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Scalable Jet-Based Fabrication of PEI-Hydrogel Particles for CO_(2)Capture

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Energy & Environmental Materials 2024年第6期7卷 351-358页

作者： Jieke Jiang Eline van Daatselaar Hylke Wijnja Tessa de Koning Gans Michel Schellevis Cornelis H.Venner derk W.F.Brilman Claas Willem Visser Engineering Fluid Dynamics Group Department of Thermal and Fluid EngineeringFaculty of Engineering TechnologyUniversity of Twente7500AEEnschedeThe Netherlands Sustainable Process Technology Faculty of Science and TechnologyUniversity of Twente7500AEEnschedeThe Netherlands

The capture,regeneration,and conversion of CO_(2)from ambient air and flue gas streams are critical aspects of mitigating global *** sorbents for CO_(2)absorption are very promising as they have high mass transfer areas without energy input and reduce emissions and minimize corrosion as compared to liquid ***,precisely tunable solid CO_(2)sorbents are difficult to ***,we demonstrate the high-throughput production of hydrogel-based CO_(2)-absorbing particles via liquid *** wrapping a liquid jet consisting of an aqueous solution of cross-linkable branched polyethylenimine(PEI)with a layer of suspension containing hydrophobic silica nanoparticles,monodisperse droplets with a silica nanoparticle coating layer was formed in the air.A stable Pickering emulsion containing PEI droplets was obtained after these ejected droplets were collected in a heated oil *** droplets turn into mm-sized particles after thermal curing in the *** diameter,PEI content,and silica content of the particles were systematically varied,and their CO_(2)absorption was measured as a function of *** regeneration of the particles enabled cyclic testing,revealing a CO_(2)absorption capacity of 6.5±0.5 mol kg^(−1)solid PEI in pure CO_(2)environments and 0.7±0.3 mol kg^(−1)solid PEI for direct air *** thousands of particles were produced per second at a rate of around 0.5 kg per hour,with a single *** process can be further scaled by *** complete toolbox for the design,fabrication,testing,and regeneration of functional hydrogel particles provides a powerful route toward novel solid sorbents for regenerative CO_(2)capture.

关键词： CO_(2)capture droplet hydrogel liquid jet particle steam regeneration

Microalgae wet extraction using N-ethyl butylamine for fatty acid production

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Green Energy & Environment 2016年第1期1卷 79-83页

作者： Ying Du Boelo Schuur Sascha R.A.Kersten derk W.F.Brilman University of Twente Sustainable Process Technology Group(SPT)Faculty of Science and Technology

Microalgae are considered a promising feedstock for the production of food ingredients, cosmetics, pharmaceutical products and *** energy intensity of drying and cell breaking of algae and solvent recovery afterwards hindered the route of algae biorefinery. In this work the influences of freeze drying and cell breaking to the extraction efficiency of crude lipid yield and fatty acid yield were investigated. Results showed that drying and cell breaking are not necessary for N-ethyl butylamine extraction, because good yields were obtained without. Crude lipid yield and fatty acid yield using N-ethyl butylamine were comparable with Bligh & Dyer extraction, making N-ethyl butylamine a candidate for further development of an energy efficient lipid extraction technology for non-broken microalgae.

关键词： Microalgae Lipids Extraction Switchable solvent Secondary amine

Anti-RNA Polymerase III Antibodies in Systemic Sclerosis

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Open Journal of Rheumatology and Autoimmune Diseases 2015年第3期5卷 81-86页

作者： Andrew Kelly Chris T. derk Department of Medicine Pennsylvania Hospital Philadelphia PA USA Division of Rheumatology University of Pennsylvania Philadelphia PA USA

Anti-RNA Polymerase III has been recognized as an important autoantibody in Systemic Sclerosis and it is now included in the 2013 ACR/EULAR classification criteria for Systemic Sclerosis. With this manuscript we attem... 详细信息

关键词： Autoantibodies Systemic Sclerosis Scleroderma Anti-RNA Polymerase III Cancer

Adult dental epithelial stem cell-derived organoids deposit hydroxylapatite biomineral

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International Journal of Oral Science 2023年第4期15卷 676-690页

