Mechanism of Action and Therapeutic Effect of Modified Qiwei Baishu Powder in Diabetes

Objective:To study the mechanism of action and therapeutic effect of modified Qiwei Baishu powder in diabetic patients.Methods:From January 2021 to January 2022,80 diabetic patients were recruited in our study and divided into two groups by the random number table method.Group A was treated with modified Qiwei Baishu powder,whereas group B was treated with western medicine.The therapeutic effect,traditional Chinese medicine(TCM)syndrome score,blood sugar level,and incidence of adverse reaction were compared between the two groups.Result:The therapeutic effect in group A was significantly higher than that in group B(P<0.05);the TCM syndrome scores of group A were significantly lower than those of group B(P<0.05);the fasting blood glucose(FBG),2 hour-postprandial blood glucose(PBG),and glycosylated hemoglobin(HbA1c)levels of group A were significantly lower than those of group B(P<0.05);the incidence of adverse reaction in group A was significantly lower than that in group B(P<0.05).Conclusion:On the basis of western medicine,the addition of modified Qiwei Baishu powder can maintain stable blood sugar levels in patients and alleviate diabetic symptoms;thus,it is not only effective,but also safe for clinical use in diabetes.

Strengthening of HT250 by modified ultra-fine ceramic powders

In this study, three kinds of modified ultra-fine ceramic powders marked A, B and C, which were prepared by each of three different modifiers mixing with a commercial SiC, were added to HT250 cast iron, respectively, and the effects of the modified ultra-fine ceramic powders on microstructure, mechanical properties and wear resistance were studied. Metallographic examination, tensile test, scanning electron microscopy, and three-dimensional surface topography were applied to analyze and compare the samples containing modified powder with the original samples. The results showed that the most obvious modification effect among the powders was seen in the sample containing powder A, with the graphite and eutectic cells being refined, the tensile strength being increased by 36.9%, and the wear resistance being improved by 45.5% and 47.2% under loads of 150 N and 300 N, respectively. The improvements of mechanical properties and wear resistance in the HT250 cast iron with the modified ultra-fine ceramic powders were attributed to the synergistic effect of the grain refinement with the powder acting as a hard particle phase and the lubrication by the graphite.

Hybrid Modified Rubber Powder and Its Application in Cement Mortar

This research focused on using the waste rubber powder as a kind of regenerate resources to improve the mechanical properties of cement mortar.The two kinds of hybrid modified rubber powder TRP and ATRP were prepared by sol-gel method and then used in cement mortar.The structures and properties of them were studied.It is shown that the nano Si-O-Si network is generated in TRP and ATRP networks and the hydrophilic group is grafted on the surface of ATRP.The mechanical properties of rubber-treated mortar（RTM） were tested and the microstructures of them were also studied.Compared to the mortars with unmodified rubber powders（RP）,NaOH treated rubber powder（SRP） and coupling agent treated rubber powder（CRP）,the RTM with ATRP has the highest compressive strength and flexural strength.The stress-strain curves shown that the peak of stress of RTM with ATRP is increased and indicated the higher compression deformation and toughness.It is found that the interfacial adhesion between the ATRP and cement mortar is increased distinctly by SEM,which results in enhanced ductility and mechanical properties of RTM with ATRP.

Synthesis of Neodymium-Doped Yttrium Aluminum Garnet (Nd∶YAG) Nano-Sized Powders by Low Temperature Combustion

The homogeneously dispersed, less agglomerated (Nd0.01Y0.99)3Al5O12 nano-sized powders were synthesized by the low temperature combustion (LCS), using Nd2O3, Y2O3, Al(NO3)3·9H2O, ammonia water and citric acid as starting materials. This method effectively solves the problems caused by solid-state reaction at high temperature and hard agglomerates brought by the chemical precipitation method. The powders were characterized by TG-DTA, XRD, FT-IR, TEM respectively and the photoluminescence (PL) spectra of (Nd0.01Y0.99)3Al5O12 green and sintered ceramic disks were measured. The results show that the forming temperature of YAG crystal phase is 850 ℃ and YAP crystal phase appearing during the calcinations transforms to pure YAG at 1050 ℃. The particle size of the powders synthesized by the LCS is in a range of 20～50 nm depending on the thermal treatment temperatures. The effectively induced cross section (σin) with the value 4.03×10-19 cm2 of (Nd0.01Y0.99)3Al5O12 ceramics is about 44% higher than that of single crystal.

