Science.gov (United States)

    Rodríguez-Tudela, Juan Luis; Cuesta, Isabel; Gómez-López, Alicia; Alastruey-Izquierdo, Ana; Bernal-Martínez, Leticia; Cuenca-Estrella, Manuel

    2008-11-01

    An increasing number of molecular techniques for the diagnosis of fungal infections have been developed in the last few years, due to the growing prevalence of mycoses and the length of time required for diagnosis when classical microbiological methods are used. These methods are designed to resolve the following aspects of mycological diagnosis: a) Identification of fungi to species level by means of sequencing relevant taxonomic targets; b) early clinical diagnosis of invasive fungal infections; c) detection of molecular mechanisms of resistance to antifungal agents; and d) molecular typing of fungi. Currently, these methods are restricted to highly developed laboratories. However, some of these techniques will probably be available in daily clinical practice in the near future.

  12. Review of halftoning techniques

    Science.gov (United States)

    Ulichney, Robert A.

    1999-12-01

    Digital halftoning remains an active area of research with a plethora of new and enhanced methods. While several fine overviews exist, this purpose of this paper is to review retrospectively the basic classes of techniques. Halftoning algorithms are presented by the nature of the appearance of resulting patterns, including white noise, recursive tessellation, the classical screen, and blue noise. The metric of radially averaged power spectra is reviewed, and special attention is paid to frequency domain characteristics. The paper concludes with a look at the components that comprise a complete image rendering system. In particular when the number of output levels is not restricted to be a power of 2. A very efficient means of multilevel dithering is presented based on scaling order- dither arrays. The case of real-time video rendering is considered where the YUV-to-RGB conversion is incorporated in the dithering system. Example illustrations are included for each of the techniques described.

  13. Anaerobic treatment techniques

    International Nuclear Information System (INIS)

    Boehnke, B.; Bischofsberger, W.; Seyfried, C.F.

    1993-01-01

    This practical and theoretical guide presents the current state of knowledge in anaerobic treatment of industrial effluents with a high organic pollutant load and sewage sludges resulting from the treatment of municipal and industrial waste water. Starting from the microbiological bases of anaerobic degradation processes including a description and critical evaluation of executed plants, the book evolves the process-technical bases of anaerobic treatment techniques, derives relative applications, and discusses these with reference to excuted examples. (orig./UWA). 232 figs [de

  14. Management of science technique

    International Nuclear Information System (INIS)

    Bae, Byeong Han; Lee, Gap Du

    2002-08-01

    This book mentions change of environment and management of technique, business environment in information age technology and management such as classification of technology, innovation of technology and meaning of technology management, item innovation and technology about meaning of item development, innovation and item development, creation of item concept and item development, process of product innovation, product activity, product innovation product innovation and technology, development of product innovation, technology and marketing innovation, innovation of skill of marketing information system and globalization.

  15. Advanced electron beam techniques

    International Nuclear Information System (INIS)

    Hirotsu, Yoshihiko; Yoshida, Yoichi

    2007-01-01

    After 100 years from the time of discovery of electron, we now have many applications of electron beam in science and technology. In this report, we review two important applications of electron beam: electron microscopy and pulsed-electron beam. Advanced electron microscopy techniques to investigate atomic and electronic structures, and pulsed-electron beam for investigating time-resolved structural change are described. (author)

  16. Emerging technology and techniques

    Directory of Open Access Journals (Sweden)

    Gopi Naveen Chander

    2015-01-01

    Full Text Available A technique of fabricating feldspathic porcelain pressable ingots was proposed. A 5 ml disposable syringe was used to condense the powder slurry. The condensed porcelain was sintered at 900΀C to produce porcelain ingots. The fabricated porcelain ingots were used in pressable ceramic machines. The technological advantages of pressable system improve the properties, and the fabricated ingot enhances the application of feldspathic porcelain.

  17. 4. Measuring technique

    International Nuclear Information System (INIS)

    2006-01-01

    It is noted that in nuclear medicine a most widely the scintillation detectors are applying. Action of these detectors is based on registration of light flares in visible and ultraviolet field arising in scintillator under ionizing radiation action. In the chapter following subchapters are included: gamma-spectrometer and gamma radiation detectors; counter of whole body; measuring of accumulated activity (uptake measurements); scanner; scintillation chamber; single-photon emission computed tomography; positron emission computed tomography; magnet resonance tomography; computer technique, images making

  18. Project Management Techniques

    OpenAIRE

    Mihalache Anita; Salagean Liana

    2010-01-01

    Project management is a technique that can aid in the planning, scheduling, and monitoring of complex projects characterized by numerous, non repetitive jobs called activities. Examples of projects that would use project management include: - developing a mass rapid – transit system for a metropolitan area; - organizing the relocation of a corporate headquarters; - planning the production of a concert, film, or play; - developing and marketing a new automobile; - constructing a high – rise of...

  19. Techniques in polarization physics

    International Nuclear Information System (INIS)

    Clausnitzer, G.

    1974-01-01

    A review of the current status of the technical tools necessary to perform different kinds of polarization experiments is presented, and the absolute and relative accuracy with which data can be obtained is discussed. A description of polarized targets and sources of polarized fast neutrons is included. Applications of polarization techniques to other fields is mentioned briefly. (14 figures, 3 tables, 110 references) (U.S.)

  20. Pipeline Leak Detection Techniques

    OpenAIRE

    Chis, Timur

    2009-01-01

    Leak detection systems range from simple, visual line walking and checking ones to complex arrangements of hard-ware and software. No one method is universally applicable and operating requirements dictate which method is the most cost effective. The aim of the paper is to review the basic techniques of leak detection that are currently in use. The advantages and disadvantages of each method are discussed and some indications of applicability are outlined.

  1. Pipeline Leak Detection Techniques

    Directory of Open Access Journals (Sweden)

    Timur Chis, Ph.D., Dipl.Eng.

    2007-01-01

    Full Text Available Leak detection systems range from simple, visual line walking and checking ones to complex arrangements of hard-ware and software. No one method is universally applicable and operating requirements dictate which method is the most cost effective. The aim of the paper is to review the basic techniques of leak detection that are currently in use. The advantages and disadvantages of each method are discussed and some indications of applicability are outlined.

  2. Nuclear techniques in hydrology

    International Nuclear Information System (INIS)

    Bahadur, J.; Saxena, R.K.

    1974-01-01

    Several types of sealed radioactive sources, stable isotopes and water soluble radioactive tracers, used by different investigators, have been listed for studying the dynamic behaviour of water in nature. In general, all the facets of hydrological cycle, are amenable to these isotopic techniques. It is recommended that environmental isotopes data collection should be started for studying the water balance and also the interrelationships between surface and subsurface water in various rivers catchments with changing physical, geological and climatic parameters. (author)

  3. Adaptive Backoff Synchronization Techniques

    Science.gov (United States)

    1989-07-01

    Percentage of synchronization and non- synchronisation references that cause invalidations in directory schemes with 2, 3, 4, 5, and 64 pointers...processors to arrive. The slight relative increase of synchronisation overhead in all cases when going from two to five pointers is because synchronization ...MASSACHUSETTS INSTITUTE OF TECHNOLOGY VLSI PUBLICATIONS q~JU VLSI Memo No. 89-547 It July 1989 Adaptive Backoff Synchronization Techniques Anant

  4. Empirical techniques in finance

    CERN Document Server

    Bhar, Ramaprasad

    2005-01-01

    This book offers the opportunity to study and experience advanced empi- cal techniques in finance and in general financial economics. It is not only suitable for students with an interest in the field, it is also highly rec- mended for academic researchers as well as the researchers in the industry. The book focuses on the contemporary empirical techniques used in the analysis of financial markets and how these are implemented using actual market data. With an emphasis on Implementation, this book helps foc- ing on strategies for rigorously combing finance theory and modeling technology to extend extant considerations in the literature. The main aim of this book is to equip the readers with an array of tools and techniques that will allow them to explore financial market problems with a fresh perspective. In this sense it is not another volume in eco- metrics. Of course, the traditional econometric methods are still valid and important; the contents of this book will bring in other related modeling topics tha...

  5. Computer Assisted Audit Techniques

    Directory of Open Access Journals (Sweden)

    Eugenia Iancu

    2007-01-01

    Full Text Available From the modern point of view, audit takes intoaccount especially the information systems representingmainly the examination performed by a professional asregards the manner for developing an activity by means ofcomparing it to the quality criteria specific to this activity.Having as reference point this very general definition ofauditing, it must be emphasized that the best known segmentof auditing is the financial audit that had a parallel evolutionto the accountancy one.The present day phase of developing the financial audithas as main trait the internationalization of the accountantprofessional. World wide there are multinational companiesthat offer services in the financial auditing, taxing andconsultancy domain. The auditors, natural persons and auditcompanies, take part at the works of the national andinternational authorities for setting out norms in theaccountancy and auditing domain.The computer assisted audit techniques can be classified inseveral manners according to the approaches used by theauditor. The most well-known techniques are comprised inthe following categories: testing data techniques, integratedtest, parallel simulation, revising the program logics,programs developed upon request, generalized auditsoftware, utility programs and expert systems.

  6. Techniques for Wireless Applications

    KAUST Repository

    Gaaloul, Fakhreddine

    2012-05-01

    Switching techniques have been first proposed as a spacial diversity techniques. These techniques have been shown to reduce considerably the processing load while letting multi-antenna systems achieve a specific target performance. In this thesis, we take a different look at the switching schemes by implementing them for different other wireless applications. More specifically, this thesis consists of three main parts, where the first part considers a multiuser environment and an adaptive scheduling algorithm based on the switching with post-selection scheme for statistically independent but non-identically distributed channel conditions. The performance of this switched based scheduler is investigated and a multitude of performance metrics are presented. In a second part, we propose and analyze the performance of three switched-based algorithms for interference reduction in the downlink of over-loaded femtocells. For instance, performance metrics are derived in closed-form and these metrics are used to compare these three proposed schemes. Finally in a third part, a switch based opportunistic channel access scheme is proposed for a cognitive radio system and its performance is analyzed in terms of two new proposed metrics namely the average cognitive radio access and the waiting time duration.

  7. The simultaneous boost technique

    International Nuclear Information System (INIS)

    Lebesque, J.V.; Keus, R.B.

    1991-01-01

    Simultaneous boost technique in radiotherapy consists of delivering the boost treatment (additional doses to reduced volumes) simultaneously with the basic (large-field) treatment for all treatment sessions. Both the dose per fraction delivered by basic-treatment fields and by boost-treatment fields have to be reduced to end up with the same total dose in boost volume as in the original schedule, where basic treatment preceded boost treatment. These dose reductions and corresponding weighting factors have been calculated using the linear-quadratic (LQ) model and the concept of Normalized Total Dose (NTD). Relative NTD distributions were computed to evaluate the dose distributions resulting for the simultaneous boost technique with respect to acute and late normal tissue damage and tumor control. For the example of treatment of prostate cancer the weighting factors were calculated on basis of NTD for late normal tissue damage. For treatment of oropharyngeal cancer NTD for acute and normal tissue damage was used to determine the weighting factors. In this last example a theoretical sparing of late normal tissue damage can be demonstrated. Another advantage of simultaneous boost technique is that megavoltage images of the large basic-treatment fields facilitates the determination of the position of the patient with respect to the small boost-treatment fields. (author). 42 refs., 8 figs

  8. Vibration transducer calibration techniques

    Science.gov (United States)

    Brinkley, D. J.

    1980-09-01

    Techniques for the calibration of vibration transducers used in the Aeronautical Quality Assurance Directorate of the British Ministry of Defence are presented. Following a review of the types of measurements necessary in the calibration of vibration transducers, the performance requirements of vibration transducers, which can be used to measure acceleration, velocity or vibration amplitude, are discussed, with particular attention given to the piezoelectric accelerometer. Techniques for the accurate measurement of sinusoidal vibration amplitude in reference-grade transducers are then considered, including the use of a position sensitive photocell and the use of a Michelson laser interferometer. Means of comparing the output of working-grade accelerometers with that of previously calibrated reference-grade devices are then outlined, with attention given to a method employing a capacitance bridge technique and a method to be used at temperatures between -50 and 200 C. Automatic calibration procedures developed to speed up the calibration process are outlined, and future possible extensions of system software are indicated.

  9. Enseignement technique/Technical Training

    CERN Multimedia

    1998-01-01

    Bureautique et techniques administratives/Office Automation & Administrative Techniques - Premiers pas/Getting started - E-Mail - Management Tools - WWW - Applications bureautiques/Office applications

  10. Multimodality imaging techniques.

    Science.gov (United States)

    Martí-Bonmatí, Luis; Sopena, Ramón; Bartumeus, Paula; Sopena, Pablo

    2010-01-01

    In multimodality imaging, the need to combine morphofunctional information can be approached by either acquiring images at different times (asynchronous), and fused them through digital image manipulation techniques or simultaneously acquiring images (synchronous) and merging them automatically. The asynchronous post-processing solution presents various constraints, mainly conditioned by the different positioning of the patient in the two scans acquired at different times in separated machines. The best solution to achieve consistency in time and space is obtained by the synchronous image acquisition. There are many multimodal technologies in molecular imaging. In this review we will focus on those multimodality image techniques more commonly used in the field of diagnostic imaging (SPECT-CT, PET-CT) and new developments (as PET-MR). The technological innovations and development of new tracers and smart probes are the main key points that will condition multimodality image and diagnostic imaging professionals' future. Although SPECT-CT and PET-CT are standard in most clinical scenarios, MR imaging has some advantages, providing excellent soft-tissue contrast and multidimensional functional, structural and morphological information. The next frontier is to develop efficient detectors and electronics systems capable of detecting two modality signals at the same time. Not only PET-MR but also MR-US or optic-PET will be introduced in clinical scenarios. Even more, MR diffusion-weighted, pharmacokinetic imaging, spectroscopy or functional BOLD imaging will merge with PET tracers to further increase molecular imaging as a relevant medical discipline. Multimodality imaging techniques will play a leading role in relevant clinical applications. The development of new diagnostic imaging research areas, mainly in the field of oncology, cardiology and neuropsychiatry, will impact the way medicine is performed today. Both clinical and experimental multimodality studies, in

  11. Applied ALARA techniques

    International Nuclear Information System (INIS)

    Waggoner, L.O.

    1998-01-01

    The presentation focuses on some of the time-proven and new technologies being used to accomplish radiological work. These techniques can be applied at nuclear facilities to reduce radiation doses and protect the environment. The last reactor plants and processing facilities were shutdown and Hanford was given a new mission to put the facilities in a safe condition, decontaminate, and prepare them for decommissioning. The skills that were necessary to operate these facilities were different than the skills needed today to clean up Hanford. Workers were not familiar with many of the tools, equipment, and materials needed to accomplish:the new mission, which includes clean up of contaminated areas in and around all the facilities, recovery of reactor fuel from spent fuel pools, and the removal of millions of gallons of highly radioactive waste from 177 underground tanks. In addition, this work has to be done with a reduced number of workers and a smaller budget. At Hanford, facilities contain a myriad of radioactive isotopes that are 2048 located inside plant systems, underground tanks, and the soil. As cleanup work at Hanford began, it became obvious early that in order to get workers to apply ALARA and use hew tools and equipment to accomplish the radiological work it was necessary to plan the work in advance and get radiological control and/or ALARA committee personnel involved early in the planning process. Emphasis was placed on applying,ALARA techniques to reduce dose, limit contamination spread and minimize the amount of radioactive waste generated. Progress on the cleanup has,b6en steady and Hanford workers have learned to use different types of engineered controls and ALARA techniques to perform radiological work. The purpose of this presentation is to share the lessons learned on how Hanford is accomplishing radiological work

  12. Applied ALARA techniques

    Energy Technology Data Exchange (ETDEWEB)

    Waggoner, L.O.

    1998-02-05

    The presentation focuses on some of the time-proven and new technologies being used to accomplish radiological work. These techniques can be applied at nuclear facilities to reduce radiation doses and protect the environment. The last reactor plants and processing facilities were shutdown and Hanford was given a new mission to put the facilities in a safe condition, decontaminate, and prepare them for decommissioning. The skills that were necessary to operate these facilities were different than the skills needed today to clean up Hanford. Workers were not familiar with many of the tools, equipment, and materials needed to accomplish:the new mission, which includes clean up of contaminated areas in and around all the facilities, recovery of reactor fuel from spent fuel pools, and the removal of millions of gallons of highly radioactive waste from 177 underground tanks. In addition, this work has to be done with a reduced number of workers and a smaller budget. At Hanford, facilities contain a myriad of radioactive isotopes that are 2048 located inside plant systems, underground tanks, and the soil. As cleanup work at Hanford began, it became obvious early that in order to get workers to apply ALARA and use hew tools and equipment to accomplish the radiological work it was necessary to plan the work in advance and get radiological control and/or ALARA committee personnel involved early in the planning process. Emphasis was placed on applying,ALARA techniques to reduce dose, limit contamination spread and minimize the amount of radioactive waste generated. Progress on the cleanup has,b6en steady and Hanford workers have learned to use different types of engineered controls and ALARA techniques to perform radiological work. The purpose of this presentation is to share the lessons learned on how Hanford is accomplishing radiological work.

  13. Electricity demand forecasting techniques

    International Nuclear Information System (INIS)

    Gnanalingam, K.

    1994-01-01

    Electricity demand forecasting plays an important role in power generation. The two areas of data that have to be forecasted in a power system are peak demand which determines the capacity (MW) of the plant required and annual energy demand (GWH). Methods used in electricity demand forecasting include time trend analysis and econometric methods. In forecasting, identification of manpower demand, identification of key planning factors, decision on planning horizon, differentiation between prediction and projection (i.e. development of different scenarios) and choosing from different forecasting techniques are important

  14. High voltage test techniques

    CERN Document Server

    Kind, Dieter

    2001-01-01

    The second edition of High Voltage Test Techniques has been completely revised. The present revision takes into account the latest international developments in High Voltage and Measurement technology, making it an essential reference for engineers in the testing field.High Voltage Technology belongs to the traditional area of Electrical Engineering. However, this is not to say that the area has stood still. New insulating materials, computing methods and voltage levels repeatedly pose new problems or open up methods of solution; electromagnetic compatibility (EMC) or components and systems al

  15. Evolution of Opf techniques

    International Nuclear Information System (INIS)

    Berizzi, A.; Bovo, C.; Delfanti, M.

    2001-01-01

    The paper analyses some possible applications of Opf techniques to the new market scenario of electric systems. New control tools (the adoption of Facts devices, or the use of correct economical signals related to nodal prices) are introduced. As the technical and economic requirements of the market could give rise to mutual conflict, the use of Multi objective Optimisation (MO) is envisaged. MO allows the management of different objectives and makes it easier to take a decision, as it gives indications on the consequences of the choice with respect to all the objective functions considered [it

  16. Psoriatic arthritis: imaging techniques

    Directory of Open Access Journals (Sweden)

    E. Lubrano

    2012-06-01

    Full Text Available Imaging techniques to assess psoriatic arthritis (PsA include radiography, ultrasonography (US, magnetic resonance imaging (MRI, computed tomography (CT and bone scintigraphy. The radiographic hallmark of PsA is the combination of destructive changes (joint erosions, tuft resorption, osteolysis with bone proliferation (including periarticular and shaft periostitis, ankylosis, spur formation and non-marginal syndesmophytes. US has an increasing important role in the evaluation of PsA. In fact, power Doppler US is useful mainly for its ability to assess musculoskeletal (joints, tendons, entheses and cutaneous (skin and nails involvement, to monitor efficacy of therapy and to guide steroid injections at the level of inflamed joints, tendon sheaths and entheses. MRI allows direct visualization of inflammation in peripheral and axial joints, and peripheral and axial entheses, and has dramatically improved the possibilities for early diagnosis and objective monitoring of the disease process in PsA. MRI has allowed explaining the relationships among enthesitis, synovitis and osteitis in PsA, supporting a SpA pattern of inflammation where enthesitis is the primary target of inflammation. CT has little role in assessment of peripheral joints, but it may be useful in assessing elements of spine disease. CT accuracy is similar to MRI in assessment of erosions in sacroiliac joint involvement, but CT is not as effective in detecting synovial inflammation. Bone scintigraphy lacks specificity and is now supplanted with US and MRI techniques.

  17. Single-borehole techniques

    International Nuclear Information System (INIS)

    Klotz, D.; Moser, H.; Trimborn, P.

    1978-01-01

    Proceeding on the theoretical considerations and on the experience and practice derived from laboratory and field testing, a system consisting of tracer injection units, detector units, measuring probe units and packers is presented, from which the different borehole probes required can be combined. A couple of examples of recent applications shows the position of the Single-Borehole Techniques with respect to the traditional methods used for the measurement of the ground-water flow. A confrontation of the permeabilities of different aquifers consents, both on the basis of the Single-Borehole Techniques as by pumping experiments, the determination of the reliability of the Point-Dilution-Method. The Point-Dilution-Method is giving information about the vertical and horizontal distribution of the permeabilities in an aquifer. By measuring the vertical current in two karst wells, the tributary horizons of a well have been determined, which gave valuable information for the subsequent well construction. Local leakages could be detected by measuring the vertical flow rate through observation wells arranged along a grout curtain erected on both sides of the retaining barrage of the Keban dam. (orig.) [de

  18. A Technique: Exposure Therapy

    Directory of Open Access Journals (Sweden)

    Serkan AKKOYUNLU

    2013-07-01

    Full Text Available Introduction: Exposure with response prevention is an effective treatment for all anxiety disorders. According to the behavioral learning theories, fears which are conditioned via classical conditioning are reinforced by respondent conditioning. Avoidance and safety seeking behaviors prevent disconfirmation of anxious beliefs. In exposure client faces stimulates or cues that elicit fear or distress, by this avoidance is inhibited. Clients are also encouraged to resists performing safety seeking behaviors or rituals that they utilize to reduce fear or distress. Accomplishing these habituation or extinction is achieved. In addition to this clients learn that feared consequences does not realize or not harmful as they believed by experiencing. Emotional processing is believed to be the mechanism of change in exposure.Objective: The aim of this review is to provide a definition of exposure and its effectiveness briefly, and describe how to implement exposure, its steps and remarkable aspects using. Exposure therapies and treatments that involve exposure are proved to be effective in all anxiety disorders. Exposure therapy can be divided in three parts: Assessment and providing a treatment rationale, creating an exposure hierarchy and response prevention plan, implementing exposure sessions. Clients must also continue to perform exposure between sessions. Therapy transcripts are also provided to exemplify these parts. Conclusion: Exposure with response prevention is a basic and effective technique. Every cognitive behavior therapist must be able to implement this technique and be cognizant of pearls of this procedure.

  19. Nuclear techniques in medicine

    International Nuclear Information System (INIS)

    Basson, J.K.

    1984-01-01

    The use of nuclear techniques in medicine has, also in South Africa, increased enormously, especially as regards diagnosis and reseach. In 1983 in vivo tests with radioisotopes were carried out and also in vitro tests, mainly by radioimmunoassay. Therapy with open and sealed radioactive sources was concentrated mainly on cancer treatments. In 1983 NUCOR supported 83 research projects in the life sciences. Imaging of organs or tissues in the body with nuclear techniques has developed into the most important application of nuclear medicine, with the development of even more specific labelled compounds as the main objective. Radioimmunoassay is at an exciting watershed, now that labelled monoclonal antibodies with high specificity for early diagnosis (also in cancer) and even localised radiotherapy have become available. The establishment of the 200 MeV open-sector cyclotron by the National Accelerator Centre also for medical purposes will, in addition to the large-scale production of the protonrich isotopes, also make a substantial contribution to radiotherapy with nuclear particles such as neutrons, protons and helium-3

  20. Techniques de hacking

    CERN Document Server

    Erickson, Jon

    2008-01-01

    Dans cet ouvrage, Jon Erickson présente les bases de la programmation en C du point de vue du hacker et dissèque plusieurs techniques de hacking, passées et actuelles, afin de comprendre comment et pourquoi elles fonctionnent. Même si vous ne savez pas programmer, ce livre vous donnera une vue complète de la programmation, de l'architecture des machines, des communications réseau et des techniques de hacking existantes. Associez ces connaissances à l'environnement Linux fourni et laissez libre cours à votre imagination. Avec ce livre vous apprendrez à : • programmer les ordinateurs en C, en assembleur et avec des scripts shell ; • inspecter les registres du processeur et la mémoire système avec un débogueur afin de comprendre précisément ce qui se passe ; Vous découvrirez comment les hackers parviennent à : • corrompre la mémoire d'un système, en utilisant les débordements de tampons et les chaînes de format, pour exécuter un code quelconque ; • surpasser les mesures de sécurit...

  1. ALMA High Frequency Techniques

    Science.gov (United States)

    Meyer, J. D.; Mason, B.; Impellizzeri, V.; Kameno, S.; Fomalont, E.; Chibueze, J.; Takahashi, S.; Remijan, A.; Wilson, C.; ALMA Science Team

    2015-12-01

    The purpose of the ALMA High Frequency Campaign is to improve the quality and efficiency of science observing in Bands 8, 9, and 10 (385-950 GHz), the highest frequencies available to the ALMA project. To this end, we outline observing modes which we have demonstrated to improve high frequency calibration for the 12m array and the ACA, and we present the calibration of the total power antennas at these frequencies. Band-to-band (B2B) transfer and bandwidth switching (BWSW), techniques which improve the speed and accuracy of calibration at the highest frequencies, are most necessary in Bands 8, 9, and 10 due to the rarity of strong calibrators. These techniques successfully enable increased signal-to-noise on the calibrator sources (and better calibration solutions) by measuring the calibrators at lower frequencies (B2B) or in wider bandwidths (BWSW) compared to the science target. We have also demonstrated the stability of the bandpass shape to better than 2.4% for 1 hour, hidden behind random noise, in Band 9. Finally, total power observing using the dual sideband receivers in Bands 9 and 10 requires the separation of the two sidebands; this procedure has been demonstrated in Band 9 and is undergoing further testing in Band 10.

  2. Neutron detection technique

    International Nuclear Information System (INIS)

    Oblath, N.S.; Poon, A.W.P.

    2000-01-01

    The Sudbury Neutrino Observatory (SNO) has the ability to measure the total flux of all active flavors of neutrinos using the neutral current reaction, whose signature is a neutron. By comparing the rates of the neutral current reaction to the charged current reaction, which only detects electron neutrinos, one can test the neutrino oscillation hypothesis independent of solar models. It is necessary to understand the neutron detection efficiency of the detector to make use of the neutral current reaction. This report demonstrates a coincidence technique to identify neutrons emitted from the 252 Cf neutron calibration source. The source releases on average four neutrons when a 252 Cf nucleus spontaneously fissions. Each neutron is detected as a separate event when the neutron is captured by a deuteron, releasing a gamma ray of approximately 6.25 MeV. This gamma ray is in turn detected by the photomultiplier tube (PMT) array. By investigating the time and spatial separation between neutron-like events, it is possible to obtain a pure sample of neutrons for calibration study. Preliminary results of the technique applied to two calibration runs are presented

  3. Isotope techniques for hydrology

    International Nuclear Information System (INIS)

    1964-01-01

    In the body of the Panel's report specific conclusions and recommendations are presented in the context of each subject. The general consensus of the Panel is as follows: by the study of this report, the 1961 Panel report, the Proceedings of the March 1963 Tokyo Symposium and other reports of research and technological advances, isotope-technique applications to hydrologic problems have provided some useful avenues for understanding the nature of the hydrologic cycle and in the solution of specific engineering problems. Some techniques are developed thoroughly enough for fairly routine application as tools for use in the solution of practical problems, but further research and development is needed on other concepts to determined whether or not they can be beneficially applied to either research or engineering problems. A concerted effort is required on the part of both hydrologists and isotope specialists working as teams to assure that proper synthesis of scientific advances in the respective fields and translation of these advances into practical technology is achieved

  4. Image Improvement Techniques

    Science.gov (United States)

    Shine, R. A.

    1997-05-01

    Over the last decade, a repertoire of techniques have been developed and/or refined to improve the quality of high spatial resolution solar movies taken from ground based observatories. These include real time image motion corrections, frame selection, phase diversity measurements of the wavefront, and extensive post processing to partially remove atmospheric distortion. Their practical application has been made possible by the increasing availability and decreasing cost of large CCD's with fast digital readouts and high speed computer workstations with large memories. Most successful have been broad band (0.3 to 10 nm) filtergram movies which can use exposure times of 10 to 30 ms, short enough to ``freeze'' atmospheric motions. Even so, only a handful of movies with excellent image quality for more than a hour have been obtained to date. Narrowband filtergrams (about 0.01 nm), such as those required for constructing magnetograms and Dopplergrams, have been more challenging although some single images approach the quality of the best continuum images. Some promising new techniques and instruments, together with persistence and good luck, should continue the progress made in the last several years.

  5. Isotope techniques for hydrology

    Energy Technology Data Exchange (ETDEWEB)

    1964-01-01

    In the body of the Panel's report specific conclusions and recommendations are presented in the context of each subject. The general consensus of the Panel is as follows: by the study of this report, the 1961 Panel report, the Proceedings of the March 1963 Tokyo Symposium and other reports of research and technological advances, isotope-technique applications to hydrologic problems have provided some useful avenues for understanding the nature of the hydrologic cycle and in the solution of specific engineering problems. Some techniques are developed thoroughly enough for fairly routine application as tools for use in the solution of practical problems, but further research and development is needed on other concepts to determined whether or not they can be beneficially applied to either research or engineering problems. A concerted effort is required on the part of both hydrologists and isotope specialists working as teams to assure that proper synthesis of scientific advances in the respective fields and translation of these advances into practical technology is achieved.

  6. Decision Analysis Technique

    Directory of Open Access Journals (Sweden)

    Hammad Dabo Baba

    2014-01-01

    Full Text Available One of the most significant step in building structure maintenance decision is the physical inspection of the facility to be maintained. The physical inspection involved cursory assessment of the structure and ratings of the identified defects based on expert evaluation. The objective of this paper is to describe present a novel approach to prioritizing the criticality of physical defects in a residential building system using multi criteria decision analysis approach. A residential building constructed in 1985 was considered in this study. Four criteria which includes; Physical Condition of the building system (PC, Effect on Asset (EA, effect on Occupants (EO and Maintenance Cost (MC are considered in the inspection. The building was divided in to nine systems regarded as alternatives. Expert's choice software was used in comparing the importance of the criteria against the main objective, whereas structured Proforma was used in quantifying the defects observed on all building systems against each criteria. The defects severity score of each building system was identified and later multiplied by the weight of the criteria and final hierarchy was derived. The final ranking indicates that, electrical system was considered the most critical system with a risk value of 0.134 while ceiling system scored the lowest risk value of 0.066. The technique is often used in prioritizing mechanical equipment for maintenance planning. However, result of this study indicates that the technique could be used in prioritizing building systems for maintenance planning

  7. Information hiding technique

    Science.gov (United States)

    Younger, Michael; Budulas, Peter P.; Young, Stuart H.

    2002-08-01

    Spread spectrum communication techniques have been recognized as a viable method to gain an advantage in interference environments. Many military-oriented systems have been initiated, and some civil systems have been attempted. Spread spectrum allows the ability to hide the signal of interest below or in the noise floor, so as not to be detected. A spread spectrum system is one in which the transmitted signal is spread over a wide frequency band, much wider, in fact, than the minimum bandwidth required to transmit the information being sent. We at Army Research Lab (ARL) are proposing using the same technique on the Internet with port hopping. The information would be transmitted in data packets over multiple ports. The port used would vary per packet or per session basis. This port hopping gives you and the recipients the ability to take datagram's and spread them out over a multitude of ports. This will hide information among the Internet noise. This will allow trusted communications between the transmitter and receiver because of the port coding sequence. There are 64K possible ports to span datagram. Jamming of transmission would be limiting the ability of the sniffer/listener. Also, the listener will find it difficult to use a man in the middle attach, since the data will be spread over multiple ports and only the receiver and transmitter will know the specific port sequencing for the datagram.

