bluuebunny/crossref_metadata_2025 huggingface dataset:
HUBUNGAN PENGETAHUAN, SIKAP, DUKUNGAN KELUARGA DAN DUKUNGAN PETUGAS KESEHATAN TERHADAP PEMBERIAN ASI EKSKLUSIF DI WILAYAH KERJA PUSKESMAS KEMARAYA KOTA KENDARI TAHUN 2022
Authors: AZZAHRA LUNA AULIA , JUMAKIL JUMAKIL , AKIFAH AKIFAH
Published: September 2023

Latar belakang: ASI eksklusif adalah air susu yang diberikan kepada bayi langsung setelah lahir sampai 6 bulan tanpa tambahan makanan atau minuman yang lain. Pengetahuan mempunyai peran penting dalam perilaku ibu tentang ASI eksklusif akan membawa pemahaman yang mendalam pada ibu tentang dampak baik atau buruknya memberikan ASI secara eksklusif. Sikap ibu dalam pemberian makan bayi telah terbukti menjadi prediktor independen yang lebih kuat dari inisiasi menyusui. Faktor dukungan keluarga juga merupakan salah satu hal yang sangat berpengaruh dalam hidup karena keluarga selalu memberikan dukungan untuk mencapai suatu keberhasilan. Tujuan: untuk mengetahui hubungan pengetahuan, sikap, dukungan keluarga, dan dukungan petugas kesehatan terhadap pemberian ASI eksklusif di Wilayah Kerja Puskesmas Kemaraya Kota Kendari Tahun 2022. Metode: Penelitian ini adalah penelitian survei analitik dengan pendekatan cross sectional study, merupakan rancangan penelitian yang pengukuran atau pengamatannya dilakukan secara srimultan pada satu saat dan bertujuan untuk mencari hubungan antara variabel independen dengan variabel dependen. Hasil: Berdasarkan hasil penelitian yang di lakukan, di dapatkan hasil bawaha H0 di tolak dan Ha diterima yang berarti ada hubungan pengetahuan, sikap, dukungan keluarga, dan petugas kesehatan terhadap pemberian asi eksklusif di wilayah kerja puskesmas kemaraya kota kendari tahun 2022.
Numerical Analysis of Battery Thermal Management System of Electric Vehicle
Authors: Lai Qit Inn  , A. N. Oumer  , Azizuddin Abd Aziz  , Januar Parlaungan Siregar  , Tezara Cionita
Published: September 2023

This study is modelling the direct liquid cooling system of battery used in Electric Vehicle. The purpose of the study is to investigate the performance of the Li-ion battery model under different input of parameters and to evaluate the optimum parameters for the battery thermal management system model to maintain at its peak performance. SolidWorks and ANSYS are used to model and simulate the battery whereas MINITAB software is selected for conducting the statistical analysis. Heat flux, mass flow rate at the inlet and the thickness of the battery model has been selected as input of the simulation. The obtained results show that the heat transfer coefficient is increasing with the higher heat flux and mass flowrate but decreasing with the thickness of the battery model. Pressure drop remains constant when heat flux varies but increasing with mass flow rate and inversely proportional with the thickness of battery. For statistical analysis, an optimum value for the parameters is proposed to maintain the battery to operate with a highest heat transfer coefficient but lowest in pressure difference. Overall, the study has been conducted successfully and fulfilled the objectives stated.
A Proposed Seaplane Float in Water Entry Problem and Landing in Waves using Particle Based Method
Authors: Dimas Bahtera Eskayudha
Published: September 2023

Seaplane is the newly transportation mode which is developed in the Indonesian Archipelago Region. Originally, the seaplane is equipped by pair of the floats in function to withstand the aircraft load and maintain the seaplane on the water stably. One of the critical moments in the seaplane operation is in the landing phase in waves. The failure in the float performance can be led into severe conditions, even the capsize. In this paper, the aims are to determine the water impact characteristics and response of the proposed seaplane float by implementing the water entry case, calm water landing, and when landing in the periodic waves condition. The numerical model was developed using DualSPHysics based on Smoothed Particle Hydrodynamic to obtain more realistic and accurate prediction of the pressure, velocity fields, and water spray motion with droplets in complex shape of the float. According to numerical results and reproducible experimental data in this study, the 2D water entry and 3D calm and waves water problem were applied to reproduce the detailed characteristics of the interaction between the proposed seaplane float and the water surface with splashing. The paper showed that the developed model could be a useful tool to design the seaplane float for Indonesian seaplane in the future
Kajian Fluktuasi Muka Air Tanah dan Kualitas Air Tanah Dangkal Berbasis Sistem Informasi Geografis (SIG) di Kecamatan Denpasar Utara Kota Denpasar
Authors: Ardana Putu Doddy Heka , Diasa I Wayan , Aisyah Siti
Published: September 2023

