bluuebunny/crossref_metadata_2025_split huggingface dataset:
Electro-oxidation of glycerol and diglycerol in the presence of Pt or Pd-based
electrocatalyst follows by the reductive amination of the products obtained
Authors:   IC2MP, Universite De Poitiers,
            CNRS, De Oliveira Vigier Karine , Coutanceau Christophe ,   IC2MP, Universite De
            Poitiers, CNRS, Baranton Steve ,   IC2MP, Universite De
            Poitiers, CNRS
Published: November 2022

The selective electro-oxidation of bio-based organic molecules such as glycerol,
polyglycerols, saccharides and furanic compounds has received particular attention in
recent years, due to the high value-added compounds that result and their numerous
industrial applications.Â Electrochemical methods are therefore well suited for the
controlled oxidation of small organic molecules in aqueous media. Glycerol valorization
through partial oxidation is a good way of obtaining many different molecules with high
added value such as glyceric acid, tartronic acid, dihydroxyacetone, glyceraldehyde
etc., that can find various applications in different domains such as organic chemistry,
medical, and cosmetic industries. Here we have studied the electro-oxidation of glycerol
in the presence of Pt or Pd-based catalysts. The development of mono- and bimetallic
catalysts based on platinum on the one hand and palladium on the other hand for the
electro-oxidation of glycerol is a very important goal to direct the reaction pathways
to desired products. Â Â Â Â Â Â Â Â Â Â Â Bimetallic catalysts synthesized by the
water-in-oil microemulsion method were characterized by physicochemical (TEM, XRD, ATG,
SAA and ICP-OES) and electrochemical (active surface and surface composition study)
methods in order to obtain a correlation between surface structure and electrochemical
response. The reactivity of glycerol and diglycerol in alkaline medium was evaluated to
determine the catalyst offering the best conversion. A selectivity study of these
catalysts was performed by in situ infrared spectroscopy to determine the reaction
intermediates. The distribution of reaction products was determined by HPLC analysis and
1H and 13C NMR analyses. Â Â Â Â Â Â Â Â Â Â Â Reductive amination reactions
with ammonia on the one hand and n-butylamine on the other hand on products identified
as being of interest (glyceraldehyde/dihydroxyacetone) were carried out in the presence
of hydrogen and catalyzed by palladium-based nanoparticles dispersed on carbon.
Antioxidant activity of EGC (epigallocatechin) ester derivatives in food and
biological model system
Authors:   Memorial
            University, Peng Han , Shahidi Fereidoon ,   Memorial Univ of
            Newfoundland
Published: November 2022

Objective: Antioxidants retard oxidative processes in food and pharmaceuticals as
well as in the body. However, potential adverse effects of synthetic antioxidants and
insufficient efficacy of current natural/natural-derived antioxidant substitutes
necessitate developing novel antioxidants. Thus, EGC, as one of the most widely
distributed dietary flavanols, serves as an efficient natural antioxidant with numerous
health effects, but it is relatively poorly soluble in lipophilic media. In this study,
novel lipophilic EGC derivatives prepared via enzymatic esterification will be evaluated
in controlling oxidation in food and biological systems. Methods: EGC esters were
prepared under optimized reaction conditions, including enzyme type, substrate ratio
(Acyl acceptor/acyl donor), and reaction time. The purified products were then tested
for their antioxidant ability using Î²-carotene bleaching, LDL (low-density lipoprotein)
oxidation, and DNA scission assays. Results: In the Î²-carotene bleaching
assay, the oxidation inhibition of EGC and its esters was observed for about 80 min at
50â„ƒ by maintain the yellow colour and then decreased gradually with time. Meanwhile,
EGC monoesters (except EGC acetate and stearate) showed a significantly higher
inhibition rate than EGC. In the LDL oxidation assay, a similar downtrend of antioxidant
ability was observed. However, EGC exhibited higher antioxidant capacity compared to EGC
monoesters. In the DNA scission test, the EGC acylated with short-chain fatty acids
(C2-C6) showed the higher DNA stability than EGC or other EGC
monoesters. Conclusion: Overall, EGC monoesters displayed significant
antioxidant activity in all three assays. The results in biological/food systems were in
agreement with our previous chemical antioxidant tests. Moreover, the antioxidant
ability of EGC as a natural antioxidant was retained or even enhanced after
modification. Thus, acylated EGCs could serve as viable alternatives to traditional
synthetic antioxidants.
Glycemic Index Versus Wheat Fiber on Arterial Wall Damage in Diabetes: A Randomized Controlled Trial
Authors: Jenkins David J.A. , Chiavaroli Laura , Mirrahimi Arash , Mitchell Sandra , Faulkner Dorothea , Sahye-Pudaruth Sandhya , Paquette Melanie , Coveney Judy , Olowoyeye Omodele , Patel Darshna , Pichika Sathish Chandra , Bashyam Balachandran , Maraj Tishan , Gillett Chantal , de Souza Russell J. , Augustin Livia S.A. , Blanco Mejia Sonia , Nishi Stephanie K. , Leiter Lawrence A. , Josse Robert G. , McKeown-Eyssen Gail E. , Berger Alan R. , Connelly Philip W. , Srichaikul Korbua , Kendall Cyril W.C. , Sievenpiper John L. , Moody Alan R. 
Published: November 2022

