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树枝状聚合物的化学性质和在反渗透阻垢上的应用

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工业水处理 2006年第7期26卷 60-62页

作者：齐兴宇 david l.russell 上海赛沃环保科技有限公司上海200120

树枝状聚合物是一种高度分叉的具有三维立体构造的高分子,虽然在自然界里树枝状聚合物很常见,但其工业应用却是刚刚开始。作者首先介绍了由于其独特的几何构造和化学特征,树枝状聚合物在反渗透水处理中所表现出的巨大的工业应用优势,进... 详细信息

树枝状聚合物是一种高度分叉的具有三维立体构造的高分子,虽然在自然界里树枝状聚合物很常见,但其工业应用却是刚刚开始。作者首先介绍了由于其独特的几何构造和化学特征,树枝状聚合物在反渗透水处理中所表现出的巨大的工业应用优势,进而重点介绍了相比于直链型聚合物,基于树枝状聚合物的阻垢剂可以更加高效地控制反渗透原水中的无机盐垢、胶体和有机物。最后得出结论,树枝状聚合物的独特性能可以提供给用户更加全面的反渗透系统给水控制,降低膜的污染倾向并减少膜的清洗需求。

关键词：树枝状聚合物反渗透阻垢剂

无磷、环保、树枝状聚合物在反渗透阻垢领域的应用

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无磷、环保、树枝状聚合物在反渗透阻垢领域的应用

Silk-based nerve guidance conduits with macroscopic holes modulate the vascularization of regenerating rat sciatic nerve

全国冶金节水与废水利用技术研讨会

作者：齐兴宇李超 david l.russell 美国PWT中国代表处上海赛沃环保科技有限公司

树枝状聚合物是一种高度分叉的具有三维立体构造的高分子。虽然在自然界里树枝状聚合物很常见,但其工业应用却是刚刚开始。本文首先介绍了树枝状聚合物独特的几何构造和化学特征,而由此带来在反渗透水处理中的巨大工业应用优势。进而重... 详细信息

树枝状聚合物是一种高度分叉的具有三维立体构造的高分子。虽然在自然界里树枝状聚合物很常见,但其工业应用却是刚刚开始。本文首先介绍了树枝状聚合物独特的几何构造和化学特征,而由此带来在反渗透水处理中的巨大工业应用优势。进而重点介绍了相比于常规阻垢剂配方包括直链型聚合物,基于树枝状聚合物的阻垢剂可以更加高效的控制反渗透原水中的无机盐垢,胶体甚至有机物。最后得出结论,树枝状聚合物的独特性能可以提供给用户更加全面的反渗透系统给水控制,降低膜的污染倾向并减少膜的清洗需求。

关键词：树枝状聚合物反渗透阻垢剂

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Neural Regeneration Research 2025年第6期20卷 1789-1800页

作者： Carina Hromada Patrick Heimel Markus Kerbl lászlóGál Sylvia Nürnberger Barbara Schaedl James Ferguson Nicole Swiadek Xavier Monforte Johannes C.Heinzel Antal Nógrádi Andreas H.Teuschl-Woller david Hercher Department life Science Engineering University of Applied Sciences Technikum WienViennaAustria Austrian Cluster for Tissue Regeneration ViennaAustria ludwig Boltzmann Institute for Traumatology The Research Center in Cooperation with AUVAViennaAustria University Clinic of Dentistry Medical University of ViennaViennaAustria Department of Plastic Reconstructive and Aesthetic SurgeryLandesklinikum Wiener Neustadt2700 Wiener NeustadtAustria Department of Anatomy Histology and EmbryologyAlbert Szent-Györgyi Medical SchoolUniversity of SzegedSzegedHungary Medical University of Vienna Department of Orthopedics and Trauma SurgeryDevision of Trauma SurgeryViennaAustria Department of Hand- PlasticReconstructive and Burn SurgeryBG Unfallklinik TuebingenUniversity of TuebingenTuebingenGermany

