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1.
Physiother Res Int ; 29(4): e2122, 2024 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-39152768

RESUMEN

BACKGROUND AND PURPOSE: Developing technology in the field of rehabilitation is vital to accelerate recovery and decrease the side effects of current modalities. Rehabilitation is a challenging science in which the main challenge is not just treating the patient but also to shorten the rehabilitation time and avoid harmful effects. Thus, this review demonstrates the possible design and effects of air therapy as a novel treatment branch besides hydrotherapy, electrotherapy, and manual therapy in the field of rehabilitation. METHODS: The search was conducted over clinical trials, literature reviews, and systematic reviews on the possible effects of treatments that may have similar effects to the newly developed air therapy. This search was conducted in the Web of Science, Scopus, EBSCO, and Medline databases. RESULTS: Air therapy could be used to improve the function of mechanoreceptors, improve circulation and microcirculation, decrease pain, the release of trigger points, regain the elasticity of soft tissues, treat acute and chronic inflammations, decrease muscle cramps and spasticity, strengthen muscle, and decrease muscle fatigue and Decreasing muscle fatigue and delayed muscle soreness. CONCLUSION: Air therapy is a novel treatment modality that can be used effectively in the field of rehabilitation. Air therapy could be a valuable and safe treatment in rehabilitation.


Asunto(s)
Aire , Humanos , Modalidades de Fisioterapia
2.
J Exp Biol ; 227(15)2024 Aug 01.
Artículo en Inglés | MEDLINE | ID: mdl-39089315

RESUMEN

Animals must tune their physical performance to changing environmental conditions, and the breadth of environmental tolerance may contribute to delineating the geographic range of a species. A common environmental challenge that flying animals face is the reduction of air density at high elevation and the reduction in the effectiveness of lift production that accompanies it. As a species, turkey vultures (Cathartes aura) inhabit a >3000 m elevation range, and fly considerably higher, necessitating that they accommodate for a 27% change in air density (0.890 to 1.227 kg m-3) through behavior, physiology or biomechanics. We predicted that birds flying at high elevation would maintain aerodynamic lift performance behaviorally via higher flight speeds, rather than increases in power output or local phenotypic adaptation. We used three-dimensional videography to track turkey vultures flying at three elevations, and data supported the hypothesized negative relationship between median airspeed and air density. Additionally, neither the ratio of horizontal speed to sinking speed nor flapping behavior varied with air density.


Asunto(s)
Falconiformes , Vuelo Animal , Animales , Vuelo Animal/fisiología , Fenómenos Biomecánicos , Falconiformes/fisiología , Aire , Altitud , Grabación en Video
4.
Food Res Int ; 193: 114861, 2024 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-39160048

RESUMEN

Cold plasma (CP) technology is a promising alternative to thermal treatments for the microbial decontamination of foods with low-water activity. The aim of this work is study the application of low-pressure CP (0.35 mbar) for the inactivation of Bacillus cereus in a soybean powder matrix using O2 and synthetic air as ionizing gases. The parameters tested were an input power of 100, 200 and 300 W and an exposure time of 10 to 30 min. The excited reactive species formed were monitored by optical emission spectroscopy, and survival data were analyzed using the Weibull mathematical model. Treatments with both gases were effective in inactivating B. cereus. Air plasma resulted in a maximum 3.71-log reduction in bacterial counts at 300 W and 30 min, while O2 plasma showed the strongest inactivation ability, achieving levels higher than 5 log cycles at 300 W and > 25 min. This is likely due to the strong antimicrobial activity of oxygen-derived radicals together with carbon monoxide as an oxidation by-product. In addition, the Weibull distribution function accurately modeled the inactivation of B. cereus. Cold plasma technology is a promising approach for the decontamination of bacteria in low-water activity foods.


