Removing the superfluous: a supported squaramide catalyst with a minimalistic linker applied to the enantioselective flow synthesis of pyranonaphthoquinones

2016 ◽  
Vol 6 (13) ◽  
pp. 4686-4689 ◽  
Author(s):  
Laura Osorio-Planes ◽  
Carles Rodríguez-Escrich ◽  
Miquel A. Pericàs
Keyword(s):  
Cost Effective ◽  
Step Process ◽  
Flow Synthesis ◽  
Flow Through

A new, cost-effective polystyrene-supported squaramide organocatalyst has been shown to mediate the highly enantioselective formation of pyranonaphthoquinones in flow through a sequential two-step process.

scholarly journals Detection of Food Spoilage and Pathogenic Bacteria Based on Ligation Detection Reaction Coupled to Flow-Through Hybridization on Membranes

2014 ◽  
Vol 2014 ◽  
pp. 1-11 ◽  
Author(s):  
K. Böhme ◽  
P. Cremonesi ◽  
M. Severgnini ◽  
Tomás G. Villa ◽  
I. C. Fernández-No ◽  
...  
Keyword(s):  
Pathogenic Bacteria ◽  
Bacterial Species ◽  
Cost Effective ◽  
Rrna Gene ◽  
Bacterial Identification ◽  
Dot Blot ◽  
Culture Collections ◽  
Ligation Detection Reaction ◽  
Flow Through ◽  
Food Safety And Quality

Traditional culturing methods are still commonly applied for bacterial identification in the food control sector, despite being time and labor intensive. Microarray technologies represent an interesting alternative. However, they require higher costs and technical expertise, making them still inappropriate for microbial routine analysis. The present study describes the development of an efficient method for bacterial identification based on flow-through reverse dot-blot (FT-RDB) hybridization on membranes, coupled to the high specific ligation detection reaction (LDR). First, the methodology was optimized by testing different types of ligase enzymes, labeling, and membranes. Furthermore, specific oligonucleotide probes were designed based on the 16S rRNA gene, using the bioinformatic tool Oligonucleotide Retrieving for Molecular Applications (ORMA). Four probes were selected and synthesized, being specific forAeromonasspp.,Pseudomonasspp.,Shewanellaspp., andMorganella morganii, respectively. For the validation of the probes, 16 reference strains from type culture collections were tested by LDR and FT-RDB hybridization using universal arrays spotted onto membranes. In conclusion, the described methodology could be applied for the rapid, accurate, and cost-effective identification of bacterial species, exhibiting special relevance in food safety and quality.

Electroosmotic Flow Through Porous Materials

2014 ◽  
Author(s):  
Rakesh Saini ◽  
Matthew Kenny ◽  
Dominik P. J. Barz
Keyword(s):  
Porous Materials ◽  
Electroosmotic Flow ◽  
Capillary Flow ◽  
Cost Effective ◽  
Packed Bed ◽  
Flow Rates ◽  
Bed Porosity ◽  
Flow Through ◽  
Set Up ◽  
Air Liquid Interface

Electroosmotic flow can be employed in many microfluidic systems. Especially, highly porous materials are suitable since they generate significant flow rates and pressures. In the current research, we employ electroosmosis experiments using a relatively simple and cost-effective set-up including different sets of sintered packed beds of borosilicate micro spheres having a wider range of porosities. Various experiments are performed with varying applied electric field, and packed bed porosity. The flow rates are measured by tracking the air/liquid interface in a capillary which is connected to the packed bed. A mathematical model of the setup reveals the influence of the capillary flow on the flow rate of the electroosmotic flow.

scholarly journals Cost-effective modified endoscopic vacuum therapy for the treatment of gastrointestinal transmural defects: step-by-step process of manufacturing and its advantages

VideoGIE ◽  
2021 ◽  
Author(s):  
Diogo Turiani Hourneaux de Moura ◽  
Bruno Salomão Hirsch ◽  
Epifânio Silvino Do Monte Junior ◽  
Thomas R. McCarty ◽  
Flaubert Sena de Medeiros ◽  
...  
Keyword(s):  
Cost Effective ◽  
Vacuum Therapy ◽  
Step Process ◽  
Endoscopic Vacuum Therapy

UV-photodetector based on heterostructured ZnO/(Ga,Ag)-co-doped ZnO nanorods by cost-effective two-step process

2020 ◽  
Vol 509 ◽  
pp. 144770 ◽  
Author(s):  
A. GuruSampath Kumar ◽  
Xuejin Li ◽  
Yu Du ◽  
Youfu Geng ◽  
Xueming Hong
Keyword(s):  
Zno Nanorods ◽  
Cost Effective ◽  
Uv Photodetector ◽  
Step Process ◽  
Doped Zno ◽  
Co Doped

scholarly journals 3D printed reactor-in-a-centrifuge (RIAC): making flow-synthesis of nanoparticles pump-free and cost-effective

2021 ◽  
pp. 130656
Author(s):  
Domenico Andrea Cristaldi ◽  
Alessio Labanca ◽  
Tomas Donal Pottinger ◽  
Joshua Owen ◽  
Eugen Stulz ◽  
...  
Keyword(s):  
Cost Effective ◽  
Flow Synthesis ◽  
Synthesis Of Nanoparticles ◽  
3D Printed

scholarly journals Low Cost Design of Automated Drip Irrigation System with GSM

2019 ◽  
Vol 8 (4) ◽  
pp. 8077-8082
Keyword(s):  
Control System ◽  
Drip Irrigation ◽  
Irrigation System ◽  
Low Cost ◽  
Cost Effective ◽  
Effective Control ◽  
Irrigation Technology ◽  
Flow Through ◽  
Irrigation Control ◽  
Fail Safe

