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Journal of Environmental Sciences 2020年第2期32卷 209-216页

作者： chao ren Yongbo Qi Guoyong Huang Shiyuan Yao Jinwei You Hongqing Hu Key Laboratory of Arable Land Conservation(Middle and Lower Reaches of Yangtze River) Ministry of AgricultureCollege of Resources and EnvironmentHuazhong Agricultural UniversityWuhan 430070China

Cell wall polysaccharides play a vital role in binding with toxic metals such as copper(Cu)***, it is still unclear whether the major binding site of Cu in the cell wall varies with different degrees of Cu ***, the contribution of each cell wall polysaccharide fraction to Cu sequestration with different degrees of Cu stresses also remains to be *** distribution of Cu in cell wall polysaccharide fractions of castor(Ricinus communis L.) root was investigated with various Cu concentrations in the hydroponic *** results showed that the hemicellulose1(HC1) fraction fixed 44.9%–67.8% of the total cell wall Cu under Cu *** addition, the pectin fraction and hemicelluloses2(HC2) fraction also contributed to the Cu binding in root cell wall,accounting for 11.0%–25.9% and 14.1%–26.6% of the total cell wall Cu under Cu treatments, *** the Cu levels were ≤ 25 μmol/L, pectin and HC2 contributed equally to Cu storage in root cell ***, when the Cu level was higher than 25 μmol/L, the ability of the pectin to bind Cu was easy to reach *** more Cu ions were bound on HC1 and HC2 fractions, and the HC2 played a much more important role in Cu binding than *** fourier transform infrared(FT-IR) and twodimensional correlation analysis(2 D-COS) techniques, the hemicellulose components were showed not only to accumulate most of Cu in cell wall, but also respond fastest to Cu stress.

关键词： Copper Cell wall Hemicellulose Pectin Two-dimensional correlation spectroscopy

Energy-based Cooperative Formation Control for Multiple Flight Vehicles 36

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Energy-based Cooperative Formation Control for Multiple Flig...

Inversion of surface vegetation water content based on GNSS-IR and MODIS data fusion

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作者： chao-Yang Dong Ming-Yu Ma Qing Wang chao ren School of Aeronautic Science and Engineering Beihang University School of Automatic Science and Electrical Engineering Beihang University

ISBN: (纸本)9781538629185

This paper is concerned with the formation control of multiple fight vehicles,and by introducing the energy states,an energy-based cooperative method is *** fight vehicle system is modelled with the communication topology and formation ***,the cooperative formation strategy is discussed with collision *** provides the formation commands which are transformed into the reference signals of each *** on theses analysis,the energy-based controller is designed to accomplish the tracking of the *** to most conventional methods,it does not require the dynamics of velocity and flight path angle to be separated into two subsystems,but integrate them to regulate the energy of the vehicle to achieve stable flight and perform the desired *** is conducted to illustrate the effectiveness of the proposed method.

关键词： Multiple flight vehicles Cooperative control Flight formation Energy-based control

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Satellite Navigation 2020年第1期1卷 230-244页

作者： Yalong Pan chao ren Yueji Liang Zhigang Zhang Yajie Shi College of Geomatics and Geoinformation Guilin University of TechnologyGuilin 541006China Research Center of Precise Engineering Surveying Guangxi Key Laboratory of Spatial Information and GeomaticsGuilin 541006China

Obtaining high-precision,long-term sequences of vegetation water content(VWC)is of great significance for assessing surface vegetation growth,soil moisture,and fire *** recent years,the global navigation satellite system-interferometric reflection(GNSS-IR)has become a new type of remote sensing technology with low cost,all-weather capability,and a high temporal *** has been widely used in the fields of snow depth,sea level,soil moisture content,and vegetation water *** normalized microwave reflectance index(NMRI)based on GNSS-IR technology has been proven to be effective in monitoring changes in *** paper considers the advantages and disadvantages of remote sensing technology and GNSS-IR technology in estimating VWC.A point-surface fusion method of GNSS-IR and MODIS data based on the GA-BP neural network is proposed to improve the accuracy of VWC *** vegetation index products(NDVI,GPP,LAI)and the NMRI that unified the temporal and spatial resolution were used as the input and output data of the training model,and the GA-BP neural network was used for training and ***,a spatially continuous NMRI product was *** a particular area of the United States as a research object,experiments show that(1)a neural network can realize the effective fusion of GNSS-IR and MODIS *** comparing the GA-BP neural network,BP neural network,and multiple linear regression(MLR),the three models fusion *** results show that the GA-BP neural network has the best modeling effect,and the r and RMSE between the model estimation result and the reference value are 0.778 and 0.0332,respectively;this network is followed by the BP neural network,in which the r and RMSE are 0.746 and 0.0465,*** has the poorest effect,with r and RMSE values of 0.500 and 0.0516,respectively.(2)The spatiotem-poral variation in the 16 days/500 m resolution NMRI product obtained by GA-BP neural network fusion is consistent with that

