scholarly journals Tithonia diversifolia Crop Rotation: An Efficient Cultural Practice for Control of Burrowing (Radopholus similis) and Root-Lesion (Pratylenchus coffea) Nematodes in Banana Orchards in Côte d’Ivoire

2020 ◽  
Vol 8 (3) ◽  
pp. 101-109
Author(s):  
Philippe G. Gnonhouri ◽  
Adolphe Zézé ◽  
Amoncho Adiko ◽  
Kouman Kobenan
Keyword(s):  
Cultural Practice ◽  
Tithonia Diversifolia ◽  
Radopholus Similis ◽  
Regression Curve ◽  
Close Relationship ◽  
Production Cycles ◽  
Fallow System ◽  
Significant Production ◽  
Nematode Development

The efficiency of Tithonia diversifolia on managing burrowing (Radopholus similis) and root-lesion (Pratylenchus coffeae) nematodes was examined under greenhouse and banana plantation conditions. During the greenhouse experiment, which lasted 16 weeks, 300 nematodes (150 R. similis + 150 P. coffeae) were inoculated in pots containing two-month-old burst young plants. Eighty pots were monitored and then removed at the rate of 5 pots per week so as to assess nematode development in T. diversifolia roots. The presence rates observed in situ with respect to the initial nematode inoculum were 25%, 20%, and less than 5% individuals, respectively, at 2; 6 and 7 weeks after inoculation. From 10 weeks until the end of the experiment, no presence (0 individual) could be observed in situ. In banana plantations; 1820 T. diversifolia / ha were transplanted at a rate of one cutting/banana corm. This fallow system, carried out in banana intercropping for six months, led to a thick canopy developed by T. diversifolia above ground with a significant production of root biomass in the soil despite the vicinity to infested banana corms. Monitoring of nematode infestations has highlighted a close relationship between the duration (X) of the fallow and the reduction in parasite pressure (Y). The regression curve Y = 102.9X-3.37 fits this relationship with R2 = 0.82. Nematode-free vitro plants implanted in the soil, 90% improved by fallow, made it possible to carry out two production cycles of bananas without nematicide application. The opportunity to involve T. diversifolia in the agrosystem for the production of “organic banana” as an alternative to the use of nematicide was discussed.

scholarly journals Hard Tissue Preservation in Minimally Invasive Mandibular Third Molar Surgery Using In Situ Hardening TCP Bone Filler

2018 ◽  
Vol 2018 ◽  
pp. 1-9
Author(s):  
Wilfried Engelke ◽  
Marcio Lazzarini ◽  
Víctor Beltrán
Keyword(s):  
Inferior Alveolar Nerve ◽  
Third Molar ◽  
Case Series ◽  
Third Molar Surgery ◽  
Hard Tissue ◽  
Socket Preservation ◽  
Bone Filler ◽  
Close Relationship ◽  
Bone Height

Background. Maintenance of hard tissue in the case of impacted third molars (M3M) with close relationship to the mandibular canal is still a surgical challenge which may be overcome using the inward fragmentation technique. Methods. A consecutive case series of 12 patients required the extraction of 13 impacted M3M with a close relationship to the inferior alveolar nerve (IAN). Via occlusal miniflaps, M3M were exposed occlusal under endoscopic vision and removed by inward fragmentation. All patients received socket preservation with resorbable in situ hardening TCP particles to reduce the risk of pocket formation at the second molar. Results. All 13 sites healed uneventfully. Bone height was assessed using CBCT cross-sectional reformats pre- and 3 months postoperatively. The bone height was reduced by 1.54 mm lingual (SD 0.88), 2.91 mm central (SD 0.93), and 2.08 mm buccal (SD 1.09). Differences were significant at a 0.05% level. No tissue invagination at the extraction sites was observed. Conclusions. Major bone defects can be avoided safely using inward fragmentation surgery. The self-hardening bone filler appears to enhance the mineralization of the intrabony defect.

