检索结果-南通市图书馆

Novel device for monitoring respiratory rate during endoscopy-A thermodynamic sensor

World Journal of Gastrointestinal Pharmacology and Therapeutics 2019年第3期10卷 57-66页

作者： Vaibhav Wadhwa Adalberto J Gonzalez Kristen Selema ronen feldman Rocio Lopez John J Vargo Department of Gastroenterology and Hepatology Cleveland Clinic FloridaWestonFL 33324United States Department of Internal Medicine Cleveland Clinic FloridaWestonFL 33331United States Department of Technology Artep IncorporatedElliot CityMD 21042United States Department of Quantitative Health Sciences Cleveland ClinicClevelandOH 44195United States Department of Gastroenterology and Hepatology Digestive Disease and Surgery InstituteCleveland ClinicClevelandOH 44195United States

BACKGROUND Monitoring ventilation accurately is an indispensable aspect of patient care in procedural *** current gold standard method of monitoring ventilation is by measuring exhaled carbon dioxide concentration,known as capnography.A new device utilizing thermodynamic measurement,the Linshom Respiratory Monitoring Device(LRMD),has been designed to measure respiratory rate(RR)by using the temperature of exhaled *** hypothesized that the temperature sensor is at least equivalent in accuracy to capnography in monitoring *** To determine if the temperature sensor is equivalent to capnography in monitoring procedural *** In this prospective study,participants were individually fitted with a face mask monitored by both LRMD and *** following data were collected:gender,age,body mass index,type of procedure,and doses of *** each patient,we report the mean RR for each device as well as the mean *** analyses were performed using SAS,and a P<0.05 was considered statistically *** Twelve consecutive patients undergoing endoscopic procedures at our institution were *** patients were excluded due to incomplete data,inadequate data,patient cooperation,and capnography ***,we found that LRMD RR highly correlated to capnography RR(P<0.001);the average capnography RR increases by 0.66 breaths for every one additional breath measured by the *** addition,apnea rates were 7.4%for the capnography and 6.4%for the LRMD(95%confidence interval:0.92-1.10).CONCLUSION The LRMD correlated with the gold standard capnography with respect to respiratory rate detection and apnea *** LRMD could be used as an alternative to capnography for measuring respiration in endoscopy.

关键词： Sedation Capnography Linshom Thermodynamic sensor Endoscopy

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Two-photon emission from a superlattice-based superconducting light-emitting structure

引用

Light(Science & Applications) 2024年第7期13卷 1331-1340页

作者： Shlomi Bouscher Dmitry Panna ronen Jacovi Fauzia Jabeen Christian Schneider Sven Höfling Alex Hayat Department of Electrical Engineering TechnionHaifa 32000Israel. Technische Physik Universität WürzburgAm HublandD-97074 WürzburgGermany. Institute of Physics Carl von Ossietzky Universität OldenburgD-26111 OldenburgGermany

Superconductor-semiconductor hybrid devices can bridge the gap between solid-state-based and photonics-based quantum systems,enabling new hybrid computing schemes,offering increased scalability and *** example for a hybrid device is the superconducting light-emitting diode(SLED).SLEDs have been theoretically shown to emit polarization-entangled photon pairs by utilizing radiative recombination of Cooper ***,the twophoton nature of the emission has not been shown experimentally *** demonstrate two-photon emission in a GaAs/AlGaAs *** electroluminescence spectra reveal unique two-photon superconducting features below the critical temperature(Tc),while temperature-dependent photon-pair correlation experiments(g(2)(τ,T))demonstrate temperature-dependent time coincidences below Tc between photons emitted from the *** results pave the way for compact and efficient superconducting quantum light sources and open new directions in light-matter interaction studies.

