XP-endo Finisher清除椭圆形根管细菌生物膜的效果研究

目的:比较XP-endo Finisher(XPF)和被动超声冲洗(passive ultrasonic irrigation,PUI),及两者联合应用清除椭圆形根管细菌生物膜的效果。方法:选取54颗成人离体单根管横截面为椭圆形的前磨牙,建立多菌种生物膜感染根管模型。厌氧培养4周后随机选取6颗为对照,扫描电镜(Scanning electron microscopy,SEM)确认多菌种生物膜形成。余牙应用Vortex Blue预备到40/.06后分为4个实验组(n=12),分别采用传统注射器冲洗(conventional needle irrigation,CNI)、PUI、XPF、PUI+XPF结合3%次氯酸钠溶液进行根管处理。采集样本根管尖、中、冠1/3SEM图像,计算残余细菌生物膜面积百分比。结果:细菌清除效率由高到低依次为PUI+XPF、XPF、PUI、CNI,前两者无统计学差异(P>0.05)。结论:XPF清除椭圆形根管生物膜的效果优于PUI和CNI,与PUI联合应用有加强效果但无显著差异。

Effects of long-chain fatty acid supplementation on the growth performance of grower and finisher pigs: a meta-analysis

Background: Supplementation of feed with long-chain fatty acids(LCFAs) during the grower and finisher phases has long been discussed as a growth promotion strategy in pigs, but its effects are inconsistent. The purpose of our study was to comprehensively evaluate its effects on the growth performance based on the average daily gain(ADG), average daily feed intake(ADFI) and gain: feed(G:F) ratio and to unveil the roles of the basal diet, LCFA concentration and LCFA saturation.Results: We searched the Pub Med and Web of Science databases(articles published from Jan 1 st, 2000, to Sep 30 th,2018;restricted to English) and compared LCFA-supplemented diets with control diets. We retrieved 2346 studies, 18 of which(1314 pigs, 26 records) were eligible for our analysis. We used a random-effects model to calculate the weighted mean differences(WMDs) and 95% confidence intervals(CIs). LCFA supplementation in the grower-finisher phase improved the ADG(WMD = 41.74 g/d, 95% CI: 8.81 to 74.66, P = 0.013) and G:F ratio(WMD = 0.019, 95% CI: 0.006 to 0.032, P = 0.003). For supplementation solely in the finisher phase, we found a similar performance in the ADG(WMD = 39.93 g/d, 95% CI: 26.48 to 53.38, P < 0.001) and G:F ratio(WMD = 0.019, 95% CI: 0.006 to 0.032, P < 0.001) but a reduction in the ADFI(WMD =-83.863 g/d, 95% CI:-156.157 to-11.569, P = 0.023). Specifically, approximately 5%LCFA supplementation in the finisher phase had significant effects on the ADG(WMD = 51.385 g/d, 95% CI: 35.816 to66.954, P < 0.001), ADFI(WMD =-102.869 g/d, 95% CI:-189.236 to-16.502, P = 0.02) and G:F ratio(WMD = 0.028, 95%CI: 0.018 to 0.039, P < 0.001), whereas a concentration of approximately 1% exhibited no effects.Conclusions: Overall, regardless of the basal diet and saturation, LCFA supplementation greatly improves the growth performance of grower and finisher pigs, primarily by increasing the energy density.

Expert Experience and Data-Driven Based Hybrid Fault Diagnosis for High-SpeedWire Rod Finishing Mills

The reliable operation of high-speed wire rod finishing mills is crucial in the steel production enterprise.As complex system-level equipment,it is difficult for high-speed wire rod finishing mills to realize fault location and real-time monitoring.To solve the above problems,an expert experience and data-driven-based hybrid fault diagnosis method for high-speed wire rod finishing mills is proposed in this paper.First,based on its mechanical structure,time and frequency domain analysis are improved in fault feature extraction.The approach of combining virtual value,peak value with kurtosis value index,is adopted in time domain analysis.Speed adjustment and side frequency analysis are proposed in frequency domain analysis to obtain accurate component characteristic frequency and its corresponding sideband.Then,according to time and frequency domain characteristics,fault location based on expert experience is proposed to get an accurate fault result.Finally,the proposed method is implemented in the equipment intelligent diagnosis system.By taking an equipment fault on site,for example,the effectiveness of the proposed method is illustrated in the system.

