Basic Characteristics of an Appropriate Waste Fillers for Solvent Free and Water-Borne Industrial Polymer Floors and Their Utilization

Recently the manufacture of epoxy coating and flooring materials begun to be under strong pressure to use more environmentally friendly raw materials in its composition.First tendency to reduce of solvents and diluents contained in the materials appeared at the end of 90´s.This situation was supported by the Council of Europe in 2004 to reduce VOC emissions to zero till 2020.Solvent materials were thus largely replaced by solvent free materials from which the volatile substances are not released into the air.But pressure continued to increase,and over the past decade began to take centre stage water-based epoxy.On the Czech market solvent based material is still occasionally used,but predominant are solvent free materials.There are no commonly used materials containing wastes as fillers in new water-borne and solvent-free epoxy materials.Characteristics identification of the waste material as a potential filler is a set of properties that determine the limits of secondary raw materials or waste as a filler.This paper describes the basic characteristics which must be selected to meet the requirements,to affect negatively the workability,sedimentation,properties and behavior of the final floor system.Some materials must comply with special requirements,such as resistance to chemicals,etc.Next part of paper talks about utilization of polymer floors and their mechanical properties.

Further Analysis of Machine Tool Dimensional Accuracy and Thermal Stability under Varying Floor Temperature

Machining is as old as humanity, and changes in temperature in both the machine’s internal and external environments can be of great concern as they affect the machine’s thermal stability and, thus, the machine’s dimensional accuracy. This paper is a continuation of our earlier work, which aimed to analyze the effect of the internal temperature of a machine tool as the machine is put into operation and vary the external temperature, the machine floor temperature. Some experiments are carried out under controlled conditions to study how machine tool components get heated up and how this heating up affects the machine’s accuracy due to thermally induced deviations. Additionally, another angle is added by varying the machine floor temperature. The parameters mentioned above are explored in line with the overall thermal stability of the machine tool and its dimensional accuracy. A Robodrill CNC machine tool is used. The CNC was first soaked with thermal energy by gradually raising the machine floor temperature to a certain level before putting the machine in operation. The machine was monitored, and analytical methods were deplored to evaluate thermal stability. Secondly, the machine was run idle for some time under raised floor temperature before it was put into operation. Data was also collected and analyzed. It is observed that machine thermal stability can be achieved in several ways depending on how the above parameters are joggled. This paper, in conclusion, reinforces the idea of machine tool warm-up process in conjunction with a carefully analyzed and established machine floor temperature variation for the approximation of the machine tool’s thermally stability to map the long-time behavior of the machine tool.

Minimally invasive techniques for lateral maxillary sinus floor elevation: small lateral window and one-stage surgery—a 2–5-year retrospective study

This study aimed to introduce a minimally invasive technique for maxillary sinus floor elevation using the lateral approach(lSFE)and to determine the factors that influence the stability of the grafted area in the sinus cavity.Thirty patients(30 implants)treated with lSFE using minimally invasive techniques from 2015 to 2019 were included in the study.Five aspects of the implant(central,mesial,distal,buccal,and palatal bone heights[BHs])were measured using cone-beam computed tomography(CBCT)before implant surgery,immediately after surgery(T0),6 months after surgery(T1),and at the last follow-up visit(T2).Patients’characteristics were collected.A small bone window(height,(4.40±0.74)mm;length,(6.26±1.03)mm)was prepared.No implant failed during the follow-up period(3.67±1.75)years.Three of the 30 implants exhibited perforations.Changes in BH of the five aspects of implants showed strong correlations with each other and BH decreased dramatically before second-stage surgery.Residual bone height(RBH)did not significantly influence BH changes,whereas smoking status and type of bone graft materials were the potentially influential factors.During the approximate three-year observation period,lSFE with a minimally invasive technique demonstrated high implant survival rate and limited bone reduction in grafted area.In conclusion,lSFE using minimally invasive techniques was a viable treatment option.Patients who were nonsmokers and whose sinus cavity was filled with deproteinized bovine bone mineral(DBBM)had significantly limited bone resorption in grafted area.

