Miracle-dz/UniFAR-FTUs huggingface dataset:
Research on Optimization of Charging Strategy Control for Aged Batteries

Rapid charging of lithium-ion batteries has become a major bottleneck for the large-scale deployment of electric vehicles. In this article, a charging optimization method is proposed for lithium ion batteries based on their aging characteristic, which takes charging time and temperature rise into consideration. An electric-thermal battery model is utilized to estimate the battery temperature during charging. A search for the optimal charging current pattern is performed using a particle swarm optimization (PSO) algorithm combined with fuzzy reasoning. The experiments are conducted on batteries with different aging states to verify the proposed method. Besides, the proposed method is compared with traditional constant current-constant voltage (CC-CV) charging method. Results show that the proposed charging strategy has advantages on maximum temperature rise maintenance and charging speed improvement for aged batteries with unknown aging state. The proposed charging method provides a way for aged batteries charging considering charging time and temperature rise.
Water quality assessments and metagenomic analysis of the polluted river Apatlaco, Mexico

The aim of this study is to analyze the water quality parameters and bacterial diversity and thereby understand the effect of water quality on the microbial population structure in the river. The following parameters: total coliforms, chemical oxygen demand, harness, ammonium, nitrite, nitrate, total Kjeldahl nitrogen, dissolved oxygen, total phosphorus, total dissolved solids, and temperature were analyzing along 17 sampling points in the river. The worst levels of pollution were 510 mg/L chemical oxygen demand, 7 mg/L nitrite, 45 mg/L nitrate, 2 mg/L dissolved oxygen, and 756 mg/L of total dissolved solids. Whole metagenome shotgun sequencing was performed at 4 key points along the river (P1,P7,P10 and P17), the first point had clean water and the other points were polluted, as a result of this pollution, the structure of microbial communities along the river have changed. Proteobacteria and Bacteroidetes were the most representative phyla with a relative abundance of 57 and 43% respectively for P1, 82 and 15% for P7, 69 and 27% for P10 and 87 and 10% for the last point P17. P1 is rich in microorganism such as Limnohabitans a planktonic bacterium very common in freshwater ecosystems. However, in P7, P10 and P17 are rich in opportunistic pathogens such as Acinetobacter Arcobacter and Myroides that endangers the health of around 1.6 million people which live around the area. These results elucidate the influence of the pollution on the microbial community and the likely effects on the health of the people around.
Cu oxo nanoclusters for direct oxidation of methane to methanol: formation, structure and catalytic performance

Cu oxo nanoclusters hosted in microporous solids have emerged in the past decades as promising materials for catalyzing the selective conversion of methane to methanol. In this minireview, we highlight the activity of Cu-zeolite materials in the selective oxidation of methane to methanol, and discuss the mechanism of this reaction over different Cu-oxo structural proposals. We aim to offer a comprehensive picture of recently published spectroscopy and theoretical studies which tackled the structure–activity relationships of Cu-oxo nanoclusters. Here it is discussed how the topological diversity of zeolites and other factors influence the formation and stabilization of Cu-oxo motifs, as well as their ability to activate CH4 at mild temperatures. Finally, we also give a brief overview on the catalytic performance of Cu-oxo clusters hosted in metal organic frameworks. At the end of this minireview, we summarize the main conclusions extracted from the literature evaluation, and we provide a brief outlook on the research opportunities in this field.
COVID 19 comprehensive management in a regional hospital of Northwestern Spain

