bluuebunny/crossref_metadata_2025_split huggingface dataset:
Analisis Sifat Fisik dan Mekanik Poros Berulir (Screw) Untuk Pengupas Kulit Ari Kedelai Berbahan Dasar Aluminium Bekas dan Piston Bekas
Authors: Wisnujati Andika , Hafiz Lalu Alpan 
Published: August 2018

Aluminum alloys in this study using a mixture ofÂ aluminum profiles and former piston. Former piston is used toÂ get the high enough of element Si. The addition of TiB elementÂ (Titanium-Boron) as much as 0.02% at the time of castingÂ expected to improve the mechanical and physical character ofÂ aluminum, so that expected the aluminum alloy has a strength that is much better than without the addition of any element.Â Aluminum alloy to manufacture screw will be casted by usingÂ sand molds on three types of variations mold temperature 200oC,Â 300oC and 400oC. The Test were conducted to determine the mechanical properties of the aluminum alloy and physical that are : tensile test, hardness test, and metallographic with an optical microscope. The maximum test result occurred in Al-SiÂ alloy material with TiB addition 0.02% and a heatingÂ temperature mold 400oC produces maximum tensile stress ofÂ 628.86 N / mmÂ², while for Vickers Hardness Number (VHN) givesÂ the figure of 114 kg / mm2; and for the results obtained from theÂ data metallographic structure formed hypereutectic silicon whichÂ form the primary silicon phase. That phase provides high wearÂ resistance. Finally, it is evident that the Al-Si alloys mentionedÂ above can improve the properties of aluminum to manufacture aÂ screw.
Squalene: a multi-task link in the crossroads of cancer and aging
Authors: Ronco Alvaro L. , De Stéfani Eduardo 
Published: August 2018

Since its discovery in the beginning of the XXth century, squalene has been recognized as an important link in metabolic pathways. More recently, it has been further recognized as an intermediate step in the biosynthesis of cholesterol. Its well known antioxidant capability, together with its ability to protect skin, improve the immune system, and modulate the lipid profile, confer a high potential to this natural substance, which is spread all across the body structure, though mainly in the epithelial tissues, and in particular the skin sebum. This review will focus mainly on its major properties, which are related to anticancer properties, the maintenance of the oxidation/antioxidation balance, and its antiaging capabilities. Although the substance was originally obtained from shark liver oil, it is currently possible to obtain useful amounts from vegetable sources like extra virgin olive oil, therefore avoiding the dependence on capturing the aforementioned animal species. Recognized as one of the key components of the Mediterranean dietary style, squalene is necessary to adequately manage oxygen and its derivatives in every cell of the body. Key words: aging, antioxidants, cancer, cholesterol, diet, olive oil, squalene
A New Catalog of Radial Velocity Standard Stars from the APOGEE Data
Authors: Huang Y. , Liu X.-W. , Chen B.-Q. , Zhang H.-W. , Yuan H.-B. , Xiang M.-S. , Wang C. , Tian Z.-J. 
Published: August 2018

Abstract
We present a new catalog of 18080 radial velocity (RV) standard stars selected from the APOGEE data. These RV standard stars are observed at least three times and have a median stability (3σ
RV) around 240 m s−1 over a time baseline longer than 200 days. They are largely distributed in the northern sky and could be extended to the southern sky by the future APOGEE-2 survey. Most of the stars are red giants (J − K
s ≥ 0.5) owing to the APOGEE target selection criteria. Only about 10 per cent of them are main-sequence stars. The H-band magnitude range of the stars is 7–12.5 mag with the faint limit much fainter than the magnitudes of previous RV standard stars. As an application, we show the new set of standard stars to determine the RV zero points of the RAVE, the LAMOST, and the Gaia-RVS Galactic spectroscopic surveys.
Regularly Spaced Infrared Peaks in the Dusty Spirals of Messier 100
Authors: Elmegreen Bruce G. , Elmegreen Debra Meloy , Efremov Yuri N. 
Published: August 2018

