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2022 ◽  
Vol 2022 ◽  
pp. 1-6
Author(s):  
Xi Wu ◽  
Shuying Qiao ◽  
Qiongqiong Tan

Analytic hierarchy process (AHP) refers to a decision-making method that decomposes the elements related to decision-making into goals, criteria, plans, and other levels and performs qualitative and quantitative analysis. Ecotourism is one component of sustainable tourism. Due to ecotourism activity, ecotourism links the reserved area with local residents and tourists. The aim of this research is to identify the proper ecotourism activity in Diaoluo Mountain National Nature Reserve with the help of the AHP method. The motivation behind the use of AHP is its widespread use in the decision-making process of selection of suitable candidate or alternative spot for tourists’ activity in the domain of ecotourism. The result shows that the most suitable ecotourism activity is “visit and experience life in the original ecology villages of Li and Miao ethnic minorities with a guide.” The proposed AHP decision-making method has effectively been used to select ecotourism activity based on multiple criteria evaluations.


Molecules ◽  
2022 ◽  
Vol 27 (2) ◽  
pp. 391
Author(s):  
Jesús Alfredo Araujo-León ◽  
Rolffy Ortiz-Andrade ◽  
Efrén Hernández-Baltazar ◽  
Emanuel Hernández-Núñez ◽  
Julio César Rivera-Leyva ◽  
...  

This study was performed to evaluate and compare the pharmacokinetic parameters between two dosage formulations of hesperidin and naringenin: mixture and tablet. Our objective was to determine that the flavonoid tablet does not significantly modify the pharmacokinetic parameters compared with the mixture. For this study, we administered 161 mg/kg of either mixture (Mix-160) or tablet composed of hesperidin and by intragastric administration. Blood microsamples were collected from tail vein up to 24 h. Serum flavonoid extraction was performed by solid phase extraction and analyzed by LC-MS/MS of triple quadrupole (QqQ). Serum concentration vs. time plot showed that data fitted for a first-order model. The pharmacokinetic parameters were calculated by a noncompartmental model. The results showed that the absorption constant is higher than the elimination constant. The first concentration was found at five minutes, and minimal concentration at 24 h after administration, suggesting a enterohepatic recirculation phenomena and regulation of liver cytochromes’ activity. We did not find meaningful differences between the pharmacokinetic parameters of both samples. We concluded that tablet form did not interfere with the bioavailability of hesperidin and naringenin, and it could be a suitable candidate for developing a drug product.


Signals ◽  
2022 ◽  
Vol 3 (1) ◽  
pp. 29-37
Author(s):  
Muhammad Ikram

The current and future wireless communication systems, WiFi, fourth generation (4G), fifth generation (5G), Beyond5G, and sixth generation (6G), are mixtures of many frequency spectrums. Thus, multi-functional common or shared aperture antenna modules, which operate at multiband frequency spectrums, are very desirable. This paper presents a multiple-input and multiple-output (MIMO) antenna design for the 5G/B5G Internet of Things (IoT). The proposed MIMO antenna is designed to operate at multiple bands, i.e., at 3.5 GHz, 3.6 GHz, and 3.7 GHz microwave Sub-6 GHz and 28 GHz mm-wave bands, by employing a single radiating aperture, which is based on a tapered slot antenna. As a proof of concept, multiple tapered slots are placed on the corner of the proposed prototype. With this configuration, multiple directive beams pointing in different directions have been achieved at both bands, which in turn provide uncorrelated channels in MIMO communication. A 3.5 dBi realized gain at 3.6 GHz and an 8 dBi realized gain at 28 GHz are achieved, showing that the proposed design is a suitable candidate for multiple wireless communication standards at Sub-6 GHz and mm-wave bands. The final MIMO structure is printed using PCB technology with an overall size of 120 × 60 × 10 mm3, which matches the dimensions of a modern mobile phone.


