Transient responses of yeast continuous cultures to qualitative changes in the nutrient supply. Induction and repression of the galactose pathway enzymes

The paper analyzes the qualitative changes in monetary policy goals and instruments during the world economic crisis of 2007-2009 in industrial countries and Russia; it represents the authors view on Russian monetary policy goals and results on different stages of crisis development. On the basis of the analysis the authors conclude on the necessity of active exchange rate policy in Russia, while developing interest rate instruments, and implementation of some exchange restrictions to prevent crisis contagion in the future.

Download Full-text

Influence of increased nutrient supply on Microcystis aeruginosa at cellular and proteomic levels

Aquatic Microbial Ecology ◽

10.3354/ame01939 ◽

2020 ◽

Vol 85 ◽

pp. 47-58

Author(s):

Y Jiang ◽

Y Liu

Keyword(s):

Microcystis Aeruginosa ◽

Regulatory Protein ◽

Acid Synthesis ◽

Nutrient Supply ◽

Nitrogen Supply ◽

Nitrogen And Phosphorus ◽

Comprehensive Description ◽

Amino Acid Synthesis ◽

High Nutrient ◽

Proteomic Responses

Various studies have observed that increased nutrient supply promotes the growth of bloom-forming cyanobacteria, but only a limited number of studies have investigated the influence of increased nutrient supply on bloom-forming cyanobacteria at the proteomic level. We investigated the cellular and proteomic responses of Microcystis aeruginosa to elevated nitrogen and phosphorus supply. Increased supply of both nutrients significantly promoted the growth of M. aeruginosa and the synthesis of chlorophyll a, protein, and microcystins. The release of microcystins and the synthesis of polysaccharides negatively correlated with the growth of M. aeruginosa under high nutrient levels. Overexpressed proteins related to photosynthesis, and amino acid synthesis, were responsible for the stimulatory effects of increased nutrient supply in M. aeruginosa. Increased nitrogen supply directly promoted cyanobacterial growth by inducing the overexpression of the cell division regulatory protein FtsZ. NtcA, that regulates gene transcription related to both nitrogen assimilation and microcystin synthesis, was overexpressed under the high nitrogen condition, which consequently induced overexpression of 2 microcystin synthetases (McyC and McyF) and promoted microcystin synthesis. Elevated nitrogen supply induced the overexpression of proteins involved in gas vesicle organization (GvpC and GvpW), which may increase the buoyancy of M. aeruginosa. Increased phosphorus level indirectly affected growth and the synthesis of cellular substances in M. aeruginosa through the mediation of differentially expressed proteins related to carbon and phosphorus metabolism. This study provides a comprehensive description of changes in the proteome of M. aeruginosa in response to an increased supply of 2 key nutrients.

Download Full-text

Examining the effect of the nutrient supply and tillage on the yield of maize (Zea mays L) and economic questions of cultivation on the loess-plato of Hajdúság

Cereal Research Communications ◽

10.1556/crc.34.2006.1.74 ◽

2006 ◽

Vol 34 (1) ◽

pp. 295-298

Author(s):

Dénes Sulyok ◽

Tamás Rátonyi ◽

László Huzsvai

Keyword(s):

Zea Mays ◽

Zea Mays L ◽

Nutrient Supply

Download Full-text

Effect of water and nutrient supply on the yield of pea varieties

Cereal Research Communications ◽

10.1556/crc.34.2006.1.142 ◽

2006 ◽

Vol 34 (1) ◽

pp. 569-572

Author(s):

M. Lesznyák ◽

Borbély Hunyadi

Keyword(s):

Nutrient Supply ◽

Effect Of Water

Download Full-text

Russia in the World Production and Market of Potatoes and Fruit and Vegetable Products

Economy of agricultural and processing enterprises ◽

10.31442/0235-2494-2020-0-9-74-83 ◽

2020 ◽

pp. 74-83

Author(s):

Yu.I. Agirbov ◽

◽

R.R. Mukhametzyanov ◽

E.V. Britik ◽

◽

...

Keyword(s):

