The aim of this study was to assess the prevalence of pet ownership and the relationship between pet ownership and people’s socioeconomic positions examined at the individual, household, and regional ...levels among a large representative sample of residents in China. A cross-sectional study was conducted among six cities in China, incorporating a total of 5782 male residents along with their families in the analysis. The multilevel logistic regression models were employed to determine associations between socioeconomic deprivation and pet ownership prevalence. Pet-keeping is common in China as about 21.6% (95% C.I. 18.4%−24.0%) of households in China owned pets. Male participants aged over 55 years (OR: 0.78, 95%C.I.0.66–0.98) and those who are married (OR: 0.79, 95%C.I. 0.65–0.97) exhibit a reduced likelihood of pet ownership when contrasted with individuals younger than 25 years and those who have never married. Participants originating from medium or large urban centers demonstrate a significantly elevated likelihood of pet ownership, with an odds ratio of 1.98 (95%C.I. 1.71–2.30), when compared to their rural counterparts. Households residing in areas with medium population density have a 1.73 (95%C.I. 1.21–2.19) times higher likelihood to own a pet compared to those in regions of low population density. Elevated levels of socioeconomic deprivation, both at home and regionally, are associated with a substantially reduced probability of pet ownership. This study provides concrete evidence to the prevalence of pet ownership and its demographic distribution in China. These findings suggest that keeping pets might be more available to people with higher socioeconomic status.
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GEOZS, IJS, IMTLJ, KILJ, KISLJ, NLZOH, NUK, OILJ, PNG, SAZU, SBCE, SBJE, UILJ, UL, UM, UPCLJ, UPUK, ZAGLJ, ZRSKP
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The tissue-level Young’s modulus of trabecular bone is important for detailed mechanical analysis of bone and bone-implant mechanical interactions. However, the heterogeneity and ...small size of the trabecular struts complicate an accurate determination. Methods such as micro-mechanical testing of single trabeculae, ultrasonic testing, and nanoindentation have been used to estimate the trabecular Young’s modulus. This review summarizes and classifies the trabecular Young’s moduli reported in the literature. Information on species, anatomic site, and test condition of the samples has also been gathered. Advantages and disadvantages of the different methods together with recent developments are discussed, followed by some suggestions for potential improvement for future work. In summary, this review provides a thorough introduction to the approaches used for determining trabecular Young’s modulus, highlights important considerations when applying these methods and summarizes the reported Young’s modulus for follow-up studies on trabecular properties.
The spongy trabecular bone provides mechanical support while maintaining a low weight. A correct measure of its mechanical properties at the tissue level, i.e. at a single-trabecula level, is crucial for analysis of interactions between bone and implants, necessary for understanding e.g. bone healing mechanisms. In this study, we comprehensively summarize the Young’s moduli of trabecular bone estimated by currently available methods, and report their dependency on different factors. The critical review of different methods with recent updates is intended to inspire improvements in estimating trabecular Young’s modulus. It is strongly suggested to report detailed information on the tested bone to enable statistical analysis in the future.
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GEOZS, IJS, IMTLJ, KILJ, KISLJ, NLZOH, NUK, OILJ, PNG, SAZU, SBCE, SBJE, UL, UM, UPCLJ, UPUK, ZRSKP
Rational design and bottom-up synthesis based on the structural topology is a promising way to obtain two-dimensional metal–organic frameworks (2D MOFs) in well-defined geometric morphology. Herein, ...a topology-guided bottom-up synthesis of a novel hexagonal 2D MOF nanoplate is realized. The hexagonal channels constructed via the distorted (3,4)-connected Ni2(BDC)2(DABCO) (BDC = 1,4-benzenedicarboxylic acid, DABCO = 1,4-diazabicyclo2.2.2octane) framework serve as the template for the specifically designed morphology. Under the inhibition and modulation of pyridine through a substitution–suppression process, the morphology can be modified from hexagonal nanorods to nanodisks and to nanoplates with controllable thickness tuned by the dosage of pyridine. Subsequent pyrolysis treatment converts the nanoplates into a N-doped Ni@carbon electrocatalyst, which exhibits a small overpotential as low as 307 mV at a current density of 10 mA cm–2 in the oxygen evolution reaction.
