bluuebunny/crossref_metadata_2025_split huggingface dataset:
Silicon stable isotope fractionation between metal and silicate at high-pressure, high-temperature conditions as a tracer of planetary core formation
Authors: Kempl J. , Vroon P.Z. , van der Wagt B. , Zinngrebe E. , Frost D.J. , van Westrenen W. 
Published: May 2016

AbstractThe largest differentiation event in Earth and other terrestrial planets was the high-pressure, high-temperature process of metal core segregation from a silicate mantle. The abundant element silicon (Si) can be partially sequestered into the metallic core during metal–silicate differentiation, depending on pressure, temperature and planetary oxidation state. Knowledge of the Si content of a planet's core can constrain the conditions of core formation, but in the absence of direct samples from planetary cores, quantifying core Si content is challenging. One relatively new tool to study core formation in terrestrial planets is based on combining measurements of the Si stable isotopic composition of planetary crust and mantle samples with measurements of the Si stable isotope fractionation between metal and silicate at high-temperature and high-pressure conditions. In this study we present the results of a small set of high-pressure, high-temperature (HPT) experiments and combine these with a review of literature data to investigate how the Si isotope fractionation behaviour between metal and silicate varies as a function specifically of experimental run time and temperature. We show that although there is no debate about the sign of fractionation, absolute values for Si isotope fractionation between metal and silicate are difficult to constrain because the experimental database remains incomplete, and because Si isotopic measurements of metals in particular suffer from the absence of a true inter-laboratory comparison. We conclude that in order to derive accurate quantitative estimates of the Si content of the core of the Earth or other planets a wide range of additional experiments will be required.
Provenance signals in metaturbidites of the Paleoproterozoic greenstone belt of the Guiana Shield in Suriname
Authors: Naipal R. , Kroonenberg S.B. 
Published: May 2016

AbstractThe sedimentological, metamorphic, petrographic and geochemical characteristics of the Armina Formation, part of the Paleoproterozoic Greenstone Belt of Suriname in South America, are described, based on field, geochemical and petrographic evidence obtained through fieldwork along the Marowijne River and study of diamond drill cores from Rosebel Gold Mine (RGM). The metagreywackes show characteristic features of deposition by turbidity currents: coarse-grained, poorly sorted graded greywackes, covered by fine-grained, parallel-laminated phyllitic beds, often with convolute structures and climbing ripples. Their immature character and composition suggest deposition in an arc-trench environment. In the Marowijne River three different facies of metagreywackes are distinguished: (1) the greyish Bonnidoro Falls facies, characterised by common red millimetre-sized pseudomorphs after siderite in the finer beds, (2) the green Paroe Tabiki metagreywacke facies, with decimetre-sized calcsilicate nodules, both metamorphosed in the lower greenschist facies with chlorite as the main mafic mineral, and (3) the grey Armina Falls metagreywacke facies, geochemically similar to the Bonnidoro type but of higher metamorphic grade with biotite as the main mafic mineral. The metagreywackes from the Marowijne River show a predominance of quartz, plagioclase and lithic (tonalitic) clasts, suggesting exhumation of tonalite–trondhjemite–granodiorite plutons before deposition of the turbidites. There is a slight increase in maturity from (1) to (3), suggesting increasing weathering in the source areas. The metagreywackes of the RGM (JZone) have a predominantly metavolcanic origin, suggesting that they have a different provenance area than the Marowijne metagreywackes. Geochemically the spread in composition within each facies is larger than between the facies because of the wide range in grain sizes in each turbidite sequence. A large part of the rocks from the RGM, classified by previous authors as arenites, are geochemically and petrographically metagreywackes. Only a few RGM samples are real arenites, and plot as a separate cluster in geochemical factor score plots because of their low Fe and Na contents.
The role of rumen-protected choline in hepatic function and performance of transition dairy cows
Authors: Shahsavari Arash , D’Occhio Michael J. , Al Jassim Rafat 
Published: May 2016

