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  1. Artikel ; Online: Association between ALDH

    Xinhua, Jiang / Yanfei, Zhao

    African health sciences

    2017  Band 17, Heft 1, Seite(n) 108–115

    Abstract: Background: The findings from studies on the relationship between aldehyde dehydrogenases(ALDH) gene Glu504Lys polymorphism and colorectal cancer(CRC) were inconsistent.: Objectives: The aim of this meta-analysis was to assess ALDH gene Glu504Lys ... ...

    Abstract Background: The findings from studies on the relationship between aldehyde dehydrogenases(ALDH) gene Glu504Lys polymorphism and colorectal cancer(CRC) were inconsistent.
    Objectives: The aim of this meta-analysis was to assess ALDH gene Glu504Lys polymorphism and CRC risk.
    Methods: All of the relevant studies were identified from PubMed and Embase database. Statistical analyses were conducted with STATA 12.0 software. Odds ratio (OR) with 95% confidence interval (CI) values were applied to evaluate the strength of the association. Nine studies with 2779 cases and 4533 controls were included.
    Results: No significant variation in CRC risk was detected in any of the genetic models overall. To explore the sources of heterogeneity,we performed further sub-group analyses by ethnicity and quality assessment of these studies. In the sub-group analysis by race, significant associations between ALDH gene Glu504Lys polymorphism and CRC risk were found in China(Glu/Lys vs Glu/Glu: OR = 0.70, 95%CI = 0.57-0.85; the dominant model: OR =0.69, 95%CI =0.48-0.98) and Japan(Lys/Lys vs Glu/Glu:OR =0.72, 95%CI =0.55-0.95).
    Conclusion: This meta-analysis suggests that the ALDH2 Glu504Lys polymorphism may be associated with susceptibility to CRC. Furthermore, large and well-designed studies are needed to confirm these conclusions.
    Mesh-Begriff(e) Aldehyde Dehydrogenase/genetics ; Aldehyde Dehydrogenase, Mitochondrial/genetics ; Aldehyde Dehydrogenase, Mitochondrial/metabolism ; Asian Continental Ancestry Group/genetics ; China ; Colorectal Neoplasms/enzymology ; Colorectal Neoplasms/genetics ; Genetic Predisposition to Disease ; Humans ; Polymorphism, Genetic/genetics ; Polymorphism, Single Nucleotide ; Risk Factors
    Chemische Substanzen ALDH2 protein, human (EC 1.2.1.3) ; Aldehyde Dehydrogenase (EC 1.2.1.3) ; Aldehyde Dehydrogenase, Mitochondrial (EC 1.2.1.3)
    Sprache Englisch
    Erscheinungsdatum 2017-03
    Erscheinungsland Uganda
    Dokumenttyp Journal Article ; Meta-Analysis
    ZDB-ID 2240308-5
    ISSN 1729-0503 ; 1680-6905
    ISSN (online) 1729-0503
    ISSN 1680-6905
    DOI 10.4314/ahs.v17i1.14
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  2. Artikel ; Online: Deep Convolutional Neural Networks-Based Automatic Breast Segmentation and Mass Detection in DCE-MRI

    Han Jiao / Xinhua Jiang / Zhiyong Pang / Xiaofeng Lin / Yihua Huang / Li Li

    Computational and Mathematical Methods in Medicine, Vol

    2020  Band 2020

    Abstract: Breast segmentation and mass detection in medical images are important for diagnosis and treatment follow-up. Automation of these challenging tasks can assist radiologists by reducing the high manual workload of breast cancer analysis. In this paper, ... ...

