bluuebunny/crossref_metadata_2025 huggingface dataset:
Ultra-broadband near-perfect metamaterial absorber for photovoltaic applications
Authors: Nakti Partha Pratim , Sarker Dip , Tahmid Md Ishfak , Zubair Ahmed
Published: October 2023

An ingenious high-efficiency double-grating ultra-thin metamaterial-based ultrabroadband light absorber, consisting of AlGaAs–Ge–GaAs on titanium, was engineered and analyzed.
Third-order nonlinear optical properties of the host–guest complexes formed between fullerenes and cycloparaphenylene ([n]CPP: n = 9, 10 and 11)
Authors: Wang Li , Liu Yan-Li , Li Quan-Jiang , He Di , Chen Sheng-Hui , Zhao Yan-Liang , Wang Mei-Shan
Published: October 2023

Among [9–11]CPPs, [10]CPP is the most ideal fullerene encapsulator. With the increase of the CPP ring size, the polarizability values and second hyperpolarizability values of [9–11]CPP⊂C60 increase gradually.
A thermo-regulated highly regioselective mono and dihalogenations of phenols and anilines in water employing new Lewis base adducts (LBAs) [DBUBr]+Br− and [DBUI]+I− as green reagents: a simple approach
Authors: Gavinolla Vijayalaxmi , Thangalipalli Swathi , Bandalla Siddarama Goud , Panduga Ramaraju , Neella Chandra Kiran
Published: October 2023

A temperature regulated easy to handle aqueous phase regioselective halogenation of phenols and anilines employing New Lewis base adducts (LBAs) is reported.
Adsorptive removal of tetracycline and methylene blue from aqueous solution with a water resistance copper-based metal–organic framework
Authors: Zhu Yingzhi , Li Yan , Ma Na , Dai Wei
Published: October 2023

Copper-1,3,5-benzenetricarboxylic acid (Cu–BTC) is a research hotspot for metal–organic frameworks (MOFs) because of its remarkable intrinsic structural features.
Photoredox-catalyzed direct C–H monofluoromethylation of heteroarenes
Authors: Ramkumar Nagarajan , Plantus Ketrina , Ozola Melita , Mishnev Anatoly , Nikolajeva Vizma , Senkovs Maris , Ošeka Maksim , Veliks Janis
Published: October 2023

We report a photo-redox catalyzed radical C–H monofluoromethylation of heterocycles, thus demonstrating this process and the importance of the monofluoromethyl unit in medicinal and drug discovery purposes.
Copper-guided tuning of supramolecular nano-assembly in pseudopeptide-based soft bioinspired materials
Authors: Tamrakar Arpna , Nigam Kamlesh Kumar , Pandey Mrituanjay D.
Published: October 2023

TheC2-symmetric pseudopeptides have been developed as a state-of-the-art soft matter for recognition and supramolecular self-assembly. The copper-guided tuning of nano-assembly is promising for material nano-architectonics applications.
Optical properties of orthorhombic germanium sulfide: unveiling the anisotropic nature of Wannier excitons
Authors: Arfaoui Mehdi , Zawadzka Natalia , Ayari Sabrine , Chen Zhaolong , Watanabe Kenji , Taniguchi Takashi , Babiński Adam , Koperski Maciej , Jaziri Sihem , Molas Maciej R.
Published: October 2023

Strong polarization-dependent effects on the optical response in the low-symmetry orthorhombic crystal structure of GeS and the emergence of mixed exciton states due to anisotropy-induced symmetry breaking.
Lattice strain induced d-band centre engineering enabled pseudocapacitive energy storage in 2D hypo–hyper electronic V-NiCo2O4 for asymmetric supercapacitors
Authors: Maitra Soumyajit , Roy Krishnendu , Ghosh Dibyendu , Kumar Praveen
Published: October 2023

Strain induced d-band centre tailoring for boosting faradaic reaction mechanisms involved in pseudocapacitive energy storage.
Ice crystal sublimation for easily producing MnO2 cathodes with hierarchically porous structure and enhanced cyclic reversibility
Authors: Si Xiangru , Zhu Ruijie , Yang Yang , Yang Huijun , Sheng Nan , Zhu Chunyu
Published: October 2023

After undergoing a simple freeze-drying process, MnO2 cathodes show improved charging and discharging capacity, as well as superior cycling performance, thanks to their hierarchically porous structure.
Self-supporting, hierarchically hollow structured NiFe-PBA electrocatalyst for efficient alkaline seawater oxidation
Authors: Zhang Kaiyan , Xu Mingze , Wang Jianying , Chen Zuofeng
Published: October 2023

A self-supporting, highly porous NiFe-PBA catalyst with a hierarchically hollow nanostructure is prepared for efficient overall seawater electrolysis, which holds great promise for sustainable hydrogen generation.
Tuneable-by-design copper oxide nanoparticles in ionic liquid nanofluids
Authors: Boudie Claire , Maréchal Manuel , Ah-Lung Guillaume , Jacquemin Johan , Nockemann Peter
Published: October 2023

Precisely controlling the anion structure of ionic liquids enables tuning of CuO nanoparticle size and properties. This ionic liquid nano-structuring provides a template for generating uniform and tailored CuO nanoparticles.
Investigation of sponge medium for efficient concurrent tumor treating fields and radiotherapy for glioblastomas
Authors: Zheng Jiajun , Zhu Huanfeng , Guo Wenjie , Gao Chenchen , Guo Jiahao , Sun Li , Xu Geng , Wang Zhi , Dai Baoying , Gu Ning , He Xia
Published: October 2023

