Role Of Hydration Research Articles

Impact of Maternal Body Composition, Hydration, and Metabolic Health on Breastfeeding Success: A Comprehensive Review.

It is well established that breastfeeding provides significant health benefits for both the mother and the infant. The World Health Organization recommends initiating breastfeeding within the first hour after birth and continuing exclusive breastfeeding for 6 months. Successful breastfeeding is influenced not only by the proper physiological preparation of the body and the action of pregnancy-related hormones but also by the mother's overall health status. However, the role of maternal body composition and metabolic condition in breastfeeding success has received little attention. To better understand the impact of these factors on breastfeeding effectiveness, we reviewed the latest research on this topic, with particular emphasis on the role of hydration and lipid metabolism. Our narrative review indicates that the amount and distribution of water and adipose tissue are crucial for successful lactation and that various hormonal imbalances and metabolic disorders increase the risk of delayed breastfeeding initiation, shortened breastfeeding duration, or insufficient milk production. In light of our findings, measurement methods for assessing described parameters were also introduced. This article aims to review the effects of maternal body composition, hydration status, and metabolic and social factors on lactation and breastfeeding.

Vulnerability to heatwaves: a scoping review of prevention programs. Results from the ENBEL project

Abstract Background This study, conducted as part of the European ENBEL project (Horizon 2020), aims at synthesising the scientific evidence on heat health preventive measures targeting vulnerable populations, considering other environmental co-exposures, such as air pollution, wildfires and droughts. Methods A scoping review was performed on Medline and Embase (Ovid) through search terms on clinical and social vulnerabilities, health outcomes (morbidity, mortality, hospitalisation), heatwaves, droughts, air pollution, wildfires, and preventive measures. Records in English published between 2000 and 2023 were included and screened according to PRISMA guidelines. Results 8608 records were retrieved, 5895 of which screened after duplicate removal. 51 were included in the qualitative synthesis. The interventions, mainly targeting workers (from agriculture, healthcare, waste management, firefighting and military sectors) and school athletes, were the most evaluated preventive measures. The role of hydration, rest in the shade, cooling cloths and food, and acclimatisation procedures were highlighted for both groups. On the other hand, local prevention plans, mainly from high-income Countries, focused on the elderly, adults in poor health conditions, homeless and institutionalised people. The implemented measures concentrate on cooling interventions, provision of health care and social services, education and information campaigns. Regarding co-exposures, a study on prevention for firefighters and one on the implementation of Clean Air Centres in California for people vulnerable to heat and smoke were retrieved. A search of the grey literature will be performed to avoid publication bias. Conclusions There is still limited evidence on the effectiveness of preventive measures aimed at protecting vulnerable subgroups from heat-related health effects. The present findings can help orient the public health agenda and research priorities on climate changes adaptation measures. Key messages • Heatwaves are more frequent due to climate change, putting vulnerable population at risk. Developing plans and programs aimed at reducing negative health outcomes related to heat should be a priority. • Hydration, rest, and acclimatization procedures reduce heat-related illnesses in workers and athletes. Local prevention plans for the elderly show the role of education and information.

Clarifying and quantifying the driving force for the evolution of static yield stress of cement pastes

The static yield stress evolution of cement paste is mainly driven by the colloidal force and cement hydration, while their respective roles and contributions are not yet clear. In this paper, three stages are distinguished in the first 3 h evolution of static yield stress of cement pastes (with or without steel slag powder), including the initial stage (up to 30 min), the induction stage (30–60 min) and the acceleration stage (after 60 min). It was found that colloidal force mainly contributes to the large static yield stress before the acceleration stage. The role of hydration was found to have determined the evolution trend of the static yield stress since the induction stage, which was identified by quantifying the interaction force between the C-S-H instead of solely considering C-S-H volume fraction. Based on quantitative results, how the physico-chemical parameters control the static yield stress evolution at each stage is identified comprehensively. This study provides a deep and quantitative understanding of structural build-up process of cement paste.

The role of hydration in atmospheric salt particle formation.

New-particle formation from condensable acid and base molecules is a ubiquitous phenomenon in the atmosphere. The role of water in salt particle formation is not fully understood as it can stabilize or destabilize cluster structures, which leads to non-linear effects on cluster formation dynamics. In the studied systems, increased relative humidity can enhance the particle formation for up to four orders of magnitude in the case of nitric acid, but it can also slightly reduce the particle formation in the cases of sulfuric acid and methanesulfonic acid. As the effect of relative humidity in salt particle formation varies many orders of magnitude depending on the acid and base molecules, neglecting hydration or using the same value for different systems may introduce remarkable inaccuracies in large-scale models.