Synthesis and Characterization of Nonionic Waterborne Polyurethane and Application to Wool Fabric Finishing

A nonionic waterborne polyurethane(WPU) was synthesized by the self-emulsification method using polyether diol(N220),isophorone diisocyanate(IPDI),trimethylolpropane poly(ethylene glycol monomethyl ether)(N120),1,4-butanediol(BDO) and trimethylolpropane(TMP) as the main materials.The effects of the NCO/OH ratio on the emulsion and film properties of NWPU were explored.The experimental results show that the NWPU prepared at an NCO/OH ratio of 1.1 has good emulsion stability and easy film formation,and the resultant film was elastic,soft,and transparent.The sample was used for wool finishing and the application performance was evaluated.When the NWPU dosage reached 40 g·L^(-1),the fabric area felt shrinkage rate reduced from 8.97% to 4.75%,the pilling rating raised from grade 2-3 to grade 4,and the whiteness value only decreased by 3.87%.

A Sustainable Solution Building containerized mini hydropower plants for Indonesian islands

One day in July 2019,two electrical engineers from China arrived at Brawijaya University in Malang,East Java,Indonesia.They had been tasked with finishing the installation,testing,and commissioning of a containerized mini hydropower plant built on the campus not long before.Not many hydropower plants are built on university campuses.Universities often have space,but dams are massive.In this case,the mini hydropower plant was only the size of a twenty-foot-equivalent unit(TEU).Without signage,passersby would never suspect that the structure was a mobile hydropower plant.

Reaching for the Sky

The emerging low-altitude industry is innovative,green,and low-carbon.“Check this out!We are in Shenzhen,China,and we are in the middle of a park,and we are about to have some drinks dropped off by a drone.I’ve never experienced anything like this.The drone is landing now,and we’ve ordered Starbucks.Will the delivery be successful?Let’s have a look.”As soon as Melissa Hutchinson,the mom in the British travel vlogging family the Hutchinsons,finished speaking,a drone carrying a takeout box“came from the sky”and landed on a smart drone delivery locker nearby.Melissa stepped forward and entered the last four digits of her phone number on the screen of the locker.The window immediately opened,and she fished out the package sitting there.Inside the cardboard box was the familiar brown Starbucks paper bag with her matcha tea inside.

Epiphanic Revival: Exploring Metallic Finishes on Batik Fabrics in Ghana

Batik fabric is an integral part of the traditional cloth culture of the Ghanaian traditional setting. However, the batik fabric has marginal usage due to its casual visual appearance. This studio practice seeks to explore the epiphanic revival in the use of metallic finishes on batik substrate to create an enhanced visual appearance with embellished aesthetic sensibilities and diversified use. The researchers adopted the studio-based approach of the qualitative design to manipulate handmade tools, techniques (collagraph) and the batik fabrics through experimentation to produce a glittering mercurial batik fabric which is typically an industrial practice. The studio practice took place at the Textile Design and Technology studio, Takoradi Technical University, Ghana. The traditional batik fabric was manipulated through fabric decoration techniques in accordance with studio-based practices. The Addie model was adopted as a methodological approach in the analysis, design, development, implementation, and evaluation processes of the experimentation processes of the study. Findings revealed that the hand techniques used in the production process for the metallic prints produced interesting accidentals finishes and effects that machine work cannot achieve, producing new discoveries of visual enhancements of traditional batik fabric. Traditional batiks became mercurial with glittery effects. The metallic prints on the fabric also changed its consumption pattern from mere casual fabric to classic and cosmopolitan fabric for varied uses suitable for wearable to non-wearable.

Connected Advantage Interlinked supply chains are good for both China and the rest of the world

As both a beneficiary of global supply chain integration and a contributor to the creation of a new supply chain ecosystem,China is of immense importance to the growth of international supply chains.For example,it’s manufacturing industry is indispensable across every stage of the global supply chain from raw material to intermediate goods production and the assembly of finished products.And with a large consumer base,China has been the place where global goods and services are consumed.

Microfactory for filter bags developed in Sweden

After an intensive few years of development,ACG Kinna Automatic and ACG Nystrom–members of TMAS,the Swedish textile machinery association–have delivered the first microfactory for the production of fully finished filter bags to a major international filtration industry customer,in cooperation with JUKI Central Europe.

