bluuebunny/crossref_metadata_2025 huggingface dataset:
CONSUMO ALIMENTAR DAS VITAMINAS A, C, B9 E ZINCO POR ADOLESCENTES DE UMA ESCOLA PÚBLICA
Authors: Silva Emerson Iago Garcia e , MENDES Marianne Louise Marinho , Omena Messias Cristhiane Maria Bazílio de
Published: August 2017

Objetivo: O objetivo deste artigo foi avaliar o consumo de micronutrientes (vitamina A, vitamina C, vitamina B9 – ácido fólico – e zinco) por adolescentes matriculados em uma escola pública de Petrolina (PE), verificar a associação entre consumo, sexo e idade e descrever as fontes mais citadas de alimentos segundo os micronutrientes avaliados. Método: A investigação do consumo alimentar ocorreu por meio do Recordatório 24 horas. A partir do recordatório verificou-se o consumo médio de vitamina A, vitamina C, ácido fólico e zinco e, então, comparou-se com as recomendações. Os adolescentes foram classificados quanto ao consumo, em ingestão adequada (consumo>Recommended Dietary Allowances – RDA), inadequada (consumo<Estimated Average Requirement – EAR) e risco de inadequação (consumo entre EAR e RDA). Resultado: Avaliaram-se 541 adolescentes (10-17 anos) de ambos os sexos. As maiores prevalências de inadequação foram verificadas para vitamina A (88,4%) e ácido fólico (75,7%). O zinco apresentou maior percentual de adequação em todos os grupos. Mais de 50% dos adolescentes apresentaram consumo adequado de vitamina C. Minoria de adolescentes (<10%) apresentou consumo acima do Tolerable Upper Intake Level (UL), com maior destaque para o zinco e a vitamina A. Conclusão: Os adolescentes encontram-se majoritariamente em estado de inadequação alimentar. Desse modo, são necessárias ações promotoras de hábitos alimentares saudáveis para garantir desenvolvimento adequado e prevenir doenças.
O DIAGNÓSTICO DA SÍNDROME METABÓLICA ANALISADO SOB DIFERENTES CRITÉRIOS DE DEFINIÇÃO
Authors: Azambuja Cati Reckelberg , Farinha Juliano Boufleur , Rossi Daniela Sastre , Spohr Carla Francieli , Santos Daniela Lopes dos
Published: August 2017

A síndrome metabólica é uma doença crônica representada por um conjunto de fatores de riscos cardiovasculares. O objetivo deste estudo foi analisar o diagnóstico da síndrome metabólica sob diferentes critérios de definição. Foram avaliados parâmetros antropométricos, bioquímicos e hemodinâmicos de 125 indivíduos. A prevalência de síndrome metabólica variou conforme o critério utilizado para análise: 16,8% (World Health Organization), 57,6% (National Cholesterol Education Program) e 75,2% (International Diabetes Federation). A diferença na prevalência de síndrome metabólica apresentada para a mesma amostra nos leva a concluir que a obrigatoriedade da disfunção relacionada à glicose, apresentada pela Organização Mundial da Saúde, subestima muitos casos do diagnóstico por não considerar outros fatores de risco, como por exemplo a hipertensão, a dislipidemia e a obesidade central, que podem estar presentes no indivíduo.
Uma revolução proletária de curta duração e fortíssimo impacto
Authors: De Almeida Lúcio Flávio Rodrigues
Published: August 2017

Em um aparente paradoxo, numerosas análises marxistas do processo soviético adotaram uma perspectiva personalista. Neste artigo, a inspiração teórico-metodológica é althusseriana, especialmente no que se refere a um conceito não-economicista de modo de produção e à importância dos aparelhos ideológicos. O objetivo é contribuir para uma análise mais objetiva do momento mais profundo (1917-1922) da revolução bolchevique.
Os sinuosos trilhos soviéticos: Alexandre Medvedkine e o cine-trem
Authors: Beverari Rafael Fermino
Published: August 2017

A dimensão técnica das experiências cinematográficas soviéticas ganha novos contornos a partir das produções de seus expoentes cineastas como Eisenstein, Vertov, Pudovkin, Dovzhenko, entre outros. No entanto, diferentes projetos envolvendo a cinematografia russa insurgem no interior do contexto revolucionário. É o caso do cinetrem, organizado por Alexandre Medvedkine, que percorre grande parte do território soviético no ano de 1932 e cujas práticas da elaboração de roteiro, captação de imagens, montagem e exibição se aproximam do cotidiano da luta de classes.
Outubro no seio do movimento negro nos EUA: da revolução à política de concessões
Authors: Góes Weber Lopes
Published: August 2017

Neste artigo, examinamos as determinações em que emergiram os movimentos de natureza socialista nos Estados Unidos da América a partir da Revolução de Outubro de 1917. Apresentamos, a grosso modo, as formas de organização e perspectivas dos movimentos sociais, sindicatos e partidos, a saber: a luta contra o racismo, a discriminação racial e a tentativa de superação da ordem do capital. Por fim, apresentamos as estratégias elaboradas pelas classes dominantes norte-americanas para debelar os movimentos sociais naquele país.
Paradigmas soñados. Enigma para lingüistas
Authors: Segovia Tomás
Published: August 2017

En este número no se incluyeron resúmenes ni palabras clave.
Palabra y contexto en la recreación del romancero tradicional
Authors: Díaz Roig Mercedes
Published: August 2017

En este número no se incluyeron resúmenes ni palabras clave.
El erotismo de Don Quijote
Authors: Aveleyra-Sadowska Teresa
Published: August 2017