Asunto(s)
Bacillus cereus , Microbiología de Alimentos , Glycine max , Viabilidad Microbiana , Oxígeno , Gases em Plasma , Agua , Bacillus cereus/efectos de los fármacos , Bacillus cereus/crecimiento & desarrollo , Gases em Plasma/farmacología , Agua/química , Glycine max/microbiología , Glycine max/química , Microbiología de Alimentos/métodos , Polvos , Aire , Recuento de Colonia Microbiana
5.
J Pediatr Surg ; 59(9): 1892-1896, 2024 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-38981832

RESUMEN

OBJECTIVE: This study aimed to evaluate the clinical application of delayed repeated air enema (DRE) with sedation in pediatric intussusception. METHOD: We retrospectively assessed cases of idiopathic intussusception treated with air enema reduction at the emergency department of Beijing Children's Hospital affiliated to Capital Medical University from January 2016 to August 2019. The included cases were assigned to the success or failure groups based on the outcomes of DRE with sedation. General patient information, clinical manifestations, test results, and surgical conditions were collected for comparative analysis. RESULTS: A total of 3052 cases were initially diagnosed with intussusception and underwent air enema reduction. Ultimately, 211 cases were included, with 162 in the success group and 49 in the failure group. The success rate of DRE with sedation was 76.8% (162/211), with an overall reduction success rate of 97.8% (2984/3052). Univariate logistic regression analysis showed that patients in the failure group had a significantly higher proportion of patients with age ≤1 year, bloody stools, and left-sided intussusception before DRE compared to the success group (OR = 2.3, 95%CI: 1.1∼4.6, P = 0.023; OR = 3.4, 95%CI: 1.6∼7.2, P = 0.002 and OR = 12.6, 95%CI: 4.6∼34.6, P < 0.001). Multiple logistic regression analysis based on these three factors revealed that the risk of DRE failure was 10.1 times higher in cases with the left-sided intussusception before DRE. CONCLUSIONS: DRE with sedation can improve the overall enema reduction success rate for intussusception and has good feasibility and safety profiles. Left-sided intussusception before DRE is an independent risk factor for enema failure.


Asunto(s)
Enema , Intususcepción , Humanos , Enema/métodos , Intususcepción/terapia , Estudios Retrospectivos , Femenino , Masculino , Lactante , Preescolar , Niño , Resultado del Tratamiento , Sedación Consciente/métodos , Aire
6.
Ultrason Sonochem ; 108: 106986, 2024 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-39002226

RESUMEN

This study employed segmented variable-frequency ultrasound synergistic hot-air drying (SVFU-HAD) for Rhubarb slices, selected two sets of time nodes for frequency conversion (60 min, 120 min, and 90 min, 150 min), and two sequences of frequency conversion (high-frequency to low-frequency, and low-frequency to high-frequency). It aimed to investigate the effects of SVFU-HAD on the drying characteristics, quality, and heat transfer of Rhubarb slices. The findings indicated that segmented variable-frequency ultrasound has advantages in increasing drying rate and improving uniformity of cavitation effects compared to constant-frequency ultrasound. Analysis of physical properties revealed that the rehydration performance of dried products subjected to ultrasonic variable-frequency treatment (90 min, 150 min) according to the drying rate was better (RR > 3.3). The transition mode from high-frequency to low-frequency in variable-frequency ultrasonic treatment contributes to maintaining the overall color of Rhubarb. Analysis of chemical properties unveiled that Rhubarb treated with 40 kHz (0 min)-28 kHz (60 min)-25 kHz (120 min) segmented variable-frequency ultrasound contained overall higher levels of tannins, dianthrones and free anthraquinones content, which exceeded the average values by 3.24%, 26.65%, and 14.42%, respectively. In addition, thermal analysis results based on ANSYS Workbench software demonstrated that the drying uniformity of SVFU-HAD is superior to that of hot-air drying and constant-frequency ultrasound synergistic hot-air drying (CFU-HAD). Overall, the SVFU-HAD method employed in this study presents an innovative approach to ultrasound synergistic hot-air drying research with promising potential for enhancing the efficiency and quality characteristics of Rhubarb slices.