Maxillary sinus floor augmentation: a review of current evidence on anatomical factors and a decision tree

Maxillary sinus floor augmentation using lateral window and crestal technique is considered as predictable methods to increase the residual bone height;however,this surgery is commonly complicated by Schneiderian membrane perforation,which is closely related to anatomical factors.This article aimed to assess anatomical factors on successful augmentation procedures.After review of the current evidence on sinus augmentation techniques,anatomical factors related to the stretching potential of Schneiderian membrane were assessed and a decision tree for the rational choice of surgical approaches was proposed.Schneiderian membrane perforation might occur when local tension exceeds its stretching potential,which is closely related to anatomical variations of the maxillary sinus.Choice of a surgical approach and clinical outcomes are influenced by the stretching potential of Schneiderian membrane.In addition to the residual bone height,clinicians should also consider the stretching potential affected by the membrane health condition,the contours of the maxillary sinus,and the presence of antral septa when evaluating the choice of surgical approaches and clinical outcomes.

Reporting Children’s Development below the Test Floor: Looking Back and Forth to Describe Individual Strengths and Needs

The test floor effects seen in standardised tests lead to a standardised score of 1 or less with a flat profile that hides a child’s individual strengths and needs. The Griffiths III community of practitioners requested advice on the reporting of children’s development below the floor of the test, so that individual strengths and needs can be described. This paper reports the third phase of research following an earlier Scoping Review and a wider literature review. To confirm quality control, Phase 3 was conducted in a retrospective manner using the same methodology as the earlier phases but in a reverse direction. Peer reviewer comments and key elements from the Scoping Review and keywords from the publications were tabulated. Data analysis included a change of perspective to that of the child and their individual rights with respect to the literature themes already described in Phase 2. These confirmed that there is little specific guidance in the literature, but that computational advances for homogeneous populations and especially disaggregated data offer some solutions. A greater balance between broad biopsychosocial models and standardised models of assessment should be sought by practitioners together with the use of disaggregated data to highlight issues that pertain to individual subsets of results. This will ensure that the child’s right for their individual strengths and needs to be described together with a plan for management, may be met.

Experimental Mode and Vibration Comfort Analysis of High-Rise Glulam Building Floor Structure

In order to better meet the objective requirements of the use safety of the high-rise glulam building floor structure and the living comfort of the residents,the transient excitation,environmental excitation and frequency spectrum identification methods were used to carry out experimental modal test in-site on the three rooms numbered A,B and C of the same glulam structural building.The three rooms have different functions,different floor sizes and different floor supporting structures.The research results have shown that the first-order bending frequency of the floor structure of Room A is 27.50 Hz,the transverse second-order bending frequency is 34.75 Hz,the longitudinal second-order bending frequency is 53.25 Hz,and the first-order torsional frequency is 56.25 Hz.The reinforced wooden beam at the bottom of the floor of Room A increases the transverse stiffness of the floor structure,but does not offset the anisotropy caused by the longitudinally installed glulam floors.The fundamental frequency values of the floor structures of the three rooms numbered A,B,and C are 27.5,13 and 18 Hz,respectively.This has a relatively high innovation and reference significance for integrating the theory of structural dynamic characteristics with the dynamic testing technology,improving the design level of high-rise glulam structure buildings,and improving the living comfort of residents.

Effects of High Risk Pregnancy Factors on Pelvic Floor Muscle Weakness and Changes of PG, ACTH and CRP

Objective: To investigate the effects of different delivery modes on perinatal pelvic floor muscle strength, PG, ACTH and CRP of high-risk pregnant women. Methods: 380 high-risk pregnant women who gave birth in our hospital from March 2021 to February 2022 were selected as subjects, including 100 vaginal natural delivery, 156 forceps assisted delivery and 124 cesarean section. Pelvic floor pressure, PG, ACTH, CRP, IL-6, TNF-α and IL-4, IL-10 levels were evaluated and compared. The perinatal occurrence of pelvic floor functional disease (PFD) in high-risk pregnant women in each group was analyzed and evaluated. Results: There were statistical differences in the amount of postpartum blood loss (P 0.0001, F = 99.01), postpartum blood loss 24 h (P = 0.0004, F = 19.54) and hospital stay (P 0.0001, F = 70.81) among the three groups of high-risk women in natural vaginal delivery, forceps delivery and cesarean section. In addition, there were 72, 134 and 70 cases of abnormal pelvic floor fatigue in natural vaginal delivery, forceps assisted delivery and cesarean section (P 0.0001, χ2 = 30.16). There were 36, 79 and 21 cases of muscle injury, respectively (P 0.0001, χ2 = 34.16). There were 49, 98 and 43 cases of dysmuscular contraction, respectively (P 0.0001, χ2 = 21.94). There were 65, 120 and 41 cases with vaginal dynamic pressure 80 cm H2O (P 0.0001, χ2 = 56.86), respectively. The.

