bluuebunny/crossref_metadata_2025 huggingface dataset:
Surface Treatment of Acetabular Cups with a Direct Deposition of a Composite Nanostructured Layer Using a High Electrostatic Field
Authors: Pokorný Marek , Suchý Tomáš , Kotzianová Adéla , Klemeš Jan , Denk František , Šupová Monika , Sucharda Zbyněk , Sedláček Radek , Horný Lukáš , Králík Vlastimil , Velebný Vladimír , Čejka Zdeněk
Published: March 2020

A composite nanofibrous layer containing collagen and hydroxyapatite was deposited on selected surface areas of titanium acetabular cups. The layer was deposited on the irregular surface of these 3D objects using a specially developed electrospinning system designed to ensure the stability of the spinning process and to produce a layer approximately 100 micrometers thick with an adequate thickness uniformity. It was verified that the layer had the intended nanostructured morphology throughout its entire thickness and that the prepared layer sufficiently adhered to the smooth surface of the model titanium implants even after all the post-deposition sterilization and stabilization treatments were performed. The resulting layers had an average thickness of (110 ± 30) micrometers and an average fiber diameter of (170 ± 49) nanometers. They were produced using a relatively simple and cost-effective technology and yet they were verifiably biocompatible and structurally stable. Collagen- and hydroxyapatite-based composite nanostructured surface modifications represent promising surface treatment options for metal implants.
The Effect of Enriching Honey with Propolis on the Antioxidant Activity, Sensory Characteristics, and Quality Parameters
Authors: Habryka Celina , Socha Robert , Juszczak Lesław
Published: March 2020

Bee products, including propolis, are a valuable source of biologically active substances. The most natural way to introduce propolis in the diet seems to be its addition to honey. The aim of this study was to analyze the effect of honey enrichment with propolis on the content of selected bioactive compounds, antioxidant potential, as well as sensory and qualitative characteristics of honey. On the basis of the obtained results, it was stated that the addition of propolis extract to honey contributed to a significant increase in the content of polyphenolic compounds, including flavonoids and phenolic acids, among which chrysin, pinocembrin, p-coumaric, and ferulic acid reached the highest level. The increase of antioxidant, antiradical, and reduction in activity of enriched honey was observed as a result of increasing addition of propolis extract. However, the enrichment of honey with propolis contributed to deterioration of the sensory properties. The changes in color, smell, texture, and taste were observed. The addition of propolis to honey had no significant effect on 5-hydroxymethylfurfural (HMF) and sugar content, and specific conductivity. On the other hand, a significant increase in free acidity and content of substances insoluble in water was observed. The obtained results indicate that honey supplemented with propolis extract can be an excellent source of antioxidant compounds, nevertheless, the amount of additive used is strongly dependent on changes in sensory characteristics and consumer acceptability.
Preparation of Lignan-Rich Extract from the Aerial Parts of Phyllanthus niruri Using Nonconventional Methods
Authors: Meselhy Meselhy R. , Abdel-Sattar Ola E. , El-Mekkawy Sahar , EL-Desoky Ahmed M. , Mohamed Shanaz O. , Mohsen Sobhy M. , Abdel-Sattar Essam , El-Halawany Ali
Published: March 2020

Phyllanthin and related lignans were found to be responsible, at least in part, for most of the activity of Phyllanthus species. This observation encouraged the authors to develop methods for the preparation of an extract rich in phyllanthin and related lignans from the aerial parts of P. niruri L. Direct extraction with solvents produced extracts with variable yields and contents of lignans. Lignans were identified by LC-ESI-MS analysis as phyllanthin (used as marker substance), hypophyllanthin, phylltetralin, nirtetralin, and niranthin. Extraction with boiling water produced 18.10 g% (w/w) extract with a trace amount of lignans (phyllanthin content of 0.33 ± 0.10 mg/g extract), while extraction with MeOH gave 3.6 g% w/w extract with a low phyllanthin content (3.1 mg/g extract), as determined by HPLC. However, Soxhlet extraction with hexane, CH2Cl2, or acetone gave extracts with low yields (0.82, 1.12, and 3.40 g% w/w, respectively) and a higher phyllanthin contents (36.2 ± 2.6, 11.7 ± 1.68, and 11.7 ± 1.10 mg/g extract, respectively). Extraction quality and efficiency were optimized by adopting the following three different approaches: (1) Alkaline digestion of the plant material with 30% potassium hydroxide yielded 3.1 g% w/w of purified extract with high phyllanthin content (22.34 ± 0.13 mg/g); (2) microwave-assisted extraction using 80% MeOH gave an extract with a better yield (8.13 g% w/w) and phyllanthin content (21.2 ± 1.30 mg/g) (after filtration through a Diaion HP-20 column); and (3) treatment of the ground plant material at 50 °C with two hydrolytic enzymes, cellulase (9 U/g for 12 h) and then, protease (4 U/g up to 72 h) optimized the yield of extract (13.92 g% w/w) and phyllanthin content (25.9 mg/g extract and total lignans content of 85.87 mg/g extract). In conclusion, the nonconventional methods presented here are superior for optimizing the yield of extract and its lignan contents from the aerial parts of P. niruri.
Biodegradation of Conventional and Emerging Pollutants
Authors: Chrzanowski Łukasz , Ławniczak Łukasz
Published: March 2020

