Detoxification and Resource Recovery of Chromium-Containing Wastes
In: Environmental Materials and Waste, S. 265-284
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In: Environmental Materials and Waste, S. 265-284
The development potential of a regional port cluster (RPC) is subject to the internal and external factors influencing port development. Port cargo throughput is an important internal factor, whereas import and export volume is a significant external factor. The growth rate of import and export volume is disproportionate to that of port cargo throughput. This study aims to measure the allometric relationship between the two abovementioned factors and establish a comprehensive development potential evaluation system on the basis of the RPC growth rate. This work uses a case study of the ports in China's Pearl River Delta, which is being greatly influenced by the framework agreement and outline of the development of the Greater Bay Area (GBA) in China. Findings reveal that import and export volume has a higher impact on port development potential than does port cargo throughput. In addition, Shenzhen has the highest development potential in terms of import and export volume, while Zhuhai Port has the highest potential in terms of port cargo throughput. Finally, an evaluation using the comprehensive development potential evaluation system shows that Shenzhen Port has the best comprehensive port development potential. Evaluating the development potential of ports in RPCs will offer useful insights that can be used by regional port company groups and relevant governmental authorities in making scientific decisions on port development and planning, especially in the crucial stage of the establishment of the GBA, and in rationally coordinating their development and minimizing unfair competition.
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In: Journal of the Society for Gynecologic Investigation: official publication of the Society for Gynecologic Investigation, Band 5, Heft 1, S. 124A-124A
ISSN: 1556-7117
Anti-Retroviral Therapy (ART) is the recommended first line therapy for patients with HIV. Since 2004, Chinese government has provided free Chinese herbal medicine (CHM) for Chinese HIV/AIDS patients. Data of living patients with HIV from the NFTCMP database and Center for Disease Control (CDC) database during 2003-2016 in Guangxi province was obtained and compared. Patients were divided into 3 groups according to their recorded treatment regimens. A total of 2954 patients with their treatment recorded in the two databases were included for analysis, their median age was 46 years (IQR = 36-59), and 64.63% were male. CHM regimens users had baseline CD4 cell counts (380.11±240.59 cell/μL), approximately 100 cell/μL significantly higher than patients receiving CHM combined with ART regimens or only ART regimens. There was no significant difference in mortality among groups. All three regimens improved patients' CD4 cell counts. Compared to the sharp improvement in ART group during the first 6 months, CD4 cell counts of patients in CHM group and CHM combined with ART group showed a smooth and steady rise. CD4 counts of the combined group remained much lower than ART group in the first 3 years, but overtook ART group in the fourth year.
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The nodal-line semimetals have attracted immense interest due to the unique electronic structures such as the linear dispersion and the vanishing density of states as the Fermi energy approaching the nodes. Here, we report temperature-dependent transport and scanning tunneling microscopy (spectroscopy) [STM(S)] measurements on nodal-line semimetal ZrSiSe. Our experimental results and theoretical analyses consistently demonstrate that the temperature induces Lifshitz transitions at 80 and 106 K in ZrSiSe, which results in the transport anomalies at the same temperatures. More strikingly, we observe a V-shaped dip structure around Fermi energy from the STS spectrum at low temperature, which can be attributed to co-effect of the spin-orbit coupling and excitonic instability. Our observations indicate the correlation interaction may play an important role in ZrSiSe, which owns the quasi-two-dimensional electronic structures. © 2020 American Physical Society. ; This work was supported by the National Key R&D Program (Grants No. 2016YFA0300404, No. 2016YFA0401803, No. 2017YFA0303201, No. 2015CB921103, and No. 2019YFA0308602), the National Nature Science Foundation of China (Grants No. 11674326, No. 11674331, No. 11774351, No. 11874357, No. 11625415, No. 11374260, No. U1432139, No. U1832141, and No. U1932217), Key Research Program of Frontier Sciences, CAS (Grant No. QYZDB-SSW-SLH015), the "Strategic Priority Research Program (B)" of the Chinese Academy of Sciences, Grant No. XDB33030100, the "100 Talents Project" of the Chinese Academy of Sciences, CASHIPS Director's Fund (Grant No. BJPY2019B03) and Science Challenge Project (Grant No. TZ2016001). A portion of this work was supported by the High Magnetic Field Laboratory of Anhui Province, the Fundamental Research Funds for the Central Universities in China, the European Research Council under the European Union's Seventh Framework Program (FP/2007-2013) through ERC Grant No. 338957 and by NWO via Spinoza Prize, and the Cluster of Excellence "The Hamburg Centre for Ultrafast Imaging (CUI)" of the German Science Foundation (DFG).
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In: Environmental Materials and Waste, S. xix-xxiii
Background: The COVID-19 pandemic has disrupted routine hospital services globally. This study estimated the total number of adult elective operations that would be cancelled worldwide during the 12 weeks of peak disruption due to COVID-19. Methods: A global expert response study was conducted to elicit projections for the proportion of elective surgery that would be cancelled or postponed during the 12 weeks of peak disruption. A Bayesian β-regression model was used to estimate 12-week cancellation rates for 190 countries. Elective surgical case-mix data, stratified by specialty and indication (surgery for cancer versus benign disease), were determined. This case mix was applied to country-level surgical volumes. The 12-week cancellation rates were then applied to these figures to calculate the total number of cancelled operations. Results: The best estimate was that 28 404 603 operations would be cancelled or postponed during the peak 12 weeks of disruption due to COVID-19 (2 367 050 operations per week). Most would be operations for benign disease (90·2 per cent, 25 638 922 of 28 404 603). The overall 12-week cancellation rate would be 72·3 per cent. Globally, 81·7 per cent of operations for benign conditions (25 638 922 of 31 378 062), 37·7 per cent of cancer operations (2 324 070 of 6 162 311) and 25·4 per cent of elective caesarean sections (441 611 of 1 735 483) would be cancelled or postponed. If countries increased their normal surgical volume by 20 per cent after the pandemic, it would take a median of 45 weeks to clear the backlog of operations resulting from COVID-19 disruption. Conclusion: A very large number of operations will be cancelled or postponed owing to disruption caused by COVID-19. Governments should mitigate against this major burden on patients by developing recovery plans and implementing strategies to restore surgical activity safely.
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