bluuebunny/crossref_metadata_2025_split huggingface dataset:
Environmental degradation amplifies species’ responses to temperature variation in a trophic interaction
Authors: Mugabo Marianne , Gilljam David , Petteway Laura , Yuan Chenggui , Fowler Mike S. , Sait Steven M. 
Published: July 2019

Abstract

Land‐use and climate change are two of the primary drivers of the current biodiversity crisis. However, we lack understanding of how single‐species and multispecies associations are affected by interactions between multiple environmental stressors.

We address this gap by examining how environmental degradation interacts with daily stochastic temperature variation to affect individual life history and population dynamics in a host–parasitoid trophic interaction, using the Indian meal moth, Plodia interpunctella, and its parasitoid wasp Venturia canescens.

We carried out a single‐generation individual life‐history experiment and a multigeneration microcosm experiment during which individuals and microcosms were maintained at a mean temperature of 26°C that was either kept constant or varied stochastically, at four levels of host resource degradation, in the presence or absence of parasitoids.

At the individual level, resource degradation increased juvenile development time and decreased adult body size in both species. Parasitoids were more sensitive to temperature variation than their hosts, with a shorter juvenile stage duration than in constant temperatures and a longer adult life span in moderately degraded environments. Resource degradation also altered the host's response to temperature variation, leading to a longer juvenile development time at high resource degradation. At the population level, moderate resource degradation amplified the effects of temperature variation on host and parasitoid populations compared with no or high resource degradation and parasitoid overall abundance was lower in fluctuating temperatures. Top‐down regulation by the parasitoid and bottom‐up regulation driven by resource degradation contributed to more than 50% of host and parasitoid population responses to temperature variation.

Our results demonstrate that environmental degradation can strongly affect how species in a trophic interaction respond to short‐term temperature fluctuations through direct and indirect trait‐mediated effects. These effects are driven by species differences in sensitivity to environmental conditions and modulate top‐down (parasitism) and bottom‐up (resource) regulation. This study highlights the need to account for differences in the sensitivity of species’ traits to environmental stressors to understand how interacting species will respond to simultaneous anthropogenic changes.
The Institute for Fiscal Studies Report: English Council Funding: What’s Happened and What’s Next?
Authors: Copus Colin , Jones Alistair 
Published: July 2019

AbstractThe article reviews the recent Institute for Fiscal Studies (IfFS) report, English Council Funding: What’s Happened and What’s Next. The article provides an overview of the main themes and findings of the report which examines the consequences of a sustained period of austerity for English local government and the impact of austerity on certain key council services. The article explores what the report has to say about the way councils have responded to reductions in government funding and the strategies they have developed to protect certain frontline services. The article reviews the suggestions made in the IfFS report for changing English local government funding and finds that they reflect a form of centralist thinking which lacks a radical edge when it comes to reform.
Doctors as moral pioneers: Negotiated boundaries of assisted conception in Colombia
Authors: Shaw Malissa Kay 
Published: July 2019

AbstractNew biotechnologies such as assisted conception are socially embedded artefacts that raise context‐specific ethical, moral and social anxieties. In contexts where the regulations of these profitable developments are limited or ambiguous, and competition between private facilities is high, individual doctors become morally and socially responsible for determining the parameters of administering such therapies. Ethnographic research at two private fertility centres in Colombia reveals that doctors do not determine boundaries based on monetary gain but rather personal morals, social norms and professional obligations. Medical professionals hold diverse perceptions of assisted conception, and often struggle to make decisions regarding who should access such therapies, who are ideal gamete donors and the fate of extra embryos. The complexity of these perceptions applied in a context of limited regulation and the competition of private medicine impacts the praxis of assisted conception. As doctors determine the boundaries of their practice they not only create variation between clinical practices, but also make moral decisions regarding who should be parents, how families should be formed and the significance of embryos. Thus, in navigating their everyday practices, doctors also shape the social world.
Geochemistry of Sediments from the Lopare Basin (Bosnia and Herzegovina): Implications for Paleoclimate, Paleosalinity, Paleoredox and Provenance
Authors: ŠAJNOVIĆ Aleksandra , GRBA Nenad , NEUBAUER Franz , KAŠANIN‐GRUBIN Milica , STOJANOVIĆ Ksenija , PETKOVIĆ Nenad , JOVANČIĆEVIĆ Branimir 
Published: July 2019

