The Relation between the Preferred Chewing Side and Occlusal Force Measured by T-Scan III System

Occlusal force has the main role in determining the teeth health in general and determining the chewing, muscle and TMJ function. The objective of this study was to find if there was any relation between the preferred chewing side and the force, measured by T-scan III system. The total number of 90 (46 female and 44 male) dental students was included in this study. They were asked whether their preferred chewing side was right, left or both. Afterwards, the occlusal forces in habitual occlusion, using T-Scan III Electronic device (IP-CO position mode, MA-mode, MA sensitivity setting) were measured. The data were presented as Mean ± SD. Spearman correlation was used to find the correlation between the occlusal force and chewing side. Differences in P 0.05) and the right side (r = 0.143, P > 0.05) according to the preferred chewing side. In this study, the relation between the preferred chewing side and occlusal force was found.

共表达分子伴侣蛋白提高III型普鲁兰水解酶在短小芽孢杆菌中的分泌表达及发酵优化

本研究旨在通过共表达分子伴侣蛋白以及优化发酵条件来提高III型普鲁兰水解酶(TK-PUL)在短小芽孢杆菌中的分泌表达水平。通过构建共表达TK-PUL和分子伴侣蛋白的多种重组短小芽孢杆菌,并以胞外酶活为指标对其进行筛选,确定最有利于TK-PUL分泌表达的分子伴侣蛋白及对应的重组短小芽孢杆菌。在此基础上采用单因素实验和响应面法优化重组短小芽孢杆菌的发酵条件。结果表明,共表达分子伴侣蛋白PrsA^(Ba)的重组短小芽孢杆菌的胞外酶活达到98.79 U/mL,提高了0.31倍。该重组短小芽孢杆菌的最佳培养基包括19.65 g/L葡萄糖、21.46 g/L酵母提取物、12.01 g/L MgCl_(2)·6H_(2)O、9.02 g/L脯氨酸、0.01 g/L FeSO4·7H_(2)O、0.01 g/L MnSO4·4H_(2)O、0.001 g/L ZnSO4·7H_(2)O。在发酵温度为35℃、起始发酵pH为7.0的条件下,该重组短小芽孢杆菌于最佳培养基中培养66 h时,其胞外酶活达到192.68 U/mL,提高了1.56倍。本研究通过共表达分子伴侣蛋白和发酵优化实现了TK-PUL在短小芽孢杆菌的高效分泌表达,为TK-PUL的应用提供了基础。

混合牙列期骨性III类错合与骨性I类错合基骨及牙弓对比研究

目的:通过测量混合牙列期骨性III类错合患者与骨性I类错合患者的锥形束计算机断层扫描(Cone beam computed tomography, CBCT),对比分析上下颌牙弓、基骨弓长度与宽度差异及协调性,以期为替牙期骨性III类错合畸形治疗提供参考依据。方法:选择替牙列期骨性III类错合与骨性I类错合各30例,通过Dolphin软件处理收集到的DICOM (Digital Imaging and Communications in Medicine)医学图像数据,行三维重建并测量上下颌牙弓、基骨弓的长度与宽度,计算同一牙段牙弓宽度与基骨弓宽度之间的差值,比较骨性III类与骨性I类错牙合畸形牙弓与基骨弓宽度差值的差异。结果:1) 骨性III类错合组上颌牙弓及基骨弓长度均小于骨性I类错合组,下颌基骨弓长度大于骨性I类错合组,且差异有统计学意义(P 0.05)。2) 骨性III类错合组下颌前段及中段基骨弓宽度大于骨性I类错合组,差异有统计学意义(P 0.05)。3) 骨性III类错合组上颌牙弓与基骨弓宽度的差值均大于骨性I类错合组,下颌牙弓与基骨弓宽度的差值均小于骨性I类错合组,其中上颌后段牙弓宽度与基骨弓宽度差值差异有统计学意义(P < 0.05)。结论:混合牙列期骨性III类错合存在牙弓、基骨弓不调,上颌可扩大基骨弓,下颌可扩大牙弓,以期改善牙弓与基骨弓的协调性。