AbstractHigh-producing dairy cows enter a period of negative energy balance during the first weeks of lactation. Energy intake is usually sufficient to cover the increase in energy requirements for fetal growth during the period before calving, but meeting the demand for energy is often difficult during the early stages of lactation. A catabolic state predominates during the transition period, leading to the mobilisation of energy reserves (NEFA and amino acids) that are utilised mainly by the liver and muscle. Increased uptake of mobilised NEFA by the liver, combined with the limited capacity of hepatocytes to either oxidise fatty acids for energy or to incorporate esterified fatty acids into VLDL results in fatty liver syndrome and ketosis. This metabolic disturbance can affect the general health, and it causes economic losses. Different nutritional strategies have been used to restrict negative effects associated with the energy challenge in transition cows. The provision of choline in the form of rumen-protected choline (RPC) can potentially improve liver function by increasing VLDL exportation from the liver. RPC increases gene expression of microsomal TAG transfer protein and APOB100 that are required for VLDL synthesis and secretion. Studies with RPC have looked at gene expression, metabolic hormones, metabolite profiles, milk production and postpartum reproduction. A reduction in liver fat and enhanced milk production has been observed with RPC supplementation. However, the effects of RPC on health and reproduction are equivocal, which could reflect the lack of sufficient dose–response studies.
Phylogenetic relationships among reindeer lichens of North America
Authors: ATHUKORALA Sarangi N. P. , PINO-BODAS Raquel , STENROOS Soili , AHTI Teuvo , PIERCEY-NORMORE Michele D. 
Published: May 2016

AbstractCladoniais one of the largest lichen-forming ascomycete genera. It was formerly divided into ten sections, three of which,Crustaceae(Cladina),Tenues, andImpexae, are called the reindeer lichens. While previous studies have elucidated the relationships between species and sections, they often examined only one or a few specimens of each species in the analysis. This study examined the monophyly of selected members of sectionsCrustaceae,Tenues, andImpexaeand their relationships in the genusCladoniausing the internal transcribed spacer region of the nuclear ribosomal DNA (ITS rDNA) and the mitochondrial small subunit gene of the mitochondrial ribosomal DNA (mtSSU). The phylogenetic tree contained four clades, two representing species in sectionImpexae, one representing species that belong to sectionsCrustaceaeandTenues, and one clade withC. arbusculaand related species. Five of 22 species,C. pycnoclada,C. stellaris,C. evansii,C. ciliataandC. subtenuis, showed monophyly in the phylogenetic tree; some of these 5 species have been shown previously to be monophyletic. The thallus branching pattern was interpreted as an important heritable character using the mtSSU network. Three duplets of paraphyletic species were further examined using ITS rDNA haplotype networks and AMOVA analysis. The results for the species duplets showed some mixing of haplotypes but the AMOVA analysis provided support for species separation within the duplets. While the evidence supports distinct species, further study is needed to conclusively show separate species in these duplets.
Two new lecanoroid Caloplaca (Teloschistaceae) species from gneiss inselbergs in equatorial Brazil, with a key to tropical lecanoroid species of Caloplaca s. lat.
Authors: APTROOT André , CÁCERES Marcela Eugenia da Silva 
Published: May 2016

AbstractGneiss inselbergs in the Caatinga region of Ceará in equatorial Brazil are literally covered with a wide diversity of caloplacoid lichens. This includes two closely related new saxicolous species of Caloplaca, both with the aspect of a Lecanora of the subfusca-aggregate: C. lecanorocarpa has a grey areolate bullate thallus with atranorin on a black prothallus, grey thalline apothecium margin, sessile apothecia with glossy dark brown disc, and ascospores of 10–12×5·0–5·5 μm, with a 5·0–5·5 μm thick septum; and the similar, related C. lecapustulata which mainly differs by the rimose thallus with irregular mushroom-shaped pustules. The phylogenetic position of the two new species has been assessed to be within the Caloplacoideae. A key to all tropical lecanoroid Caloplaca species is provided.
Micarea soraliferasp. nov., a new sorediate species in theM. prasinagroup
Authors: GUZOW-KRZEMIŃSKA Beata , CZARNOTA Paweł , ŁUBEK Anna , KUKWA Martin 
Published: May 2016

