Preprocessing and Efficacy Analysis of Comprehensive Anti-Inflammatory Treatment for Lymphedema in Patients with Irritating Contact Dermatitis

Objective: To explore the pre-treatment and efficacy analysis of comprehensive anti-inflammatory treatment for lymphedema in patients with irritating contact dermatitis. Method: Convenience sampling method was used to observe the skin of 160 patients with upper limb lymphedema admitted to the lymphedema outpatient department of our hospital. They were divided into an observation group (80 cases) and a control group (80 cases), and both groups received a course of comprehensive anti-inflammatory treatment (20 treatments). The control group received routine skin care;On the basis of the control group, the observation group received pre-treatment of the affected limb skin: Laofuzi herbal ointment was applied externally to the prone areas of irritating contact dermatitis (such as the upper arm, inner forearm, and cubital fossa). Result: The incidence of irritating contact dermatitis in the observation group was significantly lower than that in the control group (P 0.05). Patients in the observation group felt significantly better in terms of comfort, skin moisture, and itching relief after being wrapped with low elasticity bandages than those in the control group (P Conclusion: Preventive treatment can effectively reduce the incidence of irritating contact dermatitis, prolong the time of stress treatment, thereby increasing efficacy and improving patient compliance.

Improving the interfacial contact between CH_3NH_3PbI_(3–x)Cl_x and Au by LiTFSI solution treatment for efficient photoelectric devices

Organic lead halide compounds with perovskite structure become a promising photovoltaic material for low- cost thin film solar cells in recent years. The property of perovskite/metal interface is a fundamental topic for the effective charge transfer at metal electrodes. In this work, we develop an interface modification method of lithium bis（trifluoromethane sulfonimide） （LiTFSI） solution treatment, which can effectively decrease the charge transfer resistance at the CH3NHaPbI3_xClx/Au interface. After the solution treatment, uniform nan- odots are formed at the surface of CHaNH3PbI3_xCIx films, and the barrier height at CH3NH3PbI3_xCIx/Au interface reduces from 0.51 V to 0.08 V. As a consequence, the efficiency of hole conductor free solar cells with CH3NHaPbI3-xCIx harvester increase from 4.0% to 7.6% under one sun condition. It is also found that the hole conductor free perovskite solar cell can work in a photodetector mode, which has the same output prop- erties with phototransistors. After the LiTFSI solution treatment, the sensitivity of this photodetector can be improved for about one time.

Plasma surface treatment of Cu by nanosecond-pulse diffuse discharges in atmospheric air

Nanosecond-pulse diffuse discharges could provide high-density plasma and high-energy electrons at atmospheric pressure. In this paper, the surface treatment of Cu by nanosecond-pulse diffuse discharges is conducted in atmospheric air. Factors influencing the water contact angle （WCA）, chemical composition and microhardness, such as the gap spacing and treatment time, are investigated. The results show that after the plasma surface treatment, the WCA considerably decreases from 87~ to 42.3~, and the surface energy increases from 20.46 mJ m-2 to 66.28 mJ m-2. Results of energy dispersive x-ray analysis show that the concentration of carbon decreases, but the concentrations of oxygen and nitrogen increase significantly. Moreover, the microhardness increases by approximately 30% after the plasma treatment. The aforementioned changes on the Cu surface indicate the plasma surface treatment enhances the hydrophilicity and microhardness, and it cleans the carbon and achieves oxidization on the Cu surface. Furthermore, by increasing the gap spacing and treatment time, better treatment effects can be obtained. The micmhardness in the case of a 2.5 cm gap is higher than that in the case of a 3 cm gap. More oxygen and nitrogen species appear on the Cu surface for the 2.5 cm gap treatment than for the 3 cm gap treatment. The WCA significantly decreases with the treatment thne when it is no longer than 90 s, and then it reaches saturation. In addition, more oxygen-containing and nitrogen-containing groups appear after extended plasma treatment time. They contribute to the improvement of the hydrophilicity and oxidation on the Cu surface.

Non-Thermal Atmospheric Plasma:Can it Be Taken as a Common Solution for the Surface Treatment of Dental Materials?

