bluuebunny/crossref_metadata_2025 huggingface dataset:
Experimental and DFT study of photocatalytic activity of reduced graphene oxide/copper sulfide composite for removal of organic dyes from water
Authors: Sadek Mohamed S. , Khedr Ghada E. , Messih Michel F. Abdel , Ismail Mohamed Abdel Hay
Published: September 2023

In this work, successful nanocomposites composed of different ratios of reduced graphene oxide and copper sulphide (xCuS–rGO) were fabricated to aid in treating water contaminated with organic dyes. XRD, TEM, SEM, XPS, IR, EDX and BET were applied for the characterization of (CuS–rGO). The photocatalytic strength of the prepared nanocomposites was evaluated using artificial sunlight irradiation. The nanocomposites were tested for their ability to degrade both anionic and cationic organic dyes, including amaranth and rhodamine B (RhB). The excellent photocatalytic strength of our composites, relative to pristine CuS and rGO, was interpreted as rGO sheets being very porous. In addition, the charge moved efficiently from rGO to CuS. The combined properties enhanced the efficiency of photodegradation of CuS–rGO composite across the dyes under the illumination of simulated sunlight. The electron transportation from rGO sheets to the CuS conduction band enhances the charge separation and transportation. The role of superoxide radicals in photocatalytic degradation was unveiled and the interactions between the studied dyes and our catalysts were investigated by density functional theory study and scavenging investigation. This work gives new ideas about the preparation and properties of (CuS–rGO) composites and their broad application in solving environmental problems.
Multimode OAM beam generation through 1-bit programmable metasurface antenna
Authors: Nadi Morteza , Sedighy Seyed Hassan , Cheldavi Ahmad
Published: September 2023

modern wireless communication, the orbital angular momentum (OAM) beam is considered as an important technology. Some considerable efforts have been devoted to using this technology for channel capacity enhancement as much as possible. Nowadays, programmable metasurfaces provide an innovational scenario for generating multi-mode OAM beams due to their ability for digital electromagnetic waves modulation. However, the current programmable metasurfaces for generating OAM beams are typically based on reflective and transmissive modes, which have low aperture efficiency due to spillover and illumination effects. In this paper, a 1-bit programmable metasurface antenna is proposed with capability of producing highly efficient dynamic multi-mode OAM beams. The proposed structure is consisted of electronically reconfigurable meta-radiating elements loaded by PIN diodes to generate two-phase states of electric field. The designed Field Programmable Gate Array (FPGA) can assign a code sequence of 0 or 1 to the metasurface antenna in real-time to generate multi-mode OAM beams. Hence, a dynamical surface is obtained by switching PIN diodes to change the phase distribution on the surface. To verify the concept, the metasurface antenna is fabricated and measured with different OAM beam states, which are in agreement with the full-wave simulations, properly. The designed structure introduces a capable multi-mode OAM alternative for high throughput mm-wave communications.
All silicon MIR super absorber using fractal metasurfaces
Authors: Ali Alaa M. , Ghanim AbdelRahman M. , Othman Muhammad , Swillam Mohamed A.
Published: September 2023

Perfect absorbers can be used in photodetectors, thermal imaging, microbolometers, and thermal photovoltaic solar energy conversions. The spectrum of Mid-infrared (MIR) wavelengths offers numerous advantages across a wide range of applications. In this work, we propose a fractal MIR broadband absorber which is composed of three layers: metal, dielectric, and metal (MDM), with the metal being considered as n-type doped silicon (D-Si) and the dielectric is silicon carbide (SiC). The architectural design was derived from the Sierpinski carpet fractal, and different building blocks were simulated to attain optimal absorption. The 3D finite element method (FEM) approach using COMSOL Multiphysics software is used to obtain numerical results. The suggested fractal absorber exhibits high absorption enhancement for MIR in the range between 3 and 9 µm. D-Si exhibits superior performance compared to metals in energy harvesting applications that utilize plasmonics at the mid-infrared range. Typically, semiconductors exhibit rougher surfaces than noble metals, resulting in lower scattering losses. Moreover, silicon presents various advantages, including compatibility with complementary metal–oxide–semiconductor (CMOS) and simple manufacturing through conventional silicon fabrication methods. In addition, the utilization of doped silicon material in the mid-IR region facilitates the development of microscale integrated plasmonic devices.
Microglia-dependent neuroprotective effects of 4-octyl itaconate against rotenone-and MPP+-induced neurotoxicity in Parkinson’s disease
Authors: Xia Ning , Madore Victoria , Albalakhi Ali , Lin Sonia , Stimpson Taylor , Xu Yuehang , Schwarzschild Michael A. , Bakshi Rachit
Published: September 2023

Chronic neuroinflammation is implicated in the pathogenesis of Parkinson’s disease (PD), one of the most common neurodegenerative diseases. Itaconate, an endogenous metabolite derived from the tricarboxylic acid cycle via immune‐responsive gene 1 activity, may mediate anti-inflammatory responses by activation of the nuclear factor erythroid 2-related factor 2 (Nrf2) antioxidant pathway. This study investigates the neuroprotective potential of 4-octyl itaconate (OI), a cell-permeable derivative of itaconate, in cellular models of PD. OI not only suppressed lipopolysaccharide-induced proinflammatory cascades of inducible nitric oxide synthase, cyclooxygenase-2, and cytokines release in mouse BV2 microglial cells but also activated the Nrf2 signaling pathway and its downstream targets in these cells. Conditioned medium derived from OI-treated BV2 cells protected against rotenone- and MPP+-induced neurotoxicity in Neuro 2A cells. Overall, our findings support the anti-inflammatory neuroprotective potential of OI in PD.
Real-time hybrid angular-interrogation surface plasmon resonance sensor in the near-infrared region for wide dynamic range refractive index sensing
Authors: Koresawa Hidenori , Seki Kota , Nishimoto Kenji , Hase Eiji , Tokizane Yu , Yano Taka-Aki , Kajisa Taira , Minamikawa Takeo , Yasui Takeshi
Published: September 2023

