bluuebunny/crossref_metadata_2025 huggingface dataset:
A comparative study of clinicopathological and imaging features of HBV-negative and HBV-positive intrahepatic cholangiocarcinoma patients with different pathologic differentiation degrees
Authors: Huang Xiaoli , Yu Dan , Gu Xintao , Li Jiansun , Chen Jiaqi , Zou Yuanqiang , Liao Jinyuan
Published: November 2023

Hepatitis B is a risk factor for the development of intrahepatic cholangiocarcinoma. The prognosis of HBV-related ICC remains to be further investigated. To investigate the clinical, pathological and imaging features of intrahepatic cholangiocarcinoma of hepatitis B virus-positive and -negative patients. Data from January 31, 2012 to December 31, 2019 of 138 patients were retrospectively analyzed. The patients were divided into hepatitis B virus-positive group (group A[n = 66]) and virus-negative group (group B[n = 72]), and the patients were divided into groups according to pathological differentiation degree and tumor size. The differences in clinical, imaging characteristics and the progression-free survival between groups were analyzed. There were significant differences in gender, age, HBc antibody, CA125 and AFP, tumor distribution site, maximum diameter, plain scan density, inferior hepatic angle, peritumoral bile duct dilatation, vascular encasement invasion, intrahepatic bile duct dilatation and lymphadenopathy between the two groups (P < 0.05); There were statistical differences in signs of vascular encasement invasion between the two groups with well-to-moderately differentiated tumors (P < 0.05); there were statistical differences in tumor density uniformity, signs of vascular encasement invasion and lymphadenopathy between the two groups with poorly differentiated tumors (P < 0.05). Large groups A and B showed differences in tumor density uniformity, vascular encasement invasion, arterial phase, overall reinforcement pattern, peritumoral bile duct stones and biliary dilatation (P < 0.05). There was no statistical difference in postoperative PFS between the two groups (P > 0.05). The clinical and imaging features of ICC of hepatitis B virus-positive and -negative patients are different, and there is little difference in postoperative disease-free survival time.
Chia seeds and coenzyme Q10 alleviate iron overload induced hepatorenal toxicity in mice via iron chelation and oxidative stress modulation
Authors: Sadek Shimaa A. , Marzouk Mohamed , Mohamed Hanan R. H. , El-sallam Bassant F. Abd , Elfiky Abdo A. , Sayed Amany A.
Published: November 2023

Iron overload (IOL) can cause hepatorenal damage due to iron-mediated oxidative and mitochondrial damage. Remarkably, combining a natural iron chelator with an antioxidant can exert greater efficacy than monotherapy. Thus, the present study aimed to evaluate the efficacy of Chia and CoQ10 to chelate excess iron and prevent hepatorenal oxidative damage in IOL mice. Male Swiss albino mice (n = 49) were randomly assigned to seven groups: control, dietary Chia, CoQ10, IOL, IOL + Chia, IOL + CoQ10, and IOL + Chia + CoQ10. Computational chemistry indicates that the phytic acid found in the Chia seeds is stable, reactive, and able to bind to up to three iron ions (both Fe2+ and Fe3+). IOL induced a significant (P < 0.05) increase in serum iron, ferritin, transferrin, TIBC, TSI, RBCs, Hb, MCV, MCH, WBCs, AST, ALT, creatinine, and MDA. IOL causes a significant (P < 0.05) decrease in UIBC, platelets, and antioxidant molecules (GSH, SOD, CAT, and GR). Also, IOL elicits mitochondrial membrane change depolarization, and DNA fragmentation and suppresses mitochondrial DNA copies. Furthermore, substantial changes in hepatic and renal tissue, including hepatocellular necrosis and apoptosis, glomerular degeneration, glomerular basement membrane thickening, and tubular degeneration, were observed in the IOL group. Dietary Chia and CoQ10 induced significant (P < 0.05) amelioration in all the mentioned parameters. They can mostly repair the abnormal architecture of hepatic and renal tissues induced by IOL, as signified by normal sinusoids, normal central veins, and neither glomerular damage nor degenerated tubules. In conclusion, the combined treatment with Chia + CoQ10 exerts more pronounced efficacy than monotherapy in hepatorenal protection via chelating excess iron and improved cellular antioxidant status and hepatorenal mitochondrial function in IOL mice.
Low EGFL7 expression is associated with high lymph node spread and invasion of lymphatic vessels in colorectal cancer
Authors: de Oliveira Cristiane , Martins Sandra Fátima Fernandes , Gonçalves Paola Gyuliane , Limone Gabriel Augusto , Longatto-Filho Adhemar , Reis Rui Manuel , Bidinotto Lucas Tadeu
Published: November 2023

Studies indicate EGFL7 as an important gene in controlling angiogenesis and cancer growth, including in colorectal cancer (CRC). Anti-EGFL7 agents are being explored, yet without promising results. Therefore, the role of EGFL7 in CRC carcinogenesis should be investigated. This study aimed to evaluate the prognostic value of EGFL7 expression in CRC and the signaling pathways influenced by this gene. EGFL7 expression was evaluated through immunohistochemistry in 463 patients diagnosed with CRC and further associated with clinicopathological data, angiogenesis markers and survival. In silico analyzes were performed with colon adenocarcinoma data from The Cancer Genome Atlas. Analysis of enriched gene ontology and pathways were performed using the differentially expressed genes. 77.7% of patients presented low EGFL7 expression, which was associated with higher lymph node spread and invasion of lymphatic vessels, with no impact on survival. Additionally, low EGFL7 expression was associated with high VEGFR2 expression. Finally, we found in silico that EGFL7 expression was associated with cell growth, angiogenesis, and important pathways such as VEGF, Rap-1, MAPK and PI3K/Akt. Expression of EGFL7 in tumor cells may be associated with important pathways that can alter functions related to tumor invasive processes, preventing recurrence and metastatic process.
Changes in sputum microbiota during treatment for nontuberculous mycobacterial pulmonary disease
Authors: Kim Bo-Guen , Yu Jin Young , Kim Su-Young , Kim Dae Hun , Jhun Byung Woo
Published: November 2023

