Countermeasures to Promote the Training of Prefabricated Construction Talents for Architectural Design Majors in Vocational Colleges

To concentrate on cultivating prefabricated construction talents for architectural design majors in vocational colleges in China,we should adhere to the basic principles of professional coordinated development and integration of production,teaching,and research to determine the teaching objectives and contents,set up a double-teacher teaching team,and provide sufficient resources and funds.Specifically,it is necessary to optimize the curriculum system with the guidance of professional groups,create teaching situations with information platforms,introduce Building Information Modeling(BIM)technology to connect with the actual situation,adhere to the combination of education and training to improve the practice mechanism of school-enterprise cooperation,deepen the integration pattern of post-course certificate competition,and follow the ideological and political teaching route of professional course to realize the comprehensive improvement of students’knowledge,skills,and professional quality.

Training Strategies of Practical Ability of Building Materials Professionals in Higher Vocational Colleges Under the Guidance of“Three Education Reform”Concept

The main purpose of the implementation of the three-education reform concept is to improve the teaching quality and talent training level of higher vocational colleges.Through the reform,one can promote the optimization of teaching methods,provide more space for student’s self-development,and improve the quality of talent training.Building materials in higher vocational colleges are a high requirement for practical ability,which emphasizes the cultivation of students’practical ability.Under the three-education reform concept,the traditional teaching mode should be replaced to provide more practical opportunities for students,in return give more attention to the development of students’practical ability.This paper mainly explores the current situation and training strategies in building material professionals in higher vocational colleges under the reform of the three education systems for a reference.

Phase-feeding strategy for Chlorella vulgaris to enhance biomass and lipid productivity

A phase-feeding strategy of nutrients based on requirements of Chlorella vulgaris in different physiological phases was examined to maximize the biomass and lipid productivity.This strategy includes reduction of duration in adaption phase(stage-I),enhancement of biomass in growth phase(stage-II)and improvement of lipid productivity in stationary phase(stage-III).The duration of microalgae in adaption phase was reduced from 52 h to 34 h at nitrogen and phosphorus feeding rates of 5.11 mg/(L·d)and 0.54 mg/(L·d),whereas the maximum biomass concentration during growth phase was improved to(4.03±0.25)g/L at nitrogen and phosphorus feeding rates of 20.04 mg/(L·d)and 4.21 mg/(L·d).In stationary and decline phases,a maximum lipid productivity of 132.30 mg/(L·d)was achieved when nutrients supply was stopped at 128 h,which was 28.86 mg/(L·d)higher than that when nutrients supply was stopped at 104 h.This multi-phase cultivation could be a promising strategy for simultaneous enhancement of microalgae biomass and lipid productivity.

Cultivation and diversity analysis of novel marine thraustochytrids

Thraustochytrids are a group of unicellular marine heterotrophic protists,and have long been known for their biotechnological potentials in producing squalene,polyunsaturated fatty acids(PUFAs)and other bioactive products.There are less than a hundred known strains from diverse marine habitats.Therefore,the discovery of new strains from natural environments is still one of the major limitations for fully exploring this interesting group of marine protists.At present,numerous attempts have been made to study thraustochytrids,mainly focusing on isolating new strains,analyzing the diversity in specific marine habitats,and increasing the yield of bioactive substances.There is a lack of a systematic study of the culturable diversity,and cultivation strategies.This paper reviews the distribution and diversity of culturable thraustochytrids from a range of marine environments,and describes in detail the most commonly used isolation methods and the control of culture parameters.Furthermore,the perspective approaches of isolation and cultivation for the discovery of new strains are discussed.Finally,the future directions of novel marine thraustochytrid research are proposed.The ultimate goal is to promote the awareness of biotechnological potentials of culturable thraustochytrid strains in industrial and biomedical applications.