Health benefits of pendant from the viewpoint of Persian medicine

Background:Reviewing historical evidence in the various schools of traditional medicine shows that numerous methods have been used to maintain human good health and treatment of diseases.Persian medicine(PM)scholars have been employed different methods to prescribe medications,which can be classified into two main groups:internal uses,including oral,parenteral,and anal,and also external uses such as topical,transdermal,and applying pendants.In this study,we aim to introduce some of the therapeutic pendants.Methods:We reviewed the most famous PM textbooks and current evidence in relevant databases such as PubMed,Science Direct,Scopus,Google scholar and SID related to the topic.Results:In this study,about 100 traditional therapeutic substances were found and finally,thirty-two of them were represented.They were often stones,and some of them were other materials such as metals,gums,and herbs.According to the PM,the utilization of pendants,in addition to cosmetic purposes,has been considered to maintain the health and treatment of some diseases.Therapeutic pendants can be considered as a kind of external medication use in which therapeutic materials are hung on the body surface.The external use of pendants could have curative effects with their close contact to the body surface.Conclusion:Pendant therapy may probably be considered as a non-invasive and easy-to-use treatment with unnoticeable side effects that can be utilized along with other therapies.

Evolution of a Water Pendant Droplet: Effect of Temperature and Relative Humidity

As part of a better understanding of drying liquids within porous materials, measurements from 293 to 343 K of deionized water surface tension in air as a function of relative humidity are exposed. Experimental work was carried out using the pendant drop method coupled with image analysis within an adapted instrumented climatic chamber. Results show that surface tension linearly decreases when relative humidity increases. Although the effect of humidity is less compared to that of the temperature and even less compared to a surfactant impact, it must not be neglected and values have to be mentioned when dealing with water evaporation. Modifying surface tension also affects the pendant drop shape. The drying kinetics of the pendant drop volume and its outer shell are connected to this change of shape. Steam in the air can be assimilated to a wetting agent, hence a surfactant, and can be used in an environmental-friendly way to ease the drying stage. Indeed, the challenge is to limit the risk of cracking and damaging pieces during this crucial step in material processing.

Synthesis and Structure of a New Bicadmium (Ⅱ) Complex with Macrocyclic Hexaaza Bearing Hydroxyethyl Pendants

A new bicadmium(??) complex [Cd2L](ClO4)2?1.25H2O (C28H35Cd2Cl4N6O13.25) was synthesized and characterized by X-ray diffraction and ES mass spectral analyses. It crystallizes in the triclinic system, space group P1 with a = 15.630(3), b = 15.990(3), c = 16.330(3) ?, α = 89.90(3), β = 68.87(3), γ = 87.94(3)o, V = 3804.1(13) ?3, Mr = 1034.22, Z = 4, F(000) = 2060, Dc = 1.806 g/cm3, T = 293(2) K, μ = 1.468 mm-1 and λ = 0.71073 ?. The structure was refined to R = 0.0779 and wR = 0.1960 for 7034 observed reflections with I > 2σ(I).

Optimization of Serial Port of General Flex Pendant for Industrial Robot

In order to further improve the serial ports communication mode of the general Flex Pendant for industrial robot,a multiple serial communication mode is put forward. It is used to meet the stability of data transmission,transmission distance,transmission speed,anti-interference and cost-effective. Using ADUM1201 single direction dual channel digital isolator,two pieces of MAX13487 E and a piece of MAX3232 chip to transmit data and files, and to control chip’ s electrical level. Selecting the RS232, RS422 and RS485 communication mode,the serial ports of the general Flex Pendant of industrial robot is optimized.

EXCIPLEX FORMATION OF A POLYESTER WITH A TEREPHTHALATE MAIN CHAIN HAVING A PENDANT N, N-DIMETHYLAMINO GROUP

The fluorescence behaviours of a new polymer poly [oxy-2 (4-N, N-dimethylaminobenzyl) propane-1 , 3-diyloxy-terephthaloyl] (Ⅰ) in solution were studied. Inter-and intra -molecular exciplex is formed between the singlet excited state of N, N- dimethylanilino group (abbreviated to DMA) and the ground state of terephthalate group (abbreviated to TP). The intensity ratio of the long wavelength exciplex fluorescence to the short wavelength emission of DMA group is used as an index for the inter-and intra-molecular interaction of chromophores. The results are compared with model polymer polyoxy-2-(4-N ,N-dimethylaminobenzyl) propanc-1 , 3-diyloxyadipoyl (Ⅱ), model monomer compound 4-N, N-dimethylaminobenzylmethyl terephthalate(Ⅲ) and diethyl 2-( 4-N, N-dimethylaminobenzyl) malonate (Ⅳ). Polymer association derived by electron donor and acceptor interaction (EDA) is further verified as a key role in the interpolymer exciplex formation . The fluorescence decay time of (Ⅰ) and monomer (Ⅲ) are measured in solutions.