  8. Underwater cutting techniques developments

    International Nuclear Information System (INIS)

    Bach, F.-W.

    1990-01-01

    The primary circuit structures of different nuclear powerplants are constructed out of stainless steels, ferritic steels, plated ferritic steels and alloys of aluminium. According to the level of the specific radiation of these structures, it is necessary for dismantling to work with remote controlled cutting techniques. The most successful way to protect the working crew against exposure of radiation is to operate underwater in different depths. The following thermal cutting processes are more or less developed to work under water: For ferritic steels only - flame cutting; For ferritic steels, stainless steels, cladded steels and aluminium alloys - oxy-arc-cutting, arc-waterjet-cutting with a consumable electrode, arc-saw-cutting, plasma-arc-cutting and plasma-arc-saw. The flame cutting is a burning process, all the other processes are melt-cutting processes. This paper explains the different techniques, giving a short introduction of the theory, a discussion of the possibilities with the advantages and disadvantages of these processes giving a view into the further research work in this interesting field. (author)

  9. Nuclear techniques in industry

    International Nuclear Information System (INIS)

    Barnette, P.

    The long term development and successful utilization of the Tongonan geothermal field for electric power generation is ultimately a function of the response of the reservoir to extensive exploitation. A field drawdown test of several years duration has been planned to test this response. A number of nuclear chemical techniques have been incorporated into this to assist in quantitatively tracing the subsurface movements of both reservoir and reinjected fluids; and to provide an early warning of changes in the physical and chemical properties of the reservoir fluids with respect to natural recharge. The programme will be implemented by Philippine Atomic Energy Commission (PAEC) under contract to Philippine National Oil Company - Energy Development Corporation (PNOC-EDC). (author)

  10. Advanced enrichment techniques

    International Nuclear Information System (INIS)

    Johnson, A.

    1988-01-01

    BNFL is in a unique position in that it has commercial experience of diffusion enrichment, and of centrifuge enrichment through its associate company Urenco. In addition BNFL is developing laser enrichment techniques as part of a UK development programme in this area. The paper describes the development programme which led to the introduction of competitive centrifuge enrichment technology by Urenco and discusses the areas where improvements have and will continue to be made in the centrifuge process. It also describes the laser development programme currently being undertaken in the UK. The paper concludes by discussing the relative merits of the various methods of uranium enrichment, with particular reference to the enrichment market likely to obtain over the rest of the century

  11. [Therapeutic education didactic techniques].

    Science.gov (United States)

    Valverde, Maite; Vidal, Mercè; Jansa, Margarida

    2012-10-01

    This article includes an introduction to the role of Therapeutic Education for Diabetes treatment according to the recommendations of the American Diabetes Association (ADA), the Diabetes Education Study Group (DESG) of the "European Association for Study of Diabetes (EASD) and the clinical Practice Guidelines (CPG) of the Spanish Ministry of Health. We analyze theoretical models and the differences between teaching vs. learning as well as current trends (including Internet), that can facilitate meaningful learning of people with diabetes and their families and relatives. We analyze the differences, similarities, advantages and disadvantages of individual and group education. Finally, we describe different educational techniques (metaplan, case method, brainstorming, role playing, games, seminars, autobiography, forums, chats,..) applicable to individual, group or virtual education and its application depending on the learning objective.

  12. Technique murale picturale

    Directory of Open Access Journals (Sweden)

    Claude Coupry

    2009-09-01

    Full Text Available Après des études remarquables publiées, entre autres, dans Peindre à Auxerre au Moyen Âge, IXe-XIVe siècles, l’étude technique et analytique des peintures murales n’avait pas donné lieu à de nouvelles recherches méthodologiques en dépit des travaux de terrain (Souvigny, Stavelot… où l’archéologie du bâti avait permis des rencontres entre archéologues, historiens de l’art et restaurateurs particulièrement impliqués pour la période qui nous intéresse, de la basse Antiquité au haut Moyen Âge.Ce...

  13. The Sterile Insect Technique

    International Nuclear Information System (INIS)

    Kiragu, J.

    2006-01-01

    Insect pests have caused an increasing problem in agriculture and human health through crop losses and disease transmission to man and livestock. Intervention to ensure food security and human health has relied on Integrated Pest Management (IPM) strategies to keep the pests population below economic injury levels. IPM integrate a variety of methods, but there has been over-reliance on chemical control following the discovery of insecticidal properties of DDT. It is now realized that, maintaining pest populations at controlled levels is unsustainable and eradication options is now being considered. Although the Sterile Insect Technique(SIT) could be used for insect suppression, it is gaining favour in the elimination (eradication) of the target pest population through Areawide-based IPM (Author)

  14. Advanced enrichment techniques

    International Nuclear Information System (INIS)

    Johnson, A.

    1987-01-01

    BNFL is in a unique position in that it has commercial experience of diffusion enrichment, and of centrifuge enrichment through its associate company Urenco. In addition BNFL is developing laser enrichment techniques as part of a UK development programme in this area. The paper describes the development programme which led to the introduction of competitive centrifuge enrichment technology by Urenco and discusses the areas where improvements have and will continue to be made in the centrifuge process. It also describes the laser development programme currently being undertaken in the UK. The paper concludes by discussing the relative merits of the various methods of uranium enrichment, with particular reference to the enrichment market likely to obtain over the rest of the century. (author)

  15. Immunoassay separation technique

    International Nuclear Information System (INIS)

    1977-01-01

    A method for effecting the immunoassay of a multiplicity of samples, each possibly containing an antigen or an antibody to be assayed, is discussed. Each sample is incubated with a solution containing a detectable antigen or antibody to form a multiplicity of mixtures, each mixture containing as components antigen-antibody, non-complexed antigen and non-complexed antibody. At least one of the components of the said mixture is separated by adsorption. There after, quantity of detectable antigen or antibody is detected in one of the non-adsorbed portions of the mixture. An improvement, compared to other techniques, is the continuous and sequential separation of at least one component, which is intended to be separated from each said multiplicity of mixtures

  16. Mouldroom techniques for teletherapy

    International Nuclear Information System (INIS)

    2004-01-01

    Mould room techniques are necessary to get the best from teletherapy treatment. They are directed at: Ensuring that the part of the patient being treated remains in the same position from start to end of a fraction of radiotherapy. Ensuring that the fields, as originally imaged and planned, can be accurately reproduced for each fraction. Ensuring that, if more than one planned volume is treated, these volumes maintain a constant, reproducible relationship to each other. Deriving contours for planning teletherapy. Facilitating accuracy of setting up individual fields with respect to position on the patient and treatment unit. Fabricating and mounting blocks or shields within any field that will adequately and reproducibly shield healthy tissue or sensitive organs. Fabricating and mounting compensators and bolus material within any field that will adequately and reproducibly modify the beam as required. Immobilisation is approached initially by assessing an anatomical region, the disease and the favoured treatment machine. The versatility of each technique to accomplish immobilisation for various purposes is addressed. Immobilisation is most commonly used in the head and neck region for the treatment of cancers of the oral and nasal passages and the treatment of brain tumours. As this part of the anatomy is very flexible, the immobilisation device must not only ensure that the head is kept in a symmetrical position, but also that the degree of flexion or extension of the neck (needed for treating a pituitary as opposed to a larynx) is maintained. Sensitive structures in that region are predominantly the eyes and spinal cord but on occasions a parotid salivary gland or part of the brain may require limitation of the dose. This may be achieved by planning the teletherapy beams with shielding blocks within selected fields

  17. Mouldroom techniques for teletherapy

    International Nuclear Information System (INIS)

    1999-01-01

    Mould room techniques are necessary to get the best from teletherapy treatment. They are directed at: Ensuring that the part of the patient being treated remains in the same position from start to end of a fraction of radiotherapy; Ensuring that the fields, as originally imaged and planned, can be accurately reproduced for each fraction; Ensuring that, if more than one planned volume is treated, these volumes maintain a constant, reproducible relationship to each other; Deriving contours for planning teletherapy; Facilitating accuracy of setting up individual fields with respect to position on the patient and treatment unit; Fabricating and mounting blocks or shields within any field that will adequately and reproducibly shield healthy tissue or sensitive organs; Fabricating and mounting compensators and bolus material within any field that will adequately and reproducibly modify the beam as required. Immobilisation is approached initially by assessing an anatomical region, the disease and the favoured treatment machine. The versatility of each technique to accomplish immobilisation for various purposes is addressed. Immobilisation is most commonly used in the head and neck region for the treatment of cancers of the oral and nasal passages and the treatment of brain tumours. As this part of the anatomy is very flexible, the immobilisation device must not only ensure that the head is kept in a symmetrical position, but also that the degree of flexion or extension of the neck (needed for treating a pituitary as opposed to a larynx) is maintained. Sensitive structures in that region are predominantly the eyes and spinal cord but on occasions a parotid salivary gland or part of the brain may require limitation of the dose. This may be achieved by planning the teletherapy beams with shielding blocks within selected fields

  18. Geological data integration techniques

    International Nuclear Information System (INIS)

    1988-09-01

    The objectives of this Technical Committee are to bring together current knowledge on geological data handling and analysis technologies as developed in the mineral and petroleum industries for geological, geophysical, geochemical and remote sensing data that can be applied to uranium exploration and resource appraisal. The recommendation for work on this topic was first made at the meeting of the NEA-IAEA Joint Group of Experts on R and D in Uranium Exploration Techniques (Paris, May 1984). In their report, processing of integrated data sets was considered to be extremely important in view of the very extensive data sets built up over the recent years by large uranium reconnaissance programmes. With the development of large, multidisciplinary data sets which includes geochemical, geophysical, geological and remote sensing data, the ability of the geologist to easily interpret large volumes of information has been largely the result of developments in the field of computer science in the past decade. Advances in data management systems, image processing software, the size and speed of computer systems and significantly reduced processing costs have made large data set integration and analysis practical and affordable. The combined signatures which can be obtained from the different types of data significantly enhance the geologists ability to interpret fundamental geological properties thereby improving the chances of finding a significant ore body. This volume is the product of one of a number of activities related to uranium geology and exploration during the past few years with the intent of bringing new technologies and exploration techniques to the IAEA Member States

  19. Changes in urological surgical techniques

    Directory of Open Access Journals (Sweden)

    Oktay Üçer

    2010-06-01

    Full Text Available Recently, laparoscopic and afterwards robotic techniques have constituted most of urologic surgery procedures. Open surgery may give place to robotic surgery due to possible widespread use of robots in the future. Studies, that compare these two techniques are usually designed about radical prostatectomy, since it is the most common operation performed by using these techniques. In literature,robotic surgery seems more advantageous than other techniques but the most important disadvantage of this technique is cost-effective problems. In present review,history of open, laparoscopic and robotic surgery, and comparison of advantages, disadvantages and cost of these techniques have been discussed with literature.

  20. INTERNAL ENVIRONMENT ANALYSIS TECHNIQUES

    Directory of Open Access Journals (Sweden)

    Caescu Stefan Claudiu

    2011-12-01

    Full Text Available Theme The situation analysis, as a separate component of the strategic planning, involves collecting and analysing relevant types of information on the components of the marketing environment and their evolution on the one hand and also on the organization’s resources and capabilities on the other. Objectives of the Research The main purpose of the study of the analysis techniques of the internal environment is to provide insight on those aspects that are of strategic importance to the organization. Literature Review The marketing environment consists of two distinct components, the internal environment that is made from specific variables within the organization and the external environment that is made from variables external to the organization. Although analysing the external environment is essential for corporate success, it is not enough unless it is backed by a detailed analysis of the internal environment of the organization. The internal environment includes all elements that are endogenous to the organization, which are influenced to a great extent and totally controlled by it. The study of the internal environment must answer all resource related questions, solve all resource management issues and represents the first step in drawing up the marketing strategy. Research Methodology The present paper accomplished a documentary study of the main techniques used for the analysis of the internal environment. Results The special literature emphasizes that the differences in performance from one organization to another is primarily dependant not on the differences between the fields of activity, but especially on the differences between the resources and capabilities and the ways these are capitalized on. The main methods of analysing the internal environment addressed in this paper are: the analysis of the organizational resources, the performance analysis, the value chain analysis and the functional analysis. Implications Basically such

  1. Specialized financing techniques

    International Nuclear Information System (INIS)

    Shepherd, J.

    1992-01-01

    Specific financing techniques applicable to wind energy projects in Canada are discussed. A limited partnership is the classic Canadian approach to tax-advantaged financing. For a typical wind project, the limited partners would get an internal rate of return of around 8% over 20 years as well as income tax deductions on Class 34 investments. This rate can be improved if the investors borrow some of the money; they get tax-free cash flow while having deductible loan interest, raising their rate of return after taxes to ca 9-10%. Special situation investors can get to take all of the Class 34 deduction right away, raising their return up to the 12% range. These investors include principal business corporations (such as utilities or oil companies), or companies who have sold their business. A second type of financing structure is related to inflation-indexed debt. The loan is structured like a mortgage, with the annual payments indexed to inflation but nevertheless low enough to provide an early positive cash flow from the project. Other possible financing structures are the immigrant investor fund and the provincial incentive corporations

  2. Dose Reduction Techniques

    CERN Document Server

    Waggoner, L O

    2000-01-01

    As radiation safety specialists, one of the things we are required to do is evaluate tools, equipment, materials and work practices and decide whether the use of these products or work practices will reduce radiation dose or risk to the environment. There is a tendency for many workers that work with radioactive material to accomplish radiological work the same way they have always done it rather than look for new technology or change their work practices. New technology is being developed all the time that can make radiological work easier and result in less radiation dose to the worker or reduce the possibility that contamination will be spread to the environment. As we discuss the various tools and techniques that reduce radiation dose, keep in mind that the radiological controls should be reasonable. We can not always get the dose to zero, so we must try to accomplish the work efficiently and cost-effectively. There are times we may have to accept there is only so much you can do. The goal is to do the sm...

  3. A hybrid straightwire technique.

    Science.gov (United States)

    Celli, Daniel; Catalfamo, Lorenza; Gasperoni, Enrico; Deli, Roberto

    2017-09-01

    An original straightwire appliance was developed in order to easily adapt force and friction to the different stages and needs of treatment. The appliance features: (1) conventional brackets with a 0.020×0.030″ slot in the anterior area, passive self-ligating brackets with a 0.022×0.030″ slot in the lateral area, and tubes with a 0.022×0.030″ slot in the molar area; (2) archwires which adapt to the different stages of treatment and increase their section and stiffness progressively, starting with 0.014″ superelastic NiTi, passing through 0.016×0.025″ and 0.019×0.025″ heat-activated NiTi and reaching 0.019×0.025″ stainless steel working archwires; (3) use of several ligation systems which progressively increase their binding (low-friction ligatures, "O"- or "8"-shape elastomeric ligatures). Clinical cases are shown to illustrate the technique. Copyright © 2017 CEO. Published by Elsevier Masson SAS. All rights reserved.

  4. Uncertainty analysis techniques

    International Nuclear Information System (INIS)

    Marivoet, J.; Saltelli, A.; Cadelli, N.

    1987-01-01

    The origin of the uncertainty affecting Performance Assessments, as well as their propagation to dose and risk results is discussed. The analysis is focused essentially on the uncertainties introduced by the input parameters, the values of which may range over some orders of magnitude and may be given as probability distribution function. The paper briefly reviews the existing sampling techniques used for Monte Carlo simulations and the methods for characterizing the output curves, determining their convergence and confidence limits. Annual doses, expectation values of the doses and risks are computed for a particular case of a possible repository in clay, in order to illustrate the significance of such output characteristics as the mean, the logarithmic mean and the median as well as their ratios. The report concludes that provisionally, due to its better robustness, such estimation as the 90th percentile may be substituted to the arithmetic mean for comparison of the estimated doses with acceptance criteria. In any case, the results obtained through Uncertainty Analyses must be interpreted with caution as long as input data distribution functions are not derived from experiments reasonably reproducing the situation in a well characterized repository and site

  5. Dating technique tested

    International Nuclear Information System (INIS)

    Anon.

    1985-01-01

    An analytical technique for dating ground water and polar ice up to a million years old has been successfully tested by scientists at Oak Ridge National Laboratory (ORNL). The system, known as a rare gas atom counter, extends the capabilities of resonance ionization mass spectrometry to include counting single atoms of krypton-81. The counter is composed of a pulsed dye laser operated in tandem with a mass spectrometer to separate the various isotopes of krypton. In a collaborative study, ORNL scientists recently used the method for the first time to count krypton-81 in a liter of ground water removed from a sandstone aquifer near Zurich. Fewer than 1000 krypton-81 atoms were isolated from the ground water samples. According to Bernard Lehman, a collaborating geochemist at the University of Bern, this first test proved that counting the small numbers of krypton-81 atoms necessary to make an estimate of the age of water could actually be done. Among the applications of this method, Lehman says, could be improved siting of locations for the disposal of radioactive wastes

  6. Motion Transplantation Techniques: A Survey

    NARCIS (Netherlands)

    van Basten, Ben; Egges, Arjan

    2012-01-01

    During the past decade, researchers have developed several techniques for transplanting motions. These techniques transplant a partial auxiliary motion, possibly defined for a small set of degrees of freedom, on a base motion. Motion transplantation improves motion databases' expressiveness and

  7. Technique Selectively Represses Immune System

    Science.gov (United States)

    ... Research Matters December 3, 2012 Technique Selectively Represses Immune System Myelin (green) encases and protects nerve fibers (brown). A new technique prevents the immune system from attacking myelin in a mouse model of ...

  8. Ethical Use of Gestalt Techniques.

    Science.gov (United States)

    Given, Jane A.

    The purpose of this paper is to engender a healthy respect for Gestalt theory and techniques and the use of the techniques in the client's best interest and in the interest of positive professional and self-development in the practitioner. An overview of Gestalt techniques is provided, concentrating on the two category divisions of experiments and…

  9. Sterility test by radiometric technique

    International Nuclear Information System (INIS)

    Faruq, Muhammad

    1980-01-01

    Sterility test of pharmaceuticals can be carried out by the application of pharmacopoeia and radiometric technique. In Indonesia the application of pharmacopoeia technique is carried out through liquid germination for aerobacteria and for fungus and yeast. Radiometric technique is applied to autotrop and heterotrop bacteria. (SMN)

  10. Advanced qualification techniques

    International Nuclear Information System (INIS)

    Winokur, P.S.; Shaneyfelt, M.R.; Meisenheimer, T.L.; Fleetwood, D.M.

    1993-01-01

    This paper demonstrates use of the Qualified Manufacturers List (QML) methodology to qualify commercial and military microelectronics for use in space applications. QML ''builds in'' the hardness of product through statistical process control (SPC) of technology parameters relevant to the radiation response, test structure to integrated circuit (IC) correlations, and techniques for extrapolating laboratory test results to low-dose-rate space scenarios. Each of these elements is demonstrated and shown to be a cost-effective alternative to expensive end-of-line IC testing. Several examples of test structured-IC correlations are provided and recent work on complications arising from transistor scaling and geometry is discussed. The use of a 10-keV x-ray wafer-level test system to support SPC and establish ''process capability'' is illustrated and a comparison of 10-keV x-ray and Co 60 gamma irradiations is provided for a wide range of CMOS technologies. The x-ray tester is shown to be cost-effective and its use in lot acceptance/qualification is recommended. Finally, a comparison is provided between MIL-STD-883D, Test Method 1019.4, which governs the testing of packaged semiconductor microcircuits in the DoD, and ESA/SSC Basic Specification No. 22900, Europe's Total Dose Steady-State Irradiation Test Method. Test Method 1019.4 focuses on conservative estimates of MOS hardness for space and tactical applications, while Basic Specification 22900 focuses on improved simulation of low-dose-rate space environments

  11. Dose Reduction Techniques

    International Nuclear Information System (INIS)

    WAGGONER, L.O.

    2000-01-01

    As radiation safety specialists, one of the things we are required to do is evaluate tools, equipment, materials and work practices and decide whether the use of these products or work practices will reduce radiation dose or risk to the environment. There is a tendency for many workers that work with radioactive material to accomplish radiological work the same way they have always done it rather than look for new technology or change their work practices. New technology is being developed all the time that can make radiological work easier and result in less radiation dose to the worker or reduce the possibility that contamination will be spread to the environment. As we discuss the various tools and techniques that reduce radiation dose, keep in mind that the radiological controls should be reasonable. We can not always get the dose to zero, so we must try to accomplish the work efficiently and cost-effectively. There are times we may have to accept there is only so much you can do. The goal is to do the smart things that protect the worker but do not hinder him while the task is being accomplished. In addition, we should not demand that large amounts of money be spent for equipment that has marginal value in order to save a few millirem. We have broken the handout into sections that should simplify the presentation. Time, distance, shielding, and source reduction are methods used to reduce dose and are covered in Part I on work execution. We then look at operational considerations, radiological design parameters, and discuss the characteristics of personnel who deal with ALARA. This handout should give you an overview of what it takes to have an effective dose reduction program

  12. Dose Reduction Techniques

    Energy Technology Data Exchange (ETDEWEB)

    WAGGONER, L.O.

    2000-05-16

    As radiation safety specialists, one of the things we are required to do is evaluate tools, equipment, materials and work practices and decide whether the use of these products or work practices will reduce radiation dose or risk to the environment. There is a tendency for many workers that work with radioactive material to accomplish radiological work the same way they have always done it rather than look for new technology or change their work practices. New technology is being developed all the time that can make radiological work easier and result in less radiation dose to the worker or reduce the possibility that contamination will be spread to the environment. As we discuss the various tools and techniques that reduce radiation dose, keep in mind that the radiological controls should be reasonable. We can not always get the dose to zero, so we must try to accomplish the work efficiently and cost-effectively. There are times we may have to accept there is only so much you can do. The goal is to do the smart things that protect the worker but do not hinder him while the task is being accomplished. In addition, we should not demand that large amounts of money be spent for equipment that has marginal value in order to save a few millirem. We have broken the handout into sections that should simplify the presentation. Time, distance, shielding, and source reduction are methods used to reduce dose and are covered in Part I on work execution. We then look at operational considerations, radiological design parameters, and discuss the characteristics of personnel who deal with ALARA. This handout should give you an overview of what it takes to have an effective dose reduction program.

  13. New techniques in quality assurance

    International Nuclear Information System (INIS)

    Fornicola, J.C.

    1987-01-01

    GPU Nuclear Corp. has a multifaceted quality assurance (QA) program. This program includes a comprehensive QA organization to help ensure its implementation. The QA organization employs various techniques in assuring quality at GPU Nuclear. These techniques not only include the typical QA/quality-control verification activities, i.e., QA engineering, quality control, and audits, but also include some new innovative techniques. Several new techniques have been developed for verifying activities. These techniques include monitoring and functional audits of safety systems. Several new techniques for assessing performance and adequacy and effectiveness of plant and QA programs, such as plant assessments and QA systems engineering evaluations, have also been developed. This paper provides an overview of these and other new techniques being employed by GPU Nuclear's QA organization

  14. Classroom Assessment Techniques

    Science.gov (United States)

    Narayanan, M.

    2003-12-01

    and the learner should be carefully observed and monitored. Forrest says that Student Portfolios, which document learning in more detail, seldom reveal how teaching contributes to students' progress. Cerbin further indicates that a course portfolio is essentially, a like a manuscript of scholarly work in progress. In this example, it is a work that explains what, how, and why students learn or do not learn in a course. In this paper, the author reports on a dozen techniques that could perhaps be used to document assessment of student learning. References : Cerbin, W. (1993). Fostering a culture of teaching as scholarship. The Teaching Professor, 7(3), 1-2. Edgerton, R., Hutchings, P., & Quinlan, P. (1991). The teaching portfolio: Capturing the scholarship in teaching. Washington, DC: American Association for Higher Education. Forrest, A. (1990). Time will tell: Portfolio-assisted assessment of general education. Washington, DC: American Association for Higher Education. Linn, R., Baker, E., & Dunbar, S. (1991). Complex, Performance-based Assessment: Expectations and Validation Criteria. Educational Researcher, 20 (8), 15-21. Narayanan, M. (2003). Assessment in Higher Education: Partnerships in Learning. Paper presented at the 23rd Annual Lilly Conference on College Teaching, Miami University, Oxford, OH. Seldin, P. (1991). The teaching portfolio. Bolton, MA: Anker. Young, C. O., Sr., & Young, L. H. (1999). Assessing Learning in Interactive Courses. Journal on Excellence in College Teaching, 10 (1), 63-76.

  15. Ultrasonic techniques for fluids characterization

    CERN Document Server

    Povey, Malcolm J W

    1997-01-01

    This book is a comprehensive and practical guide to the use of ultrasonic techniques for the characterization of fluids. Focusing on ultrasonic velocimetry, the author covers the basic topics and techniques necessaryfor successful ultrasound measurements on emulsions, dispersions, multiphase media, and viscoelastic/viscoplastic materials. Advanced techniques such as scattering, particle sizing, and automation are also presented. As a handbook for industrial and scientific use, Ultrasonic Techniques for Fluids Characterization is an indispensable guide to chemists and chemical engineers using ultrasound for research or process monitoring in the chemical, food processing, pharmaceutical, cosmetic, biotechnology,and fuels industries. Key Features * Appeals to anyone using ultrasound to study fluids * Provides the first detailed description of the ultrasound profiling technique for dispersions * Describes new techniques for measuring phase transitions and nucleation, such as water/ice and oil/fat * Presents the l...

  16. Microalgae harvesting techniques: A review.

    Science.gov (United States)

    Singh, Gulab; Patidar, S K

    2018-07-01

    Microalgae with wide range of commercial applications have attracted a lot of attention of the researchers in the last few decades. However, microalgae utilization is not economically sustainable due to high cost of harvesting. A wide range of solid - liquid separation techniques are available for microalgae harvesting. The techniques include coagulation and flocculation, flotation, centrifugation and filtration or a combination of various techniques. Despite the importance of harvesting to the economics and energy balance, there is no universal harvesting technique for microalgae. Therefore, this review focuses on assessing technical, economical and application potential of various harvesting techniques so as to allow selection of an appropriate technology for cost effectively harvesting of microalgae from their culture medium. Various harvesting and concentrating techniques of microalgae were reviewed to suggest order of suitability of the techniques for four main microalgae applications i.e biofuel, human and animal food, high valued products, and water quality restoration. For deciding the order of suitability, a comparative analysis of various harvesting techniques based on the six common criterions (i.e biomass quality, cost, biomass quantity, processing time, species specific and toxicity) has been done. Based on the order of various techniques vis-a-vis various criteria and preferred order of criteria for various applications, order of suitability of harvesting techniques for various applications has been decided. Among various harvesting techniques, coagulation and flocculation, centrifugation and filtration were found to be most suitable for considered applications. These techniques may be used alone or in combination for increasing the harvesting efficiency. Copyright © 2018 Elsevier Ltd. All rights reserved.

  17. Informationization nuclear apparatus communication technique

    International Nuclear Information System (INIS)

    Yu Tiqi; Fang Zongliang; Wen Qilin

    2006-01-01

    The paper explains the request of communication ability in nuclear technique application area. Based on the actuality of nuclear apparatus communication ability, and mainly combining with the development of communication technique, the authors analyzes the application trend of communication technique applying in nuclear apparatus, for the apparatus and system needing communication ability, they need selecting suitable communication means to make them accomplish the task immediately and effectively. (authors)

  18. Parachute technique for partial penectomy

    Directory of Open Access Journals (Sweden)

    Fernando Korkes

    2010-04-01

    Full Text Available PURPOSE: Penile carcinoma is a rare but mutilating malignancy. In this context, partial penectomy is the most commonly applied approach for best oncological results. We herein propose a simple modification of the classic technique of partial penectomy, for better cosmetic and functional results. TECHNIQUE: If partial penectomy is indicated, the present technique can bring additional benefits. Different from classical technique, the urethra is spatulated only ventrally. An inverted "V" skin flap with 0.5 cm of extension is sectioned ventrally. The suture is performed with vicryl 4-0 in a "parachute" fashion, beginning from the ventral portion of the urethra and the "V" flap, followed by the "V" flap angles and than by the dorsal portion of the penis. After completion of the suture, a Foley catheter and light dressing are placed for 24 hours. CONCLUSIONS: Several complex reconstructive techniques have been previously proposed, but normally require specific surgical abilities, adequate patient selection and staged procedures. We believe that these reconstructive techniques are very useful in some specific subsets of patients. However, the technique herein proposed is a simple alternative that can be applied to all men after a partial penectomy, and takes the same amount of time as that in the classic technique. In conclusion, the "parachute" technique for penile reconstruction after partial amputation not only improves the appearance of the penis, but also maintains an adequate function.

  19. GPU Pro advanced rendering techniques

    CERN Document Server

    Engel, Wolfgang

    2010-01-01

    This book covers essential tools and techniques for programming the graphics processing unit. Brought to you by Wolfgang Engel and the same team of editors who made the ShaderX series a success, this volume covers advanced rendering techniques, engine design, GPGPU techniques, related mathematical techniques, and game postmortems. A special emphasis is placed on handheld programming to account for the increased importance of graphics on mobile devices, especially the iPhone and iPod touch.Example programs and source code can be downloaded from the book's CRC Press web page. 

  20. Non-contact ultrasound techniques

    International Nuclear Information System (INIS)

    Khazali Mohd Zin

    2001-01-01

    Non-contact ultrasound plays significant role in material characterisation and inspection. Unlike conventional ultrasonic techniques, non-contact ultrasonic is mostly applicable to areas where the former has its weaknesses and limitations. It is interesting to note that the non-contact ultrasonic technique has an important significant application in industry. The technique is signified by the fact that the object to be inspected is further away from the ultrasonic source, no couplant is needed and inconsistent pressure between the transducer and the specimen can be eliminated. The paper discusses some of the non-contact ultrasound technique and its applications. (Author)

  1. A disposition of interpolation techniques

    NARCIS (Netherlands)

    Knotters, M.; Heuvelink, G.B.M.

    2010-01-01

    A large collection of interpolation techniques is available for application in environmental research. To help environmental scientists in choosing an appropriate technique a disposition is made, based on 1) applicability in space, time and space-time, 2) quantification of accuracy of interpolated

  2. Magnetic characterization techniques for nanomaterials

    CERN Document Server

    2017-01-01

    Sixth volume of a 40 volume series on nanoscience and nanotechnology, edited by the renowned scientist Challa S.S.R. Kumar. This handbook gives a comprehensive overview about Magnetic Characterization Techniques for Nanomaterials. Modern applications and state-of-the-art techniques are covered and make this volume an essential reading for research scientists in academia and industry.

  3. Diagram Techniques in Group Theory

    Science.gov (United States)

    Stedman, Geoffrey E.

    2009-09-01

    Preface; 1. Elementary examples; 2. Angular momentum coupling diagram techniques; 3. Extension to compact simple phase groups; 4. Symmetric and unitary groups; 5. Lie groups and Lie algebras; 6. Polarisation dependence of multiphoton processes; 7. Quantum field theoretic diagram techniques for atomic systems; 8. Applications; Appendix; References; Indexes.

  4. SEM-based characterization techniques

    International Nuclear Information System (INIS)

    Russell, P.E.

