检索结果-南通市图书馆

Warming intensified the effects of nitrogen addition on N_(2)O emissions from alpine meadow in the northern q.nghai-Tibet Plateau

引用

Advances in Climate Change Research 2024年第1期15卷 101-112页

作者： Ming-Jie LI yi-q.ng GE Hasbagan GANJURJAV Guo-Zheng HU Hong-Bao WU Jun yAN shi-Cheng HE q.ng-Zhu GAO Institute of Environment and Sustainable Development in Agriculture Chinese Academy of Agricultural SciencesBeijing 100081China National Agricultural Experimental Station for Agricultural Environment Nagqu 852100China Ecology and Nature Conservation Institute Chinese Academy of ForestryBeijing 100091China College of Resource and Environment Anhui Science and Technology UniversityFengyang 233100China Nagq. Agriculture Animal Husbandryand Prataculture Science and Technology Research and Extension CenterNagqu 852100China Tongliao Experimental Middle School Tongliao 028000China

Warming and nitrogen(N)addition may impact soil nitrous oxide(N_(2)O)emissions,but the relationship between plant community composition and soil microbial activities remains *** a two-year field study in the q.nghai-Tibet Plateau,open-top chambers were used to q.antify the effects of warming,N-addition,and their interactions on N_(2)O *** found that the N-addition greatly increased N_(2)O emissions by 77.4%in 2018 when compared to the control *** contrast,warming showed little effect on N_(2)0 emissions but did increase the activity of enzymes associated with soil nitrification and denitrification.A combined effect of warming and N-addition of resulted in 208.6%(2018)and 90.8%(2019)increase in N_(2)0 emissions,respectively,compared to the individual treatments of warming or *** warming in alpine meadows is causally linked to increased legume biomass which is further intensified with the *** legume biomass(pyme activity(p<0.001)had a positive effect on N_(2)0 emissions,while diminished microbial carbon/nitrogen(MBC/MBN)(p<0.05)correlated with reduced N_(2)O *** results indicated that N-addition has a positive effect on N_(2)O emissions,and the addition of warming further intensifies this *** increased dominance of legumes and microbial N content contributes to this *** outcomes suggest that warming and atmospheric N deposition can stimulate N_(2)O emissions of alpine meadows inthefuture.

关键词： Alpine meadow Community composition Nitrogen addition Nitrous oxide flux q.nghai-Tibet Plateau Warming

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Leucine regulates lipid metabolism in adipose tissue through adipokine-mTOR-SIRT1 signaling pathway and bile acid—microbe axis in a finishing pig model

引用

Animal Nutrition 2024年第1期16卷 158-173页

作者： yunju yin Saiming Gong Mengmeng Han Jingzun Wang Hanjing shi Xianji Jiang Liu Guo yehui Duan q.uping Guo q.nghua Chen Fengna Li Key Laboratory of Agro-ecological Processes in Subtropical Region Institute of Subtropical AgricultureChinese Academy of SciencesHunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic ProcessHunan Provincial Engineering Research Center for Healthy Livestock and Poultry ProductionChangsha 410125China College of Animal Science and Technology Hunan Agricultural UniversityChangsha 410128China College of Modern Agricultural Sciences University of Chinese Academy of SciencesBeijing 100049China College of Life Science and Engineering Northwest Minzu UniversityLanzhou 730124China College of Life Sciences Hunan Normal UniversityChangsha 410128China

