bluuebunny/crossref_metadata_2025_split huggingface dataset:
Dynamic Response of High-Rise Buildings with Shear walls due to Seismic forces
Authors: .K Nallasivam , Shukla Kashyap 
Published: April 2023

Abstract
Lateral loads such as earthquake and wind loads play a governing role in the design of high-rise buildings. Consequently, the vital work in the lives of structural engineers is to minimise damage to the structure and its structural components during an earthquake by proper design. A shear wall is one of the vertical elements that fulfils the above function by providing enough lateral rigidity if it is located and arranged effectively. As a result, the purpose of the study is to determine the response of various high-rise buildings with different shear wall arrangements when subjected to seismic loads. A total of nine G + 30-storey models have been made using finite element-based ETABS Software. All the models have shear walls distributed in such a way that the floor plan length of the walls is the same in all buildings, so the results are influenced solely by the arrangement and location of the walls. Seismic loads were applied using the response spectrum method, which complied with Indian codal provisions. The results of storey displacements, storey drifts, and story shear were extracted. The shear walls arranged in the form of a core at the centre of the building have been the most effective. It shows a 1.8 times greater decrement in top-storey displacement compared to the model without shear walls. The building with an irregular arrangement of shear walls at the corner is the least effective in resisting earthquakes.
An Improved Elephant Clan Optimization Algorithm for Global Function Optimization
Authors: Wang Yanjiao , Liu Wenyu 
Published: April 2023

Abstract
The elephant clan optimization algorithm (ECO) is a novel metaheuristic inspired by modeling the most basic individual and collective behavior of elephants. However, it suffers from the problems of easily falling into local optimum as well as insufficient convergence speed and convergence precision. To further improve the convergence performance of ECO, an improved elephant clan optimization algorithm (IECO) is proposed in this paper. The population initialization method with additional autonomous movement strategy, the Euclidean distance-based population partitioning method and the early maturity suppression mechanism proposed to improve the population diversity and the ability of the algorithm to jump out of the local optimum. An improved individual population update strategy balances the algorithm's convergence speed and variety. Finally, the enhanced substitution improves the convergence speed while maintaining population diversity and improves the algorithm's robustness to different optimization problems. The experimental results on the CEC2013 test set show that the IECO algorithm has significant advantages in terms of convergence speed, convergence accuracy, and stability compared with the original ECO algorithm and four other excellent algorithms.
Synergetic tellurium influence on aluminium borophosphate glass material for structural and antimicrobial activities
Authors: Gaikwad Vandana A. , Tigote Radhakrishnan M. , Kazi Subiya K. , Khobragade Rahul M. , Mane Yogesh D. , Suryawanshi Appasaheb W. 
Published: April 2023

Abstract

AlX.YB2O3 [(6-X-Y)P2O5]. TeO3 (X = 3, 2, 1, and Y = 2.5, 1.5, and 0.5) were sintered for 2 hours at 800°C using the sol-gel method. The ultraviolet-visible study shows maximum absorbance at 264 nm with optical band gap energy range of 4.21 to 4.24 eV. The X-ray diffraction pattern confirmed the arrangement of the FCC structure with an average crystallite size of 21.63–25.77 nm. The morphological structure was investigated using field emission scanning electron microscopy (FE-SEM), and their size was confirmed by high resolution transmission electron microscopy (HR-TEM).The energy-dispersive X-ray spectroscopy (EDS), which validated the TeO3 composition. The highly magnetic character was estimated using the Vibrating Sample Magnetometer (VSM) technique. It is extensively used as a conducting material because of its low dielectric loss. The glass material shows the application towards the various antimicrobial activities.
Fishery livelihoods and an adaptation to climate change-induced threats at the Bhomra Wetland: a case study through a stakeholder-driven approach
Authors: Kumari Suman , Debnath Sanjeet , Sarkar Uttam Kumar , Lianthuamluaia Lianthuamluaia , Puthiyottil Mishal , Karnatak Gunjan , Kumar Das Basanta , Ghosh Bandana Das , Das Arijit 
Published: April 2023