    1986-01-01

    The scanning electron microscope is now a common instrument in materials characterization laboratories. The basic role of the SEM as a topographic imaging system has steadily been expanding to include a variety of SEM-based analytical techniques. These techniques cover the range of basic semiconductor materials characterization to live-time device characterization of operating LSI or VLSI devices. This paper introduces many of the more commonly used techniques, describes the modifications or additions to a conventional SEM required to utilize the techniques, and gives examples of the use of such techniques. First, the types of signals available from a sample being irradiated by an electron beam are reviewed. Then, where applicable, the type of spectroscopy or microscopy which has evolved to utilize the various signal types are described. This is followed by specific examples of the use of such techniques to solve problems related to semiconductor technology. Techniques emphasized include: x-ray fluorescence spectroscopy, electron beam induced current (EBIC), stroboscopic voltage analysis, cathodoluminescnece and electron beam IC metrology. Current and future trends of some of the these techniques, as related to the semiconductor industry are discussed

  5. Techniques for Improving Cash Management.

    Science.gov (United States)

    Lykins, Ronald G.

    1973-01-01

    This article deals with several techniques for regulating cash inflow and outflow and investing surplus cash for short periods of time. The techniques are: (1) consolidating checking accounts, (2) determining surplus cash by examining bank balances in conjunction with the cash book, (3) selecting a minimum bank balance, (4) investing a greater…

  6. Strongly correlated systems experimental techniques

    CERN Document Server

    Mancini, Ferdinando

    2015-01-01

    The continuous evolution and development of experimental techniques is at the basis of any fundamental achievement in modern physics. Strongly correlated systems (SCS), more than any other, need to be investigated through the greatest variety of experimental techniques in order to unveil and crosscheck the numerous and puzzling anomalous behaviors characterizing them. The study of SCS fostered the improvement of many old experimental techniques, but also the advent of many new ones just invented in order to analyze the complex behaviors of these systems. Many novel materials, with functional properties emerging from macroscopic quantum behaviors at the frontier of modern research in physics, chemistry and materials science, belong to this class of systems. The volume presents a representative collection of the modern experimental techniques specifically tailored for the analysis of strongly correlated systems. Any technique is presented in great detail by its own inventor or by one of the world-wide recognize...

  7. Standardization of androstenedione and estrone radioimmunoassay and profile of sex steroids, gonadotropins and prolactin - in patients with chronic anovulation due to inappropriate feedback (polycystic ovarian syndrome); Padronizacao do radioimunoensaio da androstenediona e da estrona e o perfil dos esteroides sexuais, gonadotrofinas e prolactina em pacientes com anovulacao cronica por retrocontrole improprio (sindrome dos ovarios policisticos)

    Energy Technology Data Exchange (ETDEWEB)

    Vilanova, Maria do Socorro Veras

    1992-12-01

    Full text. In order to evaluate the profile of the sex steroids gonadotropin and prolactin in polycystic ovarian syndrome (POS), 24 patients with POS were studied and compared with 20 normal women during the early follicular phase of the menstrual cycle. Radioimmunoassay techniques for androstenedione (A) and estrone (E{sub 1}) were standardized for the purpose of the study. Androstenedione and estrone were extracted from plasma with ethyl ether. The assays were maintained in equilibrium and the labelled hormone-antibody complex was then separated from the free hormone using dextran charcoal. The sensitivity of the method was 6.8 pg/tube for A and 3.7 pg/tube for E{sub 1}. Nonspecific binding ws 3.4 for A and 3.3 for E{sub 1}. The interessay error at the D50 level was 15.6 for A and 8.6 for E{sub 1}. Patients with POS had significantly higher basal levels of LH, A, T E{sub 1} and PRL and similar FSH and DHEA-S levels when compared with normal women. The LH/FSH ratio was significantly elevated and the A/T ratio was significantly decreased. The A/E{sub 1} and T/E{sub 2} ratios were elevated and the E{sub 1}/E{sub 2} was decreased, although the differences were not statistically significant. A positive correlation between A and E{sub 1} was observed in patients with POS. In view of the above data, it was concluded that: the quality control parameters of the radioimmunoassay for A and E{sub 1} standardized in the present study are considered satisfactory, and the assay could be used for diagnosis and research; the patients with POS have a different sex steroid and gonadotropin profile when compared normal women during the early follicular phase of the menstrual cycle

  8. Anatomic partial nephrectomy: technique evolution.

    Science.gov (United States)

    Azhar, Raed A; Metcalfe, Charles; Gill, Inderbir S

    2015-03-01

    Partial nephrectomy provides equivalent long-term oncologic and superior functional outcomes as radical nephrectomy for T1a renal masses. Herein, we review the various vascular clamping techniques employed during minimally invasive partial nephrectomy, describe the evolution of our partial nephrectomy technique and provide an update on contemporary thinking about the impact of ischemia on renal function. Recently, partial nephrectomy surgical technique has shifted away from main artery clamping and towards minimizing/eliminating global renal ischemia during partial nephrectomy. Supported by high-fidelity three-dimensional imaging, novel anatomic-based partial nephrectomy techniques have recently been developed, wherein partial nephrectomy can now be performed with segmental, minimal or zero global ischemia to the renal remnant. Sequential innovations have included early unclamping, segmental clamping, super-selective clamping and now culminating in anatomic zero-ischemia surgery. By eliminating 'under-the-gun' time pressure of ischemia for the surgeon, these techniques allow an unhurried, tightly contoured tumour excision with point-specific sutured haemostasis. Recent data indicate that zero-ischemia partial nephrectomy may provide better functional outcomes by minimizing/eliminating global ischemia and preserving greater vascularized kidney volume. Contemporary partial nephrectomy includes a spectrum of surgical techniques ranging from conventional-clamped to novel zero-ischemia approaches. Technique selection should be tailored to each individual case on the basis of tumour characteristics, surgical feasibility, surgeon experience, patient demographics and baseline renal function.

  9. Physical simulations using centrifuge techniques

    International Nuclear Information System (INIS)

    Sutherland, H.J.

    1981-01-01

    Centrifuge techniques offer a technique for doing physical simulations of the long-term mechanical response of deep ocean sediment to the emplacement of waste canisters and to the temperature gradients generated by them. Preliminary investigations of the scaling laws for pertinent phenomena indicate that the time scaling will be consistent among them and equal to the scaling factor squared. This result implies that this technique will permit accelerated-life-testing of proposed configurations; i.e, long-term studies may be done in relatively short times. Presently, existing centrifuges are being modified to permit scale model testing. This testing will start next year

  10. Scalable Techniques for Formal Verification

    CERN Document Server

    Ray, Sandip

    2010-01-01

    This book presents state-of-the-art approaches to formal verification techniques to seamlessly integrate different formal verification methods within a single logical foundation. It should benefit researchers and practitioners looking to get a broad overview of the spectrum of formal verification techniques, as well as approaches to combining such techniques within a single framework. Coverage includes a range of case studies showing how such combination is fruitful in developing a scalable verification methodology for industrial designs. This book outlines both theoretical and practical issue

  11. Statistical Techniques for Project Control

    CERN Document Server

    Badiru, Adedeji B

    2012-01-01

    A project can be simple or complex. In each case, proven project management processes must be followed. In all cases of project management implementation, control must be exercised in order to assure that project objectives are achieved. Statistical Techniques for Project Control seamlessly integrates qualitative and quantitative tools and techniques for project control. It fills the void that exists in the application of statistical techniques to project control. The book begins by defining the fundamentals of project management then explores how to temper quantitative analysis with qualitati

  12. Food physics and radiation techniques

    International Nuclear Information System (INIS)

    Szabo, A. S.

    1999-01-01

    In the lecture information is given about food physics, which is a rather new, interdisciplinary field of science, connecting food science and applied physics. The topics of radioactivity of foodstuffs and radiation techniques in the food industry are important parts of food physics detailed information will be given about the main fields (e.g. radio stimulation, food preservation) of radiation techniques in the agro-food sector. Finally some special questions of radioactive contamination of foodstuffs in hungary and applicability of radioanalytical techniques (e.g. Inaa) for food investigation will be analyzed and discussed

  13. Nuclear techniques in analytical chemistry

    CERN Document Server

    Moses, Alfred J; Gordon, L

    1964-01-01

    Nuclear Techniques in Analytical Chemistry discusses highly sensitive nuclear techniques that determine the micro- and macro-amounts or trace elements of materials. With the increasingly frequent demand for the chemical determination of trace amounts of elements in materials, the analytical chemist had to search for more sensitive methods of analysis. This book accustoms analytical chemists with nuclear techniques that possess the desired sensitivity and applicability at trace levels. The topics covered include safe handling of radioactivity; measurement of natural radioactivity; and neutron a

  14. A simplified indirect bonding technique

    Directory of Open Access Journals (Sweden)

    Radha Katiyar

    2014-01-01

    Full Text Available With the advent of lingual orthodontics, indirect bonding technique has become an integral part of practice. It involves placement of brackets initially on the models and then their transfer to teeth with the help of transfer trays. Problems encountered with current indirect bonding techniques used are (1 the possibility of adhesive flash remaining around the base of the brackets which requires removal (2 longer time required for the adhesive to gain enough bond strength for secure tray removal. The new simplified indirect bonding technique presented here overcomes both these problems.

  15. Artificial intelligence techniques in Prolog

    CERN Document Server

    Shoham, Yoav

    1993-01-01

    Artificial Intelligence Techniques in Prolog introduces the reader to the use of well-established algorithmic techniques in the field of artificial intelligence (AI), with Prolog as the implementation language. The techniques considered cover general areas such as search, rule-based systems, and truth maintenance, as well as constraint satisfaction and uncertainty management. Specific application domains such as temporal reasoning, machine learning, and natural language are also discussed.Comprised of 10 chapters, this book begins with an overview of Prolog, paying particular attention to Prol

  16. Lichen techniques of pollution assessment

    Energy Technology Data Exchange (ETDEWEB)

    O' Hare, G

    1973-01-01

    Available techniques for determining air pollution by sulfur dioxide using lichens are described. An application of these methods - species distributions, zone mapping and analyses of total sulfur content - in the west central Scotland area, is briefly reported.

  17. [Impressions techniques--Part 2].

    Science.gov (United States)

    Levartovsky, S; Masri, M; Alter, E; Pilo, R

    2012-10-01

    A dental impression is a positive replica of the teeth, the surrounding gingiva and the border between them; the purpose of which is to create an accurate master model. Two major techniques for impressions exist today: The conventional and the digital impressions. The current article describes both techniques. In the conventional impressions, it is important to choose a proper tray, stock or custom, and to mix the material properly. The commonly used impression techniques for making a conventional impression are described with a review on the effect of the technique on its accuracy. The effect of the wash bulk on the accuracy of the stone dies and/or the restoration is discussed, as well. The digital impressions with their advantages and disadvantages are described in comparison to the conventional impressions. Although, digital impressions eliminate some of the negative characteristics of conventional impressions, proper soft-tissue management and isolation of tooth preparation margins is still mandatory.

  18. Modern techniques of surface science

    CERN Document Server

    Woodruff, D Phil

    2016-01-01

    This fully revised, updated and reorganised third edition provides a thorough introduction to the characterisation techniques used in surface science and nanoscience today. Each chapter brings together and compares the different techniques used to address a particular research question, including how to determine the surface composition, surface structure, surface electronic structure, surface microstructure at different length scales (down to sub-molecular), and the molecular character of adsorbates and their adsorption or reaction properties. Readers will easily understand the relative strengths and limitations of the techniques available to them and, ultimately, will be able to select the most suitable techniques for their own particular research purposes. This is an essential resource for researchers and practitioners performing materials analysis, and for senior undergraduate students looking to gain a clear understanding of the underlying principles and applications of the different characterisation tec...

  19. Radioimmunoassay techniques in cancer medicine

    International Nuclear Information System (INIS)

    Laurence, D.J.R.

    1978-01-01

    The RIA principle is described, and the application of this technique in cancer treatment is discussed. In general, 125 I is used as tracer. The application of RIA in tumour diagnosis is illustrated by various examples. (VJ) [de

  20. Experimental techniques and measurement accuracies

    International Nuclear Information System (INIS)

    Bennett, E.F.; Yule, T.J.; DiIorio, G.; Nakamura, T.; Maekawa, H.

    1985-02-01

    A brief description of the experimental tools available for fusion neutronics experiments is given. Attention is paid to error estimates mainly for the measurement of tritium breeding ratio in simulated blankets using various techniques

  1. Submucosal tunneling techniques: current perspectives.

    Science.gov (United States)

    Kobara, Hideki; Mori, Hirohito; Rafiq, Kazi; Fujihara, Shintaro; Nishiyama, Noriko; Ayaki, Maki; Yachida, Tatsuo; Matsunaga, Tae; Tani, Johji; Miyoshi, Hisaaki; Yoneyama, Hirohito; Morishita, Asahiro; Oryu, Makoto; Iwama, Hisakazu; Masaki, Tsutomu

    2014-01-01

    Advances in endoscopic submucosal dissection include a submucosal tunneling technique, involving the introduction of tunnels into the submucosa. These tunnels permit safer offset entry into the peritoneal cavity for natural orifice transluminal endoscopic surgery. Technical advantages include the visual identification of the layers of the gut, blood vessels, and subepithelial tumors. The creation of a mucosal flap that minimizes air and fluid leakage into the extraluminal cavity can enhance the safety and efficacy of surgery. This submucosal tunneling technique was adapted for esophageal myotomy, culminating in its application to patients with achalasia. This method, known as per oral endoscopic myotomy, has opened up the new discipline of submucosal endoscopic surgery. Other clinical applications of the submucosal tunneling technique include its use in the removal of gastrointestinal subepithelial tumors and endomicroscopy for the diagnosis of functional and motility disorders. This review suggests that the submucosal tunneling technique, involving a mucosal safety flap, can have potential values for future endoscopic developments.

  2. Radiotracer techniques in hydrological studies

    International Nuclear Information System (INIS)

    Oladipo, M.O.A.; Funtua, I.I.

    2000-07-01

    The use of radioactive tracers particularly short-lived radioisotopes frequently offers advantages over conventional methods of analyses. Applications of nuclear techniques in the field of hydrology constitute important and sometimes unique tools for obtaining critical information needed for water resources management. Essentially, radiotracer techniques offer a safe, cost effective and powerful tool in the assessment, management and protection of water resources. The Centre for Energy Research and Training, Ahmadu Bello University, Zaria of late has been offering consultancy services to some industries in the area of radiotracer technique. The first nuclear reactor in Nigeria, the MNSR, is expected to be commissioned in the Centre very soon. Many short-lived radioisotopes such as Cu-64, Ga-72, Br-82, Hg-197 etc which are very important in hydrological studies can be produced by the MNSR facility. This article reports on the basic principles of the technique and its roles in hydrology

  3. Schlenk Techniques for Anionic Polymerization

    KAUST Repository

    Ratkanthwar, Kedar; Zhao, Junpeng; Zhang, Hefeng; Hadjichristidis, Nikolaos; Mays, Jimmy

    2015-01-01

    Anionic polymerization-high vacuum techniques (HVTs) are doubtlessly the most prominent and reliable experimental tools to prepare polymer samples with well-defined and, in many cases, complex macromolecular architectures. Due to the high demands

  4. Microdialysis technique and interventional radiology

    International Nuclear Information System (INIS)

    An Xiao; Xiao Xiangsheng

    2007-01-01

    Basic research in interventional radiology, including transcatheter artery perfusion especially, is progressing slowly due to lack of proper method. Microdialysis technique, a kind of accurate sampling technique in vivo, may help to solve the problem. Just as its name implies, microdialysis means tiny dialysis with advantages of authenticity, exactness and less error. Furthermore it has been applied widely and should be received with great attention and popularity. (authors)

  5. Experimental technique of neutron reflection

    International Nuclear Information System (INIS)

    Chen Bo; Huang Chaoqiang; Li Xinxi

    2006-12-01

    It is presented that the classifications, structures and components of neutron reflectometer (NR), as well s functions and parameters of each components, detailed characters of NR facility 'PRN-2M'. Based on the practical experiments, the basic experimental techniques, the measurement and the related experimental settings are described, including the choice of experimental conditions, adjustments of polarized neutron beam line, basic experimental technique and approach of measurement. The above can be an instruction for NR experiments and a reference for NR construction. (authors)

  6. Uranium exploration techniques in Bolivia

    International Nuclear Information System (INIS)

    Virreira, V.

    1981-01-01

    The exploration techniques used by the Bolivian Nuclear Energy Commission/Comision Boliviana de Energia Nuclear (COBOEN) in certain areas of Bolivia that are considered promising from the standpoint of uranium deposits are presented in summary form. The methods and results obtained are described, including the techniques used by the Italian company AGIP-URANIUM during four years of exploration under contract with COBOEN. Statistical data are also given explaining the present level of uranium exploration in Bolivia. (author)

  7. New techniques for subdivision modelling

    OpenAIRE

    BEETS, Koen

    2006-01-01

    In this dissertation, several tools and techniques for modelling with subdivision surfaces are presented. Based on the huge amount of theoretical knowledge about subdivision surfaces, we present techniques to facilitate practical 3D modelling which make subdivision surfaces even more useful. Subdivision surfaces have reclaimed attention several years ago after their application in full-featured 3D animation movies, such as Toy Story. Since then and due to their attractive properties an ever i...

  8. Soil analysis. Modern instrumental technique

    International Nuclear Information System (INIS)

    Smith, K.A.

    1993-01-01

    This book covers traditional methods of analysis and specialist monographs on individual instrumental techniques, which are usually not written with soil or plant analysis specifically in mind. The principles of the techniques are combined with discussions of sample preparation and matrix problems, and critical reviews of applications in soil science and related disciplines. Individual chapters are processed separately for inclusion in the appropriate data bases

  9. Survey of semantic modeling techniques

    Energy Technology Data Exchange (ETDEWEB)

    Smith, C.L.

    1975-07-01

    The analysis of the semantics of programing languages was attempted with numerous modeling techniques. By providing a brief survey of these techniques together with an analysis of their applicability for answering semantic issues, this report attempts to illuminate the state-of-the-art in this area. The intent is to be illustrative rather than thorough in the coverage of semantic models. A bibliography is included for the reader who is interested in pursuing this area of research in more detail.

  10. Text Generation: The State of the Art and the Literature.

    Science.gov (United States)

    1981-12-01

    Ablex, Norwood, N. J., 1980. [ de Joia 80] de Joia , A., and A. Stenton, Terms in Systemic Linguistics, Batsford Academic and Educational, Ltd...GENERATION TECHNOLOGY ....................................... 1 2. WHAT TECHNIQUES ARE NOW AVAILABLE FOR USE IN SYSTEM DESIGNS ?........... 3. BASIC...M odels of Discourse ............................................................ 6 * 9. DESIGNING IN 1986 FOR PRACTICAL TEXT GENERATION

  11. Teaching Speaking Through Debate Technique

    Directory of Open Access Journals (Sweden)

    . Suranto

    2016-07-01

    Full Text Available Abstract : Teaching Speaking Through Debate Technique. Speaking is one of the basic competence from the other fourth basic competence (listening, speaking, reading and writing. Speaking ability should be mastered by every students, in order to achieve that competence students should be given the right technique to study sepaking. The successfull of the students speaking can be seen from their ability to express idea, thought and feeling through speaking. The objective of this Action Research is to improve students’s oral communication skill through the debate technique. This study was conducted at MA Ma’arif Nu 5 Sekampung Lampung Timur from March to April 2014. The research data were taken from students in the eleventh class, with 28 students and analyzed qualitatively and quantitatively. The research findings indicate that there are improvements in students’ english speaking skill through the debate technique. By analyzing data qualitatively and quantitatively from the end of the first cycle to the second cycle and it was found that the students’ English speaking skill increased 20,9% over the standard that has been determined by the researcher that is 65%. The researcher concludes that the students’ english speaking skill can be improve through the debate technique in learning process.   Key words : action research, debate technique, english speaking skill

  12. Microscopy techniques in flavivirus research.

    Science.gov (United States)

    Chong, Mun Keat; Chua, Anthony Jin Shun; Tan, Terence Tze Tong; Tan, Suat Hoon; Ng, Mah Lee

    2014-04-01

    The Flavivirus genus is composed of many medically important viruses that cause high morbidity and mortality, which include Dengue and West Nile viruses. Various molecular and biochemical techniques have been developed in the endeavour to study flaviviruses. However, microscopy techniques still have irreplaceable roles in the identification of novel virus pathogens and characterization of morphological changes in virus-infected cells. Fluorescence microscopy contributes greatly in understanding the fundamental viral protein localizations and virus-host protein interactions during infection. Electron microscopy remains the gold standard for visualizing ultra-structural features of virus particles and infected cells. New imaging techniques and combinatory applications are continuously being developed to push the limit of resolution and extract more quantitative data. Currently, correlative live cell imaging and high resolution three-dimensional imaging have already been achieved through the tandem use of optical and electron microscopy in analyzing biological specimens. Microscopy techniques are also used to measure protein binding affinities and determine the mobility pattern of proteins in cells. This chapter will consolidate on the applications of various well-established microscopy techniques in flavivirus research, and discuss how recently developed microscopy techniques can potentially help advance our understanding in these membrane viruses. Copyright © 2013 Elsevier Ltd. All rights reserved.

  13. Highly reliable TOFD UT Technique

    International Nuclear Information System (INIS)

    Acharya, G.D.; Trivedi, S.A.R.; Pai, K.B.

    2003-01-01

    The high performance of the time of flight diffraction technique (TOFD) with regard to the detection capabilities of weld defects such as crack, slag, lack of fusion has led to a rapidly increasing acceptance of the technique as a pre?service inspection tool. Since the early 1990s TOFD has been applied to several projects, where it replaced the commonly used radiographic testing. The use of TOM lead to major time savings during new build and replacement projects. At the same time the TOFD technique was used as base line inspection, which enables monitoring in the future for critical welds, but also provides documented evidence for life?time. The TOFD technique as the ability to detect and simultaneously size flows of nearly any orientation within the weld and heat affected zone. TOM is recognized as a reliable, proven technique for detection and sizing of defects and proven to be a time saver, resulting in shorter shutdown periods and construction project times. Thus even in cases where inspection price of TOFD per welds is higher, in the end it will result in significantly lower overall costs and improve quality. This paper deals with reliability, economy, acceptance criteria and field experience. It also covers comparative study between radiography technique Vs. TOFD. (Author)

  14. Review of advanced imaging techniques

    Directory of Open Access Journals (Sweden)

    Yu Chen

    2012-01-01

    Full Text Available Pathology informatics encompasses digital imaging and related applications. Several specialized microscopy techniques have emerged which permit the acquisition of digital images ("optical biopsies" at high resolution. Coupled with fiber-optic and micro-optic components, some of these imaging techniques (e.g., optical coherence tomography are now integrated with a wide range of imaging devices such as endoscopes, laparoscopes, catheters, and needles that enable imaging inside the body. These advanced imaging modalities have exciting diagnostic potential and introduce new opportunities in pathology. Therefore, it is important that pathology informaticists understand these advanced imaging techniques and the impact they have on pathology. This paper reviews several recently developed microscopic techniques, including diffraction-limited methods (e.g., confocal microscopy, 2-photon microscopy, 4Pi microscopy, and spatially modulated illumination microscopy and subdiffraction techniques (e.g., photoactivated localization microscopy, stochastic optical reconstruction microscopy, and stimulated emission depletion microscopy. This article serves as a primer for pathology informaticists, highlighting the fundamentals and applications of advanced optical imaging techniques.

  15. MODIFIED TECHNIQUE OF TOTAL LARYNGECTOMY

    Directory of Open Access Journals (Sweden)

    Predrag Spirić

    2010-12-01

    Full Text Available Surgical technique of total laryngectomy is well presented in many surgical textbooks. Essentially, it has remained the same since Gluck an Soerensen in 1922 described all its details. Generally, it stresses the U shape skin incision with releasing laryngeal structures and removing larynx from up to down. Further, pharyngeal reconstruction is performed with different kinds of sutures in two or more layers and is finished with skin suture and suction drainage. One of worst complications following this surgery is pharyngocutaneous fistula (PF. Modifications proposed in this this article suggests vertical skin incision with larynx removal from below upwards. In pharyngeal reconstruction we used the running locked suture in submucosal plan with „tobacco sac“ at the end on the tongue base instead of traditional T shaped suture. Suction drains were not used.The aim of study was to present the modified surgical technique of total laryingectomy and its impact on hospital stay duration and pharyngocutanous fistula formation. In this randomized study we analyzed 49 patients operated with modified surgical technique compared to 49 patient operated with traditional surgical technique of total laryngectomy. The modified technique of total laryngectomy was presented. Using modified technique we managed to decrease the PF percentage from previous 20,41% to acceptable 8,16% (p=0,0334. Also, the average hospital stay was shortened from 14,96 to 10,63 days (t =-2.9850; p=0.0358.The modified technique of total laryngectomy is safe, short and efficient surgical intervention which decreases the number of pharyngocutaneos fistulas and shortens the hospital stay.

  16. LANDING TECHNIQUES IN BEACH VOLLEYBALL

    Directory of Open Access Journals (Sweden)

    Markus Tilp

    2013-09-01

    Full Text Available The aims of the present study were to establish a detailed and representative record of landing techniques (two-, left-, and right-footed landings in professional beach volleyball and compare the data with those of indoor volleyball. Beach volleyball data was retrieved from videos taken at FIVB World Tour tournaments. Landing techniques were compared in the different beach and indoor volleyball skills serve, set, attack, and block with regard to sex, playing technique, and court position. Significant differences were observed between men and women in landings following block actions (χ²(2 = 18.19, p < 0.01 but not following serve, set, and attack actions. Following blocking, men landed more often on one foot than women. Further differences in landings following serve and attack with regard to playing technique and position were mainly observed in men. The comparison with landing techniques in indoor volleyball revealed overall differences both in men (χ²(2 = 161.4, p < 0.01 and women (χ²(2 = 84.91, p < 0.01. Beach volleyball players land more often on both feet than indoor volleyball players. Besides the softer surface in beach volleyball, and therefore resulting lower loads, these results might be another reason for fewer injuries and overuse conditions compared to indoor volleyball

  17. Landing Techniques in Beach Volleyball

    Science.gov (United States)

    Tilp, Markus; Rindler, Michael

    2013-01-01

    The aims of the present study were to establish a detailed and representative record of landing techniques (two-, left-, and right-footed landings) in professional beach volleyball and compare the data with those of indoor volleyball. Beach volleyball data was retrieved from videos taken at FIVB World Tour tournaments. Landing techniques were compared in the different beach and indoor volleyball skills serve, set, attack, and block with regard to sex, playing technique, and court position. Significant differences were observed between men and women in landings following block actions (χ2(2) = 18.19, p volleyball revealed overall differences both in men (χ2(2) = 161.4, p volleyball players land more often on both feet than indoor volleyball players. Besides the softer surface in beach volleyball, and therefore resulting lower loads, these results might be another reason for fewer injuries and overuse conditions compared to indoor volleyball. Key Points About 1/3 of all jumping actions in beach volleyball result in a landing on one foot. Especially following block situations men land on one foot more often than women. Landing techniques are related to different techniques and positions. Landings on one foot are less common in beach volleyball than indoor volleyball. This could be a reason for fewer injuries and overuse conditions. PMID:24149150

  18. Authentication techniques for smart cards

    International Nuclear Information System (INIS)

    Nelson, R.A.

    1994-02-01

    Smart card systems are most cost efficient when implemented as a distributed system, which is a system without central host interaction or a local database of card numbers for verifying transaction approval. A distributed system, as such, presents special card and user authentication problems. Fortunately, smart cards offer processing capabilities that provide solutions to authentication problems, provided the system is designed with proper data integrity measures. Smart card systems maintain data integrity through a security design that controls data sources and limits data changes. A good security design is usually a result of a system analysis that provides a thorough understanding of the application needs. Once designers understand the application, they may specify authentication techniques that mitigate the risk of system compromise or failure. Current authentication techniques include cryptography, passwords, challenge/response protocols, and biometrics. The security design includes these techniques to help prevent counterfeit cards, unauthorized use, or information compromise. This paper discusses card authentication and user identity techniques that enhance security for microprocessor card systems. It also describes the analysis process used for determining proper authentication techniques for a system

  19. Radar rainfall image repair techniques

    Directory of Open Access Journals (Sweden)

    Stephen M. Wesson

    2004-01-01

    Full Text Available There are various quality problems associated with radar rainfall data viewed in images that include ground clutter, beam blocking and anomalous propagation, to name a few. To obtain the best rainfall estimate possible, techniques for removing ground clutter (non-meteorological echoes that influence radar data quality on 2-D radar rainfall image data sets are presented here. These techniques concentrate on repairing the images in both a computationally fast and accurate manner, and are nearest neighbour techniques of two sub-types: Individual Target and Border Tracing. The contaminated data is estimated through Kriging, considered the optimal technique for the spatial interpolation of Gaussian data, where the 'screening effect' that occurs with the Kriging weighting distribution around target points is exploited to ensure computational efficiency. Matrix rank reduction techniques in combination with Singular Value Decomposition (SVD are also suggested for finding an efficient solution to the Kriging Equations which can cope with near singular systems. Rainfall estimation at ground level from radar rainfall volume scan data is of interest and importance in earth bound applications such as hydrology and agriculture. As an extension of the above, Ordinary Kriging is applied to three-dimensional radar rainfall data to estimate rainfall rate at ground level. Keywords: ground clutter, data infilling, Ordinary Kriging, nearest neighbours, Singular Value Decomposition, border tracing, computation time, ground level rainfall estimation

  20. Twin - Arch technique. Revival of the "edgewise -Technique"?

    Directory of Open Access Journals (Sweden)

    Jacob Karp

    2012-01-01

    The SNB – Bracket brings a new dimension into the orthodontic world which is most apparent in extraction cases. Its Teflon – like material has a very low friction coefficient thus, reducing the treatment time considerably. Through the use of low dimensioned arch wires, the Twin – Arch Technique becomes a Light – wire system and simultaneously provides good anchorage and torque control.

  1. The Matador Technique: A technique to improve prostatic ...

    African Journals Online (AJOL)

    A. Pai

    Abstract. The accuracy of brachytherapy seed implantation is reduced by the movement of the prostate when needles are introduced transperineally. This report describes a simple method of introducing the first two needles, which reduces prostate deflection. This technique is analogous to the way a matador uses two ...

  2. Overview of nonchemical decontamination techniques

    International Nuclear Information System (INIS)

    Allen, R.P.

    1984-09-01

    The decontamination techniques summarized in this paper represent a variety of surface cleaning methods developed or adapted for component and facility-type decontamination applications ranging from small hand tools to reactor cavities and other large surface areas. The major conclusion is that decontamination is a complex, demanding technical discipline. It requires knowledgeable, experienced and well-trained personnel to select proper techniques and combinations of techniques for the varied plant applications and to realize their full performance potential. Unfortunately, decontamination in many plants has the lowest priority of almost any activity. Operators are unskilled and turnover is so frequent that expensive decontamination capabilities remain unused while decontamination operations revert to the most rudimentary type of hand scrubbing and water spray cleaning

  3. Ultrasonic techniques validation on shell

    International Nuclear Information System (INIS)

    Navarro, J.; Gonzalez, E.

    1998-01-01

    Due to the results obtained in several international RRT during the 80's, it has been necessary to prove the effectiveness of the NDT techniques. For this reason it has been imperative to verify the goodness of the Inspection Procedure over different mock-ups, representative of the inspection area and with real defects. Prior to the revision of the inspection procedure and with the aim of updating the techniques used, it is a good practice to perform different scans on the mock-ups until the validation is achieved. It is at this point, where all the parameters of the inspection at hands are defined; transducer, step, scan direction,... and what it's more important, it will be demonstrated that the technique to be used for the area required to inspection is suitable to evaluate the degradation phenomena that could appear. (Author)

  4. The Algebraic Reconstruction Technique (ART)

    International Nuclear Information System (INIS)

    Raparia, D.; Alessi, J.; Kponou, A.

