bluuebunny/crossref_metadata_2025_split huggingface dataset:
Jammed Microgel‐Based Inks for 3D Printing of Complex Structures Transformable via pH/Temperature Variations
Authors: Moon Dowon , Lee Min‐Gyu , Sun Jeong‐Yun , Song Kwang Hoon , Doh Junsang 
Published: June 2022

AbstractStructure changes mediated by anisotropic volume changes of stimuli‐responsive hydrogels are useful for many research fields, yet relatively simple structured objects are mostly used due to limitation in fabrication methods. To fabricate complex 3 dimensional (3D) structures that undergo structure changes in response to external stimuli, jammed microgel‐based inks containing precursors of stimuli‐responsive hydrogels are developed for extrusion‐based 3D printing. Specifically, the jammed microgel‐based inks are prepared by absorbing precursors of poly(acrylic acid) or poly(N‐isopropylacrylamide) in poly(acrylamide) (PAAm) microgels, and jamming them. The inks exhibit shear‐thinning and self‐healing properties that allow extrusion of the inks through a nozzle and rapid stabilization after printing. Stimuli‐mediated volume changes are observed for the extruded structures when they are post‐crosslinked by UV light to form interpenetrating networks of PAAm microgels and stimuli‐responsive hydrogels. Using this method, a dumbbell‐shaped object that can transform to a biconvex shape, and a gripper that can grasp and lift an object in response to stimuli are 3D‐printed. The jammed microgel‐based 3D printing strategy is a versatile method useful for variety of applications as diverse types of monomers absorbable in the microgels can be used to fabricate complex 3D objects transformable by external stimuli.
Controlled Oxyanionic Polymerization of Propylene Oxide: Unlocking the Molecular‐Weight Limitation by a Soft Nucleophilic Catalysis
Authors: Fornaciari Charlotte , Pasini Dario , Coulembier Olivier 
Published: June 2022

AbstractThe oxyanionic ring‐opening polymerization of propylene oxide (PO) from an exogenous alcohol activated with benign (complexed) metal‐alkali carboxylates is described. The equimolar mixture of potassium acetate (KOAc) and 18‐crown‐6 ether (18C6) is demonstrated to be the complex of choice for preparing poly(propylene oxide) (PPO) in a controlled manner. In the presence of 18C6/KOAc, hydrogen‐bonded alcohols act as soft nucleophiles promoting the PO SN2 process at room temperature and in solvent‐free conditions while drastically limiting the occurrence of parasitic hydrogen abstraction generally observed during the anionic ROP of PO. The resulting PPO displays predictable and unprecedented molar masses (up to 20 kg mol−1) with low dispersities (ĐM < 1.1), rendering the 18C6/KOAc complex the most performing activator for the oxyanionic polymerization of PO reported to date. Preliminary studies on the preparation of block and statistical copolyethers are also reported.
Indium Oxide Doped Polyaniline for Detection of Formaldehyde
Authors: Mavani Bhoomi Het , Penlidis Alexander 
Published: June 2022

AbstractPolyaniline (PANI) and a polyaniline derivative (poly (2,5‐dimethyl aniline)) are evaluated for their sensitivity towards formaldehyde. Among the two polymer backbones evaluated, polyaniline seems more sensitive towards formaldehyde. Therefore, to further enhance sensitivity towards formaldehyde, polyaniline is doped with different weight percentages of indium oxide and further evaluated for its sensing capabilities such as sensitivity, selectivity, and stability. It is found that PANI with 1.25 wt% of In2O3 is most sensitive towards formaldehyde, while PANI with 5 wt% of In2O3 is most selective towards formaldehyde over benzene interferent. It is observed that sensitivity and selectivity trends for PANI doped with different wt% of In2O3 are reverse of each other. All sensing materials are found stable.
Adjustable continence balloons in postprostatectomy incontinence: Outcomes and complications
Authors: Ricard Hélène , Léon Grégoire , Branchereau Julien , Bouchot Olivier , Karam Georges , Le Normand Loic , Rigaud Jérôme , Perrouin‐Verbe Marie‐Aimée 
Published: June 2022