Effects of Zhenren Yangzang Decoction Combined with Modified Shenling Baizhu Powder on Immune Function and Intestinal Microecology of Diarrhea Patients with Deficiency and Cold Syndrome

OBJECTIVE: To observe the effects of Zhenren Yangzang Decoction combined with modified Shenling Baizhu Powder on the immune function and intestinal microecology of diarrhea patients with deficiency and cold syndrome. METHODS: A total of 60 diarrhea patients with deficiency and cold syndrome were randomly divided into observation group and control group, with 30 cases in each group. The control group was treated with conventional western medicine. The observation group was given the treatment of Zhenren Yangzang Decoction combined with modified Shenling Baizhu Powder on the basis of the same treatment for 4 weeks. The clinical symptoms, fecal flora and immunoglobulin content of the 2 groups were observed and the clinical efficacy was evaluated. RESULTS: After treatment, the symptoms scores of fecal diarrhea, aversion to cold, cold limbs, loss of appetite, cold and painful waist and knee, abdominal fullness, abdominal distension and abdominal pain, and intestinal bacilli contents were significantly decreased(P < 0.05). The contents of lactobacillus, bifidus bacilli, IgG, IgM and IgA were significantly increased(P < 0.05), and the improvement of the above indexes in the observation group was significantly better than that in the control group(P < 0.05). The total effective rate after treatment in the observation group was 93.3%, which was significantly higher than 73.3% of the control group(P < 0.05). CONCLUSION: The treatment of diarrhea patients with deficiency and cold syndrome with Zhenren Yangzang Decoction and modified Shenling Baizhu Powder can effectively improve the intestinal micro-ecological environment, improve the immune function of patients and promote the rapid recovery of patients.

Micro-aluminum powder with bi-or tri-component alloy coating as a promising catalyst:Boosting pyrolysis and combustion of ammonium perchlorate

A novel design of micro-aluminum(μAl)powder coated with bi-/tri-component alloy layer,such as:Ni-P and Ni-P-Cu(namely,Al@Ni-P,Al@Ni-P-Cu,respectively),as combustion catalysts,were introduced to release its huge energy inside Al-core and promote rapid pyrolysis of ammonium perchlorate(AP)at a lower temperature in aluminized propellants.The microstructure of Al@Ni-P-Cu demonstrates that a three-layer Ni-P-Cu shell,with the thickness of~100 nm,is uniformly supported byμAl carrier(fuel unit),which has an amorphous surface with a thickness of~2.3 nm(catalytic unit).The peak temperature of AP with the addition of Al@Ni-P-Cu(3.5%)could significantly drop to 316.2℃ at high-temperature thermal decomposition,reduced by 124.3℃,in comparison to that of pure AP with 440.5℃.It illustrated that the introduction of Al@Ni-P-Cu could weaken or even eliminate the obstacle of AP pyrolysis due to its reduction of activation energy with 118.28 kJ/mol.The laser ignition results showed that the ignition delay time of Al@Ni-P-Cu/AP mixture with 78 ms in air is shorter than that of Al@Ni-P/AP(118 ms),decreased by 33.90%.Those astonishing breakthroughs were attributed to the synergistic effects of adequate active sites on amorphous surface and oxidation exothermic reactions(7597.7 J/g)of Al@Ni-P-Cu,resulting in accelerated mass and/or heat transfer rate to catalyze AP pyrolysis and combustion.Moreover,it is believed to provide an alternative Al-based combustion catalyst for propellant designer,to promote the development the propellants toward a higher energy.

STUDY ON THE FUNCTION OF REINFORCED RUBBER OF MODIFIED POWDERED COAL ASH

The powdered coal ash (PCA) was classified, then the ash particle (- 45μm) was modified by a surface active agent and obtained modified powder coal ash (MPCA). The character of the MPC was investigated, when it was used as a new type reinforced filler of rubber.The results show that MPCA can replace or party replace carbon black or silica as reinforced fillers of rubbers.

