Zeitschriftenartikel: „Chemistry [mesh]“

1

Service, R. F. „CHEMISTRY: To Net Big Molecules, Widen the Mesh“. Science 296, Nr. 5567 (19.04.2002): 449b—451. http://dx.doi.org/10.1126/science.296.5567.449b.

Der volle Inhalt der Quelle

APA, Harvard, Vancouver, ISO und andere Zitierweisen

2

Bitner, Daniel P., und Filippo Filicori. „Mesh or no mesh in anti-reflux surgery“. Mini-invasive Surgery 6 (2022): 46. http://dx.doi.org/10.20517/2574-1225.2022.46.

Der volle Inhalt der Quelle

APA, Harvard, Vancouver, ISO und andere Zitierweisen

3

Torshin, I. Yu, O. A. Gromova und L. A. Maiorova. „The prospects for the use of vitamin B12 derivatives in pharmacology“. FARMAKOEKONOMIKA. Modern Pharmacoeconomics and Pharmacoepidemiology 16, Nr. 3 (10.11.2023): 501–11. http://dx.doi.org/10.17749/2070-4909/farmakoekonomika.2023.198.

Der volle Inhalt der Quelle

Annotation:

Background. The structure of corrin tetrapyrrole macrocycles (compounds similar in structure to vitamin B12) is a kind of universal chemical template for targeted drug delivery, and the development of chemical sensors and antidotes.Objective: systematization of information on targeted modulation of certain corrins’ properties through chemical modifications.Material and methods. Literature analysis using modern methods of topological and metric data analysis was carried out. All relevant publications (n=863) were extracted from the PubMed/MEDLINE database on request “(cobalamin OR Cobyrinic OR vitamin B12) AND (Molecular Conformation [MeSH Terms] OR Vitamin B 12/*analogs & derivatives/*chemistry [MeSH Terms] OR Vitamin B 12/*chemistry [MeSH Terms] OR Structure-Activity Relationship [MeSH Terms])”.Results. Information was systematized on how it is possible to regulate the properties of vitamin B12 (cobalamin) derivatives by introducing specific substitutions of groups in the corrin ring, on chemical modifications of cobalamin derivatives, biosynthetic approaches to the synthesis of cobalamin derivatives, and the effects of interactions of these modified corrins with “small” inorganic and organic molecules.Conclusion. The results obtained by systematic computer analysis of publications on corrins make it possible to reasonably form samples of candidate molecules for corrin studies in silico, in vitro, and in vivo.

APA, Harvard, Vancouver, ISO und andere Zitierweisen

4

Zhou, Tiantian, Jinyan Wang, Jonathan D. Todd, Xiao-Hua Zhang und Yunhui Zhang. „Quorum Sensing Regulates the Production of Methanethiol in Vibrio harveyi“. Microorganisms 12, Nr. 1 (24.12.2023): 35. http://dx.doi.org/10.3390/microorganisms12010035.

Der volle Inhalt der Quelle

Annotation:

Methanethiol (MeSH) and dimethyl sulfide (DMS) are important volatile organic sulfur compounds involved in atmospheric chemistry and climate regulation. However, little is known about the metabolism of these compounds in the ubiquitous marine vibrios. Here, we investigated MeSH/DMS production and whether these processes were regulated by quorum-sensing (QS) systems in Vibrio harveyi BB120. V. harveyi BB120 exhibited strong MeSH production from methionine (Met) (465 nmol mg total protein−1) and weak DMS production from dimethylsulfoniopropionate (DMSP) cleavage. The homologs of MegL responsible for MeSH production from L-Met widely existed in vibrio genomes. Using BB120 and its nine QS mutants, we found that the MeSH production was regulated by HAI-1, AI-2 and CAI-1 QS pathways, as well as the luxO gene located in the center of this QS cascade. The regulation role of HAI-1 and AI-2 QS systems in MeSH production was further confirmed by applying quorum-quenching enzyme MomL and exogenous autoinducer AI-2. By contrast, the DMS production from DMSP cleavage showed no significant difference between BB120 and its QS mutants. Such QS-regulated MeSH production may help to remove excess Met that can be harmful for vibrio growth. These results emphasize the importance of QS systems and the MeSH production process in vibrios.

APA, Harvard, Vancouver, ISO und andere Zitierweisen

5

Suciu, Bogdan Andrei, Ioana Halmaciu, Decebal Fodor, Cristian Trambitas, Adrian Ivanescu, Dumitru Godja, Vlad Vunvulea, Calin Molnar und Klara Brinzaniuc. „Comparative Study on the Efficiency of 2 Different Types of Meshes (Polypropylene and ProGripTM ) in the Surgical Treatment of Incisional Hernias“. Materiale Plastice 55, Nr. 2 (30.06.2018): 152–55. http://dx.doi.org/10.37358/mp.18.2.4984.

Der volle Inhalt der Quelle

Annotation:

Postoperative eventration is a quite common condition in patients with clinical records of abdominal surgery. The purpose of this study was to investigate the efficacy of use of 2 different types of meshes (Polypropylene mesh and ProGripTM mesh-self-gripping mesh) in the surgical treatment of incisional hernias. In this respect, we conducted a study in which we introduced 128 patients operated for incisional hernias. Patients were divided into 2 lots: group A (102 patients with polypropylene mesh) and group B (26 patients with ProGripTM mesh). From the analysis of the data studied, we noticed that the average duration of surgery and hospitalization for patients with ProGripTM mesh is lower compared to patients with polypropylene mesh. Also, the rate of local postoperative complications was lower when using the ProGripTM mesh (15.38%) than in the case of polypropylene mesh. In conclusion, we can state that the use of the ProGripTM heterologous mesh is beneficial in the surgical treatment of patients with incisional hernias. The major advantage of using this type of mesh is given by a shorter hospitalization period for these patients, as well as by a lower rate of local postoperative complications in these patients.

APA, Harvard, Vancouver, ISO und andere Zitierweisen

6

Arsad, Effendi. „SIFAT FISIK DAN KIMIA WOOD PELLET DARI LIMBAH INDUSTRI PERKAYUAN SEBAGAI SUMBER ENERGI ALTERNATIF“. Jurnal Riset Industri Hasil Hutan 6, Nr. 1 (01.07.2014): 1. http://dx.doi.org/10.24111/jrihh.v6i1.1219.

Der volle Inhalt der Quelle

Annotation:

Carakteristic physical and chemistry of Wood pellet from Industrial Disposal of Wood as Sources Energy Alternatif The research to gaved for physical and chemistry of Wood pellet from Industrial. Processing approximately 12%, sawdust dried to moisture content of sieved that is size of 15 mesh, 25 mesh and 35 mesh. Heating temperature were 60 0C and 110 0C. Moisture content of flawer wood pellet 4,46% - 9,95%, acacia wood pellet were 4.38% - 7.52% and tarap wood pellet were 4.60% - 9.98%. Density of flawer wood pellet were 0.51 - 0.78, acacia wood pellet were 0.61 - 0.78 and tarap wood pellet were 0.56 - 0.71, ash content of wood flawer from 0.87 - 2.04%, acacia 0.54 - 0.94% and ash content of tarap wood 1.71 - 2.05%. Calorific value of wood pellets flawers wood 3921,12 - 4150,19 cal/g, acacia wood 4022,29 - 4254,91 cal/g and tarap wood 3920,13 - 4125,28 cal/g. The higher temperature of the heating effect on reality the reduction of water and the weight of ash wood pellets while it was increasing calorific value.Keywords: waste wood, flawers wood, acacia wood, tarap wood, wood pellet

APA, Harvard, Vancouver, ISO und andere Zitierweisen

7

Noditi, George, Raul Zoler, Gheorghe Noditi und Lazar Fulger. „Synthetic Mesh for Large Ventral Hernia Repair Correlated with Evaluation of Quality-of-life A 5 years retrospective study“. Revista de Chimie 69, Nr. 5 (15.06.2018): 1264–67. http://dx.doi.org/10.37358/rc.18.5.6304.

