Sign in to use this feature.

Years

Between: -

Subjects

remove_circle_outline
remove_circle_outline
remove_circle_outline
remove_circle_outline
remove_circle_outline
remove_circle_outline
remove_circle_outline
remove_circle_outline
remove_circle_outline

Journals

Article Types

Countries / Regions

Search Results (127)

Search Parameters:
Keywords = Sarda

Order results
Result details
Results per page
Select all
Export citation of selected articles as:
15 pages, 1391 KiB  
Article
Valorization of Food By-Products: Formulation and Evaluation of a Feed Complement for Broiler Chickens Based on Bonito Fish Meal and Única Potato Peel Flour
by Ashley Marianella Espinoza Davila and Rebeca Salvador-Reyes
Resources 2025, 14(8), 125; https://doi.org/10.3390/resources14080125 - 1 Aug 2025
Viewed by 227
Abstract
Restaurants and open markets generate considerable quantities of organic waste. Converting these residues into poultry feed ingredients offers a sustainable disposal route. This study aimed to evaluate the nutritional and sensory viability of a novel feed complement formulated from Bonito fish meal ( [...] Read more.
Restaurants and open markets generate considerable quantities of organic waste. Converting these residues into poultry feed ingredients offers a sustainable disposal route. This study aimed to evaluate the nutritional and sensory viability of a novel feed complement formulated from Bonito fish meal (Sarda chiliensis chiliensis) and Única potato peel flour (Solanum tuberosum L. cv. Única). This study was conducted in three phases: (i) production and nutritional characterization of the two by-product flours; (ii) formulation of a 48:52 (w/w) blend, incorporated into broiler diets at 15%, 30%, and 45% replacement levels over a 7-week trial divided into starter (3 weeks), grower (3 weeks), and finisher (1 week) phases; and (iii) assessment of growth performance (weight gain, final weight, and feed conversion ratio), followed by a sensory evaluation of the resulting meat using a Check-All-That-Apply (CATA) analysis. The Bonito fish meal exhibited 50.78% protein, while the Única potato peel flour was rich in carbohydrates (74.08%). The final body weights of broiler chickens ranged from 1872.1 to 1886.4 g across treatments, and the average feed conversion ratio across all groups was 0.65. Replacing up to 45% of commercial feed with the formulated complement did not significantly affect growth performance (p > 0.05). Sensory analysis revealed that meat from chickens receiving 15% and 45% substitution levels was preferred in terms of aroma and taste, whereas the control group was rated higher in appearance. These findings suggest that the formulated feed complement may represent a viable poultry-feed alternative with potential sensory and economic benefits, supporting future circular-economy strategies. Full article
Show Figures

Figure 1

12 pages, 1176 KiB  
Article
Effect of Different Extenders on the Oxidative Status and Fertility of Sarda Ram Liquid Semen Stored at 15 °C
by Pasciu Valeria, Charbel Nassif, Maria Dattena, Sara Succu, Francesca Daniela Sotgiu, Antonello Cannas, Ignazio Cossu, Elena Baralla, Fabrizio Chessa, Fiammetta Berlinguer and Laura Mara
Antioxidants 2025, 14(8), 932; https://doi.org/10.3390/antiox14080932 - 30 Jul 2025
Viewed by 249
Abstract
Liquid storage is an important tool used to prolong fresh semen shelf-life while protecting spermatozoa from damage, conserving their overall functionality, and ensuring better fertility than frozen semen from sheep. The increased production of reactive oxygen species (ROS) during sperm storage leads to [...] Read more.
Liquid storage is an important tool used to prolong fresh semen shelf-life while protecting spermatozoa from damage, conserving their overall functionality, and ensuring better fertility than frozen semen from sheep. The increased production of reactive oxygen species (ROS) during sperm storage leads to a decline in sperm quality, particularly with regard to sperm nuclear DNA damage and mitochondrial membrane potential (MMP). This study evaluated the effect of storing Sarda ram semen at 15 °C for 7 h on its redox status, motility, morphology, acrosome integrity, ATP content, mitochondrial potential membrane, and in vivo fertility after artificial insemination. Two different extenders were compared: a lab-made skimmed milk (SM)-based extender and a commercial extender (OviXcell®, IMV-Technologies, France). Lower ROS levels in the SM (p < 0.001) indicated that its oxidative status was better maintained compared to the commercial extender (CE). Antioxidant defenses (total antioxidant capacity, TEAC; superoxide dismutase, SOD; total thiols) were higher in the SM (p < 0.01) than in the CE. SM also had higher MMP (p < 0.05), acrosome integrity (p < 0.05), ATP content (p < 0.01), and in vivo fertilizing capacity (p < 0.05) compared to the CE, which indicated higher semen quality. In conclusion, the SM extender, while maintaining a better oxidative/antioxidant balance, ensured higher semen quality after 7 h of storage at 15 °C in vitro compared to the CE. Full article
Show Figures

