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In this Zenodo Repository, we provide the raw data and gnuplot/python script to plot the figures shown in the following paper https://journals.aps.org/prb/abstract/10.1103/PhysRevB.106.L180506 Superconductivity enhanced by pair fluctuations between wide and narrow bands Authors: Changming Yue, Hideo Aoki, and Philipp Werner Abstract: Full or empty narrow bands near the Fermi level are known to enhance superconductivity by promoting scattering processes and spin fluctuations. Here, we demonstrate that doublon-holon fluctuations in systems with half-filled narrow bands can similarly boost the superconducting Tc. We study the half-filled attractive bilayer Hubbard model on the square lattice using dynamical mean-field theory. The band structure of the noninteracting system contains a wide band formed by bonding orbitals and a narrow band formed by antibonding orbitals, with bandwidths tunable by the interlayer hopping. The shrinking of the narrow band can lead to a substantial increase in the superconducting order parameter and phase stiffness in the wide band. At the same time, the coupling to the wide band allows the narrow band to remain superconducting—and to reach the largest order parameter—in the flat band limit. We develop an anomalous worm sampling method to study superconductivity in the limit of vanishing effective hopping. By analyzing the histogram of the local eigenstates, we clarify how the interplay between different interaction terms in the bonding/antibonding basis promotes pair fluctuations and superconductivity. Please enter each folder and proceed according the "Readme.txt" inside that folder. Acknowledgments. The calculations were performed on the Beo05 cluster at the University of Fribourg, using a code based on iQIST [67,68]. C.Y. and P.W. acknowledge support from SNSF Grant No. 200021-196966. H.A. thanks CREST (Core Research for Evolutional Science and Technology project from Japan Science and Technology Agency; Grant Number JPMJCR18T4)., Data for Fig2d and FigS2 will be uploaded later.

Objectives To estimate the incidence of dengue infection across geographically distinct areas of Brazil. Methods This prospective, household-based, cohort study enrolled participants in five areas and followed them up for up to 4 years (2014–2018). Dengue seroprevalence was assessed at each scheduled visit. Suspected dengue cases were identified through enhanced passive and active surveillance. Acute symptomatic dengue infection was confirmed through reverse-transcriptase quantitative polymerase chain reaction in combination with an antigenic assay (non-structural protein 1) and serology. Results Among 3300 participants enrolled, baseline seroprevalence was 76.2%, although only 23.3% of participants reported a history of dengue. Of 1284 suspected symptomatic dengue cases detected, 50 (3.9%) were laboratory-confirmed. Based on 8166.5 person-years (PY) of follow-up, the incidence of laboratory-confirmed symptomatic infection (primary endpoint) was 6.1 per 1000 PY (95% confidence interval [CI]: 4.5, 8.1). Incidence varied substantially in different years (1.8–7.4 per 1000 PY). The incidence of inapparent primary dengue infection was substantially higher: 41.7 per 1000 PY (95% CI: 31.1, 54.6). Conclusions Our findings, highlighting that the incidence of dengue infection is underestimated in Brazil, will inform the design and implementation of future dengue vaccine trials. Clinical trial registration NCT01751139

After the Meiji Restoration in 1868, Japan rapidly industrialized, greatly raising its level of economic productivity. However, the peasants were kept in a state of hunger under a semifeudal agricultural system. How should this semi-feudality be understood? About this question arose a debate among Japanese Marxists in prewar Japan: the Debate on Japanese Capitalism. This article examines the methodologies of three analysists of Japanese capitalism focusing on the level of abstraction of the analysis of capitalism, whose ideas were derived from Hegel’s Logic and Marx’s methodology of downward analysis and upward development: Moritarō Yamada of Kōzaha, Itsurō Sakisaka of Rōnōha, and Kōzō Uno, who distanced himself from both sides. Uno criticized Yamada and Sakisaka for directly analyzing a particular Japanese capitalism with a highly general theory such as Capital, and proposed the Three-Stage Theory: the Pure Theory, which is based on the assumption of a pure capitalism, such as Marx’s Capital; the Stage Theory, which clarifies the historical developmental stage of capitalism, such as Lenin’s Imperialism (1917); and the Empirical Analysis, which analyzes capitalism in each country at a given time. However, Uno’s main concern was to analyze Japanese capitalism in the Stage Theory, doing little to further advance it in the Empirical Analysis. Therefore, this article divided the Empirical Analysis into two levels of abstraction: the domain of theoretical construction of Japanese Capitalism, such as Lenin’s Development of Capitalism in Russia (1899), and of data analysis of specific conditions of Japanese capitalism, such as Engels’ The Condition of the Working Class in England (1844), and thus proposed the Four-Stage Theory. It is a hypothesis for complementing Uno’s Three-Stage Theory, which should be further developed by data. Finally, such methodological consideration for analyzing capitalism is applicable to non-Japanese capitalist societies.