基于NSGA-III算法求解柔性作业车间调度问题

针对多目标柔性作业车间调度问题,提出一种改进NSGA-Ⅲ算法,以完工时间、机器总负荷、瓶颈机器负荷为目标建立调度模型。首先,为提高种群的多样性,提出一种基于惩罚的边界相交距离定义关联操作中种群个体与参考向量之间的距离;其次,为提高环境选择的计算效率,利用基于惩罚的边界相交距离消除机制来保护个体,降低了个体保护策略的计算成本;最后,为避免种群陷入局部最优,在遗传算子中采用一种改进的变异策略。运用两个评价指标与NSGA-Ⅲ算法进行比较,其收敛性与多样性均由于NSGA-Ⅲ算法。同时在4个Kacem算例上进行测试得出改进NSGA-Ⅲ算法解的质量较高,最后通过实际的生产实例证明改进的NSGA-Ⅲ算法优于或等同于现存在的方法,也证明了该方法在解决多目标柔性作业车间调度难题上的可操作性。

III型胶原蛋白在乳腺癌中的研究进展

乳腺癌(Breast cancer, BC)于2020年在全球新增癌症病例成为了最常见癌症,且发病率逐年升高。胶原蛋白是构成细胞外基质(Extracellular Matrix, ECM)的主要成分,近年来的研究发现III型胶原蛋白(Collagen Type III, COLIII)在乳腺癌的发生、发展过程中发挥重要作用,并对肿瘤微环境(Tumor micro-environment, TME)的维持有重要意义。其中,癌症相关成纤维细胞(Cancer-associated fibroblasts, CAFs)在建立和重塑ECM结构中扮演关键角色,调控肿瘤细胞通过TME入侵的进程。但由于该体系庞大,通过分泌细胞因子和趋化因子与癌细胞相互作用的机制复杂,各成分及其亚型在癌症进展中的角色尚存争议。本文基于TME在乳腺恶性肿瘤中的研究现状以及作为ECM中重要成分的COLIII的性质结构、形态分布,分析COLIII通过改变ECM的机械力与刚度影响乳腺癌行为的机制,同时充分讨论特殊结构、来源的COLIII在微环境中的不同功能及作用方式,评估其应用于癌症治疗的可能性。

清解扶正颗粒方药治疗湿热下注型III型前列腺炎的临床疗效观察和机制探讨

本研究旨在观察清解扶正颗粒方药治疗湿热下注型III型前列腺炎的临床疗效,并探讨其作用机制。方法 选取晋江市中医院泌尿男科门诊的80例湿热下注型III型前列腺炎患者作为研究对象,分为治疗组、对照组,每组40例。治疗组接受清解扶正颗粒方药治疗,对照组接受常规治疗。观察周期为4周,观察指标包括症状评估、前列腺液分析和血清炎症因子分析。结果 治疗组的症状积分指数显著降低,卵磷脂小体数量增加,前列腺液PH值升高,白细胞数目减少,血清炎症因子水平降低,氧化应激产物一氧化氮减少,超氧化物歧化酶等抗氧化物质活性提高,嗜铬粒蛋白A水平降低,肝肾功能无明显差异。治疗组的症状改善程度显著优于对照组和联合组,差异有统计学意义。结论 清解扶正颗粒方药治疗湿热下注型III型前列腺炎具有良好的临床疗效。其作用机制可能包括抗菌、消肿止痛和免疫调节等多种作用。清解扶正颗粒方药具有较低的毒副作用和良好的安全性。进一步的研究和临床实践是必要的,以验证其长期疗效和复发率,并进一步揭示其作用机制。

T-Scan咬合分析系统在口腔治疗中的研究进展

在口腔临床治疗中,咬合功能的测量和分析对治疗发挥不可忽略的作用,而以往测量咬合状态的方法受口腔医师主观影响,准确性不高,无法量化。大量研究显示T-Scan咬合分析系统能精确测量不同咬合状态下的咬合力与时间实时的关系,精确记录咬合接触时间、力量、面积,并动态分析咬合接触情况。在颞颌关节紊乱疾病、正畸正颌、修复和种植、牙周病等多种口腔疾病治疗中,该系统协助临床医生执行精确和有针对性的咬合诊断和调整,并通过可预测和数值测量的治疗结果评价减少咬合并发症发生,获得良好的治疗效果。该系统量化的数据以可视化的方式展示出来,可最大限度地促进医患沟通,更能满足现代口腔疾病临床治疗的需求。本文就T-Scan咬合分析系统的特点及其在口腔临床中的应用进展做一综述。

