bluuebunny/crossref_metadata_2025_split huggingface dataset:
Pré-eclâmpsia em período puerperal
Authors: Brito Neto Raimundo Marcial de , Ramos Alex Pereira , Zamais Laíse Neves , Carvalho Taynara Antunes de , Souza Maria Cristina Almeida de , Côrtes Júnior João Carlos de Souza 
Published: May 2020

A pré-eclâmpsia, uma complicação frequente da gravidez, é uma das principais causas maternas de morbidade e da mortalidade perinatal. Um grande avanço na classificação da pré-eclâmpsia foi a sua subdivisão em variantes precoces (<34 semanas de gestação) e tardias. Apesar de apresentarem maior prevalência no período gestacional, o aparecimento dessas intercorrências em período pós-parto e puerperal não deve ser negligenciado tendo em vista a sua importância clínica. Este artigo é um relato de caso de pré-eclâmpsia tardia em uma paciente de 37 anos, puérpera, que deu entrada no serviço de emergência hospitalar com quadro de edema agudo de pulmão, dispneia, estado torporoso e cianose periférica. O diagnóstico foi possível através de aferição de pressão arterial sistêmica e dosagem de proteinúria de 24h, tendo sido descartadas outras complicações possíveis após outros exames laboratoriais. O quadro foi estabilizado com uso de nitroprussiato de sódio e uso de pressão positiva contínua nas vias aéreas (do inglês: continuous positive airway pressure–CPAP) para correção de cianose. Logo depois do diagnóstico de pré-eclâmpsia, foi adicionado à prescrição o sulfato de magnésio para profilaxia de eclâmpsia. Após sete dias de internação sem demais intercorrências, a paciente recebeu alta.
Ellsworth Huntington: considerações sobre a correspondência referente ao mapa de “distribuição da civilização” da obra Civilization and climate
Authors: Coscioni Fernando José 
Published: May 2020

Os esforços intelectuais de Ellsworth Huntington (1876-1947), autor que sofreu significativa influência do Darwinismo Social, cumpriram um papel decisivo para fortalecer a Geografia Humana estadunidense no início do século XX. O artigo busca contribuir para a clarificação de um importante episódio ocorrido durante o período de expansão da Geografia universitária nos EUA que foi a elaboração, por esse geógrafo, de um mapa de “distribuição da civilização” que buscava hierarquizar as regiões do mundo em uma escala de 0 a 10. O mapa foi publicado em um dos capítulos da obra “Civilization and Climate”, que teve a sua primeira edição em 1915 e uma terceira edição estendida em 1924. Essa obra é uma das primeiras tentativas mais sistemáticas de discussão de uma epistemologia geográfica específica e de elaboração de uma teoria geográfica da história que foram produzidas nos EUA, fato que confere a ela importância bastante singular na história da Geografia.
Palavras-chave: História da Geografia, Darwinismo Social, Geografia Humana nos EUA, Ellsworth Huntington.
The Impact of Open Access Mandates on Invention
Authors: Bryan Kevin A. , Ozcan Yasin 
Published: May 2020

Abstract
How do barriers to the diffusion of academic research affect innovation? In 2008, the National Institutes of Health (NIH) mandated free online availability of funded research. This policy caused a 50 percentage point increase in free access to funded articles. We introduce a novel measure, in-text patent citations, to study how this mandate affected industry use of academic science. After 2008, patents cite NIH-funded research 12% to 27% more often. Nonfunded research, funded research in journals unaffected by the mandate, and academic citations see no change. These estimates are consistent with a model of search for useful knowledge. Inefficiency caused by academic publishing may be substantial.
Estimating the Production Function Under Input Market Frictions
Authors: Shenoy Ajay 
Published: May 2020