One novel arena for designing superconductors with high $T_C$ is the flat-band systems. A basic idea is that flat bands, arising from quantum mechanical interference, give unique opportunities for enhancing $T_C$ with (i) many pair-scattering channels between the dispersive and flat bands, and (ii) an even more interesting situation when the flat band is topological and highly entangled. Here we compare two routes, which comprise a multi-band system with a flat band coexisting with dispersive ones, and a one-band case with a portion of the band being flat. Superconductivity can be induced in both cases when the flat band or portion is "incipient" (close to, but away from, the Fermi energy). Differences are, for the multi-band case, we can exploit large entanglement associated with topological states, while for the one-band case a transition between different (d and p) wave pairings can arise. These hint at some future directions., 6 pages, 5 figures, Proc. Int. Conf. "Superstripes 2019"

Endocardite Infecciosa (EI) é uma condição clínica que requer rápido diagnóstico e abordagem terapêutica precoce, oportuna e apropriada, sendo que o diagnóstico microbiológico frequentemente se fundamenta nas técnicas de hemoculturas. No entanto, nas EI com hemoculturas negativas, outras estratégias para o diagnóstico laboratorial devem ser consideradas visando a detecção de patógenos de difícil crescimento em meios de cultura, incluindo-se Bartonella e Coxiella. M.F.P, masculino, 45 anos, com antecedente de hipertensão arterial sistêmica, obesidade, etilismo e tabagismo, transferido de outro serviço para investigação de perda de força em membro superior direito e afasia. À admissão, devido a sopro diastólico aórtico à ausculta cardíaca e tomografia computadorizada de crânio com presença de isquemia frontal à esquerda, foi submetido a ecocardiograma transtorácico (ECO-TT), que evidenciou vegetação em valva aórtica medindo 10 × 15mm. Apresentou 6 amostras de hemoculturas negativas durante tempo de internação. Iniciado tratamento para EI com ampicilina-sulbactam + gentamicina. Submetido a ecocardiograma transesofágico que confirmou a presença de vegetação. ECO-TT de controle realizado em D15 de tratamento evidenciou aumento da vegetação (20 × 14mm). Submetido à cirurgia em D 15 de internação e D20 de antibioticoterapia para troca de valva por prótese metálica. Solicitada interconsulta (IC) à Infectologia para discussão do tempo de antibioticoterapia. Frente aos históricos de hemoculturas negativas (iniciais e sequenciais), deterioração clínica e ecocardiográfica em vigência de antibioticoterapia e cultura negativa da válvula cardíaca retirada, recomendada ampliação da investigação etiológica para patógenos de difícil crescimento em cultura, dentre eles Coxiella burnetii, para a qual sorologia por Imunofluorescência indireta se mostrou reagente em amostras pareadas com títulos elevados (1600), resultados (≥ 800) considerados confirmatórios para infecção pela C. burnetii. Recomendada adequação do esquema com doxiciclina associada à hidroxicloroquina. Paciente recebeu alta hospitalar para seguimento ambulatorial conjunto entre as especialidades. O presente relato reforça a importância da IC precoce com Infectologia e que, diante de casos de EI com hemocultura negativa, além da suspeita qualificada há a necessidade de investigação laboratorial apropriada e sistemática para detecção de patógenos de difícil crescimento em meios de cultura convencionais.

Objective: The objective of this study was to evaluate the prevalence and incidence of accidents with biological material, the level of knowledge, and compliance to standard precautions (SPs) among dentists, physicians, nurses, and dental and medical students. Methods: A closed cohort study with a prospective and retrospective component was conducted between August 2014 and September 2015. The participants were contacted in two moments during the follow-up period, during which a structured questionnaire divided into six sections was used; the interviews were conducted during the follow-up period (Month 6) and at the end of the observation period (Month 12). Results: The global prevalence of accidents in the previous 12 months was 10.2%, with a difference between professionals and students (13.0% vs. 5.1%, respectively; p

A fast split operator method for computing time-dependent quantum states in bilayer graphene in a magnetic field is developed. The method is about an order of magnitude faster than the existing split operator method. It can also be used to compute time-dependent states in monolayer graphene and other systems with a Hamiltonian that depends linearly on momentum. The new method is based on an operator splitting that reduces the cubic order local error that appears in any split operator approximation to the evolution operator. The reduced error allows a larger time step to be used and hence reduces computational cost. The computational cost and accuracy of the existing and new split operator methods are analysed for the test problem of computing the motion of a Landau wave packet in bilayer graphene in crossed electric and magnetic fields. A comparison with the Chebyshev polynomial method is also given.

