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1
The Study on the Durability of the Concrete Structure
Konferans Bildirileri

Konferans Bildirileri
Kaynak :
IEEE Xplore
Yazar(lar) :
Jinping Chen , Xuesong Zhang
Konu :
Computing and Processing, Communication, Networking and Broadcast Technologies, Components, Circuits, Devices and Systems
Yıl :
2010
Jinping Chen
Yayıncı Web Sitesi
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Kaydet Alıntıla
The concrete structure is the most widely used engineering structure. It is very important to have the durability detection and evaluation of the concrete structure. This article describes the conditions of the durability research of concrete structure in home and abroad, the factors affecting the durability of concrete structure and some measures to improve the durability of concrete structure and puts forward to some methods to improve the durability of concrete structure on this basis to be referred.
DOI : 10.1109/iceee.2010.5660651
Anahtar Kelimeler : Concrete, Safety, Reliability, Periodic structures, Steel, Maintenance engineering, concrete, durability, structural engineering, concrete structure, engineering structure, durability detection
Sınıflandırma :
2
Design of the pulse duty cycle of the pseudolite signal in local area augmentation systems
Dergi Makalesi

Dergi Makalesi
Kaynak :
Springer Link
Dergi:
Science China Physics, Mechanics and Astronomy
Yazar(lar) :
ChunXia Li , JinPing Chen , HengLin Chu
Konu :
General Physics and Astronomy
Yıl :
2011
JinPing Chen
Yayıncı Web Sitesi
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Kaydet Alıntıla
The short-pulse TDMA signal is an excellent solution to the near-far problem in the pseudolite augmentation systems, and the pulse duty cycle is an important element in the solution. This paper aims at designing the duty cycle of the pseudolite pulse signals with a theoretical method. At first, the scope of the duty cycle is derived theoretically with the object of ensuring the reception of both the pseudolite signals and the satellite signals, and the expression for the theoretical upper limit is given. Then based on the proposed expression, the duty cycles of Galileo pseudolite pulse signals are designed. The theoretical upper limit can guide the design of the short-pulse TDMA pseudolite signals.
DOI : 10.1007/s11433-011-4341-x
Anahtar Kelimeler : pseudolite, short-pulse, TDMA, duty cycle
ISSN: 1674-7348 1869-1927
Sayı: 6
Cilt: 54
Sayfa: 1004-1008
3
Back Analysis and Application of Confined Aquifer Hydrogeological Parameters Based on Pumping Test
Dergi Makalesi

Dergi Makalesi
Kaynak :
Springer Link
Dergi:
Geotechnical and Geological Engineering
Yazar(lar) :
Jinping Chen , Shanpo Jia , Xuesong Zhang
Konu :
Geology, Soil Science, Geotechnical Engineering and Engineering Geology, Architecture
Yıl :
2017
Jinping Chen
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Kaydet Alıntıla
Hydrogeological parameters are important factors for engineering dewatering design. There is often a big difference in calculated hydrological parameters value due to the complexity and diversity of calculation of hydrogeological itself. In order to offset the disadvantage of low search efficiency and large amount of calculation by the traditional back analysis methods in geotechnical engineering, the back analysis method combining the Nelder–Mead algorithm and finite element method is studied. The back analysis code is developed by the software MATLAB, in which the finite element code of ABAQUS is embedded as a module. Using the proposed method in this paper, the hydrogeological parameters of the confined aquifer were calculated and compared with the theoretical analytic solution according to unsteady pumping test data. The results show that the parameter searching efficiency and the convergence precision of the proposed method have an obvious improvement and the inverse results meeting accuracy requirements can be obtained with less iterations. And results of theoretical method and numerical back analysis method are basically in the same order of magnitude, but the inverse result is smaller than the theoretical. The method proposed in this paper is effective. The proposed method is a feasible method for back analysis of stress, seepage and displacement in geotechnical engineering.
DOI : 10.1007/s10706-017-0284-y
Anahtar Kelimeler : Hydrogeological parameters, Confined water, Pumping test, Back analysis, Finite element
ISSN: 0960-3182 1573-1529
Sayı: 6
Cilt: 35
Sayfa: 2851-2861
4
Phylogeography and Population Genetic Structure of Amur Grayling in the Amur Basin
Dergi Makalesi

Dergi Makalesi
Open Access
Kaynak :
Directory of Open Access Journals (DOAJ)
Dergi:
Asian-Australasian Journal of Animal Sciences
Yazar(lar) :
Bo Ma , Tingting Lui , Ying Zhang , Jinping Chen
Yıl :
2012
Jinping Chen
Yayıncı Web Sitesi
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Kaydet Alıntıla
Amur grayling, Thymallus grubii, is an important economic cold freshwater fish originally found in the Amur basin. Currently, suffering from loss of habitat and shrinking population size, T. grubii is restricted to the mountain river branches of the Amur basin. In order to assess the genetic diversity, population genetic structure and infer the evolutionary history within the species, we analysised the whole mitochondrial DNA control region (CR) of 95 individuals from 10 rivers in China, as well as 12 individuals from Ingoda/Onon and Bureya River throughout its distribution area. A total of 64 variable sites were observed and 45 haplotypes were identified excluding sites with gaps/missing data. Phylogenetic analysis was able to confidently predict two subclade topologies well supported by maximum-parsimony and Bayesian methods. However, basal branching patterns cannot be unambiguously estimated. Haplotypes from the mitochondrial clades displayed local homogeneity, implying a strong population structure within T. grubii. Analysis of molecular variance detected significant differences among the different geographical rivers, suggesting that T. grubii in each river should be managed and conserved separately.
DOI : 10.5713/ajas.2011.11500
Anahtar Kelimeler : Amur Grayling, Population Genetic Structure, Phylogeography, Mitochondrial DNA Control Region
Cilt: 25
Sayı: 7
Sayfa: 935 - 944
Sınıflandırma :
5
Putative Genes and Pathways Involved in the Acne Treatment of Isotretinoin via Microarray Data Analyses
Dergi Makalesi

