scholarly journals Effects of Amorphous Silica Nanopowders on the Avoidance Behavior of Five Soil Species—A Screening Study

Nanomaterials ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 402 ◽  
Author(s):  
Joana Santos ◽  
Ângela Barreto ◽  
João Nogueira ◽  
Ana Luísa Daniel-da-Silva ◽  
Tito Trindade ◽  
...  
Keyword(s):  
Avoidance Behavior ◽  
Eisenia Fetida ◽  
Behavioral Responses ◽  
Behavioral Effects ◽  
The Other ◽  
Folsomia Candida ◽  
Biological Models ◽  
Negative Effects ◽  
Spiked Soil ◽  
Screening Study

Silica nanoparticles (SiO2NPs) are one of the most used in commercial products and biomedical tools, however, their environmental effects have not been fully described. Although negative effects of SiO2NPs on the behavior of freshwater invertebrates have been reported, the knowledge is limited, especially the effect of nanopowders in terrestrial organisms. Accordingly, the aim of the present study is to understand the effects of SiO2NPs on the avoidance behavior of five soil species, whose niche may differ thus contributing to differential harmful SiO2NPs effects. Hence, avoidance assays testing SiO2NPs concentrations of 0, 10, 100, 250, 500 and 1000 mg/kg were performed with Enchytraeus crypticus, Folsomia candida, Tenebrio molitor, Porcellionides pruinosus and Eisenia fetida. SiO2NPs induced different behavioral effects, depending on the invertebrate ecology/habitat, exposure route and physiology. T. molitor, P. pruinosus and F. candida did not avoid contaminated soil; however, E. crypticus and E. fetida significantly avoided SiO2NPs spiked soil. Since these terrestrial worms (oligochaetes) live mostly burrowed in the soil, this can provide greater opportunity for SiO2NPs’ uptake. On the other hand, the other tested organisms mainly living on the upper part of the soil did not avoid the SiO2NPs spiked soil. The avoidance data obtained here also highlight the need for further studies to understand whether (or not) the detected behavioral responses are linked to either neurotransmission processes or sensorial aspects of the biological models.

scholarly journals Effects of Biosolids at Varying Rates on Earthworms (Eisenia fetida) and Springtails (Folsomia candida)

2011 ◽  
Vol 2011 ◽  
pp. 1-10 ◽  
Author(s):  
N. Artuso ◽  
T. F. Kennedy ◽  
J. Connery ◽  
J. Grant ◽  
O. Schmidt
Keyword(s):  
Eisenia Fetida ◽  
Soil Invertebrate ◽  
Folsomia Candida ◽  
Soil Organisms ◽  
Negative Effects ◽  
Heavy Metal Concentrations ◽  
Invertebrate Species ◽  
Treated Sewage ◽  
Significant Difference ◽  
Future Work

Land spreading is a major option internationally for the disposal/use of treated sewage sludge (biosolids), but effects of this practice on soil organisms are largely unknown. This study investigated the effects of biosolids on two soil invertebrate species, earthworms (Eisenia fetida) and Collembola (Folsomia candida), in laboratory tests. Five biosolids from different sewage works were assessed at rates equivalent to 0, 2, 5, 10, and 20 t ha−1. Biosolids applied at 2 and 5 t ha−1did not cause mortality of adult earthworms but did at 10 and 20 t ha−1. At 5, 10 and 20 t ha−1, all biosolids had significantly fewer juvenile worms relative to controls. Increasing the rates from 2 to 10 t ha−1did not impact on the number of adult Collembola, but at 20 t ha−1there were significantly fewer adults. There were significantly fewer juvenile Collembola recorded for biosolids applied at the 2 t ha−1when compared with controls, and also when biosolids were applied at 5, 10, and 20 t ha−1relative to 2 t ha−1. Some significant difference between biosolids were observed, but generally, negative effects were not related to heavy metal concentrations in biosolids. It is recommended that possible detrimental mechanisms (e.g., ammonia production, lack of oxygen) be investigated in future work. It is concluded that biosolids, applied at legal, low rates (about 2 t ha−1) are unlikely to be detrimental to earthworms or adult Collembola but can be detrimental to Collembola reproduction.

