Entanglement properties of spin models in triangular lattices

The different quantum phases appearing in strongly correlated systems as well as their transitions are closely related to the entanglement shared between their constituents. In 1D systems, it is well established that the entanglement spectrum is linked to the symmetries that protect the different quantum phases. This relation extends even further at the phase transitions where a direct link associates the entanglement spectrum to the conformal field theory describing the former. For 2D systems much less is known. The lattice geometry becomes a crucial aspect to consider when studying entanglement and phase transitions. Here, we analyze the entanglement properties of triangular spin lattice models by considering also concepts borrowed from quantum information theory such as geometric entanglement.Comment: 19 pages, 8 figure

A case study of spin-11 Heisenberg model in a triangular lattice

We study the spin-$1$ model in a triangular lattice in presence of a uniaxial anisotropy field using a Cluster Mean-Field approach (CMF). The interplay between antiferromagnetic exchange, lattice geometry and anisotropy forces Gutzwiller mean-field approaches to fail in a certain region of the phase diagram. There, the CMF yields two supersolid (SS) phases compatible with those present in the spin-$1/2$ XXZ model onto which the spin-$1$ system maps. Between these two SS phases, the three-sublattice order is broken and the results of the CMF depend heavily on the geometry and size of the cluster. We discuss the possible presence of a spin liquid in this region.Comment: 7 pages, 4 figures, RevTeX 4. The abstract and conclusions have been modified and the manuscript has been extende

L'inquinamento atmosferico da stabilimenti industriali

Nel R.D. 27 luglio 1934, n. 1265, ci si pone il problema per la prima volta della compatibilità tra le attività industriali, la salubrità dell’ambiente e la salute dell’uomo. La legge 615/1966, la prima sull’inquinamento atmosferico, individua l’aria come un bene giuridico da proteggere e prevede per gli stabilimenti produttivi l’obbligo di possedere impianti, installazioni o dispositivi tali da contenere, entro i più ristretti limiti che il progresso della tecnica consenta, l’emissione di fumi o gas o polveri o esalazioni che possono contribuire all’inquinamento atmosferico. Dopodiché il DPR 203/88 introduce il concetto di protezione dell’ambiente accanto a quello di tutela della salute umana e i valori limite e valori guida per la qualità dell’aria. Nel 2006 entra in vigore il d.lgs. n. 152 che alla Parte V introduce nuovi criteri, definizioni e parametri per le emissioni in atmosfera e per il regime autorizzatorio da seguire. Con il d.lgs. 128/10 si introducono profonde revisioni alla Parte V del d.lgs. 152/06 e con il recepimento di importanti direttive viene revisionata quasi integralmente la normativa in materia di emissioni in atmosfera, formandosi così un quadro normativo complementare con la finalità di contrastare l’inquinamento atmosferico ed i suoi effetti sulla salute e sull’ambiente

Evaluation of response to immunotherapy: new challenges and opportunities for PET imaging

non present

Nonequilibrium critical scaling from quantum thermodynamics

The emerging field of quantum thermodynamics is contributing important results and insights into archetypal many-body problems, including quantum phase transitions. Still, the question whether out-of-equilibrium quantities, such as fluctuations of work, exhibit critical scaling after a sudden quench in a closed system has remained elusive. Here, we take a novel approach to the problem by studying a quench across an impurity quantum critical point. By performing density matrix renormalization group computations on the two-impurity Kondo model, we are able to establish that the irreversible work produced in a quench exhibits finite-size scaling at quantum criticality. This scaling faithfully predicts the equilibrium critical exponents for the crossover length and the order parameter of the model, and, moreover, implies a new exponent for the rescaled irreversible work. By connecting the irreversible work to the two-impurity spin correlation function, our findings can be tested experimentally.Comment: 6 pages, 4 figure

Surgical management and oncological follow-up of cutaneous squamous cell carcinomas arising in epidermolysis bullosa patients

