An experiment was conducted to evaluate whether supplementation with a probiotic could enhance digestion and reduce mortality in the volcano rabbit in captivity. Two enclosures at Chapultepec Zoo, Mexico（114 individu...An experiment was conducted to evaluate whether supplementation with a probiotic could enhance digestion and reduce mortality in the volcano rabbit in captivity. Two enclosures at Chapultepec Zoo, Mexico（114 individuals） were used in a crossover design（two periods of 60 days） with the following treatments： control group and supplementation with Saccharomyces cerevisiae（2×108 CFU/exhibit/day）. Supplementation with the probiotic negatively affected（P〈0.01） the digestibility of dry matter, organic matter, neutral detergent fiber（NDF） and energy. Mortality increased（P〈0.04） following supplementation with the probiotic（4.26% vs. 8.89%）, primarily in the juvenile rabbits. The results indicate that yeast supplementation in the volcano rabbit negatively affects digestion and mortality in captivity.展开更多
Agriculture is harming its own future through soil degradation and pollution of the water that it generates. The different chemical analyses carried out on surface waters and the land surveys carried out in the Nakanb...Agriculture is harming its own future through soil degradation and pollution of the water that it generates. The different chemical analyses carried out on surface waters and the land surveys carried out in the Nakanbé basin have shown that agricultural practices contribute to water pollution. The monitoring of nitrate, orthophosphate and BOD5 levels in the dams of Goinré, Ziga and Bagré during the period from August to December revealed that agricultural practices lead to variation in these parameters. The average values for nitrates are 0.833 mg/L in the Goinré fresh waterbody, 1.372 mg/L in the Ziga reservoir, and 1.267 mg/L in the Bagré fresh waterbody. As for ortho phosphate, mean values are 0.357 mg/L in the Goinré reservoir, 0.157 mg/L in the Ziga reservoir and 0.123 mg/L in the Bagré reservoir. These average values are higher than the norms established by Nisbet and Vernaux (1970) for eutrophication. Nitrates and orthophosphate are the elements that contribute to the eutrophication of water surfaces in the Nakanbé basin, although this eutrophication is of low intensity. Of all pesticides encountered in our study sites, 45% are registered by the Sahelian Pesticides Committee (CSP): 35% are non-accredited and 20% are unknown in the global list authorized by the CSP in 2010.展开更多
The negative molecular swab does not mean that the body and mind are healed: even months after Sars-CoV-2 infection, patients may continue to have symptoms. The symptoms mainly present at 6 - 12 months in patients rec...The negative molecular swab does not mean that the body and mind are healed: even months after Sars-CoV-2 infection, patients may continue to have symptoms. The symptoms mainly present at 6 - 12 months in patients recovered from COVID-19 are: asthenia, breathlessness, difficulty in breathing deeply, myalgia, psychological disorders and difficulty in concentrating such as “brain fog”. The study was conducted from June 2021 to July 2021 at Health Prevention Department in Benevento (Campania Region, South Italy). 133 patients accepted the questionnaire in the form of a telephone interview. The purpose of this study is precisely to highlight how, although a year after infection, a number of patients still show post-COVID symptoms. In particular, 77 out of 133 positive patients became Long-Haulers (58%).展开更多
In the last two decades,the exploitation of marine renewable energies(70%of the globe is made up of oceans),especially wave energy,has attracted great interest,not only for their high potential,but also for their high...In the last two decades,the exploitation of marine renewable energies(70%of the globe is made up of oceans),especially wave energy,has attracted great interest,not only for their high potential,but also for their high energy density.The development of wave energy is suitable for countries or regions with extensive coastline and high waves approaching the shore.This paper focuses on the study of wave potential and wave energy distribution in the Casablanca-Mohammedia nearshore area(Moroccan Atlantic coast)in order to identify prospective wave energy hotspots.To achieve this purpose,the offshore wave potential was firstly estimated from a 20 years wave data provided by ECMWF(European Center for Medium range Weather Forecasts).In the second step,a numerical modeling of the wave propagation in the study area was performed using the SWAN model jointly with WAVEWATCHIII.The performance of the model to simulate accurately the wave field was evaluated in a real situation characterized by large waves.The model then was applied to determine the patterns of wave field in the Casablanca-Mohammedia nearshore area for a typical wave conditions(winter,summer and storm).The results of this study show the abundance of wave energy in the region with an average annual wave potential of about 22 kW/m.A seasonal variability of the wave resource was demonstrated,with values five times higher in winter than in summer.In addition,a major hotspot site was identified that should be considered when studyingWEC implementation.This hotspot is located at the southern edge of the Casablanca-Mohammedia coast,near the coastal area of Sidi Rahal.展开更多
Objective: To evaluate the toxicological and psychotropic properties of Calotropis(C.) procera. Methods: C. procera leaves and root-bark aqueous extracts were evaluated for their toxic and behavioral effects using adu...Objective: To evaluate the toxicological and psychotropic properties of Calotropis(C.) procera. Methods: C. procera leaves and root-bark aqueous extracts were evaluated for their toxic and behavioral effects using adult mice. Toxicity studies were carried out using Organisation for Economic Cooperation and Development guidelines 423 and 407 for acute and subacute evaluation. Behavioral studies were performed using traction test, fireplace test, hole-board test and forced-swimming test to evaluate the sedative, anxiety and depressive-like activities of the extracts. Results: Very low acute toxicity was observed in mice that received both leaves and rootbark extracts. The subacute test showed some morphological, biochemical and hematological changes in the treated groups. Behavioral assessment demonstrated anxiety effects on mice for C. procera leaf extract(400 mg/kg of body weight). Conclusions: The acute use of C. procera(leaves and root-barks) aqueous extracts could be considered as low toxic. However, their repeated uses could have harmful effect on some organs. Likewise, a single dose up to 400 mg/kg body weight of these extracts produce no sedative or depressive-like effect, but they possess possible dose dependent anxiety effect. Yet, more studies are necessary to relate these results to the chemical profile of the plant extracts.展开更多
文摘An experiment was conducted to evaluate whether supplementation with a probiotic could enhance digestion and reduce mortality in the volcano rabbit in captivity. Two enclosures at Chapultepec Zoo, Mexico（114 individuals） were used in a crossover design（two periods of 60 days） with the following treatments： control group and supplementation with Saccharomyces cerevisiae（2×108 CFU/exhibit/day）. Supplementation with the probiotic negatively affected（P〈0.01） the digestibility of dry matter, organic matter, neutral detergent fiber（NDF） and energy. Mortality increased（P〈0.04） following supplementation with the probiotic（4.26% vs. 8.89%）, primarily in the juvenile rabbits. The results indicate that yeast supplementation in the volcano rabbit negatively affects digestion and mortality in captivity.