关键词： photon quantum utilizing

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Exome sequencing identifies a likely causative variant in 53%of families with ciliopathy-related features on renal ultrasound after excluding NPHP1 deletions

引用

Genes & Diseases 2024年第5期11卷 40-43页

作者： Konstantin Deutsch Verena Klambt Thomas M.Kitzler Tilman Jobst-Schwan ronen Schneider Florian Buerger Steve Seltzsam Sherif El Desoky Jameela A.Kari Farkhanda Hafeez Maria Szczepanska Loai A.Eid Hazem S.Awad Muna Al-Saffar Neveen A.Soliman Velibor Tasic Camille Nicolas-Frank Kirollos Yousef Luca M.Schierbaum Sophia Schneider Abdul Halawi Izzeldin Elmubarak Katharina Lemberg Shirlee Shril Shrikant M.Mane Nancy Rodig Friedhelm Hildebrandt Division of Nephrology Department of PediatricsBoston Children’s HospitalHarvard Medical SchoolBostonMA 02215USA Department of Pediatric Gastroenterology Nephrology and Metabolic DiseasesCharite Universitatsmedizin BerlinBerlin 13353Germany Berlin Institute of Health at Charitee Universitatsmedizin Berlin BIH Biomedical Innovation AcademyBIH Charite Clinician Scientist ProgramBerlin 10178Germany Department of Nephrology and Hypertension FriedrichAlexander-Universitat Erlangen-NurnbergErlangen 91054Germany Department of Pediatrics Faculty of Medicine King Abdulaziz UniversityPediatric Nephrology Center of ExcellenceKing Abdulaziz University HospitalJeddah 21589Saudi Arabia Department of Pediatric Nephrology The Children’s Hospital and Institute of Child HealthLahore 54000Pakistan Department of Pediatrics Faculty of Medical Sciences in ZabrzeMedical University of Silesia in KatowiceKatowice 40-752Poland Dubai Hospital and Al-Jalila Children’s Specialty Hospital Kidney Center of ExcellenceDubai 4545United Arab Emirates Department of Genetics and Genomics UAE UniversityAbu Dhabi 15551United Arab Emirates Department of Pediatrics Division of Genetics and GenomicsBoston Children’s HospitalHarvard Medical SchoolBostonMA 02215USA Department of Pediatrics Center of Pediatric Nephrology and TransplantationKasr Al Ainy School of MedicineCairo UniversityCairo 11562Egypt Egypt Center for Research and Regenerative Medicine(ECRRM) Cairo 11511Egypt Medical Faculty Skopje University Children’s HospitalSkopje 1000North Macedonia Department of Genetics Yale University School of MedicineNew HavenCT 06520USA

Nephronophthisis-related ciliopathies(NPHP-RC)represent one of the most common causes of chronic kidney disease in the first three decades of life and are characterized by a broad genetic and clinical heterogeneity.1 To date,more than 90 genes have been identified that cause autosomalrecessive NPHP-RC if mutated,accounting for up to 60%of cases.1 Among these,homozygous deletions of NPHP1 are the most common *** genes localize to primary cilia,basal bodies,or the centrosome and lead to a primary ciliary disruption if mutated,thereby causing a broad phenotypical spectrum.1 Patients that suffer from NPHP-RC can either have an isolated renal phenotype,such as polyuria,polydipsia,decreased urinary concentration ability,and secondary enuresis due to loss of tubular function,or present with extrarenal symptoms including retinal degeneration,cerebellar vermis hypoplasia,or hepatic *** are often diagnosed in early adolescence,reaching end-stage renal disease before 25 years of age,but early onset and rapidly progressive forms of NPHP-RC also exist.1 Renal ultrasound indicates kidneys of normal or reduced renal length with increased echogenicity and corticomedullary cysts.

关键词： degeneration urinary likely

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Surroundings affect slip length dynamics in nanoscale friction through contact stiffness and damping

引用

Friction 2023年第2期11卷 216-227页

作者： Simona SKURATOVSKY Liron AGMON Enrico GNECCO ronen BERKOVICH Department of Chemical Engineering Ben-Gurion University of the NegevBeer-Sheva 8410501Israel Marian Smoluchowski Institute of Physics Jagiellonian UniversityLojasiewicza 11Krakow 30-348Poland Ilze Katz Institute for Nanoscience and Technology Ben-Gurion University of the NegevBeer-Sheva 8410501Israel

