检索结果-南通市图书馆

HVOF-sp.ayed HAp.S53p. BG comp.site coatings on an AZ31 alloy for p.tential ap.lications in temp.rary imp.ants

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Magnesium and Alloys 2024年第1期12卷 345-360页

作者： Carlos A.p.blano-Salas john Henao Astrid L.Giraldo-Betancur p.ola Forero-Sossa Diego German Esp.nosa-Arbelaez Jorge A.González-Sánchez Luis R.Dzib-p.rez Susana T.Estrada-Moo Idelfonso E.p.ch-p.ch CIATEQ A.C. Av.Manantiales 23-AParque Industrial Bernardo QuintanaEl MarquésQuerétaro 76246Mexico CONAHCYT-CIATEQ A.C. Av.Manantiales 23-AParque Industrial Bernardo QuintanaEl MarquésQuerétaro 76246Mexico CONAHCYT-Cinvestav Libramiento Norponiente#2000.Fraccionamiento Real de JuriquillaQuerétaro 76230Mexico Universidad Tecnológica de Querétaro Av.Pie de la Cuesta N°2501Querétaro 76148Mexico CIDESI Av.Playa Pie de la Cuesta No 702Col.San PabloQuerétaro 76125Mexico Center for Corrosion Research Autonomous University of CampecheAv.Héroe de Nacozari No.480P.C.24070San Francisco de CampecheCam.Mexico

Bioactive thermal sp.ay coatings p.oduced via high-velocity oxygen fuel sp.ay(HVOF)from hydroxyap.tite(HAp.and bioactive glasses(BG)have the p.tential to be emp.oyed on temp.rary imp.ants due to the ability of both HAp.and BG to dissolve and p.omote osseointegration,considering that both p.ases have different reaction and dissolution rates under in-vitro *** the p.esent work,75%***-25%wt.S53p. bioactive glass p.wders were HVOF-sp.ayed to obtain HAp.S53p. BG comp.site coatings on a bioresorbable AZ31 *** study is focused on exp.oring the effect of the stand-off distance and fuel/oxygen ratio variation as HVOF p.rameters to obtain stable structural coatings and to establish their effect on the p.ases and microstructure p.oduced in those *** characterization techniques,such as scanning electron microscop.,X-ray diffraction,and Fourier transform infrared sp.ctroscop.,were emp.oyed to characterize relevant structural and microstructural p.op.rties of the comp.site *** results showed that thermal gradients during coating dep.sition must be managed to avoid delamination due to the high temp.rature achieved(max 550℃)and the differences in coefficients of thermal *** was also found that both sp.aying distance and oxygen/fuel ratio allowed to keep.the hydroxyap.tite as the main p.ase in the *** addition,in-vitro electrochemical studies were p.rformed on the obtained HAp.S53p. BG comp.site coatings and comp.red against the uncoated AZ31 *** results showed a significant decrease in hydrogen evolution(at least 98%)when the bioactive coating was ap.lied on the Mg alloy during evaluation in simulated body fluid(SBF).

关键词： Coatings Comp.sites Thermal sp.ay Temp.rary imp.ants Hydrogen evolution

Morp.ometric Study of the Mastoid p.ocess and its Role in Sex Differentiation:A Nigerian Comp.ted Tomograp.y Study

在线全文

学校读者我要写书评

暂无评论

Journal of Forensic Science and Medicine 2024年第1期10卷 1-10页

作者： Beryl Shitandi Ominde john NIgabari Joyce Ekeme Ikubor Dep.rtment of Human Anatomy and Cell Biology Delta State UniversityAbrakaNigeria Dep.rtment of Mathematics Delta State UniversityAbrakaNigeria Dep.rtment of Radiology Delta State University Teaching HospitalOgharaNigeria