Limited data exist on longitudinal changes in the sputum bacterial microbiome during treatment in nontuberculous mycobacterial pulmonary disease (NTM-PD) patients. We prospectively collected serial sputum samples from 14 NTM-PD patients during treatment, at the start (n = 14) and at 1 (n = 10), 3 (n = 10), 6 (n = 12), and 12 (n = 7) months. The bacterial microbiome changes were analyzed using 16S rRNA sequences (V3–V4 regions). Subgroup analysis included culture conversion (n = 9) and treatment refractory (n = 5) groups. In all patients, sputum alpha-diversity (ACE, Chao1, and Jackknife) significantly decreased during antibiotic treatment at 1, 3, 6, and 12 months compared to treatment initiation levels. Within the culture conversion group, genus/species-level beta-diversity showed differences at 1, 3, 6, and 12 months compared to treatment initiation (all p < 0.05). However, in the refractory group, there were no differences in beta-diversity at the genus/species levels in the sputum at any time point. In the linear discriminant analysis (LDA) effect sizes (LEfSe) analysis, the culture conversion group exhibited decreasing taxa at various levels (phylum/genus/species), but no significant increase in taxa was observed. LEfSe analysis of the refractory patient group revealed multiple taxa decreased during treatment. However, proportions of Veillonella dispar (LDA = 4.78), Fusobacterium periodonticum (LDA = 4.35), and Pseudomonas aeruginosa (LDA = 2.92) increased as the treatment period progressed in the refractory group. Sputum microbiota diversity decreases during NTM-PD treatment. In the culture conversion group, most taxa decrease, while some increase in the refractory group. These findings suggest that a distinct respiratory microbial community may exist in refractory NTM-PD patients compared to responsive antibiotic-treated patients.
Polymerization and Synthesis from Biobased Feedstocks
Authors: Forrester Michael J. , Lin Fang-Yi , Cochran Eric W.
Published: November 2023

There are a wide variety of methods for producing polymers derived from biological sources. As will be discussed in other chapters 8 and 9, it is possible to use natural polymers such as polysaccharides and proteins to produce biobased plastics directly. However, it is also possible to convert many types of biomass into monomers for polymerization into novel biopolymers. These materials may have unique properties that can make them preferred over their petrochemical analogues and as such are often referred to as “bioadvantaged polymers”. This chapter will review a select number of polymerization methods, their governing mechanisms, and basic theory for producing biobased plastics. In detail, step-growth polymerization, ionic polymerization, metathesis polymerization, and radical polymerization will be reviewed. In addition, some of the common challenges associated with these polymerization methods that arise from feedstocks that have a high degree of functionality, typical for biobased materials (plants based oils, proteins, and polysaccharides), will also be reviewed. These challenges can lead to low molecular weight polymers and/or broad molecular weight distributions. Thus, this chapter will review possible solutions to the challenges posed by the various polymerization methods.
Protein-based Plastics
Authors: Grewell D. , Schrader J. , Srinivasan G.
Published: November 2023

Protein-based plastics were developed and tested in the early 20th century by industrialists such as Henry Ford and George Washington Carver but never reached commercialization because of the advent of petrochemical feedstocks. Today, the demand for bio-renewable and biodegradable materials has led to the development and characterization of novel materials, many of which are now on the market, including polyesters (polylactic acid and polyglycolic acid) and starch-based plastics that have not reached product maturity. Other bioplastics, such as polyethylene derived from starch-based biomass or sugars, are not biodegradable but offer properties comparable to those of commercial petrochemical plastics. The polyethylene terephthalate (PET) bottles produced by Coca-Cola contain 30% bio-based materials and are predicted to be 100% bio-based in the future. Protein-based plastics offer characteristics that make them strong candidates as ecofriendly solutions for specific applications, and they are especially attractive for situations where the proteins can provide added functions when compared to other polymers.
Optical sensors (optodes) for multiparameter chemical imaging: classification, challenges, and prospects
Authors: Kalinichev Andrey V. , Zieger Silvia E. , Koren Klaus
Published: November 2023

Seeing is believing - and optical sensors (optodes) are ideal tools to make chemistry visible in real time. Find out how technological and chemical advances enable multiparameter imaging of complex samples.
A homogeneous label-free electrochemical aptasensor based on an omega-like DNA nanostructure for progesterone detection
Authors: Wang Zaofen , Shi Weiping , Tan Yunzhu , Liu Bingqian
Published: November 2023

A novel homogeneous label-free electrochemical aptamer sensor for the detection of progesterone was prepared by combining the omega-like DNA nanostructure, with an isothermal cycling amplification strategy based on the exonuclease III.
A solid phase extraction column based on SiO2@ZIF-8 for efficient analysis of domoic acid toxins in the seawater environment: experiments and DFT calculations on adsorption behaviour
Authors: Xu Jin-Hua , Wu Ya-ping , Xie Shi-Ye , Chen Hui , Ding Qing-Qing , Zhang Wen-Min , Zhang Lan
Published: November 2023

