|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Quasisimilarity of Cowen-Douglas operators显示文摘This paper shows that every operator which is quasisimilar to strongly irreducible Cowen-Douglas operators is still strongly irreducible. This result answers a question posted by Davidson and Herrero (ref. [1]). | JIANG Chunlan & HE HuaDepartment of Mathematics, Hebei University of Technology, Tianjin 300130, China Department of Mathematics, Universtiy of Pueto Rico, Rio Piedras San Juan, PR 00931, USA Department of Mathematics, Hebei Normal University, Shijiazhuang 050016, China | 2004 | Science China Mathematics2004，47，2： | 11 |
| 2 | Prognostic factors and predictive model for in-hospital mortality following hip fractures in the elderly显示文摘 | J. Sanz-Reig J. Salvador Marin J. Ferrandez Martinez D. Orozco Beltran J.F. Martinez Lopez J.A. Quesada Rico | 2018 | Chinese Journal of Traumatology2018，21，3： | 11 |
| 3 | The first dinosaur tracksite from Xinjiang, NW China (Middle Jurassic Sanjianfang Formation, Turpan Basin)──a preliminary report显示文摘A new dinosaur tracksite was discovered in a steeply inclined sandstone layer of the Middle Jurassic Sanjianfang Formation in the Shanshan area of the Turpan Basin. The site is the first record of dinosaur footprints from Xinjiang Province in northwestern China. More than 150 tridactyl theropod dinosaur footprints are preserved as positive hyporeliefs on the lower bedding plane of a fine-grained sandstone body. Most of the footprints are isolated and appear to be randomly distributed. Some show well defined phalangeal pads, heels and rarely indistinct impressions of the distal part of the metatarsus. Two distinct morphotypes are present: a larger type with relatively broad pads shows similarities to Changpeipus and Megalosauripus, and a slightly smaller, slender and gracile type which is similar to Grallator, Eubrontes and Anchisauripus. In both morphotypes, digit III is the longest with a length between 11.4 and 33.6 cm. A single imprint shows prominent scratches, probably formed during slipping of the track maker. | Oliver WINCS Rico SCHELLHORN Heinrich MALLISON Ben THUY Wenhao WU Ge SUN | 2007 | Global Geology2007，10，2： | 8 |
| 4 | Relationship between MODIS-NDVI data and wheat yield: A case study in Northern Buenos Aires province, Argentina显示文摘In countries like Argentina,whose economy depends heavily on crop production,the estimation of harvests is an elementary requirement.Besides providing objectivity,the use of remote sensing allows estimating yield in advance.Since the time of maximum leaf area in wheat corresponds with the critical period of the crop,a good relationship is expected between the Normalized Difference Vegetation Index(NDVI)and yield.The present study was carried out in the North of Buenos Aires province,Argentina.Based on the type of soil,the study area can be divided into two homogeneous subzones:a subzone with lower clay content in the southwestand a subzone with higher clay content in the northeast.Nine growing seasons(2003–2011)were studied.In the first five years,an empirical model was calibrated and validated with field-observed wheat yields and MOD13q1 product-NDVI data,whereas in the other four years,the calibrated model was applied by means of yield maps and by comparing with official yields.The MOD13q1 image corresponding to Julian day 289 showed the best fit between NDVI and yield to estimate wheat yield early.Through yield maps,better weather conditions showedhigher yields and higher soil productivity presented a greater proportion of the area occupied by higher yields.At department level,an R2 value of 0.75 was found after relating the estimation of the calibrated empirical model with official yields.The method used allows predicting wheat yield 30 days before harvest.Through yield maps,the NDVI perceived the temporal and spatial variability in the study area. | Mariano F.Lopresti Carlos M.Di Bella Américo J.Degioanni | 2015 | Information Processing in Agriculture2015，2，2： | 8 |