AbstractA combined inorganic and organic geochemical study was carried out on marls and mudstones collected from the Lower Miocene Lopare Basin, Bosnia and Herzegovina. A total of 46 samples collected from two boreholes, Pot 1 (depth of 193 m) and Pot 3 (depth of 344 m), showed that element abundances like boron (B), lithium (Li), strontium (Sr), uranium (U), chromium (Cr), nickel (Ni), magnesium (Mg), sodium (Na) and calcium (Ca) are much higher than average than in the upper continental crust (UCC). Chemical composition indicates at least two sources: (i) Mesozoic ophiolites occurring in the north of the investigated area, and (ii) dacito‐andesitic pyroclastics (Mesozoic to Cenozoic). Lopare Basin sedimentation was influenced by strong evaporation resulting in a partly hypersaline lake, which formed during a warm climatic period, probably during the Miocene Climatic Optimum. A brief episode of humid climate conditions resulted in the basin filling‐up and deposition of felsic sediments enriched in thorium (Th). Organic geochemistry shows that the majority of studied sediments contains predominantly immature to marginally mature algal organic matter (OM). The biomarker patterns are generally in agreement with the geological history of the Lopare Basin and inorganic and mineralogical data. Conversely, the molecular distribution ofn‐alkanes as reliable climatic and δ‐MTTC as paleosalinity indicators do not support this conclusion.
Volume and Surface Distribution Heterogeneity of Nano‐pore in Coal Samples by CO2 and N2 Adsorption Experiments
Authors: ZHANG Junjian , WEI Chongtao , LUO Jinhui , LU Guanwen , QUAN Fangkai , ZHENG Kai , PENG Yujie 
Published: July 2019

AbstractIn this paper, the heterogeneity of adsorption pores in middle and high rank coal samples were analyzed by using low temperature N2 and CO2 adsorption technology and fractal theory. The following results were achieved. 1) According to the results of volume and surface fractal dimension, meso‐pores can be classified into Mep‐1, Mep‐2, and Mep‐3, respectively. Micro‐pore can be classified into Mip‐1, Mip‐2, and Mip‐3, respectively. 2) Pore types play an important role in affecting the heterogeneity of meso‐pores. The volume heterogeneity (VHY) of Mep‐1 is simpler than that of Mep‐2 and Mep‐3 in type A samples. However, the VHY of Mep‐1 becomes gradually larger than that of Mep‐2 and Mep‐3 from type A to type B and C. The VHY of open pore in the same diameter is higher than that of semi‐open or closed pore. Meanwhile, the surface heterogeneity (SHY) of types A and B samples is significantly larger than that of type C, the SHY of semi‐open or closed pores is more complicated than that of open pores. 3) Coal rank mainly affects the heterogeneity of micro‐pores. The heterogeneity of type A is always smaller than that of type B and C. The VHY of Mip‐1 is more complicated than that of Mip‐2 and Mip‐3 in the same samples, and the sensitivity of the VHY of Mip‐1 and Mip‐2 to the degree of coal rank is smaller than that of Mip‐3. Meanwhile, the SHY of Mip‐1 and Mip‐2 is simpler than that of Mip‐3 in the same sample, the SHY of micro‐pores remains stable as the pore size decreases, and the affect of coalification level on SHY decreases with the decrease in pore diameter. Full‐scale fractal characterization has enabled quantitative characterization of adsorption pore properties and provided useful information with regards to the similarity of pore features in different coal reservoirs.
Ore Controls and Metallogenesis of Au‐Ag Deposits at Atalla Mine, Central Eastern Desert of Egypt
Authors: ABD EL MONSEF Mohamed 
Published: July 2019