Effective extraction of domoic acid from seawater based on a SiO2@ZIF-8 column: experiments and DFT calculations on adsorption behavior.
Emerging 4D fabrication of next-generation nerve guiding conduits: a critical perspective
Authors: Joshi Akshat , Choudhury Saswat , Asthana Sonal , Homer-Vanniasinkam Shervanthi , Nambiar Uma , Chatterjee Kaushik
Published: November 2023

The latest advancements in 4D fabrication of state-of-the-art nerve conduits are critically discussed. Such advancements can overcome various drawbacks of traditional approaches including the need for suturing and tedious fabrication processes, among others.
Synthesis and applications of porphyrin-based MOFs in removal of pesticide from wastewater: molecular simulations and experimental studies
Authors: Ayman.FM Fatma , Taha Mohamed , Farghali Ahmed A. , Abdelhameed Reda M.
Published: November 2023

The Fe-TCPP has higher maximum adsorption capacity compared to Zn-TCPP and Cu-TCPP. The mechanism of adsorption was investigated using Monte Carlo simulations. The methomyl molecule is shaded in a lemon color in the network of Fe-TCPP.
Improving the performance of ASA in the DAC of 2,5-DMF and ethylene
Authors: Coumans Ferdy J. A. G. , Bolshakov Aleksei , van de Poll Rim C. J. , Anastasiadou Dimitra , Mezari Brahim , Hensen Emiel J. M.
Published: November 2023

A variety of methods are employed to synthesize amorphous silica–alumina (ASA) to resolve the role of Al speciation and surface area in the catalytic performance in the Diels–Alder cycloaddition reaction of 2,5-dimethylfuran and ethylene to p-xylene.
Photocatalytic reduction of nitrobenzene to aniline over CdS nanorods: the impacts of reaction conditions and the hydrogenation mechanism
Authors: Fu Xianliang , Qi Zhulin , Ren Wei , Xu Man , Yang Yang
Published: November 2023

The effects of the reaction conditions and the hydrogenation mechanism of nitrobenzene over noble metal modified CdS nanorods were investigated to enrich the deep understanding of the photocatalytic reduction of nitroaromatics to anilines.
Mechanistic insights into the effect of halide anions on electroreduction pathways of CO2 to C1 product at Cu/H2O electrochemical interfaces
Authors: Ou Lihui , You Wanli , Jin Junling
Published: November 2023

The presence of halide anions on Cu electrodes can alter the activity, mechanisms and product selectivity of CO2 electroreduction.
1,3-C–H bond activation on a transient gallium(i)/isocyanate adduct
Authors: Puthiyaveetil Sruthi S. , Kassymbek Aishabibi , Dmitrienko Anton , Pilkington Melanie , Nikonov Georgii I.
Published: November 2023

Addition of isocyanate of the Ga(i) compound 1 generates a transient zwitterionic intermediate 5 amenable to C–H bond activation of pyridine oxide, DMSO, and carboxamide.
Ergothioneine suppresses hepatic stellate cell activation via promoting Foxa3-dependent potentiation of the Hint1/Smad7 cascade and improves CCl4-induced liver fibrosis in mice
Authors: Shu Guangwen , Lei Xiao , Li Guangqiong , Zhang Tiantian , Wang Chuo , Song Anning , Yu Huifan , Wang Xiaoming , Deng Xukun
Published: November 2023

EGT is a bioactive compound derived from certain edible mushrooms. Here, we showed that EGT inhibits HSC activation and improves CCl4-induced mouse liver fibrosis by promoting nuclear translocation of Foxa3 in HSCs to potentiate the Hint1/Smad7 axis.
Field-induced magnetic relaxation in heteropolynuclear LnIII/ZnII metal organic frameworks: cerium and dysprosium cases
Authors: López Agustín , Cruz Carlos , Paredes-García Verónica , Veiga Nicolás , Lloret Francesc , Torres Julia , Chiozzone Raúl
Published: November 2023

The MOF [Ce2Zn3(oda)6(H2O)6]·12H2O displays field-induced slow magnetic relaxation and phonon-bottleneck effect. Ab initio calculations reveal strong mixing of spin–orbit levels in the CeIII ground state and significant tunneling probability.
Reactivity of oxidants towards phenyl and benzyl substituted 5-selanylpentanoic acids: radiolytic and theoretical insights
Authors: Singh Beena G. , Prasanthkumar Kavanal P. , Mangiavacchi Francesca , Marini Francesca , Santi Claudio
Published: November 2023

Two selanyl compounds, 5-(phenylselanyl)pentanoic acid (1) and 5-(benzylselanyl)pentanoic acid (2), were investigated for their reactivity towards one-electron oxidants. Compound 2 was found to possess better antioxidant properties than compound 1.
A molecular chemodosimeter to probe “closed shell” ions in kidney cells
Authors: Assel Amine , Stanley Meagan M. , Mia Rashid , Boulila Besma , Cragg Peter J. , Owolabie Iyanuoluwani , Hetrick Meredith , Flynt Alex , Wallace Karl J. , Ben Jannet Hichem
Published: November 2023

