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Unraveling the influence of surface roughness on oil displacement by Janus nanoparticles

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Petroleum Science 2023年第4期20卷 2512-2520页

作者： Yuan-Hao Chang Sen-Bo Xiao Rui Ma zhi-liang zhang Jian-Ying He Department of Structural Engineering Norwegian University of Science and Technology(NTNU)7491TrondheimNorway

Janus nanoparticles(JNPs)possess great potential in recovering the residual oil from reservoirs,however,the fundamental interaction mechanisms among nanoparticles,the oil,and reservoir wall characteristics remain to be *** this work,models of oil trapping grooves with different geometric features are subjected to molecular dynamics simulations for investigating the influences of roughness parameters on oil displacement dynamics by *** key surface geometry parameters and different degrees of surface hydrophobicity are *** results indicate that JNPs hold an outstanding performance in displacing residual oil on weakly to moderately hydrophobic ***,smaller entry and exit angles,the larger aspect ratio of the oil trapping grooves,and a bigger tip length of the rough ridges lead to superior oil *** the key geometric parameters,the aspect ratio of the oil trapping grooves plays the dominant *** insights about the interaction of surface properties and JNPs and the resulting trapped oil displacement could serve as a theoretical reference for the application of JNPs for targeted reservoir conditions.

关键词： Janus nanoparticles Oil displacement Enhanced oil recovery Molecular dynamics simulation Rough surface

Effects of nitrogen content on growth and hydraulic characteristics of peach(Prunus persica L.) seedlings under different soil moisture conditions

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Journal of Forestry Research 2014年第2期25卷 365-375页

作者： zhi-liang zhang Guo-dong Liu Fu-cang zhang Cai-xia Zheng Fu-quan Ni Yin-hong Kang Yun Zeng College of Water Resource and Hydropower Sichuan University College of Information and Technology Sichuan Agricultural University Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas of Ministry of Education Northwest Sci-Tech University of Agriculture and Forestry

A pot experiment was conducted to investigate the effects of nitrogen content [Nl （no fertilizer）, N2 （0.15 ***-l）, and N3 （0.3 *** 1）] on the growth and the hydraulic characteristics of peach seedlings under different soil moisture conditions （Wl, W2 and W3, in which the soil water content was 45% to 55%, 60% to 70%, and 75% to 80% of the field water capacity, respectively） by using a specialized high pressure flow meter with a root chamber and a coupling, which was connected to plant organs. Leaf area and leaf hydraulic conductivity （KL） increased significantly in the seedlings because of increased soil moisture and N content. KL increased with leaf area. A linear correlation was documented between KL and leaf area. KL was higher in the morning and began to decline sharply after 16：00, at which KL declined after an initial increase. Soil moisture and N content enhanced shoot （Ks） and root （Kr） hydraulic conductivities, thereby improving the low soil moisture condition to a large extent. Ks and Kr of the seedlings were reduced by 32% and 27% respectively in N~, and by 14.7% and 9.4%, respectively in N2, and both in Wb compared with the control treatment. N3 had no significant effect on Ks and Kr under similar conditions. Linear negative correlations were observed between Kr and the excised root diameter as well as between Ks and the shoot stem diameter. The shoot-to-root ratio increased with in- crease in N content. The shoot-to-root ratio in N3 was increased by 14.37%, compared with N1 in W1 as well as by 12% and 4.39% in Wz and W3, respectively. Knowledge of the effects of soil moisture and N fertilizer on hydraulic characteristics and growth is important. Our results provide basic guidelines for the implementation of water-saving irrigation and fertilization management of nursery stock.

关键词： nitrogen Hydraulic conductivity growth WUE Prunus persica L.

Extraction of Cadmium from Sewage Sludge Using Polyepoxysuccinic Acid

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Pedosphere 2009年第2期19卷 137-142页

作者： ZHU zhi-liang zhang Li-Hua zhang Hua QIU Yan-Ling zhang Rong-Hua ZHAO Jian-Fu State Key Laboratory of Pollution Control and Resource Reuse Tongji University Shanghai 200092 China Chemistry and Biology Engineering Department Sanming College Sanming 365004 China

Polyepoxysuccinic acid （PESA）, as an environmental benign biodegradable chelant, was used to remove heavy metals from the sewage sludge of Shanghai Taopu Wastewater Treatment Plant. The extraction of cadmium （Cd） from sewage sludge using aqueous solution of PESA was studied. It was found that PESA was capable of extracting Cd from the sludge, and the extraction efficiency was dependent on both pH and the concentration of the chelating reagent. The extraction efficiency decreased gradually with increasing of pH, whereas the dependency on pH decreased as the concentration of PESA increased. In the case of the high PESA to total metal ratio, e.g., 10：1, the extraction efficiency reached above 70% within the pH range from 1 to 7. The highest extraction efficiency obtained in tbe experiment was 78%. By comparing the contents of the heavy metals in sewage sludge before and after the extraction, it was found that the extracted Cd came mainly from the four fractions： acid-soluble, reducible, oxidizable, and water-soluble fractions.