OBJECTIVE
High cereal fiber and low-glycemic index (GI) diets are associated with reduced cardiovascular disease (CVD) risk in cohort studies. Clinical trial evidence on event incidence is lacking. Therefore, to make trial outcomes more directly relevant to CVD, we compared the effect on carotid plaque development in diabetes of a low-GI diet versus a whole-grain wheat-fiber diet.

RESEARCH DESIGN AND METHODS
The study randomized 169 men and women with well-controlled type 2 diabetes to counseling on a low GI-diet or whole-grain wheat-fiber diet for 3 years. Change in carotid vessel wall volume (VWV) (prespecified primary end point) was assessed by MRI as an indication of arterial damage.

RESULTS
Of 169 randomized participants, 134 completed the study. No treatment differences were seen in VWV. However, on the whole-grain wheat-fiber diet, VWV increased significantly from baseline, 23 mm3 (95% CI 4, 41; P = 0.016), but not on the low-GI diet, 8 mm3 (95% CI −10, 26; P = 0.381). The low-GI diet resulted in preservation of renal function, as estimated glomerular filtration rate, compared with the reduction following the wheat-fiber diet. HbA1c was modestly reduced over the first 9 months in the intention-to-treat analysis and extended with greater compliance to 15 months in the per-protocol analysis.

CONCLUSIONS
Since the low-GI diet was similar to the whole-grain wheat-fiber diet recommended for cardiovascular risk reduction, the low-GI diet may also be effective for CVD risk reduction.
Video Interaktif Berbasis Problem Solving sebagai Media Pembelajaran Unik bagi Siswa Kelas IV Sekolah Dasar
Authors: Laura Sesilia Dwi , Sujana I Wayan 
Published: November 2022

Latar belakang penelitian yaitu keterbatasan guru dalam penggunaan media ajar saat proses pembelajaran. Tujuan penelitian ini yaitu menguraikan rancang bangun media video pembelajaran interaktif dan menganalisis kelayakan media video pembelajaran interaktif. Model yang digunakan pada penelitian ini yaitu model ADDIE. Metode pada saat pengumpulan data penelitian yaitu kuesioner/angket. Subjek sebagai responden penelitian yaitu ahli dan siswa. Uji rancangan produk meliputi ahli mata pelajaran, ahli desain pembelajaran, ahli media pembelajaran, uji coba perorangan, dan uji coba kelompok kecil. Analisis yang digunakan yaitu analisis data kuantitatif serta kualitatif. Hasil penelitian menunjukkan bahwa persentase kelayakan media video pembelajaran interaktif menurut ahli isi pembelajaran yaitu sebesar 92,30%. Persentase kelayakan menurut ahli desain pembelajaran yaitu sebesar 97,50%. Persentase kelayakan menurut ahli media pembelajaran yaitu sebesar 100%. Tingkat persentase kelayakan menurut uji coba perorangan yaitu sebesar 96,66%. Tingkat persentase kelayakan menurut uji coba kelompok kecil yaitu sebesar 97,66% dengan keseluruhan berkualifikasi sangat baik. Berdasarkan hasil review para ahli dan hasil uji coba produk, dapat disimpulkan bahwa media video pembelajaran interaktif berbasis problem solving pada muatan IPS materi sumber daya alam layak untuk diimplementasikan pada kegiatan pembelajaran siswa kelas IV sekolah dasar.
Lembar Kegiatan Peserta Didik (LKPD) berbasis Problem Solving pada Materi Bakteri untuk Kelas X SMA/MA
Authors: Hidayati Hasri , Alberida Heffi , Arsih Fitri , Selaras Ganda Hijrah 
Published: November 2022

