Miracle-dz/UniFAR-FTUs huggingface dataset:
Behavior of Fe and P during reduction magnetic roasting-separation of phosphorus-rich oolitic hematite

ABSTRACT Fe–P separation and the behaviors of Fe and P in separation process of high-phosphorus oolitic hematite ore from western Hubei province in China were studied. Various parameters, including reducing temperature and time, dosage of the pulverized coal, grinding fineness of magnetic separation feed, magnetic field intensity and grinding fineness of flotation feed were investigated. Experimental results show that the iron concentrate with total iron grade of 61.78% and phosphorus content of 0.23% was obtained from an oolitic hematite ore containing 47.71% iron and 0.874% phosphorus by magnetization roasting-magnetic separation-reverse flotation separation process under the proper conditions. In the magnetization roasting process, the Fe and P grade was rising by 1.30% and 11.49%, respectively; the forms of Fe and P are oolite hematite (magnetite) and collophanite which mainly distributed inside oolite structure and a small portion being distributed in other shapes. In the magnetic separation process, the Fe is from 48.33% to 58.52%, and P grade was slipped to 0.70% from 0.97%, however, the forms of Fe and P have no change compared with the roasted ore. In the reverse flotation separation process, Fe is from 58.52% to 61.78%, phosphorus is from 0.70% to 0.23%, the flotation concentrate mainly contained fine iron mineral and phosphorus is finely disseminated inside the iron mineral.
Chemical oxidation integrated into bioleaching of pyrite and chalcopyrite using immobilized biomass

Chemical oxidation of pyrite and chalcopyrite by ferric sulfate (Fe2(SO4)3) solution and biogenic ferric iron obtained by mixed culture of isolated thermotolerant Acidithiobacillus sp. 13Zn and Leptospirilum ferriphilum CC immobilized on natural carrierszeolite and shungite was studied. Oxidation rate of sulfide minerals was estimated by the decrease of Fe3+ (oxidant) and increase of Fe2+ ions in the solution. It was revealed that chemical oxidation of chalcopyrite by biogenic ferric iron occurred 2-3 times more intensively than that by Fe2(SO4)3 solution. Pyrite oxidation rate by biogenic ferric iron was twice higher than that by chemical ferric iron solution. It was shown that the treatment of pyrite and chalcopyrite by biogenic ferric iron allows to increase on average 1.5-2times the bioleaching of iron from pyrite and iron and copper from chalcopyrite by the associations of iron and sulfur oxidizing bacteria.
Anti-Bacterial Activities of Melastoma Malabathricum Stem Bark Fractions against Streptococcus Mutans

The objective of this study is to isolate and identify the bioactive compounds that possess antibacterial activities from Melastoma malabathricum stem bark acetone extract (MMSBAE) against Streptococcus mutans. M. malabathricum is widely used in the Southeast Asia to treat many ailments. A total of 12 fractions was purified by vacuum liquid chromatography (VLC) and further analysed by TLC-bioautography to determine antibacterial activities. TLC-bioautography showed that fraction 9 possesses antibacterial activities against S. mutans. Identification of fraction 9 had been done by GCMS and revealed 21 compounds. Some of the compound were important as agent pharmaceutical such as α-amyrin, β-sitosterol, hexadecenoic acid, stearic acid and hexacosanoic acid. Crystal violet and glass surface assay were used to determine anti-biofilm and anti-adherence activity, respectively. The concentrations of fraction 9 that produce 50% reduction in anti-biofilm and anti-adherence activities were 5 mg/mL and 2.50 mg/mL, respectively. Scanning electron microscopy (SEM) was performed to visualize the effect of the fraction 9 on biofilm structure of S. mutans. SEM analysis showed lysed biofilm were found on treated cells. These results indicated that this fraction possesses a powerful anti-cariogenic potential against S. mutans.
Intercalating Hybrids of Sandwich-like Fe3O4–Graphite: Synthesis and Their Synergistic Enhancement of Microwave Absorption

