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基于正交实验法表面活性剂驱注入参数优化分析
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作者 刘勇 黎孝奎 +2 位作者 赵丽 阿曼古丽·阿西木 丛苏男 《应用化工》 CAS CSCD 北大核心 2018年第S02期248-252,共5页
针对低渗透油田注水开发过程中普遍存在注水压力高、注水困难等问题,室内实验研究主要集中在表面活性剂的性能评价和单一注入参数优化,没有考虑表面活性剂驱不同注入参数对降压效果和驱油效果的综合影响。利用新木油田木118区块特低渗... 针对低渗透油田注水开发过程中普遍存在注水压力高、注水困难等问题,室内实验研究主要集中在表面活性剂的性能评价和单一注入参数优化,没有考虑表面活性剂驱不同注入参数对降压效果和驱油效果的综合影响。利用新木油田木118区块特低渗透油藏天然岩心和适用该区块甜菜碱2#(质量分数为0.05%)为主的复合表面活性剂体系,选择渗透率、注入时机、注入段塞、注入速度4个因素设计4因素3水平正交实验,采用SPSS18.0对正交实验数据进行极差分析和方差分析,优化了适用研究区块复合表面活性剂驱注入参数,确定了影响降压率和采收率的主次因素,结果表明,影响降压效果的显著因素是渗透率,渗透率越大,复合表面活性剂体系降压率越大;影响采收率的显著因素是注入段塞和注入速度,注入段塞越大,复合表面活性剂体系采收率越高。 展开更多
关键词 注入段塞 注入速度 注入时机 方差分析 正交试验
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NJG型满装圆柱滚子轴承外圈滚道直径公差的确定
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作者 赵丽 王学辉 《轴承》 北大核心 2018年第5期12-13,33,共3页
介绍了NJG型满装圆柱滚子轴承与滚子装配有关的主要结构参数尺寸及公差的计算方法,并推导了外圈滚道直径公差的计算方法。经验证,轴承合套率达到90%以上,装配后的轴承旋转灵活,满足了工程应用需求。
关键词 满装圆柱滚子轴承 外圈滚道 直径公差 自锁量
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在吐鲁番地区发现的一些古代物品 被引量:2
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作者 杨军涛(译) +1 位作者 李新东(译) 赵莉(审校) 《吐鲁番学研究》 2018年第2期122-128,共7页
1909-1910年俄罗斯新疆探险考察队通过发掘和购买获得了数量众多的物品,其中还有得自Н·Н·克罗特科夫所购买的吐鲁番古物,在写出详细报告前将延后系统公布,我们在这里给出一些实物照片,作为对格伦威德尔教授出版物的补充,特... 1909-1910年俄罗斯新疆探险考察队通过发掘和购买获得了数量众多的物品,其中还有得自Н·Н·克罗特科夫所购买的吐鲁番古物,在写出详细报告前将延后系统公布,我们在这里给出一些实物照片,作为对格伦威德尔教授出版物的补充,特别是对冯·勒柯克博士非常精美的古文物图集进行补充。 展开更多
关键词 吐鲁番地区 物品 古代 俄罗斯 出版物 古文物
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Analysis of Related Risk Factors of Recurrence in Patients with Hyperlipidemic Acute Pancreatitis
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作者 zhaoli 《外文科技期刊数据库(文摘版)医药卫生》 2022年第2期030-033,共4页
After the initial cure of hyperlipidemic acute pancreatitis (HLAP), 16.0%~49.2% of patients will relapse. A large number of studies have shown that compared with other types of pancreatitis, HLAP has more complication... After the initial cure of hyperlipidemic acute pancreatitis (HLAP), 16.0%~49.2% of patients will relapse. A large number of studies have shown that compared with other types of pancreatitis, HLAP has more complications, more dangerous condition, longer course of disease and higher recurrence rate. Foreign studies have shown that smoking, high triglyceride levels and unqualified triglyceride control are the risk factors for the recurrence of HLAP. 展开更多
关键词 HYPERLIPIDEMIA acute pancreatitis PATIENT RECURRENCE risk factors
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Baoting Merges into "Big Sanya" under the Background of Hainan Free Trade Port Construction ——the Path Choice of Tourism Economic Circle
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作者 LIGuolong HUANGKaiqing zhaoli 《外文科技期刊数据库(文摘版)经济管理》 2022年第4期068-072,共5页
In 2018, at the celebration of the 30th anniversary of Hainan's establishment of a provincial special economic zone, Hainan solemnly announced that it "decided to support the construction of a free trade pilo... In 2018, at the celebration of the 30th anniversary of Hainan's establishment of a provincial special economic zone, Hainan solemnly announced that it "decided to support the construction of a free trade pilot zone on the entire island of Hainan, to support Hainan in gradually exploring and steadily promoting the construction of a free trade port with Chinese characteristics, and to establish a free trade port policy and system system step by step." In order to further guarantee the orderly progress of the construction of Hainan free trade port in all aspects, the CPC Central Committee and the State Council issued the "Master Plan for the Construction of Hainan Free Trade Port" and announced it to the whole society. This fully demonstrates the Party Central Committee's confidence and determination in the development of Hainan free trade port, and it is also a scientific decision made by the Party Central Committee during a century-long change and two critical periods of a century-long struggle. The "Master Plan for the Construction of Hainan Free Trade Port" marks that the construction of Hainan free trade port has entered the formal implementation stage. In order to thoroughly implement the specific requirements of the Master Plan for the Construction of Hainan Free Trade Port, Hainan Province has actively implemented the various provisions of the Master Plan, and in accordance with the Law of the People's Republic of China on Hainan Free Trade Port, has promoted the construction of a free trade port with Chinese characteristics in an orderly manner in accordance with the law. During the critical period of the construction of Hainan free trade port, the Hainan provincial government, based on the reality of Hainan's development, adhered to systematic thinking and scientific planning. According to the tasks and objectives of the long-term construction of the free trade port, the Hainan provincial government held the 9th plenary session of the 7th provincial party Committee at an important historical moment. At this meeting, the "Proposal of the CPC Hainan provincial party Committee on the 14th five-year plan for national economic and social development and the 2035 long-term target" was considered and passed. In the draft of the Proposal, the Hainan Provincial Party Committee has formulated a scientific development plan based on the major strategic opportunities for the construction of a free trade port in Hainan and the actual economic development in Hainan. It has vigorously developed the "Haicheng Wending" economic zone and the "Big Sanya" tourism economic circle, giving full play to the leading role of both Haikou and Sanya. Sanya, in particular, should give full play to its tourism advantages and actively promote the development of tourism economy in surrounding cities and counties. Baoting County, as an important member of the "Big Sanya" tourism economic circle, should actively integrate into the strategic development of the "Big Sanya" tourism economic circle. 展开更多
