El objetivo principal de este estudio es el de explicar de qué forma surgió el futbol soccer en la ciudad de México en el periodo que va de 1892 a 1910. En lugar de un proceso, uniforme, lineal y ...planificado, el surgimiento del futbol en la ciudad de México debe analizarse como un proceso interdependiente, coproducido y no planificado, donde en diferentes momentos, una gran cantidad de personas con intereses diversos y asentadas en diferentes ciudades del país, intervinieron y llevaron a cabo una serie de acciones con el fin de establecer, desarrollar y fomentar la práctica del futbol.
The primary objective of this study is to explain the way in which soccer emerged in Mexico City in the period from 1892 to 1910. Rather than being a uniform, linear, planned process, the emergence of soccer in Mexico City must be analyzed as an interdependent, coproduced and unplanned process in which, at different times, a large number of people with different interests from different cities across the country intervened and carried out a series of actions to establish, develop and promote soccer.
It has been estimated that 20% of the general population will suffer shoulder pain throughout their lives, with a prevalence that can reach up to 50%. The suprascapular nerve (SSN) provides sensation ...for the posterior and superior regions of the glenohumeral joint, whereas the anterior and inferior zones and the skin are innervated mostly by the axillary nerve. Pulsed radiofrequency on the SSN has been proposed as a therapeutic option in chronic shoulder pain. Axillary nerve block has been proposed in the context of surgical analgesia as an adjuvant to SSN block.
Ultrasound (US)-guided techniques target the nerve selectively, minimizing patients' and physicians' exposure to harmful radiation while increasing success rates by better needle placement. We perform both US-guided techniques with the patient in a lateral decubitus position with the affected shoulder on the upper side.
The aim of this report is to describe the adaptation of a US-guided technique that targets both the suprascapular and axillary nerves for the treatment of painful shoulder syndrome. The simultaneous pulsed radiofrequency on the suprascapular and axillary nerves for the treatment of the chronic condition of shoulder pain has been scarcely studied, with very few references in the literature.
By adapting an approach developed in acute pain management, we can safely deliver pulsed radiofrequency to the suprascapular and axillary nerves for the treatment of shoulder pain.
In the context of opioid-sparing perioperative management, there is still little evidence from randomized controlled trials regarding the effectiveness of interfascial thoracic blocks. This study ...hypothesizes that receiving a serratus plane block reduces opioid requirements, pain scores, and rescue medication needs.
This double-blind, randomized controlled study was conducted on 60 adult females undergoing oncologic breast surgery. After general anesthesia, patients were randomly allocated to either conventional analgesia (control group, n=30) or single-injection serratus block with L-bupivacaine 0.25% 30mL (study group, n=30). First 24-hour total morphine consumption (primary outcome), pain scores at 1, 3, 6, 12, and 24 hours, time-to-first opioid rescue analgesia, and adverse effects were recorded.
Median 24 hours' opioid dose was greater in the control group (median difference 9 mg (95% CI 4 to 14.5 mg); p<0.001). Proportional odds model showed that the study group has a lower probability of receiving opioid drugs (OR=0.26 (95% CI 0.10 to 0.68); p<0.001), while mastectomies have a higher probability of receiving them (OR=4.11 (95% CI 1.25 to 13.58); p=0.002). Pain scores in the study group were significantly lower throughout the follow-up period (p<0.001). Control group subjects needed earlier morphine rescue and had a higher risk of rescue dose requirement (p=0.002).
Interfascial serratus plane block reduces opioid requirements and is associated with better pain scores and lower and later rescue analgesia needs in the first 24 hours, compared with conventional intravenous analgesia, in breast surgery.
NCT02905149.
El objetivo principal de este estudio es el de explicar cómo se llevó a cabo el proceso de organizar, fomentar y desarrollar la práctica del béisbol bajo la dirigencia y respaldo de una asociación ...deportiva, en el periodo que va de 1920 a 1930. Las instituciones deportivas son espacios donde se construyen relaciones de poder, por tanto, se analizará qué hechos, estrategias y acciones fueron empleadas para fundar los organismos deportivos que tenían como fin último controlar los asuntos deportivos y financieros del béisbol capitalino.