Asunto(s)
Desecación , Calor , Rheum , Rheum/química , Desecación/métodos , Aire , Ondas Ultrasónicas
7.
J Agric Food Chem ; 72(30): 16988-16997, 2024 Jul 31.
Artículo en Inglés | MEDLINE | ID: mdl-39024566

RESUMEN

Reducing salt intake without affecting the saltiness perception remains a great challenge for the food industry. Herein, the demulsification of water droplets and air bubbles was controlled to modulate the release of sodium from oleogel-stabilized water-in-oil emulsions (OGEs) stabilized by monoglyceride crystals. The effect of monoglycerides with carbon chain length (glycerol monolaurate-GML, glyceryl monostearate-GMS, and glycerol monopalmitate-GMP) and homogenization methods (hand-shaking or high-speed blender) on sodium release and saltiness was investigated by in vitro and in vivo oral processing tests. Milky-white stable emulsions were formed with both water droplets and air bubbles dispersing in the oil phase, regardless of the selected homogenization methods. Air bubbles were more unstable than water droplets during oral digestion. GML OGEs with more and larger air bubbles and the lowest hardness exhibited the highest sodium release rate and the strongest saltiness, independent of homogenization methods. The balance between air bubbles and water droplets in the GMS and GMP OGEs caused slower sodium release and lower saltiness. Overall, the presence of air bubbles in NaCl-loaded W/O oleogel-based emulsions was shown to have important implications for tailoring their sodium release and saltiness.


Asunto(s)
Emulsiones , Compuestos Orgánicos , Agua , Emulsiones/química , Compuestos Orgánicos/química , Agua/química , Humanos , Cloruro de Sodio/química , Monoglicéridos/química , Gusto , Aceites/química , Aire , Masculino
8.
BMC Anesthesiol ; 24(1): 216, 2024 Jul 01.
Artículo en Inglés | MEDLINE | ID: mdl-38956472

RESUMEN

BACKGROUND: Tracheal tube cuff pressure will increase after pneumoperitoneum when the cuff is inflated with air, high pressure can cause tracheal mucosal damage. This prospective trial aimed to assess if inflating with normal saline or lidocaine can prevent increase of tracheal tube cuff pressure and tracheal mucosal damage in laparoscopic surgeries with general anesthesia. Whether changes of tracheal tube cuff transverse diameter (CD) can predict changes of tracheal tube cuff pressure. METHODS: Ninety patients scheduled for laparoscopic resection of colorectal neoplasms under general anesthesia were randomly assigned to groups air (A), saline (S) or lidocaine (L). Endotracheal tube cuff was inflated with room-temperature air in group A (n = 30), normal saline in group S (n = 30), 2% lidocaine hydrochloride injection in group L (n = 30). After intubation, tracheal tube cuff pressure was monitored by a calibrated pressure transducers, cuff pressure was adjusted to 25 cmH2O (T0.5). Tracheal tube cuff pressure at 15 min after pneumoperitoneum (T1) and 15 min after exsufflation (T2) were accessed. CD were measured by ultrasound at T0.5 and T1, the ability of ΔCD (T1-0.5) to predict cuff pressure was accessed. Tracheal mucous injury at the end of surgery were also recorded. RESULTS: Tracheal tube cuff pressure had no significant difference among the three groups at T1 and T2. ΔCD had prediction value (AUC: 0.92 [95% CI: 0.81-1.02]; sensitivity: 0.99; specificity: 0.82) for cuff pressure. Tracheal mucous injury at the end of surgery were 0 (0, 1.0) in group A, 0 (0, 1.0) in group S, 0 (0, 0) in group L (p = 0.02, group L was lower than group A and S, p = 0.03 and p = 0.04). CONCLUSIONS: Compared to inflation with air, normal saline and 2% lidocaine cannot ameliorate the increase of tracheal tube cuff pressure during the pneumoperitoneum period under general anesthesia, but lidocaine can decrease postoperative tracheal mucosa injury. ΔCD measured by ultrasound is a predictor for changes of tracheal tube cuff pressure. TRIAL REGISTRATION: Chinese Clinical Trial Registry, identifier: ChiCTR2100054089, Date: 08/12/2021.


