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Frontiers of Environmental Science & Engineering 2014年第5期8卷 703-709页

作者： qiao ZHANG yu HONG College of Environmental Science and Engineering Beijing Forestry University Beijing 100083 China

This study compared the growth and lipid accumulation properties of two oleaginous microalgae, namely, Scenedesmus sp. LX1 and Chlorella sp. HQ, under different nutrient conditions. Both algal species obtained the highest biomass, lipid content and lipid yield under low-nutrient conditions （mBGll medium）. The biomass, lipid content and lipid yield of Scenedesmus sp. LX1 were 0.42g·L^-1, 22.5% and 93.8mg·L^-1, respectively. These values were relatively higher than those of Chlorella sp. HQ （0.30g·L^-1, 17.1% and 51.3mg·L^-1, respectively）. These algae were then cultivated in an SE medium that contained more nutrients; as a result, the biomass and lipid yield of Scenedesmus sp. LX1 reduced more significantly than those of Chlorella sp. HQ. Opposite results were observed in lipid and triacylglycerols （TAGs） contents. The cell sizes of both algal species under low-nutrient conditions were larger than those under high-nutrient conditions. Chlorella sp. HQ cells did not aggregate, but Scenedesmus sp. LX1 cells flocculated easily, particularly under low-nutrient conditions. In summary, low-nutrient conditions favour the growth and lipid production of both algae, but Scenedesmus sp. LX1 outperforms Chlorella sp. HQ.

关键词： Scenedesmus sp. LX1 Chlorella sp. HQ,growth rate algal biomass lipid accumulation triacylgly-cerols (TAGs)

Joint 3D facial shape reconstruction and texture completion from a single image

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Computational Visual Media 2022年第2期8卷 239-256页

作者： Xiaoxing Zeng Zhelun Wu Xiaojiang Peng yu qiao Shenzhen Institute of Advanced Technology Chinese Academy of SciencesShenzhenChina University of Chinese Academy of Sciences BeijingChina

Recent years have witnessed significant progress in image-based 3D face reconstruction using deep convolutional neural ***,current reconstruction methods often perform improperly in self-occluded regions and can lead to inaccurate correspondences between a 2D input image and a 3D face template,hindering use in real *** address these problems,we propose a deep shape reconstruction and texture completion network,SRTC-Net,which jointly reconstructs 3D facial geometry and completes texture with correspondences from a single input face *** SRTC-Net,we leverage the geometric cues from completed 3D texture to reconstruct detailed structures of 3D *** SRTC-Net pipeline has three *** first introduces a correspondence network to identify pixel-wise correspondence between the input 2D image and a 3D template model,and transfers the input 2D image to a U-V texture *** we complete the invisible and occluded areas in the U-V texture map using an inpainting *** get the 3D facial geometries,we predict coarse shape(U-V position maps)from the segmented face from the correspondence network using a shape network,and then refine the 3D coarse shape by regressing the U-V displacement map from the completed U-V texture map in a pixel-to-pixel *** examine our methods on 3D reconstruction tasks as well as face frontalization and pose invariant face recognition tasks,using both in-the-lab datasets(MICC,MultiPIE)and in-the-wild datasets(CFP).The qualitative and quantitative results demonstrate the effectiveness of our methods on inferring 3D facial geometry and complete texture;they outperform or are comparable to the state-of-the-art.

关键词： 3D face reconstruction U-V completion pose invariant face recognition deep learning

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A new bibenzyl derivative from Pleione bulbocodioides

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Chinese Chemical Letters 2008年第5期19卷 559-561页

作者： Xin qiao Liu qiao yu yuan yuan Qiang Guo School of Chemical and Environmental Engineering Hubei University of Technology Wuhan 430068 China Department of Bioengineering Wuhan Institute of Technology Wuhan 430074 China Department of Pharmaceutical Sciences Nankai University Tianjin 300071 China

A new bibenzyl derivative 1, named 2-（4＇＇-hydroxybenzy1）-3-（3＇-hydroxyphenethy1）-5-methoxy-cyclohexa-2,5-diene-1,4- dione, and two known stilbenoids （2, 3） were isolated from the tubers of Pleione bulbocodioi... 详细信息