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IJS, KILJ, NUK, PNG, UL, UM
•Polysaccharides (BPSs) were obtained from fresh bitter gourd by TPP and UAE methods.•TPP and UAE greatly affected the physicochemical and biological properties of BPSs.•BPS-W had excellent ...antioxidant, α-amylase and α-glycosidase inhibitory activities.•BPS-A with the lowest Mws showed the best bile acid-binding capacity among the BPSs.
In this study, polysaccharides (BPSs) were obtained from fresh bitter gourd (Momordica charantia L.) by room temperature extraction techniques, including three-phase partitioning (TPP) and ultrasonic-assisted extraction (UAE) performed in different solvents. The results showed that the extraction methods had significant influence on the extraction yield, chemical composition, weight-average molecular weight (Mw), monosaccharide composition, preliminary structural characterization and microstructure of the BPSs. The BPS-W sample obtained from the bitter gourd residue via UAE in distilled water had a higher uronic acid content (24.22%) and possessed stronger antioxidant capacities and α-amylase and α-glycosidase inhibitory activities than BPS-C extracted with UAE in citric acid, BPS-A extracted with UAE in 1.25 mol/L NaOH/0.05% NaBH4, and BPS-J extracted from bitter gourd juice by TPP. Moreover, BPS-A, which had the lowest Mws, showed the best bile acid-binding capacity among the four BPSs. This study had great potentials for the preparation of bioactive polysaccharides from fresh vegetables.
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GEOZS, IJS, IMTLJ, KILJ, KISLJ, NLZOH, NUK, OILJ, PNG, SAZU, SBCE, SBJE, UILJ, UL, UM, UPCLJ, UPUK, ZAGLJ, ZRSKP
A novel photoelectrochemical (PEC) aptasensor based on cerium (Ce) doped CdS modified graphene (G)/BiYWO6 was designed, which exhibits enhanced PEC intensity compared with pure BiYWO6, G/BiYWO3 and ...BiYWO6/Ce:CdS. In this scenario, ascorbic acid (AA) was exploited as an efficient and non-poisonous electron donor for scavenging photogenerated holes. The doping of Ce in CdS promoted its visible light absorption range and facilitated the charge transfer rate as well as hindered the h+/e- recombination. Moreover, the combination of G further promoted the electron carrier separation and transfer process due to its excellent electron collection and shuttling characteristic. Thus, the G/BiYWO6/Ce:CdS heterostructure was successfully served as a matrix for the PEC detection of tetracycline (Tc) at 0 V (vs Hg/Hg2Cl2). Under optimal conditions, the PEC aptasensor could offer a sensitive and specific detection limit (3 S/N) of Tc down to 0.01 ng/mL, as well as acceptable reproducibility, selectivity and storage stability, which opened up a promising pathway for the development of PEC biosensors.
•A novel label-free PEC aptasensor for Tc detection was developed.•Ce doped CdS improved the separation rate of electron-hole pairs.•The designed aptasensor based on hybrid structure showed high sensitivity.•The aptasensor showed a wide detection range of 0.2–1000 ng/mL.
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GEOZS, IJS, IMTLJ, KILJ, KISLJ, NLZOH, NUK, OILJ, PNG, SAZU, SBCE, SBJE, UL, UM, UPCLJ, UPUK, ZRSKP
Continuously rotating detonation engine （CRDE） is a focus for concern in the field of aerospace propulsion. It has several advantages, including one-initiation, high thermal efficiency and simple ...structure. Due to these characteristics, it is expected to bring revolutionary advance- ments to aviation and aerospace propulsion systems and now has drawn much attention throughout the world. In this paper, an overview of the development of CRDE is given from several aspects： basic concepts, applications, experimental studies, numerical simulations, and so on. Representative results and outstanding contributions are summarized and the unresolved issues for further engi- neerin~ applications of CRDE are 13rovided.