AbstractGold‐silver deposits in the Atalla area occur as hydrothermal quartz veins in NE–SW pre‐existing fractures within the Atalla granitic pluton. The orientation of such quartz veins has been attributed to extensional behavior related to the Atalla Shear Zone (ASZ). The Atalla area is covered by a variety of lithologies that are (from oldest to youngest): metasedimentary rocks, metavolcanic rocks, ophiolite assemblage (serpentinites/talc‐carbonates), Atalla granite and Dokhan volcanic rocks. Microscopically, Atalla granite ranges in composition from granodiorite to monzogranite. Whole‐rock geochemistry constrains the calc‐alkaine affinity of the Atalla granite that was intruded within an orogenic (syncollision) tectonic regime. The ore minerals are represented by gold/silver (electrum), pyrite (Py1 & Py2), arsenopyrite, pyrrhotite, sphalerite, chalcopyrite, galena, covellite and goethite. The temperature of ore formation ranges from 240 to 285°C and the estimated fluid pressure is in the range of 20–100 MPa. Based on the geological setting, ore textures and fluid characteristics; the Atalla Au‐Ag deposits are considered to be orogenic in nature, formed from a continental collision (∼653‐590 Ma), synchronous with the emplacement of calc‐alkaline magmatism during the evolutionary history of the Arabian Nubian Shield (ANS). The initial ore‐forming fluid was primarily derived from a metamorphic source related to ophiolitic‐serpentinite rocks under deep regional conditions of greenschist‐amphibolite facies, where the Atalla granitic eruption provided the required temperature conditions for the metamorphic process to take place. Under such conditions, the transportation of ore metals as bisulfide complexes is favoured. The deposition of ore minerals was triggered by fluid‐wallrock interaction through fracture pathways in conjunction with a temperature‐pressure drop that is likely to have been related to uplift into the crustal levels.
Detrital Zircon U‐Pb Geochronology and Provenance of the Hebukesaier Formation in the Shaerbuerti Mountains, Northern West Junggar: Implication for Devonian Subduction of the Junggar–Balkhash Ocean
Authors: LIANG Hao , CHEN Jiafu , MA Xu , YANG Hongzhang , XIN Mingyang 
Published: July 2019

AbstractLimited Devonian magmatic record in northern West Junggar leads to contrasting models on its tectonic evolution. In this study, we conducted LA‐ICP‐MS U‐Pb dating on detrital zircons of two sandstones from the Hebukesaier Formation in the Shaerbuerti Mountains. Detrital zircons with oscillatory zoning are characterized by high Th/U (> 0.3) and low La/Yb (< 0.15), indicating their magmatic origin. The youngest zircon ages of two samples are 402 ± 2 Ma and 406 ± 2 Ma, respectively, suggesting that the Hebukesaier Formation was deposited at the Early Devonian. Detrital zircon age patterns show single peaks (at ca. 424 Ma, n = 157), which indicates that these clastics were likely proximal accumulation after short distance transportation. Provenance of the Hebukesaier Formation was the Xiemisitai and Shaerbuerti Mountains. Detrital zircon ages range from 481 Ma to 395 Ma, which indicates that there was relatively continuous Early Paleozoic magmatism in the Xiemisitai and Shaerbuerti Mountains since the Early Ordovician. Age spectrums of sampled detrital zircons are distinct from those of Lower Devonian strata either in southern West Junggar or in East Junggar, which implies for individual tectonic evolution of northern West Junggar. We favor that Lower Devonian Hebukesaier Formation was developed in a fore–arc setting due to the northward subduction of the Junggar–Balkhash Ocean.
Distribution Patterns of Ag in Hydrothermal Precipitates from the Okinawa Trough
Authors: ZHANG Yaoyao , CHU Fengyou , LI Zhenggang , DONG Yanhui , LONG Jiangping , WANG Hao , ZHU Jihao , LIU Jiqiang 
Published: July 2019

