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573篇 您的检索式:作者名="Franks I"
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1Environmental issues from coal mining and their solutions显示文摘The environmental challenges from coal mining include coal mine accidents,land subsidence,damage to the water environment,mining waste disposal and air pollution.These are either environmental pollution or landscape change.A conceptual framework for solving mine environmental issues is proposed.Clean processes,or remediation measures,are designed to address environmental pollution.Restoration measures are proposed to handle landscape change.The total methane drainage from 56 Chinese high methane concentration coal mines is about 101.94 million cubic meters.Of this methane,19.32 million,35.58 million and 6.97 million cubic meters are utilized for electricity generation,civil fuel supplies and other industrial purposes,respectively.About 39% of the methane is emitted into the atmosphere.The production of coal mining wastes can be decreased 10% by reuse of mining wastes as underground fills,or by using the waste as fuel for power plants or for raw material to make bricks or other infrastructure materials.The proper use of mined land must be decided in terms of local physical and socio-economical conditions.In European countries more than 50% of previously mined lands are reclaimed as forest or grass lands.However,in China more than 70% of the mined lands are reclaimed for agricultural purposes because the large population and a shortage of farmlands make this necessary.Reconstruction of rural communities or native residential improvement is one environmental problem arising from mining.We suggest two ways to reconstruct a farmer's house in China.BIAN, Zhengfu INYANG, Hilary I DANIELS, John L OTTO, Frank STRUTHERS, Sue 2010Mining Science and Technology2010,20,2:47
2How to identify which patients with asymptomatic carotid stenosis could benefit from endarterectomy or stenting显示文摘Offering routine carotid endarterectomy(CEA)or carotid artery stenting(CAS)to patients with asymptomatic carotid artery stenosis(ACS)is no longer considered as the optimal management of these patients.Equally suboptimal,however,is the policy of offering only best medical treatment(BMT)to all patients with ACS and not considering any of them for prophylactic CEA.In the last few years,there have been many studies aiming to identify reliable predictors of future cerebrovascular events that would allow the identification of patients with high-risk ACS and offer a prophylactic carotid intervention only to these patients to prevent them from becoming symptomatic.All patients with ACS should receive BMT.The present article will summarise the evidence suggesting ways to identify these high-risk asymptomatic individuals,namely:(1)microemboli detection on transcranial Doppler,(2)plaque echolucency on Duplex ultrasound,(3)progression in the severity of ACS,(4)silent embolic infarcts on brain CT/MRI,(5)reduced cerebrovascular reserve,(6)increased size of juxtaluminal hypoechoic area,(7)identification of intraplaque haemorrhage using MRI and(8)carotid ulceration.The evidence suggests that approximately 10%-15%of patents with asymptomatic stenosis might benefit from intervention;this will become more clear after publication of ongoing studies comparing stenting or endarterectomy with best medical therapy.In the meantime,no patient should be offered intervention unless there is evidence of high risk of ipsilateral stroke,from modalities such as those discussed here.Kosmas I Paraskevas Frank J Veith J David Spence 2018Stroke & Vascular Neurology2018,3,2:10
3Correlation analysis of dual-energy CT iodine maps with quantitative pulmonary perfusion MRI显示文摘AIM:To correlate dual-energy computed tomography(DECT) pulmonary angiography derived iodine maps with parameter maps of quantitative pulmonary perfusion magnetic resonance imaging(MRI).METHODS:Eighteen patients with pulmonary perfusion defects detected on DECT derived iodine maps were included in this prospective study and additionally underwent time-resolved contrast-enhanced pulmonary MRI [dynamic contrast enhanced(DCE)-MRI].DCE-MRI data were quantitatively analyzed using a pixel-by-pixel deconvolution analysis calculating regional pulmonary blood flow(PBF),pulmonary blood volume(PBV) and mean transit time(MTT) in visually normal lung parenchyma and perfusion defects.Perfusion parameterswere correlated to mean attenuation values of normal lung and perfusion