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The multi electrode dielectric barrier discharge (MDBD) low temperature plasma was used for pilot study on printing and dyeing wastewater. The degradation of methyl orange solution in a reactor was investigated under input voltage, pulse frequency, initial concentration of solution and gas flow rate by response surface methodology (RSM) .The results show that the order of significance of each factor is: initial concentration>reaction time>discharge voltage>ventilation rate. The mathematical model has good regression; the discharge voltage is 91.37 V, the initial concentration is 50 mg/L, and the discharge time is 20 min. When the rate is 14.20 L/min, the model predicts that the maximum degradation rate of methyl orange is 89.5%,which is only 0.51% error from the actual value. [ABSTRACT FROM AUTHOR]

This paper summarizes the current s让uation of recycling and utilization of circulating fluidized bed fly ash(CFB ash) in recent years, briefly introduces the influence of the physical and chemical properties of CFB ash on the occurrence of heavy metals, and focuses on the influence of the special properties of CFB ash on the migration of heavy metals and the factors limiting the comprehensive utilization of CFB ash. The potential problems in CFB ash storage yard are analyzed in order to provide reference for the follow-up pollution prevention research. [ABSTRACT FROM AUTHOR]

目的探讨大黄联合西药治疗急性有机磷农药中毒的临床效果。方法选取2014 年5 月至2017 年5 月 该院收治的急性有机磷农药中毒患者80 例，采用随机区组法分为对照组和观察组，每组40 例。对照组使用西药戊乙奎 醚（长托宁）静脉注射治疗，观察组在长托宁静脉注射治疗基础上加用大黄辅助治疗。比较两组患者的临床疗效和治疗 指标，如意识恢复时间、胆碱酯酶恢复正常60% 时间，以及中间综合征、多器官功能障碍综合征（MODS）发生率及病 死率等。结果观察组患者有效率明显高于对照组，意识恢复时间、胆碱酯酶恢复60% 时间均明显短于对照组，中间 综合征、MODS 发生率及病死率均明显低于对照组，差异均有统计学意义（P<0.05）。结论大黄联合西药治疗急性有机 磷农药中毒疗效显著，值得临床推广应用。 [ABSTRACT FROM AUTHOR]

BACKGROUND: Peripheral nerves play an important role in bone metabolism. In clinical practice, the specific impact of nerve injury on bone transport technology needs further study. OBJECTIVE: To investigate the effect of tibial nerve injury on the treatment of tibial slip by single-plane osteotomy. METHODS: Thirty-two patients with tibial bone defects admitted to Tangshan Second Hospital from May 2011 to June 2022 were selected. According to the presence or absence of tibial nerve injury, patients were divided into the tibial nerve injury group (n=16) and the non-tibial nerve injury group (n=16). Both groups were treated with single-plane osteotomy and bone slip. After treatment, the patients were followed up to collect the mineralization zone healing index, external fixation index, docking point healing and needle infection. After the removal of external fixation, the bone healing and functional evaluation were evaluated by a classification of the Association for the Study and Application of the Method of Ilizarov (ASAMI). RESULTS AND CONCLUSION: (1) All 32 patients were followed up for (25.28±4.79) months. There were no significant differences in bone healing time, external fixation time, healing index and external fixation index between the two groups (P > 0.05). Needle infection occurred in two cases of the tibial nerve injury group and one case of the non-tibial nerve injury group, all of which were PALEY I, and there was no significant difference between the two groups (P > 0.05). The non-union rate of the occlusal end of the tibial nerve injury group was 31%, and that of the non-tibial nerve injury group was 13%; there was no statistical difference between the two groups (P > 0.05). The excellent and good rate of ASAMI bone healing score in the two groups was 100%; the excellent and good rate of limb score was 81% in the tibial nerve injury group and 94% in the non-tibial nerve injury group; there was no statistical difference between the two groups (P > 0.05). (2) Our research shows that tibial nerve injury has no significant effect on the mineralization speed, external fixation time, union of the occlusal end, infection of the needle tract, and the quality of bone formation in the mineralized area of the single-plane osteotomy. [ABSTRACT FROM AUTHOR]