Herein, we integrated angle-scanning surface plasmon resonance (SPR) and angle-fixed SPR as a hybrid angular-interrogation SPR to enhance the sensing performance. Galvanometer-mirror-based beam angle scanning achieves a 100-Hz acquisition rate of both the angular SPR reflectance spectrum and the angle-fixed SPR reflectance, whereas the use of near-infrared light enhances the refractive index (RI) sensitivity, range, and precision compared with visible light. Simultaneous measurement of the angular SPR reflectance spectrum and angle-fixed SPR reflectance boosts the RI change range, RI resolution, and RI accuracy to 10–1–10–6 RIU, 2.24 × 10−6 RIU, and 5.22 × 10−6 RIU, respectively. The proposed hybrid SPR is a powerful tool for wide-dynamic-range RI sensing with various applications.
The neuroprotective effects of FG-4592, a hypoxia-inducible factor-prolyl hydroxylase inhibitor, against oxidative stress induced by alpha-synuclein in N2a cells
Authors: Fujimaki Ayaka , Ohuchi Kazuki , Takizawa Shinnosuke , Murakami Takanori , Kurita Hisaka , Hozumi Isao , Wen Xiaopeng , Kitamura Yoshihisa , Wu Zhiliang , Maekawa Yoichi , Inden Masatoshi
Published: September 2023

Parkinson’s disease (PD) is a neurodegenerative disorder characterized by the loss of dopaminergic neurons in the substantia nigra. The pathological hallmark of PD is the appearance of intraneuronal cytoplasmic α-synuclein (α-Syn) aggregation, called Lewy bodies. α-Syn aggregation is deeply involved in the pathogenesis of PD. Oxidative stress is also associated with the progression of PD. In the present study, to investigate whether a hypoxia-inducible factor (HIF)-prolyl hydroxylase (PH) inhibitor, FG-4592 (also called roxadustat), has neuroprotective effects against α-Syn-induced neurotoxicity, we employed a novel α-Syn stably expressing cell line (named α-Syn-N2a cells) utilizing a piggyBac transposon system. In α-Syn-N2a cells, oxidative stress and cell death were induced by α-Syn, and FG-4592 showed significant protection against this neurotoxicity. However, FG-4592 did not affect α-Syn protein levels. FG-4592 triggered heme oxygenase-1 (HO-1) expression downstream of HIF-1α in a concentration-dependent manner. In addition, FG-4592 decreased the production of reactive oxygen species possibly via the activation of HO-1 and subsequently suppressed α-Syn-induced neurotoxicity. Moreover, FG-4592 regulated mitochondrial biogenesis and respiration via the induction of the peroxisome proliferator-activated receptor-γ coactivator-1α. As FG-4592 has various neuroprotective effects against α-Syn and is involved in drug repositioning, it may have novel therapeutic potential for PD.
Capacitive Deionization
Authors: Xu Xingtao , Pan Likun
Published: September 2023

The exploration of new-family desalination techniques has become increasingly important in recent decades. Capacitive deionization (CDI) has attracted multidisciplinary interest as a promising alternative to the conventional desalination techniques of reverse osmosis and electro-osmosis, due to several attractive features such as low energy consumption, environmental friendliness, and high water utilization efficiency. CDI desalts saline water through storing ions in electrical double layers of porous carbons or by redox reactions with faradic materials.

This is the first book to specialise in CDI and aims to showcase the fundamentals and progressive achievements of the research. Chapters cover the timeline of CDI technologies, the expansion of new-family electrode materials, exploitation of new-concept CDI devices, and applications of CDI in other new areas. In addition, the book provides new insights into future directions for the development of CDI and other emerging nanotechnologies for addressing the energy-water nexus.

Edited by a founder of the field, the book will be of interest to those researching water desalination and purification across chemistry, materials science and environmental science.
Hydroxynitrile lyase engineering for promiscuous asymmetric Henry reaction with enhanced conversion, enantioselectivity and catalytic efficiency
Authors: Priya Badipatla Vishnu , Rao D. H. Sreenivasa , Chatterjee Ayon , Padhi Santosh Kumar
Published: September 2023

AtHNL variants displayed improved substrate scope enantioselectivity and catalytic efficiency in the asymmetric Henry reaction in the synthesis of diverse β-nitroalcohols including (R)-tembamide intermediate.
CuBr-mediated synthesis of 1,4-naphthoquinones via ring expansion of 2-aryl-1,3-indandiones
Authors: Zhang Xu , Wang Di , Chang Mengfan , Wang Wanya , Shen Zhi , Xu Xuefeng
Published: September 2023

A copper-mediated direct insertion of alkenes into unstrained ring 2-aryl-1,3-indandiones provides a one-carbon ring expansion strategy for 1,4-naphthoquinone synthesis.
Efficient catalytic conversion of CO2 to quinazoline-2,4(1H,3H)-diones by a dual-site anion-functionalized ionic liquid: reconsidering the mechanism
Authors: Chen Tingting , Guo Yujun , Xu Yingjie
Published: September 2023