Friction force microscopy (FFM) explores the interaction in a sliding contact on the nanoscale, providing information on the frictional dynamics and lateral contact stiffness with lattice resolution. Recent FFM measurements on a NaCl crystal immersed in liquid (ethanol) surroundings displayed an increase of the effective contact stiffness, K_(eff), with the applied load, differently from similar measurements performed under ultra-high vacuum (UHV) conditions, where K_(eff) showed negligible load dependency. Additionally, under UHV conditions multiple slip length friction with increasing load was reported, while in ethanol surroundings only single (lattice unit length) slips were observed. Our current understanding of this behavior relates the transition from single jumps to multiple jumps dynamics to the normal load (manifested through the amplitude of the interaction potential at the contact, U0) and to the damping of the system. Here we have incorporated the effect of the load dependency on both U0 and K_(eff) within Prandtl‒Tomlinson based simulations, accompanied by variations in the damping coefficient of the system. Introducing the experimentally observed load dependency to K_(eff) resulted indeed in single slip jumps at critical damping, while multiple slip jumps were obtained at constant K_(eff). The average slip length increased with the normal load, particularly when the system became underdamped. Our work provides a glimpse on the relation between the characteristic observables in atomic-scale sliding friction (maximal slip forces, stiffness, and slip dynamics) with respect to their governing parameters (corrugation energy, effective stiffness, and damping). While common understanding in nanotribology relates the effect of surrounding media mainly to the interaction potential at the contact, here we show that the media can also greatly affect the elastic interaction, and consequently play an important role on the transition from single to multiple stick-s

关键词： friction force microscopy(FFM) nanoscale friction multiple jumps Prandtl‒Tomlinson model effective stiffness damping

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

A comparison of stick and slip contact conditions for a coated sphere compressed by a rigid flat

引用

Friction 2017年第3期5卷 326-338页

作者： Shai ronen Roman GOLTSBERG Izhak ETSION Department of Mechanical Engineering Technion Haifa 32000 Israel

A finite element analysis is used to study the elastic-plastic contact of a coated sphere compressed by a rigid flat under the stick contact *** was done for a wide range of hard coating material properties and coating thicknesses.A comparison with the slip contact condition is presented in terms of the critical contact parameters (at yield inception) and plasticity *** expressions are provided for critical interferences of the first and second yield inceptions,in the coating and on the substrate side of the interface,*** expression is also provided for the dimensionless coating thickness for optimal resistance to plasticity under the stick contact ***,the relations between different contact parameters in the elastic-plastic regime are *** general,it was found that the contact condition has a negligible effect on the contact parameters,except for phenomena occurring close to the contact area.

关键词： contact mechanics coatings stick elastic-plastic

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

The impact of aging on cardiac remodeling in chronic mitral regurgitation

引用

Journal of Geriatric Cardiology 2023年第10期20卷 748-755页

作者： David Leibowitz Donna Zwas ronen Beeri Ronny Alcalai Israel Gotsman Heart Institute Hadassah Medical Center and Faculty of MedicineHebrew University of JerusalemJerusalemIsrael

BACKGROUND Chronic mitral regurgitation(MR)is a volume overload state that causes dilatation of the left sided cardiac *** presence of significant dilatation is considered an indication for mitral valve intervention,however,aging may affect left ventricular(LV)remodeling independently of valvular *** objective of this study was to examine age-related changes in cardiac remodeling in a broad population of patients with chronic *** Consecutive subjects that underwent echocardiography examinations recorded in the echocardiography database of a university-affiliated laboratory were *** were categorized into none/mild,moderate or severe *** purposes of analysis of differences with aging,the population was divided into groups above and below 70 years of age and standard echocardiographic measurements were compared between the *** A total of 3492 subjects with at least moderate MR(mean age:76 years,52%female)were included in the study and compared to 18,250 subjects with none or mild *** patients had significantly smaller LV end-diastolic diameters and volumes and significantly larger left atrial(LA)volumes when compared to the younger *** volume index increased in both age groups as MR severity increased,while LV end-diastolic volume increased with increasing MR only in the younger *** Cardiac remodeling in chronic MR is significantly influenced by *** based recommendations of timing of mitral valve interventions in asymptomatic MR patients,based on assessment of LA and LV remodeling,may need to take age into account.

