bluuebunny/crossref_metadata_2025_split huggingface dataset:
A Cross Sectional Study on Prevalence of Postpartum Depression among Recently Delivered Women in a Tertiary Care Hospital, Chennai, India
Authors: Sita V. K. , Meenakshi . 
Published: February 2022

Background: Postpartum depression is a common type of depression most people are not much aware and the most important causes being poverty, unwanted child/gender, marital disharmony and lack of family support.
Aim: The aim of the study was to assess the prevalence of postpartum depression among recently delivered women in a tertiary care hospital in an urban setup.
Methodology: It was a cross sectional type of study in urban population in a tertiary care hospital in Chennai. Data on postpartum depression was collected using Edinburgh Postnatal Depression Scale (EDPS).
Results: A total 165 postpartum women participated in the study. The prevalence of postpartum depression was found to be 19.23% (an EPDS score of 10 and above) and it was noted in our study that none of these women sort to any medical help.
Conclusion: The study shows prevalence of postpartum depression is quite high and none of those women seeked appropriate medical help. All health care professionals have to be trained to raise awareness, detect and treat postpartum depression among women promptly.
Correlation between Prostate Specific Antigen (PSA) Level and Various Prostatic Diseases on Biopsies: A Retrospective Study
Authors: Padmapriya B. S. , Harikrishnan Volga 
Published: February 2022

Introduction: The prostate is a pear-shaped glandular organ that adds part of fluid to semen. The prostate consists of stromal and glandular components. Prostate needle biopsy is performed either transrectal ultrasound (TRUS) guided or transurethral routes. PSA is a glycoprotein produced by secretory cells. Normally the PSA levels are less than 4.0ng/ml.
Aim: The main aim of the study is to find out the correlation between various pathological lesions occur in the prostate and serum Prostate Specific Antigen (PSA) level.
Study Design: A retrospective study.
Place and Duration of Study: Department of Pathology,Saveetha Medical college and Hospital, between January 2019 and December 2019.
Methodology: A retrospective study of 84 prostatic biopsies for a period of 1 year in the year 2019 was carried out. All specimens subjected for histopathological examination and the relevant clinical data and Serum PSA values correlation was done.
Results: Commonest age group being 61-70 years. Difficulty in micturition was the most common presentation .Most common lesion found was Benign Prostatic Hypertrophy(BPH) constituting 67 cases (71.42%) followed by BPH with prostatitis 17 cases (20.23%), adenocarcinoma 6 cases (7.14%) and 1 case of Prostatic Intraepithelial Neoplasia (PIN) (1.19%). BPH patients, had S.PSA levels in the range of 4.1-15 ng/ml. Three cases of adenocarcinoma showed very high levels of S.PSA (>100 ng/ml) with the Gleason score of 9(5+4).
Conclusion: Both benign and malignant pathologies can cause an increase in serum PSA levels, but the chances of finding malignancy increases with rising values of PSA. But in the management of prostatic cancer the histopathological diagnosis and grading plays a definitive role.
Partner perception and participation in prenatal and birth care / Percepção e participação do parceiro na assistência pré-natal e nascimento
Authors: De Souza Santos Rubia Mariana , Francisqueti Marquete Verônica , Cazetta de Lima Vieira Viviane , Leopoldo de Freitas Goes Herbert , De Oliveira Moura Débora Regina , Silva Marcon Sonia 
Published: February 2022

Objetivo: compreender a percepção do parceiro sobre sua experiência e participação na assistência pré-natal e nascimento. Método: estudo de abordagem qualitativa realizado com 26 pais abordados no período de outubro a novembro de 2020, mediante entrevistas por mídia digital áudio gravadas. Utilizada análise de conteúdo, modalidade temática. Resultados: emergiram três categorias as quais mostram que eles tiveram pouca participação nas consultas de pré-natal e que desconhecem o “pré-natal do parceiro”. Em geral, demonstram gratidão pela assistência durante o parto, mas poucos relataram ter recebido informações relacionadas à educação em saúde. Considerações finais: os homens reconhecem que como pais, têm responsabilidade em acompanhar a assistência pré-natal, percebem os benefícios desta participação, mas não se sentem acolhidos e nem incentivados a participar e não têm suas necessidades de saúde consideradas, o que precisa ser revisto pelos profissionais de saúde, em especial o enfermeiro.
Association Between Handover of Anesthesiology Care and 1-Year Mortality Among Adults Undergoing Cardiac Surgery
Authors: Sun Louise Y. , Jones Philip M. , Wijeysundera Duminda N. , Mamas Mamas A. , Bader Eddeen Anan , O’Connor John 
Published: February 2022