AbstractThe Okinawa Trough is characterized by enrichment of Ag in hydrothermal precipitates; however, the distribution of this enrichment remains poorly constrained. This study presents the results of a field‐emission scanning electron microscopy and electron‐microprobe analysis based mineralogical and geochemical investigation of the spatial distribution of Ag within Ag‐rich sulfide samples from the Okinawa Trough. The tetrahedrite, covellite, and galena in these samples contain high concentrations of Ag (average values of 1.60, 0.78, and 0.23 wt%, respectively) and also various Ag sulfosalts. Examination of the Ag budget of these samples indicates that most of the Ag is hosted by tetrahedrite followed by galena. The Ag within tetrahedrite is incorporated by substitution into the Cu site, whereas galena becomes Ag‐enriched by the coupled incorporation of monovalent Ag, Tl, and Cu, and trivalent Sb and Bi into Pb lattice sites. Tetrahedrite and galena containing higher concentrations of Sb favor increased Ag substitution. Four sets of Ag host minerals are identified with distinct ore formation temperatures. Tetrahedrite and galena concentrate the majority of Ag at medium temperatures (150–300°C). Other Ag host minerals concentrate only minor or trace amounts of Ag, including massive sphalerite, chalcopyrite, and pyrite at high temperatures (>300°C), colloform pyrite and sphalerite at low temperatures (<150°C), and Ag‐sulfosalts at even lower temperatures (<100°C).
Geological Controls on High Production of Tight Sandstone Gas in Linxing Block, Eastern Ordos Basin, China
Authors: QI Yu , JU Yiwen , MENG Shangzhi , YU Kun , LI Wuyang , JIA Tianrang , WU Jianguang , CHEN Wangang , LUO long 
Published: July 2019

AbstractTight sandstone gas in the Linxing Block, eastern Ordos Basin, has been successfully exploited. The high performance is mainly a result of the special geological conditions. The key geological controls for high production have been discussed on the basis of seismic data, field observation, sample features, mercury porosimetry, mechanical properties, and basin modeling. Firstly, the coal measures have good gas generation potential, not only because of the existence of coalbeds and organic‐rich shales, but also because coal laminae and microbial mats in the shales significantly increase their total organic carbon (TOC) contents. Secondly, except for the uplifted zone of the Zijinshan complex and the eastern fault zone, rare large faults develop in the Carboniferous–Permian sequence, ensuing the sealing capacity of cap rock. Small fractures generally concentrated in the sandstones rather than the mudstones. Thirdly, gas accumulation in the Linxing Block was controlled by the tectonic, burial and thermal histories. Gas accumulation in the Linxing Block started in the Late Triassic, followed by three short pauses of thermal maturation caused by relatively small uplifts; the maximum hydrocarbon generation period is the Early Cetaceous as a combined result of regional and magmatic thermal metamorphisms. Field profiles show abundant fractures in sandstone beds but rare fractures in mudstone beds. Mechanical properties, determined by lithostratigraphy, confine the fractures in the sandstones, increasing the permeability of sandstone reservoirs and retaining the sealing capacity of the mudstone cap rocks. The modern ground stress conditions favor the opening of predominant natural fractures in the NNW–SSE and N–S directions. These conclusions are useful for exploring the potential tight sandstone gas field.
Efficacy and safety of avocado‐soybean unsaponifiables for the treatment of hip and knee osteoarthritis: A systematic review and meta‐analysis of randomized placebo‐controlled trials
Authors: Simental‐Mendía Mario , Sánchez‐García Adriana , Acosta‐Olivo Carlos A. , Vilchez‐Cavazos Félix , Osuna‐Garate Jorge , Peña‐Martínez Víctor M. , Simental‐Mendía Luis E. 
Published: July 2019

