bluuebunny/crossref_metadata_2025_split huggingface dataset:
Competence kinetic and thermodynamic studies between natural bio-adsorbent green microalgae and synthetic adsorbent magnetic nanoparticles for copper(II) ion in water
Authors: Ibrahim Hamadamin Shireen , Saaduldeen Anwer Sewgil , Hassan Sdiq Kwestan , Mohsin Abdulkareem Parween 
Published: November 2022

ABSTRACT. The present work investigated the kinetic and thermodynamic study of adsorbents to remove copper ions from aqueous solutions and compared the efficiency between the natural microalgae bio-adsorbent chlorella species (sp.) and synthetic magnetic nanoparticles. All materials synthesized and characterized by Fourier transform infrared (FT-IR), scanning electron microscope (SEM), energy dispersive X-ray (EDX). The highest Cu+2 ion adsorption for the copper solution at 100 mg/L was 57.2%, while at pH 8 it was 59.7%. The more efficient adsorbent for Cu+2 acquired by chlorella was 0.24 mg/g. The second-order kinetic model is fitted, the activation energy (Ea) for the three adsorbents; Chlorella, Fe3O4, (Fe3O4 coated with SiO2) were 95.24, 40.69, 20.39 kJ/mol, respectively indicating the adsorption process is slower than the magnetic nanoparticles. Enthalpy activation changes (ΔH#) were endothermic and showed that the adsorption of the Cu+2 on the chlorella was chemisorption and on the magnetic nanoparticles was physisorption. Entropy change of activation (ΔS#), and activation Gibbs free energy change (ΔG#) showed that adsorption process of Cu+2 on the three adsorbents was feasible and spontaneous in temperature range 293-313 K. The novelty of this work is to determine the type and efficiency of adsorption of algae and nanoparticles.

KEY WORDS: Adsorption, Kinetic models, Thermodynamic studies, Chlorella species, Magnetic nanoparticle, Efficiency percent
Bull. Chem. Soc. Ethiop. 2023, 37(1), 183-196.
DOI: https://dx.doi.org/10.4314/bcse.v37i1.15
Investigation of lead removal from aqueous solutions using modified natural clay: Kinetics and thermodynamics approaches
Authors: Ekmekyapar Torun Fatma , Kısacıkoğlu Raziye 
Published: November 2022

ABSTRACT. In this study, the natural clay was modified and removal of Pb2+ ions synthetically prepared aqueous solutions using this modified clay was investigated. The parameters affecting the adsorption efficiency were examined in the study. In the result of studies, the suitability of the adsorption data to classic adsorption models, and adsorption kinetics were determined. In the experiments, it has been determined that pH 5 provides optimum removal conditions of adsorption and adsorption reached equilibrium in approximately 15 min. The highest removal efficiency was found to be 82.13% with the addition of 3 g L-1 adsorbent at a stirring speed of 200 rpm. As the lead concentration of the wastewater increases, the amount of lead retained per dry unit weight of the modified natural clay also increases. Experimental data showed that Pb2+ removal was consistent with Temkin adsorption model. Calculated thermodynamic constants showed that adsorption is exothermic and physical.

KEY WORDS: Adsorption, Isotherm, Lead removal, Natural clay, Thermodynamic constants
Bull. Chem. Soc. Ethiop. 2023, 37(1), 231-244.
DOI: https://dx.doi.org/10.4314/bcse.v37i1.18
Polyaniline-tin(IV) molybdophosphate composite exchanger: Photocatalytic behavior and antibacterial activitiy
Authors: M. Taddesse Abi , Assefa Sime Belayneh , Kebede Tessema Tesfahun 
Published: November 2022