[P4442]2[Hy] can simultaneously activate CO2 and 2-aminobenzonitrile due to the two N− sites. The H-bond site of [Hy]2− with 2-aminobenzonitrile is confirmed to be –NH2, and the key reaction intermediate is proposed and the mechanism is reconsidered.
Investigation of the sodium-ion transport mechanism and elastic properties of double anti-perovskite Na3S0.5O0.5I
Authors: Lian Sen , Li Congcong , Kang Chen , Ren Junfeng , Chen Meina
Published: September 2023

The study on the sodium ion transport mechanism and elastic properties of Na3S0.5O0.5I reveals that Na3S0.5O0.5I has better ductility and ionic conductivity.
Why do polyarginines adsorb at neutral phospholipid bilayers and polylysines do not? An insight from density functional theory calculations and molecular dynamics simulations
Authors: Tempra Carmelo , Brkljača Zlatko , Vazdar Mario
Published: September 2023

Adsorption of cell-penetrating peptides (CPPs) at cellular membranes is the first and necessary step for their subsequent translocation across cellular membranes into the cytosol.
Controlling supramolecular structures in iron tetrasulfonated phthalocyanine films through pH variation: implications for thin-film device performance
Authors: Kavazoi Henry S. , Martin Cibely S. , Maximino Mateus D. , Pereira Matheus S. , Rodríguez-Méndez María L. , Alessio Priscila
Published: September 2023

Improving the performance of thin film-based devices is a crucial factor for their successful application, mainly for organic electronic semiconductors.
A theoretical study on the ORR electrocatalytic activity of axial ligand modified cobalt polyphthalocyanine
Authors: Wang Guilin , Yang Xiaoli , Wang Ruiying , Jia Jianfeng
Published: September 2023

The ORR catalytic activity of cobalt polyphthalocyanine whose central Co atom is axially coordinated with ligands (CoPPc-L) was investigated via DFT calculations in alkaline medium. Introduction of appropriate axial ligands can promote the ORR catalytic activity.
Propane metathesis and hydrogenolysis over titanium hydride catalysts
Authors: Huang Mengwen , Tomimuro Yosuke , Miyazaki Shinta , Mine Shinya , Toyao Takashi , Hinuma Yoyo , Kanda Yasuharu , Kitano Masaaki , Shimizu Ken-ichi , Maeno Zen
Published: September 2023

Propane metathesis reactions over group 2–5 metal hydrides were investigated where TiH2 exhibited the highest butane formation amount. This study is the first example of carbon–carbon bond cleavage and formation over bulk metal hydrides.
Chemical characterization of microplastic particles formed in airborne waste discharged from sewer pipe repairs
Authors: Peterson Brianna N. , Morales Ana C. , Tomlin Jay M. , Gorman Carrie G. W. , Christ Peter E. , Sharpe Steven A. L. , Huston Shelby M. , Rivera-Adorno Felipe A. , O'Callahan Brian T. , Fraund Matthew , Noh Yoorae , Pahari Pritee , Whelton Andrew J. , El-Khoury Patrick Z. , Moffet Ryan C. , Zelenyuk Alla , Laskin Alexander
Published: September 2023

Microplastic particles are of increasing environmental concern due to the widespread uncontrolled degradation of various commercial products made of plastic and their associated waste disposal.
Hydrogen-bonding enables two-dimensional metal/semiconductor tunable contacts approaching the quantum limit and the modified Schottky–Mott limit simultaneously
Authors: Liu Dexing , Liu Ziyi , Zhu Jiahao , Zhang Min
Published: September 2023

This first-principles study proposes utilising hydrogen-bonding to overcome the van der Waals gap and demonstrates Ohmic contacts approaching the quantum limit and the modified Schottky-Mott limit in various two-dimensional semiconductor systems.
Self-healing, recyclable, thermally adaptive shape memory functional biopolymers based on multiple dynamic covalent bonds and hydrogen bonds derived from castor oil and vanillin
Authors: Nie Yuan , Li Mei , Li Shouhai , Lin Mingtao , Yao Na , Deng Tianxiang , Feng Xiao , Yang Xiaohua , Ding Haiyang , Xu Lina
Published: September 2023

The development of recyclable biopolymers from renewable resources is of great importance to sustainable development and environmental protection.
Dithiocarbazate–Zn(ii) complexes for photodynamic therapy and chemotherapy against lung cancer
Authors: Deng JunGang , Wu YouRu , Li AiLi , Pan WeiPing , Hou LiXia , Wu DaQi , Zhang ZhenLei , Yang Feng , Gou Yi
Published: September 2023

The Zn(ii) complex could efficiently produce ˙O2− to damage lung cancer cells by photodynamic therapy. Simultaneously, the complex can cause cell damage by chemotherapy.
Increased radical scavenging activity of thymoquinone and l-ascorbic acid dual encapsulated in palmitoyl-chitosan nanoparticles in a human normal lung fibroblast, MRC-5 due to synergistic antioxidative effects
Authors: Othman Nurhanisah , Md. Jamil Siti Nurul Ain , Masarudin Mas Jaffri , Jusoh Ruqayyah Ainul Bashirah Mohd , Alamassi Mohammed Numan
Published: September 2023

Less effective antioxidant supplementation in combating free radicals is often related to the lack of the formulation of carriers.
Phyto-fabrication of ultrafine nanoscale holmium oxide HT-Ho2O3 NPs and their biomedical potential
Authors: Ahmed Mohamed Hamze Elsayed , Khalil Ali Talha , Hkiri Khaoula , Ayaz Muhammad , Usman Assad , Sadiq Abdul , Ullah Farhat , Hussain Ishtiaq , Maaza Malik
Published: September 2023