The concerns associated with the contamination of the environment remain a topic of great importance and growing interest [...]
Preparation and Characterization of Chitosan-Coated Pectin Aerogels: Curcumin Case Study
Authors: Pantić Milica , Horvat Gabrijela , Knez Željko , Novak Zoran
Published: March 2020

The following study describes the preparation of pectin aerogels and pectin aerogels coated with an external layer of chitosan. For the preparation of chitosan-coated pectin aerogels, a modified coating procedure was employed. Since pectin as well as pectin aerogels are highly water soluble, a function of chitosan coating is to slow down the dissolution of pectin and consequently the release of the active substances. Textural properties, surface morphologies, thermal properties, and functional groups of prepared aerogels were determined. Results indicated that the coating procedure affected the textural properties of pectin aerogels, resulting in smaller specific surface areas of 276 m2/g, compared to 441 m2/g. However, chitosan-coated pectin aerogels still retained favorable properties for carriers of active substances. The case study for prepared aerogels was conducted with curcumin. Prior to in-vitro release studies, swelling studies were performed. Curcumin’s dissolution from both aerogels showed to be successful. Pectin aerogels released curcumin in 3 h showing a burst release profile. Chitosan-coated pectin aerogels prolonged curcumin release up to 24 h, thus showing a controlled release profile.
Performance of Fluorescence and Diffuse Reflectance Hyperspectral Imaging for Characterization of Lutefisk: A Traditional Norwegian Fish Dish
Authors: Hassoun Abdo , Heia Karsten , Lindberg Stein-Kato , Nilsen Heidi
Published: March 2020

Lutefisk is a traditional Norwegian fish dish made from dried fish, such as cod or other whitefish. In Norway and other Nordic countries, lutefisk is considered among the most popular dishes served during Christmas or other festive occasions. However, to date, little attention has been paid to this product, and available research on the quality, processing, and chemistry of lutefisk is still limited. The quality of this very delicate product, with a high pH value, depends on many factors, such as the initial quality of raw materials (stockfish), the quantity of lye used during the preparation process of lutefisk, and time during soaking in the lye and water, among others, making it challenging to both optimize processing and monitor the quality of lutefisk. In this study, four commercially available lutefisk brands (labelled as A, B, C, and D) were characterized using two online spectroscopic techniques, namely fluorescence and diffuse reflectance hyperspectral imaging, implemented on conveyor belts to mimic industrial applications. The samples were also analyzed by the use of an offline laboratory instrument based on visible/near infrared diffuse reflectance spectroscopy. Three traditional measurements, including texture, water content, and pH, were also conducted on the same samples. Supervised classification PLS-DA models were built with each dataset and relationships between the spectroscopic measurements and the traditional data were investigated using canonical correlations. The spectroscopic methods, especially fluorescence spectroscopy, demonstrated high performance for the discrimination between samples of the different brands, with high correlations between the spectral and traditional measurements. Although more validations of the results of this study are still required, these preliminary findings suggest that the destructive, laborious, and time-consuming traditional techniques can be replaced by rapid and nondestructive online measurements based on hyperspectral imaging used in fluorescence or diffuse reflectance mode.
Precise Surface State Control of Carbon Quantum Dots to Enhance Charge Extraction for Solar Cells
Authors: Yang Qiming , Yang Wen , Zhang Yong , Ge Wen , Yang Xin , Yang Peizhi
Published: March 2020

Dye-sensitized solar cells are regarded as promising candidates to resolve the energy and environmental issues in recent years, arising from their solution-processable fabrication technology and high power conversion efficiency. However, there are still several problems regarding how to accelerate the development of this type of photovoltaics, including the limited light-harvesting ability and high-production cost of molecular dye. In the current work, we have systematically studied the role of nitrogen-doped carbon quantum dots (N-CQDs) as co-sensitizers in traditional dye sensitized solar cells. A series of N-CQDs have been prepared by employing chitosan as a precursor via one-pot hydrothermal technology for various times, demonstrating a maximized efficiency as high as 0.089% for an only N-CQDs-based device. Moreover, the co-sensitized solar cell based on N719 dye (C58H86N8O8RuS2) and optimized N-CQDs shows significantly enhanced performance, yielding a solar-to-electric conversion efficiency of up to 9.15% under one standard sun (AM 1.5G) irradiation, which is much higher than the 8.5%-efficiency of the controlled device without N-CQDs. The matched characteristics of energy level, excellent up-convention, and FRET (Förster resonance energy transfer) abilities of N-CQDs are responsible for their improved power conversion efficiency.
D
*

Polarization as an Additional Constraint on New Physics in the b → cτ

ν
¯

τ Transition
Authors: Ivanov Mikhail A. , Körner Jürgen G. , Santorelli Pietro , Tran Chien-Thang
Published: March 2020

Measurements of the branching fractions of the semileptonic decays

B
→

D

(
*
)

τ

ν
¯

τ

and

B
c

→
J
/
ψ
τ

ν
¯

τ

systematically exceed the Standard Model predictions, pointing to possible signals of new physics that can violate lepton flavor universality. The unknown origin of new physics realized in these channels can be probed using a general effective Hamiltonian constructed from four-fermion operators and the corresponding Wilson coefficients. Previously, constraints on these Wilson coefficients were obtained mainly from the experimental data for the branching fractions. Meanwhile, polarization observables were only theoretically studied. The situation has changed with more experimental data having become available, particularly those regarding the polarization of the tau and the

