bluuebunny/crossref_metadata_2025_split huggingface dataset:
Clinical effects of epidurally administered dexmedetomidine with or without lidocaine in sheep
Authors: Mattos‐Junior Ewaldo , Flaherty Derek , Nishimura Lilian Toshiko , Carregaro Adriano Bonfim , de Carvalho Leonardo Lamarca 
Published: December 2019

BackgroundThe aims of this study were evaluate cardiopulmonary, sedative and antinociceptive effects of dexmedetomidine–lidocaine combination via lumbosacral epidural injection in sheep.MethodsSix Santa Inês breed sheep, 16±6 months old and weighing 42.2 ± 5.7 kg were used. Sheep were subjected to epidural anaesthesia with three treatments: L, lidocaine (1.2 mg/kg), D, dexmedetomidine (2.5 μg/kg) or DL, dexmedetomidine plus lidocaine (2.5 μg/kg + 1.2 mg/kg). Drugs were injected via pre‐placed lumbosacral epidural catheters. Cardiopulmonary, arterial blood gases, electrolytes, degree of sedation and antinociceptive aspects were measured before drug administration (T0) and then at 15, 30, 60 and 120 min after drug injection (T15–T120) in all treatments and at T0 to T240 in DL.ResultsThere were significantly increases in PaCO2 at times T60 and T120 in D, and at T30–T120 in DL, compared to baseline. The antinociceptive effects were observed up to 240 min in DL and 60 min in L, and were more intense in DL. Treatment D provided analgesia only in the perineal region, and only at T15.ConclusionThe combination of DEX with lidocaine produced similar cardiopulmonary changes compared with either drug alone, but with greater and more prolonged antinociceptive effects.
Revealing mass-degenerate states in Higgs boson signals
Authors: AbdusSalam Shehu , Cabrera Maria Eugenia 
Published: December 2019

AbstractThe observed Higgs boson signals to-date could be due to having two quasi-degenerate $$125 \,\text {GeV}$$125GeV scalar states in Nature. This kind of scenario tallies well with the predictions from the Next-to-Minimal Supersymmetric Standard Model (NMSSM). We have analysed the phenomenological NMSSM Higgs boson couplings and derived a parameterization of the signal strengths within the two quasi-degenerate framework. With essentially two parameters, it is shown that the combined strengths of the two quasi-degenerate Higgs states in the leptonic (and b-quark) decay channels depart from the Standard Model values in the opposite direction to those in the vector boson channels. We identify experimental measurements for distinguishing a single from a double Higgs scenarios. The proposed parameterization can be used for benchmarking studies towards establishing the status of quasi-degenerate Higgs scenarios.
Torque ripple minimization of PMBLDC motor using simple boost inverter
Authors: Vengadakrishnan Krishnakumar , Madhanakkumar N , Pugazhendiran P , Bharatiraja C , Sriramkumar V 
Published: December 2019

This paper proposes the implementation of simple boost circuit incorporated in inverter fed Brushless DC (BLDC) motor drive to boost the performance of torque. BLDC motor becoming subtle because of its performance. But the motor performance is inferior due to the voltage source inverter fed operation of BLDC motor which initiates torque ripple during commutation. Here the usage of Switched Boost Inverter (SBI) which minimizes the storage elements (passive elements), more active element and introduces shoot through mode during commutation as like Z-source inverter. The analyses of three phase switched boost inverter fed BLDC motor drive have been carried out. The performance of torque almost depends on the stator phase current of the motor. In BLDC motor during commutation interval, one phase loss its exact stator phase current hence it instigate ripple on the torque. The proposed method focuses two intentions to reduce the torque ripple. The first intension is to operate the BLDC motor at 180<sup>ᵒ</sup> electrical conduction mode, second intension is to introduce the shoot through interval to boost the dc link voltage so as to maintain the stator phase current control which leads to suppress the torque ripple during commutation. The validation of the proposed SBI based BLDC motor control is demonstrated both by MATLAB/Simulink and Field programmable gate array (FPGA) controller-SPARRTAN III processor. The experimental results of the developed SBI based BLDC motor drive is working over a wide speed range with minimal torque ripple compared to the normal PWM based inverter control.
High performance DC/DC buck converter using sliding mode controller
Authors: Al-Qaisi Mustafa Abbas Fadel , Shehab Mohanad A. , Al-Gizi Ammar , Al-Saadi Mohammed 
Published: December 2019