We study how a $d$-wave superconductivity is changed when illuminated by circularly-polarised light (CPL) in the repulsive Hubbard model in the strong-coupling regime. We adopt the Floquet formalism for the Gutzwiller-projected effective Hamiltonian with the time-periodic Schrieffer-Wolff transformation. We find that CPL induces a topological superconductivity with a $d+id$ pairing, which arises from the chiral spin coupling and the three-site term generated by the CPL. The latter term remains significant even for low frequencies and low intensities of the CPL. This is clearly reflected in the obtained phase diagram against the laser intensity and temperature for various frequencies red-detuned from the Hubbard $U$, with the transient dynamics also examined. The phenomenon revealed here can open a novel, dynamical way to induce a topological superconductivity., 13 pages, 6 figures

We explore the interplay between nematicity~(spontaneous breaking of the sixfold rotational symmetry), superconductivity, and non-Fermi liquid behavior in partially flat-band models on the triangular lattice. A key result is that the nematicity (Pomeranchuk instability), which is driven by many-body effect and stronger in flat-band systems, enhances superconducting transition temperature in a systematic manner on the $T_{\rm c}$ dome. There, a $s_{x^2+y^2} - d_{x^2-y^2} - d_{xy}$-wave symmetry, in place of the conventional $d_{x^2-y^2}$-wave, governs the nematicity-enhanced pairing with a sharp rise in the $T_{\rm c}$ dome on the filling axis. When the sixfold symmetry is spontaneously broken, the pairing becomes more compact in real space than in the case when the symmetry is enforced. These are accompanied by a non-Fermi character of electrons in the partially flat bands with many-body interactions., Comment: 6+18 pages, 5+26 figures

We propose an optical method of shining circularly polarized and spatially periodic laser fields to imprint superlattice structures in two-dimensional electronic systems. By changing the configuration of the optical field, we synthesize various lattice structures with different spatial symmetry, periodicity, and strength. We find that the wide optical tunability allows one to tune different properties of the effective band structure, including Chern number, energy bandwidths, and band gaps. The in situ tunability of the superlattice gives rise to unique physics ranging from the topological transitions to the creation of the flat bands through the kagome superlattice, which can allow a realization of strongly correlated phenomena in Floquet systems. We consider the high-frequency regime where the electronic system can remain in the quasiequilibrium phase for an extended amount of time. The spatiotemporal reconfigurability of the present scheme opens up possibilities to control light-matter interaction to generate novel electronic states and optoelectronic devices., 5+5 pages, 4+2 figures

The authors introduce a multiorbital model with a Lieb-lattice structure to show that the disrupted CuO network in Ba${}_{2}$CuO${}_{3+\ensuremath{\delta}}$ can accommodate new pairing mechanisms

Effective models are constructed for a newly discovered superconductor (Nd,Sr)NiO_{2}, which has been considered as a possible nickelate analog of the cuprates. Estimation of the effective interaction, which turns out to require a multiorbital model that takes account of all the orbitals involved on the Fermi surface, shows that the effective interactions are significantly larger than in the cuprates. A fluctuation exchange study suggests occurrence of d_{x^{2}-y^{2}}-wave superconductivity, where the transition temperature should be lowered from the cuprates due to the larger interaction.