关键词： cadmium extraction PESA sewage sludge

Preventive effects of chitosan on peritoneal adhesion in rats

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World Journal of Gastroenterology 2006年第28期12卷 4572-4577页

作者： zhi-liang zhang Si-Wei Xu Xie-Lai Zhou School of Clinical Medicine Hangzhou Teachers College Hangzhou 310036 Zhejiang Province China Department of Cardiovascular Surgery The 2nd Affiliated Hospital of Medical College of Zhejiang University Hangzhou 310009 Zhejiang Province China

AIM： To study the effects of chitosan gel and blending chiston/gelatin film on preventing peritoneal adhesion in rats. METHODS： SD rats were randomly divided into 2 groups, group A treated with chitosan gel and group B with blending chiston/gelatin film. In group A, rats were randomly subdivided into 3 subgroups as groups A1, A2 and A3, and different methods were used to induce peritoneal adhesions at the dead end of vermiform process in each group as follows： Group A1 with trauma, A2 with talc powder and A3 with ligation of blood vessel. In each subgroup, rats were redivided into control group and experimental group whose treated vermiform processes were respectively coated with chitosan gel and normal saline immediately after the adhesioninduced treatments. In group B, all the rats received traumatic adhesion-induced treatments and then were randomly divided into 4 groups （groups B1, B2, B3, B4）. Group B1 served as control group and were coated with normal saline in the vermiform processes immediately after the treatments, and groups B2, B3 and B4 with 100% chitosan film, chitosan film containing 10% gelatin and chiston film containing 50% gelatin, respectively. At 2 and 4 wk after the above treatments, half of the rats in each terminal group were belly opened, and the peritoneal adhesive situation was graded and histopathological changes were examined. RESULTS：（1） In group A, regarding peritoneal adhesion situation： At both 2 and 4 wk after the treatments, for groups A1 and A3, the adhesive grades of experimental groups were significantly lower than those of the control group （2 wk： H = 4.305, P 〈 0.05 for A1, H = 6.743, P 〈 0.01 for A3; 4 wk： H = 4.459, P 〈 0.05 for A1, H =4.493, P 〈 0.05 for A3）. However, of group A2, there was no significant difference between the experimental and control groups （2 wk： H = 0.147, P 〉 0.05; 4 wk： H = 1.240, P 〉 0.05）. Regarding pathological changes： In groups A1 and A3, the main pathological change was fibroplasia. In group A2

关键词： Chitosan Gelatin Peritoneal adhesion Rat

Initial effects of inflammation-related cytokines and signaling pathways on the pathogenesis of post-traumatic osteoarthritis

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Frontiers of Nursing 2018年第2期5卷 91-96页

作者： Peng-Fei Han zhi-liang zhang Tao-Yu Chen Rui-Peng Zhao Rong zhang Xiao-Dong Li Peng-Cui Li Lei Wei zhi Lv Xiao-Chun Wei Second People's Hospital of Changzhi City ChangzhiShanxi 046010China Second Affiliated Hospital of Shanxi Medical University TaiyuanShanxi 030001China Affiliated Peace Hospital of Changzhi Medical College ChangzhiShanxi 046010China

The main pathological change in post-traumatic osteoarthritis （PTOA） is cartilage degeneration, which is closely related to inflammation and oxidative stress. Inflammation can cause degeneration of articular cartilage. Cartilage degeneration can also stimulate the progression of inflammation. It has been found that inflammatory cytokines can participate in the pathological process of cartilage degeneration through multiple signaling pathways, mainly mitogen-activated protein kinase, nuclear transcription factor kappa B, and Wnt-p-catenin signal transduction pathways. This review aimed at exploring the relationship between PTOA and inflammation-related cytokines by introducing the role of proinflammatory cytokines in chondrocyte destruction and extracellular matrix degradation.

关键词： post-traumatic osteoarthritis cartilage degeneration pminflammatory cytokine signaling pathway

Optimal Energy Management for a Complex Hybrid Electric Vehicle:Tolerating Power-loss of Motor

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Journal of Shanghai Jiaotong university(Science) 2009年第4期14卷 476-481页

作者：张培智殷承良张勇吴志伟 School of Mechanical Engineering Shanghai Jiaotong University

The energy management may perform well under normal conditions, but may lead to poor behavior under abnormal situations. To tackle this problem, an optimal control strategy called rule-based equivalent fuel consumption minimization strategy （RECMS） is developed for a new complex hybrid electric vehicle （CHEV）. It optimizes the energy efficiency and drive performance to cater for normal and power-loss operations of the tractive motor. Firstly, the strategy formulates a novel objective function based on the equivalent fuel concept. By accounting for the actual fuel cost, the equivalent fuel cost for the electric machines and virtual fuel cost for the drivability, the cost function is obtained. Furthermore, some penalty factors are presented to optimize the performance target. Finally, experiments for a practical CHEV are performed to validate a simulation model. Then simulations are carried out for both rule-based and RECMS. The results show that the optimal energy management is working well.

