|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | 用值来综合评估燃煤锅炉排放烟气污染程度的可行性显示文摘目的用一个参数值来评估一个大型燃煤锅炉所排放烟气中温度和化学物(SO2、NO、CO2)各自和综合污染分布特性,简化实际污染评估手段.方法通过数学模拟的方法建立大型锅炉烟气排放分析模型、建立排放烟气的温度分布、质量浓度分布、分布数学模型,并把所得的3种分布结果及特性进行比较.结果给出锅炉烟气排放分析模型中烟气的温度污染和主要排放物CO2,SO2,NO2的化学污染的火用值在排放高度、离地10m高度、和地面上沿风向分布的轴向模拟分析曲线、烟气的温度和主要排放物的浓度的分布曲线;找出烟气在3个不同高度污染的特点、污染的最严重地点,检查总污染的火用指标与各污染物单独评价指标的异同.结论得出仅用参数值作为污染评估值来评估排放烟气污染是完全可行的,而且充分显示了一个能联系不同自然学科,并在不同学科中自由转换的参数值火用作为污染评估标准的优越性.即可以把不同污染物的污染特性综合起来,集复杂的多种评估参数为一体,简化评估手段和方法,易于找到多种污染的最不利点. | 敖永安 Marc A Rosen | 2005 | 沈阳建筑大学学报(自然科学版)2005，21，3： | 9 |
| 2 | Plasmonics for solid-state lighting: enhanced excitation and directional emission of highly efficient light sources显示文摘Light sources based on reliable and energy-efficient light-emitting diodes (LEDs) are instrumental in the development of solid-statelighting (SSL). Most research efforts in SSL have focused on improving both the intrinsic quantum efficiency (QE) and the stability oflight emitters. For this reason, it is broadly accepted that with the advent of highly efficient (QE close to 1) and stable emitters, thefundamental research phase of SSL is coming to an end. In this study, we demonstrate a very large improvement in SSL emission (above70-fold directional enhancement for p-polarized emission and 60-fold enhancement for unpolarized emission) using nanophotonicstructures. This is attained by coupling emitters with very high QE to collective plasmonic resonances in periodic arrays of aluminumnanoantennas. Our results open a new path for fundamental and applied research in SSL in which plasmonic nanostructures are able tomold the spectral and angular distribution of the emission with unprecedented precision. | Gabriel Lozano Davy J Louwers Said RK Rodrı´guez Shunsuke Murai Olaf TA Jansen Marc A Verschuuren Jaime Gomez Rivas | 2013 | Light(Science & Applications)2013，2，1： | 8 |
| 3 | Perioperative challenges in management of diabetic patients undergoing non-cardiac surgery显示文摘Prediabetes and diabetes are important disease processes which have several perioperative implications.About one third of the United States population is considered to have prediabetes.The prevalence in surgical patients is even higher.This is due to the associated micro and macrovascular complications of diabetes that result in the need for subsequent surgical procedures.A careful preoperative evaluation of diabetic patients and patients at risk for prediabetes is essential to reduce perioperative mortality and morbidity.This preoperative evaluation involves an optimization of preoperative comorbidities.It also includes optimization of antidiabetic medication regimens,as the avoidance of unintentional hypoglycemic and hyperglycemic episodes during the perioperative period is crucial.The focus of the perioperative management is to ensure euglycemia and thus improve postoperative outcomes.Therefore,prolonged preoperative fasting should be avoided and close monitoring of blood glucose should be initiated and continued throughout surgery.This can be accomplished with either analysis in blood gas samples,venous phlebotomy or point-of-care testing.Although capillary and arterial whole blood glucose do not meet standard guidelines for glucose testing,they can still be used to guide insulin dosing in the operating room.Intraoperative glycemic control goals may vary slightly in different protocols but overall the guidelines suggest a glucose range in the operating room should be between 140 mg/dL to 180 mg/dL.When hyperglycemia is detected in the operating room,blood