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| 1 | 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 |
| 2 | 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 |
| 3 | 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 |
| 4 | 2012 American College of Rheumatology guidelines for management of gout. Part 1: Systematic nonpharmacologic and pharmacologic therapeutic approaches to hyperuricemia显示文摘 | Dinesh Khanna John D. Fitzgerald Puja P. Khanna Sangmee Bae Manjit K. Singh Tuhina Neogi Michael H. Pillinger Joan Merill Susan Lee Shraddha Prakash Marian Kaldas Maneesh Gogia Fernando Perez‐Ruiz Will Taylor Frédéric Lioté Hyon Choi Jasvinder A. Singh Ni | 2012 | Arthritis Care Res2012，，10： | 4 |
| 5 | 2012 American College of Rheumatology guidelines for management of gout. Part 2: Therapy and antiinflammatory prophylaxis of acute gouty arthritis显示文摘 | Dinesh Khanna Puja P. Khanna John D. Fitzgerald Manjit K. Singh Sangmee Bae Tuhina Neogi Michael H. Pillinger Joan Merill Susan Lee Shraddha Prakash Marian Kaldas Maneesh Gogia Fernando Perez‐Ruiz Will Taylor Frédéric Lioté Hyon Choi Jasvinder A. Singh Ni | 2012 | Arthritis Care Res2012，，10： | 2 |
| 6 | Rates and risk factors of liver fibrosis progression in patients with chronic hepatitis C显示文摘 | Thierry Poynard Vlad Ratziu Frédéric Charlotte Zachary Goodman John McHutchison Janice Albrecht | 2001 | Journal of Hepatology2001，，： | 1 |
| 7 | Degradation of sterols and terrigenous organic matter in waters of the Mackenzie Shelf, Canadian Arctic显示文摘 | Jean-Fran?ois Rontani Bruno Charrière Richard Sempéré David Doxaran Frédéric Vaultier Jorien E. Vonk John K. Volkman | 2014 | Organic Geochemistry2014，，： | 1 |
| 8 | Droplet digital PCR measurement of HER2 copy number alteration in formalin - fixed paraffin- embedded breast carcinoma tissue 显示文摘 | Phillip B Stephanie CT John FR | 2013 | Clin Chem2013，59，6： | 1 |
| 9 | Successful management of elderly breast Cancer patients treated without radiotherapy显示文摘 | Kalliope V David LM John FR | 2007 | W J Surg Oncol2007，，5： | 1 |
| 10 | The use of a triangular pedicle flap for oral commisuroplasty:report of a case显示文摘 | Johns FR Sandler NA Ochs MW | 1998 | Oral Maxilofac Surg1998，56，2： | 1 |
| 11 | Nanoerythropoietin Is 10-Times More Effective Than Regular Erythropoietin in Neuroprotection in a Neonatal Rat Model of Hypoxia and Ischemia显示文摘 | Han Chen Frédéric Spagnoli Michael Burris William B. Rolland Adriel Fajilan Huanyu Dou Jiping Tang John H. Zhang | 2012 | Stroke2012，，3： | 1 |
| 12 | FungalTraits:a user-friendly traits database of fungi and fungus-like stramenopiles显示文摘The cryptic lifestyle of most fungi necessitates molecular identification of the guild in environmental studies.Over the past decades,rapid development and affordability of molecular tools have tremendously improved insights of the fungal diversity in all ecosystems and habitats.Yet,in spite of the progress of molecular methods,knowledge about functional properties of the fungal taxa is vague and interpretation of environmental studies in an ecologically meaningful manner remains challenging.In order to facilitate functional assignments and ecological interpretation of environmental studies we introduce a user friendly traits and character database FungalTraits operating at genus and species hypothesis levels.Combining the information from previous efforts such as FUNGuild and FunFun together with involvement of expert knowledge,we reannotated 10,210 and 151 fungal and Stramenopila genera,respectively.This resulted in a stand-alone spreadsheet dataset covering 17 lifestyle related traits of fungal and Stramenopila genera,designed for rapid functional assignments of environmental stud-ies.In order to assign the trait states to fungal species hypotheses,the scientific community of experts manually categorised and assigned available trait information to 697,413 fungal ITS sequences.On the basis of those