bluuebunny/crossref_metadata_2025_split huggingface dataset:
Factors behind the dynamics of land use evolution: case of Lebanon
Authors: Al-Shaar Walid , Bonin Olivier 
Published: May 2021

AbstractsMonitoring and understanding the evolution of land use and land cover is a key factor for many environmental studies as well as for policymakers. Moreover, policymakers are interested in understanding the factors that have a significant impact on land use change. This paper analyses the dynamics of land use change in Lebanon between the years 1984 and 2019 and identifies the main factors behind this process. The use of LandSat satellite images enables the creation of land use maps at several periods and the monitoring of the evolution of built up areas as well as of green areas. Five periods emerge from this analysis, for which it is possible to propose explanatory factors, after an in-depth qualitative analysis. Within the framework of Structural Equation Models, a Confirmatory Factor Analysis is carried out to determine the impacts of several factors related to governance and financial data. Moreover, the urban sprawl is further investigated and explained by cultural, environmental, and infrastructural factors. The main results reveal that the development of built up areas is highly dependent on good funding conditions, whereas banking conditions and weak governance are correlated. The case of Lebanon presents specificities probably linked to historical and cultural considerations that deserve to be studied in future works. In the form of recommendations, new land use policies should be enacted to ensure sustainability in the form of an equilibrium between the urban development, from one side, and the preservation of natural resources and good environmental conditions on the other side. This could comprise the preservation of natural zones; the subsidization of the cultivation profession; and the encouragement of urban densification instead of horizontal sprawl.
Workplace automation without achievement gaps: a reply to Danaher and Nyholm
Authors: Tigard Daniel W. 
Published: May 2021

AbstractIn a recent article in this journal, John Danaher and Sven Nyholm raise well-founded concerns that the advances in AI-based automation will threaten the values of meaningful work. In particular, they present a strong case for thinking that automation will undermine our achievements, thereby rendering our work less meaningful. It is also claimed that the threat to achievements in the workplace will open up ‘achievement gaps’—the flipside of the ‘responsibility gaps’ now commonly discussed in technology ethics. This claim, however, is far less worrisome than the general concerns for widespread automation, namely because it rests on several conceptual ambiguities. With this paper, I argue that although the threat to achievements in the workplace is problematic and calls for policy responses of the sort Danaher and Nyholm outline, when framed in terms of responsibility, there are no ‘achievement gaps’.
Spinoza on Melancholy and Cheerfulness
Authors: Thomas Christopher 
Published: June 2021

AbstractSpinoza's philosophy is often celebrated for its strong anti-normative current. Spinoza argues, for instance, that good and bad do not indicate anything positive in things, and that affects are always particular to the situation in which they arise. And yet Spinoza argues that melancholy is “always evil,” and cheerfulness “always good,” thus problematizing a key metaphysical principle of his system. Turning to select sections in the Ethics and Theological-Political Treatise, this article offers a reading of these two problematic affects before connecting Spinoza to recent work on early modern melancholy that conceptualizes it as an ‘assemblage.’
Long-term results of percutaneous transluminal coronary rotational atherectomy for localised stenosis caused by Kawasaki disease
Authors: Tsuda Etsuko , Asaumi Yasuhide , Noguchi Teruo , Yasuda Satoshi 
Published: June 2021

AbstractThirteen boys and one girl, 5–30 years (median 13 years), underwent percutaneous transluminal coronary rotational atherectomy. The interval from the onset of Kawasaki disease to PTCRA ranged from 5 to 29 years (median 12 years). The follow-up period was 1–22 years (median 13 years). The target vessels were the right coronary artery (7), left anterior descending artery (3), left circumflex (2), and left main trunk (2). The maximum burr size used was 1.75 mm in four, 2.00 mm in four, and 2.15 mm in six. The immediate results of rotational atherectomy were successful in all patients, and the mean stenosis degree improved from 86 ± 15% (mean ± standard deviation) to 37 ± 14% (p < 0.001). Cardiac events in the late period were found in four patients (29%). Acute myocardial infarction occurred in two, and syncope and ventricular fibrillation in one each. The cardiac event-free rate at 10 and 20 years was 79% (95% confidence interval 50–92) and 39% (6–87), respectively, (n = 14). The overall 20-year patency rate was 54% (95% CI 28–78). That in patients more than 10 years old was 77% (95% CI 42–94, n = 10). PTCRA alone is suitable for severe localised stenosis with calcification caused by KD in young adults except for small children. Re-stenosis within the first year after PTCRA often develops because of reactive intimal thickening after the procedure. If a target vessel is a patent 1 year after the procedure, long-term patency may be expected in patients more than 10 years old.
Photoferrotrophy and phototrophic extracellular electron uptake is common in the marine anoxygenic phototroph Rhodovulum sulfidophilum
Authors: Gupta Dinesh , Guzman Michael S , Rengasamy Karthikeyan , Stoica Andreea , Singh Rajesh , Ranaivoarisoa Tahina Onina , Davenport Emily J , Bai Wei , McGinley Beau , Meacham J Mark , Bose Arpita 
Published: May 2021