glucose management may be initiated with subcutaneous rapid-acting insulin,with intravenous infusion or boluses of regular insulin.Fluid and electrolyte management are other perioperative challenges.Notably diabetic ketoacidosis and hyperglycemic hyperosmolar nonketotic state are the two most serious acute metabolic complications of diabetes that must be recognized early and treated. | Ursula Galway Praveen Chahar Marc T Schmidt Jorge A Araujo-Duran Jeevan Shivakumar Alparslan Turan Kurt Ruetzler | 2021 | World Journal of Diabetes2021，12，8： | 5 |
| 4 | Management of syndesmotic injuries:What is the evidence?显示文摘Ankle fractures are accompanied by a syndesmotic injury in about 10% of operatively treated ankle fractures. Usually, the total rupture of the syndesmotic ligaments with an external rotation force is associated with a Weber type B or C fracture or a Maisonneuve fracture. The clinical assessment should consist of a comprehensive history including mechanism of injury followed by a specific physical examination. Radiographs, and if in doubt magnetic resonance imaging, are needed to ascertain the syndesmotic injury. In the case of operative treatment the method of fixation, the height and number of screws and the need for hardware removal are still under discussion. Furthermore, intraoperative assessment of the accuracy of reduction of the fibula in the incisura using fluoroscopy is difficult. A possible solution might be the assessment with intraoperative three-dimensional imaging. The aim of this article is to provide a current concepts review of the clinical presentation, diagnosis and treatment of syndesmotic injuries. | Marc Schnetzke Sven Y Vetter Nils Beisemann Benedict Swartman Paul A Grützner Jochen Franke | 2016 | World Journal of Orthopedics2016，7，11： | 4 |
| 5 | Mobilization of hematopoietic progenitor cells in patients with liver cirrhosis显示文摘AIM:To test the hypothesis that liver cirrhosis is associated with mobilization of hematopoietic progenitor cells. METHODS:Peripheral blood samples from 72 patients with liver cirrhosis of varying etiology were analyzed by flow cytometry.Identified progenitor cell subsets were immunoselected and used for functional assays in vitro. Plasma levels of stromal cell-derived factor-1(SDF-1) were measured using an enzyme linked immunosorbent assay.RESULTS:Progenitor cells with a CD133 + /CD45 + CD14 + phenotype were observed in 61%of th patients.Between 1%and 26%of the peripheral bloo mononuclear cells(MNCs)displayed this phenotype Furthermore,a distinct population of c-kit + progenito cells(between 1%and 38%of the MNCs)could b detected in 91%of the patients.Additionally,18% of the patients showed a population of progenito cells(between 1%and 68%of the MNCs)that wa characterized by expression of breast cancer resistanc protein-1.Further phenotypic analysis disclosed tha the circulating precursors expressed CXC chemokin receptor 4,the receptor for SDF-1.In line with thi finding,elevated plasma levels of SDF-1 were presen in all patients and were found to correlate with th number of mobilized CD133 + progenitor cells. | Ursula M Gehling Marc Willems Kathleen Schlagner Ralf A Benndorf Maura Dandri Jrg Petersen Martina Sterneck Joerg-Matthias Pollok Dieter K Hossfeld Xavier Rogiers | 2010 | World Journal of Gastroenterology2010，16，2： | 4 |
