scholarly journals Earthworm-biochar interactions: A laboratory trial using Pontoscolex corethrurus

Author(s):  
Talita Ferreira ◽  
Fabricio Augusto Hansel ◽  
Claudia M.B.F. Maia ◽  
Marcela Guiotoku ◽  
Luís Cunha ◽  
...  
2006 ◽  
Vol 38 (7) ◽  
pp. 2008-2009 ◽  
Author(s):  
Jean-François Ponge ◽  
Stéphanie Topoliantz ◽  
Sylvain Ballof ◽  
Jean-Pierre Rossi ◽  
Patrick Lavelle ◽  
...  

2019 ◽  
Vol 26 (6) ◽  
pp. 705-711
Author(s):  
Daisuke Taniguchi ◽  
Keitaro Matsumoto ◽  
Yoshihiro Kondo ◽  
Tomoshi Tsuchiya ◽  
Ikuo Yamamoto ◽  
...  

Objectives. Thoracic drainage is a common procedure to drain fluid, blood, or air from the pleural cavity. Some attempts to develop approaches to new thoracic drainage systems have been made; however, a simple tube is often currently used. The existing drain presupposes that it is placed correctly and that the tip does not require moving after insertion into the thoracic cavity. However, in some cases, the drain is not correctly placed and reinsertion of an additional drain is required, resulting in significant invasiveness to the patient. Therefore, a more effective drainage system is needed. This study aimed to develop and assess a new thoracic drain via a collaboration between medical and engineering personnel. Methods. We developed the concept of a controllable drain system using magnetic actuation. A dry laboratory trial and accompanying questionnaire assessment were performed by a group of thoracic and general surgeons. Objective mechanical measurements were obtained. Porcine experiments were also carried out. Results. In a dry laboratory trial, use of the controllable drain required significantly less time than that required by replacing the drain. The average satisfaction score of the new drainage system was 4.07 out of 5, indicating that most of the research participants were satisfied with the quality of the drain with a magnetic actuation. During the porcine experiment, the transfer of the tip of the drain was possible inside the thoracic cavity and abdominal cavity. Conclusion. This controllable thoracic drain could reduce the invasiveness for patients requiring thoracic or abdominal cavity drainage.


Author(s):  
Charlotte Bryant ◽  
Israel Carmi ◽  
Gordon Cook ◽  
Steinar Gulliksen ◽  
Doug Harkness ◽  
...  
Keyword(s):  

2013 ◽  
Vol 70 ◽  
pp. 62-69 ◽  
Author(s):  
B. Hernández-Castellanos ◽  
A. Ortíz-Ceballos ◽  
S. Martínez-Hernández ◽  
J.C. Noa-Carrazana ◽  
M. Luna-Guido ◽  
...  

2015 ◽  
Vol 8 (1) ◽  
pp. 79-83
Author(s):  
MJ Uddin ◽  
MMH Khan

Experiments on hogplum beetle, Podontia 14-punctata were carried out to find out the suitable insecticide(s) with appropriate dose(s) for suppressing both larvae and adults. Results revealed that the highest mortality (100%) was found in 1st instar larvae after 24 hours at each dose of superior 505EC and the lowest mortality was in T4 treated leaves. The highest mortality was also found in 2nd, 3rd, 4th and adult stages of hog-plum beetle by T5 and T6 treatments. No mortality was observed in control treatment in laboratory trial. The mean number of larvae ranged from 1.5 to 7.6 per square meter of quadrate at one week after last spray. No significant difference was observed among treatments regarding percent leaf infestation at one day before 1st spray. The percent leaf infestation ranged from 5.01 to 9.82 at one week after last spray. The lowest percent (5.87%) leaf infestation was found in T6 treated plants while the highest percent (15.76%) leaf infestation was found in untreated control plants. The highest mortality was observed in T5 and T6 treated plants at all larval instars and no significant difference was found between two doses of each insecticide under field condition. The results of field trial also revealed that the minimum dose (0.75 ml L-1 of water) of Superior 505 EC is sufficient to suppress the field population of larvae and adults of Podontia 14-punctata effectively. Finally, it may be concluded that the highest mortality was found in all larval instars and adult stage of hog-plum beetle after 24 hours at each dose of superior 505 EC (T5 and T6 treatments) both in laboratory and field trials.J. Environ. Sci. & Natural Resources, 8(1): 79-83 2015