<span>This paper investigated the performance of the sliding mode control technique for dc/dc converter using frequency response method. The applications of the step down type switching regulator) buck converter (are found in the devices that use batteries as power source like laptop, cell phones, electric vehicle, and recently, it has also been used in the renewable energy processing, as a maximum output power can be achieved at higher efficiency. In order to optimize the efficiency and for convenient power management, the issues like power on transients, the effect of load variation, Switching and Electromagnetic interference (EMI) losses has to be overcome for which controllers are used. In the proposed method, pulse width modulation (PWM) based on proportional-integral-derivative sliding mode voltage controller (PID SMVC) is designed for a buck converter and the response for appropriate control parameters has been obtained. The system stability has been examined and analyzed from the performance characteristics, which shows clearly that the buck converter controlled by the sliding mode controller has fast dynamic response and it’s very efficient for various applications.</span>
Brushless DC Motor Speed Controller for Electric Motorbike
Authors: Syakir Adli Mohd , Mohamad Hanif Noor Hazrin Hany , Toha Tohara Siti Fauziah 
Published: December 2019

<p>This paper presents a control scheme for speed control system in brushless dc (BLDC) motor to be utilized for electric motorbike. While conventional motorbikes require engine and fuel, electric motorbikes require DC motor and battery pack in order to be powered up. The limitation with battery pack is that it will need to be recharged after a certain period and distance. As the recharging process is time consuming, a PID controller is designed to maintain the speed of the motor at its optimum state, thus ensuring a longer lasting battery time (until the next charge). The controller is designed to track variations of speed references and stabilizes the output speed accordingly. The simulation results conducted in MATLAB/SIMULINK® shows that the motor, equipped with the PID controller was able to track the reference speed in 7.8x10<sup>-2</sup> milliseconds with no overshoot. The result shows optimistic possibility that the proposed controller can be used to maintain the speed of the motor at its optimum speed.</p>
Petrologia dos Stocks Santa Maria, Monte Pedral, Bom Jardim, Boa Esperança e Niterói, Suíte Intrusiva Serra do Catu, Estado de Sergipe, NE Brasil
Authors: Soares Hiakan Santos , Sousa Carlos Santana , Rosa Maria De Lourdes da Silva , Conceição Herbet 
Published: December 2019

Os Stocks Monte Pedral, Boa Esperança, Santa Maria, Niterói e Bom Jardim situam-se na parte Norte do Sistema Orogênico Sergipano. Esses cinco corpos são constituídos por: álcali-feldspato sienito e quartzo álcali-feldspato sienito (Monte Pedral); quartzo álcali-feldspato sienito e álcali-feldspato granito (Boa Esperança); granito (Santa Maria); monzogranito, quartzo monzonito e quartzo monzodiorito (Niterói); granito, quartzo monzonito, granodiorito, quartzo monzodiorito e diorito (Bom Jardim). Essas rochas são porfiríticas, com megacristais de feldspato alcalino rico em zoneamentos oscilatórios. A ocorrência de megacristais de feldspato alcalino com zoneamento composicional bem marcado e enclaves máficos é uma feição que distingue esse magmatismo daqueles de outras suítes intrusivas do Domínio Canindé. Os Stocks Monte Pedral e Boa Esperança correspondem a um magmatismo hipersolvus, enquanto os demais Stocks (Bom Jardim, Niterói e Santa Maria) representam magmatismo subsolvus. A idade U-PbShrimp de 611 ± 4 Ma obtida para o Stock Santa Maria permite correlacioná-lo ao plutonismo shoshonítico mais antigo no Sul da Província Borborema. A mica marrom nas rochas corresponde à biotita e flogopita e indica afinidade orogênica para este plutonismo. A Mg-hornblenda e a tschermakita são os anfibólios primários nestas rochas, os quais cristalizaram-se em condições oxidantes e em profundidades que variam de 12 (3 kbar) a 26 (7 kbar) km. Dados geoquímicos revelam que os magmas responsáveis por formarem os stocks estudados pertencem a suítes shoshoníticas e evoluem por cristalização fracionada, tendo contribuição de material mantélico, além de exibirem assinatura geoquímica (enriquecimento em Elementos Terras Raras Leves), em relação aos pesados, e anomalias negativas em Ta, Nb, P, Sr e Eu, características de magmas associados à subducção.
O novo ambiente de trabalho: diversidade ambiental e flexibilidade do espaço
Authors: Gonçalves Joana Carla Soares 
Published: December 2019