Abstract
Photoferrotrophy allows anoxygenic phototrophs to use reduced iron as an electron donor for primary productivity. Recent work shows that freshwater photoferrotrophs can use electrons from solid-phase conductive substances via phototrophic extracellular electron uptake (pEEU), and the two processes share the underlying electron uptake mechanism. However, the ability of marine phototrophs to perform photoferrotrophy and pEEU, and the contribution of these processes to primary productivity is largely unknown. To fill this knowledge gap, we isolated 15 new strains of the marine anoxygenic phototroph Rhodovulum sulfidophilum on electron donors such as acetate and thiosulfate. We observed that all of the R. sulfidophilum strains isolated can perform photoferrotrophy. We chose strain AB26 as a representative strain to study further, and find that it can also perform pEEU from poised electrodes. We show that during pEEU, AB26 transfers electrons to the photosynthetic electron transport chain. Furthermore, systems biology-guided mutant analysis shows that R. sulfidophilum AB26 uses a previously unknown diheme cytochrome c protein, which we call EeuP, for pEEU but not photoferrotrophy. Homologs of EeuP occur in a range of widely distributed marine microbes. Overall, these results suggest that photoferrotrophy and pEEU contribute to the biogeochemical cycling of iron and carbon in marine ecosystems.
In vitro expansion of fetal liver hematopoietic stem cells
Authors: Bhardwaj Rashmi , Kumar Lalit , Chhabra Deepika , Mehra N. K. , sharma Atul , Mohanty Sujata , Kochupillai Vinod 
Published: June 2021

AbstractFetal liver hematopoietic stem and progenitor cells (HSPCs) have been considered appropriate for the management of aplastic anemia owing to their proliferative potential. Bone marrow recovery was possible in some cases; the engraftment potential of these cells, however was unsatisfactory, possibly due to the availability of a smaller number of these cells from a single fetus. The present study explores how we can expand fetal liver hematopoietic stem cells under in vitro conditions. We isolated mononuclear cells from fetal liver and hematopoietic stem cells were identified and analyzed by cell surface marker CD34. CD34+ fetal liver HSPCs cells were separated by magnetic cell sorting positive selection method. HSPCs (CD34+) were cultured by using 5 cytokines, stem cell factor (SCF), granulocyte macrophages-colony stimulating factor (GM-CSF), interleukin-6 (IL-6), Fms-related tyrosine kinase 3 (FLT-3) and erythropoietin (EPO), in 4 different combinations along with supplements, in serum-free culture media for 21 days. Cell viability continued to be greater than 90% throughout 21 days of culture. The cells expanded best in a combination of media, supplements and 5 cytokines, namely SCF, FLT-3, IL6, EPO and GM-CSF to yield a large number of total (CD34+ & CD34-) cells. Even though the total number of nucleated cells increased in culture significantly, levels of CD34 antigen expression declined steadily over this period.
Adrenal Hemangioma: A Common Tumor at Uncommon Site
Authors: Asnani Ritu , Hosapatna Laxminarayana Kishan Prasad , Kaliyat Sajitha , Bhagvan Kalale R. , Bhat Praveen Kumar R. , Goel Shreya 
Published: June 2021

