bluuebunny/crossref_metadata_2025_split huggingface dataset:
PENGARUH BEBERAPA JENIS SITOKININ PADA MULTIPLIKASI TUNAS ANGGREK <i>Vanda douglas</i> SECARA IN VITRO
Authors: Karyanti Karyanti 
Published: December 2017

The Effect of Several Types of Cytokinin on Shoot Multiplication of Vanda douglas Orchid In VitroThe study was aimed to determine the response of Vanda douglas orchid on shoot-multiplication media to different cytokinin concentrations in vitro. A completely randomized design experiment was employed with one factor cytokinin, in which the cytokinins used were TDZ (thidiazuron), BAP (6-Benzylaminopurine) and kinetin at the concentrations of 0, 0.5, 1, and 1.5 mg/L. The results showed that kinetin 0.5 mg/L was the best concentration for shoot formation, occuring on average at 14.88 days after planting; while TDZ 0.5 mg/L was the best concentration for increasing the height of the plant, being on average 0.53 cm. TDZ at 0.5 mg/L concentration also had positive effect on shoot and leaf formation, which resulted in the highest number of shoots and leaves. The average number of shoots was 8.00 buds, and the average number of leaves was 12.25 sheets. Keywords: Vanda douglas, thidiazuron, BAP, kinetin, shoots multiplication ABSTRAKPenelitian ini bertujuan untuk mengetahui respon anggrek Vanda douglas terhadap media perbanyakan tunas pada beberapa konsentrasi jenis sitokinin secara in vitro. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) dengan satu faktor, yaitu sitokinin. Sitokinin yang digunakan adalah TDZ (thidiazuron), BAP (6-Benzylaminopurine) dan kinetin, dengan konsentrasi 0, 0,5, 1, dan 1,5 mg/L. Hasil penelitian menunjukkan bahwa pemberian kinetin 0,5 mg/L menunjukkan hasil terbaik pada peubah waktu pembentukan tunas, dengan rata-rata 14,88 hari setelah tanam. Sedangkan konsentrasi TDZ 0,5 mg/L merupakan jenis sitokinin dan konsentrasi terbaik terhadap pertambahan tinggi tanaman, dengan rata-rata 0,53 cm. TDZ dengan konsentrasi 0,5 mg/L juga berpengaruh positif terhadap pertumbuhan tunas dan daun, dengan menghasilkan jumlah tunas tertinggi dan jumlah daun terbanyak. Rata-rata jumlah tunas adalah 8,00 tunas, dan rata-rata jumlah daun adalah 12,25 helai.Kata Kunci: Vanda douglas, thidiazuron, BAP, kinetin, perbanyakan tunasReceived: 19 June 2017 Accepted: 02 July 2017 Published: 12 July 2017
The Constant Average Relationship between Dust-obscured Star Formation and Stellar Mass from z = 0 to z = 2.5
Authors: Whitaker Katherine E. , Pope Alexandra , Cybulski Ryan , Casey Caitlin M. , Popping Gergö , Yun Min S. 
Published: December 2017

Abstract
The total star formation budget of galaxies consists of the sum of the unobscured star formation, as observed in the rest-frame ultraviolet (UV), together with the obscured component that is absorbed and re-radiated by dust grains in the infrared. We explore how the fraction of obscured star formation depends on stellar mass for mass-complete samples of galaxies at

. We combine GALEX and WISE photometry for SDSS-selected galaxies with the 3D-HST treasury program and Spitzer/MIPS 24 μm photometry in the well-studied five extragalactic Cosmic Assembly Near-IR Deep Extragalactic Legacy Survey (CANDELS) fields. We find a strong dependence of the fraction of obscured star formation (f
obscured = SFRIR/SFRUV+IR) on stellar mass, with remarkably little evolution in this fraction with redshift out to z = 2.5. 50% of star formation is obscured for galaxies with log(M/M
⊙) = 9.4; although unobscured star formation dominates the budget at lower masses, there exists a tail of low-mass, extremely obscured star-forming galaxies at

