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| 1 | 高血压患者脑小血管病变化对认知功能的影响显示文摘高血压是脑小血管病进展与认知功能障碍的主要危险因素之一。该研究旨在探讨高血压患者脑小血管病损伤变化与认知功能减退及轻度认知功能障碍的关系。该研究的数据从ISSYS队列(探讨高血压无症状性脑卒中:一个磁共振成像研究)中获得,其是一项纵向人群研究,纳入基线无痴呆及脑卒中,年龄50~70岁的高血压患者。 | Jiménez-Balado J Riba-Llena I Abril O Garde E Penalba A Ostos E Maisterra O Montaner J Noviembre M Mundet X Ventura O Pizarro J Delgado P 赵狄 练桂丽 | 2019 | 中华高血压杂志2019，27，2： | 15 |
| 2 | Experimental and numerical study of the fragmentation of expanding warhead casings by using different numerical codes and solution techniques显示文摘There has been increasing interest in numerical simulations of fragmentation of expanding warheads in 3D.Accordingly there is a pressure on developers of leading commercial codes,such as LS-DYNA.AUTODYN and IMPETUS Afea.to implement the reliable fracture models and the efficient solution techniques.The applicability of the Johnson—Cook strength and fracture model is evaluated by comparing the fracture behaviour of an expanding steel casing of a warhead with experiments.The numerical codes and different numerical solution techniques,such as Eulerian,Lagrangian.Smooth particle hydrodynamics(SPH).and the corpuscular models recently implemented in IMPETUS Afea are compared.For the same solution techniques and material models we find that the codes give similar results.The SPH technique and the corpuscular technique are superior to the Eulerian technique and the Lagrangian technique(with erosion) when it is applied to materials that have fluid like behaviour such as the explosive and the tracer.The Eulerian technique gives much larger calculation time and both the Lagrangian and Eulerian techniques seem to give less agreement with our measurements.To more correctly simulate the fracture behaviours of the expanding steel casing,we applied that ductility decreases with strain rate.The phenomena may be explained by the realization of adiabatic shear bands.An implemented node splitting algorithm in IMPETUS Afea seems very promising. | John F.MOXNES Anne K.PRYTZ Фyvind FRФYLAND Siri KLOKKEHAUG Stian SKRIUDALEN Eva FRIIS Jan A.TELAND Cato DФRUM Gard ФDEGARDSTUEN | 2014 | Defence Technology(防务技术)2014，10，2： | 12 |
| 3 | On the study of ricochet and penetration in sand,water and gelatin by spheres,7.62 mm APM2,and 25 mm projectiles显示文摘We examine the ricochet and penetration behavior in sand, water and gelatin by steel spheres, 7.62 mm APM2 and 25 mm projectiles. A threshold impact angle(critical angle) exists beyond which ricochet cannot occur. The Autodyn simulation code with the smooth particle hydrodynamic(SPH) method and Impetus Afea Solver with the corpuscular model are used and the results are compared with experimental and analytical results. The resistance force in sand for spheres was proportional to a term quadratic in velocity plus a term linear in velocity. The drag coefficient for the quadratic term was 0.65. The Autodyn and Impetus Afea codes simulate too large penetration due to the lack of a linear velocity resistance force. Critical ricochet angles were consistent with analytical results in the literature. In ballistic gelatin at velocities of 50–850 m/s a drag coefficient of 0.30 fits the high speed camera recordings if a linear velocity resistance term is included. However, only a quadratic velocity resistance force with drag coefficient that varies with the Reynolds number also fits the measurements. The simulation of a sphere in water with Autodyn showed too large drag coefficient. The 7.62 mm APM2 core simulations in sand fit reasonable well for both codes. The 25 mm projectile ricochet simulations in sand show consistency with the high speed camera recordings. Computer time was reduced by one to two orders of magnitudes when applying the Impetus Afea Solver compared to Autodyn code due to the use of the graphics processing units(GPU). | John F.MOXNES ∅yvind FR∅YLAND Stian SKRIUDALEN Anne K.PRYTZ Jan A.TELAND Eva FRIIS Gard ∅DEGARDSTUEN | 2016 | Defence Technology(防务技术)2016，12，2： | 6 |
| 4 | Strain rate dependency and fragmentation pattern of expanding warheads显示文摘For the characterization of the behaviors of a metal material in events like expanding warheads, it is necessary to know its strength and ductility at high strain rates, around 104e105/s. The flyer plate impact testing produces the uniform stress and strain rates but the testing is expensive. The Taylor test is relatively inexpensive but produces non-uniform stress and strain fields, and the results are not so easily inferred for material modeling. In the split-Hopkinson bar(SHB), which may be used in compression, tension and torsion testing, the strain rates never exceeds 103/s. In the present work, we use the expanding ring test where the strain rate is 104e105/s. A streak camera is used to examine the expanding ring velocity, and a water tank is used to collect the fragments. The experimental results are compared with the numerical simulations using the hydrocodes AUTODYN, IMPETUS Afea and a regularized smooth particle(RSPH) software. The number of fragments increases with the increase in the expansion velocity of the rings. The number of fragments is similar to the experimental results. The RSPH software shows much the same results as the AUTODYN where the Lagrangian solver is used for the ring. The IMPETUS Afea solver shows a somewhat different fragmentation characteristic due to the node splitting algorithm that induces pronounced tensile splitting. | John F.MOXNES Anne K.PRYTZ Фyvind FR?YLAND Stian SKRIUDALEN Steinar BФRVE Gard ФDEGARDSTUEN | 2015 | Defence Technology(防务技术)2015，11，1： | 5 |
