Primary Rosai-Dorfman Disease in 39-Year-Old Woman With Osseous Tibial Lesion Manifestion: A Case Report and Literature Review

Rosai-Dorfman disease (RDD), otherwise known as sinus histiocytosis with massive lymphadenopathy (SHML), is a very rare and typically benign disorder of unknown etiology with <10% bone involvement. The report is of a case seen at the authors’ hospital of a patient presenting with several months’ onset unspecified nontraumatic ankle pain. There was no physical mass or lymphadenopathy appreciated on examination. Plain radiographs and magnetic resonance images demonstrated an osteolytic lesion at the medial malleolus. Biopsy revealed the diagnosis of intraosseous manifestation of Rosai-Dorfman disease.

Gravitational wave signatures from domain wall and strong first-order phase transitions in a two complex scalar extension of the Standard Model

We consider a simple extension of Standard Model by adding two complex singlet scalars with a U(1) symmetry. A discrete $$ {\mathcal{Z}}_2\times {\mathcal{Z}}_2^{\prime } $$ Z 2 × Z 2 ′ symmetry is imposed in the model and the added scalars acquire a non zero vacuum expectation value (VEV) when the imposed symmetry is broken spontaneously. The real (CP even) parts of the complex scalars mix with the SM Higgs and give three physical mass eigenstates. One of these physical mass eigenstates is attributed to the SM like Higgs boson with mass 125.09 GeV. In the present scenario, domain walls are formed in the early Universe due to the breaking of discrete $$ {\mathcal{Z}}_2\times {\mathcal{Z}}_2^{\prime } $$ Z 2 × Z 2 ′ symmetry. In order to ensure the unstability of the domain wall this discrete symmetry is also explicitly broken by adding a bias potential to the Lagrangian. The unstable annihilating domain walls produce a significant amount of gravitational waves (GWs). In addition, we also explore the possibility of the production of GW emission from the strong first-order phase transition. We calculate the intensities and frequencies of each of such gravitational waves originating from two different phenomena of the early Universe namely annihilating domain walls and strong first-order phase transition. Finally, we investigate the observational signatures from these GWs at the future GW detectors such as ALIA, BBO, DECIGO, LISA, TianQin, Taiji, aLIGO, aLIGO+ and pulsar timing arrays such as SKA, IPTA, EPTA, PPTA, NANOGrav11 and NANOGrav12.5.

Mediated Catholic Mass During the COVID-19 Pandemic: On Communication, Technology and Spiritual Experience

The COVID-19 pandemic has prompted Catholic churches in Indonesia to conduct physical distancing, close their doors and move mass to online media or television. This situation is something extraordinary for the Catholic church which is known to adhere to tradition in the implementation of its worship. This study aims to determine the experience of Catholics in conducting mediated worship using Religious-Social Shaping of Technology examining and concepts, namely social affordance, religion-online/online-religion, and digital media law. This qualitative research is done by interviewing six informants using descriptive phenomenological approach. The results of the study indicate four main findings. First, informants have the freedom to choose the tools or channels to attend the mediated mass. Second, the interactivity in the mediated mass is lost. Third, the atmosphere of the mediated mass can have an impact on the solemnity of worship. Fourth, the use of technology for mediated mass cannot absolutely be paralleled with physical worship, but some informants still hope that the mediated mass will be held after this pandemic. This research concludes that mediated mass during a pandemic is not as ideal as a physical mass because the experience gained is not optimal, but it opens up wider opportunities to reach people who may not be physically present in church from anywhere. Academically, this research is expected to increase the wealth of knowledge about mediated worship during a pandemic. Meanwhile, in practical terms, this research can be a reference for the church to improve its overall quality. Pandemi COVID-19 membuat gereja Katolik di Indonesia melakukan physical distancing bahkan menutup pintunya dan mengalihkan misa ke media daring atau televisi. Keadaan ini merupakan sesuatu yang luar biasa bagi gereja Katolik yang terkenal memegang teguh tradisi dalam pelaksanaan ibadahnya. Penelitian ini memiliki tujuan yaitu ingin mengetahui pengalaman umat Katolik dalam melakukan ibadah termediasi dengan menggunakan Religious-Social Shaping of Technology serta beberapa konsep lain, yaitu social affordance, religion-online/online-religion, dan hukum media digital. Adapun pelaksanaan penelitian kualitatif ini adalah dengan mewawancarai enam informan menggunakan pendekatan fenomenologi deskriptif. Hasil penelitian ini menunjukkan empat temuan utama. Pertama, informan memiliki kebebasan untuk memilih alat maupun kanal untuk mengikuti misa termediasi. Kedua, interaktivitas dalam misa termediasi menjadi hilang. Ketiga, suasana misa termediasi bisa berdampak pada kekhusyukan saat beribadah. Keempat, pemanfaatan teknologi untuk misa termediasi memang tidak bisa mutlak disejajarkan dengan ibadah fisik namun sebagian informan tetap mengharapkan misa termediasi dilakukan setelah masa pandemi ini. Penelitian ini menyimpulkan bahwa misa termediasi selama pandemi memang tidak seideal misa fisik karena pengalaman yang diraih tidaklah maksimal, namun membuka peluang lebih luas untuk menjangkau orang-orang yang tidak mungkin hadir secara fisik di gereja dari mana saja.Secara akademis penelitian ini diharapakan dapat meningkatkan khazanah pengetahuan tentang ibadah termediasi pada saat pandemi. Sementara secara praktis, penelitian ini dapat menjadi acuan bagi gereja untuk meningkatkan kualitas secara menyeluruh.

