bluuebunny/crossref_metadata_2025_split huggingface dataset:
Aprendizaje activo en Urbanismo: aproximación global desde una formación local
Authors: Soto Caro Marcela Andrea , Barrientos Díaz Macarena Paz 
Published: December 2019

El escenario actual que enfrenta la educación en arquitectura y urbanismo plantea nuevos desafío: por una parte, un contexto urbano cada vez más complejo en términos sociales, culturales y de estructura urbana. Y por otra, un estudiante que presenta nuevas competencias, asociadas a la disrupción tecnológica, los nuevos modos de interacción social y la generalización de la educación. Más allá de la puesta en práctica de nuevas metodologías docentes, el objetivo frente a ello es formar profesionales capaces de ser parte de un complejo ambiente construido a partir de una valoración integral de sus propias competencias. Las implicancias que la globalización ha tenido en las problemáticas urbanas, permite que desde una formación local podamos establecer una aproximación global a las mismas; con el objetivo de mejorar la calidad de la enseñanza-aprendizaje en las asignaturas lectivas de arquitectura y urbanismo.
Architectural education is facing a current scenario that poses new challenges: on one hand, an increasingly complex urban context in social, cultural and urban structure terms. And on the other, a student who presents new skills, related to the technological revolution, new modes of social interaction and the generalization of education. Beyond the implementation of new pedagogycal methodologies, the objective is to train professionals capable of being part of this new and complex built environment based on an integral assessment of their own competences. The implications that globalization has had on urban problems, allows us to establish a global approach to them from a local trainning; with the aim of improving the quality of teaching-learning process in architecture and urbanism.
Assessment of Anaerobic Co-Digestion Effects of Maize Cob and Poultry Manure on Biogas Yields and Their Digestate Characteristics
Authors: Chomini M. S. , Joshua V. I. 
Published: December 2019

Aim: The aim of the study was to assess the effects of anaerobic co-digestion of maize cob and poultry manure on biogas yields and their digestate characteristics.
Place and Duration of Study: Department of Forestry Technology, Federal College of Forestry, Jos between March and April, 2018.
Methodology: Slurries of five co-substrate treatment ratios viz 0:1(T1), 1:3(T2), 1:1(T3), 3:1(T4) and 1:0(T5) of these wastes (in three replicates) were separately fed to 13.6L locally made batch-digesters. The anaerobic reactors were monitored for a 56 day retention period. Weekly biogas yields and some digestate characteristics were measured by standard methods.
Results: The cumulative biogas yields was in the order of T3(2481.3 mL/kg) >TI(2197.9 mL/kg) > T4(2163.0 mL/kg) > T2(2116.3 mL/kg) >T5(1713.2 mL/kg), in favor of the mixed substrates. While the percentage C:N reductions ranged from (12.94% - 81.80%), with T5 and T1 recording the highest and lowest values respectively. The chemical oxygen demand removal was in the order of T3(80.70%) > T4(58.00%) >T5(46.81%) >T1(34.15%) >T2(13.16%). The anaerobic digestion (AD) effected reductions in Mg, C, Ca, P, Mn, Zn, Fe, Pb and increase in Cu contents of the digestates across treatments. While the K contents increased in T2(36.72%), T3(229.79%) and T4(220.51%); %N in T3(9.94%), T4(113.19%) and T5(291.84%) and Na increased only in T4(4.55%). The Cu contents indicated % increase in the order of T5(487.5%) >T3(270.97%) >T2(268.10%) >T4(43.66%) >T1(35.82%).
Conclusion: The anaerobic co-digestion of these organic wastes had unlocked the alternative energy potentials, enhanced the bioremediation tendency, while promoting sustainable public health and environmental management.
Effect of Ethanolic Extract of Trigonella foenum-graecum L. Seeds on Reproductive System of Male Albino Rats
Authors: Singh Madhulika , Verma G. N. 
Published: December 2019