Figure 1

16 pages, 755 KiB  
Review
Hip Fracture as a Systemic Disease in Older Adults: A Narrative Review on Multisystem Implications and Management
by Silvia Andaloro, Stefano Cacciatore, Antonella Risoli, Rocco Maria Comodo, Vincenzo Brancaccio, Riccardo Calvani, Simone Giusti, Mathias Schlögl, Emanuela D’Angelo, Matteo Tosato, Francesco Landi and Emanuele Marzetti
Med. Sci. 2025, 13(3), 89; https://doi.org/10.3390/medsci13030089 - 11 Jul 2025
Viewed by 692
Abstract
Hip fractures are among the most serious health events in older adults, frequently leading to disability, loss of independence, and elevated mortality. In 2019, an estimated 9.6 million new cases occurred globally among adults aged ≥ 55 years, with an incidence rate of [...] Read more.
Hip fractures are among the most serious health events in older adults, frequently leading to disability, loss of independence, and elevated mortality. In 2019, an estimated 9.6 million new cases occurred globally among adults aged ≥ 55 years, with an incidence rate of 681 per 100,000. Despite improved surgical care, one-year mortality remains high (15–30%), and fewer than half of survivors regain their pre-fracture functional status. Traditionally regarded as mechanical injuries, hip fractures are now increasingly recognized as systemic events reflecting and accelerating biological vulnerability and frailty progression. We synthesize evidence across biological, clinical, and social domains to explore the systemic implications of hip fracture, from the acute catabolic response and immune dysfunction to long-term functional decline. The concept of intrinsic capacity, introduced by the World Health Organization, offers a resilience-based framework to assess the multidimensional impact of hip fracture on physical, cognitive, and psychological function. We highlight the importance of orthogeriatric co-management, early surgical intervention, and integrated rehabilitation strategies tailored to the individual’s functional reserves and personal goals. Innovations such as digital health tools, biological aging biomarkers, and personalized surgical approaches represent promising avenues to enhance recovery and autonomy. Ultimately, we advocate for a shift toward interdisciplinary, capacity-oriented models of care that align with the goals of healthy aging and enable recovery that transcends survival, focusing instead on restoring function and quality of life. Full article
Show Figures

Figure 1

20 pages, 1310 KiB  
Article
The Use of NIR Spectroscopy and Chemometrics to Identify the Thermal Treatment of Milk in Fiore Sardo PDO Cheese to Detect Fraud
by Marco Caredda, Alessio Silvio Dedola, Massimo Pes and Margherita Addis
Foods 2025, 14(13), 2288; https://doi.org/10.3390/foods14132288 - 27 Jun 2025
Viewed by 307
Abstract
The production of Fiore Sardo cheese is regulated by the specification of the Protected Designation of Origin (PDO), which aims to guarantee the specific area of production, the know-how of local producers, and the specific use of raw milk from Sarda sheep. The [...] Read more.
The production of Fiore Sardo cheese is regulated by the specification of the Protected Designation of Origin (PDO), which aims to guarantee the specific area of production, the know-how of local producers, and the specific use of raw milk from Sarda sheep. The thermization of milk is a sub-pasteurization process that is commonly used in cheese-making to lower the bacterial load and increase the shelf life of the product; it is therefore a cause of non-compliance with the PDO specification of Fiore Sardo cheese, allowing producers to gain practical and economic advantages. In this work, NIR spectroscopy coupled with multivariate discriminant analysis was used to identify the thermal treatment of milk in Fiore Sardo cheese samples. Cheeses were produced using raw milk (38 °C), low-thermized milk (57 °C for 30 s), and high-thermized milk (68 °C for 30 s). The NIR spectra of the cheeses were used to build discriminant models for individuating the thermal treatment of the processed milk. The obtained discriminant models were able to correctly classify about 90% of the Fiore Sardo cheese samples. This method could be suitable as a screening technique to authenticate Fiore Sardo PDO cheese. Full article
Show Figures

