scholarly journals Designing Self-Sustainable Icephobic Layer by Introducing a Lubricating Un-Freezable Water Hydrogel from Sodium Polyacrylate on the Polyolefin Surface

Polymers ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 1126
Author(s):  
Junqi Shi ◽  
Chongjian Cao ◽  
Lu Zhang ◽  
Yiwu Quan ◽  
Qingjun Wang ◽  
...  
Keyword(s):  
Cost Effective ◽  
Great Promise ◽  
Sodium Polyacrylate ◽  
One Pot ◽  
Practical Applications ◽  
Freezable Water ◽  
Lubricating Layer ◽  
Cost Effective Method ◽  
Long Time ◽  
Ice Adhesion

A convenient, environment-friendly, and cost-effective method to keep anti-icing for a long time was highly desirable. Slippery lubricant layers were regarded to be effective and promising for anti-icing on different surfaces, but the drought-out of lubricants and the possible detriments to the environment were inevitable. By combining super-high molecular weight sodium polyacrylate (H-PAAS) with polyolefin through a one-pot method, a self-sustainable lubricating layer with extremely low ice adhesion of un-freezable water hydrogel was achieved at subzero conditions. The lubricant hydrogel layer could auto-spread and cover the surface of polyolefin after encountering supercooled water, frost, or ice. Due to the reduction of storage modulus in the interface, the ice adhesion of the specimen surfaces was far below 20 kPa, varying from 5.13 kPa to 18.95 kPa. Furthermore, the surfaces could preserve the fairly low adhesion after icing/de-icing cycles for over 15 times and thus exhibited sustainable durability. More importantly, this method could be introducing to various polymers and is of great promise for practical applications.

One-pot synthesis of a TiO2–CdS nano-heterostructure assembly with enhanced photocatalytic activity

RSC Advances ◽  
2015 ◽  
Vol 5 (44) ◽  
pp. 34942-34948 ◽  
Author(s):  
Sayantan Mazumdar ◽  
Aninda J. Bhattacharyya
Keyword(s):  
Titanium Dioxide ◽  
Photocatalytic Activity ◽  
Cadmium Sulfide ◽  
Self Assembly ◽  
Cost Effective ◽  
One Pot ◽  
One Pot Synthesis ◽  
Cost Effective Method

An unprecedented morphology of a titanium dioxide (TiO2) and cadmium sulfide (CdS) self-assembly obtained using a ‘truly’ one-pot and highly cost effective method with a multi-gram scale yield is reported here.

scholarly journals Biosynthesis and Potential Applications of Silver and Gold Nanoparticles and Their Chitosan-Based Nanocomposites in Nanomedicine

2018 ◽  
Vol 2018 ◽  
pp. 1-13 ◽  
Author(s):  
Haliza Katas ◽  
Noor Zianah Moden ◽  
Chei Sin Lim ◽  
Terence Celesistinus ◽  
Jie Yee Chan ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Metallic Nanoparticles ◽  
Cost Effective ◽  
One Pot ◽  
Silver And Gold Nanoparticles ◽  
Stabilizing Agents ◽  
Cost Effective Method ◽  
Multistep Process ◽  
Potential Applications ◽  
Biological Sources

Biosynthesized or biogenic metallic nanoparticles, particularly silver and gold nanoparticles (AgNPs and AuNPs, respectively), have been increasingly used because of their advantages, including high stability and loading capacity; moreover, these nanoparticles are synthesized using a green and cost-effective method. Previous studies have investigated reducing and/or stabilizing agents from various biological sources, including plants, microorganisms, and marine-derived products, using either a one-pot or a multistep process at different conditions. In addition, extensive studies have been performed to determine the biological or pharmacological effects of these nanoparticles, such as antimicrobial, antitumor, anti-inflammatory, and antioxidant effects. In the recent years, chitosan, a natural cationic polysaccharide, has been increasingly investigated as a reducing and/or stabilizing agent in the synthesis of biogenic metallic nanoparticles with potential applications in nanomedicine. Here, we have reviewed the mechanism of biosynthesis and potential applications of AgNPs and AuNPs and their chitosan-mediated nanocomposites in nanomedicine.