D
*

meson. In this study, we discuss the implications of the new data on the overall picture. We then include them in an updated fit of the Wilson coefficients using all hadronic form factors from our covariant constituent quark model. The use of our form factors provides an analysis independent of those in the literature. Several new-physics scenarios are studied with the corresponding theoretical predictions provided, which are useful for future experimental studies. In particular, we find that under the one-dominant-operator assumption, no operator survives at

1
σ

. Moreover, the scalar operators

O

S
L

and

O

S
R

are ruled out at

2
σ

if one uses the constraint

B
(

B
c

→
τ

ν
τ

)
≤
10
%

, while the more relaxed constraint

B
(

B
c

→
τ

ν
τ

)
≤
30
%

still allows these operators at

2
σ

, but only minimally. The inclusion of the new data for the

D
*

polarization fraction

F
L

D
*

reduces the likelihood of the right-handed vector operator

O

V
R

and significantly constrains the tensor operator

O

T
L

. Specifically, the

F
L

D
*

alone rules out

O

T
L

at

1
σ

. Finally, we show that the longitudinal polarization

P
L
τ

of the tau in the decays

B
→

D
*

τ

ν
¯

τ

and

B
c

→
J
/
ψ
τ

ν
¯

τ

is extremely sensitive to the tensor operator. Within the

2
σ

allowed region, the best-fit value

T
L

=
0.04
+
i
0.17

predicts

P
L
τ

(

D
*

)

=
−
0.33

and

P
L
τ

(
J
/
ψ
)

=
−
0.34

, which are at about 33% larger than the Standard Model (SM) prediction

P
L
τ

(

D
*

)

=
−
0.50

and

P
L
τ

(
J
/
ψ
)

=
−
0.51

.
Detectable Optical Signatures of QED Vacuum Nonlinearities Using High-Intensity Laser Fields
Authors: Klar Leonhard
Published: March 2020

Up to date, quantum electrodynamics (QED) is the most precisely tested quantum field theory. Nevertheless, particularly in the high-intensity regime it predicts various phenomena that so far have not directly been accessible in all-optical experiments, such as photon-photon scattering phenomena induced by quantum vacuum fluctuations. Here, we focus on all-optical signatures of quantum vacuum effects accessible in the high-intensity regime of electromagnetic fields. We present an experimental setup giving rise to signal photons distinguishable from the background. This configuration is based on two optical pulsed petawatt lasers: one generates a narrow but high-intensity scattering center to be probed by the other one. We calculate the differential number of signal photons attainable with this field configuration analytically and compare it with the background of the driving laser beams.
Optimization of Drug Permeation from 8% Ciclopirox Cyclodextrin/Poloxamer-Soluble Polypseudorotaxane-Based Nail Lacquers
Authors: Cutrín-Gómez Elena , Conde-Penedo Andrea , Anguiano-Igea Soledad , Gómez-Amoza José Luis , Otero-Espinar Francisco J.
Published: March 2020

Cyclodextrin/poloxamer-soluble polypseudorotaxane-based nail lacquers have demonstrated significant capacity for promoting the permeation of drugs into the nail plate. Furthermore, previous studies have shown that the use of hydroalcoholic blends as vehicles promotes drug permeation. The work described herein studies the effect of the type of alcohol used in the lacquer preparation, and the composition of the vehicle is optimized to obtain soluble doses of 8% and to promote the diffusion of ciclopirox base and olamine across the nail. Permeation studies on different types of alcohols show that optimum results are achieved with short-chain alcohols, and that results become less satisfactory the higher the number of alcohol carbons. In addition, solubility and penetration studies on the bovine hoof have enabled the composition of the lacquer to be optimized for both forms of ciclopirox. The results suggest that optimized lacquers have better ciclopirox diffusion and penetration properties than the commercial reference lacquer. Lastly, in vivo studies in which optimized ciclopirox olamine lacquer was applied for 45 days to the nails of healthy volunteers showed that it caused no negative effects or changes to the nail surface. These results demonstrate the significant potential of cyclodextrin/poloxamer-soluble polypseudorotaxane-based nail lacquers for the ungual administration of drugs.
The Role of Two-Step Blending in the Properties of Starch/Chitin/Polylactic Acid Biodegradable Composites for Biomedical Applications
Authors: Olaiya Niyi Gideon , Nuryawan Arif , Oke Peter Kayode , Khalil H. P. S. Abdul , Rizal Samsul , Mogaji P. B. , Sadiku E. R. , Suprakas S. R. , Farayibi Peter Kayode , Ojijo Vincent , Paridah M. T.
Published: March 2020

