Research Article
The Immunomodulatory Effect of Intraperitoneal Injection of Licorice Extract on Giant Salamander
Wenbo Wang*,
Pin Liu,
Yue Ning,
Yalong Feng,
Lingling Dou,
Ping Wang,
Ruimin Xi,
Minfei Yan
Issue:
Volume 5, Issue 4, December 2024
Pages:
130-135
Received:
4 October 2024
Accepted:
18 October 2024
Published:
12 November 2024
DOI:
10.11648/j.sf.20240504.11
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Abstract: The effect of licorice extract on non-specific immune function of giant salamanders was studied by intraperitoneal injection. The results showed that the lysozyme activity in the drug group increased, and the lysozyme activity increased with the increase of dose. From the 7th day onwards, each sampling of the drug group showed significant differences compared to the control group (P<0.05). The phagocytic activity of macrophages in the drug group showed some fluctuations, but there was no significant difference compared to the control group. The white blood cell volume value of the high-dose group gradually increased in the first three samplings, and showed a significant difference compared to the control group at 14 days (P<0.05). It decreased slightly in the last two samplings, but was still higher than the control group at the same time. The spleen organ coefficient of the low-dose group was (0.7 ± 0.01) % at 28 days, higher than that of the control group (0.4 ± 0.05) %, and the high-dose group was (0.7 ± 0.07) % at 14 days, higher than that of the control group (0.4 ± 0.02) %. Both differences were significant (P<0.05). After the last sampling (28 days), artificial infection with Aeromonas hydrophila bacteria resulted in a mortality rate of 80% in the control group, 50% in the low-dose group, and 30% in the high-dose group, all lower than the control group. The drug group also had higher immune protection rates than the control group. The results indicate that intraperitoneal injection of licorice extract can improve the immune function and disease resistance of giant salamanders to a certain extent.
Abstract: The effect of licorice extract on non-specific immune function of giant salamanders was studied by intraperitoneal injection. The results showed that the lysozyme activity in the drug group increased, and the lysozyme activity increased with the increase of dose. From the 7th day onwards, each sampling of the drug group showed significant differenc...
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Research Article
The Correlation Between Organizational Characteristics and Performance of African Ports: The Moderating Effect of Governance Reforms
Joseph Ouma Atonga
,
Zachary Bolo Awino,
Kennedy Omondi Ogollah,
Stephen Ochieng Odock
Issue:
Volume 5, Issue 4, December 2024
Pages:
136-150
Received:
7 August 2024
Accepted:
2 September 2024
Published:
16 December 2024
DOI:
10.11648/j.sf.20240504.12
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Abstract: The main objective of this study was to determine the moderating effect of governance reforms on the relationship between organizational characteristics and organizational performance. Structured questions in the form of questionnaires were employed to collect primary data targeting executive managers of 54 container-handling seaport terminals in Anglophone Africa who are conversant with port operations and management. Some data was also obtained from the websites of the ports and regional port management Associations. The response rate was 83.6%. Out of these responses, 46 terminals (78%) were found to have adopted the landlord model while 10 terminals (22%) were found to be using the public service model of operations. The reliability and validity of the indicator items were ascertained through diagnostic tests. Model fitness was confirmed by the use of Standard Root Means Square Residual (SRMR) and Normed Fit Index (NFI). Partial Least Squares Structural Equation Modelling (PLS-SEM) using Smart-PLS 4.0 software was used for data analysis and measurement model estimation to test hypothesis which stated that there is no significant moderating effect of governance reforms on the relationship between organizational characteristics and the performance of seaports in Anglophone Africa. The findings established positive and significant moderating effect of governance reforms on the relationship. The study concluded that the landlord model of governance reforms enhances performance thereby creating competitive advantage for ports in Anglophone African. The study also finds that seaports in Africa, seen from both theoretical and empirical point of view are increasingly identifying themselves with port governance reform models. The study recognizes that the landlord model of port governance is dominant amongst African seaports and concludes with the recommendation that all African seaports that are still operating as public service ports should reform and adopt especially the landlord model in order to experience remarkable performance improvement and maintain competitive advantage.
Abstract: The main objective of this study was to determine the moderating effect of governance reforms on the relationship between organizational characteristics and organizational performance. Structured questions in the form of questionnaires were employed to collect primary data targeting executive managers of 54 container-handling seaport terminals in A...
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