A modified 3D mean strain energy density criterion for predicting shale mixed-mode I/III fracture toughness

The fracture toughness of rocks is a critical fracturing parameter in geo-energy exploitation playing a significant role in fracture mechanics and hydraulic fracturing.The edge-notched disk bending(ENDB)specimens are employed to measure the entire range of mixed-modeⅠ/Ⅲfracture toughness of Longmaxi shale.To theoretically interpret the fracture mechanisms,this research first introduces the detailed derivations of three established fracture criteria.By distinguishing the volumetric and distortional strain energy densities,an improved three-dimensional mean strain energy density(MSED)criterion is proposed.As the critical volumetric to distortional MSED ratio decreases,the transition from tensiondominated fracture to shear-dominated fracture is observed.Our results indicate that both peak load and applied energy increase significantly with the transition from pure mode I(i.e.,tension)to pure modeⅢ(i.e.,torsion or tearing)since mode-Ⅲcracking happens in a twisted manner and mode-Ⅰcracking occurs in a coplanar manner.The macroscopic fracture signatures are consistent with those of triaxial hydraulic fracturing.The average ratio of pure mode-Ⅲfracture toughness to pure mode-Ⅰfracture toughness is 0.68,indicating that the obtained mode-Ⅲfracture resistance for a tensionbased loading system is apparent rather than true.Compared to the three mainstream fracture criteria,the present fracture criterion exhibits greater competitiveness and can successfully evaluate and predict mixed-modeⅠ/Ⅲfracture toughness of distinct materials and loading methods.

Effect of temperature gradientinduced periodic deformation of CRTS III slab track on dynamic responses of the train-track system

Purpose-Temperature is an important load for a ballastless track.However,little research has been conducted on the dynamic responses when a train travels on a ballastless track under the temperature gradient.The dynamic responses under different temperature gradients of the slab are theoretically investigated in this work.Design/methodology/approach-Considering the moving train,the temperature gradient of the slab,and the gravity of the slab track,a dynamic model for a high-speed train that runs along the CRTS III slab track on subgrade is developed by a nonlinear coupled way in Abaqus.Findings-The results are as follows:(1)The upward transmission of the periodic deformation of the slab causes periodic track irregularity.(2)Because of the geometric constraint of limiting structures,the maximum bending stresses of the slab occur near the end of the slab under positive temperature gradients,but in the middle of the slab under negative temperature gradients.(3)The periodic deformation of the slab can induce periodic changes in the interlayer stiffness and contact status,leading to a large vibration of the slab.Because of the vibration-reduction capacity of the fastener and the larger mass of the concrete base,the accelerations of both the slab and concrete base are far less than the acceleration of the rail.Originality/value-This study reveals the influence mechanism of temperature gradient-induced periodic deformation in the dynamic responses of the train-track system,and it also provides a guide for the safe service of CRTS III slab track.

Value of negative pressure sealing drainage on wound healing of Gustilo IIIB and IIIC open fractures

