bluuebunny/crossref_metadata_2025_split huggingface dataset:
Form and function in hillslope hydrology: characterization of subsurface flow based on response observations
Authors: Angermann Lisa , Jackisch Conrad , Allroggen Niklas , Sprenger Matthias , Zehe Erwin , Tronicke Jens , Weiler Markus , Blume Theresa 
Published: July 2017

Abstract. The phrase form and function was established in architecture and biology and refers to the idea that form and functionality are closely correlated, influence each other, and co-evolve. We suggest transferring this idea to hydrological systems to separate and analyze their two main characteristics: their form, which is equivalent to the spatial structure and static properties, and their function, equivalent to internal responses and hydrological behavior. While this approach is not particularly new to hydrological field research, we want to employ this concept to explicitly pursue the question of what information is most advantageous to understand a hydrological system. We applied this concept to subsurface flow within a hillslope, with a methodological focus on function: we conducted observations during a natural storm event and followed this with a hillslope-scale irrigation experiment. The results are used to infer hydrological processes of the monitored system. Based on these findings, the explanatory power and conclusiveness of the data are discussed. The measurements included basic hydrological monitoring methods, like piezometers, soil moisture, and discharge measurements. These were accompanied by isotope sampling and a novel application of 2-D time-lapse GPR (ground-penetrating radar). The main finding regarding the processes in the hillslope was that preferential flow paths were established quickly, despite unsaturated conditions. These flow paths also caused a detectable signal in the catchment response following a natural rainfall event, showing that these processes are relevant also at the catchment scale. Thus, we conclude that response observations (dynamics and patterns, i.e., indicators of function) were well suited to describing processes at the observational scale. Especially the use of 2-D time-lapse GPR measurements, providing detailed subsurface response patterns, as well as the combination of stream-centered and hillslope-centered approaches, allowed us to link processes and put them in a larger context. Transfer to other scales beyond observational scale and generalizations, however, rely on the knowledge of structures (form) and remain speculative. The complementary approach with a methodological focus on form (i.e., structure exploration) is presented and discussed in the companion paper by Jackisch et al.(2017).
Synthetic tsunami waveform catalogs with kinematic constraints
Authors: Baptista Maria Ana , Miranda Jorge Miguel , Matias Luis , Omira Rachid 
Published: July 2017

Abstract. In this study we present a comprehensive methodology to produce a synthetic tsunami waveform catalogue in the northeast Atlantic, east of the Azores islands. The method uses a synthetic earthquake catalogue compatible with plate kinematic constraints of the area. We use it to assess the tsunami hazard from the transcurrent boundary located between Iberia and the Azores, whose western part is known as the Gloria Fault. This study focuses only on earthquake-generated tsunamis. Moreover, we assume that the time and space distribution of the seismic events is known. To do this, we compute a synthetic earthquake catalogue including all fault parameters needed to characterize the seafloor deformation covering the time span of 20 000 years, which we consider long enough to ensure the representability of earthquake generation on this segment of the plate boundary. The computed time and space rupture distributions are made compatible with global kinematic plate models. We use the tsunami empirical Green's functions to efficiently compute the synthetic tsunami waveforms for the dataset of coastal locations, thus providing the basis for tsunami impact characterization. We present the results in the form of offshore wave heights for all coastal points in the dataset. Our results focus on the northeast Atlantic basin, showing that earthquake-induced tsunamis in the transcurrent segment of the Azores–Gibraltar plate boundary pose a minor threat to coastal areas north of Portugal and beyond the Strait of Gibraltar. However, in Morocco, the Azores, and the Madeira islands, we can expect wave heights between 0.6 and 0.8 m, leading to precautionary evacuation of coastal areas. The advantages of the method are its easy application to other regions and the low computation effort needed.
Subthreshold micropulse laser reduces anti-VEGF injection burden in patients with diabetic macular edema
Authors: Moisseiev Elad , Abbassi Sam , Thinda Sumeer , Yoon Joseph , Yiu Glenn , Morse Lawrence S. 
Published: July 2017