Finishing first with Monforts at Techtextil 2024

Monforts–which celebrates its 140th anniversary this year–continues to lead the field in finishing and coating technologies for technical textiles.The company is looking forward to many fruitful discussions on the scope of existing and new processes and applications at the forthcoming Techtextil show in Frankfurt from April 23-26.

US:Textile market size,share&trends and forecasts from 2024 to 2030

The global textile market was valued at USD 1,69513 billion in 2023 and is anticipated to grow at a compound annual growth rate (CAGR) of 7.6%in revenue from 2024 to 2030.The ever-increasing apparel demand from the fashion industry and the meteoric growth of e-commerce platforms are expected to drive market growth over the forecast period.The textile industry works on three major principles:designing,producing,and distributing different flexible materials such as yarn and clothing.Many processes,such as knitting,crocheting,weaving,and others,are primarily used to manufacture a wide range of finished and semi-finished goods in bedding,clothing,apparel,medical,and other accessories.

Huafang Co.,Ltd.:A new journey of high-quality development

Huafang Co., Ltd. has become the leading textile company in China’s dyeing and finishing industry by virtue of its excellent quality of products and innovation. Facing the complicated and changing international situation and domestic economic pressure, the company shows resilient entrepreneurial spirit.

Monforts to debut the coaTTex at Techtextil 2024

At the Techtextil show for technical textiles which take place in Frankfurt from April 23-25,Monforts launched its new coaTTex coating unit exclusively dedicated to air knife and knife-over-roller coating.For single-sided application with paste or foam,the versatile coaTTex is suitable for both incorporation into existing finishing ranges as well as installation with new Monforts lines,notably the industry-leading Montex stenter systems.

Monforts and Uniferro join forces at Febratex 2024

Having recently secured significant major orders in Central and South America,finishing machinery specialist Monforts will exhibit at the upcoming Febratex textile machinery exhibition taking place in Blumenau,Brazil,from August 20-23,along with Uniferro,its new regional pa rtner.This new alliance follows the well-earned retirement of Herbert Erdmann of the service agency Euro Texteis,who has worked tirelessly with Monforts over more than 30 years to secure a leading position in the region for Montex stenter dryers,Thermex dyeing ranges and associated finishing technology.

环球旅行十年

丹麦一男子不坐飞机环游世界且中途从未回国,经过10年的旅程后终于达成目标。1 Torbjorn Pedersen is a Danish trav-eler who recently finished a trip around the world.But this wasn't just any trip.Mr Pedersen spent nearly 10 years visiting every country in the world without flying.

Evaluating Residual Dentine Thickness Cervically Following Various Anterior Crown Preparations for Zirconia Full Coverage Single Crowns: An in Vitro Analysis

Background: A reduced residual dentine thickness following crown preparation has a conceivable impact on pulp degeneration by increasing the pulp’s susceptibility to injury. In crown preparations, three different finishing lines are used. These are shoulder, chamfer, and knife edge. Each with its comparative advantages and disadvantages. There is inadequate scientific evidence on which of these finishing lines will leave the most amount of residual dentine, after standard crown preparations on mandibular incisors and maxillary lateral incisors to preserve their pulpal health. Objective: To evaluate residual dentine thickness following various cervical finishing lines of anterior crown preparations for zirconia full coverage. Materials and Methods: A prospective comparative study was conducted from September 2nd to November 5th, 2022, using mandibular incisors and maxillary laterals extracted from individuals between ages 18 to 30. Each of the three groups of teeth was randomly divided into three cervical margin preparations as follows: Shoulder (n = 15), chamfer (n = 15), and knife edge (n = 15). The teeth were disinfected and stored in 10% formalin. Silicone impressions followed by crown preparations were done on teeth mounted on phantom head manikins. The teeth were sectioned 0.5 mm coronal to the cemento-enamel junction using a separating disc and the mesial, distal, buccal, and lingual thickness were measured using a digital caliper. ANOVA analysis was applied to assess the difference in mean residual dentine thickness among the finishing lines and the Tukey test used for mean comparison. Results: Knife edge finishing lines had 2.05 mm of residual dentine thickness, for upper lateral incisors lingually and had an amount of 1.55 mm and 1.47 mm for lower central teeth mesially and distally respectively. Shoulder finishing lines had an amount of 0.58 mm for lower lateral incisors mesially. Interproximal areas had the least amounts of residual dentine for shoulder and chamfer finishing lines of 0.58 mm and 0.78 mm respectively. Conclusions: There was a significant statistical difference in the thickness of residual dentine at the various cervical finishing line margins. The knife edge finishing line was protective enough for zirconia crown preparations.

