Current application of algae derivatives for bioplastic production: A review

2022 ◽  
pp. 126698
Author(s):  
Bao-Trong Dang ◽  
Xuan-Thanh Bui ◽  
Duyen P.H. Tran ◽  
Huu Hao Ngo ◽  
Long D. Nghiem ◽  
...  
Keyword(s):  
Current Application

The Potential of Milk-derived Exosomes for Drug Delivery

2020 ◽  
Vol 17 ◽  
Author(s):  
Shuyuan Li ◽  
Yue Tang ◽  
Yushun Dou
Keyword(s):  
Drug Delivery ◽  
Oral Delivery ◽  
Therapeutic Potential ◽  
Current Knowledge ◽  
Biological Fluids ◽  
Drug Loading ◽  
Drug Carriers ◽  
Current Application ◽  
Therapeutic Benefits ◽  
Loading Methods

Background: Exosomes, one of the extracellular vesicles, are widely present in all biological fluids and play an important role in intercellular communication. Because of its hydrophobic lipid bilayer and aqueous hydrophilic core structure, it is considered a possible alternative to liposome drug delivery systems. Not only do they protect the cargo like liposomes during delivery, they are less toxic and better tolerated. However, due to the lack of sources and methods for obtaining enough exosomes, the therapeutic application of exosomes as drug carriers is limited. Methods: A literature search was performed using the ScienceDirect and PubMed electronic databases to obtain information from published literature on milk exosomes related to drug delivery. Results: Here, we briefly reviewed the current knowledge of exosomes, expounded the advantages of milk-derived exosomes over other delivery vectors, including a higher yield, the oral delivery characteristic and additional therapeutic benefits. The purification and drug loading methods of milk exosomes, and the current application of milk exosomes were also introduced. Conclusion: The emergence of milk-derived exosomes is expected to break through the limitations of exosomes as therapeutic carriers of drugs. We hope to raise awareness of the therapeutic potential of milk-derived exosomes as a new drug delivery system.

Patent-information investigation in the field of photogrammetry

2019 ◽  
Vol 951 (9) ◽  
pp. 25-39
Author(s):  
V.V. Zabavnikov ◽  
A.N. Kobiakov ◽  
S.V. Kovalev
Keyword(s):  
Technology Development ◽  
Temporal Dynamics ◽  
Statistical Processing ◽  
Current Application ◽  
Patent Classification ◽  
Patent Information ◽  
Inventive Activity ◽  
Patent Documents ◽  
Object Of Study ◽  
Technical Solutions

Informational and analytical studying patent documentation shows the patenting situation either in general in a specific technological area or the patent activity of innovation entities, taking temporal dynamics and the territorial basis into account. Patent-information investigation was carried out in order to get acquainted with the level of photogrammetry technology development and determine its current application areas. Statistical and intellectual patent document text analysis was the basis for relevant data array grouped in 8680 patent families’ creation. The prepared report contains a graphical display of selected patent documents array, related to research topic, analytical and statistical processing. The level of inventive activity was assessed; the world patenting dynamics and location in this technical field were considered. The main groups on the International Patent Classification, as well as the main technological directions, where technical solutions related to the object of study to be patented, are identified. Information on the leading applicants/ patent holders in this technical field is provided; the list of the most cited patent documents is considered.

Linear electrical properties of striated muscle fibres observed with intracellular electrodes

1964 ◽  
Vol 160 (978) ◽  
pp. 69-123 ◽  
Keyword(s):  
Electrical Properties ◽  
Striated Muscle ◽  
Surface Membrane ◽  
Fibre Surface ◽  
Step Function ◽  
Muscle Fibres ◽  
Appreciable Effect ◽  
Current Application ◽  
Current Path ◽  
Wide Range

The linear electrical properties of muscle fibres have been examined using intracellular electrodes for a. c. measurements and analyzing observations on the basis of cable theory. The measurements have covered the frequency range 1 c/s to 10 kc/s. Comparison of the theory for the circular cylindrical fibre with that for the ideal, one-dimensional cable indicates that, under the conditions of the experiments, no serious error would be introduced in the analysis by the geometrical idealization. The impedance locus for frog sartorius and crayfish limb muscle fibres deviates over a wide range of frequencies from that expected for a simple model in which the current path between the inside and the outside of the fibre consists only of a resistance and a capacitance in parallel. A good fit of the experimental results on frog fibres is obtained if the inside-outside admittance is considered to contain, in addition to the parallel elements R m = 3100 Ωcm 2 and C m = 2.6 μF/cm 2 , another path composed of a resistance R e = 330 Ωcm 2 in series with a capacitance C e = 4.1 μF/cm 2 , all referred to unit area of fibre surface. The impedance behaviour of crayfish fibres can be described by a similar model, the corresponding values being R m = 680 Ωcm 2 , C m = 3.9 μF/cm 2 , R e = 35 Ωcm 2 , C e = 17 μF/cm 2 . The response of frog fibres to a step-function current (with the points of voltage recording and current application close together) has been analyzed in terms of the above two-time constant model, and it is shown that neglecting the series resistance would have an appreciable effect on the agreement between theory and experiment only at times less than the halftime of rise of the response. The elements R m and C m are presumed to represent properties of the surface membrane of the fibre. R e and C e are thought to arise not at the surface, but to be indicative of a separate current path from the myoplasm through an intracellular system of channels to the exterior. In the case of crayfish fibres, it is possible that R e (when referred to unit volume) would be a measure of the resistivity of the interior of the channels, and C e the capacitance across the walls of the channels. In the case of frog fibres, it is suggested that the elements R e , C e arise from the properties of adjacent membranes of the triads in the sarcoplasmic reticulum . The possibility is considered that the potential difference across the capacitance C e may control the initiation of contraction.