关键词 free trade port "Big Sanya" tourism economic circle integrate into
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Application Analysis of Magnesium Sulfate in Patients with Preeclampsia Caused by Elective Cesarean Section
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作者 GUANTianyun MAOJianxiong +1 位作者 TAOJing zhaoli 《外文科技期刊数据库(文摘版)医药卫生》 2022年第9期006-009,共4页
Objective: to investigate the effect of magnesium sulfate on patients with preeclampsia after elective cesarean section. Methods: 92 patients with preeclampsia during elective cesarean section who were delivered in ou... Objective: to investigate the effect of magnesium sulfate on patients with preeclampsia after elective cesarean section. Methods: 92 patients with preeclampsia during elective cesarean section who were delivered in our hospital from February 2020 to November 2021 were selected as the study objects. According to the odd and even number of the patients admission number, they were divided into two groups: the reference group and the study group, with 46 patients in each group. The reference group was treated with misoprostol, while the study group was treated with magnesium sulfate on the basis of the reference group. The blood pressure, serum TLR4 level, postoperative bleeding, postoperative pain severity score, and the incidence of postoperative adverse reactions were compared between the two groups. Results: there was no significant difference in blood pressure level and serum TLR4 level between the two groups before treatment (P > 0.05). After intervention, the systolic blood pressure, diastolic blood pressure and serum TLR4 level of patients in the study group were lower than those in the reference group, and the difference between the two groups was significant (P < 0.05). The amount of bleeding in different time periods and the total amount of bleeding after intervention in the study group were less than those in the reference group, and the score of postoperative pain severity in the study group was lower than that in the reference group, with statistical significance (P < 0.05). After comparison, the incidence of postoperative adverse reactions in the reference group was significantly higher than that in the study group (P < 0.05). Conclusion: the application of magnesium sulfate in the intervention of patients with pre eclampsia after elective cesarean section has a better effect. It can effectively improve the blood pressure level and serum TLR4 level of patients, reduce the amount of postoperative bleeding of patients, reduce the postoperative pain of patients, and promote the reduction of the incidence of adverse reactions of patients. It has a higher application value. 展开更多
关键词 elective cesarean section PREECLAMPSIA magnesium sulfate application effect
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Discussion on the Specific Application and Challenges of Big Data in Enterprise Management Decision-making
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作者 zhaoli 《外文科技期刊数据库(文摘版)经济管理》 2022年第6期070-073,共4页
Along with the rapid development of computer technology and network technology, the information age is coming in an all-round way. Internet information technology has merged with people's production and life, whic... Along with the rapid development of computer technology and network technology, the information age is coming in an all-round way. Internet information technology has merged with people's production and life, which makes all kinds of information explode in the form of data. Big data resources are increasingly having a far-reaching impact on the social and economic development and national governance of countries around the world, and become a new type of important national strategic resources. Big data has penetrated into all aspects of people's lives. Through embedded analysis, enterprises can understand customers' needs more comprehensively and individually, which makes big data an important support for enterprise management decisions. Enterprise managers combine the characteristics of big data, make statistics and analysis on rich and diverse customer data, and can gather the combination of service goods that customers need, and obtain considerable profits under the normal operation of the enterprise. This paper discusses the application of big data in enterprise management decision-making, so that enterprises can recognize the market environment and development necessity they are facing. By integrating the technology and resources of applying big data, the economic benefits can be improved and the input-output efficiency can be maximized. 展开更多
关键词 big data decision information enterprise management decision
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