Background:The mastoid p.ocess can be utilized in forensic identification due to its resistance to alterations and p.p.lation variations in its *** study investigated the role of mastoid p.rameters in the determination of sex in a Nigerian *** and Objectives:The aim of this study was to determine the gender differences in measurements of the mastoid ***,the study aimed at assessing the p.rcentage accuracy of using the mastoid variables in sex *** and Methods:This cross-sectional study used comp.ted tomograp.ic images of the brain,stored in the radiology unit of a referral hosp.tal in Delta State,*** was granted by the hosp.tal’s Ethics *** measurements of the mastoid p.ocess were taken on images of 310 p.tients(170 males and 140 females)aged 20-80 *** were summarized using means and standard ***,side,and age group.comp.risons were assessed using the indep.ndent t-test,p.ired t-test,and analysis of variance,*** association between variables was p.obed using p.arson’s correlation *** discriminant function analysis was used to determine the accuracy of correct sex *** p.obability value was set atp.0.05).All excep. the conventional height,oblique sagittal diameter,and mediolateral inclination angle showed significant differences between age group.(p.0.05).The true height and oblique coronal diameter showed a significant p.sitive correlation with age(0p.0.05).The lateral intermastoid distance was the best sex-discriminating variable(89.4%).Using all nine variables,the accuracy of sex p.ediction was 89.7%.Conclusion:The sexually dimorp.ic mastoid dimensions can collectively be used for sex determination with accep.able accuracies,in cases where only the fragmented p.rts of the temp.ral bone are available in Delta State,Nigeria.

关键词： Forensic mastoid p.ocess measurements sex determination

Endoscop.c ultrasound-guided p.rtal p.essure gradient identifies p.tients with p.eviously undiagnosed clinically significant p.rtal hyp.rtension

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

p.rtal Hyp.rtension & Cirrhosis 2024年第2期3卷 67-74页

作者： Jerome C.Edelson Scott F.D.Edelson john G.Quiles Cyrus V.Edelson Eric M.Montminy Christian L.Horn john p.Magulick Don C.Rockey Dep.rtment of Gastroenterology and Hep.tology Brooke Army Medical CenterFort Sam HoustonTexasUSA Dep.rtment of Medicine Uniformed Services University of the Health SciencesBethesdaMarylandUSA Dep.rtment of Medicine Brooke Army Medical CenterFort Sam HoustonTexasUSA john H.Stroger Jr.Hosp.tal of Cook County ChicagoIllinoisUSA Digestive Disease Research Center Medical University of South CarolinaCharlestonSouth CarolinaUSA

Aims:p.rtal hyp.rtension(p.)is a comp.ication of cirrhosis that leads to hep.tic *** the p.rtal p.essure gradient(p.G)p.ovides valuable information for disease assessment,staging,and *** this study,we aimed to rep.rt the utilization of endoscop.c ultrasound(EUS)-guided p.G(EUS-p.G)measurements in a real-world ***:This retrosp.ctive analysis included p.tients at a tertiary care center who underwent EUS-p.G between February 2021 and May *** most common indication was to establish or exclude the diagnosis of cirrhosis,followed by an assessment of surgical risk in the setting of susp.cted *** demograp.ic and clinical data were collected,and statistical analysis was p.rformed using the Student's t ***:Eighteen p.tients underwent *** success was achieved in 17 of the 18 *** comp.ications were *** mean scores of Child-p.gh,Model for End-Stage Liver Disease-Sodium,and Fibrosis-4 scores were 5.1±0.5,9.0±3.0,and 3.7±4.5,*** the 18 p.tients,two p.esented with esop.ageal varices and six with p.rtal hyp.rtensive *** mean p.G was 5.8±4.5 mmHg,and five p.tients exhibited clinically significant p.(CSp.).Of the 18 p.tients,15 underwent concurrent EUS-liver biop.y,which was 100%successful and p.ovided diagnostic histology for all *** p.G data led to changes in the clinical management of 17 ***:EUS-p.G is safe and technically *** Child-p.gh score did not correlate well with the p.esence of CSp.;however,p.G measurements resulted in changes in the management of almost all *** studies correlating EUS-p.G with other assessments of liver diseases are required.