En este número no se incluyeron resúmenes ni palabras clave.
Poema de mio Cid. Ed., introd. and notes by Colin Smith. Clarendon Press, Osford, 1972; clxix + 110 pp.
Authors: Domínguez Ivo
Published: August 2017

Se reseñó el libro: Poema de mio Cid. Ed., introd. and notes by Colin Smith.
Vernon A. Chamberlin and Ivan A. Schulman, "La Revista Ilustrada de Nueva York". History, anthology, and index of literary selections. University of Missouri Press, Columbia, 1976; 212 pp.
Authors: Olalde Ramos María Guadalupe
Published: August 2017

Se reseñó el libro: "La Revista Ilustrada de Nueva York". History, anthology, and index of literary selections.
Roberto González Echevarría, Alejo Carpentier: The pilgrim at home. Cornell University Press, New York, 1977; 307 pp.
Authors: Domenella Ana Rosa
Published: August 2017

Se reseñó el libro: Alejo Carpentier: The pilgrim at home.
Josefina Ludmer, Onetti. Los procesos de construcción del relato. Sudamericana, Buenos Aires, 1977; 214 pp.
Authors: Jitrik Noé
Published: August 2017

Se reseñó el libro: Onetti. Los procesos de construcción del relato.
Edna N. Sims, El antifeminismo en la literatura española hasta 1560. Editorial Andes, Bogotá, 1973; 128 pp.
Authors: Gerli E. Michael
Published: August 2017

Se reseñó el libro: El antifeminismo en la literatura española hasta 1560.
"Quanto las cumbres ásperas cabrío / de los montes esconde..." ("Polifemo", vs. 46-47)
Authors: Núñez Cáceres Javier
Published: August 2017

En este número no se incluyeron resúmenes ni palabras clave.
José Luis Rivarola, Las conjunciones concesivas en español medieval y clásico. Max Niemeyer Verlag, Tübingen, 1976; 171 pp. (Beihcfte zur ZRPh).
Authors: Lope Blanch Juan M.
Published: August 2017

Se reseñó el libro: Las conjunciones concesivas en español medieval y clásico.
Ana María Cano González, María Victoria Conde Sáiz, José Luis García Arias y Francisco García González, Gramática bable. Ediciones Naranco, Madrid, 1976; 111 pp.
Authors: González Cristina
Published: August 2017

Se reseñó el libro: Gramática bable.
Un análisis de 'Lo fatal' de Rubén Darío
Authors: Carranza Crespo Raquel
Published: August 2017

En este número no se incluyeron resúmenes ni palabras clave.
Bertil Malmberg, Signes et symboles. Les bases du langage humain. Picard, Paris, 1977; 455 pp. (Cannaissance des langues, 11).
Authors: Plenat Marc
Published: August 2017

Se reseñó el libro: Signes et symboles. Les bases du langage humain.
Edward Fowler Tuttle, Studies in the derivational "aculum": Its Latin origin and its Romance development. Max Niemeyer, Tübingen, 1975; 128 pp. (Beih. zur ZRPh, 146).
Authors: Niederehe Hans-Josef
Published: August 2017

Se reseñó el libro: Studies in the derivational "aculum": Its Latin origin and its Romance development.
Reinhold Kontzi, Aljamiadotexte. Ausgabe mit einer Einleitung und Glossar. Franz Steiner Verlag, Wiesbaden, 1974; 2 ts: 911 pp.
Authors: G. Armistead Samuel
Published: August 2017

Se reseñó el libro: Aljamiadotexte. Ausgabe mit einer Einleitung und Glossar.
Calcos sintácticos del guaraní en el español del Paraguay
Authors: Granda Germán de
Published: August 2017

En este número no se incluyeron resúmenes ni palabras clave.
Marius Sala, Le judéo-espagnol. Mouton, The Hague-Paris, 1976; x + 113 pp. (Trends in linguistics. State of the art reports, 7).
Authors: Perissinotto Giorgio Sabino Antonio
Published: August 2017

Se reseñó el libro: Le judéo-espagnol.
Orden de los pronombres átonos durante el primer cuarto del siglo XVI en el español novohispano
Authors: Parodi Claudia
Published: August 2017

En este número no se incluyeron resúmenes ni palabras clave.
Luis Beltrán, Razones de buen amor. Fundación Juan March-Castalia, Valencia, 1977; 412 pp.
Authors: De Colombí Alicia
Published: August 2017

Se reseñó el libro: Razones de buen amor.
Alan C. Soons, Haz y envés del cuento risible en el Siglo de Oro. (Estudio y antología). Tamesis Books, London, 1976; 106 pp. (Monografías, 49).
Authors: Di Stefano Giuseppe
Published: August 2017

Se reseñó el libro: Haz y envés del cuento risible en el Siglo de Oro. (Estudio y antología).
Rogers, P. P. y F. A. Lapuente, Diccionario de seudónimos literarios españoles, con algunas iniciales. Gredos, Madrid, 1977; 608 pp. (BRH, Diccionarios, 6).
Authors: Poot Herrera Sara
Published: August 2017

Se reseñó el libro: Diccionario de seudónimos literarios españoles, con algunas iniciales.
Use of Big Data to Evaluate and Improve Performance of Traffic Signal Systems in Resource-Constrained Countries
Authors: Lu Yang Carl , Krambeck Holly , Tang Liang
Published: August 2017