Dergi Makalesi
Open Access
Kaynak :
Directory of Open Access Journals (DOAJ)
Dergi:
BioMed Research International
Yazar(lar) :
Biao Chen , Peishan Li , Jun Li , Jinping Chen
Yıl :
2020
Jinping Chen
Yayıncı Web Sitesi
 Piri Tam Metin Bulucu
Kaydet Alıntıla
Acne is the eighth most common disease worldwide. Disease burden of acne such as anxiety, reduced self-esteem, and facial scarring lowers the life quality of acne patients. Isotretinoin is the most potent treatment for moderate-severe acne. However, the adverse events of isotretinoin especially teratogenicity limit its use. This study aims at investigating the therapeutical mechanisms of isotretinoin using bioinformatics analysis. Differentially expressed genes (DEGs) were filtered from microarray datasets GSE10432, GSE10433, and GSE11792. Functional and pathway enrichment analyses of DEGs were performed. Protein–protein interaction (PPI) network and module analyses were also conducted based on DEGs. Using isotretinoin for 1 week, LCN2, PTGES, and GDF15 were upregulated and might mediate sebocytes apoptosis and thus decreased sebum production; CCL2 originated from activated TNF signaling pathway and S100A7 could be related with “acne-flare”. While treating with isotretinoin for 8 weeks, key genes were downregulated, including HMGCS1, HMGCR, FDFT1, MVD, IDI1, and FDPS, which may be associated with decreased sebum synthesis; HMGCS1, HMGCR, and FDFT1 also probably associated with apoptosis of sebocytes. There were only two common genes including ACSBG1 and BCAT2 which worked in both 1 week and 8 weeks and could associate with decreased sebum synthesis and apoptosis of sebocytes, respectively. These results indicate potential therapeutics and side effect mechanisms of isotretinoin in the acne treatment and provide a research direction to further investigate the therapeutic mechanism of isotretinoin and thus develop retinoid-like compounds with similar curative effect and without teratogenicity.
DOI : 10.1155/2020/5842795
Cilt: 2020
Sınıflandırma :
6
Genetic Diversity and Population Demography of the Chinese Crocodile Lizard (Shinisaurus crocodilurus) in China
Araştırma Makalesi

Araştırma Makalesi
Open Access
Kaynak 1:
PLOS - Public Library of Science
Kaynak 2:
Directory of Open Access Journals (DOAJ)
Dergi:
Public Library of Science
Yazar(lar) :
Jinping Chen , Zhengjun Wu , Linmiao Li , Hui Wang , Huayuan Huang
Yıl :
2014
Jinping Chen
Tam Metin
Kaydet Alıntıla
The Chinese crocodile lizard Shinisaurus crocodilurus is a critically endangered species, listed in Appendix II of CITES. Its populations and habitat in China have undergone significant changes in recent years. Understanding the genetic variability and phylogeography of this species is very important for successful conservation. In this study, samples were taken from 11 wild ponds and two captive populations in China. We sequenced mitochondrial CYTB, partial ND6, and partial tRNA-Glu and genotyped 10 microsatellite loci. Our analyses of these data showed low genetic variability, no strong isolation caused by distance, and a lack of a phylogeographic structure in this species. Based on our results, the basal divergence between two clades of S. crocodilurus in China may have been caused by the formation of the Pearl River system. We found a population expansion in one of these clades. Microsatellite analysis indicated the presence of three clusters, separated by significant genetic differences. We found that most individuals in the two captive populations were from the Luokeng (Guangdong) and Guangxi wild source populations, respectively.
DOI : 10.1371/journal.pone.0091570
Anahtar Kelimeler : China, Haplotypes, Population genetics, Phylogeography, Ponds, Lizards, Conservation genetics, Mitochondrial DNA
Sınıflandırma :
7
Identification and differential expression of piRNAs in the gonads of Amur sturgeon (Acipenser schrenckii)
Dergi Makalesi