Rational design on the components and microstructures of microwave-absorbing materials can pave the way for upgrading their performances in electromagnetic pollution prevention. In this study, Fe3O4–graphite intercalation hybrids (Fe3O4-GIH) with unique sandwich-like microstructure are fabricated by a molten salt route and subsequent temperature reduction. It is found that the gaseous FeCl3 molecules at high temperature can diffuse into the graphite interlayer plane to obtain FeCl3-GIH, and the intercalated FeCl3 is then transferred into Fe3O4 nanoparticles under high temperature reduction, which can prop open the graphite interlayer, thus achieving sandwich-like Fe3O4-GIH. Therefore, one-step synthesis can give perfect features, such as transformation of graphite into graphene sheets, introduction of a magnetic component, and construction of multiple interfaces, which are a benefit to the microwave absorption (MA). As a result, the maximum reflection loss of the as-obtained Fe3O4-GIH can be up to −51 dB .
From family commitment to entrepreneurial orientation: exploring the role of cultural mechanisms in mature family firms

Abstract At a stage of life cycle maturity, the unique advantages of family influence are often outweighed by organizational conditions of conflict, risk-aversion, and inertia which makes it difficult to exploit entrepreneurial opportunities. Guided by the proposition that a positive culture enables the entrepreneurial spirit to be preserved over time, this study focuses on examining the cultural dynamics between family and business social systems to advance our understanding of the heterogeneity of mature family firms in terms of entrepreneurial orientation (EO). Specifically, it bridges the link between family commitment and firm-level EO by considering long-term orientation and stewardship climate to operate as organizational culture mechanisms. From a quantitative study of 208 family firms, the findings provide evidence for EO to be supported by the proposed serial mediation process. A family’s strong commitment toward the business thus seems to stimulate EO only when passing through long-term-oriented priorities among the firm’s dominant coalition and an organizational environment characterized by collective stewardship.
Online Disclosure of Sexual Victimization and Social Reactions: What Do We Know?

Abstract Many survivors of sexual violence share their experiences with someone. As social media becomes an increasingly common platform for disclosing and responding to sexual victimization, it is vital to consider how existing research examining in-person disclosure of sexual victimization – and the social reactions of support providers – may or may not generalize to the experience of disclosing sexual victimization in online spaces. Following a public health approach, this review and commentary brings together emerging, mid-career, and established scholars in sexual assault disclosure and social reactions to disclosure with the goal of critically examining “what we know” and “what we don’t know” about sexual assault disclosure and social reactions to disclosure that occur in an online forum (i.e., blog post, Twitter, Facebook, or other social media site). Drawing upon “what we don’t know” about the ways in which sexual assault disclosure occurs in online contexts, we generate suggestions for research, as well as strategies for understanding how best to create safer and more supportive experiences for survivors of sexual victimization who choose to disclose their experiences online.
How do rainfall intensity and raindrop size determine stemflow production? Quantitative evaluation from field rainfall simulation experiments

ABSTRACT The effects of rainfall intensity on stemflow production as described in the literature are quite inconsistent (increase, decrease, or no clear relationship) due to complex interactions between rainfall characteristics, and the effect of raindrop size on stemflow production has rarely been explored. Here we conducted field rainfall simulation experiments on two dominant xerophytic shrubs (Caragana korshinskii and Artemisia ordosica) in northwesten China to quantitatively examine the relationship between rainfall intensity and stemflow production, and to test whether larger raindrops result in a decrease in stemflow production. We found that (1) stemflow production increased with rainfall intensity until reaching a threshold value and then began to decrease, and (2) stemflow showed a significant (P < .01) linear decrease with increasing raindrop size. Our study is useful to reconcile the disputed relationships between rainfall intensity and stemflow production, and provides a basis for a quantitative evaluation to fill the knowledge gap regarding how raindrop size determines stemflow production.
Some faunistical and taxonomic data on oribatid mites (Acari, Oribatida) from the vicinity of Lake Sivash (North Crimea)