| 6 | Outcome in obscure gastrointestinal bleeding after capsule endoscopy显示文摘AIM: To investigate the clinical impact of capsule endoscopy(CE) after an obscure gastrointestinal bleeding(OGIB) episode, focusing on diagnostic work-up, followup and predictive factors of rebleeding. METHODS: Patients who were referred to Hospital del Mar(Barcelona, Spain) between 2007 and 2009 for OGIB who underwent a CE were retrospectively analyzed. Demographic data, current treatment with non-steroid antiinflammtory drugs or anticoagulant drugs, hemoglobin levels, transfusion requirements, previous diagnostic tests for the bleeding episode, as well as CE findings(significant or non-significant), work-up and patient out-comes were analyzed from electronic charts. Variables were compared by χ 2 analysis and Student t test. Risk factors of rebleeding were assessed by Log-rank test, Kaplan-Meier curves and Cox regression model. RESULTS: There were 105 patients [45.7% women, median age of 72 years old(interquartile range 56-79)] and a median follow-up of 326 d(interquartile range 123-641) included in this study. The overall diagnostic yield of CE was 58.1%(55.2% and 63.2%, for patients with occult OGIB and overt OGIB, respectively). In 73 patients(69.5%), OGIB was resolved. Multivariate analysis showed that hemoglobin levels lower than 8 g/dL at diagnosis [hazard ratios(HR) = 2.7, 95%CI: 1.9-6.3], patients aged 70 years and above(HR = 2.1, 95%CI: 1.2-6.1) and significant findings in CE(HR = 2.4, 95%CI: 1.1-5.8) were independent predictors of rebleeding. CONCLUSION: One third of the patients presented with rebleeding after CE; risk factors were hemoglobin levels < 8 g/dL, age ≥ 70 years or the presence of significant lesions. | Alex Caas-Ventura Lucia Márque Xavier Bessa Josep Maria DedeuDepartment of Gastroenterology Hospital del Mar Research Institute Pompeu Fabra University Marc Puigvehí Sílvia Delgado-Aros Ines Ana Ibáez Agustin Seoane Luis Barranco Felipe Bory Montserrat Andreu Begoa González-Suárez | 2013 | World Journal of Gastrointestinal Endoscopy2013，5，11： | 4 |
| 7 | Acute effects of rotavirus and malnutrition on intestinal barrier function in neonatal piglets显示文摘AIM: To investigate the effect of protein-energy malnutrition on intestinal barrier function during rotavirus enteritis in a piglet model.METHODS: Newborn piglets were allotted at day 4 of age to the following treatments:(1) full-strength formula(FSF)/noninfected;(2) FSF/rotavirus infected;(3) half-strength formula(HSF)/noninfected;or(4) HSF/rotavirus infected.After one day of adjustment to the feeding rates,pigs were infected with rotavirus and acute effects on growth and diarrhea were monitored for 3 d and jejunal samples were collected for Ussingchamber analyses.RESULTS: Piglets that were malnourished or infected had lower body weights on days 2 and 3 post-infection(P < 0.05).Three days post-infection,marked diarrhea and weight loss were accompanied by sharp reductions in villus height(59%) and lactase activity(91%) and increased crypt depth(21%) in infected compared with non-infected pigs(P < 0.05).Malnutrition also increased crypt depth(21%) compared to full-fed piglets.Villus:crypt ratio was reduced(67%) with viral infection.There was a trend for reduction in transepithelial electrical resistance with rotavirus infection and malnutrition(P = 0.1).3H-mannitol flux was significantly increased(50%;P < 0.001) in rotavirus-infected piglets compared to non-infected piglets,but there was no effect of nutritional status.Furthermore,rotavirus infection reduced localization of the tight junction protein,occludin,in the cell membrane and increased localization in the cytosol.CONCLUSION: Overall,malnutrition had no additive effects to rotavirus infection on intestinal barrier function at day 3 post-infection in a neonatal piglet model. | Sheila K Jacobi Adam J Moeser Anthony T Blikslager J Marc Rhoads Benjamin A Corl Robert J Harrell Jack Odle | 2013 | World Journal of Gastroenterology2013，19，31： | 4 |
