期刊文献+
共找到991篇文章
< 1 2 50 >
每页显示 20 50 100
Transcriptional memory of different types of genes is generally maintained under various environmental conditions in Saccharomyces cerevisiae 被引量:1
1
作者 Ru-Xin Wang Yu-Min Li +1 位作者 Runfa Chen Hai-Ning Du 《Journal of Genetics and Genomics》 SCIE CAS CSCD 2022年第2期173-176,共4页
When certain genes are exposed to repeated stimuli, they can be rapidly reactivated after prior expression and show enhanced expression signals, known as transcriptional memory. Such reinduction memory of gene express... When certain genes are exposed to repeated stimuli, they can be rapidly reactivated after prior expression and show enhanced expression signals, known as transcriptional memory. Such reinduction memory of gene expression is an essential adaptation to the recurring environmental changes, which facilitates divergent organisms evolve the capacity to reduce the need for genetic fitness(New et al., 2014). 展开更多
关键词 maintained evolve
原文传递
Overall National Economy Maintained Stable in the First Two Months
2
《China's Foreign Trade》 2019年第2期40-41,共2页
In the first two months of 2019,the economy performed within the reasonable range and maintained a generally stable and growing momentum;a positive trend has gradually been unveiled.The service industry grew steadily ... In the first two months of 2019,the economy performed within the reasonable range and maintained a generally stable and growing momentum;a positive trend has gradually been unveiled.The service industry grew steadily and the modern service industry developed fast In the first two months, the Index of Services Production increased by 7.3%year on year, maintaining the same speed as in December 2018. 展开更多
关键词 Overall NATIONAL ECONOMY maintained STABLE First TWO MONTHS
在线阅读 下载PDF
STUDY ON THE MAIN PARAMETERS OF SIDEPACKING IN THE ROADWAYS MAINTAINED ALONG GOB-EDGE
3
作者 郭育光 柏建彪 侯朝炯 《Journal of China University of Mining and Technology》 1994年第1期1-14,共14页
On the basis of practice this paper studies the effect mechanism of roadway sidepackings of sing-cement material with high water content, the mechanical model and formula for caleulating the parameters of sidepackings... On the basis of practice this paper studies the effect mechanism of roadway sidepackings of sing-cement material with high water content, the mechanical model and formula for caleulating the parameters of sidepackings are obtained. The results gained by caleulation in the paper are consistent with that measured in the field. And this provides a basis for the roadway sidepacking support design. 展开更多
关键词 gateway maintained along gob-edge sidepacking roof-cut resistance later period resistance
在线阅读 下载PDF
China's Imports and Exports Have Maintained Rapid Growth
4
《China's Foreign Trade》 2018年第6期51-52,共2页
Imports and exports In the period of January-October,Chinese imports and exports have maintained rapid growth,the structure has continued to be optimized,the transformation of growth drivers has been accelerated,the q... Imports and exports In the period of January-October,Chinese imports and exports have maintained rapid growth,the structure has continued to be optimized,the transformation of growth drivers has been accelerated,the quality and efficiency have improved,and momentum of steady growth has been further consolidated. 展开更多
关键词 China’s Imports and Exports Have maintained Rapid Growth In
在线阅读 下载PDF
How is neuronal homeostasis maintained?
5
作者 Jin-Hui Wang Institute of Biophysics, Chinese Academy of Sciences, Beijing China 100101 《生物物理学报》 CAS CSCD 北大核心 2009年第S1期45-46,共2页
Homeostasis in internal environment and cellular metabolism ensures cells’ functions to be stable in living organisms. Neuronal spike encoding in the brain needs to be precise
关键词 How is neuronal homeostasis maintained
原文传递
National Economy Maintained a Steady and Fast Growth in 2007
6
作者 Xie Fuzhan Commissioner, National Bureau of Statistics of China 《China Textile》 2008年第2期14-16,共3页
In 2007, the national economy kept steady and fast growth with the features of rapid economic growth, optimized structure, increased efficiency and improved livelihood of the people.