    Abstract Breast segmentation and mass detection in medical images are important for diagnosis and treatment follow-up. Automation of these challenging tasks can assist radiologists by reducing the high manual workload of breast cancer analysis. In this paper, deep convolutional neural networks (DCNN) were employed for breast segmentation and mass detection in dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI). First, the region of the breasts was segmented from the remaining body parts by building a fully convolutional neural network based on U-Net++. Using the method of deep learning to extract the target area can help to reduce the interference external to the breast. Second, a faster region with convolutional neural network (Faster RCNN) was used for mass detection on segmented breast images. The dataset of DCE-MRI used in this study was obtained from 75 patients, and a 5-fold cross validation method was adopted. The statistical analysis of breast region segmentation was carried out by computing the Dice similarity coefficient (DSC), Jaccard coefficient, and segmentation sensitivity. For validation of breast mass detection, the sensitivity with the number of false positives per case was computed and analyzed. The Dice and Jaccard coefficients and the segmentation sensitivity value for breast region segmentation were 0.951, 0.908, and 0.948, respectively, which were better than those of the original U-Net algorithm, and the average sensitivity for mass detection achieved 0.874 with 3.4 false positives per case.
    Schlagwörter Computer applications to medicine. Medical informatics ; R858-859.7
    Thema/Rubrik (Code) 006
    Sprache Englisch
    Erscheinungsdatum 2020-01-01T00:00:00Z
    Verlag Hindawi Limited
    Dokumenttyp Artikel ; Online
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  3. Artikel ; Online: Some important questions in plant reproductive ecology

    Mingxun Ren / Xinhua Jiang / Dayong Zhang

    Biodiversity Science, Vol 20, Iss 3, Pp 241-

    2012  Band 249

    Abstract: One of the main purposes of scientific research is to form questions and collect data to find patterns that best explain a particular process. In plant reproductive ecology, scientists have found important patterns including overwhelming occurrence of co- ...

    Abstract One of the main purposes of scientific research is to form questions and collect data to find patterns that best explain a particular process. In plant reproductive ecology, scientists have found important patterns including overwhelming occurrence of co-sexual flowers, separate flowering and fruiting periods, low seed-set ratio, simultaneous mass blooming, high occurrence of outcrossing in harsh habitats, interactions of mating systems and life-history, flower differentiations on the same inflorescence, and heteranthery(stamen differentiations in same flower). The underlying mechanisms of these patterns are in debate and are still in need of further examination. In this paper, we emphasize resource allocation at different levels, i.e. individual, inflorescence, and flower, and try to explain above patterns to reconcile some contradictory resultsobtained in studies based on different foci. Resource and sexual allocations directly determine the sexual role of a flower and floral traits, and as a consequence, plant mating systems are determined. In the future, studies considering both ecological factors and hierarchical levels will become more important and it is essential to focus more effort to study resource allocation to gain greater understanding and accurate predictions of floral adaptations and evolution.
    Schlagwörter pollination biology ; sexual allocation ; pollination system ; floral syndromes ; andromonoecy ; Biology (General) ; QH301-705.5 ; Science ; Q ; DOAJ:Biology ; DOAJ:Biology and Life Sciences
    Thema/Rubrik (Code) 580
    Sprache Chinesisch
    Erscheinungsdatum 2012-05-01T00:00:00Z
    Verlag Science Press
    Dokumenttyp Artikel ; Online
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  4. Artikel ; Online: A Novel Topology for the Zonal Network with Wireless Coverage

    Tongsen WANG / Zhangxi LIN / Xinhua JIANG / Fumin ZOU

    Communications and Network, Vol 01, Iss 02, Pp 57-

    2009  Band 62

    Abstract: In this paper, we propose a banyan-tree topology for the wireless coverage along the road or railway, which is characterized as a zonal network. Theoretical analysis and numerical studies show that the proposed ban-yan-tree topology is appropriate for ... ...

    Abstract In this paper, we propose a banyan-tree topology for the wireless coverage along the road or railway, which is characterized as a zonal network. Theoretical analysis and numerical studies show that the proposed ban-yan-tree topology is appropriate for the zonal network with the Wireless Mesh Network (WMN) technology, which is feasible to deploy and has the enhanced robust, improved bandwidth with this topology.
    Schlagwörter Banyan-Tree Topology ; Zonal Network ; Wireless Coverage ; Transportation ; Electronic computers. Computer science ; QA75.5-76.95 ; Instruments and machines ; QA71-90 ; Mathematics ; QA1-939 ; Science ; Q ; DOAJ:Computer Science ; DOAJ:Technology and Engineering
    Thema/Rubrik (Code) 501
    Sprache Englisch
    Erscheinungsdatum 2009-12-01T00:00:00Z
    Verlag Scientific Research Publishing
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  5. Artikel ; Online: Surgical Treatment of Displaced Midshaft Clavicle Fractures: Precontoured Plates Versus Noncontoured Plates.