. For log(M/M
⊙) > 10.5, >90% of star formation is obscured at all redshifts. We also show that at fixed total SFR,

is lower at higher redshift. At fixed mass, high-redshift galaxies are observed to have more compact sizes and much higher star formation rates, gas fractions, and hence surface densities (implying higher dust obscuration), yet we observe no redshift evolution in

with stellar mass. This poses a challenge to theoretical models, where the observed compact sizes at high redshift seem in tension with lower dust obscuration.
Action Dynamics of the Local Supercluster
Authors: Shaya Edward J. , Tully R. Brent , Hoffman Yehuda , Pomarède Daniel 
Published: December 2017

Abstract
The fully nonlinear gravitationally induced trajectories of a nearly complete set of galaxies, groups, and clusters in the Local Supercluster are constructed in a numerical action method model constrained by data from the CosmicFlows survey and various distance indicators. We add the gravity field due to inhomogeneities external to the sample sphere by making use of larger-scale peculiar flow measurements. Assignments of total masses were made to find the best overall set of mutual attractions, as determined by a goodness criterion based on present-day radial velocities, individually for the Virgo Cluster, M31, and the Milky Way (MW), and via a mass-to-light ratio relationship for other masses. The low median chi-square found indicates that the model fits the present-day velocity flow well, but a slightly high mean chi-square may indicate that some masses underwent complex orbits. The best fit, when setting the value of H
0 to the CosmicFlows value of 75 km s−1 Mpc−1 and the WMAP value for Ω
m
= 0.244 consistent with that H
0, occurs with the following parameters: Ωorphan = 0.077 ± 0.016,

(L
10 is the K-band luminosity in units of 1010
L
☉), a Virgo mass of 6.3 ± 0.8 × 1014
M
☉ (M/L

K
= 113 ± 15 M
☉/L
☉), and a mass for the MW plus M31 of 5.15 ± 0.35 × 1012
M
☉. The best constant mass-to-light ratio is M/L

K
= 58 ± 3 M
☉/L
☉. The Virgocentric turnaround radius is 7.3 ± 0.3 Mpc. We explain several interesting trends in peculiar motions for various regions now that we can construct the 3D orbital histories.
The Hard X-Ray Emission of the Blazar PKS 2155–304
Authors: Gaur Haritma , Chen Liang , Misra R. , Sahayanathan S. , Gu M. F. , Kushwaha P. , Dewangan G. C. 
Published: December 2017

Abstract
The synchrotron peak of the X-ray bright High Energy Peaked Blazar PKS 2155–304 occurs in the UV-EUV region and hence its X-ray emission (0.6–10 keV) lies mostly in the falling part of the synchrotron hump. We aim to study the X-ray emission of PKS 2155–304 during different intensity states in 2009–2014 using the XMM-Newton satellite. We studied the spectral curvature of all of the observations to provide crucial information on the energy distribution of the nonthermal particles. Most of the observations show curvature or deviation from a single power law and can be well modeled by a log parabola model. In some of the observations, we find spectral flattening after 6 keV. In order to find the possible origin of the X-ray excess, we built the Multiband Spectral Energy distribution. We find that the X-ray excess in PKS 2155–304 is difficult to fit in the one zone model but, could be easily reconciled in the spine/layer jet structure. The hard X-ray excess can be explained by the inverse Comptonization of the synchrotron photons (from the layer) by the spine electrons.
Direct Observations of Different Sunspot Waves Influenced by Umbral Flashes
Authors: Sharma Aishawnnya , Gupta G. R. , Tripathi Durgesh , Kashyap V. , Pathak Amit 
Published: December 2017

Abstract
We report the simultaneous presence of chromospheric umbral flashes and associated umbral waves, and propagating coronal disturbances, in a sunspot and related active region. We have analyzed time–distance maps obtained using the observations from the Atmospheric Imaging Assembly on board the Solar Dynamics Observatory. These maps show the simultaneous occurrence of different sunspot oscillations and waves such as umbral flashes, umbral waves, and coronal waves. Analysis of the original light curves, i.e., without implementing any Fourier filtering on them, shows that the amplitudes of different sunspot waves observed at different atmospheric layers change in synchronization with the light curves obtained from the umbral flash region, thus demonstrating that these oscillations are modulated by umbral flashes. This study provides the first observational evidence of the influence of sunspot oscillations within the umbra on other sunspot waves extending up to the corona. The properties of these waves and oscillations can be utilized to study the inherent magnetic coupling among different layers of the solar atmosphere above sunspots.
The Formation of Super-Earths by Tidally Forced Turbulence
Authors: Yu Cong 
Published: December 2017