The primary objective of this article is to study how baseball was organized, promoted and developed with the leadership and support of an athletic association in the years between 1920 and 1930. Athletic institutions are spaces that construct power relationships, and so this article will analyze the developments, strategies and actions that founded the sporting organizations controlling the athletics and finances of Mexico City baseball.
Chitosan-TiO2: A Versatile Hybrid Composite Anaya-Esparza, Luis Miguel; Ruvalcaba-Gómez, José Martín; Maytorena-Verdugo, Claudia Ivette ...
Materials,
02/2020, Letnik:
13, Številka:
4
Journal Article
Recenzirano
Odprti dostop
In recent years, a strong interest has emerged in hybrid composites and their potential uses, especially in chitosan–titanium dioxide (CS–TiO2) composites, which have interesting technological ...properties and applications. This review describes the reported advantages and limitations of the functionalization of chitosan by adding TiO2 nanoparticles. Their effects on structural, textural, thermal, optical, mechanical, and vapor barrier properties and their biodegradability are also discussed. Evidence shows that the incorporation of TiO2 onto the CS matrix improves all the above properties in a dose-dependent manner. Nonetheless, the CS–TiO2 composite exhibits great potential applications including antimicrobial activity against bacteria and fungi; UV-barrier properties when it is used for packaging and textile purposes; environmental applications for removal of heavy metal ions and degradation of diverse water pollutants; biomedical applications as a wound-healing material, drug delivery system, or by the development of biosensors. Furthermore, no cytotoxic effects of CS–TiO2 have been reported on different cell lines, which supports their use for food and biomedical applications. Moreover, CS–TiO2 has also been used as an anti-corrosive material. However, the development of suitable protocols for CS–TiO2 composite preparation is mandatory for industrial-scale implementation.
Abstract
Chemically modified starches are widely used as food additives to improve the appearance and physicochemical and biological properties of foods. The aim of this work is to chemically modify ...chayotextle (
Sechium edule
) starch by hydroxypropylation‐crosslinking, and evaluate the effects of degree of substitution (DS), swelling power (SP), solubility index (SI), pasting, thermal properties, and morphological and molecular characteristics. Polar‐Tex (modified maize starch) is used as control. The modified chayotextle starches (CHSs) exhibit a white color and DS values between 0.34% and 1.19% hydroxypropyl, dependening on propylene oxide concentration‐response. In addition, the SP and pasting properties are higher in modified CHS than in native CHS and Polar‐Tex. The SI and temperature of gelatinization of modified starches decrease compared to native sample. The morphology of native and modified CHS granules is spherical and oval. Fourier transform infrared and nuclear magnetic resonance studies confirm the structural modifications of CHS by hydroxypropylation‐crosslinking. Dual‐modified CHS can be potentially used as an additive in the food industry.
Painful shoulder is one of the most frequent consultation causes. Multiple treatments have been described to relieve pain, restore range of motion and improve functionality.
This randomised clinical ...trial was conducted in 60 patients. The treatment group received combined pulsed radiofrequency (PRF) on suprascapular nerve (SN) and axillary-circumflex nerve (ACN). The control group received PRF on SN only. The primary outcome was pain intensity measured by the Numerical Rating Scale (NRS). The secondary outcomes were the Shoulder Pain and Disability Index (SPADI), the Constant-Murley range of motion scale and Disability of the Arm, Shoulder and Hand (DASH) scale. The patients were monitored at the baseline visit and at 1, 3, 6 and 9 months. A mixed ordinal regression model was estimated to evaluate the association between the study group and pain measured with NRS.
A global decrease in pain at the end of the study was noted. The global baseline NRS was 8.4, and the global final NRS at 9 months of follow-up was 6.2. Combined PRF on SN and ACN was not associated with lower NRS pain scores compared to single SN PRF odds ratio (OR) =1.04, 95% confidence interval (CI) 0.91-1.20,
= 0.507. Secondary outcomes showed no significant differences: SPADI (OR = 1.04, 95% CI 0.92-1.18), Constant-Murley (OR = 1.01, 95% CI 0.90-1.14), DASH (OR = 1.04, 95% CI 0.92-1.17).