The current research trend for excellent miscibility in polymer mixing is the use of plasticizers. The use of most plasticizers usually has some negative effects on the mechanical properties of the resulting composite and can sometimes make it toxic, which makes such polymers unsuitable for biomedical applications. This research focuses on the improvement of the miscibility of polymer composites using two-step mixing with a rheomixer and a mix extruder. Polylactic acid (PLA), chitin, and starch were produced after two-step mixing, using a compression molding method with decreasing composition variation (between 8% to 2%) of chitin and increasing starch content. A dynamic mechanical analysis (DMA) was used to study the mechanical behavior of the composite at various temperatures. The tensile strength, yield, elastic modulus, impact, morphology, and compatibility properties were also studied. The DMA results showed a glass transition temperature range of 50 °C to 100 °C for all samples, with a distinct peak value for the loss modulus and factor. The single distinct peak value meant the polymer blend was compatible. The storage and loss modulus increased with an increase in blending, while the loss factor decreased, indicating excellent compatibility and miscibility of the composite components. The mechanical properties of the samples improved compared to neat PLA. Small voids and immiscibility were noticed in the scanning electron microscopy images, and this was corroborated by X-ray diffraction graphs that showed an improvement in the crystalline nature of PLA with starch. Bioabsorption and toxicity tests showed compatibility with the rat system, which is similar to the human system.
Characterization of Date Palm Fiber-Reinforced Different Polypropylene Matrices
Authors: Sh. Al-Otaibi Mohammed , Alothman Othman , Alrashed Maher , Anis Arfat , Naveen Jesuarockiam , Jawaid Mohammad
Published: March 2020

In this study, the effect of different polypropylene (PP) matrices (homopolymer (HPP), impact copolymer (ICP), and recycled polypropylene (rPP)) on the mechanical, morphological, and thermal properties of date palm fiber (DPF)-reinforced PP composites was investigated. The DPFs were treated with an alkali solution, and composites were fabricated with different DPF loadings (5, 10, and 15 wt %) and lengths (less than 2 mm and 8–12 mm). It was found that the tensile properties of the DPF/ICP and DPF/rPP composites were similar to those of the DPF/HPP composites. The addition of fiber to the matrix reduced its tensile strength but increased the modulus. The alkali treatment improved the compatibility between the fibers and the matrix by removing hemicellulose and other impurities. Fourier transform infrared spectroscopy confirmed hemicellulose removal. The morphology of the alkali-treated fractured tensile specimen revealed improved adhesion and less fiber pull out. Differential scanning calorimetry revealed that the alkali treatment enhanced the crystallinity index. Thermogravimetric analysis showed that the addition of DPFs into the PP matrix reduced the thermal stability of the composite. However, the thermal stability of the treated fiber-reinforced rPP and ICP composites was similar to that of the DPF/HPP composite. Hence, rPP can be used as an alternative to HPP with DPFs.
Human Activities Enhance Radiation Forcing through Surface Albedo Associated with Vegetation in Beijing
Authors: Tang Xiying , Cui Yaoping , Li Nan , Fu Yiming , Liu Xiaoyan , Run Yadi , Li Mengdi , Zhao Guosong , Dong Jinwei
Published: March 2020

The impact of human activities on vegetation has been the focus of much research, but the impact on radiation energy through surface albedo associated with vegetation greenness and length of the growth season is still not well documented. Based on the land cover data for the years 2000 and 2015, this study first divided the land cover change in Beijing from 2000 to 2015 into five types according to the impact of human activities and vegetation resilience, namely, old urban areas (OU), urban expansion areas (UE), cropland (CP), mixed pixel areas (MP, which means the land covers other than urban expansion which had changed from 2000 to 2015), and the residual vegetation cover areas (pure pixels (PP), dominated by natural and seminatural vegetation, such as grassland, forest, and wetland). Then, we calculated the direct radiative forcing from the albedo change from 2000 to 2015 and analyzed the effect of vegetation on the albedo under different land cover types based on multi-resource Moderate Resolution Imaging Spectroradiometer (MODIS) products of vegetation, albedo, and solar radiation. The results showed that the most typical changes in land cover were from urban expansion. By comparing the PP with the four human-affected land cover types (OU, UE, MP, and CP), we confirmed that the radiative forcing increment between 2001–2003 and 2013–2015 in PP (0.01 W/m2) was much smaller than that in the four human-affected land cover types (the mean increment was 0.92 W/m2). This study highlights that human activities affected vegetation growth. This, in turn, brought changes in the albedo, thereby enhancing radiative forcing in Beijing during 2000–2015.
Wind-Driven Coastal Upwelling near Large River Deltas in the Laptev and East-Siberian Seas
Authors: Osadchiev Alexander , Silvestrova Ksenia , Myslenkov Stanislav
Published: March 2020

The Lena, Kolyma, and Indigirka rivers are among the largest rivers that inflow to the Arctic Ocean. Their discharges form a freshened surface water mass over a wide area in the Laptev and East-Siberian seas and govern many local physical, geochemical, and biological processes. In this study we report coastal upwelling events that are regularly manifested on satellite imagery by increased sea surface turbidity and decreased sea surface temperature at certain areas adjacent to the Lena Delta in the Laptev Sea and the Kolyma and Indigirka deltas in the East-Siberian Sea. These events are formed under strong easterly and southeasterly wind forcing and are estimated to occur during up to 10%–30% of ice-free periods at the study region. Coastal upwelling events induce intense mixing of the Lena, Kolyma, and Indigirka plumes with subjacent saline sea. These plumes are significantly transformed and diluted while spreading over the upwelling areas; therefore, their salinity and depths abruptly increase, while stratification abruptly decreases in the vicinity of their sources. This feature strongly affects the structure of the freshened surface layer during ice-free periods and, therefore, influences circulation, ice formation, and many other processes at the Laptev and East-Siberian seas.
Sustainability of Live Video Streamer’s Strategies: Live Streaming Video Platform and Audience’s Social Capital in South Korea
Authors: Heo Jeakang , Kim Yongjune , Yan Jinzhe
Published: March 2020