defects on DECT iodine maps.Two readers rated the concordance of perfusion defects in a visual analysis using a 5-point Likert-scale(1 = no correlation,5 = excellent correlation).RESULTS:In visually normal pulmonary tissue mean DECT and MRI values were:22.6 ± 8.3 Hounsfield units(HU);PBF:58.8 ± 36.0 mL/100 mL per minute;PBV:16.6 ± 8.5 mL;MTT:17.1 ± 10.3 s.In areas with restricted perfusion mean DECT and MRI values were:4.0 ± 3.9 HU;PBF:10.3 ± 5.5 mL/100 mL per minute,PBV:5 ± 4 mL,MTT:21.6 ± 14.0 s.The differences between visually normal parenchyma and areas of restricted perfusion were statistically significant for PBF,PBV and DECT(P < 0.0001).No linear correlation was found between MRI perfusion parameters and attenuation values of DECT iodine maps(PBF:r = 0.35,P = 0.15;PBV:r = 0.34,P = 0.16;MTT:r = 0.41,P = 0.08).Visual analysis revealed a moderate correlation between perfusion defects on DECT iodine maps and the parameter maps of DCE-MRI(mean score 3.6,k 0.45).CONCLUSION:There is a moderate visual but not statistically significant correlation between DECT iodine maps and perfusion parameter maps of DCE-MRI.Jan Hansmann Paul Apfaltrer Frank G Zoellner Thomas Henzler Mathias Meyer Gerald Weisser Stefan O Schoenberg Ulrike I Attenberger 2013World Journal of Radiology2013,5,5:6
4Vanishing bile duct syndrome in human immunodeficiency virus: Nevirapine hepatotoxicity revisited显示文摘Vanishing bile duct syndrome (VBDS) refers to a group of disorders characterized by prolonged cholestasis as a result of destruction and disappearance ofintrahepatic bile ducts. Multiple etiologies have been indentifi ed including infections, neoplastic disorders, autoimmune conditions and drugs. The natural history of this condition is variable and may involve resolution of cholestasis or progression with irreversible damage. VBDS is extremely rare in human immunodeficiency virus (HIV)-infected patients and anti-retroviral therapy has never been implicated as a cause. We encountered a young pregnant female with HIV and VBDS secondary to anti-retroviral therapy. Here, we report her clinical course and outcome.Rajan Kochar Moises I Nevah Frank J Lukens Michael B Fallon Victor I Machicao 2010World Journal of Gastroenterology2010,16,26:6
5Retrograde-viewing device improves adenoma detection rate in colonoscopies for surveillance and diagnostic workup显示文摘AIM:To determine which patients might benefit most from retrograde viewing during colonoscopy through subset analysis of randomized,controlled trial data.METHODS:The Third Eye Retroscope Randomized Clinical Evaluation(TERRACE) was a randomized,controlled,multicenter trial designed to evaluate the efficacy of a retrograde-viewing auxiliary imaging device that is used during colonoscopy to provide a second video image which allows viewing of areas on the proximal aspect of haustral folds and flexures that are difficult to see with the colonoscope's forward view.We performed a post-hoc analysis of the TERRACE data to determine whether certain subsets of the patient population would gain more benefit than others from use of the device.Subjects were patients scheduled for colonoscopy for screening,surveillance or diagnostic workup,and each underwent same-day tandem examinations with standard colonoscopy(SC) and Third Eye colonoscopy(TEC),randomized to SC followed by TEC or vice versa.RESULTS:Indication for colonoscopy was screening in 176/345 subjects(51.0%),surveillance after previous polypectomy in 87(25.2%) and diagnostic workup in 82(23.8%).In 4 subjects no indication was specified.Previously reported overall results had shown a net additional adenoma detection rate(ADR) with TEC of 23.2% compared to SC.Relative risk(RR) of missing adenomas with SC vs TEC as the initial procedure was 1.92(P = 0.029).Post-hoc subset analysis shows additional ADRs for TEC compared to SC were 4.4% for screening,35.7% for surveillance,55.4% for diagnostic and 40.7% for surveillance and diagnostic combined.The RR of missing adenomas with SC vs TEC was 1.11(P = 0.815) for screening,3.15(P = 0.014) for surveillance,8.64(P = 0.039) for diagnostic and 3.34(P = 0.003) for surveillance and diagnostic combined.Although a multivariate Poisson regression suggested gender as a possibly significant factor,subset analysis showed that the difference between genders was not statistically significant.Age,bowel prep quality and withdrawal time did not significantly affect the RR of missing adenomas with SC vs TEC.Mean sizes of adenomas detected with TEC and SC were similar at 0.59 cm and 0.56 cm,respectively(P = NS).CONCLUSION:TEC allows detection of significantly more adenomas compared to SC in patients undergoing surveillance or diagnostic workup,but not in screening patients(ClinicalTrials.gov Identifier:NCT01044732).Peter D Siersema Amit Rastogi Anke M Leufkens Paul A Akerman Kassem Azzouzi Richard I Rothstein Frank P Vleggaar Alessandro Repici Giacomo Rando Patrick I Okolo Olivier Dewit Ana Ignjatovic Elizabeth Odstrcil James East Pierre H Deprez Brian P Saunders Anthony N Kalloo Bradley Creel Vikas Singh Anne Marie Lennon Daniel C DeMarco 2012World Journal of Gastroenterology2012,18,26:6