Nanobiotechnology: Nature-inspired silver nanoparticles towards green synthesis

2021 ◽  
pp. 0958305X2198988
Author(s):  
Nur Syakirah Rabiha Rosman ◽  
Noor Aniza Harun ◽  
Izwandy Idris ◽  
Wan Iryani Wan Ismail
Keyword(s):  
Electrical Conductivity ◽  
Silver Nanoparticles ◽  
Green Synthesis ◽  
Metal Nanoparticles ◽  
Current Trend ◽  
Biological Properties ◽  
Noble Metal Nanoparticles ◽  
Current Application ◽  
Physical Chemical ◽  
Physical And Chemical

The emergence of technology to produce nanoparticles (1 nm – 100 nm in size) has drawn significant researchers’ interests. Nanoparticles can boost the antimicrobial, catalytic, optical, and electrical conductivity properties, which cannot be achieved by their corresponding bulk. Among other noble metal nanoparticles, silver nanoparticles (AgNPs) have attained a special emphasis in the industry due to their superior physical, chemical, and biological properties, closely linked to their shapes, sizes, and morphologies. Proper knowledge of these NPs is essential to maximise the potential of biosynthesised AgNPs in various applications while mitigating risks to humans and the environment. This paper aims to critically review the global consumption of AgNPs and compare the AgNPs synthesis between conventional methods (physical and chemical) and current trend method (biological). Related work, advantages, and drawbacks are also highlighted. Pertinently, this review extensively discusses the current application of AgNPs in various fields. Lastly, the challenges and prospects of biosynthesised AgNPs, including application safety, oxidation, and stability, commercialisation, and sustainability of resources towards a green environment, were discussed.

scholarly journals Heart Rate Variability Monitoring during Interferential Current Application in the Lower Back Area: A Cross-Sectional Study

2021 ◽  
Vol 18 (7) ◽  
pp. 3394
Author(s):  
Blanca De-la-Cruz-Torres ◽  
Eva Martínez-Jiménez ◽  
Emmanuel Navarro-Flores ◽  
Patricia Palomo-López ◽  
Vanesa Abuín-Porras ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Placebo Group ◽  
Intervention Group ◽  
Lumbar Pain ◽  
Poincaré Plot ◽  
Current Application ◽  
Cross Sectional ◽  
Vasovagal Reactions ◽  
Interferential Current

Vasovagal reactions may occur occasionally during electrical stimulation using interferential current (IFC). The purpose of this study was to examine variations in autonomic activity during the application of IFC in asymptomatic participants by analysis of their heart rate variability (HRV). Seventy-three male volunteers were randomly assigned to a placebo group (n = 36; HRV was documented for 10 min, both at rest and during a placebo intervention) and an intervention group (n = 37; HRV was documented for 10 min in two conditions labelled as (1) rest and (2) application of IFC technique on the lumbar segment). The diameters of the Poincaré plot (SD1, SD2), stress score (SS), and the ratio between sympathetic and parasympathetic activity (S/PS) were measured. After interventions, differences amongst the placebo group and the IFC group were found in SD2 (p < 0.001), SS (p = 0.01) and S/PS ratio (p = 0.003). The IFC technique was associated with increased parasympathetic modulation, which could induce a vasovagal reaction. Monitorization of adverse reactions should be implemented during the application of IFC technique. HRV indicators might have a part in prevention of vasovagal reactions. Further studies in patients with lumbar pain are needed to explore possible differences in HRV responses due to the presence of chronic pain.

scholarly journals Application of Multi-Actor Multi-Criteria Analysis for Transition Management in Energy Communities

2021 ◽  
Vol 13 (4) ◽  
pp. 1783
Author(s):  
Maria Luisa Lode ◽  
Geert te Boveldt ◽  
Cathy Macharis ◽  
Thierry Coosemans
Keyword(s):  
Social Representation ◽  
Added Value ◽  
Final Decision ◽  
Transition Management ◽  
Low Carbon ◽  
Current Application ◽  
Low Carbon Economy ◽  
Multi Criteria Analysis ◽  
Multi Stakeholder ◽  
The Impact

Energy communities (ECs) play a role in the transition towards a low-carbon economy by 2050 and receive increasing attention from stakeholders within the energy sector. To foster ECs, transition management (TM) is a promising managerial approach to steer and guide the transition towards more sustainable practices. However, TM lacks a consistent methodology that addresses the criticism of the current application. To investigate what a structured and replicable TM approach for ECs can look like, this paper applies the multi-actor multi-criteria analysis (MAMCA), a participative multi-criteria decision method, to a case study EC in the Netherlands involving various stakeholders. The impact of the application on power relations, the political sphere, sustainability conceptualization, guidance of transitions, and representation was analyzed. MAMCA was found useful for multi-stakeholder settings seen in potential ECs, offering a unifying methodology for the practical application of TM. In the EC setting, the added value of MAMCA within TM lies more in the social representation, insight into stakeholder viewpoints, and communication rather than in final decision-making.

There is a Conflict at the Heart of EU Water Pollution Policy

2015 ◽  
Vol 6 (3) ◽  
pp. 426-430
Author(s):  
David Taylor
Keyword(s):  
Water Pollution ◽  
Water Framework Directive ◽  
Simple Solution ◽  
Hazardous Substances ◽  
Eu Water Framework Directive ◽  
Current Application ◽  
The Eu

The current application of the hazardous substances provisions of Article 16 of the EU Water Framework Directive are in fundamental conflict with a number of other Directives and Regulations controlling the use of those hazardous substances that are currently essential to the wellbeing of the Community and its citizens. There is a simple solution to this conflict although reaching political agreement in such a polarised area may prove to be impossible.

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