Der volle Inhalt der Quelle

Annotation:

Ventral hernia mesh repair is considered a standard procedure in most countries and widely accepted as superior to primary suture repair. We conducted a 5 years retrospective observational study on large and giant incizional hernia repair in our Clinics. 176 consecutive patients who had a ventral hernia repair with mesh implant in 2012-2016 were evaluated in terms of demographic characteristics, comorbidities, surgical conditions (defect size, mesh type, positioning of the mesh, length of hospital) and surgical outcomes by means of EuraHS-QoL score pre- and 30 days postoperative to assess quality of life (Qol). Alloplastic substitution with polypropylene, polyester and Dacron mesh has been used in all cases. Polypropylene mesh has been used in most of cases (91%). Most preferred mesh position was intraperitoneal (78%), then retromuscular (15%) and preperitoneal (7%). Immediate postoperative complications appeared in 41 cases (23.3%). Mean hospital length was 14,3 days. We could notice a double pre- and postoperative difference for the pain, with statistical significance (2.71�1.70; p=0.23) and the same pattern of distribution for restriction of activities and for cosmetic discomfort.

APA, Harvard, Vancouver, ISO und andere Zitierweisen

8

Garcia-Lovella, Yaniel, Idalberto Herrera-Moya, Manuel A. Rubio-Rodríguez und Jeevan Jayasuriya. „Assessment of LES Dynamic Smagorinsky-Lilly model resolution for combustion engineering applications“. DYNA 90, Nr. 225 (14.03.2023): 95–104. http://dx.doi.org/10.15446/dyna.v90n225.103219.

Der volle Inhalt der Quelle

Annotation:

Large Eddy Simulation (LES) has become a powerful tool for dealing with turbulence. Nevertheless, mesh resolution of the simulated domain under the LES approach was shown to be a key matter. Critical regions should maintain an adequate mesh resolution and also the highest possible quality. LES with the Dynamic Smagorisky-Lilly sub-grid model was used for the simulation of SMA1-flame, to assess the influence of the mesh resolution on the instantaneous velocity fields, species profiles, and temperatures profiles. The results of the simulation suggest a comprehensible agreement with experimental data. Nevertheless, some areas in the highly rotational velocity field are not properly solved, mainly due to a poor mesh resolution of such areas. As a result, the central jet’s decay rate was not accurately predicted. On the other hand, the temperature and species profiles were reasonably computed, considering the simple chemistry provided by the Eddy Dissipation Model (EDM).

APA, Harvard, Vancouver, ISO und andere Zitierweisen

9

Wadhawan, Jay D., Peter J. Welford, Kamran Yunus, Adrian C. Fisher und Richard G. Compton. „Voltammetry at micro-mesh electrodes“. Journal of the Brazilian Chemical Society 14, Nr. 4 (August 2003): 510–16. http://dx.doi.org/10.1590/s0103-50532003000400004.

Der volle Inhalt der Quelle

APA, Harvard, Vancouver, ISO und andere Zitierweisen

10

Luo, Guanzhou, Li Wang, Xinying Li, Kai Yang, Yongle Luo, Shouping Xu, Pihui Pi und Xiufang Wen. „Facile fabrication of an F-POSS polymer-based liquid-repellent Cu mesh with excellent durability and self-cleaning performance“. Soft Matter 15, Nr. 47 (2019): 9727–32. http://dx.doi.org/10.1039/c9sm01748h.

Der volle Inhalt der Quelle

Annotation:

A facile method that combines alkali-assisted oxidation and –SH chelation with a click chemistry reaction was employed to create an F-POSS polymer surface (fluorinated octavinyl polyhedral oligomeric silsesquioxane polymer)-based Cu mesh (F-POSS-OM).

APA, Harvard, Vancouver, ISO und andere Zitierweisen

11

Feizi Mohazzab, Bahareh, Babak Jaleh, Zahra Issaabadi, Mahmoud Nasrollahzadeh und Rajender S. Varma. „Stainless steel mesh-GO/Pd NPs: catalytic applications of Suzuki–Miyaura and Stille coupling reactions in eco-friendly media“. Green Chemistry 21, Nr. 12 (2019): 3319–27. http://dx.doi.org/10.1039/c9gc00889f.

Der volle Inhalt der Quelle

Annotation:

The immobilization of palladium nanoparticles (Pd NPs) on stainless-steel mesh entails two steps via deposition of graphene oxide (GO) on the stainless-steel mesh (mesh-GO) by electrophoretic deposition (EPD), and preparation of Pd NPs by laser ablation in liquids (LAL).

APA, Harvard, Vancouver, ISO und andere Zitierweisen

12

Vasile, Danut, George Iancu, Raluca Claudia Iancu und Dragos Virgil Davitoiu. „Main Characteristics for Materials Used as Synthetic Surgical Meshes“. Materiale Plastice 54, Nr. 2 (30.06.2017): 229–34. http://dx.doi.org/10.37358/mp.17.2.4822.

Der volle Inhalt der Quelle

Annotation:

Synthetic meshes are steadily developed and optimized to provide the best biocompatibility, resistance and elasticity with minimal side effects when used in vivo. This article presents mesh parameters, which influence the biological outcomes in surgical cases. Material, structure, resistance to the applied force, elasticity and biocompatibility are listed below in order to clarify the advantages and shortcomings of different mesh types. Future developments in synthetic mesh industry are presented as well in order to improve mesh acceptability in vivo and optimize healing process. There is no ideal mesh, but only prostheses with fewer side effects when correctly used, in accordance with patient needs.

APA, Harvard, Vancouver, ISO und andere Zitierweisen

13

Aziz, Mahmoud A., Shady Elzeftawy, Ayman Shemes, Ahmed Elghrieb, Moh Abdelmaksood und Mohamed Shetiwy. „Transabdominal retro muscular versus intraperitoneal onlay mesh repair of ventral hernia: a randomized controlled study“. Egyptian Journal of Surgery 42, Nr. 3 (Juli 2023): 705–13. http://dx.doi.org/10.4103/ejs.ejs_144_23.

Der volle Inhalt der Quelle

Annotation:

Background Although laparoscopic ventral hernia repair has become a well-established alternative for open repair, traditional intraperitoneal mesh placement in direct contact with the bowel had many drawbacks and complications; in addition, it requires extensive mesh fixation and special composite mesh. Using the peritoneum and posterior rectus sheath as a barrier between the mesh and the bowel will evade these complications and decrease the cost. Patients and methods This prospective study was conducted in between May 2022 and December 2022 on 50 patients with noncomplicated ventral hernia with an average defect size of 5 cm. Patients were randomly allocated into two groups: intraperitoneal onlay mesh (IPOM) group (25) patients and transabdominal retro muscular mesh (TARM) group (25) patients. Both groups were compared as regards preoperative demographics, intraoperative complications and operative time and postoperative outcomes and complications. Results With a mean age of (44.96±7.27) of IPOM and (48.92±7.17) of TARM group, a significant longer operative time was spent in TARM repair (108.40±9.43 min). Postoperative pain was less in patients with TARM repair and hence they had earlier recovery and restoration of daily activities. Using a double-face composite mesh made the cost of IPOM repair significantly higher than TARM (P < 0.001). Overall postoperative complications and recurrence rate showed no significant difference between both techniques. Conclusion TARM repair seems to be a safe and good alternative to IPOM repair in terms of lower economic cost and less postoperative pain.

APA, Harvard, Vancouver, ISO und andere Zitierweisen

14

Qureshi, Hisham Jahangir, Nauman Khurram, Usman Akmal, Md Arifuzzaman, Qamar Habib und Abdulrahman Fahad Al Fuhaid. „Flexure Performance of Ferrocement Panels Using SBR Latex and Polypropylene Fibers with PVC and Iron Welded Meshes“. Polymers 15, Nr. 10 (14.05.2023): 2304. http://dx.doi.org/10.3390/polym15102304.