This study aimed to evaluate the surface roughness and wetting properties of various dental prosthetic materials after different durations of non-thermal atmospheric plasma（NTAP）treatment.One hundred and sixty discs of titanium（Ti）（n：40）,cobalt chromium（Co-Cr）（n：40）,yttrium stabilized tetragonal zirconia polycrystals（Y-TZP）（n：40）and polymethylmethacrylate（PMMA）（n：40）materials were machined and smoothed with silicon carbide papers.The surface roughness was evaluated in a control group and in groups with different plasma exposure times [1-3-5 s].The average surface roughness（Ra）and contact angle（CA）measurements were recorded via an atomic force microscope（AFM）and tensiometer,respectively.Surface changes were examined with a scanning electron microscope（SEM）.Data were analyzed with two-way analysis of variance（ANOVA）and the Tukey HSD test α=0.05）.According to the results,the NTAP surface treatment significantly affected the roughness and wettability properties（P 〈 0.05）.SEM images reveal that more grooves were present in the NTAP groups.With an increase in the NTAP application time,an apparent increment was observed for Ra,except in the PMMA group,and a remarkable reduction in CA was observed in all groups.It is concluded that the NTAP technology could enhance the roughening and wetting performance of various dental materials.

Mimicking a Superhydrophobic Insect Wing by Argon and Oxygen Ion Beam Treatment on Polytetrafluoroethylene Film

Biological tiny structures have been observed on many kinds of surfaces such as lotus leaves and insect wings,which enhance the hydrophobicity of the natural surfaces and play a role of self-cleaning.We presented the fabrication technology of a superhydrophobic surface using high energy ion beam.Artificial insect wings that mimic the morphology and the superhydrophobocity of cicada's wings were successfully fabricated using argon and oxygen ion beam treatment on a polytetrafluoroethylene (PTFE)film.The wing structures were supported by carbon/epoxy fibers as artificial flexible veins that were bonded through an autoclave process.The morphology of the fabricated surface bears a strong resemblance to the wing surface of a cicada,with contact angles greater than 160°,which could be sustained for more than two months.

Tin-based metal bath heat treatment: an efficient and recyclable green approach for Pinus massoniana wood modification

Pinus massoniana L. was thermally treated with low melting point alloy as heating medium to investigate the strength properties changes. Contact angle, color and scanning electron microscopy were recorded to assess the effectiveness of the treatment. Samples were pre-treated in a micro-wave for 5 min followed by metal bath heat treatment at 150, 180, and 210 °C for 2, 4, and 8 h,respectively. Strength properties of metal bath treated wood were decreased with increase temperature and time.Density, modulus of rupture, impact bending, modulus of elasticity were reduced for all treatments. Maximum compressive strength slightly increased at 150 °C for 4 h followed by gradual reduction. The Janka hardness was reduced in the tangential and radial directions. Treatment of the wood at 210 °C for 8 h caused the wood to become brittle and rupture. The contact angle was considerably higher after thermal treatment. The color of the wood became darker with increasing temperature of thermal treatment. Micrographs of the heat-treated samples showed damage to the cell wall with increase in temperature. Metal bath heat treatment of wood was carried out successfully and some strength properties were reduced.

Fabrication of Ti ohmic contact to n-type 6H-SiC without high-temperature annealing

The effect of surface morphology of 6H-SiC substrate on the ohmic contact properties of Ti/6H-SiC structure is studied. The H-terminated surface on Si-face 6H-SiC is obtained by both dipping SiC into HF acid solution for 15 s and thermal heating SiC in hydrogen atmosphere at 1100 ℃ for 10 min, while the H-terminated surface on C-face 6H-SiC could be obtained only by the latter method. Ti is deposited on Si-face and C-face SiC substrates with H-terminated surfaces and ohmic contact is obtained without high-temperature annealing.

Waterproof and Oil Repellent Treatments of Cotton Fabric

The waterproof and oil-repellent finishing of the dyed single-sided plain cotton fabric was carried out by two-dip and two-pad process. The influences of baking temperature (°C), baking time (min), concentration of finishing solution (g/L) and percentage of liquid on waterproof effect of fabric were analyzed;the influences of the contact angle and the baking temperature (°C), the baking time (min) and the concentration of the finishing agent (g/L) on the oil repellency of the fabric were investigated. The results showed that the best water-repellent finishing technology for cotton fabric was the concentration of finishing agent 30 g/L, the baking temperature 110°C, the baking time 1.5 min and the liquid-uptake 70%. The best oil-repellent finishing process for cotton fabric is 35 g/L for finishing agent, 150°C for baking temperature, and 1.5 min for baking time and pick up rate of 80%. After cotton fabric is treated with water-repellent and oil-repellent agent, the water-repellent contact angle of the fabric can reach 128°and the oil-repellent grade 6. The best finishing effect is obtained at this time. After the finishing agent acts on the surface of the fibre, the surface properties of the fibre can be changed, and the surface of the fibre can be changed from hydrophilicity to hydrophobicity. The finishing agent has good film-forming property, which makes the surface of cotton fibre smooth and has good waterproof and oil-repellent performance.

