检索结果-南通市图书馆

Experimental demonstration of linear and spinning janus dipoles for polarisation-and wavelength-selective near-field coupling

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Light(Science & Applications) 2019年第1期8卷 732-738页

作者： Michela F.Picardi Martin Neugebauer jorg S.Eismann Gerd Leuchs Peter Banzer francisco j.rodriguez-fortuno Anatoly V.Zayats Department of Physics and London Centre for Nanotechnology King’s College LondonStrandLondon WC2R LS UK.2Max Planck Institute for the Science of LightStaudtstr.2D-91058 ErlangenGermany Institute of Optics Information and PhotonicsUniversity Erlangen-NurembergStaudtstr.7/B2D-91058 ErlangenGermany

The electromagnetic field scattered by nano-objects contains a broad range of wavevectors and can be efficiently coupled to waveguided *** dominant contribution to scattering from subwavelength dielectric and plasmonic nanoparticles is determined by electric and magnetic dipolar ***,we experimentally demonstrate spectral and phase selective excitation of janus dipoles,sources with electric and magnetic dipoles oscillating out of phase,in order to control near-field interference and directional coupling to *** show that by controlling the polarisation state of the dipolar excitations and the excitation wavelength to adjust their relative contributions,directionality and coupling strength can be fully ***,we introduce a novel spinning janus dipole featuring cylindrical symmetry in the near and far field,which results in either omnidirectional coupling or *** the propagation of guided light waves via fast and robust near-field interference between polarisation components of a source is required in many applications in nanophotonics and quantum optics.

关键词： coupling spinning excitation

Inexpensive and flexible nanographene-based electrodes for ubiquitous electrocardiogram monitoring

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

npj Flexible Electronics 2019年第1期3卷 100-105页

作者： francisco j.Romero Encarnacion Castillo Almudena Rivadeneyra Alejandro Toral-Lopez Markus Becherer francisco G.Ruiz Noel rodriguez Diego P.Morales Pervasive Electronics Advanced Research Laboratory University of Granada18071 GranadaSpain Department of Electronics and Computer Technology University of Granada18071 GranadaSpain Institute for Nanoelectronics Technische Universität München80333 MunichGermany Biochemistry and Electronics as Sensing Technologies Group University of Granada18071 GranadaSpain

Flexible electronics is one of the fundamental technologies for the development of electronic skin,implant wearables,or ubiquitous *** this context,graphene-derived materials have attracted great interest due to their unique properties to fulfill the demands of these *** we report a simple one-step method for the fabrication of electrophysical electrodes based on the photothermal production of porous nanographene structures on the surface of flexible polyimide *** approach constitutes an inexpensive alternative to the commercial medical electrodes,leading to a lower and much more stable skin–electrode contact resistance and providing comparable signal *** technology has been framed inside the IoT paradigm through the development of a denoising and signal classification clustering algorithm suitable for its implementation in wearable *** experiments have shown promising achievements regarding noise reduction,increasing the crest factor~3.7 dB,as well as for the over 90%heart rate-monitoring accuracy.

关键词： ubiquitous IoT electrodes

Impaired immune reaction and increased lactate and C-reactive protein for early prediction of severe morbidity and pancreatic fistula after pancreatoduodenectomy

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Hepatobiliary & Pancreatic Diseases International 2020年第1期19卷 58-67页

作者： Mario rodriguez-Lopez francisco j.Tejero-Pintor Martin Bailon-Cuadrado Asterio Barrera-Rebollo Baltasar Perez-Saborido David Pacheco-Sanchez General and Digestive Surgery Department Rio-Hortega University Hospital

