检索结果-南通市图书馆

Congenital Heart Disease 2024年第2期19卷 185-195页

作者： Camden L.Hebson Kyle Bliton Amr Y.Hammouda Kaitlyn Barr W.Hampton Gray Mohini Gunnett waldemar f.carlo Department of Pediatrics Division of Pediatric CardiologyUniversity of Alabama BirminghamBirmingham35233USA Department of Pediatrics Division of Pediatric PulmonologyUniversity of Alabama BirminghamBirmingham35233USA Department of Pediatrics University of Alabama BirminghamBirmingham35233USA Department of Surgery Division of Cardiothoracic SurgeryUniversity of Alabama BirminghamBirmingham35233USA

D-transposition of the great arteries(d-TGA)is surgically repaired with the arterial switch operation(ASO)with excellent results,however short and long-term morbidities still develop including neurocognitive *** significant central sleep apnea is uncommon in non-premature infants,but when present indicates immature autonomic control of respiration likely due to a neurologic *** report the unanticipatedfinding of central sleep apnea in four-term neonates with d-TGA after uncomplicated ASO,with the short-term complication of delayed hospital discharge and long-term concerns regarding this early marker of brain immaturity and its hindrance to normal *** this report,we will review each patient’s clinical course and then examine the literature on pediatric central sleep apnea,neurodevelopmental outcomes after ASO,and the important overlap of these entities in the care of patients going forward.

关键词： Transposition congenital heart disease sleep apnea polysomnography

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

你的奖励由谁买单:信用卡市场的再分配

新金融 2024年第1期 59-66页

作者： Sumit Agarwal Andrea Presbitero Andre f.Silva carlo Wix 新加坡国立大学国际货币基金组织经济政策研究中心美国联邦储备委员会

将信用卡奖励作为一个理想的实验进行研究,以量化零售金融市场中消费者之间的再分配。通过对有奖励和无奖励的信用卡进行比较,可以发现:无论收入如何,成熟的消费者都能从有奖励的信用卡中获利,而有的消费者则要付出代价。为了探究其背... 详细信息

将信用卡奖励作为一个理想的实验进行研究,以量化零售金融市场中消费者之间的再分配。通过对有奖励和无奖励的信用卡进行比较,可以发现:无论收入如何,成熟的消费者都能从有奖励的信用卡中获利,而有的消费者则要付出代价。为了探究其背后的机制,本文利用银行在信用卡层面主动提高账户限额的方法进行研究。结果表明:奖励卡会诱发更多的消费,使消费者有更高的未付余额;消费者在偿还信用卡时还会遵循次优平衡匹配启发模式,从而产生更高的成本;银行通过提供比无奖励的同类信用卡更低的利率来激励消费者使用奖励卡;从教育程度较低的地区到较高的地区,从较贫穷的地区到较富裕的地区,信用卡奖励以重新分配的方式扩大了现有的差距。本刊编译此篇美联储的工作论文,以期就信用卡相关问题为读者带来启发。

关键词：消费金融信用卡金融复杂性用卡奖励

Antioxidant treatment for oligoasthenoteratozoospermia and varicocele:a DBPC trial to evaluate the impact of age and body mass index

在线全文

学校读者我要写书评

暂无评论

Asian Journal of Andrology 2024年第3期26卷 239-244页

作者： Gian Maria Busetto Bernarde f Rodrigues Ashraf Virmani Andrea Checchia Antonella Ninivaggi Anna Ricapito Giovanni Barbieri Piero fischetti Ugo G falagario Pasquale Annese Nicola d’Altilia Vito Mancini Matteo ferro felice Crocetto Angelo Porreca carlo Bettocchi Luigi Cormio Ashok Agarwal Giuseppe Carrieri University of foggia Foggia 71122Italy Department of Urology and Renal Transplantation Policlinico of FoggiaFoggia 71122Italy Department of Urology Human Reproduction SectionFederal University of Sao PauloSao Paulo 05403-000Brazil Alfasigma Healthscience Utrecht 3528 BGThe Netherlands Urology Unit “G.Tatarella”HospitalCerignola 71042Italy Urology Unit European Institute of Oncology(IEO)IRCCSMilan 20142Italy University of Naples federico II Naples80126Italy Department of Oncological Urology Veneto Institute of Oncology(IOV)IRCCSPadua 35039Italy Urology Unit “L.Bonomo”HospitalAndria 70031Italy Global Andrology forum Moreland HillsOH 44022USA

