scholarly journals Effects of artificial sweeteners on Lemna minor

2018 ◽  
Vol 36 (No. 5) ◽  
pp. 386-391 ◽  
Author(s):  
Klára Kobetičová ◽  
Klára Anna Mocová ◽  
Lucie Mrhálková ◽  
Šárka Petrová
Keyword(s):  
Chlorophyll Content ◽  
Surface Waters ◽  
Growth Parameters ◽  
Lemna Minor ◽  
Artificial Sweeteners ◽  
Negative Effects ◽  
Response Curves ◽  
Freshwater Plants ◽  
Set Up ◽  
The Impact

Artificial sweeteners are common micropollutants in the aquatic environment. They were detected both in surface waters and in groundwater. Human toxicity has also been studied quite intensively but their ecotoxicity has not been studied so far. To assess the impact of four artificial sweeteners (aspartame, sucralose, saccharine, and acesulfame K) and one natural sweetener (stevioside) on freshwater plants, a growth inhibition test was set up in the macrophyte duckweed (Lemna minor). Subsequently full dose-response curves were established by exposing L. minor plants to concentrations of each individual sweetener ranging from 6.25 mg/l up to 100 mg/l for 7 days. Three different endpoints were tested: frond number, frond area and total chlorophyll content. Tests were performed under sterile conditions. Sweeteners had various effects on Lemna plants. Saccharine, acesulfame K and stevioside did not cause any significant negative effects on any of the measured parameters. On the contrary, stevioside and saccharine caused slowly stimulative effects. Aspartame and sucralose inhibited growth parameters (frond number and frond area) but the chlorophyll content was not affected.

scholarly journals The Impact of Training Systems on Productivity and GHG Emissions from Grapevines in the Sughd Region in Northern Tajikistan

Agronomy ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 818
Author(s):  
Maciej Chowaniak ◽  
Naim Rashidov ◽  
Marcin Niemiec ◽  
Florian Gambuś ◽  
Andrzej Lepiarczyk
Keyword(s):  
Plant Protection ◽  
Growth Parameters ◽  
Ghg Emissions ◽  
Evaluation Process ◽  
Training System ◽  
Negative Effects ◽  
Training Systems ◽  
Yield Quality ◽  
Favorable Conditions ◽  
The Impact

Northern Tajikistan creates favorable conditions for growing grapes due to its climate. The choice of method of grape production to ensure a high-quality yield, while reducing the negative effects of such production on the environment, poses a serious challenge to implementation regarding the principles of sustainable production. In addition to the essential techniques associated with grapevine production, such as irrigation, fertilization, and plant protection, a training system plays a significant role. The objective of this research was to evaluate the environmental efficiency of vineyard training systems in northern Tajikistan. The indicators accepted for the evaluation process were the vegetative growth of plants, yield, and environmental pressure of production expressed by greenhouse gas (GHG) emissions. The single-factor experiment was conducted in Ghafurov District, and the following training systems were used: (A) multi-arm fan; (B) Umbrella Kniffin; (C) one-side multi-arm, paired planting. Growth parameters, yield, yield quality, and GHG emissions were evaluated. The cultivation of grapes in training system “C” resulted in higher values of parameters such as Practical Bud Fertility coefficient and fruiting shoots pcs and higher yields. The training systems were ranked according to GHG emissions per yield unit in the following order, from lower to higher emissions: C < B < A.

scholarly journals MANAGEMENT FUNCTION OF SUPPRESING MOBBING

2019 ◽  
Vol 34 (5) ◽  
pp. 1545-1548
Author(s):  
Šaban Mutatović ◽  
Nina Paunović ◽  
Miodrag Šmelcerović
Keyword(s):  
European Union ◽  
Extensive Study ◽  
Working Environment ◽  
Company Performance ◽  
The European Union ◽  
Negative Effects ◽  
Workplace Abuse ◽  
Set Up ◽  
Almost All ◽  
The Impact