| 8 | When is a varicocele repair indicated: the dilemma of hypogonadism and erectile dysfunction?显示文摘在过去,为 varicocelectomy 的指示主要为有反常精液参数,在青少年的阴囊的 hypotrophy/atrophy,或疼痛的不孕。为性腺机能减退的精索静脉曲张的外科的处理争论、辩论。最近,在文学的多重报告建议了那精索静脉曲张与性腺机能减退被联系,精索静脉曲张修理能增加睾丸激素层次。有 hypogonadal 症状的人应该有至少二个浆液睾丸激素层次。Microsurgical varicocelectomy 可能为有有记录性腺机能减退的临床上摸得出的精索静脉曲张的人是有益的。在这评论,我们总结在浆液睾丸激素层次上连接精索静脉曲张到性腺机能减退和性机能障碍和修理的影响的最近的文学。我们执行了出版英语文学的搜索。使用的关键词是 “精索静脉曲张和 hypogonadism”并且 “精索静脉曲张外科和睾丸激素 .”我们在 1998 以后包括了出版研究。也,我们为精索静脉曲张修理不管指示在浆液睾丸激素水平在变化上评估了外科的效果。 | Ali A Dabaja Marc Goldstein | 2016 | Asian Journal of Andrology2016，18，2： | 3 |
| 9 | Cachexia and pancreatic cancer: Are there treatment options?显示文摘Cachexia is frequently described in patients with pancreatic ductal adenocarcinoma(PDAC)and is associated with reduced survival and quality of life.Unfortunately,the therapeutic options of this multi-factorial and complex syndrome are limited.This is due to the fact that,despite extensive preclinical and clinical research,the underlying pathological mechanisms leading to PDAC-associated cachexia are still not fully understood.Furthermore,there is still a lack of consensus on the definition of cachexia,which complicates the standardization of diagnosis and treatment as well as the analysis of the current literature.In order to provide an efficient therapy for cachexia,an early and reliable diagnosis and consistent monitoring is required,which can be challenging especially in obese patients.Although many substances have been tested in clinical and preclinical settings,so far none of them have been proven to have a long-term effect in ameliorating cancer-associated cachexia.However,recent studies have demonstrated that multidimensional therapeutic modalities are able to alleviate pancreatic cancerassociated cachexia and ultimately improve patients’outcome.In this current review,we propose a stepwise and pragmatic approach to facilitate and standardize the treatment of cachexia in pancreatic cancer patients.This strategy consists of nutritional,dietary,pharmacological,physical and psychological methods. | Tara C Mueller Marc A Burmeister Jeannine Bachmann Marc E Martignoni | 2014 | World Journal of Gastroenterology2014，20，28： | 3 |
| 10 | Structure of the Ca2+-dependent PP2A heterotrimer and insights into Cdc6 dephosphorylation显示文摘B″蛋白质磷酸酶 2A (PP2A ) 的 /PR72 家庭一个重要 PP2A 家庭涉及多样的细胞的过程,并且特别地由钙绑定调整了到规章的子单元。在这个家庭的 PR70 子单元与房间部门控制 6 交往(Cdc6 ) ,为 DNA 复制的控制重要的一个房间周期管理者。这里,我们在 2.1 和 2.4 Å 的一个决定报导孤立的 PR72 和 trimeric PR70 holoenzyme 的水晶结构;,分别地并且在 Cdc6 dephosphorylation 的 vitro 描述。holoenzyme 结构表明 PR70 钙绑定主题之一直接联系支架子单元,导致在所有 PP2A holoenzymes 之中的最紧缩的支架子单元符合构造。PR70 也在活跃地点附近区别地绑在催化子单元,它被要求让 PR70 向 Cdc6 提高磷酸酶活动。我们的研究为 B″ 的唯一的规定提供一个结构的基础;由钙离子的 /PR72 holoenzymes,并且在 PP2A holoenzymes 之中为底层特性的精确控制建议机制。 | Nathan Wlodarchak Feng Guo Kenneth A Satyshur Li Jiang Philip D Jeffrey Tingwan Sun Vitali Stanevich Marc C Mumby Yongna Xing | 2013 | Cell Research2013，23，7： | 3 |
