4,941 research outputs found

    Knowledge and Awareness of STD Risk Perception of MSM in Philadelphia

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    There has been a rise in incidence of sexually transmitted diseases (STDs), in particularly in men who have sex with men (MSM). MSM were 106x as likely to have primary or secondary syphilis as compared to men who exclusively had sex with women (MSW). MSM account for large portion of antimicrobial resistant gonorrhea diagnoses and saw a 151% increase in incidence while compared to a 31.7% increase in MSW. This study examines what MSM in Philadelphia know about transmission methods and outcomes of syphilis and gonorrhea to better understand MSM risk perception of these diseases. A multiple-choice test was distributed to a total of 87 men in Philadelphia at the William Way center as well as at men who visited the Thomas Jefferson booth at Outfest on October 7th, 2018. The survey found that only about half of men knew about symptoms of the diseases, while a third knew about long term consequences of syphilis. At least 75% of men were aware of the behaviors that can result in transmission, though fewer were aware that oral sex is an infection method. The majority of men knew what PrEP is and that it does not prevent syphilis, but only a fifth of responders took the drug. Education can be focused to educate MSM about symptoms and long-term consequences of syphilis and gonorrhea. Future studies can investigate why MSM are not taking PrEP despite knowing about it. Through education, safe sex behaviors will be encouraged and halt the rising rates of STDs

    Coordination exercise and postural stability in elderly people: effect of Tai Chi Chuan

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    Objective: To evaluate the effects of coordination exercise on postural stability in older individuals by Chinese shadow boxing, Tai Chi Chuan (TCC). Design: Cross-sectional study. Setting: Research project in a hospital-based biomechanical laboratory. Participants: The TCC group (n ϭ 25) had been practicing TCC regularly for 2 to 35 years. The control group (n ϭ 14) included healthy and active older subjects. Intervention Results: In static postural control, the results showed no differences between the TCC or control group in the more simple conditions, but in the more complicated SOT (eyes closed with sway surface, sway vision with sway surface), the TCC group had significantly better results than the control group. The TCC group also had significantly better results in the rhythmic forward-backward weight-shifting test. Duration of practice did not seem to affect the stability of elder people. Conclusion: The elderly people who regularly practiced TCC showed better postural stability in the more challenged conditions than those who do not (eg, the condition with simultaneous disturbance of vision and proprioception). TCC as a coordination exercise may reduce the risk of a fall through maintaining the ability of posture control. Key Words: Balance; Elderly; Exercise; Posture; Rehabilitation; T'ai Chi. © by the American Congress of Rehabilitation Medicine and the American Academy of Physical Medicine and Rehabilitation P REVENTIVE CARE for the elderly has received increased attention because of the rapid increase in the elderly population and their disproportionately high medical expenses. 1 Falls are a major cause of morbidity, hospitalization, and mortality among older people. 2-4 Approximately 30% of those over 65 years of age sustain a fall, with about half of them having multiple events. About 10% to 15% of falls result in serious injuries and in soft tissue injuries. Many studies show that impaired balance and decreased lower extremity strength are important risk factors in the loss of physical functioning and the occurrence of falls in older adults. Tai Chi Chuan (TCC) is a traditional Chinese conditioning exercis

    Medical Student Perspectives on Opioid Use Disorders: An Innovative MAT Waiver Training Integration during IM Clerkships

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    The opioid epidemic in the US has become a major issue in healthcare. In 2017, there was an estimated 72,306 drug overdose related deaths and Emergency Departments (ED) nationally saw a 30% increase in opioid related overdoses. Innovative programs can help ensure patients are offered optimal treatment options. Most primary care physicians self-report they lack the skills to identify and appropriately treat substance abuse disorders (SUDs). Studies have suggested that the best solution is to improve medical school curricula, which translates to better educated future physicians. Unfortunately, due to timing and exposure constraints, most medical school programs do not provide the necessary information to successfully manage and treat SUDs in practice. To prescribe buprenorphine, an 8-hour Medication Assisted Treatment (MAT) training must be completed. Only 35,604 of the approximate 800,000 US physicians (\u3c3%) are registered to prescribe buprenorphine. We implemented an innovative approach to provide students with the skills to understand how to prescribe buprenorphine and build confidence to medically manage opioid use disorders in the future. By completing the training students will be eligible for a their MAT waiver upon obtaining their permanent license. Prior to integrating the training into the internal medicine clerkship, a preliminary study similar in nature was performed that focused on first and second year medical students perspectives. The results were analyzed and presented, and based on the positive results of the study, it was decided to implement the study into the internal medicine clerkship during the third year of medical school

    Evaluating Structural, Chlorophyll-Based and Photochemical Indices to Detect Summer Maize Responses to Continuous Water Stress

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    his study evaluates the performance of structural, chlorophyll-based, and photochemical indices to detect maize water status and to assess production based on five years of field experiments (2013–2017) during the primary growth stages. We employed three categories of indicators, including water condition and productive and thermal indicators, to quantify the responses of summer maize under continuous water stress from drought to waterlogging conditions. Furthermore, we adopted several spectral indices to assess their sensitivity to three categories of metrics. The results showed the association is the best between the treatment level and Leaf Water Content (LWC). The waterlogging treatment influenced Leaf Water Potential (LWP) in moderate drought stress. Severe drought stress caused the strongest reduction in productivity from both Leaf Area Index (LAI) and chlorophyll content. In terms of sensitivity of various indices, red-edge-position (REP) was sensitive to maize water conditions LWP, LAI and chlorophyll content. Photochemical Reflectance Index (PRI) and Normalized Difference Vegetation Index (NDVI) were the most and second most sensitive indices to productive indicators, respectively. The results also showed that no indices were capable of capturing the information of Crop Water Stress Index (CWSI)

