Geochemical, Mineralogical and Isotopic Fracturing during the Progressive Evaporation of Chott Djerid Brine (Southern Tunisia)

2022 ◽  
Vol 58 ◽  
pp. 107-125
Author(s):  
Sana Bedoui ◽  
Elhoucine Essefi ◽  
Houda Besser ◽  
Ali Benour ◽  
Yosra Ayadi ◽  
...  
Keyword(s):  
Salt Lakes ◽  
Economic Interest ◽  
Liquid Samples ◽  
Southern Tunisia ◽  
The World ◽  
Low Costs ◽  
Southwestern Tunisia

Djerid Chott, in southwestern Tunisia, is one of the biggest salt lakes in the world. This work follows the specific precipitation of evaporites through progressive evaporation of Chott Djerid brines using geochemical, isotopic and mineralogical approaches, to explain the intricacy of the working of saline frameworks controlled basically by climatic driving and the underlying geochemical structure acquired from the geographical system. Toward the finish of every evaporation step, solid and liquid samples went through analyses. Djerid brine is remarkably saline (427.7 g/l) and it is supersaturated contrasted with halite. The outcomes indicated that the Chott Djerid brines shaped fundamentally Cl--Na+-SO4- type geochemistry. Added to halite and gypsum as significant minerals, other minor minerals including carnallite, hexahydrite and sylvite were recognized in various phases of progressive evaporation of Djerid brine. Regardless of their low costs, significant minerals are of geo-economic interest because of their high amounts of production. Then, minor valuable minerals secure their geo-economic interest from their excessive costs. In this work, we find the window of precipitation of these valuable minerals' at the evaporation paces of 80% and 100%.

scholarly journals The Monetary Crisis and Foundation for Reserve Bank of India (1890-1935)

2020 ◽  
Author(s):  
M. Balaji
Keyword(s):  
World War I ◽  
Interwar Period ◽  
Banking System ◽  
Economic Interest ◽  
Stabilization Policy ◽  
British India ◽  
World War ◽  
Reserve Bank ◽  
The World ◽  
Reserve Bank Of India

The monetary policy of British India was highly controversial during the interwar period as it aimed to protect the budgetary obligations and private commerce. The currency stabilization policy was seen as a tool to protect the British economic interest while they ruled India. The currency came under serious pressure during the World War I and Great depression, the facets of Indian currency’s dependence was exposed through the modified council bill system and Gold exchange standard. The much-needed currency reforms and banking system were conceded by the colonial administration after much wrangling for half a century.

Customer Relationship Management through Communication Strategy

2012 ◽  
pp. 145-155
Author(s):  
Abdel Moneim M. B. Ahmed
Keyword(s):  
Exchange Rates ◽  
Communication Strategy ◽  
Customer Relationship ◽  
Production Methods ◽  
Competitive Edge ◽  
The World ◽  
Low Costs ◽  
Business Changes ◽  
Communication Methods ◽  
Future Business

Changes in today’s organisations are often necessary for survival due to the world becoming smaller and the threat from foreign imports becoming more apparent to businesses. Often the most damaging element of this foreign threat is the low costs at which they can operate. Many factors, including inexpensive labour, exchange rates and economies, make production more efficient and reduce the overall costs significantly to enable a significant competitive edge. For example, Fibres is a polyester manufacturer who faces this threat and has realised the need for change towards more speciality products with differentials other than price. However, this will involve major changes in production, including the production methods and the adoption of TQM to ensure that the differential of quality is utilized. This paper examines communication as an enabler for change and studies the current communication methods within the company against the desired improvement processes from groups within those companies, culminating in a targeted internal marketing strategy to aid future business changes.