关键词： Vegetation water content GNSS-IR MODIS GA-BP Fusion Precision analysis

Electrical bioimpedance gastric motility measurement based on an electrical-mechanical composite mechanism

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World Journal of Gastroenterology 2012年第25期18卷 3282-3287页

作者： Shu Zhao Hong Sha Zhang-Yong Li, chao-Shi ren Institute of BiomedicalEngineering Chinese Academy of Medical Sciences and PekingUnion Medical College Tianjin 300192 China College of Bioinformation Chongqing Univer-sity of Posts and Telecommunications Chongqing 400065 China

AIM： To introduce a bioimpedance gastric motility mea- surement method based on an electrical-mechanical composite concept and a preliminary clinical application. METHODS： A noninvasive gastric motility measure- ment method combining electrogastrograrn （EGG） and impedance gastric motility （IGM） test was used. Prelim- inary clinical application studies of patients with func- tional dyspepsia （FD） and gastritis, as well as healthy controls, were carried out. Twenty-eight FD patients （mean age 40.9±9.7 years） and 40 healthy volun- teers （mean age 30.9±7.9 years） were involved. IGM spectrum was measured for both the healthy subjects and FD patients, and outcomes were compared in the FD patients before treatment and 1 wk and 3 wk after treatment. IGM parameters were obtained from 30 erosive gastritis patients （mean age 50.5±13.0 years） and 40 healthy adults, and IGM and EGG results were compared in the gastritis patients before treatment and 1 wk after ***： There were significant differences in the IGM parameters between the FD patients and healthy subjects, and FD patients had a poorer gastric motility [percentage of normal frequency （PNF） 70.8±25.5 in healthy subjects and 28.3 =t= 16.9 in FD patients, P 〈 0.01]. After 1 wk administration of domperidone 10 mg, tid, the gastric motility of FD patients was not im- proved, although the EGG of the patients had returned to normal. After 3 wk of treatment, the IGM rhythm of the FD patients became normal. There was a significant difference in IGM parameters between the two groups （PNF 70.4：1：25.5 for healthy subjects and 36.1 4- 21.8 for gastritis patients, P 〈 0.05）. The EGG rhythm of the gastritis patients returned to normal （frequency insta- bility coefficient 2.22±0.43 before treatment and 1.77 ：t： 0.19 one wk after treatment, P 〈 0.05） after 1 wk of treatment with sodium rabeprazole tablets, 10 mg, qd, po, qm, while some IGM parameters showed a tenden- cy toward improvement but had not reached statistical si

关键词： Gastric motility Electrical bioimpedance Electrical-mechanical composite Electrogastrogram

A case study on how astronomical cycles affect the organic carbon accumulation

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Journal of Palaeogeography 2023年第4期12卷 637-651页

作者： Yang Li ren-chao Yang Carlos Zavala Liang Dong Valentin Trobbiani Shandong Provincial Key Laboratory of Depositional Mineralization and Sedimentary Minerals Shandong University of Science and TechnologyQingdao 266590Shandong ProvinceChina Laboratory for Marine Mineral Resources Qingdao National Laboratory for Marine Science and TechnologyQingdao 266071Shandong ProvinceChina Geology Department Universidad Nacional del SurBahía Blanca 8000Argentina Geología de Cuencas Sedimentarias(GCS)Argentina Bahía Blanca 8000Argentina

The paleoclimate change impacts the sedimentary environment and process,which in turn control the accumulation of organic *** studies have shown that the paleoclimate is controlled by astronomical ***,understanding how these cycles impact the accumulation of organic carbon is a critical question that requires in-depth *** studies have shown that Milankovitch cycle can be revealed from the sediments of the 7^(th)Oil Member(Chang 7 Member for short)of the Triassic Yanchang Formation in the southern Ordos Basin,suggesting that the deposition was controlled by astronomically-forced climate *** on previous research,this study collected natural gamma(GR)data of Chang 7 Member from the N36 Well to further analyze astronomical cycles,combined with X-ray fluorescence(XRF)analysis and total organic carbon(TOC)tests,to reconstruct the paleoenvironment and analyze the organic matter enrichment *** results of this contribution show that,paleoclimate,paleo-redox conditions,paleo-water level,paleo-productivity and sediment accumulation rate(SAR)collectively controlled the enrichment of organic ***,this study identified the presence of eccentricity,obliquity,precession,and the 1.2 Myr long obliquity cycle in the Chang 7 *** cycles controlled the paleoenvironmental changes at different timescales and influenced the enrichment of organic matter,which has implications for subsequent energy exploration.