关键词 National Economy maintained a Steady and Fast Growth in 2007
在线阅读 下载PDF
New Study Uncovers How Immune Tolerance to Food Is Maintained
7
《Bulletin of the Chinese Academy of Sciences》 2023年第2期70-71,共2页
Eating a meal normally doesn’t trigger an inflammatory immune reaction,but how the body maintains tolerance to food has been unclear.Now,a new study published in Cell(doi:10.1016/j.cell.2023.05.027)by scientists at t... Eating a meal normally doesn’t trigger an inflammatory immune reaction,but how the body maintains tolerance to food has been unclear.Now,a new study published in Cell(doi:10.1016/j.cell.2023.05.027)by scientists at the University of Science and Technology of China(USTC)and Yale University School of Medicine reveals an unexpected role of a protein called gasdermin D(GSDMD)in inducing immune tolerance to food in the small intestine. 展开更多
关键词 HAS MAINTAIN SHE
在线阅读 下载PDF
Bacterial diversity in soils subjected to long-term chemical fertilization can be more stably maintained with the addition of livestock manure than wheat straw 被引量:41
8
《Science Foundation in China》 CAS 2015年第4期4-4,共1页
With the support by the National Natural Science Foundation of China and the Strategic Priority Research Program of the Chinese Academy of Sciences,Prof.Chu Haiyan’s laboratory at the Institute of Soil Science,Chines... With the support by the National Natural Science Foundation of China and the Strategic Priority Research Program of the Chinese Academy of Sciences,Prof.Chu Haiyan’s laboratory at the Institute of Soil Science,Chinese Academy of Sciences,reported comparative analysis of bacterial communities in soils that have been subjected to 30years of chemical fertilization(NPK)with the addition of either cow manure,pig manure or wheat straw residues,which was published in Soil Biology&Biochemistry(2015,88:9—18). 展开更多
关键词 FERTILIZATION MANURE wheat LIVESTOCK STRAW maintained RESIDUES STRATEGIC amendment stably
原文传递
CD226:a potent driver of antitumor immunity that needs to be maintained 被引量:1
9
作者 Jiacheng Bi 《Cellular & Molecular Immunology》 SCIE CAS CSCD 2022年第9期969-970,共2页
Inhibitory receptors expressed on the immune cell surface have emerged as checkpoint molecules that could be therapeutically targeted for tumor immunotherapy.However,antitumor immunity mediated by checkpoint blockade ... Inhibitory receptors expressed on the immune cell surface have emerged as checkpoint molecules that could be therapeutically targeted for tumor immunotherapy.However,antitumor immunity mediated by checkpoint blockade depends on optimal recognition of tumor cells through the activation of receptors on antitumor effector immune cells,such as CD8^(+)T cells and NK cells.Therefore,sufficient and maintained expression levels of activating receptors on these effector immune cells are essential for antitumor immunity and checkpoint blockade immunotherapy. 展开更多
关键词 IMMUNITY maintained IMMUNOTHERAPY
暂未订购
THE NUMBER OF ALLELES MAINTAINED IN A NONSYNCHRONIZED POPULATION
10
作者 胡中立 《Chinese Science Bulletin》 SCIE EI CAS 1989年第10期879-880,共2页
Based on the birth and death process, Gu Xun et al., (1987) inferred a frequency distribution density function φ(x) of the neutral genes maintained in a nonsynchronized population, and obtained a corresponding formu... Based on the birth and death process, Gu Xun et al., (1987) inferred a frequency distribution density function φ(x) of the neutral genes maintained in a nonsynchronized population, and obtained a corresponding formula φ_N(x) in the 展开更多
关键词 NEUTRAL maintained alleles BIRTH inferred INFINITE notation chosen synchronized CONVERGENT
在线阅读 下载PDF
Cell therapy rejuvenates the neuroglial-vascular unit
11
作者 Bandy Chen 《Neural Regeneration Research》 2026年第4期1542-1543,共2页
The rise of the aging population parallels the rapidly increasing cases of neurological disorders. This puts pressure on scientists and physicians to find novel methods that can prevent and treat neurodegeneration. Th... The rise of the aging population parallels the rapidly increasing cases of neurological disorders. This puts pressure on scientists and physicians to find novel methods that can prevent and treat neurodegeneration. The brain is made up of a complex network of different cell types that work in tandem to maintain systemic homeostasis. 展开更多