AbstractMicarea soraliferasp. nov., a new sorediate species belonging to theM. prasinagroup, is characterized by soralia developing directly from the endoxylic thallus or small external areoles, as well as the presence of micareic acid. Phylogenetic analyses of mtSSU rDNA sequences have shown that its closest relative isM. subviridescens. ITS rDNA sequence, a marker proposed as the universal barcoding region of fungi, was generated from the holotype.
A new species ofPorpidiafrom China
Authors: ZHAO Xiang-Xiang , ZHANG Lu-Lu , MIAO Cong-Cong , ZHAO Zun-Tian 
Published: May 2016

AbstractPorpidia hyposticticais described as a new species; it has a white to grey-white thallus with yellow, oxidized patches near the margin, and contains hypostictic acid as the only major compound. A phylogenetic analysis is provided which is based on ITS sequences using ML and Bayesian analyses. The phylogeny supported the separation of the new species from other species. A key to all known ChinesePorpidiaspecies is provided.
Japan and the Asia-Pacific in the 1970s: From an economic to a ‘heart-to-heart’ relationship
Authors: CHIAPPONI CHIARA 
Published: May 2016

AbstractThis article deals with the relationships Japan has built in the Asia-Pacific region in the aftermath of decolonization. In post-war historic studies, the emphasis has been on issues such as paying reparations and providing economic assistance as Japan's means of rising to become a world power, at least from an economic point of view. The article explores, from a historical perspective, Japan's efforts with regard to development aid, but focuses on its transition to taking a more active role in Asia. This became more evident from the mid-1970s, when some crucial events related to the Cold War altered the the balance of power in the world. Hence, it investigates how Japan faced and took advantage of the situation in this area, and how it modified its approach to providing foreign assistance to Southeast Asia. Finally, it meditates upon the meaning of the Fukuda Doctrine as an enhancement of Tokyo's regional policy.
Krishna's Curse in the Age of Global Tourism: Hindu pilgrimage priests and their trade
Authors: AUKLAND KNUT 
Published: May 2016

AbstractThis article explores the strategies ofpandas (Hindu pilgrimage priests) in Vrindavan, relating changes in their trade (pandagiri) to tourism. These changes are the result of thepandas’ creative adjustments to shifting travel patterns that affect their market niche. Utilizing audio-recordings of thepandas’ guided tours, the article first portrays howpandas acquire ritual income from pilgrims by ‘inspiring’ donations of which they get a percentage. While commercial interests and economic conditions have always been crucial in shaping and perpetuating pilgrimage institutions and practices, global tourism has become an increasingly significant factor.Pandas all over India modify their services while the traditional exchange model (jajmanisystem) wanes. Changing travel patterns have made the guided tour a crucial component in the operation of Hindu pilgrimage. Vrindavanpandas have therefore turned into guides conducting religious sightseeing tours (darshan yatra). These tours are core to the new strategy for acquiring ritual income. To secure clients,pandas build connections with travel agencies and drivers and, in some cases, establish their own travel agencies that combine priestly and tourism services. Thepandas’ own understandings of their methods and contemporary travel trends further reflect the dynamic interplay between pilgrimage and tourism in India.
Are we working to save the species our children want to protect? Evaluating species attribute preferences among children
Authors: Frew Kristin , Peterson M. Nils , Stevenson Kathryn 
Published: May 2016

AbstractAs conservation resources decline and numbers of threatened species increase, prioritizing species for conservation is increasingly important, and prioritizing based on attributes may be the most efficient approach. Despite the importance of biodiversity as a legacy to future generations, children's preferences for species attributes have never been considered. We surveyed 3rd and 5th grade students, typically 8–10 years old, in North Carolina, USA, to determine how children prioritize conservation of species based on attributes. We asked the students to rank five species attributes, allocate money to species with each attribute, and choose between each species attribute and endemism in terms of their importance for conservation. Children prioritized species that are important in nature and those whose numbers are declining over species with other attributes, whereas research suggests that adults prioritize endemic species over most other types. Our results suggest children prioritize biodiversity conservation differently from adults, and in ways that may be more conducive to biodiversity conservation in cases where endemism is not directly related to species endangerment, and we suggest the perspectives of children be considered more fully within biodiversity conservation.
Crop raiding by wild mammals in Ethiopia: impacts on the livelihoods of smallholders in an agriculture–forest mosaic landscape
Authors: Ango Tola Gemechu , Börjeson Lowe , Senbeta Feyera 
Published: May 2016