ABSTRACT. Polyaniline-tin(IV)molybdophosphate composite exchanger was prepared using sol–gel method by mixing polyaniline gel into the inorganic precipitates of tin(IV)molybdophosphate. The composite ion exchanger was characterized by various techniques such as XRD, UV-Vis, FTIR, SEM-EDX, and PL. Photocatalytic activities and antibacterial efficiencies of the bare polymer polyaniline (PANI), the inorganic exchanger tin(IV)molybdophosphate (TMP) and the composite polyaniline-tin(IV)molybdophosphate (PANI-TMP) were evaluated using methylene blue (MB) dye as a model organic pollutant and Gram negative and Gram positive bacteria as test microbes, respectively. Photocatalytic and antibacterial activities of polyaniline[1]tin(IV)molybdophosphate composite was found to be higher than that of organic (polyaniline) and inorganic (tin(IV)molybdophosphate) counterparts. The results obtained indicated the degradation efficiency of approximately 73% in 180 min exposure time. Effect of scavengers study evidenced the most important species in the degradation process to be (·O2 - ) and (·OH). Highest photocatalytic degradation efficiency for the composite exchanger studied was obtained at initial concentration of 10 mg/L MB, 100 mg/L of catalyst load and a pH of 8. Antibacterial efficiency of the exchanger over both Gram negative and Gram positive bacteria was found to be higher than the single counterparts.
KEY WORDS: Ion exchangers, Antimicrobial activity, Composites, Photocatalysis, Polyaniline
Bull. Chem. Soc. Ethiop. 2023, 37(1), 59-76.
DOI: https://dx.doi.org/10.4314/bcse.v37i1.6
Oko mysli: Agnes Arberová k otázce biologického hlediska
Authors: Pudil Matěj 
Published: November 2022

The study reflects the philosophical analysis of scientific research carried out by the botanist Agnes Arber in the 1950s. Her concept entails a valuable contribution to the question of the context of scientific discovery and the process of its rationalization in biological disciplines. I will try to show that her considerations are fundamentally phenomenological, and thus the comparison with the thoughts of Maurice Merleau-Ponty on the topic of corporeal nature of senses is useful. Such an interpretation suggests that Arber, similarly to Merleau-Ponty (though using different terminology), considers phenomena not as objects that can be examined separately, but as representing a phenomenal field in which phenomena arise in the con-text of past experience. According to her, the orientation in the subject of a study is a question of equilibrium, which a researcher actively seeks.
Structuralism in Social Science: Obsolete or Promising?
Authors: Menšík Josef 
Published: November 2022

The approach of structuralism came to philosophy from social science. It was also in social science where, in 1950–1970s, in the form of the French structuralism, the approach gained its widest recognition. Since then, however, the approach fell out of favour in social science. Recently, structuralism is gaining currency in the philosophy of mathematics. After ascertaining that the two structuralisms indeed share a common core, the question stands whether general structuralism could not find its way back into social science. The nature of the major objections raised against French structuralism – concerning its alleged ahistoricism, methodological holism and universalism – are reconsidered. While admittedly grounded as far as French structuralism is concerned, these objections do not affect general structuralism as such. The fate of French structuralism thus does not seem to preclude the return of general structuralism into social science, rather, it provides some hints where the difficulties may lie.
ESG Scores - Is it the new way to build a European portfolio?
Authors: Boido Claudio , Ceccherini Paolo , D'Imperio Alessia 
Published: November 2022

Abstract

The study makes a comparison between the performance of equity portfolios characterized by high ESG score stocks and portfolios with low ESG score stocks. In particular, we analyze three ESG scores: MSCI ESG Rating, Sustainalytics scores and S&P DJI/Robeco ESG Scores, by examining the European stock market in two periods: medium/long term (five years) and short-term (one year). First of all, we associate each component of the index in relation to its MSCI ESG Rating, Sustainalytics score and S&P DJI/Robeco ESG Scores. We build two portfolios:
•	First quartile portfolio 1Q (according to MSCI; Sustainalytics; and S&P DJI/Robeco ESG Scores), including securities of companies with the highest ESG score, based on ESG best-in-class screening strategy.
•	Fourth quartile portfolio 4Q (according to MSCI; Sustainalytics; and S&P DJI/Robeco ESG Scores), including securities of companies with the lowest ESG scores.
We aim to answer the following questions: a) do portfolios with higher ESG scores stocks lead to better performances than those including stocks with low ESG scores? b), Are there some sectors that drive the performance within the sector breakdown?
Results show a divergence between the composition of the first quartile, whereas there is more homogeneity in the fourth quartile.

