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A novel polymer gel with high-temperature and high-salinity resistance for conformance control in carbonate reservoirs

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Petroleum Science 2022年第6期19卷 3159-3170页

作者： Wei-Peng wu Ji-Rui Hou ming Qu Yu-Long Yang Wei Zhang Wen-ming wu Yu-Chen Wen Tuo Liang Li-Xiao Xiao Unconventional Petroleum Research Institute China University of PetroleumBeijing102249China Sinopec Northwest Oilfield Company UrumqiXinjiang830000China

Plugging agents have been widely used to enhance oil recovery in fractured-vuggy carbonate ***,the harsh conditions of fractured-vuggy carbonate reservoirs yield a significant challenge in maintaining a long-term stabilization of plugging *** this work,we developed an anti-hightemperature and high-salinity polymer gel(APG)with excellent resistance to high temperature(140℃)and ultra-high salinity(240000 mg/L).The rheology and microstructure of APG were characterized before and after *** plugging tests on fractured cubic cores were conducted to quantify the plugging performance of the gel *** results showed that the Sclerglucan and Cobalt(Ⅱ)Chloride Hexahydrate filled the three-dimensional(3-D)network with various morphologies,providing extra protection to the cross-linking points of the 3D network structure of APG and thus,leading to a prolongation of the dehydration *** dehydration rate of APG was only 5%within 30days,and the strength of APG could be maintained at a rigid or near-rigid level over 150 ***,APG exhibited satisfactory shear and scour *** plugging tests showed that APG could achieve a plugging rate of 90%and demonstrate ignorable minor damage to the *** results indicate that APG can serve as a great candidate in channel plugging in fractured-vuggy carbonate reservoirs where fractures are fully developed.

关键词： Conformance control Fractured-vuggy reservoir High temperature High salinity Thermal stability

Comparison of 25-gauge sutureless vitrectomy and 20-gauge vitrectomy in the treatment of posterior capsule opacification in pseudophakic children

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International Journal of Ophthalmology(English edition) 2015年第6期8卷 1179-1183页

作者： Xiao-ming wu Li-Xin Xie Qingdao University Medical College Shandong Eye Institute

AIMTo compare the effectiveness and safety of pars plana capsulotomy and vitrectomy using 25-gauge tansconjunctival sutureless vitrectomy system and 20-gauge vitrectomy system for posterior capsule opacification (PCO) in pseudophakic *** study. Pars plana capsulotomy and vitrectomy using 25-gauge sutureless vitrectomy system was performed for PCO in the study group (32 eyes). Patients in the control group (34 eyes) underwent capsulotomy and vitrectomy using standard 20-gauge vitrectomy system, providing a comparison between 2 groups with regard to preoperative and postoperative best corrected visual acuity (BCVA), intraocular pressure (IOP), and intraoperative and postoperative complications. The two groups were performed consequentially. The patients ages ranged from 2 to 13y (means: 6.61±2.73y). Surgical technique, intraoperative and postoperative complications, visual acuity, IOP, and recurrent PCO were *** surgical procedure was performed uneventfully in all patients. Visual acuity improved significantly in both groups. BCVA improved in 22 eyes (81.5%) in the study group and in 28 eyes (87.5%) in the control group. There was no statistical difference of visual acuity that were attainable in two groups (H=0.115, P=0.909). Mean postoperative IOP showed no significant difference between the groups at 1wk. All sort of PCO were accomplished by 20-gauge system, while 25-gauge system was effective for pearls style and 2 grade of fibrous PCO, and was insufficient to grade 3 of PCO. In the study group two cases were not accomplished by 25-gauge system while 20-gauge system conquered them. Compared with the control group, mean operative time for opening and closing the sclerotomy in the study group was considerably reduced. The mean follow-up was 38.2mo (range: 8-79mo). During the follow-up period, no incision leakage, corneal edema, vitreous loss, IOL damage, retinal detachment, recurrent PCO, or other complications wer

关键词： posterior capsular opacity vitrectomy cataract children

Expanding the selection criteria of laparoscopic hepatectomy for hepatocellular carcinoma

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Chinese Journal of Cancer Research 2014年第4期26卷 360-361页

作者： Po-Da Chen Chao-Yin wu Yao-ming wu Department of Surgery National Taiwan University Hospital

The introduction of laparoscopic procedures is one of the milestones of surgical innovation over the past few decades. The advantages of minimally invasive approach have been gradually accepted owing to its less postoperative pain, reduced morbidity and faster recovery. Also, since the introduction of laparoscopic approach of liver surgery in 1955 （1）, the benefit of the procedure had long been questioned but expected.