Figure 1

4 pages, 175 KiB  
Editorial
The Power of Databases in Unraveling the Nutrition–Health Connection
by Andreu Farran-Codina and Mireia Urpí-Sardà
Nutrients 2025, 17(10), 1725; https://doi.org/10.3390/nu17101725 - 20 May 2025
Viewed by 292
Abstract
Human activities across different sectors produce large volumes of relevant nutritional information [...] Full article
(This article belongs to the Special Issue Databases, Nutrition and Human Health)
13 pages, 748 KiB  
Article
Influence of Dietary Intake on Carotid Maximum Intima–Media Thickness in Children Conceived Through Assisted Reproductive Techniques
by Blanca Barrau-Martinez, Mireia Termes-Escalé, Brenda Valenzuela-Alcaraz, Rafael Llorach, Andreu Farran-Codina, Alba Tor-Roca, Eduard Gratacós, Fatima Crispi and Mireia Urpi-Sarda
Nutrients 2025, 17(7), 1189; https://doi.org/10.3390/nu17071189 - 28 Mar 2025
Viewed by 492
Abstract
Background/Objectives: Research on the relationship between nutritional characteristics and their impact on cardiovascular remodeling in children conceived by assisted reproductive technology (ART) is limited. We aimed to explore the influence of postnatal nutrition on vascular wall thickness in children conceived through ART, [...] Read more.
Background/Objectives: Research on the relationship between nutritional characteristics and their impact on cardiovascular remodeling in children conceived by assisted reproductive technology (ART) is limited. We aimed to explore the influence of postnatal nutrition on vascular wall thickness in children conceived through ART, comparing them with a naturally conceived control group. Methods: A prospective observational cohort of 3-year-old children (n = 83) was analyzed, including 41 conceived ART and 42 spontaneously conceived. The carotid maximum intima–media thickness (max-cIMT), a strong predictor of myocardial infarction, was measured and dietary intake was assessed through 3-day food records. Dietary data were compared between groups, and the relationship between nutritional intake and max-cIMT were explored. In the ART group, the k-means clustering method identified distinct dietary patterns. Results: ART children showed significantly higher max-cIMT values, as well as increased dietary intake of saturated fatty acids (SFA), total proteins, and animal proteins compared to those spontaneously conceived. Three cluster groups were identified based on dietary intake in the ART group; those ART children whose dietary pattern closely resembled the control group exhibited lower max-cIMT values. Conclusions: Our findings suggest that ART children exhibited a distinct dietary pattern characterized by higher consumption of total and animal proteins and SFA, compared to those conceived naturally. Further research is required to unravel the interindividual differences among individuals conceived through ART, enabling the formulation of precise nutritional recommendations for personalized nutrition and preventive medicine. Full article
(This article belongs to the Section Pediatric Nutrition)
Show Figures