Two chemodosimeters have been synthesized to detect closed-shell metal ions (Zn2+ and Cd2+) in HEK 293 cells.
Evaluating impacts of bambusuril pocket size and sterics on anion binding trends using ChemFET sensors
Authors: Banning Douglas H. , Kuhl Grace M. , Howell Madeline M. , Johnson Darren W.
Published: November 2023

Slight changes in steric bulk of bambusurils results in orders of magnitude differences in aqueous anion detection limits of ChemFET sensors.
Enhanced electrocatalytic oxygen redox reactions of iron oxide nanorod films by combining oxygen vacancy formation and cobalt doping
Authors: Omar ben Gubaer Saleh , Shaddad Maged N. , Arunachalam Prabhakarn , Amer Mabrook S. , Aladeemy Saba A. , Al-Mayouf Abdullah M.
Published: November 2023

In this present paper, a series of defect-rich iron oxy/hydroxide nanorod arrays: α-FeOOH, Fe2O3, FeOx NRs, and Co-FeOx thin film catalysts were synthesized via a hydrothermal approach followed by thermal and vacuum treatments.
Reductive coupling of nitro compounds with boronic acid derivatives: an overview
Authors: Behmagham Farnaz , Abdullah Media Noori , Azimi Seyedeh Bahareh , Ubaid Mohammed , Ali Abbas Talib Abd , Adhab Ayat Hussein , Sami Mustafa Humam , Soleimani-Amiri Somayeh , Vessally Esmail
Published: November 2023

The purpose of this review is to summarize the current literature on reductive C–N coupling of nitro compounds and boronic acids, with special emphasis on the mechanistic features of the reactions.
Development of an automated Raman system and use of principal component analysis to classify real and counterfeit liquors
Authors: Chi Huan-Wen , Hu Shu-Wei , Lin Ding-Zheng
Published: November 2023

LabVIEW-based automated Raman system detects low-concentration (methanol <50 g L−1) counterfeit liquors, classifies liquor brands, enhancing quality control and counterfeit detection in the industry.
Flat and roll-type translucent anodic porous alumina molds anodized in oxalic acid for UV nanoimprint lithography
Authors: Yanagishita Takashi , Kumagai Naoko , Masuda Hideki
Published: November 2023

Transparent anodic porous alumina mold for photo-nanoimprinting.
Suppression of the redox reaction between the IGZO surface and the reducing agent TMA using fluorine oxidizing agent treatment
Authors: Jang Yuseong , Lee Jinkyu , Mok Jinsung , Park Junhyeong , Shin Seung Yoon , Lee Soo-Yeon
Published: November 2023

This study proposes that the post-deposition oxidation of the IGZO surface is essential to counteract the oxygen-scavenging behavior of TMA, a common Al precursor for ALD-Al2O3.
Dipole–dipole correlations in the nematic phases of symmetric cyanobiphenyl dimers and their binary mixtures with 5CB
Authors: Zavvou Evangelia E. , Ramou Efthymia , Ahmed Ziauddin , Welch Chris , Mehl Georg H. , Vanakaras Alexandros G. , Karahaliou Panagiota K.
Published: November 2023

Disentangling the relative contribution of the intra- and inter-molecular dipolar associations on the static dielectric properties of liquid crystalline dimer–monomer mixtures.
A functional electrolyte containing propyl 4-methylbenzene sulfonate (PMBS) additive to improve the cycling performance of the LiNi0.8Co0.1Mn0.1O2/graphite full cell under the low temperature of −10 °C
Authors: Li Haijia , Cai Jian , Liao Jianping , Li Yiting , Zeng Xueyi , He Xin , Fan Weizhen , Fan Chaojun , Ma Zhen , Nan Junmin
Published: November 2023

A functional electrolyte containing propyl 4-methylbenzenesulfonate (PMBS) additive is developed to improve the performance of the LiNi0.8Co0.1Mn0.1O2 (NCM811)/graphite pouch full cells, especially the cycling lifetime under low temperature.
Coke relocation and Mo immobilization in donut-shaped Mo/HZSM-5 catalysts for methane dehydroaromatization
Authors: Cheng Ming , Cruchade Hugo , Pinard Ludovic , Dib Eddy , Liu Honghai , Wang Jiujiang , Liu Xinmei , Yan Zi-Feng , Qin Zhengxing , Mintova Svetlana
Published: November 2023

Molybdenum-modified HZSM-5 catalysts are widely used for methane dehydroaromatization (MDA) but suffer from rapid deactivation due to coke formation.
Correction: Hydrothermal synthesis of α-MnO2 and β-MnO2 nanorods as high capacity cathode materials for sodium ion batteries
Authors: Su Dawei , Ahn Hyo-Jun , Wang Guoxiu
Published: November 2023

Correction for ‘Hydrothermal synthesis of α-MnO2 and β-MnO2 nanorods as high capacity cathode materials for sodium ion batteries’ by Dawei Su, et al., J. Mater. Chem. A, 2013, 1, 4845–4850, https://doi.org/10.1039/C3TA00031A.
The Curie temperature: a key playmaker in self-regulated temperature hyperthermia
Authors: Niraula Gopal , Wu Chengwei , Yu Xiaogang , Malik Sonia , Verma Dalip Singh , Yang Rengpeng , Zhao Boxiong , Ding Shuaiwen , Zhang Wei , Sharma Surender Kumar
Published: November 2023