The selected sponge medium that can be used in concurrent TTFields and radiotherapy for GBMs exhibits almost no negative impact on radiotherapy dosimetry and CT imaging, corroborating its great viability and safety in clinical applications.
Engineering the crystal facets of α-MnO2 nanorods for electrochemical energy storage: experiments and theory
Authors: Wang Yifan , Lu Zhengwei , Wen Peipei , Gong Yinyan , Li Can , Niu Lengyuan , Xu Shiqing
Published: October 2023

The α-MnO2 nanorods with {310} facets exposed exhibit higher specific capacitance due to the stronger adsorption capacity and lower diffusion barriers for sodium ions.
Synthesis and characterization of Mg-hydroxyapatite and its cellulose hybridized structure as enhanced bio-carrier of oxaliplatin drug; equilibrium and release kinetics
Authors: Okasha Alaa T. , Abdel-Khalek Ahmed A. , Rudayni Hassan Ahmed , Al Zoubi Wail , Alfassam Haifa E. , Allam Ahmed A. , Abukhadra Mostafa R.
Published: October 2023

An advanced form of magnesium-doped hydroxyapatite (Mg HAP) was synthesized and hybridized with cellulose fibers, producing a safe biocomposite (CF/Mg HAP) as an enhanced delivery structure of traditional oxaliplatin (OXPN) chemotherapy drug during the treatment stages of colorectal cancer.
Comprehensive analysis of crystal structure, spectroscopic properties, quantum chemical insights, and molecular docking studies of two pyrazolopyridine compounds: potential anticancer agents
Authors: Polo-Cuadrado Efraín , López-Cuellar Lorena , Acosta-Quiroga Karen , Rojas-Peña Cristian , Brito Iván , Cisterna Jonathan , Trilleras Jorge , Alderete Joel B. , Duarte Yorley , Gutiérrez Margarita
Published: October 2023

In this study, two pyrazolo[3,4-b]pyridine derivatives (4a and 4b) were grown using a slow evaporation solution growth technique and characterized by FT-IR, HRMS, 1H/13C NMR spectroscopy, and X-ray crystallography.
Proposal, design, and cost analysis of a hydrogen production process from cellulose via supercritical water gasification
Authors: Masuda Taichi , Ikesaka Naoki , Muranaka Yosuke , Tanabe Katsuaki
Published: October 2023

A cellulose-derived hydrogen production process via supercritical water gasification is designed. The required energy cost for our process is calculated significantly lower than those for other various representative hydrogen production methods.
Oxygen-doped antimonene monolayer as a promising anchoring material for lithium–sulfur batteries: a first-principles study
Authors: Zhu Victor , Luo Xuan
Published: October 2023

To effectively mitigate the dissolution of lithium polysulfides (Li2Sx) in the electrolyte, the search for an effective anchoring material is crucial.
Catalytic Mannich reaction of acrylic acid polymers and their application in leather retanning
Authors: Ma Jianzhong , Zhao Jiamin , Zhang Hui , Tian Zhenhua , Liu Qiwu , Yang Na , Zhang Wenbo
Published: October 2023

The participation of acrylic acid, acrylamide and methyl acrylate in the Mannich reaction by means of the catalyst NaH was studied in this work. The optimal reaction conditions for the homopolymers were obtained via orthogonal experiments.
Progression from Chinese High School onto a TransNational Chinese-UK University joint BSc degree in chemistry; an international study focussing on laboratory practical skills
Authors: Hyde Julie , Wright James S. , Xie Andi
Published: October 2023

An investigation was carried out into laboratory practical skills development and students’ specific challenges in transition from laboratory chemistry at Chinese High School (HS) to a fully English style university laboratory course. To the best of our knowledge this is the first study of its type investigating practical laboratory skills for a TransNational Education (TNE) Chemistry BSc (3 + 1) degree programme between the United Kingdom (UK) and the People's Republic of China (PRC). Internationalization of such courses have become popular in recent years. The two universities in this study are Nanjing Tech University (NJTech) and the University of Sheffield (UoS). Our study is exploratory with the aim to determine the level of practical laboratory skills the NJTech students gained from High School and the challenges they encountered as they joined a UK degree laboratory programme delivered in English. For this international study, a mixed-methods approach was followed using qualitative inductive and deductive methodologies. Using open-ended questions it was found that particular challenges in the transition were around the lack of prior laboratory experience and the development of many new skills, laboratory notebook documentation, laboratory safety, and studying laboratory chemistry in a second language. Students welcomed these challenges and felt they were developing into professional chemists. Specific recommendations are made for international TNE degrees with laboratory programmes, particularly for those students who progress from Chinese High School through the Chinese GaoKao system into a western university chemistry laboratory programme. The scaffolded/structured curriculum design allowed for total and successful integration of the NJTech with the Sheffield home students during the final year of their BSc in Chemistry. After graduation, having gained high class degrees and becoming fluent in English many of the students progressed into Industry, and onto Masters or PhD programmes in the UK and throughout the world, suggesting internationalisation of students on our TNE programme was successful.
Construction of 4-hydroxycoumarin derivatives with adjacent quaternary and tertiary stereocenters via ternary catalysis
Authors: Zhang Mengchu , Zhang Tianyuan , Yu Sifan , Qiu Huang , Yusuf Abdulla , Xu Xinfang , Qian Yu , Hu Wenhao
Published: October 2023

We present a multicomponent reaction catalyzed by a Pd/amine/Brønsted acid ternary system. The approach facilitates the synthesis of substituted 4-hydroxycoumarin derivatives with adjacent quaternary and tertiary stereocenters through the assembly of two in situ generated active intermediates.
Synthesis of 3,3′-dihydroxy-2,2′-diindan-1,1′-dione derivatives for tautomeric organic semiconductors exhibiting intramolecular double proton transfer
Authors: Nakano Kyohei , Leong Iat Wai , Hashizume Daisuke , Bulgarevich Kirill , Takimiya Kazuo , Nishiyama Yusuke , Yamazaki Toshio , Tajima Keisuke
Published: October 2023

