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Hiding on jagged karst pinnacles:A new microendemic genus and species of a limestone-dwelling agamid lizard(Squamata:Agamidae:Draconinae)from Khammouan Province,Laos

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Zoological Research 2023年第6期44卷 1039-1051页

作者： Saly Sitthivong peter Brakels Santi Xayyasith Nathanaël Maury Sabira Idiiatullina Parinya Pawangkhanant Kai Wang Tan van Nguyen Nikolay A.Poyarkov Faculty of Forestry National University of LaosVientiane 01170Lao PDR IUCN Laos PDR Vientiane 01160Lao PDR Faculty of Environmental Sciences National University of LaosVientiane 01170Lao PDR Chelonian Conservation Center Laos World Encyclopedia of HerpetofaunaVientiane 01000Lao PDR Department of Vertebrate Zoology Biological FacultyLomonosov Moscow State UniversityMoscow 119234Russia Rabbit in the Moon Foundation(RIM) SuanphuengRatchaburi 70180Thailand State Key Laboratory of Genetic Resources and Evolution Kunming Institute of ZoologyChinese Academy of SciencesKunmingYunnan 650223China Southeast Asia Biodiversity Research Institute Chinese Academy of SciencesYezinNay Pyi Taw 05282Myanmar Institute for Research and Training in Medicine Biology and PharmacyDuy Tan UniversityDa Nang 550000Vietnam College of Medicine&Pharmacy Duy Tan UniversityDa Nang 550000Vietnam Joint Russian-Vietnamese Tropical Research and Technological Center Nghia DoCau GiayHanoi 122000Vietnam

We describe a unique new species and genus of agamid lizard from the karstic massifs of Khammouan Province,central *** carsticola *** *** an elusive medium-sized lizard(maximum snout-vent length101 mm)specifically adapted to life on limestone rocks and *** assess the phylogenetic position of the new genus amongst other agamids,we generated DNA sequences from two mitochondrial gene fragments(16S rRNA and ND2)and three nuclear loci(BDNF,RAG1 and c-mos),with a final alignment comprising 7418 base pairs for 64 agamid *** analyses unambiguously place the new genus in the mainland Asia subfamily Draconinae,where it forms a clade sister to the genus Diploderma from East Asia and the northern part of Southeast ***,the new genus is distinguished from all other genera in Draconinae by possessing a notably swollen tail base with enlarged scales on its dorsal and ventral *** work provides further evidence that limestone regions of Indochina represent unique“arks of biodiversity”and harbor numerous relict *** date,Laodracon carsticola *** *** known from only two adult male specimens and its distribution seems to be restricted to a narrow limestone massif on the border of Khammouan and Bolikhamxai provinces of *** studies are required to understand its life history,distribution,and conservation status.

关键词： Biodiversity Endemism Indochina Karstic landscape Laodracon carsticola Phylogeny Southeast Asia Taxonomy

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Two-fluid modeling of Geldart A particles in gas-fluidized beds

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Particuology 2008年第6期6卷 540-548页

作者： M.A. van der Hoef J.A.M. Kuipers Faculty of Science & Technology University of Twente

We have investigated the effect of cohesion and drag models on the bed hydrodynamics of Geldart A particles based on the two-fluid （TF） model. For a high gas velocity U0 = 0.03 m/s, we found a transition from the homogeneous fluidization to bubbling fluidization with an increase of the coefficient C1, which is used to account for the contribution of cohesion to the excess compressibility. Thus cohesion can play a role in the bed expansion of Geldart A particles. Apart from cohesion, we have also investigated the influence of the drag models. When using the Wen and Yu drag correlation with an exponent n = 4.65, we find an under-prediction of the bed expansion at low gas velocities （U0 = 0.009 m/s）. When using a larger exponent （n = 9.6）, as reported in experimental studies of gas-fluidization, a much better agreement with the experimental bed expansion is obtained. These findings suggest that at low gas velocity, a scale-down of the commonly used drag model is required. On the other hand, a scale-up of the commonly used drag model is necessary at high gas velocity （U0 = 0.2 and 0.06 m/s）. We therefore conclude that scaling the drag force represent only an ad hoc way of repairing the deficiencies of the TF model, and that a far more detailed study is required into the origin of the failure of the TF model for simulating fluidized beds of fine powders.