JEL classification numbers: G10, G11, F65
Keywords: ESG factor; asset management; sustainability finance. Schwarz's inequality, Triangle inequality.
Preferensi Konsumsi Pinang Kering di Kecamatan Biboki Selatan Kabupaten Timor Tengah Utara
Authors: Januaria Seuk  , Agustinus Nubatonis  , Boanerges Putra Sipayung  , Mardit Nikodemus Nalle  
Published: November 2022

Pinang kering merupakan salah satu bahan yang dicampur dengan sirih untuk dikonsumsi. Pemanfaatan akan pinang oleh sebagian besar masyarakat yang ada di Indonesia pun berbagai macam mulai dari kebutuhan kesehatan, industri, kecantikan hingga kebutuhan konsumsi sehari-hari dalam rumah tangga. Di Indonesia pinang merupakan tanaman yang memiliki simbol dan makna tersendiri yang mungkin sebagian besar masyarakat tidak memilikinya. Kecamatan Biboki Selatan Konsumsi pinang kering iris suda berlangsung lama dan terus berkembang hingga saat ini. Hal inilah yang membuat tingkat konsumsi pinang kering iris di Kecamatan Biboki Selatan cukup tinggi. Penelitian ini untuk mengetahui faktor yang mempengaruhi keputusan konsumen dan preferensi konsumsi pinang kering iris pada masyarakat Kecamatan Biboki Selatan. Penelitian ini dilaksanakan di Kecamatan Biboki Selatan Kabupaten Timor Tengah Utara pada bulan Februari-Maret 2022. Metode analisis data yang digunakan adalah deskriptif kualitatif dan analisis regresi logistik. Hasil penelitian menunjukan variabel usia, jenis kelamin, kebiasaan, rasa, dan tekstur secara bersama-sama berpengaruh terhadap preferensi konsumsi pinang kering iris. Variabel Jenis Kelamin, kebiasaan, rasa, dan tekstur dari pinang kering iris memiliki pengaruh yang signifikan terhadap keputusan masyarakat Kecamatan Biboki Selatan dalam mengkonsumsi pinang kering iris sedangkan variabel rasa dan tekstur menjadi preferensi konsumen untuk memilih pinang kering iris yang akan dikonsumsi.
Pemberian Pakan Substitusi Fodder Jagung terhadap Produktifitas Ternak Kelinci
Authors: M. Aprilia Sanger  , Sritiasni  , Nani Zurahmah  , Bangkit Lutfiaji Syaefullah  
Published: November 2022

Penelitian ini bertujuan untuk mengetahui efektifitas pakan substitusi fodder jagung terhadap produktifitas kelinci. Penelitian ini dilaksanakan dengan menggunakan metode dalam kajian ini yaitu Rancangan acak lengkap yang terdiri dari 4 perlakuan dan 3 ulangan sehingga terdapat 12 unit percobaan dan setiap unit memiliki 1 ekor kelinci dengan jenis rex dan berumur 18 minggu. Adapun perlakuan yang di uji yaitu pemberian rumput dan fodder jagung yang mana P0 tanpa fodder jagung, P1 menggunakan fodder jagung 5%, P2 menggunakan fodder jagung 10%, dan P3 menggunakan fodder jagung 15%. Pengambilan data dilakukan 4 kali selama 1 bulan, dilakukan dengan parameter yang teliti yaitu pertambahan bobot badan, pertambahan bobot badan harian, konsumsi pakan dan konversi pakan. Hasil yang dapat diketehui bahwa pertambahan bobot badan 900 g/ekor/30 hari (P2), Pertambahan bobot badan harian 32.14 gram (P2), konsumsi pakan 136.2067 gr (P3) dan konversi pakan 4.83 gram/ekor (P2).
Pemanfaatan Fermentasi Buah Maja (Aegla marmelos) sebagai Upaya Meningkatkan Produktivitas Ayam Broiler
Authors: Faisal Maulana Ibrahim  , Aswandi Aswandi  , Nurtania Sudarmi  
Published: November 2022