关键词： Expanding the selection criteria of laparoscopic hepatectomy for hepatocellular carcinoma

Risk Assessment and Ecological Effects of Transgenic Bacillus thuringiensis Crops on Non-Target Organisms

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Journal of Integrative Plant Biology 2011年第7期53卷 520-538页

作者： Hui-Lin Yu Yun-He Li Kong-ming wu State Key Laboratory for Biology of Plant Diseases and Insect Pests Institute of Plant Protection Chinese Academy of AgriculturalSciences Beijing 100193 China

The application of recombinant DNA technology has resulted in many insect-resistant varieties by genetic engineering （GE）. Crops expressing Cry toxins derived from Bacillus thuringiensis （Bt） have been planted worldwide, and are an effective tool for pest control. However, one ecological concern regarding the potential effects of insect-resistant GE plants on non-target organisms （NTOs） has been continually debated. In the present study, we briefly summarize the data regarding the development and commercial use of transgenic Bt varieties, elaborate on the procedure and methods for assessing the non-target effects of insect-resistant GE plants, and synthetically analyze the related research results, mostly those published between 2005 and 2010. A mass of laboratory and field studies have shown that the currently available Bt crops have no direct detrimental effects on NTOs due to their narrow spectrum of activity, and Bt crops are increasing the abundance of some beneficial insects and improving the natural control of specific pests. The use of Bt crops, such as Bt maize and Bt cotton, results in significant reductions of insecticide application and clear benefits on the environment and farmer health. Consequently, Bt crops can be a useful component of integrated pest management systems to protect the crop from targeted pests.

关键词： Bt crops non-target organisms risk assessment IPM.

Grids of rotating stellar models with masses between 1.0 and 3.0 M_⊙

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Research in Astronomy and Astrophysics 2013年第5期13卷 579-592页

作者： wu-ming Yang Shao-Lan Bi Xiang-Cun Meng Department of Astronomy Beijing Normal University School of Physics and Chemistry Henan Polytechnic University

We calculated a grid of evolutionary tracks of rotating models with masses between 1.0 and 3.0 M⊙ and resolution δM 〈 0.02 M⊙, which can be used to study the effects of rotation on stellar evolution and on the characteristics of star clusters. The value of ～ 2.05 Me is a critical mass for the effects of rotation on stellar struc- ture and evolution. For stars with M 〉 2.05 Me, rotation leads to an increase in the convective core and prolongs their lifetime on the main sequence （MS）; rotating mod- els evolve more slowly than non-rotating ones; the effects of rotation on the evolution of these stars are similar to those of convective core overshooting. However for stars with 1.1 〈 M/M⊙ 〈 2.05, rotation results in a decrease in the convective core and shortens the duration of the MS stage; rotating models evolve faster than non-rotating ones. When the mass has values in the range ～ 1.7 - 2.0 M⊙, the mixing caused by rotationally induced instabilities is not efficient; the hydrostatic effects dominate pro- cesses associated with the evolution of these stars. For models with masses between about 1.6 and 2.0 M⊙, rotating models always exhibit lower effective temperatures than non-rotating ones at the same age during the MS stage. For a given age, the lower the mass, the smaller the change in the effective temperature. Thus rotations could lead to a color spread near the MS turnoff in the color-magnitude diagram for intermediate-age star clusters.

关键词： stars: evolution -- stars: rotation m stars: interiors

Nest site selection of white-naped crane(Grus vipio) at Zhalong National Nature Reserve, Heilongjiang, China

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Journal of Forestry Research 2014年第4期25卷 947-952页

作者： Qing-ming wu Hong-fei ZOU Jian-zhang MA College of Wildlife Resource Northeast Forestry University

White-naped crane （Grus vipio） is a globally threatened spe- cies. It is very important to analyze its nest site selection in circum- stances where there are multiple disturbances, and also helpful to accu- mulate valuable information about this threatened species and supply scientific suggestions for conservation and management. We studied nest site selection and the effects of environmental variables on nesting habits of white-naped crane at Zhalong National Nature Reserve, Qiqihar City, Heilongiiang, China, during March-May of 2002-2008. White-naped crane responded and adapted to changes in the quality of the spatial environments of landscape and microhabitat under multiple environ- mental disturbances. Nest site selection included two scales and two choices, namely the choice of nest site habitat type within the macro-habitat scale and nest site micro-habitat selection within the mi- cro-habitat scale. Nest sites were recorded only in reed marshes. The choice of nest site micro-habitat included three basic elements and six factors, namely incubation element （nest parameters factor, incubation temperature factor and incubation humidity factor）, safety element （pro- tection factor and concealment factor）, and food element （water factor）. Water, remnant reed clusters, and fire were major resource management challenges during the breeding period for the white-naped crane in this Reserve.