This study was conducted to explore the regulatory mechanism of leucine(Leu)on lipid metabolism of finishing ***-four Duroc×Landrace×Large cross pigs with an average body weight of68.33±0.97 kg were randomly allocated into 3 treatment groups with 8 replicates per group(1 pig per replicate).The dietary treatments were as follows:control group(CON),0.25%Leu group and 0.50%Leu *** experimental period was 42 *** results showed as follows.(1)Compared with the CON,0.25%and 0.50%Leu increased(Py gain(ADG),while the average backfat thickness(ABT)and the ratio of feed intake to body weight gain(F:G ratio)were decreased(Py element binding protein-1c(SREBP1c),recombinant fatty acid transport protein 1(FATP1),chemerin and peroxisome proliferatoractivated receptorγ(PPARγ)were decreased but the level of fatty acid binding protein 4(FABP4)and fatty acid translocase(FAT/CD36)were increased in backfat *** the 0.25%Leu group,the protein levels of p-Rictor,p-Raptor,p-eIF4E-binding protein 1(p-4EBP1),p-silent mating type information regulator 2homolog 1(p-SIRT1)and acetylation ribosome s6 protein kinase 1(Ac—S6K1)were increased(Py of gut microbiota in the 0.25%Leu group was *** component analysis showed that the relative abundance of Bacteroidetes,Lactobacillus and Desulfovibrio was higher in the 0.25%Leu group than the CON,but the relative abundance of Firmicutes,Treponema and shigella was lower than in the CON(Pshing pigs including allolithocholic acid(alloLCA),isolithocholic acid(isoLCA),ursodeoxycholic acid(UDCA)and hyodeoxycholic acid(HDCA),which correlate to various degrees with the above *** conclusion,Leu could promote adipose tissue lipolysis of finishing pigs through the mTOR-SIRT1 signaling pathway,a

关键词： Leu Lipid metabolism Gut microbiota Bile acid

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Differential expression profile of circular RNAs in mouse peritoneum with peritoneal fibrosis and the potential regulatory role of novel_circ_0007527

引用

Genes & Diseases 2024年第3期11卷 59-62页

作者： yingfeng shi yan Hu Hui Chen Jinq.ng Li Min Tao Xun Zhou q.n Zhong Andong q.u Shougang Zhuang Na Liu Department of Nephrology Shanghai East HospitalTongji University School of MedicineShanghai 200120China School of Life Science and Technology Advanced Institute of Translational MedicineTongji UniversityShanghai 200092China Department of Medicine Rhode Island Hospital and Alpert Medical SchoolBrown UniversityProvidenceRI 02912USA

CircRNAs,a novel type of endogenous non-coding RNAs(ncRNAs),are typically produced by back-splicing from exons of protein-coding genes,which are characterized by a covalently closed structure with neither 5'to 3'polarity nor a poly(A)tail.'On the one hand,circRNAs are involved in the regulation of a variety of important biological processes,such as apoptosis,proliferation,migration,and inflammatory responses.'On the other hand,the relationship between circRNAs and several fibrotic diseases has been reported.2 However.

关键词： endogenous peritoneal diseases

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Effects of Inoculation with Phosphate Solubilizing Bacteria on the Physiology,Biochemistry,and Expression of Genes Related to the Protective Enzyme System of Fritillaria taipaiensis ***

引用

Phyton-International Journal of Experimental Botany 2024年第2期93卷 247-260页

作者： Zhifen shi Fumei Pan Xiaotian Kong Jiaq. Lang Mingyan ye q.an Wu Guangzhi Wang Liang Han Nong Zhou College of Pharmacy Chengdu University of Traditional Chinese MedicineChengdu611130China College of Pharmacy Dali UniversityDali671000China College of Food and Biological Engineering Chongqing Three Gorges UniversityChongqing404120China Diq.ng Tibetan Autonomous Prefecture Institute of Plateau Biology Diqing674400China Chongq.ng Institute of Medicinal Plant Cultivation Chongqing408435China

Fritillaria taipaiensis *** is a widely used medicinal herb in treating pulmonary *** recent years,its wild resources have become scarce,and the demand for efficient artificial cultivation has significantly *** article is the first to apply phosphate solubilizing bacteria isolated from the rhizosphere soil of *** *** to the cultivation process of *** *** aim is to identify suitable reference strains for the artificial cultivation and industrial development of *** *** by examining the effects of various phosphate solubilizing bacteria and their combinations on photosynthesis,physiological and biochemical properties,and gene expression related to the protective enzyme system in *** *** experiment,conducted in pots at room temperature,included a control group(CK)and groups inoculated with inorganic phosphorussolubilizing bacteria:W1(Bacillus cereus),W2(Serratia plymuthica),W12(Bacillus cereus and Serratia plymuthica),and groups inoculated with organophosphorus-solubilizing bacteria:y1(Bacillus cereus),y2(Bacillus cereus),y12(Bacillus cereus and Bacillus cereus),totaling seven *** to CK,most growth indices in the bacterial addition groups showed significant differences,with W12 achieving the highest values in all indices except the leaf area *** content of photosynthetic pigments,photosynthetic parameters,and osmoregulatory substances increased variably in each bacterial treatment group.W12 exhibited the highest content of chlorophyll a and soluble protein,while W1 had the highest free proline *** activities of peroxidase(POD),superoxide dismutase(SOD),and catalase(CAT)in all inoculated groups were higher than in CK,with significant changes in SOD and CAT *** malondialdehyde(MDA)content in all inoculated groups was lower than in CK,with y12 being the lowest,at approximately 30%of *** expression corresponding to these three enzymes also increased var