An in Vitro Analysis to Evaluate Coronal Residual Dentine Thickness after Different Anterior Crown Preparations

Background: Knife edge, chamfer, and shoulder are the three distinct finishing lines utilized in crown preparations. Each finishing line has relative benefits and drawbacks. However, not much scientific data exists regarding which of these finishing lines will leave the most amount of residual dentine coronally on maxillary lateral incisors and mandibular incisors. Objective: To assess the coronal residual dentine thickness after different cervical finishing lines for anterior crown preparations. Materials and Methods: A prospective comparative study was conducted including mandibular incisors and maxillary laterals that were taken from subjects from 18 to 30 years old. Teeth in each of the three groups were randomly separated into three cervical margin preparation groups: knife edge, chamfer and shoulder. The teeth were then prepared for single crown coverage using these finishing lines. The teeth were sectioned halfway through the crown preparation, and a digital caliper was used to determine the residual dentine thickness at the buccal, lingual, mesial and distal areas. The Tukey test was used for mean comparison, and ANOVA analysis was used to evaluate the variation in mean residual dentine thickness. Results: For upper lateral incisors, knife edge finishing lines showed the highest amount of remaining dentine thickness—1.5 mm. lingually, while the upper lateral incisors mesially had the least amount of 0.53 mm for shoulder finishing lines. The least residual dentine (0.53 mm for the shoulder and 0.70 mm for the chamfer finishing line) was found in the interproximal portions of all the teeth that were selected. Lower central incisors had the least amount of residual dentine 0.61 mm for shoulder preparations mesially whiles lower lateral incisors had the least amount of residual dentine for shoulder preparations 0.58 mm distally. There was a statistically significant difference of 0.001 across the groups. Conclusion: The thickness of residual dentine seen coronally after the three finishing line preparations showed a statistically significant difference and the knife edge finishing line provided enough coronal protection within the scope of this study.

Optimization of Finishing Process and Energy Savings in Denim Textile Facility

Denim is widely accepted among exported textile products due to its aesthetics, appearance, and fashion. Practitioners employed several physical or chemical treatments to improve denim qualities in denim finishing operations. So, several treatment processes, including enzymatic, bleaching, singeing, heat set, and ozone finish, are used, which made this processing more energy consumption and time-consuming. Therefore, it is significant to investigate how changing the chemicals and raw ingredients could improve the finishing process, which is environmentally and economically beneficial for sustainable production practices in the denim finishing process. This study’s research design comprises an experimental investigation in a denim plant in Bangladesh. Two different fabrics were chosen to analyze, determining the potential savings of finishing on the denim fabrics’ performance characteristics. By deducting singeing and heat-set processes, the researchers ran an experimental process by maintaining the same length of fabric. Then, the impacts of finishing process optimization on the mechanical, thermal, and comfort parameters of drape, stiffness, and tear strength were examined. The study’s findings demonstrated that this experiment increased productivity and reduced the finishing unit’s energy consumption without compromising the denim fabrics’ quality. This study significantly impacts environmental sustainability by preserving limited energy resources and manufacturing denim finishing processes.

CHONGQING’S APPROACH TO RURAL REVITALIZATION

After China finished building a moderately prosperous society in all respects,thus completing the First Centenary Goal,it went on toward the Second Centenary Goal of build­ing a great modern socialist country in all respects.This transition has led to accelerated efforts to advance Chinese modernization in the agricultural sector and rural areas.Rural development is of vital importance for the realiza­tion of China’s Second Centenary Goal,and has drawn broad attention globally.

How I've Changed

My life has changed a lot in the last few years.Firstly,I used to be short and heavy.But now I'm tall and thin.I think that's because I've been eating more vegetables and fruit.Secondly,I used to be afraid of darkness.But now I'm brave enough to go home alone at night.However,the biggest change in my life is that I have fallen in love with books.The book which inspired me most was Pride and Prejudice.Since I finished reading the book,I have been reading books every day.Books enrich my life.