AbstractObjectiveThe objective of this study was to assess the mid‐term efficacy and safety of adjustable continence therapy (ProACT™) for the treatment of male stress urinary incontinence (SUI) after radical prostatectomy (RP).Patients and MethodsSingle‐center retrospective study including male patients implanted with ProACT™ periurethral balloons for SUI after RP between 2007 and 2017, mainly with flexible cystoscopic guidance. Efficacy was assessed using a composite endpoint with subjective (patient's impression of improvement (PII), using a 0–100 numeral rating scale) and objective outcomes (decrease in daily pad use). Postoperative success was defined as a PII ≥ 80%, associated with the use of 0–1 pad daily. Improvement was defined as a PII ≥ 50% and a decrease ≥50% in the number of daily pads used.ResultsTwo hundred men with a median age of 68 (64–73) years were included. Seventeen percent (n = 34) had had prior radiotherapy and 15.5% (n = 31) had had prior SUI surgery. The median follow‐up was 43 (19–71) months. The severity of SUI was as follows: mild in 119 (59.5%), moderate in 48 (24%), and severe in 33 patients (16.5%). Severe SUI and a history of prior radiotherapy were associated with a lower success rate (p = 0.033 and p < 0.0001). The overall reoperation rate was 34%, with 5.6% (n = 11) requiring a third implantation. Of the patients, 29.4% (n = 58) required an artificial urinary sphincter to treat SUI. At the last follow up, among the overall population, the success rate was 40.1% and the median PII was 18.3%. For patients in whom the balloons were still in place (n = 132), the cumulative success and improvement rate was 78%, with a median PII of 72%.ConclusionThe minimally invasive ProACT™ device provides a clear beneficial continence outcome in patients with SUI after radical prostatectomy. Severe SUI or prior radiotherapy were associated with a lower success rate in our study.
Diagnosis and treatment of urethral stricture in men with neurogenic lower urinary tract dysfunction: A systematic review
Authors: González‐Espinosa Carlos , Castro‐Nuñez Patricia , Averbeck Marcio A. , Gomez Reynaldo , Castaño‐Botero Juan C. , Aparicio Alejandro , Moreno‐Palacios Jorge 
Published: June 2022

AbstractAimTo summarize available data focused on diagnosis and management of urethral stricture in men with neurogenic lower urinary tract dysfunction by a systematic review of the literature.Materials and MethodsA systematic review of the literature was carried out through an extensive electronic database search performed in PubMed/MEDLINE and Scopus databases for full texts, and International Continence Society, American Urology Association, and European Association of Urology abstracts for citations related to urethral structure. This review was conducted according to the Preferred Reporting Items for Systematic Reviews and Meta‐Analysis.ResultsA total of 316 articles were identified, 48 of which were selected for this review. Different strategies are currently being used for the management of urethral strictures, such as clean intermittent catheterization (CIC) which reduces stricture by up to 68%; direct vision internal urethrotomy which shows lower rates of renarrowing; urethroplasty which shows a success rate up to 70%; urinary diversion is the treatment of choice when reconstruction is not possible.ConclusionsFurther studies are needed in this population because of the heterogeneity of the outcomes and the lack of a standardized definition and classification of this population.
Beyond survival mode: Organizational resilience capabilities in nonprofit arts and culture fundraising during the Covid‐19 pandemic
Authors: Herrero Marta , Kraemer Simone 
Published: June 2022

AbstractOrganizational resilience remains an under‐explored topic in the nonprofit management literature (Searing et al., 2021). Despite an increasing number of studies framed by management perspectives and organizational theory, their focus is on how forprofit organisations react against external crisis by developing ‘resilience capabilities’; ways of understanding and of working designed to reduce uncertainty and restore balance to the organisation (Lengnick‐Hall, et al., 2011; Williams et al., 2017). This article draws on literature on ‘resilience capabilities’ and on in‐depth interviews with nonprofit fundraisers, carried out during the early stages of the Covid‐19 pandemic, to examine how they compensated for a sudden drop in financial revenue by devising alternative, strategic ways of fundraising. It argues that non‐profit fundraisers deployed cross‐capability building, which combined and merged emotion‐related and behavioural capabilities to achieve strategic, practical results.
Regional pest suppression associated with adoption of Cry1Ac soybean benefits pest management in tropical agriculture
Authors: Horikoshi Renato J , Dourado Patrick M , Bernardi Oderlei , Willse Alan , Godoy Wesley AC , Omoto Celso , Bueno Adeney de F , Martinelli Samuel , Berger Geraldo U , Head Graham P , Corrêa Alberto S 
Published: June 2022