O impacto ambiental e os problemas de conforto e saúde nos edifícios da caixa de vidro inspiraram, no início da década de 1990, novos paradigmas arquitetônicos para a tipologia do edifício de escritório. Porém, as considerações para com à ventilação como iluminação natural eram marcantes já nas obras ícones das primeiras décadas do modernismo no Brasil e no exterior. Mas foi apenas a partir das duas últimas décadas do século XX que o reconhecimento dos efeitos de ambientes mais informais na satisfação e produtividade dos ocupantes levou à inserção de espaços de transição no projeto de escritórios. Estas mudanças arquitetônicas fazem parte de uma noção mais flexível de conforto ambiental. Paralelamente, a evolução das tecnologias de informação, somada ao surgimento da chamada economia do conhecimento, introduziu novas tendências para as rotinas de ocupação do ambiente de trabalho, que valorizam espaços qualificados pela vegetação, áreas informais, comunicação visual entre interior e exterior e luz natural, resultando em ambientes mais abertos ao exterior. A revisão crítica de teorias e estudos de caso sugere um ambiente de trabalho em que espaços alternativos como varandas e jardins tornam-se espaços potenciais para diversas atividades que constituem os novos escritórios do século XXI.
A comparative analysis of hair morphology of wild and domestic ungulate prey species of Leopard Panthera pardus fusca (Mammalia: Carnivora: Felidae) from Goa, India
Authors: Desai Bipin S. Phal , D'costa Avelyno H. , Shyama S.K. 
Published: December 2019

Guard hairs were collected from four live domesticated ungulate species and shed guard hairs of six wild ungulate species from zoo captive animals from five individuals each. Photographic reference was prepared showing analytic features of hair characteristics. Study results were analysed and cuticle and medulla patterns were identified along with pigmentation features from the literature available for wild and domestic ungulates from India and abroad. Clear and easily distinguishable morphological characters of hair medulla and cuticle were used in the present study. Scat analysis of big cats used in this study is easy, speedy and efficient which can be used in routine investigations related to wildlife, crime forensics as well as human animal conflicts by studying carnivore feeding habits. In a majority of the animal species, the distal part of the hair showed maximum variation from the rest of the hair portions. The cuticle scales were imbricate in all tested animals. Scale position in almost all the tested animals was transversal except in goat (proximal part and medial part) and mouse deer (Distal part). Majority of the species showed smooth margins at proximal and medial part. Whereas the distal part scale margin was crenate and rippled in appearance the proximal part and medial part of hair of the majority of sampled animals showed a regular wave -type scale pattern whereas the distal part of hair showed irregular wave-type scale pattern in dominance. The composition of the medulla was multicellular in all the sampled deer species. Only the cow calf’s hair medulla was unicellular and uniseriate in appearance. A comparison of the hair of the domestic pig with that of the wild boar and gaur hair with that of cow calf and buffalo calf hair was made for the first time in the present study. Similarly goat hair morphology can also be differentiated from other cervids in this study. Medulla and cuticle characters in combination with each other can help differentiate wild ungulate species from the domestic ones since these wild ungulate species are frequently involved in hunting crime investigations. Therefore, the photographic reference presented in this study can be used in wildlife forensic science as well as predator diet analysis as an appropriate reference for prey species identification.
The ARM Radar Network: At the Leading Edge of Cloud and Precipitation Observations
Authors: Kollias P. , Bharadwaj N. , Clothiaux E. E. , Lamer K. , Oue M. , Hardin J. , Isom B. , Lindenmaier I. , Matthews A. , Luke E. P. , Giangrande S. E. , Johnson K. , Collis S. , Comstock J. , Mather J. H. 
Published: December 2019