6Role of dietary phospholipids and phytosterols in protection against peptic ulceration as shown by experiments on rats显示文摘Geographically the prevalence of duodenal ulceration is related to the staple foods in the diet in regions of developing countries where the diet is stable.It is higher in regions where the diet is based on milled rice,refined wheat or maize,yams,cassava,sweet potato,or green bananas,and is lower in regions where the staple diet is based on unrefined wheat or maize,soya,certain millets or certain pulses.Experiments on rat gastric and duodenal ulcer models showed that it was the lipid fraction in staple foods from low prevalence areas that was protective against bothgastric and duodenal ulceration,including ulceration due to non-steroidal anti-inflammatory drugs(NSAIDs).It also promoted ulcer healing.The lipid from the pulse,Dolichos biflorus,horse gram which was highly protective was used to identify the fractions with protective activity in the lipid.The protective activity lay in the phospholipid,sterol and sterol ester fractions.In the phospholipid fraction phosphatidyl choline(lethicin) and phosphatidyl ethanolamine(cephalin) were predominant.In the sterol fraction the sub-fractions showing protective activity contained β-sitosterol,stigmasterol,and an unidentified isomer of β-sitosterol.The evidence from animal models shows that certain dietary phospholipids and phytosterols have a protective action against gastroduodenal ulceration,both singly and in combination.This supports the protective role of staple diets in areas of low duodenal ulcer prevalence and may prove to be of importance in the prevention and treatment of duodenal ulceration and management of recurrent ulcers.A combination of phospholipids and phytosterols could also play an important role in protection against ulceration due to NSAIDs.Frank I Tovey 2015World Journal of Gastroenterology2015,21,5:5
7Trends in treatment and overall survival among patients with proximal esophageal cancer显示文摘BACKGROUND The management of proximal esophageal cancer differs from that of tumors located in the mid and lower part of the esophagus due to the close vicinity of vital structures.Non-surgical treatment options like radiotherapy and definitive chemoradiation(CRT)have been implemented.The trends in(non-)surgical treatment and its impact on overall survival(OS)in patients with proximal esophageal cancer are unclear,related to its rare disease status.To optimize treatment strategies and counseling of patients with proximal esophageal cancer,it is therefore essential to gain more insight through real-life studies.AIM To establish trends in treatment and OS in patients with proximal esophageal cancer.METHODS In this population-based study,patients with proximal esophageal cancer diagnosed between 1989 and 2014 were identified in the Netherlands Cancer Registry.The proximal esophagus consists of the cervical esophagus and the upper thoracic section,extending to 24 cm from the incisors.Trends in radiotherapy,chemotherapy,and surgery,and OS were assessed.Analyses were stratified by presence of distant metastasis.Multivariable Cox proportional hazards regression analyses was performed to assess the effect of period of diagnosis on OS,adjusted for patient,tumor,and treatment characteristics.RESULTS In total,2783 patients were included.Over the study period,the use of radiotherapy,resection,and CRT in non-metastatic disease changed from 53%,23%,and 1%in 1989-1994 to 21%,9%,and 49%in 2010-2014,respectively.In metastatic disease,the use of chemotherapy and radiotherapy increased over time.Median OS of the total population increased from 7.3 mo[95%confidence interval(CI):6.4-8.1]in 1989-1994 to 9.5 mo(95%CI:8.1-10.8)in 2010-2014(logrank P<0.001).In non-metastatic disease,5-year OS rates improved from 5%(95%CI:3%-7%)in 1989-1994 to 13%(95%CI:9%-17%)in 2010-2014(logrank