Deployment of an adaptive area traffic control system is expensive; physical sensors require installation, calibration, and regular maintenance. Because of the high level of technical and financial resources required, area traffic control systems found in developing countries often are minimally functioning. In Cebu City, Philippines, for example, the Sydney Coordinated Adaptive Traffic System was installed before 2000, and fewer than 35% of detectors were still functioning as of January 2015. To address this challenge, a study was designed to determine whether taxi company GPS data are sufficient to evaluate and improve traffic signal timing plans in resource-constrained environments. If this work is successful, the number of physical sensors required to support those systems may be reduced and thereby substantially lower the costs of installation and maintenance. Taxi GPS data provided by a regional taxi-hailing app were used to design and implement methodologies for evaluating the performance of traffic signal timing plans and for deriving updated fixed-dynamic plans, which are fixed plans (with periods based on observable congestion patterns rather than only time of day) iterated regularly until optimization is reached. To date, three rounds of iterations have been conducted to ensure the stability of the proposed signal timings. Results of exploratory analysis indicate that the algorithm is capable of generating reasonable green time splits, but cycle length adjustment must be considered in the future.
New Approach for Screening Overweight Vehicles: Allowable Ranges of Axle Configurations
Authors: Milutinovic Goran , Kusiak Chris , Bowman Mark , Prakash Arun
Published: August 2017

Throughout the United States, state agencies are issuing an increasingly large number of permits for overweight vehicles every year. State agencies use various methods to process permit requests. The Indiana Department of Transportation employs a screening process that consists of the Tennessee Formula (allowable weight is determined and checked, for every axle group) in combination with the gross vehicle weight limit. If a permit truck satisfies these two screening criteria, it is permitted; otherwise, it is further processed with refined analyses. However, the Tennessee Formula is based on allowable stress design. As a result, cases were observed in which the load effects produced by a truck that would be permitted by the Tennessee Formula actually exceeded load effects produced by the set of rating vehicles when the load factor rating method or the load and resistance factor rating method was employed. The set of rating vehicles is considered a minimum threshold that any nonposted bridge must be able to withstand. This paper presents a different approach for evaluating requests for overweight vehicle permits. Load effects from the set of rating vehicles and typical permit vehicles were directly compared, and screening vehicles with defined ranges of axle weights and axle spacings were developed and recommended for permitting decisions. This method is ( a) safe; ( b) simple, because it can be used easily by nontechnical personnel; and ( c) practical, because a large number of actual permit trucks fall within the proposed screening vehicles.
Translabyrinthine microsurgical resection of small vestibular schwannomas
Authors: Schwartz Marc S. , Lekovic Gregory P. , Miller Mia E. , Slattery William H. , Wilkinson Eric P.
Published: August 2017

OBJECTIVE

Translabyrinthine resection is one of a number of treatment options available to patients with vestibular schwannomas. Though this procedure is hearing destructive, the authors have noted excellent clinical outcomes for patients with small tumors. The authors review their experience at a tertiary acoustic neuroma referral center in using the translabyrinthine approach to resect small vestibular schwannomas. All operations were performed by a surgical team consisting of a single neurosurgeon and 1 of 7 neurotologists.

METHODS

Data from a prospectively maintained clinical database were extracted and reviewed. Consecutive patients with a preoperative diagnosis of vestibular schwannoma that had less than 1 cm of extension into the cerebellopontine angle, operated on between 2008 and 2013, were included. Patents with neurofibromatosis Type 2, previous treatment, or preexisting facial weakness were excluded. In total, 107 patients were identified, 74.7% of whom had poor hearing preoperatively.

RESULTS

Pathologically, 6.5% of patients were found to have a tumor other than vestibular schwannoma. Excluding two malignancies, the tumor control rates were 98.7%, as defined by absence of radiographic disease, and 99.0%, as defined by no need for additional treatment. Facial nerve outcome was normal (House-Brackmann Grade I) in 97.2% of patients and good (House-Brackmann Grade I–II) in 99.1%. Complications were cerebrospinal fluid leak (4.7%) and sigmoid sinus thrombosis (0.9%), none of which led to long-term sequelae.

CONCLUSIONS

Translabyrinthine resection of small vestibular schwannomas provides excellent results in terms of complication avoidance, tumor control, and facial nerve outcomes. This is a hearing-destructive operation that is advocated for selected patients.
Advanced cone-beam CT venous angiographic imaging
Authors: Srinivasan Visish M. , Chintalapani Gouthami , Duckworth Edward A. M. , Kan Peter
Published: August 2017

OBJECTIVE

The evaluation of the venous neurovasculature, especially the dural venous sinuses, is most often performed using MR or CT venography. For further assessment, diagnostic cerebral angiography may be performed. Three-dimensional rotational angiography (3D-RA) can be applied to the venous system, producing 3D rotational venography (3D-RV) and cross-sectional reconstructions, which function as an adjunct to traditional 2D digital subtraction angiography.

METHODS

After querying the database of Baylor St. Luke’s Medical Center in Houston, Texas, the authors reviewed the radiological and clinical data of patients who underwent 3D-RV. This modality was performed based on standard techniques for 3D-RA, with the catheter placed in the internal carotid artery and a longer x-ray delay calculated based on time difference between the early arterial phase and the venous phase.

RESULTS

Of the 12 cases reviewed, 5 patients had neoplasms invading a venous sinus, 4 patients with idiopathic intracranial hypertension required evaluation of venous sinus stenosis, 2 patients had venous diverticula, and 1 patient had a posterior fossa arachnoid cyst. The x-ray delay ranged from 7 to 10 seconds. The 3D-RV was used both for diagnosis and in treatment planning.