Preparation and Sinterability of Mn-Zn Ferrite Powders by Sol-Gel Method

Mn-Zn spinel ferrites were synthesized by sol-gel method. Effects of calcined temperature on structure and particle size of MnZnFe2O4 were investigated by X-ray diffraction (XRD) and scanning electron microscopy (SEM). XRD patterns indicate that the ultra fine Mn-Zn ferrite exhibits a spinel crystal structure. SEM images show that the powder fired at 900℃for 2 h has an average diameter of 60 ~ 90 nm. The particle size becomes larger with the increasing of calcined temperature and the distribution of particle becomes even more homogeneous. Sintering behaviors of synthesized ferrite powders depend on the powder characteristics and high temperatures have induced the good crystallization of particles.

Synthesis and Characterization of Nano-sized Boron Powder Prepared by Plasma Torch

Hydrogen thermal plasma jet was employed to prepare nano-sized boron powder with hydrogen reduction of BCI3. The maximum yield of nano-sized boron powders was about 50% with the operational conditions of H2/BCl3 of 4.5：1, total feed of 4.9 m3/h, and plasma power of 25 kW. The samples were analyzed by X-ray diffraction （XRD）, field emission scanning electron microscopy （FE-SEM）, and inductively coupled plasma - mass spectrometry （ICP-MS）, inductively coupled plasma - atomic emission spectrometry （ICP-AES）, inductive combustion infrared absorption （ICIA） and infrared thermal conductivity of oxygen and nitrogen analyzer （ITCA）. The results show that the boron powders have different crystal structures with higher dispersion and purity. The average diameter is about 50 nm, and the purity is 90.29% or so. This new technology can use simple process to produce high quality boron powders, and is feasible for industrial production.

Corrosion resistance of waterborne epoxy coating pigmented by nano-sized aluminium powder on steel

A novel kind of waterborne epoxy coating pigmented by nano-sized aluminium powders on high strength steel was formulated. Several coatings with different pigment volume content (PVC) were prepared. The coating morphology was observed using scanning electron microscopy (SEM), and the electrochemical properties were investigated by electrochemical impedance spectroscopy (EIS). Immersion test and neutral salt spray test were also conducted to investigate the corrosion resistance of the coating. It is demonstrated that the critical pigment volume content (CPVC) value is between 30% and 40%. The coating with PVC of 30% exhibits good corrosion resistance in 3.5% (mass fraction) NaCl solution.

Modification of Powder Compaction Equation of Kawakita

Based on an analysis of the validity of the powder compaction equation of Kawakita,a modified compaction equation is proposed.It is shown by the statistical analysis on the experimental compaction data of various powders that in most cases the proposed equation provides a better description of the compaction data than Kawakita's equation,especially in the cases of the compaction of hard material powders.

Modification of Carbon Nanotube Powder Microelectrode and Nitrite Reduction

The properties of the carbon nanotube powder microelectrodes (denoted CNTPME) are remarkably altered by anodic pretreatment and preadsorption of mediators. It seems that anodic pretreatment leads the long and tangled carbon nanotubes to be partially cut shorter, resulting in more openings as shown by TEM. Besides, the anodic pretreatment may adjust the hydrophobicity of nanotubes to match with that of Os(bpy)32+. As a result, the real surface area and the ability of adsorbing mediator Os(bpy)32+ of the nanotubes are markedly increased so as to effectively catalyze NO2- reduction in acidic solution.

胶粉纤维改性水泥稳定碎石抗裂性能研究

针对水泥稳定碎石基层易开裂问题,在混合料中掺入适量胶粉及聚乙烯醇(PVA)纤维,开展强度、抗压回弹模量、干缩性能和扫描电镜试验(SEM);分别掺入橡胶粉、改性胶粉、PVA纤维、不同水泥剂量的胶粉纤维,对比其对混合料抗裂性能的影响。发现掺入材料对水泥稳定碎石混合料性能具有明显影响。掺入胶粉、改性胶粉后会降低混合料强度和抗压回弹模量,提升抗干缩性能;掺入纤维能增强混合料强度、模量和抗干缩性能;加入不同水泥剂量的胶粉纤维对混合料强度、抗压回弹模量提升效果明显,但降低了抗干缩性能;宏观力学指标试验和SEM试验结果显示出改性胶粉纤维与水泥基具有良好的黏结性,可以提升水泥稳定碎石混合料的抗裂能力。

