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Blast waveform tailoring using controlled venting in blast simulators and shock tubes

Defence Technology（防务技术） 2024年第7期37卷 14-26页

作者： edward chern jinn gan Alex Remennikov David Ritzel Faculty of Engineering and Information Sciences University of WollongongWollongongNSW2522Australia Dyn-FX Consulting Ltd 19 Laird Ave NorthAmherstburgONN9V 2T5Canada

A critical challenge of any blast simulation facility is in producing the widest possible pressure-impulse range for matching against equivalent high-explosive *** tubes and blast simulators are often constrained with the lack of effective ways to control blast wave profiles and as a result have a limited performance *** wave shaping techniques employed in some facilities are reviewed but often necessitate extensive geometric modifications,inadvertently cause flow anomalies,and/or are only applicable under very specific *** paper investigates controlled venting as an expedient way for waveforms to be tuned without requiring extensive modifications to the driver or existing geometry and could be widely applied by existing and future blast simulation and shock tube *** use of controlled venting is demonstrated experimentally using the Advanced Blast Simulator(shock tube)at the Australian National Facility of Physical Blast Simulation and via numerical flow simulations with Computational Fluid *** venting is determined as an effective method for mitigating the impact of re-reflected waves within the blast *** control method also allows for the adjustment of parameters such as tuning the peak overpressure,the positive phase duration,and modifying the magnitude of the negative phase and the secondary shock of the blast *** paper is concluded with an illustration of the potential expanded performance range of the Australian blast simulation facility when controlled venting for blast waveform tailoring as presented in this paper is applied.

关键词： Advanced blast simulator Shock wave propagation Far-field explosion Blast loads Blast waves Computational fluid dynamics

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Blast waveform tailoring using controlled venting in blast simulators and shock tubes

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Defence technology 2024年第7期 14页

作者： edward chern jinn gan Alex Remennikov David Ritzel

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Regulatory RNAs,microRNA,long-non coding RNA and circular RNA roles in colorectal cancer stem cells

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World Journal of Gastrointestinal Oncology 2022年第4期14卷 748-764页

作者： Hsiao-Mei Chao Teh-Wei Wang edward chern Shan-hui Hsu Department of Pathology Wan Fang HospitalTaipei Medical UniversityTaipei 11696Taiwan Department of Pathology School of MedicineCollege of MedicineTaipei Medical UniversityTaipei 110Taiwan niChe Lab for Stem Cell and Regenerative Medicine Department of Biochemical Science and TechnologyNational Taiwan UniversityTaipei 10617Taiwan Institute of Polymer Science and Engineering National Taiwan UniversityTaipei 10617Taiwan

The properties of cancer stem cells(CSCs),such as self-renewal,drug resistance,and metastasis,have been indicated to be responsible for the poor prognosis of patients with colon *** epigenetic regulatory network plays a crucial role in CSC *** non-coding RNA(ncRNA),including microRNAs,long noncoding RNAs,and circular RNAs,have an important influence on cell *** modulate cells by regulating gene expression in different *** review discusses the basic characteristics and the physiological functions of colorectal cancer(CRC)stem *** of these ncRNAs will help us understand the pathological mechanism of CRC progression,and they could become a new target for cancer treatment.

关键词： Regulatory RNAs MicroRNA Long-non coding RNA Circular RNA Colorectal cancer Cancer stem cell Stemness

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The Structure of Vector Bundles on Non-primary Hopf Manifolds

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Chinese Annals of Mathematics,Series B 2020年第6期41卷 929-938页

作者： Ning gan Xiangyu ZHOU School of Sciences Jimei Uni vers计yXiamen 361021FujianChina Institute of Mathematics Academy of Mathematics and Systems ScienceChinese Academy of SciencesBeijing 100190China

Let X be a Hopf manifold with non-Abelian fundamental group and E be a holomorphic vector bundle over X,with trivial pull-back to C^n-{0}.The authors show that there exists a line bundle L over X such that E■L has a ... 详细信息

Let X be a Hopf manifold with non-Abelian fundamental group and E be a holomorphic vector bundle over X,with trivial pull-back to C^n-chern.The authors show that there exists a line bundle L over X such that E■L has a nowhere vanishing *** is proved that in case dim(X)≥3,π*(E)is trivial if and only if E is filtrable by vector *** the structure theorem,the authors get the cohomology dimension of holomorphic bundle E over X with trivial pull-back and the vanishing of chern class of E.

