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Achievements and development ofChina’s space activities

Wang Liheng

Strategic Study of CAE 2008, Volume 10, Issue 12, Pages 10-12

Abstract:

This paper describes the current situation of the international spaceactivities, summarizes the new trends of the new space programs in the world and their characteristics, briefly introduces the brilliant achievements of China's space activities, and gives a full prospectfor the future development of China's space activities.

Keywords： China’s space activities new space programs achievements of China’s space activities

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Development Strategy and Key Areas of China5 s Space Activities

Sun Laiyan

Strategic Study of CAE 2006, Volume 8, Issue 10, Pages 6-12

Abstract:

This paper reviews the achievements of China´s space industry made in the past 50 years, summarizesthe experiences and problems, and, against the backdrop of the developing trend of international spaceactivities, describes the future development strategy and key areas of China´s space industry.

Keywords： China's space activities development strategy key areas

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A Milestone in China´s Aerospace History—White Paper on China´s Space Activities

Guo Baozhu

Strategic Study of CAE 2006, Volume 8, Issue 10, Pages 1-5

Abstract: Information Office of the State Council published November 21 a white paper, titled “China´s SpaceActivities,” which gives a brief introduction to the aims and principles, present situation, futuredevelopment and international cooperation concerning China，s space activities.This was the first time that the Chinese government publicly introduced to the world the space developmentactivities, the roles and status of organizations and enterprises of different types in space areas,

Keywords： white paper on China's space activities concept of ‘ broad space activities’ aerospace policy future

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Scientific Management of China's Space Activities

Wang Liheng

Strategic Study of CAE 2006, Volume 8, Issue 11, Pages 1-6

Abstract:

The paper reviews the system engineering formed during the development of China´s space activitiescentralized administration are the essential manifestation of system engineering of China ´ s spaceactivities, and also are the important feature of scientific management of space activities and thefundamental guarantee for the sustained and healthy development of China´ s space activities.

Keywords： China's space activities system engineering scientific management

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Development Strategy of China's Space Industry

Zhang Xiaoqiang

Strategic Study of CAE 2006, Volume 8, Issue 11, Pages 7-12

Abstract:

China ´s space industry has witnessed a series of remarkable achievements in the past 50 yearsPromoting the development of space industry is the objective request of building an innovation-orientedThe future development of China ´s space industry should be aimed at serving the national economyEfforts should be made to form a space industrial system, which has a certain economic scale and a complete

Keywords： China's space activities application innovation development strategy

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The Present Situation and Prospect of China's Space-entering Capacity

Long Lehao,Wang Xiaojun,Guo Linli

Strategic Study of CAE 2006, Volume 8, Issue 11, Pages 25-28

Abstract:

The paper describes the present situation and development trend of the launching system in space activitieslaunched quickly and flexibly; developing launching vehicles capable of manned lunar landing and outer space

Keywords： space activities “Long-March” rocket family manned lunar landing reusable launching vehicles

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Considerations on China' s Earth Observation Technology——Current Activities and Future Directions

Jiang Jingshan

Strategic Study of CAE 2006, Volume 8, Issue 11, Pages 19-24

Abstract:

Earth Observation and application is one of the core missions in space technology development.

Keywords： China's space activities earth observation technology remote sensing information processing

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Development Prospect of China's New Generation of Launch Vehicles

Li Dong,Cheng Tangming

Strategic Study of CAE 2006, Volume 8, Issue 11, Pages 33-38

Abstract: satellites into near-earth, geostationary and sun-synchronous orbits, launching manned spacecraft into space, and launching explorer into outer space.To meet the demands of future development of space technology, China will accelarate its developmentnon-toxic, non-polluting, high-performance and low-cost qualities so as to increase China ´ s space-entering

Keywords： space activities “Long-March” rockets new generation of launch vehicles

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Estrogenic activities of di-2-ethylhexyl phthalate

JIN Qiumei, LI Yan, SUN Zengrong

Frontiers of Medicine 2008, Volume 2, Issue 3, Pages 303-308 doi: 10.1007/s11684-008-0058-2

Abstract: Estrogenic activities of DEHP were studied by assays of human breast cancer MCF-7 cell proliferation

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Synthesis, insecticidal activities and DFT study of pyrimidin-4-amine derivatives containing the 1,2,4

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 7, Pages 1090-1100 doi: 10.1007/s11705-021-2091-5

Abstract: Twenty six novel pyrimidin-4-amine derivatives containing the 1,2,4-oxadiazole motif were synthesized. Their chemical structures were confirmed by ¹H nuclear magnetic resonance (NMR), ¹³C NMR, and high-resolution mass spectrography. The insecticidal activity results indicated that some of them possessed excellent insecticidal activity (100%) against Mythimna separate, especially for compounds 6d, 6f, 6o, 6w, 6y and 6z. These compounds exhibited no activity against the insects Aphis medicagini and Tetranychus cinnabarinus. The structure- insecticidal activity relationships are discussed. Density functional theory analysis can potentially be used to design more active compounds. These results provide useful insecticide design information for further optimization.