Peningkatan urbanisasi dan konsumsi air menyebabkan air tanah telah dieksploitasi secara berlebihan dengan konsekuensi berfluktuasinya muka air tanah dan degradasi kualitas air tanah. Fluktuasi muka air tanah dan kualitas air tanah merupakan parameter penting dalam pengelolaan sumber daya air tanah berkelanjutan. Penelitian ini bertujuan mengetahui fluktuasi muka air tanah dan kualitas air tanah dangkal di wilayah Kecamatan Denpasar Utara. Metode yang digunakan dalam penelitian ini adalah metode penelitian eksperimen dimana melakukan pengamatan terhadap level muka air tanah dan menguji kualitas air tanah untuk nantinya dianalisis secara spasial dengan menggunakan perangkat lunak ArcGIS. Berdasarkan penelitian ini dapat disimpulkan bahwa fluktuasi muka air tanah pada daerah penelitian berkisar pada kedalaman 0 – 9 meter di bawah muka tanah dan berfluktuasinya muka air tanah tersebut dipengaruhi oleh faktor-faktor hidrometeorologi utamanya adalah musim hujan dan musim kemarau. Kualitas air tanah dangkal (sumur gali) di Kecamatan Denpasar Utara, yang ditinjau dari parameter fisika dan kimiawi, dapat dinyatakan baik atau layak untuk digunakan dalam memenuhi kebutuhan higienis dan sanitasi masyarakat karena nilainya masih berada di bawah baku mutu yang ditetapkan.
Pengaruh Dinding Bata Bertulang Terhadap Kinerja Struktur Rangka Dengan Dinding Pengisi (Infilled Frame)
Authors: Sudarsana I Ketut , Widiarsa Ida Bagus Rai , Negara Made Khrisna Adi , Wirawan I Putu Agus Putra
Published: September 2023

Penelitian ini dilakukan analisis perilaku dan kinerja Rangka Dinding Pengisi (RDP) dengan pasangan batu bata tanpa dan dengan tulangan. Dinding akan mengalami keruntuhan jika gempa kuat terjadi, hal itu dapat menurunkan kekakuan struktur dan menyebabkan kegagalan tingkat lunak. Penambahan tulangan diharapkan dapat mencegah terjadinya keruntuhan dinding. Validasi pemodelan dilakukan untuk mendapatkan parameter pemodelan sesuai karakteristik material dari hasil uji laboratorium. Pada studi ini dibuat empat model struktur dua dimensi (2D) yaitu model rangka terbuka (RT), model RDP tanpa tulangan (RTT), model RDP bertulang dengan empat buah tulangan vertikal (RV1) dan dua buah tulangan vertikal (RV2). Analisis linier dan non-linier dilakukan untuk mengetahui perilaku dan kinerja struktur. Perilaku struktur menunjukkan perpindahan terkecil sampai terbesar yaitu model RV1 = 4,21 mm, RV2 = 6,14 mm, RTT = 8,2 mm dan RT = 19,2 mm. Kinerja struktur menunjukkan kapasitas dari terbesar sampai terkecil yaitu model RV1 = 678 kN, RV2 = 340 kN, RTT = 290 kN dan RT = 150 kN. Model RV1 memiliki perilaku dan kinerja paling tinggi dari segi kekakuan dan kapasitas, namun model RV2 memiliki daktilitas tertinggi. Penambahan tulangan pada RDP mampu meningkatkan kekakuan struktur dan kapasitas gaya lateral dibandingkan dengan RDP tanpa tulangan.
A NUMERICAL METHOD FOR 3D TIME-DEPENDENT MAXWELL’S EQUATIONS IN AXISYMMETRIC SINGULAR DOMAINS WITH ARBITRARY DATA
Authors: Assous Franck , Raichik Irina
Published: September 2023

In this article, we propose to solve the three-dimensional time-dependent Maxwell equations in a singular axisymmetric domain with arbitrary data. Due to the axisymmetric assumption, the singular computational domain boils down to a subset of R2. However, the electromagnetic field and other vector quantities still belong to R3. Taking advantage that the domain is transformed into a two-dimensional one, by doing Fourier analysis in the third dimension, one arrives to a sequence of singular problems set in a 2D domain. The mathematical tools of such problems have been exposed in [4,19]. Here, we derive a variational method from which we propose an original finite element numerical approach to solve the problem. Numerical experiments are also shown to illustrate that the method is able to capture the singular part of the solution. This approach can also be viewed as a generalization of the Singular Complement Method to three-dimensional problem.
A DEGENERATING ROBIN-TYPE TRACTION PROBLEM IN A PERIODIC DOMAIN
Authors: Dalla Riva Matteo , Mishuris Gennady , Musolino Paolo
Published: September 2023

We consider a linearly elastic material with a periodic set of voids. On the boundaries of the voids we set a Robin-type traction condition. Then, we investigate the asymptotic behavior of the displacement solution as the Robin condition turns into a pure traction one. To wit, there will be a matrix function b[k](·) that depends analytically on a real parameter k and vanishes for k = 0 and we multiply the Dirichlet-like part of the Robin condition by b[k](·). We show that the displacement solution can be written in terms of power series of k that converge for k in a whole neighborhood of 0. For our analysis we use the Functional Analytic Approach.
Erythrina L. (Phaseoleae, Papilionoideae, Leguminosae) of Brazil: an updated nomenclatural treatment with notes on etymology and vernacular names
Authors: Guedes-Oliveira Ramon , Fortuna-Perez Ana Paula , Pederneiras Leandro Cardoso , Mansano Vidal de Freitas
Published: September 2023