Krisis pangan global menjadi polemik yang perlu diatasi bersama. Generasi milenial pertanian berperan penting dalam meresonasi inovasi teknologi. Salah satunya dengan memanfaatkan tanaman lokal untuk meningkatkan produktivitas ternak. Penggunaan feed additive sebagai alternatif pengganti antibiotik pada pakan sangat berguna untuk menjaga performa kesehatan ayam broiler. Berdasarkan hal tersebut, penelitian ini bertujuan untuk memanfaatkan fermentasi buah maja sebagai upaya peningkatan produktivitas ayam broiler. Adapun variabel yang diamati meliputi pengukuran pakan total, bobot total panen, dan FCR ayam broiler. Penelitian dilakukan dengan pembuatan fermentasi buah maja selama dua minggu, dilanjutkan dengan metode eksperimental in vivo pada ayam broiler selama 30 hari. Hasil penelitian menunjukkan bahwa pemanfaatan fermentasi buah maja dalam air minum belum memberikan pengaruh terhadap konsumsi pakan total, bobot panen ayam, serta FCR. Namun demikian, fermentasi buah maja dapat diberikan pada ayam broiler tanpa memberikan efek buruk.
Pengaruh Penggunaan Limbah Perkebunan sebagai Bahan Litter terhadap Bobot Organ Pencernaan Ayam Broiler
Authors: Nurcholis Nurcholis  , Abdul Azis  , Berliana Berliana  
Published: November 2022

Permintaan akan serutan kayu sebagai bahan litter semakin kompetitif dengan meningkatnya usaha peternakan ayam pedaging. Kelimpahan dari limbah perkebunan, seperti sabut kelapa, ampas tebu dan pelepah sawit merupakan sumberdaya terbarukan dapat dimanfaatkan sebagai alternatif bahan litter untuk alas lantai kandang. Penelitian ini bertujuan untuk mengetahui pengaruh penggunaan serutan kayu, sabut kelapa, ampas tebu, dan pelepah sawit sebagai bahan litter terhadap bobot organ pencernaan ayam broiler. Sebanyak dua ratus anak ayam broiler didistribusikan dalam bahan litter yang berbeda. Empat bahan litter yang digunakan adalah serutan kayu (P0 sebagai kontrol), sabut kelapa (P1), ampas tebu (P2), dan pelepah sawit (P3). Penelitian ini menggunakan rancangan acak lengkap dengan 4 perlakuan dan 5 ulangan. Semua ayam dipelihara dalam kondisi lingkungan yang sama di kandang terbuka. 5 ekor ayam/unit kandang (25 ekor/perlakuan) dipilih sebagai sampel untuk penentuan bobot organ pencernaan. Hasil penelitian menunjukkan bahwa penggunaan bahan litter seperti sabut kelapa, ampas tebu dan pelepah sawit tidak berbeda nyata (P>0,05) pada bobot potong, dan bobot organ pencernaan, kecuali bobot gizzard lebih tinggi (P<0,05) pada ayam pedaging dipelihara pada serutan kayu. Disimpulkan bahwa bobot relatif gizzard pada ayam broiler yang dipelihara dengan serutan kayu secara nyata lebih tinggi dibandingkan dengan sabut kelapa, ampas tebu dan pelepah sawit.
Pengaruh Likuiditas, Solvabilitas, dan Aktivitas Terhadap Harga Saham Perusahaan Sektor Healthcare yang Terdaftar di Bursa Efek Indonesia
Authors: Sari Sarah Nurlita , Fatimah Fatimah , Choiriyah Choiriyah 
Published: November 2022