Dergi Makalesi
Open Access
Kaynak :
Directory of Open Access Journals (DOAJ)
Yazar(lar) :
Lihong Yuan , Linmiao Li , Xiujuan Zhang , Haiying Jiang , Jinping Chen
Yıl :
2019
Jinping Chen
Yayıncı Web Sitesi
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Kaydet Alıntıla
Objective Sturgeons are considered living fossils, and have a very high conservation and economic value. Studies on the molecular mechanism of sturgeon gonadal development and sex differentiation would not only aid in understanding vertebrate sex determination but also benefit sturgeon aquaculture. Piwi-interacting RNAs (piRNAs) have been shown to function in germline or gonadal development. In this study, we performed small RNA deep sequencing and microarray hybridization to identify potential sturgeon piRNAs. Methods Male and female sturgeon gonads were collected and used for small RNA sequencing on an Illumina HiSeq platform with the validation of piRNA expression by microarray chip. The program Bowtie and k-mer scheme were performed to filter small RNA reads and discover potential sturgeon piRNAs. A known piRNA database, the coding sequence (CDS), 5′ and 3′ untranslated region (UTR) database of the A. Schrenckii transcriptome, Gene Ontology (GO) database and KEGG pathway database were searched subsequently to analyze the potential bio-function of sturgeon piRNAs. Results A total of 875,679 putative sturgeon piRNAs were obtained, including 93 homologous to known piRNAs and hundreds showing sex-specific and sex-biased expression. Further analysis showed that they are predominant in both the ovaries and testes and those with a sex-specific expression pattern are nearly equally distribution between sexes. This may imply a relevant role in sturgeon gonadal development. KEGG pathway and GO annotation analyses indicated that they may be related to sturgeon reproductive processes. Conclusion Our study provides the first insights into the gonadal piRNAs in a sturgeon species and should serve as a useful resource for further elucidation of the gene regulation involved in the sex differentiation of vertebrates. These results should also facilitate the technological development of early sex identification in sturgeon aquaculture.
DOI : 10.7717/peerj.6709
Anahtar Kelimeler : piRNA, Sturgeon, Gonadal development
ISSN: 2167-8359
Cilt: 7
Sayfa: e6709
Sınıflandırma :
8
BeiDou Satellite Unhealthy States and the Impact on System Performance
Dergi Makalesi

Dergi Makalesi
Open Access
Kaynak 1:
Directory of Open Access Journals (DOAJ)
Kaynak 2:
PubMed
Dergi:
Sensors
Yazar(lar) :
Caibo Hu , Chuang Shi , Jinping Chen , Yidong Lou , Fei Wang
Yıl :
2018
Jinping Chen
Piri Tam Metin Bulucu
Kaydet Alıntıla
The BeiDou system satellites may be unhealthy due to many reasons, affecting system performance in different ways. Therefore, it is important to analyze the causes and characteristics of the satellites’ unhealthy states. In this study, these states are classified into five types based on the broadcast ephemeris. Three criteria are presented, based on which a general classification method is proposed. Data from July 2017 to June 2018 are analyzed to validate the method, from which we know that the average unhealthy duration due to satellite maneuvers is much longer than the duration of unhealthy states related to satellite orbit or clock anomalies, and the other unhealthy states may be caused by inbound or outbound satellites. Statistics show that most of the time, the number of unhealthy satellites is no more than two and the average positioning accuracy in the service area will decrease by no more than 0.75 and 1.2 meters when one or two BDS satellites are unhealthy, respectively.
DOI : 10.3390/s18124196
Anahtar Kelimeler : BeiDou, unhealthy state, broadcast ephemeris, maneuver
ISSN: 1424-8220
Cilt: 18
Sayı: 12
Sayfa: 4196
Sınıflandırma :
9
High-Throughput Sequencing of MicroRNA Transcriptome and Expression Assay in the Sturgeon, Acipenser schrenckii
Araştırma Makalesi

Araştırma Makalesi
Open Access
Kaynak 1:
PLOS - Public Library of Science
Kaynak 2:
Directory of Open Access Journals (DOAJ)
Dergi:
Public Library of Science
Yazar(lar) :
Jinping Chen , Haiying Jiang , Linmiao Li , Xiujuan Zhang , Lihong Yuan
Yıl :
2014
Jinping Chen
Tam Metin
Kaydet Alıntıla
Sturgeons are considered as living fossils and have very high evolutionary, economical and conservation values. The multiploidy of sturgeon that has been caused by chromosome duplication may lead to the emergence of new microRNAs (miRNAs) involved in the ploidy and physiological processes. In the present study, we performed the first sturgeon miRNAs analysis by RNA-seq high-throughput sequencing combined with expression assay of microarray and real-time PCR, and aimed to discover the sturgeon-specific miRNAs, confirm the expressed pattern of miRNAs and illustrate the potential role of miRNAs-targets on sturgeon biological processes. A total of 103 miRNAs were identified, including 58 miRNAs with strongly detected signals (signal >500 and P≤0.01), which were detected by microarray. Real-time PCR assay supported the expression pattern obtained by microarray. Moreover, co-expression of 21 miRNAs in all five tissues and tissue-specific expression of 16 miRNAs implied the crucial and particular function of them in sturgeon physiological processes. Target gene prediction, especially the enriched functional gene groups (369 GO terms) and pathways (37 KEGG) regulated by 58 miRNAs (P<0.05), illustrated the interaction of miRNAs and putative mRNAs, and also the potential mechanism involved in these biological processes. Our new findings of sturgeon miRNAs expand the public database of transcriptome information for this species, contribute to our understanding of sturgeon biology, and also provide invaluable data that may be applied in sturgeon breeding.
DOI : 10.1371/journal.pone.0115251
Anahtar Kelimeler : MicroRNAs, Sturgeons, RNA sequencing, Small nucleolar RNAs, Microarrays, Transcriptome analysis, Sequence databases, Messenger RNA
10
ChemInform Abstract: Ionic Liquid-Promoted Copper(II)-Catalyzed Homocoupling of Terminal Alkynes in Aqueous Phase or under Solvent-Limited Conditions.
Dergi Makalesi