SYNTHESIS， COMPLEXATION PROPERTIES AND CRYSTAL STRUCTURE OF NEW DIOXOCYCLAM BEARING 8－METHYL QUINOLINE AS FUNCTIONAL PENDANT（S）

Two new dioxo tetraamine ligands L1 and L2 have been synthesized and characterized by 1H NMR, IR, MS and elemental analysis,Their protonation eonstants and complex formation constants with Cu2+have been determined by potentiometric titration, The X-ray crystal structure of L1 has been determined.

Huabao Electrical Appliances Factory——World's Biggest Pendant Lamp Factory

Started with 100 workers and staff, the Guangdong based Huabao Electrical Appliances Factory has now made 500 products in 50 categories. It boasts 2,000 staff and fixed assets worth RMB80 million. In 1988, the factory was cited as an advanced enterprise in earning foreign exchange among light industries nationwide, by the Ministry of Light Industry; and Huabao electrical appliances were named high quality products in an appraisal sponsored by the Ministry of Light Industry.

Preparation and Characterization of Maltose-Pendant Polymer/Mica Nanocomposites and Their Application to Oxygen Gas Barrier Films

Maltose-pendant polymer/mica nanocomposites were prepared by a solution intercalation method. For organic composite part, 1) maltose-pendant polymer (homopolymer) and 2) the copolymer of maltose-pendant monomer and a small amount of N,N-Dimethylamino propylacrylamide, methyl chloride quartenary were used. The morphological studies (XRD and FE-SEM) revealed that the hybrid of maltose-pendant polymer was a conventional phase separated composite. On the other hand, the hybrid using the copolymer exhibited exfoliated structure. Both the conventional composite of maltose-pendant polymer and the nanocomposite of copolymer were applied to a coating material for oxygen gas barrier layer on a nylon-6 film, and oxygen transmission rates of the films were evaluated. Maltose-pendant polymer had a good oxygen barrier property under dry condition, and the barrier property under wet condition was improved by the hybridization with mica. In contrast, the barrier property of copolymer was slightly inferior to that of maltosependant polymer. However, under dry condition, it can be seen that the nanocomposite of copolymer improves the barrier property more effectively than the case of conventional composite of maltose-pendant polymer.

Syntheses,Spectral Characterization of the Nickel(Ⅱ) Complexes of Macrocyclic Dioxotetraamine and the Effect of the Functional Pendant Arms on their Properties

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基于重叠网格的皮蛋喷淋涂膜仿真研究

为了加深对皮蛋喷淋涂膜工艺的认识,使用Fluent软件中重叠网格耦合VOF模型开展两相流研究,获得皮蛋不同摆放姿势下的液膜润湿比,并以膜厚变化指数为响应值,结合Box-Behnken试验筛选出悬垂液滴去除时最优吸管参数与工作压力,结果显示:尖端朝下摆放的皮蛋经过喷淋后液膜润湿比为1,而钝端朝下摆放的皮蛋经过喷淋后液膜润湿比仅为0.836,筛选出最优吸管参数组合为间距14.50 mm、直径12.09 mm、工作压力6.97 kPa、膜厚变化指数预测值为0.636。在最优吸管参数组合下进行仿真试验,并利用气吸装置开展悬垂液滴去除试验,试验结果显示,膜厚变化指数仿真值与预测值的相对误差为1.73%,膜厚变化指数的实际值与预测值的相对误差为7.55%,与仿真值的相对误差为9.12%。结果表明本研究的耦合模型可用于皮蛋喷淋涂膜仿真试验。

Synthesis and Characterization of Poly（ε-caprolactone-co-δ- valerolactone） with Pendant Carboxylic Functional Groups