AbstractThe main aim of the present study is to assess the present ecological status of Bhomra wetland with respect to the fisheries and associated ecosystem services and to prescribe some climate-smart adaptation technologies in changing climate. The analysis showed increasing temperature (Kendall's tau = 0.60, p&lt;0.05) and decreasing rainfall (Kendall's tau = −0.33, p&lt;0.05) in the studied region over the last two decades. The wetland is dominated by Cypriniformes species followed by Perciformes species. The overall production of the fish (i.e., 32155 kg) from the wetland in 2020 is below the average production of the last 10 year (i.e., 54704 kg). Canonical correspondence analysis reviled a strong correlation (p&lt;0.05) between the fish assemblage and ecological parameters (mainly total alkalinity and available nitrate) of the wetland. Though the species diversity was moderate along with the moderate species richness (i.e., Shannon-Weiner diversity index = 1.581±0.007), the evenness (Simpson evenness index = 0.995±0.001) was high throughout the wetland. The wetland was found suitable for carp culture, but the ecosystem's health has degraded over time. The communication further suggests several climate-resilient strategies for sustainable utilization of wetland ecosystem services and increasing adaptive capacity of the fishers.
Modelling the effect of salt from road runoff on nitrification of a wastewater treatment plant
Authors: Jovanović Nikola , Breu Sandra , Plihal Hanns , Langergraber Guenter 
Published: April 2023

Abstract
Salt (NaCl) that is being dispersed on the roads to prevent the formation of ice and snow can have positive and negative effects on nitrification rates in wastewater treatment plants (WWTPs). Based on experimental data, a numerical model has been derived to describe these effects. The numerical model has been successfully implemented in the SIMBA# simulation software and tested on a real case study, the Freistadt WWTP, located in Upper Austria. A number of parameters impacting nitrification have been investigated: inflow salt concentration, duration of the salt loading, temperature during salt loading, and increasing volumetric inflow to the WWTP during salt loading events. Simulation results revealed that salt concentration lower than 1 g NaCl/l brought improvement in nitrification rates. However, when this threshold was exceeded, inhibition of nitrification occurred. Furthermore, prolonged salt dosing exposure times brought amplification of both positive and negative effects on removal rates. Results show that salt concentration and salt load have the biggest impacts on nitrification.
Natural groundwater recharge estimation using multiple methods combined with an experimental study
Authors: Mohan S. , Pramada S. K. 
Published: April 2023

AbstractDue to increasing human settlements, agricultural development, and economic activities, the extraction of groundwater is increasing. The over-exploitation of aquifers has become a cause for concern within the last century due to these developmental activities and the accurate estimation of sustainable yield from aquifers is very important. Assessing natural aquifer recharge is one of the key challenges in determining the sustainable yield of aquifers. In this study, an integrated model using the SCS-CN method, remote sensing, and a Geographic Information System (GIS) is developed for estimating natural aquifer recharge for the recharge area of the sub-basin of the Vellar river basin, Tamil Nadu, India. Also, actual infiltration measurements were conducted and an infiltration-based model was developed to compute natural groundwater recharge and compare it with empirical methods. On average, the recharge is 17% of the rainfall for the recharge area.
An improvement in drainage flow equation of EPA SWMM green roof module
Authors: Bako Kavsar , Kazezyılmaz-Alhan Cevza Melek 
Published: April 2023

Abstract

Green roofs are among the important green infrastructures which decrease the negative impacts of urbanization. In this study, the green roof modeling capability of U.S. Environmental Protection Agency Storm Water Management Model (EPA SWMM) is evaluated and the modeling methods used in EPA SWMM, which need improvements, are determined. In particular, the drainage flow, which is originally calculated with Manning's equation in SWMM, is improved by introducing the drainage mat void thickness and adapting a new value for the exponential coefficient of depth in the equation. In addition, the capability of the percolation equation is further investigated, i.e., the value of the coefficient of the exponential function of soil moisture content that considers the percolation through the soil layer is determined for different substrates using the existing unsaturated hydraulic conductivity and soil moisture content data from steady-state tests. A comparison of the improved equation of drainage flow results with the existing experimental data shows that the improved equation represents the drainage flow more accurately than the one used in EPA SWMM.
Synthesis and Biological Activity of 2-pyridone Derivatives: A Mini Review
Authors: Verma Krishan Kumar , Kapoor Sapna , Kushwaha Vivek Kumar , Mishra Ashish , Upadhyay Anshul 
Published: April 2023

:
The 2-pyridone nucleus is an important scaffold present in various compounds with diverse
pharmacological activity. Among the reported 2-pyridone analogs, the majority of the compounds either
have a substituted ring system or a fused ring system. Till now, several derivatives have been reported by
different researchers for their antimicrobial activity, anticancer activity, antiviral activity, antioxidant
activity, anti-hepatitis virus activity, and anti-allodynia and anti-obesity activities. In this review, we have
attempted to compile synthetic methods of 2-pyridone ring by ring cyclization along with pharmacologi
cal aspects related to various synthesized derivatives of the 2-pyridone nucleus.
Palm-Based Beverages Around the World: A Review
Authors: Aparnna V.P. , Kumar Chauhan Anil , Singh Shubhendra 
Published: April 2023