AbstractBACKGROUNDBacillus thuringiensis (Bt) crops have been adopted worldwide, providing high‐level protection from insect pests. Furthermore, Bt crops preserve natural enemies, promote higher yield, and economically benefit farmers. Although regional pest suppression by widespread Bt crop adoption has been observed in temperate regions, this possibility remains uncertain in tropical areas due to the high diversity of alternative hosts and mild winters.RESULTSEvidence of regional reduction in insecticide use across areas was observed in Brazil where Cry1Ac soybean has been grown since 2013, with up to 50% reduction in the number of insecticide sprays for managing lepidopteran pests on non‐Bt soybean observed at specific locations from 2012 to 2019. Pest monitoring data from four mesoregions across 5 years of commercial plantings of Cry1Ac soybean from December 2014 to July 2019 showed reduced numbers of Chrysodeixis includens moths captured in pheromone traps across years at all locations. The number of Helicoverpa spp. moths captured also was reduced at three locations.ConclusionWe provide evidence for regional suppression of lepidopteran pests and reduced insecticide use with the widespread adoption of Cry1Ac soybean in Brazil, bringing economic, social and environmental benefits. © 2022 Society of Chemical Industry.
Assessing human perceptions towards large wood in river ecosystems following flooding experiences
Authors: Dalu Mwazvita T. B. , Cuthbert Ross N. , Ragimana Phumudzo , Gunter Ashley W. , Dondofema Farai , Dalu Tatenda 
Published: June 2022

AbstractLarge wood deposited in rivers provides ecological benefits for multiple trophic groups, but public perceptions of these deposits can be varied. In particular, flooding experiences linked to large wood debris could influence how the public and stakeholders view large wood deposited into the river ecosystem. Here, we assessed the perceptions towards large wood using groups of undergraduates, postgraduates and staff from a local university in Limpopo Province of South Africa. A survey was conducted using questionnaires, which were distributed online to a sample of 104 participants across these groups, using both visual (i.e. paired photographs of different river scenarios) and categorical questions. Large shares of respondents regularly used river systems recreationally (62.9%), with woodless systems perceived as being significantly more aesthetic, less dangerous and least in need of improvement. These perceptions, however, differed among university groups, with staff having stronger perceptions of aesthetics (median = 5.5, mean 5.4 ± 2.8), less dangerousness (median = 3.0, mean 4.2 ± 3.0) and naturalness (median = 6.0, mean 5.8 ± 2.6) towards systems with large wood. Correlation analyses indicated significant interrelatedness among perceptions of aesthetics, naturalness, danger and improvement needs. However, negative perceptions towards large wood in the river were generally not determined by any recent experience of flooding in the area, with large wood‐related dangers rather associated with leisure activities in rivers by students. These results highlight a need for passing on the knowledge of natural river systems with wood to people in Vhembe Biosphere Reserve and communities' scientists and assessing wider perceptions outside of the university context.
Sulfated Titania (TiO2‐SO42−) as an Efficient Catalyst for Organic Synthesis: Overarching Review from 2000 to 2021
Authors: Nivetha Narayanasamy , Thangamani Arumugam , Velmathi Sivan 
Published: June 2022

AbstractSulfated titania (TiO2‐SO42−) is a unique and versatile catalytic material which is non‐toxic, non‐corrosive, non‐pollutant and easily separable in nature. Sulfated titania can engage in various organic reactions, as it contains both Lewis acid and Bronsted acid sites. A wide number of organic reactions in the presence of sulfated titania have been reported, most of which displays excellent conversion and selectivity for the syntheses of desired products with significant applications. This review endeavors to give an overview of the research highlights solicitous with sulfated titania. Even though it is arduous to cover all the research articles in the literature, various milestones in the route towards highly functionalized sulfated titania are explored. It is hoped that this review article will trigger the attention of researchers over sulfated titania for the advancement of new eco‐compatible approaches in organic chemistry.
Chemoselective Synthesis of Acyclic Acetals by Natural Kaolin under Green Chemistry Conditions
Authors: Boukachabia Mourad , Bendjeffal Hacene , Aribi‐Zouioueche Louisa , Riant Olivier , Bouhedja Yacine 
Published: June 2022

AbstractThe highly chemoselective protection of various aldehydes by natural kaolin as a catalyst was reported. This clay was characterised by XRD, FTIR, BET and SEM techniques. The acetalization reaction was executed in ethanol as solvant and produces the corresponding acetals with moderate to excellent yields and high chemoselectivity (0 %<yield<95 %). The reaction could be performed on a gram scale using the kaolin catalyst. The thermodynamic and kinetic studies on the reaction were conducted on the m‐nitrobenzaldehyde. Algerian kaolin using for the first time in organic synthesis is an efficient heterogeneous catalyst, recyclable who can be used at the multi‐gram scale. This is a low cost and very eco‐friendly heterogeneous catalyst.
β‐Cyclodextrin‐Based Nanocomposite Derivatives: State of the Art in Synthesis, Characterization and Application in Molecular Recognition
Authors: Tarannum Nazia , Kumar Deepak , Kumar Nitin 
Published: June 2022