Live streamers’ power and attraction influence consumer behavior. This study focuses on streamer-central formed social capital and the relationship between streamers and audiences on live streaming video platforms (LSVP). First, we explored the impact of trust, norm of reciprocity, and network on social capital formation. Second, we investigated the effect of social capital on streamers’ attributes (attractiveness, expertise, and trustworthiness) and on the audience’s social capital formation. The main findings show that trust and network positively affect social capital. Social capital increases the level of streamers’ attractiveness, expertise, and trustworthiness perceived by the audience, which facilitates sustainable development of the LSVP and the streamer. Perceived streamers’ attractiveness negatively affects social capital formation, while perceived expertise positively affects it. To promote social capital development, streamers and operators of LSVPs should continuously emphasize social capital formation. Moreover, LSVPs should provide audiences with novel and interesting content to enable active networking. For sustainable development of LSVPs, when providing live streaming video services, streamers should deliver content that the audience perceives as based on their expertise rather than on their physical attractiveness.
Sustainable Transport Infrastructure and Economic Returns: A Bibliometric and Visualization Analysis
Authors: Badassa Bayissa Badada , Sun Baiqing , Qiao Lixin
Published: March 2020

Sustainable transport infrastructure can determine the effect of countries’ transport-driven economic returns. Considering the economic, environmental, and social relevance and growing issues of CO 2 in the countries concerned, this study aims to examine sustainable transport infrastructure related to economic return through a bibliometric and visualization analysis from 2000 to 2019. First, to measure the status of sustainable transport infrastructure literature, we determine the number of publications produced per year. Second, we determine the most frequently cited articles and prominent journals on sustainable transport infrastructure. Third, we examine the co-occurrence of the author’s keywords below the abstract. Fifth, we describe the bibliometric details in clusters and analyze the network link between reference, sources, and authors’ co-citations, and discuss the characteristics and structures of clusters. Sixth, we discuss the bibliographic relationship between authors, and finally, determine the country and the institutional network of co-authors. The obtained results identify that the most influential articles, journals, and authors that make a significant contribution to sustainable transport infrastructure studies and present the research sub-areas or themes related to sustainable transport infrastructure. Overall, the study found the paradigms of today, key research areas, and the link between the fields of sustainable transport infrastructure studies. In the meantime, this study also reveals the improvements in the main topics and sub-sections over the last 20 years and shows the changes in future areas of research. The study concluded that the findings could provide researchers with some insights and help to advance studies on sustainable transport systems.
Education for Agenda 2030: What Direction do We Want to Take Going Forward?
Authors: Agirreazkuenaga Leire
Published: March 2020

In the field of education, the concept of environment and sustainable education, and the use of some terms in this field, have developed since their beginning. The United Nations Agenda 2030 of the Sustainable Development Goals (SDGs) gives some clues about and opportunities to reflect upon which concepts and directions to take in the field of education towards promoting sustainability. This paper addresses the issue of the currently fragmented concepts in relation to environmental and sustainability education, and proposes a more comprehensive vision to better advance the path towards education and sustainability. This paper: (1) addresses the main historical milestones in the construction of the concept of environmental education and education for sustainable development; (2) analyzes the issue of which direction we should take within the framework of education in the era of the SDG Agenda 2030, taking emerging concepts such as learning for sustainability and sustainable education as references; and (3) proposes a holistic approach, described as education based on values. We conclude that a new integrative approach inspired by the education based on values concept, and integrating other concepts, will help to better conceptualize sustainability in education, as explained in the proposed model.
Curvature Spinors in Locally Inertial Frame and the Relations with Sedenion
Authors: Hong In Ki , Kim Choong Sun , Min Gyung Hyun
Published: March 2020

In the 2-spinor formalism, the gravity can be dealt with curvature spinors with four spinor indices. Here we show a new effective method to express the components of curvature spinors in the rank-2 4 × 4 tensor representation for the gravity in a locally inertial frame. In the process we have developed a few manipulating techniques, through which the roles of each component of Riemann curvature tensor are revealed. We define a new algebra ‘sedon’, the structure of which is almost the same as sedenion except for the basis multiplication rule. Finally we also show that curvature spinors can be represented in the sedon form and observe the chiral structure in curvature spinors. A few applications of the sedon representation, which includes the quaternion form of differential Binanchi identity and hand-in-hand couplings of curvature spinors, are also presented.
Comparing the Adsorption Performance of Multiwalled Carbon Nanotubes Oxidized by Varying Degrees for Removal of Low Levels of Copper, Nickel and Chromium(VI) from Aqueous Solutions
Authors: Šolić Marko , Maletić Snežana , Kragulj Isakovski Marijana , Nikić Jasmina , Watson Malcolm , Kónya Zoltan , Tričković Jelena
Published: March 2020