关键词： Hopf manifolds Holomorphic vector bundles Exact sequence Cohomology Filtration chern class

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Dissect the rice immune system using a whole-genome sequenced mutant population

Dissect the rice immune system using a whole-genome sequence...

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中国植物病理学会2019年学术年会

作者： Li Guotian Sha gan Jain Rashmi Jenkins Jerry Shu Shengqiang chern Mawsheng Copetti Dario Xing Feng Xie Weibo Wing Rod A Schmutz Jeremy Ronald Pamela C State Key Laboratory of Agricultural Microbiology and College of Plant Science and Technology Huazhong Agricultural University Department of Plant Pathology University of California Joint BioEnergy Institute Lawrence Berkeley National Laboratory U.S.Department of Energy Joint Genome Institute Arizona Genomics Institute School of Plant SciencesUniversity of Arizona National Key Laboratory of Crop Genetic Improvement National Center of Plant Gene ResearchHuazhong Agricultural University HudsonAlpha Institute for Biotechnology

Rice provides food for more than half of the world’s population and also serves as a model for studies of other monocotyledonous ***,we report the de novo genome sequencing and analysis of an early flowering Geng/japonica variety KitaakeX,which completes its life cycle in 9 *** KitaakeX sequence assembly contains 377.6 Mb,consisting of 33 scaffolds（476 contigs） with a contig N50 of 1.4 *** the assembly are detailed gene annotations of 35 594 protein coding *** high-quality genome of the model rice plant KitaakeX will accelerate rice functional *** further facilitate rice research,we generated and sequenced a fast-neutron-induced mutant population in *** sequenced 1 504 mutant lines at 45-fold coverage and identified 91 513 mutations affecting 32 307 genes,i.e.,58% of all rice *** detected an average of 61 mutations per *** types include single-base substitutions,deletions,insertions,inversions,translocations,and tandem *** observed a high proportion of loss-of-function *** facilitate public access to this genetic resource,we established an open access database called KitBase that provides access to sequence data and seed *** have screened this mutant population for lines altered in plant immunity and identified multiple mutant *** on these mutants will be presented.

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An Algan/gan HEMT with a reduced surface electric field and an improved breakdown voltage

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Chinese Physics B 2012年第8期21卷 360-364页

作者：谢刚 edward Xu Niloufar Hashemi 张波 Fred Y.Fu Wai Tung Ng The edward S.Rogers Sr.Electrical and Computer Engineering Department University of Toronto State key Laboratory of Electronic Thin Films and Integrated Devices University of Electronic Science and Technology of China Crosslight Software Inc.Burnaby BCCanada

A reduced surface electric field in an Algan/gan high electron mobility transistor （HEMT） is investigated by employing a localized Mg-doped layer under the two-dimensional electron gas （2-DEG） channel as an electric field shaping layer. The electric field strength around the gate edge is effectively relieved and the surface electric field is distributed evenly as compared with those of HEMTs with conventional source-connected field plate and double field plate structures with the same device physical dimensions. Compared with the HEMTs with conventional sourceconnected field plates and double field plates, the HEMT with a Mg-doped layer also shows that the breakdown location shifts from the surface of the gate edge to the bulk Mg-doped layer edge. By optimizing both the length of Mg-doped layer, Lm, and the doping concentration, a 5.5 times and 3 times the reduction in the peak electric field near the drain side gate edge is observed as compared with those of the HEMTs with source-connected field plate structure and double field plate structure, respectively. In a device with VGS = -5 V, Lm 1.5 m, a peak Mg doping concentration of 8×10^17 cm-3 and a drift region length of 10 m, the breakdown voltage is observed to increase from 560 V in a conventional device without field plate structure to over 900 V without any area overhead penalty.