Acid Stimulation Used in In-Situ Leaching Uranium

2010 ◽  
Author(s):  
Wen-sheng Liao ◽  
Li-min Wang ◽  
Yi-xuan Yao ◽  
Guo-ping Jiang ◽  
Hai-jun Zhao ◽  
...  
Keyword(s):  
Formic Acid ◽  
Injection Rate ◽  
Low Permeability ◽  
Reaction Products ◽  
Treatment Results ◽  
The Core ◽  
Fluid Systems ◽  
Core Permeability ◽  
Significant Production

Acidization was studied on a uranium sandstone deposit in Inner Mongolia with low–permeability and heavy calcium cementation. Acid dissolving test indicates that hydrochloric acid, formic acid and mud acid can easily dissolve formation minerals. With proper volumes and concentrations of acids used, the risk of precipitation of reaction products could be minimized. Core flow acidizing trial shows that the acidic fluid systems of hydrochloride acid, formic acid or acetic acid can significantly improve the core permeability. The average permeability has increased by 763 percent for the above three systems. But mud acid didn’t increase the core permeability; on the contrary, it caused formation damage, and led to lowering permeability. In the pilot test, the injection rate has improved by 118 percent for 6 wells. The acid treatment results indicate that a significant production enhancement of wellfields can be achieved by acid stimulation.

LUXURY CONSUMPTION, CULTURAL POLITICS, AND THE CAREER OF THE EARL OF ARLINGTON, 1660–1685

2009 ◽  
Vol 52 (2) ◽  
pp. 295-317 ◽  
Author(s):  
HELEN JACOBSEN
Keyword(s):  
Political Identity ◽  
Cultural Practice ◽  
Foreign Affairs ◽  
Material Consumption ◽  
Secretary Of State ◽  
The Arts ◽  
Close Relationship ◽  
Charles Ii ◽  
Artistic Patronage ◽  
Cultural World

ABSTRACTHenry Bennet, earl of Arlington, is a neglected statesman. A sometime diplomat, he was Charles II's longest-serving secretary of state, held the highest household office for ten years, and married his daughter to a royal bastard. It is, however, his artistic patronage that has most conspicuously been overlooked and, consequently, its political significance underestimated. Informed by his experiences abroad, he appreciated the power of the arts to influence and impress and used the cultural mediation of the English diplomatic network in his control to help skilfully fashion his domestic political identity. Through judicious display of architecture, paintings, sculpture, and furniture, Arlington created a cultural world that confirmed both his close relationship with Charles II and his dominance of foreign affairs. Even after he resigned as secretary of state in 1674, Arlington continued to deploy artistic patronage for political ends: as lord chamberlain, he controlled the largest government department and was formally responsible for fashioning the royal image. This article reconsiders Arlington's contributions as a statesman through his considered use of material consumption and artistic patronage and thereby illuminates corners of cultural practice which are situated firmly in the political sphere.

scholarly journals VAULTED STRUCTURES IN THE ARCHAEOLOGICAL PARK OF POMPEII: 3D SURVEY AND MONITORING

2020 ◽  
Vol XLIV-M-1-2020 ◽  
pp. 303-309
Author(s):  
D. Verde
Keyword(s):  
Laser Scanning ◽  
Preventive Conservation ◽  
Doctoral Research ◽  
Close Relationship ◽  
Masonry Vaults ◽  
Seismic Stress ◽  
The Relationship ◽  
Innovative Techniques ◽  
Intrinsic Condition

Abstract. The contribution focuses on the relationship between preventive conservation and digital technologies, with particular attention to the Archaeological Park of Pompeii and its masonry vaults. These fragile macro-elements, both for their intrinsic condition of ruins and for their historical vulnerability to seismic stress, were detected through a careful 3D survey, in the context of the Great Pompeii Project (GPP). The analysis was carried out in 2015 with laser-scanning technology and photogrammetry, and was aimed at the knowledge, documentation and measurement of conditions of degradation or instability. On the basis of a deep knowledge, supported by in situ investigations, it was possible to define the most appropriate conservative interventions for vaulted structures. Also, the interpretation of the vulnerabilities and of the causes of degradations phenomena allowed focusing on the program phase, in order to maintain the benefits of restoration over time. Moreover, the contribution anticipates how these surveys will be integrated by a doctoral research with industrial characterization. This research is currently being conducted in close relationship with Tecno In – a leading company in the field of knowledge and diagnostics of cultural heritage – and its object is the experimentation of innovative techniques for diagnostics, preventive conservation and restoration of the vaulted structures of Pompeii. Therefore, in the comparison with the surveys realized in 2015 lies the opportunity of deepening the understanding and of monitoring the evolution of degradation conditions of the vaulted buildings under exam.