ABSTRACT The present study is based on oribatid mite material collected from saline soil in the vicinity of Lake Sivash, North Crimea; a list of identified taxa, including 24 species, belonging to 22 genera and 20 families, is presented. One new species, Galumna (Neogalumna) sivashensis sp. nov. is described differing from all known species of the subgenus by the absence (versus presence) of sublamellar line. An identification key to representatives of Galumna (Neogalumna) is provided. http://www.zoobank.org/urn:lsid:zoobank.org:pub:F27976FD-666A-4BC6-BC81-0E5475A33028
Kudla umndeni kwothamele izibankwa: reflections of an African scholar

Abstract This paper details my efforts as an Indigenous African scholar to indigenize the research process – from conception to publication – across three data collection sites in South Africa. To respect the vulnerability and culture of the participants, Zulu and Xhosa cultural values like hlonipha (respect) and ubuntu (humanness) were incorporated into the research process. This paper also details my reflections on positionality, especially the sense of in-betweenness that came with a fluid sense of belonging and identity while researching my own culture. While there are certain advantages that a cultural insider possesses in terms of access to closed-off and historically oppressed communities, these privileges also come with the added responsibility of portraying these communities with the dignity and respect they deserve. This paper further discusses the pragmatic realities of decolonized research and offers insights and discussion for other indigenous researchers hoping to conduct research in their home communities.
Nanopore Hybrid Assembly of Biscogniauxia mediterranea Isolated from Quercus cerris Affected by Charcoal Disease in an Endangered Coastal Wood

Biscogniauxia mediterranea is the causal agent of charcoal disease, affecting oak decline under the trigger of various biotic and abiotic factors, including climate change. Here, we report the genome assembly of an Italian B. mediterranea strain obtained using hybrid sequencing technologies combining long and short reads. ABSTRACT Biscogniauxia mediterranea is the causal agent of charcoal disease, affecting oak decline under the trigger of various biotic and abiotic factors, including climate change. Here, we report the genome assembly of an Italian B. mediterranea strain obtained using hybrid sequencing technologies combining long and short reads.
Complete Genome Sequence of Bovine Coronavirus in Blood Diarrhea from Adult Cattle That Died from Winter Dysentery in Japan

We determined the complete genome sequence of bovine coronavirus (BCoV) recovered from bloody diarrhea from adult cattle that died from winter dysentery in 2020 in Japan. Information on the complete genome sequence of BCoV, which causes deadly diarrhea in adult cattle, has great potential for a better understanding of its pathogenicity. ABSTRACT We determined the complete genome sequence of bovine coronavirus (BCoV) recovered from bloody diarrhea from adult cattle that died from winter dysentery in 2020 in Japan. Information on the complete genome sequence of BCoV, which causes deadly diarrhea in adult cattle, has great potential for a better understanding of its pathogenicity.
Draft Genome Sequence of Marinobacter sp. Strain AL4B, a Marine Bacterium Isolated from Quintero Bay, Chile

Quintero Bay, located along the central coast of Chile, has suffered different oil spills during the past 10 years, impacting its marine ecosystems. Here, we report the genome sequence of Marinobacter sp. strain AL4B, a marine bacterium isolated from Quintero Bay, Chile. ABSTRACT Quintero Bay, located along the central coast of Chile, has suffered different oil spills during the past 10 years, impacting its marine ecosystems. Here, we report the genome sequence of Marinobacter sp. strain AL4B, a marine bacterium isolated from Quintero Bay, Chile.
Stable isotope analysis of an aberrant Painted Bunting (Passerina ciris) feather suggests post-molt movements