Abstract

Spitzer Space Telescope Infrared Array Camera (IRAC) images of M100 show numerous long filaments with regularly spaced clumps, suggesting the associated cloud complexes formed by large-scale gravitational instabilities in shocked and accumulated gas. Optical images give no hint of this underlying regularity. The typical spacing between near-infrared clumps is ∼410 pc, which is ∼3 times the clump diameter, consistent with the fastest growing mode in a filament of critical line density. The IRAC magnitudes and colors of several hundred clumps are measured in the most obvious 27 filaments and elsewhere. The clump colors suggest that the dust is associated with diffuse gas, polycyclic aromatic hydrocarbon emission, and local heating from star formation. Neighboring clumps on the same filament have similar magnitudes. The existence of many clumps all along the filament lengths suggests that the ages of the filaments are uniform. The observations support a model where interstellar gas is systematically accumulated over lengths exceeding several kpc, forming spiral-like filaments that spontaneously collapse into giant clouds and stellar complexes. Optical wavelengths show primarily the irregular dust debris, H ii regions, and lingering star formation downstream from these primal formation sites.
The Three-parameter Correlations About the Optical Plateaus of Gamma-Ray Bursts
Authors: Si Shu-Kun , Qi Yan-Qing , Xue Feng-Xia , Liu Ya-Jie , Wu Xiao , Yi Shuang-Xi , Tang Qing-Wen , Zou Yuan-Chuan , Wang Fei-Fei , Wang Xiang-Gao 
Published: August 2018

Abstract
Well-sampled optical light curves of 50 gamma-ray bursts (GRBs) with plateau features are compiled from the literature. By empirical fitting, we obtained the parameters of the optical plateaus, such as the decay slopes (α
1 and α
2), the break times (T
b), and the corresponding optical fluxes (F
b) at the break times. The break time of optical plateaus ranges from tens of seconds to 106 s, with a typical value of about 104 s. We have calculated the break luminosity, and it mainly ranges from 1044 erg s−1 to 1047 erg s−1, which is generally two or three orders of magnitude less than the corresponding break luminosity of the X-ray afterglow plateaus. We reanalyzed the optical plateaus and also found that a significantly tighter correlation exists when we added the isotropic equivalent energy of GRBs E

γ,iso into the L
b,z–T
b,z relation. The best-fit correlation is obtained to be

L

b
,
z

∝

T

b
,
z

−
0.9

E

γ
,
iso

0.4

. We next explored the possible correlations among L
b,z, T
b,z and E
p,i, and found there is also a tight correlation between them, which takes the form of

L

b
,
z

∝

T

b
,
z

−
0.9

E

p
,
i

0.5

. We argue that these two tight L
b,z–T
b,z–E

γ,iso and L
b,z–T
b,z–E
p,i correlations are more physical, and it may be directly related to the radiation physics of GRBs. The tight correlations can possibly be used as standard candles.
K2 Study of the Magnetic Precataclysmic Variable V1082 Sagittarius
Authors: Tovmassian Gagik , Szkody Paula , Yarza Ricardo , Kennedy Mark 
Published: August 2018

Abstract
We present a long-term light curve of the precataclysmic variable (CV) V1082 Sgr obtained by the K2 mission over the course of 81 days. We analyze the entire complex light curve as well as explore several sections in detail with a sliding periodogram. The long data set allows the first detection of the orbital period in the light curve, as well as the confirmation of cyclical variability on a longer timescale of about a month. A portion of the light curve in deep minimum reveals a clean, near-sinusoidal variability attributed to the rotation of the spotted surface of the donor star. We model that portion of the light curve assuming that the donor star grossly under-fills its Roche lobe, has cool spots similar to a chromospherically active, slightly evolved early K-star, and might be irradiated by the X-ray beam from the magnetically accreting white dwarf. The fast variability of the object in the active phases resembles the light curves of magnetic CVs (polars).
Increasing the Research Value of Digitized Fossil Museum Specimens via Integrated Stable Isotope Data
Authors: Moran Sean , MacFadden Bruce , Barboza Michelle 
Published: August 2018

Over the past several decades, thousands of stable isotope analyses (δ13C, δ18O) published in the peer-reviewed literature have advanced understanding of ecology and evolution of fossil mammals in Deep Time. These analyses typically have come from sampling vouchered museum specimens. However, the individual stable isotope data are typically disconnected from the vouchered specimens, and there likewise is no central repository for this information.
This paper describes the status, potential, and value of the integration of stable isotope data in museum fossil collections. A pilot study in the Vertebrate Paleontology collection at the Florida Museum of Natural History has repatriated within Specify more than 1,000 legacy stable isotope data (mined from the literature) with the vouchered specimens by using ancillary non Darwin Core (DwC) data fields. As this database grows, we hope to both:

validate previous studies that were done using smaller data sets; and
ask new questions of the data that can only be addressed with larger, aggregated data sets.

