On the pentaquark candidates p+c (4380) and p+c (4450) within the soliton picture of baryons

Using the bound state version of the topological soliton model for the baryons we show that the existence of a bound (or quasi-bound) D-soliton state leads to the possibility of having hidden charm pentaquarks with quantum numbers and masses, which are compatible with those of the candidates recently reported by the LHCb experiment. The implications of heavy quark symmetry are elaborated.Fil: Scoccola, Norberto Nerio. Universidad Favaloro. Facultad de Ingeniería y Ciencias Exactas y Naturales; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Investigación y Aplicaciones no Nucleares. Gerencia Física (CAC). Grupo de Física Teórica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Riska, D. O.. Finnish Society Of Science And Letters; FinlandiaFil: Rho, María Gabriela. Centre D'etudes de Saclay; Franci

Self-organized criticality in boson clouds around black holes

Boson clouds around black holes exhibit interesting physical phenomena through the Penrose process of superradiance, leading to black hole spin-down. Axionic clouds are of particular interest, since the axion Compton wavelength could be comparable to the Schwarzschild radius, leading to the formation of "gravitational atoms" with a black hole nucleus. These clouds collapse under certain conditions, leading to a "Bosenova". We model the dynamics of such unstable boson clouds by a simple cellular automaton and show that it exhibits self-organized criticality. Our results suggest that the evolution through the black hole Regge plane is due to self-organized criticality

Effect of age and cytoskeletal elements on the indentation-dependent mechanical properties of chondrocytes.

Articular cartilage chondrocytes are responsible for the synthesis, maintenance, and turnover of the extracellular matrix, metabolic processes that contribute to the mechanical properties of these cells. Here, we systematically evaluated the effect of age and cytoskeletal disruptors on the mechanical properties of chondrocytes as a function of deformation. We quantified the indentation-dependent mechanical properties of chondrocytes isolated from neonatal (1-day), adult (5-year) and geriatric (12-year) bovine knees using atomic force microscopy (AFM). We also measured the contribution of the actin and intermediate filaments to the indentation-dependent mechanical properties of chondrocytes. By integrating AFM with confocal fluorescent microscopy, we monitored cytoskeletal and biomechanical deformation in transgenic cells (GFP-vimentin and mCherry-actin) under compression. We found that the elastic modulus of chondrocytes in all age groups decreased with increased indentation (15-2000 nm). The elastic modulus of adult chondrocytes was significantly greater than neonatal cells at indentations greater than 500 nm. Viscoelastic moduli (instantaneous and equilibrium) were comparable in all age groups examined; however, the intrinsic viscosity was lower in geriatric chondrocytes than neonatal. Disrupting the actin or the intermediate filament structures altered the mechanical properties of chondrocytes by decreasing the elastic modulus and viscoelastic properties, resulting in a dramatic loss of indentation-dependent response with treatment. Actin and vimentin cytoskeletal structures were monitored using confocal fluorescent microscopy in transgenic cells treated with disruptors, and both treatments had a profound disruptive effect on the actin filaments. Here we show that disrupting the structure of intermediate filaments indirectly altered the configuration of the actin cytoskeleton. These findings underscore the importance of the cytoskeletal elements in the overall mechanical response of chondrocytes, indicating that intermediate filament integrity is key to the non-linear elastic properties of chondrocytes. This study improves our understanding of the mechanical properties of articular cartilage at the single cell level

Challenges and opportunities in digital health

O artigo de Leal Neto et al. tem como foco o crescimento tecnológico exponencial e as consequentes alterações nos atuais paradigmas das ciências da saúde. O texto cita vários casos em concreto, na perspectiva das “inovações disruptivas” e o seu impacto na saúde públic

How productive are academic researchers in agriculture-related sciences? The Mexican case

This paper explores the effect of commercial farmers-academic researchers linkages on research productivity in fields related to agriculture. Using original data and econometric analysis, our findings show a positive and significant relationship between intensive linkages with a small number of commercial farmers and research productivity, when this is defined as publications in ISI journals. This evidence seems contrary to other contributions that argue that strong ties with the business sector reduce research productivity and distort the original purposes of university, i.e., conducting basic research and preparing highly-trained professionals. When research productivity is defined more broadly adding other types of research outputs, the relationship is also positive and significant confirming the argument that close ties between public research institutions and businesses foster the emergence of new ideas that can be translated into innovations with commercial and/or social value. Another important finding is that researchers in public institutions produce several types of research outputs; therefore, measuring research productivity only by published ISI papers misses important dimensions of research activities.agriculture sector, research productivity, university-business sector interaction, university-industry collaboration

Land Product Validation (LPV)

This presentation will discuss Land Product Validation (LPV) objectives and goals, LPV structure update, interactions with other initiatives during report period, outreach to the science community, future meetings and next steps