In this study holmium oxide nanoparticles (Ho2O3 NPs) are fabricated using Hyphaene thebaica extracts as a bioreductant.
Evaluating the electrocatalytic activity of flower-like Co-MOF/CNT nanocomposites for methanol oxidation in basic electrolytes
Authors: Kotp Amna A. , Abdelwahab Abdalla , Farghali Ahmed A. , Rouby Waleed M. A. El , Enaiet Allah Abeer
Published: September 2023

A flower-like structure of cobalt-based metal–organic framework/CNTs composites is prepared using a facile and fast ultrasonication method. The Co-MOF50%CNTs nanocomposite exhibits a unique current density oxidation peak of 35 mA cm−2due to a synergistic effect between the Co-MOF and the CNTs.
Revealing the role of aniline in assisting SnO2 electrocatalytic CO2 reduction to HCOOH: via the perspective of the reaction pathway
Authors: Zhang Yuning , Jiang Hao , Wang Kangpeng , Niu Dongfang , Zhang Xinsheng
Published: September 2023

Grafted aniline formed an innovative carbamate intermediate (NHCOO*) with CO2 during catalyzing CO2ER to generate HCOOH, thus reducing the reaction energy barrier and accelerating the reaction kinetics of the rate-controlling step.
Nanoengineered Au–carbon nitride interfaces enhance photocatalytic pure water splitting to hydrogen
Authors: Silva Ingrid F. , Roy Soumyabrata , Kumar Pawan , Chen Zhi Wen , Teixeira Ivo F. , Campos-Mata Astrid , Antônio Loudiana M. , Ladeira Luiz O. , Stumpf Humberto O. , Singh Chandra Veer , Teixeira Ana Paula C. , Kibria Md Golam , Ajayan Pulickel M.
Published: September 2023

A nanocomposite photocatalyst with engineered interfaces between Au and defect enriched carbon nitride for efficient pure water splitting under solar irradiation.
Polyprodrugs for tumor chemotherapy: from molecular structure to drug release performance
Authors: Liu Peng
Published: September 2023

The structure–property relationship of polyprodrugs was explored from the perspective of molecular structure, by discussing the effects of the conjugations and linkers on their drug content and drug releasing performance.
Development of business processes on sustainable procurement based on identification of policy and institutional factors in the LRT TOD apartment project
Authors: Hekmatsyar Danurwendho Fikri , Machfudiyanto Rossy Armyn
Published: September 2023

Sustainable procurement through construction procurement has considerable potential to advance a project's sustainability strategy in which the procurement of products, equipment, machinery, and services is an important aspect, especially in high-rise buildings. One of the main factors is the lack of policies and support from organizations for the proper and precise implementation of sustainable procurement. Currently, there are no structured guidelines for compiling business processes that are in accordance with project conditions in LRT TOD Apartments. The purpose of this research is the development of business processes for sustainable procurement based on identifying policy and institutional factors in the LRT TOD Apartment Project. The method in this study used three procurement experts to validate policy and institutional factors. With the expert's assessment, various factors were obtained on sustainable procurement policies and institutions, which could become the basis for business process development. The results of this study show that the existing procurement business process is improved based on integrating policy and institutional that correlate with each other to develop a sustainable procurement business process model for the LRT TOD apartment project.
A review on the success factors of crowdfunding-based to finance small-scale infrastructure projects
Authors: Berawi Mohammed Ali , Sari Mustika , Rianto Sultan Akbar , Susantono Bambang , Susilowati Suci Indah
Published: September 2023

Public-Private Partnership (PPP) schemes in delivering economic and social infrastructure are growing in developing countries worldwide. Various developing countries, including Indonesia, has also been preparing and developing numerous projects, ranging from larger-scale economic infrastructures that include toll roads to multifunction satellites and smaller-scale social infrastructures that include water supply, solid-waste management, and regional hospital projects. With the increasing numbers of smaller infrastructure projects proposed by the local government, attracting financers to invest in these projects is still a challenge the government faces. Financial institutions are still averse to making the appraisal and due diligence to such projects, owing to the nature of little historical evidence of private finance involvement in small-scale infrastructure finance. In some western countries, citizens have taken the initiative to forward and finance their local infrastructure development due to realizing the social, economic, and environmental benefits of civic projects for the local community. Theoretical research has shown the opportunity of utilizing crowdfunding for local urban infrastructure; however, the factors contributing to benefit from this finance method are yet to be identified. This paper seeks to answer questions on what success factors contribute to the opportunity to adapt the crowdfunding scheme to finance a smaller-scale urban infrastructure project by conducting qualitative literature review.
The prospect of utilizing recycled wastewater in conserving freshwater usage in an industrial park
Authors: Kurniawan Vittorio , Pranoto Wati Asriningsih , Tan Bryan
Published: September 2023

Recycled wastewater has been identified as an alternative source of domestic water. This paper assesses whether the utilization of recycled wastewater produced by an industrial park in Batam Island could reduce the freshwater extraction from the primary source. The analysis is carried out by probing the record of water usage and the sewage treatment plant’s production in the industrial park for almost 2 years. The recycled wastewater’s quality limits its usage only for gardening and toilet flushing. Even if it cannot cover all sorts of activities, utilizing recycled wastewater could conserve freshwater significantly. The industrial park also could reap another benefit by paying less for freshwater extraction. However, the existing plumbing system does not have a specific distribution line for both gardening and flushing. Therefore, the industrial park must rebuild the entire plumbing system lest the recycled wastewater would mix with the clean freshwater and prevent the workers from using it.
Overlay thickness evaluation based on Indonesian manual road design and shell pavement design method
Authors: Setyawan Ary , Sulistyojati Nicolas
Published: September 2023