Belum terlaksana dengan baik, hal ini disebabkan guru dalam proses pembelajaran masih monoton, metode dan model pembelajaran masih bersifat konvesional. Selain itu, LKPD yang digunakan belum sesuai dengan model pembelajaran yang digunakan guru. Penelitian ini bertujuan untuk menciptakan lembar kegiatan peserta didik (LKPD) berbasis problem solving pada materi bakteri untuk Kelas X SMA/MA. Jenis penelitian ini merupakan penelitian pengembangan untuk menghasilkan LKPD yang valid. Subjek penelitian ini adalah 31 peserta didik kelas XI SMA serta 2 orang dosen dan 2 orang guru sebagai validator. Metode pengumpulan data menggunakan observasi dan kuesioner. Teknik analisis data menggunakan analisis kuantitatif. Hasil penelitian menunjukkan Objek penelitian ini adalah Lembar Kerja Peserta Didik berbasis Problem Solving pada materi Bakteri untuk Kelas X SMA/MA. Secara keseluruhan didapatkan rata-rata sebesar 88.62% dengan kriteria valid. Hal ini berarti LKPD berbasis problem solving yang dikembangkan sudah dapat digunakan dalam proses pembelajaran. Implikasi penelitian ini diharapkan dapat digunakan pada proses pembelajaran.
Booklet Sistem Ekskresi pada Manusia sebagai Suplemen Bahan Ajar Biologi Kelas XI SMA
Authors: Putri Nurul Hiza , Syamsurizal S. , Atifah Yusni , Fuadiyah Saâ€™diyatul 
Published: November 2022

Pemilihan media yang tepat sangat berpengaruh terhadap keberlangsungan proses pembelajaran. Media yang praktis dan menarik sangat berpengaruh terhadap peningkatan motivasi peserta didik untuk belajar. Booklet merupakan salah satu media pembelajaran berbetuk buku kecil yang dilengkapi gambar yang dapat dijadikan sebagai salah satu suplemen bahan ajar bagi peserta didik. Tujuan penelitian ini pengembangan produk berupa booklet sistem ekskresi pada manusia sebagai suplemen bahan ajar biologi kelas XI SMA. Pengembangan booklet menggunakan model pengembangan 4-D yang dilakukan sampai tahap develop (uji validitas). Penelitian divalidasi oleh 2 orang dosen Biologi dan 1 orang guru Biologi SMA. Hasil rata-rata nilai validitas booklet sebesar 87,68% dengan kategori sangat valid. Hasil validitas dinilai dari aspek kelayakan isi, kebahasaan, penyajian, dan kegrafikaan.Jadi, booklet sistem ekskresi pada manusia sebagai suplemen bahan ajar biologi kelas XI SMA dapat digunakan karena sudah dikatakan layak.
Multimedia Interaktif Bermuatan Game Tebak Kata tentang Materi Sistem Reproduksi pada Manusia untuk Peserta Didik Kelas XI SMA
Authors: Sari Nilmala , Yogica Relsas 
Published: November 2022

Kurangnya pemahaman materi siswa dalam proses pembelajaran memberikan dampak pada hasil belajar siswa. Guru hanya terpaku pada satu sumber buku ajar, sehingga siswa kesulitan dalam memahami materi yang bersifat abstrak. Penelitian ini bertujuan untuk menciptakan multimedia interaktif bermuatan game tebak kata tentang materi system reproduksi pada manusia untuk peserta didik kelas XI SMA. Pengembangan media dalam penelitian menggunakan model Instructional Development Institute (IDI). Metode pengumpulan data penelitian ini menggunakan metode wawancara, metode kuisioner dan instrumen skala likert. Teknik analisis data menggunakan analisis data dengan statistik deskriptif meliputi analisis validitas dan praktikalitas. Hasil penelitian ini yaitu hasil perhitungan rata-rata skor uji validitas diperoleh hasil bahwa rata-rata validitas yaitu 86,19% dengan kriteria valid. Hasil uji praktikalitas terhadap multimedia interaktif bermuatan game tebak kata oleh guru adalah 93,85% dengan kriteria sangat praktis dan peserta didik 90,57% dengan kriteria sangat praktis, sehingga dapat disimpulkan bahwa multimedia interaktif bermuatan game tebak kata dapat digunakan sebagai satu diantara media pendukung pada pembelajaran untuk materi sistem reproduksi pada manusia. Implikasi penelitian ini diharapkan dapat membantu siswa dalam proses pembelajaran dan guru dapat menggunakan multimedia interaktif bermuatan game tebak kata pada proses pembelajaran.
Role and Meaning of the Free Time in Context of Formation of Socio-Cultural Values in Modern Armenian Society
Authors: MKOYAN Gohar 
Published: November 2022

