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768篇 您的检索式:作者名="Kenneth L"
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1环境磁学某些研究进展评述显示文摘环境磁学是应用岩石磁学和矿物磁学技术去恢复环境过程、重塑环境演化历史的一门边缘科学。沉积环境中磁性矿物的形成、搬运、沉积和演化受气候变化和环境过程的控制 ,因此 ,岩石和矿物磁学性质可作为环境变化和气候过程的代用指标。环境磁学能为全球环境变化、气候过程研究提供有价值的资料。鉴于环境磁学方法在古环境和古气候研究中的重要作用 ,本文对当前黄土、湖泊沉积物和海洋沉积物环境磁学研究的一些进展作简要评述。邓成龙 袁宝印 胡守云 刘东生 Kenneth L Verosub 韩家懋 郭正堂 吕厚远 2000海洋地质与第四纪地质2000,20,2:41
2Management of hepatocellular carcinoma with portal vein tumor thrombosis: Review and update at 2016显示文摘Portal vein tumor thrombosis(PVTT) is a common phenomenon in hepatocellular carcinoma(HCC). Compared to HCC without PVTT, HCC with PVTT is characterized by an aggressive disease course, worse hepatic function, a higher chance of complications related to portal hypertension and poorer tolerance to treatment. Conventionally, HCC with PVTT is grouped together with metastatic HCC during the planning of its management, and most patients are offered palliative treatment with sorafenib or other systemic agents. As a result, most data on the management of HCC with PVTT comes from subgroup analyses or retrospective series. In the past few years, there have been several updates on management of HCC with PVTT. First, it is evident that HCC with PVTT consists of heterogeneous subgroups with different prognoses. Different classifications have been proposed to stage the degree of portal vein invasion/thrombosis, suggesting that different treatment modalities may be individualized to patients with different risks. Second, more studies indicate that more aggressive treatment, including surgical resection or locoregional treatment, may benefit select HCC patients with PVTT. In this review, we aim to discussthe recent conceptual changes and summarize the data on the management of HCC with PVTT.Stephen L Chan Charing CN Chong Anthony WH Chan Darren MC Poon Kenneth SH Chok 2016World Journal of Gastroenterology2016,22,32:44
3Management and prevention of acute and chronic lateral ankle instability in athletic patient populations显示文摘Acute and chronic lateral ankle instability are common in high-demand patient populations. If not managed appropriately, patients may experience recurrent instability, chronic pain, osteochondral lesions of the talus, premature osteoarthritis, and other significantlong-term disability. Certain populations, including young athletes, military personnel and those involved in frequent running, jumping, and cutting motions, are at increased risk. Proposed risk factors include prior ankle sprain, elevated body weight or body mass index, female gender, neuromuscular deficits, postural imbalance, foot/ankle malalignment, and exposure to at-risk athletic activity. Prompt, accurate diagnosis is crucial, and evidence-based, functional rehabilitation regimens have a proven track record in returning active patients to work and sport. When patients fail to improve with physical therapy and external bracing, multiple surgical techniques have been described with reliable results, including both anatomic and nonanatomic reconstructive methods. Anatomic repair of the lateral ligamentous complex remains the gold standard for recurrent ankle instability, and it effectively restores native ankle anatomy and joint kinematics while preserving physiologic ankle and subtalar motion. Further preventative measures may minimize the risk of ankle instability in athletic cohorts, including prophylactic bracing and combined neuromuscular and proprioceptive training programs. These interventions have demonstrated benefit in patients at heightened risk for lateral ankle sprain and allow active cohorts to return to full activity without adversely affecting athletic performance.Brendan J Mc Criskin Kenneth L Cameron Justin D Orr Brian R Waterman 2015World Journal of Orthopedics2015,6,2:20