    Rongguang, Ao / Zhen, Jian / Jianhua, Zhou / Jifei, Shi / Xinhua, Jiang / Baoqing, Yu

    The Journal of hand surgery

    2016  Band 41, Heft 9, Seite(n) e263–6

    Abstract: Purpose: To compare the outcomes and complications of open reduction and internal fixation using precontoured versus noncontoured plates for the treatment of midshaft clavicle fractures.: Methods: Open reduction and internal fixation using was ... ...

    Abstract Purpose: To compare the outcomes and complications of open reduction and internal fixation using precontoured versus noncontoured plates for the treatment of midshaft clavicle fractures.
    Methods: Open reduction and internal fixation using was performed on 130 patients with a midshaft clavicle fracture. Precontoured plates were used in 69 cases (group A) and noncontoured plates in 61 cases (group B).
    Results: The average follow-up in both groups was approximately 21 months. There was a significant difference between the 2 groups in mean surgery duration and blood loss, although Disabilities of the Arm, Shoulder, and Hand and Constant-Murley Shoulder scores at final follow-up were similar. Plate removal was required in 44.9% (31 of 69) of the precontoured group and 65.6% (40 of 61) of the noncontoured group. The indication was prominence of the hardware in 27.5% (19 of 69) of the precontoured group and 54.1% (33 of 61) of the noncontoured. In both groups, body mass index was lower in patients requiring implant removal because of hardware prominence. A higher proportion of females in both groups required implant removal.
    Conclusions: Precontoured plates are associated with a lower rate of hardware removal. Body mass index and gender may be factors that influence the rate of hardware removal.
    Type of study/level of evidence: Therapeutic IV.
    Sprache Englisch
    Erscheinungsdatum 2016-09
    Erscheinungsland United States
    Dokumenttyp Journal Article
    ZDB-ID 605716-0
    ISSN 1531-6564 ; 0363-5023
    ISSN (online) 1531-6564
    ISSN 0363-5023
    DOI 10.1016/j.jhsa.2016.06.007
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  6. Artikel: Algorithm of sheep body dimension measurement and its applications based on image analysis

    Lina Zhang, A / B. Pei Wu / C. Tana Wuyun / D. Xinhua Jiang / E. Chuanzhong Xuan / F. Yanhua Ma

    Computers and electronics in agriculture. 2018 Oct., v. 153

    2018  

    Abstract: Body size parameters of sheep can reflect its growth development, production performance and genetic characteristics. Therefore, the body size measurement is great significance in sheep breeding. In this study, a measuring method based on vision image ... ...

