Stratospheric ozone depletion will increase the solar ultraviolet radiations especially in the range UV-A and UVB. Increased levels of UV radiations affect and cause damage on cellular level on various organisms. Current research study was targeted to evaluate the effect of seed pretreatment with ultraviolet radiation on germination, oxidative damage and some antioxidant enzymes of three common wheat (Triticum aestivum L.) cultivars namely; Sakha-94, Gemmiza-9 and Giza-168. Seeds were irradiated to ultraviolet radiation with wavelength from 300-410 nm and maximum wavelengths of 350 nm for 6 different exposure doses (1, 5, 10, 30, 60 and 120 s). Various germination indices, oxidative stress and protective enzymes were estimated and recorded every two weeks till harvest of experiment. Ultraviolet radiation induced increases in germination consequences of wheat cultivars especially seed germination percentage and germination rate. Seed pretreatment with ultraviolet radiations induced a significant decrease on various oxidative stress damage consequences both hydrogen peroxide level and lipid peroxidation, which were monitored biweekly till harvest. Antioxidant enzymes estimated; superoxide dismutase, catalase and ascorbic acid peroxidase showed a huge and significant activation after seed pretreatment with different doses of UV-light. Data provide a new trend in priming using ultraviolet radiations of wavelengths range UV-A and UV-B
{"title":"Effect of UVA+B on Germination Consequences, Oxidative Stress and Antioxidant Defence Mechanisms of Wheat Triticum aestivum L.","authors":"Abdelghafar M. Abu-Elsaoud, H. Hassan","doi":"10.18576/JEHE/040204","DOIUrl":"https://doi.org/10.18576/JEHE/040204","url":null,"abstract":"Stratospheric ozone depletion will increase the solar ultraviolet radiations especially in the range UV-A and UVB. Increased levels of UV radiations affect and cause damage on cellular level on various organisms. Current research study was targeted to evaluate the effect of seed pretreatment with ultraviolet radiation on germination, oxidative damage and some antioxidant enzymes of three common wheat (Triticum aestivum L.) cultivars namely; Sakha-94, Gemmiza-9 and Giza-168. Seeds were irradiated to ultraviolet radiation with wavelength from 300-410 nm and maximum wavelengths of 350 nm for 6 different exposure doses (1, 5, 10, 30, 60 and 120 s). Various germination indices, oxidative stress and protective enzymes were estimated and recorded every two weeks till harvest of experiment. Ultraviolet radiation induced increases in germination consequences of wheat cultivars especially seed germination percentage and germination rate. Seed pretreatment with ultraviolet radiations induced a significant decrease on various oxidative stress damage consequences both hydrogen peroxide level and lipid peroxidation, which were monitored biweekly till harvest. Antioxidant enzymes estimated; superoxide dismutase, catalase and ascorbic acid peroxidase showed a huge and significant activation after seed pretreatment with different doses of UV-light. Data provide a new trend in priming using ultraviolet radiations of wavelengths range UV-A and UV-B","PeriodicalId":106668,"journal":{"name":"Journal of Ecology and Health","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131753951","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Pathway of 1,2,4-Trichlorobenzene Degradation by Bacillus mucilaginosus Isolated from Petroleum Polluted Soils","authors":"M. Abo-State, Y. Saleh, O. Khalil","doi":"10.18576/jehe/040201","DOIUrl":"https://doi.org/10.18576/jehe/040201","url":null,"abstract":"","PeriodicalId":106668,"journal":{"name":"Journal of Ecology and Health","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128649920","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Efficacy of Antibiotic Combinations on Multi-Drug Resistant Bacterial Strains Isolated from Urinary Tract Infection and Hemodialysis Patients","authors":"M. Abo-State, Y. Saleh, S. Fathy","doi":"10.18576/JEHE/040202","DOIUrl":"https://doi.org/10.18576/JEHE/040202","url":null,"abstract":"","PeriodicalId":106668,"journal":{"name":"Journal of Ecology and Health","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128525375","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Salvia Lanigera var. grandiflora Benth: A New Record in the Flora of Egypt","authors":"A. El-Banhawy, W. Kamel, E. G. Eldin","doi":"10.18576/jehe/040205","DOIUrl":"https://doi.org/10.18576/jehe/040205","url":null,"abstract":"","PeriodicalId":106668,"journal":{"name":"Journal of Ecology and Health","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116948504","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. Marrouf, M. El-Otaify, A. S. Mohamed, Galal Ismail, K. Essa
