Articles Related to HA

Cu2FeSnSe4 (CFTSe) thin film were synthesized on glass substrate by thermal evaporation method at Ts=400° C, starting from elemental powders mixed by a mechanical alloying process. The structural, morphological, compositional, optical and electrical properties of CFTSe semiconductor have been investigated by X-ray diffraction (XRD), Raman spectroscopy, scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy dispersive X-ray analysis (EDAX), spectroscopic ellipsometry (SE) and Van Der Pauw technique, respectiv

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Recycling is an important tool to cope with and sustainably manage rapidly increasing waste generation, and promoting local practices such as informal recycling is vital in developing countries. is study identies determinants of informal recycling that residents of Kathmandu Valley, Nepal practice by selling the recyclable waste to scrap dealers. e data comes from a households survey conducted with around 1200 households in the Valley in 2012. Informal recycling is important because it complements inecient and expensive waste collection services, diverts waste from the landll site, and helps the city to develop sustainably. We found that people who compost are 11.8 to 12.8 percent more likely to recycle in comp

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Desalination has become one of the main alternatives to compensate for water shortages. Although seawater desalination is expensive and has many environmental risks, it is still an important option to compensate for water shortages in Egypt. The discharge of liquid waste (especially heavy metals) from the station into the sea has a negative impact on the water, so the spatial distribution of heavy metals (lead, cadmium, and copper) shows high concentrations near the outlets of both AlQusayr and the port of Al-Qusayr. Hamata desalination plants in the southern Red Sea. As for higher quantities of heavy metals - higher than the standard values - such as (Cu, Pb, Cd), they are classified as seawater pollutants, whether they show evidence of toxicity or not. The study demonstrated that seaweed has bio-absorption properties and can effectively absorb heavy metals from the surrounding water, and thus it can serve as a bio-indicator in tools for monitoring the degree of pollution, as well as evaluating water desalination activities

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In Ghana, where pristine waters once flowed freely, a dark tide of transboundary pollution casts a shadow. Illegal mining, a hydra-headed monster, spews its venom into rivers and streams, poisoning ecosystems and threatening communities across borders. This qualitative study, based on a meticulous analysis of 45 key papers, dives deep into the causes and consequences of this environmental scourge.

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The present paper contains experimental analysis of the spatiotemporal structure of atmospheric pressure dielectric barrier discharge (DBD) in a packet-pulse excitation mode widely used as an effective tool for plasma modification of various media. The motivation is the need to optimize the conditions for DBD plasma obtaining with a homogeneous diffuse structure. It is shown that for a discharge gap of the millimeter range (1–3 mm) in atmospheric air, under certain conditions, a number of new plasma phenomena are possible - the effects of an increase in the density (total number) of filamentary discharges over time, both unchanged and with a decrease in the area of the filaments, as well as the formation of complex space-time structures. An interpretation of this phenomenon is proposed. Homogeneous diffuse discharges are obtained in a standard electrode configuration with a single dielectric

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The aim of controlling/regulating cellular processes by surface patterning of biomaterials is a crucial concept in emerging research fields, where the precise fabrication of micro-nano surface topographies is required at manufacturing scales to meet consumer demand. Photolithography is typically employed for surface patterning; however, the high cost, process complexity, and lack of environmentally friendly and sustainable methodologies represent steep barriers for many researchers. Soft lithographic methods have been utilised extensively as a potential alternative for traditional photolithography, yet a photolithographic step is still required for initial template fabrication. Here, we demonstrate the use of repurposed optical consumer items such as DVDs, diffraction glasses, and gratings that would otherwise be thrown away after their useful lives, being used here as a sustainable approach as templates for the formation of complex nano-patterns. By replicating these templates in polydimethylsiloxane (PDMS) and polylactic acid (PLA), we show the varied interactions of human aortic smooth muscle cells (HAoSMC) to these surfaces. Notably, it was demonstrated that, in comparison to nonpatterned substrates, HAoSMC interaction (adhesion, spreading, and viability) was higher on DVD patterned surfaces compared to diffraction glass and grating patterned surfaces according to the results from cell metabolic activity (MTT and Alamar Blue), and proliferation (total DNA) assays. We demonstrate that a simple, reusable, inexpensive, yet robust technology could be a powerful tool in improving our understanding of cell-surface interactions and for the potential development of medical devices with micro- and nanoscale low or high adhesion features

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Gestational diabetes mellitus (GDM) is associated with an increased maternal and fetal risk of complications. Other than lifestyle modifications and diet, little prevention can be done towards this maternal complication. Through a preclinical approach and a retrospective clinical trial, we investigated the effects of maternal supplementation with a nutraceutical composition based on resveratrol (RSV) and alpha-lipoic acid (ALA) on insulin resistance and GDM status

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Moringa leaf (Moringa oleifera) is referred to as the “natural nutrition of the tropics”, and in the Philippines, as “mothers’ best friend”. It possesses many health benefits and is also used in disease prevention and therapy. The enhancement of moringa’s natural potency is a scientific challenge that has yet to be thought of. We found enhanced inherent characteristics in the moringa leaf by irradiating using our recently invented 2-6µm mid-infrared ray generating atomizer (MIRGA). The achieved benefits were a more desirable taste and aroma, and an enhanced shelf life, thus increasing the potential transportation distance, quality, and palatability. This scientific achievement was supported by suitable instrumentations and sensory evaluation

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The main aim of this project is to formulate and evaluate Clindamycin peel-off gel face mask against Acne vulgaris. Peel off gel mask of Clindamycin phosphate was formulated using different excipients like Triethanolamine, Carbopol, Polyvinyl Alcohol, Glycerine, Xanthan gum, and Benzyl alcohol. Formulation of different composition of polymer was formulated and their pH, extrudability, homogeneity, spreadability, viscosity, washability and other parameters like drug content, permeability and drug release were evaluated. The result showed that the concentration of PVA and Carbopol which are the main polymers used in the formulations had effect on the drug content, drug release, permeability, spreadability and other parameters. The peel off mask prepared by using different concentration of these two polymers showed satisfactory result in all the evaluated parameters.