A new synthetic route for 3,3′-dihydroxy-2,2′-diindan-1,1′-dione derivatives allows the study of the intramolecular double proton transfer in the solid state, which could elucidate possible interplay between tautomerization and charge transport.
In situ recrystallization of zero-dimensional hybrid metal halide glass-ceramics toward improved scintillation performance
Authors: Li Bohan , Jin Jiance , Yin Meijuan , Han Kai , Zhang Yuchi , Zhang Xinlei , Zhang Anran , Xia Zhiguo , Xu Yan
Published: October 2023

We have developed high-performance glass-ceramic scintillators via in situ recrystallization from zero-dimensional hybrid metal halide glass counterparts composed of distinct organic cations and inorganic anions.
A novel shape-stabilized phase change material with tunable thermal conductivity for cold chain applications
Authors: Dixit Prakhar , Balwani Apoorv , Ambardar Tridib , Reddy Vennapusa Jagadeeswara , Maiti Tushar Kanti , Pandey Adarsh Kumar , Dasari Aravind , Chattopadhyay Sujay
Published: October 2023

Eutectic PCM was prepared with hexadecane and OM-18 using the ultrasonication-blending method. The eutectic system was found to contain 60 wt% OM-18 and 40 wt% hexadecane. The eutectic composite with EG was prepared by a direct impregnation method.
Exploiting grain boundary diffusion to minimize dendrite formation in lithium metal-solid state batteries
Authors: Yoon Jeong Seop , Sulaimon Hafeez , Siegel Donald J.
Published: October 2023

A multi-scale model reveals that the microstructure of the Li metal anode can impact the performance of solid-state batteries. Micron-sized, columnar grains are preferred for minimizing void formation at the solid electrolyte interface.
Remarkable thermoelectric efficiency of cubic antiperovskites Rb3X(Se & Te)I with strong anharmonicity
Authors: Zeng Shuming , Shen Qian , Guo Lina , Zhao Yinchang , Huang Hao , Li Geng , Tu Yusong
Published: October 2023

This study reported a novel class of antiperovskites Rb3X(Se & Te)I, which have ultralow lattice thermal conductivity and high thermoelectric efficiency with strong lattice anharmonicity.
p-State of surface oxygen for mediating the s-band center of a single-atomic Ag catalyst for enhanced catalytic property for the oxygen reduction reaction
Authors: Sun Fu-li , Fang Qiao-jun , Zhang Wei , Lin Cun-biao , Chen Wen-xian , Zhuang Gui-lin
Published: October 2023

The crucial role of the s-band center of single-atomic Ag catalysts on their catalytic selectivity for the ORR is theoretically uncovered.
Exploring the impact of metal oxide coating and metal atom doping on the electrochemical performance of Ni-rich cathode materials
Authors: Bunyanidhi Panyawee , Phattharasupakun Nutthaphon , Duangdangchote Salatan , Prempluem Surat , Joraleechanchai Nattanon , Sawangphruk Montree
Published: October 2023

In this research, we systematically examine the impact of atomic cation dopants and metal oxide coatings, including their respective oxidation states, on the electrochemical performance of Ni-rich NCA90 cathode materials.
Osteoimmune-modulating and BMP-2-eluting anodised 3D printed titanium for accelerated bone regeneration
Authors: Ali Masood , He Yan , Chang Anna Sze Ni , Wu Alice , Liu Jingyu , Cao Yuxue , Mohammad Yousuf , Popat Amirali , Walsh Laurie , Ye Qingsong , Xu Chun , Kumeria Tushar
Published: October 2023

3D printing of titanium (Ti) metal has potential to transform the field of personalised orthopaedics and dental implants.
Moderate temperature sulfurization and selenization of highly stable metal oxides: an opportunity for chalcogenide perovskites
Authors: Agarwal Shubhanshu , Turnley Jonathan W. , Pradhan Apurva A. , Agrawal Rakesh
Published: October 2023

We report the conversion of BaZrO3 into BaZrS3 at temperatures below 600 °C, enabled by a thermodynamics-guided redesigned of the sulfurization process.
A novel narrow-band blue-emitting phosphor with high efficiency and thermal stability for WLEDs and FEDs
Authors: Zhang Qiang , Ding Xin , Wang Haoyang , Liu Bin , Wang Yuhua
Published: October 2023

In this work, a novel narrow-band blue-emitting phosphor with high efficiency and thermal stability has been designed and prepared.
The expanding boundaries of sphingolipid lysosomal storage diseases; insights from Niemann–Pick disease type C
Authors: Platt Frances M.
Published: October 2023

Lysosomal storage diseases are inborn errors of metabolism that arise due to loss of function mutations in genes encoding lysosomal enzymes, protein co-factors or lysosomal membrane proteins. As a consequence of the genetic defect, lysosomal function is impaired and substrates build up in the lysosome leading to ‘storage’. A sub group of these disorders are the sphingolipidoses in which sphingolipids accumulate in the lysosome. In this review, I will discuss how the study of these rare lysosomal disorders reveals unanticipated links to other rare and common human diseases using Niemann–Pick disease type C as an example.
Multifunctional hydrogels for chronic wounds repairing
Authors: Wang Xiao , Hu Rong , Han Lu , Lu Xiong
Published: October 2023

