bluuebunny/crossref_metadata_2025_split huggingface dataset:
Deep learning models for the prediction of small-scale fisheries catches: finfish fishery in the region of “Bahía Magadalena-Almejas”
Authors: Cavieses Núñez Ricardo Alberto , Ojeda Ruiz de la Peña Miguel Ángel , Flores Irigollen Alfredo , Rodríguez Rodríguez Manuel 
Published: May 2018

Abstract
Globally, over 80% of fisheries are at maximum sustainable levels or overexploited. However, small-scale fisheries (SSFs) in developing countries play a relevant role in coastal communities’ development with important impacts on the economy. The SSFs are normally multi-specific and due to the lack of data, studying them by simulation poses an important challenge especially forecasting models. These models are necessary to support management decisions or develop sustainable fisheries; therefore, models based on Deep Learning were proposed to forecast SSFs catch, using data from official catch landing reports (OCLRs), satellite images, and oceanographic data. The finfish fishery in Bahía Magdalena-Almejas (México) was used for the present study. According to an analysis of OCLRs, the target species of major importance in the fishery were identified and selected for the model. The proposed deep learning models used two artificial neural networks structures: non-linear autoregressive neural network and long-short term memory network, which were designed to assess and forecast monthly catch levels of Paralabrax nebulifer and Caulolatilus princeps. Models with a performance efficiency of R &gt; 0.8, MSE &lt; 300 were found, which indicate that the models are applicable in SSF with poor data and multi-specific fishery contexts, at low cost.
Accretion and propeller torque in the spin-down phase of neutron stars: The case of transitional millisecond pulsar PSR J1023+0038
Authors: Ertan Ünal 
Published: May 2018

ABSTRACT
The spin-down rate of PSR J1023+0038, one of the three confirmed transitional millisecond pulsars, was measured in both radio pulsar (radio millisecond pulsar, RMSP) and X-ray pulsar (low-mass X-ray binary, LMXB) states. The spin-down rate in the LMXB state is only about 27 per cent greater than the spin-down rate in the RMSP state. The inner disc radius, rin, obtained recently by Ertan for the propeller phase, which is close to the co-rotation radius, rco, and insensitive to the mass-flow rate, can explain the observed torques together with the X-ray luminosities, Lx. The X-ray pulsar and radio pulsar states correspond to accretion with spin-down (weak-propeller) and strong-propeller situations, respectively. A several times increase in the disc mass-flow rate takes the source from the strong propeller with a low Lx to the weak propeller with a higher Lx powered by accretion on to the star. The resultant decrease in rin increases the magnetic torque slightly, explaining the observed small increase in the spin-down rate. We have found that the spin-up torque exerted by accreting material is much smaller than the magnetic spin-down torque exerted by the disc in the LMXB state.
Cool to be Smart or Smart to be Cool? Understanding Peer Pressure in Education
Authors: Bursztyn Leonardo , Egorov Georgy , Jensen Robert 
Published: May 2018

AbstractWe model and test two school-based peer cultures: one that stigmatizes effort and one that rewards ability. The model shows that either may reduce participation in educational activities when peers can observe participation and performance. We design a field experiment that allows us to test for, and differentiate between, these two concerns. We find that peer pressure reduces takeup of an SAT prep package virtually identically across two very different high school settings. However, the effects arise from very distinct mechanisms: a desire to hide effort in one setting and a desire to hide low ability in the other.
Environmental conditions, not sugar export efficiency, limit the length of conifer leaves
Authors: Han Xiaoyu , Turgeon Robert , Schulz Alexander , Liesche Johannes 
Published: May 2018

Abstract
Most conifer species have needle-shaped leaves that are only a few centimeters long. In general, variation in leaf size has been associated with environmental factors, such as cold or drought stress. However, it has recently been proposed that sugar export efficiency is the limiting factor for conifer needle length, based on the results obtained using a mathematical model of phloem transport. Here, phloem transport rates in long conifer needles were experimentally determined to test if the mathematical model accurately represents phloem transport. The validity of the model’s assumptions was tested by anatomical analyses and sugar quantification. Furthermore, various environmental and physiological factors were tested for their correlation with needle length. The results indicate that needle length is not limited by sugar transport efficiency, but, instead, by winter temperatures and light availability. The identification of factors that influence needle size is instrumental for using this trait as a variable in breeding programs.
Maternal Pulse Pressure and the Risk of Postepidural Complications: A Randomized Controlled Trial
Authors: Lappen J.R. , Myers S.A. , Bolen N. , Mercer B.M. , Chien E.K.S. 
Published: May 2018