Fruits And Vegetables ◽

World Market ◽

Climatic Conditions ◽

Global Rating ◽

Vegetable Production ◽

World Production ◽

Fruit And Vegetable ◽

Vegetable Products ◽

The World ◽

Qualitative Changes

In 1961-2018 in the world as a whole, the gross harvest of potatoes increased from 290.6 million tons to 368.2 million tons, that is, 1.36 times. Over the same period, the production of vegetables and food melons increased from 197.7 million tons to 1,088.8 million tons (5.51 times), and fruits and berries from 199.9 million tons to 867.8 million tons (4.34 times). In a number of states in 1992-2018 the corresponding increase significantly exceeded the average values for the world as a whole, as a result of which their place in the global ranking increased, and the positions of some traditional producers of potatoes and fruits and vegetables decreased. For example, in terms of gross harvest of potatoes in 1992, Russia was in first place, and Poland was in third, while in 2018 they were in 4th and 9th positions, respectively. In terms of vegetable production, Italy and Japan were displaced from 4th and 5th places, which were taken by Turkey and Nigeria. In terms of gross harvests of fruits and berries, Turkey occupied the fifth position in total world production by 2018, although in 1992 it belonged to Italy. Quantitative and qualitative changes inevitably have a significant impact on both the volume of the world market and the parameters of international trade in potatoes, vegetables and melons, fruits and berries. Processes in foreign economic liberalization and economic integration contributed to an increase in the specialization and concentration of production of relevant plants in countries with more favorable natural and climatic conditions, as well as a gradual increase in demand for potatoes, vegetables and melons, fruits and berries from a number of states, including those that used to meet the needs of their population in large volumes at the expense of their own producers. The Russian Federation is one of the significant players in the world potato and fruit and vegetable market. Despite the increase in gross fruit and vegetable production in recent years, Russia’s positions in the global rating dropped from 7th to 10th place in vegetables and melons, from 20th to 31st place in fruits and berries. As for potatoes, there was a decrease in the volume of its production, as a result, Russia dropped from 1st place in 1992 to 4th place in 2018.

Download Full-text

Faculty Opinions recommendation of Continuous cultures of fused cells secreting antibody of predefined specificity.

Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature ◽

10.3410/f.12104956.13253055 ◽

2011 ◽

Author(s):

Patrick C Wilson

Keyword(s):

Continuous Cultures

Download Full-text

QUALITATIVE CHANGES IN RHYTHMIC GYMNASTICS HOOP THROWS FROM THE PERSPECTIVE OF BIOMECHANICAL ANALYSIS

SPORT AND SOCIETY ◽

10.36836/2020/1/10 ◽

2020 ◽

pp. 1-8

Author(s):

Raluca Tanasa

Keyword(s):

Correlation Coefficient ◽

Video Recording ◽

Biomechanical Analysis ◽

Fundamental Groups ◽

Horizontal Distance ◽

Video Recordings ◽

Rhythmic Gymnastics ◽

Female Gymnasts ◽

Execution Technique ◽

Qualitative Changes

Throws and catches in rhythmic gymnastics represent one of the fundamental groups of apparatus actuation. They represent for the hoop actions of great showmanship, but also elements of risk. The purpose of this paper is to improve the throw execution technique through biomechanical analysis in order to increase the performance of female gymnasts in competitions. The subjects of this study were 8 gymnasts aged 9-10 years old, practiced performance Rhythmic Gymnastics. The experiment consisted in video recording and the biomechanical analysis of the element “Hoop throw, step jump and catch”. After processing the video recordings using the Simi Motion software, we have calculated and obtained values concerning: launch height, horizontal distance and throwing angle between the arm and the horizontal. Pursuant to the data obtained, we have designed a series of means to improve the execution technique for the elements comprised within the research and we have implemented them in the training process. Regarding the interpretation of the results, it may be highlighted as follows: height and horizontal distance in this element have values of the correlation coefficient of 0.438 and 0.323, thus a mean significance of 0.005. The values of the arm/horizontal angle have improved for all the gymnasts, the correlation coefficient being 0.931, with a significance of 0.01. As a general conclusion, after the results obtained, it may be stated that the means introduced in the experiment have proven their efficacy, which has led to the optimisation of the execution technique, thus confirming the research hypothesis.

Download Full-text

Physiochemical Analysis of Sandalwood (Santalum Album) Leaf Litters Degraded by Eisenia foetida and Eudrilus eugenia

International Annals of Science ◽

10.21467/ias.7.1.6-11 ◽

2019 ◽

Vol 7 (1) ◽

pp. 6-11

Author(s):

Praveesh Bhati ◽

Ritu Nagar ◽

Anurag Titov

Keyword(s):

Leaf Litter ◽

Initial Phase ◽

Nutrient Supply ◽

Ecological Sustainability ◽

Cattle Dung ◽

Agricultural System ◽

Eisenia Foetida ◽

Santalum Album ◽

Eudrilus Eugenia ◽

Set Up

The decay of leaf litter by microflora and fauna furnish nutrient supply to the soil and also uphold ecological sustainability. Applying of proper technique and exploring of result provides information for the betterment of agricultural system. Vermicomposting of Sandalwood (Santalum album) leaf litters were studied with an emphasis of physio-chemical deviation during the process and also compared with 100 % cattle dung. Obtained result explore that temperate of 50 % leaf litter (LL) and 100 % cattle dung (CD) was slightly elevated (37ºC ±1 ºC and 35ºC ±1 ºC respectively) at beginning phase and later came down to ambient level (20ºC±1 ºC). The total organic carbon (TOC) exhausted 44 % in 50 % LL Vermicomposting mixture while 70 % in 100 % CD during the process. At the final stage, TOC found more in 50% LL as compared to 100% CD. Nitrogen content was found 1.02±0.1 in 50 % LL and 0.88±0.1 in 100 % CD at the initial phase but after completion of Vermicomposting, their level was increased up to 40 to 44 %. pH was also measured during vermicomposting and found 7.2±0.1 in 50% LL while 8.4±0.1 in 100% CD at the initial phase. The at the end of process pH raised and set up to 8.2 ±0.1 in 50% LL while in 100% CD it was found 8.0 ±0.1.

Download Full-text