Because of their tissue‐like mechanical performances, high biocompatibility, and adjustable functionality, hydrogels have become increasingly attractive materials for promoting wound healing. Chronic wounds include burn, diabetic, and infected wounds. Unlike common incision wounds, chronic wounds are more challenging to heal. To meet the clinical needs, multifunctional hydrogels should be fabricated and investigated. To guide future studies on the fabrication of hydrogel‐based chronic wound dressings, a review of advanced multifunctional hydrogels is necessary. Various hydrogels with advanced properties, such as antibacterial, antioxidant, bioadhesive, anti‐inflammatory, and wound healing properties, that can be used for skin burn wounds and diabetic wounds are summarised. Lastly, the prospects of advanced hydrogels for wound healing are elaborated.
Mitigation of Deane and Hamill phenomenon in gallium nitride high‐voltage power supply for electric propulsion system application
Authors: Dong Minghai , Li Hui , Yin Shan , See Kye Yak , Wu Yingzhe , Xin Xiong
Published: October 2023

The step‐up resonant converters are widely adopted to provide high voltage in kV‐level for electric propulsion system due to their high efficiency, low mass, modularisation, and high‐power density. The bipolar Cockcroft‐Walton voltage multiplier (BiCWVM) is a major circuit that steps up the voltage in the resonant converter. However, the diode non‐linearity in BiCWVM can introduce self‐sustained quasi‐periodic oscillations in the voltage and current waveforms, which is commonly known as the Deane and Hamill (DH) phenomenon. The oscillation can lead to higher magnetic loss and control failure, and it is more likely to present in the gallium nitride‐based converter due to the high‐frequency operation. The authors aim to investigate and mitigate the DH phenomenon systematically so that proper mitigation can be implemented. To facilitate the investigation, the circuit before the BiCWVM in the converter is derived and modelled as a voltage source vm and a series inductor Lsy. Also, the reverse recovery process of the diode in the BiCWVM can be represented by a piecewise‐linear (PWL) model, with the simplified circuit and PWL model, the relationship between voltage and current under different operating conditions can be determined with ease. The relationship allows to understand the mechanism of diode reverse recovery in BiCWVM that leads to DH phenomenon. Finally, a hybrid‐/full‐silicon carbide (SiC) design is proposed to mitigate the DH phenomenon, which is verified experimentally for a 300‐kHz, 5‐W, 20‐V/1.5‐kV GaN‐based step‐up resonant converter.
A new approach for harmonic detection based on eliminating oscillatory coupling effects in microgrids
Authors: Ahmadi Mojtaba , Mousavi Mohammad Hossein , Moradi Hassan , Rouzbehi Kumars
Published: October 2023

The primary goal of grid‐connected microgrids is to control the active and reactive power, which is reachable by the inner current control loop in the control structure of power converters. However, when facing unbalanced conditions, the inner current control loop implemented in the dq frame does not function properly. In such conditions, the popular current control loop malfunctions since there is an oscillatory coupling between harmonic components. Therefore, in this study, a new harmonic detector based on decoupled double synchronous reference frame within the current control loop is proposed in which the oscillatory coupling between harmonic components is eliminated, and the overall performance of the power converter control system is significantly improved. The performance of the precisely developed mathematical models is verified by Matlab simulations, and the simulation results confirm the accuracy and proper operation of the proposed strategy.
A novel integrity monitoring method for slowly growing errors in inertial navigation system/global navigation satellite system integrated navigation system
Authors: Yang Shaohua , Zhang Xiaodong , Wang Guanjie , Zhang Rui , Li Zhenwei
Published: October 2023

An integrity monitoring of integrated navigation in the presence of slowly growing errors (SGEs) is proposed. SGEs with gradual growth over time are the worst category of latent failures. Tightly coupled inertial navigation system (INS)/Global Navigation Satellite System integration is presented by taking INS errors, bias and drift of receiver clock, baro‐altitude, pseudo‐range errors and ionospheric errors into consideration. Based on the RTCA performance standards DO‐229 and DO‐384, the simplified multi‐filters solution separation is employed for fault detection and calculation of corresponding outputs. For the fault exclusion part, the authors introduce a post pseudo‐range residual and measurement averaging method that is designed to quickly and effectively address SGEs and large measurement noises. Furthermore, the authors have designed a reconstruction logic for the filters that guarantees the continuity of the civil aviation system by considering the variation of visible satellites and historical information. The simulation results demonstrate that the proposed approach satisfies the performance requirements for civil aviation of En‐route and is able to correctly exclude faults and respond quickly in the presence of different levels of SGEs and measurement noises.
Low complexity beamspace super‐resolution for direction‐of‐arrival estimation via prior information encoding
Authors: Jie Pan
Published: October 2023

Beamspace processing is widely applied in Direction‐of‐Arrival (DOA) estimation thanks to dimensional reduction and super‐resolution characterisations. However, the conventional atomic norm minimisation (ANM) based methods for beamspace DOA estimation are of high computational complexity for large arrays. To deal with this issue, the proposed method focuses on locating the sources in the mainlobe of the beamspace and encodes such prior information into the ANM problem without frequency‐selective constraints. The proposed method approximates the beamspace array manifold in the mainlobe sector with the truncated sector Fourier series. The theoretical analysis shows that such approximation with the properly designed fitting error relaxation on the boundary yields the low dimensional semidefinite programming (SDP) approximate implementation of the proposed ANM method and guarantees the support recovery inside the mainlobe. Furthermore, the low complexity Burer‐Monteiro factorisation based alternating direction method of multipliers method is proposed to solve the SDP problem. The complexity analysis and simulations show that the proposed method results in significant computational complexity reduction and slightly better performance compared with state‐of‐art benchmarks.
The Effect Characteristic of Aloe Vera and Grass Jelly Leaves as Edible Coating of Shallot (Allium Cepa L) During Storage
Authors: Trisnawati Wayan , Adnan  , Nuraini Laela , Astuti  , Arya Nyoman Ngurah
Published: October 2023