{"title":"Analytical Solution of One Dimension Time Dependent Advection- Diffusion Equation","authors":"A. Marrouf, M. El-Otaify, A. S. Mohamed, Galal Ismail, K. Essa","doi":"10.18576/JEHE/040203","DOIUrl":"https://doi.org/10.18576/JEHE/040203","url":null,"abstract":"","PeriodicalId":106668,"journal":{"name":"Journal of Ecology and Health","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121278009","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Legumes Dominated Steppe Vegetation Type in the Flora of Azerbaijan","authors":"Z. Mammadova, E. Gurbanov, A. Akhundova","doi":"10.18576/JEHE/040206","DOIUrl":"https://doi.org/10.18576/JEHE/040206","url":null,"abstract":"","PeriodicalId":106668,"journal":{"name":"Journal of Ecology and Health","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117117949","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
N. Tabli, E. Nabti, D. Dahel, N. Mokrane, H. Manyani, M. Dary, M. Megias
soils samples were collected from the west region of Bejaia-Algeria in aseptic conditions. The preliminary germination test on tomatos seeds allowed screening of 4 simples from which 40 different colonies were isolated and purified. These last were submitted to in vitro germination test, while 20 strains with an inductor effect on th e germination were selected and tested for the presence of stimulator effect of growth of tomato in vivo. Biochemical (on API 50 CHB/E gallery), and phylogenetic (DNAr 16S sequencing) identification, tests researching characteristics promoting p lant growth (production of IAA (Indol Acetic Acid) phyto- hormone, enzymes, siderophores, free nitrogen fixation, and an an tagonistic test on five phytopathogenic fungi ( Botrytis cinerea; Phytophtora cactorum, phytophtora cinnamomi; Fusarium oxysporum a nd Verticillium dahliae) were applied for the strain showing positive in vivo germination results on tomato.The results of this last test led to select four strains: S11, S6, S15, and S12 that greatly affected tomato growth, with stems length (cm) of 9.212, 9.280, 9.362 and 9.858, respectively, compared to the control (6.400). Biochemical and phylogenic identifications of these strains allowed to affiliate them as following: Arthrobacter agilis(S6), Streptomyces Sp (S11), Bacillus sp13 (S15) and Mycobacterium Sp(S12). The four strains produced several enzymes, high indol acetic acid (phyto- hormone) quantity (mg/l: 38.47 (S11); 86.90 (S6); 93.96 (S12) and 190.23 (S15), siderophores, nitrogen fixing. It also showed an antagonistic activity against the phytopathogenic fungi tested with variable p lant growth inhibition (PGI) %:0-78.51% for Bacillus sp13; 29-74%for Streptomyces sp; 0-72%for Arthrobacter agilis; and 0-69% for Mycobacterium sp. These results prove that the strains are compatible for tomato growth stimulation.
{"title":"Impact of Diazotrophic Bacteria on Germination and Growth of Tomato, with Bio-control Effect, Isolated from Algerian Soil","authors":"N. Tabli, E. Nabti, D. Dahel, N. Mokrane, H. Manyani, M. Dary, M. Megias","doi":"10.12785/JEHE/020101","DOIUrl":"https://doi.org/10.12785/JEHE/020101","url":null,"abstract":"soils samples were collected from the west region of Bejaia-Algeria in aseptic conditions. The preliminary germination test on tomatos seeds allowed screening of 4 simples from which 40 different colonies were isolated and purified. These last were submitted to in vitro germination test, while 20 strains with an inductor effect on th e germination were selected and tested for the presence of stimulator effect of growth of tomato in vivo. Biochemical (on API 50 CHB/E gallery), and phylogenetic (DNAr 16S sequencing) identification, tests researching characteristics promoting p lant growth (production of IAA (Indol Acetic Acid) phyto- hormone, enzymes, siderophores, free nitrogen fixation, and an an tagonistic test on five phytopathogenic fungi ( Botrytis cinerea; Phytophtora cactorum, phytophtora cinnamomi; Fusarium oxysporum a nd Verticillium dahliae) were applied for the strain showing positive in vivo germination results on tomato.The results of this last test led to select four strains: S11, S6, S15, and S12 that greatly affected tomato growth, with stems length (cm) of 9.212, 9.280, 9.362 and 9.858, respectively, compared to the control (6.400). Biochemical and phylogenic identifications of these strains allowed to affiliate them as following: Arthrobacter agilis(S6), Streptomyces Sp (S11), Bacillus sp13 (S15) and Mycobacterium Sp(S12). The four strains produced several enzymes, high indol acetic acid (phyto- hormone) quantity (mg/l: 38.47 (S11); 86.90 (S6); 