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Effect of Phenolation, Lignin-Type and Degree of Substitution on the Properties of Lignin-Modified Phenol-Formaldehyde Impregnation Resins: Molecular Weight Distribution, Wetting Behavior, Rheological Properties and Thermal Curing Profiles

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Journal of Renewable Materials 2020年第6期8卷 603-630页

作者： Marion Thébault Larysa Kutuzova Sandra Jury Iris Eicher edith-martha zikulnig-rusch Andreas Kandelbauer Kompetenzzentrum Holz(Wood K Plus) LinzA-4040Austria Reutlingen University Lehr-und Forschungszentrum Process Analysis&TechnologySchool of Applied ChemistryReutlingenD-72762Germany

Here,the effects of substituting portions of fossil-based phenol in phenol formaldehyde resin by renewable lignin from two different sources are investigated using a factorial screening experimental *** the resins consumed by the wood-based industry,phenolics are one of the most important types used for impregnation,coating or gluing *** are prepared by condensing phenol with formaldehyde(PF).One major use of PF is as matrix polymer for decorative laminates in exterior cladding and wet-room *** requirements for such PFs are favorable flow properties(low viscosity),rapid curing behavior(high reactivity)and sufficient self-adhesion capacity(high residual curing potential).Partially substituting phenol in PF with bio-based phenolic co-reagents like lignin modifies the physicochemical properties of the resulting *** this study,phenol-formaldehyde formulations were synthesized where either 30%or 50%(in weight)of the phenol monomer were substituted by either sodium lignosulfonate or Kraft *** effect of modifying the lignin material by phenolation before incorporation into the resin synthesis was also *** resins so obtained were characterized by Fourier Transform Infra-Red(FTIR)spectroscopy,Size Exclusion Chromatography(SEC),Differential Scanning Calorimetry(DSC),rheology,and measurements of contact angle and surface tension using the Wilhelmy plate method and drop shape analysis.

关键词： Lignin lignin-phenol-formaldehyde resin(PF) surface energy viscosity thermal characterization design of experiments

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Impregnated Paper-Based Decorative Laminates Prepared from Lignin-Substituted Phenolic Resins

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Journal of Renewable Materials 2020年第10期8卷 1181-1198页

作者： Marion Thébault Ya Li Christopher Beuc Stephan Frömel-Frybort edith-martha zikulnig-rusch Larysa Kutuzova Andreas Kandelbauer Kompetenzzentrum Holz(Wood K Plus) Altenberger Straße 69A-4040LinzAustria University of Life Sciences and Natural Resources(BOKU) Universitäts-und Forschungszentrum Tulln(UFT)TullnA-3430Austria Reutlingen University Lehr-und Forschungszentrum Process Analysis&Technology(PA&T)School of Applied ChemistryReutlingenD-72762Germany

High Pressure Laminates(HPL)panels consist of stacks of self-gluing paper sheets soaked with phenol-formaldehyde(PF)*** important requirement for such PFs is that they must rapidly penetrate and saturate the paper *** substituting phenol with bio-based phenolic chemicals like lignin changes the physico-chemical properties of the resin and affects its ability to penetrate the *** this study,PF formulations containing different proportions of lignosulfonate and kraft lignin were used to prepare paper-based *** penetration of a Kraft paper sheet was characterized by a recently introduced,new device measuring the conductivity between both sides of the paper sheet after a drop of resin was placed on the surface and allowed to penetrate the *** main target value measured was the time required for a specific resin to completely penetrate the defined paper sample(“penetration time”).This penetration time generally depends on the molecular weight distribution,the flow behavior and the polarity of the resin which in turn are dependent on the manufacturing conditions of the *** the present study,the influences of the three process factors:(1)type of lignin material used for substitution,(2)lignin modification by phenolation and(3)degree of phenol substitution on the penetration times of various lignin-phenolic hybrid impregnation resins were studied using a complete twolevel three-factorial experimental *** laminates made with the resins diluted in methanol were mechanically tested in terms of tensile and flexural strains,and their cross-sections were studied by light microscopy.