Phytochemicals as Therapeutics Against COVID-19: An In-Silico Study

2020 ◽  
Author(s):  
Debraj Koiri ◽  
Ditam Chakraborty ◽  
Pranotosh Das ◽  
Rajkumar Rana ◽  
Soumyanil Chatterjee ◽  
...  
Keyword(s):  
In Silico ◽  
Therapeutic Agents ◽  
Binding Energies ◽  
Daily Lives ◽  
Lab Experiments ◽  
In Silico Studies ◽  
In Silico Study ◽  
The World ◽  
Wet Lab ◽  
Low Costs

Since December 2019, the worldwide spread of COVID-19 has brought the majority of the world to a standstill, affecting daily lives as well as economy. Under these conditions, it is imperative to develop a cure as soon as possible. On account of some of the adverse side effects of the existing conventional drugs, researchers all around the world are screening natural antiviral phytochemicals as potential therapeutic agents against COVID-19. This paper aims to review interactions of some specific phytochemicals with the receptor binding domain (RBD) of the Spike glycoprotein of SARS-CoV-2 and suggest their possible therapeutic applications. Literature search was done based on the wide array of in-silico studies conducted using broad spectrum phytochemicals against SARS-CoV-2 and other viruses. We shortlisted 26 such phytochemicals specifically targeting the S protein and its interactions with host receptors. To validate the previously published results, we also conducted molecular docking using the AutoDockVina application and identified 6 high potential phytochemicals for therapeutic use based on their binding energies. Besides this, availability of these compounds, their mode of action, toxicity data and cost-effectiveness were also taken into consideration. Our review specifically identifies 6 phytochemicals that can be used as potential treatments for COVID-19 based on their availability, toxicology results and low costs of production. However, all these compounds need to be further validated by wet lab experiments and should be approved for clinical use only after appropriate trials.

scholarly journals Is the low-cost EyeTribe eye tracker any good for research?

2014 ◽  
Author(s):  
Edwin Dalmaijer
Keyword(s):  
Low Cost ◽  
Sampling Rate ◽  
High Accuracy ◽  
Eye Tracker ◽  
The World ◽  
Quality Video ◽  
Low Costs ◽  
Precision And Accuracy ◽  
High Quality Video ◽  
Tracking Technology

Eye-tracking technology is becoming increasingly cheaper, both on the hardware and on the software front. Currently, the EyeTribe tracker is the most inexpensive commercial eye tracker in the world, at a price of $99. The low costs make it a potentially interesting resource for research, but no objective testing of its quality has been performed yet. Here the EyeTribe tracker is compared with an EyeLink 1000, a high-quality video eye tracker. Results indicate that the spatial precision and accuracy are good enough for fixation checking, point-of-regard analyses, and pupilometry. However, the low sampling rate renders the device unsuitable for testing high-accuracy saccade metrics. Additionally, open-source toolboxes for Matlab and Python, and a plug-in for OpenSesame are presented, which can be used to interface with the EyeTribe tracker.

scholarly journals Zebrafish as an Animal Model for Testing Agents with Antidepressant Potential

Life ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 792
Author(s):  
Joanna Lachowicz ◽  
Karolina Niedziałek ◽  
Ewelina Rostkowska ◽  
Aleksandra Szopa ◽  
Katarzyna Świąder ◽  
...  
Keyword(s):  
Danio Rerio ◽  
Developmental Stages ◽  
Mental Disease ◽  
Zebrafish Model ◽  
Significant Deterioration ◽  
Behavioral Studies ◽  
The World ◽  
Low Costs ◽  
Early Developmental ◽  
A Current

Depression is a serious mental disease that, according to statistics, affects 320 million people worldwide. Additionally, a current situation related to the COVID-19 pandemic has led to a significant deterioration of mental health in people around the world. So far, rodents have been treated as basic animal models used in studies on this disease, but in recent years, Danio rerio has emerged as a new organism that might serve well in preclinical experiments. Zebrafish have a lot of advantages, such as a quick reproductive cycle, transparent body during the early developmental stages, high genetic and physiological homology to humans, and low costs of maintenance. Here, we discuss the potential of the zebrafish model to be used in behavioral studies focused on testing agents with antidepressant potential.