固-液界面接触角测定实验的课程思政设计

固液界面接触角的测定是一个重要的物理化学实验,本案例结合特殊润湿性材料可处理含油废水这一科研进展,将其改进为一个融入课程思政元素的综合创新实验,不仅能提升学生的学习兴趣,还能引导学生学会理论联系实际,利用所学专业知识来保护自然、治理环境,培养学生的社会责任感和专业自豪感,有助于达成创新型人才培养目标。

梯度热处理制备技术加速合金最佳热处理工艺参数筛选

AgCuNiInSn系列电接触合金的合金化程度要求高,需要对合金铸锭进行均匀化热处理来消除铸锭组织中的低熔点非平衡相和枝晶偏析。对于热处理最佳工艺参数的摸索,传统的“试错法”存在实验量巨大、研发周期长、研发效率低等不足。本研究提出一种梯度温度场均匀化热处理高通量制备方法,用于Ag-6Cu-0.5Ni-0.5In-0.5Sn合金最佳均匀化热处理条件筛选。结果表明,经过608.13℃/1h的梯度均匀化热处理,再经过75%的塑形变形后,硬度达到最大值为168.7,合金组织晶粒和第二相体积较小,点状第二相弥散分布较多且均匀,细晶强化效应和弥散强化效应最为显著。

铝合金在接触固溶处理工艺中的界面传热系数

采用有限元模拟和反演优化(IO)方法测定7075铝合金在不同压力、表面粗糙度和温度下接触固溶处理过程中的界面传热系数(IHTC)值,并分析这些因素对IHTC的影响。结果表明:随着压力的增加,IHTC值先增加,然后保持稳定;IHTC值随表面粗糙度的增大而减小;随着板温的升高,瞬时IHTC值先增大后减小。基于压力、表面粗糙度和温度的综合影响规律,建立多因素影响的IHTC理论模型。使用此模型能较好地预测不同条件下合金的瞬时IHTC值。

固态电池石榴石电解质与锂金属界面改善的综述

固态电池因高比能量、高安全性和宽使用温度范围等优势,具有广阔的应用前景。石榴石固态电解质具有较高的离子电导率、较宽的电化学窗口以及对锂金属稳定等特点,是构筑全固态锂金属电池较有发展前景的固态电解质之一。石榴石固态电解质与锂金属之间存在着接触不良、高界面阻抗等问题。对石榴石电解质/锂负极的界面特性及界面问题的成因进行分析,并总结电解质和锂金属表面处理以及引入界面层等调控策略,包括使用锂合金、去除电解质表面的污染物,以及使用原子层沉积、磁控溅射沉积、真空蒸镀等技术添加修饰层,为解决石榴石与锂负极的界面问题提供借鉴。

曝气生物滤池影响因素及脱氮除磷研究进展

曝气生物滤池(BAF)是一种集吸附、过滤和生物氧化为一体的新型污水生物处理技术。本文介绍了影响BAF运行效果的因素(如填料、水力负荷、气水比、反冲洗、C/N和温度等),综述了BAF在去除水中各类污染物质的最新研究进展,并就该工艺在有机及悬浮物去除、硝化除氨、脱氮除磷、耦合其他工艺等方面所具备的优势与不足进行了阐述,为BAF的发展与应用研究提供一定的科学参考。

超疏水亲油丙纶的研究及性能

利用等离子技术刻蚀丙纶无纺布,疏水偶联剂辛基三氯硅烷进行化学相沉积修饰降低其表面能,制备出超疏水亲油的丙纶材料。运用正交试验对等离子体处理工艺进行优化,通过扫描电镜表征优化工艺后的丙纶形貌,测试了丙纶的比表面积、吸油时间及循环使用性能。结果表明,等离子体处理的优化工艺为:车速5.4m/min,放电电压24kV,作用间距2.4mm,辛基三氯硅烷化学相沉积修饰添加比占无纺布质量分数的28%。测得此无纺布的静态接触角为155.3°吸油率49.30g/g、吸油饱和时间7s,脱油再生重复使用10次后,还有较高的吸油性能,吸油仍高达45.90g/g。