Abstract
Behind many production function estimators lies a crucial assumption that the firm's choice of intermediate inputs depends only on observed choices of other inputs and on unobserved productivity. This assumption fails when market frictions distort the firm's input choices. I derive a test for the assumption, which is rejected in several industries. Using weak identification asymptotics, I show that when the assumption fails, a simplified dynamic panel estimator can be used instead of choice-based methods because it requires choices to be distorted. I propose criteria for choosing between estimators, which in simulations yield lower error than either estimator alone.
The Dynamic Impact of FX Interventions on Financial Markets
Authors: Menkhoff Lukas , Rieth Malte , Stöhr Tobias 
Published: May 2020

Abstract
Evidence on the effectiveness of foreign exchange (FX) interventions is either limited to short horizons or hampered by debatable identification. We address these limitations by identifying a structural vector autoregressive model for the daily frequency with an external instrument. Generally we find, for freely floating currencies, that FX intervention shocks significantly affect exchange rates and that this impact persists for months. The signaling channel dominates the portfolio channel. Moreover, interest rates tend to fall in response to sales of the domestic currency, whereas stock prices of large (exporting) firms increase after devaluation of the domestic currency.
The Value of Reputation in Trade: Evidence from Alibaba
Authors: Chen Maggie X. , Wu Min 
Published: May 2020

Abstract
We examine the role of an online reputation mechanism in international trade by exploring T-shirt exports on Alibaba. Exploiting rich transaction data and features of search and rating algorithms, we show that exporters displaying a superior reputation perform significantly better than peers with nearly identical true ratings and observables, and the value of reputation rises with the level of information friction and the specificity of information. We develop a dynamic reputation model with heterogeneous cross-country information friction to quantify the effect of the reputation mechanism and find a 20% increase in aggregate exports fueled by a market reallocation towards superstars.
Imogontes, Ciriaco d’Ancona, and a Curious Collection of Words
Authors: Welsh Jarrett T. 
Published: May 2020

Abstract
An incomplete Latin glossary attributed to ‘Imogontes’ in the only known manuscript (Vatican City, Biblioteca Apostolica Vaticana, Urb.lat. 452) is, in fact, a copy of a text that Ciriaco d’Ancona found at Monza on 27 November, 1442. From the transmission histories of the other texts found with ‘Imogontes’, I suggest that Ciriaco put two copies of the text into circulation; although those copies travelled widely and in the company of other texts that were frequently copied, they drew almost no interest whatsoever from later readers. Although ‘Imogontes’ turns out to be a ghost, the text itself gives yet more information about the interests and obsessions of Ciriaco.
Building trust and facilitating goals of care conversations: A qualitative study in people with heart failure receiving home hospice care
Authors: Baik Dawon , Russell David , Jordan Lizeyka , Matlock Daniel D , Dooley Frances , Masterson Creber Ruth 
Published: May 2020

Background: Despite a majority of persons receiving hospice care in their homes, there are gaps in understanding how to facilitate goals of care conversations between persons with heart failure and healthcare providers. Aim: To identify barriers and facilitators which shape goals of care conversations for persons with heart failure in the context of home hospice. Design: A qualitative descriptive study design was used with semi-structured interviews. Setting/participants: We conducted qualitative interviews with persons with heart failure, family caregivers, and interprofessional healthcare team members at a large not-for-profit hospice agency in New York City between March 2018 and February 2019. Results: A total of 39 qualitative interviews were conducted, including with healthcare team members (e.g. nurses, physicians, social workers, spiritual counselors), persons with heart failure, and family caregivers. Three themes emerged from the qualitative interviews regarding facilitators and barriers in goals of care conversations for better decision-making: (1) trust is key to building and maintaining goals of care conversations; (2) lack of understanding and acceptance of hospice inhibits goals of care conversations; and (3) family support and engagement promote goals of care conversations. Conclusion: Findings from this study suggest that interventions designed to improve goals of care conversations in the home hospice setting should focus on promoting understanding and acceptance of hospice, family support and engagement, and building trusting relationships with interprofessional healthcare teams.
Supporting Pediatric Patients and Their Families at the End of Life: Perspectives From Bereaved Parents
Authors: Sedig Laura K. , Spruit Jessica L. , Paul Trisha K. , Cousino Melissa K. , McCaffery Harlan , Pituch Kenneth , Hutchinson Raymond 
Published: May 2020