This study aims to determine the effect of liquidity, solvency, and activity on stock prices in healthcare sector companies listed on the Indonesia Stock Exchange. Sampling using non-probability sampling with purposive sampling method, the sample used is 13 companies. The data required is secondary data obtained from the Indonesia Stock Exchange through the website www.idx.co.id and the data collection method is using the documentation method. The analysis technique used in this research is multiple linear analysis technique, classical assumption test and hypothesis testing. The results of the multiple linear regression Y = 47.647 + 243.648X1 + 232.689X2 + 582.943X3), F test (simultaneous test) with Significant of F 0.000 < 0.05, meaning that there is an influence between Liquidity, Solvency, and Activity together on stock prices and t test (Partial Test) on Significant Liquidity 0.000 < 0.05. Thus it can be concluded that Liquidity has a significant influence on prices stocks, the Significant Solvency is 0.034 <0.05. Thus it can be concluded that Solvency has a significant effect on stock prices, Significant Activity is 0.000 < 0.05 thus it can be concluded that activity has a significant effect on stock prices
Pengaruh Motivasi, Disiplin dan Lingkungan Kerja Terhadap Kinerja Tenaga Pengajar Lembaga Pendidikan iSMART di Kota Palembang
Authors: Silvyana Silvyana , Moelyatie Trisniarty Adjeng , Nurrahmi Maftuhah 
Published: November 2022

This research aims to determine the influence of motivation, discipline, and work environtment on employee performance at Lembaga Pendidikan iSMART Palembang. Associative research methods with multiple linear regression and analysis technique. The sampling technique was simple sampling, by taking the entire sample of 115 respondents. The results showed that : (1) motivation, discipline and work environment partially significant effect on employee performance at Lembaga Pendidikan iSMART Palembang. (2) motivation, discipline and work environment simultaneously significant effect on employee performance of teachers at Lembaga Pendidikan iSMART Palembang
Genetic variants IL1B +3954C>T and -511C>T associated with incapacity and allodynia in migraine
Authors: Silva Aline Vitali da , Khouri Barbara Ferreira , Rezende Debora Villas Boas , Pezzini Ana Paula Gallina , Espinosa Beatriz Rabello , Ahrens Tainah Mendes , Antonucci Adriano Torres , Bello Valéria Aparecida , Frederico Regina Célia Poli , Coral Carlos Eduardo , Reiche Edna Maria Vissoci , Simão Andrea Name Colado 
Published: November 2022

IntroductionThe main mechanisms in the physiopathology of migraine are cortical spreading depression and trigeminal activation with the release of CGRP. Neurogenic inflammation and neuroinflammation can exert an influence over both these mechanisms, but there are still a number of gaps in our understanding. Interleukin (IL)- 1β is a pro-inflammatory cytokine whose levels of plasma increase during the attack phase of migraine. Thus far, its genetic variants have not been well studied.
ObjectiveTo investigate the association between the genetic variants IL1B +3954C>T (rs1143634) and -511C>T (rs16944) and susceptibility to migraine and its clinical characteristics.
Subjects and MethodsCase control study comprising 307 participants, of whom 152 had a diagnosis of migraine and 155 were healthy controls, paired by sex, age, ethnicity and BMI. The clinical and demographic data were evaluated. The patients with migraine were interviewed using a structured form containing information about the type of migraine (with or without aura, episodic or chronic), age at onset of the disease, frequency of attacks, accompanying symptoms that triggered headaches. The patients also answered validated questionnaires to evaluate incapacity (Migraine Disability Assessment - MIDAS) and impact (Headache Impact Test - HIT-6) for migraine, the presence of allodynia (ASC-12), as well as symptoms of anxiety (State Anxiety Inventory - STAI 1 and 2), depression (Beck Depression Inventory) and a hyperacusis scale.The genetic variants IL1B +3954C>T (rs1143634) and -511C>T (rs16944) were identified using polymerase chain reaction (PCR) and the fluorescence levels of PCR products were evaluated using a Step One thermocycler (Applied Biosystems). The analyses were conducted using the dominant, codominant, recessive and over- dominant genetic models. Categorical data were evaluated via the chi-squared test or Fisher’s exact test, and continuous data were evaluated using the Mann-Whitney test. (To see the complete abstract, please, check out the PDF).
Assessing the influence of migraine on the prognosis of ischemic stroke: a prospective cohort study
Authors: Oliveira Felipe Araújo Andrade de , Dourado Filho Mario Genuíno , Rocha-Filho Pedro Augusto Sampaio 
Published: November 2022