scholarly journals Lunar resources

2015 ◽  
Vol 39 (2) ◽  
pp. 137-167 ◽  
Author(s):  
Ian A. Crawford
Keyword(s):  
World Economy ◽  
Raw Materials ◽  
Economic Resources ◽  
Resource Extraction ◽  
Lunar Exploration ◽  
Economic Interest ◽  
The Moon ◽  
Resource Base ◽  
The Earth ◽  
The World

There is growing interest in the possibility that the resource base of the Solar System might in future be used to supplement the economic resources of our own planet. As the Earth’s closest celestial neighbour, the Moon is sure to feature prominently in these developments. In this paper I review what is currently known about economically exploitable resources on the Moon, while also stressing the need for continued lunar exploration. I find that, although it is difficult to identify any single lunar resource that will be sufficiently valuable to drive a lunar resource extraction industry on its own (notwithstanding claims sometimes made for the 3He isotope, which are found to be exaggerated), the Moon nevertheless does possess abundant raw materials that are of potential economic interest. These are relevant to a hierarchy of future applications, beginning with the use of lunar materials to facilitate human activities on the Moon itself, and progressing to the use of lunar resources to underpin a future industrial capability within the Earth-Moon system. In this way, gradually increasing access to lunar resources may help ‘bootstrap’ a space-based economy from which the world economy, and possibly also the world’s environment, will ultimately benefit.

scholarly journals Zinc - rooting cofactor in rubber tree mini-cuttings

2020 ◽  
Vol 36 (6) ◽  
Author(s):  
Joelmir Vital da Silva ◽  
Wilson Itamar Maruyama ◽  
Carlos Eduardo Da Silva Oliveira ◽  
Fabio Steiner ◽  
Alan Mário Zuffo ◽  
...  
Keyword(s):  
Survival Rate ◽  
Root Length ◽  
Root Meristem ◽  
Rubber Tree ◽  
Adventitious Rooting ◽  
Leaf Abscission ◽  
Economic Interest ◽  
Rubber Industry ◽  
Primary Roots ◽  
The World

The rubber tree (Hevea brasiliensis Müell. Arg.) is a species of significant economic interest in the natural rubber industry in Brazil and the world. This species presents recalcitrance to rooting, and its cuttings are difficult to propagate. This study aimed to evaluate the effect of the pre-conditioning of rubber tree mini-cuttings with zinc on the improvement of the adventitious rooting of rootstocks. Mini-cuttings were standardized with 45 mm length and submitted to preconditioning by immersion of the mini-cutting base in solutions containing 0.00; 0.04; 0.08; 0.16; 0.32 and 0.64 mg L-1 of Zn, for 24 hours. The experimental design was randomized blocks with six treatments and four replicates of 10 mini-cuttings. The rubber tree mini-cuttings were placed in a fitotron-type growth chamber, at 25 °C, with 12-hour photoperiod, 5,000 K intensity, and 95% of relative air humidity, for 60 days. The survival rate, number of buds, percentage of mini-cuttings that had leaf abscission, the percentage of mini-cuttings with callogenesis in the root meristem, the percentage of rooted mini-cuttings, the number of primary roots and root length were evaluated. The highest values of survival rate, the number of buds, the number of primary roots, the percentage of mini-cuttings with callogenesis in the root meristem, the percentage of rooted mini-cuttings and root length were observed with 0.16 to 0.26 Mg L-1 of Zn. The use of zinc in the mini-cuttings of rubber tree reduces linearly the percentage of mini-cuttings that had leaf abscission and the formation of callogenesis in the root meristem.   The rubber tree (Hevea brasiliensis Müell. Arg.) is a species of a large economic interest in the natural rubber industry in Brazil and the world. This species presents recalcitrance to rooting, and its cuttings are difficult to propagate. This study aimed to evaluate the effect of the pre-conditioning of rubber tree mini-cuttings with zinc on the improvement of the adventitious rooting of rootstocks. Mini-cuttings were standardized with 45 mm length and submitted to preconditioning by immersion of the mini-cutting base in solutions containing 0; 0.04; 0.08; 0.16; 0.32 and 0.64 mg L-1 of Zn, for 24 hours. The experimental design was randomized blocks with six treatments and four replicates of 10 mini-cuttings. The rubber tree mini-cuttings were placed in a fitotron-type growth chamber at 25 °C, with 24-hour photoperiod, 5,000 K intensity and 95% relative humidity for 60 days. The survival rate, number of buds, percentage of mini-cuttings that had leaf abscission, the percentage of mini-cuttings with callus, the percentage of rooted mini-cuttings, the number of primary roots and root length were evaluated. The highest values of survival rate, the number of buds, the number of primary roots, the percentage of mini-cuttings with callus, the percentage of rooted mini-cuttings and root length were verified with 0.16 to 0.26 Mg L-1 of Zn. The use of zinc in the mini-cuttings of rubber tree reduces linearly the percentage of mini-cuttings that had leaf abscission and the formation of root calluses.