Der volle Inhalt der Quelle

Annotation:

Ferrocement panels are thin-section panels that are widely used in lightweight construction. Due to lesser flexural stiffness, they are susceptible to surface cracking. Water may penetrate through these cracks and may cause corrosion of conventional thin steel wire mesh. This corrosion is one of the major factors which affect the load-carrying and durability of ferrocement panels. There is a need to improve the mechanical performance of ferrocement panels either through using some non-corrodible reinforcing mesh or through improving the cracking behavior of the mortar mix. In the present experimental work, PVC plastic wire mesh is employed to address this problem. SBR latex and polypropylene (PP) fibers are also utilized as admixtures to control the micro-cracking and improve the energy absorption capacity. The main idea is to improve the structural performance of ferrocement panels that may be utilized in lightweight, low-cost house construction and sustainable construction. The ultimate flexure strength of ferrocement panels employing PVC plastic wire mesh, welded iron mesh, SBR latex, and PP fibers is the subject of the research. Test variables are the type of mesh layer, the dosage of PP fiber, and SBR latex. Experimental tests are conducted on 16 simply supported panels of size 1000 × 450 mm and subjected to four-point bending test. Results indicate that the addition of latex and PP fibers only controls the initial stiffness and does not have any significant effect on ultimate load. Due to the increased bonding between cement paste and fine aggregates, the addition of SBR latex improves the flexural strength by 12.59% and 11.01% for iron mesh (SI) and PVC plastic mesh (SP), respectively. The results also indicate an improvement in the flexure toughness of specimens with PVC mesh as compared to specimens with iron welded mesh; however, a smaller peak load is observed (i.e., 12.21% for control specimens) compared with the specimen with welded iron mesh. The failure patterns of the specimens with PVC plastic mesh exhibit a smeared cracking pattern that shows that they are more ductile compared to samples with iron mesh.

APA, Harvard, Vancouver, ISO und andere Zitierweisen

15

Amin, Shahid, M. A. Rehman, Amir Naseem, Ilyas Khan, Nawa Alshammari und Nawaf N. Hamadneh. „Analysis of Complex Networks via Some Novel Topological Indices“. Mathematical Problems in Engineering 2022 (29.04.2022): 1–13. http://dx.doi.org/10.1155/2022/9040532.

Der volle Inhalt der Quelle

Annotation:

Chemical graph theory is a field of mathematical chemistry that links mathematics, chemistry, and graph theory to solve chemistry-related issues quantitatively. Mathematical chemistry is an area of mathematics that employs mathematical methods to tackle chemical-related problems. A graphical representation of chemical molecules, known as the molecular graph of the chemical substance, is one of these tools. A topological index (TI) is a mathematical function that assigns a numerical value to a (molecular) graph and predicts many physical, chemical, biological, thermodynamical, and structural features of that network. In this work, we calculate a new topological index namely, the Sombor index, the Super Sombor index, and its reduced version for chemical networks. We also plot our computed results to examine how they were affected by the parameters involved. This document lists the distinct degrees and degree sums of enhanced mesh network, triangular mesh network, star of silicate network, and rhenium trioxide lattice. The edge partitions of these families of networks are tabled which depend on the sum of degrees of end vertices and the sum of the degree-based edges. These edge partitions are used to find closed formulae for numerous degree-based topological indices of the networks.

APA, Harvard, Vancouver, ISO und andere Zitierweisen

16

Mohammadi, Naser, Juan Carlos Abrego-Martinez und Mohamed Mohamedi. „Three-Dimensional Pinecone-like Binder-Free Pt–TiO2 Nanorods on Ti Mesh Structures: Synthesis, Characterization and Electroactivity towards Ethanol Oxidation“. Molecules 27, Nr. 6 (16.03.2022): 1921. http://dx.doi.org/10.3390/molecules27061921.

Der volle Inhalt der Quelle

Annotation:

We report here the synthesis of binderless and template-less three-dimensional (3D) pinecone-shaped Pt/TiO2/Ti mesh structure. The TiO2 hydrothermally synthesized onto Ti mesh is composed of a mixture of flower-like nanorods and vertically aligned bar-shaped structures, whereas Pt film grown by pulsed laser deposition displays a smooth surface. XRD analyses reveal an average crystallite size of 41.4 nm and 68.5 nm of the TiO2 nanorods and Pt, respectively. In H2SO4 solution, the platinum oxide formation at the Pt/TiO2/Ti mesh electrode is 180 mV more negative than that at the Pt/Ti mesh electrode, indicating that TiO2 provides oxygeneous species at lower potentials, which will facilitate the removal of CO-like intermediates and accelerate an ethanol oxidation reaction (EOR). Indeed, the Pt/TiO2/Ti mesh catalyst exhibits current activity of 1.19 mA towards an EOR at a remarkably superior rate of 4.4 times that of the Pt/Ti mesh electrode (0.27 mA). Moreover, the presence of TiO2 as a support to Pt delivers a steady-state current of 2.1 mA, with an increment in durability of 6.6 times compared to Pt/Ti mesh (0.32 mA). Pt is chosen here as a benchmark catalyst and we believe that with catalysts that perform better than Pt, such 3D pinecone structures can be useful for a variety of catalytic or photoelectrochemical reactions.

APA, Harvard, Vancouver, ISO und andere Zitierweisen

17

Mastalier Manolescu, Bogdan Stelian, Valentin Popescu, Marius Septimiu Petrutescu, Andrada Serafim und Izabela Cristina Stancu. „Evaluations of Implanted Polypropylene Mesh After Surgical Removal Due to Eventration or Mesh Rejection“. Materiale Plastice 54, Nr. 1 (30.03.2017): 49–52. http://dx.doi.org/10.37358/mp.17.1.4783.

Der volle Inhalt der Quelle

Annotation:

The Gold standard in parietal wall hernias is represented by mesh implantation. Both wall repair and hernia-associated complications are related to the anatomic location and biomechanics of the structures involved specificity. This work reports the results of the intraoperative and postoperative evaluation of synthetic polypropylene mesh integration. The mesh and the surrounding tissue, previously removed and preserved, have been analyzed macroscopically and at microscopic level. The tissue invaded the pores of the mesh and coated the monofilaments. The right balance between the mesh type and tissular response is hard to evaluate preoperatively, due to individual variations, but we can upgrade the criteria used to personalize the treatment for the best possible outcome.

APA, Harvard, Vancouver, ISO und andere Zitierweisen

18

Way, Raymond M. „Volatile Oil Analysis Of Cassia Bark (Cinnamon): Investigation Of Systematic Errors“. Journal of AOAC INTERNATIONAL 68, Nr. 4 (01.07.1985): 622–25. http://dx.doi.org/10.1093/jaoac/68.4.622.

Der volle Inhalt der Quelle

Annotation:

Abstract Results of these studies demonstrate that steam-distillable volatile oil within a lot of cassia bark is heterogeneously distributed; that sample preparation can contribute a significant part of the overall analytical error; and that the latter error can be reduced by specifying that the sample be ground to pass a U.S. 20 mesh screen rather than a U.S. 40 mesh screen. An F-distribution value of 6.7 was calculated for the data, from 6 laboratories, used for statistical analysis. The critical F-distribution is 5.05, suggesting a significant difference in the means of the U.S. 20 mesh data and the U.S. 40 mesh data. The problem of sampling segregated materials where the functional form of the quality distribution is not known is briefly discussed.

APA, Harvard, Vancouver, ISO und andere Zitierweisen

19

Najm, Alfred, Adelina-Gabriela Niculescu, Marius Rădulescu, Bogdan Severus Gaspar, Alexandru Mihai Grumezescu und Mircea Beuran. „Novel Material Optimization Strategies for Developing Upgraded Abdominal Meshes“. International Journal of Molecular Sciences 24, Nr. 18 (19.09.2023): 14298. http://dx.doi.org/10.3390/ijms241814298.