AbstractWe assessed the impacts of crop raiding by wild mammals on the livelihoods of smallholding farmers in south-western Ethiopia. Data were generated through participatory field mapping, interviews and focus groups. The results indicated that wild mammals, mainly olive baboonsPapio anubisand bush pigsPotamochoerus larvatus, were raiding most crops cultivated in villages close to forests. In addition to the loss of crops, farmers incurred indirect costs in having to guard and cultivate plots far from their residences, sometimes at the expense of their children's schooling. Raiding also undermined farmers’ willingness to invest in modern agricultural technologies. Various coping strategies, including guarding crops and adapting existing local institutions, were insufficient to reduce raiding and its indirect impacts on household economies to tolerable levels, and were undermined by existing policies and government institutions. It is essential to recognize wild mammal pests as a critical ecosystem disservice to farmers, and to identify ways to mitigate their direct and indirect costs, to facilitate local agricultural development and livelihood security, and integrate wildlife conservation and local development more fully in agriculture–forest mosaic landscapes.
A dynamic semisupervised feedforward neural network clustering
Authors: Asadi Roya , Kareem Sameem Abdul , Asadi Shokoofeh , Asadi Mitra 
Published: May 2016

AbstractAn efficient single-layer dynamic semisupervised feedforward neural network clustering method with one epoch training, data dimensionality reduction, and controlling noise data abilities is discussed to overcome the problems of high training time, low accuracy, and high memory complexity of clustering. Dynamically after the entrance of each new online input datum, the code book of nonrandom weights and other important information about online data as essentially important information are updated and stored in the memory. Consequently, the exclusive threshold of the data is calculated based on the essentially important information, and the data is clustered. Then, the network of clusters is updated. After learning, the model assigns a class label to the unlabeled data by considering a linear activation function and the exclusive threshold. Finally, the number of clusters and density of each cluster are updated. The accuracy of the proposed model is measured through the number of clusters, the quantity of correctly classified nodes, and F-measure. Briefly, in order to predict the survival time, the F-measure is 100% of the Iris, Musk2, Arcene, and Yeast data sets and 99.96% of the Spambase data set from the University of California at Irvine Machine Learning Repository; and the superior F-measure results in between 98.14% and 100% accuracies for the breast cancer data set from the University of Malaya Medical Center. We show that the proposed method is applicable in different areas, such as the prediction of the hydrate formation temperature with high accuracy.
Effect of temperature during embryonic development and first feeding of Trichogaster leeri larvae
Authors: Pereira Samuel Louzada , de Andrade Dalcio Ricardo , Radael Marcella Costa , Fosse Filho João Carlos , de Azevedo Rafael Vieira , Mattos Douglas da Cruz , Vidal Junior Manuel Vazquez 
Published: May 2016

SummaryTemperature is an environmental factor that influences the development of fish, and when changed abruptly can lead to high mortality. Some species of fish are influenced by this factor, exhibiting a longer time for embryonic development and time to first feeding. This study aims to evaluate the effect of water temperature on embryonic and larval development up to first feeding, to describe the time in hours post fertilization (hpf) of the emergence of different structures and to determine the best hatching rate and survival of animals under different treatments. Five different egg incubation temperatures were used (24, 26, 28, 30 or 32°C, respectively). The eggs were observed at regular intervals of 30 min up to 24 h, every 2 h until 48 h and every 4 h until the display of first feeding in all treatments. Embryonic development was longer for eggs incubated at 24°C and the best results for hatching rate and survival of spawning efficiency were at 28°C. We recommend that incubation of Trichogaster leeri eggs is carried out at 28°C up to the first feeding of larvae.
Female fertility preservation strategies: cryopreservation and ovarian tissuein vitroculture, current state of the art and future perspectives
Authors: Filatov M.A. , Khramova Y.V. , Kiseleva M.V. , Malinova I.V. , Komarova E.V. , Semenova M.L. 
Published: May 2016