Aims: The present study was undertaken to assess the antispermatogenic and antifertility efficacy of ethanolic extract of Trigonella foenum-greacum seeds.
Methodology: Aqueous solution of the extract (250 mg/kg b.wt/day) when administered orally for 45 days to adult male albino rat (Duckray strain).
Results: Seeds extract caused inhibition of spermatogenesis as well as inability to mate with normal untreated female rats of proven fertility. There occurred a significant decrease in absolute and relative weights of testis and seminal vesicle and increase in epididymal weight, whereas of ventral prostate and coagulating gland remained unchanged. Sperm concentration and motility in the cauda epididymis was also decreased. Increased incidence of separation of head and tail pieces of spermatozoa was seen in the epididymal smear. Histologically, testis of experimental animals showed arrest of spermatogenesis at the secondary spermatocytes stage and there was deposition of cellular debris in semineferous tubular lumen. The spermatids were not properly developed and interstitial cells were very sparse and degenerated. However, there was no evidence of damage to the spermatogonia. Oral treatment of extract did not affect the body weight of animals. Quantitative estimation of marker testicular enzymes, e.g., sorbitol dehydrogenase showed a significant decrease whereas lactate dehydrogenase and gamma-glutamyl transpeptidase levels were significantly increased.
In conclusion: These results suggest that T. foenum-greacum, may induce male infertility in rats, therefore, should be considered further as a potential male antifertility agent.
A Clinical Trial of Cranberry and Elderberry Extracts (Berdi® Sachet) for Urinary Tract Infection in Pakistani Population
Authors: Mehmood Yasir , Umar Hafiz , Riaz Humayun , Farooq Umar , Yousaf Hammad 
Published: December 2019

Lower urinary tract infection (UTI) is very common diseases. Recurrent UTI remain challenging to treat because the main treatment option is long-term antibiotic and this poses a risk for the emergence of bacterial resistance. Some options to avoid this risk are available, including the use of cranberry and elderberry products (herbal products extract). However, this can lead to the advent of bacterial resistance. The cross sectional study was designed to evaluated the efficacy of above products. The study was conducted from 23 October 2019 to 28 October 2019 in Arif Memorial Teaching Hospital, Lahore, Pakistan. The subjects were outpatients aged 20 to 65 years. UTI symptoms were recorded in the daily diary before, during and after treatment and assessed by the Jackson score. Following approval by the Ethics Committee of Rashid Latif Pharmacy College, the questionnaire (ROUTE2-002) was compiled and information of UTI patients using cranberry and elderberry extracts (Berdi® Sachet) was collected. Compliance and tolerability were considerable obstacles in this study. A total of 67 patients were screened for participation; 12 were unwilling to participate and 55 were enrolled for clinical trial and all patients had urinary tract irritation. In this study 55 (100%) UTI patients were cured with cranberry and elderberry extracts (Berdi® Sachet). Further investigation is needed to confirm this effect and to evaluate the health benefits of cranberries and elderberry.
Effects of Nitrogen and Carbon Sources on Biosurfactant Production by Hydrocarbon-utilizing Stenotrophomonas sp.
Authors: Ezebuiro Victor , Jonathan Otaraku Ipeghan , Oruwari Boma , Chijioke Okpokwasili Gideon 
Published: December 2019

Aim: This study investigated effects of nitrogen and carbon sources on the production of biosurfactant by a hydrocarbon-utilizing bacterium, Stenotrophomonas sp.
Methodology: The hydrocarbon-utilizing bacterium was isolated with Bushnell Haas (BH) broth using enrichment method. Biosurfactant production was screened by evaluating the following characteristics: Emulsification index (E-24), oil spreading (displacement), tilted glass slide, haemolysis on blood agar, and lipase production. Effects of combination of nitrogen sources (yeast extract and NH4NO3, yeast extract and urea, yeast extract and asparagine, yeast extract and peptone, NaNO3 and peptone, NaNO3 and asparagine, and yeast extract and NaNO3) and carbon sources (glucose, fructose, galactose, cassava peel, soya bran, olive oil, sucrose, crude oil, diesel and glycerol) on biosurfactant production were determined with emulsion stability and surface tension as responses. The bacterium was identified based on phenotypic, microscopic, and biochemical characteristics.
Results: The isolate produced colonies on BH agar containing either naphthalene or hexadecane as sole source of carbon after 48-h incubation. Screening characteristics for the production of biosurfactant by the isolate were as follows: 46% emulsification index, 3.1 cm2 oil displacement, 1.8 cm zone of clearance on tributyrin agar, γ-haemolysis, and positive tilted glass slide. The best carbon source with the highest emulsion stability (51.6%) was fructose whereas the best surface tension reduction (30.85 mN/m) was observed with olive oil as carbon sources after 7 days of incubation. For nitrogen, the combination of yeast extract and NH4NO3 gave the highest emulsion stability (60.7%) and the best surface tension reduction (39.58 mN/m). The data obtained were significant at P<0.05 and the bacterial isolate identified as Stenotrophomonas sp.
Conclusion: This study has demonstrated the ability of the hydrocarbon-utilizing bacterium, Stenotrophomonas sp. to produce biosurfactant, indicated by reduction of surface tension and formation of stable emulsion. This method of biosurfactant production can be further scaled up for industrial purpose.
Overheated Self‐Managing Cellulose Nanocage Dressing by Reconstructing Hydrogen Bonds Networks
Authors: Chen Rimei , Lu Qin , Sun Yupei , Xie Zhen , Zhu Hongxiang , Bu Qing , Sun Runcang , Wang Shuangfei , He Hui 
Published: December 2024

