bluuebunny/crossref_metadata_2025_split huggingface dataset:
A novel metasurface lens antenna design for over‐the‐air testing in millimetre wave radio resource management measurement
Authors: Zhang Yu , Wang Zhiqin , Xue Zhiwen , Zhu Ying , Ren Yuxin 
Published: March 2023

AbstractIn millimetre wave (mmWave) frequency band, radio resource management (RRM) performance is characterised in plane wave conditions using radiated over‐the‐air test method, which is a challenging combination of protocol and radio frequency performance measurement. This article presents a novel design of multiple lens‐based compact antenna test ranges (CATRs) to simulate multiple angles of arrival from different base‐stations in RRM measurement. Only four lens‐based CATRs are proposed to create plane wave conditions at the device under test with six different angles of arrival and capable of accurately constructing the wireless propagation condition and minimising the diffraction and scattering between adjacent CATRs. The lens‐based CATR is the key element in the RRM measurement system, which is composed of a metasurface lens for phase alignment and a 2 × 2 feed array antenna for the emission of electromagnetic signals. The function and capability of the proposed lens‐based CATR is validated through simulation and measurement, that the worst‐case amplitude variation in the quiet zone region is lower than ±0.8 dB at 26 GHz, and phase variation is lower than ±7.5° in the designed quiet zone, which could be used in the fifth‐generation mmWave RRM measurement.
Kleintierdosimetrie für die diagnostische PET Bildgebung
Authors: Kranz Mathias 
Published: March 2023

ZusammenfassungVor der erstmaligen Anwendung neuartiger Radiopharmazeutika für die PET Bildgebung im Menschen muss deren Strahlenrisiko abgeschätzt werden. Neben ex vivo Methoden, welche die Verwendung von Tieren voraussetzt, bieten bildgebende in vivo Methoden unter Nutzung entsprechender Kleintierscanner die Möglichkeit Langzeitstudien durchzuführen und die Tiere für weitere Versuche zu verwenden. Aktuell stehen verschiedene kommerziell erhältliche PET Kameras speziell für Mäuse und Ratten zur Verfügung. Größere Spezies wie z. B. Ferkel können in humanen PET Scannern untersucht werden.Bei der Verwendung von anhand Tieren erhobener Daten für die Dosisabschätzung im Menschen, müssen deren Biokinetik auf den Menschen extrapoliert werden, um Unterschiede im Metabolismus und der Anatomie auszugleichen. Die anschließende Organdosisberechnung kann mit Hilfe verschiedener Software erfolgen (z. B. Olinda) und die effektive Dosis als Maß des kumulierten Strahlenrisikos abgeschätzt werden.Die Durchführung einer präklinischen Dosimetriestudie dient dem Ziel einer Abschätzung des Strahlenrisikos für das Individuum nach Inkorporation eines Radiopharmazeutikums. Es können kritische Organe und der Ausscheidungsweg identifiziert werden, jedoch sollten die Ergebnisse einer präklinischen Dosimetriestudie immer mit Hinblick auf die methodischen Limitationen betrachtet werden. Aktuelle Untersuchungen zeigen eine Unterschätzung der Exposition um bis zu 40 % und dies sollte bei der Beantragung einer frühen klinischen Studie berücksichtig werden.
Dosimetrie diagnostischer Radiopharmaka und Diagnostische Referenzwerte in der Nuklearmedizin
Authors: Sattler Bernhard , Kurth Jens 
Published: March 2023

