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| 1 | Spectral reflectance response to nitrogen fertilization in field grown corn显示文摘This study was carried out to analyze the spectral reflectance response of different nitrogen levels for corn crops.Four different nitrogen treatments of 0%,80%,100%and 120%BMP(best management practice)were studied.Principal component analysis-loading(PCA-loading)was used to identify the effective wavelengths.Partial least squares(PLS)and multiple linear regression(MLR)models were built to predict different nitrogen values.Vegetation indices(VIs)were calculated and then used to build more prediction models.Both full and selected wavelengths-based models showed similar prediction trends.The overall PLS model obtained the coefficient of determination(R^(2))of 0.6535 with a root mean square error(RMSE)of 0.2681 in the prediction set.The selected wavelengths for overall MLR model obtained the R^(2) of 0.6735 and RMSE of 0.3457 in the prediction set.The results showed that the wavelengths in visible and near infrared region(350-1000 nm)performed better than the two either spectral regions(1001-1350/1425-1800 nm and 2000-2400 nm).For each data set,the wavelengths around 555 nm and 730 nm were identified to be the most important to predict nitrogen rates.The vogelmann red edge index 2(VOG 2)performed the best among all VIs.It demonstrated that spectral reflectance has the potential to be used for analyzing nitrogen response in corn. | Chuanqi Xie Ce Yang Alexander Hummel Jr Gregg A Johnson Forrest T Izuno | 2018 | International Journal of Agricultural and Biological Engineering2018，11，4： | 2 |
| 2 | Comparison of the adsorption of N2 on Ru(109) and Ru(001)-a detailed look at the role of atomic step and terrace sites显示文摘 | Morgan Jr Gregg A Sorescu Dan C Yates Jr John T | 2007 | Surface Science2007，601，： | 1 |
| 3 | Downregulation of oligodendrocyte transcripts is associated with impaired prefrontal cortex function in rats显示文摘 | Gregg JR Herring N R Naydenov AV | | 0，，2： | 1 |
| 4 | Pediatric fracture without radiographic abnormality: description and signification显示文摘 | Naranja RJ Gregg JR Dormans JP | 1997 | Clin Orthop1997，342，： | 1 |
| 5 | Quality of care and outcomes in patients with diabetes hospitalized with ischemic stroke:findings from get with the guidelinesstroke显示文摘 | Mathew JR Robert SV Gregg C | | 0，，： | 1 |
| 6 | Pediatric fracture without radiographic abnormality:description and significance 显示文摘 | Naranja RJ Gregg JR Dormans JP | 2010 | Clin Or-thop2010，342，： | 1 |
| 7 | Arthroplasty of the hip and knee in juvenile rheumatoid arthritis显示文摘 | Human BS Gregg JR | 1991 | Rheum Dis Clin North Am1991，17，4： | 1 |
| 8 | Effect of preoperative nutritional deficiency on mortality after radical cystectomy for bladder cancer显示文摘 | Gregg JR Cookson MS Phillips S | 2011 | J Urol2011，185，1： | 1 |
| 9 | AnMTP inhibitor that normalizes atherogenic lipoprotein levels in WHHL rabbits 显示文摘 | Wetterau JR Gregg RE Harrity TW | 1998 | Science1998，282，： | 1 |
| 10 | Guideline-based management of non-muscle invasive bladder cancer显示文摘 | Gregg JR Dahm P Chang SS | 2015 | Indian J Urol2015，31，4： | 1 |
| 11 | Intravascular ultrasound assessment of the incidence and predictors of edge dissections and intramural hematomas after drug-eluting stent implantation显示文摘Objective We used intravascular ultrasound (IVUS) to assess incidence, predictors, morphology, and angiographic findings of edge dissections and intramural hematomas after drug-eluting stent (DES) implantation. Methods We studied 887 patients with 1 045 non-in-stent restenosis lesions in 977 native arteries undergoing DES implantation with IVUS imaging, and compared the dissected stent end to the non-dissected stent end. Results Eighty-two dissections were detected; 51.2% (42/82) involved the proximal and 48.8% (40/82) the distal stent edge. When compared to the non-dissected stent end, residual plaque area [(8.0±4.3) mm2 vs (5.2±3.0) mm2, P<0.01], plaque burden [(52±12)% vs (36±15)%, P<0.01], plaque eccentricity (8.4±5.5 vs 4.0±3.4, P<0.01), and stent edge symmetry (1.17±0.11 vs 1.14±0.08, P=0.02) were larger; plaque burden≥50% was more frequent (62% vs 17%, P<0.01) and calcium deposits (52.5% vs 35.6%, P=0.03) more common; and the lumen/stent area (0.86±0.16 vs 1.02±0.18, P<0.01) was smaller in the stent dissected end. Independent predictors of stent edge dissection were residual plaque eccentricity (OR=1.3, P<0.01) and residual plaque burden≥50% (OR=7.3, P<0.01). Intramural hematomas occurred in 34.1% (28/82) of dissections.Independent