Asunto(s)
Neoplasias Colorrectales , Intubación Intratraqueal , Laparoscopía , Lidocaína , Presión , Solución Salina , Humanos , Neoplasias Colorrectales/cirugía , Masculino , Persona de Mediana Edad , Lidocaína/administración & dosificación , Intubación Intratraqueal/métodos , Intubación Intratraqueal/instrumentación , Femenino , Laparoscopía/métodos , Estudios Prospectivos , Solución Salina/administración & dosificación , Aire , Anciano , Anestésicos Locales/administración & dosificación , Anestesia General/métodos , Adulto , Neumoperitoneo Artificial/métodos
9.
Ultrason Sonochem ; 108: 106978, 2024 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-38971086

RESUMEN

Drying, as a critical step in the production of air-dried beef, has a direct impact on the quality of the final product. Innovatively, a composite system incorporating contact ultrasound (CU) and infrared radiation (IR) as auxiliary measures within a hot air drying (HAD) framework was built in this research, and the effects of these techniques on the drying kinetics, protein denaturation, and moisture transformation of air-dried beef were investigated. In comparison to HAD treatment, the integrated CU and IR (CU-IRD) system displayed marked enhancements in heat and moisture transport efficiency, thereby saving 36.84% of time expenditure and contributing favorably to the improved moisture distribution of the end-product. This was mainly ascribed to the denaturation of myosin induced by IR thermal effect and the micro-channel produced by CU sponge effect, thus increasing T2 relaxation time and the proportion of free water. In conclusion, the composite system solved the problem of surface hardening and reduces hardness and chewiness of air-dried beef by 40.42% and 45.25% respectively, but inevitably increased the energy burden by 41.60%.


Asunto(s)
Aire , Desecación , Rayos Infrarrojos , Agua , Agua/química , Cinética , Desecación/métodos , Bovinos , Animales , Ondas Ultrasónicas , Calor , Carne Roja , Fenómenos Físicos
11.
Neurol India ; 72(3): 514-519, 2024 May 01.
Artículo en Inglés | MEDLINE | ID: mdl-39041966

RESUMEN

BACKGROUND AND OBJECTIVES: Stereotactic biopsies are a relatively safe and reliable way of tissue diagnosis and characterization of eloquent area lesions/neoplasm. However, predicting the accuracy of the site of biopsy with the desired/planned site is not always possible. We describe a technique to identify the precise location of the biopsy site in the post-operative computed tomography (CT) scan using the injection of a low volume of air into the biopsy cannula. METHODS: Hundred consecutive biopsies were performed in 80 adults/20 children (59 males/41 females, median age 51 years) over 3 years, consisting of 75 frameless and 25 frame-based stereotactic biopsies. After the biopsy specimens had been collected, a small volume of air (median 1 cc) was injected into the site. Post-operative CT was done within 4 hours of the biopsy to see the site of the air bubble, and the same was correlated with the histopathological accuracy. RESULTS: Intra-cranial air in the selected target was present in 95 patients (Grade 1 and 2), while the air was seen in the track (Grade 3) in 3% and at an unrelated site (Grade 4) in 2% of cases. Both Grade 4 biopsies were negative on histopathology (diagnostic yield = 98%). Two negative biopsies were reported, which were both predicted with the Grade 4 biopsy. The grading allowed uniform reporting across series and eliminated the chance of upgrading/downgrading the report due to wrong site sampling within the lesion/neoplasm. CONCLUSION: The air-injection manoeuvre proposed for use in stereotactic biopsies of intra-cranial mass lesions is a safe and reliable technique that allows the exact biopsy site to be located without any related complications.


