A Survey of the Stony Coral Community Composition of Pompano Ledge, Broward County, Florida, with a Preliminary Evaluation of the Effectiveness of Mooring Buoys in Reducing Coral Damage

Stony corals of Pompano Ledge, First Reef, Broward County, Florida were sampled in situ using a new reef assessment method. The circular-radial method was used to assess the effectiveness of mooring buoys in reducing damage to reefs. Data will be part of a long-term monitoring study of·buoy impacts. The parameter of recent injury was used to provide preliminary information on buoy effectiveness. Results were as follows: approximately 6% of the study area was covered by stony corals, with an average of 3 colonies per square meter. Diversity based on abundance (H\u27n) was 1 .7, and diversity based on relative coverage (H\u27c) was 1.1. Evenness based on abundance (J\u27n) was nearly .8, and evenness based on relative coverage (J\u27 c) was .5. Approximately 6% of all colonies surveyed were observed under the shelter of ledges or overhangs. An average of 2% of colonies were observed to be recently injured in the Winter, compared with 6% in the Summer. Twenty-nine species of scleractinian corals were observed, 26 of which were present in sample areas. Montastrea cavernosa dominated stony coral coverage, and Siderastrea spp. and M. cavernosa were the most abundant. Mooring buoys appear to be an effective management tool for minimizing damage to corals on Pompano Ledge. The percentage of corals that had been recently injured was lower in the buoyed site (p = .082) even though the buoyed site was more heavily visited by both boats and divers . Future studies will be able to further assess buoy impacts by noting any changes in coral population parameters. The buoys have only been in place two years, so it will be interesting to see if the coral communities of the two sites begin to diverge in the future

Unintentional high density p-type modulation doping of a GaAs/AlAs core-multi-shell nanowire

Achieving significant doping in GaAs/AlAs core/shell nanowires (NWs) is of considerable technological importance but remains a challenge due to the amphoteric behavior of the dopant atoms. Here we show that placing a narrow GaAs quantum well in the AlAs shell effectively getters residual carbon acceptors leading to an \emph{unintentional} p-type doping. Magneto-optical studies of such a GaAs/AlAs core multi-shell NW reveal quantum confined emission. Theoretical calculations of NW electronic structure confirm quantum confinement of carriers at the core/shell interface due to the presence of ionized carbon acceptors in the 1~nm GaAs layer in the shell. Micro-photoluminescence in high magnetic field shows a clear signature of avoided crossings of the $n=0$ Landau level emission line with the $n=2$ Landau level TO phonon replica. The coupling is caused by the resonant hole-phonon interaction, which points to a large 2D hole density in the structure.Comment: just published in Nano Letters (http://pubs.acs.org/doi/full/10.1021/nl500818k

Avalanche amplification of a single exciton in a semiconductor nanowire

Interfacing single photons and electrons is a crucial ingredient for sharing quantum information between remote solid-state qubits. Semiconductor nanowires offer the unique possibility to combine optical quantum dots with avalanche photodiodes, thus enabling the conversion of an incoming single photon into a macroscopic current for efficient electrical detection. Currently, millions of excitation events are required to perform electrical read-out of an exciton qubit state. Here we demonstrate multiplication of carriers from only a single exciton generated in a quantum dot after tunneling into a nanowire avalanche photodiode. Due to the large amplification of both electrons and holes (> 10^4), we reduce by four orders of magnitude the number of excitation events required to electrically detect a single exciton generated in a quantum dot. This work represents a significant step towards single-shot electrical read-out and offers a new functionality for on-chip quantum information circuits

Постать Тараса Шевченка в рецепції Ліни Костенко

У статті розглядається поетика творення Ліною Костенко образу Кобзаря крізь призму власного "я", через пережиті відчуття поета-шістдесятника, що своєю проекцією нагадують душевні терзання великого поета.В статье рассмотрена поэтика создания Линой Костенко образа Тараса Шевченко сквозь призму собственного "я", через пережитые ощущения поэта-шестидесятника, своей проекцией напоминающие душевные терзания великого поэта.The article deals with the problem of the poetics creation by Lina Kostenko Taras Shevchenko’ image through a prism her own mind, through sensations of the poet-sixtier, by the projection reminding sincere torments the great poet is considered

Psychologie der Kreativität

Ein kleiner Streifzug durch die psychologische Kreativitätsforschung befasst sich mit den Möglichkeiten der Erfassung kreativer Prozesse, ihrer Manifestation, den Determinanten, der Frage nach der Notwendigkeit zu kreativem Denken und schließlich Erkenntnissen darüber, wie kreatives Denken gefördert werden kann