This paper deals with emotional and physical abuse by co-workers or subordinates, as well as negative effects it might have on the personnel and the company performance. We also want to emphasise the role of management in its eliminating and suppressing. The first part explains the terms and the ideas of management and mobbing, including the functions and different levels of management, as well as different kinds of mobbing. The second part deals with the impact mobbing has on workers and business activities, the responsibility of management on suppressing physical and psychical abuse at workplace as well as creating positive working environment. n the last twenty years, workplace abuse has become a particularly significant problem. The first extensive study of this phenomenon was conducted in Sweden under the leadership of Heinz Leymann, who also defined mobbing as psychological terror in the workplace, which refers to unethical and hostile communication by one and / or more persons to the most commonly one person who becomes helpless and unable Defense. Such activities take place at least once a week for at least six months leading to mental and social disorders. It is believed that this problem is on the rise in almost all countries of the European Union and the world, and for this reason laws are being adopted addressing the issue of mobbing both at the national and European Union levels. In addition, numerous associations have been set up worldwide to prevent workplace abuse.

scholarly journals Biotization of tissue culture banana plantlets with Methylobacterium salsuginis to enhance the survival and growth under greenhouse and open environment condition

2021 ◽  
Vol 42 (6) ◽  
pp. 1452-1460
Author(s):  
P. Pushpakanth ◽  
◽  
R. Krishnamoorthy ◽  
R. Anandham ◽  
M. Senthilkumar ◽  
...  
Keyword(s):  
Tissue Culture ◽  
Chlorophyll Content ◽  
Growth Parameters ◽  
Lower Surface ◽  
Culture Vessel ◽  
Environmental Condition ◽  
Open Environment ◽  
Number Of Leaves ◽  
Survival And Growth ◽  
The Impact

Aim: This study aimed to investigate the impact of M. salsuginis TNMB03 biotization on tissue culture banana cv. Grande Naine plantlets growth and survival under greenhouse and open environmental condition (exposed to direct sunlight). Methodology: Banana plantlets were transferred from culture flasks to protray and maintained under the greenhouse and open environmental condition for 30 days with or without M. salsuginis TNMB03 treatment. After 30 days, plant growth parameters like pseudostem height, girth, number of leaves, leaf area, fresh and dry biomass, root parameters, plantlet survival, chlorophyll a and b, total chlorophyll, carotenoids and soluble protein and Methylobacterium population in upper and lower surface of leaf, as well as endophytic population were assessed. Results: This study showed that the plantlets biotized with M. salsuginis TNMB03 had better acclimatization response under both the experimental condition than that of uninoculated plantlets. Positive influence on the survival and growth of M. salsuginis TNMB03 biotized plantlets was observed when transferred directly to greenhouse and open environmental condition. Inoculation of M. salsuginis TNMB03 increased the plant height, girth and number of leaves, root length, lateral root and biomass in comparison to the uninoculated plantlets in greenhouse and open environment. Uninoculated plantlets kept under open environment had lower chlorophyll content and sun scorching damages compared to M. salsuginis TNMB03 inoculated plants, which had dark green leaves and increased chlorophyll content. Interpretation: This study shows a new potential technique of using M. salsuginis TNMB03 in tissue culture plantlets, which can help in enhancing the growth of plantlets transferred from culture vessel to greenhouse or open environmental condition without undergoing the routine acclimatization procedure.

scholarly journals Biostimulant Effects of an Aqueous Extract of Duckweed (Lemna minor L.) on Physiological and Biochemical Traits in the Olive Tree

Agriculture ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 1299
Author(s):  
Luca Regni ◽  
Daniele Del Buono ◽  
Begoña Miras-Moreno ◽  
Biancamaria Senizza ◽  
Luigi Lucini ◽  
...  
Keyword(s):  
Chlorophyll Content ◽  
Aqueous Extract ◽  
Plant Biomass ◽  
Growth Parameters ◽  
Lemna Minor ◽  
Net Photosynthesis ◽  
Dry Weight ◽  
Co2 Concentration ◽  
Olive Tree ◽  
Water Volume

Biostimulants are becoming increasingly popular in agriculture for their ability to induce beneficial effects in crops, paving the way towards the identification of new materials with biostimulant potential. This study evaluated the potential of different concentrations of an aqueous extract (0.25%, 0.50%, and 1.00%, dry weight/water volume, respectively) obtained from duckweed (Lemna minor L.) to stimulate olive plants. Leaf net photosynthesis (Pn), leaf transpiration rate (E), stomatal conductance (gs), sub-stomatal CO2 concentration (Ci), chlorophyll content and other plant growth parameters were investigated. As a result, the extract improved Pn, gs, Ci, chlorophyll content and plant biomass production (leaf fresh and dry weight). Furthermore, the duckweed extract generally increased the uptake of nitrogen (N), potassium (K), calcium (Ca), magnesium (Mg), iron (Fe) and zinc (Zn), while it did not influence the content of sodium (Na), manganese (Mn) and copper (Cu). The untargeted metabolomic profiling of the extract revealed the presence of signalling compounds (including phytohormones), phenolics and glutathione. Such broad diversity of bioactives may support the stimulatory potential observed in olive. In summary, this study revealed for the first time that duckweed could be seen as a promising species to obtain extracts with biostimulant properties in olive trees.