Graphical abstract

26 pages, 6906 KiB  
Article
Farmer’s Perception of Climate Change and Factors Determining the Adaptation Strategies to Ensure Sustainable Agriculture in the Cold Desert Region of Himachal Himalayas, India
by Pankaj Kumar, Rajesh Sarda, Ankur Yadav, Ashwani, Barbaros Gonencgil and Abhinav Rai
Sustainability 2025, 17(6), 2548; https://doi.org/10.3390/su17062548 - 14 Mar 2025
Viewed by 1390
Abstract
Agricultural practices in the cold desert region of the Himalayas are frequently affected by climate-induced uncertainty in the past few decades. This research work aimed to examine the following questions: (a) Are there any significant climatic changes in the cold desert region of [...] Read more.
Agricultural practices in the cold desert region of the Himalayas are frequently affected by climate-induced uncertainty in the past few decades. This research work aimed to examine the following questions: (a) Are there any significant climatic changes in the cold desert region of Himachal Himalayas? (b) How do the local farmers perceive climate change? (c) What and how indigenous and modern climate sensitive resilience measures/practices are being adapted by farmers for risk mitigation? A modified Mann–Kendall (m-MK) test and anomaly index were used to examine the changes in climatic variables over the cold desert region. Data on the observed changes in climatic variables were investigated through gridded products provided by the Indian Meteorological Department (IMD) and farmer perception, and their adaptation measures were collected by an extensive primary survey using a semi-structured questionnaire. The results indicate that farmers’ perceptions of changing rainfall, temperature, and seasons were consistent with historical climatic data. The drying water resources and crop damage were the most pressing concerns for farmers due to climate change activity. The farmers are adapting to climate change by altering their farming practices for agricultural risk management. The binary logistics regression (BLR) model was used to investigate the influence of different variables on the adopting farmer’s decision. The result revealed that various factors like landholding size, accessibility of transport, awareness of climate change, availability of water, and distance from market were responsible for choosing suitable climate resilience adaptation measures. This research contributes to recalibrating appropriate strategies across the cold desert region for designing sustainable agricultural practices. Full article
Show Figures

Figure 1

28 pages, 5454 KiB  
Article
Comparative Analysis of Real-Time Fluorescence-Based Spectroscopic Instruments: Bioaerosol Detection in the Urban Environment of Dublin City, Ireland
by Jerry Hourihane Clancy, Emma Markey, Moisés Martínez-Bracero, José María Maya-Manzano, Eoin J. McGillicuddy, Gavin Sewell, Roland Sarda-Estève, Dominique Baisnée, Andrés M. Vélez-Pereira, Gemma Davis and David J. O’Connor
Atmosphere 2025, 16(3), 275; https://doi.org/10.3390/atmos16030275 - 26 Feb 2025
Viewed by 1063
Abstract
Primary Biological Aerosol Particles (PBAPs) range in size from a few nanometres to hundreds of micrometres and include particles such as pollen and fungal spores, which are significant due to their prevalence and potential to induce allergic reactions and other health-related issues. This [...] Read more.
Primary Biological Aerosol Particles (PBAPs) range in size from a few nanometres to hundreds of micrometres and include particles such as pollen and fungal spores, which are significant due to their prevalence and potential to induce allergic reactions and other health-related issues. This study employs real-time fluorescence spectroscopy devices, the Wideband Integrated Bioaerosol Sensor (WIBS-NEO) and IBAC-2, to monitor PBAPs in the urban environment of Dublin, Ireland, during a six-week campaign in the summer of 2019. The WIBS-NEO demonstrated moderate correlations (R2 = 0.5–0.7) in comparison with Hirst volumetric air sampler data for pollen and fungal spore concentrations following appropriate data filtering. In contrast, the IBAC-2 showed poor correlation with ambient fungal spore concentrations and lacked the necessary particle size ranges for reliable pollen measurement. Comparative analysis between WIBS-NEO and IBAC-2 revealed moderate correlation (R2 ≈ 0.6) for small fluorescent particles (fluorescent particles between 0.7 and 1.5 μm optical diameter) but lower correlation for larger particles and specific bioaerosol types. The findings suggest that while the WIBS-NEO is effective for real-time bioaerosol monitoring, further refinement is needed for IBAC-2. This study underscores the potential of using advanced real-time monitoring tools in urban environments and highlights the need for continued development to address current limitations. Full article
Show Figures