Erythrina L. is a genus that comprises ca. 120 to 130 species distributed throughout the tropics and subtropics of the world. Linnaeus established the genus in Genera Plantarum (1737) and the first binomial name given to a Brazilian Erythrina was E. crista-galli L., described by himself in Mantissa Plantarum (1767). Vellozo proposed in Florae Fluminensis (1790–1881) the first treatment of the genus in Brazil, where he treated three species from the states of Rio de Janeiro and São Paulo. Martins and Tozzi proposed the most recent treatment in 2018, where the authors recognized 11 valid names and presented three new synonyms. Despite extensive efforts already made in the genus, previous works did not treat all names related to the valid ones for Brazilian Erythrina. The present work is the most comprehensive and up-to-date nomenclatural treatment for the genus in Brazil, covering all 84 related names found on digital nomenclatural databases. Here we analyze 64 protologues, update typification statuses, propose five new synonyms, 13 new lectotypes (11 first-step, two second-step) and one neotype, linking all protologues and type specimens with their corresponding available digital sources, and make additional notes on etymology and vernacular names.
A preliminary review of Isonychia Eaton, 1871 from Chinese mainland with a re-description of I. kiangsinensis Hsu, 1936 (Insecta, Ephemeroptera, Isonychiidae)
Authors: Qiang Xin-He , Zhou Chang-Fa
Published: September 2023

Previously, seven species of the genus Isonychia Eaton, 1871 were reported in China, but they have never been systematically reviewed. After examining our collections from the Chinese mainland, six species and one additional subspecies have been recognized, compared, and photographed. Among them, I. kiangsinensis is redescribed in all stages and a neotype is designated. Its males have triangular penes and nymphs have three dark pigments on each gill. A synonym of I. guixiensisWu et al., 1992 (I. sinensisWu et al., 1992) is confirmed. The males of this species have nearly cylindrical penes and clear abdominal markings. Finally, two species and one subspecies are recorded for the first time in China: I. ussurica sibiricaTiunova et al., 2004, I. ussurica ussurica Bajkova, 1970 and I. vshivkovae vshivkovaeTiunova et al., 2004. Together with the I. ignota (Walker, 1853), I. sexpetalaTiunova et al., 2004, I. formosana (Ulmer, 1912) and possible I. japonica (Ulmer, 1920), they show the rich diversity of the genus Isonychia in China.
Five new species of the Pholcus phungiformes species group (Araneae, Pholcidae) from South Korea
Authors: Jang Chang Moon , Bae Yang Seop , Lee Sue Yeon , Yoo Jung Sun , Kim Seung Tae
Published: September 2023

Five new spider species of the genus Pholcus Walckenaer, 1805, P. duryunsp. nov., P. hwaamsp. nov., P. mohangsp. nov., P. woraksp. nov., and P. yangpyeongsp. nov., belonging to the P. phungiformes group in the family Pholcidae C. L. Koch, 1850, are newly described from South Korea. These new species were collected from mixed forests in mountainous, hilly, and coastal terrains. This study provides the diagnoses, detailed descriptions, distribution maps, and taxonomic photographs of these new species.
Nash equilibrium realization of population games based on social learning processes
Authors: Xing Zhiyan , Yang Yanlong , Hu Zuopeng
Published: September 2023

In the two-population game model, we assume the players have certain imitative learning abilities. To simulate the learning process of the game players, we propose a new swarm intelligence algorithm by combining the particle swarm optimization algorithm, where each player can be considered a particle. We conduct simulations for three typical games: the prisoner's dilemma game (with only one pure-strategy Nash equilibrium), the coin-flip game (with only one fully-mixed Nash equilibrium), and the coordination game (with two pure-strategy Nash equilibria and one fully-mixed Nash equilibrium). The results show that when the game has a pure strategy Nash equilibrium, the algorithm converges to that equilibrium. However, if the game does not have a pure strategy Nash equilibrium, it exhibits periodic convergence to the only mixed-strategy Nash equilibrium. Furthermore, the magnitude of the periodical convergence is inversely proportional to the introspection rate. After conducting experiments, our algorithm outperforms the Meta Equilibrium Q-learning algorithm in realizing mixed-strategy Nash equilibrium.
Work resumption after invasive heart procedures, rehabilitation and ergonomic evaluation: from the hospital to the workplace
Authors: Scafa Fabrizio , Gallozzi Alessia , Forni Giovanni , Candura Stefano M.
Published: September 2023

Our Institute adopts a multidisciplinary protocol named “CardioWork” for work resumption after invasive cardiac procedures and subsequent rehabilitation: after evaluation of the cardiac functional profile, the occupational physician analyses the work activity prior to the cardiopathological event, identifies the presumed task energy requirement (from specific, published tables), and compares it with the exercise test results. Indications regarding timing and modality of returning to work are formulated accordingly. To verify the reliability of the indications thus provided, we carried out a clinical-functional follow-up study in the workplace, with Holter ECG and Armband measurement of actual energy expenditure. Over the course of two years, we enrolled 36 patients (mostly males, aged between 30 and 70 years), hospitalized after coronary revascularization, valve replacement or cardiac defibrillator implant. After rehabilitation, instrumental diagnostics (Holter ECG, echocardiography, exercise test) showed discrete functional conditions, with better values with regard to cardiac function than exercise capacity and effort tolerance. All subjects were judged fit for the job, in most cases with limitations concerning ergonomic factors, working timetable and/or stress. They returned to work quickly, with good adherence to the indications provided. Workplace Holter ECG did not show appreciable differences compared to the hospital evaluation. In one case, the average energy expenditure measured while working was higher than that inferred from the tables; in the remaining subjects, the actual expenditure coincided with what was expected or was lower. In a minority of cases (39%), the measured average expenditure slightly exceeded the optimal value (35% of the maximal value at the exercise test) recommended at the time of hospital discharge. At the end of the workplace evaluation, it was not necessary to formulate new indications. The study provides further evidence of the effectiveness of the CardioWork protocol in promoting return to work after invasive heart procedures. Though they need continuous updating, the published estimates of presumed task energy requirement remain reliable. In particularly complex cases, it is however advisable to carry out a field check of the ergometric assessments performed at the end of rehabilitation.
Extensive congenital asymptomatic renal arteriovenous malformation
Authors: Sica Simona , De Nigris Francesca , Minelli Fabrizio , Cina Alessandro , Tinelli Giovanni , Tshomba Yamume
Published: September 2023