Introduction: The COVID-19 pandemic has brought about a paradigm shift in healthcare. Objective: To evaluate the utility of a strategy to comprehensively address the pandemic in a health area that covers 42,000 people. Method: Between March 10 and May 15, 2020, the COVID Unit was created in the corresponding regional hospital, and an independent circuit was established for the diagnosis and management of patients with suspected or confirmed COVID-19; social health centers were monitored with PCR testing. Results: Eighteen COVID-19-positive patients (age 72.9 ± 13.2 years) were admitted, out of which 66% were males. All these patients had pneumonia and 67% had respiratory distress syndrome; no one required mechanical ventilation. Mean hospital stay was 9.4 ± 5.3 days, and mortality, 11%. PCR tests were applied to all hospital residents (n = 827) and workers (n = 519), 1,044 phone calls were made and 36 hospital admissions were avoided. Only 50 patients required close follow-up, out of which four (0.48%) were positive for COVID-19. Conclusion: Clinical monitoring at the hospital and social health centers showed that patient profile was like that documented in the literature and that the incidence of COVID-19 was low in social health centers.
The light microscopic investigation of the effects of in-ovo administered bisphenol A (BPA) on the development of testes

amacla Isa Brown irki yumurtaci tavuklara ait 310 adet dollu yumurta kontrol, tasiyici kontrol, 50, 100, 250 µg/yumurta BPA olmak uzere 5 gruba ayrildi. Test solusyonlari inkubasyondan once yumurta sarisina enjekte edildi. Inkubasyonun 13. 18. ve 21. gunlerinde her gruptan 6 adet canli erkek embriyo elde edilene kadar yumurtalar acildi. Alinan testis dokulari %10'luk tamponlu formalin (pH 7.4) solusyonunda tespit edildi. Dokular rutin histolojik metotlarla takip edilerek parafinde bloklandi. Bloklardan alinan 6 μm kalinligindaki kesitlere ise Crossmon'un uclu boyama yontemi uygulandi. Tum histolojik ve histometrik degerlendirmeler sol testis’ler uzerinde yapildi. Inkubasyonun 13. 18. ve 21. gunlerinde BPA uygulanan gruplarda testis dokularinda gelisme geriligi, az sayida hucre kordonu ve zayif hucresel organizasyon gozlendi. Inkubasyonun 21. gununde deney gruplarinin ortalama seminifer tubul caplarinda kontrol gruplarina kiyasla belirgin dususler tespit edildi (p<0.05). Kontrol gruplarina kiyasla deney gruplarinda ortalama korteks kalinliginda artis gozlendi (p<0.05). Elli ve 100 µg/yumurta dozunda BPA uygulanan gruplar kontrol gruplari ve 250 µg/yumurta dozunda BPA uygulanan grupla karsilastirildiginda ortalama testis yuzey alaninda onemli bir artis tespit edildi (p<0.05). Elli ve 100 µg/yumurta dozunda BPA uygulanan tavuk embriyolarinda BPA'nin oosit benzeri hucre topluluklari iceren kalinlasmis korteksle karakterize ovotestis gelisimini tetikledigi, buna karsin 250 µg/yumurta dozunda uygulanan BPA'nin ise toksik etkiye sahip oldugu goruldu. BPA'nin tavuk embriyolarinda gelismekte olan testisler uzerinde doza bagli olarak hem toksik hem de ostrojen benzeri etkilere neden olabilecegi sonucuna varildi
Induction of diabetes in Wistar rats: is the streptozotocin model feasible at any age?

Diabetes mellitus (DM) is an epidemic that affects millions of people worldwide. Because of its high morbidity and mortality, animal models of diabetes are indispensable to achieve a better understanding of the pathophysiological mechanisms and discover new treatments. The classic used model to induce type 1 DM involves streptozotocin (STZ) administration and it is well known that the association of streptozotocin with a high fat diet also induces type 2 DM. However, these studies are performed in rats between 60-90 days and should be performed in older animals because aging is a major risk factor for other diseases, that occur concomitantly with DM. Thus, this study evaluated diabetes in aged Wistar rats at 300 days. Diabetes was induced by an intraperitoneal injection of 60 mg/kg STZ. Three days after DM induction, the rats exhibited alterations in clinical signs and increases in the levels of aspartate and alanine aminotransferase, urea, and creatinine. Microscopic changes were observed in the kidneys and liver. These findings indicate that this model is not feasible in rats at 300 days of age and should not be attempted by other research groups or should be performed by researchers who want to study the complications of diabetes.
Streams as Seams: Carving trajectories out of the time-frequency matrix