Functionalized multiwalled carbon nanotubes (MWCNTs) have drawn wide attention in recent years as novel materials for the removal of heavy metals from the aquatic media. This paper investigates the effect that the functionalization (oxidation) process duration time (3 h or 6 h) has on the ability of MWCNTs to treat water contaminated with low levels of Cu(II), Ni(II) and Cr(VI) (initial concentrations 0.5–5 mg L−1) and elucidates the adsorption mechanisms involved. Adsorbent characterization showed that the molar ratio of C and O in these materials was slightly lower for the oxMWCNT6h, due to the higher degree of oxidation, but the specific surface areas and mesopore volumes of these materials were very similar, suggesting that prolonging the functionalization duration had an insignificant effect on the physical characteristics of oxidized multiwalled carbon nanotubes (oxMWCNTs). Increasing the Ph of the solutions from Ph 2 to Ph 8 had a large positive impact on the removal of Cu(II) and Ni(II) by oxMWCNT, but reduced the adsorption of Cr(VI). However, the ionic strength of the solutions had far less pronounced effects. Coupled with the results of fitting the kinetics data to the Elowich and Weber–Morris models, we conclude that adsorption of Cu(II) and Ni(II) is largely driven by electrostatic interactions and surface complexation at the interface of the adsorbate/adsorbent system, whereas the slower adsorption of Cr(VI) on the oxMWCNTs investigated is controlled by an additional chemisorption step where Cr(VI) is reduced to Cr(III). Both oxMWCNT3h and oxMWCNT6h have high adsorption affinities for the heavy metals investigated, with adsorption capacities (expressed by the Freundlich coefficient KF) ranging from 1.24 to 13.2 (mg g−1)/(mg l−1)n, highlighting the great potential such adsorbents have in the removal of heavy metals from aqueous solutions.
Evaluation of Methanolic Extract of Hypericum Mysorense Ointment for its Wound Healing Activity
Authors: C Sankar , S Muthukumar , G Arulkumaran , R Vinesha , Manimekalaim Manimekalaim , Simson Sandeep George
Published: March 2020

The main objective of the present study is to formulate and evaluate semi-solid dosage forms of Hypericum mysorense for its wound healing activity. The stem of Hypericummysorense was extracted by continuous hot percolation/ soxhletationusing methanol as solvent and was evaluated for its phytochemical property, in-vitro antimicrobial and in-vitro antioxidant activity. Using this methanolic extract, semi-solid dosage form(ointment) was formulated. Ointment was prepared using 2% concentration of the extract by fusion method using emulsifying ointment.Hence, the ointment containing 2% methanolic extract of Hypericummy-sorensewas evaluated for its wound healing activity using excision wound model. The effect produced by the extract ointment, in terms of wound contracting ability, wound closure time and histopathological characteristics were comparable to that of a standard drug povidone iodine ointment. Therefore, the present study concluded that the Hypericum mysorense at 2% concentration of the methanolic extract formulated as an ointment showed a better wound healing formulation for better patient care and pharmaco economical.
Healthcare Applications in IoT
Authors: Islam Md Sanju , Humaira Fozilatoon , Narin Nur Dr. Fernaz
Published: March 2020

IoT is a blessing in the field of information and technology. It is developing and deploying day by day. It is working for our betterment in the section of home, environment, retail, security, factory, industry, agriculture, education, energy, healthcare and so on. In the healthcare section, it has applications, technologies, benefits and also challenges with the four-step architecture. As the world is aging with its uprising population, there is not enough opportunity for all to get healthcare. I think Health is the most expensive property one can own. So in the absence of sufficient and quality healthcare, IoT can manufacture the best utilization of its capacity to play a vital role in creating a better world for all of us. This paper represents the basic concept of IoT in the healthcare field.
Bone Marrow Lymphocyte Populations of Innate Immunity in Breast Cancer Patients
Authors: Tupitsyn N. N. , Mkrtchyan V. A. , Palladina A. D. , Vorotnikov I. K.
Published: March 2020

The innate immunity system plays an important role in antitumor protection, and more and more attention has been paid to its study recent years. However, the interrelation of the effect or subpopulations of the cells of the innate immunity in bone marrow with clinical parameters is poorly studied. The paper presents data on the composition of innate immune cells in the bone marrow of 64 patients with operable breast cancer, as well as 10 women with benign processes in the mammary gland. As result a significant correlation between the molecular subtype of cancer and the level of B1- lymphocytes was identified. Breast cancer patients levels of NK cells (CD56 + CD3- and CD16 + CD3-) in the bone marrow were significantly higher in patients with low proliferative activity (Ki-67 less than 20%), compared to patients having a high tumor proliferation index. Populations of NK cells were interrelated with erythropoiesis in patients with breast cancer and were significantly higher in cases of reduced basophilic and polychromatophilicnormoblasts.
In Vitro Immunomodulatory Effect of Linalool on P. gingivalis Infection
Authors: R. P. B. Santos , P. C. Carvalho-Filho , G. P. Sampaio , R. R. Silva , M. M. L. Falcão , A. C. M. Pimentel , Y. A. Oliveira , P. M. Miranda , E. K. N. Santos , R. Meyer , M. T. Xavier , S. C. Trindade
Published: March 2020

Introduction: Periodontitis is a multifactorial disease, characterized by an inflammatory response of the periodontal tissues to a dysbiotic biofilm in the subgingival surface. The presence of keystone pathogens, such as Porphyromonas gingivalis, is one of the main causes of dysbiosis, although the host response is preponderant in the beginning and the progression of the disease. The periodontal treatment is based on the mechanic scaling of the biofilm but using of chemicals adjuvants has been preconized. However, there are many restrictions related to the antibiotics and other chemical adjuvants usage, which makes the use of herbal medicines for this purpose very promising. In addition, many herbal medicines have been used in the folk medicine, with various biologic effects.
Nohut (Cicer arietinum L.)’un Verim ve Kalitesine Ahır Gübre Dozlarının Etkisi
Authors: KARAYEL Reyhan , UZUN Arslan , BOZOĞLU Hatice
Published: March 2020