| 5 | Projected area and drag coefficient of high velocity irregular fragments that rotate or tumble显示文摘3 degrees of freedom(DOF)exterior ballistic computer models are used in fragment studies to calculate individual trajectories of each fragment based on drag coefficient and the projected(presented)area in the direction of velocity of center of mass.The expectation of a randomly distributed projected area is commonly used for fragments that tumble(random rotation)during flight.We forecast a model where the expected drag coefficient is dependent of shape and Mach number.Rotation or tumbling only affects the expected projected area.Models of projected areas during tumbling and rotation are presented.An examination of the data by Mc Cleskey(1988)indicates that the volume of the fragment to the power of2/3 is a better parameter to characterize the drag coefficient of the fragments than the maximum projected area.Hydrocode simulations are used to verify results and to study projected area and drag coefficient of fragments. | John F. Moxnes 0yvind Fr0 yland Ivar J. 0ye Tom I. Brate Eva Friis Gard 0degardstuen Tallak H. Risdal | 2017 | Defence Technology(防务技术)2017，13，4： | 3 |
| 6 | Angular Distribution of Element Contents in Tree Rings and the Environmental Information显示文摘Element contents of tree rings and soils near tree roots collected from Deodar cedar (Cedrus deodara (Roxb.) G. Don) and Masson pine (Picks massoniana lamb.) were determined to study the relationship between the angular distribution of element contents in tree rings and the environmental information. The chemical composition and properties of soils are very much complicated, which leads to the non-uniform distribution of the element contents in tree rings. The statistical multi-variable regression method was used to got the information of the tree-centered distribution of element contents in the environment (soil) (C’), C’(z, θj ), from the distribution of element contents in tree rings (C), C(Z, θi), which depends on the plane azimuth angle (θi), i. e., C=C(Z,θi), where Z is the atomic number of the element, with a satisfactory result,though this study is only a primary one. | KE SHANZHE LIU ZHENGRONG QIAN JUNLONG CHEN RUSONGI and KE XIAOKANG (Physics Department, Nanjing University, Nanjing 210095,China)(Nanjing Institute of Geogmphy and Limnology, the Chinese Academy of Sciences, Nanjing 210008, China)(Garded and Greenbelt | 1999 | Pedosphere1999，9，1： | 2 |
| 7 | 显示文摘 | Gard R Sun Z X Forsling W | 1995 | J Coll Interf Sci1995，169，： | 1 |
| 8 | ITS primer with enhanced specificity for basidiomycetes : application to the identification of mycorrbizae and rusts 显示文摘 | Gardes M Bruns T D | 1993 | Mol Ecol1993，2，： | 1 |
| 9 | The Effects of State-structured Population Growth Model显示文摘 | Cao Y Fan J Gard T C | 1992 | Nonlin Appl1992，16，2： | 1 |
| 10 | Discriminative validity of the Danish version of the Pediatric Evaluation of Disability Inventory (PEDI) 显示文摘 | Stahlhut M Gard G Aadahl M | 2011 | Phys Occup Ther Pediatr2011，31，1： | 1 |
| 11 | Sperm traits and male fertility in natu- ral populations显示文摘 | Gomendio M Malo AF Garde J | 2010 | Reproduction2010，134，1： | 1 |
| 12 | Management of uterine leimyosarcoma in Australia显示文摘 | Gregory B Gard F | 1999 | Aust NZ J Obstet Gynaecol1999，39，1： | 1 |
| 13 | Prostate-a novel target for evaluation of FSH modulating peptides 显示文摘 | Shah MG Hurkadli KS Garde SV | 1991 | Indian J Exp Biol1991，29，2： | 1 |
| 14 | The Desmoid Tumor:' Benign'Neoplasm,not a benign Disease显示文摘 | Mendez-Femandez M Gard DA | 1991 | Plast Reconstr Surg1991，87，5： | 1 |
| 15 | Development of climatic zones and passive solar design in Madagascar 显示文摘 | Rakoto-Joseph O Garde F David M | 2009 | Energy Conversion and Management2009，50，4： | 1 |
| 16 | A High Index of Suspicion: The Key to an Early Diagnosis of Wilson’s Disease in Childhood显示文摘 | Icíar Sánchez-Albisua Teresa Garde Loreto Hierro Carmen Camarena Esteban Frauca Angela de la Vega María Carmen Díaz Javier Larrauri Paloma Jara | 1999 | Journal of Pediatric Gastroenterology & Nutrition1999，，2： | 1 |
| 17 | A novel in vitro wound biofilm model used to evaluate low - frequency ul- trasonic- assisted wound debridement 显示文摘 | Crone S Garde C Bjarnshoh T | 2015 | J Wound Care2015，24，2： | 1 |
| 18 | Real-TimeAnalysis of Individual Atmospheric Aerosol Particles ;Design and Performance of a Portable ATOFMS 显示文摘 | Gard E Mayer J E Morrical B D | 1997 | Analytical Chemistry1997，69，： | 1 |
| 19 | ITS primer with enhancod specificity for basidiomycetes : Application to the identification of mycorrhizae an drusts显示文摘 | Gardes M Bruns TD | 1993 | Mol Ecol1993，2，： | 1 |
| 20 | Occurrence and de novo biosynthesis of follicle-stimulating hormone (FSH) in benign and malignant conditions of human breast显示文摘 | Garde SV Sheth AR Joseph R | 1993 | Cancer Lett1993，75，1： | 1 |
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