Background: Prediction of complications after pancreatoduodenectomy (PD) remains of interest. Blood parameters and biomarkers during rst and second postoperative days (POD1, POD2) may be early indi- cators of complications. Methods: This case-control study included 50 patients. Baseline, POD1 and POD2 values of leukocytes, neutrophils, lymphocytes, platelets, hemoglobin, C-reactive protein (CRP), procalcitonin and arterial lactate were compared between individuals presenting Clavien ≥ III morbidity, pancreatic stula (PF) or clinically relevant PF (CRPF) and those without these morbidities. Common variables reaching signi cance were further analyzed in order to calculate a predictive score. Results: Severe morbidity, PF and CRPF rates were 28.0%, 26.0% and 14.0%, respectively. Patients with severe morbidity had lower leukocytes on POD2 (P=0.04). Patients with PF presented higher CRP on POD2 (P=0.001), higher lactate on POD1 (P=0.007) and POD2 (P=0.008), and lower lymphocytes on POD1 (P=0.007) and POD2 (P=0.008). Patients with CRPF had lower leukocytes and neutrophils on POD1 (P =0.048, P =0.038), lower lymphocytes on POD1 (P =0.001) and POD2 (P =0.003), and higher CRP on POD2 (P =0.001). Baseline parameters and procalcitonin obtained no statistical associations. Score was de ned according to lymphocytes on POD1 < 650/μL and CRP on POD2 ≥ 250 mg/L allocating patients in 3 risk categories. PF and CRPF rates were statistically higher as risk category increased (P<0.001). Receiver operating characteristic curves and Hosmer Lemeshow tests showed a good accuracy. Conclusions: Impaired immunological reaction during early postoperative period (lower leukocytes and, particularly, lymphocytes) in response to surgical aggression would favor complications after PD. Likewise, acidosis (higher arterial lactate) could behave as risk factor of PF. An elevated CRP on POD2 is also an early biomarker of PF. Our novel score based on postoperative lymphocyte count and CRP seems reliable

关键词： Pancreatoduodenectomy Morbidity Pancreatic fistula Biomarker Prediction Score

Severe morbidity after pancreatectomy is accurately pre dicte d by preoperative pancreatic resection score(PREPARE): A prospective validation analysis from a medium-volume center

在线全文

学校读者我要写书评

暂无评论

Hepatobiliary & Pancreatic Diseases International 2018年第6期17卷 559-565页

作者： Mario rodriguez-Lopez francisco j. Tejero-Pintor Baltasar Perez-Saborido Asterio Barrera-Rebollo Martin Bailon-Cuadrado David Pacheco-Sanchez General and Digestive Surgery Department Rio-Hortega University Hospital

Background: Major morbidity in pancreatic surgery remains high. Different scores for predicting complications have been described. Preoperative pancreatic resection(PREPARE) score is based on objective preoperative variables and offers good predictive accuracy for Clavien ≥ III complications. This study aimed to validate this score and analyze other preoperative variables in a prospective study performed in a medium-volume center. Methods: A total of 50 pancreatic resections were included. Preoperative variables were registered and PREPARE was calculated. The main outcome was severe morbidity(Clavien ≥ III) up to 30 days after discharge. The secondary outcomes were length of stay(LOS) and readmission. Statistical validation was performed to compare severe morbidity rate among the scores categories. Association with other preoperative variables(not included in PREPARE) was also tested. Results: Of the 50 pancreatic resections, the severe morbidity was 34.0%, with median LOS of 11 days. Readmission rate was 25.5%. Severe morbidity rates according to PREPARE categories were 18.5% in lowrisk group, 41.7% in intermediate-risk group, and 63.6% in high-risk group, respectively( P = 0.023). The accuracy was 72%(Hosmer–Lemeshow, P = 0.86). ROC curve was obtained both for PREPARE score expressed as incremental values and categorized as the three risk groups, showing an area under curve(AUC) of 0.736(95% CI: 0.586–0.887; P = 0.007) and 0.712(95% CI: 0.555–0.869; P = 0.015), respectively. PREPARE was significant in multivariate analysis. Median LOS was statistically higher as PREPARE category increases(9, 11 and 15 days in low-, intermediate-and high-risk groups, respectively; P = 0.009). Readmission was not associated with any variables. Conclusions: PREPARE behaves as an independent risk factor for severe morbidity after pancreatic surgery. Score validation shows good accuracy prediction. Increasing PREPARE category is also associated with longer LOS.

关键词： Pancreatic surgery Morbidity Complications Preoperative pancreatic resection score Validation

Preoperative pancreatic resection score:a preliminary prospective validation from Spain

在线全文

学校读者我要写书评

暂无评论

Hepatobiliary & Pancreatic Diseases International 2016年第6期15卷 667-668页

作者： Mario rodriguez-Lopez Martin Bailon-Cuadrado francisco j Tejero-Pintor Baltasar Perez-Saborido Enrique Asensio-Diaz Asterio Barrera-Rebollo General and Digestive Surgery Department Rio Hortega University HospitalDulzaina 247012ValladolidSpain

To the Editor：We read with outstanding interest the article by Celik et al. It is the first external description of the Hamburg＇s preoperative pancreatic resection （PREPARE） score since it was published in 2014 by Uzunoglu et al. According to the latter authors, it is necessary to stratify risk of major morbidity and mortality before performing a pancreatic resection, and PREPARE score is a simple index, validated in a multicenter cohort of patients undergoing this group of technically demanding procedures.