Complex Oxide Nanoparticle Synthesis: Where to Begin to Do It Right?

Synthesis of advanced ceramics requires a high degree of control over the particle size and stoichiometry of the material. When choosing a synthesis method for complex oxides it is important to begin with the correct precursors and solvents to achieve high purity nanoparticles. Here, we detail the selection process for precursors and solvents for liquid-phase precipitation synthesis. Data for metal nitrate, chloride, acetate, and oxalate precursors has been compiled to assist future synthesis. The role of hydration within the precursors is discussed as it affects the final stoichiometry of the material. Melting temperatures are also compiled for these compounds to assist in material selection. The solubility of the precursors in different solvents is examined to determine the correct solvent during synthesis. As an example, using the methodology presented here, two different materials are synthesized based on commonly available precursors. A catalyst based on a quaternary perovskite and an advanced ionic conductor based on a high entropy fluorite oxide are synthesized using precipitation methods and their characterization is detailed.

Equine hoof wall: Structure, properties, and bioinspired designs

The horse hoof wall exhibits exceptional impact resistance and fracture control due to its unique hierarchical structure which contains tubular, lamellar, and gradient configurations. In this study, structural characterization of the hoof wall was performed revealing features previously unknown. Prominent among them are tubule bridges, which are imaged and quantified. The hydration-dependent viscoelasticity of the hoof wall is described by a simplified Maxwell-Weichert model with two characteristic relaxation times corresponding to nanoscale and mesoscale features. Creep and relaxation tests reveal that the specific hydration gradient in the hoof keratin likely leads to reduced internal stresses that arise from spatial stiffness variations. To better understand realistic impact modes for the hoof wall in-vivo, drop tower tests were executed on hoof wall samples. Fractography revealed that the hoof wall's reinforced tubular structure dominates at lower impact energies, while the intertubular lamellae are dominant at higher impact energies. Broken fibers were observed on the surface of the tubules after failure, suggesting that the physically intertwined nature of the tubule reinforcement and intertubular matrix improves the toughness of this natural fiber reinforced composite. The augmented understanding of the structure-mechanical property relationship in dynamic loading led to the design of additively manufactured bioinspired structures, which were evaluated in quasistatic and dynamic loadings. The inclusion of gradient structures and lamellae significantly reduced the damage sustained in drop tower tests, while tubules increased the energy absorption of samples tested in compact tension. The samples most similar to the hoof wall displayed remarkably consistent fracture control properties. Statement of significanceThe horse hoof wall, capable of withstanding large, repeated, dynamic loads, has been touted as a candidate for impact-resistant bioinspiration. However, our understanding of this biological material and its translation into engineered designs is incomplete. In this work, new features of the horse hoof wall are quantified and the hierarchical failure mechanisms of this remarkable material under near-natural loading conditions are uncovered. A model of the hoof wall's viscoelastic response, based on studies of other keratinous materials, was developed. The role of hydration, strain rate, and impact energy on the material's response were elucidated. Finally, multi-material 3D printed designs based on the hoof's meso/microstructure were fabricated and exhibited advantageous energy absorption and fracture control relative to control samples.

COVID-19 and Nutrition: Summary of Official Recommendations.

Medical nutrition therapy may have a key role in the COVID-19 pandemic. Given the spread of misinformation, the present review organizes and summarizes nutrition recommendations regarding COVID-19, serving as a reference guide for health professionals. Nineteen official recommendations were included of international, US, Asian, European, Canadian, and Australian origin on (i) lactation, (ii) nutrition during quarantine, (iii) nutrition in high-risk groups, (iv) nutrition for recovery at home, and (v) nutrition in hospital. Breastfeeding is encouraged, and the role of hydration and the adoption of a healthy diet during quarantine are emphasized. Older people and/or people with comorbidities should be checked for malnutrition and follow a healthy diet. For patients recovering at home, hydration, protein, and energy intake should be ensured. For hospitalized patients, early feeding with a priority on enteral route is recommended.

Hydrate as a by-product in CO2 leakage during the long-term sub-seabed sequestration and its role in preventing further leakage.