BACKGROUND Gustilo III fractures have a high incidence and are difficult to treat.Patients often experience difficulty in wound healing.Negative pressure drainage technology can help shorten wound healing time and has positive value in improving patient prognosis.AIM To explore the clinical value of the negative pressure sealing drainage technique in wound healing of Gustilo IIIB and IIIC open fractures.METHODS Eighty patients with Gustilo IIIB and IIIC open fractures with skin and soft tissue injuries who were treated in the Second People’s Hospital of Dalian from March 2019 to December 2021 were selected as the research subjects.They were divided into a study group(n=40,healed with negative pressure closed drainage)and a control group(n=40,healed with conventional dressing changes)according to the variation in the healing they received.The efficacy of the clinical interventions,the variations in the regression indicators(time to wound healing,time to fracture healing,time to hospitalization),and the conversion and healing of bacterial wounds were compared 1-3 mo after the intervention.RESULTS The total effective rate of patients among the study group was 95.00%(38/40),which was notably higher than 75.00%(30/40)among the control group(P<0.05).The wound healing time,fracture healing time,and hospital stay of the patients in the study group was shorter than the control group(P<0.05).After the intervention,the negative bacterial culture at the wound site rate and wound healing rate of the patients among the study group increased compared to the control group(P<0.05).CONCLUSION Negative pressure sealing and drainage technology has a good therapeutic effect on patients with Gustilo IIIB and IIIC open fracture wounds with skin and soft tissue injury.It can notably enhance the wound healing rate and the negative rate of bacteria on the wound surface and help to speed up the recovery process of patients.

Target-induced Trivalent G-quadruplex/hemin DNAzyme for Colorimetric Detection of Hg^(2+) Based on an Exonuclease III Assisted Catalytic Hairpin Assembly

Mercury ion(Hg^(2+)),a highly noxious of heavy metalion,has detrimental effects on the ecological environment and human health.Herein,we have developed an exonuclease III(Exo III)assisted catalytic hairpin assembly formation of a trivalent G-quadruplex/hemin DNAzyme for colorimetric detection of Hg^(2+).A hairpin DNA(Hr)was designed with thymine-Hg^(2+)-thymine pairs that catalyzed by Exo III is prompted to happen upon binding Hg^(2+).A released DNA fragment triggers the catalytic assembly of other three hairpins(H1,H2,and H3)to form many trivalent G-quadruplex/hemin DNA enzymes for signal output.The developed sensor shows a dynamic range from 2 pM to 2μM,with an impressively low detection limit of 0.32 pM for Hg^(2+)detection.Such a sensor also has good selectivity toward Hg^(2+)detection in the presence of other common metal ions.This strategy shows the great potential for visual detection with portable type.

中青年视网膜静脉阻塞与同型半胱氨酸、抗凝血酶III相关研究

目的:研究分析中青年视网膜静脉阻塞(Retinal Vein Occlusion, RVO)患者同型半胱氨酸(Homocysteine, Hcy)及抗凝血酶III (Antithrombin III, AT-III)水平,两者是否作为致病危险因素参与RVO发病。分析视网膜中央静脉阻塞(CRVO)和视网膜分支静脉阻塞(BRVO)危险因素的差异,为治疗和预防该病提供客观依据。方法:1) 所有研究对象选自2021年10月至2023年12月期间就诊于内蒙古自治区人民医院眼科的年龄 P > 0.05)。三组患者之间在Hcy、AT-III、胆固醇(CHOL)、叶酸、维生素B12、D-二聚体(D-D)、纤维蛋白降解产物(FDP)水平差异均有统计学意义(P P P < 0.001)。结论:1) Hcy水平升高和AT-III活性缺乏为中青年CRVO和BRVO的危险因素。2) 相对于BRVO患者,CRVO组中Hcy水平升高和AT-III缺乏的值更为显著。

锑氧化菌Pseudomonas sp.AO-1的分离鉴定及其对Sb(III)的氧化性能

采用抗性筛选法从锡矿山筛选出一株锑氧化菌,并利用分子生物学技术对其进行鉴定;考察了其氧化Sb()Ⅲ的性能和氧化次生矿物的特征.结果表明:锑氧化菌属于假单胞菌属(Pseudomonas),将其命名为Pseudomonas sp.AO-1(简称:AO-1);影响AO-1氧化Sb(Ⅲ)的因素主要有溶液pH值、溶解氧和铁锰氧化物(单质铁、FeCl_(3)和MnO_(2))等;AO-1在好氧和缺氧条件下均能氧化Sb(Ⅲ),好氧氧化Sb(Ⅲ)的米门常数Km和最大氧化速率Vmax值分别为393.05µmol/L和0.271µmol/(L·min),体现了较强的锑氧化性;AO-1和铁锰氧化物的耦合作用能促进Sb(Ⅲ)的氧化,且铁锰氧化物促进AO-1氧化Sb(Ⅲ)的速率依次为:FeCl_(3)>MnO_(2)>单质铁;AO-1和铁锰氧化物耦合氧化Sb(Ⅲ)生成含Sb(Ⅴ)的次生矿物,次生矿物会加速Sb(Ⅲ)的氧化以及影响锑在环境中的迁移转化.菌株AO-1的锑氧化性能良好,对于锑的生物化学转化和土壤微生物修复的应用有重要意义.