2019 ◽  
Vol 135 ◽  
pp. 9-15 ◽  
Author(s):  
Candido Barreto de Novais ◽  
João Ricardo de Oliveira ◽  
José Oswaldo Siqueira ◽  
Sergio Miana de Faria ◽  
Eliane Maria Ribeiro da Silva ◽  
...  

1981 ◽  
Vol 29 (4) ◽  
pp. 535 ◽  
Author(s):  
KE Lee

Twenty-one species of earthworms, one including two subspecies, are recorded from Vanua Tu (New Hebrides). They comprise 18 species of the 'Pheretima' group of genera, including Amynthas (five spp.), Metapheretima (eight spp.), Polypheretima (one sp.), Pheretima (two spp.) and Pithemera (two spp., one with two subspecies), and three common pantropical species, Dichogaster bolaui, Ocnerodrilus occidentalis and Pontoscolex corethrurus. Seven new species are described. The systematics of the earthworms of Vanua Tu are reviewed, and species in the 'Pheretima' group are classified according to the revisions of Sims and Easton (1972) and Easton (1979). A key is provided for identification of all species. Vanua Tu earthworms show little evidence of niche separation or local speciation and it is concluded that most, if not all, the species have been introduced to the archipelago by pre-European and European man. Relationships between Vanua Tu earthworms and those of other Pacific islands are discussed, and it is shown that a large proportion of the species belong to a widely distributed 'Pacific basin' group. The affinities of this group are with south-east Asian and Indo-Malayan forms, and they are considered to be a group analogous to the small group of European lumbricid species that have been spread by man through much of the temperate regions of the earth.


Nematology ◽  
2003 ◽  
Vol 5 (4) ◽  
pp. 539-547 ◽  
Author(s):  
Dammini Premachandra ◽  
Christian Borgemeister ◽  
Oliver Berndt ◽  
Ralf-Udo Ehlers ◽  
Hans-Michael Poehling

Abstract The efficacy of entomopathogenic nematodes (EPN) was evaluated in a laboratory trial against soil-dwelling stages, late second instar larvae and pupal stages of western flower thrips (WFT), Frankliniella occidentalis Pergande. Among the six EPN strains assessed for the first time, Steinernema feltiae (Nemaplus®) and Heterorhabditis bacteriophora (HD01) caused 65 and 59% mortality, respectively. Steinernema carpocapsae (Agriotos) and S. arenarium (Anomali) caused moderate mortality (40-45%) while Steinernema spp. (Morocco) and H. bacteriophora (Nematop®) had little effect. In a dose response study with concentrations of 100, 400 and 800 infective juveniles (IJ) per cm2 soil of H. bacteriophora (HK3), S. feltiae (Nemaplus®) and H. bacteriophora (HD01), mortality increased only up to 400 IJ cm-2. The rate of infectivity of H. bacteriophora (HK3) and S. feltiae (Nemaplus®) indicated that both strains could survive at least 6 days in the soil and infect WFT immature stages.


Author(s):  
Rajshree Srivastava ◽  
Shiv Kumar Verma ◽  
Vikas Thukral

This chapter describes how an effective work towards software project risk plays a vital role in determining the accomplishment of any project. In this chapter, the aim is to associate fuzzy criteria decision-making based on the approaches for the development of an assessment framework. This framework will be helpful in terms of identification and ranking the software risk according to its characteristics which will be helpful in decision-making of a software lifecycle. For the assessment for the risk of a project, there is an integration of fuzzy decision-making trial, evaluation laboratory trial and fuzzy multi-criteria decision. This new method proposed will be effective in terms of ranking and as well as to measure the software risk factors.


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