Asunto(s)
Aire , Técnicas Estereotáxicas , Tomografía Computarizada por Rayos X , Humanos , Femenino , Masculino , Persona de Mediana Edad , Biopsia/métodos , Niño , Adulto , Preescolar , Anciano , Adolescente , Neoplasias Encefálicas/patología , Neoplasias Encefálicas/diagnóstico por imagen , Neoplasias Encefálicas/diagnóstico , Adulto Joven
12.
J Radiol Prot ; 44(3)2024 Aug 02.
Artículo en Inglés | MEDLINE | ID: mdl-39053496

RESUMEN

This study explores the conversion coefficients from air kerma to operational quantities for radiation protection, using x-ray spectrometry for the narrow-beam qualities below 300 keV as defined by ISO 4037-1. By employing custom spectral correction algorithms combined with modern cadmium telluride (CdTe) semiconductor detectors, we effectively corrected spectral distortions caused by detection processes, ensuring more reliable measurements. These measurements are crucial for meeting radiation protection standards. The study also analyses the sources of uncertainty associated with the determination of conversion coefficients, thereby providing improved accuracy and reproducibility in photon dosimetry.


Asunto(s)
Protección Radiológica , Algoritmos , Radiometría/métodos , Reproducibilidad de los Resultados , Telurio/química , Compuestos de Cadmio/química , Aire , Dosis de Radiación
13.
Am J Case Rep ; 25: e944517, 2024 Jul 23.
Artículo en Inglés | MEDLINE | ID: mdl-39042594

RESUMEN

BACKGROUND Acute corneal hydrops, a rare complication of keratoconus, is characterized by sudden onset of corneal stroma edema. It typically manifests as an acute decrease in visual acuity, accompanied by pain and photophobia. Prompt recognition and interventions are critical for effective resolution of hydrops and prevention of corneal vascularization. Herein, we present a case of a patient with keratoconus who developed corneal hydrops, successfully managed using full-thickness compression sutures and intracameral air injection. CASE REPORT A woman in her early 30s, with a history of keratoconus, presented with symptoms of acute hydrops in her left eye. On presentation, best corrected visual acuity was hand motion. Slit-lamp examination revealed marked corneal edema with multiple stromal clefts. The decision was made to perform full-thickness compression sutures combined with intracameral air injection to expedite edema resolution and prevent neovascularization. Three full-thickness sutures were placed across Descemet membrane breaks, and an air bubble was left, filling 50% of the anterior chamber. At 3-month follow-up, a clear, compact cornea was noted, with no evidence of vascularization. The patient was scheduled for penetrating keratoplasty for visual rehabilitation. CONCLUSIONS The combination of full-thickness compression sutures and intracameral air seems to be an effective and safe method for preventing corneal angiogenesis following hydrops. As corneal scaring is often an inevitable complication of acute corneal hydrops, keratoplasty is necessary for improving visual acuity. Hence, the prevention of corneal vascularization should be the major aim in the management of corneal hydrops to ensure successful keratoplasty.


Asunto(s)
Aire , Edema Corneal , Queratocono , Técnicas de Sutura , Humanos , Femenino , Edema Corneal/etiología , Adulto , Queratocono/cirugía , Enfermedad Aguda , Agudeza Visual
14.
Biofabrication ; 16(4)2024 Aug 13.
Artículo en Inglés | MEDLINE | ID: mdl-39038483

RESUMEN

The function of a well-differentiated nasal epithelium is largely affected by airflow-induced wall shear stress, yet fewin vitromodels recapitulate this dynamic condition. Models which do expose cells to airflow exclusively initiate flow after the differentiation process has occurred.In vivo, basal cells are constantly replenishing the epithelium under airflow conditions, indicating that airflow may affect the development and function of the differentiated epithelium. To address this gap in the field, we developed a physiologically relevant microphysiological model of the human nasal epithelium and investigated the effects of exposing cells to airflow during epithelial maturation at the air-liquid interface. The nasal airway-on-chip platform was engineered to mimic bi-directional physiological airflow during normal breathing. Primary human nasal epithelial cells were seeded on chips and subjected to either: (1) no flow, (2) single flow (0.5 dyne cm-2flow on Day 21 of ALI only), or (3) pre-conditioning flow (0.05 dyne cm-2on Days 14-20 and 0.5 dyne cm-2flow on Day 21) treatments. Cells exposed to pre-conditioning showed decreased morphological changes and mucus secretions, as well as decreased inflammation, compared to unconditioned cells. Our results indicate that flow exposure only post-differentiation may impose acute stress on cells, while pre-conditioning may potentiate a properly functioning epitheliumin vitro.