Dergi Makalesi
Kaynak :
Wiley Online Library
Dergi:
ChemInform
Yazar(lar) :
Shiguang Li , Xi Chen , Jinping Chen , Hang Gong
Yıl :
2016
Jinping Chen
Yayıncı Web Sitesi
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Kaydet Alıntıla
An ionic liquid‐promoted copper‐catalyzed homocoupling of terminal alkynes using air as oxidant in aqueous phase or solvent‐limited conditions is developed.
DOI : 10.1002/chin.201650040
ISSN: 0931-7597
Sayı: 50
Cilt: 47

11
Post-Modification ofmeso-meso-Linked Porphyrin Arrays by Iridium and Rhodium Catalyses for Tuning of Energy Gap
Dergi Makalesi

Dergi Makalesi
Kaynak :
Wiley Online Library
Dergi:
Chemistry - An Asian Journal
Yazar(lar) :
Jinping Chen , Naoki Aratani , Hiroshi Shinokubo , Atsuhiro Osuka
Konu :
General Chemistry
Yıl :
2009
Jinping Chen
Yayıncı Web Sitesi
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Kaydet Alıntıla
Skillfully attached!meso–meso‐Linked diporphyrins can be efficiently and selectively functionalized with multiple unsaturated carboxylic acid groups through iridium and rhodium catalyses. This post‐modification strategy allows fine‐tuning of energy levels of each porphyrin unit.
DOI : 10.1002/asia.200900053
ISSN: 1861-4728
Sayı: 7
Cilt: 4
Sayfa: 1126-1133
12
Functionalization of Boron Dipyrrin (BODIPY) Dyes through Iridium and Rhodium Catalysis: A Complementary Approach to α- and β-Substituted BODIPYs
Dergi Makalesi

Dergi Makalesi
Kaynak :
Wiley Online Library
Dergi:
Chemistry - A European Journal
Yazar(lar) :
Jinping Chen , Masatoshi Mizumura , Hiroshi Shinokubo , Atsuhiro Osuka
Konu :
General Chemistry
Yıl :
2009
Jinping Chen
Yayıncı Web Sitesi
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Kaydet Alıntıla
Two series of BODIPY dyes with substituents either in the α positions or in the β positions and different conjugation lengths were synthesized by means of iridium‐catalyzed borylation and rhodium‐catalyzed Heck‐type addition (see scheme). The α‐ and β‐substituted series show completely different photophysical properties. BODIPY=boron dipyrrin.
DOI : 10.1002/chem.200802541
ISSN: 0947-6539
Sayı: 24
Cilt: 15
Sayfa: 5942-5949
13
ChemInform Abstract: A Mild CuCl-Catalyzed Glaser-Type Homocoupling Reaction: Air Oxidation and Room Temperature.
Dergi Makalesi

Dergi Makalesi
Kaynak :
Wiley Online Library
Dergi:
ChemInform
Yazar(lar) :
Xi Chen , Hailong Zhang , Jinping Chen , Hang Gong
Yıl :
2015
Jinping Chen
Yayıncı Web Sitesi
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Kaydet Alıntıla
The Glaser‐type homocoupling reaction of terminal alkynes gives the corresponding 1,3‐diynes under simple conditions.
DOI : 10.1002/chin.201533088
ISSN: 0931-7597
Sayı: 33
Cilt: 46
Sayfa: no-no
14
Research on multipath limiting antenna array with fixed phase center
Dergi Makalesi

Dergi Makalesi
Kaynak :
Springer Link
Dergi:
GPS Solutions
Yazar(lar) :
Li Sun , Jinping Chen , Shusen Tan , Zhi Chai
Konu :
General Earth and Planetary Sciences
Yıl :
2014
Jinping Chen
Yayıncı Web Sitesi
Tam Metin
Kaydet Alıntıla
As the Compass satellite system is under construction, various applications are emerging. Multipath mitigation is still a critical problem that must be resolved, especially short delay multipath. Research on multipath mitigation is reported and a multipath limiting antenna array including the algorithm is discussed. The carrier phase data of the receiver are subjected to forward–backward spatial smoothing to decorrelate the signals. The multiple signal classification (MUSIC) algorithm estimates the direction of the satellite signal and the direction of the multipath. Based on the direction of arrival (DOA), the beamforming maximizes the gain in the satellite signal direction and places nulls in the multipath directions. Compared to other beamforming algorithms, the method presented places nulls in the multipath directions and obtains high gain in the satellite direction. At the same time, the phase is not changed during the vector weighting method. The multipath limiting antenna array discussed resolves the problem that the short delay multipath cannot be reduced in signal processing multipath mitigation technology and that in the process, the phase in the direction of the satellite signal is not changed. An extra carrier phase measurement error of the receiver is not introduced, and a phase correction after beamforming is not necessary. The multipath limiting antenna array and the algorithm can provide support for the high-performance satellite navigation system.
DOI : 10.1007/s10291-014-0400-x
Anahtar Kelimeler : Multipath mitigation, Coherent signals, Direction of arrival estimation, Beamforming, Phase center
ISSN: 1080-5370 1521-1886
Sayı: 4
Cilt: 19
Sayfa: 505-510
15
Efficient Rhodium-Catalyzed Installation of Unsaturated Ester Functions onto Porphyrins: Site-Specific Heck-Type Addition versus Conjugate Addition
Dergi Makalesi

