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苏东气藏地层压力与单位压降产气量分布特征分析

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重庆科技学院学报（自然科学版） 2019年第4期21卷 51-55页

作者：成育红张一果杨洋封莉邓宝康中国石油长庆油田公司第五采气厂西安710021 四川奥吉特油田科技开发有限公司成都610041

苏东地区大多数井采用快速投产、井下节流等新工艺,利用常规的压力动态监测方法难以准确获取地层中部的压力。结合苏东气藏的实际情况,建立了新的地层压力评价方法,将表面套管压力转化为地层压力,应用于苏东气藏地层压力及单位压降产气... 详细信息

苏东地区大多数井采用快速投产、井下节流等新工艺,利用常规的压力动态监测方法难以准确获取地层中部的压力。结合苏东气藏的实际情况,建立了新的地层压力评价方法,将表面套管压力转化为地层压力,应用于苏东气藏地层压力及单位压降产气量分布特征分析。

关键词：苏东气藏地层压力套压压降产气量

A performance evaluation of remotely sensed sea surface salinity products in combination with other surface measurements in reconstructing three-dimensional salinity fields

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Acta Oceanologica Sinica 2017年第7期36卷 15-31页

作者： CHEN Jian YOU Xiaobao XIAO yiguo zhang Ren WANG Gongjie BAO Senliang Beijing Institute of Applied Meteorology Beijing 100029China Institute of Meteorology and Oceanography PLA University of Science and TechnologyNanjing 211101China

Several remotely sensed sea surface salinity（SSS） retrievals with various resolutions from the soil moisture and ocean salinity（SMOS） and Aquarius/SAC-D missions are applied as inputs for retrieving salinity profiles（S） using multilinear regressions. The performance is evaluated using a total root mean square（RMS） error, different error sources, and the feature resolutions of the retrieved S fields. In the mixed layer of the salinity, the SSS-S regression coefficients are uniformly large. The SSS inputs yield smaller RMS errors in the retrieved S with respect to Argo profiles as their spatial or temporal resolution decreases. The projected SSS errors are dominant, and the retrieved S values are more accurate than those of climatology in the tropics except for the tropical Atlantic, where the regression errors are abnormally large. Below that level, because of the influence of a sea level anomaly, the areas of high-accuracy S values shift to higher latitudes except in the high-latitude southern oceans, where the projected SSS errors are abnormally large. A spectral analysis suggests that the CATDS-0.25° results are much noisier and that the BEC-L4-0.25° results are much smoother than those of the other retrievals. Aquarius-CAP-1° generates the smallest RMS errors, and Aquarius-V2-1° performs well in depicting large-scale phenomena. BEC-L3-0.25°,which has small RMS errors and remarkable mesoscale energy, is the best fit for portraying mesoscale features in the SSS and retrieved S fields. The current priority for retrieving S is to improve the reliability of satellite SSS especially at middle and high latitudes, by developing advanced algorithms, combining both sensors, or weighing between accuracy and resolutions.

关键词： soil moisture and ocean salinity Aquarius sea surface salinity vertical retrieval feature resolution

CRTC2 modulates hepatic SREBPlc cleavage by controlling Insig2a expression during fasting

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Protein & Cell 2018年第8期9卷 729-732页

作者： Yuanyuan zhang Yi Liu Liqun Chen yiguo Wang Jinbo Han MOE Key Laboratory of Bioinformatics Tsinghua-Peking Center for Life Sciences School of Life Sciences Tsinghua University Beijing 100084 China School of Pharmaceutical Sciences Tsinghua University Beijing 100084 China

Dear Editor, Dysregulation of hepatic lipid and glucose production results in obesity, diabetes and nonalcoholic fatty liver disease. De novo lipogenesis and gluconeogenesis in the liver con- tribute, at least in part, to the dynamic homeostasis of lipid and glucose levels （Rui, 2014; Han and Wang, 2017）. These processes are regulated at the transcriptional level by dif- ferent transcription factors Jn response to various environ- mental cues, including hormones, nutrition and stress. Regulators of lipogenesis include the sterol regulatory ele- ment-binding proteins （SREBPs）, which are members of the basic helix-loop-helix leucine zipper transcription factor family （Goldstein et al., 2006）. There are three closely rela- ted SREBPs, SREBPla, SREBPlc and SREBP2, among which SREBPlc and SREBP2 are the major isoforms expressed in the liver. SREBPlc mainly regulates fatty acid synthesis.