Der volle Inhalt der Quelle

Annotation:

Over 20 million hernias are operated on globally per year, with most interventions requiring mesh reinforcement. A wide range of such medical devices are currently available on the market, most fabricated from synthetic polymers. Yet, searching for an ideal mesh is an ongoing process, with continuous efforts directed toward developing upgraded implants by modifying existing products or creating innovative systems from scratch. In this regard, this review presents the most frequently employed polymers for mesh fabrication, outlining the market available products and their relevant characteristics, further focusing on the state-of-the-art mesh approaches. Specifically, we mainly discuss recent studies concerning coating application, nanomaterials addition, stem cell seeding, and 3D printing of custom mesh designs.

APA, Harvard, Vancouver, ISO und andere Zitierweisen

20

Socea, Bogdan, Laura Ileana Socea, Ovidiu Gabriel Bratu, Bogdan Mastalier, Mihai Dimitriu, Alexandru Carap und Vlad Denis Constantin. „Recurrence Rates and Mesh Shrinkage After Polypropylene vs. Polyester Mesh Hernia Repair in Complicated Hernias“. Materiale Plastice 55, Nr. 1 (30.03.2018): 79–81. http://dx.doi.org/10.37358/mp.18.1.4967.

Der volle Inhalt der Quelle

Annotation:

Prosthetic mesh implants in hernia repair are frequently used based on the fact that lower recurrence rates are detected compared to anatomic repair. In latest years, researchers tried to answer weather there is an ideal mesh material for abdominal hernia repair. The studies tried to compare resistance, bio-tolerance, rates of recurrence and infection of several materials used in alloplasty. The results are far from pointing an unique ideal chemical structure of mesh. In our study, we compared the results of a cohort of 265 patients operated in 2010 and 2011 in our clinic for complicated abdominal incisional hernias. We compared the results of polypropylene mesh vs. polyester. Polypropylene mesh proved significantly better for preventing hernia recurrence and showed a lower shrinkage rate.

APA, Harvard, Vancouver, ISO und andere Zitierweisen

21

Xie, Yan, Naoki Kawazoe, Yingnan Yang und Guoping Chen. „Preparation of mesh-like collagen scaffolds for tissue engineering“. Materials Advances 3, Nr. 3 (2022): 1556–64. http://dx.doi.org/10.1039/d1ma01166a.

Der volle Inhalt der Quelle

Annotation:

Collagen meshes with large or small openings were prepared after selective removal of PLGA mesh from PLGA–collagen composite mesh or collagen-coated PLGA mesh. The collagen meshes support human skin fibroblast adhesion and promote cell proliferation.

APA, Harvard, Vancouver, ISO und andere Zitierweisen

22

Hosseini, Ashkan, Johannes L. T. Hage, Koen Meijer, Erik Offerman und Yongxiang Yang. „On the Importance of Model Selection for CFD Analysis of High Temperature Gas-Solid Reactive Flow; Case Study: Post Combustion Chamber of HIsarna Off-Gas System“. Processes 11, Nr. 3 (10.03.2023): 839. http://dx.doi.org/10.3390/pr11030839.

Der volle Inhalt der Quelle

Annotation:

In this paper a CFD analysis of HIsarna off-gas system for post combustion of CO-H2-carbon particle mixture is presented to evaluate the effect of different sub-models and parameters on the accuracy of predictions and simulation time. The effects of different mesh type, mesh grid size, radiation models, turbulent models, kinetic mechanism, turbulence chemistry interaction models, including and excluding gas-solid reactions, number of reactive solid particles are investigated in detail. Based on the accuracy of the predictions and agreement with counterpart measured values, the best combination is selected and conclusions are derived. It was found that radiation and turbulence chemistry interaction model have a major effect on the temperature and composition profile prediction along the studied off-gas system, compared to the variations in other models. The effect of these two models becomes even more evident when the temperature and fuel content of the flue gas are high.

APA, Harvard, Vancouver, ISO und andere Zitierweisen

23

Ong, Wei Li, Ken Wee Yew, Chuan Fu Tan, Teck Keng Tan Adrian, Minghui Hong und Ghim Wei Ho. „Highly flexible solution processable heterostructured zinc oxide nanowires mesh for environmental clean-up applications“. RSC Adv. 4, Nr. 52 (2014): 27481–87. http://dx.doi.org/10.1039/c4ra03951c.

Der volle Inhalt der Quelle

Annotation:

ZnO nanowires loaded with Pt, Ag and CuO nanoparticles were synthesized on a flexible mesh for environmental clean-up applications. The heterostructured nanowires mesh is robust with stable photoresponse under bending. The mesh shows photocatalytic degradation and oil–water separation capabilities.

APA, Harvard, Vancouver, ISO und andere Zitierweisen

24

Brock, Nelson L., Christian A. Citron, Claudia Zell, Martine Berger, Irene Wagner-Döbler, Jörn Petersen, Thorsten Brinkhoff, Meinhard Simon und Jeroen S. Dickschat. „Isotopically labeled sulfur compounds and synthetic selenium and tellurium analogues to study sulfur metabolism in marine bacteria“. Beilstein Journal of Organic Chemistry 9 (15.05.2013): 942–50. http://dx.doi.org/10.3762/bjoc.9.108.

Der volle Inhalt der Quelle

Annotation:

Members of the marine Roseobacter clade can degrade dimethylsulfoniopropionate (DMSP) via competing pathways releasing either methanethiol (MeSH) or dimethyl sulfide (DMS). Deuterium-labeled [2H6]DMSP and the synthetic DMSP analogue dimethyltelluriopropionate (DMTeP) were used in feeding experiments with the Roseobacter clade members Phaeobacter gallaeciensis DSM 17395 and Ruegeria pomeroyi DSS-3, and their volatile metabolites were analyzed by closed-loop stripping and solid-phase microextraction coupled to GC–MS. Feeding experiments with [2H6]DMSP resulted in the incorporation of a deuterium label into MeSH and DMS. Knockout of relevant genes from the known DMSP demethylation pathway to MeSH showed in both species a residual production of [2H3]MeSH, suggesting that a second demethylation pathway is active. The role of DMSP degradation pathways for MeSH and DMS formation was further investigated by using the synthetic analogue DMTeP as a probe in feeding experiments with the wild-type strain and knockout mutants. Feeding of DMTeP to the R. pomeroyi knockout mutant resulted in a diminished, but not abolished production of demethylation pathway products. These results further corroborated the proposed second demethylation activity in R. pomeroyi. Isotopically labeled [2H3]methionine and 34SO4 2−, synthesized from elemental 34S8, were tested to identify alternative sulfur sources besides DMSP for the MeSH production in P. gallaeciensis. Methionine proved to be a viable sulfur source for the MeSH volatiles, whereas incorporation of labeling from sulfate was not observed. Moreover, the utilization of selenite and selenate salts by marine alphaproteobacteria for the production of methylated selenium volatiles was explored and resulted in the production of numerous methaneselenol-derived volatiles via reduction and methylation. The pathway of selenate/selenite reduction, however, proved to be strictly separated from sulfate reduction.

APA, Harvard, Vancouver, ISO und andere Zitierweisen

25

Zhang, Kai, Ali Ghobadian und Jamshid M. Nouri. „Scale-Resolving Simulation of a Propane-Fuelled Industrial Gas Turbine Combustor Using Finite-Rate Tabulated Chemistry“. Fluids 5, Nr. 3 (29.07.2020): 126. http://dx.doi.org/10.3390/fluids5030126.