scholarly journals Gerybinių stemplės anastomozės striktūrų gydymas

2008 ◽  
Vol 6 (3) ◽  
pp. 0-0
Author(s):  
Eugenijus Stratilovas ◽  
Egidijus Sangaila
Keyword(s):  
Cost Effective ◽  
Late Complications ◽  
Esophageal Surgery ◽  
Treatment Modalities ◽  
Simple Mode ◽  
Key Words Esophageal Cancer ◽  
Cost Effective Method ◽  
Long Time ◽  
Benign Stenosis

Eugenijus Stratilovas,  Egidijus SangailaVilniaus universiteto Onkologijos instituto Bendrosios ir abdominalinės chirurgijosir onkologijos skyrius, Santariškių g. 1, LT-08660 VilniusEl paštas: [email protected] Įvadas Viena iš dažniausiai pasitaikančių vėlyvųjų komplikacijų po stemplės rezekcinio pobūdžio operacijų yra gerybinė anastomozės striktūra. Dėl striktūros išsivysčiusi disfagija ilgam pablogina ligonio gyvenimo kokybę. Pagrindiniai šios komplikacijos gydymo metodai išlieka dažnos endoskopijos, dilatacijos bužais sukėlus nejautrą. Autoriai siūlo taikyti gana paprastą šių striktūrų gydymo metodą – dilataciją Folley kateteriu. Rezultatai Šiuo būdu gydyti keturi pacientai. Visi procedūrą pakėlė gerai, gydymo komplikacijų nebuvo. Po dviejų procedūrų rijimas tapo normalus, toliau procedūros tęstos ambulatoriškai, praėjus 3 mėn. rijimas išliko normalus. Išvada Anastomozės striktūros dilatacija Folley kateteriu yra saugus, veiksmingas ir pigus metodas. Reikšminiai žodžiai: stemplės vėžys, anastomozės striktūra, dilatacija The treatment of the benign esophagus anastomosis strictures Eugenijus Stratilovas,  Egidijus SangailaVilnius University, Institute of Oncology, Department of Generaland Abdominal Surgery and Oncology, Santariškių str. 1, LT-08660 Vilnius, LithuaniaE-mail: [email protected] Background One of the most frequent late complications after the resectable type of esophageal surgery is benign anastomosis stricture. The subsequent dysphagia worsens the patients’ quality of life for a long time. The main treatment modalities for this complication remain frequent endoscopy, dilatation using weighted bougies under anesthesia. Authors recommend use a simple mode of treatment – dilatation with the Folley catheter. Results Four patients underwent the treatment. All patients felt well, there were no treatment complications. Swallowing after two procedures became normal, the treatment was continued in outpatient clinic; after three months the swallowing was good. Conclusions Dilatation of a stricture with the Folley catheter is a safe and cost-effective method. Key words: esophageal cancer, anastomosis benign stenosis, dilatation

Catalyst-free and environment friendly synthesis of 2-aryl-3-substituted-4-thiazolidinones in water

RSC Advances ◽  
2016 ◽  
Vol 6 (34) ◽  
pp. 28619-28623 ◽  
Author(s):  
Manoj P. Thakare ◽  
Rahimullah Shaikh ◽  
Dipak Tayade
Keyword(s):  
Cost Effective ◽  
One Pot ◽  
Environment Friendly ◽  
Catalyst Free ◽  
One Pot Synthesis ◽  
Cost Effective Method

A simple, efficient, eco-friendly, and cost-effective method has been developed for the three component one pot synthesis of 2-aryl-3-substituted-4-thiazolidinones is described.

scholarly journals An Overview of the Photocatalytic Water Splitting over Suspended Particles

Catalysts ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 60
Author(s):  
Muhammad Amtiaz Nadeem ◽  
Mohd Adnan Khan ◽  
Ahmed Abdeslam Ziani ◽  
Hicham Idriss
Keyword(s):  
Water Splitting ◽  
Large Scale ◽  
Cost Effective ◽  
Synthetic Methods ◽  
Scale Production ◽  
Practical Applications ◽  
Co Catalysts ◽  
Large Scale Production ◽  
Cost Effective Method ◽  
Order Of Magnitude