Background: Cancer remains the leading cause of death by disease for children in the United States. It is imperative to optimize measures to support patients and families facing the end of a child’s life. This study asked bereaved parents to reflect on their child’s end-of-life care to identify which components of decision-making, supportive services, and communication were helpful, not helpful, or lacking. Methods: An anonymous survey about end-of-life experiences was sent to families of children treated at a single institution who died of a malignancy between 2010 and 2017. Results: Twenty-eight surveys were returned for a 30.8% response rate. Most of the bereaved parents (61%) reported a desire for shared decision-making; this was described by 52% of families at the end of their child’s life. There was a statistically significant association between how well death went and whether the parental perception of actual decision-making aligned with desired decision-making ( P = .002). Families did not utilize many of the supportive services that are available including psychology and psychiatry (only 22% used). Respondents felt that additional services would have been helpful. Conclusions: Health care providers should strive to participate in decision-making models that align with the preferences of the patient and family and provide excellent communication. Additional resources to support families following the death of a child should be identified for families or developed and funded if a gap in available services is identified.
Outer retinal tubulations in central serous chorioretinopathy associated with choroidal neovascularisation
Authors: Mandadi Spoorti Krishna Reddy , Iovino Claudio , Sacconi Riccardo , Querques Giuseppe , Peiretti Enrico , Singh Sumit Randhir , Chhablani Jay 
Published: May 2020

Aim To report the prevalence and characteristics of outer retinal tubulations in eyes with choroidal neovascularisation associated with chronic central serous chorioretinopathy. Methods Retrospective case series which included evaluation of optical coherence tomography B-scans and enface optical coherence tomography scans of eyes with choroidal neovascularisation associated with chronic central serous chorioretinopathy. The characteristics of outer retinal tubulations such as number, shape and distribution were noted. The location of the outer retinal tubulations was correlated with autofluorescence. Results Outer retinal tubulations were detected in 9.1% of the eyes (9 out of 87 eyes). The average number of outer retinal tubulations in each eye was 4.7 ± 4.6. Spheroidal outer retinal tubulations were more common than the branching tubules. Although presence of outer retinal tubulations was mostly associated with inactive disease, two eyes had coexistent subretinal fluid. Conclusion Outer retinal tubulations associated with choroidal neovascularisation in chronic central serous chorioretinopathy, though less frequent, when present are more numerous, mostly extrafoveal and more spheroidal in shape compared to outer retinal tubulations associated with age-related macular degeneration and other degenerative conditions.
Experimental study of the POP technique: focus on the physical basis of the process
Authors: Royon Laurent , Merckx Jacques , Herbaut Rémi , Brunet Philippe , Dupont Christian , Dantan Philippe , Flaud Patrice , Guiffant Gérard 
Published: May 2020

Introduction: Central or peripheral vascular access devices have been in use for many decades. However, despite adequate care and maintenance, complete occlusion may occur, and its impact cannot be overlooked. A new procedure using a percussion technique has been published and referred as ‘the POP technique’. Methods: A hydrodynamic bench was used permitting both the recording of the movement of the piston with a fast camera and the pressure variations in the polyurethane and silicone catheters while connected to 2- and 3-piece syringes. Results: The results are twofold. First the upward movement of the piston leads to the installation of a saturation vapour pressure in the body of the syringe. During this sequence, the clot is submitted to a force of aspiration. Then the release of the plunger leads to a pulse pressure whose dynamics and intensity are dependent of the types of syringes and catheters. Conclusions: The experiments bring to light the importance of practical features such as the orientation of the syringe and the nature of the polyurethane or silicone catheters. Then the analysis enables the definition of practical rules for safe practice of the POP technique. This study will impact clinicians as many may be tempted to use the technique in hope to resolve the occlusion safely, in a timely manner.
Venous distensibility is more important than venous diameter in primary survival of autogenous radiocephalic arteriovenous fistulas
Authors: Hou Guocun , Hou Yi , Sun Xiuli , Yin Na , Feng Guozhen , Yan Yonghong , Guangyi Li 
Published: May 2020