Oxidative stress is one of the main mechanisms responsible for male *** conditions such as varicocele,obesity,advanced age,and lifestyle can lead to an increase in reactive oxygen species,causing an oxidative imbalance in the *** are sensitive to reactive oxygen species and require energy to carry out their main function of fertilizingthe *** reactive oxygen species can affect sperm metabolism,leading to immobility,impaired acrosome reaction,and celldeath,thereby impairing reproductive *** double-blind randomized study evaluated the effect of supplementation withL-carnitine,acetyl-L-carnitine,vitamins,and other nutrients on semen quality in 104 infertile patients with or without varicocele,while also investigating the impact of factors such as obesity and advanced age on *** concentration significantlyincreased in the supplemented group compared to the placebo group(P=0.0186).Total sperm count also significantly increasedin the supplemented group(P=0.0117),as did sperm motility(P=0.0120).The treatment had a positive effect on patients upto 35 years of age in terms of sperm concentration(P=0.0352),while a body mass index(BMI)above 25 kg m^(−2) had a negativeeffect on sperm concentration(P=0.0110).Results were not showing a net benefit in stratifying patients in accordance withtheir BMI since sperm quality increase was not affected by this *** conclusion,antioxidant supplementation may bebeneficial for infertile patients and has a more positive effect on younger patients with a normal weight.

关键词： aging antioxidants body mass index oligoasthenoteratozoospermia varicocele

Programming nonlinear propagation for efficient optical learning machines

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Advanced Photonics 2024年第1期6卷 73-83页

作者： Ilker Oguz Jih-Liang Hsieh Niyazi Ulas Dinc Ugur Tegin Mustafa Yildirim carlo Gigli Christophe Moser Demetri Psaltis École Polytechnique fédérale de Lausanne Institute of Electrical and Micro EngineeringEcublensSwitzerland Koc University Department of Electrical and Electronics EngineeringIstanbulTurkey

The ever-increasing demand for training and inferring with larger machine-learning models requires more efficient hardware solutions due to limitations such as power dissipation and *** is a promising contender for providing lower power computation,since light propagation through a nonabsorbing medium is a lossless ***,to carry out useful and efficient computations with light,generating and controlling nonlinearity optically is a necessity that is still *** fibers(MMfs)have been shown that they can provide nonlinear effects with microwatts of average power while maintaining parallelism and low *** propose an optical neural network architecture that performs nonlinear optical computation by controlling the propagation of ultrashort pulses in MMf by wavefront *** a surrogate model,optimal sets of parameters are found to program this optical computer for different tasks with minimal utilization of an electronic *** show a remarkable decrease of 97%in the number of model parameters,which leads to an overall 99%digital operation reduction compared to an equivalently performing digital neural *** further demonstrate that a fully optical implementation can also be performed with competitive accuracies.

关键词： neural networks nonlinear optics fiber optics surrogate optimization neuromorphic computing wavefront shaping

The association of type and number of high-risk criteria with cancer-specific mortality in prostate cancer patients treated with radical prostatectomy

在线全文

学校读者我要写书评

暂无评论

Current Urology 2024年第2期18卷 128-132页

作者： francesco Chierigo Rocco Simone flammia GabrieleSorce Benedikt Hoeh Lukas Hohenhorst Andrea Panunzio Zhe Tian fred Saad Marcus Graefen Michele Gallucci Alberto Briganti francesco Montorsi felix K.H.Chun Shahrokh f.Shariat Alessandro Antonelli Giovanni Guano Guglielmo Mantica Marco Borghesi Nazareno Suardi carlo Terrone Pierre I.Karakiewicz Department of Surgical and Diagnostic Integrated Sciences University of GenovaGenovaItaly IRCCS Ospedale Policlinico San Martino GenovaItaly Cancer Prognostics and Health Outcomes Unit Division of UrologyUniversity ofMontréal Health CenterMontréalQuébecCanada Department of Urology IRCCS Policlinico San MartinoGenovaItaly Department of Maternal-Child and Urological Sciences Sapienza Rome UniversityPoliclinico Umberto I HospitalRomeItaly Department of Urology University Hospital FrankfurtFrankfurt am MainGermany Martini-Klinik Prostate Cancer Center University Hospital Hamburg-EppendorfHamburgGermany Department of Urology University of VeronaAzienda Ospedaliera Universitaria Integrata di VeronaVeronaItaly Division of Experimental Oncology/Unit of Urology URIUrological Research InstituteIRCCS San Raffaele Scientific InstituteMilanItaly Department of Urology Comprehensive Cancer CenterMedical University of ViennaViennaAustria Department of Urology Weill Cornell Medical CollegeNew YorkNYUSA Department of Urology University of Texas SouthwesternDallasTXUSA Department of Urology Second Faculty of MedicineCharles UniversityPragueCzech Republic Institute for Urology and Reproductive Health I.M.Sechenov First Moscow State Medical UniversityMoscowRussia Division of Urology Department of Special SurgeryJordan University HospitalThe University of JordanAmmanJordan