validate previous studies that were done using smaller data sets; and
ask new questions of the data that can only be addressed with larger, aggregated data sets.
Additionally, we envision that as the community gains a better understanding of the importance of these kinds of ancillary data to add value to vouchered museum specimens, then workflows, data fields, and protocols can be standardized.
Principles of pharmacological correction of pulmonary arterial hypertension
Authors: Korokina Liliya V. , Zhernakova Nina I. , Korokin Mikhail V. , Pokopejko Olga N. 
Published: August 2018

Definition and classification: Pulmonary hypertension (PH) is a group of life-threatening progressive diseases of various genesis, characterized by a progressive increase in arterial pressure (AP) in the pulmonary artery (PA), the remodeling of pulmonary vessels, which leads to an increase in pulmonary vascular resistance and pulmonary arterial pressure and more often leads to right ventricular heart failure and premature death. Pulmonary hypertension is clinically divided into five groups: patients in the first group have idiopathic pulmonary arterial hypertension (IPAH), whereas in patients of other groups secondary PH associated with cardiopulmonary or other systemic diseases is observed. The development of secondary LH is caused by congenital heart defects, collagenoses, presence of thrombus in the pulmonary artery, prolonged high pressure in the left atrium, hypoxemia, chronic obstructive pulmonary diseases (COPDs). In case of secondary PH, thrombosis and other changes in the pulmonary veins occur.
Ways of pharmacological correction of pulmonary hypertension: Over the last decade pharmacotherapy of PH has been developing rapidly, and the introduction of modern methods of treatment, especially for primary PAH, has led to positive results. However, despite the progress in treatment, the functional limitations and survival of patients remain unsatisfactory. Currently, there are two levels of treatment for pulmonary hypertension: primary and specific pathogenetic therapies. Primary therapy is aimed at the main cause of PH. It also includes supportive therapy. Pathogenetic therapy includes prostanoids, endothelin receptor antagonists, and phosphodiesterase-5 inhibitors. Tactics of therapy can be established on the basis of either clinical classification, or functional class. Prostanoids are a promising group of drugs for the treatment of pulmonary arterial hypertension (PAH), since they possess not only vasodilating, but also antiplatelet and antiproliferative actions. Therefore, it seems logical to use prostacyclin and its analogs to treat patients with various forms of PAH.
Peptide Antigen Concentration Modulates Digital NFAT1 Activation in Primary Mouse Naive CD8+ T Cells as Measured by Flow Cytometry of Isolated Cell Nuclei
Authors: Gallagher Michael P , Conley James M , Berg Leslie J 
Published: August 2018

Abstract
Circulating naive T cells exist in a quiescent state. After TCR contact with the cognate peptide presented by APCs in secondary lymphoid structures, T cells undergo a period of rapid transcriptional changes that set the stage for fate-determining effector or memory programming. We describe a novel method to analyze TCR signaling pathway activation in nuclei isolated from primary mouse naive T cells after stimulation with natural peptide Ags. We prelabeled cells with cell tracking dye to easily distinguish CD8+ T cell nuclei from APC nuclei by conventional flow cytometry. Using this approach, we observed clear digital activation of NFAT1 transcription factor in OT-I T cells stimulated with OVA peptide presented by bulk splenocytes. OVA concentration had discrete control over the fraction of the cells that translocated NFAT1, indicating that a distinct threshold amount of TCR signaling is required to switch on NFAT1 in naive T cells. This behavior was cell contact dependent and qualitatively more exact than the NFAT1 response in ionomycin-stimulated naive T cells. These data contribute to our understanding of the digital behavior of TCR signaling components documented in other studies and indicate how T cells might discriminate log-fold changes in Ag availability during an actual infection. Overall, these results highlight the potential of this coculture nuclei isolation protocol to address stimulation-dependent translocation of proteins in primary lymphocytes.
Comparison of selected anthropometric parameters and motor tests in male gravity cyclists and high school students
Authors: Siriški Damjan 
Published: August 2018