ABSTRACT We present the first record of plumage color aberration and the occurrence of slow-growing feather tissue in the Painted Bunting (Passerina ciris), a colorful songbird breeding in the southern United States during summer and migrating to Central America in winter. We took advantage of this rare sampling opportunity and performed hydrogen stable isotope analysis on 12 cross-sections of 2 primary feathers to compare isotopic values in normal and aberrant tissue sampled from the same individual. We used feather hydrogen stable isotope variation as an informative environmental marker to track the movements of the bird across its annual cycle. Spatial probability density estimates suggest further movements after this bunting arrived at molting stopover sites in northern coastal Mexico, either migrating toward southern coastal latitudes or toward higher elevations. Although we are unable to definitively assign a cause to the aberrant feather and its slow growth rate, we highlight how combining the observation of an atypical morphological trait with a modern molecular approach offers an opportunity to advance our understanding of avian movement behavior.
Species-group organization of the Pan-American Dissomphalus (Hymenoptera, Bethylidae)

Abstract: Dissomphalus is a cosmopolitan genus with 424 described species. Here, all 287 Pan-American species of Dissomphalus are analyzed in order to be allocated to species groups under an alpha taxonomic approach. Thirty-four species groups composed of species with known males were initially considered. The following six species-groups are newly proposed: chiapanus, confusus, cornutus, fungosus, lamellatus and napo. The following eleven species groups are fused into four: dissomphaloides with amplus, altivolans with apertus, xanthopus with microstictus, kansanus with secretus, basidentatus and stellatus with vallensis, and strabus with tuberculatus. Forty-seven incertae sedis species are grouped and 29 are newly grouped. A total of 35 species groups are now recognized and all of the 11 species known exclusively by females remain unallocated to groups. A pictorial key to the species groups is first proposed.
Flight call response is lower at dusk than during daytime in two parulid species

ABSTRACT Many passerines regularly use flight calls to communicate during migration. However, flight-calling is inconsistent throughout the day, with a markedly lower degree of calling by free-flying individuals during the early evening hours and with peaks in calling typically around dawn. Based on these observations, we hypothesized that individual flight call response would vary by time of day, and the likelihood to respond would be lower at dusk than during the daytime. We tested daytime and dusk flight call responsiveness of captive American Redstarts (Setophaga ruticilla) and Magnolia Warblers (S. magnolia) during spring migration at the Braddock Bay Bird Observatory (near Rochester, New York, USA). We played a conspecific flight call sound stimulus for individual birds placed inside a soundproof recording studio and recorded their acoustic responses. In our experiment, American Redstarts and Magnolia Warblers were significantly less likely to give flight call responses at dusk than the individuals tested during the daytime. The almost absent responsiveness to flight calls at dusk suggests that these species either minimally communicate with one another during take-off or do not use flight calls as a source of communication at this time. These results have important implications for detection and quantitative bioacoustics migration monitoring. They also demonstrate the need for additional studies in temporal flight-calling behavior.
Invasive wild boar's distribution overlap with threatened native ungulate in Patagonia

Wild boar (Sus scrofa) is one of the most damaging invasive species in the world and can have a profound impact on the distribution of native species. Nevertheless, there still are limitations on the species' current fine-scale spatial information, which is needed to develop effective management measures. Here, we used Species Distribution Models (SDMs) and niche overlap analysis to estimate potential conflict areas between the wild boar and the native southern pudu (Pudu puda), which is a bioindicator of the forest conservation status within the Nahuel Huapi National Park (NHNP), Argentina. The two species' environmental niche overlaps by 40%, which results in a wide geographical overlap between wild boar and pudu distributions. The distribution model predicted that the wild boar potential distribution occupies 22% of the national park and overlaps up to 67% with the pudu distribution, which in turn occupies 20% of the park. Based on our models, we classified 12% of the park as extreme management priority areas, because both species are present. High priority areas, where wild boars have the potential to invade but will not overlap with pudu populations, represent 10% of the park. Medium priority areas, where wild boars do not threaten pudu populations, and low priority areas, with no potential presence of either species, are 8% and 68%, respectively. The results of this study show how SDMs developed at local scales can support the management and monitoring of native and invasive species and help guide the allocation of efforts and resources for management actions focused on protected areas.
Lagothrix flavicauda (Primates: Atelidae)

