bluuebunny/crossref_metadata_2025_split huggingface dataset:
Ultrafast and stable planar photodetector based on SnS2 nanosheets/perovskite structure
Authors: Shooshtari Leyla , Esfandiar Ali , Orooji Yasin , Samadpour Mahmoud , Rahighi Reza 
Published: September 2021

AbstractTwo-dimensional (2D) transition metal dichalcogenides are promising candidates of photodetectors where they are commonly grown parallel to the substrate due to their 2D characteristics in micrometer scales from exfoliation of bulk crystals or through high temperature chemical vapor deposition (CVD) methods. In this study, semi-hexagonal vertical nanosheets of SnS2 layered have been fabricated on FTO substrate without using Sn source through CVD method at relatively low temperature (500 °C). Due to exceptional band alignment of triple cation lead perovskite (TCLP) with semi-hexagonal SnS2 nanosheets, an improved photodetector has been fabricated. This type of photodetectors fabricated through lithography-free and electrodes metallization free approach with remarkable fast response (20.7 µs/31.4 µs as rising /falling times), showed high photoresponsivity, external quantum efficiency and detectivity of 1.84 AW−1, 513% and 1.69 × 1011, respectively under illumination of incident light with wavelength of 445 nm. The stability of the photodetectors has been studied utilizing a protective PMMA layer on the perovskite layer in 100% humidity. The introduced growth and fabrication process of the planar photodetector, including one/two dimensional interface through the edges/basal planes of layered materials with perovskite film, paves a way for the large scale, cost-effective and high-performance optoelectronic devices.
Retinal vessels modifications in acute and post-COVID-19
Authors: Invernizzi Alessandro , Schiuma Marco , Parrulli Salvatore , Torre Alessandro , Zicarelli Federico , Colombo Valeria , Marini Sara , Villella Elena , Bertoni Alice , Antinori Spinello , Rizzardini Giuliano , Galli Massimo , Meroni Luca , Giacomelli Andrea , Staurenghi Giovanni 
Published: September 2021

AbstractCoronavirus disease 2019 (COVID-19) is an infectious disease caused by SARS-CoV-2 primarily affecting the respiratory system which can damage vessels walls virtually in any body district. Changes affecting retinal vessels are a good marker for systemic vascular alterations. This study investigated retinal vessels during the acute phase of COVID-19 and after patients recovery. Fifty-nine eyes from 32 COVID-19 patients and 80 eyes from 53 unexposed subjects were included. Mean arteries diameter (MAD) and mean veins diameter (MVD) were assessed through semi-automatic analysis on fundus color photos at baseline and 6 months later in patients and subjects unexposed to the virus. At baseline MAD and MVD were significantly higher in COVID-19 patients compared to unexposed subjects (p < 0.0001). Both MAD and MVD significantly decreased in COVID-19 patients at follow-up (from 97.5 ± 10.9 to 92.2 ± 11.4 µm, p < 0.0001 and from 133.1 ± 19.3 to 124.6 ± 16.1 µm, p < 0.0001, respectively). Despite this reduction vessels diameter remained significantly higher in severe COVID-19 patients compared to unexposed subjects. Transient retinal vessels dilation could serve a biomarker for systemic inflammation while long-lasting alterations seen in severe COVID-19 likely reflect irreversible structural damage to the vessels walls and should be further investigated for their possible effects on tissues perfusion and function.
Infant’s Behaviour Checklist for low birth weight infants and later neurodevelopmental outcome
Authors: Kihara Hideki , Nakano Hisako , Nakamura Tomohiko , Gima Hirotaka 
Published: September 2021