CONCLUSIONS

Three-dimensional RV and associated cross-sectional reconstructions can be used to assess the cerebral venous vasculature in a manner distinct from established modalities. Three-dimensional RV can be performed with relative ease on widely available biplane equipment, and data can be processed using standard software packages. The authors present the protocol and technique used along with potential applications to venous sinus stenosis, venous diverticula, and tumors invading the venous sinuses.
Incidence of perioperative medical complications and mortality among elderly patients undergoing surgery for spinal deformity: analysis of 3519 patients
Authors: Jain Amit , Hassanzadeh Hamid , Puvanesarajah Varun , Klineberg Eric O. , Sciubba Daniel M. , Kelly Michael P. , Hamilton D. Kojo , Lafage Virginie , Buckland Aaron J. , Passias Peter G. , Protopsaltis Themistocles S. , Lafage Renaud , Smith Justin S. , Shaffrey Christopher I. , Kebaish Khaled M. , _ _
Published: August 2017

OBJECTIVE

Using 2 complication-reporting methods, the authors investigated the incidence of major medical complications and mortality in elderly patients after surgery for adult spinal deformity (ASD) during a 2-year follow-up period.

METHODS

The authors queried a multicenter, prospective, surgeon-maintained database (SMD) to identify patients 65 years or older who underwent surgical correction of ASD from 2008 through 2014 and had a minimum 2 years of follow-up (n = 153). They also queried a Centers for Medicare & Medicaid Services claims database (MCD) for patients 65 years or older who underwent fusion of 8 or more vertebral levels from 2005 through 2012 (n = 3366). They calculated cumulative rates of the following complications during the first 6 weeks after surgery: cerebrovascular accident, congestive heart failure, deep venous thrombosis, myocardial infarction, pneumonia, and pulmonary embolism. Significance was set at p < 0.05.

RESULTS

During the perioperative period, rates of major medical complications were 5.9% for pneumonia, 4.1% for deep venous thrombosis, 3.2% for pulmonary embolism, 2.1% for cerebrovascular accident, 1.8% for myocardial infarction, and 1.0% for congestive heart failure. Mortality rates were 0.9% at 6 weeks and 1.8% at 2 years. When comparing the SMD with the MCD, there were no significant differences in the perioperative rates of major medical complications except pneumonia. Furthermore, there were no significant intergroup differences in the mortality rates at 6 weeks or 2 years. The SMD provided greater detail with respect to deformity characteristics and surgical variables than the MCD.

CONCLUSIONS

The incidence of most major medical complications in the elderly after surgery for ASD was similar between the SMD and the MCD and ranged from 1% for congestive heart failure to 5.9% for pneumonia. These complications data can be valuable for preoperative patient counseling and informed consent.
Bipolar Packed-bed Electrochemical Reactor for the Degradation of Diclofenac; a Bio-refractory Organic Compound
Authors: Carlesi Carlos , Guajardo Nadia , Monteverde Videla Alessandro , Morales Jaime , Aracena Álvaro
Published: August 2017

Pharmaceuticals have low biodegradability and can retain their chemical structure for long periods of time leading to an accumulation in the environment causing irreversible changes. Electrochemical oxidation has been proved to be an environmentally friendly and economically viable solution for bio-refractory of organic molecules as well as for the disinfection of wastewaters. This paper aims to evaluate the performance of specific energy consumption for a given reduction of toxic organic compound loads in a continuous flow bipolar packed-bed electrochemical reactor and compare this with a classical parallel plate reactor. The energy cost for both the parallel plate and bipolar electrochemical reactors are similar (around 1.6 kWh m-3) lower than other advanced oxidation process reported in literature. However, the bipolar configuration is particularly suitable for low conductivity waste water and/or for avoiding the formation of organochloride compounds in a chloride rich wastewater.
Locomotion Strategy and Magnitude of Ground Reaction Forces During Treadmill Training on ISS
Authors: Fomina Elena , Savinkina Alexandra
Published: August 2017

INTRODUCTION: Creation of the cosmonaut in-flight physical training process is currently based on the leading role of support afferents in the development of hypogravity changes in the motor system. We assume that the strength of support afferents is related to the magnitude
of the ground reaction forces (GRF). For this purpose it was necessary to compare the GRF magnitude on the Russian BD-2 treadmill for different locomotion types (walking and running), modes (active and passive), and subjects.METHODS: Relative GRF values were analyzed while subjects
performed walking and running during active and passive modes of treadmill belt movement under 1 G (N = 6) and 0 G (N = 4) conditions.RESULTS: For different BD-2 modes and both types of locomotion, maximum GRF values varied in both 0 G and 1 G. Considerable individual
variations were also found in the locomotion strategies, as well as in maximum GRF values. In 0 G, the smallest GRF values were observed for walking in active mode, and the largest during running in passive mode. In 1 G, GRF values were higher during running than while walking, but the difference
between active and passive modes was not observed; we assume this was due to the uniqueness of the GRF profile.DISCUSSION: The maximum GRF recorded during walking and running in active and passive modes depended on the individual pattern of locomotion. The maximum GRF values that
we recorded on BD-2 were close to values found by other researchers. The observations from this study could guide individualized countermeasures prescriptions for microgravity.Fomina E, Savinkina A. Locomotion strategy and magnitude of ground reaction forces during treadmill training
on ISS. Aerosp Med Hum Perform. 2017; 88(9):841–849.
Refining Selection for Elite Troops by Predicting Military Training Outcome
Authors: Vrijkotte Susan , Meeusen Romain , Roelands Bart , Kubesch Sabine , Mairesse Olivier , de Schutter Guy , Pattyn Nathalie
Published: August 2017