Peripheral nerve injuries induce a severe motor and sensory deficit. Since the availability of autologous nerve transplants for nerve repair is very limited, alternative treatment strategies are sought, including the use of tubular nerve guidance conduits(tNGCs). However, the use of tNGCs results in poor functional recovery and central necrosis of the regenerating tissue, which limits their application to short nerve lesion defects(typically shorter than 3 cm). Given the importance of vascularization in nerve regeneration, we hypothesized that enabling the growth of blood vessels from the surrounding tissue into the regenerating nerve within the tNGC would help eliminate necrotic processes and lead to improved regeneration. In this study, we reported the application of macroscopic holes into the tubular walls of silk-based tNGCs and compared the various features of these improved silk^(+) tNGCs with the tubes without holes(silk^(–) tNGCs) and autologous nerve transplants in an 8-mm sciatic nerve defect in rats. Using a combination of micro-computed tomography and histological analyses, we were able to prove that the use of silk^(+) tNGCs induced the growth of blood vessels from the adjacent tissue to the intraluminal neovascular formation. A significantly higher number of blood vessels in the silk^(+) group was found compared with autologous nerve transplants and silk^(–), accompanied by improved axon regeneration at the distal coaptation point compared with the silk^(–) tNGCs at 7 weeks postoperatively. In the 15-mm(critical size) sciatic nerve defect model, we again observed a distinct ingrowth of blood vessels through the tubular walls of silk^(+) tNGCs, but without improved functional recovery at 12 weeks postoperatively. Our data proves that macroporous tNGCs increase the vascular supply of regenerating nerves and facilitate improved axonal regeneration in a short-defect model but not in a critical-size defect model. This study suggests that further optimizatio

关键词： axon regeneration blood vessel functional recovery macroporous nerve lesion peripheral nerve repair sciatic nerve silk-based nerve guidance conduit vascularization

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健康行为改善常规的概念分析

International Journal of Nursing Sciences 2023年第3期10卷 277-287页

作者： Sunny Y.Ruggeri Amanda Emerson Cynthia l.russell School of Nursing and Health Studies University of Missouri-Kansas CityMissouriUSA Dr.lillian R.Goodman Department of Nursing Worcester State UniversityMassachusettsUSA University of Kansas Medical Center University of Kansas School of NursingKansasUSA

目的慢性病患者常常有不健康的生活习惯,他们需要明确的指导,以建立和维持健康行为改善常规。本研究旨在根据文献中健康行为改善常规的应用情况,对其概念进行综合定义。方法于2022年1一5月,检索CINAHl、Medline、Scopus和谷歌学术中包... 详细信息

目的慢性病患者常常有不健康的生活习惯,他们需要明确的指导,以建立和维持健康行为改善常规。本研究旨在根据文献中健康行为改善常规的应用情况,对其概念进行综合定义。方法于2022年1一5月,检索CINAHl、Medline、Scopus和谷歌学术中包含健康行为改善情景下常规的定义的英文文献,未限定发表日期。采用系统分析方法和Rodgers演化概念分析法,描述健康行为改善常规的属性、前置因素和后续影响,形成该概念的定义。结果共纳人24篇文章。改善健康行为常规概念的属性为重复的模式、患者的可控制性、以目标为导向的健康及融入整个生活方式。前置因素为个体特征和环境因素。后续影响为个体和环境层面的心理、身体和社会健康。结论健康行为改善常规的明确定义可为未来研究提供启发,并为支持慢性病患者建立和保持健康生活习惯的临床护理干预提供依据,从而改善患者结局。

关键词：慢性病健康行为病人生活质量

Effects of therapeutic horseback riding on post-traumatic stress disorder in military veterans

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Military Medical Research 2018年第1期5卷 19-32页