AbstractAssessment of the characteristics of spontaneous movements and behaviour in early infancy helps in estimating developmental outcomes. We introduced the Infant Behaviour Checklist (IBC) and examined the relationship between the behavioural characteristics of low-birth-weight infants and neurodevelopmental outcomes at 6 years of age. The behavioural characteristics during the neonatal (36–43 weeks, adjusted) and early infancy periods (49–60 weeks, adjusted) were assessed in very-low-birth-weight infants. The IBC includes 44 common behaviours. We assessed the appearance of individual behavioural characteristics at each period according to the neurodevelopmental outcome. Of the 143 infants assessed during the neonatal period, 89 had typical development (TD), 30 had intellectual disability (ID), and 24 had autism spectrum disorder (ASD). In 78 infants assessed during early infancy, 40, 21, and 17 had TD, ID, and ASD, respectively. The frequency of appearance of three behaviour-related items was significantly lower in the ID group than in the TD group. The frequency of appearance of three posture- and behaviour-related items was significantly lower, while that of two posture-related items was significantly higher, in the ASD group than in the TD group. Behavioural assessment using the IBC may provide promising clues when considering early intervention for low-birth-weight infants.
Systematic review and meta-analysis on effectiveness and safety of the full-thickness resection device (FTRD) in the colon
Authors: Wannhoff Andreas , Meier Benjamin , Caca Karel 
Published: September 2021

Abstract
Background Endoscopic full-thickness resection (EFTR) has expanded the possibilities of endoscopic resection. The full-thickness resection device (FTRD, Ovesco Endoscopy, Tübingen, Germany) combines a clip-based defect closure and snare resection in a single device.
Methods Systematic review and meta-analysis on effectiveness and safety of the FTRD in the colon.
Results A total of 26 studies (12 published as full-text articles and 14 conference papers) with 1538 FTRD procedures were included. The pooled estimate for reaching the target lesion was 96.1 % (95 % confidence interval [95 % CI]: 94.6–97.1) and 90.0 % (95 % CI: 87.0–92.3) for technically successful resection. Pooled estimate of histologically complete resection was 77.8 % (95 % CI: 74.7–80.6). Adverse events occurred at a pooled estimate rate of 8.0 % (95 % CI: 5.8–10.4). Pooled estimates for bleeding and perforation were 1.5 % (95 % CI: 0.3–3.3) and 0.3 % (95 % CI: 0.0–0.9), respectively. The rate for need of emergency surgery after FTRD was 1.0 % (95 % CI: 0.4–1.8).
Conclusion The use of the FTRD in the colon shows very high rates of technical success and complete resection (R0) as well as a low risk of adverse events. Emergency surgery after colonic FTRD resection is necessary in single cases only.
Preterm Premature Rupture of Membranes – Inpatient Versus Outpatient Management: an Evidence-Based Review
Authors: Rath Werner , Maul Holger , Kyvernitakis Ioannis , Stelzl Patrick 
Published: September 2021

AbstractAccording to current guidelines, inpatient management until birth is considered standard in pregnant women with preterm premature rupture of membranes (PPROM). With the increasing burden on
obstetric departments and the growing importance of satisfaction and right to self-determination in pregnant women, outpatient management in PPROM is a possible alternative to inpatient
monitoring. The most important criterion for this approach is to ensure the safety of both the mother and the child. Due to the small number of cases (n = 116), two randomised controlled
trials (RCTs) comparing inpatient and outpatient management were unable to draw any conclusions. By 2020, eight retrospective comparative studies (cohort/observational studies) yielded the
following outcomes: no significant differences in the rate of maternal complications (e.g., chorioamnionitis, premature placental abruption, umbilical cord prolapse) and in neonatal
morbidity, significantly prolonged latency period with higher gestational age at birth, higher birth weight of neonates, and significantly shorter length of stay of preterm infants in
neonatal intensive care, shorter hospital stay of pregnant women, and lower treatment costs with outpatient management. Concerns regarding this approach are mainly related to unpredictable
complications with the need for rapid obstetric interventions, which cannot be performed in time in an outpatient setting. Prerequisites for outpatient management are the compliance of the
expectant mother, the adherence to strict selection criteria and the assurance of adequate monitoring at home. Future research should aim at more accurate risk assessment of obstetric
complications through studies with higher case numbers and standardisation of outpatient management under evidence-based criteria.
Die Auswirkung des Lockdowns während der COVID-19-Pandemie auf die Versorgung von elektiven Patienten (C-elective-Studie)
Authors: Willms Arnulf , Lock Johan Friso , Simbeck Alexandra , Thasler Wolfgang , Rost Wilm , Hauer Thorsten , Schaaf Sebastian , Germer Christoph Thomas , Schwab Robert , Oldhafer Karl Jürgen 
Published: September 2021