作者： Hyun-Yi Kim Victoria Cooley Eun-Jung Kim Shujin Li Jong-Min Lee Dina Sheyfer Wenjun Liu Ophir D.Klein derk Joester Han-Sung Jung NGeneS Inc. Ansan-siGyeonggi-doKorea Department of Materials Science and Engineering Northwestern UniversityEvanstonILUSA X-ray Science Division Advanced Photon SourceArgonne National LaboratoryLemontILUSA Division in Anatomy and Developmental Biology Department of Oral BiologyOral Science Research CenterBK21 FOUR ProjectYonsei University College of DentistrySeoulKorea Department of Orofacial Sciences and Program in Craniofacial Biology University of CaliforniaSan FranciscoCAUSA Department of Pediatrics Cedars-Sinai Guerin Children’sLos AngelesCAUSA

Ameloblasts are specialized cells derived from the dental epithelium that produce enamel,a hierarchically structured tissue comprised of highly elongated hydroxylapatite(OHAp)*** unique function of the epithelial cells synthesizing crystallites and assembling them in a mechanically robust structure is not fully elucidated yet,partly due to limitations with in vitro experimental ***,we demonstrate the ability to generate mineralizing dental epithelial organoids(DEOs)from adult dental epithelial stem cells(aDESCs)isolated from mouse incisor *** expressed ameloblast markers,could be maintained for more than five months(11 passages)in vitro in media containing modulators of Wnt,Egf,Bmp,Fgf and Notch signaling pathways,and were amenable to *** transplanted underneath murine kidney capsules,organoids produced OHAp crystallites similar in composition,size,and shape to mineralized dental tissues,including some enamel-like elongated *** are thus a powerful in vitro model to study mineralization process by dental epithelium,which can pave the way to understanding amelogenesis and developing regenerative therapy of enamel.

关键词： epithelium maintained specialized

Lower Extremity Ulcers in Patients with Systemic Sclerosis

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Open Journal of Rheumatology and Autoimmune Diseases 2022年第1期12卷 35-45页

作者： Marta B. Bean Chris T. derk Department of Medicine University of Pennsylvania Philadelphia USA Division of Rheumatology Clinical Medicine University of Pennsylvania Philadelphia USA

Introduction: Cutaneous manifestations of systemic sclerosis (SSc) include skin ulceration;4% - 12% of patients with SSc develop lower extremity ulcers of various etiologies. Limited data, significant morbidity, and substantial cost of wound care led us to undertake this study to describe and identify risk factors. Methods: After Institutional Review Board approval, we identified 30 patients with SSc and lower extremity ulcers over a 10-year period at a single center with an SSc clinic, which were included in a descriptive analysis. Results: Median age of onset of lower extremity ulcers was 59.5 years (range 20 - 84). Ninety percent of patients were female, 60% were Caucasian, 63% had limited SSc, 13% diffuse SSc and 23% an overlap syndrome. Immunomodulators or steroids were prescribed in 53%;hypercoagulable state identified in 16%. Ulcers were attributed to venous stasis (27%), SSc (20%), trauma (20%), arterial disease (17%), and multifactorial/unknown (17%). In patients with ulcers attributed to SSc, age at onset was lower (45.5 vs 59.5 years). Biopsies generally did not contribute to management. Multidisciplinary treatment was routine;20% required amputation, 10% endovascular intervention, 20% frequent surgical debridement, 10% hyperbaric oxygen, 26% local treatment and antibiotics and 13% received immunosuppression for wound treatment. Conclusion: Lower extremity ulcers are a serious clinical problem in patients with SSc. The clinical exam, venous dopplers, ankle-brachial indices and assessment of vascular risk factors helped define causality. In younger patients, ulcers were more frequently attributed to SSc and these patients were more likely to be on immunosuppressants/DMARDS, possibly indicating severe phenotype of SSc.