Set Up of an Experimental Facility for the Investigation of Wet Compression on a Multistage Compressor

2010 ◽  
Author(s):  
R. Bettocchi ◽  
M. Morini ◽  
M. Pinelli ◽  
P. R. Spina ◽  
M. Venturini ◽  
...  
Keyword(s):  
Gas Turbines ◽  
Test Facility ◽  
Experimental Facility ◽  
Negative Effects ◽  
Technical Literature ◽  
Multistage Compressor ◽  
Wet Compression ◽  
Set Up ◽  
The University ◽  
The Impact

At present, inlet fogging and wet compression are two of the most widely used approaches to enhance gas turbine performance, especially during hot seasons. However, potentially negative effects of these practices on long-term operational integrity of gas turbines should be evaluated carefully; in particular, wet compression may lead to the erosion of first compressor stages, due to the impact of water droplets within the flow at compressor intake. This issue is still controversial in technical literature, since only limited historical field operating data and information are available. Therefore, a test facility was specifically set up in the laboratories of the University of Ferrara, to evaluate the effects of wet compression on a small-size compressor. This paper presents the experimental facility developed for wet compression investigation and some preliminary results.

Setup of an Experimental Facility for the Investigation of Wet Compression on a Multistage Compressor

2011 ◽  
Vol 133 (10) ◽  
Author(s):  
R. Bettocchi ◽  
M. Morini ◽  
M. Pinelli ◽  
P. R. Spina ◽  
M. Venturini ◽  
...  
Keyword(s):  
Gas Turbines ◽  
Test Facility ◽  
Experimental Facility ◽  
Negative Effects ◽  
Technical Literature ◽  
Multistage Compressor ◽  
Wet Compression ◽  
Set Up ◽  
The University ◽  
The Impact

At present, inlet fogging and wet compression are two of the most widely used approaches to enhance gas turbine performance, especially during hot seasons. However, potentially negative effects of these practices on long-term operational integrity of gas turbines should be evaluated carefully; in particular, wet compression may lead to the erosion of first compressor stages due to the impact of water droplets within the flow at compressor intake. This issue is still controversial in technical literature since only limited historical field operating data and information are available. Therefore, a test facility was specifically set up in the laboratories of the University of Ferrara, to evaluate the effects of wet compression on a small-size compressor. This paper presents the experimental facility developed for wet compression investigation and some preliminary results.

scholarly journals Industrial Processes Management for a Sustainable Society: Global Research Analysis

Processes ◽  
2020 ◽  
Vol 8 (5) ◽  
pp. 631 ◽  
Author(s):  
Emilio Abad-Segura ◽  
Manuel E. Morales ◽  
Francisco Joaquín Cortés-García ◽  
Luis Jesús Belmonte-Ureña
Keyword(s):  
Industrial Sector ◽  
Industrial Processes ◽  
Sustainable Society ◽  
Negative Effects ◽  
Scientific Publications ◽  
Public And Private ◽  
The Sustainable Development ◽  
Productivity Indicators ◽  
Set Up ◽  
The Impact

Few decades ago, the development of the industrial sector was disconnected from society’s protection. Negative effects awareness emerges from the current industrial processes through the Sustainable Development Goals (SDGs), considering the causal implications to build up a more sustainable society. The aim of this study is to analyze the state of the art in industrial processes management to obtain positive and sustainable effects on society. Thus, a bibliometric analysis of 1911 articles was set up during the 1988–2019 period, bringing up the authors’ productivity indicators in the scientific field, that is, journals, authors, research institutions, and countries. We have identified environmental management; the impact assessments of industrial processes on the environment and its relation with a more sustainable society; as well as the study of the sustainable management of water resources as the related axes in the study of environmental protection with political, economic, and educational approaches. The growing trend of world scientific publications let us observe the relevance of industrial processes management in the implementation of efficient models to achieve sustainable societies. This research contributes to the academic, scientific, and social debate on decision-making both in public and private institutions, and in multidisciplinary groups.