Zusammenfassung
Hintergrund Seit März 2020 wurden im Zuge der COVID-19-Pandemie verschiedene wiederkehrende Einschränkungen des elektiven operativen Regelbetriebs in den chirurgischen Kliniken vorgenommen. Die Auswirkung von OP-Absagen und Verschiebungen auf die Krankheitsverläufe sowie die Patientensicht der Maßnahmen sind unklar.
Patienten und Methode In der Phase des ersten Lockdowns (16.03.–24.04.2020) wurden alle Elektivpatienten aus den allgemeinchirurgischen Abteilungen von 6 Krankenhäusern eingeschlossen und anhand eines standardisierten Protokolls befragt.
Ergebnisse 225 Patienten nahmen teil. Bei 88 (39,1%) Patienten kam es zu einer Beschwerdeänderung, mehrheitlich in Form einer Zunahme der Symptome (82,6%). Überdurchschnittlich häufig waren dies Hernienpatienten (44,4%). In 4% der Fälle kam es zu einer operationspflichtigen Komplikation im Zeitintervall zwischen ursprünglichem Operationstermin und Befragung (40,7 ± 14,3 Tage). Für über ein Drittel der Patienten war die Verschiebung des OP-Termins mit erheblichem organisatorischem Aufwand verbunden. Die Mehrheit der Patienten (76,3%) hatte Verständnis für das Verschieben der Operation, obwohl immerhin 40,4% die Operation als sehr dringlich empfanden.
Diskussion und Schlussfolgerung Auch wenn die Gesamtkomplikationsrate gering und die Akzeptanz der Patienten hoch war, zeigten insbesondere Hernienpatienten einen Anstieg der Beschwerden und nicht wenige Inkarzerationen in einem kurzen Zeitintervall. Die engmaschige klinische oder auch telemedizinische Kontrolle scheint bei symptomatischen Patienten geboten, um in Zeiten begrenzter operativer Kapazität prioritäten- und risikoorientiert Eingriffe planen zu können.
SARS-CoV-2-Infektionen und klinische Konsequenzen bei
organtransplantierten Patienten im Rahmen der ersten Ansteckungswelle in
Deutschland - eine monozentrische Umfrage und ein Fallbericht
Authors: Brake Linda , Löffler Markus W. , Gründl Magdalena , Grishina Anna , Haeberle Helene , Berg Christoph , Guthoff Martina , Königsrainer Alfred , Nadalin Silvio , Quante Markus 
Published: September 2021