重组III型人源化胶原蛋白修护贴敷料联合光子嫩肤对不适症状以及肤质改善的研究

评价重组III型人源化胶原蛋白修护贴敷料在光子嫩肤术后缓解不适症状以及对肤质改善的作用。方法 选择2022年7月—2023年2月于本医院门诊接受光子嫩肤治疗的120例患者,根据1:1简单随机分配原则把患者分为联合组与对照组各60例采用光子嫩肤治疗。联合组给予重组III型人源化胶原蛋白修护贴敷料联合光子嫩肤治疗,对照组用保湿贴敷料代替重组III型人源化胶原蛋白修护贴敷料,同样联合光子嫩肤治疗,两组都治疗观察4周。结果 1、联合组和对照组在术后第2、6、10天的不适症状评分均呈逐渐下降趋势,其中联合组改善程度更为明显。对光子术后即刻与术后第8天评分差值对比,联合组相较对照组具有统计学差异。2、首次进行光子术前,第二次光子术前,第三次光子术前,第12周结束对肤质情况信息录取。联合组和对照组,肤质均有所改善。第12周较光子术前改善对比,联合组改善更为明显,且P<0.05,差异有统计学意义。结论 1、重组III型人源化胶原蛋白修护贴敷料可明显缓解光子术后面部皮肤产生的不适症状,有良好的辅助治疗作用。2、重组III型人源化胶原蛋白修护贴敷料联合光子嫩肤能更好的改善肤质,起到肤质改善的作用。

T-ScanⅢ咬合分析系统在安氏Ⅱ类2分类错[牙合]患者治疗中的应用效果分析

目的本研究将T-ScanⅢ咬合分析系统应用于安氏Ⅱ类2分类错[牙合]患者治疗中,并对其应用效果进行分析。方法选取接受正畸治疗的64例安氏Ⅱ类2分类错[牙合]患者作为研究对象,分别于牙齿排列整齐前后使用T-ScanⅢ咬合分析系统对患者的咬合情况进行分析后依次记录在前伸运动、侧方运动、牙尖交错位等[牙合]位置的咬合时间、[牙合]百分比及接触点等数据并进行对比。结果前伸运动、左侧方咬合运动及右侧方咬合运动的咬合分离时间及咬合接触时间较牙齿排列前均有缩短(P<0.05),左侧方咬合运动工作侧、右侧方咬合运动工作侧及牙尖交错时磨牙区的[牙合]百分比呈上升趋势,其他区域[牙合]百分比呈下降趋势(P<0.05);左侧方咬合运动工作侧、右侧方咬合运动工作侧及牙尖交错时前磨牙区的咬合接触点呈上升趋势,而其余区域的咬合接触点呈下降趋势(P<0.05)。结论采用T-ScanⅢ咬合分析系统作为安氏Ⅱ类2分类错[牙合]患者治疗中测量咬合情况的工具,能够明确知晓通过改善患者此前前牙深覆合、调整尖牙及磨牙的咬合关系,达到改善患者口腔咬合功能的目的。

DFR、抗凝血酶III概况及其在急性肺栓塞中的应用

急性肺栓塞是多种因素共同作用下发生的、可严重危及生命的一种疾病。因其临床表现、体征缺乏特异性,单一检测往往不足以满足诊断需要,误诊率及漏诊率大,病死率高。故在疾病初期采取何种有效的方式进行诊断已成为临床研究热题。D-二聚体为反映纤溶亢进的指标,纤维蛋白原为凝血的指标,DFR作为D-D与Fbg的比值,在一定程度上可以反映纤溶与凝血之间的平衡。抗凝血酶III具有显著的抗凝血作用,其水平下降影响机体抗凝作用,促进血栓形成。