Resumo A Norma Regulamentadora NR 32 objetiva reduzir acidentes e doenças entre os trabalhadores da saúde. Filiando-nos à perspectiva da análise do discurso proposta por Michel Pêcheux, nesta pesquisa tivemos como objetivo compreender o processo de significação em torno de segurança e saúde no trabalho na NR 32 e apreender como este processo significa nas políticas públicas no Brasil. Mostramos que, embora a norma seja um meio de assegurar a segurança e a saúde ao trabalhador, sua discursividade formula a segurança como um mito fundamentado em alegações externas ao processo de regulação das condições de trabalho e alheio às exigências coletivas e culturais de produção. Nesse processo, produz-se a responsabilização do trabalhador convertido em vigilante de si próprio e responsabilizado por isso de maneira individualizada. Pudemos, finalmente, observar um efeito de sentido que indica uma conexão que, na prática, resulta em apoio econômico às empresas que produzem e/ou comercializam os dispositivos de segurança para os materiais perfurocortantes. Abstract Regulation NR 32 has the goal of reducing accidents and disease among health workers. Adopting the perspective of the discourse analysis proposed by Michel Pêcheux, in this research we had the goal of understanding the process of signification regarding safety and health at work within the NR 32, and learn how this process signifies in the public policies in Brazil. We show that, even though the regulation is a means of guaranteeing the safety and health of the worker, its discursiveness formulates safety as a myth based on claims that are not part of the process of regulation of labor conditions and are unconnected to the collective and cultural requirements for production. In this process, the responsibilization of the worker is produced, and the workers become watchmen of themselves, and are held accountable for that in an individualized manner. Finally, we could observe an effect of meaning that points to a connection that, in practice, results in financial support to the companies that make and/or sell the safety devices for sharps. Resumen El objetivo de la Norma Reguladora NR 32 es reducir accidentes y enfermedades entre los trabajadores de la salud. Tomando como base la perspectiva del análisis del discurso propuesto por Michel Pêcheux, el objetivo en esta investigación fue comprender el proceso de significación en torno a la seguridad y la salud en el trabajo en la NR 32 y entender lo que significa este proceso en las políticas públicas de Brasil. Se muestra que más allá de la norma ser un medio de asegurar la seguridad y la salud al trabajador, su discurso formula a la seguridad como un mito fundamentado en alegaciones externas al proceso de regulación de las condiciones de trabajo y ajeno a las exigencias colectivas y culturales de producción. En este proceso, se responsabiliza al trabajador convirtiéndolo en cuidador de sí mismo y a cargo por dicha responsabilidad de manera individual. Por último, pudimos observar un efecto de sentido que indica una conexión, la cual en la práctica se traduce como apoyo económico a las empresas que producen y/o comercializan los dispositivos de seguridad para los materiales punzantes.

Robustness of zero-modes of two-dimensional Dirac fermions is examined numerically for the honeycomb lattice in the presence of Kekul\'e bond ordering. The split $n=0$ Landau levels in a magnetic field as well as the zero-modes generated by topological defects in the Kekul\'e ordering are shown to exhibit anomalous robustness against disorder when the chiral symmetry is respected., Comment: 11 pages, 9 figures, submitted to the proceedings of Localisation 2020

Conventional fixed-height non-programmable cryopreservation methods produce unstable cooling rates (CRs). We developed a method that predicts CRs based on the measurement of the temperatures around the straw, which allows for the adjustment of sample height to obtain accurate CRs. We used spermatozoa from the Japanese pearl oyster as an experimental model. A stainless-steel jar containing liquid nitrogen (LN) with a cork lid was used as the cooling vessel. A slit was made in the lid and a stainless-steel ruler inserted through the slit. A Styrofoam rack holding straws was attached to the lower end of the ruler. With this device, the height of the straws could be adjusted during cooling with the lid closed. The CR was controlled over two temperature ranges from 0 °C to the commencement of solidification heat (CSH) and from the commencement of ice nucleation (CIN) to − 40 °C. CR0-CSH was controlled for by the distance from the LN surface at the beginning of cooling. CRCIN-40 correlated with the temperature around the straw at CIN (R2 = 0.993) and this temperature correlated with the temperature around the straw when the inside of the straw reached − 10 °C (R2 = 0.996). From these relationships, CRCIN-40 could be predicted by the temperature around the straw when the interior of the straw reached − 10 °C. If the predicted CRCIN-40 was not achieved, the temperature around the straw could be adjusted by changing the sample height immediately after CIN.

The pearl culture industry using the Akoya pearl oyster Pinctada fucata in Japan has been suffering from low productivity due to the proportion of low-quality pearls, which are not round in shape and have blemishes on the surface, is fairly high with over 70% of pearls effected. Recent studies indicate that the immersion treatment of oysters in low salinity seawater (25 psu) in a tank for 8 days just after the implantation of nuclei has a positive effect on the production of high-quality pearls compared to the suspension of oysters in the sea (33 psu), so-called the “conventional method”, throughout two weeks of the post-operative care. However, a mechanism to increase the proportion of high-quality pearls in low salinity seawater is not fully known. In this study, we compared the periods from the implantation of nuclei to the completion of pearl-sac formation among implanted pearl oysters nursed in tanks containing low salinity (25 psu) or normal salinity (33 psu) seawater in tanks and in the sea (33 psu). After the immersion of the implanted oysters in 25 or 33 psu seawater in the tanks for 8 days, animals were suspended from a raft in an inland bay for the remainder of post-operative care period. The implanted oysters treated with the conventional method were all fastened from the raft throughout the post-operative care period. The oysters from the three treatments were 10% formalin-fixed at periodic intervals and thin slices of the nucleus-implanted part of body were prepared for the examination of the process of pearl-sac formation. The oysters suspended from the raft in the sea throughout the post-operative care period showed the shortest interval from the implantation to the pearl-sac formation, followed by those in normal salinity and low salinity treatments, respectively. This trend corresponds well to that in the proportion of high-quality pearls among the three treatments. The results of the present study suggest that the delay of pearl-sac formation is most likely one of the important factors in preventing deformities and blemishes of pearls in future culture production.