AbstractInterfacing intelligent responsive molecules with biocompatible nanofibers is a promising strategy for developing overheated self‐managing photothermal dressings for convenient and cost‐effective clinical applications. Here, an anisotropic staggered cellulose nanocage dressing with overheated self‐managing properties is constructed by temperature‐responsive flexible triblock copolymer Pluronic® F‐127 interpenetrating with smart cellulose nanofiber network skeleton, which interfaced with white light (635 nm) responsive protoporphyrin IX, and NIR‐I (808 nm) responsive dopamine, NIR‐II (980 nm) responsive upconversion nanoparticles. Ingeniously, the dressing can release 1O2 and produce heat energy under the stimulation by continuous natural light and NIR‐I laser during the anti‐inflammation phase, respectively, and further promote the formation of new capillaries by producing NO during the epithelial formation stage under NIR‐II laser. Interestingly, the dressing, which resembled water droplets, can penetrate and adapt to irregular wounds via sol–gel transformation at 32 °C, while also facilitating intelligent management of the self‐cooling regulation via the reconstruction of its hydrogen bond network driven by overheating temperatures (>50 °C). The proposed method overcomes the shortcoming of requiring auxiliary strategies for temperature monitoring, providing new insights for guiding the design of practical dressings.
Breaking Kinetic Barriers in Silicon Anodes via Strategic Electrolyte Additive Engineering
Authors: Deng Yingkang , Li Chengfeng , Guo Ruoyu , Xie Zhangyating , Huang Lingling , He Jiarong , Xing Lidan , Li Weishan 
Published: December 2024

AbstractThe silicon anode is one of the primary contenders for lithium‐ion batteries of higher energy density owing to its outstanding theoretical capacity. However, the native SiO₂ layer (2–5 nm) on commercial silicon nanoparticles severely limits ion transport and induces polarization, especially under high current densities. This study systematically examines the influence of SiO₂ layer thickness on silicon anode performance, identifying significant polarization as the main barrier to stable cycling. To tackle this, a strategic electrolyte additive is suggested, bis(trimethylsilyl)trifluoroacetamide (BTA), which mitigates these effects by scavenging inactive SiO₂ and promoting the formation of conductive LixSiOy intermediates. Experimental and computational results show that BTA dramatically reduces electrochemical polarization and enhances Li⁺ transport, leading to superior cyclic stability. The Si anode with BTA‐modified electrolyte maintains 1436.5 mAh g−1 after 120 cycles at 500 mA g−1—substantially outperforming the base electrolyte (894.5 mAh g−1). This work highlights a critical strategy for overcoming kinetic barriers and advancing silicon anodes toward practical, high‐density energy applications.
Uncovering Required Molecular Properties for Interface Regulators and Modification Mechanisms for Zn Anode in Aqueous Batteries
Authors: Wang Kuo , Zhan Hongtu , Liu Xiao‐Xia , Sun Xiaoqi 
Published: December 2024

AbstractInhomogeneous deposition and side reactions at Zn anode in aqueous batteries seriously limit the electrochemical performance. Electrolyte additives at low content are desired, and the uncovery of fundamental required molecular properties is necessary. Herein, systematic studies are carried out to reveal factors showing correlations with the interface regulation effect and stability of the Zn electrode, which presents a screening rule for electrolyte additives. Accordingly, a phosphoramide (PA) molecule stands out as a suitable interface regulator with only 0.1% addition. Further analysis demonstrates the transformation of Zn2+ solvation structures from water‐dominated in the bulk electrolyte to PA and anion participation toward the Zn surface. The latter helps to homogenize Zn2+ flux, modulate desolvation paths, regulate deposition kinetics, and suppress side reactions, which ensures the uniform and dense plating of Zn. Even with the high depth of discharge/capacity of 52.2%/50 mAh cm−2 and 92.4%/88.5 mAh cm−2, symmetric Zn cells still reach 392 h and 140 h lifespans, respectively, superior to PA‐free cells (fails before 2 cycles/cannot cycle). The 0.1% PA additive also enables stable cycling for full cells.
Unique Non‐Chelating Multidentate Ligand Tuning Solvation Structure and Interfacial Chemistry for High‐Voltage Lithium Metal Batteries
Authors: Lian Jing , Tan Shendong , Lou Jiatao , Lan Jiaqi , Cui Wenting , Han Zhuo , Zheng Guorui , Hou Tingzheng , Lv Wei , Liu Ming , Wang Ziqiang 
Published: December 2024