| 11 | Diagnostic value of drain amylase for detecting intrathoracic leakage after esophagectomy显示文摘AIM:To investigate the value of elevated drain amylase concentrations for detecting anastomotic leakage(AL) after minimally invasive Ivor-Lewis esophagectomy(MIILE).METHODS:This was a retrospective analysis of prospectively collected data in two hospitals in the Netherlands. Consecutive patients undergoing MI-ILE were included. A Jackson-Pratt drain next to the dorsal side of the anastomosis and bilateral chest drains were placed at the end of the thoracoscopic procedure. Amylase levels in drain fluid were determined in all patients during at least the first four postoperative days. Contrast computed tomography scans and/or endoscopic imaging were performed in cases of a clinically suspected AL. Anastomotic leakage was defined as any sign of leakage of the esophago-gastric anastomosis on endoscopy,re-operation,radiographic investigations,post mortal examination or when gastro-intestinal contents were found in drain fluid. Receiver operator characteristic curves were used to determine the cut-off values. Sensitivity,specificity,positive predictive value,negative predictive value,risk ratio and overall test accuracy were calculated for elevated drain amylase concentrations.RESULTS:A t o t a l o f 8 9 p a t ie n t s w e re in c lu d e d between March 2013 and August 2014. No differences in group characteristics were observed between patients with and without AL,except for age. Patients with AL were older than were patients without AL(P = 0.01). One patient(1.1%) without AL died within 30 d after surgery due to pneumonia and acute respiratory distress syndrome. Anastomotic leakage that required any intervention occurred in 15 patients(16.9%). Patients with proven anastomotic leakage had higher drain amylase levels than patients without anastomotic leakage [median 384 IU/L(IQR 34-6263) vs median 37 IU/L(IQR 26-66),P = 0.003]. Optimal cut-off values on postoperative days 1,2,and 3 were 350 IU/L,200 IU/L and 160 IU/L,respectively. An elevated amylase level was found in 9 of the 15 patients with AL. Five of these 9 patients had early elevations of their amylase levels,with a median of 2 d(IQR 2-5) before signs and symptoms occurred.CONCLUSION:Measurement of drain amylase levels is an inexpensive and easy tool that may be used to screen for anastomotic leakage soon after MI-ILE. However,clinical validation of this marker is necessary. | Gijs HK Berkelmans Ewout A Kouwenhoven Boudewijn JJ Smeets Teus J Weijs Luis C Silva Corten Marc J van Det Grard AP Nieuwenhuijzen Misha DP Luyer | 2015 | World Journal of Gastroenterology2015，21，30： | 3 |
| 12 | Microstructural analysis of pineal volume using trueFISP imaging显示文摘AIM:To determine the spectrum of pineal microstructures (solid/cystic parts) in a large clinical population using a high-resolution 3D-T2-weighted sequence. METHODS:A total of 347 patients enrolled for cranial magnetic resonance imaging were randomly included in this study. Written informed consent was obtained from all patients. The exclusion criteria were artifacts or mass lesions prohibiting evaluation of the pineal gland in any of the sequences. True-FISP-3D-imaging (1.5-T, isotropic voxel 0.9 mm) was performed in 347 adults (55.4 ± 18.1 years). Pineal gland volume (PGV), cystic volume, and parenchyma volume (cysts exclud- ed) were measured manually. RESULTS:Overall, 40.3% of pineal glands were cystic. The median PGV was 54.6 mm 3 (78.33 ± 89.0 mm 3 ), the median cystic volume was 5.4 mm 3 (15.8 ± 37.2mm 3 ), and the median parenchyma volume was 53.6 mm 3 (71.9 ± 66.7 mm 3 ). In cystic glands, the standard deviation of the PGV was substantially higher than in solid glands (98% vs 58% of the mean). PGV declined with age (r = -0.130, P = 0.016). CONCLUSION:The high interindividual volume variation is mainly related to cysts. Pineal parenchyma volume decreased slightly with age, whereas genderrelated effects appear to be negligible. | Jan M Bumb Marc A Brockmann Christoph Groden Ingo Nolteb | 2013 | World Journal of Radiology2013，5，4： | 2 |