Zusammenfassung
Hintergrund Die SARS-CoV-2-Pandemie hat zu einer globalen Gesundheitskrise
mit hohen Mortalitätsraten insbesondere bei Betroffenen in Hochrisikogruppen
geführt. Eine stetig wachsende Zahl klinischer Fallberichte zeigt die Folgen von
COVID-19 bei Patienten nach solider Organtransplantation (SOT) und deutet auf
schwerwiegende klinische Auswirkungen und eine insgesamt hohe Sterblichkeit in
dieser Patientengruppe hin. Systematische Daten zu SARS-CoV-2-Infektionen bei
SOT-Empfängern in Deutschland fehlten zunächst jedoch weitgehend.
Patienten und Methoden Wir führten deshalb eine Umfrage zum
SARS-CoV-2-Infektionsstatus unter insgesamt 387 Patienten nach SOT durch, die in
den letzten 5 Jahren an unserem Zentrum transplantiert wurden. Die Umfrage wurde
2 Monate nach dem ersten SARS-CoV-2-Ausbruch in unserer relativ stark
betroffenen Region und den damit verbundenen staatlich verordneten
Einschränkungen durchgeführt.
Ergebnisse In unserer SOT-Kohorte wurde eine Rate von 0,4%
SARS-CoV-2-positiven Patienten ermittelt, was gut mit den lokalen
Infektionsraten in der Allgemeinbevölkerung zum damaligen Zeitpunkt
übereinstimmt. Allerdings führte die einzige uns in diesem Kollektiv bekannt
gewordene SARS-CoV-2-Infektion zu schwerer Morbidität mit verlängerter
mechanischer Beatmung, einem Krankenhausaufenthalt > 60 Tage und resultierte
letztlich im irreversiblen Verlust der Transplantatfunktion.
Schlussfolgerung Unsere Daten zeigen, dass SOT-Empfänger im Vergleich zur
Allgemeinbevölkerung zwar ein vergleichbares Risiko für eine
SARS-CoV-2-Infektion haben, diese jedoch mit der Gefahr von schwerwiegenderen
Verläufen assoziiert zu sein scheint.
The Impact of Coronavirus Disease 2019 (COVID-19) on Retinal Microcirculation in Human Subjects
Authors: Aydemir Emre , Aydemir Gozde Aksoy , Atesoglu Halil Ibrahim , Goker Yasin Sakir , Ozcelik Kazim Caglar , Kiziltoprak Hasan 
Published: September 2021

Abstract
Background The aim of the study was to assess retinal microcirculation in patients with coronavirus disease 2019 (COVID-19) through the use of optical coherence tomography angiography (OCT-A) and compare the results with those obtained in healthy controls.
Methods The study enrolled 39 patients who had fully recovered from COVID-19 and 40 healthy controls. OCT-A image acquisitions were obtained using AngioVue software (version 2017.1.0.151) and the RTVue XR Avanti imaging system (Optovue Inc., Fremont, CA, USA). Nonflow area in the superficial capillary plexus (SCP), foveal avascular zone (FAZ) area in the whole retinal vasculature, FAZ perimeter, acircularity index of FAZ, and foveal density were automatically obtained with the FAZ assessment tool. Vessel density (VD) at the SCP and deep capillary plexus were also measured.
Results Compared to the control group, the nonflow area and the FAZ area in the whole retina was greater in the COVID-19 group; however no statistically significant difference was observed (p > 0.05 respectively). As for vessel densities, all superficial parafoveal VD parameters were considerably higher in the COVID-19 group compared to the control group (p < 0.05 respectively). Despite the fact that the vessel densities in the remaining zones were lower in the COVID-19 group, those differences were not statistically significant (p > 0.05 respectively).
Conclusion VD at the parafoveal area of the SCP was significantly higher among patients in the late post-recovery period of COVID-19 disease compared to healthy controls. These findings show the impact of COVID-19 on the retinal microvasculature and its possible role as a risk factor for the development of ocular diseases.
Hat die COVID-19-Pandemie das Notfallgeschehen in deutschen Kliniken verändert? Eine bundesweite Analyse von Routinedaten aus 73 Akutkrankenhäusern
Authors: Koch Franziska , Hohenstein Sven , Bollmann Andreas , Meier-Hellmann Andreas , Kuhlen Ralf , Ritz Jörg-Peter 
Published: September 2021