P<0.001).Multivariable regression analysis demonstrated a significant treatment effect over time on survival.In metastatic disease,median OS was 3.8 mo(95%CI:2.5-5.1)in 1989-1994,and 5.1 mo(95%CI:4.3-5.9)in 2010-2014(logrank P=0.26).CONCLUSION OS significantly improved in non-metastatic proximal esophageal cancer,likely to be associated with an increased use of CRT.Patterns in metastatic disease did not change significantly over time.Judith de Vos-Geelen Sandra ME Geurts Liselot BJ Valkenburg-van Iersel Evelien JM de Jong Vivianne CG Tjan-Heijnen Margreet van Putten Valery EPP Lemmens Heike I Grabsch Nadia Haj Mohammad Frank JP Hoebers Chantal V Hoge Paul M Jeene Hanneke WM van Laarhoven Tom Rozema Marije Slingerland Grard AP Nieuwenhuijzen 2019World Journal of Gastroenterology2019,25,47:2
8Precise role of H pylori in duodenal ulceration显示文摘The facts that H pylori infection is commoner in duodenal ulcer (DU) patients than in the normal population, and that eradication results in most cases being cured, have led to the belief that it causes DU. However, early cases of DU are less likely than established ones to be infected. H pylori-negative cases are usually ascribed to specific associated factors such as non-steroidal anti-inflammatory drugs (NSAIDs), Crohn’s disease, and hypergastrinaemia, but even after excluding these, several H pylori-negative cases remain and are particularly common in areas of low prevalence of H pylori infection. Moreover, this incidence of H pylori negative DU is not associated with a fall in overall DU prevalence when compared with countries with a higher H pylori prevalence. In countries with a high H pylori prevalence there are regional differences in DU prevalence, but no evidence of an overall higher prevalence of DU than in countries with a low H pylori prevalence. There is no evidence that virulence factors are predictive of clinical outcome. After healing following eradication of H pylori infection DU can still recur. Medical or surgical measures to reduce acid output can lead to long-term healing despite persistence of H pylori infection. Up to half of cases of acute DU perforation are H pylori negative. These findings lead to the conclusion that H pylori infection does not itself cause DU, but leads to resistance to healing, i.e., chronicity. This conclusion is shown not to be incompatible with the universally high prevalence of DU compared with controls.Michael Hobsley Frank I Tovey John Holton 2006World Journal of Gastroenterology2006,12,40:2
9Propranolol for the prevention of postoperative arrhythmias in general thoracic surgery显示文摘Charles D Bayliff David R Massel Richard I Inculet Richard A Malthaner Susan D Quinton Frank S Powell Renee S Kennedy 1999The Annals of Thoracic Surgery1999,,1:2
10ST-segment resolution and prognosis after facilitated versus primary percutaneous coronary intervention in acute myocardial infarction:a meta-analysis显示文摘Eitel I Franke A Schuler G 2010Clin Res Cardiol2010,99,1:1
11Analysis of passing sequences, shots and goals in soccer显示文摘Hughes M Franks I 2005J Sports Sci2005,23,5:1
12Laparoscopic partial nephrectomy for renal tumors显示文摘GILL IS COLOMBO JR JR FRANK I 2005J Urol2005,174,3:1
13Generalized cap model for geological materials显示文摘Sandler I S Frank L Dimaggio F 1976Journal of the geotechnical engineering division(ASCE)1976,102,7:1
14Intermediate filament cytoskeleton of amnion eplthehum and cultured amnion epithelial cells expression of epidermal cytokeratins in ceils of a simple epithelium 显示文摘REGAUER S FRANKE W W VIRTANEN I 1985J Cell Biol1985,100,4:1
15Expression and activity of mitogen activated protein kinases in human colorectal carcinoma显示文摘S Eggstein M Franke I Kutschka 1999Gut1999,44,:1
16Histochemical and ultra structural study of the human pineal gland in the course of aging 显示文摘Galliani I Frank F Gobbi P 1989J Submicrosc Cytol Pathol1989,21,3:1
17BDNF Val66Met genotype modulates the effect of childhood adversity on subgenual anterior cingulate cortex volume in healthy subjects显示文摘Gerritsen L Tendolkar I Franke B 0,,:1
18The generation of movement patterns during the acquisition of a pursuit tracking task显示文摘FRANK I M WILLBERG R B 1982Human Mov Sci1982,1,:1
19Prenatal development of lung antioxidant enzymes in four species 显示文摘Frank L So senko I R S 1987J Pediat1987,110,:1
20Carbon isotope discrimination,ash,and canopy temperature in three wheat-grass species显示文摘Frank A B Ray I M Berdahl J D 1997Crop Science1997,37,5:1
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