Search Results (6,072)

Silk fibroin (SF) has evolved from a traditional biopolymer to a leading regenerative medicine material. Its combination of mechanical strength, biocompatibility, tunable degradation, and molecular adaptability makes SF a unique matrix that is both bioactive and intelligent. Advances in hydrogel engineering have transformed SF from a passive scaffold into a smart, living hydrogel. These systems can instruct cell fate, sense microenvironmental signals, and deliver therapeutic signals as needed. By incorporating stem cells, progenitors, or engineered immune and microbial populations, SF hydrogels now serve as synthetic niches for organoid maturation and as adaptive implants for tissue regeneration. These platforms replicate extracellular matrix complexity and evolve with tissue, showing self-healing, shape-memory, and stimuli-responsive properties. Such features are redefining biomaterial–cell interactions. SF hydrogels are used for wound healing, musculoskeletal repair, neural and cardiac patches, and developing scalable organoid models for disease and drug research. Challenges remain in maintaining long-term cell viability, achieving clinical scalability, and meeting regulatory standards. This review explores how advances in SF engineering, synthetic biology, and organoid science are enabling SF-based smart living hydrogels in bridging the gap between research and clinical use. Full article

Estimated climate change scenarios demand robust coffee cultivars tolerant to supra-optimal temperatures, water deficit, diseases, and other stresses. Wild Coffea species represent important genetic resources for resilience. The study of variations in morphological structures associated with transpiration control, such as stomata, represents an important approach for identifying genotypes with greater stress tolerance. This study evaluated stomatal density and morphology in 48 wild accessions, 24 of Coffea racemosa and 24 of C. zanguebariae, from provinces of Mozambique. Leaf samples provided microscopic images to assess stomatal traits: density (SD), polar diameter (PD), equatorial diameter (ED), stomatal functionality (SF), and leaf dry mass. Principal components were analyzed for all 48 accessions and separately by species. Mean distribution independence was tested with the Mann–Whitney test (p < 0.05). Results revealed inter- and intraspecific variation. The ability to distinguish accessions varies with the set of traits and species. A significant negative correlation between ED and SF was shared by both species, suggesting a conserved functional pattern. This study discusses the differences in stomatal traits between wild and commercial coffee species and aspects related to possible alterations of stomatal structures during their adaptation to climate change. Additionally, it points to accessions with potential use in genetic breeding programs to increase stomatal function and the possible adaptation of new cultivars. Full article

Accurate and nondestructive monitoring of tomato growth is essential for large-scale greenhouse production; however, it remains challenging for small-fruited cultivars such as cherry tomatoes. Traditional 2D image analysis often fails to capture precise morphological traits, limiting its usefulness in growth modeling and yield estimation. This study proposes an automated phenotyping framework that integrates deep learning-based instance segmentation with high-resolution 3D point cloud reconstruction and ellipsoid fitting to estimate fruit size and ripeness from daily video recordings. These techniques enable accurate camera pose estimation and dense geometric reconstruction (via SfM and MVS), while Nerfacto enhances surface continuity and photorealistic fidelity, resulting in highly precise and visually consistent 3D representations. The reconstructed models are followed by CIELAB color analysis and logistic curve fitting to characterize the growth dynamics. When applied to real greenhouse conditions, the method achieved an average size estimation error of 8.01% compared to manual caliper measurements. During summer, the maximum growth rate (g_max) of size and ripeness were 24.14%, and 95.24% higher than in winter, respectively. Seasonal analysis revealed that winter-grown tomatoes matured approximately 10 days later than summer-grown fruits, highlighting environmental influences on phenological development. By enabling precise, noninvasive tracking of size and ripeness progression, this approach is a novel tool for smart and sustainable agriculture. Full article

