scholarly journals Oxidative Stress and Antioxidant Parameters in Earthworm (Esiena fetida andrei); a Probable index of Environmental Pollution Status

2020 ◽  
Vol 24 (8) ◽  
pp. 1375-1382
Author(s):  
S.O. Asagba ◽  
P.C. Ichipi-Ifukor ◽  
C. Okwudibie

Oxidative stress and antioxidant responses in earthworms were investigated for use as an index for environmental pollution. The study was done in  three test locations (Refinery road, Okere market and PTI roundabout) in Warri an industrial city in Nigeria and Abraka a less industrial city as  control. Levels of five stress and antioxidant parameters; lipid peroxidation (LPO), aldehyde oxidase (AO), superoxide dismutase (SOD) catalase (CAT) and ascorbic acid (Vit. C.) were used. There was observed significant (p<0.05) rise in LPO (5.83±0.456, 5.83±0.456, 4.04±0.58, 4.25±0.475, 2.09±0.425), oxidative enzyme (AO) levels (0.011±0.00012, 0.008±0.0021, 0.0058±0.0013, 0.0022±0.00009) and increase in activities and levels of the antioxidants (SOD: 24.0±3.80, 12.0±3.80, 16.0±4.62, 5.6±2.8; CAT: 0.98±0.013, 1.08±0.061, 0.95±0.018, 0.93±0.0125 and Vit. C: 0.175±0.0172, 0.118±0.0148, 0.109±0.014, 0.072±0.004) respectively in all study locations in Warri compared to Abraka. These changes were significantly higher in refinery road compared to other locations (Okere market and PTI) in Warri. There were also significant (p<0.05) negative relationship between LPO and SOD activities (r=-0.677), AO and CAT(r=-0.718) as well as AO and SOD(r=0.661) activities respectively only in the refinery road area while no significant change (p>0.05) were reported in other locations. The combined data showed significant negative relationship (p<0.01) between LPO and AO(r=-0.719) and a significant positive relationship (p<0.01) between LPO and (SOD r=0.710, Vit C r=.884). It further showed significant (p<0.01) negative relationship between AO and CAT (r=-0.486), SOD and Vit C (r=-.648), and significant (p<0.01) positive relationship between Vitamin C and (SOD r=-0.865, CAT r=0.785). It was concluded that rise in levels of the studied antioxidants and LPO in earthworms found in Warri compared to Abraka may have occurred in response to industrial pollution, thus may be used for environmental monitoring. Keywords: Environment, Pollution, Oxidative Stress, Antioxidants and Earthworm

2016 ◽  
Vol 44 (3) ◽  
pp. 509-517 ◽  
Author(s):  
Yanhan Zhu

The 2 types of exchange relationship perceptions—social exchange relationship perceptions (SERPs) and economic exchange relationship perceptions (EERPs)—constitute the primary concept for understanding individual behavior in the workplace. Using a sample of 581 employees from Mainland China, I explored the effects of SERPs and EERPs on employee extrarole behavior (ERB), as well as the moderating effect of organization-based self-esteem (OBSE) on the relationships between SERPs and ERB, and between EERPs and ERB. The results revealed a significant positive relationship between SERPs and ERB, a significant negative relationship between EERPs and ERB, and a significant moderating effect for OBSE. Theoretical and practical implications of these findings are discussed.


2020 ◽  
Vol 9 (1) ◽  
pp. 56-74
Author(s):  
Kedar Raj Gautam

Analysis of financial performance to detect financial health of finance companies, development banks and commercial banks as a whole is a less explored research in Nepalese context. This paper, therefore, attempts to examine the financial performance and factors influencing financial performance of Nepalese financial depositary institutions in the framework of CAMEL. This study is based on descriptive cum casual research design. This study is based on secondary data which was extracted from various publications published by Nepal Rastra Bank such as banking and financial statistics, financial stability report and bank supervision report. All commercial banks, development banks, and finance companies are taken as population of the study. The study deals with financial performance analysis of entire population covering five years from 2014/15 to 2018/19. The variables such as capital adequacy, assets quality, management efficiency, earnings and liquidity are used to analyze financial performance. Descriptive as well as pooled regression analysis was used to assess the relationship among the variables. Descriptive analysis shows that financial institutions in each category meet NRB standard regarding capital adequacy. On the basis of capital adequacy and earnings, finance companies stand at first, on the basis of assets quality, development banks stand at first and on the basis of management efficiency, commercial banks stand at first. Finance companies store high liquidity as compared to other class financial institutions. The regression analysis shows that return on assets, ROA has significant positive relationship with capital adequacy and ROE but ROA has significant negative relationship with assets quality. However, return on equity, ROE has significant positive relationship with assets quality and ROA but ROE has significant negative relationship with capital adequacy. Capital adequacy and assets quality play major role to maximize ROA and ROE of financial institutions.