Renal arteriovenous malformations (AVM) are abnormal communications between the intrarenal arterial and venous systems. These lesions may present with a wide range of signs and symptoms, including hypertension and hematuria. We report a case of a 71-year-old woman with incidentally diagnosis of asymptomatic right renal AVM.
A precious heritage?: The construction of constitutional identity by Indian courts
Authors: Chandra Aparna
Published: September 2023

The Supreme Court of India has invoked ‘constitutional identity’ as a doctrinal device for adjudicating some of the most fundamental legal and political conflicts in independent India. Most famously, in Kesavananda Bharati v. State of Kerala,1 the Court deployed this concept, through the device of the basic structure doctrine, to place substantive limits on Parliament’s power to amend the Constitution. Today, the Court’s invocation of the basic structure doctrine is not limited to adjudicating the constitutionality of constitutional amendments. The Court deploys this doctrine to perform a range of adjudicative functions alongside two other concepts that invoke the identity of the Indian Constitution as the basis for adjudication – ‘constitutional morality’ and ‘transformative constitutionalism.’ These terms denote that there are inherent values and purposes within the Indian Constitution that go to the core of its identity and that can be invoked in making constitutional decisions. In this article, I explore the value or otherwise of using constitutional identity in adjudication by examining how the Supreme Court has used these three concepts. I argue that in recent years, the Supreme Court has been invoking constitutional identity much beyond its initial use of protecting the Constitution from radical amendments. Rather, the Court now uses constitutional identity to discipline all exercises of state power by treating the preservation of constitutional identity as both justification for and limitation on the exercise of state power. I argue that this expansive use of constitutional identity is dangerous.
Effect of Elevated Ozone on Soybean (Glycine max L.) Cultivar: Role of Orange Juice and Synthetic Ascorbic Acid
Authors: Chaudhary Indra Jeet , Nigam Bhavna , Rathore Dheeraj
Published: September 2023

Ozone is a hazardous gas for the environment and negatively affects plant and human health. These days, phytoextracts are commonly used as a source of bioactive compounds for reducing the detrimental environmental effects on plants. In the presented study, soybean cultivar JS-335 was used to assess the protective role of synthetic ascorbic acid (SAA) and orange juice (25% orange juice, enriched ascorbic acid) under ozone stress conditions. The results showed that under ozone stress, soybean cultivar JS-335 reduced growth and biomass and negatively affected the biochemical properties of plants due to these changes, finally causing yield losses. Foliar-applied OJ >and SAA improved plant growth and development and increased crop yield. It was discovered that a 25% OJ coupled with ascorbic acid and other essential nutrients and biomolecules was almost as effective as a 100 ppm SAA in reducing the harmful effects of ozone stress on soybean plants. As a result, it was determined that OJ, a less expensive source of ascorbic acid, can improve ozone resistance in plants in ozone-prone areas.
Efficacy of Tree Leaves as Bioindicator to Assess Air Pollution Based on Using Composite Proxy Measure
Authors: Berame J. S. , Josue J. E. , Bulay M. L. , Delizo J. J. , Acantilado M. L. A. , Arradaza J. B. , Dohinog D. W. M. G.
Published: September 2023

Air pollution has become a major issue in cities due to urbanization, population growth, industrial development, and increasing number of vehicles. The study used Gmelina arborea tree leaves as a bioindicator to determine the Air Pollution Tolerance Index (APTI) as a simple and effective compositional index of environmental health in three cities in the Caraga Region, Philippines. To calculate the APTI, four biochemical parameters of tree leaves were calculated: relative water content, total chlorophyll content, leaf-extract pH, and ascorbic acid content. In terms of the APTI category, results showed that all G. arborea species collected in all sample sites are classified as sensitive to air pollution, with the sample collected in Bayugan City being the most sensitive, with an APTI value of 7.66, and the samples collected in Butuan and Cabadbaran City being the least sensitive, with APTI values of 9.54 and 9.11, respectively. A Kruskal-Wallis test revealed a significant difference between the APTI values of G. arborea trees in the three sampling areas in the Caraga region. Based on the APTI computed values of the tree leaves determined in all sites, it is concluded that G. arborea species can be used as a bioindicator of air pollution, classified as sensitive.
Radiation Tolerant Life Forms and Methods Used to Remediate Radioactive Wastes from Soil
Authors: Verma Richa , Shrivastava Anamika
Published: September 2023