Abstract
The Kepler observations indicate that many exoplanets are super-Earths, which brings about a puzzle for the core-accretion scenario. Since observed super-Earths are in the range of critical mass, they accrete gas efficiently and become gas giants. Theoretically, super-Earths are predicted to be rare in the core-accretion framework. To resolve this contradiction, we propose that the tidally forced turbulent diffusion may affect the heat transport inside the planet. Thermal feedback induced by turbulent diffusion is investigated. We find that the tidally forced turbulence generates pseudo-adiabatic regions within radiative zones, which pushes the radiative-convective boundaries inward. This decreases the cooling luminosity and enhances the Kelvin–Helmholtz (KH) timescale. For a given lifetime of protoplanetary disks (PPDs), there exists a critical threshold for the turbulent diffusivity, ν
critical. If ν
turb > ν
critical, the KH timescale is longer than the disk lifetime and the planet becomes a super-Earth, rather than a gas giant. We find that even a small value of turbulent diffusion has influential effects on the evolution of super-Earths. The ν
critical increases with the core mass. We further ascertain that, within the minimum-mass extrasolar nebula, ν
critical increases with the semimajor axis. This may explain the feature that super-Earths are common in inner PPD regions, while gas giants are common in outer PPD regions. The predicted envelope mass fraction is not fully consistent with observations. We discuss physical processes, such as late core assembly and mass-loss mechanisms, that may be operating during super-Earth formation.
Electron Capture Supernovae from Close Binary Systems
Authors: Poelarends Arend J. T. , Wurtz Scott , Tarka James , Adams L. Cole , Hills Spencer T. 
Published: December 2017

Abstract
We present the first detailed study of the Electron Capture Supernova Channel (ECSN Channel) for a primary star in a close binary star system. Progenitors of ECSN occupy the lower end of the mass spectrum of supernova progenitors and are thought to form the transition between white dwarf progenitors and core-collapse progenitors. The mass range for ECSN from close binary systems is thought to be wider than the range for single stars, because of the effects of mass transfer on the helium core. Using the MESA stellar evolution code, we explored the parameter space of initial primary masses between 8 and

, using a large grid of models. We find that the initial primary mass and the mass transfer evolution are important factors in the final fate of stars in this mass range. Mass transfer due to Roche lobe overflow during and after carbon burning causes the core to cool down so that it avoids neon ignition, even in helium-free cores with masses up to

, which in single stars would ignite neon. If the core is able to contract to high enough densities for electron captures to commence, we find that, for the adopted Ledoux convection criterion, the initial mass range for the primary to evolve into an ECSN is between 13.5 and

. The mass ratio, initial period, and mass-loss efficiency only marginally affect the predicted ranges.
Alternative Splicing Transcripts of Zebrafish LGP2 Gene Differentially Contribute to IFN Antiviral Response
Authors: Zhang Qi-Min , Zhao Xiang , Li Zhi , Wu Min , Gui Jian-Fang , Zhang Yi-Bing 
Published: December 2017

Abstract
In mammals, RIG-I like receptors (RLRs) RIG-I and melanoma differentiation–associated gene 5 (MDA5) sense cytosolic viral RNA, leading to IFN antiviral response; however, LGP2 exhibits controversial functions. The same happens to fish LGP2. In this study we report that three zebrafish LGP2 splicing transcripts, a full-length LGP2, and two truncating variants, LGP2v1 and LGP2v2, play distinct roles during IFN antiviral response. Overexpression of the full-length LGP2 not only potentiates IFN response through the RLR pathway, in the absence or presence of poly(I:C) at limited concentrations, but also inhibits IFN response by relative high concentrations of poly(I:C) through functional attenuation of signaling factors involved in the RLR pathway; however, LGP2v1 and LGP2v2 only retain the inhibitory role. Consistently, LGP2 but not LGP2v1 and LGP2v2 confers protection on fish cells against spring viremia of carp virus (SVCV) infection and at limited expression levels, LGP2 exerts more significant protection than either RIG-I or MDA5. Further data suggest that in the early phase of SVCV infection, LGP2 functions as a positive regulator but along with SVCV replicating in cells up to a certain titer, which leads to a far more robust expression of IFN, LGP2 switches to a negative role. These in vitro results suggest an ingenious mechanism where the three zebrafish LGP2 splicing transcripts work cooperatively to shape IFN antiviral responses.
Role of Low-dose Human Chorionic Gonadotropin in Follicular Phase for Thin Endometrium in Frozen Embryo Replacement Cycles in in vitro Fertilization/Intracytoplasmic Sperm Injection Patients: A Pilot Study
Authors: Shankar Kundavi , Nigam Shipra , Varma Thankam R 
Published: December 2017

