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膳食减糖策略有效性的证据图研究

中国循证医学杂志 2024年第5期24卷 591-597页

作者：胡晓晔王永盛年涛杨克虎李秀霞兰州大学卫生技术评估中心/兰州大学循证社会科学研究中心兰州大学公共卫生学院兰州730000 兰州大学循证医学中心兰州大学基础医学院兰州730000 甘肃省循证医学与临床转化重点实验室兰州730000

目的通过证据图方法系统识别、描述和评价膳食减糖策略的有效性。方法计算机检索CNKI、WanFang Data、VIP、CBM、PubMed、Embase、Web of Science和Cochrane Library数据库,搜集膳食减糖策略有效性的系统评价/Meta分析,检索时限均从... 详细信息

目的通过证据图方法系统识别、描述和评价膳食减糖策略的有效性。方法计算机检索CNKI、WanFang Data、VIP、CBM、PubMed、Embase、Web of Science和Cochrane Library数据库,搜集膳食减糖策略有效性的系统评价/Meta分析,检索时限均从建库至2022年11月10日。采用AMSTAR-2对纳入研究进行方法学质量评估,利用Excel 2019软件设计数据提取表,提取相关关键信息,采用气泡图综合呈现干预类型、系统评价/Meta分析纳入研究数量、结论分类等信息。结果共纳入11篇系统评价/Meta分析。纳入研究根据不同干预措施特点总结为10项干预类型,其中行为改变策略、健康饮食、糖税、物质替代、糖标签、社区干预的研究结局表现出明显有效性,而社会认知模型、减糖指南、健康素养、知识态度行为模型则少有明确的有益效果,说明在理论基础上的干预类型收效甚微。结论目前证据图显示行为改变策略、健康饮食、糖税、物质替代、糖标签、社区干预具有有效性,同时也存在健康素养、知识态度行为模型等有效性不明确的减糖策略和干预空白。且基于理论方面的膳食减糖策略的有效性证据相对匮乏,未来仍需高质量的研究进一步探讨。

关键词：膳食减糖策略系统评价有效性证据图

库车坳陷深层盐下白垩系储集层氯盐分布模式及意义

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新疆石油地质 2024年第1期45卷 1-12页

作者：罗丹婷罗静兰邓超年涛韩剑发程道解袁龙西北大学大陆动力学国家重点实验室西安710069 西北大学地质学系西安710069 西安石油大学地球科学与工程学院西安710065 中国石油塔里木油田分公司勘探开发研究院新疆库尔勒841000 中国石油集团测井有限公司地质研究院西安710077

库车坳陷克拉苏构造带盐下白垩系巴什基奇克组储集层分布了一批高产、稳产的天然气藏群,其储集层为超深、高温、超压致密砂岩储集层,孔隙度越高,氯盐含量越高,储集层视电阻率越低,储集层中氯盐的分布严重影响流体识别,其对盐下致密砂岩... 详细信息

库车坳陷克拉苏构造带盐下白垩系巴什基奇克组储集层分布了一批高产、稳产的天然气藏群,其储集层为超深、高温、超压致密砂岩储集层,孔隙度越高,氯盐含量越高,储集层视电阻率越低,储集层中氯盐的分布严重影响流体识别,其对盐下致密砂岩物性的影响较明显。利用岩心观察、铸体薄片、扫描电镜、氯盐含量、常规测井曲线分析等,系统分析了库车坳陷盐下白垩系巴什基奇克组储集层氯盐的分布特征。根据氯盐含量、电阻率、氯盐来源等的差异,提出盐下储集层氯盐分布具有顶渗、侧渗和局部封存3种模式。顶渗模式与侧渗模式的电阻率仅受氯盐含量的影响,顶渗模式储集层氯盐含量呈垂向分带特征,随氯盐含量的降低,电阻率升高;侧渗模式储集层氯盐含量呈横向分带特征,电阻率自构造带边缘向中心表现出由高到低再升高的趋势;局部封存模式电阻率受应力和氯盐含量的共同影响,氯盐含量分布具有偶发性,电阻率变化幅度大。根据测井响应特征划分了各模式的分布段序列,顶渗模式自上而下发育盐层段、泥岩封隔段、饱和氯盐强影响段、未饱和氯盐强影响段、未饱和氯盐影响过渡段和氯盐未影响段;侧渗模式在顶渗模式基础上多发育过饱和氯盐影响段;局部封存模式从上到下划分为盐层段、泥岩封隔段、强挤压应力氯盐未影响段、氯盐应力混合影响段和氯盐应力未影响段。