AbstractElectrolyte engineering is a key strategy for achieving high‐energy lithium metal batteries. Among various solvents, fluorinated ether‐based electrolytes have shown promising results. However, these solvents often have several limitations: weak solvating ability, electrochemical reduction instability, and potential environmental hazards. Herein, a novel cyanated hexacyclic ether electrolyte (CHEE) is reported. The terminal cyano group (─CN) of solvent facilitates efficient Li+ transport through its coordination ability, while the electron‐withdrawing nature of ─CN weakens the solvating ability of the ether oxygen atom. This modification leads to anion‐dominated solvation structures, wherein the nitrogen atom serves as the primary coordination site in the coordinated solvent. This unique non‐chelating, multidentate ligand enables a robust solid‐electrolyte interphase (SEI) and excellent electrochemical performance of lithium metal batteries. CHEE enables a Li–Cu cell to achieve a high coulombic efficiency of 99.5%, while a Li‐NMC811 cell demonstrates a capacity retention of 91% after 300 cycles. Notably, the Li‐NMC811 cell maintains stable cycling for 200 cycles at an elevated temperature of 60 °C. Furthermore, CHEE enables the operation of a Li‐NMC811 pouch cell with a low N/P, achieves a high capacity of 1.25 Ah. This study highlights the potential of cyanated ether in developing novel electrolyte systems for high‐performance lithium metal batteries.
Application of Adipose Extracellular Matrix and Reduced Graphene Oxide Nanocomposites for Spinal Cord Injury Repair
Authors: Verstappen Kest , Bieler Lara , Barroca Nathalie , Bronkhorst Ewald M. , Couillard‐Després Sébastien , Leeuwenburgh Sander C.G. , Marques Paula A.A.P. , Klymov Alexey , Walboomers X. Frank 
Published: December 2024

AbstractGraphene‐based materials (GBMs) hold strong promise to restore the spinal cord microenvironment and promote functional recovery after spinal cord injury (SCI). Nanocomposites consisting of reduced graphene oxide (rGO) and adipose tissue‐derived extracellular matrix (adECM) are known to promote neuronal growth in vitro and to evoke a biocompatible response in vivo when implanted on top of the intact spinal cord. In this study, pristine adECM and adECM‐rGO nanocomposites are implanted directly after hemisection SCI in rats. Scaffolds composed of collagen type I (COL) are applied as negative control, based on evidence that COL triggers integrin‐mediated astrogliosis. However, COL scaffolds induce orthotopic bone formation in the lesion site and are therefore excluded from further analyses. Compared to pristine adECM, adECM‐rGO nanocomposites completely restore spinal cord integrity. Macrophage‐mediated uptake and clearance of rGO remnants is observed as early as 3 weeks post‐implantation. Nanocomposites show an elevated presence of βIII‐tubulin‐positive axons in the host‐material interface after 8 weeks, yet scaffold penetration by axons is only occasionally observed. This is partially due to an increased expression of chondroitin sulfate proteoglycans (CSPGs) within the nanocomposites, even though reactive astrogliosis is unaltered. Despite the complete restoration of tissue architecture, adECM‐rGO treatment does not significantly improve functional recovery.
Highly Efficient Synthesis of α‐Amino Acids via Electrocatalytic C‐N Coupling Reaction Over an Atomically Dispersed Iron Loaded Defective TiO2
Authors: Zhu Zhonghuan , Jiang Yimin , Xu Leitao , An Qizheng , Nga Ta Thi Thuy , Chen Junlin , Fan Yun , Liu Qinghua , Dong Chung‐Li , Wang Shuangyin , Zou Yuqin 
Published: December 2024