ImportanceHandovers of anesthesia care from one anesthesiologist to another is an important intraoperative event. Despite its association with adverse events after noncardiac surgery, its impact in the context of cardiac surgery remains unclear.ObjectiveTo compare the outcomes of patients who were exposed to anesthesia handover vs those who were unexposed to anesthesia handover during cardiac surgery.Design, Setting, and ParticipantsThis retrospective cohort study in Ontario, Canada, included Ontario residents who were 18 years or older and had undergone coronary artery bypass grafting or aortic, mitral, tricuspid valve, or thoracic aorta surgical procedures between 2008 and 2019. Exclusion criteria were non-Ontario residency status and other concomitant procedures. Statistical analysis was conducted from April 2021 to June 2021, and data collection occurred between November 2020 to January 2021.ExposuresComplete handover of anesthesia care, where the case is completed by the replacement anesthesiologist.Main Outcomes and MeasuresThe coprimary outcomes were mortality within 30 days and 1 year after surgery. Secondary outcomes were patient-defined adverse cardiac and noncardiac events (PACE), intensive care unit (ICU), and hospital lengths of stay (LOS). Inverse probability of treatment weighting based on the propensity score was used to estimate adjusted effect measures. Mortality was assessed using a Cox proportional hazard model, PACE using a cause-specific hazard model with death as a competing risk, and LOS using Poisson regression.ResultsOf the 102 156 patients in the cohort, 25 207 (24.7%) were women; the mean (SD) age was 66.4 (10.8) years; and 72 843 of surgical procedures (71.3%) were performed in teaching hospitals. Handover occurred in 1926 patients (1.9%) and was associated with higher risks of 30-day mortality (hazard ratio [HR], 1.89; 95% CI, 1.41-2.54) and 1-year mortality (HR, 1.66; 95% CI, 1.31-2.12), as well as longer ICU (risk ratio [RR], 1.43; 95% CI, 1.22-1.68) and hospital (RR, 1.17; 95% CI, 1.06-1.28) LOS. There was no statistically significant association between handover and PACE (30 days: HR 1.09; 95% CI, 0.79-1.49; 1 year: HR 0.89; 95% CI, 0.70-1.13).Conclusions and RelevanceHandover of anesthesia care during cardiac surgical procedures was associated with higher 30-day and 1-year mortality rates and increased health care resource use. Further research is needed to evaluate and systematically improve the handover process qualitatively.
A transit portal dosimetry method for respiratory gating quality assurance with a dynamic 3D printed tumor phantom
Authors: Tan Hong Qi , Koh Calvin Wei Yang , Tan Lloyd Kuan Rui , Lew Kah Seng , Chua Clifford Ghee Ann , Ang Khong Wei , Lee James Cheow Lei , Park Sung Yong 
Published: February 2022

AbstractBackgroundsRespiratory gating is one of the motion management techniques that is used to deliver radiation dose to a tumor at a specific position under free breathing. However, due to the dynamic feedback process of this approach, regular equipment quality assurance (QA) and patient‐specific QA checks need to be performed. This work proposes a new QA methodology using electronic portal imaging detector (EPID) to determine the target localization accuracy of phase gating.MethodsQA tools comprising 3D printed spherical tumor phantoms, programmable stages, and an EPID detector are characterized and assembled. Algorithms for predicting portal dose (PD) through moving phantoms are developed and verified using gamma analysis for two spherical tumor phantoms (2 cm and 4 cm), two different 6 MV volumetric modulated arc therapy plans, and two different gating windows (30%–70% and 40%–60%). Comparison between the two gating windows is then performed using the Wilcoxon signed‐rank test. An optimizer routine, which is used to determine the optimal window, based on maximal gamma passing rate (GPR), was applied to an actual breathing curve and breathing plan. This was done to ascertain if our method yielded a similar result with the actual gating window.ResultsHigh GPRs of more than 97% and 91% were observed when comparing the predicted PD with the measured PD in moving phantom at 2 mm/2% and 1 mm/1% levels, respectively. Analysis of gamma heatmaps shows an excellent agreement with the tumor phantom.The GPR of 40%–60% PD was significantly lower than that of the 30%–70% PD at the 1 mm/1% level (p = 0.0064). At the 2 mm/2% level, no significant differences were observed. The optimizer routine could accurately predict the center of the gating window to within a 10% range.ConclusionWe have successfully performed and verified a new method for QA with the use of a moving phantom with EPID for phase gating with real‐time position management.
Gate‐Deterministic Remote Doping Enables Highly Retentive Graphene‐MXene Hybrid Memory Devices on Plastic
Authors: Kim Seongchan , Jo Sae Byeok , Kim Jihyun , Rhee Dongjoon , Choi Yoon Young , Kim Do Hwan , Kang Joohoon , Cho Jeong Ho 
Published: February 2022