    1997-01-01

    Projections of charged particle beam current density (profiles) are frequently used as a measure of beam position and size. In conventional practice only two projections, usually horizontal and vertical, are measured. This puts a severe limit on the detail of information that can be achieved. A third projection provides a significant improvement. The Algebraic Reconstruction Technique (ART) uses three or more projections to reconstruct 3-dimensional density profiles. At the 200 MeV H-linac, we have used this technique to measure beam density, and it has proved very helpful, especially in helping determine if there is any coupling present in x-y phase space. We will present examples of measurements of current densities using this technique

  5. History of the Buttonhole Technique.

    Science.gov (United States)

    Misra, Madhukar

    2015-01-01

    The constant side method of access cannulation in hemodialysis, popularly known as the 'buttonhole' method, has an interesting history. Dr. Zbylut J. Twardowski, a Polish nephrologist, discovered this technique by pure serendipity in 1972. A patient with a complicated vascular access history and limited options for cannulation was repeatedly 'stuck' at the same sites by a nurse. Soon it was noticed that the cannulation at the same spot became easier with time. Since the needles were being reused, the sharpness of the needles decreased with time and the bluntness of the needle seemed to minimize the damage to the cannulation tract (another serendipity!). This method soon became popular among patients, and many patients started using this technique. This chapter traces the invention of this technique and its subsequent development following Dr. Twardowski's emigration to the USA. © 2015 S. Karger AG, Basel.

  6. New techniques in neutron scattering

    International Nuclear Information System (INIS)

    Hayter, J.B.

    1993-01-01

    New neutron sources being planned, such as the Advanced Neutron Source (ANS) or the European Spallation Source (ESS), will provide an order of magnitude flux increase over what is available today, but neutron scattering will still remain a signal-limited technique. At the same time, the development of new materials, such as polymer and ceramic composites or a variety of complex fluids, will increasingly require neutron-based research. This paper will discuss some of the new techniques which will allow us to make better use of the available neutrons, either through improved instrumentation or through sample manipulation. Discussion will center primarily on unpolarized neutron techniques since polarized neutrons will be the subject of the next paper. (author)

  7. Resolution enhancement techniques in microscopy

    Science.gov (United States)

    Cremer, Christoph; Masters, Barry R.

    2013-05-01

    We survey the history of resolution enhancement techniques in microscopy and their impact on current research in biomedicine. Often these techniques are labeled superresolution, or enhanced resolution microscopy, or light-optical nanoscopy. First, we introduce the development of diffraction theory in its relation to enhanced resolution; then we explore the foundations of resolution as expounded by the astronomers and the physicists and describe the conditions for which they apply. Then we elucidate Ernst Abbe's theory of optical formation in the microscope, and its experimental verification and dissemination to the world wide microscope communities. Second, we describe and compare the early techniques that can enhance the resolution of the microscope. Third, we present the historical development of various techniques that substantially enhance the optical resolution of the light microscope. These enhanced resolution techniques in their modern form constitute an active area of research with seminal applications in biology and medicine. Our historical survey of the field of resolution enhancement uncovers many examples of reinvention, rediscovery, and independent invention and development of similar proposals, concepts, techniques, and instruments. Attribution of credit is therefore confounded by the fact that for understandable reasons authors stress the achievements from their own research groups and sometimes obfuscate their contributions and the prior art of others. In some cases, attribution of credit is also made more complex by the fact that long term developments are difficult to allocate to a specific individual because of the many mutual connections often existing between sometimes fiercely competing, sometimes strongly collaborating groups. Since applications in biology and medicine have been a major driving force in the development of resolution enhancing approaches, we focus on the contribution of enhanced resolution to these fields.

  8. Surface analysis the principal techniques

    CERN Document Server

    Vickerman, John C

    2009-01-01

    This completely updated and revised second edition of Surface Analysis: The Principal Techniques, deals with the characterisation and understanding of the outer layers of substrates, how they react, look and function which are all of interest to surface scientists. Within this comprehensive text, experts in each analysis area introduce the theory and practice of the principal techniques that have shown themselves to be effective in both basic research and in applied surface analysis. Examples of analysis are provided to facilitate the understanding of this topic and to show readers how they c

  9. Mass spectrometry. [review of techniques

    Science.gov (United States)

    Burlingame, A. L.; Kimble, B. J.; Derrick, P. J.

    1976-01-01

    Advances in mass spectrometry (MS) and its applications over the past decade are reviewed in depth, with annotated literature references. New instrumentation and techniques surveyed include: modulated-beam MS, chromatographic MS on-line computer techniques, digital computer-compatible quadrupole MS, selected ion monitoring (mass fragmentography), and computer-aided management of MS data and interpretation. Areas of application surveyed include: organic MS and electron impact MS, field ionization kinetics, appearance potentials, translational energy release, studies of metastable species, photoionization, calculations of molecular orbitals, chemical kinetics, field desorption MS, high pressure MS, ion cyclotron resonance, biochemistry, medical/clinical chemistry, pharmacology, and environmental chemistry and pollution studies.

  10. Radioimmunoassay and other related techniques

    International Nuclear Information System (INIS)

    Zarkawi, Moutaz

    1993-04-01

    The article reviews principles, requirements and reliability criteria of radioimmunoassay (RIA). Since basic reactions involved in RIA and related techniques are derived from reactions which take place in the immune system (IS) of humans and animals, the IS and the way it works will be described. In addition to RIA which involves the use of isotopes as tracers (labels), other non-radioisotopic and recent immunoassay techniques i.e. enzyme-linked immunosorbent assay (ELISA), chemiluminescence immunoassay (CLIA) and fluoroimmunoassay (FIA) will be dealt with. Some important and related terms will be defined and explained. (author). 59 refs., 4 figs

  11. Indirect techniques in nuclear astrophysics

    International Nuclear Information System (INIS)

    Mukhamedzhanov, A.M.; Tribble, R.E.; Blokhintsev, L.D.; Cherubini, S.; Spitaleri, C.; Kroha, V.; Nunes, F.M.

    2005-01-01

    It is very difficult or often impossible to measure in the lab conditions nuclear cross sections at astrophysically relevant energies. That is why different indirect techniques are used to extract astrophysical information. In this talk different experimental possibilities to get astrophysical information using radioactive and stable beams will be addressed. 1. The asymptotic normalization coefficient (ANC) method. 2. Radiative neutron captures are determined by the spectroscopic factors (SP). A new experimental technique to determine the neutron SPs will be addressed. 3. 'Trojan Horse' is another unique indirect method, which allows one to extract the astrophysical factors for direct and resonant nuclear reactions at astrophysically relevant energies. (author)

  12. Urologic imaging and interventional techniques

    International Nuclear Information System (INIS)

    Bush, W.H.

    1989-01-01

    This book provides an overview of all imaging modalities and invasive techniques of the genitourinary system. Three general chapters discuss ionic and nonionic contrast media, the management of reactions to contrast media, and radiation doses from various uroradiologic procedures. Chapters are devoted to intravenous pyelography, computed tomography, magnetic resonance imaging, ultrasound, nuclear medicine, lymphography, arteriography, and venography. Two chapters discuss the pediatric applications of uroradiology and ultrasound. Two chapters integrate the various imaging techniques of the upper and lower genitourinary systems into an algorithmic approach for various pathologic entities

  13. Slit aperture technique for mammography

    International Nuclear Information System (INIS)

    Friedrich, M.

    1984-01-01

    Following a discussion of various principles used in the elimination of scatter, the prototype of a simple slit aperture mammography apparatus is described (modified Mammomat, Siemens). The main advantage of this technique compared with grid mammography is a halving of the radiation dose for identical image quality, using an identical film system. The technical requirements (heavy duty tube, new generator) are, however, considerable. If the film-screen systems currently in use are to remain the common systems for the future, then the development of a multi-lamellar slit diaphragm technique carries much promise for mammography. (orig.) [de

  14. Computer animation algorithms and techniques

    CERN Document Server

    Parent, Rick

    2012-01-01

    Driven by the demands of research and the entertainment industry, the techniques of animation are pushed to render increasingly complex objects with ever-greater life-like appearance and motion. This rapid progression of knowledge and technique impacts professional developers, as well as students. Developers must maintain their understanding of conceptual foundations, while their animation tools become ever more complex and specialized. The second edition of Rick Parent's Computer Animation is an excellent resource for the designers who must meet this challenge. The first edition establ

  15. Reactor vital equipment determination techniques

    International Nuclear Information System (INIS)

    Bott, T.F.; Thomas, W.S.

    1983-01-01

    The Reactor Vital Equipment Determination Techniques program at the Los Alamos National Laboratory is discussed. The purpose of the program is to provide the Nuclear Regulatory Commission (NRC) with technical support in identifying vital areas at nuclear power plants using a fault-tree technique. A reexamination of some system modeling assumptions is being performed for the Vital Area Analysis Program. A short description of the vital area analysis and supporting research on modeling assumptions is presented. Perceptions of program modifications based on the research are outlined, and the status of high-priority research topics is discussed

  16. Physics aids new medical techniques

    CERN Document Server

    CERN. Geneva

    2001-01-01

    Since the discovery of X-rays, fundamental physics has been a source of ideas for radiography and medical imaging. A new imaging method firmly rooted in particle physics was chosen by Time magazine as one of its "Inventions of the Year 2000". The award-winning invention in the medical science category was a scanner that combined the advantages of computer tomography with positron emission tomography. The use of these techniques, which depend on detecting and analysing electromagnetic radiation (X-rays or gamma rays respectively), show that detection techniques from particle physics have made, and continue to make, essential contributions to medical science. (0 refs).

  17. Cuban agriculture and nuclear techniques

    International Nuclear Information System (INIS)

    Labrada Remon, A.; Perez Talavera, S.

    1997-01-01

    The application of nuclear techniques to agriculture emerged in Cuba at the end of the 60s. At the beginning only few researchers used these techniques for stimulating or mutational purposes. At the end of the 80 s systematic research began for its possible application to existing agricultural problems among which we can highlight radiomutable genesis and the determination of diagnostic damage of seeds by x-rays, plant nutrition and soil fertility, efficient water use, animal nutrition, reproduction and health as well as pest control

  18. Techniques and indications in radiology

    International Nuclear Information System (INIS)

    Lange, S.

    1987-01-01

    The stated purpose of this book is to review modern radiologic diagnostic techniques as applied to the study of the kidney and urinary tract, and their pertinent indications. This goal is partially accomplished in the first two segments of the book, which consist of about 100 pages. These include a synoptic description of various techniques - including classic uroradiologic studies such as excretory urography and retrograde pyelography, plus sonography, computed tomography, angiography, and nuclear medicine. The diagnostic signs and the differential diagnoses are fairly well described, aided by a profusion of tables and diagrams. The overall quality of the reproduction of the illustrations is good

  19. Advanced Intellect-Augmentation Techniques.

    Science.gov (United States)

    Engelbart, D. C.

    This progress report covers a two-year project which is part of a program that is exploring the value of computer aids in augmenting human intellectual capability. The background and nature of the program, its resources, and the activities it has undertaken are outlined. User experience in applying augmentation tools and techniques to various…

  20. Biopsy techniques for intraocular tumors

    Directory of Open Access Journals (Sweden)

    Pukhraj Rishi

    2016-01-01

    Full Text Available Biopsy involves the surgical removal of a tissue specimen for histopathologic evaluation. Most intraocular tumors are reliably diagnosed based on the clinical evaluation or with noninvasive diagnostic techniques. However, accurately diagnosing a small percentage of tumors can be challenging. A tissue biopsy is thus needed to establish a definitive diagnosis and plan the requisite treatment. From fine-needle aspiration biopsy (FNAB to surgical excision, all tissue collection techniques have been studied in the literature. Each technique has its indications and limitations. FNAB has been reported to provide for 88-95% reliable and safe ophthalmic tumor diagnosis and has gained popularity for prognostic purposes and providing eye conserving treatment surgeries. The technique and instrumentation for biopsy vary depending upon the tissue involved (retina, choroid, subretinal space, vitreous, and aqueous, suspected diagnosis, size, location, associated retinal detachment, and clarity of the media. The cytopathologist confers a very important role in diagnosis and their assistance plays a key role in managing and planning the treatment for malignancies.

  1. New techniques for wound debridement.

    Science.gov (United States)

    Madhok, Brijesh M; Vowden, Kathryn; Vowden, Peter

    2013-06-01

    Debridement is a crucial component of wound management. Traditionally, several types of wound debridement techniques have been used in clinical practice such as autolytic, enzymatic, biodebridement, mechanical, conservative sharp and surgical. Various factors determine the method of choice for debridement for a particular wound such as suitability to the patient, the type of wound, its anatomical location and the extent of debridement required. Recently developed products are beginning to challenge traditional techniques that are currently used in wound bed preparation. The purpose of this review was to critically evaluate the current evidence behind the use of these newer techniques in clinical practice. There is some evidence to suggest that low frequency ultrasound therapy may improve healing rates in patients with venous ulcers and diabetic foot ulcers. Hydrosurgery debridement is quick and precise, but the current evidence is limited and further studies are underway. Debridement using a monofilament polyester fibre pad and plasma-mediated bipolar radiofrequency ablation are both very new techniques. The initial evidence is limited, and further studies are warranted to confirm their role in management of chronic wounds. © 2013 The Authors. International Wound Journal © 2013 John Wiley & Sons Ltd and Medicalhelplines.com Inc.

  2. Novel radar techniques and applications

    CERN Document Server

    Klemm, Richard; Lombardo, Pierfrancesco; Nickel, Ulrich

    2017-01-01

    Novel Radar Techniques and Applications presents the state-of-the-art in advanced radar, with emphasis on ongoing novel research and development and contributions from an international team of leading radar experts. This volume covers: Real aperture array radar; Imaging radar and Passive and multistatic radar.

  3. Some techniques of correlation experiments

    International Nuclear Information System (INIS)

    Allas, R.G.

    1976-01-01

    Some general remarks concerning correlation techniques are made. Most of the remarks are limited to correlated pairs of charged particles. The relatively simple system 3 He + 3 H → A + B + C, where all possible charged particle pairs A,B are detected and particle C is left undetected either charged or neutral, is considered. (G.T.H.)

  4. Core calculational techniques and procedures

    International Nuclear Information System (INIS)

    Romano, J.J.

    1977-10-01

    Described are the procedures and techniques employed by B and W in core design analyses of power peaking, control rod worths, and reactivity coefficients. Major emphasis has been placed on current calculational tools and the most frequently performed calculations over the operating power range

  5. Projective techniques in consumer research

    African Journals Online (AJOL)

    privaat

    Various projective techniques for personality assess- ment and psychoanalytic treatment in clinical psychol- .... Some social conventions or barriers may constrain the expression of feelings and reporting of behav- .... ject-stipulated characteristic. Brand mapping may be used in new product development and as a way to.

  6. New techniques for particle accelerators

    International Nuclear Information System (INIS)

    Sessler, A.M.

    1990-06-01

    A review is presented of the new techniques which have been proposed for use in particle accelerators. Attention is focused upon those areas where significant progress has been made in the last two years--in particular, upon two-beam accelerators, wakefield accelerators, and plasma focusers. 26 refs., 5 figs., 1 tab

  7. BNFL decommissioning strategy and techniques

    International Nuclear Information System (INIS)

    Taylor, D.

    2002-01-01

    This paper provides an overview of the range of reactor decommissioning projects being managed by BNFL, both on its own sites and for other client organizations in the UK and abroad. It also describes the decommissioning strategies and techniques that have been developed by BNFL and adopted in order to carry out this work

  8. Affinity biosensors: techniques and protocols

    National Research Council Canada - National Science Library

    Rogers, Kim R; Mulchandani, Ashok

    1998-01-01

    ..., and government to begin or expand their biosensors research. This volume, Methods in Biotechnology vol. 7: Affinity Biosensors: Techniques and Protocols, describes a variety of classical and emerging transduction technologies that have been interfaced to bioaffinity elements (e.g., antibodies and receptors). Some of the reas...

  9. Gamm-ray absorption techniques

    International Nuclear Information System (INIS)

    Charlton, J.S.

    1986-01-01

    In this chapter the principles of gamma-ray absorption are described and important applications in plant and process techniques such as measurement of thickness of deposits on pipes, checking for voids in concrete, metal corrosion, measurement of the density of materials inside vessels in industrial radiography are discussed. (U.K.)

  10. Field Testing of Geophysical Techniques.

    Science.gov (United States)

    1981-11-01

    influence drainage and groundwater movement in the surrounding area. Presumably, the direction of groundwater movement is to the north and out of the...applicable. Specifically, these additional techniques are: e Audio magneto- telluric (AMT) resistivity * Electromagnetics a Ground-probing radar Both

  11. Inoculation Technique for Fungus Cultures

    Science.gov (United States)

    Fusaro, Ramon M.

    1972-01-01

    A plastic straw and wood applicator stick serve as a simple, inexpensive, and disposable inoculation unit for fungal studies. The method gives a uniform and intact inoculum. The technique is especially useful because a large number of agar plates can be inoculated rapidly. Images PMID:5059618

  12. Developments in functional neuroimaging techniques

    International Nuclear Information System (INIS)

    Aine, C.J.

    1995-01-01

    A recent review of neuroimaging techniques indicates that new developments have primarily occurred in the area of data acquisition hardware/software technology. For example, new pulse sequences on standard clinical imagers and high-powered, rapidly oscillating magnetic field gradients used in echo planar imaging (EPI) have advanced MRI into the functional imaging arena. Significant developments in tomograph design have also been achieved for monitoring the distribution of positron-emitting radioactive tracers in the body (PET). Detector sizes, which pose a limit on spatial resolution, have become smaller (e.g., 3--5 mm wide) and a new emphasis on volumetric imaging has emerged which affords greater sensitivity for determining locations of positron annihilations and permits smaller doses to be utilized. Electromagnetic techniques have also witnessed growth in the ability to acquire data from the whole head simultaneously. EEG techniques have increased their electrode coverage (e.g., 128 channels rather than 16 or 32) and new whole-head systems are now in use for MEG. But the real challenge now is in the design and implementation of more sophisticated analyses to effectively handle the tremendous amount of physiological/anatomical data that can be acquired. Furthermore, such analyses will be necessary for integrating data across techniques in order to provide a truly comprehensive understanding of the functional organization of the human brain

  13. Objective techniques for psychological assessment

    Science.gov (United States)

    Wortz, E.; Hendrickson, W.; Ross, T.

    1973-01-01

    A literature review and a pilot study are used to develop psychological assessment techniques for determining objectively the major aspects of the psychological state of an astronaut. Relationships between various performance and psychophysiological variables and between those aspects of attention necessary to engage successfully in various functions are considered in developing a paradigm to be used for collecting data in manned isolation chamber experiments.

  14. Spline techniques for magnetic fields

    International Nuclear Information System (INIS)

    Aspinall, J.G.

    1984-01-01

    This report is an overview of B-spline techniques, oriented toward magnetic field computation. These techniques form a powerful mathematical approximating method for many physics and engineering calculations. In section 1, the concept of a polynomial spline is introduced. Section 2 shows how a particular spline with well chosen properties, the B-spline, can be used to build any spline. In section 3, the description of how to solve a simple spline approximation problem is completed, and some practical examples of using splines are shown. All these sections deal exclusively in scalar functions of one variable for simplicity. Section 4 is partly digression. Techniques that are not B-spline techniques, but are closely related, are covered. These methods are not needed for what follows, until the last section on errors. Sections 5, 6, and 7 form a second group which work toward the final goal of using B-splines to approximate a magnetic field. Section 5 demonstrates how to approximate a scalar function of many variables. The necessary mathematics is completed in section 6, where the problems of approximating a vector function in general, and a magnetic field in particular, are examined. Finally some algorithms and data organization are shown in section 7. Section 8 deals with error analysis

  15. Advances of the IBIC technique

    Energy Technology Data Exchange (ETDEWEB)

    Breese, M B.H.; Laird, J S; Jamieson, D N [Melbourne Univ., Parkville, VIC (Australia). School of Physics

    1994-12-31

    The ion beam induced charge (IBIC) technique has been used for a wide variety of analytical applications in the study of semiconductor materials. This paper briefly reviews these uses and identifies those areas which require further development in order to facilitate the more widespread use of the IBIC method. Progress towards implementing these improvements is discussed. 14 refs., 1 fig.

  16. Tokamak impurity-control techniques

    International Nuclear Information System (INIS)

    Schmidt, J.A.

    1980-01-01

    A brief review is given of the impurity-control functions in tokamaks, their relative merits and disadvantages and some prominent edge-interaction-control techniques, and there is a discussion of a new proposal, the particle scraper, and its potential advantages. (author)

  17. Algorithmic approach to diagram techniques

    International Nuclear Information System (INIS)

    Ponticopoulos, L.

    1980-10-01

    An algorithmic approach to diagram techniques of elementary particles is proposed. The definition and axiomatics of the theory of algorithms are presented, followed by the list of instructions of an algorithm formalizing the construction of graphs and the assignment of mathematical objects to them. (T.A.)

  18. Computerized Proof Techniques for Undergraduates

    Science.gov (United States)

    Smith, Christopher J.; Tefera, Akalu; Zeleke, Aklilu

    2012-01-01

    The use of computer algebra systems such as Maple and Mathematica is becoming increasingly important and widespread in mathematics learning, teaching and research. In this article, we present computerized proof techniques of Gosper, Wilf-Zeilberger and Zeilberger that can be used for enhancing the teaching and learning of topics in discrete…

  19. Hlaallele Detection Using Molecular Techniques

    Directory of Open Access Journals (Sweden)

    Philip A. Dyer

    1993-01-01

    Full Text Available There are now many molecular biological techniques available to define HLA class I and class II alleles. Some of these are also applicable to other human polymorphic genes, in particular to those non-HLA genes encoded within the Mhc. The range of techniques available allows laboratories to choose those most suited to their purpose. The routine laboratory supporting solid organ transplants will need to type large numbers of potential recipients over a period of time, probably using PCR-SSOP while donors will be typed singly and rapidly using PCR-SSP with HLA allele compatibility determined by heteroduplex analysis. Laboratories supporting bone marrow transplantation, where time is less pressing, can choose from the whole range of techniques to determine accurately donor recipient Mhc compatibility. For disease studies, techniques defining precise HLA allele sequence polymorphisms are needed and high sample numbers have to be accommodated. When an association is established allele sequencing has to be used. In the near future, the precise role of HLA alleles in transplantation and disease susceptibility is likely to be established unambiguously.

  20. Advances of the IBIC technique

    Energy Technology Data Exchange (ETDEWEB)

    Breese, M.B.H.; Laird, J.S.; Jamieson, D.N. [Melbourne Univ., Parkville, VIC (Australia). School of Physics

    1993-12-31

    The ion beam induced charge (IBIC) technique has been used for a wide variety of analytical applications in the study of semiconductor materials. This paper briefly reviews these uses and identifies those areas which require further development in order to facilitate the more widespread use of the IBIC method. Progress towards implementing these improvements is discussed. 14 refs., 1 fig.

  1. New techniques in digital holography

    CERN Document Server

    Picart, Pascal

    2015-01-01

    A state of the art presentation of important advances in the field of digital holography, detailing advances related to fundamentals of digital holography, in-line holography applied to fluid mechanics, digital color holography, digital holographic microscopy, infrared holography, special techniques in full field vibrometry and inverse problems in digital holography

  2. Schlenk Techniques for Anionic Polymerization

    KAUST Repository

    Ratkanthwar, Kedar

    2015-09-01

    Anionic polymerization-high vacuum techniques (HVTs) are doubtlessly the most prominent and reliable experimental tools to prepare polymer samples with well-defined and, in many cases, complex macromolecular architectures. Due to the high demands for time and skilled technical personnel, HVTs are currently used in only a few research laboratories worldwide. Instead, most researchers in this filed are attracted to more facile Schlenk techniques. The basic principle of this technique followed in all laboratories is substantially the same, i.e. the use of alternate vacuum and inert gas atmosphere in glass apparatus for the purification/charging of monomer, solvents, additives, and for the manipulation of air-sensitive compounds such as alkyl metal initiators, organometallic or organic catalysts. However, it is executed quite differently in each research group in terms of the structure of Schlenk apparatus (manifolds, connections, purification/storage flasks, reactors, etc.), the use of small supplementary devices (soft tubing, cannulas, stopcocks, etc.) and experimental procedures. The operational methods are partly purpose-oriented while also featured by a high flexibility, which makes it impossible to describe in detail each specific one. In this chapter we will briefly exemplify the application of Schlenk techniques for anionic polymerization by describing the performance of a few experiments from our own work.

  3. Brain Friendly Techniques: Mind Mapping

    Science.gov (United States)

    Goldberg, Cristine

    2004-01-01

    Mind Mapping can be called the Swiss Army Knife for the brain, a total visual thinking tool or a multi-handed thought catcher. Invented by Tony Buzan in the early 1970s and used by millions around the world, it is a method that can be a part of a techniques repertoire when teaching information literacy, planning, presenting, thinking, and so…

  4. Uranium Detection - Technique Validation Report

    Energy Technology Data Exchange (ETDEWEB)

    Colletti, Lisa Michelle [Los Alamos National Lab. (LANL), Los Alamos, NM (United States). Chemistry Division; Garduno, Katherine [Los Alamos National Lab. (LANL), Los Alamos, NM (United States). Chemistry Division; Lujan, Elmer J. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States). Chemistry Division; Mechler-Hickson, Alexandra Marie [Los Alamos National Lab. (LANL), Los Alamos, NM (United States). Chemistry Division; Univ. of Wisconsin, Madison, WI (United States); May, Iain [Los Alamos National Lab. (LANL), Los Alamos, NM (United States). Chemistry Division; Reilly, Sean Douglas [Los Alamos National Lab. (LANL), Los Alamos, NM (United States). Chemistry Division

    2016-04-14

    As a LANL activity for DOE/NNSA in support of SHINE Medical Technologies™ ‘Accelerator Technology’ we have been investigating the application of UV-vis spectroscopy for uranium analysis in solution. While the technique has been developed specifically for sulfate solutions, the proposed SHINE target solutions, it can be adapted to a range of different solution matrixes. The FY15 work scope incorporated technical development that would improve accuracy, specificity, linearity & range, precision & ruggedness, and comparative analysis. Significant progress was achieved throughout FY 15 addressing these technical challenges, as is summarized in this report. In addition, comparative analysis of unknown samples using the Davies-Gray titration technique highlighted the importance of controlling temperature during analysis (impacting both technique accuracy and linearity/range). To fully understand the impact of temperature, additional experimentation and data analyses were performed during FY16. The results from this FY15/FY16 work were presented in a detailed presentation, LA-UR-16-21310, and an update of this presentation is included with this short report summarizing the key findings. The technique is based on analysis of the most intense U(VI) absorbance band in the visible region of the uranium spectra in 1 M H2SO4, at λmax = 419.5 nm.

  5. Digital synchronization and communication techniques

    Science.gov (United States)

    Lindsey, William C.

    1992-01-01

    Information on digital synchronization and communication techniques is given in viewgraph form. Topics covered include phase shift keying, modems, characteristics of open loop digital synchronizers, an open loop phase and frequency estimator, and a digital receiver structure using an open loop estimator in a decision directed architecture.

  6. Advances phase-lock techniques

    CERN Document Server

    Crawford, James A

    2008-01-01

    From cellphones to micrprocessors, to GPS navigation, phase-lock techniques are utilized in most all modern electronic devices. This high-level book takes a systems-level perspective, rather than circuit-level, which differentiates it from other books in the field.

  7. Novel radar techniques and applications

    CERN Document Server

    Klemm, Richard; Koch, Wolfgang

    2017-01-01

    Novel Radar Techniques and Applications presents the state-of-the-art in advanced radar, with emphasis on ongoing novel research and development and contributions from an international team of leading radar experts. This volume covers: Waveform diversity and cognitive radar and Target tracking and data fusion.

  8. Measurements Techniques for Gyrotron characterization

    International Nuclear Information System (INIS)

    Castro, P.J. de.

    1987-08-01

    Experiments planned for the characterization of the 35GHz girotron, which is being built at the Plasma Laboratory of INPE, are described. The methods of the measurements are presented and the required instrumentation and devices are specified. Special attention is given to the measurement techniques of the resonator electric field profile. (author) [pt

  9. New techniques for wine aging

    Directory of Open Access Journals (Sweden)

    m Hatice Kalkan Yıldırı

    2017-01-01

    Full Text Available The aging of wine requires a long time therefore it can cause loss of time and money. Therefore using of new techniques for wine aging shortens the length of aging time and wines may be placed on the market more quickly. Nowadays, gamma irradiation, ultrasonic waves, AC electric field and micro-oxygenation are the new techniques for wine aging. Gamma irradiation (after fermentation is accelerated physical maturation method. Gamma irradiation, in a suitable dosage (200 Gy, is a suitable method for improving some wine defects and producing a higher taste quality in wine. The 20 kHz ultrasonic waves aged wine much more quickly than standard aging, with similar quality. The wine treated by 20 kHz ultrasonic waves had a taste equivalent to 1 year aged wine. Wine maturing with AC electric field promises novel process accelerating aging process of fresh wine when suitable conditions are applied. As a result of research, an optimum treatment (electric field 600 V/cm and duration time 3 min was identified to accelerate wine aging. Harsh and pungent raw wine become harmonious and dainty. This process is equivalent to 6 month aging in oak barrel. Microoxygenation is a very important technique used in aging wines in order to improve their characteristics. The techniques of wine tank aging imply the use of small doses of oxygen (2 ml L−1 month−1 and the addition of wood pieces of oak to the wine. Studies concerning these new techniques demonstrated that maturation of wines become more quickly than standard maturation procedures with keeping and improving the wine quality.

  10. Point-source inversion techniques

    Science.gov (United States)

    Langston, Charles A.; Barker, Jeffrey S.; Pavlin, Gregory B.

    1982-11-01

    A variety of approaches for obtaining source parameters from waveform data using moment-tensor or dislocation point source models have been investigated and applied to long-period body and surface waves from several earthquakes. Generalized inversion techniques have been applied to data for long-period teleseismic body waves to obtain the orientation, time function and depth of the 1978 Thessaloniki, Greece, event, of the 1971 San Fernando event, and of several events associated with the 1963 induced seismicity sequence at Kariba, Africa. The generalized inversion technique and a systematic grid testing technique have also been used to place meaningful constraints on mechanisms determined from very sparse data sets; a single station with high-quality three-component waveform data is often sufficient to discriminate faulting type (e.g., strike-slip, etc.). Sparse data sets for several recent California earthquakes, for a small regional event associated with the Koyna, India, reservoir, and for several events at the Kariba reservoir have been investigated in this way. Although linearized inversion techniques using the moment-tensor model are often robust, even for sparse data sets, there are instances where the simplifying assumption of a single point source is inadequate to model the data successfully. Numerical experiments utilizing synthetic data and actual data for the 1971 San Fernando earthquake graphically demonstrate that severe problems may be encountered if source finiteness effects are ignored. These techniques are generally applicable to on-line processing of high-quality digital data, but source complexity and inadequacy of the assumed Green's functions are major problems which are yet to be fully addressed.

  11. Motion Capture Technique Applied Research in Sports Technique Diagnosis

    Directory of Open Access Journals (Sweden)

    Zhiwu LIU

    2014-09-01

    Full Text Available The motion capture technology system definition is described in the paper, and its components are researched, the key parameters are obtained from motion technique, the quantitative analysis are made on technical movements, the method of motion capture technology is proposed in sport technical diagnosis. That motion capture step includes calibration system, to attached landmarks to the tester; to capture trajectory, and to analyze the collected data.