Kimyasalların bilinçsiz kullanımı doğal dengeyi bozmakta, çevre ve insan sağlığında ciddi tehditler yaratmaktadır. Doğal kaynakları kirletmeden verimi ve kaliteyi yükselterek sağlıklı gıda elde etmek için organik gübrelerin kullanımı önerilmektedir. Bu çalışmada, nohutun verim ve kalitesine ahır gübresinin etkisi araştırılmıştır. Bu amaçla 5 doz ahır (0, 750, 1500, 2250 ve 3000 kg/da) ve bir doz kimyasal (4 kg/da N) gübre olmak üzere 6 doz gübre uygulaması yapılmıştır. Denemeler tesadüf blokları deneme deseninde 3 tekrarlamalı olarak 2015 ve 2016 yıllarında yürütülmüştür. Materyal olarak Sezenbey nohut çeşidi kullanılmıştır. Yıllar üzerinden birleştirilerek yapılan varyans analizi sonuçlarına göre, biyolojik verim, bitkide bakla sayısı, tane verimi, tanedeki protein oranı, tanedeki Fe ve Cu içeriğinin gübre dozlarından istatistiki olarak etkilendiği tespit edilmiştir. Bakla sayısının 30.23-45.9 adet/bitki, tane veriminin 12.26-19.25 g/bitki, tanede ham protein oranının % 16.6-24.3 arasında değiştiği belirlenmiştir. Protein oranı ve bitkide bakla sayısında tüm gübre uygulamalarının kontrolden farklı olduğu, tane veriminde ise kimyasal gübre uygulamasının en yüksek değeri verdiği tespit edilmiştir. Tane verimi ve tanedeki protein oranı, ahır gübresi dozları dikkate alınarak regrasyon analizine tabi tutulmuş ve gübre dozlarının tane verimine ikinci dereceden, protein oranının ise birinci dereceden önemli (P
The Effect of Quality of Service, Image, and Business Ethics on Satisfaction and Loyality of Patients in Hospitals in Makassar City
Authors: Azhari Aslan , Modding Basri , Labbase Ilham , Plyriadi Annas
Published: March 2020

Research related to the Effect of Service Quality, Image, and Business Ethics on Patient Satisfaction and Loyalty at Hospitals in Makassar City. This research was conducted which aims to: (1) test and analyze the effect of service quality, image, business ethics on patient satisfaction, (2) test and analyze the effect of service quality, image, business ethics on patient loyalty, (3) test and analyze the effect satisfaction with patient loyalty, (4) test and analyze the indirect effect of service quality, image, and business ethics on patient loyalty through mediating patient satisfaction. This study uses primary data through distributing questionnaires to a total of 203 inpatients as samples from the total number of patients in 2018 totaling 69.337, data collection was carried out from December 2019 to January 2020. Data were analyzed using Structural Equation Modeling (SEM) analysis with program assistance AMOS and SPSS. The results showed that (1) service quality, image, and business ethics had a positive and significant direct effect on patient satisfaction, (2) service quality, image, and business ethics had a positive and significant direct effect on patient loyalty, (3) satisfaction has a positive and not significant direct effect on patient loyalty, (4) an indirect relationship of service quality, image, and business ethics, through mediation satisfaction has a positive and not significant effect on patient loyalty. This means that the provision of good quality services, the application of the hospital's image, and the application of ethical behavior will have a direct role in patient satisfaction and loyalty. Patient satisfaction does not significantly affect patient loyalty due to the existence of a system of tiered referral system which makes it impossible for patients to directly choose the hospital, except in an emergency. Quality of service, image, and business ethics through satisfaction has a positive and not significant effect on patient loyalty. This shows that patient satisfaction is not able to mediate to have a significant influence on patient loyalty.
KEDUDUKAN DOKTRIN RES IPSA LOQUITUR (DOKTRIN YANG MEMIHAK PADA KORBAN) DALAM TATA HUKUM INDONESIA
Authors: APRIANI TITIN
Published: March 2020

This research is a library research that uses data in the form of books, laws, articles, journals and other literature related to the title, while the technique and data collection is by collecting various ideas, theories and concepts from various literatures that focus on the process of comparison between the arguments or other laws. The results of the study can be drawn a conclusion that the doctrine of res ipsa loquitur can be applied in Indonesia through the evidences that have been concluded by the judge, in accordance with applicable law. Article 173 of the RIB states that the allegations which are not based on an applicable law, may only be considered by the judge in passing the verdict, if the allegations are important, thorough, certain and in accordance with one another. In line with Article 1922 of the Civil Code, it is stated that the allegations that are not based on the law are left to the consideration and alertness of judges, which should not be considered by other allegations, other than those that are thorough and certain, and in accordance with each other
PARTISIFASI PETANI DALAM KEGIATAN PENYULUHAN USAHATANI PADI SAWAH SISTEM TANAM JAJAR LEGOWO DI KABUPATEN LOMBOK BARAT
Authors: WEDASTRA MADE SUMA , SUARTA I DEWA GEDE
Published: March 2020