AbstractIn this work, a highly retentive and synaptic‐functional transistor memory device architecture based on the gate‐deterministic remote doping of graphene via surface‐oxidized Ti3C2TX MXene nano‐floating‐gates (NFG) is presented. By using solution‐phase size‐sorting followed by controlled surface oxidation process, a regulated distribution of MXene nanoflakes comprising metallic Ti3C2TX as the core surrounded by TiO2‐a high dielectric constant insulator‐as the shell is achieved. The size‐sorted core/shell‐like MXene nanoflakes show a self‐sustainable charge trapping/detrapping behavior, which is highly feasible for realizing non‐embed NFGs for transistor memory devices. Interestingly, unlike the conventional NFG‐embedded architecture, the introduction of core/shell‐like MXene under an electrolyte‐gated graphene field‐effect transistor (GFET) architecture induces a cooperative evolution of the hysteresis loop associated with ionic motion in the electrolyte gates and charge trapping/detrapping in the nanoflakes, resulting in a deterministic remote doping of the graphene layer. The resulting device exhibited a highly retentive memory behavior, which can be optimized by the nanoflake size distribution. In addition, synaptic functions having mechanical flexibility can be successfully emulated using MXene‐based GFETs fabricated on a flexible polyethylene naphthalate substrate.
A New Era of Integrative Ice Frozen Assembly into Multiscale Architecturing of Energy Materials
Authors: Yeon Jeong Seok , Gupta Nisha , Bhattacharya Pallab , Park Ho Seok 
Published: February 2022

AbstractThe ice templating assembly has been investigated to construct macroporous channels of functional nanomaterials with well‐defined homogeneous morphology. Recently, this templating method has been revisited integrating with other materials’ synthesis and processing methodologies (such as, spinning, spraying, filtration, hydrothermal, oxygenation, gelation, and 3D printing) for electrochemical energy conversion and storage applications. Herein, the recent progress on “integrative ice frozen assembly” focusing on the hierarchical structures and chemistries of functional nanomaterials such as, organic, inorganic, carbon, and composite materials for a rational design of energy application‐oriented materials is comprehensively reviewed. This integrative process allows functional nanomaterials to be assembled into various dimensions, such as, 0D, 1D, 2D, and 3D macrostructures, as well as, into larger bulk objects such as, fibers, films, monoliths, and powders. The fundamental understanding of the integrative ice frozen assembly is thermodynamically and kinetically discussed with the help of primitive freeze casting domain knowledge and the energy conversion and storage performances of the as‐designed electrodes with their hierarchical structures and chemistries are further correlated. The applications of the as‐assembled electrodes into batteries, supercapacitors, fuel cells, and electrocatalysis are also addressed. Finally, the perspective on the current impediments and future directions in this field is discussed.
Superior Nonlinear Optical Response in Non‐Centrosymmetric Stacking Edge‐Rich Spiral MoTe2 Nanopyramids
Authors: Ouyang Decai , Tong Xipeng , Liu Shenghong , Wang Jing , Zhao Yang , Liu Ran , Zhao Xuan , Zhang Na , Cao Fengren , Liu Youwen , Li Yuan , Li Liang , Zhai Tianyou 
Published: February 2022