Self-regulated Curie temperature (TC) and their physical/biochemical behavior for MIH. (a) Represents how it works controlling the temperature inside the body, (b) its dependency and cytotoxicity on various physical and biological factors.
A biomimetic phototherapeutic nanoagent based on bacterial double-layered membrane vesicles for comprehensive treatment of oral squamous cell carcinoma
Authors: Chen Qian , Shan Tianhe , Liang Yanjie , Xu Yujing , Shi Enyu , Wang Yue , Li Changyi , Wang Yinsong , Cao Mingxin
Published: November 2023

Bacterial double-layered membrane vesicles were used as an immune adjuvant to develop a biomimetic phototherapeutic nanoagent, which could exert synergistic effects of PTT/PDT and immune stimulation for OSCC comprehensive treatment.
Dual functional quaternary chitosans with thermoresponsive behavior: structure–activity relationships in antibacterial activity and biocompatibility
Authors: Borandeh Sedigheh , Laurén Isabella , Teotia Arun , Niskanen Jukka , Seppälä Jukka
Published: November 2023

Cationically modified chitosan derivatives exhibit a range of appealing characteristics, with a particular emphasis on their antimicrobial potential across a broad spectrum of biomedical applications.
Antibacterial, antioxidant and injectable hydrogels constructed using CuS and curcumin co-loaded micelles for NIR-enhanced infected wound healing
Authors: Jia Pengpeng , Zou Yu , Jiang Jiang
Published: November 2023

A CuS–curcumin hybrid hydrogel with good biocompatibility, NIR-enhanced antibacterial, antioxidant, anti-inflammatory, and angiogenesis properties has been developed for infected wound healing.
Engineering CRISPR guide RNAs for programmable RNA sensors
Authors: Liu Yang , Liu Wei , Wang Baojun
Published: November 2023

As the most valuable feature of the CRISPR system, the programmability based on Watson–Crick base pairing has been widely exploited in engineering RNA sensors. The base pairing in these systems offers a connection between the RNA of interest and the CRISPR effector, providing a highly specific mechanism for RNA detection both in vivo and in vitro. In the last decade, despite the many successful RNA sensing approaches developed during the era of CRISPR explosion, a deeper understanding of the characteristics of CRISPR systems and the continuous expansion of the CRISPR family members indicates that the CRISPR-based RNA sensor remains a promising area from which a variety of new functions and applications can be engineered. Here, we present a systematic overview of the various strategies of engineering CRISPR gRNA for programmable RNA detection with an aim to clarify the role of gRNA's programmability among the present limitations and future development of CRISPR-enabled RNA sensors.
FSSDD: Few‐shot steel defect detection based on multi‐scale semantic enhancement representation and mask category information mapping
Authors: Liu Zhoufeng , Guo Zijing , Li Chunlei , Huang Ning , Gao Chengli
Published: November 2023

Steel defect detection is important for industry production as it is tied to the product quality and production efficiency. However, previous steel defect detection methods based on deep convolutional neural networks heavily rely on large‐scale data for training and tend to have poor generalization ability for a novel defect category. In this paper, a novel few‐shot steel defect detection model based on multi‐scale semantic enhancement representation and mask category information mapping is introduced, where only a few annotated samples are acquired for the novel defect category. More concretely, three main components are built: an information‐guidance enhanced multi‐head detector is proposed to improve the representation of information in meta‐feature maps, a mask category representation module is designed to enhance the category feature representation of the mask region in the support set, and a novel multi‐scale category edge loss function is designed to assist the generation of category reweighting vector. Extensive experiments on the North‐east University few‐shot steel defect data set demonstrate that the proposed method significantly outperforms the state‐of‐the‐art methods and verify its effectiveness through ablation studies.
Optimal combined wake and active power control of large‐scale wind farm considering available power
Authors: Chen Weimin , Wang Pengda , Huang Sheng , Huang Lingxiang , Tang Wenbo , Wu Qiuwei
Published: November 2023

The high‐order nonlinear complex characteristics of traditional static wake model (SWM) restrict the fast optimization of wake effect. Therefore, this paper introduces a dynamic wake model (DWM) to describe the time‐varying wake characteristics of wind turbines (WTs) with low computational cost. The traditional SWM is linearized to derive the wake wind speed sensitivity coefficients, which represents the sensitivity of wake wind speed deficit with respect to the active power reference. Considering the natural propagation characteristics of wake effect, a wake delay function is added to realize the future wind speed prediction of different locations of the wind farm. And a joint control strategy of wake and active power based on model predictive control (MPC) is proposed to optimize the power contribution of each WT to minimize wake effects, and maximize total available power. Thus, the increased available power is able to satisfy the power demand from Transmission System Operator (TSO) for ancillary services and enhance power support capability. The control performance of the proposed control strategy is evaluated by simulations under constant and varying incoming wind speed.
Equivalent transmission line characterization and multi‐layer material measurement analysis of the signal conversion process in the pulsed electro‐acoustic method
Authors: Ren Hanwen , Zhao Siyang , Mu Jian , Gao Haoyu , Qi Tianrun , Han Zhiyun , Li Zhihui , Li Qingmin
Published: November 2023