Objectives:This study aimed to test the association between of type and number of D'Amico high-risk criteria(DHRCs)with cancer-specific mortality(CSM)in high-risk prostate cancer patients treated with radical *** and methods:In the Surveillance,Epidemiology,and End Results database(2004–2016),we identified 31,281 radical prostatectomy patients with at least 1 DHRC,namely,prostate-specific antigen(PSA)>20 ng/mL(hrPSA),biopsy Gleason Grade Group(hrGGG)score of 4 and 5,or clinical tumor stage≥T3(hrcT).Multivariable Cox regression models and competing risks regression models(adjusting for other cause mortality)tested the association between DHRCs and 5-year ***:Of 31,281 patients,14,394(67%)exclusively harbored hrGGG,3189(15%)harbored hrPSA,and 1781(8.2%)harbored *** 2132 patients(6.8%)harbored a combination of the 2 DHRCs,and 138(0.6%)had all 3 ***-year CSMrates ranged from 0.9%to 3.0%when any individual DHRC was present(hrcT,hrPSA,and hrGGG,in that order),1.6%to 5.9%when 2 DHRCs were present(hrPSA-hrcT,hrcT-hrGGG,and hrPSA-hrGGG,in that order),and 8.1%when all 3 DHRCs were *** regression models and competing risks regression confirmed the independent predictor status of DHRCs for 5-year CSM that was observed in univariable analyses,with hazard ratios from 1.00 to 2.83 for 1 DHRC,2.35 to 5.88 for combinations of 2 DHRCs,and 7.13 for all 3 ***:Within individual DHRCs,hrcT and hrPSA exhibited weaker effects than hrGGG ***,a dose-response effect was identified according to the number of ***,the type and number of DHRCs allow further risk stratification within the high-risk subgroup.

关键词： High risk prostate cancer Radical prostatectomy Cancer-specific mortality Staging SEER

Locomotor adaptations in Plio-Pleistocene large carnivores from the Italian Peninsula： Palaeoecological implications

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Current Zoology 2011年第3期57卷 269-283页

作者： carlo MELORO Hull York Medical School The University of Hull Loxley Building Cottingham Road Hull HU6 7RX UK

Mammalian carnivores are rarely considered for environmental reconstructions because they are extremely adaptable and their geographic range is usually large. However, the functional morphology of carnivore long bones can be indicative of locomotor behaviour as well as adaptation to specific kind of habitats. Here, different long bone ratios belonging to a subsample of extant large carnivores are used to infer palaeoecology of a comparative sample of Plio-Pleistocene fossils belonging to Italian paleo-communities. A multivariate long bone shape space reveals similarities between extant and fossil carnivores and multiple logistic regression models suggest that specific indices （the brachial and the Mt/f） can be applied to predict adaptations to grassland and tropical biomes. These functional indices exhibit also a phylogenetic signal to different degree. The brachial index is a significant predictor of adaptations to tropical biomes when phylogeny is taken into account, while Mt/f is not correlated anymore to habitat adaptations. However, the proportion of grassland-adapted carnivores in Italian paleo-communities exhibits a negative relationship with mean oxygen isotopic values, which are indicative of past climatic oscillations. As climate became more unstable during the Ice Ages, large carnivore guilds from the Italian peninsula were invaded by tropical/closed-adapted species. These species take advantage of the temperate forest cover that was more spread after 1.0 Ma than in the initial phase of the Quaternary （2.0 Ma） when the climate was more arid [Current Zoology 57 （3）： 269-283, 2011].

关键词： Carnivora Long bones Quaternary Climate change

Biomimetics of Campaniform Sensilla:Measuring Strain from the Deformation of Holes

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 Bionic Engineering 2007年第2期4卷 63-76页

作者： Julian f. V. Vincent Sally E. Clift carlo Menon Department of Mechanical Engineering The University of BathBath BA2 7AYUK Advanced Concepts Team European Space Agency2201 AZ NoordwijkThe Netherlands

We present a bio-inspired strategy for designing embedded strain sensors in space structures. In insects, the campaniform sensillum is a hole extending through the cuticle arranged such that its shape changes in response to loads. The shape change is rotated through 90° by the suspension of a bell-shaped cap whose deflection is detected by a cell beneath the cuticle. It can be sensitive to displacements of the order of 1 nm. The essential morphology, a hole formed in a plate of fibrous composite mate- rial, was modelled by Skordos et al. who showed that global deformation of the plate （which can be flat, curved or a tube） induces higher local deformation of the hole due to its locally higher compliance. further developments reported here show that this approach can be applied to groups of holes relative to their orientation. , The morphology of the sensillum in insects suggests that greater sensitivity can be achieved by arranging several holes in a regular pattern; that if the hole is oval it can be ＂aimed＂ to sense specific strain directions; and that either by controlling the shape of the hole or its relationship with other holes it can have a tuned response to dynamic strains. We investigate space applications in which novel bio-inspired strain sensors could successfully be used.

