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可修复PEO-PAA互穿网络纳米纤维开发与应用

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可修复PEO-PAA互穿网络纳米纤维开发与应用

Pancreatic cyst dilemma: Between physical and biochemical markers

2024第五届全国功能高分子材料学术研讨会

作者：张琦 Ekaterina Zaslavski Gleb Vasilyev Mor Boas eyal Zussman 张瑞岩

随着科学技术发展和生活水平的提高,人们对轻便和精准的柔性电子器件需求度越来越高。弹性优异的聚丙烯酸（PAA）与聚氧乙烯（PEO）由于可逆氢键互穿网络作用可开发具有修复功能的聚合物材料。然而,PAA和PEO混合溶液中强烈的氢键作用,... 详细信息

随着科学技术发展和生活水平的提高,人们对轻便和精准的柔性电子器件需求度越来越高。弹性优异的聚丙烯酸（PAA）与聚氧乙烯（PEO）由于可逆氢键互穿网络作用可开发具有修复功能的聚合物材料。然而,PAA和PEO混合溶液中强烈的氢键作用,只能通过经典的层层自组装（Layer-by-Layer）来制备柔性电子器件基底,过程繁琐。因此有必要开发一步法制备PEO-PAA互穿网络纳米纤维的方法。进一步地添加导电粒子,可以用于柔性传感器、电子皮肤等,制成的纤维可以与皮肤有良好的贴合性。可以更精准的进行健康检测。

关键词：氢键互穿网络柔性电子器件

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World Journal of Gastroenterology 2021年第41期27卷 7207-7209页

作者： Iyad Khamaysi eyal Zussman The Ruth and Bruce Rappaport Faculty of Medicine Technion-Israel Institute of TechnologyHaifa 3109601Israel Department of Gastroenterology Rambam Health Care CampusHaifa 3109601Israel NanoEngineering Group Faculty of Mechanical EngineeringTechnion-Israel Institute of TechnologyHaifa 3109601Israel

Physical analysis of the pancreatic cystic lesions(PCLs)fluid as expressed by the rheological behavior(“string sign”)can improve the diagnostic yield and should be integrated in every multimodal PCLs workup.

关键词： Pancreatic cyst Fluid analysis String sign Rheology

Quantification and depth distribution analysis of carbon to nitrogen ratio in forest soils using reflectance spectroscopy

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International Soil and Water Conservation Research 2023年第1期11卷 112-124页

作者： Asa Gholizadeh Mohammadmehdi Saberioon Nastaran Pouladi eyal Ben-Dor Department of Soil Science and Soil Protection Faculty of AgrobiologyFood and Natural ResourcesCzech University of Life Sciences Prague16500PragueCzech Republic Section 1.4 Remote Sensing and Geoinformatics Helmholtz Centre Potsdam GFZ German Research Centre for GeosciencesTelegrafenberg14473Potsdam Germany knoell Germany GmbH Konrad-Zuse-Ring68163MannheimGermany Remote Sensing Laboratoryeparmentof Ggraphy and HumanEnvionmnt Porter Schoolf Evionmntand Earth ScienceTelAvivUniverty 69978TelAvivIsrael

Forest soils have large contents of carbon(C)and total nitrogen(TN),which have significant spatial variability laterally across landscapes and vertically with depth due to decomposition,erosion and ***,the ratio of C to TN contents(C∶N),a crucial indicator of soil quality and health,is also different depending on soil *** attributes can cost-effectively and rapidly be estimated using visible-near infrared-shortwave infrared(VNIR-SWIR)***,the effect of different soil layers,particularly over large scales of highly heterogeneous forest soils,on the perfor-mance of the technique has rarely been *** study evaluated the potential of VNIR-SWIR spectroscopy in quantification and variability analysis of C∶N in soils from different organic and min-eral layers of forested sites of the Czech *** each site,we collected samples from the litter(L),fragmented(F)and humus(H)organic layers,and from the A_(1)(depth of 2-10 cm)and A_(2)(depth of 10-40 cm)mineral layers providing a total of 2505 *** vector machine regression(SVMR)was used to train the prediction models of the selected attributes at each individual soil layer and the merged layer(profile).We further produced the spatial distribution maps of C∶N as the target attribute at each soil *** showed that the prediction accuracy based on the profile spectral data was adequate for all ***,F was the most accurately predicted layer,regardless of the soil attribute.C∶N models and maps in the organic layers performed well although in mineral layers,models were poor and maps were reliable only in areas with low and moderate C∶*** the other hand,the study indicated that reflectance spectra could efficiently predict and map organic layers of the forested ***,in mineral layers,high values of C∶N(≥50)were not detectable in the map created based on the reflectance *** general,the study suggests that VNIR-SWIR spectrosc

