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Ray Wu,as remembered by a former student

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Science China(Life Sciences) 2009年第2期52卷 108-110页

作者： jack Szostak an Investigator of the Howard Hughes Medical Institute

Some 35 years ago, I had the good fortune to be ac-cepted into Ray Wu’s lab as a graduate student. Ray was already well known for his pioneering studies in DNA se-quencing, and his lab was quietly humming with the ex-citement of the new approaches being developed for DNA labeling, sequencing and synthesis. Looking back, I am somewhat surprised that Ray accepted me into his lab-I

关键词： Ray Wu,as remembered by a former student DNA

The globalization of messenger RNA regulation

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National Science Review 2014年第2期1卷 184-186页

作者： jack D.Keene Department of Molecular Genetics & Microbiology Duke University Medical Center

Transcriptional regulation has been a dominant area of research in gene expression for more than 50 ***,the past 20 years of research in biology brought new focus on posttranscriptional events,namely RNA *** emphasis on understanding the regulatory functions of RNAs emerged with the identiication of cis-and trans-regulatory regions in

关键词： The globalization of messenger RNA regulation RNA

Metal-insulator-semiconductor(MIS) photoelectrodes: distance improves performance

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National Science Review 2021年第8期8卷 7-8页

作者： Joshua jack Zhiyong Jason Ren Department of Civil and Environmental Engineering and the Andlinger Center for Energy and the Environment Princeton University

Hydrogen（H2） is a clean energy carrier with enormous potential to support deep decarbonization towards net-zero and a circular carbon economy. However, H2production itself can be carbon and energy intensive, as 96% of global H2synthesis is currently conducted via thermochemical processes such as steam reforming and coal gasification that rely on fossil fuels [1].

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ITERATIVE l1 MINIMIZATION FOR NON-CONVEX COMPRESSED SENSING

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Journal of Computational Mathematics 2017年第4期35卷 439-451页

作者： Penghang Yin jack Xin Department of Mathematics University of California Los Angeles CA 90095 USA Department of Mathematics University of California Irvine CA 92697 USA

An algorithmic framework, based on the difference of convex functions algorithm （D- CA）, is proposed for minimizing a class of concave sparse metrics for compressed sensing problems. The resulting algorithm iterates a sequence ofl1 minimization problems. An exact sparse recovery theory is established to show that the proposed framework always improves on the basis pursuit （l1 minimization） and inherits robustness from it. Numerical examples on success rates of sparse solution recovery illustrate further that, unlike most existing non-convex compressed sensing solvers in the literature, our method always out- performs basis pursuit, no matter how ill-conditioned the measurement matrix is. Moreover, the iterative l1 （ILl） algorithm lead by a wide margin the state-of-the-art algorithms on l1/2 and logarithimic minimizations in the strongly coherent （highly ill-conditioned） regime, despite the same objective functions. Last but not least, in the application of magnetic resonance imaging （MRI）, IL1 algorithm easily recovers the phantom image with just 7 line projections.

关键词： Compressed sensing Non-convexity Difference of convex functions algorithm,Iterative l1 minimization.

Problems on Graphs with Fixed Smallest Eigenvalue

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Algebra Colloquium 2020年第1期27卷 51-54页

作者： jack Koolen Qianqian Yang Wen-Tsun Wu Key Laboratory of CAS School of Mathematical Sciences University of Science and Technology of ChinaHefei 230026China School of Mathematical Sciences University of Science and Technology of China Hefei 230026China

In this note we give several problems and conjectures on graphs with fixed smallest eigenvalue.

关键词： 5-integrability lattice graph

Twice Q-polynomial distance-regular graphs of diameter 4

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Science China Mathematics 2015年第12期58卷 2683-2690页

作者： MA JianMin KOOLEN jack H. College of Mathematics & Information Science and Hebei Key Lab of Computational Mathematics & Applications Hebei Normal University School of Mathematical Sciences University of Science and Technology of China

It is known that a distance-regular graph with valency k at least three admits at most two Qpolynomial structures. We show that all distance-regular graphs with diameter four and valency at least three admitting two Q-polynomial structures are either dual bipartite or almost dual bipartite. By the work of Dickie(1995) this implies that any distance-regular graph with diameter d at least four and valency at least three admitting two Q-polynomial structures is, provided it is not a Hadamard graph, either the cube H(d, 2)with d even, the half cube 1/2H(2d + 1, 2), the folded cube?H(2d + 1, 2), or the dual polar graph on [2A2d-1(q)]with q 2 a prime power.

关键词： distance-regular graph P-or Q-polynomial structure tight

The Flight Dynamics of Tapejara,a Pterosaur From the Early Cretaceous of Brazil with a Large Cranial Crest

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Acta Geologica Sinica(English Edition) 2012年第6期86卷 1377-1388页

作者： Sankar CHATTERJEE R.jack TEMPLIN Department of Geosciences Museum of Texas Tech University Aerodynamic Laboratory National Research Council

Tapejara wellnhoferi, a small azhdarchoid pterodactyloid from the Early Cretaceous Santana Formation of Brazil, provides critical information about the aerodynamic function of its spectacular head crest. The cranial crests in pterodactyloids were sexually dimorphic and are thought to have evolved in adult males in response to female mate choice. However, the location of cranial crests in front of the center of gravity would create instability in the yaw axis during flight and may seem like a handicap. Vertically aligned webbed feet probably suppressed the yawing rotations and instability from the crest. Here we show that the crest functioned as a front rudder to make agile turn and mediate flight control. A computer simulation model suggests that Tapejara had a large excess of muscle power available above the power required for continuous flapping flight. It could easily takeoff from a perch, ground, or water surface and land safely on the ground. It was an excellent glider with a gliding angle close to 4~ and a cruising speed of 27 km/h. Tapejara could soar efficiently on the windward side of cliffs or circle on rising thermals over tropical waters for efficient long-distance flight. Various control surfaces in the wings of Tapejara analogous to the slat, aileron, elevator, fin, rudder, and horizontal stabilizer of an aircraft made pterodactyloids versatile flyers.