关键词： Algan/gan HEMT reduced surface electric field Mg-doped layer breakdown voltage

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Application of gan in Hard-switching Converters:Challenges and Potential Solutions

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电力电子技术 2017年第9期51卷 3-11页

作者： Bo LIU Zhe-yu ZHANG edward Jones Fei(Fred) WANG University of Tennessee

This paper overviews the benefits,challenges,research trends and potential solutions on the design and application of gallium nitride(gan) technology in hard-switching power electronic converters from the device level... 详细信息

关键词：氮化镓功率电子变换器电子技术

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Hopf流形上全纯向量丛的数字特征

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厦门大学学报（自然科学版） 2021年第1期60卷 63-66页

作者：甘宁集美大学理学院福建厦门361021

计算了任意的Hopf流形上的Betti数,并给出了Hopf流形上全纯向量丛的Euler示性数与其向量丛陈类的关系式.最后作为应用,证明了Hopf流形上秩为3的可滤的全纯向量丛的Euler示性数为0.

关键词： Hopf流形向量丛 Euler示性数陈类

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Patterns of genomic and phenomic diversity in wine and table grapes

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Horticulture Research 2017年第1期4卷 181-191页

作者： ZoëMigicovsky Jason Sawler Kyle M Gardner Mallikarjuna K Aradhya Bernard H Prins Heidi R Schwaninger Carlos D Bustamante edward S Buckler gan-Yuan Zhong Patrick J Brown Sean Myles Department of Plant Food and Environmental SciencesFaculty of AgricultureDalhousie UniversityTruroB2N 5E3NSCanada Anandia Labs VancouverV6T 1Z4BCCanada Agriculture and Agri-Food Canada Fredericton Research and Development CentreFrederictonE3B 4Z7NBCanada United States Department of Agriculture-Agricultural Research Service National Clonal Germplasm RepositoryUniversity of CaliforniaDavis95616CAUSA United States Department of Agriculture Agricultural Research ServiceGrape Genetics Research UnitNew York State Agricultural Experiment StationCornell UniversityGeneva14456NYUSA Department of Genetics Stanford UniversityStanfordCA 94305USA Department of Plant Breeding and Genetics Cornell UniversityIthaca14853NYUSA United States Department of Agriculture Agricultural Research ServicePlant Genetic Resources UnitNew York State Agricultural Experiment StationCornell UniversityGeneva14456NYUSA Department of Crop Science University of IllinoisUrbana61801ILUSA

Grapes are one of the most economically and culturally important crops worldwide,and they have been bred for both winemaking and fresh *** we evaluate patterns of diversity across 33 phenotypes collected over a 17-year period from 580 table and wine grape accessions that belong to one of the world’s largest grape gene banks,the grape germplasm collection of the United States Department of *** find that phenological events throughout the growing season are correlated,and quantify the marked difference in size between table and wine *** pairing publicly available historical phenotype data with genome-wide polymorphism data,we identify large effect loci controlling traits that have been targeted during domestication and breeding,including hermaphroditism,lighter skin pigmentation and muscat *** for larger berries in table grapes was traditionally concentrated in geographic regions where Islam predominates and alcohol was prohibited,whereas wine grapes retained the ancestral smaller size that is more desirable for winemaking in predominantly Christian *** uncover a novel locus with a suggestive association with berry size that harbors a signature of positive selection for larger *** results suggest that religious rules concerning alcohol consumption have had a marked impact on patterns of phenomic and genomic diversity in grapes.

关键词： harbor religious crops

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一般Hopf曲面上向量丛的结构

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数学年刊（A辑） 2011年第1期32卷 115-120页

作者：甘宁周向宇集美大学理学院福建厦门361021 中科院数学与系统科学研究院数学研究所北京100190 中科院华罗庚数学重点实验室北京100190

得到了非主Hopf曲面上连续复向量丛全纯结构的存在性及可滤性问题的充要条件.

关键词： Hopf曲面全纯向量丛可滤结构陈类

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