AbstractThis review describes the synthesis of nanocomposite derivatives based on β‐cyclodextrin (β‐CD) using silver nanoparticles (NPs), gold NPs, magnetic NPs, carbon nanotubes, nanosheets, carbon dots and graphene oxide NPs. These nanocomposites were prepared by green synthesis method, chemical method, reduction method, thermal reduction, ultrasonication method and hydrothermal method. β‐CD is cyclic oligosaccharide consisting of seven glucose units linked by 1,4‐α‐glycosidic bonds. Its external surface is hydrophilic due to the substantial hydroxyl groups, and the interior is hydrophobic. β‐CD are useful in nanocomposites and metallic NPs because they provide nanoplatforms for biocompatibility. β‐CD is commonly used to change NPs because of their excellent biocompatibility, amphipathic properties and for enhancing the morphological and chemical features of nanocomposites. Thus, nanostructured materials based on β‐CD may enhance the potential for molecular recognition property which is a natural phenomenon and fundamentally important in chemistry and biology. The most important area in molecular recognition research is design and synthesis of model receptors (hosts) to recognize substrates (guests) of biochemical significance to mimic biological events. Because NPs have a high surface‐to‐volume ratio when combined with molecularly imprinted polymers (MIPs). This review briefs the application and characterizations of β‐CD based nanocomposites derivatives in molecular recognition.
Nano‐Drug Carriers: A Potential Approach towards Drug Delivery Methods
Authors: Sattar Rabia , Shahzad Faisal , Ishaq Tehmeena , Mukhtar Rubina , Naz Asima 
Published: June 2022

AbstractDrugs are directly connected to the approaches by which they are administered and their delivery affects cellular uptake, biodistribution, toxicity, and excretion. Drug delivery methods are also necessary to be modified with the development of new therapeutic agents. This review summarizes the information about advancements in the field of drug delivery and mechanisms of drug action followed by factors affecting biocompatibility. Graphene, graphene oxide, mesoporous silica nanoparticles (MSNs), iron oxide nanoparticles, polyethylene glycol ligands and gold nanoparticles are prominent advancements in the field of drug delivery. These nanocarriers are engulfed by the cells through endocytosis followed by intracellular trafficking to reach the cytoplasm and their biocompatibility can be affected by various physicochemical parameters like surface charge, size, and shape. This review article may prove essential for the modification of drug delivery methods with the development of new therapeutic agents to eliminate the hurdles in near future.
Synthesis of Unusual Amino Acid Derivatives Containing Bicyclo[2.2.2]octane Unit by the Diels‐Alder Approach Involving Pentacene
Authors: Kotha Sambasivarao , Gaikwad Vidyasagar 
Published: June 2022

AbstractHere, we report various unusual amino acid derivatives containing bicyclo[2.2.2]octane unit through the Diels‐Alder (DA) reaction as a key step. DA reaction was carried out with pentacene as a diene and different dinenophiles used here are derived by dehydration of serine derivatives.
Laserstrahl‐ und Laserhybridschweißverbindungen aus ultrahochfesten Feinkornbaustählen – Teil 2: Ermüdungsfestigkeit
Authors: Seyfried Benjamin , Möller Benjamin , Ummenhofer Thomas , Baumgartner Jörg , Melz Tobias 
Published: June 2022

AbstractInnovative Schweißverfahren, wie das Laserstrahl‐ und Laserstrahl‐MSG‐Hybridschweißen, bieten u. a. aufgrund der reduzierten Wärmeeinbringung beim thermischen Fügen von höchst‐ und ultrahochfesten Feinkornbaustählen Vorteile gegenüber konventionellen MSG‐Verfahren. Die Werkstoffe mit nominellen Streckgrenzen bis zu 1300 MPa werden im Mobilkranbau und verwandten Industriezweigen, insbesondere im Teleskopausleger, bereits eingesetzt. Bisher werden jedoch sowohl konventionell geschweißte als auch laserstrahlgeschweißte Verbindungen in hochbeanspruchten Bereichen der Tragstrukturen gemieden. Letztere insbesondere aufgrund fehlender Erfahrunsgwerte und Bemessungsregeln. Um dem zu entgegnen, wurden in Teil 1 die Grundlagen der Fügeverfahren, Schweißversuche sowie eine Charakterisierung von Stumpfnahtschweißungen vorgestellt. Der vorliegende Beitrag (Teil 2) baut darauf auf und setzt den Fokus auf die Ermüdungsfestigkeit dieser Verbindungen aus den Grundwerkstoffen S960MC, S1100M, S1100QL und S1300QL. Die Eigenschaften unter zyklischer Beanspruchung werden anhand der Kerbdetails Stumpfstoß mit und ohne Blechdickensprung sowie aufgeschweißte Längssteife quantifiziert. Insbesondere die laserstrahlgeschweißten Verbindungen zeigen eine hohe Ermüdungsfestigkeit bei bemerkenswert geringer Streuung der Einzelversuchsergebnisse. Auf Grundlage der Schwingfestigkeitsuntersuchungen werden für das Nennspannungskonzept abgeleitete Kerbfalleinstufungen als Bemessungsempfehlungen vorgestellt.
Efficiency of the slime mold algorithm for damage detection of large‐scale structures
Authors: Ghannadi Parsa , Kourehli Seyed Sina 
Published: June 2022