关键词： Fritillaria taipaiensis P.y.Li phosphate solubiliozing bacteria photosynthesis physiology and biochemistry protective enzymes

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

由超拍电子伏特加速器产生的超高能伽马射线气泡

引用

Science Bulletin 2024年第4期69卷 449-457页

作者： LHAASO Collaboration Zhen Cao Chuandong Gao Cong Li Ruo-yu Liu Ruizhi yang 不详 Key Laboratory of Particle Astrophyics&Experimental Physics Division&Computing Center Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China University of Chinese Academy of Sciences Beijing 100049China TIANFU Cosmic Ray Research Center ChengduChina Institute of Frontier and Interdisciplinary Science Shandong UniversityQingdao 266237China School of Astronomy and Space Science Nanjing UniversityNanjing 210023China University of Science and Technology of China Hefei 230026China

We report the detection of aγ-ray bubble spanning at least 100deg2 in ultra-high energy(UHE)up to a few PeV in the direction of the star-forming region Cygnus X,implying the presence super PeVatron(s)accelerating protons to at least 10 PeV.A log-parabola form with the photon indexΓ(E)=(2.71±0.02)+(0.11±0.02)×log10(E/10 TeV)is found fitting the gamma-ray energy spectrum of the bubble *** sources,“hot spots”correlated with very massive molecular clouds,and a q.asi-spherical amorphousγ-ray emitter with a sharp central brightening are observed in the *** the core of~0.5°,spatially associating with a region containing massive OB association(Cygnus OB2)and a microq.asar(Cygnus X-3),as well as previously reported multi-TeV sources,an enhanced concentration of UHEγ-rays is observed with 2 photons at energies above 1 *** general feature of the bubble,the morphology,and the energy spectrum,are reasonably reproduced by the assumption of a particle accelerator in the core,continuously injecting protons into the ambient medium.

关键词： Cosmic rays γ-rays Interstellar medium Star cluster

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Identification of LRRC46 as a novel candidate gene for high myopia

引用

Science China Life Sciences 2024年第9期67卷 1941-1956页

作者： Lingxi Jiang Chao Dai yao Wei Bo Zhao q. Li Zhengzheng Wu Liang Zou Zimeng ye Zhenglin yang Lulin Huang yi shi Sichuan Provincial Key Laboratory for Human Disease Gene Study and the Center for Medical Genetics Department of Laboratory Medicine Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital University of Electronic Science and Technology of China Department of Ophthalmology Sichuan Provincial People's Hospital University of Electronic Science and Technology of China School of Food and Bioengineering Chengdu University School of Medicine University of Sydney Research Unit for Blindness Prevention of Chinese Academy of Medical Sciences (2019RU026) Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital Jinfeng Laboratory

High myopia(HM) is the primary cause of blindness, with the microstructural organization and composition of collagenous fibers in the cornea and sclera playing a crucial role in the biomechanical behavior of these tissues. In a previously reported myopic linkage region,MyP5(17q.1–22), a potential candidate gene, LRRC46(c.C235T, p.q.9X), was identified in a large Han Chinese pedigree. LRRC46 is expressed in various eye tissues in humans and mice, including the retina, cornea, and sclera. In subseq.ent cell experiments, the mutation(c.C235T) decreased the expression of LRRC46 protein in human corneal epithelial cells(HCE-T). Further investigation revealed that Lrrc46–/–mice(KO) exhibited a classical myopia phenotype. The thickness of the cornea and sclera in KO mice became thinner and more pronounced with age, the activity of limbal stem cells decreased, and microstructural changes were observed in the fibroblasts of the sclera and cornea. We performed RNA-seq.on scleral and corneal tissues of KO and normal control wild-type(WT) mice, which indicated a significant downregulation of the collagen synthesis-related pathway(extracellular matrix, ECM) in KO mice. Subseq.ent in vitro studies further indicated that LRRC46, a member of the important LRR protein family, primarily affected the formation of collagens. This study suggested that LRRC46 is a novel candidate gene for HM, influencing collagen protein VⅢ(Col8a1) formation in the eye and gradually altering the biomechanical structure of the cornea and sclera, thereby promoting the occurrence and development of HM.