Der volle Inhalt der Quelle

Annotation:

The scale-resolving simulation of a practical gas turbine combustor is performed using a partially premixed finite-rate chemistry combustion model. The combustion model assumes finite-rate chemistry by limiting the chemical reaction rate with flame speed. A comparison of the numerical results with the experimental temperature and species mole fraction clearly showed the superiority of the shear stress transport, K-omega, scale adaptive turbulence model (SSTKWSAS). The model outperforms large eddy simulation (LES) in the primary region of the combustor, probably for two reasons. First, the lower amount of mesh employed in the simulation for the industrial-size combustor does not fit the LES’s explicit mesh size dependency requirement, while it is sufficient for the SSTKWSAS simulation. Second, coupling the finite-rate chemistry method with the SSTKWSAS model provides a more reasonable rate of chemical reaction than that predicted by the fast chemistry method used in LES simulation. Other than comparing with the LES data available in the literature, the SSTKWSAS-predicted result is also compared comprehensively with that obtained from the model based on the unsteady Reynolds-averaged Navier–Stokes (URANS) simulation approach. The superiority of the SSTKWSAS model in resolving large eddies is highlighted. Overall, the present study emphasizes the effectiveness and efficiency of coupling a partially premixed combustion model with a scale-resolving simulation method in predicting a swirl-stabilized, multi-jets turbulent flame in a practical, complex gas turbine combustor configuration.

APA, Harvard, Vancouver, ISO und andere Zitierweisen

26

De Pasquale, Luana, Francesco Tavella, Victor Longo, Marco Favaro, Siglinda Perathoner, Gabriele Centi, Claudio Ampelli und Chiara Genovese. „The Role of Substrate Surface Geometry in the Photo-Electrochemical Behaviour of Supported TiO2 Nanotube Arrays: A Study Using Electrochemical Impedance Spectroscopy (EIS)“. Molecules 28, Nr. 8 (11.04.2023): 3378. http://dx.doi.org/10.3390/molecules28083378.

Der volle Inhalt der Quelle

Annotation:

Highly ordered TiO2 nanotube (NT) arrays grown on Ti mesh and Ti foil were successfully prepared by a controlled anodic oxidation process and tested for water photo-electrolysis. Electrochemical impedance spectroscopy (EIS), combined with other electrochemical techniques (cyclic voltammetry and chronoamperometry) in tests performed in the dark and under illumination conditions, was used to correlate the photoactivity to the specific charge transfer resistances associated with a 3D (mesh) or 2D (foil) geometry of the support. The peculiar structure of the nanotubes in the mesh (with better light absorption and faster electron transport along the nanotubes) strongly impacts the catalytic performances under illumination. H2 production and current density in water photo-electrolysis were over three times higher with the TiO2NTs/Ti mesh, compared to the foil in the same conditions. The results obtained by the EIS technique, used here for the first time to directly compare TiO2 nanotubes on two different supports (Ti foil and Ti mesh), led to a better understanding of the electronic properties of TiO2 nanotubes and the effect of a specific support on its photocatalytic properties.

APA, Harvard, Vancouver, ISO und andere Zitierweisen

27

Khatavkar, Shreelekha N., und Shrikrishna D. Sartale. „Superior supercapacitive performance of grass-like CuO thin films deposited by liquid phase deposition“. New Journal of Chemistry 44, Nr. 17 (2020): 6778–90. http://dx.doi.org/10.1039/c9nj04201f.

Der volle Inhalt der Quelle

Annotation:

First report on deposition and supercapacitive performance of grass-like CuO thin films by liquid phase deposition on flat and mesh stainless steel (SS). The maximum specific capacitances on flat and mesh SS are 552 and 849 F g⁻¹.

APA, Harvard, Vancouver, ISO und andere Zitierweisen

28

Jaura, O., S. C. O. Glover, R. S. Klessen und J.-P. Paardekooper. „sprai: coupling of radiative feedback and primordial chemistry in moving mesh hydrodynamics“. Monthly Notices of the Royal Astronomical Society 475, Nr. 2 (04.01.2018): 2822–34. http://dx.doi.org/10.1093/mnras/stx3356.

Der volle Inhalt der Quelle

APA, Harvard, Vancouver, ISO und andere Zitierweisen

29

Benedek, Zalan, Orsolya Hanko Bauer, Sorin Sorlea, Marius Florin Coros, Tibor Mezei und Rares Georgescu. „Study of Biointegration and Tissue Reaction of Polyethylene Terephtalate 3D and Polypropylene Surgical Meshes in Rat Model“. Materiale Plastice 55, Nr. 2 (30.06.2018): 196–200. http://dx.doi.org/10.37358/mp.18.2.4994.

Der volle Inhalt der Quelle

Annotation:

The aim of this experimental study is to compare the biointegration and tissue response to different surgical mesh types, inserted in various layers of the abdominal wall of Wistar rats. After 30 days, the rats were sacrificed and the meshes were removed en bloc with the subcutaneous tissue, muscular layer and peritoneum. Tissue response (fibrosis, inflammation) was measured using quantitative and semi-quantitative morphometry. We observed that polyethylene terephthalate 3D mesh induces significantly more fibrosis compared to polypropylene mesh and the fibrosis is absent or minimal in case of the control group. Tissue reaction, including fibrosis, is reduced around the polypropylene mesh. We also observed that fibrosis is more intense towards aponeurosis and peritoneum. We can conclude that the 3D mesh shows better biointegration if it is used in proper circumstances. It�s well tolerated by the organism if sutured to the aponeurosis and preferable with monofilament stitches.

APA, Harvard, Vancouver, ISO und andere Zitierweisen

30

Oda, Tetsuya. „A Delaunay Edges and Simulated Annealing-Based Integrated Approach for Mesh Router Placement Optimization in Wireless Mesh Networks“. Sensors 23, Nr. 3 (17.01.2023): 1050. http://dx.doi.org/10.3390/s23031050.

Der volle Inhalt der Quelle

Annotation:

Wireless Mesh Networks (WMNs) can build a communications infrastructure using only routers (called mesh routers), making it possible to form networks over a wide area at low cost. The mesh routers cover clients (called mesh clients), allowing mesh clients to communicate with different nodes. Since the communication performance of WMNs is affected by the position of mesh routers, the communication performance can be improved by optimizing the mesh router placement. In this paper, we present a Coverage Construction Method (CCM) that optimizes mesh router placement. In addition, we propose an integrated optimization approach that combine Simulated Annealing (SA) and Delaunay Edges (DE) in CCM to improve the performance of mesh router placement optimization. The proposed approach can build and provide a communication infrastructure by WMNs in disaster environments. We consider a real scenario for the placement of mesh clients in an evacuation area of Kurashiki City, Japan. From the simulation results, we found that the proposed approach can optimize the placement of mesh routers in order to cover all mesh clients in the evacuation area. Additionally, the DECCM-based SA approach covers more mesh clients than the CCM-based SA approach on average and can improve network connectivity of WMNs.

APA, Harvard, Vancouver, ISO und andere Zitierweisen

31

Thabet, El Ashraf M., Ahmed M. Ali und Ayman Essawy. „A Comparative study of suture fixed versus nonfixed mesh techniques in laparoscopic trans-abdominal preperitoneal repair of noncomplicated adult inguinal hernia“. Egyptian Journal of Surgery 42, Nr. 3 (Juli 2023): 714–20. http://dx.doi.org/10.4103/ejs.ejs_149_23.

Der volle Inhalt der Quelle

Annotation:

Aim This study aimed at comparing the effect of sutured mesh fixation and non-fixation in cases of laparoscopic trans-abdominal preperitoneal (TAPP) in terms of operative time, hospital stay, and complications particularly recurrence and chronic groin pain (CGP). Patients and methods This prospective randomized comparative study included 40 patients diagnosed with noncomplicated inguinal hernias admitted to the Department of Surgery at Fayoum University Hospital, Egypt from March 2019 to July 2021. Cases were divided into two groups by draw of lots; group A as mesh fixation (n=20) and group B as nonfixation (n=20). Results The results were calculated with χ 2test (P value). Results were found to be not significant in demographic features, in-hospital stay, hernia characteristics, and complications i.e. (intraoperative, postoperative, and long term) and were significant as regards operative time and early postoperative pain in favor of nonfixation group and results were highly significant (P < 0.001). Conclusion TAPP repair without mesh fixation shows advantages over mesh fixation, which include significantly less early postoperative inguinal pain and operative time, with comparable intraoperative, postoperative, and long-term complications (with no increase in hernia recurrence), hospital stay, and mean operative time. Hence, our study favors TAPP without mesh fixation a valuable alternative option.