Abstract:
Palms have been a source of food, drinks, oil, lumber, sugar, and the sap it produces.
Palm sap is a refreshing, non-alcoholic beverage that has a plethora of health benefits. Some examples
of palm-based beverages are Neera, toddy, tuba, wine, arak, and other traditional fermented
drinks, along with concentrated syrups. Palm sap-based beverages are high in carbohydrates,
vital amino acids, and vitamins and are consumed as energy drinks around the world. Antioxidants,
which have been shown to have a good effect on human health, are also found naturally
in palm-based beverages. Technological advancement, marketing, and a lack of research
and training hinder the commercialization of nutritional by-products made from palm sap. The
current review aims to focus on palm-based beverages, their health benefits, recent developments,
and future perspectives.
Hydrogels as Potential Controlled Drug Delivery System: Drug Release
Mechanism and Applications
Authors: Mishra Sudhanshu , Ojha Smriti , Sharma Saurabh 
Published: April 2023

Abstract:
Hydrogels are one of the most extensively studied novel drug delivery dosage forms owing to
their satisfactory results in drug delivery in various conditions, including pain management, immunomodulation,
carcinomas, healing of wounds, and cardiology. A crosslinked polymeric network and an optimum
amount of water combine to form hydrogels. Due to their specific properties such as biocompatibility,
biodegradability, hydrophilicity, and non-toxic to biological tissues, hydrogels are demanding biomaterials.
Furthermore, due to their programmable physical characteristics, controlled degradation behavior,
and capability to preserve unstable medicines from degradation, hydrogels serve as an advanced drug
delivery system in which diverse physiochemical interactions with the polymeric matrix containing embedded
medications control their release. Despite significant challenges remaining, there has been significant
progress in recent years in overcoming the clinical and pharmacological constraints of hydrogels for
drug delivery applications This review covers various hydrogel-forming polymers, strategies for crosslinking
of gelling agents, and release mechanisms from the hydrogel. Moreover, the current work includes
a few marketed hydrogel preparations and patent rights associated with it, describing its mechanism of
action against the underlying diseases.
Asymmetric Synthesis of Spirooxindole Lactones by Ammonium-tethered
Chiral Organocatalysts catalyzed Michael Addition/Cyclization of 3-
hydroxyoxindoles with α,β-unsaturated Aldehydes
Authors: Graham Robert L. , Mills Kira , Headley Allan D. , Ni Bukuo 
Published: April 2023

Abstract:
The ammonium-tethered pyrrolidine-based organocatalyst catalyzed asymmetric Michael
addition/cyclization reaction of α,β-unsaturated aldehydes with 3-hydroxyoxindole in aqueous media
was developed, giving the spirooxidole lactones in high yields with high enantioselectivities.

Background:
The asymmetric Michael addition/cyclization reaction of 3-hydroxyoxindoles with α,β-
unsaturated aldehydes is an important method for the synthesis of chiral spirooxindole derivatives,
which are found in a wide range of biologically active natural products and pharmaceutical agents.

Objective:
Organocatalyzed asymmetric Michael addition/cyclization reactions are one of the most
powerful and effective approaches for the construction of complex molecules from relatively simple
starting materials. However, a major problem associated with these organocatalytic system is that high
catalyst loading and organic solvents are required. In the present work, our objective was to develop a
water-compatible organocatalyst that aimed at lowering catalyst loading and being active in an aqueous
system.

Methods:
In a typical experiment, To a solution of catalyst 2a (0.008 mmol) and PhCO2H (0.096
mmol) in 0.5 mL of a mixture solvent iPrOH/H2O (1:3) was added α,β-unsaturated aldehyde (0.4
mmol) and 3-hydroxyoxindole (0.8 mmol). The reaction mixture was proceeded at room temperature
for 16 hours, and then was extracted with 10 mL dichloromethane to give the cyclized hemiacetal,
which was subjected to the direct oxidation with pyridinium chlorochromate (PCC, 1.2 mmol) for 16
hours to give the desired spirooxindole lactones.

Results:
The reactions successfully gave spirooxindole lactones in high to excellent yields (81-95%)
with moderate to excellent enantioselectivities (up to 99% ee). However, the diastereoselectivities
were poor ranging from 1:1.1 to 1:2.3.