Figure 1

11 pages, 3079 KiB  
Case Report
Genicular Artery Embolization with Imipenem/Cilastatin for Pigmented Villonodular Synovitis of the Knee: A Case Report
by Matteo Cappucci, Riccardo Totti, Guido Bocchino, Rocco Maria Comodo, Giacomo Capece, Pierluigi Maria Rinaldi and Vincenzo De Santis
Surgeries 2025, 6(1), 14; https://doi.org/10.3390/surgeries6010014 - 21 Feb 2025
Viewed by 1204
Abstract
Background: Pigmented villonodular synovitis (PVNS) is a rare, proliferative disorder of the synovium that predominantly affects the knee. Traditional treatment involves surgical resection; however, the high recurrence rates have prompted the exploration of alternative, minimally invasive treatments. This case report presents the novel [...] Read more.
Background: Pigmented villonodular synovitis (PVNS) is a rare, proliferative disorder of the synovium that predominantly affects the knee. Traditional treatment involves surgical resection; however, the high recurrence rates have prompted the exploration of alternative, minimally invasive treatments. This case report presents the novel use of genicular artery embolization (GAE) with imipenem/cilastatin as a therapeutic intervention. Case presentation: We present a case of a 52-year-old male with a 5-month history of progressive left-knee pain and swelling. Magnetic resonance imaging (MRI) suggested PVNS, which was confirmed through synovial biopsy. Because of concerns about surgical recovery and recurrence risk, the patient opted for GAE with imipenem/cilastatin over traditional synovectomy. This technique, employing the antibiotic’s anti-angiogenic and anti-inflammatory properties, was administered under local anesthesia without complications. Results: Post-procedural assessments demonstrated rapid and sustained symptom relief. At the 1-month follow-up, the patient’s Visual Analog Scale (VAS) pain score decreased from 7/10 to 3/10, and their Knee Injury and Osteoarthritis Outcome Score (KOOS) and SF-36 health survey scores indicated significant functional improvement. By the 6-month follow-up, the VAS had reached 0/10; the KOOS value reflected near-complete functional recovery; and MRI confirmed reduced synovial hypertrophy and absence of recurrence. No complications were observed. Discussion: GAE with imipenem/cilastatin shows potential as an effective alternative to surgery for PVNS, particularly in patients at risk of surgical complications or recurrence. While the preliminary findings are promising, the limitations include the case’s single-subject design and the need for extended follow-up to determine long-term outcomes and recurrence rates. Further studies comparing GAE with traditional surgical approaches are needed to assess its broader applicability in PVNS management. Conclusion: GAE with imipenem/cilastatin offers a promising, minimally invasive approach for PVNS, providing significant symptom relief and functional recovery with minimal complications. Although long-term studies are needed, this technique could serve as a viable alternative for patients with PVNS, especially those contraindicated for surgery. Full article
Show Figures

Figure 1

16 pages, 839 KiB  
Article
Influence of Body Condition Score on Reproductive Recovery in Spring and on Some Hematochemical Parameters in Sarda Breed Sheep
by Sebastiano Luridiana, Mortadha Ouadday, Giovanni Cosso, Vincenzo Carcangiu and Maria Consuelo Mura
Animals 2025, 15(3), 372; https://doi.org/10.3390/ani15030372 - 28 Jan 2025
Viewed by 1182
Abstract
This study aimed to investigate the relationship between body condition score (BCS) and reproductive recovery in Sarda dairy breed ewes, as well as its association with some hematochemical parameters, focusing on the male effect as a method to induce out-of-season ovulation. The male [...] Read more.
This study aimed to investigate the relationship between body condition score (BCS) and reproductive recovery in Sarda dairy breed ewes, as well as its association with some hematochemical parameters, focusing on the male effect as a method to induce out-of-season ovulation. The male effect is commonly used in sheep farming as an alternative to hormonal treatments, but its success can be influenced by factors such as BCS. In this experiment, 200 healthy lactating ewes (aged 3–5 years) were divided into four groups based on BCS (2.0, 2.5, 3.0, and 3.5). BCS was measured on a 1–5 scale by touching the amounts of muscling and fat deposition in the loin region. On 15 May, 10 rams of proven fertility were introduced, and removed 50 days later. Blood samples were collected at days 15, 30, and 50 for glucose, cholesterol, triglycerides, total protein, and albumin analysis, along with BCS evaluations. Lambing dates, fertility rates, litter size, and the time from ram introduction to lambing were recorded. The results showed that ewes with a higher BCS (3.0 and 3.5) had improved fertility rates, earlier lambing, and a better overall reproductive performance compared to ewes with a lower BCS (2.0 and 2.5). Higher BCS groups also exhibited higher levels of glucose, cholesterol, and triglycerides. The study concluded that a BCS of 3.0 is optimal for reproductive efficiency in Sarda ewes during the male effect in spring, promoting better reproductive outcomes and animal welfare without the need for hormonal treatments. Full article
(This article belongs to the Section Animal Reproduction)
Show Figures