AbstractTransition metal dichalcogenides (TMDs) are of great promise for various nonlinear optical (NLO) applications due to their unique electronic and optoelectronic properties, such as tunable optical bandgap, strong spin–orbit coupling, and exciton effects. However, the desired NLO performances of regular 2H‐TMDs are usually restricted by their limited absorption at atomic thickness. With this regard, a structurally novel spiral MoTe2 (s‐MoTe2) nanopyramids is reported with unique and superior NLO response, enabled by their broken inversion symmetry, weak interlayer coupling, exciton resonance, and strong light–matter interaction from the edge‐rich 3R‐like quasi‐multilayer structure. The excellent NLO response over a wide spectral range from the near‐infrared to visible region is demonstrated, where second‐ and third‐order NLO responses have been simultaneously observed. Moreover, the second‐order nonlinear susceptibility of s‐MoTe2 is estimated to be around 1–2 order(s) of magnitude larger than those of most reported TMDs. The demonstration of a superior NLO response in such s‐MoTe2 not only paves a new way for designing the best NLO TMD structures, but also greatly prompts their practical applications in micro–nano NLO devices on chips in future.
Redox‐Active Metaphosphate‐Like Terminals Enable High‐Capacity MXene Anodes for Ultrafast Na‐Ion Storage
Authors: Sun Boya , Lu Qiongqiong , Chen Kaixuan , Zheng Wenhao , Liao Zhongquan , Lopatik Nikolaj , Li Dongqi , Hantusch Martin , Zhou Shengqiang , Wang Hai I. , Sofer Zdeněk , Brunner Eike , Zschech Ehrenfried , Bonn Mischa , Dronskowski Richard , Mikhailova Daria , Liu Qinglei , Zhang Di , Yu Minghao , Feng Xinliang 
Published: February 2022

Abstract2D transition metal carbides and/or nitrides, so‐called MXenes, are noted as ideal fast‐charging cation‐intercalation electrode materials, which nevertheless suffer from limited specific capacities. Herein, it is reported that constructing redox‐active phosphorus−oxygen terminals can be an attractive strategy for Nb4C3 MXenes to remarkably boost their specific capacities for ultrafast Na+ storage. As revealed, redox‐active terminals with a stoichiometric formula of PO2‐ display a metaphosphate‐like configuration with each P atom sustaining three PO bonds and one PO dangling bond. Compared with conventional O‐terminals, metaphosphate‐like terminals empower Nb4C3 (denoted PO2‐Nb4C3) with considerably enriched carrier density (fourfold), improved conductivity (12.3‐fold at 300 K), additional redox‐active sites, boosted Nb redox depth, nondeclined Na+‐diffusion capability, and buffered internal stress during Na+ intercalation/de‐intercalation. Consequently, compared with O‐terminated Nb4C3, PO2‐Nb4C3 exhibits a doubled Na+‐storage capacity (221.0 mAh g‐1), well‐retained fast‐charging capability (4.9 min at 80% capacity retention), significantly promoted cycle life (nondegraded capacity over 2000 cycles), and justified feasibility for assembling energy−power‐balanced Na‐ion capacitors. This study unveils that the molecular‐level design of MXene terminals provides opportunities for developing simultaneously high‐capacity and fast‐charging electrodes, alleviating the energy−power tradeoff typical for energy‐storage devices.
Micrometer‐Sized SiMgyOx with Stable Internal Structure Evolution for High‐Performance Li‐Ion Battery Anodes
Authors: Tian Yi‐Fan , Li Ge , Xu Di‐Xin , Lu Zhuo‐Ya , Yan Ming‐Yan , Wan Jing , Li Jin‐Yi , Xu Quan , Xin Sen , Wen Rui , Guo Yu‐Guo 
Published: February 2022

AbstractIn recent years, micrometer‐sized Si‐based anode materials have attracted intensive attention in the pursuit of energy‐storage systems with high energy and low cost. However, the significant volume variation during repeated electrochemical (de)alloying processes will seriously damage the bulk structure of SiOx microparticles, resulting in rapid performance fade. This work proposes to address the challenge by preparing in situ magnesium‐doped SiOx (SiMgyOx) microparticles with stable structural evolution against Li uptake/release. The homogeneous distribution of magnesium silicate in SiMgyOx contributes to building a bonding network inside the particle so that it raises the modulus of lithiated state and restrains the internal cracks due to electrochemical agglomeration of nano‐Si. The prepared micrometer‐sized SiMgyOx anode shows high reversible capacities, stable cycling performance, and low electrode expansion at high areal mass loading. A 21700 cylindrical‐type cell based on the SiMgyOx‐graphite anode and LiNi0.8Co0.15Al0.05O2 cathode demonstrates a 1000‐cycle operation life using industry‐recognized electrochemical test procedures, which meets the practical storage requirements for consumer electronics and electric vehicles. This work provides insights on the reasonable structural design of micrometer‐sized alloying anode materials toward realization of high‐performance Li‐ion batteries.
Shape Memory Alloy‐Based Soft Amphibious Robot Capable of Seal‐Inspired Locomotion
Authors: Hwang Jonghyun , Wang Wei Dawid 
Published: February 2022