sequences we were able to summarise trait and host information into 92,623 fungal species hypotheses at 1%dissimilarity threshold. | Sergei Põlme Kessy Abarenkov RHenrik Nilsson Björn D.Lindahl Karina Engelbrecht Clemmensen Havard Kauserud Nhu Nguyen Rasmus Kjøller Scott T.Bates Petr Baldrian Tobias Guldberg Frøslev Kristjan Adojaan Alfredo Vizzini Ave Suija Donald Pfister Hans-Otto Baral Helle Järv Hugo Madrid Jenni Nordén Jian-Kui Liu Julia Pawlowska Kadri Põldmaa Kadri Pärtel Kadri Runnel Karen Hansen Karl-Henrik Larsson Kevin David Hyde Marcelo Sandoval-Denis Matthew E.Smith Merje Toome-Heller Nalin N.Wijayawardene Nelson Menolli Jr Nicole K.Reynolds Rein Drenkhan Sajeewa S.N.Maharachchikumbura Tatiana B.Gibertoni Thomas Læssøe William Davis Yuri Tokarev Adriana Corrales Adriene Mayra Soares Ahto Agan Alexandre Reis Machado Andrés Argüelles-Moyao Andrew Detheridge Angelina de Meiras-Ottoni Annemieke Verbeken Arun Kumar Dutta Bao-Kai Cui C.K.Pradeep César Marín Daniel Stanton Daniyal Gohar Dhanushka N.Wanasinghe Eveli Otsing Farzad Aslani Gareth W.Griffith Thorsten H.Lumbsch Hans-Peter Grossart Hossein Masigol Ina Timling Inga Hiiesalu Jane Oja John Y.Kupagme József Geml Julieta Alvarez-Manjarrez Kai Ilves Kaire Loit Kalev Adamson Kazuhide Nara Kati Küngas Keilor Rojas-Jimenez Krišs Bitenieks Laszlo Irinyi LászlóGNagy Liina Soonvald Li-Wei Zhou Lysett Wagner M.Catherine Aime MaarjaÖpik María Isabel Mujica Martin Metsoja Martin Ryberg Martti Vasar Masao Murata Matthew PNelsen Michelle Cleary Milan C.Samarakoon Mingkwan Doilom Mohammad Bahram Niloufar Hagh-Doust Olesya Dulya Peter Johnston Petr Kohout Qian Chen Qing Tian Rajasree Nandi Rasekh Amiri Rekhani Hansika Perera Renata dos Santos Chikowski Renato L.Mendes-Alvarenga Roberto Garibay-Orijel Robin Gielen Rungtiwa Phookamsak Ruvishika S.Jayawardena Saleh Rahimlou Samantha C.Karunarathna Saowaluck Tibpromma Shawn P.Brown Siim-Kaarel Sepp Sunil Mundra Zhu-Hua Luo Tanay Bose Tanel Vahter Tarquin Netherway Teng Yang Tom May Torda Varga Wei Li Victor Rafael Matos Coimbra Virton Rodrigo Targino de Oliveira Vitor Xavier de Lima Vladimir S.Mikryukov Yongzhong Lu Yosuke Matsuda Yumiko Miyamoto Urmas Kõljalg Leho Tedersoo | 2020 | Fungal Diversity2020，，6： | 1 |
| 13 | Cellular and molecular toxicity of lead in bone显示文摘 | Jeol GP Gregory JL John FR | 1991 | Environ Health Perspect1991，91，： | 1 |
| 14 | Comparison of esophagogastric junction distensibility changes during POEM and Heller myotomy using intraoperative FLIP显示文摘 | Ezra N. Teitelbaum Lubomyr Boris Fahd O. Arafat Frédéric Nicodème Zhiyue Lin Peter J. Kahrilas John E. Pandolfino Nathaniel J. Soper Eric S. Hungness | 2013 | Surgical Endoscopy2013，，12： | 1 |
| 15 | Does safe dosing of iodinated contrast prevent contrast-induced acute kidney inju- ry? 显示文摘 | Jeremiah RB John FR Clay AB | 2010 | Cire Cardiovasc Interv2010，3，： | 1 |
| 16 | Esophageal Distensibility as a Measure of Disease Severity in Patients with Eosinophilic Esophagitis显示文摘 | Frédéric Nicodème Ikuo Hirano Joan Chen Kenika Robinson Zhiyue Lin Yinglian Xiao Nirmala Gonsalves Mary J. Kwasny Peter J. Kahrilas John E. Pandolfino | 2013 | Clinical Gastroenterology and Hepatology2013，，： | 1 |
| 17 | Evaluations of color representation for maize images显示文摘 | Irfan SA and John FR | 1996 | Journal of Agricultural Engineering Research1996，63，： | 1 |
| 18 | PON2gene variants are associated with clinical manifestations of cardiovascular disease in familial hypercholesterolemia patients显示文摘 | Leus FR Zwart M John JP | 2001 | Atherosclerosis2001，154，： | 1 |
| 19 | The use of a triangular pedicle flap for oral commisuroplasty:report of a case显示文摘 | Johns FR Sandler NA Ochs MW | 1998 | Oral Maxillofac Surg1998，56，2： | 1 |
| 20 | Changes in facial movem entafter maxillary osteotomies 显示文摘 | Johns FR Johnson PC Buckley MJ | 1997 | Oral Maxillofacial Surg1997，55，10： | 1 |
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