ZusammenfassungDiese Übersichtsarbeit gibt einen Überblick über die, Grundsätze, Basisgrößen und Einheiten der Dosimetrie als Voraussetzung für das Verständnis der prinzipiellen Herangehensweisen bei der Inkorporationsdosimetrie bei der Anwendung von Radiopharmazeutika zu diagnostischen Zwecken. Die Grundlagen und Voraussetzung der dosimetrischen Berechnungen anhand von Biodistributions- und Biokinetikdaten werden eingeführt. Das Medical Internal Radiation Dose (MIRD) Konzept wird in seinen Grundzügen erläutert und die Historie und kontinuierliche Weiterentwicklung der dort zugrundeliegenden Körperphantome einschließlich der über sogenannte spezifische absorbierte Fraktionen (SAF → S-Werte) implementierten strahlenphysikalischen und rein geometrischen Quelle-Ziel-Beziehungen erläutert. Anhand eines Beispielprotokolls werden das Protokoll, die Datenakquisition und die inkorporationsdosimetrische Berechnung im Rahmen der Überprüfung der Sicherheit und Tolerabilität eines neuen PET-Radiopharmazeutikums vorgestellt. Die Größenordnung der sich ergebenden Exposition wird mit der bei therapeutischen Anwendungen verglichen bzw. von dieser abgegrenzt und es wird abgeleitet, dass für diagnostische Anwendungen keine individuelle Dosimetrie erforderlich ist und die Anwendung von standardisieren diagnostischen Referenzwerten der anzuwendenden Aktivitätsmengen für diagnostische Anwendungen gerechtfertigt ist. Das Konzept und die Erhebung sowie regelmäßige Aktualisierung der diagnostischen Referenzwerte für die Nuklearmedizin wird erläutert und deren Anwendung in der Routinediagnostik vorgestellt.
Bedeutung der Dosimetrie bei der Therapie aus Sicht der Medizinischen Physik
Authors: Lassmann Michael , Glatting Gerhard 
Published: March 2023

ZusammenfassungDer Beitrag der Medizinischen Physik zur Dosimetrie bei der Radionuklidtherapie umfasst die Qualitätssicherung der eingesetzten Geräte, die Erstellung von Protokollen zur prä- und peritherapeutischen Dosimetrie, die Planung der Therapien bzw. deren Verifikation sowie eigenständige Forschung zur Methodenentwicklung in der Dosimetrie. Eine nach dem Stand von Wissenschaft und Technik durchgeführte Dosimetrie ist gerade bei Therapien, die nicht als Standardtherapie anzusehen sind, von hoher Bedeutung. Zum einen ermöglicht die Dosimetrie zur Therapieplanung und –verifikation die Optimierung des Strahlenschutzes für die Patienten. Andererseits ist die Dosimetrie von großer Bedeutung für die Planung und praktische Umsetzung neuer Therapieverfahren sowie für die Gewinnung und Berücksichtigung strahlenbiologischer Erkenntnisse. In jedem Fall leistet die Medizinische Physik einen unverzichtbaren Beitrag zur Optimierung der Behandlung nuklearmedizinischer Patienten mit radioaktiven Substanzen.
Bedeutung der Dosimetrie aus Sicht des Nuklearmediziners
Authors: Kotzerke Jörg , Braune Anja , Burchert Wolfgang 
Published: March 2023

ZusammenfassungAuch wenn bei der Radionuklidtherapie die individuelle Dosimetrie unter Mitwirkung des Medizin-Physik-Experten in der Strahlenschutzverordnung (StrSchV) festgeschrieben ist, bestehen unterschiedliche Auffassungen über das Ausmaß der Datenerfassung und auch technische Limitationen im Hinblick auf eine valide Bildgebung zur Bestimmung der Biokinetik. Dabei ist für die klinische Anwendung stets eine einfache und robuste Approximation zu bevorzugen.Für wissenschaftliche Fragestellungen und für die Berücksichtigung der biologisch effektiven Dosis bedarf es jedoch valider Algorithmen, insbesondere für die Kombination interner und externer Radiotherapie. Die Anwendung von Alphastrahlern mit geringen Aktivitätsmengen und geringer Emissionswahrscheinlichkeit von Gammastrahlung zur Bilderzeugung zwingt jedoch teilweise, auf Standardaktivitätsmengen auszuweichen oder sich an Wirkung und Nebenwirkung analog zu anderer onkologischer Systemtherapie zu orientieren.
One Year Experience of the Hand Allotransplantation First Performed after Korea Organ Transplantation Act (KOTA) Amendment
Authors: Lee Nara , Baek Woo Yeol , Choi Yun Rak , Joo Dong Jin , Lee Won Jai , Hong Jong Won 
Published: March 2023