In this paper, aliphatic polyesters functionalized with pendant carboxylic groups were synthesized via several steps. Firstly, substituted cyclic ketone, 2-（benzyloxycarbonyl methyl）cyclopentanone （BCP） was prepared through the reaction of enamine with benzyl-2-bromoacetate, and subsequently converted into the relevant functionalized 6-valerolactone derivative, 5-（benzyloxy carbonylmethyl）-δ-valerolaetone （BVL） by the Baeyer-Villiger oxidation. Secondly, the ring-opening polymerization of BVL with ε-caprolactone was carried out in bulk using stannous octoate as the catalyst to produce poly（ε-caprolactone-co-δ-valerolactone） bearing the benzyl-protected carboxyl functional groups [P（CL-co-BVL）]. Finally, the benzyl-protecting groups of P（CL-co-BVL） were effectively removed by H2 using Pd/C as the catalyst to obtain poly（ε-caprolactone-co-δ-valerolactone） bearing pendant carboxylic acids [P（CL-co-CVL）]. The structure and the properties of the polymer have been studied by Nuclear Magnetic Resonance （NMR）, Fourier Infrared Spectroscopy （FT-IR） and Differential Scan Calorimetry （DSC） etc. The NMR and FT-IR results confirmed the polymer structure, and the 13C NMR spectra have clearly interpreted the sequence of ε-caprolactone and 5-（benzyloxycarbonylmethyl）-δ-valerolactone in the copolymer. When the benzyl-protecting groups were removed, the aliphatic polyesters bearing carboxylic groups were obtained. Moreover, the hydrophilicity of the polymer was improved. Thus, poly（ε-caprolactone-co-δ-valerolactone） might have great potential in biomedical fields.

Effects of dynamic deformation of pendant water drops on the electric field between hollow porcelain insulator sheds under extreme rainfall

Hollow porcelain insulators in substations are frequently confronted with rain flashovers under extreme rainfall.This study aims to investigate the spatial and temporal variation of electric fields between hollow porcelain insulator sheds affected by dynamic deformation of pendant water drops and effects of the dimensionless number of fluids,the Weber number(We)and the electric Bond number(BoE),on it for influencing factors'analysis.Flow‐electric field coupling simulations were carried out to compute the magnitude and the position of AC electric fields between the sheds.The results show that the maximum electric field at a point in time(Etmax)increases significantly after the breakup of the pendant water drop,and its position alters accordingly.For low We and BoE,the global maximum electric field(Egmax)increases with increasing We and BoE,respectively.It is much closer to the adjacent sheds and occurs later than Etmax at the breakup of the pendant water drop(Ebmax).By contrast,Egmax decreases in different degrees at high We and BoE,respectively.There is little difference between Egmax and Ebmax in the position and the occurring time.The influence mechanism on the maximum electric field and discharges and the relationship between discharges induced by the pendant water drop and rain flashover are discussed.

基于有限元分析的医用桥梁式吊塔轻量化设计研究

目的:为解决医用吊塔由于质量与体积过大所带来的安全风险和安装维护困难的问题,基于有限元分析对医用桥梁式吊塔进行轻量化设计。方法:采用Altair HyperWorks CAE平台建立医用桥梁式吊塔悬梁的有限元模型,在刚度和强度计算结果的基础上对其进行拓扑优化及尺寸优化。比较优化前后医用桥梁式吊塔悬梁端部的变形角度、最大应力及质量,并完成优化方案验证。结果:优化后的医用桥梁式吊塔悬梁模型相比原模型变形角度仅增加了0.05°,最大应力仅上升了9.1%,但质量减轻了20.2%。在4倍承载条件下优化后的医用桥梁式吊塔悬梁最大应力为240 MPa,承载性能满足相关要求。结论:该研究在保证医用桥梁式吊塔悬梁的刚度和强度性能满足要求的同时,实现了悬梁的轻量化设计。

吊钟花观赏价值与培育要点

吊钟花属植物作为杜鹃花科植物重要的代表之一,是一种具有很高观赏价值的重要植物资源。本文简要阐述了其观赏价值,然后重点从扦插、土壤要求、光照条件、温度条件以及浇水方法等方面论述了吊钟花的培育要点,并且对吊钟花常见的病虫害以及防治措施进行了探讨,以期为吊钟花培育提供相关技术参考。

光纤泡沫铝板施工技术研究与应用

光纤泡沫铝板属于新型材料,凭借自重轻、强度高、隔声效果好、耐火耐高温、易加工切割开孔等优势,受到广泛关注。目前光纤泡沫铝板施工尚无操作规程和技术标准,常规的安装方式难以满足需求。本技术通过采用镶嵌安装工艺,有效解决光纤泡沫铝板安装的难题,保证了光纤泡沫铝板安装的稳定可靠性。

