scholarly journals Effect of PCP Pesticide Contamination on Soil Quality

2021 ◽  
Author(s):  
Rim Werheni Ammeri ◽  
Yassine Hidri ◽  
Hassen Abdenaceur
Keyword(s):  
Human Health ◽  
Chloride Content ◽  
Microbial Populations ◽  
Long Term Effects ◽  
Pesticide Contamination ◽  
Negative Effects ◽  
Soil Microbial ◽  
Soil Systems ◽  
Long Time ◽  
Short And Long Term

In recent years, soil contamination with pesticides has become a crucial news issue with serious short- and long-term effects on human health and its environment. Pesticides play a significant role in the success of modern farming and food production. These compounds have potential for toxicity and adverse effects on human health and ecological soil systems. Pentachlorophenol (PCP) is one of the most recalcitrant chemicals polluting the environment for its stable aromatic ring system and chloride content. Nowadays, many sites are contaminated with this substance. In these areas, concentrations may stay high for a long time because of slow degradation in the soil due to the negative effects that PCP has on soil microbial populations. Bioremediation of PCP contaminated sites can be realized introducing directly, into a contaminated system, microorganisms able to consume selectively the target compound (bioaugmentation) or increasing the microbial indigenous population by addiction of nutrients in form of organic and/or inorganic fertilizers and biosolids (biostimulation). In the present chapter, we present an overview of the effect of PCP pesticide contamination on soil microbial populations (density and diversity), enzymatic activity and physicochemical parameters. Additionally, the bioremediation process will be detailed.

Long-Term Effects of Land Application of Class B Biosolids on the Soil Microbial Populations, Pathogens, and Activity

2010 ◽  
Vol 39 (1) ◽  
pp. 402-408 ◽  
Author(s):  
Huruy Zerzghi ◽  
Charles P. Gerba ◽  
John P. Brooks ◽  
Ian L. Pepper
Keyword(s):  
Land Application ◽  
Microbial Populations ◽  
Long Term Effects ◽  
Soil Microbial ◽  
Class B

Effects of long-lasting cold storage on Tenebrio molitor larvae (Coleoptera: Tenebrionidae)

2021 ◽  
pp. 1-6
Author(s):  
S. Errico ◽  
S. Dimatteo ◽  
S. Moliterni ◽  
F. Baldacchino
Keyword(s):  
Low Temperature ◽  
Cold Storage ◽  
Tenebrio Molitor ◽  
Larval Survival ◽  
Long Term Effects ◽  
Negative Effects ◽  
Information Research ◽  
Long Time ◽  
Percentage Weight

Insects are an emergent source of proteins in the world nutrition, both for humans and farmed animals, moreover they represent a novel food in Europe. The interest in Tenebrio molitor (L.) has particularly grown because its larvae are very rich of high biological value proteins. Although rearing of T. molitor has lately increased, the long-time conservation of alive larvae, very useful for both production and research, needs more information. Research studies conducted so far have investigated the reactions to low temperature on mealworms pupae and adults, or on larvae at 10 °C and for no more than 48 h. The aim of this study is to test the long-term effects of different times of cold storage at 10 °C on the larval survival and on the ability to become healthy adults and to potentially reproduce normally. The insects, divided in experimental groups, were refrigerated on sterile bran (and 10% of yeast) at 10±1 °C and 63% RH for 4 different periods of storage, from 30 to 120 days. Larval survival (i.e. number of larvae alive and number of pupae, expressed as a percentage), weight gain and presence of pupae were detected at the end of each period. The ability to complete the cycle was assessed by detecting the number of hatched pupae, deformed and well-formed adults. Our research results point out the possibility to store T. molitor alive larvae for long time (at least 120 days) at low temperature without significant negative effects on their ability to survive, with a relatively small loss (15.81%) and a very small percentage of deformed adults (4.07%). Further researches will be carried out to test the fertility of the well-formed adults and their ability to reproduce.

Short-Term Climatic Events—Synthesis

2003 ◽  
Author(s):  
David Greenland
Keyword(s):  
Puerto Rico ◽  
New England ◽  
Long Term Effects ◽  
Short Term ◽  
Ecosystem Responses ◽  
The Future ◽  
Long Time ◽  
Short And Long Term ◽  
Effects Of Drought