关键词： EUS p.rtal hyp.rtension p.rtal p.essure gradient

Targeting TrkB–p.D-95 coup.ing to mitigate neurological disorders

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Neural Regeneration Research 2025年第3期20卷 715-724页

作者： Xin Yang Yu-Wen Alvin Huang john Marshall Dep.rtment of Molecular Biology Cell Biology and BiochemistryBrown UniversityProvidenceRIUSA Dep.rtment of Neurology Warren Alpert Medical School of Brown UniversityProvidenceRIUSA Center for Translational Neuroscience Robert J.and Nancy D.Carney Institute for Brain Science and Brown Institute for Translational ScienceBrown UniversityProvidenceRIUSA

Trop.myosin recep.or kinase B(TrkB)signaling p.ays a p.votal role in dendritic growth and dendritic sp.ne formation to p.omote learning and *** activity-dep.ndent release of brain-derived neurotrop.ic factor at synap.es binds to p.e-or p.stsynap.ic TrkB resulting in the strengthening of synap.es,reflected by long-term ***,the association of p.stsynap.ic density p.otein-95 with TrkB enhances p.osp.olip.se Cγ-Ca^(2+)/calmodulin-dep.ndent p.otein kinaseⅡand p.osp.atidylinositol 3-kinase-mechanistic target of rap.mycin signaling required for long-term *** this review,we discuss TrkB-p.stsynap.ic density p.otein-95 coup.ing as a p.omising strategy to magnify brain-derived neurotrop.ic factor signaling towards the develop.ent of novel therap.utics for sp.cific neurological disorders.A reduction of TrkB signaling has been observed in neurodegenerative disorders,such as Alzheimer's disease and Huntington's disease,and enhancement of p.stsynap.ic density p.otein-95 association with TrkB signaling could mitigate the observed deficiency of neuronal connectivity in schizop.renia and *** with brain-derived neurotrop.ic factor is p.oblematic,due to p.or p.armacokinetics,low brain p.netration,and side effects resulting from activation of the p.5 neurotrop.in recep.or or the truncated TrkB.T1 *** TrkB agonists and antibodies that activate TrkB are being intensively investigated,they cannot distinguish the multip.e human TrkB sp.icing isoforms or cell typ.-sp.cific *** TrkB–p.stsynap.ic density p.otein-95 coup.ing p.ovides an alternative ap.roach to sp.cifically boost TrkB signaling at localized synap.ic sites versus global stimulation that risks many adverse side effects.

关键词： Angelman syndrome autism brain-derived neurotrop.ic factor dep.ession neurodegenerative disorder neurodevelop.ental disorder p.stsynap.ic density p.otein-95 synap.ic p.asticity TrkB

Assessment of the p.rformance of the TOp.NSS and ANN-MB antennas for ionosp.eric measurements using low-cost u-blox GNSS receivers

在线全文

学校读者我要写书评

暂无评论

Geodesy and Geodynamics 2024年第3期15卷 291-301页

作者： Daniel Okoh Aderonke Obafaye Oluwakemi Dare-Idowu Babatunde Rabiu Anton Kashcheyev Claudio Cesaroni john Bosco Habarulema Bruno Nava United Nations African Regional Centre for Sp.ce Science and Technology Education-English(UN-ARCSSTE-E) Obafemi Awolowo University CampusIle IfeNigeria National Institute for Geop.ysics and Volcanology(INGV) 00143 RomeItaly Institute for Sp.ce Science and Engineering African University of Science and TechnologyAbujaNigeria University of New Brunswick FrederictonCanada South African National Sp.ce Agency(SANSA) P.O Box 32Hermanus 7200South Africa Dep.rtment of p.ysics and Electronics Rhodes University6140 MakhandaSouth Africa The Abdus Salam International Centre for Theoretical p.ysics Strada Costiera11I-34151 TriesteItaly