Conclusion:
The asymmetric Michael addition/cyclization reaction of α,β-unsaturated aldehydes with
3-hydroxyoxindole using ammonium-tethered pyrrolidine-based organocatalyst has been developed.
The reaction was performed in aqueous media with low catalyst loading (2 mol%) and provided the
spirooxidole lactones in high yields (81-95%) with high enantioselectivities (ee: up to 99%).
Landasan Filosofis dan Teori Pendidikan Sejarah dalam Buku Teks Sejarah Kelas X Karya Ratna Hapsari dan M. Adil
Authors: Hotimah Iis Husnul 
Published: April 2023

Artikel ini ditulis didasarkan pada buku teks yang memiliki fungsi sebagai sumber belajar siswa. Sehingga buku teks harus diformulasikan dengan berbagai macam teori khususnya teori pendidikan untuk buku teks sejarah. Dalam pembelajaran sejarah, buku teks bukan hanya berisi mengenai fakta-fakta atau penjelasan peristiwa, namun buku teks sejarah juga harus dikembangkan berdasarkan landasan filosofis dan teori pendidikan sejarah. Artikel ini bertujuan untuk menganalisis unsur-unsur landasan filosofis dan teori pendidikan dari buku teks sejarah karya Ratna Hapsari dan M. Adil. Teknik pengumpulan data dilakukan dengan studi pustaka. Analisis data dilakukan dengan menguraikan data mengenai landasan filosofis dan teori pendidikan. Hasil penelitian menunjukkan bahwa landasan filosofis dari buku teks sejarah karya Ratna Hapsari dan M. Adil menggunakan aliran filsafat Progresivisme dan aliran filsafat Rekonstruksionisme, sementara teori yang digunakan dalam buku tersebut adalah Teori Kognitif dan Teori Konstruktivisme.Kata Kunci: Landasan Filosofis, Teori Pembelajaran, Buku Teks Sejarah
Automatic Essay Scoring Using Data Augmentation in Bahasa Indonesia
Authors: Fadilah Nur , Priyanta Sigit 
Published: April 2023

Essay is one of the assessments to find out the abilities of students in depth. UKARA is an automatic essay scoring development that combines NLP and machine learning. This study uses the datasets provided for the UKARA challenge which consists of 2 types, datasets A and B. The dataset provided is still small for the model creation process so that it is one of the causes of the resulting model is not optimal. This research focuses on the process of adding or augmenting data using EDA (Easy Data Augmentation Techniques). There are four methods applied, namely Synonym Replacement (SR), Random Insertion (RI), Random Swab (RS), and Random Deletion (RD). The data is used for model creation by using the BiLSTM method. Performa model evaluated using confusion matrix with nilai accyouracy, precision, recall dan f-measure.The results showed that the dataset A without augmentation using k-fold cross validation produced the highest accuracy value with a value of 85.07%. While the results in data B show EDA insert with k-fold cross validation of 72.78%.
Studi Suhu dan Waktu Cooling Pembuatan Roti Manis Pada Karateristik Kimia dan Organoleptik
Authors: Ayu Paramita Tiara , Damat Damat , Wahyudi Vritta Amroini 
Published: April 2023

Industri roti pada bidang pangan untuk menjaga kualitas produk akhir perlu memperhatikan tahapan cooling yang berpengaruh pada mutu roti. Penelitian sebelumnya menunjukan pada proses cooling dengan suhu berbeda, berpengaruh terhadap suhu pengemasan roti yang mempengaruhi kualitas mutu. Parameter yang berpengaruhi adalah karakteristik kimia dan organoleptik, Tujuan dari penelitian ini dilakukan adalah untuk mengetahui interaksi antara perlakuan suhu dan waktu cooling terhadap karakteristik kimia dan organoleptik roti manis. Metode penelitian meliputi Rangcangan acak kelompok (RAK) Faktorial yang terdiri dari 2 faktor. Faktor 1 (T) pemberian suhu cooling, faktor 2 (R) pemberian lama waktu cooling dengan memiliki 6 level: T1RI (16oC:1 jam), T2R1 (30oC:1 jam), T1R2 (16oC:2 jam), T2R2 (30oC:2 jam), T1R3 (16oC:3 jam), dan T2R3 (30oC:3 jam). Parameter meliputi karakteristik organoleptik (tekstur, aroma, warna dan rasa), kadar air, kadar abu, kadar lemak, kadar protein dan total kapang. Sampel yang digunakan adalah roti manis. Hasil penelitian menunjukan berpengaruh nyata terhadap kadar abu roti manis. Tidak berpengaruh nyata terhadap kadar air, kadar lemak, kadar protein, total kapang dan organoleptik roti manis meliputi warna aroma, rasa, dan tekstur.
Presentación del Debate: Actitudes de la población española ante la pandemia
Authors: López Rey María José 
Published: April 2023