Two Cases of Epidermoid Cyst of the Buccal Floor Simulating: A Tumour of the Submandibular Gland

Dermoid cyst of the oral floor is rare benign tumour, who having three histological aspects: dermoid, teratoid and epidermoid. This one is characterized by the presence of a squamous stratified epithelium with cutaneous remnants. It may occur in any part of the body, however their frequency in the ENT sphere is relatively scarce. Seven per cent (7%) only of epidermoid cysts occur in the cervico-facial area, 1.6% of which locate at the floor level. When they are located submandibular, they can pose diagnostic difficulties and look like a tumour of the submaxillary gland. We report two cases of epidermoid cyst of the floor. Both patients suffered from swelling of the submandibular gland. Magnetic Resonance Imaging was not requested due to lack of resources. However, surgery allowed in both cases the excision of a cyst next to a normal submandibular gland. Patients did well post operatively.

经会阴盆底超声参数对盆底功能障碍性疾病的监测效果及对盆底康复治疗的指导价值

目的探究经会阴盆底超声参数对盆底功能障碍性疾病(PFD)的监测效果及对盆底康复治疗的指导价值。方法选取2021年1月至2022年6月江苏省连云港市妇幼保健院119例产后42 d发现的PFD患者作为研究对象,根据分娩情况分为初产妇组(n=59)和经产妇组(n=60)。比较两组及不同分娩方式患者盆底超声参数,所有患者均行盆底康复治疗,治疗1个月后统计疗效,分析各参数预测疗效的价值。结果经产妇组尿道旋转角、膀胱后角、膀胱移动度、肛提肌裂孔面积(最大Valsalva动作)均高于初产妇组(P<0.05);两组中自然分娩孕妇尿道旋转角、膀胱后角、膀胱移动度、肛提肌裂孔面积(最大Valsalva动作)均高于剖宫产孕妇(P<0.05);疗效不佳的PFD患者治疗前的尿道旋转角、膀胱后角、膀胱移动度、肛提肌裂孔面积(最大Valsalva动作)均高于疗效良好的患者(P<0.05)。治疗前尿道旋转角、膀胱后角、膀胱移动度、肛提肌裂孔面积(最大Valsalva动作)预测PFD患者盆底康复疗效不佳的曲线下面积(AUC)分别为0.821、0.771、0.732、0.703。结论经会阴盆底超声参数可监测PFD病情,且能为临床预测盆底康复疗效、判断疾病转归提供参考。

RPG整体姿态康复技术联合盆底电刺激、手法按摩治疗MFPP的临床疗效

【目的】探讨RPG整体姿态康复技术联合盆底电刺激、手法按摩治疗肌筋膜源性慢性盆腔痛(MFPP)的临床疗效。【方法】选取2020年3月至2023年12月在本院盆底诊治中心就诊的80例MFPP的女性患者,采用随机数字表法分为观察组和对照组,每组40例。两组均接受电刺激治疗、手法按摩及盆底肌肉锻炼治疗1个疗程,观察组同时给予RPG整体姿态康复训练。比较两组治疗后有效率及治疗前后盆腔肌筋膜疼痛程度、异常体态改善情况。【结果】观察组治疗有效率为87.50%,与对照组的80.00%比较,差异无统计学意义(P>0.05)。盆腔左侧、盆腔右侧、闭孔内肌、梨状肌、混合性等5个部位疼痛比较,差异均无统计学意义(P>0.05)。治疗后,两组中度、重度疼痛患者占比均较治疗前明显减少(P<0.05),且观察组无疼痛患者占比显著高于对照组(P<0.05)。观察组患者异常体态改善有效率为57.33%,与对照组患者的37.50%比较,差异无统计学意义(P>0.05)。【结论】RPG整体姿态康复技术联合盆底电刺激、手法按摩可显著减轻MFPP患者的疼痛程度,是治疗MFPP安全、有效的方法,长期疗效有待进一步观察。