(Obstet Gynecol. 2017;130(6):1366–1376)
Neuraxial analgesia results in decreased maternal systemic vascular resistance and increased venous capacitance, which in turn can affect maternal blood pressure (BP) and uteroplacental blood flow. Such hemodynamic changes occur in the setting of constant maternal intravenous (IV) fluid preload. However, evidence supporting IV fluid preloading is conflicting. In the present trial, the authors evaluated whether a larger volume of IV fluid at the time of intrapartum epidural placement for women with a narrow pulse pressure decreased the frequency of postprocedure fetal heart rate (FHR) abnormalities. In addition, the authors assessed whether providing a larger volume of IV co-load to such women would decrease the frequency of maternal hypotension and resuscitative obstetric interventions.
Association of Gestational Weight Gain With Maternal and Infant Outcomes: A Systematic Review and Meta-Analysis
Authors: Goldstein R.F. , Abell S.K. , Ranasinha S. , Misso M. , Boyle J.A. , Black M.H. , Li N. , Hu G. , Corrado F. , Rode L. , Kim Y.J. , Haugen M. , Song W.O. , Kim M.H. , Bogaerts A. , Devlieger R. , Chung J.H. , Teede H.J. 
Published: May 2018

(JAMA. 2017;317:2207–2225)
Excessive and insufficient gestational weight gain have been associated with a variety of adverse maternal and neonatal outcomes. The Institute of Medicine (IOM) has guidelines for gestational weight gain that recommend less weight gain for women with greater body mass index. However, evidence regarding the association between pregnancy outcomes and recommended weight gain based on the IOM guidelines is limited. This systematic review and meta-analysis was performed to investigate the association between gestational weight gain above and below the IOM guidelines and maternal and infant outcomes.
Health and Economic Burden of Preeclampsia: No Time for Complacency
Authors: Li R. , Tsigas E.Z. , Callaghan W.M. 
Published: May 2018

(Am J Obstet Gynecol. 2017;217(3):235–236)
Over the past 30 years, the incidence of preeclampsia has increased. Preeclampsia can have adverse health consequences. Stevens et al found the short-term costs of preeclampsia in the United States health care system in 2012 was $2.18 billion. In their report, administrative data were used to identify preeclampsia and other complications. As a result of using administrative databases, some causes of mild preeclampsia may have been inaccurately coded or misdiagnosed. In order to compute costs, novel approaches were used, but such approaches should be validated. As a leading cause of both maternal and fetal complications, preeclampsia has not received the attention or research it deserves. By quantifying the costs, the public as well as health care professionals can better gauge the scope of the complication. Further study should explore the costs of intervention and cost savings associated with preventing preeclampsia, as well as long-term costs of preeclampsia.
Seven Dangerous Ps of Pregnancy and Challenges of Caring for Pregnant Women With Complex Needs
Authors: Acharya G 
Published: May 2018

(Acta Obstet Gynecol Scand. 2017;96(9):1037–1038)
During pregnancy, women can be at risk of serious complications, especially those women with preexisting conditions and unmet social needs. These complications include preeclampsia, pulmonary embolism, preterm birth, postpartum/peripartum hemorrhage, perineal trauma, perinatal/puerperal sepsis, and psychosis.
Postpartum Tubal Ligation: A Retrospective Review of Anesthetic Management at a Single Institution and a Practice Survey of Academic Institutions
Authors: McKenzie C. , Akdagli S. , Abir G. , Carvalho B. 
Published: May 2018

(J Clin Anesth. 2017;43:39–46)
Postpartum tubal ligation (PPTL) is a procedure frequently performed during the early postpartum period. However, there are limited data regarding optimal anesthetic technique and clinical practice in the United States. Although spinal, epidural, and general anesthesia are all utilized, they have not been comparatively evaluated. Therefore, the authors of the present study reviewed anesthetic techniques utilized for PPTL to determine the rate of successful epidural catheter reactivation, associated characteristics, intraoperative times, and immediate postoperative outcomes of varying techniques.
Antenatal Nutritional Supplementation and Autism Spectrum Disorders in the Stockholm Youth Cohort: Population-based Cohort Study
Authors: DeVilbiss E.A. , Magnusson C. , Gardner R.M. , Rai D. , Newschaffer C.J. , Lyall K. , Dalman C. , Lee B.K. 
Published: May 2018