A Single Center Exploratory Survey of Patients and Nurses on post-Surgical Oral Opioid Delivery Through Patient-Controlled Analgesia

Daniyal H Mirza,1,* Lucy Zha,1,* Claudia See,2 Isabella N Paoletti,1 Feng Dai,3 Mark Hocevar,4 Jinlei Li,5 Daniel Wiznia6 1Yale College, New Haven, CT, 06520-8241, USA; 2Yale School of Medicine, New Haven, CT, 06520, USA; 3Yale Center for Analytical Sciences, Yale School of Public Health, New Haven, CT, 06520, USA; 4Warren Alpert Medical School of Brown University, Providence, RI, 02903, USA; 5Department of Anesthesiology, Yale University School of Medicine, New Haven, CT, 06510, USA; 6Department of Orthopedics and Rehabilitation, Yale School of Medicine, New Haven, CT, USA; Department of Mechanical Engineering & Materials Science, School of Engineering & Applied Science, Yale University, New Haven, CT, USA*These authors contributed equally to this workCorrespondence: Jinlei Li, Department of Anesthesiology, Yale University School of Medicine, 20 York Street, New Haven, CT, 06510, USA, Tel +1 917-601-6828, Email [email protected]: The most common route of opioid delivery is nurse-administered pills. However, there are numerous challenges such as nursing burden, opioid diversion, medication delay, and patient dissatisfaction. In this study, we conducted two surveys, first to assess patients’ and nurses’ opinions on the current administration of opioids in pill form, followed by their attitudes towards an innovative concept of oral medication delivery based on a medical device currently undergoing research and development within the University, patient-controlled dispenser and deactivator (PCDD) that allows patients to self-administer liquid oral opioids on demand based on physician prescription.Methods: Questionnaires were developed, verified and deployed to assess nurse and post-surgical patient opinions on the current administration of opioids in pill form, as well as the proposed new concept of patient -controlled administration of oral liquid medication via an illustration of PCDD, from September 2022 through July 2023 at a major academic tertiary care center. Quantitative and qualitative data were collected from postoperative patients and nurses from surgical specialties including General Surgery, Surgical Oncology, Trauma Surgery, Orthopedics, and Neurosurgery.Results: Forty-three patients and 53 nurses were interviewed. Seventy percent of patients frequently called nurses for pain medication post-surgery 1– 4 times daily, and 32% of patients were told each day by nurses that they could not receive medication because they were not due yet. Medication delay caused 24% of patients to worry about nursing availability for medication delivery. Likewise, nurses reported that half of patients receive delayed medication (22 minutes median delay time) and half of nursing time was spent administering pain medication. Nurses expressed moderate satisfaction with their current delivery of medication (median satisfaction score 6.5 out of 10). When being introduced to the concept of PCDD via a product illustration, 15% of patients said that they prefer liquid medication and 51% said they prefer PCDD or were interested in trying it.Conclusion: Nurse-administered pills are a common but suboptimal method for postoperative pain management. Based on patient and nurse feedback, patient controlled self-administered liquid oral opioid delivery is conceptually innovative, practically viable and potentially a preferred alternative for timely and less nurse-exhaustive pain management.Keywords: pain management, opioid, survey, nursing, patient-controlled analgesia pum

Building‐Block Size Mediates Microporous Annealed Particle Hydrogel Tube Microenvironment Following Spinal Cord Injury

Spinal cord injury (SCI) is a life-altering event, which often results in loss of sensory and motor function below the level of trauma. Biomaterial therapies have been widely investigated in SCI to promote directional regeneration but are often limited by their pre-constructed size and shape. Herein, the design parameters of microporous annealed particles (MAPs) are investigated with tubular geometries that conform to the injury and direct axons across the defect to support functional recovery. MAP tubes prepared from 20-, 40-, and 60-micron polyethylene glycol (PEG) beads are generated and implanted in a T9-10 murine hemisection model of SCI. Tubes attenuate glial and fibrotic scarring, increase innate immune cell density, and reduce inflammatory phenotypes in a bead size-dependent manner. Tubes composed of 60-micron beads increase the cell density of the chronic macrophage response, while neutrophil infiltration and phenotypes do not deviate from those seen in controls. At 8 weeks postinjury, implantation of tubes composed of 60-micron beads results in enhanced locomotor function, robust axonal ingrowth, and remyelination through both lumens and the inter-tube space. Collectively, these studies demonstrate the importance of bead size in MAP construction and highlight PEG tubes as a biomaterial therapy to promote regeneration and functional recovery in SCI