Subsurface sequestration of CO2 produced by industrial production is an effective way to control the excessive emission of greenhouse gases and alleviate the potential global warming. However, CO2 leakage is likely to occur in its long-term sub-seabed sequestration, posing a great threat to the marine environment and the marine ecology. Previous investigations mainly focused on the implementation of CO2 sequestration project, ignoring the subsequent potential environmental hazards such as CO2 leakage, let alone the post-treatment of these accidents. In the present work, secondary sequestration mechanism of hydrate-bearing sediment for leaked CO2 was explored, and the effect of two important factors (hydrate saturation and sediment thickness) on it was then analyzed. It is expected to provide reference for exploring engineering measures to secondary sequestrate the leaked CO2 and avoid the catastrophic environmental accidents. The experimental results demonstrate that the role of hydrate in secondary sequestration for leaked CO2 is mainly due to its filling and occupation of the migration channels in sediment. In addition, due to the secondary sequestration of CO2 hydrate, change in seawater pH value caused by dissolution of leaked CO2 in water can be significantly weakened. Besides, with the increasing hydrate saturation and sediment thickness, CO2 hydrate plays a progressively obvious role in secondary sequestration of CO2 and avoiding great change in the marine environment. In this way, the leaked CO2 can be secondary sequestrated by designing/optimizing the characteristics of hydrate-bearing sediment. The investigation demonstrates that most of the leaked CO2 can be secondary sequestrated only when the hydrate saturation exceeds 0.30 and/or thickness of hydrate-bearing sediment exceeds 3.0cm. The experimental investigation herein can provide technical support for avoiding environmental disasters caused by the leakage of long-term sequestrated CO2.

28-Year-Old Man With Joint Pain

28-Year-Old Man With Joint Pain

The role of hydration in health, disease and performance

The role of hydration in health, disease and performance

Role of Hydration in Photoexcited Electron Transfer between a Gold Nanocluster and a Water Molecule

Role of Hydration in Photoexcited Electron Transfer between a Gold Nanocluster and a Water Molecule

Interaction of Basalt with Calcium Ion and Their Role in Hydration, Rheology and Strength Development of Cement Paste

Interaction of Basalt with Calcium Ion and Their Role in Hydration, Rheology and Strength Development of Cement Paste

Role of Hydration in Magnesium versus Calcium Ion Pairing with Carboxylate: Solution and the Aqueous Interface

The binding of group II metal cations such as Ca2+ and Mg2+ has been largely categorized as electrostatic or ionic using carboxylate symmetric and asymmetric stretching frequency assignments that have been historically used with little regard for the solvation environment of aqueous solutions. However, given the importance of these cations and their binding mechanisms related to biological function and in revealing surface enrichment factors for ocean to marine aerosol transfer, it is imperative that a deeper understanding be sought to include hydration effects. Here, infrared reflection-absorption and Raman spectra for surface and solution phase carboxylate binding information, respectively, are compared against bare (unbound) carboxylate and bidentate Zn2+:carboxylate spectral signatures. Spectral non-coincidence effect analysis, temperature studies, and spectral and potential of mean force calculations result in a concise interpretation of binding motifs that include the role of mediating water molecules, that is, contact and solvent-shared ion pairs. Calcium directly binds to the carboxylate group in contact ion pairs where magnesium rarely does. Moreover, we reveal the dominance of the solvent-shared ion pair of magnesium with carboxylate at the air-water interface and in solution.

Recognition of N6-Methyladenosine by the YTHDC1 YTH Domain Studied by Molecular Dynamics and NMR Spectroscopy: The Role of Hydration.

The YTH domain of YTHDC1 belongs to a class of protein "readers", recognizing the N6-methyladenosine (m6A) chemical modification in mRNA. Static ensemble-averaged structures revealed details of N6-methyl recognition via a conserved aromatic cage. Here, we performed molecular dynamics (MD) simulations along with nuclear magnetic resonance (NMR) and isothermal titration calorimetry (ITC) to examine how dynamics and solvent interactions contribute to the m6A recognition and negative selectivity toward an unmethylated substrate. The structured water molecules surrounding the bound RNA and the methylated substrate's ability to exclude bulk water molecules contribute to the YTH domain's preference for m6A. Intrusions of bulk water deep into the binding pocket disrupt binding of unmethylated adenosine. The YTHDC1's preference for the 5'-Gm6A-3' motif is partially facilitated by a network of water-mediated interactions between the 2-amino group of the guanosine and residues in the m6A binding pocket. The 5'-Im6A-3' (where I is inosine) motif can be recognized too, but disruption of the water network lowers affinity. The D479A mutant also disrupts the water network and destabilizes m6A binding. Our interdisciplinary study of the YTHDC1 protein-RNA complex reveals an unusual physical mechanism by which solvent interactions contribute toward m6A recognition.