The article considers the problem of a culture of free time as a factor in the formation of modern society that has entered the era of globalization – with the respective opportunities for a variety of leisure activities and, at the same time, it may assume problematic situations for the person related to the effective use of leisure potential for the development of leisure culture of the person.
The aim of this study was to examine the role and free time value in the formation of social and cultural values in our society between two generations - today's youth (18 to 30 years) and the older generation (56 to 66 years), to identify the particular preferences in the environment of two generations in the field of leisure, to provide a comparative analysis and assessment of the data. The author had the task of considering the organization of free time as scientific and social problems, its effective implementation representatives of the two age groups, the disclosure of the content of free time of concept of culture. The research has used quantitative and qualitative methods of sociological research – unstructured data included observations, expert study using unstructured in-depth interviews, the survey (questionnaires), interviews by stratificat sampling in compliance with the proportions of the population structure by sex and age.
In the analysis, we stopped on such objective indicators of the quality of free time as a variety of leisure activities, especially the preferences of two generations in leisure activities (the prevalence of reading, resort to information and communication technologies, the frequency of visits to entertainment, cultural and leisure facilities, etc.).
The article explains the idea that free time acquires its true value when it is directed to the full development of the person and the acquisition of their socio-cultural values, as well as with the growth of free time, the role of self-development and reduced the share of inactive leisure.
Methodological Analysis of Political Participation Indicator Evaluation Tools
Authors: PETROSYAN Astghik 
Published: November 2022

The article analyzes issues of political participation. The article discusses main stages and features of formation of the concept of political participation in sociology and political science. Definition of political participation is offered based on the analysis of the interpretations available in professional literature. Political participation is involvement of citizens (in the broader sense including public subjects like organizations, groups, etc.) in political processes, decision making ceremonies, as well as citizen influence on the formation of political systems and institutions, their operation, drafting political decision. Several classifications of political engagement are observed: conventional and unconventional; orthodox and unorthodox, offensive; latent and evident; individual and collective; direct and indirect; acceptable active, acceptable passive, unacceptable active and unacceptable passive, and so on.
Based on logical operationalization, the toolkit for political participation types and index assessment is analyzed. Proposal is made to implement a more comprehensive and sensitive chart. Some attractive results gained after employing a survey in the RA are presented.
Wpływ sposobu przygotowania rozsady na plonowanie papryki ostrej (Capsicum annuum L.)
Authors: Buczkowska Halina Barbara , Mysiak Barbara 
Published: November 2022

Papryka ostra należy do roślin uprawianych z rozsady przygotowywanej w doniczkach. W przeprowadzonym doświadczeniu prześledzono wpływ uproszczonych sposobów przygotowania rozsady na plonowanie trzech polskich odmian papryki ostrej: Bronowicka Ostra, Orkan, Rokita. Zastosowano cztery sposoby produkcji rozsady: doniczkopalety stożkowe; doniczkopalety okrągłe; doniczki pojedyncze z dwoma siewkami; doniczki pojedyncze z jedną siewką. Uzyskany plon handlowy wskazuje na przydatność doniczkopalet stożkowych i okrągłych do produkcji rozsady papryki, które zapewniają mniejsze o 50% zużycie podłoża w porównaniu z doniczkami pojedynczymi. Nieracjonalne jest przygotowanie rozsady w doniczkach pojedynczych z dwiema roślinami ze względu na nieadekwatną zwyżkę plonu i wykorzystanie dwukrotnie większej liczby nasion. Sposób przygotowania rozsady nie decydował o zawartości oznaczanych składników chemicznych. Oceniane odmiany nie różniły się plonem handlowym owoców. Wykazano natomiast istotne zróżnicowanie między ocenianymi odmianami w zawartości w owocach suchej masy (%), kwasu L-askorbinowego (mg·100 g–1), cukrów ogółem (g·100 g–1), oraz kapsaicyny (%).
Genotoxic effect of cadmium and zinc in the peripheral erythrocytes of Prussian carp (Carassius gibelio B.)
Authors: Drąg-Kozak Ewa , Kuchta-Gładysz Marta , Grzesiakowska Anna , Łuszczek-Trojnar Ewa , Socha Magdalena 
Published: November 2022

Abstract

Introduction
Cadmium and zinc are often found in aquatic environment and may accumulate in living organisms. The aim of this study was to evaluate the genotoxic effect of Cd, Zn, and their binary mixture on the peripheral blood erythrocytes of Prussian carp (Carassius gibelio B.).