ZusammenfassungCOVID-19 hat zu umfassenden Veränderungen der Welt, wie wir sie bisher kannten, geführt.
Durch den starken Anstieg intensivpflichtiger COVID-Patienten wurden beispielsweise elektive
Aufnahmen und Eingriffe verschoben. Aber auch Notfälle wie Myokardinfarkte gingen zurück. Die
hier vorliegende Studie hat sich mit den Auswirkungen der COVID-Pandemie auf
viszeralchirurgische Notfälle anhand von 5 Indikatoroperationen beschäftigt. Dafür wurden
Routinedaten aus 73 Akutkrankenhäusern der Helios-Gruppe ausgewertet. Eingeschlossen wurden
die Eingriffe, die zwischen dem 13.03.2020 und 12.03.2021 durchgeführt wurden. Verglichen
wurden die Daten mit dem Zeitraum vom 13.03.2019 bis zum 12.03.2020.Die Anzahl der Eingriffe bei schwerwiegenden Notfällen (Ileus, mesenteriale Ischämie und
Ulkusperforation) sind konstant geblieben. Die Liegedauer im Krankenhaus war im Pandemiejahr
2020 jedoch signifikant kürzer als im Vergleichsjahr 2019. Die Anzahl der Cholezystektomien
und Appendektomien war im Pandemiejahr signifikant geringer als im Vergleichsjahr 2019. Die
Outcome-Parameter intensivmedizinische Betreuung, invasive Beatmung und Krankenhausmortalität
waren zwischen den beiden Zeiträumen für die untersuchten Eingriffe vergleichbar.
Cooperative Rh(II)/Pd(0) Dual Catalysis for the Synthesis of Carbo- and Heterocyclic Compounds
Authors: Lee Sang-gi , Lee Kyu Ree , Lee Yu Lim , Choi Kyu In 
Published: September 2021

AbstractDual transition-metal catalysis has been introduced as a robust tool to synthesize a diverse range of organic compounds that cannot to be accessed by traditional single-metal catalysis. In this context, we have recently developed cooperative Rh(II)/Pd(0) dual catalytic systems that have been utilized for the preparation of heterocyclic compounds through the reaction between Rh(II)-carbenoid and π-allyl Pd(II)-complex intermediates in either synergistic or tandem relay catalysis. In synergistic Rh(II)/Pd(0) dual catalysis, the two reactive intermediates are generated simultaneously, which then undergo formal [6+3] dipolar cycloaddition to afford medium-sized heterocyclic compounds. On the other hand, tandem relay dual catalysis can be enabled through judicious choice of reaction parameters, which proceed through the insertion of Rh(II)-carbenoid into O–H or C–H bonds, followed by Pd(0)-catalyzed allylation to provide allylated benzo-fused cyclic compounds or chiral β-lactam derivatives.1	Introduction2	Synergistic Dual Rh(II)/Pd(0)-Catalyzed Dipolar [6+3]-Cycloaddition for the Synthesis of 1,4-Oxazonines3	Tandem Relay Dual Rh(II)/Pd(0) Catalysis for the Synthesis of 2-Aminoindanones4	Asymmetric Tandem Relay Dual Rh(II)/Pd(0) Catalysis for the Synthesis of α-Quaternary Chiral β-Lactams5	Tandem Relay Dual Rh(II)/Pd(0) Catalysis for the Synthesis of α-Quaternary Indolinones and Benzofuranones6	Conclusion
Postoperative Complications of Double Pelvic Osteotomy Using Specific Plates in 305 Dogs
Authors: Tavola Francesca , Drudi Dario , Vezzoni Luca , Vezzoni Aldo 
Published: September 2021