A time-frequency representation of sound is commonly obtained through the Short-Time Fourier Transform. Identifying and extracting the prominent frequency components of the spectrogram is important for sinusoidal modeling and sound processing. Borrowing a known image processing technique, known as seam carving, we propose an algorithm to track and extract the sinusoidal components from the sound spectrogram. Experiments show how this technique is well suited for sound whose prominent frequency components vary both in amplitude and in frequency. Moreover, seam carving naturally produces some auditory continuity effects. We compare this algorithm with two other sine extraction techniques, based on peak detection on spectrogram frames. The seam carving skips this step and turns out to be applicable to a variety of sounds, although being more computationally expensive.
The Quality of Mandatory Non-Financial (Risk) Disclosures: The Moderating Role of Audit Firm and Partner Characteristics

Risk disclosures are among the most important types of non-financial information valued by the investors. Risk disclosures are mostly narrative and proprietary in nature; consequently, their accuracy and assurance are highly important to prevent disclosures from becoming boilerplate and losing their relevance. By exploiting the unique features of a setting where risk disclosure is mandatory and under a positive assurance requirement, we investigate whether the quality of audited risk disclosures is associated with the type of audit firm (Big-4 versus non-Big-4), the characteristics of the audit firm, and the attributes of the audit partner. Our results show an association between risk disclosure quality and auditors, but not in the expected ways. After the enforcement of a regulation requiring a detailed description of risks in the Operating and Financial Review (OFR) and a positive assurance of external audit over these disclosures, we do not document any significant Big-4 effect. The quality of risk disclosures is associated with the attributes of the audit partner, namely, familiarity with different client risk disclosures, industry expertise, and gender, independently of an affiliation with a Big-4 audit firm. Along these lines, we extend recent evidence on the audit partner effects in the assurance of non-financial narrative information.
A Novel Robust Observer-Based Nonlinear Trajectory Tracking Control Strategy for Quadrotors

In this article, a novel robust observer-based nonlinear control approach is proposed for quadrotors with unmodeled dynamics and external disturbances, wherein the tracking errors are restricted effectively. Two nonlinear disturbance observers are proposed to deal with uncertainties in the inner and outer loops, respectively. On this basis, a robust observer-based nonlinear control approach is put forward for quadrotor systems. Specifically, in the outer loop subsystem, a robust observer-based control scheme is proposed, which can reduce unexpected tracking errors for quadrotors effectively. Subsequently, based upon the geometric methods, the coordinate-free attitude controller and the nonlinear disturbance observer are integrated as a robust controller in the inner loop subsystem. Based upon full nonlinear dynamics, the solutions of the closed-loop system are proven to be uniformly ultimately bounded by means of rigorous Lyapunov analysis. A series of comparative experiments consisting of the implementation of a nonlinear proportional-integral-derivative (PID)-type controller, an observer-based sliding mode controller, and the proposed controller are conducted to demonstrate the remarkable performance of the proposed method in terms of higher tracking accuracy and stronger robustness.
Patterns of nutrient limitation on periphyton in a tropical black-water lake depend on the relative contribution of autotrophic and heterotrophic components