INTRODUCTION: Paratrooper training courses are very demanding, leading to a high number of drop-outs, despite existing selection criteria. This study investigated physiological, neuropsychological, and subjective data of completers and drop-outs during paratrooper training to
identify potential predictive indices.METHODS: Tested were 24 paratrooper soldiers before (t0), after 8 wk (t1), and at the end of a 12-wk training camp (t2). There were 11 soldiers who completed the course and 13 dropped out. The Training OPtimalisation
test (TOPtest) uses two maximum exercise events to assess changes in measured parameters. The TOPtest was administered at t0, t1, and t2; physiological [i.e., adrenocorticotrophic hormone (ACTH), cortisol, heart rate (HR)], neuropsychological (Stroop, Flanker,
Go NoGo, Task Switch), and subjective data [Profile of Mood States (POMS)] were collected. Physiological and subjective raw data was gathered pre- and post-test from each of the two maximum exercise tests. The pre/post-test change of each parameter’s raw values was calculated as the
parameter’s reactivity (or delta score).RESULTS: At t0, drop-outs showed a significantly smaller HR reactivity (117.9 ± 14.0 vs.107.7 ± 10.6). Delta scores of tension and fatigue values differed significantly between completers and drop-outs at t0.
Completers’ physiological reactivity during the TOPtest at t2 (HR: 105.91 ± 13.68 vs. 95.55 ± 10.28) was significantly reduced and became comparable to the drop-outs’ reactivity at t0. Delta scores of fatigue and tension values showed a similar
pattern.DISCUSSION: Reactivity of HR, tension, and fatigue parameter values were found to have predictive value in identifying completers vs. drop-outs of an elite paratrooper training course.Vrijkotte S, Meeusen R, Roelands B, Kubesch S, Mairesse O, de Schutter G, Pattyn N.
Refining selection for elite troops by predicting military training outcome. Aerosp Med Hum Perform. 2017; 88(9):850–857.
Dynamic Cerebral Autoregulation During the Combination of Mild Hypercapnia and Cephalad Fluid Shift
Authors: Kurazumi Takuya , Ogawa Yojiro , Yanagida Ryo , Morisaki Hiroshi , Iwasaki Ken-ichi
Published: August 2017

BACKGROUND: Mild hypercapnia combined with a cephalad fluid shift [e.g., that occurring during spaceflight or laparoscopic surgery with head-down tilt (HDT)] might affect cerebral autoregulation. However, no reports have described the effects of the combination on dynamic cerebral
autoregulation. Therefore, we tested the hypothesis that the combination of mild hypercapnia and a cephalad fluid shift would attenuate dynamic cerebral autoregulation.METHODS: There were 15 healthy male volunteers who were exposed to 4 10-min protocols in which they received air
in the supine position (Placebo/Supine), 3% carbon dioxide (CO2) in the supine position (CO2/Supine), air with −10° HDT (Placebo/HDT) and 3% CO2 with −10° HDT (CO2/HDT). Dynamic cerebral autoregulation was evaluated using a transfer
function analysis of the beat-to-beat variability in mean arterial blood pressure (ABP) and mean cerebral blood flow (CBF) velocity.RESULTS: The phase in the low-frequency range was significantly lower during CO2/HDT than all other protocols, where CO2/HDT
was −25% lower than Placebo/Supine (CO2/HDT, 0.49 ± 0.21; Placebo/Supine, 0.65 ± 0.16 radians). The transfer function gain in the low-frequency range was significantly higher during CO2/HDT than all other protocols, where CO2/HDT was 26%
higher than Placebo/Supine (CO2/HDT, 1.08 ± 0.34; Placebo/Supine, 0.86 ± 0.28 cm · s−1 · mmHg−1). However, neither the CO2/Supine nor Placebo/HDT showed significant differences compared with the Placebo/Supine.DISCUSSION:
Even short-term exposure to 3% CO2 plus HDT increased synchrony and the magnitude of transmission between ABP and CBF in the low-frequency range. Thus, the combination of mild hypercapnia and a cephalad fluid shift attenuated dynamic cerebral autoregulation.Kurazumi T, Ogawa
Y, Yanagida R, Morisaki H, Iwasaki K. Dynamic cerebral autoregulation during the combination of mild hypercapnia and cephalad fluid shift. Aerosp Med Hum Perform. 2017; 88(9):819–826.
Mechanochemical enzymatic resolution ofN-benzylated-β3-amino esters
Authors: Pérez-Venegas Mario , Reyes-Rangel Gloria , Neri Adrián , Escalante Jaime , Juaristi Eusebio
Published: August 2017

The use of mechanochemistry to carry out enantioselective reactions has been explored in the last ten years with excellent results. Several chiral organocatalysts and even enzymes have proved to be resistant to milling conditions, which allows for rather efficient enantioselective transformations under ball-milling conditions. The present article reports the first example of a liquid-assisted grinding (LAG) mechanochemical enzymatic resolution of racemic β3-amino esters employingCandida antarcticalipase B (CALB) to afford highly valuable enantioenrichedN-benzylated-β3-amino acids in good yields. Furthermore the present protocol is readily scalable.
Variations in the Infrared Spectra of Wüstite with Defects and Disorder
Authors: Koike C. , Matsuno J. , Chihara H.
Published: August 2017