关键词：库车坳陷深层白垩系盐下储集层高温高压氯盐含量测井响应氯盐分布模式

A pilot field-scale study on biotrickling filter treatment of NH_3-containing odorous gases from organic waste composting plants

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2010年第9期11卷 629-637页

作者： nian-tao XUE Qun-hui WANG Chuan-fu WU Xiao-hong SUN Wei-min XIE Department of Environmental Engineering School of Civil and Environmental Engineering University of Science and Technology Beijing Beijing 100083 China Beijing Agricultural Biotechnology Centre Be(jing Academy of Agriculture and Forestry Sciences Beijing 100089 China Japan TOHIN Company Group Profile Tokyo 346-0028 Japan

The use of a biotrickling filter was investigated for a pilot field-scale elimination of NH3 gas and other odorous gases from a composting plant in Tongzhou District, Beijing. The inlet gas flow rate was 3500 m3/h and NH3 concentration fluctuated between 2.76–27.84 mg/m3, while the average outlet concentration was 1.06 mg/m3 with an average of 94.9% removal. Critical volumetric loading (removal efficiency=100%) was 11.22 g-N/(m3·h). The odor concentration removal was 86.7%. NH3 removal efficiency decreased as the free ammonia (FA) in the trickling liquid increased. The pressure drop was maintained at about 50 Pa/m and was never more than 55 Pa/m. During the experiment, there was neither backflushing required nor any indication of clogging. Overall, the biotrickling filter was highly efficient and cost-effective for the simultaneous biodegradation of NH3 and other odorous gases from composting, suggesting the possibility of treating odorous gases at the industrial level.

关键词： Ammonia Biotrickling filter Odor Organic waste composting Pilot field-scale study Trickling liquid

Failure mechanism and influencing factors of cement sheath integrity under alternating pressure

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Petroleum Science 2023年第4期20卷 2413-2427页

作者： Kuan-Hai Deng nian-tao Zhou Yuan-Hua Lin Yan-Xian Wu Jie Chen Chang Shu Peng-Fei Xie State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation(Southwest Petroleum University) ChengduSichuan610500China Engineering Technology Research Institute PetroChina Xinjiang Oilfield CompanyKaramayXinjiang834000China CNPC Xibu Drilling Engineering Company Limited UrumqiXinjiang830000China Engineering Technology Research Institute PetroChina Southwest Oil&Gas Field CompanyChengduSichuan610066China

The failure of cement sheath integrity can be easily caused by alternating pressure during large-scale multistage hydraulic fracturing in shale-gas *** elastic-plastic mechanical model of casing-cement sheath-formation(CSF)system under alternating pressure is established based on the Mohr-Coulomb criterion and thick-walled cylinder theory,and it has been solved by MATLAB programming combining global optimization algorithm with Global *** failure mechanism of cement sheath integrity is investigated,by which it can be seen that the formation of interface debonding is mainly related to the plastic strain accumulation,and there is a risk of interface debonding under alternating pressure,once the cement sheath enters plasticity whether in shallow or deep well *** matching relationship between the mechanical parameters(elastic modulus and Poisson's ratio)of cement sheath and its integrity failure under alternating pressure in whole well sections is studied,by which it has been found there is a“critical range”in the Poisson's ratio of cement *** the Poisson's ratio is below the“critical range”,there is a positive correlation between the yield internal pressure of cement sheath(SYP)and its elastic ***,when the Poisson's ratio is above the“critical range”,there is a negative *** elastic modulus of cement sheath is closely related to its Poisson's ratio,and restricts each *** and reasonable matching between mechanical parameters of cement sheath and CSF system under different working conditions can not only reduce the cost,but also protect the cement sheath integrity.