(BMJ. 2017;359:j4273)
Previous research has suggested that autism spectrum disorders (ASD) may develop antenatally. Maternal nutrition affects neurodevelopment and could be a factor affecting the risk of developing ASD. Population-based studies, however, have produced conflicting results. Studies from the United States and Norway found that maternal folic acid supplementation around the time of conception and during early pregnancy decreased the risk of ASD. A Danish study, though, did not find an association between folic acid or multivitamin supplementation and the risk of ASD. The aim of this population-based cohort study was to establish the association between maternal nutritional supplementation and the risk of ASD with and without intellectual disability in offspring.
Barriers to Collaborative Anesthetic Care Between Anesthesiologists and Nurses on the Labor and Delivery Unit: A Study Using Modified Delphi Technique
Authors: Fung L.Y. , Downey K. , Watts N. , Carvalho J.C.A. 
Published: May 2018

(Can J Anaesth. 2017;64(8):836–844)
Teamwork between anesthesiologists and nurses is very important for patient safety and effective care, particularly in obstetric care. Barriers to effective teamwork between nurses and physicians are varied and can be difficult to identify, but may include lack of role clarity, intimidation and bullying, linguistic or cultural barriers, dependence on electronic systems, poor communication and hesitation to challenge the authority of the physician. The Delphi technique is a survey method used to minimize bias in group interviews and acquire a consensus of ideas from experts. This study uses a modified Delphi technique to gain consensus on the perceived barriers to collaboration between perinatal registered nurses and anesthesiologists in a tertiary labor and delivery unit.
Posttraumatic Stress Symptoms in Swedish Obstetricians and Midwives After Severe Obstetric Events: A Cross-sectional Retrospective Survey
Authors: Wahlberg Å. , Andreen Sachs M. , Johannesson K. , Hallberg G. , Jonsson M. , Skoog Svanberg A. , Högberg U. 
Published: May 2018

(BJOG. 2017;124(8):1264–1271)
Health care professionals may experience psychological reactions such as posttraumatic stress disorder (PTSD) after encountering a severe obstetric incident. The term “second victim” has been used to refer to the distress reported by health care providers after involvement in a medical error or poor patient outcome. This can be detrimental to both the provider and their future patients. This current cross-sectional retrospective study assessed the traumatic experiences reported by obstetricians and midwives following a severe obstetric event, the risk factors for developing PTSD, and the short-term and long-term professional consequences following such severe events.
The Effect of a Multidisciplinary Obstetric Emergency Team Training Program, the in Time Course, on Diagnosis to Delivery Interval Following Umbilical Cord Prolapse: A Retrospective Cohort Study
Authors: Copson S. , Calvert K. , Raman P. , Nathan E. , Epee M. 
Published: May 2018

(Aust N Z J Obstet Gynaecol. 2017;57(3):327–333)
Although the overall incidence of cord prolapse is 0.1% to 0.6%, it often appears in perinatal mortality inquiries, with a perinatal mortality rate of 91 in 1000 in the setting of cord prolapse. Cord prolapse is also significantly associated with spastic quadriplegic or dyskinetic cerebral palsy in both term and preterm infants. In order to optimize perinatal outcome in cases of cord prolapse where there is evidence of fetal distress, a diagnosis to delivery interval (DDI) of <30 minutes has been recommended, but there is no evidence that demonstrates an association between a more rapid DDI and improved neonatal outcomes below this 30-minute interval. On the basis of previous studies, it has also been recommended that all staff involved in maternity care receive training in the management of cord prolapse, in order to avoid the poor communication and confusion about roles and responsibilities shown to be associated with poor outcomes.
Reliability of Pressure Waveform Analysis to Determine Correct Epidural Needle Placement in Laboring Women
Authors: Al-Aamri I. , Derzi S.H. , Moore A. , Elgueta M.F. , Moustafa M. , Schricker T. , Tran D.Q. 
Published: May 2018