Due to the large emissions of greenhouse gases from the burning of fossil fuels and people’s demand for green materials and energy, the development of environmentally friendly triboelectric nanogenerators (TENGs) is becoming increasingly significant. Silk fibroin (SF) is considered an ideal biopolymer candidate for fabricating green TENGs due to its biodegradability and renewability. However, its intrinsic brittleness and relatively weak triboelectric performance severely limit its practical applications. In this study, SF was physically blended with poly(ethylenimine) (PEI), a polymer rich in amino groups, to fabricate SF/PEI composite films. The resulting films were employed as tribopositive layers and paired with a poly(tetrafluoroethylene) (PTFE) tribonegative layer to assemble high-performance TENGs. Experimental results revealed that the incorporation of PEI markedly enhanced the flexibility and electron-donating capability of composite films. By optimizing the material composition, the SF/PEI-based TENG achieved an open-circuit voltage as high as 275 V and a short-circuit current of 850 nA, with a maximum output power density of 13.68 μW/cm². Application tests demonstrated that the device could serve as an efficient self-powered energy source, capable of lighting up 66 LEDs effortlessly through simple hand tapping and driving small electronic components such as timers. In addition, the device can function as a highly sensitive self-powered sensor, capable of generating rapid and distinguishable electrical responses to various human motions. This work not only provides an effective strategy to overcome the intrinsic limitations of SF-based materials but also opens up new avenues for the development of high-performance and environmentally friendly technologies for energy harvesting and sensing. Full article

The red-haired bark beetle (RHB), Hylurgus ligniperda (Fabricius, 1787) (Coleoptera: Curculionidae: Scolytinae), is a globally distributed quarantine pest, making effective management of infested wood essential. This study developed an integrated control system to achieve closed-loop management under various environmental and wood conditions. RHB eggs were the most fumigation-tolerant stage. Although sulfuryl fluoride (SF) showed higher potency, aluminum phosphide (AP) provided deeper penetration into wood (AP: 29.5% vs. SF: 12.6%). Both fumigants effectively reached all logs in the stacks. Fumigation efficacy was highest at moderate temperatures (18–22 °C) and lower wood moisture levels. In addition to chemical methods, thermal treatments were evaluated: heating to 60–65 °C achieved complete mortality, while effective freezing control required temperatures of −30 °C. For bark and chip debris generated during processing, beta-cypermethrin fumigation effectively eliminated residual pests. Our results confirm that both AP and SF are suitable for disinfecting infested Pinus thunbergii wood, that extreme temperatures can reduce dispersal risks, and that beta-cypermethrin is effective in the downgraded utilization of wood byproducts. This work provides a comprehensive and practical framework for controlling the spread of this invasive pest. Full article

Background: Stress urinary incontinence (SUI) is the involuntary loss of urine during increased abdominal pressure, affecting 46% of adult women, particularly those over 40. Pelvic floor muscle (PFM) training is the first-line treatment supported by numerous high-quality studies. However, the effectiveness of biofeedback devices, such as vaginal weight cones, remains controversial. Peflex weights are a new type of vaginal extracorporeal weights developed for PFM training. Aims: To evaluate the effectiveness of PFM training with Peflex weights in reducing SUI symptoms, improving muscle power and endurance, and comparing its efficacy to standard PFM training without weights. Methods: A pilot randomized controlled trial was conducted involving 35 women aged 18 to 50 diagnosed with SUI. Participants were randomly assigned to either the Peflex group (PFM training with Peflex weights) or the control group (PFM training without weights). Both groups engaged in six weeks of home-based training. The primary outcome was assessed using the self-reported International Consultation on Incontinence Questionnaire-Short Form (ICIQ-UI-SF). Secondary outcomes included evaluations based on the PERFECT scheme, perineometer measurements, and levator hiatus diameters obtained via ultrasound. Results: In the intragroup analysis, the Peflex group significantly improved all outcome measurements. Compared to the control group, the Peflex group demonstrated significantly higher improvement in muscle power and repetition of muscle contraction (p = 0.015 and p = 0.007, respectively), as well as in the proportional change in levator hiatus contraction (p = 0.022). There was no significant difference in the improvement in ICIQ-UI-SF and perineometer measurements between the groups (p > 0.05). Additionally, there was a trend of higher satisfaction with the treatment in the Peflex group (p = 0.054). Conclusions: Peflex weights effectively reduce SUI symptoms and improve muscle power and endurance, with high user satisfaction. However, there was no significant difference in the main outcome measure (ICIQ-UI-SF) between the Peflex and control groups. Further research is needed to identify which patients benefit most from this treatment. Full article