Shallot (Allium cepa L.) is a perishable horticultural product. Several techniques, including coating, can be used to extend the shelf life of shallot. Aloe vera and grass jelly leaves are prominent plant-based substances that can be used in coatings and are safe to consume. This study aimed to determine the effect of edible coating using aloe vera and grass jelly leaves on shallots during storage. The study used a randomized block design (RBD) which consisted of 4 treatments: control (without any treatments, K); grass jelly leaves+aloe vera (ingredients 1:1, H); H+ 10% ginger extract (HJ); H+1% CMC (HC). The parameters observed consisted of weight loss, percent damage, hardness, water content, and total soluble solids (TSS). The results demonstrated that the H treatment significantly affected the treatment variables (p<0.05). Treatment H had lower weight loss, percent damage, hardness, and water content than other treatments, while TSS increased during storage. The best treatment was treatment H, which had a 16-week storage period, a weight loss of 55.18%, percent damage of 27.49%, a hardness of 3.54 kg/cm2, a moisture content of 85.67%, and a TSS of 11.21oBrix.
Coupling of Coagulation and Fenton-Like Oxidation for Decolorization of Congo Red Dye in Water
Authors: Parningotan S , Adityosulindro S
Published: October 2023

Azo dyes are widely utilized in a variety of industries, including food, cosmetics, and textiles. Removal of azo dyes from wastewater by the conventional biological process is challenging due to its toxicity. Alternative treatment technology is needed to remove the dye effectively and in a relatively short duration. The processing technology is expected to be able to reduce pollutant materials before they enter water bodies which are a source of agricultural irrigation. In this work, dye removal was studied in some physical and chemical processes, including coagulation (Coag.), Fenton-like oxidation (FLO), and its combination. Synthetic Congo Red (CR) solution was used as a contaminant model of dye wastewater. The assays were performed in a laboratory Jar-Test apparatus with varying FeCl3 coagulant doses (20-30 mg/L), H2O2 doses (42-1,680 mg/L), and coupling mode (Coag.-FLO; FLO-Coag.; FLO/Coag.). The congo red decolorization up to 87% was observed in the coupling of Coag.-FLO process at 24 mg/L FeCl3, 280 mg/L H2O2, pH 8 (Coag.) and pH 3 (FLO). Compared to the removal efficiency of the Coag. (color removal 45%) and FLO (color removal 62%) under selected circumstances. In addition to the higher CR removal, the coupling Coag.-FLO process showed potential cost saving due to less H2O2 dose and partially shift to coagulant.
Evaluation of Fluidized-Bed and Drum Roaster Performance in Roasting of Robusta Green Bean
Authors: Rahayuningtyas Ari , Ardiasnyah Cecep E , Setiyoningrum Fitri , Sagita Daing , Sudaryanto Arie , Furqon Maulana , Nurwidha Fina , Arief Dede Zainal , Hidayat Dadang
Published: October 2023

The roasting process is essential in producing ground coffee as it is where coffee's distinctive aroma and flavour are developed. There are two coffee roasters: drum and fluidized bed roasters, each with benefits and drawbacks. This study aimed to determine the effects of roasting machine type and roasting level on the characteristics of Robusta coffee. The experimental design used was a 2x3 factorial of a Randomized Block Design. The results indicated that the water content, ash content, caffeine content, total phenol content, bulk density, colour, coffee ground aroma, brewing colour, brewing aroma, bitterness, acidity, and sweetness were all affected by roasting level. The interaction between roaster type and roasting level affected the water content, total phenol content, bulk density, colour, ground coffee aroma, brewing aroma, bitterness, and acidity. The analysis of volatile compounds in ground roasted coffee by hot-air and drum roasters at light, medium, and dark levels revealed 40, 20, 18 and, 46, 48, 48 volatile compounds, respectively. As a conclusion it was found that the type of roasting machine and the degree of roasting have a strong influence on different characteristics of coffee powder, including moisture content, ash content, total phenol content, volatile compounds, bulk density, colour, and sensory qualities like aroma, bitterness, acidity, and sweetness. However, they didn't have a significant impact on the caffeine content.
Study on Red and White Sorghum (Sorghum bicolor) Germination Flour: Physicochemical Properties and It’s Correlation
Authors: Kristanti D , Setiaboma W , Iwansyah A C , Pangestu A , Permadi S N , Ningrum A , Puspitaningtyas E L
Published: October 2023

Sorghum is a local commodity that has the potential as an alternative ingredient to replace the use of wheat flour in food products. Food security can be accomplished by replacing wheat with sorghum, which is supported by sustainable agriculture. Germination is one of the economical and environmentally friendly modification techniques, it affects the physicochemical properties of seed flour as well as increase the lightness, water and oil holding capacity (WHC/OHC), swelling, and solubility. The goal of the study is to ascertain how germination affects the physicochemical characteristics of sorghum flour and to use principal component analysis (PCA) and hierarchical clustering analysis (HCA) to assess the link between each parameter and its cluster. The germination had an impact on the moisture content, ash, redness (a*), yellowness (b*), viscosity, final viscosity, holding strength, breakdown, and setback of germinated sorghum, but it also increased lightness (L*) and solubility. In white sorghum germination, WHC, OHC, and swelling capacity were increased; but these did not significantly different in red sorghum germination. The protein, fat, breakdown, redness value (a*), peak viscosity, pasting temperature, and peak time were all positively connected, according to PCA, while OHC and lightness (L*) were negatively correlated.
Determinants of Household Food Security in Tamalate District Makassar City
Authors: Nustari Hastuti , Natsir Mohammad , Mardiyati Sri
Published: October 2023