Short-term climatic events produce some of the most dramatic ecosystem responses. Sometimes the responses may last for a long time into the future. Three themes will be emphasized in this synthesis. The first is that shortterm climatic events have both short- and long-term responses in the ecosystem. Second, the timing of short-term events is important in partially determining the kind and degree of ecosystem response that might occur. A third theme is the importance of putting short-term variability into a long-term context. The chapters about hurricanes and droughts in this section demonstrate that shortterm climatic events may have short- and long-term responses in the ecosystem. Both the short- and long-term responses are important. The short-term responses have noteworthy economic influences in the agricultural ecosystem. One could argue that the ecosystems containing species with short life spans such as grasslands are able to respond and recover from a short-term climatic disturbance more quickly than those ecosystems with longer lived species such as trees. Corn responds quickly to variability in precipitation during important parts of the growing season. Gage believes the long-term effects of a short-term drought on annual rotational agronomic systems are generally minimal. Other LTER studies have documented strong relationships between annual precipitation and grassland aboveground net primary productivity (Knapp et al. 1998). Conversely, the Coweeta study brings to our attention the insidious, long-term effects of drought that quietly kills trees and leaves their dead necromass on the landscape for decades into the future. However, each ecosystem is responding at its own characteristic timescale. Boose notes that the mixed hardwood forests of central New England and the Tabonuco forests of Puerto Rico both exhibit remarkable resiliency to wind damage. In both cases, despite major structural reorganization after a hurricane, there was rapid regeneration of canopy cover through releafing, sprouting, or recruitment, which helped to reduce impacts on soil moisture, temperature, and nutrient cycling processes. Nevertheless, some signs of the hurricane impact are present for decades, although less so in Puerto Rico where decomposition and regeneration rates are much faster than in New England.

scholarly journals The Impact of Parental Incarceration on Sport Participation Trajectories from Adolescence to Young Adulthood

2020 ◽  
Vol 17 (14) ◽  
pp. 5229
Author(s):  
Ji-Won Park ◽  
Jongnam Hwang ◽  
Chung Gun Lee ◽  
Hyoyeon Ahn ◽  
Hanbeom Kim
Keyword(s):  
Young Adulthood ◽  
Sport Participation ◽  
Sports Participation ◽  
The United States ◽  
Parental Incarceration ◽  
Long Term Effects ◽  
Negative Effects ◽  
Short And Long Term ◽  
Set Up ◽  
The Impact

Given the potential negative effects of parental incarceration on millions of people, it is critical to examine the possible short- and long-term effects of parental incarceration on individuals. This study examines the effect of parental incarceration on the sports participation trajectories of children ranging from adolescence to young adulthood. Group-based trajectory models were set up using SAS analytics software to examine how parental incarceration affects the sports participation trajectories of children from adolescence to young adulthood. Data were drawn from the first four waves of the National Longitudinal Study of Adolescent Health in the United States (N = 6504). Neither paternal nor maternal incarceration had any significant effect on the trajectories of male participants. On the other hand, females who experienced father incarceration were more likely to be in the low-stable versus high-decreasing group (coefficient = −0.721, p < 0.05). Based on the results of this study, we conclude that programs promoting sports participation are needed for females who have experienced paternal incarceration. The results of this study also suggest that group-based trajectory modeling is a useful technique to examine the trajectories of sports participation from adolescence through to young adulthood.

scholarly journals Unexpected short- and long-term effects of chronic adolescent HU-210 exposure on emotional behavior

2021 ◽  
Author(s):  
Miguel Farinha-Ferreira ◽  
Nádia Rei ◽  
Jo&atildeo Fonseca-Gomes ◽  
Catarina Miranda-Lourenço ◽  
Paula Serr&atildeo ◽  
...  
Keyword(s):  
Cannabinoid Receptor ◽  
Emotional Behavior ◽  
Sprague Dawley ◽  
Long Term Effects ◽  
Negative Effects ◽  
Short Term ◽  
Receptor Agonists ◽  
Sprague Dawley Rats ◽  
Short And Long Term

Chronic adolescent cannabinoid receptor agonist exposure has been shown to lead to persistent increases in depressive-like behaviors. This has been a key obstacle to the development of cannabinoid-based therapeutics. However, most of the published work has been performed with only three compounds, namely ∆9-tetrahydrocannabinol, CP55,940 and WIN55,212-2. Hypothesizing that different compounds may lead to distinct outcomes, we herein used the highly potent CB1R/CB2R full agonist HU-210, and first aimed at replicating cannabinoid-induced long-lasting effects, by exposing adolescent female Sprague-Dawley rats to increasing doses of HU-210, for 11 days and testing them at adulthood, after a 30-day drug washout. Surprisingly, HU-210 did not significantly impact adult anxious- or depressive-like behaviors. We then tested whether chronic adolescent HU-210 treatment resulted in short-term (24h) alterations in depressive-like behavior. Remarkably, HU-210 treatment simultaneously induced marked antidepressant- and prodepressant-like responses, in the modified forced swim (mFST) and sucrose preference tests (SPT), respectively. Hypothesizing that mFST results were a misleading artifact of HU-210-induced behavioral hyperreactivity to stress, we assessed plasmatic noradrenaline and corticosterone levels, under basal conditions and following an acute swim-stress episode. Notably, we found that while HU-210 did not alter basal noradrenaline or corticosterone levels, it greatly augmented the stress-induced increase in both. Our results show that, contrary to previously studied cannabinoid receptor agonists, HU-210 does not induce persisting depressive-like alterations, despite inducing marked short-term increases in stress-induced reactivity. By showing that not all cannabinoid receptor agonists may induce long-term negative effects, these results hold significant relevance for the development of cannabinoid-based therapeutics.