AbstractThe revision of the Korea Organ Transplantation Act (KOTA) in 2018 included hand/arm among the organs that can be transplanted. The first hand transplantation since the revision of KOTA took place in January 2021. A 62-year-old male patient experienced hand amputation on July 13, 2018, by a catapult injury. The patient first visited our institute 3 months after the injury. After serial interviews and an overall evaluation, the patient was registered on the hand transplantation waiting list in January 2020. On January 9, 2021, the patient underwent hand transplantation at the right distal forearm level. The total operation time was 17 hours 15 minutes, and the cold ischemic time was 4 hours 9 minutes. Postoperative immunosuppression was administered based on the protocol used for kidney transplantation. Two acute rejection episodes occurred, on postoperative days 33 and 41. Both rejection episodes were reversible with rescue therapy of a higher tacrolimus trough level, steroid pulse therapy, and topical immunosuppressants. Controlled passive range of motion exercise was started on postoperative day 10. Dynamic splint was applied on postoperative day 18. At 1 year, graft maintenance and functional improvement were satisfactory, and the patient showed a Disabilities of Arm, Shoulder and Hand score of 25.8. We successfully performed the first hand transplantation surgery under the KOTA amendment. It came from the organic and effective cooperation of plastic, orthopaedic, and transplantation departments and we believe it will guarantee the future ongoing success.
Cognitive Impairment in Neurodegenerative Movement Disorders
Authors: Abdelnour Carla , Poston Kathleen L. 
Published: March 2023

AbstractPatients with neurodegenerative movement disorders can develop cognitive impairment during the disease. Cognitive symptoms have been associated with decreased quality of life, higher caregiver burden, and earlier institutionalization, and are therefore critical for physicians to understand and address. The evaluation of cognitive performance of patients with neurodegenerative movement disorders is important for providing adequate diagnosis, management, prognosis, and support patients and their caregivers. In this review, we discuss the features of the cognitive impairment profile of commonly encountered movement disorders: Parkinson's disease, dementia with Lewy bodies, multiple system atrophy, progressive supranuclear palsy, corticobasal syndrome, and Huntington's disease. In addition, we provide neurologists with practical guidance and evaluation tools for the assessment and management of these challenging patients.
Can Utilizing Business Intelligence with Electronic Dental Record Data Improve Business Decisions for Dental Organizations: A Scoping Review
Authors: Walters Jared S. , Higgins Denise , Irving Michelle J. , Wallace Janet P. 
Published: March 2023

Abstract
Background Business intelligence can give businesses the ability to understand their strengths, weaknesses, and opportunities for improvement and can help reduce uncertainty in the decision-making process. With the increasing use of electronic dental records creating more and more dental data each day, it is an opportune time to determine if the data can be coupled with business intelligence systems to improve the management decision-making process in dental organizations to result in service improvement.
Methods A scoping review was performed to map the research on the use of business intelligence in dental organizations and to identify any gaps in the existing literature. This scoping review was conducted following the Preferred Reporting Items for Systematic reviews and Meta-Analyses extension for Scoping Reviews (PRISMA-Scr) framework. The following databases were searched: Medline, Embase, Emcare, Cinahl, Informit, Web of Science, and Scopus. Data extracted from the articles included the organization type, purpose/aims, the software utilized, data sources utilized, outcomes measured, decision-makers involved, service benefit type, and service improvements.
Results In all, 945 articles were found during the search strategy, with 25 articles selected for full-text review. Of these 25 articles, only 3 met the final inclusion in this review. All three included articles were centered around dental school organizations and all situated in the United States. All three articles demonstrated a benefit from management decision-makers utilizing business intelligence systems for improving service efficiency.
Conclusion There is limited evidence to show that managers utilizing business intelligence systems in dental school organizations can lead to improvements in the organization's services. There was no evidence to support the use of a business intelligence system in other types of dental organizations. More research is required in this area.
Hybrid Thoracic Aortic Repair and Aortic Valve-In-Valve Replacement for Chronic Type A Dissection
Authors: Albacker Turki B. , Alghamdi Faisal K. , Alsaleh Ayman , Aljabary Talal , Alshahrani Ali , Alhomiedan Majid , Zahran Fathi , Abdulrahman Yasser , Eldemerdash Ahmed , Bakir Bakir M. 
Published: March 2023

AbstractWe describe a case of hybrid total thoracic aortic repair and valve-in-valve transcatheter aortic valve replacement in a high-risk patient with complicated chronic type A dissection and severe prosthetic aortic stenosis. The patient underwent a three-stage-procedure including aortic arch debranching, thoracic endovascular aortic repair of the ascending aorta, aortic arch and descending thoracic aorta, and direct aortic valve-in-valve replacement using transcatheter heart valve. The details of the procedures are described with a discussion of the challenges and the decision-making process.
Facial Nerve Hemangioma of the Lateral Portion of the Internal Acoustic Canal: A Case Report and a Review of Literature
Authors: Monteiro J.M. , Ramos J.I.R. , H. Oliveira F. , Lavinsky J. , Isolan G.R. 
Published: March 2023