关键词 maintain systemic homeostasis prevent treat neurodegeneration cell therapy neurological disorders neuroglial vascular unit network different cell types NEURODEGENERATION aging population
暂未订购
Specific dendritic spine modifications and dendritic transport:From in vitro to in vivo
12
作者 Albert H.K.Fok Charlotte H.M.Lam Cora S.W.Lai 《Neural Regeneration Research》 2026年第2期665-666,共2页
Dendritic spines are small protrusions along dendrites that contain most of the excitatory synapses in principal neurons,playing a crucial role in neuronal function by creating a compartmentalized environment for sign... Dendritic spines are small protrusions along dendrites that contain most of the excitatory synapses in principal neurons,playing a crucial role in neuronal function by creating a compartmentalized environment for signal transduction.The plasticity of spine morphologies provides a tunable handle to regulate calcium signal dynamics,allowing rapid regulation of protein expression necessary to establish and maintain synapses(Cornejo et al.,2022).If excitatory inputs were to be located primarily on dendritic shafts,dendrites would frequently short-circuit,preventing voltage signals from propagating(Cornejo et al.,2022).It is thus not surprising that the structural plasticity of dendritic spines is closely linked to synaptic plasticity and memory formation(Berry and Nedivi,2017).While comprehensive in vitro studies have been conducted,in vivo studies that directly tackle the mechanism of dendritic transport and translation in regulating spine plasticity spatiotemporally are limited. 展开更多
关键词 excitatory synapses principal neuronsplaying compartmentalized environment establish maintain synapses cornejo dendritic spines regulate calcium signal dynamicsallowing regulation protein expression dendritic shaft
暂未订购
Exp. and Imp. of Chinese textile machinery maintained rapid growth
13
作者 Liu Xin Guoyun 《纺织服装周刊》 2010年第22期9-9,共1页
In the year 2010,the exports and imports of Chinese textile machinery maintained rapid growth,owing to the industrial upgrading and a strong recovery in demand.
关键词 of Chinese textile machinery maintained rapid growth Exp and Imp
原文传递
The National Economy Maintained a Steady and Fast Growth in 2007
14
《中国经济景气月报》 2008年第1期5-5,共1页
In 2007,the national economy kept steady and fast growth with the features of rapid economic growth,optimized structure,increased efficiency and improved livelihood of the people. According to preliminary estimation,t... In 2007,the national economy kept steady and fast growth with the features of rapid economic growth,optimized structure,increased efficiency and improved livelihood of the people. According to preliminary estimation,the gross domestic product (GDP)for the year was 24,661.9 billion yuan,up by 11.4 percent,or 0.3 percentage point higher than that in the previous year,represent- 展开更多
关键词 In The National Economy maintained a Steady and Fast Growth in 2007
原文传递
CHU WAYS MAINTAINED THROUGHOUT THE AGES
15
作者 LUO XIAOGE MAN SUJIE 《Women of China》 1995年第4期45-45,共1页
HUNAN Province at one time was known as Chudi, which means the land of Chu. Every year, when the floods would come to Chudi, the local people would carry their stores out of the high mountains using a technique they c... HUNAN Province at one time was known as Chudi, which means the land of Chu. Every year, when the floods would come to Chudi, the local people would carry their stores out of the high mountains using a technique they called "fang pai," or rafting. It took about six months to carry a raftload of goods down the mountain, 展开更多
关键词 CHU WAYS maintained THROUGHOUT THE AGES
原文传递
The Stage Set for 2025
16
作者 Zhang Hui 《China Today》 2025年第1期2-2,共1页
