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| 1 | Effects of overburden characteristics on dynamic failure in underground coal mining显示文摘Dynamic failures, or ‘‘bumps', remain an imperative safety concern in underground coal mining, despite significant advancements in engineering controls. The presence of spatially discrete, stiff roof units are one feature that has been linked to these events. However, an empirical stratigraphic review indicates that no significant difference exists in the relative commonality of discrete units between bumping and non-bumping deposits. Instead an apparent relationship exists between reportable bumping and the overall stiffness of the host rock. However, this initial study is too simplistic to be conclusive; to weight the relative impact of changes in a single variable, such as the thickness or location of sandstone members, it must be examined in isolation—i.e., in a setting where all other variables are held constant.Numerical modelling provides this setting, and the effects of variability in a stiff discrete member in a hypothetical longwall mining scenario are investigated within the context of three stratigraphic ‘‘types',Compliant, Intermediate and Stiff. A modelling experiment examines changes in rupture potential in stiff roof units for each stratigraphic type as discrete unit thickness and location are manipulated through a range of values. Results suggest that the stiff-to-compliant ratio of the host rock has an impact on the relative stress-inducing effects of discrete stiff members. In other words, it is necessary to consider both the thickness and the distance to the seam, within the context of the host rock, to accurately anticipate areas of elevated rupture-induced hazard; acknowledging the presence of a discrete unit within the overburden in general terms is an insufficient indicator of risk. This finding helps to refine our understanding of the role of individual stiff, strong roof members in bumping phenomena, and suggests that a holistic view of overburden lithology and site-specific numerical modelling may be necessary to improve miner safety. | Lawson Heather E. Tesarik Douglas Larson Mark K Abraham Habte | 2017 | International Journal of Mining Science and Technology2017,27,1: | 7 |
| 2 | Standard forward-viewing colonoscopy versus full-spectrum endoscopy: an international, multicentre, randomised, tandem colonoscopy trial显示文摘 | Ian M Gralnek Peter D Siersema Zamir Halpern Ori Segol Alaa Melhem Alain Suissa Erwin Santo Alan Sloyer Jay Fenster Leon M G Moons Vincent K Dik Ralph B D’Agostino Douglas K Rex | 2014 | Lancet Oncology2014,,3: | 6 |
| 3 | 基于SAVEE方法的海岛空间价值评价——以南沙群岛为例显示文摘对SAVEE评价方法的理论基础、分析步骤、应用条件和优缺点进行了系统归纳和总结,构建了SAVEE评价分析模型。以南沙群岛的空间价值评价为例开展实证研究,尝试将SAVEE方法应用于海岛空间价值评价。结果表明:SAVEE评价法计算简便,可操作性强,能够量化体现每个因子价值,评价结果清晰易懂。SAVEE为空间价值评价方法提供了新的选择,具有极大的应用前景。 | 陈韶阳 程镇燕 Douglas K Loh | 2012 | 海洋环境科学2012,31,1: | 5 |
| 4 | CONSORT指南:整群随机试验扩展版显示文摘 | Marion K Campbell Diana R Elbourne Douglas G Altman 杜亮 姚巡 周吉祥 | 2006 | 中国循证医学杂志2006,6,6: | 5 |
| 5 | Quality in the technical performance of colonoscopy and the continuous quality improvement process for colonoscopy: recommendations of the U.S. Multi-Society Task Force on Colorectal Cancer显示文摘 | Douglas K Rex John H Bond Sidney Winawer Theodore R Levin Randall W Burt David A Johnson Lynne M Kirk Scott Litlin David A Lieberman Jerome D Waye James Church John B Marshall Robert H Riddell | 2002 | The American Journal of Gastroenterology2002,,6: | 3 |
| 6 | Reinterpretation of histology of proximal colon polyps called hyperplastic in 2001显示文摘AIM: To evaluate how proximal colon polyps interpreted as hyperplastic polyps in 2001 would be interpreted by expert pathologists in 2007. METHODS: Forty consecutive proximal colon polyps ≥ 5 mm in size, removed in 2001, and originally interpreted as hyperplastic polyps by general pathologists at Indiana University, were reviewed in 2007 by 3 GI pathologists. RESULTS: The gastrointestinal (GI) pathologists interpreted 85%, 43% and 30% of the polyps as sessile serrated polyps (sessile serrated adenomas). The overall Kappa was 0.16. When diagnoses were compared in pairs, Kappa values were 0.38 and 0.25 (fair agreement) and 0.14 (slight agreement). CONCLUSION: Many polyps interpreted as hyperplastic in 2001 were considered sessile serrated lesions by GI pathologists in 2007, but there is substantial inter-observer variation amongst GI pathologists. | Omer Khalid Sofyan Radaideh Oscar W Cummings Michael J O'Brien John R Goldblum Douglas K Rex | 2009 | World Journal of Gastroenterology2009,15,30: | 3 |