关键词： Preoperative pancreatic resection score

Fractional Square Functions and Potential Spaces, Ⅱ

在线全文

学校读者我要写书评

暂无评论

Acta Mathematica Sinica,English Series 2015年第11期31卷 1759-1774页

作者： jorge j.BETANCOR juan C.FARIA Lourdes rodriguez-MESA Ricardo TESTONI jos L.TORREA Departamento de Anlisis Matemtico Universidad de La Laguna Campus de Anchieta Avda.Astrofísico Francisco Snchez 38271 La Laguna (Sta.Cruz de Tenerife) Spain Departamento de Matemtica Universidad Nacional del Sur Avda. Alem 1253 8000 Bahía BlancaBuenos Aires Argentina Departamento de Matem'aticas Universidad Autónoma de Madrid ICMAT-CSIC-UAM-UCM-UC3MCiudad Universitaria de Canto Blanco 28049 Madrid Spain

In this paper, we study fractional square functions associated with the Poisson semigroup for SchrSdinger operators. We characterize the potential spaces in the SchrSdinger setting by using vertical, area and gλ, fra... 详细信息

关键词： g-function Schrodinger operator potential space

What the Hell Am I Doing Here？ A Look at a Series of Geriatric Centers, Profile of the Institutionalized Persons and Reasons for Admission

在线全文

学校读者我要写书评

暂无评论

journal of Life Sciences 2017年第1期11卷 47-52页

作者： Pascual Lopez, jose A. rodriguez Lavado, Paula Garcia jimenez, Catalina Martinez Valero, francisco j. Aracil Femeindez, javier Family Physician Primary Care Health Center Calasparra 30420 Murcia Spain Family Medicine Resident Primary Care Health Center Calasparra 30420 Murcia Spain

Risk of gastrointestinal cancer in a symptomatic cohort after a complete colonoscopy:Role of faecal immunochemical test

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World journal of Gastroenterology 2020年第1期26卷 70-85页

作者： Noel Pin-Vieito María j Iglesias David Remedios Lorena Rodríguez-Alonso francisco rodriguez-Moranta VictoriaÁlvarez-Sánchez Fernando Fernández-Bañares jaume Boadas Eva Martínez-Bauer Rafael Campo Luis Bujanda Ángel Ferrandez Virginia Piñol Daniel Rodríguez-Alcalde jordi Guardiola joaquín Cubiella Gastroenterology Department Complexo Hospitalario Universitario de OurenseCentro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas(CIBERehd)Ourense 32005Spain Department of Gastroenterology and Hepatology University Hospital of Bellvitge-IDIBELLL'Hospitalet de LlobregatBarcelona 08907Spain.Ciber de Epidemiología y Salud Pública(CIBERESP)Spain Gastroenterology Department Complejo Hospitalario de PontevedraPontevedra 36001Spain Gastroenterology Department Hospital Universitari Mútua de TerrassaCIBERehdTerrassa 08221Spain Gastroenterology Department Consorci Sanitari de TerrassaTerrassa 08221Spain Gastroenterology Department Hospital de SabadellCorporacióSanitària Donostia Hospital Biodonostia InstituteUniversity of the Basque Country UPV/EHUCIBERehdSan Sebastian 20010Spain Servicio de Aparato Digestivo Hospital Clínico UniversitarioIIS AragónUniversity of ZaragozaCIBERehdZaragoza 50009Spain Gastroenterology Department Hospital Dr.Josep TruetaGirona 17007Spain Digestive Disease Section Hospital Universitario de MóstolesMadrid 28935Spain

