383 research outputs found
Quantum Physics Literacy Aimed at K12 and General Public
Teaching quantum physics to K12 students and the general public represents an inevitable must, while quantum technologies revolutionize our lives. Quantum literacy is a formidable challenge and an extraordinary opportunity for a massive cultural uplift, where citizens learn how to engender creativity and practice a new way of thinking, essential for smart community building. Scientific thinking hinges on analyzing facts and creating understanding, then formulating these with dense mathematical language for later fact checking. Within classical physics, learners’ intuition can be educated via classroom demonstrations of everyday life phenomena. Their understanding can even be framed with the mathematics suited to their instruction degree. For quantum physics instead, we have no experience of quantum phenomena, and the required mathematics is beyond non-expert reach. Therefore, educating intuition needs imagination. Without resorting to experiments and some degree of formal framing, educators face the risk of providing only evanescent tales, often misled, while resorting to familiar analogies. Here, we report on the realization of QPlayLearn, an online platform conceived to explicitly address challenges and opportunities of massive quantum literacy. QPlayLearn’s mission is to provide multilevel education on quantum science and technologies to anyone, regardless of age and background. To this aim, innovative interactive tools enhance the learning process effectiveness, fun, and accessibility, while remaining grounded in scientific correctness. Examples are games for basic quantum physics teaching, on-purpose designed animations, and easy-to-understand explanations on terminology and concepts by global experts. As a strategy for massive cultural change, QPlayLearn offers diversified content for different target groups, from primary school all the way to university physics students. It is also addressed to companies wishing to understand the potential of the emergent quantum industry, journalists, and policy makers who need to quickly to understand what quantum technologies are about, and all quantum science enthusiasts.Peer reviewe
Effective description of the short-time dynamics in open quantum systems
We address the dynamics of a bosonic system coupled to either a bosonic or a
magnetic environment, and derive a set of sufficient conditions that allow one
to describe the dynamics in terms of the effective interaction with a classical
fluctuating field. We find that for short interaction times the dynamics of the
open system is described by a Gaussian noise map for several different
interaction models and independently on the temperature of the environment. In
order to go beyond a qualitative understanding of the origin and physical
meaning of the above short-time constraint, we take a general viewpoint and,
based on an algebraic approach, suggest that any quantum environment can be
described by classical fields whenever global symmetries lead to the definition
of environmental operators that remain well defined when increasing the size,
i.e. the number of dynamical variables, of the environment. In the case of the
bosonic environment this statement is exactly demonstrated via a constructive
procedure that explicitly shows why a large number of environmental dynamical
variables and, necessarily, global symmetries, entail the set of conditions
derived in the first part of the work.Comment: 9 pages, close to published versio
Quantum Physics Literacy Aimed at K12 and the General Public
Educating K12 students and general public in quantum physics represents an evitable must no longer since quantum technologies are going to revolutionize our lives. Quantum literacy is a formidable challenge and an extraordinary opportunity for a massive cultural uplift, where citizens learn how to engender creativity and practice a new way of thinking, essential for smart community building. Scientific thinking hinges on analyzing facts and creating understanding, and it is then formulated with the dense mathematical language for later fact checking. Within classical physics, learners’ intuition may in principle be educated via classroom demonstrations of everyday-life phenomena. Their understanding can even be framed with the mathematics suited to their instruction degree. For quantum physics, on the contrary, we have no experience of quantum phenomena and the required mathematics is beyond non-expert reach. Therefore, educating intuition needs imagination. Without rooting to experiments and some degree of formal framing, educators face the risk to provide only evanescent tales, often misled, while resorting to familiar analogies. Here, we report on the realization of QPlayLearn, an online platform conceived to explicitly address challenges and opportunities of massive quantum literacy. QPlayLearn’s mission is to provide multilevel education on quantum science and technologies to anyone, regardless of age and background. To this aim, innovative interactive tools enhance the learning process effectiveness, fun, and accessibility, while remaining grounded on scientific correctness. Examples are games for basic quantum physics teaching, on-purpose designed animations, and easy-to-understand explanations on terminology and concepts by global experts. As a strategy for massive cultural change, QPlayLearn offers diversified content for different target groups, from primary school all the way to university physics students. It is addressed also to companies wishing to understand the potential of the emergent quantum industry, journalists, and policymakers needing to seize what quantum technologies are about, as well as all quantum science enthusiasts
Quantum Physics Literacy Aimed at K12 and the General Public
Educating K12 students and general public in quantum physics represents an evitable must no longer since quantum technologies are going to revolutionize our lives. Quantum literacy is a formidable challenge and an extraordinary opportunity for a massive cultural uplift, where citizens learn how to engender creativity and practice a new way of thinking, essential for smart community building. Scientific thinking hinges on analyzing facts and creating understanding, and it is then formulated with the dense mathematical language for later fact checking. Within classical physics, learners' intuition may in principle be educated via classroom demonstrations of everyday-life phenomena. Their understanding can even be framed with the mathematics suited to their instruction degree. For quantum physics, on the contrary, we have no experience of quantum phenomena and the required mathematics is beyond non-expert reach. Therefore, educating intuition needs imagination. Without rooting to experiments and some degree of formal framing, educators face the risk to provide only evanescent tales, often misled, while resorting to familiar analogies. Here, we report on the realization of QPlayLearn, an online platform conceived to explicitly address challenges and opportunities of massive quantum literacy. QPlayLearn's mission is to provide multilevel education on quantum science and technologies to anyone, regardless of age and background. To this aim, innovative interactive tools enhance the learning process effectiveness, fun, and accessibility, while remaining grounded on scientific correctness. Examples are games for basic quantum physics teaching, on-purpose designed animations, and easy-to-understand explanations on terminology and concepts by global experts. As a strategy for massive cultural change, QPlayLearn offers diversified content for different target groups, from primary school all the way to university physics students. It is addressed also to companies wishing to understand the potential of the emergent quantum industry, journalists, and policymakers needing to seize what quantum technologies are about, as well as all quantum science enthusiasts.Peer reviewe
Vitamin D and atopic dermatitis in childhood.