  12. Sindrome de russel tumor diencefálico em uma criança

    Directory of Open Access Journals (Sweden)

    Luiz A. C. Roxo da Motta

    1990-03-01

    Full Text Available Apresenta-se o caso de criança do sexo masculino com síndrome de Russel devida a astrocitoma pilocítico localizado na região diencefálica. O diagnóstico foi realizado aos 16 meses de idade, mas sua sintomatologia se iniciou aos 4 meses, com emagrecimento progressivo. À internação apresentava-se com peso de 6150g e 74cm de estatura, emaciada, sem panículo adiposo, irritadica e com sinais de hipertensão intracraniana. Existia estrabismo convergente, nistagmo vertical do olho esquerdo e papiledema bilateral. Os reflexos tendinosos eram exaltados e tinha tetraparesia espástica. A avaliação endócrina demonstrou aumento basal do GH (23 ng/ml, do TSH (6,2 mUI/l e da prolactina (26 ng/ml. Os dois primeiros hormônios não responderam ao teste agudo com o TRH, enquanto a prolactina teve resposta pobre. Foi submetida a radioterapia com acelerador linear (dose total de 4000 rads e a cirurgia, na qual não se conseguiu extirpar todo o tumor, devido a seu tamanho. Nove meses após, a criança encontra-se bem, com apreciável ganho ponderai (2500g.

  13. Cistatina C, PCR, Log TG/HDLc e Sindrome Metabolica estao Relacionados a Microalbuminuria na Hipertensao

    Directory of Open Access Journals (Sweden)

    Rafaela do Socorro Souza e Silva Moura

    2014-01-01

    Full Text Available Fundamento: Em pacientes com hipertensão arterial sistêmica, a microalbuminúria é um marcador de lesão endotelial e está associada a um risco aumentado de doença cardiovascular. Objetivo: O objetivo do presente estudo foi determinar os fatores que influenciam a ocorrência de microalbumiúria em pacientes hipertensos com creatinina sérica menor que 1,5 mg/dL. Métodos: Foram incluídos no estudo 133 pacientes brasileiros atendidos em um ambulatório multidisciplinar para hipertensos. Pacientes com creatinina sérica maior do que 1,5 mg/dL e aqueles com diabete mellitus foram excluídos do estudo. A pressão arterial sistólica e diastólica foi aferida. O índice de massa corporal (IMC e a taxa de filtração glomerular estimada pela fórmula CKD-EPI foram calculados. Em um estudo transversal, creatinina, cistatina C, colesterol total, HDL colesterol, LDL colesterol, triglicerídeos, proteína C-reativa (PCR e glicose foram mensurados em amostra de sangue. A microalbuminúria foi determinada na urina colhida em 24 horas. Os hipertensos foram classificados pela presença de um ou mais critérios para síndrome metabólica. Resultados: Em análise de regressão múltipla, os níveis séricos de cistatina C, PCR, o índice aterogênico log TG/HDLc e a presença de três ou mais critérios para síndrome metabólica foram positivamente correlacionados com a microalbuminuria (r2: 0,277; p < 0,05. Conclusão: Cistatina C, PCR, log TG/HDLc e presença de três ou mais critérios para síndrome metabólica, independentemente da creatinina sérica, foram associados com a microalbuminúria, um marcador precoce de lesão renal e de risco cardiovascular em pacientes com hipertensão arterial essencial.

  14. Sentido de Coherencia y Sindrome de Burnout en el personal sanitario de Urgencias

    OpenAIRE

    Vega Martínez, Maria del Carmen

    2013-01-01

    El Sentido de coherencia es un término que hace referencia a la capacidad del individuo par aver su entorno individual y el mundo que les rodea. El Síndrome de Burnout es un problema que afecta a los profesionales sanitarios cada vez, proporcionándoles síntomas como: fatiga, insomnio, cefaleas, deterioro de comunicación con pacientes / otros profesionales y hasta se puede llegar a poner en riesgo la salud del paciente atendido. Después del pase de cuestionarios de forma adecuada a 69 pro...

  15. Imaging in Cushing's syndrome; Imagem em sindrome de Cushing

    Energy Technology Data Exchange (ETDEWEB)

    Sahdev, Anju; Evanson, Jane [St. Bartholomew' s Hospital, London (United Kingdom). Dept. of Diagnostic Imaging; Reznek, Rodney H. [St. Bartholomew' s Hospital, London (United Kingdom). Institute of Cancer. Cancer Imaging; Grossman, Ashley B. [St. Bartholomew' s Hospital, London (United Kingdom). Dept. of Endocrinology]. E-mail: anju.sahdev@bartsandthelondon.nhs.uk

    2007-11-15

    Once the diagnosis of Cushing's syndrome (CS) has been established, the main step is to differentiate between ACTH dependent and independent disease. In adults, 80% of CS is due to ACTH-dependent causes and 20% due to adrenal causes. ACTH-secreting neoplasms cause ACTH-dependent CS. These are usually anterior pituitary microadenomas, which result in the classic Cushing's disease. Non-pituitary ectopic sources of ACTH, such as a small-cell lung carcinoma or carcinoid tumours, are the source of the remainder of ACTH-dependent disease. In the majority of patients presenting with clinical and biochemical evidence of CS, modern non-invasive imaging can accurately and efficiently provide the cause and the nature of the underlying pathology. Imaging is essential for determining the source of ACTH in ectopic ACTH production, locating the pituitary tumours and distinguishing adrenal adenomas, carcinomas and hyperplasias. In our chapter we review the adrenal appearances in ACTH-dependent and ACTH-independent CS. We also include a discussion on the use of MRI and CT for the detection and management of pituitary ACTH secreting adenomas. CT of the chest, abdomen and pelvis with intravenous injection of contrast medium is the most sensitive imaging modality for the identification of the ectopic ACTH source and detecting adrenal pathology. MRI is used for characterising adrenal adenomas, problem solving in difficult cases and for detecting ACTH-secreting pituitary adenomas. (author)

  16. Strategie di coping e sindrome da burnout nei Vigili del Fuoco

    Directory of Open Access Journals (Sweden)

    Alessandra Curtacci

    2017-03-01

    Full Text Available In the last decades, we have seen a rapid growth in the culture of prevention, safety and care for people involved in dramatic events. These calamites, both natural and human made, can have a profound effect on the mental stability of individuals and communities. These effects can have consequences on people, which may go on for days, months and even years during the recovery, rebuilding and re-establishment of an ordinary situation. Each event due to these circumstances is an emergency from a technical-practical and also human point of view. And that is because people are forced to fight in order to survive physically and emotionally in a state of dangerousness and dramatic force. During an emergency it is necessary to help people recognize normality in their own reactions, which are consequences of a situation out of ordinary. A greater focus on the emotional and cognitive component of the person involved is needed. Actually, this component proves to be very important both for the successful management of the situation - being involved in the prevention and preparation phases - and for its contribution to a mitigation of the effects of a specific event. It is widely known that during an emergency, interventions by psychologists trained to face various contexts (e.g., incidents, natural disasters and so on and able to cooperate with other professionals are needed. The aim is to promote in the people involved, both rescuers and victims, the capacity to cope with the situation, in the short term and in the long term.

  17. SINDROME DE INMUNODEFICIENCIA ADQUIRIDA. COMPROMISO DEL CORAZÓN Y DE LOS VASOS

    Directory of Open Access Journals (Sweden)

    Dr. Jorge Yovanovich S.

    2015-03-01

    Full Text Available Las complicaciones cardiovasculares del SIDA, son a menudo asintomáticas, aunque en ocasiones pueden constituir la causa directa de muerte. Puede comprometerse el pericardio, miocardio, endocardio y los vasos, ya sea como manifestación de la enfermedad de base o como resultado de la terapia antirretroviral y su efecto sobre los factores de riesgo, en el contexto de una patología que es actualmente de evolución crónica y con mejores expectativas de sobrevida gracias a las nuevas drogas empleadas para su control y tratamiento. El objetivo de este artículo es presentar una revisión de los aspectos más relevantes del SIDA que comprometen al corazón y los vasos.

  18. Giperkortitsizm i metabolicheskiy sindrom: slozhnosti differentsial'noy diagnostiki i lecheniya

    Directory of Open Access Journals (Sweden)

    L K Dzeranova

    2012-06-01

    Full Text Available Hypercortisolism is a severe endocrine disorder that leads to all types of metabolic disturbances. The most frequent symptom of hypercortisolism is a specific weight gain and body fat distribution - "cushingoid" obesity which clinically reflects the pathological changes in protein, carbohydrate and lipids metabolism. We provide a clinical case of a patient with Cushing's disease. This clinical case represents challenges in the differential diagnosis of this rare endocrine disorder and metabolic syndrome, and specific approach in further evaluation and treatment of Cushing's disease that requires all the latest technology in this field to be employed.

  19. Heterotaxy syndrome: a case report; Sindrome de heterotaxia: relato de caso

    Energy Technology Data Exchange (ETDEWEB)

    Carneiro, Daniel de Souza; Arantes, Jamil Hussein de; Souza, Gustavo Veloso de; Barreto, Aline Santos; Cardoso, Mychaell Luciano; Gontijo, Flavia, E-mail: danielmed124@gmail.com [Hospital Madre Tereza, Belo Horizonte, MG (Brazil)

    2013-05-15

    The present report describes the findings at chest computed tomography angiography of a 28-year-old female patient with heterotaxy syndrome. This syndrome consists of a variety of anomalies of position and morphology of thoracoabdominal organs which do not follow the situs solitus or situs inversus arrangement. Imaging studies play a fundamental role in the individualization of the approach to the patient. (author)

  20. [Pure gonad dysgenesia or Swyer sindrome. A case report having tumoral development: melanoma].

    Science.gov (United States)

    Russo, D; Blanco, M; Falke, G; Rocca Rivarola, M; Séller, R; Puigdevall, J C; Bergada, C

    2006-10-01

    A 14 year old girl having 10-days lumbar pain, polaquiuria and moderate pain to palpation is reported. Blood and urine analysis were normal. Abdominal ultrasound scan showed cavity free and solid, rounded, heterogeneous, intrapelvic mass compressing bladder and uterus. Magnetic resonance image was performed showing right gonad compromise with extensive liver and sacro-lumbar spine invasion. Tumoral markers were ruled out. During surgery, primary tumor mass localizad in the right gonad was completely excised. Melanotic peritoneal and hepatic disemination were observed. The patient had left streak gonad and infantile uterus (2 x 3 cm). As gonad dysgenesia was suspected, high resolution cromosomic study was performed and resulted in cariotype 46 XY. Microscopy of the resected gonad showed primary gonad melanoma. Chemotherapy was instituted with no tumor response and the patient died two month later.

  1. [Dissociation of antihypertensive and metabolic response to losartan and spironolactone in experimental rats with metabolic sindrome].

    Science.gov (United States)

    Machado, Hussen; Pinheiro, Helady Sanders; Terra, Marcella Martins; Guerra, Martha de Oliveira; de Paula, Rogerio Baumgratz; Peters, Vera Maria

    2012-01-01

    The treatment of arterial hypertension (AH) in patients with metabolic syndrome (MS) is a challenge, since non drug therapies are difficult to implement and optimal pharmacological treatment is not fully established. To assess the blockade of the rennin angiotensin aldosterone system (RAAS) in blood pressure (BP) in renal function and morphology in an experimental model of MS induced by high fat diet. Wistar rats were fed on high fat diet from the fourth week of life, for 20 weeks. The groups received Losartan or Spironolactone from the eighth week of life. We weekly evaluated the body weight and BP by tail plethysmography. At the end of the experiment oral glucose tolerance, lipid profile, creatinine clearance tests, and the direct measurement of BP were performed. A morphometric kidney analysis was performed. The administration of high-fat diet was associated with the development of MS, characterized by central fat accumulation, hypertension, hyperglycemia and hypertriglyceridemia. In this model there were no changes in renal histomorphometry. The blockade of angiotensin II (Ang II) receptor AT1 prevented the development of hypertension. The mineralocorticoid blockage did not have antihypertensive efficacy but was associated with reduction of abdominal fat. The dissociation of the antihypertensive response to the blockades of Ang II receptors and mineralocorticoid indicates the involvement of Ang II in the pathogenesis of hypertension associated with obesity. Reduction of central obesity with Spironolactone suggests the presence of mineralocorticoid adipogenic effect.

  2. Acute gastrointestinal bleeding following aortic valve replacement in a patient with Heyde's sindrome. Case report.

    Science.gov (United States)

    De Palma, G D; Salvatori, F; Masone, S; Simeoli, I; Rega, M; Celiento, M; Persico, G

    2007-09-01

    A 58-year old man was admitted to the hospital because of melena. He had a 1-year history of mechanical aortic valve replacement and coronary stent placement because of myocardial infarction and he was taking warfarin and clopidogrel. Esophagogastroduodenoscopy and colonoscopy were negative for bleeding. Capsule endoscopy showed bleeding diffuse angiodysplasia of the small bowel. The patient was treated with octreotide 20 mg, at monthly interval. After 25 months there had been no recurrence of gastrointestinal bleeding. The case suggests that mechanical valve replacement may not prevent gastrointestinal bleeding in Heyde syndrome and that octreotide treatment should be considered in these cases.

  3. Relaciones de la grasa visceral y de tronco con el sindrome metabólico

    OpenAIRE

    Fernández Vázquez, Rosalía Asunción

    2016-01-01

    La obesidad central es uno de los componentes que conforman el conjunto de factores del síndrome metabólico. La obesidad central se asocia a una gran incidencia de diabetes tipo 2, resistencia a la insulina, hipertensión arterial y particularmente a las enfermedades cardiovasculares. Las acciones metabólicas del tejido adiposo visceral son por sí solas un factor de riesgo independiente para una serie de alteraciones metabólicas. Objetivos: Los objetivos de la presente tesis han sido estudiar ...

  4. Pengaruh pemberian yogurt sinbiotik tepung pisang tanduk terhadap profil lipid tikus sindrom metabolik

    Directory of Open Access Journals (Sweden)

    Zana Fitriana Octavia

    2017-04-01

    Full Text Available Background: The metabolic syndrome, which is characterized by hyperglycemia, obesity, dyslipidemia, hypertension, prothrombic and proinflamatory state, is a risk factor for cardiovascular disease and diabetes mellitus. The synbiotic yogurt of tanduk banana (Musa paradisiaca fa. corniculata flour contains lactic acid bacteria, fructooligosaccarides, flavonoids, and vitamin C which all of them play role in improving the lipid profile. Objective: The aim of this study was to prove the effect of synbiotic yogurt of tanduk banana flour on lipid profile of metabolic syndrome rats. Method: This study was an true experimental with pre-post test  control group design. The subject of this study were 18 metabolic syndrome male Wistar rats divided into 3 groups,i.e control group (standart diet, intervention group I (standart diet and synbiotic yogurt of banana flour 0,009 ml/g weight/day, and intervention group II (standart diet and synbiotic yogurt of banana flour 0,018 ml/g weight/day. The intervention period was 2 weeks. Different test before and after intervention used paired t-test. The difference test between groups used One-Way ANOVA and Kruskal wallis. Results: The result showed that both of intervention group improved lipid profile significantly (p<0,05. The intervention group II showed more effective improvement of lipid profile significantly (p<0,05 than intervention group I. The intervention group II decreased triglycerides level 41,56%; total cholesterol level 41,39%; LDL-cholesterol level 57,5%; and increased HDL-cholesterol level 139,62%. Conclucion: The intervention of synbiotic yogurt of  tanduk banana flour can decrease triglyceride level, total cholesterol level, LDL-cholesterol level, and increase HDL-cholesterol level.

  5. Sindrome de la cintilla iliotibial: presentación de un caso clínico

    OpenAIRE

    Gómez Verde, Virginia

    2013-01-01

    Introducción: el síndrome de la cintilla iliotibial es un cuadro clínico relativamente frecuente en el ámbito deportivo, sobre todo en personas que participan en actividades físicas de resistencia, principalmente en corredores de fondo y ciclistas. Se caracteriza por dolor agudo en la cara externa de rodilla y se ha asociado con una flexoextensión repetitiva de rodilla en combinación con una banda iliotibial tensa Objetivo: aplicar un plan de intervención fisioterapéutico en...

  6. Osseous involvement in AIDS patients; Comprometimento osseo no paciente com sindrome da imunodeficiencia adquirida

    Energy Technology Data Exchange (ETDEWEB)

    Marchiori, Edson [Universidade Federal Fluminense, Niteroi, RJ (Brazil). Dept. de Radiologia]|[Universidade Federal, Rio de Janeiro, RJ (Brazil); Pereira, Abercio Arantes [Universidade Federal, Rio de Janeiro, RJ (Brazil). Faculdade de Medicina

    1995-07-01

    The radiological findings of eight patients with the acquired immunodeficiency syndrome (AIDS) who developed bone lesions were analyzed in conjunction with twelve similar published cases. Our series included three patients with lymphoma, two with bacillary angiomatosis, two with tuberculosis and one with staphylococcal osteomyelitis. All the lesions were lithic regardless of the etiology. Both in our cases and in those previously published bone repair was only seen in cases of bacillary angiomatosis treated with erythromycin. No pathognomonic findings were observed. However, the association of skin and bone lesions in immuno deficient patients should always bring the consideration of bacillary angiomatosis in the differential diagnosis. This is particularly relevant since this a condition amenable to treatment once correctly identified. The radiological findings in the lymphoma and tuberculosis patients have not been described previously. (author). 9 refs., 7 figs., 3 tabs.

  7. Sindrome de Sturge – Weber - Os síndromes raros também existem

    Directory of Open Access Journals (Sweden)

    Cátia Canelas

    2015-12-01

    Recorreu ao serviço de urgência por crises convulsivas tónico-clónicas generalizadas quase diárias desde há 1 mês. Ao exame físico o doente apresentava-se pouco colaborante mas hemodinamicamente estável. Ao nível da cabeça eram evidentes diversas alterações: macrocefalia, hipertrofia dos tecidos moles da face com manchas em vinho do porto exuberantes bilaterais com distribuição oftálmica, maxilar e mandibular do nervo trigémio, e hemangiomas conjuntivais bilaterais (Fig. 1. Ao exame neurológico apresentava hemiparesia esquerda grau 3/5 em ambos os membros. Realizou tomografia computorizada crânio-encefálica que mostrou atrofia do hemisfério encefálico direito com calcificação cortical de configuração giriforme de predomínio frontal e occipital e maior volume do plexo coroide do ventrículo lateral direito (Fig.2, aspetos descritos na literatura como característicos de SSW4. Analiticamente sem alterações nomeadamente da função tiroideia. O doente foi observado por oftalmologia tendo sido diagnosticado glaucoma bilateral com perda visual acentuada. Trata-se então de um caso de síndrome de Sturge-Weber tipo I (angiomas da face e das leptomeninges e glaucoma segundo a The Roach Scale, que por falta de seguimento médico apresentava as diversas complicações da síndrome não controladas, convulsões frequentes, perda visual acentuada, história de episódios semelhantes a AVC com hemiparésia sequelar, cefaleias, défice cognitivo e isolamento social. Apesar da forma de apresentação grave com sintomas desde a infância o diagnóstico foi estabelecido numa idade muito pouco comum. A síndrome de Sturge-Weber é uma entidade a ter presente no diagnóstico diferencial das manchas vinho do porto e das crises convulsivas. O diagnóstico precoce e o seguimento/vigilância médica apertada são as únicas formas de melhorar o prognóstico sombrio das manifestações e complicações desta síndrome que são verdadeiramente limitadoras de autonomia no quotidiano.

  8. Nueve casos del sindrome HELLP (hemolisis, enzimas hepaticas Elevadas y plaquetopenia

    Directory of Open Access Journals (Sweden)

    M. F. Capellino

    2003-10-01

    Full Text Available El síndrome HELLP (hemólisis, enzimas hepáticas elevadas y plaquetopenia descripto por Weinstein en 1982, se asocia a alta morbi-mortalidad materna y perinatal. Se evaluaron retrospectivamente las pacientes que presentaron síndrome HELLP entre marzo 1998 y marzo 2001 en el Hospital Privado de Córdoba. Se identificaron nueve pacientes con Síndrome HELLP (incidencia 2.3‰. La edad media de las pacientes fue 24.5 años (15-36 con una edad gestacional media de 34.5 semanas (29-40. Cinco pacientes fueron nulíparas. El síntoma principal fue epigastralgia (77.7%. El parto fue por cesárea en siete pacientes y tres tuvieron síndrome HELLP post-parto. Tres pacientes presentaron hipertensión de difícil manejo, una eclampsia y otra coagulación intravascular diseminada, insuficiencia renal aguda y muerte. Tres requirieron transfusión de derivados sanguíneos y el promedio de internación fue 4.4 días. Seis (75% neonatos fueron pretérmino. El peso medio de nacimiento fue 2030 gramos (736-3200. Cuatro recién nacidos tuvieron un score de Apgar menor de 7 al minuto y todos mayor de 7 a los cinco minutos. Tres neonatos presentaron trastornos alimentarios, uno hipoglucemia y otro enfermedad de membrana hialina, ductus arterioso permeable, sepsis y plaquetopenia. Debido a la morbi-mortalidad materna y perinatal el síndrome HELLP requiere atención en un centro de alta complejidad mediante un equipo multidisciplinario.HELLP syndrome (Hemolysis, Elevated Liver Enzymes and Low Platelets was described by Weinstein in 1982. It has a high maternal and perinatal morbi-mortality rate. We undertook this study to evaluate perinatal outcome in patients with HELLP syndrome. Patients with HELLP syndrome were identified in a retrospective study between March 1998 and March 2001 at the Hospital Privado de Córdoba. Maternal and neonatal variables were analized. Nine patients with HELLP syndrome were identified (incidence 2.3‰. Mean maternal age was 24.5 (15-36 years. Five patients were nuliparous. The mean gestacional age was 34.5 weeks (29-40. The main symptom was epigastric pain (77.7%. In seven women delivery was made by cesarean section. Three patients had postpartum HELLP syndrome. Three patients had difficult control hypertension; one had eclampsia and another one had disseminated intravascular coagulopathy with acute renal failure and died. Three women needed blood products transfusions. The average admission time was 4.4 days. There were six preterm infants (75%. Mean birth weight was 2030 g (736-3200. Four neonates had Apgar score 7 at 5 minutes. Three neonates had alimentary disorders, one had hypoglucemia and another hyaline membrane disease, patent ductus arteriosus, sepsis and thrombocytopenia. The high maternal and perinatal morbi-mortality of HELLP syndrome requires management in a centre where intensive maternal and neonatal care are available.

  9. Giperkortitsizm i metabolicheskiy sindrom: slozhnosti differentsial'noy diagnostiki i lecheniya

    Directory of Open Access Journals (Sweden)

    2012-06-01

    Full Text Available Hypercortisolism is a severe endocrine disorder that leads to all types of metabolic disturbances. The most frequent symptom of hypercortisolism is a specific weight gain and body fat distribution - "cushingoid" obesity which clinically reflects the pathological changes in protein, carbohydrate and lipids metabolism. We provide a clinical case of a patient with Cushing's disease. This clinical case represents challenges in the differential diagnosis of this rare endocrine disorder and metabolic syndrome, and specific approach in further evaluation and treatment of Cushing's disease that requires all the latest technology in this field to be employed.

  10. Estados de mal epiléptico na sindrome Delennox-Gastaut: aspectos terapeuticos

    Directory of Open Access Journals (Sweden)

    José Geraldo Speciali

    1977-09-01

    Full Text Available Foram descritas as condutas terapêuticas utilizadas nos estados de mal epiléptico, convulsivos e não convulsivos, observados em 14 pacientes com síndrome de Lennox-Gastaut. Verificou-se relação temporal entre aparecimento de estado de mal epiléptico e início de tratamento com clonazepam e difenilhidantoina; a retirada dessas medicações foi seguida pelo desaparecimento dos estados de mal. Indicou-se a possibilidade de tratamento dos estados de mal epiléptico modificando-se o esquema terapêutico administrado por via oral, reservando-se o tratamento parenteral para os estados com comprometimento progressivo da consciência e/ou dos distúrbios neurovegetativos.

  11. A sindrome da tensão pre-menstrual : uma abordagem psicanalitica

    OpenAIRE

    Vera Aparecida de Carvalho Zoldan

    2001-01-01

    Resumo: O interesse por esta pesquisa orienta-se sobre as questões surgidas na clinica psicanalítica a partir do atendimento de pacientes vítimas da Síndrome da Tensão Pré-Menstrual (STPM) e suas manifestações sintomáticas, não somente físicas, mas predominantemente psíquicas. Embora seja considerada pela Medicina como uma doença resultante das próprias alterações orgânicas e hormonais associadas ao ciclo reprodutor feminino, a análise psicanalítica revela a existência de relações particularm...

  12. Sindrome confusional agudo por abstinencia aguda de nicotina Delirium due to acute nicotine withdrawal

    Directory of Open Access Journals (Sweden)

    Manuel Klein

    2002-08-01

    Full Text Available El síndrome confusional agudo (SCA o delirium en pacientes hospitalizados es un problema frecuente y grave. Se caracteriza por síntomas de comienzo agudo y curso fluctuante con inatención, pensamiento desorganizado, y con distintos niveles de alteración de la conciencia.En la bibliografía consultada, el SCA como manifestación de un síndrome de abstinencia aguda nicotínica fue descripto en solo ocho casos. Presentamos el caso de un tabaquista grave que, internado por una reagudización de su enfermedad pulmonar obstructiva crónica (EPOC, presentó un cuadro de SCA al tercer día de abstinencia tabacal, cediendo los síntomas tras la administración de un parche de nicotina. Lo descripto sugiere que en pacientes internados que presentan SCA y agitación, con fuertes antecedentes de tabaquismo, un simple ensayo con un parche de nicotina puede ofrecer en pocas horas una notable respuesta terapéutica y a su vez un test confirmatorio. El reconocimiento del SCA como forma de presentación de la abstinencia nicotínica permitirá identificar casos habitualmente complejos en los que se podrá implementar una sencilla y eficaz alternativa terapéutica.Delirium or acute confusional state among hospitalized patients is a frequent and serious problem. It is characterized by acute onset symptoms, fluctuating course, impaired attention, unorganized thinking, and altered level of conciousness. Delirium, as a manifestation of acute nicotine withdrawal syndrome has been reported in the reviewed literature only in eight cases. We report the case of a heavy smoker admitted because of a reagudization of his chronic obstructive pulmonary disease. At the third day of nicotine abstinence, he developed delirium with a rapid improvement of his symptoms after treatment with a transdermal nicotine patch. This description suggests that in hospitalized heavy smokers who develop delirium with agitation, a simple trial with a nicotine patch can offer a dramatic therapeutic response in a few hours, constituing additionally a confirmatory test. The recognition of delirium as a manifestation of nicotine withdrawal could allow to determine the origin of symptoms and to apply the appropriate therapy, in certain complex cases that now remain undiagnosed.

  13. Asupan zink dan magnesium makanan dengan disfungsi ereksi pada penderita sindrom metabolik

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    Saraheni Saraheni

    2014-01-01

    Full Text Available Background: Metabolic syndrome (MetS is a disease of disorder of lipid and nonlipid metabolism. The West of Scotland Coronary Prevention Study found that men with MetS had probability 3.7 dysfunctions of erection (ED by using International Index of Erectile Function (IIEF. Patient with heart disease had the risk 2 times to get ED, hypertension was 1.5-2 times, DM was 3-4 times, depression was 2-3.5 times, testosterone deficiency syndrome (TDS was 1.5-2 times, and high cholesterol was 4 times. The nutrient deficiency of zinc (Zn and magnesium (Mg was suspected being the main component which had a role in resisting a sexuality growth and maturation process. Objective: Knowing the correlation of Zn and Mg feeding with erection dysfunction in MetS person. Method: This study was observational analytic study, with case-control design in the patient aged 30-60 years old. The respondent in this study was people with MetS according to WHO criterion. There was 82 patient divided into two groups, consist of 41 cases of MetS and ED, 41 cases with the normal patient. The data collected by interview, laboratory assessment and anthropometric measurement. The data analysis using univariate, bivariate and multivariate analysis using multiple logistic regression. Results: There was significant correlation between Zn feeding and ED (OR=7.15; 95% Cl=1.47-34.71; p=0.007 and there was significant correlation between Mg feeding with ED (OR=3.34; 95% Cl=1.07-10.4; p=0.033. The end result of the multivariate analysis showed the risk variable to the ED event, that was Zn feeding with OR=15.41. If the intake of Zn accompanied with risk factors associated as a cause of ED, multivariate analysis showed HbA1c’s degree with OR=12.57; triglyceride (OR=10.47; blood pressure (OR=5.82; and abdominal obesity (OR=6.94. The result shows that these risk factors can aggravate or anticipate the onset of dysfunction erection beside low Zn intake. Conclusion: There was statistically significant correlation between Zn and Mg feeding with erection dysfunction in MetS patient.

  14. SINDROME PARANEOPLASICO EN CANCER DE CABEZA Y CUELLO: REPORTE DE UN CASO

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    Danilo Terán Muñoz

    2018-05-01

    Full Text Available Introducción y objetivo:Presentamos el caso de una paciente que presentó un síndrome paraneoplásico como primera manifestación de un carcinoma epidermoide Materiales y Métodos:Varón de 57 años de edad, que  es ingresado en el servicio de neumología por presentar disnea de larga evolución junto a derrame pleural bilateral y artritis en rodillas, carpos y metacarpos de reciente aparición.  Durante su hospitalización presenta eritema y descamación en manos, pabellones auriculares, rodillas y muslos; se objetivó también un mínimo derrame pericárdico.  La analítica de autoinmunidad revelo anticuerpos antinucleares positivos y  Anti Ro positivo, siendo el resto de pruebas normales.  Las lesiones cutáneas son diagnosticadas como queratosis paraneoplásica de Basex.  La exploración física del paciente reveló la presencia de una masa cervical derecha dura y adherida, no objetivándose lesiones faringolaríngeas ni en otras localizaciones.  Se realiza una punción con aguja gruesa de la masa cervical, siendo el resultado del análisis anatomopatológico carcinoma epidermoide.  La lesión es catalogada como metástasis cervical de orígen desconocido. Discusión:Las manifestaciones clínicas sistémicas por los metabolitos de los tumores son denominadas síndromes paraneoplásicos.  Las diferentes metabolitos producidos pueden provocar un amplio abanico de síntomas, generalmente mediados por la acción toxica de las sustancias liberadas por el tumor.  Suelen afectar varios órganos y sistemas: endocrinos, dermatológicos, oculares y osteoarticulares.  Los síndromes paraneoplásicos ocurren en el 1 a 7,4% de todos los pacientes con cáncer, siendo la presentación en las neoplasias de cabeza y cuello infrecuente.  El carcinoma epidermoide es la variante asociada con más frecuencia a este tipo de síndromes, también presentándose con frecuencia en tumores neuroendocrinos,  siendo menor la incidencia en otro tipo de tumores como el adenocarcinoma, carcinoma adenoide quístico, linfomas y sarcomas.  La acroqueratosis paraneoplásica de Basex, fue descrita por primera vez en 1965, siendo asociada a carcinoma del seno piriforme.  Clínicamente se caracteriza por placas cutáneas descamativas eritematosas con predilección en extremidades y es el síndrome paraneoplásico que se presenta más frecuentemente en los tumores de laringe e hipofaringe. Conclusión:Los facultativos que tratan pacientes oncológicos deben ser capaces de diferenciar los síndromes paraneoplásicos de otros desórdenes benignos; estos síndromes pueden dominar el cuadro clínico del paciente llevando a una demora diagnóstica puesto que esta sintomatología eclipsa la patología oncológica de base.  El conocimiento de los síndromes paraneoplásicos es importante porque permite orientar el caso correctamente, para de esta manera realizar un diagnóstico precoz y un tratamiento orientado a la patología  del paciente.