Evaluasi Kesesuaian Lahan Permukiman di Kota Palopo

AbstrakSeiring berjalannya waktu pertambahan jumlah penduduk terus meningkat, mengakibatkan terjadinya perubahan penggunaan lahan. Berdasarkan data BPS Kota Palopo terjadi pertambahan penduduk sebanyak 34.628 jiwa pada tahun 2012-2021. Selain itu berdasarkan RTRW Kota Palopo Tahun 2022-2041, Kota Palopo merupakan kawasan strategis kota. Kota Palopo juga merupakan salah satu daerah yang ikut mengalami alih fungsi lahan pertanian menjadi kawasan permukiman dimana semakin bertambahnya kawasan permukiman yang tidak sejalan dengan yang seharusnya. Pembangunan permukiman di lahan tidak tepat dengan peruntukannya atau yang tidak direncanakan dapat berdampak pada penurunan kualitas lingkungan. Penelitian ini dibuat dengan tujuan untuk memahami kesesuaian lahan di Kota Palopo dan melakukan evaluasi kesesuaian lahan permukiman terhadap rencana pola ruang RTRW Kota Palopo Tahun 2022- 2041. Teknik overlay (tumpang susun) atau menindihkan berbagai parameter kesesuaian lahan yang ada serta analisis skoring untuk memberikan nilai pada sifat parameter yang digunakan dalam analisis data. Berdasarkan hasil analisis terdapat lima kelas kesesuaian lahan yakni: kawasan lindung, kawasan perkebunan terbatas/resapan air, kawasan perkebunan, kawasan perkebunan/permukiman terbatas, dan kawasan permukiman. Selain itu hasil evaluasi kesesuaian lahan permukiman terhadap rencana pola ruang RTRW Kota Palopo Tahun 2022-2041 yang dominan ialah tingkat Sangat Sesuai dengan luas sebesar 2.528,74 Ha.Kata kunci: Evaluasi; Kesesuaian Lahan; Permukiman.AbstractOver time, the population continues to increase, resulting in changes in land use. Based on BPS data for Palopo City, there was a population increase of 34,628 people in 2012-2021. In addition, based on the 2022-2041 Palopo City Spatial Planning, Palopo City is a strategic city area. The city of Palopo is also one of the areas that has experienced the conversion of agricultural land into residential areas where there is an increasing number of residential areas that are not in line with what they should be. Settlement development on land that is not in accordance with its designation or that is not planned can have an impact on reducing environmental quality. This research was made with the aim of understanding land suitability in Palopo City and evaluating the suitability of residential land against the spatial pattern plan of the Palopo City Spatial Plan for 2022-2041. The overlay technique (overlapping) or overlapping various existing land suitability parameters as well as scoring analysis to assign values to the properties of the parameters used in data analysis. Based on the results of the analysis, it can be concluded that there are five land suitability classes: protected areas, limited plantation areas/water absorption, plantation areas, limited plantation/settlement areas, and residential areas. In addition, the results of the evaluation of the suitability of residential land for the 2022-2041 spatial pattern plan for Palopo City, which is dominant, is the Very Suitable level with an area of 2,528.74 Ha.Keyword: Evaluation; Land Suitability; Settlemen

Stronger Constraints on the Evolution of the MBH−σ∗M_{\rm{BH}}-\sigma_* Relation up to z∼0.6z\sim0.6

We revisit the possibility of redshift evolution in the $M_{\rm{BH}}-\sigma_*$ relation with a sample of 22 Seyfert 1 galaxies with black holes (BHs) in the mass range $10^{6.3}-10^{8.3}~M_\odot$ and redshift range $0.03<z<0.57$ with spectra obtained from spatially resolved Keck/Low-Resolution Imaging Spectrometer observations. Stellar velocity dispersions were measured directly from the Mg Ib region, taking into consideration the effect of Fe II contamination, active galactic nucleus (AGN) dilution, and host-galaxy morphology on our measurements. BH masses are estimated using the H$\beta$ line width, and the luminosity at 5100 \overset{\lower.5em\circ}{\mathrm{A}} is estimated from surface brightness decomposition of the AGN from the host galaxy using high-resolution imaging from the Hubble Space Telescope. Additionally, we investigate the use of the [O III]$\lambda5007$ emission line width as a surrogate for stellar velocity dispersion, finding better correlation once corrected for Fe II contamination and any possible blueshifted wing components. Our selection criteria allowed us to probe lower-luminosity AGNs and lower-mass BHs in the non-local universe than those measured in previous single-epoch studies. We find that any offset in the $M_{\rm{BH}}-\sigma_*$ relation up to $z\sim0.6$ is consistent with the scatter of local BH masses, and address the sources of biases and uncertainties that contribute to this scatter.Comment: Accepted 14 May 2019 for publication in ApJ. 42 pages, 12 figures, 4 tables. Corrected for typographical error