This paper is about an automatic irrigation control system which is cost effective and can be used for irrigation by a farmer. Today’s industrial automation and controlling of machine is high in cost and not suitable for a farming field. So, here we design a smart drip irrigation technology with effective control system in low cost. The voltage monitoring unit informs the farmer about the power supply conditions on the field. The aim of this study, is to control the motor automatically, and decide the direction of the water flow through valves, based on the inputs from the farmer and also with the collective inputs from the sensors, which finally notify instantly about the happenings and conditions of the field. It operates under low hardware cost by distributing irrigation to crops by elevation change and gravity. The soil moisture and amount of flow of water in each sector are major consideration to design a fail-safe system for a variety of crops planted at a time.

Cost-Effective Flow-Through Reactor in Electro-Fenton

2017 ◽  
pp. 241-261
Author(s):  
Minghua Zhou ◽  
Gengbo Ren ◽  
Liang Ma ◽  
Yinqiao Zhang ◽  
Sijin Zuo
Keyword(s):  
Cost Effective ◽  
Flow Through

A Municipality Water Reticulation Ground-Coupled Reversible Heat Pump System as an Alternative to an Air Source System

1997 ◽  
Author(s):  
S. Oerder ◽  
J. P. Meyer
Keyword(s):  
Heat Pump ◽  
Cooling System ◽  
Cost Effective ◽  
Analytical Models ◽  
Pump System ◽  
Heat Pump System ◽  
Heating And Cooling ◽  
Ground Source ◽  
Cost Effective Alternative ◽  
Flow Through

A municipality water reticulation R22 ground-coupled reversible heat pump, was investigated as an alternative to conventional air source systems. The study covers the testing of a heating and cooling system that utilises the ground as its source. The ground source comprises of a municipality water supply line that is modified to allow water to flow through the outdoor coil thus delivering or extracting heat from the system. The investigation was conducted by developing analytical models that were used for the design of a ground-coupled reversible heat pump and a conventional, also reversible air-to-air system. The models were verified with a commercially available computer program as well as with measurements on the two systems. The results show an overall increase in performance with the use of a ground source system over the conventional air source systems. Thus the ground-coupled reversible heat pump system can provide a cost effective alternative to the more conventional air-to-air systems.

Flow Characterization of Microfluidic Paper-Based Analytical Devices With Hollow Channels

2019 ◽  
Author(s):  
Haipeng Zhang ◽  
Danielle Barmore ◽  
Sangjin Ryu
Keyword(s):  
Liquid Flow ◽  
Pressure Difference ◽  
Point Of Care ◽  
Applied Pressure ◽  
Flow Characteristics ◽  
Cost Effective ◽  
Theoretical Models ◽  
Flow Speed ◽  
Liquid Sample ◽  
Flow Through

Abstract Microfluidic paper-based analytical devices (μPADs) are cost-effective point-of-care diagnostic devices. μPADs consist of porous filter paper patterned with hydrophobic solid ink barriers to create flow channels. Because a liquid sample flows through the paper channel driven by capillary force, the resultant flow is usually slow. To overcome this limitation, a hollow channel can be added to a μPAD to increase the flow speed significantly. The liquid flow through the hollow channel is known to be driven by a pressure difference between the inlet and outlet of the device. Accordingly, theoretical models have been proposed to understand and predict flow characteristics of μPADs with hollow channels. The goal of this study is to experimentally characterize liquid flow through μPADs having a hollow channel, by investigating relationships among the travel distance of the liquid front through the μPADs, the applied pressure difference, and the dimension of the hollow channel. Thus, the outcome of this study would contribute to validating the theoretical models and enable better control of liquid sample flow in μPADs with hollow channels.

scholarly journals Facile Synthesis of Visible Light-Induced g-C3N4/Rectorite Composite for Efficient Photodegradation of Ciprofloxacin

Materials ◽  
2018 ◽  
Vol 11 (12) ◽  
pp. 2452 ◽  
Author(s):  
Zhiming Sun ◽  
Xiangwei Zhang ◽  
Rui Zhu ◽  
Xiongbo Dong ◽  
Jie Xu ◽  
...  
Keyword(s):  
Visible Light ◽  
Adsorption Capacity ◽  
Cost Effective ◽  
Degradation Pathways ◽  
Facile Synthesis ◽  
Promising Alternative ◽  
Step Process ◽  
Alternative Material ◽  
Prepared Composite ◽  
By Products

A novel kind of g-C3N4/rectorite composite with high visible-light photoactivity was developed via a mild and cost effective two-step process. Ciprofloxacin (CIP), a typical antibiotic, was applied to evaluate the photoactivity of the received catalysts. Furthermore, the by-products of CIP photodegradation were analyzed and the possible degradation pathways were also discussed. Compared with bare photocatalysts, the received composite possessed well reusability and higher photoactivity towards CIP. According to the characterization analysis results, layered g-C3N4 was successfully immobilized on layered rectorite, which could not only promote its adsorption capacity but also provide more reactive sites for CIP adsorption and photodegradation. Compared with bare g-C3N4, the photoactivity of the prepared composite was significantly enhanced. The enhancement should be mainly due to the lower recombination rate of photogenerated carriers and the improved adsorption capacity toward CIP. This study demonstrated that the obtained g-C3N4/rectorite composite should be a promising alternative material in wastewater treatment.

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