关键词： Casing-cement sheath-formation system Mechanical model Matching relationship Cement sheath integrity Critical range Mechanical parameters

A Smart Molecule Showing Spin Crossover Responsive Aggregation-Induced Emission

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CCS Chemistry 2023年第4期5卷 915-924页

作者： Cheng Yi Yin-Shan Meng Liang Zhao nian-tao Yao Qiang Liu Wen Wen Rui-Xia Li Yuan-Yuan Zhu Hiroki Oshio tao Liu State Key Laboratory of Fine Chemicals Dalian University of TechnologyDalian 116024Liaoning Anhui Key Laboratory of Advanced Catalytic Materials and Reaction Engineering School of Chemistry and Chemical EngineeringHefei University of TechnologyHefei 230009Anhui

The utilization of spin crossover(SCO)to modulate the luminescence properties in smart multifunctional materials and multichannel sensors is ***,it is challenging to build a strong coupling between SCO and luminescence in one ***,we present a mononuclear compound[Fe(tpe-abpt)_(2)(SeCN)_(2)]·4DMF(1·4DMF,tpe-abpt:(4-(1,1,2,2-tetraphenylethene))-N-(3,5-bis(pyridin-2-yl)-4H-1,2,4-triazol-4yl)methanimine)showing aggregation-induced emission(AIE)and thermally induced SCO ***-temperature single-crystal structural analysis reveals that SCO changes the number of pathways and strength of intermolecular interactions,resulting in deactivation of nonradiative decay and significant enhancement of *** photoluminescence(PL)intensity of 1·4DMF exhibited a fivefold increase upon the spin transition from the low-spin to the high-spin *** contrast with the current strategy of controlling the Förster resonance energy transfer(FRET)process by utilizing SCO to tune the overlap degree between the emission band of the luminophore and UV–vis absorption band of high-spin and low-spin states,we developed a new approach to tune the intermolecular interactions between AIE luminogens(AIEgens)by utilizing a subtle SCO-induced structural transformation,therefore leading to effective coupling between SCO and luminescence and a significant change in luminescence upon *** results provide a rational strategy to build smartmultifunctionalizedmaterials with remarkably synergetic SCO and luminescence.

关键词： spin crossover aggregation-induced emission synergetic property intermolecular interactions switchable materials

Effects of Transgenic Tobacco Plants Expressing ACA Gene from Amaranthus caudatus on the Population Development of Myzus persicae

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Acta Botanica Sinica 2004年第9期46卷 1100-1105页

作者： GUOHong-nian JIAYan-tao ZHOUYong-Gang ZHANGZhen-Shan OUYANGQing JIANGYing TIANYing-Chuan StateKeyLaboratoryofPlantGenomics InstituteofMicrobiologyTheChineseAcademyofSciencesBeijing100080China

To investigate the possible function of the agglutinin from Amaranthus caudatus L. (ACA) in plant defending against insect pests, ACA cDNA was cloned by RT-PCR and the 5' and 3' sequences were confirmed by rapid amplification of cDNA ends (RACE). The phloem-specific expression vector of ACA gene, pBCACAc, was constructed based on the plant binary vector pBC438 and transfered into tobacco plants via Agrobacterium-mediated transformation method. Results from PCR and Southern blotting analysis showed that AOA gene was integrated into the genomes of transformed plants and the transgene integration varied from one to four estimated copies per genome. Western blotting analysis indicated that ACA gene was transcribed and translated in the transgenic plants. The bioassay of Myzus persicae Sulzer on detached leaves demonstrated that the 78% transgenic tobacco plants displayed an average aphid-resistant rate of more than 75%. Some apterous progeny of M. persicae were found dead on the resistant plants. These results indicate that ACA gene should be an effective aphid-resistant gene and could be valuable for application in crop breeding for aphid resistance.

关键词：转基因烟草植株表达苋属 ACA基因蚜虫抗性

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可变刚度和阻尼的半主动馈能悬架隔振性能

吉林大学学报（工学版） 2017年第3期47卷 701-708页

作者：王军年叶涛孙文王庆年吉林大学汽车仿真与控制国家重点实验室长春130022 新加坡国立大学机械工程系新加坡117575

首先,以单自由度1/4车辆模型为研究对象,对其地面激励和外力激励幅频特性进行分析。然后,基于天棚控制方法设计了开关阻尼控制算法,定义了9种控制模式。最后,以正弦激励和随机激励作为输入,采用Matlab/Simulink进行性能仿真对比分析,结... 详细信息

首先,以单自由度1/4车辆模型为研究对象,对其地面激励和外力激励幅频特性进行分析。然后,基于天棚控制方法设计了开关阻尼控制算法,定义了9种控制模式。最后,以正弦激励和随机激励作为输入,采用Matlab/Simulink进行性能仿真对比分析,结果表明:两个阻尼器都是on-off状态对应的工作模式,可以使悬架系统表现出良好的隔振性能。