Combined PRF applied to SN and ACN was not superior to PRF applied to SN alone.
Ultrasound-assisted extraction (UAE) is widely used; however, the efficiency of extraction depends on the raw materials. Therefore, optimization of UAE must be investigated for each type of plant ...material. By-products from soursop fruit have not been studied as a source of bioactive compounds. In this work, the optimization of UAE conditions (extraction time (5, 10, and 15 min), pulse cycle (0.4, 0.7, and 1 s), and sonication amplitude (40%, 70%, and 100%)) for the extraction of phenolic compounds (soluble, hydrolyzable, condensed tannins, and total polyphenols) from soursop by-products (seed, peel, and columella) and pulp was evaluated using response surface methodology. The optimal conditions for UAE to obtain the highest total polyphenol content from by-products and pulp was dependent on the raw material. Peel resulted in the highest content of total polyphenols (187.32 mg/g dry matter DM) followed by columella (164.14 mg/g DM), seed (36.15 mg/g DM), and pulp (33.24 mg/g DM). The yield of polyphenolic content from peel and columella obtained with UAE was higher (32⁻37%) than conventional extraction for 2 h under stirring (14⁻16%). The contents of gallic acid (0.36⁻15.86 µg/g DM), coumaric acid (0.07⁻1.37 µg/g DM), and chlorogenic acid (9.18⁻32.67 µg/g DM) in the different parts of the fruit were higher in the extracts obtained by UAE compared with a conventional extraction method (0.08⁻0.61, 0.05⁻0.08, 3.15⁻13.08 µg/g DM, respectively), although it was dependent on the raw materials. Soursop by-products can be functionally important if they are used to extract bioactive compounds by UAE; a technology with high potential for commercial extraction on a large scale.
Nowadays, technology is present in any human activity. In education a central problem is the large amount of educational resources available on the web, these resources need to be organized and ...evaluated for their best use in a specific way in order to be used by children with learning disabilities, this through user profiles that help an adequate delivery. Each of these children belongs to learning communities within an inclusive digital ecosystem that generates time optimization for the acquisition of basic math skills. This work aims to bring technology closer to improve the knowledge of children with learning disabilities in basic mathematics through the use of learning paths, which help to guide the teacher in the needs of children. A series of resources are proposed in an orderly and progressive manner that help to mitigate the problems presented according to the profile of each student, each of these learning paths are based on workflows in order to deliver resources through services. This paper presents a case study in an elementary school in Mexico and finally the results obtained from the evaluation of the case study.
Linn. Malvaceae (HS) is characterized by its edible calyxes. The HS calyxes are widely used for cosmetic, food, and medicinal applications. According to ethnobotanical evidence, decoction, infusion, ...or maceration extracts from HS calyxes have been used in folk medicine to treat many ailments. Moreover, several in vitro and in vivo studies have demonstrated the pharmacological properties and potential human health benefits of HS consumption. On the other hand, the evaluation of the physiological effects and health benefits of HS in clinical studies is most challenging. Therefore, this narrative review summarizes and discusses the physiological effects and health benefits of HS calyxes reported in clinical trials. Preparations obtained from HS calyxes (extracts, infusions, decoction, teas, beverages, capsules, and pills) are used as non-pharmacological therapies to prevent/control diverse chronic non-communicable diseases. The most-reported HS health benefits are its antihypertensive, antidyslipidemic, hypoglycemic, body fat mass reduction, nephroprotective, antianemic, antioxidant, anti-inflammatory, and anti-xerostomic activities; these effects are associated with the phytochemicals found in HS. Moreover, no adverse effects were reported during the clinical trials. However, clinical studies exhibited some limitations; thus, further studies are required to validate the clinical efficacy of HS in large-scale studies with higher doses and a good experimental design.
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