This was a cross-sectional study to start a cohort in two University Hospitals of two countries - Brazil and Colombia - for assessing the prevalence of needlestick and sharps injuries (NSI), the level of compliance with standard precautions (SPs), and knowledge on blood borne pathogens and associated factors among health students and professionals, within the framework of the implementation of the NR-32 standard. We created compliance scales based on 12 and 10 questions, for assessing knowledge. We used the Multinomial Poisson-Tweedie Regression to evaluate the relationship between knowledge and compliance with SPs within NSI. We evaluated 965 individuals (348 students and 614 professionals). The mean score points for level of knowledge was 10.98, with a median of 11 (10; 12) and α-Cr of 0,625. Compliance with SP had a mean of 30.74 and median of 31 (28; 34), with a α-Cr coefficient of 0.745, associated with country, group (student) and risk perception. Among the factors associated with the report of NSI, we singled out knowledge and compliance, country of origin, and full vaccination scheme against the Hepatitis B virus. We concluded that the level of knowledge and compliance were adequate among participants, but better among Brazilian participants, and it was associated with NSI reporting.

While many-body effects in flat-band systems are receiving renewed hot interest in condensed-matter physics for superconducting and topological properties as well as for magnetism, studies have primarily been restricted to multiband systems (with coexisting flat and dispersive bands). Here we focus on one-band systems where a band is ``partially flat,'' comprising flat and dispersive portions in $k$ space to reveal whether intriguing correlation effects can already arise on the simplest possible one-band level. For that, the two-dimensional repulsive Hubbard model is studied for two models having different flat areas in an intermediate-coupling regime with the dynamical mean-field theory combined with the fluctuation exchange approximation. We have a crossover from ferromagnetic to antiferromagnetic spin fluctuations as the band filling is varied and this triggers, for the model with a wider flat portion, a triplet-pair superconductivity favored over an unusually wide filling region, which is taken over by a sharply growing singlet pairing. For the model with a narrower flat portion, ${T}_{C}$ against filling exhibits an unusual double-peaked ${T}_{C}$ dome, associated with different numbers of nodes in the gap function having remarkably extended pairs in real space. We identify these as a manifestation of the physics outside the conventional nesting physics where only the pair scattering across the Fermi surface in designated (hot) spots is relevant. Another correlation effect arising from the flattened band is found in a non-Fermi-liquid behavior as detected in the momentum distribution function, frequency dependence of the self-energy, and spectral function. These indicate that unusual correlation physics can indeed occur in flat-band systems.

It is shown that potential barriers in bilayer graphene (BLG) and monolayer transition metal dichalcogenides (TMDs) can split a valley unpolarized incident current into reflected and transmitted currents with opposite valley polarization. Valley asymmetric transmission inevitably occurs because of the low symmetry of the total Hamiltonian and when total external reflection occurs the transmission is 100% valley polarized in BLG and 100% spin and valley polarized in TMDs, except for exponentially small corrections. By adjusting the potential, 100% polarization can be obtained regardless of the crystallographic orientation of the barrier. A valley polarizer can be realized by arranging for a collimated beam of carriers to be incident on a barrier within the range of angles for total external reflection. The transmission coefficients of barriers with a relative rotation of $\pm\pi/3$ are related by symmetry. This allows two barriers to be used to demonstrate that the current is valley polarized. A soft-walled potential is used to model the barrier and the method used to find the transmission coefficients is explained. In the case of monolayer TMDs, a 4-band k.p Hamiltonian is used and the k.p parameters are obtained by fitting to ab-initio band structures., Comment: 21 pages, 16 figures; merged paper and supplemental material; updated references

Effective models are constructed for a newly discovered superconductor (Nd,Sr)NiO_{2}, which has been considered as a possible nickelate analog of the cuprates. Estimation of the effective interaction, which turns out to require a multiorbital model that takes account of all the orbitals involved on the Fermi surface, shows that the effective interactions are significantly larger than in the cuprates. A fluctuation exchange study suggests occurrence of d_{x^{2}-y^{2}}-wave superconductivity, where the transition temperature should be lowered from the cuprates due to the larger interaction.