  15. Radiological pulmonary manifestations of acquired immunodeficiency syndrome; Manifestacoes radiologicas pulmonares da sindrome da imunodeficiencia adquirida

    Energy Technology Data Exchange (ETDEWEB)

    Marchiori, Edson; Melo, Alessandro Severo Alves de; Ossa, Alfonso Jaramillo [Universidade Federal Fluminense, Niteroi, RJ (Brazil). Dept. de Radiologia

    1999-06-01

    In this article are reviewed the principal radiologic manifestations of inflammatory and tumoral diseases the compromise the lungs of patients with acquired immunodeficiency syndrome. In the group of inflammatory diseases the radiologic aspects of pneumocystosis, cytomegalovirus disease, cryptococcosis, tuberculosis and bacterial pneumonias are emphasized. In the neoplasic diseases' group the aspects of lymphoma and Kaposi's sarcoma are specially presented. (author)

  16. CHILD ABUSE IN A MEDICAL SETTING: CASE ILLUSTRATIONS OF TWO VARIANTS OF MUNCHAUSEN SINDROME BY PROXY.

    Directory of Open Access Journals (Sweden)

    Antonietta Lanzarone

    2017-04-01

    Full Text Available Munchausen syndrome is a complex type of abuse, which is often underdiagnosed or misdiagnosed in clinical practice, and has harmful consequences for children. Its relationship with child abuse, of which it is a variety, must be recognized in clinical and forensic practice. The authors report herein two observed cases of different types of Münchausen syndrome by proxy (MSbP. The first, is the most severe form of MSbP, with induced, true illness and related pathological symptoms into victim. The second case is a moderate form, much more complex to detect, in which a perpetrator parent simulates and aggravates the child‘s illness. Adequate training of health professionals and investigators is essential in revealing cases of MSbP. Diagnosis must be based on the study of the different forms of "abuse" and the knowledge of clinical protocols used to validate any suspected behaviour which could be potentially harmful to the child. Moreover, a lack of training may lead to misleading interpretations of medical history interpretation and fallacious conclusions. Our study aims to review the features that are to be considered in a suspected case of MSbP, in accordance with a recently updated consensus statement by the Committee on Child Abuse and Neglect from the American Academy of Pediatrics.

  17. Penatalaksanaan Oligodontia pada Anak 14 Tahun dengan Sindrom Ectodermal Dysplasia: Laporan Kasus

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    Anie Apriani

    2015-12-01

    Full Text Available Ectodermal dysplasia is a hereditary disorder that is rarely seen with approximately 7000 cases in the world. In this disorder, Ectodermal dysplasia occurs as a developmental disorder of organ structures derived from the ectodermal layer such as hair, teeth, nails, and sweat glands. This is a case report of ectodermal dysplasia in a 14-year-old girl with clinical manifestations of oligodontia (tooth loss, more than 6 teeth on the upper and lower jaw, thin and curly hair, abnormal toenail shape, and impaired excretion of sweat. The purpose of the treatment was to make the patient regains her esthetic and masticatory functions, which were disrupted by the absence of permanent tooth buds, as well as to maintain the normal growth of the developing jaws. Treatment for the patient’s with oligodontia included the use of removable denture in lower jaw and application of acrylic crowns on all upper and lower anterior teeth resulting in improved esthetics and masticatory function. It is concluded that the treatment has been able to improve the esthetics and to return the masticatory function of the patient while maintaining the normal growth of the jaws.

  18. Sindrome de Landau Kleffner aspectos clinicos, eletrencefalograficos e psicossociais : estudo de seguimento a longo prazo

    OpenAIRE

    Marcos Henrique Coelho Duran

    2008-01-01

    Resumo: Objetivos: A Síndrome de Landau-Kleffner (SLK) é uma entidade rara, caracterizada por epilepsia e afasia. Ocorre em crianças com aquisição normal da linguagem, geralmente, entre 3 e 7 anos de idade. A evolução a longo prazo é controversa e pouco estudada. O presente estudo tem como objetivo verificar a evolução em uma série de sujeitos com diagnóstico de SLK, enfocando os aspectos clínicos, eletrencefalográficos, psicossociais e da qualidade de vida. Métodos: Trata-se de um estudo tra...

  19. HUBUNGAN MASA KERJA DAN SIKAP KERJA DENGAN KEJADIAN SINDROM KARPAL PADA PEMBATIK CV. PUSAKA BERUANG LASEM

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    Cris Purwandari Mulyawati Agustin

    2014-10-01

    Full Text Available Pembatik merupakan pekerja sektor informal, dimana pada saat membatik melakukan gerakan berulang, gerakan tangan dengan kekuatan, posisi fleksi dan ekstensi, sehingga menyebabkan stress pada jaringan disekitar terowongan karpal. Tujuan penelitian ini untuk mengetahui hubungan masa kerja dan sikap kerja dengan kejadian STK pada pembatik CV. Pusaka Beruang.Penelitian ini menggunakan pendekatan cross sectional. Populasi dalam penelitian berjumlah 68 orang. Sampel penelitian berjumlah 22 responden. Instrument penelitian berupa kuesioner dan pengukuran tes phalen. Data dianalisis dengan uji Chi-square.Hasil penelitian menunjukkan bahwa ada hubungan masa kerja p=0,029 dan sikap kerja p=0,031 dengan kejadian STK. Masa kerja > 4 tahun dan level sikap kerja yang tinggi mempunyai risiko STK karena terjadi stress disekitar jaringan terowongan karpal.Simpulan pada penelitian ini ada hubungan antara masa kerja dan sikap kerja dengan kejadian STK. Saran untuk pekerja diharapkan dapat melakukan istirahat secara teratur setiap 15-20 menit untuk mengurangi risiko STK. Batik is an informal sector workers describe or designed batik with the traditional way of working. Which time both do repetitive motion, hand movements with strength, position, position the extension and flexion, hand static, thus causing stress on the network around the carpal tunnel. The purpose of this research is to know the relation tenure and working attitude with STK batik meker in CV. Pusaka Beruang. This research uses the approach of cross sectional. The population in this research is totalling 68 peoples. Sample research amounted to 22 respondents. Research Instrument in the form of questionnaires and measurement test phalen. Data were analyzed by Chi square test. The results showed that there was a relationship tenure p = 0.029 and working attitude p = 0.031 with STK events. Tenure > 4 years and a high level of work attitudes have STK risk due to stress around the carpal tunnel syndrome network.The conclusions in this study no relationship tenure and work attitude with STK. Advice for workers expected to perform regular breaks every 15-20 minutes to reduce the risk of STK.

  20. Upaya Peningkatan Tingkat Pengetahuan Siswi MAN 2 Palembang Mengenai Sindrom Pra Menstruasi

    Directory of Open Access Journals (Sweden)

    Muhammad Aditya Alfarizki

    2017-03-01

    Full Text Available Premenstrual syndrome characterized by affective, physical, and behavior symptoms with moderate to severe grade, that usually recurrent every luteal phase of menstrual cycle and disappear within menstruation. The frequency of premenstrual syndrome is still high, in Indonesia and all over the world. To overcome this situation, there should be a health promotion. The aim of this community service was to increase the girl’s knowledge of premenstrual syndrome. This community service was held in one day on November 2016 in public islamic high school MAN 2 Palembang. The schedule was start with pre test consist of 15 questions, counseling sesssion using power point media, discussion session, and post test consist of the same questions to measure the knowledge after counseling. Pre test score showed that 13.9% students had good knowledge and post test score showed an increase of good knowledge (66.7%. Conclusion, heatlh education through counseling method bring a change of knowledge.

  1. EFECTOS DE LA METFORMINA EN EL SINDROME DE OVARIO POLIQUISTICO ASOCIADO A INSULINO RESISTENCIA

    OpenAIRE

    Caro,Claudio; Fuhrer,Juan; Sáez,Rodrigo; Rubio,Víctor; Moreno,Luis; Cumsille,Miguel

    2002-01-01

    Se presenta la experiencia clínica del uso de metformina (1,7 g día), por 4 meses, en 11 pacientes con (SOP) asociado a resistencia insulínica. Se determinaron los efectos clínicos, bioquímicos y hormonales luego de 4 meses de terapia. Cinco de las pacientes que deseaban embarazo, continuaron recibiendo la droga, hasta por un año. Se evaluó durante el tratamiento los síntomas clínicos, historia menstrual, hirsutismo; y los niveles séricos de gonadotrofinas, andrógenos, globulina ligante sexua...

  2. Il cinema di Pasolini e la morte: tra complesso della mummia e sindrome di Frankenstein

    Directory of Open Access Journals (Sweden)

    Tomaso Subini

    2010-10-01

    Full Text Available Cinema's ability to defeat death by stopping the run of time is written inside its own statute. Confiding on this capacity, Pasolini devotes his filmic work to the theme of death (interrogated through Christ's myth and elaborates a linguistic theory (strictly linked to the performative aspects of his artistic work to give an explanation of death through a filmic metaphor.

  3. Higher-order techniques in computational electromagnetics

    CERN Document Server

    Graglia, Roberto D

    2016-01-01

    Higher-Order Techniques in Computational Electromagnetics explains 'high-order' techniques that can significantly improve the accuracy, computational cost, and reliability of computational techniques for high-frequency electromagnetics, such as antennas, microwave devices and radar scattering applications.

  4. Ion beam techniques in arts and archaeology

    International Nuclear Information System (INIS)

    Qin Guangyong; Pan Xianjia; Sun Zhongtian; Gao Zhengyao

    1991-01-01

    The ion beam techniques used in studies of arts and archaeology are compared with other analytical techniques. Some examples are specially selected to illustrate the achievements and trends of the techniques in this field

  5. The hologram principles and techniques

    CERN Document Server

    Richardson, Martin J

    2018-01-01

    Written by Martin Richardson (an acclaimed leader and pioneer in the field) and John Wiltshire, The Hologram: Principles and Techniques is an important book that explores the various types of hologram in their multiple forms and explains how to create and apply the technology. The authors offer an insightful overview of the currently available recording materials, chemical formulas, and laser technology that includes the history of phase imaging and laser science. Accessible and comprehensive, the text contains a step-by-step guide to the production of holograms. In addition, The Hologram outlines the most common problems encountered in producing satisfactory images in the laboratory, as well as dealing with the wide range of optical and chemical techniques used in commercial holography. The Hologram is a well-designed instructive tool, involving three distinct disciplines: physics, chemistry, and graphic arts. This vital resource offers a guide to the development and understanding of the recording of mater...

  6. Bases of technique of sprinting

    Directory of Open Access Journals (Sweden)

    Valeriy Druz

    2015-06-01

    Full Text Available Purpose: to determine the biomechanical consistent patterns of a movement of a body providing the highest speed of sprinting. Material and Methods: the analysis of scientific and methodical literature on the considered problem, the anthropometrical characteristics of the surveyed contingent of sportsmen, the analysis of high-speed shootings of the leading runners of the world. Results: the biomechanical bases of technique of sprinting make dispersal and movement of the general center of body weight of the sportsman on a parabolic curve in a start phase taking into account the initial height of its stay in a pose of a low start. Its further movement happens on a cycloidal trajectory which is formed due to a pendulum movement of the extremities creating the lifting power which provides flight duration more in a running step, than duration of a basic phase. Conclusions: the received biomechanical regularities of technique of sprinting allow increasing the efficiency of training of sportsmen in sprinting.

  7. CT colonography: Techniques, indications, findings

    International Nuclear Information System (INIS)

    Mang, Thomas; Graser, Anno; Schima, Wolfgang; Maier, Andrea

    2007-01-01

    Computed tomographic colonography (CTC) is a minimally invasive technique for imaging the entire colon. Based on a helical thin-section CT of the cleansed and air-distended colon, two-dimensional and three-dimensional projections are used for image interpretation. Several clinical improvements in patient preparation, technical advances in CT, and new developments in evaluation software have allowed CTC to develop into a powerful diagnostic tool. It is already well established as a reliable diagnostic tool in symptomatic patients. Many experts currently consider CTC a comparable alternative to conventional colonoscopy, although there is still debate about its sensitivity for the detection of colonic polyps in a screening population. This article summarizes the main indications, the current techniques in patient preparation, data acquisition and data analysis as well as imaging features for common benign and malignant colorectal lesions

  8. Tracer techniques in food industry

    International Nuclear Information System (INIS)

    Pertsovskij, E.S.; Sakharov, Eh.V.; Dolinin, V.A.

    1980-01-01

    The appicability of radioactive tracer techniques to process control in food industry are considered. Investigations in the field of food industry carried out using the above method are classified. The 1 class included investigations with preliminary preparation of a radioactive indicator and its following introduction in the system studied. The 2 class includes investigations based on the introduction in the system studied of a non-active indicator which is activated in a neutron flux being in samples selected in or after the process investigated. The 3 class includes studies based on investigations of natural radioactivity of certain nuclides in food stuff. The application of tracer techniques to the above classes of investigations in various fields of food industry and the equipment applied are considered in detail [ru

  9. Progress in thin film techniques

    International Nuclear Information System (INIS)

    Weingarten, W.

    1996-01-01

    Progress since the last Workshop is reported on superconducting accelerating RF cavities coated with thin films. The materials investigated are Nb, Nb 3 Sn, NbN and NbTiN, the techniques applied are diffusion from the vapour phase (Nb 3 Sn, NbN), the bronze process (Nb 3 Sn), and sputter deposition on a copper substrate (Nb, NbTiN). Specially designed cavities for sample evaluation by RF methods have been developed (triaxial cavity). New experimental techniques to assess the RF amplitude dependence of the surface resistance are presented (with emphasis on niobium films sputter deposited on copper). Evidence is increasing that they are caused by magnetic flux penetration into the surface layer. (R.P.)

  10. Nuclear techniques in food production

    International Nuclear Information System (INIS)

    Merlin, J.P.C.

    1975-01-01

    This study is divided into three parts. The first, devoted to the use of radiations in food production, deals especially with artificial mutagenesis, selectors taking advantage of altered hereditary features in plants from irradiated seed; sterilization of animals to eliminate harmful insects (male sterilization technique); the lethal power of radiations used for the production of animal vaccins, attenuated by irradiation, against organisms which infest or degrade food products. Part two shows that radioactive atoms used as tracers to reveal migrations and chemical transformations of products such as fertilizers and pesticides can speed up all kinds of agronomical research. Their possibilities in research on animal feeding and to detect poisonous substances in foodstuffs are also mentioned. The last part is devoted to the use of nuclear techniques in irrigation and more precisely in the study of underground water flows soil moisture and lastly the future of nuclear desalination [fr

  11. Metabolomics techniques for nanotoxicity investigations.

    Science.gov (United States)

    Lv, Mengying; Huang, Wanqiu; Chen, Zhipeng; Jiang, Hulin; Chen, Jiaqing; Tian, Yuan; Zhang, Zunjian; Xu, Fengguo

    2015-01-01

    Nanomaterials are commonly defined as engineered structures with at least one dimension of 100 nm or less. Investigations of their potential toxicological impact on biological systems and the environment have yet to catch up with the rapid development of nanotechnology and extensive production of nanoparticles. High-throughput methods are necessary to assess the potential toxicity of nanoparticles. The omics techniques are well suited to evaluate toxicity in both in vitro and in vivo systems. Besides genomic, transcriptomic and proteomic profiling, metabolomics holds great promises for globally evaluating and understanding the molecular mechanism of nanoparticle-organism interaction. This manuscript presents a general overview of metabolomics techniques, summarizes its early application in nanotoxicology and finally discusses opportunities and challenges faced in nanotoxicology.

  12. Nuclear analytical techniques in medicine

    International Nuclear Information System (INIS)

    Cesareo, R.

    1988-01-01

    This book acquaints one with the fundamental principles and the instrumentation relevant to analytical technique based on atomic and nuclear physics, as well as present and future biomedical applications. Besides providing a theoretical description of the physical phenomena, a large part of the book is devoted to applications in the medical and biological field, particularly in hematology, forensic medicine and environmental science. This volume reviews methods such as the possibility of carrying out rapid multi-element analysis of trace elements on biomedical samples, in vitro and in vivo, by XRF-analysis; the ability of the PIXE-microprobe to analyze in detail and to map trace elements in fragments of biomedical samples or inside the cells; the potentiality of in vivo nuclear activation analysis for diagnostic purposes. Finally, techniques are described such as radiation scattering (elastic and inelastic scattering) and attenuation measurements which will undoubtedly see great development in the immediate future

  13. Non destructive assay (NDA) techniques

    International Nuclear Information System (INIS)

    Mafra Guidicini, Olga; Llacer, Carlos D.; Rojo, Marcelo

    2001-01-01

    In the IAEA Safeguards System the basic verification method used is nuclear material accountancy, with containment and surveillance as important complementary measures. If nuclear material accountancy is to be effective, IAEA inspectors have to make independent measurements to verify declared material quantities. Most of the equipment available to the inspectors is designed to measure gamma rays and/or neutrons emitted by various nuclear materials. Equipment is also available to measure the gross weight of an item containing nuclear material. These types of measurement techniques are generally grouped under the title of nondestructive assay (NDA). The paper describes the NDA techniques and instruments used to verify the total amount of nuclear material held at a nuclear facility. (author)

  14. Data mining concepts and techniques

    CERN Document Server

    Han, Jiawei

    2005-01-01

    Our ability to generate and collect data has been increasing rapidly. Not only are all of our business, scientific, and government transactions now computerized, but the widespread use of digital cameras, publication tools, and bar codes also generate data. On the collection side, scanned text and image platforms, satellite remote sensing systems, and the World Wide Web have flooded us with a tremendous amount of data. This explosive growth has generated an even more urgent need for new techniques and automated tools that can help us transform this data into useful information and knowledge.Like the first edition, voted the most popular data mining book by KD Nuggets readers, this book explores concepts and techniques for the discovery of patterns hidden in large data sets, focusing on issues relating to their feasibility, usefulness, effectiveness, and scalability. However, since the publication of the first edition, great progress has been made in the development of new data mining methods, systems, and app...

  15. Bulk analysis using nuclear techniques

    International Nuclear Information System (INIS)

    Borsaru, M.; Holmes, R.J.; Mathew, P.J.

    1983-01-01

    Bulk analysis techniques developed for the mining industry are reviewed. Using penetrating neutron and #betta#-radiations, measurements are obtained directly from a large volume of sample (3-30 kg) #betta#-techniques were used to determine the grade of iron ore and to detect shale on conveyor belts. Thermal neutron irradiation was developed for the simultaneous determination of iron and aluminium in iron ore on a conveyor belt. Thermal-neutron activation analysis includes the determination of alumina in bauxite, and manganese and alumina in manganese ore. Fast neutron activation analysis is used to determine silicon in iron ores, and alumina and silica in bauxite. Fast and thermal neutron activation has been used to determine the soil in shredded sugar cane. (U.K.)

  16. Translumbar aortography by catheter technique

    International Nuclear Information System (INIS)

    Hagen, B.; Honemeyer, U.; Meier-Duis, H.

    1982-01-01

    400 examinations performed during the last three years by TLA (only catheter technique) were subjected to critical analysis and studied particularly in respect to the rate of complications. We observed 13 complications (3.25%) of moderate severity, including 3 large hematomas (documented by CT), 3 paravasations and 7 dissections, but no fatal complication. Two (0.5%) of these complications had clinical evidence. The advantages of the catheter technique of TLA are described. Injections through rigid metal cannula should be avoided because of the high incidence of complications (mainly the increased risk of dissection). Downstream injection resulted in excellent visualization of peripheral occluding vascular disease. Upstream injection should be preferred to demonstrate the major abdominal arteries as well as supraceliac collateral circulation in the case of high Leriche syndrome. The low or intermediate puncture of the aorta is preferable to facilitate caudad direction of the catheter and to diminish the risk of damaging other vessels or puncturing an organ. (orig.) [de

  17. Nanorobotics current approaches and techniques

    CERN Document Server

    Ferreira, Antoine

    2013-01-01

    Nanorobot devices now perform a wide variety of tasks at the nanoscale in a wide variety of fields including but not limited to fields such as manufacturing, medicine, supply chain, biology, and outer space. Nanorobotics: Current Approaches and Techniques is a comprehensive overview of this interdisciplinary field with a wide ranging discussion that includes nano-manipulation and industrial nanorobotics, nanorobotics in biology and medicine, nanorobotic sensing, navigation and swarm behavior, and protein and DNA-based nanorobotics. Also included is the latest on topics such as bio-nano-actuators and propulsion and navigation of nanorobotic systems using magnetic fields. Nanorobotics: Current Approaches and Techniques is an ideal book for scientists, researchers, and engineers actively involved in applied and robotic research and development.

  18. Nuclear analytical techniques in medicine

    Energy Technology Data Exchange (ETDEWEB)

    Cesareo, R.

    1988-01-01

    This book acquaints one with the fundamental principles and the instrumentation relevant to analytical technique based on atomic and nuclear physics, as well as present and future biomedical applications. Besides providing a theoretical description of the physical phenomena, a large part of the book is devoted to applications in the medical and biological field, particularly in hematology, forensic medicine and environmental science. This volume reviews methods such as the possibility of carrying out rapid multi-element analysis of trace elements on biomedical samples, in vitro and in vivo, by XRF-analysis; the ability of the PIXE-microprobe to analyze in detail and to map trace elements in fragments of biomedical samples or inside the cells; the potentiality of in vivo nuclear activation analysis for diagnostic purposes. Finally, techniques are described such as radiation scattering (elastic and inelastic scattering) and attenuation measurements which will undoubtedly see great development in the immediate future.

  19. The technique on handling radiation

    International Nuclear Information System (INIS)

    1997-11-01

    This book describes measurement of radiation and handling radiation. The first part deals with measurement of radiation. The contents of this part are characteristic on measurement technique of radiation, radiation detector, measurement of energy spectrum, measurement of radioactivity, measurement for a level of radiation and county's statistics on radiation. The second parts explains handling radiation with treating of sealed radioisotope, treating unsealed source and radiation shield.

  20. NASA/MSFC prediction techniques

    International Nuclear Information System (INIS)

    Smith, R.E.

    1987-01-01

    The NASA/MSFC method of forecasting is more formal than NOAA's. The data are smoothed by the Lagrangian method and linear regression prediction techniques are used. The solar activity period is fixed at 11 years--the mean period of all previous cycles. Interestingly, the present prediction for the time of the next solar minimum is February or March of 1987, which, within the uncertainties of two methods, can be taken to be the same as the NOAA result

  1. Uranium exploration and evaluation techniques

    International Nuclear Information System (INIS)

    Bowie, S.H.U.

    1977-01-01

    Ground, carborne and airborne surveys for uranium commenced with GM-counters and developed to total-count scintillation counters which have subsequently been replaced to some extent by gamma spectrometers. Stabilisation of the last mentioned is important and has only been achieved recently. Hydrogeochemistry has been revitalised by the introduction of neutron activation analysis and has considerable promise of success in the discovery of surface and near-surface uranium deposits. Soil, stream sediment and lake sediment analyses also have potential particularly in follow-up surveys. One of the most encouraging methods of detecting relatively deeply buried uranium ore bodies is by measuring the radon content of air retained in soil or sub-soil; also that dissolved in stream or lake water. Helium, particularly 4 He, which is also a decay product of uranium but which has an infinite half-life could be measured along with radon. Theoretically this could not only give additional information on buried ore bodies, but on the depth of burial. Another possible technique for use in the detection of buried ore bodies is that of measuring the increased heat flow at surface which, in favourable circumstatnces, should be associated with significant uranium occurrences. Measurement of heat flow could either be by surface thermal sensors or by thermal infra-red scanning techniques from aircraft. For the purposes of preliminary surveys of large areas, airborne geochemical techniques offer considerable scope. Possibilities include the measurement of 222 Rn in the atmosphere. Alternatively, one or more of the decay products of radon could be measured. These are 210 Pb, 210 Bi and 210 Po. It is concluded that there is ample evidence to suggest that the more widespread application of known exploration methods, together with new techniques that can already be envisaged, will result in important new discoveries of uranium reserves

  2. Greener Approach To Leather Techniques

    OpenAIRE

    Sah, Narayan

    2013-01-01

    The main purpose of this study was to find out greener and more ecological methods of leather tanning. In this thesis, old traditional methods and new developing methods are compared. New alternatives to chrome tanning agent and their benefits are reported. Additionally, efficient way of chrome tanning in presence of masking agents or other catalysts is reported with cleaning techniques using membrane processes such as micro-filtration, ultra-filtration (UF), nano-filtration (NF) and reverse ...

  3. Techniques for preparing isotopic targets

    International Nuclear Information System (INIS)

    Xu Guoji; Guan Shouren; Luo Xinghua; Sun Shuhua

    1987-12-01

    The techniques of making isotopic targets for nuclear physics experiments are introduced. Vacuum evaporation, electroplating, centrifugal precipitation, rolling and focused heavy-ion beam sputtering used to prepare various isotopic targets at IAE are described. Reduction-distillation with active metals and electrolytic reduction for converting isotope oxides to metals are mentioned. The stripping processes of producing self-supporting isotopic targets are summarized. The store methods of metallic targets are given

  4. Thermal measurements and inverse techniques

    CERN Document Server

    Orlande, Helcio RB; Maillet, Denis; Cotta, Renato M

    2011-01-01

    With its uncommon presentation of instructional material regarding mathematical modeling, measurements, and solution of inverse problems, Thermal Measurements and Inverse Techniques is a one-stop reference for those dealing with various aspects of heat transfer. Progress in mathematical modeling of complex industrial and environmental systems has enabled numerical simulations of most physical phenomena. In addition, recent advances in thermal instrumentation and heat transfer modeling have improved experimental procedures and indirect measurements for heat transfer research of both natural phe

  5. Data mining and visualization techniques

    Science.gov (United States)

    Wong, Pak Chung [Richland, WA; Whitney, Paul [Richland, WA; Thomas, Jim [Richland, WA

    2004-03-23

    Disclosed are association rule identification and visualization methods, systems, and apparatus. An association rule in data mining is an implication of the form X.fwdarw.Y where X is a set of antecedent items and Y is the consequent item. A unique visualization technique that provides multiple antecedent, consequent, confidence, and support information is disclosed to facilitate better presentation of large quantities of complex association rules.

  6. Acoustic techniques in nuclear safeguards

    International Nuclear Information System (INIS)

    Olinger, C.T.; Sinha, D.N.

    1995-01-01

    Acoustic techniques can be employed to address many questions relevant to current nuclear technology needs. These include establishing and monitoring intrinsic tags and seals, locating holdup in areas where conventional radiation-based measurements have limited capability, process monitoring, monitoring containers for corrosion or changes in pressure, and facility design verification. These acoustics applications are in their infancy with respect to safeguards and nuclear material management, but proof-of-principle has been demonstrated in many of the areas listed

  7. New techniques in lamellar keratoplasty.

    Science.gov (United States)

    Alio, Jorge L; Shah, Sunil; Barraquer, Carmen; Bilgihan, Kamil; Anwar, Mohammed; Melles, Gerrit R J

    2002-08-01

    In the past years, several lamellar keratoplasty surgical techniques have been developed, modified or improved in the past years, including microkeratome assisted anterior and posterior lamellar keratoplasty, anterior lamellar keratoplasty using air-dissection or visco-dissection, sutureless posterior lamellar keratoplasty, LASIK for postkeratoplasty astigmatism, and excimer laser assisted keratophakia for keratoconus or to manage complications after LASIK. These procedures may continue to gain interest as alternative procedures for a penetrating keratoplasty in the treatment of various corneal disorders.

  8. Radar techniques using array antennas

    CERN Document Server

    Wirth, Wulf-Dieter

    2013-01-01

    Radar Techniques Using Array Antennas is a thorough introduction to the possibilities of radar technology based on electronic steerable and active array antennas. Topics covered include array signal processing, array calibration, adaptive digital beamforming, adaptive monopulse, superresolution, pulse compression, sequential detection, target detection with long pulse series, space-time adaptive processing (STAP), moving target detection using synthetic aperture radar (SAR), target imaging, energy management and system parameter relations. The discussed methods are confirmed by simulation stud

  9. Artificial Intelligence Techniques and Methodology

    OpenAIRE

    Carbonell, Jaime G.; Sleeman, Derek

    1982-01-01

    Two closely related aspects of artificial intelligence that have received comparatively little attention in the recent literature are research methodology, and the analysis of computational techniques that span multiple application areas. We believe both issues to be increasingly significant as Artificial Intelligence matures into a science and spins off major application efforts. It is imperative to analyze the repertoire of AI methods with respect to past experience, utility in new domains,...

  10. Electromigration techniques theory and practice

    CERN Document Server

    Dziubakiewicz, Ewelina; Szumski, Michal

    2013-01-01

    The book provides the broad knowledge on electromigration techniques including: theory of CE, description of instrumentation, theory and practice in micellar electrokinetic chromatography, isotachophoresis, capillary isoelectric focusing, capillary and planar electrochromatography (including description of instrumentation and packed and monolithic column preparation), 2D-gel electrophoresis (including sample preparation) and lab-on-a-chip systems. The book also provides the most recent examples of applications including food, environmental, pharmaceutical analysis as well as proteomics.

  11. Thyroid ultrasonography: Pitfalls and techniques

    Energy Technology Data Exchange (ETDEWEB)

    Choi, Seon hyeong; Kim, Eun Kyung; Kim, Soo Jin; Kwak, Jin Young [Dept. of Radiology, Research Institute of Radiological Science, Yonsei University College of Medicine, Seoul (Korea, Republic of)

    2014-04-15

    Thyroid ultrasonography (US) plays a key role in the diagnosis and management of thyroid-related diseases. The aim of this article was to illustrate various pitfalls that can occur in utilizing thyroid US and techniques to prevent them. In this article, we present cases demonstrating the common pitfalls associated with US equipment, performance, normal thyroid structures, misinterpretations, and surrounding structures. Knowledge of these areas is essential to avoid misdiagnosis or improper disease management.

  12. Advanced Atmospheric Ensemble Modeling Techniques

    Energy Technology Data Exchange (ETDEWEB)

    Buckley, R. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL); Chiswell, S. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL); Kurzeja, R. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL); Maze, G. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL); Viner, B. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL); Werth, D. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL)

    2017-09-29

    Ensemble modeling (EM), the creation of multiple atmospheric simulations for a given time period, has become an essential tool for characterizing uncertainties in model predictions. We explore two novel ensemble modeling techniques: (1) perturbation of model parameters (Adaptive Programming, AP), and (2) data assimilation (Ensemble Kalman Filter, EnKF). The current research is an extension to work from last year and examines transport on a small spatial scale (<100 km) in complex terrain, for more rigorous testing of the ensemble technique. Two different release cases were studied, a coastal release (SF6) and an inland release (Freon) which consisted of two release times. Observations of tracer concentration and meteorology are used to judge the ensemble results. In addition, adaptive grid techniques have been developed to reduce required computing resources for transport calculations. Using a 20- member ensemble, the standard approach generated downwind transport that was quantitatively good for both releases; however, the EnKF method produced additional improvement for the coastal release where the spatial and temporal differences due to interior valley heating lead to the inland movement of the plume. The AP technique showed improvements for both release cases, with more improvement shown in the inland release. This research demonstrated that transport accuracy can be improved when models are adapted to a particular location/time or when important local data is assimilated into the simulation and enhances SRNL’s capability in atmospheric transport modeling in support of its current customer base and local site missions, as well as our ability to attract new customers within the intelligence community.

  13. A new corrosion monitoring technique

    International Nuclear Information System (INIS)

    Brown, Gerald K.

    2000-01-01

    Internal Corrosion Monitoring has relied upon 5 basic techniques. Little improvement in performance has been achieved in any of these. Many newer internal corrosion monitoring techniques have proved of little value in the field although some have instances of success in the laboratory. Industry has many high value hydrocarbon applications requiring corrosion rate monitoring for real-time problem solving and control. The high value of assets and the cost of asset replacement makes it necessary to practice cost effective process and corrosion control with sensitivity beyond the 5 basic techniques. This new metal loss technology offers this sensitivity. Traditional metal loss technology today provides either high sensitivity with short life, or conversely, long life but with substantially reduced sensitivity. The new metal loss technology offers an improved working life of sensors without significantly compromising performance. The paper discusses the limitations of existing on-line technologies and describes the performance of a new technology. This new metal loss technology was introduced at NACE Corrosion 99'. Since that time several field projects have been completed or are ongoing. This paper will discuss the new metal loss technology and report on some of the data that has been obtained.(author)

  14. Imaging techniques for myocardial inflammation

    International Nuclear Information System (INIS)

    O'Connell, J.B.; Henkin, R.E.; Robinson, J.A.