Brebes Regency is one of the areas crossed by the north coast road (Pantura). This road is very important and forms the basis of land transportation traffic on the island of Java. We often encounter traffic jams on this road because it is part of a national road along the northern side of the island of Java. There are several treatments that are usually carried out to repair roads that have been damaged, one of which is the addition of a thick layer or overlay. Therefore, researchers conducted an analysis study of the added layer thickness (overlay) on the road to find out and analyze the results of the 2017 Road Pavement Design Manual overlay method and the Shell Pavment Design Method (SPDM) program method. In this study, the data collected were primary data and secondary data, namely road profiles obtained directly from field observations, average daily traffic data (LHR) and Falling Weight Deflectometer (FWD). The results of the overlay calculation using MDP 2017 obtained an overlay value of 50 mm and the SPDM program was 46 mm. An effective method in terms of data requirements, calculations and time is the SPDM program because when it is used it can be easily and calculated automatically in the program, whereas if you use MDP 2017 the calculations are still manual and the determination of the overlay thickness uses a graphic that accurately adjusts the user's foresight and will affect the results of the overlay calculation.
Relationship of present serviceability index for flexible and rigid pavement in urban road damage assessment using pavement condition index and international roughness index
Authors: Isradi Muhammad , Prasetijo Joewono , Aden Thomas Setiabudi , Rifai Andri Irfan
Published: September 2023

Functional and structural failures in the pavement structure can be distinguished. The Road state Value measures the functional state of road pavements in managing flexible and stiff pavements for urban roadways in Indonesia. The pavement condition assessment is based on the unevenness of the pavement surface, rutting, and direct surface damage. This research aims to assess the worth of road damage on flexible and rigid pavements and establish a special relationship between Present Serviceability, International Roughness, and Pavement Condition Index. Direct observation in the field is utilized to obtain data on the different types of damage. According to the field survey data, the most common types of damage for flexible pavements were filled (56), followed by longitudinal cracks (18) for rigid pavements. PSI, IRI, and PCI models have a strong association, with the R2 value found to be acceptable. It shows a high correlation with scores above 90% for good, medium, and inferior roads. The resulting equations establish a strong link between IRI and PCI. Furthermore, the validation findings demonstrate that the model is entirely accurate.
Effectiveness of soil improvement for deep excavation in under-consolidated soil: A case study
Authors: Thendar Yoshua , Lim Aswin , Lyman Ryan Alexander
Published: September 2023

The main objective of this article is to investigate the effectiveness of soil improvement methods, such as jet grouting and cement deep mixing, for a deep excavation in under-consolidated soil. A well-documented case history, located in Zhuhai, China, was used for analysis. The analyses were conducted using two-dimensional plane-strain finite element analysis. The studies included an examination of the effect of wall length on lateral wall deformation, the effect between the degree of consolidation and lateral wall deformation, and the influence of soil improvement on lateral deformation and settlement. The deformations induced by under consolidating states are greater than those caused by normally consolidated states. A similar trend was found with or without soil improvement. The greater the degree of consolidation is, the smaller the deflection of the wall. In this case, the retaining wall's length is well designed and stable, but the analysis results showed that the wall length can be shorter than the constructed length. Massive jet grouting was used behind the left wall to successfully reduce wall deflection and ground surface settlement. Finally, deep cement mixing has only a small effect on reducing wall deflection and ground surface settlement.
Simple house foundation models in potential landslide area (case study: Bojong Koneng Village, Babakan Madang Sub-District, Bogor District)
Authors: Hasanah Mauliyatul , Asokawati Fajrina Citra , Elvirandra Laura , Fansuri Muhammad Hamzah
Published: September 2023

Bogor Regency is a land area that has varied geomorphological conditions, mostly in the form of plateaus, hills and mountains with constituent rocks dominated by volcanic eruptions. This study was conducted to determine the topographic and geotechnical conditions at the Bojong Koneng location to determine the prediction of landslide areas, obtain the foundation planning criteria for simple houses in vulnerable areas, and design a foundation model suitable for simple houses in erosion-prone areas based on field survey in Curug Village, Bojong Koneng Village, Babakan Madang, Bogor Regency, West Java With a slope ranging from 10°-25° sloping to the north which is a soft black clay layer with the slope of the layer in the direction of the slope. In the existing slope model without Strauss piles, the safe slope stability factor (SF) is only around 1.02, so the slope is not fully declared safe. The installation of Strauss piles fondation theoretically helpbaas to improve slope stability for hard soil conditions at a relatively shallow depth from the ground surface or in this study at a depth of 5.20 meters. The SF value at the tip of the strauss pile is only attached to the hard soil layer, almost approaching the condition of the strauss pile penetrating 1.00 m deep hard soil. However, when viewed from the sliding plane of the Strauss pile fondation tip which is only attached to the hard soil layer, it behaves like a pile so this needs to be avoided in planning.
Designing a drilled pile foundation in a dual system structure
Authors: Wiyono Daud Rahmat , Setiawan Deni , Desiani Asriwiyanti , Nugraha Andrias Suhendra , Kristianto Anang , Loekito Jimmy Agustian , Prijono Agus , Chandra Jonathan
Published: September 2023