AbstractThe synthesis of α‐amino acids via the electrocatalytic C‐N coupling attracted extensive attention owing to the mild reaction conditions, controllable reaction parameters, and atom economy. However, the α‐amino acid yield remains unsatisfying. Herein, the efficient electrocatalytic synthesis of α‐amino acids is achieved with an atomically dispersed Fe loaded defective TiO2 monolithic electrocatalyst (adFe‐TiOx/Ti). The desired electrocatalyst composition for the hydrogenation of oxime is screened. The prepared adFe‐TiOx/Ti exhibited a high glyoxylic acid conversion of ≈100% and a glycine selectivity of 80.2%. The electrochemical experiments and theoretical calculations demonstrated that atomically dispersed Fe (adFe) sites and oxygen vacancies (OVs) enhanced the adsorption of glyoxylic acid (GA), glyoxylic oxime (GO), and nitrate (NO3−). adFe sites further promote the step of H2NO* → H2NOH* in the conversion of NO3− to hydroxylamine (NH2OH) and the step of NH‐CH2‐COOH* → NH2‐CH2‐COOH* in the reduction of GO to glycine. The coupling pathway and the critical intermediate are revealed by synchrotron radiation Fourier transform infrared (SR‐FTIR) spectroscopy and differential electrochemical mass spectrometry (DEMS). Additionally, six other α‐amino acids are successfully synthesized by the adFe‐TiOx/Ti, showcasing its versatility in the electrosynthesis of α‐amino acids. This work provides an efficient electrocatalyst for the C‐N coupling synthesis of α‐amino acids.
High Defect Tolerance Breaking the Design Limitation of Full‐Spectrum Multimodal Luminescence Materials
Authors: Zhang Pan , Zhao Xiaohui , Jia Zhenwei , Dong Jiabin , Liang Tianlong , Liu Yue , Cheng Qilin , Ding Liqun , Wu Li , Peng Dengfeng , Kong Yongfa , Zhang Yi , Xu Jingjun 
Published: December 2024

AbstractWith the development of optical anti‐counterfeiting and the increasing demand for high‐level information encryption, multimodal luminescence (MML) materials attract much attention. However, the discovery of these multifunctional materials is very accidental, and the versatile host suitable for developing such materials remains unclear. Here, a grossite‐type fast ionic conductor CaGa4O7, characterized by layered and tunnel structure with excellent defect tolerance, is found to meet the needs of various luminescent processes. Almost all luminescent modes, including down/up‐conversion luminescence (DCL/UCL), long persistent luminescence (LPL), mechanoluminescence (ML), and X‐ray excited optical luminescence (XEOL), are realized in this single host. Full‐spectrum (from violet to near‐infrared) photoluminescence and ML as well as multicolor XEOL are achieved by simply changing the doped luminescent center. A series of anti‐counterfeiting devices, including the quasi‐dynamic display of famous paintings, digital information encryption, and multi‐color handwritten signatures, are designed to show the encryption of information in temporal and spatial dimensions. This study clarifies the importance of defect tolerance of the host for the development of MML materials, and provides a unique insight into the cross‐field applications of special functional materials, which is a new strategy to accelerate the development of novel MML materials.
Stretchable Multimodal Photonic Sensor for Wearable Multiparameter Health Monitoring
Authors: Guo Jingjing , Tuo Jialin , Sun Jiangtao , Li Zhuozhou , Guo Xiaoyan , Chen Yanyan , Cai Rong , Zhong Jing , Xu Lijun 
Published: December 2024

AbstractStretchable sensors that can conformally interface with the skins for wearable and real‐time monitoring of skin deformations, temperature, and sweat biomarkers offer critical insights for early disease prediction and diagnosis. Integration of multiple modalities in a single stretchable sensor to simultaneously detect these stimuli would provide a more comprehensive understanding of human physiology, which, however, has yet to be achieved. Here, this work reports, for the first time, a stretchable multimodal photonic sensor capable of simultaneously detecting and discriminating strain deformations, temperature, and sweat pH. The multimodal sensing abilities are enabled by realization of multiple sensing mechanisms in a hydrogel‐coated polydimethylsiloxane (PDMS) optical fiber (HPOF), featured with high flexibility, stretchability, and biocompatibility. The integrated mechanisms are designed to operate at distinct wavelengths to facilitate stimuli decoupling and employ a ratiometric detection strategy for improved robustness and accuracy. To simplify sensor interrogation, spectrally‐resolved multiband emissions are generated upon the excitation of a single‐wavelength laser, utilizing upconversion luminescence (UCL) and radiative energy transfer (RET) processes. As proof of concept, this work demonstrates the feasibility of simultaneous monitoring of the heartbeat, respiration, body temperature, and sweat pH of a person in real‐time, with only a single sensor.