Dergi Makalesi
Kaynak :
Wiley Online Library
Dergi:
Chemistry - A European Journal
Yazar(lar) :
Hiromi Baba , Jinping Chen , Hiroshi Shinokubo , Atsuhiro Osuka
Konu :
General Chemistry
Yıl :
2008
Jinping Chen
Yayıncı Web Sitesi
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Kaydet Alıntıla
A facile introduction of α,β‐ or α,β,γ,δ‐unsaturated ester functions onto porphyrins was achieved through rhodium‐catalyzed addition of β‐borylporphyrins to acrylate or 2,4‐pentadienoate esters. The reaction of meso‐borylporphyrins with acrylates exclusively afforded saturated esters by 1,4‐conjugate addition under the same reaction conditions. Thus, the reaction mode (Heck‐type versus conjugate addition) is highly dependent on the reaction site (β versus meso). This functionalization has a significant impact on the electronic properties of the π system of porphyrins, which induces a substantial redshift and broadening in the absorption spectra by effective conjugation through the β positions. The coplanar structure of the unsaturated ester moieties with respect to the porphyrin core has been unambiguously elucidated by X‐ray crystallographic analysis.
DOI : 10.1002/chem.200701943
ISSN: 0947-6539
Sayı: 14
Cilt: 14
Sayfa: 4256-4262
16
The Effect of Disease and Season to Hepatopancreas and Intestinal Mycobiota of Litopenaeus vannamei
Dergi Makalesi

Dergi Makalesi
Open Access
Kaynak :
Directory of Open Access Journals (DOAJ)
Dergi:
Frontiers in Microbiology
Yazar(lar) :
Juan Li , Haiying Jiang , Linmiao Li , Xiujuan Zhang , Jinping Chen
Yıl :
2019
Jinping Chen
Yayıncı Web Sitesi
 Piri Tam Metin Bulucu
Kaydet Alıntıla
Increasing evidence has manifested that the gut bacterial microbiota of shrimps is closely related to the environmental factors, host developmental stage and health status like that of humans and animals does. These studies have provided an important guidance for improving shrimp culture benefits. In practice, aside from bacteria, eukaryotic microorganisms dominated by fungal microbiota (mycobiota), also play a key role in host growth, metabolism and homeostasis. However, little so far is known about the mycobiota in the digestive tract of shrimp. In this study, we used high-throughput sequencing of internal transcribed spacer 1 region to characterize the hepatopancreas and intestinal mycobiota of Pacific white shrimp and their connections with disease incidence and seasonal variation. The results showed that the hepatopancreas and intestinal mycobiota of Litopenaeus vannamei are dominated by the phyla Ascomycota and Basidiomycota, and the genera Alternaria, Tuber, Hortaea, Sarocladium, and Stagonospora. The fungal microbiota significantly varies under the influence of disease and seasonal variation. Sick shrimps had a higher level of potential pathogenic fungus, Candida in the intestine. Healthy shrimps had a higher abundance of the genera Didymella and Filobasidium in the gut, and Pyrenochaetopsis in the hepatopancreas. Of note, most of the fungi carried by Pacific white shrimps were pathogens to humans. This study has revealed the intestinal and hepatopancreas mycobiota of L. vannamei and the effects of diseases and seasonal variation to the mycobiota. Our study provides important guidance for Pacific white shrimp farming and sheds further insight on the fungal microbiota.
DOI : 10.3389/fmicb.2019.00889
Anahtar Kelimeler : intestine, ITS amplicon, hepatopancreas, Litopenaeus vannamei, mycobiota
ISSN: 1664-302X
Cilt: 10
Sınıflandırma :
17
A novel change feature-based approach to predict the impact of current proposed engineering change
Dergi Makalesi

Dergi Makalesi
Kaynak :
Science Direct
Dergi:
Advanced Engineering Informatics
Yayıncı:
Elsevier
Yazar(lar) :
Jinping Chen , Shusheng Zhang , Mingwei Wang , Changhong Xu
Yıl :
2017
Jinping Chen
Yayıncı Web Sitesi
Tam Metin
Kaydet Alıntıla
The past engineering change (EC) knowledge can be reused to evaluate the impact of current proposed EC, which is gradually accepted as an effective strategy for engineers to handle EC businesses in enterprises. However, the existing approaches to evaluate EC impact are still time-consuming and complex. So this paper proposes a novel change feature-based approach to predict the impact of current proposed EC. Firstly, the related concepts of change feature are defined. Secondly, the working flow of proposed approach is introduced. Afterwards, a mathematical model is constructed for the prediction of EC impact. Finally, an application case verifies the feasibility of the proposed approach, and the evaluation against two state-of-the-art approaches (namely Mehta’s approach and k-Nearest Neighbor approach) has been done. The results of evaluation show that our approach is better than the two approaches in terms of three indexes: (a) the success rate of prediction, (b) the time of prediction, and (c) the loss function.
DOI : 10.1016/j.aei.2017.06.002
Anahtar Kelimeler : CAPP computer aided process planning, computer aided process planning, CBR case-based reason, case-based reason, CF change feature, change feature, C-FAR Change Favorable Representation, Change Favorable Representation, CFEM change feature existence mode, change feature existence mode, DSM design structure matrix, design structure matrix, EC engineering change, engineering change, ECFDM engineering change feature data meta-model, engineering change feature data meta-model, ECIA engineering change impact evaluation, engineering change impact evaluation, ECM engineering change management, engineering change management, IAS important attribute set, important attribute set, k-NN k-Nearest Neighbor, k-Nearest Neighbor, Engineering change, Change feature, Change impact, Impact assessment, Prediction
ISSN: 1474-0346
Cilt: 33
Sayfa: 132-143
Sınıflandırma :
18
M–Z Interferometer Constructed by Two S-Bend Fibers for Displacement and Force Measurements
Dergi Makalesi