Three-dimensional concrete printing (3DCP) requires mixtures that develop sufficient early buildability while preserving open time for reliable interlayer bonding. This study investigates the time-dependent evolution of static yield stress for printable concretes incorporating three supplementary cementitious materials—metakaolin (MK), silica fume (SF), and biochar (BC)—used with either a polycarboxylate ether- (PCE) or naphthalene-based superplasticizer. Static yield stress was measured at 15, 30, and 45 min of concrete age using the stress-growth method with a shear vane apparatus. Performance targets were τ_s (15 min) ≤ 2.8 kPa, reflecting extrudability/pumpability; τ_s (30 min) ≤ 3.1 kPa, representing printability/open time; and τ_s (45 min) ≥ 3.4 kPa, representing buildability. Pooled Type-II ANOVA showed a highly significant SP effect (p < 0.001), a significant SCM × SP interaction (p = 0.031), and a significant time effect (p = 0.005), whereas SCM (p = 0.709) and SCM% (p = 0.914) were non-significant once interaction and time were included. Across SCMs, SNF–PCE gaps are ~0.2–0.8 kPa at 30 min (+7–30%) and ~0.4–1.3 kPa at 45 min (+12–45%), with the largest gaps in SF, intermediate in MK, and smallest in BC. Full article

Silica fume (SF) is extensively utilized for enhancing concrete properties. This study examines the impact of SF dosage on concrete frost resistance. Specimens were produced by replacing cement with SF at 5%, 10%, 20%, and 30% ratios. Mechanical testing and microscopic characterization measured variations in mass loss, relative dynamic elastic modulus, flexural strength, hydration products, and pore structure. Digital image correlation tracked failure development during flexural tests. Results indicated that SF-modified concrete showed lower mass loss, better elastic modulus retention, and improved flexural strength maintenance compared to plain concrete after identical freeze–thaw (F-T) cycles. Additionally, SF-modified concrete demonstrated reduced crack widths and slower crack expansion during bending. The 10% SF mixture, after 300 cycles, achieved optimal results characterized by 2.83% mass loss, 88.1% relative dynamic modulus, and only a 17% flexural strength reduction. Microscopic studies confirm that SF addition increases calcium silicate hydrate formation, decreases calcium hydroxide levels, and refines pore structure with higher density. These modifications enhance frost resistance. A service-life prediction model using gray model approach methodology projected that 10% SF concrete would last 2.01 times longer than unmodified concrete under F-T exposure. Full article

This study addresses the challenges of efficiency and cost in traditional sulfur hexafluoride (SF₆) degradation methods and the throughput limitations of common plasma technologies, with the aim of promoting sustainable treatment of potent greenhouse gases. A method of premixing SF₆ with plasma media before entering the plasma discharge region was employed to systematically investigate the effects of three atmospheres—nitrogen, air, and hydrogen—on the degradation efficiency, product distribution, and energy efficiency of SF₆. An experimental setup was constructed, and Gibbs free energy minimization simulations were conducted to analyze the degradation performance under different conditions. The results show that the premixed gas injection method achieves a degradation removal efficiency of over 99.84% when the SF₆ flow rate is lower than 4 slm, which is significantly better than the staged mixing method. When the discharge current increases from 40 A to 100 A, the degradation effect of SF₆ improves significantly, but the improvement becomes marginal when the current is further increased to 120 A. Compared with nitrogen, air and hydrogen atmospheres can effectively enhance the degradation removal rate, with the air atmosphere achieving the highest energy yield of 271 g/kWh. This research reveals the regulatory mechanism of medium components on SF₆ degradation, providing a theoretical basis for the sustainable, full-process treatment of industrial-scale reactors and contributing to the mitigation of greenhouse gas emissions. Full article