AbstractAdrenal hemangiomas are rare vascular tumors. These are benign, mostly nonfunctioning and asymptomatic. Cavernous adrenal hemangiomas are more common in the elderly, with female preponderance. A computed tomography (CT) scan can diagnose their benign nature. Most cases are managed surgically, and laparoscopy is the most common approach followed nowadays.A young female presented with nausea, pain, and a vague mass palpable in the right abdomen. With CT findings favoring benign lesion or nonfunctioning adenoma but symptomatic, the patient had to undergo diagnostic laparoscopy and adrenalectomy. Adrenal hemangiomas are rare lesions. Moreover, involving a young female further makes their diagnosis difficult. Hence, they must be kept as one of the differential diagnosis in evaluation of adrenal mass in young females.
Calonectria pseudonaviculata (Buxus blight).
Authors:   USA, USDA-ARS
Published: May 2021

Abstract

C. pseudonaviculata is an asexual species in a genus of common ascomycete plant pathogens. It was identified relatively recently in the UK, as an introduced species causing a devastating shoot blight of boxwood [Buxus spp.] plants that are commonly used in gardens and landscaping. The full extent of its host range is not known, but Buxus spp. from different continents were found to be susceptible (Henricot et al., 2008). It was placed on the EPPO Alert list in 2004, as it appeared to be spreading to the mainland (EPPO, 2009a), and removed from the list in 2008. This pathogen has been reported from additional European countries in recent years, and may have been transported in asymptomatic infected plants or propagating materials. It survives well in plant debris and probably also in soil.
Dacus ciliatus (lesser pumpkin fly).
Authors: Carvalho Ana Larcher 
Published: May 2021

Abstract

D. ciliatus is a major pest of a wide range of Cucurbitaceae in Africa, Asia and the Middle East. Adult flight and fruit transport are major means of dispersal. It may cause indirect economic impact on exports and could become a serious pest if introduced in the USA. It is an EPPO A1 quarantine pest within the category 'non-European Trypetidae' and is also of quarantine significance to CPPC (Caribbean Plant Protection Commission). Demographics, the main component of competition for fly species, have only been studied for this species by Vayssières et al. (2008). Compared to Bactrocera cucurbitae, it has longer egg incubation and immature stages, both disadvantages when competing for the same habitat. Preference for certain hosts allows D. ciliatus to enhance its biotic potential and maintain low population levels when competing with the melon fly, especially at low altitudes. D. ciliatus could colonize low temperature areas, as has been the case in Mediterranean areas. D. ciliatus seems less wiling to exploit new hosts compared to B. cucurbitae.
Fusarium oxysporum f.sp. vasinfectum (Fusarium wilt).
Authors: Isakeit Thomas 
Published: May 2021

Abstract

F. oxysporum f.sp. vasinfectum causes significant crop losses in several of the main cotton-producing countries. The disease is widespread in the USA, the former Soviet Union (Menlikiev, 1962) and China. In Africa, Tanzania is the worst affected country (Hillocks, 1981). Although losses nationally may not be great, estimated for instance at 0.2% for the whole of the USA in 1989 (Blasingame, 1990), losses are much greater in localized areas and for individual farmers in areas where the disease is endemic. The presence of a pathogen in a field can exclude the planting of a variety with desirable agronomic characteristics (.e.g. yield) if it is susceptible to the pathogen.
Kuehneola uredinis (cane and leaf rust).
Authors: Karsli Ayşegül , Tezcan Himmet 
Published: May 2021

Abstract

Kuehneola uredinis is a fungal pathogen that causes cane and leaf rust only in Rubus cultivars, or wild and ornamental blackberry species. It can be highly destructive, especially on susceptible blackberry and Rubus hybrid cultivars, but rarely occurs on red and black raspberry (Ellis et al., 1991). Although the disease is not systemic, severe infection can cause premature defoliation and a decrease in cane vigour, making plants more susceptible to winter conditions and resulting in economic loss (Converse, 1966). Dispersal of the pathogen occurs on blackberry and hybrid Rubus cultivars, and wild blackberries in production areas worldwide. The fungus overwinters either as aecial urediniospores or mycelium in the canes and wet conditions favour disease dispersal (Laundon and Rainbow, 1969). K. uredinis is not included in quarantine lists (USDA, 2017; EPPO, 2019). There is interest in K. uredinis as a biocontrol agent due to its destructive effect on some invasive wild blackberry species, e.g., Rubus penetrans (Gardner and Hodges, 1983).
Moniliophthora roreri (frosty pod rot).
Authors: Krauss Ulrike 
Published: May 2021