关键词： Lignin phenol-formaldehyde resin(PF) decorative laminate impregnated paper

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Colorectal cancer screening: Modalities and adherence

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World Journal of Gastroenterology 2024年第24期30卷 3048-3051页

作者： Georgios Metaxas Athena Papachristou martha Stathaki Department of Surgery Elena Venizelou HospitalAthens 11521Greece

In the last decade,several studies have explored various modalities and strategies for colorectal cancer(CRC)screening,taking into account epidemiological data,individual characteristics,and socioeconomic *** this editorial,we comment further on a retrospective study by Agatsuma et al published in the recent issue of the World Journal of *** focus is on screening trends,particularly in relation to efforts to improve the currently suboptimal uptake among the general population worldwide,aiming to enhance early diagnosis rates of *** is a need to raise awareness through health edu-cation programs and to consider the use of readily available,non-invasive screening *** strategies are crucial for attracting screen-eligible populations to participate in first-line screening,especially those in high-or average-risk groups and in regions with limited *** biopsies and biomarkers represent rapidly evolving trends in screening and diagnosis;however,their clinical relevance has yet to be standardized.

关键词： Colorectal cancer Screening test High-risk group Strategies Biomarker Liquid biopsy Screening adherence

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Mechanical Behavior of Panels Reinforced with Orthogonal Plant Fabrics: Experimental and Numerical Assessment

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Journal of Renewable Materials 2024年第10期12卷 1791-1810页

作者： martha L.Sánchez G.Capote Universidad Militar Nueva Granada Programa de Ingeniería CivilBogotá110111Colombia Facultad de Ciencias Departamento de FísicaUniversidad Nacional de ColombiaBogotá111321Colombia

The construction sector is one of the main sources of pollution,due to high energy consumption and the toxic substances generated during the processing and use of traditional *** production of cement,steel,and other conventional materials impacts both ecosystems and human health,increasing the demand for ecological and biodegradable *** this paper,we analyze the properties of panels made from a combination of plant fibers and castor oil resin,analyzing the viability of their use as construction *** the research,orthogonal fabrics made with waste plant fibers supplied by a company that deals with the manufacture of furniture and craft products were *** fabrics were made with strips of plant fibers of the Calamus rotang,Bambusa vulgaris,Heteropsis flexuosa,and Salix viminalis *** improve their compatibility with the castor oil resin,a cold argon plasma treatment was *** effect of the treatment on the properties of the fibers and the panels was *** density,water absorption capacity,and swelling percentage were ***,compression,static bending,and linear buckling tests were carried *** study found that panels made with treated fiber fabrics exhibited a reduction of approximately 10%in absorption capacity and up to 35%in swelling percentage *** made with Bambusa vulgaris fabrics exhibited the highest strength and stiffness *** models were constructed using commercial finite element *** comparing the numerical results with the experimental ones,differences of less than 15%were seen,demonstrating that the models allow adequately predicting the analyzed *** comparing the values obtained with the characteristic values of oriented strand board,the results suggest that panels made with unconventional materials could replace commercial panels traditionally made with wood-based fibers and particles and other composite materials in several applications in th

关键词： Unconventional materials nonstructural panels plantﬁbers surface treatment physical properties mechanical properties

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An improved pulse coupled neural networks model for semantic IoT

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Digital Communications and Networks 2024年第3期10卷 557-567页

作者： Rong Ma Zhen Zhang Yide Ma Xiping Hu edith C.H.Ngai Victor C.M.Leung School of Information Science and Engineering Lanzhou UniversityLanzhou 730000China School of Medical Technology Beijing Institute of TechnologyBeijing100081China Department of Electrical and Electronic Engineer The University of Hong KongHong Kong 999077China College of Computer Science and Software Engineering Shenzhen UniversityShenzhen 518060China Department of Electrical and Computer Engineering the University of British ColumbiaVancouverBC V6T 1Z4Canada