Background Hereditary epidermolysis bullosa (EB) is a rare genodermatosis characterized by skin fragility and blistering of the skin and mucous membranes in reaction to minimal traumas. The development of cutaneous squamous cell carcinomas (cSCCs) is one of the most common medical complications in junctional and dystrophic forms of the disease. Complete surgical excision of cutaneous tumors represents the gold standard of treatment. However, not only recognition of cSCCs can be challenging in the affected skin but also wound closure after surgical excision poses a great therapeutic challenge in EB patients. The aim of our study was to analyze the postoperative outcomes of such patients in order to have a better knowledge of the main critical issues in their surgical management and oncological follow-up. Methods We retrospectively identified a cohort of five EB patients treated at Modena University Hospital. Collected data included patient age and sex, date of cSCC diagnosis, relapses/recurrences, site of the neoplasm, number of surgical interventions, use of dermal substitutes, and postoperative infections. Results A total of 26 cSCCs were detected in our cohort. Forty-one surgical interventions were necessary to achieve excision of cSCCs with clear margins, varying from 1 to 4 surgical sessions per cSCC. Dermal substitutes were used in most cases but carried a higher infectious risk. Conclusions EB patients tend to develop numerous cSCCs that often relapse even after complete excision with clear margins. These results stress the importance of early cSCC diagnosis and strict postsurgical follow-up

Spirituality for Late Adolescents Coping with Grief and Loss

Experiencing the death of a loved one is often life changing, and learning ways to cope is an important part of the healing process. Such a change can be particularly difficult for late adolescents (individuals between 18 and 25 years of age) who are already going through significant life changes. Spirituality and mental health has received increasing scholarly attention in recent years, and the Association for Spirituality, Ethics, and Religious Values in Counseling has developed competencies for counselors to use when working with clients who wish to incorporate spirituality in their treatment. Despite increased interest in the field, there is little scholarly literature on the use of spirituality in counseling late adolescents who are experiencing grief and loss. The purpose of this hermeneutic phenomenological study was to explore the meaning and role of spirituality and spiritual practices in the grieving processes of late adolescents. Existential theory provided the framework for the study. Participants were recruited from a local grief center, college, and university as well as CESnet and ASERVIC listservs. Seven late adolescents took part in semistructured interviews regarding their grieving process. Lindseth and Norberg\u27s phenomenological hermeneutical method was used to analyze the data consisting of naïve reading, structural analysis, and comprehensive understanding. Themes included experiences with death, surviving the loss, and changes. Findings indicated that spiritual practices were beneficial in helping grieving late adolescents cope with the death of a loved one. Results may provide counselors with additional ways to work with this population during their grieving process

The Key Roles of PTEN in T-Cell Acute Lymphoblastic Leukemia Development, Progression, and Therapeutic Response

T-cell acute lymphoblastic leukemia (T-ALL) is an aggressive blood cancer that comprises 10–15% of pediatric and ~25% of adult ALL cases. Although the curative rates have significantly improved over the past 10 years, especially in pediatric patients, T-ALL remains a challenge from a therapeutic point of view, due to the high number of early relapses that are for the most part resistant to further treatment. Considerable advances in the understanding of the genes, signaling networks, and mechanisms that play crucial roles in the pathobiology of T-ALL have led to the identification of the key drivers of the disease, thereby paving the way for new therapeutic approaches. PTEN is critical to prevent the malignant transformation of T-cells. However, its expression and functions are altered in human T-ALL. PTEN is frequently deleted or mutated, while PTEN protein is often phosphorylated and functionally inactivated by casein kinase 2. Different murine knockout models recapitulating the development of T-ALL have demonstrated that PTEN abnormalities are at the hub of an intricate oncogenic network sustaining and driving leukemia development by activating several signaling cascades associated with drug-resistance and poor outcome. These aspects and their possible therapeutic implications are highlighted in this review

Peptide Receptor Radionuclide Therapy for Advanced Neuroendocrine Tumors

No abstract availabl