| 5 | Primary malignant melanoma of the esophagus:A case report显示文摘The authors present the clinical case of an 87-year-old Caucasian male admitted to the emergency room with hematemesis. He had a history of intermittent dys-phagia during the previous month. Endoscopic evaluation revealed an eccentric,soft esophageal lesionlocated 25-35 cm from the incisors,which appeared asa protrusion of the esophagus wall,with active bleeding. Biopsies were acquired. Tissue evaluation wascompatible with a melanoma. After excluding other sites of primary neoplasm,the definitive diagnosis of Primary Malignant Melanoma of the Esophagus(PMME) was made. The patient developed a hospital-acquired respiratory infection and died before tumor-directed treatment could begin. Primary malignant melanoma represents only 0.1% to 0.2% of all esophageal ma-lignant tumors. Risk factors for PMME are not defined.A higher incidence of PMME has been described in Japan. Dysphagia,predominantly for solids,is the most frequent symptom at presentation. Retrosternal orepigastric discom fort or pain,melena or hemate mesishave also been described. The characteristic endoscopic finding of PMME is as a polypoid lesion,with variablesize,usually pigmented. The neoplasm occurs in thelower two-thirds of the esophagus in 86% of cases.PMME metastasizes via hematogenic and lymphatic pathways. At diagnosis,50% of the patients present with distant metastases to the liver,the mediastinum,the lungs and the brain. When possible,surgery(curative or palliative) ,is the preferential method of treatment. There are some reports in the literature where chemotherapy,chemohormon otherapy,radiotherapy and immunotherapy,with or without surgery,wereused with variable efficacy. The prognosis is poor;themean survival after surgery is less than 15 mo. | Joana Machado Paula Ministro Ricardo Araújo Eugénia Cancela António Castanheira Américo Silva | 2011 | World Journal of Gastroenterology2011，17，42： | 6 |
| 6 | Adult-to-adult living-donor liver transplantation: The experience of the Université catholique de Louvain显示文摘Background: Liver transplantation is the treatment for end-stage liver diseases and well-selected malignancies. The allograft shortage may be alleviated with living donation. The initial UCLouvain experience of adult living-donor liver transplantation(LDLT) is presented. Methods: A retrospective analysis of 64 adult-to-adult LDLTs performed at our institution between 1998 and 2016 was conducted. The median age of 29(45.3%) females and 35(54.7%) males was 50.2 years(interquartile range, IQR 32.9–57.5). Twenty-two(34.4%) recipients had no portal hypertension. Three(4.7%) patients had a benign and 33(51.6%) a malignant tumor [19(29.7%) hepatocellular cancer, 11(17.2%) secondary cancer and one(1.6%) each hemangioendothelioma, hepatoblastoma and embryonal liver sarcoma]. Median donor and recipient follow-ups were 93 months(IQR 41–159) and 39 months(22–91), respectively. Results: Right and left hemi-livers were implanted in 39(60.9%) and 25(39.1%) cases, respectively. Median weights of right-and left-liver were 810 g(IQR 730–940) and 454 g(IQR 394–534), respectively. Graft-to-recipient weight ratios(GRWRs) were 1.17%(right, IQR 0.98%-1.4%) and 0.77%(left, 0.59%-0.95%). One-and five-year patient survivals were 85% and 71%(right) vs. 84% and 58%(left), respectively. Oneand five-year graft survivals were 74% and 61%(right) vs. 76% and 53%(left), respectively. The patient and graft survival of right and left grafts and of very small( < 0.6%), small(0.6%–0.79%) and large( ≥0.8%) GRWR were similar. Survival of very small grafts was 86% and 86% at 3-and 12-month. No donor died while five(7.8%) developed a Clavien–Dindo complication IIIa, IIIb or IV. Recipient morbidity consisted mainly of biliary and vascular complications; three(4.7%) recipients developed a small-for-size syndrome according to the Kyushu criteria. Conclusions: Adult-to-adult LDLT is a demanding procedure that widens therapeutic possibilities of many hepatobiliary diseases. The donor procedure can be done safely with low morbidity. The recipient operation carries a major morbidity indicating an important learning curve. Shifting the risk from the donor to the recipient, by moving from the larger right-liver to the smaller left-liver grafts, should be further explored as this policy makes donor hepatectomy safer and may stimulate the development of transplant oncology. | Samuele Iesari Milton Eduardo Inostroza Nú?ez Juan Manuel Rico Juri Olga Ciccarelli Eliano Bonaccorsi-Riani Laurent Coubeau Pierre-Fran?ois Laterre Pierre Goffette Chantal De Reyck Beno?t Lengelé Pierre Gianello Jan Lerut | 2019 | Hepatobiliary & Pancreatic Diseases International2019，18，2： | 5 |