The expanding nuclear industry has led to increasing radioactive waste in the environment. Exposure to these wastes causes considerable irreversible damage to the organisms, some of them being even lethal. Conventional methods like incineration, wet oxidation, and acid digestion have been used for radwaste treatment to control this. Apart from them, other organic methods like bioremediation are being widely applied by scientists. Many bacteria, fungi, algae, and plants are observed to possess remediating properties. Hence, these are now used on a large scale to treat the radioactive matter as quickly and effectively as possible. Techniques like bioaccumulation, enzymatic reduction, bioprecipitation, or phytoremediation methods such as phytoextraction and phytostabilization involving such organisms with remedial abilities have successfully removed the radioactive matter to an extent from the contaminated site. Further research is needed to increase the efficiency of the techniques and help remove radionuclides in an environment-friendly manner.
Systemic Economic Viability of Informal Sectors: E-Waste Management
Authors: Tiwari Dharna , Mehra Gautam , Dhawan Nidhi Gauba
Published: September 2023

The informal sector has been at India’s core of recycling WEEE for the last few decades. They do not have the scientific knowledge of processing e-waste and use acid baths and heat treatment to extract precious metals. The existing processes used by informal actors lead to a serious impact on their health as well as the environment. The introduction of advanced recycling technology for mitigating the hazardous effects on the environment and human health is as important as the development of technology for new-age electronic products. The social, economic, and environmental benefits to the informal sector can ensure formalized livelihoods in e-waste recycling by ensuring access to technology. The paper highlights how setting up a recycling facility and capacity building of the informal sector solves the problem of informality and its associated social, economic, and environmental evils, which will benefit the sector as a whole.
Assessment of the Environmental Impact of Discharges from Fishmeal Factories Located in Levrier Bay, Nouadhibou-Mauritania
Authors: Moulay Ely M. E. , Sakho M. , Santana-Viera S. , Santana-Rodríguez J. J. , Elemine B. , Zamel M. , Deida M. V. , Froelich D. , Babah I.
Published: September 2023

Levrier Bay, located in the western part of Mauritanian Cost, has a strategic position in Mauritania’s fish economy and reproduction environment. Recently, fishmeal factories have multiplied in the bay. This study was carried out in Levrier Bay. It is the first one in this area which is interested in assessing the environmental impact of fishmeal factory discharges by measuring several parameters such as suspended matter, chemical oxygen demand (COD), biological oxygen demand (BOD), conductivity, turbidity, and salinity. A total of 27 samples were collected at 9 sites distributed on the link between effluents from factories and the Atlantic Ocean (discharge site). Results show that some parameters are over permissible values, like suspended matter content (SS), which reached 2020 mg. L.-1 level. The turbidity measure shows excessively high values (50 to 961 mg.L.-1); impacted by effluents at the reject point, the seawater conductivity and salinity are particularly low (4.53 to 188.2 and 13 to 56.4, respectively). The total organic carbon (TOC) values ranged from 200 to 780 mg/L, whereas the highest measured level of chemical oxygen demand was 4010 mg.L.-1 Biochemical oxygen demand content ranged from 685 to 961 mg/L. The biodegradability index (COD/BOD) shows that these effluents are not easily biodegradable because the index > 3.
Influence of Vermicomposted Coal Fly Ash on Morphological and Cytological Attributes of Ricinus communis L.
Authors: Raval R. U. , Kapdi D. B. , Bhavsar N. H. , Surati V. V. , Solanki J. D. , Panjabi S. R. , Patel P. M. , Vaidya Y. H. , Verma D. N. , Patel K. P.
Published: September 2023

In view of the environmental problems generated by the large-scale production of fly ash, increasing attention is now being paid to the recycling of fly ash as a good source of nutrients. To reduce the cost of fly ash disposal and best utilization, it aimed to convert the fly ash into valuable vermicompost. Stated throughout the experiment, we opted for a soil sample and fly ash and pressed with different concentrations (control, 20%, 50%, 80% and 100%). Subsequently, all the mixtures were vermicomposted for 60 days by adding 100 Earthworms (Eisenia foetida) in each pile. The X-ray fluorescence spectroscopy measured the composition of the metal in fly ash as well as the nutritional content in the soil. This is followed by examining the morphological characteristics and cytogenetic study of Ricinus communis L. The present study indicated that E. foetida mitigates the toxicity of fly ash and is hence used as valuable vermicompost.
Integrated Method of Ozonation and Anaerobic Process for Treatment of Atrazine bearing Wastewater
Authors: Khurshid Saba , Quaff Abdur Rahman , Jha Ramakar
Published: September 2023

The paper presents the treatment of atrazine-contaminated wastewater by ozonation followed by an anaerobic process using Upflow Anaerobic Sludge Blanket (UASB) reactor. The experiment was performed with 100 ppb synthetic solutions of atrazine prepared in ultra-pure water. The corresponding initial Chemical Oxygen Demand (COD) is 226 mg.L-1. The initial pH was adjusted to 9.5. The atrazine-bearing synthetic wastewater was ozonated with an ozone dose of 9.4mg/l for 40 minutes of optimum ozonation time, resulting in a 35% reduction in the initial concentration of atrazine. Along with atrazine reduction, there was a COD removal of 54.42%. Further, it was degraded with an anaerobic process, resulting in the final reduction in atrazine concentration of 81% and the corresponding removal in COD of 86.7%. The process of ozonation led to the mineralization of atrazine and enhancement in the biodegradability of the wastewater. Using ion chromatography, the ozonated wastewater sample was analyzed for ionic by-products before and after ozonation. The ion chromatography results showed the breaking of the atrazine compound and the formation of Cl-, NO3-, SO42-, and F- as intermediate products. Further, the BOD5/COD ratio increased, reflecting the increased biodegradability. This ozonated wastewater was treated in a UASB reactor where the pesticide was degraded to 19 ppb, and COs degraded to 30 mg.L-1. The overall removal of atrazine pesticide and COD were 81% and 86.7%, respectively, in the integrated system of ozonation followed by anaerobic degradation.
Postnatal Exposure to A Low Dose of Imidacloprid: Oxidative Stress in Brain Without Affecting Learning and Behavior in Swiss Albino Mice
Authors: Sharma A. , Gupta S. , Kaur M.
Published: September 2023