Role of hydration and micellar shielding in tuning the structure of single crystalline iron oxide nanoparticles for designer applications

AbstractDifferent physicochemical properties of nanoscale iron oxides have been useful in enabling various applications. Desirable biochemical, magnetic, and catalytic properties result from the structure and size of the iron oxide polymorph particles. To produce monodispersed single crystalline particles, PS‐b‐P2VP reverse micelle templating has proven to be a convenient low temperature method. Here, Raman spectroscopy and quantitative nanomechanical mapping analysis are used to provide a full picture of the formation and transformation processes that occur within the reverse micelle templates. Surprisingly, shielding of the hygroscopic FeCl precursor salt against hydration rather than complexation with the pyridine is responsible for the formation of ‐FeO particles. Additionally, micelle shielded nanoparticles not only exhibited a uniform size distribution and ordered dispersion, but also an increased transition temperature for the to ‐phase transition, up to 700 C, making them much more stable than traditional nanoparticles. Using these key understandings of particle formation, nanoparticles can be tuned with composition ranging from a purely spinel (‐FeO, FeO) to a purely hexagonal phase (‐FeO), and varying ratios of the three phases, while maintaining a fixed particle size. Modifying parameters offer intriguing opportunities to tailor designer iron oxide nanoparticles for targeted applications with a facile and scalable technique.

The Role of Hydrates, Competing Chemical Constituents, and Surface Composition on ClNO2 Formation.

Atomic chlorine (Cl•) affects air quality and atmospheric oxidizing capacity. Nitryl chloride (ClNO2) - a common Cl• source-forms when chloride-containing aerosols react with dinitrogen pentoxide (N2O5). A recent study showed that saline lakebed (playa) dust is an inland source of particulate chloride (Cl-) that generates high ClNO2. However, the underlying physiochemical factors responsible for observed yields are poorly understood. To elucidate these controlling factors, we utilized single particle and bulk techniques to determine the chemical composition and mineralogy of playa sediment and dust samples from the southwest United States. Single particle analysis shows trace highly hygroscopic magnesium and calcium Cl-containing minerals are present and likely facilitate ClNO2 formation at low humidity. Single particle and mineralogical analysis detected playa sediment organic matter that hinders N2O5 uptake as well as 10 Å-clay minerals (e.g., Illite) that compete with water and chloride for N2O5. Finally, we show that the composition of the aerosol surface, rather than the bulk, is critical in ClNO2 formation. These findings underscore the importance of mixing state, competing reactions, and surface chemistry on N2O5 uptake and ClNO2 yield for playa dusts and, likely, other aerosol systems. Therefore, consideration of particle surface composition is necessary to improve ClNO2 and air quality modeling.

Tea for Sport and Fitness: A Scoping Review

An extended evidence-base has evaluated the role of nutrition in sports and fitness. The roles of hydration are also well covered but within this the specific roles of tea are not yet discussed widely. Subsequently, the present scoping review aims to evaluate the potential roles of tea in relation to aspects of sports and fitness performance. Searches for human observational studies and clinical trials were undertaken in PubMed. gov, Science Direct and Google Scholar databases. Sixteen relevant publications were identified with five focusing on outcomes related to body weight, composition, adiposity, or fat oxidation. Other reported outcomes included strength, muscle strength, or mass, oxidative/antioxidant and hydration status, salivary antibacterial capacity, and balance performance. Evidence appeared strongest for green and matcha tea with the typical ingestion of 2 to 3 cups daily being associated with improved body composition, antioxidant profile, sleep quality (low caffeine green tea), salivary defence mechanisms against microbial pathogens and reduced adiposity. From a general stance tea drinking could be an alternative beverage choice for those keeping active, providing a source of fluids and polyphenols. Older populations, those undertaking activities in colder climates, or for prolonged durations e.g., long-distance walking may benefit from personalised hydration programmes that could involve tea drinking. Larger and longer randomised controlled trials using tea in beverage form rather than as extracts or supplements are now warranted to further advance science in this field.

N-Glycan Modifications with Negative Charge in a Natural Polymer Mucin from Bovine Submaxillary Glands, and Their Structural Role.