Life ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 72
Author(s):  
Gordana Nedeljković ◽  
Hrvoje Mazija ◽  
Željko Cvetić ◽  
Mladen Jergović ◽  
Krešo Bendelja ◽  
...  

Newcastle disease (ND) is a highly contagious avian disease. Global control of ND is mainly based on vaccination of poultry; however, reported outbreaks of ND in vaccinated flocks indicate a constant need to re-evaluate the existing vaccines and a development of the new ones. In this study, 4-week-old male chickens of the layer commercial hybrid were immunized oculonasally with a commercial NDV live La Sota vaccine (LS group), a suspension of lyophilized NDV strain ZG1999HDS (ZG group), or saline (Control (K) group). Antibody response was determined by haemagglutination inhibition (HI) assay. Cell-mediated immunity (CMI) was characterized by immunophenotyping of leukocyte’s and T-lymphocyte’s subpopulations (flow cytometry). Applied NDV strains did not cause any adverse reaction in treated chickens. Both strains induced the significantly higher HI antibody response in comparison to the control group, and overall antibody titer was higher in ZG group than in LS group. CMI, manifested as a higher proliferation of B- and T-helper cells, yielded better results in the ZG groups than in the LS group. Based on the obtained results, we conclude that the strain ZG1999HDS is immunogenic and is a suitable candidate for further research and development of poultry vaccines.


2022 ◽  
Vol 2022 ◽  
pp. 1-10
Author(s):  
Kavitha Govindarajan ◽  
Vijayarohini Parasuraman ◽  
Parasuraman Perumalswamy Sekar ◽  
Ilhami Colak ◽  
Balkew Zewge Hailemeskel

The synthesis of several metal complexes of d-block elements of hexadecanoic acid (palmitic acid) and its antimicrobial activity was reported in this study. UV-Vis and FT-IR spectroscopy studies were used to characterize and confirm the produced metal complexes by the shift in the absorbance and the formation of M-O linkage. The X-ray diffraction method was mainly used to examine the crystallographic faces of the complexes based on the transition metals. Thermal gravimetric investigation revealed that all metal palmitate complexes had high thermal stability in the range of 250-300°C. The metal complexes of hexadecanoic acid were examined for microbicidal activity against diverse bacterial strains and fungal pathogens using the agar well diffusion method. The copper palmitate complex presented excellent antibacterial activity among the other metal complexes. These outcomes suggest of using fatty acid metal complexes as a suitable candidate in several biomedical applications.


Polymers ◽  
2022 ◽  
Vol 14 (1) ◽  
pp. 169
Author(s):  
Seong Min Ji ◽  
Anuj Kumar

Sustainable biomass has attracted a great attention in developing green renewable energy storage devices (e.g., supercapacitors) with low-cost, flexible and lightweight characteristics. Therefore, cellulose has been considered as a suitable candidate to meet the requirements of sustainable energy storage devices due to their most abundant nature, renewability, hydrophilicity, and biodegradability. Particularly, cellulose-derived nanostructures (CNS) are more promising due to their low-density, high surface area, high aspect ratio, and excellent mechanical properties. Recently, various research activities based on CNS and/or various conductive materials have been performed for supercapacitors. In addition, CNS-derived carbon nanofibers prepared by carbonization have also drawn considerable scientific interest because of their high conductivity and rational electrochemical properties. Therefore, CNS or carbonized-CNS based functional materials provide ample opportunities in structure and design engineering approaches for sustainable energy storage devices. In this review, we first provide the introduction and then discuss the fundamentals and technologies of supercapacitors and utilized materials (including cellulose). Next, the efficacy of CNS or carbonized-CNS based materials is discussed. Further, various types of CNS are described and compared. Then, the efficacy of these CNS or carbonized-CNS based materials in developing sustainable energy storage devices is highlighted. Finally, the conclusion and future perspectives are briefly conferred.