Figure 1

18 pages, 1712 KiB  
Article
Genomic Analysis of Sarda Sheep Raised at Diverse Temperatures Highlights Several Genes Involved in Adaptations to the Environment and Heat Stress Response
by Giustino Gaspa, Alberto Cesarani, Alfredo Pauciullo, Ilaria Peana and Nicolò P. P. Macciotta
Animals 2024, 14(24), 3585; https://doi.org/10.3390/ani14243585 - 12 Dec 2024
Cited by 2 | Viewed by 1337
Abstract
Livestock expresses complex traits influenced by several factors. The response of animals to variations in climatic factors, such as increases in temperature, may induce heat stress conditions. In this study, animals living at different temperatures were compared using the genome-wide Wright fixation index [...] Read more.
Livestock expresses complex traits influenced by several factors. The response of animals to variations in climatic factors, such as increases in temperature, may induce heat stress conditions. In this study, animals living at different temperatures were compared using the genome-wide Wright fixation index (FST). A total of 825 genotypes of Sarda breed ewes were divided into two groups based on the flocks’ average temperature over a 20-year period to compute the FST: 395 and 430 sheep were represented in colder and hotter groups, respectively. After LOWESS regression and CONTROL CHART application, 623 significant markers and 97 selection signatures were found. A total of 280 positional candidate genes were retrieved from a public database. Among these genomic regions, we found 51 annotated genes previously associated with heat stress/tolerance in ruminants (FCGR1A, MDH1, UGP2, MYO1G, and HSPB3), as well as immune response and cellular mechanisms related to how animals cope with thermal stress (RIPK1, SERPINB1, SERPINB9, and PELI1). Moreover, other genes were associated with milk fat (SCD, HERC3, SCFD2, and CHUK), body weight, body fat, and intramuscular fat composition (AGPAT2, ABCD2, MFAP32, YTHDC1, SIRT3, SCD, and RNF121), which might suggest the influence of environmental conditions on the genome of Sarda sheep. Full article
Show Figures

