Analysis on The Framing and Evolution Trend of Sino Us Narratives Under the Crisis of The New Crown Pneumonia Epidemic

Strategic narratives are meaning-making devices implemented by political actors and constitute a discourse weapon for great power competition. In the context of the COVID-19 pandemic, discourses of fear, conspiracy theories, exclusive nationalism and populism are spreading rapidly on social media platforms. The “other” narrative is committed to deconstructing the other party’s leadership legitimacy and advancing narrative coercion and emotion. mobilization. During the first half of the epidemic, the Trump administration’s rhetoric and hostile narrative caused Sino-US trust to spiral downward. In the post-epidemic era, the new Biden administration came to power and provided a window of opportunity to break the narrative inertia. As a typical establishment president, although Biden will still emphasize competition with China, his narrative style is more rational and balanced. In response to the Biden administration's narrative orientation of relative restraint, maintaining "strategic patience" and limited multilateralism, China can adopt a more diversified narrative response strategy and "walk slowly" to reshape the narrative space between China and the United States.

Studies on Abundance and Diversity of Copepods from Freshwaters

Present study was conducted to explore the abundance and diversity of copepods from fresh water bodies of District Gujranwala Punjab, Pakistan. Sampling was done on monthly basis for the period of one year from October 2011 to September 2012. Physico-chemical parameters of waters such as temperature, pH, dissolved oxygen, conductivity, total dissolved solids, total hardness, transparency and turbidity were determined and their relation with copepod population was also noted. Copepods showed a positive correlation with temperature, pH, conductivity, total, dissolved solids, total hardness and turbidity except dissolved oxygen and transparency. Analysis of variance of all parameters showed significant difference (p<0.05) except pH. Copepod samples were also taken monthly with plankton net having mesh size 70 µm. After isolation copepods were counted in a Sedgwick rafter chamber or cell at 60-100x magnification using inverted Olympus microscope. Photographs were taken with microscope LAICA 50/50 with 5 megapixel camera fitted on it. The shape of body, segments of antennae, urosome and caudal rami were observed for identification of copepods up to species level. Total 28 copepod species belonging to 13 genera and 3 families were identified. This study is the first attempt to analyze the copepod fauna of District Gujranwala Punjab, Pakistan while 17 species were newly reported from Pakistan. During study density and diversity of copepods remained high in summer and low in winter. Mesocyclops was the dominant genus and Mesocyclops edax was the dominant species at st.1, 2 and 4 while genus Eucyclops and Eucyclops agilis species was dominant at st.3. ANOVA of copepods of four study stations showed significant results (p<0.05). Cluster analysis divided the copepod data into groups or clusters on the basis of their abundance. Species present in one cluster were more similar in their abundance as compared to species of other clusters. Principal component analysis showed correlation among the species and sampling months.