关键词： remodeling mitral cardiac

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Follow the Leader:Preference for Specific Amino Acids Directly Following the Initial Methionine in Proteins of Different Organisms

引用

Genomics, Proteomics & Bioinformatics 2010年第3期8卷 180-189页

作者： ronen Shemesh Amit Novik Yossi Cohen Compugen Ltd.

It is well established that the vast majority of proteins of all taxonomical groups and species are initiated by an AUG codon, translated into the amino acid methionine （Met）. Many attempts were made to evaluate the importance of the sequences surrounding the initiation codon, mostly focusing on the RNA sequence. However, the role and importance of the amino acids following the initiating Met residue were rarely investigated, mostly in bacteria and fungi. Herein, we computationally examined the protein sequences of all major taxonomical groups represented in the Swiss-Prot database, and evaluated the preference of each group to specific amino acids at the positions directly following the initial Met. The results indicate that there is a species-specific preference for the second amino acid of the majority of protein sequences. Interestingly, the preference for a certain amino acid at the second position changes throughout evolution from lysine in prokaryotes, through serine in lower eukaryotes, to alanine in higher plants and animals.

关键词： amino acid initial methionine translation ribosome computational biology bioinformatics

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Significant exercise limitations after recovery from MIS-C related myocarditis

引用

World Journal of Pediatrics 2023年第12期19卷 1149-1154页

作者： Gur Mainzer Merav Zucker-Toledano Moneera Hanna ronen Bar-Yoseph Einat Kodesh Pediatric Heart Institute Edmond and Lily Safra Children’s HospitalSheba Medical Center52621 Tel HashomerIsrael Pediatric Cardiology Department Hadassah Medical CenterJerusalemIsrael Pediatric Cardiology Unit Padeh Medical CenterPoriyaIsrael Pediatric Cardiology Institute Ruth Children’s HospitalRambam Health Care CampusHaifaIsrael Pediatric Pulmonary Institute Ruth Children’s HospitalRambam Health Care CampusHaifaIsrael The Technion Faculty of Medicine HaifaIsrael Department of Physical Therapy Faculty of Social Welfare and Health ScienceUniversity of HaifaHaifaIsrael

Background Myocarditis is one of the presentations of multisystemic infammatory syndrome in children(MIS-C)following coronavirus disease 2019(COVID-19).Although the reported short-term prognosis is good,data regarding medium-term functional capacity and limitations are *** study aimed to evaluate exercise capacity as well as possible cardiac and respiratory limitations in children recovered from MIS-C related *** Fourteen patients who recovered from MIS-C related myocarditis underwent spirometry and cardiopulmonary exercise testing(CPET),and their results were compared with an age-,sex-,weight-and activity level-matched healthy control group(n=14).Results All participants completed the CPET with peak oxygen uptake(peak.V O2),and the results were within the normal range(MIS-C 89.3%±8.9%and Control 87.9%±13.7%predicted.V O2).Five post-MIS-C patients(35%)had exerciserelated cardio-respiratory abnormalities,including oxygen desaturation and oxygen-pulse fattening,compared to none in the control *** MIS-C group also had lower peak exercise saturation(95.6±3.5 vs.97.6±1.1)and lower breathing reserve(17.4%±7.5%vs.27.4%±14.0%of MVV).Conclusions Patients who recovered from MIS-C related myocarditis may present exercise *** assessment(e.g.,CPET)should be included in routine examinations before allowing a return to physical activity in post-MIS-C ***,longer term studies assessing functional capacity and focusing on physiological mechanisms are needed.