作者： Rebecca A.Johnson david l.Albright James R.Marzolf Jessica l.Bibbo Hayley D.Yaglom Sandra M.Crowder Gretchen K.Carlisle Amy Willard Cynthia l.russell Karen Grindler Steven Osterlind Marita Wassman Nathan Harms Research Center for Human Animal interaction College of Veterinary Medicine University of Missouri Columbia MO 65211 USA. ResearchService Harry S. Truman Memorial Veterans' Hospital ColumbiaMO 65211 USA. School of Social Work University of AlabamaTuscaloosa AL 35487 USA. Occupational Health Services Harry S. Truman Memorial Veterans' Hospital Columbia MO 65211 USA. Center for the Human-Animal Bond College of Veterinary MedicinePurdue University West Lafayette IN 47907 USA. School of Health Professions University of Missouri Columbia MO 65211 USA. TREE House of Greater St. louis Wentzville MO 63385 USA. School of Nursing and Health Studies University of Missouri-Kansas CityKansas City MO 64108 USA. Cedar Creek Therapeutic Riding Center Columbia MO 65201 USA. College of Education School and Counseling Psychology University of Missouri Columbia MO 65211USA. Ride-On St. louis Kimmswick MO 63053 USA.

Background:large numbers of post-deployment *** are diagnosed with post-traumatic stress disorder(PTSD)and/or traumatic brain injury(TBI),leading to an urgent need for effective interventions to reduce symptoms and increase veterans’*** includes anxiety,flashbacks,and emotional *** symptoms increase health care costs for stress-related illnesses and can make veterans’civilian life ***:We used a randomized wait-list controlled design with repeated measures of *** veterans to address our specific aim to test the efficacy of a 6-week therapeutic horseback riding(THR)program for decreasing PTSD symptoms and increasing coping self-efficacy,emotion regulation,social and emotional *** participants were recruited and 29 enrolled in the randomized *** were randomly assigned to either the horse riding group(n=15)or a wait-list control group(n=14).The wait-list control group experienced a 6-week waiting period,while the horse riding group began *** wait-list control group began riding after 6 weeks of participating in the control *** and health history information was obtained from all the *** symptoms were measured using the standardized PTSD Checklist-Military Version(PCl-M).The PCl-M as well as other instruments including,The Coping Self Efficacy Scale(CSES),The Difficulties in Emotion Regulation Scale(DERS)and The Social and Emotional loneliness Scale for Adults-short version(SElSA)were used to access different aspects of individual well-being and the PTSD ***:Participants had a statistically significant decrease in PTSD scores after 3 weeks of THR(P≤0.01)as well as a statistically and clinically significant decrease after 6 weeks of THR(P≤0.01).logistic regression showed that participants had a 66.7%likelihood of having lower PTSD scores at 3 weeks and 87.5%likelihood at 6 *** the generalized linear model(GlM),our ANOVA findings for the coping self

关键词： Animal-assisted intervention Coping self-efficacy Emotion regulation Military veterans Post-traumatic stress disorder Social engagement Therapeutic horseback riding Traumatic brain injury

Direct-to-indirect mapping for optimal low-thrust trajectories

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Astrodynamics 2024年第1期8卷 27-46页

作者： david Ottesen Ryan P.russell Department of Aerospace Engineering and Engineering Mechanics The University of Texas at AustinAustinTexas78712USA

Optimal,many-revolution spacecraft trajectories are challenging to solve.A connection is made for a class of models between optimal direct and indirect *** transfers that minimize thrust-acceleration-squared,primer vector theory maps direct,many-impulsive-maneuver trajectories to the indirect,continuous-thrust-acceleration *** mapping algorithm is independent of how the direct solution is obtained and requires only a solver for a boundary value problem and its partial derivatives.A lambert solver is used for the two-body problem in this *** mapping is simple because the impulsive maneuvers and co-states share the same linear space around an optimal *** numerical results,the direct coast-impulse solutions are demonstrated to converge to the indirect continuous solutions as the number of impulses and segments *** two-body design space is explored with a set of three many-revolution,many-segment examples changing semimajor axis,eccentricity,and *** first two examples involve a small change to either semimajor axis or eccentricity,and the third example is a transfer to geosynchronous *** a single processor,the optimization runtime is seconds to minutes for revolution counts of 10 to 100,and on the order of one hour for examples with up to 500 *** of these thrust-acceleration-squared solutions are good candidates to start a homotopy to a higher-fidelity minimization problem with practical constraints.