This paper studies the equivalent transmission line model of the pulsed electro‐acoustic (PEA) method with its applications. Based on the consistency of acoustic wave behaviour inside lossy acoustic materials and voltage wave propagation in transmission line, an equivalent simulation model of the PEA system is developed, whose reliability is verified by the output from the transducer and amplifier models and the comparison with measured waveforms. For the problem of acoustic impedance mismatch between different modules, simulation indicates that the unequal impedances of semiconducting electrode and sample can affect the amplitude of the measured signal at the upper electrode side, and the reflected acoustic waves caused by the transducer can affect the charge waveform. Further simulation for multi‐layer materials finds that the reflected acoustic waves of different samples and sound absorbing module can superimpose on the charge signal. Accordingly, a selection criterion is proposed to avoid the effect of the reflected waves at the interface. As for the acoustic reflection caused by internal charge, it needs to be dealt with sequentially in calibration process, starting from the result inside the sample near ground electrode. The research can provide a foundation for analyzing the acoustic properties of the PEA method.
Environment-friendly floating net cage culture research in Indonesia
Authors: Pujiyani Astuti Lismining , Warsa Andri , Wahju Hendro Tjahjo Didik , Sembiring Tarzan
Published: November 2023

Reservoirs and lakes are widely used for fisheries, both capture fisheries and aquaculture. Aquaculture fisheries that develop in reservoirs or lakes include floating net cages culture (FCC) and pen culture. Besides impacting the economy and employment opportunities, aquaculture activities through FCC can decrease water quality from uneaten feed and fish metabolism residue. For this reason, an environmentally friendly FCC is needed to reduce aquaculture waste. This paper reviews the development of ecologically friendly FCC research in Indonesia. Several studies on environmentally friendly FCC include double net FCC, bio-cages, carpel FCC, windowed, and triple layer FCC. Double net FCC still allows the remaining uneaten feed and feces to settle. Bio-cage research is in the innovation model stage and has no prototype or laboratory tests. Windowed FCC, made with a closed system and a few gaps for circulation, can accommodate aquaculture waste and not spread into the waters, but fish grow slower than other FCC. The loop bio-phytoremediation of FCC or Smart FCC has three layers that can accommodate waste, and the waste will be used for plants that function as filters and phytoremediators of waste. Smart FCC is an aquaponic system modified to be applied in reservoirs/lakes.
Feeding combination of live and fresh silkworms (Tubifex sp.) for the growth performance and survival rate of larvae of baung (Hemibagrus nemurus)
Authors: Sunarno Mas Tri Djoko , Samsudin Reza , Sumartina Bela , Syamsunarno Mas Bayu , Sutisna Ena , Pratama Indra
Published: November 2023

Economically important riverine fish species of baung (Hemibagrus nemurus) have been controllable spawned in a hatchery. The larvae rearing relies on expensive live feed of Artemia sp. Therefore, the experiment aimed to evaluate various feeding combinations of the live and fresh silk worms (Tubifex sp) in the rearing of the larvae of baung. The treatments were various combinations of live and fresh silkworms at 0%:100%, 25%:75%, 50 %:50%, 75%:25%, and 100%:0%. The seven-day-old larvae of baung of 0.0079 ± 0.019 g in weight and 8.96 ± 0.48 mm in length were randomly stocked into 15 plastic tanks of 40x25x17 cm in dimension size at a density of 160 larvae per tank and fed on a diet according to the treatment at 10%. of biomass per day for 21 days of the rearing period. The results showed that feeding silkworms in terms of live and fresh affected significantly the growth performance and survival of the larvae (P<0.05). The feeding combination at 75-100 % live and 25% fresh silk worms resulted in a high growth performance and survival of the baung larvae.
Anatomical respiratory organ of Solen sp
Authors: Ari Wahyuni Eva , Qomaria Nur , Lisdiana Lisa
Published: November 2023

Respiratory organs are important to investigate in Solen sp. due to the fact that literacy is hard to find beside unclear data information. Excellent knowledge of the respiratory organs in biota has become one of the impact factors for knowing its potential in adaptability and ecology. This study aimed to describe the anatomical respiratory organ by analyzing Solen sp. in the Madura Strait, which applied morphological and histological analysis at the Laboratory of Molecular Biology at the State University of Surabaya. The environmental parameters (temperature, pH, salinity, and substrate) and sample of Solen sp. was measured and collected around the Modung district, Bangkalan regency during July – August, 2023. The results showed conditions are within the range of environmental parameters and are reasonable and appropriate for the environment. The shape and structure of the respiratory organs Solen sp. described the shape of the folds with a fresh red color, as are generally of the normal and health gills. The relationship between environmental parameters and anatomical organ of Solen sp. should be concerning for the future research to protect Solen sp. from the overfishing.
The assessment of demersal fish community structure in Kuala Langsa estuary, Langsa City
Authors: Isma Muhammad Fauzan , Isma Faiz , Hatta Muhammad , Mustika Fitria , Syahrial Syahrial , Akla Cut M.N. , Samad Agus Putra Abdul
Published: November 2023

The research was conducted from May to July 2022 in six zones to determine the diversity, niche width, distribution, and community structure of demersal fish. Fish were surveyed using a drift gillnet at a maximum depth of 15 m, identified, and analyzed using clusters and nMDS to determine their grouping. SIMPER analysis was used to discover individual variations between zones and depth strata, while ANOVA was used to determine the significance of individual fish observed. The results of the study found 8 species, 8 genera, and 8 families with Eubleekeria splendens as well as Chelonodon patoca having the highest niche widths (04.42 dan 04.33), then E. splendens, Terapon jarbua, Scatophagus argus, Plotosus canius, C. Patoca, and Johnius carouna were relatively abundant (frequency > 80%). Aside from that, J. carouna is the fish with the most individuals discovered (82 ind and 32.54%). Cluster analysis and nMDS are divided into two groups, with J. carouna being the differentiator between fish groupings based on zonation and C. chanos, C. patoca, and J. carouna being the differentiator between fish groupings based on depth strata. Furthermore, the ANOVA test reveals that individual demersal fish between zones have a significance of < 0.05, whereas individual demersal fish between depth strata have a significance of > 0.05.
Horizontal distribution of chlorophyll-a and water quality on Delta Wulan Estuary, Demak Regency, Central Java, Indonesia
Authors: Widianingsih Widianingsih , Hartati Retno , Endrawati Hadi
Published: November 2023