1985 ◽  
Vol 117 (2) ◽  
pp. 233-239 ◽  
Author(s):  
D.B. Donald

AbstractFunctional wing length (wing length/head-capsule width) of female Sweltsa revelstoka (Jewett) from streams was measured for 19 sites that have been free of Wisconsin glacial ice for about 15 000 years and possibly longer, and from 23 sites that have been ice free for about 10 000 years. At the former sites brachypterous populations were common and there was a significant negative relationship between functional wing length and elevation, and a positive relationship between functional wing length and stream size. In the area that deglaciated more recently, populations were not or only slightly brachypterous and there was no significant relationship between wing length and elevation or between wing length and stream size. Functional wing length was not related to body size. These analyses indicate that the brachypterous condition is probably genotypic in origin. I suggest that streams were colonized by macropterous forms shortly after deglaciation, and that brachyptery takes several millennia to develop at small, high-elevation streams.


2018 ◽  
Vol 5 (1) ◽  
pp. 19-25
Author(s):  
Md Shiduzzaman ◽  
Humyra Akhter ◽  
Mohammad Bashir Ahmed ◽  
Md Matiul Islam

Vermicompost is very useful manure which is becoming popular day by day. However, its perception by the farmers is not yet assessed in the southwestern region of Bangladesh. The main objectives of this study were to determine the farmers’ perception of beneficial effects and limitations of vermicompost and to explore the relationship between selected characteristics of the farmers’ and their perception of beneficial effects and limitations of vermicompost. Data were collected using an interview schedule from randomly selected 60 respondents. Locale was three villages namely Lokhpur, Bollokhpur and Vobna under Fakirhat upazila of Bagerhat district. Faceto- face interview was conducted during 7 to 29 May, 2016. Farmers’ perception regarding the beneficial effects and limitations of vermicompost was measured using 5- point Likert type scale. Data were analyzed using SPSS software and farmers’ perception index was calculated. Majority (66.7 percent) of the respondents had moderate perception while 18.3 percent and 15 percent of them had less and high perception, respectively, on the beneficial effects and limitations of vermicompost. Among seven selected characteristics of the respondents, age showed a significant negative relationship with their perception of beneficial effects and limitations of vermicompost while training experience of the respondents showed a significant positive relationship with their overall perception. Thus, arrangement of training could pave the way of high perception of beneficial effects and limitations of vermicompost.Res. Agric., Livest. Fish.5(1): 19-25, April 2018


1993 ◽  
Vol 71 (12) ◽  
pp. 2448-2461 ◽  
Author(s):  
John B. Iverson ◽  
Christine P. Balgooyen ◽  
Kathy K. Byrd ◽  
Kelly K. Lyddan

Reproductive and body size data from 169 populations of 146 species (56% of those recognized), 65 genera (75%), and 11 families (92%) of turtles were tabulated to test for latitudinal variation in egg and clutch size. Body-size-adjusted correlation analysis of all populations (as well as within most families) revealed (i) a significant negative relationship (r2 = 0.26) between latitude and egg size, (ii) a significant positive relationship (r2 = 0.21) between latitude and clutch size, and (iii) no relationship between latitude and clutch mass. Phylogenetic contrast analyses corroborated these patterns. Clutch size was also negatively correlated with egg size across all populations as well as within most families. We evaluate the applicability to turtles of hypotheses postulated to explain such latitudinal patterns for other vertebrate groups. The observed pattern may be the result of latitudinal variation in selection on egg size and (or) clutch size, as well as on the optimal trade-off between these two traits.