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GEOZS, IJS, IMTLJ, KILJ, KISLJ, NLZOH, NUK, OILJ, PNG, SAZU, SBCE, SBJE, UILJ, UL, UM, UPCLJ, UPUK, ZAGLJ, ZRSKP
•Water-soluble Cur and Cur-D were prepared by an alkali-neutralization treatment.•Ferulic acid (FA)-grafted Cur conjugates (Cur-g-FA and Cur-D-g-FA) were fabricated.•FA-grafted Cur conjugates showed ...decreased physical and rheological properties.•Cur-g-FA and Cur-D-g-FA exhibited remarkably enhanced antioxidant activity in vitro.•FA-grafted Cur conjugates as potent antioxidant agents applied for functional foods.
In this study, water-soluble curdlan products (Cur and Cur-D) were prepared by an alkali-neutralization treatment process, after which ferulic acid (FA)-grafted Cur conjugates (Cur-g-FA and Cur-D-g-FA) were fabricated in the presence and absence of salt by adopting an approach involving free-radicals generated by the ascorbic acid/hydrogen peroxide redox pair under an inert atmosphere. Results showed that FA was successfully grafted onto the C-6 and C-4 positions of the Cur chains through covalent linkages and that the presence of salt exerted minor influences on the grafting ratios and structural characterizations of the products. Cur-g-FA and Cur-D-g-FA showed decreased crystallinity, thermal stability, and rheological properties, as well as a distinct surface morphology, when compared with those of native Cur. However, Cur-g-FA and Cur-D-g-FA also exhibited remarkably enhanced free-radical scavenging ability and antioxidant capacity in vitro. These results indicate that FA-grafted Cur conjugates have great potential application in the field of functional foods.
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GEOZS, IJS, IMTLJ, KILJ, KISLJ, NLZOH, NUK, OILJ, PNG, SAZU, SBCE, SBJE, UILJ, UL, UM, UPCLJ, UPUK, ZAGLJ, ZRSKP
•Wind-induced current in shallow lake was simulated by a special equipment.•Acorus calamus had larger inhibitory effects on sediment resuspension.•Acorus calamus inhibited TP release better ...especially under moderate and rapid wind.•PP release mechanism with vegetation was mainly relevant to bed shear stress and SSC.•DTP release mechanism was different between plant species.
This study was conducted to investigate the effect of vegetation on sediment resuspension and phosphorus release in response to hydrodynamic disturbances in shallow lakes using a unique instrument to simulate wind-driven current. Two common types of vegetation, Vallisneria natans and Acorus calamus of Taihu Lake (a typical shallow lake), were planted in an experiment system. The results indicated that bed shear stress in the presence of vegetation was much less than critical shear stress which led to lower resuspension. Acorus calamus led to a much greater reduction in bed shear stress and better inhibitory effects on sediment resuspension due to its robust stem and better resisting capacity. Additionally, vegetation had a significant inhibitory effect on the release of total phosphorus (TP). The effect was larger for Acorus calamus, especially under hydrodynamic disturbance induced by moderate and high wind speed. TP release by Vallisneria natans was dominated by particulate phosphorus (PP) and that of Acorus calamus was dominated by dissolved total phosphorus (DTP). PP release mechanism was same in flume SV and EV that it was mainly relevant to bed shear stress and SSC. DTP release mechanism was different between plant species.
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GEOZS, IJS, IMTLJ, KILJ, KISLJ, NUK, OILJ, PNG, SAZU, SBCE, SBJE, UL, UM, UPCLJ, UPUK
Despite the tremendous progress of coupling organic electrooxidation with hydrogen generation in a hybrid electrolysis, electroreforming of raw biomass coupled to green hydrogen generation has not ...been reported yet due to the rigid polymeric structures of raw biomass. Herein, we electrooxidize the most abundant natural amino biopolymer chitin to acetate with over 90% yield in hybrid electrolysis. The overall energy consumption of electrolysis can be reduced by 15% due to the thermodynamically and kinetically more favorable chitin oxidation over water oxidation. In obvious contrast to small organics as the anodic reactant, the abundance of chitin endows the new oxidation reaction excellent scalability. A solar-driven electroreforming of chitin and chitin-containing shrimp shell waste is coupled to safe green hydrogen production thanks to the liquid anodic product and suppression of oxygen evolution. Our work thus demonstrates a scalable and safe process for resource upcycling and green hydrogen production for a sustainable energy future.
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