| 13 | Advances in Surgical Treatment of Atrial Fibrillation显示文摘 | A Marc Gillinov | | Stroke0，，： | 2 |
| 14 | Stroke显示文摘 | Geoffrey A Donnan Marc Fisher Malcolm Macleod Stephen M Davis | 2008 | The Lancet . 2008 (9624)2008，，9624： | 2 |
| 15 | Human cord blood-derived cells can differentiate into hepatocytes in the mouse liver with no evidence of cellular fusion显示文摘 | Philip N Newsome Ingolfur Johannessen Shelagh Boyle Evangelos Dalakas Karen A Mcaulay Kay Samuel Frances Rae Lesley Forrester Marc L Turner Peter C Hayes David J Harrison Wendy A Bickmore John N Plevris | 2003 | Gastroenterology2003，，7： | 2 |
| 16 | Stroke显示文摘 | Geoffrey A Donnan Marc Fisher Malcolm Macleod Stephen M Davis | 2008 | The Lancet2008，，9624： | 2 |
| 17 | Probiotics for childhood functional gastrointestinal disorders: a systematic review and meta‐analysis显示文摘 | Judith J Korterink Lize Ockeloen Marc A Benninga Merit M Tabbers Mirrian Hilbink Judith M Deckers‐Kocken | 2014 | Acta Paediatr2014，，4： | 2 |
| 18 | Laparoscopy-assisted versus open colectomy for treatment of colon cancer in the elderly: morbidity and mortality outcomes in 545 patients显示文摘 | Francesc Vallribera Valls Filippo Landi Eloy Espín Basany José Luis Sánchez García Luis Miguel Jiménez Gómez Marc Martí Gallostra Luis Salgado Cruz Manuel Armengol Carrasco | 2014 | Surgical Endoscopy2014，，12： | 2 |
| 19 | Concurrent use of aromatase inhibitors and hypofractionated radiation therapy显示文摘AIM: To retrospectively assess the acute and long-term toxicity using aromatase inhibitors (AI) therapy concurrently with hypofractionated radiotherapy (HFRT) in breast cancer patients. METHODS: From November 1999 to October 2007, 66 patients were treated with breast HFRT and concurrent AI. In 63 patients (95.5%), HFRT delivered a total dose of 32.5 Gy to the whole breast within 5 wk (five fractions, one fraction per week). Other fractionations were chosen in three patients for the patients' personal convenience. A subsequent boost to the tumor bed was delivered in 35 patients (53.0%). Acute toxicities were scored according to the Common Toxicity Criteria for Adverse Events v3. Late toxicity was defined as any toxicity occurring more than 6 mo after completion of HFRT and was scored according to the Late Effects Normal Tissue Task Force-Subjective, Objective, Management and Analytic scale. RESULTS: At the end of the HFRT course, 19 patients (28.8%) had no irradiation-related toxicity. Acute grade 1-2 epithelitis was observed in 46 patients (69.7%). One grade 3 toxicity (1.5%) was observed. With a median follow-up of 34 mo (range: 12-94 mo), 31 patients (47%) had no toxicity, and 35 patients (53%) presented with grade 1-2 fibrosis. No grade 3 or greater delayed toxicity was observed. CONCLUSION: We found that AI was well tolerated when given concurrently with HFRT. All toxicities were mild to moderate, and no treatment disruption was necessary. Further prospective assessment is warranted. | Cyrus Chargari Pablo Castro-Pena Ivan Toledano Marc A Bollet Alexia Savignoni Paul Cottu Fatima Laki Franois Campana Patricia De Cremoux Alain Fourquet Youlia M Kirova | 2012 | World Journal of Radiology2012，4，7： | 2 |
| 20 | Economic incentives for agricultural nonpoint source pollution control显示文摘 | Bruce A L Marc R | 1994 | Water Resources Bulletin1994，30，3： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员