The neurotoxic effects of exposure to low levels of the pesticide imidacloprid (IMI) and the effect of curcumin are of current interest when exposure occurs during early development. Male weanlings of Swiss albino mice (21 days old) were given 1 mg.kg-1 body weight (1/130 of LD50 and 2 mg.kg-1 body weight (1/65 of LD50) of imidacloprid and Curcumin (100 mg/kg body wt.) by oral gavage from postnatal day 21 to postnatal day 60. Young adult offspring were studied for behavioral parameters and learning ability using open field and Morris water maze. After completing the behavioral test, brains were processed for acetylcholine esterase activity and antioxidant enzyme estimation. The level of lipid peroxidation and activity of catalase, superoxide dismutase, and glutathione were assayed. In the present study, parameters such as locomotor activities and cognitive skills were not affected compared to lower doses of imidacloprid in the open field and Morris water test. However, activities and levels of antioxidant enzymes such as catalase and lipid peroxidation were found to be altered. In contrast, superoxide dismutase, acetylcholine esterase activity, and glutathione remained unchanged compared to the control. This suggests that subchronic exposure to low doses of IMI can lead to significant alterations in the enzymes of antioxidant protective systems such as catalase and lipid peroxidation. Co-treatment with curcumin was able to restore the activities of the affected enzymes in comparison with the control.
Environmental Protection Measures for Unplanned Land Use and Land Cover Changes in a Subbasin of the Ganga River System
Authors: Ara Zeenat , Jha Ramakar , Quaff A. R.
Published: September 2023

In the Ganga river system, unplanned land use land cover (LULC) changes have serious threat to the environment. Protective measures are essential at local, regional, and global scales to save human life and the environment. In the present work, the land use and land cover (LULC) changes have been studied from 2002 to 2021 in a basin area between river Gandak and river Burhi Gandak in India. For the analysis, Landsat 5, 7, and 8 satellite data have been used to analyze the changes in vegetation, urban land, open land, water body, and wet soil in the last two decades. The result shows that from 2002 to 2021 the agricultural area and open land have decreased by 16.12% (158,676 ha) and 11.85% (116794.8 ha), respectively. The urban and the waterlogged area have increased by 24.32% (240,070 ha) and 4.75% (46937.3 ha), respectively. The environmental protection measures, namely conjunctive use, multiple cropping practices, land reclamation, and decentralized urban development to reduce floating population, have been studied and recommended in the study region for better land use/land cover.
Synthesis of Persea Americana Bio-Oil and Its Spectroscopic Characterization Studies
Authors: Hariram V. , Reddy Pavan Kumar , Gajalakshmi B. , Basha S. K. Siraj , Saravanan A. , Khamruddin S. K. , Reddy B. Ravikumar
Published: September 2023

The present investigation aims to evaluate the feasibility of using Persea americana (Avocado) biodiesel in compression ignition engines. Persea americana bio-oil was extracted through a soxhlet extraction process using n-hexane solvent after careful pre-processing of the feedstocks. Since the Free Fatty Acid content was 1.78% estimated through titration, single stage base-catalyzed transesterification technique was adopted using methanol and sodium hydroxide as catalysts in the molar ratio of 1:6. Gas Chromatography-Mass Spectrometry analysis revealed the presence of Oleic acid in major proportions. The Fourier transform Infra-Red analysis confirmed the presence of carbonyl group ester ions between 722.19 cm-1 and 1460 cm-1. The 13C NMR and 1H NMR studies supported the successful transformation of triglycerides into Fatty Acid Methyl Esters with distinct peaks at 3.369 ppm and 48.147 ppm, respectively.
Microplastic Pollution in Seawater: A Review Study
Authors: Upendra Sheela , Kaur Jasneet
Published: September 2023

Due to its detrimental effects, notably on the well-being and biota of the ocean, microplastic contamination is becoming a bigger concern. Because of this, the issue of microplastics in the marine ecosystem is currently a major concern. The purpose of the study is to objectively evaluate the most recent data supporting the impact of microplastic contamination in seawater. When creating the standards for assessing the literature, P.I.C.O. was taken into account. For this inquiry, databases were selected and used throughout the data-collecting process. We checked PubMed, CINAHL, Google, Hinari, and the Cochrane Library. Boolean operators (AND, OR) and keywords were employed in the search to avoid oversaturating the data. Keywords used as per MeSH: Microplastic, plastics, seawater, ocean, pollution, microplastic exposure. The last five years (Since 2017) worth of studies were incorporated. Boolean search for relevant terms used. This limited my query to 188 records through various database searches. Several things were removed because they were unrelated to the study’s subject. Due to its detrimental impact on marine biota, the issue of microplastic contamination in the marine ecosystem is a current concern. Microplastics, which serve as a vector, become stuck with harmful pollutants. It is necessary to implement conservation management strategies and assistance for different educational programs to protect the environment from these hazardous microplastics. Humans are exposed to plastic waste when eating fish tainted with plastic. As a result, there are various outbreaks of chronic diseases, and people suffer the effects. The public’s education on the harmful effects of microplastics is a crucial need in this field. As a result, many inventions would be promoted to decrease the use and consumption of plastic and its products.
A climatologia escolar no ensino médio do município de Tefé-AM
Authors: Moreira Alexsandra Vieira , Aleixo Natacha Cíntia Regina
Published: September 2023