Purpose: To evaluate the efficacy of micropulse laser in the early treatment of diabetic macular edema (DME) and its associated burden of anti-vascular endothelial growth factor (VEGF) injections. Methods: This retrospective comparative study compared a group of 19 eyes with DME treated with micropulse laser to a matched control group of 19 eyes with DME treated with ranibizumab injections without micropulse laser. Recorded parameters included previous medical and ocular history, previous and subsequent ranibizumab injections administered for DME, visual acuity (VA), central macular thickness throughout the follow-up period, and the occurrence of any complications. Results: The improvement in VA was comparable in both groups, at 12 months and at the final follow-up. Patients treated with micropulse laser required significantly fewer ranibizumab injections than their controls, both at 12 months (1.7 ± 2.3 vs 5.6 ± 2.1) and by the end of the follow-up (2.6 ± 3.3 vs 9.3 ± 5.1) (p<0.001 for both). No complications related to the micropulse laser were encountered. Conclusions: Micropulse laser is a safe and effective treatment for DME, which may achieve comparable improvement in VA along with a significant reduction in the burden of anti-VEGF injections. We suggest a treatment approach for its inclusion in the early stages of DME.
Intraoperative Fluoroscopy with a Direct Anterior Approach Reduces Variation in Acetabular cup Abduction Angle
Authors: Goodman Gens P. , Goyal Nitin , Parks Nancy L. , Hopper Robert H. , Hamilton William G. 
Published: July 2017

Introduction The purpose of this study was to compare acetabular cup position for 2 cohorts of total hip arthroplasty (THA) patients who had a direct anterior approach. Methods 100 THA cases were performed with an anterior approach using intraoperative fluoroscopy (IF) to aid in cup positioning. Another group of 100 cases underwent THA with an anterior approach without the use of any fluoroscopy. Postoperative abduction and anteversion angles were measured using Martell's hip analysis software. Results Mean abduction angle was 43.2° (standard deviation (SD) = 4.5°) for the IF group versus 37.5°(SD = 7.4°) for cases without IF (p<0.001). 18% more cases with IF fell within the Lewinnek safe zone (p<0.001); however, a similar number of cases had over 50° of abduction. The mean anteversion angles of the two groups were also significantly different (IF 21.8° vs. 24.9°) (p<0.01). Conclusions There was significantly less variation in cup position among the cases using IF with regards to abduction.
Contamination Risk of Synovial Biopsy Cultures in Total Hip Arthroplasty: A Prospective Review of 100 Cases
Authors: Pattyn Christophe , De Bo Thomas , Anthonissen Joris , Willekens Philippe , Claeys Geert , Audenaert Emmanuel A. 
Published: July 2017

Introduction Cultures of deep synovial biopsies remain an important tool in diagnosing periprosthetic joint infection, a devastating complication following total hip arthroplasty (THA). Recent reports of unexpected positive intraoperative cultures in aseptic revision arthroplasty, however, challenge the validity and interpretation of these cultures. The aim of this study was to evaluate the contamination risk of synovial biopsy cultures collected intraoperatively during primary THA of healthy subjects. Methods Synovial biopsies for culture were collected during primary total hip arthroplasty procedures from 100 consecutive cases. The synovial biopsies were taken within the first 15 minutes after skin incision. Biopsy specimen were cultured on 4 different media for 8 or 15 days. Positive cultures were identified using Maldi-Tof spectrometry. Results 16 cultures yielded a bacterium, suggesting a false positive result of 16%. The mean time for the cultures to become positive was 6.29 days (standard deviation [SD] 3.90) with a maximum of 15 days. Proprionibacterium acnes and Staphylococcus epidermidis were most commonly cultured with 6 positive results for both bacteria. Conclusions Our study yielded a 16% false positive rate in cultures of synovial biopsy taken during primary total hip arthroplasty of healthy subjects, suggesting that contamination risk of these synovial biopsy cultures may be larger than assumed by clinicians.
CPR, ECLS, BVAD and Successful Heart Transplantation within 2 Months: A Single-centre Case Series in Two Young, High-urgency Listed Patients
Authors: Schmidt Anna K. , Saeed Diyar , Mehdiani Arash , Sowinski Bozena , Westenfeld Ralf , Akhyari Payam , Lichtenberg Artur , Boeken Udo 
Published: July 2017