scholarly journals Ecotoxicological assessment of silicate rock fertilizers using soil invertebrates

2021 ◽  
Vol 56 ◽  
Author(s):  
Cintia Carla Niva ◽  
Julia Cora Segat ◽  
Dilmar Baretta ◽  
Carolina Riviera Duarte Maluche Baretta ◽  
Maria Inês Lopes de Oliveira ◽  
...  
Keyword(s):  
Adverse Effects ◽  
Avoidance Behavior ◽  
Folsomia Candida ◽  
Eisenia Andrei ◽  
Negative Effects ◽  
Ecotoxicological Assessment ◽  
Ecotoxicological Tests ◽  
Biotite Schist ◽  
Survival And Reproduction ◽  
Silicate Rocks

Abstract: The objective of this work was to evaluate the possible adverse effects of rock dusts on the avoidance behavior of earthworms and collembolans, as well as on the survival and reproduction of enchytraeids, in ecotoxicological tests using artificial and natural soils. The tests were performed following international guidelines (ISO 17512-2/2011, ISO 11267/1999, and NBR ISO 16387/2012), with some adaptations, in order to evaluate the effect of dusts from two silicate rocks, biotite schist and phonolite, at the concentrations of 0, 0.1, 1.0, 10, and 100%, in artificial and natural (Arenosol and Ferralsol) soils. The avoidance behavior of the earthworm Eisenia andrei and the collembolan Folsomia candida was evaluated, as well as the survival and reproduction of the enchytraeid Enchytraeus sp. Biotite schist and phonolite affected negatively earthworms when applied to the soil at concentrations equal to or higher than 1.0%. The observed effect was associated to the greater presence of salts, especially in the phonolite, and to changes in soil texture when higher concentrations were used. Negative effects on collembolans and enchytraeids were verified at concentrations of 10% or using pure rock dusts. Agronomic rates smaller than 1.0% (approximately 20 Mg ha-1) rock dusts do not cause avoidance behavior or reduction in the survival and reproduction of invertebrates in the soil.

Development and regional planning within the decentralized administrative frame: case study (the Jordanian Experiment)

2018 ◽  
Vol 1 (2) ◽  
pp. 60-72
Author(s):  
Mansour Safran
Keyword(s):  
Regional Planning ◽  
The Other ◽  
Negative Effects ◽  
Administrative Procedures ◽  
The Way

This aims to review and analyze the Jordanian experiment in the developmental regional planning field within the decentralized managerial methods, which is considered one of the primary basic provisions for applying and success of this kind of planning. The study shoed that Jordan has passed important steps in the way for implanting the decentralized administration, but these steps are still not enough to established the effective and active regional planning. The study reveled that there are many problems facing the decentralized regional planning in Jordan, despite of the clear goals that this planning is trying to achieve. These problems have resulted from the existing relationship between the decentralized administration process’ dimensions from one side, and between its levels which ranged from weak to medium decentralization from the other side, In spite of the official trends aiming at applying more of the decentralized administrative policies, still high portion of these procedures are theoretical, did not yet find a way to reality. Because any progress or success at the level of applying the decentralized administrative policies doubtless means greater effectiveness and influence on the development regional planning in life of the residents in the kingdom’s different regions. So, it is important to go a head in applying more steps and decentralized administrative procedures, gradually and continuously to guarantee the control over any negative effects that might result from Appling this kind of systems.   © 2018 JASET, International Scholars and Researchers Association

scholarly journals Can Dogs’ Origins and Interactions with Humans Affect Their Accomplishments? A Study on the Responses of Shelter and Companion Dogs during Vocal Cue Training

Animals ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 1360
Author(s):  
Maria Luiza A. Fonseca ◽  
Angélica S. Vasconcellos
Keyword(s):  
Social Interactions ◽  
Social Deprivation ◽  
Behavioral Responses ◽  
The Other ◽  
Influential Factor ◽  
Vocal Cues ◽  
Companion Dogs ◽  
Shelter Dogs ◽  
Tone Of Voice ◽  
Neutral Tone