ABSTRACT This study addressed the occurrence of resource co-limitation of periphytic communities in a tropical black-water lake. We performed a field experiment using nutrient diffusing substrates to create treatments with nitrogen (N) and phosphorus (P) amendments. Two light levels were considered: high light (near the water surface) and low light (near the lake bottom). Periphyton nutritional limitation was also assessed using available literature on optimal stoichiometric ratios. Based on the stoichiometric ratios, we found that the periphytic autotrophic community was mostly N-limited. However, we observed higher values of total biomass (carbon [C]: mg m−2) in treatments with N and P joint addition and lower values of carbon to chlorophyll a (C:Chl-a) ratio in treatments with only N addition. We concluded that N limitation primarily affected the the algal periphytic community, and the N and P co-limitation primarily affected the total periphytic biomass, which also includes heterotrophic organisms. Our results of stoichiometry and periphyton development support the occurrence of N and P co-limitation at the community scale. Our results ultimately support the primacy of co-limitation as hierarchical levels of organization increase in biological systems, such as periphytic communities composed of diverse taxa.
Ecological plasticity of the European eel Anguilla anguilla in a tidal Atlantic lake system in Ireland

Abstract Recent studies have shown that anguillid eel populations in habitats spanning the marine–freshwater ecotone can display extreme plasticity in the range of catadromy expressed by individual fish. The apparent use of marine and freshwater habitats by the European eel Anguilla anguilla was examined by analysing the strontium (Sr) and calcium (Ca) concentrations in otoliths of eels collected from a tidal Atlantic lake system in Ireland. Variations of the Sr:Ca ratio in the otoliths indicated that a variety of environmental salinities had been experienced in the habitats that were occupied during the growth phase of these individuals in the tidal Atlantic lake system. The otolith microchemistry of these eels indicated that most of the eels had entered each salinity environment (freshwater (FW); brackish water (BW); marine-dominated water (MW) and full seawater (SW)) from fresh water to full seawater just after recruitment and had stayed in each environment until maturation without movement to other salinity environments. Only 2 of 93 (2%) eels had shifted their habitat once in their lives. This result suggests that each individual might have an environmental habitat preference, although each individual could move along a short (<2 km) salinity gradient.
A Novel Emotion Lexicon for Chinese Emotional Expression Analysis on Weibo: Using Grounded Theory and Semi-Automatic Methods

As one of the most popular social media platforms in China, Weibo has aggregated huge numbers of texts containing people’s thoughts, feelings, and experiences. Analyzing emotions expressed on Weibo has attracted a great deal of academic attention. Emotion lexicon is a vital foundation of sentiment analysis, but the existing lexicons still have defects such as a limited variety of emotions, poor cross-scenario adaptability, and confusing written and online expressions and words. By combining grounded theory and semi-automatic methods, we built a Weibo-based emotion lexicon for sentiment analysis. We first took a bottom-up approach to derive a theoretical model for emotions expressed on Weibo, and the substantive coding led to eight core emotion categories: joy, expectation, love, anger, anxiety, disgust, sadness, and surprise. Second, we built a new emotion lexicon containing 2,964 words by manually selecting seed words, constructing a word vector model to expand words, and making rules to filter words. Finally, we tested the effectiveness of our lexicon by using a lexicon-based approach to recognize the emotions expressed in Weibo text. The results showed that our lexicon performed better in Weibo emotion recognition than five other Chinese emotion lexicons. This study proposed a method to construct an emotion lexicon that considered both theory and application by combining qualitative research and artificial intelligence methods. Our work also provided a reference for future research in the field of social media sentiment analysis.
Infodemia and COVID-19. Evolution and viralization of false information in Spain

Introduction: Verifying information is a democratic challenge, especially in periods of exceptionality and crisis Objective: To analyze the type of hoaxes identified during the COVID-19 pandemic according to their topic, verification date, distribution channels, viralization in other countries and identification of their promoters Methodology: 166 hoaxes reported by the organization Maldita es to the collaborative verification platform LatamChequea from February 14 to April 15, 2020 have been analyzed Results: Among the main results, we draw attention to the high presence of misinformation around infections and preventive measures Conclusions: Misinformation and disinformation increases as the pandemic sets in and a series of containment measures are taken, we hightlight the viralization of hoaxes through social networks and instant messaging services, in addition to its international reach and the high difficulty in identifying its promoters
Advanced single molecule localization microscopy for imaging cellular nuclei