Genome analysis of Thinopyrum intermedium and Thinopyrum ponticum using genomic in situ hybridization

Genome ◽  
1998 ◽  
Vol 41 (4) ◽  
pp. 580-586 ◽  
Author(s):  
Qin Chen ◽  
R L Conner ◽  
A Laroche ◽  
J B Thomas
Keyword(s):  
In Situ Hybridization ◽  
Genomic Analysis ◽  
Dna Probes ◽  
Genomic In Situ Hybridization ◽  
Thinopyrum Intermedium ◽  
Thinopyrum Ponticum ◽  
Close Relationship ◽  
Cytogenetic Analyses ◽  
Thinopyrum Bessarabicum

Genomic in situ hybridization (GISH) using genomic DNA probes from Thinopyrum elongatum (Host) D.R. Dewey (genome E, 2n = 14), Thinopyrum bessarabicum (Savul. & Rayss) Á. Löve (genome J, 2n = 14), and Pseudoroegneria strigosa (M. Bieb.) Á. Löve (genome S, 2n = 14), was used to examine the genomic constitution of Thinopyrum intermedium (Host) Barkworth & D.R. Dewey (2n = 6x = 42) and Thinopyrum ponticum (Podp.) Barkworth & D.R. Dewey (2n = 10x = 70). Evidence from GISH indicated that hexaploid Th. intermedium contained the J, Js, and S genomes, in which the J genome was related to the E genome of Th. elongatum and the J genome of Th. bessarabicum. The S genome was homologous to the S genome of Ps. strigosa, while the Js genome referred to modified J- or E-type chromosomes distinguished by the presence of S genome specific sequences close to the centromere. Decaploid Th. ponticum had only the two basic genomes J and Js. The Js genome present in Th. intermedium and Th. ponticum was homologous with E or J genomes, but was quite distinct at centromeric regions, which can strongly hybridize with the S genome DNA probe. Based on GISH results, the genomic formula of Th. intermedium was redesignated JJsS and that of Th. ponticum was redesignated JJJJsJs. The finding of a close relationship among S, J, and Js genomes provides valuable markers for molecular cytogenetic analyses using S genome DNA probes to monitor the transfer of useful traits from Th. intermedium and Th. ponticum to wheat.Key words: genomic in situ hybridization, GISH, Thinopyrum intermedium, Thinopyrum ponticum, genomic analysis, Js genome.

Excretion of Urea by the Foetal Guinea Pig

1978 ◽  
Vol 55 (4) ◽  
pp. 329-333
Author(s):  
Jane Horn
Keyword(s):  
Guinea Pig ◽  
Concentration Gradient ◽  
Placental Transfer ◽  
Maternal Plasma ◽  
Plasma Urea ◽  
Foetal Circulation ◽  
Close Relationship ◽  
Active Transfer ◽  
The Difference

1. The placental transfer of urea was studied by perfusing the guinea-pig foetal placenta in situ with dextran solutions containing various amounts of urea, and radioactively labelled urea. 2. Transfer of urea was linearly related to the difference in concentration between the maternal and the foetal sides of the placenta, but transfer in both directions across the placenta was equal when the concentration of urea in the perfusing fluid was 2.5–3.5 mmol/l less than the maternal arterial value. This suggested that urea may be transferred against a concentration gradient. 3. Foetal plasma urea concentrations were found to be 0.5 mmol/l less than the maternal, suggesting that active transfer from the foetal circulation to the maternal can occur. However, because of the close relationship between foetal and maternal plasma urea (r = 0.96), it is concluded that the major control of foetal urea concentrations is by diffusion of urea between maternal and foetal extracellular fluids.