The inclusion of life history as a possible influential factor is pivotal in studies on behavior, welfare, and cognition. Shelter dogs have usually experienced a life involving poor social interactions with humans. Thus, we aimed to investigate the behavioral responses of shelter dogs (SDs) and companion dogs (CDs) during the training of two vocal cues (“sit”, “paw”), as well as the possible associations between their responses and the behaviors of trainers. We studied 15 SDs and 15 CDs in up to eight five-minute training sessions. Dogs’ and trainers’ behaviors were recorded and analyzed (through GLM, GLMM, correlation and Mann–Whitney tests). Shelter dogs responded to more cues per session, with shorter latencies and fewer repetitions of cues. Moreover, SDs spent more time wagging their tails. Dogs’ sex and trainers’ behaviors were also associated with differences in dogs’ responses. The use of a reproachful tone of voice was associated with a greater number of cues responded to, shorter latencies, and fewer repetitions of cues. However, this type voice/discourse was also linked to a greater exhibition of non-training behaviors (e.g., exploring the room or jumping on the trainer), and to dogs spending less time next to the trainer and wagging their tails. On the other hand, the use of a neutral tone of voice and laughter, besides being linked to performance, was also associated with longer durations of tail wagging. Furthermore, the duration of the trainers’ orientation to dogs was correlated with the orientation of the dogs to the trainers. Our data suggest that, even when having experienced social deprivation from humans, SDs’ capacities to learn vocal cues were preserved, possibly due to ontogenic homeostasis processes. Shelter dogs’ greater interest in the sessions may be also credited to their socially-deprived routine. Our outcomes also point to an association between friendly interactions during training and dog performance and excitement, which suggests that such interactions may have the potential to improve SD welfare.

Avoidance behavior of Eisenia fetida and Metaphire posthuma towards two different pesticides, Acephate and Atrazine

Chemosphere ◽  
2021 ◽  
pp. 130476
Author(s):  
Shivika Datta ◽  
Jaswinder Singh ◽  
Joginder Singh ◽  
Simranjeet Singh ◽  
Sharanpreet Singh
Keyword(s):  
Avoidance Behavior ◽  
Eisenia Fetida ◽  
Metaphire Posthuma

scholarly journals Sex differences in the behavioral responses of dogs exposed to human chemosignals of fear and happiness

2021 ◽  
Author(s):  
Biagio D’Aniello ◽  
Barbara Fierro ◽  
Anna Scandurra ◽  
Claudia Pinelli ◽  
Massimo Aria ◽  
...  
Keyword(s):  
Sex Differences ◽  
Behavioral Responses ◽  
The Other ◽  
Behavioral Patterns ◽  
Stress Signals ◽  
Stress Behaviors ◽  
The Stranger

AbstractThis research focuses on sex differences in the behavioral patterns of dogs when they are exposed to human chemosignals (sweat) produced in happy and fear contexts. No age, breed or apparatus-directed behavior differences were found. However, when exposed to fear chemosignals, dogs’ behavior towards their owners, and their stress signals lasted longer when compared to being exposed to happiness as well as control chemosignals. In the happy odor condition, females, in contrast to males, displayed a significantly higher interest to the stranger compared to their owner. In the fear condition, dogs spent more time with their owner compared to the stranger. Behaviors directed towards the door, indicative of exit interest, had a longer duration in the fear condition than the other two conditions. Female dogs revealed a significantly longer door-directed behavior in the fear condition compared to the control condition. Overall the data shows that the effect of exposure to human emotional chemosignals is not sex dependent for behaviors related to the apparatus, the owner or the stress behaviors; however, in the happiness condition, females showed a stronger tendency to interact with the stranger.

scholarly journals The influence of cetane-detergent additives into diesel fuel increased to 10% (V/V) of RME content on energy parameters and exhaust gas composition of a diesel engine

2019 ◽  
Vol 179 (4) ◽  
pp. 204-209
Author(s):  
Winicjusz STANIK ◽  
Jerzy CISEK
Keyword(s):  
Diesel Fuel ◽  
Cetane Number ◽  
The Other ◽  
Exhaust Gas ◽  
Gas Composition ◽  
Slight Effect ◽  
Negative Effects ◽  
Exhaust Gases ◽  
The Third ◽  
Reduction Of Nox