Drilled pile foundations that have been set in hard soil are generally used for buildings with shear walls. By nature, a drilled pile foundation can withstand moments because of the drilled pile’s dimensions and the amount of reinforcement installed. This study presents a structural analysis of a 10-story building supported by a dual system structure to meet earthquake requirements. The results show that, by using a dual system, the earthquake requirements (natural period, modal, story shear, story drift, and P-Delta) are met. Other results show that the base shear force of the shear wall has a value of 58.76% for the X-direction and 63.72% for the Y-direction. The base shear force value of the frame is 41.23% for the X-direction and 36.27% for the Y-direction. Therefore, the requirements of the dual system are met because the resisted base shear force of the frame is higher than 25%. The dual system provides a normal force value of 24.32% for the shear wall, while the frame carries 75.67%. The bearing capacity of the drilled pile with a safety factor = 2.5 is 162 tons for a diameter of 50 cm, 214 tons for a diameter of 60 cm, 340 tons for a diameter of 80 cm, 493 tons for a diameter of 100 cm, 672 tons for a diameter of 120 cm, and 993 tons for a diameter of 150 cm. The result of the pile driving analyzer test values for a 120 cm diameter range from 988 to 1,232 tons.
Axial compressive behavior of green sustainable Water Hyacinth & Bio-Resin (WHBR) FRP composites-confined circular concrete
Authors: Honestyo Aoron , Tavio  , Ardhyananta Hosta , Christianto Daniel
Published: September 2023

This study examines the behavior of circular concretes externally confined by green sustainable WHBR FRP containing water hyacinth fiber ropes and bio-resin. This study principally purposes to discover the axial stress-strain relationship behavior of WHBR FRP-confined circular concrete. A total of 10 circular concretes with a dimension of 150×300 mm were cast, strengthened with one to four layers of WHBR FRP, and tested under compression. The stress and the deformability of WHBR FRP-confined circular concretes were observed to be increased along with the addition of WHBR FRP layers. The accurateness of existing ultimate stress and strain models of natural FRP-confined circular concrete was evaluated using the test results. Indicating the need for the newly developed models to precisely predict the ultimate stress and strain values of WHBR FRP-confined circular concrete, newly developed models were developed to be precise in estimating the ultimate stress and strain of WHBR FRP-confined circular concrete. Keywords concrete, confinement, disaster risk reduction, stress-strain, water hyacinth fiber.
Mechanical strengths and ultrasonic pulse velocity evaluation of supersulfated cement mortar containing sodium sulfate
Authors: Djayaprabha Herry Suryadi , Aliusius Jean Jessica , Pangestu Jerrica , Candra Tiffany
Published: September 2023

The purpose of this study is to evaluate the mechanical strengths and ultrasonic pulse velocity (UPV) of supersulfated cement mortar incorporating sodium sulfate (Na2SO4) with various amounts of SO3 at 0 wt.%, 2.5 wt.%, 7.5 wt.%, and 10 wt.%. The results exhibited that the inclusion of Na2SO4 could significantly improve the 28-day compressive strength by about 2.94 to 4.26 times higher and the 28-day flexural strength by about 2.89 to 3.78 times higher, when compared with the mixture without Na2SO4. The 28-day UPV value for the mixture without the addition of Na2SO4 was 2931 m/s, which can be classified as very poor mortar quality; however, with the addition of Na2SO4, the 28-day UPV value could improve to 3687-3942 m/s, which can be classified as good to excellent mortar quality. In addition, an exponential equation with a coefficient of determination (R2) of 0.975 was also proposed to predict the relationship between compressive strength and UPV value. Based on the experimental findings, it could be concluded that the inclusion of Na2SO4 had a beneficial effect on enhancing the mechanical strengths and mortar quality of supersulfated cement mortar.
Effect of acrylic copolymer addition and interface treatment on the bond strength of polymer modified mortar and concrete
Authors: Caesar Rachmad Aditya , Kristiawan Stefanus Adi , As’ad Sholihin
Published: September 2023

Polymer-modified mortar is made of mortar with the addition of copolymer acrylic. An acrylic copolymer is one of the additives suitable for mortar repair because it can increase the overall durability of cement. This research investigates the bond strength between polymer-modified mortar and concrete substrate with treatment on the concrete surface. This research investigation focused on determining the effect of acrylic copolymers on bond strength. In addition, this study also investigated the effect of surface treatment with the addition of a bonding agent on bond strength. This study uses a test method: the slant shear test. The results showed that adding a bonding agent and acrylic copolymer increased the adhesive strength of the repair mortar on the concrete substrate. Generally, the higher the amount of bonding agent, the greater the expected bond strength. Meanwhile, in a ratio of 1:1.5 with cement, the acrylic copolymer can maximize bond strength.
Strength of paving block by replacing up to 40% of fine aggregate by weight with plastic waste
Authors: Sandjaya Arif , Sabrina Ovy , Novita Tan
Published: September 2023