Physical organization of the major duplication on Brassica oleracea chromosome O6 revealed through fluorescence in situ hybridization with Arabidopsis and Brassica BAC probes

Genome ◽  
2005 ◽  
Vol 48 (6) ◽  
pp. 1093-1103 ◽  
Author(s):  
E C Howell ◽  
S J Armstrong ◽  
G C Barker ◽  
G H Jones ◽  
G J King ◽  
...  
Keyword(s):  
In Situ Hybridization ◽  
Fluorescence In Situ Hybridization ◽  
Brassica Oleracea ◽  
Artificial Chromosome ◽  
Genetic Distances ◽  
Chromosome 1 ◽  
Cytogenetic Map ◽  
Inverted Duplication ◽  
Close Relationship

The close relationship between Brassica oleracea and Arabidopsis thaliana has been used to explore the genetic and physical collinearity of the two species, focusing on an inverted segmental chromosome duplication within linkage group O6 of B. oleracea. Genetic evidence suggests that these segments share a common origin with a region of Arabidopsis chromosome 1. Brassica oleracea and Arabidopsis bacterial artificial chromosome probes have been used for fluorescence in situ hybridization analysis of B. oleracea pachytene chromosomes to further characterize the inverted duplication. This has been highly effective in increasing the local resolution of the cytogenetic map. We have shown that the physical order of corresponding genetic markers is highly conserved between the duplicated regions in B. oleracea and the physical lengths of the regions at pachytene are similar, while the genetic distances are considerably different. The physical marker order is also well conserved between Arabidopsis and B. oleracea, with only one short inversion identified. Furthermore, the relative physical distances between the markers in one segment of B. oleracea and Arabidopsis have stayed approximately the same. The efficacy of using fluorescence in situ hybridization, together with other forms of physical and genetic mapping, for elucidating such issues relating to synteny is discussed.Key words: collinearity, cytogenetic map, pachytene chromosomes, Brassica, Arabidopsis.

scholarly journals Proposal for a Methodology Based on XRD and SEM-EDS to Monitor Effects of Lime-Treatment on Clayey Soils

2020 ◽  
Vol 10 (7) ◽  
pp. 2569 ◽  
Author(s):  
Laura Moretti ◽  
Stefano Natali ◽  
Alice Tiberi ◽  
Antonio D’Andrea
Keyword(s):  
Natural Soil ◽  
Clayey Soils ◽  
Natural Clay ◽  
X Ray Diffraction ◽  
Regression Curve ◽  
Lime Treatment ◽  
Sem Images ◽  
X Ray ◽  
Linear Regression Curve

The aim of this paper is to present the results of X-ray diffraction (XRD) tests and scanning electron microscopy-energy dispersive X-ray spectroscopy (SEM-EDS) analyses on a natural and lime-treated clay, in order to determine the percentage of lime able to stabilize soil. For this reason, XRD test analyses have been conducted on natural soil (TQ0) and on two different mixtures (TQ3 and TQ5): The former with 3% and the latter with 5% by mass of quicklime. These mixtures have been analyzed at different curing times: At the addition of lime (0 d), and after a mellowing period of 7 and 28 d. The obtained results show that 3% of CaO is the percentage of quicklime able to modify the material (initial consumption of lime (ICL)) and 5% of CaO is the percentage able to stabilize it (lime stabilization optimum (LSO)). Finally, SEM images allowed for the monitoring of the process of reactions between the soil and lime during the mellowing period, while EDS analyses validated the XRD results in terms of chemical composition of the examined soil. For the examined natural clay, statistical analysis of the obtained EDS results identified a linear regression curve between the added quicklime and the after-treatment Ca content. The proposed approach could be adopted to calculate the content of calcium after the treatment and verify the in situ-added CaO during roadworks or at the end of them.

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