The objective of our study was to compare selected parameters of body composition and motor tests results obtained with measuring of two diverse groups – elite gravity cyclists and a control group of high school students. The study was conducted in 31 male gravity cyclists (16 technical gravity disciplines, 15 downhill gravity disciplines) and 14 male school students. Matiegka protocol was used to estimate body composition and somatotype, a battery of specific motor skills was used to determine motor skills of the two test groups.Downhill gravity cyclists proved significantly higher mesomorphy than the control group - downhill disciplines 5,3 (σ = 0,43), control group 4.7 (σ = 1,05), and significantly higher values of test results than control group in broad jump (downhill disciplines 228,2 cm σ = 20,1 cm; control group 192,4 cm, σ = 15,1 cm), back-broad jump test (downhill disciplines 118,6 cm, σ = 12,8 cm; control group 98,3 cm, σ = 13,5 cm) and high jump (downhill disciplines 61,1cm, σ = 11,9 cm; control group 51,5 cm, σ = 12,5 cm). Technical disciplines cyclists proved significantly higher values of test results than control group in broad jump (technical disciplines 214,5 cm σ = 18,2 cm; control group 192,4 cm, σ = 15,1 cm), rotation jump (technical disciplines 510°, σ = 25,4°; control group 430,2°, σ = 39,4) and high jump test (technical disciplines 112,6 cm, σ = 10,9 cm; control group 98,3 cm, σ = 13,5 cm).Differences in somatotype, body constitution and motoric tests relate with characteristics of training and use of specific training methods. In this study high level performance athletes were tested, therefore it could be helpful for riders and coaches to increase the efficiency of the training process.
« La violence n'est pas un concept »
Authors: Jahier Adrien 
Published: August 2018

Gérard Chaliand, géopolitologue, explique les raisons qui ont mené, d'une part, aux
échecs occidentaux dans les guerres irrégulières et, d'autre part, à la chute actuelle de
l'État islamique. Il critique également les inconsistances de la politique étrangère
américaine et française, ainsi que le rapport que cultive l'Occident avec la violence. Cet
entretien, effectué le 26 avril 2017, est l’occasion de revenir sur le parcours atypique
d’un homme. Né en 1934, Gérard Chaliand a arpenté le globe et ses conflits en étant
observateur-participant : de la Guinée-Bissau au Nord Viêt Nam, en passant par la Colombie,
il a également passé beaucoup de temps au Moyen-Orient, se rendant régulièrement en
Afghanistan, en Irak et en Syrie. Au-delà de la figure du géopolitologue « aventurier », il
y a également celle, moins connue, du poète, qui trouve refuge dans l’écriture face à
l’atrocité du conflit. Pour Gérard Chaliand, la violence n’est pas un concept, mais avant
tout une expérience de terrain, forcément dure.
Dieu n’a pas inventé le webdocumentaire : Réflexion ontologique sur la représentation du réel à l’écran
Authors: Beauparlant Sophie 
Published: August 2018

La question qui fonde notre réflexion est la suivante : de quelle façon le numérique affecte-t-il le statut ontologique du documentaire ? Afin de saisir les conditions d’existence du webdocumentaire, cet article interroge la nature indicielle de l’interface numérique et son impact sur l’interprétation des contenus documentaires. En prenant comme référence la notion de degré de documentarité de Gaudreault et Marion, nous cherchons à voir comment le dispositif interactif interfère dans la représentation du réel à l’écran.
La littérature à la dérive numérique
Authors: Agostini-Marchese Enrico 
Published: August 2018

L’opposition millénaire entre réel et imaginaire, inaugurée par Platon, est-elle
encore valable à l’époque du numérique ? Nous entendons questionner le positionnement
platonicien en nous appuyant paradoxalement sur l’art le moins réel d’après Platon
lui-même : la littérature. Nous montrerons, à travers un bref parcours historique de la
filiation qui de la flânerie baudelairienne en passant par la pratique situationniste de la
dérive, mène jusqu’à la littérature numérique contemporaine portant sur l’espace, comment
cette typologie de littérature, avec ses stratégies d’écriture, ses poétiques et ses
pratiques, peut déjouer cette opposition gravée dans notre pensée.
Poeticizing Ecology/Ecologizing Poetry: Reading Elizabeth Bishop’s “Poem” Ecologically
Authors: Spicer Kevin Andrew , McDermott Beth 
Published: August 2018