Abstract

The invasive basidiomycete pathogen M. roreri originated in Western Colombia/Ecuador. In recent years it has expanded its range in South America (Peru, Venezuela and Bolivia) and throughout Mesoamerica as far as Mexico. Africa, Asia and insular Caribbean are still free of this pathogen. M. roreri causes the devastating frosty pod rot of cocoa (Theobroma cacao), a disease that commonly reduces yields by over 80% within a few years of pathogen establishment. The severe losses, and occassionally complete crop failure, frequently render cocoa production economically unfeasible. The results are loss of livelihoods and abandonment and conversion of the affected agroforests to less environmentally sustainable uses, with secondary effects ranging from habitat loss for wildlife, fragmentation of forested landscapes and soil erosion. It is therefore imperative that the introduction of the pathogen to additional cocoa-producing regions is prevented. These include the insular Caribbean, the Guyanas and Brazil in the Americas, as well as the bulk-cocoa producing continents, Africa and Asia (Krauss, 2010).
Oidium mangiferae (powdery mildew of mango).
Authors: Brooks Sue 
Published: May 2021

Abstract

Oidium mangiferae is a serious disease of mango and can cause extremely high reductions in yield, mainly as a result of blossom infection (Joubert et al., 1993). Powdery mildew is widespread in India, where it causes significant crop losses; Prakash and Srivastava (1987) reported losses of 30-90% in Lucknow. In China the disease reduces yields by 20-30% (Li GuiZhen et al., 2003). Losses of 80-90% have been reported in South Africa (Brodrick, 1971; Kotze, 1985), while losses of up to 20% have been recorded in Florida in some seasons (Cook, 1975).
Potato spindle tuber viroid (spindle tuber of potato).
Authors: Verhoeven J. Th. J. 
Published: May 2021

Abstract

Several reports attribute losses in potato yield to infection by PSTVd. Le Clerg et al. (1944) determined the effect of different amounts of PSTVd on yield of marketable tubers. In 31 trials with five varieties in several states of the USA, a 4% level of infection resulted in a loss of marketable tubers of 2.6%, which includes effects on the yield and market quality of the crop. Up to 24% reductions in tuber yield have been reported in cultivar Saco infected with mild strains of PSTVd (Singh et al., 1971). However, the severe strain reduced the yield by up to 64%. Estimates of up to 4.6% incidence in cultivar Russet Burbank were observed. On the basis of a number of factors, Singh et al. (1971) estimated an overall loss of 1% of the potato crop. Studies by Pfannenstiel and Slack (1980) showed that reduction of tuber weight depended on the potato cultivar and the length of time they were infected with PSTVd. There was a significant decrease in tuber weight per plant from the first to the third year that the tubers were infected.
Thanatephorus cucumeris (many names, depending on host).
Authors: Back Matthew 
Published: May 2021

Abstract

Introduction: T. cucumeris is a pathogen with a worldwide distribution and in Japan alone T. cucumeris is reported to infect 35 orders, 52 families, 125 genera and 142 species of plant (Ogoshi, 1996). Yield and economic losses caused by T. cucumeris have not been determined in the majority of crops and environments. The most comprehensive estimates of losses are available for Rhizoctonia bare patch of wheat in Australia, sheath blight of rice in Asia and cotton seedling disease in the USA. The remainder of the reports cited are for only a few crops in selected regions and in selected years.
Xylella fastidiosa (Pierce's disease of grapevines).
Authors: Robinson Rebekah 
Published: May 2021