In this PhD research, single molecule localization microscopy (SMLM) was used to image nuclear structures with a resolution down to several nanometers.The scope of this PhD research is to develop a 3D SMLM microscope which can overcome several principle limitations in imaging nuclei in 3D. The advanced improvements during this PhD research include a broad range of research subjects associated to SMLM techniques. Firstly, one of the most common problems of a super-resolution microscope is sample drift, because a small sample drift may result in artefacts and can hamper the resolution. A speckle-based method was developed to correct sample drift without changing the standard design of the SMLM setup. This drift correction method can achieve a resolution of several nanometers. Secondly, another principle problem is that commonly used organic fluorophores are restricted in their photon budget. It is often observed that the chemical structure of fluorophores change after high laser irradiance resulting in photobleaching. A patterned illumination technique was developed which allows the user to define arbitrary regions of interest for illumination with a flat-top intensity profile. Thirdly, for SMLM in particular, a carefully adjusted chemical environment in the sample is recommended to induce sufficiently blinking signals of the organic fluorophores in combination with an appropriate laser irradiance. However, such an imaging buffer can degrade over time and may not be suitable for long time imaging. Nanographene was presented as a new class of fluorophores which have blinking properties without an imaging buffer. Therefore, the nanographenes facilitate a wide range of SMLM applications including bio-imaging and material science. These advanced developments are not only for imaging nuclei, but also applicable to applications in other biological researches and in material science.
Highly efficient adsorptive removal of heavy metal ion and cationic organic pollutant from single and binary solutions using an EDTA-modified agricultural by-product-based adsorbent

Heavy metal ions and organic pollutants are hazardous contaminants commonly coexisted in various real wastewaters usually requiring complex and expensive treatment technologies. Herein, a novel low-cost agricultural by-product-based adsorbent, ethylenediaminetetraacetic acid-modified lotus seedpod (EDTA-LSP), was facilely synthesized and further utilized for the removal of toxic Pb2+ and malachite green (MG). In single pollutant systems, the EDTA-LSP showed considerably high adsorption capacities and rapid adsorption kinetics for Pb2+ (225.88 mg g–1; 30 min) and MG (347.87 mg g–1; 40 min), which could be rarely achieved simultaneously by many previously reported adsorbents. Particularly, the coexistence of Pb2+ and MG did not cause significant mutual interference, and high adsorption efficiencies for the two contaminants were still achieved. By a series of characterization analyses, it was revealed that the EDTA moieties on the adsorbent preferentially bound with Pb2+, and the formed EDTA-Pb2+ complexes could serve as effective sites for adsorption of cationic MG due to their negative charge nature. The differential binding behaviors, in turn, largely reduced the competition between the two contaminants and led to a quite satisfying coadsorption. Besides, this adsorbent could be reused several times without an obvious decrease in removal efficiencies for Pb2+ and MG. The low cost, simple synthesis, efficient adsorption/ coadsorption, and excellent reusability indicate the EDTA-LSP is a promising adsorbent candidate for wastewater cleanup.
Effect of the height of the stem on the polysaccharide composition ofPinus brutia (Ten) wood and kraft-pulp

The first goal of this study was to determine the polysaccharide composition of Pinus brutia wood and how this composition changes during kraft pulping. The second goal was to determine the effect of the stem height on chemical composition. The content of hemicelluloses was about 280 mg/g at a height of 1.3 m, whereas the content was about 300 mg/g at the top of the stem 4.3 m . The main sugars in the wood of P. brutia were mannose 102 mg/g dw , xylose 69 mg/g dw , and glucose 44 mg/g dw . During kraft pulping, 52% of the total hemicelluloses were degraded. Glucose and xylose were more stable than mannose. The total amounts of cellulose in the wood and in the kraft pulp of P. brutia were determined to be 330 mg/g and 661 mg/g, respectively, at 1.3 m.