BACKGROUND Faecal immunochemical test(FIT)has been recommended to assess symptomatic patients for colorectal cancer(CRC)***,some conditions could theoretically favour blood originating in proximal areas of the gastrointestinal tract passing through the colon unmetabolized.A positive FIT result could be related to other gastrointestinal cancers(GIC).AIM To assess the risk of GIC detection and related death in FIT-positive symptomatic patients(threshold 10μg Hb/g faeces)without *** Post hoc cohort analysis performed within two prospective diagnostic test studies evaluating the diagnostic accuracy of different FIT analytical systems for CRC and significant colonic lesion *** patients with gastrointestinal symptoms referred consecutively for colonoscopy from primary and secondary healthcare,underwent a quantitative FIT before undergoing a complete *** without CRC were divided into two groups(positive and negative FIT)using the threshold of 10μg Hb/g of faeces and data from follow-up were retrieved from electronic medical records of the public hospitals involved in the *** determined the cumulative risk of GIC,CRC and upper *** rate(HR)was calculated adjusted by age,sex and presence of significant colonic *** We included 2709 patients without CRC and a complete baseline colonoscopy,730(26.9%)with FIT≥10μgr Hb/*** a mean time of 45.5±20.0 mo,a GIC was detected in 57(2.1%)patients:An upper GIC in 35(1.3%)and a CRC in 14(0.5%).Thirty-six patients(1.3%)died due to GIC:22(0.8%)due to an upper GIC and 9(0.3%)due to ***-positive subjects showed a higher CRC risk(HR 3.8,95%CI:1.2-11.9)with no differences in GIC(HR 1.5,95%CI:0.8-2.7)or upper GIC risk(HR 1.0,95%CI:0.5-2.2).Patients with a positive FIT had only an increased risk of CRC-related death(HR 10.8,95%CI:2.1-57.1)and GIC-related death(HR 2.2,95%CI:1.1-4.3),with no differences in upper GIC-related death(HR 1.4,95%CI:0.6-3.3).An

关键词： Colonoscopy Colorectal cancer Faecal immunochemical test Gastric cancer Gastroesophageal cancer Gastrointestinal cancer Symptoms

Endoscopic and anesthetic feasibility of EUS and ERCP combined in a single session versus two different sessions

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World journal of Gastrointestinal Endoscopy 2011年第3期3卷 57-61页

作者： juan j Vila Marcos Kutz Silvia Goi Miriam Ostiz Edurne Amorena Carlos Prieto Cristina rodriguez Ignacio Fernández-Urien francisco j jiménez Endoscopy Unit Gastroenterology DepartmentComplejo Hospitalario de Navarra

AIM:To discuss the feasibility of single session endoscopic ultrasonography(EUS) to discuss and endoscopic retrograde cholangiopancreatography(ERCP) ***:Retrospective endoscopic and anesthetic outcome comparison of performing both EUS and ERCP in a single endoscopic session(Group Ⅰ) versus performing each procedure in two different sessions(Group Ⅱ) was *** following variables were evaluated:epidemiological variables,American Society of Anesthesiologists Physical Status Classification(ASA) level,procedural time,propofol dose,anesthetic complications,endoscopic complications and diagnostic yield,and therapeutic procedures on both groups.T-student,ChiSquare and Fisher test were used for ***:We included 39 patients in Group Ⅰ(mean age:69.85 ± 9.25;27 men) and 46 in Group Ⅱ(mean age:67.46 ± 12.57;25 men).Procedural time did not differ significantly between both groups(Group Ⅰvs Group Ⅱ:93 ± 32.78 vs 98.98 ± 38.17;P >0.05) but the dose of propofol differed(Group Ⅰ vs Group Ⅱ:322.28 ± 250.54 mg vs 516.96 ± 289.06 mg;P = 0.001).Three patients had normal findings on both *** anesthetic complications [O2 desaturation(2),broncoaspiration(1)] and 9 endoscopic complications [pancreatitis(6),bleeding(1),perforation(1),cholangitis(1)] occurred without significant differences between both groups(P > 0.05).We did not find any significant difference regarding age,sex,ASA scale level,diagnostic yield or therapeutic maneuvers between both ***:The performance of EUS and ERCP in a single session offers a similar diagnostic and therapeutic yield,does not entail a higher complication risk and requires a significantly smaller dose of propofol for sedation compared with performing each exploration in a different session.

关键词： Endosonography Endoscopic Retrograde Cholangiopancreatography Feasibility Studies Endoscopy Gastrointestinal Anesthesia