加味芎蝎散对咳嗽高敏综合征大鼠神经源性炎症的影响

目的探讨加味芎蝎散对咳嗽高敏综合征大鼠咳嗽及神经源性炎症的影响。方法取雄性SD大鼠36只,随机选取6只作为正常组,剩余大鼠采用密室烟熏法建立咳嗽高敏综合征模型。将造模成功大鼠随机分成5组,每组6只。加味芎蝎散高、中、低剂量组分别给予加味芎蝎散12 g/(kg·d)、6 g/(kg·d)、3 g/(kg·d)灌胃,磷酸可待因组给予磷酸可待因10 mg/(kg·d)灌胃,正常组及模型组给予等量蒸馏水灌胃,均连续灌胃3周。分别在灌胃1周、2周、3周末进行咳嗽反应检测,记录3 min内的咳嗽次数;灌胃3周后,HE染色观察肺组织病理形态,尼氏染色观察大脑皮质神经元尼氏体,免疫组化法检测支气管组织中P物质(SP)、降钙素基因相关肽(CGRP)、瞬态电压感受器阳离子通道(TRPV1)蛋白和大脑皮质中白细胞介素-6(IL-6)、白细胞介素-1β(IL-1β)表达情况。结果与正常组比较,模型组大鼠咳嗽次数明显增多(P<0.05);支气管黏膜上皮变性,平滑肌层排列紊乱、增生,管壁大量炎性细胞浸润;神经元细胞形态不规则,尼氏体减少;支气管组织中SP、CGRP、TRPV1蛋白表达积分光密度值和大脑皮质中IL-6、IL-1β表达积分光密度值均明显升高(P均<0.05)。与模型组比较,加味芎蝎散高、中剂量组大鼠咳嗽次数明显减少(P均<0.05),病理变化均有不同程度的减轻,支气管组织中SP、CGRP、TRPV1蛋白表达积分光密度值和大脑皮质中IL-6、IL-1β表达积分光密度值均明显降低(P均<0.05)。结论加味芎蝎散可以明显减轻咳嗽高敏综合征大鼠气道上皮及大脑皮质神经元病变,抑制咳嗽反射,机制可能与抑制神经源性炎症有关。

改性磷尾矿粉对红壤生境玉米生长及土壤理化性状的影响

通过玉米田间试验,研究改性磷尾矿粉对红壤生境玉米生长及土壤理化性状的影响,为磷尾矿的合理利用以及酸性红壤农田防治施肥技术提供理论依据。供试玉米试验地位于曲靖市马龙县旧县镇,设置如下处理:(1)当地习惯施肥(CK);(2)当地习惯施肥+改性磷尾矿粉3000 kg/hm^(2)(T_(1));(3)当地习惯施肥+改性磷尾矿粉6000 kg/hm^(2)(T_(2));(4)当地习惯施肥+改性磷尾矿粉9000 kg/hm^(2)(T_(3));(5)当地习惯施肥+改性磷尾矿粉12000 kg/hm^(2)(T_(4));(6)当地习惯施肥+改性磷尾矿粉15000 kg/hm^(2)(T5),每个处理3次重复,测定玉米产量和pH、有机质、交换性钙等土壤理化性质。结果表明:施用改性磷尾矿粉显著提高土壤pH,较CK最高提高了23.20%,显著降低了交换性酸总量、交换性Al^(3+)含量和有效锰含量,最高分别降低了79%、70%和29.18%;施用改性磷尾矿粉提高了土壤交换性钙,较CK,最高显著提升了38.19%;施用改性磷尾矿粉的百粒重最高较CK处理提高了4.03%,对玉米产量无显著影响。施用改性磷尾矿粉可通过降低土壤交换性酸,提高阳离子交换量、土壤交换性钙来消减土壤酸化,不同施用量的改性磷尾矿粉对土壤和玉米的影响有所差异,其中施用6000 kg/hm^(2)的改性磷尾矿粉(T_(3)处理)是最优的施肥方案,它可以在不影响玉米产量的前提下,最大程度地改善土壤理化性质,降低土壤酸化程度,增加土壤团聚体稳定性。

