Mechanistic Insights into UV Spectral Changes of Pyruvic Acid and Pyruvate Part 1: Interaction with Water Molecules
Published on: 16th July, 2024
We investigate how the UV spectra of pyruvic acid (PA) and pyruvate are impacted by interactions with water molecules. In particular, we would like to understand the mechanistic origin of the blue shift in the n →− π∗ transition. Pyruvic acid is the simplest α-keto organic acid and is common in the environment. We use density functional theory to optimize geometries to determine excitation energies and find that the excitation energies of the two main pyruvic acid conformers and pyruvate blue shift when interacting with 1 to 4 water molecules, both in vacuo and in a solvent. The excitation wavelength is blue-shifted by 0.9-9.2 nm when adding water molecules to the lowest energy conformer of PA. Calculations of the UV spectra of pyruvic acid (PA) and pyruvate are crucial for understanding the impact of the interactions with water molecules.
Application of Bioactive Cotton Packages for Packaging and Storage of Grains Using Aromatic Components
Published on: 29th August, 2025
In recent years, studies on the utility of essential oils and their components in the preservation of food commodities in order to enhance shelf-life has been successfully carried out. These essential oils and their components (Carvacrol, Eugenol and Cinnamaldehyde) can be used as antimicrobials and food preservative agents; however, their use raises concerns because of several reported side effects of synthetic oils. Due to their antimicrobial potential, essential oil constituents could be used as food preservatives for grains, cereals, vegetables and fruits. The aim of the treatments was carried out on the treated cotton packaging to maximize the benefit from its antimicrobial activity to extend grain Storage periods. The cotton fabrics treated in three steps: Carboxymethylation of cotton fabric (CMC) Cationization of cotton fabric 3-Treatment of the fabrics by reactive-cyclodextrine (RCD). Modified and unmodified cotton fabrics were treated with antibacterial agent by dipping them at room temperature for 2 hours under stirring in dimethyl sulfoxide (DMSO) solution containing 200, 250, 250 ppm of Eugenol, carvacrol and cinnamaldehyde respectively the samples were then roll-squeezed at pick up 100% and dried at room temperature. All treated and untreated fabrics were subjected to antimicrobial tests. Cotton fabric composites treated with cinnamaldehyde had the highest impact on reducing microbial preparation during storage period followed by cotton fabric composite treated by Carvacrol followed by cotton fabric composite treated by Eugenol which is less impactful to reduce microbial count during the storage period.
Differences in Percentages in Osseointegration and Bone Stability between Multibody and Standard Implants
Published on: 1st September, 2025
Dental implantology represents a cornerstone of modern restorative dentistry, providing long-term functional and esthetic rehabilitation of missing teeth. The process of osseointegration—first introduced by Brånemark—refers to the direct structural and functional connection between living bone and the surface of a load-bearing implant [Brånemark, 1985].
Necrotizing Fasciitis in Neonates Case Series
Published on: 1st September, 2025
Introduction: Necrotizing Fasciitis (NF) is a rapidly progressing and life-threatening soft tissue infection, exceedingly rare but often fatal in neonates. This case series highlights the rarity, fulminant nature, and poor prognosis of neonatal NF by presenting four cases.Case presentation: Four neonates, aged 12-16 days, presented with rapidly spreading, tender, erythematous, and indurated skin lesions on their backs, initially resembling burns. Systemic symptoms like fever, lethargy, and poor feeding were common. Despite empirical antibiotics, the lesions progressed to necrosis, often with bullae formation. Microbiological cultures revealed polymicrobial growth in three cases (E. coli, Pseudomonas sp., Klebsiella, and MRSA) and monomicrobial growth of MRSA in one case, frequently exhibiting antibiotic resistance. Surgical debridement was performed in three cases. Despite aggressive management, two neonates succumbed to sepsis and multi-organ dysfunction. The other two neonates recovered after prolonged antibiotic therapy and wound care.Discussion: These cases underscore the diagnostic challenges and rapid progression of NF in neonates. The consistent presentation after 10 days of birth, rapid lesion spread mimicking burns, and predilection for the back were notable features. Polymicrobial infection was frequent. Early recognition, aggressive broad-spectrum antibiotics, and timely surgical debridement are crucial for improving the poor prognosis associated with this condition.
Seismic Analysis of Semi-rigid Frames using Skeleton Joints
Published on: 3rd September, 2025
This study proposes a new type of flange-widened bone-type semi-rigid frame node, and takes a 4-story frame as an example, uses the finite element software Abaqus to analyze its seismic performance under different seismic waves, and compares it with the traditional rigid connection frame. The results show that the stiffness of the new node frame is slightly lower than that of the tradition rigid node frame, which reduces the horizontal displacement of each layer under the action of earthquake, optimizes the deformation capacity, and enhances the force performance and ductility, the maximun value of the base shear force is lower than that of the traditional rigid frame, which can effectively disperse and dissipate the seismic energy andimprove the overall stabitity of the structure; the elastic-plastic interlayer displacement angle is less than 1/50 under rare earthquakes, which meets the requirements of the specification and can achieve the goal of “no collapse in a large earthquake”. In addition, the node can effectively improve the safety and reliability of the structure in actual engineering.