Background: Many studies suggested that the optimal cephalic vein diameter for wrist radio-cephalic arteriovenous fistula construction should be at least 2 mm to predict successful maturation and primary patency. However, our experience has shown that many patients with smaller cephalic vein diameter (≤2 mm) in the neutral state (without a tourniquet) also have good clinical outcomes. The aim of this study was to identify predictors that affect primary survival of new wrist radio-cephalic arteriovenous fistula in patients with cephalic vein diameter ≤2 mm. Methods: We performed a retrospective review of 50 patients with preoperative cephalic vein diameters ≤2 mm in the neutral state who underwent wrist radio-cephalic arteriovenous fistula construction between September 2016 and October 2019. Internal diameters of the cephalic vein and radial artery, venous distensibility, peak systolic velocity, and resistance index of the radial artery were determined by ultrasound examination before wrist radio-cephalic arteriovenous fistula placement. Patients were divided into two groups: failure and survival. Results: The radio-cephalic arteriovenous fistula survival rate was 68% from the time of radio-cephalic arteriovenous fistula creation until the end of the study. Univariate analysis showed that larger venous distensibility (p < 0.001), non-diabetic kidney disease (p = 0.009), and slower peak systolic velocity of the radial artery (p = 0.033) were predictive factors for primary radio-cephalic arteriovenous fistula survival. Multivariate regression analysis revealed good venous distensibility (odds ratio = 9.637, 95% confidence interval = 1.893–49.050, p = 0.006) and non-diabetic kidney disease (odds ratio = 0.148, 95% confidence interval = 0.033–0.660, p = 0.012) to be independent predictors for primary radio-cephalic arteriovenous fistula survival. Receiver operating characteristic analysis showed that venous distensibility >0.52 mm (sensitivity: 70.6%, specificity: 68.8%) was the best cut-off value to predict primary radio-cephalic arteriovenous fistula survival. Conclusion: When cephalic veins with diameter ≤2 mm are found, venous distensibility should be used to aid in the surgery decision-making process. The outcome of wrist radio-cephalic arteriovenous fistula survival would be significantly improved through the use of cephalic vein with venous distensibility >0.52 mm.
Chinesization of the quality of life assessment, venous device-port, and its reliability and validity tests for patients with breast cancer
Authors: Liu Ye , Xu Lei , Jiang Min , Chen Bo , Jing Liwei , Zhang Lei , Su Peng , Jin Feng , Mao Xiaoyun 
Published: May 2020

Objective: To translate the assessment item sets of the Canadian version of the quality of life assessment, venous device-port for breast cancer patients with chest and arm ports (i.e. different implanting sites) into Chinese version, and to conduct a test of reliability and validity for it. Methods: According to the Brislin translation model, quality of life assessment, venous device-port underwent literal and back translations, and the Chinese version of quality of life assessment, venous device-port was preliminarily revised by consulting an expert and a preliminary test. A total of 270 cancer patients undergoing chemotherapy were assessed during the use of ports, and the reliability and the validity of the Chinese version of quality of life assessment, venous device-port scale were then tested. Results: The scale consisted of 23 yes/no items and seven numerical rating scales. The total Cronbach’s α coefficient of the scale was 0.829, and each item ranged from 0.812 to 0.845. The item-level content validity index was 0.67–1.00, and the scale-level content validity index/average and the scale-level content validity index/universal agreement were 0.98 and 0.90, respectively. The correlation coefficient of the repeated measurement results of the scale was 0.554 ( p < 0.01). Exploratory factor analysis showed that the cumulative explained variance of five common factors was 64.197%. Conclusion: The Chinese version of quality of life assessment, venous device-port scale is an effective assessment tool for quality of life with good reliability and validity in breast cancer patients with different implantation sites for totally implanted venous access devices in northern China.
Barista’s fracture: a new occupational hazard
Authors: Yusuf Baasil Syed , Segaren Neil , Segaren Nicholas , Di Mascio Livio 
Published: May 2020