关键词： Forest soil Soilorganiccarbon C:N Soilhorizons VNIR-SWIRspectroscopy

Framework of behavioral indicators evaluating TB health promotion outcomes: a modified Delphi study of TB policymakers and health workers

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Infectious Diseases of Poverty 2015年第1期4卷 447-459页

作者： Ying Li John Ehiri Daiyu Hu eyal Oren Jia Cao Department of Social Medicine and Health Service Management Third Military Medical UniversityNo.30 Gaotanyan RoadShapingba districtChongqingChina Department of Health Promotion Sciences Mel and Enid Zuckerman College of Public HealthUniversity of ArizonaTucsonUSA Chongqing Institute of TB Prevention and Treatment Jiulongpo districtChongqingChina Department of Epidemiology&Biostatistics Mel and Enid Zuckerman College of Public HealthUniversity of ArizonaTucsonUSA Institute of Toxicology Third Military Medical UniversityNo.30 Gaotanyan RoadShapingba districtChongqingChina

Background:Although TB health promotion directed at policy makers and healthcare workers(HCWs)is considered important to tuberculosis(TB)control,no indicators currently assess the impact of such promotional *** article is the second in a series of papers that seek to establish a framework of behavioral indicators for outcome evaluation of TB health promotion,using the Delphi *** the first article,we sought to establish a framework of behavioral indicators for outcome evaluation of TB health promotion among TB suspects and *** objective of this second article is to present an indicator framework that can be used to assess behavioral outcomes of TB health promotion directed at policy makers and ***:A two-round,modified Delphi method was used to establish the *** experts who were knowledgeable and experienced in the field of TB control were consulted in Delphi surveys.A questionnaire was developed following 4 steps,and involved ranking indicators on a five-point Likert *** consensus level was 70%.Median,mode,and Coefficient of variation(CV)were used to describe expert *** authority coefficient(Cr)was used to assess the degree of each expert’s ***:Consensus was achieved following the two survey rounds and several iterations among the *** TB health-promotion activities directed at policymakers,the experts reached consensus on 2 domains(“Resource inputs”and“Policymaking and monitoring behaviors”),4 subdomains(“Human resources”among others),and 13 indicators(“Human resources per 100,000 person”among others).For TB health-promotion activities directed at HCWs,the experts reached consensus on 5 domains(“Self-protective behaviors”among others),6 sub-domains(“Preventing infection”among others),and 15 indicators(“Average hours of daily workplace disinfection by ultraviolet radiation”among others).Conclusions:This study identified a conceptual framework of core behavioral indicators to evalua

关键词： Health promotion Evaluation Policymakers TB healthcare workers TB HCWs Indicator Delphi method

Removing Moisture Effect on Soil Reflectance Properties: A Case Study of Clay Content Prediction

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Pedosphere 2019年第4期29卷 421-431页

作者： Yaron OGEN Shira FAIGENBAUM-GOLOVIN Amihai GRANOT Yoel SHKOLNISKY Naftaly GOLDSHLEGER eyal BEN-DOR The Porter School of Environmental Studies Tel Aviv University Tel Aviv 6997801 (Israel) Department of Applied Mathematics Tel Aviv University Tel Aviv 6997801 (Israel) Remote Sensing Laboratory Department of Geography and the Human Environment Tel Aviv University Tel Aviv 6997801 (Israel) Department of Civil Engineering Ariel University Ariel 407000 (Israel)

Visible, near-infrared and shortwave-infrared(VNIR-SWIR) spectroscopy is an efficient approach for predicting soil properties because it reduces the time and cost of analyses. However, its advantages are hampered by the presence of soil moisture, which masks the major spectral absorptions of the soil and distorts the overall spectral shape. Hence, developing a procedure that skips the drying process for soil properties assessment directly from wet soil samples could save invaluable time. The goal of this study was twofold:proposing two approaches, partial least squares(PLS) and nearest neighbor spectral correction(NNSC), for dry spectral prediction and utilizing those spectra to demonstrate the ability to predict soil clay content. For these purposes, we measured 830 samples taken from eight common soil types in Israel that were sampled at 66 different locations. The dry spectrum accuracy was measured using the spectral angle mapper(SAM) and the average sum of deviations squared(ASDS), which resulted in low prediction errors of less than 8% and 14%, respectively. Later, our hypothesis was tested using the predicted dry soil spectra to predict the clay content, which resulted in R^2 of 0.69 and 0.58 in the PLS and NNSC methods, respectively. Finally, our results were compared to those obtained by external parameter orthogonalization(EPO) and direct standardization(DS). This study demonstrates the ability to evaluate the dry spectral fingerprint of a wet soil sample, which can be utilized in various pedological aspects such as soil monitoring, soil classification,and soil properties assessment.