AbstractObjectiveWe performed a systematic review and meta‐analysis from randomized controlled trials to examine the efficacy and safety of avocado‐soybean unsaponifiables (ASU) in patients with hip or knee osteoarthritis (OA).Data sourcesMedline, SCOPUS, Web of Science, and Google Scholar databases were searched for randomized placebo‐controlled trials.Study selectionOriginal studies were randomized placebo‐controlled trials evaluating the effect of orally administered ASU on knee or hip OA symptoms using the Lequesne index, visual analog scale (VAS) and/or joint space width (JSW).Data extractionMeta‐analysis was conducted using a random‐effects model and generic inverse variance method. Heterogeneity was tested using the I2 statistic index.Data synthesisAvocado‐soybean unsaponifiables therapy had a significant reduction on pain by VAS assessment (weighted mean difference [WMD]: −9.64 mm, 95% CI: −17.43, −1.84; P = .02; I2 = 92%). A subanalysis according to the type of OA showed that ASU significantly decreased both VAS and Lequesne index in knee OA (WMD: −17.36, 95% CI: −25.91, −8.82; P < .0001; I2 = 87% and WMD: −2.33, 95% CI: −2.88, −1.78; P < .00001; I2 = 18%, respectively) but not in hip OA. Finally, ASU supplementation showed no significant differences for adverse events compared to placebo (relative risk: 1.02, 95% CI: 0.83, 1.25; P = .88; I2 = 0%).ConclusionResults of this meta‐analysis suggest a beneficial effect of ASU treatment in symptomatic knee OA but not in hip OA. Additionally, adverse events were similar in patients receiving ASU therapy or placebo.
Can Audit Committee Expertise Increase External Auditors' Litigation Risk? The Moderating Effect of Audit Committee Independence
Authors: Alderman Jillian , Jollineau S. Jane 
Published: July 2019

ABSTRACTThis study examines whether the perceived independence and financial expertise of audit committee members affect external auditors' exposure to legal liability. We use an experiment in which potential jurors make judgments about auditor independence and legal liability for a case involving an audit failure. We find that perceptions of audit committee independence from management are positively associated with judgments of auditor independence and negatively associated with auditor liability. However, financial expertise of audit committee members can be a double‐edged sword. Our experiment finds that judgments of auditor liability are higher when the audit committee is perceived to have higher financial expertise but lower independence from management. In assessing litigation risk of current and prospective clients, auditors may want to carefully consider the independence of audit committee members from management, particularly when audit committee members have financial expertise. In the event of an audit failure, the financial expertise of nonindependent audit committee members can negatively affect jurors' perceptions of auditor independence and liability.
Phenotyping tree resistance to a bark‐chewing insect, the pine weevil Hylobius abietis
Authors: Zas Rafael , Poceiro María S. , Lores María , Rolke Laura M. , Sampedro Luis 
Published: July 2019

AbstractBreeding for resistance to forest pests and pathogens is emerging as a promising tool for minimising the impact of the increasing biotic threats that our forests are experiencing as a consequence of global change. Efficient phenotyping protocols of resistance are urgently needed. Here we present the results of two experiments aimed to determine whether the variation in resistance to the pine weevil Hylobius abietis, a harmful pest of European conifers, can be inferred by nondestructive bioassays using excised plant material collected in forest genetic trials. Weevil damage and amount of nonvolatile resin induced by weevil feeding were assessed in young trees and in branches of adult trees using several phenotyping procedures (bioassays using either living trees, excised plant material and cut stem twigs) on four pine species (Pinus pinaster, P. radiata, P. sylvestris and P. pinea). Half of the plants were previously induced with methyl jasmonate (MJ), a treatment that is known to affect resistance to the pine weevil. In Experiment 1, living and excised plants showed parallel results: MJ treatment significantly reduced weevil damage, and saplings responded to weevil damage locally increasing the nonvolatile resin (NVR) in the stems proportionally to the damage suffered. This response was, however, slightly lower in excised than in living saplings. On the contrary, patterns of weevil feeding on stem twigs completely departed from those observed in living and excised seedlings. Moreover, cut stem twigs were unable to respond to weevil feeding increasing NVR according to the weevil damage. In Experiment 2, assessment of weevil damage on excised branches explained around 50% of variation in damage on living branches. This relationship became much more pronounced (R2 = 0.81) when explored at the mean treatment level; branch manipulation did not alter the patterns of variation in resistance across pine species or MJ treatments. Irrespective of the assessment procedure, MJ consistently decreased weevil damage in all pine species, with larger reduction in weevil damage in stone and maritime pine than in radiata and Scots pine. Radiata pine was the most resistant while Scots pine was the most susceptible to the pine weevil. Overall, results suggest that using excised plant material is an operative alternative for phenotyping weevil resistance whenever care is taken to maintain the functionality of the excised plant material. This will allow taking advantage of multiple available conifer genetic trials to deepen the ecological genetics of resistance to the pine weevil and to screen for resistance without compromising the long‐term utility of those genetic trials.