关键词： Lower Extremity Ulcers Systemic Sclerosis Scleroderma Peripheral Vascular Disease Venous Stasis

Predictors of a Cerebrovascular Accident in a Population of Systemic Sclerosis Patients Followed at a Large Academic Center with a Dedicated Scleroderma Center

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Open Journal of Rheumatology and Autoimmune Diseases 2020年第2期10卷 45-56页

作者： Christopher J. Inserra Chris T. derk Department of Medicine Creighton University Omaha NE USA Division of Rheumatology University of Pennsylvania Philadelphia PA USA

Aim: The aim of this study is to describe the clinical characteristics of patients with a diagnosis of systemic sclerosis who later suffer a stroke and to identify associations for this relationship. Background: Prior studies have showed an increased risk of cardiovascular disease among patients with chronic inflammatory disorders, with chronic inflammation leading to atherosclerosis believed to be the culprit. Systemic sclerosis (SSc) is a chronic inflammatory disease characterized by diffuse fibrosis of the skin and internal organs. Previous studies have suggested a possible link between systemic sclerosis and macrovascular complications such as stroke. Methods: This is a retrospective chart review of patients treated within the University of Pennsylvania Health System from October 2015 to April 2019 with a diagnosis of SSc. Using ICD10 codes, we identified a cohort of SSc patients who suffered a stroke. Information regarding demographics and stroke risk factors were gathered from the charts of patients with a diagnosis of both SSc plus stroke and compared to a control group of randomly selected patients with SSc who never suffered a stroke. Continuous variables were conveyed using a mean plus a standard deviation. A two-sample t-test was used to compare the two groups of patients. Qualitative variables were compared using a two-tailed Fisher’s exact test. Results: Based on a large cohort of SSc patients (n = 2080) followed between October 2015 and April 2019, we identified 36 SSc patients who developed a subsequent stroke (1.7% of cohort). When looking at risk factors for stroke in SSc patients, we identified hypertension and atrial fibrillation to be associated with the diagnosis of stroke in such patients. Specifically, 28 of the 36 patients with both SSc and stroke also had a diagnosis of hypertension while in the control group, only 17 of 36 patients had hypertension. Atrial fibrillation was seen in 9 of 36 patients with both SSc and CVA while it was seen in

关键词： Systemic Sclerosis Scleroderma Stroke Cerebrovascular Accident Atrial Fibrillation Hypertension

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中国文化形成中的主导观念

理论导刊 2008年第7期 124-126页

作者： derk bodde[美] 强建周(译) 张立国(译) 不详陕西师范大学教育科学学院博士研究生、西安电子科技大学西安710071 陕西师范大学教育科学学院博士研究生西安710061

中国人很少关注超自然的世界,中华文明的精神基础是伦理观而不是宗教思想;人只是整个自然世界的一部分,天地万物处于一个和谐统一的世界之中;中国人直面人际关系这一本质问题,在文化形成中产生了大量有关伦理和政治的哲学思想,成为中国... 详细信息

中国人很少关注超自然的世界,中华文明的精神基础是伦理观而不是宗教思想;人只是整个自然世界的一部分,天地万物处于一个和谐统一的世界之中;中国人直面人际关系这一本质问题,在文化形成中产生了大量有关伦理和政治的哲学思想,成为中国社会伦理道德的基础;在中国人的观念里,超自然的世界、自然的世界和人的世界之间没有真正的区别,它们都限定在一个无所不包、和谐有序的统一体中。中国人关于统一、和谐的世界观以及克制自身、宽容平和、追求中庸之道的处世态度,对于二战后世界新秩序的重建显得弥足珍贵,值得西方人记取。

关键词：中国文化主导观念形成

Meeting report:a hard look at the state of enamel research

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International Journal of Oral Science 2017年第4期9卷 193-199页