    Novel Inhibitor Design for Hemagglutinin against H1N1 Influenza Virus by Core Hopping Method

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    The worldwide spread of H1N1 avian influenza and the increasing reports about its resistance to the current drugs have made a high priority for developing new anti-influenza drugs. Owing to its unique function in assisting viruses to bind the cellular surface, a key step for them to subsequently penetrate into the infected cell, hemagglutinin (HA) has become one of the main targets for drug design against influenza virus. To develop potent HA inhibitors, the ZINC fragment database was searched for finding the optimal compound with the core hopping technique. As a result, the Neo6 compound was obtained. It has been shown through the subsequent molecular docking studies and molecular dynamic simulations that Neo6 not only assumes more favorable conformation at the binding pocket of HA but also has stronger binding interaction with its receptor. Accordingly, Neo6 may become a promising candidate for developing new and more powerful drugs for treating influenza. Or at the very least, the findings reported here may provide useful insights to stimulate new strategy in this area

    A critical assessment of the pairing symmetry in NaxCoO2.yH2O

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    We examine each of the symmetry-allowed pairing states of NaxCoO2.yH2O and compare their properties to what is experimentally and theoretically established about the compound. In this way, we can eliminate the vast majority of states that are technically allowed and narrow the field to two, both of f-wave type states. We discuss the expected features of these states and suggest experiments that can distinguish between them. We also discuss odd-frequency gap pairing and how it relates to available experimental evidence

    Conditional control of the quantum states of remote atomic memories for quantum networking

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    Quantum networks hold the promise for revolutionary advances in information processing with quantum resources distributed over remote locations via quantum-repeater architectures. Quantum networks are composed of nodes for storing and processing quantum states, and of channels for transmitting states between them. The scalability of such networks relies critically on the ability to perform conditional operations on states stored in separated quantum memories. Here we report the first implementation of such conditional control of two atomic memories, located in distinct apparatuses, which results in a 28-fold increase of the probability of simultaneously obtaining a pair of single photons, relative to the case without conditional control. As a first application, we demonstrate a high degree of indistinguishability for remotely generated single photons by the observation of destructive interference of their wavepackets. Our results demonstrate experimentally a basic principle for enabling scalable quantum networks, with applications as well to linear optics quantum computation.Comment: 10 pages, 8 figures; Minor corrections. References updated. Published at Nature Physics 2, Advanced Online Publication of 10/29 (2006

    Mapping photonic entanglement into and out of a quantum memory

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    Recent developments of quantum information science critically rely on entanglement, an intriguing aspect of quantum mechanics where parts of a composite system can exhibit correlations stronger than any classical counterpart. In particular, scalable quantum networks require capabilities to create, store, and distribute entanglement among distant matter nodes via photonic channels. Atomic ensembles can play the role of such nodes. So far, in the photon counting regime, heralded entanglement between atomic ensembles has been successfully demonstrated via probabilistic protocols. However, an inherent drawback of this approach is the compromise between the amount of entanglement and its preparation probability, leading intrinsically to low count rate for high entanglement. Here we report a protocol where entanglement between two atomic ensembles is created by coherent mapping of an entangled state of light. By splitting a single-photon and subsequent state transfer, we separate the generation of entanglement and its storage. After a programmable delay, the stored entanglement is mapped back into photonic modes with overall efficiency of 17 %. Improvements of single-photon sources together with our protocol will enable "on demand" entanglement of atomic ensembles, a powerful resource for quantum networking.Comment: 7 pages, and 3 figure

    Quantum teleportation between light and matter

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    Quantum teleportation is an important ingredient in distributed quantum networks, and can also serve as an elementary operation in quantum computers. Teleportation was first demonstrated as a transfer of a quantum state of light onto another light beam; later developments used optical relays and demonstrated entanglement swapping for continuous variables. The teleportation of a quantum state between two single material particles (trapped ions) has now also been achieved. Here we demonstrate teleportation between objects of a different nature - light and matter, which respectively represent 'flying' and 'stationary' media. A quantum state encoded in a light pulse is teleported onto a macroscopic object (an atomic ensemble containing 10^12 caesium atoms). Deterministic teleportation is achieved for sets of coherent states with mean photon number (n) up to a few hundred. The fidelities are 0.58+-0.02 for n=20 and 0.60+-0.02 for n=5 - higher than any classical state transfer can possibly achieve. Besides being of fundamental interest, teleportation using a macroscopic atomic ensemble is relevant for the practical implementation of a quantum repeater. An important factor for the implementation of quantum networks is the teleportation distance between transmitter and receiver; this is 0.5 metres in the present experiment. As our experiment uses propagating light to achieve the entanglement of light and atoms required for teleportation, the present approach should be scalable to longer distances.Comment: 23 pages, 8 figures, incl. supplementary informatio
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