    1986-01-01

    Dilated cardiomyopathy (DC) represents a heterogeneous group of disorders which results in morbidity and mortality in young individuals. Recent evidence suggests that a subset of these patients have histologic evidence of myocarditis which is potentially treatable with immunosuppression. The identification of myocardial inflammation may therefore lead to development of therapeutic regimens designed to treat the cause rather than the effect of the myocardial disease. Ultimately, this may result in improvement in the abysmal prognosis of DC. The currently accepted technique for identification of active myocardial inflammation is endomyocardial biopsy. This technique is not perfect, however, since pathologic standards for the diagnosis of myocarditis have not been established. Furthermore, focal inflammation may give rise to sampling error. The inflammation-avid radioisotope gallium-67 citrate has been used as an adjunct to biopsy improving the yield of myocarditis from 7 percent to 36 percent. Serial imaging correlates well to biopsy results. Future studies are designed to study the applicability of lymphocyte labelling techniques to myocardial inflammatory disease

  15. Energetic Techniques For Planetary Defense

    Science.gov (United States)

    Barbee, B.; Bambacus, M.; Bruck Syal, M.; Greenaugh, K. C.; Leung, R. Y.; Plesko, C. S.

    2017-12-01

    Near-Earth Objects (NEOs) are asteroids and comets whose heliocentric orbits tend to approach or cross Earth's heliocentric orbit. NEOs of various sizes periodically collide with Earth, and efforts are currently underway to discover, track, and characterize NEOs so that those on Earth-impacting trajectories are discovered far enough in advance that we would have opportunities to deflect or destroy them prior to Earth impact, if warranted. We will describe current efforts by the National Aeronautics and Space Administration (NASA) and the National Nuclear Security Administration (NNSA) to assess options for energetic methods of deflecting or destroying hazardous NEOs. These methods include kinetic impactors, which are spacecraft designed to collide with an NEO and thereby alter the NEO's trajectory, and nuclear engineering devices, which are used to rapidly vaporize a layer of NEO surface material. Depending on the amount of energy imparted, this can result in either deflection of the NEO via alteration of its trajectory, or robust disruption of the NEO and dispersal of the remaining fragments. We have studied the efficacies and limitations of these techniques in simulations, and have combined the techniques with corresponding spacecraft designs and mission designs. From those results we have generalized planetary defense mission design strategies and drawn conclusions that are applicable to a range of plausible scenarios. We will present and summarize our research efforts to date, and describe approaches to carrying out planetary defense missions with energetic NEO deflection or disruption techniques.

  16. The variable finesse locking technique

    International Nuclear Information System (INIS)

    Acernese, F; Al-Shourbagy, M

    2006-01-01

    Virgo is a power recycled Michelson interferometer, with 3 km long Fabry-Perot cavities in the arms. The locking of the interferometer has been obtained with an original lock acquisition technique. The main idea is to lock the instrument away from its working point. Lock is obtained by misaligning the power recycling mirror and detuning the Michelson from the dark fringe. In this way, a good fraction of light escapes through the antisymmetric port and the power build-up inside the recycling cavity is extremely low. The benefit is that all the degrees of freedom are controlled when they are almost decoupled, and the linewidth of the recycling cavity is large. The interferometer is then adiabatically brought on to the dark fringe. This technique is referred to as variable finesse, since the recycling cavity is considered as a variable finesse Fabry-Perot. This technique has been widely tested and allows us to reach the dark fringe in few minutes, in an essentially deterministic way

  17. Comparison of Parameter Identification Techniques

    Directory of Open Access Journals (Sweden)

    Eder Rafael

    2016-01-01

    Full Text Available Model-based control of mechatronic systems requires excellent knowledge about the physical behavior of each component. For several types of components of a system, e.g. mechanical or electrical ones, the dynamic behavior can be described by means of a mathematic model consisting of a set of differential equations, difference equations and/or algebraic constraint equations. The knowledge of a realistic mathematic model and its parameter values is essential to represent the behaviour of a mechatronic system. Frequently it is hard or impossible to obtain all required values of the model parameters from the producer, so an appropriate parameter estimation technique is required to compute missing parameters. A manifold of parameter identification techniques can be found in the literature, but their suitability depends on the mathematic model. Previous work dealt with the automatic assembly of mathematical models of serial and parallel robots with drives and controllers within the dynamic multibody simulation code HOTINT as fully-fledged mechatronic simulation. Several parameters of such robot models were identified successfully by our embedded algorithm. The present work proposes an improved version of the identification algorithm with higher performance. The quality of the identified parameter values and the computation effort are compared with another standard technique.

  18. Nuclear techniques in animal agriculture

    International Nuclear Information System (INIS)

    Young, B.A.

    1981-01-01

    Nuclear technology plays an integral part in research to improve the health and productivity of animals. The use of radioisotopes and ionizing radiations in animal agriculture is briefly reviewed. The radioimmunoassay techniques give the opportunity of measuring and following precisely hormonal patterns in animals over the reproductive cycle. Simply by analysing a sample of blood, milk, or other body fluid, minute hormone concentrations can be assayed and the reproductive status of the animal assessed. The radioimmunoassay procedure uses antigens which are isotopically labelled, usually with 125 I, and antibodies specifically developed for each hormone. The onset of sexual maturity, of oestrus, or the influence of environmental, nutritional or other factors on the reproductive state of an animal can be studied. An example of the use of the radioimmunoassay technique is illustrated in the coordinated research program of the IAEA which focuses on improving domestic buffalo production. Nuclear techniques, particularly the use of stable and radioactive tracers are providing important insights into the functioning of the digestive system of ruminants, its qualitative dynamics and metabolism. For assessing the products of the rumen, particularly volatile fatty acids which become an energy source, and microbial proteins which become a protein source for the animal, materials labelled with 14 C, 3 H, 35 S, 15 N and 32 P are used. As an illustrative example, the results of one study of nitrogen metabolism, microbial protein and rumen bypass protein synthesis in cattle are shown

  19. Enteral Feeding Set Handling Techniques.

    Science.gov (United States)

    Lyman, Beth; Williams, Maria; Sollazzo, Janet; Hayden, Ashley; Hensley, Pam; Dai, Hongying; Roberts, Cristine

    2017-04-01

    Enteral nutrition therapy is common practice in pediatric clinical settings. Often patients will receive a pump-assisted bolus feeding over 30 minutes several times per day using the same enteral feeding set (EFS). This study aims to determine the safest and most efficacious way to handle the EFS between feedings. Three EFS handling techniques were compared through simulation for bacterial growth, nursing time, and supply costs: (1) rinsing the EFS with sterile water after each feeding, (2) refrigerating the EFS between feedings, and (3) using a ready-to-hang (RTH) product maintained at room temperature. Cultures were obtained at baseline, hour 12, and hour 21 of the 24-hour cycle. A time-in-motion analysis was conducted and reported in average number of seconds to complete each procedure. Supply costs were inventoried for 1 month comparing the actual usage to our estimated usage. Of 1080 cultures obtained, the overall bacterial growth rate was 8.7%. The rinse and refrigeration techniques displayed similar bacterial growth (11.4% vs 10.3%, P = .63). The RTH technique displayed the least bacterial growth of any method (4.4%, P = .002). The time analysis in minutes showed the rinse method was the most time-consuming (44.8 ± 2.7) vs refrigeration (35.8 ± 2.6) and RTH (31.08 ± 0.6) ( P refrigerating the EFS between uses is the next most efficacious method for handling the EFS between bolus feeds.

  20. Molecular diagnostic of Philadelphia chromosome in patients affected by mieloid leukemia

    International Nuclear Information System (INIS)

    Campos Rudin, M.E.

    1996-01-01

    The main objective of this study, was to contribute with new elements, to the clinical diagnostic and the monitoring of hematologic diseases, through molecular techniques. Such technique is known as S outhern Blot . Non radioactive and radioactive methods were used, to sift the presence or absence of Ph chromosome. The sound denominated Transprobe-1 and the Endonuclease Bgl II were used. 41 samples proceeding from pacients diagnosed with LLMC and 9 patients grouped with myloproliferatives sindromes or myeloplast sindromes, which were getting treatment at Hospital San Juan de Dios or at Hospital Mexico, were analyzed. The studies detected the presence of rearrangements between Mocr/ABL and (Ph +), and in the remaining; the results were negative Ph . The author found that the application of one single endonuclease is usefull to make a first general sift of the patients; but the application of another endonuclease is required, to confirm the cases that resulted Ph negative. (S. Grainger)

  1. Enseignement technique : Séminaire de l'enseigement technique

    CERN Multimedia

    2004-01-01

    Mardi 4 mai 2004 SEMINAIRE DE L'ENSEIGNEMENT TECHNIQUE de 14:00 à 17:00 - Training Centre Auditorium - bât. 593 Le SPC - Statistical Process Control - dans une démarche de qualité totale Hakim Bourahla, Maurice Arrius, Charbel Tannous - ABW Concept - F-74950 SCIONZIER, France Ce nouveau séminaire de l'Enseignement Technique sera consacré à la présentation du SPC, le Statistical Process Control. Le SPC apporte une grande efficacité dans l'amélioration de la qualité des produits. Cette méthode, permettant d'assurer une qualité optimum à l'aide d'un outil statistique, est fondée sur deux concepts de base : le suivi et le pilotage des procédés industriels par cartes de contrôle, et l'étude des capabilités des systèmes de production. - Origine et objectifs du SPC - Concepts du ...

  2. Enseignement technique : Séminaire de l'enseignement technique

    CERN Multimedia

    2004-01-01

    Mardi 4 mai 2004 SEMINAIRE DE L'ENSEIGNEMENT TECHNIQUE de 14:00 à 17:00 - Training Centre Auditorium - bât. 593 Le SPC - Statistical Process Control - dans une démarche de qualité totale Hakim Bourahla, Maurice Arrius, Charbel Tannous - ABW Concept - F-74950 SCIONZIER, France Ce nouveau séminaire de l'Enseignement Technique sera consacré à la présentation du SPC, le Statistical Process Control. Le SPC apporte une grande efficacité dans l'amélioration de la qualité des produits. Cette méthode, permettant d'assurer une qualité optimum à l'aide d'un outil statistique, est fondée sur deux concepts de base : le suivi et le pilotage des procédés industriels par cartes de contrôle, et l'étude des capabilités des systèmes de production. - Origine et objectifs du SPC - Concepts du ...

  3. Flexible time domain averaging technique

    Science.gov (United States)

    Zhao, Ming; Lin, Jing; Lei, Yaguo; Wang, Xiufeng

    2013-09-01

    Time domain averaging(TDA) is essentially a comb filter, it cannot extract the specified harmonics which may be caused by some faults, such as gear eccentric. Meanwhile, TDA always suffers from period cutting error(PCE) to different extent. Several improved TDA methods have been proposed, however they cannot completely eliminate the waveform reconstruction error caused by PCE. In order to overcome the shortcomings of conventional methods, a flexible time domain averaging(FTDA) technique is established, which adapts to the analyzed signal through adjusting each harmonic of the comb filter. In this technique, the explicit form of FTDA is first constructed by frequency domain sampling. Subsequently, chirp Z-transform(CZT) is employed in the algorithm of FTDA, which can improve the calculating efficiency significantly. Since the signal is reconstructed in the continuous time domain, there is no PCE in the FTDA. To validate the effectiveness of FTDA in the signal de-noising, interpolation and harmonic reconstruction, a simulated multi-components periodic signal that corrupted by noise is processed by FTDA. The simulation results show that the FTDA is capable of recovering the periodic components from the background noise effectively. Moreover, it can improve the signal-to-noise ratio by 7.9 dB compared with conventional ones. Experiments are also carried out on gearbox test rigs with chipped tooth and eccentricity gear, respectively. It is shown that the FTDA can identify the direction and severity of the eccentricity gear, and further enhances the amplitudes of impulses by 35%. The proposed technique not only solves the problem of PCE, but also provides a useful tool for the fault symptom extraction of rotating machinery.

  4. LACIE data-handling techniques

    Science.gov (United States)

    Waits, G. H. (Principal Investigator)

    1979-01-01

    Techniques implemented to facilitate processing of LANDSAT multispectral data between 1975 and 1978 are described. The data that were handled during the large area crop inventory experiment and the storage mechanisms used for the various types of data are defined. The overall data flow, from the placing of the LANDSAT orders through the actual analysis of the data set, is discussed. An overview is provided of the status and tracking system that was developed and of the data base maintenance and operational task. The archiving of the LACIE data is explained.

  5. Techniques for Automated Performance Analysis

    Energy Technology Data Exchange (ETDEWEB)

    Marcus, Ryan C. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2014-09-02

    The performance of a particular HPC code depends on a multitude of variables, including compiler selection, optimization flags, OpenMP pool size, file system load, memory usage, MPI configuration, etc. As a result of this complexity, current predictive models have limited applicability, especially at scale. We present a formulation of scientific codes, nodes, and clusters that reduces complex performance analysis to well-known mathematical techniques. Building accurate predictive models and enhancing our understanding of scientific codes at scale is an important step towards exascale computing.

  6. Radioisotope techniques in oil wells

    International Nuclear Information System (INIS)

    Jain, Prabuddha

    1998-01-01

    Radioisotope techniques are quite useful in oil exploration and exploitation. Nuclear logging offers a way of gathering information on porosity, permeability, fluid saturations, hydrocarbon types and lithology. Some of the interesting applications in well drilling are determining depth of filtrate invasion, detection of lost circulation, drill-bit erosion control; primary cement measurements and well completions such as permanent tubular markers, perforation position marking, detection of channeling behind casing and gravel pack operations. Radioisotopes have been successfully used in optimizing production processes such as production profiling injection profiling, corrosion measurements and well to well tracer tests. (author)

  7. Wavelength conversion techniques and devices

    DEFF Research Database (Denmark)

    Danielsen, Søren Lykke; Mikkelsen, Benny; Hansen, Peter Bukhave

    1997-01-01

    Taking into account the requirements to the converters e.g., bit rate transparency (at least up to 10 Gbit/s), polarisation independence, wavelength independence, moderate input power levels, high signal-to-noise ratio and high extinction ratio interferometric wavelength convertors are very...... interesting for use in WDM optical fibre networks. However, the perfect converter has probably not yet been fabricated and new techniques such as conversion relying on cross-absorption modulation in electro-absorption modulators might also be considered in pursue of effective conversion devices...

  8. Multimedia watermarking techniques and applications

    CERN Document Server

    Kirovski, Darko

    2006-01-01

    Intellectual property owners must continually exploit new ways of reproducing, distributing, and marketing their products. However, the threat of piracy looms as a major problem with digital distribution and storage technologies. Multimedia Watermarking Techniques and Applications covers all current and future trends in the design of modern systems that use watermarking to protect multimedia content. Containing the works of contributing authors who are worldwide experts in the field, this volume is intended for researchers and practitioners, as well as for those who want a broad understanding

  9. Peripheral Atherectomy: Applications and Techniques.

    Science.gov (United States)

    Mittleider, Derek; Russell, Erich

    2016-06-01

    Peripheral atherectomy is a class of procedures that is rapidly increasing in volume. Multiple classes of devices exist, and newer variants are added to the market annually. The devices see wide application for de novo lesions, in-stent restenosis, and adjunctive therapy for drug-coated balloons. The body of evidence supporting atherectomy is less robust than for many other peripheral therapies. The frequency and severity of complications from atherectomy can be significant compared with angioplasty and stenting, and familiarity with preventative and bailout techniques is essential for the interventionalist. Copyright © 2016 Elsevier Inc. All rights reserved.

  10. New extraction technique for alkaloids

    Directory of Open Access Journals (Sweden)

    Djilani Abdelouaheb

    2006-01-01

    Full Text Available A method of extraction of natural products has been developed. Compared with existing methods, the new technique is rapid, more efficient and consumes less solvent. Extraction of alkaloids from natural products such as Hyoscyamus muticus, Datura stramonium and Ruta graveolens consists of the use of a sonicated solution containing a surfactant as extracting agent. The alkaloids are precipitated by Mayer reagent, dissolved in an alkaline solution, and then extracted with chloroform. This article compares the results obtained with other methods showing clearly the advantages of the new method.

  11. Automated medical image segmentation techniques

    Directory of Open Access Journals (Sweden)

    Sharma Neeraj

    2010-01-01

    Full Text Available Accurate segmentation of medical images is a key step in contouring during radiotherapy planning. Computed topography (CT and Magnetic resonance (MR imaging are the most widely used radiographic techniques in diagnosis, clinical studies and treatment planning. This review provides details of automated segmentation methods, specifically discussed in the context of CT and MR images. The motive is to discuss the problems encountered in segmentation of CT and MR images, and the relative merits and limitations of methods currently available for segmentation of medical images.

  12. Measurement Techniques for Clock Jitter

    Science.gov (United States)

    Lansdowne, Chatwin; Schlesinger, Adam

    2012-01-01

    NASA is in the process of modernizing its communications infrastructure to accompany the development of a Crew Exploration Vehicle (CEV) to replace the shuttle. With this effort comes the opportunity to infuse more advanced coded modulation techniques, including low-density parity-check (LDPC) codes that offer greater coding gains than the current capability. However, in order to take full advantage of these codes, the ground segment receiver synchronization loops must be able to operate at a lower signal-to-noise ratio (SNR) than supported by equipment currently in use.

  13. Neutron radiography, techniques and applications

    International Nuclear Information System (INIS)

    Domanus, J.C.

    1987-10-01

    After describing the principles of the ''in pool'' and ''dry'' installations, techniques used in neutron radiography are reviewed. Use of converter foils with silver halide films for the direct and transfer methods is described. Advantages of the use of nitrocellulose film for radiographying radioactive objects are discussed. Dynamic imaging is shortly reviewed. Standardization in the field of neutron radiography (ASTM and Euratom Neutron Radiography Working Group) is described. The paper reviews main fields of use of neutron radiography. Possibilities of use of neutron radiography at research reactors in various scientific, industrial and other fields are mentioned. Examples are given of application of neutron radiography in industry and the nuclear field. (author)

  14. Data acquisition techniques using PC

    CERN Document Server

    Austerlitz, Howard

    1991-01-01

    Data Acquisition Techniques Using Personal Computers contains all the information required by a technical professional (engineer, scientist, technician) to implement a PC-based acquisition system. Including both basic tutorial information as well as some advanced topics, this work is suitable as a reference book for engineers or as a supplemental text for engineering students. It gives the reader enough understanding of the topics to implement a data acquisition system based on commercial products. A reader can alternatively learn how to custom build hardware or write his or her own software.

  15. Measurements techniques for transportation noise

    International Nuclear Information System (INIS)

    Brambilla, G.

    2001-01-01

    The noise from transport systems (roads, railways and aircraft) are increasing more and more both in space and in time and, therefore, they are still the major factor responsible for environmental noise pollution. The population exposed to transport noise is also increasing, and the corresponding health effects on people (i.e. annoyance and sleep disturbance) become more severe. Due to this current situation international and national legislation has been issued and implemented to reduce the harmful effects of such noise. This paper describes the techniques prescribed by recent Italian legislation to measure road, railway and aircraft noise. (author)

  16. Techniques displayed at BNES conference

    International Nuclear Information System (INIS)

    Rippon, S.

    1993-01-01

    This article reviews the progress being made in remote visual examination systems. There is greatly enhanced optics available at present, in conjunction with robot systems which can transport the camera system inside pressure vessels. The technique offers cost savings over regular photographic surveys, and for some reactors has been accepted as a replacement, allowing electronic archiving of video images, and also allowing other inspections to be conducted simultaneously. Advances in other robot and manipulator applications are also described, along with a summary of the range of industrial concerns servicing this market at present

  17. Raman Imaging Techniques and Applications

    CERN Document Server

    2012-01-01

    Raman imaging has long been used to probe the chemical nature of a sample, providing information on molecular orientation, symmetry and structure with sub-micron spatial resolution. Recent technical developments have pushed the limits of micro-Raman microscopy, enabling the acquisition of Raman spectra with unprecedented speed, and opening a pathway to fast chemical imaging for many applications from material science and semiconductors to pharmaceutical drug development and cell biology, and even art and forensic science. The promise of tip-enhanced raman spectroscopy (TERS) and near-field techniques is pushing the envelope even further by breaking the limit of diffraction and enabling nano-Raman microscopy.

  18. Journaling; an active learning technique.

    Science.gov (United States)

    Blake, Tim K

    2005-01-01

    Journaling is a method frequently discussed in nursing literature and educational literature as an active learning technique that is meant to enhance reflective practice. Reflective practice is a means of self-examination that involves looking back over what has happened in practice in an effort to improve, or encourage professional growth. Some of the benefits of reflective practice include discovering meaning, making connections between experiences and the classroom, instilling values of the profession, gaining the perspective of others, reflection on professional roles, and development of critical thinking. A review of theory and research is discussed, as well as suggestions for implementation of journaling into coursework.

  19. A Comparative of business process modelling techniques

    Science.gov (United States)

    Tangkawarow, I. R. H. T.; Waworuntu, J.

    2016-04-01

    In this era, there is a lot of business process modeling techniques. This article is the research about differences of business process modeling techniques. For each technique will explain about the definition and the structure. This paper presents a comparative analysis of some popular business process modelling techniques. The comparative framework is based on 2 criteria: notation and how it works when implemented in Somerleyton Animal Park. Each technique will end with the advantages and disadvantages. The final conclusion will give recommend of business process modeling techniques that easy to use and serve the basis for evaluating further modelling techniques.

  20. Advanced Techniques of Stress Analysis

    Directory of Open Access Journals (Sweden)

    Simion TATARU

    2013-12-01

    Full Text Available This article aims to check the stress analysis technique based on 3D models also making a comparison with the traditional technique which utilizes a model built directly into the stress analysis program. This comparison of the two methods will be made with reference to the rear fuselage of IAR-99 aircraft, structure with a high degree of complexity which allows a meaningful evaluation of both approaches. Three updated databases are envisaged: the database having the idealized model obtained using ANSYS and working directly on documentation, without automatic generation of nodes and elements (with few exceptions, the rear fuselage database (performed at this stage obtained with Pro/ ENGINEER and the one obtained by using ANSYS with the second database. Then, each of the three databases will be used according to arising necessities.The main objective is to develop the parameterized model of the rear fuselage using the computer aided design software Pro/ ENGINEER. A review of research regarding the use of virtual reality with the interactive analysis performed by the finite element method is made to show the state- of- the-art achieved in this field.

  1. Spectrometry techniques for radioactivity measurements

    International Nuclear Information System (INIS)

    Anilkumar, S.

    2016-01-01

    The energy of the radiation emission following the nuclear decay is unique and the characteristic of the radio nuclide which undergoes decay. Thus measurement of the energy of the radiation offers a method of identifying the radio nuclides. The prime requirement of the energy measurement is a suitable detector which shows response proportional to the energy of the radiation rather than the presence of the radiation. The response from such detectors are suitably processed and distributed with respect to the signal strength which is proportional to incident energy. This distribution is normally referred as energy spectrum and is recorded in the multichannel analyser. The measurement of energy and intensity of radiation from the spectrum is called radiation spectrometry. Thus the radiation spectrometry allows the identification and quantification of radioactive isotopes in variety of matrices. The radiation spectrometry has now become a popular radioanalytical technique in wide area of nuclear fuel cycle programs. The popular spectrometry techniques commonly used for the radioactivity measurement and analysis are Alpha spectrometry, Gamma ray spectrometry and Beta spectrometry

  2. Time resolved techniques: An overview

    International Nuclear Information System (INIS)

    Larson, B.C.; Tischler, J.Z.

    1990-06-01

    Synchrotron sources provide exceptional opportunities for carrying out time-resolved x-ray diffraction investigations. The high intensity, high angular resolution, and continuously tunable energy spectrum of synchrotron x-ray beams lend themselves directly to carrying out sophisticated time-resolved x-ray scattering measurements on a wide range of materials and phenomena. When these attributes are coupled with the pulsed time-structure of synchrotron sources, entirely new time-resolved scattering possibilities are opened. Synchrotron beams typically consist of sub-nanosecond pulses of x-rays separated in time by a few tens of nanoseconds to a few hundred nanoseconds so that these beams appear as continuous x-ray sources for investigations of phenomena on time scales ranging from hours down to microseconds. Studies requiring time-resolution ranging from microseconds to fractions of a nanosecond can be carried out in a triggering mode by stimulating the phenomena under investigation in coincidence with the x-ray pulses. Time resolution on the picosecond scale can, in principle, be achieved through the use of streak camera techniques in which the time structure of the individual x-ray pulses are viewed as quasi-continuous sources with ∼100--200 picoseconds duration. Techniques for carrying out time-resolved scattering measurements on time scales varying from picoseconds to kiloseconds at present and proposed synchrotron sources are discussed and examples of time-resolved studies are cited. 17 refs., 8 figs

  3. Baking technique of JT-60

    Energy Technology Data Exchange (ETDEWEB)

    Arai, Takashi; Masaki, Kei; Miyachi, Kengo [Japan Atomic Energy Research Inst., Naka, Ibaraki (Japan). Naka Fusion Research Establishment

    1998-10-01

    It needs to make low ultimate pressure to decrease impurities in a plasma in a nuclear fusion device. Baking technique is very effective method to decrease outgassing rate from first walls and inner surface of the vacuum vessel. However, in such large vacuum vessel, e.g. JT-60, the non-uniform heating and the deformation due to thermal expansion might be very important problems. The baking technique of JT-60 is described. Two baking systems were applied to JT-60 to solve the problem of non-uniform heating. One is a circulation system of the hot nitrogen gas which is located between the inner and outer skins of the double-skin structured vacuum vessel. The other is an electric heater which apply the thick of the vessel. In order to prevent the deformation, the difference of temperature was as small as possible. By both the baking at 300degC and the conditioning such as discharge cleaning, the ultimate pressure was achieved 7.9x10{sup -7} Pa. (author)

  4. Baking technique of JT-60

    International Nuclear Information System (INIS)

    Arai, Takashi; Masaki, Kei; Miyachi, Kengo

    1998-01-01

    It needs to make low ultimate pressure to decrease impurities in a plasma in a nuclear fusion device. Baking technique is very effective method to decrease outgassing rate from first walls and inner surface of the vacuum vessel. However, in such large vacuum vessel, e.g. JT-60, the non-uniform heating and the deformation due to thermal expansion might be very important problems. The baking technique of JT-60 is described. Two baking systems were applied to JT-60 to solve the problem of non-uniform heating. One is a circulation system of the hot nitrogen gas which is located between the inner and outer skins of the double-skin structured vacuum vessel. The other is an electric heater which apply the thick of the vessel. In order to prevent the deformation, the difference of temperature was as small as possible. By both the baking at 300degC and the conditioning such as discharge cleaning, the ultimate pressure was achieved 7.9x10 -7 Pa. (author)

  5. Compensation Techniques in Accelerator Physics

    Energy Technology Data Exchange (ETDEWEB)

    Sayed, Hisham Kamal [Old Dominion Univ., Norfolk, VA (United States)

    2011-05-01

    Accelerator physics is one of the most diverse multidisciplinary fields of physics, wherein the dynamics of particle beams is studied. It takes more than the understanding of basic electromagnetic interactions to be able to predict the beam dynamics, and to be able to develop new techniques to produce, maintain, and deliver high quality beams for different applications. In this work, some basic theory regarding particle beam dynamics in accelerators will be presented. This basic theory, along with applying state of the art techniques in beam dynamics will be used in this dissertation to study and solve accelerator physics problems. Two problems involving compensation are studied in the context of the MEIC (Medium Energy Electron Ion Collider) project at Jefferson Laboratory. Several chromaticity (the energy dependence of the particle tune) compensation methods are evaluated numerically and deployed in a figure eight ring designed for the electrons in the collider. Furthermore, transverse coupling optics have been developed to compensate the coupling introduced by the spin rotators in the MEIC electron ring design.

  6. Carving Technique – Methodical Perspectives

    Directory of Open Access Journals (Sweden)

    Adela BADAU

    2015-09-01

    Full Text Available The alpine skiing has undergone major changes and adjustments due to both technological innovations of materials and update of theoretical and methodological concepts on all levels of specific training. The purpose: the introduction of technological innovation in the field of materials specif ic to carving ski causes a review of methodology, aiming at bringing the execution technique to superior indices in order to obtain positive results. The event took place in Poiana Brasov between December 2014 and March 2015, on an 800m long slope and comp rised a single experimental group made of four males and four females, cadet category, that carried out two lessons per day. The tests targeted the technique level for slalom skiing and giant slalom skiing, having in view four criteria: leg work, basin mov ement, torso position and arms work. As a result of the research and of the statistic - mathematical analysis of the individual values, the giant slalom race registered an average improvement of 3.5 points between the tests, while the slalom race registered 4 points. In conclusion, the use of a specific methodology applied scientifically, which aims to select the most efficient means of action specific to children’s ski, determines technical improvement at an advanced level.

  7. New techniques available for decontamination

    International Nuclear Information System (INIS)

    Costes, J.R.; Cochaux, C.

    1996-01-01

    As nuclear industry dismantling operations become more widespread, one naturally sees the growth of specific needs in decontamination techniques. In this paper, the authors present two applications involving the decategorization of wastes from dismantling. Decategorization means using decontamination to transform the wastes into a lower, and thus cheaper, category. The first application is in decategorizing large mild steel pipes, which come from the stage decommissioning of the G2/G3 graphite gas reactors at Marcoule. A large number of these pipes (4000 t) have been contaminated by deposits and encrustations of 60 Co (95%) and 137 Cs (5%) to the extent of 200 Bq/cm 2 . The objective was to avoid having to store them on surface sites for 300 yr. This is achieved by decontaminating them to a level that enables the metal to be reused. The other application involves stainless steel waste cut into small sections, which comes from the stage decommissioning of a radiometallurgy laboratory (RM2) at Fontenay aux Roses. This waste was not acceptable to the surface storage center due to high levels of alpha contamination. A decategorization technique has been developed for part of the 13 tonnes of waste concerned, which avoids the need for it to be disposed of in extremely costly geologic repositories

  8. Some developments in safeguards techniques

    International Nuclear Information System (INIS)

    Beets, C.

    1977-01-01

    The fundamental principles of safeguards and the research and development of safeguards techniques are described. Safeguard accountancy based upon the partition of the fuel cycle into suitable material balance areas will be further improved. Implementation of international safeguards in the European fuel fabrication and reprocessing facilities is described. The effectiveness of a material accounting system depends on the quality of the quantitative data. The allocation of the tasks in the framework of an integrated safeguards is concerned with R and D work only and has no bearing on the allocation of the implementation costs. Bulk measurements, sampling and destructive or non-destructive analysis of samples are described for the determination of batch data. Testing of the safeguards techniques as a keystone in relation to plant instrumentation programmes are still being developed throughout the world. In addition to accountancy and control, it also includes an effective physical security program. The system of international safeguards that prevailed in the sixties has been re-modelled to comply with the new requirements of the Non-Proliferation Treaty and with the growth of nuclear energy

  9. Remote and unattended monitoring techniques

    International Nuclear Information System (INIS)

    Abedin-Zadeh, R.; Whichello, J.