| 7 | Nrf2 is required for normal postnatal bone acquisition in mice显示文摘A large body of literature suggests that bone metabolism is susceptible to the ill effects of reactive species that accumulate in the body and cause cellular dysfunction. One of the body's front lines in defense against such damage is the transcription factor, Nrf2. This transcription factor regulates a plethora of antioxidant and cellular defense pathways to protect cells from such damage. Despite the breadth of knowledge of both the function of Nrf2 and the effects of reactive species in bone metabolism, the direct role of Nrf2 in skeletal biology has yet to be thoroughly examined. Thus, in the current study, we have examined the role of Nrf2 in postnatal bone metabolism in mice. Mice lacking Nrf2(Nrf22/2) exhibited a marked deficit in postnatal bone acquisition,which was most severe at 3 weeks of age when osteoblast numbers were 12-fold less than observed in control animals. While primary osteoblasts from Nrf22/2mice functioned normally in vitro, the colony forming capacity of bone marrow stromal cells(BMSCs) from these mice was significantly reduced compared to controls.This defect could be rescued through treatment with the radical scavenger N-acetyl cysteine(NAC), suggesting that increased reactive species stress might impair early osteoblastogenesis in BMSCs and lead to the failure of bone acquisition observed in Nrf22/2animals. Taken together, these studies suggest Nrf2 represents a key pathway in regulating bone metabolism, which may provide future therapeutic targets to treat osteoporosis. | Jung-Hyun Kim Vandana Singhal Shyam Biswal Rajesh K Thimmulappa Douglas J Di Girolamo | 2014 | Bone Research2014,2,4: | 3 |
| 8 | Clinical Presentation, Investigation, and Management of Pulmonary Vein Stenosis Complicating Ablation for Atrial Fibrillation显示文摘 | Douglas L. Packer Paul Keelan Thomas M. Munger Jerome F. Breen Sam Asirvatham Laura A. Peterson Kristi H. Monahan Mary F. Hauser K Chandrasekaran Lawrence J. Sinak David R. Holmes | 2005 | Circulation2005,,5: | 2 |
| 9 | Accessing proximal aspects of folds and flexures during colonoscopy: impact of a pediatric colonoscope with a short bending section显示文摘 | Douglas K Rex | 2003 | The American Journal of Gastroenterology2003,,7: | 2 |
| 10 | Role of angiotensin-converting enzyme inhibitors and angiotensin receptor blockers in cryoballoon ablation outcomes for paroxysmal atrial fibrillation显示文摘BACKGROUND Cryoballoon ablation(CBA)is recommended for patients with paroxysmal atrial fibrillation(AF)refractory to antiarrhythmic drugs.However,only 80%of patients benefit from initial CBA.There is growing evidence that pretreatment with angiotensin-converting enzyme inhibitors(ACEIs)and angiotensin receptor blockers(ARBs)decreases the recurrence of AF postablation,particularly in nonparoxysmal AF undergoing radiofrequency ablation.The role of ACEIs and ARBs in patients with paroxysmal AF in CBA remains unknown.We decided to investigate the role of ACEIs and ARBs in preventing the recurrence of atrial arrhythmia(AA)following CBA for paroxysmal AF.AIM To investigate the role of ACEIs and ARBs in preventing recurrence of AA following CBA for paroxysmal AF.METHODS We followed 103 patients(age 60.6±9.1 years,29%women)with paroxysmal AF undergoing CBA 1-year post procedure.Recurrence was assessed by documented AA on electrocardiogram or any form of long-term cardiac rhythm monitoring.A multivariable Cox proportional hazard model was used to assess if ACEI or ARB treatment predicted the risk of AA recurrence.RESULTS After a 1-year follow-up,19(18.4%)participants developed recurrence of AA.Use of ACEI or ARB therapy was noted in the study population.Patients on ACEI/ARB had a greater prevalence of hypertension and coronary artery disease.On a multivariate model adjusted for baseline demographics and risk factors for AF,ACEI or ARB therapy did not prevent recurrence of AA following CBA(P=0.72).Similarly,on Kaplan–Meier analysis pretreatment with ACEI/ARB did not predict the time to first recurrence of AA(P=0.2173).CONCLUSION In our study population,preablation treatment with an ACEI or ARB had no influence on the recurrence of AA following CBA for paroxysmal AF. | Ibragim Al-Seykal Abhishek Bose Parag A Chevli Zeba Hashmath Nitish Sharma Ajay K Mishra Douglas Laidlaw | 2022 | World Journal of Cardiology2022,14,10: | 2 |
