Rice–fish coculture (RF) is a small ecosystem in which microorganisms are widely distributed in the fish, water environment, soil, and plants. In order to study the positive effects of microorganisms on common carp and rice in the RF ecosystem, a total of 18 strains with growth-promoting ability were screened from common carp (Cyprinus carpio) gut contents, among which three strains had the ability to produce both DDP-IV inhibitors and IAA. The strain with the strongest combined ability, FYN-22, was identified physiologically, biochemically, and by 16S rRNA, and it was initially identified as Bacillus licheniformis. As the number of metabolites secreted by the strain under natural conditions is not sufficient for production, the FYN-22 fermentation medium formulation was optimized by means of one-factor-at-a-time (OFAT) experiments and response surface methodology (RSM). The results showed that, under the conditions of a soluble starch concentration of 10.961 g/l, yeast concentration of 2.366 g/l, NH4Cl concentration of 1.881 g/l, and FeCl3 concentration of 0.850 g/l, the actual measured number of FYN-22 spores in the fermentation broth was 1.913 × 109 CFU/ml, which was 2.575-fold improvement over the pre-optimization value. The optimized fermentation solution was used for the immersion operation of rice seeds, and, after 14 days of incubation in hydroponic boxes, the FYN-22 strain was found to have a highly significant enhancement of 48.31% (p < 0.01) on the above-ground part of rice, and different degrees of effect on root length, fresh weight, and dry weight (16.73, 17.80, and 21.97%, respectively; p < 0.05). This study may provide new insights into the fermentation process of Bacillus licheniformis FYN-22 and its further utilization in RF systems.
Purpose The real estate markets may be significantly influenced by the uncertainty in global economic policy. This paper aims to evaluate the time-varying connectedness between global economic policy uncertainty and regional real estate markets to understand how regional real estate markets and uncertainty in global economic policy are related throughout time. Design/methodology/approach The current study includes the monthly data from April 2007 to August 2022 of major regions (i.e. Asia Pacific, Europe, Africa, North America and Latin America). Moreover, the authors use the time-varying parameter vector auto-regression (TVP-VAR) approach for the analysis. Findings The finding revealed a significant level of connectedness among global economic policy uncertainty and selected regional real estate markets. The result highlights more than 80% connectivity between the two variables, which makes the current study valuable. Furthermore, results determine Africa and North America are the shock transmitters; thus, they are considered safe-haven for investors to invest in these markets. Originality/value The main novelty is that this research highlights the time-varying connectedness between global economic policy uncertainty and five regional real estate markets (Africa, Asian Pacific, Europe, Latin America and North America) using TVP-VAR. Furthermore, the authors used the standard and poor daily real estate investment trust (REIT) indices for the selected REIT markets. Finally, this research suggests practical implications for real estate investors, property developers, stakeholders, policymakers and managers to revise their current policies to maintain the real estate market stability during economic and political uncertainty or in other uncertain situations.
Background: Phospholipids form a natural defense and self-cleansing system in the nose, and the phospholipids supplemented via nasal sprays might stabilize or restore the impaired “nasal surfactant,” thereby maintaining the natural moisture film, protecting and moisturizing the nasal mucosa, and facilitating mucociliary clearance. Acute rhinitis is a self-limited, prevalent human disease caused by viral infection of the upper respiratory tract and is characterized by nasal dryness, sneezing, nasal congestion and discharge. Acute rhinitis is currently treated by symptom alleviation. This study investigates the efficacy and safety of a natural phospholipid intranasal spray in attenuating the nasal discomfort of patients with acute rhinitis. Methods: In this randomized, positive control, noninferiority trial, 144 patients with acute rhinitis were recruited by otolaryngologists in two Grade 3A public and research hospitals, and randomly allocated to experimental and control groups in a 1:1 ratio to receive a natural phospholipid spray, i.e., Surfrin® Intranasal Spray (Surfrin®), or a physiological sea water nasal spray, i.e., Bright Nose® Physiological Sea Water Nasal Spray (BNNS), respectively. The primary outcome was the effective rate, which was judged by the nasal sign score reduction index. The secondary outcome was changes in the total scores of nasal symptoms (TNSS). Any adverse events (AEs) of the study were recorded.Results: In the final statistical analysis, there were 68 participants in the experimental group and 71 participants in the control group. The effective rates of Surfrin® and BNNS were 98.5% and 91.5%, respectively. The TNSS decreased from 5.75±1.83 to 0.96±1.35 in the experimental group, and from 5.65±1.48 to 1.20±1.38 in the control group. The experimental group had one AE not related to treatment (1.41%), and another occurred in the control group (1.39%) and was probably related to treatment. No serious AEs or adverse reactions occurred.Conclusions: The results of this trial demonstrate the good safety and efficacy of the natural phospholipid Surfrin® Intranasal Spray as an alternative treatment for acute rhinitis. Trial registration: Chinese Clinical Trial Registry, Identifier: ChiCTR1900025655, September 4, 2019, retrospectively registered).
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