Dergi Makalesi
Kaynak :
IEEE Xplore
Dergi:
IEEE Photonics Technology Letters
Yazar(lar) :
Jinping Chen , Jun Zhou , Xiaocong Yuan
Konu :
Engineered Materials, Dielectrics and Plasmas, Photonics and Electrooptics
Yıl :
2014
Jinping Chen
Yayıncı Web Sitesi
Tam Metin
Kaydet Alıntıla
An in-line Mach–Zehnder interferometer (MZI) formed by cascading two S-bend fibers (SBFs) on a single-mode fiber is proposed and fabricated only using a common fusion splicer. The SBFs serve as mode coupling elements for coupling light from the fundamental mode to the cladding modes and vice versa to construct an in-line MZI. The proposed MZI exhibits high sensitivities for displacement and force measurements. Experimental results show that the displacement and force sensitivities of \n${-}{\\rm 1.533}~{\\rm nm}/\\mu{\\rm m}$\n and \n${-}{\\rm 177.1}~{\\rm nm}/{\\rm N}$ \n, respectively, are obtained by the MZI with the length of \n${\\sim}{\\rm 2.3}~{\\rm mm}$ \n.
DOI : 10.1109/lpt.2014.2308327
Anahtar Kelimeler : Optical fiber sensors, Sensitivity, Temperature sensors, Temperature measurement, Optical fibers, Force, Displacement measurement, force measurement, Machu2013Zehnder interferometers, optical fiber sensors
ISSN: 1041-1135 1941-0174
Sayı: 8
Cilt: 26
Sayfa: 837-840
19
Analysis of electric field-induced fabrication on Au and Ti with an STM in air
Dergi Makalesi

Dergi Makalesi
Kaynak :
Science Direct
Dergi:
Applied Surface Science
Yayıncı:
Elsevier
Yazar(lar) :
Xiaodong Hu , Jing Yu , Jinping Chen , Xiaotang Hu
Yıl :
2002
Jinping Chen
Yayıncı Web Sitesi
Tam Metin
Kaydet Alıntıla
Studies of the modification mechanism of Au and Ti surfaces by electric fields applied with a scanning tunneling microscope (STM) are carried out at atmospheric pressure and room temperature. For pulses of 1–100 μs, nanodots can only be formed on Ti under conditions where the current shows substantial fluctuations, indicating tip–sample contact. If the field is applied gradually, Au is not affected and pits are formed on Ti. We interpret pit formation as a result of field-induced oxidation. Moreover, experiments show that the relative humidity plays an important part in nanostructure formation on Ti. Our results can be explained through a combination of direct contact and oxidation induced by electric field.
DOI : 10.1016/s0169-4332(01)00992-8
Anahtar Kelimeler : 61.16.C, 81.05.B, 81.65.M, 92.60.J, STM, Contact, Oxidation, Nanofabrication, Atmosphere
ISSN: 0169-4332
Sayı: 3-4
Cilt: 187
Sayfa: 173-178
Sınıflandırma :
20
New Space Vector Modulation Strategies to Reduce Inductor Current Ripple of Z-Source Inverter
Dergi Makalesi

Dergi Makalesi
Kaynak :
IEEE Xplore
Dergi:
IEEE Transactions on Power Electronics
Yazar(lar) :
Yuyao He , Yuhao Xu , Jinping Chen
Konu :
Power, Energy and Industry Applications, Aerospace, Communication, Networking and Broadcast Technologies, Components, Circuits, Devices and Systems, Computing and Processing, Engineered Materials, Dielectrics and Plasmas, Fields, Waves and Electromagnetics, General Topics for Engineers, Nuclear Engineering, Signal Processing and Analysis, Transportation
Yıl :
2018
Jinping Chen
Yayıncı Web Sitesi
Tam Metin
Kaydet Alıntıla
ZSVM1, ZSVM2, and ZSVM6 are three traditional space vector modulation (SVM) strategies for three-phase Z-source inverter. The shoot-through times of ZSVM1, ZSVM2, and ZSVM6 are divided into two equal parts, four equal parts, and six equal parts, respectively. Although these control strategies are easy to be implemented in program, their inductor current ripples are not optimized, causing large current ripple. This paper proposes new SVM strategies, named ZSVMD6 and ZSVMD1, for reducing inductor current ripples of Z-source inverter. The principle of volt-second balance is used in the proposed strategies to divide shoot-through times in real time. So every divided shoot-through time is not equal, and changing in real time. The divided shoot-through time can ensure that the sum of the inductor charging current ripple and discharging current ripple is zero at each time, therefore reducing the inductor current ripples. The derivation details of the proposed strategies are given. The inductor current ripples of the proposed strategies and traditional ones are compared and analyzed. Simulation and experiment results show that the inductor current ripples of the proposed strategies are much lower than that of the traditional ones, verifying the effectiveness of the proposed strategies.
DOI : 10.1109/tpel.2017.2692821
Anahtar Kelimeler : Inductors, Inverters, Support vector machines, Switches, Modulation, Real-time systems, Capacitors, inductors, machine control, power system control, PWM invertors, switching convertors, vectors, space vector modulation strategies, inductor current ripple reduction, Z-source inverter, ZSVM, three-phase Z-source inverter, shoot-through times, volt-second balance, discharging current ripple, divided shoot-through, SVM strategies, Inductor current ripple, space vector modulation (SVM), Z-source inverter
ISSN: 0885-8993 1941-0107
Sayı: 3
Cilt: 33
Sayfa: 2643-2654
21
Nicotine should be judged without fear and favor
Dergi Makalesi

