Search results for " zero"
showing 10 items of 1421 documents
Permutations of zero-sumsets in a finite vector space
2020
Abstract In this paper, we consider a finite-dimensional vector space đ« {{\mathcal{P}}} over the Galois field GF ⥠( p ) {\operatorname{GF}(p)} , with p being an odd prime, and the family ⏠k x {{\mathcal{B}}_{k}^{x}} of all k-sets of elements of đ« {\mathcal{P}} summing up to a given element x. The main result of the paper is the characterization, for x = 0 {x=0} , of the permutations of đ« {\mathcal{P}} inducing permutations of ⏠k 0 {{\mathcal{B}}_{k}^{0}} as the invertible linear mappings of the vector space đ« {\mathcal{P}} if p does not divide k, and as the invertible affinities of the affine space đ« {\mathcal{P}} if p divides k. The same question is answered also in the case where âŠ
Induction of body weight loss through RNAi-knockdown of APOBEC1 gene expression in transgenic rabbits
2014
In the search of new strategies to fight against obesity, we targeted a gene pathway involved in energy uptake. We have thus investigated the APOB mRNA editing protein (APOBEC1) gene pathway that is involved in fat absorption in the intestine. The APOB gene encodes two proteins, APOB100 and APOB48, via the editing of a single nucleotide in the APOB mRNA by the APOBEC1 enzyme. The APOB48 protein is mandatory for the synthesis of chylomicrons by intestinal cells to transport dietary lipids and cholesterol. We produced transgenic rabbits expressing permanently and ubiquitously a small hairpin RNA targeting the rabbit APOBEC1 mRNA. These rabbits exhibited a moderately but significantly reduced âŠ
Subjective stress, objective heart rate variability-based stress, and recovery on workdays among overweight and psychologically distressed individualâŠ
2015
Background: The present study aimed to investigate how subjective self-reported stress is associated with objective heart rate variability (HRV)-based stress and recovery on workdays. Another aim was to investigate how physical activity (PA), body composition, and age are associated with subjective stress, objective stress, and recovery. Methods: Working-age participants (n = 221; 185 women, 36 men) in this cross-sectional study were overweight (body mass index, 25.3-40.1 kg/m(2)) and psychologically distressed (>= 3/12 points on the General Health Questionnaire). Objective stress and recovery were based on HRV recordings over 1-3 workdays. Subjective stress was assessed by the Perceived StâŠ
Assessment of Physical and Chemical Stability of Different Magnesium Compounds in Tablets
2020
Modern lifestyle, excessive chemicalization of agricultural products, excessive processing and refining of food, cause a decrease in daily intake of magnesium, cation with an extremely important role in prevention and treatment of many diseases. As a result, there arises the need for extra magnesium intake in the form of dietary supplements. In this study were evaluated the physical and chemical stability of magnesium-containing tablets, depending on the active compound and the excipients used. Magnesium tablets in the form of orotate, lactate, citrate, oxide and hydroxide were taken into study and physical and chemical stability were observed over the validity period, at 6 and at 12 monthâŠ
Targeted Drug Delivery in Plants: EnzymeâResponsive Lignin Nanocarriers for the Curative Treatment of the Worldwide Grapevine Trunk Disease Esca
2019
Abstract Nanocarrier (NC)âmediated drug delivery is widely researched in medicine but to date has not been used in agriculture. The first curative NCâbased treatment of the worldwide occurring grapevine trunk disease Esca, with more than 2 billion infected plants causing a loss yearly of $1.5 billion, is presented. To date, only repetitive spraying of fungicides is used to reduce chances of infection. This longâterm treatment against Esca uses minimal amounts of fungicide encapsulated in biobased and biodegradable lignin NCs. A single trunk injection of <10 mg fungicide results in curing of an infected plant. Only upon Esca infection, ligninolytic enzymes, secreted by the Escaâassociated fuâŠ
Some remarks on Hilbert's (Weak) Nullstellensatz
2011
Certain remarks are provided related to weak nullstellensatz exploiting some problems proposed in Fultonâs book entitled âAn Introduction to Algebraic Geometryâ and elementary notions of Functional Analysis.
ZwiÄ zek indukowanych emocji z ruminacjami i orientacjÄ pozytywnÄ
2018
The article, based on the theory of Barbara Fredrickson (1998), shows the connection of positive emotions (satisfaction,joy) and negative emotions (sadness, disgust) with positive orientation, the belief that life is a zero-sum game and emerging ruminations. Emotions were induced by means of multimedia induction, one for each of the emotions. Dependent variables were measured using the âPositive Orientationâ questionnaires by Ćaguna, OleĆ i Filipiuk (2011), âScale of Belief in a Zero-sum Gameâ by RĂłĆŒycka and Wojciszke (2010) and âRuminations Questionnaireâ BaryĆy and Wojciszke (2005). 120 students took part in the study (59 men and 61 women at the age of M=22.4). The results show that the sâŠ
Genome degeneration and adaptation in a nascent stage of symbiosis
2014
Symbiotic associations between animals and microbes are ubiquitous in nature, with an estimated 15% of all insect species harboring intracellular bacterial symbionts. Most bacterial symbionts share many genomic features including small genomes, nucleotide composition bias, high coding density, and a paucity of mobile DNA, consistent with long-term host association. In this study, we focus on the early stages of genome degeneration in a recently derived insect-bacterial mutualistic intracellular association. We present the complete genome sequence and annotation of Sitophilus oryzae primary endosymbiont (SOPE). We also present the finished genome sequence and annotation of strain HS, a closeâŠ
Current Social and Rangeland Access Trends among Pastoralists in the Western Algerian Steppe
2021
International audience; In the western Algerian steppe, the public authorities have carried out actions aimed at rural development (agricultural development programs) and combating desertification (grazing reserves) to counter the significant and rapid loss of vegetation cover of pastures by overgrazing, and the consequent impacts on local livelihoods. In the Rogassa area, these actions have impacted land tenure and the ancestral and collective way of land use and access. These changes have caused transformations in lifestyle and pasture management. This research aims to characterize how such changes are affecting local pastoralists and what their perceptions are about them. A selective samâŠ
Enterobacter cloacae administration induces hepatic damage and subcutaneous fat accumulation in high-fat diet fed mice.
2018
Accumulating evidence indicates that gut microbiota plays a significant role in obesity, insulin resistance and associated liver disorders. Family Enterobacteriaceae and especially Enterobacter cloacae strain B29 have been previously linked to obesity and hepatic damage. The underlying mechanisms, however, remain unclear. Therefore, we comprehensively examined the effects of E. cloacae subsp. cloacae (ATCCÂź 13047âą) administration on host metabolism of mice fed with high-fat diet (HFD). C57BL/6N mice were randomly divided into HFD control, chow control, and E. cloacae treatment groups. The E. cloacae treatment group received live bacterial cells in PBS intragastrically twice a week, every otâŠ