关键词： optimal energy management hybrid electric vehicle control strategy equivalent fuel consumption Dower-loss

Recurrent spinal subdural hematoma following percutaneous kyphoplasty:A unique case report

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Chinese Journal of Traumatology 2024年第6期27卷 354-358页

作者： Wen-Hui Liu Xin-Min Lin Xin-Yu Lu Hai Han liang-zhi zhang Hai-Xian Lin Zi-Wen Liu Department of Orthopedics People's Hospital of Fujian ProvinceFuzhou350000China

Spinal intradural(subdural and subarachnoid)hematoma following percutaneous kyphoplasty is an extremely rare *** this report,we described a case of 2 episodes of subarachnoid hemorrhage with delayed paralysis after kyphoplasty.A 73-year-old man underwent percutaneous kyphoplasty in our hospital an osteoporotic vertebral fracture at the T12 *** the 55 h after kyphoplasty for T12 osteoporotic vertebral fracture,he developed paralysis of the lower *** emergency posterior decompression from T8 to L2 was *** the subarachnoid hematomas were ***,the neurological symptoms improved ***,2 weeks after the operation,the patient experienced a setback with severe neurological decline(paraplegia with sensory and autonomic dysfunction).An emergency posterior decompression from T5 to L2 was *** subarachnoid hematomas were *** case reflects the cause and progression of spinal subdural *** literature has debated the best treatment approach for spinal subarachnoid hemorrhage,but the prognosis of patients is heavily dependent on precise symptom evaluation and localization.

关键词： Spinal subarachnoid hemorrhage Rare complication Osteoporotic vertebral fracture(OVF) Venous overload Percutaneous kyphoplasty Case report

Percutaneous vertebroplasty versus percutaneous kyphoplasty for the treatment of delayed post-traumatic vertebral body collapse(Kümmell’s disease) in Chinese patients: a systematic review and meta-analysis

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Frontiers of Nursing 2019年第4期6卷 273-283页

作者： Peng-Fei Han Cheng-Long Chen Tao-Yu Chen zhi-liang zhang Xiao-Dong Li Peng-Cui Li Xiao-Chun Wei Department of Orthopaedic Surgery The Second People’s Hospital of ChangzhiChangzhiShanxi 046000China China Department of Orthopaedic Surgery The Second Hospital of Shanxi Medical UniversityTaiyuanShanxi 030009China

Objective: To compare the clinical efficacy between percutaneous vertebroplasty(PVP) and percutaneous kyphoplasty(PKP) in the treatment of Kümmell's disease in Chinese ***: The studies using randomized controlled trials to compare clinical efficacy between PVP and PKP in the treatment of Kümmell's disease in Chinese patients were retrieved from Embase, Pubmed, Central, Cinahl, PQDT, CNKI, CQVIP, Wanfang Data, and CBM(from September 2008 to September 2018). Keywords for both Chinese and English search were: percutaneous vertebroplasty, PVP, percutaneous kyphoplasty, PKP, and Kümmell's disease. A total of 132 articles were retrieved based on the search strategy through online database searching and manual searching. Finally, one foreign report and seven Chinese reports were included. After extracting the data, statistical software Review Manager 5.3 was used for data ***: Through comparison, Cobb angle(95% CI [0.54, 4.42), P = 0.01] and Oswestry Dysfunction Index(ODI)(95% CI [0.21, 2.15], P= 0.02) of PKP group was smaller than that of PVP group. Postoperative anterior vertebral body height of the PKP group was better than PVP group(95% CI [-1.27,-0.66], P < 0.001]. However, the PVP group had shorter operation time than PKP group(95% CI [-13.48,-7.43), P = 0.001]. In the other outcome measures, including Visual Analogue Scale(VAS) score(95% CI [-0.04, 0.27), P = 0.15), cement volume(95% CI [-0.82, 0.32], P = 0.39) and cement leakage(95% CI [0.90, 2.76], P = 0.11), there was no significant differences between the two ***: At this stage, there is sufficient evidence to support that PKP is better than PVP in the treatment of Kümmell's disease in Chinese patients. Although PVP surgery requires much less operation time, PKP has better postoperative radiological results and lower ODI. Moreover, both of them had similar clinical results(e.g., analgesic effects, cement dosage, and leakage rate). Further evidence is dependent on the

关键词： Kümmell’s disease percutaneous vertebroplasty percutaneous kyphoplasty post-trauma vertebral body collapse meta-analysis systematic review

Research on agent security and its application

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通讯和计算机（中英文版） 2007年第3期4卷 38-43,51页

作者： XIE Ying-gang WANG zhi-liang zhang Qing DANG Hui-jian School of Information Engineering University of Science and Technology Beijing 100083 China