A discussão sobre a Climatologia Geográfica como um dos objetos de conhecimento da Geografia escolar, abrange diversas abordagens que podem ser discutidas nas salas de aulas, bem como no âmbito educacional. Desse modo, o presente artigo tem como objetivo analisar os conteúdos e as metodologias integradas a prática docente no ensino-aprendizagem de Climatologia no ensino médio em Tefé/AM. A construção metodológica partiu do aporte teórico fundamentado na Climatologia Geográfica e a realização da Revisão Sistemática nos bancos de dados científicos. Além disso, empregou-se a abordagem qualitativa e quantitativa, com observação não participante das aulas do ensino médio nas escolas em Tefé e a realização de entrevistas com os docentes e discentes da rede estadual de ensino. Foram utilizadas as narrativas dos entrevistados, na compreensão das dificuldades no ensino-aprendizagem, formação, metodologias utilizadas e desafios na aprendizagem. Os resultados obtidos evidenciaram as lacunas na formação dos docentes em relação aos temas em Climatologia para o ensino-aprendizagem da Geografia escolar, além da escassa adoção de metodologias eficazes para promoção da aprendizagem e a escassez de recursos didáticos para a construção de conhecimentos sobre os aspectos físicos e sociais do clima.
Circuito espacial da pimento-do-reino: Implicações socioeconômicas de produtores familiares do município de Cametá (PA)
Authors: Paes Raíssa Lopes , Valente da Cruz Benedito Ely
Published: September 2023

A pesquisa tem, como objetivo, analisar o circuito espacial produtivo da pimenta-do-reino e as consequências deste na reprodução socioeconômica do produtor familiar do município de Cametá, estado do Pará. A metodologia se fundamentou na revisão bibliográfica, com levantamento de dados secundários e com entrevista a 21 produtores e a dez compradores-intermediários, obtendo, como resultado, a noção de que este subcircuito se integra a dinâmicas extralocais, revelando atuações internas e externas ao município. Tal rede evidencia a formação de arranjos produtivos locais, que resultam de uma situação geográfica específica, a qual explica a circulação da produção no espaço, a partir de uma atividade, que se faz onerosa ao produtor, quanto à aquisição de matérias-primas e à obtenção de mão de obra, que apresenta um sistema de comercialização ainda realizado por compradores-intermediários e por empresários rurais, ocupando diferentes níveis na cadeia de trocas, e que obedece a uma lógica de precificação externa, baseada na redução dos valores da mercadoria, com implicações diretas para a reprodução socioeconômica do produtor, consolidando seu papel de fornecedor de matéria-prima. Frente a esta realidade, é preciso pensar em estratégias, voltadas à produção, à comercialização e à agregação de valor stricto sensu, para suprimir parte dos efeitos negativos da estrutura atual do circuito, principalmente sobre a produção familiar.
Cooperação transfronteiriça na Amazônia internacional: Estratégias e ações no caso entre França e Brasil (1996-2023)
Authors: Silva Gutemberg de Vilhena
Published: September 2023

Este artigo tem como objetivo analisar o desdobramento e a evolução da cooperação transfronteiriça entre Brasil e França na região amazônica, a partir dos debates estabelecidos pelas Comissões Mistas Transfronteiriças (CMTs). A metodologia proposta para esta pesquisa é baseada na análise de conteúdo. Foram examinados os relatórios das CMTs desses países, utilizando as etapas de preparação, organização, codificação, categorização, análise e interpretação dos dados, seguindo as diretrizes de Krippendorff (2004) para garantir a validade e replicabilidade das inferências. O estudo aborda aspectos teórico-metodológicos da cooperação transfronteiriça e o papel das CMTs, fornecendo uma contextualização histórica desses mecanismos de diálogo. Em seguida, são apresentados os temas e iniciativas mais relevantes discutidos nas doze CMTs realizadas entre Brasil e França ao longo de vinte e seis anos (1997-2023). Ao analisar as propostas de políticas públicas estabelecidas pelas CMTs, conclui-se que há algumas tendências de foco estabelecidas, muitos desafios e algumas oportunidades já trabalhadas entre ambos.
A Scoping Review of Retirement Planning Research Trends in Sub-Saharan Africa
Authors: Aba Sam Kate , Sarpong Dwumoh Joseph , Kojo Abreh Might
Published: September 2023

Planning for retirement is positively related to retirement well-being and satisfaction. Africa’s largely youthful population will eventually age, with most people exiting the workforce in time. However, much of the world’s research on retirement planning is focused more on the developed world contexts. This scoping review was done to ascertain the vigor and breadth of research on retirement planning in Sub-Saharan Africa from 2000 to 2020. Using Boolean combinations of keywords, the researchers accessed 1546 documents from Google Scholar. After screening, 53 articles were reviewed. It was found that publications about Nigeria dominated the literature; most studies in the sub-region are quantitative and, most studies focused on predictors of retirement planning, preparedness and satisfaction. Retirement planning in Africa is generally under-researched. The authors made suggestions for future studies.
Mobile Phone Internet Usage and Students’ Achievements in Tanzania Higher Learning Institutions
Authors: Muya Francis , B. Mlay Glory , Edward Leticia , D. Ntyangiri Christopher , Bhalalusesa Neema , Ngaiza Doreen
Published: September 2023