The overflow of water from the Wulan River has an impact on the amount of nutrients and pollutants that enter the Delta Wulan Estuary. Abundant nutrient content greatly affects the level of primary productivity, especially chlorophyll-a content. The study aimed to determine the horizontal distribution of chlorophyll-a and water quality in the Delta Wulan estuary waters. Sampling was carried out in June 2023 at 12 stations on Delta Wulan Estuary. Demak Regency. Based on the analysis results, the highest chlorophyll-a content was found at station 12 (10.59 - 12.20 mg/l). The nitrate content was found at station twelve (9.2 - 10.0 mg/l), and the highest value of phosphate content was found at stations 10 and 12, with a range of 0.22 - 0.25 mg/l. The range of sea surface temperatures ranges from 29.3–33.2°C. The salinity content value has ranged from 30.0 – 32.0 ppt. It can be concluded that water quality data can support the content of chlorophyll-a in the waters of the Wulan Delta Estuary.
The potential of biomass and carbon storage of avicennia alba in the mangrove rehabilitation area of Kedaburapat village, Kepulauan Meranti district
Authors: Efriyeldi Efriyeldi , Mulyadi Aras , Samiaji Joko
Published: November 2023

This research was conducted from May – August 2023 in the rehabilitation mangrove area of Kedaburapat Village, Rangsang Pesisir Sub-District, Kepulauan Meranti Regency, Riau Province. This study aims to determine the average of tree diameter, potential biomass and carbon storage of each tree and the relationship between potential biomass and carbon storage with the diameter of the Avicennia alba rehabilitation mangrove trees in Kedaburapat Village. The method used in this study is a survey method and determination of sampling points by purposive sampling. The potential biomass and carbon storage of each tree were calculated using the allometric method. The relationship between average tree diameter and potential biomass and carbon storage was analyzed using simple linear regression. The average diameter at breast height (DBH) of A. alba per tree ranged from 2.81 – 4.03 cm, the average biomass per tree was 7.39 – 12.80 kg, the average carbon storage per tree was 3.47 – 5.00 kg C and tree carbon total per ha was 32.62 – 43.95 ton C/ha. The potential of biomass and carbon storage of each tree has a relatively strong positive relationship with the average tree diameter, with a correlation coefficient (r) of 0.9921. The quality of the waters measured in this study were temperatures ranging from 28-30°C, salinity 25-28‰, and pH 7.5-7.9. Environmental parameters indicate that the condition of the rehabilitation mangrove area in Kedaburapat Village is still good and can support the life of mangrove vegetation.
Identification of land suitability as the basis for cultivation of octopus cyanea in Lombok waters
Authors: Mulyani Laily Fitriani , Arfiati Diana , Ekawati Arning Wilujeng , Widodo Maheno Sri
Published: November 2023

Octopus has an important ecological role as both a predator and prey and is classified as an important economic fishery commodity because it contains high enough nutrition. Octopus is germplasm which is Indonesia’s wealth of biological resources. The existence of this octopus needs to be maintained in these waters so that its sustainability is maintained. Therefore, it is necessary to manage octopus cultivation considering the importance of octopus economic and ecological functions. Geographic information system is one method that can be used in this research. This method can be used to make it easier to find out the location of its distribution, so that the development of octopus cultivation activities can be achieved optimally. The purpose of this study was to analyze the prospects for octopus cultivation using GIS applications presented in the form of supply maps for octopus cultivation in the Lombok waters. This research was conducted in June July 2023 and the determination of sampling locations was carried out using purposive sampling based on consideration of problems with environmental conditions at the observation station, covering the Lembar area, Beraringan Beach, Ketapang Beach, Sari Gong Beach and Poto Tano. The results obtained are: temperature 25,25 – 38,130C, brightness 20 - 25 m, current speed 0,2 – 0,8 m/s, depth 20 - 25 m, rainfall 65 - 364 mm, protection: protected, sufficient protected and unprotected, pH 5,7 – 8,4 salinity 33 – 37 ppt, DO 6,19 – 6,52 mg/l, substrate: sandy coral, coral fracture and rocky coral, chlorophyll a 0,26-1,38 mg /m3, and the number of octopuses 100 250 individuals. Locations according to land for very suitable category in Poto Tano and Ketapang Beach; the appropriate category in Lembar; unsuitable category in Beraringan Beach and Sari Gong Beach.
Microplastic and heavy metal interactions (adsorption and desorption) at different salinities
Authors: Susanto Barus Beta , Ida Sunaryo Purwiyanto Anna , Suteja Yulianto
Published: November 2023