关键词： dry spectral fingerprint nearest neighbor spectral correction partial least squares reflectance spectra soil moisture soil property spectroscopy wet soil

Factors associated with surgery in patients with intra-abdominal fistulizing Crohn's disease

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World Journal of Gastroenterology 2016年第47期22卷 10380-10387页

作者： Shaul Yaari Ariel Benson eyal Aviran Naama Lev Cohain Ran Oren Jacob Sosna Eran Israeli IBD Unit Institute of Gastroenterology and Liver Diseases Hadassah-Hebrew University Medical Center Department of Radiology and Medical Imaging Hadassah-Hebrew University Medical Center

AIM To characterize radiological and clinical factors associated with subsequent surgical intervention in Crohn's disease(CD) patients with intra-abdominal *** From a cohort of 1244 CD patients seen over an eight year period(2006 to 2014), 126 patients were identified as having intra-abdominal fistulae, and included in the study. Baseline patient information was collected from the medical records. Imaging studies were assessed for: anatomic type and number of fistulae; diameter of the inflammatory conglomerate; length of diseased bowel; presence of a stricture with pre-stenotic dilatation; presence of an abscess; lymphadenopathy; and the degree of bowel enhancement. Multivariate analysis for the prediction of abdominal surgery was calculated via Generalized Linear *** In total, there were 193 fistulae in 132 patients, the majority(52%) being entero-enteric. Fifty-nine(47%) patients underwent surgery within one year of the imaging study, of which 36(29%) underwent surgery within one month. Radiologic features that were associated with subsequent surgery included: multiple fistulae(P = 0.009), presence of stricture(P = 0.02), and an entero-vesical fistula(P = 0.01). Evidence of an abscess, lymphadenopathy, or intense bowel enhancement as well as C-reactive protein levels was not associated with an increased rate of surgery. Patients who were treated after the imaging study with combination immunomodulatory and anti-TNF therapy had significantly lower rates of surgery(P = 0.01). In the multivariate analysis, presence of a stricture [RR 4.5(1.23-16.3), P = 0.02] was the only factor that increased surgery *** A bowel stricture is the only factor predicting an increased rate of surgery. Radiological parameters may guide in selecting treatment options in patients with fistulizing CD.

关键词： Crohn’s disease Fistula Cross-sectional imaging Intra-abdominal surgery Magnetic resonance imaging Computed tomography-scan

Reducing dietary sodium of dairy cows fed a low-roughages diet affect intake and feed efficiency,but not yield

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Animal Nutrition 2023年第1期12卷 1-6页

作者： Yehoshav A.Ben Meir Yoav Shaani Daniel Bikel Yuri Portnik Shamai Jacoby Uzi Moallem Joshua Miron eyal Frank Department of Ruminant Science Institute of Animal ScienceAgricultural Research Organization(ARO)Rishon Lezion 7528809Israel Department of Animal Production Extension ServiceMinistry of AgricultureRishon Lezion 7528809Israel

Wastewater from dairy farms has become a major environmental and economical *** residue in treated and untreated wastewater from dairy farms used for irrigation can lead to soil and groundwater salinization,with the risk of soil *** examined the effect of reducing sodium fed to mid to late lactating cows from 0.61%(high sodium[HS])to 0.45%(low sodium[LS])of dry matter on dry matter intake(DMI),milk and milk-component yields,eating behavior,apparent total track digestibility,feed efficiency,and sodium excretion into the *** randomly assigned 28 multiparous high-yielding(>35 kg milk/d)cows to 1 of 2 treatment groups(LS or HS)in a crossover design,with 7 d of adaptation and 28 d of data *** sodium in the diet reduced sodium intake from 171 to 123 g/d while lowering sodium excreted in the manure by 22%.Energy corrected milk(ECM)yield(37.4 kg/d)and sodium excretion in the milk(33.7 g/d)were similar for both *** DMI of LS cows was lower than that of HS cows(27.3 vs.28 kg/d)and consequently,feed efficiency of the LS cows was higher(1.40 vs.1.35 ECM/DMI).Eating rate,meal and visit frequency,and eating time were similar for both treatments;meal and visit duration were longer for the HS cows,and meal and visit sizes tended to be *** of DM and amylase-treated neutral detergent fiber remained *** on the results of this study,and discussed considerations,we recommend lowering the dietary sodium content for mid to late lactating cows in commercial herds to 0.52%of DM,in order to reduce sodium excretion to the environment via urine.