Abstract

Xylella fastidiosa has a wide plant host range and spectrum of insect species capable of serving as vectors which should increase the bacterium's invasiveness and make it difficult to prevent introduction via live plants from the tropical or subtropical Americas. The spread of phony disease of peach within the south-eastern USA from the 1890s until about 1930 and of citrus variegated chlorosis disease of orange throughout Brazil in the 1990s indicates that new strains of X. fastidiosa have the potential to spread over a few years to cause increasing damage. Intersubspecific homologous recombination of strains is implicated in the potential for invasion of new host plants (Nunney et al., 2014). X. fastidiosa represents a very serious threat for the EPPO region. In 2013 the bacterium was reported causing serious damage to olive trees in Puglia, Italy. It was also detected in numerous other host plants (mainly ornamentals). Colonisation of a host with X. fastidiosa does not always equate to disease development and an endophytic life stage has been suggested (Chatterjee et al., 2008). These non-symptomatic hosts and hosts which are slow to develop symptoms can limit the effectiveness of quarantine procedures and may provide a reservoir for maintenance of the pathogen in the wider environment. According to the EFSA Panel on Plant Health (European Food Safety Authority, 2015), establishment and spread of X. fastidiosa in the EU is very likely. The consequences are considered to be major because yield losses and other damage would be high and require costly control measures. X. fastidiosa is included in the EPPO A1 list of pests recommended for regulation as quarantine pests. Among potential insect vectors, only Homalodisca vitripennis, Xyphon fulgida, Draeculacephala minerva and Graphocephala atropunctata are also listed in the EPPO A1 list. The European Food Safety Authority suggests that all xylem sap feeder insects should be regarded as potential vectors of X. fastidiosa. Elbeaino et al. (2014b) detected X. fastidiosa in the phloem feeder Euscelis lineolatus in Italy, suggesting that potential vectors may include phloem feeding insects. Further studies are needed to confirm transmission in E. lineolatus. Newly introduced isolates of X. fastidiosa are likely to be transmitted by endemic vector species even without the introduction of non-native vectors (Almeida et al., 2005).In summary, X. fastidiosa may have the potential to invade agro-ecosystems in Mediterranean regions wherever suitable vectors (overwintering in the adult stage and thus able to inoculate vines during spring) are endemic or become established. The same may be true for tropical-subtropical Asia and Africa.
The existing forms of Zr in Mg-Zn-Zr magnesium alloys and its grain refinement mechanism
Authors: Xing Fangjing , Guo Feng , Su Juan , Zhao Xueping , Cai Huisheng 
Published: June 2021

Abstract
The formation of the Zr-containing phases during the solidification of Mg-Zn-Zr alloy is simulated, the structure of the Zr-containing compounds and the solid solution amount of Zr in α-Mg solid solution as well as the grain size of the as-cast alloy are measured. Based on this, the existing form of Zr element in Mg-Zn-Zr alloy and its action mechanism of grain refinement are discussed. The results show that either α-Zr or α-Mg solid solution precipitates first from melt of Mg-Zn-Zr alloy at the beginning of solidification due to the different Zr content, then some Zn-Zr phases with different Zn/Zr atomic ratios form in the alloy melt during solidification. The Zr element in Mg-Zn-Zr alloy mainly exists in the form of compounds, its solid solution amount in α-Mg is not large and is inhibited by Zn element. The Zr in Mg-Zn-Zr alloy has the effect to refine grain, the reason is that the α-Zr phase and α-Mg formed by peritectic reaction or α-Mg formed from Zr atomic clusters can be used as the nucleus of subsequent α-Mg crystals. In addition, the Zr-containing compound formed during solidification can prevent the growth of grains, the enrichment of Zr in the crystallization front can also promote nucleation by component undercooling.
Improved quality of resistance spot welded joints for molybdenum sheets in lap configuration by adding titanium interlayer
Authors: Ning Jie , Zhang Lin-Jie , Yang Bai-Yu , Ma Ru-Yuan , Sun Yuan-Jun 
Published: June 2021

Abstract
Resistance spot welding (RSW) exhibits low heat input and high efficiency. However, because Mo exhibits low resistivity and high hot strength, it is difficult to effectively combine the resistance spot welded joints of Mo. The lap joint of 1-mm-thick Mo sheets was welded using RSW. Moreover, the welding parameters (current, welding duration, and electrode force) were optimised. Using Ti foil as the interlayer, the influence of the alloying element on the resistance spot welded joint of the Mo sheets was explored. The results indicate that the success rate of welding can be improved by utilising a high current and short welding duration, and increasing the electrode force causes reduced contact resistance and further failure of the welding. In addition, an excessively high electrode force may result in electrode adhesion. Here, a current of 20 kA, welding duration of 0.4 s, and electrode force of 3726 N were used as the optimised parameters. The joint obtained under the parameters can withstand the highest shear load (about 2.20 kN); the shear load of the joint obtained after adding the Ti interlayer (thickness: 0.03 mm) increases by approximately 54%. After adding the Ti foil, the heat input on the interface increased and Ti melted to form metallurgical bonding with Mo. Under these conditions, the interfacial strength increased significantly. During the tensile–shear test, the heat-affected zone of Mo is fractured, in which the shear fracture is subjected to brittle failure.