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Azimuthal angular correlations in lepton pair production in ultra-peripheral heavy ion collisions
Get PDFThe coherent photons induced by relativistic heavy ions are highly linearly polarized, in close analogy to the linear polarization of gluons in a large nucleus. We proposed to measure the photon polarization through azimuthal asymmetries in dilepton production in ultra-peripheral collisions. Our prediction for the asymmetries were soon confirmed by the STAR experiment with high precision. We refined our analysis recently by including the final state soft photon radiation effect beyond the double leading logarithm approximation. The azimuthal asymmetries and acoplanarity at relatively high transverse momentum provide unique opportunities to test the resummation formalism thanks to the extremely high photon flux in UPCs. Our results clearly show the feasibility to access the sub-leading resummation effects in UPCs at the RHIC and LHC
Challenges in Translational Benign Prostatic Hyperplasia Research
Get PDFBenign Prostate Hyperplasia (BPH) is a common condition of aging that affects up to 80% of men in their lives. It requires medical and often surgical management. Despite its prevalence, molecular breakthroughs in the last 20 years have been lacking. In the following article, we outline the challenges and limitations within existing BPH research to frame the major issues for future researchers
The Safety and Protective Effects of Intravitreal Injection of Human Adipose-Derived Mesenchymal Stem Cells in a Rat Model of Retinal Ischemia/Reperfusion Injury
Get PDFPurpose: The purpose of this study was to evaluate the safety and protective effects of intravitreal injection of human adipose-derived mesenchymal stem cells (ADMSCs) in a rat model of retinal ischemia/reperfusion (I/R) injury induced by anterior chamber perfusion.
Methods: Two weeks after induction of I/R injury, rats received a single intravitreal injection of human ADMSCs at doses of 2×10⁴ cells or 5×10⁴ cells suspended in 3 μL saline. Control rats received 3 μL saline or no injection. Retinal and optic nerve changes were assessed at two weeks after injection using immunofluorescence, hematoxylin and eosin staining, toluidine blue staining, and polymerase chain reaction to evaluate inflammation-related and neurotrophic factors.
Results: Intravitreal injection of human ADMSCs significantly reduced the number of apoptotic retinal ganglion cells after I/R injury, preserved the ganglion cell layer, and increased expression of neurotrophic factors such as brain-derived neurotrophic factor and insulin-like growth factor 1. The high-dose group (receiving 5×10⁴ cells) demonstrated superior neuroprotective effects compared to the low-dose group (receiving 2×10⁴ cells) as evidenced by less retinal ganglion cell apoptosis. In addition, histopathological analysis revealed localized tissue remodeling and increased microglial infiltration, particularly in the low-dose group.
Conclusion: The safety of intravitreal human adipose-derived mesenchymal stem cell transplantation requires further investigation, particularly with regard to potential proliferative responses and their long-term effects. In addition, the optimal dosage of adipose-derived mesenchymal stem cells needs to be explored to balance therapeutic efficacy and minimize adverse outcomes. which was associated with structural retinal damage. In addition, the high-dose group exhibited a potential risk of inflammation or maladaptive changes.
On Chilean Acting Training; Interview with Cristian Lagreze
No full textSince the 1980s, European techniques have had a significant impact on actor training in Chile; however, with the restoration of democracy in the 1990s, actor training started to change. Prominent professionals such as Cristian Lagreze, who received his training outside, have brought fresh perspectives to the Chilean setting. Lagreze talks about his experience as an actor in this interview, beginning at the University of Chile. He notes that the training process, which is moulded by emotional and physical conditioning particular to the sociological and cultural dynamics of today, aids trainers in developing a sense of identity and community. Students\u27 relationships with their bodies in training are being impacted by modern challenges like the effects of technology, capitalist pressures, and the increased awareness of gender and body politics. Lagreze also draws attention to the difficulties caused by the commercialisation of education, which makes students feel like customers. His observations highlight the difficulties involved in actor training in Chile and show how instructors must strike a balance between teaching conventional methods and the changing demands of contemporary actors
Representaciones de la dictadura chilena a 50 años: dramaturgias y trauma psicosocial
No full textIn 2023, Chile commemorated the 50th anniversary of the coup d\u27état that installed a bloody civil and military dictatorship that lasted 17 years, whose psychosocial and political consequences are still felt today. In the run-up to this commemoration, we asked ourselves the question of how the dictatorship has been represented in the theater scene over the last 50 years: what have been the themes and characters; what role has theater played in relation to the dictatorship; how the Chilean theater scene has represented the scene of the traumatic that the dictatorship installed.