The Pacific oyster Crassostrea gigas is a commercially important bivalve distributed along the northwest Pacific coast. Here C. gigas in Japan was investigated using mtDNA and microsatellite markers to elucidate its genetic structure and phylogeny. On the basis of mtDNA all populations showed high genetic diversity with limited genetic differentiation among populations. The pattern of MtDNA diversity suggested that C. gigas had experienced population expansion about 112 Kya, prior to the last glacial maximum (LGM), which accorded well with other marine organisms. For microsatellites, a Bayesian-based assignment test demonstrated that C. gigas is nearly panmictic. However, on the basis of estimates of FST, Kumano populations differed significantly from other populations, a recent occurrence based on low RST. Irrespective of geographical distance, genetic similarity was observed in the main aquaculture regions with large-scale transportation of cultured spat. Unlike in the Yellow Sea, a genetic bottleneck was not detected in Japanese populations. These results imply, contrary to the prevailing view, that C. gigas in Japan was demographically stable during the LGM. Gene flow by larval dispersal seems to be regionally restricted to localities of congenital areas by ocean currents, while genetic homogenization by cultivated oysters might have occurred in aquaculture areas.

We report a case of an elderly patient with chronic periodontitis requiring periodontal surgery. An 86-year-old man presented to Tokyo Dental College Suidobashi Hospital with the chief complaint of tooth fracture in the anterior region and occlusal pain in the posterior region. Clinical examination revealed 47% of sites with a probing depth (PD) of ≥4 mm and 47% of sites with bleeding on probing. Radiographic examination revealed generalized moderate horizontal bone loss with localized vertical defects. A clinical diagnosis of moderate chronic periodontitis was made. The patient's oral health-related quality of life (QoL) was also assessed at the time of each periodontal assessment. Initial periodontal therapy was provided followed by periodontal surgery. Open flap debridement was performed at sites with a PD of ≥5 mm (teeth #15-17). Surgical crown lengthening with an apically positioned flap was performed on #11 and 13 to gain an adequate biological width for the subsequent crown restoration. After confirming the stability of the periodontal tissue, provisional restorations were replaced with final restorations. No further deterioration was observed in the periodontal condition during the subsequent 1-year period of supportive periodontal therapy. Oral health-related QoL was markedly improved by the periodontal therapy. This suggests that periodontal therapy plays an important role in improving and maintaining oral health-related QoL in elderly people.

To fathom the mechanism of high-temperature ($T_{\rm c}$) superconductivity, the dynamical vertex approximation (D$\Gamma$A) is evoked for the two-dimensional repulsive Hubbard model. After showing that our results well reproduce the cuprate phase diagram with a reasonable $T_{\rm c}$ and dome structure, we keep track of the scattering processes that primarily affect $T_{\rm c}$. We find that local particle-particle diagrams significantly screen the bare interaction at low frequencies, which in turn suppresses antiferromagnetic spin fluctuations and hence the pairing interaction. Thus we identify dynamical vertex corrections as one of the main oppressors of $T_{\rm c}$, which may provide a hint toward higher $T_{\rm c}$'s., Comment: 6+5 pages, 5+6 figures

This study involves a 49-year-old male, who for three years suffered with a myelodysplastic syndrome and who needed frequent blood transfusions. One day following a transfusion, he presented fever and abdominal pain. The fever became persistent and only improved temporarily with two cycles of intravenous ciprofloxacin. Nearly 120 days after beginning the second cycle of treatment, he had experienced a weight loss of 16 kg and recurring fever. Screening for fever of unknown origin was conducted, including Bartonella infection. No etiology could be found. The patient improved with an antimicrobial regimen composed of oral doxycycline and intravenous ciprofloxacin. After 15 days afebrile, the patient was discharged with a four-month oral prescription of doxycycline and ciprofloxacin. Eight months following the antibiotic treatment, the patient received an allogeneic bone marrow transplant. Five days following the transplant, the patient initiated a febrile neutropenia and died. From a blood sample collected and stored at the time of hospitalization, a microbiological and molecular study was performed again. Blood- and liquid culture-PCRs from the same blood sample were all negative, but an isolate from solid subculture was found. The molecular reactions from this isolate were all positive and the sequence was 100% homologous to Bartonella henselae . The present report points to the limitations of laboratory techniques currently available for investigation of possible cases of bartonellosis in clinical practice, and the potential risk of Bartonella spp. transmission through blood transfusions.