Asunto(s)
Células Epiteliales , Dispositivos Laboratorio en un Chip , Mucosa Nasal , Humanos , Células Epiteliales/citología , Células Epiteliales/metabolismo , Mucosa Nasal/citología , Mucosa Nasal/metabolismo , Diferenciación Celular , Células Cultivadas , Aire , Modelos Biológicos , Ingeniería de Tejidos
15.
J Colloid Interface Sci ; 674: 951-958, 2024 Nov 15.
Artículo en Inglés | MEDLINE | ID: mdl-38959740

RESUMEN

HYPOTHESIS: Our hypothesis is that dynamic interfacial tension values as measured by the partitioned-Edge-based Droplet GEneration (EDGE) tensiometry can be connected to those obtained with classical techniques, such as the automated drop tensiometer (ADT), expanding the range of timescales towards very short ones. EXPERIMENTS: Oil-water and air-water interfaces are studied, with whey protein isolate solutions (WPI, 2.5 - 10 wt%) as the continuous phase. The dispersed phase consists of pure hexadecane or air. The EDGE tensiometer and ADT are used to measure the interfacial (surface) tension at various timescales. A comparative assessment is carried out to identify differences between protein concentrations as well as between oil-water and air-water interfaces. FINDINGS: The EDGE tensiometer can measure at timescales down to a few milliseconds and up to around 10 s, while the ADT provides dynamic interfacial tension values after at least one second from droplet injection and typically is used to also cover hours. The interfacial tension values measured with both techniques exhibit overlap, implying that the techniques provide consistent and complementary information. Unlike the ADT, the EDGE tensiometer distinguishes differences in protein adsorption dynamics at protein concentrations as high as 10 wt% (which is the highest concentration tested) at both oil-water and air-water interfaces.


Asunto(s)
Tensión Superficial , Agua , Proteína de Suero de Leche , Adsorción , Proteína de Suero de Leche/química , Agua/química , Aire , Alcanos/química , Aceites/química , Tamaño de la Partícula , Propiedades de Superficie , Técnicas Analíticas Microfluídicas/instrumentación
16.
Phys Med ; 123: 103401, 2024 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-38852367

RESUMEN

BACKGROUND AND PURPOSE: This study aimed to investigate the reproducibility of a novel approach using 3D printed brachytherapy applicators for the treatment of skin cancer. Specifically, we aimed to assess the accuracy of applicator placement and to minimize the existence of air gap pockets between the applicator and the patient's skin. MATERIALS AND METHODS: A total of 20 patients plans diagnosed with skin cancer were enrolled in this study. All patients underwent high dose rate (HDR) brachytherapy. To ensure precise applicator placement, patient-specific 3D printed applicators were designed based on individual body and tumor topography, utilizing data obtained from computer tomography (CT) scans. All applicators were fabricated using fused deposition modeling technology. RESULTS: The error in applicator placement was measured and found to be less than 1.0 mm on average, with a standard deviation of 0.9 mm. Additionally, the average error in air gap pockets between the applicator and the patient's skin was 0.4 mm (standard deviation was 0.5 mm). The study demonstrated that the personalized approach of 3D printed brachytherapy applicator placement in skin cancer treatment yielded highly accurate results. The average error of less than 1.0 mm in applicator positioning and the minimal air gap pockets demonstrated the reproducibility and precision of this technique. CONCLUSION: Our study establishes the reproducibility and accuracy of 3D-printed brachytherapy applicator placement in the treatment of skin cancer. This personalized treatment approach offers a highly precise method for delivering radiation therapy, minimizing the risk to adjacent healthy tissues, and enhancing overall patient outcomes.