关键词： Cardiopulmonary exercise testing COVID 19 Hypoxemia Myocarditis

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Reclamation of oil-induced soil hydrophobicity in the hyper-arid Evrona Nature Reserve,southern Israel

引用

Pedosphere 2021年第6期31卷 892-902页

作者： Zheng LI Zeev ronen Faina GELMAN Onn CROUVI Gilboa ARYE Ravid ROSENZWEIG Zuckerberg Institute for Water Research Jacob Blaustein Institutes for Desert ResearchBen-Gurion University of the NegevSede Boqer Campus 8499000(Israel) Geological Survey of Israel 32 Yeshayahu Leibowitz St.Jerusalem 9692100(Israel) French Associates Institute for Agriculture and Biotechnology of Drylands Blaustein Institutes for Desert Research Ben-Gurion University of the NegevSede Boqer Campus 8499000(Israel)

Two oil spills occurred in the Evrona Nature Reserve(southern Israel),in 1975 and *** oil contamination induced highly persistent soil *** objective of this study was to investigate the decrease in oil-induced soil hydrophobicity under different environmental conditions and to assess the relationship between the hydrophobicity and hydrocarbon content.A laboratory incubation experiment was conducted over 1.5 years to monitor the soil hydrophobicity and total hydrocarbon concentration under different environmental *** hypothesized that the addition of water(20% or 50% saturation),nutrients,and biosurfactants can accelerate the reduction in hydrophobicity and decomposition of *** drop penetration time and molarity of ethanol droplet tests were used to assess soil *** parallel,alkane composition and total petroleum hydrocarbons were evaluated to indicate oil *** addition of water,nutrients,and biosurfactants resulted in a concomitant reduction in hydrophobicity and hydrocarbon concentration of varying degrees,exhibiting enhanced degradation and hydrophobicity reduction observed in treatments to which nutrients and biosurfactants were *** the end of the incubation,however,soil hydrophobicity in all treatments remained severe,even though total petroleum hydrocarbon removal was fairly high and reached 40%–80%in the treatments to which water with or without nutrients and/or surfactants was added.

关键词： biodegradation biosurfactant hydrocarbons oil spill soil water repellency water drop penetration time

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Catalysts for the hydrogen evolution reaction in alkaline medium:Configuring a cooperative mechanism at the Ag-Ag_(2)S-MoS_(2) interface

引用

Journal of Energy Chemistry 2022年第11期31卷 481-488,I0013页

作者： Avraham Bar-Hen Simon Hettler Ashwin Ramasubramaniam Raul Arenal ronen Bar-Ziv Maya Bar Sadan Department of Chemistry Ben-Gurion University of the NegevBeer-Sheva 8410501Israel Department of Chemistry Nuclear Research Center NegevP.O.Box 9001Beer-Sheva 84190Israel Laboratorio de Microscopías Avanzadas Universidad de Zaragoza50018 ZaragozaSpain Instituto de Nanociencia y Materiales de Aragon CSIC-U.de ZaragozaCalle Pedro Cerbuna 1250009 ZaragozaSpain Department of Mechanical and Industrial Engineering University of MassachusettsAmherstMA 01003United States ARAID Foundation 50018 ZaragozaSpain

Designing electrocatalysts for HER in alkaline conditions to overcome the sluggish kinetics associated with the additional water dissociation step is a recognized challenge in promoting the hydrogen *** this end,delicately tuning the atomic-scale structure and surface composition of nanoparticles is a common strategy and,specifically,making use of hybrid structures,can produce synergistic effects that lead to highly active ***,we present a core-shell catalyst of Ag@MoS_(2)that shows promising results towards the hydrogen evolution reaction(HER)in both 0.5 M H_(2)SO_(4)and 0.5 M *** this hybrid structure,the MoS_(2)shell is strained and defective,and charge transfer occurs between the conductive core and the shell,contributing to the electrocatalytic *** shelling process results in a large fraction of Ag_(2)S in the cores,and adjusting the relative fractions of Ag,Ag_(2)S,and MoS_(2)leads to improved catalytic activity and fast charge-transfer *** suggest that the enhancement of alkaline HER is associated with a cooperative effect of the interfaces,where the Ag(Ⅰ)sites in Ag_(2)S drive the water dissociation step,and the formed hydrogen subsequently recombines on the defective MoS_(2)*** study demonstrates the benefits of hybrid structures as functional nanomaterials and provides a scheme to activate MoS_(2)for HER in alkaline conditions.

关键词： Water splitting Core-shell Catalytic mechanism Electrocatalysis 2D materials

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：