APA, Harvard, Vancouver, ISO und andere Zitierweisen

32

Harman, Melinda, Kevin Champaigne, William Cobb, Xinyue Lu, Varun Chawla, Liying Wei, Igor Luzinov, O. Thompson Mefford und Jiro Nagatomi. „A Novel Bio-Adhesive Mesh System for Medical Implant Applications: In Vivo Assessment in a Rabbit Model“. Gels 9, Nr. 5 (01.05.2023): 372. http://dx.doi.org/10.3390/gels9050372.

Der volle Inhalt der Quelle

Annotation:

Injectable surgical sealants and adhesives, such as biologically derived fibrin gels and synthetic hydrogels, are widely used in medical products. While such products adequately adhere to blood proteins and tissue amines, they have poor adhesion with polymer biomaterials used in medical implants. To address these shortcomings, we developed a novel bio-adhesive mesh system utilizing the combined application of two patented technologies: a bifunctional poloxamine hydrogel adhesive and a surface modification technique that provides a poly-glycidyl methacrylate (PGMA) layer grafted with human serum albumin (HSA) to form a highly adhesive protein surface on polymer biomaterials. Our initial in vitro tests confirmed significantly improved adhesive strength for PGMA/HSA grafted polypropylene mesh fixed with the hydrogel adhesive compared to unmodified mesh. Toward the development of our bio-adhesive mesh system for abdominal hernia repair, we evaluated its surgical utility and in vivo performance in a rabbit model with retromuscular repair mimicking the totally extra-peritoneal surgical technique used in humans. We assessed mesh slippage/contraction using gross assessment and imaging, mesh fixation using tensile mechanical testing, and biocompatibility using histology. Compared to polypropylene mesh fixed with fibrin sealant, our bio-adhesive mesh system exhibited superior fixation without the gross bunching or distortion that was observed in the majority (80%) of the fibrin-fixed polypropylene mesh. This was evidenced by tissue integration within the bio-adhesive mesh pores after 42 days of implantation and adhesive strength sufficient to withstand the physiological forces expected in hernia repair applications. These results support the combined use of PGMA/HSA grafted polypropylene and bifunctional poloxamine hydrogel adhesive for medical implant applications.

APA, Harvard, Vancouver, ISO und andere Zitierweisen

33

Vercelli, Cristina, Giovanni Re, Selina Iussich, Rosangela Odore, Emanuela Maria Morello, Marco Gandini und Gessica Giusto. „In Vivo Evaluation of a Pectin-Honey Hydrogel Coating on Polypropylene Mesh in a Rat Model of Acute Hernia“. Gels 7, Nr. 3 (31.08.2021): 132. http://dx.doi.org/10.3390/gels7030132.

Der volle Inhalt der Quelle

Annotation:

Investigations about ventral hernia repair are focused on improving the quality, resistance, and biocompatibility of mesh. This study compared plain polypropylene mesh with a pectin-honey hydrogel-coated polypropylene mesh in an acute hernia model in rats. Forty Wistar rats, randomly assigned to two groups, were submitted to laparotomy, and a 1 cm × 2 cm fascial defect was created, centered on the midline. Uncoated (group C) or coated mesh (group T) was inserted in an inlay fashion to repair the defect. After 30 days, the rats were euthanized, and the presence of adhesions to the mesh was macroscopically evaluated. Histology and measurement of COX-2 as tissue inflammation markers were used to assess fascia tissue healing. Grades of adhesion were not different between groups. Histological score and COX-2 expression were not significantly different between groups, except for the higher inflammatory response demonstrated in group T. The pectin-hydrogel coated mesh could not reduce adhesion formation compared to uncoated polypropylene mesh but improved peritoneal regeneration and tissue healing.

APA, Harvard, Vancouver, ISO und andere Zitierweisen

34

Fernandez, Daniel M., Justin Kleingartner, Andrew Oliphant, Matthew Bowman, Alicia Torregrosa, Peter S. Weiss-Penzias, Bong June Zhang, Deckard Sorensen, Robert E. Cohen und Gareth H. McKinley. „Fog Water Collection Effectiveness: Mesh Intercomparisons“. Aerosol and Air Quality Research 18, Nr. 1 (2018): 270–83. http://dx.doi.org/10.4209/aaqr.2017.01.0040.

Der volle Inhalt der Quelle

APA, Harvard, Vancouver, ISO und andere Zitierweisen

35

Kuo, Yu-Mei, Wei-Hsiang Chan, Chih-Wei Lin, Sheng-Hsiu Huang und Chih-Chieh Chen. „Characterization of Vibrating Mesh Aerosol Generators“. Aerosol and Air Quality Research 19, Nr. 8 (2019): 1678–87. http://dx.doi.org/10.4209/aaqr.2018.11.0436.

Der volle Inhalt der Quelle

APA, Harvard, Vancouver, ISO und andere Zitierweisen

36

Sanz, Oihane, Ezequiel D. Banús, Aintzane Goya, Haizea Larumbe, Juan José Delgado, Antonio Monzón und Mario Montes. „Stacked wire-mesh monoliths for VOCs combustion: Effect of the mesh-opening in the catalytic performance“. Catalysis Today 296 (November 2017): 76–83. http://dx.doi.org/10.1016/j.cattod.2017.05.054.

Der volle Inhalt der Quelle

APA, Harvard, Vancouver, ISO und andere Zitierweisen

37

Yerliyurt, Kaan, und Sinan Eğri. „Investigation on the Potential Use of Polypropylene Mesh for the Reinforcement of Heat-Polymerized PMMA Denture Base Resin“. Polymers 14, Nr. 16 (12.08.2022): 3300. http://dx.doi.org/10.3390/polym14163300.

Der volle Inhalt der Quelle

Annotation:

The aim of this study was to investigate the potential use of polypropylene (PP) hernia mesh as a reinforcement of PMMA denture base resin in comparison with metal and glass fiber meshes, with the expectation of enhancing the mechanical stability of the PMMA dentures in oral conditions. The control group with no mesh, the aluminum metal mesh (Al) group, the PP1 (PP mesh used on top) group, the PP2 (PP mesh used on both the top and bottom) group, the orthopedic casting tape with self-curing resin (DP0) group, and the flushed form (DPA) group were fabricated in a chromium mold. A total of 144 specimens were divided into three equal portions and subjected to: first, no treatment; second, thermal cycling only; and third, thermal cycling and chewing simulation. The flexural strength, maximum deformation, and flexural modulus were determined by a three-point bending test to compare mechanical properties. Fracture surfaces were evaluated by scanning electron microscopy. The obtained data were statistically analyzed by a two-way ANOVA test with Bonferroni corrections. The non-treated Al mesh reinforcement group exhibited the highest (82.66 ± 6.65 MPa) flexural strength, and the PP2 group treated with chewing simulation displayed the lowest (56.64 ± 4.59 MPa) flexural strength. The Al group showed the highest (7.25 ± 1.05 mm) maximum deformation and the PP2 group showed lowest (3.64 ± 0.28 mm) maximum deformation when both groups were not subjected to any treatment. The control group with no treatment exhibited the lowest (1556.98 ± 270.62 MPa) flexural modulus values, and the Al group with no treatment exhibited the highest (3106.07 ± 588.68 MPa) flexural modulus values. All the mesh groups displayed intact fractures. Any type of mesh used for reinforcement exhibited a significant change in all flexural properties (p < 0.001). The PP1 reinforcement group did not exhibit a significant change in mechanical properties when the effect of treatment was compared. Using PP hernia mesh on top enhanced the mechanical properties despite the weakening when it was used on both the top and bottom. The mechanical stability provided by the PP hernia mesh indicated it to be a promising candidate to be used for reinforcement.

APA, Harvard, Vancouver, ISO und andere Zitierweisen

38

Zhang, Chunfeng, Siguang An, Wei Wang und Dehui Lin. „A Novel Meshing Method Based on Adaptive Size Function and Moving Mesh for Electromagnetic Finite Element Analysis“. Symmetry 13, Nr. 2 (03.02.2021): 254. http://dx.doi.org/10.3390/sym13020254.