The conversion of solar to chemical energy is one of the central processes considered in the emerging renewable energy economy. Hydrogen production from water splitting over particulate semiconductor catalysts has often been proposed as a simple and a cost-effective method for large-scale production. In this review, we summarize the basic concepts of the overall water splitting (in the absence of sacrificial agents) using particulate photocatalysts, with a focus on their synthetic methods and the role of the so-called “co-catalysts”. Then, a focus is then given on improving light absorption in which the Z-scheme concept and the overall system efficiency are discussed. A section on reactor design and cost of the overall technology is given, where the possibility of the different technologies to be deployed at a commercial scale and the considerable challenges ahead are discussed. To date, the highest reported efficiency of any of these systems is at least one order of magnitude lower than that deserving consideration for practical applications.

scholarly journals Ultra-Small Fatty Acid-Stabilized Magnetite Nanocolloids Synthesized byIn SituHydrolytic Precipitation

2015 ◽  
Vol 2015 ◽  
pp. 1-11 ◽  
Author(s):  
Kheireddine El-Boubbou ◽  
Rabih O. Al-Kaysi ◽  
Muhanna K. Al-Muhanna ◽  
Hassan M. Bahhari ◽  
Abdulaziz I. Al-Romaeh ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Targeted Delivery ◽  
Large Scale ◽  
Colloidal Stability ◽  
Elevated Temperatures ◽  
Metal Oxide Nanoparticles ◽  
Cost Effective ◽  
Water Soluble ◽  
Great Promise ◽  
One Pot

Simple, fast, large-scale, and cost-effective preparation of uniform controlled magnetic nanoparticles remains a major hurdle on the way towards magnetically targeted applications at realistic technical conditions. Herein, we present a unique one-pot approach that relies on simple basic hydrolyticin situcoprecipitation of inexpensive metal salts (Fe2+and Fe3+) compartmentalized by stabilizing fatty acids and aided by the presence of alkylamines. The synthesis was performed at relatively low temperatures (~80°C) without the use of high-boiling point solvents and elevated temperatures. This method allowed for the production of ultra-small, colloidal, and hydrophobically stabilized magnetite metal oxide nanoparticles readily dispersed in organic solvents. The results reveal that the obtained magnetite nanoparticles exhibit narrow size distributions, good monodispersities, high saturation magnetizations, and excellent colloidal stabilities. When the [fatty acid] : [Fe] ratio was varied, control over nanoparticle diameters within the range of 2–10 nm was achieved. The amount of fatty acid and alkylamine used during the reaction proved critical in governing morphology, dispersity, uniformity, and colloidal stability. Upon exchange with water-soluble polymers, the ultra-small sized particles become biologically relevant, with great promise for theranostic applications as imaging and magnetically targeted delivery vehicles.

scholarly journals A Passive Anti-icing Strategy Based on a Superhydrophobic Mesh with Extremely Low Ice Adhesion Strength

2021 ◽  
Vol 18 (1) ◽  
pp. 55-64
Author(s):  
Peng Wang ◽  
Ziqiang Li ◽  
Qing Xie ◽  
Wei Duan ◽  
Xinchun Zhang ◽  
...  
Keyword(s):  
Stress Concentration ◽  
Adhesion Strength ◽  
Interfacial Crack ◽  
Mesh Size ◽  
Cost Effective ◽  
Area Fraction ◽  
Freezing Time ◽  
Cost Effective Method ◽  
Embedded Structure ◽  
Ice Adhesion

