19 Ergebnisse
Sortierung:
In: Environmental science and pollution research: ESPR, Band 30, Heft 34, S. 81370-81385
ISSN: 1614-7499
In: Ecotoxicology and environmental safety: EES ; official journal of the International Society of Ecotoxicology and Environmental safety, Band 207, S. 111277
ISSN: 1090-2414
In: Ecotoxicology and environmental safety: EES ; official journal of the International Society of Ecotoxicology and Environmental safety, Band 176, S. 153-161
ISSN: 1090-2414
In: Urban policy and research, Band 30, Heft 4, S. 403-421
ISSN: 1476-7244
In: Ecotoxicology and environmental safety: EES ; official journal of the International Society of Ecotoxicology and Environmental safety, Band 206, S. 111217
ISSN: 1090-2414
In: Environmental science and pollution research: ESPR, Band 27, Heft 36, S. 45591-45604
ISSN: 1614-7499
In: Ecotoxicology and environmental safety: EES ; official journal of the International Society of Ecotoxicology and Environmental safety, Band 194, S. 110406
ISSN: 1090-2414
In: Environmental science and pollution research: ESPR, Band 24, Heft 15, S. 13154-13167
ISSN: 1614-7499
In: Sage open, Band 12, Heft 1
ISSN: 2158-2440
The establishment of national experimental teaching demonstration centers (NETDCs) in China has played an important role in improving the experimental teaching level in universities and colleges, promoting scientific research, and cultivating innovative talents for national- and region-level innovations. However, how to promote the sustainable development of NETDCs in China is becoming a critical issue. This paper constructs a new theoretical model for evaluating the sustainable development of NETDCs in China. This model consists of 5 dimensions (i.e., environmental, structural, human, teaching, and output entropies), 11 primary indicators, and 34 secondary indicators. A multidimensional scale for evaluating the sustainable development of NETDCs was developed and validated based on 24,483 questionnaires from 895 NETDCs in China. The results show that the development level and overall level of NETDCs in China for all 11 primary indicators are uneven. Policy measures for promoting the sustainable development of NETDCs are proposed and discussed.
In: Ecotoxicology and environmental safety: EES ; official journal of the International Society of Ecotoxicology and Environmental safety, Band 203, S. 111055
ISSN: 1090-2414
In: CELL-REPORTS-D-21-00619
SSRN
Working paper
In: Ecotoxicology and environmental safety: EES ; official journal of the International Society of Ecotoxicology and Environmental safety, Band 212, S. 111992
ISSN: 1090-2414
In: Environmental science and pollution research: ESPR, Band 27, Heft 28, S. 34702-34714
ISSN: 1614-7499
In: Environmental science and pollution research: ESPR, Band 26, Heft 26, S. 26912-26924
ISSN: 1614-7499
In: Science and technology of nuclear installations, Band 2019, S. 1-10
ISSN: 1687-6083
In order to resolve the situations of nonuniform coolant flow distribution and insufficient vortex suppression, the existing Pressurized Water Reactor (PWR) usually adopts complex coolant mixing structures. However, those structures will greatly increase the complexity and maintenance cost of the system. To solve this problem, a trimming-based design method is proposed in this paper for the complex system and applies it to the design process of the PWR coolant flow distribution device. The function model of the coolant flow distribution system is built based on its functional analysis, and, according to the result of the component feature analysis, the columns and part of the basket are trimmed in order to simplify the overall structure of the system. To further solve the technical contradictions occurred in the simplified system, the contradiction solving tools of TRIZ theory are adopted. By setting the stereo flow equalizing plate, which can strengthen the function of flow distribution and vortex suppression, a coolant flow distribution device for PWR based on dome structure is obtained finally. This device owns a simple structure with good effect on coolant flow distribution and vortex suppression, which can achieve the goal of uniform coolant flow distribution of the system effectively.
