155 research outputs found

    The relationship between order quantity <i>q</i><sub><i>2</i></sub> and completion intensity of social responsibility.

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    The relationship between order quantity q2 and completion intensity of social responsibility.</p

    The relationship between social responsibility <i>η</i><sub>1</sub> and completion intensity of social responsibility.

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    The relationship between social responsibility η1 and completion intensity of social responsibility.</p

    The relationship between order quantity <i>q</i><sub><i>1</i></sub> and completion intensity of social responsibility.

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    The relationship between order quantity q1 and completion intensity of social responsibility.</p

    S1 Appendix -

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    The relationship between systems expected profit and completion intensity of social responsibility.

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    The relationship between systems expected profit and completion intensity of social responsibility.</p

    The relationship between wholesale price <i>w</i><sub><i>1</i></sub> and completion intensity of social responsibility.

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    The relationship between wholesale price w1 and completion intensity of social responsibility.</p

    Waste PET Plastic-Derived CoNi-Based Metal–Organic Framework as an Anode for Lithium-Ion Batteries

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    Recycling waste PET plastics into metal–organic frameworks is conducive to both pollution alleviation and sustainable economic development. Herein, we have utilized waste PET plastic to synthesize CoNi-MOF applied to lithium battery anode materials via a low-temperature solvothermal method for the first time. The preparation process is effortless, and the sources’ conversion rate can reach almost 100%. In addition, the anode performance of MOFs with various Co/Ni mole ratios was investigated. The as-synthesized Co0.8Ni-MOF exhibits excellent crystallinity, purity, and electrochemical performance. The initial discharge and charge capacities are 2496 and 1729 mAh g–1, respectively. Even after 200 cycles, the Co0.8Ni-MOF electrode can exhibit a high Coulombic efficiency of over 99%. Consequently, given the environmental and economic benefits, the Co0.8Ni-MOF derived from waste PET plastic is thought to be an appealing anode material for lithium-ion batteries

    Differences in Fine-Root Biomass of Trees and Understory Vegetation among Stand Types in Subtropical Forests

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    <div><p>Variation of total fine-root biomass among types of tree stands has previously been attributed to the characteristics of the stand layers. The effects of the understory vegetation on total fine-root biomass are less well studied. We examined the variation of total fine-root biomass in subtropical tree stands at two sites of Datian and Huitong in China. The two sites have similar humid monsoon climate but different soil organic carbon. One examination compared two categories of basal areas (high vs. low basal area) in stands of single species. A second examination compared single-species and mixed stands with comparable basal areas. Low basal area did not correlate with low total fine-root biomass in the single-species stands. The increase in seedling density but decrease in stem density for the low basal area stands at Datian and the quite similar stand structures for the basal-area contrast at Huitong helped in the lack of association between basal area and total fine-root biomass at the two sites, respectively. The mixed stands also did not yield higher total fine-root biomasses. In addition to the lack of niche complementarity between tree species, the differences in stem and seedling densities and the belowground competition between the tree and non-tree species also contributed to the similarity of the total fine-root biomasses in the mixed and single-species stands. Across stand types, the more fertile site Datian yielded higher tree, non-tree and total fine-root biomasses than Huitong. However, the contribution of non-tree fine-root biomass to the total fine-root biomass was higher at Huitong (29.4%) than that at Datian (16.7%). This study suggests that the variation of total fine-root biomass across stand types not only was associated with the characteristics of trees, but also may be highly dependent on the understory layer.</p></div
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