关键词： Cyclostratigraphy Milankovitch cycle Organic matter enrichment Paleoenvironmental Ordos Basin Chang 7 Member

The control of Pleistocene palaeogeography on the distribution of sandy patches in a silty Holocene lagoon(central Netherlands)

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Journal of Palaeogeography 2022年第4期11卷 565-583页

作者： Ai-Ping Fan A.J.(Tom)van Loon ren-chao Yang College of Earth Science and Engineering Shandong University of Science and TechnologyQingdaoChina Laboratory for Marine Mineral Resources Qingdao National Laboratory for Marine Science and TechnologyQingdao 266071China

The brackish lagoon in the central part of The Netherlands was closed by a dike in 1932 and gradually changed into a *** of this lake were reclaimed and the surficial sediments of one of the polders(Noordoostpolder),reclaimed in 1942,has been investigated in detail by mapping of the walls of some1500 km of drainage ditches approx.1.4 m *** appeared that the sediments consist of an uncommonly large amount of silt,to different degrees mixed with reworked peat that had developed during the Holocene *** sandy deposits occur locally,at places that are at first sight distributed in a haphazard *** various sandy patches have different characteristics(grain-size distribution,rounding of the grains,mineral composition).These sands cannot have been introduced from the sea,nor can they have been supplied by the rivers that discharged into the lagoon,so they must have a local *** is found that several types of Pleistocene sandy or diamictic deposits below the Holocene peat and lagoonal sediments had an irregular topography and became eroded during the Holocene by wave *** resulted in sandy deposits around these Pleistocene highs,which consisted of glacial tills(boulder clays),river dunes(formed by aeolian activity along rivers under dry permafrost conditions)and coversand ridges,formed by aeolian activity in a belt between the ice margin and the more distal loess *** finding implies that palaegeographical interpretations of local grain-size anomalies in a specific deposit should not only consider facies changes due to changes in the sediment supply,but should also consider local erosion leading to the exposure of previously deposited material with a divergent composition.

关键词： Lagoonal palaeogeography Netherlands Noordoostpolder Wave erosion Abrasion Holocene

Pigment epithelium-derived factor protects retinal ganglion cells from hypoxia-induced apoptosis by preventing mitochondrial dysfunction

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International Journal of Ophthalmology(English edition) 2017年第7期10卷 1046-1054页

作者： Shu-Wei Tian Yuan ren Jin-Zhi Pei Bai-chao ren Yuan He Department of Ophthalmology the Second Affiliated Hospital of Xi’an Medical Univeristy Department of Ophthalmology the Second Affiliated Hospital of Xi’an Jiaotong University

AIM： To investigate the potential of pigment epitheliumderived factor（PEDF） to protect the immortalized rat retinal ganglion cells-5（RGC-5） exposed to Co Cl2-induced chemical hypoxia. METHODS： After being differentiated with staurosporine（SS）, RGC-5 cells were cultured in four conditions： control group cells cultured in Dulbecco ＇s modified eagle medium（DMEM） supplemented with 10% fetal bovine serum, 100 μmol/m L streptomycin and penicillin（named as normal conditions）; hypoxia group cells cultured in DMEM containing 300 μmol/m L Co Cl2; cells in the group protected by PEDF were first pretreated with 100 ng/m L PEDF for 2h and then cultured in the same condition as hypoxia group cells; and PEDF group cells that were cultured in the presence of 100 ng/m L PEDF under normal conditions. The cell viability was assessed by MTT assay, the percentage of apoptotic cells was quantified using Annexin V-FITC apoptosis kit, and intra-cellar reactive oxygen species（ROS） was measured by dichloro-dihydro-fluorescein diacetate（DCFH-DA） probe. The mitochondria-mediated apoptosis was also examined to further study the underlying mechanism of the protective effect of PEDF. The opening of mitochondrial permeability transition pores（m PTPs） and membrane potential（Δψm） were tested as cellular adenosine triphosphate（ATP） level and glutathione（GSH）. Also, the expression and distribution of Cyt C and apoptosis inducing factor（AIF） were ***： SS induced differentiation of RGC-5 cells resulting in elongation of their neurites and establishing contacts between outgrowths. Exposure to 300 μmol/m L Co Cl2 triggered death of 30% of the total cells in cultures within 24 h. At the same time, pretreatment with 100 ng/m L PEDF significantly suppressed the cell death induced by hypoxia（P〈0.05）. The apoptosis induced by treatment of Co Cl2 was that induced cell death accompanied with increasing intracellar ROS and decreasing GSH and ATP level. PEDF pretreatment suppressed these effects（P〈0.0