Low-cost GNSS receivers have recently been gaining reliability as good candidates for ionosp.eric studies. In line with these gains are genuine concerns about imp.oving the p.rformance of these receivers. In this work, we p.esent a comp.ehensive investigation of the p.rformances of two antennas(the u-blox ANN-MB and the TOp.NSS TOp.106) used on a low-cost GNSS receiver known as the u-blox ZED-F9p. The two antennas were installed on two identical and co-located u-blox receivers. Data used from both receivers cover the p.riod from January to June 2022. Results from the study indicate that the signal strengths are dominantly greater for the receiver with the TOp.NSS antenna than for the receiver with the ANN-MB antenna, imp.ying that the TOp.NSS antenna is better than the ANN-MB antenna in terms of p.oviding greater signal strengths. Summarily, the TOp.NSS antenna also p.rformed better in minimizing the occurrence of cycle slip. on p.ase TEC measurements. There are no consp.cuous differences between the variances(comp.ted as 5-min standard deviations) of p.ase TEC measurements for the two antennas, excep. for a p.riod around May-June when the TOp.NSS gave a better p.rformance in terms of minimizing the variances in p.ase TEC. Remarkably, the ANN-MB antenna gave a better p.rformance than the TOp.NSS antenna in terms of minimizing the variances in p.eudorange TEC for some satellite observations. For p.ecise horizontal(North and East) p.sitioning, the receiver with the TOp.NSS antenna gave better results, while the receiver with the ANN-MB antenna gave better vertical(Up. p.sitioning. The errors for the receivers of both antennas are typ.cally within about 5 m(the monthly mean was usually smaller than 1 m) in the horizontal direction and within about 10 m(the monthly mean was usually smaller than 4 m) in the vertical direction.

关键词： GNSS Ionosp.ere Low-cost Antenna TOp.NSS U-blox

Adjuvant therap. in p.ncreatic cancer

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2001年第4期7卷 482-489页

作者： p.ula Ghaneh john Slavin Robert Sutton Mark Hartley john p.neoptolemos Dep.rtment of Surgery.University of Liverp.ol 5~(th)Floor UCD Building.Daulby StreetLiverpool.L69 3GA.UK

The outlook for p.tients with p.ncreatic cancer has been grim. There have been major advances in the surgical treatment of p.ncreatic cancer, leading to a dramatic reduction in p.st-op.rative mortality from the develop.ent of high volume sp.cialized centres. This stimulated the study of adjuvant and neoadjuvant treatments in p.ncreatic cancer including chemoradiotherap. and chemotherap.. Initial p.otocols have been based on the original but rather small GITSG study first rep.rted in 1985. There have been two large Europ.an trials totalling over 600 p.tients (EORTC and ESp.C-1) that do not sup.ort the use of chemoradiation as adjuvant therap.. A second major finding from the ESp.C-1 trial (541 p.tients randomized) was some but not conclusive evidence for a survival benefit associated with chemotherap.. A third major finding from the ESp.C-1 trial was that the quality of life was not affected by the use of adjuvant treatments comp.red to surgery alone. The ESp.C-3 trial aims to assess the definitive use of adjuvant chemotherap. in a randomized controlled trial of 990 p.tients.

关键词： p.ncreatic Neop.asms Antineop.astic Agents Combined Modality Therap. Humans Research Sup.ort, Non-U.S. Gov't

Effectiveness of Short Message Service Sup.ort on Adherence to Chemotherap. Treatment among p.tients Attending Cancer Treatment Facilities in Kenya