| 11 | Towards a unified paradigm for sequence‐based identification of fungi显示文摘 | Urmas K?ljalg R. Henrik Nilsson Kessy Abarenkov Leho Tedersoo Andy F. S. Taylor Mohammad Bahram Scott T. Bates Thomas D. Bruns Johan Bengtsson‐Palme Tony M. Callaghan Brian Douglas Tiia Drenkhan Ursula Eberhardt Margarita Due?as Tine Grebenc Gareth W. Gri | 2013 | Mol Ecol2013,,21: | 2 |
| 12 | Outcomes of submucosal(T1b) esophageal adenocarcinomas removed by endoscopic mucosal resection显示文摘AIM To investigate the outcomes and recurrences of p T1 b esophageal adenocarcinoma(EAC) following endoscopic mucosal resection(EMR) and associated treatments.METHODS Patients undergoing EMR with pathologically confirmed T1 b EAC at two academic referral centers were retrospectively identified.Patients were divided into 4 groups based on treatment following EMR:Endoscopic therapy alone(group A),endoscopic therapy with either chemotherapy,radiation or both(group B),surgicalresection(group C) or no further treatment/lost to follow-up(<12 mo)(group D).Pathology specimens were reviewed by a central pathologist.Follow-up data was obtained from the academic centers,primary care physicians and/or referring physicians.Univariate analysis was performed to identify factors predicting recurrence of EAC.RESULTS Fifty-three patients with T1 b EAC underwent EMR,of which 32(60%) had adequate follow-up ≥ 12 mo(median 34 mo,range 12-103).There were 16 patients in group A,9 in group B,7 in group C and 21 in group D.Median follow-up in groups A to C was 34 mo(range 12-103).Recurrent EAC developed overall in 9 patients(28%) including 6(38%) in group A(median:21 mo,range:6-73),1(11%) in group B(median:30 mo,range:30-30) and 2(29%) in group C(median 21 mo,range:7-35.Six of 9 recurrences were local;of the 6 recurrences,5 were treated with endoscopy alone.No predictors of recurrence of EAC were identified.CONCLUSION Endoscopic therapy of T1 b EAC may be a reasonable strategy for a subset of patients including those either refusing or medically unfit for esophagectomy. | Darren D Ballard Neel Choksi Jingmei Lin Eun-Young Choi B Joseph Elmunzer Henry Appelman Douglas K Rex Hala Fatima William Kessler John M DeWitt | 2016 | World Journal of Gastrointestinal Endoscopy2016,8,20: | 2 |
| 13 | Label-retaining liver cancer cells are relatively resistant to sorafenib显示文摘 | Hong-Wu Xin Chenwi M Ambe Danielle M Hari Gordon W Wiegand Tyler C Miller Jin-Qiu Chen Andrew J Anderson Satyajit Ray John E Mullinax Tomotake Koizumi Russell C Langan Douglas Burka Michelle A Herrmann Paul K Goldsmith Alexander Stojadinovic Udo Rudloff S | 2013 | Gut2013,,12: | 2 |
| 14 | Orthodontic tooth movement in the prednisolone-Treated rat显示文摘 | Colin K Laurence J Douglas H | 2000 | Angle Orthod2000,70,: | 1 |
| 15 | Detection of bacterial pathogens in environmental samples using DNA microarrays显示文摘 | DOUGLAS RCALL MONICA K BORUCKI FRANK J LOGE | 2003 | J Microbiol Med2003,53,: | 1 |
| 16 | Nitrogen managemen strategies to nitrate leaching in tile-drained Mid- western soils 显示文摘 | Dana L D Douglas L K Dan B J | 2002 | Agronomy Journal2002,94,: | 1 |
| 17 | Assessing the impact of country of origin on product evaluations: A new methodological perspective 显示文摘 | Johansson J K Douglas S P Nonaka I | 1985 | Journal of Marketing Research1985,22,4: | 1 |
| 18 | Aproximate cue for oviposition site choice in the bitterlingRhodeus sericeus显示文摘 | Smith C Rippon K Douglas A | 2001 | Freshwater Biology2001,46,: | 1 |
| 19 | Guidelines for Conscious Sedation and Monitoring During Gastrointestinal Endoscopy显示文摘 | J.Patrick Waring Todd H Baron William K Hirota Jay L Goldstein Brian C Jacobson Jonathan A Leighton J.Shawn Mallery Douglas O Faigel | 2003 | Gastrointestinal Endoscopy2003,,3: | 1 |
| 20 | The treatment of brain metastases from malignant melanoma显示文摘 | Douglas JG Margolin K | 2002 | Semin Oncol2002,29,5: | 1 |