Species distribution of polymeric aluminium ferrum——timed complexation colorimetric analysis method of Al-Fe-Ferron

The effects of the calorimetric buffer solutions were investigated while the two colorimetric reactions of AI-ferron complex and Fe-ferron complex occurred individually, and the effects of the testing wavelength and the pH of the solutions were also investigated. A timed complexatian colorimetric analysis method of Al-Fe-ferron in view of the total concentration of {AI + Fe} was then established to determine the species distribution of polymeric Al-Fe. The testing wavelength was recommended at 362 net and the testing pH value was 5. With a comparison of the ratios of n(Al)/n(Fe), the standard adsorption curves of the polymeric Al-Fe solutions were derived from the experimental results. Furthermore, the solutions' composition were carious in both the molar n(Al)/n(Fe) ratios, i.e. 0/0, 5/5, 9/1 and 0/10, and the concentrations associated with the total ( Al + Fe which ranged from 10(-5) to 10(-4) mol/L..

High performance of zinc-ferrum redox flow battery with Ac^-/HAc buffer solution

A green low-cost redox flow battery using Zn/Znredox couple in HAc/NaAc medium and Fe/Feredox couple in HSOmedium was first proposed and investigated for potential stationary energy storage applications. The presence of HAc/NaAc in the negative electrolyte can keep the pH between 2.0 and 6.0even when a large amount of Hions move into negative electrolyte from positive electrolyte through ion exchange membrane. In the pH range of 2.0–6.0, the chemical reaction of Zn species with Hspecies is very insignificant; furthermore, the electroreduction of Hion on the negative electrode is significantly suppressed at this pH range. The zinc-ferrum redox flow battery（Zn/Fe RFB） operated within a voltage window of 0.5–2.0 V with a nearly 90% utilization ratio, and its energy efficiency is around 71.1% at room temperature. These results show that Zn/Fe RFB is a promising option as a stationary energy storage equipment.

Ferrum公司推出新型的F400系列封罐机

Ferrum公司作为全球领先的罐体灌装、封合设备的设计和制造者，产品广泛应用于食品、饮料行业。Ferrum公司凭借自己的理念，对封罐设备不断做出刨新，已成为该领域的领导者。

Thermal stability and sputtering resistance under irradiation of yttria dispersed ferrum films

Oxide dispersion strengthened （ODS） steels are considered as potential candidates for high temperature applications in fusion reactors be-cause of their excellent thermal creep behavior. In the present work, the double-target magnetron co-sputtering method was recommended to prepare yttria dispersed ferrum films. Vacuum annealing and ion irradiation were carried out to study the surface topography and structural features of the prepared yttria dispersed ferrum samples. Experiments proved that while the yttria doping ratio in the ferrum film increases, the recrystallization temperature of the film will be enhanced and the sputtering damage by Xenon ion irradiation will be lowered. The sput-tering resistance of the obtained films would be improved with the growing of grains under vacuum annealing.

Effect of Ferrum and Molybdenum Nutrition on Root Nodule and Physiological Growth of Vicia villosa Roth in Seedling Stage