关键词：车辆工程可变刚度和阻尼半主动悬架开关阻尼控制

Development and validation of a nomogram model for predicting the risk of gallstone recurrence after gallbladder-preserving surgery

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Hepatobiliary & Pancreatic Diseases International 2024年第3期23卷 288-292页

作者： Peng Liu Yong-Wei Chen Che Liu Yin-tao Wu Wen-Chao Zhao Jian-Yong Zhu Yang An nian-Xin Xia Faculty of Hepato-Pancreato-Biliary Surgery the First Medical CenterChinese PLA General HospitalBeijing 100853China Institute of Hepatobiliary Surgery of Chinese PLA Beijing 100853China Key Laboratory of Digital Hepetobiliary Surgery of Chinese PLA Beijing 100853China

Background:The high incidence of gallstone recurrence was a major concern for laparoscopic gallbladderpreserving *** study aimed to investigate the risk factors for gallstone recurrence after gallbladder-preserving surgery and to establish an individualized nomogram model to predict the risk of gallstone ***:The clinicopathological and follow-up data of 183 patients who were initially diagnosed with gallstones and treated with gallbladder-preserving surgery at our hospital from January 2012 to January 2019 were retrospectively *** independent predictive factors for gallstone recurrence following gallbladder-preserving surgery were identified by multivariate logistic regression analysis.A nomogram model for the prediction of gallstone recurrence was constructed based on the selected *** C-index,receiver operating characteristic(ROC)curve and calibration curve were used to evaluate the predictive power of the nomogram model for gallstone ***:During the follow-up period,a total of 65 patients experienced gallstone recurrence,and the recurrence rate was 35.5%.Multivariate logistic regression analysis revealed that the course of gallstones>2 years[odds ratio(OR)=2.567,95%confidence interval(CI):1.270-5.187,P=0.009],symptomatic gallstones(OR=2.589,95%CI:1.059-6.329,P=0.037),multiple gallstones(OR=2.436,95%CI:1.133-5.237,P=0.023),history of acute cholecystitis(OR=2.778,95%CI:1.178-6.549,P=0.020)and a greasy diet(OR=2.319,95%CI:1.186-4.535,P=0.014)were independent risk factors for gallstone recurrence after gallbladder-preserving surgery.A nomogram model for predicting the recurrence of gallstones was established based on the above five *** results showed that the C-index of the nomogram model was 0.692,suggesting it was valuable to predict gallstone ***,the calibration curve showed good consistency between the predicted probability and actual ***:The nomogram model for

关键词： Gallstone Gallbladder-preserving surgery Recurrence Risk factors Nomogram

Room-temperature production of silver-nanofiber film for large-area, transparent and flexible surface electromagnetic interference shielding

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npj Flexible Electronics 2019年第1期3卷 56-63页

作者： Sen Lin Haiyang Wang Fan Wu Qingmin Wang Xiaopeng Bai Di Zu Jianan Song Dong Wang Zhenglian Liu Ziwei Li nian tao Kai Huang Ming Lei Bo Li Hui Wu State Key Laboratory of Information Photonics and Optical Communications and School of Science Beijing University of Posts and Telecommunications100876 BeijingChina State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua University100084 BeijingChina Advanced Materials Institute Shenzhen Graduate SchoolTsinghua University518055 ShenzhenChina School of Mechanical Engineering Nanjing University of Science&Technology210094 NanjingChina

A kind of pollution known as electromagnetic interference(EMI),which results from ubiquitous usage of various electronic communication and military radar equipment,has been receiving increasing attention ***,large-area EMI shielding on transparent and/or curved surfaces,including building windows,curved glass wall,and special requirements spaces(SRSs),remains hard to *** this paper,a silver nanofiber(AgNF)based flexible and transparent EMI shielding film was successfully assembled via a room-temperature roll-to-roll production *** transparent application scenario,AgNF with 89%transmittance in visible range and 1μm thickness shows~20 dB shielding efficiency(EMI SE).On the other hand,total shielding(>50 dB)is obtained when the thickness of AgNF increases to 10μm,while its transmittance in visible range remains higher than 75%.Considering the facile and scale-free production technology,this material can be readily applied in large-scale,transparent,and/or SRSs EMI shielding.

关键词： transparent silver film