Figure 1

13 pages, 965 KiB  
Article
Real-World Study of US Adults with Paroxysmal Nocturnal Hemoglobinuria Treated with Pegcetacoplan
by Brian Mulherin, Apeksha Shenoy, Lily Arnett, Weiqi Jiao, Joseph Guarinoni, Sujata Sarda, Jinny Min and David Dingli
Hematol. Rep. 2024, 16(4), 669-681; https://doi.org/10.3390/hematolrep16040065 - 29 Oct 2024
Viewed by 1921
Abstract
Background: Paroxysmal nocturnal hemoglobinuria (PNH) is a rare, acquired, life-threatening disease characterized by complement-mediated hemolysis. OPERA is the first US longitudinal real-world study on C3 inhibitor therapy, known as pegcetacoplan. Methods: OPERA enrolled US patients with PNH, age ≥18, who were [...] Read more.
Background: Paroxysmal nocturnal hemoglobinuria (PNH) is a rare, acquired, life-threatening disease characterized by complement-mediated hemolysis. OPERA is the first US longitudinal real-world study on C3 inhibitor therapy, known as pegcetacoplan. Methods: OPERA enrolled US patients with PNH, age ≥18, who were prescribed pegcetacoplan, and data were collected from routine care. Hemoglobin was reported by patients during regular follow-up (censored from transfusions). The Functional Assessment of Chronic Illness Therapy (FACIT)-Fatigue (0–52 score) and Patient-Reported Outcomes Measurement Information System scale for Cognitive Function Abilities (PROMIS-CF; 23.27–67.09 t-score) were completed electronically (low score = negative outcome). Patients self-reported incidence of healthcare resource utilization (HCRU). Results: By January 2024, 70 patients (mean age 44.6 years; 57.1% female) reported up to 9 months of pegcetacoplan treatment, with a median [IQR] follow-up of 6.6 [3.8] months. The latest reported hemoglobin levels improved by a mean (SD) of 2.6 (1.9) g/dL from baseline. At 3, 6 and 9 months, patients reported clinically meaningful improvements (≥5 points) in FACIT-F (53.3–69.0%) and (≥2 points) PROMIS-CF (46.7–55.2%). Patients reported a <10% incidence rate per person month of all HCRU events. Conclusions: This first longitudinal real-world US study indicates a positive trend in Hb, fatigue, and cognition with limited HCRU during pegcetacoplan treatment in adults with PNH. Full article
Show Figures

Figure 1

15 pages, 5254 KiB  
Article
Comparative Analysis of Grass Pollen Dynamics in Urban and Rural Ireland: Identifying Key Sources and Optimizing Prediction Models
by Moisés Martínez-Bracero, Andrés M. Vélez-Pereira, Emma Markey, Jerry Hourihane Clancy, Roland Sarda-Estève and David J. O’Connor
Atmosphere 2024, 15(10), 1198; https://doi.org/10.3390/atmos15101198 - 8 Oct 2024
Viewed by 1744
Abstract
The Poaceae family, one of the most diverse and widespread angiosperms, is prevalent in various natural and urban environments and is a major cause of allergies, affecting over 20% of the population in Europe, specifically in Ireland. With extensive grasslands, Ireland supports numerous [...] Read more.
The Poaceae family, one of the most diverse and widespread angiosperms, is prevalent in various natural and urban environments and is a major cause of allergies, affecting over 20% of the population in Europe, specifically in Ireland. With extensive grasslands, Ireland supports numerous grass species, though pollen release varies due to the family’s complexity. The Hirst spore-trap is commonly used to sample airborne pollen, but the area of influence is debated and may differ by pollen type. This study compares grass pollen seasons between rural Carlow and urban Dublin, aiming to create forecast models for airborne pollen and identify key grass areas influencing the main pollen season (MPS). Two Hirst samplers were analyzed, using data up to 2020, and two threshold models (based on Swedish and Danish studies) were tested to find the best fit for Ireland. Airmass footprints were calculated using Hysplit and combined with grassland data to pinpoint major pollen sources. The results showed that Carlow had higher pollen concentrations but shorter seasons than Dublin. The Swedish threshold method was the most accurate for Ireland, with the Wicklow Mountains identified as a significant pollen source. These findings improve the understanding of pollen dynamics and support better public health and allergy management. Full article
(This article belongs to the Special Issue Atmospheric Bioaerosols: Detection, Characterization and Modelling)
Show Figures