This study examines the food security dynamics among farmer and non-farmer households in Barombong Village, Tamalate District, Makassar City, focusing on determinants that influence household food security. Employing purposive sampling, 40 respondents were selected, and multiple linear regression alongside quantitative descriptive statistics were utilized for analysis. Results indicate significant disparities in food and non-food expenditures between the two groups. While both had high expenditures on side dishes, cigarettes, and rice, farmer households additionally faced significant costs for education, celebration donations, and fuel oil, compared to non-farmer households’ education, electricity, and fuel expenses. Food expenditure constituted 72% of farmer household budgets, whereas it was 65.26% for non-farmer households. Strikingly, only 10% of farmer households were food-secure, compared to 40% of non-farmer households. Crucially, household food security was notably influenced by income, family size, formal education, and sugar prices. Higher income and educational levels correlated with increased food security, while larger families and elevated sugar prices were linked to diminished food security. This research underscores the paradoxical vulnerability of farmer households in food security issues and stresses the need for targeted agricultural and social interventions in the region.
Analysis of urban expansion and its relationship with climate change in Huancayo 1969-2019
Authors: Chihuan Kiara , Mollehuara Michelle , Quispe Cristhian , Condori Jennifer , Cornejo Jose
Published: October 2023

In recent decades urban expansion has indicated changes in the atmosphere and land. This article aims to analyze the relationship between urban expansion and climate change in the city of Huancayo in the period 1969-2019. Annual meteorological data from SENAMHI, demographic data from INEI for urban and rural population, and satellite images for land use change were used, and the Pearson correlation model was applied. From this, it was obtained that the average temperature suffered an increase of 1.87 °C, and the accumulated annual precipitation remained at constant peaks. In the case of the population, the urban zone presented an increase of 37.12% and in the rural zone a decrease of 50.57%. On the other hand, the change in land use was categorised into 6 classes, resulting in the following growth rates for the urban zone 2% and the agricultural zone 0.2%, in contrast to the forest zone, which showed a decrease of 0.7%. Finally, the analysis shows a strong direct correlation between the variables of mean temperature-urban and agricultural expansion (r= 0.646 and r= 0.278) with a significance of (α= 0.05). Therefore, it is necessary to implement urban planning measures in a context of climate change.
Universities Student’s Participation in The Waste-To-Wealth Program
Authors: Abas Muhamad Azahar , Muniandy Neshalini , Muhamad Nor Amal Najihah , Chindo Sulaiman , Ta Wee Seow
Published: October 2023

The university’s activities significantly impact the surrounding environment. The sustainable development paradigm has emphasised the importance of sustainable waste management practices at all levels of institutions, including implementing Waste-to-Wealth initiatives. This study is conducted to investigate the student’s level of knowledge and participation regarding Waste-to-Wealth initiatives. A convenience sampling method was employed to gather data from 368 students of Universiti Malaysia Kelantan (UMK), which was then analysed using descriptive and inferential analyses. The results showed varying levels of student knowledge based on demographics and that overall, the level of knowledge about Waste-to-Wealth initiatives was good (mean score = 3.83/6). However, most student participation in these initiatives is low (71.7%). This study revealed that their knowledge and demographic background (year of study, education background, income) influences students’ participation in Waste-to-Wealth programs. These findings suggest that more effort is needed to enhance student participation in Waste-to-Wealth initiatives.
Investigations Regarding The Contamination with Emerging Pharmaceutical Pollutants in Representative Rivers and Lakes in Romania
Authors: Ghita Gina , Ilie Mihaela , Tudor Georgeta , Arsene Miruna , Luminarioiu Lucian , Raischi Marius , Petrache Ionut
Published: October 2023

The presence of emerging pharmaceutical pollutants in the aquatic environment is generally related to anthropogenic activities such as domestic, industrial and hospital wastewater discharges and landfills. Special attention should be paid to the contamination of surface waters, as they are partly used for drinking water supply, since they directly collect partly untreated wastewater from wastewater treatment plant. Within this paper, the identification, quantification and distribution of pharmaceutical micropollutants, from different complex environmental matrices, respectively: surface water, sediment and biota in the river basins of Arges-Vedea, Buzau-Ialomita and Dobrogea-Litoral and of the Danube River, were achieved. Also, preliminary investigations were carried out regarding the contamination of lakes with active pharmaceutical ingredients (APIs) the metropolitan area of the municipality of Bucharest. Among the pharmaceutical micropollutants identified in the Arges-Vedea river basin, the most frequently detected was paracetamol with a frequency of 69% and antibiotics with a frequency of 65.52%, in the Dobrogea-Litoral basin paracetamol was detected with a frequency of 74.2% and antibiotics with a frequency of 54.84%, while antibiotics were identified in all surface water samples and paracetamol with a frequency of 80% in the Buzau-Ialomita river basin. Considering the contamination of sediments with pharmaceutical residues, these were identified in all studied areas and in biota samples (fish) up to 18.21 ng/g were detected. The preliminary identification of active pharmaceutical ingredients (APIs) from Lakes Plumbuita, Carol, Morii, Alexandru Ioan Cuza (IOR), Herastrau and Tei indicated the frequent presence of several items, such as paracetamol, tinidazole, carbamazepine, moxifloxacin, clarithromycin, and caffeine.
Microelectrophoresis of Heparin (A Modified Technique-But Unperfected)
Authors: Wilson James W.
Published: October 2023