[Objective] The paper was to explore the effects of ferrum and molybdenum nutrition on root nodule and physiological growth of Vicia villosa in seedling stage. [Method] A local cultivar of Qujing city,Vicia villosa,was studied using soilless cultivation method,and the effects of ferrum,molybdenum nutrition on root nodule and physiological growth of V. villosa in seedling stage were explored by adding 0. 01 mmol/L sodium molybdate and 0. 2 mmol/L ferrous sulfate respectively or simultaneously in the Hoagland's nutrient solution with the removal of ferrum and molybdenum salt. [Result]Ferrum and molybdenum significantly increased the number and weight of root nodule; the effect of single molybdenum treatment was the best,and the number and weight of root nodule in single molybdenum treatment were nearly 100% and 150% higher than that of the control. After treated by ferrum and molybdenum nutrition,the stem length and biomass of V. villosa decreased at varying levels,while root length and root shoot ratio increased significantly; the decrease extent of stem length in ferrum treatment and composite treatment was greater than that in molybdenum treatment,and the increase extent of root length in molybdenum treatment was the greatest. Application of ferrum and molybdenum fertilizer significantly improved ferrum and molybdenum content of V. villosa plants,and their soluble protein and free amino acid content increased at varying levels; single application of ferrum led to the greatest increase,while phosphorus content decreased at varying levels.The soluble sugar content of V. villosa decreased significantly at 90 d post ferrum and molybdenum application; application of molybdenum fertilizer reduced the starch content while ferrum fertilizer increased the starch content of V. villosa. Moreover,application of ferrum and molybdenum fertilizer reduced the SOD activity and enhanced the POD activity of V. villosa. [Conclusion] The application of ferrum and molybdenum fertilizer promotes the growth of root nodule and V. villosa plant.

Kinetic Mechanism in the Process of Carbothermal Reduction of Ferrum Niobate

Ferrum niobate was synthesized by solid-phase sintering method in a vacuum carbon tube furnace at 1 300 ℃ for 180 min. The phase transformation of ferrum niobate carbothermal reduction process was studied by XRD. The reduction reactions of ferrum niobate in different temperature stages were determined by the TG-DSC curve. Meanwhile, according to the TG curve, the reaction kinetics parameters were calculated by A.W.Coats integration and the control steps in different temperature stages were ascertained. The results showed that the reduction of ferrum niobate starts at the temperature of 1 000 ℃, and the reduction process carries out in two steps according to sintering temperature.In a temperature range of 1 000-1 238 ℃(the first step), the main reduction products are Nb O2 and Fe; the kinetic equation of initial stage is [-ln(1-α)]4=kt, controlled by nucleation growth, and the apparent activation energy is 388 k J/mol; with the temperature increasing, the kinetic equation is α+(1-α)ln(1-α)=kt, which is the Valensi two-dimensional diffusion kinetic equation, and the apparent activation energy is 264.4 k J/mol. The main reaction in a range of 1 238-1 344 ℃(the second step) is the reduction of Nb O2 to Nb C, the kinetic equation is [(1-α)-1/3-1]2=kt, which is controlled by the three-dimensional diffusion, and the apparent activation energy is 482.7 k J/mol.

Ferrum公司使预浓缩锥与离心机一体化

Ferrum公司在离心机中发展了预浓缩锥的新结构。在离心机运行的过程中，能够一定程度地改善进料的条件。Ferrum公司在离心机内增加的预浓缩锥实质上是由圆锥形状的打孔的薄板组成。悬浮液在到达圆柱形转鼓的筛网之前，首先要经过这个预浓缩锥。

乐惠-Ferrum的超高速易拉罐包装线

近期，乐惠-Ferrum的超高速易拉罐包装线亮相2016 CBB展，它将助力啤酒饮料行业易拉罐包装的快速发展Ferrum百年来一直坚持只和世界一流灌装机制造商合作，从2016年5月乐惠和瑞士Ferrum公司正式开始合作，乐惠以卓著的产品性能和令人信服的业绩成为Ferrum信赖的合作伙伴。在刚刚结束的上海CBB展，乐惠与Ferrum公司联合推出为精酿啤酒定制的craftcan易拉罐组合机，将很快推出9万罐的超高速易拉罐包装线。

用Cyanex 302萃取废三元正极材料浸出液中铁铜试验研究

研究了用Cyanex 302(主要成分为二(2,4,4-三甲基戊基)单硫代次磷酸)萃取分离废三元正极材料浸出液中的铁和铜,考察了H+浓度、萃取剂浓度、温度对Cyanex 302萃取分离性能的影响,确定了反萃取负载有机相中铁、铜的工艺条件,在此基础上设计了从废三元正极材料浸出液中萃取铁和铜的工艺流程。结果表明:最佳萃取条件为Cyanex 302浓度0.1 mol/L,H^(+)浓度0.1 mol/L,室温;在该条件下,铁、铜萃取率均大于99.9%,镍、钴、锰、锂萃取率均低于0.003%;铁的最佳反萃取剂为1 mol/L H_(2)SO_(4),铜的最佳反萃取剂为1.5 mol/L HNO_(3)。该工艺能有效萃取分离浸出液中的铜、铁。