93.96 (S12) and 190.23 (S15), siderophores, nitrogen fixing. It also showed an antagonistic activity against the phytopathogenic fungi tested with variable p lant growth inhibition (PGI) %:0-78.51% for Bacillus sp13; 29-74%for Streptomyces sp; 0-72%for Arthrobacter agilis; and 0-69% for Mycobacterium sp. These results prove that the strains are compatible for tomato growth stimulation.","PeriodicalId":106668,"journal":{"name":"Journal of Ecology and Health","volume":"85 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132498017","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Cortical Dynamics as a Therapeutic Mechanism for Touch Healing","authors":"Morteza Alibakhshi Kenari","doi":"10.12785/JEHE/020103","DOIUrl":"https://doi.org/10.12785/JEHE/020103","url":null,"abstract":"","PeriodicalId":106668,"journal":{"name":"Journal of Ecology and Health","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128189944","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Renewable Energies Environmental Impacts: Wind Energy Case","authors":"Haddad Louiza, A. Zéroual","doi":"10.12785/JEHE/020102","DOIUrl":"https://doi.org/10.12785/JEHE/020102","url":null,"abstract":"","PeriodicalId":106668,"journal":{"name":"Journal of Ecology and Health","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128575936","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
S. M. Shuaiby, Mohsen A. Hassan, A. Sharkawy, A. M. Gad
Biosimulation models of the heart action potential have become a very useful tool. It provides better understanding for the complex biophysical phenomena related to electrical activity in the heart s uch as cardiac arrhythmias. At cellular level, the electrical activity of cardiac tissues may be simulated by solving a system of ordinary deferential equations (ODEs) describing the electrical behavior of the cell membrane. Because the biophysical processes underlying this phenomenon are non-linear and change very rapidly, the ODE system is a challenge to be solved numerically. Furthermore, the implementation of these models is a hard task for commercial finite element software. In this paper a finite element formulation, model a nd code generation of monodomain equation has been conducted. The developed code is coupled with the modified FitzHugh-Nag umo (FHN) cell electrophysiological model in order to have isotropic excitation propagation starting from cell level to complete hea rt level. MTALAB programming language was used to build the proposed standalone finite element code. A two dimensional spec imen of heart tissues is simulated to show the behavior of the excitation propagation and the repolarization phase for isotropic electric al activity. Simulation results of the cardiac action potential have shown good agreements with the experimental measurements obtained from published literature.
{"title":"A finite Element Model for the Electrical Activity in Human Cardiac Tissues","authors":"S. M. Shuaiby, Mohsen A. Hassan, A. Sharkawy, A. M. Gad","doi":"10.12785/JEHE/010104","DOIUrl":"https://doi.org/10.12785/JEHE/010104","url":null,"abstract":"Biosimulation models of the heart action potential have become a very useful tool. It provides better understanding for the complex biophysical phenomena related to electrical activity in the heart s uch as cardiac arrhythmias. At cellular level, the electrical activity of cardiac tissues may be simulated by solving a system of ordinary deferential equations (ODEs) describing the electrical behavior of the cell membrane. Because the biophysical processes underlying this phenomenon are non-linear and change very rapidly, the ODE system is a challenge to be solved numerically. Furthermore, the implementation of these models is a hard task for commercial finite element software. In this paper a finite element formulation, model a nd code generation of monodomain equation has been conducted. The developed code is coupled with the modified FitzHugh-Nag umo (FHN) cell electrophysiological model in order to have isotropic excitation propagation starting from cell level to complete hea rt level. MTALAB programming language was used to build the proposed standalone finite element code. A two dimensional spec imen of heart tissues is simulated to show the behavior of the excitation propagation and the repolarization phase for isotropic electric al activity. Simulation results of the cardiac action potential have shown good agreements with the experimental measurements obtained from published literature.","PeriodicalId":106668,"journal":{"name":"Journal of Ecology and Health","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121256739","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：