关键词： ELEMENT-BINDING PROTEINS LIPID-METABOLISM INSULIN CREB LIVER SENSITIVITY LIPOGENESIS SENSORS MICE

Toward Quantifying the Increasing Accessibility of the Arctic Northeast Passage in the Past Four Decades

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Advances in Atmospheric Sciences 2023年第12期40卷 2378-2390,I0016-I0018页

作者： Chao MIN Xiangying ZHOU Hao LUO Yijun YANG yiguo WANG Jinlun zhang Qinghua YANG School of Atmospheric Sciences Sun Yat-sen Universityand Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai)Zhuhai 519082China Department of Atmospheric and Oceanic Sciences Fudan UniversityShanghai 200438China Nansen Environmental and Remote Sensing Center and Bjerknes Centre for Climate Research 2007 BergenNorway Polar Science Center Applied Physics LabUniversity of WashingtonSeattleWA 98105USA

Sea ice,one of the most dominant barriers to Arctic shipping,has decreased dramatically over the past four *** maritime transport is hereupon growing in recent *** produce a long-term assessment of trans-Arctic accessibility,we systematically revisit the daily Arctic navigability with a view to the combined effects of sea ice thickness and concentration throughout the period 1979−*** general trends of Navigable Windows(NW)in the Northeast Passage show that the number of navigable days is steadily growing and reached 89±16 days for Open Water(OW)ships and 163±19 days for Polar Class 6(PC6)ships in the 2010s,despite high interannual and interdecadal variability in the *** consecutive NWs have emerged annually for both OW ships and PC6 ships since 2005 because of the faster sea ice *** the 1980s,the number of simulated Arctic routes has continuously increased,and optimal navigability exists in these years of record-low sea ice extent(e.g.,2012 and 2020).Summertime navigability in the East Siberian and Laptev Seas,on the other hand,varies dramatically due to changing sea ice *** systematic assessment of Arctic navigability provides a reference for better projecting the future trans-Arctic shipping routes.

关键词： Arctic sea ice Arctic shipping climate change human-environment

The study of artificial intelligence for predicting land use changes in an arid ecosystem

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Journal of Geographical Sciences 2022年第4期32卷 717-734页

作者： YU Yang CAO yiguo HOU Dongde DISSE Markus BRIEDEN Andreas zhang Haiyan YU Ruide State Key Laboratory of Desert and Oasis Ecology Xinjiang Institute of Ecology and GeographyCASUrumqi 830011China Advanced Research Institute Southwest University of Political Science&LawChongqing 401120China Chair of Hydrology and River Basin Management Technical University of MunichMunich 80333Germany Chair of Statistics and Risk Management Universitaet der Bundeswehr MuenchenNeubiberg D-85577Germa ny

During the 21 st century,artificial intelligence methods have been broadly applied in geosciences to simulate complex dynamic ecosystems,but the use of artificial intelligence(AI)methods to reproduce land-use/cover change(LUCC)in arid ecosystems remains *** paper presents a hybrid modeling approach to understand the complexity in *** logic,equation-based systems,and expert systems are combined to predict LUCC as determined by water resources and other *** driving factors of LUCC in this study include climate change,ecological flooding,groundwater conditions,and human *** increase of natural flooding was found to be effective in preventing vegetation *** are sensitive under different climate projections of RCP2.6,RCP4.5,and *** results indicate that the increase of precipitation is not able to compensate for the additional evaporation losses resulting from temperature *** results indicate that grassland,shrub,and riparian forest regions will shrink in this study *** change in grasslands has a strong negative correlation with the change in groundwater salinity,whereas forest change had a strong positive correlation with ecological *** application of artificial intelligence to study LUCC can guide land management policies and make predictions regarding land degradation.

关键词： artificial intelligence land-use/cover change fuzzy logic expert systems land degradation arid ecosystem

Protein and RNA expression of acid-sensing ion channels 2 and 3 in myocardial ischemia rats induced by isoproterenol

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Journal of Traditional Chinese Medicine 2015年第2期35卷 222-226页

作者： Wang Shudong zhang Lide Dong Baoqiang zhang Wenshun Ho Chin Ee Guo Na Chen yiguo College of Acupuncture and Moxibustion Liaoning University of Traditional Chinese Medicine Singapore Thong Chai Medicial Insititution The outpatient department of Traditional Chinese Medicine

OBJECTIVE:To investigate the impact of electro-acupuncture at the Neiguan(PC 6) acupoint on protein and RNA expression of acid-sensing ion channel 2(ASIC2) and ASIC3 in myocardial ischemia ***:Fifty male Sprague-Dawley rats were used,weighing(230 ± 50) *** rats were randomized into a normal group A,model group B,Neiguan(PC 6) group C,Lieque(LU 7) group D,and A-shi points group *** were 10 rats in each *** were continuously administered 85 mg/kg intravenous isoproterenol daily to establish the *** modeled rats in groups C,D,and E were given electro-acupuncture *** group of rats was sacrificed with chloral hydrate(1 mL/100 g) intraperitoneal *** left ventricular myocardium was extracted and placed at- 70 ℃ until *** blot analysis and real-time PCR were performed to assay protein and RNA expressions of ASIC2 and ASIC3,*** changes in RNA expression were quantified with the 2~^(-△△Ct) *** samples were drawn from the aorta abdominalis and tested for creatine kinase-MB(CK-MB) and lactate dehydrogenase(LDH) levels using enzyme-linked immunosorbent ***:Myocardial ischemia rats given electro-acupuncture at the Neiguan(PC 6) acupoint had significantly lower protein and RNA expression of ASIC2 and ASIC3,and CK-MB and LDH levels,compared with model rats(P < 0.01).CONCLUSION:Electro-acupuncture at the Neiguan(PC 6) acupoint can not only decrease the protein and RNA expression of ASIC2 and ASIC3,but also inhibit the opening of ASICs and reduce the cardiomyocyte damage in myocardial ischemia rats.