In recent years,the Internet of Things(IoT)has gradually developed applications such as collecting sensory data and building intelligent services,which has led to an explosion in mobile data ***,with the rapid development of artificial intelligence,semantic communication has attracted great attention as a new communication ***,for IoT devices,however,processing image information efficiently in real time is an essential task for the rapid transmission of semantic *** the increase of model parameters in deep learning methods,the model inference time in sensor devices continues to *** contrast,the Pulse Coupled Neural Network(PCNN)has fewer parameters,making it more suitable for processing real-time scene tasks such as image segmentation,which lays the foundation for real-time,effective,and accurate image ***,the parameters of PCNN are determined by trial and error,which limits its *** overcome this limitation,an Improved Pulse Coupled Neural Networks(IPCNN)model is proposed in this *** IPCNN constructs the connection between the static properties of the input image and the dynamic properties of the neurons,and all its parameters are set adaptively,which avoids the inconvenience of manual setting in traditional methods and improves the adaptability of parameters to different types of *** segmentation results demonstrate the validity and efficiency of the proposed self-adaptive parameter setting method of IPCNN on the gray images and natural images from the Matlab and Berkeley Segmentation *** IPCNN method achieves a better segmentation result without training,providing a new solution for the real-time transmission of image semantic information.

关键词： Internet of things(IoT) Semantic information Real-time application Improved pulse coupled neural network Image segmentation

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Treatment of intermediate-risk prostate cancer with active surveillance in the routine care—Long-term outcomes of a prospective noninterventional study(HAROW)

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Current Urology 2024年第2期18卷 115-121页

作者： Lothar Weissbach Andreas Schwarte edith A.Boedefeld Jan Herden Health Research for Men GmbH BerlinGermany Urological practice Borken BorkenGermany Department of Urology Uro-OncologyRobot-Assisted and Reconstructive UrologyFaculty of Medicine and University Hospital CologneUniversity of CologneCologneGermany PAN Clinic Urological practiceCologneGermany

Background:We report here the long-term outcomes of patients with intermediate-risk prostate cancer(PCa)treated with active surveillance(AS)in a daily routine *** andmethods:HAROW(2008–2013)was a noninterventional,health service research study investigating themanagement of localized PCa in a community setting.A substantial proportion of the study centers were office-based urologists.A follow-up examination of all intermediate-risk patients with AS was ***,cancer-specific,metastasis-free,and treatment-free survival rates,as well as reasons for discontinuation,were determined and ***:Of the 2957 patients enrolled,52 with intermediate-risk PCa were managed with AS and were available for *** median follow-up was 6.8 years(interquartile range,3.4–8.6 years).Seven patients(13.5%)died of causes unrelated to PCa,of whom 4 were under AS or under watchful *** patients(3.8%)developed *** estimated 8-year overall,cancer-specific,metastasis-free,and treatment-free survival rates were 85%(95%confidence interval[CI],72%–96%),100%,93%(95%CI,82%–100%),and 31%(95%CI,17%–45%),*** analysis,prostate-specific antigen density of≥0.2 ng/mL2 was significantly predictive of receiving invasive treatment(hazard ratio,3.29;p=0.006).Reasons for discontinuation were more often due to patient's or physician's concerns(36%)than due to observed clinical ***:Although survival outcome data for intermediate-risk patients managed with AS in real-life health care conditions were promising,rates of discontinuation were high,and discontinuation was often a patient's decision,even when the signs of disease progression were *** might be an indication of higher levels of mental burden and anxiety in this specific subgroup of patients,which should be considered when making treatment *** a psychological perspective,not all intermediate-risk patients are optimal candidates for A

关键词： Active surveillance Intermediate-risk prostate cancer HAROW study Conservative management Outcomes research

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Health awareness and lifestyle toward healthcare-seeking behavior among students in Universitas Advent Indonesia

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Frontiers of Nursing 2024年第3期11卷 337-342页

作者： Alvin Salim Natasha Ulima Sianturi Evi martha Suryani Yunus Elon Nursing Department Riau Andalan Pulp&PaperRiauIndonesia Faculty of Nursing Binawan UniversityJakartaIndonesia Nursing Department UNAI ClinicBandungIndonesia Faculty of Nursing Universitas Advent IndonesiaBandungIndonesia

Objective:Healthcare-seeking behavior(HSB)would affect the prevalence of morbidity and *** are various factors that affect one's *** study aimed to determine if health awareness and lifestyle might relate to ***:A cross-sectional study was applied by using three questionnaires to determine par ticipants'health awareness,lifestyle,and *** study took place in Universitas Advent Indonesia and the students were recruited to be par ***:There were 39 par ticipants joined in this *** of the par ticipants were females,third-year students,and from Accounting *** all participants were aware of their low risk of health issues,had a fine lifestyle,and had moderate ***:One's urge to seek health care facilities was not related to their health awareness and *** was no fur ther study to contradict with this finding at this moment.

