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Detection of large color variation in the potentially hazardous asteroid(297274) 1996 SK

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Research in Astronomy and Astrophysics 2014年第3期14卷 311-318页

作者： Chien-Hsien lin Wing-Huen Ip Zhong-yi lin Fumi Yoshida Yu-Chi Cheng Space Science Institute Macao University of Science and Technology Institute of Astronomy National Central University National Astronomical Observatory Osawa MitakaTokyo

Low-inclination near-earth asteroid （NEA）（297274） 1996 SK, which isalso classified as a potentially hazardous asteroid, has a highly eccentric orbit. Itwas studied by multi-wavelength photometry within the framework of an NEA colorsurvey at Lulin Observatory. Here, we report the finding of large color variationacross the surface of （297274） 1996 SK within one asteroidal rotation period of4.656 ± 0.122 hours and classify it as an S-type asteroid according to its averagecolors ofB - V = 0.767 ± 0.033, V - R = 0.482 ± 0.021, V - I = 0.801 ± 0.025and the corresponding relative reflectance spectrum. These results might be indica-tive of differential space weathering or compositional inhomogeneity in the surfacematerials.

关键词： minor planets, asteroids: individual: PHA (297274) techniques: photometric

Pseudomonas Cyclic Lipopeptide Medpeptin:Biosynthesis and Modulation of Plant Immunity

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Engineering 2023年第9期28卷 153-165页

作者： yi-lin Gu Jun-Zhou Li Yan Li Shen Cong Jing Wang yi-Nan Ma Hai-Lei Wei State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China Key Laboratory of Microbial Resources Collection and PreservationMinistry of Agriculture and Rural AffairsInstitute of Agricultural Resources and Regional PlanningChinese Academy of Agricultural SciencesBeijing 100081China Institute of Vegetables and Flowers Chinese Academy of Agricultural SciencesBeijing 100081China

The multifunctional secondary metabolites known as cyclic lipopeptides(CLPs),which are produced by a large variety of bacteria,have become a key category of plant immunity ***-CLPs(PsCLPs)are extremely diverse in structure and biological ***,an understanding of CLP-plant structure–function interactions currently remains ***,we identify medpeptin,a novel CLP from Pseudomonas mediterranea that consists of 22 amino *** is synthesized by a non-ribosomal peptide synthase(NRPS)gene cluster and regulated by a quorum-sensing *** research indicates that medpeptin does not exhibit antimicrobial activity;instead,it induces plant cell death immunity and confers resistance to bacterial *** transcriptome analysis and virus-induced gene silencing(VIGS)reveal a set of immune signaling candidates involved in medpeptin *** of a cell-wall leucine-rich repeat extensin protein(NbLRX3)or a receptor-like protein kinase(NbRLK25)—but not BAK1 or SGT1—compromises medpeptin-triggered cell death and resistance to pathogen infection in Nicotiana *** findings point to a noncanonical mechanism of CLP sensing and suggest perspectives for the development of plant disease resistance.

关键词： Pseudomonas Cyclic lipopeptide Cell death Leucine-rich repeat extension(LRX) Medpeptin Receptor-like kinase(RLK)

Free radicals trigger the closure of open pores in lignin-derived hard carbons toward improved sodium-storage capacity

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Journal of Energy Chemistry 2024年第7期94卷 551-559页

作者： Wen-Jun Ji Zong-lin yi Ming-Xin Song Xiao-Qian Guo yi-lin Wang yi-Xuan Mao Fang-Yuan Su Jing-Peng Chen Xian-Xian Wei Li-Jing Xie Cheng-Meng Chen CAS Key Laboratory of Carbon Materials Institute of Coal ChemistryChinese Academy of SciencesTaiyuan 030001ShanxiChina University of Chinese Academy of Sciences Beijing 100049China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China School of Environment and Safety Taiyuan University of Science and TechnologyTaiyuan 030001ShanxiChina

The chemical activation of various precursors is effective for creating additional closed pores in hard carbons for sodium ***,the formation mechanism of closed pores under the influence of pore-forming agents is not well ***,an effective chemical activation followed by a high-temperature self-healing strategy is employed to generate interconnected closed pores in lignin-derived hard carbon(HCs).By systematic experimental design combined with electron paramagnetic res-onance spectroscopy,it can be found that the content of free radicals in the carbon matrix influences the closure of open pores at high *** high activation temperature(>700 C)leads to a low free radical concentration,making it difficult to achieve self-healing of open pores at high *** activation at 700°C,a balance between pore making and self-healing is achieved in the final hard carbon.A large number of free radicals triggers rapid growth and aggregation of carbon microcrys-tals,blocking pre-formed open micropores and creating additional interconnected closed pores in as-obtained hard *** a result,the optimized carbon anode(LK-700-1300)delivers a high reversible capacity of 330.8 mA h g^(-1) at 0.03 A g^(-1),which is an increase of 86 mA h g^(-1) compared to the pristine lignin-derived carbon anode(L-700-1300),and exhibits a good rate performance(202.1 mA h g^(-1) at 1 A g^(-1)).This work provides a universal and effective guidance for tuning closed pores of hard carbons from otherprecursors.