Abstract
Introduction Facial nerve hemangiomas (FNH) are rare tumors. Although it can occur in any portion of the nerve, it predominantly appears near the geniculate ganglion. We present a case of facial nerve hemangioma of an unusual location.
Case Report A 30-year-old woman presented with right-sided severe hearing loss and progressive facial palsy. Magnetic resonance showed a 5 mm lesion in the lateral portion of the right internal auditory canal. Due to facial palsy, the patient was submitted to a translabyrinthine approach and a total tumor resection, followed by hypoglossal-facial nerve anastomosis.
Discussion The facial nerve is susceptible in its path to expansive lesions, which have high morbidity. FNH is a rare and difficult-to-diagnose lesion. Computerized tomography and nuclear magnetic resonance can be used in its diagnosis. The differential diagnosis of FNH includes, in addition to schwannomas, meningiomas, cholesteatomas, paragangliomas, and other temporal bone tumors. There is no well-established consensus on the best approach. Because of its slow growth and benign behavior, some studies suggest conservative treatment and serial imaging. However, surgery is the cornerstone of treatment, as it is the only curative option.
Conclusion FNHs are often small but very symptomatic. Its high morbidity demands early diagnosis and, sometimes, surgical treatment.
Polycrystalline MnBi as a transverse thermoelectric material
Authors: Sola A. , Olivetti E. S. , Martino L. , Basso V. 
Published: March 2023

To assess the potential of polycrystalline MnBi as a transverse thermoelectric material, we have experimentally investigated its anomalous Nernst effect (ANE) by means of the heat flux method. We prepared MnBi samples by powder metallurgy; this technique allows the preparation of samples in arbitrary shapes with the possibility to tailor their magnetic properties. In the material exhibiting the highest remanent magnetization, we found a value of the ANE thermopower of −1.1 μV/K at 1 T, after the compensation of the ordinary Nernst effect from pure bismuth present inside the polycrystalline sample. This value is comparable with those reported in the literature for single crystals.
Nanostructured Si–Ge thermoelectric material for 1200 V/W highly sensitive infrared thermopile sensor device
Authors: Kakuyama Kyohei , Hirose Kotaro , Adachi Masahiro , Takeuchi Tsunehiro , Kimata Masafumi 
Published: March 2023

In this paper, we report the characteristics of a thermopile infrared sensor in which a nanostructured Si–Ge thermoelectric material is used. Although the thermopile infrared sensor is capable of being operated without power consumption, a challenge has been improving its sensitivity. With the aim of improving its sensitivity, we have realized a nanostructured Si–Ge thermoelectric material with low thermal conductivity (0.8 W/m K or less) by forming nanocrystals through heat treatment of amorphous Si–Ge. The thermopile infrared sensor composed of this material exhibited a high sensitivity of 1200 V/W at a pressure of 1.0 × 10−1 Pa or less.
Effects of dietary valine-to-lysine ratio on placenta growth, the placental nutrient transporters, and reproductive performance in sows
Authors: Wang Kai , Liu Junze , Zhao Liangyu , Li Yansen , Li Chunmei 
Published: March 2023

Context Valine-to-lysine ratio (V:L) in the diet has been found to affect the placental development of sows, and thus the production performance, but the mechanism is still unclear. Aim To investigate the effects of the V:L on placental growth and reproductive performance of sow. Methods Twenty-seven sows (average parities = 5) from 85 days of gestation were randomly assigned into five experimental groups with five ratios of total V:L of 0.75:1, 0.87:1, 0.99:1, 1.11:1, 1.23:1. Litter size was recorded. The placenta and colostrum were collected immediately after farrowing for mRNA analysis. Key results The results showed that dietary valine increased the sows’ placental area and the fetal-to-placental weight ratio (P < 0.05). Dietary valine does not affect the litter size of sows, but significantly reduces the delivery time and accelerates the delivery process. Dietary valine improved the average daily feed intake of the sows in the lactation (P < 0.05) and decreased the number of stillborns (P < 0.05). Additionally, the placental gene expression of LAT1, 4F2hc, LAT2, LAT3, SNAT1, SNAT2, and SNAT4 increased in the groups whose diet contained higher V:L ratios (P < 0.01). The increase in the ratio of dietary V:L increased the expression of GLUT1, GLUT3 and GLUT4 genes in the placenta tissue (P < 0.01). Conclusions The results suggested that suitable V:L positively affects pregnant and lactating sow’s performance. Implications Therefore, V:L can be adjusted to promote sow reproductive performance and increase production efficiency.
Initiating reason-for-the-call action in mundane mobile phone conversation
Authors: Kazemi Ali 
Published: March 2023

