Abstract:
:Natural arches, pillars and other exotic sandstone formations have always been attracting attention for their unusual shapes and amazing mechanical balance that leave a strong impression of intelligent design rather than the result of a stochastic process. It has been recently demonstrated that these shapes could have been the result of the negative feedback between stress and erosion that originates in fundamental laws of friction between the rock's constituent particles. Here we present a deeper analysis of this idea and bridge it with the approaches utilized in shape and topology optimisation. It appears that the processes of natural erosion, driven by stochastic surface forces and Mohr-Coulomb law of dry friction, can be viewed within the framework of local optimisation for minimum elastic strain energy. Our hypothesis is confirmed by numerical simulations of the erosion using the topological-shape optimisation model. Our work contributes to a better understanding of stochastic erosion and feasible landscape formations that could be found on Earth and beyond.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Ostanin I,Safonov A,Oseledets Idoi
10.1038/s41598-017-17777-1subject
Has Abstractpub_date
2017-12-11 00:00:00pages
17301issue
1issn
2045-2322pii
10.1038/s41598-017-17777-1journal_volume
7pub_type
杂志文章abstract::Nasopharyngeal carcinoma (NPC) is a highly metastatic cancer that is consistently associated with Epstein-Barr virus (EBV) infection. In this study, we identify for the first time a role for monoamine oxidase A (MAOA) in NPC. MAOA is a mitochondrial enzyme that catalyzes oxidative deamination of neurotransmitters and ...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-020-63150-0
更新日期:2020-04-09 00:00:00
abstract::In this work, we experimentally investigate near-field capacitive coupling between a pair of single-gap split ring resonators (SRRs) in a terahertz metamaterial. The unit cell of our design comprises of two coupled SRRs with the split gaps facing each other. The coupling between two SRRs is examined by changing the ga...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-018-34942-2
更新日期:2018-11-13 00:00:00
abstract::Upon illumination, a dielectric microsphere (μS) can generate a photonic nanojet (PNJ), which plays a role in the super-resolution imaging of a sample placed in the μS's immediate proximity. Recent microscopy implementations pioneered this concept but, despite the experimental characterization and theoretical modeling...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-018-33604-7
更新日期:2018-10-12 00:00:00
abstract::The global problem of unowned domestic cats, driven by their phenomenal reproductive success, carries significant economic, animal welfare and biodiversity costs. Desexing owned cats prior to puberty prevents unwanted litters that contribute to unowned cat populations. The prevalence and predictors of desexing, and th...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-020-79513-6
更新日期:2021-01-18 00:00:00
abstract::We demonstrate a tool for quantitative measurements in the extreme ultraviolet (EUV) spectral region measuring spatially resolved atomic ionization products at the focus of an EUV beam. The ionizing radiation is a comb of the 11(th)-15(th) harmonics of a Ti:Sapphire femtosecond laser beam produced in a Xenon gas jet. ...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep21556
更新日期:2016-02-12 00:00:00
abstract::Vitamin D and parathyroid hormone (PTH) regulate mineral metabolism and are required to maintain calcium levels. Vitamin D deficiency is common, particularly during pregnancy, and has been associated with hypertensive disorders of pregnancy. We sought to determine whether maternal 25(OH)D, PTH and calcium concentratio...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-018-37600-9
更新日期:2019-02-04 00:00:00
abstract::The N-methyl-D-aspartate subfamily of ionotropic glutamate receptors (NMDARs) is well known for its important roles in the central nervous system (CNS), e.g. learning and memory formation. Besides the CNS, NMDARs are also expressed in numerous peripheral tissues including the pancreas, kidney, stomach, and blood cells...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-019-46496-y
更新日期:2019-07-11 00:00:00
abstract::The evolution of bone tissue quantity and quality in contact with the surface of orthopedic and dental implants is a strong determinant of the surgical outcome but remains difficult to be assessed quantitatively. The aim of this study was to investigate the performance of a quantitative ultrasound (QUS) method to meas...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-020-78806-0
更新日期:2020-12-15 00:00:00
abstract::Enhancement of endogenous neurogenesis after ischemic stroke may improve functional recovery. We previously demonstrated that medium B, which is a combination with epidermal growth factor (EGF) and fibronectin, can promote neural stem/progenitor cell (NSPC) proliferation and migration. Here, we showed that medium B pr...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-020-63598-0
更新日期:2020-04-20 00:00:00