Graphical abstract

31 pages, 29333 KiB  
Article
VARS and HDMR Sensitivity Analysis of Groundwater Flow Modeling through an Alluvial Aquifer Subject to Tidal Effects
by Javier Samper, Brais Sobral, Bruno Pisani, Alba Mon, Carlos López-Vázquez and Javier Samper-Pilar
Water 2024, 16(17), 2526; https://doi.org/10.3390/w16172526 - 5 Sep 2024
Viewed by 1432
Abstract
Groundwater flow and transport models are essential tools for assessing and quantifying the migration of organic contaminants at polluted sites. Uncertainties in the hydrodynamic and transport parameters of the aquifer have a significant effect on model predictions. Uncertainties can be quantified with advanced [...] Read more.
Groundwater flow and transport models are essential tools for assessing and quantifying the migration of organic contaminants at polluted sites. Uncertainties in the hydrodynamic and transport parameters of the aquifer have a significant effect on model predictions. Uncertainties can be quantified with advanced sensitivity methods such as Sobol’s High Dimensional Model Reduction (HDMR) and Variogram Analysis of Response Surfaces (VARS). Here we present the application of VARS and HDMR to assess the global sensitivities of the outputs of a transient groundwater flow model of the Gállego alluvial aquifer which is located downstream of the Sardas landfill in Huesca (Spain). The aquifer is subject to the tidal effects caused by the daily oscillations of the water level in the Sabiñánigo reservoir. Global sensitivities are analyzed for hydraulic heads, aquifer/reservoir fluxes, groundwater Darcy velocity, and hydraulic head calibration metrics. Input parameters include aquifer hydraulic conductivities and specific storage, aquitard vertical hydraulic conductivities, and boundary inflows and conductances. VARS, HDMR, and graphical methods agree to identify the most influential parameters, which for most of the outputs are the hydraulic conductivities of the zones closest to the landfill, the vertical hydraulic conductivity of the most permeable zones of the aquitard, and the boundary inflow coming from the landfill. The sensitivity of heads and aquifer/reservoir fluxes with respect to specific storage change with time. The aquifer/reservoir flux when the reservoir level is high shows interactions between specific storage and aquitard conductivity. VARS and HDMR parameter rankings are similar for the most influential parameters. However, there are discrepancies for the less relevant parameters. The efficiency of VARS was demonstrated by achieving stable results with a relatively small number of simulations. Full article
(This article belongs to the Section Hydrogeology)
Show Figures

Figure 1

14 pages, 1625 KiB  
Article
The Development and Validation of an LC–Orbitrap–HRMS Method for the Analysis of Four Tetracyclines in Milk and Its Application to Determine Oxytetracycline Concentrations after Intramuscular Administration in Healthy Sarda Ewes and Those Naturally Infected with Streptococcus uberis
by Severyn Salis, Simone Dore, Nicola Rubattu, Vittoria D’Ascenzo, Francesca T. Cherchi and Stefano A. Lollai
Separations 2024, 11(8), 242; https://doi.org/10.3390/separations11080242 - 8 Aug 2024
Viewed by 1627
Abstract
An LC–Orbitrap–HRMS method was developed and validated for the simultaneous determination of four tetracyclines—oxytetracycline (OTC), tetracycline (TC), doxycycline (DC), and chlortetracycline (CTC)—in milk. This method involves sample extraction with McIlvaine–EDTA buffer solution (pH 4) and solid-phase extraction (SPE) with Oasis HLB cartridges, followed [...] Read more.
An LC–Orbitrap–HRMS method was developed and validated for the simultaneous determination of four tetracyclines—oxytetracycline (OTC), tetracycline (TC), doxycycline (DC), and chlortetracycline (CTC)—in milk. This method involves sample extraction with McIlvaine–EDTA buffer solution (pH 4) and solid-phase extraction (SPE) with Oasis HLB cartridges, followed by the evaporation of the extract and its reconstitution with a 14% methanol aqueous solution before injection into the instrumental system. This method has been validated in terms of linearity, sensitivity, selectivity, precision, and accuracy, in accordance with Commission Decision 2002/657/EC requirements. Compared to existing methods, this approach optimally combines a quantitative procedure for extracting analytes from the milk of different species, including sheep, bovines, and goats, with a very short LC–Orbitrap–HRMS instrumental analysis time (only 8 min), simultaneously ensuring high precision, sensitivity, and applicability as a rapid confirmation method in official food control laboratories. The proposed method was applied to determine the concentration levels of OTC in milk samples derived from healthy Sardinian sheep and those naturally infected with Streptococcus uberis, after the intramuscular administration of an antibiotic, in order to evaluate how much of the drug was “subtracted” during penetration from blood into milk, with a potential effect of reducing its therapeutic efficacy. Full article
Show Figures

Figure 1

Back to TopTop