关键词： Pleione bulbocodioides Bibenzyl Stilbenoids Cytotoxity

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Towards robustness and generalization of point cloud representation:A geometry coding method and a large-scale object-level dataset

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Computational Visual Media 2024年第1期10卷 27-43页

作者： Mingye Xu Zhipeng Zhou Yali Wang yu qiao Guangdong-Hong Kong-Macao Joint Laboratory of Human-Machine Intelligence-Synergy Systems Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen518000China University of Chinese Academy of Sciences Beijing065001China Shanghai AI Laboratory Shanghai200001China SIAT Branch Shenzhen Institute of Artificial Intelligence and Robotics for SocietyShenzhen518000China Alibaba DAMO Academy Hangzhou242332China

Robustness and generalization are two challenging problems for learning point cloud *** tackle these problems,we first design a novel geometry coding model,which can effectively use an invariant eigengraph to group points with similar geometric information,even when such points are far from each *** also introduce a large-scale point cloud dataset,*** consists of 184 categories and 51,915 synthetic objects,which brings new challenges for point cloud classification,and provides a new benchmark to assess point cloud cross-domain ***,we perform extensive experiments on point cloud classification,using ModelNet40,ScanObjectNN,and our PCNet184,and segmentation,using ShapeNetPart and *** method achieves comparable performance to state-of-the-art methods on these datasets,for both supervised and unsupervised *** and our dataset are available at https://***/MingyeXu/PCNet184.

关键词： geometry coding self-supervised learning point cloud classification segmentation 3D analysis

XAF1 is frequently methylated in human esophageal cancer

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World Journal of Gastroenterology 2012年第22期18卷 2844-2849页

作者： Xiang-yu Chen qiao-yu He Ming-Zhou Guo Department of Gastroenterology The First Affiliated Hospital of Zhengzhou University Zheng-zhou 450052 Henan Province China Department of Gastroenterology and Hepatol-ogy Chinese PLA General Hospital 13eijing 100853 China

AIM： To explore epigenetic changes in the gene encod- ing X chromosome-linked inhibitor of apoptosis-associ- ated factor 1 （XAF1） during esophageal carcinogenesis. METHODS： Methylation status of XAF1 was detected by methylation-specific polymerase chain reaction （MSP） in four esophageal cancer cell lines （KYSE30, KYSE70, BICl and partially methylated in TE3 cell lines）, nine cases of normal mucosa, 72 cases of pri- mary esophageal cancer and matched adjacent tissue. XAF1 expression was examined by semi-quantitative reverse transcriptional polymerase chain reaction and Western blotting before and after treatment with 5-aza- deoxycytidine （5-aza-dc）, a demethylating agent. To investigate the correlation of XAF1 expression and methylation status in primary esophageal cancer, immu- nohistochemistry for XAF1 expression was performed in 32 cases of esophageal cancer and matched adjacent tissue. The association of methylation status and clini-copathological data was analyzed by logistic regression. RESULTS： MSP results were as follows： loss of XAF1 expression was found in three of four esophageal cell lines with promoter region hypermethylation （com- pletely methylated in KYSE30, KYSE70 and BIC1 cell lines and partially in TE3 cells）; all nine cases of normal esophageal mucosa were unmethylated; and 54/72 （75.00%） samples from patients with esophageal can- cer were methylated, and 25/72 （34.70%） matched adjacent tissues were methylated （75.00% vs 34,70%, z2 = 23.5840, P = 0.000）. mRNA level of XAF1 mea- sured with semi-quantitative reverse transcription poly- merase chain reaction was detectable only in TE3 cells, and no expression was detected in KYSE30, KYSE70 or BIC1 cells. Protein expression was not observed in KYSE30 cells by Western blotting before treatment with 5-aza-dc. After treatment, mRNA level of XAF1 was detectable in KYSE30, KYSE70 and BIC1 cells. Protein expression was detected in KYSE30 after treatment with 5-aza-dc. Immunohistochemistry was performed on 3