SummaryIn the present review, the main strategies of female fertility preservation are covered. Procedures of fertility preservation are necessary for women who suffer from diseases whose treatment requires the use of aggressive therapies, such as chemotherapy and radiotherapy. These kinds of therapy negatively influence the health of gametes and their progenitors. The most commonly used method of female fertility preservation is ovarian tissue cryopreservation, followed by the retransplantation of thawed tissue. Another approach to female fertility preservation that has been actively developed lately is the ovarian tissuein vitroculture. The principal methods, advantages and drawbacks of these two strategies are discussed in this article.
Simultaneous Scanning Electron Microscope Imaging of Topographical and Chemical Contrast Using In-Lens, In-Column, and Everhart–Thornley Detector Systems
Authors: Zhang Xinming , Cen Xi , Ravichandran Rijuta , Hughes Lauren A. , van Benthem Klaus 
Published: May 2016

AbstractThe scanning electron microscope provides a platform for subnanometer resolution characterization of material morphology with excellent topographic and chemical contrast dependent on the used detectors. For imaging applications, the predominantly utilized signals are secondary electrons (SEs) and backscattered electrons (BSEs) that are emitted from the sample surface. Recent advances in detector technology beyond the traditional Everhart–Thornley geometry have enabled the simultaneous acquisition and discrimination of SE and BSE signals. This study demonstrates the imaging capabilities of a recently introduced new detector system that consists of the combination of two in-lens (I-L) detectors and one in-column (I-C) detector. Coupled with biasing the sample stage to reduce electron–specimen interaction volumes, this trinity of detector geometry allows simultaneous acquisition of signals to distinguish chemical contrast from topographical changes of the sample, including the identification of surface contamination. The I-C detector provides 4× improved topography, whereas the I-L detector closest to the sample offers excellent simultaneous chemical contrast imaging while not limiting the minimization of working distance to obtain optimal lateral resolution. Imaging capabilities and contrast mechanisms for all three detectors are discussed quantitatively in direct comparison to each other and the conventional Everhart–Thornley detector.
Increased Risk Of Early-Onset Neonatal Sepsis After Laser Surgery For Twin-to-Twin Transfusion Syndrome
Authors: van Kempen Liselotte E. M. , Zhao Depeng , Steggerda Sylke J. , Bekker Vincent , Middeldorp Johanna M. , Oepkes Dick , Lopriore Enrico 
Published: May 2016

Objective: To investigate the occurrence of early-onset neonatal sepsis (EOS) in twin–twin transfusion syndrome (TTTS) managed with laser surgery.Study design: We performed a prospective cohort study of all consecutive TTTS cases treated with laser surgery (TTTS group) delivered at the Leiden University Medical Center. We recorded the occurrence of EOS, defined as a positive blood culture ≤72 hours postpartum (proven sepsis) or administration of a full course of antibiotics due to risk factors or signs of sepsis, in the absence of a positive blood culture (suspected sepsis). Perinatal variables in the TTTS group were compared with uncomplicated monochorionic twins (no-TTTS group). A multivariate model was generated, examining the association between EOS and gestational age at birth, interval between laser surgery and birth, anterior placenta, laser period (first study period: 2002–2008; second study period: 2009–2015), and preterm premature rupture of membranes (PPROM).Results: The rates of combined suspected and proven EOS in the TTTS group and no-TTTS group were 16% (68/416) and 10% (55/542), respectively (relative ratio [RR] 1.74, 95% confidence interval [CI] 1.19–2.55). Multivariate analysis showed that EOS in the TTTS group was independently associated with lower gestational age at birth (odds ratio [OR] 0.75, 95% CI 0.63–0.88), first study period (OR 2.25, 95% CI 1.08–4.67) and PPROM (OR 2.47, 95% CI 1.28–4.75).Conclusion: The rate of EOS in the TTTS group is low, but increased compared to the no-TTTS group. EOS in TTTS is independently associated with premature delivery, earlier laser period, and PPROM.