Subabusive Violence in Child Rearing in Middle-class American Families

PEDIATRICS ◽  
1996 ◽  
Vol 98 (4) ◽  
pp. 845-848
Author(s):  
Anthony M. Graziano ◽  
Jessica L. Hamblen ◽  
Wendy A. Plante
Keyword(s):  
Public Schools ◽  
Middle Class ◽  
Corporal Punishment ◽  
Best Interests ◽  
Child Rearing ◽  
Long Term Effects ◽  
Negative Effects ◽  
Short And Long Term ◽  
Humanitarian Values ◽  
Culture Of Violence

This article will summarize the results of our recent study of subabusive violence in child rearing in middle-class families, and will then discuss the implications of the findings for the questions before us—"What are the short and long term effects of corporal punishment of children?"; "Should we try to reduce its use?"; "If so, can we be advised by these results on how to accomplish that?" Subabusive violence against children1 consists of those ordinary, everyday acts of violence—spanking, hitting, slapping, etc—that do not rise to the common definitions of abuse. Most parents accept these as proper acts of discipline in the children's best interests. The pervasiveness of subabusive violence in child rearing is not in doubt. It is rooted solidly in American traditions2 and is supported by commonly held religious beliefs.3 Surveys4-6 indicate that some 90% of parents use corporal punishment in child rearing, and its continued use in public schools has been well-documented.7 Although its pervasiveness is not in doubt, there are questions about its effects on children—intended and unintended, positive and negative effects. Is it an effective set of disciplinary tools? Does it harm children? Do its costs outweigh its benefits? There is no doubt that abusive violence against children has harmful effects, but what about subabuse? It has been argued that subabusive violence may have direct negative effects on child development, may be a risk factor for abuse, may escalate to abuse under some still unknown conditions, may violate humanitarian values, and may contribute to maintaining a general culture of violence.1

Undesirable Effects of Goal Setting on Perceived Fairness, Commitment, and Unethical Behavior

2018 ◽  
Vol 62 (2) ◽  
pp. 97-107 ◽  
Author(s):  
Nina Keith
Keyword(s):  
Goal Setting ◽  
Unethical Behavior ◽  
The United States ◽  
Goal Commitment ◽  
Management Technique ◽  
Long Term Effects ◽  
Perceived Fairness ◽  
Negative Effects ◽  
Positive Effects ◽  
And Performance

Abstract. The positive effects of goal setting on motivation and performance are among the most established findings of industrial–organizational psychology. Accordingly, goal setting is a common management technique. Lately, however, potential negative effects of goal-setting, for example, on unethical behavior, are increasingly being discussed. This research replicates and extends a laboratory experiment conducted in the United States. In one of three goal conditions (do-your-best goals, consistently high goals, increasingly high goals), 101 participants worked on a search task in five rounds. Half of them (transparency yes/no) were informed at the outset about goal development. We did not find the expected effects on unethical behavior but medium-to-large effects on subjective variables: Perceived fairness of goals and goal commitment were least favorable in the increasing-goal condition, particularly in later goal rounds. Results indicate that when designing goal-setting interventions, organizations may consider potential undesirable long-term effects.

Saskatchewan Highways and Transportation Reduced Tire Pressure Initiative

1997 ◽  
Vol 1589 (1) ◽  
pp. 1-8 ◽  
Author(s):  
Thomas L. Davies ◽  
Tami F. Wall ◽  
Allan Carpentier
Keyword(s):  
High Speed ◽  
Membrane Surface ◽  
Vehicle Stability ◽  
Road Maintenance ◽  
Long Term Effects ◽  
Tire Pressure ◽  
Reduced Pressure ◽  
Maintenance Costs ◽  
Short And Long Term

After examination of the research carried out by other agencies, Saskatchewan Highways and Transportation (SHT) embarked on an initiative to adapt low tire pressure technologies to the province's needs and environment. The focus of the initiative was to explore several technical questions from SHT's perspective: (a) Can low tire pressures be used to increase truck weights from secondary to primary without increasing road maintenance costs on thin membrane surface roads? (b) What are the short- and long-term effects of tire heating under high-speed/high-deflection constant reduced pressure (CRP) operations in a Saskatchewan environment? (c) What effects do lower tire pressures have on vehicle stability at highway speeds? To date, significant opportunities have been noted on local hauls (less than 30 min loaded at highway speeds) for CRP operation and long primary highway hauls that begin or end in relatively short secondary highway sections that limit vehicle weight allowed for the whole trip for central tire inflation technology. The background and environment for the initiative and the investigations and demonstrations envisioned and undertaken are briefly outlined.

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