关键词： direct optimization indirect optimization impulsive maneuvers lambert's problem two-body dynamics primer vectortheory

Cytomegalovirus-associated colitis causing diarrhea in an immunocompetent patient

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World Journal of Gastroenterology 2006年第42期12卷 6898-6899页

作者： Dan Carter david Olchovsky russell Pokroy david Ezra Internal Medicine A Sheba Medical Center Tel Hashomer Israel

Cytomegalovirus （CMV） colitis rarely occurs in immunocompetent patients. We report a case of disabling and life threatening diarrhea in an immunocompetent elderly woman due to CMV colitis. The diagnosis of CMV was based on histological examination of tissues biopsied at colonoscopy, positive CMV antigen and high CMV-lgM titer in peripheral blood samples and a good response to systemic gancyclovir treatment. We conclude that CMV should be considered in the differential diagnosis of colitis in elderly immunocompetent patients.

关键词： Cytomegalovirus Colitis Immunocompetent Diarrhea Gancyclovir

Configuration-Sensitive Molecular Sensing on Doped Graphene Sheets

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Nano Research 2010年第7期3卷 472-480页

作者： John russell Petr Král Department of Chemistry University of Illinois at ChicagoChicagoIL 60607USA

We show by molecular dynamics simulations that configuration-sensitive molecular spectroscopy can be realized on optimally doped graphene sheets vibrated by an oscillatory electric *** selectivity of the spectroscopy is achieved by maximizing Coulombic binding between the detected molecule and a specific nest,formed for this molecule on the graphene sheet by substituting selected carbon atoms with boron and nitrogen *** can detect binding of different isomers to the nest from the frequency shifts of selected vibrational modes of the combined *** an illustrative example,we simulate detection of hexanitrostilbene enantiomers in chiral nests formed on graphene.

关键词： Molecular sensing enantiomer graphene functionalization molecular dynamics

Complement-dependent neuroinflammation in spinal cord injury:from pathology to therapeutic implications

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Neural Regeneration Research 2025年第5期20卷 1324-1335页

作者： Hassan Saad Bachar El Baba Ali Tfaily Firas Kobeissy Juanmarco Gutierrez Gonzalez Daniel Refai Gerald R.Rodts Christian Mustroph david Gimbel Jonathan Grossberg Daniel l.Barrow Matthew F.Gary Ali M.Alawieh Department of Neurosurgery Emory University School of MedicineAtlantaGAUSA Department of Neurology Yale UniversityNew HavenCTUSA Center for Neurotrauma Multiomics&Biomarkers(CNMB)Morehouse School of MedicineAtlantaGAUSA

Spinal cord injury remains a major cause of disability in young adults,and beyond acute decompression and rehabilitation,there are no pharmacological treatments to limit the progression of injury and optimize recovery in this *** the thorough investigation of the complement system in triggering and propagating cerebral neuroinflammation,a similar role for complement in spinal neuroinflammation is a focus of ongoing *** this work,we survey the current literature investigating the role of complement in spinal cord injury including the sources of complement proteins,triggers of complement activation,and role of effector functions in the *** study relevant data demonstrating the different triggers of complement activation after spinal cord injury including direct binding to cellular debris,and or activation via antibody binding to damage-associated molecular *** effector functions of complement have been implicated in spinal cord injury,and we critically evaluate recent studies on the dual role of complement anaphylatoxins in spinal cord injury while emphasizing the lack of pathophysiological understanding of the role of opsonins in spinal cord *** this pathophysiological review,we systematically review the different translational approaches used in preclinical models of spinal cord injury and discuss the challenges for future translation into human *** review emphasizes the need for future studies to dissect the roles of different complement pathways in the pathology of spinal cord injury,to evaluate the phases of involvement of opsonins and anaphylatoxins,and to study the role of complement in white matter degeneration and regeneration using translational strategies to supplement genetic models.

关键词： complement neuroinflammation neuroplasticity regeneration spinal cord injury targeted therapy