The presence of FeO particles in circumstellar space has been suggested based on the observation of a mysterious 21 μm emission band. However, the complete infrared spectra of FeO have not been obtained so far; hence, data of the infrared (IR) spectra of FeO need to be investigated. We prepared synthetic and commercial samples of FeO, which were obtained by crushing bulk samples, annealing iron oxalate dihydrate (

), and mechanical milling of a powder mixture comprising (Fe and

) particles with different milling times. We present a new study on the IR spectra of these samples, and show that these spectra changed according to defects and disorders. Furthermore, FeO particles are very sensitive to oxygen fugacity and temperature. The spectra of FeO particles were compared with the unidentified observed feature. It may be difficult for FeO particles to exist alone in the ISM and circumstellar space. This may be connected to the problem of missing iron in the ISM.
AGNs and Their Host Galaxies in the Local Universe: Two Mass-independent Eddington Ratio Distribution Functions Characterize Black Hole Growth
Authors: Weigel Anna K. , Schawinski Kevin , Caplar Neven , Wong O. Ivy , Treister Ezequiel , Trakhtenbrot Benny
Published: August 2017

We use a phenomenological model to show that black hole growth in the local universe (

) can be described by two separate, mass-independent Eddington ratio distribution functions (ERDFs). We assume that black holes can be divided into two independent groups: those with radiatively efficient accretion, primarily hosted by optically blue and green galaxies, and those with radiatively inefficient accretion, which are mainly found in red galaxies. With observed galaxy stellar mass functions as input, we show that the observed active galactic nucleus (AGN) luminosity functions can be reproduced by using mass-independent, broken power-law-shaped ERDFs. We use the observed hard X-ray and 1.4 GHz radio luminosity functions to constrain the ERDF for radiatively efficient and inefficient AGNs, respectively. We also test alternative ERDF shapes and mass-dependent models. Our results are consistent with a mass-independent AGN fraction and AGN hosts being randomly drawn from the galaxy population. We argue that the ERDF is not shaped by galaxy-scale effects, but by how efficiently material can be transported from the inner few parsecs to the accretion disc. Our results are incompatible with the simplest form of mass quenching where massive galaxies host higher accretion rate AGNs. Furthermore, if reaching a certain Eddington ratio is a sufficient condition for maintenance mode, it can occur in all red galaxies, not just the most massive ones.
The Physical Origin of Long Gas Depletion Times in Galaxies
Authors: Semenov Vadim A. , Kravtsov Andrey V. , Gnedin Nickolay Y.
Published: August 2017

We present a model that explains why galaxies form stars on a timescale significantly longer than the timescales of processes governing the evolution of interstellar gas. We show that gas evolves from a non-star-forming to a star-forming state on a relatively short timescale, and thus the rate of this evolution does not limit the star formation rate (SFR). Instead, the SFR is limited because only a small fraction of star-forming gas is converted into stars before star-forming regions are dispersed by feedback and dynamical processes. Thus, gas cycles into and out of a star-forming state multiple times, which results in a long timescale on which galaxies convert gas into stars. Our model does not rely on the assumption of equilibrium and can be used to interpret trends of depletion times with the properties of observed galaxies and the parameters of star formation and feedback recipes in simulations. In particular, the model explains how feedback self-regulates the SFR in simulations and makes it insensitive to the local star formation efficiency. We illustrate our model using the results of an isolated L
*-sized galaxy simulation that reproduces the observed Kennicutt–Schmidt relation for both molecular and atomic gas. Interestingly, the relation for molecular gas is almost linear on kiloparsec scales, although a nonlinear relation is adopted in simulation cells. We discuss how a linear relation emerges from non-self-similar scaling of the gas density PDF with the average gas surface density.
Outflow Kinematics Manifested by the Hα Line: Gas Outflows in Type 2 AGNs. IV.
Authors: Kang Daeun , Woo Jong-Hak , Bae Hyun-Jin
Published: August 2017

Energetic ionized gas outflows driven by active galactic nuclei (AGNs) have been studied as a key phenomenon related to AGN feedback. To probe the kinematics of the gas in the narrow-line region, [O iii] λ5007 has been utilized in a number of studies showing nonvirial kinematic properties due to AGN outflows. In this paper, we statistically investigate whether the Hα emission line is influenced by AGN-driven outflows by measuring the kinematic properties based on the Hα line profile and comparing them with those of [O iii]. Using the spatially integrated spectra of ∼37,000 Type 2 AGNs at z < 0.3 selected from the Sloan Digital Sky Survey DR7, we find a nonlinear correlation between Hα velocity dispersion and stellar velocity dispersion that reveals the presence of the nongravitational component, especially for AGNs with a wing component in Hα. The large Hα velocity dispersion and velocity shift of luminous AGNs are clear evidence of AGN outflow impacts on hydrogen gas, while relatively smaller kinematic properties compared to those of [O iii] imply that the observed outflow effect on the Hα line is weaker than the case of [O iii].
Reddening and He i∗ λ10830 Absorption Lines in Three Narrow-line Seyfert 1 Galaxies
Authors: Zhang Shaohua , Zhou Hongyan , Shi Xiheng , Liu Wenjuan , Pan Xiang , Jiang Ning , Ji Tuo , Jiang Peng , Wang Shufen
Published: August 2017