abstract::Microorganisms in vertebrate guts have been recognized as important symbionts influencing host life. However, it remains unclear about the gut microbiota in long-distance migratory Anseriformes herbivores, which could be functionally important for these wetland-dependent animals. We collected faeces of the greater whi...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep32655
更新日期:2016-09-07 00:00:00
abstract::Outer hair cells in the cochlea have a unique motility in their cell body based on mechanoelectric coupling, with which voltage changes generated by stimuli at their hair bundles drive the cell body and, in turn, it has been assumed, amplifies the signal. In vitro experiments show that the movement of the charges of t...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-017-12411-6
更新日期:2017-09-21 00:00:00
abstract::Neutrophils are the first immune cells to kill invading microbes at sites of infection using a variety of processes, including the release of proteases, phagocytosis and the production of neutrophil extracellular traps (NETs). NET formation, or NETosis, is a specific and highly efficient process, which is induced by a...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-019-53058-9
更新日期:2019-11-12 00:00:00
abstract::Methylation of histone H3-lysine 9 (H3K9) and H3K27 by the methyltransferase G9a and polycomb repressive complex 2 (PRC2) inhibits transcription of target genes. A crosstalk between G9a and PRC2 via direct physical interaction has been shown recently. Here, we demonstrate an alternative mechanism by which G9a promotes...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep18709
更新日期:2015-12-21 00:00:00
abstract::Core flood and field tests have demonstrated that decreasing injection water salinity increases oil recovery from sandstone reservoirs. However, the microscopic mechanism behind the effect is still under debate. One hypothesis is that as salinity decreases, expansion of the electrical double layer decreases attraction...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep09933
更新日期:2015-04-22 00:00:00
abstract::Sweet sorghum bagasse (SSB) is a promising raw material for silage fermentation due to its high residual nutritive, but the efficient fermentation strategy of SSB has not been reported yet. This study evaluated the effects of microbial inoculant on the fermentation quality, chemical composition and microbial community...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-020-57628-0
更新日期:2020-01-21 00:00:00
abstract::The Sinorhizobium meliloti (S. meliloti) strain CCNWSX0020 displayed tolerance to high levels exposures of multiple metals and growth promotion of legume plants grown in metal-contaminated soil. However, the mechanism of metal-resistant strain remains unknown. We used five P1B-ATPases deletions by designating as ∆copA...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep29355
更新日期:2016-07-05 00:00:00
abstract::Flotation of small solid objects and liquid droplets on water is critical to natural and industrial activities. This paper reports the floating mechanism of liquid marbles, or liquid droplets coated with hydrophobic microparticles. We used X-ray computed tomography (XCT) to acquire cross-sectional images of the floati...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep21777
更新日期:2016-02-23 00:00:00
abstract::The primary hurdle for diagnosis of some diseases is the long incubation required to culture and confirm the presence of bacteria. The concept of using microbial VOCs as "signature markers" could provide a faster and noninvasive diagnosis. Finding biomarkers is challenging due to the specificity required in complex ma...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-019-47907-w
更新日期:2019-08-20 00:00:00
abstract::Quartz is a common phase in high-silica igneous rocks and is resistant to post-eruptive alteration, thus offering a reliable record of magmatic processes in silicic magma systems. Here we employ the 75 ka Toba super-eruption as a case study to show that quartz can resolve late-stage temporal changes in magmatic δ18O v...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep40624
更新日期:2017-01-25 00:00:00
abstract::Animal gut harbors diverse microbes that play crucial roles in the nutrition uptake, metabolism, and the regulation of host immune responses. The intestinal microbiota homeostasis is critical for health but poorly understood. Probiotics Paracoccus marcusii DB11 and Bacillus cereus G19, and antibiotics florfenicol did ...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-017-05312-1
更新日期:2017-07-06 00:00:00
abstract::Within year individual variation in the timing of seasonal reproduction within wild bird populations in highly seasonal environments can be pronounced, but the molecular and physiological mechanisms responsible for this variation are unclear. We investigated the relationship between Clock gene poly-Q length, activatio...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-017-15064-7
更新日期:2017-11-03 00:00:00
abstract::This study aimed to investigate whether single nucleotide polymorphisms (SNPs) of five NLR family genes (NOD1, NOD2, NLRP1, NLRP3 and CIITA) are associated with Behcet's disease (BD) in a Chinese Han population. The study was carried out in 950 BD patients and 1440 controls for 19 SNPs in the selected NLR genes. In th...