AbstractAlthough superhydrophobic materials have attracted much research interest in anti-icing, some controversy still exists. In this research, we report a cost-effective method used to verify the contribution of area fraction to ice adhesion strength. We tried to partially-embed silica nanoparticles into microscale fabrics of a commercial polyamide mesh. Then, the area fraction could be determined by altering the mesh size. Generally, the ice adhesion strength decreases as the area fraction decreases. An ice adhesion strength of ∼1.9 kPa and a delayed freezing time of ∼1048 s can be obtained. We attribute the low ice adhesion strength to the combination of superhydrophobicity and stress concentration. The superhydrophobicity prohibits the water from penetrating into the voids of the meshes, and the small actual contact area leads to stress concentration which promotes interfacial crack propagation. Moreover, our superhydrophobic mesh simultaneously exhibits a micro-nano hierarchical structure and a partially-embedded structure. Therefore, the as-prepared superhydrophobic mesh retained the icephobicity after 20 icing/deicing cycles, and maintained its superhydrophobicity even after 60 sandpaper-abrasion cycles and a 220 °C thermal treatment.

Facile one-pot synthesis of sugar–thiazolidinone derivatives

2011 ◽  
Vol 89 (11) ◽  
pp. 1382-1386 ◽  
Author(s):  
Ali Darehkordi ◽  
Kazem Saidi ◽  
Somayeh Ghazi
Keyword(s):  
Microwave Irradiation ◽  
Ambient Temperature ◽  
Cost Effective ◽  
Solvent Free ◽  
One Pot ◽  
One Pot Synthesis ◽  
Cost Effective Method ◽  
Solvent Free Conditions ◽  
High Yields

A simple, efficient, and cost-effective method for the synthesis of a series of sugar–thiazolidinone derivatives by a one-pot reaction of the corresponding thiosemicarbazone of d-galactose, d-glucose, and d-mannose compounds in the presence of dimethyl or diethyl acetylenedicarboxylate is described. Two different methods were used and high yields were obtained in both cases: (A) in EtOAC–H2O at an ambient temperature and (B) microwave irradiation under solvent-free conditions.

scholarly journals Application of Structure from Mortion in Japanese Archaeology

2015 ◽  
Vol XL-5/W7 ◽  
pp. 235-239 ◽  
Author(s):  
A. Kaneda ◽  
Y.A. Nawabi ◽  
H. Yamaguchi
Keyword(s):  
Cost Effective ◽  
Archaeological Site ◽  
3 Dimensional ◽  
Archaeological Data ◽  
Cost Effective Method ◽  
Complicated Form ◽  
Long Time ◽  
Aerial Vehicle ◽  
The One ◽  
The Cost

In Japan, archaeological excavations carry out over fifty thousand times per year. Nowadays, archaeological data is accumulated day by day. To record these documentation about archaeological data, it is desirable to the documentation of their shape in 3-dimensional form. Structure from Motion (SfM) is the one of the cost effective method to record the 3D documentation. This paper introduces application of SfM technology to examine the validity of an archaeological documentation in Japanese archaeology in recent year. Whenever, a complicated form finding has to be recorded at an archaeological excavation. It often requires a long time to create by a traditional manual drawing. For example, a well made of reuse roof tiles, garden stones and stone chamber. By using SfM, the time spent working at the archaeological site was greatly reduced. And many platforms to take an image at the variety of archaeological site's condition, like a small UAV (Unmanned Aerial Vehicle) are tested using for wider area recording. These methods are used in disaster stricken areas in East Japan.

One-pot controllable synthesis of CoFe2O4solid, hollow and multi-shell hollow nanospheres as superior anode materials for lithium ion batteries

2017 ◽  
Vol 5 (41) ◽  
pp. 21994-22003 ◽  
Author(s):  
Yun Qi ◽  
Bingqiu Liu ◽  
Lingyu Zhang ◽  
Yuqiu Huo ◽  
Lu Li ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Materials ◽  
Large Scale ◽  
Lithium Ion ◽  
Cost Effective ◽  
Hollow Nanospheres ◽  
Controllable Synthesis ◽  
One Pot ◽  
Cost Effective Method ◽  
First Time

CFO-SNSs, CFO-HNSs and MS-CFO-HNSs are controllably fabricated for the first time by a straightforward and cost-effective method on a large scale as superior anode materials for lithium ion batteries.

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