AbstractRobots are often required to have multimodal and amphibious capabilities for dynamic environments. Although shape memory alloy (SMA) has been exploited in creating various types of deformation in soft actuators, no SMA‐based multimodal soft amphibious robot has been reported. This study describes a soft amphibious robot made of SMA‐based soft actuators that mimics the terrestrial and subaqueous motion of crawling seals. The soft amphibious robot named SEALicone exhibits two gaits, crawling terrestrial locomotion and oscillatory underwater propulsion. The robot consists of two types of SMA‐based soft actuators: the backbone actuator with wave‐like deformation and the support actuator with fusiform deformation. These actuators in the robot collectively deform allowing the robot to generate distinct locomotion styles that mimic those of the crawling seals. Straight advance and turning motions of the robot in both environments are evaluated, and the transitional motion between the two environments is also demonstrated. This study lays the important groundwork in designing multimodal soft robots that can operate across different environments.
Dehydrogenation of N‐Heterocyclic Compounds Using H2O2 and Mediated by Polar Solvents
Authors: Llopis Natalia , Gisbert Patricia , Baeza Alejandro , Correa‐Campillo Jara 
Published: February 2022

AbstractThe oxidative dehydrogenation of N‐heterocyclic compounds by using H2O2 as oxidant in combination with polar solvents such as 1,1,1,3,3,3‐hexafluoroisopropanol (HFIP) and H2O is described. Among these two solvents, the best yields for the heteroaromatic compounds were generally achieved in HFIP. However, it is remarkable, that the use of a non toxic solvent such as H2O gave such good yields. Furthermore, the procedure was implemented in larger‐scale and HFIP was distilled from the reaction mixture and reused (up to 5 cycles) without a significant detriment in the reaction outcome.magnified image
Immunogenicity of a 5‐dose pneumococcal vaccination schedule following allogeneic hematopoietic stem cell transplantation
Authors: Garcia Garrido Hannah M. , Haggenburg Sabine , Schoordijk Marieke C. E. , Meijer Ellen , Tanck Michael W. T. , Hazenberg Mette D. , Rutten Caroline E. , de Bree Godelieve J. , Nur Erfan , Meek Bob , Grobusch Martin P. , Goorhuis Abraham 
Published: February 2022

AbstractThe optimal schedule of pneumococcal vaccination after allogeneic hematopoietic stem cell transplantation (allo‐HSCT) remains controversial. The objective of this study was to investigate the immunogenicity of a 5‐dose pneumococcal vaccination schedule in adult allo‐HSCT recipients with and without immunosuppressive therapy. In this prospective cohort study, allo‐HSCT recipients received four doses of the 13‐valent pneumococcal conjugate vaccine (PCV13) and one dose of the 23‐valent pneumococcal polysaccharide vaccine (PPSV23) starting 4–6 months after allo‐HSCT. PCV13 was administered at T0, T1, T2, and T8 (T = months from enrollment) and PPSV23 at T10. Serum was collected at T0, T4, T8, T10, and T12, and IgG levels were measured for all 24 vaccine serotypes by immunoassay. The primary outcome was overall seroprotection at T12 defined as an IgG concentration ≥1.3 μg/ml for 17/24 vaccine serotypes in allo‐HCST recipients with and without immunosuppressive therapy at baseline. Secondary outcomes were serotype‐specific seroprotection and dynamics of IgG levels. We included 89 allo‐HSCT recipients in the final analysis. Overall seroprotection was 47% (15/32) for patients without immunosuppressive therapy at baseline versus 24% (11/46) for patients with immunosuppressive therapy (p = .03). Seroprotection was higher for PCV13 serotypes (78% and 54% respectively; p = .03) and lower for PPSV23‐unique serotypes (28% and 13% respectively; p = .1). IgG concentrations increased significantly over time for all 24 serotypes. Concluding, although immunogenicity of PCV13 serotypes was reasonable, the poor response to PPSV23 serotypes resulted in an insufficient overall response to pneumococcal vaccination for allo‐HSCT recipients. Research into vaccination strategies with higher‐valent T‐cell‐dependent pneumococcal vaccines is needed.