    Abstract Body size parameters of sheep can reflect its growth development, production performance and genetic characteristics. Therefore, the body size measurement is great significance in sheep breeding. In this study, a measuring method based on vision image analysis for the body size of sheep is proposed, which can be practically applied in farm environment without disturbing the animals. This approach is based on computer-assisted visual image capture in a position-limit apparatus, and based on an automatic foreground area extraction algorithm known as simple linear iterative clustering (SLIC) SuperPixels and Fuzzy c-means (FCM) clustering, a center line of flexible symmetrical body extraction algorithms, as well as measuring points extraction algorithms. The test results for 27 small-tailed Han sheep chosen randomly from herd show that the method for foreground extraction can get segmentation images with well-remained boundaries. Detection algorithm of the center line of sheep body in top view has a relatively high adaptability. The extraction of measurement points in different postures for sheep's body size has a better stability and accuracy, the maximum average relative errors between the detected and measured values of body height, rump height, body length, chest depth, chest width and rump width are 1.13%, 1.54%, 2.03%, 4.45%, 2.25% and 2.41%, respectively. The use of both left view and right view can improve the precision of the measurement, and the values from one test may have a greater deviation from the actual values due to the variety of sheep body posture, but the accuracy can be improved by averaging the measurements repeated for many times. The results also show that measurement of sheep size based on vision image analysis is feasible, and it can ensure accuracy, reduce workload and sheep stress compared to the method conducted by man. Prediction result of live-sheep weight based on body size shown that the parameters got by image processing can be used for monitoring the growth of sheep.
    Schlagwörter algorithms ; body length ; chest ; farms ; herds ; image analysis ; monitoring ; posture ; prediction ; rump ; sheep
    Sprache Englisch
    Erscheinungsverlauf 2018-10
    Umfang p. 33-45.
    Erscheinungsort Elsevier B.V.
    Dokumenttyp Artikel
    ZDB-ID 395514-x
    ISSN 0168-1699
    ISSN 0168-1699
    DOI 10.1016/j.compag.2018.07.033
    Datenquelle NAL Katalog (AGRICOLA)

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  7. Artikel: Effects of canopy gaps on N2O fluxes in a tropical montane rainforest in Hainan of China

    Yang, Huai / Changhui Peng / Cheng-I Hsieh / Han Xu / Huai Chen / Matteo Detto / Qiu Yang / Renli Chen / Shirong Liu / Wenjie Liu / Wenping Yuan / Xinhua Jiang / Xu Wang / Yide Li

    Ecological engineering. 2017 Aug., v. 105

    2017  

    Abstract: Tropical montane rainforests play an important role in increasing atmospheric N2O concentration. Although accurate estimations of N2O fluxes in tropical montane rainforests are critical for predicting global climate change, there are still considerable ... ...

    Abstract Tropical montane rainforests play an important role in increasing atmospheric N2O concentration. Although accurate estimations of N2O fluxes in tropical montane rainforests are critical for predicting global climate change, there are still considerable uncertainties about the spatial and temporal variability of the emissions. This study aims to investigate the effects of canopy gap caused by typhoons on N2O emissions, a key factor for understanding the spatial heterogeneity and supporting environmental regulations.N2O fluxes were measured monthly using static chambers both inside and outside two large canopy gaps in the tropical montane rainforest of the Jianfengling National Natural Reserve on Hainan Island, south of China, from August 2012 to July 2013.Mean annual N2O emissions were 2.19±0.43kgN2O-Nha−1yr−1 inside canopy gaps, and 1.19±0.29kgN2O-Nha−1yr−1 outside canopy gaps, revealing substantial differences in N2O emissions resulting from forest structure. Moreover, N2O emission rates within canopy gaps during the wet season (2.89kgN2O-Nha−1yr−1) were significantly higher than those during the dry season (1.34kgN2O-Nha−1yr−1), suggesting strong regulation of soil moisture and precipitation in controlling soil N dynamics. However, there were significant nonlinear relationships between N2O fluxes and water filled pore space, and soil temperature within canopy gaps, but no significant relationships were found under the closed canopy.Contribution of canopy gaps should be considered to avoid underestimation of N2O emission rates from disturbed forests. Interestingly, emissions from gaps are more strongly coupled with climate drivers (moisture and temperature), with important implications for climate change projections. Therefore, the further research is needed to study the biogeochemical processes and mechanisms behind such phenomenon.
    Schlagwörter canopy gaps ; climate change ; climatic factors ; dry season ; forest damage ; greenhouse gas emissions ; nitrous oxide ; prediction ; rain forests ; soil temperature ; soil water ; temporal variation ; typhoons ; uncertainty ; wet season ; China
    Sprache Englisch
    Erscheinungsverlauf 2017-08
    Umfang p. 325-334.
    Erscheinungsort Elsevier B.V.
    Dokumenttyp Artikel
    ZDB-ID 1127407-4
    ISSN 0925-8574
    ISSN 0925-8574
    DOI 10.1016/j.ecoleng.2017.04.042
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