(Anaesthesia. 2017;72(7):840–844)
Epidural failure is a significant problem in obstetric anaesthesia with one survey of parturients reporting a failure rate of 23%. There can be many causes of epidural failure, including technical failure due to misidentification of the epidural space. A false loss-of-resistance during epidural needle advancement is a common cause of misidentification. Pressure waveform analysis has been used to provide confirmation of correct epidural needle position when the loss-of-resistance technique was used to identify the epidural space during thoracic epidural procedures. Accurate needle placement is confirmed if a pulsatile waveform synchronized with arterial pulsations is seen. In one study, the failure rate decreased from 24% with loss-of-resistance only to 2% with the addition of pressure waveform analysis. However, the reliability of this technique for lumbar epidural analgesia for labor is unclear. This observational study was performed to determine the reliability of pressure waveform analysis in identifying accurate epidural needle placement during lumbar epidural insertion for labor analgesia.
Patient Selection for Later Delivery Timing With Suspected Previa-accreta
Authors: Perlman N.C. , Little S.E. , Thomas A. , Cantonwine D.E. , Carusi D.A. 
Published: May 2018

(Acta Obstet Gynecol Scand. 2017;96(8):1021–1028)
There is a lack of agreement among organizations regarding the recommended timing of delivery for patients with placenta previa-accreta. The American Congress of Obstetricians and Gynecologists and The Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD) suggest scheduled delivery at 34 weeks and 34 to 356/7 weeks, respectively, while the Royal College of Obstetricians and Gynaecologists does not recommend delivery before 36 to 37 weeks’ gestation for asymptomatic women. Avoiding emergency hemorrhage and other forms of maternal morbidity is an argument for early delivery, but alternatively, there have been findings of adverse neonatal outcomes when women with placental implantation abnormalities deliver prematurely. This study aimed to provide guidance for individualized patient care, hypothesizing that as maternal morbidity in these patients is driven by unscheduled delivery, hemorrhage due to hypervascularity and placental invasion, and surgical complexity, patients at high risk of these outcomes may benefit from earlier planned delivery while those at lower risk may have later deliveries.
Pregnancy Outcomes in Women With Mechanical Prosthetic Heart Valves: A Prospective Descriptive Population-based Study Using the United Kingdom Obstetric Surveillance System (UKOSS) Data Collection System
Authors: Vause S. , Clarke B. , Tower C.L. , Hay C. , Knight M. 
Published: May 2018

(BJOG. 2017;124(9):1411–1419)
Because pregnancy is considered a thrombogenic state, it is a time of significant risk for women with mechanical prosthetic heart valves (MPHVs). While the number of women with MHPVs becoming pregnant is believed to be on the rise, a lack of good quality data on maternal mortality and complications in this patient population impedes optimal clinical management. This current study was undertaken to determine how many women with MPHVs become pregnant each year in the United Kingdom, the incidence of fetal and maternal complications, and any association between the risk of complications and the type of anticoagulation regimen used.
Finding the Breech: Influence of Breech Presentation on Mode of Delivery Based on Timing of Diagnosis, Attempt at External Cephalic Version, and Provider Success With Version
Authors: Andrews S. , Leeman L. , Yonke N. 
Published: May 2018

(Birth. 2017;44(3):222–229)
Breech presentation accounts for 10% to 15% of cesarean deliveries in the United States. Cesarean delivery presents maternal risks and risk for future pregnancies. External cephalic version has a 60% success rate and is effective in decreasing cesarean deliveries. Optimal timing for external cephalic version is 36 to 37 weeks. At a later gestational age, advanced labor or rupture of membranes may prevent external cephalic version. This study investigated the connection between gestational age when breech presentation is diagnosed and the likelihood of a vaginal delivery, hypothesizing that the likelihood of vaginal delivery and external cephalic version would decrease if there was a failure to diagnose breech presentation before 38 weeks’ gestation.
The Effect of Ondansetron on Acute Opioid Tolerance in Patients Receiving Intrathecal Opioids Before Cesarean Delivery
Authors: Greer K.C. , Terkawi A.S. , Tsang S. , Singla P. , Durieux M.E. , Tiouririne M. 
Published: May 2018