Desde que a finales del año 2019 comienzan a hacerse públicos los acontecimientos de Wuhan hasta la actualidad, ningún otro asunto ha preocupado tanto a la ciencia como la reciente pandemia de COVID-19. La atención prestada al fenómeno por los investigadores/as no tiene precedentes, y si bien se trata de una cuestión biomédica, el abordaje ha sido multidisciplinar. El trabajo sociológico, en España, deja ver sus primeros frutos en el Simposio que la FES organizó en junio de 2021 “Impactos sociales del COVID-19. Miradas desde la Sociología”. A lo largo de estos dos últimos años se ha producido una ingente cantidad de datos, que ha posibilitado a los investigadores/as profundizar en aquellos aspectos en donde esta disciplina se hace más útil para comprender la enfermedad y su vivencia. Han pasado ya más tres años de aquellas primeras noticias, y estamos en un buen momento para una reflexión más pausada, con cierta perspectiva, que ponga en común los resultados definitivos que arrojan los distintos trabajos que se han venido desarrollando en el contexto nacional.
A historiografia italiana sobre Portugal na primeira metade do século XIX
Authors: Cassino Carmine 
Published: April 2023

Na primeira metade do século XIX reaviva-se o interesse dos historiadores de cultura itálica para história do então reino de Portugal, como nunca tinha acontecido antes. Nomeadamente, os acontecimentos políticos ocorridos na península ibérica no triénio de 1820-23, conjuntamente com a memória das recentes vicissitudes antifrancesas, contribuem de maneira evidente (embora com atitudes diferentes) para despertar o interesse italiano por aquele espaço geográfico em geral, e por Portugal em particular, levando os mais diferentes historiadores (em formação e valor científico) a invadir o terreno acidentado da narração da nação lusitana. O interesse irá crescendo, definindo uma bibliografia complexa que acompanha o desenvolvimento histórico das duas áreas, até chegar ao meio curso do século com trabalhos de célebre autoria e rigorosa estruturação, que visam construir paralelos entre história e política. Por outro lado, a história secular da nação portuguesa torna-se referência a olhar numa altura em que uma nação se ia buscando na própria península itálica. O seguente estudo visa oferecer uma panorâmica sobre a atenção dada a Portugal pelos estudos históricos italianos no périodo histórico indicado, ressaltando as problemáticas metodológicas e interpretativas presentes nas obras referenciadas, e perfilando as diferentes perspetivas historiográficas.
Pengaruh Penambahan Nanomaterial dari Abu Tulang Ikan pada Mortar untuk Paving Block
Authors: Kurniawan Nugraha Ade , Juliafad Eka 
Published: April 2023

Mortar adalah campuran antara pasir, air dan semen Portland dengan komposisi tertentu. Mortar harus dicampur dengan jumlah air yang sesuai agar mendapatkan kualitas yang baik untuk mempermudah pekerjaan. Saat membuat campuran mortar dan beton, terkadang diperlukan bahan tambahan untuk mempercepat pengerasan campuran atau untuk memperkuat campuran. Tujuan penggunaan bahan-bahan tersebut adalah untuk memperbaiki dan meningkatkan sifat-sifat campuran sesuai dengan yang diinginkan. Nanomaterial sekarang menjadi salah satu solusi aditif mortar yang tersedia. Bahan yang digunakan sebagai campuran diubah menjadi ukuran 1-100 nm. Bahan nano dapat membangun struktur lebih cepat dan membuatnya lebih aman karena dapat meningkatkan kekuatan mekaniknya dan mengurangi degradasi mortar akibat masuknya air. Dilakukan pengujian kuat tekan mortar dengan menambahkan nanomaterial berupa abu tulang ikan pada campuran mortar. Variasi campuran nanomaterial yang digunakan adalah 2,5% ,5%, 7,5%, 10% dan pengujian kuat tekan direncanakan pada umur 7 hari, 14 hari dan 28 hari. Berdasarkan hasil pengujian nilai kuat tekan mortar meningkat pada variasi 2,5% dengan rata-rata kuat tekan 143,07 kgf/cm2.