2005 ◽  
Vol 30 (2) ◽  
pp. 166-180
Author(s):  
Vance F. Mitchell ◽  
Vishwanath Baba ◽  
Timothy Epps

The present study investigates the relationship between job involvement (JI) and central life interest (CLI) for a sample of automobile workers chosen from three organizational levels containing unskilled employees, skilled workmen and fore-men. Possible associations of job involvement and work as the«  Central Life Interest » with job levels in the occupational hierarchy, age of the individuals and the length of employment were also explored. The results disconfirmed the hypothesized positive relationship between JI and CLI. In fact a low but significant negative relationship was obtained between JI and CLI. Job levels, age and length of employment were found to hâve negligible influence on both JI and CLI. On the basis of the obtained results, directions for future research are indicated.


2018 ◽  
Vol 5 (1) ◽  
pp. 11-18
Author(s):  
Mohammad Zamshed Alam ◽  
Md Shariful Islam ◽  
Muhammad Humayun Kabir

The major purposes of the study were to determine the extent of the problem faced by the farmers in bean cultivation and to explore the relationships between bean farmers’ selected characteristics with their problem faced. The study was conducted in four villages of two unions under Atghoria upazilla of Pabna District. Data were collected from a random sample of 106 bean farmers by using an interview schedule during 15 Dec, 2017 to 15 Jan, 2018. The highest proportion (71.70 percent) of the farmers faced medium overall problem in bean production, while 16.04 percent faced high and 12.26 percent faced low problem. Problem faced in non-availability of pesticides ranked 1st and this was followed by non-availability of fertilizers, lack of capital so on and least one lack of irrigation in bean cultivation ranked 28th. Correlation analysis indicated that education, training exposure, organizational participation, extension media contact and farmers’ knowledge had significant negative relationship with their problem faced. Age had significant positive relationship with their problem faced while family members, farm size, annual family income, bean cultivation area, and credit received by the farmers had no significant relationship with their problem faced. Overwhelming (87.74) majority of bean farmers faced medium to high problems therefore, it may be said that problem faced by the farmers in bean cultivation is a serious issue to be addressed to maximize bean production.Res. Agric., Livest. Fish.5(1): 11-18, April 2018


2018 ◽  
Vol III (IV) ◽  
pp. 389-399
Author(s):  
Nazim Ali ◽  
Zahid Ali ◽  
Adnan Khan

The basic objective of this study is to examine the mediating role of OC between WO and TI among the teaching faculty of universities of KP, Pakistan. Data were collected via questionnaires from 207 teachers. SPSS and Amos were used to analyze the data. The results revealed a significant positive relationship between WO and turnover intention, while a significant negative relationship between WO and OC and between OC and TI was confirmed. The results also revealed a significant partial mediation of OC between WO and turnover intention.


Author(s):  
Md Arif Hosen ◽  
Sujan Chandra Paul ◽  
Md Harun Or Rosid

This study investigates the impact of democracy indices on the literacy rate. Panel Data of 134 Countries from 2007-2018 were collected from the website the World Bank and Gapminder. This study uses Ordinary Least Square (OLS), Pooled Ordinary Least Square (POLS), Driscoll-Kraay (DK), Second Stage Least Square (2SLS), Generalized Methods of Moments (GMM) methods. This research has found that political participation index and political culture index has a significant positive relationship with literacy rate in all the method. The functioning of the government index has a significant positive relationship and electoral process and the pluralism index has a significant negative relationship with literacy rate in all the methods except the GMM method. The civil liberties index has a significant negative relationship with literacy rate in POLS and in the other models, there is no significant relationship between the civil liberties index and literacy rate.


2012 ◽  
Vol 9 (2) ◽  
pp. 179-185 ◽  
Author(s):  
NC Basak ◽  
JC Pandit

The study was conducted to determine the attitude of farmers towards the use of urea super granule (USG) in rice cultivation and explore relationship between the selected characteristics of the farmers. Data were collected through personal interview from 84 randomly selected USG users in rice cultivation of the three villages under Sadar Upazila of Netrakona district during October to December 2008. A five point Likert scale was used to determine the attitude of farmers. The majority (73.81%) of the farmers had moderately favourable, 21.43% slightly favourable and 4.76% highly favourable attitude towards use of USG in rice cultivation. Level of education, farm size, annual income, farming information, agricultural training exposure and rice farming knowledge of the farmers’ had significant positive relationship but family subsistence pressure had significant negative relationship with their attitude towards the use of USG.   DOI: http://dx.doi.org/10.3329/jbau.v9i2.10983 J. Bangladesh Agril. Univ. 9(2): 179–185, 2011


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