关键词： Gas-fluidized bed Geldart A particles Two-fluid model Cohesive force Drag correlation

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Fractures around the shoulder in the skeletally immature:A scoping review

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世界骨科杂志:英文版 2023年第8期14卷 604-611页

作者： Tim Kraal peter AA Struijs Lisette C Langenberg Christiaan JA van Bergen Department of Orthopedic Surgery and Sports Medicine Amsterdam University Medical CentersAmsterdam 1105 AZNetherlands Department of Orthopedic Surgery NoordWest ZiekenhuisgroepAlkmaar 1815 JDNetherlands Department of Orthopedic Surgery and Sports Medicine Erasmus University Medical Center-Sophia Children’s HospitalRotterdam 3015 GDNetherlands Department of Orthopedic Surgery AmphiaBreda 4818 CKNetherlands

Fractures around the shoulder girdle in children are mainly caused by sports *** clavicle and the proximal humerus are most commonly *** the clavicle and the proximal humerus have a remarkable potential for remodeling,which is why most of these fractures in children can be treated ***,the key is to understand when a child benefits from surgical *** indications for surgery of these fractures are *** review focuses on the available evidence on the management of clavicle and proximal humerus fractures in *** only strict indications for surgery for diaphyseal clavicle fractures in children are open fractures,tenting of the skin with necrosis,associated neurovascular injury,or a floating *** is no evidence to argue for surgery of displaced clavicle fractures to prevent malunion since most malunions are *** the rare case of a symptomatic malunion of the clavicle in children,corrective osteosynthesis is a viable treatment *** proximal humerus fractures in children,treatment is dictated by the patient's age(and thus remodeling potential)and the amount of fracture *** ten years of age,even severely displaced fractures can be treated *** the age of 13 and onwards,surgery has better outcomes for severely displaced(Neer types III and IV)*** 10 and 13 years of age,the indications for surgical treatment are less clear,with varying cut-off values of angulation(30-60 degrees)or displacement(1/3–2/3 shaft width)in the current literature.

关键词： Clavicle fracture Proximal humerus fracture Pediatric Skeletally immature Children Shoulder

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Preface to Focused Issue on Discontinuous Galerkin Methods

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Communications on Applied Mathematics and Computation 2022年第1期4卷 1-2页

作者： Jan S.Hesthaven Jennifer Ryan Chi-Wang Shu Jaap van der Vegt Yan Xu Qiang Zhang Zhimin Zhang Ecole Polytechnique Federale de Lausanne(EPFL) 1015 LausanneSwitzerland Department of Applied Mathematics and Statistics Colorado School of MinesGoldenCO 80401USA Division of Applied Mathematics Brown UniversityProvidenceRI 02912USA Department of Applied Mathematics University of Twente7500AE EnschedeThe Netherlands School of Mathematical Sciences University of Science and Technology of ChinaHefei 230026AnhuiChina Department of Mathematics Nanjing UniversityNanjing 210093JiangsuChina Department of Mathematics Wayne State UniversityDetroitMI 48202USA

The discontinuous Galerkin(DG)method is a class of finite element methods using com-pletely discontinuous piecewise smooth functions(typically polynomials)as basis and test *** its inception in 1973[10],it has seen a sustained development,both in the computational mathematics community and in many scientific and engineering application *** DG methods have several advantages,such as its extreme flexibility in dealing with complex geometry and adaptive computation(both h-and p-adaptivities are easy to implement),extremely high parallel efficiency,good stability properties(energy and entropy stability has been established for DG methods in many situations),nice con-vergence and superconvergence properties,and capability to solve hyperbolic and convec-tion-dominated problems effectively.

关键词： discontinuous stability piecewise

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The histopathological spectrum of myocardial inflammation in relation to circumstance of death:a retrospective cohort study in clinical and forensic autopsies

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Forensic Sciences Research 2022年第2期7卷 238-246页

作者： Romy du Long Judith Fronczek Hans W.M.Niessen Allard C.van der Wal Hans H.de Boer Department of Pathology Amsterdam University Medical CenterUniversity of AmsterdamAmsterdamThe Netherlands Department of Forensic Medicine Netherlands Forensic InstituteThe HagueThe Netherlands

Interpreting a myocardial inflammation as causal,contributory or as of no significance at all in the cause of death can be challenging,especially in cases where other pathologic and/or medico-legal findings are also *** further evaluate the significance of myocardial inflammation as a cause of death we performed a retrospective cohort study of forensic and clinical autopsy *** revised the spectrum of histological inflammatory parameters in the myocardium of 79 adult autopsy cases and related these to the reported cause of *** slides were reviewed for the distribution and intensity of inflammatory cell infiltrations,the predominant inflammatory cell type,and the presence of inflammation-associated myocyte injury,fibrosis,edema and ***,the cases were divided over three groups,based on the reported cause of *** 1(n=27)consisted of all individuals with an obvious unnatural cause of *** 2(n=29)included all individuals in which myocarditis was interpreted to be one out of more possible causes of *** 3(n=23)consisted of all individuals in which myocarditis was reported to be the only significant finding at autopsy,and no other cause of death was *** application of our histological parameters showed that only a diffuse increase of inflammatory cells could discriminate between an incidental presence of inflammation(Group 1)or a potentially significant one(Groups 2 and 3).No other histological parameter showed significant differences between the *** results suggest that generally used histological parameters are often insufficient to differentiate an incidental myocarditis from a(potentially)significant one.