4Colorectal cancer in patients under 50 years of age:A retrospective analysis of two institutions' experience显示文摘AIM:To investigate the epidemiological characteristics of colorectal cancer(CRC)in patients under 50 years of age across two institutions.METHODS:Records of patients under age 50 years of age who had CRC surgery over a 16 year period were assessed at two institutions.The following documents where reviewed:admission notes,operative notes,and discharge summaries.The main study variables included:age,presenting symptoms,family history,tumor location,operation,stage/differentiation of disease,and post operative complications.Stage of disease was classified according to the American Joint Committee on Cancer TNM staging system:tumor depth;node status;and metastases.RESULTS:CRC was found in 180 patients under age50 years(87 females,93 males;mean age 41.4±6.2years).Young patients accounted for 11.2%of cases during a 6 year period for which the full data set wasavailable.Eight percent had a 1stdegree and 12%a 2nd degree family CRC history.Almost all patients(94%)were symptomatic at diagnosis;common symptoms included:bleeding(59%),obstruction(9%),and abdominal/rectal pain(35%).Evaluation was often delayed and bleeding frequently attributed to hemorrhoids.Advanced stage CRC(Stage 3 or 4)was noted in 53%of patients.Most tumors were distal to the splenic flexure(77%)and 39%involved the rectum.Most patients(95%)had segmental resections;6 patients had subtotal/total colectomy.Poorly differentiated tumors were noted in 12%and mucinous lesions in 19%of patients of which most had Stage 3 or 4 disease.Twenty-two patients(13%)developed recurrence and/or progression of disease to date.Three patients(ages 42,42and 49 years)went on to develop metachronous primary colon cancers within 3 to 4 years of their initial resection.CONCLUSION:CRC was common in young patients with no family history.Young patients with symptoms merit a timely evaluation to avoid presentation with late stage CRC.Elizabeth A Myers Daniel L Feingold Kenneth A Forde Tracey Arnell Joon Ho Jang Richard L Whelan 2013World Journal of Gastroenterology2013,19,34:9
5Definition and classification of cancer cachexia: an international consensus显示文摘Kenneth Fearon Florian Strasser Stefan D Anker Ingvar Bosaeus Eduardo Bruera Robin L Fainsinger Aminah Jatoi Charles Loprinzi Neil MacDonald Giovanni Mantovani Mellar Davis Maurizio Muscaritoli Faith Ottery Lukas Radbruch Paula Ravasco Declan Walsh Andrew 2011Lancet Oncology2011,,5:8
6Residual renal function in peritoneal dialysis with failed allograft and minimum immunosuppression显示文摘Immunosuppression(IS) is often withdrawn in patients with end stage renal disease secondary to a failed renal allograft, and this can lead to an accelerated loss of residual renal function(RRF). As maintenance of RRF appears to provide a survival benefit to peritoneal dialysis(PD) patients, it is not clear whether this benefit of maintaining RRF in failed allograft patients returning to PD outweigh the risks of maintaining IS. A 49 year-old Caucasian male developed progressive allograft failure nine years after living-donor renal transplantation. Hemodialysis was initiated via tunneled dialysis catheter(TDC) and IS was gradually withdrawn. Two weeksafter IS withdrawal he developed a febrile illness, which necessitate removal of the TDC and conversion to PD. He was maintained on small dose of tacrolimus(1 mg/d) and prednisone(5 mg/d). Currently(1 year later) he is doing exceedingly well on cycler-assisted PD. Residual urine output ranges between 600-1200 m L/d. Total weekly Kt/V achieved 1.82. RRF remained well preserved in this patient with failed renal allograft with minimal immunosuppressive therapy. This strategy will need further study in well-defined cohorts of PD patients with failed allografts and residual RRF to determine efficacy and safety.Nadear Elmahi éva Csongrádi Kenneth Kokko Jack R Lewin Jamie Davison Tibor Fülp 2013World Journal of Transplantation2013,3,2:5
7Diagnosing gastrointestinal illnesses using fecal headspacevolatile organic compounds显示文摘Volatile organic compounds(VOCs) emitted from stool are the components of the smell of stool representing the end products of microbial activity and metabolism that can be used to diagnose disease. Despite the abundance of hydrogen, carbon dioxide, and methane that have already been identified in human flatus, the small portion of trace gases making up the VOCs emitted from stool include organic acids, alcohols, esters, heterocyclic compounds, aldehydes, ketones, and alkanes, among others. These are the gases that vary among individuals in sickness and in health, in dietary changes, and in gut microbial activity. Electronic nose devices are analytical and pattern recognition platforms that can utilize mass spectrometry or electrochemical sensors to detect these VOCs in gas samples. When paired with machine-learning and pattern recognition algorithms, this can identify patterns of VOCs, and thus patterns of smell, that can be used to identify disease states. In this review, we provide a clinical background of VOC identification, electronic nose development, and review gastroenterology applications toward diagnosing disease by the volatile headspace analysis of stool.Daniel K Chan Cadman L Leggett Kenneth K Wang 2016World Journal of Gastroenterology2016,22,4:4