Dergi Makalesi
Kaynak :
Science Direct
Dergi:
Medical Hypotheses
Yayıncı:
Elsevier
Yazar(lar) :
Jun Zhang , Haiyu Shao , Yongming Jin , Jinping Chen
Yıl :
2010
Jinping Chen
Yayıncı Web Sitesi
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Kaydet Alıntıla
DOI : 10.1016/j.mehy.2010.04.014
ISSN: 0306-9877
Sayı: 5
Cilt: 75
Sayfa: 471
Sınıflandırma :
22
Development and characterization of 21 SNP markers in Manis javanica based on high-throughput sequencing
Dergi Makalesi

Dergi Makalesi
Kaynak :
Springer Link
Dergi:
Conservation Genetics Resources
Yazar(lar) :
Linmiao Li , Li Wei , Jinge Ma , Jinping Chen
Konu :
Genetics, Ecology, Evolution, Behavior and Systematics
Yıl :
2017
Jinping Chen
Yayıncı Web Sitesi
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Kaydet Alıntıla
The Sunda pangolin (Manis javanica) is a quite remarkable and distinctive mammal species with its diet specialization of ants and termites, so it plays an important role in forest protection and maintaining ecological balance. But now the wild population of M. javanica has become declining dramatically due to over hunting and it has been listed as a critically endangered species by IUCN. In order to aid the conservation of this species, we report the development of 21 novel single nucleotide polymorphism (SNP) markers based on high-throughput sequencing in this study. The results show that observed heterozygosity and expected heterozygosity varied from 0.0333 to 0.9000 and from 0.0333 to 0.5172, respectively. The polymorphic information content and the minor allele frequency ranged from 0.0320 to 0.3750 and from 0.0168 to 0.5000, respectively. Only two loci showed significant deviation from Hardy–Weinberg equilibrium, but no significant linkage disequilibrium existed after Bonferroni correction. These SNP markers may provide a valuable tool for population genetic analysis, natural resource conservation and captive breeding of M. javanica.
DOI : 10.1007/s12686-017-0822-1
Anahtar Kelimeler : Manis javanica, SNP, High-throughput sequencing, Genetic diversity
ISSN: 1877-7252 1877-7260
Sayı: 3
Cilt: 10
Sayfa: 351-353
23
Low level nicotine: A novel approach to reduce osteoporosis incidence
Dergi Makalesi

Dergi Makalesi
Kaynak :
Science Direct
Dergi:
Medical Hypotheses
Yayıncı:
Elsevier
Yazar(lar) :
Jun Zhang , Feng Chen , Feng Yun , Jinping Chen
Yıl :
2010
Jinping Chen
Yayıncı Web Sitesi
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Kaydet Alıntıla
Summary Osteoporosis is a serious health problem worldwide and leads to a significant burden on society. Unfortunately, efforts to control osteoporosis are largely unsuccessful. Lowering an individual’s risk for osteoporosis must focus not only on treatment but also on modification of risk factors. One of the common risk factors is smoking tobacco. Here, we review the clinical evidence on nicotine consumption and osteoporosis, and propose a possible protective mechanism. It should be note that there is no strong clinical evidence that proves nicotine is detrimental. Studies also indicated that the prime criminal for osteoporosis is smoking not nicotine. Moreover, low level nicotine has preventive efforts on osteoporosis by stimulating osteoblasts proliferation and differentiation. We present a hypothesis that low level nicotine may be a novel approach to reduce osteoporosis incidence.
DOI : 10.1016/j.mehy.2009.12.024
ISSN: 0306-9877
Sayı: 6
Cilt: 74
Sayfa: 1067-1068
Sınıflandırma :
24
High-Sensitivity Displacement Sensor Based on a Bent Fiber Mach–Zehnder Interferometer
Dergi Makalesi

Dergi Makalesi
Kaynak :
IEEE Xplore
Dergi:
IEEE Photonics Technology Letters
Yazar(lar) :
Jinping Chen , Jun Zhou , Zhenhong Jia
Konu :
Engineered Materials, Dielectrics and Plasmas, Photonics and Electrooptics
Yıl :
2013
Jinping Chen
Yayıncı Web Sitesi
Tam Metin
Kaydet Alıntıla
A simple, low-cost, and high-sensitivity optical fiber displacement sensor is presented and fabricated by concatenating two core-offset joints (COJs) with a separation length of 13 mm using a commercial fusion splicer. The two COJs construct an in-line Mach-Zehnder interferometer (MZI). When the MZI is bent to have a bending radius of ~ 17 mm, the interference pattern of the MZI depends strongly on the bending radius. According to this character, we scheme the bent MZI as a displacement sensor in two ways providing two different bending types of the bent MZI. The displacement sensitivities obtained are up to 0.835 and 0.227 nm/μm in the large displacement variation ranges of 350 and 1000 μm, respectively.
DOI : 10.1109/lpt.2013.2285160
Anahtar Kelimeler : Optical fiber sensors, Optical fibers, Sensitivity, Interference, Optimized production technology, Robot sensing systems, Temperature measurement, fibre optic sensors, Mach-Zehnder interferometers, optical fibre fabrication, bending radius, interference pattern, fusion splicer, core-offset joints, high-sensitivity optical fiber displacement sensor, bent fiber Mach-Zehnder interferometer, size 13 mm, size 17 mm, Displacement measurement, interference, optical fibers, sensitivity
ISSN: 1041-1135 1941-0174
Sayı: 23
Cilt: 25
Sayfa: 2354-2357
25
Improved Space Vector Modulation of Quasi Z-Source Inverter to Suppress DC-Link Voltage Sag
Dergi Makalesi