We report the detection of heavy reddening and the He i* λ10830 absorption lines at the active galactic nucleus (AGN) redshift in three narrow-line Seyfert 1 galaxies: SDSS J091848.61+211717.0, SDSS J111354.66+124439.0, and SDSS J122749.13+321458.9. They exhibit very red optical to near-infrared colors, narrow Balmer/Paschen broad emission lines and He i* λ10830 absorption lines. The ultraviolet-optical-infrared nucleus continua are reddened by the SMC extinction law of E(B − V) ∼ 0.74, 1.17, and 1.24 mag for three objects, which are highly consistent with the values obtained from the broad-line Balmer decrements, but larger than those of narrow emission lines. The reddening analysis suggests that the extinction dust simultaneously obscures the accretion disk, the broad emission-line region, and the hot dust from the inner edge of the torus. It is possible that the dust obscuring the AGN structures is the dusty torus itself. Furthermore, the Cloudy analysis of the He i* λ10830 absorption lines proposes the distance of the absorption materials to be the extend scale of the torus, which greatly increases probabilities of the obscure and absorption materials being the dusty torus.
North–South Asymmetry in Rieger-type Periodicity during Solar Cycles 19–23
Authors: Gurgenashvili Eka , Zaqarashvili Teimuraz V. , Kukhianidze Vasil , Oliver Ramon , Ballester Jose Luis , Dikpati Mausumi , McIntosh Scott W.
Published: August 2017

Rieger-type periodicity has been detected in different activity indices over many solar cycles. It was recently shown that the periodicity correlates with solar activity having a shorter period during stronger cycles. Solar activity level is generally asymmetric between northern and southern hemispheres, which could suggest the presence of a similar behavior in the Rieger-type periodicity. We analyze the sunspot area/number and the total magnetic flux data for northern and southern hemispheres during solar cycles 19–23, which had remarkable north–south asymmetry. Using wavelet analysis of sunspot area and number during the north-dominated cycles (19–20), we obtained the periodicity of 160–165 days in the stronger northern hemisphere and 180–190 days in the weaker southern hemisphere. On the other hand, south-dominated cycles (21–23) display the periodicity of 155–160 days in the stronger southern hemisphere and 175–188 days in the weaker northern hemisphere. Therefore, the Rieger-type periodicity has the north–south asymmetry in sunspot area/number data during solar cycles with strong hemispheric asymmetry. We suggest that the periodicity is caused by magnetic Rossby waves in the internal dynamo layer. Using the dispersion relation of magnetic Rossby waves and observed Rieger periodicity, we estimated the magnetic field strength in the layer as 45–49 kG in more active hemispheres (north during cycles 19–20 and south during cycles 21–23) and 33–40 kG in weaker hemispheres. The estimated difference in the hemispheric field strength is around 10 kG, which provides a challenge for dynamo models. Total magnetic flux data during cycles 20–23 reveals no clear north–south asymmetry, which needs to be explained in the future.
Determinants of B2B E-Marketplace Adoption
Authors: Upadhyaya Pallavi , Mohan P. , Karantha Manjunatha Prasad
Published: August 2017

Development of Micro, Small and Medium Enterprise (MSME) sector in India has been a priority issue. They constitute 95 percent of total industrial units, provide huge employment opportunities and contribute significantly to GDP. Prior research indicates that B2B e-marketplace offers ample opportunities for MSMEs to access global markets and enhances their competitiveness. There is limited empirical research on B2B e-marketplace use by Indian MSMEs, as also on the factors that influence their adoption. As adoption of B2B e-marketplace is in its growth stage in India, there is a need to understand the factors that influence the adoption. Based on the theoretical frameworks of Diffusion of Innovation, Institutional theory and Transaction cost theory, a conceptual framework that identifies organization, environment, product and e-marketplace related factors influencing adoption is developed. Using the data from 122 MSMEs, the significant factors that influence adoption of B2B e-marketplace are identified. The practical implications for the B2B e-marketplace service providers are also discussed.
Towards A Virtual Machine Migration Algorithm Based On Multi-Objective Optimization
Authors: Chen Xiang , Tang Jun-rong , Zhang Yong
Published: August 2017

In the cloud computing, the virtual machine (VM) dynamical management method needs to consider VM resource re-configuration caused by system computation resource status changing and load fluctuation. Based on migration objectives as QoS (Quality of Service), resource competition and energy consumption, the VM migration time, migration objective node selection and VM placement strategies are designed in this work. The Multi-Criteria Decision-Making (MCDM) method is also introduced for migration destination host selection. Experiment results show that the multi-objective optimization management method with TOPSIS can achieve lower service-level agreement (SLA) violation rate, less energy consumption and better balance among different objectives.
Modulation Recognition of Digital Multimedia Signal Based on Data Feature Selection
Authors: Wang Hui , Guo Li Li , Lin Yun
Published: August 2017

Automatic modulation recognition is very important for the receiver design in the broadband multimedia communication system, and the reasonable signal feature extraction and selection algorithm is the key technology of Digital multimedia signal recognition. In this paper, the information entropy is used to extract the single feature, which are power spectrum entropy, wavelet energy spectrum entropy, singular spectrum entropy and Renyi entropy. And then, the feature selection algorithm of distance measurement and Sequential Feature Selection(SFS) are presented to select the optimal feature subset. Finally, the BP neural network is used to classify the signal modulation. The simulation result shows that the four-different information entropy can be used to classify different signal modulation, and the feature selection algorithm is successfully used to choose the optimal feature subset and get the best performance.
Die lewe en werk van Gerhard Ebeling (06 Julie 1912 – 30 September 2001): ŉ Leksikografiese bydrae tot Reformasie 500
Authors: Van Wyk Gabriël M.J.
Published: August 2017