Lowland rice farming with jajar legowo’s planting system causes an increase in production which is originally 6 tons / hectare to 8.8 tons / hectare, but until now not all farmers have adopted the technology. This research is conducted in West Lombok Regency with survey techniques, with descriptive data analysis. The results show that: the participation of farmers in the extension activities of paddy farming with jowo legowo’s planting system is quite high in number with level of participation is 161.25 Some of the obstacles faced by farmers in extension activities are as follows: collide with other activities, there is boredom in participating in counseling because they think it wastes time, the delivery of material is not in accordance with the planting patterns planned by farmers and the benefits are still lacking. There are still many farmers who do not adopt the technology, with the reason that: planting with a row planting system requires more time, requires more seeds, requires more fertilizer and more work conditions, ultimately impacting the costs incurred by the farmers. To increase farmers' participation in extension activities, more intensive training is needed by field extension workers (PPL), so that they can change the behavior of farmers and want to adopt the technology
EVALUASI KINERJA OPERASIONAL TERMINAL DARA KOTA BIMA
Authors: SUTEJA I WAYAN , ROHANI ROHANI , HASYIM HASYIM
Published: March 2020

Terminal Dara is the center of community activities in meeting the needs for movement from one place to another with various purposes used by the people of the of Bima City and Regency. Terminal Dara has experienced a decline and an increase in the number of transportation from year to year; this condition makes facilities and operational performance at the Dara Terminal become very important. The purpose of this study is to determine the operational performance and facilities as well as the current area of Dara Terminal facilities. The method used in this study is a direct survey in the field for primary data by recording the bus license plate, time of entry and exit of buses and visitors vehicles at the entrance and exit gate and recording the number of passengers and users of waiting rooms, the number of seats in passenger waiting rooms, and bus station facilities. Data collection is carried out for three days with duration of 13 hours each day.Based on the results of the analysis of the performance that has been carried out, the value for the bus queue analysis ρ = 2.11> 1 indicates that there is a queue of bus services at Dara bus station. The highest value of arrival average time headway is 17 minutes 22 seconds and the departures average time headway is 12 minutes 23 seconds. The highest departure load factor is 81.44% in the ANGDES and the highest load factor is 73.64% in ANGDES too. The parking space requirement for cars and motorbikes of 128 m² can still be served by vehicle parking area in bus station, while the parking area for bus is not able to serve bus which parked in the bus parking area with the value of parking space needs 902.5 m² while the area the current bus parking area is 631.25 m². Based on the results of the performance analysis that has been done, the value obtained for bus queue analysis ρ = 2.11> 1 indicates that there is a queue of bus services in Dara Terminal. The time between the highest average arrivals is 17 minutes 22 seconds and the time between the highest average departures is 12 minutes 23 seconds. The highest departure load factor was 81.44% at ANGDES and the highest arrival load factor was 73.64% at ANGDES as well. The need for parking spaces for private cars and motorbikes of 128 m² can still be served by the terminal private vehicle parking area, while the parking area for buses is not able to serve buses that park in the bus parking area with a value of 902.5 m² of parking space while the area the bus parking area is currently 631.25 m². Based on existing survey results, the bus departure lane and passenger lounge of Terminal Daral need to be renovated, or they can relocate the terminal to a wider area.
PENERAPAN PROGRAM CORPORATE SOCIAL RESPONSIBILITY PADA THE OBEROI BEACH RESORT BALI
Authors: SARASWATI MADE AYU ARINDA , KASIANI KASIANI , WIDIANTARA I MADE , ISTIARTO ISTIARTO
Published: March 2020

Corporate Social Responsibility (CSR) is an obligation of employers to formulate policies, make decisions, or follow the desired line of action in terms of community goals and values that emphasize on corporate responsibility which is no longer just an economic activity (creating profit for business continuity), yet social responsibility including the environment. This study uses qualitative data with descriptive methods. Data obtained by observing the object of research, conducting interviews with the Human Resources Department, employees, and the community around the hotel and documentation of CSR activities at The Oberoi Beach Resort Bali. The purpose of this study is to find out the steps of CSR implementation, types, and implementation of CSR and the problem with the solutions related to the implementation of CSR in The Oberoi Beach Resort Bali. The results of this study are The Oberoi Beach Resort Bali implements the steps of CSR implementation, such as planning, implementing, and reporting. The implementation of CSR activities is based on the implementation of CSR in Indonesia, such as CSR based on charity philanthropy and social activity.
PERBANDINGAN BEBERAPA METODE DEBIT PUNCAK BANJIR RANCANGAN COMPARISON OF SOME PEAK DISCHARGE FLOOD DESIGN METHODS
Authors: SAIDAH HUMAIROH , PRACOYO ATAS , KHAIRUDIN KHAIRUDIN
Published: March 2020

Peak discharge flood analysis is very crucial in waterworks design. The proper design flood discharge will produce effective construction dimensions as project requirement. Therefore, flood design calculations must be analyzed using appropriate methods. The problem in estimating design flood discharge is usually found in ungauged watersheds which do not have any water discharge measuring equipment.This study wants to test the flood design method using rain data input to be applied to the Babak River, so the result can be used as a guide in the selection of flood discharge calculation techniques in other ungauged watersheds.The accuracy test is carried out by comparing the results of these methods with the flood design resulted from a frequency analysis of the Annual Maximum Series. Based on the results of the calculation, the peak flood of the Harpers method has the smallest RE and RMSEP values are 8.960% and 88.546 respectively. Thus, it can be concluded that the calculation of the design of the flood peak Haspers method has the best accuracy of the analysis results when compared with the Melchior and Weduwen methods for Babak River.