检索结果-南通市图书馆

Illuminating functions of evolutionarily conserved long non-coding RNAs

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Science China(Life Sciences) 2024年第9期67卷 2043-2044页

作者： Ruiqiao He Fangqing Zhao Institute of Zoology Chinese Academy of SciencesBeijing 100101China Key Laboratory of Systems Health Science of Zhejiang Province Hangzhou Institute for Advanced StudyUniversity of Chinese Academy of SciencesHangzhou 310024China

Long non-coding RNAs(lnc RNAs)serve as crucial regulators of gene expression,influencing various physiological processes and disease states(Cabili et al.,2011;Ulitsky and Bartel,2013;Yao et al.,2019).Dysregulation of certain notable lnc RNAs,such as HOTAIR and MALAT1,has been implicated in a wide range of pathological processes,including tumorigenesis in various human cancers(Gupta et al.,2010;Kim et al.,2018).However,the functions of the majority of lnc RNAs remain elusive.

关键词： MALAT1 HOTAIR

Is the speed of adjusting to environmental change condition dependent?An experiment with house mice(Mus musculus)

在线全文

学校读者我要写书评

暂无评论

Current Zoology 2024年第3期70卷 350-360页

作者： Karem Lopez-Hervas Neelam Porwal Mathilde Delacoux Alexandros Vezyrakis Anja Guenther RG Behavioural Ecology of Individual Differences Max Planck Institute for Evolutionary Biology24306 PlönGermany Department of Evolutionary Biology Faculty of BiologyAdam Mickiewicz UniversityWieniawskiego 161-712 PoznańPoland Department for Collective Behaviour Max Planck Institute of Animal Behaviour78464 ConstanceGermany centre for the Advanced study of Collective Behaviour University of Konstanz78464 ConstanceGermany Animal Ecology Institute for Biochemistry and BiologyUniversity of Potsdam14469 PotsdamGermany

Environmental conditions change constantly either by anthropogenic perturbation or naturally across space and ***,a change in behavior is the frst response to changing *** fexibility can potentially improve an organism’s chances to survive and ***,we lack an understanding on the time-scale such behavioral adjustments need,how they actually affect reproduction and survival and whether behavioral adjustments are suffcient in keeping up with changing *** used house mice(Mus musculus)to test whether personality and life-history traits can adjust to an experimentally induced food-switch fexibly in adulthood or by intergenerational plasticity,that is,adjustments only becoming visible in the offspring *** lived in 6 experimental populations of semi-natural environments either on high or standard quality food for 4 *** showed previously that high-quality food induced better conditions and a less risk-prone ***,we tested whether the speed and/or magnitude of adjustment shows condition-dependency and whether adjustments incur ftness ***-history but not personality traits reacted fexibly to a food-switch,primarily by a direct reduction of reproduction and sloweddown *** whose parents received a food-switch developed a more active stress-coping personality and gained weight at a slower rate compared with their respective ***,the modulation of most traits was condition-dependent,with animals previously fed with high-quality food showing stronger *** study highlights that life-history and personality traits adjust at different speed toward environmental change,thus,highlighting the importance of the environment and the mode of response for evolutionary models.

关键词： animal personality context dependence environmental change Match-mismatch non-genetic inheritance phenotypic flexibility phenotypic plasticity

EVOLUTION AND INTERACTION OFδ-WAVES IN THE ZERO-PRESSURE GAS DYNAMICS SYSTEM

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

Acta Mathematica Scientia 2024年第5期44卷 1801-1836页

作者： Abhishek DAS K.T.JOSEPH centre for Data Science Institute of Technical Education and Research(ITER)Siksha‘O’Anusandhan(Deemed to be University)BhubaneswarOdisha751030India centre for Applicable Mathematics Tata Institute of Fundamental ResearchSharada NagarBangalore560065KarnatakaIndia

Evolution and interaction of plane waves of the multidimensional zero-pressure gas dynamics system leads to the study of the corresponding one dimensional *** this paper,we study the initial value problem for one dimensional zero-pressure gas dynamics *** the first equation is the Burgers equation and the second one is the continuity *** consider the solution with initial data in the space of bounded Borel *** we prove a general existence result in the algebra of generalized functions of *** we study in detail special solutions withδ-measures as initial *** study interaction of waves originating from initial data concentrated on two point sources and interaction with classical shock/rarefaction *** gives an understanding of plane-wave interactions in the multidimensional *** use the vanishing viscosity method in our analysis as this gives the physical solution.