Bovine submaxillary mucin (BSM) is a natural polymer used in biomaterial applications for its viscoelasticity, lubricity, biocompatibility, and biodegradability. N-glycans are important for mucin stability and function, but their structures have not been fully characterized, unlike that of O-glycans. In this study, BSM N-glycans were investigated using liquid chromatography-tandem mass spectrometry. The microheterogeneous structures of 32 N-glycans were identified, and the quantities (%) of each N-glycan relative to total N-glycans (100%) were obtained. The terminal N-acetylgalactosamines in 12 N-glycans (sum of relative quantities; 27.9%) were modified with mono- (10 glycans) and disulfations (2 glycans). Total concentration of all sulfated N-glycans was 6.1 pmol in BSM (20 µg), corresponding to 25.3% of all negatively charged glycans (sum of present N-glycans and reported O-glycans). No N-glycans with sialylated or phosphorylated forms were identified, and sulfate modification ions were the only negative charges in BSM N-glycans. Mucin structures, including sulfated N-glycans located in the hydrophobic terminal regions, were indicated. This is the first study to identify the structures and quantities of 12 sulfated N-glycans in natural mucins. These sulfations play important structural roles in hydration, viscoelasticity control, protection from bacterial sialidases, and polymer stabilization to support the functionality of BSM via electrostatic interactions.

Weighted Spacer Design for Elevated Temperature Conditions to Mitigate Barite Settling by Identifying Suitable Viscosifier

Any successful primary cementing operation at elevated temperature condition requires an efficient displacement of fluid surrounding the casing by cement slurry. In such conditions the cement slurry should be designed in such a way that it should be compatible with both cement and drilling mud. To achieve these requirements we designed the cement slurry with weighted spacer. Spacer is a barrier between cement & mud so that they should not mix with each other, also all these fluids should be incompatible inorder to avoid cement aggregation. The displacement efficiency during cementation is directly dependent on discharge rate, but however due to formation fracture pressure constraints, the discharge rate is limited, hence designing spacer becomes very crucial. This phenomenon becomes more pronounced at higher temperature as turbulent flow efficiency reduces due to the presence of weighting agent. The drive of the present work is to identify a suitable viscosifier to avoid settling of weighing agents in spacer and to maintain the stability of rheology admixture at elevated temperature condition. Laboratory tests were performed for compatible deformation and flow of matter with cement slurry-spacer-mud at temperature range (80-140°C) on a rotational viscometer as per the procedure of API RP 10B-2. The volumetric proportions of the cement slurry/spacer and spacer/mud admixtures were prepared with various ratios: 95/5, 75/25, 50/50, 25/75, and 5/95. Rheological compatibility of fluids (cement & spacer and mud & spacer) is evaluated by computing the R-Index Value (R) which is calculated by subtracting highest 100 rpm reading of admixture from highest rpm reading for an individual fluid for the given range of elevated temperature condition. The calculated R-Index Value can then be utilized to comment on fluid compatibility. After finalization of chemical compatibility, rheological hierarchy was achieved by incorporating the friction pressure loss with respect to discharge rate of an individual fluid for the given range of elevated temperature condition. The spacer system used achieved stable compatibility and efficient rheological hierarchy at elevated temperature cementing conditions. In addition, by comparing the results between the two different spacer systems, the role of hydration in attaining rheological compatibility is computed. This study will in turn prove helpful in figuring out the better spacer system which will play a vital role for better displacement and cementation quality.

How Hydration Affects the Microscopic Structural Morphology in a Deep Eutectic Solvent.

Recently, it has been observed that choline chloride ([Ch][Cl]) based deep eutectic solvents (DESs) may possess nanostructures in which chloride ions play a major role by providing a backbone for the bridged hydrogen bond network. In this article, we present a fundamental study on the role of hydration on the nanostructure of a [Ch][Cl] based DES, ethaline. In this molecular dynamics investigation, we observe a nonlinear change in the structural morphology of ethaline on gradual addition of water. The initiation of disruption of the native structure of the DES at 40 mol % of water is clearly observed, after which the increasing dilution rapidly destructs the long-range as well as short-range intermolecular interactions existing between the constituent species of pure ethaline. Herein, we find that, at very high hydration level, chloride ion no longer acts as a bridge between the choline cation and ethylene glycol, as it forms strong hydrogen bond with water. Intriguingly, the strengthening of hydrogen bonding interactions among the ethylene glycol molecules is observed on increasing hydration level. Hence, it is predicted that segregation of ethylene glycol can occur in the pool of aqueous mixtures of [Ch][Cl] at very high hydration level.