Keywords： synthesis pyrimidin-4-amine derivatives 1 2 4-oxadiazole insecticidal activity structure-activity relationship

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A comparison of the biological activities of ethyl acetate fractions from the stems and leaves of

Zhaolei WANG, Kai JIANG, Qinchao DING, Shujun LIU, Xiaobing DOU, Bin DING

Frontiers of Agricultural Science and Engineering 2020, Volume 7, Issue 4, Pages 505-512 doi: 10.15302/J-FASE-2019271

Abstract:

Pursh (PCP) is a popular traditional medicinal plant in China, widely used for the treatment of a variety of liver diseases. Although it has been long recognized that the main active elements of PCP are contained in ethyl acetate fraction (EAF), little is known so far in terms of the relative effectiveness of EAF derived from the stems versus leaves of this plant. In the current study, we prepared EAF by reflux extraction and sequential extraction from the stems (SEAF) and leaves (LEAF) of PCP and tested their hepatoprotective efficacies. The extract rates and flavonoid contents of LEAF were higher than those of SEAF. EAFs (>50 μg·mL ) prevented lipid accumulation in cells and protected against lipotoxicity injury when the concentration exceeded 25 μg·mL . More than 95% free radicals released by 2,2-diphenyl-1-picrylhydrazyl (DPPH) were eliminated by 25 μg·mL SEAF and 50 μg·mL LEAF, respectively. Further, EAFs (25 μg·mL ) also showed protective antioxidant effects, with the activity of LEAF being significantly higher than that of SEAF. EAFs (10 mg·mL ) also showed similar unspecific bacteriostatic activity. In comparison with SEAF, LEAF contained more flavonoids and had a higher anti-oxidation capability and for these reasons we suggest it should be better for clinical use.

Keywords： antibacterial anti-oxidation lipid accumulation lipotoxicity Penthorum chinense Pursh

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On the New Thought Concerning Water-related Human Activities

Li Peicheng

Strategic Study of CAE 2000, Volume 2, Issue 2, Pages 5-9

Abstract: experience and looking for the future, the author advances some new thought on water-related human activitiescentury, and cites enormous cases and data to testify them and holds that in the water-related human activitiesin the 21st century, the relationships among human activities, water-body dynamic states, ecologicaland other productive activities upon water-body dynamics as well as the inverse actions.In the future water-related human activities, the human beings should adapt to and take advantage of

Keywords： water-related activities water-saving water protection new thought

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Soil enzyme activities and their indication for fertility of urban forest soil

SHAN Qihua, YU Yuanchun, ZHANG Jinchi, YU Jian

Frontiers of Environmental Science & Engineering 2008, Volume 2, Issue 2, Pages 218-223 doi: 10.1007/s11783-008-0037-5

Abstract: soil enzyme on soil fertility as well as the correlation between physicochemical properties and enzyme activitiesBasic soil physicochemical properties and enzyme activities were analyzed in the laboratory.total nitrogen (N) had great effects on hydrogen peroxidase, dehydrogenase, and alkaline phosphatase activitiesHowever, pH only had great effect on hydrogen peroxidase, dehydrogenase, and alkaline phosphatase activitiesThe more soil enzyme activities there were, the higher the fertility of urban forest soil.

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Beneficial metabolic activities of inflammatory cytokine interleukin 15 in obesity and type 2 diabetes

Jianping Ye

Frontiers of Medicine 2015, Volume 9, Issue 2, Pages 139-145 doi: 10.1007/s11684-015-0377-z

Abstract:

In obesity, chronic inflammation is believed to induce insulin resistance and impairs adipose tissue function. Although this view is supported by a large body of literature, it has been challenged by growing evidence that pro-inflammatory cytokines may favor insulin sensitivity through induction of energy expenditure. In this review article, interleukin 15 (IL-15) is used as a new example to explain the beneficial effects of the pro-inflammatory cytokines. IL-15 is secreted by multiple types of cells including macrophages, neutrophils and skeletal muscle cells. IL-15 expression is induced in immune cells by endotoxin and in muscle cells by physical exercise. Its transcription is induced by transcription factor NF-κB. IL-15 binds to its receptor that contains three different subunits (α, β and γ) to activate JAK/STAT, PI3K/Akt, IKK/NF-κB and JNK/AP1 pathways in cells. In the regulation of metabolism, IL-15 reduces weight gain without inhibiting food intake in rodents. IL-15 suppresses lipogenesis, stimulates brown fat function, improves insulin sensitivity through weight loss and energy expenditure. In human, circulating IL-15 is negatively associated with body weight. In the immune system, IL-15 stimulates proliferation and differentiation of T cells, NK cells, monocytes and neutrophils. In the anti-obesity effects of IL-15, T cells and NK cells are not required, but leptin receptor is required. In summary, evidence from human and rodents supports that the pro-inflammatory cytokine IL-15 may enhance energy expenditure to protect the body from obesity and type 2 diabetes. The mechanism of IL-15 action remains to be fully uncovered in the regulation of energy expenditure.

Keywords： inflammation obesity cytokine energy expenditure insulin resistance

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Antioxidant and antitumor effects and immunomodulatory activities of crude and purified polyphenol extract

Xiaohong Kou,Lihua Han,Xingyuan Li,Zhaohui Xue,Fengjuan Zhou

Frontiers of Chemical Science and Engineering 2016, Volume 10, Issue 1, Pages 108-119 doi: 10.1007/s11705-016-1553-7

Abstract: The antioxidant and antitumor effects as well as the immunomodulatory activities of crude and purifiedassays demonstrated that blueberry purified polyphenol extract (BBPP) exhibited higher antioxidant activitiesThese results indicate that BBCP has significant antioxidant and antitumor activities and that it can

Keywords： crude polyphenol extract purified polyphenol extract blueberry antioxidant antitumor immunity