Material and Methods
The fish were exposed to 4.0 mg/L Cd, 4.0 mg/L Zn or a mixture of 4.0 mg/L Cd and 4.0 mg/L Zn for a period of 14, 21 or 28 days. Genotoxic effects were investigated in peripheral blood cells using the comet assay and the erythrocyte micronucleus assay.

Results
The results demonstrated that the frequencies of micronuclei (MN) and both nuclear and cellular abnormalities in erythrocytes were significantly higher in all exposure groups as compared to the control group. The fish exposed to the mixture of Cd and Zn presented the highest frequency of MN. Furthermore, there was a decrease in the frequency of MN and an increase in the occurrence of DNA integrity defects (DNA damage) with longer time of exposure to the metals studied.

Conclusion
Erythrocyte micronucleus and comet assays confirmed the genotoxicity of Cd and Zn. The results of the tests applied (which showed considerable variability) suggest the involvement of various toxicity mechanisms. Therefore, an integrative and comprehensive approach, using a set of assays for toxicity profile determination, should be adopted during ecotoxicological studies and environmental risk assessment pertaining to these elements.
Faktor-Faktor yang Memengaruhi Minat Beli Smartphone Xiaomi pada Pengguna Smartphone di Jakarta
Authors: Yonathan Nico , Lego Yenny 
Published: November 2022

Tujuan dari penelitian ini adalah untuk mengetahui pengaruh e-wom, kepercayaan, dan citra merek terhadap minat beli smartphone Xiaomi pada pengguna smartphone di Jakarta. Menggunakan metode non-probability sampling dan teknik pengambilan sampel dengan purposive sampling. Menyebarkan kuesioner secara online dan berhasil mendapatkan 112 responden. Kemudian menganalisis data dengan PLS-SEM menggunakan program SmartPLS 3.0. Hasil penelitian menunjukan bahwa e-wom, kepercayaan, dan citra merek memberikan pengaruh secara positif dan signifikan terhadap minat beli smartphone Xiaomi pada pengguna smartphone di Jakarta.

The purpose of this study was to determine the effect of e-wom, trust, and brand image on interest in buying Xiaomi smartphones among smartphone users in Jakarta. Using non-probability sampling method and sampling technique with purposive sampling. Distributed the online questionnaire and managed to get 112 respondents. Then analyze the data with PLS-SEM using the SmartPLS 3.0 program. The results showed that e-wom, trust, and brand image had a positive and significant influence on buying interest in Xiaomi smartphones on smartphone users in Jakarta.
PENGGUNAAN METODE PERMAINAN KARTU KATA BERGAMBAR DALAM PENINGKATAN MINAT BELAJAR SISWA
Authors: Sabri Sabri , Dalimunthe Mandasari 
Published: November 2022

AbstractThis study aims to determine whether the use of the picture word card game method can increase the interest in learning Citizenship Education in class IV MIN 2 Padangsidimpuan students. This research is a classroom action research. This study uses a qualitative method. The subjects in this study were class IV A with 38 students. The data collection instruments used were questionnaires and observations. Data analysis used a quantitative approach with statistical methods. Based on the research carried out, it was concluded that the interest in learning Citizenship Education in class IV A students could be increased by using the picture word card game method. This increase can be seen from the results of questionnaires and observations. The results of the action using a questionnaire in cycle I with an average value of 97.31, cycle II 104.86, and cycle III 113.65. While the results of the action using observations in the first cycle was 86.83%, the second cycle was 91.44%, and the third cycle was 95.39%. Judging from the results of the action cycle I to cycle III there is an increase in the number of values which indicates an increase in interest in learning Citizenship Education. Keywords: Picture Word Card Game Method; Interest to learn; Citizenship Education
GURU SEBAGAI PROFESI PADA PENDIDIKAN DASAR
Authors: Siregar Lis Yulianti Syafrida 
Published: November 2022

AbstractBase of education is one of effort for develop potential from human with professional. Substantially, reformation of education in now days is for making education back to education’s character. Teacher is an actor in education. Up till now, teacher have been made as profession but treatment to teacher not reflect that job as a teacher is profession Keywords: education, profession, teacher.