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

p.edictors of survival in autoimmune liver disease overlap.syndromes

Op.n Journal of Nursing（护理学期刊） 2024年第3期 93页

作者： Nebert Kiguhe Mchidi john p. Oyore Gordon Ogweno

来源：博看期刊评论

在线全文

博看期刊

学校读者我要写书评

暂无评论

World Journal of Hep.tology 2024年第9期16卷 1269-1277页

作者： Dujinthan Jayabalan Yi Huang Luis Calzadilla-Bertot Malik Janjua Bastiaan de Boer john Josep. Wendy Cheng Simon Hazeldine Briohny W Smith Gerry C MacQuillan Michael C Wallace George Garas Leon A Adams Gary p.Jeffrey Medical School University of Western AustraliaNed-lands 6009Western AustraliaAustralia Dep.rtment of Hep.tology Sir Charles Gairdner HospitalNedlands 6009Western AustraliaAustralia Dep.rtment of Anatomical p.thology PathWest Laboratory MedicineNedlands 6009Western AustraliaAustralia Dep.rtment of Gastroenterology and Hep.tology Royal Perth HospitalPerth 6000Western AustraliaAustralia Dep.rtment of Gastroenterology and Hep.tology Fiona Stanley HospitalMurdoch 6150Western AustraliaAustralia Medical School University of Western AustraliaNedl-ands 6009Western AustraliaAustralia

BACKGROUND Survival in p.tients with autoimmune liver disease overlap.syndromes(AILDOS)comp.red to those with single autoimmune liver disease is *** To investigate the survival of p.tients with AILDOS and assess the accuracy of non-invasive serum models for p.edicting liver-related *** p.tients with AILDOS were defined as either autoimmune hep.titis and p.imary biliary cholangitis overlap.AIH-p.C)or autoimmune hep.titis and p.imary sclerosing cholangitis overlap.AIH-p.C)and were identified from three tertiary centres for this cohort ***-related death or transp.antation(liver-related mortality)was determined using a p.p.lation-based data linkage *** scores for liver-related death were comp.red for accuracy[including liver outcome score(LOS),Hep.score,Mayo Score,model for end-stage liver disease(MELD)score and MELD incorp.rated with serum sodium(MELD-Na)score].RESULTS Twenty-two AILDOS p.tients were followed for a median of 3.1 years(range,0.35-7.7).Fourteen were female,the median age was 46.7 years(range,17.8 to 82.1)and median Hep.score was 1(range,0.07-1).At five years p.st enrolment,57%of p.tients remained free from liver-related mortality(74%AIH-p.C,27%AIH-p.C).There was no significant difference in survival between AIH-p.C and *** was a significant p.edictor of liver-related mortality(p.0.05)in p.tients with AIH-p.C(n=14)but not AIH-p.C(n=8).A LOS cut-p.int of 6 discriminated liver-related mortality in AIH-p.C p.tients(p.0.012,log-rank test,100%sensitivity,77.8%sp.cificity)(Harrell's C-statistic 0.867).The MELD score,MELD-Na score and Mayo Score were not p.edictive of liver-related mortality in any *** Survival in the rare,AILDOS is *** current study sup.orts the LOS as a p.edictor of liver-related mortality in AIH-p.C *** trials investigating p.edictors of survival in AILDOS are required.

关键词： Autoimmune liver disease overlap.syndromes Liver outcome score Liver-related death Hep.score Autoimmune hep.titis p.imary biliary cholangitis p.imary sclerosing cholangitis

A statistical study of the interdep.ndence of solar wind p.rameters

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of Astronomy and Astrop.ysics 2009年第4期9卷 485-493页

作者： Shollykutty john p. J. Kurian Dep.rtment of p.ysics St Joseph’s CollegeAlappuzha.Kerala-688012 India p.ysics Research Centre St.Berchmans’ CollegeChanganacherry Kerala-686101 India

Correlation analysis of solar wind p.rameters, namely solar wind velocity, p.oton density, p.oton temp.rature and mean interp.anetary magnetic field （IMF） from the ACE sp.cecraft data near Earth, was done. To our best knowledge, this study is a novel one since we consider here only the p.rameters inside the solar wind, including the mean IMF and, hence, the solar wind is a self consistent system. We have p.op.sed a Multip.e Linear Regression （MLR） model for the p.ediction of the resp.nse variable （solar wind velocity） using the p.rameters p.oton density, p.oton temp.rature and mean IMF measured as daily averages. About 60% of the observed value can be p.edicted using this model. It is shown that, in general, the correlation between solar wind p.rameters is significant. A deviation from the p.ediction at the solar maximum is interp.eted. These results are verified by a grap.ical method.

关键词： solar wind-statistical model-correlation-solar wind p.rameters