AbstractObjective The aim of this clinical retrospective study was to describe the postoperative complications and associated factors of double pelvic osteotomy (DPO) using DPO plates.Materials and Methods Medical records were searched for dogs that underwent unilateral or bilateral DPO using DPO plates from February 2009 to October 2018 and were re-evaluated for a minimum of 1 to 2 months postoperatively. A variety of commercially available, specific DPO plates were used. Complications were determined during the immediate postoperative period and at the time of the clinical and radiographic re-evaluations done 1 and/or 2 months postoperatively.Results A total of 458 DPO (226 right, 232 left) performed in 305 dogs satisfied the inclusion criteria. Double pelvic osteotomy plates from eight different manufacturers were used: Fixin (n = 160), Kyon (n = 154), New Generation Device (n = 63), Hofmann (n = 61), Veterinary Instrumentation (n = 12), DePuy Synthes (n = 4), Porte (n = 3) and Koenigsee (n = 1). Mean age of the dogs was 6.2 months (range: 5–8 months), and the body weight ranged from 10 to 47 kg. Overall, a total of 42 complications occurred in 38 DPO (8.2%). Complications included greenstick fracture of the ischium in 14 DPO (3%), isolated screw loosening in 13 DPO involving 16 of a total of 2,947 screws (0.5%), isolated screw breakage in 4 DPO involving 5 of 2,947 screws (0.1%), incomplete ilium fracture in 3 DPO (0.6%), partial caudal plate avulsion in 3 DPO (0.6%), iatrogenic sciatic neuropraxia in two DPO (0.4%), suspected surgical site infection (SSI) in 1 DPO (0.2%) and persistent pain and lameness caused by the implant in 2 DPO (0.4%). The case of suspected SSI and the two cases of persistent pain were classified as major complications (3 DPO, 0.6%), requiring medical and surgical intervention, respectively, whereas other 39 complications in 35 DPO were classified as minor, not requiring treatment (7.6%).Conclusion Double pelvic osteotomy using DPO plates appears to be a safe surgical option for the treatment of hip dysplasia in growing dogs; no catastrophic complications were reported and the incidence of complications (0.6% major complications and 7.6% minor complications) was low. This study showed that DPO using DPO plates and proper technique was safe in 92% of cases. The only two factors found to be significantly associated with the development of complications after DPO were the laterality (left-sided or right-sided) and body weight.
Orthognathic Surgery of the Mandible
Authors: Bahmanyar Sara , Namin Arya W. , Weiss Robert O. , Vincent Aurora G. , Read-Fuller Andrew M. , Reddy Likith V. 
Published: September 2021

AbstractOrthognathic surgery performed in conjunction with orthodontic treatment is commonly performed to correct skeletal irregularities and realign the maxillomandibular relationship to improve occlusal function and facial esthetics. A thorough understanding of soft tissue esthetics, skeletal and occlusal relationships, and surgical techniques is required to obtain successful results. Surgical techniques have evolved greatly throughout history, as technological advances such as virtual surgical planning have become available and widely used to obtain predictable movements with minimized complications. The aim of this article is to review the orthognathic surgical procedures of the mandible, with particular attention to the indications, contraindications, preoperative assessment, surgical technique, and possible complications encountered.
Yield determinants, root distribution and soil water uptake in maize (Zea mays) hybrids differing in canopy senescence under post-silking drought
Authors: Antonietta M. , Maydup M. L. , Cano M. G. , Fanello D. D. , Acciaresi H. A. , Guiamet J. J. 
Published: September 2021

Delayed canopy senescence or ‘stay-green’ (SG) trait in maize (Zea mays L.) could improve drought tolerance. Two field trials comparing four to six maize hybrids with different senescence rate were carried out at Buenos Aires, Argentina, varying water availability during the reproductive period. Green leaf area at maturity was related to kernel weight (r2 = 0.94***) but its relationship with yield was weaker (r2 = 0.51–53*) and post-silking dry matter remobilisation was negatively related with the SG trait (r2 = 0.84**). Two additional experiments were carried out in 63 L pots by withholding irrigation in half of the pots after silking. The SG hybrid achieved lower root biomass at silking, a shallower root distribution and larger root growth in the post-silking period. Under drought conditions, stomatal conductance was lower in the SG hybrid but photosynthetic electron transport rate was higher. Higher post-silking dry matter assimilation in the SG hybrid was compensated for by higher dry matter remobilisation in the non-SG. Higher kernel number per plant in the non-SG hybrid with no ability to compensate for by higher kernel weight in the SG, resulted in slightly higher yields in the non-SG under drought. A water conservation strategy associated with a shallower root system could be linked to the SG trait, promoting faster water depletion at upper soil levels and reduced stomatal conductance at the leaf level but with no conclusive yield advantage.