| 7 | Brain metastasis in advanced colorectal cancer: results from the South Australian metastatic colorectal cancer (SAmCRC) registry显示文摘Objective:Brain metastasis is considered rare in metastatic colorectal cancer(mCRC);thus,surveillance imaging does not routinely include the brain.The reported incidence of brain metastases ranges from 0.6% to 3.2%.Methods:The South Australian mCRC Registry(SAmCRC)was analyzed to assess the number of patients presenting with brain metastasis during their lifetime.Due to small numbers,a descriptive analysis is presented.Results:Only 59 patients of 4,100 on the registry at the time of analysis had developed brain metastasis(1.4%).The clinical characteristics of those with brain metastasis were as follows:the median age was 65.3 years and 51% were female.Where the V-Ki-ras2 Kirsten rat sarcoma viral oncogene homolog(KRAS)mutation status of the tumor was known,the majority harbored a KRAS mutation(55%);31(53%)underwent craniotomy and 55(93%)underwent whole-brain radiotherapy.The median survival time from diagnosis of brain metastasis was 4.2 months(95% confidence interval 2.9–5.5).Patients who underwent craniotomy and radiotherapy had superior survival compared to those who underwent whole-brain radiotherapy(8.5 months vs.2.2 months,respectively).Data from the SAmCRC(a population-based registry)confirm that brain metastases are rare and the median time to development is approximately 2 years.Conclusions:Brain metastasis is a rare outcome in advanced CRC.Patients within the registry tended to be female,young in age,and harbored with higher rates of KRAS mutations.Whether routine surveillance brain scanning should be considered remains controversial given the relative rarity of developing brain metastases in mCRC and ultimately,most patients with central nervous system involvement die from their extracranial disease. | Gonzalo Tapia Rico Timothy J. Price Christos Karapetis Cynthia Piantadosi Rob Padbury Amitesh Roy Guy Maddern James Moore Scott Carruthers David Roder Amanda R. Townsend | 2017 | Cancer Biology & Medicine2017，14，4： | 3 |
| 8 | Coordination corrected ab initio formation enthalpies显示文摘The correct calculation of formation enthalpy is one of the enablers of ab-initio computational materials design.For several classes of systems(e.g.oxides)standard density functional theory produces incorrect values.Here we propose the“coordination corrected enthalpies”method(CCE),based on the number of nearest neighbor cation–anion bonds,and also capable of correcting relative stability of polymorphs.CCE uses calculations employing the Perdew,Burke and Ernzerhof(PBE),local density approximation(LDA)and strongly constrained and appropriately normed(SCAN)exchange correlation functionals,in conjunction with a quasiharmonic Debye model to treat zero-point vibrational and thermal effects.The benchmark,performed on binary and ternary oxides(halides),shows very accurate room temperature results for all functionals,with the smallest mean absolute error of 27(24)meV/atom obtained with SCAN.The zero-point vibrational and thermal contributions to the formation enthalpies are small and with different signs—largely canceling each other. | Rico Friedrich Demet Usanmaz Corey Oses Andrew Supka Marco Fornari Marco Buongiorno Nardelli Cormac Toher Stefano Curtarolo | 2019 | npj Computational Materials2019，，1： | 3 |
| 9 | Outcomes of critically ill cancer patients with Acinetobacter baumannii infection显示文摘AIM: To describe the intensive care unit(ICU) outcomes of critically ill cancer patients with Acinetobacter baumannii(AB) infection.METHODS: This was an observational study that included 23 consecutive cancer patients who acquired AB infections during their stay at ICU of the National Cancer Institute of Mexico(INCan), located in Mexico City. Data collection took place between January 2011, and December 2012. Patients who had AB infections before ICU admission, and infections that occurred during the first 2 d of ICU stay were excluded. Data were obtained by reviewing the electronic health record of each patient. This investigation was approved by the Scientific and Ethics Committees at INCan. Because of its observational nature, informed consent of the patients was not required.RESULTS: Throughout the study period, a total of 494 critically ill patients with cancer were admitted to the ICU of the INCan, 23(4.6%) of whom developed AB infections. Sixteen(60.9%) of these patients had hematologic malignancies. Most frequent reasons for ICU admission were severe sepsis or septic shock(56.2%) and postoperative care(21.7%). The respiratory tract was the most frequent site of AB infection(91.3%). The most common organ dysfunction observed in our group of patients were