Mechanical and magnetic properties of copper dispersed ferrum films under heat treatment

The Cu-containing steels are widely used for nuclear pressure vessel materials because of their good performance under high pressure and high temperature. In this article, magnetron sputtering was used to prepare iron films with various Cu contents. The samples were annealed at temperature range of 300–500 °C, and the structural,mechanical, and magnetic properties were studied. The results show that both hardness and modulus change along with copper content and annealing temperature. The change in coercivity after annealing is similar to that of hardness. The crystal grain growth in matrix ferrum and Cu precipitation during annealing influences both the mechanical and magnetic properties.

MWCNT-FAP协效聚磷酸铵阻燃环氧树脂研究

为了资源化利用废水中的氮、磷元素,以含氮、磷、铁的模拟废水和多壁碳纳米管(MWCNT)为原料,以化学沉淀法合成了多壁碳纳米管-磷酸铵铁(MWCNT-FAP),优化了MWCNT-FAP的合成条件。采用红外光谱、能谱、扫描电镜、透射电镜和热重分析等手段对MWCNT-FAP进行表征。将MWCNT-FAP和聚磷酸铵(APP)引入环氧树脂(EP)中制备复合材料(MWCNT-FAP-APP/EP)。采用微尺度燃烧量热法和UL-94方法测试了复合材料的热释放率(HRR)和阻燃性,利用拉伸测试系统对EP复合材料的力学性能进行了测试。结果表明:FAP粒径约为20~30nm。MWCNT-FAP能改善环氧复合材料的阻燃性能和力学性能。加入MWCNT-FAP和APP后,环氧树脂的HRR明显降低,点燃时间延长,MWCNT-FAP-APP/EP可通过UL 94 V-0评级。炭渣分析表明,MWCNT-FAP和APP在降低聚合物可燃性方面具有协同作用。该方法在废水处理、氮磷回收和防火材料等方面具有潜在的应用价值。

罗沙司他胶囊治疗慢性肾衰竭维持性血液透析肾性贫血患者的效果

目的 探讨罗沙司他胶囊治疗慢性肾衰竭维持性血液透析肾性贫血患者的效果。方法 选取2020年10月至2021年6月浙江省温州市中心医院慢性肾衰竭维持性血液透析的肾性贫血患者301例,其中使用重组人促红素注射液皮下注射治疗的患者235例,作为常规组,使用罗沙司他胶囊口服治疗的患者66例,作为观察组,采用倾向性评分匹配法进行匹配后,每组各纳入66例。两组治疗时间均为3个月,比较两组治疗前后贫血指标、铁代谢指标及炎症指标。比较两组疗效,记录两组治疗期间不良反应发生情况。结果 治疗后,两组血红蛋白(Hb)、促红细胞生成素(EPO)、铁(Fe)、转铁蛋白(TRF)高于治疗前,铁蛋白(FER)、C反应蛋白(CRP)低于治疗前,且观察组Hb、EPO、Fe、TRF、FER高于常规组,CRP低于常规组(P<0.05)。观察组临床疗效优于常规组,不良反应总发生率低于常规组(P<0.05)。结论 罗沙司他胶囊治疗慢性肾衰竭维持性血液透析肾性贫血患者,可改善贫血,促进铁代谢,减轻炎症反应和不良反应,效果显著。