8HER-2/neu protein overexpression and gene amplification in human transitional cell carcinoma of the bladder显示文摘Christopher L Coogan Carlos R Estrada Shiv Kapur Kenneth J Bloom 2004Urology2004,,4:2
9The removal of heavy metals from aqueous solutions by sawdust adsorption — removal of lead and comparison of its adsorption with copper显示文摘Bin Yu Y Zhang Alka Shukla Shyam S Shukla Kenneth L Dorris 2001Journal of Hazardous Materials2001,,1:2
10Tissue engineering for neuromuscular disorders of the gastrointestinal tract显示文摘The digestive tract is designed for the optimal processing of food that nourishes all organ systems.The esophagus,stomach,small bowel,and colon are sophisticated neuromuscular tubes with specialized sphincters that transport ingested food-stuffs from one region to another.Peristaltic contractions move ingested solids and liquids from the esophagus into the stomach;the stomach mixes the ingested nutrients into chyme and empties chyme from the stomach into the duodenum.The to-and-fro movement of the small bowel maximizes absorption of fat,protein,and carbohydrates.Peristaltic contractions are necessary for colon function and defecation.Kenneth L Koch Khalil N Bitar John E Fortunato Khalil N Bitar 2012World Journal of Gastroenterology2012,18,47:2
11Management of computed tomography scan detected hemothorax in blunt chest trauma:What computed tomography scan measurements say?显示文摘AIM To investigate the hemothorax size for which tube thoracostomy is necessary.METHODS Over a 5-year period, we included all patients who were admitted with blunt chest trauma to our level 1 trauma center. Focus was placed on identifying the hemothorax size requiring tube thoracostomy.RESULTS A total number of 274 hemothoraces were studied. All patients with hemothoraces measuring above 3 cm received a chest tube. The 50% predicted probability of tube thoracostomy was 2 cm. Pneumothorax was associated with odds of receiving tube thoracostomy for hemothoraces below 2 cm(Odds Ratio:4.967, 95%CI: 2.225-11.097, P < 0.0001).CONCLUSION All patients with a hemothorax size greater than 3% underwent tube thoracostomy. Prospective studies are warranted to elucidate the clinical outcome of patients with smaller hemothoraces.Mahdi Malekpour Kenneth Widom James Dove Joseph Blansfield Mohsen Shabahang Denise Torres Jeffrey L Wild 2018World Journal of Radiology2018,10,12:2
12A fern that hyperaccumulates arsenic显示文摘Ma L Q Kenneth M K Tu C 2001Nature2001,409,6820:1
13Oxdation of α-ionone and the acid-catalyzed rearrangement of 5-ke-to-α-ionone显示文摘Daniel Davis L Kenneth Stevens L Leonard Jurd 1976J Agric Food Chem1976,24,1:1
14Characteristics, covariances, andaverage returns: 1929-1997显示文摘Davis James L Eugene F Fama and Kenneth R 2000Journal of Finance2000,55,:1
15The selective catalytic reduction of nitric oxide by propylene over Pt/SiO2 显示文摘Dinyar K Captain Kenneth L 1998Catalysis Today1998,42,:1
16Numerical Modeling of Concrete Confined by Fiber-Reinforced Composites显示文摘Malvar L J Kenneth B M John E C 2004Journal of Composites for Construction2004,8,4:1
17A Randomized Controlled Trial in Second-Generation Zotarolimus-Eluting Resolute Stents Versus Everolimus-Eluting Xience V Stents in Real-World Patients显示文摘Clemens von Birgelen Mounir W.Z. Basalus Kenneth Tandjung K. Gert van Houwelingen Martin G. Stoel J.(Hans) W. Louwerenburg Gerard C.M. Linssen Salah A.M. Sa?d Miep A.W.J. Kleijne Hanim Sen Marije M. L?wik Job van der Palen Patrick M.J. Verhorst Frits H.A. 2012Journal of the American College of Cardiology2012,,15:1
18Direct dating of sulfides by Rb-Sr:Acritical test using the Polaris Mississippi Valley-type Zn-Pb deposit显示文摘Christensen J N Halliday A N Kenneth E L Roderick N R and Stephen E K 0,,:1
19Financial Strategy : Planning and Managing the Corporate Leverage Position显示文摘Carl M Sandberg Wilbur G Lewellen Kenneth L Stanley 1987Strategic Management Journal1987,8,1:1
20Unique application of car-bon-carboncomposite materials(part two)显示文摘Donald L S Kenneth E D 1999Sample Journal1999,35,4:1
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