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We systematically investigate the spin-dependent transport properties of fully ferromagnetic (Ga,Fe)Sb/GaSb/(In,Fe)Sb and (Ga,Fe)Sb/(In,Fe)As p–n junctions grown by low-temperature molecular beam epitaxy. The (Ga,Fe)Sb/GaSb/(In,Fe)Sb p–n junctions show high Curie temperature (170–310 K) and rectifying characteristics. The polarity and magnitude of magnetoresistance of the (Ga,Fe)Sb/GaSb/(In,Fe)Sb junctions strongly depend on the GaSb spacer thickness (t). Large positive magnetoresistance (MR, 58%) and negative MR (−1.6%) were observed at 3.7 K for the samples with t = 2 and 4 nm, respectively. When the n-type (In,Fe)Sb layer was replaced by the n-type (In,Fe)As, giant MR over 500% was observed, which can be explained by spin-valve and spin-splitting effects. Our results shed light on rich spin-transport physics observed in fully ferromagnetic p–n junctions. [ABSTRACT FROM AUTHOR]

The assurance of food safety is paramount, especially concerning ready‐to‐drink products like milk tea. This research sought to gauge the safety perceptions of both student and office worker demographics towards this beverage using a combination of direct and online surveys. The data reveals that 84.6% of respondents express significant concerns about hygiene and safety standards within milk tea consumption. A substantial portion of these consumers indicates a willingness to expend between 2‐4 USD per serving. Alarmingly, analyses of several popular milk tea brands have identified considerable concentrations of pathogenic microorganisms: Coliform counts were observed at 108, E. Coli at 1010, Pseudomonas at 108, and Salmonella at 104 (CFU/mL). A primary suspected avenue of this microbiological contamination appears to be ice, which exhibits levels exceeding nationally stipulated safety thresholds. [ABSTRACT FROM AUTHOR]

In this study, we used a synthetic aerogel based on PVA/agar/maltodextrin to remove the antibiotic ciprofloxacin (CFX) from aqueous media. Response surface method (RSM) is used to study the relationship between the factors affecting the adsorption process, thereby optimizing the adsorption efficiency, and making decisions on improving the adsorption process better sub. The research results obtained are as follows: pH2, initial CFX concentration 51 mg L-1, adsorbent dosage 0.16 g L-1, adsorption time 120 min, and temperature 51.5 °C reached the maximum adsorption capacity. The maximum additive is 38.63 mg g-1. The experimental data agree with the pseudo-quadratic kinetic model and the Langmuir and Temkin isotherm models. The composite aerogel adsorbent (AE) in this study is a potential candidate for adsorbent to remove antibiotic contamination in aqueous media. [ABSTRACT FROM AUTHOR]