Apparatus and technique for the microelectrophoresis of heparin on an agarose gel are described in detail. Four brands of commercial gut mucosa heparin were tested. All had a fast component and a slow component, the latter migrating 0.88 (0.86 to 0.91) relative to the fast band. The difference in the rate of migration of the commercial preparations (1.02 to 0.97 relative to the arbitrary standard of 1.0) is probably within the error found when the standard was run against itself (0.96-1.02). No mucopolysaccharide or protein impurities were found. There was no observed difference between the migration pattern of gut heparin and the one brand of lung heparin tested. Future attempts at further separation of the 2 fractions is also discussed.
Hemodilution with Hydroxyethyl Starch During Cardiopulmonary Bypass: Review of a Multi-Institutional Study
Authors: Mishler John Milton , Nicora Robert W. , Yoshitake T. , Oishi K. , Kawasaki T. , Shimizu K.
Published: October 2023

Three colloidal plasma expanders for use during cardiopulmonary bypass were compared in 85 patients treated at four Japanese hospitals. Patients were randomly allocated to receive: Hydroxyethyl Starch (HES) 5 ml/kg, HES 10 ml/kg, gelatin (Haemacel 10 ml/kg), or a mixture of HES 5 ml/kg and low viscosity dextran (LVD) 5 ml/kg, in addition to the usual priming dose of 1000-1500 ml Lactated Ringer's solution, 20 gm/dl mannitol, and heparinized whole blood. These colloidal plasma expanders appeared equivalent in safely replacing whole blood. Following surgery, urine outputs increased slightly, there were transient elevations of SGOT, LDH, and serum bilirubin, and transient decrements in serum alkaline phosphatase, Na, K, and Cl concentrations. Serum protein, one week following surgery was decreased, possibly reflecting persistence of the plasma expanders. There was no increased bleeding or prolongation of clotting times, bleeding times, or prothrombin times, even though platelet counts were low following surgery. Plasma hemoglobin concentrations were greater in patients receiving gelatin as compared with those given HES. Hydroxyethyl Starch (6 gm/dl), a new plasma expander, appears to be efficacious and nontoxic in hemodilution extracorporeal perfusion.

The priming solution employed in the extracorporeal circuit has undergone refinement to limit denaturation of blood and consequent clinical sequelae.5,29,30,40 Initially, heparinized whole blood primed the circuit, but the possibility of incompatible blood administration, transmission of viral hepatitis, and nonhemolytic reactions of a febrile or allergic nature became apparent with the use of homologous blood.10,23 Development and improvement of colloidal and crystalloid solutions for hemodilution, has conserved blood and prevented adverse effects attendant upon blood transfusion.12,19,21,24 The use of hemodilution has allowed prolongation of the perfusion period, expanding the application of open heart surgery.21

The present study compares the efficacy and toxicity of hydroxyethyl starch (HES) and gelatin in 85 patients during open heart surgery.
Writing for Publication
Authors: Vander Veer Joseph B.
Published: October 2023

This Article is Based on Remarks Made by the Author Before a Luncheon Audience at the 13th International Conference of the American Society of Extra-Corporeal Technology, Incorporated, held at the Hilton Hotel, Portland, Oregon, August 1,
1975.
A Technique for Extrapolation of Analyzed Values of Blood pH, pCO2 and pO2 to Hypothermic States
Authors: Riley Jeffrey B. , Snyder James E.
Published: October 2023

It is the purpose of this paper to review the work of other authors on the influence of temperature changes on blood pH, pCO2, and pO2 in vitro. Composite, easy to use diagrams based on these works will be presented here for use by the clinician employing hypothermia in the treatment of his patient. It is not the purpose of this paper to recommend the ideal acid base stat’us that will lead to the best patient care during hypothermia, although this question will be discussed.
Prediction of Rupture by Complete Blood Count in Tubal Ectopic Pregnancies Treated with a Single-Dose Methotrexate Protocol
Authors: Reis Yıldız Akdaş , Akay Arife , Diktaş Elif Gülşah , Özkan Merve , Öztürk Neslihan , Özkan Doğukan , Çakır Betül Tokgöz , Erkaya Salim
Published: October 2023

Objective The availability of reliable and inexpensive markers that can be used to determine the risk of rupture during methotrexate (MTX) treatment in ectopic pregnancies (EPs) is considerable. The aim of the present study is to investigate the role of systemic inflammatory markers such as leukocytes (or white blood cells, WBCs), the neutrophil-to-lymphocyte ratio (NLR), and platelet distribution width (PDW), which are among the parameters of the complete blood count (CBC), in the prediction of rupture of EPs under MTX treatment.

Materials and Methods A total of 161 patients with tubal EP who underwent a single-dose methotrexate (MTX) protocol were retrospectively analyzed, and the control group (n = 83) included patients cured by MTX, while the ruptured group (n = 78) included patients who were operated on for tubal rupture during the MTX treatment. The features of EP, beta-human chorionic gonadotropin (β-hCG) levels, sonographic findings, and CBC-derived markers such as WBC, NLR, and PDW, were investigated by comparing both groups.

Results The NLR was found to be higher in the ruptured group, of 2.92 ± 0.86%, and significantly lower in the control group, of 2.09 ± 0.6%. Similarly, the PDW was higher (51 ± 9%) in the ruptured group, and it was significantly lower a (47 ± 13%) in the control group (p < 0.05). Other CBC parameters were similar in both groups (p > 0.05).