SummaryOptimization‐based methods are increasingly being implemented for structural damage detection problems through the minimization of the objective functions based on vibration data. The adopted optimization algorithm and objective function play an important role in the accurate detection and quantification of damages. Meanwhile, the challenge of long computational time is another aspect of structural damage identification problems, especially upon addressing large‐scale structures. In this paper, recently developed optimization techniques called slime mold algorithm (SMA) and marine predators algorithm (MPA) are applied to damage assessment of large‐scale structures for the first time. The performance of these algorithms is compared with those obtained using other well‐known optimization techniques such as ant lion optimizer (ALO), whale optimization algorithm (WOA), and grasshopper optimization algorithm (GOA). Furthermore, the sensitivity of three objective functions based on modal assurance criterion (MAC), modified total modal assurance criterion (MTMAC), and natural frequency vector assurance criterion (NFVAC) are examined. Two numerical studies, including the 53‐bar planar truss and the Guangzhou New TV tower, and a full‐scale three‐story frame as an experimental investigation are conducted to present a statistical comparison. The overall results show that the combination of SMA and objective function based on MTMAC provides an accurate tool for damage identification. However, improved SMA (ISMA) has been introduced to enhance the capability of standard SMA for damage detection, and especially finite element model updating in the experimental example. Five benchmark functions are also used to evaluate the global optimization capacity of ISMA and SMA. The results show that the ISMA has many benefits in terms of tackling global optimization problems. MPA‐MTMAC can provide promising results compared with ALO‐MTMAC, WOA‐MTMAC, and GOA‐MTMAC. However, excessive computation time is a big drawback for MPA. The overall results confirm the perfection of the objective function based on MTMAC compared with two others based on MAC and NFVAC.
Phylogeny and historical biogeography of the Panama‐hat family (Cyclanthaceae, Pandanales)
Authors: Leal Eduardo S. , Vasconcelos Thais N.C. , Tuberquia Dino , Soto Gomez Marybel , Michelangeli Fabián A. , Forzza Rafaela Campostrini , de Mello‐Silva Renato 
Published: June 2022

AbstractThe monocot family Cyclanthaceae (Pandanales) comprises ca. 230 known species in 12 genera restricted to the Neotropics. The family has not been the subject of a species‐level molecular phylogenetic study to date, with multiple evolutionary and biogeographic questions about Cyclanthaceae still unanswered. In this study, we address genus‐ and species‐level relationships and the historical biogeography of Cyclanthaceae based on a broadly sampled molecular phylogeny. Two low‐copy nuclear genes (phyC, rpb2) and five plastid regions (atpB‐rbcL, psbA‐trnH, trnL‐trnF, trnQ‐rps16, matK) representing 99 species and all genera of Cyclanthaceae were sampled, spanning the taxonomic and biogeographic diversity of the family. Our results strongly support the monophyly of all Cyclanthaceae genera and confirm previously proposed hypotheses of intergeneric relationships. Infrageneric relationships are generally well supported, with some exceptions in the genus Asplundia that may require a broader sampling to clarify. The early diversification of Cyclanthaceae is estimated to date back to the Paleocene‐Eocene period in South America, where the family possibly arrived through a boreotropical route. The origin of most genera is inferred from the Paleocene of the Tumbes‐Chocó‐Magdalena region, possibly indicating an earlier origin for this biodiversity hotspot. The current distribution of Cyclanthaceae is likely to have been strongly influenced by major biogeographical events in the Neotropics, such as the uplift of the Andes and the opening of the South America dry diagonal. Further studies that include a broader sample of the large Asplundia‐Dicranopygium clade and Sphaeradenia group are required.