Der volle Inhalt der Quelle

Annotation:

A moving meshing algorithm with mesh adaptive size function was proposed in this paper with regard to the modeling speed and solution accuracy of electromagnetic equipment in the optimization design process. In the proposed method, a mesh size function that considers curvature, feature size, and distance gradient restrictions is constructed, which can obtain high quality meshes and avoid excessive iteration; when the finite element mesh domain is deformed, only the mesh nodes close to the moving boundary are allowed to move, and the theory of force-balance is used combined with the second-order boundary projection algorithm to perform iterative optimization of the mesh node positions. The proposed method has the advantages of keeping the original mesh structure and minimum mesh deformation as well as speed up the convergence, save time in the finite element meshing, and ensure the quality of the generated mesh. Then, the proposed method was applied to a 37 kw motor for electromagnetic analysis, and the results obtained proved the accuracy of the algorithm; finally, the effectiveness of the mesh movement algorithm in three-dimensional space was tested by moving the sphere inside the cylinder.

APA, Harvard, Vancouver, ISO und andere Zitierweisen

39

Huang, Jingda, Mengmeng Li, Youwei Lu, Changying Ren, Siqun Wang, Qiang Wu, Qian Li, Wenbiao Zhang und Xianmiao Liu. „A facile preparation of superhydrophobic L-CNC-coated meshes for oil–water separation“. RSC Advances 11, Nr. 23 (2021): 13992–99. http://dx.doi.org/10.1039/d1ra02291a.

Der volle Inhalt der Quelle

APA, Harvard, Vancouver, ISO und andere Zitierweisen

40

Jovic, Vladimir, Borka Jovic, Nevenka Elezovic und Ljiljana Gajic-Krstajic. „Corrected accelerated service life test of electrodeposited NiSn alloys and Ni as cathodes for industrial alkaline water electrolysis“. Journal of the Serbian Chemical Society 84, Nr. 11 (2019): 1271–86. http://dx.doi.org/10.2298/jsc190515074j.

Der volle Inhalt der Quelle

Annotation:

The ?corrected accelerated service life test for hydrogen evolution reaction? (CASLT-HER), designed for application of certain electrode materials as cathodes in the cell for alkaline water electrolysis in 30 % KOH at 80 ?C, was performed at electrodeposited NiSn alloy and Ni 40 mesh electrodes. The Ni 40 mesh was slightly etched, while the NiSn alloy coating was electrodeposited from the bath containing pyrophosphate, glycine, SnCl2 and NiCl2 onto Ni 40 mesh to the thickness of approximately 40 ?m. It is shown that the NiSn cathode possess from maximum 0.77 V to minimum 0.30 V better overpotential than the Ni 40 mesh electrode during the 5 years of their exploitation at the conditions of industrial alkaline water electrolysis. It is also shown that both electrodes should be held at j = ?0.3 A cm-2 for at least 5 h in order to establish stable overpotential response. The limiting overpotential values for applying cyclic voltammetry (CVs, to mimic ?polarity inversion?) should be determined in a separate experiment before the CASLT-HER and should be adjusted during the application of CVs.

APA, Harvard, Vancouver, ISO und andere Zitierweisen

41

Chang, Yijuan, und Zhihui Wu. „Effect of Sandpaper Meshes on the Performance of Tilia Sp. Self-Repairing Coatings“. Polymers 15, Nr. 13 (27.06.2023): 2835. http://dx.doi.org/10.3390/polym15132835.

Der volle Inhalt der Quelle

Annotation:

This study aimed to investigate the impact of different sandpaper sanding meshes on the mechanical and optical properties of microencapsulated Tilia sp. film. An orthogonal experiment revealed that sanding between primers had the most significant effect. Furthermore, an independent experiment implied that increasing the mesh size resulted in decreased surface roughness and decreased color difference, elongation at break, and gloss after liquid resistance. In the aging test, the color difference of the paint film increased with the aging time, and the gloss tended to stabilize. Additionally, the anti-aging gloss of 240 mesh sandpaper used between primers remained relatively stable. The paint film sanded with 240 mesh sandpaper between primers displayed small and regular cracks after temperature and UV aging. Overall, the paint film demonstrated good comprehensive performance when sanded with 240 meshbetween primers, 240 mesh between primer/topcoat, and 1000 mesh for topcoat. Self-repairing microcapsules showed better repair efficacy on the coating. This study provides a technical reference for the development of self-repairing coatings.

APA, Harvard, Vancouver, ISO und andere Zitierweisen

42

Wang, Han, Xingyu Gao und Jun Fang. „Multiple Staggered Mesh Ewald: Boosting the Accuracy of the Smooth Particle Mesh Ewald Method“. Journal of Chemical Theory and Computation 12, Nr. 11 (28.10.2016): 5596–608. http://dx.doi.org/10.1021/acs.jctc.6b00701.

Der volle Inhalt der Quelle

APA, Harvard, Vancouver, ISO und andere Zitierweisen

43

Costan, Victor Vlad, Otilia Boisteanu, Daniel Timofte und Marius Dabija. „The Value of Titanium Mesh in Cranio-Maxillofacial Reconstructive Surgery“. Revista de Chimie 70, Nr. 8 (15.09.2019): 3021–23. http://dx.doi.org/10.37358/rc.19.8.7478.

Der volle Inhalt der Quelle

Annotation:

Cranio-maxillofacial defects are often challenging to reconstruct due to the difficulty of selecting the most appropriate material for the individual case while ensuring good outcomes with minimal complications. The chemical properties of titanium regarding biocompatibility coupled with the physical properties of the mesh design, make titanium mesh an optimal material that is increasingly used in reconstructive surgery. We present our experience regarding the use of titanium mesh for the reconstruction of 14 cranio-maxillofacial bone defects of various etiologies, including 8 defects following oncologic resection, 4 posttraumatic sequelae defects, one osteofascial flap donor site defect and one defect following treatment for osteomyelitis. The advantages and disadvantages of this reconstructive method are discussed.

APA, Harvard, Vancouver, ISO und andere Zitierweisen

44

Miura, Katsuma, Takuya Amezawa, Saburo Tanaka und Masayuki Takashiri. „Improved Heat Dissipation of Dip-Coated Single-Walled Carbon Nanotube/Mesh Sheets with High Flexibility and Free-Standing Strength for Thermoelectric Generators“. Coatings 14, Nr. 1 (18.01.2024): 126. http://dx.doi.org/10.3390/coatings14010126.

Der volle Inhalt der Quelle

Annotation:

Single-walled carbon nanotubes (SWCNTs) are promising thermoelectric materials used in thermoelectric generators (TEGs) to power sensors. However, the limitation of SWCNTs is their high thermal conductivity, which makes it difficult to create a sufficient temperature difference. In this study, we fabricated dip-coated SWCNT/mesh sheets using an SWCNT dispersion. Several types of mesh materials were tested, and the most suitable material was polyphenylene sulfide (PPS). SWCNTs were uniformly deposited on the PPS mesh surface without filling the mesh openings. The SWCNT/PPS mesh sheets exhibited flexibility and free-standing strength. When the edge of the SWCNT/PPS mesh sheets were heated, a higher temperature gradient was produced compared with that of the conventional SWCNT film owing to the increase in heat dissipation. A flexible and free-standing TEG with an area of 1200 mm2, fabricated using SWCNT/PPS mesh sheets, exhibited an output voltage of 31.5 mV and maximum power of 631 nW at a temperature difference of 60 K (Tlow: 320 K). When the TEG was exposed to wind at 3 m/s, temperature difference further increased, and the performance of the TEG increased by a factor of 1.3 for output voltage and 1.6 for maximum power. Therefore, we demonstrated that the TEG’s performance could be improved using SWCNT/PPS mesh sheets.