(Reg Anesth Pain Med. 2017;42(5):669–673)
Acute opioid tolerance (AOT) and opioid-induced hyperalgesia have recently been raised as concerns associated with the use of opioids as an adjunct to local anesthetics in subarachnoid block for cesarean delivery. Ondansetron has been shown in animal studies to significantly prevent and reverse AOT and opioid-induced hyperalgesia. Such effects have not yet been examined in humans, so this study aimed to investigate whether intravenous (IV) ondansetron would attenuate opioid-induced AOT. The study hypothesized that patients receiving IV ondansetron prior to cesarean delivery would require fewer opioids and have better postoperative pain scores compared with those who did not receive IV ondansetron.
Effect of Intravenous Dexmedetomidine During General Anesthesia on Acute Postoperative Pain in Adults
Authors: Wang Xiuqin , Liu Naifu , Chen Jinlong , Xu Zan , Wang Fumei , Ding Chuan 
Published: May 2018

Background:
Dexmedetomidine has been shown to have an analgesic effect. However, no consensus was reached in previous studies.

Methods:
Electronic databases such as PubMed, Embase, and Cochrane Central were searched for relevant randomized controlled trials. The relative risk and weighted mean difference (WMD) were used to analyze the outcomes. Random-effects model was used for meta-analysis.

Results:
Compared with the normal saline group, patients using DEX showed a significantly decreased pain intensity within 6 hours [WMD=−0.93; 95% confidence interval (CI), −1.34 to −0.53) and at 24 hours after surgery (WMD=−0.47; 95% CI, −0.83 to −0.11). DEX usage significantly reduced the cumulative opioids consumption at 24 hours after surgery (WMD=−6.76; 95% CI, −10.16 to −3.35), decreased the rescue opioids consumption in postanesthesia care unit (WMD=−3.11; 95% CI, −5.20 to −1.03), reduced the risk of rescue analgesics (relative risk=0.49; 95% CI, 0.33-0.71), and the interval to first rescue analgesia was prolonged (WMD=34.93; 95% CI, 20.27-49.59).

Conclusions:
Intravenous DEX effectively relieved the pain intensity, extended the pain-free period, and decreased the consumption of opioids during postoperative recovery of adults in general anesthesia.
Dynamic Contrast-Enhanced Ultrasound Identifies Microcirculatory Alterations in Sepsis-Induced Acute Kidney Injury
Authors: Lima Alexandre , van Rooij Tom , Ergin Bulent , Sorelli Michele , Ince Yasin , Specht Patricia A. C. , Mik Egbert G. , Bocchi Leonardo , Kooiman Klazina , de Jong Nico , Ince Can 
Published: May 2018

Objectives:
We developed quantitative methods to analyze microbubble kinetics based on renal contrast-enhanced ultrasound imaging combined with measurements of sublingual microcirculation on a fixed area to quantify early microvascular alterations in sepsis-induced acute kidney injury.

Design:
Prospective controlled animal experiment study.

Setting:
Hospital-affiliated animal research institution.

Subjects:
Fifteen female pigs.

Interventions:
The animals were instrumented with a renal artery flow probe after surgically exposing the kidney. Nine animals were given IV infusion of lipopolysaccharide to induce septic shock, and six were used as controls.

Measurements and Main Results:
Contrast-enhanced ultrasound imaging was performed on the kidney before, during, and after having induced shock. Sublingual microcirculation was measured continuously using the Cytocam on the same spot. Contrast-enhanced ultrasound effectively allowed us to develop new analytical methods to measure dynamic variations in renal microvascular perfusion during shock and resuscitation. Renal microvascular hypoperfusion was quantified by decreased peak enhancement and an increased ratio of the final plateau intensity to peak enhancement. Reduced intrarenal blood flow could be estimated by measuring the microbubble transit times between the interlobar arteries and capillary vessels in the renal cortex. Sublingual microcirculation measured using the Cytocam in a fixed area showed decreased functional capillary density associated with plugged sublingual capillary vessels that persisted during and after fluid resuscitation.

Conclusions:
In our lipopolysaccharide model, with resuscitation targeted at blood pressure, contrast-enhanced ultrasound imaging can identify renal microvascular alterations by showing prolonged contrast enhancement in microcirculation during shock, worsened by resuscitation with fluids. Concomitant analysis of sublingual microcirculation mirrored those observed in the renal microcirculation.