ABSTRACTIntroductionOne of the most challenging problems inin vitro fertilization(IVF) is patient with thin endometrium. The objective of the study was to ascertain whether daily human chorionic gonadotropin (hCG) for 7 days with estrogen in hormone replacement frozen embryo transfer (FET) cycles during follicular phase can increase the endometrial thickness (ET) and reduce the cancellation of cycles.Materials and methodsTwenty-five infertile patients with resistant thin endometrium who had antagonist protocol and planned for frozen embryo replacement were recruited. These patients had prior attempts to thicken their endometrium which had failed. All the patients received estrogen daily from D2/3 of cycle. On day 8 or 9 of estrogen administration, 200 IU of hCG was given daily for 7 days. After 7 days on hCG priming (D14/15), ET was measured and progesterone was started accordingly. Identification of an intrauterine gestational sac with fetal heart beat by transvaginal ultrasonography constituted clinical pregnancy.ResultsMean ET increased significantly from 5.84 to 7.61 mm (p < 0.01). About 72% of patients had more than 20% improvement in their ET after hCG priming. About 76% achieved an ET more than 7 mm. Overall, 50% became pregnant. The ongoing pregnancy rate was 40%.ConclusionA total of 200 IU hCG endometrial priming for 7 days in the proliferative phase of hormone replacement cycles for FET is a highly promising approach to thicken thin endometrium with failed prior attempts.How to cite this articleNigam S, Shankar K, Varma TR. Role of Low-dose Human Chorionic Gonadotropin in Follicular Phase for Thin Endometrium in Frozen Embryo Replacement Cycles inin vitro Fertilization/Intracytoplasmic Sperm Injection Patients: A Pilot Study. Int J Infertil Fetal Med 2017;8(3):101-105.
Self-Awareness and Recovery of Independence With Strategy Training
Authors: Skidmore Elizabeth R. , Swafford Melissa , Juengst Shannon B. , Terhorst Lauren 
Published: December 2017

Abstract
OBJECTIVE. Poor self-awareness co-occurs with cognitive impairments after stroke and may influence independence in daily activities. Strategy training promotes independence after stroke, but poor awareness may attenuate treatment response. We examined the degree to which awareness status affected changes in independence attributed to strategy training.
METHOD. We conducted a secondary analysis of 30 participants with cognitive impairments after acute stroke randomized to strategy training or attention control in addition to typical inpatient rehabilitation. We measured awareness with the Self-Awareness of Deficits Interview and independence with the FIM™. Data were analyzed using general linear models.
RESULTS. Poor awareness attenuated improvements in independence over time, F(3, 55) = 3.04, p = .038. Strategy training promoted greater improvements in independence over time relative to attention control, F(3, 55) = 5.93, p = .002. However, the interaction between awareness and intervention was not significant, F(1, 19) = 0.025, p = .877.
CONCLUSION. Awareness status may not affect the response to strategy training, indicating that strategy training may benefit people with poor awareness.
Long-term measurements (2010–2014) of carbonaceous aerosol and carbon monoxide at the Zotino Tall Tower Observatory (ZOTTO) in central Siberia
Authors: Mikhailov Eugene F. , Mironova Svetlana , Mironov Gregory , Vlasenko Sergey , Panov Alexey , Chi Xuguang , Walter David , Carbone Samara , Artaxo Paulo , Heimann Martin , Lavric Jost , Pöschl Ulrich , Andreae Meinrat O. 
Published: December 2017