加味四妙散对湿热痹阻型慢性痛风性关节炎炎症因子的影响及相关性分析

目的:通过分析慢性痛风与白细胞介素-1β(IL-1β)、白细胞介素-6(IL-6)、肿瘤坏死因子-α(TNF-α)与中医症状及临床指标间存在的关联性,探究加味四妙散治疗慢性痛风的作用机制。方法:60例符合纳入标准的湿热痹阻型慢性痛风性关节炎患者,依据随机数字表随机分为观察组和对照组各30例,同时设健康组30例。对照组给予口服非布司他治疗;观察组在对照组的基础上联合加味四妙散治疗,治疗周期为4周。观察患者一般临床资料、中医症状积分、生化学指标,同时采用酶联免疫吸附法(ELISA)测定IL-1β、TNF-α和IL-6水平,分析IL-1β、IL-6、TNF-α与中医证候积分及生化学指标的相关性。结果:与健康组相比,慢性痛风患者IL-1β、TNF-α、IL-6水平显著升高(P<0.01);慢性痛风患者关节疼痛、关节肿胀、大便黏滞及舌象与IL-1β、TNF-α和IL-6呈正相关,关节压痛、关节发热及身体倦怠与IL-1β、TNF-α呈正相关;黏腻、口苦及小便与TNF-α呈正相关,脉象与IL-1β呈正相关,IL-1β与FPG、TC、ESR、VAS评分呈正相关,TNF-α与BMI、UA、HDL、ESR、VAS评分呈正相关,与HDL呈负相关,IL-6与SBP、UA、CRP呈正相关(P<0.05,P<0.01);两组患者治疗后组内比较,IL-1β、TNF-α和IL-6水平显著降低(P<0.01),组间比较,观察组IL-1β水平较治疗组显著降低(P<0.05);与本组治疗前比较,两组患者关节疼痛,关节压痛,关节肿胀,关节发热,活动障碍,身困倦怠,黏腻、口苦,小便黄赤,舌象中医症状评分均明显降低(P<0.05,P<0.01)。与对照组治疗后比较,观察组患者关节发热,身困倦怠,黏腻、口苦,大便黏滞,小便黄赤,舌象,脉象积分均明显降低(P<0.05);与本组治疗前比较,BMI、SBP、DBP、UA、Scr、BUN、FPG、LDL、TG、TC、ESR、CRP、IL-1β、TNF-α、IL-6水平及VAS评分均明显升高(P<0.05,P<0.01);与对照组治疗后比较,观察组患者BMI、ESR、IL-1β水平及VAS评分均明显降低(P<0.05)。观察组总有效率为80.0%(24/30),对照组总有效率为56.7%(17/30),观察组总有效率明显高于对照组,差异具有统计学意义(χ^(2)=11.916,P<0.05)。结论:痛风患者的IL-1β、IL-6、TNF-α水平与肥胖、血糖、血脂、UA、关节肿痛、炎症状况及全身症状密切相关;加味四妙散可有效改善湿热痹阻型慢性痛风性关节炎的临床症状并减轻炎症反应,且有较好的安全性,其机制可能与抑制IL-1β相关炎症信号通路有关。

微纳化封装芳香载体的制备及缓释性能研究

芳香纺织品是备受关注的功能纺织品。芳香气味具有舒缓压力、调节情绪、改善睡眠等功效。但是芳香物质存在易挥发的问题,提高香味的长效释放和耐水洗性一直是芳香纺织品制备有待解决的问题。文中以硅烷偶联剂对纳米二氧化硅进行表面结构调控处理,构建有机-无机复合材料,探索芳香物质微纳化封装;将微纳化封装的芳香载体材料通过原位固定法负载到织物上,并对织物的芳香释放性能和耐久效果进行评价。结果表明,由微纳化封装的有机-无机复合芳香载体制备的芳香纤维结构体具有适宜的香气和长效释放的效果,由此形成的织物加香技术,可广泛应用于纺织品芳香整理,在芳香功能纺织品的制备应用中拥有巨大潜力。