Focusing on Ebeling’s own account of his ‘theological path’, autobiographical notes in hispublications and a gold mine of information in the biography of Albrecht Beutel on Ebelingpublished in 2012 the article describes important events with theological significance in lifeof Gerhard Ebeling. Ebeling is often portrayed in theological literature as a representativeof the so-called New Hermeneutic. For many people the name Ebeling is synonymous withhermeneutics, as if his only contribution to theology was the development of ‘a newhermeneutical theory’. This is a misconception. The article introduces the reader to anotherand more important point of view to value the life and work of Ebeling – his interest in theReformer Martin Luther, that not only had profound influence on Ebeling’s own theologicalthinking, but also resulted in many ground breakingpublications on Luther. The articlecelebrates Ebeling as one of the most important Luther scholars of all times.
The psychometric properties of a shortened corporate entrepreneurship assessment instrument
Authors: Steyn Renier
Published: August 2017

Background: The entrepreneurial climate in organisations is often seen as an important antecedent to innovation and organisational success. Assessing the nature of the climate in a reliable and valid manner is essential, as this will guide the implementation of appropriate interventions where necessary as well as assessing the effects of such interventions.Aim: The aim of this research was to evaluate the psychometric properties of a measure of entrepreneurial climate. Entrepreneurial climate was measured using a shortened version of the Hornsby, Kuratko and Zahra (2002) instrument, called the Corporate Entrepreneurship Assessment Instrument (CEAI). Making information on the psychometric properties of the instrument available directly relates to its utility.Setting: The setting was medium to large South African companies. A random sample of employees was drawn from 53 selected companies across South Africa, with 60 respondents per company (N = 3 180).Methods: A cross-sectional survey design was used. Several instruments were administered, including the shortened version of the CEAI. Cronbach’s alpha was used to test for reliability and several methods were used to test for validity. Correlation analysis was used to test for concurrent validity, convergent validity and divergent validity. Principle component factor analysis was used to test for factorial validity and a t-test to test for known-group validity.Results: The results showed that the reliability for the total score of the shortened version of the CEAI was acceptable at 0.758. The results also showed some evidence of concurrent validity, as well as homogeneity among the items. With regard to factorial validity, all items loaded in accordance with the subscales of the instrument. The measure was able to distinguish, as expected, between government organisations and private business entities, suggesting known-group validity. Convergent validity and divergent validity were also assessed. Interesting to note was that entrepreneurship climate correlates more with general employee attitude (e.g. employee engagement; R= 0.420, p < 0.001 and organisational commitment, R = 0.331, p < 0.001) than with self-reported innovation (R = 0.277, p < 0.001 and R = 0.267, p < 0.001).Contribution: This paper not only provided information on the reliability and validity of the shortened version of the CEAI in the South African context but also provides norms to be used when researchers or consultants work with smaller groups. Recommendations on the appropriate use of the instrument are offered and this contributes to the responsible use of the instrument.
Resolving the mesospheric nighttime 4.3 µm emission puzzle: comparison of the CO2(ν3) and OH(ν) emission models
Authors: Panka Peter A. , Kutepov Alexander A. , Kalogerakis Konstantinos S. , Janches Diego , Russell James M. , Rezac Ladislav , Feofilov Artem G. , Mlynczak Martin G. , Yiğit Erdal
Published: August 2017

Abstract. In the 1970s, the mechanism of vibrational energy transfer from chemically produced OH(ν) in the nighttime mesosphere to the CO2(ν3) vibration, OH(ν) ⇒ N2(ν) ⇒ CO2(ν3), was proposed. In later studies it was shown that this "direct" mechanism for simulated nighttime 4.3 µm emissions of the mesosphere is not sufficient to explain space observations. In order to better simulate these observations, an additional enhancement is needed that would be equivalent to the production of 2.8–3 N2(1) molecules instead of one N2(1) molecule in each quenching reaction of OH(ν) + N2(0). Recently a new "indirect" channel of the OH(ν) energy transfer to N2(ν) vibrations, OH(ν) ⇒ O(1D) ⇒ N2(ν), was suggested and then confirmed in a laboratory experiment, where its rate for OH(ν = 9) + O(3P) was measured. We studied in detail the impact of the "direct" and "indirect" mechanisms on CO2(ν3) and OH(ν) vibrational level populations and emissions. We also compared our calculations with (a) the SABER/TIMED nighttime 4.3 µm CO2 and OH 1.6 and 2.0 µm limb radiances of the mesosphere–lower thermosphere (MLT) and (b) with ground- and space-based observations of OH(ν) densities in the nighttime mesosphere. We found that the new "indirect" channel provides a strong enhancement of the 4.3 µm CO2 emission, which is comparable to that obtained with the "direct" mechanism alone but assuming an efficiency that is 3 times higher. The model based on the "indirect" channel also produces OH(ν) density distributions which are in good agreement with both SABER limb OH emission observations and ground and space measurements. This is, however, not true for the model which relies on the "direct" mechanism alone. This discrepancy is caused by the lack of an efficient redistribution of the OH(ν) energy from higher vibrational levels emitting at 2.0 µm to lower levels emitting at 1.6 µm. In contrast, the new  indirect  mechanism efficiently removes at least five quanta in each OH(ν ≥ 5) + O(3P) collision and provides the OH(ν) distributions which agree with both SABER limb OH emission observations and ground- and space-based OH(ν) density measurements. This analysis suggests that the important mechanism of the OH(ν) vibrational energy relaxation in the nighttime MLT, which was missing in the emission models of this atmospheric layer, has been finally identified.