Introduction In times of organ shortage, death while on the heart waiting-list still represents a major problem. As a consequence, bridging to transplant as well as the decision when to escalate therapy play a very important role. Methods and results We report on two young patients with dilated cardiomyopathy and acute decompensation who were successfully bridged to heart transplantation with both left and temporary right ventricular assist devices in just 2 months. Conclusions As a permanent biventricular assist device (BVAD) would have definitely impaired the patients' outcome after HTX, we decided to implant an LVAD with a temporary RVAD. In our opinion, this represents a suitable strategy to reduce mortality in HU-listed patients with acute deterioration of cardiac pump function and should be further evaluated in future studies.
Factors Causing Loss of Normal Doppler Waveform of the Left Internal Jugular Vein: Evaluation on Chest Computed Tomography
Authors: Ku Min Cheol , Song Myung Gyu , Seo Tae-Seok , Kang Eun Young , Yong Hwan Seok , Lee Jae Wook 
Published: July 2017

Purpose To evaluate the presence and causes of left brachiocephalic vein (LBCV) steno-occlusive lesions in patients with loss of normal waveform in Doppler ultrasound of the left internal jugular vein (LIJV). Materials and Methods We performed Doppler ultrasound of both internal jugular veins in 1912 patients who received an implantable venous access port from August 2013 to January 2016. Among them, 106 patients showed loss of normal Doppler waveforms of the LIJV (56 men and 50 women; mean age, 61.4 ± 11.6 years). We retrospectively analyzed the presence and causes of the LBCV steno-occlusive lesions on contrast-enhanced chest computed tomography (CT) images. Results LBCV steno-occlusive lesions were present in 82 patients (77.4%). The causes of these lesions were anatomic structures (n = 70, 85.4%), tumorous lesions (n = 11, 13.4%), and thrombus (n = 1, 1.2%). The anterior anatomic structures to the LBCV causing stenosis were bony structures (n = 50), right upper lobe (n = 11), and mediastinal fat (n = 9). The posterior anatomic structures to the LBCV resulting in stenosis were right brachiocephalic artery (n = 58), left common carotid artery (n = 7), and aortic arch (n = 5). The tumorous lesions resulting in stenosis were mediastinal lymph node (n = 5), thymic lesions (n = 3), lymphoma (n = 1), lung cancer (n = 1), and bone tumor (n = 1). Conclusions It is necessary to suspect steno-occlusive lesion of the LBCV from various causes and to use caution when performing central venous catheterization in cases with loss of a normal Doppler waveform.
Lancisi’s sign and central venous catheter tip position: a case report
Authors: Vigo Valentina , Lisi Piero , Galgano Giuseppe , Lomonte Carlo 
Published: July 2017

Introduction: Valvular disease and pulmonary hypertension are common conditions in haemodialysis patients. In presence of tricuspid regurgitation, an increased retrograde blood flow into the right atrium during ventricle systole results in a typical modification of the normal venous waveform, creating a giant c-v wave. This condition clinically appears as a venous palpable pulsation within the internal jugular vein, also known as Lancisi’s sign. Case report: An 83-year-old woman underwent haemodialysis for 9 years. After arteriovenous fistula thrombosis, a right internal jugular vein non-tunnelled central venous catheter (CVC) was placed. About one month later, the patient was referred to our facility for the placement of a tunnelled CVC. Neck examination revealed an elevated jugular venous pulse, the Lancisi’s sign. Surprisingly, chest x-ray posteroanterior view showed the non-tunnelled catheter tip in correspondence with the right ventricle. She underwent surgery for temporary to tunnelled CVC conversion using the same venous insertion site (Bellcath®10Fr-length 25 cm to Mahurkar®13.5Fr-length 19 cm). In the postoperative period, we observed a significant reduction of the jugular venous pulse. Discussion: The inappropriate placement of a 25-cm temporary CVC in the right internal jugular vein worsened the tricuspid valve regurgitation, which became evident by the Lancisi’s sign. Removal of the temporary CVC from the right ventricle resulted in improved right cardiac function. Safe approaches recommended by guidelines for the CVC insertion technique and for checking the tip position should be applied in order to avoid complications.
Sexual Health, Adherence to Mediterranean Diet, Body Weight, Physical Activity and Mental State: Factors Correlated to Each Other
Authors: Della Camera Pier A. , Morselli Simone , Cito Gianmartin , Tasso Giovanni , Cocci Andrea , Laruccia Nicola , Travaglini Fabrizio , Del Fabbro Dario , Mottola Antonio R. , Gacci Mauro , Serni Sergio , Carini Marco , Natali Alessandro 
Published: July 2017