关键词： zero-pressure gas dynamics delta-waves interaction of waves

Redefining biofuels:Investigating oil palm biomass as a promising cellulose feedstock for nitrocellulose-based propellant production

在线全文

学校读者我要写书评

暂无评论

Defence Technology（防务技术） 2024年第7期37卷 111-132页

作者： Khoirul Solehah binti Abdul Rahim Alinda binti Samsuri Siti Hasnawati binti Jamal Siti Aminah binti Mohd Nor Siti Nor Ain binti Rusly Hafizah binti Ariff Nur Shazwani binti Abdul Latif centre for Tropicalization(CENTROP) Defence Research InstituteUniversiti Pertahanan Nasional MalaysiaKem Sungai Besi57000 Kuala LumpurMalaysia Department of Chemistry and Biology Centre for Defence Foundation StudiesUniversiti Pertahanan Nasional MalaysiaKem Sungai Besi57000 Kuala LumpurMalaysia

This review paper explores the potential of oil palm biomass as a valuable cellulose source for the production of nitrocellulose-based propellants,contributing to the green revolution and sustainable energy *** highlights the availability of the corresponding biomass in Malaysia and in line with global studies,the chemical compositions,as well as a brief description of current technologies for converting biomass of oil palm into value added products specifically *** to achieve maximum utilization of biomass from oil palm industry for cellulose production and prospective source for nitrocellulose-based propellant are also *** methodology section outlines the pretreatment of lignocellulosic fibres,cellulose extraction,and nitrocellulose production ***,the review underscores the prospective of palm oil biomass as a sustainable cellulose source for propellant manufacturing,while acknowledging the need for further research and advancements in the field.

关键词： Biopolymer Cellulose nitrate Energetic materials Green technology Palm oil

Magnetic and electronic properties of La-doped hexagonal 4H-SrMnO3

在线全文

学校读者我要写书评

暂无评论

Chinese Physics B 2024年第1期33卷 725-729页

作者：李杰陈一楠宫诺黄欣杨志红翁亚奎 Grünberg Research centre Nanjing University of Posts and Telecommunications School of Science Nanjing University of Posts and Telecommunications

As typical strongly correlated electronic materials, manganites show rich magnetic phase diagrams and electronic structures depending on the doped carrier density. Most previous relevant studies of doped manganites rely on the cubic/orthorhombic structures, while the hexagonal structure is much less studied. Here first-principles calculations are employed to investigate the magnetic and electronic structures of La-doped 4H-SrMnO3. By systematically analyzing the two kinds of La-doped positions, our calculations predict that the doped electron with lattice distortion would prefer to form polarons, which contribute to the local magnetic phase transition, nonzero net magnetization, and semiconducting behavior. In addition, the energy gap decreases gradually with increasing doping concentration, indicating a tendency of insulator–metal transition.

关键词： manganites polaron magnetic phase transition

FAST unveils a new era in the discovery of long-period pulsars in globular clusters

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Science China(Physics,Mechanics & Astronomy) 2024年第6期67卷 185-186页

作者： Zhanwen Han International centre of Supernovae Yunnan Key LaboratoryYunnan ObservatoriesChinese Academy of SciencesKunming 650011China

Globular clusters(GC)are among the oldest celestial bodies in the Milky *** possessing millions of stars and have been going through abundant stellar interactions,GCs are futile ground for hunting for compact objects,particularly,neutron stars.A significant number of fast-spinning millisecond pulsars(MSPs)have been discovered,comprising the majority of known GC pulsars.

关键词： stars pulsars abundant

Cognitive dissonance and mindset perturbations during crisis:“ecosocio-psycho-somatic”perspectives

在线全文

学校读者我要写书评

暂无评论

World Journal of Psychiatry 2024年第2期14卷 215-224页

作者： Felix Tretter Henriette Löffler-Stastka Department of Systems Medicine and Healthcare Systems Bertalanffy Center for the Study of Systems ScienceVienna 1040Austria Department of Psychoanalysis and Psychotherapy Medical University ViennaVienna 1090Austria