AbstractImproving our ability to predict future weather and climate conditions is strongly linked to achieving significant advancements in our understanding of cloud and precipitation processes. Observations are critical to making these advancements because they both improve our understanding of these processes and provide constraints on numerical models. Historically, instruments for observing cloud properties have limited cloud–aerosol investigations to a small subset of cloud-process interactions. To address these challenges, the last decade has seen the U.S. DOE ARM facility significantly upgrade and expand its surveillance radar capabilities toward providing holistic and multiscale observations of clouds and precipitation. These upgrades include radars that operate at four frequency bands covering a wide range of scattering regimes, improving upon the information contained in earlier ARM observations. The traditional ARM emphasis on the vertical column is maintained, providing more comprehensive, calibrated, and multiparametric measurements of clouds and precipitation. In addition, the ARM radar network now features multiple scanning dual-polarization Doppler radars to exploit polarimetric and multi-Doppler capabilities that provide a wealth of information on storm microphysics and dynamics under a wide range of conditions. Although the diversity in wavelengths and detection capabilities are unprecedented, there is still considerable work ahead before the full potential of these radar advancements is realized. This includes synergy with other observations, improved forward and inverse modeling methods, and well-designed data–model integration methods. The overarching goal is to provide a comprehensive characterization of a complete volume of the cloudy atmosphere and to act as a natural laboratory for the study of cloud processes.
Evacuation Departure Timing during Hurricane Matthew
Authors: Pham Erika O. , Emrich Christopher T. , Li Zhenlong , Mitchem Jamie , Cutter Susan L. 
Published: December 2019

AbstractThis study investigates evacuation behaviors associated with Hurricane Matthew in October of 2016. It assesses factors influencing evacuation decisions and evacuation departure times for Florida, Georgia, and South Carolina from an online survey of respondents. Approximately 62% of the Florida sample, 77% of the Georgia sample, and 67% of the South Carolina sample evacuated. Logistic regression analysis of the departures in the overall time period identified variability in evacuation timing, primarily dependent on prior experience, receipt of an evacuation order, and talking with others about the evacuation order. However, using four logistic regressions to analyze differences in departure times by day shows that the only significant variable across the three main days of evacuation was our proxy variable for evacuation-order times. Depending on the day, other variables of interest include number of household vehicles, previous hurricane experience, and receipt of an evacuation order. Descriptive results show that many variables are considered in the decision to evacuate, but results from subsequent analyses, and respondents’ comments about their experiences, highlight that evacuation orders are the primary triggering variable for when residents left.
Measurement of corneal thickness using Pentacam HR versus Nidek CEM-530 specular microscopy
Authors: De Bernardo Maddalena , Cornetta Palmiro , Marotta Giuseppe , Salerno Giulio , De Pascale Ilaria , Rosa Nicola 
Published: December 2019

Objective To compare corneal thickness (CT) measurements using the CEM-530 (Nidal, Gamagori, Japan) and Pentacam HR (Oculus, Wetzlar, Germany). Methods The CT of 209 healthy subjects (209 right eyes) aged 24 to 89 years (71.35 ± 10.72 years) was measured at the corneal apex (CA), pupil center (PC), and thinnest point (TP) with the Pentacam HR and at the corneal center with the CEM-530 in random order at the same time of day. Results A good correlation but statistically significant difference was found between the CEM-530 and Pentacam HR measurements at the CA (6.10 ± 8.12 µm, R2 = 0.8947), PC (7.46 ± 8.57 µm, R2 = 0.8826), and TP (12.44 ± 10.04 µm, R2 = 0.8392). Comparison of the two devices produced the following regression formulas: y = 0.8859x + 57.644 for the CA, y = 0.8852x +56.657 for the PC, and y = 0.8557x + 68.148 for the TP, where x is the CT obtained with the CEM-530 and y is that obtained with the Pentacam HR. Conclusions These findings indicate that the CEM-530 produces a thicker corneal measurement than the Pentacam HR. The herein-proposed correcting factors are needed to reliably compare these devices.
Double-Lumen Balloons, Are They Only Useful in Neurointerventions? Preliminary Outcomes of Double-Lumen Balloon-Assisted Embolization of Visceral Artery Aneurysms
Authors: Onal Yilmaz , Samanci Cesur , Cicek Esin Derin 
Published: December 2019