Catalytic reforming process is an important step in refining and chemical industry, which generates a large number of by-product hydrogen gas besides high-octane gasoline and aromatics. Continuous catalytic reforming process is always related with large energy consumption because of its processing and reaction characteristics. During a case study in a refinery of Sinopec, it was found that the energy consumption of the catalytic reforming process was mainly from fuel gas, which accounted for 69.61% of the total energy consumption and ranked as the largest proportion. Subsequently, steam and electricity consumption accounted for 20.76% and 7.34% of the total energy consumption, respectively. Then based on the analysis of the energy consumption status, as well as the existing technology and problems, the energy-saving reforming programs for the feed pretreatment unit and product fractionation unit were proposed respectively. As for the feed pretreatment unit, one more stage of heat transfer was added between the pre-hydrogenation reaction product and the pre-hydrogenated hydrogenated oil. With regard to the product fractionating unit,the reforming gasoline from the stabilizing tower was first adjusted to exchange heat with the oil and gas of product fractionating tower overhead and then with the bottom materials. Therefore, the amount of fuel gas and the air cooling power consumption were reduced. The results showed the total energy consumption decreased 1.76 kgEO/t (1 kgEO/t=41.86 kJ/kg)after the application of the above reforming measures. [ABSTRACT FROM AUTHOR]

BACKGROUND: Ilizarov technology has become one of the indispensable technological tools for orthopedic, maxillofacial surgery and prosthetic and reconstructive surgeons worldwide, but the mechanism of bone healing and angiogenesis in the process of distraction osteogenesis is not very clear. OBJECTIVE: To review the microstructure and molecular mechanisms of bone healing and angiogenesis during distraction osteogenesis. METHODS: The articles on the mechanisms of bone healing and angiogenesis in the distraction osteogenesis process in recent years were reviewed on PubMed and CNKI. Duplicate articles and duplicate studies were excluded, while the included articles were reviewed and analyzed. RESULTS AND CONCLUSION: (1) There is a 3rd ossification mechanism in distraction osteogenesis distinct from simple fracture healing, “transchondral osteogenesis”. (2) During the healing process of distraction osteogenesis, bone stumps form microcolumn forming zones on both sides and eventually lead to interfibrillar zones, and complete mineralization and remodeling of the newly formed bone during the consolidation phase. (3) Factors such as interleukins, bone morphogenetic proteins and the RANKL/OPG system have different spatiotemporal distributions during distraction osteogenesis, but all play a role in promoting bone formation or remodeling. (4) The process of distraction osteogenesis is accompanied by substantial neoangiogenesis and is highly consistent with the osteogenic cycle, whereas neovascularization and mineralization are the beginnings of bone regeneration. (5) Endothelial progenitor cells and cytokines such as vascular endothelial growth factor play a role in neoangiogenesis by promoting revascularization and mineralization in the distraction area, and their expression is regulated by the inflammatory response and stretch after osteotomy, whereas the induced homing of endothelial progenitor cells to the site of bone regeneration is an important factor in the angiogenesis of distraction osteogenesis. (6) Bone healing is mutually promoted and coupled with angiogenesis. The two ends of the osteotomy form a collagen fiber bundle under traction force, which eventually advances to the interfibrillar zone, where osteoblasts line up, gradually ossify, and undergo consolidation and remodeling to form mature, lamellar bone with bone marrow. Angiogenesis precedes the healing of bone and can occur after osteotomy, with blood vessels on the periosteal and endosteal surfaces at both ends of the osteotomy gradually proliferating and leading to interfibrillar zones, followed by complete communication of periosteal and medullary vascular networks at the distraction site. (7) The current study cannot fully explain the macro - and micro processes of distraction osteogenesis and the roles of various influencing factors and cytokines in distraction osteogenesis, and the healing mechanism of distraction osteogenesis needs further study. [ABSTRACT FROM AUTHOR]