Vitamin D features immunomodulatory effects on both the innate and adaptive immune systems, which may explain the growing evidence connecting vitamin D to allergic diseases. A wealth of studies describing a beneficial effect of vitamin D on atopic dermatitis (AD) prevalence and severity are known. However, observations linking high vitamin D levels to an increased risk of developing AD have also been published, effectively creating a controversy. In this paper, we review the existing literature on the association between AD and vitamin D levels, focusing on childhood. As of today, the role of vitamin D in AD is far from clear; additional studies are particularly needed in order to confirm the promising therapeutic role of vitamin D supplementation in childhood AD
Pilomatrixcarcinoma of the Foot: A New Localization of an Extremely Rare Adnexal Tumour
Pilomatrixcarcinoma is a very rare follicular neoplasm that shows matrical differentiation. The majority of these lesions originate de novo, while only a few cases of transformation of pilomatricoma (calcifying epithelioma of Malherbe) have been described in the literature. The neoplasm affects mostly middle-aged males with a male-to-female ratio of 3–4:1. The most common localizations are the face, head, trunk and extremites, though there are a few reports of pilomatrixcarcinoma of the eyelid, eyebrow, axilla and clitorid. Here, we describe the first case of a pilomatrixcarcinoma on the anterolateral surface of the first toe of the left foot of an 83-year-old patient, which developed in less than six months and led to amputation of the distal phalanx. We report a brief review of the current literature with particular emphasis on histopathological features useful for diagnosis
Lichen striatus successfully treated with oral cyclosporine
Lichen striatus is an acquired, benign, linear inflammatory dermatosis characterized by a sudden skin eruption along Blaschkoâs lines that usually is not associated with specific etiologic agents. In most cases, it is a self-limited dermatosis, but may relapse. Topical steroids are its first-line therapy, but this treatment is not always effective. We describe the case of a 45-year-old woman affected by a lichen striatus on her right limb resistant to topical corticosteroid therapy. The patient was successfully treated with cyclosporine (4 mg/kg/die) for 4 weeks with no recurrence of the dermatitis during the subsequent 1-year follow-up period
Cutaneous Metastases from Primary Liver Cancers: The Need for Knowledge and Differential Diagnosis
Primary skin tumors are certainly more frequent than metastatic tumors, but the latter can sometimes be the first sign of otherwise unrecognized neoplastic pathology and always correspond to an advanced stage of the disease. Among the various neoplasms that can metastasize in cutaneous districts, skin metastases from primary malignant neoplasms from the liver and biliary tract are infrequent, and when they do occur they can pose differential diagnosis problems to the pathologist. Here we present two cases of metastatic skin lesions, respectively originating from the liver and the intrahepatic biliary tract, and we conduct a brief review of the current literature
Cutaneous manifestations of Mycobacterium gordonae infection described for the first time in Italy: a case report
Introduction: Mycobacterium gordonae is one of the least pathogenic of the mycobacteria. This
pathogen may produce caseating or non-caseating granulomas, and skin lesions showing acute or
chronic inflammation with scattered histiocytes and giant cells have been seen. The mortality rate is
less than 0.1%. Mycobacterium gordonae may be a marker of severe immunosuppression in patients
infected with human immunodeficiency virus.
Case presentation: We report a case of Mycobacterium gordonae infection in an 86-year-old woman
and discuss the problems inherent to the identification and treatment of this emerging pathogen.
Mycobacterium gordonae strain we isolated was resistant to trimethoprim-sulfamethoxazole but
sensitive to ciprofloxacin, and long term administration (six months) induced complete healing of the
cutaneous abscesses.
Conclusion: Advanced laboratory diagnostic techniques have improved the isolation and
identification of nontuberculous mycobacteria. The diagnosis requires a high index of clinical
suspicion, as detection by conventional methods is difficult. To our knowledge, this patient is the first
documented case of cutaneous infection from this pathogen in Italy
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