Plastic waste in Indonesia in 2020-2021 occupies the second largest position in terms of the amount of accumulated waste, namely 17.15% and 15.54% after the type of food waste. Plastic is difficult to degrade or is difficult to decompose in the soil. Plastic dumped into the sea is dangerous. In 2020, Physeter Macrocephalus (protected whale) was found to have died from ingesting plastic and not digesting it properly. Replacing/modifying materials is an alternative to help overcome waste environmental problems in the construction sector. Most of the research using waste is the manufacture of concrete with certain compressive strength criteria. As a form of support for green building, research utilizes plastic waste to replace some of the fine aggregate in the manufacture of paving blocks. This study reviewed the strength class of paving block Grade B or Min. 17 MPa, where fine aggregate is replaced by plastic waste up to 40%. Plastic waste is cleaned and cut into small pieces. The results showed that the replacement of fine aggregate with plastic waste up to 30% still produced Grade B or Min. 17 MPa.
Optimum buckling-restrained braces application to enhance seismic performance of RC frame with curtailed walls
Authors: Maulana Taufiq Ilham , Syamsi Muhammad Ibnu , Majima Ryo
Published: September 2023

Reinforced concrete (RC) frames are commonly built together with shear walls. In high seismicity regions, constructing shear walls along the frame’s height is proven ineffective. Thus, in numerous studies, using shear walls at a certain height is beneficial, and this kind of structure is popularly known as curtailed shear walls. However, the area above the curtailed walls could suffer significant deformation under high seismic load and upgrading the seismic performance in those upper parts is needed. In this study, the seismic performance of 2-dimension RC frame building with curtailed walls is improved by installing buckling-restrained braces (BRBs). The seismic response is performed through non-linear dynamic analysis using an open-licensed software, STERA_3D. To determine the ideal number and location of the BRBs above the curtailed walls, a classical genetic algorithm is exercised using Python language programming. The parameters involved in optimizations are inter-story drifts, the number of BRBs, and damage indices surround the frames. The result shows that the configuration of BRBs resulted from the optimization could reduce the excessive amount of displacement along the building height. Moreover, the genetic algorithm could give the fittest number and location of BRBs installation to upgrade the seismic response of RC frames with partial shear walls.
Atom-field system: Effects of squeezing and intensity dependent coupling on the quantum coherence and nonclassical properties
Authors: Algarni Mariam , Berrada Kamal , Abdel-Khalek Sayed
Published: September 2023

Recently, Kumar Gerry et al. [Phys. Rev. A 90, 033427 (2014) https://doi.org/10.1103/PhysRevA.90.033427] studied the coherence control in a six-level atom through solving the Schrödinger equation in the field-interaction representation. In this manuscript, we investigate the interaction between a six-level atomic system (SLAS) and a single-mode field initially prepared in a squeezed coherent state. We extend the Jeans–Cummings model to describe the interaction between the atom and the squeezed field (SF) and the system dynamics. We examine the time evolution of the atomic coherence, non-local correlation, statistical properties within the bipartite system in the presence and absence intensity-dependent coupling (I-DC) for different squeezing regimes of the field.
Tsetse fly ecology and risk of transmission of African trypanosomes related to a protected forest area at a military base in the city of Abidjan, Côte d’Ivoire
Authors: Konan Yao Jean Rodrigue , Berté Djakaridja , Ta Bi Tra Dieudonné , Demoncheaux Jean-Paul , Sauzet Sylvie , Watier-Grillot Stéphanie , Kouadio Koffi Alain De Marie , N’dri Louis , Coulibaly Bamoro , Solano Philippe , Ravel Sophie , Ségard Adeline , Kaba Dramane , De Meeûs Thierry , Djohan Vincent , Jamonneau Vincent
Published: September 2023

African trypanosomoses, whose pathogens are transmitted by tsetse flies, are a threat to animal and human health. Tsetse flies observed at the military base of the French Forces in Côte d’Ivoire (FFCI base) were probably involved in the infection and death of military working dogs. Entomological and parasitological surveys were carried out during the rainy and dry seasons using “Vavoua” traps to identify tsetse fly species, their distribution, favorable biotopes and food sources, as well as the trypanosomes they harbor. A total of 1185Glossina palpalis palpalistsetse flies were caught, corresponding to a high average apparent density of 2.26 tsetse/trap/day. The results showed a heterogeneous distribution of tsetse at the FFCI base, linked to more or less favorable biotopes. No significant variation in tsetse densities was observed according to the season. The overall trypanosomes infection rate according to microscopic observation was 13.5%. Polymerase chain reaction (PCR) analyses confirmed the presence ofTrypanosoma vivaxandT. congolenseforest type, responsible for African animal trypanosomosis. Our findings suggest that there is a risk of introduction and transmission ofT. brucei gambiense, responsible for human African trypanosomiasis, on the study site. This risk of transmission of African trypanosomes concerns not only the FFCI base, but also inhabited peripheral areas. Our study confirmed the need for vector control adapted to the eco-epidemiological context of the FFCI base.
Positionspapier der Arbeitsgruppe Chronisch Entzündliche Darmerkrankungen der ÖGGH zum Einsatz von Vedolizumab subkutan
Authors: Reider Simon , Novacek Gottfried , Haas Thomas , Gröchenig Hans-Peter , Platzer Reingard , Koch Robert , Kump Patrizia Katharina , Reinisch Walter , Moschen Alexander
Published: September 2023

Der humanisierte monoklonale anti-α4β7-Integrin-Antikörper Vedolizumab ist eine von mehreren biologischen Therapieoptionen bei moderaten und schweren Verläufen von Colitis ulcerosa und Morbus Crohn. Im Zuge des VISIBLE-Studienprogramms wurde zusätzlich zur etablierten intravenösen Verabreichung eine subkutane Administrationsform von Vedolizumab erprobt. Die Arbeitsgruppe CED der Österreichischen Gesellschaft für Gastroenterologie und Hepatologie (ÖGGH) fasst in diesem Positionspapier die Datenlage zur subkutanen Applikation von Vedolizumab zusammen, ergänzt ein bestehendes Positionspapier zum Stellenwert von Vedolizumab als Erstlinientherapie bei chronisch entzündlichen Darmerkrankungen und bietet praxisnahe Empfehlungen zur praktischen Anwendung.
Moderately severe acute pancreatitis after snake bite: a case report from Southern China
Authors: Cao Ronglai , He Jinli , Yu Zhengping , Chen Youxiang , Zhu Liang
Published: September 2023