关键词： health awareness healthcare-seeking behavior healthcare service utilization lifestyle public health

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Porphyrins,phthalocyanines,and related covalent-organic frameworks in the photochemical and electrochemical water splitting:A review

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Particuology 2024年第7期90卷 236-265页

作者： Oxana V.Kharissova Yolanda Peña Méndez Boris I.Kharisov Aleksandr LNikolaev edith Luévano-Hipólito Lucy T.González Universidad Autónoma de Nuevo León Ave.Universidad s/nSan Nicolás de los GarzaNuevo León66455Mexico Department of Chemistry Moscow State UniversityVorobievy HillsMoscowRussia CONACYT-Universidad Autónoma de Nuevo León Facultad de Ingeniería Civil-Departamento de Ecomateriales y EnergíaCd.UniversitariaC.P.66455San Nicolás de los GarzaNLMexico Tecnologico de Monterrey Escuela de Ingeniería y CienciasMonterreyNuevo León 64890Mexico Tecnologico de Monterrey Centro del AguaMonterreyNuevo León 64890Mexico

In this review,the possibilities of photochemical and electrochemical water splitting(WS)using porphyrins,phthalocyanines,related macrocycles,and their metal complexes are *** efforts are being carried out in order to develop novel and cheap methods for water decomposition to generate inexhaustible greener energy sources(molecular hydrogen)instead of oil and *** processes of WS in heterogeneous and homogeneous media require novel photo-and electrocatalysts,in particular those on macrocycle basis.A high WS efficiency has been observed for porphyrins and phthalocyanines,showing their suitability both for HER and OER processes are available using these relative compounds for WS *** can be used in photocatalytic and electrocatalytic WS processes both in their free forms or as metal porphyrins/porphyrinates,mainly loaded on various inorganic materials,such as Au NPs,C_(3)N_(4),GaP,KTaO_(3),GaP,and so on,as part of porphyrin-containing polymers or on electrode surface as modifying coatings,being sometimes better than commercial catalysts,such as Pt/*** H2 evolution can be considerably depended on the shape of porphyrin particles;in particular,porphyrin nanowires can yield up to 20 times more H2 than its *** certain cases,both HER and OER can be driven in the same electrolyte using metal *** capacity of metal porphyrins to generate ROS(in particular,singlet oxygen 1O_(2))under ultrasonic treatment is known and can be successfully used for H_(2)O_(2) and O_(2) *** can be used in similar processes in free form or as composites with inorganic or organic counterparts,being immobilized on nanocarbons,metal oxides and salts,or simply dissolved in water acting in a homogeneous *** additional use of ultrasound can lead to better results due to the synergistic effect of the sonochemical treatment and ***-organic frameworks are also applied for WS purposes and are mainly based

关键词： Porphyrins Phthalocyanines COFs Water splitting Photocatalysis Electrocatalysis

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How engaging communities in a World Café can inspire integrative nursing research

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Journal of Integrative Nursing 2024年第2期6卷 73-75页

作者： martha Mathews LIBSTER Golden Apple Healing Arts WauwatosaWIUSA

In 2001,I published Demonstrating Care,[1]my first book on integrative *** that time,researchers in higher education as well as health-care institutions were questioning how to advance the practices surrounding the conduct of quantitative studies,randomized clinical trials(RCTs)in particular,in relation to complementarity therapies and healing traditions.

关键词： healing nursing clinical

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Integrative nursing as a rudder for salutogenic system change

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Journal of Integrative Nursing 2024年第1期6卷 1-2页

作者： martha Mathews LIBSTER Founder and Executive Director Golden Apple Healing ArtsWauwatosaWIUSA

Welcome to year 6 and volume six of the Journal of Integrative *** is an honor to join Professor Tang as Editor-in-Chief in cultivating an international community of scholars whose foci includes the topics listed in o... 详细信息

关键词： listed honor Integrative

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