关键词： Hard carbon Chemical activation Free radical Self-healing Closed pores Sodium ion batteries

Comparison of prognostic factors in different age groups and prognostic significance of neutrophil-lymphocyte ratio in patients with gastric cancer

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World Journal of Gastrointestinal Oncology 2020年第10期12卷 1146-1166页

作者： Qiong Li lin-yi Huang Hui-Ping Xue Department of Gastroenterology and Hepatology Renji HospitalSchool of MedicineShanghai Jiao Tong UniversityShanghai 200001China

BACKGROUND Gastric cancer(GC)is one of the most common malignant tumors in the *** in recent years tremendous progress has been made in its early detection,the postoperative overall survival(OS)of GC patients remains extremely low.A number of studies have shown that age,to varying degrees,affects the prognosis of patients with ***,this study retrospectively analyzed the clinical and pathologic data of patients with GC to explore the differences in the clinical characteristics and prognostic factors in different age *** To explore the difference in clinicopathological characteristics and prognostic factors in GC patients in different age *** In this retrospective study,we analyzed 1037 GC patients admitted to Renji Hospital Affiliated to Shanghai Jiao Tong University School of Medicine from May 2010 to January *** patients were divided into two groups based on age:Younger group(less than 70 years old)and older group(no less than 70 years old).In the younger group,we subdivided the patients in two subgroups by a cutoff value of 45 *** clinical features and prognostic factors were analyzed in both ***,we retrieved studies that evaluated the predictive role of neutrophil-lymphocyte ratio(NLR)by searching two medical databases,PubMed and EMBASE,to conduct a ***-effects model was used to pool the *** In the retrospective study,the mean OS time of the younger group(64.7 mo)was significantly longer than that of the older group(48.1 mo)(P<0.001).Among patients under 70 years of age,hospitalization time,tumor–node–metastasis(TNM)stage,vascular invasion,and preoperative low pre-albumin were independently associated with OS(P<0.005).In patients aged 70 years and above,TNM stage,esophageal invasion,histological type,and preoperative NLR were independent factors for OS(P<0.05).The OS of these older patients was also significantly shorter(P<0.05).In the meta-analysis,19 retrieved studies inc

关键词： Gastric cancer Neutrophil-lymphocyte ratio Age Prognosis Overall survival Meta-analysis

Co-developing an international TLS network for the 3D ecological understanding of global trees:System architecture,remote sensing models,and functional prospects

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Environmental Science and Ecotechnology 2023年第4期16卷 38-51页

作者： yi lin Sagi Filin Roland Billen Nobuya Mizoue School of Earth and Space Sciences Peking UniversityBeijing100871China Technion-Israel Institute of Technology Haifa IL32000Israel Department of Geography University of LiegeLiege4000Belgium Faculty of Agriculture Kyushu UniversityFukuoka819-0395Japan

Trees are spread worldwide,as the watchmen that experience the intricate ecological effects caused by various environmental *** order to better understand such effects,it is preferential to achieve finely and fully mapped global trees and their *** this task,aerial and satellite-based remote sensing(RS)methods have been ***,a critical branch regarding the apparent forms of trees has significantly fallen behind due to the technical deficiency found within their globalscale surveying ***,terrestrial laser scanning(TLS),a state-of-the-art RS technology,is useful for the in situ three-dimensional(3D)mapping of trees and their ***,we proposed co-developing an international TLS network as a macroscale ecotechnology to increase the 3D ecological understanding of global ***,we generated the system architecture and tested the available RS models to deepen its ground ***,we verified the ecotechnology regarding the identification of its theoretical feasibility,a review of its technical preparations,and a case testification based on a prototype we ***,we conducted its functional prospects by previewing its scientific and technical potentials and its functional ***,we summarized its technical and scientific challenges,which can be used as the cutting points to promote the improvement of this technology in future ***,with the implication of establishing a novel cornerstone-sense ecotechnology,the co-development of an international TLS network can revolutionize the 3D ecological understanding of global trees and create new fields of research from 3D global tree structural ecology to 3D macroecology.

关键词： Global trees Terrestrial laser scanning(TLS) International TLS network Three-dimensional(3D)ecotechnology 3D global tree structural ecology 3D macroecology

Specific Heat of Hollow Nanosphere Coupled to Substrate： Quantum Size Effects

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Communications in Theoretical Physics 2007年第4X期48卷 745-748页

作者： yiN Xue-Ai LUO Bo LIU Fei yi lin Department of Physics Huazhong University of Science and Technology Wuhan 430074 China

With the help of the elastic wave theory in the perturbed approximation the density-of-states for vibrational modes and the specific heat are studied for different hollow Si nanospheres, coupled with a semi-infinite substrate. We find that the modes of such coupled hollow spheres are significantly broadened and shifted toward low frequencies. The specific heat of the coupled hollow nanosphere is bigger than an isolated one due to the coupling interaction and quantum size effects. The predicted coupling and size enhancements on specific heat are probed in thermal experiments.