the respiratory(100%), cardiovascular(100%), hepatic(73.9%) and renal dysfunction(65.2%). The ICU mortality of patients with 3 or less organ system dysfunctions was 11.7%(2/17) compared with 66.6%(4/6) for the group of patients with 4 or more organ system dysfunctions(P = 0.021). Multivariate analysis identified blood lactate levels(BLL) as the only variable independently associated with inICU death(OR = 2.59, 95%CI: 1.04-6.43, P = 0.040). ICU and hospital mortality rates were 26.1% and 43.5%, respectively.CONCLUSION: The mortality rate in critically ill patients with both HM, and AB infections who are admitted to the ICU is high. The variable most associated with increased mortality was a BLL ≥ 2.6 mmol/L in the first day of stay in the ICU. | Silvio A ?amendys-Silva Paulina Correa-García Francisco J García-Guillén María O González-Herrera Américo Pérez-Alonso Julia Texcocano-Becerra Angel Herrera-Gómez Patricia Cornejo-Juárez Abelardo Meneses-García | 2015 | World Journal of Critical Care Medicine2015，4，3： | 3 |
| 10 | To supervise or to self‑supervise:a machine learning based comparison on credit supervision显示文摘This study investigates the need for credit supervision as conducted by on-site banking supervisors.It builds on a real bank on-site credit examination to compare the performance of a hypothetical self-supervision approach,in which banks themselves assess their loan portfolios without external intervention,with the on-site banking supervision approach of the Central Bank of Brazil.The experiment develops two machine learning classification models:the first model is based on good and bad ratings informed by banks,and the second model is based on past on-site credit portfolio examinations conducted by banking supervision.The findings show that the overall performance of the on-site supervision approach is consistently higher than the performance of the self-supervision approach,justifying the need for on-site credit portfolio examination as conducted by the Central Bank. | JoséAmérico Pereira Antunes | 2021 | Financial Innovation2021，7，1： | 3 |
| 11 | Sex-specific effects of Eugenia punicifolia extract on gastric ulcer healing in rats显示文摘AIM To evaluate the sex-specific effects of a hydroalcoholic extract from Eugenia punicifolia(HEEP) leaves on gastric ulcer healing.METHODS In this rat study involving males, intact(cycling) females, and ovariectomized females, gastric ulcers were induced using acetic acid. A vehicle, lansoprazole, or HEEP was administered for 14 d after ulcer induction. Body weight was monitored throughout the treatment period. At the end of treatment, the rats were euthanized and the following in vivo and in vitro investigations were performed: macroscopic examination of the lesion area and organ weights, biochemical analysis, zymography, and evaluation of protein expression levels. Additionally, the concentration-dependent effect of HEEP was evaluated in terms of subacute toxicity and cytotoxicity.RESULTS Compared to the vehicle, HEEP demonstrated a great healing capacity by substantially reducing the ulcerative lesion area in males(52.44%), intact females(85.22%), and ovariectomized females(65.47%), confirming that HEEP accelerates the healing of acetic acidinduced gastric lesions and suggesting that this effect is modulated by female sex hormones. The antiulcer effect of HEEP was mediated by prostaglandin E2 only in male rats. Overall, the beneficial effect of HEEP was the highest in intact females. Notably, HEEP promoted the expression of vascular endothelial growth factor(intact vs ovariectomized females) and decreased the expression of Caspase-8 and Bcl-2(intact female vs male or ovariectomized female). Additionally, HEEP enhanced fibroblast proliferation and migration into a wounded area in vitro, confirming its healing effect. Finally, no sign of subacute toxicity or cytotoxicity of HEEP was observed.CONCLUSION In gastric ulcers, HEEP-induced healing(modulated by female sex hormones; in males, mediated by prostaglandin) involves extracellular matrix remodeling, with gastric mucosa cell proliferation and migration. | Larissa Lucena Périco Vinícius Peixoto Rodrigues Rie Ohara Gabriela Bueno Vania Vasti Alfieri Nunes Raquel Cássia dos Santos Ana Carolina Lima Camargo Luis Antuio Justulin Joior Sérgio Faloni de Andrade Viviane Miranda Bispo Steimbach Luísa Mota da Silva Lúcia Regina Machado da Rocha Wagner Vilegas Catarina dos Santos Clélia Akiko Hiruma-Lima | 2018 | World Journal of Gastroenterology2018，24，38： | 3 |