关键词： Tapejara Cretaceous pterodactyloids cranial crest flight Brazil

Transplacental induction of fatty acid oxidation in term fetal pigs by the peroxisome proliferator-activated receptor alpha agonist clofibrate

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Journal of Animal Science and Biotechnology 2016年第3期7卷 341-352页

作者： Xi Lin Sheila Jacobi jack Odle Laboratory of Developmental Nutrition Department of Animal SciencesNorth Carolina State University

Background： To induce peroxisomal proliferator-activated receptor α（PPARα） expression and increase milk fat utilization in pigs at birth, the effect of maternal feeding of the PPARα agonist, clofibrate（2-（4-chlorophenoxy）-2-methyl-propanoic acid, ethyl ester）, on fatty acid oxidation was examined at ful-term delivery（0 h） and 24 h after delivery in this *** group of pigs（n = 10） was delivered from pregnant sows fed a commercial diet with or without 0.8% clofibrate for the last 7 d of gestation. Blood samples were col ected from the utero-ovarian artery of the sows and the umbilical cords of the pigs as they were removed from the sows by C-section on day 113 of ***： HPLC analysis identified that clofibric acid was present in the plasma of the clofibrate-fed sow（~4.2 μg/m L）and its offspring（~1.5 μg/m L）. Furthermore, the maternal-fed clofibrate had no impact on the liver weight of the pigs at 0 h and 24 h, but hepatic fatty acid oxidation examined in fresh homogenates showed that clofibrate increased（P 〈 0.01）^14C-accumulation in CO2 and acid soluble products 2.9-fold from [1-^14C]-oleic acid and 1.6-fold from[1-^14C]-lignoceric acid respectively. Correspondingly, clofibrate increased fetal hepatic carnitine palmitoyltransferase（CPT）and acyl-Co A oxidase（ACO） activities by 36% and 42% over controls（P 〈 0.036）. The m RNA abundance of CPT I was 20-fold higher in pigs exposed to clofibrate（P 〈 0.0001） but no differences were detected for ACO and PPARα m RNA between the two ***： These data demonstrate that dietary clofibrate is absorbed by the sow, crosses the placental membrane, and enters fetal circulation to induce hepatic fatty acid oxidation by increasing the CPT and ACO activities of the newborn.

关键词： Clofibrate Fatty acid oxidation Pigs Placenta transfer

Woody plant cell walls:Fundamentals and utilization

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Molecular Plant 2024年第1期17卷 112-140页

作者： Wei Li Ying-Chung Jimmy Lin Ying-Lan Chen Chenguang Zhou Shuang Li Nette De Ridder Dyoni M.Oliveira Lanjun Zhange Baocai Zhang jack P.Wang Changzheng Xu Xiaokang Fu Keming Luo Ai-Min Wu Taku Demura Meng-Zhu Lu Yihua Zhou Laigeng Li Toshiaki Umezawa Wout Boerjan Vincent L.Chiang State Key Laboratory of Tree Genetics and Breeding Northeast Forestry UniversityHarbin 150040China Department of Life Science National Taiwan UniversityTaipeiTaiwanChina Department of Biotechnology and Bioindustry Sciences College of Bioscience and BiotechnologyNational Cheng Kung UniversityTainanTaiwanChina Department of Plant Biotechnology and Bioinformatics Ghent UniversityTechnologiepark 719052 GhentBelgium VIB Center for Plant Systems Biology Technologiepark 719052 GhentBelgium State Key Laboratory of Plant Genomics Insttute of Genetics and Developmental Biology Chinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China Forest Biotechnology Group Department of Forestry and Environmental ResourcesNorth Carolina State UniversityRaleighNC 27695USA Chongqing Key Laboratory of Plant Resource Conservation and Germplasm Innovation Integrative Science Center of Germplasm CreationSchool of Life SciencesSouthwest UniversityChongqing 400715China Guangdong Key Laboratory for Innovative Developmentand Utilization of Forest Plant Germplasm College of Forestry and Landscape ArchitecturesSouth China Agricultural UniversityGuangzhou510642China Center for Digital Green-innovation Nara Institute of Science and TechnologykomaNara 630-0192Japan State Key Laboratory of Subtropical Siviculture College of Forestry and BiotechnologyZhejang A&F UniversityHangzhou 311300China CAS Center for Excellence in Molecular Plant Sciences Chinese Academy of Sciences300 Fenglin RoadShanghai 200032China Laboratoryof MetabolicScienceofForest Plants and Microorganisms Rsearch Institute for Sustainable HumanosphereKyoto UniversityUjiKyoto 611-0011 Japan

Cell walls in plants,particularly forest trees,are the major carbon sink of the terrestrial *** and biosynthetic features of plant cell walls were revealed early on,focusing mostly on herbaceous model *** developments in genomics,transcriptomics,epigenomics,transgenesis,and associated analytical techniques are enabling novel insights into formation of woody cell ***,we review multilevel regulation of cell wall biosynthesis in forest tree *** highlight current approaches to engineering cell walls as potential feedstock for materials and energy and survey reported field tests of such engineered transgenic *** outline opportunities and challenges in future research to better understand cell type biogenesis for more efficient wood cell wall modification and utilization for biomaterials or for enhanced carbon capture and storage.

关键词： regulation of cell wall formation biosynthesis of cell wall components lignin cellulose hemicellulose cell wall utilization