Asunto(s)
Braquiterapia , Impresión Tridimensional , Dosificación Radioterapéutica , Neoplasias Cutáneas , Braquiterapia/métodos , Braquiterapia/instrumentación , Humanos , Neoplasias Cutáneas/radioterapia , Reproducibilidad de los Resultados , Planificación de la Radioterapia Asistida por Computador/métodos , Aire , Dosis de Radiación , Tomografía Computarizada por Rayos X , Masculino
17.
World J Surg ; 48(8): 2000-2015, 2024 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-38844410

RESUMEN

INTRODUCTION: Colonic Diverticular Disease (CDD) is a multifactorial inflammatory disease. Acute diverticulitis (AD), with extraluminal free air (both pericolic and distant), represents about 15% of radiological scenarios and remains a therapeutic challenge for surgeons. Currently, the WSES guidelines suggest trying a conservative strategy both in the presence of pericolic and distant free extraluminal air, even if both have respectively weak recommendation based on low/very low-quality evidence. METHODS: We performed a systematic review following the Preferred Reporting Items for Systematic Reviews and Meta-Analyzes guidelines. PubMed/MEDLINE, Scopus, Web of Science, and Embase databases were used to identify articles of interest. RESULTS: A total of 2380 patients with AD and extraluminal free air (both pericolic and distant) who underwent nonoperative management (NOM) were analyzed. Of the 2380 patients, 2095(88%) were successfully treated with NOM, while 285 (12%) patients failed. A total of 1574 (93.1%) patients with pericolic extraluminal free air had a successful NOM with 6.9% (117) failure rates, while 135 (71.1%) patients with distant extraluminal free air had a successful NOM with 28.9% (55) failure rates. Regarding distant recurrence, we recorded a rate of 18.3% (261/1430), while a rate of 11.3% (167/1472) was recorded for patients undergoing elective surgery. CONCLUSION: NOM for patients with AD and extraluminal free air (both pericolic and distant) seems to be feasible and safe despite a higher failure rate in the distant subgroup, which remains the most challenging clinical scenario to deal with through conservative treatment.


Asunto(s)
Tratamiento Conservador , Diverticulitis del Colon , Humanos , Diverticulitis del Colon/terapia , Diverticulitis del Colon/complicaciones , Enfermedad Aguda , Tratamiento Conservador/métodos , Aire
18.
J Contam Hydrol ; 265: 104382, 2024 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-38861839

RESUMEN

Some Per- and polyfluoroalkyl substances (PFAS) are strongly retained in the vadose zone due to their sorption to both soils and air-water interfaces. While significant research has been dedicated to understanding equilibrium behavior for these multi-phase retention processes, leaching and desorption from aqueous film-forming foam (AFFF) impacted soils under field relevant conditions can exhibit significant deviations from equilibrium. Herein, laboratory column studies using field collected AFFF-impacted soils were employed to examine the leaching of perfluoroalkyl acids (PFAAs) under simulated rainfall conditions. The HYDRUS 1-D model was calibrated to estimate the unsaturated hydraulic properties of the soil in a layered system using multiple boundary condtions. Forward simulations of equilibrium PFAS partitioning using the HYDRUS model and simplified mass balance calculations showed good agreement with the net PFAS mass flux out of the column. However, neither were able to predict the PFAS concentrations in the leached porewater. To better understand the mechanisms controlling the leaching behavior, the HYDRUS 1-D two-site leaching model incorporating solid phase rate limitation and equilibrium air-water interfacial partitioning was employed. Three variations of the novel model incorporating different forms of equilibrium air-water interfacial partitioning were considered using built-in numerical inversion. Results of numerical inversion show that a combination of air-water interfacial collapse and rate-limited desorption from soils can better predict the unique leaching behavior exhibited by PFAAs in AFFF-impacted soils. A sensitivity analysis of the initial conditions and rate-limited desorption terms was conducted to assess the agreement of the model with measured data. The models demonstrated herein show that, under some circumstances, laboratory equilibrium partitioning data can provide a reasonable estimation of total mass leaching, but fail to account for the significant rate-limited, non-Fickian transport which affect PFAA leaching to groundwater in unsaturated soils.