We thus developed a research, positioned in 2022, with the objective of analyzing how the Chilean civil and military dictatorship has been represented and symbolized in the Chilean theater scene since the coup d\u27état to date. After compiling from diverse sources a large number of plays premiered during 50 years, a corpus of plays was selected, which were grouped by decades, considering the date of their premiere. The playscripts of each group of plays were analyzed in an attempt to reconstruct recurrences and diversities in their representation of the dictatorship along three axes: the privileged theme brought to the stage; the playwriting strategies implemented; and the psychosocial meanings of what was represented. In this paper, we present the first results of this research and its projections.En 2023, Chile conmemoró 50 años del golpe de estado que instaló una cruenta dictadura civil y militar que se extendió por 17 años, cuyas consecuencias psicosociales y políticas se perciben hasta hoy. En la antesala de esta conmemoración, nos planteamos la pregunta acerca de cómo la dictadura ha sido representada en la escena teatral en los últimos 50 años: cuáles han sido los temas y los personajes; qué función ha cumplido el teatro con relación a la dictadura; cómo la escena teatral chilena ha representado la escena de lo traumático que la dictadura instaló.
Desarrollamos así una investigación, posicionadas en 2022, con el objetivo de analizar cómo la dictadura civil y militar chilena ha sido representada y simbolizada en la escena teatral chilena desde el golpe de estado a la fecha. Luego de recopilar desde fuentes diversas una gran cantidad de obras estrenadas durante 50 años, se seleccionó un corpus de obras, las que fueron agrupadas por decenios, considerando la fecha de su estreno. Se analizaron las dramaturgias de cada grupo de obras intentando reconstruir recurrencias y diversidades de su representación de la dictadura en torno a 3 ejes: el tema privilegiado llevado a escena; las estrategias dramatúrgicas implementadas; y los significados psicosociales de lo representado. En este escrito, presentamos los primeros resultados de esta investigación y sus proyecciones
Notes on the genera Ammobatoides and Melitturga in Europe (Hymenoptera: Apoidea)
Get PDFThe bee genus Ammobatoides Radoszkowski (Apidae) is a species-poor Old World group that predominantly parasitises the pollen-collecting genus Melitturga Latreille (Andrenidae). Nine species of Ammobatoides are currently recognised, but due to the rarity of most species, four are only known from a single sex. Examination of material from Greece has yielded the previously unknown female of Ammobatoides okalii Kocourek, a species previously known only from its male holotype. The suspected host is Melitturga spinosa Morawitz. Revised identification keys for Ammobatoides and Melitturga in Europe are provided, along with a clarification of the statuses and distributions of Melitturga praestans Giraud and Melitturga syriaca Friese
Exploring Intercollegiate Adaptive Athletics Program Structures: An Application of Open Systems Theory
No full textThe purpose of this study was to explore intercollegiate adaptive athletics program structures in the United States. As athletics programs can be seen as open systems, an open systems model of sport organizations was used to guide the study. Semi-structured interviews were conducted with seven participants associated with intercollegiate adaptive athletics programs. A qualitative description design was used to gain a foundational understanding of program structures based on the programs’ environments, inputs, processes, and outputs. Findings suggest intercollegiate adaptive athletics program structures are highly varied and complex open systems that are closely intertwined with their environments and have observable inputs, process, and outputs. This study offers foundational knowledge about existing program structures and indicates that intercollegiate adaptive athletics programs can be understood as open systems. Implications for future research and practice are discussed
Acquired adermatoglyphia associated with sporadic inclusion body myositis
Get PDFA 70-year-old male patient with inclusion body myositis presented to dermatology clinic for evaluation of loss of fingerprints. Eight years previously, he had fingerprints taken for a government permit. Inclusion body myositis (IBM) was diagnosed four years later after the patient developed muscle weakness in his left lower extremity and right upper extremity and was confirmed by muscle biopsy. The patient also reported loss of skin lines that gave his fingers a shiny appearance, most prominently on the left hand, which he had associated the inclusion body myositis due to weakness in this hand. He was unable to renew the government permit due to an inability for the machine to read his fingerprints. Upon exam, the fingers of his hands, most prominently the left 3rd and 4th digits, had a smooth texture and glossy appearance circumferentially associated with diminution of skin lines and palmar dermatoglyphs. Workup for connective tissue and other autoimmune diseases was negative. This case suggests asymmetric adermatoglyphia may distinguish a subset of patients with IBM.