This study sought to determine the effects of mobile phone internet usage on students’ achievements in selected Tanzanian higher learning institutions. Cross sectional survey design was adopted in collecting data from 204 conveniently selected respondents from the population of students who were studying at the National Institute of Transport and the University of Dar es Salaam. Data was collected by using a questionnaire whereby analysis involved both descriptive and inferential statistics. The descriptive statistics revealed that academic uses of mobile phone internet are more dominant, followed by social uses and economic uses. The inferential statistics revealed that social and academic uses variables make significant unique contributions to the prediction of the dependent variable, students’ achievements with economic uses having insignificant contribution to the variable. The study recommended that given uncontrollable uses of mobile phone internet among students, some initiatives are essential as a proactive measure for enhancing students’ academic excellence and minimizing serious vulnerabilities associated with irresponsible internet usage.
The Role of Adverse Childhood Experience, Psychological Distress and Life Satisfaction on Marital Satisfaction among Couples in Lagos, Nigeria
Authors: Afolabi Aroyewun Bushura , Israel Uzochukwu , Adewole Aisha
Published: September 2023

This study dealt with marital satisfaction among couples in Lagos, Nigeria. It sought to establish whether adverse childhood experience, psychological distress and life satisfaction have any impact on marital satisfaction. The study adopted the predictive correlational design, using 893 married men and women as respondents to a questionnaire. Data was analysed through descriptive and inferential statistics. The study revealed that adverse childhood experiences did not affect marital satisfaction. While psychological distress negatively affected the marital satisfaction, life satisfaction enhanced the marital satisfaction. The study recommended that effort be directed at keeping the level of psychological distress low in marriages by ensuring that any action or activity that can potentially trigger psychological distress is eliminated. Efforts geared toward enhancing life satisfaction should be encouraged among married couples due to the potential positive influence of such on marital satisfaction.
Nexus between Academic Motivation and Self-actualization among Students of Public Universities in Western Kenya
Authors: J.P. Ogutu Joel , Okaya Khasakhala Edward
Published: September 2023

The study investigated on the influence of academic motivation on self-actualization among university students in Western region of Kenya. The study employed a correlation research design with the sample size of 153 university students selected through stratified and simple random sampling. The study used a questionnaire to collect data from the field. Data was analyzed using mean, standard deviation and hierarchical multiple regression. The study established that academic motivation existed among university students under investigation. The university students showed proof of existing elements of self-actualization. Extrinsic and amotivation influenced self-actualization among the university students. The study recommended that universities in Western Kenya should regularly sensitize and promote academic motivation among students. While it is recommended that universities should assist students fulfill their ambitions for self-actualization, some ways to assist includes expanding higher education space by creating Open University learning platforms.
Contextualization Strategies Used by Pre-service Teachers’ in Teaching English Grammar in Malawian Secondary Schools
Authors: Nanyinza Esther , Ecloss Munsaka Ecloss x
Published: September 2023

The purpose of this study was to explore contextualization strategies used by pre-service teachers when teaching English grammar during their teaching practicum in secondary schools in Malawi. The study employed a qualitative single case study design. From the population of 130 University of Livingstonia pre-service teachers, 10 were purposefully sampled because they took English as their major or minor teaching subject. Data was collected through semi-structured interviews, classroom observations and document analysis of English textbooks, lesson plans and schemes of work. After collection, data was stored in a flash disk and was served in Google drive for safety in case of loss. Analysis of the data was done thematically after sorting it into categories. Ethical principles were considered to protect participants’ privacy. The criteria of trustworthiness i.e. credibility, transferability, dependability and confirmability were also ensured. Key findings show that pre-service teachers used a number of contextualization approaches such as authentic assessment, authentic materials, cooperative learning and integration of literature to teach grammar. The study recommends that teacher education institutions should effectively train pre-service teachers on how to use the strategies to teach English grammar so as to enhance meaningful learning among secondary school students.
Adventist Leadership and Changing Trends: Navigating Meaning and Influence in a Dynamic World
Authors: Ochorokodi Japheth
Published: September 2023

This paper examines the concept of leadership in a dynamic world influenced by various economic, social, religious, and political factors. Specifically, it focuses on the functionality of leadership within the global Adventist Church, taking into account emerging issues. The Adventist leadership model emphasizes the importance of consultation, drawing from the biblical principle found in Deuteronomy 19:15. This unique leadership approach offers several advantages, including policy compliance, shared authority and accountability, consideration of diverse perspectives and opinions, knowledge sharing, effective decision-making, and efficient governance. The paper highlights how the Adventist Church's leadership approach, centered on consultation, has contributed to its longevity and ability to chart its own course, distinct from approaches influenced by external factors. Consultative leadership approach has promoted unity and harmony within the church. By valuing diverse opinions and fostering a culture of respectful dialogue, the church has been able to mitigate conflicts and build consensus. This collaborative spirit has strengthened the bonds among members and has contributed to the overall cohesiveness and stability of the church. This approach has allowed the church to stay true to its core values, adapt to evolving circumstances, and maintain a distinct identity, setting it apart from approaches driven solely by external influences. Ultimately, this consultative leadership approach has played a significant role in shaping the trajectory of the Adventist church over its 160-year history, setting it apart from approaches driven by external influences.