关键词： elastic wave size effect specific heat

A seqlet-based maximum entropy Markov approach for protein secondary structure prediction

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Science China(Life Sciences) 2005年第4期48卷 394-405页

作者： DONG Qiwen WANG Xiaolong lin Lei GUAN yi School of Computer Science and Technology Harbin Institute of Technology Harbin 150006 China School of Computer Science and Technology Harbin Institute of Technology Harbin 150006 China School of Computer Science and Technology Harbin Institute of Technology Harbin 150006 China School of Computer Science and Technology Harbin Institute of Technology Harbin 150006 China

A novel method for predicting the secondary structures of proteins from amino acid sequence has been presented. The protein secondary structure seqlets that are analogous to the words in natural language have been extracted. These seqlets will capture the relationship be-tween amino acid sequence and the secondary structures of proteins and further form the protein secondary structure dictionary. To be elaborate, the dictionary is organism-specific. Protein sec-ondary structure prediction is formulated as an integrated word segmentation and part of speech tagging problem. The word-lattice is used to represent the results of the word segmentation and the maximum entropy model is used to calculate the probability of a seqlet tagged as a certain secondary structure type. The method is markovian in the seqlets, permitting efficient exact cal-culation of the posterior probability distribution over all possible word segmentations and their tags by viterbi algorithm. The optimal segmentations and their tags are computed as the results of protein secondary structure prediction. The method is applied to predict the secondary struc-tures of proteins of four organisms respectively and compared with the PHD method. The results show that the performance of this method is higher than that of PHD by about 3.9% Q3 accuracy and 4.6% SOV accuracy. Combining with the local similarity protein sequences that are obtained by BLAST can give better prediction. The method is also tested on the 50 CASP5 target proteins with Q3 accuracy 78.9% and SOV accuracy 77.1%. A web server for protein secondary structure prediction has been constructed which is available at http://***:81/demos/bi-ology/***.

关键词： protein secondary structure prediction protein secondary structure seqlets Word-lattice maximum entropy Markov model.

Effects of Dzyaloshinsky-Moriya Interaction on Planar Rotator Model on Triangular Lattice

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Communications in Computational Physics 2012年第4期11卷 1169-1181页

作者： Yun-Zhou Sun lin yi Jian-Sheng Wang Department of Physics Wuhan Textile UniversityWuhan 430073China Department of Physics Huazhong University of Science and TechnologyWuhan 430074China Department of Physics National University of SingaporeSingapore 117542Singapore

The thermodynamic properties and some critical properties of the planar rotatormodel with chiral Dzyaloshinsky-Moriya(DM)interaction on triangular lattice are analyzed using a hybridMonte *** has been shown that there is a XYlike Berezinskii-Kosterlitz-Thouless(BKT)phase transition in this *** ground state of this spiral system and the effects of size mismatch are also discussed.

关键词： Critical temperature Dzyaloshinsky-Moriya interaction Monte-Carlo simulation vortex

Complete androgen insensitivity syndrome caused by the c.2678C>T mutation in the androgen receptor gene:A case report

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World Journal of Clinical Cases 2021年第35期9卷 11036-11042页

作者： Ka-Na Wang Qing-Qing Chen yi-lin Zhu Chun-lin Wang Department of Pediatrics The First Affiliated Hospital of Zhejiang University School of MedicineHangzhou 310000Zhejiang ProvinceChina

BACKGROUND Androgen insensitivity syndrome is an X-linked recessive genetic disease caused by mutations in the androgen receptor gene(AR).However,the underlying molecular mechanisms for the majority of AR variants remain *** this study,we identified a point variant in three patients with complete androgen insensitivity syndrome(CAIS),summarized the correlation analysis,and performed a literature *** SUMMARY The proband was raised as a *** infancy,she was first referred to hospital with a right inguinal *** revealed the absence of a uterus and ovaries,and a testis-like structure located at the inguinal *** diagnostic workup detected a 46,XY karyotype,and fluorescence in situ hybridization analysis showed the presence of the SRY *** analysis revealed the excised tissue to be *** years later,she was admitted to our hospital with a lack of breast *** pubic hair and breasts were Tanner stage *** had normal female external *** hormone tests showed normal testosterone levels,low estradiol levels,and high gonadotropin *** two siblings underwent similar examinations,and all three had a rare hemizygous missense mutation in AR:c.2678C>*** vitro functional analyses revealed decreased nuclear translocation in AR-c.2678C>T mutation *** This case of CAIS was caused by an AR variant(c.2678C>T).Functional studies showed impaired nuclear translocation ability of the mutant protein.

关键词： Androgen insensitivity syndrome 46 XY disorders of sex development Variants Androgen receptor gene Ligand-binding domain Case report