综合干预联合盆底康复治疗对围绝经期女性盆底功能障碍性疾病的影响

目的:探讨综合干预联合盆底康复治疗对围绝经期女性盆底功能障碍性疾病(PFD)的影响。方法:选取2021年10月—2022年12月贵州航天医院收治的160例围绝经期PFD患者作为研究对象,以随机数字表法分为研究组与对照组,各80例。对照组实施盆底肌康复治疗,研究组在对照组基础上进行综合干预。比较两组干预效果。结果:研究组总有效率高于对照组,差异有统计学意义(P=0.043)。干预6、12周后,两组Ⅰ、Ⅱ类肌纤维疲劳度和盆底功能评分逐渐降低,且研究组低于对照组,两组Ⅰ、Ⅱ类肌纤维电压值逐渐升高,且研究组高于对照组,差异有统计学意义(P<0.05)。结论:综合干预联合盆底康复治疗对围绝经期女性PFD的干预效果显著,可改善盆底肌疲劳度、电压值、盆底功能。

盆底超声评估妊娠、分娩和盆底肌锻炼对产妇盆底功能的影响

目的探讨盆底超声评估妊娠、分娩和盆底肌锻炼对产妇盆底功能的影响。方法选择2019年1月至2023年1月我院收治的104例产妇,根据干预方式不同分为对照组(n=50)和研究组(n=54)。对照组给予常规妊娠指导和护理,研究组则在妊娠28周后加用盆底肌锻炼。比较两组产后8周的盆底功能和盆底超声检查结果。结果研究组盆底肌力等级显著优于对照组,压力性尿失禁发生率显著低于对照组(P<0.05)。研究组CD、LHD-d、LHLR-d、RAD、BND显著低于对照组(P<0.05)。结论盆底超声可评估妊娠、分娩和盆底肌锻炼产妇的盆底功能;盆底肌锻炼能够显著改善产妇的盆底功能,减少盆腔结构变化,降低压力性尿失禁发生率。

深部矿井软底回采巷道底鼓机理及防治研究

针对山阳煤矿软底回采巷道严重底鼓的难题,采用理论分析、数值模拟和现场应用的方法,基于塑性理论建立了巷道底板岩体滑移线底鼓力学模型。研究表明,巷道底板破坏岩体主要分为3个区,分别为主动极限区、过渡区和被动极限区,推导了巷道底板岩体的最大破坏深度,提出了锚索+卸压槽联合控制底鼓的方法。采用数值模拟的方法验证了联合控制方案的可行性,现场应用效果表明该方法能够有效控制软底巷道底鼓,为相似地质条件底鼓问题的研究提供了一定的帮助。

新疆克州地区学校建筑供暖系统设计研究

研究了新疆克州地区某中学供暖系统设计的思路和流程,包括热源的选择、供暖系统设计,换热站设计等,深入探讨和分析了调试过程中出现的问题,对设计和施工阶段需要关注的设计调研、施工规范等关键环节进行了总结与反思,并提出了解决方案。

二维盆底超声评估盆膈裂孔前后径与盆腔器官脱垂的关系

目的研究盆底正中矢状切面盆膈裂孔前后径(AP)与盆腔器官脱垂(POP)程度的关系。资料与方法回顾性收集2017年7月—2019年5月中南大学湘雅二医院262例女性的临床资料和经会阴盆底超声(TPUS)数据。在盆底正中矢状切面于最大Valsalva动作下测量AP,通过TPUS和盆腔器官脱垂量化系统(POP-Q)测定POP程度,并分析AP与POP程度的关系,采用受试者工作特征曲线分析AP对POP程度的预测能力。结果共获得237例有效数据,其中POP-Q 0度POP 51例(21.51%),I度57例(24.05%),II度49例(20.67%),III度44例(18.56%),IV度36例(15.18%)。AP为37.10~97.90 mm,平均(61.33±10.71)mm。在TPUS或POP-Q系统诊断的不同程度POP中,AP测值差异均有统计学意义(F=52.00、58.18,P均<0.01)。以AP=6.0 cm为截断值,预测TPUS明显POP的敏感度为81.0%,特异度为75.5%;预测POP-Q II度以上POP的敏感度为74.5%,特异度为76.0%。AP与POP严重程度呈正相关,AP<6.0 cm与0~I度POP相关,6.0 cm≤AP<6.5 cm与II度POP相关,6.5 cm≤AP<7.0 cm与II~III度POP相关,7.0 cm≤AP与IV度POP相关(r=0.61、0.47、0.56、0.41,P均<0.05)。结论AP≥6.0 cm提示盆膈裂孔扩张,可能发生POP;AP越大,器官脱垂程度越严重。