关键词： campaniform sensillum strain displacement compliance hole remote sensing fibrous composite

Genetic outcomes from the translocations of the critically endangered woylie

在线全文

学校读者我要写书评

暂无评论

Current Zoology 2013年第3期59卷 294-310页

作者： carlo PACIONI Adrian f. WAYNE Peter B. S. SPENCER School of Veterinary and Life Sciences Murdoch University Murdoch 6150 Western Australia Department of Environment and Conservation Science Division Manjimup 6258 Western Australia

Translocations are an important conservation strategy for many species. However simply observing demographic growth of a translocated population is not sufficient to infer species recovery. Adequate genetic representation of the source population（s） and their long-term viability should also be considered. The woylie Bettongia penicillata ogilbyi has been subject to more formal translocations for conservation than any other marsupial that, up until recently, has resulted in one of the most suc- cessful species recoveries in Australia. We used mitochondrial and nuclear DNA markers to assess the genetic outcomes of trans- located woylie populations. These populations have lost genetic variability, differentiated fxom their source population and the supplementation program on two island populations appears to have failed. We discuss the conservation implications that our re- suits have for managing threatened species, outline some general recommendations for the management of present and future translocations and discuss the appropriate sampling design for the establishment of new populations or captive breeding programs that may mitigate the genetic ＇erosion＇ seen in our study species. This research provides some practical outcomes and a pragmatic understanding of translocation biology. The findings are directly applicable to other translocation programs .

关键词： Bettongia penicillata Macropod translocation Supplementation Microsatellites mtDNA

Absolute parameters of the three totally-eclipsing W UMa stars NSVS 2443858,NSVS 780649 and V1098 Her

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Research in Astronomy and Astrophysics 2021年第9期21卷 124-134页

作者： Velimir Popov francesco Acerbi carlo Barani Department of Physics and Astronomy Shumen University115 Universitetska str.9700 ShumenBulgaria Via Zoncada 51 26845 Codogno(LO)Italy Via Molinetto 35 26845 Triulza di Codogno(LO)Italy

We present the first photometric analysis of three totally-eclipsing W UMa binaries,NS VS2443858,NSVS 780649 and V1098 *** absolute astrophysical parameters of the stellar components were determined by means of Gaia distances and light curve *** results show that:(ⅰ)Two of the systems,NSVS 2443858 and V1098 Her,are of A subtype while the obtained temperature of the secondary component of NSVS 780649 indicates that it is a W-subtype system;(ⅱ)The estimated mass ratios approach the lower limit of the mass ratio assumed by researchers in recent years so our targets could be classified as extreme mass ratio binary(EMRB)systems;(ⅲ)All the systems have deep contact configurations,so they also are deep low mass ratio(DLMR)systems;(ⅳ)The components of our systems are stars of f and G spectral type and undergo total eclipses;(ⅴ)The sum 0.871 M⊙of the component masses of NSVS 780649 is below the mass limit of 1.0-1.2 M⊙assumed for the known contact binary stars.

关键词： techinques:photometric binaries:eclipsing stars:fundamental parameters stars:individual

The KUR(conservation and restoration) project A comparison of different methods to preserve waterlogged wood

在线全文

学校读者我要写书评

暂无评论

江汉考古 2014年第S1期 14-25页

作者： waldemar Muskalla Markus Wittkopper Stephan Brather Romisch Germanisches Zentralmuseum Mainz Brandenburgisches Landesamt für Denkmalpflege und Archaologisches Landesmuseum

本德国慕尼黑国家考古陈列馆、美因兹日尔曼博物馆、瑞士国家博物馆、美国德克萨斯农工大学考古与保护研究中心等文物保护机构参与了项目"The KUR(conservation and restoration)p roject"的研究,在2008-2011年期间对采用不同保护方法... 详细信息

本德国慕尼黑国家考古陈列馆、美因兹日尔曼博物馆、瑞士国家博物馆、美国德克萨斯农工大学考古与保护研究中心等文物保护机构参与了项目"The KUR(conservation and restoration)p roject"的研究,在2008-2011年期间对采用不同保护方法处理的800多件样品进行了解剖特征、木质素、纤维素的分析,以此来评估木材的降解程度;通过三维扫描测量径向、弦向、顺纹方向的收缩率来评价保护效果;并基于理论计算,对不同保护方法进行了成本评估。所有的研究数据和结果可登录***/kur查阅。

关键词：出土竹木漆器保护研究述略