Abstract
Introduction
There is controversy as to whether migraine implies a poorer prognosis after the stroke.
Objectives
To assess whether migraine implies a poorer prognosis after the stroke.

Methods
This was a prospective cohort study carried out in a hospital in the city of Recife, Pernambuco, Brazil. We included consecutively hospitalized patients with ischemic stroke within 72 hours of symptom onset. A diagnosis of ischemic stroke was made by the presence of a diffusion restriction pattern on the MRI within a compatible clinical context. Patients were assessed by a neurologist who conducted an interview using a semi-structured questionnaire containing questions regarding sociodemographic data, the presence and characteristics of headaches in their lives and the related clinical condition to ischemic stroke. The headaches presented were classified according to the diagnostic criteria of the third edition of the International Classification of Headache Disorders. The National Institute of Health Stroke Scale and the modified Rankin scale were used. Patients underwent MRI of the brain with diffusion and with perfusion. Patients were assessed by telephone 3 months after the stroke to determine the prognosis.
Results
A total of 221 patients were included, 59.3% of whom were male, and a mean age of 68.2 ± 13.8 years. One hundred and seventy-eight patients (178/221; 81%) were assessed 3 months after the ischemic stroke. Migraine was not associated with the stroke prognosis (logistic regression).
Conclusion
Migraine is not associated with the prognosis of ischemic stroke.
Key-Words: Cerebrovascular Disease, Ischemic Stroke, Migraine, Stroke outcome.
Release of CGRP in vivo from rat dura mater: Influence of capsaicin and topiramate
Authors: Costa Raisa Ferreira , Rosas Emanuela Paz , Oliveira Daniella Araújo de , Valença Marcelo Moraes 
Published: November 2022

Introduction
Migraine is a disease that stands out for its high prevalence with changes in the nervous system, abnormal levels of neurotransmitters, neuromodulators, and neuropeptides. The main mechanisms of action of capsaicin are chemical induction through the activation of TRPV1 channels, allowing calcium influx into neurons in the trigeminal ganglion of the dura mater, activating mast cell degranulation, releasing pro-inflammatory (e.g., histamine, oxide nitric) and vasoactive (e.g., CGRP and substance P) substances. For treatment, classes of drugs are used to act on blood vessels and to prevent vasodilation, as well as depolarization of sensory fibers of the dura mater.
Objectives
To better understand sterile inflammation after exposing the dura mater bilaterally, we created an experimental model to study mechanisms of action of topiramate and capsaicin in mast cell degranulation and release of CGRP in a rat skull preparation in vivo using anesthetized animals.
Methods
Thirty-five Wistar rats were used, divided into two groups of chronic topiramate (GTC) treated with 20mg/kg/day, gavage/10 days, and acute topiramate (GTA) in situ in the dura mater (10-3M). The animals were anesthetized and cranial windows between the coronal and lambda sutures in the hemicraniums were performed with a drill to expose the dura mater bilaterally. 10-3M capsaicin was placed on the right side and synthetic interstitial fluid on the left side and exposed to contact for 10 minutes to a small cotton ball soaked with the respective solutions so that there is no leakage of the treatment, and posteriorly kept in the freezer (-20°C) for later quantification of CGRP. The percentage of degranulated mast cells was quantified after removal of the dura mater by staining it with toluidine blue. A commercial enzyme immunoassay quantified the release of CGRP from the cranial dura mater...
(Too see the complet abstract, please, check out the PDF.)