Conclusion Systemic inflammation markers derived from CBC can be easily applied to predict the risk of tubal rupture in Eps, since the CBC is an inexpensive and easy-to-apply test, which is first requested from each patient during hospitalization.
The Effect of Mindfulness-Based Stress Reduction Counseling on Blood Glucose and Perceived Stress in Women with Gestational Diabetes
Authors: Zeinabeh Moslemi Zadeh , Atefeh Ahmadi , Masumeh G. Hazanfar Pour , Tania Dehesh , Mojgan Sanjari , Katayoun Alidousti
Published: October 2023

Objective Gestational diabetes can cause maternal and neonatal morbidity. Psychological factors, especially stress, play a meaningful role in diabetes management. Therefore, the present study aimed to investigate the effect of Mindfulness-Based Stress Reduction counseling on blood sugar and perceived stress in women with gestational diabetes.

Methods The present quasi-experimental interventional study was performed on 78 women with gestational diabetes. In the intervention group, a Mindfulness-Based Stress Reduction counseling program was conducted by the researcher in 8 sessions of 90 minutes twice a week. The Cohen stress questionnaire was filled in both groups. Also, fasting blood sugar and 2-hour blood sugar levels were measured in both groups. Statistical analysis was performed using the independent T-Test, the paired T-Test, the Mann-Whitney and Wilcoxon Tests using IBM SPSS Statistics for Windows version 20 version (IBM Corp., Armonk, NY, USA).

Results The mean age of pregnant women in the intervention group was 28.84 ± 6.20 years old and 29.03 ± 5.42 years old in the control group. There was a significant mean difference between the fasting blood sugar score (p = 0.02; - 6.01; and - 11.46) and the 2-hour fasting blood sugar score (p < 0.001;12.35; and - 5.3) and the perceived stress score (p < 0.001; 35.57; and - 49.19) existed between the intervention and control groups after the intervention.

Conclusion The results of the present study showed that mindfulness-based stress reduction counseling is effective in reducing blood sugar levels and reducing perceived stress in women with gestational diabetes treated with diet.
Comparison of Cavum Septum Pellucidum Size in Euploid and Aneuploid Fetuses
Authors: Agaoglu Merve Ozturk , Agaoglu Zahid , Ozturk Filiz Halici , Celen Sevki , Caglar Turhan
Published: October 2023

Objective The aim of the present study is to compare the cavum septum pellucidi (CSP) z-score in euploid and aneuploid fetuses and to investigate the performance of the CSP width/length and CSP width/biparietal diameter (BPD) ratios as a diagnostic marker in aneuploidy.

Methods A total of 54 patients, 20 aneuploid and 35 euploid fetuses, between 18 and 37 weeks of gestation, were included in this retrospective study. The CSP width z-score was compared between the two groups. Receiver operating characteristic (ROC) curves were calculated for the CSP width/length and CSP width/BPD ratios to predict aneuploidy.

Results The median CSP width was 4.8 mm (range, 1.8 to 8.5 mm) in the euploid group, and 5.4 mm (range 3.1 to 8.4 mm) in the aneuploid group. Cavum septum pellucidi width z-score, CSP width/length ratio, and CSP width/BPD ratio were significantly higher in fetuses with aneuploidy than in fetuses with normal karyotype (p = 0.001; p = 0.013; p = 0.028). In the ROC analysis, the CSP width/length ratio had the optimal cutoff value of 0.59, with 72.0% sensitivity and 58.0% specificity, and for the CSP width/BPD ratio, the cutoff value was 0.081 with 83.0% sensitivity and 61.0% specificity for detection of aneuploidy.

Conclusion CSP width z-score was found to be increased in aneuploid fetuses. The CSP width /BPD ratio can be used as a new marker for predicting aneuploidy.
The dangers and distractions of in-vehicle safety and infotainment enhancements: stakeholders’ views on the role of third parties in ways forward
Authors: Van Felius Margo , Bates Lyndel , Seccombe John
Published: October 2023

Distracted driving is a leading contributor to road crashes. Distractions can be caused by devices integrated within the vehicle itself or mobile phones. There is limited regulation of most distractions, except mobile phones, therefore providing an opportunity for third parties to take an active role in minimising distractions caused by in-vehicle technology and mobile phones. To date, the role of third parties has received limited attention in the road safety literature. This study uses 14 interviews and written responses from road safety experts, enforcement agencies and regulators in Australia and the United Kingdom to discuss the potential role of third parties in reducing distracted driving. The results indicate car manufacturers, car retailers, employers with commercial fleets and sole operators can play a significant role in reducing distracted driving by more clearly regulating in-vehicle technologies, educating consumers and mobile phone use during worktime.
Education big data and learning analytics: a bibliometric analysis
Authors: Samsul Shaza Arissa , Yahaya Noraffandy , Abuhassna Hassan
Published: October 2023

The contemporary era’s extensive use of data, particularly in education, has provided new insights and benefits. This data is called ‘education big data’, and the process of learning through such data is called ‘learning analytics’. Education in big data and learning analytics are two important processes that produce impactful results and understanding. it is crucial to take advantage of these processes to enhance the current education system. We conduct a bibliometric analysis based on the PRISMA statement template. The publications used for the analysis are based on the years 2012–2021. We examine and analyze a total of 250 publications, mainly sourced from the Scopus database, for insights regarding education big data and learning analytics. All of the publications also undergo filtration according to specific inclusion and exclusion criteria. Based on the bibliometric analysis conducted, we discover the distribution of education big data and learning analytics publications across the years 2012–2021, the most relevant journals and authors, the most significant countries, the primary research keywords, and the most important subject area involved. This study presents the trends and recommendations in education big data and learning analytics. We also offer suggestions for improvement and highlight the potential for enhancement of the education system through the full utilization of education big data and learning analytics.