关键词： Forensic sciences myocarditis myocardial inflammation diagnosis forensic pathology cause of death autopsy pathology

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Drought sensitivity of beech on a shallow chalk soil in northeastern Germany - a comparative study

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Forest Ecosystems 2017年第1期4卷 45-54页

作者： Marieke van der Maaten-Theunissen Hanna Bummerstede Janette Iwanowski Tobias Scharnweber Martin Wilmking Ernst van der Maaten Institute of Botany and Landscape Ecology University of Greifswald Soldmannstr 15 17487 Greifswald Germany

Background： We compare the climate sensitivity of European beech （Fagus sylvatica L.） in two forest nature reserves in northeastern Germany. The one reserve, Schlossberg, is characterized by shallow chalk soils, whereas in the other reserve, EIdena, soils are deeper and more developed. Little is known about the drought sensitivity of beech on shallow chalk soils. Methods： We collected increment cores at both research sites and established climate-growth relationships. Inter- tree variability was assessed by employing linear mixed-effect models. Results： We expected to find distinctively higher drought sensitivity at Schlossberg due to limited water availability, but find only marginal differences in growth responses. At both sites, drought is the major climatic factor driving tree growth. Adaptations in tree architecture and an underestimation of the water holding capacity of shallow chalk soils are discussed as possible reasons for not finding more distinct climate responses. In analyzing climate-growth relationships, we specifically focused on growth responses of individual trees but observed only low inter-tree variability at both sites. Evident is a shift in climate response patterns from the first to the second half of the twentieth century with previous-year drought conditions becoming more important than current-year drought. This shift is discussed in relation to a warming trend over that same period, as well as possible trends in masting behavior of beech. Conclusion： The investigated beech trees on the shallow chalk soil are only slightly more drought sensitive than beech trees on the reference site with deeper and more developed soils.

关键词： Climate-growth relationships Dendroecology Inter-tree variability Temporal stability Drought stress

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Proteomics as a tool to gain next level insights into photo-crosslinkable biopolymer modifications

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Bioactive Materials 2022年第11期7卷 204-220页

作者： Nele Pien Fabrice Bray Tom Gheysens Liesbeth Tytgat Christian Rolando Diego Mantovani peter Dubruel Sandra van Vlierberghe Ghent University Polymer Chemistry and Biomaterials Research GroupCentre of Macromolecular Chemistry(CMaC)Krijgslaan 281 S4bis9000 GentBelgium Laval University Laboratory for Biomaterials and BioengineeringCRC-IPavillon PouliotQuebec G1V 0A6Canada Univ.Lille CNRSUSR 3290MSAPMiniaturisation pour la Synthese l’Analyse et la ProteomiqueF-59000LilleFrance

The distribution of photo-crosslinkable moieties onto a protein backbone can affect a biomaterial’s crosslinking behavior, and therefore also its mechanical and biological properties. A profound insight in this respect is essential for biomaterials exploited in tissue engineering and regenerative medicine. In the present work, photo-crosslinkable moieties have been introduced on the primary amine groups of: (i) a recombinant collagen peptide (RCPhC1) with a known amino acid (AA) sequence, and (ii) bovine skin collagen (COL BS) with an unknown AA sequence. The degree of substitution (DS) was quantified with two conventional techniques: an ortho-phthalic dialdehyde (OPA) assay and ^(1)H NMR spectroscopy. However, neither of both provides information on the exact type and location of the modified AAs. Therefore, for the first time, proteomic analysis was evaluated herein as a tool to identify functionalized AAs as well as the exact position of photo-crosslinkable moieties along the AA sequence, thereby enabling an in-depth, unprecedented characterization of functionalized photo-crosslinkable biopolymers. Moreover, our strategy enabled to visualize the spatial distribution of the modifications within the overall structure of the protein. Proteomics has proven to provide unprecedented insight in the distribution of photo-crosslinkable moieties along the protein backbone, undoubtedly contributing to superior functional biomaterial design to serve regenerative medicine.