An energy-robust nonlinear energy sink with inerter

<p>This paper presents an inerter-enhanced nonlinear mass damper developed from an asymmetric nonlinear energy sink (Asym NES), which adds an inerter between the auxiliary mass of the Asym NES and a fixed point. The size of the Asym NES-inerter (Asym NESI) can be significantly reduced due to the inerter providing a large inertial effect with limited physical mass involved. The design concept of the Asym NESI will be described first. Subsequently, the performance of the Asym NESI will be evaluated on a three-story frame structure through computational investigations. Results show that the Asym NESI exhibites strong robustness against changes in both energy level and structural frequency. Driven by the inertial effect, the Asym NESI is excellent in control performance and installation flexibility under the seismic excitation considered, demonstrating great potential as a superior control strategy for response mitigation of building structures.</p><p><br clear="none"/></p>

Exact H2 Optimal Solutions to a SDOF System With Electromagnetic Tuned Inerter Damper for Vibration Control

In order to improve the performance of the tuned mass damper (TMD) with a smaller physical mass for machining vibration suppression and energy harvesting, a dual-functional inerter-based damper, called electromagnetic tuned inerter damper (ETID), is proposed. To evaluate the performance of the ETID, the model of coupled ETID and a single degree of freedom (SDOF) system has been established. The H2 optimal design of the ETID-SDOF system has been conducted, whose goal is to minimize the value of the root mean square (RMS) of the displacement and absolute acceleration of the SDOF system. The analytical solutions of the design parameters of the ETID-SDOF system, namely, frequency ratio and damping ratio, have been derived. The control performance and robustness for the undamped SDOF system with ETID have been evaluated via parametric study compared with the undamped SDOF system with the TMD system. The potential other layouts of the ETID are also discussed. The influence of the structural damping on design parameters and performance has also been investigated.

Great Mistake of Great J. C. Maxwell

The Maxwell’s vicious electromagnetic concept which can also be defined as electric magnetism occurred as a result of superficial and, exclusively, erroneous impression of the Great Theorist on the famous Oersted Experience. The fateful concept for physical science: “electrons moving in a conductor are direct sources of a magnetic field”, was put forward by Maxwell in the absence of knowledge of real physical processes occurring in a conductor with an electric current. Paradoxical as it may see but this vicious concept, again thanks to the outward impression, has been accepted by the world physical community and dominates in physical science for almost 150 years, as an absolute truth. As the result the true sources of the magnetic field - real magnetic poles (magnetic charges) which are the structural components of atoms and substance, were “buried alive”. It is Maxwell’s vicious electric magnetism that suppressed the interest of scientists in the search for and detection of real magnetic charges in atoms and substance and pushed of the physical theory into the “swamp” of relativism. The author’s experimental and theoretical studies have shown that a main reason for ignoring magnetic charges and, and therefore, the emergence of a vicious concept of electric magnetism, is the radically different physics of the confinement of electrons and magnetic charges in the structures of Physical mass (in atoms, nucleons, substance and others).

The growth of brightest cluster galaxies and intracluster light over the past 10 billion years

ABSTRACT We constrain the evolution of the brightest cluster galaxy plus intracluster light (BCG + ICL) using an ensemble of 42 galaxy groups and clusters that span redshifts of z = 0.05−1.75 and masses of M500,c= 2 × 1013−1015 M⊙. Specifically, we measure the relationship between the BCG + ICL stellar mass M⋆ and M500,c at projected radii 10 &lt; r &lt; 100 kpc for three different epochs. At intermediate redshift ($\bar{z}=0.40$), where we have the best data, we find M⋆ ∝ M500,c0.48 ± 0.06. Fixing the exponent of this power law for all redshifts, we constrain the normalization of this relation to be 2.08 ± 0.21 times higher at $\bar{z}=0.40$ than at high redshift ($\bar{z}=1.55$). We find no change in the relation from intermediate to low redshift ($\bar{z}=0.10$). In other words, for fixed M500,c, M⋆ at 10 &lt; r &lt; 100 kpc increases from $\bar{z}=1.55$ to $\bar{z}=0.40$ and not significantly thereafter. Theoretical models predict that the physical mass growth of the cluster from z = 1.5 to z = 0 within r500,c is 1.4×, excluding evolution due to definition of r500,c. We find that M⋆ within the central 100 kpc increases by ∼3.8× over the same period. Thus, the growth of M⋆ in this central region is more than a factor of 2 greater than the physical mass growth of the cluster as a whole. Furthermore, the concentration of the BCG + ICL stellar mass, defined by the ratio of stellar mass within 10 kpc to the total stellar mass within 100 kpc, decreases with increasing M500,c at all z. We interpret this result as evidence for inside–out growth of the BCG + ICL over the past 10 Gyr, with stellar mass assembly occurring at larger radii at later times.