Dergi Makalesi
Kaynak :
IEEE Xplore
Dergi:
IEEE Access
Yazar(lar) :
Yuyao He , Yuhao Xu , Jinping Chen
Konu :
Aerospace, Bioengineering, Communication, Networking and Broadcast Technologies, Components, Circuits, Devices and Systems, Computing and Processing, Engineered Materials, Dielectrics and Plasmas, Engineering Profession, Fields, Waves and Electromagnetics, General Topics for Engineers, Geoscience, Nuclear Engineering, Photonics and Electrooptics, Power, Energy and Industry Applications, Robotics and Control Systems, Signal Processing and Analysis, Transportation
Yıl :
2019
Jinping Chen
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Kaydet Alıntıla
The three traditional strategies ZSVM1, ZSVM2, and ZSVM6 have been commonly used to control the quasi Z-source inverter (qZSI). However, there is a serious problem that the dc-link voltage of the qZSI drops under light load, leading to the distortion of the output voltage and current of the inverter. The peak dc-link voltage also becomes much higher than its reference value, endangering the safety of the inverter and load. This paper proposes an improved SVM, namely M-ZSVM1, to suppress the dc-link voltage sag under a light load. Through analyzing the reason, the harm, and the influence factors of the dc-link voltage sag, the diode current interruption is seen as the cause of the dc-link voltage sag. Therefore, an asymmetric shoot-through state distribution method is presented to achieve the minimum current ripple, which can increase the diode current. The qZSI can work properly without the dc-link voltage sag under wide load range, improving the safety and reliability of the qZSI. Moreover, other improved ZSI topologies can also be controlled by the proposed strategy to suppress the dc-link voltage sag.
DOI : 10.1109/access.2019.2917765
Anahtar Kelimeler : Power quality, Inductors, Inverters, Switches, Capacitors, Modulation, Support vector machines, invertors, pulse width modulation, voltage control, DC-link voltage sag, space vector modulation, quasi Z-source inverter, M-ZSVM1, diode current interruption, ZSI topologies, Quasi Z-source inverter, dc-link voltage sag, space vector modulation
ISSN: 2169-3536
Cilt: 7
Sayfa: 66689-66702
26
Nonlinear phase error analysis of equivalent thickness in a white-light spectral interferometer
Dergi Makalesi

Dergi Makalesi
Open Access
Kaynak :
Directory of Open Access Journals (DOAJ)
Dergi:
Nanotechnology and Precision Engineering
Yazar(lar) :
Tong Guo , Qianwen Weng , Bei Luo , Jinping Chen , Xing Fu , Xiaotang Hu
Yıl :
2019
Jinping Chen
Yayıncı Web Sitesi
Kaydet Alıntıla
A white light spectral interferometry based on a Linnik type system was established to accurately measure the thin film thickness through transparent medium. In practical work, the equivalent thickness of a beam splitter and the mismatch of the objective lens introduce nonlinear phase errors. Adding a transparent medium also increases the equivalent thickness. The simulation results show that the equivalent thickness has a significant effect on thin film thickness measurements. Therefore, it is necessary to perform wavelength correction to provide a constant equivalent thickness for beam splitters. In the experiments, some pieces of cover glasses as the transparent medium were added to the measured beam and then a standard thin film thickness of 1052.2±0.9 nm was tested through the transparent medium. The results demonstrate that our system has a nanometer-level accuracy for thin film thickness measurement through transparent medium with optical path compensation. Keywords: White light spectral interferometry, Thin film thickness measurement, Nonlinear phase, Equivalent thickness, Transparent medium
Cilt: 2
Sayı: 2
Sayfa: 77 - 82
Sınıflandırma :
27
The complete mitochondrial genome of the Acipenser schrenckii (Acipenseridae: Acipenser)
Dergi Makalesi

Dergi Makalesi
Kaynak :
Taylor and Francis
Dergi:
Mitochondrial DNA
Yayıncı:
Informa UK Limited
Yazar(lar) :
Hui Wang , Baowei Zhang , Linmiao Li , Jinping Chen
Konu :
Genetics, Molecular Biology
Yıl :
2013
Jinping Chen
Yayıncı Web Sitesi
Tam Metin
Kaydet Alıntıla
The Acipenser schrenckii is an ancient freshwater Chondrostei species, which is mainly distributed in Amur River in China and Russian. The complete mitochondrial genome of A. schrenckii was obtained for the first time in this study. The circular genome (16,548 bp in length) consists of 37 typical animal mitochondrial genes (13 protein-coding genes, 22 transfer RNA genes, 2 ribosomal RNA genes) and 1 control region. Overall base composition of the complete mitochondrial DNA was 30% A, 24% T, 29.4% C and 16.5% G with AT (54%).
DOI : 10.3109/19401736.2013.815174
Anahtar Kelimeler : Acipenser schrenckii, genome, mitochondrion
ISSN: 1940-1736
Sayı: 1
Cilt: 26
Sayfa: 137-138

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