predictors of intramural hematomas were plaque eccentricity (OR=1.4, P=0.005), plaque burden≥50% (OR=7.1, P=0.02), and mean lumen diameter to stent diameter ratio (OR=0.37, P=0.04).Concluslon IVUS identified edge dissections after 9.4% of DES implantations. Residual plaque eccentricity and significant plaque burden predicted coronary stent edge dissections. Dissections in less diseased reference segments with an arc of normal vessel wall (greater plaque eccentricity) more often evolved into an intramural hematoma. | Gary S.Mintz Stéphane G.Carlier Jose de Ribamar Costa Jr Koichi Sano Joanna Lui Giora Weisz Issam Moussa George D.Dangas Roxana Mehran Edward M.Kreps Michael Collins Gregg W.Stone Jeffrey W.Moses GE Junbo Martin B.Leon | 2007 | 上海医学2007，30，S1： | 0 |
| 12 | Assessment of inconclusive left main coronary lesions: lessons from an intravascular ultrasound study显示文摘Objective Angiographic assessment of a left main coronary artery (LMCA) stenosis is often difficult and unreliable. Intravascular ultrasound (IVUS) assessment of absolute lumen dimensions has been shown to correlate with fractional flow reserve (FFR) and to predict clinical outcome in patients with a LMCA stenosis. Methods During 21 months period (October, 2004 to July, 2006), 153 patients (Ostial lesions, n=47; Non-ostial lesion, n=106) underwent IVUS evaluation specifically to assess the severity of an angiographically inconclusive LMCA narrowing. IVUS analysis included plaque morphology; external elastic membrane (EEM), lumen, plaque cross-sectional areas (CSA), plaque burden (plaque CSA/ EEM) and remodeling index (lesion EEM CSA/reference EEM CSA). Results Overall, minimum lumen area (MLA) and diameter (MLD) and plaque burden measured 8.2 mm2, 2.6 mm, and 59.3 %, respectively. An MLA<6.0 mm2 (which has been shown to correlate with a FFR <0.75) was seen 41.5% in ostial lesions and 44.5% in non-ostial lesions. In particular, ostial LMCA lesions had a larger MLA and a smaller plaque burden than non-ostial lesions (Table). Conclusions Patients referred for LMCA evaluation commonly have insignificant narrowing. Negative remodeling was prominent at the LMCA ostium. These patients deserve IVUS assessment before revascularization. | Gary S.Mintz Stéphane G.Carlier Jose de Ribamar Costa Jr Koichi Sano Joanna Lui Giora Weisz Issam Moussa George D.Dangas Roxana Mehran Edward M.Kreps Michael Collins Gregg W.Stone Jeffrey W.Moses Junbo Ge Martin B.Leon | 2007 | 上海医学2007，30，S1： | 0 |
| 13 | Volumetric intravascular ultrasound comparisons of drug-eluting stent thrombosis and in-stent restenosis显示文摘Objectives We compared intravascular ultrasound (IVUS) findings of drug-eluting stent (DES)-treated lesions that developed stent thrombosis versus in-stent restenosis (ISR) to identify underlying mechanical differences. Methods IVUS findings in 15 post-DES thrombosis patients were compared with 45 matched ISR patients who had no evidence of stent thrombosis. Results Minimum stent area [MSA, (3.7±0.8) mm2 vs (4.9±1.8) mm2, P=0.01], minimum stent diameter [(1.9±0.3) mm vs (2.3±0.4) mm, P=0.005], mean stent area [(5.2±0.8) mm2 vs (7.2±2.1) mm2, P<0.01], and both focal [MSA/reference lumen area, (54.7±15.9)% vs (75.0±20.1)%, P=0.001] and diffuse stent expansion [mean stent area/reference lumen area, (76.6±23.0)% vs (110.3±23.3)%, P<0.01] were significantly smaller in the stent thrombosis group (vs the ISR group). An MSA <4.0 mm2 (73.3% vs 35.6%, P=0.01) or <5.0 mm2 (86.7% vs 53.3%, P=0.02) was more often found in the stent thrombosis group (vs the ISR group). The MSA site occurred more frequently in the proximal stent segment within the stent thrombosis group compared to the ISR group (60% vs 24.4%, P=0.01). There were no differences in edge dissection, stent fracture, or stent-vessel wall malapposition between the two groups. Independent predictors of stent thrombosis were diffuse stent expansion (OR=1.5, P=0.03) and proximal location of the MSA site (OR=12.7, P=0.04). Conclusion DES-treated lesions that develop thrombosis or restenosis are often underexpanded. Underexpansion appears to be more severe in DES-thrombosis lesions. Lesions with diffuse underexpansion and a proximal (vs distal) underexpanded MSA site are more predisposed to thrombus formation than ISR. | Gary S.Mintz Stéphane G.Carlier Jose de Ribamar Costa Jr Koichi Sano Joanna Lui Giora Weisz Issam Moussa George D.Dangas Roxana Mehran Edward M.Kreps Michael Collins Gregg W.Stone Jeffrey W.Moses GE Junbo Martin B.Leon | 2007 | 上海医学2007，30，S1： | 0 |
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