国家标准GB/T 18103—2022《实木复合地板》解读

国家标准GB/T 18103—2022《实木复合地板》已于2022年12月30发布,2023年7月1日实施。简述标准修订过程、修订原则和内容变化,通过对标准术语和定义、分类、要求、检验方法、检验规则以及标识、包装、运输和贮存等的解读,引导标准的正确理解和实施应用。

盆底肌训练在直肠癌患者保肛术后低位前切除综合征中的应用研究进展

盆底肌训练在直肠癌患者低位前切除综合征的预防和治疗中取得了初步效果。文章对盆底肌训练在直肠癌患者保肛术后低位前切除综合征中应用的现状及影响因素和现有研究的不足及展望等进行综述,以期为直肠癌患者盆底肌训练方案的实施提供实践参考。

低频神经肌肉刺激治疗产后盆底肌力减退的效果分析

目的:分析低频神经肌肉刺激治疗产后盆底肌力减退的效果。方法:选取2021年1月—2022年1月南方医科大学南方医院收治的产后盆底肌力减退患者300例作为研究对象,采用随机数字表法分为对照组和观察组,各150例。对照组实施常规产后盆底康复训练,观察组在对照组基础上实施低频神经肌肉刺激治疗。比较两组临床疗效、盆底肌力、漏尿情况、盆底功能。结果:观察组治疗总有效率高于对照组,差异有统计学意义(P=0.004)。观察组盆底肌力优于对照组,差异有统计学意义(P<0.001)。干预后,两组漏尿次数、漏尿量评分低于干预前,且观察组低于对照组,差异有统计学意义(P<0.05)。干预后,两组盆底功能评分低于干预前,且观察组低于对照组,差异有统计学意义(P<0.05)。结论:低频神经肌肉刺激治疗产后盆底肌力减退的效果显著,可改善漏尿情况,提高盆底肌力,改善盆底功能。

女性盆底功能障碍性疾病诊治流程及物理治疗康复临床应用——康复流程、原则及智能诊疗

女性盆底功能障碍性疾病(FPFD)发生机制复杂,专科的临床医师往往无法覆盖妇产、泌尿、肛肠、影像等各专科全面的医学专业信息,限制了对于该疾病的系统、全面诊治。FPFD的治疗需要遵循康复流程,制定个性化物理治疗干预措施,同时结合其他方式制定综合性治疗策略。人工智能在盆底领域的应用,不仅可以提高医生诊断效率,还可以为综合治疗方案的制定提供参考和依据,实现智能诊疗与精准医疗。本文从FPFD康复流程出发,分析康复原则及内容,探究人工智能在FPFD诊疗中的应用现状,旨在为实现盆底疾病智能诊疗提供参考。

补中益气汤联合盆底康复治疗产后盆底功能障碍性疾病的效果

目的探讨中西医结合治疗产后女性盆底功能障碍性疾病(PFD)的效果。方法选取100例产后PFD患者,所有产妇均为单胎妊娠、初产妇以及足月分娩,随机分为试验组50例和对照组50例。对照组进行盆底电刺激+生物反馈的盆底康复治疗,每周2次,每次约30 min,10次为一疗程,连续治疗1个疗程。试验组在对照组的基础上加用补中益气汤加味治疗,连续治疗1个月为一疗程,共治疗3个疗程。比较2组患者治疗后盆底肌纤维肌力及有效率、盆腔脏器脱垂以及压力性尿失禁的情况。结果治疗后试验组盆底肌纤维肌力及有效率均明显高于对照组,试验组盆腔脏器脱垂和压力性尿失禁发生率明显低于对照组(均P<0.05)。结论补中益气汤联合盆底康复治疗可显著改善产后PFD患者盆底肌纤维肌力、盆腔器官脱垂及压力性尿失禁情况。