In “Poeticizing Ecology/Ecologizing Poetry: Reading Elizabeth Bishop’s ‘Poem’ Ecologically,” we argue that ecological poetry is a kind of ecopoetry that undergirds “nature poetry” and environmental/activist poetry. Ecological poetry is also best put into conversation with deconstruction. This argument, informed by Timothy Morton’s claim that “deconstruction and ecology should talk to one another,” entails challenging previous arguments about what counts as ecopoetry but also the status of the lyric in general. We synthesize James Longenbach’s position in The Resistance of Poetry with Nick Selby’s argument in “Ecopoetries in America” to examine the relationship between close reading and reading ecologically. Rather than an ethical stance perceived in the content of the poem, to read ecologically requires attention to form and linguistic indeterminacy, not only because deconstruction and ecology are alike, but also because poetry is comprised of language, the usage of which “revels in duplicity and disjunction.” Deconstruction is the best approach to divergent perspectives on nature, or the way a poem offers, in Nick Selby’s view, not a clear purchase or single overarching view, but “a struggle to get nature right.” We contend that to give space to alterity, to allow the otherness not only of nature but also of language itself in its capacity for referentiality is to expand the “marked” space of ecology (in the terms set forth by G. Spencer Brown’s Laws of Form). We support this claim with a reading of Bishop’s “Poem,” which we acknowledge as an atypical choice for what constitutes ecological poetry. A borderline ekphrastic poem, “Poem” allows us to talk not only about the space inherent in nature and language but between text and image, or poem and painting. What we find in our reading of Bishop’s “Poem” is a contingency between the poem and the painting, rather than a classical attempt of one to overpower the other, to speak for the other as the more authoritative sign. We find the uncanny or strange quality of Bishop’s ekphrastic approach to an amateurish painting that she calls “sketch” a way to further substantiate Morton’s claim about the relevance of deconstruction to ecology. Through our reading of the poem we argue that no entity completely coincides with itself because ecological thinking has helped us to see how every entity is shot-through with traces of the other; we ourselves are made up of other lifeforms; life is made up of nonlife. To think ecologically is to think the other within the self (especially including all the nonhuman others), within any entity whatsoever.
Genome-wide discovery of local RNA structural elements in Zika virus
Authors: Andrews Ryan J , Roche Julien , Moss Walter N 
Published: August 2018

In addition to encoding RNA primary structures, genomes also encode RNA secondary and tertiary structures that play roles in gene regulation and, in the case of RNA viruses, genome replication. Methods for the identification of functional RNA structures in genomes typically rely on scanning analysis windows, where multiple partially-overlapping windows are used to predict RNA structures and folding metrics to deduce regions likely to form functional structure. Separate structural models are produced for each window, where the step size can greatly affect the returned model. This makes deducing unique local structures challenging, as the same nucleotides in each window can be alternatively base paired. In the presented approach, all base pairs from all analysis windows are considered and weighted by favorable folding metrics throughout all windows. This results in unique base pairing throughout the genome and the generation of local regions/structures that can be ranked by their propensity to form unusually thermodynamically stable folds.
This approach was applied to the Zika virus (ZIKV) genome. ZIKV is linked to a variety of neurological ailments including microcephaly and Guillain-Barré syndrome and its (+)-sense RNA genome encodes two, previously described, functionally essential structured RNA regions. Our approach is able to successfully identify and model the structures of these regions, while also finding additional regions likely to form functional RNA structures throughout the viral polyprotein coding region. All data for the ZIKV genome have been archived at the RNAStructuromeDB, a repository of RNA folding data for humans and their pathogens.
ДИНАМИКА ФАЗОВЫХ ПРЕВРАЩЕНИЙ В СНЕЖНОЙ МАССЕ, СОДЕРЖАЩЕЙ ЧАСТИЦЫ ВОДОРАСТВОРИМЫХ СОЛЕЙ, "Журнал физической химии"
Authors: Зеленко В. Л. , Хейфец Л. И. , Орлов Ю.Н. , Воскресенский Н. М. 
Published: August 2018

Предлагаемая работа основывается на макрокинетическом подходе к описанию динамики фазовых превращений в снежной массе, содержащей частицы водорастворимых солей. Получены уравнения, описывающие скорость растворения гранул соли, изменение фазового состава снежной массы и температуры в условиях теплообмена с термостатированной поверхностью. Для проверки теоретических выводов была создана экспериментальная установка, моделирующая изменение состояния снежной массы, расположенной на изотермической поверхности. Экспериментальные наблюдения за изменением температуры снежной массы сопоставлены с теоретическими расчетами. Разработанная математическая модель может использоваться для прогнозирования состояния снежной массы на дорогах, обработанных противогололедным материалом, или для анализа состояния снежных масс на склонах, содержащих включения водорастворимых солей.