Nematophagous Fungus: Pochonia chlamydosporia and Duddingtonia flagrans in the Control of Helminths in Laying Hens (Gallus gallus domesticus) Genus Hy-line Brown - Evaluation and Effectiveness
Published on: 9th September, 2025
The resistance to anthelmintics in poultry farming and the challenges with the restricted use of drugs in organic farms make the use of biological controllers an innovative bridge to verminosis control. This paper aims to evaluate the efficacy of the larvicidal fungus Duddingtonia flagrans and the ovicidal fungus Pochonia chlamydosporia in Hy-line Brown (Gallus Gallus Domesticus) layer farms. Both fungi were combined in the core of the feed administered to the birds of the treated groups. 28,000 birds were used and divided into three treated groups (TG) in which the feed containing the fungus was administered. The poultry house itself manufactures the birds’ feed; the formula was included in the nucleus at a dose of 100 grams per ton of feed for 7 months. The concentration was 105 chlamydospores of P. chlamydosporia and D. flagrans per gram of the formulation. The control group (CG) received regular food from the farm. The birds were separated into four sheds with 7,000 birds in each. The egg per gram of feces (EPG) testing was performed using fresh fecal samples collected from the sheds over six months. Weather data was collected during the experiment. There was a reduction in the EPG count into three treated groups. The most prevalent helminth was the genus Ascaris. The formulation tested shows little efficacy in this dosage. Key points:• The use of the fungus P. chlamydosporia and D. flagrans in organic farms;• Use of biocontrol agents without chemicals in poultry;
Physiotherapy Rehabilitation in a 7-Year-old Male with Gait Impairment and Developmental Regression: A Case Report
Published on: 15th September, 2025
This case report describes a 7-year-old male with gait impairment, frequent falls, and gross motor regression since age 4, despite normal early developmental milestones. Clinical findings included scissoring gait, bilateral lower limb hypotonia, proximal weakness, dystonic right-hand movements, and upgoing plantar reflexes, with normal neuroimaging. Differential diagnoses included cerebral palsy, hereditary spastic paraplegia, dopa-responsive dystonia, and proximal myopathy. Physiotherapy interventions focused on balance, strengthening, gait re-education, and functional independence. After a structured program (45 minutes per session, 5 days/week for 12 weeks), the child demonstrated measurable improvements in GMFM (71.78%), functional independence (FIM: 88), and gait stability, with reduced falls and improved ADL participation. This case highlights diagnostic challenges in pediatric motor disorders and underscores the essential role of physiotherapy in optimizing function despite diagnostic uncertainty.
The Revolution was [only?] A Man’s Thing: Asturian Women in October 1934
Published on: 15th September, 2025
The aim of this paper is to analyze the role of women in Asturias in October 1934, which has hardly any specific studies. Especially women from the mining working class and politicized young women actively participated in support of men; of course, almost always in functions “appropriate to their sex” (nurses, provisioners of the support of the combatants and caregivers of the children). They were victims of repression by Moors and legionnaires and some fell in combat.
Clinical Performance of the Erba H7100 Hematology Analyzer: Focus on Reticulocytes
Published on: 18th September, 2025
This study comparatively evaluated the analytical performance of the Erba H7100 hematology analyzer against the Siemens Advia 2120i and Beckman Coulter DXH 900, using 243 patient samples. The study assessed the agreement and linear relationship across 14 key hematological parameters in whole blood, employing statistical methods that included mean bias, standard deviation of the difference, Pearson’s correlation, and coefficient of determination. Additionally, reticulocyte counts were analyzed in 27 samples for Erba H7100 vs. Advia 2120i and 53 samples for Erba H7100 vs. DXH 900, revealing exceptional agreement with high Pearson’s r and r-squared values. The performance of the Erba H7100 and DXH 900 in analyzing ascitic, cerebrospinal, and bronchial wash fluids was also evaluated. Notably, the Advia 2120i analyzer exhibited discrepancies in mean corpuscular volume (MCV) and monocyte counts (Mon#). Conversely, the Erba H7100 showed better agreement with the DXH 900 for MCV and Mon# in whole blood. In fluid samples, Erba H7100 and DXH 900 demonstrated a strong correlation with Microscopy in determining Neutrophil % and Lymphocyte % values. Strong linear correlations were observed for most parameters in whole blood, with reticulocyte counts showing near-perfect correlation. This study underscores the importance of rigorous validation and potential platform-specific reference intervals to ensure accurate and reliable hematological testing, emphasizing the need for standardized methodologies in clinical laboratories.
Excipients and Vehicles in Galenic Practice: Considerations for Neonatology and Pediatrics: An Overview and Results of a Practical Experience
Published on: 2nd October, 2025
Excipients are fundamental components of galenic formulations, critically influencing the safety and efficacy of the final medicinal product. This is of paramount importance in neonatal and pediatric populations, where physiological immaturity results in significant differences in pharmacokinetics and pharmacodynamics compared to adults. This work provides a comprehensive overview of excipients and vehicles used in galenic preparations for these vulnerable groups. It highlights specific excipients known to be dangerous, detailing their mechanisms of toxicity, and suggests safer alternatives. The discussion covers formulations for oral solutions, suspensions, and topical dermatological use, including ready-to-use vehicles. The role of the prescribing physician and the verifying pharmacist is emphasized, underscoring the necessity of checking for efficacy, safety, incompatibilities, and microbiological compatibility. The results of a practical five-year local experience with an observational analysis are provided.Furthermore, innovative technologies such as 3D printing for pediatric dosage forms are discussed. The conclusion asserts that a rigorous, risk-based assessment of excipients is essential in neonatal and pediatric galenic practice to ensure patient safety.
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