Introduction Mediterranean diet has shown a protective role against cardiovascular disease, diabetes, cancer onset, microvascular damage and dementia in many trials. Our purpose is the assessment of a correlation between physical activity, Mediterranean diet, body mass index (BMI), depression and erection disorder (ED). Methods After having signed disclaimer to the study participation, we administered the IIEF 15 questionnaire (International Index of Erectil Function), the Hamilton questionnaire for major depression, the Med-Diet Questionnaire, the Ipaq Questionnaire (International Index of Physical Activity) to 245 patients and calculated the BMI. Only 141 were eligible. We excluded patients with a history of smoking, with obesity from the second grade to rise, anorexia, hyperlipidemia, Induratio Penis Plastica, diabetes, cardiovascular and neurological disease, hypogonadism, prostatitis, diabetes, hypertension, psychiatric diseases and the history of radical prostatectomy and finally age >72 and <50 years or who were taking cholesterol-lowering medication. Patients were divided into two groups: 65 patients without ED and 76 patients with ED. Results We found a statistically difference in BMI between the groups. Adherence to Med-Diet showed a significant difference between the two groups at Student t-test and the Chi-square test. The Ipaq test and Hamilton test did not show statistical differences between the two groups neither for Student t-test nor for Chi-square test, but high levels seem to be protective factors. Conclusions Body weight and a healthy diet are protective factors against the ED, more than a sufficient physical activity. Depression has shown only a worsening tendency of the erection.
El testimonio del momento inasible. Remembranza y transfiguración de la tradición poética china en Irás y no volverás de José Emilio Pacheco (1973)
Authors: Cervera Salinas Vicente 
Published: July 2017

La poesía hispanoamericana, y más concretamente la mexicana, entra brillantemente en la década de los años setenta con un poemario central en la trayectoria lírica de José Emilio Pacheco, Irás y no volverás. Si bien fue publicado en edición príncipe por Fondo de Cultura Económica en 1973, los textos que lo integran abarcan un lapso temporal de composición desde 1969 hasta 1972, según indicación expresa del propio autor. Como bien sabemos, Pacheco gustó de publicar sus poemas en ediciones completas que, bajo el título de Tarde o temprano (editado por primera vez en 1980), iban ampliando su índice con los subsiguientes poemarios que el autor presentaba de manera independiente. En estas colecciones (la de 1980, la de 2000, ambas mexicanas) y la española de 2010 (que reproduce la mexicana de Era, de 2009) Pacheco introducía siempre, en su afán por precisar cuestiones relativas al tiempo y sus mutaciones, las fechas no sólo de las ediciones primeras de sus poemarios, sino las relativas al arco temporal de escritura o redacción que abarcaba cada uno de ellos.
Las entrevisiones de Fina García Marruz: a propósito del poemario Viaje a Nicaragua (1987)
Authors: Rodríguez Gutiérrez Milena 
Published: July 2017

Este artículo propone un acercamiento a Viaje a Nicaragua (1987), único poemario que firmaron juntos los poetas origenistas cubanos Cintio Vitier y Fina García Marruz, abordando el contexto político y cultural en que el libro se escribe, las motivaciones que propician su escritura, su temática y propuestas estéticas y políticas y sus vínculos con el exteriorismo de Ernesto Cardenal y, de manera particular, ensaya una aproximación a la poética singular de Fina García Marruz y a sus entrevisiones a partir del análisis y comentario de varios poemas incluidos en el libro.
La poesía de Victoria Guerrero, un arte de la incomplacencia
Authors: Salazar Ina 
Published: July 2017

Este artículo presenta la obra de Victoria Guerrero (Lima, 1968) una de las voces más singulares y potentes de la actual poesía peruana, postulando que la escritura que propone, nutrida por la energía y las conquistas de las vanguardias y neovanguardias, por sus sueños de comunión de arte y vida, pero desde el desencanto y la resistencia, únicas líneas de conducta y de palabra en el naciente siglo XXI peruano y globalizado produce nuevas coordenadas para la poesía en la conjugación de la exigencia de una conciencia ético-política y de una afirmación genérica.
PRODUÇÃO E COMPOSIÇÃO DOS RESÍDUOS DE SERVIÇO DE SAÚDE EM HOSPITAIS DO VALE DO ITAJAÍ
Authors: Spindola Sherelee Ribeiro , Moura João Marcos Bosi Mendonça de 
Published: July 2017