scholarly journals Is the low-cost EyeTribe eye tracker any good for research?

2014 ◽  
Author(s):  
Edwin Dalmaijer
Keyword(s):  
Low Cost ◽  
Sampling Rate ◽  
High Accuracy ◽  
Eye Tracker ◽  
The World ◽  
Quality Video ◽  
Low Costs ◽  
Precision And Accuracy ◽  
High Quality Video ◽  
Tracking Technology

Eye-tracking technology is becoming increasingly cheaper, both on the hardware and on the software front. Currently, the EyeTribe tracker is the most inexpensive commercial eye tracker in the world, at a price of $99. The low costs make it a potentially interesting resource for research, but no objective testing of its quality has been performed yet. Here the EyeTribe tracker is compared with an EyeLink 1000, a high-quality video eye tracker. Results indicate that the spatial precision and accuracy are good enough for fixation checking, point-of-regard analyses, and pupilometry. However, the low sampling rate renders the device unsuitable for testing high-accuracy saccade metrics. Additionally, open-source toolboxes for Matlab and Python, and a plug-in for OpenSesame are presented, which can be used to interface with the EyeTribe tracker.

scholarly journals Ukraiński rynek kukurydzy na tle zmian światowych

2018 ◽  
Vol 18(33) (2) ◽  
pp. 33-43 ◽  
Author(s):  
Denys Cherevyk ◽  
Mariusz Hamulczuk
Keyword(s):  
Biofuel Production ◽  
Global Markets ◽  
Maize Production ◽  
The World ◽  
Cereal Production ◽  
Low Costs

Maize belongs to the most important crops and industrial grains in the world and Ukraine is becoming one of the key producers and exporters of maize in the world. The aim of the study was to assess the determinants of maize production changes in Ukraine in the context of internal and global conditions. The work presents changes in production, consumption and prices in Ukraine against their counterparts in the world. In light of the research, it has been shown that there is an increase of integration of the Ukrainian maize market with global markets. This phenomenon was supported by the increase in demand for maize on global markets caused by the development of biofuel production and the relatively low costs of cereal production in Ukraine.

scholarly journals India's pharmaceutical industry: hype or high tech take-off?

2004 ◽  
Vol 28 (2) ◽  
pp. 182 ◽  
Author(s):  
Prabodh Malhotra ◽  
Hans Lofgren
Keyword(s):  
Pharmaceutical Industry ◽  
World Trade Organization ◽  
World Trade ◽  
Large Scale ◽  
Global Markets ◽  
High Tech ◽  
Competitive Strength ◽  
The World ◽  
Low Costs ◽  
Indian Pharmaceutical Industry

India has built a large pharmaceutical industry through an array of measures in support of domestic firms. The absence of product patents enabled Indian companies to become world leading producers of generic versions of patented drugs. Low costs and a strong engineering tradition continue to sustain competitive strength. The implementation of the World Trade Organization patent regime in 2005 is driving a transformation of the industry. Key elements of the present shake-up include the return of ?big pharma? companies on a large scale and the emergence of several Indian firms that aim to become fullyfledged research-based multinationals. This article provides a description of the development and structure of the Indian pharmaceutical industry and explores questions and challenges arising from its integration into global markets.

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