Mandatory and restrictive health regulations during the corona pandemic caused psychic disorders in many people,which even led to clinically relevant mental *** the same time,there was gradually a polarization of opinions among the *** order to improve future pandemic management,an integrative understanding of these psychosocial processes therefore seems *** we start theoretically with the mental effects of inconsistencies of the information environment by referring to concepts such as the theory of cognitive *** a next step,we use the psychodynamic theory to understand the affective-motivational defense mechanisms underlying these cognitive states and ***,a broader theoretical framework of psychoanalysis seems to make sense,because self-referential processing also influences the style of *** this reason,we use a more comprehensive psychological systems theoretical framework model to integrate these different *** integrative view refers in part to basic knowledge of health psychology regarding the resistance of unhealthy ways of thinking and behaviors and the possibilities for interventions for *** then extend this model to a broader picture that also covers the relationship between men and their *** results in the perspective of a multidimensional socioecological theoretical framework,which as a heuristic reference model and related to other ecological approaches could also be helpful for various theoretical questions for public health,and could provide a better public understanding of health *** line with this perspective,we hypothesize that with regard to the coronavirus disease 2019 pandemic,the acceptance of public health narratives could be increased if a more consistent picture of the scientific descriptions and explanations of the pandemic-similar to the model proposed-could be provided,which would enable the understanding of the origin,course and countermeasur

关键词： Infodemic Affective-cognitive dissonance Systems model of the mind Socioecological model

Identifying the Active Site of Water Oxidation Catalyst Based on Defective Fe-Doped Ni Oxyhydroxide

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

CCS Chemistry 2024年第2期6卷 365-376页

作者： Yunxuan Ding Jian Du Tao Wang Licheng Sun Institute of Natural Sciences Westlake Institute for Advanced StudyHangzhou 310024 Center of Artificial Photosynthesis for Solar Fuels Department of ChemistrySchool of ScienceWestlake UniversityHangzhou 310024

Electrochemical water splitting plays a crucial role in storing sustainable energy into H2 as an ideal fuel,in which the anodic oxygen evolution reaction(OER)is the ***,Fe-doped NiOOH(Ni_(1−x)Fe_(x)OOH)is a promising OER catalyst under alkaline ***,the specific active sites responsible for their good performances remain ***,we identify a nickel-oxygen radical(Ni–O·)and an iron-oxo(Fe=O)group as two essential states for adsorbed ***,both thermochemical O–O coupling and electrochemical OER elementary steps are considered on the Ni_(1−x)Fe_(x)OOH *** mechanistic studies with a combined density functional theory simulation and experimental analysis unravel that both the Ni and Fe centers can act as the active sites for the defective Ni_(1−x)Fe_(x)OOH to catalyze OER,depending on the nature of the *** presence of Fe can benefit the stabilization of the defective surface and influence the electronic property of the nearby Ni *** work not only identifies the intrinsic active sites of Ni_(1−x)Fe_(x)OOH,but also illustrates the essential roles of defects in catalysis,which sheds light on the design of more efficient OER catalysts in the future.

关键词： defect water nucleophilic attack oxygen evolution reaction heterogeneous catalysis density functional calculations

Evaluation of soil loss severity and ecological restoration approach for sustainable agriculture in the Hindu Kush, Karakoram and Himalaya region

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

Journal of Mountain Science 2024年第5期21卷 1509-1521页

作者： Arshad ASHRAF Imran AHMAD Climate Energy and Water Research InstituteNational Agricultural Research Centre(NARC)Islamabad 44000Pakistan

Soil erosion has resulted in removal of the topsoils containing fine soil particles and plant nutrients, causing decrease in soil fertility in the Hindu Kush, Karakoram and Himalaya(HKH) region. The existing production of cereal crop grains has been reduced to one third of the potential crop grains production owing to land degradation and poor farming practices. It is necessary to assess risk of soil loss and identify appropriate controlling measures to address issues of low agriculture productivity and water insecurity in the region. In the present study, severity of soil loss was predicted using Revised Universal Loss Equation(RUSLE) and ecological measures were identified for sustainable mountain agriculture in the HKH region of Upper Indus Basin, Pakistan. Overall 62.6% area was found to have very low risk of soil loss, i.e., 100 t/(ha·yr) in about 6.8% and 7.4% areas respectively. The mean rate of soil loss was about 41.9 t/(ha·yr) in the Hindu Kush, 31.1 t/(ha·yr) in the Himalayas, 18.8 t/(ha·yr) in the Karakoram and overall 29.7 t/(ha·yr) in the three HKH ranges. As such no considerable measures have been adopted by the communities for restoration of the degraded areas except raising fruit/farm trees and supporting limited social forestry for their livelihoods. The slopes cleared for cultivation and susceptible to erosion may be stabilized through sowing/planting of multi-purpose plant species and formation of proper bench terraces. The conservation of forest ecosystem and pastures at higher elevations would help in reducing overland water flow, risk of flash flood hazard and minimizing sediment loads in the downstream. It is essential to adopt site-specific resource conservation techniques and restore possible ecosystem health for sustainable agriculture and economic developm

关键词： Climate change Erodibility Indus basin Land degradation Slope stabilization