关键词： factor analysis environmental variable Grus vipio nestsite selection pattern Zhalong Nature Reserve

Affective computing study of attention recognition for the 3D guide system

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CAAI Transactions on Intelligence Technology 2020年第4期5卷 260-267页

作者： Li-Hong Juang ming-Ni wu Cian-Huei Lin School of Electrical Engineering and Automation Xiamen University of TechnologyNo.600Ligong RoadJimeiXiamen 361024People’s Republic of China

The eye-tracking has been widely used in multiple discipline studies in recent ***,most of the studies focused on the analysis for static images or text but less for highly interactive operation *** addition,the affective computing rose and development in recent years have changed completely the design of thinking pattern for the human-computer ***,this study hopes to integrate the affective computing into the 3D guide system which was developed for the real campus through the eye-tracking *** analysing user’s gaze position and recognising attention emotion are according to the interest region which is stetted into the environment,and shows the feedback content corresponds to the area and the *** the most intuitive gaze analysis,the operation burden can be reduced and the user’s interactive experience can be improved to achieve intuitive and user-friendly *** results can also apply for medical therapy on human attention training.

关键词： computing interactive computer

Prospective,randomized,and active controlled study of the efficacy of alginic acid and antacid in the treatment of patients with endoscopy-negative reflux disease

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World Journal of Gastroenterology 2006年第5期12卷 747-754页

作者： I-Rue Lai ming-Shiang wu Jaw-Town Lin Department of Surgery National Taiwan University HospitalNational Taiwan University College of MedicineTaipeiTaiwan China Division of Gastroenterology Department of Internal MedicineNational Taiwan University HospitalNational Taiwan University College of MedicineTaipeiTaiwanChina

AIM： To assess the efficacy and safety of a compound containing alginic acid plus antacid （Topaal） compared to equal-strength antacid （Nacid） in patients with endoscopy-negative reflux disease （ENRD）. METHODS： A total of 121 patients with ENRD were randomized to receive Topaal （65 patients） or Nacid （56 patients） for 6 weeks, with a consultation every 3 weeks. The primary end-point assessment was the change in the severity of heartburn as evaluated using a visual analog scale （VAS） at 6 weeks. The secondary end-point assessments were the VAS at 3 weeks, the change of frequency of the reflux symptom, the change of quality of life and the adverse effects. RESULTS： Demographics of randomized subjects in each treatment group were comparable except that the Topaal group included more males. The baseline characteristics between the groups were similar. After 6 weeks of treatment, the reduction of VAS of heartburn was more prominent in the Topaal group （-6.29 cm vs -4.11 cm）. At the 3m week, Topaal group showed greater reduction of VAS for heartburn （P= 0.0016）, regurgitation （P=0.0006）, vomiting （P=0.0373）, and belching （P〈0.0001）. The patients of the Topaal group had lower frequency of heartburn （P=0.0015） and pain （P= 0.0163） at the end of the 6-week treatment period. From the doctor＇s point of view, the Topaal group also showed significant reduction in the severity of heartburn （P= 0.0020）, regurgitation （P=0.0081）, vomiting （P= 0.0182）, and belching （P= 0.0018） at the end of the treatment. The improvement of the quality of life was more remarkable in the Topaal group at the end of the 6-week treatment period （P〈 0.0001）. For the adverse effect, there was no difference in both the groups. CONCLUSION： Topaal is more effective than Nacid for the treatment of symptoms presented by patients with ENRD.

关键词： Alginic acid Endoscopy-negative reflux disease

A Facile Synthesis of 2, 7-Diaminothieno[2, 3-d:5,4-d]-dipyrimidine-4, 5(3H, 6H)diones

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Chinese Chemical Letters 2005年第9期16卷 1177-1180页

作者： Sheng Zhen XU Min Hui CAO ming wu DING Hong wu HE Key Laboratory of Pesticide ＆ Chemical Biology Ministry of Education College of Chemistry Central China Normal University Wuhan 430079

2, 7-Diaminothieno[2, 3-d：5, 4-d]dipyrimidine-4, 5（3H, 6H）diones 4 were synthesized by a facile synthetic method, which includes bis-aza-Wittig reaction of bis-iminophosphorane 1 with aromatic isocyanate to give bi... 详细信息

关键词： Thieno[2,3-d:5,4-d]dipyrimidine-4,5(3H,6H)dione bis-aza-Wittig reaction bisimino-phosphorane bis-carbodiimide synthesis.