铝诱导玉米根系分泌异羟肟酸及对光照和铁素的响应

【目的】探究铝胁迫对玉米根系异羟肟酸分泌量和玉米植株异羟肟酸含量的影响及其相关性,分析铝胁迫下玉米根系异羟肟酸分泌对环境条件(光照和铁素)的响应,为进一步探明玉米耐铝机制提供理论依据。【方法】以泰玉11号(耐铝品种)和郑单958(铝敏感品种)为试验材料,采用水培法,设0µmol/L(对照)和20µmol/L AlCl_(3)处理,分别在3、6、9、12和24 h后,测定玉米根系异羟肟酸分泌量和玉米植株体内异羟肟酸含量,分析玉米根系异羟肟酸分泌量与植株体内异羟肟酸含量的相关性;设光照条件为自然光照(14 h光照/10 h黑暗)和黑暗(24 h),Fe^(3+)浓度为0、5、10和20µmol/L,用0和10µmol/L AlCl_(3)处理24 h后,测定玉米根系异羟肟酸分泌量,分析铝胁迫下光照条件与铁素对玉米根系异羟肟酸分泌的影响。【结果】随着铝胁迫时间的延长,泰玉11号根系异羟肟酸分泌量呈增加趋势,铝胁迫9 h后,开始显著高于对照(P<0.05,下同);而在铝胁迫的各时间段,郑单958与对照均无显著差异(P>0.05,下同),且泰玉11号分泌量显著高于郑单958,泰玉11号分泌持续时间长,分泌量大,而郑单958对铝胁迫及铝胁迫时长均无明显响应。铝胁迫下玉米根系异羟肟酸分泌与玉米植株体内异羟肟酸含量密切相关,泰玉11号的分泌量与根系和叶片异羟肟酸含量呈显著或极显著(P<0.01,下同)正相关,而郑单958的分泌量与根系异羟肟酸含量无显著相关性,与叶片异羟肟酸含量呈显著或极显著负相关,铝诱导根系分泌量的增加与根系和叶片的异羟肟酸含量增加同步。黑暗条件显著提高铝胁迫下玉米根系异羟肟酸的分泌量,铝胁迫下玉米根系异羟肟酸分泌量随着铁浓度的升高整体呈增加趋势,在20µmol/L以上铁浓度时达最高值。【结论】铝诱导耐铝玉米品种泰玉11号分泌异羟肟酸,异羟肟酸的分泌可能与植株体内的异羟肟酸合成代谢相关,铝可能调控异羟肟酸合成代谢与分泌,环境条件(光照和铁素)显著影响铝诱导的玉米根系异羟肟酸分泌量。

玉米低聚肽和小麦低聚肽及其金属螯合物的抗氧化和抗过敏活性

以分析玉米低聚肽和小麦低聚肽理化性质为基础,对2种低聚肽及玉米低聚肽-Ca螯合物与小麦低聚肽-Fe螯合物2种金属螯合物的抗氧化能力和抗过敏活性进行研究。利用DPPH自由基清除能力、羟自由基清除能力及还原能力测试3种方法评价样品的抗氧化能力,并选择透明质酸酶抑制法评价样品的抗过敏活性。抗氧化能力分析表明,4种样品均有较强的抗氧化能力,且在羟自由基清除能力测试中,2种金属螯合物的羟自由基清除率明显高于对应的低聚肽。抗过敏活性分析表明,在质量浓度<20 mg/mL时,低聚肽金属螯合物的透明质酸酶抑制率远高于对应的低聚肽。这与羟自由基测试的结果类似,可见该条件下样品的抗氧化能力和抗过敏活性存在一定的正相关联系。而质量浓度为20~100 mg/mL时低聚肽的抑制率随浓度明显增大,螯合物的抑制率增长则趋于平缓。螯合物在质量浓度<20 mg/mL条件下同时具有较强的抗氧化能力和抗过敏活性,可在食品药品方向进一步应用发展。

磺基水杨酸分光光度法测定铁的质量控制

作者研究了用分光光度法测定样品溶液中铁含量的分析方法。选用磺基水杨酸作为显色剂,以工作曲线法测定样品溶液中铁的含量,并讨论测定铁的最佳条件。本法测定简便、易操作、干扰少、分析成本低,其准确度、精密度均符合测定要求,结果令人满意。