Gartland III型伸直型儿童肱骨髁上骨折的治疗进展

Gartland III型伸直型儿童肱骨髁上骨折是临床上一种较为严重肘部骨折,常合并神经血管损伤,如果治疗不当,会导致严重的并发症,对患儿的身心健康造成不利的影响。由于其骨折端之间骨皮质完全断裂,有明显的侧方和(或)旋转移位,相对不稳定,所以闭合复位相对难度较大。本文将通过查阅近年来关于Gartland III型伸直型儿童肱骨髁上骨折治疗研究进展的相关文献作一综述,旨在加深对该型骨折临床特征的认识并系统阐述其诊治方式的发展现状,为临床决策提供科学依据。

Size matters:analyzing bank profitability and efficiency under the Basel III framework

The latest regulatory framework,which has been introduced globally in the form of Basel III,and its implementation in the legislation of the member states of the Euro-pean Union has generated much interest in the impact of regulation on the efficiency and profitability of banks.This study aims to examine the impact of the introduction of two major regulatory changes(Basel II and Basel III)on bank performance,in terms of bank size and bank-specific and macroeconomic variables.A two-stage empirical anal-ysis was conducted on a sample of 433 European commercial banks over the 2006–2015 period.In the first stage,relative efficiency was calculated using non-parametric data envelopment analysis.In the second stage,the generalized method of moments was used to examine the impact of bank-specific and macroeconomic variables as well as regulation on bank performance,that is,profitability and efficiency.Consider-ing bank size,the results show a diverse impact of regulation on bank performance.Regarding large-and medium-sized banks,regulation positively affects both efficiency and profitability,whereas,for small banks,it negatively affects performance.The results suggest that larger banks have skillfully adapted to the new regulatory environment.In contrast,small banks have problems with profitability and efficiency because the new regulatory framework has imposed additional administrative and regulatory burdens.This could result in future failure or mergers with larger banks,resulting in a higher concentration in the banking sector and increased systemic risk.Our results strongly suggest that regulation should not be implemented equally for all banks;that is,on a one size fits all terms.A distinction between small and large banks when introducing new regulatory frameworks should be made if a reasonable level of competition is to be preserved.

离子液体中Mn(III)Salen催化烯烃环氧化反应选择性合成烯烃环氧化物

本文用乙二胺、环己二胺和邻苯二胺与水杨醛制作了3种不同类型Mn(III)Salen催化剂,选择CH2Cl2有机溶剂和BmimPF6与CH2Cl2组成的混合溶剂2种离子液体,探究了离子液体中不同类型Mn(III)Salen催化剂对苯乙烯环氧化反应的影响效果。结果表明,使用乙二胺和水杨醛制作的Mn(III)Salen催化剂时,苯乙烯的转化率最高,达到了98.8%;选择混合溶剂作为离子液体时,苯乙烯的转化率以及环氧化物的产率相对较高;温度对苯乙烯环氧化反应的转化率有影响,当温度为300K时反应速率较快。综上,将反应温度设定为300K,使用由BmimPF6与CH2Cl2组成的混合溶剂作为离子液体,选择乙二胺和水杨醛制作的Mn(III)Salen催化剂,可以使苯乙烯环氧化物产率最高。

Improved super-elastic Ti-Ni alloy wire for treating adult skeletal class III with facial asymmetry:A case report

BACKGROUND Correcting severe skeletal class III malocclusion with facial asymmetry in adults through orthodontic treatment alone is difficult.CASE SUMMARY In this case report,we describe orthodontic treatment and lower incisor extraction without orthognathic surgery for a 27-year-old man with a transverse discrepancy.The extraction sites were closed using an elastic chain.The use of intermaxillary elastics,improved super-elastic Ti-Ni alloy wire,and unilateral multibend edgewise arch wire was crucial for correcting facial asymmetry and the midline deviation.CONCLUSION After treatment,the patient had a more symmetrical facial appearance,acceptable overjet and overbite,and midline coincidence.The treatment results remained stable 3 years after treatment.This case report demonstrates that a minimally invasive treatment can successfully correct severe skeletal class III malocclusion with facial asymmetry.