关键词： high myopia LRRC46 biomechanics collagen protein VIII

来源：

同方期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

A wideband,high-resolution vector spectrum analyzer for integrated photonics

引用

Light(Science & Applications) 2024年第4期13卷 760-771页

作者： yi-Han Luo Baoq. shi Wei Sun Ruiyang Chen Sanli Huang Zhongkai Wang Jinbao Long Chen Shen Zhichao ye Hairun Guo Junq.u Liu International q.antum Academy 518048 ShenzhenChina. Shenzhen Institute for q.antum Science and Engineering Southern University of Science and Technology518055 ShenzhenChina. Department of Optics and Optical Engineering University of Science and Technology of China230026 HefeiChina. Hefei National Laboratory University of Science and Technology of China230088 HefeiChina. q.leido Photonics 518048 ShenzhenChina. Key Laboratory of Specialty Fiber Optics and Optical Access Networks Shanghai University200444 ShanghaiChina

The analysis of optical spectra—emission or absorption—has been arguably the most powerful approach for discovering and understanding *** invention and development of many kinds of spectrometers have eq.ipped us with versatile yet ultra-sensitive diagnostic tools for trace gas detection,isotope analysis,and resolving hyperfine structures of atoms and *** proliferating data and information,urgent and demanding req.irements have been placed today on spectrum analysis with ever-increasing spectral bandwidth and freq.ency *** req.irements are especially stringent for broadband laser sources that carry massive information and for dispersive devices used in information processing *** addition,spectrum analyzers are expected to probe the device’s phase response where extra information is *** we demonstrate a novel vector spectrum analyzer(VSA)that is capable of characterizing passive devices and active laser sources in one *** a dual-mode VSA can measure loss,phase response,and dispersion properties of passive *** also can coherently map a broadband laser spectrum into the RF *** VSA features a bandwidth of 55.1 THz(1260–1640 nm),a freq.ency resolution of 471 kHz,and a dynamic range of 56 ***,our fiber-based VSA is compact and *** req.ires neither high-speed modulators and photodetectors nor any active feedback ***,we employ our VSA for applications including characterization of integrated dispersive waveguides,mapping freq.ency comb spectra,and coherent light detection and ranging(LiDAR).Our VSA presents an innovative approach for device analysis and laser spectroscopy,and can play a critical role in future photonic systems and applications for sensing,communication,imaging,and q.antum information processing.

关键词： spectrum resolution coherent

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

学习驱动的分布式异构混合流水车间批量流能效调度优化

引用

控制理论与应用 2024年第6期41卷 1018-1028页

作者：邵炜世皮德常邵仲世南京航空航天大学计算机科学与技术学院江苏南京211106 南京师范大学计算机与电子信息学院/人工智能学院江苏南京210023 陕西师范大学计算机科学学院陕西西安710119 江苏省信息安全保密工程中心江苏南京210023

本文研究了分布式异构混合流水车间批量流能效调度问题,其中每个工厂的加工效率不同,工件可以分割成若干子批进入加工系统.以最大完成时间和总能耗为优化目标,建立了混合整数规划模型.本文提出了一种学习驱动的多目标进化算法,包括学习... 详细信息

本文研究了分布式异构混合流水车间批量流能效调度问题,其中每个工厂的加工效率不同,工件可以分割成若干子批进入加工系统.以最大完成时间和总能耗为优化目标,建立了混合整数规划模型.本文提出了一种学习驱动的多目标进化算法,包括学习驱动的全局搜索和局部搜索.引入q.习作为学习引擎,以种群和非支配解集的评价作为环境反馈信号,通过不断的学习来动态指导搜索操作的选择;基于问题特征,设计了算法的状态集、动作集和奖励机制.q.习的引入能够及时感知当前搜索的状态,减少搜索操作的盲目性,提高搜索的效率.通过对仿真数据集的测试,表明所提出算法能够有效地求解分布式异构混合流水车间批量流能效调度问题.