Asunto(s)
Fluorocarburos , Agua Subterránea , Contaminantes del Suelo , Contaminantes Químicos del Agua , Fluorocarburos/química , Contaminantes Químicos del Agua/química , Contaminantes Químicos del Agua/análisis , Agua Subterránea/química , Contaminantes del Suelo/química , Contaminantes del Suelo/análisis , Suelo/química , Modelos Teóricos , Adsorción , Aire , Modelos Químicos
19.
J Biotechnol ; 392: 1-10, 2024 Sep 10.
Artículo en Inglés | MEDLINE | ID: mdl-38897291

RESUMEN

The widespread adoption of Poly(3-hydroxybutyrate) (PHB) encounters challenges due to its higher production costs compared to conventional plastics. To overcome this obstacle, this study investigates the use of low-cost raw materials and optimized production methods. Specifically, food processing byproducts such as corn germ and corn bran were utilized as solid substrates through solid-state fermentation, enriched with molasses and cheese whey. Employing the One Factor at a Time technique, we examined the effects of substrate composition, temperature, initial substrate moisture, molasses, and cheese whey on PHB production at the flask scale. Subsequently, experiments were conducted at the bioreactor scale to evaluate the influence of aeration. In flask-scale experiments, the highest PHB yield, reaching 4.1 (g/kg Initial Dry Weight Substrate) (IDWS) after 72 hours, was achieved using a substrate comprising a 1:1 mass ratio of corn germ to corn bran supplemented with 20 % (v/w) cheese whey. Furthermore, PHB production in a 0.5-L packed-bed bioreactor yielded a maximum of 8.4 (g/kg IDWS), indicating a more than 100 % increase in yield after 72 hours, with optimal results achieved at an aeration rate of 0.5 l/(kg IDWS. h).


Asunto(s)
Reactores Biológicos , Cupriavidus necator , Fermentación , Microbiología Industrial , Polihidroxibutiratos , Zea mays , Polihidroxibutiratos/biosíntesis , Zea mays/química , Zea mays/metabolismo , Cupriavidus necator/metabolismo , Microbiología Industrial/métodos , Agua , Melaza , Suero Lácteo/metabolismo , Aire
20.
J Environ Manage ; 362: 121228, 2024 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-38823304

RESUMEN

The advent of air nanobubbles (ANBs) has opened up a wide range of commercial applications spanning industries including wastewater treatment, food processing, biomedical engineering, and agriculture. The implementation of electric field-based air nanobubbles (EF-ANBs) irrigation presents a promising approach to enhance agricultural crop efficiency, concurrently promoting environmentally sustainable practices through reducing fertilizer usage. This study investigated the impact of EF-ANBs on the germination and overall growth of agricultural crops in soil. Results indicate a substantial enhancement in both germination rates and plant growth upon the application of EF-ANBs. Notably, the introduction of ANBs led to a significant enhancement in the germination rate of lettuce and basil, increasing from approximately 20% to 96% and from 16% to 53%, respectively over two days. Moreover, the presence of EF-ANBs facilitates superior hypocotyl elongation, exhibiting a 2.8- and a 1.6-fold increase in the elongation of lettuce and basil, respectively, over a six-day observation period. The enriched oxygen levels within the air nanobubbles expedite aerobic respiration, amplifying electron leakage from the electron transport chain (ETC) and resulting in heightened reactive oxygen species (ROS) production, playing a pivotal role in stimulating growth signaling. Furthermore, the application of EF-ANBs in irrigation surpasses the impact of traditional fertilizers, demonstrating a robust catalytic effect on the shoot, stem, and root length, as well as the leaf count of lettuce plants. Considering these parameters, a single fertilizer treatment (at various concentrations) during EF-ANBs administration, demonstrates superior plant growth compared to regular water combined with fertilizer. The findings underscore the synergistic interaction between aerobic respiration and the generation of ROS in promoting plant growth, particularly in the context of reduced fertilizer levels facilitated by the presence of EF-ANBs. This promising correlation holds significant potential in establishing more sustainability for ever-increasing environmentally conscious agriculture.


Asunto(s)
Riego Agrícola , Productos Agrícolas , Fertilizantes , Productos Agrícolas/crecimiento & desarrollo , Riego Agrícola/métodos , Lactuca/crecimiento & desarrollo , Germinación/efectos de los fármacos , Suelo/química , Agricultura/métodos , Aire
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