关键词： X chromosome-linked inhibitor of apoptosis-associated factor 1 Esophageal cancer Methylation Methylation-specific polymerase chain reaction Semi-quantitative reverse transcriptional polymerase chainreaction

Isolation of microsatellite loci and reliable genotyping using noninvasive samples of a critically endangered primate, Trachypithecus leucocephalus

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Integrative Zoology 2016年第4期11卷 250-262页

作者： Weiran WANG yu qiao Yitao ZHENG Meng YAO School of Life Sciences Peking UniversityBeijingChina

Genetic information can be critical in identifying conservation priorities and developing conservation *** is an urgent need for noninvasive genetic tools to study the wild populations of Asian colobine *** majority of these species are threatened with habitat destruction,population reduction and even extinction,but generally lack information on their genetic diversity and population *** sampling and tissue collection have been scarce in these species owing to strict regulations on manipulation of endangered species,and the difficulties and risks associated with capturing these arboreal and fast-moving monkeys in the challenging environments that they *** difficulties have hindered the development of molecular genetic markers,which are usually derived from tissues or *** this study,we present a method for de novo microsatellite isolation and genotyping using DNA from noninvasive origins of a critically endangered Asian colobine,the white-headed langur(Trachypithecus leucocephalus).Genomic DNA isolated from hair was shown to be sufficient for microsatellite enrichment and isolation,with similar isolation efficiencies as from tissue *** identified and characterized 20 polymorphic microsatellite loci,and evaluated their amplification success and genotyping reliability with 86 field-collected fecal *** results show that this panel of loci can produce reliable genotypes from fecal samples,and represent a useful tool for noninvasive investigation of genetic structure,individual identification and kinship assessment in this highly endangered *** approach can be applied to conservation genetic studies of other wild species that lack sequence information and tissue samples.

关键词： Asian colobine conservation genetics FIASCO hair scatology

Change Rules of Γ_2 Particles in Hot-dipped Zn-Ti Coating

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Journal of Iron and Steel Research International 2014年第3期21卷 396-402页

作者： Yan GUI qiao-yu XU Yan-ling GUO Guangzhou Panyu Polytechnic South China University of Technology

Hot-dip Zn-Ti galvanizing can restrain the excess growth of the coating which has better corrosion resist- ances than hot-dip pure Zn. The change rules of Г2 intermetallic compound in hot-dip Zn-Ti galvanizing is investiga ted by immersion time, titanium content and the slag test using scanning electron microscopy （SEM）, energy dis- persive spectroscopy （EDS） and X-ray diffraction （XRD）. And the mechanism of nucleation and growth of Г2 inter- metallic compound is analysed. The results show that, when adding 0. 05mass% titanium to the zinc bath, the Г2 particles form in the η layer, which nucleate by obtaining Ti atoms from the phase and Fe atoms from the dissol- ving ζ phase layer. Moreover, the more titanium is added into the bath, the more and bigger Гz particles appear. The Fz particles in the coatings grow up noticeably with prolonging the immersion time.

关键词： hot-dip galvanizing Zn-Ti alloy bath Г2 phase particle

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Two-dimensional precise figuring of 500 mm-long X-ray mirror using one-dimensional ion beam system

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Advances in Manufacturing 2024年第1期12卷 177-184页

作者： Qiu-Shi Huang Han-Dan Huang qiao-yu Wu Jun yu Zhong Zhang Zhan-Shan Wang MOE Key Laboratory of Advanced Micro-Structured Materials Institute of Precision Optical Engineering(IPOE)School of Physics Science and EngineeringTongji UniversityShanghai200092People’s Republic of China Shanghai Professional Technical Service Platform for Full-Spectrum and High-Performance Optical Thin Film Devices and Applications Tongji UniversityShanghai200092People’s Republic of China Shanghai Frontiers Science Center of Digital Optics Tongji UniversityShanghai200092People’s Republic of China

In this study,a new method was developed to realize two-dimensional(2D)figure correction of grazing-incidence X-ray mirrors using a one-dimensional(1D)ion-beam figuring system.A mask of holes was specifically designed to generate removal functions at different widths and extend the figuring capability over a wide ***,a long mirror could be *** this method,the surface height root-mean-square(RMS)error of the center area of 484 mm×16 mm was reduced from 11.49 nm to 2.01 nm,and the 1D meridional RMS error reached 1.0 *** proposed method exhibits high precision and cost effectiveness for production of long X-ray mirrors.