关键词： pigment epithelium-derived factor CoCl2 retinal ganglion cells-5 reactive oxygen species reduced glutathione hormone mitochondrial permeability transition pores membrane potential adenosine triphosphate Cyt C apoptosis-inducing factor

Artificial intelligence in small intestinal diseases:Application and prospects

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World Journal of Gastroenterology 2021年第25期27卷 3734-3747页

作者： Yu Yang Yu-Xuan Li ren-Qi Yao Xiao-Hui Du chao ren Department of General Surgery Chinese People’s Liberation Army General HospitalBeijing 100853China Trauma Research Center The Fourth Medical Center and Medical Innovation Research Division of the Chinese People‘s Liberation Army General HospitalBeijing 100048China Department of Burn Surgery Changhai HospitalNaval Medical UniversityShanghai 200433China

The small intestine is located in the middle of the gastrointestinal tract,so small intestinal diseases are more difficult to diagnose than other gastrointestinal ***,with the extensive application of artificial intelligence in the field of small intestinal diseases,with its efficient learning capacities and computational power,artificial intelligence plays an important role in the auxiliary diagnosis and prognosis prediction based on the capsule endoscopy and other examination methods,which improves the accuracy of diagnosis and prediction and reduces the workload of *** this review,a comprehensive retrieval was performed on articles published up to October 2020 from PubMed and other *** the application status of artificial intelligence in small intestinal diseases was systematically introduced,and the challenges and prospects in this field were also analyzed.

关键词： Artificial intelligence Machine learning Deep learning Prognosis prediction Small intestinal diseases

Surgical treatment for 42 patients with traumatic annular ciliochoroidal detachment

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International Journal of Ophthalmology(English edition) 2011年第1期4卷 81-84页

作者： Jian-Gang Yang, Bai-chao ren Department of Ophthalmology the Affiliated Hospital of Xi'an Medical University Xi'an 710077 Shaanxi Province China Department of Ophthalmology the Second Affiliated Hospital of Medical College Xi'an Jiaotong University Xi'an 710004 Shaanxi Province China

AIM: To analyze the clinical features of traumatic annular ciliochoroidal detachment (CCD) with ultrasound biomicroscopy (UBM) images, to investigate the surgical outcomes of ciliary body suturing and the prognostic factors. METHODS: Forty-two patients with traumatic annular CCD who had undergone ciliary body suturing were enrolled for complete ocular examinations, including visual acuity (VA), slitlamp microscopy, tonometer, indirect ophthalscopy and UBM. Comparisons of clinical features were performed among baseline and follow-ups, and the morphologic alterations on UBM images were analyzed between pre- and post-surgery. RESULTS: The mean intraocular pressure (IOP) was 5.54mmHg, and the median VA was 0.1 in traumatic eyes at baseline. The pre-surgical morphological features on UBM images consisted of supraciliochoroidal effusion (33.33%), multilayer splits (40.48%) and CCD with cyclodialysis cleft (26.19%). After surgery, the median VA was 0.4 at the final follow-up. IOPs were significantly increased, which the mean final IOP was to 10.36mmHg(P< 0.01). UBM images displayed complete reattachment in 40.48% of patients, partial reattachment in 50.00% of patients and 360-degree detachment in 9.52% of patients. Analyzing the prognostic factors, the significant factors were duration, VA at baseline, ocular laterality (P<0.01), gender, age and the presence of hypotonous maculopathy (P<0.05). CONCLUSION: Ciliary body suturing is the optimized procedure for traumatic annular CCD. UBM is a useful equipment for diagnosis and monitoring post-surgical morphological changes. The periodical detection of TOP and UBM is necessary for the observation of surgical outcomes.

关键词： ciliochoroidal detachment intraocular pressure ultrasound biomicroscopy trauma surgery

Blind Wideband Beamforming Algorithm Based on the Uncertainty Set

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Journal of Geodesy and Geoinformation Science 2021年第2期4卷 72-78页

作者： chao ren Zhengxuan ZHANG Enyuan TU BDStar Navigation Co. Ltd.Beijing 100094China

Without prior knowledge,the steering vector estimation error of the desired signal will deteriorate the beamforming performance to some *** solve this problem,a space-time blind wideband beamforming algorithm based on the uncertainty set is *** of all,based on the space-time filtering model,the spherical constraint set is designed according to the uncertainty of the estimation error of the space-time steering ***,the method of wideband beamforming under multiconstraints in the frequency domain is derived,and the calculation of parameters of steering vector estimation error and loading factor are given in ***,a blind broadband beamforming algorithm combined with the CAB algorithm is *** improvement of the output signal-to-noise ratio is quantitatively analyzed by computer simulation to verify the correctness and robustness of the algorithm.

关键词： Space-time Adaptive Filtering(STAP) CAB blind wideband beamforming uncertainty set constraints