    1998-01-01

    In the last years, there has been a tremendous growth in the number of unattended assay and monitoring systems in the field. These systems have enabled reduced presence of inspectors while increasing the verification coverage. As part of the Strengthened safeguards System and in particular as part of the measures to improve the cost-effectiveness of safeguards, the possibility of remote transfer of authenticated and encrypted video surveillance, seals and radiation sensor data via telephone or special satellite links have been demonstrated and the necessary arrangements and infrastructure have been prepared. The evaluation of field trials of the remote monitoring systems have shown that the systems are effective in monitoring events of safeguards relevance in near real times. The systems are competitive from a cost standpoint when compared to current methods. The reduction of inspection efforts can be realized by application of remote monitoring technique with scheduled inspections and more effectively with the short notice or unannounced random inspections. It is expected that, upon completion of the necessary arrangements with the Member States authorities, the safeguards department will implement the technique widely before the year 2000

  10. Radiation technique for the destruction of plutella

    International Nuclear Information System (INIS)

    1980-01-01

    Plutella can be destroyed by cultivation technique where cabbage is grown interchangebly with other plants, biological technique where the natural enemy of plutella is used, and chemical technique where insecticide is used. Those method do not better results than the sterile male technique which can be either nuclear or chemical in nature. Laboratory, semifield research, and research in a limited field have been carried out when applying the sterile male technique. (SMN)

  11. Stereo vision techniques for telescience

    Science.gov (United States)

    Hewett, S.

    1990-02-01

    The Botanic Experiment is one of the pilot experiments in the Telescience Test Bed program at the ESTEC research and technology center of the European Space Agency. The aim of the Telescience Test Bed is to develop the techniques required by an experimenter using a ground based work station for remote control, monitoring, and modification of an experiment operating on a space platform. The purpose of the Botanic Experiment is to examine the growth of seedlings under various illumination conditions with a video camera from a number of viewpoints throughout the duration of the experiment. This paper describes the Botanic Experiment and the points addressed in developing a stereo vision software package to extract quantitative information about the seedlings from the recorded video images.

  12. New techniques in systems neuroscience

    CERN Document Server

    2015-01-01

    This volume is essential reading for anyone wishing to understand the recent explosion of experimental tools in neuroscience that now make it possible to manipulate, record, and understand neuronal activity within the intact brain, and which are helping us to learn how the many neurons that comprise a network act together to control behavior. Leaders in the field discuss the latest developments in optogenetics, functional imaging, circuit mapping, and the application of these tools to complex biological problems. New Techniques in Systems Neuroscience Explores cutting-edge methodological developments and their biological motivations Covers state-of-the-art advances in optogenetics, imaging, circuit mapping, and the molecular characterization of individual neurons Describes key examples of how these methods have been applied in different model organisms Is appropriate for experts and those just entering the field alike.

  13. Technique of nuclear reactors controls

    International Nuclear Information System (INIS)

    Weill, J.

    1953-12-01

    This report deal about 'Techniques of control of the nuclear reactors' in the goal to achieve the control of natural uranium reactors and especially the one of Saclay. This work is mainly about the measurement into nuclear parameters and go further in the measurement of thermodynamic variables,etc... putting in relief the new features required on behalf of the detectors because of their use in the thermal neutrons flux. In the domain of nuclear measurement, we indicate the realizations and the results obtained with thermal neutron detectors and for the measurement of ionizations currents. We also treat the technical problem of the start-up of a reactor and of the reactivity measurement. We give the necessary details for the comprehension of all essential diagrams and plans put on, in particular, for the reactor of Saclay. (author) [fr

  14. New Techniques in Neutron Scattering

    DEFF Research Database (Denmark)

    Birk, Jonas Okkels

    potential performance than any existing facility, however in order to use this pulse structure optimally many existing neutron scattering instruments will need to be redesigned. This defense will concentrate on the design and optimization of the inverse time-of-flight cold neutron spectrometer CAMEA......, simulations and prototyping to optimize the instrument and ensure that it will deliver the predicted performance when constructed. During the design a new prismatic analyser concept that can be of interest to many other neutron spectrometers was developed. The design work was compiled into an instrument......Neutron scattering is an important experimental technique in amongst others solid state physics, biophysics, and engineering. This year construction of European Spallation Source (ESS) was commenced in Lund, Sweeden. The facility will use a new long pulsed source principle to obtain higher...

  15. Laparoscopic intestinal derotation: original technique.

    Science.gov (United States)

    Valle, Mario; Federici, Orietta; Tarantino, Enrico; Corona, Francesco; Garofalo, Alfredo

    2009-06-01

    The intestinal derotation technique, introduced by Cattel and Valdoni 40 years ago, is carried out using a laparoscopic procedure, which is described here for the first time. The method is effective in the treatment of malign lesions of the III and IV duodenum and during laparoscopic subtotal colectomy with anastomosis between the ascending colon and the rectum. Ultimately, the procedure allows for the verticalization of the duodenal C and the anterior positioning of the mesenteric vessels, facilitating biopsy and resection of the III and IV duodenal portions and allowing anastomosis of the ascending rectum, avoiding both subtotal colectomy and the risk of torsion of the right colic loop. Although the procedure calls for extensive experience with advanced video-laparoscopic surgery, it is both feasible and repeatable. In our experience we have observed no mortality or morbidity.

  16. Imaging XPS - a new technique

    International Nuclear Information System (INIS)

    Gurker, N.; Ebel, M.F.; Ebel, H.

    1983-01-01

    XPS imaging promises to be a powerful analytic tool because it enables specific information on both elements and bonding to be recorded on a two-dimensional distribution map. As far as the authors are aware, the only scanning XPS method to date which has been found to be practical is essentially a scanned-particle-beam method, like scanning AES, and it is only applicable to thin film specimens. This paper provides the basic ideas of a new imaging XPS technique based on a quite different concept. It will be applicable to any kind of specimen that can be analysed in a conventional XPS system. It makes use of the dispersion properties of a spherical condenser-type spectrometer and applies a two-dimensional electron detection device for decoding the energy and emission position of an analysed photoelectron. Experimental arrangement and theory of operation are presented. (author)

  17. Present challenges in hadrontherapy techniques

    Science.gov (United States)

    Amaldi, U.; Braccini, S.

    2011-07-01

    Hadrontherapy is a high-precision technique in cancer radiation therapy, which allows obtaining a superior conformal treatment with respect to photons used in conventional radiation therapy. To reach this ambitious goal without reducing the patient throughput needed in a hospital-based environment, the physical and radiobiological properties of charged hadrons, protons and carbon ions in particular, have to be exploited at best, making use of the most modern technologies issued from research in nuclear and particle physics. In the present days, we are assisting to a continuous technological challenge, leading to the conception and to the development of innovative methods and instruments. In this paper, the most relevant challenges in dose delivery systems, gantries, imaging, quality assurance and particle accelerators are reviewed.

  18. Radiographic techniques for digital mammography

    International Nuclear Information System (INIS)

    Horita, Katsuhei

    2007-01-01

    Since the differences in X-ray absorption between various breast tissues are small, a dedicated X-ray system for examination of the breast and a high-contrast, high-resolution screen/film system (SFM) (light-receiving system) are employed for X-ray diagnosis. Currently, however, there is a strong trend toward digital imaging in the field of general radiography, and this trend is also reflected in the field of mammographic examination. In fact, approximately 70% of facilities purchasing new mammography systems are now selecting a digital mammography system (DRM). Given this situation, this report reviews the differences between SFM and DRM and discusses the radiographic techniques and quality assurance procedures for digital mammography. (author)

  19. Laboratory techniques for human embryos.

    Science.gov (United States)

    Geber, Selmo; Sales, Liana; Sampaio, Marcos A C

    2002-01-01

    This review is concerned with laboratory techniques needed for assisted conception, particularly the handling of gametes and embryos. Such methods are being increasingly refined. Successive stages of fertilization and embryogenesis require especial care, and often involve the use of micromanipulative methods for intracytoplasmic sperm injection (ICSI) or preimplantation genetic diagnosis. Embryologists must take responsibility for gamete collection and preparation, and for deciding on the means of insemination or ICSI. Embryos must be assessed in culture, during the 1-cell, cleaving and morula/blastocyst stages, and classified according to quality. Co-culture methods may be necessary. The best embryos for transfer must be selected and loaded into the transfer catheter. Embryos not transferred must be cryopreserved, which demands the correct application of current methods of media preparation, seeding and the correct speed for cooling and warming. Before too long, methods of detecting abnormal embryos and avoiding their transfer may become widespread.

  20. Asset management techniques for transformers

    International Nuclear Information System (INIS)

    Abu-Elanien, Ahmed E.B.; Salama, M.M.A.

    2010-01-01

    In a deregulated/reformed environment, the electric utilities are under constant pressure for reducing operating costs, enhancing the reliability of transmission and distribution equipments, and improving quality of power and services to the customer. Moreover, the risk involved in running the system without proper attention to assets integrity in service is quite high. Additionally, the probability of losing any equipment vital to the transmission and distribution system, such as power and distribution transformers, is increasing especially with the aging of power system's assets. Today the focus of operating the power system is changed and efforts are being directed to explore new approaches/techniques of monitoring, diagnosis, condition evaluation, maintenance, life assessment, and possibility of extending the life of existing assets. In this paper, a comprehensive illustration of the transformer asset management activities is presented. The importance of each activity together with the latest researches done in the area is highlighted. (author)

  1. Design Techniques and Reservoir Simulation

    Directory of Open Access Journals (Sweden)

    Ahad Fereidooni

    2012-11-01

    Full Text Available Enhanced oil recovery using nitrogen injection is a commonly applied method for pressure maintenance in conventional reservoirs. Numerical simulations can be practiced for the prediction of a reservoir performance in the course of injection process; however, a detailed simulation might take up enormous computer processing time. In such cases, a simple statistical model may be a good approach to the preliminary prediction of the process without any application of numerical simulation. In the current work, seven rock/fluid reservoir properties are considered as screening parameters and those parameters having the most considerable effect on the process are determined using the combination of experimental design techniques and reservoir simulations. Therefore, the statistical significance of the main effects and interactions of screening parameters are analyzed utilizing statistical inference approaches. Finally, the influential parameters are employed to create a simple statistical model which allows the preliminary prediction of nitrogen injection in terms of a recovery factor without resorting to numerical simulations.

  2. Multilevel techniques for Reservoir Simulation

    DEFF Research Database (Denmark)

    Christensen, Max la Cour

    The subject of this thesis is the development, application and study of novel multilevel methods for the acceleration and improvement of reservoir simulation techniques. The motivation for addressing this topic is a need for more accurate predictions of porous media flow and the ability to carry...... Full Approximation Scheme) • Variational (Galerkin) upscaling • Linear solvers and preconditioners First, a nonlinear multigrid scheme in the form of the Full Approximation Scheme (FAS) is implemented and studied for a 3D three-phase compressible rock/fluids immiscible reservoir simulator...... is extended to include a hybrid strategy, where FAS is combined with Newton’s method to construct a multilevel nonlinear preconditioner. This method demonstrates high efficiency and robustness. Second, an improved IMPES formulated reservoir simulator is implemented using a novel variational upscaling approach...

  3. Developments in medical imaging techniques

    International Nuclear Information System (INIS)

    Kramer, Cornelis

    1979-01-01

    A review of the developments in medical imaging in the past 25 years shows a strong increase in the number of physical methods which have become available for obtaining images of diagnostic value. It is shown that despite this proliferation of methods the equipment used for obtaining the images can be based on a common structure. Also the resulting images can be characterized by a few relevant parameters which indicate their information content. On the basis of this common architecture a study is made of the potential capabilities of the large number of medical imaging techniques available now and in the future. Also the requirements and possibilities for handling the images obtained and for controlling the diagnostic systems are investigated [fr

  4. Kyphoplasty: indications, contraindications and technique

    International Nuclear Information System (INIS)

    Masala, Salvatore; Fiori, Roberto; Massari, Francesco; Simonetti, Giovanni

    2005-01-01

    Purpose. Percutaneous Kyphoplasty is an emerging Interventional Radiology technique consisting in injecting polymethylmethacrylate (PMMA) into collapsed vertebral bodies under fluoroscopic guidance, after compaction of the cancellous bone with two dedicated balloon catheters. The purpose of our study was to assess the indications, contraindications, technique and results of our initial study. Materials and methods. Between January and May 2003 we treated 11 patients (5 men, 6 women) with vertebral collapse occurred up to three months earlier and osteoporosis or myeloma (mean age: 68.9), with pain refractory to medical therapy. All patients underwent treatment on a single vertebra (1 D7; 1 D8; 2 D12; 3 L1; 3 L2; 1 l4). Patient selection was based on clinical and instrumental criteria: conventional radiography, CT and MR were performed on all patients before the procedure. The Visual Analogue scale (VAS) for pain assessment was used to evaluate the post-procedure results. Results. All patients showed an increase in the height of the collapsed vertebral body, associated with partial or complete pain relief (VAS score decreasing from a pre-treatment score of 8 to a score of 2 after treatment). No complications related to the procedure were recorded. Conclusions. The indications for kyphoplasty include recent vertebral compression fractures due to osteoporosis, myeloma, metastasis and vertebral angioma with intractable pain and with no neurological symptoms. The main contraindications are coagulation disorders, unstable fractures or complete vertebral collapse (vertebra plana). Kyphoplasty proved to be a safe and effective method for the treatment of intractable pain due to vertebral collapse that allows for shorter hospital stays and an immediate improvement in the patient's quality of life [it

  5. Visual air quality simulation techniques

    Science.gov (United States)

    Molenar, John V.; Malm, William C.; Johnson, Christopher E.

    Visual air quality is primarily a human perceptual phenomenon beginning with the transfer of image-forming information through an illuminated, scattering and absorbing atmosphere. Visibility, especially the visual appearance of industrial emissions or the degradation of a scenic view, is the principal atmospheric characteristic through which humans perceive air pollution, and is more sensitive to changing pollution levels than any other air pollution effect. Every attempt to quantify economic costs and benefits of air pollution has indicated that good visibility is a highly valued and desired environmental condition. Measurement programs can at best approximate the state of the ambient atmosphere at a few points in a scenic vista viewed by an observer. To fully understand the visual effect of various changes in the concentration and distribution of optically important atmospheric pollutants requires the use of aerosol and radiative transfer models. Communication of the output of these models to scientists, decision makers and the public is best done by applying modern image-processing systems to generate synthetic images representing the modeled air quality conditions. This combination of modeling techniques has been under development for the past 15 yr. Initially, visual air quality simulations were limited by a lack of computational power to simplified models depicting Gaussian plumes or uniform haze conditions. Recent explosive growth in low cost, high powered computer technology has allowed the development of sophisticated aerosol and radiative transfer models that incorporate realistic terrain, multiple scattering, non-uniform illumination, varying spatial distribution, concentration and optical properties of atmospheric constituents, and relative humidity effects on aerosol scattering properties. This paper discusses these improved models and image-processing techniques in detail. Results addressing uniform and non-uniform layered haze conditions in both

  6. Radio techniques for probing the terrestrial ionosphere.

    Science.gov (United States)

    Hunsucker, R. D.

    The subject of the book is a description of the basic principles of operation, plus the capabilities and limitations of all generic radio techniques employed to investigate the terrestrial ionosphere. The purpose of this book is to present to the reader a balanced treatment of each technique so they can understand how to interpret ionospheric data and decide which techniques are most effective for studying specific phenomena. The first two chapters outline the basic theory underlying the techniques, and each following chapter discusses a separate technique. This monograph is entirely devoted to techniques in aeronomy and space physics. The approach is unique in its presentation of the principles, capabilities and limitations of the most important presently used radio techniques. Typical examples of data are shown for the various techniques, and a brief historical account of the technique development is presented. An extended annotated bibliography of the salient papers in the field is included.

  7. Pressure-Sensor Assembly Technique

    Science.gov (United States)

    Pruzan, Daniel A.

    2003-01-01

    Nielsen Engineering & Research (NEAR) recently developed an ultrathin data acquisition system for use in turbomachinery testing at NASA Glenn Research Center. This system integrates a microelectromechanical- systems- (MEMS-) based absolute pressure sensor [0 to 50 psia (0 to 345 kPa)], temperature sensor, signal-conditioning application-specific integrated circuit (ASIC), microprocessor, and digital memory into a package which is roughly 2.8 in. (7.1 cm) long by 0.75 in. (1.9 cm) wide. Each of these components is flip-chip attached to a thin, flexible circuit board and subsequently ground and polished to achieve a total system thickness of 0.006 in. (0.15 mm). Because this instrument is so thin, it can be quickly adhered to any surface of interest where data can be collected without disrupting the flow being investigated. One issue in the development of the ultrathin data acquisition system was how to attach the MEMS pressure sensor to the circuit board in a manner which allowed the sensor s diaphragm to communicate with the ambient fluid while providing enough support for the chip to survive the grinding and polishing operations. The technique, developed by NEAR and Jabil Technology Services Group (San Jose, CA), is described below. In the approach developed, the sensor is attached to the specially designed circuit board, see Figure 1, using a modified flip-chip technique. The circular diaphragm on the left side of the sensor is used to actively measure the ambient pressure, while the diaphragm on the right is used to compensate for changes in output due to temperature variations. The circuit board is fabricated with an access hole through it so that when the completed system is installed onto a wind tunnel model (chip side down), the active diaphragm is exposed to the environment. After the sensor is flip-chip attached to the circuit board, the die is underfilled to support the chip during the subsequent grinding and polishing operations. To prevent this

  8. ARPEFS as an analytic technique

    International Nuclear Information System (INIS)

    Schach von Wittenau, A.E.

    1991-04-01

    Two modifications to the ARPEFS technique are introduced. These are studied using p(2 x 2)S/Cu(001) as a model system. The first modification is the obtaining of ARPEFS χ(k) curves at temperatures as low as our equipment will permit. While adding to the difficulty of the experiment, this modification is shown to almost double the signal-to-noise ratio of normal emission p(2 x 2)S/Cu(001) χ(k) curves. This is shown by visual comparison of the raw data and by the improved precision of the extracted structural parameters. The second change is the replacement of manual fitting of the Fourier filtered χ(k) curves by the use of the simplex algorithm for parameter determination. Again using p(2 x 2)S/Cu(001) data, this is shown to result in better agreement between experimental χ(k) curves and curves calculated based on model structures. The improved ARPEFS is then applied to p(2 x 2)S/Ni(111) and (√3 x √3) R30 degree S/Ni(111). For p(2 x 2)S/Cu(001) we find a S-Cu bond length of 2.26 Angstrom, with the S adatom 1.31 Angstrom above the fourfold hollow site. The second Cu layer appears to be corrugated. Analysis of the p(2 x 2)S/Ni(111) data indicates that the S adatom adatom adsorbs onto the FCC threefold hollow site 1.53 Angstrom above the Ni surface. The S-Ni bond length is determined to be 2.13 Angstrom, indicating an outwards shift of the first layer Ni atoms. We are unable to assign a unique structure to (√3 x √3)R30 degree S/Ni(111). An analysis of the strengths and weaknesses of ARPEFS as an experimental and analytic technique is presented, along with a summary of problems still to be addressed

  9. Spectrum monitoring procedures and techniques

    Science.gov (United States)

    1990-07-01

    The first step towards operating an emitter on a test range is to contact the local frequency manager to establish a schedule. Since restricted radio frequency bands and operations are different at each test range location, most testing is accomplished by sharing the spectrum available with all range users. The telemetry bands in particular require spectrum activity scheduling. The objective is to resolve scheduling conflicts prior to operations. When two programs or projects request to use the same spectrum, their activity can be separated by quard bands, discrete frequencies, time, or operating locations (terrain masking). Priorities assigned to each program usually dictate which program will be scheduled first; however, use of priorities to schedule activities should be avoided and only considered as a last resort. When a scheduling conflict cannot be resolved using these techniques, it is brought to the attention of the responsible program managers. When scheduling activities involve other federal or nonfederal agencies, it is in the best interest of program managers to be as flexible as possible.

  10. Analytical chemistry: Principles and techniques

    International Nuclear Information System (INIS)

    Hargis, L.G.

    1988-01-01

    Although this text seems to have been intended for use in a one-semester course in undergraduate analytical chemistry, it includes the range of topics usually encountered in a two-semester introductory course in chemical analysis. The material is arranged logically for use in a two-semester course: the first 12 chapters contain the subjects most often covered in the first term, and the next 10 chapters pertain to the second (instrumental) term. Overall breadth and level of treatment are standards for an undergraduate text of this sort, and the only major omission is that of kinetic methods (which is a common omission in analytical texts). In the first 12 chapters coverage of the basic material is quite good. The emphasis on the underlying principles of the techniques rather than on specifics and design of instrumentation is welcomed. This text may be more useful for the instrumental portion of an analytical chemistry course than for the solution chemistry segment. The instrumental analysis portion is appropriate for an introductory textbook

  11. Imaging techniques for ultrasonic testing

    International Nuclear Information System (INIS)

    2013-01-01

    These seminar proceedings contain 16 lectures on the following topics: 1. From imaging to quantification - ultrasound methods in medical diagnostics; 2. SAFT, TOFD, Phased Array - classical applications and recent developments in ultrasonic imaging; 3. Innovative ultrasonic imaging methods in research and application; 4. Industrial ultrasonic testing of fibre-reinforced structures of complex geometry; 5. Visualisation of crack tips in the inspection of wheel set shafts with longitudinal boreholes as a means of avoiding unnecessary wheel set changes; 6. Areal analysis of the propagation of Lamb waves on curved, anisotropic structures; 7. High-resolution representation in immersion technique testing; 8. Variants in generating images from phased array measurement data - practical examples involving copper, carbon-fibre reinforced plastic and other materials; 9. GIUM - an unconventional method of microstructure imaging using ultrasonic stimulation and laser vibrometry scanning; 10. Innovative air-ultrasonic testing concepts for improved imaging; 11. Use of imaging methods for improving the quality of test results from nondestructive testing; 12. Modelling and visualisation of EMUS stimulation for transducer optimisation; 13. Use of SAFT in the manufacture of energy conversion machines; 14. Ultrasonic imaging tests for improved defect characterisation during weld seam inspection on longitudinally welded large-diameter pipes; 15. SAFT reconstruction for testing austenitic weld seams and dissimilar metal weld seams for transverse cracks; 16. Imaging-based optimisation method for quantitative ultrasonic testing of anisotropic inhomogeneous austenitic welded joints with determination and utilisation of their elastic properties. One contribution has been abstracted separately. [de

  12. A poloidal field measurement technique

    International Nuclear Information System (INIS)

    Jobes, F.C.

    1989-07-01

    The poloidal field of a tokamak can be determined by observing the light emitted by He + ions injected into the plasma by a perpendicular He 0 beam. These ions will orbit in small circles located where the neutral atom became ionized, and they will remain there for a few microseconds. During this time, some of these ions will also emit light at various spectral lines. The observed spectrum of any of these lines will have a peculiar and very wide shape, and it will be offset (Doppler shifted) with respect to the natural line location. The location and width of the spectral pattern provide independent information about the components of the poloidal field which are parallel and perpendicular to the beam velocity, and this information is local to the point where the light is emitted. For a horizontal beam, these components are b x and b y , respectively. The difference in Doppler shift between two measurement points above one another (at the top and bottom of the beam) is directly proportional to δb x , which in turn is proportional to the transform on that flux surface. Thus, this technique provides a means to measure directly local values of q(r). Simulation studies indicate that accurate measurements can be made in milliseconds. 6 refs., 8 figs

  13. Reattachment techniques - Few case reports

    Directory of Open Access Journals (Sweden)

    Nitin Shah

    2009-01-01

    Full Text Available Anterior crown fractures are a common form of injury that mainly affects children and adolescents. In the pre-adhesive era fractured teeth needed to be restored either with pin-retained inlays or cast restorations that sacrificed healthy tooth structure. Achieving aesthetic requirements were also a challenge for the clinicians. The development of adhesive dentistry has allowed dentists to use the broken fragment to restore the fractured tooth. The acid etch adhesive technique may be used to restore function and esthetics of fractured anterior teeth. Reattachment of the fractured segment offers some advantages over composite restorations. The original enamel translucency is maintained, and the incisal edge will wear at the same rate as the adjacent teeth. Esthetic, biologic and restorative problems may occur as a result of the fracture extending subgingivally and impinging on the biologic width. The treatment options depend on the relationship of the fracture to the alveolar crest, degree of pulpal involvement, amount of eruption, apex formation and esthetic requirement of the patient. This article presents two clinical reports describing the treatment modalities of patients who sustained fractures of maxillary anterior teeth due to trauma.

  14. DOE transporation programs - computerized techniques

    Energy Technology Data Exchange (ETDEWEB)

    Joy, D.S.; Johnson, P.E.; Fore, C.S.; Peterson, B.E.

    1983-01-01

    One of the major thrusts of the transportation programs at the Oak Ridge National Laboratory has been the development of a number of computerized transportation programs and data bases. The U.S. Department of Energy (DOE) is supporting these efforts through the Transportation Technology Center at Sandia National Laboratories and the Tranportation Operations and Traffic Management (TOTM) organization at DOE Headquarters. Initially this project was centered upon research activities. However, since these tools provide traffic managers and key personnel involved in preshipment planning with a unique resource for ensuring that the movement of radioactive materials can be properly accomplished, additional interest and support is coming from the operational side of DOE. The major accomplishments include the development of two routing models (one for rail shipments and the other for highway shipments), an emergency response assistance program, and two data bases containing pertinent legislative and regulatory information. This paper discusses the mose recent advances in, and additions to, these computerized techniques and provides examples of how they are used.

  15. New techniques of positron annihilation

    International Nuclear Information System (INIS)

    1983-02-01

    Studies on new techniques of positron annihilation and its application to various fields are presented. First, production of slow positron and its characteristic features are described. The slow positron can be obtained from radioisotopes by using a positron moderator, proton beam bombardment on a boron target, and pair production by using an electron linear accelerator. Bright enhancement of the slow positron beam is studied. Polarized positron beam can be used for the study of the momentum distribution of an electron in ferromagnetic substances. Production of polarized positrons and measurements of polarization are discussed. Various phases of interaction between slow positrons and atoms (or molecules) are described. A comparative study of electron scavenging effects on luminescence and on positronium formation in cyclohexane is presented. The positron annihilation phenomena are applicable for the surface study. The microscopic information on the surface of porous material may be obtained. The slow positrons are also useful for the surface study. Production and application of slow muon (positive and negative) are presented in this report. (Kato, T.)

  16. Liquid scintillation alpha spectrometry techniques

    International Nuclear Information System (INIS)

    McKlveen, J.W.; McDowell, W.J.

    1984-01-01

    Accurate, quantitative determinations of alpha emitting nuclides by conventional plate counting methods are difficult, because of sample self-absorption problems in counting and because of non-reproducible losses in conventional sample separation methods. Liquid scintillation alpha spectrometry offers an attractive alternative with no sample self-absorption or geometry problems and with 100% counting efficiency. Sample preparation may include extraction of the alpha emitter of interest by a specific organic phase-soluble compound directly into the liquid scintillation counting medium. Detection electronics use energy and pulse-shape discrimination, to yield alpha spectra without beta and gamma background interference. Specific procedures have been developed for gross alpha, uranium, plutonium, thorium and colonium assay. Possibilities for a large number of other applications exist. Accuracy and reproducibility are typically in the 1% range. Backgrounds of the order of 0.01 cpm are readily achievable. The paper will present an overview of liquid scintillation alpha counting techniques and some of the results achieved for specific applications. (orig.)

  17. Uranium evaluation and mining techniques

    International Nuclear Information System (INIS)

    1980-01-01

    Full text: Report on an IAEA/NEA/IANEC international symposium, Buenos Aires, Argentina, 1-5 October 1979. The symposium was attended by 162 participants from 35 countries and five international organizations, with 35 observers also registered. Twenty-nine papers and two informal discussions were presented in seven sessions. Planning nuclear power programmes is fraught with a very wide range of uncertainties, some of which are the uncertainties associated with rising costs and ever-lengthening lead times, the uncertainties of the rate of growth of nuclear energy, the uncertainties caused by anti-nuclear activities, and the uncertainties of uranium resources and availability of uranium supplies. Present known resources, not all of which may actually become uranium supply before the year 2025, are slightly less than 5 million tonnes uranium. Even if all these resources could be produced, production rates from them would drop seriously in the mid-1990s. It is, therefore, most important that the uncertainty of uranium resources and availability of supply be dealt with promptly. In this respect many countries of the world have begun national programmes either to determine their uranium potential, or to explore for uranium deposits. The symposium held in Buenos Aires at the invitation of the Government of Argentina sought to provide these countries with a state-of-the-art report on the various methods of uranium resource evaluation. Developments and improvements in both new and old techniques of mineral assessment proliferate. Notable among the 'newer' methods are geostatistical estimation of ore reserves, a sophisticated method which, although still under development, has gained wide recognition. In the domain of objective measurements and sample-based estimation procedures, the older classical methods also yield acceptable estimates when properly used. But uranium ore reserves are always inadequate for long-range planning, seldom exceeding a few years' demand. An

  18. Diffraction Techniques in Structural Biology

    Science.gov (United States)

    Egli, Martin

    2016-01-01

    A detailed understanding of chemical and biological function and the mechanisms underlying the molecular activities ultimately requires atomic-resolution structural data. Diffraction-based techniques such as single-crystal X-ray crystallography, electron microscopy, and neutron diffraction are well established and they have paved the road to the stunning successes of modern-day structural biology. The major advances achieved in the last 20 years in all aspects of structural research, including sample preparation, crystallization, the construction of synchrotron and spallation sources, phasing approaches, and high-speed computing and visualization, now provide specialists and nonspecialists alike with a steady flow of molecular images of unprecedented detail. The present unit combines a general overview of diffraction methods with a detailed description of the process of a single-crystal X-ray structure determination experiment, from chemical synthesis or expression to phasing and refinement, analysis, and quality control. For novices it may serve as a stepping-stone to more in-depth treatises of the individual topics. Readers relying on structural information for interpreting functional data may find it a useful consumer guide. PMID:27248784

  19. Flow theory and MR techniques

    International Nuclear Information System (INIS)

    Listerud, J.; Altas, S.W.; Axel, L.

    1991-01-01

    One of the unique characteristics of magnetic resonance imaging (MRI) is its depiction of flow, even without the administration of intravascular contrast agents. Flow-related phenomena were recognized early in the development of nuclear magnetic resonance, well before imaging techniques were even devised. The appearance of flowing fluid (e.g., blood or CSF) is important to understand for several reasons. First, its signal intensity is quite variable, even in normal physiologic states, so the possibility of misinterpreting normal findings as representing pathologic conditions, such as vascular thrombosis, is reduced if one has a solid conceptualization of the physical basis of flow effects. Second, signal emanating from flowing spins often generates significant artifacts that can obscure anatomy and degrade images, thereby reducing the radiologist's ability to interpret images and identify lesions. The understanding of flow artifacts allows one to recognize them and implement maneuvers to eliminate or compensate for such effects. Third, it has become apparent that the signal information from flow can be exploited to provide previously unavailable physiologic information

  20. Bases en technique du vide

    CERN Document Server

    Rommel, Guy

    2017-01-01

    Cette seconde édition, 20 ans après la première, devrait continuer à aider les techniciens pour la réalisation de leur système de vide. La technologie du vide est utilisée, à présent, dans de nombreux domaines très différents les uns des autres et avec des matériels très fiables. Or, elle est souvent bien peu étudiée, de plus, c'est une discipline où le savoir-faire prend tout son sens. Malheureusement la transmission par des ingénieurs et techniciens expérimentés ne se fait plus ou trop rapidement. La technologie du vide fait appel à la physique, à la chimie, à la mécanique, à la métallurgie, au dessin industriel, à l'électronique, à la thermique, etc. Cette discipline demande donc de maîtriser des techniques de domaines très divers, et ce n'est pas chose facile. Chaque installation est en soi un cas particulier avec ses besoins, sa façon de traiter les matériaux et celle d'utiliser les matériels. Les systèmes de vide sont parfois copiés d'un laboratoire à un autre et le...