Resumo Considerando a dispersão de sentidos que constitui a nomeação da área ‘Saúde do Trabalhador’, buscou-se compreender o que está em jogo nas constantes mudanças da nomenclatura nesse campo. Essas alterações ocorrem em uma linha do tempo, mas concomitantemente. Seu marco inaugural foi encontrado na estabilidade do nome ‘medicina do trabalho’, nome institucionalizado pela Organização Internacional do Trabalho, no início da segunda metade do século XX. Desse primeiro gesto de nomeação, seguem outros, estabelecidos em relações tensas e contraditórias de substituição, recobrimento e concorrência como: saúde ocupacional, saúde e segurança no trabalho, e, mais contemporaneamente, em meio a estas variações, encontrou-se o acréscimo do termo ‘Saúde do Trabalhador’. O penúltimo nome é o mais estável e acionado pelas instâncias internacionais e empresariais. Abstract Based on the dispersal of meanings that constitutes the naming of the ‘Health of the Worker’ field, we sought to comprehend what is at stake in the constant changes in nomenclature in this field. These changes occur within a timeline, but they happen concomitantly. Its inaugural landmark was found in the stability of the name ‘occupational medicine,’ a name institutionalized by the International Labour Organization in the beginning of the second half of the 20th century. This first gesture of naming was followed by other gestures, established in tense and contradictory relationships of replacement, recovering and concurrence, such as: occupational health, health and safety at work, and, more recently, among these variations, we found the addition of the term ‘Health of the Worker.’ The second-to-last name is the most stable one, and it is used by international and entrepreneurial organizations. Resumen Partiendo de la dispersión de sentidos que constituye la designación del área ‘Salud del Trabajador’, se buscó comprender lo que está en juego en los constantes cambios de la nomenclatura en este campo. Estos cambios se producen en una línea de tiempo, pero de forma concomitante. Su marco inaugural se encuentra en la estabilidad del nombre ‘medicina del trabajo’, institucionalizado por la Organización Internacional del Trabajo a comienzos de la segunda mitad del siglo XX. A este primer gesto de designación le siguen otros, establecidos en relaciones tensas y contradictorias de sustitución, enmascaramiento y competencia, tales como: salud ocupacional, salud y seguridad en el trabajo, y más recientemente, en medio de estas variaciones, se encontró el agregado del término ‘Salud del Trabajador’. El penúltimo nombre es el más estable y utilizado por las instancias internacionales y empresariales.

BACKGROUND Heart failure (HF) patients have a high readmission rate with approximately 20% of patients being readmitted within 30-days after discharge. Hospital interventions to reduce HF readmissions are resource- and effort-intensive. Widespread availability of electronic medical record data has spurred interest in using machine learning-based techniques for risk stratification of heart failure patients. The predictive performance of machine learning-based predictive models is often evaluated solely using the Area Under the Receiver Operating Characteristic (AUROC) curve. However, the AUROC is independent of prevalence therefore predictive models with the same AUROC can have differential clinical utility. Furthermore, the AUROC does not provide any insight about the presence of overfitting or decay in predictive performance of a model over time, both of which can affect its real-world performance. OBJECTIVE Our primary objective is to assess real-world performance of a 30-day readmission risk prediction model for HF patients, which had an AUROC of 0.71 in the training dataset. METHODS Predictions for risk of 30-day readmissions in HF patients in the Partners Healthcare System were prospectively obtained from the model. We assessed the positive (PPV) and negative predictive value (NPV), in addition to sensitivity, specificity, accuracy, model calibration and Brier score. RESULTS Four hundred twenty index admissions that were not part of the training dataset were included in this prospective evaluation. Readmission rate was 24% (101 30-day readmissions). The AUROC of the predictive model was 0.57. At a discrimination threshold of 0.2 for flagging high-risk index admissions, the sensitivity and specificity of the model were 53.46% and 63.32%, respectively. The PPV and NPV were 31.57% and 81.12%, respectively. The Brier score was 0.19. CONCLUSIONS Our analysis offers important insights about the real-world performance of this predictive model. The NPV suggests that the model’s prediction about patients at low risk for readmission are reliable. This insight can be useful in optimizing resource allocation for patients with heart failure.