Abstract. We present long-term (5-year) measurements of particulate matter with an upper diameter limit of ∼ 10 µm (PM10), elemental carbon (EC), organic carbon (OC), and water-soluble organic carbon (WSOC) in aerosol filter samples collected at the Zotino Tall Tower Observatory in the middle-taiga subzone (Siberia). The data are complemented with carbon monoxide (CO) measurements. Air mass back trajectory analysis and satellite image analysis were used to characterise potential source regions and the transport pathway of haze plumes. Polluted and background periods were selected using a non-parametric statistical approach and analysed separately. In addition, near-pristine air masses were selected based on their EC concentrations being below the detection limit of our thermal–optical instrument. Over the entire sampling campaign, 75 and 48 % of air masses in winter and in summer, respectively, and 42 % in spring and fall are classified as polluted. The observed background concentrations of CO and EC showed a sine-like behaviour with a period of 365 ± 4 days, mostly due to different degrees of dilution and the removal of polluted air masses arriving at the Zotino Tall Tower Observatory (ZOTTO) from remote sources. Our analysis of the near-pristine conditions shows that the longest periods with clean air masses were observed in summer, with a frequency of 17 %, while in wintertime only 1 % can be classified as a clean. Against a background of low concentrations of CO, EC, and OC in the near-pristine summertime, it was possible to identify pollution plumes that most likely came from crude-oil production sites located in the oil-rich regions of Western Siberia. Overall, our analysis indicates that most of the time the Siberian region is impacted by atmospheric pollution arising from biomass burning and anthropogenic emissions. A relatively clean atmosphere can be observed mainly in summer, when polluted species are removed by precipitation and the aerosol burden returns to near-pristine conditions.
Capturing temporal and spatial variability in the chemistry of shallow permafrost ponds
Authors: Morison Matthew Q. , Macrae Merrin L. , Petrone Richard M. , Fishback LeeAnn 
Published: December 2017

Abstract. Across the circumpolar north, the fate of small freshwater ponds and lakes (< 1 km2) has been the subject of scientific interest due to their ubiquity in the landscape, capacity to exchange carbon and energy with the atmosphere, and their potential to inform researchers about past climates through sediment records. A changing climate has implications for the capacity of ponds and lakes to support organisms and store carbon, which in turn has important feedbacks to climate change. Thus, an improved understanding of pond biogeochemistry is needed. To characterize spatial and temporal patterns in water column chemistry, a suite of tundra ponds were examined to answer the following research questions: (1) does temporal variability exceed spatial variability? (2) If temporal variability exists, do all ponds (or groups of ponds) behave in a similar temporal pattern, linked to seasonal hydrologic drivers or precipitation events? Six shallow ponds located in the Hudson Bay Lowlands region were monitored between May and October 2015 (inclusive, spanning the entire open-water period). The ponds span a range of biophysical conditions including pond area, perimeter, depth, and shoreline development. Water samples were collected regularly, both bimonthly over the ice-free season and intensively during and following a large summer storm event. Samples were analysed for nitrogen speciation (NO3−, NH4+, dissolved organic nitrogen) and major ions (Cl−, SO42−, K+, Ca2+, Mg2+, Na+). Across all ponds, temporal variability (across the season and within a single rain event) exceeded spatial variability (variation among ponds) in concentrations of several major species (Cl−, SO42−, K+, Ca2+, Na+). Evapoconcentration and dilution of pond water with precipitation and runoff inputs were the dominant processes influencing a set of chemical species which are hydrologically driven (Cl−, Na+, K+, Mg2+, dissolved organic nitrogen), whereas the dissolved inorganic nitrogen species were likely mediated by processes within ponds. This work demonstrates the importance of understanding hydrologically driven chemodynamics in permafrost ponds on multiple scales (seasonal and event scale).
The Work of the Literary Critic in the Age of Big Data
Authors: Aquilina Mario 
Published: December 2017

Abstract
I argue that seven major claims arise from a consideration of the emergence of “the age of big data [that] is coming of age” in literary studies and that is “making it suddenly possible to see more and learn faster” (Lohr 2013:3). These claims are presented, often provocatively, under the following headings: (1) Big and distant are better than small and close; (2) Burn the canon; (3) The future of literary studies is information not evaluation; (4) Machine reading extends human reading; (5) Let's be scientific, above all else; (6) What matters is form; (7) The beauty is in the analysis. Each of these seven claims is critically assessed, with the work of Franco Moretti and Matthew L. Jockers providing the key points of focus in a discussion that seeks to engage with the foundational theoretical assumptions underpinning such approaches. Big data literary studies do not simply promise to do better than what was done before by literary criticism but to radically challenge its key assumptions and objectives, especially in terms of the relation between the literary scholar and his object of study, literature. The implications of this shift for our study of literature are discussed in detail.