Objectives: This study aimed to assess the feasibility and results of double-lumen balloon-assisted embolization of visceral artery aneurysms (VAAs). Methods: Nine patients (mean age, 55.3 ± 10.8 years) diagnosed with VAA (superior mesenteric, n = 5; splenic, n = 2; renal, n = 2) and undergoing double-lumen balloon-assisted embolization were included in this study. Magnetic resonance angiogram (MRA) was used in the 6-month follow-up to assess the aneurysms and patency of the parent arteries. Results: All patients were successfully treated with no reports of morbidity or mortality. Residual filling of the aneurysm neck was detected in 2 patients at the end of the procedure, but those parts were found to be stable in the sixth-month MRA. In 1 patient with renal aneurysm, a stent had to be deployed using a double-lumen balloon catheter because of the prolapse of the coil into the main artery. In another patient with a very large-necked superior mesenteric artery aneurysm, additional coils could be used at the same time thanks to the double-lumen balloon as the coils were not stabilized enough during embolization with the microcatheter coils. Liquid embolic agent was also used in this patient from the same lumen because of the large diameter of the aneurysm. Conclusions: Double-lumen balloons, which are mostly used in neurointerventional procedures, can be efficiently used as in the treatment of VAAs due to their ability to deploy stent and perform coil-liquid embolization through 1 lumen.
Seasonal Influenza Vaccination Patterns Among Pregnant Women in New Mexico
Authors: Chalise Upasana , McDonald Jill A. , Amatya Anup , Morales Martha 
Published: December 2019

Introduction: Seasonal influenza vaccination is recommended for pregnant women, but half of the pregnant women in the United States remain unvaccinated. Vaccine coverage in U.S.–Mexico border states has not been examined in depth even though risk factors for low vaccine coverage exist in these states, especially in the counties bordering Mexico. Method: Using 2012-2014 New Mexico (NM) Pregnancy Risk Assessment and Monitoring System data, this study examined the weighted annual seasonal influenza vaccination rates and the relationship of various factors to vaccination among NM residents with a live birth during those years. Results: Among respondents, 53.8% were Hispanic, 15.7% were Native American, and 30.5% were non-Hispanic White. The vaccination rate in NM increased from 49.0% in 2012 to 64.8% in 2014. The adjusted odds of vaccination were higher among women whose health care provider recommended/offered vaccination during the year prior to delivery compared to women whose provider did not (AOR = 11.92, 95% confidence interval [CI: 9.86, 14.42]) and among those living in the U.S.–Mexico nonborder counties compared to those living in the border counties (AOR = 1.23, 95% CI [1.18, 1.25]). Conclusion: Efforts to increase the vaccination rate among pregnant women in border states should concentrate on health care providers and the highest risk women, such as those resident in the border region.
Registered Nurses’ experiences with, and feelings and attitudes towards, the International Resident Assessment Instrument for Long-Term Care Facilities in New Zealand in 2017
Authors: Vuorinen Minna 
Published: December 2019

Background The International Resident Assessment Instrument for Long-Term Care Facilities (interRAI-LTCF) is a Web-based assessment tool designed to comprehensively assess older adults (≥65 years) living in aged residential care. In 2015 New Zealand was the first country where it was made mandatory nationwide. Aims The purpose of this study was to explore Registered Nurses’ (RNs’) experiences, feelings and attitudes towards interRAI-LTCF. Methods Twelve interviews were conducted 18 months after interRAI-LTCF became mandatory. The interview questions were based on a United Theory of Acceptance and Use of Technology model. Findings were analysed thematically. Results The findings reveal that RNs of all ages embrace technology, and have mostly positive attitudes towards interRAI-LTCF. Limited value, however, is seen in dementia and end-of-life care. RNs reported good experiences with trainers and venues, but inconsistency between training courses. Negative feelings towards interRAI-LTCF were caused by insufficient time to complete assessments. RNs also feel apprehensive about the Assessment & Intelligence Systems, Inc. competency tests. Conclusions Overall RNs supported the use of interRAI-LTCF as a comprehensive assessment tool. Duplication in data entry, insufficient training, and the annual tests caused most stress and negative feelings. Recommendations were made to rectify issues.