To avoid the negative effects of increasing the amount of RME in the diesel fuel (to 10%), three different additive packages were used: stabilising, cleaning, and increasing the cetane number with different concentrations. The tests were carried out using a 4-cylinder, turbocharged 1.9 TDI engine from VW. The tests were carried out for 4 fuels (comparative fuel with a content of 7% RME and 3 test fuels with a content of 10% RME, differing in the content of the additive package.It was found that each of the 3 additive packages used does not have a significant impact on fuel consumption. However, a different effect of the tested additives on the composition of exhaust gases was observed. The first package had a slight effect on reducing the NOx concentration in the exhaust, but only for small engine loads. On the other hand, the second additive pack worked more effectively only at higher engine loads (in relation to the reduction of NOx concentration in the exhaust gases). In the third packet, the amount of the cetane additive was doubled (compared to the second packet). Then, the reduction in the NOx concentration in the exhaust gas by 3–8% was obtained with reference to the comparative fuel.

scholarly journals CONSUMER MISBEHAVIOR IN TOURISM MARKET

2016 ◽  
Vol 4 ◽  
pp. 121-125
Author(s):  
Marta Grybś-Kabocik
Keyword(s):  
Consumer Behavior ◽  
Service Provider ◽  
Crucial Role ◽  
Target Audience ◽  
The Other ◽  
Significant Problem ◽  
Negative Effects ◽  
Consumer Decisions ◽  
Other Hand ◽  
Preventive Actions

The activities of misbehaving customers represent a significant problem for organizations across diverse sectors and industries. Their need for satisfaction is the most important driver of consumer behavior with the consumer choosing how they fulfill this need. Unfortunately, consumer decisions often lead to consumer misbehavior and negative effects on the service provider or on other consumers. Consumer misbehavior is difficult to control. First, it is not always possible to prove misbehavior of a particular consumer. On the other hand, preventive actions, like social campaigns, may not always reach the target audience. Moreover, neither service provider regulations nor monitoring of infrastructure sufficiently prevents consumers from misbehaving in every case. It seems, however, that the consumers who reject the fraudulent behavior of others have a crucial role in the fight against consumer misbehavior, as they are constant observers of this phenomenon and can react immediately. The aim of this article, therefore, is to present the concept of consumer misbehavior with examples relating to the tourism market. Moreover, the attitudes of consumers towards consumer misbehavior are examined through nethnographic research.

scholarly journals PERKAWINAN ANAK DALAM PERSPEKTIF HAK ASASI MANUSIA

EGALITA ◽  
2017 ◽  
Vol 11 (1) ◽  
Author(s):  
Dina Tsalist Wildana ◽  
Irham Bashori Hasba
Keyword(s):  
Southeast Asia ◽  
Children's Rights ◽  
The Other ◽  
Children’S Rights ◽  
Early Marriage ◽  
Negative Effects ◽  
Se Asia ◽  
Rights Of The Child ◽  
Other Hand ◽  
Age Of Marriage

<p>Marriage at the age of children still occur in some areas. Not only in Indonesia, in some areas is still high number of early marriages. Indonesia has had a regulation on the protection of children. But on the other hand the marriage at the age of children is still high even ranked second in Southeast Asia after Cambodia. This obviously shows that regulation owned does not run optimally. This article will discuss about some children's rights that are violated by the existence of early marriage. Despite showing some of the negative effects of marriage on the age of the child but at the end of this writing offers several formulations so that children in the age of marriage is not so much seized the rights of the child.</p><p>Perkawinan di usia anak masih marak terjadi di beberapa wilayah. Tidak hanya di Indonesia, di beberapa wilayah masih tinggi angka perkawinan dini.Di Indonesia telah memiliki regulasi tentang perlindungan anak. Namun disisi lain perkawinan di usia anak masih tinggi bahkan menduduki peringkat ke 2 se Asia Tenggara setelah Kamboja. Hal ini jelas menunjukkan regulasi yang dimiliki tidak berjalan optimal. Pada tulisan ini akan membahas tentang beberapa hak anak yang dilanggar dengan adanya perkawinan dini. Kendati menunjukkan beberapa dampak negatifdari perkawinan di usia anak namun di akhir tulisan ini menawarkan beberapa formulasi agar perkawinan di usia anak tidak begitu banyak menyita hak-hak anak.</p><p> </p><p align="center"> </p><p> </p>

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