Lesson Stress fracture of the clavicle is a rare injury usually occurring in high-level athletes. It is typically a result of repetitive sporting activity or unusual strain. We present the first case of an occupational clavicle stress fracture in a young female barista. The patient initially presented with insidious onset clavicular pain. There was no history of trauma, and an undisplaced fracture was present on the plain radiograph but overlooked by the emergency physicians. Two weeks later, the patient presented again with worsening symptoms, and a displaced fracture of the clavicle was diagnosed on plain radiograph. A thorough occupational history revealed the cause of her pain, which was the mechanical activity of coffee tamping and the fracture went on to unite with no further complications. No other cause was found on investigations including magnetic resonance imaging. The fracture healed with cessation of coffee tamping. This case highlights a previously unrecognised occupational hazard of coffee tamping as a potential cause of stress fracture of clavicle.
The Impact of COVID-19 Pandemic on Spine Surgeons Worldwide
Authors: Louie Philip K. , Harada Garrett K. , McCarthy Michael H. , Germscheid Niccole , Cheung Jason P. Y. , Neva Marko H. , El-Sharkawi Mohammad , Valacco Marcelo , Sciubba Daniel M. , Chutkan Norman B. , An Howard S. , Samartzis Dino 
Published: May 2020

Study Design: Cross-sectional, international survey. Objectives: The current study addressed the multi-dimensional impact of COVID-19 upon healthcare professionals, particularly spine surgeons, worldwide. Secondly, it aimed to identify geographical variations and similarities. Methods: A multi-dimensional survey was distributed to surgeons worldwide. Questions were categorized into domains: demographics, COVID-19 observations, preparedness, personal impact, patient care, and future perceptions. Results: 902 spine surgeons representing 7 global regions completed the survey. 36.8% reported co-morbidities. Of those that underwent viral testing, 15.8% tested positive for COVID-19, and testing likelihood was region-dependent; however, 7.2% would not disclose their infection to their patients. Family health concerns were greatest stressor globally (76.0%), with anxiety levels moderately high. Loss of income, clinical practice and current surgical management were region-dependent, whereby 50.4% indicated personal-protective-equipment were not adequate. 82.3% envisioned a change in their clinical practice as a result of COVID-19. More than 33% of clinical practice was via telemedicine. Research output and teaching/training impact was similar globally. 96.9% were interested in online medical education. 94.7% expressed a need for formal, international guidelines to manage COVID-19 patients. Conclusions: In this first, international study to assess the impact of COVID-19 on surgeons worldwide, we identified overall/regional variations and infection rate. The study raises awareness of the needs and challenges of surgeons that will serve as the foundation to establish interventions and guidelines to face future public health crises.
Potential use of Kebilian clay reserves(southern Tunisia)for the production of geopolymer materials
Authors: Ounissi Chedlia , Mahmoudi Salah , Valentini Luca , Bennour Ali , Garbin Enrico , Artioli Gilberto , Montacer Mabrouk 
Published: May 2020

AbstractThe aim of this study was to help drive the Tunisian construction industry towards a more sustainable approach given the existence of abundant local raw material deposits that could be exploited for the production of low-CO2binders. Various clay sediments from the Kebili region (southern Tunisia) were characterized by chemical analysis, X-ray diffraction, thermal analysis and geotechnical tests to determine their suitability for the preparation of geopolymer binders. The clays consist of illite and kaolinite with other accessory minerals. To test the possibility of using these materials as precursors for the production of low-CO2and low-cost geopolymers, the raw samples were calcined and activated by addition of solid sodium silicate. Compressive strength tests performed on four alkali-activated clays show that promising mechanical performance may be achieved, with mechanical strength values as high as 25 MPa after 7 days, depending on the clay composition. The mechanical strength is related to the SiO2:Al2O3and Al2O3:(NaO2+ K2O) ratios. Careful selection of the raw materials is, therefore, an essential step in the exploitation of clay deposits to be used for the production of ecological materials such as geopolymers.