关键词： (Photo-crosslinkable)biomaterials Chemical modifications Biomaterial characterization Proteomics Localization of functionalizations

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Automated ex-situ detection of pitting corrosion and its effect on the mechanical integrity of rare earth magnesium alloy-WE43

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Bioactive Materials 2022年第2期7卷 545-558页

作者： Kerstin van Gaalen Felix Gremse Felix Benn peter E.McHugh Alexander Kopp Ted J.Vaughan Biomechanics Research Centre(BioMEC) Biomedical EngineeringSchool of EngineeringCollege of Science and EngineeringNational University of Ireland GalwayGalwayIreland Meotec GmbH AachenGermany Institute for Experimental Molecular Imaging RWTH Aachen UniversityAachenGermany School of Mechanical and Aerospace Engineering Queen’s University BelfastBelfastUnited Kingdom

This study develops a three-dimensional automated detection framework(PitScan)that systematically evaluates the severity and phenomenology of pitting *** framework uses a python-based algorithm to analyse microcomputer-tomography scans(μCT)of cylindrical specimens undergoing *** approach systematically identifies several surface-based corrosion features,enabling full spatial characterisation of pitting parameters,including pit density,pit size,pit depth as well as pitting factor according to ASTM ***,it is used to evaluate pitting formation in tensile specimens of a Rare Earth Magnesium alloy undergoing corrosion,and relationships between key pitting parameters and mechanical performance are *** demonstrated that several of the parameters described in ASTM G46-94,including pit number,pit density and pitting factor,showed little correlation to mechanical ***,this study did identify that other parameters showed strong correlations with the ultimate tensile strength and these tended to be directly linked to the reduction of the cross-sectional area of the ***,our results indicate,that parameters directly linked to the loss of the cross-sectional area(*** material width),are parameters that are most suited to provide an indication of a specimen’s mechanical *** automated detection framework developed in this study has the potential to provide a basis to standardise measurements of pitting corrosion across a range of metals and future prediction of mechanical strength over degradation time.

关键词： Magnesium Corrosion Degradation Micro-computer-tomography Pit detection Automatization Mechanical integrity

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Mountain jade: A new high-elevation microendemic species of the genus Zhangixalus(Amphibia: Anura: Rhacophoridae)from Laos

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Zoological Research 2023年第2期44卷 374-379页

作者： peter Brakels Tan van Nguyen Parinya Pawangkhanant Sabira S.Idiiatullina Sengvilay Lorphengsy Chatmongkon Suwannapoom Nikolay A.Poyarkov IUCN Laos PDR Vientiane 01160Lao PDR Institute for Research and Training in Medicine Biology and PharmacyDuy Tan UniversityDa Nang 550000Vietnam Faculty of Medicine Duy Tan UniversityDa Nang 550000Vietnam Division of Fishery School of Agriculture and Natural ResourcesUniversity of PhayaoPhayaoThailand Department of Vertebrate Zoology Biological FacultyLomonosov Moscow State UniversityMoscow 119234Russia Biotechnology and Ecology Institute Ministry of Science and TechnologyVientiane 01000Lao PDR Joint Russian-Vietnamese Tropical Research and Technological Center Nghia DoCau GiayHanoi 122000Vietnam

DEAR EDITOR,We report on a new species, Zhangixalus melanoleucus ***., from Phou Samsoum Mountain(PSM) in Xiengkhouang Province, northeastern Laos, based on an integrative taxonomic approach, including morphological, molecular, and bioacoustic lines of evidence. Morphologically, the new species can be distinguished from its congeners by a combination of the following diagnostic characters: medium body size(SVL 34.4–36.3 mm in males, 53.7 mm in a single female);dorsum smooth and green;chest and belly lacking spots;flanks, axillae, ventral surfaces of forearms, inguinal.

关键词： northeastern Morphological spots

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Skewed superstatistical distributions from a Langevin and Fokker-Planck approach

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Chinese Science Bulletin 2011年第34期56卷 3633-3638页

作者： van der STRAETEN Erik BECK Christian Queen Mary University of London School of Mathematical Sciences

The superstatistics concept is a useful statistical method to describe inhomogeneous complex systems for which a system parameter βfluctuatesonalargespatio-temporal scale. Inthispaper weanalyze ameasuredtimeseriesofwindspeed fluctuationsandextract the superstatistical distribution function f(β) directly from the data. We construct suitable Langevin and Fokker-Planck models with a position dependent β-field and show that they reduce to standard type of superstatistics in the overdamped limit.

关键词：普朗克复杂系统统计方法时间尺度分布函数位置相关不均匀过阻尼

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