Heavy metals and microplastics (MPs) are two pollutants that are currently gaining a lot of attention, and it has been observed that they can interact. The objective of this research was to observe the adsorption and desorption of heavy metals concerning various types of MP particles, different heavy metals and concentrations, and salinity. The findings demonstrate that among all particle types, PP particles absorb heavy metals at the highest rate. Contrarily, PP particles release lower heavy metals and more slowly than other particles. Pb consistently absorbed more metal by MPs than Cu, Zn, or Cd. Cd had the highest rate of heavy metal desorption, followed by Pb, Cu, and Zn. The adsorption capacity of MPs particles increases together with the concentration of heavy metals, whereas the adsorption rate decreases. Salinity has an enormous impact on how MPs and heavy metals interact. The adsorption and desorption of heavy metal in MPs particles decreases and takes longer to reach equilibrium at increased salinities. Between the three different salinities, even the adsorption and desorption results demonstrate a significant difference (p<0.05). Finally, our results indicate that MPs particles have the potency as a vector for heavy metal in freshwater, brackish water, and ocean.
Preliminary Study on the Duration of High-Frequency Seismic Waves in Northern Taiwan from Deep Regional Earthquakes
Authors: Haridhi Haekal A. , Huang Bor Shouh , Faizi Muhammad , Ramadhan Putri , Harahap Ridrya A.A. , Ismanto Nurhadi , Sianipar Dimas
Published: November 2023

The high-frequency seismic waves are usually generated by shallow earthquakes and is observed at a location near the earthquake source. Seismic energy tends to attenuate as it propagates through the Earth’s surface and interior; however, this is not the case at the subduction zone. A regional earthquake that occurred within the subducting slab was observed to have high-frequency energy, although it is from the deep (i.e. > 100 km) and with moderate magnitude (i.e. Mw 5). This phenomenon resulted from the slab effect on focusing the earthquake signal or known as the guided wave. Taiwan has a complicated tectonic feature, where Taipei city, its capital, sits above the oblique subduction of Philippine Sea Plate (PSP), i.e. the southern Ryukyu subduction zone, enhancing its exposure to strong shaking resulting from the deep regional earthquakes. In this study, we use six regional earthquakes at the southern Ryukyu subduction zone recorded by the Formosa Array (FM Array). The FM Array is a dense seismic network with a total of 140 stations located in the northern part of Taiwan, with the distance between stations approximately 5 kilometers. With high-resolution data, we could identify the distribution of the guided wave phenomenon through body wave dispersion of deep regional earthquake signals, where only stations above 10 – 20 km from the plate interface showed dispersion. An Hp/Lp ratio with a 5-second moving window is applied to the dispersed signal. The results indicate that the high-frequency signal has a longer duration at stations that sit 10 to 20 km above the plate interface. This study suggests that the slab effect will produce an anomalous seismic intensity at the subduction region and should be considered in the Ground Motion Prediction Equation (GMPE) so that the damaged to buildings resulting from strong shaking could be reduced.
Microzonation of the seismically active region along the Seulimum fault
Authors: Syarani Zihan Ireuneu , Muksin Umar , Asra Nadiatul , Agussabti Agussabti , Dirhamsyah Muhammad
Published: November 2023

Banda Aceh and Aceh Besar regency is located between the two active faults, the Seulimeum and Aceh segments. In the near future, a large infrastructure development will be constructed in an area closed to the Seulimum fault. One of the development areas is the Campus II of Universitas Syiah Kuala. To prevent possible damage of infrastructure by a devastating earthquake, the developer needs to consider soil and rock types where the building is located. A region characterized by soft soil can lead to seismic amplification which can cause the damage of buildings and infrastructure. The objective of the research is to investigate the types of soil and rocks, called microzonation, in a seismically active region closed to the Seulimum fault. The types of rocks or soils can be classified based on the values of shear wave velocity (Vs) derived from the microtremor data. The acquisition of seismic data was carried out using a 4.5 Hz triangle array geophone at 35 measurement points. The microtremor data at each location was analysed by using the Spatial Autocorrelation (SPAC) to obtain the Rayleigh wave dispersion curve. The Vs values are then classified based on SNI 1726:2019. The results of the microtremor analysis showed that the Vs values are relatively high ranging from 300 m/s – 1500 m/s at different depths associated with hard rock as also observed in the field. At depth of 30 km, Vs30 is higher in the west and in the southeast while in the north the velocity is lower at around 300 m/s. It is suggested to investigate more detail and local type of rocks before infrastructure development to mitigate possible damages.
Transwomen Leading Covid-19 Pandemic Response: Experiences of an Indonesian Waria Community
Authors: Manurung Duma , Pertiwi Pradytia
Published: November 2023

There is a lack of research on how Covid-19 pandemic affects transwomen populations in Indonesia, which creates a gap in understanding their vulnerabilities and resilience. Kebaya Foundation is an Indonesian Waria community that took part in responding to the Covid-19 outbreak in Yogyakarta in 2020. The initiative from Kebaya Foundation is timely following global agenda of leaving no one behind in DRR and humanitarian crisis underpinned by leadership of those most at-risk. Yet, there is limited scholarly evince that document the role and practice of the transwomen community in disaster response. This research aims investigate role and practices of Kebaya foundation in responding to Covid-19. A single case study method was adopted involving document reviews and semi-structured interviews with Kebaya Foundation staffs. The inquiry and analysis were guided by Pierre Bourdieu Social Practice theory The data were analyzed using thematic analysis and then we generate four themes related to role and experiences of Kebaya Foundation leading the Covid-19 response. This research shows that the Covid-19 pandemic increased the vulnerability of gender minority communities, while also providing opportunities for them to participate in emergency response efforts.