玉屏风散加减联合西药治疗促进轻型新冠病毒感染孕妇核酸转阴的疗效观察

[目的]探讨玉屏风散加减联合西药治疗轻型新冠病毒感染孕妇的临床疗效。[方法]以上海市公共卫生临床中心2022年4月至6月收治的轻型新冠病毒感染孕妇作为研究对象,随机分成治疗组(48例)及对照组(52例)。对照组给予退热、止咳对症及维生素C等西药治疗,治疗组在对照组基础上给予玉屏风散加减治疗。对比两组患者治疗前后的各症状积分、不良妊娠结局发生率、总有效率和淋巴细胞、C反应蛋白、白细胞介素-2受体、白细胞介素-6等实验室指标变化,并观察两组患者病毒核酸转阴和疾病转归情况。[结果]与对照组比较,治疗组症状总积分显著下降(P<0.001),总有效率显著升高(P<0.01),炎症指标C反应蛋白、白细胞介素-6水平较前显著下降(P<0.001,P<0.01),而淋巴细胞计数较前显著升高(P<0.001),不良妊娠结局发生率两组间差异无统计学意义(P>0.05)。[结论]玉屏风散加减联合西药治疗可显著改善轻型新冠病毒感染孕妇的临床症状,缩短核酸转阴时间,且不会增加不良妊娠结局,具有一定的临床价值,值得临床推广应用。

泻黄散加味治疗脾胃积热型小儿便秘疗效及对证候积分的影响

目的研究泻黄散加味与排便训练联合治疗脾胃积热型小儿便秘疗效以及对证候积分和复发的影响。方法将2019年7月—2021年7月共101例脾胃积热型便秘患儿纳入研究,采用随机数字表法将患儿分为两组,分别为对照组50例和观察组51例,对照组接受双歧杆菌三联活菌胶囊和排便训练,而观察组采用泻黄散加味颗粒和排便训练治疗。观察治疗后2组患儿用药前后便秘改善程度及临床疗效差异,比较治疗前后2组患儿中医证候积分、胃肠激素水平[血清胃动素(MTL)、胃泌素(GAS)、胃饥饿素(GHR)]、血清学指标水平[血清P物质(SP)、血管活性肠肽(VIP)、一氧化氮(NO)],统计2组不良反应以及半年内复发率并进行比较。结果治疗4周后,2组便秘患者症状自评量表(PAC-SYM)各项评分、大便干结、腹胀、舌红苔黄、口干口臭均较治疗前明显降低(P<0.05),且观察组低于对照组(P<0.05);2组患儿MTL、GAS、GHR、SP、VIP指标均较治疗前显著提升(P<0.05),且观察组比对照组更高(P<0.05),NO显著降低(P<0.05),且观察组比对照组更低(P<0.05)。2组患儿在治疗期间不良反应发生率相似,差异没有统计学意义(P>0.05)。所有患儿治疗2个月均已治愈,经过6个月的随访,观察组便秘复发率明显低于对照组(P<0.05)。结论泻黄散加味与排便训练联合治疗脾胃积热型患儿便秘表现出显著效果,使患儿便秘症状和胃肠激素表达均得到可观改善,纠正其消化系统的神经调节机制,有利于预防复发。

矿渣微粉改良红层填料的力学特性及其机理分析

为研究矿渣微粉改良红层填料的力学特性及其作用机理,通过无侧限抗压强度、直剪等试验,对不同矿渣微粉掺量下的红层填料进行了强度特性分析,并采用X衍射、热重分析、红外光谱、激光粒度、核磁共振和扫描电镜等微观分析方法,围绕矿渣微粉改良土体的作用机理进行了研究。试验结果表明,矿渣微粉对红层填料的力学强度和水稳定性具有较好的改良作用,改良填料的无侧限抗压强度由0.76 MPa逐渐增大至3.10 MPa;黏聚力与内摩擦角也得到了显著提高。通过红外光谱、激光粒度和核磁共振分析发现,改良填料颗粒间Al^(3+)阳离子配位的振动峰增强,降低了黏土矿物的双电层厚度,土颗粒团聚性显著增强,孔隙分布得到优化;通过X射线衍射和热重分析证明了水化产物的生成过程;扫描电镜观测到改良填料的具体作用机理:主要为填充效应和胶凝效应,其胶凝效应包括水化作用和离子交换作用。对微观扫描图的定量化分析进一步表明土体结构复杂程度增大,颗粒粗糙程度及骨架性增强。