| 12 | Effect of process parameters on additive-free electrospinning of regenerated silk fibroin nonwovens显示文摘Silk fibroin is a biomaterial with multiple beneficial properties for use in regenerative medicine and tissue engineering.When dissolving and processing the reconstituted silk fibroin solution by electrospinning,the arrangement and size of fibers can be manifold varied and according fiber diameters reduced to the nanometer range.Such nonwovens show high porosity as well as potential biocompatibility.Usually,electrospinning of most biomaterials demands for the application of additives,which enable stable electrospinning by adjusting viscosity,and are intended to evaporate during processing or to be washed out afterwards.However,the use of such additives increases costs and has to be taken into account in terms of biological risks when used for biomedical applications.In this study,we explored the possibilities of additive-free electrospinning of pure fibroin nonwovens and tried to optimize process parameters to enable stable processing.We used natural silk derived from the mulberry silkworm Bombyx mori.After degumming,the silk fibroin was dissolved and the viscosity of the spinning solution was controlled by partial evaporation of the initial solving agent.This way,we were able to completely avoid the use of additives and manufacture nonwovens,which potentially offer higher biocompatibility and reduced immunogenicity.Temperature and relative humidity during electrospinning were systematically varied(25–35°C,25–30%RH).In a second step,the nonwovens optionally underwent methanol treatment to initiate beta-sheet formation in order to increase structural integrity and strength.Comprehensive surface analysis on the different nonwovens was performed using scanning electron microscopy and supplemented by additional mechanical testing.Cytotoxicity was evaluated using BrdU-assay,XTT-assay,LDH-assay and live-dead staining.Our findings were,that an increase of temperature and relative humidity led to unequal fiber diameters and defective nonwovens.Resistance to penetration decreased accordingly.The most uniform fiber diameters of 998±63 nm were obtained at 30°C and 25%relative humidity,also showing the highest value for resistance to penetration(0.20 N).The according pure fibroin nonwoven also showed no signs of cytotoxicity.However,while the biological response showed statistical evidence,the material characteristics showed no statistically significant correlation to changes of the ambient conditions within the investigated ranges.We suggest that further experiments should explore additional ranges for temperature and humidity and further focus on the repeatability of material properties in dependency of suitable process windows. | Alexander Kopp Ralf Smeets Martin Gosau Nadja Kröger Sandra Fuest Marius Köpf Magnus Kruse Judith Krieger Rico Rutkowski Anders Henningsen Simon Burg | 2020 | Bioactive Materials2020，5，2： | 3 |
| 13 | β -Hydoxy- β -methylbutyrate supplementation affects Walker 256 tumor-bearing rats in a time-dependent manner显示文摘 | érico Chagas Caperuto Ronaldo Vagner Tomatieli Alison Colquhoun Marília Cerqueira Leite Seelaender Luis Fernando Bicudo Pereira Costa Rosa | 2006 | Clinical Nutrition2006，，1： | 2 |
| 14 | The Palaeoflood record of the Gardon River, France: A comparison with the extreme 2002 flood event显示文摘 | Nathan A. Sheffer Mayte Rico Yehouda Enzel Gerardo Benito Tamir Grodek | 2007 | Geomorphology2007，，1： | 2 |
| 15 | Reported tailings dam failures显示文摘 | M. Rico G. Benito A.R. Salgueiro A. Díez-Herrero H.G. Pereira | 2007 | Journal of Hazardous Materials2007，，2： | 2 |
| 16 | 调动公众参与管理的积极性显示文摘 | Rubén Américo Martí 朱岩 李富明 | 2000 | 技术经济与管理研究2000，，5： | 2 |
| 17 | The Palaeoflood record of the Gardon River, France: A comparison with the extreme 2002 flood event显示文摘 | Nathan A. Sheffer Mayte Rico Yehouda Enzel Gerardo Benito Tamir Grodek | 2007 | Geomorphology2007，，1： | 2 |
| 18 | GTAW焊接过程中熔池发展的数值模拟及与实验结果的比较显示文摘用描述等离子弧和熔池中的流体流动和传热过程的数学模型对熔池的发展进行了数值模拟。模拟结果和文献中实验结果的比较表明 ,该数学模型能较好地预测熔池的形状和大小。 | 杨雪峰 Aristeuda Silveira Neto Américo Scotti | 2002 | 四川大学学报(工程科学版)2002，34，6： | 2 |
| 19 | Early postoperative arterial oxygen desaturation显示文摘 | Canet J Ricos M Vidal F | 1989 | Anesth Analg1989，69，2： | 1 |
| 20 | Current databases on biological variation: pros, cons and progress 显示文摘 | Ricos C Alvarez V Cava F | 1999 | Scand J Clin Lab Invest1999，59，： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员