以联络护士为主导的MDT管理模式在院内血糖管理的应用研究

目的探讨以联络护士为主导的多学科综合治疗(MDT)管理模式在院内血糖管理的应用效果。方法选择我院2023年6月至2024年3月收治的非内分泌科住院糖尿病患者200例为研究对象。根据患者不同血糖管理方法,将其分为观察组(100例,采用以联络护士为主导的MDT血糖管理模式)与对照组(100例,采用常规血糖管理模式)。比较两组护理前后空腹血糖(FBG)、2 h餐后血糖(2hPG)、糖化血红蛋白(HbA1c)检测结果及达标率,平均血糖值(Ave)、血糖值标准差(SD)及血糖变异系数(CV)等血糖稳定性指标,胰岛素的相关知识和使用方法的知晓情况评分,住院期间并发症发生率及医疗费用。结果护理后,两组患者FBG、2hPG、HbA1c水平较护理前均降低,对胰岛素的相关知识和使用方法的知晓情况评分较护理前均升高(P<0.05);但观察组患者护理后FBG、2hPG、HbA1c水平均低于对照组,护理后FBG、2hPG、HbA1c达标率及对胰岛素的相关知识和使用方法的知晓情况评分均高于对照组,Ave、SD及CV水平均低于对照组(P<0.05);观察组患者住院期间并发症发生率、医疗费用均低于对照组(P<0.05)。结论以联络护士为主导的MDT血糖管理模式有助于提升糖尿病患者自我认知与管理水平,改善患者血糖控制水平,提高血糖控制达标率,减少临床并发症,降低住院期间的医疗费用。

改性沸石+生物接触氧化处理氨氮实验研究

改性沸石吸附与生物接触氧化组合工艺在处理微污染水中氨氮方面,虽然已经取得了一定的研究成果,但对于组合工艺在不同类型微污染水体中的应用效果缺乏系统的研究。文中通过实验室规模的吸附和生物接触氧化实验,分析了不同操作条件下的氨氮去除效果,发现改性沸石可以有效提升氨氮的去除率,其中有机改性沸石表现最优,氨氮去除率高达98.5%,同时,生物接触氧化工艺中,曝气量和HRT的增加均能提高氨氮去除率,生物膜的成熟度也对去除效果有正面影响。

生物接触氧化法处理生活污水的试验

生物接触氧化法在生活污水处理中具有显著优势,以往应用的处理装置针对性不强,局限性较高。以填料塔反应器作为试验装置,展开利用生物接触氧化法处理生活废水的方法研究。采取试验设计方式,结合生物接触法处理生活污水的工艺特征及处理规律,分析各方面因素对生活污水处理的影响,通过试验得出可靠数据,为生活污水处理操作数据的合理调控提供参照,提升生活污水处理成效。

水解酸化+生物接触氧化在印染废水处理中的应用

为了更高效的处理印染废水中的污染物,采用水解酸化+生物接触氧化法对混合染料废水进行处理,研究各工艺阶段对废水处理的影响,且因印染废水中化学需氧量(COD)较高,重点考察COD的去除效果。结果表明,水解酸化阶段对COD的去除率为29.17%;进一步通过2级生物接触氧化后,COD去除率提高至90.92%;当流量为5 L/h,pH为7时,可实现COD的较高去除率即92.58%,且在一定程度上节约处理成本。该方法可实现对混合染料废水中COD、五日生化需氧量(BOD5)、色度以及氨氮的有效去除。

生物接触氧化技术在含磷生活污水处理中的应用研究

为了强化生活污水处理,有效解决生活污水中含磷量高、处理成本高的问题,本文结合某市生活污水中TP的时空演变特征,分析了一种生物接触氧化技术。通过构建预处理系统、选择合适的氧化技术填料、科学设计污水处理参数等,详细拆解该项技术的应用过程。最终启动生物接触氧化池对生活污水进行处理,获得了生活污水中总磷(TP)的良好去除效果,旨在为城市全面推广与实施污水处理工程提供技术参考。

基片等离子处理对PTFE微波基板性能的影响

采用等离子处理对聚四氟乙烯(PTFE)基片进行表面处理,研究气体流量、放电功率、处理时间的变化对PTFE基片微观形貌和接触角的影响,进而研究对PTFE微波基板介质损耗、吸水率、剥离强度等综合性能的影响。实验结果表明,等离子体处理可以有效增加基片表面粗糙度,降低PTFE基片的接触角,提高其表面能,使覆铜箔层压板的铜箔与介质层之间结合强度提升,制备的PTFE微波基板的剥离强度可接近未处理之前剥离强度的3倍。