The study of nonequilibrium phenomena in correlated lattice systems has developed into an active and exciting branch of condensed matter physics. This research field provides rich new insights that could not be obtained from the study of equilibrium situations, and the theoretical understanding of the physics often requires the development of new concepts and methods. On the experimental side, ultra-fast pump-probe spectroscopies enable studies of excitation and relaxation phenomena in correlated electron systems, while ultra-cold atoms in optical lattices provide a new way to control and measure the time-evolution of interacting lattice systems with a vastly different characteristic timescale compared to electron systems. A theoretical description of these phenomena is challenging because, firstly, we have to compute the quantum-mechanical time-evolution of many-body systems out of equilibrium, and secondly, deal with strong-correlation effects which can be of nonperturbative nature. In this review, we discuss the nonequilibrium extension of the dynamical mean field theory (DMFT), which treats quantum fluctuations in the time domain and works directly in the thermodynamic limit. The method reduces the complexity of the calculation via a mapping to a self-consistent impurity problem. Particular emphasis is placed on a detailed derivation of the formalism, and on a discussion of numerical techniques, which enable solutions of the effective nonequilibrium DMFT impurity problem. We summarize the insights gained into the properties of the infinite-dimensional Hubbard model under strong non-equilibrium conditions. These examples illustrate the current ability of the theoretical framework to reproduce and understand fundamental nonequilibrium phenomena, such as the dielectric breakdown of Mott insulators, photo-doping, and collapse-and-revival oscillations in quenched systems., Review article, including sample programs

In order to theoretically identify the factors governing superconductivity in multi-layer cuprates, a three-layer Hubbard model is studied with the two-particle self-consistent (TPSC) approach so as to incorporate electron correlations. The linearized Eliashberg equation is then solved for the gap function in a matrix form to resolve the role of outer CuO$_2$ planes (OPs) and inner plane (IP). We show that OPs dominate IP in the $d_{x^{2}-y^{2}}$-wave superconductivity, while IP dominates in the antiferromagnetism. This comes from an electron correlation effect in that the correlation makes the doping rates different between OPs and IP (i.e., a self-doping effect), which occurs in intermediate and strong correlation regimes. Namely, the antiferromagnetic fluctuations in IP are stronger due to a stronger electron correlation, which simultaneously reduces the quasiparticle density of states in IP with a suppressed $d_{x^{2}-y^{2}}$-wave superconductivity. Intriguingly, while the off-diagonal (inter-layer) elements in the gap function matrix are tiny, {\it inter-layer pair scattering} processes are in fact at work in enhancing the superconducting transition temperature $T_{\text{c}}$ through the inter-layer Green's functions. This actually causes the trilayer system to have higher $T_{\text{c}}$ than the single-layer in a weak- and intermediate-coupling regimes. This picture holds for a range of the on-site Hubbard repulsion $U$ that contains those estimated for the cuprates. The present result is qualitatively consistent with nuclear magnetic resonance experiments in multi-layer cuprates superconductors., 10 pages, 8 figures, to be submitted in Physical Review B

We investigate the terahertz (THz)-pulse-driven nonlinear response in the d-wave cuprate superconductor Bi_{2}Sr_{2}CaCu_{2}O_{8+x} (Bi2212) using a THz pump near-infrared probe scheme in the time domain. We observe an oscillatory behavior of the optical reflectivity that follows the THz electric field squared and is markedly enhanced below T_{c}. The corresponding third-order nonlinear effect exhibits both A_{1g} and B_{1g} symmetry components, which are decomposed from polarization-resolved measurements. A comparison with a BCS calculation of the nonlinear susceptibility indicates that the A_{1g} component is associated with the Higgs mode of the d-wave order parameter.

The iridescence-lacking pearl is regarded as a low-quality product because it shows no iridescent color which is generated by the interference of the light reflected at the organic–inorganic boundaries in the regulated interstratification of organic sheets and thin aragonite tablets. In this study, we investigated the microstructural difference between normal and iridescence-lacking pearls, as well as original nacreous layers in the shell of the pearl oyster, Pinctada fucata . Cross-sectional observation by scanning electron microscopy revealed abundant organic spherules of a few hundred nanometers in diameter attached to the inter-crystalline organic sheets in the iridescence-lacking pearl. The incoherent light scattered by the spherules inhibit the formation or emission of the iridescent color. The same spherules were also observed in hazy nacreous layers of the shell. The organic spherules often connected to the gap of inter-crystalline organic sheets implying that the spherules consist of same components of the organic sheets. Their abundance varies along the thickness of nacre, suggesting that their formation is determined by environmental factors, as well as genetic ones.