The nutritional composition of commercially valuable crabs is governed by a complex interplay of hereditary factors, growth environment, developmental stage and feed composition. In this study, the nutritional characteristics of edible tissues were quantitatively compared among four populations of Eriocheir sinensis: a non-selected group (NF), the G1 generation of the selective bred “King Crab 1” group (SF), the SF group with water quality regulated using microbiological agents (SF8) and a chilled-fish feeding group (CF). Growth metric analysis revealed that females in the SF group exhibited slightly superior growth performance compared to other groups. Amino acid analysis demonstrated that compared to the NF group, the content of essential and umami amino acids in the ovary was remarkably increased in the SF8 group. Additionally, the SF and CF groups exhibited elevated contents of flavor amino acids in male crabs. Moreover, the CF group exhibited the highest contents of EPA and DHA, and the highest n-3/n-6 PUFAs ratio, with the SF group following. Overall, although the G1 generation of selectively bred crabs demonstrated improved nutritional indicators compared to the unselected group, they still lagged behind the CF group in several aspects. These findings provide valuable insights and data support for future breeding strategies. Full article

Background: Malnutrition among older adults in China demands greater attention due to its significant implications for both health and functional ability. However, the relationship between nutritional status and health-related quality of life (HRQoL), especially in the context of chronic diseases, remains underexplored in the Chinese elderly population. Methods: This large-scale cross-sectional study aimed to evaluate the association between nutritional status and HRQoL, stratified by chronic disease status, among 41,859 community-dwelling adults aged ≥ 65 years from 31 provinces in mainland China. Nutritional status was assessed using the Mini Nutritional Assessment (MNA), while HRQoL was measured using the SF-36 questionnaire; chronic disease status was based on physician diagnosis. Multiple linear regression was employed to examine the association between MNA and HRQoL, with subgroups defined by Latent Class Analysis (LCA) based on comorbidity patterns. Results: Results revealed significant positive associations between MNA scores and SF-36 total and domain scores among participants with chronic diseases (e.g., Total: β = 0.32, 95% CI: 0.04–0.60), but not among those without chronic diseases. LCA identified four comorbidity patterns: cardiovascular-rich, metabolic-rich, musculoskeletal-rich, and relatively healthy. Significant MNA-HRQoL associations were found in the cardiovascular (β = 0.58, p = 0.025), metabolic (β = 0.76, p = 0.022), and musculoskeletal (β = 1.01, p = 0.021) groups, but not in the relatively healthy group. Conclusions: These findings underscore the critical role of nutritional status in HRQoL among Chinese older adults with chronic diseases and highlight the need for tailored nutritional interventions in geriatric chronic disease management. Full article

Metabolic dysfunction-associated steatotic liver disease (MASLD) is the most prevalent chronic liver condition globally, driven by strong genetic and environmental components. This review summarizes recent advances in understanding the genetic architecture of MASLD. Genome-wide association studies (GWAS) have identified several key risk variants, primarily in genes such as PNPLA3, TM6SF2, GCKR, and MBOAT7, which influence hepatic lipid metabolism and disease progression. By utilizing surrogate markers of MASLD, researchers have also identified numerous putative MASLD-associated genes, warranting further investigation through functional genomics approaches. Next-generation sequencing techniques have uncovered rare variants in genes like APOB and ABCB4, as well as protective variants in HSD17B13 and CIDEB. This review discusses the potential of polygenic risk scores for disease stratification and the development of genetically informed therapeutic strategies. Additionally, it explores the future of functional genomics approaches in discovering novel treatment strategies. While the evolving genetic landscape of MASLD provides promising insights for precision medicine approaches in diagnosis, prognosis, and treatment, significant translational gaps remain. Addressing these challenges will be critical for realizing the full potential of personalised approaches in clinical management. This review synthesizes these findings and discusses their implications for future research and clinical practice in MASLD. Full article