文摘Agriculture is harming its own future through soil degradation and pollution of the water that it generates. The different chemical analyses carried out on surface waters and the land surveys carried out in the Nakanbé basin have shown that agricultural practices contribute to water pollution. The monitoring of nitrate, orthophosphate and BOD5 levels in the dams of Goinré, Ziga and Bagré during the period from August to December revealed that agricultural practices lead to variation in these parameters. The average values for nitrates are 0.833 mg/L in the Goinré fresh waterbody, 1.372 mg/L in the Ziga reservoir, and 1.267 mg/L in the Bagré fresh waterbody. As for ortho phosphate, mean values are 0.357 mg/L in the Goinré reservoir, 0.157 mg/L in the Ziga reservoir and 0.123 mg/L in the Bagré reservoir. These average values are higher than the norms established by Nisbet and Vernaux (1970) for eutrophication. Nitrates and orthophosphate are the elements that contribute to the eutrophication of water surfaces in the Nakanbé basin, although this eutrophication is of low intensity. Of all pesticides encountered in our study sites, 45% are registered by the Sahelian Pesticides Committee (CSP): 35% are non-accredited and 20% are unknown in the global list authorized by the CSP in 2010.
文摘The negative molecular swab does not mean that the body and mind are healed: even months after Sars-CoV-2 infection, patients may continue to have symptoms. The symptoms mainly present at 6 - 12 months in patients recovered from COVID-19 are: asthenia, breathlessness, difficulty in breathing deeply, myalgia, psychological disorders and difficulty in concentrating such as “brain fog”. The study was conducted from June 2021 to July 2021 at Health Prevention Department in Benevento (Campania Region, South Italy). 133 patients accepted the questionnaire in the form of a telephone interview. The purpose of this study is precisely to highlight how, although a year after infection, a number of patients still show post-COVID symptoms. In particular, 77 out of 133 positive patients became Long-Haulers (58%).
文摘In the last two decades,the exploitation of marine renewable energies(70%of the globe is made up of oceans),especially wave energy,has attracted great interest,not only for their high potential,but also for their high energy density.The development of wave energy is suitable for countries or regions with extensive coastline and high waves approaching the shore.This paper focuses on the study of wave potential and wave energy distribution in the Casablanca-Mohammedia nearshore area(Moroccan Atlantic coast)in order to identify prospective wave energy hotspots.To achieve this purpose,the offshore wave potential was firstly estimated from a 20 years wave data provided by ECMWF(European Center for Medium range Weather Forecasts).In the second step,a numerical modeling of the wave propagation in the study area was performed using the SWAN model jointly with WAVEWATCHIII.The performance of the model to simulate accurately the wave field was evaluated in a real situation characterized by large waves.The model then was applied to determine the patterns of wave field in the Casablanca-Mohammedia nearshore area for a typical wave conditions(winter,summer and storm).The results of this study show the abundance of wave energy in the region with an average annual wave potential of about 22 kW/m.A seasonal variability of the wave resource was demonstrated,with values five times higher in winter than in summer.In addition,a major hotspot site was identified that should be considered when studyingWEC implementation.This hotspot is located at the southern edge of the Casablanca-Mohammedia coast,near the coastal area of Sidi Rahal.
文摘Objective: To evaluate the toxicological and psychotropic properties of Calotropis(C.) procera. Methods: C. procera leaves and root-bark aqueous extracts were evaluated for their toxic and behavioral effects using adult mice. Toxicity studies were carried out using Organisation for Economic Cooperation and Development guidelines 423 and 407 for acute and subacute evaluation. Behavioral studies were performed using traction test, fireplace test, hole-board test and forced-swimming test to evaluate the sedative, anxiety and depressive-like activities of the extracts. Results: Very low acute toxicity was observed in mice that received both leaves and rootbark extracts. The subacute test showed some morphological, biochemical and hematological changes in the treated groups. Behavioral assessment demonstrated anxiety effects on mice for C. procera leaf extract(400 mg/kg of body weight). Conclusions: The acute use of C. procera(leaves and root-barks) aqueous extracts could be considered as low toxic. However, their repeated uses could have harmful effect on some organs. Likewise, a single dose up to 400 mg/kg body weight of these extracts produce no sedative or depressive-like effect, but they possess possible dose dependent anxiety effect. Yet, more studies are necessary to relate these results to the chemical profile of the plant extracts.