猪血红素中微量元素含量的测定

缺铁性贫血是当今世界上普遍存在的营养缺乏性疾病之一。目前,常用来治疗缺铁性贫血的药物多为硫酸亚铁,但由于服用后胃肠道反应较大,病人很难坚持继续服药。现在,已问世了一种猪血红素离来作为缺铁性贫血的治疗药物,效果十分理想。本文用原子吸收分光光度法(AAS)和荧光分光光度法(FS)对口服原料药猪血红素中的锌、铜、铁、锰、镉、镍、铅、镁和硒的含量进行了测定,

铁和铜电极对电渗效果影响的对比试验研究

对铁和铜电极的电渗效果进行了室内试验研究,通过监测排水量、电极处电势损失、含水率等分析比较了两者对电渗效果的影响,结果表明,铁电极在电渗中的表现优于铜电极。铜作为电渗阳极时,通电4～6 h后其电流有一迅速下降过程,同时阳极电势损失大幅增加。还开展了不同阴阳极材料组合对电渗效果影响程度的试验研究,研究发现阳极材料对电渗效果影响很大,相比之下阴极材料的影响较弱。最后从电化学角度对试验结果作了较为合理的解释。本文首次在电渗过程中发现电化学钝化现象,并指出电化学钝化将大幅降低电渗的效率,实际工程中应避免其发生。

铁基助熔剂对皖北刘桥二矿煤的灰熔融特性影响研究

研究了铁基助熔剂对皖北刘桥二矿煤(AQ)灰熔融特征的影响,并对AQ煤灰在添加铁基助熔剂前后不同热处理温度下的矿物组成进行了XRD和红外光谱分析。结果表明,导致AQ煤灰熔点高的主要原因是1000℃以上形成的莫来石引起的;加入铁基助熔剂可以降低AQ煤灰的熔融温度;在高温下铁基助熔剂与煤灰中其他铝硅酸盐矿物发生反应,生成铁橄榄石和铁尖晶石等低温共熔化合物,从而使煤灰熔点明显下降。

氨基葡萄糖及羧甲基氨基葡萄糖与铁(Ⅱ)、锌(Ⅱ)、钴(Ⅱ)、铜(Ⅱ)配合物的光谱特征

本文研究了氨基葡萄糖及羧甲基氨基葡萄糖分别与铁 (Ⅱ )、锌 (Ⅱ )、钴 (Ⅱ )、铜 (Ⅱ )形成配合物的UV ,IR和1 H NMR光谱特征。配合物紫外的λmax发生了明显紫移 ;在IR谱中 ,配合物的面外振动峰 6 5 5cm- 1较未配位的氨基葡萄糖中的面外振动峰 6 70cm- 1 低 ,且在 990cm- 1 附近出现新的吸收峰 ;在1 H NMR谱中 ,配合物C3上羟基中的质子化学位移较未配位的均移向高场 ,氨基上质子的化学位移较未配位的也移向高场 ,其他碳上羟基中的质子化学位移值不变 ,从而初步证实了配合物中的氮 金属 (N M)键的形成。本文还研究了羧甲基氨基葡萄糖及其与铁 (Ⅱ )、钴 (Ⅱ )、铜 (Ⅱ )配合物的合成。其配合物的IR谱线较未配位的IR谱线并没增多 ,指出这种反常现象是糖环的刚性所至。它们的IR和UV光谱均证实了分子中不存在游离的羰基峰 ,并证实了它们分子中内盐的存在 ,配合物的IR谱中出现新的一组吸收峰 :4 33 1和 4 0 8 9cm- 1 (O—Fe) ,5 0 7 1和 4 95 0cm- 1 (O—Co) ,4 0 3 1和 389 0cm- 1 (O—Cu) ,证实了配合物中的氧 金属键 (O—M)的形成。