As 2024 comes to an end,the pickup in consumption and robust growth in a range of sectors have bolstered confidence that the Chinese economy is right on track to meet the preset growth rate of around five percent.Bene... As 2024 comes to an end,the pickup in consumption and robust growth in a range of sectors have bolstered confidence that the Chinese economy is right on track to meet the preset growth rate of around five percent.Benefiting from a flurry of consumption-stimulating policies and measures,China’s online retail sales surpassed RMB 14 trillion in the January-November period,a year-on-year increase of 7.4 percent.Imports and exports maintained steady growth,climbing by 4.9 percent year-on-year in renminbi terms.Value-added industrial output also expanded 5.8 percent year-on-year.The volume of express delivery parcels reached a new high of 150 billion and is expected to grow higher still given the new-year festivities ahead. 展开更多
关键词 maintained expanded measures
在线阅读 下载PDF
Forging Partners in Development
17
《ChinAfrica》 2025年第1期2-2,共1页
China-Africa relations maintained their upward trajectory in 2024,with new plans for future cooperation taking shape.Chinese President Xi Jinping described the China-Africa partnership as being at its best in history.... China-Africa relations maintained their upward trajectory in 2024,with new plans for future cooperation taking shape.Chinese President Xi Jinping described the China-Africa partnership as being at its best in history.The Beijing Summit of the Forum on China-Africa Cooperation(FOCAC),held in September 2024,elevated bilateral ties between China and African countries with diplomatic relations with China to a strategic level.It also redefined China-Africa relations as an“all-weather China-Africa community with a shared future for the new era.”This signifies that China and Africa will remain steadfast friends and close development partners,regardless of changes in the international landscape. 展开更多
关键词 AFRICA maintained PARTNER
原文传递
Harnessing the Power of Collaboration China,Zimbabwe celebrate 45 years of fruitful partnership,aiming to expand cooperation across all areas
18
《ChinAfrica》 2025年第4期35-37,共3页
The year 2025 marks the 45th anniversary of the establishment of diplomatic relations between China and Zimbabwe.During this period,China-Zimbabwe economic cooperation has deepened,especially in the fields of infrastr... The year 2025 marks the 45th anniversary of the establishment of diplomatic relations between China and Zimbabwe.During this period,China-Zimbabwe economic cooperation has deepened,especially in the fields of infrastructure construction,mineral resource development,and agriculture.The two sides have maintained a high degree of political mutual trust and have cooperated closely in international affairs.Cultural exchanges and people-to-people contacts have expanded,and both nations continue to work together to further deepen their partnership. 展开更多
关键词 mutual maintained expanded
原文传递
EXCHANGE CENTER STAGE The past decade brought increasingly frequent China-Vietnam theatrical exchanges through multiple channels
19
作者 Peng Shituan 《China Report ASEAN》 2025年第1期24-26,共3页
China and Vietnam have maintained close theatrical exchange.A group of Vietnamese students studied at the Central Academy of Drama and the National Academy of Chinese Theatre Arts(NACTA)of China in the 1950s and’60s.... China and Vietnam have maintained close theatrical exchange.A group of Vietnamese students studied at the Central Academy of Drama and the National Academy of Chinese Theatre Arts(NACTA)of China in the 1950s and’60s.The past decade has witnessed steadily improving relations between the two countries.Their cultural exchange,especially in theatrical arts,has become increasingly fruitful in three distinct ways. 展开更多
关键词 maintained VIETNAM frequent
在线阅读 下载PDF
面向实战的装备系统RMS综合仿真验证技术
20
作者 张悦 张文良 +3 位作者 冯强 郭星 任羿 王自力 《系统仿真学报》 北大核心 2025年第7期1823-1835,共13页
针对现有装备系统的可靠性、维修性和保障性(reliability maintainability supportability,RMS)仿真验证通常基于典型条件开展,存在实战环境和任务建模能力弱的问题,提出了一种基于多智能体的RMS仿真验证框架。突破了复杂环境与多变任... 针对现有装备系统的可靠性、维修性和保障性(reliability maintainability supportability,RMS)仿真验证通常基于典型条件开展,存在实战环境和任务建模能力弱的问题,提出了一种基于多智能体的RMS仿真验证框架。突破了复杂环境与多变任务的智能体建模技术,构建了环境类智能体、任务类智能体与装备及保障系统的交互机制,给出了基于仿真的RMS综合评价方法。案例验证表明:所提出的RMS综合仿真验证方法能够实现复杂环境与多变任务建模,支持完成面向实战的仿真验证与设计方案综合评价,满足实战化研制需求。 展开更多
关键词 RMS(reliability maintainability supportability) 多智能体 仿真验证 复杂环境 多变任务
原文传递
上一页 1 2 50 下一页 到第
使用帮助 返回顶部