journal_title:Scientific reports
pub_type: 临床试验,杂志文章,多中心研究
doi:10.1038/srep20098
更新日期:2016-02-01 00:00:00
abstract::The fusion of villous cytotrophoblasts into the multinucleated syncytiotrophoblast is critical for the essential functions of the mammalian placenta. Using RNA-Seq gene expression and quantitative protein expression, we identified genes and their cognate proteins which are coordinately up- or down-regulated in two cel...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-018-23379-2
更新日期:2018-03-23 00:00:00
abstract::Atropine eye drops and myopic retinal defocus each slow progression of myopia (short-sight). They also cause thickening of the choroid, and it has been suggested that the thickening is a precursor for reduced eye growth and slowed myopia progression. We investigated whether choroidal thickening due to optical defocus ...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-020-75342-9
更新日期:2020-10-27 00:00:00
abstract::The extent to which the details of past experiences are retained or forgotten remains controversial. Some studies suggest massive storage while others describe memories as fallible summary recreations of original events. The discrepancy can be ascribed to the content of memories and how memories are evaluated. Many st...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-018-33792-2
更新日期:2018-11-12 00:00:00
abstract::Thymocyte and T cell trafficking relies on signals initiated by G-protein coupled receptors. To address the importance of the G-proteins Gαi2 and Gαi3 in thymocyte and T cell function, we developed several mouse models. Gαi2 deficiency in hematopoietic progenitors led to a small thymus, a double negative (DN)1/DN2 thy...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-017-04537-4
更新日期:2017-06-23 00:00:00
abstract::High-quality, 25 nm octahedral-shaped Fe3O4 magnetite nanocrystals are epitaxially grown on 9 nm Au seed nanoparticles using a modified wet-chemical synthesis. These Fe3O4-Au Janus nanoparticles exhibit bulk-like magnetic properties. Due to their high magnetization and octahedral shape, the hybrids show superior in vi...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-018-29618-w
更新日期:2018-07-26 00:00:00
abstract::Radopholus similis is an important migratory endoparasitic nematode, severely harms banana, citrus and many other commercial crops. Little is known about the molecular mechanism of infection and pathogenesis of R. similis. In this study, 64761 unigenes were generated from eggs, juveniles, females and males of R. simil...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-019-42724-7
更新日期:2019-04-18 00:00:00
abstract::Chromobox 6 (CBX6) is a subunit of Polycomb Repressive Complex 1 (PRC1) that mediates epigenetic gene repression and acts as an oncogene or tumor suppressor in a cancer type-dependent manner. The specific function of CBX6 in breast cancer is currently undefined. In this study, a comprehensive analysis of The Cancer Ge...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-018-36560-4
更新日期:2019-01-17 00:00:00
abstract::Male infertility due to spermatogenesis defects affects millions of men worldwide. However, the genetic etiology of the vast majority remains unclear. Here we describe three men with primary infertility due to multiple morphological abnormalities of the sperm flagella (MMAF) from two unrelated Han Chinese families. We...
journal_title:Scientific reports
pub_type: 临床试验,杂志文章
doi:10.1038/s41598-019-52436-7
更新日期:2019-11-01 00:00:00