Abstract
This study takes as its analytic topic the identification of different sequentially organized phenomena endemic to initiation of reason-for-the call action in Farsi mobile calls. Using Conversation Analysis, through fine-grained analysis of participants’ observable orientation to the formulation of the reason for the call, it documents the trajectory of talk and the sequential phenomena associated with the statement of the reason for Farsi mobile phone calls. The findings suggest callers routinely perform the task of warranting their calls either by overtly announcing the reason, using the discourse marker of ‘migam’ (I meant to say) and its permutations or non-overtly, by positioning the reason for initiating the contact in anchor position, enabling their co-participants to pinpoint the warrant prompting the call out of various things said by callers and to relevantly respond to it. In addition, location enquiries figure in the reason-for-the-call, if seeking geographic information has localization purposes.
The Influence of Canine Ownership on Maternal and Fetal Microbiomes and Their Associated Health Outcomes: A Review of the Literature
Authors: Stenger Carrie 
Published: March 2023

Abstract

The human microbiome is the collection of microbes across both internal and external body sites that exist mutualistically with each person. There is a strong correlation between diverse microbial communities and improved health. Many factors influence microbial diversity including diet, exercise, medication use, and pet ownership. Canine ownership is touted as a direct and indirect means to combat modern overly hygienic conditions due to increased exposure to microbes in the outside environment. To examine this effect on maternal and fetal health, large-scale comparisons were made between various canine and human microbiomes. Microbes can be transferred from the mother’s gut, skin, oral, respiratory, vaginal, and placental microbiomes to her bloodstream and immune system. Here microbes are passed to the amniotic cavity where the fetus benefits from early exposure to these diverse microbes. Studies have consistently shown that canine ownership is linked to greater microbial diversity in both the mother and fetus. This includes beneficial microbes such as
Lactobacillus
species which decrease the risk of asthma and allergic reactions. It also confers benefits by decreasing the concentration of pathogenic or opportunistic microbes such as
Ureaplasma,
which is linked to preterm birth. The metabolites of these microbes also serve valuable roles, including short-chain fatty acids that provide a strengthened intestinal barrier and decreased HPA overactivity. This increased microbial diversity also correlates with enhanced immune system functioning as seen by decreased rates of allergic diseases, hypothalamic-pituitary-adrenal axis over-reactivity, inflammatory cytokines, and IgE-mediated reactions while enhancing NK cell function. This microbial diversity helps to prevent short-term negative outcomes including preterm birth and neonatal infections as well as long-term outcomes including cancer, diabetes, depression, dementia, gastrointestinal disease, and cardiovascular disease.
Andexanet alfa in acute aortic syndrome: first UK experience
Authors: Al-Attar Nawwar , Sedeek Ahmed F , McCall Philip , Travers Jennifer 
Published: March 2023

Abstract
Andexanet alfa was employed to reverse the anticoagulant effect of direct oral anticoagulants in 3 patients who required emergent surgery for repair of type A aortic dissection. Its use was instrumental in securing haemostasis. However, we caution against the administration of Andexanet alfa prior to cardiopulmonary bypass as it can induce heparin resistance and complicate the perioperative monitoring of anticoagulation during cardiopulmonary bypass.
Minimal Log Discrepancies of Regularity One
Authors: Moraga Joaquín 
Published: March 2023

Abstract
In this article, we use the cone of nef curves to study minimal log discrepancies. The first result is an improvement of the nef cone theorem in the case of log Calabi–Yau dlt pairs. Then, we prove that the ascending chain condition for $n$-dimensional minimal log discrepancies of regularity one holds around zero. Furthermore, we show that there exists an upper bound for the minimal log discrepancy of any $n$-dimensional klt singularity of regularity one.