APA, Harvard, Vancouver, ISO und andere Zitierweisen

45

Wang, Xingxing, Yujie Zhang, Yu Zhu, Shuaishuai Lv, Hongjun Ni, Yelin Deng und Yinnan Yuan. „Effect of Different Hot-Pressing Pressure and Temperature on the Performance of Titanium Mesh-Based MEA for DMFC“. Membranes 12, Nr. 4 (16.04.2022): 431. http://dx.doi.org/10.3390/membranes12040431.

Der volle Inhalt der Quelle

Annotation:

The hot-pressing process of the membrane electrode assembly (MEA) is one of the research hotspots in the field of the fuel cell. To obtain suitable titanium mesh-based MEA hot pressing process parameters, titanium mesh was used as electrode substrate material. The anode and cathode of MEA were prepared by the drip-coated method, and the titanium mesh-based MEA was prepared under different hot-pressing pressure and temperature, respectively. The performance of titanium mesh-based MEA was studied by morphological observation, elemental analysis, thickness measurement, single cell test and numerical fitting analysis. The results demonstrated that: with increasing hot-pressing pressure from 0 MPa to 10 MPa, the forming thickness of titanium mesh-based MEA is getting thin gradually, and the peak power density of titanium mesh-based MEA first increased and then gradually decreased; with increasing hot-pressing temperature from 115 °C to 155 °C, the peak power density of titanium mesh-based MEA enhanced at the beginning and then also gradually decreased. Under the premise of a hot-pressing time of 180 s and the optimal operating temperature of DMFC of 60 °C, the appropriate hot-pressing process conditions of titanium mesh-based MEA are a hot-pressing pressure of 5 MPa and a hot-pressing temperature of 135 °C. The results can provide a technological reference for the preparation of titanium mesh MEA for DMFC.

APA, Harvard, Vancouver, ISO und andere Zitierweisen

46

Khumaeni, Ali, Asep Yoyo Wardaya, Heri Sugito, Nasrullah Idris und Kiichiro Kagawa. „Mesh-Assisted Laser-Induced Plasma Spectroscopy Using Pulse Carbon Dioxide Laser for Analysis of Powder Material by Confining the Powder in a Hole and Employing a Condensation Technique“. Indonesian Journal of Chemistry 19, Nr. 3 (29.05.2019): 606. http://dx.doi.org/10.22146/ijc.34778.

Der volle Inhalt der Quelle

Annotation:

Analysis of impurity in powder samples has been made by using metal-assisted laser-induced plasma spectroscopy utilizing a pulsed CO2 laser. Various powders including food powder, supplement powder, baby powder, and medicine powder were employed as sample materials. Experimentally, the powder sample was tightly put in a hole made on a metal plate and a metal mesh was placed on the powder surface. A pulse CO2 laser (10.6 μm, 1500 mJ) was irradiated on the powder surface passing through the metal mesh. Luminous plasma was induced by mesh just above the mesh when a part of laser energy attacked the mesh. The other part of laser energy impinged the powders and ablated fine particles of powder to the plasma to be atomized and excited. Identification and analysis of elements in powder were successfully conducted. A linear calibration curve of Cu in baby powder has been demonstrated with an intercept zero, certifying that the present technique was a high possibility to be employed for semi-quantitative analysis of elements in powder material. It was proved that by applying the present technique and employing a condensation technique, the detection sensitivity of Cr impurity in the powder sample increased about twenty times compared to the case without condensation. The limit of detection of Cr in rice powder sample was 25 mg/kg. The proposed method was very convenient for the identification and analysis of elements in the powder sample.

APA, Harvard, Vancouver, ISO und andere Zitierweisen

47

Kummer, Matthias, und Jon R. Kirchhoff. „Graphite-coated metal mesh optically transparent electrodes“. Analytical Chemistry 65, Nr. 24 (15.12.1993): 3720–25. http://dx.doi.org/10.1021/ac00072a029.

Der volle Inhalt der Quelle

APA, Harvard, Vancouver, ISO und andere Zitierweisen

48

Mori, Taiki. „Can Nonwoven Tea Bags Be Used to Determine the Tea Bag Index?“ Ecologies 3, Nr. 2 (01.06.2022): 175–82. http://dx.doi.org/10.3390/ecologies3020014.

Der volle Inhalt der Quelle

Annotation:

Researchers have studied the impact of various anthropogenic activities on litter decomposition rates because of their large impact on the future carbon budget and climate change. However, any assessment of the global-scale impact of anthropogenic activity on litter decomposition requires standardized methods that can exclude the variability of litter chemistry. The Tea Bag Index (TBI) is widely used as a standardized method to obtain both the decomposition constant k of early-stage litter decomposition and the stabilization factor S. Recently, a tea bag manufacturer changed the materials and size of the tea bag mesh from a 0.25 mm woven mesh to a nonuniform, nonwoven mesh. To test whether these changes in mesh materials have any effect on the TBI approach, an incubation study was performed. Obtaining time series decomposition data for both green and rooibos teas, two essential assumptions of the TBI approach were examined: (i) that most of the unstabilized hydrolyzable fraction of green tea is decomposed within 90 days (unless the environment is unfavorable for decomposition) and (ii) the S of green tea is equal to that of rooibos tea. The results did not show a clear breakdown of the first assumption of the TBI approach due to the changes in mesh materials, and they did not support the second assumption. The S of rooibos tea determined by fitting an asymptote model to the time series data was significantly larger than the TBI-based S. In conclusion, the TBI may be undeterminable using nonwoven tea bags.

APA, Harvard, Vancouver, ISO und andere Zitierweisen

49

Cerullo, Anna, Gessica Giusto, Lorella Maniscalco, Patrizia Nebbia, Mitzy Mauthe von Degerfeld, Matteo Serpieri, Cristina Vercelli und Marco Gandini. „The Effects of Pectin–Honey Hydrogel in a Contaminated Chronic Hernia Model in Rats“. Gels 9, Nr. 10 (11.10.2023): 811. http://dx.doi.org/10.3390/gels9100811.

Der volle Inhalt der Quelle

Annotation:

Incisional hernia is a frequent complication after abdominal surgery. A previous study on rats evaluated the use of a Pectin–Honey Hydrogel (PHH)-coated polypropylene (PP) mesh for the healing of acute hernias. However, there are no studies investigating the use of PHH in association with PP mesh in chronic contaminated hernia. The aims of this study are to assess the effectiveness of PHH in promoting abdominal hernia repaired with PP mesh and in counteracting infection. Twenty Sprague Dawley male rats were enrolled and a full thickness defect was made in the abdominal wall. The defect was repaired after 28 days using a PP mesh, and a culture medium (Tryptone Soy Broth, Oxoid) was spread onto the mesh to contaminate wounds in both groups. The rats were randomly assigned to a treated or untreated group. In the treated group, a PHH was applied on the mesh before skin closure. At euthanasia—14 days after surgery—macroscopical, microbiological and histopathological evaluations were performed, with a score attributed for signs of inflammation. An immunohistochemical investigation against COX-2 was also performed. Adhesions were more severe (p = 0.0014) and extended (p = 0.0021) in the untreated group. Bacteriological results were not significantly different between groups. Both groups showed moderate to severe values (score > 2) in terms of reparative and inflammatory reactions at histopathological levels. The use of PHH in association with PP mesh could reduce adhesion formation, extension and severity compared to PP mesh alone. No differences in terms of wound healing, contamination and grade of inflammation were reported between groups.

APA, Harvard, Vancouver, ISO und andere Zitierweisen

50

Li, Ziqi, Weitao Liang, Weiping Li, Ze Wang, Liqun Zhu, Haining Chen und Huicong Liu. „Facile fabrication of a Janus mesh for water fluid unidirectional transportation“. RSC Advances 11, Nr. 2 (2021): 1001–11. http://dx.doi.org/10.1039/d0ra08632k.

Der volle Inhalt der Quelle

APA, Harvard, Vancouver, ISO und andere Zitierweisen

Zeitschriftenartikel zum Thema „Chemistry [mesh]“

Geben Sie eine Quelle nach APA, MLA, Chicago, Harvard und anderen Zitierweisen an