Background/Objectives: The aging global population has led to a rising prevalence of type 2 diabetes mellitus (T2DM), in which biomedical outcomes alone fail to capture patients’ lived experiences. Patient-Reported Outcome Measures (PROMs) can provide insights into psychological, psychosocial, and quality-of-life (QoL) dimensions, yet their use—particularly among older adults—remains inconsistent. This AI-assisted rapid review aimed to map how PROMs are currently applied in adults with T2DM, with specific attention to studies involving older populations, focusing on their role in assessing well-being, distress, depression, and treatment satisfaction, as well as their implementation in clinical and organizational practice. Methods: A rapid review was conducted using Elicit, an AI tool designed to support systematic evidence synthesis. Studies published between 2015 and 2025 were identified from Semantic Scholar, complemented by manual searches for recent or unindexed papers. Eligibility criteria required inclusion of adults with T2DM and use of validated PROMs in real-world settings. Studies explicitly describing older or elderly subgroups were highlighted separately. After screening 504 records, 167 studies were included. Data extraction covered study design, instruments used, populations, outcomes, and implementation details. Results: The most frequently assessed outcomes were diabetes distress, depression, QoL, treatment satisfaction, and self-efficacy. Common instruments included PAID, DDS, PHQ-9, WHO-5, EQ-5D, SF-36, DTSQ, and GDS. Evidence showed PROMs effectively identified high-risk patients and informed tailored interventions, but integration into routine care remained limited. Barriers included workflow disruption, lack of provider training, heterogeneity of tools, and insufficient cultural validation. Facilitators included brief instruments, digital administration, and linkage with care planning. Conclusions: PROMs are valuable in capturing psychosocial and psychological burdens in adults with T2DM, including but not limited to older populations, but routine implementation is inconsistent. Broader adoption will require digital infrastructure, clinician training, and organizational integration, as well as the development of PROMs that capture experiences with emerging diabetes technologies. Methodologically, this study illustrates the feasibility of AI-assisted rapid reviews to generate timely, evidence-informed syntheses. Full article

Lumbar disk herniation is a common cause of pain in people older than 30, often associated with workload, where the therapeutic approach includes different methods of treatment; therefore, the aim of the study was to inspect the effectiveness of different methods of treating pain caused by lumbar disk herniation in relation to pro-inflammatory and anti-inflammatory parameters before and after two weeks of therapy. There were twenty-eight participants with a diagnosis confirmed by a specialist who also assigned the participant to a clinically appropriate type of treatment. Pain and disability were assessed using the SF-MPQ and ODI (Title: Immune Response During the Conservative and Minimal Invasive Treatment of Pain Caused by Lumbar Disc Herniation, Clinical Trials Number (NCT06545812), Initial Release 23 July 2024, Last Release 27 August 2025). In addition to the above questionnaires, serum samples were collected before and after therapy for analysis of inflammatory biomarkers. Although there was no statistically significant difference, the tendency of decreases in IL-1 beta and IL-8 in the median levels (interquartile range) was observed after conservative treatment. The results indicate role of inflammatory mechanisms in the treatment of disk herniation and support the benefits of a conservative approach through the regulation of pain, disability, and cytokine activity. Full article

Background: The construct of positive mental health (PMH) is defined as the basis of individuals’ psychological well-being and their ability to function effectively and cope with life’s challenges. The Positive Mental Health Questionnaire (PMHQ) is a reliable tool for assessing the PMH factors, but its length (39 items) can pose challenges in certain contexts and populations. This highlights the need for an abridged version of the questionnaire that requires less time to administer. Therefore, the main aim was to validate the Spanish 18 item-shortened version of the PMHQ (PMHQ-SF18). Methods: The sample consisted of 574 nursing students. Psychometric analyses were carried out based on construct validity, criterion validity, and internal consistency. A confirmatory factor analysis was conducted to ascertain whether the internal structure was consistent with the model of the previously validated Portuguese brief version. Results: The results supported the good psychometric properties of the instrument, with adequate validity and reliability. Confirmatory factor analysis revealed optimal goodness-of-fit values, supporting the six-factor structure. The overall Cronbach’s alpha was 0.83. Conclusions: The findings suggest that the PMHQ-SF18 is a valid and reliable instrument, comparable to the original version, but with the added benefits of being shorter, quicker, and easier to administer. Consequently, it may be particularly useful for population-based screening studies and for monitoring change following positive mental health promotion interventions. Its abridged format makes it particularly suitable for assessing individuals with specific characteristics or in contexts where time is limited, and more concise instruments are required, for example, in primary care or critical care. Full article