作者： ophir d klein olivier duverger wendy shaw rodrigo s lacruz derk joester janet moradian-oldak megan k pugach j timothy wright sarah e millar ashok b kulkarni john d bartlett thomas gh diekwisch pamela den besten james p simmer program in craniofacial biology and department of orofacial sciences university of californiasan franciscoSan FranciscoUSA department of pediatrics and institute for human genetics university of californiasan franciscoSan FranciscoUSA laboratory of skin biology national institute of arthritis and muscular and skin diseasesnational institutes of healthBethesdaUSA physical science division pacific northwest national laboratoriesRichlandUSA department of basic science and craniofacial biology new york university college of dentistryNewYorkUSA department of materials science and engineering northwestern universityevanstonusaEvanstonUSA center for craniofacial molecular biology herman ostrow school of dentistryuniversity of southern californiaLos AngelesUSA the forsyth institute CambridgeUSA department of developmental biology harvard school of dental medicineBostonUSA department of pediatric dentistry university of north caroline school of dentistryChapel HillUSA departments of dermatology and cel&developmental biology perelman school of medicineand department of anatomy&cell biologyschool of dental medicineuniversity of pennsylvaniaPhiladelphiaUSA functional genomics section national institute of dental and craniofacial researchBethesdaUSA division of biosciences ohio state universitycollege of dentistryColumbusUSA department of periodontics and center for craniofacial research and diagnosis texas a&m university college of dentistryDallasUSA center for children’s oral health research and department of orofacial sciences university of californiasan franciscoSan FranciscoUSA biologic and materials sciences and division of prosthodontics university of michiganAnn ArborUSA

The Encouraging Novel Amelogenesis Models and Ex vivo cell Lines （ENAMEL） Development workshop was held on 23 June 2017 at the Bethesda headquarters of the National institute of Dental and Craniofacial Research （NIDCR）. Discussion topics included model organisms, stem cells/cell lines, and tissues/3D cell culture/organoids. Scientists from a number of disciplines, representing institutions from across the United States, gathered to discuss advances in our understanding of enamel, as well as future directions for the field.

关键词： enamel mineralized tissue mineralization ameloblast stem cell

Efficacy of a Topical Aromatic Rub (Vicks VapoRub<sup>®</sup>) on Effects on Self-Reported and Actigraphically Assessed Aspects of Sleep in Common Cold Patients

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Open Journal of Respiratory Diseases 2017年第2期7卷 83-101页

作者： Nayantara Santhi David Ramsey Gill Phillipson David Hull Victoria L. Revell derk-Jan Dijk Surrey Sleep Research Centre School of Biosciences and Medicine Faculty of Health and Medical Sciences University of Surrey Surrey UK The Procter & Gamble Company Mason Business Center Mason Montgomery Road Mason OH USA Procter & Gamble Greater London Innovation Centre Whitehall Lane Egham Surrey UK Surrey-Clinical Research Centre Department of Clinical and Experimental Medicine School of Biosciences and Medicine Faculty of Health and Medical Sciences University of Surrey Surrey UK

Common cold sufferers frequently report sleep disruption during the symptomatic period of infections. We examined the effects of treatment with a topical aromatic pharmaceutical ointment (Vicks VapoRub?), on associated sleep disturbances. The effects of Vicks VapoRub? versus placebo (petrolatum ointment) on subjective and objective measured sleep parameters were assessed in an exploratory study of 100 common cold patients, in a randomized, single blind, controlled, two-arm, parallel design study. The primary efficacy variable was subjective sleep quality measured with the SQSQ (Subjective Quality of Sleep Questionnaire). Additional measures included, ease of falling asleep and depth of sleep (measured with a post-sleep Visual Analog Scale), total sleep time, sleep onset latency, activity score, percentage of sleep, sleep efficiency (measured with actigraphy and SQSQ) and sleep quality index measured with a modified Karolinska Sleep Diary (KSD). The primary endpoint, “How was the quality of your sleep last night?” showed a statistically significant difference in change from baseline in favour of VapoRub treatment (p = 0.0392) versus placebo. Positive effects of VapoRub versus placebo were also observed for “How refreshed did you feel upon waking up?” (p = 0.0122) (SQSQ), “Did you get enough sleep?” (p = 0.0036) (KSD), “How was it to get up?” (p = 0.0120) (KSD) and “Do you feel well-rested?” (p = 0.0125) (KSD). No statistically significant changes from baseline versus placebo were detected in the Actiwatch endpoints. Vicks VapoRub? when applied before retiring to bed can reduce subjective sleep disturbances during a common cold. The results of this exploratory study support the belief among patients that the use of VapoRub improves subjective sleep quality during common cold which was associated with more refreshing sleep.

关键词： Upper Respiratory Tract Infection Common Cold VapoRub Sleep Disturbance Aromatic Oils