关键词： Point PC 6(Neiguan) Point LU 7(Lieque) Acid sensing ion channels Myocardial ischemia

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堤防工程汛期实时安全风险综合评估

南昌大学学报（工科版） 2024年第1期46卷 83-88页

作者：万怡国雷声王萱子张磊张洁涂宜昌江西省水利科学院江西南昌330029 江西省鄱阳湖流域生态水利技术创新中心江西南昌330029 江西省水利厅江西南昌330029

在出现洪涝灾害时,第一时间发现并及时处置险情是应急抢险的关键,如何提前配置防汛人力、物力等,一直是防汛指挥部门亟待解决的问题。为实时掌握堤防工程安全风险情况,结合一线防汛抢险实践经验,提出了一套数量适宜、指标内容易获取的... 详细信息

在出现洪涝灾害时,第一时间发现并及时处置险情是应急抢险的关键,如何提前配置防汛人力、物力等,一直是防汛指挥部门亟待解决的问题。为实时掌握堤防工程安全风险情况,结合一线防汛抢险实践经验,提出了一套数量适宜、指标内容易获取的堤防工程安全风险评价指标体系,采用层次分析法、模糊综合评价法建立了评估模型,给定了评估标准,划分了堤防工程风险等级,并选取了2020年江西省遭受特大洪水引起的堤防险情进行典型案例分析。结果表明:选取的未溃口与发生溃口的堤防,其安全风险综合评估情况与堤防后续状况吻合性较好,堤防工程安全风险综合评估模型可为防汛指挥部门部署人力、物力等提供支撑。

关键词：堤防工程汛期实时安全风险综合评估

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基于多因子约束P中值模型的充电桩布局优化研究

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北京交通大学学报 2021年第3期45卷 93-99页

作者：陈振王伟贤李卓群张祎果孙舟孙绪坤国网北京市电力公司电力科学研究院北京100085 中国矿业大学(北京)应急管理与安全工程学院北京100083

合理、高效的供电网络配置是降低充电桩火灾危险性,确保电动汽车安全推广的重要保障.针对充电桩布局中距离远、负载大的问题,首先,通过分析电动汽车用户充电时的效率导向,在考虑传统配置优化模型资源分布不均衡的基础上,利用充电需求、... 详细信息

合理、高效的供电网络配置是降低充电桩火灾危险性,确保电动汽车安全推广的重要保障.针对充电桩布局中距离远、负载大的问题,首先,通过分析电动汽车用户充电时的效率导向,在考虑传统配置优化模型资源分布不均衡的基础上,利用充电需求、平均续航时间以及服务能力等参数对其配置公平性进行约束,建立了以出行效率和服务能力为求解思想的多因子约束P中值模型.然后,以该模型特征为依据,选取贪心算法对模型进行启发式求解,通过Matlab分段计算距离矩阵,构造各阶段局部最优解,在局部最优解的基础上迭代计算进而得到全局最优解.最后,通过实例进行验证,验证结果表明:模型优化后各布局点的资源均衡性和充电便捷性均得到显著提升,有效改善了充电需求点对供电配置网络的负载压力.

关键词：电动汽车充电桩多因子约束P中值模型布局优化

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动物源性食品安全检测技术探析

现代畜牧科技 2024年第2期 115-117页

作者：戴义国刘光辉颜丙利张江川滨州职业学院山东滨州256600

该文对动物源性食品安全检测技术进行了探析,主要从目前常用的技术手段、存在的问题以及未来发展方向等方面进行研究和分析。研究发现,传统的检测方法在速度、准确性和效率等方面存在一定的局限性。发展基于分子生物学、光学和化学等新... 详细信息

该文对动物源性食品安全检测技术进行了探析,主要从目前常用的技术手段、存在的问题以及未来发展方向等方面进行研究和分析。研究发现,传统的检测方法在速度、准确性和效率等方面存在一定的局限性。发展基于分子生物学、光学和化学等新兴技术的检测手段成为未来的发展趋势。旨在提供一些有关动物源性食品安全检测技术的参考,以便相关机构和研究者进一步提高食品安全水平。

关键词：动物源性食品安全检测技术手段问题发展方向