Venomous snakebites are not rare worldwide, and this is also the situation in the mountainous regions of southern China, where they pose a serious health risk to the local population. Snake venom usually causes a variety of clinical symptoms, such as local pain and swelling, systemic coagulation system abnormalities, and shock, but rarely leads to acute pancreatitis. In this report, we presented a rare case of moderately severe acute pancreatitis caused by snake venom even after prompt antivenom treatment. The patient was relieved, obviously, with effective treatment of acute pancreatitis and was discharged without severe complications. Although acute pancreatitis after snake bite is a rarity, its serious complications and lethality still deserve our utmost attention, and timely and standardized treatment of acute pancreatitis is needed in addition to antivenom treatment.
Chemical Synthesis of Substituted Naphthalene Derivatives: A Review
Authors: Hussain Nazar , Maheshwari Mittali
Published: September 2023

This review outlines progress in the synthesis of substituted naphthalene derivatives. Naphthalene and its derivatives exhibit various biological activities such as anti-inflammatory, anticancer, antiviral, antitubercular, antimicrobial, antihypertensive, antidiabetic, etc. Several strategies have been developed for the construction of naphthalene derivatives, primarily focused on metal-catalyzed reactions (palladium, copper, zinc, rhodium, platinum, nickel, etc.,) and Lewis acid catalyzed transformations. This review discusses the preparations of naphthalene derivatives using various salts such as gallium chlorides, gold chlorides, gold bromides, various gold complexes as well as Brønsted acids like triflic acid and trifluoroacetic acid, and Lewis acids such as boron trifluoride etherate. Additionally, miscellaneous types of reactions are explored involving both metal and Lewis acids. The transformational approaches covered in this review include cycloadditions, carboannulations, benzannulations, electroannulations, rearrangements, and cross-dehydrogenative coupling reactions. Overall this review provides a comprehensive and up-to-date account of the current state of preparations of substituted naphthalenes, highlighting their medicinal and industrial importance.

1 Introduction

1.1 Medicinal Importance of Naphthalenes

2 Synthesis of Substituted Naphthalenes

2.1 Metal-Catalyzed Reactions

2.1.1 Palladium-Catalyzed Reactions

2.1.2 Copper-Catalyzed Reactions

2.1.3 Zinc-Catalyzed Reactions

2.1.4 Iron-Catalyzed Reactions

2.1.5 Rhodium-Catalyzed Reactions

2.1.6 Platinum-Catalyzed Reactions

2.1.7 Nickel-Catalyzed Reactions

2.1.8 Other Metal-Catalyzed Reactions

3 Lewis Acid Catalyzed Reactions

4 Miscellaneous Reactions

5 Conclusion
Evaluation of Mandibular Bone Microstructure in CT Scans of People with Sickle Cell Disease
Authors: Almeida Viviane de Sousa Moreira , Soares Mariana Quirino Silveira , Leite-Ribeiro Patricia Miranda , Rubira-Bullen Izabel Regina Fischer , Lins-Kusterer Liliane Elze Falcão , Sarmento Viviane Almeida
Published: September 2023

Objective Sickle cell disease (SCD) is a common inherited disease, and is characterized by a genetic modification that determines the production of a hemoglobin with altered morphology. This anatomical change of hemoglobin leads to vaso-occlusive disorders and premature hemolysis of the cell, causing chronic anemia and bone marrow hyperplasia due to increased hematopoietic demand. As a consequence, several skeletal changes are reported in the skull, spine, ribs, pelvis, femur, and metatarsals. In the craniofacial region, dentofacial deformities are described, especially maxillary protrusion. However, studies evaluating bone microarchitecture are scarce. The aim of this study is to evaluate the mandibular bone microstructure of people with SCD on computed tomography (CT) scans.

Materials and Methods Morphometric parameters were analyzed on CT scans of the mandible of people with SCD and people without this disease or any other disease affecting bone metabolism, matched for sex and age.

Statistical Analysis The results were compared by Student's t-test for paired samples and for an error probability of 5%.

Results This study demonstrated that the mandibular bone of people with SCD presents significantly less number, connectivity and thickness of bone trabeculae, as well as having a lower fractal dimension and greater porosity.

Conclusion Mandibular bone of people with SCD has lower bone density and more widely spaced trabeculae.
Gemination of an Erupted Mandibular Third Molar: A Short Presentation of an Exceptionally Rare Clinical Occurrence
Authors: Brauer Hans Ulrich , Bartols Andreas
Published: September 2023

Double teeth, like fusions and geminations, are rare disorders of tooth development. In this short case presentation, we describe the unique appearance of a fully erupted mandibular wisdom tooth in a 72-year-old patient whose tooth exhibited gemination. This was possible because tooth 46 had to be removed from the patient at the age of 20 and the missing molar was not replaced. This geminated tooth of 48 had been in function for almost 50 years and finally had to be removed due to a periodontal inflammation. To the best of our knowledge, this is the first case presented of this dental anomaly for a fully erupted lower wisdom tooth.