高压热固化木纤维板幕墙施工技术在新机场急救中心项目的应用

高压热固化木纤维板是一种高科技绿色环保的建筑物墙面装饰材料,具有抗撞击、抗紫外线、抗风化、、防潮湿、防辐射等卓越特性,适用于幕墙装饰。目前高压热固化木纤维板幕墙的加工和安装仍存在诸多难题,包括开放性幕墙防水、板材变形、板材加工裁切效率低、现场安装困难等。本技术通过对板材定尺下料、加工裁切、现场安装全过程进行改进。从面层板定尺加工、安装构造等多个维度优化,提高了下料加工效率,缩短加工周期,增强抗变形性能,降低施工难度,取得了较为理想的施工效果。

Sixteen-joint Jade Pendant

This light green jade pendant, measuring 48 cm, was unearthed at the Zenghouyi tomb. It was made from five pieces of jade which were carved into ornamental shapes, including a dragon, a phoenix, a bi(a round flat piece of jade with a hole in the center), and rings. Three slip-hoops are fashioned into an ellipse. A single jade nail connects the pieces to a pendant which can be folded or taken apart. Some designs often were carved either on one side or both sides of these ornaments. On this piece are found 37 styles of dragons, seven kinds of phoenixes and ten snakes, done by drill-carving, carving on the surface or in intagolio. Also on the pendant is a picture titled "The Claws of the Phoenixes Grasp the Snakes."

Measurement of contact angle between stainless steel surface and carbon dioxide by pendant drop method

To measure contact angle between CO2 and solid surface, in this study a visual high-pressure vessel has been developed, with a corresponding well-controlled constant temperature system. Pendant drop method is applied to the investigation of the contact angles of CO2 on a stainless steel surface in its own vapor. The image of the pendant drop is recorded by a camera, and a B-Snake method is used to analyze the contour and the contact angle of the droplet. The experimental results have provided a set of well tested data, which show that CO2 has good infiltration into stainless steel surface and the de- veloped method can be used as a standard testing one for measuring the contact angle between high-pressure liquid and solid surface.

磺化联苯侧基双二氮杂萘酮聚芳醚酮膜的制备

以1′,4-二(1,1′-联苯基)-6,6′-双二氮杂萘-1,4′-二酮、4-(4-羟苯基)-2,3-二氮杂萘-1-酮和4,4′-二氟二苯酮进行共聚合,经磺化改性制备了新型磺化联苯侧基双二氮杂萘酮聚醚酮(SPDPEKs).通过核磁共振波谱、红外光谱对SPDPEKs的结构进行表征.采用溶液浇铸法制备了SPDPEKs质子交换膜,对其离子交换容量(IEC)、溶胀率、质子传导率以及耐氧化性进行了测试.结果表明:SPDPEK质子交换膜的IEC介于0.75~1.77 mmol/g之间,在80℃下的吸水率介于9.2%~30.2%之间,溶胀率低于10%;SPDPEKs膜在95℃的质子传导率介于53.3~146.2 mS/cm,在80℃芬顿试剂中的破裂时间在3.4~5.3 h之间,溶解时间则介于12~36 h.SPDPEKs膜表现出良好的尺寸稳定性、质子传导性和耐氧化稳定性.

近30年中医药防治功能性肛门直肠痛研究文献可视化分析

目的分析国内中医药防治功能性肛门直肠痛(FARP)相关文献,了解该研究领域的现状、热点及趋势,为中医药防治FARP提供研究方向。方法检索并筛选中国知识资源总库(CNKI)、中文科技期刊数据库(VIP)、中国学术期刊数据库(万方数据)、中国生物医学文献数据库(CBM)1992年1月1日-2022年4月30日收录的中医药防治FARP的相关文献。采用EndNoteX9软件去重,采用VOSviewer1.6.18和CiteSpace5.3R4对发文量、作者、机构、关键词进行可视化分析。结果共纳入文献594篇。核心作者104位,其中王业皇发文量最高(9篇),形成了以陆金根、王业皇、丁义江、王振宜、任伟涛、黄德铨等为代表的多个研究团队。南京中医药大学是该领域核心机构。频次较高的关键词有肛门坠胀、混合痔、中药熏洗、临床研究等。研究热点经聚类分析,形成了肛门坠胀、中药熏洗、肛缘水肿、子宫大小、肛门坠痛、临床疗效、中医药治疗、中药坐浴、临床研究、里急后重、中药灌肠11大聚类。关键词时间线分析和突现分析显示,生物反馈、湿热下注、中药坐浴、生活质量、电针可能是今后中医药防治FARP领域研究热点。结论近30年中医药防治FARP研究涉及的热点领域不断扩大,热度持续上升,研究主要关注发病机制、疾病诊断及多种疗法结合的临床治疗。