关键词： Long-size mirrors Ion beam figuring Two-dimensional figure correction Mask

A high-capacity cathode for rechargeable K-metal battery based on reversible superoxide-peroxide conversion

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National Science Review 2021年第10期8卷 33-41页

作者： yu qiao Han Deng Zhi Chang Xin Cao Huijun Yang Haoshen Zhou Energy Technology Research Institute National Institute of Advanced Industrial Science and Technology (AIST) Center of Energy Storage Materials &Technology College of Engineering and Applied SciencesJiangsu Key Laboratory of Artificial Functional MaterialsNational Laboratory of Solid State Microstructures and Collaborative Innovation Center of Advanced MicrostructuresNanjing University

As a promising low-cost energy storage device, the development of a rechargeable potassium-ion battery(KIB) is severely hindered by the limited capacity of cathode candidates. Regarded as an attractive capacity-boosting strategy, triggering the O-related anionic redox activity has not been achieved within a sealed KIB system. Herein, in contrast to the typical gaseous open K-Obattery(O/KOredox), we originally realize the reversible superoxide/peroxide(KO/KO) interconversion on a KO-based cathode. Controlled within a sealed cell environment, the irreversible Oevolution and electrolyte decomposition(induced by superoxide anion(O~-) formation) are effectively restrained. Rationally controlling the reversible depth-of-charge at 300 m Ah/g(based on the mass of KO), no obvious cell degradation can be observed during 900 cycles. Moreover, benefitting from electrolyte modification, the KO-based cathode is coupled with a limited amount of K-metal anode(merely 2.5 times excess),harvesting a K-metal full-cell with high energy efficiency(～90%) and long-term cycling stability(over 300 cycles).

关键词： electrochemistry rechargeable battery beyond Li-ion battery long-term cycle life high capacity cathode

Unadulterated carbon as robust multifunctional electrocatalyst for overall water splitting and oxygen transformation

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Nano Research 2020年第2期13卷 401-411页

作者： Fantao Kong yu qiao Chaoqi Zhang Xiaohong Fan Aiguo Kong Yongkui Shan School of Chemistry and Molecular Engineering East China Normal UniversityShanghai 200241China

Developing the highly efficient and durable non-precious metal electrocatalysts by taking advantage of inexpensive and abundant resources is of paramount importance for the widespread application of energy conversion and storage techniques such as fuel cells and metal-air ***,the sponge-like unadulterated carbontube-graphene complexes(D/G-CTs-1,000)with multifarious intrinsic defect active sites are fabricated by boric acid-hydrothermal and pyrolysis *** close contact or juncture between open nanotubes and few-layer graphene in D/G-CTs-1,000 constructs the hierarchical networks with plentifuchannels,the larger surface area and outstanding *** a result,the as-prepared D/G-CTs-1,000 electrocatalyst exhibits an excellent trifunctional electrocatalytic performance for oxygen reduction reaction(ORR),oxygen evolution reactior(OER)and hydrogen evolution reaction(HER).The primary Zn-air batteries and overall water splitting system using D/G-CTs-1,000 as the electrode materials delivers higher power density outperforming the advanced Pt/C-based batteries and the overall watersplitting performance comparable to those using the non-precious metal/carbon-based materials as *** work provides a universal and efficient synthetic strategy to produce the unadulterated carbons with high activity and long-time durability as trifunctional electrocatalysts and promote the widespread applications of metal-free electrocatalysts in sustainable energy conversior technology.

关键词： boric acid-splicing unadulterated carbon electrocatalysis rechargeable Zn-air battery overall water splitting