2021 ◽  
Vol 8 (2) ◽  
pp. 316-334
Author(s):  
Fachrul Ghazi

Rafiqî by Mohammad Nur Asyiq is one of the literary works which was written in Arabic and was widespread in Indonesia in the seventies. The book is constructed from several Arabic pieces of literatures with the author’s touch of al-Balâghah discipline and its three branches: al-Ma’âny, al-Bayân, and al-Badî’, thus making this book is a suitable candidate for a study concerning al-Balâghah. This book can be used to explore the purpose and intent of applying al-Balâghah language style as well as revealing the scientific and social characteristics of the author. By applying descriptive analytical approach, it was found that the author used several language styles, such as al-Istifhâm, al-Iltifât, al-Qashr, al-Fashl wa al-Washl, at-Tasybîh, al-Kinâyah, and al-Iqtibâs. Those applications of al-Balâgah reveal the author’s noble personality and his affection for Indonesia, his fought against invaders to seize Indonesia’s independence, his eagerness to consume local domestic products, and his compassion for the weak.


Electronics ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 42
Author(s):  
Ahmad Hassan ◽  
Jean-Paul Noël ◽  
Yvon Savaria ◽  
Mohamad Sawan

As a wide bandgap semiconductor, Gallium Nitride (GaN) device proves itself as a suitable candidate to implement high temperature (HT) integrated circuits. GaN500 is a technology available from the National Research Council of Canada to serve RF applications. However, this technology has the potential to boost HT electronics to higher ranges of operating temperatures and to higher levels of integration. This paper summarizes the outcome of five years of research investigating the implementation of GaN500-based circuits to support HT applications such as aerospace missions and deep earth drilling. More than 15 integrated circuits were implemented and tested. We performed the HT characterization of passive elements integrated in GaN500 including resistors, capacitors, and inductors up to 600 °C. Moreover, we developed for the first time several digital circuits based on GaN500 technology, including logic gates (NOT, NAND, NOR), ring oscillators, D Flip-Flop, Delay circuits, and voltage reference circuits. The tested circuits are fabricated on a 4 mm × 4 mm chip to validate their functionality over a wide range of temperatures. The logic gates show functionality at HT over 400 °C, while the voltage reference circuits remain stable up to 550 °C.


RSC Advances ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 389-394
Author(s):  
Mathias Wolf ◽  
Shuichi Toyouchi ◽  
Peter Walke ◽  
Kazuki Umemoto ◽  
Akito Masuhara ◽  
...  

A facile way is shown to obtain thin films of [email protected] as well as their characterization and nonlinear optical properties. Our results suggest [email protected] to be a suitable candidate for high-harmonic generation.


Crystals ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 14
Author(s):  
Sajid Ali Ansari ◽  
Nazish Parveen ◽  
Mohd Al Saleh Al-Othoum ◽  
Mohammad Omaish Ansari

The design and development of electrode materials for energy-storage applications is an area of prime focus around the globe because of the shortage of natural resources. In this study, we developed a method for preparing a novel three-dimensional binder-free pseudocapacitive NiZn2O4 active material, which was grown directly over nickel foam ([email protected]), using a simple one-step hydrothermal process. The material was characterized by X-ray diffraction, scanning electron microscopy, and transmission electron microscopy. Cyclic voltammetry, galvanostatic charge–discharge, and electrochemical impedance spectroscopy techniques were employed to evaluate the pseudocapacitive performance of the NiZn2O4 active material in a three-electrode assembly cell. The prepared [email protected]F electrode exhibited an excellent specific capacitance, of 1706.25 F/g, compared to that of the [email protected] (1050 F/g) electrode because it has the bimetallic characteristics of both zinc and nickel. The [email protected] electrode showed better cyclic stability (87.5% retention) compared to the [email protected] electrode (80% retention) after 5000 cycles at a fixed current density, which also supports the durability of the [email protected] electrode. The characteristics of [email protected] include corrosion resistance, high conductivity, an abundance of active sites for electrochemical reaction, a high surface area, and synergism between the bimetallic oxides, which make it a suitable candidate for potential application in the field of energy storage.


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