Abstract: Lagothrix flavicauda (Humboldt, 1812), commonly known as the yellow-tailed woolly monkey, is one of the largest New World primates. Its diet is based on fruits and leaves, and occasionally flowers, buds, epiphyte roots, invertebrates, and some vertebrates. It is endemic to the cloud forests of northern Peru, in Amazonas, San Martín, Huánuco, Junín, La Libertad, and Loreto departments at elevations from 1,000 to 2,800 m. It lives in groups of up to 30 individuals. Lagothrix flavicauda is listed as “Critically Endangered” (CR) by both the International Union for Conservation of Nature (IUCN) and under Peruvian legislation, and on Appendix I of the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES).
Diet of invasive wild pigs in a landscape dominated by sugar cane plantations

Understanding the mechanisms by which alien species become invasive can assure successful control programs and mitigate alien species' impacts. The distribution of invasive wild pigs (Sus scrofa) has been sharply expanding throughout all regions of Brazil in the last few years. Here we demonstrate that large monocultural plantations provide the primary resource subsidies to invasive wild pigs in Brazil. We analyzed 106 stomach contents and carbon stable isotopes (δ13C) of 50 hair samples of wild pigs from a population immersed in a landscape dominated by sugar cane agriculture. Stomach contents were dominated by corn (41%), sugarcane (28.5%), vegetal matter (all other vegetation besides crops, 27%), and animal matter (vertebrates and invertebrates, 4%). Bayesian mixing model analysis of δ13C showed that food sources from C4 photosynthetic pathway (represented by corn and sugarcane) accounted for 94% of the long-term diet, while C3 food sources for only 6.2%. Our results indicate that corn and sugar cane are subsidizing the diet of wild pigs and can facilitate the population growth of this invasive species. Given that Brazil is a major agricultural producer and a hotspot of biodiversity, it is extremely concerning that extensive agriculture may accelerate the expansion of this invasive species, resulting in economic losses and cascading effects on natural habitats.
Subjective Social Capital and Loneliness for the Elderly: The Moderator Role of Line and Facebook Use

Social media has become a vital source of communication for older adults, but its impact is still an ongoing debate. This study investigated the moderating effect of Line and Facebook use on social capital and loneliness in older adults, aged 55 or more, using data obtained from the 2018 Taiwan Communication Survey (TCS). Results from binary logistic regression indicated that older adult users of Line have a lower possibility of being lonely than those who do not use Line. Consistent with past studies, this study found that Line could be a form of social media that has a positive effect on the relationship between social capital and loneliness. Conversely, this article argues that Facebook does not have such a moderation effect. Overall, this study advances understanding of the impact of Facebook and Line on social capital and loneliness. The results are informative for future research on the effects of social media on the elderly.
Reactive laser synthesis of nitrogen-doped hybrid graphene-based electrodes for energy storage

A versatile method based on the matrix assisted pulsed laser evaporation (MAPLE) technique was used for the fabrication of graphene-based electrodes for application in supercapacitors. The simultaneous deposition and chemical transformation of graphene oxide (GO) and GO–NiO nanoparticles was attained by including nitrogen-containing chemically reactive compounds (ammonia, urea and melamine) in aqueous MAPLE targets. Morphological analyses reveal the formation of hundreds of nanometres to tens of micrometres thick porous films on both plastic and metallic flexible substrates. Structural and compositional studies, carried out by transmission electron microscopy, and Raman and X-ray photoelectron spectroscopies, disclose significant deoxidation and nitrogen doping of the GO material. The electrodes reveal remarkable electrochemical performance, showing a maximum volumetric capacitance of 350 F cm−3 (9 mF cm−2 areal capacitance) in aqueous electrolyte. Symmetric supercapacitors fabricated with these electrodes reveal excellent long-term stability at high specific intensities. From the obtained results, it can be asserted that the reactive inverse MAPLE method stands out as a promising technology not only for the adaptable fabrication of flexible graphene-based composite electrodes but also for a wide variety of advanced functional materials for diverse applications.