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A trial was carried out on growing lambs to compare conventional protein supplementation of sugarcane with soybean meal with Saccharomyces cerevisiae enrichment produced by solid-state fermentation. Yeast enrichment enabled sugarcane stalks to increase their crude protein content from 4% to 12%. No difference was obtained between these two forms of supplementation on the daily growth of 80.2 and 76.8 g per day for enriched and non-enriched sugarcane respectively.

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The study investigated the effects of supplementing the same level of concentrate in different seasons on the growth performance, rumen fermentation, serum biochemical index, and rumen microflora changes in yaks, to provide guidance on accurate feeding of yaks in cold and warm seasons. 12 healthy yaks weighing (124.21±15.64) kg were selected for the experiment, with a warm season group from August to October and a Cold season supplemental feeding group from October to December. The results showed that the mean daily gain was significantly higher in the warm season grazing group than in the cold season grazing group (p<0.05). Rumen fermentation, serum biochemical index, and rumen microflora changes also varied significantly between the two groups (p<0.05).

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The use of surface electromyography (sEMG) signals for clinical diagnosis is well appreciated in the medical field. However, the use of sEMG signals for the control of powered prosthetic limbs is still regarded as a futuristic idea. Past and present studies have focused more on the upper limb (hand) as compared to the lower limb (leg). The challenges associated with the controlling leg movement include designing for both balance and locomotion. After amputation, the muscle orientation and alignments on the residual stump changes as some of the anatomical landmarks are changed during surgical procedure. To achieve locomotion, some amputees, generally from third-world nations, use passive mechanical prosthetic limbs with a fixed ankle.

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Grapes (Vitis vinifera L.) are among the most commonly cultivated horticultural crops on the earth covering an area of 7.5 million hectares with around 70 million tons production. Grapes being highly nutritious are majorly utilized in making beverages or used as fresh and raisin. In today’s world, the most concerned topic in agriculture is continuous change in climatic conditions leading to several negative social, ecological, economical and biological problems. Grapes are delicate fruits, their vines are sensitive towards extremes in temperature, water, heat, duration and intensity of light exposure as well as carbon dioxide and humidity alterations. Hence, one can shift to drought and heat tolerant varieties and certain training and pruning methods suitable to the prevailing environmental conditions. Vineyard management practices, including farm mechanization can be amended for improving the gains, while reducing the input

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In the past few years, E-cigarettes (or vaping) are getting the popularity among the youth in Bangladesh. This is critical as it may lead to an increase in the number of smokers in future. The study aimed to identify the trend of E-cigarette smoking, habitual pattern of E-cigarette smokers, and their perception and experiences of health hazards. A cross-sectional mixed methods study was conducted from April to November 2020 in Dhaka and Chittagong cities. A total of 370 E-cigarette smoker aged 18 and above years, were surveyed face-to-face using a semi-structured questionnaire

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This study investigates the natural radioactivity levels in the Abha and Al-Baha region, a mountain range with a variety of rock types, ranging from calcareous to granitic. Thirty rock samples were collected, 15 from the Abha mountains and 15 from the Al-Baha mountains

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Self-organized anodic porous alumina films with hexagonal pore lattice have attracted a considerable attention for biological arrays and confinement of various organic probes dyes in solutions. A molecular structure with axial symmetry in bis-heterocyclic indole chains and conjugate system, such as cyanine fluorophore Cy3 dye, was investigated here with respect to its fluorescence when loaded in the anodic alumina pores.

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The collection of human odor volatiles is of interest to forensic applications as a path to investigate canine scent discriminations in legal investigations. A study using a selected array of previously identified human odor compounds has been conducted to determine the retention and release capabilities of five (5) natural and synthetic fabric types, cotton (mercerized fabric and gauze matrix), polyester, rayon and wool.

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Anodisation of pure titanium has been carried out in sulphuric and in phosphoric acid solutions at potentials ranging from 50 to 150V. The SEM and AFM morphological analysis indicates that, within this potential range, oxidation in sulphuric acid solution produces better developed mesoporous oxide layers.

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We investigated a method for preparation of ordered nanopore arrays with the interpore distance of 60 nm by guided self-organization of anodic aluminum oxide with a prepatterned array of pits in the starting Al film.

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The design of an electrochemical reactor for the preparation of self-supported comparatively thin (up to 10 μm) and large area (up to 50 cm2) anodic alumina membranes is described allowing growth of porous alumina at high applied potential (up to 150 V) without burning.

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Vertical Cu2ZnSnS4 (CZTS) nanowire arrays have been synthesized via two-step electroplating method into anodized aluminum oxide template. For deposition of CZTS nanowires, anodized aluminum oxide (AAO) was used as the growth mask for the growth of the nanowires. AAO templates with hole sizes of 70 nm in diameter were used in the experiments.

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Anodic aluminum oxide doped with vanadyl citrate chelate complex anions was formed by a two-step self-organized anodization in 2 wt. % sulfuric acid containing 0.04 M V2O5 and 0.08 M citric acid at voltage range 13-23 V, and at 0 and 15 oC. The combination of two temperatures and at least four voltages (depending on the applied temperature) was applied as the operating conditions of anodization.

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