Conhecer a quantidade e a composição dos resíduos de serviço de saúde (RSS) é fundamental para a implementação de planos e sistemas de gestão nos estabelecimentos geradores. Por isso, objetivou-se analisar a produção e composição dos RSS de hospitais da região do vale do Itajaí, estado de Santa Catarina, Brasil. Treze hospitais foram analisados e a quantidade de RSS foi correlacionada com o número de leitos ocupados. A taxa média de produção de RSS foi de 6,5 kg.leito ocupado-1.dia-1, com 5,4 kg.leito ocupado-1.dia-1 de resíduos do grupo D - comum não recicláveis -, 0,4 kg.leito ocupado-1.dia-1 de resíduos recicláveis e 0,7 kg.leito ocupado-1.dia-1 de resíduos perigosos (grupo A, B e E). A correlação entre a produção de RSS e o número de camas ocupadas foi alta, com um coeficiente de correlação de 0,99 tanto para resíduos comuns quanto recicláveis, bem como para resíduos perigosos. A composição dos RSS é constituída por 49% de resíduos orgânicos, 23% de recicláveis e 28% de perigosos. Os resultados obtidos podem subsidiar os gestores no monitoramento e implantação de melhorias das políticas ambientais dos hospitais, além de poderem contribuir na redução dos custos operacionais relacionados aos resíduos.
Constraints to do realistic modeling of the electric field ahead of the tip of a lightning leader
Authors: Skeltved Alexander Broberg , Østgaard Nikolai , Mezentsev Andrew , Lehtinen Nikolai , Carlson Brant 
Published: July 2017

AbstractSeveral computer models exist to explain the observation of terrestrial gamma‐ray flashes (TGFs). Some of these models estimate the electric field ahead of lightning leaders and its effects on electron acceleration and multiplication. In this paper, we derive a new set of constraints to do more realistic modeling. We determine initial conditions based on in situ measurements of electric field and vertical separation between the main charge layers of thunderclouds. A maximum electric field strength of 50 kV/cm at sea level is introduced as the upper constraint for the leader electric field. The threshold for electron avalanches to develop of 2.86 kV/cm at sea level is introduced as the lower value. With these constraints, we determine a region where acceleration and multiplication of electrons occur. The maximum potential difference in this region is found to be ∼52 MV, and the corresponding number of avalanche multiplication lengths is ∼3.5. We then quantify the effect of the ambient electric field compared to the leader field at the upper altitude of the negative tip. Finally, we argue that only leaders with the highest potential difference between its tips (∼600 MV) can be candidates for the production of TGFs. However, with the assumptions we have used, these cannot explain the observed maximum energies of at least 40 MeV. Open questions with regard to the temporal development of the streamer zone and its effect on the shape of the electric field remain.
Determination of the major moisture sources of cumulative effect of torrential rain events during the preflood season over South China using a Lagrangian particle model
Authors: Chu Qu‐cheng , Wang Qi‐guang , Feng Guo‐lin 
Published: July 2017

AbstractIn this paper, reanalysis data collected by ERA‐Interim 4 times daily from 1979 to 2014 are used to analyze the main atmospheric moisture sources of cumulative effect of torrential rain (CETR) events during the preflood season (1 April to 30 June) over South China. Using a Lagrangian particle dispersion model—the Hybrid Single‐Particle Lagrangian Integrated Trajectory model—the major atmospheric moisture sources of 66 CETR events for the period of 1979–2014 are identified and compared. In this study, five atmospheric moisture sources—the land area, Indian Ocean, Pacific Ocean, South China Sea, and South China—are defined, and the effects of these moisture sources on preflood season CETR events over South China are quantitatively estimated. The results indicate that during the preflood season, Indian Ocean water vapor transport accounts for 30% of the atmospheric moisture generated in CETR events, thus dominating precipitation over South China. The water vapor transport from the land area (14%), western Pacific Ocean (10%), South China Sea (25%), and South China (20%) also play important roles in preflood season CETR events. Furthermore, a significant transition in water vapor transport occurred in the 1990s, during which water vapor transport from the Indian Ocean increased significantly, while water vapor transport from the western Pacific Ocean significantly declined. In addition, a significant positive anomaly in Pacific Ocean and South China Sea water vapor transport spurred CETR events in the east, while a significant positive anomaly in Indian Ocean water vapor transport facilitated CETR events in the west.