关键词：分布式异构混合流水车间批量流调度学习驱动的多目标进化算法整数规划能效优化

来源：

维普期刊数据库

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

Higher palaeoelevation in the Baoshan Basin:Implications for landscape evolution at the southeastern margin of the Tibetan Plateau

引用

Journal of Palaeogeography 2024年第3期13卷 563-580页

作者： yong-Jiang Huang Hao-Ran Zong shi-Tao Zhang Arata Momohara Jin-Jin Hu Lin-Bo Jia yun-Heng Ji Zhe-Kun Zhou Key Laboratory for Plant Diversity and Biogeography of East Asia Kunming Institute of BotanyChinese Academy of SciencesKunming 650201Yunnan ProvinceChina College of Forestry Shandong Agricultural UniversityTai'an 271018Shandong ProvinceChina Faculty of Land Resource Engineering Kunming University of Science and TechnologyKunming 650093Yunnan ProvinceChina Graduate School of Horticulture Chiba UniversityChiba 271-8510Japan Key Laboratory of Tropical Forest Ecology Xishuangbanna Tropical Botanical GardenChinese Academy of SciencesMengla 666303Yunnan ProvinceChina

Surface uplift at the southeastern margin of the Tibetan Plateau has been widely studied,but more palaeoaltimetry data are req.ired to better understand the elevation history of this geologically complex *** this study,fossil leaves of Abies(Pinaceae),a cool-temperate element,recovered from the latest Miocene-Pliocene yangyi Formation of the southern Baoshan Basin,were used as a proxy to estimate the local *** on the regional modern altitude range(2100-4280 m)of the genus as well as regional temperature discrepancy(1.5℃)between the past and present,the palaeoelevation of the study area was calculated to be>2360 m above sea level as compared to 1670 m at *** result suggests that the southern Baoshan Basin experienced pronounced uplift prior to the time of fossil deposition,probably as a result of crustal shortening and thickening of the northern Baoshan Terrane during the *** infer that surface growth in areas south of the Dali Basin may have been greater than previously interpreted,and that a widespread plateau or plateau patches higher than 2000 m probably extended southwards into at least the Baoshan Basin by the latest *** also infer that the elevation of the southern Baoshan Basin has decreased by at least 690 m since then,in contrast to most other scenarios in which the elevation of the southeastern margin of the Tibetan Plateau has increased or remained close to modern levels since the late *** major cause of the inferred altitude decline is likely tectonic *** a transtensional graben basin,the Baoshan Basin has experienced pull-apart and base-fall movement since the late Miocene,which would reduce the altitude of its southern part located on the hanging *** erosion associated with the increased summer rainfall might also have played a role especially in reducing the local relief,although its contribution can be *** study provides one of the few palaeoelevation

关键词： Abies Lapse rate Palaeoaltimetry Surface uplift Tectonic movement Tibetan plateau

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Natural product-induced oxidative stress-synergistic anti-tumor effects of chemotherapeutic agents

引用

Traditional Medicine Research 2024年第3期9卷 10-23页

作者： Shu-Fan Wang shi-q. Dong q.an Dong Wen-Xin Lin Mei Dong Duo Liu Department of Pharmacy Harbin Medical University Cancer HospitalHarbin 150086China

Reactive oxygen species are closely related to tumor *** recent years,reactive oxygen species has become a hot spot in tumor therapy,and many natural substances in nature contain compound components with anti-tumor ***,there is a lack of discussion on the synergistic anti-tumor effects of natural products in combination with chemotherapeutic drugs through reactive oxygen *** terms“natural products”,“reactive oxygen species”,“anti-tumor”,and“chemotherapy”were used to identify the synergistic effects of natural *** conducted a systematic literature search in PubMed and Web of Science databases for relevant research articles and reviews published in recent *** systematically summarized the studies related to anti-tumor active ingredients in natural compounds in the field of reactive oxygen species in recent years.A total of 77 relevant literatures were *** them,45 literatures containing various natural products such as terpenoids,flavonoids,alkaloids,*** anti-tumor effects by regulating reactive oxygen species levels,and 32 literatures regarding adjunctive role of natural products in anti-tumor *** this study,we found that natural products exert anti-tumor effects by elevating reactive oxygen species *** provides strong theoretical support for future clinical studies.

关键词： nature products tumor reactive oxygen species combination chemotherapy oxidative stress

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：