关键词： Mineral absorption Sodium Eating behavior Environmentally friendly dairy farm

Israel and the Arab World： In the Shadow of Regional Upheaval from the ＂Arab Spring＂ to the Summer of ISIS

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International Relations and Diplomacy 2015年第5期3卷 329-340页

作者： eyal Zisser Tel Aviv University Tel Aviv Israel

In the winter of 2010, the ＂Spring of the Arab Nations＂ suddenly erupted, leading to the collapse of the Arab old order and the fall of many Arab regimes that up until then were perceived as strong and solid. In many of the Arab states, the ＂Arab Spring＂, which began as a popular protest degenerated into a bloody civil war, and in the case of Syria it led in the summer of 2014 to the emergence onto the regional stage of the Islamic State of Iraq and Syria （ISIS）. The earthquake in the Arab world was perceived by many Israelis as presenting a possible threat, not only to the regional stability and quiet that had reigned along lsrael＇s borders with its Arab neighbors, but also to the very existence of the peace agreements that had been a most important element in Israel＇s national security conception for four decades. In the face of this challenge, Israel chose a passive approach and to allow events to work themselves out and drag it along with them. In some of the arenas matters worked themselves out favorably, for example, in Egypt. In some of the arenas, like Syria and Lebanon, Israel remained a worried observer from the sidelines. In Syria chaos and Islamic extremism spread all over, and in Lebanon Hizballah continued to grow stronger. Meanwhile, the Palestinian arena with all its problems remained on ice, lingering in a state of waiting. Only time will tell whether Israel＇s policy was prudent or simply evasive. Was Israel behaving like the ostrich, burying its head in the sand and avoiding like fire any policy initiative？ Or was Israel＇s policy prudent, sound, and necessary given the limitations on Israel＇s power？

关键词： Israel the Arab Spring Syria Egypt the Middle East the Arab-Israeli conflict

Etiology and long-term outcome of extrahepatic portal vein obstruction in children

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World Journal of Gastroenterology 2010年第39期16卷 4968-4972页

作者： Batia Weiss eyal Shteyer Asaf Vivante Drora Berkowitz Shimon Reif Zvi Weizman Yoram Bujanover Rivka Shapiro Division of Pediatric Gastroenterology Hepatology and NutritionEdmond and Lily Safra Children's Hospital Sackler Faculty of Medicine Tel-Aviv University Division of Pediatric Gastroenterology Hepatology and NutritionHadassah Medical CenterThe Hebrew University School of Medicine Division of Pediatric Gastroenterology Hepatology and NutritionMeyer Children's HospitalRambam Medical Center Rappaport School of Medicine TechnionIsrael Institute of Technology Division of Pediatric Gastroenterology Hepatology and NutritionDana Children's HospitalSouraski Medical Center Division of Pediatric Gastroenterology Hepatology and NutritionSoroka Medical Center Faculty of Health Sciences Ben-Gurion University of the Negev Department of Pediatric Gastroenterology and Nutrition Division of Pediatric TransplantationSchneider Children's Hospital

AIM:To study the management and outcome of children with extrahepatic portal vein obstruction(EHPVO) in a whole country ***:A nationwide multicenter retrospective case series of children with EHPVO was *** on demographics,radiographic studies,laboratory workup,endoscopic and surgical procedures,growth and development,were extracted from the patients' *** of clinical presentation,etiology of EHPVO,management and outcome were ***:Thirty patients,13 males and 17 females,19(63.3%) Israeli and 11(36.7%) Palestinians,were included in the *** at presentation was 4.8± 4.6 years,and mean follow-up was 4.9±4.3 *** anomalies were found in 4 *** incidence of EHPVO in Israeli children aged 0-14 years was 0.72/*** factors for EHPVO were detected in 13(43.3%)patients,including 9 patients(30%) with perinatal risk factors,and 4 patients(13.3%) with prothrombotic states:two had low levels of protein S and C,one had lupus anticoagulant,and one was homozygous for methyltetrahydrofolate reductase *** 56.6% of patients,no predisposing factors were *** most common presenting symptoms were an incidental finding of splenomegaly(43.3%),and upper gastrointestinal bleeding(40%).No differences were found between Israeli and Palestinian children with regard to age at presentation,etiology and clinical *** occurred in 18 patients(60%),at a median age of 3 *** or esophageal banding was performed in 20 *** sclerotherapy complications were *** shunts were performed in 11 patients(36.6%),at a median age of 11(range 3-17)years:splenorenal in 9,mesocaval in 1,and a meso-Rex shunt in 1 *** patient underwent splenectomy due to severe *** were followed up for a median of 3(range 0.5-15)*** patient died aged 3 years due to mucopolysaccharidase deficiency type Ⅲ.None of the patients died due to gastrointestin

关键词： Children Extrahepatic Obstruction Outcome Portal Vein