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 Impact of Endomycorrhization on the Nursery Growth of Seedlings of a Threatened Ivorian Forest Species Pterygota macrocarpa K. Schum (Malvaceae)

2021 ◽  
pp. 75-86
Author(s):  
Voko Bi Rosin Don Rodrigue ◽  
Konan Adjoua Estelle ◽  
Kouassi Kouassi Clément ◽  
Kocoun Konan Dieudonné ◽  
Konaté Ibrahim
Keyword(s):  
Cote D'ivoire ◽  
Arbuscular Mycorrhizae ◽  
Côte D’Ivoire ◽  
Growth Parameters ◽  
Common Species ◽  
Protective Measures ◽  
Cote D’Ivoire ◽  
Côte D'ivoire ◽  
Set Up ◽  
The Impact

Aims: Pterygota macrocarpa, a common species in the forests of Côte d'Ivoire, is threatened with extinction due to overexploitation. Protective measures for P. macrocarpa could consist in the integration of arbuscular mycorrhizae in the reforestation of this species. The objective of this study was to evaluate the impact of arbuscular mycorrhizae inoculation on the resistance and development of P. macrocarpa plants. Study Design: The design is completely randomized and includes one (1) plant species (Pterygota macrocarpa), three (3) treatments (local inoculum 1, commercial inoculum 2 and non-inoculated control) and 20 seedlings per treatment. Place and Duration of Study: The experimental study was set up at the border of the experimental forest of the Northern site of INP-HB (National Polytechnic Institute Houphouët-Boigny, Yamoussoukro, Côte d’Ivoire) from February to May 2018. Methodology: Thus, from seedlings collected in the arboriculture of the INP-HB of Yamoussokro, the effects of mycorrhization through treatments on the mineral nutrition and on the growth parameters of P. macrocarpa were evaluated during 120 days of culture in nursery. Results: The mycorrhised plants survived 100% while the control plants had 90% survival rate. The mycorrhizal intensity of the roots was 19.21% for inoculum 1 and 10.40% for inoculum 2. The plants treated with inoculum 1 had the highest mineral content, especially phosphorus (0.3 ppm) and nitrogen (2.6%). The vegetative growth of inoculum 1 treated plants was more accelerated than that of the other two treatments. Local inoculum 1 was more effective than commercial inoculum 2. Conclusion: The integration of local mycorrhizal inocula in the reforestation of P. macrocarpa seedlings could be a sustainable solution for the restoration of degraded forests.

scholarly journals Kaolin application to increase lettuce (Lactuca sativa) growth under suboptimal watering condition

2021 ◽  
Vol 948 (1) ◽  
pp. 012087
Author(s):  
H F Fawwaz ◽  
S Lathifatunnisa ◽  
N M Hemelda ◽  
R Yuniati
Keyword(s):  
Chlorophyll Content ◽  
Foliar Application ◽  
Growth Parameters ◽  
Negative Control ◽  
Leaf Length ◽  
Drought Condition ◽  
Leaf Chlorophyll Content ◽  
Leaf Chlorophyll ◽  
Lettuce Growth ◽  
The Impact

Abstract Lettuce is a crop sensitive to water availability as it needs more water in cultivation. Kaolin has been reported to reduce the impact of drought stress in plants. However, the use of kaolin to increase lettuce growth under drought condition has not been reported yet. In this study, the effect of kaolin to increase the growth of lettuce under suboptimal watering condition was investigated. Kaolin foliar application (3%, 5%, and 6%) was tested on a group consisting of 5 lettuce plants grown under reduced watering condition in a greenhouse. Lettuce height, number of leaves, root length, leaf length and width, fresh and dry weight of lettuce, and leaf chlorophyll content were observed. Kaolin applications significantly increased the growth of lettuce in most parameters compared to the negative control (reduced watering condition, without kaolin). Kaolin 3% application presented the best treatment to increase growth parameters. All kaolin applications did not affect chlorophyll content significantly under lower watering condition. In conclusion, kaolin was able to reduce the impact of reduced watering condition and increase lettuce growth but showed no effect on the leaf chlorophyll content. Thus, further evaluation of kaolin application in lettuce under drought condition is needed.

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